WO2019024300A1

WO2019024300A1 - Air conditioner self-cleaning control method and device

Info

Publication number: WO2019024300A1
Application number: PCT/CN2017/109304
Authority: WO
Inventors: 付裕; 王飞; 许文明; 张明杰; 张立智; 李波; 丁爽; 袁俊军; 任志强; 马林
Original assignee: 海尔集团公司; 青岛海尔空调器有限总公司
Priority date: 2017-08-03
Filing date: 2017-11-03
Publication date: 2019-02-07

Abstract

An air conditioner temperature and humidity dual control method, belonging to the technical field of air conditioner control. The method comprises: acquiring a current temperature value and a current humidity value of a space where an air conditioner is located; determining a current temperature difference value between the current temperature value and a set temperature value, and a current humidity difference value between the current humidity value and a set humidity value; determining the target operating frequency of a compressor according to the current temperature difference value, and determining, according to the current temperature difference value and the current humidity value, whether to turn on electric heating and the output power when the electric heating is turned on. The air conditioner temperature and humidity dual control method can adjust the operation of the compressor and the electric heating according to indoor environment parameters such as temperature and humidity, ensuring the temperature control of the indoor environment and control of the indoor humidity by controlling the operation frequency of the compressor.

Description

Air conditioner self-cleaning control method and device

The present application is filed on the basis of the Chinese Patent Application No. PCT Application No.

The present application is filed on the basis of the Chinese Patent Application No. PCT Application No. PCT Application No.

Technical field

This paper relates to the field of air conditioning control technology, and in particular to a method and device for controlling self-cleaning of an air conditioner.

Background technique

At present, the existing household air conditioners generate a large amount of condensed water during the cooling operation, and under the proper humidity and temperature conditions, a large amount of bacteria will be generated; and the bacteria will be delivered to the room along with the air supply, which will seriously affect User comfort and health. According to relevant research, bacteria are most likely to grow under high humidity or high temperature conditions.

In addition, during the actual operation of the household air conditioner, when the deviation between the set temperature and the room temperature is large, the compressor operates at a high frequency, and the internal coil temperature is generally low (below the air dew point temperature). The vapor is continuously condensed. When the room temperature reaches the set temperature, the humidity may be already low. Generally, the air conditioner does not have a humidifying function. At this time, the user may feel dry and uncomfortable; when the room temperature and the set temperature difference are small, Most of the air conditioners operate at low frequencies. At this time, the internal coil temperature is generally higher (higher than the air dew point temperature), and the water vapor in the air will not be condensed, so that when the room temperature reaches the set temperature, the air humidity may be too large. The user also feels uncomfortable. Therefore, the existing air conditioning control method often cannot balance the indoor temperature and humidity adjustment, and the indoor temperature and humidity cannot meet the requirements of the user's comfort and health.

Summary of the invention

This paper provides a control method and device for self-cleaning of air conditioners, aiming at solving the problem that the existing air conditioner can not balance indoor temperature and humidity adjustment. In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This generalization is not a general comment, nor is it intended to identify key/critical constituent elements or to describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the following detailed description.

According to a first aspect of the present invention, a method for temperature and humidity dual control of an air conditioner is provided, the method comprising: obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located; determining a current temperature value and a current value of the set temperature value a temperature difference, and a current humidity difference between the current humidity value and the set humidity value; determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operation of the compressor based on the current humidity difference a frequency; determining, according to the first operating frequency and the second operating frequency, a target operating frequency of the compressor; determining, according to the current temperature difference, whether to turn on electrical heating and output power when the electrical heating is turned on.

Further, determining, according to the current temperature difference, the first operating frequency of the compressor, comprising: determining a first temperature deviation value of the previous temperature difference and the first determined first temperature difference; and the a second temperature deviation value of a temperature difference from a second temperature difference determined last time; according to the first temperature deviation value and said The second temperature deviation value determines the first operating frequency of the compressor.

Further, determining the first operating frequency of the compressor according to the first temperature deviation value and the second temperature deviation value, comprising: the first operating frequency is calculated according to the following formula:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D _n is the current temperature difference and the last determined first temperature difference a first temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P _n is the current temperature difference value, P _{n- 1} is the first temperature difference, and P _n-2 is the second temperature difference.

Further, determining, according to the current humidity difference, the second operating frequency of the compressor, comprising: determining a first humidity deviation value of the difference between the front humidity difference and the first determined first humidity difference; a second humidity deviation value of the difference between the humidity and the second humidity determined last time; determining the second operating frequency of the compressor based on the first humidity deviation value and the second humidity deviation value.

Further, determining the second operating frequency of the compressor according to the first humidity deviation value and the second humidity deviation value, comprising: the second operating frequency is calculated according to the following formula:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

Hz2 is the second operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and d _n is the current humidity difference and the last determined first humidity difference a first humidity deviation value, d _n-1 is a second humidity deviation value of the first humidity difference value and a second humidity difference determined last time, p _n is the current humidity difference value, p _{n- 1} is the first humidity difference value, and p _n-2 is the second humidity difference value.

Further, determining the target operating frequency of the compressor according to the first operating frequency and the second operating frequency, comprising: compressing a larger value of the first operating frequency and the second operating frequency as a compression The target operating frequency of the machine.

Further, the method further includes: when the current temperature value reaches the set temperature value, controlling the compressor to operate at a set minimum frequency, and the inner fan of the air conditioner is operated at a low speed.

Further, determining whether to turn on the electric heating according to the current temperature difference comprises: controlling to turn on the electric heating when the current temperature difference is not in the target temperature difference range; and when the current temperature difference is in the The electric heating is not turned on when the target temperature difference is in the range.

According to the second aspect of the present invention, there is also provided an apparatus for controlling temperature and humidity of an air conditioner, the apparatus comprising: an obtaining unit, configured to acquire a current temperature value and a current humidity value of a space in which the air conditioner is located; and a first determining unit, a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value; and a second determining unit configured to determine the compressor according to the current temperature difference a first operating frequency, and determining a second operating frequency of the compressor according to the current humidity difference; a third determining unit, configured to determine a target operation of the compressor according to the first operating frequency and the second operating frequency The fourth determining unit is configured to determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference.

Further, the second determining module includes: a first determining submodule, configured to determine a first temperature deviation value of the previous temperature difference value and a first determined first temperature difference value; and the first temperature difference value a second temperature deviation value that is different from the second temperature difference determined last time; a second determining submodule configured to determine the first operation of the compressor based on the first temperature deviation value and the second temperature deviation value frequency.

Further, the second determining submodule is configured to perform the PID calculation according to the following formula to obtain the first operating frequency rate:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

According to a third aspect of the present invention, a method for temperature and humidity dual control of an air conditioner is provided, the method comprising: obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located; determining a current temperature value and a set temperature value a current temperature difference, and a current humidity difference between the current humidity value and the set humidity value; determining a first operating frequency of the compressor based on the current temperature difference, and determining a second compressor based on the current humidity difference a running frequency; determining, according to the first operating frequency and the second operating frequency, a target operating frequency of the compressor; determining, according to the current temperature difference and the current humidity value, whether to turn on electric heating and when the electric heating is turned on Output Power.

Further, determining, according to the current temperature difference, the first operating frequency of the compressor, comprising: determining a first temperature deviation value of the previous temperature difference and the first determined first temperature difference; and the a second temperature deviation value of a temperature difference value and a second temperature difference determined last time; determining the first operating frequency of the compressor based on the first temperature deviation value and the second temperature deviation value.

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

Further, the method further includes: controlling the pressure when the current temperature value reaches the set temperature value The compressor operates at a set minimum frequency and the inner fan of the air conditioner operates at a low speed.

Further, determining whether to turn on the electric heating according to the current temperature difference value and the current humidity value comprises: determining a target temperature difference range and a target humidity range according to the set temperature value; when the target temperature difference is not The target temperature difference range, and when the current humidity value is not in the target humidity range, controlling to turn on electric heating; when the target temperature difference is in the target temperature difference range, and/or the current humidity value When in the target humidity range, the electrical heating is not turned on.

According to the fourth aspect of the present invention, there is also provided an apparatus for controlling temperature and humidity of an air conditioner, the apparatus comprising: an obtaining unit, configured to acquire a current temperature value and a current humidity value of a space in which the air conditioner is located; and a first determining unit, a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value; and a second determining unit configured to determine the compressor according to the current temperature difference a first operating frequency, and determining a second operating frequency of the compressor according to the current humidity difference; a third determining unit, configured to determine a target operation of the compressor according to the first operating frequency and the second operating frequency a fourth determining unit, configured to determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference value and the current humidity value.

Further, the second determining submodule is configured to perform the PID calculation according to the following formula to obtain the first operating frequency:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

According to a fifth aspect of the present invention, a method for controlling self-cleaning of an air conditioner is provided, the method comprising: obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located; and determining a current temperature difference between the current temperature value and the set temperature value. a value, and a current humidity difference between the current humidity value and the set humidity value; determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operating frequency of the compressor based on the current humidity difference; The frequency and the second operating frequency determine the target operating frequency of the compressor; and determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference.

According to a sixth aspect of the present invention, a method for controlling self-cleaning of an air conditioner is provided, the method comprising: obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located; and determining a current temperature difference between the current temperature value and the set temperature value. a value, and a current humidity difference between the current humidity value and the set humidity value; determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operating frequency of the compressor based on the current humidity difference; The frequency and the second operating frequency determine the target operating frequency of the compressor; and determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference and the current humidity value.

The air conditioning temperature and humidity dual control method of the present invention can adjust the operation of the compressor and the electric heating according to indoor environmental parameters such as temperature and humidity, thereby ensuring the temperature control effect on the indoor environment by controlling the operating frequency of the compressor, and Through the control of electric heating to achieve the purpose of controlling the humidity in the room, so that the indoor temperature and humidity can be Meet the requirements of user comfort and avoid the influence of fluctuations of other environmental parameters caused by adjusting single indoor environmental parameters.

The above general description and the following detailed description are merely exemplary and explanatory and are not limiting.

DRAWINGS

The drawings herein are incorporated in and constitute a part of the specification, and are in the

1 is a flow chart 1 of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention;

2 is a second flowchart of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention;

3 is a third flowchart of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention;

4 is a flow chart 4 of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention;

FIG. 5 is a flow chart 5 of the temperature and humidity dual control method according to an exemplary embodiment;

6 is a flow chart 6 of a temperature and humidity dual control method according to an exemplary embodiment of the present invention;

7 is a flow chart 7 of the temperature and humidity dual control method according to an exemplary embodiment of the present invention;

FIG. 8 is a flowchart 8 of a temperature and humidity dual control method according to an exemplary embodiment of the present invention; FIG.

9 is a flow chart IX of the present temperature and humidity dual control method, according to an exemplary embodiment.

Detailed ways

The following description and the annexed drawings are intended to illustrate the specific embodiments herein Other embodiments may include structural, logical, electrical, process, and other changes. The examples represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included or substituted for portions and features of other embodiments. The scope of the embodiments herein includes the full scope of the claims, and all equivalents of the claims. In this context, various embodiments may be referred to individually or collectively by the term "embodiment" for convenience only, and if more than one embodiment is disclosed, it is not intended to automatically limit the scope of the application. It is contemplated by any single embodiment or embodiment. Herein, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not require or imply any actual relationship between the entities or operations or order. Furthermore, the terms "comprises" or "comprising" or "comprising" or any other variations are intended to encompass a non-exclusive inclusion, such that a process, method, or device that includes a plurality of elements includes not only those elements but also other items not specifically listed. Elements, or elements that are inherent to such a process, method, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, or device that comprises the element. The various embodiments herein are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the method, product, and the like disclosed in the embodiments, since it corresponds to the method part disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

Air conditioning is a common electrical appliance in daily life. It can adjust the temperature of the room, and it can heat up or cool down, so that the indoor temperature matches the preset temperature of the user. However, in the process of temperature regulation, it often leads to changes in the indoor environment humidity, such as by increasing the amount of refrigerant to reduce the indoor ambient temperature, due to the surface temperature of the indoor heat exchanger. If it is lowered, the amount of water vapor that is condensed in the air flowing through the indoor heat exchanger may increase, which may cause the indoor environment to decrease in humidity, and the user often feels dry and uncomfortable. Similarly, when adjusting the humidity in the room through air conditioning, it may also cause changes in the indoor ambient temperature, such as reducing the surface temperature of the indoor heat exchanger by increasing the amount of refrigerant, and then removing the wetness from the indoor environment, due to indoor When the surface temperature of the heat exchanger is lowered, the temperature of the air blown out by the operating indoor unit is lowered, which causes the indoor ambient temperature to decrease, and the user often has a cold feeling. Therefore, the existing air conditioning control method that adjusts only a single parameter such as temperature or humidity cannot satisfy the user's comfort requirement.

The method of temperature and humidity dual control provided in this paper adjusts the operation mode of the air conditioner and takes into account the changes of the indoor environment temperature and humidity during the adjustment process. This ensures the air conditioning temperature control effect and increases the air conditioning humidity control function.

Specifically, when the air conditioner is operated in the mode of cooling, heating or dehumidification, the amount of refrigerant input into the indoor heat exchanger can directly affect the cooling, heating and dehumidification effects, and the amount of refrigerant input depends on the amount of refrigerant. The operating frequency of the compressor, when the operating frequency of the compressor is high, the amount of refrigerant discharged into the air-conditioning refrigerant circulation system is also large, so that the amount of refrigerant flowing through the indoor heat exchanger is also increased, and thus can To accelerate the cooling, heating and dehumidification efficiency; when the operating frequency of the compressor is low, the amount of refrigerant discharged into the air conditioning refrigerant circulation system is also small, so that the amount of refrigerant flowing through the indoor heat exchanger is also This is reduced, which in turn can delay the cooling, heating and dehumidification processes.

Therefore, by adjusting the operating frequency of the compressor, it is possible to control the amount of refrigerant in the input heat exchanger, thereby achieving the purpose of adjusting the cooling, heating and dehumidification effects. For example, in high temperature working conditions in summer, air conditioners generally operate in a cooling mode. When the indoor ambient temperature is high, the operating frequency of the compressor can be increased to speed up the cooling efficiency of the cooling mode, thereby making the indoor ambient temperature lower. Or the temperature condition; or, in the low temperature condition in winter, the air conditioner generally operates in the heating mode. When the indoor ambient temperature is low, the operating frequency of the compressor can be increased to accelerate the heating efficiency of the heating mode, thereby making the indoor environment The temperature can be increased to a suitable temperature condition; or, in the summer high humidity condition, the air conditioner can be switched from the cooling mode to the dehumidification mode operation, and the dehumidification efficiency of the dehumidification mode can be accelerated by increasing the operating frequency of the compressor, thereby It is the indoor environment humidity can be reduced to a more appropriate humidity condition.

When the indoor ambient temperature is close to the temperature value set by the user, the operating frequency of the air conditioner compressor can be controlled to be at an appropriate or lower frequency value, thereby achieving the purpose of maintaining the indoor ambient temperature stable; similarly, in an indoor environment. When the humidity is close to the humidity value set by the user, the operating frequency of the air conditioner compressor can also be controlled at an appropriate or lower frequency value, which can also achieve the effect of maintaining the indoor ambient temperature stability.

For the adjustment of the operating frequency of the compressor, this paper provides two adjustment methods: one is to determine the target operating frequency of the compressor according to the current temperature value of the indoor environment and the temperature value set by the user; the other is based on the indoor The current temperature value of the environment and the temperature value set by the user, combined with the current humidity value of the indoor environment and the humidity value set by the user, thereby determining the target operating frequency of the compressor. The above two adjustment methods, the first one is mainly to adjust the operating frequency of the compressor for the difference between the current temperature value of the indoor environment and the set temperature value, so that the operating frequency of the compressor can preferentially satisfy the amount of refrigerant regulated by the air conditioning temperature. Required, suitable for the cooling and heating operation mode of the air conditioner; the second method is to combine the temperature difference between the current temperature value and the set temperature value of the indoor environment, and the humidity difference between the current humidity value and the set humidity value, so that The operating frequency of the compressor is preferred to meet the demand for refrigerant with large differences in parameters, and is suitable for the cooling and dehumidification modes of the air conditioner.

FIG. 1 is a flow chart 1 of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention. In the application scenario shown in FIG. 1, it is disclosed that the purpose of the compressor is determined according to the current temperature value and the set temperature value of the indoor environment. The relevant process of the standard operating frequency.

Specifically, as shown in FIG. 1 , the foregoing steps of determining the target operating frequency of the compressor according to the current temperature value and the set temperature value of the indoor environment mainly include:

S101. Obtain a current temperature value of a space where the air conditioner is located;

In the embodiment, the air conditioner is generally installed in an indoor space such as a living room, a bedroom, and a conference room. Therefore, the current temperature value of the indoor space such as a living room, a bedroom, or a conference room installed in the air conditioner is obtained in step S101. This is the real-time indoor ambient temperature value obtained in this process.

Preferably, the air conditioner is provided with a temperature sensor for detecting the current temperature value of the indoor environment. The sensing end of the temperature sensor can be disposed on the air inlet of the air conditioner or the outer wall of the casing so that the current temperature value detected can be the same as or similar to the actual temperature of the indoor environment, thereby improving the compressor determined according to the current temperature value herein. The accuracy of the target operating frequency.

S102. Determine a current temperature difference between the current temperature value and the set temperature value.

In the embodiment, when the air conditioner is turned on, the user can input the target indoor ambient temperature to be reached through the remote control or the control panel on the air conditioner body, that is, the set temperature value in the embodiment, such as the high temperature working condition in the summer, the user When the target indoor ambient temperature to be achieved is set to 24 °C by the remote control, 24 °C is the set temperature value.

It should be understood that if the user does not input the target indoor ambient temperature value through the remote controller or the control panel, the temperature value maintained by the default air conditioner when it was last turned off is the set temperature value, and the set temperature when the air conditioner is turned off as above. When the value is 26 °C, the 26 °C of the last air conditioner operation is the set temperature value of this process when the air conditioner is turned on and the user does not input the set temperature value.

In the embodiment, in the summer high temperature condition, the current temperature value of the indoor environment is generally higher than the set temperature value, therefore, the current temperature difference is the difference between the current temperature value minus the set temperature value; and the low temperature in winter Working condition, the current temperature value of the indoor environment is generally lower than the set temperature value, therefore, the current temperature difference is the difference between the set temperature value minus the current temperature value. For ease of calculation, preferably, the current temperature difference determined herein is the absolute value of the difference between the current temperature value and the set temperature value.

S103. Determine a target operating frequency of the compressor according to a current temperature difference;

In this embodiment, the frequency adjustment process of the air conditioner compressor is performed multiple times in a set cycle. Therefore, in each cycle process, the current temperature difference of the current cycle process can be calculated and determined. Dual Control Method In order to improve the accuracy of the compressor operating frequency control, the temperature difference determined in the first two cycles of this process needs to be determined in advance before determining the target operating frequency of the compressor.

That is, before the current temperature of the indoor environment reaches the set temperature, the air conditioner needs to repeatedly execute m times in the foregoing embodiment, and the nth time is taken as an example to determine the target operation of the compressor in the nth cycle. Before the frequency, it is necessary to predetermine the current temperature difference determined in the n-1th and n-2th cycle processes; the n-1th current temperature difference is the n-1th cycle process The difference between the current temperature value obtained in the middle and the set temperature, and the current temperature difference of the n-2th time is the difference between the current temperature value acquired in the n-2th cycle process and the set temperature.

For example, taking the cooling process in the summer high temperature condition as an example, in the continuous three cycle process, since the air conditioning cooling mode continues to operate, the current temperature value detected in the three cycles is gradually decreased, such as the n-th 2 times is 30 °C, the n-1th is 29 °C, the nth is 27 °C, the air conditioner is set to 24 °C, then the n-2th current temperature difference is 6 °C, the n-th The current temperature difference of 1 time is 5 °C, and the current temperature difference of the nth time is 3 °C.

In this way, the first temperature deviation value of the current temperature difference and the first determined first temperature difference value, that is, the temperature deviation value between the current temperature difference between the current cycle process and the previous cycle process, may be further determined. E.g, In this paper, the nth time is taken as the current cycle, and the current temperature difference between the nth and n-1th times calculated in the foregoing embodiment can be used to determine that the first temperature deviation value is 5-3=2. °C.

Similarly, the second temperature deviation value of the first temperature difference and the second temperature difference determined last time may be determined, that is, the current temperature difference of the current previous cycle process and the current temperature of the previous cycle process. The temperature deviation value between the differences, for example, the last cycle process of the current time is the n-1th cycle process, and the previous cycle process is the n-2th cycle process, which is calculated according to the foregoing embodiment. The obtained current temperature difference between the n-1th and the n-2th times determines that the second temperature deviation value is 6-5=1°C.

It should be understood that, in order to distinguish the current temperature difference in different periodic processes, the current temperature difference in the n-1th cycle process in the foregoing embodiment is defined as the first temperature difference, the n-2th. The current temperature difference in the cycle flow is defined as the second temperature difference.

Preferably, for ease of calculation, the temperature deviation value determined herein is also the absolute value of the value.

Thus, the target operating frequency of the compressor can be determined based on the first temperature deviation value and the second temperature deviation value.

Specifically, the target operating frequency of the compressor is calculated according to the following formula:

Hzout=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hzout is the target operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D _n is the first difference between the current temperature difference and the last determined first temperature difference. The temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference value and the second temperature difference determined last time, P _n is the current temperature difference value, and P _n-1 is the first temperature difference value P _n-2 is the second temperature difference.

Therefore, according to the above calculation formula, the target operating frequency of the compressor can be calculated, and the target operating frequency is used as the set operating frequency of the compressor in the current cycle, by the actual operating frequency of the compressor or the previous cycle. The operating frequency in the medium is adjusted to the determined target operating frequency, so that the amount of refrigerant output from the air conditioner to the air-conditioning refrigerant circulation system can meet the demand of the refrigerant of the air-conditioning refrigeration, heating or dehumidification, and can be adapted to the current working conditions, thereby also functioning Energy saving and consumption reduction, improve the performance of the air conditioner.

In this embodiment, when the current temperature value reaches the set temperature value, the compressor is controlled to operate at the set minimum frequency, and the inner fan of the air conditioner operates at a low speed, so that the indoor ambient temperature can be maintained at the set temperature. Or close to the set temperature temperature conditions, and can reduce the consumption of electrical energy, reducing the cost of air conditioning.

FIG. 2 is a second flowchart of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention. In the application scenario shown in FIG. 2, a related process for determining a target operating frequency of the compressor according to the current temperature value and the set temperature value of the indoor environment, combined with the current humidity value of the indoor environment and the humidity value set by the user is disclosed. .

Specifically, as shown in FIG. 2, the foregoing steps of determining the target operating frequency of the compressor according to the current temperature value and the set temperature value of the indoor environment, combined with the current humidity value of the indoor environment and the humidity value set by the user mainly include: :

S201. Obtain a current temperature value and a current humidity value of a space where the air conditioner is located;

In the embodiment, the manner of obtaining the current temperature value of the space in which the air conditioner is located may refer to the embodiment shown in FIG. 1 above, and details are not described herein.

For the current humidity value parameter, in the embodiment, the current humidity value of the indoor space such as the living room, the bedroom or the conference room installed in the air conditioner is obtained in step S201, that is, the real-time obtained in the current process. Indoor environmental humidity value.

Preferably, the air conditioner is provided with a humidity sensor, which can be used to detect the current humidity value of the indoor environment. The sensing end of the humidity sensor can be placed on the air inlet of the air conditioner or the outer wall of the casing so that the current humidity value detected can be The actual humidity of the indoor environment is the same or similar, thereby improving the accuracy of the target operating frequency of the compressor determined according to the current humidity value.

S202. Determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value.

In this embodiment, the specific manner of determining the current temperature difference between the current temperature value and the set temperature value may refer to the embodiment shown in FIG. 1 above, and details are not described herein.

For the parameter of setting the humidity value, in the embodiment, when the air conditioner is turned on, the user can input the desired indoor indoor humidity through the remote control or the control panel on the air conditioner body, that is, the set humidity value in this embodiment. For example, in the summer high temperature condition, the user sets the target indoor environment humidity to be reached by the remote controller to a relative humidity of 50 ° C, and the relative humidity of 50% is the set humidity value.

It should be understood that if the user does not input the target indoor humidity value through the remote controller or the control panel, the humidity value maintained by the default air conditioner when it is last turned off is the set humidity value, and the set humidity when the air conditioner is turned off as above. The value is 55% relative humidity. When the air conditioner is turned on and the user does not input the set humidity value, the relative humidity of 55% during the last air conditioner operation is the set humidity value of this process.

In an embodiment, in the high temperature and high humidity conditions in summer, the current humidity value of the indoor environment is generally higher than the set temperature value, and therefore, the current humidity difference is the current humidity value minus the difference of the set humidity value; In winter low temperature conditions, the current humidity value of the indoor environment is generally lower than the set humidity value. Therefore, the current humidity difference is the difference between the set humidity value minus the current humidity value. For ease of calculation, preferably, the current humidity difference determined herein is the absolute value of the difference between the current humidity value and the set humidity value.

S203: Determine a first operating frequency of the compressor according to a current temperature difference, and determine a second operating frequency of the compressor according to the current humidity difference;

S204. Determine a target operating frequency of the compressor according to the first operating frequency and the second operating frequency.

Similar to the embodiment shown in FIG. 1, in the present embodiment, the frequency adjustment process of the air conditioner compressor is performed multiple times in a set cycle, and therefore, in each cycle process, it can be calculated and determined. The current temperature difference between the current cycle and the current humidity difference. In order to improve the accuracy of the compressor operating frequency control, the temperature and humidity dual control method needs to predetermine the process before determining the compressor operating frequency. The difference in temperature and humidity determined in the first two cycles.

In an embodiment, determining the first operating frequency of the compressor according to the current temperature difference may refer to the embodiment shown in FIG. 1. The first operating frequency may be calculated according to the following formula:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hz1 is the first operating frequency of humidity, Out_gain is the output coefficient, Kp is the proportional control quantity, Ki is the integral control quantity, Kd is the differential control quantity, and D _n is the current temperature difference and the first temperature difference determined last time. The first temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference between the humidity and the second temperature difference determined last time, P _n is the current temperature difference of the humidity, and P _n-1 is the humidity The first temperature difference, P _n-2 is the humidity second temperature difference.

In the present embodiment, the description will be made on the determination process of the humidity difference.

In this embodiment, before the current humidity of the indoor environment reaches the set humidity, the air conditioner needs to be repeatedly executed m times in the foregoing embodiment, and the nth time is taken as an example to determine the flow of the compressor in the nth cycle. Before the target operating frequency, it is necessary to predetermine the current humidity difference determined in the n-1th and n-2th cycle processes; the n-1th current humidity difference is the n-1th The difference between the current humidity value obtained in the secondary cycle process and the set humidity, and the current humidity difference of the n-2th time is obtained in the n-2th cycle process. The difference between the front humidity value and the set humidity.

For example, taking the cooling process in the summer high temperature condition as an example, in the continuous three cycle process, since the air conditioning cooling mode continues to operate, the current humidity value detected in the three cycles is gradually decreased, such as the n-th 2 times is relative humidity 64%, n-1th time is relative humidity 62%, nth time is relative humidity 59%, air conditioner setting humidity value is relative humidity 50%, then n-2nd current humidity difference The value is 14% relative humidity, the current humidity difference of the n-1th time is relative to 12%, and the current humidity difference of the nth time is 9% relative humidity.

In this way, the first humidity deviation value between the current humidity difference and the last determined first humidity difference value, that is, the humidity deviation value between the current humidity process and the current humidity difference of the previous cycle process, can be further determined. For example, in the present cycle, the nth time is used as the current cycle, and the first humidity deviation value of the nth and n-1th times calculated in the foregoing embodiment can be determined to be 14%. 12% = 2%.

Similarly, the second humidity deviation value of the difference between the first humidity difference and the second humidity determined last time may be determined, that is, the current humidity difference of the current previous cycle process and the current humidity of the previous cycle process. The humidity deviation value between the differences, for example, the last cycle process of the current time is the n-1th cycle process, and the previous cycle process is the n-2th cycle process, which is calculated according to the foregoing embodiment. The obtained current humidity difference between the n-1th and the n-2th times determines that the second humidity deviation value is 12%-9%=3%.

It should be understood that, in order to distinguish the current humidity difference in different periodic processes, the current humidity difference in the n-1th cycle process in the foregoing embodiment is defined as the first humidity difference, the n-2th. The current humidity difference in the cycle flow is defined as the second humidity difference.

Preferably, the relevant process steps for determining the target operating frequency of the compressor based on the current temperature difference are performed in a period of n>2 times. Since the time of each cycle is short, the air conditioner is turned on before the operation. The indoor temperature and humidity of the cycle and the change of the outlet air temperature are small, so the above process steps in this paper are mainly for the cycle process of n>2 times and the subsequent cycle process.

Preferably, for ease of calculation, the humidity deviation value determined herein is also the absolute value of the value.

Thus, the second operating frequency of the compressor can be determined based on the first humidity deviation value and the second humidity deviation value.

Specifically, the second operating frequency of the compressor is calculated according to the following formula:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

In the practical application of air conditioner, Out_gain is the output coefficient of the compressor, and each compressor model corresponds to the determined output coefficient value; Kp, Ki and Kd are the calculation coefficients pre-stored in the air conditioner, and these calculation coefficients can be shipped in the air conditioner product. Before, it was obtained by summarizing the debugging data of a large number of simulation experiments.

Therefore, the second operating frequency of the compressor can be calculated according to the above calculation formula, and the target operating frequency of the compressor can be determined by combining the first operating frequency calculated by the foregoing calculation. Preferably, the larger of the first operating frequency and the second operating frequency is used as the target operating frequency of the compressor, and the target operating frequency is used as the set operating frequency of the compressor in the current cycle. Adjusting the actual operating frequency of the compressor or the operating frequency in the previous cycle to the determined target operating frequency, the amount of refrigerant output from the air conditioner to the air conditioning refrigerant circulation system can meet the demand for the refrigerant of the air conditioning refrigeration, heating or dehumidification, and It can be adapted to the current working conditions, so that it can also save energy and reduce consumption and improve the performance of the air conditioner.

In this embodiment, the first operating frequency is the minimum operating frequency of the compressor required for the air conditioner to perform temperature control, and the second operating frequency is the minimum operating frequency of the compressor required for the air conditioner to perform humidity control. Therefore, this document will The larger of the first operating frequency and the second operating frequency is selected as the target operating frequency of the compressor, so that the operating frequency of the compressor can meet the needs of air conditioning temperature control and humidity control.

In this embodiment, when the current temperature value reaches the set temperature value, the compressor can also be controlled to operate at the set minimum frequency, and the inner fan of the air conditioner operates at a low speed, so that the indoor ambient temperature can be maintained at the set At a fixed temperature or a temperature close to the set temperature, the consumption of electric energy can be reduced, and the use cost of the air conditioner can be reduced.

In addition, in the adjustment process of the operating frequency of the compressor in the above various embodiments, the air outlet temperature of the air conditioner is also affected along with the change of the amount of the refrigerant input into the indoor heat exchanger, for example, switching the air conditioner to the dehumidification mode. When the operating frequency of the compressor is increased and the input of the refrigerant is increased, the outlet temperature of the air conditioner is also reduced, which causes user discomfort. Therefore, in order to avoid the influence of temperature changes on the user, the air conditioner of the present invention is also provided with an electric heating device. The electric heating device can heat the air blown by the air conditioner, thereby increasing the temperature of the airflow.

Generally, the existing electric heating device is mainly applied to the heating condition in winter, and this paper can be applied to the operation mode such as cooling or dehumidification, thereby improving the utilization rate of the electric heating device. Specifically, by adjusting the opening or closing of the electric heating device and the output frequency when the electric heating device is turned on, the temperature control of the airflow flowing into the indoor environment can be realized, thereby achieving a constant temperature of the airflow when the air conditioner operates in a dehumidification mode or the like. The purpose is to avoid the problem of indoor temperature fluctuation caused by mode switching or the like without affecting indoor cooling.

For the electric heating switching control and output power adjustment, this paper provides three adjustment methods: the first is to determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current humidity value; the second is based on the current temperature The difference determines whether the electric heating and the output power when the electric heating is turned on is turned on; the third is to determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference and the current humidity value. The above three adjustment methods, the first one is mainly to adjust the current heating value of the indoor environment and the target humidity range to adjust the operation of the electric heating, so that the thermal output power of the motor can preferentially meet the heat demand of the air conditioning humidity adjustment, and is suitable for the air conditioning. The dehumidification operation mode; the second method is to adjust the electric heating operation for the difference between the current temperature value of the indoor environment and the target temperature range, so that the output power of the electric heating preferentially meets the heat requirement of the air conditioning temperature regulation, and is suitable for the air conditioning. The cooling or heating operation mode; the third is combined with the first two methods, which is suitable for the heat demand with large difference in parameters, and is suitable for the cooling and dehumidification operation mode of the air conditioner.

FIG. 3 is a third flowchart of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention. In the application scenario shown in FIG. 3, a related flow for determining whether to turn on the electric heating and the output power when the electric heating is turned on according to the current humidity value is disclosed.

Specifically, as shown in FIG. 3, the main steps of the foregoing first electric heating adjustment method include:

S310. Determine a target humidity range according to the set temperature value.

Here, the correspondence between the set temperature value and the target humidity range may be saved in advance, that is, for each set temperature, a plurality of human bodies may be tested to obtain the most comfortable humidity of the corresponding human body, and the setting of the set temperature is obtained. In the fixed area, the plurality of human body collects the humidity value corresponding to the set somatosensory comfort level, and determines the target humidity range corresponding to the set temperature according to the plurality of humidity values, and saves the corresponding relationship. For example, the set temperature is 25 ° C. At this time, the humidity is between 40% and 60% relative humidity. Most users will feel the most comfortable. Therefore, the humidity can be determined from 40% to 60% and the set temperature is 25 °C. Corresponding target humidity range, and save the correspondence between the set temperature 25 ° and the target humidity range of 40%-60%.

Thus, the correspondence between the saved set temperature and the target humidity range can be as shown in Table 1:

设定温度set temperature	目标湿度范围Target humidity range
30℃30 ° C	湿度30％-50％Humidity 30%-50%
28℃28 ° C	湿度30％-60％Humidity 30%-60%
…...	…...
25℃25°C	湿度40％-60％Humidity 40%-60%
…...	…...

Table 1

Here, the current target humidity range corresponding to the current set temperature of the air conditioner may be determined according to the correspondence between the saved preset temperature and the target temperature and humidity range. As shown in Table 1, the currently set temperature is 28°, and the current target humidity range obtained is 30%-60%.

S321, when the current humidity value is not in the target humidity range, then controlling to turn on the electric heating;

In this embodiment, when the current humidity value is not in the target humidity range, after the operating frequency of the compressor is adjusted in the foregoing embodiment, or when the air conditioner needs to be switched to the dehumidification mode, the refrigerant output increases and flows through the indoor heat exchange. The amount of refrigerant in the device also changes. Therefore, the temperature of the air outlet of the air conditioner changes. When the temperature of the air outlet decreases, it is necessary to turn on the electric heating and deliver heat to the airflow to compensate for the increase in the amount of refrigerant due to the increase in the amount of refrigerant. Reduced temperature.

In an embodiment, the current humidity value is not in the target humidity range, the current humidity value is lower than the lower limit of the target humidity range, and the current humidity value is higher than the upper limit of the target humidity range, for example, the target humidity range corresponding to a certain set temperature is (RH1, RH2), the current humidity value is RH, then when RH < RH1 or RH> RH2, the condition of electric heating on can be satisfied.

S322. When the current humidity value is in the target humidity range, the electric heating is not turned on;

For example, when the current humidity value RH1 < RH < RH2, the condition that the electric heating is not turned on is satisfied.

Generally, since the determination process of determining whether to turn on the electric heating according to the humidity value is performed in each cycle, if the air conditioning is started in the first cycle, the current humidity value satisfies the condition that the electric heating is not turned on. , the electric heating is not turned on; if the first cycle process satisfies the condition of turning on the electric heating, the subsequent one of the cycle processes other than the first cycle process satisfies the condition that the electric heating is not turned on, and is not in the current one. In the cycle process, the electric heating is turned off again, generally the current electric heating output power is maintained in the cycle and the subsequent cycle process, so that since the user has met the indoor humidity requirement in the cycle, During the air conditioning operation of the cycle and subsequent cycles, the heat output by the electric heating can compensate for the drop in the outlet air temperature caused by the adjustment of the operating power of the compressor.

Similarly, the other two electric heating control methods in the subsequent embodiments can also adopt a similar manner to the present embodiment.

In another embodiment, a related process for determining whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference is disclosed. Specifically, the main steps of the second electric heating adjustment method include: When the current temperature difference is not within the target temperature difference range, the control is turned on for electric heating; and when the current temperature difference is within the target temperature difference range, the electric heating is not turned on.

Here, the air conditioning system prestores a target temperature difference range. When the current temperature difference is not in the target humidity range, after the operating frequency of the compressor is adjusted in the foregoing embodiment, the refrigerant output increases, flowing through the indoor heat exchanger. The amount of refrigerant also changes. Therefore, the temperature of the air outlet of the air conditioner changes. When the outlet temperature decreases, it is necessary to turn on the electric heating and deliver heat to the airflow to compensate for the decrease of the airflow due to the increase in the amount of refrigerant. Warm degree.

For example, if a target temperature difference range is set to a target humidity range corresponding to temperature P _n ≥ 2 ° C, that is, the current humidity value is P _n , then when P _n < 2 ° C, electric heating can be satisfied. The conditions that are turned on. When P _n ≥ 2 ° C, the condition that the electric heating is not turned on can be satisfied.

4 is a flow chart 4 of a method for controlling temperature and humidity of an air conditioner according to an exemplary embodiment of the present invention. In the application scenario shown in FIG. 4, a related process of determining whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference value and the current humidity value is disclosed.

Specifically, as shown in FIG. 4, the main steps of the foregoing third electric heating adjustment method include:

S410: Determine a target temperature difference range and a target humidity range according to the set temperature value;

Similar to the embodiment shown in FIG. 3, the correspondence between the set temperature value, the target temperature difference range, and the target humidity range may also be saved in advance, as shown in Table 2:

设定温度set temperature	目标温度差值范围Target temperature difference range	目标湿度范围Target humidity range
30℃30 ° C	温度差≥2℃Temperature difference ≥ 2 ° C	湿度30％-50％Humidity 30%-50%
28℃28 ° C	温度差≥2℃Temperature difference ≥ 2 ° C	湿度30％-60％Humidity 30%-60%
…...	…...	…...
25℃25°C	温度差≥2℃Temperature difference ≥ 2 ° C	湿度40％-60％Humidity 40%-60%
…...	…...	…...

Table 2

Here, the current target humidity range corresponding to the current set temperature of the air conditioner may be determined according to the correspondence between the saved preset temperature and the target temperature and humidity range. As shown in Table 2, the currently set temperature is 28°, the target temperature difference range obtained is 2° C. or more, and the current target humidity range is 30%-60%.

S421: When the target temperature difference is not within the target temperature difference range, and the current humidity value is not in the target humidity range, then controlling to turn on the electric heating;

In this embodiment, when the target temperature difference is not in the target temperature difference range, and the current humidity value is not in the target humidity range, after the operating frequency of the compressor is adjusted in the foregoing embodiment, the refrigerant quantity output is increased, and the indoor air exchange is performed. The amount of refrigerant in the heat exchanger also changes accordingly. Therefore, the temperature of the air outlet of the air conditioner changes, and when the temperature of the air outlet decreases, it is necessary to turn on the electric heating and deliver heat to the airflow to compensate for the increase of the airflow due to the amount of refrigerant. And the temperature is lowered.

In an embodiment, when the target temperature difference is not in the target temperature difference range, the current temperature difference is lower than the lower limit of the target temperature range, and the current temperature difference is higher than the upper limit of the target temperature range; the current humidity value is not in the target humidity range, including the current The humidity value is lower than the lower limit of the target humidity range, and the current humidity value is higher than the upper limit of the target humidity range. For example, the target temperature difference corresponding to a certain set temperature is greater than or equal to 2 ° C, and the target humidity range is (RH1, RH2). The current temperature difference is P _n and the current humidity value is RH. When P _n <2° C. and RH<RH1 or RH>RH2, the condition of electric heating on can be satisfied.

S422: When the target temperature difference is in the target temperature difference range, and/or the current humidity value is in the target humidity range, the electric heating is not turned on.

For example, when P _n ≥ 2 ° C, and/or RH1 < RH < RH 2 , the condition that the electric heating is not turned on can be satisfied.

In combination with the compressor control mode and the electric heating control mode provided in the foregoing various embodiments, the temperature and humidity dual control effect on the air conditioner can be achieved by adjusting the compressor and the electric heating.

FIG. 5 is a flowchart of the temperature and humidity dual control method according to an exemplary embodiment of the present invention; in the application scenario shown in FIG. 5, the specific control flow of the air conditioner to achieve temperature and humidity dual control is as follows:

S501. The air conditioner obtains a current temperature value and a current humidity value of a space where the air conditioner is located;

In this embodiment, the air conditioner is provided with a temperature sensor and a humidity sensor, which are respectively used for detecting the real-time temperature and real-time humidity of the air conditioner where the air conditioner is located, and the real-time temperature is used as the current temperature value of the current cycle process, and The real-time humidity is used as the current humidity value of the current cycle process;

S502. Determine a current temperature difference between the current temperature value and the set temperature value.

In this embodiment, preferably, in a plurality of modes, such as air conditioning operation cooling, heating, and dehumidification, calculating the determined current temperature difference takes the absolute value of the difference between the current temperature value and the set temperature value;

S503. Determine a first temperature deviation value of the current temperature difference from the first determined first temperature difference value; and a second temperature deviation value of the first temperature difference value and the second temperature difference value determined last time;

In this embodiment, the overall process of the present process may be repeated multiple times periodically, and in each cycle process, the current temperature difference corresponding to each cycle may be separately determined, and this document is taken before the current cycle process. The current temperature difference determined in the two cycles, and the first temperature deviation value and the second temperature deviation value may be calculated according to the current temperature difference between the current period and the first two periods;

S504, performing PID calculation according to the following formula to obtain a target operating frequency of the air conditioner compressor:

Hzout=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hzout is the target operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D _n is the first difference between the current temperature difference and the last determined first temperature difference. The temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference value and the second temperature difference determined last time, P _n is the current temperature difference value, and P _n-1 is the first temperature difference value , P _n-2 is a second temperature difference;

S505. Determine a target humidity range according to the set temperature value.

In this embodiment, the air conditioning system prestores a correspondence relationship between the set temperature value and the target humidity range, as shown in Table 1 in the foregoing embodiment; therefore, according to the correspondence relationship saved in Table 1, it can be found and Setting a target humidity range corresponding to the temperature value;

S506, determining whether the current humidity value is within the target humidity range, if yes, proceeding to step S507, and if not, executing step S508;

S507, does not turn on electric heating;

S508. Calculate and determine an output power of the electric heating, and turn on the running electric heating according to the output power;

S509. The compressor that controls the air conditioner operates at a target operating frequency;

S510, determining whether the current temperature value reaches the set temperature value, if yes, proceeding to step S511, if not, proceeding to step S509;

S511, controlling the compressor to operate at a set minimum frequency, and the inner fan of the air conditioner is operated at a low speed;

S512, the process ends.

It should be understood that the control steps of step S505 to step S508 may be performed synchronously with steps S502 to S504, or may be performed asynchronously, that is, after the target operating frequency of the compressor, step S509 may be controlled to be performed; After the judgment of heating, it is possible to control the operation of turning on or maintaining the electric heating off.

FIG. 6 is a flowchart of the temperature and humidity dual control method according to an exemplary embodiment of the present invention; in the application scenario shown in FIG. 6, the specific control flow of the air conditioner to achieve temperature and humidity dual control is as follows:

S601. The air conditioner obtains a current temperature value and a current humidity value of a space where the air conditioner is located;

In this embodiment, the air conditioner is provided with a temperature sensor and a humidity sensor, which are respectively used for detecting the real-time temperature and real-time humidity of the air conditioner where the air conditioner is located, and the real-time temperature is used as the current temperature of the current cycle. Value, the real-time humidity is taken as the current humidity value of the current cycle process;

S602. Determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value.

Similarly, the calculated current humidity difference value takes the absolute value of the difference between the current humidity value and the set humidity value;

S603. Determine a first temperature deviation value of the current temperature difference from the first determined first temperature difference value; and a second temperature deviation value of the first temperature difference value and the second temperature difference value determined last time, and Go to step S604;

S604. Perform a PID calculation according to the following formula to obtain a first operating frequency of the air conditioner compressor:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D _n is the current temperature difference and the first determined first temperature difference. a temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P _n is a current temperature difference value, and P _n-1 is a first temperature difference Value, P _n-2 is the second temperature difference;

S605. Determine a first humidity deviation value of the current humidity difference value and the first determined first humidity difference value; and a second humidity deviation value of the first humidity difference value and the last determined second humidity difference value, and Step S606 is performed;

In this embodiment, the overall process of the present process may be repeated multiple times periodically, and in each cycle process, the current humidity difference corresponding to each cycle may be separately determined, and this document is taken before the current cycle process. The current temperature difference determined in the two cycles, and the first humidity deviation value and the second humidity deviation value may be calculated according to the current temperature difference between the current period and the first two periods;

S606. Perform a PID calculation according to the following formula to obtain a second operating frequency of the air conditioner compressor:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

Hz2 is the second operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and d _n is the difference between the current humidity difference and the last determined first humidity difference. a humidity deviation value, d _n-1 is a second humidity deviation value of the first humidity difference value and a second humidity difference determined last time, p _n is a current humidity difference value, and p _n-1 is a first humidity difference value Value, p _n-2 is the second humidity difference;

S607, determining whether the first operating frequency is greater than the second operating frequency, if yes, executing step S608, if not, executing step S609;

S608. Determine a first operating frequency as a target operating frequency of the compressor.

S609. Determine a second operating frequency as a target operating frequency of the compressor.

S610, determining whether the current humidity value is within the target humidity range, if yes, proceeding to step S611, and if not, executing step S612;

In this embodiment, the air conditioning system prestores a correspondence between the set temperature value and the target humidity range, as described above. Table 1 shown in the embodiment; therefore, according to the correspondence relationship saved in Table 1, the target humidity range corresponding to the set temperature value can be found;

S611, does not turn on electric heating;

S612. Calculate and determine an output power of the electric heating, and turn on the running electric heating according to the output power;

S613. The compressor that controls the air conditioner operates at a target operating frequency;

S614, it is determined whether the current temperature value reaches the set temperature value, if yes, step S615 is performed, if no, step S613 is continued;

S615. Control the compressor to operate at a set minimum frequency, and the internal fan of the air conditioner operates at a low speed;

S616, the process ends.

7 is a flow chart of a temperature and humidity dual control method according to an exemplary embodiment of the present invention; in the application scenario shown in FIG. 7, the specific control flow of the air conditioner to achieve temperature and humidity dual control is as follows:

S701. The air conditioner obtains a current temperature value and a current humidity value of a space where the air conditioner is located;

S702. Determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value.

S703. Determine a first temperature deviation value of the current temperature difference from the first determined first temperature difference value; and a second temperature deviation value of the first temperature difference value and the second temperature difference value determined last time, and Go to step S704;

S704. Perform a PID calculation according to the following formula to obtain a first operating frequency of the air conditioner compressor:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

S705. Determine a first humidity deviation value of the current humidity difference value and the first determined first humidity difference value; and a second humidity deviation value of the first humidity difference value and the last determined second humidity difference value, and Go to step S706;

S706. Perform a PID calculation according to the following formula to obtain a second operating frequency of the air conditioner compressor:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

S707, determining whether the first operating frequency is greater than the second operating frequency, if yes, executing step S708, if not, executing step S709;

S708. Determine a first operating frequency as a target operating frequency of the compressor;

S709. Determine a second operating frequency as a target operating frequency of the compressor.

S710, determining whether the current temperature difference is within the target temperature difference range, if yes, proceeding to step S711, and if not, executing step S712;

S711, does not turn on electric heating;

S712. Calculate and determine an output power of the electric heating, and turn on the running electric heating according to the output power;

S713. The compressor that controls the air conditioner operates at a target operating frequency;

S714, determining whether the current temperature value reaches the set temperature value, if yes, proceeding to step S715, if not, proceeding to step S713;

S715. Control the compressor to operate at a set minimum frequency, and the internal fan of the air conditioner operates at a low speed;

S716, the process ends.

FIG. 8 is a flowchart of the temperature and humidity dual control method according to an exemplary embodiment of the present invention; in the application scenario shown in FIG. 8 , the specific control flow of the air conditioner to achieve temperature and humidity dual control is as follows:

S801. The air conditioner obtains a current temperature value and a current humidity value of a space where the air conditioner is located;

S802. Determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value.

S803. Determine a first temperature deviation value of the current temperature difference from the first determined first temperature difference value; and a second temperature deviation value of the first temperature difference value and the second temperature difference value determined last time, and Go to step S804;

S804, performing PID calculation according to the following formula to obtain a first operating frequency of the air conditioner compressor:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

S805. Determine a first humidity deviation value of the current humidity difference value and the first determined first humidity difference value; and a second humidity deviation value of the first humidity difference value and the last determined second humidity difference value, and Go to step S806;

S806. Perform a PID calculation according to the following formula to obtain a second operating frequency of the air conditioner compressor:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

S807, determining whether the first operating frequency is greater than the second operating frequency, if yes, proceeding to step S808, if not, executing step S809;

S808. Determine a first operating frequency as a target operating frequency of the compressor.

S809. Determine a second operating frequency as a target operating frequency of the compressor.

S810, determining a target temperature difference range and a target humidity range according to the set temperature value;

In this embodiment, the air conditioning system prestores the correspondence between the set temperature value and the target temperature difference range and the target humidity range, as shown in Table 2 of the foregoing embodiment; therefore, according to the correspondence relationship saved in Table 2, The target temperature difference range and the target humidity range corresponding to the set temperature value can be found;

S811, determining whether the target temperature difference is within the target temperature difference range, and/or the current humidity value is within the target humidity range, if yes, executing step S812, and if not, executing step S813;

S812, does not turn on electric heating;

S813, calculating and determining the output power of the electric heating, and starting the electric heating according to the output power;

S814. The compressor that controls the air conditioner operates at a target operating frequency;

S815, determining whether the current temperature value reaches the set temperature value, if yes, proceeding to step S816, and if not, proceeding to step S814;

S816, controlling the compressor to run at a set minimum frequency, and the inner fan of the air conditioner is operated at a low speed;

S817, the process ends.

FIG. 9 is a flowchart of the temperature and humidity dual control method according to an exemplary embodiment of the present invention; in the application scenario shown in FIG. 9, the specific control flow of the air conditioner to achieve temperature and humidity dual control is as follows:

S901. The air conditioner obtains a current temperature value and a current humidity value of a space where the air conditioner is located;

S902. Determine a current temperature difference between the current temperature value and the set temperature value.

S903. Determine a first temperature deviation value of the current temperature difference from the first determined first temperature difference value; and a second temperature deviation value of the first temperature difference value and the second temperature difference value determined last time;

S904, performing PID calculation according to the following formula to obtain a target operating frequency of the air conditioner compressor:

Hzout=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

S905, determining a target temperature difference range and a target humidity range according to the set temperature value;

S906, determining whether the target temperature difference is within the target temperature difference range, and/or the current humidity value is within the target humidity range, if yes, executing step S907, and if not, executing step S908;

S907, does not turn on electric heating;

S908, calculating and determining the output power of the electric heating, and starting the electric heating according to the output power;

S909. The compressor that controls the air conditioner operates at a target operating frequency;

S910, it is determined whether the current temperature value reaches the set temperature value, if yes, step S911 is performed, if no, step S909 is continued;

S911, the control compressor runs at the set minimum frequency, and the inner fan of the air conditioner operates at a low speed;

S912, the process ends.

In an embodiment of the present invention, an air conditioning temperature and humidity dual control device is provided. The air conditioner provided with the device can be used to perform the temperature and humidity dual control process as shown in FIG. 5 above.

Specifically, the temperature and humidity dual control device comprises:

Obtaining a module, configured to obtain a current temperature value and a current humidity value of a space in which the air conditioner is located;

a first determining module, configured to determine a current temperature difference between the current temperature value and the set temperature value;

The second determining module is configured to determine a target operating frequency of the compressor according to the current temperature difference, and determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current humidity value.

In this embodiment, the second determining module includes:

a first determining submodule, configured to determine a first temperature deviation value of the previous temperature difference and the first determined first temperature difference value; and a first temperature difference value and a second temperature difference value determined last time Two temperature deviation values;

And a second determining submodule configured to determine a target operating frequency of the compressor according to the first temperature deviation value and the second temperature deviation value.

In this embodiment, the second determining sub-module is configured to perform a PID calculation according to the following formula to obtain a target operating frequency:

Hzout=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

In this embodiment, the apparatus further includes a control module, configured to: when the current temperature value reaches the set temperature value, control the compressor to operate at the set minimum frequency, and the internal fan of the air conditioner operates at a low speed.

In this embodiment, the second determining module further includes:

a third determining submodule, configured to determine a target humidity range according to the set temperature value;

The fourth determining sub-module is configured to control to turn on the electric heating when the current humidity value is not in the target humidity range; and to turn off the electric heating when the current humidity value is in the target humidity range.

In another embodiment herein, an air conditioning temperature and humidity dual control device is provided. The air conditioner provided with the device can be used to perform the temperature and humidity dual control process as shown in FIG. 6 above.

Specifically, the temperature and humidity dual control device comprises:

An obtaining unit, configured to obtain a current temperature value and a current humidity value of a space in which the air conditioner is located;

a first determining unit, configured to determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

a second determining unit, configured to determine a first operating frequency of the compressor according to the current temperature difference, and determine a second operating frequency of the compressor according to the current humidity difference;

a third determining unit, configured to determine a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

The fourth determining unit is configured to determine, according to the current humidity value, whether to turn on the electric heating and the output power when the electric heating is turned on.

In this embodiment, the second determining module includes:

And a second determining submodule configured to determine a first operating frequency of the compressor according to the first temperature deviation value and the second temperature deviation value.

In this embodiment, the second determining submodule is configured to perform the PID calculation according to the following formula to obtain the first operating frequency:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hz1 is the target operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D _n is the first difference between the current temperature difference and the last determined first temperature difference. The temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference value and the second temperature difference determined last time, P _n is the current temperature difference value, and P _n-1 is the first temperature difference value P _n-2 is the second temperature difference.

The second determining module further includes:

a third determining submodule, configured to determine a first wetness difference between the front humidity difference and the first determined first humidity difference a degree deviation value; and a second humidity deviation value of the first humidity difference value and the second humidity difference determined last time;

And a fourth determining submodule configured to determine a second operating frequency of the compressor according to the first humidity deviation value and the second humidity deviation value.

In this embodiment, the fourth determining sub-module performs the PID calculation according to the following formula to obtain the second operating frequency:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

Hz2 is the second operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and d _n is the difference between the current humidity difference and the last determined first humidity difference. a humidity deviation value, d _n-1 is a second humidity deviation value of the first humidity difference value and a second humidity difference determined last time, p _n is a current humidity difference value, and p _n-1 is a first humidity difference value The value, p _n-2 is the second humidity difference.

In this embodiment, the third determining module is configured to use a larger value of the first operating frequency and the second operating frequency as the target operating frequency of the compressor.

In this embodiment, the apparatus further includes a first control module configured to control the compressor to operate at the set minimum frequency when the current temperature value reaches the set temperature value, and the internal fan of the air conditioner operates at the low speed.

In this embodiment, the fourth determining module includes:

a fifth determining submodule configured to determine a target humidity range according to the set temperature value;

a second control module, configured to control to turn on the electric heating when the current humidity value is not in the target humidity range;

When the current humidity value is within the target humidity range, the electric heating is not turned on.

In another embodiment herein, an air conditioning temperature and humidity dual control device is provided. The air conditioner provided with the device can be used to perform the temperature and humidity dual control process as shown in FIG. 7 above.

Specifically, the temperature and humidity dual control device comprises:

And a fourth determining unit, configured to determine, according to the current temperature difference, whether to turn on the electric heating and the output power when the electric heating is turned on.

In this embodiment, the second determining module includes:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D _n is the current temperature difference and the first determined first temperature difference. a temperature deviation value, D _n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P _n is a current temperature difference value, and P _n-1 is a first temperature difference Value, P _n-2 is the second temperature difference.

In this embodiment, the second determining module further includes:

a third determining submodule, configured to determine a first humidity deviation value of the previous humidity difference value and the first determined first humidity difference value; and a first humidity difference value and a second humidity difference value determined last time Two humidity deviation value;

In this embodiment, the fourth determining submodule is configured to perform a PID calculation according to the following formula to obtain a second operating frequency:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

In this embodiment, the third determining sub-module is configured to use a larger one of the first operating frequency and the second operating frequency as the target operating frequency of the compressor.

In this embodiment, the fourth determining module is configured to control to turn on the electric heating when the current temperature difference is not in the target temperature difference range; and to turn off the electric heating when the current temperature difference is in the target temperature difference range.

In another embodiment herein, an air conditioning temperature and humidity dual control device is provided. The air conditioner provided with the device can be used to perform the temperature and humidity dual control process as shown in FIG. 8 above.

Specifically, the temperature and humidity dual control device comprises:

a first determining module, configured to determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

a second determining module, configured to determine a first operating frequency of the compressor according to the current temperature difference, and determine a second operating frequency of the compressor according to the current humidity difference;

a third determining module, configured to determine a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

The fourth determining module is configured to determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference and the current humidity value.

In this embodiment, the second determining module includes:

Hz1=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

In this embodiment, the second determining module further includes:

Hz2=Out_gain*[Kp*d _n +Ki*p _n +Kd*(d _n -d _n-1 )];

Where d _n =p _n -p _n-1 , d _n-1 =p _n-1 -p _n-2 ;

In this embodiment, the fourth determining module includes:

a fifth determining submodule, configured to determine a target temperature difference range and a target humidity range according to the set temperature value;

a second control module, configured to control to turn on the electric heating when the target temperature difference is not in the target temperature difference range, and the current humidity value is not in the target humidity range;

When the target temperature difference is within the target temperature difference range, and/or the current humidity value is within the target humidity range, the electric heating is not turned on.

In another embodiment herein, an air conditioning temperature and humidity dual control device is provided. The air conditioner provided with the device can be used to perform the temperature and humidity dual control process as shown in FIG. 9 above.

Specifically, the temperature and humidity dual control device comprises:

The second determining module is configured to determine a target operating frequency of the compressor according to the current temperature difference, and determine whether to turn on the electric heating and the output power when the electric heating is turned on according to the current temperature difference and the current humidity value.

In this embodiment, the second determining module includes:

Hzout=Out_gain*[Kp*D _n +Ki*P _n +Kd*(D _n -D _n-1 )];

Where D _n = P _{n -} P _n-1 , D _n-1 = P _{n-1 -} P _n-2 ;

In this embodiment, the apparatus further includes a first control module, configured to: when the current temperature value reaches the set temperature value, control the compressor to operate at the set minimum frequency, and the internal fan of the air conditioner operates at a low speed.

In this embodiment, the device further includes:

a third determining submodule, configured to determine a target temperature difference range and a target humidity range according to the set temperature value;

a second control module, configured to: when the target temperature difference is not in the target temperature difference range, and the current humidity value is not in the target humidity range, then control to turn on the electric heating;

It should be understood that the present invention is not limited to the details and the modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the accompanying claims.

Claims

A method for temperature and humidity dual control of an air conditioner, characterized in that the method comprises:

Obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located;

Determining a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

Determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operating frequency of the compressor based on the current humidity difference;

Determining a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

Whether to turn on the electric heating and the output power when the electric heating is turned on is determined according to the current temperature difference.
The method of claim 1 wherein said determining a first operating frequency of the compressor based on said current temperature difference comprises:

Determining a first temperature deviation value of the previous temperature difference from the first determined first temperature difference; and a second temperature deviation value of the first temperature difference from the last determined second temperature difference ;

The first operating frequency of the compressor is determined based on the first temperature deviation value and the second temperature deviation value.
The method of claim 2, wherein the determining the first operating frequency of the compressor based on the first temperature deviation value and the second temperature deviation value comprises:

The first operating frequency is calculated according to the following formula:

Hz1=Out_gain*[Kp*D n +Ki*P n +Kd*(D n -D n-1 )];

Where D n = P n - P n-1 , D n-1 = P n-1 - P n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D n is the current temperature difference and the last determined first temperature difference a first temperature deviation value, D n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P n is the current temperature difference value, P n- 1 is the first temperature difference, and P n-2 is the second temperature difference.
The method according to claim 1, wherein said determining a second operating frequency of the compressor based on said current humidity difference comprises:

Determining a first humidity deviation value of the difference between the front humidity difference and the first determined first humidity difference; and a second humidity deviation value of the first humidity difference value and the second humidity difference determined last time ;

The second operating frequency of the compressor is determined based on the first humidity deviation value and the second humidity deviation value.
The method according to claim 4, wherein the determining the second operating frequency of the compressor based on the first humidity deviation value and the second humidity deviation value comprises:

The second operating frequency is calculated according to the following formula:

Hz2=Out_gain*[Kp*d n +Ki*p n +Kd*(d n -d n-1 )];

Where d n =p n -p n-1 , d n-1 =p n-1 -p n-2 ;

Hz2 is the second operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and d n is the current humidity difference and the last determined first humidity difference a first humidity deviation value, d n-1 is a second humidity deviation value of the first humidity difference value and a second humidity difference determined last time, p n is the current humidity difference value, p n- 1 is the first humidity difference value, and p n-2 is the second humidity difference value.
The method of claim 1 wherein determining a target operating frequency of the compressor based on the first operating frequency and the second operating frequency comprises:

Making the value of the first operating frequency and the second operating frequency larger as the target of the compressor Standard operating frequency.
The method of claim 1 further comprising:

When the current temperature value reaches the set temperature value, the compressor is controlled to operate at a set minimum frequency, and the inner fan of the air conditioner operates at a low speed.
The method according to claim 1, wherein the determining whether to turn on the electric heating according to the current temperature difference comprises:

Controlling the opening of the electric heating when the current temperature difference is not within the target temperature difference range;

When the current temperature difference is within the target temperature difference range, the electric heating is not turned on.
A device for controlling temperature and humidity of an air conditioner, characterized in that the device comprises:

An obtaining unit, configured to acquire a current temperature value and a current humidity value of a space in which the air conditioner is located;

a first determining unit, configured to determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

a second determining unit, configured to determine a first operating frequency of the compressor according to the current temperature difference, and determine a second operating frequency of the compressor according to the current humidity difference;

a third determining unit, configured to determine a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

And a fourth determining unit, configured to determine, according to the current temperature difference, whether to turn on the electric heating and the output power when the electric heating is turned on.
The apparatus according to claim 9, wherein the second determining module comprises:

a first determining submodule, configured to determine a first temperature deviation value of the previous temperature difference value and a first determined first temperature difference value; and the first temperature difference value and a second temperature determined last time a second temperature deviation value of the difference;

a second determining submodule configured to determine the first operating frequency of the compressor based on the first temperature deviation value and the second temperature deviation value.
The apparatus according to claim 10, wherein the second determining submodule is configured to perform the PID calculation according to the following formula to obtain the first operating frequency:

Hz1=Out_gain*[Kp*D n +Ki*P n +Kd*(D n -D n-1 )];

Where D n = P n - P n-1 , D n-1 = P n-1 - P n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D n is the current temperature difference and the last determined first temperature difference a first temperature deviation value, D n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P n is the current temperature difference value, P n- 1 is the first temperature difference, and P n-2 is the second temperature difference.
A method for temperature and humidity dual control of an air conditioner, characterized in that the method comprises:

Obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located;

Determining a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

Determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operating frequency of the compressor based on the current humidity difference;

Determining a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

Whether to turn on the electric heating and the output power when the electric heating is turned on is determined according to the current temperature difference value and the current humidity value.
The method of claim 12, wherein the determining the first operating frequency of the compressor based on the current temperature difference comprises:

Determining a first temperature deviation value of the previous temperature difference from the first determined first temperature difference; and a second temperature deviation value of the first temperature difference from the last determined second temperature difference ;

The first operating frequency of the compressor is determined based on the first temperature deviation value and the second temperature deviation value.
The method of claim 13, wherein the determining the first operating frequency of the compressor based on the first temperature deviation value and the second temperature deviation value comprises:

The first operating frequency is calculated according to the following formula:

Hz1=Out_gain*[Kp*D n +Ki*P n +Kd*(D n -D n-1 )];

Where D n = P n - P n-1 , D n-1 = P n-1 - P n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D n is the current temperature difference and the last determined first temperature difference a first temperature deviation value, D n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P n is the current temperature difference value, P n- 1 is the first temperature difference, and P n-2 is the second temperature difference.
The method according to claim 12, wherein said determining a second operating frequency of the compressor based on said current humidity difference comprises:

Determining a first humidity deviation value of the difference between the front humidity difference and the first determined first humidity difference; and a second humidity deviation value of the first humidity difference value and the second humidity difference determined last time ;

The second operating frequency of the compressor is determined based on the first humidity deviation value and the second humidity deviation value.
The method according to claim 15, wherein said determining said second operating frequency of said compressor based on said first humidity deviation value and said second humidity deviation value comprises:

The second operating frequency is calculated according to the following formula:

Hz2=Out_gain*[Kp*d n +Ki*p n +Kd*(d n -d n-1 )];

Where d n =p n -p n-1 , d n-1 =p n-1 -p n-2 ;

Hz2 is the second operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and d n is the current humidity difference and the last determined first humidity difference a first humidity deviation value, d n-1 is a second humidity deviation value of the first humidity difference value and a second humidity difference determined last time, p n is the current humidity difference value, p n- 1 is the first humidity difference value, and p n-2 is the second humidity difference value.
The method according to claim 12, wherein determining a target operating frequency of the compressor based on the first operating frequency and the second operating frequency comprises:

The larger of the first operating frequency and the second operating frequency is the target operating frequency of the compressor.
The method of claim 12, wherein the method further comprises:

When the current temperature value reaches the set temperature value, the compressor is controlled to operate at a set minimum frequency, and the inner fan of the air conditioner operates at a low speed.
The method according to claim 12, wherein the determining whether to turn on the electric heating according to the current temperature difference value and the current humidity value comprises:

Determining a target temperature difference range and a target humidity range according to the set temperature value;

When the target temperature difference is not in the target temperature difference range, and the current humidity value is not in the target humidity range, then controlling to turn on the electric heating;

When the target temperature difference is in the target temperature difference range, and/or the current humidity value is in the The electric heating is not turned on when the target humidity range is exceeded.
A device for controlling temperature and humidity of an air conditioner, characterized in that the device comprises:

An obtaining unit, configured to acquire a current temperature value and a current humidity value of a space in which the air conditioner is located;

a first determining unit, configured to determine a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

a second determining unit, configured to determine a first operating frequency of the compressor according to the current temperature difference, and determine a second operating frequency of the compressor according to the current humidity difference;

a third determining unit, configured to determine a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

And a fourth determining unit, configured to determine, according to the current temperature difference value and the current humidity value, whether to turn on the electric heating and the output power when the electric heating is turned on.
The apparatus according to claim 20, wherein the second determining module comprises:

a first determining submodule, configured to determine a first temperature deviation value of the previous temperature difference value and a first determined first temperature difference value; and the first temperature difference value and a second temperature determined last time a second temperature deviation value of the difference;

a second determining submodule configured to determine the first operating frequency of the compressor based on the first temperature deviation value and the second temperature deviation value.
The apparatus according to claim 21, wherein the second determining submodule is configured to perform the PID calculation according to the following formula to obtain the first operating frequency:

Hz1=Out_gain*[Kp*D n +Ki*P n +Kd*(D n -D n-1 )];

Where D n = P n - P n-1 , D n-1 = P n-1 - P n-2 ;

Hz1 is the first operating frequency, Out_gain is the output coefficient, Kp is the proportional control amount, Ki is the integral control amount, Kd is the differential control amount, and D n is the current temperature difference and the last determined first temperature difference a first temperature deviation value, D n-1 is a second temperature deviation value of the first temperature difference value and a second temperature difference determined last time, P n is the current temperature difference value, P n- 1 is the first temperature difference, and P n-2 is the second temperature difference.
A method for controlling self-cleaning of an air conditioner, characterized in that the method comprises:

Obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located;

Determining a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

Determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operating frequency of the compressor based on the current humidity difference;

Determining a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

Whether to turn on the electric heating and the output power when the electric heating is turned on is determined according to the current temperature difference.
A method for controlling self-cleaning of an air conditioner, characterized in that the method comprises:

Obtaining a current temperature value and a current humidity value of a space in which the air conditioner is located;

Determining a current temperature difference between the current temperature value and the set temperature value, and a current humidity difference between the current humidity value and the set humidity value;

Determining a first operating frequency of the compressor based on the current temperature difference, and determining a second operating frequency of the compressor based on the current humidity difference;

Determining a target operating frequency of the compressor according to the first operating frequency and the second operating frequency;

Determining whether to turn on electric heating and electric heating according to the current temperature difference and the current humidity value