CN114963428A - Constant-temperature dehumidification control method and system for air conditioner and constant-temperature dehumidification air conditioner - Google Patents

Abstract

The invention provides a constant temperature and dehumidification control method and system for an air conditioner, and a constant temperature and dehumidification air conditioner, comprising: opening a target electronic expansion valve, adjusting the opening degree of the target electronic expansion valve to be the target initial opening degree; information and air outlet temperature information; according to the difference between the air inlet temperature information and the air outlet temperature information, the target initial opening of the target electronic expansion valve is regulated; the target electronic expansion valve is used to adjust all the The flow rate of the gaseous refrigerant in the capillary tube of the indoor unit is controlled to control the temperature information of the air inlet and the temperature information of the air outlet within the target range. The method of the invention can effectively control the heat released by the flow of the high-temperature gaseous refrigerant in the capillary tube, perform precise temperature compensation for the dehumidified air flow, ensure that the temperature of the air inlet of the indoor unit and the temperature of the air outlet are always consistent, and achieve high-quality indoor constant temperature Dehumidification effect, and the technical process is simple to achieve.

Description

A kind of air conditioner constant temperature dehumidification control method, system and constant temperature dehumidification air conditioner

technical field

The invention relates to the technical field of air conditioners, in particular to a constant temperature dehumidification control method and system for an air conditioner and a constant temperature dehumidification air conditioner.

Background technique

With the development of smart homes, in order to meet the diverse needs of users, the design of air conditioners is more energy-saving and environmentally friendly, and the functions are also developing in a diversified direction.

Existing air conditioners generally have a constant temperature dehumidification function, which can well meet the needs of users in areas with heavy humidity, and at the same time, avoid user discomfort caused by excessive temperature difference between the air inlet and outlet of the indoor unit. In the prior art, a throttling component of a two-way valve is usually added to the evaporator to realize the function of constant temperature dehumidification of the air conditioner. However, the technology of this method is complicated, and the constant temperature dehumidification effect is not ideal.

Therefore, how to better realize the constant temperature dehumidification function of the air conditioner has become an urgent technical problem to be solved in the industry.

SUMMARY OF THE INVENTION

The present invention provides a constant temperature dehumidification control method and system for an air conditioner, and a constant temperature dehumidification air conditioner, so as to better realize the constant temperature dehumidification function of the air conditioner.

The invention provides a constant temperature dehumidification control method for an air conditioner, comprising:

Open the target electronic expansion valve, and adjust the opening degree of the target electronic expansion valve to be the target initial opening degree;

Obtain the air inlet temperature information and air outlet temperature information of the indoor unit;

According to the difference between the air inlet temperature information and the air outlet temperature information, the target initial opening of the target electronic expansion valve is regulated; the target electronic expansion valve is used to regulate the gaseous state in the capillary tube of the indoor unit The flow rate of the refrigerant is controlled to control the difference between the temperature information of the air inlet and the temperature information of the air outlet within the target range.

The present invention provides a method for controlling constant temperature and dehumidification of an air conditioner. According to the difference between the temperature information of the air inlet and the temperature information of the air outlet, the target initial opening degree of the target electronic expansion valve is regulated and controlled, including:

When it is determined that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information is greater than the first threshold, according to the first target rate, on the basis of the target initial opening degree , increasing the opening of the target electronic expansion valve;

or,

When it is determined that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information is less than the second threshold, according to the second target rate, on the basis of the target initial opening degree , reducing the opening of the target electronic expansion valve;

or,

In the case of judging that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information satisfies the first target threshold range, keep the opening degree of the target electronic expansion valve as the target initial value; The first target threshold range is determined based on the first threshold and the second threshold.

The present invention provides a method for controlling the constant temperature and dehumidification of an air conditioner, wherein the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted to be the target initial opening degree, including:

In the case of judging that the air conditioner is not running in the constant temperature dehumidification mode, keep the current preset mode running, and obtain indoor temperature information and indoor humidity information;

When the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted to be the target initial opening Spend.

The present invention provides a method for controlling constant temperature and dehumidification of an air conditioner. According to the difference between the temperature information of the air inlet and the temperature information of the air outlet, the target initial opening degree of the target electronic expansion valve is regulated and controlled, including:

When the difference between the air inlet temperature information and the air outlet temperature information is greater than a third threshold, according to the first target rate, on the basis of the target initial opening degree, increase the target electronic expansion valve opening;

or,

When the difference between the air inlet temperature information and the air outlet temperature information is less than a fourth threshold, reduce the target electronic expansion valve on the basis of the target initial opening according to the second target rate opening;

or,

In the case that the difference between the air inlet temperature information and the air outlet temperature information satisfies the second target threshold range, keep the opening degree of the target electronic expansion valve as the target initial opening degree; the second target threshold value range Determined based on the third threshold and the fourth threshold.

The method for controlling the constant temperature and dehumidification of an air conditioner provided by the present invention, after adjusting the target initial opening of the target electronic expansion valve, further comprises:

In the case of detecting that the indoor humidity information is less than a second humidity threshold, closing the target electronic expansion valve;

Switch the operation mode of the air conditioner back to the preset mode.

The present invention provides a method for controlling constant temperature and dehumidification of an air conditioner, wherein the opening degree of the target electronic expansion valve ranges from 0 to 480 steps.

The present invention also provides a constant temperature dehumidification control system for an air conditioner, comprising:

an opening module for opening the target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be the target initial opening degree;

The acquisition module is used to acquire the air inlet temperature information and air outlet temperature information of the indoor unit;

a regulation module, configured to regulate the target initial opening of the target electronic expansion valve according to the difference between the air inlet temperature information and the air outlet temperature information; the target electronic expansion valve is used to regulate the indoor The flow rate of the gaseous refrigerant in the capillary tube of the machine is controlled to control the difference between the temperature information of the air inlet and the temperature information of the air outlet within the target range.

The present invention also provides a constant temperature dehumidification air conditioner, including an indoor unit and an outdoor unit, the outdoor unit includes a condenser, an air conditioner compressor, a control device and a target electronic expansion valve, and the indoor unit includes an evaporator, a capillary tube, and a temperature sensor and humidity sensor, the target electronic expansion valve is arranged on the communication pipe between the air-conditioning compressor exhaust port and the capillary air inlet, the air-conditioning compressor, the target electronic expansion valve, the temperature The sensor and the humidity sensor are respectively electrically connected with the control device;

The control device includes a processor, a memory, and a computer program stored on the memory and running on the processor. When the processor executes the program, the air conditioner can achieve constant temperature and dehumidification as described above. Control Method.

The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements any one of the above-mentioned methods for controlling constant temperature and dehumidification of an air conditioner.

The present invention also provides a computer program product, including a computer program, which, when executed by a processor, implements any one of the above-mentioned methods for controlling constant temperature and dehumidification of an air conditioner.

The invention provides a constant temperature dehumidification control method and system for an air conditioner and a constant temperature dehumidification air conditioner. By adding a target electronic expansion valve, the target electronic expansion valve can control the flow rate of the high temperature gaseous refrigerant in the capillary tube of the indoor unit, and when the user turns on the constant temperature of the air conditioner When dehumidifying function, open the target electronic expansion valve, adjust the opening degree of the target electronic expansion valve as the target initial opening degree; and then calculate the air inlet temperature information and air outlet temperature information by acquiring the air inlet temperature information and air outlet temperature information of the indoor unit Based on the difference between the air inlet temperature information and the air outlet temperature information, the target initial opening of the target electronic expansion valve can be effectively adjusted, which can effectively control the heat released by the flow of the high-temperature gaseous refrigerant in the capillary. , Make accurate temperature compensation for the air flow after dehumidification, ensure that the temperature of the air inlet of the indoor unit is always consistent with the temperature of the air outlet, and achieve high-quality indoor constant temperature dehumidification effect, and the technical process is simple.

Description of drawings

In order to explain the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are the For some embodiments of the invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the system structure schematic diagram of the constant temperature dehumidification air conditioner provided by the present invention;

2 is a schematic flowchart of a method for controlling constant temperature and dehumidification of an air conditioner provided by the present invention;

3 is a schematic structural diagram of a constant temperature dehumidification control system for an air conditioner provided by the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The method and system for controlling constant temperature and dehumidification of an air conditioner and the constant temperature and dehumidification air conditioner of the present invention will be described below with reference to FIGS. 1 to 3 .

FIG. 1 is a schematic diagram of the system structure of the constant temperature dehumidification air conditioner provided by the present invention. As shown in FIG. 1 , the constant temperature dehumidification air conditioner includes an indoor unit and an outdoor unit;

Among them, the outdoor unit includes a condenser, an air conditioner compressor, a control device and a target electronic expansion valve, and the indoor unit includes an evaporator, a capillary tube, a temperature sensor and a humidity sensor, and the target electronic expansion valve is set at the air conditioner compressor exhaust port and capillary tube intake. On the communication pipeline between the ports, the air conditioner compressor, the target electronic expansion valve, the temperature sensor and the humidity sensor are respectively electrically connected with the control device;

The control device includes a processor, a memory, and a computer program stored on the memory and running on the processor. When the processor executes the program, the processor can execute the compressor frequency control-based constant temperature and dehumidification method for an air conditioner provided by the present invention.

In this embodiment, the temperature sensor can be used to detect the air inlet temperature information and air outlet temperature information of the indoor unit, as well as the indoor ambient temperature, and send the detected temperature information to the control device; the humidity sensor can be used to detect Indoor ambient humidity, and send the detected indoor ambient humidity information to the control device.

In this embodiment, while dehumidifying the room, the air conditioner draws out a high-temperature gaseous refrigerant through the exhaust port of the air conditioner compressor. The refrigerant passes through the condenser, throttling device, and evaporator, and then returns to the air conditioner compressor for a reciprocating cycle. After adjusting the target electronic expansion valve, by placing the capillary tube under the evaporator, the capillary tube transmits the high temperature refrigerant temperature to the room;

The air inlet of the indoor unit first inhales the air, absorbs heat from the evaporator, the air liquefies when it is cold, and turns into condensed water and discharges the indoor unit to achieve the effect of dehumidification. While the evaporator dehumidifies and cools down, the cold air passes through the high temperature capillary tube. , absorb the heat of the capillary tube, warm the cold air, realize the same temperature of the air inlet and outlet of the air conditioner indoor unit, and achieve the purpose of not lowering the indoor temperature, thereby realizing the adjustment of indoor constant temperature dehumidification and other modes.

Fig. 2 is the schematic flow chart of the air conditioner constant temperature dehumidification control method provided by the present invention, as shown in Fig. 2, including:

Step 110, open the target electronic expansion valve, and adjust the opening degree of the target electronic expansion valve to be the target initial opening degree;

Specifically, the target electronic expansion valve described in the embodiment of the present invention can be used to control the flow rate of the gaseous refrigerant in the capillary tube of the indoor unit. That is to say, by controlling the opening of the target electronic expansion valve and the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit, the heat released by the capillary tube to the space can be controlled, so that the effect of temperature compensation for the gas at the gas outlet of the evaporator can be realized.

The target initial opening degree described in the embodiments of the present invention refers to a preset initial opening degree for opening the target electronic expansion valve, which can be set according to actual design requirements, for example, can be set to 240 steps.

It should be noted that, in this embodiment, the opening degree of the target electronic expansion valve used in the present invention ranges from 0 to 480 steps.

In this embodiment, by using a target electronic expansion valve with a larger opening range, the opening degree of the target electronic expansion valve can be regulated in a wide range during the dehumidification process of the air conditioner, and the indoor unit capillary tube can be controlled more accurately. The heat compensation of the gas at the air outlet of the evaporator is beneficial to more effectively achieve the effect of constant temperature and dehumidification of the air conditioner.

Step 120, acquiring the air inlet temperature information and the air outlet temperature information of the indoor unit;

In this embodiment, the temperature information of the air inlet and the temperature information of the air outlet of the indoor unit can be collected through the temperature sensor preset in the indoor unit.

The method of the embodiment of the present invention is based on the technical source of constant temperature dehumidification, by directly monitoring the air inlet temperature information and the air outlet temperature information of the indoor unit, collecting the air inlet temperature information and the air outlet temperature information in real time, and judging whether the air conditioner is after dehumidification, The temperature difference between the air inlet temperature and the air outlet temperature is within the target range.

Step 130: According to the difference between the air inlet temperature information and the air outlet temperature information, the target initial opening of the target electronic expansion valve is regulated; the target electronic expansion valve is used to adjust the flow rate of the gaseous refrigerant in the capillary tube of the indoor unit to Control the difference between the air inlet temperature information and the air outlet temperature information within the target range.

Specifically, the target range described in the embodiment of the present invention refers to the temperature difference threshold range between the air inlet temperature information and the air outlet temperature information of the indoor unit, which can indicate that the air inlet temperature information is consistent with the air outlet temperature information, or The temperature difference representing the temperature information of the air inlet and the temperature information of the air outlet is within an acceptable range, which can be specifically set according to the actual scene, which is not specifically limited in the present invention.

In this step, after obtaining the air inlet temperature information T1 and the air outlet temperature information T2 of the indoor unit, the difference between T1 and T2 can be calculated to determine whether the air inlet temperature and the air outlet temperature of the indoor unit are within the target range;

Further, the target initial opening degree of the target electronic expansion valve can be regulated according to the difference between the air inlet temperature information and the air outlet temperature information of the indoor unit, so that the heat released by the high temperature gaseous refrigerant flow in the capillary tube can be effectively controlled, giving The air flow after dehumidification is accurately temperature compensated, and the temperature information of the air inlet is controlled to be consistent with the temperature information of the air outlet, so as to achieve the effect of high-quality constant temperature dehumidification.

In the method for controlling the constant temperature and dehumidification of an air conditioner according to the embodiment of the present invention, by adding a target electronic expansion valve, the target electronic expansion valve can control the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit. When the user turns on the constant temperature and dehumidification function of the air conditioner, the target electronic expansion valve is turned on. Adjust the opening degree of the target electronic expansion valve as the target initial opening degree; then by obtaining the air inlet temperature information and air outlet temperature information of the indoor unit, calculate the difference between the air inlet temperature information and the air outlet temperature information, based on the air inlet temperature information and the air outlet temperature information. The difference between the temperature information of the air outlet and the temperature information of the air outlet can be used to effectively control the target initial opening of the target electronic expansion valve, which can effectively control the heat released by the flow of high-temperature gaseous refrigerant in the capillary tube, and accurately control the air flow after dehumidification. The temperature compensation ensures that the air inlet temperature of the indoor unit is always consistent with the air outlet temperature, achieving high-quality indoor constant temperature dehumidification effect, and the technical process is simple to achieve.

In some embodiments, the target initial opening degree of the target electronic expansion valve is regulated according to the difference between the air inlet temperature information and the air outlet temperature information, including:

When it is judged that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information is greater than the first threshold, increase the target electronic expansion according to the first target rate and on the basis of the target initial opening degree valve opening;

Specifically, the first threshold described in the embodiment of the present invention is a preset temperature threshold, which is used to control the opening degree of the target electronic expansion valve when the air conditioner is in a constant temperature and dehumidification mode.

Preferably, in this embodiment, the first threshold may be 0.5°C.

The first target rate described in the embodiment of the present invention refers to a preset increase rate value of the target electronic expansion valve opening degree.

Preferably, in this embodiment, the first target rate may be set to 1 opening/1 second.

In this embodiment, when the user turns on the air conditioner and selects the constant temperature dehumidification mode, the air conditioner is switched to the constant temperature dehumidification mode, and the compressor of the air conditioner is turned on at this time, and the target electronic expansion valve is also opened at the same time. The opening of the expansion valve is the target initial opening, for example, the target initial opening is 240 steps.

In this embodiment, when it is determined that the air conditioner is in the constant temperature dehumidification mode, the temperature information of the air inlet and the temperature of the air outlet of the indoor unit are obtained, and at the same time, it is determined that the difference between the temperature information T1 of the air inlet and the temperature information T2 of the air outlet is greater than In the case of the first threshold, that is, T1-T2>0.5℃, that is to say, when the target electronic expansion valve is at the target initial opening degree, the air inlet temperature is higher than the air outlet temperature, and the capillary of the indoor unit is fed by high-temperature gaseous refrigerant. The temperature compensation provided by the air flow at the air outlet is insufficient, so it is necessary to further increase the opening of the target electronic expansion valve to increase the flow rate of the high-temperature gaseous refrigerant in the capillary.

Further, in this embodiment, according to the first target rate, such as 1 opening degree/1 second, on the basis of the target initial opening degree, the opening degree of the target electronic expansion valve is gradually increased, and the opening degree in the capillary is increased. The flow rate of high-temperature gaseous refrigerant controls the temperature information of the air outlet of the indoor unit to be consistent with the temperature information of the air inlet.

In some embodiments, when it is judged that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information is less than a second threshold, according to the second target rate, on the basis of the target initial opening degree , reduce the opening of the target electronic expansion valve;

In this embodiment, the second threshold described in the embodiment of the present invention is also a preset temperature threshold, which is also used to regulate the opening of the target electronic expansion valve when the air conditioner is in the constant temperature dehumidification mode.

Preferably, in this embodiment, the second threshold may be -0.5°C.

The second target rate described in the embodiment of the present invention refers to a preset reduction rate value of the target electronic expansion valve opening degree.

Preferably, in this embodiment, the second target rate can also be set to 1 opening/1 second.

When it is determined that the air conditioner is in the constant temperature dehumidification mode, the temperature information of the air inlet and the temperature of the air outlet of the indoor unit are obtained, and at the same time, it is determined that the difference between the temperature information T1 of the air inlet and the temperature information T2 of the air outlet is smaller than the second threshold. , that is, T1-T2<-0.5. That is to say, when the target electronic expansion valve is at the target initial opening, the temperature of the air inlet should be lower than the temperature of the air outlet, and the capillary of the indoor unit provides too much temperature compensation for the air flow at the air outlet through the high-temperature gaseous refrigerant. The opening of the small target electronic expansion valve is used to reduce the flow rate of the high-temperature gaseous refrigerant in the capillary.

Further, in this embodiment, according to the second target rate, such as 1 opening degree/1 second, on the basis of the target initial opening degree, the opening degree of the target electronic expansion valve is gradually reduced, and the opening degree of the indoor unit capillary is reduced. The flow of high-temperature gaseous refrigerant, so as to control the temperature information of the air outlet of the indoor unit to be consistent with the temperature information of the air inlet.

In some embodiments, when it is judged that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information meets the first target threshold range, the opening degree of the target electronic expansion valve is kept as the target initial opening. degree; the first target threshold range is determined based on the first threshold and the second threshold.

Specifically, the first target threshold value range described in the embodiment of the present invention is determined based on the first threshold value and the second threshold value, which is used to determine whether to adjust the opening degree of the target electronic expansion valve when the air conditioner is in the constant temperature and dehumidification mode. Threshold range to hold.

Preferably, in this embodiment, the first target threshold range may be -0.5°C to 0.5°C, including -0.5°C and 0.5°C. That is to say, when it is judged that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information T1 and the air outlet temperature information T2 meets the first target threshold range, that is, it is judged that 0.5°C≥T1-T2≥-0.5°C, it is also That is to say, when the target electronic expansion valve is at the target initial opening, the air inlet temperature and the air outlet temperature are at the same level, and the capillary tube of the indoor unit provides appropriate temperature compensation for the air flow at the air outlet through the high-temperature gaseous refrigerant. The opening degree of the electronic expansion valve is regulated, therefore, the opening degree of the target electronic expansion valve can continue to be maintained as the target initial opening degree, that is, the opening degree of the target electronic expansion valve can be maintained unchanged at 240 steps at this time.

In the method of the embodiment of the present invention, in the scenario where the air conditioner is in the constant temperature dehumidification mode, by obtaining the difference between the temperature information of the air inlet of the indoor unit and the temperature information of the air outlet, and based on the first target threshold range, it is determined whether the target electronic expansion valve needs to be adjusted. Adjusting the opening degree can effectively control the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit, and ensure that the temperature of the air inlet of the indoor unit and the temperature of the air outlet are always consistent, so as to achieve high-quality indoor constant temperature dehumidification effect.

In some embodiments, the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted to be the target initial opening degree, including:

In the case of judging that the air conditioner is not running in the constant temperature dehumidification mode, keep the current preset mode running, and obtain indoor temperature information and indoor humidity information;

When the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted to the target initial opening degree.

Specifically, the target temperature threshold described in the embodiment of the present invention refers to a preset temperature threshold, which is used to compare with the detected indoor temperature to determine whether to open the target electronic expansion valve when the air conditioner is not running in the constant temperature and dehumidification mode .

Preferably, in this embodiment, the target temperature threshold may be 26°C.

The first humidity threshold described in the embodiment of the present invention refers to a preset humidity threshold, which is used to compare with the detected indoor humidity to determine whether to open the target electronic expansion valve when the air conditioner is not running in the constant temperature and dehumidification mode; It is determined according to the comfortable humidity range of the human body surface, wherein the humidity range of the human body surface comfort is 45% to 65%.

Preferably, in this embodiment, the first humidity threshold may be 70%.

The fact that the air conditioner is not in the constant temperature dehumidification mode described in the embodiments of the present invention refers to the preset mode that the air conditioner is in when the user selects the normal mode to run the refrigeration or dehumidification function, that is, the operation mode corresponding to the refrigeration or dehumidification function.

Further, in this embodiment, when it is determined that the air conditioner is not in the constant temperature and dehumidification mode, the current preset mode is maintained to continue to operate, and at the same time, the indoor temperature information and indoor temperature information are obtained through the temperature sensor and the humidity sensor in the indoor unit, respectively. humidity information;

When the indoor temperature information is lower than the target temperature threshold, such as 26°C, and the indoor humidity information is higher than the first humidity threshold, such as 70%, the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted to the target initial opening. degree, and carry out the treatment of indoor constant temperature and dehumidification.

In the method of the embodiment of the present invention, in the scenario where the user selects the normal mode to run the cooling or dehumidification function, and the air conditioner is not in the constant temperature dehumidification mode, the indoor temperature and humidity can also be monitored in real time, and the target temperature and humidity conditions are satisfied to start the target. The electronic expansion valve enables the air conditioner to perform constant temperature dehumidification, which can ensure that the user can also achieve a large amount of dehumidification and a small amount of cooling in the normal mode, improving the user's comfort and experience.

In some embodiments, when it is determined that the air conditioner is not operating in the constant temperature dehumidification mode, and the indoor temperature information is lower than the target temperature threshold, and the indoor humidity information is higher than the first humidity threshold, the temperature information of the air inlet and the temperature of the air outlet are determined according to The difference value of the information controls the target initial opening of the target electronic expansion valve, and also includes:

When the difference between the air inlet temperature information and the air outlet temperature information is greater than the third threshold, according to the first target rate, on the basis of the target initial opening degree, increase the opening degree of the target electronic expansion valve;

Specifically, the third threshold described in the embodiment of the present invention is a preset temperature threshold, which is used to regulate the opening degree of the target electronic expansion valve when the air conditioner is not running in the constant temperature dehumidification mode.

Preferably, in this embodiment, the third threshold may be 10°C.

In this embodiment, when it is determined that the indoor temperature information is lower than the target temperature threshold of 26°C and the indoor humidity information is higher than the first humidity threshold by 70%, the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted as the target After the initial opening, obtain the temperature information T1 of the air inlet and the temperature information T2 of the air outlet through the temperature sensor of the indoor unit. If the difference between T1 and T2 is greater than the third threshold, that is, T1-T2>10℃, that is to say, At this time, the target electronic expansion valve is at the target initial opening, the air inlet temperature is much higher than the air outlet temperature, and the capillary tube of the indoor unit through the high temperature gaseous refrigerant gives insufficient temperature compensation to the air flow from the air outlet, so it is necessary to further increase the target The opening of the electronic expansion valve increases the flow of the high-temperature gaseous refrigerant in the capillary.

Further, in this embodiment, according to the first target rate, such as 1 opening degree/1 second, on the basis of the target initial opening degree of 240 steps, the opening degree of the target electronic expansion valve is gradually increased, and the capillary tube is enlarged. The flow rate of the high temperature gaseous refrigerant in the indoor unit is controlled, and the temperature difference between the temperature information of the air outlet of the indoor unit and the temperature information of the air inlet is controlled within an acceptable range, so as to avoid the discomfort of the user's body caused by the excessive temperature difference.

In some embodiments, when the difference between the air inlet temperature information and the air outlet temperature information is less than the fourth threshold, the opening of the target electronic expansion valve is reduced based on the target initial opening degree according to the second target rate. Spend;

Specifically, the fourth threshold described in the embodiment of the present invention is also a preset temperature threshold, which is also used to regulate the opening of the target electronic expansion valve when the air conditioner is not running in the constant temperature dehumidification mode.

Preferably, in this embodiment, the fourth threshold may take a value of 8°C.

In this embodiment, similarly, when it is determined that the air conditioner is not running in the constant temperature and dehumidification mode, the indoor temperature information is determined to be lower than the target temperature threshold of 26°C, and the indoor humidity information is higher than the first humidity threshold of 70%, the target electronic device is turned on. Expansion valve, after adjusting the opening degree of the target electronic expansion valve to the target initial opening degree, obtain the air inlet temperature information T1 and the air outlet temperature information T2 through the temperature sensor of the indoor unit, if the difference between T1 and T2 is less than the fourth threshold , that is, T1-T2<8℃, that is to say, when the target electronic expansion valve is at the target initial opening degree, the overall trend of temperature change is that the temperature of the air outlet is higher than that of the air inlet, and the temperature of the air outlet needs to be reduced as much as possible. Therefore, it can be realized by further reducing the opening degree of the target electronic expansion valve and controlling and reducing the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit.

Further, in this embodiment, according to the second target rate, such as 1 opening degree/1 second, on the basis of the target initial opening degree of 240 steps, the opening degree of the target electronic expansion valve is gradually reduced, and the opening degree of the target electronic expansion valve is gradually reduced. The flow rate of the high temperature gaseous refrigerant is controlled, so as to control the temperature difference between the air outlet temperature information of the indoor unit and the air inlet temperature information within an acceptable range, so as to avoid the discomfort of the user's body caused by the excessive temperature difference.

In some embodiments, when the difference between the air inlet temperature information and the air outlet temperature information satisfies the second target threshold range, the opening degree of the target electronic expansion valve is kept as the target initial opening degree; the second target threshold value range is based on the second target threshold value range. Three thresholds and a fourth threshold are determined.

Specifically, the second target threshold range described in the embodiment of the present invention is determined based on the third threshold and the fourth threshold, which is used to determine the opening of the target electronic expansion valve when the air conditioner is not running in the constant temperature and dehumidification mode. The threshold range over which the degree is held.

Preferably, in this embodiment, the first target threshold range may be 8°C to 10°C, including 8°C and 10°C. That is to say, when it is determined that the air conditioner is not running in the constant temperature and dehumidification mode, the indoor temperature information is determined to be lower than the target temperature threshold of 26°C, and the indoor humidity information is higher than the first humidity threshold of 70%, the target electronic expansion valve is opened, and the target electronic expansion valve is adjusted. After the opening degree of the electronic expansion valve is the target initial opening degree, the air inlet temperature information T1 and the air outlet temperature information T2 are obtained through the temperature sensor of the indoor unit. If the difference between T1 and T2 meets the second target threshold range, That is, 10℃≥T1-T2≥8℃, that is to say, when the target electronic expansion valve is at the target initial opening degree, the temperature difference between the air inlet temperature and the air outlet temperature is between 8℃ and 10℃, and there is no need to adjust the target electronic expansion valve. The opening degree of the target electronic expansion valve can be regulated and controlled, and the opening degree of the target electronic expansion valve can be maintained as the target initial opening degree, that is, the opening degree of the target electronic expansion valve can be maintained unchanged at 240 steps at this time.

In the method according to the embodiment of the present invention, in the scenario where the air conditioner is not in the constant temperature dehumidification mode but in the normal mode with the cooling or dehumidification function running, by acquiring the difference between the air inlet temperature information and the air outlet temperature information of the indoor unit, based on the second The target threshold range is used to determine whether it is necessary to adjust the opening of the target electronic expansion valve. It can also effectively control the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit to ensure that the temperature difference between the air inlet and outlet of the indoor unit is not too large. Within an acceptable range, it can achieve a large amount of dehumidification and a small amount of cooling effect, which is conducive to improving the user experience.

In some embodiments, after adjusting the target initial opening degree of the target electronic expansion valve, the method further includes:

In the case of detecting that the indoor humidity information is less than the second humidity threshold, close the target electronic expansion valve;

Switch the operating mode of the air conditioner back to the previous preset mode.

Specifically, the second humidity threshold described in the embodiment of the present invention refers to another preset humidity threshold, which is used to compare with the detected indoor humidity to determine whether the target electronic expansion needs to be turned off after the air conditioner performs constant temperature dehumidification. valve; it is also determined according to the comfortable humidity range on the human body surface.

Preferably, in this embodiment, the second humidity threshold may be 55%.

That is to say, in this embodiment, after judging that the air conditioner is not in the constant temperature dehumidification mode, the target electronic expansion valve is opened, the target initial opening degree of the target electronic expansion valve is regulated, and after the indoor temperature is dehumidified, the control device controls The humidity sensor of the indoor unit continuously detects the indoor humidity information. After it is determined that the indoor humidity has dropped to 55%, the target electronic expansion valve will be automatically closed, and the operation mode of the air conditioner will be switched back to the previous preset mode.

In the method of the embodiment of the present invention, in the scenario where the user selects the normal mode to run the cooling or dehumidification function and the air conditioner is not in the constant temperature and dehumidification mode, the target electronic expansion valve is activated to make the air conditioner perform constant temperature dehumidification in the room, and the indoor environment is monitored in real time after the target electronic expansion valve is activated. Humidity information, when it is determined that the indoor humidity reaches the human comfort zone, the target electronic expansion valve is closed, and the operation mode of the air conditioner is switched back to the previous preset mode, which improves the user's comfort during the dehumidification process of the air conditioner, and reduces the operation of the air conditioner. power consumption to achieve the effect of energy saving and emission reduction.

In a specific embodiment, when the user turns on the air conditioner to run, when the constant temperature dehumidification mode is selected, the air conditioner switches to the constant temperature dehumidification mode to run, and at this time, the compressor of the air conditioner is turned on to run, and the constant temperature and dehumidification electronic expansion valve, that is, the target electronic The expansion valve is also opened at the same time, the target initial opening degree P=240 steps, and the opening degree range is 0-480 steps. The refrigerant passes through the condenser, throttling device, and evaporator, and returns to the compressor for a reciprocating cycle. The indoor evaporator absorbs heat to dehumidify the indoor air, and then the cold air passes through the capillary tube sent by the evaporator. Due to the high temperature in the capillary tube Gaseous refrigerant, the cold air absorbs heat and then heats up, and the heated air is blown into the room, so as to achieve the same inlet air temperature and outlet air temperature;

Further, the temperature information T1 of the air inlet and the temperature information T2 of the air outlet of the indoor unit are detected, and whether the constant temperature dehumidification state is realized is determined through the temperatures of T1 and T2. When T1-T2 > 0.5°C, the target initial opening of the control target electronic expansion valve increases, and the adjustment rate, that is, the first target rate, is increased by 1 opening/1 second; when T1-T2 <-0.5°C, then Adjust the target initial opening of the target electronic expansion valve to decrease, and the adjustment rate, that is, the second target rate, is reduced by 1 opening/1 second; when 0.5°C≥T1-T2≥-0.5°C, maintain the target electronic expansion valve. The initial opening of the target remains unchanged;

When the user chooses the normal mode to run the cooling or dehumidification function (the heating mode is that the outdoor condensate water frost cannot achieve constant temperature dehumidification), the air conditioner operates according to the normal logic, and real-time detection of indoor temperature and humidity data according to the temperature sensor and humidity sensor . After the air conditioner runs for a period of time, when the detected indoor temperature information is lower than 26°C, the operation is adjusted according to the value of the indoor humidity. When the indoor humidity information is higher than 70%, it is determined that the indoor temperature is suitable but the humidity If it is too large, it is easy to cause discomfort to the user. At this time, the target electronic expansion valve is opened, and the target initial opening is P=240 steps, which is used to realize the functions of the air conditioner to dehumidify and cool a small amount of indoor air. At the same time, according to the air inlet temperature information T1 and outlet The tuyere temperature information T2 changes the opening degree adjustment of the target electronic expansion valve. When T1-T2>10°C, the target initial opening of the control target electronic expansion valve increases, and the adjustment rate, that is, the first target rate, is increased by 1 opening/1 second; when T1-T2<8°C, the control The target initial opening of the target electronic expansion valve decreases, and the adjustment rate, that is, the second target rate, is reduced by 1 opening/1 second; when 10°C≥T1-T2≥8°C, the target initial target electronic expansion valve is maintained. The opening remains unchanged;

When it is detected that the indoor humidity information is less than 55%, the target electronic expansion valve is closed, and the air conditioner continues to operate according to the normal logic. At this time, the indoor temperature and humidity are both low, and the air conditioner compressor normally operates at a low frequency. This solution is suitable for inverter air conditioners. Common to air conditioners and fixed frequency air conditioners.

The air conditioner constant temperature and dehumidification control system provided by the present invention is described below, and the air conditioner constant temperature and dehumidification control system described below and the air conditioner constant temperature dehumidification control method described above can be referred to each other correspondingly.

Fig. 3 is the structural schematic diagram of the constant temperature dehumidification control system of the air conditioner provided by the present invention, as shown in Fig. 3, including:

The opening module 310 is used for opening the target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to the target initial opening degree;

an acquisition module 320, configured to acquire air inlet temperature information and air outlet temperature information of the indoor unit;

A regulation module 330, configured to regulate the target initial opening of the target electronic expansion valve according to the difference between the air inlet temperature information and the air outlet temperature information; the target electronic expansion valve is used to regulate the The flow rate of the gaseous refrigerant in the capillary tube of the indoor unit is used to control the difference between the temperature information of the air inlet and the temperature information of the air outlet within a target range.

The air conditioner constant temperature and dehumidification control system described in this embodiment can be used to execute the above embodiments of the air conditioner constant temperature and dehumidification control method, and the principles and technical effects thereof are similar, and will not be repeated here.

In the air conditioner constant temperature dehumidification control system of the embodiment of the present invention, by adding a target electronic expansion valve, the target electronic expansion valve can control the flow rate of the high-temperature gaseous refrigerant in the capillary tube of the indoor unit. When the user turns on the constant temperature dehumidification function of the air conditioner, the target electronic expansion valve is turned on. Adjust the opening degree of the target electronic expansion valve as the target initial opening degree; then by obtaining the air inlet temperature information and air outlet temperature information of the indoor unit, calculate the difference between the air inlet temperature information and the air outlet temperature information, based on the air inlet temperature information and the air outlet temperature information. The difference between the temperature information of the air outlet and the temperature information of the air outlet can be used to effectively control the target initial opening of the target electronic expansion valve, which can effectively control the heat released by the flow of high-temperature gaseous refrigerant in the capillary tube, and accurately control the air flow after dehumidification. The temperature compensation ensures that the air inlet temperature of the indoor unit is always consistent with the air outlet temperature, achieving high-quality indoor constant temperature dehumidification effect, and the technical process is simple to achieve.

The invention provides a constant temperature dehumidifying air conditioner, including an indoor unit and an outdoor unit, the outdoor unit includes a condenser, an air conditioner compressor, a control device and a target electronic expansion valve, the indoor unit includes an evaporator, a capillary, a temperature sensor and a humidity sensor, and the target The electronic expansion valve is arranged on the communication pipeline between the air-conditioning compressor air outlet and the capillary air inlet, and the air-conditioning compressor, the target electronic expansion valve, the temperature sensor and the humidity sensor are respectively electrically connected to the control device;

The control device includes a processor, a memory and a computer program stored in the memory and running on the processor. When the processor executes the program, the processor can execute the air conditioner constant temperature and dehumidification control method provided by the above methods. The method includes: opening a target Electronic expansion valve, adjust the opening degree of the target electronic expansion valve as the target initial opening degree; obtain the air inlet temperature information and air outlet temperature information of the indoor unit; according to the difference between the air inlet temperature information and the air outlet temperature information The target electronic expansion valve is used to adjust the target initial opening degree of the target electronic expansion valve; the target electronic expansion valve is used to adjust the flow rate of the gaseous refrigerant in the capillary tube of the indoor unit, so as to control the temperature information of the air inlet and the outlet temperature information. The difference of the tuyere temperature information is within the target range.

In another aspect, the present invention also provides a computer program product, the computer program product includes a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can Execute the air conditioner constant temperature and dehumidification control method provided by the above methods, the method includes: opening a target electronic expansion valve, adjusting the opening degree of the target electronic expansion valve to the target initial opening degree; Air outlet temperature information; according to the difference between the air inlet temperature information and the air outlet temperature information, the target initial opening of the target electronic expansion valve is regulated; the target electronic expansion valve is used to adjust the indoor unit The flow rate of the gaseous refrigerant in the capillary tube is controlled to control the difference between the temperature information of the air inlet and the temperature information of the air outlet within the target range.

In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored, and the computer program is implemented when executed by a processor to execute the air conditioner constant temperature and dehumidification control method provided by the above methods, the The method includes: opening a target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve as a target initial opening degree; acquiring air inlet temperature information and air outlet temperature information of an indoor unit; The difference value of the air outlet temperature information is used to regulate and control the target initial opening of the target electronic expansion valve; the target electronic expansion valve is used to adjust the flow rate of the gaseous refrigerant in the capillary tube of the indoor unit to control the air inlet temperature. The difference between the information and the air outlet temperature information is within the target range.

The device embodiments described above are only illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed over multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment. Those of ordinary skill in the art can understand and implement it without creative effort.

From the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on this understanding, the above-mentioned technical solutions can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic A disc, an optical disc, etc., includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. an air conditioner constant temperature dehumidification control method, is characterized in that, comprises: Open the target electronic expansion valve, and adjust the opening degree of the target electronic expansion valve to be the target initial opening degree; Obtain the air inlet temperature information and air outlet temperature information of the indoor unit; According to the difference between the air inlet temperature information and the air outlet temperature information, the target initial opening of the target electronic expansion valve is regulated; the target electronic expansion valve is used to regulate the gaseous state in the capillary tube of the indoor unit The flow rate of the refrigerant is controlled to control the difference between the temperature information of the air inlet and the temperature information of the air outlet within the target range. 2 . The method for controlling constant temperature and dehumidification of an air conditioner according to claim 1 , wherein, according to the difference between the temperature information of the air inlet and the temperature information of the air outlet, the target initial opening degree of the target electronic expansion valve is determined. 3 . control, including: When it is determined that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information is greater than the first threshold, according to the first target rate, on the basis of the target initial opening degree , increasing the opening of the target electronic expansion valve; or, When it is determined that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information is less than the second threshold, according to the second target rate, on the basis of the target initial opening degree , reducing the opening of the target electronic expansion valve; or, In the case of judging that the air conditioner is in the constant temperature dehumidification mode, and the difference between the air inlet temperature information and the air outlet temperature information satisfies the first target threshold range, keep the opening degree of the target electronic expansion valve as the target initial value; The first target threshold range is determined based on the first threshold and the second threshold. 3. The method for controlling constant temperature and dehumidification of an air conditioner according to claim 1, characterized in that, opening the target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be a target initial opening degree, comprising: In the case of judging that the air conditioner is not running in the constant temperature dehumidification mode, keep the current preset mode running, and obtain indoor temperature information and indoor humidity information; When the indoor temperature information is lower than the target temperature threshold and the indoor humidity information is higher than the first humidity threshold, the target electronic expansion valve is opened, and the opening degree of the target electronic expansion valve is adjusted to be the target initial opening Spend. 4 . The method for controlling constant temperature and dehumidification of an air conditioner according to claim 3 , wherein, according to the difference between the temperature information of the air inlet and the temperature information of the air outlet, the target initial opening degree of the target electronic expansion valve is determined. 5 . control, including: When the difference between the air inlet temperature information and the air outlet temperature information is greater than a third threshold, according to the first target rate, on the basis of the target initial opening degree, increase the target electronic expansion valve opening; or, When the difference between the air inlet temperature information and the air outlet temperature information is less than a fourth threshold, reduce the target electronic expansion valve on the basis of the target initial opening according to the second target rate opening; or, In the case that the difference between the air inlet temperature information and the air outlet temperature information satisfies the second target threshold range, keep the opening degree of the target electronic expansion valve as the target initial opening degree; the second target threshold value range Determined based on the third threshold and the fourth threshold. 5 . The method for controlling constant temperature and dehumidification of an air conditioner according to claim 4 , wherein after adjusting the target initial opening of the target electronic expansion valve, the method further comprises: 6 . In the case of detecting that the indoor humidity information is less than a second humidity threshold, closing the target electronic expansion valve; Switch the operation mode of the air conditioner back to the preset mode. 6 . The method for controlling constant temperature and dehumidification of an air conditioner according to claim 1 , wherein the opening degree of the target electronic expansion valve ranges from 0 to 480 steps. 7 . 7. A constant temperature dehumidification control system for an air conditioner, comprising: an opening module for opening the target electronic expansion valve, and adjusting the opening degree of the target electronic expansion valve to be the target initial opening degree; The acquisition module is used to acquire the air inlet temperature information and air outlet temperature information of the indoor unit; a regulation module, configured to regulate the target initial opening of the target electronic expansion valve according to the difference between the air inlet temperature information and the air outlet temperature information; the target electronic expansion valve is used to regulate the indoor The flow rate of the gaseous refrigerant in the capillary tube of the machine is controlled to control the difference between the temperature information of the air inlet and the temperature information of the air outlet within the target range. 8. A constant temperature dehumidifying air conditioner, characterized by comprising an indoor unit and an outdoor unit, the outdoor unit comprising a condenser, an air conditioner compressor, a control device and a target electronic expansion valve, the indoor unit comprising an evaporator, a capillary, A temperature sensor and a humidity sensor, the target electronic expansion valve is arranged on the communication pipe between the air-conditioning compressor exhaust port and the capillary air inlet, the air-conditioning compressor, the target electronic expansion valve, the The temperature sensor and the humidity sensor are respectively electrically connected to the control device; The control device includes a processor, a memory, and a computer program stored on the memory and executable on the processor, and when the processor executes the program, the implementation of any one of claims 1 to 6 Air conditioner constant temperature dehumidification control method. 9. A non-transitory computer-readable storage medium on which a computer program is stored, wherein the computer program realizes the constant temperature and dehumidification control of the air conditioner according to any one of claims 1 to 6 when the computer program is executed by a processor method. 10. A computer program product, comprising a computer program, characterized in that, when the computer program is executed by a processor, the method for controlling the constant temperature and dehumidification of an air conditioner according to any one of claims 1 to 6 is implemented.

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