CN110567127A - air conditioner frequency control method and air conditioner - Google Patents
air conditioner frequency control method and air conditioner Download PDFInfo
- Publication number
- CN110567127A CN110567127A CN201910900091.7A CN201910900091A CN110567127A CN 110567127 A CN110567127 A CN 110567127A CN 201910900091 A CN201910900091 A CN 201910900091A CN 110567127 A CN110567127 A CN 110567127A
- Authority
- CN
- China
- Prior art keywords
- frequency
- compressor
- temperature
- correction coefficient
- fmax
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001276 controlling effect Effects 0.000 claims description 19
- 238000004378 air conditioning Methods 0.000 claims description 11
- 230000002596 correlated effect Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 21
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 description 13
- 230000009467 reduction Effects 0.000 description 9
- 230000003321 amplification Effects 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 8
- 230000005494 condensation Effects 0.000 description 8
- 238000009833 condensation Methods 0.000 description 8
- 238000003199 nucleic acid amplification method Methods 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner frequency control method and an air conditioner, and relates to the technical field of air conditioners. Compared with the prior art, the invention can determine the upper limit of the operation of the frequency of the compressor according to the difference value between the indoor temperature and the set temperature, namely, the actual refrigerating/heating load, and can save energy consumption as much as possible while meeting the requirement of refrigerating capacity/heat.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner frequency control method and an air conditioner.
Background
The variable frequency air conditioner can adjust the running frequency of the compressor along with the change of cold and hot loads, thereby controlling the output of the refrigerating (heating) capacity of the air conditioner. Compared with a fixed-frequency air conditioner, the air conditioner has the advantages of energy conservation and good refrigerating and heating effects, and is more popular in the market.
After the frequency converter receives a starting command, the frequency converter performs refrigeration and heating starting according to a control logic requirement, after the compressor is started, a compressor frequency operation platform is set for ensuring the stable operation of the compressor, after a starting condition is met, the compressor is started, and the compressor is gradually increased according to a logic requirement gradient. Meanwhile, the highest frequency operation is continued for a long time, so that the operation comfort level is not high, and the experience is influenced.
Disclosure of Invention
The invention solves the problem of how to optimize the frequency control of the compressor, thereby reducing the comprehensive energy consumption of the air conditioner, meeting the requirements of energy conservation and environmental protection, avoiding the air conditioner from continuously running at the highest frequency for a long time and improving the comfort level of air outlet.
in order to solve the problems, the invention is realized by adopting the following technical scheme.
in one aspect, the present invention provides an air conditioner frequency control method, including the steps of:
Obtaining indoor temperature Tai;
Setting a limited frequency Fmax according to a first difference value delta T1 between the indoor temperature Tai and the set temperature Ts;
Controlling the compressor to operate at or below a defined frequency Fmax;
Wherein the defined frequency is less than or equal to the rated frequency Fe of the compressor.
according to the control method of the air conditioner frequency, the compressor is controlled to operate within the limited frequency Fmax, so that the air conditioner is prevented from operating at the highest frequency under any condition. Compared with the prior art, the invention can determine the upper limit of the operation of the frequency of the compressor according to the difference value between the indoor temperature and the set temperature, namely, the actual refrigerating/heating load, and can save energy consumption as much as possible while meeting the requirement of refrigerating capacity/heat.
further, the step of setting the defined frequency Fmax comprises:
Setting a first correction coefficient Fa according to a first difference value delta T1 between the indoor temperature Tai and the set temperature Ts, wherein the first correction coefficient Fa is less than or equal to 1 and is positively correlated with the first difference value delta T1;
And setting a limited frequency Fmax according to the first correction coefficient Fa.
According to the control method of the air conditioning frequency, the first correction coefficient Fa is set, and the first correction coefficient Fa is positively correlated with the first difference value delta T1, so that the limited frequency Fmax of the compressor is set, and therefore when the first difference value delta T1 is large, namely the cooling/heating load is large, Fa is closer to 1 in the setting way, so that the high upper limit frequency can be set, and the load requirement is met; when the first difference value Δ T1 is small, that is, the cooling/heating load is small, Fa is set smaller, so that the lower upper limit frequency can be set, and further, the power consumption can be reduced and the energy can be saved.
Further, the limit frequency Fmax is set according to the following formula:
Fmax＝Fe×Fa。
Further, the first correction coefficient Fa is greater than or equal to 0.3.
Further, the step of controlling the compressor to operate at or below a defined frequency Fmax comprises:
Acquiring the temperature Tem of the inner disc;
Setting a second correction coefficient Fb according to a second difference value delta T2 between the inner disc temperature Tem and the target preset temperature Tm, wherein the second correction coefficient Fb is less than 1;
Setting a calculation target frequency Ft according to the second correction coefficient Fbn；
When calculating the target frequency FtnWhen the frequency is less than the limit frequency Fmax, the compressor is controlled to calculate the target frequency FtnRunning;
when calculating the target frequencyFtnAnd when the frequency is greater than or equal to the defined frequency Fmax, controlling the compressor to operate at the defined frequency Fmax.
The air conditioner frequency control method sets the calculation target frequency Ft through the second correction coefficient FbnAnd will calculate the target frequency Ft in real timenComparing the set upper limit frequency, and calculating the target frequency Ftnwhen the frequency is less than the limited frequency Fmax, which indicates that the compressor has not been increased to the limited frequency at the moment, the compressor calculates the target frequency Ftnoperation when calculating the target frequency FtnWhen the frequency is greater than or equal to the limit frequency Fmax, the pre-frequency-increasing target frequency of the compressor reaches or exceeds the limit frequency Fmax at the moment, and in order to avoid high power consumption, the frequency of the compressor is limited to operate at the limit frequency Fmax at the moment, so that the compressor can not exceed the limit frequency Fmax all the time during frequency increasing, and the comprehensive power consumption of the air conditioner is reduced.
Further, a target frequency Ft is calculatednSet according to the following formula:
Ftn＝Ftn-1×(1±Fb)；
Wherein, Ftn-1N is 1 or more for the calculation target frequency set last time.
Further, before the step of setting the calculation target frequency Ftn according to the second correction coefficient Fb, the method includes:
Acquiring an outdoor temperature Tw;
Setting a third correction coefficient Ka according to the outdoor temperature Tw, wherein the third correction coefficient Ka is less than or equal to 1;
Setting an initial frequency Ft according to a third correction coefficient Ka0；
Controlling the compressor to operate to an initial frequency Ft0。
the air conditioner frequency control method provided by the invention sets the initial frequency Ft through the outdoor temperature Tw0and at an initial frequency Ft0Is determined on the basis of the up-conversion or down-conversion scheme so that the initial frequency Ft0More reasonable and operate the compressor to the initial frequency Ft0so that the operation parameters of the compressor tend to be stable and each operation can be conveniently carried out subsequentlyA frequency control action.
Further, the initial frequency Ft0Set according to the following formula:
Ft0＝Fe×Ka
wherein Fe is the rated power of the compressor.
Further, the second correction coefficient Fb is less than or equal to 10%.
In another aspect, the present invention provides an air conditioner including a compressor and a controller electrically connected to the compressor;
The controller is used for acquiring the indoor temperature Tai and setting a limited frequency Fmax according to a first difference value delta T1 between the indoor temperature Tai and a set temperature Ts;
The controller is also used for controlling the compressor to operate less than or equal to a defined frequency Fmax.
The air conditioner provided by the invention can determine the upper limit of the operation of the frequency of the compressor according to the difference value between the indoor temperature and the set temperature, namely, the actual refrigerating/heating load, and can meet the requirement of refrigerating capacity/heat and simultaneously save energy consumption as much as possible.
Drawings
Fig. 1 is an overall step block diagram of an air conditioning frequency control method according to a first embodiment of the present invention;
Fig. 2 is an exploded block diagram of step S3 in fig. 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
first embodiment
Referring to fig. 1 and fig. 2 in combination, the present embodiment provides an air conditioner frequency control method, which is used for controlling the frequency of a compressor in an air conditioner, so as to implement the functions of energy saving, environmental protection, and comfortable air outlet. The air conditioner comprises an air conditioner body, a compressor arranged in the air conditioner body and a controller electrically connected with the compressor.
The air conditioner frequency control method provided by the embodiment comprises the following steps:
S1: the indoor temperature Tai is obtained.
specifically, after the compressor is started, the target temperature is manually or automatically set, the indoor temperature Tai is detected by a first temperature detector provided in the room, and the generated temperature signal is transmitted to the controller. The controller obtains an indoor temperature signal and then compares the indoor temperature signal with a set temperature Ts.
In the embodiment, the target temperature is set through the remote controller, the remote controller is in communication connection with the controller, and the control principle of the remote controller is consistent with that of the existing air conditioner remote controller. Of course, the target temperature may be set by other devices communicatively connected to the controller, for example, a mobile phone or a control panel, and is not limited in particular.
It should be noted that, here, the indoor temperature Tai is subject to the temperature of the wired controller when the wired controller is connected, and is subject to the return air temperature of the unit when the wireless controller is connected.
S2: the limiting frequency Fmax is set according to a first difference value Δ T1 between the indoor temperature Tai and the set temperature Ts.
The invention can determine the upper limit of the operation of the frequency of the compressor according to the difference value between the indoor temperature and the set temperature, namely, the actual refrigerating/heating load, and can meet the requirement of refrigerating capacity/heat and save the energy consumption as much as possible.
Specifically, the step of setting the limit frequency Fmax is: setting a first correction coefficient Fa according to a first difference value delta T1 between the indoor temperature Tai and the set temperature Ts, wherein the first correction coefficient Fa is less than or equal to 1 and is positively correlated with the first difference value delta T1; and setting a limited frequency Fmax according to the first correction coefficient Fa.
In the present embodiment, the limit frequency Fmax is set according to the following formula:
Fmax＝Fe×Fa。
Where Fe is the rated power of the compressor, i.e. the highest frequency programmed to allow the compressor to operate, the compressor may be damaged when operating above the rated power Fe. The defined frequency Fmax is less than or equal to the rated power Fe.
in this embodiment, the first correction coefficient Fa is greater than or equal to 0.3, and the value of the first correction coefficient Fa conforms to the following table:
TABLE 1-1
Of course, the value of the first correction factor Fa is not limited to the values listed in table 1-1, and may be set according to actual requirements, wherein when the difference between the indoor temperature and the set temperature is particularly large, for example, when the temperature in the table exceeds 10 ℃, the required cooling/heating amount is particularly large, the first correction factor Fa may be set to 1, and the compressor is controlled to output full load at the upper limit after increasing the frequency, so as to achieve the purpose of cooling/heating as soon as possible.
It should be noted that, in this embodiment, the first difference Δ T1 refers to an absolute value of a difference between the indoor temperature Tai and the set temperature Ts, and when Δ T1 is larger, it indicates that the cooling/heating requirement is larger, and at this time Fa is closer to 1 in the setting, so that a higher upper limit frequency can be set, thereby satisfying the cooling/heating requirement; when the first difference value Δ T1 is small, that is, the cooling/heating load is small, Fa is set smaller, so that the lower upper limit frequency can be set, and further, the power consumption can be reduced and the energy can be saved.
Specifically, in the cooling mode, the indoor temperature is high, and the set temperature should be lower than the indoor temperature in the normal case, so Δ T1 is equal to Tai-Ts, and the first correction coefficient Fa is set according to Δ T1, and the upper limit frequency Fmax is set according to the first correction coefficient. In the heating mode, the indoor temperature is low, and the set temperature is normally higher than the indoor temperature, so that Δ T1 is Ts-Tai, and the first correction coefficient Fa is set according to Δ T1, and the upper limit frequency Fmax is set according to the first correction coefficient.
S3: and controlling the compressor to operate at or below the defined frequency Fmax.
In this embodiment, the compressor is gradually ramped up from start to steady under the control of the controller. Specifically, after the compressor is started, after the target temperature is manually or automatically set, the compressor is started for 30s, the frequency of the compressor is firstly operated to 30Hz, and after 30s, the compressor is gradually operated to the initial calculation frequency set by the controller.
In this embodiment, the step S3 of controlling the compressor to be less than or equal to the defined frequency Fmax includes:
s31; the inner disc temperature Tem is obtained.
Specifically, the inner panel temperature Tem is detected by a second temperature detector provided inside the air conditioner body, and the generated temperature signal is transmitted to the controller. And the controller acquires the indoor temperature signal and then compares the indoor temperature signal with the target preset temperature Tm.
Here, the target preset temperature Tm is preset in the program, and the target preset temperature Tm is a constant value for a specific machine type.
S32: and setting a second correction coefficient Fb according to a second difference value delta T2 between the inner disc temperature Tem and the target preset temperature Tm.
In this embodiment, the second correction factor Fb actually represents the frequency increase of the compressor, and the second correction factor Fb is smaller than 1. Specifically, the second correction coefficient Fb is less than or equal to 0.1, and the value of the second correction coefficient Fb conforms to the following table:
tables 1 to 2
Of course, the value of the second correction coefficient Fb is not limited to the values listed in table 1-1, and may be set according to actual requirements and actual models, wherein when the difference between the inner disc temperature and the target temperature is particularly large, for example, when the temperature in the upper table exceeds 8 ℃, which means that the inner disc temperature is farther from the target preset temperature, the increase of the compressor frequency increase or frequency decrease may be appropriately increased, so as to make the inner disc temperature reach the target temperature as soon as possible.
It should be noted that the second difference Δ T2 in the present embodiment refers to an absolute value of a difference between the inner disc temperature Tem and the target preset temperature Tm. Specifically, at 2 represents the temperature difference of evaporation during cooling, and Δ T2 is Tm — Tem, and Δ T2 is absolute. At the time of heating, Δ T2 represents a condensation temperature difference, Δ T2 ═ Tem-Tm, and Δ T2 takes an absolute value.
S33: according to the firstTwo correction coefficients Fb for setting the calculation target frequency Ftn。
specifically, the target frequency Ft is calculatednSet according to the following formula:
Ftn＝Ftn-1×(1±Fb)。
Wherein, Ftn-1for the calculation target frequency set last time, n is 1 or more, and when n is 1, that is, the calculation target frequency is obtained for the first time, Ft1＝Ft0。
In the cooling mode, the target preset temperature Tm is the target evaporation temperature, Δ T2 is Tm-Tem, the target evaporation temperature may be higher than or lower than the inner disc temperature, and Ft is set to be higher than the inner disc temperature Temn＝Ftn-1And x (1-Fb) represents that the frequency reduction operation is required, wherein the second correction coefficient Fb represents the amplitude reduction, the amplitude reduction of the frequency of the compressor each time is Fb, the temperature Tem of the inner disc needs to be measured in real time, and the second correction coefficient Fb is set in real time according to the temperature Tem of the inner disc until the amplitude reduction Fb is reduced to 0. Ft when the target evaporation temperature is less than the inner disc temperature Temn＝Ftn-1and x (1+ Fb) represents that the frequency increasing operation is required, wherein the second correction coefficient represents the amplification, the amplification of the frequency of the compressor is Fb each time, the temperature Tem of the inner disc needs to be measured in real time, and the second correction coefficient Fb is set in real time according to the temperature Tem of the inner disc until the amplification Fb is reduced to 0.
During heating, the target preset temperature Tm is a target condensation temperature, the inner disc temperature Tem represents an actual condensation temperature, Δ T2 ═ Tem-Tm, the inner disc temperature Tem may be higher than the target condensation temperature or lower than the target condensation temperature, and when the inner disc temperature Tem is higher than the target condensation temperature, Ft isn＝Ftn-1And x (1-Fb), identifying that the frequency reduction operation is required, wherein the second correction coefficient Fb represents the amplitude reduction, the amplitude reduction of the frequency of the compressor each time is Fb, the temperature Tem of the inner disc needs to be measured in real time, and the second correction coefficient Fb is set in real time according to the temperature Tem of the inner disc until the amplitude reduction Fb is reduced to 0. Ft when the inner tray temperature Tem is less than the target condensing temperaturen＝Ftn-1X (1+ Fb) indicates that the frequency up operation is required, at which time the second modification is performedThe positive coefficient represents the amplification, the amplification of the frequency of the compressor is Fb each time, the temperature Tem of the inner disc needs to be measured in real time, and the second correction coefficient Fb is set in real time according to the temperature Tem of the inner disc until the amplification Fb is reduced to 0.
It should be noted that, here, calculating and controlling the frequency of the compressor through the target evaporation temperature and the inner disc temperature during cooling and calculating and controlling the frequency of the compressor through the target condensation temperature and the inner disc temperature during heating are all conventional frequency control methods in the prior art, and specifically, reference may be made to the temperature control principle of the existing inverter air conditioner.
When calculating the target frequency FtnWhen the frequency is less than the limit frequency Fmax, step S34 is executed to control the compressor to calculate the target frequency FtnRunning;
when calculating the target frequency FtnAnd when the frequency is greater than or equal to the limit frequency Fmax, executing step S35: the compressor is controlled to operate at a defined frequency Fmax.
Setting the calculation target frequency Ft by the second correction coefficient Fbnand will calculate the target frequency Ft in real timenComparing the set upper limit frequency, and calculating the target frequency FtnWhen the frequency is less than the limited frequency Fmax, which indicates that the compressor has not been increased to the limited frequency at the moment, the compressor calculates the target frequency Ftnoperation when calculating the target frequency FtnWhen the frequency is greater than or equal to the limit frequency Fmax, the pre-frequency-increasing target frequency of the compressor reaches or exceeds the limit frequency Fmax at the moment, and in order to avoid high power consumption, the frequency of the compressor is limited to operate at the limit frequency Fmax at the moment, so that the compressor can not exceed the limit frequency Fmax all the time during frequency increasing, and the comprehensive power consumption of the air conditioner is reduced.
in the present embodiment, the initial frequency Ft is set before the step S35 of calculating the target frequency Ftn according to the second correction factor Fb0obtained by the following steps:
obtaining the outdoor temperature Tw, setting a third correction coefficient Ka according to the outdoor temperature Tw, and setting an initial frequency Ft according to the third correction coefficient Ka0(ii) a Controlling the compressor to operate to the initial frequency Ft by the controller0。
It should be noted that the initial frequency Ft here0Set according to the following formula:
Ft0＝Fe×Ka。
Specifically, the outdoor temperature is detected by a third temperature detector disposed outdoors, and the generated temperature signal is transmitted to the controller. After the controller acquires the outdoor temperature signal, the third correction coefficient Ka is set according to the value of the outdoor temperature Tw, and the initial frequency Ft is set according to the third correction coefficient Ka0finally, the frequency of the compressor is increased to the initial frequency Ft by the controller0Gradually increasing or decreasing the frequency after the compressor is stabilized.
Wherein the third correction coefficient Ka is less than or equal to 1, and the third correction coefficient Ka is directly related to the outer ring temperature, when the temperature is in a certain temperature range, the third correction coefficient is 1, and is greater than the range, the third correction coefficient is maintained at 1, and when the third correction coefficient is less than the coefficient, the third correction coefficient is reduced. The specific temperature range can be selected differently according to different situations. Specifically, at the time of cooling, when the outdoor temperature Tw is greater than 43 ℃, the third correction coefficient may be set to 1, and when less than or equal to 43 degrees, the value of the third correction coefficient may be sequentially decreased according to the actual temperature.
in the present embodiment, the initial frequency Ft is set by the outdoor temperature Tw0And at an initial frequency Ft0Is determined on the basis of the up-conversion or down-conversion scheme so that the initial frequency Ft0More reasonable and operate the compressor to the initial frequency Ft0Therefore, the running parameters of the compressor tend to be stable, and various subsequent frequency control actions are convenient to carry out.
In summary, in the air conditioner frequency control method provided in this embodiment, after the air conditioner is started for cooling or heating, the first correction coefficient Fa is set by detecting the difference between the indoor temperature and the set temperature, the limit frequency Fmax of the compressor at different stages is determined according to the first correction coefficient, after the compressor is started, the platform set by the program is operated first, the frequency of the compressor is calculated and controlled according to the target evaporation temperature and the inner panel temperature, and the frequency of the compressor is calculated and controlled according to the target condensation temperature and the inner panel temperaturethe mode of the system determines an up-conversion or down-conversion scheme, and determines the up-conversion and the amplification of the compressor according to the temperature range of the second difference value delta T2 during the up-conversion, and simultaneously compares and calculates the target frequency FtnWith a value defining the frequency Fmax when FtnWhen the frequency is less than Fmax, the compressor calculates the target frequency FtnIn operation, when FtnWhen the frequency is larger than or equal to Fmax, the compressor is installed to operate according to the frequency of the limited frequency Fmax, so that the compressor can be guaranteed to operate below the limited frequency Fmax comprehensively in the whole refrigeration or heating process, the compressor is prevented from operating at the highest frequency for a long time, energy consumption is reduced, discomfort caused by continuous high-frequency air outlet is avoided, and air outlet comfort is improved.
second embodiment
The present embodiment provides an air conditioner adapted to the air conditioning frequency control method according to the first embodiment.
The air conditioner provided by the embodiment comprises an air conditioner body, a compressor and a controller;
The controller is used for acquiring the indoor temperature Tai and setting a limited frequency Fmax according to a first difference value delta T1 between the indoor temperature Tai and a set temperature Ts;
The controller is also used for controlling the compressor to operate less than or equal to a defined frequency Fmax.
in this embodiment, the air conditioner further includes a first temperature detector, the first temperature detector is disposed at an air return inlet of the air conditioner body and electrically connected to the controller, and is configured to detect an indoor temperature Tai and transmit a generated temperature signal to the controller, the controller obtains the indoor temperature signal and then compares the indoor temperature signal with a set temperature Ts to obtain a first difference Δ T1, and sets a limit frequency Fmax according to the first difference Δ T1.
in the running process of the compressor, the controller controls the frequency of the compressor, the frequency increasing or frequency reducing of the compressor is realized according to a preset mode, and meanwhile, the compressor is controlled to run always less than or equal to a limited frequency Fmax.
Further, the air conditioner further comprises a second temperature detector and a third temperature detector, the second temperature detector is arranged inside the air conditioner body and electrically connected with the controller and used for detecting the inner disc temperature Tem of the air conditioner and transmitting the generated temperature signal to the controller, the controller compares the obtained inner disc temperature with the target preset temperature Tm to obtain a second difference value delta T1, and the amplification or the reduction of the compressor is set according to the first difference value delta T1.
the third temperature detector is arranged outdoors and electrically connected with the controller and is used for detecting the outdoor temperature Tw and transmitting the generated temperature signal to the controller, and after the controller acquires the outdoor temperature signal, the third correction coefficient Ka is set according to the outdoor temperature Tw and the initial frequency Ft is set according to the third correction coefficient Ka0And the frequency increasing or reducing scheme is convenient to set.
The air conditioner provided by the invention can determine the upper limit of the operation of the frequency of the compressor according to the difference value between the indoor temperature and the set temperature, namely, the actual refrigerating/heating load, and can meet the requirement of refrigerating capacity/heat and simultaneously save energy consumption as much as possible.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. an air conditioner frequency control method is characterized by comprising the following steps:
Obtaining indoor temperature Tai;
Setting a limited frequency Fmax according to a first difference value delta T1 between the indoor temperature Tai and a set temperature Ts, wherein the limited frequency is less than or equal to a rated frequency Fe of the compressor;
and controlling the compressor to operate at or below the limit frequency Fmax.
2. the air conditioning frequency control method according to claim 1, wherein the step of setting the limit frequency Fmax comprises:
Setting a first correction coefficient Fa according to a first difference value delta T1 between the indoor temperature Tai and a set temperature Ts, wherein the first correction coefficient Fa is less than or equal to 1 and is positively correlated with the first difference value delta T1;
And setting a limited frequency Fmax according to the first correction coefficient Fa.
3. The air conditioning frequency control method according to claim 2, wherein the limit frequency Fmax is set according to the following formula:
Fmax＝Fe×Fa。
4. The air conditioning frequency control method according to claim 2, wherein the first correction coefficient Fa is greater than or equal to 0.3.
5. The air conditioning frequency control method according to any one of claims 1 to 4, wherein the step of controlling the compressor to operate at or below the limit frequency Fmax comprises:
acquiring the temperature Tem of the inner disc;
setting a second correction coefficient Fb according to a second difference value delta T2 between the inner disc temperature Tem and the target preset temperature Tm, wherein the second correction coefficient Fb is less than 1;
Setting a calculation target frequency Ft according to the second correction coefficient Fbn；
when the calculated target frequency FtnWhen the frequency is less than the limit frequency Fmax, controlling the compressor to calculate the target frequency FtnRunning;
When the calculated target frequency FtnAnd when the frequency is greater than or equal to the limit frequency Fmax, controlling the compressor to operate at the limit frequency Fmax.
6. The air conditioning frequency control method according to claim 5, wherein the calculation target frequency FtnSet according to the following formula:
Ftn＝Ftn-1×(1±Fb)
wherein, Ftn-1N is 1 or more for the calculation target frequency set last time.
7. The air conditioning frequency control method according to claim 6, wherein a calculation target frequency Ft is set according to the second correction coefficient Fbnbefore the step (2), the method comprises the following steps:
Acquiring an outdoor temperature Tw;
setting a third correction coefficient Ka according to the outdoor temperature Tw, wherein the third correction coefficient Ka is less than or equal to 1;
Setting an initial frequency Ft according to the third correction coefficient Ka0；
Controlling the compressor to operate to the initial frequency Ft0。
8. The air conditioning frequency control method according to claim 7, wherein the initial frequency Ft is a frequency of the air conditioner0Set according to the following formula:
Ft0＝Fe×Ka
Wherein Fe is the rated power of the compressor.
9. The air conditioning frequency control method according to claim 5, wherein the second correction coefficient Fb is less than or equal to 0.1.
10. An air conditioner is characterized by comprising a compressor and a controller electrically connected with the compressor;
the controller is used for acquiring the indoor temperature Tai and setting a limited frequency Fmax according to a first difference value delta T1 between the indoor temperature Tai and a set temperature Ts;
the controller is also used for controlling the compressor to operate less than or equal to the limited frequency Fmax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900091.7A CN110567127A (en) | 2019-09-23 | 2019-09-23 | air conditioner frequency control method and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910900091.7A CN110567127A (en) | 2019-09-23 | 2019-09-23 | air conditioner frequency control method and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110567127A true CN110567127A (en) | 2019-12-13 |
Family
ID=68781952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910900091.7A Pending CN110567127A (en) | 2019-09-23 | 2019-09-23 | air conditioner frequency control method and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110567127A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536661A (en) * | 2020-05-06 | 2020-08-14 | Tcl空调器(中山)有限公司 | Control method of multi-split air conditioning system, terminal equipment and readable storage medium |
| CN111649439A (en) * | 2020-05-08 | 2020-09-11 | 宁波奥克斯电气股份有限公司 | A kind of air conditioning control method |
| CN111735243A (en) * | 2020-06-28 | 2020-10-02 | 广东华天成新能源科技股份有限公司 | Compressor running frequency control method |
| CN111895582A (en) * | 2020-08-06 | 2020-11-06 | 广东Tcl智能暖通设备有限公司 | Compressor control method, device and air conditioning system |
| CN112283912A (en) * | 2020-09-28 | 2021-01-29 | 辉瑞(山东)环境科技有限公司 | Rapid temperature rise and fall system |
| CN112594770A (en) * | 2020-12-16 | 2021-04-02 | 浙江中广电器股份有限公司 | Variable-frequency waterless floor heating control method, controller, heating system and dual supply system |
| CN113250943A (en) * | 2021-04-20 | 2021-08-13 | 青岛海特生物医疗有限公司 | Method and device for controlling variable frequency compressor, variable frequency compressor and temperature control equipment |
| WO2021223513A1 (en) * | 2020-05-06 | 2021-11-11 | 青岛海尔空调电子有限公司 | Air conditioner and control method for compressor thereof |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299914A (en) * | 2008-06-10 | 2009-12-24 | Panasonic Corp | Multiroom air conditioner |
| CN101625545A (en) * | 2008-07-11 | 2010-01-13 | Tcl集团股份有限公司 | Method for controlling frequency of frequency converting air conditioner |
| CN101769584A (en) * | 2010-01-13 | 2010-07-07 | 宁波奥克斯空调有限公司 | Method for intelligently controlling frequency of variable-frequency air-conditioner |
| CN101968249A (en) * | 2010-09-09 | 2011-02-09 | 宁波奥克斯电气有限公司 | Method for regulating normal operating frequency of DC inverter compressor |
| CN102759174A (en) * | 2012-06-28 | 2012-10-31 | 宁波奥克斯电气有限公司 | Method for controlling self-inductance mode of variable-frequency air conditioner |
| JP2014211285A (en) * | 2013-04-19 | 2014-11-13 | ミサワホーム株式会社 | Indoor air conditioning system |
| CN104515254A (en) * | 2013-09-30 | 2015-04-15 | 海尔集团公司 | Air conditioning compressor frequency control method |
| CN104764150A (en) * | 2015-03-27 | 2015-07-08 | 武汉海尔电器股份有限公司 | Air conditioner control method |
| CN105444354A (en) * | 2015-12-07 | 2016-03-30 | 珠海格力电器股份有限公司 | Control method and system for air conditioner operation frequency |
| CN105485853A (en) * | 2015-12-29 | 2016-04-13 | 珠海格力电器股份有限公司 | Method and device for setting running frequency of air-conditioning compressor |
| CN105571084A (en) * | 2016-02-29 | 2016-05-11 | 广东美的制冷设备有限公司 | Water blowing prevention control method for air conditioner and air conditioner |
| CN106765883A (en) * | 2016-11-29 | 2017-05-31 | 奥克斯空调股份有限公司 | A kind of control method of frequency of variable-frequency air-conditioner |
| CN106871358A (en) * | 2017-02-28 | 2017-06-20 | 青岛海尔空调器有限总公司 | Temperature of outlet air of air conditioner control method and device |
| CN107178873A (en) * | 2017-05-26 | 2017-09-19 | 青岛海尔空调器有限总公司 | Transducer air conditioning and its control method |
| CN107747793A (en) * | 2017-10-16 | 2018-03-02 | 广东美的暖通设备有限公司 | Transducer air conditioning and its control method, device |
| CN108224704A (en) * | 2017-12-25 | 2018-06-29 | 青岛海尔空调电子有限公司 | The control method of air-conditioning |
| CN108361909A (en) * | 2018-02-11 | 2018-08-03 | 广东美的制冷设备有限公司 | Control method and control device, storage medium and mobile air-conditioner |
| CN109708246A (en) * | 2018-12-11 | 2019-05-03 | 宁波奥克斯电气股份有限公司 | A control method for high-frequency startup of an inverter air conditioner and the air conditioner |
| CN110173832A (en) * | 2019-05-22 | 2019-08-27 | 广东美的制冷设备有限公司 | The control method of window air conditioner |
-
2019
- 2019-09-23 CN CN201910900091.7A patent/CN110567127A/en active Pending
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009299914A (en) * | 2008-06-10 | 2009-12-24 | Panasonic Corp | Multiroom air conditioner |
| CN101625545A (en) * | 2008-07-11 | 2010-01-13 | Tcl集团股份有限公司 | Method for controlling frequency of frequency converting air conditioner |
| CN101769584A (en) * | 2010-01-13 | 2010-07-07 | 宁波奥克斯空调有限公司 | Method for intelligently controlling frequency of variable-frequency air-conditioner |
| CN101968249A (en) * | 2010-09-09 | 2011-02-09 | 宁波奥克斯电气有限公司 | Method for regulating normal operating frequency of DC inverter compressor |
| CN102759174A (en) * | 2012-06-28 | 2012-10-31 | 宁波奥克斯电气有限公司 | Method for controlling self-inductance mode of variable-frequency air conditioner |
| JP2014211285A (en) * | 2013-04-19 | 2014-11-13 | ミサワホーム株式会社 | Indoor air conditioning system |
| CN104515254A (en) * | 2013-09-30 | 2015-04-15 | 海尔集团公司 | Air conditioning compressor frequency control method |
| CN104764150A (en) * | 2015-03-27 | 2015-07-08 | 武汉海尔电器股份有限公司 | Air conditioner control method |
| CN105444354A (en) * | 2015-12-07 | 2016-03-30 | 珠海格力电器股份有限公司 | Control method and system for air conditioner operation frequency |
| CN105485853A (en) * | 2015-12-29 | 2016-04-13 | 珠海格力电器股份有限公司 | Method and device for setting running frequency of air-conditioning compressor |
| CN105571084A (en) * | 2016-02-29 | 2016-05-11 | 广东美的制冷设备有限公司 | Water blowing prevention control method for air conditioner and air conditioner |
| CN106765883A (en) * | 2016-11-29 | 2017-05-31 | 奥克斯空调股份有限公司 | A kind of control method of frequency of variable-frequency air-conditioner |
| CN106871358A (en) * | 2017-02-28 | 2017-06-20 | 青岛海尔空调器有限总公司 | Temperature of outlet air of air conditioner control method and device |
| CN107178873A (en) * | 2017-05-26 | 2017-09-19 | 青岛海尔空调器有限总公司 | Transducer air conditioning and its control method |
| CN107747793A (en) * | 2017-10-16 | 2018-03-02 | 广东美的暖通设备有限公司 | Transducer air conditioning and its control method, device |
| CN108224704A (en) * | 2017-12-25 | 2018-06-29 | 青岛海尔空调电子有限公司 | The control method of air-conditioning |
| CN108361909A (en) * | 2018-02-11 | 2018-08-03 | 广东美的制冷设备有限公司 | Control method and control device, storage medium and mobile air-conditioner |
| CN109708246A (en) * | 2018-12-11 | 2019-05-03 | 宁波奥克斯电气股份有限公司 | A control method for high-frequency startup of an inverter air conditioner and the air conditioner |
| CN110173832A (en) * | 2019-05-22 | 2019-08-27 | 广东美的制冷设备有限公司 | The control method of window air conditioner |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536661A (en) * | 2020-05-06 | 2020-08-14 | Tcl空调器(中山)有限公司 | Control method of multi-split air conditioning system, terminal equipment and readable storage medium |
| WO2021223513A1 (en) * | 2020-05-06 | 2021-11-11 | 青岛海尔空调电子有限公司 | Air conditioner and control method for compressor thereof |
| CN111649439A (en) * | 2020-05-08 | 2020-09-11 | 宁波奥克斯电气股份有限公司 | A kind of air conditioning control method |
| CN111649439B (en) * | 2020-05-08 | 2021-12-31 | 宁波奥克斯电气股份有限公司 | Air conditioner control method |
| CN111735243A (en) * | 2020-06-28 | 2020-10-02 | 广东华天成新能源科技股份有限公司 | Compressor running frequency control method |
| CN111735243B (en) * | 2020-06-28 | 2022-01-11 | 广东华天成新能源科技股份有限公司 | Compressor running frequency control method |
| CN111895582A (en) * | 2020-08-06 | 2020-11-06 | 广东Tcl智能暖通设备有限公司 | Compressor control method, device and air conditioning system |
| CN112283912A (en) * | 2020-09-28 | 2021-01-29 | 辉瑞(山东)环境科技有限公司 | Rapid temperature rise and fall system |
| CN112594770A (en) * | 2020-12-16 | 2021-04-02 | 浙江中广电器股份有限公司 | Variable-frequency waterless floor heating control method, controller, heating system and dual supply system |
| CN113250943A (en) * | 2021-04-20 | 2021-08-13 | 青岛海特生物医疗有限公司 | Method and device for controlling variable frequency compressor, variable frequency compressor and temperature control equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110567127A (en) | air conditioner frequency control method and air conditioner | |
| CN108375175B (en) | air conditioning system control method and device | |
| US11181287B2 (en) | Control method for heating operation of air-conditioner based on coil temperature and indoor fan speed | |
| CN101968249B (en) | Method for regulating normal operating frequency of DC inverter compressor | |
| CN106556099B (en) | The control method of the electric expansion valve of the indoor unit of multi-online air-conditioning system | |
| CN103836762B (en) | Variable frequency air conditioner and method and device for controlling variable frequency air conditioning system | |
| CN104633942B (en) | Frequency conversion air injection enthalpy increasing heat pump water heater frequency is adjusted and control method | |
| CN107101322B (en) | The convertible frequency air-conditioner group potential evaluation method of unified maximum reduction plans duration | |
| CN104613651B (en) | Frequency conversion air source hot pump water heater frequency adjustment method | |
| CN110440395B (en) | Control method, system and air conditioner for energy-saving operation of air conditioner | |
| CN104896665A (en) | Control method and device for air conditioner | |
| CN104501421B (en) | A kind of control method of frequency conversion two-stage compression heat pump water heater | |
| CN112880115B (en) | Control method of multi-unit air conditioning system | |
| CN110940064B (en) | Control method for operating frequency of air conditioner | |
| CN107178873A (en) | Transducer air conditioning and its control method | |
| CN106765890B (en) | Method for controlling air conditioner and air conditioner | |
| CN108626855B (en) | A kind of inverter air conditioning system energy saving comfort control method | |
| CN111765599A (en) | Optimization method of air conditioner control strategy, processor and memory | |
| CN114459133A (en) | Energy-saving control method and energy-saving control system for central air-conditioning system | |
| CN110940063A (en) | Target water temperature control method and device, storage medium and water multi-connected system | |
| CN112594884B (en) | Air conditioning unit and condenser fan control method and device thereof and storage medium | |
| WO2021175202A1 (en) | Heating control method for variable-frequency air conditioner, and variable-frequency air conditioner | |
| CN110397985B (en) | Air conditioner and control method thereof | |
| CN111735243B (en) | Compressor running frequency control method | |
| CN109983284B (en) | Air conditioning system based on variable frequency compressor and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |
|
| RJ01 | Rejection of invention patent application after publication |