CN111271848B - Control method of air conditioner and air conditioner thereof - Google Patents
Control method of air conditioner and air conditioner thereof Download PDFInfo
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- CN111271848B CN111271848B CN201910648060.7A CN201910648060A CN111271848B CN 111271848 B CN111271848 B CN 111271848B CN 201910648060 A CN201910648060 A CN 201910648060A CN 111271848 B CN111271848 B CN 111271848B
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- 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
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- 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
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- 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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention provides a control method of an air conditioner, which is used for controlling the air conditioner at a first sampling time point t1In the method, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the first outer coilOuter plate 1And a first inner coil temperature TInner disc 1(ii) a At a second sampling time t2In the above, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the second outer coilOuter plate 2And a second inner coil temperature TInner disc 2(ii) a According to the change degree Delta T of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateAnd the degree of change Δ T of the temperature of the second inner coil relative to the temperature of the first inner coilInner discAnd adjusting the operation parameters of the air conditioner, wherein the operation parameters are at least one of the rotating speed of an outdoor fan, the opening degree of an expansion valve and the frequency of a compressor. The invention can correspondingly adjust the operation parameters of the air conditioner, and can select the adjustment parameters and adjust the amplitude.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner and the air conditioner.
Background
With the development of science and technology and the increasing improvement of the living standard of people, the air conditioner becomes an indispensable household appliance in the life of people. In recent years, the vertical air conditioner indoor unit is well received by consumers due to its strong cooling effect and novel appearance.
With the technology becoming mature and the competition becoming fierce, the quality requirements of the air conditioner for consumers are higher and higher. The air conditioner needs to have a good refrigeration effect and a good aesthetic degree, and also needs to have multiple functions or advantages of energy conservation, low carbon, intelligent operation and the like.
The air conditioner is influenced by the ambient temperature, the heat exchange effect of the heat exchanger, the matching degree of the system and the like in the using process. Resulting in poor adaptability of the air conditioner during operation. For example, when the ambient temperature is decreased, the operation parameters such as the rotational speed of the outdoor unit fan and the frequency of the compressor of the air conditioner are still operated according to the existing state, which results in the increase of the energy consumption of the air conditioner and is not beneficial to energy saving and environmental protection.
Therefore, there is a need in the art for an air conditioner that can adjust its operating parameters in time according to the operating state and environment, thereby ensuring that the air conditioner operates with optimal parameters all the time, and achieving the effects of energy conservation and environmental protection.
Disclosure of Invention
The invention aims to provide a control method of an air conditioner and the air conditioner thereof, by the method, the running parameters of the air conditioner in the running process are accurately and adaptively adjusted, the opening of an expansion valve, the frequency of a compressor and the air volume of an outdoor unit are reasonably adjusted, the running efficiency of the air conditioner is effectively improved, and the energy-saving effect is realized.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a control method of an air conditioner at a first sampling time point t1In the method, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the first outer coilOuter plate 1And a first inner coil temperature TInner disc 1(ii) a At the second placeSampling time t2In the above, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the second outer coilOuter plate 2And a second inner coil temperature TInner disc 2(ii) a According to the change degree Delta T of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateAnd the degree of change Δ T of the temperature of the second inner coil relative to the temperature of the first inner coilInner discAnd adjusting the operation parameters of the air conditioner, wherein the operation parameters are at least one of the rotating speed of an outdoor fan, the opening degree of an expansion valve and the frequency of a compressor.
Through the technical scheme, the invention collects the temperature of the inner coil and the temperature of the outer coil of the air conditioner according to the change of the temperature of the inner coil and the temperature of the outer coil, correspondingly adjusts the operation parameters of the air conditioner according to the positive and negative directions and the change degree of the change of the inner coil and the outer coil, and selects the adjustment parameters and adjusts the amplitude.
Further, when the temperature of the second inner coil changes relative to the temperature of the first inner coil by the change degree delta TInner discIs zero and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe operating parameter is the rotating speed of the outdoor fan and is a positive value or a negative value; when the temperature of the second outer coil changes relative to the temperature of the first outer coil by delta TOuter plateThe rotating speed of the outdoor fan is changed from a first rotating speed R to a positive value1To a second rotational speed R2(ii) a When the temperature of the second outer coil changes relative to the temperature of the first outer coil by delta TOuter plateThe rotating speed of the outdoor fan is changed from a first rotating speed R to a negative value1To a third speed R3Wherein the third rotational speed R3< first rotational speed R1< second rotational speed R2。
In the technical scheme, the temperature of the inner coil pipe is not changed, and the temperature of the outer coil pipe is changed, so that the requirement of the indoor side cold quantity of the system is not changed, and the heat load of the outdoor condensation side is increased or reduced, therefore, when the heat load of the outdoor condensation side is increased, the rotating speed of the outdoor fan is increased, and when the heat load of the outdoor condensation side is reduced, the rotating speed of the outdoor fan is reduced, so that the air quantity of the outdoor fan is matched with the heat load of the condensation side.
Further, whenDegree of change deltat of the temperature of the second inner coil relative to the temperature of the first inner coilInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateIs zero or negative, the operating parameter is the expansion valve opening, and the expansion valve opening is changed from a first opening E1Becomes the second opening degree E2Wherein the first opening degree E1< second opening degree E2(ii) a When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs negative and the degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateIs zero or negative, the operating parameter is the compressor frequency, and the compressor frequency is set from a first frequency F1To a second frequency F2Wherein the first frequency F1> second frequency F2。
In the technical scheme, the temperature of the inner coil pipe rises, which indicates that the indoor cold quantity of the system is reduced, so that when the temperature of the outer coil pipe is unchanged or reduced, the opening degree of the expansion valve needs to be increased, and the cold quantity output is improved. The temperature of the inner coil pipe is reduced, so that the cold quantity of the indoor side of the system is increased, and when the temperature of the outer coil pipe is unchanged or reduced, the heat load of the outdoor condensation side is unchanged or reduced, the frequency of the compressor needs to be reduced, and the energy-saving effect is realized.
Further, when the temperature of the second inner coil changes relative to the temperature of the first inner coil by the change degree delta TInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe operation parameters are the rotating speed R of the outdoor fan and the frequency F of the compressor, and the rotating speed of the outdoor fan is changed from a first rotating speed R1To a fourth speed of rotation R4The compressor frequency is changed from a first frequency F1To a second frequency F3Wherein the first rotational speed R1< fourth rotational speed R4First frequency F1< second frequency F3(ii) a When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs negative and the degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateIs positiveThe value of the operating parameter is the opening E of the expansion valve, and the opening E of the expansion valve is changed from a first opening E1Becomes the third opening degree E3Wherein the first opening degree E1< third opening degree E3。
In the above technical solution, since the temperature of the inner coil rises and the temperature of the outer coil also rises, it indicates that the cooling capacity of the system at the indoor side is reduced, but the heat load at the outdoor condensation side is increased, and at this time, the operation frequency of the compressor and the air volume of the outdoor unit need to be increased, and the refrigeration effect needs to be enhanced. When the temperature of the inner coil pipe is reduced, but the temperature of the outer coil pipe is still increased, the cold quantity of the indoor side of the system is increased, the heat load of the outdoor condensation side is also increased, the original frequency and the air quantity of the outdoor unit are kept, the opening degree of the expansion valve is increased, and the output of the condensing agent is increased.
Further, a second frequency F2Calculated by the following formula: f2＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is a constant; second opening degree E2Calculated by the following formula: e2＝E1+E1*ΔTInner disc*P/(t2-t1) Wherein P is a constant.
Further, a third frequency F3Calculated by the following formula: f3＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is a constant; third opening degree E3Calculated by the following formula: e3＝E1+E1*ΔTInner disc*P/(t2-t1) Wherein P is a constant.
Furthermore, the value range of the constant K is 1-2, and the value range of the constant P is 1-3.
In the technical scheme, according to the change degrees of different temperatures of the inner coil and the outer coil, different degrees of adjustment are implemented on various parameters, so that the operation parameters of the air conditioner are more reasonable, and the comfort degree and the energy-saving effect are further improved.
Further, when the second external coil temperature T is higher than the first external coil temperature TOuter plate 2Below a first threshold value TThreshold 1The constant K takes the value of K1Often times, theThe value of the number P is P1(ii) a When the temperature T of the second external coil pipeOuter plate 2Higher than or equal to a first threshold value TThreshold 1And is lower than or equal to a second threshold value TThreshold 2The constant K takes the value of K2The constant P takes the value of P2(ii) a When the temperature T of the second external coil pipeOuter plate 2Above a second threshold value TThreshold 2The constant K takes the value of K3The constant P takes the value of P3(ii) a Wherein, K1＜K2＜K3，P1＜P2＜P3。
In the technical scheme, aiming at the temperatures of the outer coil pipes in different temperature intervals, different adjusting constants are adopted to calculate the adjusting degrees of all parameters, so that the adjusting result is more accurate and effective.
Furthermore, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are sequentially sampled at a plurality of sampling time points t from front to back at the same interval timea、tb、tc……tnThe previous sampling time point is the first sampling time point t1The post-sampling time point is a second sampling time point t2。
And the continuous acquisition is beneficial to monitoring and adjusting the operating parameters of the air conditioner in real time.
A control apparatus of an air conditioner, comprising: the temperature acquisition unit is used for acquiring the temperature of the inner coil and the temperature of the outer coil of the air conditioner at a first sampling time point t1 and a second sampling time point t2 respectively; the calculation unit is used for calculating the temperature change degree of the outer coil pipe and the temperature change degree of the inner coil pipe according to the acquisition result of the acquisition unit; a control unit, wherein the control unit adopts the control method of the air conditioner as claimed in any one of claims 1 to 9, and adjusts the operation parameters of the air conditioner according to the calculation result of the calculation unit, wherein the operation parameters comprise at least one of the rotating speed R of the outdoor fan, the opening degree E of the expansion valve and the frequency F of the compressor.
An air conditioner comprising a computer readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the control method of the air conditioner.
A computer-readable storage medium storing a computer program that, when read and executed by a processor, implements the control method of an air conditioner.
In conclusion, the temperature of the inner coil and the temperature of the outer coil can be determined according to the change of the temperature of the inner coil and the temperature of the outer coil, so that intelligent, accurate and reasonable adjustment is realized, and the comfort degree and the energy-saving effect of the air conditioner are improved.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments thereof are described in detail below.
The embodiment of the invention provides a control method of an air conditioner, which is used for controlling the air conditioner at a first sampling time point t1In the method, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the first outer coilOuter plate 1And a first inner coil temperature TInner disc 1(ii) a At a second sampling time t2In the above, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the second outer coilOuter plate 2And a second inner coil temperature TInner disc 2(ii) a According to the change degree Delta T of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateAnd the degree of change Δ T of the temperature of the second inner coil relative to the temperature of the first inner coilInner discAnd adjusting the operation parameters of the air conditioner, wherein the operation parameters are at least one of the rotating speed of an outdoor fan, the opening degree of an expansion valve and the frequency of a compressor.
By the method, the temperature of the inner coil and the temperature of the outer coil can be determined according to the change of the temperature of the inner coil and the temperature of the outer coil, so that intelligent, accurate and reasonable adjustment is realized, and the comfort degree and the energy-saving effect of the air conditioner are improved.
Wherein, the temperature of the inner coil and the temperature of the outer coil of the air conditioner can be sequentially sampled at a plurality of sampling time points t from front to back at the same interval timea、tb、tc……tnTo carry out continuous miningSet, wherein the former sampling time point is the first sampling time point t1The post-sampling time point is a second sampling time point t2. The inner coil temperature and the outer coil temperature are thus continuously monitored and the operating parameters are adjusted at any time.
Because the operation parameter is at least one of the rotating speed of the outdoor fan, the opening degree of the expansion valve and the frequency of the compressor, the invention adopts different adjustment degrees for different types of parameters according to different change directions and degrees of the temperature of the inner coil and the temperature of the outer coil, and the method is as follows.
When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs zero and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe temperature of the inner coil pipe is unchanged, the temperature of the outer coil pipe is changed, the indoor side cold quantity demand of the system is unchanged, the heat load of the outdoor condensation side is increased or decreased, and the operation parameter at the moment is the rotating speed of the outdoor fan.
When the temperature of the second outer coil changes relative to the temperature of the first outer coil by delta TOuter plateThe rotating speed of the outdoor fan is changed from a first rotating speed R to a positive value1To a second rotational speed R2(ii) a When the temperature of the second outer coil changes relative to the temperature of the first outer coil by delta TOuter plateThe rotating speed of the outdoor fan is changed from a first rotating speed R to a negative value1To a third speed R3Wherein the third rotational speed R3< first rotational speed R1< second rotational speed R2. That is, when the heat load of the outdoor condensation side is increased, the rotation speed of the outdoor fan is increased, and when the heat load of the outdoor condensation side is decreased, the rotation speed of the outdoor fan is decreased, so that the air volume of the outdoor fan and the heat load of the condensation side are matched with each other.
When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateAnd the operation parameter is the opening degree of the expansion valve, and the operation parameter is zero or a negative value. This is because the temperature of the inner coil increases, indicating a decrease in the cooling capacity of the system on the indoor side, and thereforeIt is necessary to control the cooling output by adjusting the opening of the expansion valve or adjusting the compressor.
Specifically, the opening degree of the expansion valve is set to a first opening degree E1Becomes the second opening degree E2Wherein the first opening degree E1< second opening degree E2(ii) a When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs negative and the degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateIs zero or negative, the operating parameter is the compressor frequency, and the compressor frequency is set from a first frequency F1To a second frequency F2Wherein the first frequency F1> second frequency F2。
When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe positive value indicates that the temperature of the inner coil rises, the temperature of the outer coil also rises, the cold quantity of the indoor side of the system is reduced, but the heat load of the outdoor condensation side is increased, and the operation parameters are the rotating speed R of the outdoor fan and the frequency F of the compressor.
At this time, the operation frequency of the compressor and the air volume of the outdoor unit need to be increased to enhance the cooling effect. Therefore, the rotating speed of the outdoor fan is changed from the first rotating speed R1To a fourth speed of rotation R4The compressor frequency is changed from a first frequency F1To a second frequency F3Wherein the first rotational speed R1< fourth rotational speed R4First frequency F1< second frequency F3。
When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs negative and the degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateAs a positive value, the inner coil temperature decreases, but the outer coil temperature still increases, indicating an increase in the cooling capacity of the system on the indoor side and an increase in the heat load on the outdoor condenser side.
At this time, the operation parameter is the opening degree E of the expansion valve, and the opening degree E of the expansion valve is changed from the first opening degree E1Becomes thirdOpening degree E3Wherein the first opening degree E1< third opening degree E3. Thus, the original frequency and the air quantity of the outdoor unit are maintained, but the opening degree of the expansion valve is improved, and the output of the condensing agent is increased.
Various parameters need to be adjusted to different degrees according to different operation conditions of the air conditioner. Specifically, the present invention adjusts at least one of the outdoor fan rotation speed, the expansion valve opening degree and the compressor frequency to different degrees according to different degrees of the outer coil temperature variation or the inner coil temperature variation. In particular, the second frequency F2Calculated by the following formula: f2＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is a constant; second opening degree E2Calculated by the following formula: e2＝E1+E1*ΔTInner disc*P/(t2-t1) Wherein P is a constant. Third frequency F3Calculated by the following formula: f3＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is a constant; third opening degree E3Calculated by the following formula: e3＝E1+E1*ΔTInner disc*P/(t2-t1) Wherein P is a constant. In some preferred embodiments of the present invention, the constant K has a value ranging from 1 to 2, and the constant P has a value ranging from 1 to 3.
In some preferred embodiments of the present invention, various parameters can be adjusted to different degrees according to the temperature of the external coil of the air conditioner, i.e. different thermal loads. For example, when the second outside coil temperature TOuter plate 2Below a first threshold value TThreshold 1The constant K takes the value of K1The constant P takes the value of P1(ii) a When the temperature T of the second external coil pipeOuter plate 2Higher than or equal to a first threshold value TThreshold 1And is lower than or equal to a second threshold value TThreshold 2The constant K takes the value of K2The constant P takes the value of P2(ii) a When the temperature T of the second external coil pipeOuter plate 2Above a second threshold value TThreshold 2The constant K takes the value of K3The constant P takes the value of P3. Wherein, K1＜K2＜K3，P1＜P2＜P3. Wherein the first threshold value TThreshold 1At 35 deg.C, a second threshold value TThreshold 2At 50 ℃ K1＝1.2，K2＝1.4，K3＝1.5，P1＝1.5，P2＝2，P3＝2.5。
Example 1
At a first sampling time t1To obtain the temperature T of the first outer coilOuter plate 1At 35 ℃ and the temperature T of the first inner coilInner disc 1The temperature was 13 ℃. At a second sampling time t2To obtain a second outside coil temperature TOuter plate 2At 38 deg.C, the second inner coil temperature TInner disc 2It was 14 ℃. First sampling time point t1And a second sampling time point t2With a phase difference of 60 s.
Degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateIs a positive value, and the change degree delta T of the temperature of the second inner coil relative to the temperature of the first inner coilInner discPositive values. Therefore, the rotating speed of the outdoor fan is changed from the first rotating speed R1To a fourth speed of rotation R4(ii) a Wherein the fourth rotational speed R4Is faster than the first rotating speed R150RPM higher. The frequency of the compressor is changed from a first frequency F1To a second frequency F3First frequency F1< second frequency F3. First frequency F1Is 50Hz, F3＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is K11.2, second frequency F3＝F1+50 (38-35)/60 1.2-50 +3Hz, thus increasing the original frequency from 50Hz to 53 Hz.
Example 2
At a first sampling time t1To obtain the temperature T of the first outer coilOuter plate 1At 45 ℃ and the temperature T of the first inner coilInner disc 1The temperature was 13 ℃. At a second sampling time t2To obtain a second outside coil temperature TOuter plate 2At 45 ℃ and the temperature T of the second inner coilInner disc 2It was 14 ℃. First sampling time point t1And a second sampling time point t2Phase difference60s。
Degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateZero, the degree of change Δ T of the temperature of the second inner coil relative to the temperature of the first inner coilInner discPositive values. Thus, and the expansion valve opening is changed from the first opening E1Becomes the second opening degree E2Wherein the first opening degree E1< second opening degree E2. Constant P is 2, first opening E1Is 150, E2＝E1+E1*ΔTInner disc*P/(t2-t1)＝150+150*(14-13)/60*2＝154。
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 (12)
1. A control method of an air conditioner is characterized in that at a first sampling time point t1In the method, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the first outer coilOuter plate 1And a first inner coil temperature TInner disc 1(ii) a At a second sampling time t2In the above, the temperature of the inner coil and the temperature of the outer coil of the air conditioner are collected to obtain the temperature T of the second outer coilOuter plate 2And a second inner coil temperature TInner disc 2(ii) a According to the change degree Delta T of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateAnd the degree of change Δ T of the temperature of the second inner coil relative to the temperature of the first inner coilInner discAdjusting an operation parameter of the air conditioner, wherein the operation parameter is at least one of the rotating speed of an outdoor fan, the opening degree of an expansion valve and the frequency of a compressor; wherein, when the temperature of the second inner coil changes to the temperature of the first inner coil by the change degree delta TInner discIs zero and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateAdjusting the rotating speed of the outdoor fan if the rotating speed is a positive value or a negative value; when the temperature of the second inner coil changes relative to the temperature of the first inner coilΔTInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe opening of the expansion valve is adjusted to be zero or negative; when the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe positive value adjusts the speed of the outdoor fan and the frequency of the compressor.
2. The method as claimed in claim 1, wherein the degree Δ T of the change of the temperature of the second inner coil with respect to the temperature of the first inner coil is set asInner discIs zero and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe operating parameter is the rotating speed of the outdoor fan and is a positive value or a negative value; when the temperature of the second outer coil changes relative to the temperature of the first outer coil by delta TOuter plateThe rotating speed of the outdoor fan is changed from a first rotating speed R to a positive value1To a second rotational speed R2(ii) a When the temperature of the second outer coil changes relative to the temperature of the first outer coil by delta TOuter plateThe rotating speed of the outdoor fan is changed from a first rotating speed R to a negative value1To a third speed R3Wherein the third rotational speed R3< first rotational speed R1< second rotational speed R2。
3. The method as claimed in claim 1, wherein the degree Δ T of the change of the temperature of the second inner coil with respect to the temperature of the first inner coil is set asInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateIs zero or negative, the operating parameter is the expansion valve opening, and the expansion valve opening is changed from a first opening E1Becomes the second opening degree E2Wherein the first opening degree E1< second opening degree E2(ii) a When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs negative and the degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateIs zero or negative, the operating parameter is the compressor frequency, and the compressor frequency is set from a first frequency F1To a second frequency F2Wherein the first frequency F1> second frequency F2。
4. The method as claimed in claim 1, wherein the degree Δ T of the change of the temperature of the second inner coil with respect to the temperature of the first inner coil is set asInner discIs positive and the degree of change deltat of the second outer coil temperature relative to the first outer coil temperatureOuter plateThe operation parameters are the rotating speed R of the outdoor fan and the frequency F of the compressor, and the rotating speed of the outdoor fan is changed from a first rotating speed R1To a fourth speed of rotation R4The compressor frequency is changed from a first frequency F1To a second frequency F3Wherein the first rotational speed R1< fourth rotational speed R4First frequency F1< second frequency F3(ii) a When the temperature of the second inner coil changes by a degree delta T relative to the temperature of the first inner coilInner discIs negative and the degree of change deltat of the temperature of the second outer coil relative to the temperature of the first outer coilOuter plateThe operation parameter is an expansion valve opening degree E, and the expansion valve opening degree E is changed from a first opening degree E1Becomes the third opening degree E3Wherein the first opening degree E1< third opening degree E3。
5. The control method of an air conditioner according to claim 3, wherein the second frequency F2Calculated by the following formula: f2＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is a constant; second opening degree E2Calculated by the following formula: e2＝E1+E1*ΔTInner disc*P/(t2-t1) Wherein P is a constant.
6. The control method of an air conditioner according to claim 4, wherein the third frequency F3Calculated by the following formula: f3＝F1+F1*ΔTOuter plate*K/(t2-t1) Wherein K is a constant; third opening degree E3Calculated by the following formula: e3 ═ E1+E1*ΔTInner disc*P/(t2-t1) Wherein P is a constant.
7. The method of claim 5 or 6, wherein the constant K has a value in a range of 1-2 and the constant P has a value in a range of 1-3.
8. The control method of the air conditioner according to any one of claims 5 or 6, wherein when the second outside coil temperature T is higher than the first outside coil temperature TOuter plate 2Below a first threshold value TThreshold 1The constant K takes the value of K1The constant P takes the value of P1(ii) a When the temperature T of the second external coil pipeOuter plate 2Higher than or equal to a first threshold value TThreshold 1And is lower than or equal to a second threshold value TThreshold 2The constant K takes the value of K2The constant P takes the value of P2(ii) a When the temperature T of the second external coil pipeOuter plate 2Above a second threshold value TThreshold 2The constant K takes the value of K3The constant P takes the value of P3(ii) a Wherein, K1＜K2＜K3，P1＜P2＜P3。
9. The control method of the air conditioner according to any one of claims 1 to 6, wherein the temperature of the inner coil and the temperature of the outer coil of the air conditioner are sequentially sampled at a plurality of sampling time points t from front to back at the same interval timea、tb、tc……tnThe previous sampling time point is the first sampling time point t1The post-sampling time point is a second sampling time point t2。
10. A control apparatus of an air conditioner, comprising:
temperature acquisition units respectively arranged at the firstSampling time t1And a second sampling time point t2Collecting the temperature of an inner coil and the temperature of an outer coil of the air conditioner;
the calculation unit is used for calculating the temperature change degree of the outer coil pipe and the temperature change degree of the inner coil pipe according to the acquisition result of the acquisition unit;
a control unit, wherein the control unit adopts the control method of the air conditioner as claimed in any one of claims 1 to 9, and adjusts the operation parameters of the air conditioner according to the calculation result of the calculation unit, wherein the operation parameters comprise at least one of the rotating speed R of the outdoor fan, the opening degree E of the expansion valve and the frequency F of the compressor.
11. An air conditioner comprising a computer-readable storage medium storing a computer program and a processor, the computer program being read and executed by the processor to implement the control method of the air conditioner according to any one of claims 1 to 9.
12. A computer-readable storage medium, characterized in that it stores a computer program which, when read and executed by a processor, implements the control method of an air conditioner according to any one of claims 1 to 9.
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