CN110500747B - Control method of air conditioner - Google Patents

Control method of air conditioner Download PDF

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Publication number
CN110500747B
CN110500747B CN201910815549.9A CN201910815549A CN110500747B CN 110500747 B CN110500747 B CN 110500747B CN 201910815549 A CN201910815549 A CN 201910815549A CN 110500747 B CN110500747 B CN 110500747B
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temperature
indoor
compressor
frequency
air conditioner
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CN110500747A (en
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李延政
崔俊
王美术
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Zhengzhou Haier Air Conditioner Co ltd
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Zhengzhou Haier Air Conditioner Co ltd
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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
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • 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
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to the technical field of air conditioning, in particular to a control method of an air conditioner. The invention aims to solve the problems of long cooling time and poor effect in the prior art based on the outdoor environment temperature to adjust the running frequency of the compressor. To this end, the control method of the present invention includes: after the air conditioner enters an indoor temperature control mode, the indoor ambient temperature T is acquirediAnd outdoor ambient temperature To(ii) a Judging indoor environment temperature TiAnd outdoor ambient temperature ToThe size of (d); when T isi≥ToBased on the indoor ambient temperature TiDetermining the frequency F of the compressor; the compressor is controlled to operate at a frequency F. The invention can control the compressor to work at higher frequency by taking the indoor environment temperature as a judgment reference under the condition that the temperature difference between the indoor environment temperature and the outdoor environment temperature is larger, the indoor environment temperature is high, and window opening and ventilation cannot be performed, thereby ensuring the refrigeration effect of the air conditioner, shortening the cooling time and improving the user experience.

Description

Control method of air conditioner
Technical Field
The invention relates to the technical field of air conditioning, in particular to a control method of an air conditioner.
Background
With the continuous improvement of the quality of life, the functional requirements of people on household appliances are higher and higher. Taking an air conditioner as an example, compared with a fixed-frequency air conditioner, the variable-frequency air conditioner has the advantages of high control precision, low power consumption, low noise and the like, so that the variable-frequency air conditioner is more favored by people.
In the existing inverter air conditioner, the running frequency of the compressor is controlled according to the outdoor environment temperature, when the outdoor environment temperature is high, the running frequency of the compressor is relatively high, and when the outdoor environment temperature is low, the running frequency of the compressor is limited to a lower frequency. However, this control method does not take into account the temperature in the room, so that the air conditioner cannot be specifically adjusted to the room ambient temperature during operation. For example, the temperature in a factory building with a harsh environment and a good heat preservation effect is 30 ℃, the outdoor environment temperature is only 20 ℃, and polluted gases such as dust are not suitable for windowing and ventilation in the factory building, and at the moment, if the frequency of the press is still controlled according to the outdoor environment temperature, the press is often operated in a frequency reduction mode, so that the refrigerating time in the factory building is long, the effect is poor, the user experience is very poor, and the user complaint is very easy to cause.
Accordingly, there is a need in the art for a new control method of an air conditioner to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problems of long cooling time and poor effect in the prior art that the operating frequency of the compressor is adjusted based on the outdoor environment temperature, the present invention provides a control method of an air conditioner, wherein the air conditioner comprises a compressor, and the control method comprises:
acquiring indoor ambient temperature T after the air conditioner enters an indoor temperature control modeiAnd outdoor ambient temperature To；
Judging the indoor ambient temperature TiAnd the outdoor ambient temperature ToThe size of (d);
when T isi≥ToBased on the indoor ambient temperature TiDetermining a frequency F of said compressor;
controlling the compressor to operate at the frequency F.
In a preferred embodiment of the above air conditioner control method, the baseAt the indoor ambient temperature TiThe step of determining the frequency F "of the compressor further comprises:
when T isi≥T1Determining the frequency F = F of the compressor1；
When T is1＞Ti≥T2Determining the frequency F = F of the compressor2；
When T is2＞Ti≥T3Determining the frequency F = F of the compressor3；
Wherein, T1Is a first predetermined ambient temperature, T2For a second predetermined ambient temperature, T3Is a third predetermined ambient temperature, and T1＞T2＞T3；
Wherein, F1Is a first predetermined frequency, F2For a second predetermined frequency, F3Is a third predetermined frequency, and F1＞F2＞F3。
In a preferred embodiment of the above method for controlling an air conditioner, the method further includes:
when T isi＜T3When the outdoor temperature T is lower than the indoor temperature T, the air conditioner is controlled to exit the indoor temperature control mode and is based on the outdoor temperature ToDetermining a frequency F of the compressor.
In a preferred technical solution of the control method of the air conditioner, the air conditioner further comprises an external fan, and when T is higher than the preset threshold valuei≥ToThe control method further comprises:
based on the indoor ambient temperature TiAnd determining the rotating speed R of the outer fan.
In a preferred embodiment of the above method for controlling an air conditioner, the control is performed based on the indoor ambient temperature TiThe step of determining the rotational speed R "of the outer fan further comprises:
when T isi≥T1Determining the rotating speed R = R of the outer fan1；
When T is1＞Ti≥T2Determining the rotating speed R = R of the outer fan2；
When T is2＞Ti≥T3Determining the rotating speed R = R of the outer fan3；
Wherein R is1Is a first predetermined rotational speed, R2At a second predetermined rotational speed, R3Is a third predetermined rotational speed, and R1＞R2＞R3。
In a preferred embodiment of the above method for controlling an air conditioner, the air conditioner further comprises an electronic expansion valve, and the electronic expansion valve is set to be in a time of Ti≥ToThe control method further comprises:
based on the indoor ambient temperature TiAnd determining the opening X of the electronic expansion valve.
In a preferred embodiment of the above method for controlling an air conditioner, the control is performed based on the indoor ambient temperature TiThe step of determining the opening degree X "of the electronic expansion valve further comprises:
when T isi≥T1Determining the opening degree X = X of the electronic expansion valve1；
When T is1＞Ti≥T2Determining the opening degree X = X of the electronic expansion valve2；
When T is2＞Ti≥T3Determining the opening degree X = X of the electronic expansion valve3；
Wherein, X1Is a first predetermined opening degree, X2For a second predetermined opening degree, X3Is a third predetermined opening degree, and X1＜X2＜X3。
In a preferred embodiment of the above method for controlling an air conditioner, the method further includes:
receiving an instruction to control a frequency of the compressor based on an indoor ambient temperature;
and controlling the air conditioner to enter the indoor temperature control mode based on the instruction.
In a preferred embodiment of the above method for controlling an air conditioner, the method further includes:
when T isi＜ToWhen the outdoor temperature T is lower than the indoor temperature T, the air conditioner is controlled to exit the indoor temperature control mode and is based on the outdoor temperature ToDetermining a frequency F of the compressor.
The invention also provides a control method of the air conditioner, the air conditioner comprises a compressor, an external fan and an electronic expansion valve, and the control method is characterized by comprising the following steps:
receiving an instruction to control a frequency of the compressor based on an indoor ambient temperature;
controlling the air conditioner to enter an indoor temperature control mode based on the instruction;
acquiring the indoor ambient temperature T after the air conditioner enters the indoor temperature control modeiAnd outdoor ambient temperature To；
Judging the indoor ambient temperature TiAnd the outdoor ambient temperature ToThe size of (d);
when T isi≥ToBased on the indoor ambient temperature TiDetermining the frequency F of the compressor, the rotating speed R of the external fan and the opening X of the electronic expansion valve;
and controlling the compressor to operate at the frequency F and the outer fan to operate at the rotating speed R, and adjusting the opening degree of the electronic expansion valve to the opening degree X.
As can be understood by those skilled in the art, in a preferred embodiment of the present invention, the air conditioner includes a compressor, and the control method includes: after the air conditioner enters an indoor temperature control mode, the indoor ambient temperature T is acquirediAnd outdoor ambient temperature To(ii) a Judging indoor environment temperature TiAnd outdoor ambient temperature ToThe size of (d); when T isi≥ToBased on the indoor ambient temperature TiDetermining the frequency F of the compressor; the compressor is controlled to operate at a frequency F.
By comparing the indoor environment temperature with the outdoor environment temperature after the air conditioner enters an indoor temperature control mode, and controlling the frequency of the compressor based on the indoor environment temperature when the indoor environment temperature is higher than the outdoor environment temperature, the control method can control the compressor to work at a higher frequency by taking the indoor environment temperature as a judgment reference under the condition that the outdoor environment temperature is lower than the indoor environment temperature, particularly under the condition that the temperature difference between the indoor environment temperature and the outdoor environment temperature is larger and the indoor environment temperature is high but window opening ventilation cannot be carried out, so that the refrigeration effect of the air conditioner is ensured, the cooling time is shortened, and the user experience is improved.
Furthermore, the rotating speed of the outer fan and the opening degree of the electronic expansion valve can be matched with the frequency of the compressor by controlling the frequency of the compressor based on the indoor environment temperature and controlling the rotating speed of the outer fan and the opening degree of the electronic expansion valve based on the indoor environment temperature, so that the air conditioner can reach the optimal working state, and the refrigeration effect is further improved.
Further, by controlling the air conditioner to exit the indoor temperature control mode when the indoor ambient temperature is less than the third preset ambient temperature or less than the outdoor ambient temperature, and determining the frequency of the compressor based on the outdoor ambient temperature, the indoor temperature control mode of the air conditioner and the existing refrigeration mode for controlling the frequency of the compressor by the outdoor ambient temperature are complementary to each other, thereby improving the applicability of the air conditioner.
Drawings
A control method of an air conditioner of the present invention is described below with reference to the accompanying drawings. In the drawings:
fig. 1 is a flowchart of a control method of an air conditioner according to the present invention;
FIG. 2 is a logic diagram of an embodiment of a control method of an air conditioner according to the present invention;
fig. 3 is a logic diagram of another embodiment of a control method of an air conditioner according to the present invention.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the following embodiments describe the steps as being in the above sequential order, those skilled in the art will understand that, in order to achieve the effect of the present embodiments, the different steps need not be executed in such an order, and they may be executed simultaneously (in parallel) or in reverse order, and these simple variations are within the scope of the present invention.
The invention mainly aims to overcome the defects of low refrigeration efficiency, slow cooling time and poor user experience caused by controlling the frequency of the compressor by taking the outdoor environment temperature as the basis in the prior art by controlling the frequency of the compressor by taking the indoor environment temperature as the basis. Specifically, in the prior art, the operation frequency of the compressor is usually controlled according to the outdoor environment temperature, when the outdoor environment temperature is high, the operation frequency of the compressor is relatively high, and when the outdoor environment temperature is low, the operation frequency of the compressor is limited to a lower level. However, if the indoor temperature is high and the window ventilation mode is not suitable for reducing the indoor temperature, the problems of low refrigeration efficiency, slow reduction of the indoor temperature and the like can be caused by starting the air conditioner for operation and refrigeration. And this application is through under appropriate condition, specifically for when indoor temperature is higher but outdoor temperature is lower, to the basis of indoor temperature as confirming compressor operating frequency, control compressor operation, can guarantee that the compressor keeps higher frequency operation, reaches quick refrigerated purpose, improves user experience. The control method of the present invention will be further explained with reference to the drawings.
First, a control method of an air conditioner of the present invention will be described with reference to fig. 1. Fig. 1 is a flowchart illustrating a control method of an air conditioner according to the present invention. As shown in fig. 1, to solve the above problem, the air conditioner of the present application mainly includes a compressor, an evaporator, a condenser, an inner fan, an outer fan, an electronic expansion valve, etc., wherein the compressor, the condenser, the electronic expansion valve and the evaporator are sequentially connected to form a circulation loop, and the inner fan and the outer fan are respectively disposed on the condenser and the evaporator. The control method of the air conditioner mainly comprises the following steps:
s100, after the air conditioner enters an indoor temperature control mode, acquiring indoor environment temperature TiAnd outdoor ambient temperature To(ii) a For example, in air-conditioning remote controlAn Indoor Temperature Control function key (ITC key for short) is added on the air conditioner, when a user feels that the Indoor Temperature is high, the ITC key is pressed to send an instruction to the air conditioner to enable the air conditioner to enter an Indoor Temperature Control mode (ITC mode for short) and the air conditioner enters the ITC mode after receiving the instruction and obtains the Indoor environment Temperature TiAnd outdoor ambient temperature ToThe indoor and outdoor temperatures are obtained by temperature measuring elements such as temperature sensors or temperature sensing bulbs provided in the indoor and outdoor units. The indoor temperature control mode refers to an operation mode in which the frequency of the compressor is determined according to the indoor ambient temperature, and the operation of the compressor is controlled according to the determined frequency.
S200, judging the indoor environment temperature TiAnd outdoor ambient temperature ToThe size of (d); for example, when the indoor ambient temperature T is acquirediAnd outdoor ambient temperature ToAnd then, comparing the two values, and sequentially judging whether the current indoor and outdoor ambient temperature is suitable for entering the ITC mode.
S300, when Ti≥ToBased on the indoor ambient temperature TiDetermining the frequency F of the compressor, otherwise, exiting the indoor temperature control mode and based on the outdoor ambient temperature ToDetermining the frequency F of the compressor; for example, when Ti＜ToAnd then, the indoor environment temperature is proved to be lower than the outdoor environment temperature at the moment, the compressor can be ensured to work at a higher working frequency according to the conventional control mode, and therefore the air conditioner is controlled to exit the ITC mode at the moment and the frequency F of the compressor is determined according to the conventional outdoor environment temperature. When T isi≥ToAnd then, the indoor environment temperature is proved to be higher than the outdoor environment temperature, if the outdoor environment temperature is taken as the basis for controlling the frequency of the compressor according to the conventional control mode, the frequency of the compressor is possibly too low, and the refrigeration effect is poor, so that the ITC mode is suitably started at the moment, and the frequency F of the compressor is determined by taking the indoor environment temperature as the basis. For example, when the indoor ambient temperature is 35 ℃, the frequency of the compressor is determined to be 80Hz, and the like.
S400, controlling the compressor to run at a frequency F; for example, after the frequency F of the compressor is determined according to the indoor ambient temperature, the compressor is controlled to operate at the frequency F, so as to achieve the purpose of rapid cooling.
By comparing the indoor environment temperature with the outdoor environment temperature after the air conditioner enters an indoor temperature control mode, and controlling the frequency of the compressor based on the indoor environment temperature when the indoor environment temperature is higher than the outdoor environment temperature, the control method can control the compressor to work at a higher frequency by taking the indoor environment temperature as a judgment reference under the condition that the outdoor environment temperature is lower than the indoor environment temperature, particularly under the condition that the temperature difference between the indoor environment temperature and the outdoor environment temperature is larger and the indoor environment temperature is high but window opening ventilation cannot be carried out, so that the refrigeration effect of the air conditioner is ensured, the cooling time is shortened, and the user experience is improved.
In a preferred embodiment, step S300 further includes:
when T isi≥T1Determining the frequency F = F of the compressor1(ii) a When T is1＞Ti≥T2Determining the frequency F = F of the compressor2(ii) a When T is2＞Ti≥T3Determining the frequency F = F of the compressor3(ii) a When T isi＜T3When the temperature of the outdoor environment is higher than the ITC mode, the air conditioner is controlled to exit the ITC mode and is based on the outdoor environment temperature ToThe frequency F of the compressor is determined. Wherein, T1Is a first predetermined ambient temperature, T2For a second predetermined ambient temperature, T3Is a third predetermined ambient temperature, and T1＞T2＞T3(ii) a Wherein, F1Is a first predetermined frequency, F2For a second predetermined frequency, F3Is a third predetermined frequency, and F1＞F2＞F3。
For example, T1=40℃，T2=30℃，T3=25℃，F1=80Hz，F2=50Hz，F3=30 Hz. When T isiWhen the temperature is more than or equal to 40 ℃, the current indoor temperature is proved to be extremely high, the rapid refrigeration is required, otherwise, the potential safety hazard is likely to appear, and at the moment, the compressor is controlled to work at the high frequency of 80Hz, the refrigerant pressure of the air-conditioning system can be improved, so that the air-conditioning system can be improvedHigh heat exchange speed and effect, and quick refrigeration. When the temperature is higher than 40 ℃ and is higher than TiWhen the temperature is more than or equal to 30 ℃, the current indoor temperature is proved to be higher, and the refrigeration needs to be carried out at a higher speed so as to reduce the indoor temperature to a more comfortable range, at the moment, the compressor is controlled to work at a middle-high frequency of 50Hz, so that the refrigerant pressure of an air conditioning system can be improved, the refrigeration effect of an air conditioner is improved, and the indoor environment temperature is reduced at a higher speed. When the temperature is higher than 30 ℃ and is higher than TiWhen the temperature is more than or equal to 25 ℃, the current indoor environment temperature is proved to be close to a more comfortable range, the indoor temperature can be reduced to the comfortable temperature only by properly improving the running frequency of the compressor, and the compressor is controlled to work at a low frequency of 30Hz so as to stably reduce the indoor temperature to the comfortable range and ensure the indoor comfort level. When T isiWhen the temperature is lower than 25 ℃, the indoor temperature is proved to be in a more comfortable temperature interval, so that the air conditioner does not need to work in an ITC mode any more, and the air conditioner is controlled to exit the ITC mode and run in a conventional working mode of determining the frequency of the compressor through the outdoor environment temperature.
Through controlling the compressor to work with different frequencies in different indoor temperature ranges, the indoor temperature reduction speed can be reduced to a more comfortable temperature range, the refrigeration effect and the temperature reduction speed are guaranteed, and the user can be given the best experience under various temperature conditions. When the indoor environment temperature is lower than the third preset environment temperature or lower than the outdoor environment temperature, the air conditioner is controlled to exit the ITC mode, the frequency of the compressor is determined based on the outdoor environment temperature, the indoor temperature control mode of the air conditioner and the existing refrigeration mode for controlling the frequency of the compressor through the outdoor environment temperature are mutually complemented, and therefore the applicability of the air conditioner is improved.
Of course, T is as defined above1-T3、F1-F3The specific values and the segmentation manner are only exemplary, and those skilled in the art can reasonably adjust the values so that the control method can be applied to more specific application scenarios. For example, one skilled in the art may divide the temperature into four or five temperature segments, or may divide the temperature into two temperature segments, etc. according to the actual situation. In particular, the aboveIn the numerical value, T3The value of (a) is special, and the value directly determines the comfort degree of the indoor environment temperature. It is generally considered that when the indoor ambient temperature is around 26 ℃, the indoor temperature is more suitable, and therefore, T is3The value range of (A) is preferably fluctuated at about 26 ℃.
In a preferred embodiment, when T isi≥ToMeanwhile, the control method of the air conditioner further comprises the following steps: based on the indoor ambient temperature TiAnd determining the rotating speed R of the outer fan and the opening X of the electronic expansion valve. Specifically, when Ti≥T1When the rotating speed R = R of the outer fan is determined1Opening degree X = X of the electronic expansion valve1(ii) a When T is1＞Ti≥T2When the rotating speed R = R of the outer fan is determined2Opening degree X = X of the electronic expansion valve2(ii) a When T is2＞Ti≥T3When the rotating speed R = R of the outer fan is determined3Opening degree X = X of the electronic expansion valve3(ii) a Wherein R is1Is a first predetermined rotational speed, R2At a second predetermined rotational speed, R3Is a third predetermined rotational speed, and R1＞R2＞R3，X1＜X2＜X3。
For example, the above-mentioned T is still used1=40℃，T2=30℃，T3=25℃，F1=80Hz，F2=50Hz，F3For example, =30Hz, R may be allowed to stand1=1000r/min，R2=600r/min，R3=400r/min, let X1=100P (step), X2=150P，X3= 200P. When T isiWhen the temperature is more than or equal to 40 ℃, the compressor works at the high frequency of 80Hz, at the moment, if the aim of quick refrigeration is to be achieved, the heat exchange quantity of the condenser needs to be accelerated, the phase change temperature of the refrigerant is reduced, at the moment, the external fan is controlled to operate at the high rotating speed of 1000r/min, and the electronic expansion valve is adjusted to the small opening of 100P, so that the condition of quick refrigeration is met. When the temperature is higher than 40 ℃ and is higher than TiWhen the temperature is more than or equal to 30 ℃, the compressor works at the medium-high frequency of 50Hz, at the moment, if the indoor environment temperature is reduced at a higher speed, the parameters of the outer fan and the electronic expansion valve need to be controlled to be matched, and at the moment, the outer fan is controlled to rotate at the medium-high speed of 600r/minAnd operating, and adjusting the electronic expansion valve to a middle opening degree of 150P so as to satisfy the current cooling condition. When the temperature is higher than 30 ℃ and is higher than TiWhen the temperature is more than or equal to 25 ℃, the compressor works at the low frequency of 30Hz, in order to ensure that the indoor temperature is stably reduced to a comfortable range and ensure the indoor comfort level, the rotating speed of the outer fan needs to be properly reduced and the opening of the electronic expansion valve is improved, at the moment, the outer fan is controlled to operate at the low rotating speed of 400r/min, the electronic expansion valve is adjusted to the larger opening of 200P, and the condition of stable temperature reduction can be met.
Through the frequency of the compressor based on the indoor environment temperature, the rotating speed of the outer fan and the opening degree of the electronic expansion valve are controlled based on the indoor environment temperature, the control method can also enable the rotating speed of the outer fan and the opening degree of the electronic expansion valve to be matched with the frequency of the compressor, so that the air conditioner can reach the optimal working state, and the refrigeration effect is further improved.
Of course, R1-R3，X1-X3The specific values of (a) are also merely exemplary and can be adjusted by one skilled in the art based on the actual application scenario. In addition, it can be understood by those skilled in the art that the adjustment of the rotation speed of the external fan and the opening degree of the electronic expansion valve is not necessary while adjusting the frequency of the compressor, and those skilled in the art can adjust only one of the external fan and the electronic expansion valve, or neither of them, and the implementation changes do not depart from the principle of the present invention, and thus will also fall into the protection scope of the present application.
A specific embodiment of a control method of an air conditioner of the present invention will be described with reference to fig. 2.
As shown in fig. 2, in one possible control mode:
(1) a user sends an instruction to the air conditioner in a mode of pressing an ITC key on a remote controller, and the air conditioner receives the instruction and enters an ITC mode;
(2) air conditioner controlling temperature sensors on indoor unit and outdoor unit to detect indoor environment temperature TiAnd outdoor ambient temperature ToAnd comparing the sizes of the two;
(3) when T isi≥ToIf not, the air conditioner directly exits the ITC mode and is controlled according to the outdoor environment temperature T in the conventional control modeoDetermining the frequency F of the compressor, and then controlling the compressor to operate based on the frequency F; when T isi≥ToWhen the temperature is up, the air conditioner further judges the indoor environment temperature TiAnd a first predetermined ambient temperature T1The size of (d);
(4) when T isi≥T1When the temperature is up, determining the frequency F =80Hz of the compressor, the rotating speed R =1000R/min of the external fan and the opening X =100P of the electronic expansion valve, then controlling the air conditioner to operate according to the parameters, and obtaining the indoor environment temperature again after the interval of 3min for comparison; when T isi＞T1If not, further comparing the indoor ambient temperature TiAnd a first predetermined ambient temperature T1And a second preset ambient temperature T2The size of (d);
(5) when T is1＞Ti≥T2When the temperature is up, determining that the frequency of the compressor is 50Hz, the rotating speed R =600R/min of the external fan and the opening X =150P of the electronic expansion valve, then controlling the air conditioner to operate according to the parameters, and obtaining the indoor environment temperature again after the interval of 3min for comparison; when T is1＞Ti≥T2If not, further comparing the indoor ambient temperature with a second preset ambient temperature T2And a third preset ambient temperature T3The size of (d);
(6) when T is2＞Ti≥T3When the temperature is up, determining that the frequency of the compressor is 30Hz, the rotating speed R =400R/min of the outer fan and the opening X =200P of the electronic expansion valve, then controlling the air conditioner to operate according to the parameters, and obtaining the indoor environment temperature again after the interval of 3min for comparison; when T is2＞Ti≥T3If not, T is provedi＜T3When the room temperature is at or is reduced to a more proper temperature, the ITC mode is directly exited, and the user is waited to turn on the machine next time.
Another specific embodiment of the present invention will be described with reference to fig. 3.
As shown in fig. 3, in another possible control manner:
(1) a user sends an instruction to the air conditioner in a mode of pressing an ITC key on a remote controller, and the air conditioner receives the instruction and enters an ITC mode;
(2) air conditioner controlling temperature sensors on indoor unit and outdoor unit to detect indoor environment temperature TiAnd outdoor ambient temperature ToComparing whether the difference value of the indoor temperature and the outdoor temperature is larger than a preset difference value delta T or not so as to determine that the indoor temperature is higher and the indoor and outdoor temperature difference is larger;
(3) when T isi-ToWhen the temperature difference is not more than or equal to Delta T, the temperature difference is proved to be small at the moment, the frequency of the compressor is completely feasible to be adjusted according to the outdoor environment temperature, the air conditioner directly exits from the ITC mode at the moment, and the outdoor environment temperature T is adjusted according to the conventional control modeoDetermining the frequency F of the compressor, and then controlling the compressor to operate based on the frequency F; when T isi-ToWhen the temperature T is more than or equal to the temperature T, the indoor temperature is higher and the indoor and outdoor temperature difference is larger, and the air conditioner judges the indoor environment temperature T at the same timeiAnd a first predetermined ambient temperature T1A second preset ambient temperature T2And a third predetermined ambient temperature T3The size of (d);
(4) when T isi≥T1When the temperature is up, determining the frequency F =80Hz of the compressor, the rotating speed R =1000R/min of the external fan and the opening X =100P of the electronic expansion valve, then controlling the air conditioner to operate according to the parameters, and obtaining the indoor environment temperature again after the interval of 3min for comparison;
(5) when T is1＞Ti≥T2When the temperature is up, determining that the frequency of the compressor is 50Hz, the rotating speed R =600R/min of the external fan and the opening X =150P of the electronic expansion valve, then controlling the air conditioner to operate according to the parameters, and obtaining the indoor environment temperature again after the interval of 3min for comparison;
(6) when T is2＞Ti≥T3When the frequency of the compressor is determined to be 30Hz, the rotating speed R =400R/min of the external fan and the opening X =200P of the electronic expansion valve, then the air conditioner is controlled to operate according to the parameters,and obtaining the indoor environment temperature again after 3min interval for comparison;
(7) when T isi＜T3When the temperature is in the proper range, the temperature is proved to be in the proper range, and then the ITC mode is directly exited to wait for the next start-up of the user.
It should be noted that although the detailed steps of the method of the present invention have been described in detail, those skilled in the art can combine, separate and change the order of the above steps without departing from the basic principle of the present invention, and the modified technical solution does not change the basic concept of the present invention and thus falls into the protection scope of the present invention.
Those of skill in the art will appreciate that the method steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of electronic hardware and software. Whether such functionality is implemented as electronic hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (9)

1. A control method of an air conditioner including a compressor, characterized by comprising:
cooling in the air conditioner and entering the chamberAfter the internal temperature control mode, obtaining the indoor environment temperature TiAnd outdoor ambient temperature To；
Judging the indoor ambient temperature TiAnd the outdoor ambient temperature ToThe size of (d);
when T isi≥ToBased on the indoor ambient temperature TiDetermining a frequency F of said compressor;
when T isi＜ToWhen the outdoor temperature T is lower than the indoor temperature T, the air conditioner is controlled to exit the indoor temperature control mode and is based on the outdoor temperature ToDetermining a frequency F of the compressor;
controlling the compressor to operate at the frequency F.
2. The control method of an air conditioner according to claim 1, wherein "based on the indoor ambient temperature TiThe step of determining the frequency F "of the compressor further comprises:
when T isi≥T1Determining the frequency F = F of the compressor1；
When T is1＞Ti≥T2Determining the frequency F = F of the compressor2；
When T is2＞Ti≥T3Determining the frequency F = F of the compressor3；
Wherein, T1Is a first predetermined ambient temperature, T2For a second predetermined ambient temperature, T3Is a third predetermined ambient temperature, and T1＞T2＞T3；
Wherein, F1Is a first predetermined frequency, F2For a second predetermined frequency, F3Is a third predetermined frequency, and F1＞F2＞F3。
3. The control method of an air conditioner according to claim 2, further comprising:
when T isi＜T3When it is, control the air conditionerExiting the indoor temperature control mode and based on the outdoor ambient temperature ToDetermining a frequency F of the compressor;
wherein, T3＞T0。
4. The method of claim 2, wherein the air conditioner further comprises an external fan, when T is higher than Ti≥ToThe control method further comprises:
based on the indoor ambient temperature TiAnd determining the rotating speed R of the outer fan.
5. The control method of an air conditioner according to claim 4, wherein "based on the indoor ambient temperature TiThe step of determining the rotational speed R "of the outer fan further comprises:
when T isi≥T1Determining the rotating speed R = R of the outer fan1；
When T is1＞Ti≥T2Determining the rotating speed R = R of the outer fan2；
When T is2＞Ti≥T3Determining the rotating speed R = R of the outer fan3；
Wherein R is1Is a first predetermined rotational speed, R2At a second predetermined rotational speed, R3Is a third predetermined rotational speed, and R1＞R2＞R3。
6. The method as claimed in claim 2, wherein the air conditioner further comprises an electronic expansion valve at Ti≥ToThe control method further comprises:
based on the indoor ambient temperature TiAnd determining the opening X of the electronic expansion valve.
7. The control method of an air conditioner according to claim 6, wherein "based on the indoor ambient temperature TiDeterminingThe step of opening X "of the electronic expansion valve further comprises:
when T isi≥T1Determining the opening degree X = X of the electronic expansion valve1；
When T is1＞Ti≥T2Determining the opening degree X = X of the electronic expansion valve2；
When T is2＞Ti≥T3Determining the opening degree X = X of the electronic expansion valve3；
Wherein, X1Is a first predetermined opening degree, X2For a second predetermined opening degree, X3Is a third predetermined opening degree, and X1＜X2＜X3。
8. The control method of an air conditioner according to claim 1, further comprising:
receiving an instruction to control a frequency of the compressor based on an indoor ambient temperature;
and controlling the air conditioner to enter the indoor temperature control mode based on the instruction.
9. A control method of an air conditioner, the air conditioner comprises a compressor, an external fan and an electronic expansion valve, and is characterized by comprising the following steps:
receiving an instruction to control a frequency of the compressor based on an indoor ambient temperature;
controlling the air conditioner to enter an indoor temperature control mode based on the instruction;
acquiring the indoor ambient temperature T after the air conditioner enters the indoor temperature control modeiAnd outdoor ambient temperature To；
Judging the indoor ambient temperature TiAnd the outdoor ambient temperature ToThe size of (d);
when T isi≥ToBased on the indoor ambient temperature TiDetermining the frequency F of the compressor, the rotating speed R of the external fan and the opening X of the electronic expansion valve;
controlling the compressor to operate at the frequency F and the outer fan to operate at the rotating speed R, and adjusting the opening degree of the electronic expansion valve to the opening degree X;
the control method further comprises the following steps:
when T isi＜ToWhen the outdoor temperature T is lower than the indoor temperature T, the air conditioner is controlled to exit the indoor temperature control mode and is based on the outdoor temperature ToDetermining a frequency F of the compressor;
controlling the compressor to operate at the frequency F.
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