CN109489195B - Control method for air conditioner and air conditioner - Google Patents
Control method for air conditioner and air conditioner Download PDFInfo
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- CN109489195B CN109489195B CN201811244853.4A CN201811244853A CN109489195B CN 109489195 B CN109489195 B CN 109489195B CN 201811244853 A CN201811244853 A CN 201811244853A CN 109489195 B CN109489195 B CN 109489195B
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- refrigerant
- air conditioner
- heat exchanger
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- air
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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
- F24F11/70—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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B45/00—Arrangements for charging or discharging refrigerant
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid 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 belongs to the technical field of air conditioners and aims to solve the problem that the existing air conditioner cannot thoroughly solve the condensation problem of an air conditioner by adopting a mode of increasing the rotating speed of an indoor unit fan. Therefore, the invention provides a control method for an air conditioner and the air conditioner, wherein the control method comprises the following steps: acquiring the dew point temperature of indoor air and the coil temperature of an indoor heat exchanger of an air conditioner; and selectively adjusting the refrigerant quantity in the refrigerant circulating system of the air conditioner according to the dew point temperature of the indoor air and the temperature of the coil pipe of the indoor heat exchanger. According to the invention, whether the air conditioner has condensation or has condensation risk can be judged through the dew point temperature of air and the coil temperature of the indoor heat exchanger, so that the amount of the refrigerant in a refrigerant circulating system of the air conditioner can be adjusted in a targeted manner, the coil temperature of the indoor heat exchanger is adjusted, the condensation of the air conditioner is avoided, the phenomena of water blowing and water dripping of the air conditioner are avoided, the indoor environment is not polluted, and the user experience is improved.
Description
Technical Field
The invention belongs to the technical field of air conditioners, and particularly provides a control method for an air conditioner and the air conditioner.
Background
The air conditioner is equipment capable of refrigerating and heating the indoor space, a large amount of condensed water can be generated on an indoor heat exchanger (evaporator) when the traditional air conditioner is used for refrigerating, particularly in a humid area, and when the condensed water is accumulated to a certain amount, the condensed water can be dripped into an air duct and then seeped into the interior of an indoor unit of the air conditioner or blown out from an air port of the indoor unit, so that the normal use of a user is influenced, and potential safety hazards are generated.
In the prior art, the condensation prevention mode of the air conditioner generally prevents excessive condensation by improving the rotating speed of a fan of an indoor unit, so that the phenomenon of water blowing or water dripping of the air conditioner is reduced, but the condensation problem of the air conditioner cannot be completely solved by the mode.
Therefore, there is a need in the art for a new control method for an air conditioner and a corresponding air conditioner to solve the above problems.
Disclosure of Invention
In order to solve the above problems in the prior art, that is, to solve the problem that the existing air conditioner cannot completely solve the condensation of the air conditioner by increasing the rotating speed of the fan of the indoor unit, the invention provides a control method for the air conditioner, which comprises the following steps: acquiring the dew point temperature of indoor air and the coil temperature of an indoor heat exchanger of an air conditioner; and selectively adjusting the refrigerant quantity in the refrigerant circulating system of the air conditioner according to the dew point temperature of the indoor air and the temperature of the coil pipe of the indoor heat exchanger.
In a preferred embodiment of the above control method, the step of selectively adjusting the refrigerant quantity in the refrigerant circulation system of the air conditioner according to the dew-point temperature of the indoor air and the coil temperature of the indoor heat exchanger includes: calculating the difference between the dew point temperature of the indoor air and the temperature of a coil of the indoor heat exchanger; comparing the difference value with a first preset value; and selectively delivering the refrigerant to the refrigerant circulating system according to the comparison result of the difference value and the first preset value.
In a preferred embodiment of the above control method, the step of selectively delivering the refrigerant to the refrigerant circulation system according to a comparison result between the difference and the first preset value includes: and if the difference value is larger than the first preset value, delivering the refrigerant to the refrigerant circulating system.
In a preferred embodiment of the above control method, the step of selectively delivering the refrigerant to the refrigerant circulation system according to a comparison result between the difference and the first preset value further includes: if the difference value is not larger than the first preset value, the refrigerant is not conveyed to the refrigerant circulating system.
In a preferred embodiment of the above control method, the step of selectively adjusting the refrigerant quantity in the refrigerant circulation system of the air conditioner according to the dew-point temperature of the indoor air and the coil temperature of the indoor heat exchanger includes: calculating the difference between the dew point temperature of the indoor air and the temperature of a coil of the indoor heat exchanger; comparing the difference value with a second preset value; and selectively recycling the refrigerant in the refrigerant circulating system according to the comparison result of the difference value and the second preset value.
In a preferred embodiment of the above control method, the step of selectively recycling the refrigerant in the refrigerant circulation system according to a comparison result between the difference and a second preset value includes: and if the difference value is smaller than a second preset value, recovering the refrigerant in the refrigerant circulating system.
In a preferred embodiment of the above control method, the step of selectively recycling the refrigerant in the refrigerant circulation system according to a comparison result between the difference and a second preset value further includes: if the difference value is not less than the second preset value, the refrigerant in the refrigerant circulating system is not recycled.
In another aspect, the invention provides an air conditioner, which comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, an electronic expansion valve, a four-way valve, wherein the outdoor heat exchanger, the compressor, the indoor heat exchanger and the electronic expansion valve form a closed-loop refrigerant circulation system, the four-way valve can be reversed to enable the air conditioner to be in a refrigeration working condition or a heating working condition, the air conditioner further comprises a liquid storage assembly, the liquid storage assembly is connected between an exhaust pipe and an air return pipe of the compressor, and the liquid storage assembly is arranged to be capable of conveying refrigerant to the refrigerant circulation system and recovering the refrigerant in the refrigerant circulation system.
In the preferable technical scheme of the above air conditioner, the liquid storage assembly comprises a liquid storage tank, a first control valve and a second control valve, the liquid storage tank is connected with one of the exhaust pipe and the air return pipe of the compressor through the first control valve, and the liquid storage tank is connected with the other of the exhaust pipe and the air return pipe of the compressor through the second control valve.
In the preferable technical scheme of the air conditioner, the compressor is a fixed-frequency compressor.
The technical scheme includes that whether the air conditioner has condensation or has condensation risk can be judged according to the dew point temperature of air and the coil temperature of the indoor heat exchanger, so that the amount of refrigerant in a refrigerant circulating system of the air conditioner can be adjusted in a targeted manner, the coil temperature of the indoor heat exchanger is adjusted, the condensation of the air conditioner is avoided, the phenomena of water blowing and water dripping of the air conditioner are avoided, the indoor environment is not polluted, and the user experience is improved.
Further, when the difference between the dew point temperature of the air and the coil temperature of the indoor heat exchanger is greater than a first preset value, the indoor heat exchanger is at risk of condensation, the refrigerant is conveyed into the refrigerant circulating system of the air conditioner at the moment, the refrigerant quantity in the refrigerant circulating system is increased, and then the coil temperature of the indoor heat exchanger is increased, so that condensation is generated on the indoor heat exchanger, the air conditioner is guaranteed not to be blown and dripped, and user experience is improved.
Further, when the difference between the dew point temperature of the air and the temperature of the coil of the indoor heat exchanger is not larger than a first preset value, the indoor heat exchanger does not have the risk of condensation, and the air conditioner only needs normal refrigeration.
Further, when the difference value between the dew point temperature of the air and the temperature of the coil pipe of the indoor heat exchanger is smaller than a second preset value, the risk of condensation on the indoor heat exchanger is eliminated, and at the moment, the refrigerant in the refrigerant circulating system of the air conditioner can be recovered to reduce the amount of the refrigerant in the refrigerant circulating system, so that the air conditioner can continue to normally refrigerate.
Further, when the difference between the dew point temperature of the air and the temperature of the coil of the indoor heat exchanger is not less than a second preset value, the indoor heat exchanger still has the risk of condensation, the current refrigerant quantity should be kept in the refrigerant circulating system at the moment, and the condensation on the indoor heat exchanger is avoided.
In addition, the invention also provides the air conditioner, the refrigerant can be conveyed into the refrigerant circulating system of the air conditioner at any time through the liquid storage assembly in the air conditioner, and the refrigerant in the refrigerant circulating system can be recovered, so that the coil temperature of the indoor heat exchanger can be provided by conveying the refrigerant into the refrigerant circulating system when the indoor heat exchanger generates condensation or has a condensation risk, the generation of condensation is avoided, namely, the phenomena of water blowing and water dripping of the air conditioner are avoided, the indoor environment is not polluted, and the user experience is improved.
Drawings
Fig. 1 is a schematic structural view of an air conditioner of the present invention;
fig. 2 is a flowchart of the control method of 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.
It should be noted that the terms "first" and "second" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The invention provides a control method for an air conditioner and the air conditioner based on the background technology, which aims to avoid the condensation of the air conditioner, namely avoid the phenomena of water blowing and water dripping of the air conditioner, avoid the indoor environment pollution and improve the user experience.
Specifically, as shown in fig. 1, the air conditioner of the present invention includes an indoor heat exchanger 1, an outdoor heat exchanger 2, a compressor 3, an electronic expansion valve 4, and a four-way valve 5, where the outdoor heat exchanger 2, the compressor 3, the indoor heat exchanger 1, and the electronic expansion valve 4 form a closed-loop refrigerant circulation system, the four-way valve 5 can be reversed to enable the air conditioner to be in a cooling working condition or a heating working condition, and the air conditioner further includes a liquid storage assembly, the liquid storage assembly is connected between an exhaust pipe and a return air pipe of the compressor 3, and the liquid storage assembly is configured to be capable of conveying a refrigerant to the refrigerant circulation system and recovering the refrigerant in the refrigerant circulation system. Wherein, the stock solution subassembly can be for the structure that uses liquid storage pot 6 as the main part, perhaps other forms's stock solution subassembly, and the technical personnel in the field can set up the concrete structure of stock solution subassembly in practical application in a flexible way, as long as can adjust the refrigerant in the refrigerant circulation system through the stock solution subassembly can. In a preferred case, the compressor 3 is a fixed frequency compressor 3. In addition, an indoor air dew point temperature sensor is arranged on the indoor unit of the air conditioner, the dew point temperature of the indoor air can be detected through the indoor air dew point temperature sensor, a coil pipe temperature sensor is further arranged on the indoor unit of the air conditioner, and the coil pipe temperature of the indoor heat exchanger 1 of the indoor unit can be detected through the coil pipe temperature sensor. The indoor air dew point temperature sensor and the coil pipe temperature sensor are in communication connection with a controller of the air conditioner, so that detected dew point temperature data of the indoor air and coil pipe temperature data of the indoor heat exchanger 1 are transmitted to the controller.
Preferably, the liquid storage assembly comprises a liquid storage tank 6, a first control valve 7 and a second control valve 8, the liquid storage tank 6 is connected with one of the exhaust pipe and the air return pipe of the compressor 3 through the first control valve 7, and the liquid storage tank 6 is connected with the other of the exhaust pipe and the air return pipe of the compressor 3 through the second control valve 8. In a possible case, as shown in fig. 1, from the perspective of air conditioner refrigeration, the first control valve 7 is connected to the exhaust pipe of the compressor 3, the second control valve 8 is connected to the return pipe of the compressor 3, the first control valve 7 and the second control valve 8 are respectively disposed at two sides of the liquid storage tank 6, when the air conditioner is refrigerating, if the first control valve 7 is closed, the second control valve 8 is opened, the refrigerant in the liquid storage tank 6 is delivered to the refrigerant circulation system, and if the first control valve 7 is opened, the second control valve 8 is closed, the refrigerant in the refrigerant circulation system is recovered to the liquid storage tank 6. It should be noted that, part of the refrigerant in the refrigerant circulation system is recovered to the liquid storage tank 6, and the other part of the refrigerant still needs to be in the refrigerant circulation system, so as to ensure normal refrigeration of the air conditioner. Furthermore, the first control valve 7 and the second control valve 8 are preferably provided as electromagnetic valves, and the first control valve 7 and the second control valve 8 are both connected to a controller of the air conditioner, which is capable of controlling the on/off of the first control valve 7 and the second control valve 8.
As shown in fig. 2, the control method of the present invention includes: acquiring the dew point temperature of indoor air and the coil temperature of an indoor heat exchanger of an air conditioner; and selectively adjusting the refrigerant quantity in the refrigerant circulating system of the air conditioner according to the dew point temperature of the indoor air and the temperature of the coil pipe of the indoor heat exchanger. Whether the indoor heat exchanger of the air conditioner has the condensation risk or not can be judged by calculating the difference between the dew point temperature of the indoor air and the coil temperature of the indoor heat exchanger, whether the indoor heat exchanger of the air conditioner has the condensation risk or not can also be judged by calculating the ratio between the dew point temperature of the indoor air and the coil temperature of the indoor heat exchanger, whether the indoor heat exchanger of the air conditioner has the condensation risk or not can be flexibly set by a technical person in the field in practical application through two parameters of the dew point temperature of the indoor air and the coil temperature of the indoor heat exchanger, and the specific mode of judging whether the indoor heat exchanger of the air conditioner has the condensation risk or not can be realized as long as a refrigerant in a refrigerant circulating system of the air conditioner can be selectively adjusted by judging whether the air conditioner has the condensation risk or not.
Preferably, the step of selectively adjusting the refrigerant quantity in the refrigerant circulation system of the air conditioner according to the dew-point temperature of the indoor air and the coil temperature of the indoor heat exchanger includes: calculating the difference between the dew point temperature of the indoor air and the temperature of a coil of the indoor heat exchanger; comparing the difference value with a first preset value; and selectively delivering the refrigerant to the refrigerant circulating system according to the comparison result of the difference value and the first preset value. Specifically, the step of selectively delivering the refrigerant to the refrigerant circulation system according to the comparison result of the difference value and the first preset value includes: and if the difference value is larger than the first preset value, delivering the refrigerant to the refrigerant circulating system. Under the condition, the difference between the coil temperature of the indoor heat exchanger (namely an evaporator) and the dew point temperature of the indoor air is too large when the air conditioner refrigerates, condensation is easily generated on the coil or the risk of condensation exists, and at the moment, a refrigerant is conveyed into a refrigerant circulating system, so that the coil temperature of the indoor heat exchanger is improved, and the effect of preventing condensation is achieved. The step of selectively delivering the refrigerant to the refrigerant circulation system according to the comparison result of the difference value and the first preset value further comprises: if the difference value is not larger than the first preset value, the refrigerant is not conveyed to the refrigerant circulating system. In this case, it is described that the difference between the coil temperature of the indoor heat exchanger (i.e., the evaporator) and the dew point temperature of the indoor air is not large when the air conditioner performs cooling, and there is no risk of condensation on the coil, and at this time, the refrigerant may not be conveyed into the refrigerant circulation system. In the practical application, a person skilled in the art can flexibly set a specific temperature value of the first preset value as long as a demarcation point determined by the first preset value can determine whether a condensation risk exists in an indoor heat exchanger of the air conditioner and determine whether a refrigerant needs to be conveyed into the refrigerant circulation system.
Preferably, the step of selectively adjusting the refrigerant quantity in the refrigerant circulation system of the air conditioner according to the dew-point temperature of the indoor air and the coil temperature of the indoor heat exchanger includes: calculating the difference between the dew point temperature of the indoor air and the temperature of a coil of the indoor heat exchanger; comparing the difference value with a second preset value; and selectively recycling the refrigerant in the refrigerant circulating system according to the comparison result of the difference value and the second preset value. Specifically, the step of selectively recycling the refrigerant in the refrigerant circulation system according to the comparison result between the difference and the second preset value includes: and if the difference value is smaller than a second preset value, recovering the refrigerant in the refrigerant circulating system. In this case, it is described that the difference between the coil temperature of the indoor heat exchanger (i.e., the evaporator) and the dew point temperature of the indoor air is very small when the air conditioner performs cooling, and there is no risk of condensation on the coil, and at this time, the refrigerant in the refrigerant circulation system can be recovered. The step of selectively recycling the refrigerant in the refrigerant circulation system according to the comparison result of the difference value and the second preset value further comprises: if the difference value is not less than the second preset value, the refrigerant in the refrigerant circulating system is not recycled. In this case, it is described that the difference between the coil temperature of the indoor heat exchanger (i.e., the evaporator) and the dew point temperature of the indoor air is still relatively large when the air conditioner performs cooling, and the coil still has a risk of condensation, so that the refrigerant is not easily recovered at this time. In the practical application, a person skilled in the art can flexibly set a specific temperature value of the second preset value as long as the boundary point determined by the second preset value can determine whether the indoor heat exchanger of the air conditioner has a condensation risk and determine whether to recover the refrigerant in the refrigerant circulation system.
It should be noted that the above-mentioned control logics can be performed individually or in combination, and those skilled in the art can flexibly set the application manner of the above-mentioned control logics in practical application, for example, when the above-mentioned control logics are used in combination, the second preset value Δ T2 is set to be smaller than the first preset value Δ T1, as shown in fig. 1, during the refrigeration process of the air conditioner, the dew point temperature T1 of the indoor air and the coil temperature T2 of the indoor heat exchanger 1 (i.e. the evaporator) are obtained, if T1-T2 >. Δ T1, the first control valve 7 is controlled to be closed, the second control valve 8 is controlled to be opened, so that the refrigerant in the liquid storage tank 6 enters the refrigerant circulation system, and then the evaporation temperature in the evaporator is increased, so that the coil temperature is increased, the generation of condensed water is reduced, and the calculated value of T1-T2 is continuously reduced until the condition T1-T2 <. Δ T2 is satisfied, the first control valve 7 is controlled to be opened, and the second control valve 8 is controlled to be closed, so that the refrigerant in the refrigerant circulating system returns to the liquid storage tank 6 again.
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 (1)
1. A control method for an air conditioner is characterized in that the air conditioner comprises an indoor heat exchanger, an outdoor heat exchanger, a compressor, an electronic expansion valve and a four-way valve, wherein the outdoor heat exchanger, the compressor, the indoor heat exchanger and the electronic expansion valve form a closed-loop refrigerant circulating system, the four-way valve can be reversed to enable the air conditioner to be in a refrigerating working condition or a heating working condition,
the air conditioner also comprises a liquid storage component, the liquid storage component is connected between the exhaust pipe and the air return pipe of the compressor, the liquid storage component is arranged to convey refrigerant to the refrigerant circulating system and recover the refrigerant in the refrigerant circulating system,
the control method comprises the following steps:
acquiring the dew point temperature of indoor air and the coil temperature of an indoor heat exchanger of the air conditioner;
calculating a difference between a dew point temperature of the indoor air and a coil temperature of the indoor heat exchanger;
comparing the difference value with a first preset value and a second preset value;
selectively conveying a refrigerant to the refrigerant circulating system according to a comparison result of the difference value and the first preset value;
selectively recycling the refrigerant in the refrigerant circulating system according to the comparison result of the difference value and the second preset value;
the second preset value is smaller than the first preset value;
the step of selectively delivering the refrigerant to the refrigerant circulation system according to the comparison result of the difference value and the first preset value comprises the following steps:
if the difference value is larger than the first preset value, a refrigerant is conveyed into the refrigerant circulating system;
if the difference value is not larger than the first preset value, the refrigerant is not conveyed to the refrigerant circulating system;
the step of selectively recycling the refrigerant in the refrigerant circulation system according to the comparison result of the difference value and the second preset value comprises the following steps:
if the difference value is smaller than the second preset value, recovering the refrigerant in the refrigerant circulating system;
and if the difference value is not less than the second preset value, the refrigerant in the refrigerant circulating system is not recycled.
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| CN201811244853.4A CN109489195B (en) | 2018-10-24 | 2018-10-24 | Control method for air conditioner and air conditioner |
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| CN109489195B true CN109489195B (en) | 2021-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111637580B (en) * | 2020-04-28 | 2022-02-01 | 宁波奥克斯电气股份有限公司 | Method for controlling refrigerating capacity of air conditioner and air conditioner |
| CN113154638B (en) * | 2021-03-22 | 2022-08-19 | 青岛海尔空调器有限总公司 | Method and device for controlling condensation prevention of air conditioner and air conditioner |
| CN114216215B (en) * | 2021-11-19 | 2023-04-25 | 珠海格力电器股份有限公司 | Antifreezing control method and device for water system and related equipment |
| CN114322235B (en) * | 2021-12-02 | 2023-08-15 | 青岛海尔空调器有限总公司 | Method and device for controlling condensation prevention of air conditioner and air conditioner |
| CN114739061B (en) * | 2022-04-26 | 2023-03-21 | 珠海格力电器股份有限公司 | Filling amount automatic matching device and method, control device and refrigeration equipment |
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