CN114543267A - Air conditioner defrosting control method and control device and air conditioner - Google Patents
Air conditioner defrosting control method and control device and air conditioner Download PDFInfo
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- CN114543267A CN114543267A CN202210205922.0A CN202210205922A CN114543267A CN 114543267 A CN114543267 A CN 114543267A CN 202210205922 A CN202210205922 A CN 202210205922A CN 114543267 A CN114543267 A CN 114543267A
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/62—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
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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
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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
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied 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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F13/02—Ducting 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
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside 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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides an air conditioner defrosting control method, an air conditioner defrosting control device and an air conditioner. The air conditioner includes: the air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas pipeline and a liquid pipeline, and further comprises a defrosting pipeline, wherein one end of the defrosting pipeline is communicated to the gas pipeline, and the other end of the defrosting pipeline is connected to the outdoor heat exchanger, and the control method comprises the following steps: judging whether the air conditioner meets a defrosting condition or not in a heating mode of the air conditioner; if the temperature of the refrigerant in the compressor is met, the high-temperature refrigerant in the compressor is controlled to flow to the indoor heat exchanger through the gas pipeline, and meanwhile the high-temperature refrigerant in the compressor is controlled to flow to the outdoor heat exchanger through the defrosting pipeline. The invention can solve the technical problems of low heating efficiency of the air conditioner and poor user experience when the air conditioner performs heating and defrosting.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner defrosting control method, an air conditioner defrosting control device and an air conditioner.
Background
The air conditioner is at the in-process of heating operation, if outdoor ambient temperature is lower, then can frost on outdoor heat exchanger fin, when defrosting outdoor heat exchanger fin under the usual condition, indoor fan can stall, and indoor heat exchanger heat exchange efficiency is lower this moment to can cause the room temperature fluctuation great, thereby reduce user experience.
In the related art, there are disadvantages: when the air conditioner is used for heating and defrosting, the heating efficiency of the air conditioner is reduced, and the user experience is further reduced.
Disclosure of Invention
The invention can solve the technical problems of low heating efficiency of the air conditioner and poor user experience when the air conditioner performs heating and defrosting.
In order to solve the above problem, an embodiment of the present invention provides a defrosting control method for an air conditioner, where the air conditioner includes: the air conditioner comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a gas pipeline and a liquid pipeline, and is characterized in that the air conditioner further comprises a defrosting pipeline, one end of the defrosting pipeline is communicated to the gas pipeline, and the other end of the defrosting pipeline is connected to the outdoor heat exchanger, and the control method comprises the following steps: judging whether the air conditioner meets a defrosting condition or not in a heating mode of the air conditioner; if the temperature of the refrigerant in the compressor is met, the high-temperature refrigerant in the compressor is controlled to flow to the indoor heat exchanger through the gas pipeline, and meanwhile the high-temperature refrigerant in the compressor is controlled to flow to the outdoor heat exchanger through the defrosting pipeline.
Compared with the prior art, the technical scheme has the following technical effects: it can be understood that, in the process of heating the air conditioner, if the outdoor environment temperature is too low, especially when the outdoor environment temperature is below 0 ℃, the fins of the outdoor heat exchanger are easy to frost, that is, when the outdoor environment temperature is low, the air conditioner meets the defrosting condition, and at this time, the fins of the outdoor heat exchanger of the air conditioner need to be defrosted; and through the setting of defrosting pipeline, can realize the defrosting to outdoor heat exchanger fin, the high temperature refrigerant in the gas pipeline can also heat the indoor environment simultaneously to make the air conditioner realize the purpose of defrosting and heating simultaneously, further reduce the fluctuation that the temperature appears in the indoor environment, improved the heating efficiency of air conditioner heating defrosting in-process, also promoted user experience simultaneously.
Further, in an embodiment of the present invention, when the air conditioner satisfies the defrosting condition, the control method further includes: acquiring an indoor coil temperature value T; according to the indoor coil temperature value T and a preset temperature value T0Judging whether the air conditioner meets the refrigerant flow regulation condition or not; and if so, controlling the air conditioner to enter a refrigerant flow regulation mode.
Compared with the prior art, the technical scheme has the following technical effects: it can be understood that, because the air conditioner is when heating the defrosting, high temperature refrigerant in the gas pipeline can flow to indoor heat exchanger and outdoor heat exchanger simultaneously, thereby the heat exchange efficiency of indoor heat exchanger can be than the heat exchange efficiency under the normal mode of heating this moment, and indoor heat exchanger's heat exchange efficiency is relevant with indoor coil pipe temperature value T, so through setting up temperature sensor in the air conditioner, acquire indoor coil pipe temperature value T by temperature sensor, the user can know the situation of heating of air conditioner according to indoor coil pipe temperature value T, further can be through the aperture of adjusting control valve, the size of refrigerant flow among the control gas pipeline, realize improving the purpose that the air conditioner heats and defrosting efficiency.
Further, in an embodiment of the present invention, the determining whether the air conditioner satisfies a refrigerant flow rate adjustment condition includes: the temperature value T of the indoor coil is more than or equal to a preset temperature value T0When the air conditioner does not meet the refrigerant flow regulation condition; the temperature value T of the indoor coil pipe is less than the preset temperature value T0And meanwhile, the air conditioner meets the refrigerant flow regulation condition.
Compared with the prior art, the technical scheme has the following technical effects: when the temperature value T of the indoor coil pipe is larger than or equal to the preset temperature value T0At this time, the current indoor coil temperature value T meets the heating requirement of the user, so that the flow of the high-temperature refrigerant does not need to be adjusted; on the contrary, the temperature value T of the indoor coil pipe is less than the preset temperature value T0At this time, it indicates that the indoor coil temperature value T is low, and the current indoor coil temperature value T is not enough to meet the heating requirement of the user, i.e. the indoor coil temperature value T is less than the preset temperature value T0The method meets the refrigerant flow regulation condition, simultaneously needs to regulate the flow of the high-temperature refrigerant, and passes through the preset temperature value T0The purpose of adjusting the indoor temperature is achieved, and user experience is further improved.
Further, in an embodiment of the present invention, the preset temperature value T0∈[34℃，38℃]。
Compared with the prior art, the technical scheme has the following technical effects: preset temperature value T0Setting at [34 deg.C, 38 deg.C]In time, hot air can be ensured to be blown out of the indoor heat exchanger, and the indoor coil temperature value T and the preset temperature value T are further subjected to comparison0The comparison of the sizes of the two parts can meet the heating requirements of users.
Further, in an embodiment of the present invention, when the air conditioner satisfies a refrigerant flow rate adjustment condition, the air conditioner enters a refrigerant flow rate adjustment mode, and controls to reduce a flow rate of a high-temperature refrigerant flowing into the defrosting pipeline; and when the air conditioner does not meet the refrigerant flow regulation condition, the high-temperature refrigerant in the defrosting pipeline maintains the current flow to defrost.
Compared with the prior art, the technical scheme has the following technical effects: when the air conditioner meets the condition of refrigerant flow adjustment, the air conditioner indicates that the flow of a high-temperature refrigerant used for heating in the air conditioner is less at the moment, and the condition that the indoor heat exchanger blows hot air cannot be guaranteed at the moment, namely the current indoor coil temperature value T cannot realize heating, the air conditioner enters a refrigerant flow adjustment mode at the moment, and the flow of the high-temperature refrigerant flowing to the outdoor heat exchanger is controlled and reduced correspondingly to increase the flow of the high-temperature refrigerant flowing to the indoor heat exchanger, so that the heating purpose is achieved.
Further, in an embodiment of the present invention, the control method further includes: periodically detecting the temperature value T of the indoor coil pipe, and judging whether the air conditioner meets the condition of quitting refrigerant flow regulation; and if so, controlling the air conditioner to exit the refrigerant flow regulation mode.
Compared with the prior art, the technical scheme has the following technical effects: the temperature of the indoor coil pipe is periodically detected, the heating and defrosting efficiency of the air conditioner is guaranteed, the comfort of the air conditioner is improved, and the user requirements are further met.
Further, in an embodiment of the present invention, the determining whether the air conditioner satisfies a defrosting condition further includes: and if not, controlling the air conditioner to continuously operate in the current heating mode.
Compared with the prior art, the technical scheme has the following technical effects: when the air conditioner does not meet the defrosting condition, the fact that the fins of the outdoor heat exchanger are not frosted at the moment is indicated, or the outdoor environment temperature is higher than 0 ℃ at the moment is indicated, the fact that the air conditioner does not meet the defrosting condition is indicated, and the air conditioner is controlled to continue to operate in the current heating mode at the moment.
Further, in an embodiment of the present invention, the air conditioner further includes a control valve disposed in the defrosting pipe; the control valve is adjusted to adjust the flow of the high-temperature refrigerant in the defrosting pipeline.
Compared with the prior art, the technical scheme has the following technical effects: the flow of the high-temperature refrigerant in the defrosting pipeline can be adjusted by adjusting the size of the opening of the control valve; the control valve can be set as a one-way valve, so that the reversing of the four-way valve of the air conditioner in a heating defrosting mode can be avoided, and the safety and the economical efficiency of the air conditioner are improved.
Further, an embodiment of the present invention further provides an air conditioner control device, where the control device executes the air conditioner defrosting control method in the foregoing embodiment, and the air conditioner control device includes: the judging module is used for judging whether the air conditioner meets defrosting conditions or not; and the control module is used for controlling the high-temperature refrigerant in the compressor to flow to the indoor heat exchanger from the gas pipeline and controlling the high-temperature refrigerant in the compressor to flow to the outdoor heat exchanger from the defrosting pipeline when the air conditioner meets the defrosting condition.
Compared with the prior art, the technical scheme has the following technical effects: through the setting of judgment module to whether make the user know whether will defrost the air conditioner, further pass through control module, adjust the flow of the high temperature refrigerant in the pipeline that defrosts, can make the air conditioner realize the purpose of defrosting and heating simultaneously, thereby promoted the travelling comfort of air conditioner, also promoted user experience simultaneously.
Further, an embodiment of the present invention further provides an air conditioner, where the air conditioner includes a computer-readable storage medium storing a computer program and a processor, and when the computer program is read by the processor, the air conditioner implements the air conditioner defrosting control method according to the above embodiment.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is as follows: in the process of executing the control method of the above embodiment, the air conditioner has all the beneficial effects brought to the air conditioner when the control method is executed, and details are not repeated here.
In summary, after the technical scheme of the invention is adopted, the following technical effects can be achieved:
i) it can be understood that, in the process of heating the air conditioner, if the outdoor environment temperature is too low, especially when the outdoor environment temperature is below 0 ℃, the fins of the outdoor heat exchanger are easy to frost, that is, when the outdoor environment temperature is low, the air conditioner meets the defrosting condition, and at this time, the fins of the outdoor heat exchanger of the air conditioner need to be defrosted; the arrangement of the defrosting pipeline can realize defrosting of the outdoor heat exchanger fins, and meanwhile, the high-temperature refrigerant in the gas pipeline can also heat the indoor environment, so that the air conditioner can simultaneously realize the purposes of defrosting and heating, further reduce the temperature fluctuation in the indoor environment, improve the heating efficiency in the heating and defrosting process of the air conditioner, and simultaneously improve the user experience;
ii) a predetermined temperature value T0Setting at [34 deg.C, 38 deg.C]In time, hot air can be ensured to be blown out of the indoor heat exchanger, and the indoor coil temperature value T and the preset temperature value T are further subjected to comparison0The size comparison between the two can meet the heating requirement of the user;
and iii) the temperature of the indoor coil is periodically detected, so that the heating and defrosting efficiency of the air conditioner is ensured, the comfort of the air conditioner is improved, and the user requirements are further met.
Description of the drawings:
fig. 1 is a schematic diagram of a defrosting control method for an air conditioner according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of an air conditioner.
Fig. 3 is a flow chart illustrating a defrosting control method of an air conditioner.
Fig. 4 is a schematic diagram of a refrigerant flow rate adjustment mode.
Description of reference numerals:
100-an air conditioner; 10-a compressor; a 20-four-way valve; 30-an outdoor heat exchanger; 40-indoor heat exchanger; 50-a gas pipeline; 60-a liquid conduit; 70-defrosting the pipeline; 71-control valve.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
[ first embodiment ] A method for manufacturing a semiconductor device
Preferably, referring to fig. 1 to 4, a first embodiment of the present invention provides an air conditioner defrosting control method capable of simultaneously defrosting fins of an outdoor heat exchanger 30 and heating an indoor environment in a heating and defrosting mode of an air conditioner 100, wherein the air conditioner 100 includes: a compressor 10, a four-way valve 20, an outdoor heat exchanger 30, an indoor heat exchanger 40, and a gas pipe 50 and a liquid pipe 60 connected between the outdoor heat exchanger 30 and the indoor heat exchanger 40; wherein, the gas pipeline 50 is connected between the four-way valve 20 and the indoor heat exchanger 40, and the liquid pipeline 60 is arranged between the indoor heat exchanger 40 and the outdoor heat exchanger 30; the air conditioner 100 further includes a defrosting duct 70, and the defrosting duct 70 is disposed between the gas duct 50 and the outdoor heat exchanger 30, and one end of the defrosting duct 70 is communicated to the gas duct 50, and the other end is connected to the outdoor heat exchanger 30; specifically, the control method includes:
s10: judging whether the air conditioner 100 meets a defrosting condition or not in the heating mode of the air conditioner 100;
s20: if the temperature difference is satisfied, the high-temperature refrigerant in the compressor 10 is controlled to flow from the gas pipe 50 to the indoor heat exchanger 40, and the high-temperature refrigerant in the compressor 10 is controlled to flow from the defrost pipe 70 to the outdoor heat exchanger 30.
Preferably, in S10, while the air conditioner 100 is operating to produce heat, it is determined whether the air conditioner 100 satisfies a defrosting condition; it can be understood that, in the process of heating the air conditioner 100, if the outdoor environment temperature is too low, for example, when the outdoor environment temperature is below 0 ℃, the fins of the outdoor heat exchanger 30 are prone to frost formation, and at this time, the air conditioner 100 meets the defrosting condition; if the defrosting process is not performed in time, the operation efficiency of the air conditioner is affected, in the prior art, when the air conditioner 100 performs defrosting, the air conditioner 100 is switched from a heating mode to a cooling mode, so that the fins are defrosted through condensation heat exchange of the outdoor heat exchanger 30, and when the air conditioner 100 performs defrosting, an indoor fan stops rotating, so that the temperature in the indoor environment fluctuates greatly; in the embodiment of the present invention, by setting the defrosting pipe 70, the outdoor heat exchanger 30 can be defrosted and the indoor environment can be heated, so that the temperature in the indoor environment is reduced from being greatly fluctuated, and the user experience is further improved.
Specifically, in S20, when the air conditioner 100 meets the defrosting condition, the gas pipeline 50 is communicated with the outdoor heat exchanger 30 due to the arrangement of the defrosting pipeline 70, and a part of the high-temperature, high-pressure, and high-temperature refrigerant compressed by the compressor 10 flows from the gas pipeline 50 to the defrosting pipeline 70 and further flows to the outdoor heat exchanger 30, so as to defrost the fins of the outdoor heat exchanger 30; meanwhile, in order to avoid a large fluctuation in the temperature of the indoor environment, while the air conditioner 100 performs defrosting, another part of the high-temperature, high-pressure, and high-temperature refrigerant compressed by the compressor 10 directly flows into the indoor heat exchanger 40 through the gas pipe 50, thereby heating the indoor environment.
It should be noted that in S20, when the air conditioner 100 meets the defrosting condition and the high-temperature refrigerant in the compressor 10 is controlled to flow from the gas pipeline 50 to the indoor heat exchanger 40, at this time, the indoor fan continues to operate at a low wind level, the indoor heat exchanger 40 is in a working state, and the indoor heat exchanger 40 heats the indoor environment, so that the air conditioner 100 heats the indoor environment while defrosting is performed, and the comfort level of the user is improved; meanwhile, in order to ensure the defrosting efficiency of the air conditioner 100, the flow rate of the high-temperature refrigerant flowing to the defrosting pipe 70 through the gas pipe 50 is greater than the flow rate of the high-temperature refrigerant flowing to the indoor heat exchanger 40.
For example, about 80% of the high-temperature refrigerant in the gas pipeline 50 flows into the defrosting pipeline 70 for defrosting the fins of the outdoor heat exchanger 30, and about 20% of the high-temperature refrigerant in the gas pipeline 50 flows into the indoor heat exchanger 40 for heating the indoor environment, but of course, the flow rate of the high-temperature refrigerant flowing into the defrosting pipeline 70 can be controlled to be about 70%, and the flow rate of the high-temperature refrigerant flowing into the indoor heat exchanger 40 correspondingly can be controlled to be about 30%; further, the flow rate of the high-temperature refrigerant may be set to other values, which may be determined according to the temperatures of the outdoor environment and the indoor environment and the heating efficiency of the air conditioner 100, and is not limited to the limitation of the flow rate in this embodiment.
Further, the air conditioner 100 further includes: the control valve 71; the control valve 71 is arranged on the defrosting pipeline 70, and when the air conditioner 100 enters a heating and defrosting mode, the flow of the high-temperature refrigerant in the defrosting pipeline 70 can be adjusted by adjusting the opening size of the control valve 71; the control valve 71 may be a check valve, that is, in the heating and defrosting mode of the air conditioner 100, the high-temperature refrigerant can flow from the gas pipeline 50 to the outdoor heat exchanger 30 by adjusting the check valve; the control valve 71 is set as a check valve, which can prevent the four-way valve from reversing in the heating and defrosting mode of the air conditioner 100, thereby improving the safety and economy of the air conditioner 100.
Preferably, when the air conditioner 100 satisfies the defrosting condition, the control method further includes:
s30: acquiring an indoor coil temperature value T;
s40: according to the indoor coil temperature value T and the preset temperature value T0The air conditioner 100 is judged whether to meet the refrigerant flow regulation condition or not;
s50: if yes, the air conditioner 100 is controlled to enter a refrigerant flow rate adjusting mode.
It can be understood that, when the air conditioner 100 performs defrosting during heating, the high-temperature refrigerant in the gas pipeline 50 flows to the indoor heat exchanger 40 and the outdoor heat exchanger 30 simultaneously, so that the heat exchange efficiency of the indoor heat exchanger 40 is lower than that in the normal heating mode, and the heat exchange efficiency of the indoor heat exchanger 40 is related to the indoor coil temperature value T, so in S30, the temperature sensor is disposed in the air conditioner 100, the temperature sensor periodically obtains the indoor coil temperature value T, and a user can know the heating efficiency of the air conditioner 100 through the obtained indoor coil temperature value T, and further can adjust the opening degree of the control valve 71 to control the flow rate of the refrigerant in the gas pipeline 50, thereby achieving the purpose of improving the heating and defrosting efficiencies of the air conditioner 100.
Preferably, in S40 and S50, after the indoor coil temperature T is acquired, the temperature T is compared with a preset temperature T0The comparison between the sizes of the refrigerant flow rate and the refrigerant flow rate can further determine whether the air conditioner 100 meets the refrigerant flow rate adjustment condition, and then adjust the high-temperature refrigerant flow rate in the gas pipeline 50 of the air conditioner 100, so as to meet the requirements of the user on defrosting and heating simultaneously.
Specifically, the determining whether the air conditioner 100 satisfies the refrigerant flow rate adjustment condition includes: the temperature value T of the indoor coil is more than or equal to the preset temperature value T0When the air conditioner 100 does not meet the refrigerant flow regulation condition, the temperature value T of the indoor coil pipe is less than the preset temperature value T0Meanwhile, the air conditioner 100 meets the refrigerant flow regulation condition; when the temperature value T of the indoor coil pipe is larger than or equal to the preset temperature value T0At this time, it is indicated that the current indoor coil temperature value T meets the heating requirement of the user, so that the flow of the high-temperature refrigerant does not need to be adjusted, that is, the air conditioner 100 does not meet the refrigerant flow adjusting condition at this time; on the contrary, the temperature value T of the indoor coil pipe is less than the preset temperature value T0At this time, it indicates that the indoor coil temperature value T is low, and the current indoor coil temperature value T is not enough to meet the heating requirement of the user, i.e. the indoor coil temperature value T is less than the preset temperature value T0In the process, the refrigerant flow regulation condition is met, and the flow of the high-temperature refrigerant needs to be regulated.
Further, when the air conditioner 100 meets the refrigerant flow rate adjustment condition, the air conditioner 100 enters a refrigerant flow rate adjustment mode, and controls to reduce the flow rate of the high-temperature refrigerant flowing into the defrosting pipeline 70; when the air conditioner 100 does not satisfy the refrigerant flow rate adjustment condition, the high-temperature refrigerant in the defrosting pipe 70 continues to maintain the current flow rate for defrosting.
Preferably, the preset temperature value T0∈[34℃，38℃]Wherein a preset temperature value T0The temperature can be selected to be 36 ℃; for example, the preset temperature value T0Selecting 36 ℃, and when the indoor coil temperature value T obtained by the temperature sensor is greater than or equal to 36 ℃, thus ensuring that the indoor heat exchanger 40 blows hot air, and the current indoor coil temperature value T can be manufacturedAt this time, the flow rate of the high-temperature refrigerant does not need to be adjusted, and the high-temperature refrigerant in the air conditioner 100 is controlled to flow to the outdoor heat exchanger 30 and the indoor heat exchanger 40 at the current flow rate, that is, the high-temperature refrigerant in the defrosting pipe 70 and the gas pipe 50 continues to operate for heating and defrosting at the current flow rate.
Further, when the indoor coil temperature value T is less than 36 ℃, it indicates that the flow rate of the high-temperature refrigerant used for heating in the air conditioner 100 is low, and it cannot be ensured that hot air is blown out of the indoor heat exchanger 40 at this time, and the current indoor coil temperature value T cannot realize heating, the flow rate of the high-temperature refrigerant flowing to the outdoor heat exchanger 30 is controlled to be reduced correspondingly to increase the flow rate of the high-temperature refrigerant flowing to the indoor heat exchanger 40, so as to meet the heating requirement of the user.
Preferably, in S50, after the air conditioner 100 enters the refrigerant flow rate adjustment mode, the size of the opening of the control valve 71 is adjusted during the process of adjusting the refrigerant flow rate of the air conditioner 100; for example, when the air conditioner 100 enters the defrosting condition, 80% of the high-temperature refrigerant defrosts the fins of the outdoor heat exchanger 30, and 20% of the high-temperature refrigerant heats the indoor environment, if the temperature T of the indoor coil is less than the preset temperature T0At this time, the air conditioner 100 satisfies the refrigerant flow rate adjustment condition, and at this time, the flow rate of the high-temperature refrigerant in the gas pipe 50 and the defrosting pipe 70 needs to be adjusted, and when the opening size of the control valve 71 is adjusted, the flow rate of the high-temperature refrigerant in the defrosting pipe 70 is reduced.
For example, when the flow rate of the high-temperature refrigerant is reduced, the flow rate can be reduced by 10% each time, that is, after adjustment, 70% of the high-temperature refrigerant defrosts fins of the outdoor heat exchanger 30, and during heating of 30% of the indoor environment of the high-temperature refrigerant; of course, the flow rate of the high-temperature refrigerant may be reduced by adjusting 5%, 15% or other values at a time, and specifically, the flow rate may be determined according to the temperatures of the outdoor environment and the indoor environment and the heating efficiency of the air conditioner 100, and is not limited to the limitations of the adjustment parameters in this embodiment.
Further, the control method further includes: periodic detection indoor discA pipe temperature value T, and whether the air conditioner 100 meets the condition of exiting refrigerant flow regulation is judged; if yes, controlling the air conditioner 100 to exit the refrigerant flow regulation mode; in order to avoid the situation that when the flow of the high-temperature refrigerant is adjusted, the flow of the high-temperature refrigerant flowing to the indoor heat exchanger 40 is too much, the flow of the high-temperature refrigerant flowing to the outdoor heat exchanger 30 is less, and defrosting cannot be completed, when the air conditioner 100 meets the refrigerant flow adjusting condition, after the flow of the high-temperature refrigerant is adjusted, the temperature value T of the indoor coil is periodically detected until the temperature value T of the indoor coil reaches the preset temperature value T0Until the end; the indoor coil temperature value T can be set to be detected every 3min, and of course, other times can be set, which is not limited to the limitation of the interval detection time in this embodiment.
Preferably, in S10, the determining whether the air conditioner 100 satisfies the defrosting condition further includes:
s21: if not, the air conditioner 100 is controlled to continue to operate in the current heating mode.
Preferably, in S21, when the air conditioner 100 does not satisfy the defrosting condition, it indicates that the fins of the outdoor heat exchanger 30 are not frosted, or when the outdoor environment temperature is above 0 ℃, it indicates that the air conditioner 100 does not satisfy the defrosting condition, i.e., the air conditioner 100 is controlled to continue to operate in the current heating mode.
[ second embodiment ]
A second embodiment of the present invention provides an air conditioner control device that executes the air conditioner defrosting control method described in the above embodiment, and the control device includes:
a judging module, configured to judge whether the air conditioner 100 meets a defrosting condition;
and a control module, configured to control a high-temperature refrigerant in the compressor 10 to flow from the gas pipeline 50 to the indoor heat exchanger 40 and control a high-temperature refrigerant in the compressor 10 to flow from the defrosting pipeline 70 to the outdoor heat exchanger 30 when the air conditioner 100 meets a defrosting condition.
Preferably, through the setting of the judging module, thereby enabling the user to know whether to defrost the air conditioner 100, further enabling the user to adjust the flow rate of the high-temperature refrigerant in the defrosting pipeline 70 through the control module, and enabling the air conditioner 100 to achieve the purposes of defrosting and heating simultaneously, thereby improving the comfort of the air conditioner and also improving the user experience.
[ third embodiment ]
A third embodiment of the present invention provides an air conditioner, which includes a computer-readable storage medium storing a computer program and a processor, wherein when the computer program is read by the processor, the defrosting control method of the air conditioner in the above-described embodiments is implemented; when the air conditioner executes the control method in the above embodiment, the air conditioner has all the beneficial effects brought by the execution of the control method in the above embodiment, and details are not repeated here.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An air conditioner defrost control method, the air conditioner (100) comprising: compressor (10), outdoor heat exchanger (30), indoor heat exchanger (40) and gas (50) and liquid (60) ducts, characterized in that the air conditioner (100) further comprises a defrost duct (70), and one end of the defrost duct (70) is connected to the gas duct (50) and the other end is connected to the outdoor heat exchanger (30), the control method comprising:
the method comprises the steps that under the heating mode of the air conditioner (100), whether the air conditioner (100) meets defrosting conditions or not is judged;
if the temperature difference is met, the high-temperature refrigerant in the compressor (10) is controlled to flow to the indoor heat exchanger (40) from the gas pipeline (50), and meanwhile, the high-temperature refrigerant in the compressor (10) is controlled to flow to the outdoor heat exchanger (30) from the defrosting pipeline (70).
2. The air conditioner defrost control method of claim 1, wherein when the defrost condition is satisfied by the air conditioner (100), the control method further comprises:
acquiring an indoor coil temperature value T;
according to the indoor coil temperature value T and a preset temperature value T0Judging whether the air conditioner (100) meets the refrigerant flow regulation condition or not;
and if so, controlling the air conditioner (100) to enter a refrigerant flow regulation mode.
3. The air conditioner defrost control method according to claim 2, wherein said determining whether the air conditioner (100) satisfies a refrigerant flow rate adjustment condition comprises:
the temperature value T of the indoor coil is more than or equal to a preset temperature value T0When the air conditioner (100) does not meet the refrigerant flow regulation condition;
the temperature value T of the indoor coil pipe is less than the preset temperature value T0And meanwhile, the air conditioner (100) meets the refrigerant flow regulation condition.
4. The defrosting control method of an air conditioner according to claim 2, wherein the preset temperature value T is set to be a predetermined temperature value T0∈[34℃，38℃]。
5. The air conditioner defrosting control method according to claim 3, wherein when the air conditioner (100) satisfies a refrigerant flow rate adjusting condition, the air conditioner (100) enters a refrigerant flow rate adjusting mode and controls to reduce the flow rate of the high-temperature refrigerant flowing into the defrosting duct (70); and when the air conditioner (100) does not meet the refrigerant flow regulation condition, the high-temperature refrigerant in the defrosting pipeline (70) maintains the current flow to defrost.
6. The air conditioner defrost control method of claim 3, further comprising:
periodically detecting the temperature value T of the indoor coil pipe, and judging whether the air conditioner (100) meets the condition of quitting refrigerant flow regulation;
and if so, controlling the air conditioner (100) to exit the refrigerant flow regulation mode.
7. The air conditioner defrost control method of claim 1, wherein said determining whether the air conditioner (100) satisfies a defrost condition further comprises:
if not, controlling the air conditioner (100) to continue to operate in the current heating mode.
8. The air conditioner defrosting control method according to any one of claims 1 to 7, wherein the air conditioner (100) further comprises a control valve (71) provided to the defrosting duct (70);
the control valve (71) is adjusted to adjust the flow rate of the high-temperature refrigerant in the defrosting pipeline (70).
9. An air conditioner control device characterized in that the control device executes the air conditioner defrosting control method according to any one of claims 1 to 8, the control device comprising:
the judging module is used for judging whether the air conditioner (100) meets a defrosting condition or not;
and the control module is used for controlling the high-temperature refrigerant in the compressor (10) to flow to the indoor heat exchanger (40) from the gas pipeline (50) and controlling the high-temperature refrigerant in the compressor (10) to flow to the outdoor heat exchanger (30) from the defrosting pipeline (70) when the air conditioner (100) meets the defrosting condition.
10. An air conditioner (100) comprising a computer readable storage medium storing a computer program and a processor, the computer program when read by the processor implementing the air conditioner defrost control method according to any one of claims 1-8.
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| CN115790055A (en) * | 2022-11-10 | 2023-03-14 | 宁波奥克斯电气股份有限公司 | Defrosting control method, control device and air conditioner |
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