CN110736204A - Control method and control device for defrosting of air conditioner and air conditioner - Google Patents
Control method and control device for defrosting of air conditioner and air conditioner Download PDFInfo
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- CN110736204A CN110736204A CN201910912812.6A CN201910912812A CN110736204A CN 110736204 A CN110736204 A CN 110736204A CN 201910912812 A CN201910912812 A CN 201910912812A CN 110736204 A CN110736204 A CN 110736204A
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- 238000010257 thawing Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000003507 refrigerant Substances 0.000 claims abstract description 112
- 238000010438 heat treatment Methods 0.000 claims abstract description 80
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 230000001502 supplementing effect Effects 0.000 claims abstract description 8
- 230000001276 controlling effect Effects 0.000 claims description 17
- 239000013589 supplement Substances 0.000 claims description 16
- 230000000875 corresponding effect Effects 0.000 claims description 10
- 230000002596 correlated effect Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 8
- 230000006870 function Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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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
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
- F25B47/022—Defrosting cycles hot gas defrosting
- F25B47/025—Defrosting cycles hot gas defrosting by reversing the cycle
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Thermal Sciences (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The control method provided by the embodiment of the disclosure can control the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the refrigerant flow of the refrigerant circulation loop according to the outdoor environment temperature when the compressor is supplemented with air according to the air conditioner running bypass defrosting mode, not only can directly adjust the temperature and the flow of the refrigerant which becomes gaseous after being heated and is further divided out for supplementing air, but also can improve the temperature of the refrigerant flowing into an outdoor heat exchanger to improve the defrosting effect, thereby solving the problem that the defrosting capability of the air conditioner is reduced along with time.
Description
Technical Field
The present application relates to the field of air conditioner defrosting technologies, and for example, to control methods and control devices for air conditioner defrosting, and an air conditioner.
Background
With the development of science and technology, an air conditioner, which is kinds of necessary electrical equipment for ordinary people in daily life, has been gradually developed from the first single-cold machine type to an advanced machine type capable of having more functions of cooling, heating and defrosting, and here, important problems inevitably faced by air conditioning products operating in low-temperature areas or under windy and snowy weather conditions are the frosting problem of an air conditioner outdoor unit, an outdoor heat exchanger of the outdoor unit functions as an evaporator for absorbing heat from the outdoor environment, and is affected by the temperature and humidity of the outdoor environment in winter, much frost is easily condensed on the outdoor heat exchanger, and when the frost is condensed to , the heating capacity of the air conditioner is gradually lowered, so that in order to ensure the heating effect and avoid the frost from being condensed, the defrosting function gradually becomes important research subjects in the air conditioning field.
is a reverse circulation defrosting mode, when the air conditioner carries out reverse circulation defrosting, the high temperature refrigerant discharged by the compressor firstly flows through the outdoor heat exchanger to melt the frost by the heat of the refrigerant, and secondly, the bypass defrosting mode can convey the high temperature refrigerant discharged by the compressor to the outdoor heat exchanger through a bypass branch which is separately arranged when the air conditioner normally heats, and the purpose of melting the frost by the heat of the refrigerant can also be realized.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
in the reverse-cycle defrosting mode, because the indoor heat exchanger is in a heat absorption state, the modes of closing a fan, closing a small air deflector and the like are mostly adopted to inhibit the heat absorption efficiency of the indoor heat exchanger in order to avoid discomfort of users caused by indoor temperature reduction under the heating working condition, under the condition, a large amount of refrigerants directly flow to the outdoor for heat exchange for defrosting, the heat-released refrigerants are changed from a gaseous state to a liquid state, meanwhile, the refrigerant evaporation function of the indoor heat exchanger is inhibited, so that more and more liquid refrigerants and less gaseous refrigerants are contained in an air-conditioning refrigerant circulation loop, the temperature and the flow of returned air and sucked air of the compressor are reduced due to steps, and finally the defrosting capacity of the whole air conditioner is reduced along with time.
Disclosure of Invention
This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments, but is intended to be a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides control methods and control devices for air conditioner defrosting and an air conditioner, so as to solve the technical problem that defrosting capacity of a reverse cycle defrosting mode is reduced along with time in the related art.
In embodiments, a control method for defrosting an air conditioner includes:
acquiring the outdoor environment temperature under the condition that the air conditioner enters a reverse circulation defrosting mode and air is supplied to the compressor; the air supplement comprises controlling at least part of the refrigerant circulation loop to flow back to the compressor along an air supplement branch through the gas-liquid separator;
and controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the adjusting operation of the refrigerant flow of the refrigerant circulating loop according to the outdoor environment temperature.
In embodiments, a control apparatus for air conditioner defrosting includes a processor and a memory storing program instructions, the processor configured to execute, upon execution of the program instructions, the control method for air conditioner defrosting as in the previous embodiments .
In embodiments, an air conditioner includes:
the refrigerant circulating loop is formed by connecting an outdoor heat exchanger, an indoor heat exchanger, a throttling device and a compressor through refrigerant pipelines;
the air supplement branch, wherein the end is communicated with an air supplement port of the compressor, and the end is communicated with a gas-liquid separator arranged between the indoor heat exchanger and the outdoor heat exchanger;
the heating device is arranged on the refrigerant liquid inlet pipeline of the gas-liquid separator in the reverse circulation defrosting mode and is configured to heat the refrigerant flowing through the refrigerant liquid inlet pipeline;
the control device for defrosting the air conditioner, as in the embodiments, is electrically connected with the control valve and the heating device.
The control method and device for defrosting of the air conditioner and the air conditioner provided by the embodiment of the disclosure can achieve the following technical effects:
the control method for defrosting of the air conditioner, provided by the embodiment of the disclosure, can control the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the refrigerant flow of the refrigerant circulation loop according to the outdoor environment temperature when the compressor is supplied with air according to the bypass defrosting mode of the air conditioner, can directly adjust the temperature and the flow of the refrigerant which becomes gaseous after being heated and is then divided to be used for supplying air, and can also improve the temperature of the refrigerant flowing into the outdoor heat exchanger to improve the defrosting effect, thereby effectively reducing the problem that the defrosting capacity of the air conditioner is reduced along with the time caused by the bypass defrosting mode.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
exemplary embodiments are illustrated by corresponding drawings, which are not to be construed as limiting the embodiments, in which elements having the same reference number designation are illustrated as similar elements, and in which:
fig. 1 is a schematic flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a control device for defrosting an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure.
Detailed Description
In the following description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments, however, or more embodiments may be practiced without these details.
Fig. 1 is a schematic flow chart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure.
As shown in FIG. 1, control methods for defrosting of an air conditioner are provided in the embodiments of the present disclosure, which can be used to solve the problem that the defrosting capability of the air conditioner gradually decreases when the air conditioner operates in a defrosting mode under rainy or snowy or low-temperature and severe cold conditions, and in the embodiments, the main flow steps of the control method include:
s101, under the condition that the air conditioner enters a reverse cycle defrosting mode and air is supplied to a compressor, acquiring the outdoor environment temperature;
in the embodiment of the disclosure, the reverse-circulation defrosting mode is to control the refrigerant in the refrigerant circulation loop of the air conditioner to flow in the same flow direction as the heating mode, at this time, the high-temperature refrigerant discharged by the compressor firstly flows through the outdoor heat exchanger, and the heat carried by the refrigerant can be conducted to the outdoor heat exchanger, so that the frost condensed on the outer surface of the outdoor heat exchanger can absorb heat to melt, thereby achieving the purpose of defrosting the outdoor heat exchanger.
In the embodiment of the present disclosure, the air is supplemented to the compressor in step S101, and the temperature and the flow rate of the gaseous refrigerant in the refrigerant flowing back to the compressor can be increased by the way of supplementing air, so that the air supplementing operation applied to the defrosting process and the heating operation in the above embodiment can jointly ensure the defrosting capacity of the reverse cycle defrosting mode, so that a better defrosting effect can be achieved when the air conditioner operates the reverse cycle defrosting mode.
Optionally, the air conditioner is provided with an air supplement branch, wherein the end of the air conditioner is communicated with an air supplement port of the compressor, the end of the air conditioner is communicated with a gas-liquid separator arranged between the indoor heat exchanger and the outdoor heat exchanger, and the air supplement branch is provided with a control valve, so that the air supplement operation of the compressor in the step S101 can be executed through the air supplement branch and relevant accessories thereof, and the air supplement comprises that at least part of the refrigerant circulation loop flows back to the compressor along the air supplement branch through the gas-liquid separator.
Here, the outdoor ambient temperature may be obtained by setting an temperature sensor of the outdoor unit of the air conditioner, which can be used to detect the real-time temperature of the outdoor environment where the outdoor unit is located.
And S102, controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the adjustment operation of the refrigerant flow of the refrigerant circulating loop according to the outdoor environment temperature.
In the embodiment of the disclosure, by heating the liquid refrigerant of the gas-liquid separator, part of the liquid refrigerant which is heat-released and liquefied in the outdoor heat exchanger in the reverse cycle defrosting mode can absorb heat and vaporize again before flowing into the gas-liquid separator, so that the temperature and the flow of the gaseous refrigerant in the refrigerant which flows back to the compressor through the gas supplementing branch are changed; under the condition, the flow rate of the refrigerant which is divided to the air supply branch by the gas-liquid separator can be larger than or equal to the air supply flow rate through the heating operation of the liquid inlet refrigerant of the gas-liquid separator, so that the requirements for improving the compression performance of the compressor and the defrosting performance of the air conditioner are met.
In , the air conditioner is provided with a heating device at the refrigerant inlet line of the gas-liquid separator in the reverse cycle defrosting mode, the heating device is configured to controllably heat the refrigerant flowing through the refrigerant inlet line, and thus the heating operation of the heating device is controlled to be turned on in step S102.
In the embodiment, the heating device is an electromagnetic heating device that heats the refrigerant pipeline by using the principle of electromagnetic induction heating, and then conducts heat to the refrigerant flowing through the refrigerant pipeline by using the refrigerant pipeline, so as to heat the refrigerant.
The electromagnetic heating device mainly comprises an induction coil and a power supply module, wherein the induction coil is wound on the refrigerant pipeline section, and the power supply module can provide alternating current for the induction coil; when the induction coil is electrified, alternating current flowing through the induction coil generates an alternating magnetic field passing through the refrigerant pipe section, and the alternating magnetic field can generate eddy currents in the refrigerant pipe section, so that the heating and warming effects can be realized by means of the energy of the eddy currents.
It should be understood that the type of the heating device for heating the refrigerant is not limited to the above electromagnetic heating device, and other types of heating devices capable of directly or indirectly heating the refrigerant in the related art may also apply the technical solution of the present application and are covered by the protection scope of the present application.
Optionally, a throttling device is disposed on the refrigerant circulation loop in the embodiment of the disclosure, and the throttling device may be used to control the adjustment of the refrigerant flow flowing through the refrigerant circulation loop. Therefore, in step S102, the flow rate opening of the throttle device is adjusted according to the outdoor temperature.
Alternatively, the throttle device may be an electronic expansion valve, or another valve having an opening degree adjusting function as well.
In another embodiment , in the refrigerant circulation circuit using the capillary tube as the throttling device, since the capillary tube itself does not have a flow rate adjusting function, a electronic expansion valve may be added to the refrigerant circulation circuit to adjust the flow rate opening of the refrigerant circulation circuit through the electronic expansion valve.
The control method for defrosting of the air conditioner, provided by the embodiment of the disclosure, can control the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the refrigerant flow of the refrigerant circulation loop according to the outdoor environment temperature when the compressor is supplied with air according to the bypass defrosting mode of the air conditioner, can directly adjust the temperature and the flow of the refrigerant which becomes gaseous after being heated and is then divided to be used for supplying air, and can also improve the temperature of the refrigerant flowing into the outdoor heat exchanger to improve the defrosting effect, thereby effectively reducing the problem that the defrosting capacity of the air conditioner is reduced along with the time caused by the bypass defrosting mode.
In alternative embodiments, the controlling the heating operation of the liquid refrigerant of the gas-liquid separator according to the outdoor environment temperature includes searching corresponding heating parameters from the association relationship according to the outdoor environment temperature, and controlling the heating operation according to the heating parameters.
Under the condition of controlling the heating operation according to the heating parameters, the flow of the refrigerant which is divided to the air supplementing branch by the gas-liquid separator is greater than or equal to the target air supplementing flow. In the embodiment of the disclosure, the main purpose is to improve the compression performance of the compressor, and therefore the main function of the heating operation control mode is to make the actual make-up air flow be greater than or equal to the target make-up air flow.
Optionally, the heating parameter comprises a heating rate or a heating time period.
, including or more outdoor ambient temperature and heating parameter relationships, exemplary alternative outdoor ambient temperature Tp and heating parameter relationships are shown in Table 1, as shown in the following table,
TABLE 1
| Tp (unit:. degree.C.) | Heating Rate (Unit:. degree. C/min) | Heating time (unit: min) |
| a1＜Tp≤a2 | v11 | t11 |
| a2＜Tp≤a3 | v12 | t12 |
| a3＜Tp | v13 | t13 |
In the corresponding relation, the heating rate and the outdoor environment temperature are positively correlated, and the heating time length and the outdoor environment temperature are positively correlated. That is, the worse the current outdoor condition is, the more the flow rate of the gaseous refrigerant that needs to be supplemented to the compressor is required, so the heating rate and the heating time period are set to be higher values to increase the amount of the gaseous refrigerant generated by vaporization after heating.
Therefore, when the heating operation of the liquid-in-refrigerant of the gas-liquid separator is controlled in step S102, the heating parameter may be determined according to the outdoor ambient temperature in step S101, and then the heating operation may be adjusted according to the heating parameter.
In alternative embodiments, the controlling the adjustment operation of the refrigerant flow rate of the refrigerant circulation loop according to the outdoor environment temperature includes searching a corresponding flow rate parameter from the second correlation according to the outdoor environment temperature, and controlling the adjustment operation according to the flow rate parameter.
The coil temperature of the indoor heat exchanger is greater than or equal to the target coil temperature with the adjustment operation controlled according to the flow parameter. The embodiment of the disclosure mainly aims to ensure that the indoor environment cannot be lowered too much or too fast in the defrosting process of the air conditioner, and the coil temperature of the indoor heat exchanger can reflect the heat exchange efficiency between the indoor heat exchanger and the indoor environment, so that the main function of adjusting the flow according to the flow parameters is to enable the actual coil temperature of the indoor heat exchanger to be greater than or equal to the target coil temperature.
The second correlation includes or more corresponding relationships between outdoor ambient temperature and flow rate parameter, for example, alternative corresponding relationships between outdoor ambient temperature Tp and flow rate parameter are shown in table 2, as shown in the following table,
TABLE 2
| Tp (unit:. degree.C.) | Flow parameter (Unit: L/min) |
| b1＜Tp≤b2 | q11 |
| b2＜Tp≤b3 | q12 |
| b3＜Tp | q13 |
In the corresponding relation, the flow parameter and the outdoor environment temperature are positively correlated. That is, the worse the current outdoor working condition is, the larger the set value of the refrigerant flow of the refrigerant circulation loop is, so as to improve the refrigerant flow flowing into the indoor heat exchanger through the refrigerant circulation loop, and prevent the coil temperature of the indoor heat exchanger from being too low to influence the comfort of the indoor environment.
Therefore, when the adjustment operation of the refrigerant flow rate of the refrigerant circulation circuit is controlled in step S102, the flow rate parameter may be determined according to the outdoor ambient temperature in step S101, and then the flow rate adjustment operation may be performed according to the flow rate parameter.
In , in step S102, the flow rate opening of the throttling device provided in the refrigerant circulation circuit is adjusted according to the flow rate parameter.
in some optional embodiments, the control method for defrosting of an air conditioner further includes, when the air conditioner runs in the reverse cycle defrosting mode, if a defrosting exit condition is met, controlling to exit the reverse cycle defrosting mode, and after heating continues for a set time period, exiting heating.
Here, when it is determined that the defrosting exit condition is satisfied, it indicates that the defrosting of the outdoor heat exchanger by the air conditioner is completed, and no frost or only a small amount of frost is formed on the outdoor heat exchanger of the air conditioner, so that the reverse cycle defrosting mode is controlled to exit, so as to avoid that the normal heating function of the indoor environment by the air conditioner is affected due to too much time occupied by the reverse cycle defrosting mode.
In the embodiment of the present disclosure, after exiting the reverse cycle defrost mode in , the air conditioner switches back to the heating mode again, so that the refrigerant flow directions in the refrigerant circulation circuit before and after switching are opposite, and in the embodiment of the present disclosure, after exiting the reverse cycle defrost mode, before switching back to the heating mode again, the heating is continuously maintained for a set time period, so that the refrigerant flowing in the flow direction defined by the reverse cycle defrost mode can flow back to the compressor at a higher temperature before the mode switching, which not only can increase the temperature of the refrigerant for heating initially discharged by the compressor after switching back to the heating mode, but also can effectively avoid the problems of pipeline vibration and the like caused by the collision of the flow directions of different refrigerants when the two modes are switched.
At , in alternative embodiments, the control may stop charging the compressor when the air conditioner exits the reverse cycle defrost mode.
In still other embodiments, the control stops the air supply to the compressor when the set time is reached, so that the air conditioner can continue to maintain the air supply operation to the compressor for the set time to further steps to improve the compression performance of the compressor when the heating mode is switched.
Fig. 2 is a schematic structural diagram of a control device for defrosting an air conditioner according to an embodiment of the present disclosure.
The embodiment of the present disclosure provides control devices for defrosting of an air conditioner, the structure of which is shown in fig. 2, including:
a processor (processor)200 and a memory (memory)201, and may further include a Communication Interface (Communication Interface)202 and a bus 203. The processor 200, the communication interface 202 and the memory 201 can communicate with each other through the bus 203. The communication interface 202 may be used for information transfer. The processor 200 may call logic instructions in the memory 201 to perform the control method for defrosting the air conditioner of the above embodiment.
Furthermore, the logic instructions in the memory 201 may be stored in computer readable storage media when implemented in software functional units and sold or used as independent products.
The processor 200 executes functional applications and data processing by executing the program instructions/modules stored in the memory 201, namely, implements the control method for defrosting the air conditioner in the above method embodiment.
The memory 201 may include a program storage area that may store an operating system, application programs necessary for at least functions, and a data storage area that may store data created according to the use of the terminal device, etc.
Fig. 3 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure.
As shown in fig. 3, the disclosed embodiments further provide air conditioners, including:
the refrigerant circulation loop is formed by connecting an outdoor heat exchanger 11, an indoor heat exchanger 12, a throttling device 13 and a compressor 14 through refrigerant pipelines;
the ends of the air supply branches 21 and are communicated with an air supply port of the compressor 14, and the end is communicated with a gas-liquid separator 22 arranged between the indoor heat exchanger 12 and the outdoor heat exchanger 11;
the heating device 3 is arranged on the refrigerant liquid inlet pipeline of the gas-liquid separator 22 in the reverse cycle defrosting mode and is configured to heat the refrigerant flowing through the refrigerant liquid inlet pipeline;
and a control device (not shown in the figure) for defrosting the air conditioner, which is electrically connected with the control valve 23 and the heating device 3. Here, the control device for air conditioner defrosting is the control device shown in the foregoing embodiment.
The air conditioner adopting the structural design can control the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the refrigerant flow of the refrigerant circulation loop according to the outdoor environment temperature when the air conditioner operates the bypass defrosting mode and supplies air to the compressor, not only can directly adjust the temperature and the flow of the refrigerant which becomes gaseous after heating and is then divided to be used for supplying air, but also can improve the temperature of the refrigerant flowing into the outdoor heat exchanger so as to improve the defrosting effect, thereby effectively reducing the problem that the defrosting capacity of the air conditioner decreases along with the time due to the operation of the bypass defrosting mode.
The disclosed embodiments also provide computer-readable storage media storing computer-executable instructions configured to perform the above-described method for air conditioner defrosting.
The disclosed embodiments also provide computer program products comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the above-described method for air conditioner defrosting.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, where the computer software product is stored in storage media, and includes or more instructions to enable computer devices (which may be personal computers, servers, or network devices) to execute all or part of the steps of the method described in the embodiment of the present disclosure.
The above description and drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them, other embodiments may include structural, logical, electrical, procedural and other changes, the embodiments represent only possible changes unless explicitly claimed, individual components and features are optional and the order of operation may vary, the scope of the embodiments of the disclosure includes the full scope of the claims and all available equivalents of the claims, when used in this application, although the terms "", "second" and the like may be used in this application to describe elements without limitation to these terms, these terms are used only to distinguish elements from elements, for example, the term 2 may be called a second element and, as such, the term " may be used only to distinguish between" elements "and" elements "if used without change in the meaning of the description," the term "is used in conjunction with" 4642 "or" may be used in "a" or "a" element "may be used in conjunction with" a "or" where "a" element is included in a "or included in the singular form of the embodiment" (or included in addition to the element, or included in a "component equivalent," and/or "may be included in a" disclosed "a" and/or "element).
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend 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 disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be only logical functional divisions, and in actual implementation, there may be other divisions, for example, multiple units or components may be combined or may be integrated into another systems, or features may be omitted or not executed.
The flowcharts and block diagrams in the figures may represent blocks, program segments, or portions of code which contain or more executable instructions for implementing specified logical functions, in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures.
Claims (10)
1, A control method for defrosting of air conditioner, which is characterized by comprising:
acquiring the outdoor environment temperature under the condition that the air conditioner enters a reverse cycle defrosting mode and air is supplied to a compressor; wherein, the air supplement comprises that at least part of the refrigerant circulation loop is controlled to flow back to the compressor along the air supplement branch through the gas-liquid separator;
and controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator and the adjustment operation of the refrigerant flow of the refrigerant circulation loop according to the outdoor environment temperature.
2. The method as claimed in claim 1, wherein the controlling of the operation of heating the feed refrigerant of the gas-liquid separator according to the outdoor ambient temperature includes:
according to the outdoor environment temperature, searching corresponding heating parameters from the th incidence relation, and controlling the heating operation according to the heating parameters;
and under the condition that the heating operation is controlled according to the heating parameters, the flow of the refrigerant which is divided to the air supplementing branch by the gas-liquid separator is greater than or equal to the target air supplementing flow.
3. The control method according to claim 2, wherein in the -th correlation, the heating parameter is inversely correlated with the outdoor ambient temperature;
wherein the heating parameter comprises a heating rate or a heating time period.
4. The control method according to claim 1, 2 or 3, wherein the controlling of the operation of adjusting the refrigerant flow rate of the refrigerant circulation circuit according to the outdoor ambient temperature includes:
searching a corresponding flow parameter from a second incidence relation according to the outdoor environment temperature, and controlling the adjusting operation according to the flow parameter;
and under the condition that the adjusting operation is controlled according to the flow parameter, the coil temperature of the indoor heat exchanger is greater than or equal to the target coil temperature.
5. The control method according to claim 4, wherein in the second correlation, the flow parameter and the outdoor ambient temperature are positively correlated.
6. The control method of claim 4, wherein controlling the adjustment operation in accordance with the flow parameter comprises:
and adjusting the flow opening of a throttling device arranged in the refrigerant circulation loop according to the flow parameters.
7. The control method according to claim 1, characterized by further comprising:
and when the air conditioner runs in a reverse cycle defrosting mode, if a defrosting exit condition is met, controlling to exit the reverse cycle defrosting mode, and after the heating is continued for a set time length, exiting the heating.
8. The control method according to claim 7, characterized by further comprising:
and when the set time is reached, controlling to stop supplying air to the compressor.
A control device for air conditioner defrosting comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the control method for air conditioner defrosting as claimed in any of claims 1 to 8 and when executing the program instructions.
10, air conditioner, characterized by that, includes:
the refrigerant circulating loop is formed by connecting an outdoor heat exchanger, an indoor heat exchanger, a throttling device and a compressor through refrigerant pipelines;
an end of the air supplement branch is communicated with an air supplement port of the compressor, and the end of the air supplement branch is communicated with an air-liquid separator arranged between the indoor heat exchanger and the outdoor heat exchanger;
the heating device is arranged on a refrigerant liquid inlet pipeline of the gas-liquid separator in a reverse circulation defrosting mode and is configured to heat a refrigerant flowing through the refrigerant liquid inlet pipeline;
a control for defrosting an air conditioner as set forth in claim 9, electrically connected to said control valve and said heating means.
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