CN110736271A - Control method and control device for air make-up enthalpy increase of air conditioner and air conditioner - Google Patents
Control method and control device for air make-up enthalpy increase of air conditioner and air conditioner Download PDFInfo
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- CN110736271A CN110736271A CN201910911851.4A CN201910911851A CN110736271A CN 110736271 A CN110736271 A CN 110736271A CN 201910911851 A CN201910911851 A CN 201910911851A CN 110736271 A CN110736271 A CN 110736271A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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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
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/01—Heaters
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 according to the air supplement flow ratio when the air conditioner supplements air to the compressor, so that the temperature and the flow of the branch refrigerant which becomes gaseous after being heated and is then branched out for supplementing air can be adjusted, and the problem of poor actual heating auxiliary effect of an air-conditioning air supplement mode is further effectively improved.
Description
Technical Field
The application relates to the technical field of air conditioners, in particular to control methods and devices for air make-up enthalpy increase of an air conditioner and the air conditioner.
Background
With the development of science and technology, an air conditioner serving as necessary electrical equipment for ordinary people's daily life is gradually developed from the first single-cold type to an advanced type capable of having more functions of refrigeration, heating, defrosting and the like, wherein important inevitable problems to be faced by air conditioner products operating in low-temperature areas or under the weather conditions with heavy wind and snow are the frosting problem of an air conditioner outdoor unit, an outdoor heat exchanger of the outdoor unit plays the role of an evaporator for absorbing heat from the outdoor environment, is influenced by the temperature and the humidity of the outdoor environment in winter, more frost is easily condensed on the outdoor heat exchanger, the heating capacity of the air conditioner is lower and lower after the frost is condensed to , meanwhile, under the severe outdoor working conditions and frosting conditions, the heat absorbed by the outdoor heat exchanger from the outdoor environment is greatly reduced, the heat absorbed by the refrigerant evaporated into a gaseous refrigerant is reduced, so that the liquid refrigerant in an air conditioner circulation loop is more and the gaseous refrigerant is less, the temperature and the flow of air return air and suction of the refrigerant of the compressor are reduced due to the , and the heating performance of the air conditioner is greatly reduced.
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 related technology, aiming at outdoor severe working conditions, an air supplementing structure capable of shunting part of refrigerants to supplement air and increase enthalpy of a compressor is additionally arranged on part of the existing air conditioner type, so that the temperature and the flow rate of the refrigerants at the air return end of the compressor are improved by utilizing the supplemented refrigerants, but the flow rate of the refrigerants for supplementing air is changed just by a valve structure such as an electronic expansion valve and the like in the existing air supplementing structure design , the control mode of the design is single , and parameters such as the temperature of the refrigerants for supplementing air, the flow rate of the refrigerants which continuously flow along an original refrigerant circulation loop after being shunted and the temperature cannot be adjusted and controlled, so that the gain of the air supplementing structure design on the heating performance of the air conditioner is still limited.
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 make-up enthalpy increase of an air conditioner and the air conditioner, so as to solve the technical problem that the actual heating auxiliary effect of an air make-up mode adopted by the air conditioner in the related art is poor.
In , the method for controlling air make-up enthalpy increase of the air conditioner comprises:
under the condition that the air conditioner supplements air to the compressor, acquiring the air supplement flow ratio; 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 an air-liquid separator, wherein the air supplement flow ratio is the ratio of the refrigerant flow split by the air supplement branch to the total refrigerant flow;
and controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the air make-up flow ratio.
In , the apparatus for controlling air conditioning air make-up enthalpy increase includes a processor and a memory storing program instructions, and the processor is configured to execute the method for controlling air conditioning air make-up enthalpy increase according to 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 heating mode and is configured to heat the refrigerant flowing through the refrigerant liquid inlet pipeline;
the control device for air-conditioning air-make-up enthalpy increase as in the embodiments is electrically connected with the control valve and the heating device.
The control method and device for air make-up enthalpy increase 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 air-conditioning air-supplying enthalpy-increasing provided by the embodiment of the disclosure can control the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the air-supplying flow ratio when the air-conditioner supplies air to the compressor, so that the temperature and the flow of the branch refrigerant which becomes gaseous after being heated and is then branched out for air-supplying can be adjusted, and the problem of poor actual heating auxiliary effect of the air-supplying mode adopted by the air-conditioner is effectively improved.
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 flow chart diagram illustrating a method for controlling air make-up enthalpy increase of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic structural diagram of a control device for increasing enthalpy of air make-up air provided by 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, in the embodiment of the present disclosure, methods for controlling air make-up enthalpy of an air conditioner are provided, which can be used to solve the problem that the actual heating auxiliary effect of an air make-up mode adopted by the air conditioner under the conditions of rain, snow or low temperature and severe cold is poor, and in the embodiment, the main flow steps of the control method include:
s101, acquiring a gas supplementing flow ratio under the condition that the air conditioner supplements gas 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 a gas-liquid separator, wherein the air supplement flow ratio is the ratio of the refrigerant flow split by the air supplement branch to the total refrigerant flow;
in the embodiment of the present disclosure, the air conditioner is generally set to operate in a heating mode under low-temperature and severe cold conditions, and is affected by external environmental factors, so that the heating performance of the air conditioner may change, and if the external environment is severe, the cooling and heating load of the air conditioner increases, the heat absorption amount of the outdoor heat exchanger from the outdoor environment decreases, and the amount of the gaseous refrigerant formed by the liquid refrigerant through heat absorption and vaporization decreases accordingly, so that when the refrigerant flows back from the outdoor heat exchanger to the air return end of the compressor, the excess liquid refrigerant may be stored in the liquid reservoir, and only the gaseous refrigerant flows back to the compressor.
Therefore, when the air conditioner is in heating operation, the air supply to the compressor is controlled.
In the embodiment of the present disclosure, in step S101, the compressor is compensated with air, and the temperature and the flow rate of the gaseous refrigerant in the refrigerant flowing back to the compressor can be increased by means of air compensation, so that the temperature and the flow rate of the refrigerant flowing back to the compressor are increased by applying air compensation operation in the heating process, so as to improve the heating performance of the air conditioner in the heating condition.
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 ratio of the make-up flow rate is a ratio of the refrigerant flow rate branched by the make-up branch to the total refrigerant flow rate.
In alternative embodiments, the obtaining of the make-up air flow ratio in step S101 includes obtaining a current liquid level height of the liquid refrigerant in the gas-liquid separator, and obtaining the make-up air flow ratio according to the current liquid level height.
Optionally, the air conditioner is further provided with a liquid level detection device for detecting a real-time liquid level height of the liquid refrigerant in the gas-liquid separator, and in step S101, the parameter of the current liquid level height may be determined according to data detected by the liquid level detection device.
And then, acquiring a corresponding air supplement flow ratio from the correlation of according to the ratio of the current liquid level height to the total liquid level height.
Wherein the th association includes correspondence between ratios of or more of the current liquid level height to the total liquid level height, and the make-up air flow ratio, exemplary alternative ratios are shown in table 1, as shown in the following table,
TABLE 1
| Ratio hLiquid for treating urinary tract infection/hGeneral assembly | Air make-up flow rate (unit:%) |
| hLiquid for treating urinary tract infection/hGeneral assembly≤A1 | B1 |
| A1＜hLiquid for treating urinary tract infection/hGeneral assembly≤A2 | B2 |
| A3＜hLiquid for treating urinary tract infection/hGeneral assembly | B3 |
In the corresponding relationship, the ratio is negatively correlated with the make-up air flow ratio, that is, the larger the ratio is, the smaller the make-up air flow ratio is, the smaller the amount of refrigerant actually used for making up air for the compressor is, therefore, when step S101 is executed, the make-up air flow ratio can be determined and obtained through the th association relationship.
And S102, controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the ratio of the make-up air flow.
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 indoor heat exchanger in the heating mode can be vaporized again by absorbing heat before flowing into the gas-liquid separator, and the temperature and the flow rate of the gaseous refrigerant in the refrigerant which flows back to the compressor through the gas supplementing branch are changed; under this condition, can just can reach the effect of adjusting the tonifying qi flow through the heating operation to vapour and liquid separator's feed liquor refrigerant, simultaneously, heating operation can also promote the temperature of liquid refrigerant, makes it can more easily vaporize into gaseous state refrigerant after flowing into outdoor heat exchanger to satisfy the demand that improves compressor compression performance and air conditioner heating performance.
In , the air conditioner is provided with a heating device at the refrigerant inlet pipe of the gas-liquid separator in the heating mode, the heating device is configured to controllably heat the refrigerant flowing through the refrigerant inlet pipe, and therefore 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.
The control method for air-conditioning air-supplying enthalpy-increasing provided by the embodiment of the disclosure can control the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the air-supplying flow ratio when the air-conditioner supplies air to the compressor, so that the temperature and the flow of the branch refrigerant which becomes gaseous after being heated and is then branched out for air-supplying can be adjusted, and the problem of poor actual heating auxiliary effect of the air-supplying mode adopted by the air-conditioner is effectively improved.
In alternative embodiments, the step S103 of controlling the heating operation of the liquid refrigerant of the gas-liquid separator according to the make-up air flow ratio includes obtaining a corresponding heating parameter from the second correlation according to the make-up air flow ratio, and controlling the heating operation according to the heating parameter.
Optionally, the heating parameter comprises a heating rate or a heating time period.
Wherein the second correlation comprises corresponding relations of or more air supply flow ratio and heating parameter, table 2 shows corresponding relations of optional air supply flow ratio and heating parameter, as shown in the following table,
TABLE 2
The heating parameter is set to be a smaller value to avoid -step increase of the flow of the refrigerant for air supplement so as to avoid the problem that the refrigerant actually used for heat exchange between the outdoor heat exchanger and the external environment is greatly reduced because too much refrigerant flows through the air supplement branch while the air supplement effect of the compressor is ensured.
Therefore, when step S102 is executed, the heating parameter corresponding to the make-up air flow ratio may be determined through the second correlation, and the heating operation on the liquid-inlet refrigerant of the gas-liquid separator may be adjusted according to the heating parameter.
in some optional embodiments, the flow of the method for controlling air make-up enthalpy increase of an air conditioner further includes controlling to stop air make-up for the compressor and to decrease the heating parameter of the heating operation if the air make-up exit condition is satisfied.
Optionally, the purge gas withdrawal condition includes: t is tAir supplement≥tThreshold value. Wherein, tAir supplementFor the accumulated time of qi supply, tThreshold valueIs the air-replenishing time length threshold value.
Here, in the air make-up process of the embodiment of the present disclosure, if the air make-up exit condition is satisfied, it indicates that the current performance of the compressor in the compressor can already satisfy the current heating requirement, so that the air make-up of the compressor is stopped by controlling to reduce the adverse effect of the decrease of the heat absorption capacity of the outdoor heat exchanger from the outdoor environment due to the excessive refrigerant in the refrigerant circulation loop consumed by the air make-up operation.
In the embodiment of the disclosure, the heating parameters of the heating operation are controlled to be reduced, and the compressor is stopped to supplement air, so that the compression performance of the compressor is improved, and the temperature of the refrigerant for supplementing air is not required to be increased by continuously heating, and therefore, the heating parameters of the heating operation are controlled to be reduced, so that the power consumption required by the heating operation is reduced, and the use cost of the air conditioner is reduced.
In , in some alternative embodiments, the air conditioner further includes a heating device disposed on the refrigerant outlet line of the outdoor heat exchanger, and the heating device can be used to heat the outlet refrigerant flowing through the refrigerant outlet line of the outdoor heat exchanger.
Therefore, in the embodiment of the present disclosure, the flow of the control method for increasing enthalpy of air make-up air of an air conditioner further includes: and controlling the liquid outlet refrigerant of the outdoor heat exchanger to be heated according to the liquid outlet refrigerant state of the outdoor heat exchanger.
Optionally, the liquid refrigerant outlet state of the outdoor heat exchanger includes a refrigerant temperature or a refrigerant pressure.
Here, the refrigerant defined by the heating mode flows downwards, and the liquid outlet refrigerant of the outdoor heat exchanger flows to the air return end of the compressor, and flows into the indoor heat exchanger together after being mixed with the refrigerant of the air supplement branch. Therefore, the liquid refrigerant state of the outdoor heat exchanger can directly affect the compression performance of the compressor. Therefore, in the embodiment, not only the liquid inlet refrigerant of the gas-liquid separator is heated to change the refrigerant state of the air supply branch, but also the liquid outlet refrigerant of the outdoor heat exchanger is heated, so that the aim of adjusting the state of the refrigerant flowing back to the compressor through the outdoor heat exchanger and further adjusting the actual air return effect of the compressor is fulfilled.
In the embodiments of the present disclosure, the controlling the heating operation of the liquid refrigerant of the outdoor heat exchanger according to the liquid refrigerant state of the outdoor heat exchanger includes obtaining a corresponding heating parameter from the third correlation according to the liquid refrigerant state.
Controlling heating operation according to the heating parameters; and under the condition that the heating operation is controlled by the heating parameters, the liquid outlet refrigerant state of the outdoor heat exchanger is gaseous. Under the condition, the refrigerant flowing back to the compressor can completely continue to participate in the refrigerant circulation, and the problem of flow reduction of the refrigerant circulation caused by the fact that the refrigerant is stored in the liquid storage tank due to the fact that the refrigerant is in a liquid state is solved.
Therefore, the working state of the heating device arranged on the refrigerant liquid outlet pipeline of the outdoor heat exchanger can be adjusted according to the heating parameters by searching the heating parameters corresponding to the state parameters of the liquid outlet refrigerants in the third correlation, so that the heating device can be matched with the air supply branch to jointly realize the optimal air supply and enthalpy increase effect.
Fig. 2 is a schematic structural diagram of a control device for air make-up enthalpy increase of an air conditioner according to an embodiment of the disclosure.
The embodiment of the present disclosure provides control devices for increasing enthalpy of air-conditioner air make-up, 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 execute the control method for increasing enthalpy of air make-up air of the air conditioner according to 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 the functional application and data processing by executing the program instructions/modules stored in the memory 201, namely, implements the control method for air conditioning air make-up enthalpy increase 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 heating 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 air make-up enthalpy increase of the air conditioner is electrically connected with the control valve 23 and the heating device 3. Here, the control device for increasing enthalpy of air-conditioning make-up air 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 according to the air supplementing flow ratio when the air conditioner supplements air to the compressor, so that the temperature and the flow of the branch refrigerant which becomes gaseous state after being heated and is used for supplementing air are adjusted, and the problem of poor actual heating auxiliary effect of the air supplementing mode adopted by the air conditioner is effectively improved.
The disclosed embodiment also provides computer-readable storage media storing computer-executable instructions configured to perform the above method for air conditioning air enthalpy addition.
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 method for controlling air make-up enthalpy increase of an air conditioner, which is characterized by comprising the following steps:
acquiring the air supplement flow ratio under the condition that the air conditioner supplements air 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 an air-liquid separator, wherein the air supplement flow ratio is the ratio of the refrigerant flow split by the air supplement branch to the total refrigerant flow;
and controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the make-up air flow ratio.
2. The control method according to claim 1, wherein the obtaining the make-up air flow ratio comprises:
acquiring the current liquid level height of the liquid refrigerant in the gas-liquid separator;
and acquiring the air supplement flow ratio according to the current liquid level height.
3. The control method according to claim 2, wherein the obtaining the make-up air flow ratio according to the current liquid level height comprises:
and acquiring a corresponding air supplement flow ratio from an th incidence relation according to the ratio of the current liquid level height to the total liquid level height, wherein the th incidence relation comprises corresponding relations of or more ratios of the current liquid level height to the total liquid level height and the air supplement flow ratio.
4. The method as claimed in any one of claims 1 to 3 to , wherein the controlling of the operation of heating the feed refrigerant of the gas-liquid separator according to the make-up air flow rate ratio comprises:
acquiring corresponding heating parameters from a second incidence relation according to the air supply flow ratio;
controlling the heating operation according to the heating parameters.
5. The control method according to claim 4, wherein in the second correlation, the heating parameter is in a negative correlation with the make-up air flow ratio;
wherein the heating parameter comprises a heating rate.
6. The control method according to claim 1, characterized by further comprising:
and if the air supply exit condition is met, controlling to stop supplying air to the compressor, and controlling to reduce the heating parameters of the heating operation.
7. The control method according to claim 1, characterized by further comprising:
and controlling the liquid outlet refrigerant of the outdoor heat exchanger to be heated according to the liquid outlet refrigerant state of the outdoor heat exchanger.
8. The control method according to claim 7, wherein the controlling of the heating operation of the liquid refrigerant of the outdoor heat exchanger according to the liquid refrigerant state of the outdoor heat exchanger comprises:
acquiring corresponding heating parameters from a third correlation according to the liquid outlet refrigerant state;
controlling the heating operation according to the heating parameters; and under the condition that the heating operation is controlled by the heating parameters, the liquid outlet refrigerant state of the outdoor heat exchanger is gaseous.
A control device for enthalpy addition of air make-up air, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the control method for enthalpy addition of air make-up air according to any of claims 1 to 8 through 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 the refrigerant liquid inlet pipeline of the gas-liquid separator in the heating mode and is configured to heat the refrigerant flowing through the refrigerant liquid inlet pipeline;
the control device for air conditioning enthalpy addition increasing air conditioner as claimed in claim 9, electrically connected with the control valve and the heating device.
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| CN209341402U (en) * | 2018-11-24 | 2019-09-03 | 青岛海尔空调器有限总公司 | A kind of air-conditioning system |
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| JP2001033117A (en) * | 1999-05-19 | 2001-02-09 | Daikin Ind Ltd | Refrigerating device |
| CN103363708A (en) * | 2012-04-09 | 2013-10-23 | 珠海格力电器股份有限公司 | Heat pump type air conditioning device |
| KR101637755B1 (en) * | 2014-12-02 | 2016-07-07 | 현대자동차주식회사 | Heat pump system for electric car and method for controlling for the same |
| CN107166664A (en) * | 2017-06-09 | 2017-09-15 | 青岛海尔空调器有限总公司 | A kind of air conditioner and control method |
| CN107289682A (en) * | 2017-07-10 | 2017-10-24 | 珠海格力电器股份有限公司 | Air conditioner starts control method, control system, starter and air conditioner |
| CN209341402U (en) * | 2018-11-24 | 2019-09-03 | 青岛海尔空调器有限总公司 | A kind of air-conditioning system |
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