CN110736271B

CN110736271B - Control method and control device for air make-up enthalpy increase of air conditioner and air conditioner

Info

Publication number: CN110736271B
Application number: CN201910911851.4A
Authority: CN
Inventors: 许文明; 罗荣邦
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2023-01-13
Anticipated expiration: 2039-09-25
Also published as: CN110736271A

Abstract

The application relates to the technical field of air conditioners and discloses a control method for air supplement and enthalpy increase of an air conditioner. The control method comprises the following steps: under the condition that the air conditioner supplements air to the compressor, acquiring the air supplement flow ratio; the air supply flow ratio is the ratio of the refrigerant flow divided by the air supply 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. 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 divided to supplement air can be adjusted, and the problem of poor actual heating auxiliary effect of an air supplement mode adopted by the air conditioner is effectively improved. The application also discloses a controlling means and air conditioner that is used for air conditioning to invigorate qi to increase enthalpy.

Description

Control method and control device for air make-up enthalpy increase of air conditioner and air conditioner

Technical Field

The application relates to the technical field of air conditioners, in particular to a control method and a control device for air supplement and enthalpy increase of an air conditioner and the air conditioner.

Background

With the development of science and technology, an air conditioner, as a necessary electrical appliance for ordinary people's daily life, has been gradually developed from the first single-cold machine type to an advanced machine type capable of having more functions of refrigeration, heating, defrosting and the like, wherein, for air conditioner products operating in low-temperature areas or under the weather conditions with heavy wind and snow, an important problem inevitably faced is 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, and is influenced by the temperature and humidity of the outdoor environment in winter, more frost is easily condensed on the outdoor heat exchanger, and when the frost is condensed to a certain thickness, the heating capability of the air conditioner is lower and lower; meanwhile, under the conditions of outdoor severe working conditions and frosting, the heat absorbed by the outdoor heat exchanger from the outdoor environment is greatly reduced, and the refrigerant which absorbs heat and evaporates into a gaseous state is also reduced, so that more and more liquid refrigerants and less gaseous refrigerants are contained in the refrigerant circulation loop of the air conditioner, the temperature and flow of the returned air and the sucked air of the compressor are further reduced, 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 the outdoor severe working condition, 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 increased by utilizing the supplemented refrigerants; however, the existing air supply structure design generally only changes the flow rate of the refrigerant for air supply through valve structures such as an electronic expansion valve, and the like, the control mode of the design is single, and parameters such as the temperature of the refrigerant for air supply, the flow rate, the temperature and the like of the refrigerant which continues to flow along the original refrigerant circulation loop after being divided cannot be adjusted and controlled, so that the gain of the air supply structure design on the heating performance of the air conditioner is still limited.

Disclosure of Invention

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a control method and a control device for air supplement and enthalpy increase of an air conditioner and the air conditioner, and aims to solve the technical problem that the actual heating auxiliary effect of an air supplement mode adopted by the air conditioner in the related art is poor.

In some embodiments, the control method for air-conditioning air-make-up enthalpy increase comprises the following steps:

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 some embodiments, a control device for air conditioning air make-up enthalpy increase includes: the air conditioner air make-up enthalpy control device comprises a processor and a memory, wherein program instructions are stored in the memory, and the processor is configured to execute the control method for air conditioner air make-up enthalpy increase according to some embodiments.

In some 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;

one end of the air supplementing branch is communicated with an air supplementing port of the compressor, and the other end of the air supplementing branch is communicated with an air-liquid separator arranged between the indoor heat exchanger and the outdoor heat exchanger; the air supply branch is provided with a control valve;

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-supplementing enthalpy-increasing according to some embodiments in the foregoing 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

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic flowchart of a control method for increasing enthalpy of air make-up air provided by 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

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

Fig. 1 is a schematic flowchart of a control method for defrosting an air conditioner according to an embodiment of the present disclosure.

As shown in fig. 1, an embodiment of the present disclosure provides a method for controlling air make-up enthalpy increase of an air conditioner, which can be used to solve the problem that an actual heating auxiliary effect of an air make-up mode adopted by the air conditioner under rain and snow or low-temperature and severe cold conditions is poor; in an 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 disclosure, the air conditioner is generally set to operate in a heating mode under a low-temperature and severe cold condition, and is affected by external environmental factors, and the heating performance of the air conditioner changes, if the external environment is severe, the cooling and heating load of the air conditioner increases, the heat absorption capacity of the outdoor heat exchanger from the outdoor environment decreases, and the quantity of the gaseous refrigerant formed by the vaporization of the liquid refrigerant after heat absorption also decreases, so that when the refrigerant flows back to the air return end of the compressor from the outdoor heat exchanger, the redundant liquid refrigerant is stored by the liquid reservoir, and only the gaseous refrigerant flows back to the compressor. In this case, as the heating operation time is extended, the amount of refrigerant in the refrigerant circulation circuit of the air conditioner is gradually reduced, and the heating performance of the air conditioner is also greatly attenuated.

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, one end of the air supplement branch is communicated with an air supplement port of the compressor, and the other end of the air supplement branch is communicated with a gas-liquid separator arranged between the indoor heat exchanger and the outdoor heat exchanger; the air supply branch is provided with a control valve; therefore, the air supply operation performed on the compressor in step S101 can be performed by the air supply branch and the related accessories, and the air supply includes controlling at least a portion of the refrigerant in the refrigerant circulation loop to flow back to the compressor through the air-liquid separator along the air supply branch.

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 some optional embodiments, the obtaining the make-up air flow ratio in step S101 includes: acquiring the current liquid level height of a liquid refrigerant in a gas-liquid separator; and acquiring the air supplement 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 first incidence relation according to the ratio of the current liquid level height to the total liquid level height.

The first incidence relation comprises one or more corresponding relations between the ratio of the current liquid level height to the total liquid level height and the ratio of the air supply flow. Illustratively, an alternative ratio to make-up air flow ratio is shown in table 1, which, as shown in the following table,

TABLE 1

Ratio h _{Liquid for treating urinary tract infection} /h _{General assembly}	Air make-up flow rate (unit:%)
		h _{Liquid for treating urinary tract infection} /h _{General assembly} ≤A1	B1
A1＜h _{Liquid for medical purpose} /h _{General assembly} ≤A2	B2
		A3＜h _{Liquid for medical purpose} /h _{General assembly}	B3

In the corresponding relation, the ratio is negatively correlated with the make-up flow ratio, that is, the larger the ratio is, the smaller the make-up flow ratio is, and the smaller the amount of refrigerant actually used for making up the compressor is. Therefore, when step S101 is executed, the acquisition of the make-up air flow rate ratio may be determined by the first correlation.

And S102, controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the make-up air flow ratio.

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 some embodiments, the air conditioner is provided with a heating device at the refrigerant inlet pipeline of the gas-liquid separator in the heating mode, and the heating device is configured to controllably heat the refrigerant flowing through the refrigerant inlet pipeline; therefore, in step S102, the heating operation of the heating device is controlled to be turned on.

In one embodiment, the heating device is an electromagnetic heating device, which 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 method for controlling air-supply enthalpy-increasing of the air conditioner, which is 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-supply flow ratio when the air conditioner supplies air to the compressor, so that the temperature and the flow of the branch refrigerant which is changed into a gaseous state after being heated and then is divided out for air supply can be adjusted, and the problem of poor actual heating auxiliary effect of an air-supply mode adopted by the air conditioner is effectively solved.

In some optional embodiments, the step S103 of controlling the heating operation of the liquid-in-refrigerant of the gas-liquid separator according to the make-up air flow ratio includes: acquiring corresponding heating parameters from the second incidence relation according to the air supplement flow ratio; and controlling the heating operation according to the heating parameters.

Optionally, the heating parameter comprises a heating rate or a heating duration.

Wherein, the second incidence relation comprises the corresponding relation between one or more air supply flow ratio and the heating parameter. An alternative make-up air flow ratio versus heating parameter is shown in table 2, which, as shown below,

TABLE 2

In the corresponding relation, the heating parameter and the air supply flow rate are in a negative correlation relation. That is, the larger the make-up air flow ratio is, the more the refrigerant flow for making up air is, the smaller the heating parameter is set to avoid further increase of the refrigerant flow for making up air, so as to ensure the effect of making up air for the compressor and 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 many refrigerants flow through the make-up air branch.

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 control method for increasing enthalpy of air make-up air of the present application further includes: 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.

Optionally, the purge gas withdrawal condition includes: t is t _{Air supplement} ≥t _{Threshold value} . Wherein, t _{Air supplement} For the accumulated time of qi supply, t _{Threshold value} Is the time threshold for air supplement.

Here, in the air supplement process according to the embodiment of the present disclosure, if the air supplement exit condition is satisfied, it indicates that the current performance of the compressor can satisfy the current heating requirement, and therefore, the air supplement to the compressor is stopped under control, so as to reduce the adverse effect of the decrease of the heat absorption amount of the outdoor heat exchanger from the outdoor environment due to the excessive refrigerant in the refrigerant circulation loop consumed by the air supplement 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 some optional embodiments, the air conditioner further includes a heating device disposed on the refrigerant outlet pipe of the outdoor heat exchanger, and the heating device is configured to heat the outlet refrigerant flowing through the refrigerant outlet pipe 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 supply 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 some embodiments of the present disclosure, controlling the liquid refrigerant of the outdoor heat exchanger to be heated according to the liquid refrigerant state of the outdoor heat exchanger includes: and acquiring corresponding heating parameters from the third correlation according to the liquid outlet 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.

The third correlation includes the corresponding relationship between the state parameters of one or more liquid outlet refrigerants and the heating parameters. Therefore, the optimal air-supply enthalpy-increasing effect can be realized by searching the heating parameter corresponding to the state parameter of the liquid-out refrigerant in the third correlation and adjusting the working state of the heating device arranged on the refrigerant liquid outlet pipeline of the outdoor heat exchanger according to the heating parameter.

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 a control device for increasing enthalpy of air make-up air 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 execute the control method for increasing enthalpy of air make-up air of the air conditioner according to the above embodiment.

In addition, the logic instructions in the memory 201 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.

The memory 201 is a computer-readable storage medium, and can be used for storing software programs, computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 200 executes functional applications and data processing by executing 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 storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 201 may include a high-speed random access memory, and may also include a nonvolatile memory.

As shown in fig. 3, the present disclosure also provides an air conditioner, 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;

an air supplement branch 21, one end of which is communicated with an air supplement port of the compressor 14, and the other end of which is communicated with a gas-liquid separator 22 arranged between the indoor heat exchanger 12 and the outdoor heat exchanger 11; the air supply branch is provided with a control valve 23;

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 embodiment of the disclosure also provides a computer-readable storage medium, which stores computer-executable instructions configured to execute the above method for increasing enthalpy of air make-up of an air conditioner.

Embodiments of the present disclosure also provide a computer program product comprising a computer program stored on a computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, cause the computer to perform the above-described method for defrosting an air conditioner.

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 embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes, and may also be a transient storage medium.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the disclosed embodiments includes the full ambit of the claims, as well as all available equivalents of the claims. As used in this application, although the terms "first," "second," etc. may be used in this application to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, provided that all occurrences of the first element are renamed consistently and all occurrences of the second element are renamed consistently. The first and second elements are both elements, but may not be the same element. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of additional like elements in a process, method, or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.

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.

In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. A control method for air make-up enthalpy increase of an air conditioner is characterized by comprising the following steps:

under the condition that the air conditioner supplements air to the compressor, the current liquid level height of the liquid refrigerant in the gas-liquid separator is obtained; 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;

acquiring a corresponding air supply flow ratio from a first incidence relation according to the ratio of the current liquid level height to the total liquid level height; the first incidence relation comprises a corresponding relation between one or more ratios of the current liquid level height to the total liquid level height and the air supplement flow ratio, the ratios and the air supplement flow ratio are in a negative correlation relation, and the air supplement flow ratio is the ratio of the refrigerant flow split by the air supplement branch to the total refrigerant flow;

acquiring corresponding heating parameters from a second incidence relation according to the air supply flow ratio; in the second incidence relation, the proportion of the heating parameter to the air supply flow is in a negative correlation relation;

and controlling the heating operation of the liquid inlet refrigerant of the gas-liquid separator according to the heating parameters.

2. The control method of claim 1, wherein the heating parameter comprises a heating rate.

3. 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.

4. 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.

5. The control method as claimed in claim 4, 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.

6. A control device for air conditioning enthalpy addition, comprising a processor and a memory storing program instructions, characterized in that the processor is configured to execute the control method for air conditioning enthalpy addition according to any one of claims 1 to 5 when executing the program instructions.

7. An air conditioner, comprising:

one end of the air supplementing branch is communicated with an air supplementing port of the compressor, and the other end of the air supplementing branch is communicated with a gas-liquid separator arranged between the indoor heat exchanger and the outdoor heat exchanger; the air supply branch is provided with a control valve;

the device as claimed in claim 6, wherein the control valve is electrically connected to the heating device.