CN112503723B

CN112503723B - Valve body detection method, air conditioning apparatus, and readable storage medium

Info

Publication number: CN112503723B
Application number: CN202011421994.6A
Authority: CN
Inventors: 高东东; 李骏
Original assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Current assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-10-08
Anticipated expiration: 2040-12-08
Also published as: CN112503723A

Abstract

The embodiment of the invention provides a valve body detection method, air conditioning equipment and a readable storage medium, wherein the valve body detection method comprises the following steps: acquiring a refrigerant recovery parameter; controlling the valve body and the outdoor unit to operate according to the refrigerant recovery parameters so as to recover the refrigerant in the pipeline to a pipe section connected with an exhaust port of a compressor in the outdoor unit; determining target detection objects in all detection valve bodies and all adjusting valve bodies; adjusting the opening degree of a valve port of a target detection object; and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the opening degree of the valve port. According to the technical scheme, in the process of refrigerant recovery, the actual pipeline parameters are determined through the change of the system state, namely the opening degree of the valve opening is adjusted to detect the fault, whether the action of the control valve body is normal or not is detected, the running condition monitoring of unit components can be realized, and the normal running of the whole unit is ensured.

Description

Valve body detection method, air conditioning apparatus, and readable storage medium

Technical Field

The invention relates to the technical field of air conditioning equipment, in particular to a valve body detection method, air conditioning equipment and a readable storage medium.

Background

With the increasing requirements of environmental protection on air conditioning technology, the application of multi-split air conditioning systems is gradually increased in the household and commercial fields, and the living or using comfort of users is greatly improved. However, with the continuous use of the multi-split air conditioning system, the possibility of the failure of each valve body in the pipeline is increased, and when any valve body fails, the refrigeration or heating of the whole multi-split air conditioning system is greatly affected, which is not beneficial to the use of users.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In view of this, a first aspect of an embodiment of the present invention provides a valve body detection method.

A second aspect of embodiments of the present invention provides an air conditioning apparatus.

A third aspect of embodiments of the present invention provides a readable storage medium.

In order to achieve the above object, an embodiment of a first aspect of the present invention provides a valve body detection method for an air conditioning apparatus, where the air conditioning apparatus includes an outdoor unit and at least one indoor unit connected to the outdoor unit through a pipeline, and the pipeline is provided with at least one control valve body, and the valve body detection method includes: acquiring a refrigerant recovery parameter; controlling the valve body and the outdoor unit to operate according to the refrigerant recovery parameters so as to recover the refrigerant in the pipeline to a pipe section connected with an exhaust port of a compressor in the outdoor unit; determining target detection objects in all detection valve bodies and all adjusting valve bodies; adjusting the opening degree of a valve port of a target detection object; and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the opening degree of the valve port.

According to the valve body detection method for the air conditioning equipment provided by the embodiment of the first aspect of the invention, the air conditioning equipment comprises an outdoor unit and a plurality of indoor units, the indoor units are connected with the outdoor unit through pipelines, and one or more control valve bodies are arranged on the pipelines, so that the flow rate and the flow direction of a refrigerant in the pipelines can be adjusted under the action of the control valve bodies, and the air conditioning equipment can normally adjust the air. In the air conditioning equipment, when the valve body fails, the refrigerant is firstly recycled to the outdoor unit, and after a target detection object is determined, the valve opening is adjusted and whether the corresponding actual pipeline parameter changes greatly or not is detected to judge and realize the operation.

In the process that the control valve body and the outdoor unit respectively operate according to the corresponding refrigerant recovery parameters, the refrigerant in the pipeline can gradually move to the outdoor unit side, at the moment, in the recycling process, a target detection object which needs to be detected whether is normal or not is determined in the plurality of control valve bodies, and the opening degree of a valve port of the target detection object is adjusted, the actual pipeline parameters can be detected, and further, by comparing the actual pipeline parameters with the theoretical pipeline parameters, whether the control valve body as a target detection object is normal can be determined, and it can be understood that if the control valve body fails, no matter the control valve body is internally blocked or the valve core fails to fall off, the opening degree of the valve port cannot be normally adjusted, that is, a large difference exists between an actual pipeline parameter and a theoretical pipeline parameter of the air conditioning equipment, and whether a fault exists can be obviously seen. It should be emphasized that, in the process of refrigerant recovery, the invention determines the actual pipeline parameter to detect the fault by the change of the system state, namely, by adjusting the opening of the valve port, and detects whether the action of the control valve body is normal, thereby realizing the operation condition monitoring of the unit components and ensuring the normal operation of the whole unit.

It should be emphasized that, because the low pressure of the system of the air conditioning equipment is lower and higher and the high pressure is higher and lower by controlling the action of the valve body, the judgment accuracy of whether the valve body is in fault or not is improved by comparing the state parameter changes of the high pressure, the low pressure, the exhaust temperature and the like of the system with a target value, thereby realizing the monitoring of the running condition of key components of the air conditioning system and ensuring that the unit runs well.

The actual pipeline parameters of the air conditioning equipment can be specific parameter values of exhaust temperature, a system high pressure value and a system low pressure value, and can also be variation values of the parameter values before and after the opening degree of the valve port is adjusted. It should be noted that, as those skilled in the art will know, the capillary tube of the air conditioner and the compressor divide the pipeline formed by the indoor unit and the outdoor unit into two parts, and the pressing force can be divided into high pressure and low pressure, when cooling, the indoor unit is at low pressure and the outdoor unit is at high pressure, and when heating, the opposite is true, i.e., the indoor unit is at high pressure and the outdoor unit is at low pressure, so the system high pressure value is a higher pressure value in the whole system operation process, generally refers to the pressure in the pipe section connected with the exhaust pipe of the compressor, and the system low pressure value is the pressure in the pipeline connected with the return pipe of the compressor after heat exchange through the heat exchanger.

Of course, the theoretical pipeline parameter may be a numerical value or a range.

In addition, the valve body detection method in the above scheme provided by the invention can also have the following additional technical features:

in the above technical solution, before the refrigerant recovery parameter is obtained, the method further includes: acquiring a refrigerant recovery instruction; acquiring an operation mode of the air conditioning equipment according to the refrigerant recovery instruction; acquiring a refrigerant recovery parameter, specifically comprising: and acquiring a refrigerant recovery parameter corresponding to the operation mode.

In the technical scheme, whether a refrigerant recovery instruction is received is judged before the refrigerant recovery parameter is limited to be obtained, and when the refrigerant recovery instruction is received, the refrigerant recovery parameter corresponding to the operation mode can be determined according to the current operation mode of the air conditioning equipment. It can be understood that when the refrigerant is recovered, the control object of the air conditioner in the refrigeration mode is different from the control object of the air conditioner in the heating mode, the refrigerant recovery parameters are different, the operation mode is introduced, the valve body detection device is suitable for different use environments, different requirements of users are met, and meanwhile the valve body detection device can still detect the valve body, so that the detection range is greatly improved.

The refrigerant recovery command may be a command sent to the air conditioning equipment through wired or wireless communication.

Among the above-mentioned technical scheme, link to each other through first being responsible for and the second is responsible for between off-premises station and at least one indoor set, and the control valve body includes: two detection valve bodies and at least one regulating valve body, two detection valve bodies are located respectively on the first person in charge and the second person in charge, retrieve parameter control valve body and off-premises station operation according to the refrigerant, specifically include: when the operation mode is a refrigeration mode, determining the cold recovery frequency of a compressor in the outdoor unit and the cold recovery parameter interval of the air conditioning equipment; reducing the opening degree of a valve port of a detection valve body on the first main pipe and the opening degree of a valve port of an adjusting valve body of the indoor unit; controlling the compressor to operate according to the cold recovery frequency; and when the operating parameters of the air conditioning equipment are in the cold recovery parameter interval, controlling the two detection valve bodies and the compressor to be closed.

In this technical scheme, outdoor opportunity and one or more indoor set pass through the pipeline and link to each other, and the pipeline of specific connection is the first person in charge and the second person in charge, can understand, when outdoor unit and a plurality of indoor set are connected, the first person in charge and the second person in charge are as the main road, to every indoor set, all be equipped with the first person in charge and the second person in charge branch road that links to each other to realize the removal of refrigerant, guarantee the normal clear of heat transfer.

The control valve body comprises two detection valve bodies respectively arranged on the first main pipe and the second main pipe, and an adjusting valve body arranged on the pipeline and capable of adjusting the refrigerant in the pipeline, after the refrigerant recovery parameters are obtained, the control valve body and the outdoor unit need to be controlled to operate according to the refrigerant recovery parameters, and the control object is changed according to different operation modes, specifically, when the operation mode is a refrigeration mode, firstly determining the cold recovery frequency of a compressor in the outdoor unit, and a cold recovery parameter interval, at the moment, controlling the opening degree of a valve port of a detection valve body positioned on the first main pipe to be reduced, meanwhile, the opening degree of a valve port of the regulating valve body positioned on the indoor unit side is controlled to be reduced, the compressor runs for a period of time according to the cold recovery frequency until the running parameters are within the cold recovery parameter interval, and then the refrigerant recovery in the refrigeration mode can be completed. After the refrigerant is recovered, the refrigerant in the pipeline can be transferred to the outdoor unit side, and the two detection valve bodies and the compressor can be closed at the moment, so that the pressure difference can be quickly established when the compressor is restarted next time, and the effect of quickly exchanging heat of the indoor unit is realized.

It can be understood that the cold recovery frequency and the cold recovery parameter interval are both preset parameters corresponding to the refrigeration mode, and the sizes of the parameters are only related to the operation mode, so as to facilitate the operation of refrigerant recovery in the refrigeration mode.

The detection valve body can be an electromagnetic valve with an adjustable valve port, such as an electric ball valve, and the adjusting valve body can be an electronic expansion valve and a valve body which is arranged in a pipeline and can adjust the operation of equipment, such as a pressure release valve and the like.

It should be noted that the first main pipe is a pipe section connected to the exhaust pipe of the compressor in the cooling mode, and the pressure of the pipe is relatively high, and the second main pipe is a pipe section connected to the return pipe of the compressor in the cooling mode, and the pressure of the pipe is relatively low.

The first main pipe and the second main pipe may be connected to form one indoor unit, or may be connected to form a plurality of indoor units, but not necessarily all indoor units, all indoor units may be connected to the outdoor unit through the first main pipe and the second main pipe, and of course, some indoor units may be connected to the outdoor unit through independent pipes.

In the above technical solution, determining target detection objects in all detection valve bodies and all adjustment valve bodies specifically includes: and after the compressor is controlled to operate for the first time according to the cold recovery frequency, determining the detection valve body on the first main pipe as a target detection object.

In the technical scheme, when the air conditioning equipment runs in a refrigeration mode and a target detection object needs to be determined, the detection valve body on the first main pipe is detected firstly after the compressor runs for the first time, namely, the detection valve body on the first main pipe is used as the target detection object, at the moment, the opening degree of a valve port of the detection valve body on the first main pipe can be adjusted, the rest control valve bodies are kept unchanged, and whether the detection valve body on the first pipeline breaks down or not can be determined by observing actual pipeline parameters and comparing the actual pipeline parameters with theoretical pipeline parameters.

Further, when the opening degree of the valve port of the control valve body is adjusted, the opening degree can be adjusted to a minimum opening degree, and it should be noted that the minimum opening degree is a minimum value allowing the refrigerant to flow, and the minimum opening degree is nonzero.

In the above technical solution, determining the target detection objects in all the control valve bodies specifically includes: controlling a detection valve body on the first main pipe to operate for a second time at the maximum opening degree; acquiring recovery exit conditions of the air conditioning equipment; and when the operating parameters of the air conditioning equipment meet the recovery exit conditions, determining an adjusting valve body of the indoor unit as a target detection object.

In the technical scheme, when the air conditioning equipment runs in a refrigeration mode and successfully finishes refrigerant recovery, the detection valve body on the first main pipe is necessarily normal, at the moment, the detection valve body on the first main pipe can be operated for the second time at the maximum opening degree to ensure the stability of subsequent detection, after the operation of the refrigerant in the pipeline is more stable, then detecting the regulating valve body of the indoor machine, specifically, firstly obtaining the recovery exit condition of the air conditioning equipment, when the operation parameter meets the recovery exit condition, namely, the refrigerant recovery is finished, the target detection object is determined to be the regulating valve body of the indoor unit, the opening degree of the valve port of any one regulating valve body can be adjusted at the moment, and the other control valve bodies are kept unchanged, and whether the regulating valve body for regulating the opening degree of the valve port breaks down or not can be determined by observing the actual pipeline parameters and comparing the actual pipeline parameters with the theoretical pipeline parameters.

Wherein the recovery exit conditions comprise one or a combination of the following: the low pressure of the system is smaller than a certain threshold value, the high pressure of the system is larger than a certain threshold value, and the exhaust temperature is larger than a certain threshold value.

Among the above-mentioned technical scheme, according to refrigerant recovery parameter control valve body and off-premises station operation, specifically include: when the operation mode is a heating mode, determining the heat recovery frequency of a compressor in the outdoor unit and the heat recovery parameter interval of the air conditioning equipment; reducing the opening degree of a valve port of a detection valve body on the second main pipe and the opening degree of a valve port of an adjusting valve body of the outdoor unit; controlling the compressor to operate according to the heat recovery frequency; and when the operating parameters of the air conditioning equipment are in the heat recovery parameter interval, controlling the two detection valve bodies and the compressor to be closed.

In the technical scheme, after the refrigerant recovery parameter is obtained, the control valve body and the outdoor unit need to be controlled to operate respectively according to the refrigerant recovery parameter, the control object can be changed according to different operation modes, specifically, when the operation mode is a heating mode, the heat recovery frequency of the compressor in the outdoor unit and a heat recovery parameter interval are determined first, at this time, the opening degree of a valve port of the detection valve body on the second main pipe is controlled to be reduced, meanwhile, the opening degree of a valve port of the adjustment valve body on the side of the outdoor unit is controlled to be reduced, the compressor operates for a period of time according to the heat recovery frequency, and when the operation parameter is in the heat recovery parameter interval, the refrigerant recovery in the heating mode can be completed. After the refrigerant is recovered, the refrigerant in the pipeline can be transferred to the outdoor unit side, and the two detection valve bodies and the compressor can be closed at the moment, so that the pressure difference can be quickly established when the compressor is restarted next time, and the effect of quickly exchanging heat of the indoor unit is realized.

It can be understood that the heat recovery frequency and the heat recovery parameter interval are both preset parameters corresponding to the heating mode, and the sizes of the parameters are only related to the operation mode, so as to facilitate the operation of refrigerant recovery in the heating mode.

It should be noted that the first main pipe is a pipe section connected to the exhaust pipe of the compressor in the heating mode, and the pipe pressure of the first main pipe is relatively high, and the second main pipe is a pipe section connected to the return pipe of the compressor in the heating mode, and the pipe pressure of the second main pipe is relatively low.

In the above technical solution, determining target detection objects in all detection valve bodies and all adjustment valve bodies specifically includes: and after the compressor is controlled to operate for the third time according to the cold recovery frequency, determining the detection valve body on the second main pipe as a target detection object.

In the technical scheme, when the air conditioning equipment runs in a heating mode and a target detection object needs to be determined, the detection valve body on the second main pipe is detected firstly after the compressor runs for the third time, namely, the detection valve body on the second main pipe is used as the target detection object, at the moment, the opening degree of a valve port of the detection valve body on the second main pipe can be adjusted, the rest control valve bodies are kept unchanged, and whether the detection valve body on the second pipeline breaks down or not can be determined by observing actual pipeline parameters and comparing the actual pipeline parameters with theoretical pipeline parameters.

In the above technical solution, determining target detection objects in all detection valve bodies and all adjustment valve bodies specifically includes: controlling a detection valve body on the second main pipe to operate for a fourth time at the maximum opening degree; acquiring recovery exit conditions of the air conditioning equipment; and when the operating parameters of the air conditioning equipment meet the recovery exit condition, determining the regulating valve body of the outdoor unit as a target detection object.

In the technical scheme, when the air conditioning equipment runs in a heating mode and smoothly finishes the recovery of the refrigerant, the detection valve body on the second main pipe is necessarily normal, at the moment, the detection valve body on the second main pipe can be operated for the fourth time at the maximum opening degree to ensure the stability of subsequent detection, after the operation of the refrigerant in the pipeline is more stable, then detecting the regulating valve body of the outdoor unit, specifically, firstly obtaining the recovery exit condition of the air conditioning equipment, when the operation parameter meets the recovery exit condition, namely, the refrigerant recovery is finished, the target detection object is determined to be the regulating valve body of the outdoor unit, the opening degree of the valve port of any one regulating valve body can be adjusted at the moment, and the other control valve bodies are kept unchanged, and whether the regulating valve body for regulating the opening degree of the valve port breaks down or not can be determined by observing the actual pipeline parameters and comparing the actual pipeline parameters with the theoretical pipeline parameters.

In the above technical solution, determining whether the target detection object has a fault according to the actual pipeline parameter of the adjusted air conditioning equipment and the theoretical pipeline parameter corresponding to the valve port opening degree specifically includes: acquiring the operation pipeline parameters of the air conditioning equipment before adjustment; judging whether the actual pipeline parameters are different from the operating pipeline parameters or not, and generating a first judgment result; judging whether the actual pipeline parameters are 0.97-1.03 times of the theoretical pipeline parameters or not, and generating a second judgment result; and when the first judgment result and the second judgment result are both yes, determining that the target detection object has no fault, otherwise, determining that the target detection object has a fault.

In the technical scheme, when determining whether a target detection object has a fault, the method mainly comprises the steps of obtaining an operation pipeline parameter before adjustment, comparing an actual pipeline parameter with the operation pipeline parameter, and when the actual pipeline parameter and the operation pipeline parameter are different, indicating that the valve port opening degree adjustment of the target detection object causes certain parameter change, namely a first judgment result is yes, and further judging whether the actual pipeline parameter is within +/-3% of a theoretical pipeline parameter, namely 0.97-1.03 times, on the basis of the parameter change, so as to provide certain error for the detection of the actual pipeline parameter and reduce the possibility of false alarm of the fault, when a first judgment result is yes and a second judgment result is yes, proving that the target detection object can normally adjust the pipeline, when any judgment result, namely the first judgment result or the second judgment result is no, the target detection object cannot realize normal regulation on the pipeline, namely, a fault occurs.

An embodiment of a second aspect of the present invention provides an air conditioning apparatus comprising: an outdoor unit; each indoor unit is connected with the outdoor unit through a pipeline, and at least one control valve body is arranged on the pipeline; a processor and a memory, the processor being electrically connected to the control valve body, the memory having stored therein a program or instructions, the processor being configured to, upon execution of the program or instructions, implement the steps of the valve body detection method as described in the first aspect of the embodiment above.

According to a second aspect of the present invention, an air conditioning apparatus is provided, which includes an outdoor unit and a plurality of indoor units, and a processor and a memory. Each indoor unit is connected with the outdoor unit through a pipeline, one or more control valve bodies are arranged on the pipeline, the corresponding pipeline can be constrained by controlling the opening and closing of the one or more control valve bodies, or the opening of each control valve body can be adjusted to adjust the flow of the pipeline; the processor is electrically connected with the control valve body and is used for controlling the opening degree of the control valve body and even the opening and closing of some special valve bodies. The memory stores programs or instructions, and the processor is configured to implement the steps of the valve body detection method according to the first aspect when executing the programs or instructions, so that the air conditioning equipment of the present invention has all the beneficial effects of the valve body detection method according to any one of the embodiments described above, and details are not repeated herein.

Embodiments of the third aspect of the present invention provide a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of any of the valve body detection methods as described in the embodiments of the first aspect above.

Through the embodiment of the computer-readable storage medium of the present invention, a computer program is stored thereon, and when the computer program is executed by a processor, the steps of the valve body detection method in any of the above embodiments are implemented, so that all beneficial effects of the valve body detection method in any of the above embodiments are achieved, and details are not repeated herein.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 shows a schematic flow diagram of a valve body inspection method according to one embodiment of the invention;

FIG. 2 shows a schematic flow diagram of a valve body detection method according to an embodiment of the invention;

FIG. 3 shows a schematic flow diagram of a valve body detection method according to an embodiment of the invention;

FIG. 4 shows a schematic flow diagram of a valve body inspection method according to one embodiment of the invention;

FIG. 5 shows a schematic flow diagram of a valve body detection method according to an embodiment of the invention;

FIG. 6 shows a schematic flow diagram of a valve body detection method according to an embodiment of the invention;

FIG. 7 shows a schematic flow diagram of a valve body detection method according to an embodiment of the invention;

fig. 8 shows a schematic configuration diagram of an air conditioning apparatus according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 8 is:

800: an air conditioning device; 802: an outdoor unit; 804: an indoor unit; 806: a first main tube; 808: a second main pipe; 810: a control valve body; 812: detecting the valve body; 814: a regulating valve body; 816: a processor; 818: a memory.

Detailed Description

In order that the above objects, features and advantages of the embodiments of the present invention can be more clearly understood, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, embodiments of the present invention may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.

Some embodiments according to the invention are described below with reference to fig. 1 to 8.

Example one

As shown in fig. 1, the valve body detection method proposed in this embodiment includes: step S102: acquiring a refrigerant recovery parameter; step S104: controlling the valve body and the outdoor unit to operate according to the refrigerant recovery parameters so as to recover the refrigerant in the pipeline to a pipe section connected with an exhaust port of a compressor in the outdoor unit; step S106: determining target detection objects in all detection valve bodies and all adjusting valve bodies; step S108: adjusting the opening degree of a valve port of a target detection object; step S110: and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the opening degree of the valve port.

The valve body detection method is used for the air conditioning equipment, the air conditioning equipment comprises an outdoor unit and a plurality of indoor units, the indoor units are connected with the outdoor unit through pipelines, and one or more control valve bodies are arranged on the pipelines, so that the flow rate and the flow direction of a refrigerant in the pipelines can be adjusted under the action of the control valve bodies, and the air conditioning equipment can normally adjust the air. In the air conditioning equipment, when the valve body fails, the refrigerant is firstly recycled to the outdoor unit, and after a target detection object is determined, the valve opening is adjusted and whether the corresponding actual pipeline parameter changes greatly or not is detected to judge and realize the operation.

Example two

As shown in fig. 2, the valve body detection method proposed in this embodiment includes: step S202: acquiring a refrigerant recovery instruction; step S204: acquiring an operation mode of the air conditioning equipment according to the refrigerant recovery instruction; step S206: acquiring a refrigerant recovery parameter corresponding to the operation mode; step S208: controlling the valve body and the outdoor unit to operate according to the refrigerant recovery parameters so as to recover the refrigerant in the pipeline to a pipe section connected with an exhaust port of a compressor in the outdoor unit; step S210: determining target detection objects in all detection valve bodies and all adjusting valve bodies; step S212: adjusting the opening degree of a valve port of a target detection object; step S214: and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the opening degree of the valve port.

The valve body detection method is used for the air conditioning equipment, the air conditioning equipment comprises an outdoor unit and a plurality of indoor units, the indoor units are connected with the outdoor unit through pipelines, and one or more control valve bodies are arranged on the pipelines, so that the flow rate and the flow direction of a refrigerant in the pipelines can be adjusted under the action of the control valve bodies, and the air conditioning equipment can normally adjust the air. When the air conditioning equipment is used and the valve body is detected, whether a refrigerant recovery instruction is received or not is judged, and when the refrigerant recovery instruction is received, refrigerant recovery parameters corresponding to an operation mode can be determined according to the current operation mode of the air conditioning equipment. It can be understood that when the refrigerant is recovered, the control object of the air conditioner in the refrigeration mode is different from the control object of the air conditioner in the heating mode, the refrigerant recovery parameters are different, the operation mode is introduced, the valve body detection device is suitable for different use environments, different requirements of users are met, and meanwhile the valve body detection device can still detect the valve body, so that the detection range is greatly improved.

The method includes the steps that a part of a refrigerant is recycled to an outdoor unit, after a target detection object is determined, the refrigerant is judged and achieved by adjusting the opening degree of a valve port and detecting whether a corresponding actual pipeline parameter changes greatly, specifically, when a control valve body needs to be carried out, a refrigerant recycling parameter is obtained firstly, and control is carried out according to the refrigerant recycling parameter, and it can be understood that the refrigerant recycling parameter is an operation parameter which needs to be adjusted in order to enable the refrigerant to be recycled to one side of the outdoor unit in the operation process of the control valve body and the outdoor unit, for example, the opening degree of one or more valve ports in the control valve body, the operation frequency of a compressor in the outdoor unit and the like.

The refrigerant recovery command may be a command sent to the air conditioning equipment through wired or wireless communication. For example, the refrigerant recovery instruction can be directly input through a control panel arranged on the indoor unit or the outdoor unit, or the refrigerant recovery instruction can be sent out through communication modes such as infrared, bluetooth and WIFI with the indoor unit or the outdoor unit.

EXAMPLE III

As shown in fig. 3, the valve body detection method proposed in this embodiment includes: step S302: acquiring a refrigerant recovery instruction; step S304: acquiring an operation mode of the air conditioning equipment according to the refrigerant recovery instruction; step S306: when the operation mode is a refrigeration mode, determining the cold recovery frequency of a compressor in the outdoor unit and the cold recovery parameter interval of the air conditioning equipment; step S308: reducing the opening degree of a valve port of a detection valve body on the first main pipe and the opening degree of a valve port of an adjusting valve body of the indoor unit; step S310: controlling the compressor to operate according to the cold recovery frequency; step S312: when the operation parameters of the air conditioning equipment are in a cold recovery parameter interval, controlling the two detection valve bodies and the compressor to be closed; step S314: after the compressor is controlled to operate for the first time according to the cold recovery frequency, determining a detection valve body on a first main pipe as a target detection object; step S316: controlling a detection valve body on the first main pipe to operate for a second time at the maximum opening degree; step S318: acquiring recovery exit conditions of the air conditioning equipment; step S320: when the operation parameters of the air conditioning equipment meet the recovery exit conditions, determining an adjusting valve body of an indoor unit as a target detection object; step S322: adjusting the opening degree of a valve port of a target detection object; step S324: and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the opening degree of the valve port.

The valve body detection method is used for the air conditioning equipment, the air conditioning equipment comprises an outdoor unit and a plurality of indoor units, the indoor units are connected with the outdoor unit through pipelines, and one or more control valve bodies are arranged on the pipelines, so that the flow rate and the flow direction of a refrigerant in the pipelines can be adjusted under the action of the control valve bodies, and the air conditioning equipment can normally adjust the air. Furthermore, the outdoor unit is connected with one or more indoor units through pipelines, and the specifically connected pipelines are a first main pipe and a second main pipe, it can be understood that when the outdoor unit is connected with the indoor units, the first main pipe and the second main pipe are used as main pipelines, and for each indoor unit, a branch connected with the first main pipe and the second main pipe is arranged, so that the movement of the refrigerant is realized, and the normal operation of heat exchange is ensured. The control valve body comprises two detection valve bodies which are respectively arranged on the first main pipe and the second main pipe, and an adjusting valve body which is arranged on the pipeline and can adjust the refrigerant in the pipeline, after the refrigerant recovery parameters are obtained, the operation of the control valve body and the outdoor unit is required to be respectively controlled according to the refrigerant recovery parameters, and the control object can be changed according to the different operation modes.

When the operation mode is a refrigeration mode, the cold recovery frequency of a compressor in the outdoor unit and a cold recovery parameter interval are determined, at the moment, the opening degree of a valve port of a detection valve body on the first main pipe is controlled to be reduced, meanwhile, the opening degree of a valve port of an adjusting valve body on the indoor unit side is controlled to be reduced, the compressor operates for a period of time according to the cold recovery frequency, and when the operation parameter is in the cold recovery parameter interval, the refrigerant recovery in the refrigeration mode can be completed. After the refrigerant is recovered, the refrigerant in the pipeline can be transferred to the outdoor unit side, and the two detection valve bodies and the compressor can be closed at the moment, so that the pressure difference can be quickly established when the compressor is restarted next time, and the effect of quickly exchanging heat of the indoor unit is realized.

When the air conditioning equipment runs in a refrigeration mode and a target detection object needs to be determined, the detection valve body on the first main pipe is detected firstly after the compressor runs for the first time, namely, the detection valve body on the first main pipe is used as the target detection object, the opening degree of a valve port of the detection valve body on the first main pipe can be adjusted at the moment, the rest control valve bodies are kept unchanged, and whether the detection valve body on the first pipe breaks down or not can be determined by observing actual pipeline parameters and comparing the actual pipeline parameters with theoretical pipeline parameters.

When the air conditioning equipment runs in a refrigeration mode and successfully finishes the recovery of the refrigerant, the detection valve body on the first main pipe is necessarily normal, at the moment, the detection valve body on the first main pipe can be operated for the second time at the maximum opening degree to ensure the stability of subsequent detection, after the operation of the refrigerant in the pipeline is more stable, then detecting the regulating valve body of the indoor machine, specifically, firstly obtaining the recovery exit condition of the air conditioning equipment, when the operation parameter meets the recovery exit condition, namely, the refrigerant recovery is finished, the target detection object is determined to be the regulating valve body of the indoor unit, the opening degree of the valve port of any one regulating valve body can be adjusted at the moment, and the other control valve bodies are kept unchanged, and whether the regulating valve body for regulating the opening degree of the valve port breaks down or not can be determined by observing the actual pipeline parameters and comparing the actual pipeline parameters with the theoretical pipeline parameters.

Example four

As shown in fig. 4, the valve body detection method proposed in this embodiment includes: step S402: acquiring a refrigerant recovery instruction; step S404: acquiring an operation mode of the air conditioning equipment according to the refrigerant recovery instruction; step S406: when the operation mode is a heating mode, determining the heat recovery frequency of a compressor in the outdoor unit and the heat recovery parameter interval of the air conditioning equipment; step S408: reducing the opening degree of a valve port of a detection valve body on the second main pipe and the opening degree of a valve port of an adjusting valve body of the outdoor unit; step S410: controlling the compressor to operate according to the heat recovery frequency; step S412: when the operation parameters of the air conditioning equipment are in the heat recovery parameter interval, controlling the two detection valve bodies and the compressor to be closed; step S414: after the compressor is controlled to operate for the third time according to the cold recovery frequency, determining a detection valve body on the second main pipe as a target detection object; step S416: controlling a detection valve body on the second main pipe to operate for a fourth time at the maximum opening degree; step S418: acquiring recovery exit conditions of the air conditioning equipment; step S420: when the operation parameters of the air conditioning equipment meet the recovery exit conditions, determining an adjusting valve body of the outdoor unit as a target detection object; step S422: adjusting the opening degree of a valve port of a target detection object; step S424: and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the opening degree of the valve port.

After the refrigerant recovery parameter is obtained, the control valve body and the outdoor unit need to be controlled to operate respectively according to the refrigerant recovery parameter, and according to the difference of operation modes, a control object can be changed, specifically, when the operation mode is a heating mode, the heat recovery frequency of a compressor in the outdoor unit and a heat recovery parameter interval are determined first, at this time, the opening degree of a valve port of a detection valve body on the second main pipe is controlled to be reduced, meanwhile, the opening degree of a valve port of an adjusting valve body on the side of the outdoor unit is controlled to be reduced, the compressor operates for a period of time according to the heat recovery frequency, and when the operation parameter is in the heat recovery parameter interval, the refrigerant recovery in the heating mode can be completed. After the refrigerant is recovered, the refrigerant in the pipeline can be transferred to the outdoor unit side, and the two detection valve bodies and the compressor can be closed at the moment, so that the pressure difference can be quickly established when the compressor is restarted next time, and the effect of quickly exchanging heat of the indoor unit is realized.

When the air conditioning equipment runs in a heating mode and a target detection object needs to be determined, the detection valve body on the second main pipe is detected firstly after the compressor runs for the third time, namely, the detection valve body on the second main pipe is used as the target detection object, at the moment, the opening degree of a valve port of the detection valve body on the second main pipe can be adjusted, the rest control valve bodies are kept unchanged, and whether the detection valve body on the second pipeline breaks down or not can be determined by observing actual pipeline parameters and comparing the actual pipeline parameters with theoretical pipeline parameters.

When the air conditioning equipment runs in a heating mode and successfully finishes the recovery of the refrigerant, the detection valve body on the second main pipe is necessarily normal, and at the moment, the detection valve body on the second main pipe can be operated for the fourth time at the maximum opening degree to ensure the stability of subsequent detection, after the operation of the refrigerant in the pipeline is more stable, then detecting the regulating valve body of the outdoor unit, specifically, firstly obtaining the recovery exit condition of the air conditioning equipment, when the operation parameter meets the recovery exit condition, namely, the refrigerant recovery is finished, the target detection object is determined to be the regulating valve body of the outdoor unit, the opening degree of the valve port of any one regulating valve body can be adjusted at the moment, and the other control valve bodies are kept unchanged, and whether the regulating valve body for regulating the opening degree of the valve port breaks down or not can be determined by observing the actual pipeline parameters and comparing the actual pipeline parameters with the theoretical pipeline parameters.

EXAMPLE five

As shown in fig. 5, the valve body detection method proposed in this embodiment includes: step S502: acquiring a refrigerant recovery parameter; step S504: controlling the valve body and the outdoor unit to operate according to the refrigerant recovery parameters so as to recover the refrigerant in the pipeline to a pipe section connected with an exhaust port of a compressor in the outdoor unit; step S506: determining target detection objects in all detection valve bodies and all adjusting valve bodies; step S508: adjusting the opening degree of a valve port of a target detection object; step S510: acquiring the operation pipeline parameters of the air conditioning equipment before adjustment; step S512: judging whether the actual pipeline parameters are different from the operating pipeline parameters or not, and generating a first judgment result; step S514: judging whether the actual pipeline parameters are 0.97-1.03 times of the theoretical pipeline parameters or not, and generating a second judgment result; step S516: and when the first judgment result and the second judgment result are both yes, determining that the target detection object has no fault, otherwise, determining that the target detection object has a fault.

When determining whether a target detection object has a fault, the method mainly comprises the steps of obtaining an operation pipeline parameter before adjustment, comparing an actual pipeline parameter with the operation pipeline parameter, when the actual pipeline parameter and the operation pipeline parameter are different, determining that the valve port opening degree adjustment of the target detection object causes certain parameter change, namely a first judgment result is yes, further determining whether the actual pipeline parameter is within +/-3% of a theoretical pipeline parameter, namely 0.97-1.03 times, on the basis of the parameter change, providing certain error for the detection of the actual pipeline parameter so as to reduce the possibility of false fault alarm, when a first judgment result is yes and a second judgment result is yes, proving that the target detection object can normally adjust the pipeline, and when any judgment result, namely the first judgment result or the second judgment result is no, determining that the target detection object can not normally adjust the pipeline, i.e. a failure occurs.

EXAMPLE six

As shown in fig. 6 and 8, a more specific valve body detection method provided in this embodiment is used for an air conditioning apparatus 800 including an outdoor unit 802 and a plurality of indoor units 804, where the air conditioning apparatus 800 includes an outdoor unit electronic expansion valve (i.e., the adjustment valve body 814 of the outdoor unit 802), an indoor unit electronic expansion valve (i.e., the adjustment valve body 814 of the indoor unit 804), an air side ball valve (i.e., the detection valve body 812 on the first main pipe 806), a liquid side ball valve (i.e., the detection valve body 812 on the second main pipe 808), and the air side ball valve and the liquid side ball valve serve as key functions of intercepting a refrigerant and establishing a pressure difference between high and low pressure and throttling of the refrigerant in a system. Refrigerant cut-off devices (namely, a gas side ball valve and a liquid side ball valve) are respectively added on a gas pipe side and a liquid pipe side of the tail end of the system (namely, the pipeline position where the outdoor unit 802 is connected with the indoor unit 804), and corresponding control logic is added in system control, so that a valve body in the system can be subjected to fault diagnosis, whether the valve body 812 fails or not can be detected, the running condition of key elements of the air conditioning equipment 800 can be monitored, and the good running of a unit can be ensured.

The air conditioning apparatus 800 is in a cooling mode, and the valve body detection method includes: step S602: controlling the outdoor machine to perform cooling operation; step S604: judging whether a shutdown requirement is received; upon receiving the shutdown request, step S606 is executed: entering a refrigerant recovery mode; when the shutdown request is not received, step S608 is executed: controlling the outdoor unit to normally operate, and keeping the electric ball valve in a normally open state; step S610: controlling the frequency of the compressor to stably run for t minutes at A1Hz, reducing the opening of the air side ball valve to B1pls, and keeping other valve bodies unchanged; step S612: if the system parameters are changed and the system parameters are within +/-3% of the target values compared with the target values, determining that the gas side ball valve has no fault, otherwise, determining that the gas side ball valve has the fault; step S614: controlling the gas side ball valve to run for t minutes at the maximum opening degree, reducing the opening degree of the electronic expansion valve of the internal machine to B1pls, and keeping other valve bodies unchanged; step S616: and if the system parameters are changed and the system parameters are within +/-3% of the target value compared with the target value, determining that the internal machine electronic expansion valve has no fault, otherwise, determining that the internal machine electronic expansion valve has the fault.

Further, when the outdoor unit operates in a refrigerating mode, a pump down control logic is entered through a combined menu, the frequency of the compressor is adjusted to A1Hz for operation, after the operation is stabilized for t min, the air side ball valve is adjusted to the minimum opening degree B1pls for operation, the rest valve bodies are kept unchanged, the state parameter changes of high and low pressure, exhaust temperature and the like before and after the air side ball valve acts are observed, and the state parameter changes are compared with a set target value; after the pump down exit condition is met, the gas side ball valve is restored to a normal opening (maximum opening) to operate, after the operation is stabilized for t min, the internal valve is adjusted to a minimum opening B1pls to operate, and meanwhile, the change of system state parameters before and after the valve body acts is observed and compared with a set target value. If the high pressure and the low pressure are not changed or the difference between the high pressure and the low pressure and the target value is more after the valve body acts, the action failure of the valve body can be judged.

Wherein, the pump down control logic is as follows: the opening degree of an internal machine valve body and a gas side ball valve is adjusted to be minimum, an external machine main valve and a liquid side ball valve are kept unchanged in original opening degree until a system reaches a target state, the gas side ball valve and the liquid side ball valve are completely closed, and then the compressor is stopped (during fault detection, single variable debugging is carried out, namely only one valve body acts during each action, and the other valve body is adjusted to be maximum opening degree).

The cold medium in the pipeline includes but is not limited to R32, R410, and other types, whether toxic or not, and whether pollution exists or not, as long as cold can be carried for heat exchange.

Specifically, A1 is 30 Hz-50 Hz, B1 is 30 pls-50 pls, and the pump down exit condition is that the system low pressure P1 is less than a Mpa; the exhaust temperature is more than or equal to b ℃; the high pressure P2 of the system is more than or equal to c Mpa, a is 0.1Mpa to 0.2Mpa, b is 110 ℃ to 120 ℃, and c is 4.0Mpa to 4.2 Mpa.

EXAMPLE seven

As shown in fig. 7 and fig. 8, a more specific valve body detection method provided in this embodiment is used for an air conditioning apparatus 800 including an outdoor unit 802 and a plurality of indoor units 804, where the air conditioning apparatus 800 includes an outdoor unit electronic expansion valve (i.e., the adjustment valve body 814 of the outdoor unit 802), an indoor unit electronic expansion valve (i.e., the adjustment valve body 814 of the indoor unit 804), an air side ball valve (i.e., the detection valve body 812 on the first main pipe 806), a liquid side ball valve (i.e., the detection valve body 812 on the second main pipe 808), and the air side ball valve and the liquid side ball valve serve as key functions of intercepting a refrigerant and establishing a pressure difference between high pressure and low pressure and throttling of the refrigerant in a system. Refrigerant cut-off devices (namely, a gas side ball valve and a liquid side ball valve) are respectively added on a gas pipe side and a liquid pipe side of the tail end of the system (namely, the pipeline position where the outdoor unit 802 is connected with the indoor unit 804), and corresponding control logic is added in system control, so that a valve body in the system can be subjected to fault diagnosis, whether the valve body 812 fails or not can be detected, the running condition of key elements of the air conditioning equipment 800 can be monitored, and the good running of a unit can be ensured.

The air conditioning apparatus 800 is in a heating mode, and the valve body detection method includes: step S702: controlling the heating operation of the outdoor unit; step S704: judging whether a shutdown requirement is received; upon receiving the shutdown request, step S706 is executed: entering a refrigerant recovery mode; when the shutdown demand is not received, step S708 is executed: controlling the outdoor unit to normally operate, and keeping the electric ball valve in a normally open state; step S710: controlling the frequency of the compressor to stably run for t minutes at A1Hz, reducing the opening of the liquid side ball valve to B1pls, and keeping other valve bodies unchanged; step S712: if the system parameters are changed and the system parameters are within +/-3% of the target values compared with the target values, determining that the liquid side ball valve has no fault, otherwise determining that the liquid side ball valve has the fault; step S714: controlling the liquid side ball valve to run for t minutes at the maximum opening degree, reducing the opening degree of the electronic expansion valve of the outdoor unit to B1pls, and keeping other valve bodies unchanged; step S716: and if the system parameters are changed and the system parameters are within +/-3% of the target value compared with the target value, determining that the electronic expansion valve of the outdoor unit has no fault, otherwise, determining that the electronic expansion valve of the outdoor unit has the fault.

Further, when the external unit is in heating operation, a pump out control logic is entered through a combination menu, the frequency of the compressor is adjusted to be A1Hz for operation, the liquid side ball valve is adjusted to be the minimum opening B1pls for operation, other valve bodies keep the original opening unchanged, the changes of state parameters such as high and low pressures, exhaust temperature and the like before and after the action of the gas side ball valve are observed and compared with a set target value; and after the pump out exit condition is met, the liquid side ball valve is restored to the normal opening (maximum opening) to operate, after the operation is stable, the outer valve is adjusted to the minimum opening B1pls to operate, and meanwhile, the change of system state parameters before and after the valve body acts is observed and compared with a set target value. If the high pressure and the low pressure of the valve body of the outer main valve are not changed or the difference between the high pressure and the low pressure and the target value is more after the valve body of the outer main valve acts, the action failure of the valve body can be judged.

Wherein, the pump out control logic is as follows: the opening of the internal valve body and the air side ball valve are kept unchanged, the opening of the external main valve and the opening of the liquid side ball valve are adjusted to be minimum until the system reaches a target state, the air side ball valve and the liquid side ball valve are completely closed, and then the compressor is stopped (during fault detection, single variable debugging is carried out, namely only one valve body acts during each action, and the other valve body is adjusted to be maximum opening).

Example eight

As shown in fig. 8, an air conditioning apparatus 800 according to the present embodiment includes an outdoor unit 802, a plurality of indoor units 804, a processor 816 and a memory 818. Wherein, each indoor unit 804 is connected with the outdoor unit 802 through a pipeline, and at least one control valve 810 is arranged on the pipeline; the processor 816 is electrically connected to the control valve body 810 for controlling the control valve body 810. The memory 818 stores programs or instructions, and the processor 816 is configured to implement the steps of the valve body detection method in any one of the embodiments described above when executing the programs or instructions, so that the air conditioning apparatus 800 of the present invention has all the beneficial effects of the valve body detection method in any one of the embodiments described above, and therefore, the description thereof is omitted.

Example nine

The present embodiment provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the valve body detection method in any of the above embodiments are implemented, so that all the beneficial effects of the valve body detection method in any of the above embodiments are achieved, and details are not repeated herein.

According to the valve body detection method and the air conditioning equipment provided by the invention, in the process of refrigerant recovery, the fault detection is carried out by determining the actual pipeline parameters through the change of the system state, namely, the opening degree of the valve opening is adjusted, and whether the action of the control valve body is normal or not is detected, so that the running condition monitoring of unit components can be realized, and the normal running of the whole unit is ensured.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve body detection method is characterized by being used for air conditioning equipment, wherein the air conditioning equipment comprises an outdoor unit and at least one indoor unit connected with the outdoor unit through a pipeline, at least one control valve body is arranged on the pipeline, and the valve body detection method comprises the following steps:

acquiring a refrigerant recovery parameter;

controlling the control valve body and the outdoor unit to operate according to the refrigerant recovery parameters so as to recover the refrigerant in the pipeline to a pipe section connected with an exhaust port of a compressor in the outdoor unit;

determining target detection objects in all the control valve bodies;

adjusting the opening degree of a valve port of the target detection object;

and determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the valve port opening.

2. The valve body detection method according to claim 1, further comprising, before the obtaining of the refrigerant recovery parameter:

acquiring a refrigerant recovery instruction;

acquiring an operation mode of the air conditioning equipment according to the refrigerant recovery instruction;

the acquiring of the refrigerant recovery parameters specifically includes:

and acquiring a refrigerant recovery parameter corresponding to the operation mode.

3. The valve body detecting method of claim 2, wherein the outdoor unit and at least one of the indoor units are connected to each other through a first main pipe and a second main pipe, and the control valve body comprises: two detect valve bodies and at least one regulating valve body, two detect the valve body and locate respectively on the first person in charge with the second is responsible for, according to refrigerant recovery parameter control the control valve body with the off-premises station operation specifically includes:

when the operation mode is a refrigeration mode, determining the cold recovery frequency of a compressor in the outdoor unit and the cold recovery parameter interval of the air conditioning equipment;

reducing the opening degree of a valve port of the detection valve body on the first main pipe and the opening degree of a valve port of the regulating valve body of the indoor unit;

controlling the compressor to operate according to the cold recovery frequency;

and when the operating parameter of the air conditioning equipment is in the cold recovery parameter interval, controlling the two detection valve bodies and the compressor to be closed.

4. The valve body detection method according to claim 3, wherein the determining of the target detection object in all the control valve bodies specifically comprises:

and after the compressor is controlled to operate for the first time according to the cold recovery frequency, determining the detection valve body on the first main pipe as a target detection object.

5. The valve body detection method according to claim 3, wherein the determining of the target detection object in all the control valve bodies specifically comprises:

controlling the detection valve body on the first main pipe to run for a second time at the maximum opening degree;

acquiring a recovery exit condition of the air conditioning equipment;

and when the operating parameters of the air conditioning equipment meet the recovery exit conditions, determining that the regulating valve body of the indoor unit is a target detection object.

6. The valve body detection method according to claim 3, wherein the controlling the operation of the control valve body and the outdoor unit according to the refrigerant recovery parameter specifically comprises:

when the operation mode is a heating mode, determining the heat recovery frequency of a compressor in the outdoor unit and the heat recovery parameter interval of the air conditioning equipment;

reducing the opening degree of a valve port of the detection valve body on the second main pipe and the opening degree of a valve port of the regulating valve body of the outdoor unit;

controlling the compressor to operate according to the heat recovery frequency;

and when the operating parameters of the air conditioning equipment are in the heat recovery parameter interval, controlling the two detection valve bodies and the compressor to be closed.

7. The valve body detection method according to claim 6, wherein the determining of the target detection object in all the control valve bodies specifically comprises:

and after the compressor is controlled to operate for a third time according to the cold recovery frequency, determining the detection valve body on the second main pipe as a target detection object.

8. The valve body detection method according to claim 6, wherein the determining of the target detection object in all the control valve bodies specifically comprises:

controlling the detection valve body on the second main pipe to run for a fourth time at the maximum opening degree;

acquiring a recovery exit condition of the air conditioning equipment;

and when the operation parameters of the air conditioning equipment meet the recovery exit condition, determining that the regulating valve body of the outdoor unit is a target detection object.

9. The valve body detection method according to any one of claims 1 to 8, wherein the determining whether the target detection object has a fault according to the adjusted actual pipeline parameter of the air conditioning equipment and the theoretical pipeline parameter corresponding to the valve port opening degree specifically includes:

acquiring the operation pipeline parameters of the air conditioning equipment before adjustment;

judging whether the actual pipeline parameters are different from the operating pipeline parameters or not, and generating a first judgment result;

judging whether the actual pipeline parameter is 0.97-1.03 times of the theoretical pipeline parameter or not, and generating a second judgment result;

and when the first judgment result and the second judgment result are both yes, determining that the target detection object has no fault, otherwise, determining that the target detection object has a fault.

10. An air conditioning apparatus, characterized by comprising:

an outdoor unit;

each indoor unit is connected with the outdoor unit through a pipeline, and at least one control valve body is arranged on the pipeline;

a processor electrically connected to the control valve body and a memory having stored therein a program or instructions for implementing the steps of the valve body detection method according to any one of claims 1 to 9 when executed.

11. A readable storage medium on which a program or instructions are stored, characterized in that said program or instructions, when executed by a processor, implement the steps of the valve body detection method according to any one of claims 1 to 9.