CN116242010A

CN116242010A - Method and device for detecting refrigerant leakage, air conditioner and storage medium

Info

Publication number: CN116242010A
Application number: CN202310140738.7A
Authority: CN
Inventors: 闫虹帆; 牛春雷; 罗祖春; 孙良凯
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-06-09

Abstract

The application relates to the technical field of air conditioners, and discloses a method for detecting refrigerant leakage, which comprises the following steps: acquiring the running state of a compressor of an air conditioner; determining a target detection position according to the running state of the compressor; and determining the leakage condition of the refrigerant according to the preset parameters corresponding to the target detection position. Thus, the target detection position is matched with the running state of the compressor, and the preset parameters are correspondingly matched with the target detection position. Therefore, the effective and accurate representation of the preset parameters on whether the refrigerant leaks can be ensured, so that the refrigerant leakage condition can be more accurately determined. The application also discloses a device for detecting refrigerant leakage, an air conditioner and a storage medium.

Description

Method and device for detecting refrigerant leakage, air conditioner and storage medium

Technical Field

The present application relates to the field of air conditioning technologies, and for example, to a method and apparatus for detecting refrigerant leakage, an air conditioner, and a storage medium.

Background

The air conditioner exchanges heat with air by using the refrigerant, thereby achieving the purposes of refrigeration and heating. Leakage of the refrigerant can bring potential safety hazards, especially for some flammable and explosive refrigerants.

The related art discloses a method for detecting refrigerant leakage, wherein when a first concentration detected by a refrigerant sensor of an air conditioner is larger than a preset concentration, preset processing is executed to reduce the refrigerant concentration at a detection position where the refrigerant sensor is positioned; after the preset treatment is executed, obtaining the second concentration detected by the refrigerant sensor; judging whether refrigerant leakage exists according to the second concentration.

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:

whether the refrigerant leaks or not can not be accurately detected.

It should be noted that the information disclosed in the foregoing background section is only for enhancing understanding of the background of the present application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.

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, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows.

The embodiment of the disclosure provides a method and a device for detecting refrigerant leakage, an air conditioner and a storage medium, so as to improve the accuracy of detecting whether the refrigerant leakage occurs.

In some embodiments, the method for detecting refrigerant leakage includes: acquiring the running state of a compressor of an air conditioner; determining a target detection position according to the running state of the compressor; and determining the leakage condition of the refrigerant according to the preset parameters corresponding to the target detection position.

In some embodiments, the device for detecting refrigerant leakage includes: the device comprises a processor and a memory storing program instructions, wherein the processor is configured to execute the method for detecting refrigerant leakage when the program instructions are executed.

In some embodiments, the air conditioner includes: an air conditioner body; a compressor; and the device for detecting the leakage of the refrigerant is arranged on the air conditioner body.

In some embodiments, the storage medium stores program instructions that, when executed, perform the aforementioned method for detecting refrigerant leakage.

The method, the device, the air conditioner and the storage medium for detecting the refrigerant leakage provided by the embodiment of the disclosure can realize the following technical effects:

firstly, acquiring the running state of a compressor, and determining a target detection position to be detected based on the running state. And then determining whether the refrigerant leaks or not based on preset parameters corresponding to the target detection position. Thus, the target detection position is matched with the running state of the compressor, and the preset parameters are correspondingly matched with the target detection position. Therefore, the effective and accurate representation of the preset parameters on whether the refrigerant leaks can be ensured, so that the refrigerant leakage condition can be more accurately determined.

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 and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which like reference numerals refer to similar elements, and in which:

FIG. 1 is a schematic diagram of a method for detecting refrigerant leakage according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another method for detecting refrigerant leakage provided by an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of another method for detecting refrigerant leakage provided by an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of another method for detecting refrigerant leakage provided by an embodiment of the present disclosure;

FIG. 5 is a schematic illustration of an application of an embodiment of the present disclosure for detecting refrigerant leakage;

FIG. 6 is a schematic illustration of another application of an embodiment of the present disclosure for detecting refrigerant leakage;

FIG. 7 is a schematic diagram of an apparatus for detecting refrigerant leakage according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of another apparatus for detecting refrigerant leakage provided by an embodiment of the present disclosure;

fig. 9 is a schematic view of an air conditioner provided in an embodiment of the present disclosure.

Detailed Description

So that the manner in which the features and techniques of the disclosed embodiments can be understood in more detail, a more particular description of the embodiments of the disclosure, briefly summarized below, may be had by reference to the appended drawings, which are not intended to be limiting of the embodiments of the disclosure. 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 still be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawing.

The terms first, second and the like in the description and in the claims of the embodiments of the disclosure and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the present disclosure. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The term "plurality" means two or more, unless otherwise indicated.

In the embodiment of the present disclosure, the character "/" indicates that the front and rear objects are an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes an object, meaning that there may be three relationships. For example, a and/or B, represent: a or B, or, A and B.

The term "corresponding" may refer to an association or binding relationship, and the correspondence between a and B refers to an association or binding relationship between a and B.

Referring to fig. 1, an embodiment of the disclosure provides a method for detecting refrigerant leakage, including:

s101, the air conditioner acquires the running state of a compressor of the air conditioner.

S102, the air conditioner determines a target detection position according to the running state of the compressor.

S103, the air conditioner determines the leakage condition of the refrigerant according to the preset parameters corresponding to the target detection position.

Firstly, the running state of a compressor of an air conditioner is obtained. The running state comprises: a start-up state, a steady operation state, and a stop operation state. Optionally, the operating state of the compressor is determined by the operating frequency of the compressor. For example, when the frequency is continuously rising, the operation state is determined to be the start-up state. When the frequency is unchanged, the operating state is determined to be a stable operating state. When the frequency is zero, the operating state is determined to be a stop operating state. When the compressors are in different running states, the positions where the refrigerant is easy to leak or the positions where the refrigerant can leak can be represented differently. Thus, the target detection position is determined according to the operation state of the compressor.

At different target detection positions, the parameters which can represent the leakage of the refrigerant are different. Therefore, different preset parameters are selected at different target detection positions to determine the refrigerant leakage condition. The target detection position is provided with a sensor so as to acquire a preset parameter corresponding to the target detection position. And determining the leakage condition of the refrigerant according to the acquired preset parameters, namely determining whether the refrigerant leaks or not.

By adopting the method for detecting refrigerant leakage provided by the embodiment of the disclosure, the running state of the compressor is firstly obtained, and the target detection position to be detected is determined based on the running state. And then determining whether the refrigerant leaks or not based on preset parameters corresponding to the target detection position. Thus, the target detection position is matched with the running state of the compressor, and the preset parameters are correspondingly matched with the target detection position. Therefore, the effective and accurate representation of the preset parameters on whether the refrigerant leaks can be ensured, so that the refrigerant leakage condition can be more accurately determined.

Referring to fig. 2, another method for detecting refrigerant leakage according to an embodiment of the present disclosure includes:

And S112, determining the target detection positions as the inside of the indoor unit electric control box and the inside of the outdoor unit electric control box under the condition that the running state of the compressor is the starting state.

S122, determining that the target detection position is a pipeline of the indoor heat exchanger when the running state of the compressor is a stable running state.

And S132, when the running state of the compressor is the running stop state, the air conditioner determines that the target detection position is below the indoor unit.

After the air conditioner receives the starting instruction, the compressor is started. When the compressor is started and is not running stably, the frequency of the compressor is increased continuously, and the evaporation pressure and the condensation pressure of the system are unstable. If the refrigerant leakage is invalid by detecting the pressure. And because the electric cabinet can possibly have electric leakage, if electric spark exists, refrigerant leakage occurs simultaneously, and the electric cabinet is the position that most probably causes the explosion. Therefore, the target detection positions are determined to be the inside of the indoor unit electric control box body and the inside of the outdoor unit electric control box body.

After a period of operation of the compressor, the frequency tends to stabilize. When the compressor is in a steady operation state, the evaporating pressure and the condensing pressure are not substantially changed and are stabilized to fluctuate within a range. Therefore, the target detection position is determined to be the pipeline of the indoor heat exchanger.

And after the air conditioner receives the shutdown instruction, the compressor stops running. When the compressor is in a stop operation state, if the refrigerant leaks, the refrigerant is concentrated at a position below the indoor unit (indoor hanging machine). Thus determining the target detection position as being below the indoor unit.

Therefore, the target detection position is determined based on the different running states of the compressor, so that the parameters acquired at the target detection position can more effectively represent whether the refrigerant leaks or not, and the refrigerant leakage condition is accurately determined.

Referring to fig. 3, another method for detecting refrigerant leakage according to an embodiment of the present disclosure includes:

S113, after executing S112 or S132, the air conditioner determines the leakage condition of the refrigerant according to the change condition of the concentration of the refrigerant.

S123, after the air conditioner executes S122, the leakage condition of the refrigerant is determined according to the pressure change condition of the pipeline of the indoor heat exchanger.

When the target detection position is in the indoor unit electric control box body and the outdoor unit electric control box body or below the indoor unit, if the refrigerant leaks, the refrigerant can be detected in the air. Namely, the concentration of the refrigerant can represent whether the refrigerant leaks or not. Therefore, when the target detection positions are the two positions, the refrigerant leakage condition can be determined according to the change condition of the refrigerant concentration. The change condition of the refrigerant concentration comprises: after a preset period of time, the variation of the refrigerant concentration or the variation rate of the refrigerant concentration.

When the target detection position is the pipeline of the indoor heat exchanger, if the refrigerant leaks, the pressure of the pipeline can change. I.e. the pressure of the pipeline can be used for indicating whether the refrigerant leaks or not. Therefore, when the target detection position is the pipeline of the indoor heat exchanger, the leakage condition of the refrigerant can be determined according to the change condition of the pressure of the pipeline. The pressure change conditions of the pipeline comprise: after a preset period of time, the amount of change in pressure or the rate of change in pressure.

In this way, the appropriate preset parameters are monitored based on the influence on the surrounding environment or the air conditioning components when the refrigerant leaks at the target detection position. And then, whether the refrigerant leaks or not is determined according to the change condition of the preset parameters, so that the accuracy of a determination result is ensured.

Optionally, in step S113, the air conditioner determines the leakage condition of the refrigerant according to the change condition of the concentration of the refrigerant, including:

the air conditioner obtains the refrigerant concentration change value before and after the compressor runs for a set period of time in the current running state.

And under the condition that the concentration change value of the refrigerant is larger than the corresponding concentration threshold value, the air conditioner determines that the refrigerant has leakage risk.

And under the condition that the concentration change value of the refrigerant is smaller than or equal to the corresponding concentration threshold value, the air conditioner determines that the refrigerant is free from leakage risk.

When the compressor is operated in the current operation state, the concentration of the refrigerant is obtained. And after the set time length, acquiring the concentration of the refrigerant again. And determining a refrigerant concentration change value according to the concentration of the refrigerant acquired twice before and after the set time length. The concentration threshold is set and stored in advance in the processor of the air conditioner. As can be seen from the foregoing, the change in the refrigerant concentration may be a change in the refrigerant concentration or a change in the refrigerant concentration rate. Therefore, the refrigerant concentration change value may be a refrigerant concentration change amount or a refrigerant concentration change rate. When the refrigerant concentration variation is adopted, the corresponding concentration threshold value is a concentration variation threshold value. When the refrigerant concentration change rate is adopted, the corresponding concentration threshold value is the concentration change rate threshold value. And comparing the refrigerant concentration change value with the corresponding concentration threshold value. If the refrigerant concentration change value is larger than the corresponding concentration threshold value, determining that the refrigerant has leakage risk. If the refrigerant concentration change value is smaller than or equal to the corresponding concentration threshold value, determining that the refrigerant is free of leakage risk.

Specifically, when the operation state of the compressor is a start state:

and acquiring the refrigerant concentration A1 in the electric control box of the indoor unit and the refrigerant concentration B1 in the electric control box of the outdoor unit. And after the first set time period t1, acquiring the refrigerant concentration A2 in the electric control box of the indoor unit and the refrigerant concentration B2 in the electric control box of the outdoor unit again.

In one embodiment, the concentration variation Δa=a2-A1 in the indoor unit electric cabinet and the concentration variation Δb=b2-B1 in the outdoor unit electric cabinet are calculated. If Δa > S1 or Δb > S2, it is determined that the refrigerant has a leakage risk. If delta A is less than or equal to S1 and delta B is less than or equal to S2, the refrigerant is determined to have no leakage risk. Wherein S1 is the refrigerant concentration variation threshold in the electric cabinet of the indoor unit, and S2 is the refrigerant concentration variation threshold in the electric cabinet of the outdoor unit.

In another embodiment, the concentration change rate V in the electric cabinet of the indoor unit is calculated _A = (A2-A1)/t 1, concentration change rate V in electric cabinet of outdoor unit _B = (B2-B1)/t 1. If V is _A >R1 or V _B >And R2, determining that the refrigerant has leakage risk. If V is _A R1 and V are less than or equal to _B And R2 is less than or equal to, determining that the refrigerant has no leakage risk. Wherein, R1 is the refrigerant concentration change rate threshold in the indoor unit electric cabinet, and R2 is the refrigerant concentration change rate threshold in the outdoor unit electric cabinet.

When the operation state of the compressor is a shutdown state:

and acquiring the refrigerant concentration C1 below the indoor unit. And after the second set time period t2, acquiring the refrigerant concentration C2 below the indoor unit again.

In one embodiment, the concentration variation Δc=c2—c1 below the indoor unit is calculated. If DeltaC > W, the refrigerant is determined to have a leakage risk. If the delta C is less than or equal to W, the refrigerant is determined to have no leakage risk. Wherein W is the threshold value of the concentration variation of the refrigerant below the indoor unit.

In another embodiment, the concentration change rate V below the indoor unit is calculated _C = (C2-C1)/t 2. If V is _C >And U, determining that the refrigerant has leakage risk. If V is _C And if the temperature is less than or equal to U, determining that the refrigerant does not have leakage risk. Wherein U is the refrigerant concentration change rate threshold below the indoor unit.

Optionally, in step S123, the air conditioner determines the leakage condition of the refrigerant according to the pressure change condition of the pipeline of the indoor heat exchanger, where the determining includes:

under the condition that the compressor runs for a first preset time period at a preset frequency, the air conditioner obtains pressure change values of pipelines of the indoor heat exchanger before and after a second preset time period.

And under the condition that the pressure change value is larger than the corresponding pressure threshold value, the air conditioner determines that the refrigerant has leakage risk.

And under the condition that the pressure change value is smaller than or equal to the corresponding pressure threshold value, the air conditioner determines that the refrigerant is free from leakage risk.

When the compressor is in a stable operation state, the preset frequency is the frequency of the stable operation of the compressor. And after the compressor runs at the preset frequency for a first preset time period t3, acquiring the pressure P1 of the pipeline of the indoor heat exchanger. After a second preset time period t4, the pressure P2 of the pipeline is acquired again. And determining a pipeline pressure change value according to the pipeline pressures acquired twice before and after the second preset time. The pressure threshold is set and stored in advance in the processor of the air conditioner. As can be seen from the foregoing, the pressure change condition may be the amount of pressure change or the rate of pressure change. Therefore, the pressure change value may be a pressure change amount or a pressure change rate. When the pressure variation is employed, the corresponding pressure threshold is a pressure variation threshold. When a rate of pressure change is employed, the corresponding pressure threshold is a rate of pressure change threshold. Comparing the pressure change value with the corresponding pressure threshold value. And if the pressure change value is larger than the corresponding pressure threshold value, determining that the refrigerant has leakage risk. And if the pressure change value is smaller than or equal to the corresponding pressure threshold value, determining that the refrigerant is not at risk of leakage.

Specifically, in one embodiment, the pressure change amount Δp=p2—p1 of the line is calculated. If ΔP > P', it is determined that the refrigerant is at risk of leakage. If ΔP is less than or equal to P', the refrigerant is determined to have no leakage risk. Wherein P' is the pressure variation threshold of the pipeline.

In another embodiment, the rate of change of pressure V of the line is calculated _P = (P2-P1)/t 4. If V is _P >And P', determining that the refrigerant has leakage risk. If V is _P And (4) less than or equal to P ", determining that the refrigerant does not have leakage risk. Where P' is the pressure change rate threshold of the pipeline.

Referring to fig. 4, another method for detecting refrigerant leakage according to an embodiment of the present disclosure includes:

S104, controlling the operation of the air conditioner according to the leakage condition of the refrigerant.

After determining whether the refrigerant leaks, controlling the air conditioner to execute a corresponding operation scheme.

Optionally, if it is determined that the refrigerant has leakage, the user sends a prompt message. Optionally, if the target detection position is the pipeline in the indoor unit electric control box body and the outdoor unit electric control box body or the indoor heat exchanger, the power-off protection of the air conditioner is controlled, and a danger alarm is sent to a user. If the target detection position is below the indoor unit, the indication lamp configured by the air conditioner is controlled to be lightened, and a voice or information prompt of 'window ventilation and no stay below the indoor unit' is sent to a user. To alert the user and ensure the safety of the user. If the refrigerant is determined to be free from leakage, the air conditioner is controlled to keep the current running state to continue running so as to ensure the normal running of the air conditioner.

In one practical application, as shown in fig. 5:

s501, the air conditioner determines the running state of a compressor; if the running state is the start-up state, S502 is executed; if the operation state is a steady operation state, S507 is performed; if the operation state is the stop operation state, S513 is performed.

S502, the air conditioner obtains the refrigerant concentration A1 in the electric cabinet of the indoor unit and the refrigerant concentration B1 in the electric cabinet of the outdoor unit.

S503, the air conditioner controls the compressor to operate for a first set period of time t1.

S504, the air conditioner acquires the refrigerant concentration A2 in the electric cabinet of the indoor unit and the refrigerant concentration B2 in the electric cabinet of the outdoor unit again.

S505, air conditioning calculation a=a2-A1, b=b2-B1.

S506, the air conditioner judges whether delta A is less than or equal to S1 and delta B is less than or equal to S2; if yes, then S520 is performed; if not, S518 is performed.

S507, the air conditioner controls the compressor to operate at a preset frequency for a first preset time period t3.

S508, the air conditioner acquires the pressure P1 of the pipeline of the indoor heat exchanger.

S509, the air conditioner controls the compressor to operate for a second preset time period t4.

S510, the air conditioner acquires the pressure P2 of the pipeline of the indoor heat exchanger again.

S511, the air conditioner calculates Δp=p2-P1.

S512, the air conditioner judges whether delta P > P' is met; if yes, then execution S518; if not, S520 is performed.

S513, the air conditioner acquires the refrigerant concentration C1 below the indoor unit.

S514, the air conditioner controls the compressor to operate for a second set time period t2.

S515, the air conditioner acquires the refrigerant concentration C2 below the indoor unit again.

S516, the air conditioner calculates Δc=c2-C1.

S517, the air conditioner judges whether delta C > W is satisfied; if yes, then S522 is performed; if not, S520 is performed.

S518, the air conditioner determines that the refrigerant has leakage risk; then S519 is executed.

S519, the air conditioner controls its power-off protection and sends a "danger" alarm to the user.

S520, the air conditioner determines that the refrigerant does not have leakage risk; and then S521 is performed.

S521, the air conditioner controls the air conditioner to keep the current running state to continue running.

S522, the air conditioner determines that the refrigerant has leakage risk; then S523 is performed.

S523, the air conditioner control indicator lamp is turned on, and a voice or information prompt of 'window ventilation and no stay under the indoor unit' is sent to the user.

In another practical application, as shown in fig. 6:

s601, an air conditioner determines the running state of a compressor; if the running state is the start-up state, S602 is executed; if the operation state is the steady operation state, S607 is performed; if the operation state is the stop operation state, S613 is performed.

S602, the air conditioner obtains the refrigerant concentration A1 in the electric cabinet of the indoor unit and the refrigerant concentration B1 in the electric cabinet of the outdoor unit.

S603, the air conditioner controls the compressor to run for a first set time period t1.

S604, the air conditioner acquires the refrigerant concentration A2 in the electric cabinet of the indoor unit and the refrigerant concentration B2 in the electric cabinet of the outdoor unit again.

S606, air conditioner calculates V _A ＝(A2-A1)/t1、V _B ＝(B2-B1)/t1。

S606, the air conditioner judges whether V is satisfied _A R1 and V are less than or equal to _B R2 is not more than; if yes, then S620 is performed; if not, S618 is performed.

S607, the air conditioner controls the compressor to operate at a preset frequency for a first preset time period t3.

S608, the air conditioner acquires the pressure P1 of the pipeline of the indoor heat exchanger.

S609, the air conditioner controls the compressor to operate for a second preset time period t4.

S610, the air conditioner acquires the pressure P2 of the pipeline of the indoor heat exchanger again.

S611, air conditioner calculates V _P ＝(P2-P1)/t4。

S612, the air conditioner judges whether V is satisfied _P >P'; if yes, then execute S618; if not, S620 is performed.

S613, the air conditioner acquires the refrigerant concentration C1 below the indoor unit.

S614, the air conditioner controls the compressor to operate for a second set period of time t2.

S615, the air conditioner acquires the refrigerant concentration C2 below the indoor unit again.

S616, air conditioner calculates V _C ＝(C2-C1)/t2。

S617, the air conditioner judges whether V is satisfied _C >U is provided; if yes, then execution S622; if not, S620 is performed.

S618, the air conditioner determines that the refrigerant has leakage risk; then S619 is performed.

S619, the air conditioner controls the power-off protection of the air conditioner and sends a danger alarm to a user.

S620, the air conditioner determines that the refrigerant does not have leakage risk; then S621 is performed.

S621, the air conditioner controls the air conditioner to keep the current running state to continue running.

S622, the air conditioner determines that the refrigerant has leakage risk; then S623 is performed.

S623, the air conditioner control indicator lights are turned on, and a voice or information prompt of "window ventilation, do not stay under the indoor unit" is sent to the user.

The method for detecting refrigerant leakage provided by the embodiment is suitable for various refrigerants, and is particularly suitable for flammable and explosive refrigerants such as R290.

Referring to fig. 7, an embodiment of the present disclosure provides an apparatus 70 for detecting refrigerant leakage, including: an acquisition module 71, a first determination module 72 and a second determination module 73. The acquisition module 71 is configured to acquire an operation state of a compressor of the air conditioner. The first determination module 72 is configured to determine a target detection position based on an operating state of the compressor. The second determining module 73 is configured to determine a leakage condition of the refrigerant according to a preset parameter corresponding to the target detection position.

By adopting the device for detecting refrigerant leakage provided by the embodiment of the disclosure, the running state of the compressor is firstly obtained, and the target detection position to be detected is determined based on the running state. And then determining whether the refrigerant leaks or not based on preset parameters corresponding to the target detection position. Thus, the target detection position is matched with the running state of the compressor, and the preset parameters are correspondingly matched with the target detection position. Therefore, the effective and accurate representation of the preset parameters on whether the refrigerant leaks can be ensured, so that the refrigerant leakage condition can be more accurately determined.

Referring to fig. 8, an embodiment of the present disclosure provides an apparatus 80 for detecting refrigerant leakage, including a processor (processor) 81 and a memory (memory) 82. Optionally, the apparatus may further comprise a communication interface (Communication Interface) 83 and a bus 84. The processor 81, the communication interface 83, and the memory 82 may communicate with each other via the bus 84. The communication interface 83 may be used for information transfer. The processor 81 may call logic instructions in the memory 82 to perform the method for detecting refrigerant leakage of the above-described embodiment.

Further, the logic instructions in the memory 82 described above may be implemented in the form of software functional units and stored in a computer readable storage medium when sold or used as a stand alone product.

The memory 82 is a computer readable storage medium that can be used to store a software program, a computer executable program, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 81 executes the program instructions/modules stored in the memory 82 to perform functional applications and data processing, i.e., to implement the method for detecting refrigerant leakage in the above-described embodiment.

The memory 82 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for a function; the storage data area may store data created according to the use of the terminal device, etc. In addition, the memory 82 may include high-speed random access memory, and may also include nonvolatile memory.

As shown in connection with fig. 9, an embodiment of the present disclosure provides an air conditioner 90, including: an air conditioner body, a compressor, and the device 70 (80) for detecting refrigerant leakage. The device 70 (80) for detecting leakage of the refrigerant is mounted to the air conditioner body. The mounting relationships described herein are not limited to placement within a product, but include mounting connections to other components of a product, including but not limited to physical, electrical, or signal transmission connections, etc. Those skilled in the art will appreciate that the means 70 (80) for detecting refrigerant leakage may be adapted to the available product body to achieve other possible embodiments.

Embodiments of the present disclosure provide a computer-readable storage medium storing computer-executable instructions configured to perform the above-described method for detecting refrigerant leakage.

The computer readable storage medium may be a transitory computer readable storage medium or a non-transitory computer readable storage medium.

Embodiments of the present disclosure may be embodied in a software product stored on a storage medium, including one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of a method according to embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium including: a plurality of media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, randomAccess Memory), a magnetic disk, or an optical disk, or a transitory storage medium.

The above description and the drawings illustrate embodiments of the disclosure sufficiently to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only 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. Moreover, the terminology used in the present application is for the purpose of describing embodiments only and is not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a," "an," and "the" (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, when used in this application, the terms "comprises," "comprising," and/or "includes," and variations thereof, mean that the stated features, integers, steps, operations, elements, and/or components are present, but that the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof is not precluded. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method or apparatus comprising such elements. In this context, each embodiment may be described with emphasis on the differences from the other embodiments, and the same similar parts between the various embodiments may be referred to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method sections disclosed in the embodiments, the description of the method sections may be referred to for relevance.

Those of skill in the art will 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 depends upon the particular application and design constraints imposed on the solution. The skilled artisan may use different methods for each particular application to achieve the described functionality, but such implementation should not be considered to be beyond the scope of the embodiments of the present disclosure. It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the embodiments disclosed herein, the disclosed methods, articles of manufacture (including but not limited to devices, apparatuses, etc.) may be practiced in other ways. For example, the apparatus embodiments described above are merely illustrative, and for example, the division of the units may be merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. In addition, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form. The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to implement the present embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The flowcharts 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, the modules, segments, or portions of code contain one or more executable instructions for implementing specified logical functions. 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 that disclosed in the description, and sometimes no specific order exists between different operations or steps. For example, two consecutive operations or steps may actually be performed substantially in parallel, they may sometimes be performed in reverse order, which may be dependent on the functions involved. Each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims

1. A method for detecting leakage of a refrigerant, characterized by comprising the following steps:

acquiring the running state of a compressor of an air conditioner;

determining a target detection position according to the running state of the compressor;

and determining the leakage condition of the refrigerant according to the preset parameters corresponding to the target detection position.

2. The method of claim 1, wherein determining the target detection position based on the operating state of the compressor comprises:

under the condition that the running state of the compressor is a starting state, determining target detection positions as an indoor unit electric control box body and an outdoor unit electric control box body;

under the condition that the running state of the compressor is a stable running state, determining a pipeline with a target detection position as an indoor heat exchanger;

when the operation state of the compressor is the stop operation state, the target detection position is determined to be below the indoor unit.

3. The method according to claim 1, wherein, in the case that the target detection position is in the indoor unit electric cabinet and in the outdoor unit electric cabinet or below the indoor unit, the corresponding preset parameter is a refrigerant concentration; the determining the leakage condition of the refrigerant according to the preset parameters corresponding to the target detection position comprises the following steps:

and determining the leakage condition of the refrigerant according to the change condition of the concentration of the refrigerant.

4. The method of claim 3, wherein determining the leakage of the refrigerant based on the change in the concentration of the refrigerant comprises:

acquiring a refrigerant concentration change value before and after the compressor runs for a set time period in a current running state;

under the condition that the concentration variation value of the refrigerant is larger than the corresponding concentration threshold value, determining that the refrigerant has leakage risk;

and under the condition that the concentration variation value of the refrigerant is smaller than or equal to the corresponding concentration threshold value, determining that the refrigerant is free from leakage risk.

5. The method according to claim 1, wherein in case the target detection location is a line of an indoor heat exchanger, the corresponding preset parameter is a pressure of the line of the indoor heat exchanger; the determining the leakage condition of the refrigerant according to the preset parameters corresponding to the target detection position comprises the following steps:

and determining the leakage condition of the refrigerant according to the pressure change condition of the pipeline of the indoor heat exchanger.

6. The method of claim 5, wherein determining the leakage of the refrigerant based on the pressure change of the piping of the indoor heat exchanger comprises:

under the condition that the compressor runs for a first preset time period at a preset frequency, obtaining pressure change values of pipelines of the indoor heat exchangers before and after a second preset time period;

under the condition that the pressure change value is larger than the corresponding pressure threshold value, determining that the refrigerant has leakage risk;

and under the condition that the pressure change value is smaller than or equal to the corresponding pressure threshold value, determining that the refrigerant is free from leakage risk.

7. The method according to any one of claims 1 to 6, wherein after determining a leakage condition of the refrigerant according to the preset parameter corresponding to the target detection position, the method further comprises:

and controlling the operation of the air conditioner according to the leakage condition of the refrigerant.

8. An apparatus for detecting refrigerant leakage comprising a processor and a memory storing program instructions, wherein the processor is configured to perform the method for detecting refrigerant leakage according to any one of claims 1 to 7 when the program instructions are run.

9. An air conditioner, comprising:

an air conditioner body;

a compressor; and, a step of, in the first embodiment,

the apparatus for detecting refrigerant leakage according to claim 8, being mounted to the air conditioner body.

10. A storage medium storing program instructions which, when executed, perform the method for detecting refrigerant leaks of any one of claims 1 to 7.