CN117628637A - Method and device for detecting refrigerant leakage, air conditioner and storage medium - Google Patents
Method and device for detecting refrigerant leakage, air conditioner and storage medium Download PDFInfo
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 269
- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000003860 storage Methods 0.000 title claims abstract description 62
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 230000008859 change Effects 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 20
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
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- 238000010168 coupling process Methods 0.000 description 3
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- 238000012545 processing Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The application relates to the technical field of intelligent household appliances and discloses a method for detecting refrigerant leakage, which is applied to an air conditioner, wherein the air conditioner comprises a refrigerant storage device connected in parallel with a refrigerant circulation loop, and is controlled to be opened or closed, and part of refrigerant is stored in a closed state; the method comprises the following steps: responding to a refrigerant leakage detection instruction, and controlling the air conditioner to start pre-operation; obtaining the refrigerant concentration of the set part; judging whether the refrigerant leaks according to the change condition of the refrigerant concentration; wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state. The method and the device judge whether the refrigerant leakage occurs according to the change condition of the refrigerant concentration. In this process, the refrigerant storage device is always kept in a closed state. The refrigerant quantity in the refrigerant circulation loop is relatively less, so that the refrigerant quantity which is likely to leak is reduced, and the safety in the refrigerant leak detection process is improved. The application also discloses a device for detecting refrigerant leakage, an air conditioner and a storage medium.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, and for example relates to a method and device for detecting refrigerant leakage, an air conditioner and a storage medium.
Background
The refrigerant in the air conditioner is an important component for controlling the environmental temperature of the air conditioner, and along with the continuous development of air conditioning technology, the types of the refrigerant also change continuously, and people continuously search for environment-friendly, efficient and energy-saving refrigerant for the air conditioner. Because of the high GWP (Global Warming Potential ) of R410A (mixture of difluoromethane and pentafluoroethane) refrigerants, they will be phased out in the current setting of increasingly serious global warming. The refrigerant such as R290 (propane) becomes a current research hot spot due to the advantages of low pollution and low charge cost. However, the R290 refrigerant belongs to a flammable and explosive refrigerant, and the potential safety hazard caused by leakage is more serious.
The related art discloses a method for detecting a refrigerant, which comprises the following steps: the air conditioning system obtains the current refrigerant mass m after entering a stable running state; reading the last detection time T ', the mass m ' of the refrigerant detected last time and the indoor refrigerant density rho ', and obtaining the current time T; and obtaining the refrigerant leakage delta m based on the current refrigerant mass m and the refrigerant mass m' detected last time.
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:
when detecting leakage, the related technology has part of refrigerant leakage, and the leaked refrigerant brings potential safety hazard to users.
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, a device, an air conditioner and a storage medium for detecting refrigerant leakage, so as to improve the safety in the process of detecting refrigerant leakage.
In some embodiments, the method is applied to an air conditioner, the air conditioner comprises a refrigerant storage device, the refrigerant storage device is connected with a refrigerant circulation loop in parallel and is configured to be controlled to be opened or closed, and part of refrigerant is stored in the closed state; the method comprises the following steps: responding to a refrigerant leakage detection instruction, and controlling the air conditioner to start pre-operation; obtaining the refrigerant concentration of the set part; judging whether the refrigerant leaks according to the change condition of the refrigerant concentration; wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state.
In some embodiments, the apparatus includes a processor and a memory storing program instructions configured to perform the above-described method for detecting refrigerant leakage when the program instructions are executed.
In some embodiments, the air conditioner includes: the refrigerant storage device is connected with the refrigerant circulation loop in parallel and is configured to be controlled to be opened or closed, and part of refrigerant is stored in the closed state; and the above-mentioned device for detecting refrigerant leakage.
In some embodiments, the storage medium stores program instructions that, when executed, perform the method for detecting refrigerant leakage described above.
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:
and after receiving the refrigerant leakage detection instruction, controlling the air conditioner to perform pre-operation. And obtaining the refrigerant concentration of the set part of the air conditioner in the pre-running process, and judging whether the refrigerant leakage occurs according to the change condition of the refrigerant concentration. In this process, the refrigerant storage device is kept in a closed state all the time, and part of the refrigerant is stored. Therefore, compared with the normal operation condition, the refrigerant quantity in the refrigerant circulation loop in the refrigerant leakage detection process is reduced, so that the refrigerant quantity which is likely to leak is reduced, potential safety hazards are reduced, and the safety in the refrigerant leakage detection process is improved.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example 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 structural view of an air conditioner according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a method for detecting refrigerant leakage according to 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 diagram of another method for detecting refrigerant leakage provided by an embodiment of the present disclosure;
fig. 6 is a schematic diagram of an apparatus for detecting refrigerant leakage according to an embodiment of the present disclosure.
Reference numerals:
11: a compressor; 12: a four-way valve; 13: an outdoor heat exchanger; 14: a throttle device; 15: an outdoor air supply module; 16: a refrigerant storage device; 17: a third stop valve; 18: a fourth shut-off valve; 21: an indoor heat exchanger; 22: an indoor air supply module; 160: a refrigerant storage body; 161: a first stop valve; 162: a second shut-off valve; 163: a one-way valve.
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.
In the embodiment of the disclosure, the intelligent home appliance refers to a home appliance formed after a microprocessor, a sensor technology and a network communication technology are introduced into the home appliance, and has the characteristics of intelligent control, intelligent sensing and intelligent application, the operation process of the intelligent home appliance often depends on the application and processing of modern technologies such as the internet of things, the internet and an electronic chip, for example, the intelligent home appliance can realize remote control and management of a user on the intelligent home appliance by connecting the electronic appliance.
In the disclosed embodiment, the terminal device refers to an electronic device with a wireless connection function, and the terminal device can be in communication connection with the intelligent household electrical appliance through connecting with the internet, or can be in communication connection with the intelligent household electrical appliance through Bluetooth, wifi and other modes. In some embodiments, the terminal device is, for example, a mobile device, a computer, or an in-vehicle device built into a hover vehicle, etc., or any combination thereof. The mobile device may include, for example, a cell phone, smart home device, wearable device, smart mobile device, virtual reality device, etc., or any combination thereof, wherein the wearable device includes, for example: smart watches, smart bracelets, pedometers, etc.
As shown in conjunction with fig. 1, an embodiment of the present disclosure provides an air conditioner. The compressor 11, the four-way valve 12, the outdoor heat exchanger 13, the throttling device 14 and the indoor heat exchanger 21 in the air conditioner are sequentially connected through pipelines and then return to the compressor 11 to form a closed refrigerant circulation loop.
The air conditioner may be divided into an indoor unit and an outdoor unit, and illustratively, the left side of the dotted line in fig. 1 is an outdoor unit portion, and the right side is an indoor unit portion. The outdoor unit part includes a compressor 11, a four-way valve 12, an indoor heat exchanger 13, a throttle device 14, and an outdoor air supply module 15. The indoor unit includes an indoor heat exchanger 21 and an indoor air supply module 22.
The air conditioner further includes a refrigerant storage device 16. The refrigerant storage device 16 is connected in parallel with the refrigerant circulation circuit and can be controlled to be opened or closed. In the closed state, the refrigerant storage device 16 stores a part of the refrigerant. Specifically, the refrigerant storage device 16 is provided in an outdoor unit portion of the air conditioner. More specifically, the refrigerant storage device 16 is connected between the indoor heat exchanger 21 and the compressor 11. Therefore, under the condition that the refrigerant storage device is closed, no refrigerant can be ensured in the indoor unit part, and potential safety hazards caused by leakage of the refrigerant to an indoor area are avoided.
The refrigerant storage device 16 includes a refrigerant storage body 160, a first shutoff valve 161, and a second shutoff valve 162. The refrigerant storage body 160 has a cavity capable of storing a refrigerant. The first shutoff valve 161 is provided at an inlet end of the refrigerant storage device 16, and the second shutoff valve 162 is provided at an outlet end of the refrigerant storage device 16. The inlet end and the outlet end take the flow direction of the refrigerant as a reference when the refrigerating working condition operates. When the first shutoff valve 161 is opened, the refrigerant can enter the refrigerant storage body 160 from the refrigerant circulation circuit. When the second shutoff valve 162 is opened, the refrigerant can flow out of the refrigerant storage body 160.
The refrigerant storage device 16 further includes a check valve 163 disposed at an inlet of the refrigerant storage device 16. More specifically, the first shut-off valve 161 is disposed between the refrigerant storage body 160. Thus, the occurrence of the refrigerant reverse flow can be avoided.
The refrigerant storage device 16 is in a closed state, i.e., the first shutoff valve 161 and the second shutoff valve 162 are both in a closed state. At this time, even if the air conditioner is in an operating state, the refrigerant in the refrigerant storage device 16 does not enter the refrigerant circulation circuit.
The air conditioner further includes a third shut-off valve 17 and a fourth shut-off valve 18 respectively provided before and after the indoor heat exchanger 15. Specifically, the third cutoff valve 17 is provided between the throttle device 14 and the indoor heat exchanger 21. The fourth shut-off valve 18 is provided between the indoor heat exchanger 21 and the compressor 11. In this way, the passage and the disconnection of the third stop valve and the fourth stop valve can control the direction of the refrigerant in the indoor heat exchanger. Specifically, in the cooling mode, the third shut-off valve is controlled to open, and the fourth shut-off valve is controlled to open, so that the refrigerant no longer flows into the indoor side. Refrigerant in the indoor heat exchanger flows to the compressor or the outdoor heat exchanger. In the heating mode, the third stop valve passage and the fourth stop valve are controlled to be opened, so that the refrigerant does not flow into the indoor side any more. The refrigerant in the indoor heat exchanger reaches the outdoor heat exchanger through the throttling device. In this way, cooling is performed in the indoor heat exchanger by opening and closing the third stop valve and the stop valve.
When the air conditioner is in normal operation, the third stop valve 17 and the fourth stop valve 18 are in a passage state so as to ensure that the refrigerant circulation process is normally carried out.
Referring to fig. 2, an embodiment of the disclosure provides a method for detecting refrigerant leakage, including:
s201, the processor responds to the refrigerant leakage detection instruction to control the air conditioner to start pre-operation. Wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state.
That is, the third shut-off valve and the fourth shut-off valve passage are controlled, and other devices in the air conditioner are operated. And controls the first stop valve and the second stop valve to be closed. In the pre-operation process of the air conditioner, the refrigerant in the refrigerant storage device is ensured not to enter the refrigerant circulation loop.
S202, the processor obtains the refrigerant concentration of the set part.
Specifically, a sensor is arranged at a set position to detect the concentration of the refrigerant, and then a processor acquires the detection value of the sensor. The type of the sensor is adapted to the type of the refrigerant in the current air conditioner.
Wherein, the set position is the interior of any pipeline in the refrigerant circulation loop, and the concentration of the refrigerant in the refrigerant circulation loop is detected. In the primary refrigerant leakage detection, the set position remains unchanged.
S203, the processor judges whether the refrigerant leaks according to the change condition of the concentration of the refrigerant.
By adopting the method for detecting the refrigerant leakage provided by the embodiment of the disclosure, after receiving the refrigerant leakage detection instruction, the air conditioner is controlled to perform pre-operation. And obtaining the refrigerant concentration of the set part of the air conditioner in the pre-running process, and judging whether the refrigerant leakage occurs according to the change condition of the refrigerant concentration. In this process, the refrigerant storage device is kept in a closed state all the time, and part of the refrigerant is stored. Therefore, compared with the normal operation condition, the refrigerant quantity in the refrigerant circulation loop in the refrigerant leakage detection process is reduced, so that the refrigerant quantity which is likely to leak is reduced, potential safety hazards are reduced, and the safety in the refrigerant leakage detection process is improved.
Alternatively, the refrigerant leakage detection instruction may be directly input by the user. Specifically, the user directly sends a refrigerant leakage detection instruction to the processor of the air conditioner through an intelligent terminal such as a remote controller or an intelligent mobile phone. Thus, the refrigerant leakage detection can be ensured to be adapted to the actual demands of users.
Optionally, the refrigerant leakage detection command may be a start-up command of the air conditioner. That is, the refrigerant leakage detection is operated every time the air conditioner is started. Therefore, the refrigerant leakage can be detected in time, and the condition of missing detection is effectively avoided.
Optionally, the processor controls the air conditioner to start pre-running to control the air conditioner to run at a low frequency. Thus, the air conditioner can be maintained in an operating state by a small amount of refrigerant in the refrigerant circulation circuit.
Optionally, during the pre-operation of the air conditioner, the refrigerant amount in the refrigerant circulation loop is 30% to 50% of the total refrigerant amount. Therefore, the phenomenon that the operation state cannot be maintained due to too little refrigerant quantity can be avoided, and the increase of the possibly leaked refrigerant quantity due to too much refrigerant quantity can be avoided.
Referring to fig. 3, another method for detecting refrigerant leakage according to an embodiment of the present disclosure includes:
s301, the processor responds to a refrigerant leakage detection instruction to control the air conditioner to start pre-operation. Wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state.
S302, the processor obtains the refrigerant concentration of the set part.
S303, the processor obtains a first temperature T of the set part 1 。
Wherein the first temperature is detected by a temperature sensor.
S304, after the preset time interval, the processor obtains a second temperature T of the set part 2 。
S305, at a first temperature T 1 And a second temperature T 2 And if the change condition of the concentration of the refrigerant meets the first preset condition, the processor judges that the refrigerant leaks.
Therefore, after the temperature of the set part is detected, the refrigerant leakage is judged according to the change condition of the refrigerant concentration under isothermal conditions, so that the temperature can be prevented from interfering the refrigerant concentration, and the accuracy of refrigerant leakage detection is improved.
Alternatively, the preset time interval preferably has a value ranging from 1S to 5S, for example, 2S may be taken. In this way, a proper time interval is set between two temperature detections, so that the problem that the detection is too frequent and the unnecessary detection causes resource waste due to the too small time interval can be avoided; but also can avoid the situation that the refrigerant leakage cannot be timely judged due to overlarge time interval.
Optionally, the refrigerant concentration includes a first refrigerant concentration ρ 1 And a second refrigerant concentration ρ after a preset time interval 2 。
Optionally, the first preset condition includes:
ρ 2 <m×ρ 1 ；
wherein 0<m is less than or equal to 1. Thus, the leakage of the refrigerant can be detected in time according to the change of the concentration.
It can be understood that the higher the value of m is, the more severe the refrigerant leakage is judged, and the more the slight refrigerant leakage can be detected.
Optionally, the m value may be adjusted according to the historical run time of refrigerant leak detection. That is, if no refrigerant leakage is detected for a long period of time, the m value is appropriately reduced.
Alternatively, the value of m may be adjusted according to a preset time interval. When the interval time interval is larger, the value of m is larger. And when the interval time is smaller, the value of m is smaller. In this way, the first preset condition can be adjusted according to the actual setting, so that erroneous judgment is avoided as much as possible, and meanwhile, missed judgment is reduced.
Optionally, after the processor determines that the refrigerant leaks, the method further includes: the processor sends out a first prompt message. The first prompt message may be a prompt tone, or may be a prompt message sent to an intelligent terminal such as a smart phone or an intelligent computer of the user, or may be linked with other terminal devices to prompt the user. Therefore, the user can know the result of refrigerant detection in time, and further take relevant measures in time.
Optionally, the processor obtains a first temperature T of the set portion 1 Thereafter, the method further comprises: at a first temperature T 1 And a second temperature T 2 And if the change condition of the concentration of the refrigerant meets the second preset condition, the processor judges that the refrigerant seriously leaks.
Optionally, the second preset condition includes:
ρ 2 <n×ρ 1 ；
wherein 0< n < m. Therefore, on the basis of judging the leakage of the refrigerant, the situation that the refrigerant seriously leaks can be distinguished, so that a user can be prompted in time, and safety accidents are avoided.
Alternatively, n may take a value of 0.4. The laboratory test shows that when the refrigerant quantity is lower than 40% of the normal refrigerant quantity, the normal operation of the air conditioner is obviously influenced, the abrasion of devices is caused, and the service life of the air conditioner is influenced. In addition, when the refrigerant quantity is lower than 40% of the normal refrigerant quantity, the refrigerant leakage quantity is large, the possibility of causing safety accidents is greatly increased, and the safety of users is threatened.
Optionally, after the processor determines that the refrigerant seriously leaks, the method further includes: the processor sends out a second prompt message. It should be noted that the second prompt information should be distinguished from the first prompt information, so that the user can directly determine the current situation according to the prompt information.
Referring to fig. 4, another method for detecting refrigerant leakage according to an embodiment of the present disclosure includes:
s401, the processor responds to the refrigerant leakage detection instruction to control the air conditioner to operate in advance. Wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state.
S402, the processor obtains the refrigerant concentration of the set part.
S403, the processor judges whether the refrigerant leaks according to the change condition of the refrigerant concentration.
S404, when the refrigerant leakage is judged, the processor sends a shutdown signal.
After the processor sends a shutdown signal, at least one stop valve is controlled to be opened and closed according to the operation mode of the air conditioner, and meanwhile, the operation parameters of an indoor fan and outdoor equipment of the air conditioner are adjusted, and the refrigerant in the indoor heat exchanger is discharged to a compressor of an outdoor unit part. In the process, the stop valves in front and behind the indoor heat exchanger are in a closed state.
Specifically, when the air conditioner is in a refrigerating working condition, the third stop valve is controlled to be opened, and the fourth stop valve is controlled to be opened. Refrigerant in the outdoor unit cannot enter the indoor unit. Meanwhile, the refrigerant in the indoor heat exchanger continuously flows in the original direction to reach the outdoor unit part. And one part of the refrigerant enters the compressor, and the other part of the refrigerant enters the outdoor heat exchanger, so that the indoor unit part is free of refrigerant. When the air conditioner is in a heating working condition, the third stop valve passage is controlled, and the fourth stop valve is opened. The refrigerant in the outdoor unit part does not flow to the indoor unit any more, and the refrigerant in the indoor heat exchanger continues to flow in the original direction, so as to reach the compressor of the outdoor unit part and/or the outdoor heat exchanger. In the process, the indoor air supply module, the compressor and the outdoor air supply module are all in an operation state. After the specified time, the indoor air supply module, the compressor and the outdoor air supply module are controlled to be closed. Therefore, the indoor unit part is ensured not to reserve the refrigerant, and potential safety hazards caused by refrigerant leakage at the indoor unit part can be avoided.
Optionally, after the processor judges whether the refrigerant leaks according to the change condition of the refrigerant concentration, the processor further includes: and when the refrigerant is judged not to leak, the processor controls the refrigerant storage device to be opened until all the refrigerant in the refrigerant storage device enters the refrigerant circulation loop. And controls the air conditioner to operate normally. The processor controls the air conditioner to normally operate, namely, stops the pre-operation mode, and determines the operation parameters of the air conditioner according to the set mode and the set temperature.
Referring to fig. 5, another method for detecting refrigerant leakage according to an embodiment of the present disclosure includes:
s501, the processor responds to a refrigerant leakage detection instruction to control the air conditioner to start pre-operation. Wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state.
S502, the processor obtains a first temperature T of the set part 1 And, a first refrigerant concentration ρ of the set portion 1 。
S503, after a preset time interval, the processor obtains a second temperature T of the set part 2 And, the second refrigerant concentration ρ of the set portion 2 。
S504, at a first temperature T 1 And a second temperature T 2 The first refrigerant concentration and the second refrigerant concentration are equal to each other and conform to ρ 2 <m×ρ 1 (0<m.ltoreq.1), the processor determines that the refrigerant leaks.
S505, at a first temperature T 1 And a second temperature T 2 The first refrigerant concentration and the second refrigerant concentration are equal to each other and conform to ρ 2 <n×ρ 1 (0<n<m), the processor judges that the refrigerant is seriously leaked.
S506, after the processor judges that the refrigerant leaks or the refrigerant leaks seriously, the processor sends a shutdown signal.
In the actual application process, step S504 and step S505 may be performed simultaneously. If the current situation judges that the refrigerant leakage is satisfied and the refrigerant serious leakage is satisfied, the processor sends out a second refrigerant prompt message. So that the user can know the leakage condition of the refrigerant more accurately.
Alternatively, step S504 may be performed first, and after the processor determines that the refrigerant leaks, step S505 may be performed to further determine the degree of refrigerant leakage.
And under the condition that the refrigerant leaks but does not leak seriously, the processor controls the indoor air supply module to operate at a low air speed. Under the condition that the refrigerant seriously leaks, the processor controls the indoor air supply module to operate at a high air speed. Therefore, a small amount of leaked refrigerant is blown away into the air, and potential safety hazards caused by concentrated refrigerant distribution are avoided.
Referring to fig. 6, an embodiment of the present disclosure provides an apparatus for detecting refrigerant leakage, including a processor (processor) 60 and a memory (memory) 61. Optionally, the apparatus may also include a communication interface (Communication Interface) 62 and a bus 63. The processor 60, the communication interface 62, and the memory 61 may communicate with each other via the bus 63. The communication interface 62 may be used for information transfer. The processor 60 may call logic instructions in the memory 61 to perform the method for detecting refrigerant leakage of the above-described embodiment.
Further, the logic instructions in the memory 61 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product.
The memory 61 is used as a storage medium for storing software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 60 executes the program instructions/modules stored in the memory 61 to perform functional applications and data processing, i.e., to implement the method for detecting refrigerant leakage in the above-described embodiment.
The memory 61 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 functions; the storage data area may store data created according to the use of the terminal device, etc. Further, the memory 61 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the device for detecting refrigerant leakage.
Embodiments of the present disclosure provide a storage medium storing computer-executable instructions configured to perform the above-described method for detecting refrigerant leakage.
The 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, random Access 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, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than 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 (10)
1. The method for detecting the leakage of the refrigerant is applied to an air conditioner and is characterized by comprising a refrigerant storage device, wherein the refrigerant storage device is connected with a refrigerant circulation loop in parallel and is configured to be controlled to be opened or closed, and part of the refrigerant is stored in the closed state; the method comprises the following steps:
responding to a refrigerant leakage detection instruction, and controlling the air conditioner to start pre-operation;
obtaining the refrigerant concentration of the set part;
judging whether the refrigerant leaks according to the change condition of the refrigerant concentration;
wherein, during the pre-operation of the air conditioner, the refrigerant storage device is kept in a closed state.
2. The method of claim 1, wherein said determining whether leakage of refrigerant occurs based on a change in concentration of said refrigerant comprises:
obtaining a first temperature T of the set part 1 ；
After a preset time interval, a second temperature T of the set part is obtained 2 ；
At the first temperature T 1 And a second temperature T 2 And if the change condition of the concentration of the refrigerant meets a first preset condition, judging that the refrigerant leaks.
3. The method of claim 2, wherein the refrigerant concentration comprises: first refrigerant concentration ρ 1 And, a second refrigerant concentration ρ after a preset time interval 2 ；
The first preset condition includes:
ρ 2 <m×ρ 1 ；
wherein 0<m is less than or equal to 1.
4. A method according to claim 3, wherein the second temperature T of the set location is obtained 2 Thereafter, the method further comprises:
at the first temperature T 1 And a second temperature T 2 And if the change condition of the concentration of the refrigerant meets a second preset condition, judging that the refrigerant seriously leaks.
5. The method of claim 4, wherein the second preset condition comprises:
ρ 2 <n×ρ 1 ；
wherein 0< n < m.
6. The method according to any one of claims 1 to 5, wherein after determining whether leakage of the refrigerant occurs according to the change in the concentration of the refrigerant, further comprising:
under the condition that the refrigerant is not leaked, controlling the refrigerant storage device to be opened until the refrigerant in the refrigerant storage device completely enters the refrigerant circulation loop; and is combined with the other components of the water treatment device,
and controlling the air conditioner to normally operate.
7. The method according to any one of claims 1 to 5, wherein after determining whether leakage of the refrigerant occurs according to the change in the concentration of the refrigerant, further comprising:
if it is determined that the refrigerant leaks, a shutdown signal is sent.
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:
the refrigerant storage device is connected with the refrigerant circulation loop in parallel and is configured to be controlled to be opened or closed, and part of refrigerant is stored in the closed state; and, a step of, in the first embodiment,
the apparatus for detecting refrigerant leakage as recited in claim 8.
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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211000836.2A CN117628637A (en) | 2022-08-19 | 2022-08-19 | Method and device for detecting refrigerant leakage, air conditioner and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211000836.2A CN117628637A (en) | 2022-08-19 | 2022-08-19 | Method and device for detecting refrigerant leakage, air conditioner and storage medium |
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| CN (1) | CN117628637A (en) |
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