CN115183396B - Refrigerant leakage control method and system of air conditioner and air conditioner - Google Patents
Refrigerant leakage control method and system of air conditioner and air conditioner Download PDFInfo
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- CN115183396B CN115183396B CN202210726027.3A CN202210726027A CN115183396B CN 115183396 B CN115183396 B CN 115183396B CN 202210726027 A CN202210726027 A CN 202210726027A CN 115183396 B CN115183396 B CN 115183396B
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 326
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 139
- 238000001514 detection method Methods 0.000 claims abstract description 61
- 238000011084 recovery Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 4
- 210000003437 trachea Anatomy 0.000 claims 7
- 238000004590 computer program Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
- F24F11/36—Responding to malfunctions or emergencies to leakage of heat-exchange fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioner control, and particularly provides a refrigerant leakage control method and system of an air conditioner and the air conditioner, aiming at solving the problems of detecting the refrigerant leakage condition of the air conditioner so as to make quick response to refrigerant leakage and avoiding the risk of refrigerant leakage while the operation of the air conditioner is not influenced. Therefore, the invention can selectively control the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result obtained by the refrigerant detector, so as to realize the refrigerant leakage control of the air conditioner. Through the configuration mode, the invention can timely and effectively detect the refrigerant leakage without affecting the operation of the air conditioner, realize corresponding refrigerant leakage control according to the refrigerant detection result, and effectively avoid the safety risk problem caused by refrigerant leakage.
Description
Technical Field
The invention relates to the technical field of air conditioner control, and particularly provides a refrigerant leakage control method and system of an air conditioner and the air conditioner.
Background
The application of the air conditioner is more and more wide, the application of new refrigerants including R32, 290, 454B and the like is more and more increased along with the promotion of the application level of the air conditioner and the current environment-friendly low-carbon requirement, and the new refrigerants more meet the low-carbon environment-friendly requirement, but have the defect of inflammability and explosiveness. Therefore, if the leakage of the refrigerant cannot be found in time during the operation of the air conditioner, the leakage concentration of the refrigerant is likely to increase, thereby causing explosion. However, if the refrigerant leakage occurs, the operation of the air conditioner is stopped immediately, and high operation cost is caused.
Accordingly, there is a need in the art for a new control scheme for an air conditioner to solve the above-mentioned problems.
Disclosure of Invention
The present invention is provided to solve or at least partially solve the problem of how to detect the leakage of the refrigerant of the air conditioner to react rapidly to the leakage of the refrigerant and avoid the risk of the leakage of the refrigerant while not affecting the operation of the air conditioner.
In a first aspect, the present invention provides a refrigerant leakage control method of an air conditioner, the method is applied to the air conditioner, the air conditioner includes an outdoor unit and a plurality of indoor units, the indoor units are connected with each other through refrigerant air pipes and refrigerant liquid pipes, an outdoor liquid pipe valve and an outdoor air pipe valve are arranged on the outdoor unit, the outdoor liquid pipe valve controls opening and closing of an outdoor unit end of the refrigerant liquid pipe, the outdoor air pipe valve controls opening and closing of an outdoor unit end of the refrigerant air pipe, each indoor unit is provided with an indoor air pipe valve and an indoor liquid pipe valve, the indoor liquid pipe valve controls opening and closing of each indoor unit end of the refrigerant liquid pipe, and each indoor unit is provided with a refrigerant detector, the method includes:
for each indoor unit, detecting the refrigerant concentration in the indoor unit area through a refrigerant detector of the indoor unit to obtain a refrigerant detection result of each refrigerant detector;
and selectively controlling the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner.
In one technical scheme of the refrigerant leakage control method of the air conditioner, the step of selectively controlling the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner comprises the following steps:
acquiring the refrigerant detection result as the number of refrigerant detectors with refrigerant leakage;
when the number is smaller than or equal to a first preset number, an indoor air pipe valve and an indoor liquid pipe valve on an indoor unit corresponding to a refrigerant detector with refrigerant leakage are controlled to be closed;
and when the number is larger than a first preset number, controlling the outdoor liquid pipe valve and the outdoor air pipe valve on the outdoor unit to be closed, and then controlling the air conditioner to stop.
In one technical scheme of the refrigerant leakage control method of the air conditioner, after the step of controlling the closing of the indoor air pipe valve and the indoor liquid pipe valve on the indoor unit corresponding to the refrigerant detector with refrigerant leakage when the number is smaller than or equal to the first preset number, the method further comprises:
when the number is smaller than or equal to a second preset number, acquiring a second detection result of the refrigerant detector with refrigerant leakage again at intervals of a first preset time, and controlling the refrigerant leakage of the air conditioner according to the second detection result;
and when the number is larger than the second preset number and smaller than or equal to the first preset number, controlling the refrigerant leakage of the air conditioner according to the operation mode of the air conditioner.
In one technical scheme of the refrigerant leakage control method of the air conditioner, the step of performing refrigerant leakage control of the air conditioner according to the second detection result includes:
when the second detection result shows that the refrigerant leakage does not occur, the air conditioner is controlled to continue to operate according to the current operation state;
and when the second detection result is that the refrigerant leakage occurs, performing refrigerant leakage control of the air conditioner according to the operation mode of the air conditioner.
In one aspect of the above method for controlling refrigerant leakage of an air conditioner, the operation mode includes a cooling mode and a heating mode, and the step of performing refrigerant leakage control of the air conditioner according to the operation mode of the air conditioner includes:
when the operation mode of the air conditioner is a refrigeration mode, the outdoor liquid pipe valve and the outdoor air pipe valve are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop;
when the operation mode of the air conditioner is a heating mode, after the air conditioner is controlled to be switched to a refrigerating mode, the outdoor liquid pipe valve and the outdoor air pipe valve are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop.
In one technical scheme of the refrigerant leakage control method of the air conditioner, the step of realizing refrigerant recovery by controlling the outdoor liquid pipe valve and the outdoor air pipe valve comprises the following steps:
controlling the valve of the outdoor liquid pipe to be closed;
and after controlling the compressor of the air conditioner to perform the frequency-raising operation for a second preset time, controlling the outdoor air pipe valve to be closed so as to realize refrigerant recovery.
In one technical scheme of the refrigerant leakage control method of the air conditioner, the method further comprises the following steps:
when the number is smaller than or equal to a second preset number, a first fault prompt is sent out;
when the number is smaller than or equal to a second preset number and the second detection result is that refrigerant leakage occurs, a second fault prompt is sent out;
when the number is larger than the second preset number and smaller than the first preset number, a second fault reminder is sent out;
and when the number is greater than or equal to the first preset number, a third fault prompt is sent out.
In one technical scheme of the refrigerant leakage control method of the air conditioner, the method is characterized by further comprising the following steps:
and when the operation mode of the indoor unit is not a refrigerating mode or a heating mode, controlling the indoor air pipe valve and the indoor liquid pipe valve of the indoor unit to be closed.
In a second aspect, the present invention provides a refrigerant leakage control system of an air conditioner, the air conditioner including an outdoor unit and an indoor unit, the indoor unit and the outdoor unit being connected by a refrigerant air pipe and a refrigerant liquid pipe, respectively, the outdoor unit being provided with an outdoor liquid pipe valve and an outdoor air pipe valve, the outdoor liquid pipe valve controlling opening and closing of an outdoor unit end of the refrigerant liquid pipe, the outdoor air pipe valve controlling opening and closing of an outdoor unit end of the refrigerant air pipe, the indoor unit being provided with an indoor air pipe valve and an indoor liquid pipe valve, the indoor liquid pipe valve controlling opening and closing of the refrigerant liquid pipe at an indoor unit end, the indoor air pipe valve controlling opening and closing of the refrigerant air pipe at an indoor unit end, the indoor unit being provided with a refrigerant detector, the system comprising:
the refrigerant detection result acquisition module is configured to detect the concentration of the refrigerant in the indoor unit area through the refrigerant detector of the indoor unit so as to acquire a refrigerant detection result of the refrigerant detector;
and the refrigerant leakage control module is configured to selectively control the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner.
In a third aspect, there is provided an air conditioner, the air conditioner comprising the refrigerant leakage control system of claim 9, an outdoor unit and an indoor unit, wherein the indoor unit is connected with the outdoor unit through a refrigerant air pipe and a refrigerant liquid pipe respectively, an outdoor liquid pipe valve and an outdoor air pipe valve are arranged on the outdoor unit, the outdoor liquid pipe valve controls the opening and closing of the outdoor unit end of the refrigerant liquid pipe, the outdoor air pipe valve controls the opening and closing of the outdoor unit end of the refrigerant air pipe, the indoor units are all provided with an indoor air pipe valve and an indoor liquid pipe valve, the indoor liquid pipe valve controls the opening and closing of the refrigerant liquid pipe at the indoor unit end, the indoor air pipe valve controls the opening and closing of the refrigerant air pipe at the indoor unit end, and the indoor units are all provided with refrigerant detectors.
The technical scheme provided by the invention has at least one or more of the following beneficial effects:
in the technical scheme of implementing the invention, the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve can be selectively controlled according to the refrigerant detection result obtained by the refrigerant detector, so as to realize the refrigerant leakage control of the air conditioner. Through the configuration mode, the invention can timely and effectively detect the refrigerant leakage without affecting the operation of the air conditioner, realize corresponding refrigerant leakage control according to the refrigerant detection result, and effectively avoid the safety risk problem caused by refrigerant leakage.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. As will be readily appreciated by those skilled in the art: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. Wherein:
fig. 1 is a flow chart illustrating main steps of a refrigerant leakage control method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view of a composition structure of an air conditioner according to an embodiment of the present invention;
fig. 3 is a main block diagram of a refrigerant leakage control system of an air conditioner according to an embodiment of the present invention.
List of reference numerals:
1: an outdoor unit; 11: an outdoor liquid pipe valve; 12: an outdoor air pipe valve; 2: an indoor unit; 21: an indoor liquid pipe valve; 22: an indoor air pipe valve; 23: a refrigerant detector; 3: a refrigerant gas pipe; 4: a refrigerant liquid pipe.
Detailed Description
Some embodiments of the invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention.
In the description of the present invention, a "module," "processor" may include hardware, software, or a combination of both. A module may comprise hardware circuitry, various suitable sensors, communication ports, memory, or software components, such as program code, or a combination of software and hardware. The processor may be a central processor, a microprocessor, a digital signal processor, or any other suitable processor. The processor has data and/or signal processing functions. The processor may be implemented in software, hardware, or a combination of both. Non-transitory computer readable storage media include any suitable medium that can store program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, and the like. The term "a and/or B" means all possible combinations of a and B, such as a alone, B alone or a and B. The term "at least one A or B" or "at least one of A and B" has a meaning similar to "A and/or B" and may include A alone, B alone or A and B. The singular forms "a", "an" and "the" include plural referents.
Referring to fig. 1, fig. 1 is a schematic flow chart of a main step of a refrigerant leakage control method of an air conditioner according to an embodiment of the present invention. As shown in fig. 1, in the embodiment of the present invention, the air conditioner may include an outdoor unit 1 and an indoor unit 2, where the indoor unit 2 is connected to the outdoor unit 1 through a refrigerant air pipe 3 and a refrigerant liquid pipe 4, the outdoor unit 1 is provided with an outdoor liquid pipe valve 11 and an outdoor air pipe valve 12, the outdoor liquid pipe valve 11 controls opening and closing of an outdoor unit end of the refrigerant liquid pipe 4, the outdoor air pipe valve 12 controls opening and closing of an outdoor unit end of the refrigerant air pipe 3, the indoor unit 2 is provided with an indoor air pipe valve 22 and an indoor liquid pipe valve 21, the indoor liquid pipe valve 21 controls opening and closing of the refrigerant liquid pipe 4 at an indoor unit end, the indoor air pipe valve 22 controls opening and closing of the refrigerant air pipe 3 at the indoor unit end, and the indoor unit 2 is provided with a refrigerant detector 23. The refrigerant leakage control method of the air conditioner mainly comprises the following steps S101-S102.
Step S101: the refrigerant concentration in the area of the indoor unit 2 is detected by the refrigerant detector 23 of the indoor unit 2 to obtain a refrigerant detection result of the refrigerant detector 23.
In the present embodiment, the refrigerant concentration in the area of the indoor unit 2 can be detected by the refrigerant detector 23 provided in the indoor unit 2, and the refrigerant detection result of the refrigerant detector 23 can be obtained.
In one embodiment, a refrigerant concentration threshold may be set, and when the detected refrigerant concentration of the refrigerant detector 23 is greater than the refrigerant concentration threshold, it may be determined that the refrigerant detection result of the refrigerant detector 23 is that refrigerant leakage occurs
Step S102: according to the refrigerant detection result, the opening and closing of the outdoor liquid pipe valve 11, the outdoor air pipe valve 12, the indoor liquid pipe valve 21 and the indoor air pipe valve 22 are selectively controlled to realize the refrigerant leakage control of the air conditioner.
In the present embodiment, the opening and closing of the outdoor liquid pipe valve 11, the outdoor air pipe valve 12, the indoor liquid pipe valve 21, and the indoor air pipe valve 22 can be selectively controlled according to the refrigerant detection result to perform refrigerant leakage control on the air conditioner.
In one embodiment, the outdoor liquid pipe valve 11, the outdoor air pipe valve 12, the indoor liquid pipe valve 21 and the indoor air pipe valve 22 may be valves with adjustable opening degrees, such as electronic expansion valves, electromagnetic valves, electric valves and the like.
In one embodiment, referring to fig. 2, fig. 2 is a schematic view illustrating a composition structure of an air conditioner according to an embodiment of the present invention. As shown in fig. 2, the air conditioner may be a multi-split air conditioner, and the multi-split air conditioner may include an outdoor unit 1 and a plurality of indoor units 2, where the indoor units 2 are connected to the outdoor unit 1 through refrigerant air pipes 3 and refrigerant liquid pipes 4, an outdoor liquid pipe valve 11 and an outdoor air pipe valve 12 are disposed on the outdoor unit 1, the outdoor liquid pipe valve 11 controls opening and closing of an outdoor unit end of the refrigerant liquid pipe 4, the outdoor air pipe valve 12 controls opening and closing of an outdoor unit end of the refrigerant air pipe 3, an indoor air pipe valve 22 and an indoor liquid pipe valve 21 are disposed on each indoor unit 2, the indoor liquid pipe valve 21 controls opening and closing of the refrigerant liquid pipe 4 at each indoor unit end, and the indoor air pipe valve 22 controls opening and closing of the refrigerant air pipe 3 at each indoor unit end, and a refrigerant detector 23 is disposed on each indoor unit 2. The opening and closing of the outdoor liquid pipe valve 11 and the outdoor air pipe valve 12 can be controlled by a general control unit provided in the outdoor unit 1, and the opening and closing of the indoor liquid pipe valve 21 and the indoor air pipe valve 22 can be controlled by a control unit provided in the indoor unit 2.
Based on the steps S101-S102, the embodiment of the present invention can selectively control the opening and closing of the outdoor liquid tube valve 11, the outdoor air tube valve 12, the indoor liquid tube valve 21 and the indoor air tube valve 22 according to the refrigerant detection result obtained by the refrigerant detector 23, so as to realize the refrigerant leakage control of the air conditioner. Through the configuration mode, the embodiment of the invention can timely and effectively detect the refrigerant leakage while the operation of the air conditioner is not affected, and realize corresponding refrigerant leakage control according to the refrigerant detection result, thereby effectively avoiding the safety risk problem caused by refrigerant leakage.
Step S102 is further described below.
In one implementation of the embodiment of the present invention, step S102 may further include the following steps S1021 to S1023:
step S1021: the obtained refrigerant detection result is the number of refrigerant detectors 23 in which refrigerant leakage occurs.
In the present embodiment, the number of refrigerant detectors 23 in which refrigerant leakage occurs can be counted as the refrigerant detection result.
Step S1022: when the number is smaller than or equal to the first preset number, the indoor air pipe valve 22 and the indoor liquid pipe valve 21 on the indoor unit 2 corresponding to the refrigerant detector 23 for controlling the occurrence of refrigerant leakage are closed.
In the present embodiment, when the occurrence of refrigerant leakage is detected, the indoor air pipe valve 22 and the indoor liquid pipe valve 21 on the indoor unit 2 in which refrigerant leakage occurs may be closed first. The person skilled in the art can set the value of the first preset number according to the needs of the practical application.
In one embodiment, the first preset number may be 2.
In one embodiment, after step S1022, step S1024 and step S1025 may further be included:
step S1024: and when the number is smaller than or equal to the second preset number, acquiring a second detection result of the refrigerant detector 23 with the refrigerant leakage again at intervals of the first preset time, and controlling the refrigerant leakage of the air conditioner according to the second detection result.
In the present embodiment, the number of refrigerant detectors 23 detecting the refrigerant leakage may be compared with a second preset number, and if the number is smaller than the second preset number, the detection result of the refrigerant detectors 23 having the refrigerant leakage may be obtained again at intervals of the first preset time. The person skilled in the art can set the values of the second preset number and the first preset time according to the needs of the practical application.
In one embodiment, the second preset number may be 1.
In one embodiment, step S1024 may further include step S10241 and step S10242:
step S10241: and when the second detection result is that the refrigerant leakage does not occur, controlling the air conditioner to continue to operate according to the current operation state.
Step S10242: and when the second detection result is that the refrigerant leakage occurs, performing refrigerant leakage control of the air conditioner according to the operation mode of the air conditioner.
In this embodiment, if the second detection result after the first preset time interval indicates that no refrigerant leakage occurs, it is indicated that only the current indoor unit 2 has refrigerant leakage, and the indoor air pipe valve 22 and the indoor liquid pipe valve 21 of the current indoor unit 2 are closed to control refrigerant leakage. If the second detection result after the first preset time interval is that the refrigerant leakage still exists, it is indicated that the refrigerant leakage exists in the current indoor unit 2 or the refrigerant liquid pipe 4 or the refrigerant air pipe 3 connected with the current indoor unit 2, and then the refrigerant leakage control needs to be further performed according to the operation mode of the air conditioner.
Step S1025: and when the number is greater than the second preset number and smaller than or equal to the first preset number, controlling the refrigerant leakage of the air conditioner according to the operation mode of the air conditioner.
In the embodiment, when the number of the refrigerant detectors 23 having refrigerant leakage is greater than the first preset number and less than or equal to the second preset number, the refrigerant leakage control may be performed according to the operation mode of the air conditioner.
In one embodiment, the operation mode may include a cooling mode and a heating mode, and the step of "performing refrigerant leakage control according to the operation mode of the air conditioner" may further include:
when the operation mode of the air conditioner is a refrigeration mode, the outdoor liquid pipe valve 11 and the outdoor air pipe valve 12 are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop;
when the operation mode of the air conditioner is a heating mode, after the air conditioner is controlled to be switched to a refrigerating mode, the outdoor liquid pipe valve 11 and the outdoor air pipe valve 12 are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop.
In this embodiment, when the air conditioner is in the cooling mode, the outdoor liquid pipe valve 11 and the outdoor air pipe valve 12 can be controlled to recover the refrigerant; when the air conditioner is in a heating mode, the air conditioner can be converted into a refrigerating mode, and then the refrigerant is recovered by controlling the outdoor liquid pipe valve 11 and the outdoor air pipe valve 12. After the refrigerant is recovered, the air conditioner can be controlled to stop.
In one embodiment, refrigerant recovery is achieved by:
firstly, controlling the outdoor liquid pipe valve 11 to be closed; after the compressor of the air conditioner is controlled to perform the frequency-raising operation for a second preset time, the outdoor air pipe valve 12 is controlled to be closed, so that refrigerant recovery is realized. That is, when the refrigerant leakage amount is small, refrigerant may be recovered first, so that the refrigerant may flow into the outdoor unit 1 of the air conditioner more.
Step S1023: when the number is larger than the first preset number, the outdoor liquid pipe valve 11 and the outdoor air pipe valve 12 on the outdoor unit 1 are controlled to be closed, and then the air conditioner is controlled to stop.
In one implementation manner of the embodiment of the present invention, different fault alarms may be sent according to the number of refrigerant detectors 23 with refrigerant leakage as the refrigerant detection result:
when the number is smaller than or equal to a second preset number, a first fault prompt is sent out;
when the number is smaller than or equal to a second preset number and the second detection result is that refrigerant leakage occurs, a second fault prompt is sent out;
when the number is larger than the second preset number and smaller than the first preset number, a second fault reminder is sent out;
and when the number is greater than or equal to the first preset number, a third fault prompt is sent out.
Specifically, the first preset number may be 2, and the second preset number may be 1. When the number of the refrigerant detectors 23 detecting refrigerant leakage is 1, a first fault notification, namely "refrigerant leakage exists in one indoor unit", can be sent out; when the number of the refrigerant detectors 23 detecting the refrigerant leakage is 1 and the second detection result after the first preset time interval is still that the refrigerant leakage occurs, a second fault prompt is sent out, namely 'the refrigerant leakage occurs in one indoor unit or a refrigerant liquid pipe or a refrigerant gas pipe connected with the indoor unit'; when the number of the refrigerant detectors 23 detecting the refrigerant leakage is greater than or equal to 2, a third fault notification is sent out, namely, refrigerant leakage exists in more than two indoor units.
In one embodiment, when the operation mode of the indoor unit 2 is not the cooling mode or the heating mode, the indoor air pipe valve 22 and the indoor liquid pipe valve 21 of the indoor unit 2 are both controlled to be closed.
In the present embodiment, when the indoor unit 2 is not operating in the cooling mode or the heating mode, both the indoor air pipe valve 22 and the indoor liquid pipe valve 21 of the indoor unit 2 may be closed to reduce the refrigerant flow noise in the indoor unit 2.
It should be noted that, although the foregoing embodiments describe the steps in a specific order, it will be understood by those skilled in the art that, in order to achieve the effects of the present invention, the steps are not necessarily performed in such an order, and may be performed simultaneously (in parallel) or in other orders, and these variations are within the scope of the present invention.
Further, the invention also provides a refrigerant leakage control system.
Referring to fig. 3, fig. 3 is a main block diagram of a refrigerant leakage control system of an air conditioner according to an embodiment of the present invention. As shown in fig. 3, the air conditioner in the embodiment of the invention comprises an outdoor unit 1 and an indoor unit 2, the indoor unit 2 is connected with the outdoor unit 1 through a refrigerant air pipe 3 and a refrigerant liquid pipe 4 respectively, the outdoor unit 1 is provided with an outdoor liquid pipe valve 11 and an outdoor air pipe valve 12, the outdoor liquid pipe valve 11 controls the opening and closing of the outdoor unit 1 end of the refrigerant liquid pipe 4, the outdoor air pipe valve 12 controls the opening and closing of the outdoor unit 1 end of the refrigerant air pipe 3, the indoor unit 2 is provided with an indoor air pipe valve 22 and an indoor liquid pipe valve 21, the indoor liquid pipe valve 21 controls the opening and closing of the refrigerant liquid pipe 4 at the indoor unit 2 end, the indoor air pipe valve 22 controls the opening and closing of the refrigerant air pipe 3 at the indoor unit 2 end, the indoor unit 2 is provided with a refrigerant detector 23, and a refrigerant leakage control system of the air conditioner can comprise a refrigerant detection result acquisition module and a refrigerant leakage control module. In this embodiment, the refrigerant detection result obtaining module may be configured to detect the refrigerant concentration in the area of the indoor unit 2 by the refrigerant detector 23 of the indoor unit 2, so as to obtain the refrigerant detection result of the refrigerant detector 23. The refrigerant leakage control module may be configured to selectively control opening and closing of the outdoor liquid pipe valve 11, the outdoor air pipe valve 12, the indoor liquid pipe valve 21, and the indoor air pipe valve 22 according to a refrigerant detection result, so as to realize refrigerant leakage control of the air conditioner.
The above refrigerant leakage control system is used for executing the embodiment of the refrigerant leakage control method of the air conditioner shown in fig. 1, and the technical principles of the two embodiments, the technical problems to be solved and the technical effects to be produced are similar, and those skilled in the art can clearly understand that, for convenience and brevity of description, the specific working process and the related description of the refrigerant leakage control system can refer to the description of the embodiment of the refrigerant leakage control method, and the description is omitted herein.
It will be appreciated by those skilled in the art that the present invention may implement all or part of the above-described methods according to the above-described embodiments, or may be implemented by means of a computer program for instructing relevant hardware, where the computer program may be stored in a computer readable storage medium, and where the computer program may implement the steps of the above-described embodiments of the method when executed by a processor. Wherein the computer program comprises computer program code which may be in source code form, object code form, executable file or some intermediate form etc. The computer readable storage medium may include: any entity or device, medium, usb disk, removable hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier wave signals, telecommunications signals, software distribution media, and the like capable of carrying the computer program code. It should be noted that the computer readable storage medium may include content that is subject to appropriate increases and decreases as required by jurisdictions and by jurisdictions in which such computer readable storage medium does not include electrical carrier signals and telecommunications signals.
The invention further provides an air conditioner, the air conditioner comprises the refrigerant leakage control system of the air conditioner in the embodiment of the refrigerant leakage control system of the air conditioner, the outdoor unit 1 and the indoor unit 2 are connected with the outdoor unit 1 through a refrigerant air pipe 3 and a refrigerant liquid pipe 4 respectively, an outdoor liquid pipe valve 11 and an outdoor air pipe valve 12 are arranged on the outdoor unit 1, the outdoor liquid pipe valve 11 controls the opening and closing of the outdoor unit 1 end of the refrigerant liquid pipe 4, the outdoor air pipe valve 12 controls the opening and closing of the outdoor unit 1 end of the refrigerant air pipe 3, the indoor unit 2 is provided with an indoor air pipe valve 22 and an indoor liquid pipe valve 21, the indoor liquid pipe valve 21 controls the opening and closing of the refrigerant liquid pipe 4 at the indoor unit 2 end, the indoor air pipe valve 22 controls the opening and closing of the refrigerant air pipe 3 at the indoor unit 2 end, and the indoor unit 2 is provided with a refrigerant detector 23.
Further, it should be understood that, since the respective modules are merely set to illustrate the functional units of the apparatus of the present invention, the physical devices corresponding to the modules may be the processor itself, or a part of software in the processor, a part of hardware, or a part of a combination of software and hardware. Accordingly, the number of individual modules in the figures is merely illustrative.
Those skilled in the art will appreciate that the various modules in the apparatus may be adaptively split or combined. Such splitting or combining of specific modules does not cause the technical solution to deviate from the principle of the present invention, and therefore, the technical solution after splitting or combining falls within the protection scope of the present invention.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (9)
1. The refrigerant leakage control method of the air conditioner is characterized in that the air conditioner comprises an outdoor unit and an indoor unit, the indoor unit is connected with the outdoor unit through a refrigerant air pipe and a refrigerant liquid pipe respectively, an outdoor liquid pipe valve and an outdoor air pipe valve are arranged on the outdoor unit, the outdoor liquid pipe valve controls the opening and closing of the outdoor unit end of the refrigerant liquid pipe, the outdoor air pipe valve controls the opening and closing of the outdoor unit end of the refrigerant air pipe, an indoor air pipe valve and an indoor liquid pipe valve are arranged on the indoor unit, the indoor liquid pipe valve controls the opening and closing of the refrigerant liquid pipe at the indoor unit end, the indoor air pipe valve controls the opening and closing of the refrigerant air pipe at the indoor unit end, and a refrigerant detector is arranged on the indoor unit, and the method comprises the following steps:
detecting the concentration of the refrigerant in the indoor unit area through a refrigerant detector of the indoor unit to obtain a refrigerant detection result of the refrigerant detector;
selectively controlling the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner;
the step of selectively controlling the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner comprises the following steps:
acquiring the refrigerant detection result as the number of refrigerant detectors with refrigerant leakage;
when the number is smaller than or equal to a first preset number, an indoor air pipe valve and an indoor liquid pipe valve on an indoor unit corresponding to a refrigerant detector with refrigerant leakage are controlled to be closed;
after the step of controlling the indoor air pipe valve and the indoor liquid pipe valve on the indoor unit corresponding to the refrigerant detector with refrigerant leakage to be closed when the number is smaller than or equal to the first preset number, the method further comprises the following steps:
when the number is smaller than or equal to a second preset number, acquiring a second detection result of the refrigerant detector with refrigerant leakage again at intervals of a first preset time, and controlling the refrigerant leakage of the air conditioner according to the second detection result;
the step of controlling the refrigerant leakage of the air conditioner according to the second detection result comprises the following steps:
when the second detection result shows that the refrigerant leakage occurs, performing refrigerant leakage control of the air conditioner according to the operation mode of the air conditioner;
the operation mode comprises a refrigerating mode and a heating mode, and the step of controlling the refrigerant leakage of the air conditioner according to the operation mode of the air conditioner comprises the following steps:
when the operation mode of the air conditioner is a refrigeration mode, the outdoor liquid pipe valve and the outdoor air pipe valve are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop;
when the operation mode of the air conditioner is a heating mode, after the air conditioner is controlled to be switched to a refrigerating mode, the outdoor liquid pipe valve and the outdoor air pipe valve are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop.
2. The refrigerant leakage control method of an air conditioner according to claim 1, wherein the step of selectively controlling opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result to realize refrigerant leakage control of the air conditioner comprises:
and when the number is larger than a first preset number, controlling the outdoor liquid pipe valve and the outdoor air pipe valve on the outdoor unit to be closed, and then controlling the air conditioner to stop.
3. The refrigerant leakage control method of an air conditioner according to claim 2, wherein after the step of controlling an indoor air pipe valve and an indoor liquid pipe valve on an indoor unit corresponding to a refrigerant detector in which refrigerant leakage occurs to close when the number is equal to or smaller than a first preset number, the method further comprises:
and when the number is larger than the second preset number and smaller than or equal to the first preset number, controlling the refrigerant leakage of the air conditioner according to the operation mode of the air conditioner.
4. The refrigerant leakage control method of an air conditioner according to claim 3, wherein the step of "performing refrigerant leakage control of the air conditioner according to the second detection result" includes:
and when the second detection result is that the refrigerant leakage does not occur, controlling the air conditioner to continue to operate according to the current operation state.
5. The refrigerant leakage control method of an air conditioner according to claim 1, wherein the step of "realizing refrigerant recovery by controlling the outdoor liquid pipe valve and the outdoor gas pipe valve" comprises:
controlling the valve of the outdoor liquid pipe to be closed;
and after controlling the compressor of the air conditioner to perform the frequency-raising operation for a second preset time, controlling the outdoor air pipe valve to be closed so as to realize refrigerant recovery.
6. The refrigerant leakage control method of an air conditioner according to claim 5, further comprising:
when the number is smaller than or equal to a second preset number, a first fault prompt is sent out;
when the number is smaller than or equal to a second preset number and the second detection result is that refrigerant leakage occurs, a second fault prompt is sent out;
when the number is larger than the second preset number and smaller than the first preset number, a second fault reminder is sent out;
and when the number is greater than or equal to the first preset number, a third fault prompt is sent out.
7. The refrigerant leakage control method of an air conditioner according to any one of claims 1 to 6, further comprising:
and when the operation mode of the indoor unit is not a refrigerating mode or a heating mode, controlling the indoor air pipe valve and the indoor liquid pipe valve of the indoor unit to be closed.
8. The utility model provides a refrigerant leakage control system of air conditioner, its characterized in that, the air conditioner includes off-premises station and indoor set, connect through refrigerant trachea and refrigerant liquid pipe respectively between indoor set and the off-premises station, be provided with outdoor liquid pipe valve and outdoor trachea valve on the off-premises station, outdoor liquid pipe valve control the switching of the off-premises station end of refrigerant liquid pipe, outdoor trachea valve control the switching of the off-premises station end of refrigerant trachea, be provided with indoor trachea valve and indoor liquid pipe valve on the indoor set, indoor liquid pipe valve control the switching of refrigerant liquid pipe at the indoor set end, indoor trachea valve control the switching of refrigerant trachea at the indoor set end, be provided with the refrigerant detector on the indoor set, the system includes:
the refrigerant detection result acquisition module is configured to detect the concentration of the refrigerant in the indoor unit area through the refrigerant detector of the indoor unit so as to acquire a refrigerant detection result of the refrigerant detector;
the refrigerant leakage control module is configured to selectively control the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner;
the step of selectively controlling the opening and closing of the outdoor liquid pipe valve, the outdoor air pipe valve, the indoor liquid pipe valve and the indoor air pipe valve according to the refrigerant detection result so as to realize refrigerant leakage control of the air conditioner comprises the following steps:
acquiring the refrigerant detection result as the number of refrigerant detectors with refrigerant leakage;
when the number is smaller than or equal to a first preset number, an indoor air pipe valve and an indoor liquid pipe valve on an indoor unit corresponding to a refrigerant detector with refrigerant leakage are controlled to be closed;
when the number is smaller than or equal to the first preset number, after the step of controlling the indoor air pipe valve and the indoor liquid pipe valve on the indoor unit corresponding to the refrigerant detector with refrigerant leakage to be closed, the method further comprises the following steps:
when the number is smaller than or equal to a second preset number, acquiring a second detection result of the refrigerant detector with refrigerant leakage again at intervals of a first preset time, and controlling the refrigerant leakage of the air conditioner according to the second detection result;
the step of controlling the refrigerant leakage of the air conditioner according to the second detection result comprises the following steps:
when the second detection result shows that the refrigerant leakage occurs, performing refrigerant leakage control of the air conditioner according to the operation mode of the air conditioner;
the operation mode comprises a refrigerating mode and a heating mode, and the step of controlling the refrigerant leakage of the air conditioner according to the operation mode of the air conditioner comprises the following steps:
when the operation mode of the air conditioner is a refrigeration mode, the outdoor liquid pipe valve and the outdoor air pipe valve are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop;
when the operation mode of the air conditioner is a heating mode, after the air conditioner is controlled to be switched to a refrigerating mode, the outdoor liquid pipe valve and the outdoor air pipe valve are controlled to realize refrigerant recovery, and then the air conditioner is controlled to stop.
9. An air conditioner is characterized by comprising a refrigerant leakage control system of the air conditioner according to claim 8, an outdoor unit and an indoor unit, wherein the indoor unit is connected with the outdoor unit through a refrigerant air pipe and a refrigerant liquid pipe respectively, an outdoor liquid pipe valve and an outdoor air pipe valve are arranged on the outdoor unit, the outdoor liquid pipe valve controls the opening and closing of an outdoor unit end of the refrigerant liquid pipe, the outdoor air pipe valve controls the opening and closing of an outdoor unit end of the refrigerant air pipe, an indoor air pipe valve and an indoor liquid pipe valve are arranged on the indoor unit, the indoor liquid pipe valve controls the opening and closing of the refrigerant liquid pipe at an indoor unit end, the indoor air pipe valve controls the opening and closing of the refrigerant air pipe at an indoor unit end, and a refrigerant detector is arranged on the indoor unit.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210726027.3A CN115183396B (en) | 2022-06-23 | 2022-06-23 | Refrigerant leakage control method and system of air conditioner and air conditioner |
| PCT/CN2023/101402 WO2023246779A1 (en) | 2022-06-23 | 2023-06-20 | Refrigerant leakage control method and system for air conditioner, and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210726027.3A CN115183396B (en) | 2022-06-23 | 2022-06-23 | Refrigerant leakage control method and system of air conditioner and air conditioner |
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| CN115183396A CN115183396A (en) | 2022-10-14 |
| CN115183396B true CN115183396B (en) | 2024-02-23 |
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| CN202210726027.3A Active CN115183396B (en) | 2022-06-23 | 2022-06-23 | Refrigerant leakage control method and system of air conditioner and air conditioner |
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| WO (1) | WO2023246779A1 (en) |
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| CN115183396B (en) * | 2022-06-23 | 2024-02-23 | 青岛海尔空调电子有限公司 | Refrigerant leakage control method and system of air conditioner and air conditioner |
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| CN115183396A (en) | 2022-10-14 |
| WO2023246779A1 (en) | 2023-12-28 |
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