CN111023437A - Refrigerant leakage detection method of air conditioner and air conditioner - Google Patents
Refrigerant leakage detection method of air conditioner and air conditioner Download PDFInfo
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- CN111023437A CN111023437A CN201911363484.5A CN201911363484A CN111023437A CN 111023437 A CN111023437 A CN 111023437A CN 201911363484 A CN201911363484 A CN 201911363484A CN 111023437 A CN111023437 A CN 111023437A
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- 238000001514 detection method Methods 0.000 title claims abstract description 91
- 239000003507 refrigerant Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 230000003213 activating effect Effects 0.000 claims abstract description 5
- 238000005057 refrigeration Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000011896 sensitive detection Methods 0.000 description 1
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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
- F24F11/62—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
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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
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/10—Pressure
- F24F2140/12—Heat-exchange fluid pressure
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a refrigerant leakage detection method of an air conditioner and the air conditioner. The method comprises the steps of activating running time monitoring of the air conditioner when preset detection conditions are met, obtaining exhaust pressure and first outdoor temperature of an outdoor compressor when monitoring time reaches a preset threshold value, judging whether a refrigerating system of the air conditioner leaks refrigerants or not according to the first outdoor temperature and the exhaust pressure value, and obtaining a detection result. By adopting the technical scheme of the invention, the temperature detection of the key part of the refrigerating system is not needed, the influence of the ambient temperature on the refrigerant leakage detection is reduced, and the false alarm phenomenon is not easy to generate.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a refrigerant leakage detection method of an air conditioner and the air conditioner.
Background
The indoor unit and the outdoor unit of the existing split air conditioner are separated independently, and the indoor unit and the outdoor unit are assembled and installed by selecting an online pipe with proper length according to the installation environment. The installation mode in the market is that copper nuts are used at two ends of the online pipe to be connected with a pipe joint of an indoor unit or a stop valve joint of an outdoor unit. For the split air conditioner, the installation mode is flexible and convenient, but the reliability of the brazing connection at the position of the refrigeration system is relatively poor, and the refrigerant of the air conditioner has the risk of leakage after a long time in combination with the severe outdoor environment. After the refrigerant seriously leaks, the air conditioner is started to operate for a long time under the condition that a user does not know, and the damage risk of the compressor can be increased.
The method judges whether the refrigerant leakage occurs by collecting the temperature of the key position of the refrigeration system and the indoor and outdoor ambient temperatures and combining other parameters according to the numerical values of all the temperatures. However, since the temperature point at the key position of the refrigeration system is greatly influenced by the ambient temperature, the accuracy of the temperature judgment method is poor, and the phenomenon of false alarm is easily caused.
Disclosure of Invention
The embodiment of the invention provides a refrigerant leakage detection method of an air conditioner and the air conditioner, which do not need to detect the temperature of the key part of a refrigeration system, reduce the influence of the ambient temperature on the refrigerant leakage detection and are not easy to generate false alarm.
An embodiment of the present invention provides a refrigerant leakage detection method for an air conditioner, including:
if the preset detection condition is met, activating the running time monitoring of the air conditioner;
when the monitored running time reaches a preset threshold value, acquiring a discharge pressure value of a compressor discharge port in the outdoor unit, and acquiring a first outdoor temperature at the current moment;
and judging whether a refrigerating system of the air conditioner leaks a refrigerant or not according to the first outdoor temperature and the exhaust pressure value, and obtaining a detection result.
Further, according to the first outdoor temperature and the exhaust pressure value, it is determined whether a refrigerant leakage occurs in a refrigeration system of the air conditioner, and a detection result is obtained, specifically:
determining a first exhaust pressure end point value and a second exhaust pressure end point value according to a preset temperature interval corresponding to the first outdoor temperature;
when the exhaust pressure value is larger than the first exhaust pressure endpoint value, determining that the detection result is as follows: the refrigerating system does not leak refrigerant;
when the exhaust pressure value is greater than or equal to the second exhaust pressure endpoint value and less than or equal to the first exhaust pressure endpoint value, determining that the detection result is: the refrigeration system generates first-level refrigerant leakage;
when the exhaust pressure value is smaller than the second exhaust pressure endpoint value, determining that the detection result is as follows: and the refrigerating system generates second-level refrigerant leakage.
Further, after the obtaining of the detection result, the method further includes: and feeding back an alarm signal to the user according to the detection result.
Further, the feeding back an alarm signal to the user according to the detection result specifically includes:
when the detection result shows that the refrigerant leakage does not occur in the refrigerating system, controlling the yellow display lamp and the red display lamp to be on and off; the yellow display lamp and the red display lamp are arranged on the display lamp panel of the indoor unit;
when the detection result shows that the first-level refrigerant leakage occurs in the refrigeration system, the yellow display lamp is controlled to flicker, and the red display lamp is controlled to be on and off;
and when the detection result shows that the refrigerating system has second-level refrigerant leakage, controlling the yellow display lamp to be on and off, controlling the red display lamp to flicker, and simultaneously controlling the compressor to be forcibly stopped.
Further, after obtaining the detection result that the refrigerant leakage does not occur in the refrigeration system, the method further includes:
after a preset time interval, acquiring a second exhaust pressure value of the compressor exhaust port, and acquiring a second outdoor temperature at the current moment;
and judging whether the refrigerating system of the air conditioner leaks the refrigerant or not according to the second outdoor temperature and the second exhaust pressure value, and obtaining a second detection result.
Further, when the preset temperature interval is [20 ℃, 25 ℃), the endpoint value of the first exhaust pressure is 1.6Mpa, and the endpoint value of the second exhaust pressure is 1.2 Mpa;
when the preset temperature interval is at the temperature of 25 ℃ and 30 ℃, the endpoint value of the first exhaust pressure is 1.8MPa, and the endpoint value of the second exhaust pressure is 1.4 MPa;
when the preset temperature interval is [30 ℃, 35 ℃), the endpoint value of the first exhaust pressure is 2.0MPa, and the endpoint value of the second exhaust pressure is 1.5 MPa;
when the preset temperature interval is at the temperature of 35 ℃ and 40 ℃, the endpoint value of the first exhaust pressure is 2.2MPa, and the endpoint value of the second exhaust pressure is 1.7 MPa;
when the preset temperature interval is [40 ℃, infinity), the end point value of the first exhaust pressure is 2.4Mpa, and the end point value of the second exhaust pressure is 1.9 Mpa.
Further, the preset detection conditions are specifically as follows: the air conditioner is in a refrigeration mode, the indoor environment temperature is larger than or equal to a first temperature threshold, and the outdoor environment temperature is larger than or equal to a second temperature threshold.
Further, the first temperature threshold is 24 ℃ and the second temperature threshold is 20 ℃.
Another embodiment of the present invention correspondingly provides an air conditioner, including: the air conditioner comprises an indoor unit, an outdoor unit, a memory, a processor and an air conditioner control program which is stored on the memory and can run on the processor;
the outdoor unit comprises a compressor and a pipeline connected with an exhaust port of the compressor, a pressure measuring device for detecting exhaust pressure is arranged on the pipeline of the exhaust port, and the pressure measuring device is electrically connected with the processor; the outdoor unit is provided with an outdoor air inlet, an outdoor temperature sensor for detecting the outdoor environment temperature is arranged at the outdoor air inlet, and the outdoor temperature sensor is electrically connected with the processor;
the indoor unit is provided with an indoor air inlet, an indoor temperature sensor for detecting the indoor environment temperature is arranged at the air position of the indoor air inlet, and the indoor temperature sensor is electrically connected with the processor;
the air conditioner control program is executed by the processor to realize the steps of the refrigerant leakage detection method of the air conditioner.
Therefore, the invention provides a refrigerant leakage detection method of an air conditioner and the air conditioner. The method comprises the steps of activating running time monitoring of the air conditioner when preset detection conditions are met, obtaining exhaust pressure and first outdoor temperature of an outdoor compressor when monitoring time reaches a preset threshold value, judging whether a refrigerating system of the air conditioner leaks refrigerants or not according to the first outdoor temperature and the exhaust pressure value, and obtaining a detection result. Compared with the prior art that the refrigerant leakage detection is carried out through the outdoor and indoor ambient temperatures, the refrigerant leakage detection method and the refrigerant leakage detection device can detect the refrigerant leakage through the outdoor temperature and the compressor exhaust pressure value, do not need to carry out temperature detection on key parts of a refrigeration system, reduce the influence of the ambient temperature on the refrigerant leakage detection, and are not easy to generate false alarm. In addition, the invention carries out detection through the exhaust pressure value, the reaction is more sensitive, and the control is more accurate.
Further, after the detection result is obtained, an alarm signal is fed back to the user to inform the user of the relevant message. Furthermore, the warning mode of the invention is that the yellow display lamp and the red display lamp on the display lamp panel of the indoor unit are turned off or flash, the warning mode is more visual and more perceptible, and when the second-level refrigerant leaks, the compressor can be controlled to be forcibly shut down for protection, so that the compressor is prevented from losing efficacy due to long-term idling.
Drawings
Fig. 1 is a schematic flow chart illustrating a refrigerant leakage detection method of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a refrigerant leakage detection method of an air conditioner according to another embodiment of the present invention;
fig. 3 is a schematic flow chart illustrating a refrigerant leakage detection method of an air conditioner according to another embodiment of the present invention;
FIG. 4 is a flowchart illustrating an embodiment of a refrigerant detection alarm method according to the present invention;
fig. 5 is a schematic structural diagram of an embodiment of an air conditioner provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, which is a schematic flow chart of an embodiment of a refrigerant leakage detection method of an air conditioner provided by the present invention, the method includes steps 101 to 103, and the steps specifically include:
step 101: and if the preset detection condition is met, activating the running time monitoring of the air conditioner.
In this embodiment, the air conditioner detects whether a preset refrigerant leakage detection condition is met or not in the operation process, and when the detection condition is met, the operation time monitoring of the air conditioner is activated, timing is started, and the operation time of the air conditioner is monitored.
In this embodiment, the preset detection conditions are specifically: the air conditioner is in a refrigeration mode, the indoor environment temperature is larger than or equal to a first temperature threshold, and the outdoor environment temperature is larger than or equal to a second temperature threshold.
As an example of this embodiment, the first temperature threshold may be set to 24 ℃ but not limited thereto, and the second temperature threshold may be set to 20 ℃ or more, that is, the indoor ambient temperature is 24 ℃ or more, and the outdoor ambient temperature is 20 ℃ or more. The temperature threshold may be specifically adjusted or modified according to the actual situation.
As an example of this embodiment, the present invention configures a temperature sensor at an air inlet of an indoor unit to detect an indoor ambient temperature. Meanwhile, the outdoor unit air inlet is provided with the temperature sensor to detect the outdoor environment temperature. The setting position of the temperature sensor can be adjusted according to the model and the structure.
Step 102: when the monitoring operation time reaches a preset threshold value, acquiring a discharge pressure value of an exhaust port of a compressor in the outdoor unit, and acquiring a first outdoor temperature at the current moment.
In this embodiment, the preset threshold may be, but is not limited to, 15 minutes, and the monitoring threshold may be extended or shortened according to the performance of the device.
In the present embodiment, a pressure measuring device for detecting a discharge pressure is provided on a pipe line of a discharge port of the outdoor unit compressor.
Step 103: and judging whether the refrigerating system of the air conditioner leaks the refrigerant or not according to the first outdoor temperature and the exhaust pressure value, and obtaining a detection result.
In this embodiment, step 103 specifically includes:
determining a first exhaust pressure end point value and a second exhaust pressure end point value according to a preset temperature interval corresponding to the first outdoor temperature;
when the exhaust pressure value is larger than the first exhaust pressure endpoint value, determining that the detection result is as follows: the refrigerating system has no refrigerant leakage;
when the exhaust pressure value is greater than or equal to the second exhaust pressure endpoint value and less than or equal to the first exhaust pressure endpoint value, determining that the detection result is as follows: the refrigeration system generates first-level refrigerant leakage;
when the exhaust pressure value is smaller than the second exhaust pressure endpoint value, determining that the detection result is as follows: the refrigerating system generates second-level refrigerant leakage.
In the embodiment, the discharge pressure intervals of the compressor under the normal operation at the current outdoor environment temperature are distinguished by dividing different preset temperature intervals, and the first discharge pressure endpoint value and the second discharge pressure endpoint value are determined according to the discharge pressure intervals. The refrigerant leakage is also divided into first-level refrigerant leakage and second-level refrigerant leakage, the first-level refrigerant leakage is common refrigerant leakage, and the current refrigerant leakage on the surface causes the compressor to be incapable of working normally. The second-level refrigerant leakage is serious refrigerant leakage, the current refrigerant leakage on the surface can seriously damage the compressor, and immediate shutdown protection is recommended.
In this embodiment, if the detection result is that the refrigerant leakage does not occur in the refrigeration system, after a preset time interval, obtaining a second discharge pressure value of the discharge port of the compressor, and obtaining a second outdoor temperature at the current moment; and judging whether the refrigerating system of the air conditioner leaks the refrigerant or not according to the second outdoor temperature and the second exhaust pressure value, and obtaining a second detection result. That is, if the refrigerant leakage does not occur in the first detection, the determination is repeated after a certain time interval, so as to ensure the stability and reliability of the detection method. The time interval may be set to, but is not limited to, 30 minutes.
Referring to fig. 2, fig. 2 is a schematic flow chart illustrating a refrigerant leakage detection method of an air conditioner according to another embodiment of the present invention. Fig. 2 differs from fig. 1 in that after the detection result is obtained, an alarm signal is fed back to the user according to the detection result. For example, when refrigerant leakage is detected, the feedback is given to the user through various alarm modes, such as sound alarm, display lamp alarm, remote short message sending, WeChat alarm, and alarm associated with other internet of things devices.
Referring to fig. 3, fig. 3 is a schematic flow chart illustrating a refrigerant leakage detection method of an air conditioner according to another embodiment of the present invention. Fig. 3 differs from fig. 2 in that the present process uses a display light to feedback an alarm signal to the user. And a yellow display lamp and a red display lamp are arranged on the display lamp panel of the indoor unit.
When the detection result shows that the refrigerant leakage does not occur in the refrigerating system, the yellow display lamp and the red display lamp are controlled to be on and off;
when the detection result shows that the first-level refrigerant leakage occurs in the refrigeration system, the yellow display lamp is controlled to flicker, and the red display lamp is controlled to be on and off;
and when the detection result shows that the second-level refrigerant leakage occurs in the refrigerating system, the yellow display lamp is controlled to be turned off, the red display lamp is controlled to flicker, and the compressor is controlled to be stopped forcibly.
In the embodiment, after the leakage of the second-level refrigerant is confirmed, the invention not only gives an alarm to a user, but also controls the compressor to be forcibly stopped, and avoids long-time idling so as to protect the compressor.
In this embodiment, if it is determined that there is no refrigerant leakage for the first time, the determination is repeated every 30 minutes, and if the first-level refrigerant leakage is detected any time, the yellow display lamp flashes until the alarm is stopped when the power is turned off or interrupted. And when the leakage of the second-level refrigerant is detected at any time, the red display lamp flickers, and the compressor enters a forced shutdown protection state, and the alarm can be stopped until shutdown or power failure.
In the present embodiment, the relationship between the temperature interval, the exhaust pressure endpoint value, and the alarm manner is preset, and specifically, but not limited to, see fig. 4. As shown in fig. 4:
when the preset temperature interval is at the temperature of [20 ℃, 25 ℃), the endpoint value of the first exhaust pressure is 1.6Mpa, and the endpoint value of the second exhaust pressure is 1.2 Mpa;
when the preset temperature interval is at the temperature of 25 ℃ and 30 ℃, the endpoint value of the first exhaust pressure is 1.8MPa, and the endpoint value of the second exhaust pressure is 1.4 MPa;
when the preset temperature interval is [30 ℃, 35 ℃), the endpoint value of the first exhaust pressure is 2.0MPa, and the endpoint value of the second exhaust pressure is 1.5 MPa;
when the preset temperature interval is at 35 ℃, 40 ℃, the endpoint value of the first exhaust pressure is 2.2MPa, and the endpoint value of the second exhaust pressure is 1.7 MPa;
when the preset temperature interval is [40 ℃, infinity), the end point value of the first exhaust pressure is 2.4Mpa, and the end point value of the second exhaust pressure is 1.9 Mpa.
The method activates the running time monitoring of the air conditioner when the preset detection condition is met, acquires the exhaust pressure and the first outdoor temperature of the outdoor compressor when the monitoring time reaches the preset threshold value, and judges whether the refrigerant leakage occurs in the refrigerating system of the air conditioner according to the first outdoor temperature and the exhaust pressure value to obtain the detection result. Compared with the prior art that the refrigerant leakage detection is carried out through the outdoor and indoor ambient temperatures, the refrigerant leakage detection method and the refrigerant leakage detection device can detect the refrigerant leakage through the outdoor temperature and the compressor exhaust pressure value, do not need to carry out temperature detection on key parts of a refrigeration system, reduce the influence of the ambient temperature on the refrigerant leakage detection, and are not easy to generate false alarm. In addition, the invention carries out detection through the exhaust pressure value, the reaction is more sensitive, and the control is more accurate.
Further, after the detection result is obtained, an alarm signal is fed back to the user to inform the user of the relevant message. Furthermore, the warning mode of the invention is that the yellow display lamp and the red display lamp on the display lamp panel of the indoor unit are turned off or flash, the warning mode is more visual and more perceptible, and when the second-level refrigerant leaks, the compressor can be controlled to be forcibly shut down for protection, so that the compressor is prevented from losing efficacy due to long-term idling.
Example 2
Referring to fig. 5, fig. 5 is a schematic structural diagram of an embodiment of an air conditioner provided in the present invention. The air conditioner includes: the indoor unit 501, the outdoor unit 502, the memory 503, the processor 504 and the air conditioner control program which is stored on the memory and can run on the processor 504;
the outdoor unit 502 includes a compressor and a pipe connected to an exhaust port of the compressor, and a pressure measuring device for detecting an exhaust pressure is provided on the exhaust port pipe. The pressure measuring device is electrically connected with the processor 504; the outdoor unit 502 has an outdoor air inlet, and an outdoor temperature sensor for detecting the outdoor environment temperature is arranged at the outdoor air inlet and is electrically connected with the processor 504;
the indoor unit 501 is provided with an indoor air inlet, an indoor temperature sensor for detecting the indoor environment temperature is arranged at the air position of the indoor air inlet, and the indoor temperature sensor is electrically connected with the processor 504;
the air conditioner control program, when executed by the processor, implements the steps of the method for detecting refrigerant leakage of an air conditioner of embodiment 1.
Therefore, compared with the existing air conditioner adopting a temperature detection method, the air conditioner provided by the invention detects the pressure at the exhaust port of the compressor, has the advantages of sensitive detection response, accurate control and difficulty in occurrence of false alarm.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (9)
1. A refrigerant leakage detection method of an air conditioner is characterized by comprising the following steps:
if the preset detection condition is met, activating the running time monitoring of the air conditioner;
when the monitored running time reaches a preset threshold value, acquiring a discharge pressure value of a compressor discharge port in the outdoor unit, and acquiring a first outdoor temperature at the current moment;
and judging whether a refrigerating system of the air conditioner leaks a refrigerant or not according to the first outdoor temperature and the exhaust pressure value, and obtaining a detection result.
2. The refrigerant leakage detection method of an air conditioner according to claim 1, wherein the determining whether the refrigerant leakage occurs in the refrigeration system of the air conditioner according to the first outdoor temperature and the discharge pressure value obtains a detection result, specifically:
determining a first exhaust pressure end point value and a second exhaust pressure end point value according to a preset temperature interval corresponding to the first outdoor temperature;
when the exhaust pressure value is larger than the first exhaust pressure endpoint value, determining that the detection result is as follows: the refrigerating system does not leak refrigerant;
when the exhaust pressure value is greater than or equal to the second exhaust pressure endpoint value and less than or equal to the first exhaust pressure endpoint value, determining that the detection result is: the refrigeration system generates first-level refrigerant leakage;
when the exhaust pressure value is smaller than the second exhaust pressure endpoint value, determining that the detection result is as follows: and the refrigerating system generates second-level refrigerant leakage.
3. The refrigerant leakage detecting method of an air conditioner according to claim 2, further comprising, after the obtaining of the detection result:
and feeding back an alarm signal to the user according to the detection result.
4. The refrigerant leakage detection method of an air conditioner according to claim 3, wherein the step of feeding back an alarm signal to a user according to the detection result specifically comprises:
when the detection result shows that the refrigerant leakage does not occur in the refrigerating system, controlling the yellow display lamp and the red display lamp to be on and off; the yellow display lamp and the red display lamp are arranged on the display lamp panel of the indoor unit;
when the detection result shows that the first-level refrigerant leakage occurs in the refrigeration system, the yellow display lamp is controlled to flicker, and the red display lamp is controlled to be on and off;
and when the detection result shows that the refrigerating system has second-level refrigerant leakage, controlling the yellow display lamp to be on and off, controlling the red display lamp to flicker, and simultaneously controlling the compressor to be forcibly stopped.
5. The method for detecting refrigerant leakage of an air conditioner according to claims 2 to 4, further comprising, after obtaining the detection result that no refrigerant leakage occurs in the refrigeration system, the step of:
after a preset time interval, acquiring a second exhaust pressure value of the compressor exhaust port, and acquiring a second outdoor temperature at the current moment;
and judging whether the refrigerating system of the air conditioner leaks the refrigerant or not according to the second outdoor temperature and the second exhaust pressure value, and obtaining a second detection result.
6. The refrigerant leakage detecting method of an air conditioner according to claim 5,
when the preset temperature interval is at the temperature of [20 ℃, 25 ℃), the endpoint value of the first exhaust pressure is 1.6MPa, and the endpoint value of the second exhaust pressure is 1.2 MPa;
when the preset temperature interval is at the temperature of 25 ℃ and 30 ℃, the endpoint value of the first exhaust pressure is 1.8MPa, and the endpoint value of the second exhaust pressure is 1.4 MPa;
when the preset temperature interval is [30 ℃, 35 ℃), the endpoint value of the first exhaust pressure is 2.0MPa, and the endpoint value of the second exhaust pressure is 1.5 MPa;
when the preset temperature interval is at the temperature of 35 ℃ and 40 ℃, the endpoint value of the first exhaust pressure is 2.2MPa, and the endpoint value of the second exhaust pressure is 1.7 MPa;
when the preset temperature interval is [40 ℃, infinity), the end point value of the first exhaust pressure is 2.4Mpa, and the end point value of the second exhaust pressure is 1.9 Mpa.
7. The refrigerant leakage detection method of an air conditioner according to claim 1, wherein the preset detection conditions are specifically: the air conditioner is in a refrigeration mode, the indoor environment temperature is larger than or equal to a first temperature threshold, and the outdoor environment temperature is larger than or equal to a second temperature threshold.
8. The refrigerant leakage detecting method of claim 7, wherein the first temperature threshold is 24 ℃ and the second temperature threshold is 20 ℃.
9. An air conditioner is characterized by comprising an indoor unit, an outdoor unit, a memory, a processor and an air conditioner control program which is stored on the memory and can run on the processor;
the outdoor unit comprises a compressor and a pipeline connected with an exhaust port of the compressor, a pressure measuring device for detecting exhaust pressure is arranged on the pipeline of the exhaust port, and the pressure measuring device is electrically connected with the processor; the outdoor unit is provided with an outdoor air inlet, an outdoor temperature sensor for detecting the outdoor environment temperature is arranged at the outdoor air inlet, and the outdoor temperature sensor is electrically connected with the processor;
the indoor unit is provided with an indoor air inlet, an indoor temperature sensor for detecting the indoor environment temperature is arranged at the air position of the indoor air inlet, and the indoor temperature sensor is electrically connected with the processor;
the air conditioner control program, when executed by the processor, implements the steps of the refrigerant leakage detection method of the air conditioner as recited in any one of claims 1 to 9.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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