CN114659232B - Refrigerator and refrigerant leakage detection method thereof - Google Patents
Refrigerator and refrigerant leakage detection method thereof Download PDFInfo
- Publication number
- CN114659232B CN114659232B CN202210507108.4A CN202210507108A CN114659232B CN 114659232 B CN114659232 B CN 114659232B CN 202210507108 A CN202210507108 A CN 202210507108A CN 114659232 B CN114659232 B CN 114659232B
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- Prior art keywords
- temperature
- refrigerator
- leakage
- refrigerant
- detecting
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- 239000003507 refrigerant Substances 0.000 title claims abstract description 31
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000007613 environmental effect Effects 0.000 claims abstract description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005057 refrigeration Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
-
- 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
Abstract
The invention discloses a refrigerator and a refrigerant leakage detection method thereof, and relates to the technical field of refrigerators. Before the refrigerator leaves the factory, the refrigerant leakage detection method of the invention includes that the temperature tb of the muffler corresponding to the stopping moment of the compressor in different environmental temperature ta intervals is detected, and t=tb-ta is recorded as a theoretical value; in the use process of a user, detecting the instantaneous stop temperature tb ' and the environment temperature ta ' at the moment in the start-stop process of the compressor, and recording t ' =tb ' -ta ' as actual values; and judging whether t' -t corresponding to each ring temperature interval meets a corresponding threshold S to judge whether the refrigerant leaks or not. The invention judges the leakage of the refrigerant quantity of the system by detecting the temperature rise of the muffler, is simple, accurate, fast and low in cost, monitors the leakage of the refrigerant of the refrigerator in real time, and reminds a user to transfer food materials or inform the user of timely door-on maintenance after the refrigerator is thoroughly uncooled after the leakage occurs.
Description
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a refrigerator refrigerant leakage detection method and a refrigerator using the same.
Background
The refrigerator refrigerating system is formed by combining and welding pipelines made of various materials, is influenced by factors such as welding technology, user environment, pipeline materials and the like, and can cause the problem of refrigerant leakage in the using process of the refrigerator, so that the current industry has no simple and effective detection scheme.
Leakage of a refrigerator refrigeration system is usually slow, the leakage process is generally long for days or even weeks, and part of the refrigeration capacity is reserved in the refrigerator during the leakage period, so that the refrigerator is not easy to find by a user. If leakage occurs, the safety hidden danger is brought to the user; secondly, the refrigeration of the refrigerator is affected, and the food stored by a user is easy to deteriorate.
Disclosure of Invention
The invention aims to provide a refrigerator and a refrigerant leakage detection method thereof, which are simple, accurate, fast and low in cost, and solve the problems of the prior art by detecting the temperature rise of an air return pipe to judge the refrigerant leakage of a system.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a refrigerator refrigerant leakage detection method, which comprises the following steps:
before the refrigerator leaves the factory, recording t=tb-ta as a theoretical value by detecting the muffler temperature tb corresponding to the shutdown moment of the compressor in different environmental temperature ta intervals;
in the use process of a user, detecting the instantaneous stop temperature tb ' and the environment temperature ta ' at the moment in the start-stop process of the compressor, and recording t ' =tb ' -ta ' as actual values;
and judging whether t' -t corresponding to each ring temperature interval meets a corresponding threshold S to judge whether the refrigerant leaks or not.
Further, the ring temperature interval comprises a first temperature interval lower than or equal to 10 ℃, a second temperature interval between 10 ℃ and 25 ℃ and a third temperature interval higher than 25 ℃.
Further, in the first temperature interval, the threshold S is set to S1; in the second temperature interval, the threshold S is set to S2; in the third temperature interval, the threshold S is set to S3.
Further, when the refrigerant leakage is judged, an alarm is sent out.
Further, the leakage degree is judged by judging the value interval of the difference value of t' -t-S, and the corresponding alarm is triggered.
Further, when T1 > T' -T-S > 0, a slight leakage is judged;
when T2 is more than T' -T-S is more than or equal to T1, judging that the leakage is moderate;
when T' -T-S is not less than T2, it is judged that the leakage is heavy.
Further, the values of T1 and T2 are 2 ℃ and 4 ℃ respectively.
Further, the alarm mode of the alarm is that the controller displays leakage information on a refrigerator display panel and/or alarms through an APP.
A refrigerator uses the refrigerant leakage detection method.
The refrigerator is characterized in that a temperature sensor for detecting the temperature of the air return pipe in real time is arranged on the air return pipe of the refrigerator, and a heat preservation structure is arranged on the outer side of the temperature sensor.
In the refrigerating cycle of the refrigerator, proper amount of refrigerant is in the operation process of the compressor, after the evaporation heat absorption of the evaporator and the heat exchange of the air return pipe, the air return temperature is generally controlled to be about +/-1, condensation water dripping can be generated by the excessively low air return temperature, liquid impact of the compressor can be caused, the refrigerating efficiency of the whole refrigerator can be influenced by the excessively high air return temperature, and lubricating oil carbonization can be caused, so that the most important link of matching of the refrigerating system is the control of the air return pipe temperature.
Changes in the typical muffler temperature during refrigerator operation: 1. in the starting process, the temperature of the air return pipe at the moment of starting the compressor has a rapid falling process, and then the air return pipe quickly reaches balance and is stabilized within the range of ring temperature +/-1 ℃; 2. in the stopping process, the compressor stops running, the return air temperature is raised to the ambient temperature, and the circulation is repeated.
If the quantity of the refrigerant is too small, the refrigerant in the evaporator is evaporated in advance, so that the outlet temperature of the evaporator is higher, the return air temperature is higher than the ambient temperature after heat exchange of the return air heat exchange tube, and the return air temperature is higher as the quantity of the refrigerant is smaller, and finally the return air temperature is stabilized at a higher temperature and then is kept stable.
The invention has the following beneficial effects:
the invention judges the leakage of the refrigerant quantity of the system by detecting the temperature rise of the muffler, is simple, accurate, fast and low in cost, monitors the leakage of the refrigerant of the refrigerator in real time, and reminds a user to transfer food materials or inform the user of timely door-opening maintenance after the refrigerator is thoroughly uncooled after the leakage occurs; the method is convenient for assisting in judging the fault reason of the refrigerator which is not refrigerated.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Detailed Description
A refrigerator refrigerant leakage detection method comprises the following steps:
before the refrigerator leaves the factory, recording t=tb-ta as a theoretical value by detecting the muffler temperature tb corresponding to the shutdown moment of the compressor in different environmental temperature ta intervals;
in the use process of a user, detecting the instantaneous stop temperature tb ' and the environment temperature ta ' at the moment in the start-stop process of the compressor, and recording t ' =tb ' -ta ' as actual values;
and judging whether t' -t corresponding to each ring temperature interval meets a corresponding threshold S to judge whether the refrigerant leaks or not.
Further, the ring temperature interval comprises a first temperature interval lower than or equal to 10 ℃, a second temperature interval between 10 ℃ and 25 ℃ and a third temperature interval higher than 25 ℃.
Further, in the first temperature interval, the threshold S is set to 2 ℃; in the second temperature interval, the threshold S is set to 4 ℃; in the third temperature interval, the threshold S is set to 6 ℃.
Further, when judging that the refrigerant leaks, alarming through the APP; and judging the leakage degree by judging the value interval of the difference value of t' -t-S, and triggering the non-frequent alarm reminding.
That is, when 4 ℃ is more than t' -t is more than 2 ℃, the leakage is judged to be mild;
when the temperature is more than 6 ℃ and t' -t is more than or equal to 4 ℃, judging that the leakage is moderate;
when t' -t is not less than 6 ℃, the leakage is judged to be heavy.
A refrigerator uses the refrigerant leakage detection method.
The refrigerator is characterized in that a temperature sensor for detecting the temperature of the air return pipe in real time is arranged on the air return pipe of the refrigerator, a heat preservation structure is arranged on the outer side of the temperature sensor, and the temperature detection accuracy is prevented from being influenced by the temperature of the compressor shell by the aid of the heat preservation structure.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. The refrigerator refrigerant leakage detection method is characterized by comprising the following steps of:
before the refrigerator leaves the factory, recording t=tb-ta as a theoretical value by detecting the muffler temperature tb corresponding to the shutdown moment of the compressor in different environmental temperature ta intervals;
in the use process of a user, detecting the instantaneous stop temperature tb ' and the environment temperature ta ' at the moment in the start-stop process of the compressor, and recording t ' =tb ' -ta ' as actual values;
judging whether t' -t corresponding to each ring temperature interval meets a corresponding threshold S to judge whether the refrigerant leaks or not;
when judging that the refrigerant leaks, judging a value interval in which a difference value of t' -t-S is positioned to judge the leakage degree, and triggering a corresponding alarm;
when T1 > T' -T-S > 0, a slight leak is judged;
when T2 is more than T' -T-S is more than or equal to T1, judging that the leakage is moderate;
when T' -T-S is more than or equal to T2, judging that the leakage is heavy;
wherein the values of T1 and T2 are respectively 2 ℃ and 4 ℃.
2. The method of claim 1, wherein the ring temperature range includes a first temperature range of 10 ℃ or lower, a second temperature range of 10 ℃ to 25 ℃ or higher, and a third temperature range of 25 ℃ or higher.
3. The method according to claim 2, wherein the threshold S is set to S1 in the first temperature range;
in the second temperature interval, the threshold S is set to S2;
in the third temperature interval, the threshold S is set to S3.
4. The method for detecting refrigerant leakage in a refrigerator according to claim 3, wherein an alarm is given when it is judged that the refrigerant leakage occurs.
5. The method of claim 4, wherein the alarm means is a controller displaying leakage information on a display panel of the refrigerator and/or an alarm by APP.
6. A refrigerator using a refrigerant leakage detecting method according to any one of claims 1 to 5.
7. The refrigerator of claim 6, wherein a temperature sensor for detecting the temperature of the air return pipe in real time is arranged on the air return pipe of the refrigerator, and a heat preservation structure is arranged on the outer side of the temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507108.4A CN114659232B (en) | 2022-05-10 | 2022-05-10 | Refrigerator and refrigerant leakage detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210507108.4A CN114659232B (en) | 2022-05-10 | 2022-05-10 | Refrigerator and refrigerant leakage detection method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114659232A CN114659232A (en) | 2022-06-24 |
| CN114659232B true CN114659232B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210507108.4A Active CN114659232B (en) | 2022-05-10 | 2022-05-10 | Refrigerator and refrigerant leakage detection method thereof |
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| Publication number | Publication date |
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| CN114659232A (en) | 2022-06-24 |
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