CN109813050A - Refrigerant leakage detection method and detection device for refrigerator - Google Patents
Refrigerant leakage detection method and detection device for refrigerator Download PDFInfo
- Publication number
- CN109813050A CN109813050A CN201811629053.4A CN201811629053A CN109813050A CN 109813050 A CN109813050 A CN 109813050A CN 201811629053 A CN201811629053 A CN 201811629053A CN 109813050 A CN109813050 A CN 109813050A
- Authority
- CN
- China
- Prior art keywords
- refrigerator
- refrigerant
- pressure value
- atmospheric pressure
- leakage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 72
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 230000004044 response Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 12
- 230000006872 improvement Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000010892 electric spark Methods 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
Present invention discloses a kind of refrigerant leakage detection method and detection device for refrigerator, detection method includes the following steps: to judge whether refrigerator doors close, if so, starting following step；Record the atmospheric pressure value in refrigerator；Judge whether refrigerant leaks according to atmospheric pressure value.The present invention is able to detect the leakage of refrigeration in refrigerator, if refrigerator compartment inner refrigerant leaks, will lead to air pressure in refrigerator and increases, when air pressure increases abnormal in refrigerator, can determine that and leak for refrigerant, thus starting protection measure.
Description
Technical field
The present invention relates to refrigerator arts more particularly to a kind of for the refrigerant leakage detection method of refrigerator and detection
Device.
Background technique
The refrigerant of many refrigerators is combustible refrigerant at present, and refrigerant is in compressor, evaporator, condenser, expansion
Flowing in the components such as valve can leak into refrigerator or outside refrigerator when refrigerant leakage, when leaking into outside refrigerator, by
Big in the refrigerator external space, concentration is not high, it is dangerous less, but when leaking into refrigerator inside, due to the limited volume of refrigerator inside, one
Denier refrigerant leakage will cause excessive concentration, refrigerator inside has the component that can generate electric spark or high temperature, when excessive concentration can
When combustion property refrigerant encounters electric spark or high temperature, explosion may be generated, serious safety problem is caused.
Summary of the invention
To solve the problems, such as refrigerator inner refrigerant leakage in the prior art, the purpose of the present invention is to provide one kind to be used for ice
The refrigerant leakage detection method and detection device of case.
One of for achieving the above object, one embodiment of the invention provides a kind of refrigerant leakage inspection for refrigerator
Survey method, includes the following steps:
Judge whether refrigerator doors close, if so, starting following step；
Record the atmospheric pressure value in refrigerator；
Judge whether refrigerant leaks according to atmospheric pressure value.
Further improvement as an embodiment of the present invention, described to judge whether refrigerant leaks according to air pressure difference, packet
It includes:
The atmospheric pressure value of different moments in refrigerator is recorded, and atmospheric pressure value is corresponding with the moment；
Further improvement as an embodiment of the present invention, further includes:
Calculate the difference of the atmospheric pressure value of different moments；
Judge whether difference is more than or equal to default maximum difference, if so, being determined as that refrigerant leaks.
Further improvement as an embodiment of the present invention, further includes:
Calculate the difference of the atmospheric pressure value of different moments；
The difference of different moments is compared, judges whether different moments difference and the variation of time are more than or equal to and presets most
Big ratio, if so, being determined as that refrigerant leaks.
Further improvement as an embodiment of the present invention, it is described to judge whether refrigerant leaks according to atmospheric pressure value, comprising:
Judge whether atmospheric pressure value is more than or equal to default maximum gas pressure value, if so, being determined as that refrigerant leaks.
Further improvement as an embodiment of the present invention, further comprises the steps of:
When detecting leakage of refrigerant, the leakage of user's refrigerant is reminded in the power supply of each component in closing refrigerator.
One of for achieving the above object, one embodiment of the invention provides a kind of refrigerant leakage inspection for refrigerator
Device is surveyed, including the open-close detection apparatus whether closed for detecting refrigerator doors, for detecting the air pressure transmission of refrigerator inside air pressure
Sensor, the processor for recording the memory of atmospheric pressure value, for judging and making a response.
Further improvement as an embodiment of the present invention, the open-close detection apparatus include being arranged in refrigerator body or ice
Magnet on one of chamber door body, and the magnet-sensitive switch being disposed therein on another.
Further improvement as an embodiment of the present invention further includes the timer for recording the air pressure time.
Further improvement as an embodiment of the present invention further includes the alarm device for reminding client's refrigerant to leak.
Compared with prior art, the invention has the following advantages: the present invention is able to detect the leakage freezed in refrigerator,
If refrigerator compartment inner refrigerant leaks, will lead in refrigerator air pressure and increase, when air pressure increases abnormal in refrigerator, can determine that for
Refrigerant leakage, thus starting protection measure.
Detailed description of the invention
Fig. 1 is the flow chart of refrigerant leakage detection method of the 1st embodiment of the invention for refrigerator；
Fig. 2 is the flow chart of refrigerant leakage detection method of the 2nd embodiment of the invention for refrigerator；
Fig. 3 is the flow chart of refrigerant leakage detection method of the 3rd embodiment of the invention for refrigerator；
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously
The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally
Transformation is included within the scope of protection of the present invention.
Embodiment 1
One embodiment of the invention provides a kind of refrigerant leakage detecting device for refrigerator, and the refrigerator includes between storing
Room, the open-close detection apparatus whether closed for detecting refrigerator doors is arranged in refrigerator inside, for detecting the gas of refrigerator inside air pressure
Pressure sensor, the processor for recording the memory of atmospheric pressure value, for judging and making a response.
Specifically, the open-close detection apparatus includes the magnet being arranged in one of refrigerator body or refrigerator door,
And it is disposed therein the magnet-sensitive switch on another, and when refrigerator doors are separated with storage compartment, the meta position of magnet and magnet-sensitive switch
Variation is set, the changes of magnetic field for causing magnet-sensitive switch to detect passes to detect that refrigerator doors are opened alternatively, it is also possible to use
The mechanical rotary switch of system or other can detect refrigerator doors opening and closing sensor；
The baroceptor is for detecting refrigerator inside air pressure, when refrigerator doors are opened, between storage indoor air pressure with
Atmospheric pressure is equal, when refrigerator doors are closed, since internal temperature of refrigerator is low, will form negative pressure, baroceptor detects refrigerator
Air pressure inside reduces, and when refrigerant leaks into refrigerator inside, air pressure can be made to increase；Exception, when refrigerator defrost, can make to deposit
Indoor temperature rises 3~5 ° between storage, it will usually cause indoor air pressure between storage to rise, but the variation of the air pressure, with refrigeration
It is different that air pressure caused by agent leaks and gasifies increases variation degree；
Detection device further includes memory, processor etc., records and judges for program, and makes a response.
Further, it when needing to detect the air pressure change situation of different time, also sets up in refrigerator for recording air pressure
The timer of time, atmospheric pressure value is corresponding with the moment.
Further, detection device further includes the alarm device for reminding client's refrigerant to leak.
The present embodiment is used for the refrigerant leakage detection method of refrigerator, as shown in Figure 1, including the following steps:
Judge whether refrigerator doors close, if so, starting following step；
Record the atmospheric pressure value in refrigerator；
Judge whether refrigerant leaks according to atmospheric pressure value.
Due to the principle of detection method detection, it is refrigerant leakage after refrigerator inside gasification, leads to the gas in refrigerator
Pressure increases, and after refrigeration for refrigerator, usually will form negative pressure in refrigerator, and after opening refrigerator doors at this time, air pressure inside can be big with the external world
Air pressure is equal, also will form the phenomenon that air pressure increases, it is therefore desirable under the premise of refrigerator doors are closed always, by detecting air pressure
Value judges the leakage of refrigerant；
It is further, described to judge whether refrigerant leaks according to air pressure difference, comprising:
The atmospheric pressure value of different moments in refrigerator is recorded, and atmospheric pressure value is corresponding with the moment；
Further include:
Calculate the difference DELTA P1 of the atmospheric pressure value of different moments；
Judge whether difference DELTA P1 is more than or equal to default maximum difference Δ Pmax, if so, being determined as that refrigerant leaks.
Specifically, the air pressure atmospheric pressure value of record is corresponding with the time, when persistently freezing in refrigerator, in usual refrigerator
It can gradually decrease, until maintaining to a lower pressure-reduction level, the i.e. variation and time correlation of air pressure, when refrigerator defrost,
The temperature of refrigerator inside gradually rises, and internal air pressure is caused to will be slow raising, and when refrigerant leakage, due to refrigerant
Gasification, causes the air pressure moment of refrigerator inside to increase, and the raising of the air pressure is increased with the air pressure of defrost on time dimension and showed
It is entirely different, when being worked normally according to refrigerator, air pressure normally in raised same time t1 the raised amplitude of air pressure maximum value
It is denoted as default maximum difference Δ Pmax, when refrigerant leakage, since the air pressure of refrigerator inside can be increased rapidly, same time t1
Interior air pressure elevation amplitude Δ P1 is more than or equal to default maximum difference Δ Pmax；It is detected by baroceptor and judges that Δ P1 is
It is no to be greater than default maximum difference Δ Pmax, it can judge the leakage of refrigerant.
Further, it further comprises the steps of:
When detecting leakage of refrigerant, the leakage of user's refrigerant is reminded in the power supply of each component in closing refrigerator；
Encountering refrigerator inside in order to avoid the refrigerant of the gasification of excessive concentration has the component that can generate electric spark or high temperature
The risk exploded powers off each component of electrification, after judging refrigerant leakage to prevent spark ignition quick-fried
On the other hand fried gas issues alarm or warning, user's refrigerator is reminded exception occur, prevent user from opening refrigerator doors and carry out
Other operations.
Compared with prior art, the present embodiment has the advantages that
(1) present invention is able to detect the leakage freezed in refrigerator, if refrigerator compartment inner refrigerant leaks, will lead to refrigerator
Interior air pressure increases, and when air pressure increases abnormal in refrigerator, can determine that and leaks for refrigerant, thus starting protection measure；
(2) by the air pressure change of time dimension, air pressure raising caused by the leakage by refrigerant and refrigerator are worked normally
When occur air pressure raising distinguish, to keep the leak detection result of the refrigerant more accurate.
Embodiment 2
Join Fig. 2 provided by another embodiment, the present embodiment the difference from embodiment 1 is that: refrigerant leakage is sentenced
Disconnected program is different.
The detection method of the present embodiment further include:
The difference for calculating the atmospheric pressure value of different moments is respectively P2, P3, and atmospheric pressure value is corresponding with moment t2, t3；
The difference of different moments is compared, judges whether variation (P3-P2)/(t3-t2)=k of different moments difference is big
In being equal to default maximum ratio, if so, being determined as that refrigerant leaks.
Specifically, when refrigerant leaks, there is abnormal raising in air pressure in refrigerator, during the time is from t2 to t3,
Air pressure changes to P3 from P2, and amplitude of variation (P3-P2)/(t3-t2) is denoted as k, when the value of k is more than or equal to default maximum ratio,
Judge that refrigerant leaks；Default maximum ratio, when being that refrigerator works normally, the time equal with this time interval of t3-t2
The attainable maximum ratio of institute in length.
Due to refrigerator in use, internal storage article is different, the temperature difference that volume is different, needs to freeze, refrigerator are occupied
The environment of work usually changes, and the absolute value of air pressure change is usually little, in order to avoid volume change generates air pressure change
Influence and air pressure change the little problem of absolute value, the present embodiment is using the variation relation of air pressure and time as judgement
Standard illustrates that the air pressure change in refrigerator is abnormal, principle class when the variation of air pressure difference and time are greater than default maximum ratio
The relationship of the case where being similar to detected slope variation or velocity variations and acceleration change excludes refrigerator work according to the variation of slope
When making environmental change, the interference of inaccuracy is detected caused by the variation of air pressure numerical value is smaller.
Compared with prior art, the present embodiment has the advantages that the variation by detecting air pressure change, by air pressure
Variation combine with the time, the interference for avoiding environmental change from generating, thus when detecting refrigerant leakage, air pressure in refrigerator
Abnormal variation judges that refrigerant leaks.
Embodiment 3
Join Fig. 3 provided by another embodiment, the present embodiment the difference from embodiment 1 is that: refrigerant leakage is sentenced
Disconnected program is different.
The detection method of the present embodiment further include:
Judge whether atmospheric pressure value is more than or equal to default maximum gas pressure value P1, if so, being determined as that refrigerant leaks.
The judgment method logic is simple, lower attainable maximum gas pressure value of refrigerator normal operation, is denoted as and presets most
Atmospheric value Pmax causes air pressure to increase when the leakage of a large amount of refrigerants, and atmospheric pressure value P1 can be more than or equal to Pmax, works as detection
To the exception atmospheric pressure value P1 when, sound an alarm and starting protection measure.
Compared with prior art, the present embodiment has the advantages that through simple decision logic, to a large amount of refrigeration
The leakage of agent is effectively detected and is judged, the effect of protection is played.
Illustrating only for feasible embodiment of the invention is described in detail in those listed above, they are simultaneously
It is non-to limit the scope of the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention or change should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of refrigerant leakage detection method for refrigerator, which comprises the steps of:
Judge whether refrigerator doors close, if so, starting following step；
Record the atmospheric pressure value in refrigerator；
Judge whether refrigerant leaks according to atmospheric pressure value.
2. detection method according to claim 1, which is characterized in that described to judge whether refrigerant is let out according to air pressure difference
Leakage, comprising:
The atmospheric pressure value of different moments in refrigerator is recorded, and atmospheric pressure value is corresponding with the moment.
3. detection method according to claim 2, which is characterized in that further include:
Calculate the difference of the atmospheric pressure value of different moments；
Judge whether difference is more than or equal to default maximum difference, if so, being determined as that refrigerant leaks.
4. detection method according to claim 2, which is characterized in that further include:
Calculate the difference of the atmospheric pressure value of different moments；
The difference of different moments is compared, judges whether different moments difference and the variation of time are more than or equal to default high specific
Value, if so, being determined as that refrigerant leaks.
5. detection method according to claim 1, which is characterized in that described to judge whether refrigerant is let out according to atmospheric pressure value
Leakage, comprising:
Judge whether atmospheric pressure value is more than or equal to default maximum gas pressure value, if so, being determined as that refrigerant leaks.
6. detection method according to claim 1, which is characterized in that further comprise the steps of:
When detecting leakage of refrigerant, the leakage of user's refrigerant is reminded in the power supply of each component in closing refrigerator.
7. a kind of refrigerant leakage detecting device for refrigerator, which is characterized in that including for detecting whether refrigerator doors close
Open-close detection apparatus, for detecting the baroceptor of refrigerator inside air pressure, for recording the memory of atmospheric pressure value, for sentencing
Processor that is disconnected and making a response.
8. detection device according to claim 7, which is characterized in that the open-close detection apparatus includes being arranged in refrigerator sheet
Magnet on one of body or refrigerator door, and the magnet-sensitive switch being disposed therein on another.
9. detection device according to claim 7, which is characterized in that further include the timer for recording the air pressure time.
10. detection device according to claim 7, which is characterized in that further include for reminding client's refrigerant to leak
Alarm device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629053.4A CN109813050B (en) | 2018-12-28 | 2018-12-28 | Refrigerant leakage detection method and device for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811629053.4A CN109813050B (en) | 2018-12-28 | 2018-12-28 | Refrigerant leakage detection method and device for refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109813050A true CN109813050A (en) | 2019-05-28 |
| CN109813050B CN109813050B (en) | 2023-03-17 |
Family
ID=66601500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811629053.4A Active CN109813050B (en) | 2018-12-28 | 2018-12-28 | Refrigerant leakage detection method and device for refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109813050B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157168A (en) * | 2019-12-20 | 2020-05-15 | 珠海格力电器股份有限公司 | Dry burning detection method and device |
| CN113720072A (en) * | 2021-09-23 | 2021-11-30 | 江嫦清 | Refrigerator and control method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3913521A1 (en) * | 1989-04-25 | 1990-10-31 | Gerald Hemm | Detecting leakage points in coolant circuit of refrigeration system - measuring pressure and temp. of vaporised coolant at suction side of compressor and comparing with stipulated value |
| DE4114529A1 (en) * | 1991-05-03 | 1993-02-11 | Aero Tech Klima Kaelte | Safety arrangement esp. for ammonia-filled refrigeration plate - provides gas-tight container for take=up of material leaking from either of two interconnected pressure vessels |
| JPH109758A (en) * | 1996-06-25 | 1998-01-16 | Hitachi Ltd | Refrigerator |
| EP1270292A2 (en) * | 2001-06-27 | 2003-01-02 | Behr GmbH & Co. | Method for detecting refrigerant loss in a refrigerant circuit and cooling or air conditioning installation |
| JP2003106730A (en) * | 2001-09-27 | 2003-04-09 | Toshiba Corp | Refrigerator |
| CN1615420A (en) * | 2002-01-15 | 2005-05-11 | 株式会社东芝 | Refrigerator having alarm device for alarming leakage of refrigerant |
| CN1764812A (en) * | 2003-09-19 | 2006-04-26 | 株式会社东芝 | Refrigerant leakage detecting device and refrigerator using the same |
| JP2009192162A (en) * | 2008-02-15 | 2009-08-27 | Panasonic Corp | Refrigerator |
| CN102095302A (en) * | 2011-01-18 | 2011-06-15 | 合肥美的荣事达电冰箱有限公司 | Sensing device for opening and closing door, refrigerator and installation method for sensing device for opening and closing door |
| CN105121968A (en) * | 2013-05-09 | 2015-12-02 | 沈棋燮 | Ventilation unit using temperature and atmospheric pressure equilibrium and preservation system using same |
| CN105222507A (en) * | 2015-09-21 | 2016-01-06 | 青岛海尔股份有限公司 | Refrigerator and control method thereof |
-
2018
- 2018-12-28 CN CN201811629053.4A patent/CN109813050B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3913521A1 (en) * | 1989-04-25 | 1990-10-31 | Gerald Hemm | Detecting leakage points in coolant circuit of refrigeration system - measuring pressure and temp. of vaporised coolant at suction side of compressor and comparing with stipulated value |
| DE4114529A1 (en) * | 1991-05-03 | 1993-02-11 | Aero Tech Klima Kaelte | Safety arrangement esp. for ammonia-filled refrigeration plate - provides gas-tight container for take=up of material leaking from either of two interconnected pressure vessels |
| JPH109758A (en) * | 1996-06-25 | 1998-01-16 | Hitachi Ltd | Refrigerator |
| EP1270292A2 (en) * | 2001-06-27 | 2003-01-02 | Behr GmbH & Co. | Method for detecting refrigerant loss in a refrigerant circuit and cooling or air conditioning installation |
| JP2003106730A (en) * | 2001-09-27 | 2003-04-09 | Toshiba Corp | Refrigerator |
| CN1615420A (en) * | 2002-01-15 | 2005-05-11 | 株式会社东芝 | Refrigerator having alarm device for alarming leakage of refrigerant |
| US20050103029A1 (en) * | 2002-01-15 | 2005-05-19 | Keizou Kawahara | Refrigerator having alarm device for alarming leakage of refrigerant |
| CN1764812A (en) * | 2003-09-19 | 2006-04-26 | 株式会社东芝 | Refrigerant leakage detecting device and refrigerator using the same |
| JP2009192162A (en) * | 2008-02-15 | 2009-08-27 | Panasonic Corp | Refrigerator |
| CN102095302A (en) * | 2011-01-18 | 2011-06-15 | 合肥美的荣事达电冰箱有限公司 | Sensing device for opening and closing door, refrigerator and installation method for sensing device for opening and closing door |
| CN105121968A (en) * | 2013-05-09 | 2015-12-02 | 沈棋燮 | Ventilation unit using temperature and atmospheric pressure equilibrium and preservation system using same |
| CN105222507A (en) * | 2015-09-21 | 2016-01-06 | 青岛海尔股份有限公司 | Refrigerator and control method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157168A (en) * | 2019-12-20 | 2020-05-15 | 珠海格力电器股份有限公司 | Dry burning detection method and device |
| CN113720072A (en) * | 2021-09-23 | 2021-11-30 | 江嫦清 | Refrigerator and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109813050B (en) | 2023-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109631228B (en) | Method and system for judging rapid leakage of refrigerant of refrigeration system | |
| WO2003060400A1 (en) | Refrigerator having alarm device for alarming leakage of refrigerant | |
| WO2003027587A1 (en) | Refrigerator-freezer, controller of refrigerator-freezer, and method for determination of leakage of refrigerant | |
| CN106123426B (en) | Refrigerator and its control method | |
| CN109813050A (en) | Refrigerant leakage detection method and detection device for refrigerator | |
| CN110848875B (en) | Refrigerant leakage detection method and air conditioner | |
| CN110822760B (en) | Air conditioner refrigerant system, refrigerant leakage detection method and air conditioner | |
| JP2008249239A (en) | Control method of cooling device, cooling device and refrigerating storage | |
| CN104566763A (en) | Control method and control device of air conditioning system and air conditioning system | |
| CN110940052A (en) | Air conditioner refrigerant leakage detection method and air conditioner using same | |
| CN106017804B (en) | Airtight test method and refrigerating equipment for refrigerating equipment | |
| CN111721066A (en) | Temperature detection control method for freezing chamber of refrigerator | |
| CN109781363A (en) | The detection method and detection device of refrigerator leakproofness | |
| CN107894560B (en) | The chip test system and its method that oil-free air dosage reduces | |
| JP4141671B2 (en) | refrigerator | |
| CN106052291B (en) | Refrigerating equipment and its control method | |
| JPH11211293A (en) | Refrigerator | |
| CN109813049A (en) | Refrigerator drainpipe ice stifled detection method and detection device | |
| KR101164815B1 (en) | Refrigerator and controlling method for the same | |
| KR20130022464A (en) | Method for detecting leak of refigerant in refrigerator | |
| CN114018427A (en) | Temperature detection device, storage equipment, refrigerator and storage chamber temperature control method | |
| KR101317307B1 (en) | Refrigerator and control method thereof | |
| JP2006329551A (en) | Defrosting control device for refrigerator | |
| CN116164469B (en) | Control method of refrigerator | |
| KR100882630B1 (en) | Method of operating a multi refrigerating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 266101 Haier Road, Laoshan District, Qingdao, Qingdao, Shandong Province, No. 1 Applicant after: Haier Smart Home Co., Ltd. Address before: 266101 Haier Industrial Park, 1 Haier Road, Laoshan District, Shandong, Qingdao Applicant before: QINGDAO HAIER JOINT STOCK Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |