CN107255387A - A kind of defrosting method of refrigerator - Google Patents
A kind of defrosting method of refrigerator Download PDFInfo
- Publication number
- CN107255387A CN107255387A CN201710517945.4A CN201710517945A CN107255387A CN 107255387 A CN107255387 A CN 107255387A CN 201710517945 A CN201710517945 A CN 201710517945A CN 107255387 A CN107255387 A CN 107255387A
- Authority
- CN
- China
- Prior art keywords
- heater strip
- defrost
- evaporator
- heater
- voltage applied
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- 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.)
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Classifications
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
- F25D21/006—Defroster control with electronic control circuits
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention provides a kind of defrosting method of refrigerator.Refrigerator includes evaporator and multiple heater strips；Each heater strip is horizontally extending, and short transverse of multiple heater strips along evaporator is arranged at intervals；Each heater strip is configured to directly or indirectly heating evaporation device；Multiple heater strips include the first heater strip；And defrosting method includes：When evaporator needs defrost, identical voltage is applied to each heater strip, so that each heater strip heating carries out defrost；Defrost temperature is detected, and the voltage applied on the first heater strip is reduced according to defrost temperature；When defrost temperature reaches the first preset temperature value, all heater strips are closed.Can be according to the frosting degree of diverse location, defrost temperature on evaporator, the appropriate thermal discharge for reducing heater strip at diverse location, so that the evaporator of refrigerator can defrost on demand, it is extremely important to change the frost of evaporator diverse location on demand, it so can both reduce power consumption, defrost duration is reduced, fresh-keeping effect can also be strengthened.
Description
Technical field
The present invention relates to refrigerating storing field, more particularly to a kind of defrosting method of refrigerator.
Background technology
Refrigerator is to maintain a kind of refrigeration plant of constant low temperature, is also that one kind makes food or other articles keep constant low temperature
The product for civilian use of cold conditions.Air-cooled technology is by built-in hiding cooler (such as the evaporator of coolant circulating system) to flowing through it
Air freezed, force circulating cold air to flow by fan, so that cold air is uniformly distributed in refrigerator each compartment, realize
Refrigeration.When air passes through evaporator surface in refrigerator, the moisture in air can condense in evaporator surface, due to evaporator temperature
Spend low, frost layer is formed after a period of time, causes evaporator heat transfer efficiency to decrease up to evaporator and is completely plugged and fails, drop
Low refrigerator operational efficiency, it is necessary to carry out defrost after operation a period of time.
Existing defrost is generally provided with electric heater in base of evaporator, when evaporator surface frost layer reaches certain thickness,
Refrigerator stops refrigeration, and heater is started working, heating and melting frost layer.During defrost is carried out to evaporator, the bottom of evaporator
Portion is first heated, therefore the frost of base of evaporator is first begin to melt, and the frost in the middle part of finisher and top is just gradually melted,
Therefore time for being heated of the heated device of base of evaporator is long, be very easy to cause the working of plastics of base of evaporator by
There is the phenomenon of aged deterioration in heated time length.Frost on evaporator is in the process gradually melted as water from the bottom to top
In to absorb substantial amounts of heat, and the thawing time is more very long, there is serious heat waste phenomenon.
The content of the invention
Inventor thinks that the mode of present refrigerator inside defrost is essentially all to carry out defrost based on experience value, but refrigerator
According to the change of normal service condition and environment, internal frosting velocity is different, and, because for evaporator in itself
Relation of wind direction etc., evaporator diverse location frosting velocity is also different, is carried out in base of evaporator provided with electric heater
Frost on defrost, evaporator will absorb substantial amounts of heat during gradually thawing from the bottom to top is water, and when melting
Between it is more very long, there is serious heat waste phenomenon.
Therefore, the present invention is intended to provide a kind of defrosting method for refrigerator, can make evaporator defrost on demand, on demand defrost
Not only include carrying out defrost according to the frosting position of evaporator, in addition to apply the heat being adapted according to frost layer amount at each position
Amount, it is extremely important to change the frost of evaporator diverse location on demand, so can both reduce power consumption, reduces defrost duration, also may be used
To strengthen fresh-keeping effect.
Specifically, the invention provides a kind of defrosting method of refrigerator, wherein the refrigerator include evaporator and it is multiple plus
Heated filament；Each heater strip is horizontally extending, and short transverse interval of multiple heater strips along the evaporator
Set；Each heater strip is configured to directly or indirectly heat the evaporator；Multiple heater strips include first and added
Heated filament；And the defrosting method includes：
When the evaporator needs defrost, identical voltage is applied to each heater strip, so as to add described in each
Heated filament heating carries out defrost；
Defrost temperature is detected, and the voltage applied on first heater strip is reduced according to the defrost temperature；
When the defrost temperature reaches the first preset temperature value, all heater strips are closed.
Alternatively, the voltage applied on first heater strip that reduced according to the defrost temperature includes：
When the defrost temperature reaches the second preset temperature value, the voltage applied on first heater strip is reduced；Institute
The second preset temperature value is stated less than first preset temperature value.
Alternatively, the voltage applied on first heater strip that reduced according to the defrost temperature also includes：
When the defrost temperature reaches three preset temperature values, the electricity applied on first heater strip is further reduced
Pressure；3rd preset temperature value is less than first preset temperature value, and the 3rd preset temperature value is more than described second
Preset temperature value.
Alternatively, the voltage applied on first heater strip that reduced according to the defrost temperature also includes：
When the defrost temperature reaches four preset temperature values, the electricity applied on first heater strip is further reduced
Pressure；4th preset temperature value is less than first preset temperature value, and the 4th preset temperature value is more than the described 3rd
Preset temperature value.
Alternatively, the voltage applied on first heater strip is reduced according to 2% to 5% range of decrease.
Alternatively, multiple heater strips also include the second heater strip, and second heater strip is arranged at described first and added
The lower section of heated filament.
Alternatively, multiple heater strips also include the 3rd heater strip, and the 3rd heater strip is arranged at described first and added
The top of heated filament；The defrosting method also includes：The voltage applied on the 3rd heater strip is reduced according to the defrost temperature.
Alternatively, reduce what is applied on first heater strip and the 3rd heater strip simultaneously according to the defrost temperature
Voltage；And
During the voltage applied on first heater strip and the 3rd heater strip is reduced, applied on first heater strip
Plus the range of decrease of voltage be less than the range of decrease of voltage applied on the 3rd heater strip.
Alternatively, the voltage applied on first heater strip is reduced using pulse width modulating technology.
Alternatively, the refrigerator also includes cooling chamber and temperature sensor, the evaporator, multiple heater strips and institute
Temperature sensor is stated to be arranged in the cooling chamber, and the temperature sensor is arranged at the top of the evaporator；
The temperature sensor is configured to detect the defrost temperature；And
Second preset temperature value is 3.6 DEG C to 4.4 DEG C；
First preset temperature value is 6.6 DEG C to 7.4 DEG C.
The defrosting method of the refrigerator of the present invention can suitably subtract according to the frosting degree of diverse location, defrost temperature on evaporator
The thermal discharge of heater strip at few diverse location so that the evaporator of refrigerator can defrost on demand, change evaporator diverse location on demand
Frost is extremely important, so can both reduce power consumption, reduces defrost duration, can also strengthen fresh-keeping effect.
According to the accompanying drawings to the detailed description of the specific embodiment of the invention, those skilled in the art will be brighter
Above-mentioned and other purposes, the advantages and features of the present invention.
Brief description of the drawings
Some specific embodiments of the present invention are described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter.
Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these
What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：
Fig. 1 is the schematic diagram of refrigerator according to an embodiment of the invention；
Fig. 2 is the schematic local structural graph of refrigerator according to an embodiment of the invention；
Fig. 3 is the schematic side elevation of structure shown in Fig. 2；
Fig. 4 is the indicative flowchart of the defrosting method of refrigerator according to an embodiment of the invention.
Embodiment
Fig. 1 is the schematic diagram of refrigerator according to an embodiment of the invention；Fig. 2 is according to one implementation of the present invention
The schematic local structural graph of the refrigerator of example；Fig. 3 is the schematic side elevation of structure shown in Fig. 2.As shown in Figure 1, Figure 2 and Figure 3,
The embodiments of the invention provide a kind of refrigerator.The refrigerator may include casing 10, door body, refrigeration system and frosting situation detection means
And defrosting heater.
There are multiple storing compartments in casing 10.Storing compartment is used to store food.Multiple storages in the embodiment of the present invention
Thing compartment may include the refrigerating chamber 11 of often storage vegetables, and its temperature-control range is general at -5 DEG C to 7 DEG C.Multiple storing compartments may be used also
Including refrigerating chamber 12, temperature-changing chamber etc..Door body can be to be multiple, and each door body is configured to controllably to open or close between a storing
Room.Further, casing 10 also has compressor bin, cooling chamber, and connects the ducting system of storing compartment and cooling chamber.It is cold
But room can be at the rear side of refrigerating chamber 12.In Fig. 1, the air duct cover board between cooling chamber and refrigerating chamber 12 is not shown.
Refrigerant system configuration is into cold is provided to reduce indoor temperature between storing.Specifically, refrigeration system can be compression
Formula refrigeration system, it includes compressor, condenser, throttling arrangement and evaporator 20 etc..Compressor may be disposed in compressor bin.
Evaporator 20 may be disposed in cooling chamber, be configured with entering the gas temperature in the refrigerant reduction cooling chamber in it, to pass through
By ducting system make storing between indoor temperature be maintained in preset temperature or preset temperature range.
Frosting situation detection means may be disposed in cooling chamber, for making refrigerator according to the detection of frosting situation detection means
As a result judge whether refrigerator needs defrost.In some embodiments, frosting situation detection means includes temperature sensor, temperature
Sensor is arranged at the top of evaporator, is configured to detect the temperature of evaporator and the defrost temperature of evaporator.At other
In embodiment, temperature sensor may be disposed on evaporator.In other embodiment, frosting situation detection means includes
One or more differential pressure pick-ups 60.When differential pressure pick-up 60 is multiple, length of multiple differential pressure pick-ups 60 along evaporator 20
Direction is spent to be arranged at intervals；Each differential pressure pick-up 60 is configured to detect the short transverse setting along evaporator 20 of evaporator 20
Pressure differential between two positions.The two of the short transverse setting along evaporator 20 that any two differential pressure pick-up 60 is detected
Individual position identical can also be differed, and preferably be differed., also can be according to the compression of refrigerator in some alternate embodiments
The continuous operating time of machine and/or the total run time of compressor judge whether evaporator needs defrost.
Defrosting heater can have multiple heater strips 40.Each heater strip 40 can be horizontally extending, and it is multiple plus
Short transverse of the heated filament 40 along evaporator 20 is arranged at intervals, and each heater strip 40 is configured to directly or indirectly heating evaporation device
20, so that multiple heater strips 40 can be heated at multiple different height positions to evaporator 20.Further, defrosting is heated
Device may also include heat-conducting plate 30.Heat-conducting plate 30 is arranged at the side of evaporator 20, and thermally contacts and (connect with evaporator 20
Touch is thermally coupled).Each heater strip 40 is thermally contacted with heat-conducting plate 30.Heat-conducting plate 30 can be used for making heat spread at heater strip 40
Onto evaporator 20, defrosting efficiency is improved.In some preferred embodiments of the present invention, heat-conducting plate 30 is arranged at multiple heating
Between silk 40 and evaporator 20, the heat transfer that each heater strip 40 is produced to evaporator 20.It is preferable to carry out at other
In example, multiple heater strips 40 are arranged in heat-conducting plate 30.
Fig. 4 is the indicative flowchart of the defrosting method of refrigerator according to an embodiment of the invention.As shown in figure 4, special
Not, the embodiment of the present invention additionally provides a kind of defrosting method of refrigerator.Multiple heater strips 40 may include the first heater strip.Every
The highest heating power of heater strip 40 is preferably the same, i.e., using the multiple heater strips 40 of identical.Defrosting method may include：
When evaporator needs defrost, identical voltage is applied to each heater strip, so that each heater strip heating is carried out
Defrost.When evaporator needs defrost, close can also at least the inlet air door of each storing compartment of refrigerator.
Defrost temperature is detected, and the voltage applied on the first heater strip is reduced according to defrost temperature.According to the knot of evaporator 20
The rule of frost, the general bottom frosting velocity of evaporator 20 is faster than the upper end of evaporator 20, in defrost, can suitably reduce some heating
The voltage of silk 40, it is possible to decrease the caloric value of the heater strip 40, so that defrost on demand can be realized, so that the relatively thin local frost of evaporator
Layer obtains appropriate heat, saves electric energy.
When defrost temperature reaches the first preset temperature value, all heater strips are closed.Temperature sensor is arranged at evaporation
The top of device；Temperature sensor is configured to detect defrost temperature；And first preset temperature value be 6.6 DEG C to 7.4 DEG C, such as 6.9
DEG C, 7 DEG C etc..
Specifically, in some specific embodiments of the present invention, reduced and applied on the first heater strip according to defrost temperature
Voltage may include：When defrost temperature reaches the second preset temperature value, the voltage applied on the first heater strip of reduction；Second is pre-
If temperature value is less than the first preset temperature value.Second preset temperature value can be 3.6 DEG C to 4.4 DEG C, such as 3.9 DEG C, 4 DEG C.Enter
One step, the voltage applied on the first heater strip is reduced according to defrost temperature and be may also include：Reach that the 3rd presets in defrost temperature
During temperature value, the voltage further applied on the first heater strip of reduction；3rd preset temperature value is less than the first preset temperature value, and
3rd preset temperature value is more than the second preset temperature value.And, when defrost temperature reaches four preset temperature values, further drop
The voltage applied on low first heater strip；4th preset temperature value is less than the first preset temperature value, and the 4th preset temperature value is big
In the 3rd preset temperature value.3rd preset temperature value can be 4.6 DEG C to 5.4 DEG C, such as 4.9 DEG C, 5 DEG C.4th preset temperature
Value can be 5.6 DEG C to 6.4 DEG C, such as 5.9 DEG C, 6 DEG C.
In some embodiments of the invention, reduced using pulse width modulating technology (i.e. pwm) on the first heater strip
The voltage of application.Moreover, the voltage applied on the first heater strip can be reduced according to 2% to 5% range of decrease, such as according to 3%
The range of decrease.In some alternate embodiments of the present invention, the voltage applied on the first heater strip, example can be also reduced according to preset value
Such as, reduction 3V, 5V, 10V etc. every time, can be set according to actual conditions such as the resistance of the evaporator of specifically size and heater strip
Put.
In some embodiments of the invention, multiple heater strips also include the second heater strip, and the second heater strip is arranged at the
The lower section of one heater strip.Preferably, the second heater strip can be bottom heater strip 40, due to the bottom of evaporator 20 frost layer most
Afterwards, the second heater strip 40 can be made to be heated according to highest heating power all the time, i.e., do not adjust the second heating during whole defrosting
The voltage applied on silk.The present invention some alternate embodiments in, also can be as needed, i.e., according to defrost temperature reduce or
Increase the voltage applied on the second heater strip.
In some embodiments of the invention, multiple heater strips may also include the 3rd heater strip, and the 3rd heater strip is arranged at
The top of first heater strip；Defrosting method also includes：The voltage applied on the 3rd heater strip is reduced according to defrost temperature.Further
Ground preferably, the voltage applied on the first heater strip and the 3rd heater strip can be reduced simultaneously according to defrost temperature.Moreover, in reduction
During the voltage applied on the first heater strip and the 3rd heater strip, the range of decrease of the voltage applied on the first heater strip is less than the 3rd heating
The range of decrease of the voltage applied on silk.For example, the voltage applied on the 3rd heater strip can be reduced according to 5% to 8% range of decrease.At this
In some alternate embodiments of invention, it can reduce what is applied on the first heater strip and the 3rd heater strip respectively according to defrost temperature
Voltage.For example, when defrost temperature reaches the second preset temperature value, the voltage applied on the first heater strip of reduction；Second presets
Temperature value is less than the first preset temperature value.When defrost temperature reaches five preset temperature values, apply on the 3rd heater strip of reduction
Voltage；3rd preset temperature value is smaller than the second preset temperature value.
In some embodiments of the invention, the quantity of heater strip 40 can be at least 4.In defrost, except bottom
Outside heater strip, the voltage applied on remaining every heater strip can all be reduced according to defrost temperature.Certainly, the heating of bottom
The voltage applied on silk can be also adjusted according to defrost temperature.
In some embodiments of the invention, multiple heater strips 40 can be divided into multigroup, and every group of heater strip may include at least one
Individual heater strip.In defrost, in addition to one group of heater strip of bottom, the voltage applied on remaining every group of heater strip all can be according to change
White temperature is reduced, and the opportunity and amplitude that voltage is reduced in this group of heater strip should be identical.For example, this group of heater strip includes first
The voltage applied in heater strip, this group of heater strip on every heater strip should be with the voltage applied on the first heater strip while being adjusted
It is whole, and adjustment identical amplitude.That is, the voltage applied on the first heater strip is in adjustment, one or many above it
Root heater strip, and and/or one or more heater strip below simultaneously be adjusted according to the identical range of decrease.Certainly, most
The voltage applied on one group of heater strip of lower section can be also adjusted according to defrost temperature.
So far, although those skilled in the art will appreciate that detailed herein have shown and described multiple showing for the present invention
Example property embodiment, still, still can be direct according to present disclosure without departing from the spirit and scope of the present invention
It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognized
It is set to and covers other all these variations or modifications.
Claims (10)
1. a kind of defrosting method of refrigerator, wherein the refrigerator includes evaporator and multiple heater strips；Each heater strip edge
Horizontal direction extends, and short transverse of multiple heater strips along the evaporator is arranged at intervals；Each heater strip is matched somebody with somebody
It is set to and directly or indirectly heats the evaporator；Multiple heater strips include the first heater strip；And the defrosting method
Including：
When the evaporator needs defrost, identical voltage is applied to each heater strip, so that each heater strip
Heating carries out defrost；
Defrost temperature is detected, and the voltage applied on first heater strip is reduced according to the defrost temperature；
When the defrost temperature reaches the first preset temperature value, all heater strips are closed.
2. defrosting method according to claim 1, wherein
The voltage applied on first heater strip that reduced according to the defrost temperature includes：
When the defrost temperature reaches the second preset temperature value, the voltage applied on first heater strip is reduced；Described
Two preset temperature values are less than first preset temperature value.
3. defrosting method according to claim 2, wherein
The voltage applied on first heater strip that reduced according to the defrost temperature also includes：
When the defrost temperature reaches three preset temperature values, the voltage applied on first heater strip is further reduced；
3rd preset temperature value is less than first preset temperature value, and the 3rd preset temperature value is more than described second and preset
Temperature value.
4. defrosting method according to claim 3, wherein
The voltage applied on first heater strip that reduced according to the defrost temperature also includes：
When the defrost temperature reaches four preset temperature values, the voltage applied on first heater strip is further reduced；
4th preset temperature value is less than first preset temperature value, and the 4th preset temperature value is more than the described 3rd and preset
Temperature value.
5. the defrosting method according to Claims 2 or 3 or 4, wherein
The voltage applied on first heater strip is reduced according to 2% to 5% range of decrease.
6. defrosting method according to claim 1, wherein
Multiple heater strips also include the second heater strip, and second heater strip is arranged at the lower section of first heater strip.
7. defrosting method according to claim 1, wherein
Multiple heater strips also include the 3rd heater strip, and the 3rd heater strip is arranged at the top of first heater strip；
The defrosting method also includes：The voltage applied on the 3rd heater strip is reduced according to the defrost temperature.
8. defrosting method according to claim 7, wherein
Reduce the voltage applied on first heater strip and the 3rd heater strip simultaneously according to the defrost temperature；And
During the voltage applied on first heater strip and the 3rd heater strip is reduced, apply on first heater strip
The range of decrease of voltage is less than the range of decrease of the voltage applied on the 3rd heater strip.
9. defrosting method according to claim 1, wherein
The voltage applied on first heater strip is reduced using pulse width modulating technology.
10. defrosting method according to claim 2, wherein
The refrigerator also includes cooling chamber and temperature sensor, the evaporator, multiple heater strips and the TEMP
Device is arranged in the cooling chamber, and the temperature sensor is arranged at the top of the evaporator；
The temperature sensor is configured to detect the defrost temperature；And
Second preset temperature value is 3.6 DEG C to 4.4 DEG C；
First preset temperature value is 6.6 DEG C to 7.4 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517945.4A CN107255387B (en) | 2017-06-29 | 2017-06-29 | defrosting method for refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710517945.4A CN107255387B (en) | 2017-06-29 | 2017-06-29 | defrosting method for refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107255387A true CN107255387A (en) | 2017-10-17 |
| CN107255387B CN107255387B (en) | 2019-12-06 |
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ID=60024397
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710517945.4A Active CN107255387B (en) | 2017-06-29 | 2017-06-29 | defrosting method for refrigerator |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11691800B2 (en) * | 2019-05-16 | 2023-07-04 | Thaddeus Medical Systems, Inc. | Transportable active cooling container |
| WO2024093781A1 (en) * | 2022-10-31 | 2024-05-10 | 青岛海尔电冰箱有限公司 | Defrosting heating device for refrigerator, and refrigerator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002107047A (en) * | 2000-09-29 | 2002-04-10 | Sanyo Electric Co Ltd | Refrigerator |
| CN2921730Y (en) * | 2005-11-30 | 2007-07-11 | 东莞市广大制冷有限公司 | Evaporator with defrosting device |
| CN104344644A (en) * | 2013-07-30 | 2015-02-11 | 海尔集团公司 | Refrigerator with defrosting structure and defrosting method |
-
2017
- 2017-06-29 CN CN201710517945.4A patent/CN107255387B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002107047A (en) * | 2000-09-29 | 2002-04-10 | Sanyo Electric Co Ltd | Refrigerator |
| CN2921730Y (en) * | 2005-11-30 | 2007-07-11 | 东莞市广大制冷有限公司 | Evaporator with defrosting device |
| CN104344644A (en) * | 2013-07-30 | 2015-02-11 | 海尔集团公司 | Refrigerator with defrosting structure and defrosting method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11691800B2 (en) * | 2019-05-16 | 2023-07-04 | Thaddeus Medical Systems, Inc. | Transportable active cooling container |
| WO2024093781A1 (en) * | 2022-10-31 | 2024-05-10 | 青岛海尔电冰箱有限公司 | Defrosting heating device for refrigerator, and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107255387B (en) | 2019-12-06 |
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