CN105890269A - Circulating defrosting system, refrigerator and defrosting method - Google Patents
Circulating defrosting system, refrigerator and defrosting method Download PDFInfo
- Publication number
- CN105890269A CN105890269A CN201610240973.1A CN201610240973A CN105890269A CN 105890269 A CN105890269 A CN 105890269A CN 201610240973 A CN201610240973 A CN 201610240973A CN 105890269 A CN105890269 A CN 105890269A
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- China
- Prior art keywords
- heat
- defrost
- thermophore
- compressor
- outlet
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Classifications
-
- 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
- F25D21/12—Removing frost by hot-fluid circulating system separate from the refrigerant system
-
- 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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/141—Removal by evaporation
- F25D2321/1411—Removal by evaporation using compressor heat
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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)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Defrosting Systems (AREA)
Abstract
The invention discloses a circulating defrosting system which comprises a compressor, an evaporator, a condenser, a heat accumulator and a defrosting circulating pipeline. An inlet of the compressor is connected with an outlet of the evaporator. An inlet of the evaporator is connected with an outlet of the condenser through a capillary pipe. An inlet of the condenser is connected with a heat accumulating outlet of the heat accumulator. A heat accumulating inlet of the heat accumulator is connected with an outlet of the compressor. A heat releasing inlet of the heat accumulator is connected with an outlet of the defrosting circulating pipeline. A heat releasing outlet of the heat accumulator is connected with an inlet of the defrosting circulating pipeline. A water pump is arranged on a pipeline connecting the defrosting circulating pipeline and the heat releasing outlet. A normally-closed valve is arranged on a pipeline connecting the defrosting circulating pipeline and the heat releasing inlet. The defrosting circulating pipeline is attached to the outer side of a pipeline of the evaporator. The invention further provides a refrigerator and a defrosting method. By means of the circulating defrosting system, the refrigerator and the defrosting method, defrosting energy consumption can be lowered, defrosting time is short, and the influence on the temperature fluctuation of refrigerator chambers during defrosting is small.
Description
Technical field
The present invention relates to refrigerator defrost field, particularly relate to a kind of circulation defrosting system, refrigerator
And defrosting method.
Background technology
It is reported, major part steam is from air, and people deposit food when opening refrigerator, room
Gas free exchange in interior air and refrigerator, indoor humid air enters in refrigerator stealthily.Also
Some steam is from the food deposited in refrigerator, and the veterinary antibiotics as cleaned up is placed on
In crisper, the moisture evaporation in the food such as vegetable, meet cold after condense into frost.
As it is shown in figure 1, existing electrical heating defroster 9 heats outside vaporizer 5, pass through spoke
Penetrating and free convection, frost layer melted, efficiency is low, consumes electric energy excessive, and often has
The situation that frost layer does not come off, the defrost time is long, during defrost between fluctuations in indoor temperature impact
Bigger.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is how to provide that a kind of defrost energy consumption is low, the defrost time
Circulation defrosting system little to the temperature fluctuations affect of refrigerator compartment during short, defrost.
(2) technical scheme
In order to solve above-mentioned technical problem, first aspect, the present invention provides a kind of circulation defrost system
System, it includes compressor, vaporizer, condenser, thermophore and defrost circulation line, described
The entrance of compressor is connected with the outlet of described vaporizer, and the entrance of described vaporizer passes through capillary
Pipe is connected with the outlet of described condenser, the entrance of described condenser and the accumulation of heat of described thermophore
Outlet connects, and the accumulation of heat entrance of described thermophore is connected with the outlet of described compressor, described storage
The heat release entrance of hot device is connected with the outlet of described defrost circulation line, the heat release of described thermophore
Outlet is connected with the entrance of described defrost circulation line, described defrost circulation line and described heat release
The pipeline that outlet connects is provided with water pump, and described defrost circulation line is connected with described heat release entrance
Pipeline be provided with normally close valve, described defrost circulation line is attached at outside the pipeline of described vaporizer
Side.
Specifically, described thermophore includes thermophore housing, sets respectively in described thermophore housing
Aerofluxus regenerative heat exchanger and defrost heat exchanger, described aerofluxus regenerative heat exchanger is had to be provided with described accumulation of heat
Entrance and accumulation of heat outlet, described defrost heat exchanger is provided with described heat release entrance and heat release outlet.
Wherein, phase change heat storage material, described thermophore housing it are filled with in described thermophore housing
Inwall be provided with heat-insulation layer.
Preferably, described phase change heat storage material is mineral wax mixture.
Wherein, described defrost circulation line is provided with anti-icing fluid.
Further, described anti-icing fluid can be glycol water.
Preferably, described normally close valve is electromagnetic valve.
It addition, this system also includes that described evaporation is located at by sensor and controller, described sensor
On device, described normally close valve, sensor and compressor are all connected with described controller.
Second aspect, present invention also offers a kind of refrigerator, and it is provided with such as technique scheme institute
The circulation defrosting system stated.
The third aspect, present invention also offers the defrosting method of a kind of described refrigerator, it include as
Lower step:
S1, refrigerator start shooting during utilize thermophore collect compressor exhaust gas heat；
S2, when needs defrost, close compressor, open normally close valve and water pump, water pump is from storage
In hot device, liquid pumping after extraction heating is in defrost circulation line fit with vaporizer, general
Frost layer is melted；
Liquid after S3, cooling returns in thermophore and heats, and is again pumped into and steams after heating
Send out defrost in the defrost circulation line of device laminating；
S4, by this circulation until the frost layer on vaporizer is melted completely；
S5, closedown normally close valve and water pump, compressor is opened, and recovers the approach of normal refrigeration, and
And thermophore is again by the exhaust gas collection heat of compressor.
(3) beneficial effect
Compared with prior art, the invention have the advantages that
A kind of circulation defrosting system, refrigerator and defrosting method, the wherein circulation that the present invention provides
Defrosting system, by using technique scheme, when carrying out refrigeration work, is collected by thermophore
The exhaust gas heat of compressor, needs defrost when, compressor shutdown, normally close valve and water pump
Open, water pump from thermophore the liquid pumping of extracting high-temperature to the change fitted tightly with vaporizer
Transferring heat to frost layer in frost circulation line makes frost layer melt, from vaporizer Low Temperature Liquid out
Body returns in thermophore and heats, and is again pumped into the pipeline fitted tightly with vaporizer after heating
Middle defrost, by this circulation until frost layer is melted completely, then closes normally close valve and water pump, compression
Machine is opened, and recover to freeze normally approach, and now thermophore is because through defrost, and temperature reduces,
Again by the exhaust gas collection heat of compressor；Defrosting system defrost energy consumption is low, the defrost time is short for this,
And it is little to the temperature fluctuations affect of refrigerator compartment during defrost.
Accompanying drawing explanation
Fig. 1 is the defrosting system simplified schematic diagram of prior art；
Fig. 2 is a kind of annexation schematic diagram circulating defrosting system of the present invention；
Fig. 3 is the structural representation of the thermophore in a kind of defrosting system of the present invention；
Fig. 4 is that the vaporizer in a kind of defrosting system of the present invention is just being fitted with defrost circulation line
Face structural representation；
Fig. 5 is the side schematic view of Fig. 4；
In figure: 1: compressor；2: thermophore；3: condenser；4: capillary tube；5: steam
Send out device；51: evaporator pipeline；52: radiating fin；6: normally close valve；7: water pump；8:
Defrost circulation line；9: electrical heating defroster；A: aerofluxus regenerative heat exchanger；B: defrost is changed
Hot device；C: phase change heat storage material；D: heat-insulation layer；E: heat release entrance；F: heat release exports；
G: accumulation of heat entrance；H: accumulation of heat exports.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, the detailed description of the invention of the present invention is made the most in detail
Describe.Following instance is used for illustrating the present invention, but is not limited to the scope of the present invention.
In describing the invention, " " center ", " longitudinally ", " horizontal it should be noted that term
To ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ",
Orientation or the position relationship of the instruction such as " end " " interior ", " outward " are based on orientation shown in the drawings
Or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that device or the element of indication must have specific orientation, with specific azimuth configuration and behaviour
Make, be therefore not considered as limiting the invention.Additionally, term " first ", " second ",
" the 3rd " etc. are only used for describing purpose, and it is not intended that indicate or hint relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited,
Term " is installed ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixing even
Connect, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected, it is also possible to
It it is electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can concrete feelings
Condition understands above-mentioned term concrete meaning in the present invention.
Additionally, in describing the invention, except as otherwise noted, " multiple ", " many ", " many
Group " it is meant that two or more.
As in figure 2 it is shown, a kind of circulation defrosting system provided for the present invention, it includes compressor
1, vaporizer 5, condenser 3, thermophore 2 and defrost circulation line 8, described vaporizer 5
Including the evaporator pipeline 51 of roundabout setting and be located at the radiating fin on evaporator pipeline 51
52, the entrance of described compressor 1 is connected with the outlet of described vaporizer 5, described compressor 1
For sucking the refrigerant gas of low-temp low-pressure, by discharging the cold-producing medium of High Temperature High Pressure after compression
Gas, provides power for kind of refrigeration cycle, and the entrance of described vaporizer 5 passes through capillary tube 4 and institute
The outlet stating condenser 3 connects, and capillary tube 4 is typically made up of copper tube, length 1～6m,
Internal diameter is 0.5～2mm, it can be made to meet different operating modes by the multiple combination of length and caliber
With the refrigerant system requirement of different refrigerating capacitys, the entrance of described condenser 3 and described thermophore
The accumulation of heat outlet H of 2 connects, the accumulation of heat entrance G of described thermophore 2 and described compressor 1
Outlet connect, the heat release entrance E of described thermophore 2 and going out of described defrost circulation line 8
Mouth connects, and the heat release outlet F of described thermophore 2 is with the entrance of described defrost circulation line 8 even
Connecing, in described defrost circulation line 8, circulation has anti-icing fluid, can be specifically the second of certain proportioning
Two alcohol-water solution (or other do not solidify and the preferable liquid of mobility in low temperature condition), described
The pipeline that defrost circulation line 8 is connected with described heat release outlet F is provided with water pump 7, describedization
The pipeline that frost circulation line 8 is connected with described heat release entrance E is provided with normally close valve 6, such as Fig. 4
Shown in Fig. 5, described defrost circulation line 8 is attached at outside described evaporator pipeline 51,
Specifically, the outside that defrost circulation line 8 moves towards along evaporator pipeline 51 fits tightly,
Defrost circulation line 8 can be metal tubes, welds with evaporator pipeline 51, it is also possible to be
Flexible pipe, uses buckle to buckle with evaporator pipeline 51.When carrying out refrigeration work, by storing
The exhaust gas heat of compressor 1 collected by hot device 2, and needs defrost when, compressor 1 is shut down,
Normally close valve 6 and water pump 7 are opened, water pump 7 from thermophore 2 liquid of extracting high-temperature (such as second
Two alcohol-water solution) it is pumped in the defrost circulation line 8 fitted tightly with vaporizer, then pass through
Frost layer is melted by radiating fin 52 heat conduction, returns accumulation of heat from vaporizer cryogenic liquid out
Device 2 heats, is again pumped into defrost in the pipeline fitted tightly with vaporizer after heating, presses
This circulation is until frost layer is melted completely, then normally close valve 6 and water pump 7 is closed, compressor 1 dozen
Opening, recover to freeze normally approach, and now thermophore 2 is because through defrost, and temperature reduces,
Again by the exhaust gas collection heat of compressor 1；This defrosting system defrost energy consumption is low, the defrost time
During short and defrost little to the temperature fluctuations affect of refrigerator compartment.Outside traditional vaporizer
Electrical heating defrost is compared, and defrost energy consumption can save more than 50%.
As it is shown on figure 3, specifically, described thermophore 2 specifically can include thermophore housing, institute
The inwall stating thermophore housing is provided with heat-insulation layer D, is respectively equipped with aerofluxus in described thermophore housing
Regenerative heat exchanger A and defrost heat exchanger B, is filled with phase-transition heat-storage material in described thermophore housing
Material C such as mineral wax mixture, naturally it is also possible to for other heat-storing materials, to play heat transfer, to be incubated
Effect；Described aerofluxus regenerative heat exchanger A is provided with described accumulation of heat entrance G and accumulation of heat outlet H, described
Defrost heat exchanger B is provided with described heat release entrance E and heat release outlet F；Described aerofluxus regenerative heat exchanger
A and defrost heat exchanger B can be arranged with relative spacing, it is also possible to be close together setting, it is preferable that
Described accumulation of heat entrance G and accumulation of heat outlet H is positioned at the side of thermophore housing, described heat release entrance E
It is positioned at the opposite side that thermophore housing is relative with heat release outlet F.The shape of aerofluxus regenerative heat exchanger A
Formula and size, the form of defrost heat exchanger B and size, the phase transition temperature of phase change heat storage material C
And the thickness of loading, heat-insulation layer D is accurately to be counted by the defrost demand of different refrigerators
Calculate.The phase change heat storage material C of certain phase transition temperature certain mass is filled in the gap of thermophore 2,
Phase change heat storage material C is filled in whole thermophore housing, aerofluxus regenerative heat exchanger A and defrost
Heat exchanger B is to be completely immersed in equipped with in the heat-insulation layer D of phase change heat storage material C.Compressor 1 aerofluxus
Thermophore 2, high-temperature exhaust air heating phase transformation is entered by the heat exchange entrance of aerofluxus regenerative heat exchanger A
Heat-storing material C, because the latent heat of phase change of phase-change material and the sensible heat of self can absorb substantial amounts of
Compressor 1 exhaust gas heat, heat-insulation layer D plays insulation effect, thus is stored in thermophore 2.
When cold cycle liquid after defrost terminates flows to defrost heat exchanger B by heat release entrance E,
The heat of storage is conducted to cold cycle by the high-temperature phase change heat accumulation material C in now thermophore 2
Liquid, heats cold cycle liquid, more closely pastes with vaporizer through heat release outlet F entrance
The defrost circulation line 8 closed is given vaporizer defrost.
For the ease of automatically controlling, it is preferable that described normally close valve 6 is electromagnetic valve.
It addition, this system also includes that described evaporation is located at by sensor and controller, described sensor
On device, described normally close valve 6, sensor and compressor 1 are all connected with described controller, described biography
For sensing, whether sensor has whether frost layer and frost layer melt；When judging that frost layer is complete by sensor
After full thawing, water pump 7 and normally close valve 6 are closed, and recover to freeze normally approach, now thermophore
2 because through defrost, and temperature reduces, then by the exhaust gas collection heat of compressor 1.
Second aspect, present invention also offers a kind of refrigerator, is specifically as follows wind cooling refrigerator, its
It is provided with the circulation defrosting system as described in technique scheme.
The third aspect, present invention also offers the defrosting method of a kind of described refrigerator, it include as
Lower step:
S1, refrigerator start shooting during utilize thermophore 2 to collect the exhaust gas heat of compressor 1；
S2, when needs defrost, close compressor 1, open normally close valve 6 and water pump 7, water pump 7
From thermophore 2, the liquid pumping after extraction heating is to the defrost circulation line fitted with vaporizer
In 8, frost layer is melted；
S3, cooling after liquid return in thermophore 2 heat, be again pumped into after heating with
Defrost in the defrost circulation line 8 of vaporizer laminating；
S4, by this circulation until the frost layer on vaporizer is melted completely；
S5, closedown normally close valve 6 and water pump 7, compressor 1 is opened, and recovers the approach of normal refrigeration,
And thermophore 2 is again by the exhaust gas collection heat of compressor 1.
As can be seen from the above embodiments, the present invention significantly reduces defrost energy consumption；The defrost time
Short, during defrost, the temperature fluctuations affect to refrigerator compartment is little.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention,
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made,
Should be included within the scope of the present invention.
Claims (10)
1. a circulation defrosting system, it is characterised in that include compressor, vaporizer, cold
Condenser, thermophore and defrost circulation line, the entrance of described compressor goes out with described vaporizer
Mouth connects, and the entrance of described vaporizer is connected with the outlet of described condenser by capillary tube, institute
The accumulation of heat of the entrance and described thermophore of stating condenser exports and is connected, and the accumulation of heat of described thermophore enters
Mouth is connected with the outlet of described compressor, and the heat release entrance of described thermophore circulates with described defrost
The outlet of pipeline connects, the heat release outlet of described thermophore and the entrance of described defrost circulation line
Connecting, the pipeline that described defrost circulation line is connected with described heat release outlet is provided with water pump, institute
State the pipeline that defrost circulation line is connected with described heat release entrance and be provided with normally close valve, described defrost
Circulation line is attached at outside the pipeline of described vaporizer.
Circulation defrosting system the most according to claim 1, it is characterised in that described accumulation of heat
Device includes thermophore housing, is respectively equipped with aerofluxus regenerative heat exchanger and change in described thermophore housing
Frost heat exchanger, described aerofluxus regenerative heat exchanger is provided with described accumulation of heat entrance and accumulation of heat outlet, described
Defrost heat exchanger is provided with described heat release entrance and heat release outlet.
Circulation defrosting system the most according to claim 2, it is characterised in that described accumulation of heat
Being filled with phase change heat storage material in device housing, the inwall of described thermophore housing is provided with heat-insulation layer.
Circulation defrosting system the most according to claim 3, it is characterised in that described phase transformation
Heat-storing material is mineral wax mixture.
Circulation defrosting system the most according to claim 1, it is characterised in that described defrost
Circulation line is provided with anti-icing fluid.
Circulation defrosting system the most according to claim 5, it is characterised in that described antifreeze
Liquid is glycol water.
Circulation defrosting system the most according to claim 1, it is characterised in that described normally closed
Valve is electromagnetic valve.
Circulation defrosting system the most according to claim 1, it is characterised in that also include passing
Sensor and controller, described sensor is located on described vaporizer, described normally close valve, sensor
All it is connected with described controller with compressor.
9. a refrigerator, it is characterised in that be provided with following as described in any one of claim 1-8
Cyclisation defrosting system.
10. the defrosting method of a refrigerator as claimed in claim 9, it is characterised in that include
Following steps:
S1, refrigerator start shooting during utilize thermophore collect compressor exhaust gas heat；
S2, when needs defrost, close compressor, open normally close valve and water pump, water pump is from storage
In hot device, liquid pumping after extraction heating is in defrost circulation line fit with vaporizer, general
Frost layer is melted；
Liquid after S3, cooling returns in thermophore and heats, and is again pumped into and steams after heating
Send out defrost in the defrost circulation line of device laminating；
S4, by this circulation until the frost layer on vaporizer is melted completely；
S5, closedown normally close valve and water pump, compressor is opened, and recovers the approach of normal refrigeration, and
And thermophore is again by the exhaust gas collection heat of compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240973.1A CN105890269A (en) | 2016-04-15 | 2016-04-15 | Circulating defrosting system, refrigerator and defrosting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240973.1A CN105890269A (en) | 2016-04-15 | 2016-04-15 | Circulating defrosting system, refrigerator and defrosting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105890269A true CN105890269A (en) | 2016-08-24 |
Family
ID=56705142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610240973.1A Pending CN105890269A (en) | 2016-04-15 | 2016-04-15 | Circulating defrosting system, refrigerator and defrosting method |
Country Status (1)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766579A (en) * | 2016-11-21 | 2017-05-31 | 青岛海尔股份有限公司 | Evaporator for refrigerator soaks de-icing method |
| CN108088155A (en) * | 2017-12-07 | 2018-05-29 | 合肥华凌股份有限公司 | Refrigerator |
| CN108375266A (en) * | 2018-02-26 | 2018-08-07 | 合肥美的电冰箱有限公司 | A kind of defrosting system of refrigerator and refrigerator |
| CN109764609A (en) * | 2018-12-28 | 2019-05-17 | 青岛海尔股份有限公司 | Refrigerator and its defrosting control method |
| CN109900047A (en) * | 2019-02-18 | 2019-06-18 | 北京工业大学 | Wind cooling refrigerator |
| CN110173945A (en) * | 2019-05-07 | 2019-08-27 | 湖北美的电冰箱有限公司 | Refrigeration equipment |
| CN112696861A (en) * | 2019-10-23 | 2021-04-23 | 博西华电器（江苏）有限公司 | Refrigerator waste heat collecting system, refrigerator defrosting system and refrigerator condensation preventing system |
| CN113945050A (en) * | 2021-10-13 | 2022-01-18 | 珠海格力电器股份有限公司 | Defrosting system and control method of refrigerator and refrigerator |
| CN114061176A (en) * | 2020-07-31 | 2022-02-18 | 上海海立电器有限公司 | Refrigeration system and defrosting control method thereof |
| CN114704981A (en) * | 2022-04-29 | 2022-07-05 | 青岛海容商用冷链股份有限公司 | Defrosting system and defrosting method of refrigeration appliance |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766579B (en) * | 2016-11-21 | 2019-08-02 | 青岛海尔股份有限公司 | Evaporator for refrigerator impregnates de-icing method |
| CN106766579A (en) * | 2016-11-21 | 2017-05-31 | 青岛海尔股份有限公司 | Evaporator for refrigerator soaks de-icing method |
| CN108088155A (en) * | 2017-12-07 | 2018-05-29 | 合肥华凌股份有限公司 | Refrigerator |
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| CN109900047A (en) * | 2019-02-18 | 2019-06-18 | 北京工业大学 | Wind cooling refrigerator |
| CN110173945A (en) * | 2019-05-07 | 2019-08-27 | 湖北美的电冰箱有限公司 | Refrigeration equipment |
| CN112696861A (en) * | 2019-10-23 | 2021-04-23 | 博西华电器（江苏）有限公司 | Refrigerator waste heat collecting system, refrigerator defrosting system and refrigerator condensation preventing system |
| CN114061176A (en) * | 2020-07-31 | 2022-02-18 | 上海海立电器有限公司 | Refrigeration system and defrosting control method thereof |
| CN113945050A (en) * | 2021-10-13 | 2022-01-18 | 珠海格力电器股份有限公司 | Defrosting system and control method of refrigerator and refrigerator |
| CN114704981A (en) * | 2022-04-29 | 2022-07-05 | 青岛海容商用冷链股份有限公司 | Defrosting system and defrosting method of refrigeration appliance |
| CN114704981B (en) * | 2022-04-29 | 2024-10-11 | 青岛海容商用冷链股份有限公司 | Defrosting system and defrosting method of refrigeration appliance |
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