CN115164484A - Defrosting structure, refrigerator and defrosting control method - Google Patents
Defrosting structure, refrigerator and defrosting control method Download PDFInfo
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- CN115164484A CN115164484A CN202210877016.5A CN202210877016A CN115164484A CN 115164484 A CN115164484 A CN 115164484A CN 202210877016 A CN202210877016 A CN 202210877016A CN 115164484 A CN115164484 A CN 115164484A
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- 238000010257 thawing Methods 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 152
- 238000007664 blowing Methods 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003570 air Substances 0.000 description 185
- 238000007710 freezing Methods 0.000 description 9
- 230000008014 freezing Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 238000005485 electric heating Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D21/04—Preventing the formation of frost or condensate
-
- 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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- 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
- F25D21/125—Removing frost by hot-fluid circulating system separate from the refrigerant system the hot fluid being ambient air
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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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 defrosting structure, a refrigerator and a defrosting control method, relates to the technical field of refrigerators, and solves the technical problems of low defrosting efficiency and long defrosting time of the defrosting structure in the refrigerator. The defrosting structure comprises an air supply assembly and a first heating device, wherein an air outlet of the air supply assembly is arranged towards the evaporator and is used for blowing air of the external environment to the evaporator; the first heating device is positioned outside the air supply assembly, arranged between an air outlet of the air supply assembly and the evaporator and used for heating air flow blown to the evaporator and drying wet air around the evaporator. The refrigerator defrosting device is used for defrosting of the refrigerator, high-temperature and high-speed convection air can be formed, hot air directly blows to the evaporator and penetrates through the evaporator, the surface of the evaporator can be defrosted, and defrosting efficiency is improved; and the humid air that forms around it in the evaporimeter defrosting process can further be dried by first heating device, prevents that humid air from frosting again, can effectively shorten the time of defrosting.
Description
Technical Field
The invention relates to the technical field of refrigerators, in particular to a defrosting structure, a refrigerator and a defrosting control method.
Background
Along with the popularization of refrigerator in the life, the fresh-keeping level and the quality of life of kitchen food can obviously be improved to the refrigerator, the fresh-keeping time of food and the fresh-keeping state of eating the material have greatly been promoted in recent years's appearance of forced air cooling refrigerator, because the particularity of forced air cooling refrigerator's theory of operation, the refrigerant evaporates when the evaporimeter heat absorption, there is the frosting phenomenon of different degrees on the evaporimeter surface, if not in time carry out the defrosting and handle, the thickness on the frost layer on evaporimeter surface can increase gradually, the refrigerating output reduces, lead to the work efficiency of refrigerator to step down. Therefore, the air-cooled refrigerator needs defrosting.
In the prior art, the defrosting mode adopted by the air cooling refrigerator is to utilize an electric heater to defrost. The refrigerator comprises a heater, the heater is generally an electric heating pipe, the electric heating pipe is positioned below the evaporator, the electric heating pipe rapidly releases heat due to the heat effect of a resistor after being electrified, and air is heated by the electric heating pipe to form natural heat convection to defrost the evaporator.
The applicant has found that the prior art has at least the following technical problems:
on the one hand, the heater is located the evaporimeter below, and the hot-air is by natural rising behind the heater heating to frost layer on the evaporimeter heats, and above-mentioned structure defrosting is inefficient, and the heat time is long, leads to freezing room, cold-stored room temperature variation grow between, is unfavorable for the fresh-keeping of food.
On the other hand, during defrosting, partial water vapor and water are generated and remain in the refrigerating chamber due to the influence of hot air of heat convection, damp and hot air cannot be discharged in time, and a frosting phenomenon is generated during the next stage of refrigerating work, so that the defrosting effect is poor.
Disclosure of Invention
The invention aims to provide a defrosting structure, a refrigerator and a defrosting control method, and aims to solve the technical problems that in the prior art, the defrosting structure in the refrigerator is low in defrosting efficiency and long in defrosting time. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a defrosting structure, which comprises an air supply assembly and a first heating device, wherein:
an air outlet of the air supply assembly faces the evaporator and is used for blowing air of the external environment to the evaporator; the first heating device is positioned outside the air supply assembly, arranged between an air outlet of the air supply assembly and the evaporator and used for heating air flow blowing to the evaporator and drying wet air around the evaporator.
Preferably, the air outlet of the air supply assembly is located above the evaporator, or the air outlet of the air supply assembly is located beside the evaporator, and the first heating device is close to one side of the evaporator.
Preferably, the first heating means includes two or more heating portions arranged in a width direction of the evaporator, and/or the heating portions are arranged in a length direction of the evaporator.
Preferably, the air supply assembly includes a first fan, an air delivery pipe and an air outlet pipe assembly, wherein:
the first fan is communicated with the air conveying pipe and used for introducing air of an external environment into the air conveying pipe, a communicated state or a blocked state is arranged between the air inlet of the air outlet pipe assembly and the air conveying pipe, and the air outlet of the air outlet pipe assembly faces the evaporator.
Preferably, the air outlet pipe assembly comprises an air outlet pipe, an air outlet is formed in the air outlet pipe, and the air outlet is formed in the air outlet pipe and is uniformly arranged at intervals.
Preferably, all the air outlet pipes are communicated, and the air outlet pipes are arranged along the width direction of the evaporator, or the air outlet pipes are arranged along the length direction of the evaporator.
Preferably, the defrosting structure comprises a second heating device, and the second heating device is located below the evaporator or beside the evaporator.
Preferably, the defrosting structure further comprises:
a detection unit for detecting the thickness of the frost layer on the surface of the evaporator;
and the control unit is electrically connected with the detection unit, the first heating device and the second heating device and is used for controlling the first heating device to work independently or controlling the first heating device and the second heating device to work simultaneously according to the frost layer thickness information detected by the detection unit.
Preferably, the defrosting structure still includes drainage pipeline and second fan, drainage pipeline is located the below of evaporimeter, drainage pipeline's export and the outside intercommunication of evaporimeter room, the second fan set up in the air-out side of evaporimeter is used for making the process moist hot air of evaporimeter blows to drainage pipeline.
The invention also provides a refrigerator which comprises the evaporator and the defrosting structure.
The invention also provides a defrosting control method based on the refrigerator, wherein the defrosting structure comprises a second heating device, and the second heating device is positioned below the evaporator or beside the evaporator; the control method comprises the following steps:
acquiring frost layer thickness information of the surface of the evaporator;
in the defrosting mode, the air supply assembly is controlled to be communicated with an evaporator chamber, and the first heating device is controlled to work alone or the first heating device and the second heating device are controlled to work simultaneously according to the thickness of a frost layer on the surface of the evaporator.
Preferably, the obtaining of the frost layer thickness of the evaporator surface comprises:
the thickness of the frost layer on the upper part of the evaporator and the thickness of the frost layer on the lower part of the evaporator were obtained, and the average of the two was calculated.
Preferably, said controlling the first heating device to operate alone or controlling the first heating device and the second heating device to operate simultaneously according to the thickness of the frost layer on the surface of the evaporator comprises:
if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is greater than or equal to a first preset thickness value and smaller than a second preset thickness value, controlling the first heating device to work independently;
and if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is larger than or equal to a second preset thickness value, controlling the first heating device and the second heating device to work simultaneously.
Preferably, the air supply assembly includes a first fan for introducing air of an external environment into the air supply assembly; the defrosting structure further includes a second fan for discharging the hot humid air passing through the evaporator out of the evaporator chamber;
the controlling the first heating device to work alone or the first heating device and the second heating device to work simultaneously according to the thickness of the frost layer on the surface of the evaporator further comprises:
if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is less than or equal to a third preset thickness value, controlling the first fan and the second fan to run at a first preset speed;
if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is larger than a third preset thickness value, controlling the first fan and the second fan to run at a second preset speed;
wherein: the second preset speed is higher than the first preset speed, and the third preset thickness value is higher than the second preset thickness value.
Preferably, the control method further includes:
acquiring the temperature in the evaporator chamber;
and when the temperature in the evaporator chamber is greater than or equal to the set temperature, controlling the first heating device and the second heating device to stop working, and controlling the first fan and the second fan to continue to run at the original rotating speed for a second preset time and then stop working.
Preferably, in the defrosting mode, the air supply assembly is communicated with an evaporator chamber, and the defrosting mode includes:
and when the refrigerating operation time of the refrigerator is longer than a first set time and the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is longer than the first preset thickness value, controlling the refrigerator to enter the defrosting mode.
Compared with the prior art, the defrosting structure, the refrigerator and the defrosting control method provided by the invention have the following beneficial effects: according to the defrosting structure, the air outlet of the air supply assembly faces the evaporator, the first heating device is positioned outside the air supply assembly and is arranged between the air outlet of the air supply assembly and the evaporator, so that dry air in the external environment can be introduced into the evaporator chamber, high-temperature and high-speed convection air is formed, hot air is directly blown to the evaporator and penetrates through the evaporator, the surface of the evaporator can be defrosted, and the defrosting efficiency is improved; and the humid air that the evaporimeter defrosting in-process formed around it can further be by the outside heating device drying of air supply assembly, prevents that humid air from frosting again, can effectively shorten the time of defrosting, prevents that the temperature fluctuation in freezer, the freezer is big. The refrigerator has the defrosting structure, so that the refrigerator also has the advantages of improving defrosting efficiency, increasing the indoor drying degree of the evaporator and prolonging the frosting time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a side sectional view of a refrigerator having the defrosting structure;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a partial front sectional view of a refrigerator having the defrosting structure;
FIG. 4 is a schematic structural view of an air outlet pipe assembly;
FIG. 5 is a schematic view of the first heating means;
FIG. 6 is a schematic flow chart of a defrosting control method;
fig. 7 is a flow chart of an embodiment of a defrosting control method.
In the figure 11, an air delivery pipe; 12. an air outlet pipe assembly; 121. an air outlet pipe; 122. an air outlet; 123. an air inlet; 13. a first fan; 2. a first heating device; 3. a second heating device; 4. a drainage conduit; 5. a first valve; 6. a frost layer thickness sensor; 7. a second valve; 8. a second fan; 100. an evaporator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the equipment or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The embodiment of the invention provides a defrosting structure, a refrigerator and a defrosting control method, which can form high-temperature and high-speed convection air to defrost the surface of an evaporator and improve defrosting efficiency; the wet air is prevented from frosting again, the defrosting time can be effectively shortened, and the temperature fluctuation in the freezing chamber and the refrigerating chamber is prevented from being large.
The technical solution provided by the present invention is explained in more detail below with reference to fig. 1 to 7.
Example one
As shown in fig. 1 to 5, the present embodiment provides a defrosting structure including an air blowing assembly and a first heating device 2, wherein: the air outlet 122 of the air supply assembly is disposed toward the evaporator 100, and is used for blowing air of the external environment to the evaporator 100; the first heating device 2 is located outside the air supply assembly, and is disposed between the air outlet 122 of the air supply assembly and the evaporator 100, for heating the air flow blowing to the evaporator 100 and drying the wet air around the evaporator 100.
The defrosting structure can be applied to a refrigerator to defrost the evaporator 100 in the refrigerator.
In the defrosting structure of the embodiment, because the air outlet 122 of the air supply assembly is arranged towards the evaporator 100, and the first heating device 2 is located outside the air supply assembly and is arranged between the air outlet 122 of the air supply assembly and the evaporator 100, dry air of an external environment can be introduced into the evaporator chamber, high-temperature and high-speed convection air is formed, hot air is directly blown to the evaporator 100 and passes through the evaporator 100, the surface of the evaporator 100 can be defrosted, and the defrosting efficiency is improved; and the humid air that forms around it in the defrosting process of evaporator 100 can further be by the outside first heating device 2 drying of air supply assembly, prevents that humid air from frosting again, can effectively shorten the time of defrosting, prevents that the temperature fluctuation in freezer, freezer is big.
As an optional implementation manner, in this embodiment, the air outlet 122 of the air supply assembly is located above the evaporator 100, or the air outlet 122 of the air supply assembly is located beside the evaporator 100, and the first heating device 2 is located between the air outlet 122 of the air supply assembly and the evaporator 100 and is disposed near one side of the evaporator 100.
Referring to fig. 1-3, preferably, the air outlet 122 of the air supply assembly is located above the evaporator 100, the first heating device 2 is located above the evaporator 100, the air supply assembly guides the dry air in the external environment to the upper side of the first heating device 2, the dry air is heated by the first heating device 2 to form a hot air flow with a high temperature, and the hot air flow passes through the evaporator 100 from top to bottom, so as to defrost the surface of the evaporator 100. Compared to the prior art in which the heater is disposed below the evaporator 100, the present embodiment can improve defrosting efficiency using strong convection of hot air.
During defrosting of the frost layer on the surface of the evaporator 100, moisture is formed. When the first heating device 2 is located above the evaporator 100, and between the air outlet 122 of the air supply assembly and the evaporator 100 and close to one side of the evaporator 100, the water vapor rises and meets the first heating device 2, and can be further dried by the first heating device 2, so that the damp and hot air in the evaporator chamber is reduced, the dryness degree in the evaporator chamber is improved, the defrosting effect is improved, and the frost is prevented from forming again.
Therefore, the first heating device 2 can dry the humid air around the evaporator 100 in addition to heating the air flow blown to the evaporator 100.
As an alternative embodiment, referring to fig. 5, the first heating device 2 includes two or more heating portions, the heating portions being arranged in a width direction of the evaporator 100, and/or the heating portions being arranged in a length direction of the evaporator 100.
The heating part can be a heating pipe, a heating rod and the like, and a steel pipe heater can be adopted. The heating parts have two or more, and when the first heating means 2 is located at the side of the evaporator 100, the heating parts are uniformly arranged in the length direction of the evaporator 100. As shown in fig. 1 and 2, when the first heating device 2 is located above the evaporator 100, the heating portions are uniformly arranged in the width direction of the evaporator 100, and all the heating portions completely cover the top side of the evaporator 100. The above arrangement of the heating part can increase the contact area with the air flow blowing to the evaporator 100, and effectively and uniformly heat the air blowing to the evaporator 100, thereby improving the heating efficiency.
As an alternative embodiment, referring to fig. 1 to 3, the air supply assembly of the present embodiment includes a first fan 13, an air delivery pipe 11 and an air outlet pipe assembly 12, wherein: the first fan is communicated with the air conveying pipe 11, and is used for introducing air of an external environment into the air conveying pipe 11, a communicating state or a blocking state is provided between the air inlet 123 of the air outlet pipe assembly 12 and the air conveying pipe 11, and the air outlet 122 of the air outlet pipe assembly 12 is arranged towards the evaporator 100.
When the defrosting structure is applied to a refrigerator, the first fan 13 may be installed in the compressor compartment and introduces dry air of the external environment into the air duct 11 due to a spatial limitation of the evaporator compartment, the air duct 11 further introduces the dry air into the air duct assembly 12, and the dry air is blown from the air outlet 122 of the air duct assembly 12 toward the first heating device 2 and the evaporator 100. Referring to fig. 3, the air duct 11 is provided with a first valve 5, and the first valve 5 is used for enabling the air inlet 123 of the air duct assembly and the air duct 11 to be in a communicating state or a blocking state. When the refrigerator is in a refrigeration mode, the first valve 5 is closed, the air inlet 123 of the air pipe assembly and the air conveying pipe 11 are in a blocking state, and defrosting is not performed at the moment; the refrigerator is under the mode of changing frost, and the third valve on the pipeline between evaporimeter 100 and the freezer, the fourth valve on the pipeline between evaporimeter 100 and the walk-in are closed, and first valve 5 opens this moment, is in the connected state between the air intake 123 of air-out pipe assembly 12 and the defeated tuber pipe 11, changes frost this moment.
In order to further improve the defrosting effect, as an optional implementation manner, referring to fig. 4, the air outlet pipe assembly 12 of the present embodiment includes an air outlet pipe 121, an air outlet 122 is disposed on the air outlet pipe 121, and the air outlet 122 is uniformly spaced on the air outlet pipe 121. Above-mentioned air-out pipe assembly 12's structure can make dry air current evenly blow to first heating device 2 to by the even heating after fully contacting with first heating device 2, thereby even blow to evaporimeter 100, improve and change white efficiency and change the frost effect.
During defrosting, the first fan 13 sends ambient air to the air outlet pipe assembly 12 through the air conveying pipe 11 and shunts the ambient air to the air outlet pipes 121, the dry air is uniformly blown out through the air outlets 122, at this time, the first heating device 2 starts to heat, high-flow-rate air blown out through the air outlets 122 of the air outlet pipes 121 is heated by the first heating device 2 to form high-temperature high-speed hot air flow, and the high-temperature high-speed hot air flow is uniformly blown to each part of the evaporator 100, so that the evaporator 100 is quickly defrosted by the high-temperature high-speed hot air flow.
As an alternative embodiment, referring to fig. 4, in this embodiment, all the air outlet pipes 121 are connected, and the air outlet pipes 121 are arranged along the width direction of the evaporator 100, or the air outlet pipes 121 are arranged along the length direction of the evaporator 100.
Referring to fig. 1 and 2, the air outlet 122 of the air outlet pipe assembly 12 is located above the evaporator 100, the air outlet pipes 121 are uniformly arranged along the width direction of the evaporator 100, and the air outlet pipes 121 completely cover one side of the top of the evaporator 100, so that after the dry air blown out from the air outlet pipes 121 is heated by the first heating device 2, the dry air can be uniformly and directly blown to each part of the evaporator 100, thereby improving defrosting efficiency.
In the prior art, the evaporator 100 is communicated with the freezing chamber through a pipeline, and a third valve is arranged on the pipeline between the evaporator 100 and the freezing chamber; the evaporator 100 is communicated with the refrigerating chamber through a pipeline, and a fourth valve is arranged on the pipeline between the evaporator 100 and the refrigerating chamber. The return air inlet of the evaporator 100 communicating with the freezing chamber is located below the evaporator 100, and a large amount of moisture is carried in the air during the return air, so that the lower portion of the evaporator 100 is easily frosted.
In view of the above problem, as an alternative embodiment, the defrosting structure includes the second heating device 3, and the second heating device 3 is located below the evaporator 100 or beside the evaporator 100. Referring to fig. 1-3, a second heating device 3 is located below the evaporator 100 for heating air below the evaporator 100 to facilitate the removal of a frost layer on the lower portion of the evaporator 100. The second heating device 3 may be a heating rod or a heating tube, such as an aluminum tube heater in the prior art.
As an optional embodiment, the defrosting structure further comprises: a detection unit for detecting the thickness of the frost layer on the surface of the evaporator 100; and the control unit is electrically connected with the detection unit, the first heating device 2 and the second heating device 3 and is used for controlling the first heating device 2 to work independently or controlling the first heating device 2 and the second heating device 3 to work simultaneously according to the frost layer thickness information detected by the detection unit.
Specifically, referring to fig. 3, the above-mentioned detecting unit can use a prior art frost thickness sensor 6, and the upper part and the lower part of the evaporator 100 are provided with the frost thickness sensors 6 for detecting the thickness of the frost layer on the upper part of the evaporator 100 and the thickness of the frost layer on the lower part of the evaporator 100, respectively. The frost layer thickness sensor 6 transmits the detected frost layer thickness information to the control unit, and if the frost layer is relatively thin, the control unit controls the first heating device 2 to work independently, so that the energy consumption is reduced; if the frost layer is relatively thick, the control unit controls the first heating device 2 and the second heating device 3 to work simultaneously, thereby shortening the defrosting time.
To further improve defrosting efficiency, moisture is prevented from remaining in the evaporator chamber, causing frost to form again. As an alternative embodiment, referring to fig. 1-3, the defrosting structure of the present embodiment further includes a flow guiding pipe 4 and a second fan 8, the flow guiding pipe 4 is located below the evaporator 100, an outlet of the flow guiding pipe 4 is communicated with the outside of the evaporator chamber, and the second fan 8 is disposed on the air outlet side of the evaporator 100 for blowing the hot and humid air passing through the evaporator 100 toward the flow guiding pipe 4. The second fan 8 and the drainage channel are in a communicated state and a blocked state, the second valve 7 is arranged on a pipeline between the second fan 8 and the drainage channel, and when the second valve 7 starts, the second fan 8 and the drainage channel are in a communicated state, so that defrosting is facilitated; when the second valve 7 is closed, the second fan 8 and the drainage channel are in a blocking state, and the refrigerator cools normally.
The drainage pipeline 4 can be a drainage pipeline in the refrigerator, a pipeline is not required to be additionally arranged, the drainage pipeline is used for draining water generated by defrosting, and meanwhile, under the action of the second fan 8, the drainage pipeline is also used for draining humid air, the water and the humid air are timely discharged from the evaporator chamber, closed-loop intense heat convection is formed, the humid air is prevented from remaining in the evaporator chamber, and the wet air is frosted again in the next stage of refrigeration work.
Example two
Referring to fig. 1 to 3, the present embodiment provides a refrigerator including an evaporator 100 and the above-described defrosting structure.
The refrigerator has the defrosting structure, so that the refrigerator also has the advantages of improving defrosting efficiency, increasing the indoor drying degree of the evaporator and prolonging the frosting time.
EXAMPLE III
The present embodiment provides a defrosting control method based on the above refrigerator, referring to fig. 6 and 7, the defrosting structure includes a second heating device 3, the second heating device 3 is located below the evaporator 100 or beside the evaporator 100; the control method comprises the following steps:
acquiring frost layer thickness information of the surface of the evaporator 100;
in the defrosting mode, the air supply assembly is controlled to be communicated with the evaporator chamber, and the first heating device 2 is controlled to work alone or the first heating device 2 and the second heating device 3 are controlled to work simultaneously according to the thickness of a frost layer on the surface of the evaporator 100.
According to the defrosting control method of the embodiment, the working states of the first heating device 2 and the second heating device 3 are controlled according to different thicknesses of frost layers on the surface of the evaporator 100, so that different defrosting modes are executed, quick defrosting of the evaporator 100 in the evaporator chamber is realized, and defrosting efficiency and dehumidifying effect are improved.
Specifically, referring to fig. 7, in this embodiment, a specific implementation of a defrosting control method is provided, where the control method includes:
step S101: and under the refrigeration running mode, judging whether the refrigeration running time of the refrigerator is greater than a first set time t0. When the refrigerator needs defrosting after refrigerating operation for a period of time, otherwise, a frost layer adheres to the surface of the evaporator 100, which affects the refrigerating efficiency of the refrigerator.
Step S102: if the refrigerating operation time of the refrigerator is greater than the first set time t0, the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is judged to be less than or equal to a first preset thickness value hA, and if the average value is greater than the first preset thickness value, the refrigerator is controlled to continue refrigerating operation. The first preset thickness value hA may be set according to practical situations and experience, and is not limited herein.
When the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is less than or equal to the first preset thickness value hA, it indicates that the thickness of the frost layer does not affect the refrigeration of the refrigerator, and at this time, the refrigerator can continue to perform the refrigeration without entering into the defrosting mode.
Wherein, the accessible all sets up frost layer thickness sensor 6 in evaporimeter 100 upper portion and lower part, and two frost layer thickness sensors 6 detect the frost layer thickness of evaporimeter 100 upper portion and lower part respectively to calculate the average value between them, the result that reachs is more accurate, does benefit to the accurate defrosting.
Step S103: and if the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is greater than the first preset thickness value hA, controlling the refrigerator to enter a defrosting mode.
When the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is greater than the first preset thickness value hA, the thickness of the frost layer is thick, which affects the heat exchange efficiency of the evaporator 100, and at this time, the refrigerator is controlled to enter a defrosting mode, so that the refrigerating capacity of the refrigerator is prevented from being reduced, and the working efficiency of the refrigerator is prevented from being lowered.
In the refrigerator of the embodiment, the air delivery pipe 11 is provided with a first valve 5, the first valve 5 is used for enabling the air inlet 123 of the air pipe assembly and the air delivery pipe 11 to be in a communicated state or a blocked state, a pipeline between the second fan 8 and the drainage channel is provided with a second valve 7, the evaporator 100 is communicated with the freezing chamber through a pipeline, and a pipeline between the evaporator 100 and the freezing chamber is provided with a third valve; the evaporator 100 is communicated with the refrigerating chamber through a pipeline, and a fourth valve is arranged on the pipeline between the evaporator 100 and the refrigerating chamber.
Step S104: when entering a defrosting mode, controlling the first valve 5 and the second valve 7 to be opened, and controlling the third valve and the fourth valve to be closed; when entering into defrosting mode, the air supply assembly is controlled to be communicated with the evaporator chamber, the second fan 8 is controlled to be communicated with the drainage pipeline 4, and the evaporator chamber is controlled to be blocked from the freezing chamber and the refrigerating chamber.
Step S105: judging that the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is more than or equal to a first preset thickness value hA and less than a second preset thickness value hB;
step S106: if yes, controlling the first heating device 2 to work independently;
the air blowing assembly of the present embodiment includes a first fan 13 for introducing air of the external environment into the air blowing assembly; the defrosting structure further includes a second fan 8 for discharging the hot humid air passing through the evaporator 100 out of the evaporator chamber.
Step S107: if the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is greater than or equal to the first preset thickness value hA and less than the second preset thickness value hB, controlling the first fan 13 and the second fan 8 to operate at a first preset speed V1;
step S108: judging whether the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is more than or equal to a second preset thickness value hB and less than or equal to a third preset thickness value hC;
step S109: if yes, the first heating device 2 and the second heating device 3 are controlled to work simultaneously.
Step S110: if the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is greater than or equal to the second preset thickness value hB and less than or equal to the third preset thickness value hC, controlling the first fan 13 and the second fan 8 to operate at the first preset speed V2; wherein: the second preset speed is higher than the first preset speed, and the third preset thickness value hC is higher than the second preset thickness value hB.
Step S111: judging that the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is less than or equal to a third preset thickness value hC;
step S112: if yes, the first heating device 2 and the second heating device 3 are controlled to work simultaneously.
Step S113: if the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is less than or equal to a third preset thickness value hC, controlling the first fan 13 and the second fan 8 to operate at a first preset speed V2; wherein: the second preset speed is higher than the first preset speed, and the third preset thickness value hC is higher than the second preset thickness value hB.
In the above-mentioned step S105 to step S113, the magnitude relation between the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 and the first preset thickness value hA, the second preset thickness value hB, and the third preset thickness value hC is judged. The first predetermined thickness value hA, the second predetermined thickness value hB and the third predetermined thickness value hC can be set according to practical situations and experience, and are not limited herein.
According to different frost layer thicknesses on the surface of the evaporator 100, the first heating device 2 and the second heating device 3 are controlled to work, and different defrosting modes are executed, so that quick defrosting of the evaporator 100 in the evaporator chamber is realized, and defrosting efficiency and dehumidifying effect are improved.
When the average of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is relatively thin, the first fan 13 and the second fan 8 are operated at a lower speed, and the power consumption can be reduced. When the average of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is relatively thick, the first fan 13 and the second fan 8 are operated at a high speed, and the defrosting efficiency can be improved, so that the humid air is discharged out of the evaporator chamber as soon as possible to prevent frosting again.
When the average value of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is relatively thick, the first heating device 2 and the second heating device 3 are controlled to work simultaneously, wherein the first heating device 2 heats the airflow blowing to the evaporator 100 and dries the humid air around the evaporator 100, the second heating device 3 is located below the evaporator 100, defrosting of the lower frost layer of the evaporator 100 is facilitated, and the two heating devices work together to improve defrosting efficiency. When the average of the thickness of the upper frost layer of the evaporator 100 and the thickness of the lower frost layer of the evaporator 100 is relatively thin, only the first heating means 2 is turned on, which is advantageous in reducing energy consumption.
Step S114: acquiring the temperature in the evaporator chamber; and judging whether the temperature in the evaporator chamber is greater than or equal to a set temperature T0. Whether the defrosting mode is stopped or not is controlled according to the temperature in the evaporator chamber, and the refrigeration of the refrigerator is prevented from being influenced.
Step S115: when the temperature in the evaporator chamber is greater than or equal to the set temperature T0, controlling the first heating device 2 and the second heating device 3 to stop working; if not, the first fan 13 and the second fan 8 are controlled to continue to run at the original speed, and the first heating device 2 and/or the second heating device 3 are controlled to continue heating.
Step S116: and when the temperature in the evaporator chamber is greater than or equal to the set temperature T0 and the first heating device 2 and the second heating device 3 stop working, controlling the first fan 13 and the second fan 8 to continue to run at the original rotating speed for a second preset time and then stop working. Wherein, the value range of the second preset time is 100S-250S, preferably 180S.
When the temperature in the evaporator chamber is more than or equal to the set temperature, the first heating device 2 and the second heating device 3 stop working, a drying link is started, the first fan 13 and the second fan 8 continue to operate for 180s at the original speed, residual water in the evaporator chamber is thoroughly dried by using the waste heat in the evaporator chamber, the time of the process is greatly shortened compared with the original defrosting and dripping link, meanwhile, the drying degree of the evaporator chamber can be increased, and the energy consumption is reduced.
Step S117: after the first fan 13 and the second fan 8 stop working, the first valve 5 and the second valve 7 are controlled to be closed, and the third valve and the fourth valve are controlled to be opened; namely, the air supply assembly is controlled to be blocked with the evaporator chamber, the second fan 8 is blocked with the drainage pipeline 4, and the conduction between the evaporator chamber and the freezing chamber and the refrigerating chamber is controlled; the refrigerator exits the defrosting mode and enters the refrigerating mode. And the refrigerator refrigeration is prevented from being influenced by overlong defrosting time.
The defrosting control method of the embodiment sets four different frosting thickness ranges according to the average value of the upper frost layer thickness of the evaporator 100 and the lower frost layer thickness of the evaporator 100, and executes different defrosting modes by controlling the rotating speeds of the first fan 13 and the second fan 8 and the working conditions of the first heating device 2 and the second heating device 3 under different frost layer thicknesses, thereby realizing the purpose of accurate and rapid defrosting, and reducing energy consumption while improving defrosting efficiency.
The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (16)
1. A defrosting structure is characterized by comprising an air supply assembly and a first heating device, wherein:
an air outlet of the air supply assembly faces the evaporator and is used for blowing air of the external environment to the evaporator; the first heating device is positioned outside the air supply assembly, arranged between an air outlet of the air supply assembly and the evaporator and used for heating air flow blowing to the evaporator and drying wet air around the evaporator.
2. The defrosting structure of claim 1, wherein the air outlet of the air supply assembly is located above the evaporator, or the air outlet of the air supply assembly is located beside the evaporator, and the first heating device is disposed near one side of the evaporator.
3. The defrosting structure according to claim 1, wherein the first heating means includes two or more heating portions, the heating portions being arranged in a width direction of the evaporator, and/or the heating portions being arranged in a length direction of the evaporator.
4. The structure of defrosting of claim 1, wherein the air supply assembly comprises a first fan, an air delivery pipe and an air outlet pipe assembly, wherein:
the first fan is communicated with the air conveying pipe and used for introducing air of an external environment into the air conveying pipe, a communicated state or a blocked state is arranged between the air inlet of the air outlet pipe assembly and the air conveying pipe, and the air outlet of the air outlet pipe assembly faces the evaporator.
5. The defrosting structure of claim 4 wherein the air outlet pipe assembly comprises an air outlet pipe, and the air outlet pipe is provided with air outlets which are evenly spaced on the air outlet pipe.
6. The defrosting structure according to claim 5, wherein all the air outlet pipes are communicated with each other, and the air outlet pipes are arranged along a width direction of the evaporator, or the air outlet pipes are arranged along a length direction of the evaporator.
7. The structure of claim 1, comprising a second heating device located below or alongside the evaporator.
8. The structure of claim 7, further comprising:
a detection unit for detecting the thickness of the frost layer on the surface of the evaporator;
and the control unit is electrically connected with the detection unit, the first heating device and the second heating device and is used for controlling the first heating device to work independently or controlling the first heating device and the second heating device to work simultaneously according to the frost layer thickness information detected by the detection unit.
9. The structure of claim 1, further comprising a flow guide duct located below the evaporator, an outlet of the flow guide duct communicating with an outside of an evaporator chamber, and a second fan provided at an air-out side of the evaporator for blowing hot and humid air passing through the evaporator toward the flow guide duct.
10. A refrigerator characterized by comprising an evaporator and the defrosting structure of any one of claims 1 to 9.
11. A defrosting control method of a refrigerator according to claim 10, wherein the defrosting structure includes a second heating device, the second heating device being located below the evaporator or beside the evaporator; the control method comprises the following steps:
acquiring frost layer thickness information of the surface of the evaporator;
in the defrosting mode, the air supply assembly is controlled to be communicated with an evaporator chamber, and the first heating device is controlled to work alone or the first heating device and the second heating device are controlled to work simultaneously according to the thickness of a frost layer on the surface of the evaporator.
12. The defrosting control method according to claim 11 wherein the obtaining of the thickness of the frost layer on the surface of the evaporator comprises:
the thickness of the frost layer on the upper part of the evaporator and the thickness of the frost layer on the lower part of the evaporator were obtained, and the average of the two was calculated.
13. The defrosting control method according to claim 11 or 12, wherein the controlling the first heating means to operate alone or the first heating means and the second heating means to operate simultaneously according to the thickness of the frost layer on the surface of the evaporator comprises:
if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is greater than or equal to a first preset thickness value and smaller than a second preset thickness value, controlling the first heating device to work independently;
and if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is larger than or equal to a second preset thickness value, controlling the first heating device and the second heating device to work simultaneously.
14. The defrosting control method of claim 13, wherein the air supply assembly includes a first fan for introducing air of an external environment into the air supply assembly; the defrosting structure further comprises a second fan for discharging the hot humid air passing through the evaporator out of the evaporator chamber;
the controlling the first heating device to work alone or the first heating device and the second heating device to work simultaneously according to the thickness of the frost layer on the surface of the evaporator further comprises:
if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is less than or equal to a third preset thickness value, controlling the first fan and the second fan to run at a first preset speed;
if the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is larger than a third preset thickness value, controlling the first fan and the second fan to run at a second preset speed;
wherein: the second preset speed is higher than the first preset speed, and the third preset thickness value is higher than the second preset thickness value.
15. The defrosting control method according to claim 14, wherein the control method further comprises:
acquiring the temperature in the evaporator chamber;
and when the temperature in the evaporator chamber is greater than or equal to the set temperature, controlling the first heating device and the second heating device to stop working, and controlling the first fan and the second fan to continuously run at the original rotating speed for a second preset time and then stop working.
16. The defrosting control method of claim 13 wherein in the defrosting mode, placing the air supply assembly in communication with an evaporator chamber comprises:
and when the refrigerating operation time of the refrigerator is longer than a first set time and the average value of the thickness of the upper frost layer of the evaporator and the thickness of the lower frost layer of the evaporator is longer than the first preset thickness value, controlling the refrigerator to enter the defrosting mode.
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| CN202210877016.5A CN115164484A (en) | 2022-07-25 | 2022-07-25 | Defrosting structure, refrigerator and defrosting control method |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135791A (en) * | 2015-03-13 | 2015-12-09 | 合肥美的电冰箱有限公司 | Defrosting system and defrosting method for air cooling refrigerator and air cooling refrigerator |
| CN205593264U (en) * | 2016-05-03 | 2016-09-21 | 海信（山东）冰箱有限公司 | Air -cooled refrigerator |
| CN107606844A (en) * | 2017-08-18 | 2018-01-19 | 青岛海尔股份有限公司 | Refrigerator |
| JP2018066545A (en) * | 2016-10-21 | 2018-04-26 | アクア株式会社 | refrigerator |
| CN209085142U (en) * | 2018-09-21 | 2019-07-09 | 海信（山东）冰箱有限公司 | A kind of wind cooling refrigerator |
| CN110986465A (en) * | 2019-11-11 | 2020-04-10 | 长虹美菱股份有限公司 | Refrigerator defrosting system |
| CN211400476U (en) * | 2019-08-28 | 2020-09-01 | 合肥雪祺电气有限公司 | Improved forced defrosting structure and refrigerator |
| CN111780347A (en) * | 2020-06-17 | 2020-10-16 | 宁波奥克斯电气股份有限公司 | Defrosting method and device for air conditioner external unit, air conditioner and storage medium |
| CN112747543A (en) * | 2021-01-07 | 2021-05-04 | 珠海格力电器股份有限公司 | Refrigerator defrosting device, control method and refrigerator |
| CN112902543A (en) * | 2021-02-07 | 2021-06-04 | 珠海格力电器股份有限公司 | Defrosting system and refrigerator |
| CN113639499A (en) * | 2021-08-05 | 2021-11-12 | 珠海格力电器股份有限公司 | Heater control system, defrosting control method, refrigerating system and refrigerator |
| CN113776266A (en) * | 2021-09-06 | 2021-12-10 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerator |
| CN218296365U (en) * | 2022-07-25 | 2023-01-13 | 珠海格力电器股份有限公司 | Defrosting structure and refrigerator |
-
2022
- 2022-07-25 CN CN202210877016.5A patent/CN115164484A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135791A (en) * | 2015-03-13 | 2015-12-09 | 合肥美的电冰箱有限公司 | Defrosting system and defrosting method for air cooling refrigerator and air cooling refrigerator |
| CN205593264U (en) * | 2016-05-03 | 2016-09-21 | 海信（山东）冰箱有限公司 | Air -cooled refrigerator |
| JP2018066545A (en) * | 2016-10-21 | 2018-04-26 | アクア株式会社 | refrigerator |
| CN107606844A (en) * | 2017-08-18 | 2018-01-19 | 青岛海尔股份有限公司 | Refrigerator |
| CN209085142U (en) * | 2018-09-21 | 2019-07-09 | 海信（山东）冰箱有限公司 | A kind of wind cooling refrigerator |
| CN211400476U (en) * | 2019-08-28 | 2020-09-01 | 合肥雪祺电气有限公司 | Improved forced defrosting structure and refrigerator |
| CN110986465A (en) * | 2019-11-11 | 2020-04-10 | 长虹美菱股份有限公司 | Refrigerator defrosting system |
| CN111780347A (en) * | 2020-06-17 | 2020-10-16 | 宁波奥克斯电气股份有限公司 | Defrosting method and device for air conditioner external unit, air conditioner and storage medium |
| CN112747543A (en) * | 2021-01-07 | 2021-05-04 | 珠海格力电器股份有限公司 | Refrigerator defrosting device, control method and refrigerator |
| CN112902543A (en) * | 2021-02-07 | 2021-06-04 | 珠海格力电器股份有限公司 | Defrosting system and refrigerator |
| CN113639499A (en) * | 2021-08-05 | 2021-11-12 | 珠海格力电器股份有限公司 | Heater control system, defrosting control method, refrigerating system and refrigerator |
| CN113776266A (en) * | 2021-09-06 | 2021-12-10 | 珠海格力电器股份有限公司 | Defrosting control method and device and refrigerator |
| CN218296365U (en) * | 2022-07-25 | 2023-01-13 | 珠海格力电器股份有限公司 | Defrosting structure and refrigerator |
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