CN103968627A - Evaporator and defrosting device thereof - Google Patents

Evaporator and defrosting device thereof Download PDF

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Publication number
CN103968627A
CN103968627A CN201310032465.0A CN201310032465A CN103968627A CN 103968627 A CN103968627 A CN 103968627A CN 201310032465 A CN201310032465 A CN 201310032465A CN 103968627 A CN103968627 A CN 103968627A
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CN
China
Prior art keywords
evaporator
evaporimeter
heating
irony
electromagnetic
Prior art date
Application number
CN201310032465.0A
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Chinese (zh)
Other versions
CN103968627B (en
Inventor
郑健
蒲显开
李高杰
孙永升
Original Assignee
海尔集团公司
青岛海尔股份有限公司
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Priority to CN201310032465.0A priority Critical patent/CN103968627B/en
Publication of CN103968627A publication Critical patent/CN103968627A/en
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Publication of CN103968627B publication Critical patent/CN103968627B/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/02Evaporators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B47/00Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02Defrosting cycles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06Removing frost
    • F25D21/08Removing frost by electric heating
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
    • F28D1/0477Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F17/00Removing ice or water from heat-exchange apparatus
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B6/00Heating by electric, magnetic, or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/10Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/105Induction heating apparatus, other than furnaces, for specific applications using a susceptor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2400/00General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/01Heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071Evaporators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00Fins
    • F28F2215/04Assemblies of fins having different features, e.g. with different fin densities
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B2214/00Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
    • H05B2214/02Heaters specially designed for de-icing or protection against icing

Abstract

The invention discloses an evaporator and a defrosting device thereof. The defrosting device of the evaporator comprises an electromagnetic heating module and a metal heating unit matched with the electromagnetic heating module. Through arrangement of the electromagnetic heating module and the metal heating unit matched with the electromagnetic heating module, by virtue of an electromagnetic induction principle, when the electromagnetic heating module works, an alternating magnetic field is generated around the electromagnetic heating module, and when magnetic lines of the alternating magnetic field pass through the metal heating unit, large eddy current is generated inside the metal heating unit to enable the metal heating unit to generate heat so as to heat and defrost; the metal heating unit can be set into a proper form in a matching way according to the size and the shape of the evaporator, so that overall heating of the evaporator is achieved, the defrosting efficiency is improved and the energy consumption is reduced.

Description

Evaporator defrost device and there is its evaporimeter
Technical field
The invention belongs to field of domestic appliances manufacture technology, be specifically related to a kind of evaporator defrost device, and there is the evaporimeter of this evaporator defrost device.
Background technology
In prior art, mostly refrigerator automatic defrosting function is by the mode of resistance-type heater heating fumigators, utilizes the heat conduction of evaporimeter that frost is eliminated.Use single heater due to general, and heating location fixes, therefore can first melt the frost of evaporimeter bottom when heater work, then conduct the frost that could melt evaporimeter top by heat.So inevitably, base of evaporator can be heated near the part of heater always, after defrosting finishes, because the cold-producing medium in evaporimeter and refrigerant pipe is by superheated, must cause the rising of refrigerating chamber space temperature, increase the demand to refrigeration for refrigerator amount, and then increased energy consumption.
Summary of the invention
One of object of the present invention is to provide a kind of evaporator defrost device, and it can heat evaporimeter entirety simultaneously, and defrosting efficiency is high, reduces energy consumption.
The present invention also aims to provide a kind of evaporimeter.
One of for achieving the above object, the invention provides a kind of evaporator defrost device, comprising:
Electromagnetic Heating module and the metallic heating body coordinating with described Electromagnetic Heating module.
Further improve as the present invention, described metallic heating body is irony heating board.
Further improve as the present invention, described metallic heating body comprises irony fin, and described irony fin is used as evaporator fin.
For realizing above-mentioned another goal of the invention, the invention provides a kind of evaporimeter, the some evaporator fins that comprise evaporator tube and coordinate with evaporator tube, described evaporimeter also comprises evaporator defrost device, the metallic heating body that described evaporator defrost device comprises Electromagnetic Heating module and coordinates with described Electromagnetic Heating module.
Further improve as the present invention, described metallic heating body is irony heating board, described irony heating board and vertical setting of described some evaporator fins.
Further improve as the present invention, in described some evaporator fins is irony fin at least partly.
Further improve as the present invention, described metallic heating body is through antirust processing.
Further improve as the present invention, described evaporimeter also comprises the temperature sensor for gathering evaporator temperature.
Further improve as the present invention, described evaporimeter also comprises over-temperature protection device, and described over-temperature protection device disconnects described Electromagnetic Heating module while being so arranged to make the temperature of described evaporimeter to exceed default temperature value.
Further improve as the present invention, described over-temperature protection device comprises fusible link.
Compared with prior art, evaporator defrost device provided by the invention is by the metallic heating body that Electromagnetic Heating module is provided and coordinates with Electromagnetic Heating module, utilize electromagnetic induction principle, in the time that Electromagnetic Heating module is worked, it can produce an alternating magnetic field around, when the magnetic line of force of alternating magnetic field passes through metallic heating body, and a large amount of eddy current of the inner generation of metallic heating body, make metallic heating body self-heating, and then heating defrosting; This metallic heating body can be equipped with as suitable form according to evaporimeter size and shape, realizes the entirety of evaporimeter and is heated, and improves defrosting efficiency, reduces energy consumption.
Brief description of the drawings
Fig. 1 is the side view of evaporimeter one embodiment of the present invention;
Fig. 2 is the front view of evaporimeter one embodiment of the present invention.
Detailed description of the invention
Describe the present invention below with reference to detailed description of the invention shown in the drawings.But these embodiments do not limit the present invention, the conversion in structure, method or function that those of ordinary skill in the art makes according to these embodiments is all included in protection scope of the present invention.
Join Fig. 1, introduce a detailed description of the invention of evaporator defrost device of the present invention.In the present embodiment, this evaporator defrost device comprises Electromagnetic Heating module 12 and metallic heating body.
Electromagnetic Heating module 12 generally includes magnet exciting coil (not shown), and in the time that electric current passes through Electromagnetic Heating module 12, due to electromagnetic induction principle, magnet exciting coil produces alternating magnetic field around.Electromagnetic Heating module 12 is equipped with metallic heating body, it will be appreciated that the magnetic line of force of the alternating magnetic field producing when said " being equipped with " refers to switching on through Electromagnetic Heating module 12 at least partly of metallic heating body here.So, metallic heating body is inner can produce a large amount of eddy current, and then makes himself heating defrosting.
Electromagnetic Heating module 12 can improve metallic heating body heating defrosting efficiency with the suitable configuration of form of metallic heating body.For example in the present embodiment, metallic heating body is set to a tabular, its laminating Electromagnetic Heating module 12, and so, the magnetic line of force of the alternating magnetic field that Electromagnetic Heating module 12 produces can farthest pass metallic heating body.
The material of metallic heating body preferably can adopt iron, and the energy conversion efficiency of irony heating board 11 is higher, and heating power, the temperature producing is conducive to realize quickly the defrosting of evaporimeter 100.And the magnetic conductivity of irony heating board 11 is higher, there is more shallow Kelvin effect, be conducive to irony heating board 11 and itself rely on above-mentioned eddy heating for heating.Certainly, in the embodiment of some replacements, can utilize the alloy of for example iron content to make metal heating board, to meet the needs of different evaporators heating defrosting power, these must be worked as and belong to spiritual category of the present invention.
Coordinate with reference to Fig. 2, in the present embodiment, described metallic heating body can also comprise irony fin 13, and this irony fin 13 is used as the fin of evaporimeter 100.In the alternating magnetic field that irony fin 13 produces at Electromagnetic Heating module 12, produce a large amount of eddy current, and then self-heating, realize the defrosting of evaporimeter.In certain embodiments, this irony fin 13 can replace irony heating board 11 completely, saves production cost.In concrete Production design, according to structural design or the required defrosting efficiency of different evaporators, can adopt the metallic heating body of irony heating board 11 and irony fin 13 as evaporator defrost device simultaneously, or be in both, alternatively to adopt the technique effect that reaches identical.
Join Fig. 2, introduce a detailed description of the invention of evaporimeter of the present invention.In the present embodiment, this evaporimeter 100 comprises evaporator tube 20, some evaporator fins 30 and evaporator defrost device.
Evaporator tube 20 is equipped with evaporator fin 30, and evaporator fin 30 is linked on evaporator tube 20 for improving the heat exchange efficiency of evaporimeter 100.The metallic heating body that evaporator defrost device comprises Electromagnetic Heating module 12 and coordinates with Electromagnetic Heating module 12.Metallic heating body is preferably set to irony heater, and this Electromagnetic Heating module 12 explains in the above-described embodiment with the principle of metallic heating body cooperating, and therefore not to repeat here.
Metallic heating body is preferably set to irony heating board 11, and the setting vertical with some evaporator fins 30 of this irony heating board 11 farthest fitted to realize with evaporimeter 100.The heat that metallic heating body produces transmits by evaporator fin 30, realizes the entirety defrosting of whole evaporimeter 100.And, be irony heating board 11 owing to being provided with metallic heating body, so the area of irony heating board 11 is set to evaporimeter 100 adaptations ordinatedly, when realizing evaporimeter 100 entirety, be heated, improve defrosting efficiency.
As preferred embodiment, in evaporator fin 30 is irony fin 13 at least partly, this irony fin 13 is equivalent to above-mentioned metallic heating body, the line of magnetic induction of the alternating magnetic field that Electromagnetic Heating module 12 produces is by these these irony fins 13, irony fin 13 itself is generated heat, and then realize defrost function.These irony fins 13 are preferably evenly distributed in evaporator fin 30, ensure being heated evenly when evaporimeter 100 defrosts.
In the embodiment of some replacements, because 13 defrost functions that can ensure of irony fin are satisfied the demand, can omit the irony heating board 11 arranging in above-mentioned embodiment, further to reduce costs.
Evaporimeter 100 also comprises the temperature sensor 40 for gathering evaporimeter 100 temperature, it will be appreciated that, here said " evaporator temperature " do not refer to the absolute temperature of evaporimeter entirety, in some embodiments, temperature sensor 40 can also judge thus for gathering the temperature of evaporator fin 30 the defrost situation of evaporimeter 100 entirety, in other embodiments, temperature sensor 40 can be the defrost situation that gathers the temperature of evaporator tube 20 and then judge evaporimeter 100 entirety.The situation that can be arranged at the different parts of evaporimeter place for temperature sensor 40, is combined with corresponding preset temperature value, and the temperature that temperature sensor 40 is collected is compared with this preset temperature value, and whether defrost is complete can to judge evaporimeter 100.
The process that the above-mentioned temperature that temperature sensor 40 is collected and preset temperature value are relatively also controlled can be for example to complete under the control of the controller of refrigerator.Controller can be to comprise microcontroller (Micro Controller Unit, MCU) integrated circuit, well-known to those skilled in the artly be, microcontroller can comprise CPU (Central Processing Unit, CPU), read-only memory module (Read-Only Memory, ROM), random memory module (Random Access Memory, RAM), time block, digital-to-analogue conversion module (A/D Converter) and some input/output end ports.Certainly, controller also can adopt the integrated circuit of other form, as application-specific IC (Application Specific Integrated Circuits, ASIC) or field programmable gate array (Field-programmable Gate Array, FPGA) etc.
In order further to ensure evaporator defrost safety, the evaporimeter 100 of present embodiment is also equipped with over-temperature protection device 50, and this over-temperature protection device 50 disconnects Electromagnetic Heating module 12 while being so arranged to make the temperature of evaporimeter to exceed default temperature value.In the defrost process of evaporimeter; very important is that meeting may be because temperature sensor 40 breaks down; cause defrosting to finish working on of post heating device; and then the waste of the energy causing; or even electrical equipment accident; by over-temperature protection device 50 is set, can avoid the generation of bad accident in defrost process, improve the Reliability of product.
In the present embodiment; over-temperature protection device 50 comprises fusible link; this fusible link is connected in the path of powering to Electromagnetic Heating module 12; and it is arranged on the position that can coordinate with evaporator fin 30 or evaporator tube 20; so that fusible link can be obtained and evaporator fin 30 or the close temperature of evaporator tube 20 as far as possible; in the time that the temperature at these positions exceedes fusible link fusing-off temperature, can cause the fusing of fusible link, and then make Electromagnetic Heating module 12 disconnect and quit work.Particularly, by selecting the fusible link of different size, can reach the overheat protector function of different temperatures, to adapt to the demand of different evaporators.
In the above-described embodiment, owing to preferably having adopted iron material matter to make metallic heating body, so preferably metallic heating body (comprising irony heating board 11 and irony fin 13) is carried out to antirust processing, ensure the normal of evaporator defrost function.Antirust processing can be for example to apply antirust coat at metal body surface, certainly, is only exemplarily to describe here, and in the embodiment of more replacements, antirust processing can also be other technique that adopts those of ordinary skill in the art to grasp.
The present invention is by above-mentioned embodiment, there is following beneficial effect: cross the metallic heating body that Electromagnetic Heating module 12 is provided and coordinates with Electromagnetic Heating module 12, utilize electromagnetic induction principle, in the time that Electromagnetic Heating module 12 is worked, it can produce an alternating magnetic field around, when the magnetic line of force of alternating magnetic field passes through metallic heating body, and a large amount of eddy current of the inner generation of metallic heating body, make metallic heating body self-heating, and then heating defrosting; This metallic heating body can be equipped with as suitable form according to evaporimeter size and shape, realizes the entirety of evaporimeter and is heated, and improves defrosting efficiency, reduces energy consumption.
Be to be understood that, although this description is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should make description as a whole, technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.
Listed a series of detailed description is above only illustrating for feasibility embodiment of the present invention; they are not in order to limit the scope of the invention, all do not depart from the equivalent embodiment that skill spirit of the present invention does or change and all should be included in protection scope of the present invention within.

Claims (10)

1. an evaporator defrost device, is characterized in that, comprising:
Electromagnetic Heating module and the metallic heating body coordinating with described Electromagnetic Heating module.
2. evaporator defrost device according to claim 1, is characterized in that, described metallic heating body is irony heating board.
3. evaporator defrost device according to claim 1, is characterized in that, described metallic heating body comprises irony fin, and described irony fin is used as evaporator fin.
4. an evaporimeter, the some evaporator fins that comprise evaporator tube and coordinate with evaporator tube, it is characterized in that, described evaporimeter also comprises evaporator defrost device, the metallic heating body that described evaporator defrost device comprises Electromagnetic Heating module and coordinates with described Electromagnetic Heating module.
5. evaporimeter according to claim 4, is characterized in that, described metallic heating body is irony heating board, described irony heating board and vertical setting of described some evaporator fins.
6. evaporimeter according to claim 4, is characterized in that, in described some evaporator fins is irony fin at least partly.
7. evaporimeter according to claim 4, is characterized in that, described metallic heating body is through antirust processing.
8. evaporimeter according to claim 4, is characterized in that, described evaporimeter also comprises the temperature sensor for gathering evaporator temperature.
9. evaporimeter according to claim 4, is characterized in that, described evaporimeter also comprises over-temperature protection device, and described over-temperature protection device disconnects described Electromagnetic Heating module while being so arranged to make the temperature of described evaporimeter to exceed default temperature value.
10. evaporimeter according to claim 9, is characterized in that, described over-temperature protection device comprises fusible link.
CN201310032465.0A 2013-01-29 2013-01-29 Vaporizer defroster and there is its vaporizer Active CN103968627B (en)

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Application Number Priority Date Filing Date Title
CN201310032465.0A CN103968627B (en) 2013-01-29 2013-01-29 Vaporizer defroster and there is its vaporizer
PCT/CN2013/082694 WO2014117511A1 (en) 2013-01-29 2013-08-30 Evaporator defrosting device and evaporator having same

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CN103968627A true CN103968627A (en) 2014-08-06
CN103968627B CN103968627B (en) 2016-11-23

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CN105928091A (en) * 2016-05-18 2016-09-07 胡振强 Outer unit of heating system of efficient heat pump
WO2017137229A1 (en) * 2016-02-08 2017-08-17 BSH Hausgeräte GmbH Refrigeration appliance having a radiative heating unit
CN108168197A (en) * 2017-12-27 2018-06-15 青岛海尔股份有限公司 Refrigerator and its defrosting control method
CN108302880A (en) * 2017-12-27 2018-07-20 青岛海尔股份有限公司 Refrigerator and its defrosting control method
CN108759177A (en) * 2018-05-09 2018-11-06 青岛海尔股份有限公司 Evaporator assembly, the refrigerator with the assembly and refrigerator defrosting control method
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CN109798718A (en) * 2017-11-16 2019-05-24 合肥华凌股份有限公司 The control method and control device and equipment of damper assemblies
CN109798719A (en) * 2017-11-16 2019-05-24 合肥华凌股份有限公司 The control method and control device and equipment of damper assemblies
CN109798710A (en) * 2017-11-16 2019-05-24 合肥华凌股份有限公司 The damper assemblies of refrigeration equipment and refrigeration equipment with it
CN109798720A (en) * 2017-11-16 2019-05-24 合肥华凌股份有限公司 The damper assemblies of refrigeration equipment and refrigeration equipment with it
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CN111594937A (en) * 2020-05-29 2020-08-28 宁波奥克斯电气股份有限公司 Defrosting device and method and air conditioner

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