CN221992180U - Defrosting mechanism and refrigeration equipment - Google Patents
Defrosting mechanism and refrigeration equipment Download PDFInfo
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- CN221992180U CN221992180U CN202323480090.2U CN202323480090U CN221992180U CN 221992180 U CN221992180 U CN 221992180U CN 202323480090 U CN202323480090 U CN 202323480090U CN 221992180 U CN221992180 U CN 221992180U
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- evaporator
- heating module
- air duct
- defrosting
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- 238000010257 thawing Methods 0.000 title claims abstract description 69
- 238000005057 refrigeration Methods 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 132
- 238000000576 coating method Methods 0.000 claims abstract description 35
- 239000011248 coating agent Substances 0.000 claims abstract description 31
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 13
- 239000003507 refrigerant Substances 0.000 claims description 30
- 238000009413 insulation Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 15
- 230000000694 effects Effects 0.000 description 11
- 230000005674 electromagnetic induction Effects 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
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- 238000001704 evaporation Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000004020 conductor Substances 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 4
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- 239000007788 liquid Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000013518 molded foam Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000011232 storage material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Defrosting Systems (AREA)
Abstract
The utility model relates to the technical field of refrigeration equipment and discloses a defrosting mechanism and refrigeration equipment, wherein the defrosting mechanism comprises a refrigeration system and an electromagnetic heating module, the refrigeration system is provided with an evaporator, the evaporator comprises a plurality of fins, and an electromagnetic heating coating is arranged on the surface of at least part of the fins; the electromagnetic heating module is arranged at one side of the evaporator, and can generate an electromagnetic field so that the electromagnetic heating coating generates heat energy in the electromagnetic field. In the defrosting process of the refrigeration equipment, the electromagnetic heating module generates an alternating electromagnetic field, the alternating electromagnetic field acts on the fins with the electromagnetic heating coating, and heat is generated on the fins, so that the temperature of the evaporator is raised, defrosting is realized, and as a plurality of fins synchronously generate heat, the heat is uniformly distributed in the evaporator, the efficiency is high, the defrosting temperature is reduced, the time is shortened, the overflow of hot steam is reduced, and the temperature fluctuation in the refrigeration equipment in the defrosting process is reduced.
Description
Technical Field
The utility model relates to the technical field of refrigeration equipment, in particular to a defrosting mechanism and refrigeration equipment.
Background
A refrigeration device is a device for providing temperature regulation, such as a refrigerator, freezer, etc., capable of maintaining a stable low-temperature environment for maintaining a low-temperature state of food materials or other articles. The air-cooled refrigerator mainly adopts an electric heater to defrost an evaporator, and has the problems of poor heat transfer efficiency, long time, high energy consumption and the like, hot steam generated in the defrosting process enters a compartment of the refrigerator, so that the temperature of the compartment can be quickly increased, the temperature fluctuation of the compartment is large, and the quality of food storage materials is seriously influenced.
Disclosure of utility model
The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides a defrosting mechanism which utilizes an electromagnetic heating module to defrost an evaporator, thereby effectively reducing defrosting time and reducing hot steam overflow.
The defrosting mechanism comprises a refrigerating system and an electromagnetic heating module, wherein the refrigerating system is provided with an evaporator, the evaporator comprises a plurality of fins, and an electromagnetic heating coating is arranged on the surface of at least part of the fins; the electromagnetic heating module is arranged at one side of the evaporator, and can generate an electromagnetic field so that the electromagnetic heating coating generates heat energy in the electromagnetic field.
The refrigerator provided by the embodiment of the utility model has at least the following beneficial effects:
In the defrosting process of the refrigeration equipment, the electromagnetic heating module generates an alternating electromagnetic field, the alternating electromagnetic field acts on the fins with the electromagnetic heating coating, and heat is generated on the fins, so that the temperature of the evaporator is raised, defrosting is realized, and as a plurality of fins synchronously generate heat, the heat is uniformly distributed in the evaporator, the efficiency is high, the defrosting temperature is reduced, the time is shortened, the overflow of hot steam is reduced, and the temperature fluctuation in the refrigeration equipment in the defrosting process is reduced.
According to some embodiments of the first aspect of the utility model, the evaporator comprises a refrigerant tube to which a plurality of the fins are connected, the surface of the refrigerant tube being provided with an electromagnetic heating coating.
According to some embodiments of the first aspect of the utility model, the refrigeration system comprises a motor and an impeller connected to the motor and provided with an electromagnetic heating coating on the surface of the motor and the impeller arranged on one side of the evaporator.
According to some embodiments of the first aspect of the utility model, the electromagnetic heating module is attached to the evaporator.
A refrigeration appliance according to an embodiment of the second aspect of the present utility model includes a defrosting mechanism according to an embodiment of the first aspect.
According to some embodiments of the second aspect of the present utility model, the refrigerator comprises a box body, a compartment is formed inside the box body, an air duct assembly is arranged on the box body, an air outlet of the air duct assembly is communicated with the compartment, the evaporator is located in an air duct of the air duct assembly, and an electromagnetic heating coating is arranged on the inner wall of the air duct assembly.
According to some embodiments of the second aspect of the present utility model, a damper is connected to the air duct assembly to open or close the air outlet, the refrigeration device has a controller, and the damper and the electromagnetic heating module are electrically connected to the controller.
According to some embodiments of the second aspect of the utility model, the electromagnetic heating module is located in the air duct, and the electromagnetic heating module is connected to a side of the air duct assembly remote from the air outlet.
According to some embodiments of the second aspect of the utility model, the housing is provided with a thermal insulation layer surrounding the compartment, one end of the electromagnetic heating module is embedded in the thermal insulation layer, the air duct assembly is provided with an opening, and the other end of the electromagnetic heating module is located in the opening.
According to some embodiments of the second aspect of the utility model, the air duct assembly comprises a front cover plate, the electromagnetic heating module is connected to an inner wall of the front cover plate, and the front cover plate is provided with a heat insulation layer surrounding the electromagnetic heating module.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
Additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic structural view of a defrosting mechanism according to an embodiment of the first aspect of the present utility model;
Fig. 2 is a schematic structural view of a refrigeration apparatus according to some embodiments of a second aspect of the present utility model;
fig. 3 is a schematic structural view of a refrigeration apparatus according to further embodiments of the second aspect of the present utility model.
The reference numerals are as follows:
a box body 100, a compartment 101 and an insulating layer 102;
A refrigeration system 200, a compressor 210, a condenser 220, a throttle device 230, an evaporator 240;
An electromagnetic heating module 300;
Air duct assembly 400, air duct 401, front cover 410, insulation 411, back cover 420, damper 430.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.
In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
The refrigerating apparatus is an apparatus for providing temperature regulation, such as a refrigerator, a freezer, etc., which can maintain a stable low-temperature environment for maintaining a low-temperature state of food materials or other articles, and is widely used. In the related art, a refrigeration system of a refrigerator generally adopts compression cycle refrigeration, which includes a compressor, a condenser, a throttling device, and an evaporator, and a refrigerant circulates in the compressor, the condenser, the throttling device, and the evaporator to realize refrigeration. In an air-cooled refrigerator, a refrigerant evaporates in an evaporator to absorb heat, so that cold air is produced, the cold air is input into a compartment of the refrigerator, and because the cold air circularly flows in the evaporator and the compartment, water vapor in the compartment can be taken away, and the temperature of the evaporator is extremely low, the water vapor is condensed into frost on the surface of the evaporator, the frost can influence the heat exchange efficiency of the evaporator, and the frost is required to be removed to eliminate the frost, so that the performance of the evaporator is recovered.
At present, an electric heater is mainly used for heating and defrosting an evaporator, hot steam generated in the defrosting process enters a compartment of the refrigerator, the temperature of the compartment can be quickly increased, the temperature fluctuation of the compartment is large, the quality of food storage is seriously affected, and the use experience of a user is poor; in addition, the shape of the evaporator is limited, the contact area between the electric heater and the evaporator is small, and the problems of poor heat transfer efficiency, long time, high energy consumption and the like exist.
The refrigerating device can be a refrigerator or a freezer, and can also be other products, and the refrigerator is taken as an example for the refrigerating device.
The embodiment of the first aspect of the utility model provides a defrosting mechanism which utilizes an electromagnetic heating principle to defrost, can effectively reduce defrosting time and defrosting temperature, and is beneficial to reducing the temperature rise of a compartment.
It will be appreciated that the refrigerator is provided with a compartment 101 in the refrigerator 100, the compartment 101 is generally divided into a refrigerating compartment and a freezing compartment, as shown in fig. 1, a refrigeration system 200 generally used in the refrigerator includes a compressor 210, a condenser 220, a throttling device 230 and an evaporator 240 sequentially connected through pipes, the condenser 220 is generally connected with a condensing fan, the evaporator 240 is generally connected with an evaporating fan, and the compressor 210, the condenser 220, the throttling device 230 and the evaporator 240 form a circulation path of refrigerant through pipes. The compressor 210, the condenser 220, and the throttle device 230 are generally disposed in a press compartment at the back of the cabinet 100, a refrigerator door is provided at the front of the cabinet 100 to open and close the compartment 101, and the evaporator 240 is disposed at a position close to the compartment 101. When the refrigeration system 200 is operated, the compressor 210 compresses the sucked refrigerant gas, then the compressed high-temperature and high-pressure refrigerant is input into the condenser 220, the condenser 220 is utilized to cool the refrigerant, the condensing fan blows air to the condenser 220 to help the condenser 220 cool, the medium-temperature and high-pressure refrigerant output by the condenser 220 is input into the throttling device 230, the throttling device 230 plays a role of throttling and depressurization, the temperature and the pressure of the refrigerant are reduced, the refrigerant entering the evaporator 240 becomes low-pressure liquid with lower saturation temperature, the refrigerant evaporates in the evaporator 240 and absorbs the heat of the external air, the evaporating fan drives the air flow to pass through the evaporator 240, cold air is produced, the cold air is input into the compartment 101, the compartment 101 maintains a stable low-temperature environment for freezing or storing various objects, and finally the refrigerant returns to the compressor 210 to complete one cycle. The compressor 210 continuously operates to supply power to the refrigerant, and drives the refrigerant to circulate, thereby continuously cooling.
It can be understood that the refrigerator is internally provided with the air duct assembly 400, the evaporator 240 is arranged in the air duct 401 of the air duct assembly 400, the air is driven to pass through the evaporator 240 by the evaporating fan to prepare cold air, the cold air is input into the compartment 101 through the air duct, the compartment 101 is further provided with an air return port, and the evaporating fan sucks air from the air return port, so that the air is driven to circularly flow, the cold energy is supplemented by the evaporator 240, and the low-temperature environment of the compartment 101 is maintained. However, the air flowing back may carry moisture in the compartment 101, the moisture contacts the low-temperature evaporator 240 and may be condensed into frost, and the frost may seriously affect the heat exchange efficiency by covering the surface of the evaporator 240, resulting in a decrease in the performance of the refrigerator and an increase in the power consumption, thus requiring defrosting of the evaporator 240.
Referring to fig. 1, the defrosting mechanism includes a refrigerating system and an electromagnetic heating module 300, the refrigerating system 200 includes a compressor 210, a condenser 220, a throttle device 230, and an evaporator 240 sequentially connected through pipes, the evaporator 240 includes a plurality of fins, an electromagnetic heating coating is coated on surfaces of the fins, the electromagnetic heating module 300 is disposed at one side of the evaporator 240, when the electromagnetic heating module 300 operates, an electromagnetic field can be generated, the electromagnetic field includes an alternating magnetic field with a direction being continuously changed, and the electromagnetic heating coating on the fins generates heat energy in the alternating magnetic field, thereby heating the fins.
It is understood that the material of the electromagnetic heating coating can be ferrite, stainless steel or other metal materials, or ceramic materials, such as alumina, zirconia and the like, as long as the material can generate heat in an alternating magnetic field, wherein the ferrite material has lower cost and more convenient application.
It should be understood that the evaporator 240 includes a refrigerant tube, typically a copper tube, and a plurality of fins, which are spaced apart from each other in parallel and fixed to the surface of the refrigerant tube, and the fins are fixed to the surface of the copper tube to increase a heat exchange area and accelerate heat exchange, thus generating frost on both the fins and the surface of the copper tube. During defrosting, heat of the fins can be conducted to the copper pipe, so that electromagnetic heating coatings can be coated on the surfaces of all fins, or electromagnetic heating coatings can be coated on the surfaces of part of the fins, for example, the fins are distributed in a staggered mode, and the purpose of heating the evaporator 240 can be achieved.
It can be understood that the principle of electromagnetic heating is an electromagnetic induction phenomenon, that is, an alternating magnetic field with the direction changing continuously is generated by using an alternating current through a coil, a vortex current will appear inside a conductor (electromagnetic heating coating) in the alternating magnetic field (the reason can be referred to faraday's law of electromagnetic induction), which is caused by the vortex electric field pushing carriers in the conductor to move, and the joule heating effect of the vortex current heats the conductor, so that heating is realized.
In the defrosting process of the refrigerator, the compressor 210 of the refrigerating system 200 stops running, after the liquid refrigerant in the evaporator 240 is consumed, the refrigerator is not refrigerated, then the electromagnetic heating module 300 is started, the electromagnetic heating module 300 is utilized to generate an alternating magnetic field with the direction changing continuously, the fins coated with the electromagnetic heating coating are positioned in the alternating magnetic field, and heat is generated due to the electromagnetic induction effect, so that the evaporator 240 is integrally heated, and frost on the surface of the evaporator 240 is driven to melt, so that defrosting is realized. The electromagnetic heating efficiency is high, the time for defrosting is beneficial to shortening, compared with the defrosting mode of electric heating, the time for defrosting by adopting electromagnetic heating is shortened by 40%, the temperature rise in the middle chamber 101 in the defrosting process is reduced to be within 4 ℃, and the method has better technical effect; moreover, as the fins synchronously generate heat, the heat distribution is more uniform, the heat transfer loss is reduced, the defrosting efficiency is high, the defrosting energy consumption is reduced, the temperature rise range of the evaporator 240 is smaller, the overflow of hot steam generated by defrosting to the compartment 101 is reduced, and the influence on food materials in the compartment 101 is reduced.
It will be appreciated that the surface of the refrigerant tube is also covered with frost, and thus an electromagnetic heating coating may also be applied to the surface of the refrigerant tube. When the electromagnetic heating module 300 operates, the electromagnetic heating module 300 is utilized to generate an alternating magnetic field with the direction changing continuously, the refrigerant pipe coated with the electromagnetic heating coating is positioned in the alternating magnetic field, heat is generated due to the electromagnetic induction effect, and the temperature of the refrigerant pipe rises to promote the melting of the frost. The temperature of the refrigerant tube and the fins is raised synchronously, the temperature of the evaporator 240 is raised faster, the defrosting speed is higher, and the highest temperature of the evaporator 240 in the defrosting process can be reduced, so that the overflow of hot steam is reduced, and the temperature fluctuation of the compartment 101 is reduced.
It will be appreciated that the evaporating fan generally comprises a motor and an impeller, and since the motor and the impeller are also inside the air duct 401, there is also frost on the surfaces of the motor and the impeller, which results in a reduced performance of the evaporating fan, especially the impeller, and the frost affects the dynamic balance of the impeller, and thus the surfaces of the motor and the impeller are also coated with an electromagnetic heating coating. When the electromagnetic heating module 300 operates, the electromagnetic heating module 300 is utilized to generate an alternating magnetic field with the direction changing continuously, the motor and the impeller coated with the electromagnetic heating coating are positioned in the alternating magnetic field, heat is generated due to the electromagnetic induction effect, and the temperature of the motor and the impeller rises to promote the melting of the frost. The temperature of the refrigerant tube, the fins, the motor and the impeller are synchronously raised, the temperature of the evaporator 240 is raised faster, the defrosting speed is higher, the highest temperature of the evaporator 240 in the defrosting process can be reduced, the overflow of hot steam is reduced, and the temperature fluctuation of the compartment 101 is reduced.
It will be appreciated that in some embodiments of the first aspect of the present utility model, the electromagnetic heating module 300 is attached to the evaporator 240, and the electromagnetic heating module 300 may be attached to a plurality of fins, because the electromagnetic heating module 300 generates heat during operation, the electromagnetic heating module 300 is attached to the evaporator 240, and the electromagnetic heating module 300 is arranged to transfer heat to the evaporator 240, thereby helping the evaporator 240 to defrost, fully utilizing heat of the electromagnetic heating module 300, and reducing energy consumption of defrosting.
Referring to fig. 2, the second aspect of the present utility model provides a refrigerator including a cabinet 100, a compartment 101 formed inside the cabinet 100, and a defrosting mechanism including a refrigerating system and an electromagnetic heating module 300, the refrigerating system 200 including a compressor 210, a condenser 220, a throttle device 230, and an evaporator 240 sequentially connected through pipes, the evaporator 240 including a plurality of fins, an electromagnetic heating coating being coated on surfaces of the fins, the electromagnetic heating module 300 being disposed at one side of the evaporator 240, the electromagnetic heating module 300 being capable of generating an electromagnetic field including an alternating magnetic field having a continuously changing direction, the electromagnetic heating coating on the fins generating heat energy in the alternating magnetic field, thereby heating the fins when the electromagnetic heating module 300 is operated.
It should be understood that the evaporator 240 includes a refrigerant tube, typically a copper tube, and a plurality of fins, which are spaced apart from each other in parallel and fixed to the surface of the refrigerant tube, and the fins are fixed to the surface of the copper tube to increase a heat exchange area and accelerate heat exchange, thus generating frost on both the fins and the surface of the copper tube. During defrosting, heat of the fins can be conducted to the copper pipe, so that electromagnetic heating coatings can be coated on the surfaces of all fins, or electromagnetic heating coatings can be coated on the surfaces of part of the fins, for example, the fins are distributed in a staggered mode, and the purpose of heating the evaporator 240 can be achieved.
It can be understood that the principle of electromagnetic heating is an electromagnetic induction phenomenon, that is, an alternating magnetic field with the direction changing continuously is generated by using an alternating current through a coil, a vortex current will appear inside a conductor (electromagnetic heating coating) in the alternating magnetic field (the reason can be referred to faraday's law of electromagnetic induction), which is caused by the vortex electric field pushing carriers in the conductor to move, and the joule heating effect of the vortex current heats the conductor, so that heating is realized.
In the defrosting process of the refrigerator, the compressor 210 of the refrigerating system 200 stops running, after the liquid refrigerant in the evaporator 240 is consumed, the refrigerator is not refrigerated, then the electromagnetic heating module 300 is started, the electromagnetic heating module 300 is utilized to generate an alternating magnetic field with the direction changing continuously, the fins coated with the electromagnetic heating coating are positioned in the alternating magnetic field, and heat is generated due to the electromagnetic induction effect, so that the evaporator 240 is integrally heated, and frost on the surface of the evaporator 240 is driven to melt, so that defrosting is realized. The electromagnetic heating efficiency is high, the time for defrosting is beneficial to shortening, compared with the defrosting mode of electric heating, the time for defrosting by adopting electromagnetic heating is shortened by 40%, the temperature rise in the middle chamber 101 in the defrosting process is reduced to be within 4 ℃, and the method has better technical effect; moreover, as the fins synchronously generate heat, the heat distribution is more uniform, the heat transfer loss is reduced, the defrosting efficiency is high, the defrosting energy consumption is reduced, the temperature rise range of the evaporator 240 is smaller, the overflow of hot steam generated by defrosting to the compartment 101 is reduced, and the influence on food materials in the compartment 101 is reduced.
The air duct assembly 400 is further arranged in the box body 100, the air duct assembly 400 is provided with an air outlet, so that the air duct 401 of the air duct assembly 400 is communicated with the compartment 101, the air duct assembly 400 is connected with an air door 430, the air door 430 is used for opening or closing the air outlet, and the air door 430 and the electromagnetic heating module 300 are electrically connected to a controller of the refrigerator.
When the compartment 101 needs to be cooled in the refrigerator operation, the air door 430 is opened, and cold air prepared by the evaporator 240 enters the compartment 101 through the air outlet; in the defrosting process, the controller of the refrigerator controls the air door 430 to close the air outlet, then the electromagnetic heating module 300 is started, the alternating magnetic field with the direction changing continuously is generated by the electromagnetic heating module 300, the surfaces of part of the components of the evaporator 240 are coated with the electromagnetic heating coating, and in the alternating magnetic field, heat is generated due to the electromagnetic induction effect, and the temperature of the evaporator 240 rises to promote the melting of the frost. Since the air outlet is closed by the air door 430, hot steam in the defrosting process can be prevented from overflowing to the compartment 101, the temperature of the compartment 101 is prevented from rising, and food in the compartment 101 is protected.
It will be appreciated that, during defrosting, since the air outlet is closed by the air door 430, air in the air duct 401 cannot enter the compartment 101, and the evaporation fan can be started, and the evaporation fan is used to drive air in the air duct 401 to flow, so that each part of the evaporator 240 is heated more uniformly, which is beneficial to accelerating defrosting speed and reducing defrosting time.
It will be appreciated that in some embodiments of the second aspect of the present utility model, the inner wall of the air duct assembly 400 may be coated with the electromagnetic heating coating because the inner wall of the air duct assembly 400 is exposed to cold air for a long period of time and is in a low temperature state, and thus frost is generated on the inner wall of the air duct assembly 400. When the electromagnetic heating module 300 operates, the electromagnetic heating module 300 is utilized to generate an alternating magnetic field with the direction changing continuously, the inner wall of the air duct assembly 400 coated with the electromagnetic heating coating is in the alternating magnetic field, heat is generated due to the electromagnetic induction effect, the temperature of the air duct assembly 400 rises to promote the melting of the frost, the blocking of the frost on the air duct 401 by the air flow is reduced, and the refrigerating performance is improved. Moreover, the temperature of the air duct assembly 400 rises, so that the space temperature of the air duct 401 can be increased, the temperature of the evaporator 240 is indirectly increased, the temperature of the evaporator 240 is increased, the defrosting speed is higher, the highest temperature of the evaporator 240 in the defrosting process can be reduced, the overflow of hot steam is reduced, and the temperature fluctuation of the compartment 101 is reduced.
It will be appreciated that in some embodiments, as shown in fig. 2, the electromagnetic heating module 300 is also disposed in the air duct 401, and the electromagnetic heating module 300 may be connected to the side of the air duct assembly 400 away from the air outlet so that the distance between the electromagnetic heating module 300 and the air outlet is maximized in consideration of the need to avoid the temperature influence on the compartment 101 as much as possible during defrosting. When defrosting, the electromagnetic heating module 300 is utilized to generate an alternating magnetic field with the direction changing continuously, the evaporator 240 coated with the electromagnetic heating coating is positioned in the alternating magnetic field, heat is generated due to the electromagnetic induction effect, the whole evaporator 240 is heated, frost on the surface of the evaporator 240 is driven to melt, defrosting is realized, and hot steam generated by defrosting can be reduced from entering the compartment 101 from the air outlet due to the fact that the electromagnetic heating module 300 is positioned at a position far away from the air outlet.
It will be appreciated that the number of electromagnetic heating modules 300 may be one or more, for example, two electromagnetic heating modules 300 may be used, and two electromagnetic heating modules 300 may be disposed on opposite sides of the air duct assembly 400, or two electromagnetic heating modules 300 may be disposed on the same side of the air duct assembly 400, so that the alternating magnetic field generated by the two electromagnetic heating modules 300 is wider, which is beneficial to completely covering the evaporator 240, promoting synchronous heating of each portion of the evaporator 240, and improving defrosting efficiency.
Referring to fig. 2, in some embodiments of the second aspect of the present utility model, the case 100 is provided with a heat insulation layer 102 surrounding the compartment 101, one end of the electromagnetic heating module 300 is embedded in the heat insulation layer 102, and the other end of the electromagnetic heating module 300 extends to the air duct 401, so that an opening is provided at a side of the air duct assembly 400, a portion of the electromagnetic heating module 300 is disposed in the opening, and when the electromagnetic heating module 300 operates, an alternating magnetic field generated by the electromagnetic heating module 300 can affect the evaporator 240, and the electromagnetic heating module 300 occupies as little space of the air duct 401 as possible, thereby reducing blocking of air flow in the air duct 401 and facilitating improvement of refrigerating performance. The insulating layer 102 is typically foam-molded foam, and the air duct assembly 400 and the electromagnetic heating module 300 are fixed inside the case 100, and then foamed, and the insulating layer 102 is used to help define the electromagnetic heating module 300. In addition, during defrosting, the electromagnetic heating module 300 generates heat, and the heat insulation layer 102 is used for preventing the heat of the electromagnetic heating module 300 from leaking.
Referring to fig. 3, in other embodiments of the second aspect of the present utility model, the air duct assembly 400 includes a front cover 410 and a rear cover 420, the front cover 410 is located at a side close to the compartment, the electromagnetic heating module 300 is connected to an inner wall of the front cover 410, and an insulating layer 411 surrounding the electromagnetic heating module 300 is further disposed on the inner wall of the front cover 410, and when the magnetic heating module 300 is operated, an alternating magnetic field generated by the electromagnetic heating module 300 can affect the evaporator 240. During defrosting, the electromagnetic heating module 300 generates heat, and the heat of the electromagnetic heating module 300 is prevented from being conducted to the compartment 101 through the front cover plate 410 by the heat insulating layer 411. In addition, the front cover plate 410 may be provided with a groove to accommodate the electromagnetic heating module 300, and the electromagnetic heating module 300 does not affect the air flow in the air duct 401, so that the influence on refrigeration is reduced.
The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323480090.2U CN221992180U (en) | 2023-12-19 | 2023-12-19 | Defrosting mechanism and refrigeration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323480090.2U CN221992180U (en) | 2023-12-19 | 2023-12-19 | Defrosting mechanism and refrigeration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221992180U true CN221992180U (en) | 2024-11-12 |
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ID=93368479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323480090.2U Active CN221992180U (en) | 2023-12-19 | 2023-12-19 | Defrosting mechanism and refrigeration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221992180U (en) |
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2023
- 2023-12-19 CN CN202323480090.2U patent/CN221992180U/en active Active
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