CN117989797A - Defrosting heating device for refrigerator and refrigerator - Google Patents
Defrosting heating device for refrigerator and refrigerator Download PDFInfo
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- CN117989797A CN117989797A CN202211349590.XA CN202211349590A CN117989797A CN 117989797 A CN117989797 A CN 117989797A CN 202211349590 A CN202211349590 A CN 202211349590A CN 117989797 A CN117989797 A CN 117989797A
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- defrosting
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 256
- 238000010257 thawing Methods 0.000 title claims abstract description 135
- 238000003860 storage Methods 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000638 solvent extraction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Defrosting Systems (AREA)
Abstract
The invention relates to a defrosting heating device for a refrigerator and the refrigerator. The defrosting heating device is used for heating and defrosting a structure to be defrosted of the refrigerator and comprises a plurality of heating sections which are electrically connected in parallel, wherein the heating sections are respectively distributed in different areas of the structure to be defrosted; each heating section is configured to change its resistance value according to a change in temperature of its own environment, the resistance value of the heating section being in positive correlation with the temperature of its environment. The heating sections of the defrosting heating device are connected in parallel, so that the current flowing through the heating sections is not influenced, namely the heating power of the heating sections is not influenced, the purpose of heating defrosting in a partitioning mode is achieved, defrosting requirements of different areas of a defrosting structure are self-adaptive, and defrosting effect is improved. The invention realizes the temperature identification of the same structure to be frosted, and the identification mode does not need the support of an external circuit, thereby reducing the production cost and solving the problem of temperature difference dry combustion.
Description
Technical Field
The invention relates to a refrigeration technology, in particular to a defrosting heating device for a refrigerator and the refrigerator.
Background
The refrigerator is a storage device which utilizes a refrigerating system to provide a low-temperature environment, and components such as an evaporator or an air duct of the storage device are easy to freeze. In the prior art, a heating wire is generally adopted to defrost and deicing an evaporator or an air duct. However, due to the fact that the frosting amounts of different areas of the evaporator or the air duct are different, and the heat receiving amount is different due to the fact that the distances from the heating wire are different in the defrosting process of the different areas of the evaporator or the air duct, the defrosting conditions of the different areas of the evaporator or the air duct are inconsistent, some areas are frosted, a large amount of ice cubes or frost layers remain in some areas, the dry-heating temperature of the part where the frosting is finished is too high, the risk of fire is high, the heat of the part where the frosting is not finished is insufficient, and the frosting effect is extremely poor.
Disclosure of Invention
An object of a first aspect of the present invention is to overcome at least one of the drawbacks of the prior art by providing a defrosting heating device for a refrigerator capable of zone heating to adapt to the defrosting requirements of different areas of the structure to be defrosted.
A further object of the first aspect of the present invention is to improve the ease of assembly of the defrosting heating arrangement.
An object of a second aspect of the present invention is to provide a refrigerator having the above defrosting heating device.
According to a first aspect of the present invention, there is provided a defrosting heating device for a refrigerator, configured to heat a structure to be defrosted of the refrigerator, where the defrosting heating device includes a plurality of heating sections electrically connected in parallel, and the plurality of heating sections are configured to be distributed in different areas of the structure to be defrosted respectively; and is also provided with
Each heating section is configured to change its resistance value according to a change in temperature of an environment in which the heating section is located, and the resistance value of the heating section has a positive correlation with the temperature of the environment in which the heating section is located.
Optionally, the defrosting heating device further comprises an insulating sleeve coated outside the heating sections; and is also provided with
Each heating section extends along the length direction of the insulating sleeve, the plurality of heating sections are sequentially arranged along the length direction of the insulating sleeve, and any two adjacent heating sections are not overlapped.
Optionally, the plurality of heating sections are sequentially arranged along the length direction of the insulating sleeve according to a preset sequence;
The defrosting heating device further comprises a plurality of wires which are respectively and electrically connected with the heating sections in series, and the wires are connected in parallel step by step according to the preset sequence.
Optionally, each of the wires has a leading end and a trailing end in the preset order, and each of the heating sections has a leading end and a trailing end in the preset order;
The starting end of each wire except the wire of the first stage is connected with the position of the wire of the upper stage adjacent to the starting end of the heating section connected in series;
the tail end of each wire except the wire at the last stage is connected with the wire at the next stage of the wire at a position adjacent to the tail end of the heating section connected in series.
Optionally, the plurality of heating sections are contacted end to end in sequence along the length direction of the insulating sleeve.
Optionally, the defrosting heating device further comprises an aluminum pipe sleeved outside the insulating sleeve.
Optionally, the defrosting heating devices are distributed on the structure to be defrosted in a roundabout way, and
The insulating sleeve is a sleeve body made of silica gel materials.
Optionally, the heating section is a heating wire made of NTC material.
According to a second aspect of the present invention, there is further provided a refrigerator, including the defrosting heating device according to any one of the above schemes, so as to heat and defrost a structure to be defrosted of the refrigerator by using the defrosting heating device.
Optionally, the refrigerator further includes:
A case defining an evaporator chamber and a storage compartment for storing articles therein;
The structure to be defrosted is an evaporator for providing cold energy for the storage compartment; and is also provided with
The plurality of heating sections of the defrosting heating device are uniformly distributed on the evaporator so as to heat and defrost each area of the evaporator respectively.
Optionally, the evaporator comprises a plurality of heat exchange fins arranged at intervals; and is also provided with
And the outer side of each heat exchange fin is provided with a clamping groove, and the defrosting heating device is clamped in the clamping grooves of the plurality of heat exchange fins.
Optionally, the evaporator is disposed horizontally or obliquely within the evaporator chamber.
Optionally, the evaporator chamber is formed at the bottom of the case and is located below the storage compartment.
The defrosting heating device for the refrigerator comprises a plurality of heating sections which are electrically connected in parallel, wherein the heating sections are respectively distributed in different areas of a structure to be defrosted so as to respectively perform zone heating on the different areas of the structure to be defrosted, and therefore the aim of zone defrosting is achieved. And each heating section can change the resistance value according to the temperature change of the environment where the heating section is positioned, and the higher the environment temperature is, the larger the resistance value of the heating section is. When a certain area of the structure to be defrosted distributed by a certain heating section is defrosted, the temperature of the area is increased, so that the resistance value of the heating section is automatically increased, the current flowing through the heating section is reduced, the heating power of the heating section is reduced, the dry burning phenomenon of the area after defrosting is avoided, and the potential safety hazard is reduced. Meanwhile, when the other area of the structure to be defrosted distributed by the other heating section is not defrosted, the temperature of the other area is still low, so that the resistance value of the other heating section is still kept small, the current flowing through the other heating section is kept large, the other heating section is ensured to have higher heating power, and the defrosting effect is improved. Because each heating section of defrosting heating device is parallel connection, consequently, the electric current size that flows through each heating section does not influence each other, and the heating power of each heating section does not influence each other promptly, has realized the purpose of subregion heating defrosting, has self-adaptation and has waited the defrosting demand in different regions of defrosting structure, has improved the defrosting effect.
Further, in order to improve the effect of heating defrosting in the subarea, the number of heating sections of the defrosting heating device should be as large as possible. However, the inventors have realized that if the individual heating sections are connected in parallel in a common manner, the larger the number of heating sections, the larger the diameter of the defrosting heating arrangement, which affects the assembly and arrangement of the defrosting heating arrangement, even resulting in that the defrosting heating arrangement cannot be assembled at all to the corresponding location of the structure to be defrosted. Therefore, the plurality of wires respectively connected with the plurality of heating sections in series are connected in parallel step by step according to the preset sequence, and the plurality of wires can be sequentially staggered and overlapped on the physical structure, so that the number of the wires overlapped at the same position is reduced, the radial dimension of the defrosting heating device is limited, the problem that the defrosting heating device is unlimited and thickened is avoided, and the assembly convenience of the defrosting heating device is improved.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic structural view of a defrosting heating device for a refrigerator according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a defrosting heating device according to one embodiment of the present invention;
Fig. 3 is a schematic cross-sectional view of a refrigerator according to an embodiment of the present invention;
FIG. 4 is a schematic block diagram of an evaporator according to one embodiment of the invention;
Fig. 5 is a schematic enlarged view of a part of the structure of an evaporator according to an embodiment of the invention.
Detailed Description
The invention firstly provides a defrosting heating device for a refrigerator, which is used for heating and defrosting a structure to be defrosted of the refrigerator. Specifically, the structure to be frosted of the refrigerator can be any structure which can generate frosting in the refrigerator. For example, the structure to be frosted of the refrigerator can be an evaporator, an air duct and the like.
Fig. 1 is a schematic structural view of a defrosting heating device for a refrigerator according to an embodiment of the present invention. Referring to fig. 1, the defrosting heating device 20 of the present invention includes a plurality of heating sections 21 electrically connected in parallel, where the plurality of heating sections 21 are respectively distributed in different areas of a structure to be defrosted of a refrigerator, so as to respectively perform zone heating on the different areas of the structure to be defrosted, thereby achieving the purpose of zone defrosting.
Further, each heating section 21 is configured to change its resistance value according to a change in temperature of its own environment, the resistance value of the heating section 21 being in positive correlation with the temperature of its environment. That is, the higher the ambient temperature at which the heating section 21 is located, the greater its resistance value; the lower the ambient temperature at which the heating section 21 is located, the smaller its resistance value. Since the heating section 21 is distributed over the structure to be frosted, the ambient temperature where the heating section 21 is located may be the temperature of the region of the structure to be frosted where the heating section 21 is located.
It will be appreciated that the degree of frosting or icing varies from region to region of the structure to be frosted and therefore the progress of frosting varies from region to region. Accordingly, the temperatures of the different regions thereof are also different.
When the defrosting structure starts to defrost, a relay connected in series with the defrosting heating device 20 is closed to electrify the defrosting heating device 20. At this time, the respective heating sections of the defrosting heating device 20 are simultaneously operated at full load. When a certain area of the structure to be defrosted distributed by a certain heating section 21 approaches to the defrosting tail sound or the defrosting is finished, the temperature of the area is higher, so that the resistance value of the heating section 21 is automatically increased, the current flowing through the heating section 21 is reduced, the heating power of the heating section 21 is reduced, the dry burning phenomenon of the area after defrosting is not caused, and the potential safety hazard is reduced.
Meanwhile, when another area of the structure to be frosted distributed by the other heating section 21 still has thicker frost, the temperature of the other area is still low, so that the resistance value of the other heating section 21 still remains small, and the current flowing through the other heating section 21 remains large, so that the other heating section 21 has higher heating power, and high-efficiency defrosting can be continuously performed on the other area, and the defrosting effect is improved.
Because each heating section 21 of defrosting heating device 20 is connected in parallel, the magnitude of the current flowing through each heating section 21 is not influenced, namely, the heating power of each heating section 21 is not influenced, the purpose of heating defrosting in a partitioning way is realized, the defrosting demands of different areas of a structure to be defrosted are self-adaptive, the accurate heating is realized, and the defrosting effect is improved.
The defrosting heating device 20 can realize the temperature identification of the same structure to be defrosted so as to perform local heating, and the identification mode does not need external circuit support, and utilizes the self characteristic of the heating section 21 as a temperature sensor to perform heating at the same time, thereby reducing the production cost and solving the problem of temperature difference dry combustion.
In some embodiments, the heating section 21 may be a heating wire made of NTC material. NTC is a self-adaptive temperature sensitive material, the resistance value of which can be changed along with the change of temperature, and the trend of the resistance value along with the change of temperature accords with the requirements of the invention, and the invention has lower cost and reliable performance.
Fig. 2 is a schematic cross-sectional view of a defrosting heating device according to an embodiment of the present invention. Referring to fig. 2, in some embodiments, the defrosting heating device 20 further includes an insulating jacket 22 wrapped around the plurality of heating sections 21 to further enhance the safety performance of the defrosting heating device 20. And, the insulating sleeve 22 is sleeved with the plurality of heating sections 21, so that the plurality of heating sections 21 form a whole, and the defrosting heating device 20 is tidier and convenient to assemble.
Further, each heating section 21 extends along the length direction of the insulating sleeve 22, the plurality of heating sections 21 are sequentially arranged along the length direction of the insulating sleeve 22, and any two adjacent heating sections 21 are not overlapped, so that any two adjacent areas of the structure to be frosted, which correspond to the heating sections 21, are not overlapped, the corresponding relation between the heating sections 21 and the areas of the structure to be frosted is clearer and more definite, and the heating power of the heating sections 21 can be conveniently and uniquely confirmed.
In a specific embodiment, the plurality of heating sections 21 are in contact end-to-end sequence along the length of the insulating sleeve 22. That is, two adjacent heating sections 21 may be immediately contiguous.
In another specific embodiment, the plurality of heating sections 21 are sequentially spaced apart along the length of the insulating jacket 22. That is, two adjacent heating sections 21 may also be separated by a small distance. The distance between two adjacent heating sections 21 is not easily too large, so as to avoid the problem that the partial area of the structure to be frosted cannot effectively receive heat and cannot be frosted.
In some embodiments, the plurality of heating sections 21 are sequentially arranged along the length direction of the insulation jacket 22 in a predetermined order. The defrosting heating device 20 further includes a plurality of wires 24 electrically connected in series with the plurality of heating sections 21, respectively. That is, each heating section 21 is connected in series in a corresponding one of the wires 24, and the plurality of wires 24 to which the plurality of heating sections 21 are connected in series are electrically connected in parallel.
The inventors have realized that in order to increase the effectiveness of the zone heating defrosting, it is necessary to finely divide the area of the structure to be defrosted, and therefore the number of heating sections 21 of the defrosting heating device 20 should correspondingly be as large as possible. However, the inventors have further realized that if the individual heating sections 21 are connected in parallel in a common manner, the larger the number of heating sections 21, the thicker the defrosting heating arrangement 20, which, when the defrosting heating arrangement 20 is sufficiently thick, can affect the assembly and arrangement of the defrosting heating arrangement 20, even resulting in that the defrosting heating arrangement 20 cannot be assembled at all to the corresponding location of the structure to be defrosted.
For this purpose, the present invention connects a plurality of wires 24 respectively connected in series with a plurality of heating sections in parallel step by step in a predetermined order. Therefore, the plurality of wires 24 can be sequentially staggered and overlapped in physical structure, the number of wires overlapped at the same position is reduced, the radial dimension of the defrosting heating device 20 is limited, the problem that the defrosting heating device 20 is unlimited and thickened is avoided, and the assembly convenience of the defrosting heating device 20 is improved.
In some embodiments, each wire 24 has a leading end 241 and a trailing end 242 that precede in the predetermined order, and each heating segment 21 has a leading end 211 and a trailing end 212 that precede in the predetermined order. The start 241 of each wire 24 except the first stage wire 24 is connected to the wire 24 at the previous stage adjacent to the start of the heating section 21 to which it is connected. That is, the start 241 of each wire 24 except the first-stage wire 24 is adjacent to the start of the heating section 21 to which the wire 24 at the previous stage is connected in series. The end of each wire 24 except the wire 24 of the last stage is connected to the wire 24 of the next stage of the wire 21 at a position adjacent to the end of the heating section 21 to which it is connected in series. That is, the end of each of the wires 24 except the wire 24 of the last stage is adjacent to the end of the heating section 21 to which the wire 24 of the next stage of the wire 21 is connected in series. Thereby, the lengths of the wires 24 and/or the heating sections 21 overlapped at the same overlapped position can be shortened as much as possible, thereby reducing the size of the defrosting heating device 20 in the radial direction as much as possible.
In some embodiments, the defrosting heating devices 20 are distributed roundabout on the structure to be defrosted to improve the uniformity of the distribution of the defrosting heating devices 20. Specifically, the defrosting heating device 20 may extend in a serpentine configuration, or may extend in a serpentine manner.
Further, since the defrosting heating device 20 has more bending or bending positions, and the step-by-step parallel connection of the plurality of wires 24 connected in series with each heating section 21 also causes the overall external unevenness formed by the plurality of heating sections 21 and the plurality of wires 24, there is a high requirement on the flexibility of the material of the insulating sleeve 22 sleeved outside the plurality of heating sections 21 and the plurality of wires 24.
For this purpose, the insulating sleeve 22 of the present invention is preferably a sleeve body made of silica gel material. The silica gel material is soft and tough, and can not break even after being bent or bent for many times. In addition, the silica gel is an insulating material with high temperature resistance, low temperature resistance, wear resistance and oxidation resistance, is very suitable for defrosting and heating device 20, can adapt to the environment with lower temperature such as an evaporator, an air duct and the like during non-defrosting, can adapt to the high temperature environment generated by heating section 21 during defrosting, and has longer service life.
The inventors have recognized that the defrost heating device 20 is typically used to defrost an evaporator, which is typically aluminum. To this end, in some embodiments, the defrosting heating device 20 further includes an aluminum tube 23 sleeved outside the insulating sleeve 22. The aluminum pipe 23 has good heat conduction performance, can quickly and efficiently conduct heat generated by the heating section 21 to a structure to be frosted, and the aluminum pipe 23 can be directly contacted with an aluminum evaporator, so that the insulating sleeve 22 is protected from being cut by fins of the evaporator. In addition, because the evaporator and the aluminum tube are made of aluminum, electrochemical corrosion can not occur, and the service lives of the evaporator and the defrosting heating device 20 are longer.
The present invention also provides a refrigerator, fig. 3 is a schematic cross-sectional view of the refrigerator according to an embodiment of the present invention, and fig. 4 is a schematic structural view of an evaporator according to an embodiment of the present invention. The refrigerator 1 includes the defrosting heating device 20 described in any of the above embodiments to heat defrosting of a structure to be defrosted of the refrigerator 1 using the defrosting heating device 20.
Because each heating section 21 of defrosting heating device 20 is connected in parallel, the magnitude of the current flowing through each heating section 21 is not influenced, namely, the heating power of each heating section 21 is not influenced, the purpose of heating defrosting in a partitioning way is realized, the defrosting demands of different areas of a structure to be defrosted are self-adaptive, the accurate heating is realized, and the defrosting effect is improved. The defrosting heating device 20 can realize the temperature identification of the same structure to be defrosted so as to perform local heating, and the identification mode does not need external circuit support, and utilizes the self characteristic of the heating section 21 as a temperature sensor to perform heating at the same time, thereby reducing the production cost and solving the problem of temperature difference dry combustion.
In some embodiments, the refrigerator 1 further includes a case 10, and an evaporator chamber 12 and a storage compartment 11 for storing articles are defined in the case 10. The above-mentioned structure to be frosted is an evaporator 30 for providing cold for the storage compartment 11. The plurality of heating sections 21 of the defrosting heating device 20 are uniformly distributed on the evaporator 30 to heat and defrost the respective areas of the evaporator 30, respectively.
Unlike the conventional defrosting heating device which is usually arranged at the bottom of the evaporator 30 in the prior art, the defrosting heating device 20 is directly arranged on the evaporator 30, and the plurality of heating sections 21 of the defrosting heating device are uniformly distributed on the evaporator 30, so that the defrosting heating device can accurately heat the evaporator according to the actual conditions of different areas of the evaporator 30, can avoid the dry heating condition of local areas, thoroughly and effectively defrost all areas of the evaporator 30, and improves the defrosting effect of the evaporator 30.
Fig. 5 is a schematic enlarged view of a part of the structure of an evaporator according to an embodiment of the invention. In some embodiments, the evaporator 30 includes a plurality of heat exchange fins 31 disposed at intervals. The outside of each heat exchange fin 31 is provided with a clamping groove 311, and the defrosting heating device 20 is clamped in the clamping grooves 311 of the plurality of heat exchange fins 31. According to the invention, the clamping grooves 311 are designed on the heat exchange fins 31, and the defrosting heating device 20 is supported by the heat exchange fins 311, so that the assembly of the defrosting heating device 20 is simplified, and heat can be efficiently transferred to the heat exchange fins 311.
Specifically, the opening size of the clamping groove 311 may be smaller than the outer diameter of the defrosting heating device 20, so that the defrosting heating device 20 is deformed to a certain extent and then is arranged in the clamping groove 311, and the clamping connection is firmer.
In particular, the defrosting heating device 20 may extend on the evaporator 30 in a serpentine shape.
In some embodiments, the evaporator 30 is disposed horizontally or obliquely within the evaporator chamber 12. That is, the defrosting heating device 20 of the present invention is more suitable for heating defrosting of the evaporator 30 placed horizontally or obliquely. This is because the evaporator 30 placed horizontally or obliquely performs defrosting in a manner of uniformly distributing the defrosting heating device thereon in the related art, and thus, the dry burning phenomenon, and the defrosting incomplete phenomenon are more prominent and obvious.
In some embodiments, an evaporator chamber 12 is formed at the bottom of the housing 10 and below the storage compartment 11. That is, the evaporator 30 is bottomed in the case 10. When the evaporator 30 is bottomed in the case 10, the evaporator 30 is generally placed horizontally in the evaporator chamber 12 or is placed slightly inclined in the evaporator chamber 12 with a small angle to the horizontal.
In some embodiments, the number of storage compartments 11 may be one or more, and the storage compartments 11 are above the evaporator chamber 12.
In some embodiments, the number of defrosting heating devices 20 may be one or more, and the plurality of defrosting heating devices 20 are uniformly distributed on the structure to be defrosted.
It should be understood by those skilled in the art that the above-described embodiments are only a part of embodiments of the present invention, and not all embodiments of the present invention, and the part of embodiments is intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive effort, based on the embodiments provided by the present invention, shall still fall within the scope of protection of the present invention.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Further, it should also be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.
Claims (13)
1. A defrosting heating device for a refrigerator is used for heating and defrosting a structure to be defrosted of the refrigerator and is characterized in that,
The defrosting heating device comprises a plurality of heating sections which are electrically connected in parallel, and the heating sections are respectively distributed in different areas of the structure to be defrosted; and is also provided with
Each heating section is configured to change its resistance value according to a change in temperature of an environment in which the heating section is located, and the resistance value of the heating section has a positive correlation with the temperature of the environment in which the heating section is located.
2. The defrosting heating device as claimed in claim 1, wherein,
The defrosting heating device further comprises an insulating sleeve coated outside the heating sections; and is also provided with
Each heating section extends along the length direction of the insulating sleeve, the plurality of heating sections are sequentially arranged along the length direction of the insulating sleeve, and any two adjacent heating sections are not overlapped.
3. The defrosting heating device as claimed in claim 2, wherein,
The heating sections are sequentially arranged along the length direction of the insulating sleeve according to a preset sequence;
The defrosting heating device further comprises a plurality of wires which are respectively and electrically connected with the heating sections in series, and the wires are connected in parallel step by step according to the preset sequence.
4. A defrosting heating arrangement as claimed in claim 3, characterized in that,
Each of the wires has a leading end and a trailing end in the predetermined order, and each of the heating sections has a leading end and a trailing end in the predetermined order;
The starting end of each wire except the wire of the first stage is connected with the position of the wire of the upper stage adjacent to the starting end of the heating section connected in series;
the tail end of each wire except the wire at the last stage is connected with the wire at the next stage of the wire at a position adjacent to the tail end of the heating section connected in series.
5. The defrosting heating device as claimed in claim 2, wherein,
The heating sections are contacted with each other from beginning to end in sequence along the length direction of the insulating sleeve.
6. The defrosting heating device as claimed in claim 2, wherein,
The defrosting heating device further comprises an aluminum pipe sleeved outside the insulating sleeve.
7. The defrosting heating device as claimed in claim 2, wherein,
The defrosting heating devices are distributed on the structure to be defrosted in a roundabout way, and
The insulating sleeve is a sleeve body made of silica gel materials.
8. The defrosting heating device as claimed in claim 2, wherein,
The heating section is a heating wire made of NTC material.
9. A refrigerator, characterized by comprising the defrosting heating device according to any one of claims 1 to 8 to heat defrosting of a structure to be defrosted of the refrigerator by using the defrosting heating device.
10. The refrigerator of claim 9, further comprising:
A case defining an evaporator chamber and a storage compartment for storing articles therein;
The structure to be defrosted is an evaporator for providing cold energy for the storage compartment; and is also provided with
The plurality of heating sections of the defrosting heating device are uniformly distributed on the evaporator so as to heat and defrost each area of the evaporator respectively.
11. The refrigerator as claimed in claim 10, wherein,
The evaporator comprises a plurality of heat exchange fins which are arranged at intervals; and is also provided with
And the outer side of each heat exchange fin is provided with a clamping groove, and the defrosting heating device is clamped in the clamping grooves of the plurality of heat exchange fins.
12. The refrigerator as claimed in claim 10, wherein,
The evaporator is disposed horizontally or obliquely within the evaporator chamber.
13. The refrigerator as claimed in claim 10, wherein,
The evaporator chamber is formed at the bottom of the box body and is positioned below the storage compartment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211349590.XA CN117989797A (en) | 2022-10-31 | 2022-10-31 | Defrosting heating device for refrigerator and refrigerator |
| PCT/CN2023/126759 WO2024093781A1 (en) | 2022-10-31 | 2023-10-26 | Defrosting heating device for refrigerator, and refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211349590.XA CN117989797A (en) | 2022-10-31 | 2022-10-31 | Defrosting heating device for refrigerator and refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117989797A true CN117989797A (en) | 2024-05-07 |
Family
ID=90886055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211349590.XA Pending CN117989797A (en) | 2022-10-31 | 2022-10-31 | Defrosting heating device for refrigerator and refrigerator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN117989797A (en) |
| WO (1) | WO2024093781A1 (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54101533A (en) * | 1978-01-27 | 1979-08-10 | Hitachi Ltd | Defrosting control device |
| ITVE20010033A1 (en) * | 2001-07-17 | 2003-01-17 | Alper Srl | DEVICE FOR QUICK DEFROSTING OF EVAPORATORS |
| KR100555802B1 (en) * | 2002-11-04 | 2006-03-03 | 엘지전자 주식회사 | Defrosting heat for refrigerator |
| CN201563254U (en) * | 2009-11-06 | 2010-08-25 | 镇江东方电热科技股份有限公司 | Aluminium tube defrosting electric heater |
| DE202013007659U1 (en) * | 2013-08-29 | 2014-12-01 | Nordex Energy Gmbh | Wind turbine rotor blade with an electric heating element |
| CN107255387B (en) * | 2017-06-29 | 2019-12-06 | 青岛海尔股份有限公司 | defrosting method for refrigerator |
| JP6955399B2 (en) * | 2017-08-30 | 2021-10-27 | シャープ株式会社 | Defroster |
| CN207600049U (en) * | 2017-12-06 | 2018-07-10 | Tcl家用电器（合肥）有限公司 | Defrosting device and refrigerator |
| CN209893753U (en) * | 2019-02-26 | 2020-01-03 | 青岛海尔电冰箱有限公司 | Refrigerator with heating wire arranged in middle of evaporator |
-
2022
- 2022-10-31 CN CN202211349590.XA patent/CN117989797A/en active Pending
-
2023
- 2023-10-26 WO PCT/CN2023/126759 patent/WO2024093781A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024093781A1 (en) | 2024-05-10 |
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