CN113228823B - Heating element with fusing function and heating unit comprising same - Google Patents

Heating element with fusing function and heating unit comprising same Download PDF

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Publication number
CN113228823B
CN113228823B CN202080007694.5A CN202080007694A CN113228823B CN 113228823 B CN113228823 B CN 113228823B CN 202080007694 A CN202080007694 A CN 202080007694A CN 113228823 B CN113228823 B CN 113228823B
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China
Prior art keywords
fusing
heating element
heat sources
heat
heating
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CN202080007694.5A
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Chinese (zh)
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CN113228823A (en
Inventor
金廷桓
罗元蒜
朴晋杓
李宰英
林贤哲
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Amogreentech Co Ltd
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Amogreentech Co Ltd
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Publication date
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Priority claimed from PCT/KR2020/000921 external-priority patent/WO2020153684A2/en
Publication of CN113228823A publication Critical patent/CN113228823A/en
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Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202Switches
    • H05B1/0205Switches using a fusible material
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227Applications
    • H05B1/023Industrial applications
    • H05B1/0236Industrial applications for vehicles
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02Heaters using heating elements having a positive temperature coefficient

Landscapes

  • Air-Conditioning For Vehicles (AREA)
  • Fuses (AREA)

Abstract

The invention provides a heating element with a fusing function. A heating element having a fusing function according to an exemplary embodiment of the present invention includes: a plurality of heat sources that generate heat when a current is applied; a fusing member having both end portions physically connected to two heat sources arranged at a distance from each other to connect the two heat sources in series, and fusing the two heat sources at a set temperature or higher to cut off the electrical connection of the two heat sources; and an insulating member wrapping the plurality of heat sources and the fusing member.

Description

Heating element with fusing function and heating unit comprising same
Technical Field
The present invention relates to a heating element, and more particularly, to a heating element having a fusing function and a heating unit including the same.
Background
Heaters using common nichrome wires have a concern of fire when overheated. Accordingly, the electric vehicle is provided with a heating unit using the PTC element for heating.
However, the heating unit using the PTC element as the heating element has a limitation in enlarging the size of the PTC element, and thus cannot generate a large amount of heat.
In addition, in the heating unit using the PTC element, since the conductive carbon mixture as the electric conductor is bonded to only a part of the heating surface of the PTC element, there is a problem in that temperature distribution is uneven according to the electric conductor portion and the temperature transmitted to the heat sink is different.
Accordingly, development of a heating element and a heating unit that can generate a large amount of heat while forming a uniform temperature distribution is being demanded.
In addition, since such a heating unit using the PTC element heats air in contact with the heat sink by transferring heat generated in the heating element to the heat sink, there is a structural problem in that thermal resistance is generated in the process of transferring heat from the heating element to the heat sink, and the heat density is greatly reduced.
Disclosure of Invention
(problems to be solved)
The present invention has been made in view of the above-described points, and an object of the present invention is to provide a heating element having a fusing function and a heating unit including the same, which can reduce thermal resistance to improve heat density and prevent ignition due to overheat that may occur during heating.
Further, another object of the present invention is to provide a heating element having a fusing function, which can obtain a uniform temperature distribution and can secure a large amount of heat generation, and a heating unit including the same.
(means for solving the problems)
In order to achieve the above object, the present invention provides a heating element having a fusing function, comprising: a plurality of heat sources that generate heat when a current is applied; a fusing member having both end portions physically connected to two heat sources arranged at a distance from each other to connect the two heat sources in series, and fusing the two heat sources at a set temperature or higher to cut off the electrical connection of the two heat sources; and an insulating member wrapping the plurality of heat sources and the fusing member.
In addition, the heat source may be a plate-shaped conductive member having a predetermined area. As an example, the heat source may be a plate-shaped gasket including at least one of amorphous ribbon, metal sheet, iron-chromium-aluminum alloy, and iron-carbon alloy.
In addition, the fusing part may be a plate-shaped conductive part having a predetermined area. As an example, the fuse member may be composed of lead, tin, zinc, cadmium, copper, and one or more metal materials combining these with each other.
The fuse member may be connected to upper or lower surfaces of two heat sources disposed at a distance from each other at both end sides thereof.
In addition, the fusing part may include: the first fusing part, two end sides are connected to the upper surfaces of two heat sources which are arranged at intervals; and a second fuse member having both end portions connected to lower surfaces of the two heat sources arranged at a distance from each other. At this time, at least a portion of the first and second fuse members may be in contact between the first and second heat sources of the two.
The insulating member may be a film member having insulating properties.
In addition, the heating element may be bent a plurality of times along the length direction to form a flow path through which the fluid passes. In this case, the heating element may be bent a plurality of times to alternately form the peak portions and the valley portions along the longitudinal direction, and the flow passage may be a space formed by the peak portions and the valley portions.
In addition, the heating element may further include a metal sheet attached to one side of the insulating member through an adhesive layer.
The invention provides a heating unit comprising the heating element with the fusing function.
(effects of the invention)
In the present invention, since the heating element itself has a fusing function, when a plurality of heat sources generating heat at a set temperature or higher generate heat, the heat is fused, and the flow of current is cut off, so that a fire phenomenon due to overheating can be prevented. Accordingly, even if a controller failure occurs, the heater itself can be protected.
In addition, the heating element is realized in a shape of a surface, so that the thermal resistance is reduced, the heating efficiency is improved, and the reactivity is improved.
Drawings
FIG. 1 is a schematic diagram showing a heating element with a fusing function according to an embodiment of the present invention;
FIG. 2 is a view from the front of FIG. 1;
fig. 3 is a view showing a state in which a heating element having a fusing function according to an embodiment of the present invention is unfolded;
FIG. 4 is a view showing the connection relationship between two heat sources and a fuse member as a sectional view in the direction A-A of FIG. 3;
FIG. 5 is a view showing another mode of connection relationship between two heat sources and a fuse member as a sectional view in the direction A-A of FIG. 3;
FIG. 6 is a view showing another mode of connection between two heat sources and a fuse member as a sectional view in the direction A-A in FIG. 3;
fig. 7 is a view showing a state in which a metal sheet is applied to the outside of the insulating member in fig. 4; a kind of electronic device with high-pressure air-conditioning system
Fig. 8 is an exemplary diagram showing a case where a heating element having a fusing function of an embodiment of the present invention is implemented as a heater.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those having ordinary skill in the art to which the present invention pertains can easily implement the present invention. The present invention may be realized in various forms and is not limited to the embodiments described herein. For the purpose of clearly explaining the present invention, parts irrelevant to the explanation are omitted in the drawings, and the same or similar constituent elements are given the same reference numerals throughout the specification.
As shown in fig. 1 to 7, a heating element 100, 200 with a fusing function according to an embodiment of the present invention includes: a plurality of heat sources 110, fusing members 120, 120', 120″ and insulating members 130.
The plurality of heat sources 110 generate heat when power is applied, and thus may generate heat. As shown in fig. 4 to 7, such a plurality of heat sources 110 may be arranged at intervals along the length direction of the heat generating elements 100, 200, and may be electrically connected to each other through the fusing parts 120, 120', 120″.
That is, the plurality of heat sources 110 may be arranged at intervals along the longitudinal direction of the heat generating elements 100 and 200, and two heat sources 110 arranged at intervals along the longitudinal direction may be connected in series through the fuse members 120, 120', 120″.
Accordingly, when a power is externally applied, the plurality of heat sources 110 are electrically connected to each other through the fuse members 120, 120', 120″, and thus heat can be generated.
At this time, the plurality of heat sources 110 may be configured in a plate shape having a predetermined area. That is, the heat source 110 may be a plate-shaped conductive member that generates heat when power is applied.
As a non-limiting example, the heat source 110 may use amorphous ribbons. Here, the amorphous ribbon may be a ribbon including at least one of an amorphous alloy and a nanocrystalline alloy. In addition, the heat source 110 may be a plate-shaped metal plate having a predetermined area, and aluminum, copper, or the like may be used as the metal plate.
The heat source 110 may be a plate-shaped conductive member including at least one of an iron-chromium-aluminum alloy and an iron-carbon alloy, so as to prevent crystallization due to repeated exposure to thermal fatigue.
However, the material of the heat source 110 is not limited thereto, and the linear conductive members may be arranged in a predetermined pattern to achieve a plate shape or a plane shape, and all known heat sources used as heaters may be applied as long as the heat source can achieve a plane shape or a plate shape.
Here, the plurality of heat sources 110 constituting the heat generating elements 100 and 200 may be arranged to have the same area as each other or may be arranged to have different areas from each other.
Accordingly, the heat generating element 100, 200 having a fusing function according to an embodiment of the present invention may be implemented as a plane-shaped heat generating element in which a plurality of heat sources 110 having a predetermined area are electrically connected to each other through the fusing parts 120, 120', 120″.
Therefore, the heat generating elements 100 and 200 with fusing function according to an embodiment of the present invention can generate heat at the same time by the heat source 110 having a predetermined area when power is applied, and thus the heat generating area can be increased, and the heat exchange area with air can be enlarged by the increased heat generating area, so that the reactivity can be improved.
In addition, the heating elements 100 and 200 having the fusing function according to the embodiment of the present invention can generate heat in a predetermined area in each heat source 110, and thus can achieve a uniform heating temperature regardless of the position even if the entire length is increased.
The fusing parts 120, 120', 120″ may physically connect the two heat sources 110 disposed at a distance from each other along the longitudinal direction of the heating elements 100, 200. Accordingly, as described above, the fuse members 120, 120', 120″ may connect two heat sources 110 in series.
In this case, the fusing members 120, 120', 120″ are fused when the plurality of heat sources 110 generating heat generate heat at a temperature equal to or higher than a set temperature during the power supply, and thus the plurality of heat sources 110 can be prevented from flowing current.
Accordingly, the heating element 100, 200 with a fusing function according to an embodiment of the present invention is to realize a current cutting function by the fusing part 120, 120', 120″ itself, so that it is possible to prevent ignition due to overheating.
Further, since the heating elements 100 and 200 having the fusing function according to the embodiment of the present invention have the current interruption function built therein, even if an external controller such as a heater controller is failed, the fuse members 120, 120', 120″ can activate the self-protection function, thereby improving the stability.
Here, when the plurality of heat sources 110 connected in series generate heat at a high temperature equal to or higher than a set value, the fuse members 120, 120', 120″ are fused by heat transmitted from the heat sources 110, and thus the current can be cut off.
As an example, the fuse parts 120, 120', 120″ may be composed of lead, copper, tin, zinc, cadmium, and one or more metal materials combining these with each other. However, the material of the fuse parts 120, 120', 120″ is not limited thereto, but all known materials that can be used as fuses may be applicable.
The fuse members 120, 120', 120″ may be arranged in a linear shape having a predetermined length, but may be arranged in a plate shape having a predetermined area in the same manner as the heat source 110 so that the possibility of breakage due to external force may be reduced.
Such fuse components 120, 120', 120″ can physically connect two heat sources 110 disposed at a spaced apart distance from each other in various ways.
As an example, the fuse parts 120, 120', 120″ may be connected to two heat sources 110 in series by means of fig. 4 to 6.
Specifically, the fuse member 120 may connect the same surfaces of two heat sources 110 arranged at a distance from each other. That is, as shown in fig. 4, the fuse member 120 may be connected to upper surfaces of two heat sources 110 disposed at a distance from each other. In addition, the fusing parts 120 may be respectively connected to lower surfaces of the two heat sources 110 disposed at a spaced apart distance from each other.
As another example, as shown in fig. 5 and 6, the fusing parts 120', 120″ may include first fusing parts 121, 121' and second fusing parts 122, 122'. In this case, the first fusing parts 121 and 121 'may be connected to upper surfaces of the two heat sources 110 disposed at a spaced interval, respectively, and the second fusing parts 122 and 122' may be connected to lower surfaces of the two heat sources 110 disposed at a spaced interval, respectively.
Accordingly, even if one of the first fusing part 121, 121 'and the second fusing part 122, 122' is physically separated from the two heat sources 110, the other fusing part can be maintained in a physically connected state with the two heat sources 110. Accordingly, the electrical stability between the plurality of heat sources 110 electrically connected through the fusing parts 120', 120″ can be improved.
In this case, as shown in fig. 5, the first fusing parts 121 and 121 'and the second fusing parts 122 and 122' may be disposed so as not to contact each other between the two heat sources 110, or at least partially contact each other between the two heat sources 110 as shown in fig. 6.
However, the connection between the fusing members 120, 120', 120″ and the heat sources 110 is not limited thereto, and may be appropriately changed as long as the two heat sources 110 are physically connected to each other and are fused at a temperature equal to or higher than a set temperature.
The insulating member 130 may be configured to wrap a plurality of heat sources 110 aligned in a line at intervals in a length direction and fuse members 120, 120', 120 "connecting two heat sources 110 in series.
That is, the insulating member 130 may prevent the heat source 110 and the fusing members 120, 120', 120″ as the conductive members from being exposed to the outside.
Accordingly, the insulating member 130 can prevent the heat source 110 and the fusing parts 120, 120', 120″ from being shorted by contact when they are in contact with other parts.
Here, the heating element 100, 200 having a fusing function according to an embodiment of the present invention may be provided with a pair of terminal members 141, 142 at both end portions for applying a power supplied from the outside to the heat source 110 side, and the pair of terminal members 141, 142 may be connected to the heat source 110 at one end and may expose at least a part of the length to the outside.
As an example, the insulating member 130 may include: a first insulating member 131 covering the heat source 110 and the upper surfaces of the fuse members 120, 120', 120″; a second insulating member 132 covering the heat source 110 and the lower surfaces of the fuse members 120, 120', 120″; the first insulating member 131 and the second insulating member 132 may be attached by an adhesive layer.
Further, the insulating member 130 may be configured to cover a plurality of heat sources 110 and one or more fuse members 120, 120', 120 "at the same time.
However, the insulating member 130 is not limited thereto, but may be formed of one member.
On the other hand, the insulating member 130 may have insulation to perform electrical insulation, and may also have heat resistance together to prevent damage due to heat generated at the heat source 110.
As an example, the insulating member 130 may be a film member made of a resin material having insulation and heat resistance. As a non-limiting example, the insulating member 130 may be a known Polyimide (PI) film, but is not limited thereto, and may be any material having insulating properties and heat resistance.
The insulating member 130 may be formed of a coating layer to which a coating liquid having insulating properties and heat resistance is applied, or may be formed by combining a coating layer and a thin film member.
On the other hand, as shown in fig. 7, the heating element 200 with a fusing function according to an embodiment of the present invention may further include a metal sheet 150, and the metal sheet 150 is attached to one side of the insulating member 130 through an adhesive layer.
The metal sheet 150 may be a pad having a plate shape with a predetermined area, and may be disposed on at least one surface of the insulating member 130 covering the heat source 110 and the fusing parts 120, 120', 120″ so that an exposed surface exposed to the outside may be formed on the heat generating element 200.
Accordingly, the metal sheet 150 protects the heat source 110 from an external force, can maintain the shape of the heat source 110, and can rapidly disperse heat generated from the heat source 110.
As an example, copper, aluminum, or the like having excellent heat conductivity can be used as the material of the metal sheet 150. However, the material of the metal sheet 150 is not limited thereto, and any material having excellent thermal conductivity may be used without limitation.
Further, the heating element 200 with a fusing function according to an embodiment of the present invention includes the metal sheet 150 described above, and in the case where the metal sheet 150 is formed with an exposed surface exposed to the outside, the metal sheet 150 may be a hollow tube having a hollow inside. In this case, the plurality of heat sources 110, the fusing members 120, 120', 120″ and the insulating member 130 may be formed to be inserted into the hollow tube, and the hollow tube may be formed in a plate shape by pressurization.
The metal sheet 150 is shown in the drawings as being provided to the heating element shown in fig. 4, but the present invention is not limited thereto, but is also applicable to the heating elements shown in fig. 5 and 6.
On the other hand, as shown in fig. 1 and 2, the heating element 100, 200 with fusing function according to an embodiment of the present invention may be bent multiple times along the length direction, so that a channel 102 for passing a fluid such as air may be formed.
That is, the heating elements 100 and 200 may be bent a plurality of times to alternately form the peak portions 104 and the valley portions 106 along the longitudinal direction.
Accordingly, the heat generating element 100, 200 having a fusing function according to an embodiment of the present invention may form the channel 102 through which a fluid such as air may pass through the peak 104 and the valley 106, and the fluid may be directly heated by the heat generating element 100, 200 during the passage through the channel 102.
Accordingly, unlike the conventional art in which heat generated from the heating element is transferred to the heat sink and heated by the contact of the air as the heating target with the heat sink, the heating element 100, 200 with the fusing function according to the embodiment of the present invention is the heating element 100, 200, which can directly heat the air as the heating target, so that the heat transfer process can be minimized, the thermal resistance possibly generated during the heat transfer process can be reduced, and the heat density can be improved.
In addition, the heat generating elements 100 and 200 having the fusing function according to the embodiment of the present invention can expand the contact area and the heating area with the fluid to be heated by the passage 102 repeatedly formed along the longitudinal direction, and further expand the heat exchange area, thereby ensuring a large amount of heat generation.
On the other hand, the heating element 100, 200 having the fusing function described above may be implemented as the heating unit 300 for heating the fluid.
As an example, as shown in fig. 8, the heating unit 300 may include a frame 310 for fixing the plurality of heating elements 100, 200. In this case, the plurality of heating elements 100, 200 may be arranged at intervals along the height direction of the frame 310, and both end portions may be fixed to the frame 310.
In this case, a separate supporting member 320 may be disposed between the two heating elements 100, 200 disposed along the height direction of the frame 310, and a controller 330 for controlling the overall driving of the heating unit 300 may be disposed outside the frame 310.
Here, the heating elements 100 and 200 may have all the above-described structures.
Accordingly, the fluid to be heated can be directly heated by the heating element 100 while passing through the channel 102 formed in the heating elements 100, 200, and thus the temperature rise time can be shortened.
The heating elements 100 and 200 and the heating unit 300 described above may also be applied to an air conditioner heater for an automobile, which is provided on an air conditioner side of the automobile, for heating air sucked to the air conditioner side. However, the application of the heating element and the heating unit is not limited to this, and any product that increases the temperature of the fluid by heat exchange may be used.
While the embodiment of the present invention has been described above, the idea of the present invention is not limited to the embodiment presented in the present specification, but other embodiments can be easily presented by a person skilled in the art who understands the idea of the present invention by adding, changing, deleting, adding, etc. constituent elements within the same idea scope, and this is also included in the idea scope of the present invention.

Claims (8)

1. A heating element having a fusing function, comprising:
a plurality of heat sources that generate heat when a current is applied;
a fusing member having both end portions physically connected to two heat sources arranged at a distance from each other to connect the two heat sources in series, and fusing the two heat sources at a set temperature or higher to cut off the electrical connection of the two heat sources; a kind of electronic device with high-pressure air-conditioning system
An insulating member for wrapping the plurality of heat sources and the fuse member,
wherein each of the plurality of heat sources is a plate-shaped conductive member having a predetermined area,
wherein the fusing part is arranged between two heat sources which are arranged at intervals along the length direction of the heating element,
wherein the fusing part includes:
the first fusing part, two end sides are connected to the upper surfaces of two heat sources which are arranged at intervals; and
and a second fuse member having both end portions connected to lower surfaces of the two heat sources arranged at a distance from each other.
2. A heating element with fusing functionality as claimed in claim 1, wherein,
the fuse member is a plate-shaped conductive member having a predetermined area.
3. A heating element with fusing functionality as claimed in claim 1, wherein,
at least a portion of the first and second fuse members are in contact between the two heat sources.
4. A heating element with fusing functionality as claimed in claim 1, wherein,
the insulating member is a film member having insulating properties.
5. A heating element with fusing functionality as claimed in claim 1, wherein,
the heating element is bent for a plurality of times along the length direction to form a flow passage for fluid to pass through.
6. A heating element with fusing functionality as claimed in claim 5, wherein,
the heating element is bent for a plurality of times to alternately form peak parts and valley parts along the length direction,
the flow channel is a space formed by the peak portions and the valley portions.
7. A heating element with fusing functionality as claimed in claim 1, wherein,
the heating element further includes a metal sheet attached to one face of the insulating member through an adhesive layer.
8. A heating unit comprising the heating element having a fusing function according to any one of claims 1 to 7.
CN202080007694.5A 2019-01-22 2020-01-20 Heating element with fusing function and heating unit comprising same Active CN113228823B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
KR20190008249 2019-01-22
KR10-2019-0008249 2019-01-22
KR1020200006386A KR102274251B1 (en) 2019-01-22 2020-01-17 Thermal fusible Heating element and heater unit including the same
KR10-2020-0006386 2020-01-17
PCT/KR2020/000921 WO2020153684A2 (en) 2019-01-22 2020-01-20 Heating element having fuse function and heater unit comprising same

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CN113228823A CN113228823A (en) 2021-08-06
CN113228823B true CN113228823B (en) 2023-10-24

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230062202A (en) * 2021-10-29 2023-05-09 주식회사 엘지에너지솔루션 Fuse and manufacturing method of the same

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Publication number Priority date Publication date Assignee Title
US1227752A (en) * 1916-10-27 1917-05-29 Pratt Johns Co Fusible element for inclosed electrical fuses.
JPH08138837A (en) * 1994-11-16 1996-05-31 Nippon Tungsten Co Ltd Ptc thin plate unit
JP2005078803A (en) * 2003-08-29 2005-03-24 Nippon Dainatekku Kk Sheet heating element
JP2007280695A (en) * 2006-04-04 2007-10-25 Hiroshi Kobayashi Plane heating element and floor heater panel
CN103384419A (en) * 2012-05-03 2013-11-06 珠海格力电器股份有限公司 Self-fusing protecting electric heating device and protecting method thereof

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KR102274251B1 (en) 2021-07-07
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