KR20200091346A - Thermal fusible Heating element and heater unit including the same - Google Patents

Abstract

A heating element with a fuse function is provided. The heating element with a fuse function according to one exemplary embodiment of the present invention includes: a plurality of heat sources that generate heat when current is applied; a fuse member that has both ends physically connected to two heating sources spaced apart from each other to connect the two heating sources in series, and is fused when a temperature exceeds a set temperature to block electrical connection between the two heating sources; and an insulation member surrounding the plurality of heating sources and fuse members.

Description

A heating element having a fuse function and a heater unit including the same {Thermal fusible Heating element and heater unit including the same}

The present invention relates to a heating element, and more particularly, to a heating element and a heater unit having its own fuse function.

Heaters using common nichrome wires may ignite when overheated. Accordingly, the electric vehicle is equipped with a heater unit using a PTC element for heating.

However, the heater unit using a PTC element as a heating element has a limitation in increasing the size of the PTC element, so that a large amount of heat cannot be obtained.

In addition, the heater unit using the PTC device has a problem in that the temperature distribution to the heat dissipation fins is uneven and the temperature distribution is non-uniform for each part of the conductor because the conductive carbon mixture, which is a conductor, is bonded to only a part of the heating surface of the PTC device.

Accordingly, there is a need to develop a heating element and a heater unit capable of forming a uniform temperature distribution and obtaining a large amount of heat.

In addition, the heater unit using the PTC element is a method of heating the heat generated by the heating element to the heat dissipation fins to heat the air in contact with the heat dissipation fins. There is a structural problem.

The present invention has been devised in view of the above points, and a heating element having a fuse function capable of preventing ignition due to overheating that may occur in a heating process while reducing heat resistance to improve heat density and a heater including the same Its purpose is to provide units.

In addition, another object of the present invention is to provide a heating element having a fuse function capable of obtaining a uniform temperature distribution and securing a large amount of heat, and a heater unit including the same.

In order to achieve the above object, the present invention, a plurality of heat generators that generate heat when current is applied; A fuse member which is physically connected to two heat sources having both end portions spaced apart from each other to connect the two heat sources in series, and fuses when the set temperature is higher than the temperature to cut off the electrical connection between the two heat sources; And an insulation member surrounding the plurality of heat sources and the fuse member.

In addition, the heat source may be a plate-shaped conductive member having a predetermined area. For example, the heat generating source may be an amorphous ribbon sheet, a metal sheet, a plate-like sheet including at least one or more of Kantal and Pekalloy alloys.

Further, the fuse member may be a plate-shaped conductive member having a predetermined area. For example, the fuse member may be made of lead, tin, zinc, cadmium, copper, and one or more metal materials in which they are combined.

In addition, the fuse member may be connected to the upper or lower surfaces of the two heat sources, which are spaced apart from each other at both ends.

In addition, the fuse member includes a first fuse member that is connected to the upper surfaces of the two heat sources, which are spaced apart from each other, and a second fuse member, which is connected to the lower surfaces of the two heat sources, respectively. can do. At this time, at least a portion of the first fuse member and the second fuse member may contact between the two first and second heat sources.

Further, the insulating member may be a film member having insulating properties.

In addition, the heating element may be bent multiple times along the longitudinal direction so that a flow path through which the fluid passes is formed. In this case, the heating element may be bent multiple times to alternately form the peaks and valleys along the longitudinal direction, and the flow path may be a space formed by the peaks and valleys.

In addition, the heating element may further include a metal sheet attached to one surface of the insulating member via an adhesive layer.

On the other hand, the present invention provides a heater unit including a heating element having the above-described fuse function.

According to the present invention, when the power is applied to the heating element itself, a plurality of heat sources that generate heat when the power is applied generate heat at a temperature higher than or equal to a set temperature, thereby preventing current from flowing by melting and preventing ignition caused by overheating. . Through this, even if a controller malfunctions, the heater itself can be protected.

In addition, according to the present invention, the heating element can be implemented in a plane to lower the thermal resistance, thereby increasing the heating efficiency and increasing the reactivity.

1 is a schematic diagram showing a heating element having a fuse function according to an embodiment of the present invention,
Figure 2 is a view seen from the front of Figure 1,
3 is a view showing a state in which the heating element having a fuse function according to an embodiment of the present invention is unfolded;
4 is a cross-sectional view taken along line AA in FIG. 3, showing a connection relationship between two heat sources and a fuse member,
5 is a cross-sectional view taken along line AA in FIG. 3, showing another form of connection between the two heat sources and the fuse member,
6 is a cross-sectional view taken along line AA in FIG. 3, showing another form of connection between two heat sources and a fuse member,
7 is a view showing a state in which the metal sheet is applied to the outer surface of the insulating member in FIG. 4, and
8 is an exemplary view showing a case where a heating element having a fuse function according to an embodiment of the present invention is implemented as a heater.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily practice. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. In the drawings, parts not related to the description are omitted in order to clearly describe the present invention, and the same reference numerals are attached to the same or similar elements throughout the specification.

The heating elements 100 and 200 having a fuse function according to an embodiment of the present invention include a plurality of heating sources 110, fuse members 120, 120', 120" and an insulating member 130 as shown in FIGS. Includes.

The plurality of heat sources 110 may generate heat by generating heat when power is applied. As illustrated in FIGS. 4 to 7, the plurality of heat sources 110 may be spaced apart from each other along the longitudinal direction of the heating elements 100 and 200, and the fuse members 120, 120', and 120" may be disposed. It can be electrically connected to each other via a medium.

That is, the plurality of heat sources 110 may be spaced apart from each other along the longitudinal direction of the heating elements 100 and 200, and the two heat sources 110 spaced apart from each other along the longitudinal direction may be the fuse It may be connected in series via the members (120,120',120").

Accordingly, when power is applied from the outside, the plurality of heat sources 110 may be heated by being electrically connected to each other via the fuse members 120, 120', and 120".

At this time, the plurality of heat sources 110 may be provided in a plate shape having a predetermined area. That is, the heat generator 110 may be a plate-shaped conductive member that generates heat when power is applied.

As a non-limiting example, the heat generating source 110 may be an amorphous ribbon sheet. Here, the amorphous ribbon sheet may be a ribbon sheet including at least one of an amorphous alloy and a nano-crystalline alloy. Further, the heat generating source 110 may be a plate-shaped metal sheet having a predetermined area, and aluminum or copper may be used as the metal sheet.

In addition, the heat generating source 110 may be a plate-shaped conductive member including at least one of cantal and pekalloy alloys to prevent crystallization due to repeated thermal fatigue exposure.

However, the material of the heat generating source 110 is not limited thereto, and a linear conductive member may be arranged in a predetermined pattern to be implemented in a plate shape or a plane shape, and a heater if the heat source can be implemented in a plane or plate shape. All known heat sources that can be used as can be applied.

Here, the plurality of heat sources 110 constituting the heating elements 100 and 200 may be provided to have the same area as each other or may be provided to have different areas.

Through this, the heating elements 100 and 200 having a fuse function according to an embodiment of the present invention have a plurality of heat generating sources 110 having a predetermined area electrically connected to each other via the fuse members 120, 120' and 120" It can be implemented as a heating element.

Due to this, the heating elements 100 and 200 having a fuse function according to an embodiment of the present invention may increase the heating area by simultaneously heating the heat generating source 110 having a predetermined area when power is applied, and increase heat generation. Since the area of heat exchange with air can be widened through the area, reactivity can be increased.

In addition, the heating elements 100 and 200 having a fuse function according to an embodiment of the present invention may generate heat at a predetermined area in each heating source 110 so that even when the total length is increased, the heating temperature is uniform regardless of the position. Can be implemented.

The fuse members 120, 120', and 120" may physically connect two heat sources 110 spaced apart from each other along the longitudinal direction of the heating elements 100, 200. Through this, the fuse members 120, 120' ,120") may connect the two heat sources 110 in series as described above.

At this time, the fuse member (120,120',120") is a plurality of heat generating source 110 to generate heat when the power is applied to heat when the heat is higher than the set temperature by fusing to prevent the current from flowing to the plurality of heat source 110 side have.

Through this, the heating element (100,200) having a fuse function according to an embodiment of the present invention can be prevented from being ignited by overheating by implementing a current blocking function itself through the fuse member (120,120',120"). have.

In addition, since the heating element 100,200 having a fuse function according to an embodiment of the present invention has a built-in current blocking function, the fuse member 120, 120', 120 even if a failure occurs in an external controller, for example, a heater controller. With "), the self-protection function can be activated to increase stability.

Here, the fuse member (120,120',120") is a plurality of heat sources 110 connected in series with each other can be cut off by melting by the heat transmitted from the heat source 110 when the heat generated at a higher temperature than the set value to cut off the current. .

In one example, the fuse member (120,120',120") may be made of lead, copper, tin, zinc, cadmium and one or more metal materials in which they are combined. However, the fuse member (120,120',120") The material is not limited thereto, and any known material that can be used as a fuse can be applied.

In addition, the fuse members 120, 120', 120" may be provided in a linear shape with a predetermined length, but may be provided in a plate shape having a predetermined area as in the heat generating source 110 to reduce the possibility of breakage due to external force. Can.

The fuse members 120, 120', and 120" may physically connect the two heat sources 110 spaced apart from each other in various ways.

For example, the fuse members 120, 120', and 120" may connect two heating sources 110 in series through the method of FIGS. 4 to 6.

Specifically, the fuse member 120 may connect the same surface of the two heat generating sources 110 spaced apart from each other. That is, the fuse member 120 may be respectively connected to the upper surfaces of the two heat generating sources 110 spaced apart from each other as shown in FIG. 4. In addition, the fuse members 120 may be respectively connected to the lower surfaces of the two heat generating sources 110 spaced apart from each other.

As another example, the fuse members 120 ′ and 120 ″ may include first fuse members 121 and 121 ′ and second fuse members 122 and 122 ′ as illustrated in FIGS. 5 and 6. In this case, the first fuse members 121 and 121' may be respectively connected to the upper surfaces of the two heat generating sources 110 spaced apart from each other, and the second fuse members 122 and 122' may be spaced apart from each other. Each of the two heating sources 110 may be connected to the lower surfaces.

Through this, even if one of the first fuse member (121,121') and the second fuse member (122,122') is physically separated from the two heat sources 110, the other fuse member is physically connected to the two heat sources (110) Can keep connected. Due to this, it is possible to increase the energization stability between the plurality of heat sources 110 that are electrically connected through the fuse members 120' and 120".

At this time, the first fuse member (121,121') and the second fuse member (122,122') may be provided so as not to contact each other between the two heat sources 110, as shown in Figure 5, shown in Figure 6 As described above, at least a portion of the two heat sources 110 may be provided to contact each other.

However, the connection method of the fuse member (120,120',120") and the heat source 110 is not limited thereto, and a method that can be melted when the set temperature is exceeded while physically interconnecting the two heat sources 110 is appropriate. can be changed.

The insulating member 130 may be disposed to surround a plurality of heat generators 110 arranged in series at intervals along the longitudinal direction and a fuse member 120, 120', 120" connecting the two heat generators 110 in series. have.

That is, the insulating member 130 can prevent the heat generating source 110 and the fuse members 120, 120' and 120", which are conductive members, from being exposed to the outside.

Through this, the insulating member 130 may prevent the heat generating source 110 and the fuse members 120, 120', and 120" from being shorted through contact with other parts when contacted with other parts.

Here, the heating element (100,200) having a fuse function according to an embodiment of the present invention is provided with a pair of terminal members (141,142) for applying the power supplied from the outside to the heat generating source 110 on both ends side The pair of terminal members 141 and 142 may be provided so that at least a part of the length is exposed to the outside while one end is connected to the heat source 110.

For example, the insulating member 130 includes a first insulating member 131 covering the upper surfaces of the heat generating source 110 and the fuse members 120, 120', and 120", the heat generating source 110, and the fuse members 120, 120', 120 ") may include a second insulating member 132 covering the lower surface, and the first insulating member 131 and the second insulating member 132 may be attached via an adhesive layer.

In addition, the insulating member 130 may be provided to simultaneously cover the plurality of heat sources 110 and one or more fuse members 120, 120', 120".

However, the insulating member 130 is not limited thereto, and may be formed as a single member.

Meanwhile, the insulating member 130 may have insulating properties for electrical insulation, and may have heat resistance together to prevent damage caused by heat generated from the heat generating source 110.

For 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 used without limitation as long as it is a material having insulation and heat resistance.

In addition, the insulating member 130 may be formed of a coating layer coated with a coating solution having insulating and heat resistance, or may be in a form in which a coating layer and a film member are combined with each other.

Meanwhile, the heating element 200 having a fuse function according to an embodiment of the present invention may further include a metal sheet 150 attached via an adhesive layer to one surface of the insulating member 130 as shown in FIG. 7. Can.

The metal sheet 150 may be a plate-like sheet having a predetermined area, and is disposed on at least one surface of the heat generating source 110 and the insulating member 130 covering the fuse members 120, 120', and 120", thereby generating the heating element. At 200, an exposed surface exposed to the outside may be formed.

Through this, the metal sheet 150 can protect the heat generating source 110 from external force and maintain the shape of the heat generating source 110, and can quickly dissipate heat generated from the heat generating source 110.

For example, copper or aluminum having excellent thermal conductivity may 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.

In addition, the heating element 200 having a fuse function according to an embodiment of the present invention includes the above-described metal sheet 150, and when the metal sheet 150 forms an exposed surface exposed to the outside, the metal sheet 150 may be a hollow tube having an empty interior. In this case, the plurality of heat sources 110, the fuse member (120,120',120") and the insulating member 130 may be in a form inserted into the hollow tube, the hollow tube through pressure It can be implemented in the form of a plate.

In the drawing, although the metal sheet 150 is provided on the heating element shown in FIG. 4, the present invention is not limited thereto, and the same can be applied to the heating elements shown in FIGS. 5 and 6.

On the other hand, the heating element (100,200) having a fuse function according to an embodiment of the present invention is a plurality along the longitudinal direction so that a flow path 102 through which a fluid such as air can be formed as shown in Figures 1 and 2 It can be bent twice.

That is, the heating elements 100 and 200 may be bent multiple times to alternately form the peaks 104 and the valleys 106 along the longitudinal direction.

Through this, the heating elements 100 and 200 having a fuse function according to an embodiment of the present invention may be formed with a flow path 102 through which a fluid such as air can pass through the hill 104 and the valley 106, The fluid may be directly heated through the heating elements 100 and 200 in the process of passing through the flow path 102.

Accordingly, unlike the conventional method in which the heat generated by the heating element is transferred to the heat dissipation fin and the air to be heated is heated through contact with the heat dissipation fin, the heating element 100,200 having a fuse function according to an embodiment of the present invention is a heating element 100,200 ) Can directly heat the air in the tropical phase, so that the heat transfer process can be minimized, thereby reducing the thermal resistance that can occur in the heat transfer process to increase the heat density.

In addition, the heating elements 100 and 200 having a fuse function according to an embodiment of the present embodiment widen the heat exchange area by increasing the contact area and heating area with the fluid to be heated through the flow path 102 repeatedly formed along the longitudinal direction. A large amount of heat can be secured.

Meanwhile, the heating elements 100 and 200 having the above-described fuse function may be implemented as a heater unit 300 for heating a fluid.

As an example, the heater unit 300 may include a frame 310 for fixing the plurality of heating elements 100 and 200 described above as shown in FIG. 8. In this case, the plurality of heating elements 100 and 200 may be spaced apart along the height direction of the frame 310, and both ends may be fixed to the frame 310.

In this case, a separate support member 320 may be disposed between the two heating elements 100 and 200 disposed along the height direction of the frame 310, and the heater unit 300 may be disposed outside the frame 310. A controller 330 for controlling the overall driving of the vehicle may be provided.

Here, all of the above-described configurations may be employed as the heating elements 100 and 200.

Through this, the fluid to be heated can be directly heated through the heating element 100 in the process of passing through the flow path 102 formed in the heating elements 100 and 200, thereby shortening the heating time.

The above-described heating elements 100 and 200 and the heater unit 300 may be installed on the air conditioning unit side of the vehicle and applied to a vehicle air conditioning heater for heating the air sucked into the air conditioning unit side. However, the use of the heating element and the heater unit is not limited to this, and it is revealed that any product capable of raising the temperature of the fluid through heat exchange can be applied.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention may add elements within the scope of the same spirit. However, other embodiments may be easily proposed by changing, deleting, adding, or the like, but this will also be considered to be within the scope of the present invention.

100, 200: heating element 110: heating source
102: Euro 104: maternity
106: ribs 120,120',120": fuse member
121,121': First fuse member 122,122': Second fuse member
130: insulating member 131: first insulating member
132: second insulating member 141,142: terminal member
150: metal sheet 300: heater unit
310: frame 320: support member
330: controller

Claims (11)

A plurality of heat sources that generate heat when current is applied;
A fuse member which is physically connected to two heat sources at which both ends are spaced apart from each other to serially connect the two heat sources, and fuses to break the electrical connection between the two heat sources when the set temperature is higher; And
An insulating member surrounding the plurality of heat sources and the fuse member; A heating element having a fuse function comprising a. According to claim 1,
The heating source is a heating element having a fuse function that is a plate-shaped conductive member having a predetermined area. According to claim 1,
The fuse member is a heating element having a fuse function that is a plate-shaped conductive member having a predetermined area. According to claim 1,
The fuse member is a heating element having a fuse function that is connected to the upper or lower surfaces of the two heat sources, which are arranged at both ends and spaced apart from each other. According to claim 1,
The fuse member is a fuse including a first fuse member that is connected to the upper surfaces of the two heat sources, which are spaced apart from each other, and a second fuse member, which is connected to the lower surfaces of the two heat sources, respectively. Heating element with function. The method of claim 5,
The first fuse member and the second fuse member are heating elements having a fuse function in which at least a portion of the two heat sources contacts. According to claim 1,
The insulating member is a heating element having a fuse function that is an insulating film member. According to claim 1,
The heating element, the heating element having a fuse function is bent multiple times along the longitudinal direction so that the flow path through which the fluid passes. The method of claim 8,
The heating element is formed by bending a plurality of times so that the hills and valleys are alternately formed along the longitudinal direction,
The flow path is a heating element having a fuse function that is a space formed by the hill and valleys. According to claim 1,
The heating element is a heating element having a fuse function further comprising a metal sheet attached to one side of the insulating member via an adhesive layer. A heater unit comprising a heating element having a fuse function according to any one of claims 1 to 10.

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