KR100772068B1 - Ribbon heater for sub heater - Google Patents

Abstract

A ribbon heater for an auxiliary heating apparatus is provided to reduce a manufacturing cost of the heating apparatus by reducing a resistance by shortening the thickness of a heat radiating material. An auxiliary heating apparatus includes heat radiating pins, which are coupled with both planes of a heat radiating material. The heat radiating materials are laminated to form a heat radiating laminate. An electrode terminal is formed in a length direction on at least one end of the heat radiating material and the heat radiating pin. An insulation material is coated on an outer surface of a ribbon-type amorphous metal alloy such that a ribbon heater(50) is formed.

Description

Ribbon heater for sub-heater {ribbon heater for sub heater}

1 is a perspective view of an auxiliary heating apparatus having a conventional planar heating element,

Figure 2 is a perspective view showing a ribbon heater for an auxiliary heating device to which the present invention is applied,

3 is a cut perspective view of the ribbon heating element of FIG. 2;

4 is a detailed view showing the arrangement of the ribbon heating element and the corrugated fin of the present invention;

5 is a detailed view showing another example of the arrangement of the ribbon heating element and the corrugated fin of the present invention;

6 is a configuration diagram showing an example of an electrode forming state of the ribbon heater of the present invention;

7 is a configuration diagram showing another example of the electrode formation state of the ribbon heater of the present invention;

8 is a state in which the cooling fins are fitted to the connecting portion of FIG.

FIG. 9 is a state diagram illustrating a joint part of a corrugated pin formed in the connection part of FIG. 7. FIG.

<Explanation of symbols for main parts of the drawings>

50: ribbon heating element 50a: first electrode

50b: second electrode 50c: connecting portion

52: amorphous metal alloy 54: insulating material

60: corrugated pin 62: flat portion

63: opening 64: inclined portion

The present invention relates to a ribbon heater for an auxiliary heating device.

In general, a vehicle is provided with an air conditioner for heating or cooling the room, and evenly transports cold and warm air to each part of the vehicle through the ventilation system and the ventilation passage. That is, in the air conditioner of the vehicle, the cold air generated in the evaporator of the air conditioner, or the warm air generated in the engine is transferred to the interior of the vehicle to cool or heat.

In the case of cooling to lower the indoor temperature, such as in summer, the air conditioner is operated to discharge cold air.In the case of heating to increase the temperature of the interior, such as winter, the cooling water heated by circulating the engine is blown through the blower to prevent the engine from overheating Heat exchange with the outside air supplied to the to supply the warmth through the discharge holes are arranged in various places in the vehicle.

Heat generated from the engine is generated as fuel is burned in the cylinder, and the temperature of the combustion gas generated at this time is about 2000 ° C to 2500 ° C, which damages components constituting the engine. The temperature of the engine is maintained at about 80 ° C to 90 ° C by the temperature, that is, the circulation of the cooling water.

Although it is preferable to efficiently heat the room using the coolant heat exchanged with the engine, it is possible to heat the interior of the vehicle using the heated coolant only after the time until the engine is heated after the initial start-up. For this reason, in winter, the engine is idling for a long time before driving in order to immediately heat the boarding, which causes inconvenience due to environmental pollution, fuel consumption and vehicle noise.

Therefore, an auxiliary heating apparatus is disclosed in which warm air is formed in an auxiliary heater made of a hot wire coil and blown to a room before the cooling water is heated. However, the auxiliary heater method using a heating coil has a problem that the heating effect of the heating coil is large, the heating effect is large, but the risk of fire is high, the life of the heating wire is short, and the parts of the heating coil must be frequently repaired and replaced.

Therefore, research on new devices that replace heating means such as heating coils as described above has been actively conducted, and has a constant resistance thermistor (PTC) having a constant resistance temperature coefficient that can be used semi-permanently due to a low risk of fire and a long life. Device: Positive Temperature Coefficient Thermister is widely known.

Auxiliary heating apparatus using a PTC element is disclosed in Korea Patent Nos. 10-0479187, 10-0474094, 10-0576371 and the like. The PTC device is a static thermistor having a constant resistance temperature coefficient made by mixing tin, cerium, and the like in a barium titanate-based semiconductor by about 0.1% as the temperature increases, and the resistance value varies with the ambient temperature. Therefore, it is an economical and efficient sensor-type heating element that generates high heat at low temperatures and low heat again at high temperatures. It has automatic temperature control and automatic protection from overheating and overvoltage. In addition, it does not react with oxygen in the air, it does not generate an oxidizing gas that causes air pollution.

However, the auxiliary heating device using the PTC element as disclosed in the above-described Korean Patent Nos. 10-0479187, 10-0474094, 10-0576371, etc., has a limit in increasing the size of the PTC element, so that a larger amount of heat is generated. Since each conductive carbon mixture is bonded only to a part of the heat sink, the temperature distribution is uneven for each heat sink, and the temperature transmitted to each heat sink is different.The PTC element sinters and solidifies the PTC raw powder to form an electrode member. Since the manufacturing process and assembly process are complicated and each part is densely packed, the ventilation resistance increases during blowing, and the PTC element has the characteristic that the initial inrush current increases as the temperature rises. When used at high temperature, the inrush current is increased to exceed the capacity of the battery (100 ~ 120A), the car battery is discharged there was.

In order to solve this problem, an auxiliary heating device having a planar heating element is disclosed in Korean Laid-Open Patent No. 2006-0021428. The Korean Laid-Open Patent Publication No. 2006-0021428, as shown in Figure 1, a plurality of planar heating element 10 for generating heat to which a current is applied, and the electrode terminal 20 coupled to the planar heating element to apply a current ) And a heat dissipation fin 30 coupled between the planar heating element 10 to easily release heat generated from the planar heating element 10 to the outside.

The planar heating element 10 is positioned to be spaced apart at regular intervals in the longitudinal direction, and is coupled to the plate-shaped conductive carbon mixture 11 formed long in the transverse direction, and the top and bottom surfaces of the conductive carbon mixture 11. It consists of a pair of insulating sheets 12 to be. The conductive carbon mixture 11 is a mixture containing an electric resistive material in a mixture of carbon black charcoal powder, graphite powder, an organic insulator compound, and a ceramic bonding material, and generates heat as a current flows therein.

However, the PTC heater using the conductive carbon mixture or the auxiliary heater with the planar heating element is insufficient in continuous production due to the lack of flexibility, the manufacturing process is complicated, expensive, and the thickness must be kept above a predetermined thickness. There is a problem that can not maximize the opening area, it is impossible to design a complex shape.

Therefore, the present invention has been made to solve the above problems, the object of the present invention is to reduce the thickness of the heating element to lower the ventilation resistance while maximizing the opening area, and the design and continuous production of complex shape is possible to make the manufacturing process It is to provide a ribbon heater for auxiliary heating apparatus that can simplify and reduce the manufacturing cost.

In the auxiliary heating device ribbon heater according to the present invention, in the heater for the auxiliary heating device in which the heat radiation fins are coupled to and laminated on both side surfaces of the heating element, and at least one end of the heating element and the heat radiation fin in the longitudinal direction, the heating element is a ribbon The outer surface of the amorphous metal alloy of the form is characterized in that the ribbon heating element coated with an insulating material.

A first electrode is formed on one side of the ribbon heating element in the longitudinal direction, and the other side of the ribbon heating element is bent to be connected to one side of the adjacent ribbon heating element to form a connection portion, and the second side of the adjacent ribbon heating element is formed on the second electrode. An electrode may be formed.

The heat dissipation fin is preferably a corrugated fin formed by zigzag flat portions on both sides in a height direction, and the flat portions of the corrugated fin are alternately in close contact with each other on both sides of the ribbon heating element.

It is preferable that the flat portions of adjacent corrugated fins arranged between the ribbon heating elements are alternately in close contact with each other.

Heat dissipation thin plates are bonded to each other, or cooling fins are inserted on both surfaces of the connecting portion to which the adjacent ribbon heating elements are bent to prevent hot spots due to insufficient heat dissipation. Then, two adjacent corrugated fins inside the connected ribbon heating element are connected to both sides of the connecting portion in which the adjacent ribbon heating element is bent to prevent hot spots due to lack of heat dissipation, thereby forming an inner portion of the fin. The two corrugated pins in the chain form an outer joint.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

Figure 2 is a perspective view showing an example of a ribbon heater for an auxiliary heating apparatus to which the present invention is applied, showing a structure in which two ribbon heating elements are stacked. As shown, the both sides of the ribbon heating element 50, the corrugated fin 60, which acts as a heat radiating fin is coupled and stacked on both sides of the ribbon heating element 50, the both sides of the ribbon heating element 50 and the corrugated fin 60 in the longitudinal direction The electrode terminal parts 70 and 70 are formed, and the terminal holder 72 is coupled to the electrode terminal part 70. And, the last laminated corrugated pin 60 is coupled to the closing plate 74 that serves as a support and heat dissipation. The ribbon heating element 50 and the corrugated fin 60 and the closing plate 74 is fixed by a coupler or an adhesive (not shown).

As shown in FIG. 3, the ribbon heating element 50 has a structure in which an insulating material 54 is coated on an outer surface of an amorphous metal alloy 52 in the form of a ribbon.

The amorphous metallic alloy 52 has a very high ductility and elongation and a short heating time, 89 to 96 wt% of iron (Fe), 2 to 4 wt% of boron (B), and silicon (Si). ) 2 to 7% by weight, and a small amount of chromium (Cr), cobalt (Co) and molybdenum (Mo) may be added as necessary. The amorphous metal alloy is a material prepared by supercooling the liquid at a rate (million degrees / second) at which the atoms do not have time to arrange the atoms, and has an amorphous, amorphous, and glass state.

The insulating material 54 is a known polymer, PET (C-PET, A-PET), PVC, PTFE, Silicone, polyamide-based heat-resistant polymer may be used. As an example, when PET is used, its use temperature ranges from -60 ° C to 150 ° C (up to 250 ° C for C-PET) and its value varies depending on the crystal area, but its glass transition temperature (Tc) is about It is 70 degreeC, and its melting point (Tm) is about 250 degreeC.

The ribbon heating element 50 can reduce the thickness of the heating element to lower the ventilation resistance while maximizing the opening area, and it is possible to design and continuously produce a complicated shape.

As shown in FIG. 4, the corrugated fin 60 has flat portions 62 zigzag on both sides in a height direction, and opposite sides of the flat portions 62 are narrower than the width of the flat portions 62. An opening 63 opened in width is formed, and the flat portions 62 on both sides are connected to the inclined portion 64. On both sides of the ribbon heating element 50, the flat portion 62 of the corrugated fin 60 is alternately in close contact with each other, and this arrangement makes the heat generation of the ribbon heating element 50 uniform and thus hot spots (hot) spot: prevents the local concentration of heat) to increase the life of the ribbon heating element (50).

Further, the flat portions 62 and 62 of the adjacent corrugated fins 60 and 60 arranged between the ribbon heating elements 50 and 50 are also brought into close contact with each other (part A of FIG. 4). The arrangement is simple in structure and manufacturing because adjacent corrugated pins 60 and 60 are in contact with each other to maintain rigidity without a separate support plate.

On the other hand, Figure 5 shows a corrugated pin 160 of another embodiment of the present invention. In the corrugated fin 160 of the embodiment of FIG. 4, the adjacent flat portions 162 in the longitudinal direction are almost close, so that the openings 163 are hardly generated, and the inclination of the inclined portion 164 in the embodiment of FIG. It is high. Therefore, the heat dissipation performance of the corrugated fin 160 is higher, the support force of the ribbon heating element 50 is increased, and the support force between the corrugated fins in close contact is increased (see part B of FIG. 5) to further increase the rigidity of the ribbon heater. It works.

FIG. 6 shows a ribbon heater in which the corrugated fin 160 of FIG. 5 is stacked in close contact with both sides of the ribbon heating element 50. The first electrode 50a is disposed on both sides of the ribbon heating element 50 in the longitudinal direction. ) And the second electrode 50b are formed. A heat dissipation thin plate such as a copper foil is bonded to the first electrode 50a and the second electrode 50b so as not to generate a hot spot due to lack of heat dissipation.

FIG. 7 illustrates a first electrode 50a formed at one side in the longitudinal direction of the ribbon heating element 50 in the structure of FIG. 6, and the other side in the longitudinal direction of the ribbon heating element 50 is bent to form an adjacent ribbon heating element 50. The connection part 50c is connected to one side, and the second electrode 50b is formed on the other side of the adjacent ribbon heating element 50. The first electrode 50a, the second electrode 50b, and the adjacent ribbon heating element 50 are bent to prevent hot spots from occurring due to lack of heat radiation on both surfaces of the connecting portion 50c. Heat dissipation thin plates, such as Cu foil, are bonded.

FIG. 8 is an embodiment in which the cooling fin 165 is fitted to both sides of the connecting portion 50c of the ribbon heating element 50 in the structure of FIG. 7 so that no hot spot occurs due to insufficient heat radiation.

FIG. 9 shows two corrugated pins inside the ribbon heating element 50 connected to both sides of the connection portion 50c of the ribbon heating element 50 such that hot spots are not generated due to insufficient heat radiation. (160, 160) is connected to form a pin inner joint (160a) and the two corrugated fins (160, 160) on the outside of the ribbon heating element 50 is connected to form a pin outer joint (160b).

As described above, since the ribbon heating element 50 of the present embodiment has high flexibility, the ribbon heating element 50 can be bent and manufactured in various forms, thereby reducing manufacturing cost and manufacturing process.

According to the ribbon heater for the auxiliary heating device according to the present invention, it is possible to reduce the thickness of the heating element to lower the ventilation resistance and maximize the opening area, and to simplify the manufacturing process and reduce the manufacturing cost by design and continuous production of complex shape The effect is that you can.

Claims (6)

In the heater for the auxiliary heating device is coupled to the heat radiating fins are laminated on both sides of the heating element, the electrode terminal portion is formed in at least one end in the longitudinal direction of the heat generating element and the radiating fin, The heating element is a ribbon heater for an auxiliary heating device, characterized in that the ribbon heating element 50 is coated with an insulating material 54 on the outer surface of the amorphous metal alloy in the form of ribbon (52). The method according to claim 1, The first electrode 50a is formed on one side of the ribbon heating element 50 in the longitudinal direction, and the other side of the ribbon heating element 50 is bent to be connected to one side of the adjacent ribbon heating element to form a connection portion 50c. And the second electrode (50b) is formed on the other side of the adjacent ribbon heating element (50). The method according to claim 1, The heat dissipation fin is a corrugated fin 60 having a flat portion 62 zigzag on both sides in the height direction. Ribbon heater for auxiliary heating device, characterized in that the flat portion 62 of the corrugated fin 60 is alternately in close contact with both sides of the ribbon heating element 50 alternately. The method according to claim 1, The heat dissipation fin is a corrugated fin 60 having a flat portion 62 zigzag on both sides in the height direction. Flat heaters 62 of the adjacent corrugated fins 60 arranged between the ribbon heating elements 50 are alternately in close contact with each other. The method according to claim 2, Ribbon heater for auxiliary heating device characterized in that the cooling fins (165) is inserted on both sides of the connecting portion (50c) is bent and the adjacent ribbon heating element 50 is connected to prevent hot spots due to insufficient heat radiation. The method according to claim 2, Two corrugated fins 160 on the inner side of the ribbon heating element 50 connected to each other so that the adjacent ribbon heating element 50 is bent to prevent hot spots due to lack of heat radiation are connected to both sides of the connecting portion 50c. Ribbon heater for auxiliary heating device, characterized in that the inner joint portion (160a) and the two corrugated fins 160 on the outside of the ribbon heating element (50) connected to form a fin outer joint (160b).

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