KR100926312B1 - A electric heater - Google Patents

Abstract

The present invention improves the heating means to prevent electrical accidents and fires caused by electrical short circuits when a large amount of conductive liquids and metals are introduced from the outside. By providing a flexible resilient support means to ensure that the contact between the components of the heating means is always closely maintained, and to provide a heat transfer heater that can reduce the number of parts as a whole to prevent the rise of manufacturing costs,

The heat transfer heater of the present invention for achieving the above object, and having a through-hole of a predetermined size and the upper frame is open on both sides; A lower frame coupled to the upper frame through a coupling means and having a through hole of a predetermined size, and having open both sides; A plurality of heat generating means provided at one end of the terminal unit and installed in a through hole of the upper and lower frames and generating heat by electricity supplied from the outside; An elastic support means integrally provided in the upper and lower frames to elastically support the plurality of heat generating means; And a socket member which is coupled to cover one side opening of the upper and lower frames coupled to each other and has a terminal portion insertion hole into which the terminal portion is inserted.

The elastic support means may include a pair of upper support walls spaced apart from each other on the lower surface of the upper frame, a pair of lower support walls spaced apart from each other on the upper surface of the lower frame, and the upper support wall. It is characterized in that it consists of an upper carbon montage portion that is inclined to protrude obliquely on one inner surface, and a lower carbon montage portion that is inclined to protrude obliquely and formed on any one of the lower support walls.

Upper and lower frames, heating means, heat transfer, heaters, tungsten, cover member

Description

A electric heater

1 and 2 are views showing the internal configuration of a general automotive air conditioner.

3 is a cross-sectional view showing the configuration of a heat transfer heater according to the prior art.

Figure 4 is an exploded perspective view of the heat transfer heater according to the present invention.

5 is an exploded perspective view showing a heat generating means of the electric heater according to the present invention.

Figure 6 is a perspective view showing the appearance of a state in which the heat transfer heater is assembled according to the present invention.

7 is a cross-sectional view showing a state in which the upper and lower frames of the heat transfer heater according to the present invention are coupled.

<Description of the symbols for the main parts of the drawings>

100: upper frame

200: lower frame

300: heating means

400: elastic support means

500: socket member

The present invention relates to an electrothermal heater, and more particularly, by improving the heating means to prevent the occurrence of electrical accidents and fires due to electrical short circuits when a large amount of conductive liquid and metal is introduced from the outside. By providing an integral resilient support means without separately providing a corrugated spring, the contact between the components of the heating means is always kept in close contact, and the total number of parts reduces the number of parts to prevent the increase in manufacturing cost will be.

A typical automotive air conditioner is for heating and cooling a vehicle's interior. A compressor installed in an engine room of a vehicle and driven by an engine, a condenser for liquefying compressed refrigerant, and an interior of an instrument panel of a vehicle And a case connected to each part of the vehicle interior by a duct, and a blower unit installed in the case to blow the indoor unit and the outdoor unit into the case.

As illustrated in FIG. 1, an evaporator 20 for cooling the air blown from the blower unit 15 and a heater core 30 for heating the air are installed in the case 10.

The evaporator 20 installed in the case 10 is connected to the compressor and the condenser to form a refrigeration cycle, and the heater core 30 is connected to the engine cooling means and the connection pipe 31 so that the coolant of the engine can flow. Connected by

In the air conditioner configured as described above, the heating of the vehicle interior is performed while the air supplied from the blower unit 15 passes through the heater core 30 while the coolant for cooling the engine flows through the heater core 30. This is done by supplying the vehicle's interior after heat exchange.

Since the heating of the vehicle is based on the premise that the coolant is sufficiently heated by the engine, cold air is supplied into the vehicle in the state where the coolant is not heated, and thus the heating effect cannot be expected.

In particular, since the engine and the coolant are cooled to sub-zero temperatures in the winter when the temperature of the outside air is very low, a long time is required to raise the temperature of the coolant to a temperature at which the heating is stabilized by driving the engine.

In addition, when the engine of the vehicle is a diesel engine, since the heat generation amount is lower than that of the gasoline engine, the initial heating of the indoor indoor space becomes more difficult.

An example of an automotive air conditioner for solving the above problems is shown in FIG. 2.

Referring to the drawings, an electrothermal heater 40 using a PTC (Positive Thermister Coefficient) element is provided for auxiliary heating of the air blown from the blower unit 15 installed in the case 10.

And, the air conditioner includes a control means for sensing the temperature of the outside air to turn on, off the heat transfer heater (40).

The heating of the initial start by the air conditioner configured as described above is made by auxiliary heating the air supplied to the interior of the vehicle using the heat transfer heater (40).

3 shows a conventional electrothermal heater 40 configured as described above.

As shown in FIG. 3, a plurality of heat dissipation fins 41 having a predetermined length are arranged at predetermined intervals, and heat generating means 42 is interposed between the heat dissipation fins 41.

Corrugated springs 43 are positioned on the outer sides of the two heat radiation fins 41 of the heat radiation fins 41, and an inner web 44 is interposed between the corrugated springs 43 and the heat radiation fins 41 on both sides. .

Upper and lower frames 45 and 45a are positioned outside each of the corrugated springs 43.

The stacked components as described above are fixed to one assembly by the side frame 46.

The heat generating means 42 has a metal strip piece 42a spaced apart from above and below, and a fixing member 42b having a PTC (Positive Thermister Coefficient) element 42c fixed between the metal strip pieces 42a.

Here, reference numeral 42d is a terminal extending from the metal strip piece 42a and protruding a predetermined length to the outside of the side frame 46.

However, the heat transfer heater according to the prior art has the following problems.

First, since the metal strip piece 42a constituting the heat generating means 42 is not electrically insulated from the adjacent heat dissipation fins 41, when a large amount of conductive liquid and metal are introduced from the outside, an electric short circuit occurs and the electrical There was a problem of an accident and fire.

Second, since the upper and lower frames 45 and 45a are fixed only by the side frame 46 while the corrugated spring 43 and the heat dissipation fin 41 are pressed, the side frame 46 is not only subjected to excessive pressure. As a result, the external force applied to the central portion of the heat transfer heater 40 is reduced, and thus the contact between the metal strip piece 42a constituting the heat generating means 42 and the heat dissipation fin 41 is lowered.

Third, excessive force is transmitted to any point of the heat dissipation fin 41 due to the shape characteristic of the corrugated spring 43, and eventually the shape of the heat dissipation fin 41 is deformed. In order to prevent this, the inner web 44 is installed. As the number of parts increases, manufacturing cost increases.

The present invention was devised to solve the above problems, and by improving the heating means, when a large amount of conductive liquid and metal are introduced from the outside, it is possible to prevent the occurrence of an electric accident and fire due to an electrical short circuit. Electric heating heater to keep the contact between the components of the heating means in close contact at all times by providing an integral resilient support means without separately providing a corrugated spring, and to reduce the number of parts as a whole to prevent the increase in manufacturing cost The purpose is to provide.

Heat transfer heater according to the present invention for achieving the above object, and having a through hole of a predetermined size and the upper frame is open on both sides; A lower frame coupled to the upper frame through a coupling means and having a through hole of a predetermined size, and having open both sides; A plurality of heat generating means provided at one end of the terminal unit and installed in a through hole of the upper and lower frames and generating heat by electricity supplied from the outside; An elastic support means integrally provided in the upper and lower frames to elastically support the plurality of heat generating means; And a socket member coupled to cover one side opening of the upper and lower frames coupled to each other and having a terminal part insertion hole into which the terminal part is inserted. The elastic support means is spaced apart from each other to face each other on the lower surface of the upper frame. A pair of upper support walls, a pair of lower support walls spaced apart from each other on an upper surface of the lower frame, and an upper tangery portion which is formed to be inclined to protrude obliquely on an inner surface of any one of the upper support walls; It is characterized in that it is made of a lower tungsten portion that is inclined to protrude inclined to any one of the inner surface of the support wall.

Hereinafter, a preferred embodiment of the heat transfer heater according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is an exploded perspective view of the heat transfer heater according to the present invention, Figure 5 is an exploded perspective view showing the heat generating means of the heat transfer heater according to the present invention, Figure 6 shows the appearance of the state in which the heat transfer heater is assembled according to the present invention. 7 is a perspective view illustrating a state in which the upper and lower frames of the heat transfer heater according to the present invention are coupled to each other.

Electric heater according to the present invention is largely the upper frame 100, the lower frame 200, the heating means 300, the elastic support means 400, the socket member 500, the cover member 510 It is made to include.

The upper frame 100 has a passage hole 100a of a constant size and has a shape in which both sides are open.                     

More preferably, the upper frame 100 has a horizontal portion 110 having a predetermined size having the through hole 100a and a pair of vertical portions that are bent to face each other at both ends of the horizontal portion 110. It consists of 120, 130.

Here, the horizontal portion 110 is formed in a square shape, the through hole (100a) is formed in a rectangular shape.

The lower frame 200 is coupled to the upper frame 100 through the coupling means 150 and has a through hole 200a of a predetermined size, and both sides have an open shape.

The lower frame 200 is bent to face each other at both ends of the horizontal portion 210 having a predetermined size and the horizontal portion 210 having the through hole 200a, the vertical of the upper frame 100 The parts 120 and 130 and the vertical parts 220 and 230 are in contact with each other.

The horizontal portion 210 is formed in a square shape, the through hole 200a is formed in a square shape.

The heat generating means 300 is provided with a terminal portion 300a at one end, and is installed in the through holes 100a and 200a of the upper and lower frames 100 and 200, and generates heat by electricity supplied from the outside. It is.

The heat generating means 300 includes a heating element supporting member 310, a conductor 320, a PTC element 330, and a heating fin 340.

The heating element support member 310 penetrates both sides, and a plurality of through holes 310a having a predetermined size are formed at a predetermined interval.

The conductor 320 is a conductive material and is insulated from the outside by an insulating material.

The conductor 320 is fixedly attached to one side of the heating element support member 310 to block the through hole 310a and includes the terminal portion 300a protruding to one end of the heating element support member 310. .

The P.T.C. element 330 is seated in the through hole 310a and electrically contacts the conductor 320 to generate heat by supplying power therefrom.

The heating fin 340 is attached to at least one side of the heating element support member 310 to be in contact with any one of the PTC element 330 and the conductor 320 and at least the PTC element 330 and the conductor. Electrically insulated from any one of 320.

Here, the reason why the heating fin 340 is electrically insulated from any one of the PTC element 330 and the conductor 320 is that an electrical short occurs when a large amount of conductive liquid and metal are introduced from the outside. This is to prevent electrical accidents and fires in advance.

The coupling means 150, a plurality of coupling holes 151 are formed in any one of the vertical portion 120, 130 of the upper frame 100, the plurality of protrusions 152 are inclined to be inclined to be inclined. Is formed.

In addition, a coupling hole 153 into which the protrusion 152 of the upper frame 100 is inserted is formed in any one of the vertical parts 220 and 230 of the lower frame 200, and the other of the upper frame The protrusion 154 inserted into and coupled to the coupling hole 151 of the 100 is cut and formed to be inclined.

The protrusion 152 of the upper frame 100 and the protrusion 154 of the lower frame 200 are alternately formed.

The elastic support means 400 is integrally provided in the upper and lower frames 100 and 200 to elastically support the plurality of heat generating means 300.

The elastic support means 400, the pair of upper support walls 410 are spaced apart to face each other on the lower surface of the upper frame 100 and spaced apart so as to face each other on the upper surface of the lower frame 200. One of the pair of lower support walls 420, the upper support part 411, which is formed on the inner surface of any one of the upper support walls 410, and protrudes obliquely, and the lower support wall 420. It is made of a lower tungsten portion 421 which is cut on the inner side and protruding obliquely.

The upper and lower finger parts 411 and 421 are alternately formed.

The socket member 500 is coupled to cover one side opening of the upper and lower frames 100 and 200 coupled to each other, and a terminal portion insertion hole 500a into which the terminal portion 300a is inserted is formed.

On the other hand, the cover member 510 is coupled to cover the other opening of the upper and lower frames 100 and 200 coupled to each other.

Referring to the assembly process of the present invention configured as described above are as follows.

First, the upper frame 100 is turned upside down, and then a plurality of heat generating means 300 are disposed between the support walls 410.

Here, since only one of the upper support part 411 is formed on one of the two support walls 410, the upper support part 411 may be formed at an outer side of the heating fin 340 constituting the heating means 300. Elastic support.

On the other hand, the remaining support wall and the heating fins 340 without the upper finger portion 411 are in a state of maintaining a constant gap.

While maintaining the above state, the process of coupling the upper frame 100 to the lower frame 200 via the coupling means 150 is carried out with each other.

When the upper and lower frames 100 and 200 are coupled to each other as described above, the support wall 410 without the upper crust 411 of the upper frame 100 is the lower crust 421 of the lower frame 200. Comes into contact with the outer surface of the supporting wall 420.

In addition, the support wall 410 having the upper trough 411 of the upper frame 100 contacts the inner surface of the support wall 420 without the lower trough 421 of the lower frame 200.

In addition, the lower finger portion 421 of the lower frame 200 is inserted into the gap between the remaining support wall 410 and the heating fin 340 without the upper finger portion 411 to the heating fin 340. It will be elastically supported.

Finally, the one side opening of the upper and lower frames 100 and 200 coupled to each other is coupled to cover the socket member 500 and the terminal 300a is inserted into the terminal insertion hole 500a.

Then, the other side openings of the upper and lower frames 100 and 200 coupled to each other are coupled to cover the cover member 510.

Therefore, the present invention is because the upper and lower frames 100, 200 by using the socket member 500 and the cover member 510 as shown in the prior art, only the upper and lower frames 100, 200 itself is coupled to the conventional side frame By the upper and lower frames can be proceeded more conveniently than the process of assembling the frame.

In addition, since the present invention can pressurize the heat generating means 300 from one side due to the positional characteristic of the elastic support means, as a result, external force is applied to the heat generating means 300 in a balanced manner to generate heat. Contact between the components constituting the means is always maintained intimately for a long time.

Finally, according to the present invention, the external force applied to the heat generating means is applied in a balanced manner so that a component such as a separate inner web 44 or the like may be no longer used to prevent the shape change of the heat dissipation fin 41 as in the prior art. It can contribute to cost reduction by preventing the increase of numbers.

As described above, according to the electrothermal heater according to the present invention, when a large amount of conductive liquid and metal is introduced from the outside by improving the heating means to prevent the occurrence of electrical accidents and fire due to electrical short circuit in advance. In addition, by providing an integrally improved elastic support means without separately providing a corrugated spring, the contact between the constituent parts of the heating means is always maintained in close contact, and the number of parts can be reduced as a whole to prevent an increase in manufacturing cost.

Claims (8)

An upper frame 100 having a predetermined size through-hole 100a and open at both sides thereof; A lower frame 200 coupled to the upper frame 100 through a coupling means 150 and having a through hole 200a of a predetermined size, and both sides of which are open; A terminal portion 300a is provided at one end and installed in the through holes 100a and 200a of the upper and lower frames 100 and 200, and a plurality of heat generating means 300 to generate heat by electricity supplied from the outside. and; Elastic support means (400) provided integrally with the upper and lower frames (100, 200) to support the plurality of heat generating means (300); And a socket member 500 which is coupled to cover one side opening of the upper and lower frames 100 and 200 coupled to each other and a terminal part insertion hole 500a into which the terminal part 300a is inserted. The elastic support means 400, A pair of upper support walls 410 spaced apart from each other on the lower surface of the upper frame 100 and a pair of lower support walls 420 spaced apart from each other on the upper surface of the lower frame 200; An upper carbon montage portion 411, which is cut out on an inner surface of any one of the upper support walls 410 and protrudes obliquely, and a lower carbon that is inclined and protrudes on an inner surface of any one of the lower support walls 420, protrudingly formed. Electric heater, characterized in that made of a branch (421). The method of claim 1, The upper frame 100 has a horizontal portion 110 of a predetermined size having the through hole (100a); Consists of a pair of vertical portion 120, 130 that is bent to face each other at both ends of the horizontal portion 110, The lower frame 200 includes a horizontal portion 210 having a predetermined size having the through hole 200a; It is formed to be bent to face each other at both ends of the horizontal portion 210, characterized in that consisting of the vertical portion 220, 230 in contact with each other and the vertical portion 120, 130 of the upper frame 100 Electric Heater. The method of claim 2, The coupling means 150, A plurality of coupling holes 151 are formed in any one of the vertical parts 120 and 130 of the upper frame 100, and the plurality of protrusions 152 are formed to be inclined and inclined at the other part. A coupling hole 153 into which the protrusion 152 of the upper frame 100 is inserted is formed in one of the vertical parts 220 and 230 of the lower frame 200, and the upper frame 100 in the other part. Heat transfer heater, characterized in that the protrusion 154 is inserted into the coupling hole 151 of the cutting) is cut and formed to be inclined. The heat transfer heater according to claim 3, wherein the protrusions (152) of the upper frame (100) and the protrusions (154) of the lower frame (200) are alternately formed. delete The heat transfer heater according to claim 1, wherein the upper and lower finger parts (411) and (421) are alternately formed. The method of claim 1, The heating means 300, A heating element supporting member 310 formed at a predetermined interval through a plurality of through holes 310a having a predetermined size through both sides; Conductively attached to one side of the heating element support member 310 to block the through hole (310a) and to protrude to one end of the heating element support member 310, the conductive portion wrapped with an insulating material A conductor 320 of material; A P.T.C. element 330 seated in the through hole 310a and electrically contacting the conductor 320 to generate heat by power supply therefrom; It is attached to at least one side of the heating element support member 310 so as to contact any one of the PTC element 330 and the conductor 320 and at least one of the PTC element 330 and the conductor 320 Electric heater characterized in that it comprises a heating fin 340 that is electrically insulated. The electric heater according to claim 1, further comprising one side cover member (510) coupled to cover the other opening of the upper and lower frames (100) (200) coupled to each other.

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