KR20030019032A - A heating apparatus using ptc element - Google Patents

Abstract

PURPOSE: A heating apparatus using a PTC element is provided to achieve easier manufacturing process for the heating unit by elastically connecting the PTC element to an electrode. CONSTITUTION: A heating apparatus includes a plurality of radiators(300). The radiators(300) have a heat sink made of thermally conductive material so as to effectively emit heat to the atmosphere, and a thermal/electric conductive device having a cavity for accommodating the heat sink. At least one insulating plate is inserted between the radiators(300). The insulating plate is made of nonconductive material and has a perforation hole at the center. At least one PTC element is arranged in the perforation hole of the first insulating plate. The PTC element is electrically connected to the radiators(300) positioned at upper and lower portions of the PTC device so as to generate heat when power is applied.

Description

Heat generator using PTC element {A HEATING APPARATUS USING PTC ELEMENT}

The present invention relates to a heating device for heating air in a predetermined place, and more particularly, by using a PTC (Positive Temperature Coefficient) element as a heating element, so that the PTC element and the radiator can be simply and accurately combined The present invention relates to a heat generating device using a PTC element that improves the ease of assembly of a product.

As is generally known, a PTC (Positive Temperature Coefficient) device is a semiconductor device that has a characteristic of rapidly increasing electric resistance when the Curie temperature is higher than the Curie temperature.A magnetic temperature that maintains a constant heating temperature regardless of the ambient temperature when a voltage is applied. There is a control function. The feature of such a PTC element is a trend that the field of application as a heating element of the heater is expanding because it can be utilized as an advantageous advantage as a heating element.

A heating device that serves as a heater by using the PTC element has been proposed in Korean Utility Model No. 1996-6131 ('Definition Temperature Coefficient Thermistor Heating Assembly'), which will be briefly described with reference to FIG. 1. As follows.

As shown in FIG. 1, a conventional heating device using a PTC element is formed by arranging a PTC heating element 100 between a pair of radiators 200 facing each other, and the pair of radiators 200. Inside, the radiation pins 110 are continuously zigzag bent, and one side thereof is provided with an electrode plate 120 for connection to a power source. In addition, the PTC heating element 100 is provided with electrode surfaces on both sides thereof, and is bonded to the radiator 200 with heat and conductive adhesives.

The conventional heating device configured as described above heats air by dissipating heat generated by the PTC heating element 100 connected to a power source through the electrode plate 120 to the outside through the radiator 200. .

However, in the above-described heat generating apparatus using the PTC element, the upper and lower ends of the radiating pins 110 are brazed and fixed in the radiator 200, and the PTC heating element 100 is attached to the radiator 200. Since it goes through the manufacturing process of bonding and fixing, the manufacturing process is complicated, so the time, human and material costs required for manufacturing are relatively high, and it is difficult to secure uniform quality due to assembly errors, resulting in poor product productivity and quality reliability. There is a problem. In addition, since the PTC heating element 100 is exposed to the outside and is highly likely to be damaged by external force, the PTC heating element 100 is a structure in which the PTC heating element 100 is bonded. Even if some of them are damaged, there is a problem that the entire heating device must be discarded because partial replacement or repair is impossible.

On the other hand, in order to improve the above problems, a heat generating device having a groove for disposing a PTC element in a heat dissipation member has been presented in the registered utility model No. 214981 ('heater using positive characteristic thermistor element'), Figure 2a And FIG. 2B shows a perspective view and an exploded perspective view thereof.

2A and 2B, the heat generating apparatus using the PTC element shown in FIG. 2A has a plurality of heat dissipation fins 11 on one side, and a length groove 13 for inserting and fixing the PTC element 1 to be described later on the other side. Upper and lower cases 10 formed of electrically and thermally conductive materials; An insulating sheet (3) disposed to contact an inner surface of the storage groove (13) of the lower case (10); A power connection plate 5 disposed to contact the upper surface of the insulating sheet 3 and having a connector 51 at one side thereof; Electrode surfaces are provided on both sides thereof, and the plurality of PTC elements 1 electrically connected to the inner surface of the recess groove of the upper case 10 and the power connecting plate 5 are coupled to the upper and lower cases 10. It is largely composed of a plurality of clips (8) to provide a fastening force, the power is applied through the connector 51 of the power connection plate 5 and the power connection connector 16 provided on one side of the upper case 10. As a result, the heat generated by the PTC element 1 is radiated through the heat dissipation fins 11 of the upper and lower cases 10 to function as a heater.

However, the above-described conventional heating device has the advantage that the PTC element 1 is fixed to the outside between the upper and lower cases 10 in a sealed state, so that there is no fear of damage due to external force. Since the sealing process for sealing the inside and the process of fastening a plurality of clips 8 for the firm coupling of the case 10 are required, the manufacturing process is still complicated and the disassembly and assembly are easy. There is a problem that could not be. In addition, since both electrode surfaces of the PTC element 1 should be in contact with the power connection plate 5 and the inner groove of the upper case 10 accurately, high processing precision is required, and the upper and lower cases 10 are coupled to each other. Since the radiator structure is a set of radiators, it is difficult to manufacture a layered array structure in which a plurality of radiators are stacked.

Accordingly, the present invention has been made to solve the above problems, the PTC element can be fixed in a non-junction manner while maintaining an electrical connection state with the power electrode by the insulator, the PTC element and the electrode by the elastic force It is an object of the present invention to provide a heat generating apparatus using a PTC element that can maintain a precise connection state and at the same time have a structure that is easy to disassemble and assemble, thereby improving the convenience of the manufacturing process.

1 is an exploded perspective view showing a heat generator using a conventional PTC element.

Figure 2a is a perspective view showing another heat generating device using a conventional PTC element.

2B is an exploded perspective view of FIG. 2A;

Figure 3 is a perspective view showing an embodiment of a heating device using a PTC element according to the present invention.

4 is an exploded perspective view of a part of a heating device using a PTC device according to the present invention shown in FIG.

5 is an exploded perspective view of a heating device using a PTC device according to the present invention shown in FIG.

Figure 6a is a perspective view showing a combined state of the support frame and the leaf spring of the main configuration of the present invention.

6B is an exploded perspective view of FIG. 6A.

7 is a partially exploded perspective view showing the arrangement of the radiator and the PTC element in the heat generator using the PTC element according to the present invention.

8 is a perspective view showing the configuration of another embodiment of a heater using a PTC element according to the present invention.

* Explanation of symbols for the main parts of the drawings

300: radiator 301: upper conductive plate

302: lower conductive plate 303: heat dissipation member

310: electrode plate 320: center insulation plate

330: PTC heating element 340: upper insulating plate

350: support frame 360: leaf spring

370: wire frame 380: side cap

In order to achieve the above object, the present invention provides a heat dissipation means made of a thermally conductive material to effectively dissipate heat in the air, and a predetermined space for accommodating the heat dissipation means is provided therein, and the heat dissipation means includes heat and electricity. A plurality of stacked radiators including thermal and electrically conductive means made of thermal and electrically conductive materials to conduct; At least one first insulating plate inserted between the stacked radiators and formed of a non-conductive material having a through hole formed at a central portion thereof; At least one PTC heating element disposed in the through hole of the first insulating plate and electrically connected to an upper radiator and a lower radiator to generate predetermined heat when power is applied; And it provides a heat generating device using a PTC element comprising a coupling means for coupling the stacked radiator and the first insulating plate.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings appended hereto illustrate embodiments of the invention and, together with the detailed description thereof, serve to understand the characteristics of the invention, and therefore, the invention is to be construed as limited to the matters set forth in such drawings. Is not.

Hereinafter, with reference to the accompanying drawings of Figure 3 will be described in detail a preferred embodiment of the present invention.

Figure 3 is a perspective view showing an embodiment configuration of a heat generating device using a PTC element of the present invention, Figure 4 and Figure 5 is an exploded perspective view showing the disassembled state, in the description of the present embodiment, the two upper and lower radiators Illustrative description will be given of the layered structure.

3 to 5, the heating device using the PTC device according to the present invention, and the first and second radiators 300 and 300 'of the conductive material for effectively dissipating the generated heat in the air; First and second electrode plates 310 and 310 'connected to one side of the first and second radiators 300 and 300', respectively, for connection to a power source; A central insulating plate 320 of a non-conductive material disposed between the first and second radiators 300 and 300 'and having a through hole 320a having a predetermined size in a central portion thereof; The first and second electrodes are inserted into the through hole 320a of the central insulating plate 320 and electrically connected to the first and second radiators 300 and 300 'through upper and lower electrode surfaces thereof. A PTC heating element 330 which generates predetermined heat when a voltage is applied through the plates 310 and 310 '; Upper and lower insulating plates 340 and 340 'of non-conductive material disposed to be in contact with the outside of the first and second radiators 300 and 300', respectively; Upper and lower support frames 350 and 350 'are disposed to face each other on the outer side of the upper and lower insulating plates 340 and 340', and the surfaces facing each other are opened along the length direction and provided with a predetermined space therein. )and; The upper and lower insulating plates are made of an elastic material inserted into the upper and lower support frames 350 and 350 'to be in contact with the outer sides of the upper and lower insulating plates 340 and 340', respectively, and are wavy. First and second leaf springs 360 and 360 'elastically supporting 340 and 340'; First and second wire clips 370 and 370 ', each end of which is connected to the upper and lower support frames 350 and 350' to provide a predetermined clamping force; First and second side caps fitted to both ends of the upper and lower support frames 350 and 350 'fastened by the first and second wire clips 370 and 370' to increase assembly strength ( 380, 380 ').

In the present embodiment, as shown in FIG. 5, the first radiator 300 is disposed on a flat lower conductive plate 302 made of a conductive material and an upper surface of the lower conductive plate 302, and is zigzag. The heat dissipation member 303 continuously bent and the upper conductive plate 301 coupled to the lower conductive plate 302 to surround the upper portion of the heat dissipation member 303. Similarly, the second radiator 300 'includes a lower conductive plate 302', a heat dissipation member 303 ', and an upper conductive plate 301'.

6A and 6B, fastening grooves 350a into which end portions of the first and second wire clips 370 and 370 ′ are inserted are formed at both ends of the upper support frame 350. , The lower support frame 350 'is also the same.

In addition, as illustrated in FIG. 7, a plurality of protrusions 301a are disposed on the upper surface of the upper conductive plate 301 of the radiator 300 at predetermined intervals so that the PTC heating element 330 can maintain its position in the longitudinal direction. Is formed, a plurality of first fixing stops 321 for fixing the longitudinal position of the radiator 300 stacked on the upper and lower ends of the central insulating plate 320 is provided, the both ends of the transverse direction A plurality of second fixing stops 322 for fixing the lateral position of the radiator 300 is provided.

In addition, the central insulating plate 320 and the first and second insulating plates 340 and 340 ′ are preferably made of a synthetic resin material that is highly resistant to high heat and can lower the thermal expansion rate, and the first and second radiators ( In addition to preventing short circuit due to contact of the 300 and 300 ', it serves to maintain the shape and position of the first and second radiators 300 and 300'.

In addition, the side caps (380, 380 ') is made of an insulating material to prevent accidents due to electric shock or short-circuit that may occur during operation, one side of the hole is inserted into the bolt for fixing the device (380a) ) Is provided.

In addition, the upper and lower support frames 350 and 350 'are preferably made of SUS material to minimize deformation and abnormality caused by external fluctuation factors, and the first and second wire clips 370 and 370'. ) Is preferably made of high-strength wire of SUS material.

In the heating device using the PTC element of the present invention configured as described above, when the first and second electrode plates 310 and 310 'are connected to a power source, power is applied to the PTC heating element 330 to start heat generation. do. The generated heat is spread through the upper and lower conductive plates 301 ′ and 301, and is conducted to the heat radiating members 303 and 303 ′ and radiated to the outside. Typically, a blower such as a fan is used to guide the flow of air around the first and second radiators 300 and 303 'for effective heat dissipation.

As described above, the heating device using the PTC element of the present invention does not need to join the heat radiating member 303 constituting the radiator 300 and the upper and lower conductive plates 301 and 302, and the PTC heating element 330. Is non-adherently fixed between the radiators 300 and 300 'by the projection 301a' of the central insulating plate 320 and the upper conductive plate 301 ', thereby simplifying the parts and simplifying the manufacturing process. The cost is reduced, and quality deterioration due to assembly errors is prevented. In addition, since the PTC heating element 330 is not exposed to the outside, there is no fear of damage due to external force, and when some of the PTC heating elements 330 are damaged, it is easy to replace only the damaged PTC heating element 330. I can repair it easily.

In addition, since both electrode surfaces of the PTC element 330 are contacted to the radiators 300 and 300 'by a predetermined elastic force by the first and second leaf springs 360 and 360', high processing accuracy is not required. Accurate connection is achieved without.

On the other hand, the heat generating device using the PTC element of the present invention, since the coupling and fixing of the entire heat generating device is a prefabricated structure made simply by the first and second wire clips (370, 370 '), the radiator 300, the central insulation plate By further stacking the 320 and the PTC heat generating element 330, it is possible to manufacture a heat generating device having various heat generating capacities simply and quickly.

That is, as shown in Figure 7, a plurality of radiators 300, the central insulating plate 320 and the PTC heating element 330 made in the same manner as in the above-described embodiment is alternately stacked, the first length of the suitable length And by fixing using the second wire clip (370, 370 '), it is possible to easily manufacture a heat generating device having the required heat generating capacity.

Meanwhile, in the above-described embodiment, the laminated radiator 300 and the central insulating plate 320 are coupled by the first and second wire clips 370 and 370 ', and the first and second leaf springs 360, 360 ') has been described as being provided with a predetermined elastic force, the present invention is not limited to this, and various other elastic members commonly used in place of the first and second leaf spring (360, 360') It is also possible to provide an elastic force by using a predetermined, so that the first and second wire clips (370, 370 ') and the first and second leaf spring (360, 360') to replace the role of the predetermined itself Using a coupling member having an elastic force of the radiator 300 and the central insulating plate 320 may be combined.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

According to the present invention as described above has the following effects.

(A) Since the radiator is made of a non-bonded structure and the assembly of a PTC element is made of a non-adhesive structure, the parts and manufacturing process are simplified and the manufacturing cost is reduced.

(B) Since the PTC element is not exposed to the outside, damage of the PTC element due to external force is prevented, and in case some of the PTC elements are damaged, only the damaged PTC element needs to be replaced, thus making it easy to maintain the heating device. do.

(C) Since it is a prefabricated structure in which additional stacking of radiators is easy, a plurality of radiators may be additionally installed according to a required heat generation capacity to easily produce a heat generation device having various heat generation capacities.

(D) Since the electrode surface of the PTC element is brought into contact with the radiator outer surface while receiving a predetermined elastic force, accurate connection can be made without requiring high processing precision.

Claims (15)

A heat dissipation means made of a thermally conductive material to effectively dissipate heat into the air, and a predetermined space for accommodating the heat dissipation means is provided therein, and the heat and electric conductive material to conduct heat and electricity to the heat dissipation means. A plurality of stacked radiators comprising heat and electrical conduction means; At least one first insulating plate inserted between the stacked radiators and formed of a non-conductive material having a through hole formed at a central portion thereof; At least one PTC heating element disposed in the through hole of the first insulating plate and electrically connected to an upper radiator and a lower radiator to generate predetermined heat when power is applied; And Coupling means for coupling the stacked radiator and the first insulating plate Heating device using a PTC element comprising a. The method of claim 1, Is attached to one side of the radiator, the heating device using a PTC element further comprises a plurality of power connection means made of an electrically conductive material for connection with an external power source. The method of claim 1, And a resilient force providing means for providing a predetermined resilient force so that the laminated radiator and the first insulating plate are elastically coupled. The method of claim 1, The radiating means of the radiator is a heat generating device using a PTC element which is a heat radiating member continuously bent in a zigzag. The method of claim 4, wherein Thermal and electrical conduction means of the radiator A flat plate bottom conductive plate made of a conductive material, An upper conductive plate coupled to an upper surface of the lower conductive plate to surround an upper portion of the heat dissipation member Heating device using a PTC element comprising a. The method of claim 1, A heating device using a PTC element formed with a projection for maintaining the position of the PTC element on the upper or lower surface of the radiator in contact with the PTC element. The method according to any one of claims 1 to 6, The coupling means First and second support frames arranged to face each other on an outer side of the radiator disposed at the outermost ends of the plurality of stacked radiators; Fastening means for fastening the radiator and the first insulating plate laminated and detachably connected to the upper and lower support frames Heating device using a PTC element comprising a. The method of claim 7, wherein Fastening grooves of a predetermined depth are formed at both ends of the first and second support frames in the longitudinal direction, The fastening means are first and second wire clips, both ends of which are inserted into the fastening grooves of the first and second support frames. Heating device using PTC element. The method of claim 8, And a first and second side caps inserted into both ends of the first and second support frames fastened by the first and second wire clips to increase assembly strength. The method of claim 7, wherein And a plurality of second conductive plates inserted between the first and second support frames and radiators adjacent thereto, the second conductive plates being made of a non-conductive material for insulation from the outside. The method of claim 10, Surfaces facing each other of the first and second support frames are opened along a length direction, and a predetermined space is provided therein, The elastic force providing means is a plate spring made of an elastic material that is inserted into the interior of the first and second support frames so that one side is elastically in contact with the second conductive plate, and bent in a wave shape. Heating device using PTC element. The method of claim 7, wherein And a plurality of first fixing stops provided at both ends of the first insulating plate in the longitudinal direction and for fixing the longitudinal positions of the radiators stacked above and below the first insulating plate. The method of claim 7, wherein And a plurality of second fixing stops provided at both ends of the first insulating plate in the transverse direction and for fixing the transverse positions of the radiators stacked on the upper and lower parts of the first insulating plate. The method of claim 10, And a plurality of third fixing stops provided at both ends of the second insulating plate in the longitudinal direction and for fixing the longitudinal positions of the radiators stacked above and below the second insulating plate. The method of claim 10, And a plurality of fourth fixing stops provided at both ends of the second insulating plate in the lateral direction and for fixing the lateral positions of the radiators stacked on the upper and lower parts of the second insulating plate.