KR200235499Y1 - Heater Using Positive Temperature Coefficient Thermister - Google Patents

Abstract

The present invention relates to a heater using a positive characteristic thermistor element to form a joint fixing portion in the case having a PTC element to mechanically protect the PTC element, for this purpose, the upper and lower cases combined with a plurality of heat radiation fins, and A heater using a positive characteristic thermistor element formed by sequentially combining an insulating sheet, an electrode plate, and a PTC element guide mounted with a PTC element in an upper case and a lower case, wherein both sides of the upper case are joined to the lower case. An upper joining fixing part formed along a longitudinal direction, a lower joining fixing part formed to correspond to the upper joining fixing part on the lower case, and coupled to both side surfaces of the upper and lower cases to press the upper and lower cases together. Characterized in that it consists of a fixing means for fixing, thereby inserting the PTC element and other parts to the product As well as to keep on top of the process reduce the damage prevention and the defect rate of the PTC element, and enhance the fixation of the product, thereby improving the reliability and stability of the product. In addition, by installing a fixing means in the case to block foreign matter flowing into the case, and by installing a ceramic plate that does not deteriorate according to the surrounding environment in order to ensure electrical insulation to the heater body, to prevent loss of insulation due to long-term use The heat dissipation effect of the product can be increased and used semi-permanently.

Description

Heater Using Positive Temperature Coefficient Thermister

The present invention relates to a heater using a positive characteristic thermistor element (hereinafter, referred to as PTC-positive temperature coefficient), and in particular, mechanically protects the PTC element to increase the holding force, facilitate the insertion process, and thereby the electrical conductivity and The present invention relates to a heater using a positive characteristic thermistor element to increase thermal conductivity.

As is generally known, the positive characteristic thermistor element (PTC) has a characteristic in which the electrical resistance increases rapidly above the Curie temperature. Therefore, when a voltage is applied, the magnetic temperature at which the positive characteristic thermistor becomes a constant temperature regardless of the ambient temperature. There is a control function.

By using this function, the field of application is being widened in recent years as a heating element, and the heating heater can be divided according to the joining of the heat sink fin, which is a metal plate, to dissipate the heat generated by the proper collection of these thermistors.

As such, there is a bonding method for coupling the radiating fins to the heater and a bonding method for dividing the radiating fins up and down.

As shown in FIGS. 1A and 1B, the electrons include a PTC element guide 2 having a PTC element 2a mounted therein, an electrode plate 3 having an electrode connector 3a formed therein; The insulating sheet 4 is coupled, and the heat dissipation plate 5 is coupled to the coupling body outer portion 1, and the coupling body 1 is provided with a power supply connector 1a.

In addition, the latter has been filed in Utility Model Application No. 99-3903 already selected by the present applicant.

As shown in FIGS. 2A and 2B, the heater 10 using the positive specific thermistor element of the above-described prior art forms a plurality of heat dissipation fins 11a and a PTC element guide 13 coupled to a plurality of PTC elements at one central portion thereof. Cases 11 and 12 are provided to be built-in, and a plurality of cases 11 and 12 are provided to stack the insulating sheet 14, the power connecting plate 15, the end closure and the insulating shield 16. In addition, one contact point of the PTC element 13a is connected to the power connecting plate 15 and the other contact point is embedded in the plurality of upper and lower cases 11 and 12 so as to contact the cases 11 and 12. The case 11 and 12 are assembled to face each other by fastening and fixing with a plurality of clips 17.

In addition, a silicone adhesive layer 18 is formed on the cases 11 and 12 to seal the cases 11 and 12.

However, according to the former and the latter technical configuration, it is very difficult to obtain a uniform quality because the junction of the electrode surface of the heat radiating fin and thermistor element is made of a heat-resistant conductive adhesive, the production process is complicated, and the externally exposed PTC device operates. After this is completed, there is a fear of a short circuit due to condensation due to a temperature difference with the surroundings. In addition, since the former is a configuration in which the PTC element guide and other components on which the PTC element is mounted are coupled to the coupling body, the insertion process of the components is complicated and very difficult. There was a problem.

In addition, in the latter configuration, the insulation sheet and the silicon adhesive layer were used to seal the case. However, the insulation sheet and the silicide adhesion have a long time when moisture is penetrated into the case when the adhesive force is lost due to the external environment. In addition, the insulation sheet is not only damaged, but also adversely affects the PTC device, so that heat generated from the PTC device is transferred to the heat radiation fins and heat loss occurs.

Therefore, the present invention is to solve the conventional problems as described above, an object of the present invention, by forming a bonding fixing portion in the case instead of the silicone adhesive layer used to seal the case in order to electrically and mechanically protect the PTC element In addition, the present invention provides a heater using a specific characteristic thermistor element to simplify the process of inserting a PTC element into a product, thereby preventing damage to the PTC element and lowering a defective rate to improve product reliability.

Another object of the present invention, by fixing the fixing means formed in a predetermined length along the longitudinal direction of the case to the case, to block the foreign material flowing into the case and to improve the assembly workability of the product and easy to disassemble The present invention provides a heater using a thermistor element.

Another object of the present invention is to use a ceramic plate that does not deteriorate according to the surrounding environment of the insulating sheet installed in the case, to prevent the loss of insulation due to long-term use to improve the thermal conductivity of the product and to use semi-permanently It is to provide a heater using a characteristic thermistor element.

In order to achieve the above object, the heater using the high-performance thermistor element of the present invention includes a top and bottom cases to which a plurality of heat dissipation fins are coupled, and an PTC and a PTC sheet including an insulating sheet, an electrode plate, and a PTC element in the top and bottom cases. A heater using a positive characteristic thermistor element formed by sequentially combining element guides, comprising: an upper side joining fixing part formed along a longitudinal direction on both joining surfaces of the upper case joined to the lower case, and the upper part on the lower case; The lower side bonding fixing portion formed to correspond to the side bonding fixing portion, and the upper and lower case is characterized in that it consists of fixing means for pressing and fixing the upper and lower cases to each other.

Figure 1a is an exploded perspective view showing a configuration according to an embodiment of a heater using a conventional positive characteristic thermistor element.

Figure 1b is a perspective view for coupling the heat sink to the combined body of Figure 1a,

Figure 2a is an exploded perspective view showing a configuration according to another embodiment of a heater using a conventional positive characteristic thermistor element.

Figure 2b is a longitudinal cross-sectional view in the width direction in the coupled state of Figure 2,

Figure 3 is an exploded perspective view showing a configuration according to an embodiment of a heater using a positive characteristic thermistor element of the present invention.

Figure 4a is a longitudinal cross-sectional view in the width direction in the coupled state of the present invention,

4B is an enlarged cross-sectional view of portion A of FIG. 4A;

4C is an enlarged cross-sectional view of portion B of FIG. 4A;

Figure 5a is a longitudinal longitudinal cross-sectional view in the coupled state of the present invention.

5B is an enlarged cross-sectional view of portion C of FIG. 5A.

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

100: main body 200: upper case

200a: upper junction fixing part 300: lower case

300b: lower junction bonding part 400: PTC device guide

400a: fixed guide coupling portion 500: fixed guide

600: PTC element 700: electrode plate

800: ceramic plate 900: fixing means

Hereinafter, a heater using a positive characteristic thermistor element according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is an exploded perspective view showing a configuration according to an embodiment of the heater using the positive characteristic thermistor element of the present invention, Figure 4a is a longitudinal cross-sectional state diagram in the combined state of the present invention, Figure 4b is A of Figure 4a 4A is an enlarged cross-sectional view of portion B of FIG. 4A, FIG. 5A is a longitudinal longitudinal cross-sectional view of the coupling state of the present invention, and FIG. 5B is an enlarged cross-sectional view of portion C of FIG. 5A.

As shown in Figures 3 to 5a, b, the heater body 100 using the positive characteristic service element is the upper case 200, the upper side bonding fixing portion (200a), the heat radiation fins (201) (301), PTC device 600, PTC device guide 400, fixed guide 500, fixed guide coupling portion 400a, electrode plate 700, electrode connector 700a, ceramic plate 800, lower case 300 ), The case connector 300a, the lower side bonding fixing portion (300b), and the fixing means (900).

The lower case 300 has a plurality of heat dissipation fins 301 protruding at equal intervals so as to dissipate heat is installed on the lower surface of the lower case 300.

The lower side joining fixing part 300b is formed to correspond to the upper side joining fixing part 200a when combined with the upper case 200 along the longitudinal direction of the case on both upper and lower joining surfaces of the lower case 300. It is.

The ceramic plate 800 is used as an insulating sheet so as to maintain an electrically insulated state with the upper and lower cases 200 and 300 regardless of the surrounding environment, and at the same time, the ceramic plate 800 is used as the ceramic plate 800. The upper case is installed above the lower case 300.

The electrode plate 700 is formed on the ceramic plate 800 at the same time the electrode connector 700a is connected to the power source so that electricity is supplied.

The PTC device guide 400 is mounted on the electrode plate 700 while mounting the PTC device 600 at a constant temperature regardless of the ambient temperature when a voltage is applied.

In addition, the fixing guide 500 is coupled to any one end of the PTC device guide 400 so as to couple the PTC device guide 400 in the upper, lower case 200, 300.

In addition, the fixing guide coupling part 400a is formed at one end of the PTC device guide 400 to fix the fixing guide 500 to the PTC device guide 400.

The upper case 200 has a plurality of heat dissipation fins 201 protruding at equal intervals so as to dissipate heat is installed on the upper surface of the upper case 200.

The upper joining fixing parts are formed on both joining surfaces of the lower end of the upper case so as to correspond to the lower joining fixing part along the longitudinal direction of the upper case.

The fixing means 900 is the lower case 300, the ceramic plate 800, the electrode plate 700, the PTC element guide 400, the upper case 200 is installed in a stack to be pressed and fixed in this state The upper and lower cases 200 and 300 are coupled to both sides.

In addition, the fixing means 900 is formed with a predetermined length along the longitudinal direction of the upper and lower cases 200 and 300 and at the same time is made of a fixing clip of the forming memory alloy.

In addition, the upper and lower cases 200 and 300 are made of a metal material having excellent electrical and thermal conductivity.

In addition, a case connector 300a is connected to a power source so that electricity is supplied to one end of the lower case 300.

Then, the operation of the heater using the positive characteristic thermistor element according to an embodiment of the present invention having the above configuration will be described in more detail with reference to FIGS. 3 to 5.

First, as shown in FIGS. 3 and 5A and B, the PTC device 600 is formed by coating a silver electrode on a wide surface of both sides, and the PTC device 600 generates heat when power is applied.

The heater body 100 using the positive characteristics thermistor element of the present invention is a PTC element guide having a PTC element 600 mounted in the upper case, the lower case 200, 300 is coupled to a plurality of heat dissipation fins 201, 301 ( 400).

At this time, since the fixing guide coupling part 400a is formed to fix the fixing guide 500 at any one end of the PTC device guide 400, the fixing guide coupling part 400a is connected to the PTC device guide 400. Form at one end.

In this state, the fixing guide coupling part 400a is fixed to the fixing guide 500.

Here, the ceramic plate 800, which is an insulating sheet capable of maintaining an electrically insulated state with the upper and lower cases 200 and 300, is installed on the lower case 300, regardless of the surrounding environment.

The ceramic plate 800 is installed on the lower case 300, the electrode plate 700 is installed on the ceramic plate 800, and in this state, the PTC device guide 400 is installed in a stack.

As shown in Figure 4a, bc, the ceramic plate 800, the electrode plate 700, the PTC element guide 400 is bonded to the upper and lower cases 200 and 300 by lamination and then the upper case ( The upper joining fixing part is formed along the longitudinal direction of the case on both joining surfaces of the 200 and 300, and the lower joining fixing part is formed in the lower case so as to correspond to the upper joining fixing part. Join the government to the lower side joint fixing part in correspondence with each other.

In this state, both sides of the upper and lower cases are fitted into the fixing clip, which is the fixing means 900, to fix the pressure.

At this time, the fixing means 900 is made of a fixing clip of the shape memory alloy, by the fixing clip to secure the PTC element 600 and other components in the upper and lower cases 200 and 300 without flow, and safely Enable electrical conduction.

When power is applied after connecting power to the electrode connector 700a and the case connector 300a, power is applied to both electrodes of the PTC device 600 to start the heating and the upper and lower cases 200 and 300. The conductive heat is dissipated to the outside by the heat dissipation fins 201 and 301.

Of course, when a separate fan (not shown) for inducing air flow is provided, the heat can be used more efficiently.

In this way, by forming the upper and lower joint fixing part for coupling and fixing the PTC device 600 and other components in the upper and lower cases, the insertion process is made mechanically without flow and breakage to increase the fixing force, and electrically Can maximize heat conduction efficiency by safe electricity supply.

In addition, the fixing clip for fixing the case is installed along the length of the case to prevent moisture or dust and foreign matter from entering the case.

The present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be apparent to those who have

As described above, according to the heater using the positive characteristic thermistor element according to the present invention,

By forming the junction fixing part in the case having the PTC element, it is easy to insert the PTC element and other parts into the product, thereby improving the assembly process of the product, preventing damage of the PTC element, and improving the defective rate. Improve the reliability of the product and thereby improve the reliability of the product. Also, by installing the fixing means along the length of the case in the case, it prevents foreign substances from entering the inside of the case, and also provides electrical insulation to the heater body. In order to ensure the installation of a ceramic plate that does not deteriorate according to the surrounding environment, it is possible to prevent the loss of the insulating member by preventing damage to the insulating member due to long time use, and to increase and semi-permanently use the heat dissipation effect of the product.

Claims (4)

In the heater using a positive characteristic thermistor element formed by sequentially combining the upper and lower cases combined with a plurality of heat radiation fins, the insulating sheet, the electrode plate and the PTC element guide mounted with the PTC element in the upper and lower cases, An upper side joining fixing part formed along a longitudinal direction on both joining surfaces of the upper case joined to the lower case, A lower side bonding fixing unit formed in the lower case to correspond to the upper side fixing fixing unit, The heater using the positive characteristic thermistor element is coupled to the upper, lower case both sides and made of a fixing means for pressing and fixing the upper and lower cases to each other. The method of claim 1, A fixing guide installed at one end of the PTC device guide coupled to the upper and lower cases to fix and fix the PTC device guide to the upper and lower cases; A heater using a positive characteristic thermistor element, characterized in that the fixing guide coupling portion is formed at one end of the PTC element guide to fix the fixing guide to the PTC element guide. The method of claim 1, Insulation sheet coupled between the lower case and the electrode plate is a heater using a positive thermistor element, characterized in that made of a ceramic plate. The method of claim 1, The fixing means is a heater using a positive characteristic thermistor element, characterized in that consisting of a fixed clip of the shape memory alloy.