KR20050017366A - Heater using positive temperature coefficient thermistor - Google Patents

Abstract

PURPOSE: A heater using a PTC thermistor is provided to improve the conductivity of heat or electricity, to minimize the failure rate and to prevent breakage of the heater by bonding the radiating fin to the guide with the adhesive and sealing the PTC thermistor. CONSTITUTION: A heating body is formed in a heater(1) by integrating plural PTC thermistors(4), and a guide(2) is formed in the heater to load the PTC thermistors. First opening parts(2a) are formed in the guide, and radiating fins(3) are bonded and fixed at both sides of the guide in which the PTC thermistors are installed by using an adhesive(6). The I-shaped structure is formed in the longitudinal section of the guide, and the inner thickness of the guide is less than the thickness of the PTC thermistor. The adhesive is infiltrated into a second opening part formed in the guide to firmly combine the radiating fin with the guide.

Description

Heater using static thermistor element {HEATER USING POSITIVE TEMPERATURE COEFFICIENT THERMISTOR}

The present invention relates to a heater to use a POSITIVE TEMPERATURE COEFFICIENT THERMISTOR (hereinafter, abbreviated as 'PTC') device,

More specifically, by inserting a PTC element into the guide using a guide and bonding the heat radiation fins using adhesive on both sides, the PTC element and the adhesive are sealed to the outside, thereby mechanically and electrically protecting the PTC element to the heater. It prevents damages in advance and minimizes the defective rate, and mechanically protects the PTC device to enhance the fixing force and facilitate the insertion process to increase the electrical conductivity and thermal conductivity, and to simplify the insertion process of the PTC device. The present invention relates to a heater using a static thermistor element to improve the assembly process for the overall product, thereby improving the reliability of the heater as a whole, and maximizing the satisfaction of using the applied product.

In general, the static thermistor element has a characteristic that the electrical resistance rises sharply above the Curie temperature. Therefore, when the voltage is applied, the static thermistor element has a magnetic temperature control function in which the static thermistor becomes a constant temperature in parallel with the ambient temperature. .

By using the above 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 dissipation fin which is a metal plate so as to dissipate the heat generated by collecting a proper number of static thermistors.

There is a bonding method for bonding the heat dissipation fins to the heater and a method of dividing the heat dissipation fins into upper and lower parts, and the bonding method by dividing the heat dissipation fins into upper and lower parts as shown in FIG. 1 as of June 25, 1996. A ceramic heating device has been proposed in a publication (Domestic Utility Model Application No. 96-17391) published on March 30, 1998 (Domestic Utility Model Publication No. 98-4178).

That is, as shown in Figure 1, the ceramic heating device is composed of the left and right heat sink 10, 20 and the heat radiation fin 30, PTC element 40 and the terminal 50, the heat radiation fin 30 In the case of joining by dividing the upper and lower parts, it is very difficult to obtain uniform quality due to the heat-resisting adhesive bonding the electrode surface of the heat dissipation fin 30 and the PTC element 40, and the PTC element exposed to the outside is completed after the operation is completed. Condensation may occur due to a temperature difference with the surroundings, causing a short circuit.

Therefore, in the case of joining the heat radiation fins conventionally divided up and down, the damage to the heater is generated and the defective rate is increased, which limits the efficiency to some extent, and the electrical conductivity and thermal conductivity are not good, so the reliability of the heater as a whole is high. There is always a problem that is lowered and the satisfaction of using the application is minimized.

The present invention has been made to solve the problems of the prior art as described above has the following object.

According to the present invention, when a PTC element is inserted into a guide using a guide and a heat dissipation fin is bonded to the both sides using an adhesive, the PTC element and the adhesive are sealed to the outside, thereby mechanically and electrically protecting the PTC element, thereby damaging the heater. It is an object of the present invention to provide a heater using a static thermistor element which prevents defects in advance and minimizes a defective rate.

Another object of the present invention is to mechanically protect the PTC device to increase the fixing force and to facilitate the insertion process to increase the electrical conductivity and thermal conductivity, and to improve the assembly process for the entire product by the simple insertion process of the PTC device. It is to provide a heater using a characteristic thermistor element.

Still another object of the present invention is to provide a heater using a static thermistor element which improves the reliability of the heater as a whole and maximizes the satisfaction of using the same.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, in the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

The following terms are terms set in consideration of functions in the present invention, which may vary depending on the intention or custom of the producer, and the definitions should be made based on the contents throughout the present specification.

First, as shown in the accompanying drawings, Figures 2 to 5, Figure 2 is an exploded perspective view showing for explaining the configuration of the present invention, Figure 3 is a longitudinal longitudinal section for showing the combined state of the heater according to the present invention 4 is a side view illustrating a coupling state of a heater according to the present invention, and FIG. 5 is an enlarged cross-sectional view taken along line AA of FIG. 4 according to the present invention.

That is, according to the present invention, in the heater using the PTC element so as to integrate a plurality of PTC elements to form a heating element, the heater 1 includes a plurality of first opening tools 2a to mount the PTC element 4 thereon. The guide 2 formed is provided, and the both sides of the guide 2 on which the PTC element 4 is mounted are joined by an adhesive 6 so that the heat radiation fins 3 are easily adhered and fixed.

In the longitudinal cross-sectional state of the guide 2, the " I " shaped structure 2b and the inner thickness of the guide 2 are formed smaller than the thickness of the PTC element 4.

In addition, the position fixing protrusion 2d of the guide 2 is displaced in one direction when the heat dissipation fins 3 are coupled and fixed, and thus the contact between the PTC element 4 and the heat dissipation fins 3 is lost, and electrical function is lost. In order to prevent that, it is made larger than the inner thickness and made smaller than the thickness of the PTC element (4).

The heat dissipation fin 3 and the guide 2 are formed by forming a second opening tool 2c into the guide 2 through which the adhesive 6 can be introduced so that the fixing can be secured by the adhesive 6.

On the other hand, in the configuration of the heater using the PTC element of the present invention can be variously modified and can take various forms.

It is to be understood, however, that the present invention is not limited to the specific forms referred to in the above description, but rather includes all modifications, equivalents and substitutions within the spirit and scope of the invention as defined by the appended claims. It should be understood to do.

That is, the heater 1 of the present invention having the above structure and configuration is composed of a guide 2, a PTC element 4, a heat dissipation fin 3, a terminal 5, and an adhesive 6, and the guide. In (2), an insulating member having excellent insulation and heat resistance is used, and a plurality of first opening tools 2a are provided to insert and mount the PTC element 4 therein.

In the longitudinal cross-sectional state of the guide 1, the “ I ” shaped structure 2b is formed so that the heat dissipation fins 3 can be easily fixed. Preferably, the heat dissipation fins 3 is made of a metal material having excellent thermal conductivity. .

In addition, the heat dissipation fins 3 are formed by brazing a metal plate on a plurality of heat dissipation fins protruding at equal intervals, and together form a terminal 5 connected to a power source to supply electricity, wherein the heat dissipation fins 3 and the terminals are formed. (5) is fixed by a mechanical bonding method, the terminal (5) is made of a metal material excellent in electrical conductivity.

The heater 1 of the present invention having the above-described structure and configuration has a silver electrode coated on a wide surface of both sides of the PTC element 4, and thus generates heat when power is applied to the PTC element 4.

In order to couple and fix the heat radiation fins 3 in the guides 2 constituting the heater 1, an adhesive 6 is applied to a surface on which the heat radiation fins 3 abuts.

The PTC element 4 is inserted in the site of the first opening tool 2a formed in the guide 2 in the state of being bonded and fixed by the adhesive 6, and the insertion of the guide 2 is completed in the state where the insertion is completed. After the adhesive 6 is applied to the surface where the other heat dissipation fins 3 abut, the other heat dissipation fins 3 are coupled and fixed.

Here, when the adhesive 6 is applied, the adhesive 6 applied to both surfaces of the guide 2 is inserted into the second opening tool 2c in the guide 2, so that the adhesive opening 6 is applied to the second opening tool 2c. Through the coupling, which will increase the fixing effect of the guide (2) and the heat radiation fin (3).

In addition, the guide 2 is provided with a plurality of positioning fixing projections 2d in the vertical direction of the electrode surface of the PTC element 4, the positioning fixing projections 2d of the guide 2 is a heat radiation fin (3) ) Is biased in one direction when the coupling is fixed, the contact between the PTC element 4 and the heat dissipation fin (3) may be lost, so that the electrical function may be lost, in order to prevent this, the projected size is larger than the inner thickness It is formed to be smaller than the thickness of the PTC element 4 to be used for fixing the position of the heat radiation fin (3).

When the power source is connected to the terminal 5 of the heater 1 to be applied, power is applied to both side electrodes of the PTC element 4 to start heat generation, and at this time, heat radiation fins formed on both sides of the heater 1 It is conducted to 3) and heat is radiated to the outside.

Of course, when a separate fan (not shown) or the like is provided around the heater 1 to induce air flow, the heat dissipated above may be used more efficiently.

Finally, in the heater 1 of the present invention made as described above, in the longitudinal cross-sectional state of the guide 2, the structure 2b of the " I " shape and the inner thickness of the guide 2 are the PTC elements 4 It is formed to be smaller than the thickness of), which is made of a " I " shaped structure (2b) in the longitudinal cross-sectional state of the guide (2) on which the PTC element (4) is mounted, so that the insulation distance is increased and bidirectional at the time of moisture penetration. The electrical short circuit can be prevented in advance, and the position fixing protrusion 2d of the guide 2 is formed to prevent it from being biased in one direction to facilitate electrical bonding, as well as the adhesive 6 By assembling the second opening tool (2c) when the solid adhesion is made to reduce the loss of adhesion even if the PTC element 4 and the adhesive 6 is used for a long time by a stable sealing with the outside.

As a result, the PTC element 4 can be cut off from the outside to prevent condensation, and also to prevent breakage of the PTC element 4, thereby minimizing the defective rate and improving overall reliability of the PTC element 4. The simple insertion process will improve the overall assembly process.

As described above, in the present invention, when the PTC element is inserted into the guide using a guide and the heat dissipation fin is bonded to the both sides using an adhesive, the PTC device and the adhesive are sealed to the outside, thereby mechanically and electrically connecting the PTC device. It has the effect of preventing damage to the heater in advance, and the effect of minimizing the defective rate, and mechanically protecting the PTC element to increase the fixing force and facilitate the insertion process, thereby increasing the electrical conductivity and thermal conductivity. In addition, due to the effect that the assembly process for the entire product is improved by the simple insertion process of the PTC device, the overall reliability of the heater is improved, and the use satisfaction can be maximized by using the same. It is obvious that this is a very useful invention.

1 is a front configuration diagram showing a conventional ceramic heating apparatus;

Figure 2 is an exploded perspective view showing to explain the configuration of the present invention,

Figure 3 is a longitudinal cross-sectional view showing the coupling state of the heater according to the present invention,

Figure 4 is an exemplary side view showing a combined state of the heater according to the present invention,

5 is an enlarged cross-sectional view taken along the line A-A of FIG.

<Description of the code | symbol about the principal part of drawing>

1: heater 2: guide

2a: 1st opening tool 2b: Structure of "I" shape

2c: 2nd tool 2d: Position fixing protrusion

3: heat sink fin 4: PTC element

5: terminal 6: adhesive

Claims (4)

In the heater using the PTC element to integrate a large number of PTC elements to form a heating element, the heater 1 includes a guide 2 having a plurality of first opening tools 2a to mount the PTC element 4 thereon. ), And the both sides of the guide 2 on which the PTC element 4 is mounted are coupled by an adhesive 6 so that the heat radiation fins 3 are easily adhered and fixed. Used heater. The method of claim 1, In the longitudinal cross-sectional state of the guide 2, the " I " shaped structure 2b and the inner thickness of the guide 2 are formed to be smaller than the thickness of the PTC element 4. Used heater. The method of claim 1, The position fixing protrusion 2d of the guide 2 is prevented from losing electrical function due to the contact between the PTC element 4 and the heat dissipation fin 3 when the heat dissipation fin 3 is biased in one direction when the heat dissipation fin 3 is coupled and fixed. In order to form larger than the inner thickness in order to form a smaller than the thickness of the PTC element (4) heater using a thermistor element. The method of claim 1, The heat dissipation fin 3 and the guide 2 are formed by forming a second opening tool 2c into the guide 2 through which the adhesive 6 can be introduced so that the fixing is secured by the adhesive 6. Heater using a static thermistor characterized in that.