JP3213365U - Thermistor type heater - Google Patents

Abstract

A structure of a thermistor type heater is provided. A thermistor type heater is mainly composed of a thermistor unit, an electrode body, and an insulating housing. The electrode body 20 includes a first electrode plate 21 and a second electrode plate 22. The first electrode plate 21 and the second electrode plate 22 are correspondingly attached to two opposing side surfaces of the thermistor unit, and have a first guide sheet 211 at one end of the first electrode plate 21, and the second electrode plate A second guide sheet 221 is provided at one end of the member 22. The insulating housing 30 joins the thermistor unit 10 and the electrode body 20 by an insert molding method. The insulating housing 30 integrally covers the thermistor unit 10 and the electrode body 20 and exposes only the first guide sheet 211 and the second guide sheet 221 to the outside. Therefore, the service life is extended by keeping the thermistor type heater 1 waterproof. [Selection] Figure 1

Description

  The present invention relates to the structure of an electric heater, and more particularly to the structure of a thermistor type heater.

  Electric heaters are already widely used in daily life. For example, electric air is mainly used for hot air from a daily-use dryer, indoor heater, hand dryer, bathroom dryer, or the like.

  The general usage principle of an electric heater mainly converts electric energy directly into thermal energy and realizes the heating process. Among them, like a thermistor, a resistance electric heater generates heat energy using the resistance of a conductor and heats it. Among them, the resistance value changes as the temperature changes, and the resistance increases as the temperature rises. This is called a positive temperature coefficient (hereinafter referred to as PTC) thermistor.

  Further, the structure of the electric heater of the conventional PTC thermistor is mainly to install one PTC heating module in one metal case and further seal around the metal case with insulating adhesive. So avoid external moisture entering the case. However, the cost of the insulating adhesive of the existing PTC thermistor electric heater is relatively high, and the metal case cannot be sealed tightly due to long-term use or the influence of the environment. In view of the fact that the PTC heating module is rusted and is likely to be corroded or leaked, further improvements are necessary.

Japanese Unexamined Patent Publication No. 2007-90066

In order to solve the drawbacks of the known structure, a first object of the present invention is to provide a thermistor type heater structure that is waterproof and prolongs the service life.
A second object of the present invention is to provide a thermistor type heater structure that simplifies the structure and reduces the overall manufacturing cost.

  In order to solve the above-described object, the present invention provides a thermistor type heater structure. A thermistor unit, an electrode body and an insulating housing are included. The electrode body includes a first electrode plate and a second electrode plate. The first electrode plate and the second electrode plate are correspondingly attached to two opposite side surfaces of the thermistor unit, and the first electrode plate has a first guide sheet at one end, and the first electrode plate has one end at the other end of the second electrode plate. It has two guide sheets. The insulating housing joins the thermistor unit and the electrode body by an insert molding method. The insulating housing integrally covers the thermistor unit and the electrode body and exposes only the first guide sheet and the second guide sheet to the outside.

  Compared with the prior art, the insulating housing of the thermistor type heater of the present invention is made of a heat conductive plastic, and the insulating housing is connected to the thermistor unit and the electrode body using an insert molding method. The insulating housing integrally covers the thermistor unit and the electrode body and exposes only the first guide sheet and the second guide sheet to the outside. Accordingly, it is not necessary to apply an insulating adhesive to the inside or the outer periphery of the insulating housing, so that the insulating adhesive ages and no corrosion or electric leakage occurs. Since the thermistor type heater of the present invention can provide absolute hermeticity to the thermistor unit and the electrode body, the service life can be extended. In addition, since the overall structure is simple, the manufacturing process can be simplified and the overall cost can be reduced.

  According to the structure of the present invention, it is not necessary to apply an insulating adhesive to the inside or the outer periphery of the insulating housing, so that the insulating adhesive ages and does not cause corrosion or leakage. Moreover, since the absolute sealing property can be provided to the thermistor unit and the electrode body, the service life can be extended. In addition, since the overall structure is simple, the manufacturing process can be simplified and the overall cost can be reduced.

It is the three-dimensional external appearance schematic of the thermistor type heater of this invention. 1 is a schematic exploded view of a thermistor heater according to the present invention. It is assembly sectional drawing of the thermistor type heater of this invention. 3 is an application schematic diagram of a thermistor heater according to the present invention.

  Hereinafter, the structure, features, and effects of the present invention will be described in detail with reference to the best embodiments and drawings. The accompanying drawings are for reference and explanation and do not limit the present invention.

  FIGS. 1 to 3 are a three-dimensional appearance schematic diagram, a three-dimensional exploded schematic diagram, and an assembled cross-sectional view, respectively, of the thermistor heater of the present invention. As shown in FIG. 1, the thermistor heater 1 of the present invention includes one thermistor unit 10, one electrode body 20, and one insulating housing 30. The thermistor unit 10, the electrode body 20, and the insulating housing 30 are joined together by an insert molding method. That is, the insulating housing 30 seals the thermistor unit 10 and the electrode body 20 inward. The structure of the thermistor type heater 1 will be described in more detail later.

  As shown in FIG. 2, in this embodiment, the thermistor unit 10 is provided with one positive temperature coefficient (abbreviated as PTC, Positive Temperature Coefficient) thermistor. Moreover, since the principle and structure of the thermistor unit 10 are conventional techniques, they will not be mentioned again here.

  The electrode body 20 includes one first electrode plate 21 and one second electrode plate 22. The first electrode plate 21 and the second electrode plate 22 are correspondingly attached to two opposing side surfaces of the thermistor unit 10. Further, one first guide sheet 211 is provided at one end of the first electrode plate 21, and one second guide sheet 221 is provided at one end of the second electrode plate 22.

  The electrode body 20 is electrically connected to the thermistor unit 10, and the first guide sheet 211 and the second guide sheet 221 are electrically connected to one external power so that the thermistor unit is electrically connected. 10 provides the power required for operation.

  As the best embodiment, the first electrode plate 21 and the second electrode plate 22 each have one L-shape. Further, the first guide sheet 211 and the second guide sheet 221 are projected and extended from one side of the thermistor unit 10 in a state where they are installed crossing each other.

  Further, as the best embodiment of the insulating housing 30, the insulating housing 30 is constituted by a heat conducting plastic. The insulating housing 30 connects the thermistor unit 10 and the electrode body 20 by an insert molding method. More specifically, the insulating housing 30 integrally covers the thermistor unit 10 and the electrode body 20, and only the first guide sheet 211 and the second guide sheet 221 are exposed to the outside. The thermistor-type heater 1 of the present invention can be used for products that generate heat, such as rice cookers, water tank heaters, and curling irons. Conduct heat up to the product outlet. Specifically, as shown in FIG. 3, the thermistor unit 10 and the electrode body 20 fill the internal space of the insulating housing 30. That is, the inner or outer peripheral edge of the insulating housing 30 can provide absolute hermeticity to the thermistor unit 10 and the electrode body 20 without applying an insulating adhesive.

  Further, FIG. 4 is an application schematic diagram of the thermistor type heater of the present invention. As shown in the figure, in the first embodiment of the present invention, the thermistor type heater 1 further includes one first heat radiator 40 and one second heat radiator 50. The first heat radiating body 40 and the second heat radiating body 50 are correspondingly attached to two opposing side surfaces of the insulating housing 30.

  As the best embodiment, each of the first radiator 40 and the second radiator 50 is one radiating fin set. More specifically, the first heat radiating body 40 includes one first heat conducting plate 41 attached to one side surface of the insulating housing 30 and one first wavy plate installed on the first heat conducting plate 41. Fins 42. The second heat radiating body 50 includes one second heat conducting plate 51 to be attached to another side surface of the insulating housing 30 and one second wavy fin installed on the second heat conducting plate 51. 52. However, when actually implementing, the form of the first heat radiator 40 and the second heat radiator 51 is not limited thereto.

  The detailed description of the present invention according to the above embodiments does not limit the scope of the present invention. Even if a person familiar with the present technology makes changes or adjustments within the scope of the present invention, the important significance of the present invention is not lost, and is included in the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Thermistor type heater 10 Thermistor unit 20 Electrode body 21 First electrode plate 211 First guide sheet 22 Second electrode plate 221 Second guide sheet 30 Insulating housing 40 First heat radiator 41 First heat conducting plate 42 First wave shape Fin 50 Second radiator 51 Second heat conducting plate 52 Second wave fin

Claims (8)

Including thermistor unit, electrode body and insulating housing,
The electrode body includes one first electrode plate and one second electrode plate, and the first electrode plate and the second electrode plate correspond to the two opposite side surfaces of the thermistor unit. And having one first guide sheet at one end of the first electrode plate, having one second guide sheet at one end of the second electrode plate, and
The insulating housing couples the thermistor unit and the electrode body by an insert molding method, the insulating housing integrally covers the thermistor unit and the electrode body, and the first guide sheet and the second electrode sheet. The structure of the thermistor type heater, wherein only the two guide sheets are exposed to the outside.   The thermistor unit according to claim 1, wherein the thermistor unit is a positive temperature coefficient thermistor.   The structure of the thermistor heater according to claim 1, wherein each of the first electrode plate and the second electrode plate has one L-shape.   4. The thermistor-type heater structure according to claim 3, wherein the first guide sheet and the second guide sheet protrude and extend from one side of the thermistor unit in a state where they are installed crossing each other.   The structure of the thermistor heater according to claim 1, wherein the thermistor unit and the electrode body fill an internal space of the insulating housing.   The first heat radiator and the second heat radiator include the first heat radiator and the second heat radiator, and the first heat radiator and the second heat radiator are correspondingly attached to two opposite side surfaces of the insulating housing. The structure of the thermistor type heater according to claim 1.   The structure of the thermistor heater according to claim 6, wherein each of the first heat radiator and the second heat radiator is a heat radiating fin set. The first heat radiating body includes one first heat conducting plate attached to one side surface of the insulating housing and one first wavy fin installed on the first heat conducting plate, and the second heat radiating plate. The body includes one second heat conducting plate to be attached to another side surface of the insulating housing and one second corrugated fin installed on the second heat conducting plate. The structure of the thermistor type heater described.