CN220234988U

CN220234988U - PTC heater

Info

Publication number: CN220234988U
Application number: CN202321959032.5U
Authority: CN
Inventors: 徐伟; 邵华; 付梅燕; 顾君君; 朱赛月
Original assignee: Shanghai Pake Thermistor Ceramics Co ltd
Current assignee: Shanghai Pake Thermistor Ceramics Co ltd
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2023-12-22
Anticipated expiration: 2033-07-25

Abstract

The utility model discloses a PTC heater, which comprises a PTC heating core body and a heat dissipation plate, wherein a pipe body is arranged on the heat dissipation plate, the PTC heating core body is fixedly arranged in the pipe body, a temperature controller and a fuse are fixedly arranged on the upper surface of the pipe body, and a wire of the PTC heating core body is led out after being connected with the temperature controller and the fuse in series and is connected with an external power supply. A temperature sensor is arranged at an included angle formed between the side surface of the PTC heating core body and the upper surface of the radiating plate. The utility model overcomes the defects of the prior art and can realize the high-precision temperature monitoring of the temperature controller to the PTC heater.

Description

PTC heater

Technical Field

The utility model relates to the technical field of electric heating, in particular to a heater, and specifically relates to a PTC heater.

Background

PTC heaters are widely used in various items requiring heating because of their constant temperature self-adjustment and resistance to dry heating. The PTC heater is composed of PTC heating ceramic elements, electrode plates, insulating materials, a tube body, heat dissipation strips and other parts. Covering the two sides of the PTC heating ceramic element with electrode plates, wrapping the PTC heating ceramic element with insulating materials, then plugging the PTC heating ceramic element into the pipe body, bonding the heat dissipation strips on the surface of the pipe body, and after the PTC heating ceramic element is electrified through the electrode plates, heating the PTC heating ceramic element to transfer heat energy out through the pipe body and the heat dissipation strips in sequence.

In order to control the temperature of the PTC heater, a thermostat is generally installed at a side of the heater housing, but the installation position of the thermostat and the thermal contact between the thermostat and the heater both affect the reaction speed of the thermostat. Therefore, the temperature tested by the temperature controller of the conventional PTC heater is not the actual surface temperature of the PTC heater, and the actual surface temperature of the PTC heater cannot be fed back in time, so that the reaction is delayed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the PTC heater, overcomes the defects of the prior art, has reasonable design and can realize the high-precision temperature monitoring of the temperature controller on the PTC heater.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

the utility model provides a PTC heater, includes PTC heating core and heating panel, is equipped with the body on the heating panel, PTC heating core fixed mounting is in the body, body upper surface fixed mounting has temperature controller and fuse, the wire of PTC heating core draws forth and links to each other with external power source after establishing ties with temperature controller and fuse.

Preferably, the heat dissipation plate and the pipe body are of an integrated structure.

Preferably, the heat dissipation plate is detachably connected with the pipe body.

Preferably, a temperature sensor is arranged at an included angle formed between the side surface of the pipe body and the upper surface of the heat dissipation plate.

Preferably, the upper surface of the pipe body is fixedly provided with a temperature control box, the temperature controller and the fuse are both arranged in the temperature control box, the side surface of the temperature control box is fixedly provided with an elastic claw, and the temperature control box is fixedly clamped on the pipe body through the elastic claw.

Preferably, the side surface of the temperature control box is fixedly provided with a limiting elastic claw, and the temperature sensor is fixedly clamped at an included angle formed between the pipe body and the upper surface of the heat dissipation plate through the limiting elastic claw.

Preferably, an elastic pressing claw is arranged in the temperature control box, and the pressing claw end parts of the elastic pressing claw are respectively abutted against the upper surfaces of the temperature controller and the fuse.

Preferably, an insulator is arranged between the pipe body and the temperature control box, the insulator is fixedly arranged at the opening of the lower end of the temperature control box, a hollow cavity is formed between the insulator and the shell of the temperature control box in a surrounding mode, and the temperature controller and the fuse are arranged in the hollow cavity.

Preferably, the side surface of the heat dissipation plate is provided with a connecting plate.

Preferably, clamping convex strips are arranged on two sides of the upper surface of the pipe body.

The utility model provides a PTC heater. The beneficial effects are as follows: the temperature controller is directly arranged at the position, close to the center, of the PTC heating core body, so that the temperature sensed by the temperature controller is closer to the whole temperature of the PTC heating core body, and the temperature controller is in direct contact with the pipe body outside the PTC heating core body, so that the temperature accuracy is guaranteed, the response speed is high, and in addition, a temperature sensor is arranged at an included angle formed between the pipe body and the upper surface of the radiating plate, so that the temperature of the PTC heating core body and the temperature of the radiating plate can be monitored simultaneously through the temperature sensor.

Drawings

In order to more clearly illustrate the utility model or the technical solutions in the prior art, the drawings used in the description of the prior art will be briefly described below.

FIG. 1 is a schematic view of the structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of a temperature control box according to the present utility model;

FIG. 4 is a schematic cross-sectional view of a heat dissipation plate and a tube integrally formed in accordance with a second embodiment of the present utility model;

the reference numerals in the figures illustrate:

1. PTC heating core; 2. a tube body; 3, a heat dissipation plate; 4. a temperature controller; 5. a temperature sensor; 6. a temperature control box; 7. a fuse; 8. an insulator; 21. clamping convex strips; 31. a connecting plate; 61. an elastic claw; 62. limiting the elastic claw; 63. an elastic pressing claw;

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

1-3, a PTC heater comprises a PTC heating core body 1 and a heat dissipation plate 3, wherein a pipe body 2 is arranged on the heat dissipation plate 3, the PTC heating core body 1 is fixedly arranged in the pipe body 2, a temperature controller 4 and a fuse 7 are fixedly arranged on the upper surface of the pipe body 2, and a lead of the PTC heating core body 1 is led out after being connected with the temperature controller 4 and the fuse 7 in series and is connected with an external power supply.

Wherein, the included angle that forms between body 2 side and the upper surface of heating panel 3 department sets up temperature sensor 5.

Working principle:

when the PTC heating device is used, the whole heat dissipation plate 3 can be directly arranged on a product to be heated, the PTC heating core body 1 is used for heating, and heat can be quickly transferred to the product to be heated through the heat dissipation plate 3; for example, the PTC heater is arranged on the mite removing instrument, and the towel can be directly placed on the radiating plate 3, so that the effect of quickly and efficiently heating the towel can be achieved.

In this embodiment, the temperature controller 4 is directly installed at the position close to the center of the pipe body 2, so that the temperature sensed by the temperature controller 4 is closer to the overall temperature of the PTC heating core 1, and since the temperature controller 4 is in direct contact with the pipe body 2 provided with the PTC heating core 1, the temperature accuracy and the response speed are guaranteed, and the temperature controller 4 and the fuse 7 are connected in series and then led out, when the heating temperature of the PTC heating core 1 exceeds the threshold set by the temperature controller, the temperature controller 4 can be directly disconnected, such as the temperature controller 4 fails, the temperature can continue to rise, and when the temperature reaches the threshold set by the fuse 7, the fuse 7 can be permanently disconnected, so that the PTC heating core 1 is powered off, so as to ensure the safety. In addition, the temperature sensor 5 is arranged at the included angle formed between the side surface of the pipe body 2 and the upper surface of the heat dissipation plate 2, so that the temperature of the PTC heating core body 1 and the temperature of the heat dissipation plate 2 can be monitored simultaneously through the temperature sensor 5. In this embodiment, the temperature sensor 5 may be an NTC thermistor sensor, which has the characteristics of high sensitivity, good stability, correspondingly fast, long life and low cost.

In the second embodiment, as a further preferable aspect of the first embodiment, the heat dissipation plate 3 and the pipe body 2 may be detachably connected, for example, may be connected and fixed by an adhesive method and/or a bolt fixing method.

An integrally formed structure as shown in fig. 4 may also be employed. And then the PTC heating core body 1, the electrode plate and the insulating film are assembled and then are directly plugged into the pipe body 2, and solidification and compression joint are carried out. So as to realize the mounting and fixing operation of the entire PTC heating core 1.

In the third embodiment, as a further preferable scheme of the first embodiment, the upper surface of the PTC heating core 1 is fixedly provided with a temperature control box 6, the opening of the lower end of the temperature control box 6 is provided with an insulator 8, the insulator 8 can be made of materials such as an alumina ceramic sheet, a mica sheet, an imine insulating film, an imine insulating tape and the like, a hollow cavity is enclosed between the insulator 8 and the temperature control box 6, the temperature controller 4 and the fuse 7 are both installed in the hollow cavity, the side surface of the temperature control box 6 is fixedly provided with an elastic claw 61, and the temperature control box 6 is fixedly clamped on a clamping convex strip 21 on the side surface of the pipe body 2 through the elastic claw 61. The protection effect to temperature controller 4 and fuse 7 can be realized through control by temperature change box 6, in addition, through set up elasticity jack catch 61 in control by temperature change box 6 side for control by temperature change box 6 can be directly through elasticity jack catch 61 joint fixed on the side of body 2, does not need to adopt unnecessary screw to fix or the form of bonding, convenient and fast. In this embodiment, the elastic claw 61 includes an elastic connection section and a bending and clamping section, one end of the elastic connection section is connected with the side surface of the temperature control box 6, and the other end of the elastic connection section is connected with the bending and clamping section, so that when the temperature control box 6 is mounted on the pipe body 2, elastic deformation is generated by the elastic connection section under the action of external force, the elastic connection section drives the bending and clamping section to open, and after the butt joint is in place, the bending and clamping section can be clamped on the side surface of the pipe body 2.

In the fourth embodiment, as a further preferable scheme of the third embodiment, a limiting elastic claw 62 is fixedly installed on the side surface of the temperature control box 6, and the temperature sensor 5 is fastened and fixed at an included angle formed between the side surface of the pipe body 2 and the upper surface of the heat dissipation plate 3 through the limiting elastic claw 62. The limiting and fixing effect on the temperature sensor 5 can be achieved through the limiting elastic clamping claws 62, so that the rapid fixing effect on the temperature sensor 5 is achieved, and the mode of fixing by redundant screws is not needed, so that the temperature sensor is convenient and rapid.

In the fifth embodiment, as a further preferable mode of the third embodiment, an elastic pressing claw 63 is provided inside the temperature control box 6, and the pressing claw end portions of the elastic pressing claw 63 respectively collide with the upper surfaces of the temperature controller 4 and the fuse 7. Through the elastic acting force of the elastic pressing claw 63, the temperature controller 4 and the fuse 7 can better collide with the surface of the pipe body 2, the temperature of the PTC heating core body 1 is accurately transferred to the fuse 7 and the temperature controller 4, and the heat conduction efficiency between the induction surfaces of the fuse 7 and the temperature controller 4 and the heating surface of the PTC heater is improved, so that high-precision temperature monitoring is further realized.

In the sixth embodiment, as a further preferable embodiment of the first embodiment, the surface of the heat dissipating plate 3 is provided with a concave-convex plate structure. The heat dissipation area is enlarged by the concave-convex plate structure on the surface of the heat dissipation plate 3. And the surface of the heat dissipation plate 3 may be subjected to corrosion-preventing treatment such as anodic oxidation, paint-spraying treatment, etc.

In the seventh embodiment, as a further preferable embodiment of the first embodiment, the heat dissipation plate 3 is provided with a connection plate 31 on a side surface. So that the PTC heater can be directly and integrally installed into the previous product through the connection plate 31, thereby achieving the effect of rapid installation.

In the eighth embodiment, as shown in fig. 4, as a further preferable embodiment of the third embodiment, the pipe body 2 is provided with engaging convex strips 21 on both sides. Therefore, the temperature control box 6 can be directly clamped and fixed with the clamping convex strips 21 through the clamping claws 61.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A PTC heater characterized in that: including PTC heating core (1) and heating panel (3), be equipped with body (2) on heating panel (3), PTC heating core (1) fixed mounting is in body (2), surface mounting has temperature controller (4) and fuse (7) on body (2), draw forth and link to each other with external power source after the wire of PTC heating core (1) is established ties with temperature controller (4) and fuse (7).

2. A PTC heater according to claim 1, wherein: the heat dissipation plate (3) and the pipe body (2) are of an integrated structure.

3. A PTC heater according to claim 1, wherein: the heat dissipation plate (3) is detachably connected with the pipe body (2).

4. A PTC heater according to claim 2 or 3, wherein: and a temperature sensor (5) is arranged at an included angle formed between the side surface of the pipe body (2) and the upper surface of the radiating plate (3).

5. A PTC heater according to claim 4, wherein: the temperature control box is characterized in that a temperature control box (6) is fixedly arranged on the upper surface of the pipe body (2), the temperature controller (4) and the fuse (7) are both arranged in the temperature control box (6), an elastic claw (61) is fixedly arranged on the side surface of the temperature control box (6), and the temperature control box (6) is fixedly clamped on the pipe body (2) through the elastic claw (61).

6. A PTC heater according to claim 5, wherein: limiting elastic clamping claws (62) are fixedly arranged on the side face of the temperature control box (6), and the temperature sensor (5) is fixedly clamped at an included angle formed between the pipe body (2) and the upper surface of the radiating plate (3) through the limiting elastic clamping claws (62).

7. A PTC heater according to claim 5, wherein: an elastic pressing claw (63) is arranged in the temperature control box (6), and the pressing claw end part of the elastic pressing claw (63) is respectively abutted against the upper surfaces of the temperature controller (4) and the fuse (7).

8. A PTC heater according to claim 1, wherein: an insulator (8) is arranged between the pipe body (2) and the temperature control box (6), the insulator (8) is fixedly arranged at the opening of the lower end of the temperature control box (6), a hollow cavity is formed between the insulator (8) and the shell of the temperature control box (6), and the temperature controller (4) and the fuse (7) are arranged in the hollow cavity.

9. A PTC heater according to claim 1, wherein: the side face of the radiating plate (3) is provided with a connecting plate (31).

10. A PTC heater according to claim 1, wherein: clamping convex strips (21) are arranged on two sides of the upper surface of the pipe body (2).