CN204795641U

CN204795641U - Pretightning force PTC electric heater

Info

Publication number: CN204795641U
Application number: CN201520551793.6U
Authority: CN
Inventors: 夏铭宇
Original assignee: Jiangsu Yuanzhiyi Electric Co Ltd
Current assignee: Jiangsu Yuanzhiyi Electric Co Ltd
Priority date: 2015-07-28
Filing date: 2015-07-28
Publication date: 2015-11-18
Anticipated expiration: 2025-07-28

Abstract

The utility model discloses a pretightning force PTC electric heater. It is including the PTC component, the PTC component is laminated behind the electrode outward and is drawn forth the electrode through the power cord, the peripheral parcel of PTC component and electrode has and compresses tightly the intraductal formation electric heater main part in side of packing into behind the insulating film, still include a framework, the electric heater main part is settled in the framework, still be provided with the clamp plate that is located between framework and the electric heater main part in the framework, the bottom surface of clamp plate is provided with the elastic layer, thereby the elastic layer of clamp plate compresses tightly in the electric heater main part side's of making pipe and can produce elastic deformation and compress tightly PTC component and electrode fixed. After adopting foretell structure, it is fixed that the elastic force that utilizes the clamp plate in the use makes PTC component and electrode compress tightly all the time, when emergence expend with heat and contract with cold or other problems for thereby square pipe can produce elastic deformation and compress tightly PTC component and electrode fixed, has guaranteed the thermal efficiency from this.

Description

Pretightning force PTC electric heater

Technical field

The utility model relates to a kind of electric heater, specifically a kind of pretightning force PTC electric heater.

Background technology

Conventional P TC electric heater; generally comprise PTC potsherd; PTC potsherd is fitted outward after electrode and is drawn by electrode; fill in square tube to compress after PTC potsherd wrap insulate film simultaneously and make; the PTC electric heater of this structure of tradition, in use usually can make owing to expanding with heat and contract with cold to occur gap between electrode and PTC potsherd, thus reduce the reliability of contact; increase resistance, the heat efficiency is reduced greatly.

Summary of the invention

The technical problems to be solved in the utility model is to provide one can improve electrode and PTC contact reliability, thus ensures the pretightning force PTC electric heater of the heat efficiency.

In order to solve the problems of the technologies described above, pretightning force PTC electric heater of the present utility model, include PTC element, PTC element to be fitted outward after electrode and is drawn by electrode by power line, compress after described PTC element and electrode periphery are enclosed with dielectric film in loading square tube and form electric heater main body, it is characterized in that: also comprise a framework, electric heater main body is placed in framework, the pressing plate between framework and electric heater body upper surface is also provided with in framework, the bottom surface of pressing plate is provided with elastic layer, the elastic layer of pressing plate is pressed on and electric heater main body makes square tube to produce strain thus PTC element and electrode is fixed.

Also including can the pretension bolt of clamping platen upper surface, and described framework is provided with just to the bolt hole of electric heater main body, described pretension bolt is pressed on the upper surface of pressing plate through bolt hole.

Fin is placed with outside described square tube.

Described pressing plate is between fin and framework, and the elastic layer of pressing plate compresses and makes square tube to produce strain on a heat sink thus PTC element and electrode be fixed.

Described square tube is aluminum alloy square tube.

Described PTC element is PTC potsherd.

Described fin is corrugated fin.

After adopting above-mentioned structure, the pressing plate with elastic layer arranged in the framework arranged outward due to electric heater main body and framework, thus when utilizing the elastic force of pressing plate to make PTC element and electrode be fixed all the time in use procedure, even if expand with heat and contract with cold or other problem time, also directly can be pressed on by the elastic layer of pressing plate and electric heater main body make square tube to produce strain thus PTC element and electrode are fixed, thus avoid and easily occur gap between electrode and PTC potsherd traditionally, reduce the problem of the reliability of contact, ensure that the heat efficiency thus, the fin arranged in addition increases area of dissipation and strength ratio is better, not cracky.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model pretightning force PTC electric heater.

Embodiment

Below in conjunction with the drawings and specific embodiments, pretightning force PTC electric heater of the present utility model is described in further detail.

Embodiment one:

Pretightning force PTC electric heater of the present utility model, include PTC element 1, said PTC element 1 is preferably PTC potsherd, by power line, electrode is drawn after PTC element 1 outer laminating electrode 2, PTC element 1 and electrode 2 periphery compress in loading square tube 4 after being enclosed with dielectric film 3 and form electric heater main body, said square tube 4 is preferably aluminum alloy square tube, also comprise a framework 5, electric heater main body is placed in framework 5, the pressing plate 6 between framework and the square tube 4 of electric heater main body is also provided with in framework 5, the bottom surface of pressing plate 6 is provided with elastic layer 7, also including can the pretension bolt 8 of clamping platen 6 upper surface, framework 5 have just to the bolt hole above electric heater main body in framework, pretension bolt 8 is pressed on the upper surface of pressing plate 6 through bolt hole, pressing plate 7 is compressed by pretension bolt 8 thus makes the elastic layer of pressing plate 7 be pressed in electric heater main body, when the situation of expanding with heat and contract with cold or when there is other problem, make square tube 4 to produce strain thus PTC element 1 and electrode 2 are fixed.

Embodiment two:

Pretightning force PTC electric heater of the present utility model, include PTC element 1, said PTC element 1 is preferably PTC potsherd, by power line, electrode is drawn after PTC element 1 outer laminating electrode 2, PTC element 1 and electrode 2 periphery compress in loading square tube 4 after being enclosed with dielectric film 3 and form electric heater main body, said square tube 4 is preferably aluminum alloy square tube, also comprise a framework 5, the cross sectional shape of framework 5 is that C shape structure makes framework 5 form an opening part thus, electric heater main body is placed in framework 5, fin 9 is placed with outside the square tube 4 of electric heater main body, the pressing plate 6 between framework opening part and fin 9 is also provided with in framework 5, the bottom surface of pressing plate 6 is provided with elastic layer 7, also including can the pretension bolt 8 of clamping platen 6 upper surface, the opening part both sides of framework 5 are provided with bolt hole, pretension bolt 8 is pressed on the upper surface of pressing plate 6 through bolt hole, pressing plate 7 is pushed down by pretension bolt 8 thus is made the elastic layer of pressing plate 7 be pressed on fin 9, when the situation of expanding with heat and contract with cold or when there is other problem, make square tube 4 to produce strain thus PTC element 1 and electrode 2 are fixed.

Wherein, fin 9 is corrugated fin, increases area of dissipation and strength ratio is better, not cracky.

Claims

1. a pretightning force PTC electric heater, include PTC element (1), PTC element (1) fits electrode (2) outward afterwards and drawn by electrode by power line, described PTC element (1) and electrode (2) periphery are enclosed with dielectric film (3) and compress formation electric heater main body in loading square tube (4) afterwards, it is characterized in that: also comprise a framework (5), described electric heater main body is placed in framework (5), the pressing plate (6) be positioned between framework (5) and electric heater body upper surface is also provided with in described framework (5), the bottom surface of described pressing plate (6) is provided with elastic layer (7), the elastic layer of pressing plate (6) is pressed on and electric heater main body makes square tube (4) to produce strain thus PTC element (1) and electrode (2) is fixed.

2. according to PTC electric heater according to claim 1, it is characterized in that: also including can the pretension bolt (8) of clamping platen (6) upper surface, described framework (5) is provided with just to the bolt hole of electric heater main body, described pretension bolt (8) is pressed on the upper surface of pressing plate (6) through bolt hole.

3. according to the PTC electric heater described in claim 1 or 2, it is characterized in that: outside described square tube (4), be placed with fin (9).

4. according to pretightning force PTC electric heater according to claim 3, it is characterized in that: described pressing plate (6) is positioned between fin (9) and framework (5), the elastic layer of described pressing plate (6) is pressed on and fin (9) makes square tube (4) to produce strain thus PTC element (1) and electrode (2) is fixed.

5. according to the pretightning force PTC electric heater described in claim 1 or 4, it is characterized in that: described square tube (4) is aluminum alloy square tube.

6. according to the pretightning force PTC electric heater described in claim 1 or 4, it is characterized in that: described PTC element (1) is PTC potsherd.

7. according to pretightning force PTC electric heater according to claim 3, it is characterized in that: described fin (9) is corrugated fin.