PTC heating device eliminating induced electricity

A heater and induction technology, applied in the direction of heating element material, heating element shape, etc., can solve the problems of high failure rate, poor thermal conductivity, low manufacturability, etc., to achieve increased thermal conductivity, reduced potential difference, and simple manufacturing process. Effect

CN104411029AActive Publication Date: 2015-03-11芜湖蓓慈塑胶有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-03-11

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Abstract

The invention discloses a PTC heating device eliminating induced electricity. The device comprises an aluminum radiating member (201) in a hollow structure; the aluminum radiating member (201) is provided with a radiating cavity (202) inside; the radiating cavity (202) is provided with a PTC heater (203) inside. The PTC heater (203) comprises a first electrode plate (2), a second electrode plate (4), a third electrode plate (6), a first ceramic heating plate (3), a second ceramic heating plate (5) and an insulating layer (1); two ceramic heating plates are utilized, residual metal shielding layers are omitted, the heating speed is high, the heat conduction performance is improved, and the manufacture process is simple.
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Description

technical field

[0001] The invention belongs to the technical field of PTC heaters, in particular to a PTC heater device for eliminating induced electricity. Background technique

[0002] At this stage, all PTC heaters will generate induction electricity. The existing technology mainly eliminates induction electricity by adding a metal shielding layer. The method is to surround a metal shielding layer outside the heating element, the shielding layer is connected to the neutral line, and there is an insulating layer between the shielding layer and the aluminum heat dissipation surface, so that the potential of the shielding layer is approximately zero, thereby eliminating the induction on the surface of the aluminum heat sink. Electricity.

[0003] In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: However, the prior art has poor thermal conductivity, high failure rate and low manufacturability when ...

Examples

Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] see figure 1 , a PTC heater device for eliminating induced electricity, comprising an aluminum heat sink 201, the aluminum heat sink is a hollow structure, and a heat dissipation inner cavity 202 is provided inside, and a PTC heating element 203 is arranged in the heat dissipation inner cavity 202, and the PTC heating element 203 includes The first electrode plate 2, the second electrode plate 4, the third electrode plate 6, the first ceramic heating sheet 3, the second ceramic heating sheet 5 and the insulating layer 1, and the first ceramic heating sheet 3 on both sides of the second electrode plate 4 And the second ceramic heating sheet 5, the outer side of the first ceramic heating sheet 3 is the first electrode plate 2, the...