CN204014120U - A kind of water proof type ptc heater - Google Patents
A kind of water proof type ptc heater Download PDFInfo
- Publication number
- CN204014120U CN204014120U CN201420488112.1U CN201420488112U CN204014120U CN 204014120 U CN204014120 U CN 204014120U CN 201420488112 U CN201420488112 U CN 201420488112U CN 204014120 U CN204014120 U CN 204014120U
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- CN
- China
- Prior art keywords
- metal tube
- rubber seal
- seal plug
- ptc heater
- layer rubber
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- Expired - Fee Related
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Abstract
The utility model is a kind of water proof type ptc heater, belong to ptc heater, solve the poor problem of prior art water proofing property, it comprises: metal tube, be arranged on the PTC electric heating element in metal tube, electrode and dielectric film, extend to the hermetically-sealed construction of drawing wire and metal tube both ends outside metal tube, wherein, the hermetically-sealed construction at metal tube both ends is all multi-sealing structures, the multi-sealing structure of each end comprises: two-layer rubber seal plug, be placed in metal tube end mouth, between two-layer rubber seal plug, there is gap, outer end and metal tube end mouth have spacing, interior end in contact dielectric film end, high-temperature silica gel, riddles between two-layer rubber seal plug in gap, fluid sealant, riddles in the outer end of two-layer rubber seal plug and the spacing of metal tube end mouth.The utility model adopts multi-sealing structure to the metal tube end of ptc heater, makes ptc heater realize the good effect of water resistance, has improved the fail safe that ptc heater is used.
Description
Technical field
The utility model relates to a kind of ptc heater, refers in particular to a kind of water proof type ptc heater with multi-sealing structure.
Background technology
Existing insulated type ptc heater, its basic structure generally comprises a metal tube, and PTC electric heating element, electrode and dielectric film are set in metal tube, fills, and then fill with sealant sealing in the end of metal tube with sealing plug.
The ptc heater of existing structure, although at metal tube two ends, carried out the design that waterproof is invaded, yet in humidity or in the situation that having water to immerse, still easily there is cracking phenomena in two ends, water resistance is poor, causes electric leakage, thereby has the drawback of potential safety hazard.
In order to address the above problem, need to improve the closed structure at metal tube two ends, make its water resistance reach the requirement of GB700-86IP67 degree of protection standard.
Utility model content
The purpose of this utility model is the problem existing in order to solve prior art, and the multiple water proof type ptc heater that a kind of water resistance is good is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of water proof type ptc heater, comprise: metal tube, be arranged on PTC electric heating element, the electrode in metal tube and be placed in the dielectric film of electrode outside, be connected with electrode and extend to the hermetically-sealed construction of drawing wire and metal tube both ends outside metal tube one end, wherein, the hermetically-sealed construction at described metal tube both ends is respectively multi-sealing structure, and the multi-sealing structure of each metal tube end comprises:
Two-layer rubber seal plug, is placed in metal tube end mouth, and sealing metal tube end, has gap between two-layer rubber seal plug, and the outer end of two-layer rubber seal plug and metal tube end mouth have spacing, the end of interior end in contact dielectric film;
High-temperature silica gel, riddles in the gap between two-layer rubber seal plug;
Fluid sealant, riddles in the outer end of two-layer rubber seal plug and the spacing of metal tube end mouth sealing two layers rubber seal plug.
Described electrode 2, there is following relation in the length of dielectric film 3 and metal tube 4:
If the length of electrode 2 is L2, the length of dielectric film 3 is L3, and the length of metal tube 4 is L4:
(1.2～1.4)L2＜L3＜(0.6～0.8)L4。
The beneficial effects of the utility model:
Ptc heater of the present utility model is compared with original technology, have the following advantages: by 2 layers of sealing plug, 1 layer of high-temperature silica gel and 1 layer of fluid sealant, the metal tube end surface of internal cavity of ptc heater is carried out direct and airtight fully, make ptc heater of the present utility model realize the good effect of water resistance, improved the fail safe that ptc heater is used.
For further illustrating above-mentioned purpose of the present utility model, design feature and effect, below with reference to accompanying drawing, the utility model is elaborated.
Accompanying drawing explanation
Fig. 1 is the structural representation of the multiple water proof type ptc heater of the utility model.
Embodiment
Accompanying drawing below in conjunction with embodiment is elaborated to embodiment of the present utility model.
Referring to Fig. 1, the multiple water proof type ptc heater of the utility model comprises: metal tube 4, be arranged on PTC electric heating element 1, the electrode 2 in metal tube and be placed in the dielectric film 3 of electrode 2 outsides, be connected with electrode 2 and extend to and draw wire 5 outside metal tube 4 one ends 41, the hermetically-sealed construction at metal tube 4 both ends 41,42, wherein:
The hermetically-sealed construction at described metal tube 4 both ends 41,42 is respectively multi-sealing structure, and the multi-sealing structure of each metal tube end comprises:
Two-layer rubber seal plug 8, is placed in metal tube end mouth, and sealing metal tube end has gap between two-layer rubber seal plug 8, and the outer end of two-layer rubber seal plug 8 and metal tube end mouth have spacing, the end of interior end in contact dielectric film 3;
High-temperature silica gel 7, riddles in the gap between two-layer rubber seal plug 8;
Fluid sealant 6, riddles in the outer end of two-layer rubber seal plug 8 and the spacing of end mouth, for sealing two layers rubber seal plug 8.
The length of the Length Ratio metal tube 4 of described dielectric film 3 is short.If the length of electrode 2 is L2, the length of dielectric film 3 is that the length of L3 and metal tube 4 is L4, L2, and, between L4, there is following relation in L3:
(1.2～1.4)L2＜L3＜(0.6～0.8)L4。
L2, L3, this long-distance structure of L4 can make sealing plug 8 and high-temperature silica gel 7 be deep into dielectric film 3 ends of PTC electric heating element 1, fully seals with metal tube 4 end surface of internal cavity; The two-layer rubber seal plug 8 of another high-temperature silica gel 7 close adhesion in its left and right layer, and at high temperature also can not ftracture.
When making, this ptc heater first uses first sealing plug sealed insulation film 3 ends, then with high-temperature silica gel 7, fill sealing, with second sealing plug, seal first sealing plug again, the outer end of second sealing plug and metal tube end mouth have spacing, in this spacing, with fluid sealant 6, fill sealing.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the purpose of this utility model is described, and not with opposing restriction of the present utility model, as long as in essential scope of the present utility model, the variation of the above embodiment, modification all will be dropped in the scope of claim of the present utility model.
Claims (2)
1. a water proof type ptc heater, comprise: metal tube (4), be arranged on PTC electric heating element (1), the electrode (2) in metal tube (4) and be placed in the dielectric film (3) of electrode (2) outside, be connected with electrode (2) and extend to and draw wire (5) and metal tube (4) both ends (41 outside metal tube (4) one ends (41), 42) hermetically-sealed construction, it is characterized in that, described metal tube (4) both ends (41,42) hermetically-sealed construction is respectively multi-sealing structure, and the multi-sealing structure of each metal tube end comprises:
Two-layer rubber seal plug (8), be placed in metal tube end mouth, sealing metal tube end, two-layer rubber seal plug has gap between (8), outer end and the metal tube end mouth of two-layer rubber seal plug (8) have spacing, the end of interior end in contact dielectric film (3);
High-temperature silica gel (7), riddles in the gap between two-layer rubber seal plug (8);
Fluid sealant (6), riddles in the outer end of two-layer rubber seal plug (8) and the spacing of metal tube end mouth sealing two layers rubber seal plug (8).
2. water proof type ptc heater as claimed in claim 1, is characterized in that:
Described electrode (2), there is following relation in the length of dielectric film (3) and metal tube (4):
If the length of electrode (2) is L2, the length of dielectric film (3) is L3, and the length of metal tube (4) is L4:
(1.2～1.4)L2＜L3＜(0.6～0.8)L4。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420488112.1U CN204014120U (en) | 2014-08-27 | 2014-08-27 | A kind of water proof type ptc heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420488112.1U CN204014120U (en) | 2014-08-27 | 2014-08-27 | A kind of water proof type ptc heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204014120U true CN204014120U (en) | 2014-12-10 |
Family
ID=52054055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420488112.1U Expired - Fee Related CN204014120U (en) | 2014-08-27 | 2014-08-27 | A kind of water proof type ptc heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204014120U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828469A (en) * | 2015-01-07 | 2016-08-03 | 江苏亿美电器有限公司 | Liquid PTC heating unit whose power is adjusted conveniently |
| CN109661045A (en) * | 2019-01-29 | 2019-04-19 | 泉州铭狮卫浴有限公司 | The production method and graphene heating board of graphene heating board |
| CN113905467A (en) * | 2021-11-04 | 2022-01-07 | 苏州法密利电子科技有限公司 | Improved PTC heater and preparation method thereof |
-
2014
- 2014-08-27 CN CN201420488112.1U patent/CN204014120U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105828469A (en) * | 2015-01-07 | 2016-08-03 | 江苏亿美电器有限公司 | Liquid PTC heating unit whose power is adjusted conveniently |
| CN105828469B (en) * | 2015-01-07 | 2022-11-01 | 江苏亿美电器有限公司 | Liquid PTC heating element convenient for power regulation |
| CN109661045A (en) * | 2019-01-29 | 2019-04-19 | 泉州铭狮卫浴有限公司 | The production method and graphene heating board of graphene heating board |
| CN109661045B (en) * | 2019-01-29 | 2021-03-23 | 泉州铭狮卫浴有限公司 | Manufacturing method of graphene heating plate and graphene heating plate |
| CN113905467A (en) * | 2021-11-04 | 2022-01-07 | 苏州法密利电子科技有限公司 | Improved PTC heater and preparation method thereof |
| CN113905467B (en) * | 2021-11-04 | 2023-08-01 | 苏州法密利电子科技有限公司 | Improved PTC heater and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20210827 |