CN202957997U - Liquid heater with protection layer - Google Patents
Liquid heater with protection layer Download PDFInfo
- Publication number
- CN202957997U CN202957997U CN 201220524774 CN201220524774U CN202957997U CN 202957997 U CN202957997 U CN 202957997U CN 201220524774 CN201220524774 CN 201220524774 CN 201220524774 U CN201220524774 U CN 201220524774U CN 202957997 U CN202957997 U CN 202957997U
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- CN
- China
- Prior art keywords
- protective layer
- ptc heating
- insulating barrier
- heating plate
- plate group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a liquid heater with a protection layer, comprising a PTC heating sheet set, electrode plates respectively arranged at both sides of the PTC heating sheet set, an insulating layer enclosing and wrapping the PTC heating sheet set and the two electrode plates, and a housing containing the PTC heating sheet set, the electrode plates and the insulating layer, characterized in that between the housing and the insulating layer there is provided at least one protection layer. The liquid heater with a protection layer has the advantages of protecting an insulating film from being completely damaged by solid particles, through arranging the protection layer between the housing and the electrode plates, thereby reducing leakage rate and further increasing the safety coefficient of the PTC heater.
Description
Technical field
The utility model relates to a kind of liquid heater, particularly a kind of liquid heater of the PTC with protective layer.
Background technology
PTC (the abbreviation of Positive Temperature Coefficient at present, the meaning is positive temperature coefficient) heater hangs down when liquid is heated and is difficult at the heater surfaces scaliness due to surface temperature, thereby be widely used on the household appliances and other industrial products of water dispenser, foot bath.Common ptc heater generally adopts the dielectric films such as multilayer polyimide to wrap up and be positioned in the metal shell of heat conduction the battery lead plate of PTC heating plate group and PTC heating plate group both sides; if this ptc heater is stained with tiny metallic particles or other solid particle in the course of processing on metal shell or dielectric film; after being subject to the external force extruding, easily cause the complete breakage of multilayer insulating film to cause electric leakage, can there be potential potential safety hazard in this when liquid is heated.
Summary of the invention
The purpose of this utility model is for the defect existed in prior art, and a kind of liquid heater with protective layer safe, easy to process, low cost of manufacture of establishing is provided, and effectively reduces the risk of PTC liquid heater electric leakage.
To achieve these goals the technical solution adopted in the utility model comprise PTC heating plate group, be located at respectively the battery lead plate of PTC heating plate group both sides, around being wrapped in PTC heating plate group and the insulating barrier in two battery lead plates outside and the housing that holds PTC heating plate group, battery lead plate and insulating barrier, it is characterized in that: be provided with at least one protective layer between housing and insulating barrier.
Described insulating barrier is comprised of one deck dielectric film at least, and protective layer is located at the outside of insulating barrier, and protective layer is that the sheet metal that the thermal conductivity such as stainless steel, copper, aluminium alloy are good or the sheet insulating material that other is high temperature resistant, thermal conductivity is good are as mica etc.
Described protective layer can also be located between the two-layer above dielectric film of insulating barrier.The shape of protective layer and size are complementary with the profile of PTC heating plate group and electrode slice.
Between described PTC heating plate group, electrode slice, insulating barrier, protective layer and housing, fit tightly.Housing is that copper, aluminium alloy or other is high temperature resistant, thermal conductivity is good material are made, and the opening part of housing is filled with resistant to elevated temperatures waterproof insulation glue, and its material is resin or other insulating material high temperature resistant, waterproof.
The utility model has the advantages that the damage fully that prevents that by protective layer is set between housing and battery lead plate solid particle from causing dielectric film, reduce the occurrence probability of electric leakage, with this, improve the coefficient of safety of ptc heater.
The accompanying drawing explanation
Fig. 1 schematic perspective view of the present utility model;
Fig. 2 structure cross-sectional schematic of the present utility model;
The structure cross-sectional schematic of Fig. 3 the utility model embodiment tri-.
In figure: 1PTC heating plate group, 2 battery lead plates, 3 insulating barriers, 4 protective layers, 5 housings, 6 waterproof insulation glue, 7 wires.
Embodiment
Further illustrate embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment mono-
Referring to Fig. 1, Fig. 2, a kind of liquid heater of the PTC with protective layer of the present utility model comprises one by some PTC (abbreviation of Positive Temperature Coefficient, the meaning is positive temperature coefficient) the PTC heating plate group 1 that forms of potsherd, the upper and lower surface of PTC heating plate group 1 is respectively equipped with by copper, the battery lead plate 2 that aluminium or the good material of other electrical and thermal conductivity performance are made, battery lead plate is connected with wire 7, the outer felt of PTC heating plate group 1 and battery lead plate 2 is around being coated with by the two-layer or two-layer insulating barrier formed with upper nonconductive Film 3, the material of the dielectric film of insulating barrier 3 is polyimides or other is high temperature resistant, the material that thermal conductivity is good, be respectively equipped with the protective layer 4 that the dielectric film that prevents insulating barrier 3 is punctured by little solid particle between each layer of dielectric film of insulating barrier 3, protective layer 4 be stainless steel, copper, two sheet metals up and down that the thermal conductivity such as aluminium alloy are good or other is high temperature resistant, the good flaky material of thermal conductivity is as mica sheet etc., the shape of protective layer 4 sheet metals and size are complementary with the profile of PTC heating plate group 1 and battery lead plate 2, PTC heating plate group 1, battery lead plate 2, the sheet metal of the multilayer insulating film of insulating barrier 3 and protective layer 4 is placed in housing 5, housing 5 is copper, aluminium alloy or other is high temperature resistant, the material that thermal conductivity is good, the opening part of housing 5 is filled with resistant to elevated temperatures waterproof insulation glue 6, two wires 7 make outside it is exposed to through waterproof insulation glue 6.The purpose of above-mentioned implementation method is to make the sheet metal of protective layer 4 play the protective barrier effect to insulating barrier 3 dielectric films; if solid particle only is present in the inboard of protective layer 4 or only is present in the outside of protective layer 4 in process of production; even in the situation that be subject to external force; the sheet metal of protective layer 4 can protect insulating barrier 3 dielectric films of an other side can not damaged by solid particle, and the probability that can greatly reduce like this insulating barrier 3 dielectric film breakages prevents the generation of electric leakage.In order to guarantee good thermal conductivity; between the multilayer insulating film of PTC heating plate group 1, electrode slice 2, insulating barrier 3, protective layer 4 and housing 5, must fit tightly; generally can be positioned at the sheet metal by PTC heating plate group 1, battery lead plate 2, insulating barrier 3 multilayer insulating films and protective layer 4 housing 5 interior after, the effect of being exerted pressure and said modules being reached fit tightly in the inside of housing 5 with process equipment.
Embodiment bis-
The present embodiment is identical with embodiment mono-; difference is that the sheet metal of protective layer 4 in the present embodiment is set to a slice; put into the sheet metal of protective layer 4 in PTC heating plate group 1, battery lead plate 2 outer felt after covering one or more layers insulation film; be wound around again in battery lead plate 2 outsides again and cover one or more layers insulation film; the sheet metal of protective layer 4 is selected the flexible metal thin slice that thinner thickness can bending, and the size of the sheet metal of protective layer 4 is traditionally arranged to be and can be wound around covering PTC heating plate group 1, battery lead plate 2 one weeks.The present embodiment is that then the centre that the sheet metal of protective layer 4 is clipped in to insulation film in PTC heating plate group 1, battery lead plate 2 outer felt after covering one or more layers insulation film is wound around covering to PTC heating plate group 1 and battery lead plate 2 together with dielectric film.
Embodiment tri-
As shown in Figure 3, the present embodiment is identical with embodiment mono-, and difference is that protective layer 4 is located between housing 5 and insulating barrier 3.
Claims (6)
1. the liquid heater with protective layer; comprise PTC heating plate group, be located at respectively the battery lead plate of PTC heating plate group both sides, around being wrapped in PTC heating plate group and the insulating barrier in two battery lead plates outside and the housing that holds PTC heating plate group, battery lead plate and insulating barrier, it is characterized in that: be provided with at least one protective layer between housing and insulating barrier.
2. the liquid heater with protective layer according to claim 1, is characterized in that described insulating barrier is comprised of one deck dielectric film at least, and protective layer is located at the outside of insulating barrier.
3. according to claim 1, the 2 described liquid heaters with protective layer, it is characterized in that described protective layer is located between the two-layer above dielectric film of insulating barrier.
4. the liquid heater with protective layer according to claim 1, is characterized in that the shape of described protective layer and size are complementary with the profile of PTC heating plate group and electrode slice.
5. the liquid heater with protective layer according to claim 1, is characterized in that fitting between described PTC heating plate group, electrode slice, insulating barrier, protective layer and housing.
6. the liquid heater with protective layer according to claim 1, is characterized in that the opening part of described housing is filled with waterproof insulation glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524774 CN202957997U (en) | 2012-10-12 | 2012-10-12 | Liquid heater with protection layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220524774 CN202957997U (en) | 2012-10-12 | 2012-10-12 | Liquid heater with protection layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957997U true CN202957997U (en) | 2013-05-29 |
Family
ID=48463547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220524774 Expired - Lifetime CN202957997U (en) | 2012-10-12 | 2012-10-12 | Liquid heater with protection layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202957997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270380A (en) * | 2017-06-29 | 2017-10-20 | 广东美的环境电器制造有限公司 | Warmer, surface insulation type PTC electric heaters and preparation method thereof |
| US10764963B2 (en) | 2016-10-07 | 2020-09-01 | S. C. Johnson & Son, Inc. | Volatile material dispenser |
-
2012
- 2012-10-12 CN CN 201220524774 patent/CN202957997U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10764963B2 (en) | 2016-10-07 | 2020-09-01 | S. C. Johnson & Son, Inc. | Volatile material dispenser |
| CN107270380A (en) * | 2017-06-29 | 2017-10-20 | 广东美的环境电器制造有限公司 | Warmer, surface insulation type PTC electric heaters and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130529 |
|
| CX01 | Expiry of patent term |