CN211909206U - Low-noise PTC heater - Google Patents
Low-noise PTC heater Download PDFInfo
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- CN211909206U CN211909206U CN202020748552.1U CN202020748552U CN211909206U CN 211909206 U CN211909206 U CN 211909206U CN 202020748552 U CN202020748552 U CN 202020748552U CN 211909206 U CN211909206 U CN 211909206U
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- metal electrode
- ceramic element
- ptc ceramic
- ptc
- polyimide film
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Abstract
The utility model provides a low noise PTC heater, including heating core, silica gel layer, polyimide film and aluminum pipe, the heating core includes PTC ceramic element, pastes and locates the last metal electrode piece and the subsides of PTC ceramic element upper surface are located the lower metal electrode piece of PTC ceramic element lower surface, polyimide film wrap up in the heating core local position or all position coating between polyimide film inlayer and the heating core have the silica gel layer. The polyimide film is bonded with the heating core body through the silica gel layer, so that the action amplitude of the polyimide film in the diastole is greatly reduced, and the noise generated when the heater works is reduced or even eliminated.
Description
Technical Field
The utility model relates to a heater, concretely relates to low noise PTC heater.
Background
At present, heaters made of PTC ceramics are widely used in the market of air conditioners as electric auxiliary heating. Compared with the traditional electric heating tube, the PTC heater has the advantages of controllable temperature, no open fire, long service life and the like. As shown in fig. 1, in general, the PTC heater has a structure including: the PTC ceramic element 1, the upper metal electrode plate 2 and the lower metal electrode plate 3 for conducting are wrapped by the polyimide film 4, penetrate into the aluminum pipe 5 after being wrapped, and are extruded by a hydraulic press or a hydraulic press and the like to deform, so that the PTC ceramic element 1, the upper metal electrode plate 2, the lower metal electrode plate 3 and the polyimide film 4 are in contact. In the existing heater structure, a polyimide film is extruded between a metal electrode plate and an aluminum tube after the aluminum tube deforms, and a certain gap is still left between the polyimide film and the metal electrode plate and the aluminum tube. In the working process of the heater, the polyimide film makes ' papa ' and papa ' sounds due to expansion and relaxation, and the sound ears can be sequentially identified within the range of 1-2 meters away, so that the use feeling of an air conditioner user is influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a low-noise PTC heater.
In order to achieve the above object, the technical solution of the present invention is: a low noise PTC heater comprising:
the heating core body comprises a PTC ceramic element, an upper metal electrode plate attached to the upper surface of the PTC ceramic element and a lower metal electrode plate attached to the lower surface of the PTC ceramic element;
the polyimide film is wrapped on the heating core body, and a silica gel layer is coated at the partial position or the whole position between the inner layer of the polyimide film and the heating core body;
and the aluminum pipe is sleeved on the periphery of the polyimide film.
The utility model discloses compare in prior art, bond polyimide film and heating core through the silica gel layer and be in the same place, polyimide film is heated relaxation action range and is very reduced like this, alleviates or even stops heater during operation noise production.
Further, the silica gel layer is coated on: the upper surface of the upper metal electrode plate, or/and the lower surface of the lower metal electrode plate.
Further, the silica gel layer is coated on two side surfaces of the PTC ceramic element.
Further, the widths of the upper metal electrode plate and the lower metal electrode plate are both narrower than the width of the PTC ceramic element, and the area of the upper surface of the PTC ceramic element, which is not covered by the upper metal electrode plate, or/and the area of the lower surface of the PTC ceramic element, which is not covered by the lower metal electrode plate, is provided with a silica gel layer.
Further, the silica gel layer is coated on: any or all of the upper surface of the upper metal electrode plate, the lower surface of the lower metal electrode plate, two side surfaces of the PTC ceramic element, a region where the upper surface of the PTC ceramic element is not covered with the upper metal electrode plate, and a region where the lower surface of the PTC ceramic element is not covered with the lower metal electrode plate.
By adopting the preferable scheme, the coating position of the silica gel layer can be selected better according to the structure and the size of an actual product, so that the noise reduction and the operation convenience are both considered.
Furthermore, silica gel is coated between the upper metal electrode plate and the upper surface of the PTC ceramic element and between the lower metal electrode plate and the lower surface of the PTC ceramic element.
By adopting the preferable scheme, the heat conduction efficiency between the PTC ceramic element and the upper and lower metal electrode plates is promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic cross-sectional configuration of a prior art PTC heater;
FIG. 2 is a schematic cross-sectional structure of an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of another embodiment of the present invention;
fig. 4 is a second schematic cross-sectional view of another embodiment of the present invention.
Names of corresponding parts represented by numerals and letters in the drawings:
1-a PTC ceramic element; 2-upper metal electrode slice; 3-lower metal electrode plate; 4-a polyimide film; 5-an aluminum tube; 6-silica gel layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 2 to 4, a low noise PTC heater comprises:
the heating core body comprises a PTC ceramic element 1, an upper metal electrode plate 2 attached to the upper surface of the PTC ceramic element 1 and a lower metal electrode plate 3 attached to the lower surface of the PTC ceramic element 1;
the polyimide film 4 is wrapped on the heating core body, and a silica gel layer 6 is coated on the partial position or the whole position between the inner layer of the polyimide film 4 and the heating core body;
and the aluminum pipe 5 is sleeved on the periphery of the polyimide film 4.
The beneficial effect of adopting above-mentioned technical scheme is: the polyimide film is bonded with the heating core body through the silica gel layer, so that the action amplitude of the polyimide film in the diastole is greatly reduced, and the noise generated when the heater works is reduced or even eliminated.
As shown in fig. 3, in other embodiments of the present invention, the silica gel layer 6 is coated on the upper surface of the upper metal electrode sheet 2 and the lower surface of the lower metal electrode sheet 3.
As shown in fig. 4, in other embodiments of the present invention, the silica gel layer 6 is coated on both side surfaces of the PTC ceramic element 1.
As shown in fig. 2, in other embodiments of the present invention, the widths of the upper and lower metal electrode sheets 2 and 3 are narrower than the width of the PTC ceramic element 1, and a silicone layer 6 is coated between the PTC ceramic element 1 and the upper metal electrode sheet 2 and between the PTC ceramic element 1 and the lower metal electrode sheet 3, and it is particularly noted that the region of the upper surface of the PTC ceramic element 1 not covered with the upper metal electrode sheet and the region of the lower surface of the PTC ceramic element 1 not covered with the lower metal electrode sheet also have the silicone layer 6. In this way, when coating silica gel, the coating is only directly coated on the upper and lower surfaces of the PTC ceramic element 1, and then the upper and lower metal electrode plates are attached, and due to the action of the extrusion force, the excess gel is generated on both sides of the upper and lower metal electrode plates, so that the silica gel layer 6 enough to bond the polyimide film 4 is present on both sides of the upper and lower metal electrode plates.
In other embodiments of the present invention, the silica gel layer is coated on: any or all of the upper surface of the upper metal electrode plate, the lower surface of the lower metal electrode plate, two side surfaces of the PTC ceramic element, the region where the upper surface of the PTC ceramic element is not covered with the upper metal electrode plate, and the region where the lower surface of the PTC ceramic element is not covered with the lower metal electrode plate. During actual coating, the whole surface can be selected to be coated according to the structure and the size of an actual product, and the local position of a certain surface can also be coated only, so that the polyimide film can be effectively bonded and the noise generated by the heated fluctuation of the polyimide film can be prevented.
In other embodiments of the present invention, the silicone rubber is also coated between the upper metal electrode sheet 2 and the upper surface of the PTC ceramic element 1, and between the lower metal electrode sheet 3 and the lower surface of the PTC ceramic element 1. The beneficial effect of adopting above-mentioned technical scheme is: the heat conduction efficiency between the PTC ceramic element and the upper and lower metal electrode plates is improved.
The above embodiments are only for illustrating the technical conception and the features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (6)
1. A low noise PTC heater, comprising:
the heating core body comprises a PTC ceramic element, an upper metal electrode plate attached to the upper surface of the PTC ceramic element and a lower metal electrode plate attached to the lower surface of the PTC ceramic element;
the polyimide film is wrapped on the heating core body, and a silica gel layer is coated at the partial position or the whole position between the inner layer of the polyimide film and the heating core body;
and the aluminum pipe is sleeved on the periphery of the polyimide film.
2. A low noise PTC heater according to claim 1, wherein the silicone layer is coated on: the upper surface of the upper metal electrode plate, or/and the lower surface of the lower metal electrode plate.
3. A low noise PTC heater according to claim 1, wherein the silica gel layer is coated on both sides of the PTC ceramic element.
4. A low noise PTC heater according to claim 1, wherein the upper and lower metal electrode sheets each have a width narrower than that of the PTC ceramic element, and the upper surface of the PTC ceramic element is not covered with the upper metal electrode sheet, or/and the lower surface of the PTC ceramic element is not covered with the lower metal electrode sheet, and has a silicone gel layer.
5. A low noise PTC heater according to claim 1, wherein the silicone layer is coated on: any or all of the upper surface of the upper metal electrode plate, the lower surface of the lower metal electrode plate, two side surfaces of the PTC ceramic element, a region where the upper surface of the PTC ceramic element is not covered with the upper metal electrode plate, and a region where the lower surface of the PTC ceramic element is not covered with the lower metal electrode plate.
6. A low noise PTC heater according to claim 1, wherein a space between the upper metal electrode sheet and the upper surface of the PTC ceramic element and a space between the lower metal electrode sheet and the lower surface of the PTC ceramic element are also coated with silicon gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020748552.1U CN211909206U (en) | 2020-05-08 | 2020-05-08 | Low-noise PTC heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020748552.1U CN211909206U (en) | 2020-05-08 | 2020-05-08 | Low-noise PTC heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211909206U true CN211909206U (en) | 2020-11-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020748552.1U Active CN211909206U (en) | 2020-05-08 | 2020-05-08 | Low-noise PTC heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211909206U (en) |
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2020
- 2020-05-08 CN CN202020748552.1U patent/CN211909206U/en active Active
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