CN214381452U - Ceramic heater and radiating strip thereof - Google Patents
Ceramic heater and radiating strip thereof Download PDFInfo
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- CN214381452U CN214381452U CN202022837770.5U CN202022837770U CN214381452U CN 214381452 U CN214381452 U CN 214381452U CN 202022837770 U CN202022837770 U CN 202022837770U CN 214381452 U CN214381452 U CN 214381452U
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- heat dissipation
- dissipation strip
- wedge groove
- ceramic heater
- heating element
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Abstract
The utility model relates to a ceramic heater and heat dissipation strip thereof, it comprises an at least PTC heating element and an at least heat dissipation strip, and this at least heat dissipation strip pastes in one of them at least surface of each this PTC heating element through an adhesion coating that has electrically conductive heat conductivity, the utility model discloses a characterized in that this heat dissipation strip is formed with the complex on the surface to the laminating that should PTC heating element and says sunken wedge groove, and makes the adhesion coating between this PTC heating element and this heat dissipation strip overflow in each this wedge groove and form the tackification portion, so, can utilize the design of the surperficial complex wedge groove of heat dissipation strip laminating for this heat dissipation strip can produce great adaptability to strain, makes its adhesion area increase by a wide margin simultaneously, and can produce powerful pulling force in the heating process, and can improve its degree of adhesion, and then prolong its life.
Description
Technical Field
The utility model relates to a ceramic heater's technical field particularly indicates a ceramic heater and heat dissipation strip thereof to enable it to have the pulling force and the adhesive force of preferred in heating process, avoid causing the subassembly to peel off the damage because of long-term and repetitive heating, and then can prolong this ceramic heater's life.
Background
In a general ceramic heater, a heating element of at least one Positive Temperature Coefficient thermistor (PTC) is disposed on a surface of at least one heat dissipation strip, wherein the PTC is a hard heating element generally called a PTC heating element, and the PTC heating element is heated by itself after being energized to make a resistance value enter a jump zone, and the resistance value rapidly increases with Temperature rise within a certain Temperature range. Accordingly, ceramic heaters are widely used in constant temperature heaters, home appliances, vehicle air conditioner heating, and line protection devices.
As mentioned above, the ceramic heater is formed by bonding the PTC heating element and the corrugated aluminum heat dissipation strip at high temperature, wherein the heat dissipation strip can be directly used as a conductor to conduct the PTC heating element to obtain external power, and when a current passes through the PTC heating element, the PTC heating element generates heat, thereby achieving the heating effect. Because the heat dissipation strip has a frame body and a wave spring plate arranged in the frame body, and the surface of the frame body is coated with a large amount of mucilage glue with excellent electric conduction and heat conduction performance to stick the PTC heating element and the heat dissipation strip, because the PTC heating element and the heat dissipation strip have different thermal expansion coefficients, after long-time or frequent heating, the adhesion force between the PTC heating element and the heat dissipation strip can be damaged, and the adhesion surface can generate shear stress, so that the phenomena of gradual peeling and carbonization between the mucilage glue layer and the heat dissipation strip can be generated, the heating efficiency and the heat dissipation efficiency of the ceramic heater can be influenced, even the heating effect is lost due to complete carbonization, and the service life of the ceramic heater can be further shortened, for example, the ceramic heater for vehicles is heated by low voltage (such as 12V), when the power of more than 120W is required to be generated, the surface of the ceramic heater is carried by higher current (such as 10A), the service life of the ceramic heater can be greatly shortened, so that the automobile needs to be frequently changed and repaired, which causes customer complaints.
In other words, the existing ceramic heater has the problem of adhesive force damage after heating, which results in peeling off due to shearing tension, shortens the service life thereof, and has a great improvement space, which is also the need of the utility model to research and improve.
In view of this, the present invention provides a ceramic heater and a heat dissipation strip thereof, which overcome the inconvenience and puzzlement caused by poor adhesion in the prior art by providing a ceramic heater and a heat dissipation strip thereof, which have been developed based on the above problems in the prior art, through careful research and application of theories, and have many years of abundant design, development and practical manufacturing experiences in the related industries, and are improved in view of the deficiency of the prior art.
SUMMERY OF THE UTILITY MODEL
Therefore, the main objective of the present invention is to provide a ceramic heater and a heat dissipation strip thereof, so as to improve the heating strain, avoid the damage caused by peeling off after long-time or frequent heating, and ensure the heating efficiency and heat dissipation efficiency.
Further, another primary object of the present invention is to provide a ceramic heater and a heat dissipating strip thereof, which can increase the tensile force and the adhesion, and can carry a high current, thereby effectively prolonging the service life thereof.
Based on this, the utility model discloses mainly through following technological means, realize aforementioned purpose and efficiency specifically: the PTC heating element comprises at least one PTC heating element and at least one heat dissipation strip, wherein the at least one heat dissipation strip is adhered to at least one surface of each PTC heating element through an adhesive layer with electric and thermal conductivity;
a plurality of concave wedge grooves are formed on the bonding surface of the heat dissipation strip corresponding to the PTC heating element, and at least one end of the two ends of each wedge groove is communicated with the outside of the heat dissipation strip, so that the adhesion layer between the PTC heating element and the heat dissipation strip overflows in each wedge groove to form a tackifying part.
So, through the concrete realization of above-mentioned technical means, make the utility model discloses ceramic heater can utilize the design of the heat dissipation strip laminating complex wedge groove on the surface, when it generates heat, can make this heat dissipation strip can produce great adaptability, simultaneously through the produced adhesion promotion portion of the relative plate body wedge groove of adhesion coating, make its adhesion area increase by a wide margin, and then can produce powerful pulling force in the heating process, and improve the adhesion degree, and then prolong its life, thereby increase the added value of product, and promote its economic benefits.
The utility model further realizes the above purpose and efficacy by the following technical means; such as:
the heat dissipation strip is characterized in that a corrugated elastic sheet is arranged on a plate body, the plate body and the elastic sheet can be made of aluminum-based materials easy to conduct heat, and the attaching surface is formed on the surface of the plate body corresponding to the PTC heating element.
The heat dissipation strip is provided with a plurality of concave wedge grooves corresponding to the attaching surface of the corrugated elastic sheet, so that the heat dissipation strip can be attached to the corrugated elastic sheet by utilizing the adhesive layer with electric and thermal conductivity.
The wedge groove depth of the heat dissipation strip is 0.03-0.5 mm.
The wedge groove of the heat dissipation strip can be a one-way arc wedge groove.
The wedge groove of the heat dissipation strip can be a bidirectional staggered arc wedge groove.
The wedge groove of the heat dissipation strip can be a one-way linear wedge groove.
The wedge groove of the heat dissipation strip can be a linear wedge groove which is staggered in two directions.
The wedge groove of the heat dissipation strip can be a one-way wavy wedge groove.
The wedge groove of the heat dissipation strip can be a wave-shaped wedge groove staggered in two directions.
The wedge groove of the heat dissipation strip can be a wedge groove with a V-shaped section.
The wedge groove of the heat dissipation strip can be a wedge groove with a semicircular section.
The wedge groove of the heat dissipation strip can be a wedge groove with a rectangular section.
To further clarify the structure, features and other objects of the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings, which are provided for a person skilled in the art.
Drawings
Fig. 1 is an external view of the ceramic heater of the present invention.
Fig. 2 is an exploded view of the ceramic heater of the present invention for illustrating the component aspects and the relative relationship thereof.
Fig. 3A and 3B are schematic surface views of a preferred embodiment of the heat dissipation strip frame body in the ceramic heater of the present invention, wherein fig. 3A is a one-way arc wedge groove, and fig. 3B is a two-way staggered arc wedge groove.
Fig. 4A and 4B are schematic views of another surface of the heat dissipation strip frame body in the ceramic heater according to the present invention, wherein fig. 4A is a one-way linear wedge groove, and fig. 4B is a two-way staggered linear wedge groove.
Fig. 5A and 5B are schematic views of another surface of the heat dissipation strip frame body in the ceramic heater of the present invention, wherein fig. 5A is a one-way wavy wedge groove, and fig. 5B is a two-way staggered wavy wedge groove.
Fig. 6A, 6B, and 6C are schematic partial cross-sectional views of the heat dissipation strip frame body in the ceramic heater according to the present invention, wherein fig. 6A is a V-shaped wedge groove, fig. 6B is a semicircular wedge groove, and fig. 6C is a rectangular wedge groove.
Fig. 7A and 7B are schematic sectional views of the ceramic heater according to the present invention, for explaining the relative relationship after the ceramic heater is assembled, wherein fig. 7A is a state in which the heat dissipation strip is adhered on one side, and fig. 7B is a state in which the heat dissipation strip is adhered on both sides.
Fig. 8 is a schematic side plan view of another embodiment of the ceramic heater of the present invention.
Fig. 9 is an exploded view of another embodiment of the ceramic heater according to the present invention, illustrating the components and their relative relationship.
Description of reference numerals: 10-a ceramic heater; 20-a PTC heating element; 30-heat dissipation strips; 31-a plate body; 32-a conforming surface; 33-wedge groove; 35-a glue region; 36-hole slots; 37-wave elastic sheet; 38-electrode sheet; 50-an adhesive layer; 55-adhesion promotion part.
Detailed Description
The present invention relates to a ceramic heater, which is illustrated with an accompanying drawing, in the specific embodiments and components thereof, all references relating to front and rear, left and right, top and bottom, upper and lower parts, and horizontal and vertical are only used for convenient description, not limitation of the present invention, nor is its component limited to any position or space direction. The dimensions specified in the figures and the description may vary depending on the design and requirements of particular embodiments of the invention without departing from the scope of the claims.
Referring to fig. 1 and 2, the ceramic heater 10 of the present invention comprises at least one PTC heating element 20 and at least one heat dissipation strip 30, wherein each PTC heating element 20 is adhered to the opposite surface of the at least one heat dissipation strip 30 by an adhesive layer 50, the PTC heating element 20 can be adhered to the heat dissipation strip 30 on one side (as shown in fig. 7A), the PTC heating element 20 can be adhered to the heat dissipation strip 30 on both sides (as shown in fig. 7B), each PTC heating element 20 is a hard heating element of a Positive Temperature Coefficient thermistor (PTC), the heat dissipation strip 30 is provided with a corrugated elastic sheet 37 on a plate 31, the plate 31 and the corrugated elastic sheet 37 of the heat dissipation strip 30 can be made of an aluminum-based material with easy heat conduction, and the heat dissipation strip 30 has an electrode sheet 38 on the side different from the PTC heating element 20, the heat dissipation strip 30 can directly use the electrode plate 38 as a conductor to conduct the PTC heating element 20 to obtain external power, and the adhesive layer 50 can be an adhesive with electrical and thermal conductivity, such as silica gel, which can make the PTC heating element 20 generate heat when current passes through, thereby achieving the heating effect;
as shown in fig. 2, 7A and 7B, the heat dissipating strip 30 has a plate 31 having an inner surface 32 corresponding to at least one PTC heating element 20 and an outer surface 32 corresponding to a corrugated resilient sheet 37, and the plate 31 has a plurality of concave wedge grooves 33 formed on the surface 32 corresponding to the PTC heating element 20, wherein at least one of the two ends of the wedge grooves 33 is connected to the outside, and the depth of each wedge groove 33 is 0.03-0.5 mm, and the wedge grooves 33 may be one-way arc wedge grooves 33 (fig. 3A), two-way staggered arc wedge grooves 33 (fig. 3B), one-way straight wedge grooves 33 (fig. 4A), two-way staggered straight wedge grooves 33 (fig. 4B), one-way wavy wedge grooves 33 (fig. 5A) or two-way staggered wavy wedge grooves 33 (fig. 5B), moreover, the wedge groove 33 of the plate 31 may be a wedge groove 33 with a V-shaped cross section (as shown in fig. 6A), a wedge groove 33 with a semicircular cross section (as shown in fig. 6B), or a wedge groove 33 with a rectangular cross section (as shown in fig. 6C), and as shown in fig. 7A and 7B, the adhesive layer 50 may overflow into each wedge groove 33 of the plate 31 of the heat dissipation strip 30 to form an adhesion promoting portion 55, thereby greatly increasing the adhesion area between the adhesive layer 50 and the plate 31 of the heat dissipation strip 30, and improving the adhesion between the PTC heating element 20 and the heat dissipation strip 30;
thus, a ceramic heater structure having a strong pulling force and adhesion is formed.
In practical applications, the present invention is disclosed in fig. 1, 7A and 7B, when a current passes through the at least one PTC heating element 20, the heat dissipation strip 30 can generate heat to achieve a heating effect, and the bonding surface 32 of the plate 31 of the heat dissipation strip 30 has a plurality of wedge grooves 33, so that the heat dissipation strip 30 can have a large strain when the heat dissipation strip generates heat, and can overcome the shear stress between the heat dissipation strip and the PTC heating element, and at the same time, the adhesion area between the heat dissipation strip and the ceramic heater 10 can be increased greatly due to the adhesion layer 50 generating a bonding portion 55 relative to the wedge grooves 33 of the plate 31 of the heat dissipation strip 30, so that the adhesion between the heat dissipation strip and the ceramic heating element 20 can generate a strong pulling force with the adhesion layer 50 of the heat dissipation strip 30 during the heating process, and the adhesion between the heat dissipation strip and the PTC heating element 20 can be improved.
As shown in fig. 8, in another embodiment of the ceramic heater structure of the present invention, the inner and outer bonding surfaces 32 of the plate 31 of the heat dissipation strip 30 respectively have a plurality of concave wedge grooves 33 corresponding to the at least one PTC heating element 20 and the corrugated elastic sheet 37, and at least one of the two ends of the wedge grooves 33 is connected to the outside, so that the heat dissipation strip 30 can improve the shearing force and the adhesion with the PTC heating element 20 and the corrugated elastic sheet 37.
In another embodiment of the present invention, as shown in fig. 9, at least one adhesion region 35 is formed on the attachment surface 32 of the heat dissipation strip 30 corresponding to each PTC heating element 20, and a plurality of holes 36 are formed in each adhesion region 35, wherein the outer edge of each hole 36 may be circular, rectangular or polygonal, and the depth of each hole 36 is 0.03-0.5 mm. According to some embodiments, the adhesive region 35 may be recessed relative to the attachment surface 32, and the depth of the adhesive region 35 is 0.02-0.5 mm, so that the heat dissipation strip 30 can improve the shear strength and adhesion with the PTC heating element 20.
As can be seen from the above description, the ceramic heater 10 of the present invention utilizes the design of the plural wedge grooves 33 on the plate body 31 of the heat dissipation strip 30, when it generates heat, the heat dissipation strip 30 can generate large strain, and can overcome the shear tensile stress, and at the same time, the adhesion area is greatly increased by the adhesion part 55 generated by the adhesion layer 50 relative to the wedge grooves 33 of the plate body 31, so that in the heating process, the adhesion layer 50 of the PTC heating element 20 and the heat dissipation strip 30 can generate strong pulling force, and the adhesion between the PTC heating element 20 and the heat dissipation strip 30 is improved, thereby ensuring the heating efficiency of the ceramic heater 10, and effectively prolonging the service life thereof.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A ceramic heater, characterized by: the PTC heating element comprises at least one PTC heating element and at least one heat dissipation strip, wherein the at least one heat dissipation strip is adhered to at least one surface of each PTC heating element through an adhesive layer with electric and thermal conductivity;
a plurality of concave wedge grooves are formed on the bonding surface of the heat dissipation strip corresponding to the PTC heating element, and at least one end of the two ends of each wedge groove is communicated with the outside of the heat dissipation strip, so that the adhesion layer between the PTC heating element and the heat dissipation strip overflows in each wedge groove to form a viscosity increasing part.
2. The ceramic heater of claim 1, wherein: the heat dissipation strip is characterized in that a corrugated elastic sheet is arranged on a plate body, the plate body and the elastic sheet are made of aluminum-based materials easy to conduct heat, and the attaching surface is formed on the surface of the plate body corresponding to the PTC heating element.
3. A ceramic heater as claimed in claim 2, wherein: the heat dissipation strip is provided with a plurality of concave wedge grooves on the bonding surface corresponding to the corrugated elastic sheet, so that the heat dissipation strip can be bonded with the corrugated elastic sheet by using the adhesive layer with electric and thermal conductivity.
4. A ceramic heater as claimed in claim 1 or 3, wherein: the wedge groove depth of the heat dissipation strip is 0.03-0.5 mm.
5. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a one-way arc-shaped wedge groove.
6. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a bidirectional staggered arc wedge groove.
7. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a one-way linear wedge groove.
8. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a linear wedge groove which is staggered in two directions.
9. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a one-way wavy wedge groove.
10. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a wave-shaped wedge groove which is staggered in two directions.
11. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a wedge groove with a V-shaped section.
12. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a wedge groove with a semicircular section.
13. The ceramic heater of claim 4, wherein: the wedge groove of the heat dissipation strip is a wedge groove with a rectangular section.
14. A heat dissipation strip for a ceramic heater, comprising: the heat dissipation strip is provided with at least one attaching surface, and a plurality of concave wedge grooves are formed on each attaching surface.
15. A ceramic heater, characterized by: the PTC heating element comprises at least one PTC heating element and at least one heat dissipation strip, wherein the at least one heat dissipation strip is adhered to at least one surface of each PTC heating element through an adhesive layer with electric and thermal conductivity;
the heat dissipation strip is provided with at least one adhesion area corresponding to the attaching surface of the PTC heating element, and a plurality of porous grooves are arranged in each adhesion area.
16. The ceramic heater of claim 15, wherein: the depth of the hole groove of the heat dissipation strip adhesion area is 0.03-0.5 mm.
17. A ceramic heater as claimed in claim 15 or 16, wherein: the depth of the adhesive area of the heat dissipation strip is 0.03-0.5 mm.
18. A heat dissipation strip for a ceramic heater, comprising: the heat dissipation strip has at least one bonding surface, wherein each bonding surface is formed with at least one adhesion region, and each adhesion region is provided with a plurality of porous grooves therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022837770.5U CN214381452U (en) | 2020-11-30 | 2020-11-30 | Ceramic heater and radiating strip thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022837770.5U CN214381452U (en) | 2020-11-30 | 2020-11-30 | Ceramic heater and radiating strip thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214381452U true CN214381452U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022837770.5U Active CN214381452U (en) | 2020-11-30 | 2020-11-30 | Ceramic heater and radiating strip thereof |
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| Country | Link |
|---|---|
| CN (1) | CN214381452U (en) |
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- 2020-11-30 CN CN202022837770.5U patent/CN214381452U/en active Active
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