CN214177586U

CN214177586U - PTC heater

Info

Publication number: CN214177586U
Application number: CN202023036112.2U
Authority: CN
Inventors: 吴翔; 闻俊涛; 鄂新刚
Original assignee: SHENZHEN SHARING ELECTRONICS CO Ltd
Current assignee: SHENZHEN SHARING ELECTRONICS CO Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-10
Anticipated expiration: 2030-12-15

Abstract

The application relates to the technical field of heating in general, and particularly relates to a PTC heater which comprises a heat dissipation piece, a heating body and a step part, wherein a heating cavity is formed in the heat dissipation piece, and a first end and a second end, opposite to the heat dissipation piece, of the heat dissipation piece are both arranged in an opening manner; the heating body is arranged in the heating cavity; the step part is arranged on the heat radiating piece and is used for being matched with the water channel part; the step portion includes first face, second face and the third face that connects gradually. The utility model provides a through step portion realize with water course part cooperation back, improve the compactness of laminating between the adjacent surface of radiating piece and water course part, great improvement radiating effect.

Description

PTC heater

Technical Field

The present application relates generally to the field of heating technology, and more particularly, to a PTC heater.

Background

The PTC heater is composed of a PTC ceramic heating element and a heat radiating element, so that the PTC heater has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant-temperature and power-saving heater.

The PTC heater is widely applied to the fields of air conditioners, fan heaters, bath heaters, bathtub heating and the like. However, in the process of actual installation and use, because the heat dissipation piece of the PTC heater is a plane, the edge of the heat dissipation piece is pressed to form a cambered surface after the water channel aluminum piece and the heat dissipation piece are assembled, so that the heat dissipation piece is not tightly attached to the water channel aluminum piece, and the PTC heater can generate the phenomena of low power and poor heat dissipation effect in the working process.

SUMMERY OF THE UTILITY MODEL

In order to solve among the prior art PTC heater installation back and water course aluminium part laminating inseparable, the not good enough technical problem of radiating effect, the application provides a PTC heater.

In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:

according to an aspect of the present application, there is provided a PTC heater including:

the heat dissipation device comprises a heat dissipation piece, a heat dissipation piece and a heat dissipation piece, wherein a heating cavity is formed inside the heat dissipation piece, and a first end and a second end, which are opposite to each other, of the heat dissipation piece are both arranged in an opening manner;

the heating body is arranged in the heating cavity;

the step part is arranged on the heat radiating piece and is used for being matched with the water channel part; the step portion includes first face, second face and the third face that connects gradually.

According to an embodiment of the present application, wherein the step extends from the first end to the second end.

According to an embodiment of the present application, the heating cavities are provided in plurality, and adjacent heating cavities are separated by a support rib.

According to an embodiment of the present application, the heat dissipation member is a plate-shaped structure, the plate-shaped structure includes a first plate body, a first connection section, a second plate body and a second connection section, which are connected in sequence, and the first plate body, the first connection section, the second connection section and the second plate body enclose the heat generation cavity.

According to an embodiment of the present application, two step portions are disposed on each of the first plate body and the second plate body.

According to an embodiment of the present application, each of the step portions is respectively disposed on one side of the first board body close to the first connection section, on one side of the second connection section close to the first board body and on one side of the second connection section close to the second board body.

According to an embodiment of the present application, the water channel device further comprises a water channel part, wherein the water channel part comprises a fourth surface, a fifth surface and a sixth surface which are sequentially connected;

when the heat dissipation piece is matched with the water channel part, one side of the sixth surface, which is close to the fifth surface, is attached to the first surface, and the middle position of the sixth surface is attached to the third surface; or the sixth surface is sequentially attached to the first surface, the second surface and the third surface.

According to an embodiment of the application, wherein the first end and the second end are both provided with a sealing plug, and two sides of the sealing plugs deviating from each other are both provided with silica gel.

According to an embodiment of the present application, the heat generating body includes a PTC element, and an electrode sheet, an inner insulating layer, a metal sheet, and an outer insulating layer which are provided in this order outside the PTC element.

According to an embodiment of the present application, each of the first connection section and the second connection section is inwardly recessed.

According to the technical scheme, the PTC heater has the advantages that: the arrangement of the step part enables the heat radiating piece to be assembled with the water channel part, the attaching tightness between the adjacent surfaces of the heat radiating piece and the water channel part is improved, and therefore the heat radiating effect of the PTC heater in the working process is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic view (a) of the overall structure of a PTC heater according to an exemplary embodiment.

Fig. 2 is a left side view of fig. 1 in a PTC heater according to an exemplary embodiment.

Fig. 3 is a schematic view showing a configuration of a PTC heater mainly embodying a heat radiating member to be fitted to a waterway member according to an exemplary embodiment.

Fig. 4 is a schematic view (ii) showing the overall structure of a PTC heater according to an exemplary embodiment.

Fig. 5 is a partial enlarged view of a portion a of fig. 4 of a PTC heater according to an exemplary embodiment.

Wherein the reference numerals are as follows:

1. a heat sink; 2. a heat generating cavity; 3. a first end; 4. a second end; 5. a heating element; 6. a step portion; 7. a waterway member; 8. a first side; 9. a second face; 10. a third surface; 11. supporting ribs; 12. a first plate body; 13. a second plate body; 14. a first connection section; 15. a second connection section; 16. a fourth surface; 17. a fifth aspect; 18. a sixth side; 19. a sealing plug; 20. silica gel; 21. a PTC element; 22. an electrode sheet; 23. an inner insulating layer; 24. a metal sheet; 25. an outer insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 5, a PTC heater includes a heat sink 1. The upper end and the lower end of the heat dissipation piece 1 are respectively a first end 3 and a second end 4, the first end 3 and the second end 4 are both arranged in an opening mode, and the inside of the heat dissipation piece 1 is arranged in a hollow mode. The heat dissipation device comprises a heat dissipation piece 1, and is characterized in that a heating cavity 2 is arranged in the heat dissipation piece 1, a heating body 5 is arranged in the heating cavity 2, a lead is connected to the heating body 5, and the lead extends out of the heat dissipation piece 1 and is used for being electrified. Silica gel 20 is arranged on the first end 3 and the second end 4, a sealing plug 19 is arranged on one side, close to each other, of the two silica gels 20, and the sealing plug 19 is tightly connected with the adjacent silica gel 20.

The heating body 5 is filled with water, the heating body 5 can generate heat after the conducting wires are electrified, and the heating body 5 is heated up by the water to realize the heating effect of the PTC heater through the water level heat transfer medium. The sealing plug 19 can effectively play waterproof, dustproof and other effects, the silica gel 20 can further play a waterproof role, and the safety and the reliability of the device in the using process are improved.

In the prior art, after the water channel part 7 is matched with the PTC heater, the protruding part of the water channel part 7 can extrude the first end 3 and the second end 4 of the heat sink 1, and the heat sink 1 is pressed to make the two ends of the heat sink form an inward concave arc shape. Therefore, after the heat sink 1 and the waterway member 7 are fixedly coupled, a gap is formed between the heat sink 1 and the waterway member 7 at the arc-shaped portion, thereby causing a poor heat dissipation effect of the PTC heater.

Further, the PTC heater further includes a step portion 6, the step portion 6 is disposed at the first end 3 or the second end 4 of the heat sink 1, and the step portion 6 includes a first surface 8, a second surface 9, and a third surface 10 which are sequentially connected. When the PTC heater is assembled with the waterway member 7, the stepped portion 6 is closely fitted to the convex portion of the waterway member 7, thereby improving the heat radiation effect of the PTC heater.

Preferably, there are two steps 6, and the two steps 6 are respectively disposed on the first end 3 and the second end 4. Therefore, after the PTC heater is installed on the water channel part 7, the two opposite sides of the heat radiating piece 1 can be tightly attached to the water channel part 7, and the matching reliability and the heat radiation performance are improved.

Specifically, the step portion 6 may be formed on the heat sink 1 by any method known in the art, including but not limited to roll forming or pressing. The forming manner of the step portion 6 is not limited in the present application, and all the forming manners should fall within the protection scope of the present application.

Further, the heat sink 1 is a plate-shaped structure, the plate-shaped structure includes a first plate 12, a first connecting section 14, a second plate 13, and a second connecting section 15, which are connected in sequence, and the first plate 12, the first connecting section 14, the second connecting section 15, and the second plate 13 surround the heat generating cavity 2.

Specifically, the first connection section 14 and the second connection section 15 are both recessed inward. When the heat sink 1 is compressed, the first connection section 14 and the second connection section 15 are further recessed, and the pressure of the heat sink 1 on the internal structure is not easily released.

Further, the mounting of the PTC heater to the waterway members 7 is generally specifically performed such that the PTC heater is placed between the two waterway members 7, thereby achieving rapid heat dissipation of the PTC heater.

Preferably, two step portions 6 are provided on each of the first plate body 12 and the second plate body 13. Through the arrangement of the two step parts 6, all parts of the heat sink 1 and all parts of the water channel part 7 can be tightly attached, and no gap is ensured after the attachment.

Further, each step portion 6 is respectively disposed on one side of the first plate 12 close to the first connecting section 14, one side of the second plate 13 close to the first connecting section 14, one side of the first plate 12 close to the second connecting section 15, and one side of the second plate 13 close to the second connecting section 15.

Further, the step portion 6 extends from the first end 3 to the second end 4, so that when the PTC heater is fitted to the waterway component 7, the parts of the first plate body 12 and the second plate body 13 of the heat sink 1 are closely attached to the waterway component 7.

Further, the waterway part 7 includes a fourth surface 16, a fifth surface 17 and a sixth surface 18 which are sequentially connected; when the heat sink 1 is matched with the waterway component 7, one side of the sixth surface 18 close to the fifth surface 17 is attached to the first surface 8, and the middle position of the sixth surface 18 is attached to the third surface 10; or the sixth surface 18 is attached to the first surface 8, the second surface 9, and the third surface 10 in this order.

When the waterway member 7 is fitted to the radiator member 1, the waterway member 7 is provided at a side close to the first plate body 12, and the waterway member 7 is provided at a side close to the second plate body 13. The sixth surfaces 18 of the two waterway members 7 are disposed close to each other so that the fourth surfaces 16 adjacent to each other of the two waterway members 7 are attached to each other, and the sides of the waterway members 7 close to the fourth surfaces 16 are fixedly connected by screws or nuts. Under the fixed connection of a screw or a nut, the heat sink 1 is clamped between the sixth surfaces 18, and the sixth surfaces 18 are deformed into concave arc surfaces under the pressure of the heat sink 1 by the sixth surfaces 18.

Further, the first face 8 is orthogonal to the second face 9. Make sixth 18 after deformation, sixth 18 is close to one side of fifth 17 and laminates with first face 8, and the middle part position of sixth 18 and the laminating of third face 10, and then improves the compactness of laminating between water course part 7 and the radiating piece 1, improves the radiating efficiency.

Specifically, the present application does not limit the extending depth of the second face 9. The extension depth of the second surface 9 can also be matched with the depth of the water channel part 7 according to needs, so that the specific depth is determined, the matching process of different PTC heaters with the water channel parts 7 of different models is guaranteed, the fitting effect between the first surface 8 and the sixth surface 18 is guaranteed, and the heat dissipation effect of the PTC heaters is guaranteed.

Further, can also set up first face 8 and second face 9 into the cambered surface that connects gradually for water course part 7 and the assembly back of radiating piece 1, first face 8, second face 9 and third face 10 can closely cooperate in proper order with the sixth 18 after the deformation, great improvement the inseparability of complex between radiating piece 1 and the water course part 7.

Specifically, in order to make the connection between the waterway component 7 and the radiator member 1 tighter. The radian of the cambered surface of the first surface 8 is greater than that of the cambered surface of the second surface 9. After two adjacent fourth surfaces 16 are fixedly connected, the arc deformation of the sixth surface 18 close to the fifth surface 17 is larger than that of the sixth surface 18 far from the fifth surface 17. Therefore, the portion of the sixth surface 18 that abuts the first surface 8 is deformed more than the portion of the sixth surface 18 that abuts the second surface 9.

Further, the heat radiating member 1 is internally provided with a plurality of heating cavities 2, and each heating cavity 2 is internally provided with at least one heating body 5, so that the heating effect of the PTC heater is better.

Specifically, a support rib 11 is arranged between two adjacent heating cavities 2, and the stability of the internal structure of the heat sink 1 is improved by the support rib 11.

Further, a plurality of support ribs 11 are provided at intervals in the extending direction of the heat sink 1, thereby further improving the structural strength of the PTC heater.

Further, the heating element 5 includes a PTC element 21, and an electrode sheet 22, an inner insulating layer 23, a metal sheet 24, and an outer insulating layer 25 are sequentially sleeved outside the PTC element 21. The metal sheet 24 may be an aluminum foil, a copper aluminum foil, or other metal sheet 24. The inner insulating layer 23 prevents the electric conduction between the electrode sheet 22 and the metal sheet 24, and the outer insulating layer 25 effectively prevents the electric leakage of the heating body 5, thereby improving the safety of the device.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A PTC heater, comprising:

the heat dissipation device comprises a heat dissipation piece (1), wherein a heating cavity (2) is formed inside the heat dissipation piece (1), and a first end (3) and a second end (4) which are opposite to the heat dissipation piece (1) are both arranged in an opening manner;

the heating body (5) is arranged in the heating cavity (2);

the step part (6) is arranged on the heat radiating piece (1) and is used for being matched with the water channel part (7); the step part (6) comprises a first surface (8), a second surface (9) and a third surface (10) which are connected in sequence.

2. A PTC heater according to claim 1, characterised in that the step (6) extends from the first end (3) to the second end (4).

3. The PTC heater according to claim 1, wherein the heat generating chambers (2) are provided in plurality, and adjacent heat generating chambers (2) are partitioned by support ribs (11).

4. A PTC heater according to claim 1, characterized in that the heat radiating member (1) is a plate-like structure comprising a first plate body (12), a first connecting section (14), a second plate body (13) and a second connecting section (15) which are connected in sequence, the first plate body (12), the first connecting section (14), the second connecting section (15) and the second plate body (13) enclosing the heat generating cavity (2).

5. The PTC heater according to claim 4, wherein the first plate body (12) and the second plate body (13) are each provided with two stepped portions (6).

6. The PTC heater according to claim 5, wherein the step parts (6) are provided on a side of the first plate body (12) adjacent to the first connecting section (14), a side of the second plate body (13) adjacent to the first connecting section (14), a side of the first plate body (12) adjacent to the second connecting section (15), and a side of the second plate body (13) adjacent to the second connecting section (15), respectively.

7. The PTC heater according to claim 1, wherein the waterway member (7) includes a fourth face (16), a fifth face (17), and a sixth face (18) which are arranged in series;

when the heat dissipation piece (1) is matched with the water channel part (7), one side of the sixth surface (18) close to the fifth surface (17) is attached to the first surface (8), and the middle position of the sixth surface (18) is attached to the third surface (10); or the sixth surface (18) is attached to the first surface (8), the second surface (9) and the third surface (10) in sequence.

8. A PTC heater according to claim 1, characterised in that both the first end (3) and the second end (4) are provided with sealing plugs (19), and that the sides of both sealing plugs (19) facing away from each other are provided with silicone rubber (20).

9. The PTC heater according to claim 1, wherein the heat-generating body (5) comprises a PTC element (21), and an electrode sheet (22), an inner insulating layer (23), a metal sheet (24) and an outer insulating layer (25) which are provided in this order outside the PTC element (21).

10. The PTC heater according to claim 6, wherein the first connection section (14) and the second connection section (15) are each recessed inward.