CN220586474U

CN220586474U - Ceramic PTC electric heater with long service life

Info

Publication number: CN220586474U
Application number: CN202322224047.3U
Authority: CN
Inventors: 钱传定; 王超
Original assignee: Jiangsu Muchang Electrical Technology Co ltd
Current assignee: Jiangsu Muchang Electrical Technology Co ltd
Priority date: 2023-08-18
Filing date: 2023-08-18
Publication date: 2024-03-12
Anticipated expiration: 2033-08-18

Abstract

The utility model relates to the technical field of heaters, in particular to a ceramic PTC electric heater with long service life. The ceramic PTC electric heater with the long service life comprises an aluminum pipe, a heating body and a clamping assembly for clamping the heating body are arranged in the aluminum pipe, the clamping assembly comprises a copper sheet, the copper sheet is fixedly embedded on the inner side wall of the aluminum pipe, a fold type copper sheet is fixedly arranged on the other side of the copper sheet, and a U-shaped clamping plate is fixedly connected to the other end of the fold type copper sheet. According to the long-service-life ceramic PTC electric heater provided by the utility model, the PTC ceramic heating plates are inserted into the two groups of U-shaped clamping plates, and the corrugated copper sheets are extruded in the U-shaped clamping plates along with the insertion of the PTC ceramic heating plates, so that the direct pressure on the PTC ceramic heating plates can be buffered, meanwhile, the U-shaped clamping plates can also play a role of closely attaching to the PTC ceramic heating plates, the heat dissipation performance of a product is improved, the PTC ceramic heating plates are effectively protected from being damaged due to vibration of an aluminum pipe, and the service life of the PTC ceramic heating plates is prolonged.

Description

Ceramic PTC electric heater with long service life

Technical Field

The utility model relates to the technical field of heaters, in particular to a ceramic PTC electric heater with long service life.

Background

The electric heater is applied to damp-proof and anti-condensation occasions of power equipment such as high-low voltage switch cabinets, middle-placed cabinets, terminal boxes, box-type substations and the like. The common electric heater is comb-shaped aluminum alloy electric heater, adopts aluminum alloy section bar as the conduction radiator, and the upper portion of aluminum alloy hot plate is equipped with comb-shaped long limit fin, and the front and back side of aluminum alloy hot plate is connected with L shape mounting, and L shape mounting includes fixed limit and installation limit, and the fixed limit is connected with aluminum alloy hot plate front and back side through the mounting, for increasing radiating area, every fin all designs corrugated channel, has the conductor that generates heat between fin and the apron, and the conductor that generates heat is resistance wire generally. The main disadvantages of this structure are: the heat dissipation surface is few, so that the heating effect is poor, and the heat efficiency of the heater is low; in addition, the heat efficiency of resistance wire heating is low, and is comparatively power consumptive, and self can not automatic constant temperature, and when resistance wire heated, the surface can appear "reddening" phenomenon, can appear potential safety hazard such as conflagration.

Therefore, there is a need to provide a new ceramic PTC electric heater with a long life span to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a ceramic PTC electric heater with long service life.

The utility model provides a long-life ceramic PTC electric heater which comprises an aluminum pipe, wherein a heating body and a clamping assembly for clamping the heating body are arranged in the aluminum pipe, the clamping assembly comprises a copper sheet, the copper sheet is fixedly embedded on the inner side wall of the aluminum pipe, a fold-shaped copper sheet is fixedly arranged on the other side of the copper sheet, and a U-shaped clamping plate is fixedly connected with the other end of the fold-shaped copper sheet;

binding terminals for covering the ends of the aluminum pipe are sleeved at two ends of the aluminum pipe, and the binding terminals are electrically connected with a heating body;

and heat dissipation components are embedded at two sides of the aluminum pipe.

Preferably, the clamping components are provided with two groups, and the two groups of clamping components are symmetrically distributed in the aluminum pipe.

Preferably, the heating body adopts a PTC ceramic heating sheet, and the PTC ceramic heating sheet is inserted in the aluminum pipe and props against the inner plate wall of the U-shaped clamping plate in the two groups of clamping assemblies.

Preferably, the heat dissipation assembly comprises a U-shaped frame, the U-shaped frame is fixedly embedded on the side wall of the aluminum pipe, and a plurality of heat dissipation fins distributed at equal intervals are fixedly embedded in the U-shaped frame.

Preferably, the end of each radiating fin is provided with an arc-shaped surface deflected in the same direction.

Preferably, the upper end face and the lower end face of the aluminum pipe are provided with a plurality of uniformly distributed spherical cavities, and copper balls are arranged in each spherical cavity.

Preferably, one third of the sphere of the copper sphere extends out of the spherical cavity and one third of the sphere of the copper sphere extends inwardly into the aluminum tube.

Compared with the related art, the ceramic PTC electric heater with the long service life has the following beneficial effects:

1. according to the utility model, the PTC ceramic heating sheets are inserted into the two groups of U-shaped clamping plates, and the corrugated copper sheets are extruded in the U-shaped clamping plates along with the insertion of the PTC ceramic heating sheets, so that the corrugated copper sheets are pressed, and the corrugated copper sheets have an elastic function, so that the direct pressure on the PTC ceramic heating sheets can be buffered, meanwhile, the U-shaped clamping plates can also play a role in close fit with the PTC ceramic heating sheets, the heat dissipation performance of products is improved, the PTC ceramic heating sheets are not easily damaged due to vibration of aluminum tubes, and the service life of the PTC ceramic heating sheets is prolonged;

2. according to the utility model, the arc-shaped surfaces are arranged on the radiating fins, so that the arc-shaped radiating channels are formed between the adjacent radiating fins, thereby being beneficial to air circulation and increasing the circulation range of air in the indoor unit of the air conditioner;

3. according to the aluminum pipe, the upper end face and the lower end face of the aluminum pipe are respectively provided with the copper ball, one hemisphere of the copper ball extends into the aluminum pipe, and the other hemisphere extends out of the aluminum pipe, so that the heat absorption area of the heating body can be increased by the copper ball inside the aluminum pipe, and the heat dissipation capacity of the copper ball gas outside the aluminum pipe can be rapidly increased, and the heat dissipation performance of the aluminum pipe is further enhanced.

Drawings

FIG. 1 is a schematic diagram of a ceramic PTC electrical heater with long life according to a preferred embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of the inside-aluminum pipe joint assembly shown in FIG. 1;

fig. 3 is a schematic structural view of the aluminum shown in fig. 1.

Reference numerals in the drawings: 1. an aluminum pipe; 1a, spherical cavity; 2. a heating body; 3. a clamping assembly; 31. copper sheets; 32. a pleated copper sheet; 33. a U-shaped clamping plate; 4. a connection terminal; 5. a heat dissipation assembly; 51. a U-shaped frame; 52. a heat sink; 53. an arc surface; 6. copper balls.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 3, a long-life ceramic PTC electric heater according to an embodiment of the present utility model comprises: aluminum pipe 1, heating member 2 and joint subassembly 3.

In the embodiment of the present utility model, referring to fig. 1 and 2, a heating body 2 and a clamping assembly 3 for clamping the heating body 2 are disposed in the aluminum tube 1, two groups of clamping assemblies 3 are disposed in the aluminum tube 1, the two groups of clamping assemblies 3 are symmetrically distributed in the aluminum tube 1, the clamping assembly 3 includes a copper sheet 31, the copper sheet 31 is fixedly embedded in the inner side wall of the aluminum tube 1, a corrugated copper sheet 32 is fixedly mounted on the other side of the copper sheet 31, and a U-shaped clamping plate 33 is fixedly connected to the other end of the corrugated copper sheet 32;

the heating body 2 adopts PTC ceramic heating sheets, the PTC ceramic heating sheets are inserted in the aluminum tube 1 and are propped against the inner plate walls of the U-shaped clamping plates 33 in the two groups of clamping assemblies 3, the two ends of the aluminum tube 1 are respectively sleeved with a connecting terminal 4 for covering the end head of the aluminum tube 1, and the connecting terminal 4 is electrically connected with the heating body 2.

It should be noted that: the PTC ceramic heating plates are inserted into the two groups of U-shaped clamping plates 33, and the corrugated copper sheets 32 are extruded in the U-shaped clamping plates 33 along with the insertion of the PTC ceramic heating plates, so that the corrugated copper sheets 32 are pressed, direct pressure to the PTC ceramic heating plates can be buffered due to the elastic function of the corrugated copper sheets 32, meanwhile, the U-shaped clamping plates 33 can also play a role in closely attaching the PTC ceramic heating plates, the heat dissipation performance of products is improved, the PTC ceramic heating plates are not easy to damage due to vibration of the aluminum tubes 1, and the service life of the PTC ceramic heating plates is prolonged.

In the embodiment of the present utility model, referring to fig. 1, heat dissipation components 5 are embedded on both sides of the aluminum tube 1, the heat dissipation components 5 include a U-shaped frame 51, the U-shaped frame 51 is fixedly embedded on a side wall of the aluminum tube 1, a plurality of heat dissipation fins 52 distributed in equal intervals are fixedly embedded in the U-shaped frame 51, and an end of each heat dissipation fin 52 is provided with an arc surface 53 deflecting in the same direction.

It should be noted that: because the arc-shaped surface 53 is arranged on the radiating fins 52, an arc-shaped radiating channel is formed between the adjacent radiating fins 52, thereby being beneficial to air circulation and increasing the circulation range of air in the air conditioner indoor unit.

In the embodiment of the present utility model, referring to fig. 1 and 3, a plurality of uniformly distributed spherical cavities 1a are formed on the upper and lower end surfaces of the aluminum tube 1, copper balls 6 are installed in each spherical cavity 1a, one third of the balls of the copper balls 6 extend out of the spherical cavity 1a, and one third of the balls of the copper balls 6 extend into the aluminum tube 1.

It should be noted that: the upper end face and the lower end face of the aluminum pipe 1 are both provided with copper balls 6, a half sphere of each copper ball 6 extends into the aluminum pipe 1, and the other half sphere extends out of the aluminum pipe 1, so that the heat absorption area of the heating body 2 can be increased by the copper balls 6 inside the aluminum pipe, and the heat dissipation capacity of the copper balls 6 outside the aluminum pipe can be rapidly increased, so that the heat dissipation performance of the radiator is further enhanced.

The working principle of the ceramic PTC electric heater with long service life provided by the utility model is as follows:

the PTC ceramic heating plates are inserted into the two groups of U-shaped clamping plates 33, and the corrugated copper sheets 32 are extruded in the U-shaped clamping plates 33 along with the insertion of the PTC ceramic heating plates, so that the corrugated copper sheets 32 are pressed, the direct pressure on the PTC ceramic heating plates can be buffered because the corrugated copper sheets 32 have elastic functions, meanwhile, the U-shaped clamping plates 33 can also play a role of closely attaching the PTC ceramic heating plates, the heat dissipation performance of the product is improved, the PTC ceramic heating plates are not easy to damage due to vibration of the aluminum tubes 1, the service life of the PTC ceramic heating plates is prolonged,

and owing to be provided with the arcwall face 53 on the fin 52 to form the arc heat dissipation passageway between the adjacent fin 52, be favorable to the circulation of air, increased the inside circulation scope of air in the air conditioning indoor set, both ends face all are provided with copper ball 6 about the aluminum pipe 1 simultaneously, and copper ball 6's hemisphere is inside to be extended to in the aluminum pipe 1, and the other half bulb extends outside aluminum pipe 1, so inside copper ball 6 can improve the heat absorption area to heating member 2, and the copper ball 6 gas in the outside can be quick the outer heat dissipation capacity, thereby further strengthened ware heat dispersion.

The circuits and control involved in the present utility model are all of the prior art, and are not described in detail herein.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a ceramic PTC electric heater with long service life, includes aluminum pipe (1), its characterized in that, be equipped with heating member (2) and be used for centre gripping heating member (2) joint subassembly (3) in aluminum pipe (1), just joint subassembly (3) include copper sheet (31), copper sheet (31) fixed gomphosis is at the inside wall of aluminum pipe (1), just the opposite side fixed mounting of copper sheet (31) has fold type copper sheet (32), the other end fixedly connected with U type joint board (33) of fold type copper sheet (32);

binding terminals (4) for covering the ends of the aluminum pipe (1) are sleeved at the two ends of the aluminum pipe (1), and the binding terminals (4) are electrically connected with the heating body (2);

both sides of the aluminum pipe (1) are embedded with heat dissipation components (5).

2. The long-life ceramic PTC electric heater according to claim 1, wherein two sets of clamping assemblies (3) are provided, and the two sets of clamping assemblies (3) are symmetrically distributed in the aluminum tube (1).

3. The long-life ceramic PTC electric heater according to claim 2, wherein the heating body (2) adopts a PTC ceramic heating sheet, and the PTC ceramic heating sheet is inserted into the aluminum tube (1) and abuts against the inner plate wall of the U-shaped clamping plate (33) in the two sets of clamping assemblies (3).

4. The long-life ceramic PTC electric heater according to claim 1, wherein the heat dissipating assembly (5) comprises a U-shaped frame (51), the U-shaped frame (51) is fixedly embedded in the side wall of the aluminum tube (1), and the heat dissipating fins (52) with multiple equidistant blocks are fixedly embedded in the U-shaped frame (51).

5. A ceramic PTC electric heater with long life according to claim 4, characterized in that the ends of each of the fins (52) are provided with arcuate surfaces (53) to the same direction of deflection.

6. The long-life ceramic PTC electric heater according to claim 1, wherein a plurality of uniformly distributed spherical cavities (1 a) are provided on both upper and lower end surfaces of the aluminum tube (1), and copper balls (6) are installed in each spherical cavity (1 a).

7. A long life ceramic PTC electric heater according to claim 6, characterized in that one third of the sphere of the copper sphere (6) extends out of the spherical cavity (1 a) and one third of the copper sphere (6) extends into the aluminium tube (1).