CN213040624U

CN213040624U - Integrated PTC heater radiating fin structure

Info

Publication number: CN213040624U
Application number: CN202021159492.6U
Authority: CN
Inventors: 任安然
Original assignee: Anhui Hengshan Electronic Technology Co ltd
Current assignee: Anhui Hengshan Electronic Technology Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2021-04-23
Anticipated expiration: 2030-06-19

Abstract

The utility model relates to an integration PTC heater fin structure, including PTC heating element, cooling tube be provided with the several fin on the surface about the cooling tube, the fin with the cooling tube is the integral structure, the fin is shovel formula tooth piece structure, the fin includes segmental arc and plane section, just the fin with the cooling tube forms a contained angle, the cooling tube left and right sides is evagination type structure. Compared with the prior art, the utility model adopts an open radiating fin structure with a certain inclination angle under the condition of the same wind speed, so that the radiating area of the radiating fin is increased, the radiating wind resistance is smaller, the heat conversion efficiency is high, and the integral radiating effect is further improved; the radiating tube both sides adopt the evagination formula structure, improve the overall structure intensity of radiating tube, not fragile fin structure when the assembly guarantees radiating effect's homogeneity.

Description

Integrated PTC heater radiating fin structure

Technical Field

The utility model relates to a PTC heating field, concretely relates to integration PTC heater fin structure.

Background

Compared with traditional electric heating wires, electric heating tubes and far infrared quartz heaters, the PTC heater has the advantages of automatic temperature control, wide application voltage range, no open fire, safety, reliability, long service life and the like. Based on the above advantages, PTC heaters are increasingly widely used in heating devices in the field of home appliances, such as air-conditioning auxiliary heating, warm air blowers, and bath heaters. The radiating fins of the existing PTC heater in the market are fixed on the pipe wall of the PTC heater in a bonding mode, so that large radiating thermal resistance exists, the heat transfer efficiency is seriously influenced, and the further improvement of the power of the PTC heater is restricted.

The PTC relieving type heater is characterized in that fin-shaped teeth are firstly relieved on the upper surface and the lower surface of an aluminum profile, the PTC element and an electrode plate used for electric conduction are wrapped by insulating paper and then are plugged into a through hole of a special relieving type radiator (also called a relieving type radiator), and then protruding parts on two sides of the through hole are compressed, so that the PTC element and the electrode plate are tightly attached to the radiator, and the effect of sufficient heat dissipation can be achieved. However, the existing shovel-tooth-shaped PTC heater has a great disadvantage that the protruding parts at two sides of the through hole of the radiator are required to be pressed, so that the pipe walls at two sides of the radiator are concave inwards, if the hardness of the aluminum profile is too high, the root parts of the fin-shaped teeth are broken under the action of pressure, the strength of the heater is reduced, and the uniformity of the power of the heater is influenced; if the aluminium alloy hardness is on the low side, the used spiller's of forming relieved tooth power can make the through-hole warp easily when the aluminium alloy forming relieved tooth to influence the assembly of PTC piece.

In addition, the existing shovel-tooth type PTC heater is not fully designed, and although parameters such as the shape of the teeth, the space between the teeth, the thickness of the teeth, etc. are specified, the parameters are too wide to be practical, and the design of the sizes must be compatible with increasing the heat dissipation area to increase the power and reducing the wind resistance as much as possible.

SUMMERY OF THE UTILITY MODEL

To the problem in the above-mentioned technical background, the utility model aims to provide an integration PTC heater fin structure, the cooling tube both sides adopt the evagination formula structure, adopt the open fin structure that has inclination simultaneously, improve heat conversion efficiency.

In order to realize the above purpose, the utility model discloses a technical scheme be:

the utility model provides an integration PTC heater fin structure, includes PTC heating element, cooling tube be provided with the several fin on the surface about the cooling tube, the fin with the cooling tube is integral structure, the fin is shovel formula tooth piece structure, the fin includes segmental arc and plane section, just the fin with the cooling tube forms an contained angle, the cooling tube left and right sides is evagination type structure.

Further, the gap between adjacent radiating fins is 1.0-2.0 mm.

Further, the radiating fins are connected with the radiating pipe through the arc-shaped sections, and an included angle of 75-85 degrees is formed between the arc-shaped sections and the surface of the radiating pipe.

Furthermore, the plane section is perpendicular to the surface of the radiating pipe.

Further, the thickness of the radiating fin is 0.2mm-0.6 mm.

The technical effects of the utility model reside in that:

1. the utility model is an integral radiator, and the production process is simple;

2. compared with the prior art, the utility model adopts an open radiating fin structure with a certain inclination angle under the condition of the same wind speed, so that the radiating area of the radiating fin is increased, the radiating wind resistance is smaller, the heat conversion efficiency is high, and the integral radiating effect is further improved;

3. the radiating tube both sides adopt the evagination formula structure, improve the overall structure intensity of radiating tube, not fragile fin structure when the assembly guarantees radiating effect's homogeneity.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of the integrated PTC heater fin structure of the present invention;

FIG. 2 is a schematic view of a partial structure of the integrated PTC heater cooling fin structure of the present invention;

fig. 3 is a schematic view of the integrated PTC heater heat sink structure of the present invention.

Reference numerals: 1-a PTC heating element; 2-radiating pipes; 3-a heat sink; 301-arc segment; 302-plane section.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Referring to the accompanying drawings 1-2, the utility model discloses an integration PTC heater fin structure, including PTC heating element 1, cooling tube 2 be provided with several fin 3 on the surface about cooling tube 2, fin 3 with cooling tube 2 is the integral structure, fin 3 is shovel formula tooth piece structure, fin 3 includes segmental arc 301 and plane section 302, just fin 3 with cooling tube 2 forms a contained angle, the 3 left and right sides of cooling tube are evagination type structure.

The PTC heating assembly 1 includes an electrifying electrode strip and insulating paper (polyimide film).

The utility model discloses well fin 3 and 2 integrated into one piece of cooling tube realize the biggest best heat radiating area of whole radiator, and the heat that PTC heating element 1 sent is inside to be conducted cooling tube 2 and fin 3 from cooling tube 2 through-holes, and the heat dissipation windage is little, and heat-conduction effect is good.

Compared with the prior art, the utility model adopts the structure of the radiating fins 3 with an inclined angle on one surface under the condition of the same wind speed, so that the radiating wind resistance is smaller and the heat conversion efficiency is high while the radiating area of the radiating fins 3 is increased, thereby improving the overall radiating effect; the 2 both sides of cooling tube adopt the evagination formula structure, improve the overall structure intensity of cooling tube, not fragile fin structure when the assembly guarantees radiating effect's homogeneity.

In one embodiment of the present invention, the gap between adjacent cooling fins 3 is 1.0-2.0 mm.

In this embodiment, the distance between the radiating fins 3 is reasonably set, and the density of the radiating fins is set, so that the optimal radiating area is ensured, the radiating wind resistance is reduced to the greatest extent, and the radiating effect is ensured.

In another embodiment of the present invention, the heat sink 3 is connected to the heat dissipating pipe 2 through the arc-shaped section 301, and an included angle of 75-85 degrees is formed between the arc-shaped section 301 and the surface of the heat dissipating pipe 2.

Wherein, the plane section 302 is perpendicular to the surface of the heat dissipation pipe 2.

By adjusting the inclination angle of the open type radiating fins, the radiating wind resistance is reduced to the greatest extent while the radiating area is ensured to be unchanged, the radiating speed is increased, and the radiating effect is improved.

Further, the thickness of the radiating fin 3 is 0.2mm-0.6 mm.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an integration PTC heater fin structure, includes PTC heating element, cooling tube be provided with the several fin on the surface about the cooling tube, the fin with the cooling tube is integral structure, its characterized in that, the fin is shovel formula tooth piece structure, the fin includes segmental arc and plane section, just the fin with the cooling tube forms an contained angle, the cooling tube left and right sides is evagination type structure.

2. An integral PTC heater fin structure according to claim 1, wherein the gap between adjacent fins is 1.0-2.0 mm.

3. The fin structure of an integrated PTC heater according to claim 1, wherein the fin is connected to the radiating pipe through the arc-shaped section, and the arc-shaped section forms an angle of 75-85 degrees with the surface of the radiating pipe.

4. A unitary PTC heater heat sink structure according to claim 3, wherein said planar sections are disposed perpendicular to the surface of said heat pipe.

5. An integral PTC heater fin structure according to claim 1, wherein the fin thickness is in the range of 0.2mm to 0.6 mm.