CN201259889Y

CN201259889Y - Heat radiator used for electric electronic thyristor

Info

Publication number: CN201259889Y
Application number: CNU2008201094735U
Authority: CN
Inventors: 黄志宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-28
Filing date: 2008-07-28
Publication date: 2009-06-17
Anticipated expiration: 2018-07-28

Abstract

The utility model relates to a radiator used in a power electronic thyristor, comprising a plurality of copper panels and at least one heat-conducting copper column; wherein, each copper panel corresponding to the number of the heat-conducting copper column is provided with a penetrating hole; the heat-conducting copper column is arranged in the penetrating hole in a penetrating way; the copper panels are connected in series; one end surface of the heat-conducting copper column is protruded out of the copper panels for carrying out heat contact with a heat radiating surface of the thyristor; the copper panels are welded with the heat-conducting copper column, and a heat-conducting copper column for air flow passing through is arranged between every two adjacent copper panels. A plurality of the copper panels are used for replacing blocky copper heat-radiating panels in the prior art, the heat-radiating area of the utility model is much larger than that of the prior art; on the premise that the same heat-radiating effect is achieved, the copper material can be saved, thus reducing production cost and saving social resource.

Description

Power electronics thyristor radiator

Technical field

The utility model relates to a kind of radiator, particularly a kind of radiator for the thyristor use.

Background technology

Thyristor (Thyristor) is the abbreviation of thyratron transistor, can be called silicon controlled rectifier again, is called controllable silicon in the past for short.Thyristor has the characteristic of silicon rectification device, can work under high voltage, big current condition, and its course of work can control, and is widely used in the electronic circuits such as controlled rectification, AC voltage adjusting, contactless electronic beam switch, inversion and frequency conversion.And general small power thysistor does not need radiation fin, for high-power thyristor, then must install heat abstractor additional, and the temperature during with the assurance pipe work is no more than rated temperature.

The present thyristor radiator that uses, as shown in Figure 1 and Figure 2, usually paste respectively on upper and lower two heat-delivery surfaces of thyristor 12 and touch one and be block copper heating panel 11, the heat that thyristor 12 produces conducts to copper heating panel 11, by copper heating panel 11 heat is distributed again.

Yet, find that in use also there are the following problems for prior art.

1, the thickness of copper heating panel 11 generally can reach 20 millimeters, and monoblock adopts copper product to make, and along with the rise of copper product price, the manufacturing cost height must be difficult to accept.

2, the surface area of copper heating panel 11 is limited, so area of dissipation is limited, only mainly takes conduction and radiation and convection simultaneously, and radiating efficiency is low.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model is: a kind of power electronics thyristor radiator is provided, to reduce the use of copper product, reduces manufacturing cost.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of power electronics thyristor radiator is characterized in that: comprise a plurality of copper panels and at least one heat conduction copper post, wherein:

Each described copper panel is provided with a perforation corresponding to the quantity of heat conduction copper post;

Described heat conduction copper post is located in the described perforation, and described copper panel is chained together, and an end face of described heat conduction copper post is stretched on outside the copper panel, is used for carrying out thermo-contact with the radiating surface of thyristor; Described copper panel all adopts the mode of welding to be connected with described heat conduction copper post, but and has the spacing distance that an air feed stream passes through between per two adjacent copper panels.

In the preferable technical scheme: the number of described copper panel is more than three or three.

In the preferable technical scheme: the number of described heat conduction copper post is two.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be:

1. the utility model is compared with existing radiator owing to taked the thin copper heating panel of multi-disc as fin, has increased area of dissipation, has improved radiating efficiency.

2. owing to be provided with spacing distance between the copper panel, thereby copper heating panel is heated because of conduction its ambient air temperature is raise, and the radiator air outside can be because temperature be lower with copper heating panel near form convection current than hot gas, form the many places convection current around a plurality of copper panels, radiating efficiency is far above an independent copper heating panel.

3. owing to adopt a plurality of thin copper heating panels, compare with original thick copper heating panel as fin, the raw material of use still less, cost is lower.

Description of drawings

Fig. 1 is the occupation mode schematic diagram of existing thyristor radiator;

Fig. 2 is the plane graph of the copper heating panel of existing thyristor radiator;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is the plane graph of copper panel of the present utility model.

The copper heating panel of description of reference numerals: 11-; The 12-thyristor; The copper panel of 21-; The 22-perforation; 23-heat conduction copper post; The 231-end face; The 24-spacing distance.

Embodiment

For shape of the present utility model, structure and characteristics can be understood better, below will and be elaborated to the utility model in conjunction with the accompanying drawings by preferred embodiment.In order to make structure of the present utility model more clear, described accompanying drawing might change actual proportionate relationship in drawing process, and this is not appreciated that the qualification to present patent application.

With reference to Fig. 3, Fig. 4, be the structural representation of a preferred embodiment of the utility model, wherein, described power electronics thyristor comprises a plurality of copper panels 21 and two heat conduction copper posts 23 with radiator, wherein:

The number of described copper panel 21 can be two, and being advisable more than three or three, and the opposite position place on each copper panel 21 is provided with two perforation 22;

Described heat conduction copper post 23 is located in the described perforation 22, and described copper panel 21 is chained together, and an end face 231 of described heat conduction copper post 23 is stretched on outside the copper panel 21, is used for carrying out thermo-contact with the radiating surface of thyristor; In the present embodiment, described copper panel 21 all adopts the mode of welding to be connected with described heat conduction copper post 23, and between per two adjacent copper panels 21, have a spacing distance 24, but described hole 24 air feed streams pass through, to increase the area of heat loss through convection.

Among the above embodiment, be to be that example illustrates structure of the present utility model with two heat conduction copper posts 23, and in fact, the number of heat conduction copper post 23 can be according to the number of thyristor 12 and position and is decided, change to one, more than three or three, simultaneously, the quantity of the perforation 22 that is provided with on the copper panel 21 also is to change in company with the number of heating column.

As shown in Figure 3, the utility model when in use, be respectively to establish a described radiator thyristor 12 upper and lower, the end face 231 of two heating columns 23 of each radiator contacts with a radiating surface of a thyristor 12 respectively, thereby the heat that thyristor 12 sends is constantly conducted to copper panel 21, under the thermal radiation and cross-ventilation effect by copper panel 21, heat is distributed again.

As seen, adopt structure of the present utility model, can bring following technique effect:

1. because adopt a plurality of copper panels 21 to substitute copper radiation panel 11, and the upper and lower surface of a plurality of copper panels 21 all forms heat-delivery surface, so its surface area is far longer than the single copper heating panel 11 of prior art, after cooling surface area increases, no matter be all corresponding raising of efficient of radiation or convection effects heat radiation, so radiating effect is better than prior art.

2. because adopt a plurality of copper panels 21 to substitute copper radiation panel 11,, can save copper product, thereby reduce production costs, save social resources reaching under the prerequisite of same radiating effect.

More than explanation is just illustrative for the utility model; and nonrestrictive, those of ordinary skills understand, under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence, but all will fall within the protection range of the present utility model.

Claims

1, a kind of power electronics thyristor radiator is characterized in that: comprise a plurality of copper panels and at least one heat conduction copper post, wherein:

2, power electronics thyristor radiator according to claim 1, it is characterized in that: the number of described copper panel is more than three or three.

3, power electronics thyristor radiator according to claim 1, it is characterized in that: the number of described heat conduction copper post is two.