CN204651111U - A kind of high-power heat-dissipation resistor - Google Patents

Abstract

The utility model discloses a high-power heat dissipation resistor, which comprises a resistance element (1), a heat pipe (5), a heat dissipation plate (4), a support plate (3) and a heat dissipation box (2) connected in sequence; the heat dissipation plate (4) is H-shaped, closely connected with the resistance element (1); the heat dissipation plate (4) is longitudinally embedded in the groove provided on the surface of the support plate (3) and connected with the support plate (3); the support plate ( 3) Horizontally embedded in the groove on the inner surface of the heat dissipation box (2) and connected to the heat dissipation box (2); one end of the heat pipe (5) is connected to the top of the heat dissipation plate (4), and the other end is connected to the heat dissipation box (2) ; The heat dissipation box (2) includes a top plate (21), a side plate (22) and a bottom plate (23), all of which are provided with ventilation holes. The utility model has a reasonable structure and uses an aluminum base plus an insulating layer material as the main body. It is a high-power heat dissipation resistor with high heat dissipation efficiency and can effectively avoid spark discharge.

Description

A high-power cooling resistor

technical field

The utility model relates to a resistor, in particular to a high-power heat dissipation resistor.

Background technique

As a secondary load resistor, the high-power resistor is set in the neutral point grounding device of the generator. Using the energy dissipation function of the resistor, it can protect the generator from damage, and can also suppress the noise and energy consumption caused by DC bias. High adverse effects. However, during the use of high-power resistors, there are often problems such as a large amount of heat generation and spark discharge. Therefore, it is urgent to provide a high-power heat dissipation resistor that can effectively avoid spark discharge and has good heat dissipation performance.

Utility model content

The purpose of the utility model is to provide a high-power heat dissipation resistor, which not only can effectively avoid spark discharge, but also has good heat dissipation performance.

The utility model is realized through the following technical solutions: a high-power heat dissipation resistor, including a resistance element, a heat pipe, and a heat dissipation plate, a support plate, and a heat dissipation box connected in sequence; the heat dissipation plate is H-shaped, and is closely connected with the resistance element; The heat dissipation plate is longitudinally embedded in a groove on the surface of the support plate and connected to the support plate; the support plate is transversely embedded in a groove on the inner surface of the heat dissipation box to connect with the heat dissipation box; one end of the heat pipe is connected to the top of the heat dissipation plate , and the other end is connected with the heat dissipation box; the heat dissipation box includes a top plate, a side plate and a bottom plate, all of which are provided with ventilation holes.

With this structure of resistors, the heat dissipated by the resistive element is mainly transferred in two ways: one is through solid conduction, and the heat is transferred to the outside in the order of heat sink, support plate, and heat sink; the other is through gas convection, The heat dissipates.

Further, the ventilation holes of the top plate are Y-shaped. The ventilation holes are covered to prevent dust from entering.

Further, the vent hole of the side plate is r-shaped, and has an inclination angle α with the horizontal direction, 0°<α<90°; the design of the inclination angle is conducive to the discharge of heat.

Further, the ventilation holes of the bottom plate are inverted V-shaped. The hot air in the resistor dissipates to form a negative pressure. The design of the inverted V-shaped hole allows the outside cold air to quickly enter the resistor from the ventilation hole on the bottom plate, absorb heat and bring it to the outside, expanding the air intake.

Further, the support plate includes an upper support plate and a lower support plate, and ventilation holes are provided on the surface. Ventilation holes arranged on the support plate are beneficial to the circulation of air in the inner cavity of the resistor and the dissipation of heat.

Further, heat dissipation fins are provided on the outer sides of the top plate and side plates of the heat dissipation box; the heat pipes are connected to the heat dissipation fins through through holes provided on the top plate of the heat dissipation box. The heat dissipation fins added on the outside of the heat dissipation box increase the surface area of heat dissipation, which can significantly improve the heat dissipation efficiency, and quickly transfer the heat generated by the resistor to the outside air in the working state.

Further, the heat pipe is a vacuum tube made of copper, filled with pure water, and the inner wall structure adopts a netting type. At the same time, the heat pipe connects the heat dissipation plate and the heat dissipation fins. On the one hand, the heat pipe itself has the effect of cooling down, and on the other hand, it also helps to increase the temperature difference between the inside and outside, thereby speeding up the heat dissipation process.

Further, the materials of the heat dissipation plate, the heat dissipation box and the support plate are all aluminum substrates and an insulating layer is provided on the surface. Aluminum itself has excellent thermal conductivity. The surface of the processed aluminum substrate is anodized to increase the corrosion resistance and wear resistance of the aluminum material, and the insulating layer on the surface can effectively avoid spark discharge.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) The structure of the utility model is simple, the heat is diverged through two transmission modes of conduction and convection, passive heat dissipation and active heat dissipation are carried out simultaneously, and the heat dissipation efficiency is high;

(2) The utility model adds a heat pipe, and the heat dissipation plate, the heat pipe, and the heat dissipation fins of the heat dissipation box are sequentially connected to expand the heat dissipation surface area and improve the passive heat dissipation efficiency;

(3) The heat dissipation plate, support plate, and heat dissipation box in the utility model are made of aluminum base and insulating layer, which not only ensures good thermal conductivity, but also avoids spark discharge;

(4) The utility model has a simple structure and is easy to maintain.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a front sectional view of Embodiment 1 of the present utility model.

Fig. 3 is a front view of Embodiment 2 of the present utility model.

Among them: 1—resistive element, 2—cooling box, 21—top plate, 22—side plate, 23—bottom plate, 24—radiating fins, 3—supporting plate, 31—upper supporting plate, 32—lower supporting plate, 4 —radiating plate, 5—heat pipe.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example 1:

The high-power heat dissipation resistor of this embodiment includes a resistance element 1, a heat pipe 5, and a heat dissipation plate 4, a support plate 3, and a heat dissipation box 2 connected in sequence; the heat dissipation plate 4 is H-shaped, and is closely connected with the resistance element 1; The radiator plate 4 is embedded longitudinally in the groove on the surface of the support plate 3 and is connected to the support plate 3; It is connected with the top of the heat dissipation plate 4, and the other end is connected with the heat dissipation box 2; the heat dissipation box 2 includes a top plate 21, a side plate 22 and a bottom plate 23 and are all provided with ventilation holes; the ventilation holes of the top plate 21 are Y-shaped; The ventilation holes of the side plate 22 are r-shaped, and have an inclination angle α with the horizontal direction, 0°<α<90°; the ventilation holes of the bottom plate 23 are inverted V-shaped.

In the working state of the resistor, the resistance element 1 generates huge heat. With the resistor of this structure, the heat dissipated by the resistive element 1 is mainly transmitted in two ways: conduction and convection. On the one hand, due to the close connection between the heat dissipation plate 4 and the resistance element 1, the heat is transferred to the surface of the heat dissipation box 2 in the order of the resistance element 1, the heat dissipation plate 4, the support plate 3, and the heat dissipation box 2, and then to the outside air; The heat pipe 5 directly connects the heat dissipation plate 4 with the heat dissipation box 2. While cooling itself, a temperature difference is generated, and the heat is quickly transferred from the inside of the resistor to the surface, and the heat is quickly dissipated; The ventilation holes of the top plate 21 or the side plate 22 take out the absorbed heat in the casing.

Example 2:

In this embodiment, on the basis of Embodiment 1, heat dissipation fins 24 are further added. The outer sides of the top plate 21 and the outer sides of the side plates 22 of the heat dissipation box are provided with heat dissipation fins 24, and the heat pipes 5 pass through the passageways arranged on the top plate 21 of the heat dissipation box 2. The holes are connected with the cooling fins 24 . The heat generated by the resistance element 1 is directly transferred to the heat dissipation fins 24 outside the heat dissipation box 2 through the heat dissipation plate 4 and the heat pipe 5, thereby increasing the heat dissipation surface area. Other parts of this embodiment are the same as those of Embodiment 1, and will not be repeated here.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model.

Claims (8)

1. a high-power heat-dissipation resistor, is characterized in that: comprise resistive element (1), heat pipe (5) and the heating panel be connected successively (4), supporting bracket (3), heat dissipation tank (2); Described heating panel (4) is H type, with resistive element (1) compact siro spinning technology; Described heating panel (4) longitudinally embeds in the groove being arranged on supporting bracket (3) surface and is connected with supporting bracket (3); Described supporting bracket (3) laterally embeds to be arranged in the groove of heat dissipation tank (2) inner surface and is connected with heat dissipation tank (2); Described heat pipe (5) one end is connected with heating panel (4) top, and the other end is connected with heat dissipation tank (2); Described heat dissipation tank (2) comprises top board (21), side plate (22) and base plate (23), and is provided with ventilation hole.

2. high-power heat-dissipation resistor according to claim 1, is characterized in that: the ventilation hole of described top board (21) is Y type.

3. high-power heat-dissipation resistor according to claim 1, is characterized in that: the ventilation hole of described side plate (22) is r type, and is inclination alpha with horizontal direction, 0 ° of < α <90 °.

4. high-power heat-dissipation resistor according to claim 1, is characterized in that: the ventilation hole of described base plate (23) is reverse V-shaped.

5. high-power heat-dissipation resistor according to claim 1, is characterized in that: described supporting bracket (3) comprises upper backup pad (31), lower supporting plate (32), and surface all arranges ventilation hole.

6. high-power heat-dissipation resistor according to claim 1, is characterized in that: all arrange radiating fin (24) outside the top board of described heat dissipation tank (2), outside side plate; Described heat pipe (5) is connected with radiating fin (24) by the ventilation hole being arranged on heat dissipation tank (2) top board.

7. the high-power heat-dissipation resistor according to claim 1 or 6, is characterized in that: described heat pipe (5) is copper vacuum tube, fills pure water in pipe, and interior wall construction adopts formula of knotting.

8. the high-power heat-dissipation resistor according to claim 1-6 any one, is characterized in that: the material of described heat dissipation tank (2), supporting bracket (3), heating panel (4) is aluminium base and surface arranges insulating barrier.