CN212230173U - A metal film resistor with built-in heat dissipation structure - Google Patents

Abstract

The utility model discloses a metal film resistor with a built-in heat dissipation structure, which comprises a protection box, wherein a fixed box is fixedly arranged at one side outside the protection box, the upper wall surface of the protection box is provided with a ventilation hole, the lower wall surface of the device is provided with two pairs of air inlet holes with the same structure, and the heat dissipation structures are arranged in the protection box and the fixed box, the utility model relates to the technical field of resistors, the device has reasonable structure, low cost and convenient use, the heat dissipation structure utilizes air cooling and water cooling to dissipate heat of the resistor body at the same time, the heat dissipation effect is good, and the temperature of the air blown out from the fan is lower after the air is cooled, the heat generated by the resistor body can be effectively taken away, compared with the wind which is not cooled, the heat dissipation effect is more obvious, and the arrangement of the filter screen effectively prevents the external dust from entering the protection box to influence the resistor body.

Description

A metal film resistor with built-in heat dissipation structure

technical field

The utility model relates to the technical field of resistors, in particular to a metal film resistor with a built-in heat dissipation structure.

Background technique

Metal film resistors are widely used resistors so far, with high precision, stable performance, and simple and lightweight structure. It plays a role that cannot be ignored in the fields of electronics industry and military aerospace under the requirements of high precision.

Existing metal film resistors will generate a lot of heat during use. If the heat dissipation treatment is not carried out in time, the service life of the metal film resistors will be affected. The existing metal film resistors generally use small fans. Heat dissipation, the small fan can only dissipate heat from the resistor by blowing natural wind, and the heat dissipation effect is poor. At the same time, although the heat generated by the resistor is blown away, the heat still accumulates around the resistor in a short period of time, making the resistance of the resistor. The cooling rate is also not ideal. In view of this, in-depth research on the above problems has led to the emergence of this case.

Utility model content

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: a metal film resistor with a built-in heat dissipation structure, comprising a protection box, a fixed box is fixedly installed on the outer side of the protection box, and an upper wall surface of the protection box is provided with a There are ventilation holes, and two pairs of air inlet holes with the same structure are opened on the lower wall surface, and a heat dissipation structure is installed in the protection box and the fixed box.

The heat dissipation structure includes: a fixed plate, a resistor body, a water tank, a cooling plate assembly, a fixed seat, a water pump, a water suction pipe, an air duct, a pair of fans with the same structure, and a circulation pipe.

The fixing plate is fixedly embedded in the protective box, and has a number of heat dissipation holes with the same structure, the resistor body is fixedly arranged on the wall surface of the fixing plate, the water tank is fixedly arranged in the fixing box, and the cooling plate One side of the component is fixedly placed on one side of the water tank, and its heat dissipation end is located outside the fixed box, the fixed seat is fixedly placed in the fixed box, and is located on one side of the water tank, the water pump is fixedly placed on the upper wall of the fixed seat, the One end of the water suction pipe is fixedly embedded in the water pump outlet, and the other end is fixedly embedded in the water tank. One end of the circulation pipe is fixedly embedded in the water pump drainage port, and the other end is fixedly penetrated through the protection box and one side of the air duct, and is fixedly connected with one side of the water tank, and the circulation pipe is located directly above the pair of fans.

Preferably, the protection box and the outer lower wall surface of the fixed box are fixedly installed with foot assemblies.

Preferably, a filter screen assembly is fixedly embedded in the ventilation hole and the two pairs of the air inlet holes.

Preferably, a pair of baffles with the same structure are fixedly mounted on the wall of the fixing plate.

Preferably, a pair of the baffles are in a "V"-shaped structure.

beneficial effect

Compared with the prior art, the beneficial effects of the present utility model are: the device has a reasonable structure, low cost, and is easy to use; After the wind is cooled and cooled, the temperature of the blown air is low, which can effectively take away the heat generated by the resistor body. Compared with the wind without cooling, the heat dissipation effect is more significant. The setting of the filter screen effectively prevents the entry of external dust. The protective box thus affects the resistor body.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the utility model.

FIG. 2 is a schematic top view sectional view of the air duct of the present invention.

3 is a schematic top view of the structure of the air duct of the present invention.

In the figure: 1. Protection box; 2. Fixed box; 3. Fixed plate; 4. Resistor body; 5. Water tank; 6. Refrigeration chip assembly; 7. Fixed seat; 8. Water pump; Air duct; 11, fan; 12, circulation pipe; 13, foot assembly; 14, filter screen assembly; 15, deflector.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, the present utility model provides a technical solution: a metal film resistor with a built-in heat dissipation structure, comprising a protection box 1, a fixing box 2 is fixedly installed on the outer side of the protection box 1, and the upper wall surface of the protection box 1 Ventilation holes are opened, and two pairs of air inlet holes with the same structure are opened on the lower wall surface. A heat dissipation structure is installed in the protection box 1 and the fixed box 2; the heat dissipation structure includes: a fixed plate 3, a resistor body 4, a water tank 5, Refrigeration sheet assembly 6, fixing base 7, water pump 8, water suction pipe 9, air duct 10, a pair of fans 11 and circulation pipes 12 with the same structure; the fixing plate 3 is fixedly embedded in the protection box 1, and is provided with several structures The same heat dissipation holes, the resistor body 4 is fixedly placed on the upper wall of the fixed plate 3, the water tank 5 is fixedly placed in the fixed box 2, one side of the refrigeration sheet assembly 6 is fixedly placed on one side of the water tank 5, and its heat dissipation end is located in the fixed box 2. In addition, the fixed seat 7 is fixedly placed in the fixed box 2, and it is located on the side of the water tank 5, the water pump 8 is fixedly placed on the upper wall of the fixed seat 7, one end of the water pumping pipe 9 is fixedly embedded in the water inlet of the water pump 8, and the other end is fixed. Embedded in the water tank 5, the air duct 10 is fixed on the inner lower wall of the protection box 1, a pair of fans 11 is fixed on the inner lower wall of the air duct 10, one end of the circulation pipe 12 is fixedly embedded in the water outlet of the water pump 8, and the other One end is fixedly penetrated through the protection box 1 and one side of the air duct 10 , and is fixedly connected to one side of the water tank 5 , and the circulation pipe 12 is located directly above the pair of fans 11 .

As a preferred solution, further, a foot assembly 13 is fixedly installed on the outer lower walls of the protection box 1 and the fixing box 2 : the foot assembly 13 is used to support the protection box 1 and the fixing box 2 .

As a preferred solution, further, a filter screen assembly 14 is fixedly embedded in the ventilation hole and the two pairs of air inlet holes: the filter screen assembly 14 is used to filter external dust.

As a preferred solution, further, a pair of guide plates 15 with the same structure are fixedly installed on the upper wall of the fixing plate 3: the guide plates 15 are used to guide the heat dissipation air, so that it can be fully connected with the resistor body 4. make contact.

As a preferred solution, further, a pair of baffles 15 is in a "V"-shaped structure.

All the electrical components in this case are connected with the power supply to which they are adapted through wires by those skilled in the art, and an appropriate controller should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principles Among them, the electrical connection between the electrical components is completed in sequence, and the detailed connection means are known in the art. The following mainly introduces the working principle and process, and does not describe the electrical control.

Example: According to the accompanying drawings 1-2, when the resistor body 4 generates heat, the cooling chip assembly 6 is turned on, and the cooling chip assembly 6 will refrigerate the water in the water tank 5, and the cold water after cooling will enter through the water pump 8. Into the circulation pipe 12, the fan 11 will draw the outside air into the protection box 1 through the air inlet hole, and will blow to the resistor body 4 after being cooled by the circulation pipe 12, to dissipate heat to the resistor body 4 and guide it. The flow plate 15 will make the cooled air sufficiently contact with both sides of the resistor body 4 to dissipate heat, and the cooled air after dissipating heat will be exhausted through the exhaust holes.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. A metal film resistor with a built-in heat dissipation structure, comprising a protection box (1), characterized in that a fixing box (2) is fixedly installed on the outer side of the protection box (1), and the protection box (1) The upper wall surface is provided with ventilation holes, and the lower wall surface is provided with two pairs of air inlet holes with the same structure, and a heat dissipation structure is installed in the protection box (1) and the fixing box (2); The heat dissipation structure includes: a fixing plate (3), a resistor body (4), a water tank (5), a cooling sheet assembly (6), a fixing seat (7), a water pump (8), a water pumping pipe (9), a fan a cylinder (10), a pair of fans (11) with the same structure and a circulation pipe (12); The fixing plate (3) is fixedly embedded in the protection box (1), and is provided with a number of heat dissipation holes with the same structure, the resistor body (4) is fixedly arranged on the upper wall surface of the fixing plate (3), and the The water tank (5) is fixedly arranged in the fixed box (2), one side of the cooling fin assembly (6) is fixedly arranged on one side of the water tank (5), and the heat dissipation end thereof is located outside the fixed box (2). (7) is fixedly installed in the fixed box (2), and is located on one side of the water tank (5), the water pump (8) is fixedly installed on the upper wall of the fixed seat (7), and one end of the water pumping pipe (9) is fixedly embedded It is installed in the water inlet of the water pump (8), and the other end is fixedly embedded in the water tank (5). It is fixedly arranged on the inner lower wall of the air duct (10), one end of the circulation pipe (12) is fixedly embedded in the water outlet of the water pump (8), and the other end of the circulating pipe (12) is fixedly penetrated through the protection box (1) and one end of the air duct (10). side, and is fixedly connected to one side of the water tank (5), and the circulation pipe (12) is located directly above the pair of fans (11). 2 . The metal film resistor with built-in heat dissipation structure according to claim 1 , wherein a foot assembly ( 13 ) is fixedly installed on the outer lower wall of the protection box ( 1 ) and the fixing box ( 2 ). 3 . 3 . The metal film resistor with built-in heat dissipation structure according to claim 1 , wherein a filter screen assembly ( 14 ) is fixedly embedded in the ventilation hole and the two pairs of the air inlet holes. 4 . 4 . The metal film resistor with built-in heat dissipation structure according to claim 1 , wherein a pair of guide plates ( 15 ) with the same structure are fixedly mounted on the upper wall of the fixing plate ( 3 ). 5 . 5. The metal film resistor with built-in heat dissipation structure according to claim 4, characterized in that, a pair of the guide plates (15) is a "V"-shaped structure.

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