JP2636320B2 - Radiator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a radiator in a dehumidifying device, a cooling device, or the like using an electronic cooling element.

[Conventional technology]

Conventionally, in equipment such as closed switchboards and various control devices, prevention of dew condensation or high temperature inside the equipment box has been attempted to ensure high reliability of internal equipment.In this case, electronic equipment utilizing the Peltier effect is used. It is common practice to configure a dehumidifying device or a cooling device using a cooling element.

For example, FIGS. 4 and 5 show a conventional cooling device using an electronic cooling element. The electronic cooling element is provided in a through hole formed in an outer wall of a box body (1) through a heat insulating material (2). (3) is arranged, and a radiator fin (4) having a radiator in contact with the heat generating surface of the element (3) is attached to the outside of the box body (1), and a fan for forcibly air cooling the radiator fin (4) (5) is provided, on the other hand, a heat absorbing fin (6) is attached to the inside of the box (1) in contact with the heat absorbing surface of the element (3), and the fin (6) is attached to the inside of the box (1). A fan (7) for blowing air is provided.

When the electronic cooling element (3) is driven, the temperature of the heat radiation fin (4) rises due to the temperature rise of the heat generating surface, and the temperature of the heat absorbing fin (6) falls due to the temperature decrease of the heat absorbing surface. ), The outside air is blown to the radiating fin (4), whereby the radiating fin (4) is forcibly air-cooled, while the air in the box (1) is cooled by the fan (7).
When the air is blown onto the heat absorbing fin (6) by the driving of the box (1), the air temperature in the box (1) gradually decreases. Water condenses on the fins (6) and is removed from the air.

[Problems to be solved by the invention]

However, in the prior art, the radiating fin (4) and the fan (5) led out of the box (1) are exposed, so that the high-temperature radiating fin (4) and the rotating fan (4) are exposed. There is a problem in safety against (5), and there is no protection of the fin (4) itself.

Here, in the prior art, the above-mentioned problem can be solved by covering the heat radiating fin (4) and the fan (5) with a cover (8) such as a wire mesh, as shown by the one-dot chain line in FIG. However, in this case, since the cover (8) as a separate part is required, the cost is increased, and further, there is a disadvantage that the entire radiator is increased in size.

The present invention has been made in consideration of such problems of the prior art, and the purpose thereof is to:
An object of the present invention is to provide a radiator capable of integrally having an external case function.

[Means for solving the problem]

The configuration of the present invention for achieving the above object will be described with reference to FIG. 1 corresponding to the embodiment.

A radiator according to the present invention comprises a substrate (13) having a bonding surface to a heating surface of an electronic cooling element (22);
A heat guide (14) projecting from the central portion of (3) in a direction orthogonal to the substrate (13), and a plurality of fins provided on both sides of the heat guide (14) are arranged in parallel in the orthogonal direction. A fin portion (15) provided, and a decorative plate portion (16) provided at the end of the heat guide (14) in parallel with the substrate portion (13).
And a side plate (17) for covering the outside of both fins (15) between both ends of the base plate (13) and both ends of the decorative plate (16). It is characterized by being press-fitted.

[Action]

When the temperature of the heat generating surface rises due to the driving of the electronic cooling element (22), the substrate (13) joined thereto absorbs the heat of the heat generating surface and passes through the substrate (13) and the heat guide (14). Then, heat is transferred to both fins (15) and radiated from the surface of each fin of the fin (15).

At this time, if air is blown from below the radiator, heat radiation is promoted.

In addition, this heat dissipation base is composed of a board part (13), a decorative board part (16)
The fin portion (17) is covered by the side plates (17) and also serves as an external case.

〔Example〕

Next, an embodiment of the present invention will be described with reference to FIGS.

In these drawings, (9) is a box body of a closed switchboard, various control devices, and the like, and a rectangular through hole (10) for mounting a dehumidifying cooling device is formed on an outer wall.

(11) is a vertically long radiator screwed through an annular packing (12) having heat insulation and water cutoff effects on the outer surface of the periphery of the through hole (10). A board portion (13) having a mounting surface and having a through hole (10) closed from the outside, a heat guide (14) protruding rearward from the center of the board portion (13), and a heat guide portion (14). ), Which are provided on both sides of the fin (15), each of which has a plurality of fins arranged side by side in the front-rear direction, and a makeup provided parallel to the substrate (13) at the rear end of the heat guide (14). The plate (16) and the plate (16) are integrally formed by casting, and the outside of the fin (15) is interposed between the grooves on both rear surfaces of the substrate (13) and the grooves on both front surfaces of the decorative plate (16). Each of the side plates (17) is press-fitted, and the side plates (17) are arranged directly below the radiator (11). Cover (18) and are integrally formed.

As shown in FIG. 2, the radiator (11) has a vertical surface formed by casting and drawing on the rear surface of the substrate (13), the surface of each fin of the fin (15), and the front surface of the decorative plate (16). A large number of fine grooves in the direction are formed, and the heat radiation surface area is increased, thereby significantly improving the heat radiation ability.

(19) is a radiating fan consisting of an axial flow fan screwed directly below the radiator (11) and housed in the fan cover (18), and circulates air outside the box (9) to the radiator (11). Air is blown into the space in the fin section (15) from below, and the radiator (1
1) Force air cooling. (20) is Juan Guard.

(21) is the front of the radiator (11), that is, the substrate (13)
Is a heat insulating sheet attached to the mounting surface of (1) and covers the surface facing the through hole (10), and has two square holes for the electronic cooling element. Numerals (22) are two electronic cooling elements utilizing the Peltier effect, which are fitted into both square holes of the heat insulating sheet (21), respectively, and join the heat generating surface to the front surface of the substrate (13).

(23) is an endothermic fin located in the box (21) and having a number of vertical fins arranged side by side. The substrate part (13) and the endothermic fin (23) have two elements (22). ) Is screwed to the substrate portion (13) so that the heat absorbing fin (23) is in contact with the heat absorbing surface of the element (22).

A resin cover (24) is screwed to the front surface of the substrate (13) through the through hole (10) and covers the heat absorbing fin (23). The resin cover has an opening at the rear surface and an intake hole ( twenty five)
However, exhaust holes (26) are formed on the lower left and right side surfaces, respectively. At a position immediately above the heat absorbing fin (23) in the cover (24), a narrowing portion (27) for narrowing the front side to the rear to concentrate and guide the air from the heat absorbing fan (described later) to the heat absorbing fin (23) is formed. ing.

(28) is an intake fan consisting of an axial fan, which is located at the upper part of the cover (24) and is fixed to the front surface of the substrate (13) via the heat insulating sheet (21) by the L-shaped mounting plate (29). There is an air hole (25) that covers the air inside the box (9) (2
4) Intake air and blow it to the lower heat absorbing fin (23).

(30) is a mountain-shaped inclined guide plate provided below the heat absorbing fin (23) in the cover (24), and the heat absorbing fin (23)
The air that has passed through is diverged to the left and right, and exhaust holes (26)
To guide. Between the left and right ends of the guide plate (30) and the left and right inner surfaces of the cover (24), a slight gap is formed to guide dew condensation and dripping dehumidified water to the bottom surface of the cover (24). .

The bottom surface of the cover (24) is a slope (31) descending to the right, and the slope (3) on the right side wall of the cover (24).
A drain port is formed at the position of the inclined end of 1), a drain hose is connected to the drain port, and this drain hose passes through the outer wall of the box (9) and is led out of the box (9). Is open.

Then, when the operation of the device is started, the radiator (1) outside the box (9) whose temperature is increased by the two electronic cooling elements (22).
The outside air from the radiating fan (19) is covered by the fan cover (1).
8) Substrate (13), heat guide (14), decorative board (1
6) and the space formed by the side plate (17), that is, between the fins of both fins (15), the heat of the radiator (11) is released to the outside air and discharged upward, Forced air cooling.

On the other hand, the heat absorbing fin (23) in the box (9) whose temperature has been lowered by the two elements (22) has high temperature and high humidity in the box (9) sucked into the cover (24) by the suction fan (28). Air is introduced, and the heat absorbing fin (23) absorbs heat from this air to condense moisture in the air, and the air dried at a low temperature through the heat absorbing fin (23) is guided by the guide plate (30) and exhausted. It is returned into the box (9) through the hole (26).

At this time, the air from the intake fan (28) is constricted by the restricting portion (27) of the cover (24) and is guided intensively to the heat absorbing fin (23). The dehumidification and cooling effects are enhanced.

In this way, the water condensed in the endothermic fin (23)
The water flows out of the drain port through the guide plate (30) and the inclined surface (31) of the cover (24), and is drained out of the box (9) through a drain hose.

〔The invention's effect〕

As described above, according to the radiator of the present invention, between each side edge of the board portion and each side edge of the decorative plate portion at the tip of the heat guide protruding from the center portion of the board portion, The side plates that cover the fins provided on both sides of the heat guide are press-fitted, so that the fins are not exposed to the outside, there is no need to worry about touching the hot fins, and safety is ensured. There is no need to worry about breakage of each fin in the fin section.

Moreover, since the exterior case can be constituted by the decorative plate portion and the side plate, a separate component for covering the fin portion is not required, and
The number of parts and the number of assembling steps can be reduced and the size can be reduced.

[Brief description of the drawings]

1 to 3 show an embodiment in which a radiator according to the present invention is applied to a dehumidifying / cooling device. FIG. 1 is a plan view of the device, FIG. The figure is a cut-away side view of the apparatus, and FIGS. 4 and 5 are a cut-away side view and a cut-away plan view of a cooling device using a conventional radiator. (11)… radiator, (13)… board part, (14)… heat guide, (15) fin part, (16)… decorative board part, (1)
7) Side plate, (22) Electronic cooling element.

Claims (1)

(57) [Claims] 1. A radiator attached to a heat generating surface of an electronic cooling element for radiating heat received from the heat generating surface, comprising: a substrate having a joint surface with the heat generating surface; A heat guide protruding in the orthogonal direction, a fin portion provided on both sides of the heat guide, each having a plurality of fins juxtaposed in the orthogonal direction, and a tip of the heat guide attached to the substrate portion. A decorative plate portion provided in parallel is integrally formed, and a side plate that covers the outside of the fin portions is press-fitted between both side ends of the substrate portion and both side ends of the decorative plate portion. A radiator characterized in that: