JPH09318282A - Heat pipe type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat pipe type heat exchanger used for cooling an inside area of a casing of a control panel and the like and further make a substantial reduction of the number of component parts than those of prior arts. SOLUTION: A central part in the longitudinal direction of a flat long pipe plate 41 having many holes punched therein is bent and a pair of multi-punched pipe containers 41d are spaced apart in a desired distance and arranged in parallel at both sides of the bent part 41c. End portions of a pair of multi- punched pipe containers 41d are connected to a refrigerant tank 43 so as to form a heat pipe device. In addition, a plurality of heat pipe devices are piled up to constitute a heat pipe type heat exchanger through corrugated fins 53.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pipe type heat exchanger, and more particularly to a heat pipe type heat exchanger used for cooling the inside of a casing such as a control panel.

[0002]

2. Description of the Related Art Conventionally, as a heat pipe type heat exchanger used for cooling the inside of a housing such as a control panel, for example
The one disclosed in Japanese Patent Publication No. 7254 is known. FIG. 6 shows a heat pipe type heat exchanger disclosed in this publication. In this heat pipe type heat exchanger, a flat and long multi-hole pipe container 11 is vertically arranged via corrugated fins 13. The core portion 15 is formed by stacking a plurality of layers.

On one side of each multi-hole pipe container 11, a refrigerant tank 17 for containing a working liquid for a heat pipe is arranged. The other side of the multi-hole pipe container 11 is closed by a lid member 19.

On the back surface of the core portion 15, the duct 21
Are arranged, and a high temperature gas passage 23 and a low temperature gas passage 25 are formed.

[0005]

However, in such a conventional heat pipe type heat exchanger, the refrigerant tanks 17 are arranged on one side of the multi-hole pipe container 11, respectively.
Further, the lid member 19 is provided on the other side of the multi-hole pipe container 11 respectively.
Are arranged to form the heat pipe unit,
There has been a problem that the number of parts increases and the number of assembly steps increases.

The present invention has been made in order to solve such a conventional problem, and an object thereof is to provide a heat pipe type heat exchanger capable of significantly reducing the number of parts as compared with the conventional one.

[0007]

A heat pipe type heat exchanger according to a first aspect of the present invention is characterized in that a flat elongated multi-hole tube plate is bent at the center in the longitudinal direction, and a predetermined interval is provided on both sides of the bent portion. And a pair of multi-hole pipe container portions are formed in parallel with each other, and ends of the pair of multi-hole pipe container portions are connected to a refrigerant tank to form a heat pipe unit. .

A heat pipe type heat exchanger according to a second aspect is the heat pipe type heat exchanger according to the first aspect, characterized in that a plurality of the heat pipe units are laminated via corrugated fins. The heat pipe heat exchanger according to claim 3 is the heat pipe heat exchanger according to claim 1 or 2, wherein corrugated fins are arranged between a pair of multi-hole pipe container portions of the heat pipe unit. Is characterized by.

(Operation) In the heat pipe heat exchanger according to the first aspect of the present invention, the flat elongated multi-hole tube plate is bent at the center in the longitudinal direction so that predetermined intervals are provided on both sides of the bent portion. And a pair of multi-hole pipe container parts are formed in parallel. Further, the ends of the pair of multi-hole pipe container parts are connected to the refrigerant tank to form a heat pipe unit.

In the heat pipe type heat exchanger of claim 2,
A plurality of heat pipe units are laminated via corrugated fins to form a core portion. In the heat pipe type heat exchanger of claim 3, the corrugated fin is arranged between the pair of multi-hole pipe container portions of the heat pipe unit.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the details of the heat pipe unit of FIG. 2, and FIGS. 2 to 4 show one embodiment of the heat pipe type heat exchanger of the present invention. 2 to 4, reference numeral 31 indicates a heat pipe unit. A large number of these heat pipe units 31 are stacked in the horizontal direction via corrugated fins 33 made of an aluminum clad material to form a core portion 35.

On both sides of the core portion 35, side plates 37 made of an aluminum clad material are arranged. And
In this heat pipe type heat exchanger, the core portion 35 and the side plate 37 are arranged such that the lower side of the center is arranged inside a casing 39 such as a control panel and the upper side is arranged outside the casing 39 for use.

FIG. 1 shows the details of the heat pipe unit 31, and reference numeral 41 denotes a flat and long multi-hole tube plate. The multi-hole tube plate 41 is formed of a metal having good thermal conductivity such as aluminum.

Further, the multi-hole pipe plate 41 is formed by extrusion molding, and as shown in FIG. 5, a plurality of pipe lines 41a are formed at predetermined intervals in the width direction.
A wick 41b having minute irregularities is formed on the inner surface of the conduit 41a. The center of the multi-hole pipe plate 41 in the longitudinal direction is bent in a U shape, and a pair of multi-hole pipe container parts 4 are arranged in parallel on both sides of the bent part 41c with a predetermined interval.
1d is formed.

The end portions of the pair of multi-hole pipe container portions 41d are brought into contact with each other, and the tank body 4 of the refrigerant tank 43 is
5 is inserted into a connection hole 45a formed in the connection hole 5. The tank body 45 is made of aluminum, and both sides of the tank body 45 are made of aluminum patch ends 47, 49.
It is sealed by. On one side patch end 47,
A hydraulic fluid supply pipe 51 for supplying hydraulic fluid is opened.

Between the pair of multi-hole pipe container portions 41d,
Corrugated fins 53 are arranged. In the heat pipe heat exchanger described above, first, the corrugated fins 53 are inserted between the pair of multi-hole pipe container portions 41d, and the plate-shaped brazing material 55 is inserted at the ends of the pair of multi-hole pipe container portions 41d. In this state, the end portions of the pair of multi-hole pipe container portions 41d have the tank main body 4 with the patch ends 47 and 49 fitted therein.
5 is inserted into the connection hole 45a of the heat pipe unit 31.
Is assembled.

Then, as shown in FIG. 2, a plurality of heat pipe units 31 are stacked via corrugated fins 33, side plates 37 are arranged on both sides of the core portion 35, and temporary assembly is performed. After that, they are brazed in a brazing furnace and integrally joined.

Further, from the coolant inlet 51a formed in the hydraulic fluid supply pipe 51 of the patch end 47,
A predetermined amount of a refrigerant such as acetone or Freon is injected into the refrigerant tank 43, and then the refrigerant tank 43 and the multi-hole pipe container portion 41d are evacuated from the refrigerant injection port 51a, and the refrigerant of the hydraulic fluid supply pipe 51 is cooled. A heat pipe type heat exchanger is manufactured by sealing the inlet 51a.

In the heat pipe type heat exchanger described above, the core 35 and the side plate 37 are arranged in the housing 39 such as a control panel such that the lower side thereof is located in the housing 39, and the hot air inside the housing 39 is interposed via the corrugated fins 33 and 53. And the refrigerant in the multi-hole pipe container portion 41d located in the housing 39 is evaporated,
The evaporated refrigerant is heat-exchanged with the relatively low temperature outside air through the corrugated fins 33 and 53 in the multi-hole pipe container portion 41d located outside the housing 39, cooled, condensed, and liquefied, and in the refrigerant tank 43. Returned inside.

In the heat pipe type heat exchanger configured as described above, the center of the flat elongated multi-hole tube plate 41 in the longitudinal direction is bent, and a pair of multi-holes are provided on both sides of the bent portion 41c. Since the pipe container portion 41d is formed, it is possible to obtain a pair of multi-hole pipe container portions 41d with one component. In addition, the bent portion 41 is provided on one side of the multi-hole pipe container portion 41d.
Since c is formed, a lid member for sealing the multi-hole pipe container portion 41d becomes unnecessary.

Furthermore, since the end portions of the pair of multi-hole pipe container portions 41d are connected to one refrigerant tank 43 to form the heat pipe unit 31, one refrigerant tank 43 is paired with one refrigerant tank 43. It can be shared by the hole tube container portion 41d, and the number of the refrigerant tanks 43 can be halved. Therefore, in the above-mentioned heat pipe type heat exchanger,
The number of parts can be significantly reduced as compared with the conventional one, and the number of assembling steps can be reduced.

In the heat pipe type heat exchanger described above, since the pair of multi-hole pipe container portions 41d are formed in a loop shape via the bent portion 41c and the refrigerant tank 43, the rigidity of the heat pipe unit 31 is increased. Will be very high. Further, in the heat pipe type heat exchanger described above, the heat pipe unit 31 is connected to the corrugated fins 33.
Since a plurality of layers are laminated via the heat exchanger, heat exchange efficiency can be improved.

Further, since the corrugated fins 53 are arranged between the pair of multi-hole pipe container portions 41d of the heat pipe unit 31, the heat exchange efficiency can be further improved.

[0025]

As described above, in the heat pipe type heat exchanger according to the first aspect of the present invention, the flat elongated multi-hole tube plate is bent at the center in the longitudinal direction, and a pair of pipes are provided on both sides of the bent portion. Since the multi-hole pipe container part is formed, it is possible to obtain a pair of multi-hole pipe container parts by one component.

Further, since the bent portion is formed on one side of the multi-hole pipe container portion, a lid member for sealing the multi-hole pipe container portion becomes unnecessary. Further, since the end portions of the pair of multi-hole pipe container parts are connected to one refrigerant tank to form the heat pipe unit, one refrigerant tank is shared by the pair of multi-hole pipe container parts. It is possible to reduce the number of refrigerant tanks by half.

Therefore, in the heat pipe type heat exchanger according to the first aspect, the number of parts can be greatly reduced as compared with the conventional one, and the number of assembling steps can be reduced. Claim 1
In the heat pipe type heat exchanger, since the pair of multi-hole pipe container portions are formed in a loop shape through the bent portion and the refrigerant tank, the heat pipe unit has extremely high rigidity.

In the heat pipe type heat exchanger of claim 2,
Since a plurality of heat pipe units are laminated via corrugated fins, heat exchange efficiency can be improved. In the heat pipe type heat exchanger of claim 3, since the corrugated fins are arranged between the pair of multi-hole pipe container portions of the heat pipe unit, the heat exchange efficiency can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing the heat pipe unit of FIG.

FIG. 2 is a front view showing an embodiment of the heat pipe type heat exchanger of the present invention.

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a side view of FIG.

5 is a cross-sectional view of the multi-well tube plate of FIG.

FIG. 6 is a perspective view showing a conventional heat pipe type heat exchanger.

[Explanation of symbols]

 31 heat pipe unit 33, 53 corrugated fin 41 multi-hole pipe plate 41c bent portion 41d multi-hole pipe container portion 43 refrigerant tank

Claims (3)

[Claims] 1. A pair of multi-hole tubes in which a flat elongated multi-hole tube plate (41) is bent at the center in the longitudinal direction and is parallel to both sides of the bent portion (41c) at a predetermined interval. A heat pipe unit (31) is formed by forming a container part (41d) and connecting the ends of the pair of multi-hole pipe container parts (41d) to a refrigerant tank (43). And heat pipe type heat exchanger. 2. The heat pipe heat exchanger according to claim 1, wherein a plurality of the heat pipe units (31) are laminated via corrugated fins (33). . 3. The heat pipe heat exchanger according to claim 1, wherein corrugated fins (53) are arranged between the pair of multi-hole pipe container portions (41d) of the heat pipe unit (31). The heat pipe type heat exchanger characterized in that