JPH0229417Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a heat exchanger comprising a plurality of heat sinks and a pair of upper and lower connecting pipes that connect the heat sinks.

[Prior art]

FIGS. 1 and 2 are diagrams showing a conventional heat exchanger disclosed in, for example, Japanese Utility Model Application Publication No. 58-112874. In the figures, 1 is a heating element, 2 is an outer box that houses the heating element 1, 3 is a heat exchanger, 4 is a heat exchange medium sealed inside the outer box 2 and the heat exchanger 3, and 5 is a plurality of heat sinks forming the heat exchanger 3, in which two metal plates 51 are stacked one on top of the other. A passage for the heat exchange medium 4 is formed. 6
are openings provided at the upper and lower ends of the heat sink plate 5, which serve as inlets and outlets for the heat exchange medium 4;
It is formed by bending the end portion 52 of 1 outward as shown in FIG. Then, the end portion 52 of the metal plate 51 and the opposite end portion 52 of the adjacent metal plate 51 are welded and connected to connect a plurality of heat sink plates 5. 7 is metal plate 5
A connecting pipe 8 is provided at each end of the connecting pipe 7 of the heat exchanger 3. A flange 9 is a flange attached to the outer box 2, and a flange 10 is a butterfly valve inserted between the flanges 8 and 9.

Next, the operation will be explained. The heat exchange medium 4 heated by the heating element 1 enters into each heat sink 5 from the upper flange 9 through the butterfly valve 10, the flange 8, the upper connecting pipe 7, and the upper openings 6. Each opening 6 at the bottom passes between the plates 51.
The heat generated by the heating element 1 is transferred to the atmosphere by the heat exchanger 3. released into the

As described above, the conventional heat exchanger requires a pair of upper and lower connecting pipes 7, flanges 8 and 9, and a butterfly valve 10 for a group of heat sinks 5 arranged in a row. There is a drawback that the installation cost for installing the exchanger increases, and since each connecting pipe 7 is located at the center of the upper and lower ends of the heat sink 5, the air side duft formed between the heat sinks 5 is heated. Another drawback was that the rising air was obstructed and the cooling properties deteriorated.

[Summary of the idea]

This idea was made to eliminate the drawbacks of the conventional ones as described above, and it consists of a heat exchanger half with a pair of upper and lower connecting pipe halves attached to the sides of a plurality of panel-shaped heat sinks, and To provide a heat exchanger which is inexpensive and highly reliable against leakage at a welded part by joining and integrating a heat exchanger half and another heat exchanger half configured symmetrically with a connecting pipe half. It is an object.

[Example of idea]

An embodiment of this invention will be described below with reference to FIGS. 3 to 7. 1, 2, 4, 8-1 in the figure
0 is the same as in FIG. Reference numeral 11 denotes a heat exchanger, which, as shown in FIG. 4, consists of symmetrical heat exchanger halves 11A and 11B. Heat exchanger half 11A
As shown in FIGS. 5 and 6, there are a plurality of panel-shaped heat sinks 12 and a pair of upper and lower connecting pipe halves 1 whose cross sections are approximately U-shaped or semicircular and are fixed to each heat sink 12.
It consists of 3. As shown in FIG. 7, the heat sink 12 is composed of two metal plates 12a stacked one on top of the other so that a passage for the heat exchanger medium 4 is formed between the plates.
14 is an opening provided at the upper and lower ends of one side of the heat sink 12, and 15 is a through hole provided in the connecting pipe half 13.
4 is fitted as shown in FIG. 5, and welded along the shape of the opening 14 to form the connecting pipe half 13.
is fixed to each heat sink 12. The other heat exchanger half 11B is symmetrical with the heat exchanger half 11A described above, so it will not be described in detail, but it includes a plurality of panel-shaped heat sinks 12 and a pair of upper and lower panels fixed to each heat sink 12. It consists of a connecting pipe half body 13. The heat exchanger half body 11A constructed as described above and the heat exchanger half body 11B constructed laterally symmetrically are joined to each other at the connecting pipe half body 13 to be integrated.

Therefore, the heat exchange medium 4 heated by the heating element 1 passes from the upper flange 9 through the upper connecting pipe 16 formed by the butterfly valve 10, the flange 8 and the two connecting pipe halves 13 to the upper part. each hole 15,
It enters each heat sink 12 on both the left and right sides through each opening 14, passes between the metal plates 12a, passes through each lower opening 14 and each hole 15, and passes through the lower connecting pipe 16 to the flange 8 and the butterfly valve. 10. Heat generated by the heating element 1 is convected back to the outer box 2 through the fan 9 and released to the atmosphere by the heat exchanger 11.

Note that the two connecting pipe halves 13 are joined to each other by appropriate means such as welding or bolting flanges (not shown).

[Effect of idea]

As described above, according to this invention, there is a heat exchanger half in which a pair of upper and lower connecting pipe halves are attached to the sides of a plurality of panel-shaped heat sinks, and another heat exchanger half that is configured symmetrically with this heat exchanger half. By joining the exchanger halves with the connecting pipe halves and integrating them, the number of the upper and lower connecting pipes, the flanges 8 and 9, and the butterfly valve 10 can be reduced by half compared to the conventional one. In addition, the connecting pipes, which used to be located at the center of the upper and lower ends of the heat sink, are now located on the sides of the heat sink. The air that is heated in the air side duct and rises rises unhindered, which improves the cooling effect.Also, since the connecting pipe halves can be welded to each heat sink while the heat exchanger half is in place, heat radiation is improved. It becomes easier to weld along the shape of the opening in the plate, and leakage from this welded portion is significantly reduced, resulting in high reliability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional heat exchanger, FIG. 2 is a perspective view showing a part of the heat sink of FIG. 1, and FIG. 3 is a perspective view showing a heat exchanger according to an embodiment of the invention. Fig. 4 is a front view of Fig. 3, Fig. 5 is an enlarged sectional view showing a part of Fig. 4, Fig. 6 is a side view of Fig. 5, and Fig. 7 is a perspective view showing a part of the heat sink. be. In the figure, 2 is an outer box, 4 is a heat exchange medium, 11 is a heat exchanger, 11A, 11B are heat exchanger halves, 12 is a heat sink, 12a is a metal plate, 13 is a connecting pipe half, and 14 is an opening , 15 are through holes. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of panel-shaped heat sinks each forming a passage for a heat exchange medium therein and having openings at the upper and lower ends of one side serving as entrances and exits for the heat exchange medium, and A heat exchanger consisting of a pair of upper and lower connecting pipe halves that have a plurality of through holes corresponding to the openings of each heat sink, and are welded along the shape of the opening and fixed to the plurality of heat sinks. and another heat exchanger half formed symmetrically with this heat exchanger half, and the two connecting pipe halves are joined to each other to form these two heat exchanger halves. A heat exchanger characterized by integrating the. (2) The heat exchanger according to claim 1, wherein the heat sink is composed of two metal plates stacked one on top of the other so that a passage for the heat exchange medium is formed between the plates. (3) The heat exchanger according to claim 1 or 2, wherein the heat sink is substantially square.