JP2006145148A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To evenly communicate a first fluid to each part of a heat exchanger in regard to a thin and flat heat exchanger. <P>SOLUTION: A partition plate 4 is joined so as to hold it between a pair of dish like plates 1 and 2, pairs of a first tank part 7 and a second tank part 8 are provided on both end faces of the partition plate 4, and a supply pipe 10 provided with a multiplicity of outflow holes 9 is inserted into the first tank part 7 in an inlet side. The first fluid 11 is sent into the first tank part 7 via each outflow hole 9 of the supply pipe 10, and the first fluid 11 is supplied to each part of a first passage 5 from the first tank part 7. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a compact and low-cost heat exchanger having a pair of dish-shaped plates and a partition plate interposed therebetween.

The present applicant has already proposed a compact plate-type heat exchanger described in Patent Documents 1 to 3.
This is one in which a partition plate is sandwiched between a pair of plate-shaped plates, corrugated fins are integrally formed at an intermediate portion of the partition plate, and tank portions are provided at both ends of the partition plate. And each fluid was distribute | circulated through the partition from one tank part to the other tank part.

JP 2004-205058 A JP 2004-150672 A JP 2004-263937 A

When a flat and compact heat exchanger is formed by a pair of shallow dish-shaped plates and a partition plate, if fluid is supplied from the inlet tank portion at one end to the outlet tank portion at the other end, the fluid inlet is closer to the fluid inlet. There is a drawback that the fluid flows unevenly and cannot be distributed uniformly. In particular, in the case of having a flat flow path, the drawback is remarkable.
Accordingly, an object of the present invention is to allow a fluid to flow uniformly to each part of the flat flow path in a heat exchanger having a flat flow path and a narrow tank at its end.

The present invention according to claim 1 comprises a pair of dish-like plates (1) (2) having a raised peripheral edge,
A partition plate (4) having corrugated fin portions (3) on both sides of the intermediate portion;
Comprising
End edges of the raised peripheral edges of the pair of plate-like plates (1) (2) are joined so as to sandwich the peripheral edge of the partition plate (4), and are attached to one surface side of the partition plate (4). A flat first flow path (5) for flowing the first fluid is formed, a flat second flow path (6) for flowing the second fluid is formed on the other surface side, and the first flow path ( A pair of first tank portions (7) are formed in both end space portions where the corrugated fin portion (3) does not exist in 5), and both end spaces where the corrugated fin portion (3) does not exist in the second flow path (6). A pair of second tank parts (8) is formed in the part,
Each tank part (7) (8) has an entrance and exit,
A distributor supply pipe (10) having a large number of outflow holes (9) spaced apart in the axial direction is inserted into the first tank section (7) on the inlet side of the first flow path (5),
The first fluid (11) once flows out from each outflow hole (9) of the supply pipe (10) to each part of the first tank section (7) on the inlet side, and then the first flow path (5). It is the heat exchanger comprised so that it might be supplied to each part.

The present invention according to claim 2 is the method according to claim 1,
It is a heat exchanger in which corrugated fins (12) are joined to both surfaces of the partition plate (4).
The present invention according to claim 3 provides the method according to claim 1,
The partition plate (4) itself is a heat exchanger that is bent in a wave shape at an intermediate portion thereof.

A fourth aspect of the present invention provides the method according to any one of the first to third aspects,
One end portion of the partition plate (4) is bent into a substantially S-shaped cross section, and the partition plate (4) and the inner surface of the plate-like plate are divided into a wide portion and a narrow portion. A heat exchanger in which a supply pipe (10) is inserted and the first tank part (7) on the inlet side and the second tank part (8) adjacent thereto are spaced apart in the flow direction of each flow path It is.

  In the heat exchanger of the present invention, a partition plate 4 having a corrugated fin portion 3 is sandwiched between a pair of plate-like plates 1 and 2, and a distributor supply pipe is connected to a first tank portion 7 provided at an end thereof. 10 is inserted, and the first fluid 11 is supplied to the first tank portion 7 through a number of outflow holes 9 provided in the supply pipe 10, and then supplied to each portion of the first flow path 5. It is. Therefore, even the first tank portion 7 on the narrow inlet side can uniformly distribute the first fluid 11 to each portion of the flat first flow path 5. This is because a large number of outflow holes 9 are formed in the supply pipe 10 so as to be separated from each other in the axial direction, and the first fluid 11 is supplied to each part in the first tank part 7 from each hole, and the first fluid is mixed there. This is because it is supplied to each part of the first flow path. Thereby, it becomes a compact and good performance heat exchanger.

In the above configuration, when the corrugated fins 12 are joined to both surfaces of the partition plate 4, a heat exchanger that is easy to manufacture and has good performance can be provided.
In the above configuration, when the partition plate 4 itself is bent in a wave shape at the intermediate portion thereof, a more compact heat exchanger with fewer parts can be provided.

  In any of the above-described configurations, heat exchange in which one end portion of the partition plate 4 is bent into a substantially S-shaped cross section and the first tank portion 7 and the second tank portion 8 are arranged separately in the flow direction of each flow path. In the heat exchanger, the cross-sectional areas of the first tank part 7 and the second tank part 8 can be made as large as possible with respect to the amplitude of the wave of the corrugated fin part 3, thereby enabling a compact and high-performance heat exchanger. Can provide.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view of a heat exchanger showing a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II in FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 2, and FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG.

The heat exchanger of the present invention has a pair of plate-like plates 1, 2, a partition plate 4 and a supply pipe 10 as shown in FIG. In this example, the pair of plate-like plates 1 and the partition plate 4 are formed in a square shape whose outer peripheries are aligned. In addition, the outer periphery shape can also be made into arbitrary shapes suitably. The plate-like plates 1 and 2 are formed in a shallow plate shape whose outer periphery is raised, and in the figure, a slit 19 is opened at the upper edge, and one plate-like plate 1 has a hole 17 at the lower left end thereof. A supply pipe 10 is inserted from there. The other plate-like plate 2 is provided with a hole 17 at the lower right end in the figure, and a lead-out pipe is connected thereto.
The supply pipe 10 serves as a distributor, and a large number of outflow holes 9 are formed so as to be evenly spaced in the axial direction.

Next, the corrugated fins 3 are formed by arranging the corrugated fins 12 on both sides of the partition plate 4. The corrugated fin portions 3 are arranged with a space for the tank portion at the upper and lower end portions of the partition plate 4, and are arranged with a slight margin for connecting the plate-like plates 1 and 2 on both sides.
In the heat exchanger composed of such components, a supply pipe 10 is inserted into one dish-shaped plate 1 and a pipe is connected to the other dish-shaped plate 2. In a state where the periphery of 4 is sandwiched, the parts are brazed and fixed together to complete the heat exchanger. At this time, both surfaces of the corrugated fin portion 3, the plate-like plates 1 and 2, and the partition plate 4 are brazed and fixed integrally. A pair of first tank portion 7 and second tank portion 8 are provided at both upper and lower ends of both surfaces of the partition plate 4, and a supply pipe 10 is inserted through the first tank portion 7 on the lower side in the drawing.

As an example, the open ends of the first duct 15 and the second duct 16 are connected to the upper first tank section 7 and the second tank section 8. Moreover, you may connect the pipe which is not shown in figure which has a slit matched with the slit 19 of each tank part 7 and 8 instead of the duct. Alternatively, fluid inlets and outlets of various devices may be directly connected to each slit 19.
A first flow path 5 is formed between the pair of first tank portions 7, and a second flow path 6 is formed between the pair of second tank portions 8.
As the first fluid 11, a cooling fluid is introduced into the supply pipe 10, and flows out equally from the respective outflow holes 9, and then enters the first tank portion 7, and is mixed there. It flows uniformly to each part of the flow path 5 and is led to the first duct 15 from the slit 19 at the upper end.

  For example, the second dish-like plate 2 is guided by the second duct 16 through the second duct 16 to the second tank part 8 through the slit 19, and is uniformly distributed on each part of the dish-like plate 2. It circulates and flows out from the second tank part 8 at the lower end. The first fluid 11 and the second fluid 14 are opposed to each other, and heat exchange is performed between both fluids via the partition plate 4.

Next, FIG. 5 shows another example of the partition plate 4 of the present invention. In this example, the partition plate 4 and the corrugated fin portion 3 are integrally formed, and FIG. 6 shows the assembled state. 7 is a cross-sectional view taken along line VII-VII in FIG.
In order to manufacture the partition plate 4, first, the upper and lower ends of the corrugated fin 18 bent into a corrugated shape as shown in FIG. 5A are crushed as shown in FIG. 5B. And this is accommodated between the plate-shaped plate 1 and the plate-shaped plate 2 as shown in FIG. In addition, you may use what formed the waveform previously only in the intermediate part.

  Next, FIG. 8 is an exploded view illustrating still another embodiment of the present invention. In this example, a bent portion 13 having a substantially S-shaped cross section is formed at the lower end portion of the partition plate 4. The first tank portion 7 and the second tank portion 8 are disposed adjacent to each other in the vertical direction. Further, the plate-like plates 1 and 2 have side portions that are aligned with both sides of the odd-shaped partition plate 4, and sandwich both surfaces of the partition plate 4. The supply pipe 10 is inserted into the first tank portion 7 of the partition plate 4 and the parts are integrally brazed and fixed. The longitudinal sectional view is FIG. 9 and the transverse sectional view is FIG.

A narrow passage is formed between the lower first tank portion 7 and the first flow path 5. Then, the first fluid 11 flowing out from the supply pipe 10 flows therethrough and is guided to the first flow path 5. Further, the second fluid 14 flowing down from above is introduced into the hole 17 of the second tank portion 8.
By configuring in this way, the width of the first tank portion 7 and the second tank portion 8 is ensured to be larger than the amplitude of the corrugated fin portion 3, and the fluid is smoothly circulated, and the thickness is thin as a whole. A compact heat exchanger can be provided.

The disassembled perspective view of the heat exchanger which shows the 1st Embodiment of this invention. FIG. 4 is a sectional view taken along the line II-II in FIG. 3, showing an assembled state of the heat exchanger. III-III arrow sectional drawing of FIG. FIG. 4 is a cross-sectional view taken along arrow IV-IV in FIG. 2. Explanatory drawing which shows the other example of the partition plate 4 used for the heat exchanger of this invention.

The longitudinal cross-sectional view of the heat exchanger which has the partition plate 4. FIG. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. The disassembled perspective view which shows the further another example of the heat exchanger of this invention. The longitudinal cross-sectional view which shows the assembly state of the same heat exchanger. XX sectional view taken on the line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Dish plate 2 Dish plate 3 Corrugated fin part 4 Partition plate 5 1st flow path 6 2nd flow path 7 1st tank part 8 2nd tank part 9 Outflow hole
10 Supply pipe

11 First fluid
12 corrugated fins
13 Turn part
14 Second fluid
15 First duct
16 Second duct
17 holes
18 corrugated fins
19 Slit

Claims (4)

A pair of dished plates (1) (2) with raised edges,
A partition plate (4) having corrugated fin portions (3) on both sides of the intermediate portion;
Comprising
End edges of the raised peripheral edges of the pair of plate-like plates (1) (2) are joined so as to sandwich the peripheral edge of the partition plate (4), and are attached to one surface side of the partition plate (4). A flat first flow path (5) for flowing the first fluid is formed, a flat second flow path (6) for flowing the second fluid is formed on the other surface side, and the first flow path ( A pair of first tank portions (7) are formed in both end space portions where the corrugated fin portion (3) does not exist in 5), and both end spaces where the corrugated fin portion (3) does not exist in the second flow path (6). A pair of second tank parts (8) is formed in the part,
Each tank part (7) (8) has an entrance and exit,
A distributor supply pipe (10) having a large number of outflow holes (9) spaced apart in the axial direction is inserted into the first tank section (7) on the inlet side of the first flow path (5),
The first fluid (11) once flows out from each outflow hole (9) of the supply pipe (10) to each part of the first tank section (7) on the inlet side, and then the first flow path (5). A heat exchanger configured to be supplied to each part. In claim 1,
A heat exchanger in which corrugated fins (12) are joined to both surfaces of the partition plate (4). In claim 1,
A heat exchanger in which the partition plate (4) itself is bent into a corrugated shape at an intermediate portion thereof. In any one of Claims 1-3,
One end portion of the partition plate (4) is bent into a substantially S-shaped cross section, and the partition plate (4) and the inner surface of the plate-like plate are divided into a wide portion and a narrow portion. A heat exchanger in which a supply pipe (10) is inserted and the first tank part (7) on the inlet side and the second tank part (8) adjacent thereto are spaced apart in the flow direction of each flow path .

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