JP2003279283A - Heat exchanger and method of manufacture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger and a manufacturing method applicable even to a simple and inexpensive microchannel type. <P>SOLUTION: This heat exchanger is characterized in that a fluid passage of a plate for fluid and a header through hole offered to supply and discharge the fluid to the fluid passage arranged in a header plate are made by punching of a press, a laminated passage unit is composed of the plate for the fluid and the header plate, the fluid passage arranged in the plate for the fluid in one laminated passage unit is arranged in a position different from a fluid passage arranged in a plate for fluid in the other laminate passage unit joined to one laminated passage unit, and a high temperature fluid is made to flow in the one laminated passage unit so as to exchange heat by making a low temperature fluid flow to the other laminated passage unit joined to the one laminated passage unit. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger used in a reformer for a distributed power source and the like, and a method for manufacturing the heat exchanger.
The present invention relates to a heat exchanger that can be easily manufactured at low cost and a manufacturing method thereof.

[0002]

2. Description of the Related Art It is known that the laminar flow heat transfer coefficient in the internal flow increases as the cross-sectional dimension of the flow passage decreases. In addition, when the cross-sectional dimension of the flow channel becomes small, the surface area that can be used for heat exchange per unit area also increases. This increase in heat transfer coefficient and increase in heat exchange surface area can greatly improve the performance of the heat exchanger. Therefore, when a heat exchanger having a small flow passage cross-sectional dimension such as a microchannel is used, for example, a heat exchanger in a reformer for a distributed power source, a heat sink for cooling semiconductor elements, or a heat exchanger in an air conditioner can be downsized. And it is possible to create with high performance.

Therefore, for example, Japanese Unexamined Patent Publication No. 6-326226
In the gazette, a plurality of grooves are provided in parallel on the side opposite to the semiconductor mounting surface of the semiconductor substrate, and a cover plate having through holes forming the inlet and the outlet of the refrigerant provided at both ends is covered over the through holes. A cooling device using a microchannel is shown in which a semiconductor device is cooled by inserting a coolant and discharging it through a groove at the other end through a groove. In addition, in air conditioners that use conventional plate fin heat exchangers and fin-and-tube heat exchangers,
Although the amount of refrigerant staying in the heat exchanger is larger than that of the microchannel heat exchanger, the microchannel heat exchanger can be significantly downsized due to the reason described above, and the amount of the refrigerant used can be small. It is also effective as a refrigerant-saving device that responds to environmental pollution.

However, in such a micro-channel heat exchanger, as shown in FIG. 86, the flow passages 72 and 73 through which the fluid flows are formed in the plates 70 and 71 by etching, and these plates 70 are conventionally formed. , 71 are superposed on each other. However, such a method using etching has a problem that processing time is increased and processing cost is increased, and further, when the plate is thin, processing by etching is difficult.

Therefore, in Japanese Unexamined Patent Publication No. 2000-249486, the high temperature channel plate and the low temperature channel plate are punched so that the channels are orthogonal to each other, and a partition plate is sandwiched between the channel plates. In a laminated type heat exchanger, there is shown a device in which a portion where a load during adhesion is hard to be applied is narrowed in the flow paths of the plates so as to prevent this problem. Further, in Japanese Patent Laid-Open No. 2001-215092, the flow paths of the high temperature flow path plate and the low temperature flow path plate are formed by punching at the same position so that only the fluid inlet and the fluid discharge of the respective plates do not overlap. , An apparatus for forming a counter flow type laminated heat exchanger by laminating a partition plate between the flow path plates.

[0006]

However, these JP-A-6-326226 and JP-A-2000-249.
In the devices disclosed in Japanese Patent Laid-Open No. 486/1986 and Japanese Patent Laid-Open No. 2001-215092, what is disclosed in Japanese Patent Laid-Open No. 6-326226 is a semiconductor device cooling device, not a heat exchanger, but Japanese Patent Laid-Open No. 2000-249486. The apparatus disclosed in Japanese Patent Laid-Open No. 2001-2 is a cross flow type in which a high temperature fluid and a low temperature fluid flow in a direction perpendicular to each other and the heat exchange efficiency is poor.
In the apparatus disclosed in 15092, a partition plate is inserted between the high temperature channel plate and the low temperature channel plate, and the heat exchange efficiency is also poor.

Therefore, in the present invention, simple and inexpensive,
Moreover, it is an object to provide a heat exchanger and a manufacturing method which can be applied to a micro channel type with high heat exchange efficiency.

[0008]

In order to solve the above-mentioned problems, the invention as set forth in claim 1 is directed to a fluid plate formed by punching out a fluid passage, and both end portions of the fluid passage of the fluid plate. The laminated flow path unit formed by combining the header plate formed by punching out the through holes for the header for supplying and discharging the fluid corresponding to In the exchanger, a fluid channel provided in a fluid plate in another laminated channel unit that connects the fluid channel provided in the fluid plate in the one laminated channel unit to the one laminated channel unit It is characterized in that it is provided at a position different from that of the above, and a high temperature fluid is flown into one laminated flow channel unit and a low temperature fluid is caused to flow into another laminated flow channel unit that is coupled to the one laminated flow channel unit to perform heat exchange. To.

According to a fourth aspect of the manufacturing method of the invention described in the first aspect, there is provided a fluid plate having a fluid channel, and a fluid supply and discharge to and from the fluid channel in the fluid plate. A method for manufacturing a heat exchanger comprising a laminated flow channel unit configured by combining with a header plate provided with a through hole for a header to be provided, and preparing and coupling the laminated flow channel unit for a high temperature fluid and a low temperature fluid. At
The fluid channel in the fluid plate of the one laminated channel unit is punched to a position different from the fluid channel in the fluid plate of the other laminated channel unit that is coupled to the one laminated channel unit. Along with creating, the header through-holes provided for supply and discharge of fluid corresponding to both ends of the fluid channel in each fluid plate are punched into the header plate to create, and in the one laminated channel unit. A heat exchanger is manufactured without using an intermediate plate for fluid flow path separation by overlapping and coupling the fluid plate and a fluid plate of another laminated flow path unit that is coupled to the laminated flow path unit. It is characterized by

In this way, the fluid passage of the fluid plate,
In addition, the through holes of the header plate that supply and discharge the fluid to and from the fluid flow path are not punched by punching, but by punching by press working, which enables mass production in a short time, and makes the manufacturing cost cheaper and cheaper. A heat exchanger can be provided. Further, a position corresponding to a fluid channel provided on a fluid plate of one laminated channel unit between fluid channels on a fluid plate of another laminated channel unit that is coupled to this laminated channel unit. Since the fluid plate in the high-temperature laminated flow channel unit and the low-temperature laminated flow channel unit can be directly contacted with each other, the fluid can flow as a counter flow, so that high heat exchange performance can be obtained. There is an advantage that it can be obtained.

According to a second aspect of the present invention, the header through hole provided in the header plate of the one laminated flow passage unit for supplying and discharging the fluid is coupled to the one laminated flow passage unit. Is provided between header through-holes provided for the supply and discharge of the fluid provided in the header plate in the laminated flow channel unit of FIG. The length is made to correspond to the distance between the through holes for the header.

By configuring the heat exchanger in this way, the fluid plates in the high temperature laminated flow passage unit and the low temperature laminated flow passage unit can be brought into direct contact with each other, so that the heat exchange efficiency is higher. In the case where the header passages for supplying and discharging the fluid of the header plate in the laminated channel unit are all provided at the same position and the fluid channels of the fluid plate have the same length In comparison, the number of intermediate plates that isolate the header plates can be reduced by one, and the heat exchanger can be constructed at low cost.

Further, in the invention described in claim 3, the fluid passage in the fluid plate of the one laminated passage unit is provided on the header plate in the other laminated passage unit, and each plate is provided with the above-mentioned one. The header plate in the laminated flow channel unit, the header plate in the other laminated flow channel unit, the fluid plate in the other laminated flow channel unit, the fluid flow channel on the header plate in the other laminated flow channel unit It is characterized in that it is constructed by connecting the plates that have been moved in this order.

By constructing the heat exchanger in this way, in addition to the effect according to the second aspect, the fluid passage in the fluid plate of one laminated passage unit is formed on the header plate in the other laminated passage unit. By providing the fluid passages and the header through holes having different temperatures on the same plate, heat exchange by the plates is also performed, and heat exchange efficiency is improved accordingly.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be exemplarily described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative positions, and the like of the constituent parts described in this embodiment are not intended to limit the scope of the present invention thereto, unless otherwise specified, and are merely It is only an example.

FIG. 1 is a schematic configuration diagram showing a form of a first embodiment of a heat exchanger according to the present invention, and FIG. 2 is a schematic configuration diagram showing a form of a second embodiment of the heat exchanger according to the present invention. ,
FIG. 3 is a schematic configuration diagram showing a mode of a third embodiment of the heat exchanger according to the present invention, and FIGS. 4, 5, 6, and 7 are comparisons for explaining usefulness of the heat exchanger according to the present invention. It is the figure which showed the example.

In FIG. 1, reference numerals 1 and 4 denote header through holes 6, 7, 8, and 9 and fluid supply or discharge through holes 1.
Header plates 2 and 3 having 01, 102, 103 and 104 are fluid passages 10 and 11 and fluid plates having through holes 101, 102, 103 and 104 for supplying or discharging fluid. ,
4. When the fluid flow plates 2 and 3 are stacked to form a laminated flow passage unit, and the laminated flow passage units are further laminated to form a heat exchanger, the through holes 6 and 8 of the header plates 1 and 4 are formed. It is an intermediate plate for separating 7 and 9. 2, 20 and 23 are header through holes 24,
25, 26 and 27 and header plates having fluid supply or discharge through holes 105, 106, 107 and 108, 21 and 22 are fluid passages 28 and 29 and fluid supply or discharge through holes 105, 106 and 107, 10
8 is a plate for fluid having 8;

Reference numeral 30 in FIG. 3 denotes a through hole 3 for the header.
4, 35 and through holes 109 for supplying or discharging fluid,
Header plates 31 and 32 having 110 are through holes 36 and 37 for headers, flow paths 38 and 39 for fluid, and through holes 109, 110 and 111 for supplying or discharging fluid.
The plate for fluid 33 having 112, the through holes 109, 110, 111, 112 for supplying or discharging fluid, the header plate 30, the fluid plates 31, 32
When stacking the laminated flow path units constituted by, the through-holes for header 34, 35 provided in the header plate 30
And an intermediate plate for isolating the fluid flow path 39 of the fluid plate 32.

4 and 5, reference numerals 40 and 43 denote header through holes 45, 46, 47 and 48 and header plates having fluid supply or discharge through holes 201, 202, 203 and 204, and 41 and 44 denote fluid. Flow channel 49,
50 and through holes 201, 20 for fluid supply or discharge
A plate for fluid having 2, 203, 204, 42 is a header plate 40, 43, a plate for fluid 4
When forming a laminated channel unit by stacking 1 and 44, and further laminating the laminated channel unit to form a heat exchanger, the fluid channel 49 of the fluid plate 41 in FIG. 4 is formed.
And the through holes 47 and 48 of the header plate 43, the fluid flow path 50 of the fluid plate 44, and the header plate 40.
Through holes 45, 46, and the fluid flow path 49 of the fluid plate 41 and the fluid flow path 5 of the fluid plate 44 in FIG.
0 and the intermediate plates for separating the through holes 47, 48 of the header plate 43 and the through holes 45, 46 of the header plate 40, 60 and 62 in FIGS. 6 and 7, are the through holes 65, 66 and 67 for the header. , 68 and through holes 205, 206, 207, 208 for supplying or discharging fluid.
Header plates 61, 63 having a fluid passage 6
9, 70 and through holes 205 for fluid supply or discharge,
A fluid plate having 206, 207, 208, 64
Form a laminated channel unit by stacking these header plates 65 and 67 and fluid plates 61 and 63,
Further, when the heat exchanger is constructed by stacking the stacked flow path units, the fluid flow path 7 of the fluid plate 63 in FIG.
0 and the through holes 65 and 66 of the header plate 65, and the fluid passage 69 of the fluid plate 61 and the fluid passage 70 of the fluid plate 63 in FIG.

In the present invention, the header plate 1,
4, 20, 23, 30, header through-holes 6 to 9, 24 to 27, 34 to 37 for supplying and discharging the fluid in the fluid plate 31, the fluid plate 2,
The fluid channel 10 in 3, 21, 22, 31, 32,
11, 28, 29, 38, 39, intermediate plates 5, 3
3 and the fluid supply or discharge through holes 101 to 112 provided in each plate are not etched but
The heat exchanger is manufactured by punching by press working, and combining these plates by combining them as shown in (f) of FIGS. 1 to 3 to manufacture a heat exchanger. In this way, punching out the header through holes for supplying and discharging the fluid in the header plate, the fluid flow path in the fluid plate, and the fluid supply or discharge through hole provided in the intermediate plate and each plate By doing so, mass production can be achieved in a short time, the manufacturing cost can be reduced, and an inexpensive heat exchanger can be provided.

Before describing the present invention, in order to explain the usefulness of the present invention, FIGS. 4 to 7 were used and the flow passages and through holes in each plate were punched out, but these plates were simply prepared. A heat exchanger in the case of being configured by overlapping will be described as a comparative example. First, what is shown in FIG. 4 is a comparative example 1, and in this comparative example 1, header plates 40 and 43 in which header through holes 45 to 48 for fluid supply and fluid discharge are formed, and a fluid channel. The fluid plates 41 and 50 on which 49 and 50 are formed, and the intermediate plate 42 are combined and combined as shown in FIG. 4 (f) to form a laminated channel unit. That is, by enclosing the fluid channels 49, 50 in the fluid plates 41, 44 with the header plates 40, 43 and the intermediate plate 42, the fluid channels 49, 50 can be supplied or discharged through the through holes 201 to 204. Through the header through holes 45 to 48 in the header plates 40 and 43, a fluid such as a high temperature gas or a low temperature gas or a liquid can be poured and discharged from the header through hole at the other end. The header through holes 45 to 48 are connected to the fluid supply or discharge through holes 201 to 204 to supply and discharge the fluid.

In Comparative Example 2 shown in FIG. 5, the order of the header plate 43 and the fluid plate 44 shown in FIG. 4 is exchanged, and as shown in FIG. 5 (f), (c)
The fluid plate 44 shown in (d) is placed under the intermediate plate 42 shown in FIG. 4, and the header plate 43 shown in (e) is placed under the intermediate plate 42 shown in FIG.
And the fluid plate 44 shown in (d) is brought close to each other. By doing so, in Comparative Example 1 shown in FIG. 4, the fluid plate 41 shown in FIG.
The intermediate plate 42 between the fluid plate 44 shown in FIG.
And the header plate 43 exist, but in Comparative Example 2 of FIG. 5, only the intermediate plate 42 is provided, and heat exchange efficiency can be improved.

In Comparative Example 3 shown in FIG. 6, (a)
The header through-holes 65 and 66 in the header plate 60 shown in FIG.
In the header plate 60 shown in (a), the fluid passage 69 formed in the fluid plate 61 shown in (b) is formed so as to be located between the header through holes 67, 68. The length corresponds to the positions of the holes 65 and 66. Therefore, in Comparative Example 3, the fluid passage 69 of the fluid plate 61 and the header through holes 67 and 68 of the header plate 62 do not overlap with each other, and therefore, the fluid plate 61 shown in FIG. It is not necessary to sandwich the intermediate plate 64 between the header plate 62 shown in FIG.
As shown in (f) of FIG. 5, the header plate 62 shown in (c) can be directly disposed below the fluid plate 69 shown in (b), and the comparison shown in FIGS. Compared to Examples 1 and 2, the number of intermediate plates can be reduced by one.

In Comparative Example 4 shown in FIG. 7, the order of the header plate 62 and the intermediate plate 64 shown in FIG. 6 is exchanged, and as shown in FIG.
The intermediate plate 64 shown in (c) is placed below the fluid plate 61 shown in (4), and the fluid plate 63 shown in (d) is placed below it. However, in each of Comparative Examples 1 to 4 shown in FIGS. 4 to 7, an intermediate plate 42 or 62 is provided between the fluid plates 41 and 44, and 61 and 63, and a header plate 43 is further provided in Comparative Example 1. Due to the interposition, the heat exchange efficiency is poor. The present invention has been made in consideration of such points.

First, FIG. 1 is a schematic configuration diagram showing a mode of a first embodiment of a heat exchanger according to the present invention. In the first embodiment shown in FIG. 1, the fluid shown in (c) is used. The fluid channel 11 of the fluid plate 3 is provided at a position different from the fluid channel 10 of the fluid plate 2 shown in (b). And the fluid channel 1 of these fluid plates 2 and 3
The through-holes 6, 7, 8, 9 for the header for supplying or discharging the fluid to the fluids 0, 11 are the fluid channels 1 of the fluid plate 2.
As shown in FIG. 1A, the fluid supply or discharge through-holes 101 and 102 are excluded, and the fluid flow path 10 of the fluid plate 2 and the fluid supply or discharge through-holes 103 and 104 Is provided at a position capable of supplying or discharging, and for the fluid passage 11 of the fluid plate 3, as shown in FIG. 1D, the fluid supply or discharge through holes 103 and 104 can be removed and the fluid plate 3 can be removed.
Fluid channel 11 and through hole 10 for fluid supply or discharge
It is provided at a position where the fluid can be supplied to or discharged from the first and the second parts.

The plates 1 to 5 are shown in FIG.
As shown in (f), the stacked flow path unit is constructed by sequentially stacking and connecting the fluid flow paths 10 and 11 in the stacked flow path unit with the fluid supply or discharge through hole 1
Through the header through holes 6, 8, or 7 in the header plates 1, 4 through 01, 102, 103, 104,
A high temperature or low temperature gas, liquid, or other fluid is poured from 9 and discharged from the header through hole at the other end, so that heat exchange can be performed between the fluids. The through holes 6, 7, 8, 9 for the header
Are through holes 101, 102, 1 for fluid supply or discharge.
The fluid is supplied and discharged by being connected to 03 and 104.

The header plate 1 and the fluid plate 2, the fluid plate 3 and the header plate 4, and the intermediate plate 5 further constitute a laminated flow passage unit, and these laminated flow passage units are superposed and combined. As a result, for example, if a high temperature fluid is passed through one laminated channel unit and a low temperature fluid is passed through another laminated channel unit,
Since the cross-sectional dimensions of the fluid channels 10 and 11 are very small, it is possible to obtain a microchannel heat exchanger having a high heat transfer coefficient. Moreover, since the fluid channels 10 and 11 in the fluid plates 2 and 3 are formed at different positions when they are superposed, the fluid plates 2 and 3 are formed.
Is different from Comparative Examples 1 to 4S described above, and can be directly superposed without an intermediate plate or the like therebetween,
A heat exchanger with good heat exchange efficiency can be configured.

In the above description, since the header through-holes 6, 8 and 7, 9 in the header plates 1, 4 constituting the laminated flow path unit are arranged at the positions overlapping each other, the intermediate plate 5 in FIG. 1 is required. However,
By changing the arrangement of these through holes and the length of the fluid flow path, it is possible to configure an inexpensive heat exchanger having a higher heat exchange efficiency, which does not use the intermediate plate 5 in FIG. FIGS. 2 and 3 are diagrams for explaining the embodiment.

FIG. 2 shows a second embodiment of the present invention. In this second embodiment, the header through holes 26 and 27 in the header plate 23 shown in FIG. It was provided between the holes 24 and 25. The fluid passage 29 in the fluid plate 22 shown in (c) has a length corresponding to the position of the header through holes 26 and 27 in the header plate 23, and the fluid is supplied to the header through holes 26 and 27. Through holes 105 and 106 for supplying or discharging are provided at positions corresponding to the positions of the through holes 26 and 27 for the header, and these four plates are combined as shown in FIG. It was done. The header through holes 24 and 25 of the header plate 20 and the through holes 107 and 108 for supplying or discharging the fluid are the same as those in the first embodiment shown in FIG.

By constructing the laminated flow passage unit in this way, when the laminated flow passage units are further combined to form a heat exchanger, the header through holes 24, 26 in the header plate 20 and the header plate 23, Since 25 and 27 do not overlap each other, there is no need to use the intermediate plate 5 used in the first embodiment shown in FIG. 1, and the heat exchanger can be constructed at a low cost for one intermediate plate, and at the same time, the intermediate plate can be constructed. The heat exchange efficiency can be improved by omitting.

Next, FIG. 3 shows a third embodiment of the present invention. In this third embodiment, a plate 31 having header through holes 36 and 37 corresponding to the header plate shown by 25 in FIG. And a fluid passage 38 corresponding to the fluid passage 29 on the fluid plate 22 in FIG.
Of the fluid plate 32 is a plate 33 that is a through hole 109, 110, 111, 112 for supplying or discharging the fluid without the fluid channel 38 corresponding to the fluid channel 29. The fluid channel 39 was formed as a channel, and was also used as an intermediate plate for separating the header through holes 34 and 35 of the header plate 30 from the fluid channel 39. In the other configurations, as shown in FIG. 3F, the arrangement order of the plates is the header plate 30 corresponding to the header plate 23 in the second embodiment first, and then the header plate 20 in FIG. Fluid plate 3 corresponding to fluid plate 22
1 is arranged, and the third fluid plate 2 in FIG.
It is the same except that the fluid plate 32 corresponding to 1 is arranged.

By constructing the heat exchanger in this way, the heat exchanger can be constructed inexpensively for one intermediate plate described in the second embodiment, and the heat exchange efficiency can be improved by omitting the intermediate plate. In addition to the effect that it is possible, by providing the fluid passage in the fluid plate of one laminated passage unit on the header plate in the other laminated passage unit, the fluid passage and the header of different temperatures on the same plate Through holes are provided for heat exchange by the plate, and heat exchange efficiency is improved accordingly. Further, in these Examples 1 to 3, since the high temperature and low temperature fluid plates are in direct contact with each other, the heat exchange efficiency is better and the cost can be reduced as compared with Comparative Examples 1 to 4 described above.

[0033]

As described above, according to the present invention described in claims 1 and 4, the fluid passage of the fluid plate and the through hole of the header plate for supplying and discharging the fluid to the fluid passage. By producing the sheet by punching by pressing instead of etching, mass production can be achieved in a short time, the manufacturing cost can be reduced, and an inexpensive heat exchanger can be provided. Further, a position corresponding to a fluid channel provided on a fluid plate of one laminated channel unit between fluid channels on a fluid plate of another laminated channel unit that is coupled to this laminated channel unit. By providing in, it is possible to have a configuration in which the fluid plate in the high-temperature laminated channel unit and the low-temperature laminated channel unit are in direct contact with each other,
Since the fluid can flow as a counter flow, there is an advantage that high heat exchange performance can be obtained.

According to the second aspect of the present invention, since the fluid plates in the high temperature laminated flow passage unit and the low temperature laminated flow passage unit can be brought into direct contact with each other, the heat exchange efficiency is higher. When it can be used as a heat exchanger and all header through holes for supplying and discharging the fluid of the header plate in the laminated channel unit are provided at the same position and the fluid channels of the fluid plate have the same length. Compared with the above, the number of intermediate plates for separating the header plates can be reduced by one, and the heat exchanger can be constructed at low cost.

According to the invention described in claim 3, in addition to the effect according to claim 2, the fluid passage in the fluid plate of one laminated passage unit is replaced with the header plate in the other laminated passage unit. By providing it above, the fluid passages and header through-holes of different temperatures are provided on the same plate, and heat exchange is also performed by the plate, and heat exchange efficiency is improved accordingly.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a mode of a first embodiment of a heat exchanger according to the present invention.

FIG. 2 is a schematic configuration diagram showing a mode of a second embodiment of the heat exchanger according to the present invention.

FIG. 3 is a schematic configuration diagram showing a mode of a third embodiment of the heat exchanger according to the present invention.

FIG. 4 is a diagram showing Comparative Example 1 for explaining the usefulness of the heat exchanger according to the present invention.

FIG. 5 is a diagram showing Comparative Example 2 for explaining the usefulness of the heat exchanger in the present invention.

FIG. 6 is a diagram showing Comparative Example 3 for explaining the usefulness of the heat exchanger according to the present invention.

FIG. 7 is a diagram showing Comparative Example 4 for explaining the usefulness of the heat exchanger of the present invention.

FIG. 8 is a diagram for explaining a conventional heat exchanger manufacturing method.

[Explanation of symbols]

1 header plate 2 Fluid plate 3 Fluid plate 4 header plate 5 Intermediate plate 6 Through hole for header 7 Through hole for header 8 Through hole for header 9 Through hole for header 10 Fluid flow path 11 Fluid flow path 101 Fluid supply or discharge through hole 102 Fluid supply or discharge through hole 103 Fluid supply or discharge through hole 104 Through hole for fluid supply or discharge

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kenji Shinya             1-8-1 Sachiura, Kanazawa-ku, Yokohama             Industrial Technology Research Institute (72) Inventor Takayuki Goto             1-8-1 Sachiura, Kanazawa-ku, Yokohama             Industrial Technology Research Institute (72) Inventor Satoshi Tahara             1-8-1 Sachiura, Kanazawa-ku, Yokohama             Industrial Technology Research Institute

Claims (4)

[Claims] 1. A fluid plate formed by punching out a fluid flow path, and a through hole for a header, which is provided for supplying and discharging a fluid, corresponding to both ends of the fluid flow path of the fluid plate. In a heat exchanger in which a laminated flow passage unit formed by combining the above-mentioned header plate is prepared and combined for a high temperature fluid and a low temperature fluid, a fluid provided on the fluid plate in the one laminated flow passage unit. A flow channel for fluid is provided at a position different from that of the fluid flow channel provided on the fluid plate in the other laminated flow channel unit that couples the fluid flow channel to the one laminated flow channel unit; A heat exchanger characterized in that a low-temperature fluid is caused to flow through another laminated flow passage unit that is coupled to one laminated flow passage unit to perform heat exchange. 2. A header plate in another laminated flow channel unit in which a header through-hole provided in the header plate in the one laminated flow channel unit for supplying and discharging a fluid is coupled to the one laminated flow channel unit. It is provided at a position between the header through-holes provided for supplying and discharging the fluid, and the fluid passages of the fluid plates in the respective laminated passage units are arranged at the intervals of the corresponding header through-holes of the header plate. The heat exchanger according to claim 1, wherein the heat exchangers have corresponding lengths. 3. The fluid channel of the fluid plate of the one laminated channel unit is provided on a header plate of the other laminated channel unit, and each plate is a header plate of the one laminated channel unit. A header plate in the other laminated flow channel unit, a fluid plate in the other laminated flow channel unit, and a plate that has moved the fluid flow channel onto the header plate in the other laminated flow channel unit in this order. The heat exchanger according to claim 2, wherein the heat exchanger is configured as follows. 4. A fluid plate having a fluid flow path,
A laminated flow path unit is configured by combining with a header plate provided with a through hole for a header used for supplying and discharging a fluid flow path in the fluid flow plate. In a method for manufacturing a heat exchanger prepared for and combined with a fluid, a fluid flow path in a fluid plate of the one laminated flow path unit is connected to the one laminated flow path unit. Penetration for header that is created by punching at a position different from the fluid flow path in the fluid plate of the flow path unit, and that is used for supplying and discharging fluid corresponding to both ends of the fluid flow path in each fluid plate A hole is punched in the header plate to create a fluid plate in the one laminated channel unit and another laminated layer that is coupled to the laminated channel unit. A method for manufacturing a heat exchanger, characterized in that the heat exchanger is manufactured by overlapping and coupling the fluid plate of the flow path unit without using an intermediate plate for separating the flow path for the fluid.