JPH05164493A - Plate type heat exchanger - Google Patents

Abstract

PURPOSE:To simply obtain a plate type heat exchanger in which seven or more plates so formed that no flow rate difference occurs between an upstream side and a downstream side are superposed even if a flow rate is not regulated by altering slot widths of heat exchanging fluid passages. CONSTITUTION:Flow rates of heat exchanging fluids flowing through a plurality of upstream and downstream side heat exchanging fluid passages 9a and 14a are so regulated as to become the same by altering diameters of communication passages 12a, 12b, 13a, 13b communicating with the plurality of heat exchanging fluid passages 9a, 14a in which the same heat exchanging fluids flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention uses an aluminum-based material and a plate material in which aluminum brazing material is clad on both sides,
Among the plate type heat exchangers used for the joined heat pump for cooling and heating, the oil cooler, etc., the heat exchange fluid flow passage in which the first heat exchange fluid flows, the heat exchange fluid in which the second heat exchange fluid flows from both sides. The present invention relates to the structure of a plate-type heat exchanger of the type in which heat is exchanged in a vessel flow path.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing a state of components before joining of a plate type heat exchanger of five sheets invented by the authors disclosed in Japanese Patent Application No. 3-15292. In the figure, 3 is a first heat exchange fluid inlet and 4 is a first heat exchange fluid outlet. 5 is a second heat exchange fluid inlet, and 6 is a second heat exchange fluid outlet. Reference numeral 8 is a first end plate, for example, an aluminum plate. Reference numeral 9 is a first intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. 9a
Is a first heat exchange fluid flow passage through hole continuously formed in the first intermediate plate in a range including the first fluid inlet 3, and from the outside to the inside in order to secure a large heat exchange area. It meanders to form a passage. Reference numeral 9b is a first through hole communicating with the second fluid outlet 6. A second end plate 10 is, for example, an aluminum plate. Reference numeral 11 denotes a second intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. 11a
Is a second through hole communicating with the second fluid outlet 4. Reference numeral 11b is a second heat exchange fluid flow passage through hole continuously formed in the second intermediate plate in a range including the second heat exchange fluid inlet 5, and is a first heat exchange fluid flow passage through hole. A passage is formed facing 9a. Reference numeral 12 is a heat exchange plate interposed between the first intermediate plate 9 and the second intermediate plate 11 for exchanging heat between the first heat exchange fluid A and the second heat exchange fluid B, which is, for example, an aluminum plate. ..
Reference numeral 12a is a third through hole provided in the heat exchange plate 12 for communicating the first through hole 9a for the first heat exchange fluid flow passage and the second through hole 11a, and 12b is the second through hole for the heat exchange fluid. Road through hole 11b and first through hole
It is a fourth through hole provided to communicate with 9b.

When these are assembled and manufactured, the first end plate 8, the first intermediate plate 9, the heat exchange plate 12, the second intermediate plate 11 and the second end plate 10 are sequentially superposed, When a brazing sheet is used for the first and second intermediate plates, they are brazed and fixed at once by brazing in a furnace.

FIG. 5 is a perspective view showing a state of components before joining of a plate heat exchanger of 7 plates which is a further development of the plate heat exchanger of 5 plates described above. In the figure, 3 is the inlet of the first heat exchange fluid A, and 4 is the outlet of the first heat exchange fluid A. Reference numeral 5 is a fluid inlet of the second heat exchange fluid B, and 6 is a fluid outlet of the second heat exchange fluid B. 8 is the first
End plate, for example, an aluminum plate. Reference numeral 9 is a first intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. Reference numeral 9a is a first heat exchange fluid flow passage through hole continuously formed in the first intermediate plate in a range including the second fluid inlets and outlets 6 and 5, and 9d communicates with the first fluid inlet 3. Each of the first through holes 9c is a second through hole that communicates with the first fluid outlet 4. A second end plate 10 is, for example, an aluminum plate. Reference numeral 11 denotes a second intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. 11
b is a fourth through hole communicating with the second fluid inlet 6, and 11a is a third through hole communicating with the second fluid outlet 5. 11d is second
Is a through hole for the second heat exchange fluid flow passage, which is continuously formed in the intermediate plate in a range including the first fluid inlets and outlets 4, 3. Reference numeral 14 denotes a third intermediate plate, which is, for example, a brazing sheet whose both surfaces are coated with a brazing material, and which is formed continuously in a range including the second fluid inlets and outlets 6 and 5 similar to the first intermediate plate 9. 3 has a heat exchange fluid flow passage through hole 14a. 12 is the first
The heat exchange plate, which is interposed between the intermediate plate 9 and the second intermediate plate 11 for exchanging heat between the first fluid A and the second fluid B, is, for example, an aluminum plate. 12b is a fourth through hole communicating with the second fluid inlet 6, and 12a is a third through hole communicating with the second fluid outlet 5. 12d is a first through hole that communicates with the first fluid inlet 3, and 12c is a second through hole that communicates with the first fluid outlet 4. Reference numeral 13 is a heat exchange plate interposed between the second intermediate plate 11 and the third intermediate plate 14 for exchanging heat between the first fluid A and the second fluid B, which is, for example, an aluminum plate. Reference numeral 13b is a fourth through hole communicating with the second fluid inlet 6, and 13a is a third through hole communicating with the second fluid outlet 5. The first through holes 9d and 12d have the same diameter, and the second through holes 9c and 1d have the same diameter.
2c are holes of the same diameter. Also, the third through holes 12a, 1
1a, 13a are holes of the same diameter, and the fourth through holes 12b, 11
b and 13b are holes of the same diameter.

As described above, each through hole is processed by a laser cutting machine or a turret punch press machine. When these are assembled and manufactured, the first end plate 8, the first intermediate plate 9, the first heat exchange plate 12, the second intermediate plate 11, the second heat exchange plate 13, and the third intermediate plate When the plate 14 and the second end plate 10 are sequentially polymerized and brazing sheets are used for the first, second and third intermediate plates, they are brazed and fixed at once by brazing in a furnace. When other members are used, they are integrated by brazing or an adhesive, but a good heat conductor such as an aluminum plate is used as the heat exchange plate.

Next, the operation will be described. First, the operation of the plate heat exchanger of five-ply stack shown in FIG. 4 will be described. The first heat exchange fluid A flows from the first heat exchange fluid inlet 3 to the first heat exchange fluid flow passage through hole 9a. Be guided. 2 here
The first fluid outlet through the second through hole 11a, which splits in the direction, meanders from the outside to the inside, and merges at the third through hole 12a.
Up to 4. In addition, the second heat exchange fluid B is the second heat exchange fluid at two locations.
From the heat exchange fluid inlet 5 to the second heat exchange fluid flow passage through hole 1
Guided to 1b. At this time, the second heat exchange fluid flow passage through hole
11b has a passage formed opposite to the through hole 9a for the first heat exchange fluid flow passage, and the second heat exchange fluid B has the first heat exchange fluid with the heat exchange plate 12 interposed therebetween. Exchange heat with A. After the heat exchange, the second heat exchange fluid B merges at the fourth through hole 12b and reaches the second heat exchange fluid outlet 6 through the first through hole 9b.

Next, the operation of the plate type heat exchanger of 7 sheets in FIG. 5 will be described. The first heat exchange fluid A passes from the first fluid inlet 3 through the first through holes 9d and 12d and is guided to the second heat exchange fluid flow passage through hole 11d. Here, it is divided into four, passes through the respective second through holes 12c and 9c, and reaches the first fluid outlet 4. Further, the second heat exchange fluid B passes from the second fluid inlet 6 to the first heat exchange fluid flow passage through hole 9a and then through the fourth through holes 12b, 11b, 13b, and the third heat exchange fluid. Guided to the fluid flow passage through hole 14a. At this time, a passage is formed in the second heat exchange fluid flow passage through hole 11b so as to face or orthogonal to the first and third heat exchange fluid flow passage through holes 9a, 14a. The heat exchange fluid A here exchanges heat with the second heat exchange fluid B from both sides via the heat exchange plates 12, 13. After the heat exchange, the second heat exchange fluid B becomes the fourth through holes 13a, 11a, 12a.
Through to the second fluid outlet 6.

[0008]

The conventional five-layer plate-type heat exchanger invented by the present inventors is such that the heat exchange amount between the first heat exchange fluid A and the second heat exchange fluid B is small. However, if a large amount of heat exchange is required, a plate type heat exchanger having 7 or 9 or more sheets is required. However, in a heat exchanger in which seven sheets or more sheets are stacked, the same heat exchange fluid flows through the first heat exchange fluid flow passage through hole 9a and the second heat exchange fluid flow passage through hole 14a. A flow rate difference is generated between the two, and the heat exchange efficiency of the plate-type heat exchanger as a whole decreases. Therefore, it is conceivable to adjust the flow rate by changing the groove widths of the through hole 9a for the heat exchange fluid flow passage and the through hole 14a for the second heat exchange fluid flow passage so that there is no flow rate difference. In this case, the same punching die cannot be used during punching, and the same machining program cannot be used for wire cutting or NC milling.

The present invention has been made to solve the above-mentioned problems, and the upstream side and the downstream side can be adjusted without changing the groove width of each heat exchange fluid flow passage to adjust the flow rate. It is an object of the present invention to obtain a plate-type heat exchanger in which seven or more sheets are stacked so that there is no flow rate difference.

[0010]

In the plate heat exchanger according to the present invention, an upstream heat exchange is performed by changing the diameter of a communication passage that connects a plurality of heat exchange fluid flow passages through which the same heat exchange fluid flows. The flow rate of the heat exchange fluid flowing through the fluid flow passage and the flow rate of the heat exchange fluid flowing through the downstream heat exchange fluid flow passage are adjusted to be the same.

[0011]

In the plate heat exchanger according to the present invention, the flow rate of the heat exchange fluid flowing through the upstream heat exchange fluid flow passage and the heat exchange fluid flowing through the downstream heat exchange fluid flow passage are changed by changing the diameter of the communication passage. Since the flow rate is adjusted to be the same, the flow rate can be easily adjusted without changing the groove width of the heat exchange fluid flow passage, improving the heat exchange efficiency of the plate-type heat exchanger as a whole and reducing the processing time. Also decreases.

[0012]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is an exploded perspective view of a plate heat exchanger with seven stacked plates showing a first embodiment of the present invention. In the figure, 3 is a fluid inlet of the first heat exchange fluid A, and 4 is a first fluid outlet. 5 is a fluid inlet of the second heat exchange fluid B, and 6 is a second fluid outlet. Reference numeral 8 is a first end plate, for example, an aluminum plate. Reference numeral 9 is a first intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. 9a is the first
9d is a first through hole for a heat exchange fluid flow passage, which is continuously formed in the intermediate plate of the intermediate plate in a range including the second fluid inlets and outlets 6, 5.
A first through hole communicating with the fluid inlet 3 of the first fluid inlet 3 and having the same diameter as the first fluid inlet 3, and 9c each communicating with the first fluid outlet 4 and having the same diameter as the first fluid outlet 4. It is a second through hole. A second end plate 10 is, for example, an aluminum plate. 11
Is a second intermediate plate, for example, a brazing sheet whose both surfaces are coated with a brazing material. 11b is the second fluid inlet 6
A fourth through hole that communicates with and has the same diameter as the second fluid inlet 6. Reference numeral 11a is a third through hole communicating with the second fluid outlet 5, and has the same diameter as the second fluid outlet 5. Reference numeral 11d is a second heat exchange fluid flow passage through hole which is continuously formed in the second intermediate plate in a range including the first fluid inlets and outlets 4,3. Reference numeral 14 denotes a third intermediate plate, which is, for example, a brazing sheet whose both surfaces are coated with a brazing material, and which is formed continuously in a range including the second fluid inlets and outlets 6 and 5 similar to the first intermediate plate 9. 3 has a heat exchange fluid flow passage through hole 14a. Reference numeral 12 denotes a heat exchange plate which is interposed between the first intermediate plate 9 and the second intermediate plate 11 to exchange heat between the first fluid A and the second fluid B, and is, for example, an aluminum plate. 12b communicates with the second fluid inlet 6,
A fourth through hole 12a having the same diameter as the second fluid inlet 6 and a third through hole 12a communicating with the second fluid outlet 5 have the same diameter as the second fluid outlet 5. 12d communicates with the first fluid inlet 3, a first through hole having the same diameter as the first fluid inlet 3, and 12c communicates with the first fluid outlet 4 and the same as the first fluid outlet 4. It is a second through hole having a diameter. Reference numeral 13 is a heat exchange plate interposed between the second intermediate plate 11 and the third intermediate plate 14 for exchanging heat between the first fluid A and the second fluid B, which is, for example, an aluminum plate.

In this embodiment, the through holes 9c, 9d, 12c, 12d are the first communication passages through which the first heat exchange fluid A flows,
The through holes 12a, 12b, 11a, 11b, 13a, 13b are second communication passages through which the second heat exchange fluid B flows. The diameter of the fourth through hole 13b communicating with the second fluid inlet 6 is set to the first heat exchange fluid flow passage through hole 9a and the second heat exchange fluid flow passage through hole.
2nd so that each flow rate flowing through 14a is the same.
Is smaller than the diameter of the fluid inlet 6, and the third through hole 13a communicating with the second fluid outlet 5 has the same diameter as the second fluid outlet 5. The first through holes 9d and 12d have the same diameter, and the second through holes 9c and 12c also have the same diameter. Also, the third through holes 12a, 11a, 13a are holes of the same diameter, the fourth through holes 12b, 11b are also holes of the same diameter, and the diameter of only the fourth through hole 13b is reduced. is there.

As described above, each through hole is processed by a laser cutting machine or a turret punch press machine. When these are assembled and manufactured, the first end plate 8, the first intermediate plate 9, the first heat exchange plate 12, the second intermediate plate 11, the second heat exchange plate 13, and the third intermediate plate When the plate 14 and the second end plate 10 are sequentially polymerized and brazing sheets are used for the first, second and third intermediate plates, they are brazed and fixed at once by brazing in a furnace. When other members are used, they are integrated by brazing or an adhesive, but a good heat conductor such as an aluminum plate is used as the heat exchange plate.

Next, the operation of the plate heat exchanger having seven plates stacked, which is an embodiment of the present invention, will be described. The first fluid A passes from the first fluid inlet 3 through the first through holes 9d and 12d and is guided to the second heat exchange fluid flow passage through hole 11d. Here, it is divided into four, passes through the respective second through holes 12c and 9c, and reaches the first fluid outlet 4. Further, the second fluid B flows from the second fluid inlet 6 to the first heat exchange fluid flow passage through hole 9a.
Through and through the fourth through holes 12b, 11b,
The flow rate is throttled by 13b, the pressure loss in this portion increases, and the flow rate is guided to the third heat exchange fluid flow passage through hole 14a and the flow rate through the first heat exchange fluid flow passage through hole 9a. Will be the same. At this time, the second heat exchange fluid flow passage through hole 11b
Has a passage formed opposite or orthogonal to the through holes 9a, 14a for the first and the third heat exchange fluid flow passages, and the first fluid A is here passed through the heat exchange plates 12, 13 on both sides. To heat exchange with the second fluid B. After heat exchange, the second fluid B has a fourth through hole.
It passes through 13a, 11a and 12a and reaches the fluid outlet 6 of 2.

Example 2. In the first embodiment, the fourth through hole
Although the pressure loss was provided and the flow rate was adjusted by reducing the diameter of 13b, the diameter of any one of the third through holes 12a, 11a, and 13a was reduced, or the fourth through hole other than 13b was used.
The same effect can be obtained by reducing the diameter of any one of the through holes 12b and 11b. FIG. 2 showing the second embodiment shows that the diameter of the third through hole 13a is reduced and the flow rate introduced into the third through hole 14a for the heat exchange fluid flow passage and the first heat exchange fluid flow passage are shown. The flow rates through the through holes 9a are the same.

Embodiment 3. In addition, in the above-mentioned Embodiments 1 and 2, the plate heat exchanger having seven stacked plates is shown, but as shown in FIG. 3, for example, it can be applied to a plate heat exchanger having eleven stacked plates. In the figure, 15 and 18 are heat exchange plates, 16 is an intermediate plate having a heat exchange fluid flow passage 16d through which the first heat exchange fluid A flows, and 17 is a heat exchange fluid flow passage through which the second heat exchange fluid B flows.
It is an intermediate plate having 17a. Also, through holes 9c, 9d, 12c, 12
Reference numerals d, 13c, 13d, 14c, 14d, 15c, 15d are first communication passages through which the first heat exchange fluid A flows, and the through holes 12a, 12b, 11
a, 11b, 13a, 13b, 15a, 15b, 16a, 16b, 18a, 18b are second communication passages through which the second heat exchange fluid B flows. In this example, the flow rate through the first heat exchange fluid flow passage through hole 9a, the flow rate through the third heat exchange fluid flow passage through hole 14a and the fifth heat exchange fluid flow passage 17a. The diameter of the fourth through hole 13b is made smaller than that of the fourth through holes 12b, 11b so that the flow rates are the same, and the diameter of the fourth through hole 18b is made smaller than that of the fourth through hole 13b.
Making it smaller.

In the third embodiment, the fourth through hole 13
Although the pressure loss was provided and the flow rate was adjusted by reducing the diameters of b and 18b, the diameter of any one of the third through holes 12a, 11a, 13a and 15a should be reduced, or 13b 18b
The same effect can be obtained by reducing the diameter of any one of the fourth through holes 12b and 11b other than the above.

As described above, the same effect can be obtained with a similar idea even in a plate type heat exchanger in which seven or more sheets are stacked.

[0020]

As described above, according to the present invention, the upstream heat exchange fluid flow passage is formed by changing the diameter of the communication passage that connects the plurality of heat exchange fluid flow passages through which the same heat exchange fluid flows. Since the flow rate of the heat exchange fluid and the flow rate of the heat exchange fluid flowing through the downstream heat exchange fluid flow passage are adjusted to be the same, the flow rate can be easily changed without changing the groove width of each heat exchange fluid flow passage. Can be adjusted, and the heat exchange efficiency of the plate-type heat exchanger as a whole can be improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a plate type heat exchanger having seven stacked plates according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a plate type heat exchanger having seven stacked plates according to a second embodiment of the present invention.

FIG. 3 is an exploded perspective view showing an 11-layer plate type heat exchanger according to a third embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a conventional five-plate plate heat exchanger.

FIG. 5 is an exploded perspective view showing a conventional plate heat exchanger having seven stacked plates.

[Explanation of symbols]

 8 First End Plate 9 First Intermediate Plate 10 Second End Plate 11 Second Intermediate Plate 12 First Heat Exchange Plate 13 Second Heat Exchange Plate 14 Third Intermediate Plate 13b Fourth Through Hole 15 Third heat exchange plate 16 Fourth intermediate plate 17 Fourth heat exchange plate 17b Fourth through hole 18 Fourth heat exchange plate

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[Procedure amendment]

[Submission date] May 12, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

FIG. 5 is a perspective view showing a state of components before joining of a plate heat exchanger of 7 plates which is a further development of the plate heat exchanger of 5 plates described above. In the figure, 3 is the inlet of the first heat exchange fluid A, and 4 is the outlet of the first heat exchange fluid A. Reference numeral 5 is a fluid inlet of the second heat exchange fluid B, and 6 is a fluid outlet of the second heat exchange fluid B. 8 is the first
End plate, for example, an aluminum plate. Reference numeral 9 is a first intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. Reference numeral 9a is a first heat exchange fluid flow passage through hole continuously formed in the first intermediate plate in a range including the second fluid inlets and outlets 6 and 5, and 9d communicates with the first fluid inlet 3. Each of the first through holes 9c is a second through hole that communicates with the first fluid outlet 4. A second end plate 10 is, for example, an aluminum plate. Reference numeral 11 denotes a second intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. 11
Reference numeral b is a fourth through hole communicating with the second fluid inlet 5, and 11a is a third through hole communicating with the second fluid outlet 6 . 11d is second
Is a through hole for the second heat exchange fluid flow passage, which is continuously formed in the intermediate plate in a range including the first fluid inlets and outlets 4, 3. Reference numeral 14 denotes a third intermediate plate, which is, for example, a brazing sheet whose both surfaces are coated with a brazing material, and which is formed continuously in a range including the second fluid inlets and outlets 6 and 5 similar to the first intermediate plate 9. 3 has a heat exchange fluid flow passage through hole 14a. 12 is the first
The heat exchange plate, which is interposed between the intermediate plate 9 and the second intermediate plate 11 for exchanging heat between the first fluid A and the second fluid B, is, for example, an aluminum plate. 12b is a fourth through hole communicating with the second fluid inlet 5, and 12a is a third through hole communicating with the second fluid outlet 6 . 12d is a first through hole that communicates with the first fluid inlet 3, and 12c is a second through hole that communicates with the first fluid outlet 4. Reference numeral 13 is a heat exchange plate interposed between the second intermediate plate 11 and the third intermediate plate 14 for exchanging heat between the first fluid A and the second fluid B, which is, for example, an aluminum plate. Reference numeral 13b is a fourth through hole that communicates with the second fluid inlet 5, and 13a is a third through hole that communicates with the second fluid outlet 6 . The first through holes 9d and 12d have the same diameter, and the second through holes 9c and 1d have the same diameter.
2c are holes of the same diameter. Also, the third through holes 12a, 1
1a and 13a are holes having the same diameter, and the fourth through holes 12b and 11a
b and 13b are holes of the same diameter.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

Next, the operation of the plate type heat exchanger of 7 sheets in FIG. 5 will be described. The first heat exchange fluid A passes from the first fluid inlet 3 through the first through holes 9d and 12d and is guided to the second heat exchange fluid flow passage through hole 11d. Here, it is divided into four, passes through the respective second through holes 12c and 9c, and reaches the first fluid outlet 4. Further, the second heat exchange fluid B passes from the second fluid inlet 5 to the first heat exchange fluid flow passage through hole 9a, and then through the fourth through holes 12b, 11b, 13b, and the third heat exchange fluid. Guided to the fluid flow passage through hole 14a. At this time, a passage is formed in the second heat exchange fluid flow passage through hole 11b so as to face or orthogonal to the first and third heat exchange fluid flow passage through holes 9a, 14a. The heat exchange fluid A here exchanges heat with the second heat exchange fluid B from both sides via the heat exchange plates 12, 13. After the heat exchange, the second heat exchange fluid B becomes the fourth through holes 13a, 11a, 12a.
Through to the second fluid outlet 6.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

[0012]

EXAMPLES Example 1. An embodiment of the present invention will be described below with reference to the drawings. First Embodiment FIG. 1 is an exploded perspective view of a plate heat exchanger with seven stacked plates showing a first embodiment of the present invention. In the figure, 3 is a fluid inlet of the first heat exchange fluid A, and 4 is a first fluid outlet. 5 is a fluid inlet of the second heat exchange fluid B, and 6 is a second fluid outlet. Reference numeral 8 is a first end plate, for example, an aluminum plate. Reference numeral 9 is a first intermediate plate, which is, for example, a brazing sheet having both surfaces coated with a brazing material. 9a is the first
9d is a first through hole for a heat exchange fluid flow passage, which is continuously formed in the intermediate plate of the intermediate plate in a range including the second fluid inlets and outlets 6, 5.
A first through hole communicating with the fluid inlet 3 of the first fluid inlet 3 and having the same diameter as the first fluid inlet 3, and 9c each communicating with the first fluid outlet 4 and having the same diameter as the first fluid outlet 4. It is a second through hole. A second end plate 10 is, for example, an aluminum plate. 11
Is a second intermediate plate, for example, a brazing sheet whose both surfaces are coated with a brazing material. 11b is the second fluid inlet 5
A fourth through hole that communicates with and has the same diameter as the second fluid inlet 6 . Reference numeral 11a is a third through hole communicating with the second fluid outlet 5, and has the same diameter as the second fluid outlet 5. Reference numeral 11d is a second heat exchange fluid flow passage through hole continuously formed in the second intermediate plate in a range including the first fluid inlets and outlets 4,3. Reference numeral 14 denotes a third intermediate plate, which is, for example, a brazing sheet whose both surfaces are coated with a brazing material, and which is formed continuously in a range including the second fluid inlets and outlets 6 and 5 similar to the first intermediate plate 9. 3 has a heat exchange fluid flow passage through hole 14a. Reference numeral 12 is a heat exchange plate interposed between the first intermediate plate 9 and the second intermediate plate 11 for exchanging heat between the first fluid A and the second fluid B, which is, for example, an aluminum plate. 12b communicates with the second fluid inlet 5 ,
Fourth hole having the same diameter as the second fluid inlet 5, 12a is a third through hole which communicates with the second fluid outlet 6, with the same diameter as the second fluid outlet 6. 12d communicates with the first fluid inlet 3, a first through hole having the same diameter as the first fluid inlet 3, and 12c communicates with the first fluid outlet 4 and the same as the first fluid outlet 4. It is a second through hole having a diameter. Reference numeral 13 is a heat exchange plate interposed between the second intermediate plate 11 and the third intermediate plate 14 for exchanging heat between the first fluid A and the second fluid B, which is, for example, an aluminum plate.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction content]

In this embodiment, the through holes 9c, 9d, 12c, 12d are the first communication passages through which the first heat exchange fluid A flows,
The through holes 12a, 12b, 11a, 11b, 13a, 13b are second communication passages through which the second heat exchange fluid B flows. The diameter of the fourth through hole 13b communicating with the second fluid inlet 5 is set to be the same as the through hole 9a for the first heat exchange fluid flow passage and the through hole for the second heat exchange fluid flow passage.
2nd so that each flow rate flowing through 14a is the same.
Yes is set smaller than the diameter of the fluid inlet 5, the third through holes 13a in communication with a second fluid outlet 6 are the same diameter as the second fluid outlet 6. The first through holes 9d and 12d have the same diameter, and the second through holes 9c and 12c also have the same diameter. Also, the third through holes 12a, 11a, 13a are holes of the same diameter, the fourth through holes 12b, 11b are also holes of the same diameter, and the diameter of only the fourth through hole 13b is reduced. is there.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction content]

Next, the operation of the plate heat exchanger having seven plates stacked, which is an embodiment of the present invention, will be described. The first fluid A passes from the first fluid inlet 3 through the first through holes 9d and 12d and is guided to the second heat exchange fluid flow passage through hole 11d. Here, it is divided into four, passes through the respective second through holes 12c and 9c, and reaches the first fluid outlet 4. Further, the second fluid B passes from the second fluid inlet 5 to the first heat exchange fluid flow passage through hole 9a.
Through and through the fourth through holes 12b, 11b,
The flow rate is throttled by 13b, the pressure loss in this portion increases, and the flow rate is guided to the third heat exchange fluid flow passage through hole 14a and the flow rate through the first heat exchange fluid flow passage through hole 9a. Will be the same. At this time, the second heat exchange fluid flow passage through hole 11b
Has a passage formed opposite or orthogonal to the through holes 9a, 14a for the first and the third heat exchange fluid flow passages, and the first fluid A is here passed through the heat exchange plates 12, 13 on both sides. To heat exchange with the second fluid B. After heat exchange, the second fluid B has a fourth through hole.
It passes through 13a, 11a, 12a and reaches the second fluid outlet 6.

[Procedure correction 6]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 7]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

[Procedure Amendment 8]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

[Procedure Amendment 9]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

Claims (1)

[Claims] 1. A laminated body in which a plurality of intermediate plates having heat exchange fluid flow passages are laminated with the heat exchange plates interposed between the end plates, and a plurality of heat exchange fluid flow passages for the intermediate plates are provided. While communicating the first heat exchange fluid through the communication passage of 1,
In the plate heat exchanger configured to allow the second heat exchange fluid to flow by communicating the heat exchange fluid flow passages of the remaining intermediate plates with the second communication passages, by changing the diameter of the communication passages. A plate-type heat exchanger, characterized in that the flow rate of the heat exchange fluid flowing through the upstream heat exchange fluid flow passage and the flow rate of the heat exchange fluid flowing through the downstream heat exchange fluid flow passage are adjusted to be the same.