JPH0478914B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laminate-type heat exchanger.

Conventional technology Conventional laminated plate heat exchangers are shown in Figs. 6 to 9, for example.
As shown in the figure, a heat transfer plate 2 formed by drilling groove-shaped fluid passages 21A and 21B in a thick flat plate.
2, or as shown in FIG. 10, a thin heat exchanger plate 33 and a template 32 having fluid passages 31A and 31B formed therethrough are laminated alternately, and the fluid passages 21A are formed on the front and rear surfaces of the template 32. , 21B or 31A, 31
Fluid supply nozzles 23A, 2 each communicating with B
4A and end plates 25 and 26 having fluid discharge nozzles 23B and 24B.

Problems to be Solved by the Invention According to the above configuration, the fluid passages 21A, 2 are provided in the flat plate.
To form 1B, etching, coining, or cutting is performed, but with the etching method, it is difficult to control the depth of the groove, and the material removed by etching is wasted. In addition, with the coining method, it is difficult to process deep grooves and it is difficult to create complex groove shapes. Furthermore, the method of cutting the groove portion takes too much time. Further, in order to provide the fluid passages 31A and 31B through the template 32, there is a limit to the manufacturing accuracy of the template 32, and there are disadvantages such as a large number of joints. Furthermore, in each of the above methods, the thickness of the heat exchanger plate is large, so the weight of the heat exchanger tends to be large.

The present invention solves the above-mentioned problems, and is a laminated plate heat exchanger that allows the heat exchanger plates to be easily processed, has fewer joints between the heat exchanger plates, and further reduces the weight of the heat exchanger. The purpose is to provide

Means for Solving the Problems In order to solve the above problems, the present invention provides a first heat transfer plate in which a flat plate is formed into an uneven shape by press working and provided with a groove-shaped heating fluid passage; a second heat transfer plate formed into an uneven shape by pressing and provided with a groove-shaped heated fluid passage in a plane symmetrical position to the first heat transfer plate and corresponding to the heated fluid passage; and the first heat transfer plate. a flat third heat exchanger plate interposed between the plate and the second heat exchanger plate, the first heat exchanger plate and the second heat exchanger plate having first recesses communicating with both ends of the respective fluid passages; The first heat exchanger plate and the second heat exchanger plate are provided so that their plane symmetrical positions are shifted, and second recesses are provided in the other second heat exchanger plate and the first heat exchanger plate, respectively, at the plane symmetrical position of the first recess. A through hole is provided at a third heat exchanger plate position corresponding to the first and second recesses, and a plurality of the first, third and second heat exchanger plates are stacked alternately and joined to each other. The structure is such that an independent heating fluid passage and heated fluid passage are formed.

Effect With the above configuration, the heated fluid passages of the first heat exchanger plates stacked alternately and the heated fluid passages of the second heat exchanger plates are provided in the first heat exchanger plate, respectively. a first recessed portion connected to the heated fluid passage; and an independent second recessed portion provided in the first heat exchanger plate.
They communicate with each other through the through holes of the recess and the through holes of the third heat exchanger plate, and in the second heat exchanger plate, a first recess and a first recess that are provided in the second heat exchanger plate and communicate with the heated fluid passage. The heating is communicated with each other through the through holes of the independent second recess provided in the heat exchanger plate and the through holes of the third heat exchanger plate, and is supplied to the through hole of the first recess of one of the first heat exchanger plates. The fluid is flowed from all the first recesses through the second recess of the second heat exchanger plate through the heated fluid passage of the first heat exchanger plate to the through hole of the other first recess,
Further, the fluid to be heated supplied to the through hole of one of the first recesses of the second heat exchanger plate heats the first heat exchanger plate from all the first recesses via the second recess of the first heat exchanger plate. The fluid passage is fluid that flows through the third heat exchanger plate, through the heated fluid passage of the second heat exchanger plate located at a plane symmetrical position, and into the through hole of the other first recess, and is connected to the third heat exchanger plate and to each other. Heat is exchanged through the contacting fluid passage bottoms.

Embodiment An embodiment of the present invention will be described below based on the drawings. Fig. 1 is an exploded perspective view of essential parts showing one embodiment of the present invention, Fig. 2 is an overall perspective view, Fig. 3 is a front sectional view, Fig. 4 is a sectional view shown in Fig. 3, and Fig. 5 The figure is a sectional view shown in FIG.

In Figures 1 to 5, 1 is a rectangular flat plate formed into a zigzag shape with groove-shaped heating fluid passages 2 of a constant depth spaced at regular intervals by press working, and 3 is a rectangular flat plate. is formed by pressing the first
A second heat exchanger plate 5 is formed with a groove-shaped heated fluid passage 4 having a constant depth corresponding to the heating fluid passage 2 at a plane symmetrical position with respect to the heat exchanger plate; The third heat exchanger plate is a rectangular flat plate interposed between the heat exchanger plate 3 and the first heat exchanger plate 1 and the second heat exchanger plate 3. Four recesses are provided at symmetrical positions, that is, the first heat exchanger plate 1 has a first recess that communicates with both ends of the heating fluid passage 2 on both outer sides thereof.
A heat exchanger plate first recess 6 and a first heat exchanger plate second recess 7 are provided inside them, and the second heat exchanger plate 3 is provided with a recess at a plane symmetrical position to the first heat exchanger plate second recess 7. a second heat transfer plate communicating with both ends of the heated fluid passage 4;
A recess 8 and a second recess 9 of the second heat exchanger plate are provided in a plane symmetrical position to the first recess 6 of the first heat exchanger plate, and the depths of the recesses 6, 7, 8, and 9 are set respectively. The depth of each of the recesses 6, 7, 8,
9, and the first heat exchanger plate 5 of the third heat exchanger plate.
The corresponding positions of the recess 6 and the second recess 9 of the second heat exchanger plate and the first
Through holes 10 are provided at corresponding positions of the second heat exchanger plate recess 7 and the second heat exchanger plate first recess 8, respectively.

In this heat exchanger 11, a plurality of first heat exchanger plates 1, third heat exchanger plates 5, and second heat exchanger plates 3 are alternately joined to form mutually independent heating fluid passages 2 and heated fluid passages 4. Furthermore, end plates 12A and 12B are provided on the front and rear surfaces of these laminates,
Furthermore, the first heat exchanger plate first recess 6 and the third heat exchanger plate 5
and the respective through holes 10 of the second recess 9 of the second heat exchanger plate.
A heated fluid supply nozzle 14A for supplying heated fluid to the heated fluid passage 2 through the communicating hole 13 on the heated fluid side formed by the front end plate 12A.
A heated fluid discharge nozzle 14B for discharging the heated fluid from the heated fluid passage 2 is installed on the rear end plate 1.
2B, and the first heat exchanger plate second
The fluid to be heated is supplied to the fluid to be heated passageway 4 through the communication hole 15 on the fluid to be heated side formed by the through holes 10 of the recess 7, the third heat exchanger plate 5, and the first recess 8 of the second heat exchanger plate. A heated fluid supply nozzle 16A for heating the heated fluid passage 4 is provided on the rear end plate 12B.
A heated fluid discharge nozzle 16B for discharging heated fluid from the front end plate 12A is provided.

Next, the operation of this heat exchanger 11 will be explained. The heating fluid is sent from the heating fluid supply nozzle 14A to the heating fluid passage 2 of each first heat exchanger plate 1 through one heating fluid side communication hole 13, and from the heating fluid passage 2 to the other heating fluid side communication hole 13. The heated fluid is discharged through the heated fluid discharge nozzle 14B. The heated fluid is sent from the heated fluid passage supply nozzle 16A through one heated fluid side communication hole 15 to the heated fluid passage 4 of each second heat transfer plate 3, and in the heated fluid passage 4, Heat is exchanged through the heat transfer plate 5 and the bottoms of the fluid passages 2 and 4 that are in contact with each other, and the heated fluid is discharged from the heated fluid passage 4 through the other heated fluid side communication hole 15 to the heated fluid discharge nozzle 16B.
is discharged from.

The above embodiment was an alternating current type in which the heated fluid flowed in the opposite direction to the heated fluid, but it was a parallel flow type in which the heated fluid and the heated fluid were flowed in the same direction. Good too.

Effects of the Invention As described above, according to the present invention, since a heat exchanger plate in which fluid passages are formed into a flat plate by press working is used, fluid passages can be easily provided in the heat exchanger plate. The joint area between the heat exchanger plate and the heat exchanger plate can be reduced, and the weight of the heat exchanger can also be reduced.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of essential parts showing one embodiment of the present invention, Fig. 2 is an overall perspective view thereof, Fig. 3 is a front sectional view thereof, and Fig. 4 is a sectional view shown in Fig. 3; Figure 5 is shown in Figure 3 - sectional view, Figure 6 - Figure 1
Fig. 0 shows a conventional example, Fig. 6 is an overall perspective view of the conventional example, Fig. 7 is a front sectional view thereof, Fig. 8 is a sectional view shown in Fig. 7, and Fig. 9 is shown in Fig. 7. −
10 is a partial plan sectional view showing another conventional example. DESCRIPTION OF SYMBOLS 1...First heat exchanger plate, 2...Heating fluid passage, 3...Second
Heat exchanger plate, 4... heated fluid passage, 5... third heat exchanger plate,
6...First recess of first heat exchanger plate, 7...Second recess of first heat exchanger plate, 8...First recess of second heat exchanger plate, 9...Second recess of second heat exchanger plate, 10...Through hole.

Claims (1)

[Claims] 1. A first heat exchanger plate in which a flat plate is formed into an uneven shape by press working and provided with groove-shaped heating fluid passages;
a second heat exchanger plate formed by pressing a flat plate into an uneven shape and provided with a groove-shaped heated fluid passage in a plane symmetrical position with respect to the first heat exchanger plate and corresponding to the heated fluid passage; a flat third heat exchanger plate interposed between the first heat exchanger plate and the second heat exchanger plate; 1 recess is provided with the plane symmetrical position shifted between the first heat exchanger plate and the second heat exchanger plate, and the other second heat exchanger plate and the first recess are provided at the plane symmetrical position of the first recess.
A second recess is provided in each heat exchanger plate, a through hole is provided at a third heat exchanger plate position corresponding to the first and second recesses, and the first and third heat exchanger plates and the second heat exchanger plate are alternately stacked. 1. A laminated plate heat exchanger characterized in that a plurality of heat exchangers are joined together to form mutually independent heated fluid passages and heated fluid passages.