JPH03214000A - Laminated heat exchanger - Google Patents

Abstract

PURPOSE:To make fluid flow evenly in each groove for improving heat exchanging capacity, by providing a fluid inlet pipe at a position displaced from a line of headers which communicate with plural grooves through which the fluid flows. CONSTITUTION:A number of heat exchanging plates 1 are laminated with each rotating by 90 deg. from an adjacent one, a fluid scattering plate 15 having spaces 16-19 to communicate with inlet pipes 6, 7 and outlet pipes 8, 9, and holes 20-23 to communicate with headers 10-13 is placed on one side of the laminated plates 1, and further an end plate 24, 25 is placed on the plate 15 and the other side of the laminated plates 1. These plates 1, 15, 24 and 25 are all fastened to each other intimately enough not to permit any leakage of fluid 2, 3. The inlet and outlet pipes 6, 7, 8 and 9 are all mounted on the end plate 24. The fluid 2 entering from the inlet pipe 6 collides against the wall of the space 16 to scatter, and further collides against the wall of the header 10 to scatter and scatter evenly all the way into grooves 14a, 14b. In this constitution, as the inlet pipe 6 is provided at a position displaced from the header line, the fluid can be scattered evenly into each of the grooves 14a and 14b, and therefore the heat exchanging capacity can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a laminated heat exchanger used in air conditioning systems, etc. Conventional technology laminated heat exchangers are used in air conditioning systems, etc. It is used to exchange heat between water and water, and demand for it has increased in recent years as air conditioning systems have become more diverse.

Below, along with Figures 4 to 7, the conventional example (Unexamined Japanese Patent Publication No. 60-2
53794) will be explained.

Fig. 4 is a perspective view of a conventional stacked heat exchanger, Fig. 6 is a perspective view of a heat exchange plate, Fig. 6 is a sectional view taken along line B-B in Fig. 4, and Fig.
The figure is a sectional view taken along the line CC in FIG. 4.

As shown in the figure, the conventional stacked heat exchanger consists of grooved heat exchange plates 1 that are stacked by rotating each plate by 90°.
The heat exchange plate 1 and the end plates 4 and 6 are brought into close contact with each other so that the fluid 2.3 does not leak from the groove, and the inlet pipe 6. End and exit pipe 8
．． 9 was provided on the header 10°11.12.13 line, and the inlet pipe 6.7 and the header 10.11 were directly connected.

The fluid 2 flowing in from the inlet pipe 6 enters the header 10, branches into grooves 14a and 14b, and flows out. Then, it is collected by the other header 12 and flows out through the outlet pipe 8. 7 is an inlet pipe for the other fluid 3, 11.13 is a header for the other fluid 3, and 9 is an outlet pipe for the other fluid 3.The heat exchange plate 1 is rotated by 90 degrees, and each stacked plate is filled with a different fluid. 2.3 becomes a flowing structure.

Therefore, the grooves 14a and 14b serve as heat exchange parts, and heat exchange is performed between the different fluids 2.3 on both the upper and lower sides.

Problems to be Solved by the Invention However, in the above configuration, the inlet pipe 6 is provided on the line of the header 10, and the inlet pipe 6 and the header 1o are directly connected. A large amount of fluid 2 flows into the groove 14a located near the line of the pipe 6, and it becomes difficult for the fluid 2 to flow into the groove 14b further away on the line of the inlet pipe 6.
4b was not effectively utilized as a heat transfer surface, resulting in a decrease in heat exchange performance.

In view of the above-mentioned problems, the present invention improves heat exchange performance by uniformly branching the fluid.

Means for Solving the Problems In order to solve the above problems, the laminated heat exchanger of the present invention has the following features:
A heat exchange plate comprising an end plate having an inlet pipe and an outlet pipe for fluid, a plurality of grooves through which a fluid flows, a header communicating with the grooves, and another header separated from the header. A plurality of sheets are stacked, and the inlet pipe is provided at a position offset from the ladder line.

Operation According to the present invention, with the above-described configuration, the fluid can be uniformly distributed in the header, and the fluid can be uniformly flowed to the image area.

EXAMPLE Hereinafter, a stacked heat exchanger according to an example of the present invention will be explained with reference to the drawings.

Fig. 2 is a perspective view of the laminated heat exchanger of the present invention, Fig. 3 is a plan view of a fluid diffusion plate constituting the laminated heat exchanger of the present invention, and Fig. 1 is a sectional view taken along line A in Fig. 2. It is.

As shown in the figure, in the stacked heat exchanger of the present invention, grooved heat exchange plates 1 are rotated 90' each and stacked, and then an inlet pipe 6.7 and an outlet pipe 8.9 are stacked on top of each other. Communicating spaces 16, 17, 18, 19 and headers 10, 11, 12.
The fluid diffusion plate 16 having holes 20, 21, 22, 23 communicating with the fluid 2.3 and the end plates 24, 26 are stacked and brought into close contact so that the fluids 2, 3 do not leak, and the inlet pipe 6.7 of the fluid 2.3 is It has a structure in which outlet pipes 8 and 9 are attached.

The fluid 2 flowing in from the inlet pipe 6 enters the space 16. It flows into the header 10 through the hole 20 and into the groove 14a.

14b and flows out. and the other header 1
Collected in 2 holes 22. It passes through the space 18 and flows out from the outlet pipe 8. 17.19 is the space on the other fluid 3 side. 21.23 is the hole on the other fluid 3 side. 11.13 is the header for other fluid 3. 9 is the outlet pipe for other fluid. , the heat exchange plates 1 are rotated by 90° and stacked to form a structure in which a different fluid 2.3 flows through each plate. Therefore, the grooves 14a, 1
4b is a heat exchange section, which performs heat exchange between different fluids 2 and 3 on both the upper and lower sides.

In this embodiment, the fluid 2 flowing in from the inlet pipe 6 flows into the space 1.
When it flows into the hole 20, it collides with the wall surface of the space 16 and is dispersed, and furthermore, when it flows into the header 10 through the hole 20, it collides with the wall surface of the hole 20 and the header 10, and is dispersed, and is uniformly dispersed in the header 10. . Since the fluid 2 uniformly dispersed in the header 10 can be uniformly branched into the grooves 14a and 14b, heat exchange performance can be improved.

Effects of the Invention As described above, the present invention provides an end plate having an inlet pipe and an outlet pipe for fluid, a plurality of grooves through which a fluid flows, a header communicating with the grooves, and the header and the header are separated from each other. By stacking a plurality of heat exchange plates equipped with other headers and placing the inlet pipe at a position offset from the header line, it is possible to branch the fluid uniformly to the image area. , heat exchange performance can be significantly improved.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a sectional view of essential parts of a laminated heat exchanger according to an embodiment of the present invention, Fig. 2 is a perspective view of the laminated heat exchanger, and Fig. 3 is a perspective view of the laminated heat exchanger. Plan view of the fluid diffusion plate constituting the exchanger, No. 4
The figure is a perspective view of a conventional laminated heat exchanger, Figure 6 is a perspective view of a heat exchange plate constituting the same laminated heat exchanger, Figure 6 is a sectional view taken along line BB in Figure 4, and Figure 7. is a cross-sectional view of Figure 4 (C). 1°°゛゛Heat exchange plate, 6.7 Inlet pipe,
,11゜12.13...Hera p''-124,2
5 peaks...end plate, 14a, 14b...-groove.

Claims (1)

[Claims] A plurality of heat exchange plates each having an end plate having an inlet pipe and an outlet pipe for fluid, a plurality of grooves through which a fluid flows, a header communicating with the grooves, and another header separated from the header. A stacked heat exchanger characterized in that the stacked heat exchanger is stacked, and the inlet pipe is provided at a position offset from above the header line.