JPH03251690A - Lamination type heat exchanger - Google Patents

Abstract

PURPOSE:To distribute fluid uniformly into respective grooves and improve heat exchanging performance remarkably by a method wherein spaces having rectangular opening consisting of long sides, longer than the inner diameter of an inlet tube, and short sides, shorter than the same, are provided in the title heat exchanger. CONSTITUTION:Fluid 2, entered from an inlet tube 6, is choked and dispersed into a space 15 when it has entered into the space 15 whereby the fluid 2 is dispersed uniformly into a header 10. The fluid 2, dispersed uniformly into the header 10, flows out while being distributed into grooves 14a, l4b and, thereafter, is collected by another header 12 and flows out of an outlet pipe 8 through another space 17. The other fluid 3 enters from another inlet pipe 7 and flows into another header 11 through the other space 16 and, thereafter, flows out of another outlet tube 9. The heat exchange of the different fluids 2, 3 is effected indirectly in the grooves 14a, 14b in respective heat exchanging plates 1, laminated by turning them by 90 deg. alternately.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a stacked heat exchanger used in air conditioning systems and the like.

Conventional technology Laminated heat exchangers are used to exchange heat between fluorocarbons, fluorocarbons and water, or water and water in air conditioning systems, etc. In recent years, with the diversification of air conditioning systems, the demand for them has increased. It's increasing.

Below, along with Figures 5 to 8, the conventional example (%
53794) will be explained.

Fig. 5 is a perspective view of a conventional stacked heat exchanger, Fig. 6 is a perspective view of a heat exchange plate, Fig. 7 is a sectional view taken along line B-B in Fig.
The figure is a sectional view taken along the line CC in FIG.

As shown in the figure, the conventional stacked heat exchanger consists of grooved heat exchange plates 1 that are stacked by rotating each plate 900 times.
The heat exchange plate 1 and the end plates 4 and 5 are brought into close contact with each other so that the fluids 2 and 3 do not leak from the grooves, and the inlet pipes 6 and 7 of the fluid 2 and the outlet pipe 8 are
, 9 were installed on the headers 10.degree.

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 from the outlet pipe 8. 7 is the inlet pipe for the other fluid 3, 11.13 is the header for the other fluid 3, and 9 is the outlet pipe for the other fluid 3. Rotate the heat exchange plates 1 by 90 degrees and stack them - each plate has a different fluid. 2 and 3 form a flowing structure.

Therefore, the grooves 14a and 14b serve as heat exchange parts, and heat exchange is performed between the different fluids 2 and 3 on both the upper and lower sides.

Problems to be Solved by the Invention However, in the above configuration, since the inlet pipe 6 and the header 10 are directly connected, a large amount of the fluid 2 flowing from the inlet pipe 6 flows into the groove 14a located near the line of the inlet pipe 6. There was a problem in that the fluid 2 was difficult to flow into the grooves 14b located far away on the inlet pipe 6 line, and the grooves 14b were not effectively utilized as heat transfer surfaces, resulting in a decrease in heat exchange performance.

In view of the above problems, the present invention improves heat exchange performance by uniformly branching fluid into valley grooves.

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 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 space is provided between the inlet pipe and the header and has a rectangular opening having a side longer than the inner diameter of the inlet pipe and a side shorter than the inner diameter of the inlet pipe.

Effects According to the present invention, with the above-described configuration, the fluid is diffused in the space between the fluid inlet pipe and the header, and the fluid can be uniformly distributed in the header, thereby allowing the fluid to flow uniformly into the valley groove. I can do it.

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. 1 is a sectional view taken along line A-A in FIG. 2, and FIG. 3 is a plate having a space constituting the laminated heat exchanger of the present invention. FIG. 4 is a front view showing the positional relationship between the inlet pipe, the outlet pipe, and the space.

As shown in the figure, in the stacked heat exchanger of the present invention, grooved heat exchange plates 1 are rotated 900 degrees each and stacked, and openings communicating with inlet pipes 6 and 7 are formed on the inlet pipes. A space portion 15.16 consisting of an area longer than the inner diameter and a shorter side S
The plate 19 having a
The inlet pipes 6 and 7 for the fluids 2 and 3 are tightly connected to prevent leakage.
It has a structure in which an outlet pipe 8.9 is attached.

The fluid 2 flowing in from the inlet pipe 6 flows into the energizing header 10 through the space 15, branches into grooves 14a and 14b, and flows out.

Then, it is collected by the other header 12 and flows out from the space 17 through the energized outlet pipe 8.

7 is the inlet pipe for the other fluid 3, 16.18 is the space on the side of the other fluid 3, 11.13 is the header for the other fluid 3, 9 is the outlet pipe for the other fluid, and the heat exchange plate 1 is rotated by 90 degrees. The structure is such that different fluids 2 and 3 flow through each stacked sheet. Therefore, the grooves 14a and 14b serve as heat exchange parts, and heat exchange is performed between the 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 is throttled when flowing into the space 16 and dispersed inside the space 15, and is uniformly dispersed in the header 10.

The fluid 2 uniformly dispersed in the header 10 flows through the grooves 14a.

14b, the 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 another device separated from the header. A plurality of heat exchange plates each having a header are laminated, and a rectangular opening having a side longer than the inner diameter of the inlet pipe and a side shorter than the inner diameter of the inlet pipe is formed between the inlet pipe and the header. The provision of the space allows the fluid to branch uniformly into the valley grooves, thereby significantly improving heat exchange performance.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main 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 view of the plates constituting the laminated heat exchanger. A perspective view, FIG. 4 is a front view of the same laminated heat exchanger, M6 is a perspective view of a conventional laminated heat exchanger, and FIG. 6 is a slanted view of the heat exchange plate making up the same laminated heat exchanger. 7 is a sectional view taken along line BB in FIG. 4, and FIG. 8 is a sectional view taken along line CC in FIG. 4. 1... Heat exchange plate, 4, 5... End plate, 6
, 7... Inlet pipe, 8, 9... Outlet pipe,
１０、１１、１２゜１３・・・・・・Header 1ea
, 14b...Groove, 15°16.17.18
・・・・・・Space part.

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 space is provided between the inlet pipe and the header and has a rectangular opening having a side longer than the inner diameter of the inlet pipe and a side shorter than the inner diameter of the inlet pipe. Laminated heat exchanger.