JPH0443295A - Lamination type heat exchanger - Google Patents

Abstract

PURPOSE:To branch fluid uniformly into respective grooves and improve heat exchanging performance remarkably by providing a plurality of fluid discharging holes on the inlet tube of the fluid, which is inserted into a header. CONSTITUTION:A lamination type heat exchanger is constituted of heat exchanging plates l, provided with grooves and laminated one by one so as to be turned by 90 deg., while terminal plates 4, 5 are contacted closely with the heat exchanging plates 1 so as not to leak fluids 2, 3 from the grooves and one part of the inlet tubes 15, 16 of the fluids 2, 3 are inserted into headers 10, 11 while a plurality of holes 17 are provided on entrance tubes 15, 16 so as to be capable of discharging the fluids 2, 3. The fluid 2 flows into the entrance tube 15 inserted into the header 10 and is discharged into the header 10 through the plurality of holes 17 of the entrance tube 15. Accordingly, the fluid 2 is dispersed uniformly into the header 10 and is branched uniformly into the grooves 14a, 14b whereby the improvement of heat exchanging performance can be contrived.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application 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 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 A-A in Fig. 4, and Fig. 7 is a -B-- It is a sectional view of B.

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'.
Heat exchange plate 1 and end plate 4 are installed to prevent fluid 2.3 from leaking from the groove.
, 6 in close contact with each other, and the inlet pipe 6.7 of the fluid 2.3 and the outlet pipe 8
．． 9 was provided on the header 10°11.12.13 line.

The fluid 2 flowing from the inlet pipe 6 enters the header 10, branches into grooves 14a and 14b, and flows into the bath. Then, to the other side, it is collected by the dar 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 plates 1 are rotated by s o O and stacked one by one for a different fluid 2. 3 becomes a flowing structure.

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

Problems to be Solved by the Invention However, in the above configuration, a large amount of the fluid 2 flowing from the inlet pipe 6 flows into the groove 14a near the inlet pipe 6, and a large amount of the fluid 2 flows into the groove 14b distal to the inlet pipe 6. There was a problem that the grooves 14b were not effectively utilized as a heat transfer surface, 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 six 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 portion of the inlet pipe is inserted into the header, and the inlet pipe inserted into the header is provided with a plurality of holes for discharging fluid.

Function The present invention can uniformly distribute the fluid inside the header with the above-described configuration, and can evenly flow the fluid into the six grooves.

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 CC in FIG. 2, and FIG. 3 is a sectional view taken along line DD in FIG. 2.

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 the heat exchange plates 1 are stacked to prevent fluids 2 and 3 from leaking from the grooves. and the end plates 4 and 6 are brought into close contact with each other, and the inlet pipe 15.16 of the fluid 2.3 is
Insert a part of the header 10 into the inside of the inlet pipe 1.
5.16 is provided with a plurality of holes 17 through which fluid 2.3 can be discharged.

The fluid 2 flowing in from the inlet pipe 16 is discharged from a plurality of holes 17 provided in the inlet pipe 15, 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. 16 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 plates 1 are rotated 900 times each and different fluids 2 and 3 are stacked on each plate. It becomes a flowing structure. Therefore, the grooves 14a, 1
4b is a heat exchange section, which performs heat exchange between different fluids 2.3 on both the upper and lower sides.

In this embodiment, the fluid 2 flows into the inlet pipe 16 inserted inside the header 10 and enters the inlet pipe 1
5 into the header 10 through the plurality of holes 17, the fluid 2 is uniformly distributed inside the header 1° and the grooves 1
Since it can be uniformly branched into 4a and 14b,
The heat exchange performance was improved.

In this embodiment, the hole 17 is made into a round hole, but the hole shape may be made longer or larger.
It is clear that a similar effect can be obtained with a square hole.

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, a part of the inlet pipe is inserted into the #J henoter, and the inlet pipe inserted into the header is provided with a plurality of holes for discharging fluid. This makes it possible to uniformly branch the fluid into six grooves, thereby significantly improving heat exchange performance.

[Brief explanation of the drawing]

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 DD cross section of the laminated heat exchanger. Figure 4 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, and Figure 6 is a sectional view taken along line A-A in Figure 4. , FIG. 7 is a sectional view taken along line B-B in FIG. 3. 1... Heat exchange plate, 4.5... End plate, 8
, 9... Outlet pipe, 10, 11.12.13...
...Header 14 a, 14 b...
Groove, 1517...hole.

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, a part of the inlet pipe is inserted into the header, and the inlet pipe inserted into the header is provided with a plurality of holes for discharging fluid.