JP2741950B2 - Stacked heat exchanger - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a laminated heat exchanger used for an air conditioning system or the like.

2. Description of the Related Art Stacked heat exchangers are used for exchanging heat between chlorofluorocarbons, chlorofluorocarbons and water, and water and water in air-conditioning systems and the like. Is growing.

Hereinafter, a conventional example (Japanese Patent Laid-Open No. 61-24329) will be described with reference to FIGS.
No. 7) will be described.

FIG. 5 is a perspective view of a conventional laminated heat exchanger, and FIG.
FIG. 7 is a plan view of a seal plate, FIG. 8 is a plan view of a secondary plate, and FIG. 9 is a cross-sectional view of a main part.

As shown in the figure, the conventional laminated heat exchanger has a primary plate 1, a seal plate 2, a secondary plate 3, and a seal plate 2 which are alternately laminated in a plural number, and an inlet portion 4,
The end plate 8 and the end plate 9 having the outlet 5 and the outlets 6 and 7 are in close contact with each other so that the internal fluid does not leak.

The fluid flowing from the inlet 4 is divided into
It flows into the plurality of grooves 11 of the next plate 1 and flows out to the outlet 6. On the other hand, the other fluid flowing from the inlet 5 flows into the groove 13 of the secondary plate 3 divided by the partition 12 and
Leaks to At this time, heat exchange is performed between the upper and lower different fluids via the seal plate 2.

However, in the above configuration, there is only the seal plate 2 between the grooves 10 and 13 on the same straight line,
If there is a pressure difference between 10 and the fluid flowing through the groove 13, the seal plate 2 may be deformed, so that the plate thickness H of the seal plate 2 must be increased, and the volume becomes large. There was a problem that costs were high.

In view of the above problems, the present invention provides a small-sized, low-cost laminated heat exchanger.

Means for Solving the Problems In order to solve the above problems, a laminated heat exchanger of the present invention comprises an end plate having an inlet / outlet portion for a fluid and a primary plate having a plurality of grooves through which a fluid flows. A plurality of secondary plates are alternately stacked via a seal plate, and grooves are provided in the secondary plate on a partition for forming a plurality of grooves in the primary plate.

Operation The present invention can provide a small-sized, low-cost laminated heat exchanger that can reduce the thickness of the seal plate by the above-described configuration.

Embodiment Hereinafter, a laminated heat exchanger according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a main part of a laminated heat exchanger according to the present invention.
FIG. 3 is a plan view of the primary plate, FIG. 3 is a plan view of the seal plate, and FIG. 4 is a plan view of the secondary plate.

As shown in the figure, the stacked heat exchanger of the present invention has a primary plate 21, a seal plate 22, a secondary plate 23, and a plurality of seal plates 22 alternately stacked, and an inlet portion is provided at both ends.
The end plate 8 and the end plate 9 having the outlets 4 and 5 and the outlets 6 and 7 are in close contact with each other so that the internal fluid does not leak.

The fluid flowing in from the inlet 4 is divided into
It flows into the plurality of grooves 31 of the next plate 21 and flows out to the outlet 6. On the other hand, other fluid flowing from the inlet 5 flows into the groove 33 of the secondary plate 23 divided by the partition 32,
Leaks to At this time, heat exchange is performed between the upper and lower different fluids via the seal plate 22.

In this embodiment, the groove 33 of the secondary plate is provided on the partition 30 of the primary plate 21 and the groove 31 of the primary plate 21 is provided on the partition 32 of the secondary plate 23. A total of three plates, two seal plates 22 and one secondary side plate 23 or one primary plate 21, are arranged between the grooves 31 or 33 on the same line. Since the thickness H of the conventional seal plate 2 can be ensured with three plates, the same strength can be obtained by setting the seal plate 22 to about 1/3 the thickness h of the conventional seal plate. A stacked heat exchanger can be provided.

Effect of the Invention As described above, the present invention provides a plurality of end plates each having an inlet / outlet portion for a fluid, and a plurality of primary plates and a plurality of secondary plates each having a plurality of grooves through which a fluid flows through a seal plate. By laminating and arranging the grooves so that the grooves of the secondary plate come on the partition for forming the plurality of grooves of the primary plate, the strength of the seal plate is increased, The thickness can be reduced and it is small,
A low-cost stacked heat exchanger can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a laminated heat exchanger according to an embodiment of the present invention, FIG. 2 is a plan view of a primary plate in the embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a plan view of a secondary plate in one embodiment of the present invention, FIG. 5 is a perspective view of a conventional laminated heat exchanger, and FIG. 6 is a laminated heat exchanger of the same type. , FIG. 7 is a plan view of a seal plate of the laminated heat exchanger, and FIG. 8 is a plan view of a secondary plate of the laminated heat exchanger. FIG. 9 is a sectional view of a main part of the laminated heat exchanger. 21 Primary plate, 22 Seal plate, 23
Secondary plate, 30, 32 ... partition, 31, 33 ... groove.

Claims (1)

(57) [Claims] 1. An end plate having an inlet / outlet portion for a fluid and a plurality of primary plates and a plurality of secondary plates having a plurality of grooves through which the fluid flows are alternately laminated via a seal plate.
A laminated heat exchanger, wherein grooves of the secondary plate are arranged on a partition for forming a plurality of grooves of the primary plate.