JP2877237B2 - Stacked heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated heat exchanger used for an air conditioning system or the like.

[0002]

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. Demand is growing.

A conventional laminated heat exchanger (Japanese Patent Laid-Open Publication No. Sho 61-243297) will be described below with reference to the drawings.

FIG. 5 is a perspective view of a conventional laminated heat exchanger, FIG. 6 is a plan view of a primary plate, FIG. 7 is a plan view of a seal plate, FIG. 8 is a plan view of a secondary plate, and FIG. Is a sectional view of a main part.

[0005] As shown in the figure, a conventional laminated heat exchanger is
A plurality of primary plates 1, seal plates 2, and secondary plates 3 are alternately stacked, and end plates 8 and 9 having inlet pipes 4, 5 and outlet pipes 6, 7 at both ends are provided inside. It has a structure in which it is adhered by brazing or an adhesive so that fluid does not leak.

[0006] Fluid flowing from the inlet pipe 4 is supplied to the holes 10 and 1.
1 flows into a plurality of grooves 12 of the primary side plate 1 and flows out of the holes 10, 11 on the opposite side to the outlet pipe 6. on the other hand,
The other fluid flowing from the inlet pipe 5 passes through the holes 10 and 11 and flows into the groove 13 of the secondary plate 3, and the holes 10 and 11 on the opposite side.
From the outlet pipe 7. At this time, heat exchange is performed between the upper and lower different fluids via the seal plate 2.

[0007]

However, in the above configuration, as the first problem, when the inlet pipes 4, 5 and the outlet pipes 6, 7 are attached to the end plate 8, a counterbore process is performed on the end plate 8. The application inlet pipes 4 and 5 and the outlet pipes 6 and 7 have to be positioned, and there is a problem that processing cost and processing time are required.

A second problem is that since the primary plate 1, the seal plate 2, and the secondary plate 3 have the same outer dimensions, it is necessary to confirm whether the order of the plates is correctly stacked after assembly. It was difficult to do this.

The present invention has been made in view of the above problems, and provides a laminated heat exchanger that can easily find a cost reduction due to a reduction in processing cost and processing time and an erroneous plate assembly.

[0010]

In order to solve the first problem, a laminated heat exchanger according to the present invention comprises an end plate having a fluid inlet / outlet tube, a plurality of grooves through which a fluid flows, and a plurality of grooves. The plate is formed of a plate having a hole communicating with the entrance / exit tube, and a diameter of a hole communicating with the entrance / exit tube of the plate in contact with the end plate is smaller than an outer diameter of the entrance / exit tube.

According to another aspect of the present invention, there is provided a laminated heat exchanger comprising: an end plate having a fluid inlet / outlet tube;
A plurality of two or more types of plates each having a plurality of grooves through which a fluid flows are laminated, and the shapes of the corners of the plates are changed for each type.

[0012]

According to a first aspect of the present invention, there is provided a low-cost laminated heat exchanger which can perform positioning of an inlet pipe and an outlet pipe without counterbore processing on an end plate by the above structure. Can be.

According to the second aspect of the present invention, the type of the plate can be checked at a glance even after the plate is assembled, and a mistake in assembling the plate can be easily found.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A laminated heat exchanger according to one embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a main part of a laminated heat exchanger according to a first embodiment of the present invention, in which a plurality of primary side plates 1, seal plates 2, and secondary side plates 3 are alternately laminated. The end plate 8 and the end plate 9 having the inlet pipes 4 and 5 and the outlet pipes 6 and 7 at both ends thereof are adhered to each other by brazing or an adhesive so as to prevent leakage of the internal fluid.

The fluid flowing from the inlet pipe 4 is supplied to the holes 10, 1
1 flows into a plurality of grooves 12 of the primary side plate 1 and flows out of the holes 10, 11 on the opposite side to the outlet pipe 6. on the other hand,
The other fluid flowing from the inlet pipe 5 passes through the holes 10 and 11 and flows into the groove 13 of the secondary plate 3, and the holes 10 and 11 on the opposite side.
From the outlet pipe 7. At this time, heat exchange is performed between the upper and lower different fluids via the seal plate 2.

In this embodiment, the diameter D of the holes 10, 11 of the primary plate 1, the seal plate 2, and the secondary plate 3 is made smaller than the outer diameter E of the inlet pipes 4, 5 and the outlet pipes 6, 7. As a result, the inlet pipes 4, 5 and the outlet pipes 6, 7 stop at the position where they come into contact with the primary plate, and positioning can be performed without counterbore processing on the end plate 8.

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

FIG. 2 is a plan view of a primary plate according to another embodiment of the present invention, FIG. 3 is a plan view of a seal plate, and FIG.
FIG. 4 is a plan view of the secondary plate, in which a plurality of primary plates 1, seal plates 2, and secondary plates 3 are alternately stacked, and end plates having inlet pipes 4, 5 and outlet pipes 6, 7 at both ends thereof. 8 and the end plate 9 are adhered to each other by brazing or an adhesive so as to prevent leakage of the internal fluid.

The fluid flowing from the inlet pipe 4 is supplied to the holes 10, 1
1 flows into a plurality of grooves 12 of the primary side plate 1 and flows out of the holes 10, 11 on the opposite side to the outlet pipe 6. on the other hand,
The other fluid flowing from the inlet pipe 5 passes through the holes 10 and 11 and flows into the groove 13 of the secondary plate 3, and the holes 10 and 11 on the opposite side.
From the outlet pipe 7. At this time, heat exchange is performed between the upper and lower different fluids via the seal plate 2.

In this embodiment, the corner of the primary side plate 1 is R
Since the corner of the secondary plate 3 is dropped to the corner C at the corner, the type of the plate can be determined at a glance even after the plate is assembled, so that a mistake in assembling the plate can be easily found. it can.

[0022]

As described above, the present invention comprises an end plate having a fluid inlet / outlet tube, a plate having a plurality of grooves through which fluid flows, and a hole communicating with the inlet / outlet tube. By making the diameter of the hole communicating with the entrance / exit pipe of the plate in contact with the outer diameter of the entrance / exit pipe smaller, it becomes possible to position the entrance / exit pipe without counterbore processing on the end plate, thereby achieving low-cost laminated heat exchange. Vessel can be provided.

In addition, the present invention is characterized in that an end plate having a fluid inlet / outlet pipe and a plurality of two or more plates having a plurality of grooves through which a fluid flows are laminated in plural, and the shape of the corner of the plate is determined for each type. Thus, the type of the plate can be determined at a glance even after the plate is assembled, and a mistake in assembling the plate can be easily found.

[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 first invention of the present invention.

FIG. 2 is a plan view of a primary plate according to an embodiment of the second invention of the present invention.

FIG. 3 is a plan view of a seal plate according to an embodiment of the second invention of the present invention.

FIG. 4 is a plan view of a secondary plate according to an embodiment of the second invention of the present invention.

FIG. 5 is a perspective view of a conventional laminated heat exchanger.

FIG. 6 is a plan view of a primary plate of a conventional laminated heat exchanger.

FIG. 7 is a plan view of a seal plate of a conventional laminated heat exchanger.

FIG. 8 is a plan view of a secondary plate of the conventional laminated heat exchanger.

FIG. 9 is a sectional view of a main part of the laminated heat exchanger of FIG. 6;

[Explanation of symbols]

 1,2,3 plate 4,5,6,7 entrance tube 8,9 end plate 10,11 hole 12,13 groove

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-139392 (JP, A) JP-A-3-251690 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F28F 3/00-3/14 F28D 9/00-9/02

Claims (2)

(57) [Claims] 1. An end plate having an inlet / outlet pipe for fluid, a plate having a plurality of grooves through which fluid flows and a hole communicating with the inlet / outlet pipe, and communicating with an inlet / outlet pipe of the plate in contact with the end plate. A stacked heat exchanger, wherein the diameter of the hole is smaller than the outer diameter of the inlet / outlet pipe. 2. An end plate having a fluid inlet / outlet pipe and a plurality of two or more plates having a plurality of grooves through which a fluid flows inside are stacked in plural, and the shape of the corner of the plate is changed for each type. A stacked heat exchanger.