JPH1151590A - Laminated type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and effectively support a pipe member without increasing the number of components in a laminated type heat exchanger obtained by laminating a plurality of shells formed of fluid channels between a pair of plate members. SOLUTION: In the laminated type heat exchanger comprising a core formed by laminating a plurality of shells formed of fluid channels 15 between a pair of plate members 13, a reinforcing plate 21 disposed at an end face of the core, and pipe members 23, 26 inserted into pipe mounting holes 21a formed at the plate 21 and opened with a tank 17 formed by allowing the members 13 to protrude to outside, ends of the members 23, 25 are projected from the tank 17 of the members 13 adjacent to the plate 21 to the adjacent tank 17, and the members 23, 25 are held in a fluid passage hole 31a formed at the tank 17.

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 in which a plurality of shells each having a fluid channel formed between a pair of plate members are laminated.

[0002]

2. Description of the Related Art Generally, in a heat exchanger such as an oil cooler or an intercooler of an automobile, a laminated heat exchanger in which a plurality of shells having a fluid flow path formed between a pair of plate members is often used. Conventionally, as such a laminated heat exchanger, for example, one disclosed in Japanese Utility Model Laid-Open No. 63-109881 is known.

FIGS. 5 and 6 show this type of stacked heat exchanger. Reference numeral 1 denotes a shell in which a fluid flow path 3 is formed between a pair of plate members 2. On both sides of the pair of plate members 2 of the shell 1, tank portions 4 are formed to protrude outward. The core 1 is formed by laminating a plurality of the shells 1.

[0004] Reinforcing plates 6 are arranged on both end surfaces of the core portion 5, and mounting brackets 7 are fixed to the reinforcing plates 6. The reinforcing plate 6 is provided with a pipe member 8 for oil inflow and a pipe member 9 for oil outflow. FIG. 7 shows the details of the structure for attaching the pipe members 8 and 9 to the reinforcing plate 6. The reinforcing plate 6 has a concave portion 6 a formed toward the tank portion 4 of the pair of plate members 2.

A seat 6b is formed around the recess 6a, and the seat member 10 is placed on the seat 6b. Then, pipe members 8 and 9 are fitted into through holes formed in the concave portions 6 a of the sheet member 10 and the reinforcing plate 6, and the tips of the pipe members 8 and 9 are formed in the tank portions 4 of the pair of plate members 2. It is opened in the fluid flow hole 2a to be formed.

The pipe members 8, 9 and the sheet member 1
The reinforcing plate 6 and the pair of plate members 2 are made of aluminum and brazed to each other. In such a stacked heat exchanger, the pipe members 8, 9
Is brazed to a through hole formed in the concave portion 6a of the reinforcing plate 6, and a position at a predetermined distance from the distal ends of the pipe members 8, 9 is supported by the sheet member 10, so that the pipe member 8 , 9 can be firmly fixed.

[0007]

However, in such a conventional laminated type heat exchanger, since a position at a predetermined distance from the leading ends of the pipe members 8 and 9 is supported by the sheet member 10, a separate sheet is used. There is a problem that the member 10 is required, the number of parts is increased, and the number of assembling steps is increased.

The present invention has been made in order to solve such a conventional problem, and an object of the present invention is to provide a laminated heat exchanger capable of easily and reliably supporting a pipe member without increasing the number of parts. Aim.

[0009]

According to a first aspect of the present invention, there is provided a laminated heat exchanger, wherein a plurality of shells each having a fluid flow path formed between a pair of plate members are laminated to form a core portion, and the core portion is formed. A reinforcing plate is disposed on the end face of the reinforcing plate, a pipe member is inserted into a pipe mounting hole formed in the reinforcing plate, and the pipe member is opened to a tank portion formed by projecting the pair of plate members outward. In the laminated heat exchanger, the tip of the pipe member is projected from at least a tank portion of the pair of plate members adjacent to the reinforcing plate to an adjacent tank portion, and the pipe member is formed in the tank portion. Characterized by being held in a fluid passage hole.

According to a second aspect of the present invention, there is provided the laminated heat exchanger according to the first aspect, wherein an inwardly projecting portion is disposed at a predetermined angle in the fluid flow hole in which the pipe member is held. And the inner surface of the protruding portion is in contact with the outer periphery of the pipe member. The stacked heat exchanger according to claim 3 is the stacked heat exchanger according to claim 1 or 2, wherein the pair of plate members, the reinforcing plate, and the pipe member are made of aluminum and brazed to each other. Features.

(Function) In the laminated heat exchanger of the first aspect,
The pipe member is inserted into a pipe mounting hole formed in the reinforcing plate, and the tip of the pipe member protrudes from the tank portion of the pair of plate members adjacent to the reinforcing plate to the adjacent tank portion. Is held in the fluid passage hole formed in the hole.

In the stacked heat exchanger of the present invention, a plurality of inwardly projecting portions are formed at a predetermined angle in the fluid flow hole holding the pipe member, and the inner surface of the projecting portion is formed by the pipe member. And the pipe member is held.
In the stacked heat exchanger of claim 3, a pair of plate members,
The reinforcing plate and the pipe member are made of aluminum and brazed to each other.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 show the details of the main part of FIG. 3, and FIG. 3 shows a first embodiment in which the laminated heat exchanger of the present invention is applied to an oil cooler. In FIG. 3, reference numeral 11 denotes a shell in which a fluid flow path 15 is formed between a pair of plate members 13.

A pair of plate members 13 of the shell 11
A tank portion 17 is formed to protrude outward on both sides of the tank. Then, a plurality of the shells 11 are laminated to form the core portion 1.
9 are formed. Reinforcing plates 21 are arranged on both end surfaces of the core portion 19, and a mounting bracket 23 is fixed to the reinforcing plates 21.

The reinforcing plate 21 has a pipe member 23 for oil inflow and a pipe member 2 for oil outflow.
5 are arranged. In this embodiment, the fluid passage 15 formed between the pair of plate members 13 includes:
The inner fin 27 is housed.

Corrugated fins 29 are arranged between the shells 11 to be stacked and between the shell 11 and the reinforcing plate 21. In this embodiment, FIG.
As shown in the figure, a pipe mounting hole 21a into which the pipe members 23 and 25 are inserted is formed in the upper reinforcing plate 21 at a position to be the tank portion 17 of the pair of plate members 13.

A fluid flow hole 31 is formed in the tank portion 17 of the pair of plate members 13 so as to extend vertically through the tank portion 17. Then, the pipe members 23, 2
5 project from the first tank portion 17a of the pair of plate members 13 adjacent to the reinforcing plate 21 to the adjacent second tank portion 17b.

That is, the upper plate member 13 of the first tank portion 17a is brazed to the reinforcing plate 21, and the lower plate member 13 of the first tank portion 17a is brazed.
And the plate member 13 on the upper side of the second tank portion 17b are brazed to each other. And the pipe member 2
3, 25 are held in a fluid passage hole 31a formed in the plate member 13 below the first tank portion 17a and the plate member 13 above the second tank portion 17b.

As shown in FIG. 2, a plurality of projecting portions 31b projecting inward are formed at a predetermined angle in the fluid flow hole 31a in which the pipe members 23 and 25 are held. Are in contact with the outer circumferences of the pipe members 23 and 25. In this embodiment, the above-described pipe members 23 and 25, the reinforcing plate 21, the pair of plate members 13, the inner fin 27 and the corrugated fin 2
9 is made of aluminum and brazed to each other.

The outer circumferences of the pipe members 23 and 25 are
A pipe mounting hole 21a formed in the reinforcing plate 21 and a plate member 13 below the first tank portion 17a.
And the inner surface of the protruding portion 31b of the fluid passage hole 31a formed in the plate member 13 on the upper side of the second tank portion 17b. In the above-described stacked heat exchanger,
Oil flowing from the oil inflow pipe member 23 into the tank portion 17 formed on one side of the core portion 19 is cooled while passing through the fluid flow path 15 formed between the pair of plate members 13. Flows into the tank portion 17 formed on the other side of the core portion 19 and flows out from the pipe member 25 for oil outflow.

A part of the oil which has flowed from the oil inflow pipe member 23 into the tank portion 17 formed on one side of the core portion 19 is removed from the plate member 13 below the first tank portion 17a by the first tank portion 17a. Projection portion 31b of fluid passage hole 31a formed in plate member 13 on the upper side of second tank portion 17b
And flows into the fluid flow path 15 formed between the pair of plate members 13 arranged adjacent to the reinforcing plate 21.

The oil flowing into the tank 17 disposed on the other side of the core 19 is supplied to the lower plate member 13 of the first tank 17a and the upper plate 13 of the second tank 17b. Through the gap between the protrusions 31b of the fluid passage hole 31a formed in the oil passage hole 31a. In the laminated heat exchanger configured as described above, the pipe members 23 and 25 are connected to the reinforcing plate 2.
1, and the ends of the pipe members 23 and 25 are connected from the first tank portion 17a of the pair of plate members 13 adjacent to the reinforcing plate 21 to the second tank portion 17b adjacent thereto. And pipe members 23 and 25 are connected to fluid passage holes 3 formed in tank portion 17.
1a, the pipe members 23 and 25 can be easily and reliably supported without increasing the number of parts.

In the above-mentioned laminated heat exchanger, a plurality of inwardly projecting portions 31b are formed at predetermined angles in the fluid flow holes 31a in which the pipe members 23 and 25 are held. Since the inner surfaces of the pipe members 31b are in contact with the outer circumferences of the pipe members 23 and 25, the pipe members 23 and 25 are reliably secured by the protruding portions 31b in a state where a fluid passage is secured between the pipe members 23 and 25 and the fluid circulation hole 31a. Can be held.

Further, in the above-described laminated heat exchanger, the pair of plate members 13, the reinforcing plate 21, and the pipe members 23 and 25 are formed of aluminum and brazed to each other, so that these members can be easily and reliably formed. Can be joined. FIG. 4 shows a second embodiment of the laminated heat exchanger of the present invention.
In this embodiment, the pipe member 33 includes a first tank portion 17a of a pair of plate members 13 adjacent to the reinforcing plate 21 and a second tank portion adjacent to the first tank portion 17a. And the tip of the pipe member 33 is located in the third tank portion 17c adjacent to the second tank portion 17b.

The pipe member 33 is held in a fluid passage hole 31a formed in the plate member 13 below the second tank portion 17b and the plate member 13 above the third tank portion 17c. . As shown in FIG. 2, a plurality of inwardly projecting protrusions 31b are formed at a predetermined angle in the fluid flow hole 31a in which the pipe member 33 is held, and the inner surface of the protrusion 31b is 33 is in contact with the outer periphery.

In this embodiment, the plate member 13 below the first tank 17a and the second tank 17
fluid passage hole 3 formed in plate member 13 above b
In 1c, the protrusion 31b is not formed, and the fluid flow hole 31c is made sufficiently larger than the outer diameter of the pipe member 33, whereby a gap is formed between the pipe member 33 and the fluid flow hole 31c. I have.

Also in this embodiment, the same effects as in the first embodiment can be obtained. In the above-described embodiment, an example in which the present invention is applied to an oil cooler has been described. However, the present invention is not limited to such an embodiment, and may be applied to, for example, a heat exchanger such as an intercooler. Can be.

Further, in the above-described embodiment, an example in which the protrusions 31b are formed at three places of the fluid flow holes 31a has been described. However, the present invention is not limited to such an embodiment, and the present invention is not limited thereto. Good.

[0029]

As described above, in the stacked heat exchanger of the first aspect, the pipe member is inserted into the pipe mounting hole formed in the reinforcing plate, and the tip of the pipe member is adjacent to the reinforcing plate. The pair of plate members project from the tank portion to the adjacent tank portion, and the pipe member is held in the fluid passage hole formed in the tank portion. Therefore, the pipe member is easily and reliably supported without increasing the number of parts. be able to.

In the stacked heat exchanger of the present invention, a plurality of inwardly projecting portions are formed at predetermined angles in the fluid flow hole in which the pipe member is held, and the inner surface of the projecting portion is formed by the pipe member. The pipe member can be reliably held by the protrusion in a state where a fluid passage is secured between the pipe member and the fluid circulation hole. In the laminated heat exchanger according to the third aspect, the pair of plate members, the reinforcing plate, and the pipe member are formed of aluminum and brazed to each other, so that these members can be easily and reliably joined.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a pipe member of the laminated heat exchanger of FIG. 3 and its vicinity.

FIG. 2 is a cross-sectional view showing a pipe member of the laminated heat exchanger of FIG. 3 and its vicinity.

FIG. 3 is a front view showing the first embodiment of the stacked heat exchanger of the present invention.

FIG. 4 is a longitudinal sectional view showing a main part of a second embodiment of the stacked heat exchanger of the present invention.

FIG. 5 is a front view showing a conventional laminated heat exchanger.

FIG. 6 is a top view of FIG. 5;

FIG. 7 is a longitudinal sectional view showing details of a main part of the stacked heat exchanger of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Shell 13 Plate member 15 Fluid flow path 17 Tank part 19 Core part 21 Reinforcement plate 21a Pipe mounting hole 23, 25 Pipe member 31, 31a Fluid flow hole 31b Projection

Claims (3)

[Claims] A core (19) is formed by laminating a plurality of shells (11) in which a fluid flow path (15) is formed between a pair of plate members (13), and the core (1) is formed.
A reinforcing plate (21) is arranged on the end face of 9), and a pipe mounting hole (21a) formed in the reinforcing plate (21).
And a pipe member (23, 25) inserted into the tank member (17) formed by projecting the pair of plate members (13) outward. In the heat exchanger, the tip of the pipe member (23, 25) is connected at least from the tank part (17) of the pair of plate members (13) adjacent to the reinforcing plate (21) to the adjacent tank part (17). The pipe member (23, 25)
Into the fluid passage hole (3) formed in the tank portion (17).
A laminated heat exchanger characterized by being held in 1a). 2. The laminated heat exchanger according to claim 1, wherein the fluid flow hole (31a) in which the pipe member (23, 25) is held has a protrusion (31b) projecting inwardly at a predetermined angle. , And the inner surface of the projection (31b) is in contact with the outer periphery of the pipe member (23, 25). 3. The stacked heat exchanger according to claim 1, wherein the pair of plate members (13) and the reinforcing plate (2) are provided.
1) and the pipe members (23, 25) are made of aluminum and are brazed to each other.