JP2003028593A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger having a streamlined constitution by preventing partition members from causing displacement in the process of furnace brazing. SOLUTION: The heat exchanger comprises tubes 200, tanks 400 to which ends to the tubes are connected, an inlet 500 and an outlet 600 for passing a refrigerant. A first tank member 410 and a second tank member 420 are assembled into cylindrical bodies. Partition members 430 are placed to partition the inside of the cylindrical bodies. The tank members 410, 420 and the partition members are integrated by furnace brazing. Holes 411 are made in the first tank member in order to connect the ends of the tubes. A plurality of caulking pieces 421 are formed on the edges of the first or second tank member. At the time of the furnace brazing, the partition members are placed between the first and second tank members, and the caulking pieces are clinched to fix the first and second tank members together. The partition members are placed in the middle part of the two positions of clinched caulking-pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a tube through which a medium flows, a tank to which the ends of the tube are connected, and a medium inlet and outlet provided in the tank. Relates to a heat exchanger for exchanging heat.

[0002]

2. Description of the Related Art Generally, a heat exchanger such as a condenser in a refrigeration cycle, a radiator of an automobile, a heater core, or the like forms a core by alternately laminating a plurality of tubes and a plurality of fins, and the ends of the tubes are connected to a tank. It is configured by connecting to. The medium is taken in from the inlet provided in the tank, exchanges heat with the heat transmitted to the core, passes through the tube, and is then discharged to the outside from the outlet provided in the tank.

Further, as a tank of a heat exchanger, there is known a tank provided with a plurality of members which are assembled with each other to form a tubular body, and a partition member which partitions the inside of the tubular body. This type of tank is disclosed in, for example, JP-A-5-157485 and JP-A-5-1574.
86, Japanese Patent Laid-Open No. 5-248783, Japanese Patent Laid-Open No. 5-272889, Japanese Patent Laid-Open No. 7-10368
3, also described in JP-A 8-29089 and the like.

[0004]

By the way, it is desirable that the above-mentioned heat exchanger is easy to manufacture, and that the required pressure resistance performance and heat exchange efficiency can be ensured satisfactorily. What is reasonably structured is required.

For example, in the above-mentioned tank, the plurality of members forming the cylindrical body and the partition member are integrally brazed together with the tubes and fins by furnace brazing or the like. However, in such furnace brazing,
The partition member may be displaced within the cylindrical body.
Since the displacement of the partition member causes the performance of the heat exchanger to deteriorate and the medium to leak, at the manufacturing site of the heat exchanger, it is desired to efficiently avoid such displacement of the partition member. .

The present invention has been made in view of the above circumstances, and an object thereof is to provide a rationally constructed heat exchanger.

[0007]

According to a first aspect of the present invention, there is provided a tube through which a medium flows, a tank to which an end portion of the tube is connected, an inlet portion of the medium provided in the tank, In a heat exchanger having an outlet and performing heat exchange with heat transmitted to the tube by the medium, the tank is a first tank member and a second tank member that are assembled with each other to form a cylinder, and the cylinder. A partition member for partitioning the inside of the body, and the first tank member and the second tank member.
The tank member and the partition member are integrally formed by brazing in a furnace, and the first tank member is provided with a hole portion that connects an end portion of the tube, and the first tank member or the second tank member. A plurality of caulking pieces are provided at the edge of the tank member, and during brazing in the furnace, the caulking pieces are arranged while the partition member is arranged between the first tank member and the second tank member. A heat exchanger having a configuration in which it is deformed to fix the first tank member and the second tank member, and the partition member is located in the middle of two positions where the caulking piece is deformed in the longitudinal direction of the tubular body. With such a configuration, the heat exchanger is reasonably constructed.

That is, when the caulking pieces are deformed to fix the first tank member and the second tank member, they are firmly assembled and the reliability of brazing is improved.

Further, since the partition member is located in the longitudinal direction of the tubular body in the middle of the two locations where the caulking pieces are deformed, the partitioning member is held in a balanced manner inside the tubular body and the displacement thereof is prevented. In other words, at the place where the caulking piece is deformed, the partition member is tightened, and the partition member is
By tightening from both sides in the longitudinal direction of the cylinder,
It is restrained in place with moderate pressure. As a result, the partition member is accurately brazed to the first tank member and the second tank member, and the inside of the tubular body is reliably partitioned.

According to a second aspect of the present invention, in the first aspect, the plurality of caulking pieces are provided at a constant pitch on an edge portion of the first tank member or the second tank member. It is a heat exchanger, and according to such a configuration,
The heat exchanger is more reasonably constructed.

That is, by providing a plurality of caulking pieces at a constant pitch, it becomes possible to select and deform a desired caulking piece from among the plurality of caulking pieces. If a desired caulking piece is selected and deformed, for example, it is possible to deal with tanks having different positions of the partition member, and the versatility is improved.

Further, in the case of producing heat exchangers having different lengths of cylinders, if the pitches of a plurality of caulking pieces are constant, it is possible to use a common mold for molding the first tank member or the second tank member. It is possible and has the advantage of improving productivity.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific examples of the present invention will be described below in detail with reference to the drawings.

The heat exchanger 1 of this example is a condenser for an in-vehicle air conditioning refrigeration cycle mounted in an automobile, and as shown in FIG. 1, a plurality of tubes 200 through which a medium (that is, a refrigerant) flows, and tubes 200. A plurality of fins 300 attached to each other, a pair of tanks 400 in which both ends of each tube 200 are connected, a medium inlet portion 500 and a medium outlet portion 600 provided in the pair of tanks 400, and a side plate as a reinforcing member. 700 and.

These tubes 2 constituting the heat exchanger 1
00, the fins 300, the tank 400, the outlet portion 500, the inlet portion 600, and the side plate 700 are assembled by assembling respective members formed by molding aluminum or aluminum alloy, and heat-treating the assembled body in a furnace. Is formed. In addition, during such brazing in a furnace, a brazing filler metal clad and a flux coating are applied to important parts of each member.

The medium flows into the inside of the tank 400 from the inlet 500, flows through the tube 200 while exchanging heat with the heat transferred to the tubes 200 and the fins 300, and then flows out to the outside from the outlet 600.

The tube 200 has a flat shape formed by extrusion molding or roll molding of a plate.
The inside is divided into a plurality of sections to obtain the required pressure resistance performance. The fins 300 are corrugated and are formed by roll-forming a plate.

The inlet portion 500 and the outlet portion 600 are block-shaped or pipe-shaped connectors mounted on the tank 400, respectively, and are configured to connect the piping of the refrigeration cycle.

The side plates 700 are provided on the upper and lower sides of the layer composed of the plurality of tubes 200 and the plurality of fins 300, respectively. Both ends of each side plate 700 are respectively supported by a pair of tanks 400.

As shown in FIGS. 2 to 4, the tank 400 of this embodiment has a first tank member 410 and a second tank member 420 which are assembled with each other to form a cylinder, and the inside of the cylinder at a predetermined interval. It is provided with a plurality of partitioning members 430. That is, the plurality of partition members 340 close both ends of the tubular body and divide the inside of the tubular body into a chamber having a predetermined length. The medium reciprocates several times between the tanks 300 while flowing in from the inlet portion 500 and flowing out from the outlet portion 600.

The first tank member 410 is a member having a substantially U-shaped cross section formed by molding a plate, and a plurality of hole portions 411 for inserting and connecting the ends of the tube 200 are fixed in the longitudinal direction. It is provided at a pitch of. Each hole 41
1 is provided with a taper that improves the insertability of the end of the tube 200.

The second tank member 420 is a member having a substantially U-shaped cross section formed by molding a plate, and a plurality of protruding caulking pieces 421 are arranged at a constant pitch on both edges along the longitudinal direction. Each is provided.

Further, the first tank member 410 and the second tank member 420 are assembled by fitting the first tank member 410 inside the second tank member 420. In this example, the pitch of the caulking pieces 421 is set to be equal to the pitch of the holes 411, and the first tank member 410 and the second tank member 420 have the holes 411 and the caulking pieces 421 as cylinders. They are assembled so that they are staggered in the longitudinal direction of the body.

The partition member 430 is a member formed by punching a plate into a predetermined shape, and its peripheral portion is brazed to the first tank member 410 and the second tank member 420. Further, the partition member 430 is provided with a convex portion 431, and a notch 422 into which the convex portion 431 is fitted is provided at a key portion of the second tank member 420.
Is positioned at a predetermined position by inserting the protrusion 431 into the notch 422.

Then, the first tank member 410, the second tank member 420, and the partition member 430 are integrated by the above-described furnace brazing.

When brazing in the furnace, the first tank member 41 is used.
While the partition member 430 is arranged between the zero tank member 420 and the second tank member 420, the caulking piece 421 is deformed to make the first tank member 4
10 and the second tank member 420 are fixed. The first tank member 410 is held by the deformed caulking piece 421. The caulking piece 421 is deformed by using a caulking jig.

Here, in this example, a plurality of caulking pieces 421 are provided.
Among them, a required caulking piece 421 is selected and deformed.
Specifically, in the longitudinal direction of the cylindrical body, the partition member 421
The caulking pieces 421 at the same positions as are not deformed, but the caulking pieces 421 on both sides thereof are deformed.

Each partition member 430,
The caulking piece 421 is located in the middle of the two deformed portions in the longitudinal direction of the tubular body.

Further, when the distance between the partition members 430 is relatively large, the other caulking pieces 421 are also deformed in order to secure the assembling strength of the first tank member 410 and the second tank member 420.

With this structure, the first tank member 410 and the second tank member 420 can be firmly assembled, and the partition member 430 can be held in a balanced manner inside the cylindrical body.

In the present embodiment, the first tank member 410 is fitted inside the second tank member 420, or alternatively, the second tank member 420 is fitted inside the first tank member 410. It is also possible to configure. In this case, the caulking piece 421 is the first tank member 41.
It is provided at the edge of 0.

Further, in this example, the convex portion 431 is provided with the notch 4
22 is used to position the partition member 430, or alternatively, a recess is provided in a key portion on the inner surface of the first tank member 410 or the second tank member 420, and the partition member 430 is mounted in the recess and positioned. It is also possible to do so.

However, according to the structure in which the displacement of the partition member 430 is prevented by the deformation of the crimping piece 421, the convex portion 43 is formed.
It is also possible to omit positioning means such as 1 and the notch 422. If the positioning means is omitted, the number of processed members can be reduced. In addition, since the position of the partition member 430 is set freely, it is also advantageous in improving versatility.

As explained above, the heat exchanger of this example is extremely rational and can be suitably used as a condenser for a refrigeration cycle. Further, the configuration of this example in which the displacement of the partition member is prevented by the deformation of the crimping piece can be applied to other various heat exchangers.

[0035]

According to the first aspect of the present invention, there is provided a tube through which a medium flows, a tank connecting the ends of the tube, and an inlet part and an outlet part of the medium provided in the tank. In the heat exchanger, wherein the medium exchanges heat with heat transferred to the tube, the tank includes a first tank member and a second tank member that are assembled with each other to form a cylinder, and the inside of the cylinder. And a partition member for partitioning, wherein the first tank member, the second tank member, and the partition member are integrated by furnace brazing, and the first tank member is provided with the end portion of the tube. A hole for connection is provided, and the first tank member or the second tank member is provided.
A plurality of caulking pieces are provided at the edge of the tank member, and during brazing in the furnace, the caulking pieces are arranged while the partition member is arranged between the first tank member and the second tank member. A heat exchanger having a configuration in which it is deformed to fix the first tank member and the second tank member, and the partition member is located in the middle of two positions where the caulking piece is deformed in the longitudinal direction of the tubular body. With such a configuration, the heat exchanger can be reasonably constructed.

According to a second aspect of the present invention, in the first aspect, the plurality of caulking pieces are provided at a constant pitch on an edge portion of the first tank member or the second tank member. It is a heat exchanger, and according to such a configuration,
The heat exchanger can be constructed more reasonably.

[Brief description of drawings]

FIG. 1 is a front view showing a heat exchanger according to a specific example of the present invention.

FIG. 2 is a perspective view showing a tank according to a specific example of the present invention.

FIG. 3 is an exploded perspective view showing a tank according to a specific example of the present invention.

FIG. 4 is a perspective view showing a second tank member according to a specific example of the present invention.

[Explanation of symbols]

1 heat exchanger 200 tubes 300 fins 400 tanks 410 First tank member 411 hole 420 Second tank member 421 caulking piece 422 cutout 430 Partition member 431 convex 500 entrance 600 exit 700 side plate

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Manabu Yamashita             39, Higashihara, Chiyo-ji, Konan-cho, Osato-gun, Saitama Prefecture               Zexel Valeo Climate Co., Ltd.             In control

Claims (2)

[Claims] 1. A tube which circulates a medium, a tank having an end portion of the tube connected thereto, and an inlet section and an outlet section of the medium which are provided in the tank, and are provided with heat transmitted to the tube by the medium. In the heat exchanger for exchanging heat, the tanks are assembled to each other to form a cylindrical body.
A tank member and a second tank member, and a partition member that partitions the inside of the cylindrical body are provided, and the first tank member, the second tank member, and the partition member are integrally formed by brazing in a furnace. , The first tank member is provided with a hole for connecting the end of the tube, and a plurality of caulking pieces are provided at an edge of the first tank member or the second tank member, At the time of brazing, while arranging the partition member between the first tank member and the second tank member, the caulking piece is deformed to fix the first tank member and the second tank member, The heat exchanger characterized in that the partition member is located in the middle of the two positions where the caulking pieces are deformed in the longitudinal direction of the tubular body. 2. The heat exchanger according to claim 1, wherein the plurality of crimping pieces are provided at a constant pitch on an edge portion of the first tank member or the second tank member.