JP2002181485A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger with a tank plate and end plate assembled efficiently. SOLUTION: In a heat exchanger provided with a core 200 comprising a tube 210 circulating a medium and a fin 220 fitted to the tube and a tank 300 connected with the end of the tube to perform the heat exchange of the medium by the heat conducted to the core, a semi-cylindrical tank plate 310 and an end plate 320 provided with hole parts 321 connecting the ends of the tubes are assembled to form a tank. The edge of the tank plate is provided with bent pieces 311 holding the end plate, and the bent piece is a heat exchanger having such a constitution that has the bent tip side with the base end side contacting the end plate. Moreover, the length (d) of the base end side of the bent piece contacting the end plate is set longer than the plate thickness(t) of the tank plate at the time when the bent piece is bent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a core made of a tube through which a medium flows and a fin mounted on the tube, and a tank to which the end of the tube is connected. Heat exchanger.

[0002]

2. Description of the Related Art In general, a heat exchanger such as a condenser or an evaporator in a refrigeration cycle is constructed by alternately stacking a plurality of tubes and a plurality of fins to form a core, and connecting the ends of the tubes to a tank. Have been. The medium is taken into the inside from the inlet provided in the tank, passes through the tube while exchanging heat by the heat transmitted to the core, and is discharged to the outside from the outlet provided in the tank.

Further, as a tank for this type of heat exchanger, for example, Japanese Patent Application Laid-Open No. 5-302794 and Japanese Patent Application Laid-Open No. 10-1
No. 32485, No. 2-133581, No. 3-
As described in Japanese Patent No. 56062 and Utility Model Registration No. 2570322, it is known to combine a semi-cylindrical tank plate with an end plate provided with a hole for connecting an end of a tube. I have.

[0004]

By the way, the above-mentioned heat exchanger is desirably constructed so as to be easy to manufacture and to ensure required pressure resistance performance, heat exchange efficiency, strength and the like. Based on the above points, a more rationally structured one is required.

[0005] The present invention has been made in view of such circumstances, and has as its object to provide a heat exchanger in which a tank plate and an end plate are efficiently assembled.

[0006]

According to the first aspect of the present invention, a core including a tube through which a medium flows and a fin mounted on the tube, and a tank to which an end of the tube is connected are provided. A heat exchanger for performing heat exchange of the medium by heat transmitted to the core, wherein the tank includes a semi-cylindrical tank plate and an end plate provided with a hole connecting an end of the tube. In the edge portion of the tank plate, a bent piece for holding the end plate is provided, and the bent piece is a heat exchanger having a configuration in which a base end side is in contact with the end plate and a distal end side is bent. According to such a configuration, the tank plate and the end plate can be efficiently assembled by bending the bent pieces.

In particular, since the bent piece is bent at the distal end while the base end is in contact with the end plate, it can be easily bent.

If the entire body of the bent piece is to be bent, a relatively strong working pressure is required, and unnecessary deformation of the tank plate is caused, which may cause a medium leakage. According to the present invention, such inconvenience can be efficiently avoided.

According to a second aspect of the present invention, in the first aspect, when the bent piece is bent, a length of a base end side of the bent piece that is in contact with the end plate is equal to a length of the tank plate. The heat exchanger has a configuration larger than the plate thickness. According to such a configuration, the bent pieces can be bent more easily.

That is, in the present invention, the length of the base end side of the bent piece abutting on the end plate is sufficiently ensured with respect to the thickness of the tank plate, and the bending is further facilitated.

The invention described in claim 3 of the present application is the heat exchanger according to claim 1 or 2, wherein a plurality of the bent pieces are provided at the edge of the tank plate. The tank plate and the end plate can be more accurately and firmly assembled by the plurality of bent pieces.

According to a fourth aspect of the present invention, there is provided a heat exchanger according to any one of the first to third aspects, wherein a wall protruding toward the core is provided at an edge of the tank plate. According to such a configuration, the gap formed between the tank and the fin is covered with the wall of the tank plate. Therefore, particularly when air is sent to the core, air leakage caused by the gap between the tank and the fin is eliminated, and the heat exchange efficiency is improved.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

The heat exchanger 1 of this embodiment is a condenser of an air conditioning refrigeration cycle mounted on an automobile. As shown in FIG. 1, a plurality of tubes 210 and a plurality of fins 220 through which a medium flows are alternately provided. A laminated core 200;
A pair of tanks 300 to which the ends of the tubes 210 are connected
And heat exchange of the medium is performed by the heat transmitted to the core 200.

The tank 300 is provided with an inlet 400 for flowing the medium and an outlet 500 for flowing the medium.

The medium flows into the tank 300 from the inlet 400, flows through the tube 210 while exchanging heat, and is then discharged from the outlet 500 to the outside of the tank 300.

The inside of each tank 300 is partitioned at predetermined intervals, and the medium is
It is configured to go back and forth between 00 and a plurality of times.

Further, a gas-liquid separator 600 is provided in one of the tanks 300, and the medium is once sent from the tank 300 to the gas-liquid separator 600 in the process of flowing from the inlet 400 to the outlet 500. Only the liquid layer is at the outlet 500
It is configured to go to.

The upper and lower sides of the core 200 are provided with side plates 700 as reinforcing members. The end of each side plate 700 is supported by the tank 300.

The tubes 210, the fins 220, the tank 300, and the outlet 4 constituting the heat exchanger 1
00, the inlet section 500, the gas-liquid separator 600, and the side plate 700 are integrally formed by assembling each member formed by molding aluminum or an aluminum alloy and subjecting the assembled body to heat treatment in a furnace. I have. The cladding of the brazing material, the application of flux, and the like are performed in advance at key points of each member.

In particular, the tube 210 of the present embodiment is a flat tube made by extrusion or roll forming a plate. The inside thereof is divided into a plurality of sections in order to obtain a required pressure resistance performance.

As shown in FIGS. 2 to 4, the tank 300 of this embodiment includes a semi-cylindrical tank plate 310 and an end plate 320 provided with a hole 321 for inserting and connecting an end of the tube 210. Is assembled.
The plurality of holes 321 are provided at regular intervals over the longitudinal direction of the end plate 320.

The partition plate 33 is disposed between the tank plate 310 and the end plate 320 at a predetermined interval.
0 is provided. That is, the end and the inside of the tank 300 are closed and partitioned by the partition plate 330.

Tank plate 310, end plate 3
20 and the partition plate 330 are each formed by press-forming a plate having a required plate thickness.

It should be noted that the end plate 320 is
Since the reinforcement is performed by connecting the end portions of the tank plate 310, the plate thickness thereof may be set slightly smaller than the plate thickness of the tank plate 310. Also, the end plate 320
Has a configuration that swells toward the core 2 and improves the pressure resistance of the tank 300.

The tank plate 310 and the end plate 3
20 is assembled by mounting an end plate 320 between both edges of the tank plate 310. The insertion amount of the end plate 320 is regulated by the partition plate 330. And both edges of the end plate 320
It is brazed to the inner peripheral surface of the tank plate 310.

The partition plate 330 is a tank plate 3
Projection 331 inserted into hole 310a provided in 10
The positioning is performed by inserting the protrusion 331 into the hole 310a. Further, a step portion 332 for abutting the end plate 320 is provided at a key point of the partition plate 330.

Further, at the edge of the tank plate 310,
A plurality of bent pieces 311 for holding the end plate 320 are provided at appropriate intervals. After the end plate 320 is positioned on the tank plate 310, the bent piece 31
1 is fixed by bending. Folded piece 3
The bending of 11 is performed by using a caulking jig or the like.

The bent piece 311 of this embodiment is formed by bending the distal end side while abutting the base end side on the end plate 320.

That is, when the end plate 320 is positioned on the tank plate 310, the base end side of the bent piece 311 abuts on the side surface of the end plate 320.
(At this time, there may be some clearance between the base end side of the bent piece 311 and the side surface of the end plate 320.) When the bent piece 311 is bent, the base end side is connected to the end plate 320. It is configured to be supported, and to bend the distal end side except the proximal end side.

Also, in the case of this embodiment, the bent piece 311 abutting on the end plate 320 is used for such bending.
Is set to be larger than the plate thickness t of the tank plate 310.

According to such a structure, the bent piece 31
1 can be easily folded and the tank plate 31
0 and the end plate 320 can be efficiently assembled.

As described above, according to the heat exchanger of the present embodiment, the tank plate and the end plate can be efficiently assembled by bending the bent pieces.

In particular, since the bent piece is bent at the distal end while the base end is in contact with the end plate, it can be easily bent.

If the whole bent piece is to be bent, a relatively strong processing pressure is required, and unnecessary deformation of the tank plate may be caused, which may cause a medium leakage. In the example, such a disadvantage can be efficiently avoided.

According to the heat exchanger of the present embodiment, the length of the bent piece abutting on the end plate is larger than the thickness of the tank plate when the bent piece is bent. Can be folded more easily.

That is, in the present invention, the length of the base end side of the bent piece abutting on the end plate can be sufficiently secured with respect to the thickness of the tank plate, and such bending can be further facilitated. .

Further, according to the heat exchanger of this embodiment, since a plurality of bent pieces are provided at the edge of the tank plate, the tank plate and the end plate are more accurately and firmly assembled with the plurality of bent pieces. be able to.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on.

As shown in these figures, a plurality of walls 312 projecting toward the core 200 are provided at the edge of the tank plate 310 of the present embodiment. However, these walls 3
Numerals 12 are provided between the plurality of bent pieces 311, respectively.

Since other configurations are the same as those of the above-described specific example, common members are denoted by the same reference numerals, and description thereof is omitted.

As described above, according to the heat exchanger of the present embodiment, since the wall protruding toward the core is provided at the edge of the tank plate, the gap formed between the tank and the fin is removed by the tank plate. Wall. Therefore, particularly when air is sent to the core, air leakage caused by the gap between the tank and the fin can be eliminated, and the heat exchange efficiency can be improved.

In particular, a side plate may be brazed to the wall of the tank plate. According to such a configuration, the strength of the heat exchanger can be reliably improved.

[0044]

According to the first aspect of the present invention, the core includes a tube made of a tube through which a medium flows and a fin mounted on the tube, and a tank to which an end of the tube is connected. In a heat exchanger that performs heat exchange of the medium by heat transmitted to the tank, the tank is obtained by assembling a semi-cylindrical tank plate and an end plate provided with a hole connecting an end of the tube, A bent piece for holding the end plate is provided at an edge of the tank plate, and the bent piece is a heat exchanger having a configuration in which a base end side is bent at a distal end side while being in contact with the end plate. According to this configuration, the tank plate and the end plate can be efficiently assembled by bending the bent piece.

According to a second aspect of the present invention, in the first aspect, at the time of bending the bent piece, the length of the base end side of the bent piece that is in contact with the end plate is equal to the length of the tank plate. The heat exchanger has a configuration larger than the plate thickness. According to such a configuration, the bent pieces can be bent more easily.

According to a third aspect of the present invention, there is provided a heat exchanger according to the first or second aspect, wherein a plurality of the bent pieces are provided at an edge of the tank plate. The tank plate and the end plate can be more accurately and firmly assembled by the plurality of bent pieces.

According to a fourth aspect of the present invention, in the heat exchanger according to any one of the first to third aspects, the edge of the tank plate is provided with a wall protruding toward the core. According to such a configuration, the gap formed between the tank and the fin can be covered by the wall of the tank plate.

[Brief description of the 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 main part of a tank according to a specific example of the present invention.

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

FIG. 4 is an explanatory view showing a tank plate and an end plate according to a specific example of the present invention.

FIG. 5 is a perspective view showing a main part of a tank according to a specific example of the present invention.

FIG. 6 is an exploded perspective view showing a main part of a tank according to a specific example of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Heat exchanger 200 Core 210 Tube 220 Fin 300 Tank 310 Tank plate 310a Hole 311 Folding piece 312 Wall 320 End plate 321 Hole 330 Partition plate 331 Projection 332 Step 400 Inlet 500 Outlet 600 Gas-liquid separator 700 Side plate d Length of base end side of bent piece abutting on end plate t Plate thickness of tank plate

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Katsushi Akiyama 39, Higashihara, Chiyo, Oji-gun, Osato-gun, Saitama Prefecture Inside of Xexel Valeo Climate Control (72) Inventor Jun Akaike, Chiyo-ji, Onan-gun, Osato-gun, Saitama 39 Higashihara F-term in Zexel Valeo Climate Control Co., Ltd. (Reference) 3L065 BA11 3L103 AA01 AA11 BB42 CC18 CC30 DD03 DD08 DD32 DD33 DD44 DD85 DD95

Claims (4)

[Claims] 1. A core comprising a tube through which a medium flows and a fin mounted on the tube, and a tank to which an end of the tube is connected, and heat exchange of the medium is performed by heat transmitted to the core. In the heat exchanger, the tank is formed by assembling a semi-cylindrical tank plate and an end plate provided with a hole connecting an end of the tube, and an end plate at an edge of the tank plate. A heat exchanger, wherein a bent piece is provided to hold the end piece, and the bent piece is bent at the distal end while the base end is in contact with the end plate. 2. When bending the bent piece,
The heat exchanger according to claim 1, wherein a length of a base end side of the bent piece abutting on the end plate is larger than a thickness of the tank plate. 3. The tank plate according to claim 1, wherein a plurality of bent pieces are provided at an edge of the tank plate.
The heat exchanger as described. 4. A wall portion protruding toward the core is provided at an edge of the tank plate.
4. The heat exchanger according to any one of claims 1 to 3.