JPH0552578U - Heat exchanger header-pipe partition plate assembly structure - Google Patents

Abstract

(57) [Summary] [Purpose] Even when the partition plate is formed by punching a flat plate material, it is possible to reliably prevent the position shift or drop of the partition plate in the temporarily assembled state. Provide an assembly structure. A projection in which a height dimension including a wall thickness of the partition plate 4 is slightly larger than a corresponding dimension of the cut 1d in a portion corresponding to an inner surface of the cut 1d of each header-pipe 1 by deforming a part of the partition plate 4. 4c is formed, the partition plate 4 is press-fitted into the cut 1d, and the projection 4c is pressed against the inner surface of the cut 1d.
The temporarily fixed state of the partition plate 4 is maintained.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a header-pipe partition plate assembly structure for a heat exchanger used as various air conditioners, vehicle radiators, and the like.

[0002]

[Prior Art]

 Conventionally, a pair of header pipes arranged in parallel with each other at intervals, a plurality of heat medium distribution tubes having both ends connected to the header pipes, and interposed between the tubes. In a so-called parallel flow type heat exchanger consisting of fins, the header-pipe interior is divided by a partition plate in the longitudinal direction, and the heat medium flow path is a meandering shape that alternately flows the heat medium into each header-pipe. It is known to form a. Further, the partition plate is inserted into a notch provided on the side surface of the header-pipe, and is temporarily assembled with other components by clad brazing material for joining and brazed in a high-temperature furnace.

By the way, as the header-pipe partition plate assembling structure, one disclosed in Japanese Utility Model Application No. 3-14578 is known. According to this invention, one side of the partition plate is gradually inclined downward toward the insertion end side of the partition plate, and the other end side is provided with a step portion that is locked to the inner edge of the cut of the header-pipe. The sloped bulging portion for preventing slippage formed is provided, and the stepped portion and the header-pipe notch are engaged with each other for temporary fixing, and then integrally brazed.

[0004]

[Problems to be solved by the device]

 In many cases, the partition plate is formed by punching aluminum flat plate material into a substantially disc shape.However, this does not mean that the partition plate is loosely inserted in the cut of the header-pipe, so it is in the temporarily assembled state. When the above heat exchanger is loaded into the furnace, there is a problem that the partition plate is apt to be displaced or come off due to vibration or the like. Therefore, although such a problem can be solved by providing the retaining swelling swelling portion disclosed in the above-mentioned Japanese Patent Application No. 3-14578, the retaining sloping swelling portion is provided in the partition plate. Since the structure has complicated unevenness in the thickness direction, the partition plate cannot be formed by punching a flat plate material and must be processed by a molding method. As a result, the manufacturing process is complicated, the production rate is reduced, and the cost is increased.

The present invention has been made in view of the above problems, and an object of the present invention is to displace or drop the partition plate in the temporarily assembled state even when the partition plate is formed by punching a flat plate material. It is to provide a structure for assembling a header-pipe partition plate for a heat exchanger capable of reliably preventing the above.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a circumferential notch in a header pipe for a heat exchanger, and inserts a partition plate that divides the header pipe in the longitudinal direction into the notch to fix it. In the header-pipe partition plate assembly structure for an exchanger, a part of the partition plate is deformed and a height dimension including a partition plate thickness at a portion corresponding to an inner surface of the cut is slightly larger than a corresponding dimension of the cut. A large protrusion is formed, and the partition plate is press-fitted into the notch so that the protrusion is pressed against the inner surface of the notch.

[0007]

[Action]

 According to the header-pipe partition plate assembly structure for a heat exchanger of the present invention, when the partition plate is inserted into the cutout of the header pipe, the projection of the partition plate hinders the insertion. By press-fitting, the projection of the partition plate is pressed against the inner surface of the notch, and the partition plate is temporarily fixed.

[0008]

【Example】

 1 to 3 show an embodiment of the present invention.

In the figure, reference numeral 1 denotes a pair of header pipes arranged at intervals from each other, each of which is a circular pipe made of aluminum. The upper and lower ends of each header-pipe 1 are closed by a cap 1a, and a plurality of tube connection holes 1b are formed in each opposing surface at intervals in the longitudinal direction of the header-pipe 1. .. A pipe 1c for inflowing the heat medium is connected to the upper part of one header-pipe 1 (on the left side in FIG. 3), and a cut 1d for inserting a partition plate is located slightly below the pipe 1c around the header-pipe 1. Formed in the direction. Further, a heat medium outflow pipe 1e is connected to the lower part of the other header-pipe 1 (on the right side in FIG. 3), and a cut 1d similar to the above is formed slightly above it.

Reference numeral 2 denotes a plurality of heat medium distribution tubes connected to each header-pipe 1, each having a flat shape and having both ends inserted into the connection holes 1b of each header-pipe 1 so as to be mutually connected. Are arranged at intervals.

Reference numeral 3 denotes a heat-radiating fin interposed between the tubes 2, each of which is formed in a wave shape and has an upper end and a lower end in contact with each tube 2.

Reference numeral 4 denotes a partition plate that divides the inside of each header-pipe 1 in the longitudinal direction, and is formed by punching a flat plate material such as aluminum. The partition plate 4 has a large-diameter portion 4a corresponding to the outer diameter of the header-pipe 1 and a small-diameter portion 4b corresponding to the inner diameter of the large-diameter portion 4a so as to fit into the cut 1d of each header pipe 1. The notch 1d is closed by the peripheral portion. Further, a protrusion 4c protruding toward one surface of the partition plate 4 is provided at the center of the peripheral portion of the large diameter portion 4a, and the protrusion 4c is formed by deforming the opposite side into a concave shape by a tool such as a punch. . The height of the projection 4c including the thickness of the partition plate 4 is slightly larger than the corresponding dimension of the cut 1d.

In assembling this heat exchanger, after brazing materials for joining the above-mentioned respective components are clad and temporarily assembled, they are brazed in a high temperature furnace. At that time, when each partition plate 4 is inserted into the cut 1d of each header pipe 1, the projection 4c of the partition plate 4 hinders the insertion, but by press-fitting the partition plate 4 against this, As shown in FIG. 2, the projection 4c of the partition plate 4 is pressed against the inner surface of the cut 1d, and the temporarily fixed state of the partition plate 4 is maintained.

In the heat exchanger configured as described above, the heat medium flowing in from the pipe 1c of the header-pipe 1 on one side passes through the tube 2 above the partition plate 4 and the header on the other side. It flows into the pipe 1. Also in the other header-pipe 1, the heat medium returns to the one header-pipe 1 through the tube 2 above the partition plate 4, and also below the partition plate 4 of the other header-pipe 1. It again flows into the other header-pipe 1 through the tube 2 and flows out from the pipe 1e.

As described above, according to the present embodiment, a part of the partition plate 4 is thickened at the peripheral portion of the large diameter portion 4a of the partition plate 4, that is, the portion corresponding to the cut 1d of each header pipe 1. The partition plate 4 is temporarily fixed by forming a protrusion 4c that is deformed in the vertical direction and pressing the protrusion 4c against the cut 1d. The partition plate 4 formed by punching a flat plate material can be used, and the manufacturing process is not complicated and the cost is low. Can be produced.

FIG. 4 shows another embodiment of the present invention. FIG. 4 (a) shows a partition plate 4 having a projection 4d formed by cutting and raising a part thereof, and FIG. 4 (b) shows a partition plate. The plate 4 is provided with a projection 4e formed by partially cutting the peripheral end face of the partition plate 4 in the thickness direction, and FIG. 4 (c) shows the peripheral end face of the partition plate 4. A projection 4f formed by partially forming a dent and bulging a part of the partition plate 4 in the thickness direction is shown in FIG. 4 (d). The projection 4g is formed by forming a plurality of chevrons by hitting.

[0017]

[Effect of the device]

 As described above, according to the partition plate assembly structure of the heat exchanger header-pipe of the present invention, it is of course possible to reliably prevent the partition plate from being displaced or falling off in the temporarily assembled state. Since a partition plate formed by punching a flat plate material can be used, the manufacturing process does not become complicated, and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a heat exchanger according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a heat exchanger.

FIG. 3 is an overall perspective view of a heat exchanger

FIG. 4 is a perspective view of a partition plate according to another embodiment of the present invention.

[Explanation of symbols]

1 ... Header-pipe, 1d ... Notch, 2 ... Tube, 3
... fins, 4 ... partition plates, 4c, 4d, 4e, 4f, 4g
… Protrusions.

Claims (1)

[Scope of utility model registration request] 1. A heat exchanger header-pipe partition plate in which a circumferential notch is formed in a heat exchanger header-pipe, and a partition plate that divides the header-pipe in the longitudinal direction is inserted into and fixed to the notch. In the assembly structure, a part of the partition plate is deformed to form a protrusion at a portion corresponding to the inner surface of the cut, the height dimension including the wall thickness of the partition plate is slightly larger than the corresponding dimension of the cut plate. Is inserted into the cut and the projection is brought into pressure contact with the inner surface of the cut. A header-pipe partition plate assembly structure for a heat exchanger.