JP2573419Y2 - Support structure for inlet and outlet pipes of 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 support structure for an inlet / outlet pipe in a parallel flow type heat exchanger.

[0002]

2. Description of the Related Art Generally, in a parallel flow type heat exchanger, tubes and fins are alternately stacked, a header tank is connected to both ends of the stacked tubes, and a header tank has an inlet for a heat exchange medium. Pipe and outlet pipe are connected. Then, the heat exchange medium flows through a flow path in which a plurality of tubes form a group of tubes between the inlet pipe and the outlet pipe.

[0003] Also, a joint is provided at the tip of the entrance / exit pipe, and the entrance / exit pipe is arranged so that both joints are located close to each other in order to facilitate connection work with each connection pipe. . Therefore, these pipes must be fixed to the heat exchanger because each pipe length is a predetermined length. Conventionally, for fixing an entrance / exit pipe, for example, one described in Japanese Utility Model Laid-Open No. 1-170888 is generally known. According to this type of support structure, a stay having a screw insertion hole is fixed to a predetermined portion of the heat exchanger, for example, an end plate or a header tank by integral molding or brazing, and a clip is wound around each pipe. Then, the clip is fixed to the stay by passing the base end of the clip through the screw insertion hole of the stay with a screw.

[0004]

However, according to the conventional entrance / exit pipe support structure as described above, brazing,
Since a separate pipe holding clip was attached to the stay fixed to the heat exchanger by welding, screw fastening, or the like, there was a drawback that the number of parts increased and the number of work steps increased. In addition, when an iron clip is used, electric corrosion occurs between the clip and an aluminum pipe, so a special surface treatment is required to prevent the corrosion, and bending due to assembly of a different component is caused. There was a problem.

Accordingly, an object of the present invention is to provide a support structure for an inlet / outlet pipe of a heat exchanger which can reduce the number of parts and the number of working steps and prevent occurrence of electrolytic corrosion and bending.

[0006]

According to the present invention, a plurality of tubes are stacked in parallel with each other, a header tank is connected to both ends of the plurality of tubes, and an inlet pipe and an outlet pipe of a heat exchange medium are connected to the header tank. Parallel flow type heat exchanger, the inlet pipe or outlet
Attach the bracket that holds the pipe to the side
To be mounted in a pair of insertion holes formed in the
The bracket is formed in a U-shape with a stay portion provided with a locking protrusion formed by cutting and raising , and curved so as to follow a half circumference of a peripheral surface of the inlet pipe or the outlet pipe in connection with the stay portion. and a clip portion formed integrally, the
The side plate has front and rear facing walls and
The pair of insertion holes are formed in the opposed wall portions of the bracket, and the inlet pipe or the outlet pipe is fitted into the clip portion of the bracket, and the stay portion is connected to a side plate.
The heat exchanger having a configuration in which the locking projection of the stay portion is brought into contact with a side plate by being inserted into the pair of insertion holes, and the inlet / outlet pipe is supported on the heat exchanger by the bracket by integral brazing. This is a support structure for the entrance pipe.

[0007]

The pipe is temporarily fixed by being fitted into a clip portion of a bracket connected to a stay portion of the bracket fixed to a predetermined portion of the heat exchanger.

The stay portion is positioned and temporarily fixed by being inserted into a pair of insertion holes formed in the side plate of the heat exchanger so that the locking projection of the stay portion abuts on the side plate. In other words, this positioning and temporary
To stop, the locking projection of the stay abuts against the side plate
Position, and the stay part is inserted into the pair of insertion holes.
The rotation is regulated in combination with the rotation.

After being temporarily fixed in this manner, the brazing is performed integrally, and the inlet and outlet pipes are supported by the heat exchanger by the brackets.

In such a support structure, since the stay portion and the clip portion of the bracket are integrated, the number of parts is reduced and the number of working steps is reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below. In the heat exchanger 1 of the present embodiment, as shown in FIG. 1, a plurality of flat tubes 2 are stacked in parallel with each other via wavy fins 3, and header tanks 4 are provided on both sides of the stacked flat tubes 2. It is connected. At the upper and lower ends of the heat exchanger 1, side plates 5 having a U-shaped cross section are arranged, and the stacked flat tubes 2 are reinforced. In FIG. 1, reference numeral 6 denotes a blind cap for closing the upper and lower openings of the header tank 4. A base end of an inlet pipe 7 is connected to an upper side of the inlet header tank (right side in the figure) 4, and a base end of an outlet pipe 8 is connected to a lower side of the outlet header tank (left side in the figure) 4. It is connected. In this embodiment,
A partition plate 9 is disposed at a predetermined position in both header tanks 4, and is configured as a five-pass heat exchanger in which the flow path meanders four times between the inlet pipe 7 and the outlet pipe 8.

At the end of the inlet pipe 7, an inlet joint 11 is provided.
An outlet joint 12 is provided at the end of the outlet pipe 8.
Are provided so that they can be connected to the respective connection pipes. The inlet pipe 7 and the outlet pipe 8 are disposed on the surface of the heat exchanger 1 on the air flow side, and the distal end side of the inlet pipe 7 is disposed so as to be substantially horizontal near the upper side plate 5. The distal end of the outlet pipe 8 is disposed so as to be substantially vertical in the vicinity of the header tank 4 on the outlet side. A horizontal portion on the distal end side of the inlet pipe 7 is fixedly supported on the upper side plate 5 by a bracket 13. On the other hand, a vertical portion on the distal end side of the outlet pipe 8 is fixedly supported on the outlet header tank 4 by another bracket 14.

As shown in FIG. 2, the bracket 13 of the inlet pipe 7 has a stay 15 formed in a flat plate shape,
A U-shaped clip portion 16 which is curved so as to follow a half circumference of the peripheral surface of the inlet pipe 7 is integrally connected and formed. As shown in FIGS. 2 to 4, the stay portion 15 has an insertion hole 1 formed in the side plate 5 in a rectangular shape.
7 and 17 and fixed by integral brazing. That is, the insertion holes 17 1 , 17 2
5a and 5b are formed as a pair on the side plate 5
And these shapes correspond to the cross-sectional shape of the stay 15. In addition, the stay 15 is provided with a locking projection 18 formed by cutting and raising to facilitate the insertion work. As shown in FIGS. 2 to 4, the clip portion 16 is attached to the inlet pipe 7 and fixed to the inlet pipe 7 with the screw 19, so that the clip portion 16 is inserted through the distal end portion of the clip portion 16 and the corresponding portion. Hole 20
And a screw hole 21 are provided.
The inlet pipe 7 is fixed to the clip part 16 by fastening a screw to the screw hole 21 through 9.

Therefore, since each bracket is formed by integrally connecting the stay fixed to the heat exchanger and the clip supporting the inlet / outlet pipe, the number of parts is reduced and the number of working steps can be reduced. Further, since the stay portion needs to be brazed, the stay portion and the clip portion are made of aluminum, so that occurrence of electrolytic corrosion and bending can be prevented.

In order to provide a plurality of clips on one stay, the structure shown in FIGS. 5 and 6 can be used. Brackets 36 and 37 shown in FIGS.
Is configured such that clip portions 32 and 33 connected to a stay portion 31 support each pipe in two stages up and down on one side.

Although the embodiment has been described by taking the case where the inlet pipe 7 is supported by the bracket 13 as an example, it goes without saying that the outlet pipe can also be supported.

[0017]

As described above, according to the present invention, a plurality of tubes are stacked in parallel with each other, a header tank is connected to both ends of the plurality of tubes, and an inlet pipe and an outlet pipe of a heat exchange medium are connected to the header tank. in but connected parallel flow type heat exchanger, the inlet pipe also
Attach the bracket that holds the outlet pipe to the heat exchanger
To be inserted into a pair of insertion holes formed in the plate.
Thus, the bracket has a stay portion provided with a locking projection formed by cutting and raising , and is curved and U-shaped so as to be connected to the stay portion and follow a half circumference of a peripheral surface of the inlet pipe or the outlet pipe. Formed integrally with the formed clip part
And the side plate includes front and rear opposing walls.
Side Moni, this opposed wall portion of the pair of insertion holes are formed, together with the said clip portion of the bracket to fit the inlet pipe or outlet pipe, the stay portion
A heat exchanger having a configuration in which the engagement protrusion of the stay portion is inserted into the pair of insertion holes of the plate to abut against the side plate, and the inlet / outlet pipe is supported on the heat exchanger by the bracket by integral brazing. It is a support structure of the entrance and exit pipe.

Therefore, the pipe is temporarily fixed by being fitted into the clip portion of the bracket connected to the stay portion of the bracket fixed to a predetermined portion of the heat exchanger, and the stay portion is connected to the heat exchanger. Formed on the side plate
Positioning and temporary fixing are performed by inserting the engaging projections of the stay portion into the pair of insertion holes and abutting the locking projections of the stay portion with the side plate. The pipe can be supported very easily and easily.

As described above, according to the present invention, the stay part fixed to the heat exchanger and the clip part fixing the entrance / exit pipe are integrally connected, so that the number of parts is reduced and the number of working steps is reduced. Things.

[Brief description of the drawings]

FIG. 1 is a front view of a heat exchanger according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a bracket of an inlet pipe.

FIG. 3 is a front view of a bracket of the inlet pipe.

FIG. 4 is a left side view in FIG.

FIG. 5 is a side view of the bracket according to the present invention.

FIG. 6 is a side view of the bracket according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Tube 3 Wavy fin 4 Header tank 5 Side plate 6 Blind cap 7 Inlet pipe 8 Outlet pipe 9 Partition plate 11 Inlet joint 12 Outlet joint 13 Bracket 14 Bracket 15 Stay part 16 Clip part 17 Insertion hole 18 Locking projection Reference Signs List 19 screw 20 insertion hole 21 screw hole 31 stay part 32 clip part 33 clip part 36 bracket 37 bracket

Claims (1)

(57) [Scope of request for utility model registration] 1. A parallel flow type heat exchanger in which a plurality of tubes are stacked in parallel with each other, a header tank is connected to both ends of the plurality of tubes, and an inlet pipe and an outlet pipe of a heat exchange medium are connected to the header tank. A bracket for holding said inlet pipe or outlet pipe
A pair of insertion holes formed in the side plate of the heat exchanger
Be those attached to the bracket, and the stay portion provided with a locking projection formed by cutting and bending, curved so as to follow the half of the peripheral surface of the inlet pipe or outlet pipe is connected to the stay unit And a U-shaped clip portion is integrally formed, and the side plate includes front and rear opposing wall portions.
, This pair of insertion holes in opposing walls are formed, with the said clip portion of the bracket to fit the inlet pipe or outlet pipe, Sai said stay portion
And inserting the insertion protrusions of the stay portions into contact with the side plates by inserting into the pair of insertion holes of the metal plate, and supporting the inlet / outlet pipe to the heat exchanger by the bracket by integral brazing. Structure of the inlet and outlet pipes of the heat exchanger.