JP2597199Y2 - Heat exchanger connector mounting structure - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a connector provided between a header tank and an external pipe of a parallel flow type heat exchanger in which a plurality of tubes are stacked.

[0002]

2. Description of the Related Art Conventionally, in a parallel flow type heat exchanger, a plurality of tubes and fins are alternately laminated, and a header tank is connected to both ends of the laminated tubes. The upper and lower openings of each of these header tanks are closed by blind caps, and between the inflow port and the outflow port provided in the header tank, the heat exchange medium meanders a plurality of times. Is provided with a partition plate for separating the inside of the header tank.

[0003] Further, a connector in which a connector is provided between an inlet pipe or an outlet pipe provided in a header tank and an external pipe is known (Japanese Utility Model Laid-Open No. 3-112656).

A connector in this type of heat exchanger is provided so as to easily connect a pipe to each header tank, and when connecting the pipe to the connector, each connector is fixed to the header tank.

As shown in FIG. 11, the connector 24 described in the above publication has a connecting portion (not shown) connecting a connecting pipe 25 connected to a predetermined portion of the header tank 4 and an external pipe. And a concave portion 27 formed in a concave shape following the outer surface of the header tank 4 is directly fitted to the outer surface of the header tank 4, and is fixed by brazing, welding, or the like.

[0006] As shown in FIG. 12, a bracket 28 is attached around the header tank 4.
A connector 24 is attached to the connector 8 by screwing, a connecting pipe 25 is attached to the connector 24, and an external pipe is connected.

[0007]

However, according to the connector mounting structure by screwing shown in FIG. 12 described above, the number of parts is increased and the number of assembling operations is increased, so that the manufacturing cost is increased.

Further, according to the connector mounting structure described in the above publication shown in FIG. 11, since the heat capacity of the connector is larger than that of the other parts, when the connector is fitted into the concave portion and brazed, the connector is not used. By the time the temperature rises to the predetermined temperature, the temperature of other parts such as the header tank rises, and the brazing material flows, and there is a problem that the brazing failure of the connector occurs. If such a brazing defect occurs, rework is performed by torch welding or the like after brazing, but in the case of a conventional connector mounting structure, the tip of the torch is difficult to enter the main part. This made it difficult to rework.

Further, according to the conventional mounting structure of the connector fitted to the outer surface of the header tank, there is a problem that the connector moves around the header tank, and it is difficult to connect the external piping smoothly.

Therefore, according to the present invention, when the connector is fixed to the outer surface of the header tank by brazing or welding, the tip of the torch can be easily inserted into a main part and easily reworked. It is an object of the present invention to provide a connector mounting structure which enables the above.

[0011]

According to the connector mounting structure of the present invention, a plurality of tubes and fins are alternately stacked,
A connector mounting structure for a parallel flow heat exchanger in which a header tank is communicatively connected to both ends of the stacked tubes, and a connector is attached to the header tank via a connecting pipe, wherein the connector is connected via the connecting pipe. And a rod member provided on the connector is fixedly attached to or engaged with the header tank, and the rod member is attached to the header tank.
However, for the connection position of the connecting pipe to the header tank,
At least 90 degrees toward the center of the header tank
A connector mounting structure for a heat exchanger with a remote configuration
You.

[0012]

When the heat exchanger is brazed, a rod member provided on the connector is fixed or engaged with the header tank, and the connector is attached to the header tank via a connecting pipe.

In this case, since the rod member provided on the connector is fixed or engaged with the header tank and the connector is mounted on the header tank via the connecting pipe, a required gap is provided between the connector and the header tank. The gap makes it easier to insert the tip of the torch into the main part when reworking the formed brazing defect after brazing, and the reworking operation becomes easy. Further, the rotation of the connector is prevented by the rod member provided on the connector, and the connection work is facilitated when the external piping is connected. Above all, the header tank of the rod member
Is connected to the header tank of the connecting pipe.
The angle toward the center of the header tank is small
Are 90 degrees apart from each other, so the connector
Retention can be made better. Further, since it is not necessary to form a mating surface corresponding to the outer peripheral surface of the header tank on the connector as in the related art, the processing shape of the connector can be simplified and the processing cost can be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a parallel flow heat exchanger of the present embodiment, FIG. 2 is a side view showing a connector attached to a header tank, FIG. 3 is a perspective view showing a connector attached to a header tank, and FIG. FIG. 2 shows a plan sectional view of the connector attached to the tank.

The heat exchanger 1 comprises a plurality of flat tubes 2
And the corrugated fins 3 are alternately laminated, and header tanks 4 are respectively connected to both ends of the laminated flat tubes 2, and upper and lower openings of each header tank 4 are closed by blind caps 5. In addition, the laminated flat tubes 2
The flat tube 2 and the wavy fin 3
In order to reinforce this, a side plate 6 having a U-shaped cross section is disposed between the header tanks 4.

As shown in FIGS. 2 to 4, the header tank 4 includes an end plate 7 and a tank plate 8 divided in a radial direction.
Is connected to a connecting pipe 9 for an inlet, and the other header tank 4 is connected to a connecting pipe 10 for an outlet. And
A partition plate 11 is provided at a required location in both the header tanks 4, and a heat exchange medium is meandered a plurality of times between the inlet connection pipe 9 and the outlet connection pipe 10.

A connector 12 is connected to the connecting pipe 9 for the inlet and the connecting pipe 10 for the outlet. As shown in FIGS. 3 and 4, each of these connectors 12 is formed in a rectangular shape, and has a communication passage 13 formed therein. The connection surface to which the external pipe is connected is provided with an opening 14 of the communication path 13 and a screw hole 15 for mounting the pipe, and the connection pipe 9 or 10 is provided in the communication path 13.
Are connected so as to communicate with each other, and the respective connectors 12 are attached to the header tank 4 by integral brazing via the connecting pipes 9 or 10.

The connector 12 further includes a header tank 4
Is formed integrally with the connector 12 and the header tank 4 with the tip of the projection 16 abutting against the front of the header tank 4 by integral brazing. 4, gaps T1 and T2 at required intervals are formed as shown in FIG.

When the heat exchanger 1 is brazed, the connecting pipes 9 and 10 of the header tank 4 are connected to the respective connectors 1.
2 and the connector 12 is fixed to each header tank 4.

Therefore, the protrusion provided on the connector abuts on the header tank, and the connector is attached to the header tank via the connecting pipe, so that a required gap is formed between the connector and the header tank. Therefore, when reworking a brazing defect after brazing, the tip of the torch can be easily inserted into a main part by the gap, and the reworking operation becomes easy. Further, since it is not necessary to form a mating surface corresponding to the outer peripheral surface of the header tank on the connector as in the related art, the processing shape of the connector can be simplified and the processing cost can be reduced. Further, since the tip of the protruding portion protruding from the connector is fixed to the header tank, the connector is prevented from rotating when the external pipe is connected, and the connection work of the external pipe becomes easy.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 5 is a perspective view showing the connector attached to the header tank, and FIG. 6 is a plan view showing the connector attached to the header tank.

In the connector mounting structure of this embodiment, the connector 12 is mounted on the header tank 4 via the connecting pipe 9 or 10 similarly to the above-described embodiment, and the pin 17 is used instead of the protrusion of the above-described embodiment. Is used.

That is, as shown in FIGS. 5 and 6,
A pin 17 is placed on the portion of the connector 12 facing the header tank 4.
The header tank 4 is provided with an engaging portion 19 having an engaging hole 18 for engaging with the tip of the pin.

When the connector 12 is mounted, the pin 17 is protruded from the connector 12, and the tip of the pin 17 is engaged with the engaging hole 18 of the engaging portion 19 of the header tank 4 to connect the connecting pipe 9 or The connectors 10 are connected to each other, and the connector 12 is attached to the header tank 4 to perform integral brazing.

Therefore, the connector is attached to the header tank via the connecting pipe, and a gap of a required interval is formed between the connector and the header tank. The clearance facilitates insertion of the tip of the torch and facilitates reworking.

Also, since the pins protruding from the connector are engaged with the engaging portions of the header tank, the engagement of the pins prevents the connector from rotating when the external piping is connected.
Connection work of the external piping becomes easy.

Further, a third embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a perspective view showing a connector attached to the header tank, and FIG. 8 is a plan view showing the connector attached to the header tank.

In the connector mounting structure of this embodiment, the connector 12 is mounted on the header tank 4 through the connecting pipes 9 and 10 similarly to the above embodiment, and the connector 12 has a protrusion 21 for preventing rotation. Is provided.

That is, the header tank 4 of the connector 12
The two projecting portions 21, 21 are protrudingly provided at a position facing the front side, and the distal ends of these projecting portions 21 are in contact with the inner side surface of the header tank 4 located between the laminated flat tubes 2. It is provided in.

When the connector 12 is attached, the connector 12 is attached to the header tank 4 via the connecting pipes 9 and 10 while the protrusion 21 is in contact with the inner surface of the header tank 4. As in the second embodiment, a required gap is formed between the connector 12 and the header tank 4, and the effect of preventing the connector 12 from rotating can be obtained.

In place of the projection 21 shown in FIGS. 7 and 8, a pin 22 as shown in FIGS. 9 and 10 can be provided.

In the connector structure shown in FIGS. 9 and 10, two pins 22 and 22 are protruded from the connector 12 by press-fitting, and the distal ends of these pins 22 contact the inner surface of the header tank 4. The rotation is prevented.

[0033]

As described above, according to the present invention, the connector is attached to the header tank via the connecting pipe, and a required gap is formed between the connector and the header tank. When the brazing defect is repaired, the gap makes it easy to insert the tip of the torch into the main part, and the repair work becomes easy.

Also, since the bar member provided on the connector is fixed or engaged with the header tank, the bar member prevents the connector from rotating when the external piping is connected.
Connection work of the external piping becomes easy. In particular,
The connection position to the header tank is the header tank of the connecting pipe.
To the center of the header tank, relative to the connection position
Because the angle is at least 90 degrees apart,
The detent of the connector can be made better. Further, since it is not necessary to form a mating surface corresponding to the outer peripheral surface of the header tank on the connector as in the related art, the processing shape of the connector can be simplified and the processing cost can be reduced.

[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 side view showing a connector attached to a header tank.

FIG. 3 is a perspective view showing a connector attached to a header tank.

FIG. 4 is a plan sectional view showing a connector attached to a header tank.

FIG. 5 is a perspective view showing a connector attached to a header tank according to a second embodiment of the present invention.

FIG. 6 is a plan view showing a connector attached to the header tank.

FIG. 7 is a perspective view showing a connector mounted on a header tank according to a third embodiment of the present invention.

FIG. 8 is a plan view showing a connector attached to the header tank.

FIG. 9 is a perspective view showing a connector mounted on a header tank according to a fourth embodiment of the present invention.

FIG. 10 is a plan view showing a connector attached to the header tank.

FIG. 11 is a perspective view showing a connector attached to a header tank according to a conventional example.

FIG. 12 is a perspective view showing a connector attached to a header tank according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat exchanger 2 Tube 3 Fin 4 Header tank 9, 10 Connecting pipe 12 Connector 16, 17, 21, 22 Bar member

Claims (1)

(57) [Scope of request for utility model registration] 1. A parallel flow heat exchanger in which a plurality of tubes and fins are alternately stacked, a header tank is connected to both ends of the stacked tubes, and a connector is attached to the header tank via a connecting pipe. In the connector mounting structure of the container, the connector is provided separately from the header tank via the connection pipe, and a rod member provided on the connector is fixed or engaged with the header tank and mounted .
The mounting position of the rod member to the header tank is
For the connection position to the header tank,
A connector mounting structure for a heat exchanger, wherein an angle facing a center direction is separated by at least 90 degrees .