JPH058277U - Installation structure of inlet and outlet pipes of heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] Eliminates the extension of the entrance and exit pipes and eliminates the need for temporary fixing means during assembly. [Structure] Tubes and fins are alternately laminated, a header tank is connected to both ends of the laminated tubes, and the header tank is composed of an end plate and a tank plate which are divided in a radial direction. In a parallel flow type heat exchanger in which an inlet / outlet pipe is connected to the plate, an opening along the air flow direction is formed in the tank plate of the header tank by press molding, and the base end of the inlet / outlet pipe is formed in this opening. The parts were fitted and joined.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure for a header tank and an inlet / outlet pipe in a parallel flow type heat exchanger.

[0002]

[Prior Art]

 A parallel flow type heat exchanger has tubes and fins stacked alternately, and a header tank is connected to both ends of the stacked tubes, and an inlet pipe for introducing a cooling medium and an outlet pipe for discharging a refrigerant are connected to the header tank. And are connected for communication. Further, for attaching the inlet / outlet pipe to the header tank, for example, the one described in JP-A 1-291098 is known. In this mounting structure, a circulation hole is formed in one of the peripheral walls of the header tank and the inlet / outlet pipe, and a cut hole is formed in the other peripheral wall so that the peripheral edge is an arc shape that fits one outer peripheral surface. The periphery is abutted against and joined to the outer peripheral surface around the circulation hole, and the amount of overhanging when viewed from the front surface of the heat exchanger is reduced by the amount of the cut hole, and the heat exchanger can be made compact.

[0003]

[Problems to be solved by the device]

 However, in the mounting structure described in the above publication, even if the amount of overhang in the outer shape of the heat exchanger viewed from the front can be reduced, there is a limit in terms of its structure. Further, although the positioning can be performed by the cut holes, a temporary fixing means is required when integrally joining by brazing, welding, etc., which increases the number of working steps.

In view of the above, according to the present invention, when viewed from the front of the heat exchanger, the inlet / outlet pipe does not extend from the side portion, and the inlet / outlet port of the heat exchanger can eliminate the need for temporary fixing means during assembly. It is intended to provide a pipe mounting structure.

[0005]

[Means for Solving the Problems]

 The heat exchanger's inlet / outlet pipe mounting structure has a structure in which tubes and fins are alternately stacked, a header tank is connected to both ends of the stacked tubes, and the header tank is radially divided into an end plate and a tank. A parallel flow type heat exchanger comprising a header plate and an inlet / outlet pipe connected to the tank plate of the header tank, wherein an opening along the air flow direction is pressed on the tank plate of the header tank. It is formed by molding, and the base end of the inlet / outlet pipe is fitted and joined to this opening.

[0006]

[Action]

 Therefore, the opening is formed along the air flow direction, and the inlet / outlet pipe is attached in the same direction, so that the inlet / outlet pipe does not extend outward when viewed from the front of the heat exchanger. Further, since the inlet / outlet pipe is fitted and assembled in the opening, it is possible to eliminate the need for a temporary fixing mechanism at the time of assembling.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the heat exchanger 1 of the present embodiment has flat tubes 2 and wavy fins 3 alternately stacked, and header tanks 4 are connected to both ends of the stacked flat tubes 2 respectively. Has been. In the figure, 5 indicates a side plate. As shown in FIG. 3, the header tank 4 has a structure in which it can be divided into an end plate 6 and a tank plate 7 in the radial direction, and a large number of tube insertion holes 8 provided in the end plate 6 are provided with the above-mentioned structure. The flat tube 2 is inserted and joined. In FIG. 1, 9 indicates a blind cap that closes the end opening of each header tank 4.

Further, as shown in FIG. 1, the header tank 4 is connected to an inlet pipe 10 for inflowing a refrigerant and an outlet pipe 11 for outflowing the refrigerant so that a partition provided in the header tank 4 is connected. The plate 12 causes a plurality of meandering refrigerants to flow between the inlet pipe 10 and the outlet pipe 11. As shown in FIG. 2, the inlet / outlet pipes 10 and 11 are joined by fitting into an opening 13 provided in the tank plate 7 of the header tank 4. That is, the opening 13 is formed in the tank plate 7 at the same time by the press working at the time of forming the tank plate. The opening 13 is formed in the cooling air flow direction of the heat exchanger 1. In this embodiment, it is provided so as to face the upstream direction of the air flow direction, that is, the front side of the heat exchanger. Further, in order to secure an opening area required for a predetermined refrigerant flow rate, it is formed in a vertically long rectangular shape. Such an opening shape can be easily formed, for example, by providing the tank plate 7 with a slit 7a as shown in FIG. 4 and using a predetermined press die. Further, the respective proximal end sides 10a, 11a of the entrance / exit pipes 10, 11 are formed in a vertically long rectangular shape which can be inserted into and fitted into the corresponding opening portions 13, as shown in FIG. Then, the header tank 4 is fitted into the opening 13 of the header tank 4 by insertion and assembled. Therefore, the inlet and outlet pipes are positioned in the same direction, the inlet and outlet pipes do not project from the heat exchanger viewed from the front, and no special temporary fixing jig is required. You can

Next, another embodiment will be described. In the above-described embodiment, the case where the opening is formed so as not to project from the side portion of the header tank has been described as an example, but the present invention is not limited to this, and depending on the case, the opening may slightly project as shown in FIG. The same effect can be obtained even if it is provided. In other words, when reducing the volume in the header tank, naturally the width dimension in the header tank when viewed from the front also becomes smaller, so it is necessary to secure an opening area corresponding to the refrigerant flow rate. 13 has to be slightly extended from the side of the tank plate 7 of the header tank 4. Further, even when the vertical opening is not required to secure a predetermined opening area, it is provided so as to slightly project from the side.

The shape of the opening is not limited to a quadrangle when viewed from the front, but may be another shape. In this case, a perfect circle is not formed due to necessity of press molding, but a semi-elliptical shape or the like can be formed. Even in this case, the position of the inlet / outlet pipe can be determined by the fitting.

[0011]

[Effect of the device]

 As described above, according to the present invention, since the opening for mounting the inlet / outlet pipe is formed along the air flow direction, the inlet / outlet pipe fitted in this opening is viewed from the front of the heat exchanger. Almost no protrusion to the outside, which is advantageous in terms of installation space. Further, since the inlet / outlet pipe is fitted and assembled in the opening, the inlet / outlet pipe can be positioned and the temporary fixing mechanism at the time of assembling can be eliminated.

[Brief description of drawings]

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

FIG. 2 is an exploded perspective view showing a mounting structure of an inlet / outlet pipe.

FIG. 3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a plan view of a tank plate before pressing.

FIG. 5 is a sectional view corresponding to FIG. 3 according to another embodiment.

[Explanation of symbols]

 1 heat exchanger 2 tube 3 fin 4 header tank 6 end plate 7 tank plate 10 inlet pipe 11 outlet pipe 13 opening

Claims (1)

[Claims for utility model registration] [Claim 1] Tubes and fins are alternately laminated,
Header tanks are connected to both ends of the stacked tubes,
In a parallel flow type heat exchanger in which a header tank is composed of an end plate and a tank plate that are divided in the radial direction, and an inlet / outlet pipe is connected in communication with the tank plate of this header tank, in the tank plate of the header tank An inlet / outlet pipe mounting structure for a heat exchanger, characterized in that an opening along the flow direction is formed by press molding, and the base end of the inlet / outlet pipe is fitted and joined to the opening.