JPH0596786U - Heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] Assembling is possible without using a special jig, and integrated brazing is possible. [Structure] In a parallel flow type heat exchanger in which a plurality of tubes are arranged in parallel between header tanks and fins are interposed between the tubes, the header tank has an outer peripheral portion in a range of 180 ° or more in a circumferential direction. An aluminum bracket including a fitting portion to be fitted, a slit formed in the fitting portion in the circumferential direction and into which the tube is inserted, and an arm portion extending from the fitting portion and attached to the vehicle body side. Was integrally brazed to the header tank and the tube.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a heat exchanger in which a heat exchanger such as a condenser is attached to a vehicle body side via a bracket.

[0002]

[Prior Art]

 Conventionally, when a heat exchanger such as a parallel flow type condenser is attached to the vehicle body side, a: a bracket made of steel plate is used (for example, actual Kaihei No. 2-36785), b: similar to the heat exchanger. It is designed to be mounted on the vehicle body side using an aluminum bracket.

In the case of a, the fitting portion is fitted to the outer periphery of the header tank of the heat exchanger, the insertion piece is inserted between the tubes arranged in parallel, and the side portions of the tubes and fins arranged in parallel are brought into contact with each other. The heat exchanger after brazing is fitted with the fitting portion in the header tank, and a plate member is applied so that the tube and the fin are sandwiched between the abutting piece and the bolt. The bracket is fixed and the bracket is attached to the vehicle body.

In the above b, after the heat exchanger is integrally brazed, an aluminum bracket is fixed to the header tank or the like by brazing, and the bracket is mounted to the vehicle body side through this bracket. When attaching the aluminum bracket together with the heat exchanger, use a special bracket-dedicated jig to support the bracket or temporarily attach it to secure the bracket to the heat exchanger. There is.

[0005]

[Problems to be solved by the device]

 However, in the above case a, the abutment piece for attaching the bracket to the heat exchanger blocks some of the tubes and fins for heat exchange, resulting in a decrease in heat exchange capacity. Further, a part of the fin needs to be cut out in order to insert the bolt for attaching the contact piece, which results in an increase in the number of working steps. Furthermore, since the bracket is attached with bolts, the number of work steps increases.

In the above-mentioned b, since the bracket is made of aluminum, it is possible to perform brazing. However, in the case of retrofitting, brazing work in a post process is required, while in the case of integral brazing, it is special However, there was a problem that the number of work steps increased because of the need for jigs and temporary attachment.

Therefore, an object of the present invention is to provide a mounting structure of a heat exchanger having a bracket, which does not require a dedicated jig or temporary mounting and enables a single brazing by a simple assembly. .

[0008]

[Means for Solving the Problems]

 The heat exchanger of the present invention is a parallel flow type heat exchanger in which a plurality of tubes are arranged in parallel between header tanks, and fins are interposed between these tubes. A fitting portion that fits in a range of 180 ° or more in the circumferential direction, a slit that is formed in the fitting portion in the circumferential direction and into which the tube is inserted, and an arm that extends from the fitting portion and is attached to the vehicle body side. An aluminum bracket consisting of a part and the part is integrally brazed to the header tank and the tube. Here, aluminum means aluminum and aluminum alloys.

[0009]

[Action]

 To assemble the bracket to the header tank, after the tubes and fins have been assembled to the header tank, fit the fitting part of the bracket from the outer periphery to the header tank and insert the tube into the slit of the fitting part. Push the tube against the back end of the slit. In this state, the fitting portion is positioned by the tube in the vertical direction and the circumferential direction. Therefore, integrated brazing is possible without using a special jig. The direction of the arm portion of the bracket is set in the circumferential direction by inserting a tube into the end of the slit and abutting the tube. Furthermore, since the fitting portion of the bracket is joined to the header tank and the tube by brazing, there is no problem that a part of the fin is cut out or a part of the tube is closed.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a main part of the heat exchanger 1, and FIG. 2 is a perspective view of the main part. In the figure, 2 is a header tank having a circular cross section, 3 is a flat tube laminated in parallel with each other, 4 is a corrugated fin interposed between the flat tubes, and 5 is an upper end and a lower end of the laminated flat tube 3. Reference numeral 6 denotes a side plate disposed on the vehicle body, and 6 denotes a bracket for fixing the heat exchanger 1 to the vehicle body side with bolts or the like.

As shown in FIG. 3, the bracket 6 is composed of a fitting portion 7 fitted to the outer periphery of the header tank 2 and an arm portion 8 attached to the vehicle body side. As shown in FIG. 4, the fitting portion 7 is formed in such a length that the fitting angle θ is the outer peripheral angle of the header tank 2 and is 180 ° or more (θ> 180 °). ing. Further, the fitting portion 7 and the arm portion 8 are manufactured by press molding with the same aluminum material as the header tank 2, and as shown in FIGS. The width is formed across the three flat tubes 3.

Further, the fitting portion 7 is formed with a shallow slit 9 into which the flat tube 3 is inserted. The slits 9 are formed in the width of the flat tube 3, and in the present embodiment, three slits 9 are formed corresponding to the flat tube 3. These slits 9 are formed to have a length corresponding to the mounting direction of the arm portion 8, and in this embodiment, the arm portion 8 is oriented so as to be parallel to the flat tube 3. The fitting portion 7 is joined to the header tank 2 and the flat tube 3 by brazing.

When viewed from the front of the heat exchanger 1, the arm portion 8 is bent from the fitting portion 7 so as to extend from the front of the header tank 2 to the outside, and the vehicle body is provided on the tip side thereof. A bolt insertion portion 8a that can be attached to the side is provided.

To assemble such a bracket 6 to the heat exchanger 1, first, the flat tube 3, the corrugated fins 4 and the side plate 5 are assembled to the header tank 2, and then the fitting portion of the bracket 6 is assembled. 7 is attached to the header tank 2 by fitting it from the outer peripheral direction. In this case, since the fitting portion 7 has a length of 180 ° or more in the circumferential direction, it does not come off from the header tank 2. Then, by moving the bracket 6 in the axial direction of the header tank 2 and rotating it clockwise at a predetermined position of the header tank 2 in FIG. 4, the flat tube 3 is inserted into each slit 9 of the fitting portion 7 at the slit end. Insert it until it hits the part, and assemble. In this case, the vertical positioning of the bracket 6 is maintained by the slit 9 and the flat tube 3 inserted therein, and the bracket 6 is oriented in the circumferential direction at the slit end and the flat tube abutting against the slit. 3 and 3. Therefore, even without a special assembly jig, the bracket can be securely assembled to the header tank, and it is possible to integrally assemble it with other members such as flat tubes, and as a result, work such as retrofitting is unnecessary. Work man-hours can be reduced.

The bolt insertion portion 8a is not limited to the elongated hole whose end is opened as shown in FIG. 3, but may be a bolt hole 8b having an internal thread as shown in FIG. In this case, if the bolt hole 8b is formed by a burring formed at the time of forming a hole during press molding, the manufacturing work can be simplified.

Next, another embodiment of the present invention will be described. In the bracket of this embodiment, as shown in FIGS. 6 to 9, the arm portion 8 is bent so as to extend to the inside of the front surface of the heat exchanger 1 when viewed from the front, and is parallel to the flat tube 3. Therefore, a deep slit is provided in the fitting portion 7. Further, the arm portion 8 is provided with a bolt hole 8b.

Further, as shown in FIG. 9, the fitting portion 7 is formed to have a length capable of fitting with the header tank 2 in a range of 180 ° or more in the circumferential direction, and a deep slit 9 is formed. Then, in the bracket 6 of the present embodiment, the fitting portion 7 is fitted to the header tank 2 from the outer periphery to determine the supporting position, and the flat tube 3 is fitted in the slit 9 by rotating counterclockwise as shown in FIG. Is inserted, and the fitting portion 7 is rotated until the flat tube 3 abuts the slit end, whereby the vertical and circumferential positioning is performed, and the bracket portion has the same effect as the embodiment of the previous example. Since it does not protrude to the outside of the side of the header tank, it can be applied to narrow installation locations.

In both of the embodiments described above, the header tank has a circular cross section, but the header tank is not limited to a circular cross section, but may have an elliptical shape.

[0019]

[Effect of the device]

 As described above, according to the present invention, since the bracket has the fitting portion that fits into the header tank from the outer peripheral portion, and the slit into which the tube is inserted in the fitting portion, the bracket is made of the aluminum material. When assembling the bracket to the header tank, the fitting, slits and tubes allow the bracket to be positioned vertically and circumferentially, thus eliminating the need for special jigs and facilitating assembly work. Becomes Also, since the bracket is made of aluminum material, it is possible to braze together with the heat exchanger in the furnace. In addition, the fitting part of the bracket is integrally brazed to the header tank and the tube, which eliminates the need for conventional contact pieces and back plates, and facilitates mounting. The heat exchange tube has the advantage that the original heat exchange capacity can be secured without blocking a part of the tube.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing a main part of a heat exchanger.

FIG. 3 is a perspective view of a bracket.

4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is a plan view showing a bracket according to another embodiment.

FIG. 6 is a front view showing a main part of a heat exchanger according to another embodiment.

FIG. 7 is a perspective view showing a main part of a heat exchanger.

FIG. 8 is a perspective view of a bracket.

9 is a sectional view taken along the line IX-IX in FIG.

[Explanation of symbols]

 1 Heat Exchanger 2 Header Tank 3 Tube 4 Fins 6 Bracket 7 Fitting Part 8 Arm Part 9 Slit

Claims (1)

[Scope of utility model registration request] 1. A parallel flow type heat exchanger in which a plurality of tubes are arranged in parallel between header tanks and fins are interposed between the tubes, and the header tank has an outer peripheral portion of 180 ° or more in the circumferential direction. Made of aluminum, which includes a fitting portion that fits in a range, a slit that is formed in the fitting portion in the circumferential direction and into which the tube is inserted, and an arm portion that extends from the fitting portion and is attached to the vehicle body side. The heat exchanger in which the bracket of 1 is integrally brazed to the header tank and the tube.