JPS6218869Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a heat exchanger used in a condenser or evaporator incorporated in an air conditioner for an automobile.

(Prior art) Capacitor 1 used in automotive air conditioning equipment
As shown in FIGS. 1 and 2, a single flat tube 2 through which a refrigerant flows is bent in a meandering manner,
A wave-shaped heat dissipation fin 3 is interposed in this straight portion, and an end plate 5 having a U-shaped cross section is attached to the bent ends 4 on both sides, and a connector portion is inserted into a through hole 6 (see Fig. 2) formed in this end plate 5. 7, and refrigerant supply conduit 8.
and the flat tube 2 are connected.

A bracket 9 is fixed to the side surface of the end plate 5 to fix the capacitor 1 to the vehicle body.

In the figure, 10 is a fan, 11 is a fan shroud, and 12 is a flat motor.

This bracket 9 has conventionally been made by bending a steel plate at right angles, as shown in FIG. A through hole 9a is bored in the vehicle body so as to be attached to the vehicle body with a bolt or the like. The bracket 9 is bent or stretched appropriately because the mounting position of the capacitor 1 may be shifted in directions such as front and rear, left and right, and up and down of the vehicle depending on the type of vehicle body.

(Problems to be solved by the invention) As described above, since the conventional bracket 9 is bent at right angles or undergoes various deformations, stress is concentrated at the bent portions, etc., and as a result, the bracket 9 itself may be deformed or cracks may occur in a portion thereof, resulting in problems with durability.

Furthermore, since the refrigerant supply conduit 8 is only connected to the condenser 1 at the connector section 7,
Due to the vibration of the vehicle body, stress is concentrated at the connection portion between the conduit 8 and the connection portion 7 of the connector portion 7, and there is a risk that the conduit 8 may be deformed or cracks may occur in the connection portion or the like.

The present invention has been made to solve the drawbacks and problems associated with the above-mentioned conventional technology, and provides a heat exchanger that has excellent vibration resistance and also has strength at the connecting portion between the refrigerant supply conduit and the connector section. The purpose is to

[Structure of the invention] (Means for solving the problem) In order to achieve the above object, the present invention has a flat tube through which a refrigerant flows, which is bent in a meandering manner, and the straight portion of the flat tube is formed into a wavy shape. A heat exchanger body is formed by interposing heat dissipation fins and attaching end plates to both bent ends of a flat tube, and connecting a connector part provided at the end of the flat tube to a refrigerant supply conduit. In the heat exchanger that is attached to the vehicle body via a bracket fixed to a side surface, the bracket is formed into a hollow triangular prism shape through which the refrigerant supply conduit is inserted, and one side of the bracket is fixed to the end plate. It is characterized by the following.

(Function) In this way, in the present invention, since the bracket has a triangular shape, it not only improves the strength of the bracket itself, but also prevents deformation or cracking due to concentration of stress on a part of the bracket. In addition, by holding the refrigerant supply conduit in the hollow part of the bracket, the vibrations of the condenser and the conduit connected to it will match, causing deformation or cracking of the joint between the refrigerant supply conduit and the connector. can be prevented from occurring.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 3 is an enlarged perspective view of the main parts of the bracket of the heat exchanger according to the present invention, and the same members as those shown in FIG.

In this heat exchanger 20, one end surface 21a of a bracket 21 bent into a hollow triangular shape is fixed to the side surface of an end plate 5 covering a bent end of a flat tube by means such as spot welding. The free end of this bracket 21 is aligned with the tip of the bent bracket 21, and a through hole 13 for attaching the heat exchanger to the vehicle body is provided here. A refrigerant supply conduit 8, which has a connector part 7 attached to one end thereof and communicates with the flat tube 2, is curved at a substantially right angle and extends through the hollow part 22 in the hollow triangular bracket 21. . Hollow part 22 in this bracket 21
The size of the bracket 21 may be appropriately selected so as to hold the refrigerant supply conduit 8, and the bracket 21 having the hollow part 22 of a predetermined size almost integrates the condenser and the refrigerant supply conduit 8, and can hold the refrigerant supply conduit 8. By matching the vibrations, unnecessary force is not applied to the connector portion 7, and cracks and the like can be prevented.

Furthermore, if the mounting position of the capacitor 1 is shifted in the longitudinal direction of the vehicle body depending on the type of vehicle body, the bracket 21 may be bent and formed into a flat hollow triangular shape as shown in FIG. Since the shape is supported at three points, the support strength is also excellent.

[Effects of the invention] As described above, according to the invention, the bracket for attaching the heat exchanger main body to the vehicle body is bent and formed into a hollow triangular shape through which the refrigerant supply conduit passes, so that the bracket itself is extremely strong. This structure prevents deformation or cracking due to concentration of stress on a part of the bracket, and if the refrigerant supply conduit is held in the hollow part of the bracket, the condenser and this The vibrations of the conduits connected to the refrigerant supply conduit and the connector portion can be prevented from deforming or cracking.

[Brief explanation of the drawing]

Fig. 1 is an overall perspective view of a general capacitor, Fig. 2 is a partially cutaway front view showing a corner of the capacitor, Fig. 3 is a perspective view of a main part showing an embodiment of the present invention, Fig. 4 FIG. 2 is a schematic plan view showing the structure of a bracket in another embodiment of the present invention. 2... Flat tube, 5... End plate, 20... Heat exchanger, 21... Bracket, 22... Hollow part.

Claims (1)

[Scope of utility model registration request] A flat tube through which a refrigerant flows is meanderingly bent, corrugated heat dissipation fins are interposed in the straight portion of the flat tube, and end plates are attached to both bent ends of the flat tube. In the heat exchanger, a heat exchanger main body formed by connecting a provided connector portion and a refrigerant supply conduit is attached to the vehicle body via a bracket fixed to the side surface of the end plate, wherein the bracket is connected to the refrigerant supply conduit. 1. A heat exchanger characterized in that the conduit is formed into a hollow triangular prism shape through which the conduit is inserted, and one side of the conduit is fixed to the end plate.