JPH064234Y2 - Shroud fixing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to a fixing structure for a wind guide shroud that is attached to a heat exchanger such as a condenser of a vehicle air conditioner.

(Prior Art) Conventionally, as a fixing structure of this type of shroud, for example, a bracket for mounting is fixed to a heat exchanger by welding or the like, and is fixed to the bracket with bolts (for example, actual opening). (See Japanese Laid-Open Patent Publication No. 63-93421), and one in which a part of a tube is sandwiched to fix a bracket is known.

(Problems to be Solved by the Invention) However, the conventional method has a problem that the number of manufacturing steps of the heat exchanger increases and the cost increases. Further, since the mounting bracket is mounted by sandwiching the tube, there is a problem that a part of the heat exchange surface of the heat exchanger is blocked and the heat exchange rate is impaired.

Therefore, in view of the above problems, it is an object of the present invention to provide a shroud fixing structure that reduces the number of manufacturing steps of the heat exchanger and improves the heat exchange rate of the heat exchanger.

(Means for Solving the Problems) In order to achieve the above object, a shroud fixing structure according to the present invention has a heat exchanger in which a large number of flat tubes and fins are alternately arranged between a pair of header pipes. A structure for attaching a shroud to the shroud, wherein a tubeless portion without flat tubes is formed at both ends of a pair of header pipes of the heat exchanger, and the tubeless portion is fixed to the shroud and the shroud. The shroud is clamped by the bracket to fix the shroud to the heat exchanger.

(Operation) Therefore, the tubeless portions are provided at both ends of the pair of header pipes of the heat exchanger, and the tubeless portions are sandwiched between the shroud and the mounting bracket to fix the shroud. There is no need to provide a bracket on the heat exchanger, and the bracket does not close the heat exchange surface of the heat exchanger, which solves the above problem.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a heat exchanger 1 and a shroud 2 for guiding the heat.
And are shown.

In the heat exchanger 1, first and second header pipes 3 and 4 are erected parallel to each other, and an inlet pipe 6 for supplying a refrigerant to be heat-exchanged to the first header pipe 3 is provided with a second header pipe 2. The pipe 4 is provided with an outlet pipe 7 for discharging the refrigerant after heat exchange. A large number of flat tubes 9 and fins 10 are alternately arranged between the first and second header pipes 3 and 4, and the refrigerant flows through a refrigerant passage formed in the flat tubes 9. It is designed to exchange heat. Also,
At both ends of the first and second header pipes 3 and 4, there are provided tubeless portions 3a and 4a in which the flat tubes 9 are not arranged, and the shroud 2 described below is fixed by the tubeless portions 3a and 4a. It is supposed to be done.

The shroud 2 is composed of a flange 12 and a bulging portion 13. The flange 12 has a tubeless portion 3 of the first and second header pipes 3 and 4 of the heat exchanger 1 described above.
screw holes 12a for attaching mounting brackets 14 to be described later with bolts 15 near positions corresponding to a and 4a.
Is formed and the end portions of the portions parallel to the first and second header pipes 3 and 4 are bent to hold the holding portion 12b.
Are formed. On the other hand, the bulging portion 13 has a motor mounting portion 13a formed at the center thereof.
Further, a motor 17 for rotating the fan 16 is screwed with a screw 18. Further, for example, three air guide holes 13b are formed around the motor mounting portion 13a, and air is guided to the heat exchanger 1 through the air guide holes 13b. The shroud 2 includes a mounting bracket 14 described below.
It is configured to be fixed to the heat exchanger 1 by using four.

As shown in detail in FIG. 2, the mounting bracket 14 has a holding portion 14a bent in a semicircular shape, and a screw hole 14b for fixing the mounting bracket 14 to the shroud 2 described above. Has been done. The holding portion 14a has a shape corresponding to the tubeless portions 3a and 4a of the first and second header pipes 3 and 4 of the heat exchanger 1.

A method of fixing the shroud 2 to the heat exchanger 1 in the above configuration will be described with reference to FIG. In FIG. 3, the shroud 2 is fixed to the tubeless portions 3 a and 4 a of the first and second header pipes 3 and 4 of the heat exchanger 1. This is because the mounting bracket 14 is fixed to the flange 12 of the shroud 2 with the screw 15, so that the holding portion 14a of the mounting bracket 14 and the holding portion 12b of the flange 12 remove the tubeless portions 3a and 4a. It is carried out by holding. This allows shroud 2
Is fixed without blocking the heat exchange surface of the heat exchanger 1.

The second embodiment is shown in FIG. 4, and the difference from the first embodiment described above is that a mounting piece 14c for mounting the net 30 for stone protection is provided on the mounting bracket. Especially. Therefore, by using the brat 14A, the shroud 2 can be fixed to the heat exchanger 1 as in the first embodiment described above, and the stone-proof net 30 can also be attached. Since the other parts are the same as those in the first embodiment, the same reference numerals are given and the description thereof is omitted.

(Effect of the Invention) As described above, according to the present invention, the tubeless portions are provided at both ends of the pair of header pipes of the heat exchanger, and the tubeless portions are held by the shroud and the mounting bracket. Since the shroud is fixed, it is strong because the fixing is a header pipe, and the bracket for mounting and the mounting part of the shroud do not block the heat exchange surface of the heat exchanger, and heat exchange is effective. It is something that can be done.

[Brief description of drawings]

1 is an exploded perspective view of a shroud fixing structure according to a first embodiment of the present invention, FIG. 2 is a perspective view of a mounting bracket of the same, and FIG. 3 is a plan view showing the same shroud fixing structure. 4 and 5 are partial perspective views of a shroud fixing structure according to a second embodiment of the present invention. 1 ... Heat exchanger, 2 ... Shroud, 3, 4 ... 1st, 2nd
Header pipe, 3a, 4a ... No tube portion, 9 ... Flat tube, 10 ... Fin, 12 ... Flange, 14, 1
4A ... Bracket for mounting.

Claims (1)

[Scope of utility model registration request] 1. A structure for attaching a shroud to a heat exchanger comprising a large number of flat tubes and fins alternately arranged between a pair of header pipes, the both ends of the pair of header pipes of the heat exchanger. A tubeless portion having no flat tube is formed, and the tubeless portion is held by the shroud and a mounting bracket fixed to the shroud to fix the shroud to the heat exchanger. Characteristic shroud fixing structure.