JP2565662Y2 - Air cooler 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 an air cooler such as an air-cooled intercooler used for a supercharged engine. More specifically, the present invention relates to a mounting structure of a vehicle-mounted air cooler in which a core has a thermal expansion coefficient different from that of an air cooler body supporting frame.

[0002]

2. Description of the Related Art An air cooler of this type comprises an air cooler main body having an upper tank, a lower tank and a core, and a frame connecting the two tanks to support the air cooler main body. The mounting portions of both tanks are fixed to this frame by bolts. In the air cooler, the frame is formed of high-strength steel, while the body of the air cooler is formed of aluminum to reduce the weight, or is formed of copper to improve heat conduction. Aluminum and copper have a larger coefficient of thermal expansion than steel. That is, aluminum and copper have a linear expansion coefficient approximately twice that of steel. Therefore, for example, when the air cooler is an air-cooled intercooler, and high-temperature intake air flows into the intercooler due to an increase in engine rotation, the intercooler body thermally expands more than the frame.

[0003]

However, since the mounting portions of both tanks are firmly fixed to the frame by bolts, the core in the vicinity of the mounting portion cannot thermally expand, and as a result, the tube constituting the core is distorted. This caused problems such as deformation of the tube or cracking of the tube. An object of the present invention is to provide a highly durable air cooler mounting structure that does not damage the air cooler main body even if the coefficient of thermal expansion of the air cooler main body is different from that of the frame.

[0004]

The configuration of the present invention for achieving the above object will be described with reference to FIGS. 1 and 3 corresponding to an embodiment. The present invention relates to an air cooler body 10 having an upper tank 11, a lower tank 12, and a core 13, and both tanks 1 and 2 sandwiching the core 13 between the tanks 11 and 12.
A frame 21 that supports the air cooler body 10 by connecting the air coolers 1 and 12 to each other, and a through hole 2 provided in a mounting portion 22 of both tanks.
This is an improvement of an air cooler which includes a bolt 26 for fixing the mounting portion 22 to the frame 21 via 2a, and a coefficient of thermal expansion of the core 13 is different from a coefficient of thermal expansion of the frame 21. The characteristic configuration is such that the elastic body 23 is provided around the bolt shaft portion 26a, and the outer diameter of the through hole 22a in all or a part of the through hole 22a in any or all of the mounting portions 22 of both tanks.
An annular elastic body 23 substantially equal to the inner diameter of 2a is inserted,
The shaft 26a of the bolt is inserted into the elastic body 23 so that the bolt 26
The two tanks 11 and 1 are attached to
That is, one or all of the mounting portions 22 are fixed to the frame 21 via the elastic body 23.

[0005]

When the thermal expansion of the air cooler main body is different from the thermal expansion of the frame, the elastic body compresses and deforms to absorb the expansion of the air cooler main body or the frame.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. In this example, an intercooler that cools intake air of a supercharged engine mounted on a vehicle will be described. As shown in FIGS. 1 to 3, the intercooler main body 10 has an upper tank 11, a lower tank 12, and a core 13.
The core 13 includes a number of tubes 14 and a number of fins 16. These tanks 11 and 12 and tube 1
4 and fins 16 are formed of aluminum. A fin 16 formed in a corrugated shape is fixed to the outer peripheral surface of the tube 14 over substantially the entire length of the tube.
And the fins 16 are arranged alternately.

The upper tank 11 is connected to the core 13 via an upper plate 17, and the lower tank 12 is connected to the core 13 via a lower plate 18. Both tanks 11,
Numeral 12 is connected by a pair of channel-shaped frames 21 and 21 on both sides of the tank with the core 13 interposed therebetween. Specifically, two mounting portions 2 protruding integrally with the tank body on both sides of the upper tank 11 and the lower tank 12
The channels 22 are arranged so that the channel-shaped frame 21 encloses them. The frame 21 is formed of steel,
The air cooler body 10 is supported.

The frame 21 and the mounting portion 22 are provided with through holes 21a and 22a penetrating at the same position. The through hole 22a of the mounting portion 22 has a large diameter portion 22b and a small diameter portion 2b.
2c. An annular rubber 23 for absorbing thermal deformation is inserted into the large diameter portion 22b. The material of the rubber 23 is selected from fluoro rubber, silicone rubber, EVA (ethylene vinyl acetate copolymer), EPDM (ethylene propylene rubber), acrylic rubber and the like. The outer diameter of the rubber 23 is substantially equal to the diameter of the large diameter portion 22b. The inner diameter C of the rubber 23 is equal to the diameter of the through hole 21 a of the frame 21, and
smaller than the diameter D of c. The collar 24 is inserted into the through hole 21 a of the frame 21 and the through hole 22 a of the attachment portion 22, and the shaft portion 26 a of the bolt 26 is inserted into the collar 24. A nut 27 is screwed into the screw portion of the bolt 26. Color 2
The outer peripheral surface of 4 is in close contact with the rubber 23, and a gap E is provided with the small diameter portion 22c. 28 is a washer. By screwing the bolt 26 with the nut 27, the bolt 26
Frame 21 is attached to the frame 21 by sandwiching the collar 24, the intercooler body 10 through the mounting portion 22
To be fixed.

In such an intercooler mounting structure in which the air cooler main body 10 has a rubber mount structure with respect to the frame 21, when the temperature of the intercooler main body 10 rises due to the operation of the engine, the thermal expansion causes the broken line F in FIG. As shown in G, the plates 17, 18 in close contact with the tanks 11, 12 are displaced. At the four mounting portions 22 of the tanks 11 and 12 fixed to the frame 21 having a smaller coefficient of thermal expansion than the core 13 with bolts 26, the mounting portions 22 are more likely to thermally deform than the frame 21. Here, as shown by the broken line in the enlarged view of FIG.
3 is compressed and deformed, and the small-diameter portion 22c of the mounting portion 22 and the collar 2
The gap E with the outer peripheral surface of No. 4 is reduced, so that the thermal stress is relaxed and this thermal deformation is absorbed.

In the above example, the rubber 23 is attached to the mounting portion 22.
Is provided in a part of the through hole 22a.
In other words, it may be provided over substantially the entire length of the collar 24. The air cooler of the present invention is not limited to the intercooler used for the supercharged engine, but may be another air cooler. Further, the present invention is not limited to the material of the core but may be applied to an air cooler having a core made of a material having a larger coefficient of thermal expansion than the frame, for example, copper. The present invention can also be applied when the coefficient of thermal expansion of the air cooler body is smaller than the coefficient of thermal expansion of the frame. In addition, the elastic body may not be provided in all of the four mounting portions 22 of the upper tank 11 and the lower tank 12, and may be provided only in the left and right mounting portions 22 of the lower tank 12, for example. Further, the elastic body is not limited to rubber, and another elastic material may be used.

[0011]

As described above, according to the present invention, since the air cooler main body is fixed to the frame via the elastic body, high-temperature air flows into the air cooler main body, and the air cooler main body thermally expands. Even if only the frame expands more than the air cooler main body, the elastic body relaxes the thermal stress, so that the tubes and fins constituting the core are not deformed or cracked. As a result, a durable air cooler free from thermal damage even when used for a long time can be obtained.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a mounting portion of an intercooler main body according to one embodiment of the present invention, as viewed from an arrow A in FIG. 1;

FIG. 2 is a sectional view taken along line BB of FIG. 1;

FIG. 3 is a front view of the intercooler.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Intercooler main body (air cooler main body) 11 Upper tank 12 Lower tank 13 Core 21 Frame 22 Tank mounting part 23 Rubber (elastic body) 26 Bolt 26a Bolt shaft

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper tank (11), a lower tank (12) and a core.
(13) having an air cooler body (10), and both tanks (11,
12) by connecting the frame (21) supporting the air cooler body (10) and the mounting portion (22) through a through hole (22a) provided in the mounting portion (22) of the two tanks. A bolt (26) fixed to a frame (21), wherein the core (13) has a coefficient of thermal expansion different from the coefficient of thermal expansion of the frame (21). The outer diameter of all or a part of the through hole (22a) in (22) is the inner diameter of the through hole (22a).
An annular elastic body (23) is inserted into the elastic body (23), and the shaft (26a) of the bolt is inserted into the elastic body (23) and the bolt (26) is attached to the frame (21). A mounting structure for an air cooler, wherein any or all of the mounting portions (22) of the tank are fixed to the frame (21) via the elastic body (23).