JPH0942888A - Device for preventing noise of laminated type heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent noise generated from a heat exchanger due to its vibration mainly in a laminated type heat exchanger for an automobile. SOLUTION: There are provided a rubber absorbing member 4 aligned with an outer circumference of a spacer section 1 of an element 2 of a laminated type heat exchanger 3 and a metallic spring member 5 installed at the rubber absorbing member 4. Accordingly, a noise prevention device 13 is positively installed at an end part of the laminated type heat exchanger 3 by the rubber absorbing member 4 and a metallic spring member 5 and then noise generated from it is absorbed by the rubber absorbing member 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called drone cup type laminated heat exchanger for automobiles, which prevents generation of noise due to its vibration.

[0002]

2. Description of the Related Art A laminated heat exchanger is known in which each element is formed in the middle and has a communicating hole in the plane of both ends thereof, and each element is joined at both ends thereof via a spacer portion. . Such a laminated heat exchanger was mounted on a vehicle and used as an intercooler or the like.

[0003]

However, in such a laminated heat exchanger, the inside of each element is formed in a flat shape with cavities, and noise is generated when vibration is applied, and particularly the vibration is at the resonance frequency. When they matched, a loud sound was emitted.
Therefore, an object of the present invention is to provide a noise prevention device having a simple structure and capable of effectively preventing noise due to vibration in such a laminated heat exchanger, and in order to achieve the object, the following constitution is adopted. .

[0004]

The noise preventing device for a laminated heat exchanger according to the present invention is such that the outer circumferences of both longitudinal end portions are closed in an arc shape, and communication holes are provided in the flat surfaces of both end portions. The spacer portion 1 is formed at the hole edge portion of the communication hole,
A noise suppressing device for a laminated heat exchanger 3 comprising a plurality of elements 2 each having a flat flow path provided therein, and each element 2 being liquid-tightly joined to each other at the spacer portion 1. A rubber absorbent body 4 having a flat C-shape and having an inner circumference aligned with the outer circumference of the spacer portion 1 formed between the elements 2 and fitted on the outer circumference of the spacer portion 1.
And a metal spring body 5 which is fitted or attached to the outer circumference of the rubber absorber 4 and urges the rubber absorber 4 in a direction to sandwich the C-shaped opening.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, each embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a use explanatory diagram of a first embodiment of the noise prevention device. The laminated heat exchanger 3 to which this noise suppression device is attached is shown in a perspective view cut at an intermediate position in the longitudinal direction. This laminated heat exchanger 3 has a plurality of elements 2. Although not shown in detail in this drawing, each element 2 is formed by stacking a pair of upper and lower elongated plate-shaped plates in opposite directions, and is formed into a tube shape having a flat cross section. Is closed in an arc shape. Along with that
A communication hole (not shown) is formed in both upper and lower flat surfaces of the both ends, and the peripheral portion of the communication hole swells to form the spacer portion 1.
Is configured. An inner fin 8 is provided inside the element 2, and an outer fin 7 is arranged between the elements 2, and each contact portion is fixed by brazing or soldering. The communication hole on the lower surface of the lowermost end of the element 2 in the stacking direction is closed, and the connection bracket 6 is joined to the communication hole of the uppermost element 2.

Thus, as an example, air hoses for charge air are attached to the respective connection brackets 6,
High-temperature charge air or the like flows inside each element 2. Then, the cooling air is blown to the outer surface side of the element 2 and the outer fin 7 to cool the charge air. A rubber absorber 4 is provided which is aligned with the spacer portion 1 of the element 2 in the laminated heat exchanger 3 thus configured and is detachably fitted therein. The rubber absorber 4 is formed in a C-shape in a plane, and a metal spring body 5 made of a leaf spring is fitted on the outer periphery thereof, and the rubber absorber 4 and the metal spring body 5 are bonded to each other by means such as adhesion. The noise prevention device 13 is formed by being joined. And this metal spring body 5
Are urged in the direction of narrowing the opening of the rubber absorber 4. Therefore, the noise suppression device 13 is fitted on the spacer portion 1 of each element 2. Such noise prevention device
13 are used by the number of spacers 1 in the laminated heat exchanger 3.

Next, FIG. 2 shows another embodiment of the noise suppressing device 13 of the present invention. The difference of this embodiment from that of FIG.
An outer groove 10 is provided on the outer circumference of the rubber absorber 4 and a metal spring body 5 is provided.
Is a wire rod having a circular cross section, and the metal spring body 5 has an outer groove.
It is to be fitted into 10. Next, FIG. 3 shows a third embodiment of the present apparatus. This apparatus has an outer groove on the upper end surface of the rubber absorbent body 4.
10 is formed, and the metal spring body 5 made of a C-shaped wire is fitted therein. Next, FIG. 4 shows the fourth of the device.
This is an embodiment, and the rubber absorbent body 4 in this embodiment is composed of a continuous body having a C-shaped cross section which is elongated in the vertical direction, and a plurality of outer grooves 10 are formed on the outer circumference thereof and an inner groove 11 is formed on the inner circumference thereof. The inner groove 11 is formed so as to be aligned with the outer peripheral surfaces of both ends of each element 2. Along with that, C formed between each inner groove 11
The letter-shaped protrusions are aligned with the spacer portion 1. In this embodiment, the rubber absorbent body 4 has both C-shaped ends projecting longer than the circumferential length of the inner groove 11. Then, the metal spring bodies 5 are fitted into the respective outer grooves 10.

Next, FIG. 5 shows a fifth embodiment of the present apparatus. In this embodiment, a metal spring body 5 having a U-shaped metal plate is used.
A pair of rubber absorbers 4 are attached to the inner surface.
A plurality of inner grooves 11 are formed on the inner surface of each rubber-made absorber 4, and a taper portion is formed at the tip of the rubber-made absorber 4.
Twelve are provided. Next, FIG. 6 shows a sixth embodiment of the present apparatus. The difference of this embodiment from the fifth embodiment is that the rubber absorbent body 4 is integrally formed. Next, FIG. 7 shows a seventh embodiment of the present apparatus. In this embodiment, the rubber absorber 4 and the metal spring body 5 are detachably separated from each other, and the rubber absorber 4 has a C-shape. An enlarged portion is formed at the tip, and the tip of the inner groove 11 extends in a tooth shape on the inner surface of the enlarged portion. The rubber absorbers 4 of the fourth to seventh examples are easily formed because they are integrally formed in multiple stages.

[0009]

The noise suppressing device for the laminated heat exchanger according to the present invention has a flat C-shaped rubber absorber 4 fitted on the outer periphery of the spacer portion 1 and a rubber absorber 4 fitted on the outer periphery of the rubber absorber 4. Alternatively, it has a metal spring body 5 that is attached and urges the rubber absorber 4 in a direction to narrow the opening. And rubber absorber 4
Has an inner circumference that matches the outer circumference of the spacer portion 1 formed between the elements 2, so that the rubber absorber 4 reliably absorbs the vibration generated between the elements 2 and 2, and the laminated heat exchanger is While preventing noise due to other factors such as vibration,
It is possible to prevent cracks and the like in the brazing part due to the vibration and provide a highly reliable one.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of use of a first embodiment of the noise prevention device.

FIG. 2 is a second embodiment of the noise prevention device.

FIG. 3 is the same third embodiment.

FIG. 4 is a fourth embodiment of the same.

FIG. 5 is the same fifth embodiment.

FIG. 6 is a sixth embodiment of the same.

FIG. 7 shows the seventh embodiment.

[Explanation of symbols]

 1 Spacer 2 Element 3 Laminated Heat Exchanger 4 Rubber Absorber 5 Metal Spring 6 Connection Bracket 7 Outer Fin 8 Inner Fin 10 Outer Groove 11 Inner Groove 12 Taper 13 Noise Reduction Device

Claims (1)

[Claims] 1. The outer circumferences of both longitudinal end portions are closed in an arc shape, and communication holes are provided in the flat surfaces of both end portions.
A spacer portion 1 is formed at the hole edge portion of the communication hole, and has a plurality of elements 2 in which a flat flow path is provided, and each element 2 is liquid-tightly joined to each other by the spacer portion 1. In the noise suppression device for the laminated heat exchanger 3, the flat surface C having an inner circumference matching at least the outer circumference of the spacer portion 1 formed between the elements 2 and fitted to the outer circumference of the spacer portion 1 A rubber absorber 4 having a V-shape, and a metal spring body 5 which is fitted or attached to the outer periphery of the rubber absorber 4 and urges the C-shaped opening in a direction sandwiching the C-shaped opening. Noise suppression device for stacked heat exchangers.