JPH09287598A - Fitting construction for compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce generation of vibration sound by interposing elastic bodies and damping materials between a base fitted with a compressor and the leg parts of a compressor. SOLUTION: In the fitting construction on the front side of a compressor, an upper side damping material 51 formed thicker than a lower side damping material is provided between an upper spring receiver 13 and a washer 16, and a lower side damping material 52 is provided between a spacer 8 and a unit base 6. In the fitting construction on the rear side, the upper side damping material 51 formed thicker than the lower side damping material is provided between the upper spring receiver 13 and the washer 16, and the lower side damping material 52 is provided between the spacer 8 and the unit base 6. At starting the compressor, vibration transmitted from a leg part to the upper side damping material 51 through the upper spring receiver 13 is absorbed with the upper side damping material 51, and vibration added to the lower side damping material 52 is absorbed with the lower side damping material 52, and hence vibration transmitted to the unit base 6 is reduced so as to restrain vibration of the unit base 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compressor mounting structure arranged in a cold storage such as a refrigerated showcase or a freezer.

[0002]

2. Description of the Related Art A conventional compressor mounting structure of this type is disclosed, for example, in Japanese Patent Laid-Open No. 7-19169 (F04).
B41 / 00) and the like. A structure for mounting such a compressor will be described with reference to FIGS. 4 (a), 5 (a) and 7. FIG. FIG. 4A is a sectional view of a mounting structure on the front side of a conventional compressor. FIG.
(A) is sectional drawing of the attachment structure at the rear side of the conventional compressor. FIG. 7 is a side view of a conventional compressor.

In FIG. 7, a lower leg of the compressor 1 is provided with a rod-like front leg 2 having a front face opened on the front side, for example.
Further, for example, a rod-shaped rear leg portion 3 having an opened lower surface is provided on the rear side, and the front leg portion 2 and the rear leg portion 3 are attached to a unit base 6 which is a base, and the compressor 1 is It is mounted on the unit base 6.

The mounting structure of the front leg portion 2 is shown in FIG.
A bolt 7 is inserted into the unit base 6 from below and stands upright. The lower end of the bolt 7 is formed with a collar portion 7 a that abuts the lower surface of the unit base 6. . Then, while being fitted in the bolt 7, two spacers 8 and a lower spring receiver 9 are sequentially placed on the upper surface of the unit base 6. Further, on the lower spring receiver 9, two small spacers 11 having a diameter smaller than that of the spacer 8 are placed in the central portion thereof, and a spring 12 which is a spring is placed in the peripheral portion thereof.

An upper spring receiver 13 is placed on the spring 12, and the upper spring receiver 1
A front leg portion 2 is attached to 3. Also, bolt 7
The upper end of the penetrating through the spacer 8, the lower spring receiver 9, the small spacer 11 and the upper spring receiver 13 described above,
It projects upwards, and the screw 7 is attached to the upper end of the bolt 7.
b is formed. A washer 16 is fitted to the screw portion 7b, and then a nut 17 is attached. A small spacer 18 is provided on the lower surface of the washer 16.
Then, the spacer 8, the lower spring receiver 9, the small spacer 11, the upper spring receiver 13, and the small spacer 1 described above.
The spacers such as 8 and the spring receiver are made of rubber.
Further, the front leg 2 attached to the upper spring receiver 13 is bent at its end portion downward so that the spring 1
It covers and covers 2 etc.

On the other hand, the mounting structure of the rear leg portion 3 is shown in FIG.
As shown in FIG. 1A, the structure is similar to the mounting structure of the front leg portion 2, but the number of spacers 8 is one, and the thick spacers 21 are provided on the small spacers 11. . Further, in the mounting structure of the front leg portion 2, the washer 16
The small spacer 18 provided on the lower surface of the rear leg 3
It is not provided in the mounting structure of.

[0007]

By the way, when the compressor 1 is operated, the members inside the compressor 1 rotate, and vibrations are generated due to the rotation, and this vibration causes the front leg portion 2 and the rear leg portion of the compressor 1 to rotate. It is transmitted to the part 3. Then, in order to prevent the vibrations from being directly transmitted from the legs 2 and 3 to the unit base 6, the spring 12, which is made of an elastic body such as the spring or rubber, and the spacers 8, 11, 1
8 and 21 and spring receivers 9 and 13 are provided,
The elastic body elastically deforms to absorb vibration.

Certainly, the elastic body can absorb the vibration, but the range of the frequency of the absorbed vibration is narrow. Then, the vibration of various frequencies is generated from the compressor 1. Therefore, the elastic body absorbs vibrations with a narrow frequency range, but vibrations other than that are transmitted to the unit base 6, and the unit base 6 vibrates, which may generate vibration noise.

The present invention is intended to solve the above problems, and an object thereof is to provide a compressor mounting structure in which vibration noise is less likely to occur.

[0010]

To achieve the above object, in the compressor (1) mounting structure of the present invention, a base (6) on which the compressor is mounted is mounted.
, And the leg portions (2, 3) of the compressor, the elastic body (8, 9, 12, 13) and the damping material (52) are interposed.

A regulating member (7, 16, 17) for regulating the movement of the leg portion in the direction opposite to the base is provided, and a damping material (7) is provided between the regulating member and the leg portion. 51) may be arranged.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a compressor mounting structure according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a showcase in which a compressor is arranged. FIG. 2 is a sectional view of FIG. FIG. 3 is a side view of the compressor according to the present invention. FIG. 4 is a sectional view of a mounting structure on the front side of the compressor, (a) is a sectional view of a conventional mounting structure,
(B) is sectional drawing of the attachment structure in this invention.
5A and 5B are sectional views of a mounting structure on the rear side of the compressor, FIG. 5A is a sectional view of a conventional mounting structure, and FIG. 5B is a sectional view of the mounting structure in the present invention. FIG. 6 is an explanatory diagram for explaining the operation of the attachment structure on the front side when the compressor is activated.

In the description of this embodiment, constituent elements corresponding to those of the conventional example described in FIGS. 4 (a), 5 (a) and 7 are given the same reference numerals. , Its detailed description is omitted.

First, a refrigerating showcase 26 as a cooling storage to which the compressor 1 is attached will be described with reference to FIGS. 1 and 2.

Inside the heat insulation box body 28 of the refrigerated showcase 26, an inner box 29 made of stainless steel or the like is arranged with a space, and a space between the heat insulation box body 28 and the inner box 29 is formed. It is an air flow path 31. The air passage 31 is provided with a cooler 32 and a cooler fan 33. A storage chamber 36 is formed inside the inner box 29, and an opening 38 for storing and taking out refrigerated items is formed in the front surface of the storage chamber 36.

Below the heat-insulating box body 28, the machine room 4 is provided.
1 is provided. The unit base 6 is provided inside the machine chamber 41, and the compressor 1, the condenser 44, and the condenser fan 45 are mounted on the unit base 6. The compressor 1 and the condenser 44 constitute a refrigeration cycle together with the above-described cooler 32. When the refrigeration cycle operates, the compressor 1 and the condenser fan 45 rotate and the cooler 32 cools down. Become. Then, when the cooler fan 33 rotates, the air in the air flow passage 31 cooled by the cooler 32 is discharged into the storage chamber 36 from the discharge port 31 a in the upper part of the air flow passage 31, while the inside of the storage chamber 36 is discharged. Air is sucked into the air flow passage 31 through the suction port 31b at the bottom of the air flow passage 31. In this way, the air in the storage chamber 36 is forcedly circulated to cool the storage chamber 36.

3 to 5, the front leg portion 2 and the rear leg portion 3 of the compressor 1 of this embodiment are
Like the conventional compressor 1, it is attached to the unit base 6. Then, in FIG. 4, the mounting structure on the front side of this embodiment shown in FIG.
Unlike the conventional mounting structure shown in FIG. 1, an upper damping material 51 is provided between the upper spring receiver 13 and the washer 16, and a lower damping material 52 is provided between the spacer 8 and the unit base 6. Has been. The upper damping material 51 is thicker than the lower damping material 52. And (a)
Small spacer 1 provided in the conventional example shown in FIG.
8 is not provided in this embodiment shown in FIG.

Further, in FIG. 5, the mounting structure on the rear side of this embodiment shown in FIG. 5B is different from the conventional mounting structure shown in FIG.
An upper damping material 51 is provided between the washer 16 and the washer 16, and a lower damping material 52 is provided between the spacer 8 and the unit base 6. And like the mounting structure on the front side,
The upper damping material 51 is thicker than the lower damping material 52.

The damping materials 51 and 52 are made of a gel-like material such as silicon, do not elastically deform, and have a smaller restoring force, that is, a repulsive force than the elastic body, and the applied force. And has a high vibration damping function. As described above, the damping materials 51 and 52 themselves have a function of absorbing vibrations of a wide range of frequencies from a small frequency to a large frequency.

In the embodiment configured as described above,
When the compressor 1 operates, vibration with a large amplitude is generated at startup, and vibration with a small amplitude and a large frequency is generated during operation. And at startup,
The compressor 1 not only moves up and down but also vibrates while tilting slightly to the left and right and back and forth. Therefore, as shown in FIG. 6, the legs 2 and 3 vibrate greatly while inclining. Further, since the upward displacement of the leg portions 2 and 3 is regulated by the bolt 7, the nut 17 and the washer 16 which are regulating members, the leg portions 2 and 3 are arranged between the washer 16 and the leg portions 2 and 3. The upper damping material 51 repeats compression and expansion while being distorted and deformed. For this reason, the upper spring support 13 from the legs 2, 3
The vibration transmitted to the upper damping material 51 via the is absorbed by the upper damping material 51 and is less likely to be transmitted to the unit base 6 via the washer 16 and the like. Further, vibration is also applied to the lower damping material 52, and this vibration is also applied to the lower damping material 5
2 is absorbed and is less transmitted to the unit base 6. Therefore, the unit base 6 is less likely to vibrate, and noise such as vibration noise is less likely to occur.

During operation, since the amplitude of the legs 2 and 3 becomes small, the legs 2 and 3 reciprocate substantially parallel to each other in the vertical direction, and the vibration damping member 51 on the upper side does not deform so much and vibrates. Absorb. On the other hand, although the vibration is transmitted to the lower damping material 52, since the lower damping material 52 absorbs the vibration as at the time of startup, the vibration is less likely to be transmitted to the unit base 6.

The upper and lower damping members 51 and the elastic body, especially the spring 12, are deformed by the vertical movement of the legs 2 and 3, but the lower damping member 52 has a small thickness. Not so big. Therefore, the amount of vertical movement of the legs 2, 3 or the amplitude thereof is absorbed by the deformation of the elastic body, particularly the spring 12. Since the elastic body such as the spring 12 has a large restoring force, the legs 2 and 3 are quickly returned to their original positions. As a result, when the legs 2 and 3 move downward, they cannot return to their original positions, and do not gradually move downward.

As described above, in the embodiment, since the upper damping material 51 is formed to have a large thickness, it is possible to cope with vibration of large amplitude when the compressor 1 is started.

Further, an elastic body and a lower damping material 52 are interposed between the leg portions 2 and 3 and the unit base 6, and the elastic body is arranged so that the leg portions 2 and 3 are more elastic than the damping material 52. It is located on the side close to. Therefore, the vibration from the legs 2 and 3 is transmitted to the elastic body, but is blocked by the damping material 52, and is hardly transmitted to the unit base 6. Further, even if a large shocking force is applied from the legs 2 and 3, the elastic body is deformed and is relieved.
Can be prevented from being damaged.

The embodiment of the present invention has been described above in detail.
The present invention is not limited to the above embodiment,
Within the gist of the present invention described in the claims,
Various changes can be made. Modification examples of the present invention are exemplified below. (1) In the embodiment, the restricting member including the bolt 7, the washer 16 and the nut 17 restricts the leg portions 2 and 3 from displacing upward, that is, away from the unit base 6. It is also possible to employ a regulating member having the above structure.

(2) In the embodiment, the legs 2, 3
Although the damping material 51 on the upper side is interposed between the damping member 51 and the regulating member, other members such as an elastic body may be interposed in addition to the damping material 51. (3) In the embodiment, the thickness of the damping material 51 on the upper side is configured to be thicker than the thickness of the damping material 52 on the lower side. Damping material 52
It is also possible to make thick. However, when the thickness of the damping material 51 on the upper side is made thicker, the large vibration of the leg portions 2 and 3 can be better coped with.

[0027]

According to the present invention, between the base to which the compressor is attached and the leg of the compressor,
The elastic body and the damping material are interposed. The damping material has a function of absorbing vibrations of a wide range of frequencies as a characteristic of the material itself. Therefore, the vibration from the compressor is absorbed by the vibration damping material, so that the vibration of the base due to the vibration from the compressor is reduced, and the vibration of the base is reduced. Also,
The leg portion of the compressor can be displaced by deforming the elastic body, and can return to the original position by the restoring force of the elastic body.

Further, since the regulating member for regulating the movement of the leg portion in the direction opposite to the base is provided, it is possible to prevent the leg portion from being separated from the base by this regulating member. . Moreover, since the damping material is arranged between the regulation member and the leg portion, it is possible to prevent the vibration from the leg portion from being transmitted to the regulation member. Therefore, the vibration is transmitted to the other member via the restriction member, and the occurrence of noise and the like from the other member is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a showcase in which a compressor is arranged.

FIG. 2 is a sectional view of FIG.

FIG. 3 is a side view of the compressor according to the present invention.

FIG. 4 is a sectional view of a mounting structure on the front side of a compressor, (a) is a sectional view of a conventional mounting structure,
(B) is sectional drawing of the attachment structure in this invention.

FIG. 5 is a sectional view of a mounting structure on the rear side of the compressor, (a) is a sectional view of a conventional mounting structure,
(B) is sectional drawing of the attachment structure in this invention.

FIG. 6 is an explanatory diagram for explaining the operation of the attachment structure on the front side at the time of starting the compressor.

FIG. 7 is a side view of a conventional compressor.

[Explanation of symbols]

 1 Compressor 2 Front leg part 3 Rear leg part 6 Unit base (base) 7 Bolt (regulating member) 8 Spacer (elastic body) 9 Lower spring receiver (elastic body) 12 Spring (elastic body) 13 Upper spring receiver (elasticity) Body 16 Washer (Regulating member) 17 Nut (Regulating member) 51 Damping material 52 Damping material

Claims (2)

[Claims] 1. A structure for mounting a compressor, characterized in that an elastic body and a damping material are interposed between a base to which the compressor is mounted and a leg portion of the compressor. 2. An elastic body and a damping material are interposed between a base to which the compressor is attached and a leg of the compressor, and the leg moves in a direction opposite to the base. A compressor mounting structure characterized in that a regulating member for regulating the above is provided, and a damping material is arranged between the regulating member and the leg portion.