JP2020122437A - Compressor, and device and refrigerator having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise particularly generated during low-speed afterload operation. SOLUTION: The vibration-proof material is provided with a closed container containing a vibration source inside and having an annular attached portion 11, an elastic anti-vibration material 3 attached to the attached portion 11, and a fastener 4. Reference numeral 3 has a narrow gap 31 having a diameter equal to or slightly smaller than the outer diameter of the fastener 4, the narrow gap 31 having a diameter slightly smaller than the outer diameter R1 of the fastener 4, and the fastener 4 is inserted into the narrow gap 31. Then, the portion of the anti-vibration material 3 that surrounds the narrow gap 31 is elastically deformed to the outer diameter side. [Selection diagram] FIG. 4

Description

The present invention relates to a compressor, a device including the compressor, and a refrigerator.

In recent years, it has been proposed that a refrigerator mainly includes an evaporator that generates cold air in the freezing temperature range and an evaporator that generates cold air in the refrigeration temperature range. As a result, in the evaporator that produces cold air in the refrigeration temperature range, a relatively high temperature (that is, high density) refrigerant flows through the cycle and is sucked into the compressor. Therefore, the load when compressed by the piston is large, and it easily becomes a vibration source. Similarly, in recent years, the speed of the compressor has been reduced. That is, the inertia in the movement of the piston is decreasing, and the load fluctuation is large during the compression process of the refrigerant having a high load and the suction process of the refrigerant having a low load, which increases the speed pulsation of the piston. As a result of the combination of these, a vibration source (noise source) that has not been assumed in the past appears (is conspicuous).

Now, regarding the technique of fixing the compressor to the floor surface or the like, in Patent Document 1, a collar member 70 that is harder than the mount rubber 63 is arranged so as to surround the bolt 65, and is slightly larger than the diameter of the screw portion 65A of the bolt 65. A configuration in which the threaded portion 65A of the bolt 65 is loosely fitted is disclosed (0008,0016, FIG. 3).

JP, 2012-177315, A

According to the present inventors, it has been found that noise is generated from a region corresponding to the mount rubber 63 of Patent Document 1 as the load on the piston and the inertia thereof are reduced in recent years. As a result of examination, it was found that noise is generated when the collar member 70 and the bolt 65 are loosely fitted as in Patent Document 1. In Patent Document 1, since the leg pieces 62 vibrate when the compressor operates, the mount rubber 63 is provided so that this vibration is not transmitted to the reinforcing plate 72 and the like, but either the collar member 70 or the bolt 65 is provided. When they vibrate, they come into contact with each other and generate noise.

The present invention made in view of the above circumstances,
A closed container including a vibration source inside and an annular attached portion,
An elastic vibration-proof material attached to the attached portion;
And a fastener,
The said vibration isolator is a compressor which has a narrow space|gap whose diameter is equal to or slightly smaller than the outer diameter of the said fastener.

The top view at the time of attaching the compressor of Example 1 to a bottom plate. Vertical cross-sectional view of the compressor of the first embodiment Exploded perspective view of the vibration isolator and fastener of Example 1. Example 1 Enlarged cross-sectional view around the vibration isolator of Example 1 Hereinafter, examples of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a top view of the compressor of this embodiment mounted on a bottom plate, FIG. 2 is a vertical cross-sectional view of the compressor of this embodiment, and FIG. 3 is an exploded view of the vibration isolator 3 and fastener 4 of this embodiment FIG. 4 is a perspective view, and FIG. 4 is an enlarged cross-sectional view around the vibration isolator 3 of this embodiment.
The compressor is installed on, for example, a bottom plate 2 of a machine room of a refrigerator, and a hermetically sealed container 1 and a mounted part 11 each having a perforated and planar mounted part 11 extending in the vicinity of the bottom plate 2 and substantially parallel to the bottom plate 2. The antivibration material 3 provided in the above, and the fastener 4 that suppresses detachment of the antivibration material 3 from the attached portion 11. The closed container 1 has a motor as a vibration source, a piston 5 as a vibration source that reciprocates according to the driving of the motor, and a cylinder 6 on which the piston 5 slides. In the present embodiment, four vibration isolator 3 and fasteners 4 are arranged. The fastener 4 is not shown in FIG.

The vibration isolator 3 is a member that is formed of an elastic member such as rubber and supports the weight of the compressor. The vibration-damping material 3 includes a narrow void 31 arranged on the side of the closed container 1 and having an inner diameter R1′ equal to or slightly smaller than the outer diameter R1 of the fastener 4, and the fastener 4 arranged on the bottom plate 2 side. Is a hollow cylindrical member that surrounds a wide void 32 having an inner diameter R2 that is larger than the outer diameter of “Slightly small” means that when the fastener 4 is inserted into the narrow gap 31, the portion of the vibration isolator 3 surrounding the narrow gap 31 is pushed by the fastener 4 and elastically deformed, but the fastener 4 does not break. It can be said that the insertion is possible.

Between the portion surrounding the narrow void 31 and the portion surrounding the wide void 32, the portion extending over the length (R2-R1) and surrounding the narrow void 31 and the portion surrounding the wide void 32 are connected. The connection portion 33 is arranged. The vibration-proof material 3 is integrally formed with a portion surrounding the narrow void 31, a portion surrounding the wide void 32, and a connecting portion 33.
A convex portion 311 protruding in the outer diameter direction is provided in a portion of the portion surrounding the narrow void 31 away from the portion surrounding the wide void 32.

First, the compressor is installed with the vibration-damping material 3 sandwiched between it and the bottom plate 2 by mounting the mounted portion 11 on a portion surrounding the wide gap 32 of the vibration-damping material 3. Then, a portion surrounding the narrow gap 31 is arranged in the hole of the mounted portion 11, the convex portion 311 is located on the upper side of the hole of the mounted portion 11, and the connecting portion 33 is located on the lower side of the hole, It is possible to suppress the mounted portion 11 from being vertically displaced. As a result, it is possible to prevent the attached portion 11 from being detached from the vibration isolator 3 due to vibration (the closed container 1, that is, the attached portion 11 vibrates) accompanying the operation of the compressor or the vibration during transportation. The hole of the attached portion 11 has a diameter substantially equal to the outer diameter dimension R3 of the narrow space 31.

In this embodiment, the fastener 4 is inserted into the void in the vibration isolator 3 to further suppress the detachment of both members. When the fastener 4 is inserted into the narrow space 31, the portion surrounding the narrow space 31 preferably bulges toward the outer diameter side by the fastener 4 and elastically deforms, and is supported between the attached portion 11 and the fastener 4. As a result, the adhesion between the fastener 4 and the narrow gap 31 is improved, the attachment is made firm, and the gap between the vibration isolator 3 and the fastener 4 can be suppressed. That is, when the vibration of the attached portion 11 vibrates the vibration isolator 3, if there is a gap between the vibration isolator 3 and the fastener 4, both will come into contact with each other and noise will be generated. According to this embodiment, this can be suppressed.

A portion of the vibration isolator 3 surrounding the wide void 32 is a void having a larger diameter than the fastener 4, preferably 1.1 times or more, 1.5 times or more, or 2.0 times or more the diameter of the fastener 4. Is. This can reduce the risk of contact with the fastener 4. That is, noise is likely to be generated by fixing the vibration isolator 3 and the fastener 4 by the portion surrounding the narrow space 31 near the attached portion 11 and making it difficult to make contact in other areas. Has been reduced.

The fastener 4 can be formed of, for example, metal, and can be a bolt or the like inserted through the holes of the bottom plate 2 and the vibration isolator 3. After the insertion, by arranging the flange 41 so that the vibration isolator 3 is located between the bottom plate 2 and the flange 41, it is possible to reduce the risk of the vibration isolator 3 being detached from the fastener 4. ..

The compressor of this embodiment can be provided in various refrigerating machines such as refrigerators.

1 Compressor 2 Bottom Plate 3 Vibration Isolator 4 Fastener 5 Piston (Vibration Source)
6 cylinders

Claims (6)

A closed container including a vibration source inside and an annular attached portion,
An elastic vibration-proof material attached to the attached portion;
And a fastener,
The said vibration isolator is a compressor which has a narrow space|gap whose diameter is equal to or slightly smaller than the outer diameter of the said fastener. The narrow gap is a diameter slightly smaller than the outer diameter of the fastener,
The compressor according to claim 1, wherein when the fastener is inserted into the narrow space, a portion of the vibration isolator surrounding the narrow space elastically deforms toward an outer diameter side. The compressor according to claim 2, wherein a portion surrounding the narrow space is sandwiched between the fastener and the attached portion. The compressor according to any one of claims 1 to 3, wherein the vibration isolator has a wide void having a diameter larger than that of the narrow void and 1.1 times or more a diameter of the fastener. A device comprising the compressor according to claim 1. A refrigerator in which the compressor according to any one of claims 1 to 4 is installed on a bottom plate of a machine room,
The fastener is inserted through the bottom plate and the vibration isolator,
The vibration damping material is
Provided at a position sandwiched between the bottom plate and the flange arranged on the fastener,
A refrigerator having a shape in which the attached portion is sandwiched on both sides in the extending direction of the fastener.

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