KR20020044428A - Antinoise device of compressor - Google Patents

Abstract

PURPOSE: A compressor assembly is provided to efficiently reduce vibration and noise generated on driving of a compressor and to efficiently cool down the compressor. CONSTITUTION: A noise control device(40) includes a casing(41); a sound absorbing material(43); and a plurality of vents(41a). The casing has an open lower side to store a rotary compressor(20). The sound absorbing material is placed on an inner circumference of the casing. The vents are placed on lower parts of the casing at regular intervals. An outward flange is formed on a lower end of the casing to be installed to a base plate(A) on which the rotary compressor is installed. Driving noise of the rotary compressor is primarily reduced by air layer in the casing and secondarily reduced by the sound absorbing material.

Description

Compressor assembly {Antinoise device of compressor}

The present invention relates to a compressor mounted on an air conditioner and the like, and more particularly, to a compressor assembly having a sound insulation device for reducing noise generated when driving a compressor.

In general, a compressor is a device that compresses a refrigerant at high temperature and high pressure in a refrigeration cycle such as an air conditioner in which a compression, condensation, expansion, and evaporation process is performed continuously using a refrigerant as a medium.

As shown in FIG. 1, a conventional rotary compressor assembly having such a function includes a rotary compressor 10 having a driving motor (not shown) and a compression device (not shown) embedded in the sealed container 1, and vaporized refrigerant. And an accumulator 4 for guiding to the rotary compressor 10 side.

The outer side of the sealed container 1 is wrapped with a soundproof member 5 to reduce vibration and noise, and the power input terminal 1c directly connected to a driving motor (not shown) on the upper surface of the sealed container 1. And a refrigerant discharge pipe 1b through which the compressed refrigerant is discharged.

And the accumulator (4) consisting of a cylindrical casing communicates with the sealed container (1) through the refrigerant guide pipe (1a), is installed standing up on the outside of the sealed container (1) through the holder (4a).

In addition, in order to stably install the rotary compressor 10 with the accumulator 4, the pedestal 2 is fixed to the lower portion of the sealed container 1 through welding means. That is, the sealed container 1 is welded upright at the center of the pedestal 2, and the coupling portion (not shown) to which the anti-vibration rubber 3 is fitted is formed at the corners of the pedestal 2. And the anti-vibration rubber (3) is a through hole (not shown) is formed so as to penetrate the center in the room. Therefore, when the anti-vibration rubber (3) is inserted into each coupling hole of the pedestal (2) and then bolted to the outdoor base plate (A) such as an air conditioner, the rotary compressor (10) is spaced apart from the base plate (A). Is fixed.

When the external power is input to the rotary compressor 10 mounted as described above through the power input terminal 1c, the driving motor is operated to generate power. In the compression apparatus, the compressed refrigerant is supplied into the refrigerating cycle through the refrigerant discharge pipe 1b by receiving and compressing the refrigerant to discharge the refrigerant.

However, in the conventional rotary compressor assembly, considerable noise and vibration are generated when driving the driving motor and the compression device built in the airtight container 1, which is transmitted to the base plate A to significantly reduce the durability of other electric appliances. There is this.

In order to solve this problem, the conventional rotary compressor 10 is provided with a soundproof member 5 made of a porous material to surround the hermetic container 1, but since it is configured to closely wrap the side of the hermetic container 1, There is a limit to reducing noise and vibration.

That is, when the compressor is small, the generated noise is reduced to some extent through the soundproof member 5, but in the case of the large size, the noise source itself is considerable, so that the conventional soundproof member 5 structure covering only the outer side of the sealed container 1 has a structure. Sound insulation effect can not be expected.

In other words, the noise generated when the rotary compressor is driven is generated by the drive motor located in the upper space of the sealed container 1, and the upper part of the sealed container 1 is exposed to the atmosphere, so that the sound insulation effect of the soundproof member 5 is achieved. Will fall. In addition, a considerable amount of heat generated when the rotary compressor 10 is driven by the soundproof member 5 may not be easily discharged, which may adversely affect the reliability and durability of the electrical appliance to which the rotary compressor 10 is applied.

The present invention is to solve such a problem, an object of the present invention is to improve the soundproofing device to effectively reduce the vibration and noise generated when driving the compressor and at the same time the compressor assembly which can cool the compressor more efficiently To provide.

1 schematically shows a soundproof structure of a conventional compressor.

2 is an exploded perspective view showing a compressor according to the present invention.

3 is a cross-sectional view taken along the line III-III of FIG. 2, showing the assembled state of the soundproofing device according to the present invention.

* Explanation of symbols for the main parts of the drawings *

20. Regenerator 30. Accumulator

40. Soundproofing 41. Casing

41 .. Ventilation 42. Outward flange

43. Sound absorption material

The present invention for achieving this object is;

A compressor assembly having a compressor mounted on a base plate and a soundproof device for reducing noise generated by the compressor,

The soundproofing device is characterized in that it comprises a casing whose lower side is opened so that the compressor is accommodated, a sound absorbing material disposed on the inner circumference of the casing, and a ventilation hole provided in a part of the casing.

In addition, a plurality of ventilation holes are provided, characterized in that the lower portion of the casing is provided with a predetermined interval spaced apart.

In addition, the lower end of the casing is a configuration characterized in that the outward flange for mounting on the base plate on which the compressor is mounted.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the rotary compressor assembly according to the present invention includes a rotary compressor 20 having an accumulator 30, a support 23 supporting the rotary compressor 20, and a soundproofing device 40. .

The rotary compressor 20 has a cylindrical shape and includes a sealed container 21 having a refrigerant guide tube 24 and a refrigerant discharge tube 25 for guiding refrigerant suction and discharge, and the accumulator 30 includes a sealed container ( 21) It is attached to the side. The upper portion of the hermetic container 21 is provided with a refrigerant discharge pipe 25 extending upwardly and a terminal 26 for receiving an external power source. The hermetic container 21 receives power from an external power source. Drive motor (not shown) to generate and a compression device (not shown) to operate by receiving its power is built.

The accumulator 30 is erected outside the airtight container 21 and is firmly installed. Therefore, the refrigerant not vaporized in the evaporator (not shown) of the refrigerating cycle is completely vaporized into the accumulator 30, and continues to flow into the sealed container 21 of the rotary compressor 20 through the refrigerant guide tube 24. Will enter. To this end, the lower end of the accumulator 30 is in communication with the bottom of the sealed container 21 through the refrigerant guide tube 24, the upper end thereof is connected to the evaporator side of the refrigeration cycle is connected to the suction pipe 31 for the refrigerant.

The pedestal 23 is for holding and fixing the base plate A, such as an air conditioner, on the bottom surface of the rotary compressor 20. To this end, the lower portion of the sealed container 21 of the rotary compressor 20 is fixed to the center of the base 23 by welding means, and the base plate A and the bolt are fastened after the dustproof rubber 22 is inserted at the edge portion.

Meanwhile, referring to FIGS. 2 and 3, the soundproof device 40 is for reducing noise generated when the rotary compressor 20 is driven. This is a casing 41 in which the rotary compressor 20 is completely accommodated. And a sound absorbing material 43 attached to the inner circumference of the casing to absorb noise.

The casing 41 is formed in a cylindrical shape with a lower portion open to accommodate the rotary compressor 20 on which the accumulator 30 is mounted. The lower end of the casing 41 has a fastening member 44 on the base plate A in the present embodiment. A radially extending outward flange 42 is provided for mounting via bolts). Reference numeral 42a is a fastening hole formed in the outward flange 42. Therefore, when the casing 41 is disposed to cover the rotary compressor 20 and the outward flange 42 is fixed to the base plate A, the soundproof space 45 is provided between the rotary compressor 20 and the casing 41. , See FIG. 3).

On the other hand, a plurality of ventilation holes 41a are perforated in some zones of the casing 41, in order to distribute the air in the casing 41 to the outside. The ventilation opening 41a is formed at a lower end of the casing 41 to be spaced apart in a circumferential direction by a predetermined distance, which is smoothly made in the airflow of the soundproof space 45, but in the upper part of the sealed container 21 of the rotary compressor 20. Most of the noise generated is to prevent leakage.

In addition, the casing 41 is manufactured by injection molding with a rubber or PVC, etc., when installed to surround the rotary compressor 20, the upper and wider than the overall height of the rotary compressor 20 so that the sealed container 21 is accommodated in a relaxed manner. It is preferable to shape | mold to have an internal diameter and to comprise the outward flange 42 integrally.

The sound absorbing material 43 is made of a porous material such as felt or sponge, and is attached to the inner circumference of the casing 41 through an attachment means. The sound absorbing material 43 also has an outer shape of the same cylindrical shape as the casing 41, and an opening 43a is formed at a portion corresponding to the sound absorbing material 43 so as not to block the ventilation holes 41a provided in the casing 41. .

Next, the operation and effects of the soundproofing device configured as described above will be described.

First, when power is applied to the rotary compressor 20 through the power input terminal 26, the drive motor in the hermetic container 21 is driven to generate power and the compression device operates by receiving power. Therefore, the refrigerant having evaporated on the evaporator side of the refrigerating cycle is introduced into the sealed container 21 through the refrigerant guide tube 24 through the accumulator 30, and is subsequently compressed to a high temperature and high pressure to cool the refrigerant discharge pipe 25. Through the refrigeration cycle again.

At this time, the accumulator 30 prevents the refrigerant in the unsaturated state from directly flowing into the sealed container 21. That is, the refrigerant having evaporated in the evaporator is guided to the accumulator 30 through the suction pipe 31, and the liquid refrigerant which has not been vaporized is vaporized and exits to the sealed container 21 side through the refrigerant guide tube 24. .

Although the vibration and noise and heat generated by the operation of the compression device together with the drive motor at the start of the rotary compressor 20, these are blocked from being transmitted to the outside by the soundproof device 40 according to the present invention.

That is, since the casing 41 of the soundproofing device 40 is provided so as to surround the rotary compressor 20 with a margin, a soundproof space 45, that is, an air layer, is formed therebetween. Therefore, the transmission of sound waves is best performed in solid and relatively slow in gas, and the sound generated by the rotary compressor 20 through the air layer in the casing 41 is primarily reduced by the sound absorbing material 43. By secondary reduction, the sound insulation effect of the soundproofing device 40 is improved significantly. In addition, since the casing 41 and the rotary compressor 20 do not contact each other, vibration generated when the rotary compressor 20 is started is not directly transmitted to the soundproofing device 40.

In addition, since the rotary compressor 20 is a device that compresses the gaseous refrigerant by the driving of the drive motor and the compression device and discharges the gaseous refrigerant in a high-temperature, high-pressure gas state, a considerable amount of heat is generated during its startup, and part of the rotary compressor 20 ) Is discharged into the casing 41 of the soundproofing device 40 surrounding it. However, the outer air is continuously circulated through the ventilation port 41a in the casing 41, so that the heat released into the casing 41 also escapes.

At this time, since the ventilation port 41a is formed at the lower part of the casing 41 as described above, the noise generated intensively in the upper portion of the rotary compressor 20 does not leak, while the air circulation in the casing 41 is It is easily achieved by natural convection.

In fact, the inventor of the present invention installed the soundproofing device 40 having the plurality of ventilation holes 41a formed in the casing 41, and then operated the rotary compressor 20. As a result, it was found that the temperature in the casing 41 dropped significantly. Although the effect of this invention is demonstrated once again with reference to [ Table 1 ] .

[Table 1]. Temperature measurement results when there is no vent at the bottom of the casing of the soundproofing device.

division Ventilation free Ventilation hole Rotary compressor upper temperature 96.7 ℃ 84.9 ℃ Rotary compressor lower temperature 74.1 ℃ 57.3 ℃ Refrigerant discharge side temperature 94.7 ℃ 90.0 ℃

As shown in the Table 1, it can be seen that the present invention is that in the casing (41) rotating the compressor 20 the temperature of the top and bottom, and the refrigerant discharge side significantly lower applied.

This is because the air in the casing 41, the temperature of which rises due to the start of the rotary compressor 20, is released to the outside through the ventilation port 41a, and thus the rotary compressor 20 can be started for a long time without difficulty in reliability and durability. .

As described in detail above, according to the compressor assembly according to the present invention, there is provided a soundproofing device having a casing with a lower side open to accommodate the compressor, a sound absorbing material disposed in the inner circumference of the casing, and a ventilation hole provided in a part of the casing. have. Accordingly, the compressor starting noise is first reduced by the air layer present in the casing, and then secondarily reduced by the sound absorbing material, so that the sound insulation effect is significantly improved as compared with the conventional art. In addition, the air in the casing is continuously circulated through the ventilation openings, so that the compressor is easily cooled, which has an effect of improving product reliability and durability.

Claims (3)

A compressor assembly having a compressor mounted on a base plate and a soundproof device for reducing noise generated by the compressor, The sound insulation device, And a casing having a lower side open to accommodate the compressor, a sound absorbing material disposed on an inner circumference of the casing, and a ventilation hole provided in a portion of the casing. The method of claim 1, The plurality of ventilation holes are provided, compressor assembly, characterized in that provided in the lower portion of the casing spaced apart a predetermined interval. The method according to claim 1 or 2, Compressor assembly characterized in that the lower end of the casing is provided with an outward flange for mounting on the base plate on which the compressor is mounted.