KR20050007298A - Compressor having noise reducing apparatus - Google Patents

Abstract

PURPOSE: A compressor with a noise reducing apparatus is provided to reduce noise efficiently by charging oil between the double walls of the casing with simple structure and insulating high frequency noise from the lower cap. CONSTITUTION: A Z-compressor with a noise reducing apparatus is composed of an electric motor unit(60) having a stator(62) and a rotor(63) and generating rotational force in the upper part of a casing(50), a compressor unit(70) placed in the lower part of the casing to suck, compress and discharge fluid according to rotational force from the electric motor unit. The compressor unit comprises a cylinder assembly(71) composed of a cylinder(72) and first and second bearing plates(73,74) and fixed in the casing with the suction passage and the discharge passage, a Z-plate(75) dividing the cylinder assembly into plural compression spaces and compressing and discharging liquid by rotating, and vanes(78,79) contacted to both sides of the Z-plate and reciprocated to divide the compression space into the suction region and the compression region.

Description

Compressor with noise reduction device {COMPRESSOR HAVING NOISE REDUCING APPARATUS}

Generally, a compressor is a device for converting mechanical energy into a compressive energy of a compressive fluid, and among them, a refrigeration compressor is classified into a reciprocating compressor, a scroll compressor, a centrifugal compressor, a rotary compressor, and the like according to a compression method.

Such compressors generate vibration and noise during operation. The noise of the high frequency component of the noise component is mainly generated by the pressure pulsation sound and the friction sound between the mechanical parts, and the generated noise penetrates the compressor and radiates to the outside. It acts as a major factor to increase the noise of air conditioners outdoor units and refrigerators.

Accordingly, the phenomenon and the problem of noise radiating to the outside when the compressor is driven around the G-compressor (hereinafter, referred to as 'Z-compressor') of the new concept developed by the present applicant among the compressors will be described.

1 is developed by the present applicant and filed with the Republic of Korea Patent Office (Patent Application No. 10-1999-0042381, filing date 1999, October, 01), the 2001 Patent Publication (Patent 2001-0035687) issued by the Republic of Korea Patent Office Longitudinal cross-sectional view of a Z-compressor, published on 7 May.

First, the Z-compressor illustrated in FIG. 1 will be described.

Z-compressor is a compressor that can be classified as a rotary compressor, the configuration is largely provided in the interior of the hermetic casing (10) for generating a rotating force and the rotational force generated in the electric mechanism 20 It consists of the compression mechanism part 30 which inhales, compresses, and discharges a fluid.

The electric drive unit 20 is composed of a stator 22 and a rotor 23 like a normal electric motor.

The compression mechanism 30 is fixed to the lower side of the casing 10, the cylinder assembly 31 to form a compression space in which the fluid sucked from the outside of the fluid is compressed, the rotor 23 of the power mechanism unit 20 Rotating shaft 25 for transmitting the rotational power generated in the) and the rotating shaft 25 is coupled to the rotary shaft 25 at the same time the compression space of the cylinder assembly 31 to the first space (V1) and the second space (V2) When the Z-plate 35 is partitioned and the Z-plate 35 is rotated in contact with the upper and lower surfaces of the Z-plate 35 while being provided with elastic force by the springs 36 and 37. And a first vane 38, a second vane 39, and the like which divide each space V1 and V2 into a suction zone and a compression zone, respectively.

Here, the cylinder assembly 31 is a cylindrical cylinder 32, and a first bearing plate fixed to the upper and lower surfaces of the cylinder 32 to form a compression space (V1, V2) with the cylinder (32) 33 and the second bearing plate 34.

In particular, the Z-plate 35, which is a main part of the present invention, is formed in a disk shape in planar projection such that the outer circumferential surface is in sliding contact with the inner circumferential surface of the cylinder 32, and the sine wave curve has the same thickness from the inner circumferential surface to the outer circumferential surface when deployed. And a surface forming the top dead center R1 is rotated in contact with the bottom surface of the first bearing plate 33, and a surface forming the bottom dead center R2 is formed on the surface of the second bearing plate 34. It is configured to rotate in a state in close contact with the upper surface.

On the other hand, reference numeral 14 denotes a suction passage through which fluid is sucked into the casing 10 and the cylinder 32, and reference numeral 15 denotes a discharge tube through which the fluid is discharged to the outside of the casing 10. Reference numerals 40 and 41 denote discharge mufflers for reducing the discharge noise.

Referring to the operation of the Z-compressor of the present invention configured as described above is as follows.

When the rotating shaft 25 is rotated by the driving force of the power mechanism unit 20, the Z-plate 35 coupled to the rotating shaft 25 in the cylinder assembly 31 simultaneously rotates to suck, compress, The discharging operation is made.

That is, the first space V1 positioned above the Z-plate 35 has a suction area and a compression area at the top dead center R1 of the Z-plate 35 and the first vane 38. The second space (V2) located in the lower portion of the Z-plate 35 is divided into the suction area and the compression between the bottom dead center (R2) and the second vane (39) of the Z-plate 35 It is divided into areas. As the Z-plate 35 rotates in this state, the top dead center R1 and the bottom dead center R2 of the Z-plate 35 are moved to change the volume of the suction and compression regions of each space. .

In this case, the first vane 38 and the second vane 39 are reciprocated in opposite directions to the cam surface height of the Z-plate 35.

Therefore, the fluid is simultaneously sucked into each of the suction zones V1s and V2s of the first space V1 and the second space V2 through the suction passage 14, and then gradually compressed and then compressed in the Z-plate 35. As soon as the top dead center R1 or the bottom dead center R2 reaches the discharge start point, the compressed fluid is simultaneously discharged to the outside of the cylinder assembly 31 through the discharge flow paths (not shown) of the respective spaces V1 and V2. Then, the discharge is discharged to the outside through the discharge pipe 15 through the discharge muffler (40, 41) and the casing (10) inside.

In the Z-compressor of the present invention operating as described above, considerable noise is radiated to the outside of the casing 10 by the pressure pulsation sound generated when the fluid is discharged and the friction sound generated between the mechanism parts, and FIG. 2 shows the Z-compressor. A radiation distribution diagram showing a phenomenon in which noise is radiated to the outside of the casing 10 during driving.

That is, the casing 10 has a structure that the upper cap 12 is coupled to the upper side around the cylindrical body 11 and the lower cap 13 is coupled to the lower side to seal the inside, as shown in FIG. 2. As can be seen, the noise emitted to the outside of the casing 10 during driving of the compressor can be seen to be relatively generated mainly in the lower portion of the casing 10 in which the lower cap 13 is located.

On the other hand, in order to reduce the noise generated in the lower portion of the Z-compressor to increase the thickness (t) of the lower cap 13 shown schematically in FIG. 3 from 3.5 mm to 4.5 mm, as shown in FIG. As a result, transmission loss (TL) increased by about 2 dB.

This shows that the noise reduction effect of the compressor is almost insignificant, and simply increasing the thickness of the casing 10, that is, the lower cap 13, does not effectively reduce the noise emitted to the outside when the compressor is driven.

Therefore, in all compressors using a hermetic casing including the two-compressor described above, a technique capable of maximizing noise reduction by effectively reducing noise radiated to the outside from the lower side of the compressor without degrading the performance of the compressor. Development is required.

The present invention relates to a compressor used in an air conditioner or a refrigerator using a refrigeration cycle, and more particularly, to a compressor having a noise reduction device capable of minimizing noise radiated out of the compressor.

1 is a longitudinal cross-sectional view showing a Z-compressor according to the present invention;

FIG. 2 is a radiation distribution diagram showing the noise level radiated out of the casing in the Z-compressor shown in FIG.

Figure 3 is a schematic cross-sectional view showing the lower cap of the two-compressor according to the prior application,

4 is a graph showing a change in transmission loss according to a change in thickness of the lower cap shown in FIG.

5 is a longitudinal sectional view showing a Z-compressor equipped with a noise reduction device according to a first embodiment of the present invention;

6 is a cross-sectional view showing the lower cap of the Z-compressor shown in FIG.

7 is a plan view of the lower cap shown in FIG.

8 is a radiation distribution diagram showing the noise level radiated out of the casing in the Z-compressor of the present invention and the invention,

9 is a comparative graph showing the transmission loss according to the invention and the invention of the prior application,

10 is a comparative graph showing the transmission loss change according to the thickness change of the lower cap and the partition wall in the prior application and the present invention,

11 is a comparative graph showing a change in transmission loss according to a change in the distance between the lower cap and the partition wall in the prior application and the present invention,

12 is a modified embodiment of a lower cap having a double wall according to the first embodiment of the present invention;

13 is a cross-sectional view showing a lower cap having a double wall according to a second embodiment of the present invention;

14 is a cross-sectional view showing a lower cap having a double wall according to a third embodiment of the present invention;

15 is a cross-sectional view showing a lower cap having a double wall according to a fourth embodiment of the present invention;

16 is a longitudinal sectional view showing a Z-compressor according to the fifth embodiment of the present invention.

Best Mode for Carrying Out the Invention

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

For reference, in describing the preferred embodiment of the present invention, the Z-compressor will be described so as to be compared with the G-compressor (hereinafter referred to as 'Z-compressor') described in the background art, but the present invention is practiced. The scope is not limited to the Z-compressor, but can be variously applied to various compressors within the scope of the technical idea described in the claims.

5 to 7 are views according to the first embodiment of the present invention, FIG. 5 is a longitudinal sectional view showing a Z-compressor, FIG. 6 is a sectional view showing a lower cap, and FIG. 7 is a plan view of a lower cap.

Z-compressor equipped with a noise reduction device according to the first embodiment of the present invention, referring to Figure 5, it is located largely inside the sealed casing 50, the stator 62 and the rotor 63 to generate a rotational force And a compressor mechanism (70) positioned below the inside of the casing (50) and sucking, compressing, and discharging the fluid by the rotational force generated by the power mechanism (60).

Here, the compression mechanism 70 is composed of a cylinder (72) and the first and second bearing plates (73, 74) is fixed in the casing 50, the suction flow path (72a) and the discharge flow path (not shown) And a Z-plate 75 for dividing an inner space into a plurality of compression spaces in the cylinder assembly 71 and simultaneously rotating and then discharging the fluid by the power mechanism unit 60. ) And vanes (78,79) contacting both sides of the Z-plate (75) to partition the respective compression space (V1, V2) into a suction zone and a compression zone while reciprocating. .

The power mechanism 50 and the compression mechanism 70 as described above is made of the same or similar configuration as the power mechanism and the compression mechanism of the background art described above.

However, the casing 50 has a body 51 having a cylindrical structure, an upper cap 52 welded to an upper portion of the body 51, and a lower portion welded to a lower portion of the body 51. The cap 53 and the partition wall 55 provided inside the lower cap 53 to form a double wall structure with the lower cap 53 are configured differently from the casing structure of the above-described prior invention.

That is, in the lower cap 53, a sound insulation space K is provided between the lower cap 53 and the lower cap 53 so as to block noise radiated to the outside through the lower part of the casing 50 when the compressor is driven. The partition wall 55 to be formed is further provided.

6 and 7, the lower cap 53 and the partition wall 55 are configured to have a double wall structure by being coupled to each other by forming a pan structure in which the upper part is open.

Of course, the outer wall of the partition wall 55 is formed to be the same as or smaller than the inner diameter of the lower cap 53 so that the partition wall 55 can be inserted into the lower cap 53. Therefore, the lower cap 53 and the circumferential wall portions of the partition wall 55 are in close contact with each other, and the bottom surface portion is configured to maintain a predetermined interval so that the sound insulation space K is made. In this case, a plurality of protrusions 55a protrude from the partition wall 55 and are supported on the bottom surface of the lower cap 53 so that a constant distance is maintained between the lower cap 53 and the partition wall 55. .

It is preferable that at least three protrusions 55a are formed to ensure a stable support structure.

In addition, a plurality of oil inlet holes 55b are formed in the partition wall 55 so that oil contained in the casing 50 may be introduced into and filled with the sound insulation space K. Therefore, the oil in the casing 50 is naturally filled through the oil inflow hole 55b in the sound insulation space K formed by the lower cap 53 and the partition wall 55.

Meanwhile, in the first embodiment of the present invention, the lower cap 53 of the casing 50 is configured to have a double wall structure, but the lower cap 53 may be included according to a design condition of the compressor. The part of the body 51 or the upper cap 52 can also be configured as a double wall structure.

In addition, in the first embodiment, the lower cap 53 is illustrated to have a double wall structure, but it is possible to design a triple or quadruple structure according to design conditions.

The operation and effect realized through the Z-compressor of the first embodiment according to the present invention as described above will be described with reference to FIGS. 8 to 11.

8 is a radiation distribution diagram showing the noise level radiated out of the casing in the Z-compressor of the present invention and the present invention.

As shown in FIG. 8, the Z-compressor B of the present invention having a double wall structure considerably reduces noise emitted to the outside of the casing 50 as compared to the Z-compressor A of the present invention having a single wall structure. It can be confirmed. Experimental results show that the noise emitted to the outside of the compressor is reduced by about 3 to 4dB, which improves the sound insulation performance.

In particular, in the Z-compressor of the present invention, it can be seen that the noise emitted from the lower cap 53 portion, which is the lower side of the casing 50, from which the noise of the high frequency component is mainly emitted, is significantly reduced.

That is, Figure 9 is a comparative graph showing the transmission loss (TL; Transmission Loss) according to the present invention and the invention, the present invention has a double wall structure of the lower cap compared to the invention of the invention in which the lower cap is a single wall, the actual compressor In the frequency range (D), which is a problem with radiated noise, the sound insulation performance (transmission loss) of about 30 dB is increased, thereby maximizing the noise reduction effect of the compressor.

In particular, in the present invention, the oil contained in the casing 50 is naturally filled for the purpose of lubrication and cooling between the lower cap 53 and the inner wall 55 and the lower cap 53 and the partition wall 55. By reducing the resonance frequency that may occur in the sound insulation space K, the oil in the casing 50 serves as the sound insulation material without additional sound insulation or sound absorbing members. Therefore, it is possible to effectively reduce the radiation noise generated when driving the compressor with a simple structure.

On the other hand, Figure 10 is a comparison graph showing the change in transmission loss according to the thickness change of the lower cap and the partition wall in the present invention, P is a change in the noise frequency when the thickness of the lower cap having a single wall in the prior application is 3.2t primary volume change line and, a, B, C is the thickness of the casing (t ₁₎ the thickness of the contrast bulkhead (t ₂₎ non-time (t ₂ / t ₁₎ of 0.1, respectively, when 0.3 days, one day in the present invention It shows the sound volume change line according to the change of noise frequency.

Experimental results of such a comparison graph, it can be seen that the larger the difference between the thickness of the lower cap and the partition wall, the greater the transmission loss, the higher the sound insulation effect. Therefore, the present invention is configured such that the thickness between the casing and the partition ratio (t ₂ / t ₁₎ of 0.01 to 2.0.

Next, Figure 11 is a comparison graph showing the transmission loss change according to the gap between the lower cap and the partition wall in the prior invention and the present invention, P is the noise when the thickness of the lower cap having a single wall in the prior invention is 3.2t a primary volume change line in accordance with the frequency _{change, B 1, B 2, B} 3 is a distance between the casing and the partition wall in the present invention, the casing and the partition wall thickness ratio of (t ₂ / t ₁₎ of 0.3 conditions in (d) Is 0, 2 mm, and the sound volume change line according to the noise frequency change when 3 mm is shown.

As a result of the experiment of the comparison graph, it can be seen that the sound insulation effect increases as the distance d between the casing and the partition wall increases. Therefore, in the present invention, the ratio of the thickness of the casing (t ₁ ) to the ratio (d / t ₁ ) of the gap d between the casing and the partition wall is configured to be 0.0 to 3.0.

FIG. 12 is a modified embodiment of a lower cap having a double wall according to the first embodiment of the present invention, in which the lower cap 53 'and the partition wall 55' are lower than the lower cap of the embodiment shown in FIG. 51 ') has a structure in which the heights of the side walls 53a and 55a are increased by' E '. Here, it is preferable that E is set to about 17.5 mm.

Accordingly, the lower cap 53 'is able to block noise emitted through the lower portion of the body 51' by increasing the engagement area with the body 51 'by the height of' E '.

13 is a cross-sectional view showing a lower cap having a double wall according to a second embodiment of the present invention.

In the above-described first embodiment, protrusions are formed on the partition wall so as to have a structure supported by the lower cap. However, in the second embodiment of the present invention, a separate protrusion is not formed, and the side wall portion that is the circumferential surface of the partition wall 155 is formed. The inner wall of the lower cap 153 is welded (W) and fixed.

In addition, a plurality of oil inlet holes 155a are formed in the partition wall 155 so that oil inside the compressor flows in.

14 is a cross-sectional view showing a lower cap having a double wall according to a third embodiment of the present invention.

In the third exemplary embodiment of the present invention, the outer circumferential portion of the partition wall 255 is supported by the lower cap 253 through the support 260 in a state spaced apart from the inner wall of the lower cap 253 by a predetermined distance.

Here, the support 260 has a circular ring structure to form a space K 'between the lower cap 253 and the partition wall 255. The space K' is formed of a closed vacuum structure or a gas. It can be configured as a filled structure.

In addition, a sound absorbing member such as glass wool or rock wool, or a sound insulating member such as a rigid material, which is a noise blocking member, may be inserted into the space K to increase transmission loss.

Of course, the outer periphery of the space (K) is the oil in the compressor to serve to block the noise radiated to the outside.

15 is a cross-sectional view showing a lower cap having a double wall according to a fourth embodiment of the present invention.

Embodiments of the present invention described above are made of a structure in which a partition is installed inside the lower cap, but in the fourth embodiment of the present invention, a pedestal 355 is provided at the bottom of the lower cap 353 by a support 360. Forms a multi-walled structure. In addition, oil inlet holes 353a are formed in the lower cap 353 so that oil is introduced into the space forming the pedestal 355, and fluid is filled in the space between the lower cap 353 and the pedestal 355 to radiate. It is made to block the noise.

16 is a longitudinal sectional view showing a Z-compressor according to the fifth embodiment of the present invention.

The Z-compressor according to the first embodiment of the present invention described above has an electric mechanism part located at the upper side of the casing, and the compression mechanism part is located at the lower side. However, the Z-compressor according to the fifth embodiment of the present invention has an interior of the casing 450. A power mechanism unit 460 for generating a rotational force is located below, and a compression mechanism unit 470 for compressing and discharging fluid by the rotational force generated by the power mechanism unit 460 is located above the casing 450. .

In addition, the double wall structure of the lower portion of the casing 450 may be configured in a variety of configurations of the first to fourth embodiments described above.

On the other hand, in the present invention, the blocking performance of the radiation noise, the material of the partition wall also acts as a major factor, the material of the partition wall may be composed of the same material as the lower cap, but may be composed of a different material from the lower cap according to the design conditions. have.

The present invention has been made to solve the above problems, an object of the present invention to provide a compressor having a noise reduction device that can minimize the noise radiated to the outside of the compressor.

In addition, another object of the present invention is to provide a compressor having a noise reduction device capable of maximizing the amount of noise reduction by effectively blocking the noise radiation of the lower side of the compressor having a relatively high frequency noise generation.

In addition, another object of the present invention to provide a compressor having a noise reduction device that can effectively reduce the noise radiated to the outside in the compressor using the Z-plate.

Compressor having a noise reduction device according to the present invention for achieving the above object, characterized in that the at least a portion is made of a multi-wall structure, and has a hermetic casing is filled with fluid between the wall and the wall constituting the multi-wall. do.

The multi-wall is provided with an oil inflow passage so that oil contained in the casing is introduced and filled between the wall and the wall constituting the multi-wall.

The casing is configured such that its bottom portion has a multi-wall structure.

According to one embodiment of the invention, the partition wall is added to the bottom surface of the casing is configured to have a double wall structure.

According to another embodiment of the present invention, the bottom of the casing is provided with a pedestal has a multi-walled structure, and has a space for filling fluid between the casing and the pedestal.

According to one embodiment of the invention, the compressor is located in the upper side of the casing to generate a rotational force, and the lower portion of the casing is located inside the casing is discharged by compressing the fluid by the rotational force generated by the power mechanism It has a compression mechanism part.

According to another embodiment of the present invention, the compressor is located in the lower side of the casing to generate a rotational force, and located in the upper side of the casing and the fluid is compressed and discharged by the rotational force generated in the power mechanism portion It has a compression mechanism part.

In addition, the compressor having a noise reduction device according to the present invention for achieving the above object, a body having a cylindrical structure, an upper cap coupled to the upper portion of the body, a lower cap coupled to the lower portion of the body, It is characterized in that it has a hermetic casing including a partition wall provided inside the lower cap to form a multi-wall structure with the lower cap.

An oil inflow passage is formed in the partition wall so that oil in the casing flows in and is filled.

According to one embodiment of the invention, the partition wall is projected by the protrusions are supported by the lower cap.

The thickness of the partition wall than the thickness (t ₁₎ of the casing (t ₂₎ ratio (t ₂ / t ₁₎ is 0.01 to 2.0, the ratio of the distance (d) between the casing thickness than (t ₁₎ of the casing and the partition wall (d / t ₁₎ is configured such that of 0.0 to 3.0.

According to another embodiment of the present invention, the partition wall has a noise reduction device, characterized in that its peripheral surface is fixed to the inner wall of the lower cap.

According to another embodiment of the present invention, the partition wall is supported through the support to the lower cap with its circumferential surface spaced apart from the lower cap.

The partition wall may be formed of a material different from that of the lower cap.

The lower cap and the partition wall may be formed in a closed vacuum state.

A noise blocking member may be inserted between the lower cap and the partition wall.

In addition, a compressor having a noise reduction device according to the present invention for achieving the above object is a hermetic casing having at least a portion of a multi-wall structure, a cylinder assembly positioned in the casing having a suction flow path and a discharge flow path, A Z-plate which divides the internal space into a plurality of compression spaces in the cylinder assembly and rotates by a power mechanism unit to allow fluid to be sucked, compressed, and discharged, and each of the Z-plates is reciprocated in contact with both sides of the Z-plate. It characterized in that it comprises vanes for partitioning the compression space of the suction zone and the compression zone.

In addition, a compressor having a noise reduction device according to the present invention for achieving the above object, a hermetic casing, a cylinder assembly located in the casing having a suction passage and a discharge passage, and a plurality of internal spaces in the cylinder assembly A z-plate that divides into two compression spaces and rotates by a power mechanism to allow fluid to be sucked, compressed, and discharged, and compresses each of the compression spaces with the suction area while being reciprocated in contact with both sides of the Z-plate. And vane dividing into an area, and noise blocking means provided in the casing to block noise emitted to the outside.

The noise blocking means is configured of at least a portion of the hermetic case having a multi-wall structure.

Compressor having a noise reduction device according to the present invention as described above, the part of the casing is made of a multi-wall structure can minimize the noise radiated to the outside of the casing, in particular in the lower cap side of the compressor with a relatively high frequency noise generation By configuring to effectively block the noise emitted to provide an effect that can maximize the noise reduction of the compressor.

Compressor having a noise reduction device according to the present invention as described above, the portion of the casing is made of a multi-wall structure to provide an effect that can minimize the noise emitted to the outside of the casing.

In addition, the compressor having a noise reduction device according to the present invention is configured to effectively block the noise emitted from the lower cap side of the compressor having a relatively high frequency noise generation to provide an effect that can maximize the noise reduction amount of the compressor .

In particular, the compressor having a noise reduction device according to the present invention, by configuring the oil inside the casing between the double walls to be naturally filled, it also provides an effect that can effectively reduce the radiation noise generated when driving the compressor with a simple structure. .

In addition, the compressor having a noise reduction device according to the present invention also provides an effect of effectively reducing the noise radiated to the outside of the casing in the compression mechanism of the compressor in which the Z-plate is used.

Compressor having a noise reduction device according to the present invention having the above effect is applicable to not only Z-compressor illustrated in the embodiment of the present invention, but also reciprocating compressor, scroll compressor, centrifugal compressor, rotary compressor, etc. Of course.

In addition, the compressor having a noise reduction device according to the present invention can be easily applied to a refrigerator or an air conditioner using a refrigeration cycle consisting of a compressor, a condenser, an expansion valve, and an evaporator. Therefore, when the compressor according to the present invention is applied to a refrigerator or an air conditioner, the noise generated by the compressor, which is a main noise source when the refrigerator or the air conditioner is operated, can be minimized, thereby improving the reliability of the product as well as quieter and more comfortable surroundings. It will also provide the effect of encouraging the environment.

Claims (36)

A compressor having a noise reduction device, characterized in that at least a portion has a multi-wall structure, and has a hermetic casing in which fluid is filled between the wall and the wall constituting the multi-wall. The method of claim 1, And a fluid filled between the multiple walls is a gas. The method of claim 1, And a fluid filled between the multiple walls is a liquid. The method of claim 1, The multi-wall compressor is characterized in that the oil inlet passage is provided so that the oil contained in the casing flows between the wall and the wall forming the multi-wall is provided with a noise reduction device. The method of claim 1, And said casing is configured such that its bottom portion has a multi-wall structure. The method of claim 5, wherein A compressor having a noise reduction device, characterized in that the partition wall is added to the bottom surface of the casing to have a double wall structure. The method of claim 6, The partition wall is a compressor having a noise reduction device characterized in that the oil inlet passage is formed so that the oil in the casing is filled. The method of claim 1, The bottom of the casing is provided with a pedestal having a multi-wall structure, the compressor having a noise reduction device, characterized in that having a space filled with fluid between the casing and the pedestal. The method of claim 8, The casing has a noise reduction device, characterized in that the oil inlet is formed so that the oil flows into the space forming the pedestal. The method of claim 1, The compressor has an electric mechanism portion located in the upper side of the casing to generate a rotational force, and a compressor mechanism portion located in the lower side of the casing to compress and discharge the fluid by the rotational force generated in the electric mechanism portion. Compressor with noise reduction device. The method of claim 1, The compressor has a power mechanism portion located in the lower side of the casing to generate a rotational force, and a compressor mechanism portion located in the upper side of the casing to compress and discharge the fluid by the rotation force generated by the power mechanism portion. Compressor with noise reduction device. The method of claim 1, The compressor has a compressor mechanism for compressing and discharging the fluid by the rotational force generated by the electric mechanism; The compressor mechanism is fixed in the casing, the cylinder assembly having a suction flow path and a discharge flow path, and the inside of the cylinder assembly partitions the internal space into a plurality of compression space, while the fluid is sucked, compressed, discharge And a vane for dividing each of the compression spaces into a suction zone and a compression zone while reciprocating in contact with both sides of the Z-plate. Hermetic type including a body having a cylindrical structure, an upper cap coupled to an upper portion of the body, a lower cap coupled to a lower portion of the body, and a partition wall provided inside the lower cap to form a multi-wall structure with the lower cap. Compressor having a noise reduction device characterized in that it has a casing. The method of claim 13, The partition wall has a compressor, characterized in that the oil inlet passage is formed so that the oil in the casing is filled. The method of claim 13, The partition wall is a compressor having a noise reduction device, characterized in that the protrusions are supported by the lower cap. The method of claim 13, The partition wall is a compressor having a noise reduction device, characterized in that its peripheral surface is fixed to the inner wall of the lower cap. The method of claim 13, Compressor having a noise reduction device, characterized in that the ratio of the thickness (t ₂ ) of the partition wall to the thickness (t ₁ ) of the casing (t ₂ / t ₁ ) is 0.01 ~ 2.0. The method of claim 13, And a ratio (d / t ₁ ) of the distance (d) between the casing and the partition wall to a thickness (t ₁ ) of the casing is 0.0 to 3.0. The method of claim 13, The partition wall is a compressor having a noise reduction device, characterized in that the support is supported on the lower cap in a state that the peripheral surface is spaced from the lower cap. The method of claim 13, The partition wall is a compressor having a noise reduction device, characterized in that formed of a material different from the material of the lower cap. The method of claim 13, Compressor having a noise reduction device, characterized in that the vacuum between the lower cap and the partition is closed. The method of claim 13, And a noise blocking member is inserted between the lower cap and the partition wall. The method of claim 13, The lower cap and the partition wall is a compressor having a noise reduction device, characterized in that the upper structure is composed of a fan (PAN) is coupled to each other. A hermetic casing having a multi-walled structure, at least a portion thereof, a cylinder assembly positioned in the casing having a suction flow path and a discharge flow path, and partitioning an internal space into a plurality of compression spaces within the cylinder assembly, while rotating by a power mechanism portion. Noise reduction, characterized in that it comprises a Z-plate for inhaling, compressing, and discharging fluid, and vanes for partitioning each of the compressed spaces into a suction zone and a compression zone while being reciprocated in contact with both sides of the Z-plate. Compressor with device. The method of claim 24, And a noise reduction device between the multiple walls of the casing. The method of claim 24, Compressor having a noise reduction device characterized in that the fluid is filled between the multiple walls of the casing. The method of claim 24, And a noise blocking member is provided between the multiple walls of the casing. The method of claim 24, And said casing is configured to have a multi-wall structure at the bottom thereof. The method of claim 24, A compressor having a noise reduction device, characterized in that the partition wall is added to the bottom surface of the casing to have a double wall structure. The method of claim 29, The partition wall is a compressor having a noise reduction device characterized in that the oil inlet passage is formed so that the oil in the casing is filled. A cylinder assembly having a hermetic casing, a suction passage and a discharge passage located in the casing, and partitioning an internal space into a plurality of compression spaces within the cylinder assembly, while rotating by a power mechanism unit so that fluid is sucked, compressed and discharged. Z-plates, vanes for partitioning each of the compression spaces into suction and compression regions while contacting both surfaces of the Z-plates, and blocking the noise emitted inside the casing. Compressor having a noise reduction device characterized in that it comprises a noise blocking means. The method of claim 31, wherein The noise blocking means is a compressor having a noise reduction device, characterized in that at least a portion of the hermetic case is composed of a multi-wall structure. A refrigerator using a refrigeration cycle including a compressor, a condenser, an expansion valve, and an evaporator, And the compressor has a hermetic casing at least partially formed in a multi-walled structure and fluid-filled between the walls and the walls of the multi-walled structure. The method of claim 33, wherein The multi-wall refrigerator is characterized in that the oil inlet passage is provided so that the oil contained in the casing flows between the wall and the wall forming the multi-wall. In an air conditioner using a refrigeration cycle including a compressor, a condenser, an expansion valve, and an evaporator, And the compressor has a hermetic casing at least partially formed of a multi-walled structure, and fluid-filled between the walls and the walls of the multi-walled body. 36. The method of claim 35 wherein The multi-wall air conditioner, characterized in that the oil inlet passage is provided so that the oil contained in the casing flows between the wall and the wall forming the multi-wall.