KR102368980B1 - Oil separator and air-conditioner using the same - Google Patents

Abstract

The present invention relates to an oil separator and an air conditioner using the same. In the present invention, since the internal space of the oil separator is partitioned to form a noise reduction chamber, it is possible to prevent the pulsating sound of the compressor from being transmitted to the indoor unit. Therefore, since a separate silencer is not provided, there is an advantage that the space utilization of the outdoor unit can be improved.

Description

Oil separator and air conditioner using same

The present invention relates to an outdoor unit of an air conditioner.

An air conditioner is a home appliance for maintaining indoor air in the most suitable state according to use and purpose. For example, it adjusts the indoor to a cool cooling state in summer and a warm heating state in winter, and also adjusts the indoor humidity and adjusts the indoor air to a pleasant clean state.

Such an air conditioner may be classified into a separate type air conditioner in which an indoor unit and an outdoor unit are separated from each other, and an integrated air conditioner in which an indoor unit and an outdoor unit are combined into one device, depending on whether the indoor unit and the outdoor unit are separated.

Meanwhile, depending on the installation of the air conditioner, it may be divided into a wall-mounted air conditioner and a frame-type air conditioner configured to be mounted on a wall, and a slim type air conditioner configured to be installed in a living room. In addition, depending on the capacity of the indoor unit, the single type air conditioner has a capacity that can drive one indoor unit and is configured to be used in a narrow place such as a home, and a medium or large air conditioner with a very large capacity for use in a company or restaurant It can be divided into a tile and a multi-air conditioner having a capacity sufficient to drive a plurality of indoor units.

In the air conditioner, a refrigeration cycle is driven. In the device for driving the refrigeration cycle, a compressor for compressing the refrigerant, a condenser for condensing the refrigerant compressed in the compressor, an expansion device for expanding the refrigerant that has passed through the condenser, and the refrigerant that has passed through the expansion device is evaporated An evaporator is included.

Meanwhile, an oil separator may be further installed in the air conditioner. The oil separator is a device that separates oil from the refrigerant discharged from the compressor, and passes the separated oil back to the compressor to prevent the refrigerant used for driving the compressor from circulating in the refrigeration cycle.

In the compressor, the gaseous refrigerant is compressed at high temperature and high pressure, and a lot of noise is generated due to compression during the compression process. It is common for these noises to have a frequency band of 200Hz to 5KHz.

Noise in a frequency band of 1KHz or higher may be blocked by a sound-absorbing material, but noise in a frequency band of less than 1KHz is limited to be blocked by the sound-absorbing material. Accordingly, there is a problem in that the user feels inconvenience due to the noise generated by the compressor.

In particular, when the refrigerant compressed in the compressor flows directly into the outdoor heat exchanger during heating operation, the pressure pulsation sound generated by the compressor is transmitted to the indoor unit along the pipe, so that the noise of the compressor provided in the outdoor unit is also transmitted indoors. there was.

To this end, recently, attempts have been made to reduce transmitted noise by installing a muffler in a pipe connected from an outdoor unit to an indoor unit.

The related prior literature is as follows.

Application No. (Application Date): 10-2006-0002462 (January 09, 2006)

Title of invention: silencer of air conditioner

However, since the muffler includes a plurality of spaces whose volumes change for noise prevention, the volume is considerable, there is a problem in securing an installation space for the outdoor unit, and there is a problem in that the production cost is increased.

On the other hand, since the oil separator separates oil by using the difference in specific gravity between the refrigerant and oil, a space in which the refrigerant and oil can be separated and stored is required. Therefore, the volume occupied by the oil separator in the outdoor unit is large.

As a result, when the muffler and the oil separator are separately configured in the outdoor unit, the volume of the outdoor unit may increase, the arrangement with other parts inside the outdoor unit becomes complicated, the use of the space inside the outdoor unit is limited, and the production cost increases. has a

The present invention has been proposed to solve this problem, and an object of the present invention is to appropriately reduce noise generated by a compressor.

An object of the present invention is to improve space utilization of an air conditioner by implementing a device for reducing compressor noise and an oil separator as one device.

In addition, even if a device for reducing compressor noise is installed in the oil separator, an object of the oil separator is to prevent oil from accumulating therein.

An air conditioner according to an aspect of the present invention includes: a housing forming a space in which refrigerant and oil flow; It is located in the interior of the housing, includes a partition for partitioning the space, the space includes: a first space; and a second space part separated from the first space part, wherein the first space part and the second space part may form a noise reduction chamber for reducing the noise of the refrigerant.

In addition, the refrigerant and oil guided through the inlet pipe may be introduced into the first space located below the partition.

Also, the volume of the first space may be larger than that of the second space, so that the first space may attenuate noise in a low frequency band, and the second space may attenuate noise in a high frequency band.

In addition, it may include a connection pipe passing through the partition to transfer the refrigerant of the first space to the second space.

In addition, the connection pipe extends from the partition part to the first space part, communicates with a first connection pipe and the first connection pipe spaced apart from the lower side of the oil return pipe, and in the partition part, the second space It may include a second connection pipe extending to the portion and spaced apart from the upper side of the refrigerant outlet pipe.

In addition, the housing includes a main body; upper part; and a lower surface portion, wherein the inlet pipe passes through the outer circumferential surface of the main body portion, the oil return tube is connected to the lowermost side of the lower surface portion, and the refrigerant outlet tube may be connected to the return side of the upper surface portion.

In addition, the inflow pipe includes an external inflow pipe and an internal inflow pipe, the external inflow pipe includes a bent part for changing the direction of the external inflow pipe, and the bent part is the internal inflow pipe on the inner circumferential surface of the main body It can be bent to contact.

In addition, irregularities including mountains and valleys may be formed at the end of the internal inlet pipe.

In addition, by passing through the partition, it may include a penetrating portion for moving the oil separated in the second space to the first space.

Also, the height of the second space may be shorter than 3/8 of the diameter of the housing, and the length of the first connecting pipe may be shorter than 2/3 of the diameter of the housing.

According to the present invention, since noise can be reduced through the internal space of the oil separator, the pulsating sound generated by the compressor can be reduced.

In particular, by dividing the internal space of the oil separator through the partition, it is possible to attenuate the noise in the low frequency region as well as the noise in the high frequency region.

In addition, since noise can be reduced without a separate configuration such as a muffler, the size of the outdoor unit can be reduced, and production cost can be reduced.

In addition, since the direction of the refrigerant flowing into the oil separator and the direction of the refrigerant flowing out of the oil separator are configured to be different, the noise can be reduced by extending the transmission path of the noise.

In addition, by forming irregularities including mountains and valleys at the end of the inlet pipe through which the refrigerant and oil are introduced into the oil separator, it is possible to prevent noise due to resonance.

In addition, a penetrating portion is placed in the partition that divides the inner space. It is possible to prevent oil from accumulating inside the oil separator.

In addition, by adjusting the height of the internal space and the length of the connecting pipe passing through the partition through the partition, it is possible to change the characteristics of noise attenuation.

1 is a perspective view illustrating an outdoor unit of an air conditioner according to an embodiment of the present invention;
2 is a block diagram illustrating a configuration of an air conditioner and a flow of a refrigerant according to an embodiment of the present invention;
3 is a perspective view illustrating an oil separator of an air conditioner according to an embodiment of the present invention;
Fig. 4 is a cross-sectional view taken along line A-A' of Fig. 3;
5 is a view showing a transmission loss of the air conditioner according to an embodiment of the present invention.

1 is a perspective view illustrating an outdoor unit of an air conditioner according to an embodiment of the present invention, and FIG. 2 is a configuration diagram illustrating a configuration of the air conditioner according to an embodiment of the present invention and a flow of a refrigerant.

1 and 2 , the air conditioner according to the embodiment of the present invention includes an outdoor unit 10 that exchanges heat with outdoor air, and an indoor unit (not shown) disposed in an indoor space to condition indoor air. .

The outdoor unit 10 includes a case 11 that forms an exterior and contains a plurality of parts. The case 11 includes a suction unit (not shown) for sucking outdoor air and a discharge unit 12A for discharging the suctioned air after heat exchange. The discharge part 12A may be formed in front of the case 10 .

Inside the case 10, a compressor 20 to be described later, a flow conversion unit 30, an outdoor heat exchanger 50, an outdoor solenoid valve 60, a gas-liquid separator 80, and a plurality of refrigerant pipes are provided. .

The outdoor unit 10 includes a compressor 20 for compressing a refrigerant, and an oil separator 100 disposed on the outlet side of the compressor 20 to separate oil from the refrigerant discharged from the compressor 20 . do. Details of the oil separator 100 will be described later.

At the outlet side of the oil separator 100 , a flow conversion unit 30 , which guides the refrigerant discharged from the compressor 20 toward the outdoor heat exchanger 50 or an indoor unit (not shown) is provided. For example, the flow switching unit 30 may include a four-way valve.

In the flow conversion unit 30, a first connection pipe 41 connected to the outdoor heat exchanger 50, a second connection pipe 42 connected to the gas-liquid separator 80, and the indoor unit (not shown) It may be connected to the third connection pipe 43 connected to.

When the air conditioner performs a cooling operation, the refrigerant flows from the flow conversion unit 30 into the outdoor heat exchanger 50 through the first connection pipe 41 . On the other hand, when the air conditioner performs a heating operation, the refrigerant flows from the flow conversion unit 30 to the indoor heat exchanger side of the indoor unit (not shown) through the third connection pipe 43 .

The outdoor heat exchanger 50 exchanges heat with external air and refrigerant, and functions as a condenser when the air conditioner operates for cooling, and functions as an evaporator when the air conditioner operates for heating.

When the air conditioner operates for cooling, the refrigerant that has passed through the outdoor heat exchanger 50 passes through the expansion valve 60 . That is, the expansion valve 60 may be disposed on the outlet side of the outdoor heat exchanger 50 based on the cooling operation. During the cooling operation, the expansion valve 60 is completely opened, so that the refrigerant pressure-reducing action is not performed.

The refrigerant that has passed through the expansion valve 60 flows to the indoor unit through the first indoor pipe 70 , and the refrigerant evaporated in the indoor heat exchanger (not shown) passes through the second indoor pipe 71 to the outdoor unit 10 . is introduced into

The refrigerant introduced into the outdoor unit flows into the flow conversion unit 30 through the third connection pipe 43 , and flows out from the flow conversion unit 30 through the second connection pipe 42 .

The refrigerant that has passed through the flow conversion unit 42 flows to the gas-liquid separator 80 . The gas-liquid separator 80 is configured to separate the gaseous refrigerant before the refrigerant flows into the compressor 20 . The separated gaseous refrigerant may be introduced into the compressor 20 .

3 is a perspective view illustrating an oil separator of an air conditioner according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line A-A' of FIG. 3 .

3 and 4 , the air conditioner according to the embodiment of the present invention includes an oil separator 100 .

The oil separator 100 separates oil from the refrigerant discharged from the compressor 20 and returns it to the compressor 20, thereby preventing oil from flowing in the refrigerating cycle, thereby increasing the efficiency of the refrigerating cycle. It is a configuration that allows

The oil separator 100 includes a housing 110 having an internal space for storing oil.

Specifically, the housing 110 includes a main body 112 having a substantially cylindrical shape, the upper and lower portions of which are opened. The main body 112 includes an outer peripheral surface having a set curvature.

The housing 110 further includes an upper surface portion 111 provided on the upper side of the body portion 112 . A refrigerant outlet pipe 154 to be described later is coupled to the upper surface portion, and is configured to extend obliquely downward from a portion to which the refrigerant outlet pipe 154 is coupled.

For example, the upper surface portion 111 may have a funnel shape in which the cross-sectional area increases downward from the refrigerant outlet pipe 154 .

The housing 110 further includes a lower surface portion 113 provided below the body portion 112 . An oil return pipe 153 to be described later is coupled to the lower surface 113 and is configured to extend obliquely upward from a portion to which the oil return pipe 153 is coupled.

For example, the lower surface portion 113 may have a funnel shape in which the cross-sectional area increases upward from the oil return pipe 153 .

Accordingly, the oil separator 100 may include an internal space surrounded by the upper surface portion, the main body portion, and the lower surface portions 111 , 112 , 113 . The refrigerant and oil may be stored in the inner space, and the oil may be separated from the lower side and the refrigerant from the upper side due to a specific gravity difference.

The oil separator 100 includes a refrigerant outlet 115 provided at the uppermost side of the upper surface portion, an oil return port 116 provided at the lowermost side of the lower surface portion, and an inlet 114 disposed on the body portion. can do.

A refrigerant outlet pipe 154, an oil return pipe 153, and an inlet pipe 151, which will be described later, are respectively fastened to the refrigerant outlet 115, the oil return port 116, and the inlet port 114, so that the oil separator 100 ) to allow refrigerant and oil to flow into the internal space.

In this case, the inner space may be driven into a noise reduction chamber capable of attenuating a pulsating sound generated by the compressor. Details will be described later.

The refrigerant and oil may be stored in the inner space, and the oil may be separated from the lower side and the refrigerant from the upper side due to a specific gravity difference.

The oil separator 100 includes an inlet pipe 150 for introducing the refrigerant compressed in the compressor 20 into the oil separator 100 . At this time, the oil lubricating the compressor 20 may leak from the compressor 20 into the inlet pipe 150 .

The inlet pipe 150 extends from the compressor 20 , is bent so as to pass through the inlet 114 provided in the main body 112 , and extends inside the oil separator 100 .

In the inlet pipe 150 , an external inflow pipe 151 disposed on the outside of the body part 112 and an internal inflow pipe connected to the external inflow pipe 151 and disposed inside the body part 112 . (152) is included.

The external inlet pipe 151 has a first part 161 extending from the compressor 20 , a bent part 162 extending from the first part 161 and bent, and the main body at the bent part 162 . A second part 163 connected to the part 112 is included.

The first part 161 may extend in a vertical direction, and the second part 163 may extend in a horizontal direction. The bent part 162 is provided between the first and second parts 161 and 163 , and the extension direction of the external inlet pipe 151 is changed from a vertical direction to a horizontal direction.

For example, when the first part 161 is disposed to be parallel to the body part 112 , the bent tube 162 is disposed such that the second part 163 is perpendicular to the body part 112 . can do.

The bent pipe 162 shifts the direction in which the refrigerant flows in and the direction in which the refrigerant is discharged from the inside of the oil separator 100. It can be configured to be misaligned, so that noise can be reduced primarily.

More specifically, as shown in the drawing, the refrigerant flowing through the inlet pipe 150 is discharged in the horizontal direction through an internal inlet pipe 152 to be described later, and the pulsating sound generated by the compressor and transmitted along the refrigerant is The inner space is reflected in the horizontal direction and proceeds.

On the other hand, since the refrigerant outlet pipe and the oil return pipe through which the refrigerant flows are formed to extend in the longitudinal direction from the uppermost or lowermost side of the inner space, the sound waves including the pulsating sound reflected in the longitudinal direction are transmitted to the refrigerant outlet pipe and the oil. Transmission through the return pipe is limited.

The internal inlet pipe 152 discharges the refrigerant introduced through the inlet pipe to the internal space of the main body. In this respect, it can be called a 'discharge part'.

The inner inlet pipe 152 extends from the second part 163 and may be accommodated in the oil separator 100 .

The inner inlet pipe 152 includes a flow direction of the refrigerant and an inclined end. That is, one point of the end may be formed to extend more than the other point of the end.

In more detail, the first direction in which the end portion extends is configured to intersect the second direction in which the inner inlet pipe 152 extends. For example, the angle at which the first and second directions intersect may be less than 90 degrees.

For example, when the inner inlet pipe 152 is a circular pipe, the end may be formed in an elliptical shape.

In addition, the end portion may be formed to face the inner circumferential surface of the body portion 112 , and one point of the end of the inner inlet pipe may be configured to contact the body portion 112 .

In this configuration, the refrigerant discharged from the inner inlet pipe 152 flows in contact with the inner circumferential surface of the main body 112, and by rotating along the inner circumferential surface of the curved body 122, oil separation is better can happen

In addition, irregularities including mountains and valleys may be formed at the end. In another aspect, the end may be configured to have a sawtooth shape.

This is to prevent resonance from occurring at the end by the high-speed refrigerant discharged and from generating noise according to the resonance.

The oil separator 100 further includes a refrigerant outlet pipe 154 fastened to the refrigerant outlet 115 and an oil return pipe 153 fastened to the oil return port 116 .

In the refrigerant outlet pipe 154, only the refrigerant from which oil has been removed flows. The refrigerant outlet pipe 154 may extend from the oil separator 100 to the flow conversion unit 30 , and is located above the oil separator 100 so that the gaseous refrigerant can flow out.

The oil return pipe 153 recovers the oil separated by the oil separator 100 back to the compressor 20 . The oil return pipe 153 extends from the oil separator 100 to the compressor 20 , and allows the oil accumulated in the lower side of the oil separator 100 to be recovered.

Since the oil has a higher specific gravity than the gaseous refrigerant, it is stored at the lower side, and the gaseous refrigerant has a lower specific gravity than the oil, and is stored at the upper side. Accordingly, the refrigerant outlet pipe 154 is connected to the refrigerant outlet 115 provided at the upper side, and the oil return pipe 153 is connected to the oil return port 116 provided at the lower side.

The oil separator 100 includes a partition 118 that partitions the inner space. The partition part 118 may be formed in a circular plate shape corresponding to the cross-section of the oil separator 100 , and the edge of the partition part 118 is configured to be in contact with the inner circumferential surface of the body part.

That is, the partition 118 may be formed to extend from one point of the inner circumferential surface of the housing to another point of the inner circumferential surface of the housing.

The partition part 118 may divide the internal space into a first space part 131 and a second space part 130 . Accordingly, it is possible to form a noise-reducing room that is provided individually.

The first space part 131 is a space located below the partition part 118 and is a space between the lower surface part 113 and the partition part 118 , and the second space part 130 is the partition part 118 . As a space positioned above the part 118 , it is a space between the upper surface part 111 and the partition part 118 .

The partition portion 118 may be formed such that the first and second space portions 130 and 131 have different heights. For example, the first space 131 may be formed to be larger than the second space 130 .

In this case, the first space 131 having a large volume is a noise reduction chamber that reduces the low-frequency component of the pulsating sound, and the second space 130 having a small volume reduces the high-frequency component of the pulsating sound. It is a noise-reducing room.

In addition, the partition 118 may be formed above the inlet 114 . Accordingly, the refrigerant of the inlet pipe 150 may be introduced into the first space 131 .

The oil separator 100 may further include connecting pipes 155 and 156 that pass through the partition 118 and communicate with the space 130 and 131 .

The connecting pipes 155 and 156 communicate with the first connecting pipe and the first connecting pipe extending downward with respect to the dividing part 118 , and the second connecting pipe extending upward with respect to the dividing part 118 . Includes connectors. The first connecting pipe and the second connecting pipe may have the same diameter and may be formed as one pipe.

The first connection pipe 155 may be positioned to be vertically spaced apart to correspond to the oil return pipe 153 , and the second connection pipe 156 may be disposed in a vertical direction to correspond to the refrigerant outlet pipe 154 . may be located spaced apart from each other.

The refrigerant in the first space 131 may be transferred to the second space 130 through the connection pipes 155 and 156 . That is, the refrigerant of the first space 131 may be sucked into the first connection pipe 155 , and discharged through the second connection pipe 156 to move to the second space 130 .

Here, the noise not removed from the first space 131 may be transmitted to the second space 130 through the connection pipes 155 and 156 .

At this time, since the cross-sectional area of the second space 130 is larger than the cross-sectional area of the connection pipes 155 and 156 , noise is dispersed in the second space 130 , and the dispersed noise is generated in the second space. It disappears while being repeatedly reflected inside the part 130 . On the other hand, the refrigerant moved through the connection pipes 155 and 156 may flow to the flow conversion unit 30 through the refrigerant outlet pipe 154 .

At this time, the length of the first connection pipe 155 extending downward from the partition 118 and the height of the second space 130 positioned above the partition 118 from the partition 118 are specific for attenuating noise attenuation. can influence More details on this will be provided later.

The compartment 118 includes a penetrating portion 138 penetrating the compartment.

The penetrating portion 138 is at least one hole penetrating the partition 118 , and the through portion 138 is the first space 131 through which the oil located in the second space 130 passes. provided to be discharged. The through portion 138 is provided in plurality, and may be configured symmetrically with respect to the connecting tubes 155 and 156 .

The penetrating portion 138 is the lower portion of the second space 130 , that is, the upper surface of the partition 118 , in which the oil moved to the second space 130 without being separated in the first space 131 . It prevents accumulation of oil in the oil separator 100 so that oil does not accumulate inside the oil separator 100 .

Hereinafter, the flow of the refrigerant and oil flowing through the oil separator 100 will be described.

First, the refrigerant is compressed in the compressor 20 and flows through the inlet pipe 150 . At this time, the oil inside the compressor 20 may flow out like a refrigerant.

The refrigerant and oil flowing through the inlet pipe 150 are bent in the bent pipe 151 , pass through the main body 112 of the oil separator, and are located inside the oil separator 112 . (152) is discharged.

The refrigerant and oil discharged from the inner inlet pipe 152 flow into the inner space of the first space 131 , and rotate along the inner circumferential surface of the main body 112 .

At this time, since the specific gravity of the oil is large, it moves downward of the first space, and the refrigerant has a small specific gravity, so it can move upwards of the first space. On the other hand, the sound wave including the pulsating sound proceeds in the discharge direction regardless of the density, is repeatedly reflected in the interior of the first space, and is gradually attenuated in size. Since the first space has a larger volume than the second space, there is an effect of improving low-frequency performance of noise.

And, the oil accumulated in the lower part of the first space flows to the oil return pipe 153 through the oil return port 116 provided in the lower surface 113 of the first space. The oil flowing through the oil return pipe 153 is returned to the compressor 20 again.

The refrigerant moving upward in the first space passes through the partition 118 through the first and second connection pipes 155 and 156 and is discharged to the second space 130 . At this time, the oil that is not separated in the first space and the sound wave that is not attenuated in the first space may move to the second space like the refrigerant.

The refrigerant moved to the second space is moved upward and flows to the flow conversion unit 30 through the refrigerant outlet 115 .

Oil not separated in the first space may be separated in the second space, accumulate on the upper surface of the partition 118 , and move back to the first space through the through portion 138 . In addition, the pulsating sound including the high-frequency component that is not attenuated in the first space is dispersed and repeatedly reflected inside the second space to reduce the size.

6 shows the noise damping performance according to the diameter (A) of the oil separator, the height (B) of the second space, and the length (C) of the first connection pipe.

Here, the transmission loss means the amount of noise that is lost as the noise is transmitted through a medium, so that the greater the transmission loss, the better the noise reduction performance. In addition, the oil separation rate means the amount of oil recovered from the oil separator with respect to the amount of oil discharged from the compressor. In the air conditioner, the separation rate of the oil separator must be about 90% or more, so that a desired oil separation performance can be obtained. Based on this, an experiment was performed by varying the diameter (A) of the oil separator, the height (B) of the second space, and the length (C) of the first connector. The results of the experiment are shown in Table 1 and FIG. 6 above.

case Diameter of oil separator (A) [mm] Height of the second space (B) [mm] Length of the first connector (C) [mm] oil separation rate One 75 48 26 91.9 2 75 68 26 91.0 3 75 48 36 95.0 4 75 68 36 78.7

Referring to FIG. 6 , the main pulsating noise generated by the compressor is distributed from approximately 70 Hz to 230 Hz. When two mufflers are installed, the transmission loss increases in the low-frequency region and the high-frequency region by using a specific frequency as a reference (about 70Hz in the drawing).

When the oil separator 100 is configured as shown in Table 1, it can be seen that the transmission loss is increased in both the low-frequency and high-frequency regions based on a specific frequency for each case.

In particular, in the low frequency band below 120Hz, the transmission loss is larger than when two mufflers are installed. This means that in the low frequency band of 120 Hz or less, the oil separator 100 shows better noise removal performance than when two mufflers are installed.

At this time, the height (B) of the second space portion may be formed to be shorter than 3/8 of the diameter (A) of the oil separator, and the length (C) of the first connection pipe is the diameter (A) of the oil separator ) can be formed shorter than 2/3 of the

Claims (17)

a housing forming a space in which refrigerant and oil flow;
an inlet pipe coupled to the first side of the housing and guiding the refrigerant and oil discharged from the compressor to the housing;
an oil return pipe coupled to the second side of the housing and through which oil separated from the space is discharged;
a refrigerant outlet pipe coupled to the third side of the housing and through which the refrigerant separated from the space is discharged; and
located inside the housing,
It is composed of a partitioning part dividing the space into a first space and a second space,
At least a portion of the partition includes a through hole configured to pass through, so that the oil separated from the second space can move to the first space,
The first connecting pipe and the second connecting pipe are integrally configured, and the first and second connecting pipes extend from the first space through the partition to the second space,
An end of the first connecting pipe is located in the first space, and an end of the second connecting pipe is located in the second space.
The method of claim 1,
The partition portion extends from one point on the inner circumferential surface of the housing to another point on the inner circumferential surface of the housing.
delete The method of claim 1,
An oil separator in which a volume of the first space is larger than a volume of the second space.
5. The method of claim 4,
The first space part attenuates the noise of the first band, the second space part attenuates the noise of the second band,
The first band is an oil separator, characterized in that the lower frequency band than the second band.
delete delete delete The method of claim 1,
The first connecting pipe is disposed to be spaced apart above the oil return pipe, and the second connecting pipe is disposed to be spaced apart from the lower side of the refrigerant outlet pipe.
The method of claim 1,
The housing includes a body portion; a lower surface portion provided on the lower side of the body portion; and an upper surface portion provided on an upper side of the body portion,
The first side is formed on the outer peripheral surface of the main body of the housing,
The second side portion is formed on the lower surface of the housing, and the third side portion is formed on the upper surface of the housing.
11. The method of claim 10
The inlet pipe passes through the outer circumferential surface of the main body, the oil return pipe is connected to the lowermost side of the lower surface part, and the refrigerant outlet pipe is connected to the return side of the upper surface part.
11. The method of claim 10
The inlet pipe is
an external inlet pipe located outside the main body and extending from the compressor to an outer circumferential surface of the housing; and
The oil separator including an internal inflow pipe extending from the external inflow pipe and positioned inside the body part.
13. The method of claim 12,
The external inlet pipe,
a first part having an end for introducing a fluid and extending downwardly;
a second part for guiding the fluid laterally towards the housing;
and a bent part connected to the first part and the second part to change an extension direction of the external inlet pipe.
13. The method of claim 12,
An oil separator, characterized in that at an end of the internal inlet pipe, irregularities including mountains and valleys are formed.
2. The method of claim 1
Further comprising a penetrating portion penetrating the partition,
The oil separated in the second space is moved to the first space through the penetrating part.
The method of claim 1,
The height of the second space portion is formed to be shorter than 3/8 the diameter of the housing.
The method of claim 1,
The length of the first connecting pipe is formed to be shorter than 2/3 of the diameter of the housing.

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