KR20200020203A - Scroll compressor with oil recovery means - Google Patents

Abstract

The present invention relates to a scroll compressor with an oil recovery means. According to an embodiment of the present invention, the scroll compressor with an oil recovery means comprises: a center housing; a rear housing forming a discharge chamber allowing a mixed fluid in which a cooling fluid and oil are mixed to be discharged thereto; a fixed scroll fixed to the inside of the center housing and provided with a fixed lap; a rotating scroll having a rotating lap meshed with the fixed lap; a back pressure chamber to apply pressure to tightly attach the rotating scroll towards the fixed scroll; an oil separator which is positioned in the discharge chamber and separates oil from a discharged cooling fluid; and an oil return flow path to return oil separated by the oil separator into the back pressure chamber. A first groove of a circular shape is formed on the outer circumferential surface of the rear housing or the outer circumferential surface of the center housing facing the rear housing, and the oil separated by the oil separator is decompressed while flowing along the first groove. Oil discharged to the discharge chamber can be returned into the back pressure chamber without installing an additional decompressing means in the oil return flow path.

Description

Scroll compressor with oil recovery means

The present invention relates to a scroll compressor equipped with an oil recovery means, and more specifically, an oil return flow path through which oil separated from the discharge chamber can be returned and a circular groove is formed along the housing sealing surface of the scroll compressor. The present invention relates to a scroll compressor having an oil decompression structure capable of decompressing oil without an oil transfer member.

An air conditioner is installed in a car to remove temperature, air cleanliness, and fog or frost of a vehicle window. Such an air conditioner generally uses a low-temperature, low-pressure gaseous refrigerant drawn from an evaporator. Compressor is compressed to the refrigerant and sent to the condenser.

The compressor is largely divided into a reciprocating compressor that compresses the refrigerant according to the reciprocating motion of the piston and a rotary compressor that compresses the refrigerant by the rotational motion. The reciprocating compressor is again divided into a plurality of pistons using a crank according to the transmission method of the driving source. It is divided into a crank compressor to deliver, a swash plate compressor using a rotating shaft with a swash plate, and a rotary compressor such as a vane rotary compressor using a rotating rotary shaft and vanes, and a scroll compressor using a rotating scroll and a fixed scroll. Divided.

Among the various compressors, the scroll compressor has a continuous suction, compression, and discharge. Compared with other compressors, the scroll compressor has relatively low vibration and noise generated in the operation process and has a relatively high compression ratio. Widely used.

The scroll compressor generally includes a fixed scroll having a fixed wrap and a swing scroll having a swing wrap engaged with the fixed wrap, wherein the swing scroll is coupled to a rotating shaft of the electric motor to be fixed by the driving force generated by the electric motor. The image is pivoted, and as a result, the volume of the compression chamber formed between the fixed wrap of the fixed scroll and the swing wrap of the swing scroll continuously changes, thereby compressing the refrigerant introduced into the compression chamber.

Since the scroll compressor has a friction between the swing scroll and the fixed scroll in the refrigerant compression process due to the above structure, lubrication between the fixed scroll and the swing scroll is very important to improve the life of the scroll compressor.

Conventionally, a method of lubricating between a fixed scroll and a rotating scroll by injecting a mixed fluid of refrigerant and oil into a compression chamber is mainly used. According to the method, the structure for supplying oil into the compression chamber can be simplified. However, there is a problem that the amount of oil in the compression chamber is reduced by partially discharging the oil together with the refrigerant.

In order to solve the above problem, there has been proposed a structure in which an oil separator is installed in the discharge chamber to collect oil from the mixed fluid and return the collected oil back into the compressor, but in order to return oil in the compressor, The pressure reducing means must be installed in the oil return flow path, and in order to install the pressure reduction means in the oil return flow path, the oil return flow path must be formed to be long, so that a separate oil transfer member for forming the oil return flow path is essential. There was a problem.

In other words, if additional elements such as an oil conveying member are added, there is a problem that the mass production of the scroll compressor is inferior and the structure in the scroll compressor housing is complicated, so that the oil return flow path is separated by an oil separator without forming a long length of the oil return flow path. There is a need for a new oil return structure capable of decompressing used oil.

Korean Laid-Open Patent Publication (Publication No. 10-2016-0138750) “Compressor with oil recovery means”

The present invention forms a circular groove along the housing sealing surface of the scroll compressor and allows the oil separated in the oil separator to flow along the groove, so that the oil can be reduced in pressure without installing additional pressure reducing means in the oil return flow path. It is an object to provide a scroll compressor equipped with oil recovery means.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

In order to solve the above problems, the present invention in one embodiment the center housing; A rear housing forming a discharge chamber through which the mixed fluid mixed with the cooling fluid and the oil is discharged; A fixed scroll fixed to the center housing and having a fixed wrap; A turning scroll having a turning wrap engaged with the fixed wrap; A back pressure chamber for applying pressure to bring the swing scroll into close contact with the fixed scroll direction; An oil separator located in the discharge chamber and separating oil from the discharged cooling fluid; And an oil return flow path for returning the oil separated by the oil separator into the back pressure chamber, wherein an outer circumferential surface of the rear housing or an outer circumferential surface of the center housing facing the rear housing is formed with a circular first groove. It provides a scroll compressor with an oil recovery means, characterized in that the oil separated by the oil separator is reduced in pressure while flowing along the first groove.

Here, the oil return flow path is formed to communicate with the inside of the center housing, in particular characterized in that it is formed to communicate between the first groove and the back pressure chamber.

In addition, a collecting space for collecting oil separated by the oil separator may be formed at a lower end of the discharge chamber.

The collection space may include a first space in which oil separated in the oil separator is collected; A second space portion formed adjacent to the first space portion and collecting oil; A communication hole communicating with the first space part and the second space part; And a discharge hole communicating the second space portion and the first groove.

At this time, the foreign matter contained in the oil collected in the first space portion is loaded on the lower end of the first space portion by gravity, the oil separated foreign matter is moved to the second space portion through the communication hole, the discharge It is characterized by flowing into the first groove through the hole.

In addition, an oil filter may be disposed in the communication hole.

A first gasket may be disposed between the rear housing and the center housing of the scroll compressor equipped with oil recovery means according to an embodiment of the present invention.

In this case, at least one hole is formed in the first gasket, and the oil flowing in the first groove of the rear housing may flow in the direction of the center housing through the hole.

In addition, a circular second groove may be formed on an outer circumferential surface of the center housing, and the oil inside the back pressure chamber may be decompressed while flowing along the second groove.

The scroll compressor equipped with the oil recovery means according to an embodiment of the present invention can reduce the separated oil by forming a circular groove in the housing sealing surface of the scroll compressor without installing the pressure reducing means in the oil return flow path. It is possible to simplify the internal structure of the housing of the scroll compressor, and consequently to increase the mass productivity of the scroll compressor.

In addition, the scroll compressor with an oil recovery means according to an embodiment of the present invention forms a partition structure in the discharge chamber, to separate the foreign matter contained in the oil separated by the oil separator without installing a separate oil filter Can be separated

1 is a cross-sectional view showing oil recovery means of a conventional scroll compressor.
2 is an enlarged cross-sectional view showing an oil return flow path of a conventional scroll compressor in which a pressure reduction means is installed in the oil return flow path for oil pressure reduction.
3 is an exploded view of a scroll compressor equipped with oil recovery means according to an embodiment of the present invention.
4 is a cross-sectional view of the scroll compressor with oil recovery means according to an embodiment of the present invention.
FIG. 5 is a view illustrating a process in which oil flows in a collection space inside a discharge chamber of a scroll compressor equipped with an oil recovery unit according to an embodiment of the present invention.
FIG. 6 is a view illustrating a process in which the reduced pressure oil flows along the first groove and flows into the back pressure chamber along the oil return flow path.
FIG. 7 is a view illustrating a process in which oil flowing along the oil return flow path to the center housing is secondarily decompressed while flowing along the second groove and then discharged to the suction chamber.

Hereinafter, with reference to the drawings will be described the present invention in more detail. It should be noted that the same elements in the figures are represented by the same numerals wherever possible. In addition, detailed description of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

When a component is referred to as being connected or connected to another component, it is to be understood that although the component may be directly connected or connected to the other component, there may be other components in between. In addition, when a member is located "on" another member throughout this specification, this includes not only when one member is in contact with another member but also when another member exists between the two members.

In this application, “includes.” Or "have." And the like are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described in the specification, and one or more other features or numbers, steps, actions, components, parts, or It should be understood that they do not preclude the presence or possibility of adding these in advance.

Prior to the description of the present invention with reference to Figures 1 and 2 will be briefly described for the oil recovery means of the conventional scroll compressor.

The scroll compressor 10 includes a fixed scroll 20 having a fixed wrap 21 and a swing scroll 30 having a swing wrap 31 engaged with the fixed wrap 21, and the swing scroll 30. Is coupled to the rotary shaft 32 of the electric motor is to pivot on the fixed scroll 20 by the driving force of the electric motor.

As the pivoting scroll 30 pivots, the volume of the compression chamber 40 formed by the fixed wrap 21 of the fixed scroll 20 and the pivoting wrap 31 of the pivoting scroll 30 is changed, whereby Accordingly, the refrigerant introduced into the compression chamber 40 may be compressed.

However, as the scroll compressor 10 compresses the refrigerant using the mechanical contact between the fixed scroll 20 and the swing scroll 30 as described above, damage to some areas of the swing scroll 30 to the fixed scroll 20 occurs. Since there is a high possibility of problems such as leakage of refrigerant or oil, the lubrication between the driving unit or the turning scroll 30 and the fixed scroll 20 which drives the turning scroll 30 is very high in the scroll compressor 10. It is important.

In the scroll compressor 10, the use of refrigerant mixed with oil is a general method of lubricating the inside of the scroll compressor 10. According to the above method, when the refrigerant is discharged, the oil is also discharged together so that the oil in the compression chamber 40 may be removed. There was a problem that the amount of will gradually decrease,

Accordingly, in order to maintain the amount of oil in the compression chamber 40, a scroll compressor having oil recovery means for returning the oil discharged to the discharge chamber 50 into the compression chamber as shown in FIG. 1 has been proposed.

In the scroll compressor 10 of FIG. 1, an oil separator 51 is installed in the discharge chamber 50, and is separated by the oil separator 51 through an oil return flow path 60 communicating with the discharge chamber 50. Oil return means for returning oil to the back pressure chamber is provided, and in order to return the oil separated from the discharge chamber 50 to the back pressure chamber, since the pressure of oil is essential, the pressure reduction as shown in FIG. It is characterized by including the means 61.

However, in order to install the decompression means 61 in the oil return flow path 60, the length of the oil return flow path 60 is inevitably long, so in the scroll compressor 10 as described above, the oil return flow path 60 is lengthened. There was a problem that a separate oil conveying member for forming is essential, and when the oil conveying member, a separate decompression means, etc. are added, there is a problem that the internal structure of the scroll compressor is complicated and the productivity is inferior.

Accordingly, the present invention is to solve the conventional problems by providing a scroll compressor that can recover the oil without having to place a separate pressure reducing device in the oil return flow path, hereinafter with reference to Figures 3 to 4 of the present invention It will be described in detail with respect to the scroll compressor having the oil recovery means according to an embodiment.

3 is an exploded view of a scroll compressor with an oil recovery means according to an embodiment of the present invention, Figure 4 is a cross-sectional view of the scroll compressor with an oil recovery means according to an embodiment of the present invention. In this case, in the case of FIG. 3, some components are cut for convenience of description, but the actual components are not present in the cut form.

Scroll compressor equipped with oil recovery means according to an embodiment of the present invention comprises a center housing (100); A rear housing (110) forming a discharge chamber (120) through which the mixed fluid in which the cooling fluid and the oil are mixed is discharged; A fixed scroll (200) fixed in the center housing (100) and having a fixed wrap (210) formed thereon; A pivoting scroll (300) having a pivoting wrap (310) engaged with the fixed wrap (210); A back pressure chamber 500 for applying pressure to bring the pivoting scroll 300 into close contact with the fixed scroll 200; An oil separator (130) positioned in the discharge chamber (120) to separate oil from the discharged cooling fluid; And an oil return flow path 700 for returning the oil separated by the oil separator 130 into the back pressure chamber 500, and facing the outer circumferential surface of the rear housing 110 or the rear housing 110. A circular first groove 600 is formed on an outer circumferential surface of the center housing 100, and the oil separated by the oil separator 130 may be decompressed while flowing along the first groove 600. do.

Specifically, the center housing 100 of the present invention is formed in a cylindrical shape, the fixed housing 200 for fixing the fixed scroll 200 and the swinging scroll 300 therein and the mixed fluid mixed with the refrigerant and oil scroll It consists of a front housing 102 that forms a suction space that can temporarily stay when introduced into the compressor.

At this time, a driving means such as a stator for rotating the swing scroll, an electric motor composed of a vibrator, a rotating shaft, a bearing, and the like is disposed in the front housing 102, that is, in the suction space. Since the invention focuses on the recovery means, a detailed description of the driving means for driving the turning scroll will be omitted.

A fixed wrap 210 is formed on the fixed scroll 200 inside the center housing 100, and a pivot wrap 310 is formed on the pivot scroll 300 pivoting on the fixed scroll 200. As the swing wrap 310 of the swing scroll 300 and the fixed wrap 210 of the fixed scroll 200 are engaged, a compression chamber 400 is formed, and a mixed fluid (refrigerant and oil) compressed in the compression chamber 400. ) Is discharged in the direction of the rear housing 110 coupled with the center housing 100 through the discharge port formed in the fixed scroll 200.

In addition, as shown in FIG. 3, a closed space may be formed by the pivoting scroll 300 and the center housing 100. The closed space formed by the pivoting scroll 300 and the center housing 100 may be formed in the back pressure chamber 500. The back pressure chamber 500 is fixed scroll 200 to the swing scroll 300 to prevent the mixed fluid from leaking due to the space between the swing scroll 300 and the fixed scroll 200 during the refrigerant compression process. And a back pressure input hole 510 communicating with the back pressure chamber 500 and the compression chamber 400 in the back pressure chamber 500 to form a mixed fluid (cooling fluid and Oil) may flow in the direction of the compression chamber 400.

In addition, since the back pressure chamber 500 is in communication with the oil return flow path 700, the oil discharged from the compression chamber 400 through the oil return flow path 700 may be returned, which will be described later.

Next, a discharge chamber 120 into which the mixed fluid discharged from the compression chamber 400 flows is formed in the rear housing 110, and a discharge port is disposed in the discharge chamber 120 to discharge the chamber 120. Mixed fluid introduced into may be discharged to the outside of the scroll compressor (10).

However, since the mixed fluid discharged to the outside of the scroll compressor 10 may include oil, the oil separator 130 may be disposed in the discharge chamber 120 of the present invention to uniformly maintain the amount of oil in the compression chamber 400. Can be arranged.

The oil separator 130 is formed in a hollow tube shape, and one end portion is formed to communicate with the discharge port. The mixed fluid introduced into the discharge chamber 120 continuously collides with the oil separator 130 disposed in the discharge chamber 120. In this process, the oil contained in the mixed fluid is separated and the inside of the discharge chamber 120 is separated. The refrigerant is discharged to the outside through the discharge port.

The oil separated by the continuous collision of the mixed fluid and the oil separator is collected by the gravity in the collecting space 140 formed at the lower end of the discharge chamber 120, the oil collected in the collecting space 140 is the oil return flow path 700 After returning to the back pressure chamber 500 through the back pressure chamber 500, the back pressure chamber 500 may flow back into the compression chamber 400 through the back pressure input hole 510.

At this time, the process of the oil is separated, and returned to the back pressure chamber will be described in more detail with reference to FIGS.

FIG. 5 is a view illustrating a process in which oil flows in a collection space inside a discharge chamber of a scroll compressor equipped with an oil recovery unit according to an embodiment of the present invention, and FIG. 7 is a view illustrating a process of flowing into the back pressure chamber along the oil return flow path, and FIG. 7 illustrates a process in which oil flowing along the oil return flow path to the center housing is secondarily decompressed while flowing along the second groove, and then discharged to the suction chamber. The figure is shown.

First, referring to the collection space 140 in which the oil separated from the oil separator 130 is collected, the collection space 140 is located at the lower end of the discharge chamber 120 and the oil separated from the oil separator 130. The first space portion 141 is first collected by the gravity, and the first space portion 141 is formed adjacent to the second space portion 141 and includes a second space portion 142 is included. In addition, a communication hole 143 is formed between the first space 141 and the second space 142 close to the micropores communicating the two spaces, so that the oil collected in the first space 141 is formed. It may be moved to the second space 142.

Specifically, after the oil separated from the oil separator 130 is first collected in the first space portion 141 as shown in FIG. 5 (a), the second space portion 142 through the communication hole 143 of a fine size. The foreign matter contained in the oil is removed in the process of flowing), and the removed foreign matter is loaded on the lower end of the first space 141.

Here, the collecting space of the present invention may remove foreign matters from the separated oil through a communication hole 143 such as micropores without a separate oil filter, but according to an embodiment, an oil filter (not shown) is disposed in the communication hole. It is also possible to remove foreign substances more effectively.

The outer circumferential surface of the rear housing 110 is formed with a circular ('O' shaped) first groove 600, and at the lower end of the second space portion 142, the second space portion 142 and the first groove ( The discharge hole 144 communicating with the 600 is formed, and the oil from which the foreign matter introduced into the second space 142 is removed, as shown in FIGS. 5 and 6, flows back to the first groove 600.

The circular first groove 600 is an essential component in the scroll compressor 10 of the present invention and communicates with the oil return flow path 700, so that the oil flowing inside the first groove 600 is an oil return flow path. It may be returned to the back pressure chamber 500 through (600).

Here, it is obvious that the width and depth of the first groove 600 may vary depending on the purpose of use of the scroll compressor and the manufacturing environment.

In order for the oil separated from the discharge chamber 120 to be returned to the back pressure chamber 500, the pressure reduction of the oil is essential. The scroll compressor of the present invention forms a circular first groove 600, and in the oil separator 130. By forming a structure such that the separated oil flows along the first groove 600, the oil can be removed without placing additional decompression means in the oil return flow path, unlike the conventional scroll compressor (the scroll compressor shown in FIGS. 1 and 2). Can be reduced.

That is, in the scroll compressor of the present invention, since the oil may be reduced in pressure through the first groove 600 formed on the outer circumferential surface of the rear housing 110 without returning the oil conveying member or the decompression means, the scroll compressor 10 may be returned to the back pressure chamber 500. The internal structure can be simplified, and as a result, the mass productivity of the scroll compressor 10 can be improved.

Next, referring to the oil return flow path 700 in detail, the oil return flow path 700 is formed to communicate with the inside of the center housing 100, as shown in Figures 3 to 4, in particular the first groove It is formed to communicate between the (600) and the back pressure chamber 500, as shown in Figure 6 to flow along the first groove 600 is reduced pressure is returned to the back pressure chamber 500 direction.

In addition, the oil returned to the back pressure chamber 500 is introduced into the compression chamber 400 through the back pressure input hole 510 formed in the back pressure chamber 500, as described above, so that the turning scroll 300 and the fixed scroll 200 are rotated. I can lubricate it.

At this time, the mixed fluid between the rear housing 110 and the fixed housing 100 constituting the center housing 100 and between the fixed housing 101 and the front housing 102 is moved into the space inside the scroll compressor 10. In order to prevent leakage, a first gasket 800 may be disposed. At least one hole 810 is formed in the first gasket 800, and as the hole 810 is formed, the gasket 800 is formed. The oil flowing in the first groove 600 formed in the rear housing 110 may flow along the oil return flow path 700 in the direction of the center housing 100 (specifically, the back pressure chamber direction) regardless of the arrangement of the. It becomes possible.

In addition, the scroll compressor 10 of the present invention may form a circular second groove 610 on the outer circumferential surface of the center housing 100, more specifically, the fixed housing 101 as shown in FIG. 3. 610 serves to discharge the oil returned to the back pressure chamber 500 by being primarily decompressed in the first groove 600 to discharge the oil to the suction chamber.

If the oil returned to the back pressure chamber 500 through the oil return flow path 700 is not sufficiently reduced by the first groove 600, it may be returned to the back pressure chamber 500. It may not be discharged to the suction chamber in this case, in this case, the scroll compressor 10 of the present invention through the second groove 610 formed on the outer peripheral surface of the center housing 100 facing the front housing 102 (pressure back chamber ( The oil returned to 500 is further reduced in pressure so that the oil separated by the oil separator 130 can finally be discharged to the suction chamber.

Specifically, as shown in FIG. 7A, the oil in the oil return flow path 700 is returned to the back pressure chamber 500 along the back pressure chamber communication flow path 710. An oil discharge flow path 720 communicating with the back pressure chamber 500 and the second groove 610 formed on the outer circumferential surface of the center housing 100 is formed so that oil in the back pressure chamber 500 passes through the oil discharge flow path 720. It may flow into the second groove 610.

The oil introduced into the second groove 610 is sufficiently reduced in pressure to be discharged to the suction chamber while rotating along the second groove 610, and the suction chamber at the end of the second groove 610 as shown in FIG. Discharged.

In addition, a second gasket 820 may be disposed between the center housing 100 and the front housing 102 to prevent leakage of oil in the process of flowing in the second groove 610. A hole 830 is formed at a position corresponding to the end of the second groove 610 of the second gasket 820, so that the oil may be sucked at the end of the second groove 610 even if the second gasket 820 is additionally disposed. It does not affect the discharge to the.

In summary, the scroll compressor according to an embodiment of the present invention is configured to communicate with a collecting space formed in the discharge chamber, a circular first groove formed on the outer circumferential surface of the rear housing, a second circular groove formed on the outer circumferential surface of the center housing, and a back pressure chamber. With the oil return flow path, the oil discharged from the compression chamber can be separated and returned to the back pressure chamber with a simple structure without installing a separate decompression means in the oil return flow path as in the conventional scroll compressor, and the oil returned into the back pressure chamber Since it can be supplied to the compression chamber through the back pressure input hole, there is an advantage that can maintain the total amount of oil in the compression chamber.

While the above has been shown and described with respect to preferred embodiments and applications of the present invention, the present invention is not limited to the specific embodiments and applications described above, the invention without departing from the spirit of the invention claimed in the claims Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

Also, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: scroll compressor
100: center housing
101: fixed housing
102: front housing
110: rear housing
120: discharge chamber
130: oil separator
140: capture space
141: first space part
142: second space part
143: communication hole
144: discharge hole
200: fixed scroll
210: fixed wrap
300: turning scroll
310: turning wrap
400: compression chamber
500: back pressure chamber
510: back pressure input hole
600: first groove
610: the second groove
700: oil return euro
710: back pressure chamber communication flow path
720: oil discharge flow path
800: first gasket
810, 830: hall
820: second gasket

Claims (10)

Center housing;
A rear housing forming a discharge chamber through which the mixed fluid mixed with the cooling fluid and the oil is discharged;
A fixed scroll fixed to the center housing and having a fixed wrap;
A turning scroll having a turning wrap engaged with the fixed wrap;
A back pressure chamber for applying pressure to bring the swing scroll into close contact with the fixed scroll direction;
An oil separator located in the discharge chamber and separating oil from the discharged cooling fluid; And
And an oil return flow path for returning the oil separated by the oil separator into the back pressure chamber.
Oil recovery, characterized in that the circular first groove is formed on the outer peripheral surface of the rear housing or the outer peripheral surface of the center housing facing the rear housing, the oil separated by the oil separator is reduced while flowing along the first groove Scroll compressor provided with means.
The method of claim 1,
The oil return flow path,
Scroll compressor provided with oil recovery means characterized in that it is formed to communicate with the inside of the center housing.
The method of claim 2,
The oil return flow path,
Scroll compressor provided with oil recovery means characterized in that it is formed to communicate between the first groove and the back pressure chamber.
The method of claim 1,
And a collecting space for collecting oil separated by the oil separator at a lower end of the discharge chamber.
The method of claim 4, wherein
The collection space,
A first space in which oil separated in the oil separator is collected;
A second space portion formed adjacent to the first space portion and collecting oil;
A communication hole communicating with the first space part and the second space part; And
A discharge hole communicating with the second space portion and the first groove;
Scroll compressor with oil recovery means characterized in that it comprises a.
The method according to claim 5,
Foreign matter contained in the oil collected in the first space portion is loaded on the lower end of the first space portion by gravity,
The oil having separated oil is moved to the second space through the communication hole, the scroll compressor with oil recovery means, characterized in that flowing into the first groove through the discharge hole.
The method of claim 5,
Scroll compressor provided with oil recovery means, characterized in that the oil filter is disposed in the communication hole.
The method of claim 1,
And a first gasket disposed between the rear housing and the center housing.
The method of claim 8,
At least one hole is formed in the first gasket,
And oil flowing in the first groove of the rear housing through the hole may flow in the center housing direction.
The method of claim 1,
The outer peripheral surface of the center housing is formed with a circular second groove,
And the oil in the back pressure chamber is decompressed while flowing along the second groove.

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