KR20200026413A - Oil refueling structure of rotary compressor for vehicle mounting - Google Patents

Abstract

The present invention provides an oil feeding structure of a rotary compressor for vehicle mounting which increases oil circulation by the centrifugal force of a rotary shaft. The rotary compressor includes: a housing which has a cylindrical shape having a space formed therein whose one side is opened, and is mounted on the engine of a vehicle while horizontally arranging the longitudinal direction thereof; a rotary shaft arranged at the center in the housing by a plurality of bearings to be rotated about a horizontal direction; an electrically-driven mechanism unit arranged in the space in the housing, and rotating the rotary shaft arranged at the center in the housing by selectively applied power; and a compression unit connected to one end of the rotary shaft to compress an inflow refrigerant by torque of the rotary shaft and separate the high-pressure refrigerant and oil. An oil passage allowing oil to eccentrically flow therethrough in the horizontal longitudinal direction is formed at the center of the rotary shaft. Oil outlets connected from the oil passage at right angles are formed in response to corresponding points where the bearings and bushes of the rotary shaft are positioned. A pressure difference is created between the compression unit and the oil passage by the centrifugal force generated by rotation of the rotary shaft to allow oil separated by the compression unit to flow into the oil passage. While the oil flowing into the oil passage flows along the oil passage, the oil is supplied to each bearing and bush through each oil outlet.

Description

Oil refueling structure of rotary compressor for vehicle mounting

The present invention relates to a rotary compressor mounted on a vehicle, and more particularly, since the oil circulation using the pressure difference between the oil passage and the discharge chamber is made, the internal structure of the compressor is simple and the inside of the rotary shaft rotates in the horizontal direction. The oil passage formed at the center is eccentrically formed along the longitudinal direction, and an oil outlet hole connected at right angles to the oil passage is formed, so that the oil circulation structure of the rotary compressor for vehicle mounting increases oil circulation by the centrifugal force of the rotating shaft. It is about.

A general rotary compressor includes a hermetic container having a predetermined internal volume and forming an outer case of the compressor, a stator fixed to an inner circumference of the hermetic container, and an electric motor part including a rotor installed inside the hermetic container. And a rotating shaft having an annular rod-shaped concentric portion pressed into the inner diameter of the rotor and an eccentric portion eccentrically formed on one side thereof, and being coupled by a bolt together with a main bearing and a sub bearing while surrounding the eccentric portion of the rotating shaft. A cylinder forming a compression portion in the cylinder, a rolling piston inserted into the eccentric portion of the rotary shaft to rotate and rotate while contacting the inner diameter of the cylinder, and sliding contact with the outer circumferential surface of the rolling piston to separate the inside of the cylinder into a high pressure portion and a low pressure portion, Compressor section consisting of moving vanes.

Mounted vertically as described above, the rotary compressor compresses and discharges the refrigerant to a predetermined degree of compression.

In addition, the conventional rotary compressor has an oil passage formed at the center of the rotating shaft, and the blade inside the rotating shaft rotates during the operation of the compressor, and forms a structure for lubricating and cooling the oil stored in the lower portion of the compressor through the holes in the oil passage.

However, the compressor for the automobile has a problem in that the oil pumping through the blade is impossible because the shaft center axis rotates horizontally.

Prior art can be found in Korean Patent Publication No. 10-2018-0041795 (2018.04.25).

According to the present invention, since the oil circulation using the pressure difference between the oil passage and the discharge chamber is made without circulating the oil through the blade as in the conventional art, the compressor internal structure is simple and the inside of the rotating shaft rotates in the horizontal direction. The oil passage formed at the center is eccentrically formed along the longitudinal direction, and an oil outlet hole connected at right angles to the oil passage is formed, so that the oil circulation structure of the rotary compressor for vehicle mounting increases oil circulation by the centrifugal force of the rotating shaft. To provide that purpose.

The oil lubricating structure of the vehicle-mounted rotary compressor according to the present invention has a cylindrical shape in which a space is formed and one side is opened, and a housing mounted to the vehicle with a horizontal direction in the longitudinal direction, and a longitudinal direction in the center of the housing. A rotating shaft provided with a plurality of bearings to be rotatable, a power mechanism unit provided in an inner space of the housing and selectively rotating the rotating shaft provided at the inner center of the housing with an applied electric power, and connected to one end of the rotating shaft. Compression unit for flowing out the compressed refrigerant containing the compressed compressed refrigerant or oil, while compressing the refrigerant flowing into the rotational force of the rotary shaft, coupled to the open side of the housing, the low pressure refrigerant and oil mixed state A suction chamber accommodated in the air discharge chamber, a discharge chamber accommodated in a mixture of high-pressure refrigerant and oil, and the discharge chamber A rotary compressor including a top cap provided in the unit, the top cap including an oil separator for separating the high-pressure refrigerant and oil contained in the discharge chamber by centrifugal inlet, the oil eccentric in the circumferential direction from the center along the longitudinal direction of the rotary shaft By forming this flowing oil passage, the oil separated from the refrigerant flows into the oil passage by the centrifugal force generated by the rotation of the rotary shaft, and the oil introduced into the oil passage flows along the rotary shaft.

In this case, the oil passage according to the present invention forms oil outlet holes communicating in the circumferential direction, respectively, corresponding to the corresponding points at which the bearing and the bush are located in the rotary shaft, respectively, and the centrifugal force generated by the rotation of the rotary shaft, Oil flowing along the oil passage is supplied through each oil outlet.

And the round bar shape according to the present invention, the other side is pressed into the rotor inner diameter of the power mechanism portion, the opposite side end is formed extending in the outer circumferential direction, the eccentric piece and the eccentric piece forming an eccentricity with the center of the rotating shaft, It is preferable that one side is formed with a concentric piece concentric with the rotating shaft.

In addition, the compression unit according to the present invention is in the form of a disk in which the outer periphery is in contact with the inner circumferential surface of the housing, disposed between the power mechanism portion and the eccentric piece of the rotary shaft, the rotary shaft is accommodated inside, A main frame supporting the rotating shaft with a main bearing, a cylinder in which the other side and one side of the main frame are interviewed with each other, and an eccentric piece of the rotating shaft is accommodated in an internal compression space; A metal bush inserted and a linear reciprocating motion along a slot formed on one side of the compression space of the cylinder, and a vane separating the compression space of the cylinder into a high pressure portion and a low pressure portion extends from one side in the circumferential direction, and the rotation shaft Rolling eccentric piece is inserted together with the metal bush to rotate and revolve while contacting the inner diameter of the cylinder A stone and a concentric piece of the rotating shaft are inserted into a coupling groove formed at one side center so that the other side and one side of the cylinder are interviewed with each other, and an oil communication hole communicating with the oil passage of the rotating shaft is formed in the coupling groove. And a valve plate having a discharge valve for discharging the compressed refrigerant including the compressed refrigerant or the oil in the compressed space of the cylinder on the other side.

And part of the outer circumferential surface of the eccentric piece of the rotary shaft according to the invention is formed flat, forming an eccentric side oil receiving space between the outer circumferential surface of the eccentric piece and the inner circumferential surface of the metal bush, a portion of the outer circumferential surface of the concentric piece of the rotary shaft is flat It is formed, forming a concentric side oil receiving space between the outer circumferential surface of the concentric piece and the inner circumferential surface of the coupling groove, the rotary shaft is formed in each of the oil outflow hole communicating with the eccentric side oil receiving space and the concentric side oil receiving space, respectively With the centrifugal force generated by the rotation of the rotating shaft, the oil flowing along the oil passage flows through the oil outlet holes to the eccentric oil receiving space and the concentric oil receiving space.

In this case, the eccentric oil receiving space according to the present invention is preferably formed larger than the concentric oil receiving space.

In addition, the oil separator according to the present invention is formed with a circular separation space separated from each other by a centrifugal to flow the refrigerant and oil introduced into the annular, the inlet is formed in one side the refrigerant and oil is introduced, A coolant outlet hole is formed at the center of the separation space to discharge the refrigerant separated from the oil, and an oil discharge hole communicating with the oil communication hole of the valve plate is formed at one side of the coolant outlet hole formed at the center of the separation space.

Vehicle-mounted rotary compressor according to an embodiment of the present invention has the following effects.

First, since the oil circulation using the pressure difference between the oil passage and the discharge chamber is made without circulating the oil through the blade as in the related art, the internal structure of the compressor is simplified, thereby reducing the manufacturing cost.

Second, while the oil passage formed inside the rotating shaft rotating in the horizontal direction eccentrically along the longitudinal direction with respect to the center, the oil outflow hole connected to the oil passage is formed at right angles, the oil circulation by the centrifugal force of the rotating shaft This has an increasing effect.

Third, the oil is supplied through the oil outflow hole by the rotation of the rotary shaft formed toward the end of the rotary shaft, the eccentric piece and the rolling piston where the friction force is concentrated, thereby improving the lubricity.

1 is an exemplary view showing a circulation state of a refrigerant and oil of a vehicle-mounted rotary compressor according to an embodiment of the present invention.
2 is an exemplary view showing a cylinder of a vehicle-mounted rotary compressor according to an embodiment of the present invention.
3 is an exemplary view showing a valve plate of a vehicle-mounted rotary compressor according to an embodiment of the present invention.
Figure 4 is an exemplary view showing a top cap of a vehicle-mounted rotary compressor according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the configuration shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all of the technical idea of the present invention, these are equivalent to replaceable at the time of the present application It should be understood that there may be variations.

According to the present invention, since the oil circulation using the pressure difference between the oil passage and the discharge chamber is made without circulating the oil through the blade as in the conventional art, the compressor internal structure is simple and the inside of the rotating shaft rotates in the horizontal direction. The oil passage formed at the center is eccentrically formed along the longitudinal direction, and oil outlet holes connected to the oil passage at right angles are formed, so that oil circulation of the vehicle-mounted rotary compressor is increased by the centrifugal force of the rotating shaft. Regarding the structure, it will be described in more detail with reference to the drawings.

1 to 4, a vehicle-mounted rotary compressor according to an embodiment of the present invention includes a housing 100, a rotating shaft 110, a power mechanism unit 120, and a compression unit 200. One side of the 100 is opened to form an opening, the inside of which is formed in a cylindrical shape having a length in the horizontal direction, the horizontal direction is mounted to the engine of the vehicle.

In this case, the top cap 300 is coupled to an open one side of the housing 100 to seal the interior space of the housing 100, and may be fixed to the engine of the vehicle by a bolt on the outside of the housing 100. The bolt connection part is formed so that the bolt penetrates.

Here, the inside of the top cap 300 coupled to the open side of the housing 100 is partitioned into a plurality of chambers by a diaphragm, the suction chamber 310 accommodated in a mixture of low-pressure refrigerant and oil and The discharge chamber 320 is divided into a discharge chamber 320 accommodated in a state where a mixture of a high pressure refrigerant and oil is mixed, and an oil separator 330 is provided inside the discharge chamber 320. The oil separator 330 may include the discharge chamber ( Centrifugal inflow of the high pressure refrigerant and oil contained in 320 to separate from each other.

Looking at the oil separator 330 in more detail, the oil separator 330 has an annular separation space 331 formed therein, and an inlet 332 through which a refrigerant and oil are introduced is formed at one side thereof. A refrigerant outlet hole 333 through which the refrigerant flows is formed at the center of the separation space 331, and an oil discharge hole connected to the oil passage 113 of the rotating shaft 110 is formed at one side of the refrigerant outlet hole 333 formed at the center thereof. 334 is formed.

Therefore, the oil separated from the refrigerant by the oil separator 330 flows into the oil passage 113 of the rotating shaft 110 through the oil discharge hole 334.

In addition, an inlet pipe communicating with an inner space is formed on an outer surface of the housing 100 so that refrigerant and oil may flow into or out of the inner space of the housing 100, and the top cap 300 has a top cap 300. Outflow pipes in communication with the chamber of each are formed.

In addition, the housing 100 is provided with a rotating shaft 110. The rotating shaft 110 is provided with a plurality of bearings so as to be rotatable in the longitudinal direction in the center of the housing 100.

At this time, the rotating shaft 110 is an annular bar shape, the other side is pressed into the inner diameter of the rotor 122 of the electric mechanism unit 120, the opposite side of the eccentric piece forming an eccentricity with the center of the rotating shaft 110 ( 112 is formed, and one side of the eccentric piece 112 is formed with a concentric piece 111 concentric with the rotation shaft 110.

In addition, an oil passage 113 is formed in the center of the rotation shaft 110 so as to be eccentric from the center, and the oil passage 113 is eccentrically in the circumferential direction from the center of the rotation shaft 110 in the longitudinal direction of the rotation shaft 110. Is formed along, when the rotating shaft 110 is rotated, the centrifugal force is generated in the outer circumferential direction of the rotating shaft 110.

In addition, the oil outflow hole 114 is formed to communicate in the circumferential direction in the oil passage 113 corresponding to the corresponding point where the bearing and the bush in the rotary shaft 110, wherein the oil outflow hole 114 Is not limited to any of the points, but is preferably formed corresponding to the point where lubrication is required.

For example, as shown in FIG. 1, the oil outflow hole 114 has first to fourth oil outflow holes 114 formed on the basis of one side of the rotation shaft 110. The 114 is formed at the point of the concentric piece 111 of the rotation shaft 110, so that oil can be supplied between the concentric piece 111 and the bush of the rotation shaft 110, the second oil outflow hole 114 ) Is formed at the point of the eccentric piece 112 of the rotary shaft 110, so that the oil is supplied between the eccentric piece 112 and the bush of the rotary shaft 110, the third oil outflow hole 114 The main bearing 202 of the rotary shaft 110 is formed at a corresponding point, so that the oil can be supplied to the main bearing 202, the fourth oil outlet hole 114 of the rotary shaft 110 The sub-bearing 203 may be formed at a corresponding point at which the sub-bearing 203 is positioned so that oil may be supplied to the sub-bearing 203.

Therefore, the oil flowing along the oil passage 113 is easy to flow by the centrifugal force generated by the rotation of the rotary shaft 110, through the oil outflow hole 114 perpendicular to the oil passage 113. Oil refueling is easy.

In addition, an electric mechanism unit 120 that provides a rotational force so that the rotating shaft 110 can rotate in the housing 100 is accommodated in an internal space of the housing 100, and the power mechanism unit 120 includes the housing ( A stator 121 provided on an outer circumferential surface of the inner space of the internal space 100 and a rotor 122 disposed inside the stator 121 and rotating in correspondence with the stator 121 by a power source applied from the outside are included. do.

Therefore, the power mechanism 120 is provided in the inner space of the housing 100, and optionally rotating the rotor 122 with the power applied from the outside, the rotating shaft 120 is disposed in the inner center of the housing 100 This interlocked rotation, the centrifugal force is generated in the oil passage 113 formed eccentrically from the center of the rotary shaft 110 by the rotation of the rotary shaft 110, the pressure is generated by the centrifugal force to the oil passage 113 In addition to the smooth flow of the oil flowing along the oil passage through the oil outlet hole 114 in communication with the oil passage 113 in the circumferential direction, the oil supply to each bearing and bush is made.

And one side end of the rotary shaft 110 is connected to the compression unit 200, the compression unit 200 while circulating the inside of the housing 100 by the rotational force of the rotary shaft 110 while compressing the incoming refrigerant, Separate high pressure refrigerant and oil.

At this time, the compression unit 200 is located in the opening of the housing 100. Looking at the compression unit 200 in more detail, the compression unit 200 is the main frame 201, the cylinder 210, the metal Bush 230, rolling piston 220, valve plate 240 is included.

The main frame 201 is in the form of a disk in which the outer periphery is in contact with the inner circumferential surface of the housing 100, disposed between the power mechanism 120 and the eccentric piece 112 of the rotary shaft 110, the rotary shaft ( The rotating shaft 110 is rotatably supported by the main bearing 202 accommodated therein so that the 110 is located at the inner center of the housing 100.

In this case, the main bearing 202 and the opposite sub bearing 203 are provided at the other end of the rotating shaft 110 to rotatably support the other side of the rotating shaft 110 in the housing 100.

Therefore, by the above configuration, the rotation shaft 110 can be rotated without oscillating in the longitudinal direction in the housing 100.

The cylinder 210 has the other side and one side of the main frame 201 in contact with each other, and accommodates the eccentric piece 114 of the rotation shaft 110 in the compression space P formed in the inner space in the inner space. do.

Here, looking at the cylinder 210 according to an embodiment of the present invention in more detail, the cylinder 210 is divided into a plurality of spaces so that the low-pressure refrigerant and oil can be circulated along the outer circumference sawtooth Compressed space that forms a wheel shape, the center of the compression shaft in which the rolling piston 220 for compressing the refrigerant in conjunction with the rotation of the eccentric piece 112 is accommodated while the eccentric piece 112 formed on one side of the rotary shaft 110 is accommodated Is formed, and extends outward from the compression space is formed a slot for accommodating the vanes 221 of the rolling piston 220.

And the eccentric piece 112 of the rotary shaft 110 is located in the compression space of the cylinder 210, the annular metal bush 230 is fitted, the eccentric of the rotary shaft 110, the metal bush 230 is fitted The rolling piston 220 is coupled to the piece 112.

At this time, the metal bush 230 reduces the friction between the eccentric piece 112 and the rolling piston 220 so that a smooth piston movement occurs.

In addition, the rolling piston 220 is inserted into the eccentric piece 112 of the rotating shaft 110 to contact the inner diameter of the cylinder 210 to compress and discharge the refrigerant introduced by rotating and rotating, the rolling piston 220 The vane 221 is extended from one side of the), linearly reciprocating along the slot formed on one side of the internal compression space of the cylinder 210, and separates the cylinder 210 compression space into a high pressure portion and a low pressure portion.

In addition, the valve plate 240 is inserted into the coupling groove 241 formed at the center of one side of the concentric piece 111 of the rotating shaft 110, and the other side and one side of the cylinder 210 are interviewed with each other. An oil communication hole 243 communicating with the oil passage 113 of the rotating shaft 110 is formed in the coupling groove 241, and a compressed refrigerant or oil is contained in the compression space P of the cylinder 210. The discharge valve 242 for discharging the refrigerant is provided on the other side.

In addition, a portion of the outer circumferential surface of the eccentric piece 112 of the rotary shaft 110 according to an embodiment of the present invention is formed flat, the eccentric side oil between the outer circumferential surface of the eccentric piece 111 and the inner circumferential surface of the metal bush 230 A receiving space 251 is formed, and a portion of the outer circumferential surface of the concentric piece 111 of the rotating shaft 110 is formed flat, so that the concentric oil receiving space between the outer circumferential surface of the concentric piece 111 and the inner circumferential surface of the coupling groove ( 252 is formed, and the rotation shaft 110 is formed with an oil outlet hole 114 communicating with the eccentric oil receiving space 251 and the concentric oil receiving space 252, respectively, of the rotary shaft 110 Due to the centrifugal force generated by the rotation, the oil flowing along the oil passage 113 flows through the oil outlet holes 114 to the eccentric oil receiving space 251 and the concentric oil receiving space 252. Oil is supplied.

Therefore, the low pressure refrigerant and oil introduced into the housing 100 from the outside of the present invention according to the above configuration flows along the electric mechanism part 120 and the suction chamber 310 to cool the inside of the compressor, and the rotary shaft The low pressure refrigerant and oil flowing along the housing 100 are introduced into the compression unit 200 by the rotation of the 110, and the high pressure refrigerant and oil are discharged through the compression unit 200 while compressing the refrigerant to a high pressure. And the high pressure refrigerant and the oil contained in the discharge chamber 320 are separated from each other in the oil separator 330, and the separated high pressure refrigerant flows out of the compressor, and the separated oil is separated into the oil separator 330. After the oil passage 113 is introduced through the oil discharge hole 334 of the bearing and the eccentric side oil receiving space 251 through the oil outlet hole 114 connected at right angles to the oil passage 113. Oil into the oil receiving space (252) It is fed into the bush.

At this time, the oil is sent to the oil passage 113 using the pressure difference generated by the centrifugal force generated by the centrifugal force in the oil passage 113 formed eccentrically at the center of the rotating shaft 110 and the pressure caused by the centrifugal force. The introduced oil flows along the oil passage 113 and is supplied to each bearing and the eccentric oil receiving space 251 and the concentric oil receiving space 252 through each oil outlet hole 114.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

100: housing 110: axis of rotation
111: concentric 112: eccentric
113: oil passage 114: oil outlet
120: electric mechanism unit 122: rotor
121: stator 200: compression unit
201: mainframe 202: main bearing
203: sub-bearing 210: cylinder
220: rolling piston 221: vane
230: metal bush 240: valve plate
241: coupling groove 243: oil communication hole
242: discharge valve 251: eccentric side oil receiving space
252: concentric oil receiving space 310: suction chamber
320: discharge chamber 330: oil separator
331: separation space 332: inlet
333: refrigerant outlet hole 334: oil discharge hole

Claims (7)

A housing having a space formed therein and having a tubular shape open at one side thereof, the housing being mounted to the vehicle in a horizontal direction;
A rotating shaft provided in the housing center to be provided with a plurality of bearings rotatable in a longitudinal direction;
An electric mechanism unit provided in an inner space of the housing and configured to rotate a rotating shaft provided at an inner center of the housing with an selectively applied electric power;
A compression unit connected to one end of the rotating shaft to compress the refrigerant introduced by the rotational force of the rotating shaft, and outflow the compressed compressed refrigerant containing the compressed refrigerant or oil;
A suction chamber coupled to an open side of the housing and accommodated in a state where a low pressure refrigerant and oil are mixed, a discharge chamber accommodated in a state where a high pressure refrigerant and oil are mixed, and provided inside the discharge chamber, A rotary compressor including a top cap including an oil separator for separating high pressure refrigerant and oil contained in the discharge chamber from each other,
An oil passage in which eccentric oil flows from the center to the circumferential direction along the longitudinal direction of the rotary shaft is formed, so that the oil separated from the refrigerant flows into the oil passage through the oil separator, and is generated by the rotation of the rotary shaft. The oil lubrication structure of the vehicle-mounted rotary compressor in which the oil introduced into the oil passage flows along the rotating shaft by centrifugal force.
The method according to claim 1,
The oil passage
The oil flow holes are formed to communicate with each other in the circumferential direction corresponding to the corresponding points where the bearing and the bush are located in the rotating shaft, and the oil flowing along the oil passage is centrifugal force generated by the rotation of the rotating shaft. Oil lubrication structure of the vehicle-mounted rotary compressor supplied through the oil bleed hole.
The method according to claim 2,
The rotation axis is
In the shape of a round bar, the other side is press-fitted into the rotor inner diameter of the power mechanism, the opposite side end is formed extending in the outer circumferential direction, the eccentric piece eccentric with the center of the rotation axis, and the one side of the eccentric piece the rotation shaft Oil lubrication structure for a vehicle-mounted rotary compressor having a concentric piece concentric with the other.
The method according to claim 3,
The compression unit
An outer periphery is in the form of a disk in contact with the inner circumferential surface of the housing, disposed between the transmission mechanism and the eccentric piece of the rotating shaft, the main shaft for supporting the rotating shaft with a main bearing accommodated therein so that the rotating shaft is located in the center of the housing A frame;
A cylinder in which the other side and one side of the main frame are interviewed with each other, and an eccentric piece of the rotating shaft is accommodated in an internal compression space;
A metal bush in which the eccentric piece of the rotating shaft is inserted into the annular shape;
A linear reciprocating motion along a slot formed on one side of the compression space of the cylinder, and a vane separating the compression space of the cylinder into a high pressure portion and a low pressure portion extends from one side in the circumferential direction, and the eccentric piece of the rotating shaft is the metal bush. And a rolling piston inserted into and contacted with the inner diameter of the cylinder to rotate and rotate.
The concentric piece of the rotating shaft is inserted into the coupling groove formed at the center of one side, and the other side and one side of the cylinder are interviewed with each other, and an oil communication hole communicating with the oil passage of the rotary shaft is formed in the coupling groove, An oil lubrication structure for a vehicle-mounted rotary compressor including a valve plate having a discharge valve for discharging a compressed refrigerant including oil compressed in a compression space or a compressed refrigerant containing oil on the other side.
The method according to claim 3,
A portion of the outer circumferential surface of the eccentric piece of the rotary shaft is formed flat, forming an eccentric side oil receiving space between the outer circumferential surface of the eccentric piece and the inner circumferential surface of the metal bush, and a portion of the outer circumferential surface of the concentric pieces of the rotary shaft is formed flat, the concentric Concentric oil receiving space is formed between the outer peripheral surface of the convenience and the inner peripheral surface of the coupling groove, and the oil discharge hole communicating with the eccentric oil receiving space and the concentric oil receiving space is formed in the rotary shaft, respectively, by the rotation of the rotary shaft Oil lubrication structure of the vehicle-mounted rotary compressor in which the oil flowing along the oil passage flows to the eccentric side oil receiving space and the concentric side oil receiving space by the generated centrifugal force.
The method according to claim 5,
The eccentric oil receiving space is an oil lubrication structure of a vehicle-mounted rotary compressor is formed larger than the concentric oil receiving space.
The method according to claim 3,
The oil separator
Separation space is formed in the annular separation space separated from each other by a centrifugal to flow the refrigerant and oil introduced into the annular, an inlet for the refrigerant and oil inlet is formed on one side, the refrigerant separated from the oil in the center of the separation space The oil lubrication structure of the on-vehicle rotary compressor, wherein a coolant outlet hole is formed, and an oil discharge hole communicating with the oil communication hole of the valve plate is formed at one side of the coolant outlet hole formed at the center of the separation space.

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