KR20190038388A - Compressor - Google Patents

Abstract

Even when used as a chamber of a compressor, the center of a gasket enhances the strength of the gasket as a stable throttle passage is formed. To achieve the purpose, a plurality of slits (130a, 130b, 130c, 130d) are arranged along the outer edge of a gasket (130) with mutual gap parts (130m, 130n, 130p) placed therebetween. A housing part (162) has a cross section facing the gasket (130), and moreover, includes grooves (162a, 162b, 162c) formed opposite the gap parts (130m, 130n, 130p) with respect to the cross section. In regard to a state in which a housing part (120) and the housing part (162) are combined with the gasket (130) placed therebetween, as the slits are connected through the grooves, a part of a channel, through which lubricant stored in an oil storage part (41) flows to a compressing instrument (160), is formed. The slits comprise throttles of the channel.

Description

COMPRESSOR

The present invention relates to a compressor.

Japanese Unexamined Patent Application Publication No. 2006-57459 (Patent Document 1) discloses a configuration of a compressor in which an oil supply passage is formed in a gasket. In the compressor described in Patent Document 1, the central portion of the gasket is flat, and a hole serving as a flow passage (oil passage) is formed in the center portion.

Japanese Laid-Open Patent Publication No. 2006-57459

Most of the central portion of the gasket is opened and a chamber having a pressure level such as a suction pressure region, a discharge pressure region, or an intermediate pressure region of the compressor is formed in the opening. In this case, if a series of flow passages are formed around the opening, it is difficult to secure the strength of the gasket while forming a stable throttle passage.

It is an object of the present invention to provide a compressor capable of securing the strength of a gasket while forming a stable throttle passage even when the inside of the opening of the central portion of the gasket is used as a chamber of the compressor .

In the compressor according to the present invention, a plurality of housing portions including the first housing portion and the second housing portion are coupled to each other, thereby constituting the housing construction body.

A gasket is interposed between the first housing part and the second housing part. The housing constructing body has a compression mechanism for compressing the refrigerant sucked from the outside and a low oil portion for storing the lubricating oil separated from the discharged refrigerant. The gasket has a plurality of slits arranged along the peripheral edge of the gasket with a gap portion therebetween. The first housing portion has a cross-section (end face) opposite to the gasket, and a groove is formed at a position opposite to the gap portion in the cross-section. In the state where the first housing part and the second housing part are coupled to each other with the gasket interposed therebetween, a plurality of slits communicate with each other through the grooves, thereby constituting a part of the flow path in which the lubricating oil in the low- .

The plurality of slits serve as a throttle of the flow path.

Since the plurality of slits constituting a part of the flow path are formed so as to be arranged along the peripheral edge of the gasket with the gap portion therebetween, the throttle is formed by the slit, and the strength of the gasket is ensured by the gap portion can do. Further, by forming a plurality of slits along the peripheral edge of the gasket, the length of each slit can be made longer, and a stable throttle passage can be formed, as compared with a case where a hole as a flow path is formed in the central portion of the gasket.

In one aspect of the present invention, a compression chamber is partitioned inside the compression mechanism. A suction chamber for sucking the refrigerant compressed by the compression mechanism unit from the outside is defined in the housing structure. The flow passage is in communication with the suction chamber or the compression chamber.

Since the flow path is in communication with the suction chamber or the compression chamber, the oil can be decompressed while ensuring the supply of oil, so that the power loss of the compressor can be reduced.

In one aspect of the present invention, the compression mechanism section includes a fixed scroll and a movable scroll constituting a compression chamber together with the fixed scroll.

Stable compression performance can be obtained by reducing pressure of oil while supplying an appropriate amount of oil to the compression chamber constituted by the fixed scroll and the movable scroll.

In one aspect of the present invention, a back pressure chamber for pressing the movable scroll toward the fixed scroll so as to elastically support the movable scroll is formed inside the housing structure body on the side opposite to the fixed scroll side of the movable scroll. The flow path communicates with the back pressure chamber.

Since the flow path is in communication with the back pressure chamber, the oil can be reduced while supplying oil to the back pressure chamber, so that the power loss of the compressor can be reduced.

In one aspect of the present invention, the compressor further includes a rotation shaft rotatably supported inside the housing structure. The compression mechanism includes a rotor and a plurality of vanes. The rotor is connected to a rotating shaft, and a plurality of vane grooves are formed on the outer periphery. A plurality of vanes come and go out from a plurality of vane grooves. A back pressure chamber is defined by a plurality of vane grooves and a plurality of vanes. The rotor is housed in the cylinder. At both ends of the cylinder, a side plate is formed. In the interior of the housing construction body, a discharge chamber for discharging the refrigerant compressed by the compression mechanism section to the outside is defined at one end side of the side plate. And the oil storage portion is located below the discharge chamber. An oil separator is fixed to the discharge chamber side of the side plate. An oil separation chamber is formed inside the oil separator. Between the side plate and the oil separator, an intermediate pressure chamber communicating with the low oil pressure portion and communicating with the back pressure chamber is formed. The gasket is disposed between the side plate and the oil separator. The flow path communicates the low oil part and the intermediate pressure chamber.

Since the oil passage communicates the low-oil portion and the intermediate-pressure chamber, the oil can be reduced while supplying oil to the intermediate-pressure chamber, so that the power loss of the compressor can be reduced.

In an aspect of the present invention, a filter portion is formed at the inlet of the flow path.

Since the filter portion is formed at the inlet of the flow path, it is possible to prevent foreign matter from entering into the flow path and obstructing the flow path.

In one aspect of the present invention, the filter portion is formed of a slit on the comb teeth formed on the gasket.

Since the filter portion is formed of the slits on the comb teeth formed on the gasket, it is not necessary to add a member for forming the filter portion, and the slits constituting the flow path and the slits constituting the filter portion can be formed by the same process, The filter portion can be formed.

In one aspect of the present invention, the passage cross-sectional area of the groove is larger than the passage cross-sectional area of the slit in which the groove is opposed.

Since the cross-sectional area of the groove is greater than the cross-sectional area of the passage of the slit, which corresponds to the groove, the slit can function as a throttle of the flow passage.

According to the present invention, it is possible to secure the strength of the gasket while forming a stable throttle passage.

1 is a sectional view showing a configuration of a compressor according to Embodiment 1 of the present invention.
2 is a sectional view taken along the line II-II in Fig.
3 is a sectional view taken along line III-III in Fig.
4 is a sectional view showing a configuration of a compressor according to a second embodiment of the present invention.
5 is a sectional view taken along the line VV-line in Fig.
6 is a sectional view taken along line VI-VI of Fig.
7 is a cross-sectional view showing a configuration of a compressor according to a third embodiment of the present invention.
8 is a sectional view taken along the line VIII-VIII in Fig. 7; Fig.
Fig. 9 is a sectional view taken along line IX-IX in Fig. 8; Fig.
10 is a sectional view showing a configuration of a compressor according to a fourth embodiment of the present invention.
11 is a sectional view taken along the line XI-XI in Fig. 10.
12 is a sectional view taken along the line XII-XII in Fig.
13 is a cross-sectional view showing a configuration of a compressor according to Embodiment 5 of the present invention.
Fig. 14 is a sectional view taken along line XIV-XIV in Fig. 13; Fig.
15 is a sectional view taken along the line XV-XV in Fig. 14.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a compressor according to each embodiment of the present invention will be described with reference to the drawings. In the following description, the same or corresponding portions in the drawings are denoted by the same reference numerals, and description thereof will not be repeated.

In the following description of the embodiments, the scroll type compressor and the vane type compressor are described. However, the compressor type is not limited to the scroll type and the vane type, and other types of compressors such as a quadrature type compressor may be used.

(Embodiment 1)

1 is a sectional view showing a configuration of a compressor according to Embodiment 1 of the present invention. Fig. 2 is a sectional view taken along the line II-II in Fig. 1. Fig. 3 is a sectional view taken along line III-III in Fig.

As shown in Figs. 1 to 3, the compressor 100 according to the first embodiment of the present invention is a scroll type electric compressor. The compressor (100) has a plurality of housing parts. In this embodiment, the motor housing 110, the rear housing 120, the fixed block 140, the movable scroll 161, and the fixed scroll 162 are included as a plurality of housing portions. The outer periphery of the gasket 130 is sandwiched between the motor housing 110 and the rear housing 120 and the inner periphery of the gasket 130 is sandwiched between the rear housing 120 and the fixed scroll 162 .

In the plurality of housing parts, the corresponding housing parts are coupled to each other, thereby constituting the housing construction body 100h. The housing component 100h has therein a compression mechanism 160 for compressing the refrigerant sucked from the outside.

Hereinafter, each configuration of the compressor 100 will be described in detail.

The rear housing 120 is fastened to the rear end side of the motor housing 110 by bolts 190. Each of the motor housing 110 and the rear housing 120 is made of an aluminum alloy, and has a bottomed, conventional shape. The motor housing 110 is formed with a suction port 111 communicating with the outside and a portion communicated with the suction port 111 in the motor housing 110 is partitioned as a suction chamber 10 as a suction pressure region . An electric motor part 170 is accommodated in the motor housing 110. In the outer peripheral portion of the rear housing 120, a plurality of through holes 128 for inserting and passing the bolts are formed.

1, the compression mechanism unit 160 and the electric motor unit 170 are arranged in the axial direction of the rotary shaft 150. As shown in Fig. The electric motor section 170 includes a stator 171 and a rotor 172.

The rotor 172 is connected to the rotating shaft 150. The rotary shaft 150 is supported on the bottom wall of the motor housing 110 and the fixed block 140. An eccentric pin 150p is provided on an end side of the rotary shaft 150 located on the inner side of the fixed block 140. [ The eccentric pin 150p is fitted to the bush 151. The bush 151 is fitted with an inner peripheral portion of the bearing 152 fixed to the movable scroll 161.

The compression mechanism 160 includes a movable scroll 161, a fixed scroll 162, a rotary shaft 150, an eccentric pin 150p, a bush 151 and a bearing 152. [ A compression chamber (20) is defined between the movable scroll (161) and the fixed scroll (162).

A back pressure chamber 50 for supporting the movable scroll 161 toward the fixed scroll 162 is formed on the opposite side of the fixed scroll 162 side of the movable scroll 161 in the housing structure 100h . The back pressure chamber (50) is partitioned by the fixed block (140) and the movable scroll (161). The pressure in the back pressure chamber 50 is equal to the difference between the flow rate of the refrigerant gas leaking from the compression chamber 20 to the back pressure chamber 50 and the flow rate of the refrigerant gas discharged from the back pressure chamber 50 And provides a back pressure for elastically supporting the movable scroll 161 to the fixed scroll 162 side. The movable scroll (161) is connected to the bush (151).

A spring plate 240 is disposed between the fixed scroll 162 and the fixed block 140. The spring plate 240 is a metal thin plate having an annular outer shape and resiliently supports the movable scroll 161 toward the fixed scroll 162 side.

1, the discharge chamber 30 is partitioned between the rear housing 120 and the fixed scroll 162. As shown in Fig. The discharge chamber 30 communicates with the compression chamber 20 through a discharge port 162h formed in the fixed scroll 162. [ The discharge port 162h is opened and closed by the valve unit 31. [ In the rear housing 120, a discharge opening 124 opened to the outside is formed. The discharge port 124 is in communication with the external refrigerant circuit of the compressor 100.

An oil separation chamber 40 communicating with the discharge chamber 30 and having an oil separation cylinder 180 is formed in the rear housing 120. The discharge chamber (30) discharges the refrigerant gas compressed by the compression mechanism (160) to the oil separation chamber (40). The oil separation chamber (40) separates the lubricating oil from the refrigerant gas discharged from the discharge chamber (30). The refrigerant gas discharged from the discharge chamber 30 is partitioned by the partitioning portion 125 between the discharge chamber 30 and the oil separation chamber 40 and communicated with the communication hole 126 formed in the partition portion 125 To the oil separation chamber (40).

When the refrigerant gas turns on the outer peripheral surface of the oil separation cylinder 180 in the oil separation chamber 40, the lubricating oil is centrifuged. The refrigerant gas from which the lubricating oil has been separated in the oil separation chamber (40) passes through the inside of the oil separation cylinder (180) and is discharged to the outside from the discharge port (124).

The lubricating oil separated from the refrigerant gas in the oil separation chamber (40) is stored in the first oil storage portion (41) below the oil separation chamber (40) in the vertical direction. The rear housing 120 is formed with a communication passage 127 for communicating the first oil reservoir 41 with an inlet 130ae of a gasket 130 described later.

A second low-melting-point portion 42 is defined on the outer periphery of the discharge chamber 30. The second oil reservoir 42 communicates with the first oil reservoir 41 through the communication passage 61 to be described later and communicates with the suction chamber 10 by the oil return passage 164, Respectively.

As shown in Figs. 1 and 2, the gasket 130 is arranged so as to surround the periphery of the discharge chamber 30. As shown in Fig. The gasket 130 is a seal member whose surface of a thin metal plate is covered with rubber. The gasket 130 is opposed to the end surface 162t of the fixed scroll 162 on the side of the rear housing 120. As described above, the gasket 130 is sandwiched between the rear housing 120 and the fixed scroll 162. The discharge chamber 30 is located within the opening of the central portion of the gasket 130 and the opening in the center of the gasket 130 is the discharge pressure region of the compressor 100.

As shown in Fig. 2, the gasket 130 is provided with a plurality of slits arranged along the peripheral edge of the gasket 130 with a gap portion therebetween. The first slit 130a, the second slit 130b, the third slit 130c and the fourth slit 130d are formed as a plurality of slits in the gasket 130 in this embodiment. At one end of the first slit 130a, an inlet 130ae having a substantially circular shape is formed. At the end of the fourth slit 130d, an outlet 130de having a substantially circular shape is formed. From the outlet 130de, the lubricating oil flows out to the second low-melting portion 42 through the gap formed by the thickness of the gasket 130. [

The gasket 130 is provided with a first gap portion 130m between the first slit 130a and the second slit 130b and a second gap portion 130n between the second slit 130b and the third slit 130c. , And a third gap portion 130p is formed between the third slit 130c and the fourth slit 130d. The gap portion is a portion interposed between the slits in the gasket 130.

As shown in Fig. 2 and Fig. 3, a groove is formed at a position opposite to the gap portion in the end face 162t of the fixed scroll 162. [ In the present embodiment, the first groove 162a and the second gap portion 130n are formed at positions opposed to the first gap portion 130m at a position opposed to the first gap portion 162a and the second gap portion 130n at the end surface 162t of the fixed scroll 162 And a third groove 162c is formed at a position facing the second groove 162b and the third gap portion 130p. Further, the length of each groove is longer than the length of the corresponding gap portion.

The first slit 130a, the second slit 130b, the third slit 130c, and the second slit 130b are formed in a state where the rear housing 120 and the fixed scroll 162 are coupled to each other with the gasket 130 interposed therebetween. And the fourth slit 130d are communicated with each other through the first groove 162a, the second groove 162b and the third groove 162c so that the lubricant oil L1 in the first oil storing portion 41 flows 61). The flow path 61 communicates the first rinse portion 41 with the second rinse portion 42 and the second rinse portion 42 communicates with the suction chamber 10. The cross-sectional area of each groove is larger than the cross-sectional area of the passage of the slit with which the groove is opposed, so that each slit becomes a throttle of the flow path 61. The flow passageway 61 is formed around approximately half of the gasket 130.

The groove is formed in the end face 162t of the fixed scroll 162 but the position where the groove is formed is not limited to the end face 162t of the fixed scroll 162, Or both of the end surface of the rear housing 120 and the end surface 162t of the fixed scroll 162. The end surface 162t of the fixed scroll 162 and the end surface 162t of the fixed scroll 162 .

The rotational force generated by the electric motor unit 170 is transmitted to the movable scroll 161 through the rotary shaft 150 and the bush 151. In the compressor 100, When the movable scroll (161) revolves with respect to the fixed scroll (162), the compression mechanism (160) operates to compress the refrigerant gas. The refrigerant compressed in the compression chamber (20) is pushed into the discharge chamber (30) by pushing the valve unit (31). The refrigerant gas flowing into the discharge chamber (30) passes through the communication hole (126) and flows into the oil separation chamber (40). The refrigerant gas from which the lubricating oil has been separated in the oil separation chamber (40) passes through the oil separation cylinder (180) and is discharged to the outside from the discharge port (124).

The lubricating oil separated from the refrigerant gas in the oil separation chamber 40 and stored in the first oil storage portion 41 passes through the communication passage 127 and flows into the communication passage 61 from the inlet port 130ae of the gasket 130 ≪ / RTI > The lubricating oil L1 is reduced in pressure when passing through the flow passage 61 and flows into the suction chamber 10 from the outlet 130de through the second low- The lubricating oil L1 flows into the compression chamber 20 from the suction chamber 10 together with the refrigerant gas and lubricates the sliding portion of the compression mechanism portion 160. [

In the compressor 100 according to the present embodiment, since the plurality of slits constituting a part of the flow path 61 are formed so as to be arranged along the peripheral edge of the gasket 130 with the gap portion therebetween, It is possible to secure the strength of the gasket 130 by the gap portion while forming the throttle by the slit. By forming a plurality of slits along the periphery of the gasket 130, the length of each slit can be made longer than in the case of forming a hole as a flow passage in the central portion of the gasket 130, Can be secured.

Since the communication passage 61 communicates with the suction chamber 10 through the second low-pressure portion 42, the lubricating oil can be depressurized while securing the supply of the lubricating oil to the suction chamber 10, Can be reduced.

By forming the groove in the fixed scroll 162, it is not necessary to add a member for forming the flow path 61, and the groove can be formed easily.

(Embodiment 2)

Hereinafter, a compressor according to a second embodiment of the present invention will be described with reference to the drawings. In the compressor according to the second embodiment of the present invention, the arrangement of the gasket constituting the flow path is different from that of the compressor 100 according to the first embodiment. Therefore, the compressor 100 according to the first embodiment has the same structure The description will not be repeated.

4 is a cross-sectional view showing the configuration of a compressor according to Embodiment 2 of the present invention. 5 is a sectional view taken along the line V-V in Fig. 4. 6 is a sectional view taken along line VI-VI of Fig. 5, only the gasket 230 and the fixing block 140 are shown.

As shown in Figs. 4 to 6, the compressor 200 according to the second embodiment of the present invention is a scroll type electric compressor. The compressor (200) has a plurality of housing parts. In this embodiment, the gasket 230 is sandwiched between the fixed scroll 162 and the fixed block 140, and the spring plate 240 is disposed between the fixed scroll 162 and the gasket 230 have.

A communication passage 227 is formed in the rear housing 120, the fixed scroll 162 and the spring plate 240 to communicate the first oil reservoir 41 and the inflow port 230ae of the gasket 230 described later .

As shown in Figs. 4 and 6, the gasket 230 is opposed to the end surface 140t of the fixed block 140 on the fixed scroll 162 side. 5, the back pressure chamber 50 is located within the opening of the central portion of the gasket 230 and the inside of the opening of the central portion of the gasket 230 is the intermediate pressure region of the compressor 200. [

As shown in Fig. 5, the gasket 230 is provided with a plurality of slits arranged along the peripheral edge of the gasket 230 with a gap portion therebetween. In this embodiment, the gasket 230 is provided with a first slit 230a, a second slit 230b, a third slit 230c and a fourth slit 230d as a plurality of slits. At one end of the first slit 230a, an inlet 230ae having a substantially circular shape is formed. At the end of the fourth slit 230d, there is formed an outlet 230d that is substantially circular in shape. The outlet 230de is formed at a position communicating with the suction chamber 10. [

The gasket 230 is provided with a first gap portion 230m between the first slit 230a and the second slit 230b and a second gap portion 230n between the second slit 230b and the third slit 230c. , And a third gap portion 230p is formed between the third slit 230c and the fourth slit 230d.

As shown in Figs. 5 and 6, a groove is formed at a position opposite to the gap portion in the end surface 140t of the fixed block 140. [ The first groove 140a and the second gap 230n are formed at positions opposed to the first gap portion 230m in the end face 140t of the fixed block 140 at positions opposed to the first groove 140a and the second gap portion 230n And a third groove 140c is formed at a position facing the second groove 140b and the third gap portion 230p. Further, the length of each groove is longer than the length of the corresponding gap portion. The cross-sectional area of the passage of each groove is larger than the cross-sectional area of the passage of the slit with which the groove is opposed, so that each slit becomes a throttle of the flow passage 62.

In this state, the fixed scroll 162 and the fixed block 140 are coupled to each other with the spring plate 240 and the gasket 230 interposed therebetween. The first slit 230a, the second slit 230b, The third slit 230c and the fourth slit 230d are communicated with each other through the first groove 140a, the second groove 140b and the third groove 140c so that the lubricant A flow path 62 through which L2 flows is formed. The communication passage 62 communicates the first rinse portion 41 with the second rinse portion 42 and the second rinse portion 42 communicates with the suction chamber 10. The flow passages 62 are formed around approximately half of the gasket 230.

The lubricating oil separated from the refrigerant gas in the oil separation chamber 40 and stored in the first oil storage portion 41 passes through the communication passage 227 and flows into the communication passage 62 from the inlet port 230ae of the gasket 230 ≪ / RTI >

The lubricating oil L2 is reduced in pressure when passing through the flow passage 62 and flows into the second low oil part 42 from the outlet 230de. The lubricating oil L2 flows into the compression chamber 20 together with the refrigerant gas after flowing into the suction chamber 10 from the second low-pressure portion 42 to lubricate the sliding portion of the compression mechanism portion 160. [

In the compressor 200 according to the present embodiment, since the plurality of slits constituting a part of the flow path 62 are formed so as to be arranged along the peripheral edge of the gasket 230 with the gap portion therebetween, The strength of the gasket 230 can be secured by the gap portion while forming the throttle by the slit. By forming a plurality of slits along the periphery of the gasket 230, the length of each slit can be made longer than in the case of forming the hole as the flow passage in the central portion of the gasket 230, Can be secured.

Since the flow path 62 is communicated with the suction chamber 10 through the second low-pressure portion 42, the lubricating oil can be decompressed while securing the supply of the lubricating oil to the suction chamber 10, Can be reduced.

By forming the groove in the fixing block 140, it is not necessary to add a member for forming the flow path 62, and the groove can be formed easily. The groove may be formed at the end face of the spring plate 240 or at the end face 140t of the fixing block 140. In this embodiment, And the end surface of the spring plate 240 may be provided.

(Embodiment 3)

Hereinafter, a compressor according to a third embodiment of the present invention will be described with reference to the drawings. The compressor according to the third embodiment of the present invention is different from the compressor 100 according to the first embodiment mainly in the arrangement of gaskets constituting the flow path, The description will not be repeated.

7 is a cross-sectional view showing a configuration of a compressor according to Embodiment 3 of the present invention. 8 is a cross-sectional view taken along the line VIII-VIII in Fig. 7. Fig. 9 is a sectional view taken along line IX-IX in Fig. 8; Fig.

As shown in Figs. 7 to 9, the compressor 300 according to the third embodiment of the present invention is a scroll type electric compressor. The compressor (300) has a plurality of housing parts. In this embodiment, the motor housing 310, the rear housing 320, the fixed block 140, the movable scroll 361, and the fixed scroll 362 are included as a plurality of housing parts. The outer periphery of the gasket 330 is sandwiched between the motor housing 310 and the rear housing 320 and the inner periphery of the gasket 330 is sandwiched between the rear housing 320 and the fixed scroll 362 .

In the plurality of housing parts, the corresponding housing parts are coupled to each other, thereby constituting the housing constituent body 300h. The housing construction body 300h accommodates a compression mechanism 360 for compressing the refrigerant sucked from the outside. The compression mechanism 360 includes a movable scroll 361, a fixed scroll 362, a rotary shaft 150, an eccentric pin 150p, a bush 151 and a bearing 152. The housing construction body 300h has therein a suction chamber 10 for sucking refrigerant compressed by the compression mechanism 360 from the outside.

At the bottom of the oil separation chamber (40), a first oil storage portion (41) for storing the lubricating oil separated in the oil separation chamber (40) is formed. At the bottom of the oil separation chamber 40, a connection passage 321 communicating with an inflow port 330ae to be described later is formed.

As shown in Fig. 8, in the present embodiment, the second rinse portion 42 is partitioned on the outer periphery of the discharge chamber 30. As shown in Fig. The second oil reservoir 42 is in communication with the back pressure chamber 50 through an extraction oil passage 365 passing through the fixed scroll 362 in the front-rear direction. In the middle of the oil passage 365, a control valve 390 is disposed. The opening degree of the oil passage 365 is adjusted by the control valve 390 in accordance with the difference between the pressure in the back pressure chamber 50 and the pressure in the second oil passage 42. The control valve 390 is constituted by a ball valve 391 and a coil spring 392 and operates to keep the difference between the pressure in the back pressure chamber 50 and the pressure in the second oil reservoir 42 constant. The elastic supporting force for resiliently supporting the movable scroll 361 based on the pressure of the back pressure chamber 50 toward the fixed scroll 362 is kept substantially constant by the action of the regulating valve 390. [ The lubricating oil in the back pressure chamber 50 flows out to the second low oil part 42 through the oil passage 365 and is stored in the second low oil part 42.

7 and 8, the fixed scroll 362 is provided with an oil return passage 364 communicating with the bottom of the second oil reservoir 42 and the suction chamber 10, and the second low- (42) is a suction pressure region. The fixed scroll 362 is formed with a communication passage 366 that communicates with the back pressure chamber 50 and communicates with an outlet port 330ce to be described later.

The lubricating oil stored in the second low oiled portion 42 passes through the oil return passage 364 and is introduced into the suction chamber 10 and is taken into the compression chamber 20 together with the refrigerant gas, Lubricate the area.

As shown in Figs. 7 and 8, the gasket 330 is disposed so as to surround the periphery of the second rid- ing portion 42. As shown in Fig. The inner peripheral portion of the gasket 330 is opposed to the end surface 362t of the fixed scroll 362 on the rear housing 320 side. As described above, the inner peripheral portion of the gasket 330 is sandwiched between the rear housing 320 and the fixed scroll 362. The discharge chamber 30 and the second oil reservoir 42 are located in the opening of the central portion of the gasket 330 and the opening in the central portion of the gasket 330 is the discharge pressure region and the suction pressure region of the compressor 300 have.

As shown in Fig. 8, the gasket 330 is provided with a plurality of slits arranged along the peripheral edge of the gasket 330 with a gap portion therebetween. The first slit 330a, the second slit 330b, and the third slit 330c are formed as a plurality of slits in the gasket 330 in this embodiment. At one end of the first slit 330a, there is formed an inflow port 330ae having a substantially circular shape. At the end of the third slit 330c, there is formed an outflow port 330ce having a substantially circular shape. The inlet port 330ae is formed in a position communicating with the connection passage 321. [ The outlet port 330ce is formed at a position communicating with the communication passage 366. [ Therefore, the third slit 330c has a portion along the circumferential direction of the gasket 330 and a portion along the radial direction of the gasket 330.

The gasket 330 is provided with a first gap portion 330m between the first slit 330a and the second slit 330b and a second gap portion 330n between the second slit 330b and the third slit 330c. Is formed.

As shown in Figs. 8 and 9, a groove is formed at a position opposite to the gap portion in the end face 362t of the fixed scroll 362. [ In the present embodiment, the first groove 362a and the second gap portion 330n are provided at positions opposed to the first gap portion 330m in the end surface 362t of the fixed scroll 362 at the positions facing the first gap portion 362a and the second gap portion 330n A second groove 362b is formed. Further, the length of each groove is longer than the length of the corresponding gap portion. The cross-sectional area of each groove is larger than the cross-sectional area of the passage of the slit with which the groove is opposed, so that each slit becomes a throttle of the flow path 63.

The first slit 330a, the second slit 330b, and the third slit 330c are formed in a state where the rear housing 320 and the fixed scroll 362 are coupled to each other with the gasket 330 interposed therebetween. The lubricating oil L3 of the first low oil part 41 in the oil separation chamber 40 flows through the first groove 362a and the second groove 362b.

The flow path 63 communicates with the communication path 321 and the communication path 366. Therefore, the oil separation chamber 40 and the back pressure chamber 50 are communicated with each other through the flow path 63. The flow path 63 is formed to extend approximately one quarter of the gasket 330. The differential pressure between the pressure in the oil separation chamber 40 and the pressure in the back pressure chamber 50 is smaller than the pressure difference between the pressure in the oil separation chamber 40 and the pressure in the suction chamber 10, The length of the flow path 63 serving as the throttle passage between the seals 50 may be shorter than the length of the flow path serving as the throttle passage between the oil separation chamber 40 and the suction chamber 10. [

The groove is not limited to the end surface 362t of the fixed scroll 362 but may be formed on the end surface 362t of the fixed scroll 362. In this embodiment, Or both of the end surface of the rear housing 320 and the end surface 362t of the fixed scroll 362 may be either the end surface of the rear housing 320 facing the end surface 362t of the fixed scroll 362, .

The lubricating oil separated from the refrigerant gas in the oil separation chamber 40 flows through the connection passage 321 and flows into the flow passage 63 from the inlet port 330ae of the gasket 330. The lubricating oil L3 is depressurized when passing through the flow path 63 and flows into the back pressure chamber 50 through the communication path 366 from the outlet port 330ce. The lubricating oil L3 lubricates the rotating shaft 150, the eccentric pin 150p, the bush 151 and the bearing 152 in the back pressure chamber 50. [

In the compressor 300 according to the present embodiment, since the plurality of slits constituting a part of the flow path 63 are formed so as to be arranged along the peripheral edge of the gasket 330 with the gap portion therebetween, The strength of the gasket 330 can be secured by the gap portion while forming the throttle by the slit. Further, by forming a plurality of slits along the peripheral edge of the gasket 330, the length of each slit can be made longer than in the case of forming the hole as the flow passage in the central portion of the gasket 330, Can be secured.

In addition, since the flow path 63 is in communication with the back pressure chamber 50, the lubricating oil can be depressurized while securing the supply of lubricating oil to the back pressure chamber 50, thereby reducing the power loss of the compressor.

By forming the groove in the fixed scroll 362, it is not necessary to add a member for forming the flow path 63, and the groove can be formed easily.

As in Embodiment 2, a spring plate and a gasket are disposed between the fixed scroll 362 and the fixed block 140, a plurality of slits formed in the gasket, and a plurality of slits formed in the fixed block 140 The grooves may communicate with each other to constitute a flow passage. In this case, the rear housing 320, the fixed scroll 362, and the spring plate are formed with a communication passage for communicating the oil separation chamber 40 with the inlet of the flow passage.

(Fourth Embodiment)

Hereinafter, a compressor according to a fourth embodiment of the present invention will be described with reference to the drawings. The compressor according to the fourth embodiment of the present invention differs from the compressor 100 according to the first embodiment mainly in that it does not include the electric motor part. Therefore, the same structure as the compressor 100 according to the first embodiment is explained .

10 is a sectional view showing a configuration of a compressor according to Embodiment 4 of the present invention. 11 is a sectional view taken along the line XI-XI in Fig. 10. Fig. 12 is a sectional view taken along line XII-XII in Fig. 11; Fig.

10 to 12, a compressor 400 according to Embodiment 4 of the present invention is a scroll type compressor using a vehicle engine as a drive source, and transmits a rotational driving force from a vehicle engine via a belt to a rotating shaft 150 do. The compressor (400) has a plurality of housing parts. The rear housing 420, the movable scroll 461, and the fixed scroll 462 as the plurality of housing parts. A gasket 430 is sandwiched between the rear housing 420 and the fixed scroll 462.

In the plurality of housing parts, the corresponding housing parts are coupled to each other to constitute the housing construction body 400h. The housing construction body 400h has therein a compression mechanism 460 for compressing the refrigerant sucked from the outside. The compression mechanism 460 includes a movable scroll 461, a fixed scroll 462, a rotary shaft 150, an eccentric pin 150p, a bush 151 and a bearing 152. [

The fixed scroll (462) is provided with an oil supply hole (462h) penetrating in the front-rear direction. The front end of the oil supply hole 462h opens to the sliding portion between the movable scroll 461 and the fixed scroll 462. [

The oil separation chamber (40) is in communication with the first oil storage portion (41) by the connection passage (421). The connection passage 421 is opened at the bottom of the oil separation chamber 40. A filter portion 490 is formed on the bottom of the first rinse portion 41. In the present embodiment, the filter portion 490 has a cylindrical outer shape and a mesh structure. The filter portion 490 filters the lubricating oil introduced from the outer peripheral side by the mesh structure and discharges the lubricating oil from one end of the hollow portion on the inner peripheral side.

As shown in Figs. 10 and 11, the gasket 430 is arranged so as to surround the periphery of the discharge chamber 30 and the first rugged portion 41. As shown in Fig. The inner peripheral portion of the gasket 430 faces the end surface 462t of the fixed scroll 462 on the rear housing 420 side. As described above, the inner peripheral portion of the gasket 430 is sandwiched between the rear housing 420 and the fixed scroll 462. The discharge chamber 30 and the first rugged portion 41 are located in the opening of the central portion of the gasket 430 and the discharge opening of the compressor 400 is located in the opening of the central portion of the gasket 430.

As shown in Fig. 11, the gasket 430 is provided with a plurality of slits arranged along the peripheral edge of the gasket 430 with a gap portion therebetween. In this embodiment, the gasket 430 is provided with a first slit 430a, a second slit 430b and a third slit 430c as a plurality of slits. At one end of the first slit 430a, there is formed an inflow port 430ae having a substantially circular shape. At the end of the third slit 430c, an outlet 430c that is substantially circular in shape is formed. The inlet port 430ae is formed at a position communicating with the hollow portion on the inner peripheral side of the filter portion 490. [ The outlet 430c is formed at a position communicating with the oil supply hole 462h.

The gasket 430 is provided with a first gap portion 430m between the first slit 430a and the second slit 430b and a second gap portion 430n between the second slit 430b and the third slit 430c. Is formed.

As shown in Figs. 11 and 12, grooves are formed at positions opposed to the gap portions in the end surface 462t of the fixed scroll 462. As shown in Fig. The first groove 462x is formed at a position facing the first gap portion 430m and the first groove 462x is formed at a position opposite to the second gap portion 430n in the end surface 462t of the fixed scroll 462 in this embodiment A second groove 462y is formed. Further, the length of each groove is longer than the length of the corresponding gap portion. The cross-sectional area of the passage of each groove is larger than the cross-sectional area of the passage of the slit with which the groove is opposed, so that each slit becomes a throttle of the flow passage 64.

The first slit 430a, the second slit 430b, and the third slit 430c are formed in a state where the rear housing 420 and the fixed scroll 462 are coupled to each other with the gasket 430 interposed therebetween. Communicates with each other through the first groove 462x and the second groove 462y to constitute a flow path 64 through which the lubricating oil L4 that has passed through the filter portion 490 flows.

The flow path 64 communicates the filter portion 490 and the oil supply hole 462h. Therefore, the sliding portions of the movable scroll 461 and the fixed scroll 462 are communicated with the first rinsing portion 41 through the flow path 64. [ The flow passageway 64 is formed around approximately half of the gasket 430.

The grooves are not limited to the end surface 462t of the fixed scroll 462 but the grooves may be formed on the end surface 462t of the fixed scroll 462. In this embodiment, Or may be either the end surface of the rear housing 420 facing the end surface 462t of the fixed scroll 462 or both of the end surface of the rear housing 420 and the end surface 462t of the fixed scroll 462 .

The lubricating oil filtered in the filter portion 490 flows into the flow passage 64 from the inlet port 430ae of the gasket 430. [ The lubricating oil L4 is decompressed when passing through the flow passage 64 and reaches the sliding portion of the movable scroll 461 and the fixed scroll 462 from the outlet port 430ce through the oil supply hole 462h.

In the compressor 400 according to the present embodiment, since the plurality of slits constituting a part of the flow path 64 are formed so as to be arranged along the peripheral edge of the gasket 430 with the gap portion therebetween, The gap portion can secure the strength of the gasket 430 while forming the throttle by the slit. By forming a plurality of slits along the periphery of the gasket 430, the length of each slit can be made longer than in the case of forming a hole as a flow passage in the central portion of the gasket 430, Can be secured.

Since the flow path 64 is communicated with the sliding portions of the movable scroll 461 and the fixed scroll 462, the lubricating oil can be decompressed while securing the supply of the lubricating oil to the sliding portion, Can be reduced.

By forming the groove in the fixed scroll 462, it is not necessary to add a member for forming the flow path 64, and the groove can be formed easily.

(Embodiment 5)

Hereinafter, a compressor according to a fifth embodiment of the present invention will be described with reference to the drawings. The compressor according to Embodiment 5 of the present invention differs from the compressor 100 according to Embodiment 1 mainly in that the compressor is a vane type compressor. Therefore, the same structure as that of the compressor 100 related to Embodiment 1 is repeatedly described I never do that.

13 is a cross-sectional view showing a configuration of a compressor according to Embodiment 5 of the present invention. 14 is a cross-sectional view taken along the line XIV-XIV in Fig. 15 is a sectional view taken along the line XV-XV in Fig.

As shown in Figs. 13 to 15, a compressor 500 according to Embodiment 5 of the present invention is a vane-type motor-driven compressor. The compressor (500) has a plurality of housing parts. The present embodiment includes a cover body 591 of a motor housing 510, a rear housing 520, a cylinder body 540, a rear side plate 580 and an oil separator 590 as a plurality of housing parts .

A gasket 530 is disposed between the rear side plate 580 and the cover body 591 of the oil separator 590.

In the plurality of housing parts, the corresponding housing parts are coupled to each other to constitute the housing construction body 500h. The compressor 500 further includes a rotation shaft 550 rotatably supported inside the housing structure 500h.

The housing construction body 500h has therein a compression mechanism portion 560 for compressing the refrigerant sucked from the outside. The compression mechanism portion 560 includes a rotor 561 and a plurality of vanes 562. A compression chamber 20 is partitioned inside the compression mechanism portion 560 and the compression mechanism portion 560 compresses the refrigerant by rotating the rotation shaft 550. [

A discharge chamber 30 for discharging the refrigerant compressed by the compression mechanism 560 to the outside is defined in the rear end side of the rear side plate 580 inside the housing structure body 500h. And the first rinsing portion 41 is positioned below the discharge chamber 30. [ An oil separator 590 is fixed to the discharge chamber 30 side of the rear side plate 580. An oil separation chamber 40 is formed in the oil separator 590. An intermediate pressure chamber 60 is formed between the rear side plate 580 and the oil separator 590 so as to communicate with the first oil storage portion 41 and to communicate with the back pressure chamber 50.

Hereinafter, each configuration of the compressor 500 will be described in detail.

A suction port 511 is formed in the motor housing 510. A portion of the motor housing 510 which communicates with the suction port 511 is partitioned into a suction chamber 10 having a suction pressure region.

And the rear housing 520 is connected to the rear end side of the motor housing 510. In the rear housing 520, a discharge port 521 communicating with the discharge chamber 30 is formed.

The cylinder body 540 includes a front side plate 542 integrally formed with a cylinder 541 and a rear side plate 580 is formed at an open end of the cylinder 541. The cylinder chamber 12 is partitioned by the cylinder 541, the front side plate 542, and the rear side plate 580. A compression chamber (20) is defined in the cylinder chamber (12).

An annular groove 545 is formed around the rotating shaft 550 at the rear end side in the axial direction of the rotating shaft 550 in the front side plate 542.

The cylinder body 540 is formed with a suction passage 546 opened to the suction chamber 10 and a suction port 547 opened to the cylinder chamber 12. The suction chamber 10 and the cylinder chamber 12 are communicated with each other by the suction passage 546 and the suction port 547. [ The cylinder body 540 is provided with a notch 549 for partitioning the discharge space 32 together with the inner peripheral surface of the rear housing 520 and a discharge port 548 for communicating the discharge space 32 and the compression chamber 20 Respectively. In the discharge space 32, a valve unit 31 for opening and closing the discharge port 548 is disposed.

An annular groove 583 is formed in the rear side plate 580 around the rotating shaft 550 and communicates with an intermediate pressure chamber 60 to be described later by a through hole 584. In the rear side plate 580, a communication hole 582 communicating with the discharge space 32 is formed.

13, the compression mechanism portion 560 and the electric motor portion 570 are arranged in the axial direction of the rotating shaft 550. As shown in Fig. The electric motor section 570 includes a motor rotor 571 and a stator 572. The motor rotor 571 is connected to the rotating shaft 550. The rotary shaft 550 is supported on the bottom wall of the motor housing 510, the front side plate 542, and the rear side plate 580.

The rotor 561 is integrally rotatably connected to the rotating shaft 550 and is accommodated in the cylinder chamber 12. A plurality of vane grooves 561m are formed on the outer circumference of the rotor 561. The vanes 562 mounted on each of the plurality of vane grooves 561m come and go out of the vane groove 561m with the rotation of the rotor 561. [

The compression chamber 20 is partitioned by a rotor 561 and a plurality of vanes 562. The back pressure chamber 50 is partitioned by a plurality of vane grooves 561m and a plurality of vanes 562. [ The back pressure chamber 50 communicates with the annular groove 583 of the rear side plate 580.

The oil separator 590 is composed of a cover body 591 and an oil separator 592. The cover body 591 is fixed to the rear side plate 580 by bolts. A gasket 530 is sandwiched between the rear side plate 580 and the cover body 591.

The intermediate pressure chamber 60 is partitioned by the rear side plate 580, the cover body 591, the gasket 530, and the rotary shaft 550. The intermediate pressure chamber 60 is in communication with the back pressure chamber 50 through the through hole 584 and the annular groove 583 of the rear side plate 580.

An oil separation chamber 40 communicating with the discharge chamber 30 and having an oil separation cylinder 592 is formed in the cover body 591. An oil separation chamber 592 is fixed to the opening 593 at one end of the oil separation chamber 40. A discharge port 595 is formed at the other end of the oil separation chamber 40 Respectively.

The cover body 591 is formed with a communication hole 594 communicating with the communication hole 582 of the rear side plate 580. [ The communication hole 582 and the communication hole 594 constitute a discharge passage communicating the discharge space 32 and the oil separation chamber 40.

13 and 14, the gasket 530 faces the end face 591t of the cover body 591 on the rear side plate 580 side. As described above, the gasket 530 is sandwiched between the rear side plate 580 and the cover body 591. An intermediate pressure chamber 60 is located in an opening at the center of the gasket 530 and an intermediate pressure region of the compressor 500 is located inside the opening at the center of the gasket 530.

As shown in Fig. 14, the gasket 530 is provided with a plurality of slits arranged along the peripheral edge of the gasket 530 with a gap portion therebetween. In this embodiment, the gasket 530 is provided with a first slit 530a, a second slit 530b, a third slit 530c, a fourth slit 530d, a fifth slit 530e, A sixth slit 530f, and a seventh slit 530g are formed.

A filter section is formed at one end of the first slit 530a. The filter portion has a comb-like shape. At the tip of the filter portion, a plurality of inflow ports 530ae are formed in a substantially circular shape. The filter section includes a plurality of inlet passages 530am connected in one-to-one correspondence with the plurality of inlet openings 530ae, one end of which is connected in parallel with each other, and a plurality of inlet passages 530b connected to the other end of each of the plurality of inlet passages 530am And a connection passage 530an. The plurality of inflow ports 530ae are formed in a position communicating with the first rinse oil portion 41. Therefore, the first slit 530a is located along the radial direction of the gasket 530. [

At the end of the seventh slit 530g, an outlet 530ge having a substantially circular shape is formed. The outlet 530ge is formed at a position in communication with the intermediate pressure chamber 60. [ Therefore, the seventh slit 530g has a portion along the circumferential direction of the gasket 530 and a portion along the radial direction of the gasket 530. [

The gasket 530 is provided with a first gap portion 530m between the first slit 530a and the second slit 530b and a second gap portion 530n between the second slit 530b and the third slit 530c, A third gap portion 530p between the third slit 530c and the fourth slit 530d and a fourth gap portion 530q between the fourth slit 530d and the fifth slit 530e, A fifth gap portion 530r is formed between the slit 530e and the sixth slit 530f and a sixth gap portion 530s is formed between the sixth slit 530f and the seventh slit 530g.

As shown in Figs. 14 and 15, a groove is formed at a position opposite to the gap portion in the end surface 591t of the cover body 591. Fig. The first groove 591b and the second gap portion 530n are formed at positions opposed to the first gap portion 530m in the end face 591t of the cover body 591 A third groove 591d is formed at a position facing the third gap portion 530p and a fourth groove 591e is formed at a position facing the fourth gap portion 530q. A fifth groove 591f is formed at a position facing the sixth gap portion 530r and a sixth groove 591g is formed at a position facing the sixth gap portion 530s. Further, the length of each groove is longer than the length of the corresponding gap portion. A seventh groove 591a is formed in the end surface 591t of the cover body 591 at a position facing the connection passage 530an.

The rear side plate 580 and the cover body 591 are coupled to each other with the gasket 530 interposed therebetween so that the first slit 530a, the second slit 530b, the third slit 530c The fourth slit 530d, the fifth slit 530e, the sixth slit 530f and the seventh slit 530g are formed in the first groove 591b, the second groove 591c, the third groove 591d Through the fourth groove 591e, the fifth groove 591f and the sixth groove 591g so that the lubricating oil L5 in the first oil storing portion 41 flows. The flow path 65 communicates the first rinse portion 41 and the intermediate pressure chamber 60. The flow passageway 65 is formed around the periphery of the gasket 530. The cross-sectional area of the passage of each groove is larger than the cross-sectional area of the passage of the slit with which the groove is opposed, so that each slit becomes a throttle of the flow passage 65.

The grooves are not limited to the end surface 591t of the cover body 591 and the gasket 530 may be provided on the end surface 591t of the cover body 591. In this embodiment, And the end face of the rear side plate 580 facing the end face 591t of the cover body 591 and the end face of the rear side plate 580 facing the end face 591t of the cover body 591, .

In the compressor 500, when the electric motor 570 is driven, the rotational force generated by the electric motor 570 is transmitted to the rotor 561 through the rotating shaft 550. Thereby, the rotor 561 rotates in the cylinder chamber 12, and the volume in the compression chamber 20 repeats expansion and contraction. The low-pressure refrigerant having passed through the suction passage 546 and the suction port 547 flows from the suction chamber 10 into the compression chamber 20 whose volume is enlarged.

The refrigerant compressed in the compression chamber 20 pushes the valve unit 31 to open it and passes through the discharge port 548 and passes through the discharge space 32, the communication hole 582, the communication hole 594 , And reaches the oil separation chamber (40). The refrigerant gas from which the lubricating oil has been separated in the oil separation chamber (40) passes through the oil separation cylinder (592) and is discharged from the discharge port (521) to the outside.

The lubricating oil separated from the refrigerant gas and passing through the drain port 595 and stored in the first rinse section 41 flows into the flow path 65 from the inlet port 530ae of the gasket 530. The lubricating oil L5 is decompressed when it passes through the flow path 65 and flows into the intermediate pressure chamber 60 from the outlet port 530ge. The lubricating oil L5 in the intermediate pressure chamber 60 flows into the back pressure chamber 50 and becomes the back pressure of the vane 562 and lubricates the back pressure chamber 562 of the sliding portion of the compression mechanism portion 560 including the vane 562 and the rotor 561 Lubricate.

In the compressor 500 according to the present embodiment, since the plurality of slits constituting a part of the flow path 65 are formed so as to be arranged along the peripheral edge of the gasket 530 with the gap portion therebetween, The gap portion can secure the strength of the gasket 530 while forming the throttle by the slit. By forming a plurality of slits along the peripheral edge of the gasket 530, the length of each slit can be made longer than in the case of forming the hole as the flow path in the central portion of the gasket 530, Can be secured.

In addition, since the communication passage 65 is in communication with the intermediate pressure chamber 60, the lubricating oil can be depressurized while securing the supply of the lubricating oil to the intermediate pressure chamber 60, so that the power loss of the compressor 500 can be reduced .

By forming the groove in the cover member 591, it is not necessary to add a member for forming the flow path 65, and the groove can be formed easily.

Since the filter portion is formed at the inlet of the flow path 65, it is possible to prevent foreign matter from entering the flow path 65 and obstructing the flow path 65. It is not necessary to add a member for forming the filter portion and the slit constituting the flow path 65 and the slit constituting the filter portion are formed in the same step So that the filter portion can be easily formed. Instead of forming the filter portion in the gasket 530, a filter portion separate from the gasket 530 as in Embodiment 4 may be formed.

In the description of the above-described embodiments, combinations that can be combined may be combined with each other. In Embodiments 1 to 5, the number of slits formed in the gaskets 130, 230, 330, 430, and 530 is 3 to 7, but the number of slits is not limited to these, and a plurality of slits may be used. The lengths of the slits forming the flow passages 61, 62, 63, 64, and 65 are longer than the lengths of the grooves in Embodiments 1 to 5, It may be long. In this case, the strength of the opposing gasket can be further increased. The flow paths 61 and 62 in the first and second embodiments communicate the first rinse portion 41 and the suction chamber 10 through the second rinse portion 42. However, The first rinsing portion 41 and the compression chamber 20 may be communicated with each other. In this case, by appropriately throttling the lubricating oil to the compression chamber 20, stable compression performance can be obtained. In Embodiments 1 to 5, the slit may be a through-hole or a groove with a bottom. In the fourth and fifth embodiments, the filter portion is formed at the inlet of the flow path. However, in the first to third embodiments, the filter portion may be formed at the inlet of the flow path.

The peripheral edge of the gasket may be an outer periphery along the outer periphery of the plate-like gasket, or an inner periphery continuous along the opening of the gasket. If the slit is formed in an annular shape along the circumferential direction of the gasket, the length of each slit can be made longer, and a stable throttle passage can be formed.

The presently disclosed embodiments are to be considered in all respects as illustrative and not restrictive. It is intended that the scope of the invention be indicated by the appended claims rather than the foregoing description and that all changes that come within the meaning and range of equivalency of the claims are intended to be embraced

10: suction chamber
12: Cylinder chamber
20: compression chamber
30: Discharge chamber
31: Valve unit
32: Discharge space
40: Oil separation chamber
41: first low-
42: Second low-
50: back pressure chamber
60: Middle pressure chamber
61, 62, 63, 64, 65: distribution channel
100, 200, 300, 400, 500: compressor
100h, 300h, 400h, 500h: housing structure
110, 310, 510: motor housing
111, 511: inlet
120, 320, 420, 520: rear housing
124, 521:
125: partition part
126, 582, 594: communicating hole
127, 227, 366:
128, 584: through hole
130, 230, 330, 430, 530:
130a, 230a, 330a, 430a, 530a:
130ae, 230ae, 330ae, 430ae, 530ae: inlet
130b, 230b, 330b, 430b, 530b:
130c, 230c, 330c, 430c, and 530c:
130d, 230d, 530d: fourth slit
130de, 230de, 330ce, 430ce, 530ge: outlet
130 m, 230 m, 330 m, 430 m and 530 m:
130n, 230n, 330n, 430n, 530n:
130p, 230p, 530p: a third gap portion
140: fixed block
140a, 162a, 362a, 462x, 591b:
140b, 162b, 362b, 462y, 591c:
140c, 162c, 591d: third groove
140t, 162t, 362t, 462t, 591t: section
150, 550:
150p: eccentric pin
151: Bush
152: Bearings
160, 360, 460, 560: compression mechanism
161, 261, 361, 461: movable scroll
162, 362, 462: fixed scroll
162h, 548: discharge port
164, 364: oil return passage
170, 570: electric motor section
171, 561: Rotor
172, 572:
180, 592: oil separator
190: Bolt
240: spring plate
321, 421, 530an: connection path
365:
390: Regulating valve
391: Ball valve
392: coil spring
440: Front housing
462h: Refueling hole
490:
530e: fifth slit
530f: sixth slit
530 g: slit 7
530q: fourth gap portion
530r: fifth gap portion
530s: sixth gap portion
540:
541: Cylinder
542: Front side plate
545, 583: an annular groove
546: Suction passage
547: Suction port
549:
561m: Vane home
562: Vane
571: Motor rotor
580: Rear side plate
590: Oil separator
591: Cover body
591a: Seventh Home
591e: fourth home
591f: The fifth home
591g: the sixth home
593: opening
595: Pouring water

Claims (8)

The plurality of housing parts including the first housing part and the second housing part are coupled to each other to constitute the housing construction body,
A gasket is interposed between the first housing part and the second housing part,
Wherein the housing construction body has a compression mechanism for compressing the refrigerant sucked from the outside and has a low oil portion for storing the lubricating oil separated from the discharged refrigerant,
The gasket is provided with a plurality of slits arranged along the peripheral edge of the gasket with a gap portion therebetween,
Wherein the first housing portion has a cross section facing the gasket and a groove is formed at a position opposite to the gap portion in the cross section,
The plurality of slits are communicated with each other through the grooves in a state where the first housing part and the second housing part are coupled to each other with the gasket interposed therebetween so that the lubricating oil in the low- And a part of the < RTI ID =
And the plurality of slits serve as a throttle of the flow path. The method according to claim 1,
A compression chamber is partitioned inside the compression mechanism,
A suction chamber for sucking refrigerant compressed by the compression mechanism is externally provided inside the housing structure,
And the flow passage is in communication with the suction chamber or the compression chamber. 3. The method of claim 2,
Wherein the compression mechanism section includes a fixed scroll and a movable scroll constituting the compression chamber together with the fixed scroll. The method of claim 3,
A back pressure chamber for pressing the movable scroll to elastically support the movable scroll toward the fixed scroll is formed inside the housing structure body on the side opposite to the fixed scroll side of the movable scroll,
And the flow path communicates with the back pressure chamber. The method according to claim 1,
Further comprising a rotation shaft rotatably supported within the housing structure,
Wherein the compression mechanism portion includes a rotor connected to the rotating shaft and having a plurality of vane grooves formed on an outer periphery thereof and a plurality of vanes protruding and retracted from the plurality of vane grooves,
The back pressure chamber is partitioned by the plurality of vane grooves and the plurality of vanes,
The rotor is housed in a cylinder,
Side plates are formed at both ends of the cylinder,
A discharge chamber for discharging the refrigerant compressed by the compression mechanism unit is partitioned at one end side of the side plate in the housing structure body and the storage unit is located below the discharge chamber,
An oil separator is fixed to the discharge chamber side of the side plate,
An oil separation chamber is formed in the oil separator,
And an intermediate pressure chamber communicating with the low oil pressure portion and communicating with the back pressure chamber is formed between the side plate and the oil separator,
Wherein the gasket is disposed between the side plate and the oil separator,
Wherein the flow path communicates the low oil part and the intermediate pressure chamber. The method according to claim 1,
Wherein a filter portion is formed at an inlet of the flow passage. The method according to claim 6,
And the filter portion is constituted by a slit on a comb tooth formed on the gasket. 8. The method according to any one of claims 1 to 7,
And the cross-sectional area of the groove is greater than the cross-sectional area of the slit of the groove.

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