JP2007009781A - Scroll compressor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve work efficiency and assemblability of a housing in a scroll compressor and reduce the size and weight of the scroll compressor. <P>SOLUTION: In the scroll compressor 10, a delivery chamber 40 opening on a fixed scroll 22 side and depressed in an axial direction, a separation chamber 62 separating compressed fluid from the delivery chamber 40 to a fluid and lubricating oil, and oil reservoir chamber 80 storing lubricating oil and a discharge chamber 64 discharging the fluid to an outside are adjoiningly provided in a rear housing 14 fixed on a fixed scroll 22 meshing with a movable scroll. Communication between the separation chamber 62 and the discharge chamber 64 is established through a second depressed part 54 and an oil separating pipe 52 provided on an back surface 22a of the fixed scroll 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a scroll type compressor that has a fixed scroll and a movable scroll that are meshed with each other to form a compression chamber, and compresses fluid by turning the movable scroll.

  2. Description of the Related Art Conventionally, there is known a scroll type compressor that includes a fixed scroll and a movable scroll, and compresses fluid by turning the movable scroll engaged with the fixed scroll.

  As such a scroll type compressor, for example, as disclosed in Patent Document 1, a movable scroll and a fixed scroll are disposed inside a housing, and the fixed scroll has a space between the movable scroll and the fixed scroll. A discharge port is formed to discharge the compressed fluid compressed in the compression chamber formed in the chamber, and the compressed fluid is led out from the discharge port to the discharge chamber. Since the discharge chamber communicates with the separation cylinder provided with the separation pipe, the lubricating oil in the compressed fluid is separated by introducing the compressed fluid into the separation cylinder, and the lubricating oil is contained in the housing. And the compressed fluid passes through the separation pipe and is discharged from the discharge port through a flow passage formed in the end plate of the fixed scroll.

JP 2004-60605 A

  By the way, in the prior art which concerns on patent document 1, a separation cylinder and a separation pipe are arrange | positioned substantially parallel to the axis line of a housing, and the flow path which connects the said separation cylinder and discharge outlet is with respect to the end plate of a fixed scroll. Are formed in a direction substantially perpendicular to the axis. Therefore, it is necessary to increase the thickness dimension of the end plate in the fixed scroll by the amount corresponding to the flow path, and accordingly, there is a problem that the fixed scroll becomes larger in the axial direction and the weight increases.

  Further, since the flow passage is formed by drilling or the like inside the end plate of the fixed scroll, the processing work is complicated and complicated.

  The present invention has been made in consideration of the various problems described above, and an object of the present invention is to provide a scroll type compressor that can improve the workability of the housing and can be reduced in size and weight. And

In order to achieve the above-mentioned object, the present invention provides a discharge chamber formed between a fixed scroll and a housing, into which a compressed fluid is led out under a turning action of a movable scroll meshed with the fixed scroll, In a scroll compressor comprising a separation chamber that communicates with the discharge chamber and separates the lubricating oil contained in the fluid, and an oil storage chamber that communicates with the separation chamber and stores the lubricating oil.
A discharge chamber formed in the housing, into which the fluid from which the lubricating oil is separated is introduced in the separation chamber, and in communication with a discharge port for discharging the fluid to the outside;
A dividing wall extending along the axial direction of the housing and dividing the discharge chamber, the separation chamber and the discharge chamber,
A sealing means disposed between the fixed scroll and the housing and sealing the separation chamber and the discharge chamber;
A communication path formed on a joint surface of a fixed scroll joined to the housing and disposed to face the separation chamber and the discharge chamber;
With
The separation chamber is provided with a discharge port that opens to the fixed scroll side and discharges the fluid, and the discharge port and the discharge chamber communicate with each other through the communication path.

  According to the present invention, the discharge chamber, the separation chamber, the oil storage chamber, and the discharge chamber are provided in the housing, and the communication path is formed so as to face the separation chamber and the discharge chamber with respect to the joint surface of the fixed scroll to which the housing is joined. Provided. When the fluid in the separation chamber is discharged from the discharge port of the separation chamber, the fluid is led out to the discharge chamber through the communication path and discharged from the discharge port to the outside.

  In this way, the communication path that connects the separation chamber and the discharge chamber is processed with respect to the joint surface of the fixed scroll, so that a communication path is formed in the fixed scroll by drilling or the like. Thus, the communication path can be easily formed. Therefore, the workability of the fixed scroll can be improved, and the separation chamber and the discharge chamber can be communicated with each other through the communication path only by joining the fixed scroll and the housing. The assembling property of the scroll compressor can be improved.

  In addition, in contrast to the conventional scroll compressor in which the communication path is provided inside the fixed scroll, the thickness dimension in the axial direction of the fixed scroll can be reduced by providing the communication path on the joint surface. Thus, the fixed scroll can be made smaller and lighter than a conventional scroll compressor.

  Furthermore, by providing a dividing wall along the axial direction inside the housing, the dividing wall can function as a reinforcing rib for the housing including the discharge chamber, the separation chamber, and the discharge chamber. Stiffness can be improved.

  Furthermore, by disposing the separation chamber at a position adjacent to both the discharge chamber and the discharge chamber in the housing, the separation distance between the separation chamber and the discharge chamber and the separation distance between the separation chamber and the discharge chamber are reduced. Therefore, the passage for communicating between the discharge chamber and the discharge chamber and the separation chamber can be set as short as possible. As a result, the number of processing steps required to form the passage can be reduced, and the manufacturing cost can be reduced.

  Still further, the sealing means is a gasket having a first sealing portion for sealing the discharge chamber and a second sealing portion for sealing the separation chamber, thereby corresponding to the discharge chamber and the separation chamber. Compared with the case where a plurality of sealing members are provided, all the sealing can be performed with a single gasket, so that the number of parts and the manufacturing cost can be reduced, and the assembling property can be reduced. Can be improved.

  In addition, a conventional compressor provided with a safety valve in a discharge chamber communicating with the compression chamber by disposing a safety valve in the discharge chamber that opens when the pressure of the fluid in the discharge chamber exceeds a predetermined value. Compared to the above, by providing a safety valve in the discharge chamber where the fluid pressure is more stable than the discharge chamber, the safety valve can be prevented from malfunctioning due to a sudden change in the pressure of the fluid, and the safety valve operates reliably at a predetermined pressure. It becomes possible to make it.

  Further, by providing the discharge port in an oil separation member having a pipe portion inserted into the separation chamber and a flange portion held between the fixed scroll and the housing, the fluid in the separation chamber is communicated through the pipe portion. It becomes possible to distribute reliably and suitably to the passage.

  According to the present invention, the following effects can be obtained.

  That is, by processing the communication passage that connects the separation chamber and the discharge chamber in the housing with respect to the joint surface of the fixed scroll, the workability is improved as compared with the case where the passage is formed inside the fixed scroll. Since the separation chamber and the discharge chamber can be communicated with each other only by joining the fixed scroll and the housing, the assembly of the scroll compressor is improved. Can be made.

  In addition, since the thickness dimension in the axial direction of the fixed scroll can be reduced by providing the communication path on the joint surface, the fixed scroll can be reduced in size and weight as compared with the conventional scroll compressor. it can.

  Furthermore, the rigidity of the housing including the discharge chamber, the separation chamber, and the discharge chamber can be improved by the dividing wall provided inside the housing.

  A preferred embodiment of a scroll compressor according to the present invention will be described in detail below with reference to the accompanying drawings.

  In FIG. 1, reference numeral 10 indicates a scroll compressor according to an embodiment of the present invention.

  The scroll compressor 10 includes a front housing 12 formed in a cup shape, and a rear housing (housing) 14 connected to the front housing 12.

  In the upper part of the front housing 12, for example, a suction port 16 for introducing a fluid made of a refrigerant gas or the like into the inside thereof is formed. On the other hand, at the upper part of the rear housing 14, a discharge port 18 is formed for discharging the compressed fluid obtained by compressing the fluid by the scroll compressor 10 to, for example, a refrigerant circulation system. The front housing 12 and the rear housing 14 are provided with a plurality of attachment portions 20 for attaching the scroll compressor 10 to, for example, an engine or an external device. Inside the front housing 12, a fixed scroll 22 and a movable scroll 24 that pivots with respect to the fixed scroll 22 are inserted and arranged from the opened one end side.

  The fixed scroll 22 includes a fixed-side substrate portion 26 sandwiched between the front housing 12 and the rear housing 14, and a fixed-side spiral wall 28 erected in a spiral shape from the fixed-side substrate portion 26 toward the movable scroll 24. It consists of.

  As shown in FIGS. 2 and 3, the fixed-side spiral wall 28 is formed so that the wall thickness gradually increases in the radially outward direction from the outermost peripheral end of the fixed-side spiral wall 28 toward the inner peripheral end. Thus, the portion that is vertically upward in the scroll compressor 10 is formed to be the thickest. In the upper part of the fixed-side spiral wall 28, a guide passage 30 that is recessed in a radially inward direction is formed.

  The guide passage 30 is formed in a substantially rectangular shape in cross section and substantially in parallel with the axis of the fixed scroll 22, and an oil supply hole 32 is formed in the fixed side substrate portion 26 facing the guide passage 30. The oil supply hole 32 communicates with a supply passage 34 penetrating the fixed-side substrate portion 26, and communicates with the back surface (joining surface) 22a side of the fixed scroll 22 through the supply passage 34 (see FIG. 4). Further, the guide passage 30 is formed with a set of dam walls 36 erected outward in the radial direction on both sides of the guide passage 30 (see FIG. 3). The supply passage 34 is also formed substantially in parallel with the axis of the fixed scroll 22 like the guide passage 30. Thus, when lubricating oil (for example, oil) is supplied from the rear housing 14 side to the supply passage 34, the lubricating oil is discharged to the guide passage 30 through the oil supply hole 32, and the blocking wall Since the flow is prevented by 36 from flowing in the circumferential direction of the fixed spiral wall 28, it flows along the guide passage 30.

  On the other hand, as shown in FIGS. 1 and 2, the rear housing 14 is mounted on the back surface 22 a of the fixed side substrate portion 26 in the fixed scroll 22 via a gasket 38 formed in a thin plate shape. A lead-out hole 42 communicating with a discharge chamber 40 (described later) formed between the compression chamber 110 and the rear housing 14 is formed in a substantially central portion of the back surface 22a.

  A discharge valve 44 that closes the outlet hole 42 and bends and opens when the fluid compressed in the compression chamber 110 reaches a predetermined pressure is formed on the back surface 22a of the fixed scroll 22, and the discharge valve. A retainer 46 for restricting the valve opening of 44 is provided. One end of the discharge valve 44 is disposed at a position facing the lead-out hole 42, and the other end is fixed to a straight line spaced apart from the lead-out hole 42 by a predetermined distance via a bolt 48 with a retainer 46. (See FIGS. 5 and 6). The discharge valve 44 is seated so as to close the outlet hole 42, and the discharge valve 44 is separated from the outlet hole 42 by the pressure of the compressed fluid introduced into the outlet hole 42, so that the fluid passes through the outlet hole 42. It is supplied to the discharge chamber 40.

  Since the retainer 46 is inclined at a predetermined angle in a direction away from the back surface 22a with the end fixed by the bolt 48 as a base point, the discharge valve 44 is opened by the compressed fluid led out through the lead-out hole 42. When this happens, the discharge valve 44 comes into contact with the retainer 46 and its valve opening is regulated.

  Further, as shown in FIGS. 5 and 6, the supply passage 34 opened to the back surface 22 a of the fixed scroll 22 is formed in an upper portion of the back surface 22 a and is arranged substantially in line with the outlet hole 42. The back surface 22a is formed between the lead-out hole 42 and the supply passage 34, and is recessed by a predetermined depth. The first recess 50 is adjacent to the first recess 50, and an oil separation pipe (oil separation member). ) 52 is disposed, and third and fourth recesses 56 and 58 are formed on the lower side of the back surface 22a. In addition, the 1st-4th recessed parts 50, 54, 56, and 58 are depressed by substantially the same depth from the surface of the back surface 22a.

  The first recess 50 is formed substantially parallel to the discharge valve 44 and the retainer 46 and is formed at a position facing the discharge chamber 40 of the rear housing 14.

  The second recess 54 is disposed at a position that is substantially symmetric with the first recess 50 with respect to a vertical line passing through the center of the outlet hole 42, and extends in the vertical direction of the back surface 22 a to separate the rear housing 14. 62 and a discharge chamber 64 (described later). An oil separation pipe 52 is attached to one end of the second recess 54 on the lead-out hole 42 side via a circular recess 60 formed in a substantially circular shape (see FIG. 7). The depth D1 of the second recess 54 is set slightly deeper than the depth D2 of the circular recess 60 (D1> D2) (see FIG. 8).

  As shown in FIGS. 6 and 7, the oil separation pipe 52 is formed in a cylindrical portion (tube portion) 66 formed in a cylindrical shape, and is formed at an end portion of the cylindrical portion 66 so as to expand radially outward. Disc-shaped flange portion 68. The cylindrical portion 66 is eccentrically connected to the center of the disk-shaped flange portion 68, and a passage (discharge port) 70 penetrating in the axial direction is formed inside the cylindrical portion 66 and the flange portion 68. Yes.

  The flange portion 68 is formed with an engagement groove 72 that is recessed in a substantially triangular shape in the radial inward direction from the circumferential surface thereof. When the oil separation pipe 52 is attached to the circular recess 60, the engagement groove 72 is formed. The groove 72 engages with an engaging protrusion 74 formed in the circular recess 60. Accordingly, the oil separation pipe 52 is positioned with respect to the fixed scroll 22 and the rotational displacement of the flange portion 68 in the circular recess 60 is restricted. In other words, the engagement protrusion 74 formed in the circular recess 60 functions as a detent for the oil separation pipe 52.

  Further, the flange portion 68 is formed with a groove portion 76 that is recessed toward the tube portion 66 on the surface facing the circular recess portion 60. When the flange portion 68 is inserted into the circular recess portion 60, the groove portion 76 is 2 faces the recess 54 (see FIG. 8). In other words, the passage 70 of the oil separation pipe 52 and the second recess 54 communicate with each other through the groove 76.

  The oil separation pipe 52 is configured such that the gasket 38 is brought into contact with the back surface 22a of the fixed scroll 22 with the flange portion 68 inserted into the circular recess 60, and the rear housing 14 is brought into contact with the gasket 38. The oil separation pipe 52 is sandwiched and held between the fixed scroll 22 and the rear housing 14.

  Instead of providing the engagement groove 72 of the oil separation pipe 52 and the engagement protrusion 74 of the circular recess 60 described above, the flange 68 of the oil separation pipe 52a shown in FIG. It may be fixed at 78. As a result, the oil separation pipe 52 is held in a state of being positioned with respect to the fixed scroll 22, and the oil separation pipe 52 is more reliably secured by the clamping force by the fixing bolt 78 and the clamping force by the fixed scroll 22 and the rear housing 14. Fixed to.

  As shown in FIG. 6, the third recess 56 is disposed at a position symmetrical to the second recess 54 with the lead-out hole 42 as the center, and faces the discharge chamber 40 of the rear housing 14 in the same manner as the first recess 50. It is formed in the position to do.

  The fourth recess 58 is arranged at a position that is in line with the discharge valve 44 and the retainer 46 and is formed at a position facing an oil storage chamber 80 (described later) of the rear housing 14.

  Between the circular recessed part 60 and the 4th recessed part 58 in the 2nd recessed part 54, the 1st communicating path 82 is formed substantially parallel to the discharge valve 44 and the retainer 46, and the said 1st communicating path 82 is predetermined from the back surface 22a. It is formed in a substantially straight line with a depth. When the fixed scroll 22 is assembled to the rear housing 14, one end of the first communication passage 82 faces the supply passage 34 communicating with the separation chamber 62 of the rear housing 14, and the other end is oil storage. It arrange | positions so that the chamber 80 may be opposed.

  A second communication passage 84 is formed below the fourth recess 58 so as to be substantially orthogonal to the axes of the discharge valve 44 and the retainer 46, and the second communication passage 84 is substantially the same as the first communication passage 82. It is formed in a substantially straight line indented to a depth of. When the fixed scroll 22 is assembled to the rear housing 14, one end portion of the second communication passage 84 faces a filter chamber 88 (described later) in which the filter 86 is mounted, and the other end portion is the rear housing. 14 is disposed so as to face an end portion of an oil supply groove 90 (described later) formed in 14.

  Further, a plurality of (for example, four locations) first bolt holes 92 are formed in the vicinity of the outer peripheral portion of the fixed scroll 22 at a predetermined interval, and a plurality of (for example, four) first bolt holes 92 are inserted through the first bolt holes 92. The bolt 94 is screwed into the screw hole 100 of the front housing 12 through the second bolt hole 96 of the gasket 38 and the third bolt hole 98 of the rear housing 14. As a result, the fixed scroll 22 is integrally fixed to the rear housing 14 and the front housing 12. At this time, an O-ring 102 is attached to the fixed-side substrate portion 26 of the fixed scroll 22 through an annular groove, and the suction chamber 104 formed by the fixed scroll 22 and the front housing 12 is sealed by the O-ring 102. Thus, airtightness is maintained (see FIG. 1).

  As shown in FIG. 1, the movable scroll 24 is erected in a spiral shape from the movable side substrate portion 106 to the fixed scroll 22 side from the movable side substrate portion 106, and engages with the fixed side spiral wall 28. And a spiral wall 108.

  A compression chamber 110 is formed by the fixed-side substrate portion 26 and the fixed-side spiral wall 28 in the fixed scroll 22 and the movable-side substrate portion 106 and the movable-side spiral wall 108 in the movable scroll 24.

  In order to seal the compression chamber 110, seal members 112 are slidably contacted with the movable side substrate portion 106 and the fixed side substrate portion 26 at the respective ends of the fixed side spiral wall 28 and the movable side spiral wall 108. It is installed.

  Further, when the movable side substrate portion 106 abuts on the fixed side spiral wall 28, the end portion of the guide passage 30 of the fixed scroll 22 is closed by the movable side substrate portion 106, and the guide passage 30 and the movable side substrate portion 106 are closed. It functions as an oil storage tank 114 in which a predetermined amount of lubricating oil is stored (see FIG. 4).

  A shaft portion 118 that is one end of the rotating shaft 116 is inserted into the other end portion of the front housing 12. The shaft portion 118 is rotatably supported via a first bearing 120 held at the other end of the front housing 12. A sealing member 122 for sealing the suction chamber 104 is fitted into the shaft portion 118 of the rotating shaft 116. The sealing member 122 is supported by an opening shoulder portion of the front housing 12, and is configured, for example, by covering a ring-shaped core made of a metal material with a rubber material or a resin material.

  On the other hand, the other end of the rotating shaft 116 is provided with a support 124 having a diameter larger than that of the one end. The support body 124 is rotatably supported by inserting an outer peripheral surface of the support body 124 into a second bearing 126 held by the front housing 12. A pin 128 eccentric to the axis is fixed to the support 124. That is, the rotating shaft 116 is rotatably supported by the first and second bearings 120 and 126.

  A mounting hole 130 opened toward the second bearing 126 side is formed in the movable side substrate portion 106 of the movable scroll 24, and a bush 134 is rotatably supported in the mounting hole 130 via a swivel bearing 132. ing. The bush 134 is formed with a hole 136 that is eccentric with respect to the axis thereof, and the pin 128 of the support 124 is inserted into the hole 136.

  An annular groove is formed at the tip of the pin 128, and a locking ring 138 is fitted into the annular groove. Accordingly, the axial movement of the pin 128 relative to the bush 134 is restricted by the locking ring 138 mounted in the annular groove. In addition, a disc-shaped balance weight 140 is mounted near the base of the bush 134.

  Inside the front housing 12, there is a thrust plate 142 that slidably supports the movable scroll 24 by a sliding contact surface, and an Oldham ring that restricts the rotation of the movable scroll 24 and allows the movable scroll 24 to turn. 144, and the Oldham ring 144 is supported so as to be reciprocally displaceable in one direction orthogonal to the axis of the rotating shaft 116, and the axial thrust force applied to the movable scroll 24 is transmitted via the thrust plate 142. An Oldham base 146 to be received is disposed.

  A pair of first engaging recesses 148 that allow the movable scroll 24 to reciprocate only in the radial direction are formed on the front side of the movable side substrate 106 in the movable scroll 24. A pair of first engagement protrusions 150 protruding in the radial direction of the Oldham ring 144 are slidably engaged with the first engagement recess 148.

  Further, in order to allow the movable scroll 24 to reciprocate only in the direction orthogonal to the first engagement recess 148, the Oldham ring 144 has a diameter orthogonal to the first engagement protrusion 150. A pair of second engaging protrusions (not shown) protruding in the direction are formed. The pair of second engaging convex portions are slidably engaged with a pair of second engaging concave portions (not shown) protruding in the radial direction of the Oldham base 146.

  Further, the Oldham base 146 is fastened by a plurality of (for example, two) bolts 154 via the shim 152. This shim 152 is mounted to adjust the axial gap between the fixed scroll 22 and the movable scroll 24 to a predetermined value. When the gap is appropriately adjusted, the shim 152 It is not necessary to wear it.

  A pulley 158 is attached to the other end portion of the front housing 12 via a third bearing 156 on the outer peripheral portion thereof. A rotational force is transmitted to the pulley 158 from a rotational drive source such as an engine (not shown), and the rotational force is transmitted to the rotating shaft 116 by an on / off operation of an electromagnetic clutch 160 disposed in the pulley 158 or Detachment is performed.

  As shown in FIG. 2, a pair of first positioning holes 162 are formed on the end surface of the front housing 12 at a predetermined interval in a diagonal line. In the first positioning hole 162, a pair of positioning pins 164 are inserted and fixed at predetermined positions in the axial direction thereof. The positioning pin 164 functions as a positioning reference when the front housing 12, the fixed scroll 22, the gasket 38, and the rear housing 14 are assembled.

  That is, a pair of penetrating second positioning holes 166 are formed in the fixed scroll 22 corresponding to the positioning pins 164, and a pair of third positioning holes 168 are formed in the rear housing 14. 38 is formed with a pair of penetrating fourth positioning holes 170.

  Note that the positioning pin 164 may be inserted in advance into the second positioning hole 166 through which the fixed scroll 22 passes, or may be inserted into the third positioning hole 168 of the rear housing 14 and fixed in advance.

  As shown in FIG. 1, the rear housing 14 is connected to the front housing 12 via a fixed scroll 22 and a gasket 38. The rear housing 14 is sandwiched between a fixed scroll 22 and a gasket 38. As shown in FIGS. 5 and 10, the rear housing 14 is opened to the joint surface 172 side where the gasket 38 abuts, and is compressed in the compression chamber 110. A discharge chamber 40 into which the fluid is introduced; a separation chamber 62 that communicates with the discharge chamber 40 and separates the lubricating oil contained in the fluid; an oil storage chamber 80 in which the separated lubricating oil is stored; A discharge chamber 64 into which fluid is introduced after the lubricating oil is separated is formed.

  In the rear housing 14, the discharge chamber 40 and the oil storage chamber 80 are separated by a first boundary wall (partition wall) 174, and the discharge chamber 40 and the discharge chamber 64 are separated by a second boundary wall (partition wall) 176. In addition, the oil storage chamber 80 and the discharge chamber 64 are separated by a third boundary wall (dividing wall) 178. The separation chamber 62 is separated from the discharge chamber 40, the oil storage chamber 80, and the discharge chamber 64 by an annular wall (partition wall) 180 formed around the separation chamber 62.

  As shown in FIG. 11, when the fixed scroll 22 is assembled to the rear housing 14, the discharge chamber 40 is positioned so as to face the lead-out hole 42, the first and third recesses 50, 56 of the fixed scroll 22. And is recessed by a predetermined depth along the axial direction of the rear housing 14.

  The discharge chamber 40 is formed on the joint surface 172 of the rear housing 14 so as to be about half the surface area. A discharge valve 44 and a retainer 46 are inserted into the discharge chamber 40.

  The separation chamber 62 is provided adjacent to the discharge chamber 40 and the discharge chamber 64 via the annular wall 180 and is formed at a position facing the oil separation pipe 52 when the fixed scroll 22 is assembled to the rear housing 14. (See FIG. 12). As shown in FIGS. 10 and 11, the separation chamber 62 has a substantially circular cross section and is formed at a predetermined depth along the axial direction of the rear housing 14. The separation chamber 62 is formed with first and second introduction passages 182 and 184 in which an annular wall 180 is notched between the separation chamber 62 and the discharge chambers through the first and second introduction passages 182 and 184. Forty fluids are introduced into the separation chamber 62. The first and second introduction passages 182 and 184 are formed at a predetermined interval so as to be substantially orthogonal to each other, and are formed so as to be tangential to the inner peripheral surface of the separation chamber 62. Therefore, the fluid introduced from the first and second introduction passages 182 and 184 into the separation chamber 62 flows in the separation chamber 62 while swirling along the inner peripheral surface thereof.

  Further, as shown in FIG. 12, the separation chamber 62 has a lead-out passage 186 formed in a bottom portion 62a spaced from the opening portion on the joint surface 172 side, and the lead-out passage 186 is formed along the axis of the separation chamber 62. It is inclined at a predetermined angle with respect to the joint surface 172. Specifically, the lead-out passage 186 has one end connected to a boundary portion with the inner peripheral surface that is vertically downward in the bottom 62a, and extends in a state inclined downward from the bottom 62a by a predetermined angle, The other end is open to the first boundary wall 174 of the joint surface 172 (see FIG. 10). That is, the inside of the separation chamber 62 and the joint surface 172 are in communication with each other through the outlet passage 186. The lead-out passage 186 is connected to the vicinity of the joint portion of the first boundary wall 174 with the annular wall 180.

  As shown in FIGS. 11 and 12, one end portion of the first communication passage 82 of the fixed scroll 22 faces the lead-out passage 186, and the other end portion of the first communication passage 82 faces the oil storage chamber 80. ing.

  Further, a cylinder portion 66 of the oil separation pipe 52 is inserted into the separation chamber 62, and a clearance 188 having a predetermined interval is provided between the cylinder portion 66 and the inner peripheral surface of the separation chamber 62. That is, the fluid introduced from the discharge chamber 40 to the separation chamber 62 flows to the bottom 62a side through the clearance 188 and then to the flange portion 68 side of the oil separation pipe 52 through the passage 70 of the cylindrical portion 66. And is led out to the second recess 54 via the groove 76 of the oil separation pipe 52.

  The oil storage chamber 80 is provided on the lower side of the rear housing 14, and is formed at a position facing the fourth recess 58 of the fixed scroll 22 when the fixed scroll 22 is assembled to the rear housing 14.

  Further, as shown in FIG. 13, a filter chamber 88 to which a filter 86 capable of removing dust and the like in the lubricating oil is attached is provided at the lower portion of the oil storage chamber 80, and the filter chamber 88 is arranged in the axial direction. It is formed in a bottomed shape with a predetermined depth along. The filter chamber 88 is formed independently of the oil storage chamber 80.

  The filter 86 includes a filter member 190 formed in a cylindrical shape and having a mesh formed in a mesh shape, and a holding case 192 that holds the filter member 190 and attaches it to the filter chamber 88. As shown in FIG. 10, the lubricating oil communicates with the filter chamber 88 through a pair of third and fourth introduction passages 194 a and 194 b formed between the filter chamber 88 and the oil storage chamber 80. Then, when the lubricating oil passes from the outer peripheral side to the inner peripheral side of the filtering member 190, dust (for example, iron powder) contained in the lubricating oil is removed. At this time, the dust is held inside the filter chamber 88 formed in a bottomed shape.

  As shown in FIG. 13, the depth D3 of the third and fourth introduction passages 194a, 194b is formed shallower than the depth D4 along the axial direction of the filter chamber 88 (D3 <D4). The depth of the third and fourth introduction passages 194a, 194b on the oil storage chamber 80 side is formed shallower than the depth of the third and fourth introduction passages 194a, 194b on the filter chamber 88 side. This prevents dust or the like that has entered the filter chamber 88 from returning to the oil storage chamber 80 through the third and fourth introduction passages 194a and 194b, and the depth of the third and fourth introduction passages 194a and 194b. Since the filter chamber 88 side is formed deeper, the dust is guided to the filter chamber 88 side in the third and fourth introduction passages 194a and 194b, and the dust is suitably contained in the filter chamber 88. It becomes possible to collect.

  As shown in FIGS. 10 and 14A, the discharge chamber 64 is formed with a valve hole 64a communicating with the outside on the inner wall surface of the discharge chamber 64, and fluid in the discharge chamber 64 is passed through the valve hole 64a. An open valve (safety valve) 89 for discharging to the outside is mounted. The open valve 89 includes a body 89a formed in a bottomed cylindrical shape, a valve body 89c that can be seated on a port 89b formed in the body 89a, and the valve body 89c on the port 89b side. It includes a spring 89d that urges toward the end, and a holding portion 89e that holds the end of the spring 89d.

  The body 89 a is screwed into the valve hole 64 a via a screw engraved on the outer peripheral surface thereof, and a port 89 b formed on one end side of the body 89 a is disposed inside the discharge chamber 64. Then, when a fluid is supplied into the discharge chamber 64 and the pressure of the fluid exceeds a predetermined value set in advance, the fluid flows into the body 89a through the port 89b. The valve body 89c is pressed, and the seat portion 89f of the valve body 89c is displaced in a direction away from the port 89b against the elastic force of the spring 89d (see FIG. 14B). Thereby, the fluid flows through the inside of the body 89a through the plurality of slits formed on the outer peripheral surface of the valve body 89c from the port 89b, and is discharged from the other end of the body 89a to the outside.

  Then, when the pressure in the discharge chamber 64 decreases to a desired pressure value, the spring force of the spring 89d overcomes the pressure and the valve body 89c is seated on the port 89b again via the seat portion 89f. Thus, the port 89b is closed. Thus, the valve body 89c opens and closes according to the pressure level inside the discharge chamber 64, whereby the pressure in the discharge chamber 64 is maintained at a desired pressure value.

  On the other hand, the joining surface 172 of the rear housing 14 extends along the outer peripheral portion of the discharge chamber 40 in the joining surface 172 from the vicinity of the filter chamber 88 in which the filter 86 is mounted, as shown in FIG. An oil supply groove 90 extending to the vicinity of the end of the second boundary wall 176 between the discharge chamber 40 and the discharge chamber 64 is formed. The oil supply groove 90 is formed to be recessed from the joint surface 172 by a predetermined depth. Further, as shown in FIG. 11, the oil supply groove 90 is a second communication path formed at one end portion on the back surface 22 a of the fixed scroll 22 when the fixed scroll 22 is assembled to the rear housing 14. A position opposite to one end portion of 84 and the other end portion faces the supply passage 34.

  That is, since the second communication passage 84 is connected to the center of the filter chamber 88 and the oil supply groove 90, the lubricating oil from which dust has been removed in the filter chamber 88 is supplied to the second communication passage 84. The oil flows from the passage 84 to the oil supply groove 90 and is supplied from the supply passage 34 to the oil supply hole 32.

  As shown in FIGS. 11 and 15, the gasket 38 is formed in a shape corresponding to the back surface 22 a of the fixed scroll 22 and the joint surface 172 of the rear housing 14, and is formed in a thin plate shape having a substantially constant thickness. .

  The gasket 38 includes a discharge opening 196 that opens in substantially the same shape as the discharge chamber 40 and an oil storage opening that opens in substantially the same shape as the oil storage chamber 80 when the gasket 38 is brought into contact with the joint surface 172 of the rear housing 14. 198, a discharge opening 200 formed at a position facing the discharge chamber 64, and a separation opening 202 formed at a position facing the separation chamber 62 and blocking a part of the separation chamber 62.

  The discharge opening 200 is formed with a first partition wall (first sealing portion) 204 that closes a part of the discharge chamber 64 adjacent to the discharge opening 200.

  The separation opening 202 is formed so that the cylindrical portion 66 of the oil separation pipe 52 is inserted, and the separation opening 202 has a second partition wall portion that closes the separation chamber 62 on the outer peripheral side of the cylindrical portion 66. (Second sealing portion) 206 is formed adjacently. Since the diameter of the separation opening 202 is formed to be approximately equal to the outer diameter of the cylindrical portion 66, the separation chamber 62 is closed by the second partition portion 206 after the cylindrical portion 66 is inserted.

  In addition, a filter opening 208 having a portion facing the center of the filter 86 is formed at a position facing the filter chamber 88, and a part of the filter chamber 88 is formed on the outer periphery of the filter opening 208. A third partition wall 210 that closes is formed. The third partition wall 210 is disposed so as to contact the end surface of the holding case 192 in the filter 86.

  Further, between the discharge opening 196 and the oil storage opening 198, a throttle hole 212 having a diameter smaller than the passage diameter of the outlet passage 186 is formed at a position facing the outlet passage 186 of the rear housing 14. That is, the outlet passage 186 communicates with the first communication passage 82 through the throttle hole 212 (see FIG. 12). The throttle hole 212 is formed, for example, by punching or the like on the gasket 38, and the diameter of the throttle hole 212 is arbitrarily set according to a desired flow rate to flow through the throttle hole 212.

  On the other hand, as shown in FIG. 13, a second bolt hole 96 facing the first bolt hole 92 of the fixed scroll 22 and the third bolt hole 98 of the rear housing 14 is formed in the outer peripheral portion of the gasket 38. An annular bead 214 is formed along the outer peripheral portion of the gasket 38 in the radially inward direction from the second bolt hole 96. This bead 214 slightly bulges in the axial direction of the gasket 38, and is formed at the inner peripheral side of the oil supply groove 90 in the rear housing 14, the first and second boundary walls 174 and 176, and the portion facing the annular wall 180, respectively. Has been. Thus, when the gasket 38 is sandwiched between the fixed scroll 22 and the rear housing 14, the bead 214 can be brought into contact with the fixed scroll 22 and the rear housing 14 with certainty. It becomes possible to improve sealing performance.

  The scroll compressor 10 according to the embodiment of the present invention is basically configured as described above. Next, a case where the fixed scroll 22, the gasket 38, and the rear housing 14 are assembled will be described.

  First, the discharge valve 44 and the retainer 46 are mounted on the back surface 22a of the fixed scroll 22 meshed with the movable scroll 24, and the oil separation pipe 52 is mounted in advance on the circular recess 60 via the flange portion 68. State (see FIG. 5). Then, the gasket 38 is attached so that the separation opening 202 of the gasket 38 is inserted into the cylindrical portion 66 of the oil separation pipe 52 with respect to the back surface 22a.

  At this time, as shown in FIG. 11, the discharge opening 196 of the gasket 38 faces the lead-out hole 42 of the fixed scroll 22, the first and third recesses 50 and 56, and the discharge valve 44 and the inside thereof. While the retainer 46 is inserted, the discharge opening 200 faces the second recess 54 and the oil storage opening 198 faces the fourth recess 58.

  Further, the throttle hole 212 of the gasket 38 is opposed to one end portion of the first communication passage 82, and the filter opening 208 is opposed to one end portion of the second communication passage 84.

  Next, in a state where the gasket 38 is attached to the back surface 22 a of the fixed scroll 22, the joint surface 172 of the rear housing 14 is inserted into the gasket so that the oil separation pipe 52 of the fixed scroll 22 is inserted into the separation chamber 62. 38. As a result, the second partition wall portion 206 of the gasket 38 abuts so as to cover the opening of the separation chamber 62 and the separation chamber 62 is closed. Further, since the flange portion 68 of the oil separation pipe 52 is sandwiched via the second partition wall portion 206, the oil separation pipe 52 is held between the fixed scroll 22 and the rear housing 14 via the flange portion 68. The

  At this time, the discharge chamber 40 of the rear housing 14 is opposed to the lead-out hole 42 of the fixed scroll 22 and the first and third recesses 50 and 56 through the discharge opening 196 of the gasket 38, and the separation chamber 62 is the separation opening. While facing the oil separation pipe 52 through 202, the oil storage chamber 80 is located at a position facing the fourth recess 58 through the oil storage opening 198.

  Further, the discharge chamber 64 is opposed to the second recess 54 through the discharge opening 200, and the opening portion of the supply passage 34 is positioned to face one end of the first communication passage 82 through the throttle hole 212. A part of the discharge chamber 64 is covered with the first partition wall 204 of the gasket 38.

  Further, the filter chamber 88 is positioned opposite to one end of the second communication passage 84 through the filter opening 208, and the holding case 192 of the filter 86 provided in the filter chamber 88 is covered by the third partition wall 210. It has been broken. Thus, the filter 86 is held in the filter chamber 88 by the pressing force of the fixed scroll 22 in a state where the holding case 192 is pressed by the third partition wall 210.

  Furthermore, one end portion of the oil supply groove 90 is opposed to the other end portion of the second communication passage 84 via the gasket 38, and the other end portion of the oil supply groove 90 is opposed to the supply passage 34.

  Then, the bolt 94 is inserted from the third bolt hole 98 of the rear housing 14 to the gasket 38 side, and the bolt 94 is sequentially inserted into the second bolt hole 96 of the gasket 38 and the first bolt hole 92 of the fixed scroll 22. After that, the rear housing 14, the gasket 38 and the fixed scroll 22 are integrally assembled with the front housing 12 by screwing into the screw holes 100 of the front housing 12.

  Thus, since the discharge chamber 40, the separation chamber 62, the oil storage chamber 80, the discharge chamber 64, and the filter chamber 88 are all provided so as to be recessed in the axial direction of the rear housing 14, the discharge chamber 40, the separation chamber 62, and the oil storage chamber are provided. When the chamber 80 and the discharge chamber 64 are processed, the processing may be performed only in the same direction from the joint surface 172 side of the rear housing 14, the processing process for the rear housing 14 is shortened, and the production efficiency of the rear housing 14 is reduced. Can be improved.

  The first and second introduction passages 182 and 184 communicating with the discharge chamber 40 and the separation chamber 62, and the third and fourth introduction passages 194a and 194b communicating with the oil storage chamber 80 and the filter chamber 88 are respectively provided in the rear housing. 14 is formed at a position facing the bonding surface 172. On the other hand, a first communication path 82 that communicates the separation chamber 62 and the oil storage chamber 80 and a second communication path 84 that communicates the filter chamber 88 and the oil supply groove 90 are formed on the back surface 22 a of the fixed scroll 22. Yes. Thereby, it is easy to form each passage communicating between the compartments such as the discharge chamber 40 with respect to the back surface 22a of the fixed scroll 22 and the joint surface 172 of the rear housing 14 by processing.

  Further, by sandwiching the gasket 38 between the back surface 22a of the fixed scroll 22 and the joint surface 172 of the rear housing 14, each compartment and each passage formed in the rear housing 14 and the fixed scroll 22 are made airtight. The gasket 38 can be securely held.

  Furthermore, when the fixed scroll 22 and the rear housing 14 are connected via the gasket 38, the first and third recesses 50 and 56 that are recessed in the opposite direction to the discharge chamber 40 at positions facing the discharge chamber 40. Therefore, the capacity of the discharge chamber 40 can be easily increased. Similarly, a second recess 54 that is recessed in the opposite direction to the discharge chamber 64 is provided at a position facing the discharge chamber 64. The capacity of the discharge chamber 64 and the oil storage chamber 80 can be increased by providing the fourth recess 58 that is recessed in the opposite direction to the oil storage chamber 80 at a position facing the oil storage chamber 80.

  Next, the operation and effects of the scroll compressor 10 assembled in this way will be described.

  When the rotational force is transmitted to the rotary shaft 116 under the operation of the electromagnetic clutch 160, the support 124 rotates through the second bearing 126, and the pin 128 fixed to the support 124 thereby rotates the rotary shaft 116. It turns in a state that is eccentric with respect to the shaft center.

  Then, the bush 134 rotates through the pin 128 to slide the Oldham ring 144 and its rotation is restricted. Further, since the sliding is supported by the sliding contact surface of the thrust plate 142, the movable scroll 24 rotates. Is turned with respect to the fixed scroll 22 in a restrained state.

  As a result, the compression chamber 110 formed between the fixed scroll 22 and the movable scroll 24 gradually advances from the outer peripheral portion to the central portion, and the fluid introduced into the suction chamber 104 under the sealing action of the seal member 112. Is gradually compressed. The compressed fluid is led out from the lead-out hole 42 to the discharge chamber 40 by separating the discharge valve 44 from the lead-out hole 42 under the pressure action.

  Next, the fluid is introduced from the discharge chamber 40 into the separation chamber 62 through the first and second introduction passages 182 and 184. At this time, since the fluid is introduced in a tangential direction with respect to the inner peripheral surface of the separation chamber 62, the inside of the clearance 188 between the cylindrical portion 66 of the oil separation pipe 52 and the inner peripheral surface is disposed on the inner peripheral surface. It circulates while turning along. As a result, the lubricating oil contained in the fluid is centrifuged from the fluid by the centrifugal force generated by the swirling flow of the fluid and separated to the inner peripheral surface side.

  The fluid from which the lubricating oil has been separated flows from the clearance 188 between the separation chamber 62 and the cylindrical portion 66 to the flange portion 68 side through the passage 70 of the oil separation pipe 52, and once the second recess of the fixed scroll 22. After being distributed to 54, it is introduced into the discharge chamber 64 of the rear housing 14. As a result, the fluid is discharged to a refrigerant circulation system (not shown) through the discharge port 18 communicating with the discharge chamber 64.

  On the other hand, as shown in FIG. 12, the lubricating oil separated from the fluid flows along the inner peripheral surface of the separation chamber 62 and then moves toward the joint surface 172 through the outlet passage 186 formed in the bottom 62a. The flow rate is reduced to a predetermined amount by the throttle hole 212 of the gasket 38 that flows and faces the outlet passage 186. Then, the oil is introduced and stored in the oil storage chamber 80 of the rear housing 14 through the first communication passage 82 of the fixed scroll 22 facing the throttle hole 212. At this time, since the flow rate of the lubricating oil introduced into the oil storage chamber 80 is reduced by the throttle hole 212 with respect to the flow rate flowing through the outlet passage 186, it can be gradually introduced into the oil storage chamber 80. Thus, the oil level of the lubricating oil in the oil storage chamber 80 can be always kept stable without disturbing the oil level.

  Next, the lubricating oil stored in the oil storage chamber 80 flows to the filter chamber 88 adjacent to the oil storage chamber 80 through a pair of third and fourth introduction passages 194a and 194b, and is provided in the filter chamber 88. The filter member 190 removes dust and the like contained in the lubricating oil. The dust and the like removed by the filter 86 remains inside the filter chamber 88, and thus the dust is prevented from entering the oil storage chamber 80 again.

  Then, the lubricating oil filtered by the filter 86 is supplied to the oil supply groove 90 of the rear housing 14 through the filter opening 208 and the second communication path 84 of the fixed scroll 22, and flows along the oil supply groove 90. As a result, the oil flows into the supply passage 34 connected to the other end of the oil supply groove 90.

  Finally, the lubricating oil is discharged from the supply passage 34 through the oil supply hole 32 into the guide passage 30 and flows along the guide passage 30 to the movable scroll 24 side. At this time, the sliding surface between the movable side substrate portion 106 and the fixed side spiral wall 28 of the movable scroll 24 is supplied, and the sliding surface is lubricated.

  Further, the lubricating oil is gradually stored in the oil storage tank 114 surrounded by the blocking walls 36 provided on both sides of the guide passage 30 and the movable side substrate portion 106 of the movable scroll 24 facing the guide passage 30. Surface height increases. Then, when the end surface of the movable side substrate portion 106 is displaced to a position lower than the oil level height under the turning action of the movable scroll 24 (see the two-dot chain line shape in FIG. 4), the lubricating oil is moved to the movable side. It passes over the board portion 106 and flows along the outer wall surface of the movable scroll 24 toward the bush 134 and the rotary shaft 116. Thereby, the bush 134, the rotating shaft 116, and the like are lubricated by the lubricating oil.

  As described above, in the present embodiment, the second recess 54 that functions as a discharge passage that discharges the compressed fluid and communicates the separation chamber 62 and the discharge chamber 64 with respect to the back surface 22 a of the fixed scroll 22. By processing into a groove shape, it becomes possible to easily form the second recess 54 compared to the case where a passage is formed in the fixed scroll 22 by drilling or the like. Workability can be improved.

  Further, the separation chamber 62 and the discharge chamber 64 can be communicated with each other through the second recess 54 only by joining the fixed scroll 22 and the rear housing 14. The complicated work for making it communicate with 64 is unnecessary, and the assembly | attachment property of the scroll compressor 10 can be improved.

  Further, in contrast to the conventional scroll type compressor in which the flow passage is provided in the fixed scroll 22, the second recess 54 functioning as a discharge passage is provided in the back surface 22 a in a groove shape in the axial direction of the fixed scroll 22. Therefore, the fixed scroll 22 can be made smaller and lighter than a conventional scroll compressor.

  Furthermore, first to third boundary walls 174, 176, 178 and an annular wall 180 are formed in the rear housing 14 along the axial direction of the rear housing 14, and the discharge chamber 40, the separation chamber 62, the oil storage tank are formed. The chamber 80, the discharge chamber 64, and the filter chamber 88 are divided. Since the first to third boundary walls 174, 176, 178 and the annular wall 180 are formed in a rib shape in the rear housing 14, the rigidity of the rear housing 14 can be improved.

  Furthermore, the gasket 38 is provided with a first partition wall portion 204 that seals the discharge chamber 64 and a second partition wall portion 206 that seals the separation chamber 62, thereby providing a plurality of corresponding to the discharge chamber and the separation chamber. Compared to the case where the sealing members are provided, the discharge chamber 64 and the separation chamber 62 can be sealed with a single gasket 38. Therefore, the number of parts and the manufacturing cost can be reduced, and the assembling property can be improved.

  Furthermore, the discharge chamber 64 is provided with an open valve 89 that opens when the pressure of the fluid in the discharge chamber 64 exceeds a predetermined value. That is, as compared with a conventional scroll compressor in which an opening valve is provided in the discharge chamber 40 communicating with the compression chamber 110, an opening valve 89 is provided in the discharge chamber 64 where the fluid pressure is more stable with respect to the discharge chamber 40. As a result, it is possible to prevent malfunction of the open valve 89 due to a sudden change in pressure of the fluid, and to reliably operate the open valve 89 at a predetermined pressure. As a result, the pressure in the discharge chamber 64 can be reliably maintained at a predetermined pressure value via the release valve 89, and excessive fluid is discharged from the discharge port 18 through the discharge chamber 64. Can be prevented.

  Furthermore, since the separation chamber 62 is disposed in the rear housing 14 at a position adjacent to both the discharge chamber 40 and the discharge chamber 64, the separation distance between the separation chamber 62 and the discharge chamber 40, A separation distance from the discharge chamber 64 is reduced, and first and second introduction passages 182 and 184 that connect the separation chamber 62 and the discharge chamber 40, and a second recess 54 that connects the separation chamber 62 and the discharge chamber 64. Can be set as short as possible. As a result, it is possible to reduce the number of steps for processing the first and second introduction passages 182, 184 and the second recess 54, and to reduce the manufacturing cost.

  In the scroll compressor 10 described above, the case where the discharge chamber 64 into which the fluid from the separation chamber 62 is introduced is formed in a space having a predetermined capacity along the axial direction of the rear housing 14 has been described. The discharge chamber 64 is not limited to the case where it is formed in such a space shape, and may simply be a passage shape communicating between the separation chamber 62 and the discharge port 18.

  Next, a modified example of the oil separation pipe provided on the back surface 22a of the fixed scroll 22 will be described. The same components as those of the scroll compressor 10 according to the present embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 16, in the oil separation pipe 250 according to the first modified example, a circular recess 252 into which the flange portion 68 of the oil separation pipe 250 can be inserted is provided on the rear housing 14 side, and the circular recess 252 has the above-mentioned With the flange portion 68 inserted, a gasket 38 is brought into contact with the end surface of the flange portion 68 and is sandwiched between the rear housing 14 and the fixed scroll 22.

  With this configuration, there is no need to provide a fixing means for fixing the oil separation pipe 250 to the fixed scroll 22 or the rear housing 14, and the oil separation pipe 250 is disposed between the fixed scroll 22 and the rear housing 14. And can be held easily and reliably.

  In the oil separation pipe 260 according to the second modification, the oil separation pipe 260 is formed integrally with the gasket 262 as shown in FIG. Specifically, a portion of the gasket 262 that faces the separation chamber 62 is projected in a cylindrical shape toward the separation chamber 62 side.

  With this configuration, the gasket 262 and the oil separation pipe 260 can be configured from a single component, so that the number of components in the scroll compressor 10 can be reduced, and the gasket 262 can be The oil separation pipe 260 can be reliably disposed at a position facing the separation chamber 62 only by a simple operation of being sandwiched between the fixed scroll 22 and the rear housing 14.

1 is an overall longitudinal sectional view of a scroll compressor according to an embodiment of the present invention. FIG. 2 is a partially omitted exploded perspective view of the scroll compressor of FIG. 1. It is the top view which looked at the fixed scroll in the scroll compressor of Drawing 2 from the fixed side spiral wall side. It is a longitudinal cross-sectional view which shows the movable scroll, fixed scroll, gasket, and rear housing in the scroll compressor of FIG. FIG. 2 is an exploded perspective view in which the fixed scroll and the rear housing of FIG. It is the top view seen from the back side to which the gasket in a fixed scroll is mounted | worn. FIG. 7 is an exploded perspective view showing a state where an oil separation pipe is detached from the back surface of the fixed scroll of FIG. 6. It is a longitudinal cross-sectional view which shows the state which attached the oil separation pipe | tube to the circular recessed part of the fixed scroll, and was clamped between the said fixed scroll and the rear housing via the gasket. It is a longitudinal cross-sectional view which shows the state by which the oil separation pipe which concerns on the modification was fixed to the fixed scroll via the fixing bolt. It is a top view of the rear housing seen from the joint surface side where a gasket is mounted | worn. It is a top view which shows the state which mounted | wore with the gasket with respect to the joint surface of the rear housing, and overlapped the 1st-4th recessed part and the lead-out hole of the fixed scroll. It is a longitudinal cross-sectional view which shows the relationship between the separation chamber, the lead-out passage, and the throttle hole of the gasket in a state where the fixed scroll, the gasket and the rear housing are assembled. It is sectional drawing along the XIII-XIII line | wire of FIG. 14A and 14B are cross-sectional views showing the valve open / closed state of the safety valve along line XIV-XIV in FIG. It is the top view which looked at the gasket from the fixed scroll side. It is an expanded longitudinal cross-sectional view which shows the state with which the oil separation pipe concerning the 1st modification was mounted | worn between a gasket and the rear housing. FIG. 10 is an enlarged longitudinal sectional view showing a state in which an oil separation pipe according to a second modification integrally formed with a gasket is mounted between a fixed scroll and a rear housing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Scroll type compressor 12 ... Front housing 14 ... Rear housing 16 ... Intake port 18 ... Discharge port 22 ... Fixed scroll 22a ... Back surface 24 ... Movable scroll 26 ... Fixed side board | substrate part 28 ... Fixed side spiral wall 30 ... Guide path 32 ... oil supply hole 34 ... supply passage 36 ... dam walls 38 and 262 ... gasket 40 ... discharge chamber 42 ... outlet hole 44 ... discharge valves 52, 52a, 250, 260 ... oil separation pipes
60, 252 ... circular recess 62 ... separation chamber
64 ... discharge chamber 66 ... cylinder
68 ... Flange 80 ... Oil storage chamber
82 ... 1st communication path 84 ... 2nd communication path
86 ... Filter 88 ... Filter room
89 ... Release valve 90 ... Oil supply groove
106: Movable side substrate part 108: Movable side spiral wall
110 ... Compression chamber 116 ... Rotating shaft
124 ... Support 128 ... Pin
134 ... bush 158 ... pulley
160 ... Electromagnetic clutch 172 ... Joint surface
182 ... First introduction passage 184 ... Second introduction passage
186 ... Derivation passage 194a ... Third introduction passage
194b ... Fourth introduction passage 196 ... Discharge opening
198 ... Oil storage opening 200 ... Discharge opening
202 ... Separation opening 204 ... First partition
206: Second partition 208: Filter opening
210: third partition 212: restricting hole
214 ... Bead

Claims (5)

A discharge chamber formed between the fixed scroll and the housing and from which a fluid compressed under the swirling action of the movable scroll meshed with the fixed scroll is led out, and is contained in the fluid in communication with the discharge chamber. In a scroll compressor comprising a separation chamber that separates the lubricating oil, and an oil storage chamber that communicates with the separation chamber and stores the lubricating oil.
A discharge chamber formed in the housing, into which the fluid from which the lubricating oil is separated is introduced in the separation chamber, and in communication with a discharge port for discharging the fluid to the outside;
A dividing wall extending along the axial direction of the housing and dividing the discharge chamber, the separation chamber and the discharge chamber,
A sealing means disposed between the fixed scroll and the housing and sealing the separation chamber and the discharge chamber;
A communication path formed on a joint surface of a fixed scroll joined to the housing and disposed to face the separation chamber and the discharge chamber;
With
The separation chamber is provided with a discharge port that opens to the fixed scroll side and discharges the fluid, and the discharge port and the discharge chamber communicate with each other through the communication path. Compressor. The scroll compressor according to claim 1, wherein
The scroll compressor according to claim 1, wherein the separation chamber is disposed at a position adjacent to both the discharge chamber and the discharge chamber in the housing. In the scroll compressor according to claim 1 or 2,
The scroll type compressor is characterized in that the sealing means includes a gasket having a first sealing portion for sealing the discharge chamber and a second sealing portion for sealing the separation chamber. In the scroll compressor according to any one of claims 1 to 3,
The scroll compressor according to claim 1, wherein a safety valve that opens when the pressure of the fluid in the discharge chamber exceeds a predetermined value is disposed in the discharge chamber. In the scroll compressor according to any one of claims 1 to 3,
The scroll compressor according to claim 1, wherein the discharge port is provided in an oil separation member having a pipe portion inserted into the separation chamber and a flange portion held between the fixed scroll and the housing.

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