JPS60135684A - Scroll compressor - Google Patents

Abstract

PURPOSE:To smoothen the supply of lubricating oil to respective sections of a revolution guide mechanism and improve sealing property by a method wherein a suction port is opened at a position in a direction parallel to respective center lines of movable and fixed scrolls so as to be astride over the movable scroll and the revolution guide mechanism. CONSTITUTION:Refrigerant gas, sucked from the suction port 70 into a housing 10 and containing the lubricating oil, is sucked into a compression chamber through a clearance between walls 30, 24 and is compressed, thereafter, is discharged out of a delivery port 72. In this case, the suction port 70 is opened so as to be astride over the movable scroll 20 and the revolution guide mechanism 56, therefore, a part of the lubricating oil, contained in the refrigerant gas, is introduced inbetween the movable scroll 20 and the fixed scroll 18 to effect lubricating and sealing effects for the sliding and contacting sections of both parts. The balance of the lubricating oil is introduced to the side of the revolution guide mechanism 56 and sufficient lubricating oil may be supplied to the mechanism 56.

Description

Detailed Description of the Invention Technical Field The present invention (first invention and second invention) compresses gas through relative movement between a fixed scroll having a spiral wall and a movable scroll housed in a housing. The present invention relates to scroll compressors, and particularly to techniques for improving their lubricity and sealing properties.

Background of the First Invention Generally, in a scroll compressor, a fixed scroll having a spiral wall portion and a movable scroll are combined in a housing with their center lines eccentric to each other, and the movable scroll is opposite to the fixed scroll. It is guided by a revolution guide mechanism provided on the side and is caused to revolve around the center line of the fixed scroll without rotating. The spiral walls of the fixed scroll and the movable scroll are substantially in contact with each other at multiple points to form an airtight compression chamber, and lubricating oil is supplied to the compression chamber from the suction hole provided in the housing. Normally, the compressed gas is sucked in, and as the movable scroll revolves, its compression chamber is sequentially moved toward the center and its volume is reduced, and the compressed gas is discharged from the center. It is.

The sealing and lubrication of the sliding contact between the fixed scroll and the movable scroll, the lubrication of the revolution guide mechanism, etc. often depend on the lubricating oil contained in the intake gas.

Conventionally, in the scroll compressor described above, the suction hole that guides gas into the housing is located at the front side of the housing.
In other words, the movable scroll is formed on the opposite side of the fixed scroll. In this type of scroll compressor, the orbiting guide of the movable scroll I! The lubricity of the grooves is maintained relatively well, but since the suction hole is located far from the fixed scroll and movable scroll combination (scroll combination), the water is not supplied to the scroll combination. Should Junli&
The amount of pressure tends to be insufficient, and especially when the compressor is operating at low speed, the sealing performance of the sliding contact portion of the scroll assembly may be insufficient.

On the contrary, there are some models in which the suction hole is formed on the -1 side of the housing, that is, on the fixed scroll side, but this makes it difficult to supply sufficient lubricant to the revolving guide mechanism. . Furthermore, as another type, a suction hole is formed at a position corresponding to the side of the housing, that is, the side of the scroll combination part. In this type, the absorption hole is located close to the sliding contact part of the scroll, so sufficient lubricating oil can be supplied to the sliding contact part, but as with the type with the suction hole on the rear side, It is difficult to supply sufficient lubricating oil to the orbiting guide mechanism of the movable scroll.

Purpose of the First Invention Against the background of the above-mentioned circumstances, the first invention provides a method for aligning the combined portion of both scrolls (more precisely, the sliding contact portion thereof) and for the revolution guide mechanism of the movable scroll. This was done for the purpose of providing a scroll compressor that can supply sufficient lubricating oil.

Structure of the First Invention The gist of the first invention is that, in the scroll compressor as described above, the suction hole is arranged to straddle the movable scroll and the revolution guide mechanism in a direction parallel to the center line of the movable scroll. It is at the point where it is opened to the desired position.

Effects of the First Invention With this structure, the gas containing lubricating oil supplied from the suction hole into the housing is not only directly sucked into the compression chamber between both scrolls, but also directly into the revolution guide mechanism side. flows. Therefore, sufficient lubricating oil is supplied to the sliding contact portion of the combined portion of the fixed scroll and the movable scroll to ensure sealing and lubricity there, and /rJIli& oil is also supplied to the revolving kite mechanism. This allows for sufficient lubrication.

Background of the Second Invention By the way, in a scroll compressor, in order to make the movable scroll revolve around the center line of the fixed scroll while preventing rotation, the center of the movable scroll is placed on the opposite side of the fixed scroll with the movable scroll in between. Normally, a support wall is provided that partitions the housing at right angles to a line, and the revolution guide mechanism is provided between the support wall and the movable scroll, and a drive shaft is connected to the movable scroll. This gives the movable scroll orbital motion. The drive shaft extends to the outside of the housing while being kept airtight by a sealing device at a position on the opposite side of the movable scroll across the support wall, and is connected to a drive source at its protruding end. It is desirable to supply lubricating oil contained in the suction gas to the sealing device to enhance its sealing effect.

A second object of the invention is to provide a scroll compressor capable of supplying sufficient lubricating oil to the seal device.

Structure of the second invention The second invention provides a housing as described above, a movable stopper 11-
le, fixed scroll, supporting wall and sealing device ()#
This scroll compressor is similar to the first invention in that the suction hole is opened at a position straddling the movable scroll and the revolving guide mechanism, but in addition, the suction hole is opened in the vicinity of the suction hole of the support wall. A communication hole is formed in the portion where the spaces on both sides of the support wall are communicated with each other, and a suction hole is formed in a portion of the opening periphery on the movable scroll side of the communication hole on the side far from the suction hole. Moisture inhaled from? i! The gist of the present invention is to provide a baffle plate that obstructs the flow of gas containing f oil and guides a portion of the gas through the communication hole to the space on the sealing device side.

Effects of the second invention According to the second invention, the effect of the first invention, that is, the supply of lubricating oil to the combination of the fixed scroll and the movable scroll and the revolution guide mechanism can be achieved. A flow of gas containing lubricating oil is generated in the space on the opposite side of the supporting wall through the baffle plate and communication hole, and therefore it is possible to effectively supply lubricating oil to the sealing device. Therefore, the sealing performance there can be improved. As a result, all of the sliding contact portion of the scroll assembly, the revolution guide mechanism, and the seal device can receive good lubrication.

EXAMPLES Hereinafter, examples in which the first invention and the second invention are applied to a scroll compressor for compressing refrigerant gas of a vehicle air conditioner will be described in detail with reference to the drawings.

The scroll compressor housing 10 shown in FIG.
6 to form an integral housing 10.

A fixed scroll 18 and a movable scroll 20 are housed within the housing IO. Fixed scroll 18
The housing includes a circular base plate 22 and a spiral wall portion 24 extending perpendicularly from the front side surface of the base plate 22, and is fixed to the rear housing 14 by a port 26 at the base plate 22. ing. On the other hand, the movable scroll 2o also has the same shape as the fixed scroll 18, and has a circular substrate 2o.
8 and a spiral wall portion 30 that stands perpendicularly from the rear side surface of the substrate 28, and the wall portion 3° is a second wall portion 30.
As is clear from the figure, the center line O1 of the fixed scroll 18 and the movable scroll I7-20 are in contact with or very close to the wall portion 24 of the fixed scroll 18 at multiple locations.
are intertwined so that their center lines o2 are eccentric to each other. Note that seal portions 32 are provided on the end surfaces of the wall portions 24 and 3o of both scrolls 18 and 20, respectively, and are adapted to come into sliding contact with the inner surface of the opposing substrate 2B or 22.

As shown in FIG. 1, on the opposite side of the fixed scroll 18 with the movable scroll 20 in between, the housing 10 is placed along the center line 0. ．． Fixed play 1 partitioning in the direction perpendicular to 02
・34 is provided. These fixed plays 1 to 34 are fixed by bolts 36!・This fixed plate 1.34 is fixed to the housing 12 and forms a supporting wall 7.
can also be seen as part of the housing 10.

The movable scroll 20 is located close to the fixed plate 1-34, on the lee 1 side thereof, and is driven by a drive shaft 38. This drive shaft 38 is provided concentrically with the fixed scroll 18 and is rotatably held by the front housing 111 via ball hair rings 7IO and 42. One end of the drive shaft 38 protrudes to the outside while being kept airtight with the front housing 12 by a mechanical sealing device (shaft seal) 44, and is connected to the engine via an electromagnetic clutch at the protruding end. However, the eccentric pin 4G and balance ways 1 to 48 are integrally provided at the inner end. The eccentric pin 46 is eccentrically offset from the main body of the drive shaft 48 by an amount equal to the eccentricity of the fixed flow rate 8 and the movable scroll 20, and is attached to an opening formed in the center of the fixed plate I.34. 5
The eccentric pin 46 has a boss portion 5 formed at the center of the substrate 28 of the movable scroll 2o.
2 are connected to each other via a knee/pull 54 so that they can rotate relative to each other. Therefore, the eccentric pin 46 and the movable scroll 20 are maintained in a concentric state, and when the drive shaft 38 is rotated, the movable scroll 2o is caused to revolve around the rotation center line of the shaft 38 by the eccentric pin 46.

Between the fixed play 1/34 and the movable scroll 2o,
A revolution guide mechanism 56 is provided that guides the revolution of the movable scroll 20 while preventing it from rotating. That is, as is clear from FIG. 3, shallow and wide guide grooves 58 are formed on the plate surfaces of the movable scrolls 20 of the fixed plates 1 and 34, while the fixed plate of the base plate 28 of the movable scroll 20 34, a similar guide groove 60 is formed in a direction orthogonal to the guide groove 58, and a rectangular ring body 62 is disposed astride both of these guide grooves 58 and 60. , those guide grooves 58
and 60, and the ring body 62 etc. are the above-mentioned revolution guide mechanism 5.
6.

The two parallel sides of the ring body 62 are slidably engaged with the guide grooves 58 of the fixed plates 1 and 34, and the remaining two parallel sides are slidably engaged with the kite groove 6O of the movable scroll 20. Therefore, when the movable scroll 20 is revolved, the annular body 62 moves into the guide groove 58.
．． It slides within the movable frame 60 and moves relative to each other in two directions perpendicular to each other, thereby guiding the revolution of the movable frame 20 while preventing it from rotating on its own axis (rotation around its own center line 0□).

This movable scroll 20 cooperates with the fixed scroll 18 to form a compression chamber. That is, as shown in FIG. 2, the spiral wall portion 30 of the movable scroll 18 is in contact with or very close to the spiral wall portion 24 of the fixed scroll 18 at multiple locations as described above. There are a plurality of toe-shaped compression chambers 64a bordering the contact area.

64b, 66a, 66b and 68a, 68b are formed. In the state shown in FIG. 2, the compression chambers 64a and 64. b are in communication with each other, and the compression chambers 66a and 66b are independent from each other,
Both are in a volume reduction stroke, that is, a compression stroke. On the other hand, the compression chamber 68a.

68b is in a suction stroke without a volume increase stroke in which the outer peripheral end is still closed. In each of these compression chambers, the center o2 of the movable scroll 2o extends around the center Oi of the fixed scroll 18 by half 1'! Circular at 50 t O2! lL
When it revolves around its axis without making a trace, the compression chamber 68a moves toward the center of the contact area between the walls 24 and 30.
, 68b, the state of the compression chambers 66a, 66b, and then the state of the compression chambers 64a, 64b. Accordingly, the volume of each compression chamber increases at one point and sucks refrigerant gas from the surrounding space through the suction hole 70, and then the volume decreases while moving toward the center and compresses the refrigerant gas, and the discharge boat 72
Discharge from.

The discharge boat 72 is formed at the center of the substrate 22 of the fixed scroll 18, and a reed-type discharge valve 74 is provided at the opening on the discharge side to prevent backflow of gas. A discharge chamber 76 is formed on the rear side of the fixed scroll 18, and the refrigerant gas discharged here is further sent out to the external circulation circuit through a discharge hole 78.

The suction hole 70 is connected to the pipe line of the external circulation circuit, and the suction hole 70 is connected in a direction parallel to the center lines of the movable scroll 20 and the fixed scroll 18, respectively.
It is opened at a position straddling the movable scroll I8 and the revolution guide mechanism 56. That is, the suction hole 70 is formed by penetrating the side wall of the rear housing 14 in a direction perpendicular to the center line, and when the inner opening is projected inward, approximately half of the suction hole 70 is formed by penetrating the side wall of the rear housing 14 in a direction perpendicular to the center line.
8 side wall 30 (in other words, the gas suction part of the compression chamber formed between the movable scroll 20 and the fixed scroll 18), and the remaining half is projected on the wall 30 of the movable scroll 20 and the fixed plate 34. It is projected onto the guide grooves 58 and 60 and further onto the annular body 62 through the space between them.

In the scroll compressor configured as described above, when the rotating scroll 20 is caused to revolve around the center line O1 of the fixed scroll 18 by the rotation of the drive shaft 38 while being prevented from rotating by the revolution guide mechanism 56, Refrigerant gas containing lubricating oil sucked into the housing 10 from the suction hole 7O flows from between the walls 30 and 24 into the compression chamber 68a,
68b, and is compressed as described above and discharged into the discharge bowl 1.
・Since the suction hole 70 is opened so as to straddle the movable scroll 20 and the revolution guide mechanism 56, some of the lubricating oil contained in the refrigerant gas is discharged from the refrigerant gas directly. movable scroll 20 and fixed scroll 1
The remaining portion is guided between the ring body 62 and the sliding parts of the guide grooves 58 and 60 and is guided to the side of the revolution guide mechanism 56 to provide lubrication and sealing for the sliding parts on both sides. Sufficient lubricating oil is supplied to perform the lubrication action there as well.

Scroll compressors installed in automobiles are generally operated in a wide rotational speed range because they are driven by an engine.

When operating at a low rotational speed, the flow rate of the refrigerant gas sucked through the suction hole 70 is relatively slow, and the lubricating oil that should be contained in the gas in the form of mist flows through the suction hole 70 as conceptually shown in FIG. It tends to adhere to the inner wall surface of the housing 10 and flow into the housing 10 along the inner wall surface due to the flow of refrigerant gas. Therefore, if the suction hole 70 is located far from the sliding contact area of both scrolls 18 and 20, it is difficult for the lubricating oil to spread to the sliding contact area, and the sealing performance required especially in the low speed rotation range is reduced. However, in this embodiment, the wall portion 2 of both scrolls 18 and 20 is placed directly below the peripheral wall surface on one side of the suction hole 70.
4 and 30, the liquid lubricating oil dripping from the inner wall surface of the suction hole 70 maintains sufficient sealing properties at the sliding contact portions of both scrolls 18 and 20, and also prevents the rotation of the scrolls 18 and 20. The fixed plate 3 is also attached to the guide mechanism 56.
Sufficient lubricating oil is supplied along the wall surface of the suction hole 70 or drips directly from the lower edge of the inner wall surface of the suction hole 70.

On the other hand, when the compressor is operated at a high rotational speed, as conceptually shown in Figure 5, much of the lubricating oil contained in the refrigerant gas becomes mist and is carried along with the gas flow. In that case, mainly mist-like lubricating oil is supplied to both the scroll sliding contact portion and the revolving kite mechanism 56, and the lubricity particularly required during high-speed operation is maintained satisfactorily. The refrigerant gas containing lubricating oil led to the side of the revolving guy F mechanism 56 will be sucked into the compression chambers 68a, 68b of both scrolls 18, 20 after lubricating it. Furthermore, the lubricating oil guided to the scroll sliding contact portion and the revolution guide mechanism 56 serves not only to cool the hot water but also to cool it.

The embodiment described above is an embodiment of the first invention, and next, the embodiment of the second invention will be explained based on FIGS. 6 to 8, and the same parts as the embodiment of the first invention will be explained. are given the same reference numerals to indicate the correspondence, and the explanation will be omitted.

As shown in FIG. 6, in this embodiment as well, the suction hole 70
is opened at a position that straddles the movable scroll 20 and the revolution guide mechanism 56, and the fixed play 1. A communication hole 80 is formed that passes through the plate in the thickness direction, and this communication hole 80 sandwiches the fixed plate 34 and allows the spaces on both sides to communicate with each other.

The base plate 28 of the movable scroll 20 is connected to the opening periphery of the movable scroll 20 of the communication hole 80 at a position far from the suction hole 70 from the plate surface of the fixed plate 34.
A baffle plate 82 in the form of a projecting wall is formed toward the front. This baffle plate 82 extends along the wall surface of the fixed plate 34 in a direction perpendicular to the center line of the suction hole 7O, and as is clear from FIG. It also serves as a guide rail for guiding one side of 62. That is, the movable scroll 20 of the fixed plate 34
A guide rail 8 is installed on the side wall parallel to the baffle plate 82.
4 are integrally formed, and two mutually parallel sides of the ring body 62 are slidably guided by these baffle plates 82 and guide rails 84. In other words, the baffle plate 82 in this embodiment is formed by a part of the revolution guide mechanism 56, but strictly speaking, the portion located near the opening periphery of the communication hole 80 is the original baffle plate. fulfill a function. The surface of the baffle plate 82 facing the suction hole 70 serves as a wind guide surface 86 that obstructs the flow of refrigerant gas containing lubricating oil flowing from the suction hole 70 and guides it toward the communication hole 80. , the opposite surface serves as a guide 88 for guiding the ring body 62.

A guide passage 90 is formed in the front housing I2 continuous with the communication hole 80, and the sealing device 44 is positioned in the middle of this guide passage 90. Furthermore, as is clear from FIG.
- Two introduction holes 92 are formed that penetrate through 34 and communicate with the space on the movable scroll 20 side, and the baffle plate 82
They are arranged to occupy positions symmetrical to each other with respect to the centers of the fixed plays 1 and 34 in a direction parallel to the fixed plays 1 and 34.

In the scroll compressor configured as above,
As is clear from FIG. 8, the refrigerant gas containing moisture sucked through the suction hole 70 flows toward the compression chamber between the movable scroll 20 and the fixed scroll 18, and flows toward the revolution guide mechanism 56. A part of the flow toward the revolving guide tffiLW 56 hits the air guide surface 86 of the baffle plate 82 and is redirected toward the communication hole 80, and part of the refrigerant gas containing lubricating oil Through the communication hole 80 and the guide passage 90, it is guided to the sealing device 44 side shown in FIG. . The lubricating oil and refrigerant gas that have passed through this sealing device 44 pass through the gaps between the balls of the ball hair ring 42 and reach the balance weight 48 side, and the movable scroll 20
It is guided to the outer peripheral side by the pressure difference between the side and the balance weight 48 side, and is sucked into the space on the movable scroll 20 side through the introduction holes 92. is inhaled.

As is clear from the above description, in this embodiment, since the communication hole 80 and the baffle plate 82 are provided near the suction hole 70, lubricating oil is effectively supplied to the scroll sliding contact portion and the revolution guide mechanism 56. At the same time, sufficient moisture is also supplied to the sealing device 44 located on the opposite side of the fixed plates 1 and 34, and its sealing performance is improved.
This increases durability.

Furthermore, another embodiment of the second invention will be described with reference to FIG. 9. In this embodiment, the communication hole 8° is inclined so as to approach the harraging side opening of the suction hole 70, and the air guide surface 86 of the baffle plate 82 is also inclined at an angle of 8°. It is tilted in a direction parallel to the centerline. In this way, there is an effect that the refrigerant gas containing lubricating oil sucked from the suction hole 70 is easily guided to the communication hole 80 and further to the sealing device 44 side.

Further, as shown in FIG. 10, it is also possible to provide a baffle plate 82 having a semi-cylindrical air guide surface 86 continuous to the opening periphery of the movable scroll 20 of the communication hole 80.

Furthermore, the baffle plate 82 does not also serve as a guide rail for guiding the ring body 62, in other words, it is not constituted by a part of the revolution guide mechanism 56, but is
As shown in the figure, separate from the revolution guide mechanism 56, a dedicated baffle plate 82 may be formed integrally with the fixed plays 1 and 34.

In addition to forming the baffle plate 82 integrally with the fixed plate 1 and 84, the baffle plate 82 may be formed integrally with a temporary baffle member 9 as shown in FIG.
4 may be press-fitted into the communication hole 80 at its cylindrical portion, and the semi-cylindrical baffle plate 82 may protrude from the opening peripheral portion of the communication hole 80.

Further, as shown in FIG. 13, a baffle plate 82 having a partial Taber cylindrical shape is obtained by cutting a Taber cylindrical portion with an increasing diameter at the tip along a cutting plane parallel to its center line.
The cylindrical portion of the baffle plate forming member 94 can also be press-fitted into the communication hole 80.

It should be noted here that the name baffle plate is commonly used to refer to its function of blocking the flow of fluid, and this specification also follows this convention. The refrigerant gas does not necessarily have to have a plate-like shape, but rather has an air guide surface that can obstruct the flow of refrigerant gas containing lubricating oil and guide a part of it to the communication hole 80 side. If so, the goal will be achieved.

Furthermore, regarding the revolution guide mechanism, the mechanism that is equipped with the rectangular ring body 62 as in the embodiments described so far is invariably made up of a circular ring body 96 as shown in FIG. 14, for example. It may be a mechanism. This ring body 96 has guide projections 9.8 along the radial direction on one side.
．． 98, and guide protrusions 100, 100 are provided on the opposite surface along a straight line perpendicular to the guide protrusions 98, and the guide protrusions 98, 98 are formed on the base plate 28 of the movable scroll 20. In the groove, there is also a guide protrusion 100. ．． 100 are slidably engaged with guide grooves formed in the plate surfaces of the fixed plates 1 and 34, respectively.

Furthermore, regarding the suction hole 70, as shown in FIG.
Even if the opening on the housing IO side is formed so as to straddle the movable scroll 20 and the revolution guide mechanism 56, the object of the present invention can be achieved.

Also, regarding the fixed plate 34,
It may be formed integrally with the housing 12 or the carrier housing 14.

In addition, although detailed explanations will be omitted, the present invention may be modified in various ways based on the knowledge of those skilled in the art, without departing from the scope of the claims. Of course, it is possible to implement C:1.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a vertical sectional view of a scroll compressor which is an embodiment of the first invention, and FIG.
FIG. FIG. 3 is an exploded perspective view showing the revolution guide mechanism of the scroll compressor shown in FIG. 1. 4 and 5 are partial sectional views showing the function of the scroll compressor shown in FIG. 1, with FIG. 4 showing the state during low speed operation, and FIG. 5 showing the state during high speed operation. Each state is conceptually shown. FIG. 6 is a longitudinal sectional view of a scroll compressor which is an embodiment of the second invention, and FIG. 7 is an exploded perspective view showing the revolution guide mechanism therein. FIG. 8 is a partial sectional view showing the function and effect of the scroll compressor shown in FIG. 6, and FIG. 9 is a partial sectional view showing the main parts of another embodiment of the second invention. Figure 10 and 1
FIG. 1 is a partial perspective view showing different aspects of the baffle plate, and FIGS. 12 and 13 are perspective views showing specific examples of the baffle plate forming member, respectively. FIG. 14 is a perspective view showing main members constituting a revolution guide mechanism different from the revolution guide mechanism shown in FIGS. 3 and 7;
The figure is a partial sectional view showing another form of the suction hole in a simple manner. 10: Housing 12: Front housing I4: Rear housing I8: Fixed scroll 20: Movable scroll 22.28: Substrate 24, . 30: Wall portion 34: Fixed play 1 (support wall) 38: Drive shaft 44: Seal device 56: Revolution guide mechanism ss, 6o guide groove 62: Annular body 64a=b, 66a-b, 68a-b: Compression chamber 70: Suction hole 80: Communication hole 82: Baffle plate 86: Air guide surface 90: Guide passage 92: Introduction hole 94: Baffle plate forming member Applicant: Toyota Industries Corporation =. Figure 8 Figure 9 Figure 10 Figure 11 Figure 15

Claims (3)

[Claims] (1) In a housing, a fixed scroll having a spiral wall portion and a movable scroll are combined with each other in a state where their center lines are eccentric, and the movable scroll has a revolution guide provided on the opposite side of the fixed scroll. By being guided by the mechanism and revolving around the center line of the fixed scroll without rotating, lubricating oil is contained in the compression chamber formed between the fixed scroll and the suction hole provided in the housing. A scroll compressor that sucks in and compresses gas, characterized in that the suction hole is opened at a position that straddles the movable scroll and the revolution guide mechanism in a direction parallel to the center line of the movable scroll. scroll compressor. (2) Inside the housing, a fixed scroll having a spiral wall and a movable scroll are combined with their center lines eccentrically arranged, while the center is located on the opposite side of the fixed scroll with the movable scroll in between. A support wall is provided that partitions the housing substantially perpendicularly to the line, and the movable scroll is engaged with a revolution guide mechanism provided between the support wall and the movable scroll is opposite to the movable scroll with the support wall in between. The movable scroll is connected to the inner end of a drive shaft that extends to the outside of the housing while being kept airtight by a sealing device at a side position, and the movable scroll rotates around the center line of the fixed scroll to the revolution guide mechanism by the drive shaft. A scroll that sucks and compresses gas containing lubricating oil from a suction hole provided in the housing into a compression chamber formed between the scroll and the fixed scroll as it revolves while being guided while being prevented from rotating. In the compressor, the suction hole is opened at a position spanning the movable scroll and the revolving guide mechanism in a direction parallel to the center line of the movable scroll, and a portion of the support wall adjacent to the suction hole is opened. A communication hole is formed that communicates the space on both sides of the support wall, and the suction is sucked from the suction hole into a portion of the opening periphery on the movable scroll side of the communication hole on the side far from the suction hole. A scroll compressor comprising a baffle plate that obstructs the flow of gas containing lubricating oil and guides a portion of the gas through the communication hole to the space on the sealing device side. (3) The scroll compressor according to claim 1, wherein the baffle plate is formed by a part of the revolution guide mechanism.