CN112128099A

CN112128099A - Scroll compressor having a plurality of scroll members

Info

Publication number: CN112128099A
Application number: CN201910554710.1A
Authority: CN
Inventors: 张跃; 钱源; 梁计
Original assignee: Emerson Climate Technologies Suzhou Co Ltd
Current assignee: Copeland Suzhou Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-12-25

Abstract

The present invention provides a scroll compressor (100), the scroll compressor (100) comprising: a housing (110); a non-orbiting scroll member (150) disposed within the housing (110); a partition plate (116) for partitioning an inner space of the case (110) into a high pressure side and a low pressure side; a seal assembly (S) disposed between the divider plate (116) and the non-orbiting scroll member (150), the seal assembly (S) comprising: an upper plate (S1), an upper end of the upper plate (S1) including a first sealing surface (SS1), a lower end of the divider plate (116) having a second sealing surface (SS2), the first sealing surface (SS1) sealingly engaging the second sealing surface (SS2) to limit radial movement of the seal assembly (S). The seal assembly (S) can avoid abrasion of a seal surface, obtain a good sealing effect and enable the seal assembly to be quickly unloaded and dropped.

Description

Scroll compressor having a plurality of scroll members

Technical Field

The present invention relates to a scroll compressor.

Background

A scroll compressor generally includes a compression mechanism composed of a fixed scroll member and a movable scroll member. Typically, a recess is formed in the end plate of the non-orbiting scroll member and a seal assembly is disposed in the recess. The recess is in fluid communication with one of a series of compression chambers formed between the non-orbiting and orbiting scroll members. The recess cooperates with the seal assembly to form a back pressure chamber that provides back pressure to the non-orbiting scroll member. The upper end face of the seal assembly is a planar form of the sealing surface which may abut an insert on the divider plate or an undersurface of the divider plate to effect a seal.

Under actual working conditions, the fixed scroll part generates micro vibration, so that the sealing assembly arranged in the concave part of the fixed scroll part is pushed to follow the generated micro vibration, and the abrasion of the sealing surface of the sealing assembly is caused. In addition, under actual operating conditions, the sealing position varies with operating conditions, and the effective sealing surface is not the entire sealing surface of the seal assembly that contacts the insert. Especially under the working conditions of maximum pressure difference and high pressure load, the contact positions generally respectively appear at the inner side and the outer side of the sealing surface, and the effective contact area is smaller, so that the sealing effect is reduced.

To avoid wear of the sealing surfaces and to maintain a good sealing effect. It is common to increase the contact force of the sealing surface. If the contact force of the sealing surface is increased by the larger area of the middle pressure cavity, the thrust load is too large, and the thrust plate can be damaged; if the contact force of the sealing surface is increased by a larger area of the high-pressure cavity, then under the condition of high-pressure load, the partition plate is easy to deform upwards and the strength risk of the sealing assembly is easy to cause, and the sealing assembly is difficult to unload and drop quickly.

Therefore, there is a need for a seal assembly that avoids wear of the sealing surfaces, achieves a better sealing effect, and allows the seal assembly to be quickly unloaded and dropped.

Disclosure of Invention

It is an object of one or more embodiments of the present invention to provide a seal assembly that avoids wear of the sealing surfaces, achieves a better sealing effect and allows the seal assembly to be quickly unloaded and dropped.

According to one aspect of the present invention, there is provided a scroll compressor including: a housing; a non-orbiting scroll member disposed within the housing; a divider plate disposed within the housing and adjacent to the non-orbiting scroll member for dividing an interior space of the housing into a high pressure side and a low pressure side; a seal assembly disposed between the divider plate and the non-orbiting scroll member, the seal assembly comprising: an upper plate, an upper end of the upper plate including a first sealing surface, a lower end of the divider plate having a second sealing surface, the first sealing surface in sealing engagement with the second sealing surface to limit radial movement of the seal assembly. So that wear of the first and second sealing surfaces can be avoided and a good sealing effect is easily obtained. Thereby eliminating the need for increasing the contact force of the sealing surface and allowing the seal assembly to be easily and quickly unloaded and dropped.

According to one aspect of the present invention, there is provided a scroll compressor including: a housing; a non-orbiting scroll member disposed within the housing; a partition plate disposed within the casing and adjacent to the non-orbiting scroll member, for partitioning an inner space of the casing into a high pressure side and a low pressure side, wherein the partition plate is provided at a central position thereof with an insert; a seal assembly disposed between the insert and the non-orbiting scroll member, the seal assembly comprising: an upper plate, an upper end of the upper plate including a first sealing surface, a lower end of the insert having a second sealing surface, the first sealing surface in sealing engagement with the second sealing surface to limit radial movement of the seal assembly. So that wear of the first and second sealing surfaces can be avoided and a good sealing effect is easily obtained. Thereby eliminating the need for increasing the contact force of the sealing surface and allowing the seal assembly to be easily and quickly unloaded and dropped.

Preferably, the end plate of the non-orbiting scroll member has a recess formed therein, and the seal assembly further includes: a lower plate configured to fit in a recess of a non-orbiting scroll member of the scroll compressor; and an inner seal ring and an outer seal ring disposed between the upper plate and the lower plate.

Preferably, the scroll compressor further includes a regulating shim disposed radially inward of the lower plate and movable in a radial direction relative to the sealing assembly, wherein an outer diameter of the regulating shim is smaller than an inner diameter of the lower plate radially adjacent to the regulating shim, and the inner diameter of the regulating shim is smaller than an inner diameter of the lower plate axially adjacent to the regulating shim, so that it is possible to provide better assembly flexibility between the sealing assembly and the non-orbiting scroll member to prevent over-restriction.

Preferably, the adjusting shim engages the lower plate in the axial direction and axially supports the inner seal ring.

Preferably, the cross-sectional profile of the first sealing surface of the upper plate is: the oblique line, the circular arc, the curve or the involute and/or the cross-sectional profile line of the second sealing surface is: a diagonal, a circular arc, a curve or an involute.

Preferably, an inclination angle of the first sealing surface is in a range of more than 0 ° and less than 90 ° and more than 90 ° and less than 180 ° in a case where a sectional outline of the first sealing surface of the upper plate is a diagonal line, and/or an inclination angle of the second sealing surface is in a range of more than 0 ° and less than 90 ° and more than 90 ° and less than 180 ° in a case where a sectional outline of the second sealing surface is a diagonal line.

Preferably, the upper plate of the sealing assembly is provided with a groove adjacent to the radially inner and/or radially outer side of the first sealing surface, so that a better deformation coordination and a more efficient uniform contact stress between the first sealing surface of the upper plate of the sealing assembly and the second sealing surface of the insert may be achieved, thereby achieving a good seal.

Preferably, the cross-sectional shape of the groove is U-shaped, V-shaped, stepped or circular.

Preferably, the second sealing surface of the partition plate of the scroll compressor or the second sealing surface of the insert on the partition plate is form-fitted with the first sealing surface of the upper plate of the seal assembly.

Drawings

The features and advantages of one or more embodiments of the present invention will become more readily apparent from the following description taken in conjunction with the accompanying drawings. The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way, the drawings are not to scale and some features may be exaggerated or minimized to show details of particular components. In the drawings:

fig. 1 shows an exploded view of a seal assembly relative to a first comparative example of an embodiment of the present invention.

FIG. 2 shows a longitudinal cross-sectional view of a scroll compressor including a seal assembly according to the present invention;

FIG. 3 shows an enlarged partial view of the sealing assembly of FIG. 2 in sealing engagement with the insert;

FIG. 4 illustrates a partial longitudinal cross-sectional view of a scroll compressor including a seal assembly according to another embodiment of the present invention, with the non-orbiting scroll omitted;

FIG. 5 shows an enlarged partial view of the upper plate of FIG. 4 in sealing engagement with the insert.

FIG. 6 illustrates a partial longitudinal cross-sectional view of a scroll compressor including a seal assembly according to another embodiment of the present invention, with the non-orbiting scroll omitted;

FIG. 7 shows an enlarged partial view of the upper plate of FIG. 6 in sealing engagement with the insert.

Detailed Description

The following description of the various embodiments of the present invention is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. The same reference numerals are used to designate the same components in the respective drawings, and thus the configurations of the same components will not be described repeatedly.

Fig. 1 shows an exploded view of a seal assembly S relative to a first comparative example of an embodiment of the present invention. As shown in fig. 1, the seal assembly S includes an upper plate S1, a lower plate S2, and an inner seal ring S3 and an outer seal ring S4 disposed between the upper plate S1 and the lower plate S2. When the upper end of the upper plate S1 of the seal assembly S comes into contact with the lower surface of the partition plate (not shown) or the lower surface of the insert (contact) fixed to the partition plate in a planar form, a minute vibration is generated due to the non-orbiting scroll member, thereby pushing the seal assembly provided in the recess of the non-orbiting scroll member to follow the generated minute vibration, thereby causing abrasion of the seal surface of the seal assembly. In addition, under actual operating conditions, the sealing position varies with operating conditions, and the effective sealing surface is not the entire sealing surface of the seal assembly that contacts the insert. Especially under the working conditions of maximum pressure difference and high pressure load, the contact positions generally respectively appear at the inner side and the outer side of the sealing surface, and the effective contact area is smaller, so that the sealing effect is reduced.

Accordingly, the present inventors have recognized a need for a seal assembly that avoids wear of the seal surfaces, achieves a better sealing effect, and allows the seal assembly to be quickly unloaded and dropped.

Referring now to FIGS. 2 and 3, a seal assembly and a scroll compressor including the same in accordance with embodiments of the present invention will be described. FIG. 2 shows a longitudinal cross-sectional view of a scroll compressor according to the present invention; FIG. 3 shows an enlarged partial view of the sealing assembly of FIG. 2 in sealing engagement with the insert.

The general construction and operating principle of a scroll compressor including a seal assembly according to an embodiment of the present invention will be described first with reference to fig. 2. As shown in FIG. 1, a scroll compressor 100 (hereinafter sometimes referred to as a compressor) generally includes a housing 110. The casing 110 may include a substantially cylindrical body 111, a top cover 112 disposed at one end of the body 111, a bottom cover 114 disposed at the other end of the body 111, and a partition plate 116 disposed between the top cover 112 and the body 111 to partition an inner space of the casing of the compressor into a high pressure side and a low pressure side. The space between the partition plate 116 and the top cover 112 constitutes a high pressure side, and the space between the partition plate 116, the body 111, and the bottom cover 114 constitutes a low pressure side. A motor 120 is provided in the housing 110, and a drive shaft 130 is provided in the motor 120 to drive a compression mechanism constituted by a non-orbiting scroll member 150 and an orbiting scroll member 160. Orbiting scroll member 160 includes an end plate 164, a hub 162 formed on one side of end plate 164, and a spiral vane 166 formed on the other side of end plate 164. Non-orbiting scroll member 150 includes an end plate 154, a spiral vane 156 formed on one side of end plate 154, and a recess 158 formed on the other side of end plate 154. An exhaust port 152 is formed at a substantially central position of the end plate 154. The space around the exhaust port 152 also constitutes the high pressure side. A series of compression chambers C1, C2, and C3, of progressively decreasing volume from the radially outer side to the radially inner side, are formed between

spiral vanes

156, 166 of non-orbiting scroll member 150 and orbiting scroll member 160. The radially outermost compression pocket C1 is at suction pressure and the radially innermost compression pocket C3 is at discharge pressure. The intermediate compression chamber C2 is between the suction pressure and the discharge pressure and is also referred to as an intermediate pressure chamber.

One side of orbiting scroll part 160 is supported by an upper portion (i.e., a support portion) of main bearing housing 140, and one end of driving shaft 130 is supported by main bearing 144 provided in main bearing housing 140. An eccentric crank pin 132 is provided at one end of the drive shaft 130, and a relief bushing 142 is provided between the eccentric crank pin 132 and a hub 162 of the orbiting scroll member 160. Upon actuation of motor 120, orbiting scroll member 160 will be rotated in translation relative to non-orbiting scroll member 150 (i.e., the central axis of orbiting scroll member 160 rotates about the central axis of non-orbiting scroll member 150, but orbiting scroll member 160 does not itself rotate about its central axis) to effect compression of the fluid. The fluid compressed by the non-orbiting scroll part 150 and the orbiting scroll part 160 is discharged to a high pressure side through the discharge port 152.

To achieve compression of the fluid, an effective seal is required between non-orbiting scroll member 150 and orbiting scroll member 160.

In one aspect, axial seals are required between the tips of spiral vanes 156 of non-orbiting scroll member 150 and end plate 164 of orbiting scroll member 160 and between the tips of spiral vanes 166 of orbiting scroll member 160 and end plate 154 of non-orbiting scroll member 150. Typically, a seal assembly S is disposed in the recess 158 of the non-orbiting scroll member 150. That is, the seal assembly S is disposed between the partition plate 116 and the non-orbiting scroll member 150. Recess 158 is in fluid communication with one of a series of compression pockets C1, C2, C3 via a through-hole (also referred to as a medium pressure passage) formed in non-orbiting scroll end plate 154. Preferably, the recess 158 is in fluid communication with the intermediate compression chamber C2 via the through-hole described above. Seal assembly S thus cooperates with recess 158 to form a back pressure chamber BC that provides back pressure to orbiting scroll member 150. The axial displacement of the seal assembly S is limited by the partition plate 116. Since one side of orbiting scroll member 160 is supported by the support portion of main bearing housing 140, non-orbiting scroll member 150 and orbiting scroll member 160 may be effectively pressed together by the pressure in back pressure chamber BC. When the pressure in each compression chamber exceeds the set value, the resultant force of the pressures in these compression chambers will exceed the lower pressure provided in back pressure chamber BC causing non-orbiting scroll member 150 to move upward. At this time, the fluid in the compression pockets will leak to the low pressure side through the gap between the tips of the spiral vanes 156 of the non-orbiting scroll member 150 and the end plate 164 of the orbiting scroll member 160 and the gap between the tips of the spiral vanes 166 of the orbiting scroll member 160 and the end plate 154 of the non-orbiting scroll member 150 to achieve unloading, thereby providing axial flexibility to the scroll compressor.

On the other hand, radial sealing is also required between the side surface of the spiral vane 156 of the non-orbiting scroll member 150 and the side surface of the spiral vane 166 of the orbiting scroll member 160. This radial seal between the two is typically achieved by centrifugal force of the orbiting scroll member 160 during operation and the driving force provided by the drive shaft 130. Specifically, during operation, orbiting scroll member 160 will be rotated in translation relative to non-orbiting scroll member 150 by the actuation of motor 120, and thus, orbiting scroll member 160 will generate a centrifugal force. On the other hand, the eccentric crank pin 132 of the drive shaft 130 also generates a driving force component during rotation that helps to effect radial sealing of the non-orbiting and orbiting scroll members. The spiral vanes 166 of orbiting scroll member 160 will abut against the spiral vanes 156 of non-orbiting scroll member 150 by virtue of the centrifugal and driving force components described above, thereby effecting a radial seal therebetween. When incompressible substances such as solid impurities, lubricating oil, and liquid refrigerant enter the compression chamber to be caught between the helical blade 156 and the helical blade 166, the helical blade 156 and the helical blade 166 can be temporarily separated from each other in the radial direction to allow foreign substances to pass through, thus preventing the

helical blade

156 or 166 from being damaged. This ability to radially separate provides radial flexibility to the scroll compressor, increasing compressor reliability.

The construction and function of the seal assembly S will be described in more detail below. As shown in fig. 3, the seal assembly S is disposed between the partition plate 116 and the non-orbiting scroll member 150. Specifically, the seal assembly S is disposed between the recess 158 of the non-orbiting scroll member 150 and an insert 117 mounted on the non-orbiting scroll member 150 (the insert 117 is disposed at a central location of the non-orbiting scroll member 150 to facilitate sealing contact with the seal assembly S). The seal assembly S includes an upper plate S1, a lower plate S2, and an inner seal ring S3 and an outer seal ring S4 disposed between the upper plate S1 and the lower plate S2. The shape of seal assembly S substantially corresponds to the shape of recess 158 such that inner seal ring S3 may seal against a radially inner sidewall of recess 158 and outer seal ring S4 may seal against a radially outer sidewall of recess 158. Further, the upper end face of the upper plate S1 is a first seal surface SS1 whose sectional contour is diagonal, and this first seal surface SS1 abuts against a second seal surface SS2 whose sectional contour is diagonal of the insert 117 fitted on the partition plate 116 to effect sealing. Since the cross-sectional contours of first seal surface SS1 and second seal surface SS2 are diagonal, first seal surface SS1 and second seal surface SS2 create a self-centering effect that limits relative movement between upper plate S and insert 117 of seal assembly S in the radial direction, thereby avoiding wear on first seal surface SS1 and second seal surface SS 2. And because the cross-sectional outlines of the first sealing surface SS1 and the second sealing surface SS2 are oblique lines, the sealing area between the first sealing surface SS1 and the second sealing surface SS2 is increased compared with a plane, so that a better sealing effect is easily obtained, the contact force of the sealing surfaces is not required to be increased to avoid the abrasion of the sealing surfaces and obtain a better sealing effect, the contact force of the sealing surfaces is not required to be increased by increasing the areas of the medium-pressure cavity and the high-pressure cavity, and the sealing assembly can be easily and quickly unloaded and dropped.

Preferably, a regulating washer S5 is also included. A tuning washer S5 is disposed radially inwardly of the lower plate and cooperates with the radially inner side wall of recess 158 of non-orbiting scroll member 150 wherein the outer diameter of tuning washer S5 is smaller than the inner diameter of lower plate S2 radially adjacent tuning washer S5 and the inner diameter of tuning washer S5 is smaller than the inner diameter of lower plate S2 axially adjacent tuning washer S5. Thus, the adjustment washer S5 is movable in a radial direction relative to the seal assembly S. The shim S5 abuts the lower plate S2 in the axial direction and axially supports the inner seal ring S3. Tuning washer S5 may allow for better assembly flexibility between seal assembly S and non-orbiting scroll member 150, thereby avoiding over-constraint. This is because during assembly, it is not guaranteed that the centre line of the non-orbiting scroll member 150 and the centre line of the insert 117 on the partition plate 116 are perfectly centred, whereas in the case where the bevelled nature of the upper plate S1 of the seal assembly S helps to centre with the insert 117, the clearance itself between the lower plate S2 and the radially inner side wall of the recess 158 is not large, and in the case where centring between the centre line of the non-orbiting scroll member 150 and the insert 117 on the partition plate 116 is not perfect, without the adjustment washer S5, the lower plate S2 of the seal assembly S is easily brought into contact with the radially inner side wall of the recess 158, so that the first sealing surface SS1 of the upper plate S1 of the seal assembly S and the second sealing surface SS2 of the insert 117 do not perfectly engage, causing a bypass on the exhaust and suction sides.

Preferably, the inclination angle of the first sealing surface SS1 of the upper plate S1 is in the range of more than 0 ° and less than 90 ° and more than 90 ° and less than 180 ° (the angle is an angle of counterclockwise rotation of 0 ° in the horizontal right direction with the lowest point of the first sealing surface SS1 as the origin). Preferably, in the case where the cross-sectional contour line of the second sealing surface SS2 is a diagonal line, the inclination angle of the second sealing surface SS2 is in the range of more than 0 ° and less than 90 ° and more than 90 ° and less than 180 ° (this angle is an angle of counterclockwise rotation of 0 ° in the horizontal right direction with the lowest point of the second sealing surface SS2 as the origin).

. Fig. 4 and 5 show a seal assembly S including a first sealing surface SS1 of an upper plate S1 of the seal assembly S in sealing engagement with a second sealing surface SS2 of an insert 117 provided on a partition plate 116, the first sealing surface SS1 of the upper plate S1 being inclined at an angle in a range of more than 90 ° and less than 180 °.

Preferably, upper plate S1 of seal assembly S is provided with a groove S11 adjacent to first sealing surface SS1 to achieve a better deformation coordination and more effective uniform contact stress between first sealing surface SS1 of upper plate S1 of seal assembly S and second sealing surface SS2 of insert 117 to achieve a good seal. Preferably, the groove S11 may be disposed radially outward and/or radially inward of the upper plate S1 adjacent the first sealing surface SS 1. Preferably, the groove S11 may be plural. Preferably, the cross-sectional shape of the groove S11 is U-shaped, V-shaped, stepped, circular, or the like.

Preferably, the shape of the first sealing surface SS1 of the upper plate S1 of the seal assembly S may be any shape that limits radial movement of the seal assembly S. Preferably, the first sealing surface SS1 has a cross-sectional profile that is a diagonal, circular arc, curve or involute, and/or the second sealing surface has a cross-sectional profile that is: a diagonal, a circular arc, a curve or an involute. Fig. 6 and 7 show a sealing assembly S including a further embodiment according to the present invention, wherein the upper plate S1 of the sealing assembly S is in sealing engagement with the insert 117 provided on the partition plate 116, and the cross-sectional contours of the first sealing surface SS1 of the upper plate S1 and the second sealing surface SS2 of the insert 117 of the sealing assembly S are circular arcs.

Although various embodiments of the present invention have been described in detail herein, it is to be understood that this invention is not limited to the particular embodiments described and illustrated in detail herein, and that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the invention. All such variations and modifications are intended to be within the scope of the present invention. Moreover, all the components described herein may be replaced by other technically equivalent components.

Claims

1. A scroll compressor (100), the scroll compressor (100) comprising:

a housing (110);

a non-orbiting scroll member (150) disposed within the housing (110);

a partition plate (116) disposed within the shell (110) and adjacent to the non-orbiting scroll member (150) for dividing an interior space of the shell (110) into a high pressure side and a low pressure side;

a seal assembly (S) disposed between the divider plate (116) and the non-orbiting scroll member (150), the seal assembly (S) comprising:

an upper plate (S1), an upper end of the upper plate (S1) including a first sealing surface (SS1), a lower end of the divider plate (116) having a second sealing surface (SS2), the first sealing surface (SS1) sealingly engaging the second sealing surface (SS2) to limit radial movement of the seal assembly (S).

2. A scroll compressor (100), the scroll compressor (100) comprising:

a housing (110);

a non-orbiting scroll member (150) disposed within the housing (110);

a partition plate (116) disposed within the casing (110) and adjacent to the non-orbiting scroll member (150) for dividing an inner space of the casing (110) into a high pressure side and a low pressure side, wherein the partition plate (116) is provided at a central position thereof with an insert (117);

a seal assembly (S) disposed between the insert (117) and the non-orbiting scroll member (150), the seal assembly (S) comprising:

an upper plate (S1), an upper end of the upper plate (S1) including a first sealing surface (SS1), a lower end of the insert (117) having a second sealing surface (SS2), the first sealing surface (SS1) in sealing engagement with the second sealing surface (SS2) to limit radial movement of the seal assembly (S).

3. The scroll compressor (100) of claim 1 or 2,

a recess (158) is formed in an end plate (154) of the non-orbiting scroll member (150),

the sealing assembly (S) further comprises:

a lower plate (S2), the lower plate (S2) configured to fit in a recess (158) of a non-orbiting scroll member (150) of the scroll compressor (100); and

an inner seal ring (S3) and an outer seal ring (S4) disposed between the upper plate (S1) and the lower plate (S2).

4. The scroll compressor (100) of claim 3, wherein the scroll compressor (100) further comprises an adjustment shim (S5), the adjustment shim (S5) being disposed radially inward of the lower plate (S2), the adjustment shim (S5) having an outer diameter that is less than an inner diameter of the lower plate (S2) radially adjacent the adjustment shim (S5), the adjustment shim (S5) having an inner diameter that is less than an inner diameter of the lower plate (S2) axially adjacent the adjustment shim (S5), the seal assembly (S) being movable in a radial direction relative to the adjustment shim (S5).

5. The scroll compressor (100) of claim 4, wherein the tuning washer (S5) abuts the lower plate (S2) in an axial direction and axially supports the inner seal ring (S3).

6. The scroll compressor (100) of claim 1 or 2, wherein the cross-sectional profile of the first sealing surface (SS1) is: -the section profile of the oblique line, arc, curve or involute, and/or of the second sealing surface (SS2) is: a diagonal, a circular arc, a curve or an involute.

7. The scroll compressor (100) of claim 6, wherein the angle of inclination of the first sealing surface (SS1) is in the range of greater than 0 ° less than 90 ° and greater than 90 ° less than 180 ° in the case where the cross-sectional profile line of the first sealing surface (SS1) is a diagonal line, and/or the angle of inclination of the second sealing surface (SS2) is in the range of greater than 0 ° less than 90 ° and greater than 90 ° less than 180 ° in the case where the cross-sectional profile line of the second sealing surface (SS2) is a diagonal line.

8. The scroll compressor (100) of claim 1 or 2, wherein the upper plate (S1) of the seal assembly (S) is provided with a groove (S11) adjacent a radially inner and/or radially outer side of the first sealing surface (SS 1).

9. The scroll compressor (100) of claim 8, wherein the cross-sectional shape of the groove (S11) is U-shaped, V-shaped, stepped, circular.

10. The scroll compressor (100) of claim 1 or 2, wherein the second sealing surface (SS2) of the separator plate (116) of the scroll compressor (100) or the second sealing surface (SS2) of the insert (117) on the separator plate (116) is form-fitted with the first sealing surface (SS 1).