CN112460015A

CN112460015A - Scroll compressor having a plurality of scroll members

Info

Publication number: CN112460015A
Application number: CN202011412710.7A
Authority: CN
Inventors: 胡余生; 徐嘉; 李海港; 单彩侠; 刘双来; 律刚
Original assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
Current assignee: Gree Green Refrigeration Technology Center Co Ltd of Zhuhai; Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-03-09

Abstract

The present application provides a scroll compressor. The scroll compressor comprises an orbiting scroll and a static scroll, wherein the orbiting scroll comprises an inner side molded line, an outer side molded line and a tooth head molded line; the inner side molded line of the movable scroll comprises a first arc section and a first gradually-opening line section, the outer side molded line of the static scroll comprises a fourth arc section and a fourth gradually-opening line section, the first arc section is positioned on one side, away from the first tooth head molded line, of the first inner disengaging point, and the fourth arc section is positioned on one side, away from the second tooth head molded line, of the second outer disengaging point; and/or the outer side molded line of the movable scroll comprises a second arc section and a second gradually-opened line section, the inner side molded line of the fixed scroll comprises a third arc section and a third gradually-opened line section, the second arc section is positioned on one side of the first external disengagement point far away from the first tooth head molded line, and the third arc section is positioned on one side of the second internal disengagement point far away from the second tooth head molded line. According to the scroll compressor of this application, can realize quick exhaust, reduce exhaust over-compression, improve compressor efficiency.

Description

Scroll compressor having a plurality of scroll members

Technical Field

The application relates to the technical field of compressors, in particular to a scroll compressor.

Background

The scroll compressor has the advantages of simple structure, small volume, light weight, low noise, high mechanical efficiency, stable operation and the like. The scroll compressor is a fluid machine which can realize gas compression by means of volume change, the dynamic and static scrolls are main pump body parts, and the most common molded lines of the dynamic and static scrolls are involutes of circles and correction curves thereof. The movable vortex disc and the static vortex disc are oppositely assembled with a phase angle difference of 180 degrees, the movable vortex disc moves under the driving of a crankshaft and is meshed with the static vortex disc to form a series of crescent closed containing cavities which are isolated from each other and continuously change in volume, after a refrigerant in a compression cavity is compressed to a molded line disengagement position, the compression cavity is communicated with a static vortex disc exhaust port to start exhaust, and the exhaust still needs to rotate for a certain angle from vortex tooth molded line disengagement to large opening degree, so that the compression problem can be caused in the process, and the compression power consumption is increased.

Disclosure of Invention

Therefore, the technical problem that this application will be solved lies in providing a scroll compressor, can realize quick exhaust, reduces to exhaust over-compression, reduces power loss, improves compressor efficiency.

In order to solve the problems, the application provides a scroll compressor, which comprises an orbiting scroll and a fixed scroll, wherein the orbiting scroll comprises an inner side molded line of the orbiting scroll, an outer side molded line of the orbiting scroll and a first tooth head molded line, and the fixed scroll comprises an inner side molded line of the fixed scroll, an outer side molded line of the fixed scroll and a second tooth head molded line;

the inner side molded line of the movable scroll comprises a first arc section and a first gradually-opening line section, the first gradually-opening line section is connected with the first tooth head molded line through the first arc section, the outer side molded line of the fixed scroll comprises a fourth arc section and a fourth gradually-opening line section, the fourth gradually-opening line section is connected with the second tooth head molded line through the fourth arc section, the movable scroll comprises a first inner disengaging point, the fixed scroll comprises a second outer disengaging point, the first arc section is positioned on one side, away from the first tooth head molded line, of the first inner disengaging point, and the fourth arc section is positioned on one side, away from the second tooth head molded line, of the second outer disengaging point;

and/or, the outer side molded line of the movable scroll comprises a second arc section and a second gradually-opened line segment, the second gradually-opened line segment is connected with the first tooth head molded line through the second arc section, the inner side molded line of the static scroll comprises a third arc section and a third gradually-opened line segment, the third gradually-opened line segment is connected with the second tooth head molded line through the third arc section, the movable scroll comprises a first outer disengaging point, the static scroll comprises a second inner disengaging point, the second arc section is positioned on one side of the first outer disengaging point far away from the first tooth head molded line, and the third arc section is positioned on one side of the second inner disengaging point far away from the second tooth head molded line.

Preferably, the first arc section is tangent to the first tooth head profile at the connection position, the first arc section is tangent to the first involute profile at the connection position, the fourth arc section is tangent to the second tooth head profile at the connection position, and the fourth arc section is tangent to the fourth involute profile at the connection position.

Preferably, the second arc section is tangent to the first tooth head profile at the connection position, the second arc section is tangent to the second involute profile at the connection position, the third arc section is tangent to the second tooth head profile at the connection position, and the third arc section is tangent to the third involute profile at the connection position.

Preferably, the first circular arc section and the first tooth head profile intersect at a first inner disengaging point, and the fourth circular arc section and the second tooth head profile intersect at a second outer disengaging point.

Preferably, the second circular arc section and the first tooth head profile line intersect at a first outer disengaging point, and the third circular arc section and the second tooth head profile line intersect at a second inner disengaging point.

Preferably, the radius of the first circular arc segment is R1, the radius of the fourth circular arc segment is R3, and R1-R3 are R, wherein R is the radius of the orbiting scroll.

Preferably, the radius of the second circular arc segment is R2, the radius of the third circular arc segment is R4, and R4-R2 are R, wherein R is the radius of the orbiting scroll.

Preferably, the central angles of the first circular arc segment and the fourth circular arc segment are the same.

Preferably, the central angles of the second circular arc segment and the third circular arc segment are the same.

Preferably, the first tooth head profile comprises a plurality of circular arc segments or a combination of circular arc segments and straight line segments.

Preferably, the second head profile line comprises a multi-segment circular arc segment or a combination of circular arc segments and straight segments.

The scroll compressor comprises an orbiting scroll and a fixed scroll, wherein the orbiting scroll comprises an inner side molded line of the orbiting scroll, an outer side molded line of the orbiting scroll and a first tooth head molded line, and the fixed scroll comprises an inner side molded line of the fixed scroll, an outer side molded line of the fixed scroll and a second tooth head molded line; the inner side molded line of the movable scroll comprises a first arc section and a first gradually-opening line section, the first gradually-opening line section is connected with the first tooth head molded line through the first arc section, the outer side molded line of the fixed scroll comprises a fourth arc section and a fourth gradually-opening line section, the fourth gradually-opening line section is connected with the second tooth head molded line through the fourth arc section, the movable scroll comprises a first inner disengaging point, the fixed scroll comprises a second outer disengaging point, the first arc section is positioned on one side, away from the first tooth head molded line, of the first inner disengaging point, and the fourth arc section is positioned on one side, away from the second tooth head molded line, of the second outer disengaging point; and/or, the outer side molded line of the movable scroll comprises a second arc section and a second gradually-opening line segment, the second gradually-opening line segment is connected with the first tooth head molded line through the second arc section, the inner side molded line of the static scroll comprises a third arc section and a third gradually-opening line segment, the third gradually-opening line segment is connected with the second tooth head molded line through the third arc section, the movable scroll comprises a first outer disengaging point, the second arc section is positioned on one side of the first outer disengaging point far away from the first tooth head molded line, the static scroll comprises a second inner disengaging point, and the third arc section is positioned on one side of the second inner disengaging point far away from the second tooth head molded line. The scroll compressor is characterized in that a section of circular arc curve is added in front of a mesh release point of an inner side molded line of a movable scroll and an outer side molded line of a static scroll, the inner side molded line of the movable scroll and the outer side molded line of the static scroll are adjusted through a circular arc transition curve, the inner side molded line of the movable scroll and the outer side molded line of the static scroll are changed, so that an inner cavity can realize quick exhaust after the inner side molded line of the movable scroll and the outer side molded line of the static scroll reach the mesh release point, and/or a section of circular arc curve is added in front of the mesh release point of the outer side molded line of the movable scroll and the inner side molded line of the static scroll, the outer side molded line of the movable scroll and the inner side molded line of the static scroll are adjusted through the circular arc transition curve, the outer cavity can realize quick exhaust after the outer side molded line of the movable scroll and the inner side molded line, therefore, the over-compression loss in the exhaust process can be reduced, the power loss is reduced, and the efficiency of the compressor is improved.

Drawings

FIG. 1 is a cross-sectional structural schematic view of a scroll compressor according to an embodiment of the present application;

FIG. 2 is a schematic view of the mating of the orbiting scroll and the fixed scroll of the scroll compressor of the embodiment of the present application;

FIG. 3 is a schematic structural view of a non-orbiting scroll wrap of a scroll compressor of an embodiment of the present application;

FIG. 4 is a schematic structural view of an orbiting scroll wrap of a scroll compressor of an embodiment of the present application;

FIGS. 5a-5d are schematic diagrams illustrating the movement of the orbiting scroll and the fixed scroll of the scroll compressor of the embodiment of the present application;

FIGS. 6a-6d are schematic diagrams illustrating the movement of the orbiting scroll and the fixed scroll of the scroll compressor of the embodiment of the present application at various rotation angles;

FIG. 7 is a graph comparing the outer cavity discharge effect of a scroll compressor of the present application embodiment with a compressor of conventional design;

fig. 8a to 8d are schematic views illustrating the movement processes of the orbiting scroll and the fixed scroll of the conventional scroll compressor in the related art.

The reference numerals are represented as:

1. a movable scroll pan; 2. a static scroll pan; 3. an upper bracket; 4. a rotor; 5. a housing; 6. a lower support ring; 7. a lower cover; 8. a lower bracket; 9. a motor; 10. a crankshaft; 11. a cross slip ring; 12. an upper cover; 13. an air intake duct; 100. a orbiting scroll wrap; 101. a second involute segment; 102. a first involute segment; 103. a first arc segment; 104. a first tooth head profile; 105. a second arc segment; 106. an exhaust groove; 200. a stationary scroll wrap; 201. a third diverging segment; 202. a fourth involute segment; 203. a third arc segment; 204. a second tooth head profile; 205. a fourth arc segment; 206. an exhaust port; 500. an outer cavity; 600. an inner cavity.

Detailed Description

Referring to fig. 1 to 7 in combination, according to an embodiment of the present application, a scroll compressor includes an orbiting scroll 1, a fixed scroll 2, an upper bracket 3, a rotor 4, a housing 5, a lower support ring 6, a lower cover 7, a lower bracket 8, a motor 9, a crankshaft 10, a oldham ring 11, an upper cover 12, and the like. The motor 9 is fixed on the housing 5 by a shrink fit, and the upper bracket 3 is fixed on the housing 5 by eight spot welding. The phase angle of the movable scroll 1 and the fixed scroll 2 is 180 degrees, the movable scroll 1 and the fixed scroll 2 are arranged on the upper bracket 3, the movable scroll 1 moves under the driving of a crankshaft 10 and is engaged with the fixed scroll 2 to form a series of crescent closed containing cavities which are mutually isolated and continuously change in volume, and the fixed scroll 2 is fixed on the upper bracket 3 through a screw fastener. The crankshaft assembly is supported by a lower support 8, the lower support 8 is fixed on a lower support ring 6 through a screw, and the lower support ring 6 is fixed on the shell 5 through spot welding.

When the compressor runs, the motor 9 drives the crankshaft 10 to rotate, the crank of the crankshaft 10 drives the movable scroll 1 to move, and the movable scroll 1 makes translational motion around the center of the crankshaft 10 by a fixed radius r under the anti-autorotation limit of the cross slip ring 11. Refrigerant entering from the air suction pipe 13 is sucked into a crescent air suction cavity formed by the movable scroll disk 1 and the fixed scroll disk 2, is discharged from an exhaust hole of the fixed scroll disk 2 after being compressed, enters a high-temperature exhaust cavity between the upper cover 1 and the fixed scroll disk 2, enters a cavity between the upper bracket 3 and the motor 9 through an exhaust groove of the fixed scroll disk 2 and the upper bracket 3, and is finally discharged through an exhaust pipe.

The movable scroll 1 comprises a movable scroll wrap 100, the movable scroll wrap 100 comprises a movable scroll inner profile, a movable scroll outer profile and a first tooth head profile 104, the fixed scroll 2 comprises a fixed scroll wrap 200, and the fixed scroll wrap 200 comprises a fixed scroll inner profile, a fixed scroll outer profile and a second tooth head profile 204.

The inner side molded line of the movable scroll comprises a first circular arc section 103 and a first gradually-opening line section 102, the first gradually-opening line section 102 is connected with a first tooth head molded line 104 through the first circular arc section 103, the outer side molded line of the movable scroll comprises a fourth circular arc section 205 and a fourth gradually-opening line section 202, the fourth gradually-opening line section 202 is connected with a second tooth head molded line 204 through the fourth circular arc section 205, the movable scroll 1 comprises a first inner disengaging point, the fixed scroll 2 comprises a second outer disengaging point, the first circular arc section 103 is positioned on one side, away from the first tooth head molded line 104, of the first inner disengaging point, and the fourth circular arc section 205 is positioned on one side, away from the second tooth head molded line 204, of the second outer disengaging point.

The outer side molded line of the movable scroll comprises a second circular arc section 105 and a second gradually-opening line section 101, the second gradually-opening line section 101 is connected with the first tooth head molded line 104 through the second circular arc section 105, the inner side molded line of the fixed scroll comprises a third circular arc section 203 and a third gradually-opening line section 201, the third gradually-opening line section 201 is connected with the second tooth head molded line 204 through the third circular arc section 203, the movable scroll 1 comprises a first outer disengaging point, the fixed scroll 2 comprises a second inner disengaging point, the second circular arc section 105 is positioned on one side, away from the first tooth head molded line 104, of the first outer disengaging point, and the third circular arc section 203 is positioned on one side, away from the second tooth head molded line 204, of the second inner disengaging point.

According to the scroll compressor, the section of the circular arc curve is added in front of the disengagement point of the inner side molded line of the movable scroll disk and the outer side molded line of the static scroll disk, the inner side molded line of the movable scroll disk and the outer side molded line of the static scroll disk are adjusted through the circular arc transition curve, and the structures of the inner side molded line of the movable scroll disk and the outer side molded line of the static scroll disk are changed, so that the inner cavity 600 can realize quick exhaust after the inner side molded line of the movable scroll disk and the outer side molded line.

A section of arc curve is added in front of the disengagement point of the outer side molded line of the movable scroll disk and the inner side molded line of the static scroll disk, the outer side molded line of the movable scroll disk and the inner side molded line of the static scroll disk are adjusted through the arc transition curve, and the structures of the outer side molded line of the movable scroll disk and the inner side molded line of the static scroll disk are changed, so that the outer cavity 500 can realize quick exhaust after the outer side molded line of the movable scroll disk and the inner side molded line of the static.

Through the structural improvement, the structures of the first tooth head molded line 104 of the movable scroll 1 and the second tooth head molded line 204 of the fixed scroll 2 can be adjusted, and meanwhile, the linear structures of the movable scroll 1 and the fixed scroll 2 before the disengagement point are improved, so that the scroll compressor can quickly reach the large-opening exhaust position to quickly exhaust after reaching the disengagement point, the over-compression loss in the exhaust process can be reduced, the power loss is reduced, and the compressor efficiency is improved.

The above and the following description of the present application are based on the cross-sectional structure shown in fig. 2.

The first arc segment 103 is tangent to the first tooth head profile 104 at a connection position, the first arc segment 103 is tangent to the first diverging line segment 102 at a connection position, the fourth arc segment 205 is tangent to the second tooth head profile 204 at a connection position, and the fourth arc segment 205 is tangent to the fourth diverging line segment 202 at a connection position.

Because both ends of the first arc segment 103 are tangent to the first tooth head type line 104 and the first involute segment 102 respectively, after the first arc segment 103 is determined, the structures of the first tooth head type line 104 and the first involute segment 102 are also determined basically, and because the structure of the first arc segment 103 is an arc, which is different from the first involute segment 102 in the prior art, the arrangement of the first arc segment 103 enables the structures of the first tooth head type line 104 and the first involute segment 102 to be changed correspondingly, so that the tooth head structure of the movable scroll disk 1 is changed, the head of the tooth head structure moves backwards, the inner side type line deviates to the center of the exhaust port, the maximum thickness of the tooth head structure is thickened, the strength of the tooth head structure is increased, and the operation reliability of the compressor can be ensured.

In the embodiment, a first inner disengaging point of the inner side molded line of the movable scroll is N2, a first outer disengaging point of the outer side molded line of the movable scroll is N3, a second inner disengaging point of the inner side molded line of the fixed scroll is N6, and a second outer disengaging point of the outer side molded line of the fixed scroll is N7.

The second arc section 105 is tangent to the first tooth head profile 104 at the connection position, the second arc section 105 is tangent to the second involute profile 101 at the connection position, the third arc section 203 is tangent to the second tooth head profile 204 at the connection position, and the third arc section 203 is tangent to the third involute profile 201 at the connection position.

Because the two ends of the third arc segment 203 are tangent to the second tooth-shaped line 204 and the third involute segment 201, after the third arc segment 203 is determined, the structures of the second tooth-shaped line 204 and the third involute segment 201 are also determined basically, and because the structure of the third arc segment 203 is an arc, compared with the third involute segment 201 in the prior art, the third arc segment 203 is different, the structures of the second tooth-shaped line 204 and the third involute segment 201 are correspondingly changed due to the arrangement of the third arc segment 203, so that the tooth structure of the static scroll disk 2 is changed, the head of the tooth structure moves backwards, the inner side shaped line deviates to the center of the exhaust port, the maximum thickness of the tooth structure is thickened, the strength of the tooth structure is increased, and the operation reliability of the compressor can be ensured.

The first circular arc segment 103 and the first tooth head profile 104 intersect at a first inner disengaging point, and the fourth circular arc segment 205 and the second tooth head profile 204 intersect at a second outer disengaging point. The second arc segment 105 and the first tooth head profile 104 intersect at a first external disengagement point, and the third arc segment 203 and the second tooth head profile 204 intersect at a second internal disengagement point.

Two end points of the first arc segment 103 are respectively N1 and N2, two end points of the second arc segment 105 are respectively N3 and N4, two end points of the third arc segment 203 are respectively N5 and N6, and two end points of the fourth arc segment 205 are respectively N7 and N8.

The compression cavity formed by the meshing and sealing of the outer side molded line of the movable scroll 1 and the inner side molded line of the fixed scroll 2 is an outer cavity 500, and the compression cavity formed by the meshing and sealing of the inner side molded line of the movable scroll 1 and the outer side molded line of the fixed scroll 2 is an inner cavity 600. .

The central angles of the first arc segment 103 of the inner molded line of the movable scroll 1 and the fourth arc segment 205 of the outer molded line of the fixed scroll 2 are the same and are both alpha, the radius of the first arc segment 103 is R1, the radius of the fourth arc segment 205 is R4, and R1-R3 are R, wherein R is the rotation radius of the movable scroll 1.

The central angles of the second arc segment 105 of the outer molded line of the movable scroll 1 and the third arc segment 203 of the inner molded line of the fixed scroll 2 are the same and are both beta, the radius of the second arc segment 105 is R3, the radius of the third arc segment 203 is R4, and R4-R2 are R, wherein R is the rotation radius of the movable scroll 1.

First tooth head type line 104 includes the combination of multistage circular arc section or circular arc section and straightway for the constitution of first tooth head type line 104 is more diversified, and the more convenient realization is connected with the tangent of first circular arc section 105 and second circular arc section 103.

The second tooth head profile 204 includes a plurality of arc segments or a combination of the arc segments and straight segments, so that the second tooth head profile 204 is more diversified in composition, and more convenient to realize the tangent connection with the third arc segment 203 and the fourth arc segment 205.

Referring to FIGS. 5a-5d in combination, there is shown a process diagram for outer cavity discharge of a scroll compressor. As shown in fig. 5a and 5b, the arc section 105 of the outer side molded line of the orbiting scroll 1 is engaged with the arc section 203 of the inner side molded line of the fixed scroll 2, when a first outer disengaging point N3 on the arc section 105 and a second inner disengaging point N6 on the arc section 203 coincide, the molded line reaches the disengaging point position, the outer chamber 500 starts to exhaust, and the outer chamber 500 is communicated with the exhaust port 206 of the fixed scroll 2; as shown in fig. 5c and 5d, the arc segment 103 of the inner molded line of the orbiting scroll 1 is engaged with the arc segment 205 of the outer molded line of the fixed scroll 2, when a first inner disengaging point N2 on the arc segment 103 and a second outer disengaging point N7 on the arc segment 205 are overlapped, the molded lines reach the disengaging point position, the inner cavity 600 starts to discharge air, the inner cavity 600 is communicated with the exhaust groove 106 of the orbiting scroll 1, and the exhaust groove 106 is communicated with the exhaust port 206 of the fixed scroll 2, thereby realizing the exhaust of the inner cavity 600.

Fig. 8a to 8d are schematic diagrams of the moving structures of the orbiting scroll and the fixed scroll of known designs, an involute 301 is an outer molded line of a scroll wrap 300 of the fixed

scroll

2, 302 is an inner molded line of the scroll wrap 300 of the fixed scroll 2, a curve 303 is a tooth head arc curve and is composed of a plurality of sections of arcs or line segments, and the curve 303 is tangent to the involute 301 and the involute 302; the involute 401 is the outer molded line of the scroll wrap 400 of the movable scroll 1, 402 is the inner molded line of the scroll wrap 400 of the movable scroll 1, the curve 403 is a tooth head arc curve and is composed of a plurality of sections of arcs or line segments, and the curve 403 is tangent to the involute 401 and the involute 402. As shown in fig. 8, when a disengagement point N11 on the involute 401 of the orbiting scroll 1 coincides with a disengagement point N10 on the involute 302 of the fixed scroll 1, the outer chamber starts to discharge gas; when the point of disengagement N12 on the involute 402 of the orbiting scroll 1 coincides with the point N9 on the involute 301 of the fixed scroll 1, the inner chamber starts to discharge gas.

Comparing the structure and motion process of the movable scroll 2 of the present application with the structure and motion process of the movable scroll 2 of the prior art of fig. 8a to 8d in fig. 5a to 5d, it can be known that, compared with the prior art, the tooth head structure of the movable scroll 1 of the present application moves backwards, the inner profile of the movable scroll 1 moves inwards, the basic position of the outer profile does not change greatly, the tooth head structure of the fixed scroll 2 moves backwards, the inner profile of the fixed scroll 2 moves inwards, the basic position of the outer profile does not change greatly, so that the tooth head structure thickness of the movable scroll 1 of the present application is greater than that of the movable scroll 1 of the prior art, the tooth head structure thickness of the fixed scroll 2 of the present application is greater than that of the fixed scroll 2 of the prior art, and simultaneously, the movable scroll 1 and the fixed scroll 2 of the present application can more rapidly enter the large-opening exhaust position compared with the prior art, greatly improving the over-compression phenomenon.

Fig. 6a to 6d are schematic diagrams illustrating the movement of the movable and fixed scrolls when the outer cavity of the scroll compressor of the embodiment of the present application rotates at the disengaging point and the movable scroll rotates at 36 degrees, 76 degrees and 116 degrees after disengaging. Fig. 7 is a comparison graph of opening distances at various positions of the scroll compressor according to the embodiment of the present application and the scroll compressor of the prior art. As can be seen from fig. 6 and 7, as the rotation angle increases, the opening distance d between the tooth head structure of the orbiting scroll 1 and the tooth head structure of the fixed scroll 2 of the present application increases gradually, which is more beneficial to exhaust, and can reduce exhaust loss and improve compressor efficiency.

In addition, as can be seen from the figure, in the whole movement process of the movable scroll and the fixed scroll, the opening distance d between the tooth head structure of the movable scroll 1 and the tooth head structure of the fixed scroll 2 is always larger than that between the tooth head structure of the movable scroll 1 and the tooth head structure of the fixed scroll 2 in the same angular position, so that the over-compression problem can be greatly improved compared with the prior art.

TABLE 1

Table 1 shows a comparison table of thicknesses of wrap heads of the movable scroll in the present embodiment and the fixed scroll of the known design, and it can be found that, when the molded lines of the inner and outer sides of the wrap, the compression cavity volume ratio, and the area of the discharge port (discharge port 206, discharge port 304) of the fixed scroll are not changed, the maximum wrap head thickness T1max of the fixed scroll 2 of the present embodiment is 6.4mm (as shown in fig. 3), and is 16.4% thicker than the maximum wrap head thickness T3max of the fixed scroll 2 of the known design which is 5.5mm (as shown in fig. 8 b), and the maximum wrap head thickness T2max of the movable scroll 1 of the present embodiment is 6.0mm (as shown in fig. 3), and is 20% thicker than the maximum wrap head thickness T4max of the movable scroll 1 of the known design which is 5.0mm (as shown in fig. 8 c), so that the scroll compressor of the present embodiment greatly increases the wrap head thickness and improves the wrap strength reliability.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.

Claims

1. The scroll compressor is characterized by comprising an orbiting scroll and a static scroll, wherein the orbiting scroll comprises an inner side molded line of the orbiting scroll, an outer side molded line of the orbiting scroll and a first tooth head molded line;

and/or, it includes second circular arc section and the gradual-open line segment of second to move whirlpool dish outside molded lines, the second is gradually opened up the section and is passed through the second circular arc section with first geared head molded lines are connected, the inboard molded lines of quiet whirlpool dish include third circular arc section and the gradual-open line segment of third, the third is gradually opened up the section and is passed through the third circular arc section with second geared head molded lines are connected, it includes first outer disengagement point to move the whirlpool dish, the quiet whirlpool dish includes disengagement point in the second, the second circular arc section is located first outer disengagement point is kept away from one side of first geared head molded lines, the third circular arc section is located disengagement point is kept away from in the second one side of second geared head molded lines.

2. The scroll compressor of claim 1, wherein the first circular arc segment is tangent to the first tooth start profile at a connection location, the first circular arc segment is tangent to the first diverging line segment at a connection location, the fourth circular arc segment is tangent to the second tooth start profile at a connection location, and the fourth circular arc segment is tangent to the fourth diverging line segment at a connection location.

3. The scroll compressor of claim 1, wherein the second circular arc segment is tangent to the first tooth start profile at a connection location, the second circular arc segment is tangent to the second diverging segment at a connection location, the third circular arc segment is tangent to the second tooth start profile at a connection location, and the third circular arc segment is tangent to the third diverging segment at a connection location.

4. The scroll compressor of claim 1, wherein the first circular arc segment and the first tooth head contour intersect at the first inner disengagement point and the fourth circular arc segment and the second tooth head contour intersect at the second outer disengagement point.

5. The scroll compressor of claim 1, wherein the second circular arc segment and the first tooth head contour intersect at the first outer disengagement point and the third circular arc segment and the second tooth head contour intersect at the second inner disengagement point.

6. The scroll compressor of claim 1, wherein the first arc segment has a radius R1, the fourth arc segment has a radius R3, R1-R3 ═ R, where R is an orbiting scroll rotation radius.

7. The scroll compressor of claim 1, wherein the second arc segment has a radius R2, the third arc segment has a radius R4, R4-R2, where R is an orbiting scroll rotation radius.

8. The scroll compressor of claim 1, wherein the first arc segment and the fourth arc segment have the same central angle.

9. The scroll compressor of claim 1, wherein the second arc segment and the third arc segment have the same central angle.

10. The scroll compressor of claim 2, wherein the first tooth head contour comprises a multi-segment circular arc segment or a combination of circular arc segments and straight segments.

11. The scroll compressor of claim 3, wherein the second tooth trace comprises a multi-segment circular arc segment or a combination of circular arc segments and straight segments.