CN107023481B

CN107023481B - Scroll assembly and scroll apparatus including the same

Info

Publication number: CN107023481B
Application number: CN201610064289.2A
Authority: CN
Inventors: 冯朝辉; 方志刚; 吴凌云
Original assignee: Emerson Climate Technologies Suzhou Co Ltd
Current assignee: Copeland Suzhou Co Ltd
Priority date: 2016-01-29
Filing date: 2016-01-29
Publication date: 2019-12-31
Anticipated expiration: 2036-01-29
Also published as: CN107023481A

Abstract

The present invention provides a scroll assembly for a scroll machine, comprising: fixing vortex; the movable vortex is arranged opposite to the fixed vortex; and an anti-rotation mechanism including first and second members independent of each other, the first and second members having respective first joints attached to the orbiting scroll and second joints attached to the fixed scroll or a support structure of the scroll device, thereby enabling the orbiting scroll to orbit relative to the fixed scroll without rotating. The vortex assembly anti-rotation mechanism has the advantages that the overall weight is obviously reduced, the structure is simplified, and the vibration and the noise of the vortex assembly are effectively restrained and even eliminated. The invention also provides vortex equipment comprising the vortex assembly.

Description

Scroll assembly and scroll apparatus including the same

Technical Field

The invention relates to a scroll assembly and a scroll apparatus including the same.

Background

The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

Scroll machines are a common type of apparatus currently used for fluid compression and delivery, and the like. Common scroll apparatuses are, for example, scroll expanders, scroll compressors, scroll engines, scroll pumps, and the like. The main part of the scroll apparatus is the scroll assembly, which can be used to compress and transport fluids. Scroll assemblies typically include a non-orbiting scroll and an orbiting scroll nested one on top of the other and an oldham ring disposed between the non-orbiting and orbiting scrolls.

The operation of the scroll machine will be described by taking a scroll compressor as an example. In a scroll assembly of a scroll compressor, a fixed scroll and an orbiting scroll are fitted to each other in a nested manner, wherein the orbiting scroll is installed eccentrically opposite to the fixed scroll. The motor in a scroll compressor cranks the orbiting scroll relative to the non-orbiting scroll such that a series of crescent-shaped spaces are formed between the wraps of the orbiting and non-orbiting scrolls.

The cross slip ring of the vortex component is used for preventing the movable vortex from rotating while the movable vortex revolves around the center of the fixed vortex. The oldham ring, which prevents rotation of the orbiting scroll relative to the fixed scroll, may take a variety of forms, and typically includes two pairs of keys extending from the annular body. The first pair of keys fits within the groove of the orbiting scroll and the second pair of keys fits within the groove of the non-orbiting scroll. During operation of the scroll compressor, the two pairs of keys of the oldham ring reciprocate within the grooves of the fixed scroll and the orbiting scroll. However, the oldham rings tend to vibrate between the orbiting and non-orbiting scrolls during operation, emitting periodic vibration noise, which is obviously desirable to avoid during operation, and they also lead to shortened compressor life.

To this end, it is desirable to provide a new scroll assembly that addresses the above-mentioned problems.

Disclosure of Invention

It is an object of the present invention to provide a scroll assembly having a light weight, simple structure of an anti-rotation mechanism.

It is another object of the present invention to provide a scroll assembly which reduces or even eliminates vibration and noise during operation of the scroll apparatus.

It is a further object of the present invention to provide a scroll assembly which has a simplified construction and is easy to manufacture and install.

It is a further object of the present invention to provide a vortex apparatus which operates with less noise and has an extended service life.

In accordance with a first aspect of the present invention, there is provided a scroll assembly for a scroll apparatus, including: fixing vortex; the movable vortex is arranged opposite to the fixed vortex; and an anti-rotation mechanism including first and second members independent of each other, the first and second members having respective first joints attached to the orbiting scroll and second joints attached to the fixed scroll or a support structure of the scroll device, thereby enabling the orbiting scroll to orbit relative to the fixed scroll without rotating.

In the technical scheme, the novel anti-rotation structure comprising the independent joint component is adopted to replace the cross slip ring so as to prevent the vortex from rotating, the whole weight of the anti-rotation structure is obviously reduced, the structure is simplified, and therefore vibration and noise of the vortex assembly are effectively restrained and even eliminated.

Preferably, the first engagement formation is movable relative to the orbiting scroll along a first trajectory and the second engagement formation is movable relative to the non-orbiting scroll or the support structure along a second trajectory.

Preferably, the first trajectory is a straight trajectory in a first direction, the second trajectory is a straight trajectory in a second direction at an angle to the first direction, and the first engagement portion and the second engagement portion are slidable in the first direction and the second direction, respectively.

Preferably, the first direction is orthogonal to the second direction.

Preferably, the movable scroll is provided with a first sliding groove extending along a first direction for accommodating the first engagement portion, and the support structure or the fixed scroll is provided with a second sliding groove extending along a second direction for accommodating the second engagement portion.

Preferably, the first and second engagement portions are received in the first and second slide slots, respectively, in a clearance fit.

Preferably, a line of the first chute is offset from a center of the orbiting scroll or the line passes through the center of the orbiting scroll.

Preferably, the first sliding groove is integrally formed on the movable scroll.

Preferably, the second engaging portion is attached to the non-orbiting scroll, and the second sliding groove is formed at a periphery of the non-orbiting scroll.

Preferably, the second engagement portion is attached to the support structure, the second runner being provided at a periphery of the support structure.

Preferably, the support structure comprises a main bearing housing of the scroll apparatus or a lug disposed inside a housing of the scroll apparatus.

Preferably, the main bearing housing comprises a thrust device and a bearing housing body, the second runner being provided on the thrust device or the bearing housing body.

Preferably, the thrust device or the bearing housing body is provided at its periphery with a mounting block in which the second runner is formed.

Preferably, the second runner is provided on a lug inside the housing of the scroll apparatus.

Preferably, the first member and the second member are configured to have an "I" -shaped, "T" -shaped, or rectangular cross-section.

Preferably, the first engagement portion has a cross-sectional width greater than a cross-sectional width of the second engagement portion.

Preferably, a lower portion of the second engaging portion is provided with a shoulder portion.

Preferably, corners of the first and second members are rounded.

Preferably, the first member and the second member are made of cast iron or an aluminum alloy or have an aluminum alloy coating.

Preferably, the rotation prevention mechanism includes a plurality of first members or a plurality of second members.

There is also provided according to a second aspect of the present invention a scroll apparatus including a scroll assembly according to the first aspect of the present invention as described above.

Preferably, the scroll apparatus may be a scroll compressor.

Drawings

The features and advantages of one or more embodiments of the present invention will become more readily understood from the following description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is an exploded schematic view of a prior art scroll assembly;

FIG. 2 is a schematic view of an Oldham ring employed in the scroll assembly of FIG. 1;

FIG. 3 is a schematic top view of a scroll assembly according to one embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3 of a scroll assembly according to an embodiment of the present invention;

FIG. 5 is a schematic view of the scroll assembly of FIG. 4 with the non-orbiting scroll removed;

FIG. 6 is a schematic perspective view of an anti-rotation mechanism employed in a scroll assembly according to one embodiment of the present invention;

FIG. 7 is a side view of the anti-spin mechanism of FIG. 6;

FIG. 8 is a front view of the anti-spin mechanism of FIG. 6;

FIG. 9 is a cross-sectional view of the anti-spin mechanism of FIG. 6 taken along line D-D of FIG. 8;

FIG. 10 is a schematic perspective view of an orbiting scroll in a scroll assembly according to one embodiment of the present invention, viewed from the wrap side;

FIG. 11 is a schematic perspective view of an orbiting scroll in a scroll assembly according to one embodiment of the present invention, viewed from the side of the end plate;

FIG. 12 is a top view of an orbiting scroll in a scroll assembly according to one embodiment of the present invention;

FIG. 13 is a schematic perspective view of a base in a scroll assembly according to one embodiment of the present invention;

FIG. 14 is another perspective view of a base in a scroll assembly according to an embodiment of the present invention;

FIG. 15 is a schematic top view of a swirling device according to an embodiment of the invention; and

FIG. 16 is a cross-sectional view of the swirling device according to an embodiment of the present invention taken along line A-A in FIG. 15.

Detailed Description

The following description of the preferred embodiment(s) 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.

First, the structure of a conventional scroll assembly 100 will be described with reference to fig. 1 and 2. FIG. 1 illustrates an exploded view of a prior art scroll assembly 100, and FIG. 2 illustrates a perspective view of an Oldham ring 130 used in the scroll assembly 100.

As shown in fig. 1, scroll assembly 100 includes a non-orbiting scroll 110, an orbiting scroll 120, an oldham ring 130, a thrust plate 140, and a main bearing housing body 150, which are mounted together in the order shown in fig. 1, and are fixed to each other by a sleeve 170 and a screw 160 to constitute scroll assembly 100.

In the configuration of FIG. 1, Oldham ring 130 is disposed between orbiting scroll 120 and thrust plate 140, but is configured to engage both non-orbiting scroll 110 and orbiting scroll 120. Fig. 2 shows the structure of the oldham ring 130. The oldham ring 130 has an annular body 131 with two pairs of engagement keys provided on the annular body 131, a first pair of engagement keys 132a, 132b for engaging with corresponding keyways (not shown) on the non-orbiting scroll 110 and a second pair of engagement keys 133a, 133b for engaging with corresponding keyways (not shown) on the orbiting scroll 120. During operation, the first and second pairs of engagement keys 132a, 132b, 133a, 133b, respectively, move within the corresponding keyways. Since the non-orbiting scroll 110 is a fixed member, the orbiting scroll 120 can be prevented from rotating while allowing the orbiting scroll 120 to orbit with respect to the non-orbiting scroll 110.

Such an oldham 130 with four keys 132a, 132b and 133a, 133b may effectively prevent the orbiting scroll 120 from rotating with respect to the non-orbiting scroll 110, but such an oldham 130 has some problems during operation. In the working process, due to the inertia effect, the cross slip ring is easy to repeatedly collide between the movable vortex end plate and the fixed vortex end plate in the working process, and periodic inclined vibration and noise are generated. Also, since the oldham ring 130 has the annular body 131 and is subjected to a torsional moment during operation, it may cause torsional deformation of the oldham ring 130, which may in turn cause a reduction in contact area of the keys 132a, 132b and 133a, 133b and accelerate wear of key surfaces, which may also cause an increase in vibration and noise of the scroll apparatus.

The present invention proposes a solution that reduces or even eliminates the above mentioned problems, and in particular proposes a new scroll assembly and a scroll device comprising such a scroll assembly. A scroll assembly and a scroll apparatus according to the present invention will be described with reference to fig. 3 to 16.

Referring first to FIGS. 3, 4 and 5, shown therein are top and cross-sectional views of a scroll assembly according to one embodiment of the present invention and a top view of scroll assembly 200 with non-orbiting scroll 220 removed. The scroll assembly 200 of the drawings is primarily comprised of: a fixed scroll 220, an orbiting scroll 210 eccentrically installed to face the fixed scroll 220, and an anti-rotation mechanism. The anti-rotation mechanism is mainly used to prevent the orbiting scroll 210 from rotating during operation. According to the principle of the present invention, the autorotation prevention mechanism comprises a first member 251 and a second member 252 (shown in fig. 4) independent from each other, each of the first member 251 and the second member 252 having a first joint 253 and a second joint 254 (shown in fig. 4, 5) for attachment to a support structure (not shown in the figures) of the orbiting scroll 210 and the non-orbiting scroll 220 or the scroll device 1 (shown in fig. 16), respectively. This support structure of the scroll apparatus 1 may be a support structure for supporting the scroll assembly 200 or a dedicated support structure for providing the first member 251 and the second member 252, specific examples of which will be described below.

With this arrangement described above, it is possible to prevent the orbiting scroll 210 from spinning while allowing the orbiting scroll 210 to orbit with respect to the non-orbiting scroll 220. The present invention employs an anti-rotation mechanism different from the existing oldham ring, that is, two (or more) moving members independent of each other are employed instead of the oldham ring, so as to prevent the orbiting scroll 210 from rotating while allowing the orbiting scroll 210 to normally rotate with respect to the non-orbiting scroll 220.

By employing the first member 251 and the second member 252 independently of each other, the annular body is no longer required, thereby eliminating torsional distortion associated with the annular body, thereby enabling vibration and noise due to torsional distortion to be significantly reduced or even eliminated. In addition, when the oldham ring is adopted, the vibration and noise of the scroll assembly have a direct relationship with the weight of the oldham ring, and the vibration and noise are increased as the weight is increased. However, according to the principles of the present invention, the anti-rotation mechanism is configured as the independent first and second members 251 and 252, no longer having an annular body, which enables the weight of the anti-rotation mechanism to be significantly reduced, thereby enabling the vibration and noise of the scroll assembly to be significantly reduced, even in the case where the first and second members 251 and 252 are light in weight, the vibration caused by the anti-rotation mechanism is negligible. Thus, the scroll assembly 200 of the present invention effectively suppresses or even eliminates undesirable vibrations and noise in the case of using the oldham ring by providing the anti-rotation mechanism having a significantly reduced weight and a simple structure instead of the existing oldham ring.

The structure and various embodiments of the scroll assembly 200 according to the present invention will be described below with reference to the drawings.

According to the principles of the present invention, the predetermined movement trace of the anti-rotation mechanism may be designed in various ways for the purpose of allowing the orbiting scroll 210 to normally move while preventing the orbiting scroll 210 from rotating. In one embodiment, the first and second junctions 253 and 254 are designed to be movable along a predetermined trajectory with respect to the orbiting scroll 210 and the non-orbiting scroll 220 or the support structure, respectively, and in particular, the first junction 253 is disposed to be movable along a first trajectory with respect to the orbiting scroll 210 and the second junction 254 is disposed to be movable along a second trajectory with respect to the non-orbiting scroll 220 or the support structure. Here, the first and second trajectories may be designed according to a desired movement trajectory of orbiting scroll 210 with respect to non-orbiting scroll 220 (which has been determined when designing the scroll assembly).

According to an embodiment of the present invention, the movement along the first trajectory and the second trajectory may be set as follows. The first engaging portion 253 is provided to be slidable (reciprocatable) in one direction (first direction) with respect to the orbiting scroll 210, and the second engaging portion 254 is provided to be slidable (reciprocatable) in another different direction (second direction) at an angle to the above direction with respect to the base or the non-orbiting scroll 220. At this time, the first and second trajectories are linear trajectories in the first and second directions, respectively. Based on this design, during operation, first member 251 and second member 252 can slide relative to orbiting scroll 210 (in a first direction) as well as non-orbiting scroll 220 or the support structure (in a second direction). The sliding motion in both directions may be synthesized into a motion along a specific curved trajectory, i.e., a rotational motion of the orbiting scroll 210 with respect to the non-orbiting scroll 220. Meanwhile, since the second engaging portions 254 of the first and second members 251 and 252 are attached to the non-orbiting scroll 220 or the bearing structure of the scroll device 1, the orbiting scroll 210 can be prevented from rotating.

In general, the first and second directions described above may be at any angle relative to each other. The sliding strokes, i.e., the distances to slide in the first and second directions, of the first and second engaging parts 253 and 254 may be designed according to the angle formed by the first and second directions and based on the desired movement locus of the orbiting scroll 210. It should be noted that, as the angle between the first direction and the second direction changes, the sliding distance along the first direction and the second direction also changes. Preferably, the first direction and the second direction may be designed to be orthogonal to each other, which is a convenient design that may avoid a too long sliding stroke in a certain direction.

The above is a description of the arrangement and movement of the rotation preventing mechanism of the present invention, and a specific structure for implementing the arrangement and movement will be described below with reference to the accompanying drawings.

Referring to fig. 6 to 9, there is shown an exemplary embodiment of the rotation preventing mechanism according to the present invention. The first member 251 is shown only by way of example, and the second member 252 has the same configuration (however, it is contemplated that the configuration of the second member 252 may also be different from the configuration of the first member 251). As shown in fig. 6, the first member 251 adopts an "i" shaped structure, which is the same configuration as shown in fig. 4. As is apparent from fig. 7, the width of the first engagement portion 253 is greater than the width of the second engagement portion 254, and the width of the first engagement portion 253 is increased in order to provide a larger sliding contact area for smoother sliding movement. When mounted in place, the surface 253a of the first engagement portion 253 and the surface 253b (shown in fig. 8) opposite thereto serve as a first pair of sliding contact surfaces (defining a first direction), and enlarging the width of the first engagement portion 253 obviously contributes to increasing the sliding contact area. In contrast, the surfaces 254a and 254b (shown in fig. 7) of the second engagement portion 254 serve as a second pair of sliding contact surfaces (defining a second direction), and the second sliding contact surfaces having a desired contact area can be obtained by designing the longitudinal length of the first member 251. Further, as is clear from fig. 7, the first pair of sliding contact surfaces 253a, 253b is substantially orthogonal to the second pair of sliding contact surfaces 254a, 254b, and thus the first direction in which the first engaging portion 253 slides is also substantially orthogonal to the second direction in which the second engaging portion 254 slides. If the angle formed by the first direction and the second direction is to be changed, the angle formed by the first pair of sliding contact surfaces 253a and 253b and the second pair of sliding contact surfaces 254a and 254b may be changed.

Further, as can be seen from fig. 6 and 7, a shoulder portion 255 is formed below the second engagement portion 254, and this shoulder portion 255 serves to prevent the first member 251 from falling off from the mounting site on the non-orbiting scroll 220 or the support structure after the first member 251 is mounted in place.

In addition to the "I" shaped structure shown in the figures, the first member 251 and the second member 252 may also have a "T" shaped, rectangular or stepped configuration. For example, the "T" configuration is shown with the shoulder 255 of the "I" configuration removed. Further, in order to increase the mechanical strength of the first member 251 and the second member 252, a corner of the first member 251 and the second member 252 may be rounded in order to reduce stress concentration.

In accordance with the principles of the present invention, to achieve good mechanical strength while minimizing mass, the first and second members 251, 252 may be made of a lightweight metal or alloy material and/or coated with a wear resistant material coating, for example, the first and second members 251, 252 may be made of an aluminum alloy or have an aluminum alloy coating. Of course, any other suitable material is possible, for example, suitable cemented carbide may be used to make the first and second members 251, 252, or a cemented carbide coating may be applied thereto.

With continued reference to fig. 10-12, the structure of orbiting scroll 210 of scroll assembly 200 according to the present invention will now be described.

Like the conventional orbiting scroll, the orbiting scroll 210 shown in the drawing mainly includes an end plate 211, a wrap 212, and a hub 215. Specifically, two bosses 213, 214 (shown in fig. 12) are formed on the end plate 211 of the orbiting scroll 210, and the first engaging portions 253 of the first and second members 251, 252 are fitted into the two bosses 213, 214. Specifically, the two lugs 213 and 214 form first sliding grooves 216 and 217, and the first engaging portions 253 of the first member 251 and the second member 252 are respectively accommodated in the corresponding first sliding grooves 216 and 217 and are slidable relative to the corresponding first sliding grooves 216 and 217.

Preferably, the two lugs 213, 214 (i.e., the two first chutes 216, 217) of the orbiting scroll 210 may be disposed in the following manner: such that the line connecting the first runners 216, 217 formed on the two lugs 213, 214 (in particular, the line connecting the geometric centers of the first runners 216, 217) is offset from the center of the orbiting scroll 210, as best shown in fig. 12. As such, the radial dimension of orbiting scroll 210, and therefore scroll assembly 200, may be reduced. Of course, in other embodiments, the two lugs 213, 214 and thus the two first sliding grooves 216, 217 may also be arranged diametrically opposite along the orbiting scroll 210, i.e. the line connecting the first sliding grooves 216, 217 passes through the center of the orbiting scroll 210.

In particular, in the embodiment of fig. 10, the lugs 213, 214 and therefore the first runners 216, 217 are formed integrally with the orbiting scroll 210, which configuration is advantageous in terms of simplifying the machining and reducing the cost.

Next, the structure of the non-orbiting scroll 220 of the scroll assembly 200 of the present invention and the support structure for providing the first and second members 251 and 252 will be described, which also relate to a specific installation manner of the second engagement portion 254 of the first and second members 251 and 252.

As described above, the second junctions 254 of the first and second members 251, 252 may be mounted to the non-orbiting scroll 220 or the support structure of the scroll apparatus 1. Specifically, in the case where the second joint portion 254 is attached to the support structure of the scroll apparatus 1, the structure shown in fig. 13 and 14 may be employed.

In embodiments where the second joint 254 is attached to the non-orbiting scroll 220, the second joint 254 may be directly attached to an end plate of the non-orbiting scroll 220; alternatively, the second engagement portion 254 may be alternatively designed as an additional structure attached to the outer circumference of the end plate of the non-orbiting scroll 220, such as a lug formed at the outer circumference of the end plate. If the second engagement portion 254 is designed to be attached to an end plate of the non-orbiting scroll 220, a second slide groove for receiving the second engagement portion 254 of each of the first and second members 251 and 252 is formed on the end plate, and the second engagement portion 254 can slide relative to the second slide groove. Also, the thickness of the end plate may be increased in consideration of the strength requirement. If the second engagement portion 254 is designed as a lug attached to the periphery of the non-orbiting scroll 220, a second runner for receiving the second engagement portion 254 is formed in the lug. It should be noted that after scroll assembly 200 is assembled, first sliding grooves 216 and 217 of orbiting scroll 210 and second sliding grooves of non-orbiting scroll 220 form an angle, which is the same as the angle formed by the first direction and the second direction in which first member 251 and second member 252 slide. Since the mounting angle of the orbiting scroll 210 with respect to the non-orbiting scroll 220 is set, in order to ensure that the first and second chutes 216 and 217 form a desired angle in an assembled state, it is necessary to properly design the positions of the first chutes 216 and 217 on the orbiting scroll 210 and the positions of the second chutes on the non-orbiting scroll 220.

Although a separate view of the non-orbiting scroll 220 and the second runner provided thereon according to the present invention is not shown in the drawings, it should be understood that the non-orbiting scroll 220 also has a wrap similar to the prior art and a mounting hole through which the non-orbiting scroll 220 is mounted to the base using a screw 260 (visible in fig. 4). Also, the second runner on non-orbiting scroll 220 may be designed in a similar manner with reference to first runners 216, 217 on orbiting scroll 210.

In embodiments where the second joint 254 is attached to the support structure of the scroll apparatus 1, additional components may be employed to achieve attachment to the second joint 254. The following is a detailed description with reference to fig. 13 and 14.

According to an embodiment of the present invention, the support structure of the scroll apparatus 1 may be a main bearing housing for supporting the scroll assembly 200 or a structure (e.g., a lug) for disposing the first member 251 and the second member 252 disposed inside the housing 11 (shown in fig. 16) of the scroll apparatus 1. The main bearing housing of the scroll apparatus 1 may include multiple components, for example, in the example shown in fig. 4, the main bearing housing may include a thrust device (e.g., thrust plate 230) and a bearing housing body 240, in which case the second interface 254 may be attached to the thrust plate 230 or the bearing housing body 240. Specifically, in the example of fig. 4, the second engagement portion 254 is attached to the thrust plate 230. Fig. 13 and 14 show the thrust plate 230 alone, with the second joint 254 attachable. However, in other embodiments, the second engagement portion 254 may also be attached to the bearing housing body 240, or the second engagement portion 254 may also be attached to a lug (not shown) inside the housing 11 of the scroll apparatus 1. In summary, the anti-rotation function of the present invention is achieved by providing the second engagement portion 254 on a relatively fixed component within the scroll device 1.

The thrust plate 230 in fig. 13 and 14 mainly includes a base plate 231 and a bearing block 232. In addition, the thrust plate 230 includes two additional mounting blocks 233, 234 for receiving the second engagement portion 254. Specifically, the mounting blocks 233, 234 have second slide grooves 235, 236 formed therein for receiving the second engagement portions 254, and as shown in the drawings, the shape of these second slide grooves 235, 236 matches the shape of the first member 251 shown in fig. 6. When the first member 251 and the second member 252 of the "i" shape shown in fig. 6 are used (although not shown, the second member 252 has the same configuration), receiving grooves 235a and 236a for receiving the shoulder portions 255 are formed in the lower portions of the second sliding grooves 235 and 236. Of course, the shape of the second runners 235, 236 may be adjusted depending on the particular shape of the first member 251 and the second member 252.

Note that, in order to achieve smooth sliding, the first engagement portion 253 and the second engagement portion 254 may be accommodated in the first slide grooves 216, 217 and the second slide grooves 235, 236 in a clearance fit manner, respectively. Also, this clearance fit also provides good guidance.

The basic construction and operating principle of the scroll assembly according to the present invention has been described above with reference to the examples. It should be noted that the scroll assembly 200 of the present invention may include a plurality of first members 251 or a plurality of second members 252, and the desired technical effects of the present invention can be achieved by adopting the above-defined arrangement.

Further in accordance with the principles of the present invention, there is also provided a scroll apparatus 1 employing the scroll assembly 200 described above. One embodiment of the swirling device 1 of the present invention is shown in figures 15 and 16. The scroll assembly 200 is mounted on the main shaft 12 inside the housing 11, and the scroll assembly 200 is started by driving the orbiting scroll 210 via the main shaft 12.

The scroll apparatus 1 may be a scroll compressor 1, specifically, a vertical scroll compressor, as shown in fig. 16. Of course, the scroll assembly 200 of the present invention may also be applied to any other scroll apparatus, such as a scroll expander, a scroll engine, a scroll pump, etc.

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 assembly for a scroll apparatus, said scroll assembly (200) comprising:

a non-orbiting scroll (220);

an orbiting scroll (210), the orbiting scroll (210) being installed to be opposed to the non-orbiting scroll (220); and

an anti-rotation mechanism including a first member (251) and a second member (252) independent of each other, a first engaging portion (253) of each of the first member (251) and the second member (252) being attached to the orbiting scroll (210) and a second engaging portion (254) being attached to the non-orbiting scroll (220) or a support structure of the scroll device (1) so that the orbiting scroll (210) can orbit relative to the non-orbiting scroll (220) without rotating,

characterized in that the first engaging portion (253) has a first sliding-contact surface (253a) and a first non-sliding-contact surface, the second engaging portion (254) has a second sliding-contact surface (254a) and a second non-sliding-contact surface, the width of the first sliding-contact surface (253a) in the sliding direction of the first sliding-contact surface (253a) is larger than the width of the second non-sliding-contact surface, and the width of the second sliding-contact surface (254a) in the sliding direction of the second sliding-contact surface (254a) is equal to the width of the first non-sliding-contact surface.

2. The scroll assembly of claim 1, wherein said first joint (253) is movable along a first trajectory relative to said orbiting scroll (210) and said second joint (254) is movable along a second trajectory relative to said non-orbiting scroll (220) or said support structure.

3. The scroll assembly of claim 2, wherein said first track is a linear track in a first direction and said second track is a linear track in a second direction at an angle to said first direction, said first and second joints (253, 254) being slidable in said first and second directions, respectively.

4. The scroll assembly according to claim 3, wherein said first direction is orthogonal to said second direction.

5. The scroll assembly according to claim 3, wherein said orbiting scroll (210) is provided with a first runner (216, 217) extending in said first direction for receiving said first engagement portion (253), and said support structure or said non-orbiting scroll (220) is provided with a second runner extending in said second direction for receiving said second engagement portion (254).

6. The scroll assembly according to claim 5, wherein said first and second engagement portions (253, 254) are received in said first and second runners (216, 217), respectively, in a clearance fit.

7. The scroll assembly of claim 5, wherein a line of said first chute (216, 217) is offset from a center of said orbiting scroll (210) or a line of said first chute (216, 217) passes through a center of said orbiting scroll (210).

8. The scroll assembly according to claim 5, wherein said first runner (216, 217) is integrally formed on said orbiting scroll (210).

9. The scroll assembly according to any one of claims 5-8, wherein said second engagement portion (254) is attached to said non-orbiting scroll (220), said second runner being formed at a periphery of said non-orbiting scroll (220).

10. The scroll assembly according to any one of claims 5-8, wherein said second engagement portion (254) is attached to said support structure, said second runner (235, 236) being disposed at a periphery of said support structure.

11. The scroll assembly according to claim 10, wherein said support structure comprises a main bearing housing of said scroll device (1) or a lug provided inside a housing (11) of said scroll device (1).

12. The scroll assembly of claim 11, wherein the main bearing housing comprises a thrust runner (230) and a bearing housing body (240), the second runner (235, 236) being provided on the thrust runner (230) or the bearing housing body (240).

13. The scroll assembly according to claim 12, wherein a periphery of the thrust device (230) or the bearing housing body (240) is provided with a mounting block (233, 234), the second runner (235, 236) being formed in the mounting block (233, 234).

14. The scroll assembly according to claim 11, wherein said second runner (235, 236) is provided on said lug inside said housing (11) of said scroll apparatus (1).

15. The scroll assembly according to claim 1, wherein a lower portion of said second engagement portion (254) is provided with a shoulder portion (255).

16. The scroll assembly according to claim 1, wherein corners of said first and second members (251, 252) are radiused.

17. The scroll assembly according to any one of claims 1-8, wherein said first member (251) and said second member (252) are made of cast iron or an aluminum alloy or have an aluminum alloy coating.

18. The scroll assembly of any one of claims 1-8, wherein the anti-rotation mechanism comprises a plurality of first members or a plurality of second members.

19. A scroll device, characterized in that the scroll device (1) comprises a scroll assembly (200) according to any one of claims 1-18.

20. The scroll device according to claim 19, wherein the scroll device (1) is a scroll compressor.