Anti-rotation structure, pump body assembly and compressor

Abstract

The present invention provides an anti-rotation structure, a pump body assembly and a compressor, relating to the field of compressors, and solving the technical problem that the cross slip ring as an anti-rotation structure makes the operation of the moving scroll plate unstable and the stability poor. The anti-rotation structure includes an installation part located on the moving scroll plate and an assembly part located on the bracket. The assembly part extends into the installation part and allows the installation part to rotate around its periphery. When the moving scroll plate revolves around the stationary scroll plate at the upper end of the bracket, the assembly part can always abut against different positions on the inner wall of the installation part to limit the self-rotation of the moving scroll plate. The present invention prevents the self-rotation of the moving scroll plate by restricting the rotation of the installation part by the assembly part; eliminates the cross slip ring structure and prevents the cross slip ring from being easily subjected to shear force and causing eccentric wear; the moving scroll plate can be directly arranged in contact with the bracket, increasing the contact area between the moving scroll plate and the bracket, preventing the moving scroll plate from tipping over, and enabling the moving scroll plate to operate more smoothly and the structure to be more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to an anti-rotation structure, a pump body assembly and a compressor. Background Art

[0002] The pump body of a traditional scroll compressor mainly includes a moving scroll disk, a stationary scroll disk, a crankshaft, a bracket and a cross slip ring. Among them, the moving scroll disk and the stationary scroll disk cooperate to form a compression chamber, and the relative movement between the moving scroll disk and the stationary scroll disk realizes the compression of the working medium in the compression chamber. When in motion, the motor drives the crankshaft to rotate, and the crankshaft drives the central axis of the moving scroll disk to rotate around the central axis of the stationary scroll disk (rotating with an eccentricity R), but the moving scroll disk itself does not rotate around its own central axis to achieve the compression of the fluid.

[0003] In the prior art, in order to prevent the moving scroll disk from self-rotating, a cross slip ring structure is usually adopted. The cross slip ring is located on the upper end surface of the bracket. One set of keys is in contact with the key slots on the moving scroll disk, and the other set of keys is in contact with the key slots on the stationary scroll disk. When the moving scroll disk makes a translational movement around the stationary scroll disk, the keys on the cross slip ring can reciprocate linearly along the corresponding key slots in cooperation, that is, the movement of the moving scroll disk in cooperation with the cross slip ring synthesizes a translational movement in which the moving scroll disk revolves around the stationary scroll disk and cannot rotate by itself.

[0004] The applicant of the present invention has found that the prior art has at least the following technical problems:

[0005] 1. The cross slip ring is located between the bracket and the moving scroll disk, causing the moving scroll disk not to contact the bracket. When the moving scroll disk operates, it is prone to tipping over, and the stability is poor; the operation stability of the compressor is poor.

[0006] 2. The cross slip ring structure in the prior art is easily affected by shear force, making the operation of the moving scroll disk and the stationary scroll disk unstable, resulting in eccentric wear;

[0007] 3. The matching structure between the keys in the cross slip ring and the key slots on the moving scroll disk or the stationary scroll disk is relatively closed, which is likely to cause less local oil supply, resulting in wear of the moving scroll disk, the stationary scroll disk and the bracket components. Summary of the Invention

[0008] The purpose of the present invention is to provide an anti-rotation structure, a pump body assembly and a compressor to solve the technical problem that the cross slip ring as an anti-rotation structure in the prior art makes the operation of the moving scroll disk unstable and the stability is poor; the many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0009] To achieve the above purpose, the present invention provides the following technical solutions:

[0010] The anti-rotation structure provided by the present invention includes an installation part on the moving scroll plate and an assembly part on the bracket, where:

[0011] The assembly part extends into the installation part and allows the installation part to rotate around its periphery. When the moving scroll plate revolves around the stationary scroll plate, the assembly part can always abut against different positions on the inner wall of the installation part to limit the self-rotation of the moving scroll plate.

[0012] Preferably, the installation part is a hole, and the inner wall of the hole always abuts against the outer wall of the assembly part.

[0013] Preferably, the assembly part is a pin extending into the hole.

[0014] Preferably, all the assembly parts are arranged on the outer periphery of the upper end face of the bracket.

[0015] Preferably, the installation part is a through hole provided on the outer periphery of the moving scroll plate.

[0016] Preferably, the center line at the center position of all the installation parts is collinear with the central axis of the moving scroll plate.

[0017] Preferably, the center line at the center position of all the assembly parts is collinear with the central axis of the stationary scroll plate.

[0018] Preferably, there is a hole passage in the assembly part, and a fastener passes through the stationary scroll plate and extends into the hole passage to lock the stationary scroll plate and the bracket.

[0019] Preferably, there is an internal thread on the hole passage, one end of the fastener abuts against the upper end face of the stationary scroll plate, and the other end is threadedly connected to the hole passage.

[0020] Preferably, there is a lubricating layer on the inner wall of the installation part for reducing the friction between the installation part and the assembly part.

[0021] The present invention also provides a pump body assembly, including a bracket, a moving scroll plate, a stationary scroll plate, and the above anti-rotation structure. The moving scroll plate is arranged in contact with the upper end face of the bracket and the lower end face of the stationary scroll plate.

[0022] Preferably, there is a first oil passage channel on the bracket that communicates with its internal oil sump for supplying oil between the bracket and the moving scroll plate.

[0023] Preferably, the first oil passage channel includes a first end face oil passage and a supply oil passage, where: the first end face oil passage extends horizontally on the upper end face of the bracket, the supply oil passage is inclined, and its upper end is connected to the first end face oil passage, and its lower end is connected to the oil sump.

[0024] Preferably, a second oil passage communicating with the first oil passage is provided on the moving scroll plate for supplying oil between the moving scroll plate and the stationary scroll plate.

[0025] Preferably, the second oil passage includes a second end face oil passage and a longitudinal oil passage which are connected and communicated, wherein:

[0026] The longitudinal oil passage penetrates through the upper end face and the lower end face of the moving scroll plate and communicates with the first oil passage, and the second end face oil passage extends horizontally on the upper end face of the moving scroll plate.

[0027] Preferably, the part of the first oil passage located on the upper end face of the bracket and the part of the second oil passage located on the upper end face of the moving scroll plate are Y-shaped or crescent-shaped.

[0028] The present invention also provides a compressor including the above-mentioned pump body assembly.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The anti-rotation structure provided by the present invention sets an installation part on the moving scroll plate and an assembly part on the bracket. The rotation of the installation part is restricted by the assembly part to prevent the moving scroll plate from rotating. The structure is simple and compact; the above structure eliminates the cross slip ring structure and prevents the cross slip ring from being easily subjected to shear force and causing eccentric wear; the moving scroll plate can be directly attached to the bracket, increasing the contact area between the moving scroll plate and the bracket, preventing the moving scroll plate from tipping over, and the moving scroll plate runs more smoothly and the structure is more stable.

[0031] 2. The pump body assembly provided by the present invention also has the advantages that the moving scroll plate runs more smoothly and the pump body assembly structure is stable due to the above anti-rotation structure.

[0032] 3. The compressor provided by the present invention has the advantages of stable structure and smooth operation of the compressor due to the above pump body assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic diagram of the anti-rotation structure of the present invention;

[0035] Figure 2 It is a schematic cross-sectional structure diagram of the pump body assembly of the present invention;

[0036] Figure 3 It is a schematic top view structure diagram of a pump body assembly;

[0037] Figure 4 It is a schematic structure diagram of a moving scroll plate;

[0038] Figure 5 It is a schematic structure diagram of a bracket;

[0039] Figure 6 It is a schematic structure diagram of an oil circuit on the bracket;

[0040] Figure 7 It is a schematic structure diagram of an end face oil circuit on the moving scroll plate.

[0041] In the figure, 1 is the moving scroll plate; 11 is the installation part; 12 is the lubricating layer; 13 is the second oil circuit channel; 131 is the second end face oil circuit; 132 is the longitudinal oil circuit;

[0042] 2 is the bracket; 21 is the assembly part; 211 is the hole; 22 is the oil sump; 23 is the first oil circuit channel; 231 is the supply oil circuit; 232 is the first end face oil circuit;

[0043] 3 is the stationary scroll plate;

[0044] 4 is the crankshaft;

[0045] 5 is the fastener. Specific embodiments

[0046] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0048] In the prior art, the structure for preventing the rotation of the moving scroll disk is usually a cross slip ring arranged between the bracket and the moving scroll disk. One set of keys on the cross slip ring is in contact with the key slots on the moving scroll disk, and the other set of keys is in contact with the key slots on the stationary scroll disk. When the moving scroll disk revolves and translates around the stationary scroll disk, the keys on the cross slip ring can reciprocate linearly along the corresponding key slots. In the above structure, the cross slip ring is vulnerable to shear force, resulting in eccentric wear; the moving scroll disk is not in direct contact with the bracket, and it is prone to overturn during operation; the above two aspects lead to unstable operation of the moving scroll disk when revolving and translating around the stationary scroll disk.

[0049] Embodiment 1

[0050] In view of the above problems, as shown in Figure 1 and Figure 2 This embodiment provides an anti-rotation structure, including an installation part 11 on the moving scroll disk 1 and an assembly part 21 on the bracket 2, where: the assembly part 21 extends into the installation part 11 and allows the installation part 11 to rotate around its periphery. When the moving scroll disk 1 revolves around the stationary scroll disk 3 at the upper end of the bracket 2, the assembly part 21 can always abut against different positions on the inner wall of the installation part 11 to limit the rotation of the moving scroll disk 1.

[0051] Specifically, the same as in the prior art, the revolution of the moving scroll disk 1 around the stationary scroll disk 3 means that the central axis of the moving scroll disk rotates around the central axis of the stationary scroll disk.

[0052] For the stability of the structure, the installation part 11 is an integrally formed part on the moving scroll disk 1, and the assembly part 21 is an integrally formed part on the bracket 2. The movement between the assembly part 21 and the installation part 11 is a restricted relative rotation.

[0053] After assembly, the installation part 11 and the assembly part 21 are always in contact, and the mating structure of the installation part 11 and the assembly part 21 can limit the rotation of the installation part 11 around its own axis (limit self-rotation). As the moving scroll disk 1 revolves and translates, the contact position between the installation part 11 and the assembly part 21 changes continuously, without affecting the normal movement of the moving scroll disk 1.

[0054] The anti-rotation structure of this embodiment sets the installation part 11 on the moving scroll disk 1 and the assembly part 21 on the bracket 2, and prevents the rotation of the moving scroll disk 1 by restricting the rotation of the installation part 11 by the assembly part 21. The above structure eliminates the cross slip ring structure, preventing eccentric wear caused by the cross slip ring being vulnerable to shear force; the moving scroll disk 1 can be directly attached to the bracket 2, increasing the contact area between the moving scroll disk 1 and the bracket 2, preventing the moving scroll disk 1 from overturning, and the moving scroll disk 1 operates more smoothly and the structure is more stable.

[0055] In addition, in order to enable the installation part 11 to rotate outside the assembly part 21 and abut against different positions on the inner wall of the installation part 11 during rotation. Refer to Figure 1 and Figure 2 As shown, there is a movement space between the assembly part 21 and the installation part 11.

[0056] Compared with the closed structure of the reciprocating linear motion between the key and the keyway, the lubricating oil can easily enter the internal movement space, preventing the occurrence of insufficient oil supply and local wear.

[0057] In this embodiment, a specific implementation manner of the installation part 11 and the assembly part 21 is given. As an alternative implementation manner, refer to Figures 1-4 As shown, the above installation part 11 is a hole, and the inner wall of the hole always abuts against the outer wall of the assembly part 21. In other words, there is always an abutting position on the inner wall of the hole that cooperates with the assembly part.

[0058] Specifically, when the moving scroll 1 revolves around the stationary scroll 3, the central axis of the hole rotates around the central axis of the assembly part 21.

[0059] That is, the central axis of each hole (installation part 11) is not collinear with the central axis of the assembly part 21.

[0060] The above hole is a circular hole. Using the hole as the installation part 11 has a simple structure and is easy to set. The inner wall of the hole abuts against the assembly part 21, and the shape of the hole facilitates the outer wall of the assembly part 21 to restrict the rotation of the hole around its own axis.

[0061] As an alternative implementation manner, refer to Figure 1 、 Figure 2 and Figure 5 As shown, the assembly part 21 is a pin inserted into the hole.

[0062] In order to facilitate ensuring the stability of the movement of the moving scroll 1, the pin is cylindrical. When the moving scroll revolves around the stationary scroll, the inner wall of the hole always abuts against the inner wall of the pin to restrict the rotation of the hole (i.e., the rotation of the moving scroll).

[0063] When the moving scroll 1 is located at the upper end of the bracket 2 and revolves around the stationary scroll 3, the central axis of the hole rotates around the central axis of the hole. In the above structure, when the moving scroll 1 has a tendency to rotate, the outer wall of the pin can restrict the rotation of the hole on the moving scroll 1, that is, restrict the rotation of the moving scroll 1, ensure that the moving scroll 1 rotates around the central axis of the stationary scroll 3, prevent the moving scroll 1 from rotating around its own axis, and cooperate with the stationary scroll 3 to compress the working medium.

[0064] For the stability of the structure, as an alternative implementation manner, refer to Figure 1 and Figure 5As shown, the number of the assembly parts 21 is multiple, and all the assembly parts 21 are arranged on the outer periphery of the upper end face of the bracket 2.

[0065] In the figure, four assembly parts 21 are arranged at intervals on the upper end face of the bracket 2, and it is not limited to this specific shape (at least two). The positions and numbers of the installation parts 11 correspond to those of the assembly parts 21.

[0066] Combined with Figure 4 and Figure 5 , two sets of opposite assembly parts 21 are arranged on the outer periphery of the bracket 2, and two sets of opposite installation parts 11 are arranged on the outer periphery of the moving scroll disk 1. When the moving scroll disk 1 revolves and translates around the stationary scroll disk 3, referring to Figure 2 , for the pins located in a set of opposite holes, the contact points of the pins with the holes are all on the same side of the central axis of the holes.

[0067] Through the cooperation between the bracket 2 and the outer periphery of the moving scroll disk 1, the movement of the moving scroll disk 1 around the stationary scroll disk 3 can be made more stable.

[0068] As an optional implementation manner, referring to Figure 4 , the above installation part 11 is a through hole provided on the outer periphery of the moving scroll disk 1.

[0069] The pin on the bracket 2 can be arranged through the above through hole to prevent the pin from detaching from the hole and ensure the stability of the structure.

[0070] To ensure the stability of the structure, as an optional implementation manner, referring to Figure 3 and Figure 7 , the central line at the central position of all the installation parts 11 is collinear with the central axis of the moving scroll disk 1.

[0071] The installation parts 11 (holes) move synchronously with the rotation of the moving scroll disk 1, and the operation is stable. As an optional implementation manner, referring to Figure 3 and Figure 5 , the central line at the central position of all the assembly parts 21 is collinear with the central axis of the stationary scroll disk 3. In other words, the central lines of all the assembly parts are not collinear with the central lines of all the installation parts.

[0072] Since the installation parts 11 (holes) move around the central axis of the stationary scroll disk 3, the above matching structure can enable the installation parts 11 (holes) to move around the central axis of the assembly parts 21 outside the corresponding assembly parts 21 (pins), so that the outer wall of the pin can abut against the inner wall of the hole, and the moving scroll disk 1 is limited by the abutment of the pin and is difficult to rotate self.

[0073] As an optional implementation manner, combined with Figure 1 , Figure 2 and Figure 5, there is a duct 211 inside the assembly part 21. A fastener 5 passes through the stationary scroll disk 3 and extends into the duct 211 to lock the stationary scroll disk 3 and the bracket 2.

[0074] By means of the structure of the assembly part 21 (pin), a duct 211 is directly arranged inside the pin, and the fastening of the bracket 2 and the stationary scroll disk 3 is realized by the matching structure of the duct 211 and the fastener 5; there is no need for redundant connection structures and redundant connection spaces, and the structure is simple and compact. The above-mentioned fastener 5 can be a bolt or the like.

[0075] As an optional implementation manner, see Figure 2 As shown, there is an internal thread on the duct 211. One end of the fastener 5 abuts against the upper end face of the stationary scroll disk 3, and the other end is threadedly connected to the duct 211. Among them, the fastener 5 can be a bolt with a nut.

[0076] At the corresponding position of the duct 211 on the stationary scroll disk 3 and the bracket 2, there is a through hole allowing the pin to pass through, such as Figure 2 , the fastener 5 is threadedly connected to the pin passing through the through hole. And after the assembly is in place, the moving scroll disk 1 is pressed against the upper end face of the bracket 2 by the pressure of the stationary scroll disk 3, and the connection structure is stable.

[0077] During compression, among them, under the action of the axial gas force, the moving scroll disk 1 is tightly pressed against the end face of the bracket 2. Since the whole moving disk fits on the end face of the bracket 2, the running stability is maintained during operation, and the occurrence of the overturning phenomenon caused by the unstable gas force is effectively reduced.

[0078] As an optional implementation manner, in combination with Figure 1 and Figure 4 , there is a lubricating layer 12 for reducing the friction between the inner wall of the installation part 11 and the assembly. The above-mentioned lubricating layer 12 can be formed by a self-lubricating material, such as lubricating oil or the like.

[0079] By adding a self-lubricating material to the side wall of the hole (installation part 11), the contact friction can be reduced. The self-lubricating material can be fixed to the inner wall of the hole by electroplating or inlaying.

[0080] Embodiment 2

[0081] This embodiment provides a pump body assembly, see Figure 1 and Figure 2 , including a bracket 2, a moving scroll disk 1, a stationary scroll disk 3 and the above-mentioned anti-rotation structure, and the moving scroll disk 1 is arranged in contact with the upper end face of the bracket 2 and the lower end face of the stationary scroll disk 3.

[0082] Driven by the crankshaft 4, the central axis of the moving scroll disk 1 rotates around the central axis of the stationary scroll disk 3 (meanwhile, the central axis of the installation part 11 rotates around the central axis of the pin,) realizing revolution and translation, and forming a compression cavity with a changing volume with the stationary scroll disk 3. With the continuous rotation of the crankshaft 4, the entire process of suction, compression, and exhaust is realized between the moving scroll disk 1 and the stationary scroll disk 3. Among them, the moving scroll disk 1 is installed in cooperation with the stationary scroll disk 3 after being constrained by the pin, and then locked and fixed by the fastener 5 to form a sealed compression cavity.

[0083] For the pump body assembly of this embodiment, due to the above anti-rotation structure, it also has the advantages of more stable operation of the moving scroll disk 1, preventing overturning, and stable structure of the pump body assembly.

[0084] In the prior art, the structure of the key and keyway in the cross slip ring is relatively closed, with less oil supply between adjacent components and easy wear. In this embodiment, the structure of the cross slip ring is cancelled, and the remaining friction pairs still include: the friction pair formed between the bracket 2 and the moving scroll disk 1 and the friction pair between the moving scroll disk 1 and the stationary scroll disk 3. Compared with the existing cross slip ring structure, the friction pairs are reduced.

[0085] The contact area between the moving scroll disk 1 and the end face of the bracket 2 is large, which can make the operation more stable and prevent overturning during operation, but there is also a movement resistance. Considering the above problems comprehensively, there is a first oil passage 23 on the bracket 2 of this embodiment that is connected to its internal oil sump 22 for supplying oil between the bracket 2 and the moving scroll disk 1.

[0086] See Figure 2 As shown, the oil sump 22 is connected to the oil supply passage in the crankshaft 4 to supply oil into the first oil passage 23. The oil sump 22 is a component in the prior art and will not be elaborated here. The above first oil passage 23 can lubricate the friction pair between the bracket 2 and the moving scroll disk 1, reduce the wear caused by the large friction force between the two, extend the service life, and ensure the structural stability.

[0087] As an optional implementation manner, in combination with Figure 1 、 Figure 5 and Figure 6 , the above first oil passage 23 includes a first end face oil passage 232 and a supply oil passage 231, where: the first end face oil passage 232 extends horizontally on the upper end face of the bracket 2, and the supply oil passage 231 is inclined (such as Figure 6 ), and its upper end is connected to the first end face oil passage 232, and its lower end is connected to the oil sump 22.

[0088] Under the rotation of the crankshaft 4, the oil sump 22 at the tail of the moving scroll disk 1 is stirred, realizing sufficient supply of lubricating oil, ensuring that the refrigerant oil fills the supply oil passage 231 and continuously supplies it to the first end face oil passage 232, realizing the lubrication between the moving disk and the bracket 2.

[0089] Since the compression chamber is a closed cavity, there is a sealing relationship and also a friction pair between the moving scroll disk 1 and the stationary scroll disk 3. To ensure good contact lubrication, on the basis of the above structure, as an alternative embodiment, there is a second oil passage 13 on the moving scroll disk 1 that communicates with the first oil passage 23 for supplying oil between the moving scroll disk 1 and the stationary scroll disk 3.

[0090] The above-mentioned second oil passage 13 can introduce the lubricating oil in the bracket 2 to fully lubricate the friction pair on the end faces of the moving scroll disk 1 and the stationary scroll disk 3.

[0091] As an alternative embodiment, in combination with Figure 2 、 Figure 4 and Figure 5 shown, the second oil passage 13 includes a second end face oil passage 131 and a longitudinal oil passage 132 that are connected. Among them:

[0092] The longitudinal oil passage 132 runs through the upper end face and the lower end face of the moving scroll disk 1 and communicates with the first oil passage 23. The second end face oil passage 131 extends horizontally on the upper end face of the moving scroll disk.

[0093] As an alternative embodiment, the above-mentioned longitudinal oil passage 132 is vertically arranged to connect the first end face oil passage 232 and the second end face oil passage 131.

[0094] When there is too much lubricating oil in the oil sump 22 of the bracket 2, the lubricating oil flows in through the longitudinal oil passage 132 on the moving scroll disk 1 via the first end face oil passage 232, and then enters the second end face oil passage 131, realizing the lubrication between the moving scroll disk 1 and the stationary scroll disk 3 and reducing problems such as wear caused by lack of oil for the parts.

[0095] The connection of the above oil passages can ensure that the oil sump 22 in the bracket 2 supplies oil between the two friction pairs.

[0096] As an alternative embodiment, the part of the first oil passage 23 located on the upper end face of the bracket 2 and the part of the second oil passage 13 located on the upper end face of the moving scroll disk 1 are Y-shaped or crescent-shaped.

[0097] Specifically, in this embodiment, both the first end face oil passage 232 on the bracket 2 and the second end face oil passage 131 on the moving scroll disk 1 are Y-shaped or crescent-shaped. The main purpose is to extend the lubricating oil supply duration and supply amount within the operating range of the moving scroll disk 1. Of course, other shapes can also be adopted for the above two end face oil passages.

[0098] Embodiment 3

[0099] This embodiment provides a compressor, specifically a scroll compressor, including the above-mentioned pump body assembly.

[0100] The compressor provided by this embodiment has the advantages of stable structure and smooth operation of the compressor due to the above-mentioned pump body assembly.

[0101] In the description of this specification, specific features, structures, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0102] As mentioned above, the above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An anti-rotation structure, characterized in that, it includes a mounting part on the moving scroll plate and an assembly part on the bracket, wherein: the assembly part extends into the mounting part and allows the mounting part to rotate around its periphery. When the moving scroll plate revolves around the stationary scroll plate, the assembly part can always abut against different positions on the inner wall of the mounting part to limit the self-rotation of the moving scroll plate; there is a hole passage in the assembly part, and a fastener passes through the stationary scroll plate and extends into the hole passage to lock the stationary scroll plate and the bracket; there is internal thread on the hole passage, one end of the fastener abuts against the upper end face of the stationary scroll plate and the other end is threadedly connected with the hole passage.

2. The anti-rotation structure according to claim 1, characterized in that, the mounting part is a hole, and the inner wall of the hole always abuts against the outer wall of the assembly part.

3. The anti-rotation structure according to claim 2, characterized in that, the assembly part is a pin extending into the hole.

4. The anti-rotation structure according to claim 1, characterized in that, all the assembly parts are arranged on the outer periphery of the upper end face of the bracket.

5. The anti-rotation structure according to any one of claims 1-4, characterized in that, the mounting part is a through hole provided on the outer periphery of the moving scroll plate.

6. The anti-rotation structure according to any one of claims 1-4, characterized in that, the center line at the center position of all the mounting parts is collinear with the central axis of the moving scroll plate.

7. The anti-rotation structure according to claim 6, characterized in that, the center line at the center position of all the assembly parts is collinear with the central axis of the stationary scroll plate.

8. The anti-rotation structure according to claim 1 or 2, characterized in that, there is a lubricating layer on the inner wall of the mounting part for reducing the friction between the mounting part and the assembly part.

9. A pump body assembly, characterized in that, it includes a bracket, a moving scroll plate, a stationary scroll plate and the anti-rotation structure according to any one of claims 1-7, and the moving scroll plate is arranged in contact with the upper end face of the bracket and the lower end face of the stationary scroll plate.

10. The pump body assembly according to claim 9, characterized in that, there is a first oil passage on the bracket that communicates with its inner oil sump for supplying oil between the bracket and the moving scroll plate.

11. The pump body assembly according to claim 10, characterized in that, the first oil passage includes a first end face oil passage and a supply oil passage, wherein: the first end face oil passage extends horizontally on the upper end face of the bracket, the supply oil passage is inclined, and its upper end is connected to the first end face oil passage and its lower end is connected to the oil sump.

12. The pump body assembly according to claim 10, characterized in that, there is a second oil passage on the moving scroll plate that communicates with the first oil passage for supplying oil between the moving scroll plate and the stationary scroll plate.

13. The pump body assembly according to claim 12, characterized in that, the second oil passage includes a connected second end face oil passage and a longitudinal oil passage, wherein: The longitudinal oil passage runs through the upper end face and the lower end face of the moving scroll disk and is communicated with the first oil passage channel, and the second end face oil passage extends horizontally on the upper end face of the moving scroll disk.

14. The pump body assembly according to claim 12 or 13, characterized in that the part of the first oil passage channel located on the upper end face of the bracket and the part of the second oil passage channel located on the upper end face of the moving scroll disk are in a Y shape or a crescent shape.

15. A compressor, characterized in that it includes the pump body assembly according to any one of claims 9-14.

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