Scroll assembly and scroll compressor having it

Abstract

This invention provides a scroll plate assembly and a scroll compressor having the same. The scroll plate assembly includes a stationary scroll plate, a connecting seat, and a check valve assembly. The connecting seat has a first connecting portion and a second connecting portion. The first connecting portion has a flow channel for communicating with an enthalpy-increasing tube. The receiving groove of the second connecting portion and the stationary scroll plate form a receiving cavity. The side wall of the receiving cavity has an enthalpy-increasing channel communicating with a working cavity. The check valve assembly is movably disposed within the receiving cavity. The check valve assembly has a first communicating portion and has a first position that blocks the flow channel and a second position that avoids the flow channel. When the check valve assembly is in the first position, the flow channel is disconnected from the working cavity. When the check valve assembly is in the second position, the flow channel communicates with the working cavity through the first communicating portion. In this invention, the check valve assembly is disposed within the receiving cavity, eliminating the need to machine a boss on the stationary scroll plate, simplifying the structure of the stationary scroll plate, and reducing the machining cost and complexity of the stationary scroll plate.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a scroll assembly and a scroll compressor having the same. Background Technology

[0002] Enthalpy-increasing scroll compressors are widely used in various heat pump systems. The medium-pressure refrigerant enters the compression chamber directly through the enthalpy-increasing pipeline, where it mixes and compresses with the high-temperature refrigerant to achieve a cooling effect on the compressor chamber.

[0003] A check valve is installed between the enthalpy-increasing gas supply pipeline and the gas supply compression chamber. The check valve in the prior art has an enthalpy-increasing passage, a check valve seat, a valve plate, and an elastic component. The check valve seat, valve plate, and elastic component are arranged sequentially in the stationary vortex disk along the axial direction. The axial movement of the elastic component realizes the closing and opening of the check valve.

[0004] In the above scheme, the components of the check valve are distributed along the axial direction and are directly connected to the stationary vortex plate. The axial dimension of the check valve is large, which requires a large axial space of the stationary vortex plate. The stationary vortex plate needs to have a boss added in the axial direction to accommodate the installation of the check valve, which increases the difficulty of machining the stationary vortex plate. Summary of the Invention

[0005] The main objective of this invention is to provide a scroll plate assembly and a scroll compressor having the same, so as to solve the problem that the stationary scroll plate needs to be structurally modified to adapt to the axial dimensions of the check valve.

[0006] To achieve the above objectives, according to one aspect of the present invention, a scroll disk assembly is provided, comprising: a stationary scroll disk; a connecting seat having a first connecting portion and a second connecting portion, the first connecting portion having a flow channel for communicating with an enthalpy-increasing tube, the second connecting portion having a receiving groove, the second connecting portion being connected to the stationary scroll disk, the receiving groove and the stationary scroll disk forming a receiving cavity, the side wall of the receiving cavity having an enthalpy-increasing channel communicating with a working cavity, the working cavity being a cavity formed between the stationary scroll disk and the moving scroll disk for absorbing and compressing refrigerant; and a check valve assembly movably disposed within the receiving cavity, the check valve assembly having a first communicating portion, the check valve assembly having a first position blocking the flow channel and a second position avoiding the flow channel, the check valve assembly being in the first position, the flow channel being disconnected from the working cavity, and the check valve assembly being in the second position, the flow channel being communicated with the working cavity through the first communicating portion.

[0007] Furthermore, the check valve assembly includes: a check valve plate, with a first connecting portion located on the check valve plate; a guide seat, with a first end of the guide seat abutting against the groove wall of the receiving groove via a flange, and a moving space formed between the second end of the guide seat and the top of the receiving groove, the check valve plate being located within the moving space; and an elastic element, sleeved on the outer wall of the guide seat, with a first end of the elastic element abutting against the flange, and a second end of the elastic element abutting against the check valve plate, the elastic element providing a restoring force to hold the check valve plate in a first position.

[0008] Furthermore, it also includes: a guide seat, on which a second connecting part is provided that connects the first connecting part and the enthalpy-increasing channel.

[0009] Furthermore, the first connecting part consists of a plurality of first through holes distributed circumferentially along the check valve plate, the plurality of first through holes being offset from the flow channel, and the second connecting part consists of a plurality of second through holes distributed circumferentially along the guide seat, the second through holes being connected to the first through holes.

[0010] Furthermore, the end of the guide seat facing the check valve plate is provided with an annular groove, which connects the first connecting part and the second connecting part. The end of the guide seat away from the check valve plate is provided with a blind groove, which connects the second connecting part and the enthalpy-increasing channel.

[0011] Furthermore, a support portion is formed in the middle of the guide seat, and the end of the support portion near the check valve plate is flush with the second end face of the guide seat. The support portion is used to support the check valve plate.

[0012] Furthermore, the guide seat is interference-fitted to the receiving groove via a flange.

[0013] Furthermore, a limiting groove is provided at one end of the receiving groove near the stationary vortex disk, and the flange extends into the limiting groove and is interference-fitted with the limiting groove.

[0014] Furthermore, the stationary vortex disk is provided with a mounting groove communicating with the enthalpy-increasing channel, and at least a portion of the second connecting part of the connecting seat is installed in the mounting groove.

[0015] According to another aspect of the present invention, a scroll compressor is provided, including a scroll disk assembly, wherein the scroll disk assembly is the scroll disk assembly described above.

[0016] Applying the technical solution of this invention, the second connecting part of the connecting seat is provided with a receiving groove, which, together with the stationary scroll plate, forms a receiving cavity. The check valve assembly is disposed within the receiving cavity, eliminating the need to machine a boss on the stationary scroll plate, thus simplifying the structure of the stationary scroll plate and reducing its processing cost and complexity. Simultaneously, placing the check valve assembly within the receiving cavity helps to reduce the overall height of the scroll plate assembly, making its overall structure more compact. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 An exploded schematic diagram of an embodiment of the vortex disk assembly according to the present invention is shown;

[0019] Figure 2 A cross-sectional schematic diagram of the scroll disk assembly under non-enthalpy-increasing conditions is shown;

[0020] Figure 3 A cross-sectional schematic diagram of the scroll disk assembly under enthalpy-increasing conditions is shown;

[0021] Figure 4 A schematic diagram of the connector structure is shown;

[0022] Figure 5 A schematic diagram of the check valve plate is shown.

[0023] Figure 6 A schematic diagram of the guide seat structure is shown;

[0024] Figure 7 A cross-sectional schematic diagram of the guide seat is shown.

[0025] The above figures include the following reference numerals:

[0026] 10. Connecting seat; 11. First connecting part; 12. Second connecting part; 13. Flow channel; 14. Receiving groove; 15. Moving space; 16. Ear plate; 17. Bolt; 18. Receiving cavity;

[0027] 20. Check valve plate; 21. First connecting part;

[0028] 30. Elastic components;

[0029] 40. Guide seat; 41. Flange; 42. Support part; 43. Second connecting part; 44. Annular groove; 45. Blind through groove;

[0030] 50. Static vortex disk; 51. Enthalpy-increasing channel; 52. Mounting slot;

[0031] 60. Enthalpy-increasing tube; 61. First sealing ring; 62. Second sealing ring. Detailed Implementation

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0036] Combination Figures 1 to 7 As shown, according to a specific embodiment of this application, a scroll disk assembly is provided.

[0037] Specifically, the scroll plate assembly includes: a stationary scroll plate 50, a connecting seat 10, a moving scroll plate, and a check valve assembly. The connecting seat 10 has a first connecting portion 11 and a second connecting portion 12. The first connecting portion 11 is provided with a flow channel 13 for communicating with the enthalpy-increasing tube 60. The second connecting portion 12 is provided with a receiving groove 14. The second connecting portion 12 is connected to the stationary scroll plate 50. The receiving groove 14 and the stationary scroll plate 50 form a receiving cavity 18. The side wall of the receiving cavity 18 has an enthalpy-increasing channel 51 that communicates with the working cavity. The working cavity is a cavity formed between the stationary scroll plate 50 and the moving scroll plate for sucking and compressing the refrigerant. The check valve assembly is movably disposed within the receiving cavity 18. The check valve assembly has a first connecting portion 21. The check valve assembly has a first position that blocks the flow channel 13 and a second position that avoids the flow channel 13. When the check valve assembly is in the first position, the flow channel 13 is disconnected from the working cavity. When the check valve assembly is in the second position, the flow channel 13 is connected to the working cavity through the first connecting portion 21.

[0038] It should be noted that, as Figure 2 As shown, when the scroll compressor is operating normally, i.e., under non-enthalpy-increasing conditions, if the pressure in the working chamber is greater than the pressure in the flow channel 13, the pressure in the working chamber pushes the check valve assembly towards the flow channel 13, so that the check valve assembly blocks the flow channel 13. Figure 3 As shown, during the enthalpy-increasing operation, when the pressure inside the working chamber is less than the pressure inside the flow channel 13, the pressure inside the flow channel 13 pushes the check valve assembly away from the flow channel 13, allowing the check valve assembly to avoid the flow channel 13, so that the refrigerant in the enthalpy-increasing pipe 60 sequentially enters the working chamber through the flow channel 13, the receiving chamber 18, and the enthalpy-increasing channel 51. Figure 2 , Figure 3 The direction of the middle arrow indicates the direction of refrigerant flow. The check valve assembly reduces the pressure pulsation of the refrigerant in the enthalpy-increasing pipe 60 during normal operation of the scroll compressor, thereby reducing the vibration of the enthalpy-increasing pipe 60.

[0039] In the embodiments of this application, the second connecting portion 12 of the connecting seat 10 is provided with a receiving groove 14. The receiving groove 14 and the stationary scroll plate 50 surround a receiving cavity 18. The check valve assembly is disposed within the receiving cavity 18, eliminating the need to machine bosses on the stationary scroll plate 50, thus simplifying the structure of the stationary scroll plate 50 and reducing its machining cost and complexity. Simultaneously, placing the check valve assembly within the receiving cavity 18 helps to reduce the overall height of the scroll plate assembly, making the overall structure of the scroll plate assembly more compact.

[0040] like Figure 2 , Figure 3 As shown, the check valve assembly includes a check valve plate 20 and an elastic element 30. A first connecting portion 21 is located on the check valve plate 20, specifically, as shown... Figure 5As shown, the check valve plate 20 has a circular plate structure. The first connecting portion 21 consists of multiple first through holes distributed circumferentially along the check valve plate 20. These first through holes are offset from the flow channel 13, and the area of ​​the central region of the check valve plate 20 is larger than the cross-sectional area of ​​the flow channel 13, so that the check valve plate 20 in the first position completely blocks the flow channel 13. In this embodiment, the first through holes are set as arc-shaped holes to increase the flow area of ​​the refrigerant. In this embodiment, the elastic element 30 is a spring. The first end of the elastic element 30 abuts against the check valve plate 20, and the second end of the elastic element 30 abuts against the stationary scroll plate 50. The elastic element 30 provides a restoring force to keep the check valve plate 20 in the first position. Specifically, the elastic element 30 in the receiving cavity 18 is always in a compressed state to ensure that the elastic element 30 has sufficient restoring force.

[0041] like Figure 2 , Figure 3 As shown, a guide seat 40 is provided inside the receiving cavity 18. The guide seat 40 has a second connecting part 43 that connects the first connecting part 21 and the enthalpy-increasing channel 51. The first end of the guide seat 40 abuts against the stationary vortex disk 50, and the second end of the guide seat 40 forms a moving space 15 between itself and the top of the receiving groove 14. The check valve plate 20 is located within the moving space 15, and the elastic element 30 is sleeved on the outer wall of the guide seat 40. The guide seat 40 restricts the movement of the elastic element 30 along its extension and contraction direction. The guide seat 40 allows the elastic element 30 to move along its own extension and contraction direction, preventing the check valve plate 20 from failing to completely block the flow channel 13 due to the offset of the elastic element 30.

[0042] like Figure 6 , Figure 7 As shown, the second connecting portion 43 consists of a plurality of second through holes distributed circumferentially along the guide seat 40, and the second through holes are connected to the first through holes. In this embodiment, the second through holes are arc-shaped holes, and the number of second through holes is the same as the number of first through holes, so that the plurality of second through holes can be configured to correspond one-to-one with the plurality of first through holes.

[0043] like Figure 6 , Figure 7As shown, the guide seat 40 has an annular groove 44 at one end facing the check valve plate 20, which connects the first connecting part 21 and the second connecting part 43. The guide seat 40 also has a blind groove 45 at the other end away from the check valve plate 20, which connects the second connecting part 43 and the enthalpy-increasing channel 51. Specifically, the second connecting part 43 is located within the annular groove 44, which is positioned opposite to the first connecting part 21. The annular groove 44 allows the refrigerant to enter the annular groove 44 after passing through the first connecting part 21, and then be diverted from the annular groove 44 to the second connecting holes of the second connecting part 43, further increasing the refrigerant flow rate and flow area. During installation, it is not necessary to install each first connecting hole and each second connecting hole in a one-to-one correspondence, reducing installation difficulty. Meanwhile, the second connecting part 43 is also opened in the blind channel 45. The refrigerant flowing through the second connecting part 43 first flows into the blind channel 45, and then flows into the enthalpy-increasing channel 51 from the blind channel 45.

[0044] like Figure 6 , Figure 7 As shown, the guide seat 40 has a columnar structure, and the second connecting portion 43 is distributed circumferentially along the guide seat 40. A support portion 42 is formed in the middle of the guide seat 40. The end of the support portion 42 near the check valve plate 20 is flush with the second end face of the guide seat 40. The support portion 42 is used to support the check valve plate 20. The provision of the support portion 42 not only enhances the rigidity of the guide seat 40 itself, but also supports the middle of the check valve plate 20, preventing the check valve plate 20 from deforming due to large impact forces during the enthalpy increase process.

[0045] like Figure 2 , Figure 3 As shown, a flange 41 is provided on the outer wall of the guide seat 40, and the guide seat 40 is interference-fitted with the receiving groove 14 through the flange 41. The guide seat 40 is set in the receiving groove 14. The interference fit not only achieves a sealed connection between the guide seat 40 and the connecting seat 10, but also simplifies installation and provides better sealing performance than sealing with a sealing ring.

[0046] like Figure 2 , Figure 3 As shown, a limiting groove is provided at one end of the receiving groove 14 near the stationary vortex disk 50. The flange 41 extends into the limiting groove and is interference-fitted with it. The limiting groove provides axial limitation for the guide seat 40, preventing axial movement of the guide seat 40 due to axial impact.

[0047] like Figure 1As shown, the stationary vortex disk 50 is provided with a mounting groove 52 communicating with the enthalpy-increasing channel 51. At least a portion of the second connecting part 12 of the connecting seat 10 is installed in the mounting groove 52, wherein the second connecting part 12 is sealed to the mounting groove 52 by a first sealing ring 61. In order to make the connection between the second connecting part 12 and the stationary vortex disk 50 more stable, an ear plate 16 is provided at the outer edge of the second connecting part 12, and the ear plate 16 is connected to the stationary vortex disk 50 by bolts 17.

[0048] like Figure 1 As shown, the enthalpy-increasing tube 60 is connected inside the flow channel 13, and the enthalpy-increasing tube 60 is sealed to the flow channel 13 by the second sealing ring 62.

[0049] According to another embodiment of this application, a scroll compressor is provided, including a scroll disk assembly, wherein the scroll disk assembly is the scroll disk assembly in the above embodiment.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0052] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A scroll disk assembly, characterized in that, include: Static vortex disk (50); A connecting seat (10) has a first connecting part (11) and a second connecting part (12). The first connecting part (11) is provided with a flow channel (13) for communicating with the enthalpy-increasing tube (60). The second connecting part (12) is provided with a receiving groove (14). The second connecting part (12) is connected to the stationary vortex disk (50). The receiving groove (14) and the stationary vortex disk (50) form a receiving cavity (18). The side wall of the receiving cavity (18) is provided with an enthalpy-increasing channel (51) communicating with the working cavity. The working cavity is a cavity formed between the stationary vortex disk (50) and the moving vortex disk for sucking and compressing the refrigerant. A check valve assembly is movably disposed within the receiving cavity (18). The check valve assembly has a first connecting portion (21). The check valve assembly has a first position that blocks the flow channel (13) and a second position that avoids the flow channel (13). When the check valve assembly is in the first position, the flow channel (13) is disconnected from the working cavity. When the check valve assembly is in the second position, the flow channel (13) is connected to the working cavity through the first connecting portion (21). The check valve component includes: Check valve plate (20), the first connecting part (21) is located on the check valve plate (20); The guide seat (40) has a first end that abuts against the wall of the receiving groove (14) via a flange (41), and a moving space (15) is formed between the second end of the guide seat (40) and the top of the receiving groove (14). The check valve plate (20) is located in the moving space (15). The guide seat (40) is interference-fitted to the receiving groove (14) via the flange (41).

2. The scroll disk assembly according to claim 1, characterized in that, The check valve component includes: An elastic element (30) is sleeved on the outer wall of the guide seat (40). The first end of the elastic element (30) abuts against the flange (41), and the second end of the elastic element (30) abuts against the check valve plate (20). The elastic element (30) provides a restoring force to keep the check valve plate (20) in the first position.

3. The scroll disk assembly according to claim 2, characterized in that, The guide seat (40) is provided with a second connecting part (43) that connects the first connecting part (21) and the enthalpy increasing channel (51).

4. The scroll disk assembly according to claim 3, characterized in that, The first connecting part (21) is a plurality of first through holes distributed circumferentially along the check valve plate (20), and the plurality of first through holes are offset from the flow channel (13). The second connecting part (43) is a plurality of second through holes distributed circumferentially along the guide seat (40), and the second through holes are connected to the first through holes.

5. The scroll disk assembly according to claim 4, characterized in that, The guide seat (40) has an annular groove (44) at one end facing the check valve plate (20), the annular groove (44) connecting the first connecting part (21) and the second connecting part (43), and a blind groove (45) at one end away from the check valve plate (20), the blind groove (45) connecting the second connecting part (43) and the enthalpy-increasing channel (51).

6. The scroll disk assembly according to claim 3, characterized in that, A support portion (42) is formed in the middle of the guide seat (40). One end of the support portion (42) near the check valve plate (20) is flush with the second end face of the guide seat (40). The support portion (42) is used to support the check valve plate (20).

7. The scroll disk assembly according to claim 1, characterized in that, The receiving groove (14) is provided with a limiting groove at one end near the static vortex disk (50), and the flange (41) extends into the limiting groove and is interference-fitted with the limiting groove.

8. The scroll disk assembly according to claim 1, characterized in that, The static vortex disk (50) is provided with a mounting groove (52) communicating with the enthalpy-increasing channel (51), and at least a portion of the second connecting part (12) of the connecting seat (10) is installed in the mounting groove (52).

9. A scroll compressor, comprising a scroll disk assembly, characterized in that, The scroll disk assembly is the scroll disk assembly according to any one of claims 1-8.

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