Scroll compressor

Abstract

The present application provides a scroll compressor, comprising: a housing enclosing an internal space; and a scroll mechanism arranged in the internal space, the scroll mechanism comprising a fixed scroll comprising an end plate, a fixed scroll wrap extending from a first end face of the end plate, and a circumferential wall arranged around the end plate and an outer periphery of the fixed scroll wrap, wherein the fixed scroll comprises a sealing portion located at a radially outer surface of the circumferential wall, the sealing portion being in sealing contact with the housing, thereby separating the internal space into a high-pressure region and a low-pressure region located on two sides of the sealing portion respectively and isolated from each other, and the scroll compressor further comprises a jet-refrigerant-enthalpy-increasing joint device connected to the fixed scroll, thereby forming a jet channel adapted to deliver jet-refrigerant-enthalpy fluid from a jet-refrigerant-enthalpy fluid source to at least one compression cavity of the scroll mechanism. According to the scroll compressor of the present application, it is high in efficiency, simple in structure and low in cost.

Description

Technical Field

[0001] This invention relates to a scroll compressor, and more specifically, to a large-displacement scroll compressor including a jet enthalpy-increasing connector. Background Technology

[0002] Existing conventional compressor systems for cooling / heating (including air conditioners, refrigeration equipment, etc.) generally consist of a compressor, condenser, main throttling device, and evaporator connected in sequence to form a circulation loop. In low-temperature heating conditions, to increase heating capacity, existing technologies employ vapor injection enthalpy enhancement designs. Vapor injection enthalpy enhancement systems typically include an economizer with a throttling device connected to the compressor's injection port to supply vapor injection enthalpy-enhancing fluid to at least one compression chamber of the compressor, thereby increasing the compressor's discharge capacity and thus improving heating capacity at low temperatures. Similarly, the cooling capacity of a compressor system can also be increased by supplementing with vapor injection enthalpy-enhancing fluid (injection gas).

[0003] However, large-displacement scroll compressors do not currently employ vapor injection enthalpy enhancement design. In particular, because large-displacement scroll compressors use a completely different method than ordinary compressors to separate the high-pressure zone and the low-pressure zone, this places higher demands on the design of vapor injection enthalpy enhancement pipelines and the connector devices of the fixed scroll.

[0004] Therefore, there is a need to design a jet enthalpy-enhancing connector for large-displacement scroll compressors, so as to improve compressor performance by utilizing the jet enthalpy-enhancing system while saving space occupied by the connector, simplifying the connector structure, and reducing the production and processing costs of the connector and the fixed scroll. Summary of the Invention

[0005] The purpose of this invention is to provide a scroll compressor including a jet enthalpy enhancement connector, which not only has a large displacement, but also has a jet enthalpy enhancement connector that can be connected to a jet enthalpy enhancement system to improve the overall performance of the compressor.

[0006] Another objective of this invention is to provide a scroll compressor including a jet enthalpy-increasing connector, wherein the jet enthalpy-increasing connector is applicable to situations where the machining allowance of the fixed scroll is small or the injection path is complex, and has a simple structure and low cost.

[0007] According to one aspect of the present invention, a scroll compressor is provided, comprising: a housing enclosing an internal space; and a scroll mechanism disposed within the internal space, the scroll mechanism including a fixed scroll, the fixed scroll including an end plate, a fixed scroll volute extending from a first end face of the end plate, and a circumferential wall disposed around the outer periphery of the end plate and the fixed scroll volute, wherein the fixed scroll includes a sealing portion located at the radially outer surface of the circumferential wall, the sealing portion sealingly contacting the housing, thereby dividing the internal space into a high-pressure zone and a low-pressure zone located on both sides of the sealing portion and isolated from each other, the scroll compressor further including a jet enthalpy-enhancing connector connected to the fixed scroll, thereby forming a jet channel suitable for conveying jet enthalpy-enhancing fluid from a jet enthalpy-enhancing fluid source to at least one compression chamber of the scroll mechanism.

[0008] Optionally, the fixed vortex includes a receiving portion for accommodating the jet enthalpy-enhancing connector device. The receiving portion is disposed on a second end face opposite to the first end face of the end plate and / or the radial outer surface of the circumferential wall. The receiving portion includes a first contact surface for abutting against the jet enthalpy-enhancing connector device.

[0009] Optionally, the injection channel includes a first channel segment, a second channel segment, and a third channel segment connected in sequence. The third channel segment is formed within the end plate and includes at least an axial section extending substantially along the axial direction of the scroll compressor to communicate with at least one compression chamber. The first channel segment is formed within the jet enthalpy-enhancing connector and extends substantially in a direction perpendicular to the axial direction of the scroll compressor and is connected to the jet enthalpy-enhancing fluid source. The second channel segment is formed in the fixed scroll and / or jet enthalpy-enhancing connector.

[0010] Optionally, a connecting channel is formed in the end plate, extending in a direction generally perpendicular to the axial direction of the scroll compressor to form a second channel segment. The connecting channel extends to the first abutment surface and forms a first opening at the first abutment surface. The jet enthalpy-enhancing connector device includes an outer part and an inner part. The first channel segment is disposed in the outer part and the inner part. One end of the inner part is connected to the outer part, and the other end of the inner part includes a second abutment surface that abuts against the first abutment surface, thereby connecting the first channel segment to the first opening.

[0011] Optionally, the jet enthalpy-enhancing connector includes an outer portion and an inner portion. A first channel segment is disposed in the outer portion. The inner portion is constructed as a tubular member extending generally perpendicular to the axial direction of the scroll compressor to define a second channel segment. A third channel segment extends to a first abutment surface and forms a first opening at the first abutment surface. One end of the inner portion is connected to the outer portion, and the other end of the inner portion includes a second abutment surface that abuts against the first abutment surface, thereby connecting the second channel segment to the first opening.

[0012] Optionally, the jet enthalpy-enhancing connector includes an outer portion and an inner portion. A first channel section is disposed in the outer portion. The inner portion is constructed as a cap-shaped member extending in a direction generally perpendicular to the axial direction of the scroll compressor. The inner portion has a second abutting surface that abuts against a first abutting surface. A channel is formed at the first abutting surface and / or the second abutting surface, thereby defining a second channel section between the inner portion and the fixed scroll. A third channel section extends to the first abutting surface and forms a first opening at the first abutting surface. The first opening is located in the channel.

[0013] Optionally, the external portion includes a horizontal channel and a vertical channel constituting the first channel segment, with one end of the vertical channel connected to the horizontal channel and the other end of the vertical channel connected to the channel.

[0014] Optionally, the jet enthalpy-enhancing connector device also includes a sealing gasket disposed between the first abutment surface and the second abutment surface to form a seal between them.

[0015] Optionally, the second channel segment includes a first branch and a second branch extending in different directions, through which the jet enthalpy-enhancing fluid enters the third channel segment.

[0016] Optionally, the first contact surface is configured to extend generally along the axial direction of the scroll compressor or generally in a direction perpendicular to the axial direction of the scroll compressor.

[0017] Optionally, the receiving portion is configured as a recess provided on the second end face of the end plate and / or the radial outer surface of the circumferential wall.

[0018] Optionally, the housing may be located in a low-pressure area or a high-pressure area.

[0019] Optionally, the first opening may be constructed as one or more.

[0020] Optionally, the sealing part is constructed as a flange protruding from the radially outer surface of the circumferential wall, the flange being interference-fitted with the housing; or the sealing part is constructed as including a groove recessed from the radially outer surface of the circumferential wall and a sealing element accommodated in the groove, the sealing element abutting against the housing.

[0021] Optionally, the scroll compressor is a large-displacement scroll compressor.

[0022] According to the scroll compressor of the present invention, a sealed contact is formed between the outer peripheral wall of the fixed scroll and the housing to divide the internal space of the housing into a high-pressure zone and a low-pressure zone. Furthermore, the fixed scroll is connected to a jet enthalpy-enhancing connector device, thereby utilizing jet enthalpy-enhancing technology to further improve the performance of the compressor system. The jet enthalpy-enhancing connector device has a simple structure, is easy to process and assemble, and is inexpensive. Moreover, it can be widely applied to various large-displacement scroll compressors, especially suitable for situations where the machining allowance of the fixed scroll is small or the injection path is complex, thereby effectively controlling the production cost of the compressor while improving its performance. Attached Figure Description

[0023] The features and advantages of one or more embodiments of the present invention will become more readily apparent from the following description with reference to the accompanying drawings. The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. The drawings are not drawn to scale and some features may be enlarged or reduced to show details of specific parts. In the drawings:

[0024] Figure 1 This is a longitudinal sectional view of a scroll compressor according to a first embodiment of the present invention;

[0025] Figure 2a and Figure 2b They are Figure 1 Enlarged views of details A and A' in the image (Example A and Example A');

[0026] Figure 3 This is a three-dimensional schematic diagram of the fixed scroll of a scroll compressor according to the first embodiment of the present invention;

[0027] Figure 4a This is an exploded perspective view of the constant scroll and jet enthalpy-increasing connector device of the scroll compressor according to the first embodiment of the present invention;

[0028] Figure 4b This is a three-dimensional schematic diagram of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the first embodiment of the present invention.

[0029] Figure 5 This is a longitudinal sectional view of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the first embodiment of the present invention.

[0030] Figure 6 This is a cross-sectional view of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the first embodiment of the present invention.

[0031] Figure 7 This is a longitudinal sectional view of a scroll compressor according to a second embodiment of the present invention;

[0032] Figure 8a This is an exploded perspective view of the constant scroll and jet enthalpy-increasing connector device of the scroll compressor according to the third embodiment of the present invention;

[0033] Figure 8b This is a three-dimensional schematic diagram of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of a scroll compressor according to a third embodiment of the present invention.

[0034] Figure 9 This is a perspective view of the main body of the jet enthalpy-enhancing connector device according to a third embodiment of the present invention;

[0035] Figure 10a This is a top view of the fixed scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the third embodiment of the present invention, wherein the main body and fasteners of the jet enthalpy-increasing connector device are removed.

[0036] Figure 10b yes Figure 10a A magnified view of detail B in the image;

[0037] Figure 11a This is a longitudinal sectional view of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the third embodiment of the present invention.

[0038] Figure 11b This is a cross-sectional view of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the third embodiment of the present invention;

[0039] Figure 12 This is an exploded perspective view of the constant scroll and jet enthalpy-increasing connector device of the scroll compressor according to the fourth embodiment of the present invention;

[0040] Figure 13 This is a perspective view of a scroll compressor with a fixed scroll and a jet enthalpy-increasing connector (when the two are connected) according to a fourth embodiment of the present invention, wherein the main body and fasteners of the jet enthalpy-increasing connector are removed.

[0041] Figure 14 This is a perspective view of the main body of the jet enthalpy-enhancing connector device according to the fourth embodiment of the present invention;

[0042] Figure 15 This is a longitudinal sectional view of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of the scroll compressor according to the fourth embodiment of the present invention.

[0043] Figure 16a This is an exploded perspective view of the constant scroll and jet enthalpy-increasing junction device of a scroll compressor according to a fifth embodiment of the present invention; and

[0044] Figure 16b This is a perspective view of the constant scroll and jet enthalpy-increasing connector device (when the two are connected) of a scroll compressor according to the fifth embodiment of the present invention. Detailed Implementation

[0045] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. This description is merely exemplary and does not constitute a limitation on the present invention and its applications.

[0046] Figure 1 This is a partial longitudinal sectional view of a scroll compressor according to a first exemplary embodiment of the present invention. Figure 1 As shown, the scroll compressor 100a mainly includes a housing 10, a scroll mechanism, a main bearing housing 40, a drive shaft 50, and a motor 60. The housing 10 typically includes a generally cylindrical housing body 14, a top cover 12, and a bottom cover 16. The housing body 14, top cover 12, and bottom cover 16 are formed into a complete housing 10 by means of welding, for example, thereby enclosing an internal space for accommodating a series of compressor components, including the scroll mechanism. The internal space is divided into a high-pressure zone CH and a low-pressure zone CL. Within this internal space, the scroll mechanism is supported by the main bearing housing 40, which is fixedly connected to the housing 10 by means of riveting or is integrally formed with the housing 10. The scroll mechanism includes a fixed scroll 20a and a moving scroll 30. Driven by the motor 60 and the drive shaft 50, the moving scroll can rotate relative to the fixed scroll 30. In other words, the axis of the moving vortex 30 revolves relative to the axis of the fixed vortex 20a, but neither the moving vortex 30 nor the fixed vortex 20a rotates around their respective axes.

[0047] The moving scroll 30 includes an end plate 32 and a helical scroll 34 extending upward from one side of the end plate 32. The stationary scroll 20a includes an end plate 22, a helical scroll 24 extending downward from a first end face of one side of the end plate 22, and a circumferential wall 23 surrounding the outer periphery of the end plate 22 and the scroll 24. Particularly, especially for large-displacement scroll compressors, such as... Figure 3 As shown, the fixed scroll 20a also includes a plurality of axially extending holes 234 disposed in its circumferential wall 23, through which fasteners can pass to fix the fixed scroll 20a to the main bearing housing 40. The scroll 24 of the fixed scroll 20a meshes with the scroll 34 of the moving scroll 30, thereby forming a series of compression chambers between them for compressing fluids such as refrigerants. The working fluid enters the low-pressure zone CL in the interior space of the housing 10 through an intake fitting disposed on the housing 10 (typically the housing body 14), is compressed through the series of compression chambers of the scroll mechanism, and then exits through the central exhaust port 28 in the center of the fixed scroll 20a. Figure 6 It enters the high-pressure zone CH and is then discharged to the outside of the scroll compressor 100a through the exhaust port fitting provided on the housing 10 (usually the top cover 12).

[0048] To divide the internal space of the housing into low-pressure and high-pressure zones, some existing technologies typically use a partition between the top cover and the housing body. However, for certain compressor types, such as large-displacement scroll compressors, other simpler and more reliable partitioning methods are required. Figure 2a and Figure 2b Two exemplary methods for dividing the internal space of a housing into a low-pressure zone and a high-pressure zone are shown, respectively. In these methods, a gap exists between the radially outer surface of the circumferential wall 23 of the fixed scroll 20a and the inner wall of the housing 10. The fixed scroll 20a also includes a sealing portion 26 located at the radially outer surface 231 of the circumferential wall 23. This sealing portion 26 divides the internal space of the housing into a high-pressure zone CH and a low-pressure zone CL, located on opposite sides of the sealing portion 26 and isolated from each other. Figure 2a As shown, the sealing part 26 is configured to extend from the radial outer surface 231 of the circumferential wall 23 toward the housing 10 (in Figure 2a The image shows a flange 232 protruding from the inner wall of the top cover 12). This flange 232 is approximately annular, extending circumferentially along the circumferential wall 23, and is interference-fitted with the inner wall of the housing, thereby achieving a sealed isolation of the space above and below the flange 232. For example... Figure 2b As shown, the sealing portion 26 can also be configured to include a radially outer surface 231' extending from the circumferential wall 23 toward the housing 10 (in Figure 2b The top cover 12) is shown with a recess 232' recessed in the opposite direction to the inner wall and a seal 233' housed in the recess 232'. The recess 232' is constructed as a generally annular through groove extending circumferentially along the circumferential wall 23. Correspondingly, the seal 233' is also generally annular. The seal 233' abuts against the inner wall of the housing, thereby achieving a sealing and isolation of the space on the upper and lower sides of the seal 233'. Figure 2a and Figure 2b The two exemplary separation methods shown not only omit the partition, making the compressor structure simple, easy to manufacture and install, but also make the separation of the high-pressure zone and the low-pressure zone more reliable, and are particularly suitable for large-displacement scroll compressors.

[0049] To further improve the performance of compressors, especially large-displacement scroll compressors, the scroll compressor 100a according to the first embodiment of the present invention also features a jet enthalpy enhancement design. Specifically, as... Figure 1 As shown, the scroll compressor 100a includes a jet enthalpy enhancement connector 70a, which is connected to the fixed scroll 20a and can pass through the housing 10 or engage with a jet enthalpy enhancement inlet fitting on the housing 10, thereby connecting the scroll compressor 100a to a jet enthalpy enhancement system outside the scroll compressor 100a.

[0050] The following reference Figure 4a , Figure 4b , Figure 5 and Figure 6 The specific connection structure between the scroll compressor 100a and the jet enthalpy enhancement system according to the first embodiment of the present invention will be described in detail. Figure 4a and Figure 4b As shown, the fixed vortex 20a includes a receiving portion 221a for accommodating the jet enthalpy-enhancing connector device 70a. The receiving portion 221a is disposed at the second end face of the end plate 22 and the radially outer surface of the circumferential wall 23 of the fixed vortex 20a, and is configured as a generally rectangular recess on the second end face and the radially outer surface of the circumferential wall, wherein the second end face is the end face of the end plate 22 opposite to the first end face where the vortex 24 is located. In other words, the generally rectangular recess is defined to extend inward (i.e., in the direction opposite to the housing) from the radially outer wall of the circumferential wall 23 and extend a certain distance on the end plate 22. This distance does not exceed the radius of the fixed vortex 20a, thereby avoiding the influence of the installation of the jet enthalpy-enhancing connector device on the exhaust structure (e.g., the central exhaust port 28) and / or pressure relief structure at the center of the fixed vortex 20a. A first abutment surface 222a, extending substantially along the axial direction of the scroll compressor, is formed at the extended end of the receiving portion 221a (or a generally rectangular recess). This first abutment surface 222a is used to abut against the jet enthalpy-enhancing connector device 70a. The depth of the downward recess of the receiving portion 221a should be adapted to the thickness of the jet enthalpy-enhancing connector device 70a, but at least the bottom of the receiving portion 221a must remain above the sealing portion 26. That is, the receiving portion 221a is located within the high-pressure zone CH. The end plate 22 of the fixed scroll 20a also has connecting channels 2231a and 2232a extending in a direction generally perpendicular to the axial direction of the scroll compressor 100a, and two different vertical channels extending in a direction generally perpendicular to the axial direction of the scroll compressor 100a to connect to the compression chamber (e.g., the intermediate pressure chamber). The connecting channels 2231a and 2232a extend in different directions, and one end of both extends to the first abutting surface 222a and forms a first opening 223a at the first abutting surface 222a, while the other end is provided with an opening 2233a for connecting to the corresponding vertical channel respectively.

[0051] The jet enthalpy-enhancing connector 70a includes a connector body 72a, a sealing gasket 71a, and a fastener 73a, such as a screw. The connector body 72a is generally linear in shape and is formed by connecting or integrally creating an outer portion 726a and an inner portion 724a. A channel 722a extending generally along the axis of the connector body 72a is formed inside the connector body 72a. The outer portion 726a can be connected to a jet enthalpy-enhancing fluid source. One end of the inner portion 724a is connected to the outer portion 726a, and the other end includes a wing-shaped portion for fixed connection with a fixed vortex 20a. This wing-shaped portion is constructed to extend from the axis of the connector body 72a toward both sides of the axis in a plane perpendicular to the axis of the connector body 72a, and a through hole 721a for the fastener 73a is formed near the outer edge of the wing-shaped portion. The end face of the wing-shaped portion opposite to the outer portion 726a forms a second abutment surface 723a for abutting against the first abutment surface 222a. An outlet of a channel 722a is formed at the second abutment surface 723a. A sealing gasket 71a is disposed between the second abutment surface 723a and the first abutment surface 222a to form a seal between them. Corresponding to the through hole 721a of the connector body portion 72a, a fastening hole 224a for receiving a fastener 73a is provided at the first abutment surface 222a, and a through hole 712a for the fastener 73a to pass through is provided on the sealing gasket 71a. Corresponding to the outlet of the channel 722a at the second contact surface 723a of the connector body 72a, a first opening 223a is provided at the first contact surface 222a, which is aligned with and communicates with the outlet of the channel 722a. An opening 711a is provided on the sealing gasket 71a, which is aligned with and communicates with both the outlet of the channel 722a and the first opening 223a. When installing and fixing the jet enthalpy-enhancing connector 70a to the fixed vortex 20a, the jet enthalpy-enhancing connector 70a is first placed in the receiving portion 221a. Then, the fastener 73a passes sequentially through the through hole 721a of the connector body 72a, the through hole 712a of the sealing gasket 71a, and finally inserts into the fastening hole 224a of the fixed vortex 20a, thereby fixing the jet enthalpy-enhancing connector 70a in place on the fixed vortex 20a.

[0052] After the jet enthalpy-enhancing connector 70a is installed on the stationary vortex 20a, the outlet of the orifice 722a within the jet enthalpy-enhancing connector 70a aligns and connects with the opening 711a of the sealing gasket 71a and the first opening 223a at the first contact surface 222a of the stationary vortex 20a, thereby forming a jet channel within the jet enthalpy-enhancing connector 70a and the stationary vortex 20a suitable for conveying jet enthalpy-enhancing fluid from the jet enthalpy-enhancing fluid source to at least one compression chamber of the vortex mechanism. See also Figure 5 and Figure 6The injection channel includes a first channel segment, a second channel segment, and a third channel segment connected sequentially from the outside to the inside of the fixed scroll compressor 20a. The first channel segment is formed within the jet enthalpy-enhancing connector device 70a (i.e., the inner connection 724a and the outer connection 726a) and extends generally in a direction perpendicular to the axial direction of the scroll compressor 100a, that is, it is mainly composed of the channel 722a within the connector body 72a. The second channel segment is formed within the fixed scroll compressor 20a, that is, it is composed of the connecting channels 2231a and 2232a within the end plate 22 of the fixed scroll compressor 20a; that is, the second channel segment has two branches extending in different directions. The third channel segment is formed within the end plate 22 and includes at least an axial section extending in the axial direction of the scroll compressor 100a, that is, it is composed of a vertical channel communicating with at least one compression chamber of the compressor. The number of vertical channels corresponds to the number of connecting channels. In other words, the connecting channels 2231a and 2232a are connected to the channel 722a of the vapor injection enthalpy-enhancing connector device 70a through the first opening 223a and to the vapor injection enthalpy-enhancing fluid source. Furthermore, they are connected to the corresponding vertical channels through the openings 2233a in the connecting channels 2231a and 2232a, thereby connecting to the compression chamber of the compressor. Thus, the fluid from the vapor injection enthalpy-enhancing fluid source can flow sequentially through the channel 722a, the outlet of the channel 722a at the second contact surface 723a, the opening 711a of the sealing gasket 71a, and the first opening 223a, and then enter at least one compression chamber of the compressor through the connecting channels 2231a and 2232a, the openings 2233a in the connecting channels 2231a and 2232a, and the vertical channels in the end plate 22.

[0053] In addition, such as Figure 6 As shown, in this example, two connecting channels 2231a and 2232a serve as two branches extending in different directions from the second channel segment. These are arranged approximately symmetrically to deliver the jet enthalpy-enhancing fluid to two approximately symmetrical compression chambers, thus facilitating compressor balance. However, those skilled in the art will understand that one or more connecting channels may also be provided.

[0054] The scroll compressor according to the first embodiment of the present invention not only realizes the jet enthalpy enhancement design to effectively improve the overall performance of the compressor system, but also the jet enthalpy enhancement connector device 70a has a simple structure and is easy to install, which helps to reduce the processing cost of the connection structure between the fixed scroll and the jet enthalpy enhancement connector device, and is particularly suitable for situations where the upper end face (second end face) of the fixed scroll has sufficient processing allowance.

[0055] Figure 7A scroll compressor 100b according to a second embodiment of the present invention is shown. In the second embodiment, the scroll compressor 100b is basically the same as the scroll compressor 100a of the first embodiment in terms of main structure and function. This includes the main structure of the jet enthalpy-increasing connector device 70b in the scroll compressor 100b, the main structure of the connecting channel and vertical passage in the stationary scroll 20b, and the connection method between the jet enthalpy-increasing connector device 70b and the stationary scroll 20b, all of which are similar to those in the first embodiment and will not be described again. The difference is that the jet enthalpy-increasing connector device 70b is located in the low-pressure zone CL rather than in the high-pressure zone CH. This arrangement is particularly suitable for situations where the machining allowance of the upper end face (second end face) of the stationary scroll is insufficient. Specifically, the fixed scroll compressor 20b includes a receiving portion 221b for accommodating the jet enthalpy-enhancing connector device 70b. The receiving portion 221b is formed by a generally rectangular recess on the radially outer side of the circumferential wall 23 of the fixed scroll compressor 20b, and the bottom surface of this recess (extending along the axial direction of the scroll compressor) forms a first abutment surface 222b. This generally rectangular recess is defined to extend downwards from below the sealing portion 26 by a certain distance, the extension length of which is adapted to the thickness of the jet enthalpy-enhancing connector device 70b. However, the receiving portion 221b may also extend downwards from below the sealing portion 26 to the bottommost end of the circumferential wall 23, such as... Figure 7 As shown, this makes processing more convenient.

[0056] In the second embodiment, similar to the first exemplary embodiment, not only is the jet enthalpy enhancement design realized to effectively improve the overall performance of the compressor system, but the jet enthalpy enhancement connector device 70b also has a simple structure, is easy to install, and helps reduce production costs. More importantly, even when the machining allowance on the upper end face (second end face) of the fixed scroll is insufficient, the connection between the jet enthalpy enhancement system and the fixed scroll can still be achieved easily and at a low cost.

[0057] Figure 8a and Figure 8b The illustration shows the fixed scroll compressor 20c and the jet enthalpy-enhancing connector device 70c according to a third embodiment of the present invention. In this third embodiment, the scroll compressor's main structure and function are essentially the same as those of the scroll compressor 100a in the first embodiment, and therefore will not be described again. The difference lies in the different construction and connection methods of the jet enthalpy-enhancing connector device 70c and the fixed scroll compressor 20c according to the third embodiment, compared to the jet enthalpy-enhancing connector device 70a and the fixed scroll compressor 20a in the first embodiment.

[0058] like Figure 8a and Figure 8bAs shown, the fixed scroll compressor 20c includes a receiving portion 221c for accommodating the jet enthalpy-enhancing connector device 70c, which is disposed at the second end face of the end plate 22 of the fixed scroll compressor 20c. The receiving portion 221c is generally arc-shaped, and its arc extension path is defined as extending from a point on the second end face corresponding to the position of one compression chamber to a point corresponding to another compression chamber. The receiving portion 221c can be configured as a recessed portion recessed from the second end face, or it can be non-recessed. The receiving portion 221c includes a first abutment surface 222c extending in a direction generally perpendicular to the axial direction of the scroll compressor, which abuts against the jet enthalpy-enhancing connector device 70c. The receiving portion 221c is disposed within the high-pressure zone CH. Two different vertical channels extending in a direction generally perpendicular to the axial direction of the scroll compressor and thus communicating with the compression chambers are also formed within the end plate 22 of the fixed scroll compressor 20c. One end of the vertical channel is connected to a compression chamber of the compressor, and the other end extends to the first abutment surface 222c and forms a first opening 2233c at the first abutment surface 222c.

[0059] The jet enthalpy-enhancing connector 70c includes a connector body 72c, a sealing gasket 71c, and a fastener 73c, such as a screw. The connector body 72c is formed by connecting or integrally creating an outer portion 726c and an inner portion. The outer portion 726c is generally straight and has a communicating horizontal channel 7223c and a vertical channel 7225c inside. Figure 9 One end of the horizontal channel 7223c can be connected to a jet enthalpy-increasing fluid source outside the compressor, and the other end is connected to the vertical channel 7225c. The inner connection is constructed as a generally arc-shaped cover member extending in a direction generally perpendicular to the axial direction of the scroll compressor. The arc-shaped extension path of this cover member coincides with the arc-shaped extension path of the receiving portion 221c. The inner connection is connected to the outer connection 726c at approximately the midpoint of its arc-shaped extension path. Alternatively, the inner connection is constructed to include a first inner connection segment 724c and a second inner connection segment 725c extending arc-shapedly from one end of the outer connection 726c toward the left and right sides of the axis of the outer connection 726c, respectively. One end of the first inner connection segment 724c and the second inner connection segment 725c are connected to the outer connection 726c, and the other ends have enlarged ends 7241c and 7251c, respectively. See also Figure 9The bottom surface of the inner portion (i.e., the surface facing the first abutment surface 222c) forms a second abutment surface 723c for abutting against the first abutment surface 222c. A first channel 7221c and a second channel 7222c, extending along the arc path of the cover-shaped member, are formed at the second abutment surface 723c. One end of the first channel 7221c and the second channel 7222c are interconnected, and an opening 7224c is provided in the channel at the connection position to serve as the outlet of the vertical channel 7225c of the outer part 726c. The other ends of the first channel 7221c and the second channel 7222c are respectively located in the enlarged ends 7241c and 7251c of the first inner part segment 724c and the second inner part segment 725c, and are preferably constructed as first channel ends 7228c and second channel ends 7226c that are slightly expanded in size compared to other parts of the first channel 7221c and the second channel 7222c, thereby facilitating the positioning and fixed installation of the cover member. The inner part also includes a plurality of through holes 721c arranged along the arc path of the cover member and spaced apart from the channels 7221c and 7222c. A sealing gasket 71c is disposed between the second abutment surface 723c and the first abutment surface 222c to form a seal between the two. Corresponding to the through hole 721c of the inner connection, a fastening hole 224c for accommodating a fastener 73c is provided at the first abutment surface 222c, and a through hole 712c for the fastener 73c to pass through is provided on the sealing gasket 71c. Corresponding to the first channel end 7228c and the second channel end 7226c at the second abutment surface 723c of the inner connection, a first opening 2233c is provided at the first abutment surface 222c that is aligned with and communicates with the first channel end 7228c and the second channel end 7226c, and an opening 711c is provided at the sealing gasket 71c that is aligned with and communicates with the first channel end 7228c, the second channel end 7226c, and the first opening 2233c, respectively. When installing and fixing the jet enthalpy enhancement connector 70c to the fixed vortex 20c, the jet enthalpy enhancement connector 70c is first placed in the receiving part 221c. Then, the fastener 73c passes through the through hole 721c of the inner part, the through hole 712c of the sealing gasket 71c, and finally is inserted into the fastening hole 224c of the fixed vortex 20c, so that the jet enthalpy enhancement connector 70c is fixedly installed on the fixed vortex 20c.

[0060] After the jet enthalpy-enhancing connector 70c is installed on the stationary vortex 20c, the first channel 7221c and the second channel 7222c are aligned and connected at their first channel ends 7228c and second channel ends 7226c with the opening 711c of the sealing gasket 71c and the first opening 2233c at the first abutment surface 222c of the stationary vortex 20c, thereby forming a jet channel within the jet enthalpy-enhancing connector 70c and the stationary vortex 20c, suitable for conveying jet enthalpy-enhancing fluid from the jet enthalpy-enhancing fluid source to at least one compression chamber of the vortex mechanism. See also Figure 11a and Figure 11b The injection channel includes a first channel section, a second channel section, and a third channel section connected sequentially from the outside to the inside of the fixed scroll compressor 20a. The first channel section is located in the outer portion 726c of the jet enthalpy-enhancing connector device 70c, and is composed of a horizontal channel 7223c and a vertical channel 7225c within the outer portion 726c. One end of the vertical channel 7225c is connected to the horizontal channel 7223c, and the other end is connected to the channels 7221c and 7222c through an opening 7224c located within the channels 7221c and 7222c. The second channel section is defined by the channels 7221c and 7222c between the inner portion and the fixed scroll compressor 20c. The third channel section is formed approximately along the axial direction of the scroll compressor within the end plate 22, and is composed of vertical channels communicating with at least one compression chamber of the compressor. The number of vertical channels corresponds to the number of channels (the ends of the channels). Since the first opening 2233c is arranged in channels 7221c and 7222c, the vertical channel can communicate with channels 7221c and 7222c. On the other hand, since the outlet (opening 7224c) of the vertical channel 7225c is arranged in channels 7221c and 7222c, channels 7221c and 7222c can communicate with the vertical channel 7225c and the horizontal channel 7223c in the external part 726c and connect to the vapor injection enthalpy-enhancing fluid source. Thus, the fluid from the vapor injection enthalpy-enhancing fluid source can flow sequentially through the horizontal channel 7223a, the vertical channel 7225c, and the opening 7224c, and then flow in different directions through channels 7221c and 7222c respectively, and enter at least one compression chamber of the compressor through the opening 711c of the sealing gasket 71c, the first opening 2233c, and the vertical channel in the end plate 22.

[0061] In addition, such as Figure 9As shown, in this example, two channels (first channel 7221c and second channel 7222c) serve as two branches extending in different directions from the second channel segment. They are arranged approximately symmetrically to deliver the jet enthalpy-enhancing fluid to two approximately symmetrical compression chambers, facilitating compressor balance. However, those skilled in the art will understand that one or more channels can be used. Furthermore, the channels, along with the corresponding cover members and receiving portions, are not limited to arcuate shapes but can be constructed as straight lines or curves (e.g., U-shapes). Additionally, as... Figure 10a and Figure 10b As shown, in this example, two first openings 2233c are shown at the end of each channel, but those skilled in the art will understand that the first openings 2233c can also be constructed as one or more.

[0062] The scroll compressor according to the third embodiment of the present invention not only achieves a jet enthalpy enhancement design to effectively improve the overall performance of the compressor system, but is also particularly suitable for situations where the machining allowance of the upper end face (second end face) of the fixed scroll is insufficient. By utilizing the cap-like configuration of the jet enthalpy enhancement connector 70c and the formed groove in the jet enthalpy enhancement connector as part of the injection channel, the manufacturing and machining of the fixed scroll is simplified, and the jet enthalpy enhancement connector 70c is also easier to position and install on the fixed scroll, which helps to reduce production costs.

[0063] Figure 12 The fourth embodiment of the present invention illustrates a fixed scroll compressor 20d and a jet enthalpy-enhancing connector device 70d. In this fourth embodiment, the scroll compressor's main structure and function are essentially the same as those of the scroll compressor in the third embodiment. The general construction and connection method of the jet enthalpy-enhancing connector device 70d and the fixed scroll compressor 20d are also similar to those of the jet enthalpy-enhancing connector device 70c and the fixed scroll compressor 20c in the third embodiment, and therefore will not be described in detail. The difference lies in that the channel for forming the second channel section of the injection channel is located at the first contact surface 222d of the fixed scroll compressor 20d, rather than at the second contact surface 723d of the jet enthalpy-enhancing connector device 70d.

[0064] Specifically, see Figure 12 and Figure 13The stationary vortex 20d includes a receiving portion 221d for accommodating the jet enthalpy-enhancing connector device 70d, the receiving portion 221d being disposed at the second end face of the end plate 22 of the stationary vortex 20d. The receiving portion 221d is generally arc-shaped, its arc extending from a point on the second end face corresponding to the location of one compression chamber to a point corresponding to another compression chamber. The receiving portion 221d can be configured as a recessed portion recessed from the second end face, or it can be non-recessed. The receiving portion 221d includes a first abutment surface 222d extending generally perpendicular to the axial direction of the scroll compressor, the first abutment surface 222d being used to abut against the jet enthalpy booster connector 70d. A channel 223d extending along an arcuate path is also formed at the first abutment surface 222d. The two ends of the channel 223d are respectively configured as a first channel end 2231d and a second channel end 2232d, slightly expanded relative to the rest of the channel 223d, thereby facilitating the positioning and fixed installation of the jet enthalpy booster connector 70d. The surface 222d also includes a plurality of fastening holes 224d arranged along the extension direction of the channel 223d and spaced apart from the channel 223d. The end plate 22 of the fixed scroll 20d also forms two different vertical channels extending generally along the axial direction of the scroll compressor to connect the compression chambers. One end of each vertical channel connects to a compression chamber of the compressor, and the other end extends to the first abutment surface 222d, forming a first opening 2233d at the first abutment surface 222d. The first opening 2233d is located within the end of the first channel 2231d and the end of the second channel 2232d, respectively.

[0065] The jet enthalpy-enhancing connector 70d includes a connector body 72d, a sealing gasket 71d, and a fastener 73d. The connector body 72d is formed by connecting or integrally creating an outer portion 726d and an inner portion. The outer portion 726d is generally straight, and its interior has a communicating horizontal channel 7223d and a vertical channel 7225d. Figure 14 , Figure 15 One end of the horizontal channel 7223d can be connected to a jet enthalpy-increasing fluid source outside the compressor, and the other end is connected to the vertical channel 7225d. The inner connection is constructed as a generally arc-shaped cap-like member extending generally perpendicular to the axial direction of the scroll compressor. The inner connection is constructed to include a first inner connection segment 724d and a second inner connection segment 725d extending arc-shapedly to the left and right sides of the axis of the outer connection 726d from one end of the outer connection 726d. One end of the first inner connection segment 724d and the second inner connection segment 725d are connected to the outer connection 726d, and the other end has enlarged ends 7241d and 7251d corresponding to the ends 2231d and 2232d of the first channel, respectively. See also Figure 14The bottom surface of the inner portion 724d (i.e., the surface facing the first abutment surface 222d) forms a second abutment surface 723d for abutting against the first abutment surface 222d. The second abutment surface 723d is a flat surface. The second abutment surface 723d also includes an opening 7224d that serves as the outlet of the vertical channel 7225d.

[0066] A sealing gasket 71d is disposed between the second abutment surface 723d and the first abutment surface 222d to form a seal between them. Corresponding to the fastening hole 224d on the fixed scroll 20d, the inner portion is provided with a through hole 721d for the fastener 73d to pass through, and the sealing gasket 71d is provided with a through hole 712d for the fastener 73d to pass through. Corresponding to the opening 7224d at the second abutment surface 723d, the sealing gasket 71d is provided with an opening 711d that is aligned with and communicates with the second opening 7224d. When installing and fixing the jet enthalpy-enhancing connector 70d to the stationary vortex 20, the jet enthalpy-enhancing connector 70d is first placed in the receiving part 221d. Then, the fastener 73d passes through the through hole 721d of the inner part, the through hole 712d of the sealing gasket 71d, and finally inserts into the fastening hole 224d of the stationary vortex 20d, thereby fixing the jet enthalpy-enhancing connector 70d in place on the stationary vortex 20d.

[0067] After the jet enthalpy-enhancing connector 70d is installed on the fixed vortex 20d, the opening 7224d at the second contact surface 723d aligns and communicates with the opening 711d on the sealing gasket 71d, while the first opening 2233d at the first contact surface 222d is located within the channel 223d. This creates a jetting channel within the jet enthalpy-enhancing connector 70d and the fixed vortex 20c, suitable for conveying jet enthalpy-enhancing fluid from the jet enthalpy-enhancing fluid source to at least one compression chamber of the vortex mechanism. See also Figure 15The injection channel includes a first channel section, a second channel section, and a third channel section connected sequentially from the outside to the inside of the fixed scroll compressor 20d. The first channel section is located in the outer portion 726d of the jet enthalpy-enhancing connector device 70d, and is composed of a horizontal channel 722dc and a vertical channel 7225d within the outer portion 726d. One end of the vertical channel 7225d is connected to the horizontal channel 7223d, and the other end is connected to the channel 223d through an opening 7224d formed at the second contact surface 723d and located within the channel 223d. The second channel section is defined by the channel 223d between the inner portion and the fixed scroll compressor 20d. The third channel section is formed approximately along the axial direction of the scroll compressor within the end plate 22, and is composed of vertical channels communicating with at least one compression chamber of the compressor. The number of vertical channels corresponds to the number of ends of the channels. On the one hand, since the first opening 2233d is arranged in the channel 223d, the vertical channel can communicate with the channel 223d. On the other hand, since the outlet of the vertical channel 7225d (the opening 7224d on the second abutment surface 723d) is arranged in the channel 223d, the channel 223d can communicate with the vertical channel 7225d and the horizontal channel 7223d in the outer part 726d and connect to the jet enthalpy-enhancing fluid source. Thus, the fluid from the jet enthalpy-enhancing fluid source can flow sequentially through the horizontal channel 7223d, the vertical channel 7225d, the opening 7224d, and the opening 711d on the sealing gasket 71d into the channel 223d, and then flow in two different directions in the channel 223d and finally enter the first opening 2233d and the vertical channel in the end plate 22, thereby entering at least one compression chamber of the compressor.

[0068] In the fourth embodiment, similar to the third exemplary embodiment, not only is the jet enthalpy enhancement design realized to effectively improve the overall performance of the compressor system, but it is also particularly suitable for situations where the machining allowance of the upper end face (second end face) of the fixed scroll is insufficient. Furthermore, by forming a groove at the second end face of the fixed scroll as part of the injection channel, the manufacturing and processing of the jet enthalpy enhancement connector is simplified, and the jet enthalpy enhancement connector is easier to position and install on the fixed scroll, which helps to reduce production costs.

[0069] Furthermore, those skilled in the art will understand that the channels can be formed not only at the second contact surface of the jet enthalpy-enhancing connector or at the first contact surface of the fixed vortex, but also at both the first and second contact surfaces. By aligning and sealing the two channels on the first and second contact surfaces, they together form the second channel section of the jet channel. This structure and arrangement can further increase the flow area of ​​the jet channel (second channel section), thereby additionally providing an improved jet efficiency.

[0070] Figure 16a and Figure 16bThe image shows the fixed scroll compressor 20e and the jet enthalpy-increasing connector device 70e according to a fifth embodiment of the present invention. In the fifth embodiment of the present invention, the scroll compressor has essentially the same main structure and function as the scroll compressor 100a of the first embodiment, and therefore will not be described again. The difference lies in that the jet enthalpy-increasing connector device 70e and the fixed scroll compressor 20e of the fifth embodiment of the present invention have different structures and connection methods than the jet enthalpy-increasing connector device 70a and the fixed scroll compressor 20a of the first embodiment.

[0071] like Figure 16a and Figure 16b As shown, the fixed scroll compressor 20e includes a receiving portion 221e for accommodating the jet enthalpy-enhancing connector device 70e, the receiving portion 221e being disposed at the second end face of the end plate 22 of the fixed scroll compressor 20e. The receiving portion 221e is generally arc-shaped, its arc extending from a point on the second end face that roughly corresponds to the position of one compression chamber to a point that roughly corresponds to another compression chamber. The receiving portion 221e can be configured as a recessed portion recessed from the second end face, or it can be non-recessed. The receiving portion 221e includes a first abutment surface 222e extending generally along the axial direction of the scroll compressor, the first abutment surface 222e for abutting against the jet enthalpy-enhancing connector device 70e, and a first opening 233e is also formed at the first abutment surface 222e. The receiving portion 221e is disposed within the high-pressure zone CH. The end plate 22 of the fixed scroll compressor 20e also has two different bent channels connecting the compression chamber. Each bent channel includes an axial section extending generally along the axial direction of the scroll compressor and a transverse section extending generally perpendicular to the axial direction of the scroll compressor. One end of the bent channel (axial section) is connected to a compression chamber of the compressor, and the other end of the bent channel (transverse section) extends to a first abutment surface 222e and forms a first opening 233e at the first abutment surface 222e.

[0072] The vapor injection enthalpy-enhancing connector 70e includes an inner connection, an outer connection 72e, and a connector 73e connecting the inner and outer connections 72e. Alternatively, the outer connection 72e and the inner connection can be integrally formed. The outer connection 72e is generally straight and has an internal channel 722e for connecting to a vapor injection enthalpy-enhancing fluid source outside the compressor. The inner connection is constructed as a tubular member extending generally perpendicular to the axial direction of the scroll compressor. The tubular member can be constructed to be flexible. The inner connection connects to the connector 73e at approximately the midpoint of the extension path of its tubular member, thereby connecting to the outer connection 726c. Alternatively, the connector 73e can be constructed as a tee, and the inner connection is constructed including a first inner tube 74e and a second inner tube 75e extending arcuately from the two outlet ports of the connector 73e toward the left and right sides of the axis of the outer connection 726c, respectively. One end of the first inner pipe 74e and the second inner pipe 75e are respectively connected to the two outlet ports of the connector 73e, and the other end is respectively constructed as a first abutment end 741e and abutment end 751e. The first abutment end 741e of the first inner pipe 74e and the second abutment end 751e of the second inner pipe 75e each include their respective pipe outlets, a second abutment surface for abutting against the first abutment surface 222e, and a sealing element (not shown) for sealing between the first abutment surface and the second abutment surface.

[0073] When installing and fixing the jet enthalpy-enhancing connector 70e to the fixed vortex 20e, the jet enthalpy-enhancing connector 70e is first placed in the receiving part 221e, and then the first abutting surface 222e abuts against the second abutting surface. The first abutting end 741e and the second abutting end 751e can be at least partially inserted into the first opening 233e on the first abutting surface 222e, thereby fixing the first inner tube 74e and the second inner tube 75e to the fixed vortex 20e and finally fixing the jet enthalpy-enhancing connector 70e in place on the fixed vortex 20e.

[0074] After the jet enthalpy-enhancing connector 70e is installed on the stationary vortex 20e, the pipe outlets of the first abutting end 741e of the first inner pipe 74e and the second abutting end 751e of the second inner pipe 75e are aligned and connected with the first opening 233e on the first abutting surface 222e of the stationary vortex 20e. This forms a jet channel within the jet enthalpy-enhancing connector 70e and the stationary vortex 20e, suitable for conveying jet enthalpy-enhancing fluid from a jet enthalpy-enhancing fluid source to at least one compression chamber of the vortex mechanism. The jet channel includes a first channel section, a second channel section, and a third channel section connected sequentially from the outside to the inside of the stationary vortex 20e. The first channel section is located in the outer portion 72e of the jet enthalpy-enhancing connector 70e, specifically formed by the channel 722e of the outer portion 72e, the outlet of which is connected to an inlet port of the connector portion 73e. The second channel section is defined by the first inner pipe 74e and the second inner pipe 75e. The third channel section is formed within the end plate 22, consisting of a bent channel communicating with at least one compression chamber of the compressor. The transverse portion of the bent channel can accommodate the insertion portions of the first abutment end 741e and the second abutment end 751e. The number of bent channels corresponds to the number of inner tubes. Thus, fluid from the jet enthalpy-enhancing fluid source can sequentially flow through the channel 722e in the outer connection 72e, the connector 73e, and then flow in two different directions via the inner tubes 74e and 75e, ultimately entering the first opening 2233e and the bent channel within the end plate 22, thereby entering at least one compression chamber of the compressor.

[0075] Furthermore, in this example, two inner tubes (first inner tube 74e and second inner tube 75e) serve as two branches extending in different directions from the second channel segment. These are arranged approximately symmetrically to deliver the jet enthalpy-enhancing fluid to two approximately symmetrical compression chambers, thus facilitating compressor balance. However, those skilled in the art will understand that one or more inner tubes may be used. Additionally, the method of fixing the inner tube to the fixed vortex is not limited to the method described above where the abutting end is at least partially inserted into the first opening; other equivalent methods, such as screw fixing, can be used.

[0076] The scroll compressor according to the fifth embodiment of the present invention not only achieves jet enthalpy enhancement design to effectively improve the overall performance of the compressor system, but is also particularly suitable for situations where the machining allowance of the upper end face (second end face) of the fixed scroll is insufficient and the injection path is complex. Since the inner tube can be constructed to be flexible, there is no need to particularly restrict the extension path of the inner tube, nor is there a need to particularly restrict the shape matching between the receiving portion and the inner tube, thereby facilitating manufacturing and easily generating complex injection paths. Furthermore, the fixed scroll and jet enthalpy enhancement connector device has a simple structure, is easy to position and install, and helps to reduce manufacturing costs.

[0077] Although various embodiments of the invention have been described in detail herein, it should be understood that the invention is not limited to the specific embodiments described and shown herein, and other modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention. All such modifications and variations fall within the scope of the invention. Moreover, all components described herein can be replaced by other technically equivalent components.

Claims

1. A scroll compressor, said scroll compressor (100a, 100b) comprising: A housing (10) that encloses an internal space; as well as A vortex mechanism is disposed within the internal space. The vortex mechanism includes fixed vortices (20a, 20b, 20c, 20d, 20e). Each fixed vortex includes an end plate (22), a fixed vortex scroll (24) extending from a first end face of the end plate, and a circumferential wall (23) surrounding the end plate and the fixed vortex scroll. The fixed vortex is characterized in that it includes a sealing portion (26) located on the radially outer surface (231, 231') of the circumferential wall, the sealing portion being in sealing contact with the housing, thereby dividing the internal space into a high-pressure zone (CH) and a low-pressure zone (CL) located on both sides of the sealing portion and isolated from each other. The scroll compressor further includes jet enthalpy-enhancing connectors (70a, 70b, 70c, 70d, 70e), which are connected to the stationary scroll to form a jet channel suitable for delivering jet enthalpy-enhancing fluid from a jet enthalpy-enhancing fluid source to at least one compression chamber of the scroll mechanism. The fixed vortex includes receiving portions (221a, 221b, 221c, 221d, 221e) for accommodating the jet enthalpy-enhancing connector device. The receiving portion is disposed on the second end face of the end plate opposite to the first end face and / or on the radial outer surface of the circumferential wall. The receiving portion includes a first contact surface (222a, 222b, 222c, 222d, 222e) for contacting the jet enthalpy-enhancing connector device.

2. The scroll compressor according to claim 1, wherein, The injection channel includes a first channel segment, a second channel segment, and a third channel segment connected in sequence. The third channel segment is formed within the end plate and includes at least an axial section extending substantially along the axial direction of the scroll compressor to communicate with the at least one compression chamber. The first channel segment is formed within the jet enthalpy-enhancing connector and extends substantially perpendicular to the axial direction of the scroll compressor and is connected to the jet enthalpy-enhancing fluid source. The second channel segment is formed in the fixed scroll compressor and / or the jet enthalpy-enhancing connector.

3. The scroll compressor according to claim 2, wherein: The end plate has a connecting channel (2231a, 2232a) extending in a direction generally perpendicular to the axial direction of the scroll compressor to form the second channel segment. The connecting channel extends to the first abutment surface (222a) and forms a first opening (223a) at the first abutment surface. The jet enthalpy-enhancing connector device (70a) includes an outer part (726a) and an inner part (724a). The first channel segment is disposed in the outer part and the inner part. One end of the inner part is connected to the outer part, and the other end of the inner part includes a second abutting surface (723a) that abuts against the first abutting surface, thereby connecting the first channel segment to the first opening.

4. The scroll compressor according to claim 2, wherein: The jet enthalpy-enhancing connector (70e) includes an outer portion (72e) and an inner portion, wherein the first channel segment is disposed in the outer portion, and the inner portion is configured as a tubular member extending substantially perpendicular to the axial direction of the scroll compressor to define the second channel segment. The third channel segment extends to the first abutment surface (222e) and forms a first opening (233e) at the first abutment surface. One end of the inner part is connected to the outer part, and the other end of the inner part includes a second abutting surface that abuts against the first abutting surface, thereby connecting the second channel segment to the first opening.

5. The scroll compressor according to claim 2, wherein: The jet enthalpy-enhancing connector (70c, 70d) includes an outer portion (726c, 726d) and an inner portion. The first channel segment is disposed in the outer portion. The inner portion is constructed as a cover-like member extending generally perpendicular to the axial direction of the scroll compressor. The inner portion has a second abutment surface (723c, 723d) that abuts against the first abutment surface (222c, 222d). Channels (7221c, 7222c, 223d) are formed at the first abutment surface and / or the second abutment surface, thereby defining the second channel segment between the inner portion and the fixed scroll compressor. The third channel segment extends to the first abutment surface and forms a first opening (2233c, 2233d) at the first abutment surface, the first opening being located in the channel.

6. The scroll compressor according to claim 5, wherein, The external portion includes horizontal channels (7223c, 7223d) and vertical channels (7225c, 7225d) constituting the first channel segment. One end of the vertical channel is connected to the horizontal channel, and the other end of the vertical channel is connected to the channel.

7. The scroll compressor according to any one of claims 3 to 6, wherein, The jet enthalpy-enhancing connector device further includes sealing gaskets (71a, 71c, 71d), which are disposed between the first abutment surface and the second abutment surface to form a seal between them.

8. The scroll compressor according to any one of claims 2 to 6, wherein, The second channel segment includes a first branch and a second branch extending in different directions, through which the jet enthalpy-enhancing fluid enters the third channel segment.

9. The scroll compressor according to any one of claims 1 to 6, wherein, The first contact surface is configured to extend approximately along the axial direction of the scroll compressor or approximately in a direction perpendicular to the axial direction of the scroll compressor.

10. The scroll compressor according to any one of claims 1 to 6, wherein, The receiving portion is configured as a recess located on the second end face of the end plate and / or the radial outer surface of the circumferential wall.

11. The scroll compressor according to any one of claims 1 to 6, wherein, The accommodating part is located in the low-pressure area or the high-pressure area.

12. The scroll compressor according to any one of claims 3 to 6, wherein, The first opening can be one or more.

13. The scroll compressor according to any one of claims 1 to 6, wherein: The sealing portion is constructed as a flange protruding radially from the outer surface of the circumferential wall, the flange being interference-fitted with the housing; or The sealing portion is configured to include a groove recessed from the radially outer surface of the circumferential wall and a sealing element (233') accommodated in the groove, the sealing element abutting against the housing.

14. The scroll compressor according to any one of claims 1 to 6, wherein, The scroll compressor is a large-displacement scroll compressor.

Images