Compression module

Abstract

The invention provides a compression module which comprises a compression machine core, a shell, an end cover and a limiting structure, the limiting structure comprises a limiting piece, the limiting piece is connected with at least one of the compression machine core and the shell and the end cover, the compression machine core connected with the limiting piece and / or the shell are / is provided with an installation groove, and the limiting piece is partially located in the installation groove, so that the installation reliability of the end cover is improved; the invention further provides a compression module which comprises the compression machine core, the shell, the end cover and the limiting structure, the limiting structure comprises a protrusion and a groove, the protrusion and the groove which are matched are connected with at least one of the compression machine core and the shell and the end cover, and therefore the installation reliability of the end cover is improved.

Description

Technical Field

[0001] The present application belongs to the field of fluid compression systems, and in particular, relates to a compression module. Background Art

[0002] The compressor is an important component of the vapor compression refrigeration system. Its function is to compress the low-pressure and low-temperature refrigerant gas into high-pressure and high-temperature refrigerant gas.

[0003] A compressor casing generally consists of a shell and an end cover. The positioning of the end cover directly affects the structural stability of the two components after they are connected. In related technologies, the installation of the end cover cannot achieve ideal results, resulting in low reliability. Summary of the Invention

[0004] The present application aims to provide a compression module that helps to improve the installation reliability of the end cover.

[0005] In order to achieve the above-mentioned purpose, the present application provides a compression module, including a compressor core, a shell, an end cover and a limiting structure, the limiting structure including a limiting member, at least one of the compressor core and the shell is connected to the end cover through the limiting member, the compressor core and / or the shell connected to the limiting member has an installation groove, and the limiting member is partially located in the installation groove.

[0006] The compression module provided in the present application includes a compressor core, a shell, an end cover and a limiting structure. The limiting structure includes a limiting member, which connects at least one of the compressor core and the shell to the end cover. The compressor core and / or the shell connected to the limiting member have an installation groove, and the limiting member is partially located in the installation groove. The limiting member and the installation groove are used to locate the installation position of the end cover relative to the compressor core or the shell, thereby improving the installation reliability of the end cover.

[0007] The present application also provides a compression module, including a compressor core, a shell, an end cover and a limiting structure, wherein the limiting structure includes matching protrusions and grooves, the protrusions are located in the grooves, one of the protrusions and grooves is located in at least one of the compressor core and the shell, and the other is located in the end cover.

[0008] The present application provides a compressor core, a housing, an end cover and a limiting structure. The limiting structure includes a protrusion and a groove. The matching protrusion and groove connect at least one of the compressor core and the housing with the end cover to locate the installation position of the end cover relative to the compressor core or the housing, thereby improving the installation reliability of the end cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 An exploded diagram of a compression module provided in an embodiment of the present application;

[0011] Figure 2 A structural diagram of an end cover in a compression module provided in an embodiment of the present application;

[0012] Figure 3 A partial cross-sectional view of a compression module provided in an embodiment of the present application;

[0013] Figure 4 An exploded diagram of another compression module provided in an embodiment of the present application;

[0014] Figure 5 A partial cross-sectional view of another compression module provided in an embodiment of the present application.

[0015] In the figure: 100-compressor core; 10-slot hole; 11-discharge port; 200-housing; 20-housing cavity; 201-inner cavity wall; 21-first end; 22-second end; 300-end cover; 301-end cover body; 302-boss; 31-limiting groove; 321-first end face; 322-second end face; 33-end cover peripheral wall; 400-limiting structure; 40-pin shaft; 41-protrusion; 42-groove; 500-mounting groove; 51-groove peripheral wall; 600-flow channel portion; 60-flow channel; 7-seal. DETAILED DESCRIPTION

[0016] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0017] The terms used in this application are for the purpose of describing particular embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0018] It should be understood that the words “first”, “second” and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as “a” or “an” do not indicate a quantity limitation, but rather indicate the presence of at least one; “plurality” indicates a quantity of two or more. Unless otherwise indicated, words such as “front”, “rear”, “lower” and / or “upper” are for ease of description only and are not limited to one position or one spatial orientation. Words such as “include” or “comprising” and similar terms mean that the elements or objects appearing before “include” or “comprising” cover the elements or objects listed after “include” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0019] The compression module of the exemplary embodiment of the present application is described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or be combined with each other.

[0020] The compression module is an important component of the vapor compression refrigeration system. Its function is to compress the low-pressure and low-temperature refrigerant gas into high-pressure and high-temperature refrigerant gas.

[0021] A compression module of the present application includes a compressor core 100, a shell 200, an end cover 300 and a limiting structure 400, the limiting structure 400 includes a limiting member, at least one of the compressor core 100 and the shell 200 is connected to the end cover 300 through the limiting member, the compressor core 100 and / or the shell 200 connected to the limiting member has an installation groove 500, and the limiting member is partially located in the installation groove 500.

[0022] The compression module of the present application includes a compressor core 100, a shell 200, an end cover 300 and a limiting structure 400. The limiting structure 400 includes a limiting member, which connects at least one of the compressor core 100 and the shell 200 to the end cover 300. The compressor core 100 and / or the shell 200 connected to the limiting member have an installation groove 500. The limiting member is partially located in the installation groove 500. The limiting member and the installation groove 500 are used to cooperate to position the installation position of the end cover 300 relative to the compressor core 100 or the shell 200, thereby improving the installation reliability of the end cover 300.

[0023] According to a specific embodiment of this application, please refer to Figures 1 to 3 The compression module includes a compressor core 100 and a shell 200 , wherein the compressor core module 100 is used to compress the medium entering the compression module, the shell 200 has a shell cavity 20 , and the compressor core 100 is at least partially located in the shell cavity 20 .

[0024] The compression module includes an end cover 300 and a limiting structure 400, the limiting structure 400 includes a limiting member, at least one of the compressor core 100 and the shell 200 is connected to the end cover 300 through the limiting member, the compressor core 100 and / or the shell 200 connected to the limiting member has an installation groove 500, and the limiting member is partially located in the installation groove 500.

[0025] That is, the compressor core 100 is connected to the end cover 300 through a limit member, in other words, the limit member is connected to the compressor core 100, the limit member is connected to the end cover 300, the limit member is located between the compressor core 100 and the end cover 300, the compressor core 100 has an installation groove 500, and the limit member is partially located in the installation groove 500; or, the shell 200 is connected to the end cover 300 through a limit member, in other words, the limit member is connected to the shell 200, the limit member is connected to the end cover 300, the limit member is located between the shell 200 and the end cover 300, the shell 200 has an installation groove 500, and the limit member is partially located in the installation groove 500; or, both the compressor core 100 and the shell 200 are connected to the end cover 300 through a limit member, the compressor core 100 and the shell 200 both have an installation groove 500, and the limit member is partially located in the installation groove 500.

[0026] This embodiment is described by taking the compressor core 100 as an example in which the compressor core 100 is connected to the end cover 300 via a stopper. Figure 1 As shown, the limiting member is located between the compressor core 100 and the end cover 300 , the compressor core 100 is connected to the limiting member, and the limiting member is connected to the end cover 300 , wherein the limiting member is used to connect the end cover 300 and the compressor core 100 .

[0027] Correspondingly, the compressor core 100 has a mounting groove 500 , and the limiting member is located in the mounting groove 500 .

[0028] By opening an installation groove 500 in the compressor core 100 and placing a limiting member in the installation groove 500 of the compressor core 100, the limiting member is assembled and fixed relative to the compressor core 100, and the limiting member is connected to the end cover 300, thereby realizing the installation and fixation of the end cover 300 relative to the compressor core 100. The positioning of the end cover 300 relative to the compressor core 100 during the installation and fixation process is simultaneously realized through the installation groove 500, which not only improves the installation reliability of the end cover 300 relative to the compressor core 100, but also realizes the rapid positioning of the end cover 300 relative to the compressor core 100 during the installation and fixation process.

[0029] In the present application, the housing 200 has a first end 21 and a second end 22 , the first end 21 and the second end 22 are arranged along the length direction of the housing 200 , and the end cover 300 is located at at least one of the first end 21 and the second end 22 .

[0030] The end cap 300 is located at at least one of the first end 21 and the second end 22. In other words, the end cap 300 is located at the first end 21; or, the end cap 300 is located at the second end 22; or, the end cap 300 is located at the first end 21 and the second end 22. When the end cap 300 is located at the first end 21 and the second end 22, both ends of the housing 200 are covered with end caps 300, that is, two end caps 300 are provided, and the two end caps 300 are located at the first end 21 and the second end 22, respectively.

[0031] In this embodiment, the first end 21 of the shell 200 is defined as the discharge end of the compression module, that is, the fluid compressed by the compressor core 100 is discharged from the compression module from the first end 21 of the shell 200; the second end 22 of the shell 200 is the side of the shell 200 away from the first end 21 along its length direction. In this embodiment, the second end 22 of the shell 200 is defined as the inlet end of the compression module, that is, the fluid that needs to enter the compressor core 100 to complete compression enters the compression module from the second end 22 of the shell 200.

[0032] In this embodiment, the discharge end and the inlet end of the compression module are respectively located at two ends of the shell 200. Of course, in some other embodiments, the discharge end and the inlet end of the compression module can also be located at the same end of the shell 200.

[0033] In the present application, the end cap 300 located at the first end 21 is defined as a first end cap, and the end cap 300 located at the second end 22 is defined as a second end cap. The structures of the first end cap and the second end cap may be the same or different.

[0034] This embodiment is described by taking the end cover 300 located at the discharge end of the compression module as an example. Figure 1 shown.

[0035] In the present application, the length direction of at least a portion of the mounting groove 500 is parallel to the length direction of the housing 200 .

[0036] This embodiment is described using the example that the length direction of the mounting groove 500 is parallel to the length direction of the shell 200. The limiting member of this embodiment is preferably but not limited to the pin shaft 40 to achieve axial positioning of the end cover 300 and the compressor core 100 or positioning along the length direction of the shell 200.

[0037] In this embodiment, the entire compressor core 100 is located in the housing cavity 20, and part of the stopper contacts the groove peripheral wall 51 forming the installation groove 500, that is, part of the pin 40 contacts the groove peripheral wall 51 forming the installation groove 500; in other words, the groove peripheral wall 51 is located in the compressor core 100, and part of the pin 40 contacts the groove peripheral wall 51;

[0038] Optionally, part of the pin shaft 40 contacts the bottom wall of the groove forming the installation groove 500. In other words, the bottom wall of the groove is located at the compressor core 100, and part of the pin shaft 41 contacts the bottom wall of the groove.

[0039] In this embodiment, if Figure 3 As shown, the length direction of the pin shaft 40 is parallel to the length direction of the housing 200 , that is, the length direction of the pin shaft 40 is parallel to the length direction of the installation slot 500 .

[0040] The end cap 300 includes an end cap body 301 and a boss 302. The end cap body 301 and the boss 302 are assembled and connected or are an integral part. The assembly connection between the end cap body 301 and the boss 302 includes but is not limited to one or more of screw connection, bolt connection, welding, adhesive connection, and clamping connection.

[0041] Please refer to Figure 2 As shown, the end cover body 301 of this embodiment is a cylindrical structure, and the end cover body 301 and the boss 302 of this embodiment are an integral part.

[0042] The boss 302 is located on a side of the end cover body 301 close to the compressor core 100 , and the boss 302 abuts against the compressor core 100 , that is, the boss 302 generates a squeezing force on the compressor core 100 .

[0043] Optionally, the end cover 300 has a limiting groove 31 , at least part of the limiting groove 31 is located on the boss 302 , and at least part of the limiting member is located on the limiting groove 31 ;

[0044] That is, the limiting groove 31 is formed in the boss 302 ; or, the limiting groove 31 is formed in the boss 302 and the end cover body 301 .

[0045] In this embodiment, the limiting groove 31 extends from an end surface of the boss 302 away from the end cover body 301 toward the end cover body 301 .

[0046] The limiting member is connected to the end cover 300;

[0047] The length direction of the pin shaft 40 is parallel to the length direction of the shell 200. One end of the pin shaft 40 is connected to the end cover 300, and the other end is connected to the compressor core 100. One of the end cover 300 and the compressor core 100 is connected to the pin shaft 40 by an interference fit, and the other is connected by a clearance fit.

[0048] That is, the pin shaft 40 in this embodiment is connected to the end cover 300 by interference fit, one end of the pin shaft 40 is located in the limiting groove 31, and the other end is located in the installation groove 500, and the pin shaft 40 is connected to the compressor core 100 by interference fit.

[0049] Preferably, in this embodiment, the housing 200 is an extruded part, and the end cap 300 is welded to the housing 200. The extruded housing 200 is an integral part, and its overall sealing performance is relatively strong.

[0050] In the present application, the compression module further includes a flow channel portion 600, which is assembled and connected to the housing 200 or is an integral part. The assembly connection between the flow channel portion 600 and the housing 200 includes, but is not limited to, one or more of screw connection, bolt connection, welding, adhesive connection, and clamping connection.

[0051] This embodiment is described by taking the flow channel portion 600 and the housing 200 as an integral part as an example. Figure 1 and Figure 3 shown.

[0052] Preferably, the flow channel portion 600 is a plate-shaped structure, and the flow channel portion 600 has a flow channel 60, and the flow channel 60 is connected to the shell cavity 20;

[0053] The fluid entering the compression module can enter the compressor core 100 through the flow channel 60 to complete compression; and / or, the fluid after compression can flow out of the compression module through the flow channel 60.

[0054] The distribution of the flow channels 60 in the flow channel portion 600 can be arranged and designed according to actual needs.

[0055] The mounting groove 500 is configured as a circular hole, the limiting groove 31 is configured as a circular hole, a portion of the pin 41 is located in the mounting groove 500, and another portion of the pin 41 is located in the limiting groove 31;

[0056] The welding and fixing of the end cover 300 and the housing 200 includes, but is not limited to, one or more of arc welding, laser welding, electron beam welding, friction welding, and ultrasonic welding, and the end cover 300 and the housing 200 are sealed at the weld formed therebetween;

[0057] Optionally, a seal 7 is provided between the compressor core 100 and the housing 200, such as Figure 3 shown.

[0058] The compressor core 100 is a pre-assembled module, and the entire compressor core 100 is assembled and connected to the housing 200 .

[0059] The compressor core 100 includes a drive unit and a compression mechanism. The drive unit provides driving force for the compression mechanism, which is used to compress the fluid. The compressor core 100 is a preassembled module. The entire compressor core module 100 is assembled and connected to the housing 200. The assembly position accuracy of the compression mechanism and the drive unit can be determined when the compressor core module 100 is assembled. That is, the compression mechanism and the drive unit can be assembled and positioned when the compressor core module 100 is preassembled, thereby reducing the dependence of the compression mechanism and the drive unit on the housing 200 during assembly, thereby reducing the processing accuracy requirements of the housing 200 of this embodiment.

[0060] When assembling the compression module, the compression mechanism can be assembled and connected with the driving part to form a compressor core module 100.

[0061] That is, when assembling the compression module, the compression mechanism can be assembled and connected with the driving part to form a compressor core module 100, and then the compressor core module 100 is assembled and connected with the shell 200, which changes the connection method of the compression mechanism and the driving part respectively assembled with the shell 200 in the related art. The compression mechanism and the driving part are first assembled and connected into a compressor core module 100, and then the compressor core module 100 is connected with the shell 200. This embodiment is conducive to reducing the assembly deviation between the compression mechanism and the driving part, that is, the assembly accuracy between the compression mechanism and the driving part is high.

[0062] like Figure 3 As shown, the end cover 300 of this embodiment has a first end surface 321 and a second end surface 322. A projection plane is defined, and the projection plane is perpendicular to the length direction of the housing 200. The first end surface 321 and the second end surface 322 have the same projection shape on the same projection plane. The first end surface 321 is closer to the compressor core 100 than the second end surface 322.

[0063] In this embodiment, the first end surface 321 and the second end surface 322 are parallel, and the first end surface 321 is perpendicular to the length direction of the housing 200. Figure 3 As shown, of course, in some other embodiments, the first end surface 321 and the second end surface 322 may be configured as two non-parallel surfaces.

[0064] The entire compressor core 100 is located in the housing cavity 20, the boss 30 is in contact with the compressor core 100, and the second end surface 322 is located outside the housing cavity 20. That is, the portion of the end cover 300 having the second end surface 322 is located outside the housing cavity 20, so as to facilitate confirmation that the end cover 300 has fully entered the housing cavity 20.

[0065] Preferably, in this embodiment, the end cover 300 is connected to the housing 200 with a clearance fit; the flow channel portion 600 and the housing 200 are an integral part formed by extrusion.

[0066] Optional, such as Figure 2As shown, the number of bosses 302 provided in this embodiment is three, and the three bosses 302 are evenly distributed on the end cover body 301 along the lateral wall of the cylindrical end cover body 301; of course, in some other embodiments, the number of bosses 302 can be set to two or more, or the bosses 302 extend along the lateral wall of the cylindrical end cover body 301 and are set as an entire annular structure, and in addition to satisfying the aforementioned functions, the structural shape of the bosses 302 cannot affect the parts that need to be installed on the compressor core 100, such as bolts, oil return holes or other structures. On this basis, the present application does not limit the shape contour of the bosses 302, and the above-mentioned structural forms and the corresponding number of bosses 302 are all within the protection scope of the present application.

[0067] Optionally, the compressor core 100 has a discharge port 11 , through which the fluid compressed by the compressor core 100 can be discharged from the compressor core 100 ; the discharge port 11 is connected to the flow channel 60 ; the fluid discharged from the compressor core 100 can enter the flow channel 60 .

[0068] The present application also provides a compression module, which includes a compressor core 100, a shell 200, an end cover 300 and a limiting structure 400, the limiting structure 400 includes a matching protrusion 41 and a groove 42, the protrusion 41 is located in the groove 42, one of the protrusion 41 and the groove 42 is located in at least one of the compressor core 100 and the shell 200, and the other is located in the end cover 300.

[0069] The present application provides a compressor core 100, a housing 200, an end cover 300 and a limiting structure 400. The limiting structure 400 includes a protrusion 41 and a groove 42. The mating protrusion 41 and the groove 42 connect at least one of the compressor core 100 and the housing 200 with the end cover 300 to position the installation position of the end cover 300 relative to the compressor core 100 or the housing 200, thereby improving the installation reliability of the end cover 300.

[0070] According to a specific embodiment of this application, please refer to Figure 4 and Figure 5 The compression module includes a compressor core 100 and a shell 200 , wherein the compressor core module 100 is used to compress the medium entering the compression module, the shell 200 has a shell cavity 20 , and the compressor core 100 is at least partially located in the shell cavity 20 .

[0071] The compression module includes an end cover 300 and a limiting structure 400, the limiting structure 400 includes a matching protrusion 41 and a groove 42, the protrusion 41 is located in the groove 42, one of the protrusion 41 and the groove 42 is located in at least one of the compressor core 100 and the shell 200, and the other is located in the end cover 300.

[0072] That is, the compressor core 100 is connected to the end cover 300 through the limiting structure 400. In other words, the limiting structure 400 is connected to the compressor core 100, the limiting structure 400 is connected to the end cover 300, the limiting structure 400 is located between the compressor core 100 and the end cover 300, and the limiting structure 400 includes a matching protrusion 41 and a groove 42, wherein the protrusion 41 is located on the compressor core 100 and the groove 42 is located on the end cover 300, or the protrusion 41 is located on the end cover 300 and the groove 42 is located on the compressor core 100; or the housing 200 is connected to the limiting structure 400 is connected to the end cover 300, in other words, the limiting structure 400 is connected to the shell 200, the limiting structure 400 is connected to the end cover 300, the limiting structure 400 is located between the shell 200 and the end cover 300, and the limiting structure 400 includes a matching protrusion 41 and a groove 42, wherein the protrusion 41 is located on the shell 200 and the groove 42 is located on the end cover 300, or the protrusion 41 is located on the end cover 300 and the groove 42 is located on the shell 200; or, both the compressor core 100 and the shell 200 are connected to the end cover 300 through the limiting structure 400.

[0073] This embodiment is described by taking the case where the housing 200 is connected to the end cover 300 via the limiting structure 400 as an example. Figure 4 As shown, the limiting structure 400 is located between the shell 200 and the end cover 300 , the shell 200 is connected to the limiting structure 400 , and the limiting structure 400 is connected to the end cover 300 , wherein the limiting structure 400 is used to connect the end cover 300 and the shell 200 .

[0074] This embodiment is described by taking the example that the protrusion 41 of the limiting structure 400 is located on the end cover 300 and the groove 42 of the limiting structure 400 is located on the housing 200. Figure 4 shown.

[0075] The end cover 300 is assembled and fixed relative to the shell 200 through the matching protrusions 41 and grooves 42. The end cover 300 is positioned relative to the shell 200 during the installation and fixing process through the matching protrusions 41 and grooves 42. This not only improves the installation reliability of the end cover 300 relative to the shell 200, but also enables the end cover 300 to be quickly positioned relative to the shell 200 during the installation and fixing process.

[0076] In the present application, the housing 200 has a first end 21 and a second end 22 , the first end 21 and the second end 22 are arranged along the length direction of the housing 200 , and the end cover 300 is located at at least one of the first end 21 and the second end 22 .

[0077] The end cap 300 is located at at least one of the first end 21 and the second end 22. In other words, the end cap 300 is located at the first end 21; or, the end cap 300 is located at the second end 22; or, the end cap 300 is located at the first end 21 and the second end 22. When the end cap 300 is located at the first end 21 and the second end 22, both ends of the housing 200 are covered with end caps 300, that is, two end caps 300 are provided, and the two end caps 300 are located at the first end 21 and the second end 22, respectively.

[0078] In this embodiment, the first end 21 of the shell 200 is defined as the discharge end of the compression module, that is, the fluid compressed by the compressor core 100 is discharged from the compression module from the first end 21 of the shell 200; the second end 22 of the shell 200 is the side of the shell 200 away from the first end 21 along its length direction. In this embodiment, the second end 22 of the shell 200 is defined as the inlet end of the compression module, that is, the fluid that needs to enter the compressor core 100 to complete compression enters the compression module from the second end 22 of the shell 200.

[0079] In this embodiment, the discharge end and the inlet end of the compression module are respectively located at two ends of the shell 200. Of course, in some other embodiments, the discharge end and the inlet end of the compression module can also be located at the same end of the shell 200.

[0080] In the present application, the end cap 300 located at the first end 21 is defined as a first end cap, and the end cap 300 located at the second end 22 is defined as a second end cap. The structures of the first end cap and the second end cap may be the same or different.

[0081] This embodiment is described by taking the end cover 300 located at the discharge end of the compression module as an example. Figure 4 shown.

[0082] The protrusion 41 is assembled and connected to the end cover 300 or is an integral part. The end cover 300 has an end cover peripheral wall 33. The protrusion 41 extends in a direction perpendicular to the length of the shell 200 and protrudes from the end cover peripheral wall 33 to achieve axial positioning of the end cover 300 and the shell 200 or positioning along the length direction of the shell 200.

[0083] The assembly connection between the protrusion 41 and the end cover 300 includes but is not limited to one or more of screw connection, bolt connection, welding, adhesive connection, and clamping connection.

[0084] This embodiment is described by taking the protrusion 41 and the end cover 300 as an integral part. Figure 4 shown.

[0085] In the present application, the housing 200 has a housing cavity 20 and an inner cavity wall 201 , and the compressor core 100 is at least partially located in the housing cavity 20 ;

[0086] In this embodiment, the entire compressor core 100 is located in the housing cavity 20 .

[0087] The compressor core 100 has a slot 10 , and at least a portion of the boss 302 is located in the slot 10 ;

[0088] Part of the boss 302 contacts the slot peripheral wall 101 forming the slot 10;

[0089] The groove 42 extends from the inner cavity wall 201 toward a side away from the compressor core 100 , and a portion of the protrusion 41 contacts the inner cavity wall 201 forming the groove 42 .

[0090] The slot 10 has the same profile as the cross section of the boss 302 .

[0091] The end cap 300 includes an end cap body 301 and a boss 302. The end cap body 301 and the boss 302 are assembled and connected or are an integral part. The assembly connection between the end cap body 301 and the boss 302 includes but is not limited to one or more of screw connection, bolt connection, welding, adhesive connection, and clamping connection.

[0092] Please refer to Figure 4 As shown, the end cover body 301 of this embodiment is a cylindrical structure, and the end cover body 301 and the boss 302 of this embodiment are an integral part.

[0093] The boss 302 is located on the side of the end cover body 301 close to the compressor core 100 , and the boss 302 abuts against the compressor core 100 , that is, the boss 302 exerts an extruding force on the compressor core 100 ; the side of the boss 302 away from the end cover body 301 is located in the slot 10 .

[0094] Optionally, in this embodiment, the boss 302 located in the slot 10 also abuts against the compressor core 100 .

[0095] In the present application, the compression module includes a flow channel portion 600, which is assembled and connected to the shell 200 or is an integral part; the assembly connection between the flow channel portion 600 and the shell 200 includes but is not limited to one or more of screw connection, bolt connection, welding, gluing, and clamping.

[0096] This embodiment is described by taking the flow channel portion 600 and the housing 200 as an integral part as an example. Figure 4 shown.

[0097] Preferably, the flow channel portion 600 is a plate-shaped structure, and the flow channel portion 600 has a flow channel 60, and the flow channel 60 is connected to the shell cavity 20;

[0098] The fluid entering the compression module can enter the compressor core 100 through the flow channel 60 to complete compression; and / or, the fluid after compression can flow out of the compression module through the flow channel 60.

[0099] The distribution of the flow channels 60 in the flow channel portion 600 can be arranged and designed according to actual needs.

[0100] The shell 200 is an extruded part; the end cover 300 is welded to the shell 200, and the end cover 300 and the shell 200 are sealed at the weld formed therebetween; the welding and fixing of the end cover 300 and the shell 200 include but are not limited to one or more of arc welding, laser welding, electron beam welding, friction welding and ultrasonic welding.

[0101] The compressor core 100 is a pre-assembled module, and the entire compressor core 100 is assembled and connected to the housing 200 .

[0102] For the description of the compressor core 100 being a pre-assembled module, please refer to the above field description.

[0103] Preferably, in this embodiment, the end cover 300 is connected to the housing 200 with a clearance fit; the flow channel portion 600 and the housing 200 are an integral part formed by extrusion.

[0104] Optionally, in this embodiment, the number of bosses 302 is three, and the three bosses 302 are evenly distributed on the end cover body 301 along the lateral wall of the cylindrical end cover body 301. Correspondingly, there are also three slots 10 located on the compressor core 100, and the three slots 10 are also evenly distributed on the compressor core 100. Of course, in some other embodiments, the number of bosses 302 can be set to two or more, or the bosses 302 extend along the lateral wall of the cylindrical end cover body 301 and are set as an entire annular structure. In addition to satisfying the aforementioned functions, the structural shape of the bosses 302 cannot affect the components that need to be installed on the compressor core 100, such as bolts, oil return holes or other structures. On this basis, the present application does not limit the shape contour of the bosses 302, and the above-mentioned structural forms and corresponding numbers of bosses 302 are all within the protection scope of the present application.

[0105] Preferably, the size of the slot 10 along the length direction parallel to the housing 200 is the same as the size of the protrusion 41 along the length direction parallel to the housing 200 .

[0106] Optionally, the three slots 10 in this embodiment have the same size along the length direction parallel to the shell 200. Of course, in some other embodiments, the sizes of the three slots 10 along the length direction parallel to the shell 200 are different from each other or partially the same.

[0107] The end cover 300 has a first end surface 321 and a second end surface 322. The first end surface 321 and the second end surface 322 are parallel. The first end surface 321 is perpendicular to the length direction of the shell 200. The first end surface 321 is closer to the compressor core 100 than the second end surface 322. Figure 5 As shown;

[0108] The entire compressor core 100 is located in the housing cavity 20 , the boss 30 contacts the compressor core 100 , the end cover 300 is located at the first end 21 , and the housing 200 has a first housing end surface 210 at the first end 21 ;

[0109] The compressor core 100 is defined as having a first reference plane A, the first reference plane A is parallel to the first end surface 321, the distance from the first reference plane A to the second end surface 322 is S1, and the maximum distance from the first reference plane A to the first shell end surface 210 is S2. Figure 5 As shown, S1 ≥ S2, so as to facilitate confirmation that the end cover 300 has completely entered the shell cavity 20.

[0110] Optionally, in this embodiment, the protrusion 41 extends from the second end surface 322 to the first end surface 321, and the extension height of the protrusion 41 along the length direction parallel to the shell 200 is less than the thickness of the end cover body 301 along the length direction parallel to the shell 200, such as Figure 5 Of course, in some other embodiments, the height of the protrusion 41 extending from the second end surface 322 to the first end surface 321 is greater than or equal to the thickness of the end cover body 301 .

[0111] Optionally, in this embodiment, the protrusion 41 is configured as follows Figure 4 In the ear-shaped structure shown, the groove 42 has the same contour structure as the protrusion 41. Of course, as Figure 4 The structure of the protrusion 41 shown is the preferred structure of the present application, and it can also be designed into other structural shapes.

[0112] It should be noted that the one-piece part described in this article is a non-assembly connection. It can be processed by casting, forging, stamping, extrusion, metal injection molding, metal powder metallurgy, etc. to form a base, and then processed by machining; it can also be directly processed into an one-piece part by casting, forging, stamping, extrusion, metal injection molding, metal powder metallurgy, etc.

[0113] Some technical implementations in the above embodiments can be combined or replaced.

[0114] The technical principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the above description is merely for the purpose of explaining the principles of the present application and is not to be construed in any way as a specific limitation on the scope of protection of the present application. Based on the explanations herein, those skilled in the art can, without inventive effort, conceive of other specific embodiments of the present application or equivalent alternatives, which fall within the scope of protection of the present application.

Claims

1. A compression module, characterized in that: It includes a compressor core, a shell, an end cover and a limiting structure, the limiting structure includes a limiting member, at least one of the compressor core and the shell is connected to the end cover through the limiting member, the compressor core and / or the shell connected to the limiting member has an installation groove, and the limiting member is partially located in the installation groove.

2. The compression module according to claim 1, wherein: The housing has a first end and a second end, the first end and the second end are arranged along the length direction of the housing, and the end cover is located at at least one of the first end and the second end; The length direction of at least a portion of the mounting slot is parallel to the length direction of the housing.

3. The compression module according to claim 1 or 2, characterized in that: The housing has a housing cavity, the compressor core is at least partially located in the housing cavity, and part of the limiting member is in contact with the peripheral wall of the mounting groove; The end cover comprises an end cover body and a boss, and the end cover body and the boss are assembled and connected or are an integral part.

4. The compression module according to claim 3, wherein: The end cover has a limiting groove, at least part of the limiting groove is located on the boss, and at least part of the limiting member is located on the limiting groove; The limiting member is connected to the end cover; the limiting member includes a pin shaft, the length direction of the pin shaft is parallel to the length direction of the housing, one end of the pin shaft is connected to the end cover, and the other end is connected to the compressor core, and one of the end cover and the compressor core is connected to the pin shaft by an interference fit, and the other is connected by a clearance fit; The shell is an extruded part; the end cover is welded to the shell.

5. The compression module according to claim 4, wherein: The compression module includes a flow channel portion, the flow channel portion is assembled and connected to the shell or is an integral part, the flow channel portion is a plate-shaped structure, the flow channel portion has a flow channel, and the flow channel is connected to the shell cavity; The mounting groove is configured as a circular hole, the limiting groove is configured as a circular hole, a portion of the pin is located in the mounting groove, and another portion of the pin is located in the limiting groove; The welding and fixing of the end cover and the shell include but are not limited to one or more of arc welding, laser welding, electron beam welding, friction welding and ultrasonic welding, and the end cover and the shell are sealed at the weld formed therebetween; The compressor core is a pre-assembled module, and the entire compressor core is assembled and connected to the housing.

6. The compression module according to claim 5, characterized in that: The end cover has a first end surface and a second end surface, and a projection plane is defined, the projection plane being perpendicular to the length direction of the housing, the first end surface and the second end surface having the same projection shape on the projection plane, and the first end surface being closer to the compressor core than the second end surface; The entire compressor core is located in the housing cavity, the boss is in contact with the compressor core, and the second end surface is located outside the housing cavity; The end cover is connected to the shell with a clearance fit; the flow channel portion and the shell are an integral part formed by extrusion.

7. A compression module, characterized in that: It includes a compressor core, a shell, an end cover and a limiting structure, wherein the limiting structure includes a matching protrusion and a groove, the protrusion is located in the groove, one of the protrusion and the groove is located in at least one of the compressor core and the shell, and the other is located in the end cover.

8. The compression module according to claim 7, wherein: The housing has a first end and a second end, the first end and the second end are arranged along the length direction of the housing, and the end cover is located at at least one of the first end and the second end; The protrusion is assembled and connected to the end cover or is an integral piece. The end cover has an end cover peripheral wall. The protrusion extends in a direction perpendicular to the length direction of the shell and protrudes from the end cover peripheral wall.

9. The compression module according to claim 7, wherein: The end cover comprises an end cover body and a boss, wherein the end cover body and the boss are assembled and connected or are an integral part; The compressor core has a slot, and at least part of the boss is located in the slot; Part of the boss contacts the peripheral wall of the slot forming the slot; The housing has a housing cavity and an inner cavity wall. The compressor core is at least partially located in the housing cavity. The groove extends from the inner cavity wall to a side away from the compressor core. The protrusion contacts the inner cavity wall forming the groove.

10. The compression module according to claim 8 or 9, characterized in that: The compression module includes a flow channel portion, and the flow channel portion is assembled and connected to the housing or is an integral part; The housing is an extruded part; the end cap is welded to the housing, and the end cap and the housing are sealed at the weld formed therebetween; The end cover has a first end surface and a second end surface, the first end surface and the second end surface are parallel, the first end surface is perpendicular to the length direction of the housing, and the first end surface is closer to the compressor core than the second end surface; The entire compressor core is located in the housing cavity, the boss contacts the compressor core, the end cover is located at the first end, and the housing has a first housing end surface at the first end; The compressor core is defined as having a first reference plane, the first reference plane is parallel to the first end surface, a distance from the first reference plane to the second end surface is S1, a maximum distance from the first reference plane to the first shell end surface is S2, and S1 ≥ S2; The compressor core is a pre-assembled module, and the entire compressor core is assembled and connected to the housing.

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