Compressor, compressor shell and compressor shell
By designing a structure in which the protruding parts and external members of the compressor housing partially overlap on the peripheral surface, the problem of difficulty in lightweight design of the compressor housing is solved, and the effect of reasonable compression material use and reducing production costs is achieved.
Patent Information
- Application Number
- CN202421527738.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The existing compressor housing is difficult to design lightweight, mainly because the size and shape of the housing are limited by the internal functional components, resulting in extremely limited room for improvement in the housing.
A compressor housing is designed, including a housing body, a projection and an external member. The convex portion protrudes inwardly relative to the inner wall of the casing body, for installing compressor components; the external member protrudes outwardly relative to the outer wall of the casing body, for connecting the external environment. The protrusions and the external members are at least partially overlapped on the peripheral surface of the housing body and are connected by a common solid housing wall.
Through this design, the material use of the compressor case can be reasonably reduced without changing the shape and size of the case, and the total weight of the product can be met while meeting the needs of parts installation and external environment connection.
Smart Images
Figure CN222863578U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of compressors, and in particular to a compressor casing. It also relates to a compressor casing, including the above compressor casing. It also relates to a compressor, including the above compressor casing. Background Art
[0002] The compressor is one of the important structures of products such as air conditioners, refrigerators and dehumidifiers.
[0003] In order to meet the requirements of lightweight and miniaturized development of products such as air conditioners, refrigerators and dehumidifiers, lightweight and miniaturized design of compressors has become a task that cannot be ignored.
[0004] The compressor includes a housing and various functional components arranged in the housing. The functional components of different compressors are different. Taking piston compressors as an example, the functional components of piston compressors mainly include motors, spindles, piston pumps or plunger pumps, etc. At present, the lightweight design of compressors mainly starts from the various functional components in the housing, and the housing of the compressor is rarely modified. This is mainly because the size and general shape of the housing are greatly restricted by the functional components inside it, and it is difficult to change the size and general shape of the housing at will, so the room for improvement of the housing is extremely limited.
[0005] In summary, how to design a lightweight compressor housing has become an urgent problem to be solved by those skilled in the art. Utility Model Content
[0006] The purpose of the present application is to provide a compressor casing, which can reasonably reduce the material consumption of the compressor casing body while maintaining the shape and size roughly unchanged, so as to effectively control the production cost and total weight of the compressor casing. Another purpose of the present application is to provide a compressor casing, including the aforementioned compressor casing. Another purpose of the present application is to provide a compressor, including the aforementioned compressor casing.
[0007] To achieve the above-mentioned purpose, the present application provides a compressor casing, including a casing body, a protrusion and an external component; the protrusion protrudes radially inward relative to the inner wall of the casing body, and can be installed for a component assembly composed of several compressor parts; the external component protrudes outward relative to the outer wall of the casing body, and is used to connect to the external environment of the casing body; the protrusion and the external component at least partially overlap on the circumferential surface of the casing body, and are connected by a common solid casing wall.
[0008] In some embodiments, the external member includes a seat with holes and / or a seat with grooves that enables the housing body to be installed in an external environment;
[0009] The hole seat has a hole cavity and a solid hole wall arranged on the peripheral side of the hole cavity, the hole cavity and the convex part are staggered on the peripheral surface of the casing body, and part of the solid hole wall and the convex part overlap each other on the peripheral surface of the casing body;
[0010] The grooved seat comprises a groove cavity and a solid groove wall arranged on the peripheral side of the groove cavity. The groove cavity and the convex part are staggered on the peripheral surface of the casing body, and part of the solid groove wall and the convex part overlap each other on the peripheral surface of the casing body.
[0011] In some embodiments, the external component includes a ventilation interface that enables gas to be exchanged between the casing body and the external environment; a through air duct and an air duct wall arranged on the peripheral side of the through air duct are provided in the ventilation interface, the through air duct and the protrusion are staggered on the peripheral surface of the casing body, and part of the air duct wall and the protrusion overlap with each other on the peripheral surface of the casing body.
[0012] In some embodiments, the protrusion is an annular protrusion; the annular protrusion extends in a ring shape along the circumference of the casing body.
[0013] In some embodiments, the protrusion includes a plurality of protrusions arranged along the circumference of the housing body.
[0014] In some embodiments, the external component includes a first external component and a second external component; the first external component and the protrusion are completely offset on the circumference of the casing body; the second external component and the protrusion partially overlap on the circumference of the casing body and are connected by a common solid cylinder wall.
[0015] In some embodiments, the housing body is in a sleeve shape; and two or more second external components are respectively disposed on both sides of the protrusion along the axial direction of the housing body.
[0016] In some embodiments, the protrusions are discontinuously distributed along the circumference of the casing body; and two or more second external components are respectively disposed on both sides of the same protrusion along the circumference of the casing body.
[0017] The present application also provides a compressor housing, comprising an end shell and the above-mentioned compressor housing; the end shell and the compressor housing are assembled into a shell-type component.
[0018] The present application also provides a compressor, comprising the above-mentioned compressor housing.
[0019] Compared with the prior art, this application has at least the following beneficial effects:
[0020] The compressor casing provided in the present application includes a casing body, a protrusion and an external component; the protrusion protrudes radially inward relative to the inner wall of the casing body, and can be installed for a component assembly composed of a number of compressor parts; the external component protrudes outward relative to the outer wall of the casing body, and is used to connect the casing body to the external environment; the protrusion and the external component at least partially overlap on the circumferential surface of the casing body, and are connected by a common solid casing wall.
[0021] In the compressor casing provided in the present application, a convex portion is provided inside the casing body, and the convex portion can meet the installation requirements of the component assembly inside the compressor, and an external component is provided outside the casing body, and the external component can meet the connection requirements of the casing body and its external environment. The convex portion and the external component at least partially overlap on the circumference of the casing body and are connected by a common solid casing wall. This layout method can not only make the convex portion and the external component meet their respective operating requirements and structural performance requirements, but also make the convex portion and the external component able to compensate for each other's structural strength, thereby rationalizing the material consumption of the compressor casing body, and further effectively controlling the production cost and total weight of the compressor casing. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0023] Figure 1 A schematic diagram of the structure of a compressor casing provided in an embodiment of the present application;
[0024] Figure 2 for Figure 1 Left view of .
[0025] in,
[0026] 1-Casing body, 2-Protruding part,
[0027] 3-external component, 31-perforated seat, 311-hole cavity, 312-solid hole wall, 32-ventilation interface, 321-through airway, 322-airway wall. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0029] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0030] Please refer to Figure 1 and Figure 2 , Figure 1A schematic diagram of the structure of a compressor casing provided in an embodiment of the present application; Figure 2 for Figure 1 Left view of .
[0031] For reference Figure 1 The present application provides a compressor casing, including a casing body 1; a convex portion 2 is provided inside the casing body 1, and the convex portion 2 radially protrudes inward relative to the inner wall of the casing body 1, and can be used as a mechanical installation basis for installing other components inside the casing body 1; an external component 3 is provided outside the casing body 1, and the external component 3 protrudes outward relative to the outer wall of the casing body 1, and can be connected to the external environment of the casing body 1; in this embodiment, the convex portion 2 and the external component 3 at least partially overlap on the circumferential surface of the casing body 1, and are connected by a common solid casing wall.
[0032] The protrusion 2 is disposed in the housing body 1 and protrudes radially inward relative to the inner wall of the housing body 1. Figure 1 , Figure 1 The middle casing body 1 is in the shape of a sleeve. Figure 1 The horizontal direction can be regarded as the axial direction of the housing body 1. Accordingly, the radial direction of the housing body 1 is perpendicular to Figure 1 The horizontal direction of the convex part 2 is perpendicular to Figure 1 The horizontal direction of the housing body 1 is protruding toward the radial midpoint of the direction. Generally, the protrusion 2 can extend along the circumference of the housing body 1, including continuous extension and discontinuous extension along the circumference of the housing body 1; wherein, if the protrusion 2 extends continuously along the circumference of the housing body 1, the protrusion 2 is equivalent to an annular protrusion, and if the protrusion 2 extends discontinuously along the circumference of the housing body 1, the protrusion 2 is equivalent to a plurality of protrusions dispersedly arranged in the housing body 1.
[0033] The convex portion 2 can be used as a mechanical installation base for installing other components in the casing body 1; wherein the other components can refer to a component assembly composed of several compressor components, that is, the convex portion 2 can be used to install the component assembly composed of several compressor components. Figure 1 The main bearing, motor, pump body and other parts of the compressor can be assembled with the main shaft of the compressor to form a main shaft assembly. The convex portion 2 can be used for installing the above-mentioned main shaft assembly so that the main shaft assembly is located at a specific position in the casing body 1.
[0034] The external component 3 is disposed outside the housing body 1 and protrudes outward relative to the outer wall of the housing body 1. Figure 1 , Figure 1 The casing body 1 is sleeve-shaped, and the external component 3 is arranged on the outer periphery of the casing body 1. For example, the external component 3 can be arranged on Figure 1 The outer wall of the casing body 1 above, and the aforementioned external component 3 protrudes upward; the external component 3 can also be set at Figure 1The outer wall of the casing body 1 below, and the aforementioned external member 3 protrudes downward; of course, the external member 3 can also be set Figure 1 The outer wall of the housing body 1 in front of the housing body 1 is protruded forward, or is arranged at Figure 1 The outer wall of the housing body 1 at the rear thereof is convex rearward. One or more external components 3 may be arranged on the housing body 1. The multiple external components 3 arranged on the housing body 1 may be external components 3 of the same type or external components 3 of different types.
[0035] The above-mentioned external component 3 can be connected to the external environment of the casing body 1. The connection of the external component 3 to the casing body 1 and its external environment can refer to a mechanical connection, or it can refer to a spatial connection that can realize material exchange. For example, the external component 3 can fix the casing body 1 at a specific position in the space where the casing body 1 is located. In this case, the connection of the external component 3 to the casing body 1 and its external environment refers to a mechanical connection, and the external component 3 is equivalent to a mounting seat. For another example, the external component 3 can connect the cavity in the casing body 1 and the external environment of the casing body 1. In this case, the connection of the external component 3 to the casing body 1 and its external environment refers to a spatial connection that can realize material exchange, and the external component 3 is equivalent to a channel. For the latter example, the external environment of the casing body 1 can refer to the outside world, or it can refer to the cavity of other devices that can be connected to the cavity of the casing body 1.
[0036] In this embodiment, the protrusion 2 is arranged on the circumferential inner wall of the casing body 1, and the external member 3 is arranged on the circumferential outer wall of the casing body 1; the aforementioned protrusion 2 and the aforementioned external member 3 overlap at least partially on the circumferential surface of the casing body 1, and are connected to each other by a common solid casing wall. According to the above, one or more protrusions 2 can be arranged on the casing body 1, and one or more external members 3 can also be arranged. Therefore, the protrusion 2 and the external member 3 overlap at least partially on the circumferential surface of the casing body 1, including at least part of the protrusion 2 and at least part of the external member 3 overlapping each other, and also including the overlapping protrusion 2 and the external member 3 in which at least part of the structure of the protrusion 2 overlaps at least part of the structure of the external member 3. In addition, the circumferential surface of the casing body 1 should be understood as the planar area where the circumferential wall of the casing body 1 is located. At this time, the thickness of the circumferential wall is negligible, and the protrusion 2 and the external member 3 overlap each other in the aforementioned planar area and are connected by a common solid casing wall.
[0037] Based on the molding method of the protrusion 2 and the external component 3 on the casing body 1, the casing wall at the position of the protrusion 2 and the external component 3 in the casing body 1 is significantly thicker than the casing wall at other positions of the casing body 1, which can meet the operation requirements and structural performance requirements of both the protrusion 2 and the external component 3. At the same time, the protrusion 2 and the external component 3 are also connected by a common solid casing wall. The external component 3 can be used to increase the structural strength of the casing wall at the position of the protrusion 2 without increasing the material of the casing body 1. Similarly, the protrusion 2 can also be used to increase the structural strength of the casing wall at the position of the external component 3. From another perspective, since the protrusion 2 and the external component 3 can increase each other's structural strength, there is no need to increase the amount of material used in the casing body 1 at the position where the protrusion 2 is located in order to increase the structural strength of the protrusion 2 alone, nor is there any need to increase the amount of material used in the casing body 1 at the position where the external component 3 is located in order to increase the structural strength of the external component 3 alone. This is conducive to reasonably reducing the material usage of the compressor casing body 1, reducing the weight of the casing body 1, and effectively controlling the production cost of the compressor casing and controlling the total weight of the compressor product.
[0038] In summary, the compressor casing provided in the present application is provided with a protrusion 2 and an external component 3 on the casing body 1, and the protrusion 2 is used to meet the installation requirements of the component assembly in the compressor, and the external component 3 is used to connect the casing body 1 and its external environment. At the same time, the protrusion 2 and the external component 3 are reasonably arranged so that the protrusion 2 and the external component 3 can compensate for each other's structural strength, thereby reasonably reducing the material consumption of the compressor casing body 1 and effectively controlling the production cost and total weight of the compressor casing.
[0039] The compressor casing provided in the present application is further described below in conjunction with the accompanying drawings and implementation examples.
[0040] In some embodiments, an external component 3 is provided outside the casing body 1, and the external component 3 may include at least one of a seat with a hole 31 and a seat with a groove; the casing body 1 can be installed in the external environment through the seat with a hole 31 and the seat with a groove. For example, the casing body 1 can be fixed to a specific position of the external environment through the seat with a hole 31 and the seat with a groove.
[0041] The perforated seat 31 includes a hole cavity 311, and one end of a connecting piece such as a bolt or a hook can be inserted into the aforementioned hole cavity 311, and the other end of the connecting piece such as the bolt or the hook is arranged in the external environment where the casing body 1 is located. That is to say, the casing body 1 is installed in the external environment where the casing body 1 is located through connecting pieces such as bolts or hooks.
[0042] For reference Figure 1In addition to the hole 311, the seat with holes 31 also includes a solid hole wall 312 arranged on the peripheral side of the hole 311; in order to make the protrusion 2 and the seat with holes 31 compensate for each other's structural strength, usually, the hole 311 and the protrusion 2 are staggered on the peripheral surface of the housing body 1, and part of the solid hole wall 312 and the protrusion 2 overlap on the peripheral surface of the housing body 1. If the shape and size of the hole 311 have a relatively small negative impact on the structural strength of the solid hole wall 312 around it, the entire solid hole wall 312 and the protrusion 2 can also overlap on the peripheral surface of the housing body 1. Obviously, in this case, the hole 311 also overlaps with the protrusion 2 on the peripheral surface of the housing body 1.
[0043] Usually, if Figure 2 As shown, two perforated seats 31 are used in pairs. For example, a connecting shaft can be inserted between a pair of perforated seats 31 in sequence, and then the connecting shaft is fixed at a specific position in the venue.
[0044] Similar to the above-mentioned seat with holes 31, the seat with grooves has a groove cavity and a solid groove wall arranged on the circumferential side of the groove cavity; the groove cavity and the protrusion 2 are staggered on the circumferential surface of the casing body 1, and part of the solid groove wall and the protrusion 2 overlap each other on the circumferential surface of the casing body 1. Similarly, if the shape and size of the groove cavity have a relatively small negative impact on the structural strength of the solid groove wall around it, the entire solid groove wall and the protrusion 2 can also overlap each other on the circumferential surface of the casing body 1. Obviously, at this time, the groove cavity also overlaps with the protrusion 2 on the circumferential surface of the casing body 1. Usually, the seat with grooves can be installed in the external environment where the casing body 1 is located through connectors such as sliders and guide bars. For example, one end of the slider is slidably installed and locked in the groove cavity, and the other end of the slider is arranged in the external environment where the casing body 1 is located.
[0045] In some embodiments, the housing body 1 is provided with an external component 3, and the external component 3 may include a ventilation interface 32; the space inside the housing body 1 is connected to the external environment of the housing body 1 through the ventilation interface 32, so the housing body 1 and the external environment can achieve gas exchange through the ventilation interface 32. Figure 1 The ventilation interface 32 can be specifically set as an air intake interface and / or an air exhaust interface; the aforementioned air intake interface is usually connected to the low-pressure chamber in the casing body 1, and this low-pressure chamber can also be regarded as a motor installation chamber; the aforementioned exhaust interface is usually connected to the high-pressure chamber in the casing body 1, and this high-pressure chamber can also be regarded as a pump body installation chamber.
[0046] In the above embodiment, both the air intake interface and the air exhaust interface may include a through air passage 321 and an air passage wall 322 arranged on the peripheral side of the through air passage 321; wherein the through air passage 321 and the convex portion 2 are staggered on the peripheral surface of the housing body 1, and part of the air passage wall 322 and the convex portion 2 overlap each other on the peripheral surface of the housing body 1. Figure 1 , Figure 1An air intake interface is provided below the middle casing body 1, and the right part of the airway wall 322 of the air intake interface overlaps with the corresponding convex part 2 on the circumference of the casing body 1, and the airway of the air intake interface overlaps with the corresponding convex part 2 along the circumference of the casing body 1. Figure 1 The left and right directions are staggered.
[0047] Typically, one or more external components 3 may be provided on the casing body 1; when the casing body 1 is provided with a plurality of external components 3, these external components 3 may be the same type of external components 3, for example, all are perforated seats 31, and these external components 3 may be different types of external components 3, for example, a casing body 1 is provided with a perforated seat 31, an air intake interface and an exhaust interface, and the number of the perforated seat 31, the air intake interface and the exhaust interface is not limited to one.
[0048] In each embodiment provided above, the protrusion 2 can be set as an annular protrusion 2, and the annular protrusion 2 extends in an annular shape along the circumference of the housing body 1. In this embodiment, the annular protrusion 2 is arranged in the housing body 1 and is located in the axial middle part of the housing body 1, such as Figure 1 As shown, the annular protrusion 2 is arranged in the middle of the casing body 1 along the horizontal direction, and the cavity in the casing body 1 is divided into two left and right cavities by the annular protrusion 2 as a boundary, and these two cavities can be respectively used as the high-pressure cavity and the low-pressure cavity mentioned above. Usually, the motor of the compressor can be installed in the low-pressure cavity, the pump body of the compressor can be installed in the high-pressure cavity, and the main shaft, main bearing and other parts of the compressor are configured into the component assembly mentioned above, and the main bearing is installed in the casing body 1 through the annular protrusion 2, so that the component assembly is installed in the casing body 1 through the annular protrusion 2.
[0049] The annular protrusion 2 may be arranged to overlap with one or more external components 3. For example, multiple external components 3 are dispersed along the circumference of the annular protrusion 2. Each external component 3 partially overlaps with the annular protrusion 2 on the circumference of the casing body 1 and is connected by a common solid casing wall.
[0050] In the embodiments provided above, the convex portion 2 can also be configured as a plurality of dispersed protrusions, which are arranged along the circumference of the casing body 1, and the component assembly composed of a number of compressor components can be installed on the casing body 1 through these protrusions. For example, the casing body 1 is sleeve-shaped, and more than six protrusions are arranged in the casing body 1, which are arranged in a circle around the central axis of the casing body 1 and are all arranged on the axial normal plane passing through the axial midpoint of the casing body 1. When the component assembly refers to a shaft assembly composed of the main shaft, main bearing and other components of the compressor, the main bearing can be embedded and fixed in the aforementioned protrusions, or overlapped and locked with the aforementioned protrusions.
[0051] In some embodiments, the casing body 1 is provided with a plurality of external components 3, and these external components 3 include a first external component and a second external component; the aforementioned first external component and the protrusion 2 are completely offset on the circumference of the casing body 1, or in other words, the aforementioned first external component and the protrusion 2 are mutually offset on the circumference of the casing body 1, and there is no overlapping area; the aforementioned second external component and the protrusion 2 at least partially overlap on the circumference of the casing body 1 and are connected by a common solid cylinder wall, for example, the second external component and the protrusion 2 are partially offset on the circumference of the casing body 1, at this time, the second external component and the protrusion 2 are partially overlapped and partially offset on the circumference of the casing body 1. It can be seen that in this embodiment, the first external component and the protrusion 2 are relatively independent, and the second external component and the protrusion 2 can compensate for each other's structural strength.
[0052] The second external component and the protrusion 2 are distributed in an overlapping manner. Generally, the protrusion 2 may be distributed in an overlapping manner with two or more second external components. For example, the housing body 1 may be sleeve-shaped, and the two or more second external components may be respectively disposed on both sides of the protrusion 2 along the axial direction of the housing body 1. In addition, if the protrusion 2 is distributed discontinuously along the circumference of the housing body 1, the two or more second external components may be respectively disposed on both sides of the same protrusion 2 along the circumference of the housing body 1.
[0053] The present application also provides a compressor housing, including an end shell and also the compressor housing provided in the above embodiments; in the compressor housing, the end shell and the compressor housing are assembled into a shell-type component for installing components such as a main shaft, a motor, and a pump body. In other words, the end shell and the compressor housing can surround other components of the compressor such as a main shaft, a motor, and a pump body.
[0054] In addition, the present application also provides a compressor, including the above compressor housing. Figure 1 The compressor also includes components such as a main shaft, a motor, and a pump body. The specific types and installation relationships of the components in the compressor housing can also refer to the relevant designs of compressor products in the prior art, which will not be described in detail in this article.
[0055] The compressor, compressor housing and compressor casing provided by the present application are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.
Claims
1. A compressor casing, characterized in that: The invention comprises a casing body (1), a protrusion (2) and an external component (3); the protrusion (2) protrudes radially inward relative to the inner wall of the casing body (1) and is provided for installation; the external component (3) protrudes outward relative to the outer wall of the casing body (1) and is used to connect the casing body (1) to the external environment; the protrusion (2) and the external component (3) at least partially overlap on the circumference of the casing body (1) and are connected by a common solid casing wall.
2. The compressor casing according to claim 1, characterized in that The external component (3) comprises a seat with a hole (31) and / or a seat with a groove, which enables the housing body (1) to be installed in an external environment; The hole seat (31) comprises a hole cavity (311) and a solid hole wall (312) arranged on the peripheral side of the hole cavity (311); the hole cavity (311) and the convex portion (2) are staggered on the peripheral surface of the housing body (1); and parts of the solid hole wall (312) and the convex portion (2) overlap each other on the peripheral surface of the housing body (1); The grooved seat comprises a groove cavity and a solid groove wall arranged on the peripheral side of the groove cavity, the groove cavity and the convex portion (2) are staggered on the peripheral surface of the housing body (1), and a portion of the solid groove wall and the convex portion (2) overlap on the peripheral surface of the housing body (1).
3. The compressor casing according to claim 1, characterized in that The external component (3) comprises a ventilation interface (32) capable of enabling gas to be exchanged between the housing body (1) and the external environment; the ventilation interface (32) is provided with a through air channel (321) and an air channel wall (322) provided on the peripheral side of the through air channel (321); the through air channel (321) and the convex portion (2) are staggered on the peripheral surface of the housing body (1); and a portion of the air channel wall (322) and the convex portion (2) overlap on the peripheral surface of the housing body (1).
4. The compressor casing according to claim 1, characterized in that The convex portion (2) is an annular convex portion; the annular convex portion extends in a ring shape along the circumference of the housing body (1).
5. The compressor casing according to claim 1, characterized in that The convex portion (2) comprises a plurality of convex blocks arranged along the circumference of the housing body (1).
6. The compressor casing according to any one of claims 1 to 5, characterized in that: The external component (3) comprises a first external component and a second external component; the first external component and the protrusion (2) are completely offset on the circumference of the casing body (1); the second external component and the protrusion (2) partially overlap on the circumference of the casing body (1) and are connected by a common solid cylinder wall.
7. The compressor casing according to claim 6, characterized in that The casing body (1) is in the shape of a sleeve; and the two or more second external components are respectively arranged on both sides of the convex portion (2) along the axial direction of the casing body (1).
8. The compressor casing according to claim 6, characterized in that The convex portion (2) is distributed discontinuously along the circumference of the casing body (1); and two or more of the second external components are respectively arranged on both sides of the same convex portion (2) along the circumference of the casing body (1).
9. A compressor housing, characterized in that: It comprises an end shell and a compressor casing as claimed in any one of claims 1 to 8; the end shell and the compressor casing are assembled into a shell-type component.
10. A compressor, characterized in that: Comprising the compressor housing of claim 9.