Compressor structure

Abstract

The utility model provides a compressor structure which comprises a shell, a compressor body, a compressor body and a connecting piece. The shell is internally provided with a mounting cavity. The motor assembly is arranged in the mounting cavity; the body assembly and the pump body assembly are arranged in the mounting cavity; the pump body assembly comprises a pump body crankshaft, and the pump body crankshaft is connected with a motor rotor of the motor assembly. The connecting structure comprises a first connecting part connected with the shell, a second connecting part connected with the motor assembly and a third connecting part connected with the pump body assembly; according to the compressor structure, the deformation of the flange and the deformation of the stator are relieved, the coaxiality offline rate of the compressor is reduced, the noise and vibration of the compressor are improved, meanwhile, the welding procedures of components are reduced, and therefore the welding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and particularly relates to a compressor structure. Background Art

[0002] In the current compressor assembly method, the following steps are usually adopted:

[0003] 1. The motor stator and the housing are in interference fit. During assembly, the housing is often heated to combine the motor stator and the housing.

[0004] 2. The pump body crankshaft and the motor rotor are in interference fit. During assembly, the rotor is heated and sleeved to combine the crankshaft and the motor rotor.

[0005] 3. The pump body flange and the housing are in clearance fit. During assembly, the pump body flange and the housing are combined by spot welding in three points or six points.

[0006] However, with the above combination method, after the motor stator and the housing are combined, the structure deforms greatly. When the pump body flange and the housing are assembled, the coaxiality of the compressor stator and the rotor cannot be guaranteed, resulting in large noise and vibration during the operation of the compressor, and low production efficiency at the same time.

[0007] Therefore, the prior art needs to be further developed. Content of the Utility Model

[0008] The purpose of the utility model is to overcome the above technical deficiencies and provide a compressor structure to solve the technical problem that the coaxiality of the compressor stator and the rotor cannot meet the requirements during the assembly of the compressor in the related art.

[0009] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0010] A compressor structure is provided, including: a housing with an installation cavity inside; a motor assembly arranged in the installation cavity; a pump body assembly arranged in the installation cavity; the pump body assembly includes a pump body crankshaft, and the pump body crankshaft is connected to the motor rotor of the motor assembly; a connection structure, the connection structure includes a first connection part connected to the housing, a second connection part connected to the motor assembly, and a third connection part connected to the pump body assembly; the first connection part, the second connection part, and the third connection part are integrally formed.

[0011] Further, a connection channel is arranged on the housing, and the connection channel penetrates the housing; the connection structure is connected to the motor assembly and the pump body assembly through the connection channel.

[0012] Furthermore, the connection channel includes: a first through-channel, one end of the first through-channel is communicated with the installation cavity, and the other end of the first through-channel is communicated with the outside of the installation cavity; a second connection part is arranged in the first through-channel; the second connection part passes through the first through-channel and is connected with the motor assembly; a second through-channel, one end of the second through-channel is communicated with the installation cavity, and the other end of the second through-channel is communicated with the outside of the installation cavity; a third connection part is arranged in the second through-channel; the third connection part passes through the second through-channel and is connected with the pump body assembly; wherein, a blocking structure is arranged on the housing, and the blocking structure is used to prevent impurities outside the installation cavity from entering the installation cavity through the first through-channel and the second through-channel.

[0013] Furthermore, the connection channel includes a transition channel, and the transition channel is communicated with the outside of the installation cavity; both the first through-channel and the second through-channel are connected with the transition channel; the blocking structure includes a blocking part for blocking the connection structure from entering the installation cavity, and the blocking part is located on the side of the transition channel close to the installation cavity.

[0014] Furthermore, the transition channel includes two side wall surfaces arranged oppositely, and the two side wall surfaces are connected to each other; along the direction of the transition channel close to the installation cavity, the minimum distance between the two side wall surfaces gradually decreases.

[0015] Furthermore, the connection channel extends in a straight line; and / or, along the extension direction of the connection channel, the first through-channel and the transition channel are arranged alternately in sequence; and / or, along the extension direction of the connection channel, the second through-channel and the transition channel are arranged alternately in sequence.

[0016] Furthermore, the blocking structure includes a support ring, and the support ring is arranged in the installation cavity; the support ring includes a support arm for blocking the connection channel, one end of the support arm is connected with the motor assembly, and the other end of the support arm is connected with the pump body assembly.

[0017] Furthermore, the support ring includes a base, and the base is connected with the pump body assembly; the base is a ring structure, and the support ring is arranged on the base.

[0018] Furthermore, there are multiple connection channels; there are multiple support arms, and the multiple support arms are arranged in one-to-one correspondence with the multiple connection channels.

[0019] Furthermore, the motor assembly includes a motor stator, and the motor stator is in clearance fit with the housing; the second connection part is connected with the motor stator; a motor rotor is arranged in the motor stator; and / or, the pump body assembly includes a pump body flange, and the pump body flange is in clearance fit with the housing; the third connection part is connected with the pump body flange.

[0020] Beneficial effects:

[0021] 1. The compressor structure of the present utility model alleviates flange deformation and stator deformation, and solves the problem of large assembly deformation of the compressor.

[0022] 2. The compressor structure of the present utility model reduces the down rate of the compressor coaxiality, improves the noise and vibration of the compressor, and solves the problems of serious down of coaxiality and poor consistency of noise and vibration at the same time.

[0023] 3. The compressor structure of the present utility model reduces the component welding process, improves the welding efficiency, and solves the problem of low assembly production efficiency of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of the compressor structure of the prior art;

[0025] Figure 2 is a schematic structural diagram of the first embodiment of the compressor structure adopted in the embodiment of the present utility model;

[0026] Figure 3 is a schematic structural diagram of the second embodiment of the compressor structure adopted in the embodiment of the present utility model;

[0027] Figure 4 is Figure 3 a partial enlarged view of part I in

[0028] Figure 5 is a schematic structural diagram of the housing of the compressor structure adopted in the embodiment of the present utility model;

[0029] Figure 6 is Figure 5 a sectional view taken along the A-A direction in

[0030] Figure 7 is Figure 5 a sectional view taken along the B-B direction in

[0031] Figure 8 is Figure 5 a sectional view taken along the C-C direction in

[0032] Figure 9 is a schematic structural diagram of the transition channel of the housing of the compressor structure adopted in the embodiment of the present utility model;

[0033] Figure 10 is Figure 9 a partial enlarged view of part II in

[0034] Figure 11 is a schematic structural diagram of the first embodiment of the support ring of the compressor structure adopted in the embodiment of the present utility model;

[0035] Figure 12 is a schematic structural diagram of the second embodiment of the support ring of the compressor structure adopted in the embodiment of the present utility model;

[0036] Figure 13 It is an assembly schematic diagram of the motor stator, support ring and pump body flange of the compressor structure adopted in the embodiment of the present utility model;

[0037] Figure 14 It is an exploded schematic diagram of the motor stator, support ring and pump body flange of the compressor structure adopted in the embodiment of the present utility model.

[0038] Among them, the above-mentioned drawings include the following reference numerals:

[0039] 1. Housing; 11. Installation cavity; 12. Connection channel; 121. First through channel; 122. Second through channel; 123. Transition channel; 1231. Side wall surface; 2. Motor assembly; 21. Motor stator; 22. Motor rotor; 3. Pump body assembly; 31. Pump body crankshaft; 32. Pump body flange; 4. Connection structure; 41. First connection part; 42. Second connection part; 43. Third connection part; 5. Blocking part; 6. Support ring; 61. Support arm; 62. Base. Detailed implementation manners

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0041] See Figures 1 to 14 , according to the embodiment of the present utility model, a compressor structure is provided, including: a housing 1, with an installation cavity 11 inside the housing 1; a motor assembly 2, arranged in the installation cavity 11; a pump body assembly 3, the pump body assembly 3 is arranged in the installation cavity 11; the pump body assembly 3 includes a pump body crankshaft 31, and the pump body crankshaft 31 is connected to the motor rotor 22 of the motor assembly 2; a connection structure 4, the connection structure 4 includes a first connection part 41 connected to the housing 1, a second connection part 42 connected to the motor assembly 2, and a third connection part 43 connected to the pump body assembly 3; the first connection part 41, the second connection part 42 and the third connection part 43 are integrally formed.

[0042] With the above settings, the compressor structure has a housing 1 as the overall support of the structure. The installation cavity 11 provides an installation space for components such as the internal motor assembly 2 and the pump body assembly 3. The pump body assembly 3 includes a pump body crankshaft 31, and the pump body crankshaft 31 is connected to the motor rotor 22 of the motor assembly 2. The connection structure 4 achieves the overall connection through the second connection part 42. Through this compressor structure and the connection method of the integrated connection part, flange deformation and stator deformation are alleviated, and the problem of large assembly deformation of the compressor is solved.

[0043] In the compressor structure of this embodiment, refer to Figure 5 , a connection channel 12 is provided on the housing 1, and the connection channel 12 penetrates the housing 1; the connection structure 4 is connected to the motor assembly 2 and the pump body assembly 3 through the connection channel 12. In this way, the connection structure 4 can extend from the outside of the housing 1 to the inside of the housing 1, so that the connection structure 4 can be set from the outside, which is convenient for operation.

[0044] In the compressor structure of this embodiment, refer to Figures 1 to 11 , the connection channel 12 includes: a first through channel 121, one end of the first through channel 121 communicates with the inside of the installation cavity 11, and the other end of the first through channel 121 communicates with the outside of the installation cavity 11; the second connection part 42 is arranged in the first through channel 121; the second connection part 42 passes through the first through channel 121 and is connected to the motor assembly 2; a second through channel 122, one end of the second through channel 122 communicates with the inside of the installation cavity 11, and the other end of the second through channel 122 communicates with the outside of the installation cavity 11; the third connection part 43 is arranged in the second through channel 122; the third connection part 43 passes through the second through channel 122 and is connected to the pump body assembly 3; wherein, a blocking structure is provided on the housing 1, and the blocking structure is used to prevent impurities outside the installation cavity 11 from entering the installation cavity 11 through the first through channel 121 and the second through channel 122.

[0045] In specific practice, the connection channel 12 serves as a path for connecting the connection structure 4 with the motor assembly 2 and the pump body assembly 3. Each part of the connection channel 12 communicates with the inside and outside of the installation cavity 11. The second connection part 42 passes through the first through channel 121 and is connected to the motor assembly 2, and the third connection part 43 passes through the second through channel 122 and is connected to the pump body assembly 3. In this way, during welding, integral welding can be continuously completed in one channel to ensure the welding quality.

[0046] Specifically, the connection channel 12 can be used as a welding track. When welding along the first through channel 121 and the second through channel 122, the housing is provided with a blocking structure to prevent welding slag from splashing in.

[0047] In the compressor structure of this embodiment, refer to Figures 5 to 10, the connection channel 12 includes a transition channel 123 which communicates with the outside of the installation cavity 11; the first through-channel 121 and the second through-channel 122 are both connected to the transition channel 123; the blocking structure includes a blocking portion 5 for blocking the connection structure 4 from entering the installation cavity 11, and the blocking portion 5 is located on the side of the transition channel 123 close to the installation cavity 11. Because there are entities inside both the first through-channel 121 and the second through-channel 122 during welding, while most of the inside of the transition channel 123 is a cavity, welding slag can easily enter the cavity through the transition channel 123. Therefore, when the blocking portion 5 is located on the side of the transition channel 123 close to the installation cavity 11, it can specifically block the welding slag from passing through the transition channel 123.

[0048] In the compressor structure of this embodiment, refer to Figures 1 to 11 , the transition channel 123 includes two side wall surfaces 1231 arranged oppositely, and the two side wall surfaces 1231 are connected to each other; along the direction of the transition channel 123 close to the installation cavity 11, the minimum distance between the two side wall surfaces 1231 gradually decreases.

[0049] Specifically, the connection channel 12 extends vertically downward to the first through-channel 121 and the second through-channel to the transition channel 123. The blocking portion 5 is located on the side of the transition channel 123 close to the installation cavity 11, and the minimum distance between the two side wall surfaces 1231 gradually decreases, approximately in an L shape. Through the triangular notch of the weld seam in the L section of the side wall surface 1231, it further prevents the welding slag from entering the installation cavity 11 from the transition channel 123 during welding, thereby reducing the coaxiality down rate of the compressor, improving the noise and vibration of the compressor, and solving the problems of serious coaxiality decline and poor consistency of noise and vibration.

[0050] In the compressor structure of this embodiment, refer to Figures 5 to 10 , the connection channel 12 extends in a straight line; and / or, along the extension direction of the connection channel 12, the first through-channel 121 and the transition channel 123 are alternately arranged in sequence; and / or, along the extension direction of the connection channel 12, the second through-channel 122 and the transition channel 123 are alternately arranged in sequence.

[0051] In specific practice, the positions of the first through-channel 121, the second through-channel 122 and the transition channel 123 are not fixedly set. Vertically, they can be located above or below the transition channel 123 arbitrarily, and the anti-welding slag effect of the above embodiment can also be achieved.

[0052] In the compressor structure of this embodiment, refer to Figures 1 to 9 , the blocking structure includes a support ring 6, and the support ring 6 is arranged in the installation cavity 11; the support ring 6 includes a support arm 61 for blocking the connection channel 12. One end of the support arm 61 is connected to the motor assembly 2, and the other end of the support arm 61 is connected to the pump body assembly 3.

[0053] In the compressor structure of this embodiment, refer to Figures 1 to 3 , the base 62 is connected to the pump body assembly 3; the base 62 is a ring-shaped structure, and the support ring 6 is arranged on the base 62.

[0054] In the compressor structure of this embodiment, refer to Figures 1 to 3 , there are multiple connecting channels 12; there are multiple support arms 61, and the multiple support arms 61 are arranged in one-to-one correspondence with the multiple connecting channels 12.

[0055] In specific practice, the support ring 6 is inside the installation cavity 11, the support arm 61 is welded at the weld seam corresponding to the connecting channel 12 during welding, and the other end of the support arm 61 connects the base 62 and the pump body assembly 3, which not only prevents the welding slag from entering but also connects and supports the motor assembly 2 and the pump body assembly 3.

[0056] In the compressor structure of this embodiment, refer to Figures 1 to 10 , the motor assembly 2 includes a motor stator 21, and the motor stator 21 has a clearance fit with the housing 1; the second connecting portion 42 is connected to the motor stator 21; the motor rotor 22 is arranged inside the motor stator 21; and / or, the pump body assembly 3 includes a pump body flange 32, and the pump body flange 32 has a clearance fit with the housing 1; the third connecting portion 43 is connected to the pump body flange 32.

[0057] Specifically, the motor stator 21 has a clearance fit with the housing 1, the pump body flange 32 has a clearance fit with the housing 1, and the weld between the motor stator 21 and the housing 1 is intermittent. The motor stator 21 and the pump body flange 32 are connected by the support ring 6, thus forming a structure that can be integrally welded for welding and fixing.

[0058] Embodiment 1:

[0059] Integral welding method:

[0060] The motor stator 21 has a clearance fit with the housing 1, the pump body flange 32 has a clearance fit with the housing 1, the motor stator 21, the housing 1, and the pump body flange 32 are seam-welded, and a support ring 6 is added between the motor stator 21 and the pump body flange 32. The support ring 6 mainly serves to support the motor stator 21 and prevent the welding slag from entering the compressor housing 1 during welding.

[0061] Embodiment 2:

[0062] Integral welding method:

[0063] As Figure 1 shown, the motor stator 21, the housing 1, and the pump body flange 32 are seam-welded, and the weld of the housing 1 is multiple-segment welds, as Figures 5 to 8, the motor stator 21, the housing 1, and the pump body flange 32 are integrally welded in one pass through the integral weld of the housing 1. The weld includes a notched transition channel 123 that is not through, which can replace the support ring 6 to block the welding slag from entering. The separate welding process is reduced, and the production efficiency of the equipment is improved. This welding method can effectively reduce the deformation of the motor stator 21, reduce the radial force of the motor, thereby reducing vibration and generated noise, and at the same time reduce the deformation of the pump body flange 32, improving the performance consistency of the compressor.

[0064] Embodiment Three:

[0065] Structure of the support ring 6:

[0066] It consists of a base 62 and multiple support arms 61. The base 62 is in contact with the end face of the pump body flange 32, and the support arms 61 are in contact with the lower end of the motor stator 21. The assembly drawing is as shown in Figure 13 shown, and the exploded view is as shown in Figure 14 , which is in contact with the weld of the housing 1, effectively blocking the welding slag generated during welding from entering the housing 1. There are at least three support arms 61.

[0067] Embodiment Four:

[0068] Structure of the support ring 6. The support arm 61 of the support ring 6 is a straight wall, and its outer shape can also be multiple S-curve arms. Each S-curve arm is closely attached to the housing weld. Its main function is to block the welding slag from passing through the weld and entering the interior of the housing during welding. It can also be a polygonal wall. The thickness of the support arm 61 accounts for 1% - 12% of the inner diameter of the housing 1, and the height is the height in the direction from the pump body flange 32 to the motor stator 21. The value range is such that the height h < 70 mm and the width d > 2 mm.

[0069] Embodiment Five:

[0070] The support ring 6 can also be an integral cylindrical shape or other shapes with contacts (as shown in Figure 12 ).

[0071] It should be noted that the terms "first", "second", etc. in the description, claims, and above-mentioned drawings of this application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order different from those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those clearly listed steps or units, but may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0072] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and will not be repeated here.

[0073] The serial numbers of the above embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0074] In the above embodiments of the present application, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0075] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A compressor structure, characterized in that, Comprising: A housing (1) having an installation cavity (11) therein; A motor assembly (2) disposed within the installation cavity (11); A pump body assembly (3) disposed within the installation cavity (11); the pump body assembly (3) includes a pump body crankshaft (31) which is connected to the motor rotor (22) of the motor assembly (2); A connection structure (4) including a first connection portion (41) connected to the housing (1), a second connection portion (42) connected to the motor assembly (2), and a third connection portion (43) connected to the pump body assembly (3); the first connection portion (41), the second connection portion (42), and the third connection portion (43) are integrally formed.

2. The compressor structure according to claim 1, characterized in that A connection channel (12) is provided on the housing (1), and the connection channel (12) penetrates the housing (1); the connection structure (4) is connected to the motor assembly (2) and the pump body assembly (3) through the connection channel (12).

3. The compressor structure according to claim 2, characterized in that, The connection channel (12) includes: A first through-channel (121) having one end communicating with the interior of the installation cavity (11) and the other end communicating with the exterior of the installation cavity (11); the second connection portion (42) is disposed within the first through-channel (121); the second connection portion (42) passes through the first through-channel (121) to be connected to the motor assembly (2); A second through-channel (122) having one end communicating with the interior of the installation cavity (11) and the other end communicating with the exterior of the installation cavity (11); the third connection portion (43) is disposed within the second through-channel (122); the third connection portion (43) passes through the second through-channel (122) to be connected to the pump body assembly (3); Wherein, a blocking structure is provided on the housing (1), and the blocking structure is used to prevent impurities outside the installation cavity (11) from entering the installation cavity (11) through the first through-channel (121) and the second through-channel (122).

4. The compressor structure according to claim 3, characterized in that, The connection channel (12) includes a transition channel (123) which communicates with the exterior of the installation cavity (11); both the first through-channel (121) and the second through-channel (122) are connected to the transition channel (123); the blocking structure includes a blocking portion (5) for blocking the connection structure (4) from entering the installation cavity (11), and the blocking portion (5) is located on the side of the transition channel (123) close to the installation cavity (11).

5. The compressor structure according to claim 4, characterized in that, The transition channel (123) includes two opposite side wall surfaces (1231), and the two side wall surfaces (1231) are connected to each other; along the direction of the transition channel (123) close to the installation cavity (11), the minimum distance between the two side wall surfaces (1231) gradually decreases.

6. The compressor structure according to claim 4, wherein the connecting channel (12) extends in a straight line; and / or, along the extending direction of the connecting channel (12), the first through-channel (121) and the transition channel (123) are arranged alternately in sequence; and / or, along the extending direction of the connecting channel (12), the second through-channel (122) and the transition channel (123) are arranged alternately in sequence.

7. The compressor structure according to claim 3, wherein The blocking structure includes a support ring (6), and the support ring (6) is arranged in the installation cavity (11); the support ring (6) includes a support arm (61) for blocking the connecting channel (12), one end of the support arm (61) is connected to the motor assembly (2), and the other end of the support arm (61) is connected to the pump body assembly (3).

8. The compressor structure according to claim 7, characterized in that, The support ring (6) includes a base (62), and the base (62) is connected to the pump body assembly (3); the base (62) is a ring structure, and the support ring (6) is arranged on the base (62).

9. The compressor structure according to claim 7, characterized in that, There are a plurality of the connecting channels (12); there are a plurality of the support arms (61), and the plurality of support arms (61) are arranged in one-to-one correspondence with the plurality of connecting channels (12).

10. The compressor structure according to claim 1, wherein the motor assembly (2) includes a motor stator (21), and the motor stator (21) is in clearance fit with the housing (1); the second connecting portion (42) is connected to the motor stator (21); the motor rotor (22) is arranged inside the motor stator (21); and / or, the pump body assembly (3) includes a pump body flange (32), and the pump body flange (32) is in clearance fit with the housing (1); the third connecting portion (43) is connected to the pump body flange (32).

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