Supporting assembly, compressor and refrigeration equipment

Abstract

The utility model discloses a supporting assembly, a compressor and refrigeration equipment, and relates to the technical field of compressors, the supporting assembly comprises a first bearing seat, a supporting piece, a connecting piece and a fastening piece, the first bearing seat is rotatably connected with a crankshaft, the first bearing seat comprises a mounting part, and the mounting part is provided with a first connecting hole; the supporting piece is supported on the mounting part and connected with the shell, the supporting piece is provided with a second connecting hole, and the second connecting hole and the first connecting hole are coaxial and communicated with each other; the connecting piece is connected with the supporting piece, the connecting piece is provided with a third connecting hole, the third connecting hole and the second connecting hole are coaxial and communicated with each other, and the third connecting hole is a threaded hole; the fastener penetrates through the first connecting hole and the second connecting hole and is in threaded connection with the third connecting hole. Through the arrangement of the connecting piece, the effective thread fit length of the fastening piece is increased, the torsion of the fastening piece is effectively improved, the offset of the first bearing seat is greatly reduced, the abrasion of the crankshaft is reduced, and the reliability of the crankshaft and the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a supporting component, a compressor and a refrigeration device. Background Art

[0002] With the high speed and high efficiency of rotary compressors and the use of high-thickness motors in specific environments, it is particularly important to ensure the coaxiality of the stator and rotor of the motor during operation and reduce the deformation of the crankshaft end to ensure the reliability of the rotary compressor. To this end, some rotary compressors achieve the above purpose by installing motor bearings at the end of the motor. However, when conventional sliding bearings are used as motor bearings, the motor bearings are prone to wear and tear on the crankshaft, and the reliability is relatively poor, which affects the overall reliability of the rotary compressor. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a support assembly to reduce the wear of the crankshaft and improve the reliability of the crankshaft and the compressor.

[0004] The utility model also provides a compressor having the supporting assembly.

[0005] The utility model also provides a refrigeration device having the compressor.

[0006] The support assembly according to the first aspect of the present utility model is applied to a compressor, wherein the compressor comprises a housing and a crankshaft arranged in the housing, and the support assembly comprises:

[0007] A first bearing seat, rotatably connected to the crankshaft, the first bearing seat comprising a mounting portion, the mounting portion being provided with a first connecting hole;

[0008] A support member, supported by the mounting portion and connected to the housing, the support member being provided with a second connecting hole, the second connecting hole being coaxial with the first connecting hole and being in communication with each other;

[0009] a connecting member connected to the supporting member, the connecting member being provided with a third connecting hole, the third connecting hole being coaxial with the second connecting hole and being in communication with each other, the third connecting hole being a threaded hole; and

[0010] A fastener is inserted through the first connection hole, the second connection hole, and is screwed to the third connection hole.

[0011] The compressor according to the embodiment of the utility model has at least the following beneficial effects:

[0012] By providing a support member and a first bearing seat, the support member is connected to the compressor housing and supported on the first bearing seat, and the first bearing seat is rotatably connected to the crankshaft, so that the support member and the first bearing seat as a whole can support and position the crankshaft. Also, by providing a connecting member on the support body, the fastener is threaded through the first connecting hole, the second connecting hole and the third connecting hole of the connecting member in sequence, thereby increasing the effective thread matching length of the fastener, which can effectively improve the torque of the fastener, thereby enhancing the connection firmness between the support member and the first bearing seat, and can greatly reduce the radial displacement of the first bearing seat caused by the crankshaft load, thereby reducing the wear of the crankshaft and the first bearing seat, and improving the reliability of the crankshaft rotation and the reliability of the compressor. Moreover, by providing a connecting member, the effective thread matching length of the fastener is increased, and the risk of thread slippage can be reduced during the connection process between the fastener and the support member.

[0013] According to some embodiments of the present invention, the support member includes a support body, the support body includes a first surface and a second surface axially opposite to each other along the first bearing seat, the mounting portion is supported on the first surface, and the connecting member is connected to the second surface.

[0014] According to some embodiments of the present invention, the support member includes a support body, the thickness of the support body along the axial direction of the first bearing seat is t, and the height of the connecting member along the axial direction of the first bearing seat is H, satisfying: 1.2≤H / t≤5.

[0015] According to some embodiments of the present invention, the connecting member is fixed to the supporting member by welding.

[0016] According to some embodiments of the present invention, a first side wall is provided on a side of the connecting member close to the first bearing seat, and the first side wall is perpendicular to a reference plane passing through the axis of the first bearing seat and the axis of the third connecting hole.

[0017] According to some embodiments of the utility model, the support member includes a support body connected to a plurality of connecting arms of the support body, the plurality of connecting arms extend away from the support body and are connected to the shell, and the plurality of connecting arms are evenly distributed along the circumference of the support body.

[0018] According to some embodiments of the utility model, the connecting arm includes a first connecting part and a second connecting part, the first connecting part is connected to the supporting body, the second connecting part is connected to an end of the first connecting part away from the supporting body and extends in a direction away from the first connecting part, and the second connecting part is connected to the shell.

[0019] According to some embodiments of the utility model, the first bearing seat is provided with a first axial hole, the support assembly further comprises a shaft sleeve, the shaft sleeve is provided in the first axial hole, the first bearing seat is rotatably connected to the crankshaft via the shaft sleeve, and a friction-reducing layer is provided on an inner wall of the shaft sleeve.

[0020] A compressor according to an embodiment of the second aspect of the utility model comprises a shell, a crankshaft and a support assembly according to any of the above embodiments, wherein the crankshaft and the support assembly are arranged in the shell, and the support assembly is connected to the shell and supported on one end of the crankshaft.

[0021] The compressor according to the embodiment of the utility model has at least the following beneficial effects: the support assembly of the embodiment of the first aspect is adopted, and the support member and the first bearing seat are provided, the support member is connected to the compressor housing and supported on the first bearing seat, and the first bearing seat is rotatably connected to the crankshaft, so that the support member and the first bearing seat as a whole can realize the support and positioning of the crankshaft. Also, by providing a connecting member on the support body, the fastener is threaded through the first connecting hole, the second connecting hole and the third connecting hole of the connecting member in sequence, and the effective thread matching length of the fastener is increased, which can effectively improve the torque of the fastener, thereby enhancing the connection firmness between the support member and the first bearing seat, and can greatly reduce the radial displacement of the first bearing seat caused by the crankshaft load, thereby reducing the wear of the crankshaft and the first bearing seat, and improving the reliability of the crankshaft rotation and the reliability of the use of the compressor. Moreover, by providing a connecting member, the effective thread matching length of the fastener is increased, and the risk of thread slippage can be reduced during the connection process between the fastener and the support member.

[0022] The refrigeration device according to the embodiment of the third aspect of the utility model comprises the compressor described in the above embodiment.

[0023] According to the refrigeration equipment of the embodiment of the utility model, at least the following beneficial effects are achieved: the compressor of the embodiment of the second aspect is adopted, and the compressor is provided with a support member and a first bearing seat, the support member is connected to the compressor housing and supported on the first bearing seat, and the first bearing seat is rotatably connected to the crankshaft, so that the support member and the first bearing seat as a whole can realize the support and positioning of the crankshaft. Also, by providing a connecting member on the support body, the fastener is screwed through the first connecting hole, the second connecting hole and the third connecting hole of the connecting member in sequence, and the effective thread matching length of the fastener is increased, which can effectively improve the torque of the fastener, thereby enhancing the connection firmness between the support member and the first bearing seat, and can greatly reduce the radial displacement of the first bearing seat caused by the crankshaft load, thereby reducing the wear of the crankshaft and the first bearing seat, and improving the reliability of the crankshaft rotation and the reliability of the use of the compressor. Moreover, by providing a connecting member, the effective thread matching length of the fastener is increased, and the risk of thread slippage can be reduced during the connection process between the fastener and the support member.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 A cross-sectional view of the internal structure of a compressor according to an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the support assembly of an embodiment of the utility model;

[0028] Figure 3 A cross-sectional view of the support assembly and crankshaft assembly of an embodiment of the utility model;

[0029] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0030] Figure 5 A front view of a support member according to an embodiment of the utility model;

[0031] Figure 6 A bottom view of the connection between the support member and the connecting member of the embodiment of the utility model;

[0032] Figure 7 A cross-sectional view of a shaft sleeve along the axial direction of an embodiment of the utility model;

[0033] Figure 8 for Figure 7 A partial enlarged view of point B in the middle.

[0034] Figure Number:

[0035] Compressor 10; Support assembly 100;

[0036] First bearing seat 110; first shaft hole 110a; mounting portion 111; first connecting hole 1111; bearing body 112;

[0037] Support member 120; support body 121; first surface 1211; second surface 1212; first through hole 1213; second connection hole 1214;

[0038] Connecting arm 122; first connecting portion 1221; second connecting portion 1222;

[0039] Connecting member 130; third connecting hole 131; welding point 132; first side wall 133;

[0040] Fastener 140; bushing 150; base layer 151; connecting layer 152; wear-reducing layer 153;

[0041] A second bearing seat 160; a third bearing seat 170;

[0042] Crankshaft 200; eccentric portion 210; motor assembly 300; stator 310; rotor 320;

[0043] Pump body assembly 400 ; first cylinder 410 ; second cylinder 420 ; first roller 430 ; second roller 440 . DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0045] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the description of the present utility model, "a plurality" refers to two or more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0047] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0048] The present application provides a support assembly and a compressor using the support assembly.

[0049] Specifically, the support assembly is used to support the crankshaft in the compressor. The compressor may be a rotary compressor, a scroll compressor, or a vehicle-mounted compressor. The rotary compressor will be described in detail below.

[0050] Please refer to Figure 1 , Figure 1The cross-sectional view of the internal structure of the compressor of the embodiment of the utility model is as follows. The compressor 10 includes a support assembly, a crankshaft 200 , a motor assembly 300 and a pump assembly 400 .

[0051] The motor assembly 300 is connected to the crankshaft 200. Specifically, the motor assembly 300 includes a stator 310 and a rotor 320. Generally speaking, the stator 310 is fixedly connected to the housing of the rotary compressor 10. The stator 310 is annular, and the rotor 320 is arranged in the inner ring of the stator 310, that is, the stator 310 is arranged around the rotor 320, and the crankshaft 200 is penetrated by the rotor 320 and fixedly connected to the rotor 320. The rotor 320 can rotate relative to the stator 310. Under the action of the magnetic field, the rotor 320 can be driven to rotate relative to the stator 310, so that the rotor 320 drives the crankshaft 200 to rotate.

[0052] The pump body assembly 400 is used to move under the drive of the motor assembly 300 and the crankshaft 200 to achieve compression of the refrigerant. Taking the two-cylinder rotary compressor 10 as an example, the pump body assembly 400 includes a first cylinder 410 and a second cylinder 420. The first cylinder 410 is arranged on the upper side of the second cylinder 420, and a partition is arranged between the first cylinder 410 and the second cylinder 420. The first cylinder 410 is provided with a first cavity and a first roller 430 installed in the first cavity. Similarly, the second cylinder 420 is provided with a second cavity and a second roller 440 installed in the second cavity.

[0053] One end of the crankshaft 200 away from the motor assembly 300 may be sequentially penetrated through the first cylinder 410, the partition plate and the second cylinder 420. The crankshaft 200 may be provided with two eccentric portions 210 (not shown), and the eccentric directions of the two eccentric portions 210 are different. For example, the eccentric directions of the two eccentric portions 210 are opposite, and the eccentric direction of the eccentric portion 210 is the direction from the central axis of the crankshaft 200 toward the center of the eccentric portion 210. The two eccentric portions 210 are arranged at intervals up and down and are respectively arranged in the first cavity and the second cavity, so that the first cylinder 410 and the second cylinder 420 are connected to the crankshaft 200 respectively. Specifically, the motor assembly 300 drives the crankshaft 200 to rotate, drives the two eccentric portions 210 to rotate eccentrically, drives the first cylinder 410 and the second cylinder 420 to move, and thus realizes the compression of the refrigerant in the first cavity and the second cavity.

[0054] It can be understood that since one end of the crankshaft 200 connected to the pump body assembly 400 rotates eccentrically, in order to reduce the flexural deformation of the crankshaft 200, while improving the coaxiality of the stator 310 and the rotor 320 and preventing the stator 310 and the rotor 320 from scratching, the crankshaft 200 can be supported and positioned by a support assembly.

[0055] like Figure 1As shown, the support assembly may include a second bearing seat 160 and a third bearing seat 170, wherein the second bearing seat 160 is disposed on the upper side of the first cylinder 410, and the third bearing seat 170 is disposed on the lower side of the second cylinder 420, that is, the first cylinder 410 and the second cylinder 420 are disposed between the second bearing seat 160 and the third bearing seat 170. It can be understood that by providing the second bearing seat 160 and the third bearing seat 170, the end of the crankshaft 200 provided with the eccentric portion 210 is supported and positioned to bear the reaction force of the compressed gas in the first cylinder 410 and the second cylinder 420 during the operation of the rotary compressor 10, thereby improving the working stability of the first cylinder 410 and the second cylinder 420.

[0056] In order to further reduce the flexural deformation of the end of the crankshaft 200, it is also necessary to support and position the other end of the crankshaft 200 (the end away from the pump body assembly 400, that is, the top end of the crankshaft 200).

[0057] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of the support assembly of an embodiment of the utility model. Figure 3 The cross-sectional view of the support assembly and the crankshaft of the embodiment of the utility model is shown. The support assembly 100 includes a first bearing seat 110 and a support member 120. The first bearing seat 110 is rotatably connected to the crankshaft 200, and the first bearing seat 110 is provided with a first shaft hole 110a for the crankshaft 200 to pass through. The first bearing seat 110 is rotatably matched with the crankshaft 200 through the first shaft hole 110a, so as to support and position the top end of the crankshaft 200.

[0058] like Figure 2 As shown, the first bearing seat 110 adopts a sliding bearing, and the first bearing seat 110 includes a bearing body 112 and a mounting portion 111 connected to the bearing body 112. The bearing body 112 is designed to be sleeve-shaped, and the mounting portion 111 is connected to one end of the bearing body 112 along the axial direction of the bearing body 112. The first axial hole 110a passes through the bearing body 112 and the mounting portion 111. The mounting portion 111 may be provided with a connection structure such as a connection hole.

[0059] The support member 120 is supported on the mounting portion 111 and connected to the housing of the compressor 10 to support the first bearing seat 110. The support member 120 includes a support body 121 on which the mounting portion 111 of the first bearing seat 110 is supported.

[0060] The support body 121 includes a first surface 1211 and a second surface 1212 which are axially opposite to each other along the first bearing seat 110, wherein the first surface 1211 is located on the side of the support body 121 which is away from the motor assembly 300, that is, the first surface 1211 is the upper surface, and the second surface 1212 is the lower surface. The support body 121 has a first through hole 1213, which penetrates the first surface 1211 and the second surface 1212 in the axial direction, so that the bearing body 112 of the first bearing seat 110 can pass through, so that the mounting portion 111 abuts against the first surface 1211, and the first through hole 1213 can limit the bearing body 112 in the radial direction of the first bearing seat 110. It can be understood that the aperture of the first through hole 1213 is slightly larger than the outer diameter of the bearing body 112, so that the bearing body 112 can smoothly pass through the first through hole 1213, so as to facilitate the installation of the first bearing seat 110 and the support member 120.

[0061] refer to Figure 2 As shown, the support member 120 further includes a plurality of connecting arms 122 connected to the support body 121, and the plurality of connecting arms 122 extend in a direction away from the support body 121 and are connected to the housing of the compressor 10. Through the connecting action of the connecting arms 122, the support member 120 indirectly connects the first bearing seat 110 to the housing of the compressor 10, and then, the first bearing seat 110 is supported and positioned through the supporting action of the support body 121 and the connecting action of the connecting arms 122, thereby supporting and positioning the top end of the crankshaft 200 through the first bearing seat 110.

[0062] It is understandable that the number of the connecting arms 122 may be two, three, four or more, wherein the drawings of this embodiment only illustrate the example of three connecting arms 122, which is not to be regarded as a limitation of the present application.

[0063] It can be understood that the first bearing seat 110 is indirectly connected to the shell of the compressor 10 through the support member 120. Therefore, there is no need to set a structure on the first bearing seat 110 for connecting to the shell of the compressor 10. For example, there is no need to set the above-mentioned connecting arm structure on the first bearing seat 110, so that the structural shape design of the first bearing seat 110 is relatively simple, which can facilitate the processing and manufacturing of the first bearing seat 110. In some cases, standard bearing parts can even be directly selected as the first bearing seat 110, which can facilitate the production of the compressor 10. Moreover, the first bearing seat 110 is used to rotatably cooperate with the top end of the crankshaft 200. The first bearing seat 110 is supported by providing a support member 120. The first bearing seat 110 does not need to be connected to the housing, and only needs to consider the cooperation with the crankshaft 200. This can reduce the difficulty of assembling the first bearing seat 110 (if the first bearing seat 110 is connected to the crankshaft 200 and the compressor housing at the same time, the assembly accuracy of both must be taken into account, and the assembly difficulty is greater), and it is easier to ensure the assembly accuracy of the first bearing seat 110 (for example, ensuring the coaxiality of the first bearing seat 110 and the crankshaft 200), which is beneficial to the assembly of the compressor 10 and further facilitates the production of the compressor 10.

[0064] The support member 120 is formed by a stamping process. The support member 120 is made by a stamping process, and the contours of the first through hole 1213, the support body 121, and the connecting arm 122 can be directly punched out on the stamping equipment. Some bending structures on the support member 120 can also be directly stamped. There is no need to transfer between the various processes, and all can be achieved on the stamping equipment, which greatly facilitates the overall processing of the support member 120.

[0065] Due to the gap between the outer wall of the bearing body 112 and the inner wall of the first through hole 1213, when the first bearing seat 110 is subjected to the load generated by the rotation of the crankshaft 200, the bearing body 112 is easily displaced within the gap under the action of the force, which can easily cause wear between the first bearing seat 110 and the crankshaft 200 and affect the reliability of the rotation of the crankshaft 200.

[0066] In this regard, please combine Figure 2 And refer to Figure 4 , Figure 4 for Figure 3A partial enlarged view of the area A in the middle. The mounting portion 111 is provided with a first connecting hole 1111, and the supporting body 121 is provided with a second connecting hole 1214, and the second connecting hole 1214 is coaxial with the first connecting hole 1111 and is interconnected. The supporting assembly 100 also includes a fastener 140, and the fastener 140 is provided in the first connecting hole 1111 and the second connecting hole 1214, so as to realize the connection and fixation of the first bearing seat 110 and the supporting member 120. By providing the fastener 140 to connect and fix the first bearing seat 110 and the supporting member 120, the two can be firmly connected to reduce the radial displacement caused by the load of the crankshaft 200 on the first bearing seat 110.

[0067] The fastener 140 may be a pin, a screw, a rivet, etc. It is understandable that when the fastener 140 is a screw, the second connection hole 1214 is a threaded hole.

[0068] For easy assembly, the fastener 140 is a screw, and the support member 120 and the first bearing seat 110 are screwed together by the fastener 140. Since the support member 120 is formed by a stamping process, the overall thickness of the support member 120 (support body 121) is generally thin, and the corresponding depth of the second connection hole 1214 is short, so the effective thread matching length of the fastener 140 and the support member 120 is short, and the torque that the fastener 140 can provide is small.

[0069] To increase the torque of the fastener 140, please continue to refer to Figure 4 The support assembly 100 also includes a connecting member 130, which is connected to the support body 121. The connecting member 130 is provided with a third connecting hole 131, and the third connecting hole 131 is a threaded hole. The third connecting hole 131 is coaxial with the second connecting hole 1214 and is interconnected. The fastener 140 is passed through the first connecting hole 1111 and the second connecting hole 1214 and is threadedly connected to the third connecting hole 131.

[0070] The connecting member 130 may be a nut. For example, the connecting member 130 may be a round nut, a square nut, or a hexagonal nut, which is not limited in the present embodiment.

[0071] like Figure 2 As shown, the connecting member 130 is connected to the second surface 1212 of the support body 121, that is, the connecting member 130 is connected to the side of the support body 121 facing the motor assembly 300, that is, the lower surface of the support body 121. By arranging the connecting member 130 on the second surface 1212, the mounting portion 111 of the first bearing seat 110 can directly contact the first surface 1211 of the support body 121, thereby increasing the contact area between the first bearing seat 110 and the support member 120, thereby enhancing the stability of the connection between the first bearing seat 110 and the support member 120.

[0072] Then, by arranging the connector 130 on the support body 121, the fastener 140 is sequentially passed through the first connection hole 1111, the second connection hole 1214 and screwed with the third connection hole 131 of the connector 130, the effective thread matching length of the fastener 140 is increased, and the torque of the fastener 140 can be effectively improved, thereby enhancing the connection firmness between the support 120 and the first bearing seat 110, and the radial displacement of the first bearing seat 110 caused by the load of the crankshaft 200 can be greatly reduced, thereby reducing the wear of the crankshaft 200 and the first bearing seat 110, improving the reliability of the rotation of the crankshaft 200, and thus improving the reliability of the use of the compressor 10. Moreover, by arranging the connector 130, the effective thread matching length of the fastener 140 is increased, and the risk of thread slippage can be reduced during the connection process between the fastener 140 and the support 120.

[0073] At the same time, since the support member 120 is formed by a stamping process, this embodiment increases the threaded fitting length of the fastener 140 by arranging a connector 130 on the support body 121, rather than directly increasing the overall thickness of the support member 120 to increase the depth of the second connecting hole 1214, so that the support member 120 as a whole can maintain a relatively thin design thickness, so that the support member 120 can be processed and formed by a stamping equipment with a smaller tonnage, which can reduce the processing cost. This embodiment does not increase the threaded fitting length by increasing the local thickness of the support member 120, so that the support body 121 can be designed in a plate shape, making the overall structure of the support member 120 relatively simple, and correspondingly simplifying the design of the stamping die, which is more conducive to the stamping operation of the support member 120 and makes it easier to ensure the processing yield rate of the support member 120.

[0074] Please refer to Figure 5 , Figure 5 It is a front view of the support member of the embodiment of the utility model. The thickness of the support body 121 along the axial direction of the first bearing seat 110 is defined as t, that is, the distance between the first surface 1211 and the second surface 1212 is t, and the height of the connecting member 130 along the axial direction of the first bearing seat 110 is defined as H, that is, the distance between the end surface of the connecting member 130 away from the support body 121 and the second surface 1212 is H, satisfying the following relationship: 1.2≤H / t≤5.

[0075] It is understandable that the larger the height dimension H of the connecting member 130 along the axial direction of the first bearing seat 110, the longer the length of the corresponding fastener 140 threadedly matched therewith will be, and the more space the connecting member 130 and the fastener 140 as a whole occupy on the lower side of the support member 120, and the smaller the gap left between the support member 120 and the motor assembly 300, which reduces the safety distance between the fastener 140 and the winding of the lower motor assembly 300, affecting the safety of the compressor 10. If the height dimension of the connecting member 130 is large, resulting in a reduction in the safety distance between the fastener 140 and the winding, in order to increase the safety distance, the housing of the compressor 10 needs to be raised, and the installation space of the refrigeration equipment using the compressor 10 needs to be increased accordingly, which will bring a series of assembly problems.

[0076] The smaller the height dimension H of the connecting member 130 along the axial direction of the first bearing seat 110, the shorter the length of the third connecting hole 131, which shortens the effective threaded matching length of the fastener 140 and the connecting member 130. The torque generated by the fastener 140 is reduced, and the connection strength between the first bearing seat 110 and the support member 120 is weakened, causing the first bearing seat 110 to be easily offset by the load of the crankshaft 200, affecting the reliability of the rotation of the crankshaft 200.

[0077] Therefore, the height dimension H of the connecting member 130 along the axial direction of the crankshaft 200 should not be too large or too small, and the height of the connecting member 130 and the thickness of the supporting body 121 need to be constrained. The above relationship between the thickness dimension t of the supporting body 121 and the height dimension H of the connecting member 130 is obtained by the applicant of this case through simulation experiments. Within the range of 1.2≤H / t≤5, the height of the supporting member 120 along the axial direction of the crankshaft 200 will not be too large, avoiding occupying too much space on the lower side of the supporting member 120. Without changing the shell size, a sufficient safety distance can be left between the fastener 140 and the winding of the motor assembly 300, thereby improving the safety of the compressor 10. At the same time, the height of the supporting member 120 along the axial direction of the crankshaft 200 will not be too short, which can ensure that a longer thread matching length is provided to the fastener 140, which can increase the torque of the fastener 140, effectively reduce the offset of the first bearing seat 110, reduce the wear of the first bearing seat 110 and the crankshaft 200, and improve the reliability of the rotation of the crankshaft 200.

[0078] In one embodiment, the connecting member 130 is fixed to the supporting member 120 by welding. By welding the connecting member 130 to the supporting body 121, the connecting member 130 and the supporting body 121 are firmly and reliably connected. The connecting member 130 and the supporting body 121 may be welded by laser.

[0079] Specifically, during the assembly process of the support assembly 100 and the crankshaft 200, the connecting member 130 can be pre-welded to the second surface 1212 of the support body 121, and then the first bearing seat 110 and the support member 120 are connected to the crankshaft 200. Since the connecting member 130 and the support member 120 have been pre-connected as one, when fixing the first bearing seat 110 and the support member 120, it is only necessary to pass the fastener 140 through the first connecting hole 1111 and the second connecting hole 1214 and screw it to the connecting member 130, which can facilitate assembly and improve assembly efficiency.

[0080] Please refer to Figure 6 , FIG6 is a bottom view of the connection between the support member and the connector of the embodiment of the utility model. A plurality of welding points 132 are formed at the connection between the connector 130 and the support body 121. The plurality of welding points 132 can be evenly arranged around the outer wall of the connector 130, so that the connector 130 is subjected to uniform welding stress, and the connector 130 is prevented from being offset due to uneven distribution of welding stress on the connector 130, and the coaxiality between the third connection hole 131 and the second connection hole 1214 is prevented from being affected, so as to ensure that the fastener 140 can smoothly enter the third connection hole 131 for screw connection. In addition, the plurality of welding points 132 are arranged around the outer wall of the connector 130, so that each welding point 132 is separated from each other by a certain distance, so that the heat generated by welding can be quickly and evenly dissipated, and the support body 121 is prevented from being thermally expanded and deformed due to excessive local heat in the welding process.

[0081] like Figure 6 As shown, when the connecting member 130 is a square nut, the number of the welding points 132 may be four, and the four welding points 132 are respectively arranged at four diagonal corners of the connecting member 130 .

[0082] Please continue to refer to Figure 6 A first side wall 133 is provided on one side of the connecting member 130 close to the first bearing seat 110 , and the first side wall 133 is perpendicular to a reference plane passing through the axis of the first bearing seat 110 and the axis of the third connecting hole 131 .

[0083] like Figure 6 As shown, when the connecting member 130 is a square nut, the connecting member 130 includes four side walls. By arranging the first side wall 133 close to the first bearing seat 110 perpendicularly to the reference plane passing through the axis of the first bearing seat 110 and the third connecting hole 131, the connecting member 130 can be positioned by welding through the first side wall 133. Specifically, when welding the connecting member 130, it is usually necessary to use a welding tool to assist in supporting the connecting member 130. Through the above-mentioned arrangement, the first side wall 133 can position the welding tool, which is beneficial to the welding operation of the connecting member 130 and the support member 120 and improves the welding efficiency.

[0084] Please refer again Figure 6 , a plurality of connecting arms 122 are evenly distributed along the circumference of the supporting body 121. In one embodiment, the number of the connecting arms 122 is set to three, and the angle between every two adjacent connecting arms 122 is 120°.

[0085] By evenly distributing multiple connecting arms 122 along the circumference of the support body 121, the load and impact of the crankshaft 200 on the support member 120 through the first bearing seat 110 can be evenly transmitted to the multiple connecting arms 122, and then transmitted to the compressor 10 casing through the multiple connecting arms 122, thereby preventing uneven force on the connecting arms 122, causing some connecting arms 122 to be overstressed and causing the connecting arms 122 to deform, thereby avoiding the support body 121 from being offset due to the deformation of the connecting arms 122, preventing the first bearing seat 110 from being offset, and improving the reliability of the rotation of the crankshaft 200.

[0086] Please refer to Figure 2 The connecting arm 122 includes a first connecting portion 1221 and a second connecting portion 1222, wherein the first connecting portion 1221 is connected to the supporting body 121, and the second connecting portion 1222 is connected to an end of the first connecting portion 1221 away from the supporting body 121 and extends in a direction away from the first connecting portion 1221, and the second connecting portion 1222 is connected to the housing. The second connecting portion 1222 may be welded to the inner wall of the housing.

[0087] That is, the second connection part 1222 is bent and connected to the first connection part 1221, and the extension direction of the second connection part 1222 is arranged to cross the extension direction of the first connection part 1221, so that the second connection part 1222 can extend along the inner wall surface of the shell, so that the second connection part 1222 can fit the inner wall of the shell, and the support member 120 can be positioned more conveniently, so as to facilitate the connection and assembly of the support member 120 and the shell, and avoid the support member 120 tilting when connected to the shell and affecting the coaxiality of the assembly of the first bearing seat 110 and the crankshaft 200, thereby reducing the wear of the first bearing seat 110 and the crankshaft 200. Moreover, by bending and connecting the second connection part 1222 and the first connection part 1221, the second connection part 1222 can extend along the inner wall surface of the shell, which increases the connection area between the connecting arm 122 and the inner wall of the shell, and can enhance the firmness of the connection between the support member 120 and the shell.

[0088] At the same time, the second connecting portion 1222 is bent and connected to the first connecting portion 1221, which can enhance the overall strength of the support member 120 itself, prevent the support member 120 from being easily deformed under a small load, and reduce the risk of the first bearing seat 110 being offset due to the deformation of the support member 120, thereby reducing the wear of the first bearing seat 110 and the crankshaft 200 and improving the reliability of the rotation of the crankshaft 200.

[0089] Please refer to Figure 3 and Figure 4 The support assembly 100 further includes a sleeve 150 , which is disposed in the first shaft hole 110 a , through which the crankshaft 200 passes, and through which the first bearing seat 110 is rotatably connected to the crankshaft 200 .

[0090] Then, by setting a sleeve 150 in the first bearing and passing the crankshaft 200 through the sleeve 150, that is, the sleeve 150 is set between the outer peripheral wall of the crankshaft 200 and the inner wall of the first shaft hole 110a, so that the outer peripheral wall of the crankshaft 200 will never contact the first bearing seat 110, thereby preventing the first bearing seat 110 from wearing.

[0091] Please refer to Figure 7 and Figure 8 , Figure 7 This is a cross-sectional view of the shaft sleeve of an embodiment of the utility model along the axial direction. Figure 8 for Figure 7 A partial enlarged view of the B in the figure. In order to reduce the wear of the sleeve 150 itself, a friction-reducing layer 153 is provided on the inner wall of the sleeve 150. The friction-reducing layer 153 can be made of a polymer resin material or a graphite material, which can reduce the friction between the inner wall of the sleeve 150 and the outer peripheral wall of the crankshaft 200, increase the lubricity between the two, increase the service life of the sleeve 150, reduce the wear of the sleeve 150 and the crankshaft 200, and further increase the reliability of the rotation of the crankshaft 200.

[0092] In one embodiment, the friction reducing layer 153 may be made of PTFE (Polytetrafluoroethylene) or graphite.

[0093] Specifically, the sleeve 150 can be manufactured by a rolling process. Before rolling, the substrate used to make the sleeve 150 is in a flat plate shape, and a wear-reducing layer 153 can be formed on one surface of the flat plate substrate. For example, the wear-reducing layer 153 can be formed on one surface of the substrate by spraying. After the wear-reducing layer 153 is fully formed, the flat plate substrate is rolled to obtain the final shape of the sleeve 150. This facilitates the processing and forming of the wear-reducing layer 153, and a wear-reducing layer 153 with uniform thickness can be obtained. At the same time, it is convenient to control the overall processing accuracy of the sleeve 150.

[0094] like Figure 8 As shown, the sleeve 150 may include a base layer 151 and a connection layer 152 stacked radially along the sleeve 150 , the connection layer 152 is disposed on the inner side of the base layer 151 , and the friction reducing layer 153 is disposed on a side of the connection layer 152 away from the base layer 151 .

[0095] The base layer 151 can be made of a rigid material such as a metal material, so that the sleeve 150 has good rigidity, can enable the sleeve 150 to maintain its own shape, and ensure that the sleeve 150 can be stably installed in the first shaft hole 110a of the first bearing seat 110. For example, the base layer 151 can be made of copper metal.

[0096] Since the base layer 151 is relatively smooth and has poor adhesion, the connection layer 152 is provided, and the connection layer 152 is used for connection, so that the friction-reducing layer 153 and the base layer 151 can be connected as a whole. Among them, the surface of the connection layer 152 is an uneven structure, so that the friction-reducing layer 153 can be embedded in the groove of the connection layer 152, which can enhance the connection adhesion of the friction-reducing layer 153, thereby ensuring that the friction-reducing layer 153 is firmly connected to the connection layer 152. It can be understood that the connection layer 152 can be provided with multiple layers.

[0097] The present application also provides a refrigeration device, which includes a compressor 10 conceived based on any of the above embodiments. The refrigeration device may be an electrical appliance such as a refrigerator or an air conditioner.

[0098] Since the refrigeration device adopts all the technical solutions of the compressor 10 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment.

[0099] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A support assembly, characterized in that: Applied to a compressor, the compressor comprises a housing and a crankshaft arranged in the housing, and the support assembly comprises: A first bearing seat, rotatably connected to the crankshaft, the first bearing seat comprising a mounting portion, the mounting portion being provided with a first connecting hole; A support member, supported by the mounting portion and connected to the housing, the support member being provided with a second connecting hole, the second connecting hole being coaxial with the first connecting hole and being in communication with each other; a connecting member connected to the supporting member, the connecting member being provided with a third connecting hole, the third connecting hole being coaxial with the second connecting hole and being in communication with each other, the third connecting hole being a threaded hole; and A fastener is inserted through the first connection hole, the second connection hole, and is screwed to the third connection hole.

2. The support assembly according to claim 1, characterized in that: The support member includes a support body, and the support body includes a first surface and a second surface that are axially opposite to each other along the first bearing seat. The mounting portion is supported on the first surface, and the connecting member is connected to the second surface.

3. The support assembly according to claim 1, characterized in that: The support member includes a support body, the thickness of the support body along the axial direction of the first bearing seat is t, and the height of the connecting member along the axial direction of the first bearing seat is H, satisfying: 1.2≤H / t≤5.

4. The support assembly according to any one of claims 1 to 3, characterized in that: The connecting member is fixed to the supporting member by welding.

5. The support assembly according to any one of claims 1 to 3, characterized in that: A first side wall is disposed on a side of the connecting member close to the first bearing seat, and the first side wall is perpendicular to a reference plane passing through the axis of the first bearing seat and the axis of the third connecting hole.

6. The support assembly according to any one of claims 1 to 3, characterized in that: The support member includes a support body and a plurality of connecting arms connected to the support body, the plurality of connecting arms extend in a direction away from the support body and are connected to the shell, and the plurality of connecting arms are evenly distributed along the circumference of the support body.

7. The support assembly according to claim 6, characterized in that: The connecting arm includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the supporting body, the second connecting portion is connected to an end of the first connecting portion away from the supporting body and extends in a direction away from the first connecting portion, and the second connecting portion is connected to the shell.

8. The support assembly according to any one of claims 1 to 3, characterized in that: The first bearing seat is provided with a first axial hole, and the support assembly further comprises a shaft sleeve, the shaft sleeve is provided in the first axial hole, the first bearing seat is rotatably connected to the crankshaft via the shaft sleeve, and a friction-reducing layer is provided on an inner wall of the shaft sleeve.

9. A compressor, characterized in that It comprises a shell, a crankshaft and a support assembly according to any one of claims 1 to 8, wherein the crankshaft and the support assembly are arranged in the shell, and the support assembly is connected to the shell and supported on one end of the crankshaft.

10. Refrigeration equipment, characterized in that Comprising the compressor as claimed in claim 9.

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