Scroll compressor with flexible supporting structure

Abstract

The scroll compressor with the flexible supporting structure comprises a shell, a compression mechanism and a driving mechanism, the driving mechanism comprises a stator, a rotor, a crankshaft, a main bearing seat, a lower bearing and a motor sleeve, and a certain gap exists between the outer side face of the main bearing seat, the outer side face of the motor sleeve and the inner side face of the shell and between the outer side face of the lower bearing seat and the inner side face of the shell; a supporting plate is installed on the lower portion in the shell, the supporting plate is fixedly connected with the shell, the driving mechanism is installed on the supporting face of the supporting plate through a first elastic component, and the first elastic component is used for counteracting axial vibration of the scroll compressor; a guide ring is fixedly installed on the upper end face of the main bearing seat, the outer side face of the static scroll plate is sleeved with the guide ring in a clearance fit mode, a certain gap exists between the outer side face of the guide ring and the inner side face of the shell, a second elastic component is installed in the gap, and the second elastic component is used for counteracting radial vibration of the compression mechanism. The structure is ingenious, and noise is greatly reduced.

Description

Technical Field

[0001] This invention belongs to the field of scroll compressor technology, specifically relating to a scroll compressor with a flexible support structure. Background Technology

[0002] For scroll compressors, the periodic radial and axial forces generated by the compression mechanism (specifically, the stationary scroll and the moving scroll) during the compression process are the biggest factors that cause operating noise in the compressor.

[0003] Scroll compressors are generally divided into high-pressure side design (such as the structure disclosed in application number CN206111561) and low-pressure side design (such as the structure disclosed in application number CN95101939). In a scroll compressor with a high-pressure side design, the interior of the casing is connected to the exhaust zone, which is the high-pressure zone. The compression components, motor, main bearing, and lower bearing are all arranged in the high-pressure zone.

[0004] Low-pressure side design of scroll compressor: The internal space of the compressor is divided into an exhaust zone (high pressure) and an intake zone (low pressure) by a partition. The compression components, motor, main bearing and lower bearing are all in the low-pressure zone.

[0005] The structure disclosed in prior art 1 (application number: CN206111561) has a main bearing, a lower bearing, and a motor sleeve that are coaxially connected, and the motor sleeve is installed in the housing via a connector.

[0006] As in prior art 1 Figure 2 As shown, the drive assembly is fixed to the housing via a connector. If the connector is a rigid part, vibration is directly transmitted to the housing, exciting it to generate noise, resulting in limited noise reduction. If the connector is a flexible part, the supporting force is limited, making this design only suitable for high-pressure side designs. In a high-pressure side design, all compression components and drive assemblies of the scroll compressor are located in the high-pressure zone, and the entire assembly does not need to bear axial force after the above components are connected. However, in a low-pressure side design, the axially flexible design of the scroll compressor requires a larger axial supporting force due to the bias pressure in the intermediate cavity and the high-pressure zone of the exhaust port.

[0007] As in prior art 1 Figure 4 As shown, the drive assembly is fixed to the housing via a connector. If the connector is a rigid part, axial vibration is directly transmitted to the housing, exciting it to generate noise, resulting in limited noise reduction. If the connector is a flexible part, the supporting force is limited, making this design only suitable for high-pressure side designs. Furthermore, the drive assembly and compression component are cantilever structures with significant radial sway, posing a high risk of fatigue after welding the intake pipe. This patent does not offer a solution.

[0008] The structure disclosed in prior art 2 (application number: CN95101939) has its main bearing, lower bearing, and motor sleeve coaxially connected, with the motor sleeve interference-fitted into the housing. The motor's operating noise is directly transmitted to the motor sleeve, which then directly transmits it to the housing, resulting in very poor noise reduction. The radial force generated by the compressor's compression components is transmitted to the housing via the motor sleeve, exciting the housing to generate noise, which is the largest source of compressor noise.

[0009] The structure disclosed in prior art 3 (application number: CN200680025380) has a main bearing, a lower bearing, and a motor sleeve coaxially connected, with a gap between the motor sleeve and the housing, and the main bearing is interference-fitted into the housing. The radial force generated by the compressor compression component is directly transmitted to the housing through the main bearing housing, and excites the housing to generate noise.

[0010] The structure disclosed in prior art 4 (application number: CN2016108646124) has its main bearing, lower bearing, and motor sleeve all mounted on a flexible support frame. However, the compressor housing is usually rolled into shape, resulting in poor precision. After the main bearing, lower bearing, and motor are installed using flexible connectors, the accumulated errors are too numerous, making it difficult to guarantee coaxiality. Furthermore, the two connectors on the motor sleeve and main bearing housing are located in an internal enclosed space, making installation difficult. If the connectors are pre-installed and then pressed in, external welding of the housing is required, leading to too many potential leaks.

[0011] The most common technical solution in low-pressure scroll compressors is a radial and axial flexible design, as shown in application number CN201310141940.8. This design uses a guide ring to limit the position of the stationary scroll, which can be axially displaced. It uses an intermediate pressure chamber and floating seal technology to push the stationary scroll toward the moving scroll, so as to achieve a sealing between the end faces of the stationary scroll and the moving scroll.

[0012] In summary, in scroll compressors with low-pressure side design, either the motor housing is rigidly connected to the casing, or the main bearing housing is rigidly connected to the casing. The periodic radial and axial forces generated by the compression mechanism act directly on the casing without effective buffering and absorption, thus exciting the casing to generate significant noise. Summary of the Invention

[0013] To address the aforementioned technical problems, this invention proposes a scroll compressor with a flexible support structure.

[0014] To achieve the above objectives, the technical solution of the present invention is as follows:

[0015] This invention discloses a scroll compressor with a flexible support structure, comprising: a housing and a compression mechanism and a drive mechanism disposed within the housing;

[0016] The compression mechanism includes a stationary scroll plate and a moving scroll plate that mesh with each other;

[0017] The drive mechanism includes: stator, rotor, crankshaft, main bearing housing and lower bearing housing. The main bearing housing is used to support the crankshaft head, and the lower bearing housing is used to support the crankshaft tail.

[0018] The drive mechanism also includes: a motor sleeve, which is sleeved on the outer side of the stator, and the two ends of the motor sleeve are fixedly connected to the main bearing housing and the lower bearing housing respectively. There is a certain gap between the outer side of the main bearing housing, the motor sleeve, the lower bearing housing and the inner side of the housing.

[0019] A support plate is installed in the lower part of the housing. The support plate is fixedly connected to the housing, and the drive mechanism is installed on the support surface of the support plate through an elastic component. The elastic component is used to counteract the axial vibration of the scroll compressor.

[0020] A guide ring is fixedly installed on the upper end face of the main bearing housing. The guide ring is fitted with a clearance fit on the outer side of the stationary vortex disk. There is a certain gap between the outer side of the guide ring and the inner side of the housing. An elastic component 2 is installed in the gap. The elastic component 2 is used to counteract the radial vibration of the compression mechanism.

[0021] This invention discloses a scroll compressor with a flexible support structure, which employs a scroll compressor noise reduction technology suitable for low-pressure side design, and has the following beneficial effects:

[0022] First, there are gaps between the main bearing housing, the motor sleeve, the lower bearing housing and the housing. The drive mechanism is installed on the support surface of the support plate through an elastic component. The elastic component can effectively absorb the axial vibration of the scroll compressor.

[0023] Secondly, in this invention, the guide ring is fixed to the main bearing seat and fitted with a clearance fit around the outer periphery of the stationary vortex disk to achieve axial flexibility. A gap exists between the guide ring and the housing, and an elastic component two is provided between the guide ring and the housing. This elastic component two can counteract and absorb the radial oscillation of the compression mechanism.

[0024] Third, compared with the traditional rigid connection between the main bearing housing, the lower bearing housing and the housing, the scroll compressor of the present invention is only fixedly connected to the housing by the support plate. Since the noise source of the scroll compressor mainly comes from the scroll mechanism and the drive mechanism, the bottom of the scroll compressor is less. The present invention has a clever structure and greatly reduces noise.

[0025] Based on the above technical solution, the following improvements can be made:

[0026] As a preferred embodiment, a pressure plate is installed on the upper end face of the guide ring, and fasteners pass through the through holes on the pressure plate and the guide ring in sequence along the axial direction of the scroll compressor, and extend into the mounting groove on the main bearing seat.

[0027] Furthermore, the pressure plate fixes the second elastic component between the guide ring and the housing.

[0028] In the preferred embodiment described above, the guide ring is fitted with a clearance fit on the outer circumference of the stationary vortex disk to limit the radial position of the stationary vortex and allow the stationary vortex to move axially a certain distance.

[0029] As a preferred embodiment, a first conical surface is provided on the outer side of the guide ring, and a second conical surface matching the first conical surface is provided on the elastic component 2.

[0030] Using the preferred embodiment described above, the second elastic component is fixed between the guide ring and the housing by a pressure plate. Under the interaction of the first and second conical surfaces, the second elastic component is in a tensile state, further buffering the radial sway of the compression mechanism and the guide ring.

[0031] As a preferred embodiment, a stepped surface is provided on the outer side of the guide ring, and the stepped surface is used to support the elastic component two.

[0032] With the preferred embodiment described above, the second elastic component is supported by the stepped surface of the guide ring, making the second elastic component more stable.

[0033] As a preferred embodiment, several upper motor mounting legs and lower motor mounting legs are distributed at the upper and lower ends of the motor sleeve, respectively, and both the upper motor mounting legs and the lower motor mounting legs extend along the axial direction of the motor sleeve.

[0034] The upper end face of the upper motor mounting leg is in contact with the lower end face of the main bearing housing, and the lower end face of the lower motor mounting leg is in contact with the upper end face of the lower bearing housing.

[0035] The above-mentioned preferred solution is easy to install, and the connection between the motor sleeve and the main bearing housing and the lower bearing housing is stable.

[0036] As a preferred embodiment, several upper bearing housing mounting legs and lower bearing housing mounting legs are distributed at the upper and lower ends of the main bearing housing, respectively, and both the upper bearing housing mounting legs and the lower bearing housing mounting legs extend along the axial direction of the main bearing housing.

[0037] A guide ring is fixedly installed on the upper end face of the upper bearing housing mounting leg, and the lower end face of the lower bearing housing mounting leg is in contact with the upper end face of the upper motor mounting leg.

[0038] With the above-mentioned preferred solution, the connection between the main bearing housing, the guide ring, and the motor sleeve is stable.

[0039] As a preferred embodiment, an elastic component 3 is installed in the gap between the outer side of the main bearing housing and the inner side of the housing.

[0040] By adopting the above-mentioned preferred scheme, the radial vibration of the elastic component three-absorption compression mechanism is further utilized.

[0041] As a preferred embodiment, the support plate has an inverted U-shaped structure, and the outer side of the support plate is welded to the inner side of the shell.

[0042] By adopting the above-mentioned preferred scheme, the inverted U-shaped support plate can provide good flexible support for the drive mechanism and buffer the vibration of the drive mechanism.

[0043] As a preferred embodiment, the upper end face of the lower bearing housing fits against the lower end face of the motor sleeve, and the two are fixedly connected by fasteners.

[0044] The lower end face of the lower bearing housing is attached to the upper end face of the support plate by an elastic member, and the two are fixedly connected by another fastener.

[0045] Using the preferred scheme described above, two fasteners are used to fix the lower bearing housing to the motor sleeve and to the support plate, respectively. During assembly, the lower bearing housing can be pre-assembled by fixing it to the motor sleeve to form a pre-assembled structure, and then installed to the support plate, making the assembly process more convenient.

[0046] As a preferred embodiment, the upper end face of the support plate is attached to the lower end face of the motor sleeve through an elastic component, and the lower end face of the support plate is attached to the upper end face of the lower bearing seat through another elastic component. The motor sleeve, support plate, lower bearing seat and two elastic components are fixedly connected by a fastener.

[0047] By adopting the above-mentioned preferred solution, the motor sleeve, support plate, lower bearing seat and two elastic components are fixed together by a single fastener, making the overall structure more stable. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is one of the structural schematic diagrams of a scroll compressor provided in an embodiment of the present invention.

[0050] Figure 2 for Figure 1 A magnified view of a portion of the mounting location of the elastic component.

[0051] Figure 3 for Figure 1 A magnified view of the installation location of the second elastic component.

[0052] Figure 4 This is a schematic diagram of the structure of the guide ring provided in an embodiment of the present invention.

[0053] Figure 5 This is a schematic diagram of the structure of the second elastic component provided in an embodiment of the present invention.

[0054] Figure 6 This is a schematic diagram showing the connection of the main bearing housing, motor sleeve, and lower bearing housing provided in an embodiment of the present invention.

[0055] Figure 7 This is a schematic diagram of the main bearing housing provided in an embodiment of the present invention.

[0056] Figure 8 This is a schematic diagram of the structure of the lower bearing housing provided in an embodiment of the present invention.

[0057] Figure 9 This is a second schematic diagram of the structure of a scroll compressor provided in an embodiment of the present invention.

[0058] Figure 10 for Figure 9 A magnified view of a portion of the mounting location of the elastic component.

[0059] Wherein: 1-House, 2-Compression mechanism, 21-Stationary scroll plate, 22-Moving scroll plate, 3-Drive mechanism, 31-Stator, 32-Rotor, 33-Crankshaft, 34-Main bearing housing, 341-Upper bearing housing mounting leg, 342-Lower bearing housing mounting leg, 343-Small step, 35-Lower bearing housing, 351-Small step, 36-Motor sleeve, 361-Upper motor mounting leg, 362-Lower motor mounting leg, 4-Support plate, 51-Elastic component one, 52-Elastic component two, 521-Second conical surface, 6-Guide ring, 62-First conical surface, 62-Step surface, 7-Fastener, 8-Pressure plate. Detailed Implementation

[0060] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0061] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0062] Using ordinal numbers such as “first,” “second,” “third,” etc. to describe ordinary objects merely indicates different instances of similar objects and is not intended to imply that the objects being described must have a given order in time, space, sequence, or any other way.

[0063] The expression “includes” is an “open-ended” expression, which means that there is a corresponding component or step, and should not be interpreted as excluding additional components or steps.

[0064] To achieve the objectives of this invention, some embodiments of a scroll compressor with a flexible support structure, such as... Figure 1-3 As shown, the scroll compressor includes: a housing 1 and a compression mechanism 2 and a drive mechanism 3 disposed within the housing 1;

[0065] The compression mechanism 2 includes a stationary scroll plate 21 and a moving scroll plate 22 that mesh with each other;

[0066] The drive mechanism 3 includes: a stator 31, a rotor 32, a crankshaft 33, a main bearing housing 34, and a lower bearing housing 35. The main bearing housing 34 is used to support the head of the crankshaft 33, and the lower bearing housing 35 is used to support the tail of the crankshaft 33.

[0067] Furthermore, in an embodiment of the present invention, the drive mechanism 3 further includes: a motor sleeve 36, which is sleeved on the outer side of the stator 31, and the two ends of the motor sleeve 36 are concentrically fixedly connected to the main bearing seat 34 and the lower bearing seat 35, respectively. The outer diameters of the main bearing seat 34, the motor sleeve 36, and the lower bearing seat 35 are all smaller than the inner diameter of the housing 1, so that there is a certain gap between the outer side surface of the main bearing seat 34, the motor sleeve 36, and the lower bearing seat 35 and the inner side surface of the housing 1.

[0068] A support plate 4 is installed in the lower part of the housing 1. The support plate 4 is fixedly connected to the housing 1, and the drive mechanism 3 is installed on the support surface (i.e., the upper end surface) of the support plate 4 through an elastic member 51. The elastic member 51 is used to counteract the axial vibration of the scroll compressor.

[0069] A guide ring 6 (the outer diameter of the guide ring 6 is smaller than the inner diameter of the housing 1) is fixedly installed on the upper end face of the main bearing seat 34. The guide ring 6 is fitted with a clearance fit on the outer side of the stationary vortex disk 21. There is a certain gap between the outer side of the guide ring 6 and the inner side of the housing 1, and an elastic component 2 52 is installed in the gap. The elastic component 2 52 is used to counteract the radial vibration of the compression mechanism 2.

[0070] It is worth noting that in this invention, the upper end face of a certain component is the upward-facing end face, and the lower end face is the downward-facing end face. For example, the upper end face of the main bearing housing 34 refers to the upward-facing end face of the main bearing housing 34.

[0071] Specifically, the upper end face of the lower bearing housing 35 is fitted with the lower end face of the motor sleeve 36, and the two are fixedly connected by fasteners 7; the lower end face of the lower bearing housing 35 is fitted with the upper end face of the support plate 4 through an elastic member 51, and the two are fixedly connected by another fastener 7.

[0072] It is worth noting that the present invention utilizes two fasteners 7 to fix the lower bearing seat 35 to the motor sleeve 36 and to fix the lower bearing seat 35 to the support plate 4. During the assembly process, the lower bearing seat 35 and the motor sleeve 36 can be fixed first to form a pre-assembled structure, and then installed with the support plate 4, making the assembly process more convenient.

[0073] The aforementioned elastic component 51 may be, but is not limited to, an elastic pad (of basically equal thickness) that is compressible and has a certain elastic deformation capability. It is made of composite material, and further made of non-asbestos fiber reinforced rubber composite material as the main material. The axial vibration generated by the compression mechanism 2 and the shaft system is effectively absorbed by the support plate 4 and the elastic component 51.

[0074] The aforementioned elastic component 52 may be, but is not limited to, an elastic ring with a certain elastic deformation capability, which is made of nitrile rubber, fluororubber or polytetrafluoroethylene.

[0075] The main bearing housing 34 and the lower bearing housing 35 are respectively installed at both ends of the motor sleeve 36, which can easily ensure the coaxiality of the upper and lower bearings with the motor.

[0076] Experimental verification showed that the 130cc displacement sample designed according to the above embodiment had a noise level that was 2 to 5 decibels lower than that of mainstream products of the same displacement on the market under ARI standard operating conditions and within the operating range of 1200-6000rpm.

[0077] This invention discloses a scroll compressor with a flexible support structure, which employs a scroll compressor noise reduction technology suitable for low-pressure side design, and has the following beneficial effects:

[0078] First, there are gaps between the main bearing housing 34, the motor sleeve 36, the lower bearing housing 35 and the housing 1. The drive mechanism 3 is mounted on the support surface of the support plate 4 through the elastic component 51. The elastic component 51 can effectively absorb the axial vibration of the compressor.

[0079] Secondly, in this invention, the guide ring 6 is fixed to the main bearing seat 34 and fitted with a clearance fit around the outer periphery of the stationary scroll 21 to achieve axial flexibility. There is a gap between the guide ring 6 and the housing 1, and an elastic component 52 is provided between the guide ring 6 and the housing 1. The elastic component 52 can counteract and absorb the radial oscillation of the compression mechanism 2.

[0080] Third, compared with the traditional rigid connection (e.g., welding) between the main bearing housing 34, the lower bearing housing 35 and the housing 1, the scroll compressor of the present invention has only the support plate 4 fixedly connected to the housing 1. Since the noise source of the scroll compressor mainly comes from the scroll mechanism and the drive mechanism 3, the bottom of the scroll compressor is less. The present invention has a clever structure and greatly reduces noise.

[0081] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining features are the same, except that a pressure plate 8 is installed on the upper end face of the guide ring 6, and the fastener 7 passes through the through hole on the pressure plate 8 and the through hole on the guide ring 6 in sequence along the axial direction of the scroll compressor, and extends into the mounting groove on the main bearing seat 34.

[0082] Furthermore, the pressure plate 8 fixes the elastic component 52 between the guide ring 6 and the housing 1.

[0083] Using the preferred scheme described above, the guide ring 6 is fitted with a clearance fit on the outer circle of the stationary vortex disk 21 to limit the radial position of the stationary vortex and allow the stationary vortex to move axially a certain distance (e.g., 0.1-2 mm).

[0084] The guide ring 6 is fixed to the main bearing housing 34 using fasteners 7 (e.g., screws). It is worth noting that when the fasteners 7 are locked, the lower end face of the pressure plate 8 is in close contact with the upper end face of the guide ring 6.

[0085] Furthermore, such as Figure 4 , 5 As shown, based on the above embodiment, a first conical surface 61 is provided on the outer side of the guide ring 6, and a second conical surface 521 matching the first conical surface 61 is provided on the elastic component 52.

[0086] Using the preferred embodiment described above, the second elastic component 52 is fixed between the guide ring 6 and the housing 1 by the pressure plate 8. Under the interaction of the first conical surface 61 and the second conical surface 521, the second elastic component 52 is in a tensile state, further buffering the radial sway of the compression mechanism 2 and the guide ring 6. Moreover, the second elastic component 52 with the second conical surface 521 is easier to position and install.

[0087] Furthermore, based on the above embodiment, a stepped surface 62 is provided on the outer side of the guide ring 6, and the stepped surface 62 is used to support the elastic component 52.

[0088] With the preferred embodiment described above, the second elastic component 52 is supported by the stepped surface 62 of the guide ring 6, making the second elastic component 52 more stable.

[0089] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining technical features are the same, the difference being that, for example... Figure 6-8 As shown, several upper motor mounting legs 361 and lower motor mounting legs 362 are distributed at the upper and lower ends of the motor sleeve 36, respectively. Both the upper motor mounting legs 361 and the lower motor mounting legs 362 extend along the axial direction of the motor sleeve 36.

[0090] The upper end face of the upper motor mounting leg 361 is in contact with the lower end face of the main bearing housing 34;

[0091] The lower end face of the lower motor mounting leg 362 is in contact with the upper end face of the lower bearing seat 35.

[0092] Furthermore, several upper bearing housing mounting legs 341 and lower bearing housing mounting legs 35 are distributed at the upper and lower ends of the main bearing housing 34, respectively, and both the upper bearing housing mounting legs 341 and the lower bearing housing mounting legs 342 extend along the axial direction of the main bearing housing 34.

[0093] A guide ring 6 is fixedly installed on the upper end face of the upper bearing housing mounting leg 341, and the lower end face of the lower bearing housing mounting leg 342 is in contact with the upper end face of the upper motor mounting leg 361.

[0094] The preferred solution described above is easy to install and ensures a stable connection between the various components. In some embodiments, the outer side of the upper bearing housing mounting leg 341 faces the center line of the main bearing housing 34 shaft.

[0095] Specifically, the above-mentioned motor sleeve 36 is machined after being formed into a casting. The inner and outer diameters are concentric, and the outer diameter is 0.5-2mm smaller than the inner diameter of the housing. The upper and lower ends have axially growing upper and lower motor mounting legs 361 and 362, respectively. The upper and lower motor mounting legs 361 and 362 have end faces perpendicular to the axis.

[0096] The main bearing housing 34 has axially growing upper and lower bearing housing mounting legs 341 and 342, with end faces perpendicular to the axis at the end of the legs. The main bearing housing 34 is radially positioned and concentric with the motor sleeve 36 through a small step 343.

[0097] The lower bearing housing 35 has an end face on the side facing the motor sleeve 36. The lower bearing housing 35 is radially positioned with the motor sleeve 36 and kept concentric by a small step 351.

[0098] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining technical features are the same, except that an elastic member three (not shown in the figure) is installed in the gap between the outer side of the main bearing seat 34 and the inner side of the housing 1.

[0099] The preferred embodiment described above further utilizes the elastic component three to absorb the radial vibration of the compression mechanism 2. The structure and material of the elastic component three are similar to or the same as those of the elastic component two 52.

[0100] To further optimize the implementation effect of the present invention, in some other embodiments, the remaining features are the same, except that the support plate 4 has an inverted U-shaped structure and the outer side of the support plate 4 is welded to the inner side of the shell 1.

[0101] By adopting the above-mentioned preferred scheme, the inverted U-shaped support plate 4 can provide good flexible support for the drive mechanism 3 and buffer the vibration of the drive mechanism 3.

[0102] Specifically, the support plate 4 is a stamped part with a thickness of 2-4mm and has an L-shaped cross-section. The support plate 4 is concentrically placed at the lower part of the housing 1 and welded to the inner side of the housing 1. The support plate 4 has two parallel end faces, one above the other, perpendicular to the axis of the housing 1.

[0103] In the above embodiment, two fasteners 7 are used to fix the lower bearing housing 35 to the motor sleeve 36, and the lower bearing housing 35 to the support plate 4. In other embodiments, such as Figure 9-10 As shown, the upper end face of the support plate 4 is attached to the lower end face of the motor sleeve 36 through an elastic member 51, and the lower end face of the support plate 4 is attached to the upper end face of the lower bearing seat 35 through another elastic member. The motor sleeve 36, the support plate 4, the lower bearing seat 35 and the two elastic members 51 are fixedly connected by a fastener 7.

[0104] By adopting the above-mentioned preferred solution, the motor sleeve 36, support plate 4, lower bearing seat 35 and two elastic components 51 are fixed by a fastener 7, making the overall structure more stable.

[0105] The above-mentioned implementation methods can be carried out in parallel or in a cross-cutting manner.

[0106] In summary, this invention designs a scroll compressor for the low-pressure side, employing a flexible support structure. The support plate 4 is fixed to the inner wall of the housing 1, and the drive mechanism 3 is mounted on the support surface of the support plate 4 via an elastic component 51. The axial vibration generated by the compression mechanism 2 and the shaft system is effectively absorbed by the support plate 4 and the elastic component 51. A gap exists between the drive mechanism 3 and the housing 1. A guide ring 6 is fitted with a clearance fit on the outside of the stationary scroll and fixed to the main bearing seat 34. An elastic component 52 is provided between the guide ring 6 and the housing 1 to absorb the radial vibration of the compression mechanism 2 and the guide ring 6. Therefore, both radial and axial vibrations of this invention can be effectively absorbed and buffered, achieving low-noise operation of the scroll compressor.

[0107] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0108] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0109] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A scroll compressor with a flexible support structure, comprising: The housing and the compression mechanism and drive mechanism disposed within the housing; The compression mechanism includes a stationary scroll plate and a moving scroll plate that mesh with each other; The drive mechanism includes: a stator, a rotor, a crankshaft, a main bearing housing, and a lower bearing housing. The main bearing housing is used to support the crankshaft head, and the lower bearing housing is used to support the crankshaft tail. The characteristic feature is that the driving mechanism further includes: a motor sleeve, which is sleeved on the outer surface of the stator, and the two ends of the motor sleeve are respectively fixedly connected to the main bearing seat and the lower bearing seat, and there is a certain gap between the outer surface of the main bearing seat, the motor sleeve, the lower bearing seat and the inner surface of the housing; A support plate is installed in the lower part of the housing. The support plate is fixedly connected to the housing, and the drive mechanism is installed on the support surface of the support plate through an elastic component. The elastic component is used to counteract the axial vibration of the scroll compressor. A guide ring is fixedly installed on the upper end face of the main bearing housing. The guide ring is fitted with a clearance fit on the outer side of the stationary vortex disk. There is a certain gap between the outer side of the guide ring and the inner side of the housing. An elastic component two is installed in the gap. The elastic component two is used to counteract the radial vibration of the compression mechanism.

2. The scroll compressor according to claim 1, characterized in that, A pressure plate is installed on the upper end face of the guide ring. Fasteners pass through the through holes on the pressure plate and the guide ring in sequence along the axial direction of the scroll compressor, and extend into the mounting groove on the main bearing seat. Furthermore, the pressure plate fixes the elastic component two between the guide ring and the housing.

3. The scroll compressor according to claim 2, characterized in that, A first conical surface is provided on the outer side of the guide ring, and a second conical surface matching the first conical surface is provided on the elastic component 2.

4. The scroll compressor according to claim 3, characterized in that, A stepped surface is provided on the outer side of the guide ring, and the stepped surface is used to support the elastic component two.

5. The scroll compressor according to claim 1, characterized in that, Several upper motor mounting legs and lower motor mounting legs are distributed at the upper and lower ends of the motor sleeve, respectively, and both the upper motor mounting legs and the lower motor mounting legs extend along the axial direction of the motor sleeve. The upper end face of the upper motor mounting leg is in contact with the lower end face of the main bearing housing, and the lower end face of the lower motor mounting leg is in contact with the upper end face of the lower bearing housing.

6. The scroll compressor according to claim 5, characterized in that, Several upper bearing housing mounting legs and lower bearing housing mounting legs are distributed at the upper and lower ends of the main bearing housing, respectively, and both the upper bearing housing mounting legs and the lower bearing housing mounting legs extend along the axial direction of the main bearing housing. A guide ring is fixedly installed on the upper end face of the upper bearing seat mounting leg, and the lower end face of the lower bearing seat mounting leg is in contact with the upper end face of the upper motor mounting leg.

7. The scroll compressor according to claim 1, characterized in that, An elastic component three is installed in the gap between the outer side of the main bearing housing and the inner side of the housing.

8. The scroll compressor according to claim 1, characterized in that, The support plate has an inverted U-shaped structure, and the outer side of the support plate is welded to the inner side of the shell.

9. The scroll compressor according to any one of claims 1-8, characterized in that, The upper end face of the lower bearing housing fits against the lower end face of the motor sleeve, and the two are fixedly connected by fasteners. The lower end face of the lower bearing seat is attached to the upper end face of the support plate through an elastic member, and the two are fixedly connected by another fastener.

10. The scroll compressor according to any one of claims 1-8, characterized in that, The upper end face of the support plate is attached to the lower end face of the motor sleeve through an elastic component, and the lower end face of the support plate is attached to the upper end face of the lower bearing seat through another elastic component. The motor sleeve, the support plate, the lower bearing seat and the two elastic components are fixedly connected by a fastener.

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