Scroll compressor with flexible supporting structure

Abstract

The utility model discloses a scroll compressor with a flexible support structure, which 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 certain gaps are reserved between the outer side surfaces of the main bearing seat, the motor sleeve and the lower bearing seat and the inner side surface 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 noise reduction device is ingenious in structure, and noise is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of scroll compressors, and in particular relates to a scroll compressor with a flexible support structure. Background Art

[0002] For a scroll compressor, the periodic radial force and axial force generated by its compression mechanism (specifically, the fixed scroll and the orbiting scroll) during the compression process excites the shell, which is the biggest factor in the operating noise of the compressor.

[0003] Scroll compressors are generally divided into high-pressure side designs (such as the structure disclosed in application number CN206111561) and low-pressure side designs (such as the structure disclosed in application number CN95101939). Scroll compressors with high-pressure side designs have a high-pressure area where the interior of the shell is connected to the exhaust area, and the compression components, motor, main bearing, and lower bearing are all arranged in the high-pressure area.

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

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

[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, the vibration is directly transmitted to the housing, exciting the housing to generate noise, and the noise reduction effect is limited. If the connector is a flexible part, the supporting force is limited, and this design is only suitable for high-pressure side design. In a high-pressure side scroll compressor, all compression components and drive components are located in the high-pressure area. After the above components are connected, the entire unit does not need to bear axial force. However, the axially flexible design of the low-pressure side scroll compressor requires a larger axial support force due to the bias pressure of the intermediate cavity and the exhaust port being in the high-pressure area.

[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 rigid, axial vibration is directly transmitted to the housing, exciting the housing and generating noise, limiting the noise reduction effect. If the connector is flexible, the supporting force is limited, making this design suitable only for the high-pressure side. Furthermore, the drive assembly and compression component are cantilever structures with significant radial swing, posing a significant risk of fatigue after welding the intake pipe. The patent does not propose a solution.

[0008] The structure disclosed in Prior Art 2 (Application No. CN95101939) features a main bearing and lower bearing coaxially connected to the motor sleeve, which is fitted into the housing with an interference fit. This transmits the motor's operating noise directly to the motor sleeve, which in turn transmits it directly to the housing, resulting in poor noise reduction. The radial force generated by the compressor's compression components is transmitted to the housing via the motor sleeve, generating noise in the housing and contributing to the noise. This is the primary source of compressor noise.

[0009] The structure disclosed in prior art 3 (Application No. CN200680025380) features a main bearing, lower bearing, and motor housing coaxially connected. A gap exists between the motor housing and the housing, and the main bearing is installed within the housing with an interference fit. The radial force generated by the compressor's compression components is directly transmitted to the housing via the main bearing seat, exciting the housing and generating noise.

[0010] The structure disclosed in Prior Art 4 (Application Number: CN2016108646124) features a main bearing, lower bearing, and motor housing mounted on a flexible support frame. However, the compressor housing is typically roll-formed, resulting in poor precision. After the main bearing, lower bearing, and motor are installed via flexible connectors, the cumulative error is significant, making coaxiality difficult to ensure. Furthermore, the two connectors on the motor housing and main bearing seat are located within a closed internal space, making installation difficult. If the connectors are pre-installed and then pressed into place, external plug welding of the housing is required, resulting in numerous leak points.

[0011] The most common technical solution in low-pressure side scroll compressors is radial and axial flexible design, as shown in application number: CN201310141940.8. This design uses a guide ring to limit the position of the static scroll, and the static scroll can be displaced axially. An intermediate pressure chamber and floating seal technology are used to push the static scroll toward the orbiting scroll, achieving a seal between the end faces of the static scroll and the orbiting scroll.

[0012] In summary, in a scroll compressor designed on the low-pressure side, either the motor sleeve is rigidly connected to the housing, or the main bearing seat is rigidly connected to the housing. The periodic radial force and axial force generated by the compression mechanism act directly on the housing and cannot be effectively buffered and absorbed, thus stimulating the housing to produce relatively loud noise. Utility Model Content

[0013] In order to solve the above technical problems, the utility model proposes a scroll compressor with a flexible support structure.

[0014] In order to achieve the above object, the technical solution of the utility model is as follows:

[0015] The utility model discloses a scroll compressor with a flexible support structure, comprising: a shell, a compression mechanism and a driving mechanism arranged in the shell;

[0016] The compression mechanism includes: a fixed scroll and an orbiting scroll meshing with each other;

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

[0018] The drive mechanism also includes: a motor sleeve, which is arranged on the outer surface of the stator, and the two ends of the motor sleeve are fixedly connected to the main bearing seat and the lower bearing seat respectively, and there is a certain gap between the outer side surfaces of the main bearing seat, the motor sleeve, the lower bearing seat and the inner side surface of the shell;

[0019] A support plate is installed at the lower part of the shell, the support plate is fixedly connected to the shell, and the driving mechanism is installed on the support surface of the support plate through an elastic component 1, and the elastic component 1 is used to offset the axial vibration of the scroll compressor;

[0020] A guide ring is fixedly installed on the upper end face of the main bearing seat. The guide ring is sleeved on the outer side face of the static scroll with a clearance fit. There is a certain gap between the outer side face of the guide ring and the inner side face of the shell, and an elastic component 2 is installed in the gap. The elastic component 2 is used to offset the radial vibration of the compression mechanism.

[0021] The utility model discloses a scroll compressor with a flexible support structure, which adopts 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 seat, the motor sleeve, the lower bearing seat and the housing. The drive mechanism is installed on the supporting surface of the support plate through the elastic component 1, and the elastic component 1 can effectively absorb the axial vibration of the scroll compressor.

[0023] Second, the present invention secures the guide ring to the main bearing housing and fits over the outer circumference of the fixed scroll with a clearance fit, achieving axial flexibility. A gap exists between the guide ring and the housing, and a second elastic component is positioned between them to offset and absorb radial oscillation of the compression mechanism.

[0024] Third, compared with the traditional method in which the main bearing seat and the lower bearing seat are rigidly connected to the shell, the scroll compressor of the present invention has only the support plate fixedly connected to the shell. Since the noise source of the scroll compressor mainly comes from the scroll mechanism and the drive mechanism, the scroll compressor has less bottom. The structure of the present invention is ingenious and greatly reduces noise.

[0025] On the basis of the above technical solution, the following improvements can be made:

[0026] As a preferred solution, a pressure plate is installed on the upper end surface of the guide ring, and the fastener passes through the through hole on the pressure plate and the through hole on the guide ring in the axial direction of the scroll compressor and extends into the installation groove on the main bearing seat;

[0027] The pressing plate fixes the second elastic component between the guide ring and the shell.

[0028] With the above preferred solution, the guide ring is sleeved on the outer circle of the static scroll with clearance fit, so as to limit the radial position of the static scroll and allow the static scroll to move axially for a certain distance.

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

[0030] By adopting the above preferred solution, the second elastic component is fixed between the guide ring and the shell through the pressure plate. Under the interaction between the first cone surface and the second cone surface, the second elastic component is in a tensioned state, further buffering the radial shaking of the compression mechanism and the guide ring.

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

[0032] With the above preferred solution, the second elastic component is supported by the step surface of the guide ring, and the second elastic component is more stable.

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

[0034] The upper end surface of the upper motor mounting leg is fitted with the lower end surface of the main bearing seat, and the lower end surface of the lower motor mounting leg is fitted with the upper end surface of the lower bearing seat.

[0035] The above preferred solution is adopted, which is convenient for installation and has a stable connection between the motor sleeve and the main bearing seat and the lower bearing seat.

[0036] As a preferred solution, a plurality of upper bearing seat mounting legs and lower bearing seat mounting legs are respectively distributed at the upper and lower ends of the main bearing seat, and the upper bearing seat mounting legs and the lower bearing seat mounting legs both extend along the axial direction of the main bearing seat;

[0037] The upper end surface of the upper bearing seat mounting leg is fixedly mounted with a guide ring, and the lower end surface of the lower bearing seat mounting leg is fitted with the upper end surface of the upper motor mounting leg.

[0038] By adopting the above preferred solution, the main bearing seat is firmly connected to the guide ring and the motor sleeve.

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

[0040] By adopting the above preferred solution, elastic component three is further utilized to absorb radial vibration of the compression mechanism.

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

[0042] By adopting the above preferred solution, the support plate with an inverted U-shaped structure can support the driving mechanism with good flexibility and buffer the vibration of the driving mechanism.

[0043] As a preferred solution, the upper end surface of the lower bearing seat is fitted with the lower end surface of the motor sleeve, and the two are fixedly connected by fasteners;

[0044] The lower end surface of the lower bearing seat is fitted with the upper end surface of the support plate through an elastic component 1, and the two are fixedly connected by another fastener.

[0045] With the preferred solution, two fasteners are used to securely connect the lower bearing seat to the motor housing and the lower bearing seat to the support plate. During assembly, the lower bearing seat can be secured to the motor housing to form a pre-assembled structure, and then mounted to the support plate, making the assembly process more convenient.

[0046] As a preferred solution, the upper end surface of the support plate is fitted with the lower end surface of the motor sleeve through an elastic component, the lower end surface of the support plate is fitted with the upper end surface of the lower bearing seat through another elastic component, and a fastener is used to fix the motor sleeve, the support plate, the lower bearing seat and the two elastic components together.

[0047] By adopting the above preferred solution, the motor housing, the support plate, the lower bearing seat and the two elastic components are fixed together by a fastener, and the overall structure is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

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

[0050] Figure 2 for Figure 1 A partial enlarged view of the installation location of the elastic component.

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

[0052] Figure 4A schematic structural diagram of a guide ring provided in an embodiment of the utility model.

[0053] Figure 5 This is a structural diagram of the elastic component 2 provided in an embodiment of the present utility model.

[0054] Figure 6 This is a schematic diagram of the connection between the main bearing seat, motor sleeve and lower bearing seat provided in an embodiment of the present utility model.

[0055] Figure 7 This is a schematic structural diagram of the main bearing seat provided in an embodiment of the present utility model.

[0056] Figure 8 This is a schematic structural diagram of the lower bearing seat provided in an embodiment of the present utility model.

[0057] Figure 9 This is the second structural schematic diagram of the scroll compressor provided in an embodiment of the present utility model.

[0058] Figure 10 for Figure 9 A partial enlarged view of the installation location of the elastic component.

[0059] Among them: 1-housing, 2-compression mechanism, 21-static scroll, 22-orbiting scroll, 3-driving mechanism, 31-stator, 32-rotor, 33-crankshaft, 34-main bearing seat, 341-upper bearing seat mounting leg, 342-lower bearing seat mounting leg, 343-small step, 35-lower bearing seat, 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 DESCRIPTION

[0060] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0062] The use of ordinal numbers "first," "second," "third," etc. to describe common objects merely indicates that different instances of similar objects are involved and is not intended to imply that the objects so described must have a given order in time, space, ranking, or in any other manner.

[0063] The expression “including” an element is an “open” expression. The “open” expression only means that the corresponding components or steps exist, and should not be interpreted as excluding additional components or steps.

[0064] In order to achieve the purpose of the present invention, in some embodiments of a scroll compressor having a flexible support structure, as Figure 1-3 As shown, the scroll compressor comprises: a shell 1 and a compression mechanism 2 and a driving mechanism 3 arranged in the shell 1;

[0065] The compression mechanism 2 includes a fixed scroll 21 and an orbiting scroll 22 that mesh with each other;

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

[0067] Furthermore, in the embodiment of the present utility model, the drive mechanism 3 further includes: a motor sleeve 36, the motor sleeve 36 is sleeved on the outer surface of the stator 31, and the two ends of the motor sleeve 36 are respectively and concentrically fixedly connected to the main bearing seat 34 and the lower bearing seat 35, and 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 surfaces 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 at 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 supporting surface (i.e., the upper end surface) of the support plate 4 through an elastic component 51. The elastic component 51 is used to offset the axial vibration of the scroll compressor.

[0069] A guide ring 6 is fixedly installed on the upper end face of the main bearing seat 34 (the outer diameter of the guide ring 6 is smaller than the inner diameter of the shell 1), and the guide ring 6 is loosely fitted on the outer side of the static scroll plate 21. There is a certain gap between the outer side surface of the guide ring 6 and the inner side surface of the shell 1, and an elastic component 52 is installed in the gap. The elastic component 52 is used to offset the radial vibration of the compression mechanism 2.

[0070] It is worth noting that the upper end surface of a component in the present invention is the end surface facing upward, and the lower end surface is the end surface facing downward. For example, the upper end surface of the main bearing seat 34 refers to the end surface of the main bearing seat 34 facing upward.

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

[0072] It is noteworthy that the present invention utilizes two fasteners 7 to respectively securely connect the lower bearing seat 35 to the motor housing 36 and to securely connect the lower bearing seat 35 to the support plate 4. During assembly, the lower bearing seat 35 and the motor housing 36 can be secured first to form a pre-assembled structure, which can then be installed with the support plate 4, making the assembly process more convenient.

[0073] The above-mentioned elastic component 51 can be, but is not limited to, an elastic gasket (basically of equal thickness) that can be compressed and has a certain elastic deformation ability. It is made of a composite material, and the main material is further made of a non-asbestos fiber reinforced rubber composite 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 elastic component 2 52 may be, but is not limited to, an elastic ring with a certain elastic deformation capability, and is made of nitrile butadiene rubber, fluororubber or polytetrafluoroethylene.

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

[0076] After experimental verification, the noise level of the 130cc displacement sample designed according to the above embodiment is 2 to 5 decibels lower than that of mainstream products of the same displacement on the market in the operating range of 1200-6000rpm under ARI standard conditions.

[0077] The utility model discloses a scroll compressor with a flexible support structure, which adopts 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 seat 34, the motor sleeve 36, the lower bearing seat 35 and the housing 1. The drive mechanism 3 is installed on the supporting 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] Second, the present invention secures the guide ring 6 to the main bearing housing 34 and fits over the outer circumference of the fixed scroll 21 with a clearance fit, achieving axial flexibility. A gap exists between the guide ring 6 and the housing 1, and a second elastic member 52 is disposed between them to offset and absorb radial oscillation of the compression mechanism 2.

[0080] Third, compared with the traditional method in which the main bearing seat 34 and the lower bearing seat 35 are rigidly connected to the shell 1 (such as welding), the scroll compressor of the present invention has only the support plate 4 fixedly connected to the shell 1. Since the noise source of the scroll compressor mainly comes from the scroll mechanism and the drive mechanism 3, the scroll compressor has less bottom, and the structure of the present invention is ingenious, which greatly reduces noise.

[0081] In order to further optimize the implementation effect of the present invention, in other embodiments, the remaining characteristic technologies are the same, except that a pressure plate 8 is installed on the upper end surface 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 the axial direction of the scroll compressor, and extends into the installation groove on the main bearing seat 34;

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

[0083] With the above preferred solution, the guide ring 6 is sleeved on the outer circle of the static scroll 21 with clearance fit to limit the radial position of the static scroll and allow the static scroll to move axially a certain distance (eg 0.1-2MM).

[0084] The guide ring 6 is fixed to the main bearing seat 34 by means of fasteners 7 (such as screws). It is worth noting that when the fasteners 7 are locked, the lower end surface of the pressure plate 8 is in close contact with the upper end surface of the guide ring 6.

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

[0086] With the preferred embodiment described above, the second elastic member 52 is secured between the guide ring 6 and the housing 1 via the pressure plate 8. The second elastic member 52 is in a tensioned state due to the interaction between the first conical surface 61 and the second conical surface 521, further buffering radial movement of the compression mechanism 2 and the guide ring 6. Furthermore, the second elastic member 52 with the second conical surface 521 is more easily positioned and installed.

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

[0088] With the above preferred solution, the second elastic component 52 is supported by the step surface 62 of the guide ring 6 , and the second elastic component 52 is more stable.

[0089] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that, Figure 6-8As shown, a plurality of upper motor mounting legs 361 and lower motor mounting legs 362 are respectively distributed at the upper and lower ends of the motor sleeve 36, and the upper motor mounting legs 361 and the lower motor mounting legs 362 both extend along the axial direction of the motor sleeve 36;

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

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

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

[0093] The upper end surface of the upper bearing seat mounting leg 341 is fixedly mounted with a guide ring 6 , and the lower end surface of the lower bearing seat mounting leg 342 is in contact with the upper end surface of the upper motor mounting leg 361 .

[0094] Adopting the above preferred scheme, installation is convenient and the connection between each component is firm.In some embodiments, the outer side of the upper bearing seat mounting leg 341 is close to the axis centerline of the main bearing seat 34.

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

[0096] The main bearing seat 34 has upper and lower bearing seat mounting legs 341 and 342 growing in the axial direction, and the leg ends have end faces perpendicular to the axis. The main bearing seat 34 is radially positioned and kept concentric with the motor sleeve 36 through a small step 343.

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

[0098] In order to further optimize the implementation effect of the present invention, in some other embodiments, the remaining characteristic technologies are the same, except that an elastic component three (not shown in the figure) is installed in the gap between the outer side surface of the main bearing seat 34 and the inner side surface of the shell 1.

[0099] With the above preferred solution, the elastic component 3 is further utilized to absorb the radial vibration of the compression mechanism 2. The structure and material of the elastic component 3 are similar to or the same as those of the elastic component 2 52.

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

[0101] By adopting the above preferred solution, the support plate 4 with an inverted U-shaped structure can support the driving mechanism 3 with good flexibility, thereby buffering the vibration of the driving mechanism 3 .

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

[0103] In the above embodiment, two fasteners 7 are used to respectively fix the lower bearing seat 35 to the motor housing 36 and to fix the lower bearing seat 35 to the support plate 4. In other embodiments, such as Figure 9-10 As shown, the upper end surface of the support plate 4 is fitted with the lower end surface of the motor sleeve 36 through an elastic component 51, and the lower end surface of the support plate 4 is fitted with the upper end surface of the lower bearing seat 35 through another elastic component, and a fastener 7 is used to fix the motor sleeve 36, the support plate 4, the lower bearing seat 35 and the two elastic components 51 together.

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

[0105] The above multiple implementations can be implemented in parallel.

[0106] In summary, the present invention designs a scroll compressor for the low-pressure side, employing a flexible support structure. Support plate 4 is fixed to the inner wall of housing 1, and drive mechanism 3 is mounted on the support surface of support plate 4 via elastic component 1 51. Axial vibrations generated by compression mechanism 2 and the shaft system are effectively absorbed by support plate 4 and elastic component 1 51. A gap exists between drive mechanism 3 and housing 1, and guide ring 6 is disposed with clearance fit outside the static scroll and fixed to main bearing seat 34. Elastic component 2 52 is disposed between guide ring 6 and housing 1 to absorb radial vibrations of compression mechanism 2 and guide ring 6. Therefore, the present invention effectively absorbs and buffers both radial and axial vibrations, enabling low-noise operation of the scroll compressor.

[0107] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "two ends", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0108] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0109] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A scroll compressor with a flexible support structure, comprising: a housing and a compression mechanism and a driving mechanism disposed in the housing; The compression mechanism includes: a fixed scroll and an orbiting scroll meshing with each other; The driving mechanism includes: a stator, a rotor, a crankshaft, a main bearing seat and a lower bearing seat, wherein the main bearing seat is used to support the shaft head of the crankshaft, and the lower bearing seat is used to support the shaft tail of the crankshaft; The driving mechanism is characterized in that the driving mechanism further comprises: a motor sleeve, the motor sleeve is arranged on the outer surface of the stator, and the two ends of the motor sleeve are fixedly connected to the main bearing seat and the lower bearing seat respectively, and there is a certain gap between the outer side surfaces of the main bearing seat, the motor sleeve, the lower bearing seat and the inner side surface of the housing; A support plate is installed at the lower part of the housing, the support plate is fixedly connected to the housing, and the driving mechanism is installed on the support surface of the support plate through an elastic component 1, and the elastic component 1 is used to offset the axial vibration of the scroll compressor; A guide ring is fixedly mounted on the upper end surface of the main bearing seat. The guide ring is sleeved on the outer surface of the static scroll with a clearance fit. There is a certain gap between the outer side surface of the guide ring and the inner side surface of the shell, and an elastic component 2 is installed in the gap. The elastic component 2 is used to offset the radial vibration of the compression mechanism.

2. The scroll compressor according to claim 1, wherein: A pressure plate is installed on the upper end surface of the guide ring, and a fastener passes through the through hole on the pressure plate and the through hole on the guide ring in sequence along the axial direction of the scroll compressor and extends into the installation groove on the main bearing seat; The pressing plate fixes the second elastic component between the guide ring and the shell.

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

4. The scroll compressor according to claim 3, wherein: A step surface is provided on the outer side surface of the guide ring, and the step surface is used to support the second elastic component.

5. The scroll compressor according to claim 1, wherein: A plurality of upper motor mounting legs and lower motor mounting legs are respectively distributed at the upper and lower ends of the motor sleeve, and the upper motor mounting legs and the lower motor mounting legs both extend along the axial direction of the motor sleeve; The upper end surface of the upper motor mounting leg is in contact with the lower end surface of the main bearing seat, and the lower end surface of the lower motor mounting leg is in contact with the upper end surface of the lower bearing seat.

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

7. The scroll compressor according to claim 1, wherein: An elastic component three is installed in the gap between the outer side surface of the main bearing seat and the inner side surface of the shell.

8. The scroll compressor according to claim 1, wherein: The support plate is an inverted U-shaped structure, and the outer side surface of the support plate is welded to the inner side surface of the shell.

9. The scroll compressor according to any one of claims 1 to 8, characterized in that: The upper end surface of the lower bearing seat is fitted with the lower end surface of the motor sleeve, and the two are fixedly connected by fasteners; The lower end surface of the lower bearing seat is fitted with the upper end surface of the support plate through an elastic component 1, and the two are fixedly connected by another fastener.

10. The scroll compressor according to any one of claims 1 to 8, characterized in that: The upper end surface of the support plate is fitted with the lower end surface of the motor sleeve through an elastic component, and the lower end surface of the support plate is fitted with the upper end surface of the lower bearing seat through another elastic component, and a fastener is used to fix the motor sleeve, the support plate, the lower bearing seat and the two elastic components together.

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