Rotary compressor

Abstract

The application discloses a rotary compressor, which comprises a shell assembly, a motor assembly and a pump body assembly, the shell assembly has an inner cavity, the shell assembly is provided with a support structure in the inner cavity; the motor assembly is located in the inner cavity and connected to the support structure, and a gap is formed between the motor assembly and the inner wall of the inner cavity; the pump body assembly is located in the inner cavity and connected to the support structure, and a gap is formed between the pump body assembly and the inner wall of the inner cavity. Since the motor assembly and the pump body assembly are connected to the support structure, the motor assembly and the pump body assembly do not directly contact the shell assembly, the vibration of the shell assembly caused by the swing frequency of the pump body assembly and the breathing mode frequency of the motor assembly can be improved, the vibration of the shell assembly of the compressor and the radiation noise can be improved, and the working noise of the compressor is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a rotary compressor. Background Art

[0002] In the related art, the pump body assembly of the rotary compressor is driven by the motor assembly and has a periodic suction-compression-exhaust characteristic. The pump body assembly and the motor assembly are usually directly connected to the casing, so that the vibration is transmitted to the casing and radiates noise to the outside world, resulting in a relatively large operating noise of the compressor, which needs to be improved. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a rotary compressor that can improve the vibration of the compressor housing, thereby reducing the operating noise of the compressor.

[0004] According to an embodiment of the present invention, a rotary compressor includes a shell assembly, a motor assembly and a pump body assembly, the shell assembly having an inner cavity, and the shell assembly is provided with a supporting structure located in the inner cavity; the motor assembly is located in the inner cavity and connected to the supporting structure, and a gap is formed between the motor assembly and the inner wall of the inner cavity; the pump body assembly is located in the inner cavity and connected to the supporting structure, and a gap is formed between the pump body assembly and the inner wall of the inner cavity.

[0005] The rotary compressor according to the embodiment of the present invention has at least the following beneficial effects: since the motor assembly and the pump body assembly are connected to the supporting structure, the motor assembly and the pump body assembly do not directly contact the housing assembly, which can improve the vibration of the housing assembly caused by the swing frequency of the pump body assembly and the breathing mode frequency of the motor assembly, thereby improving the vibration and radiation noise of the compressor housing assembly and reducing the operating noise of the compressor.

[0006] According to some embodiments of the present invention, a gap between the motor assembly and the inner wall of the inner cavity is greater than or equal to 0.1 mm, and a gap between the pump body assembly and the inner wall of the inner cavity is greater than or equal to 0.1 mm.

[0007] According to some embodiments of the present invention, the supporting structure includes a first bracket, the motor assembly is connected to an upper end of the first bracket, and the pump body assembly is connected to a lower end of the first bracket.

[0008] According to some embodiments of the present invention, the first bracket is provided with a plurality of circumferentially arranged support blocks, and the support blocks abut the motor assembly to support the motor assembly; or, the first bracket is provided with a plurality of circumferentially arranged positioning blocks, and the motor assembly is provided with positioning grooves that cooperate with the positioning blocks.

[0009] According to some embodiments of the present invention, the support structure further includes a second bracket, the second bracket is located above the motor assembly, and the motor assembly is connected to a lower end of the second bracket.

[0010] According to some embodiments of the present invention, the motor assembly includes a stator, and the stator is connected to the first bracket and the second bracket via fasteners.

[0011] According to some embodiments of the present invention, the first bracket and the second bracket are both provided with a plurality of circumferentially arranged support blocks, and the support blocks abut the motor assembly to support the motor assembly; or, the first bracket and the second bracket are both provided with a plurality of circumferentially arranged positioning blocks, and the motor assembly is provided with positioning grooves that cooperate with the positioning blocks.

[0012] According to some embodiments of the present invention, the first bracket includes a mounting cylinder, and the pump body assembly is connected to the mounting cylinder via a plurality of fasteners, wherein the plurality of fasteners are spaced apart along the circumference of the mounting cylinder.

[0013] According to some embodiments of the present invention, the shell assembly includes an upper shell, a main shell and a lower shell, the main shell includes a first shell segment and a second shell segment, the outer wall of the first bracket is provided with a first support ring, and the first shell segment and the second shell segment are respectively connected to the axial ends of the first support ring.

[0014] According to some embodiments of the present invention, a first gasket is provided between the first shell segment and the first support ring, and a second gasket is provided between the second shell segment and the first support ring.

[0015] According to some embodiments of the present invention, cavities are provided inside the first shell segment and the second shell segment.

[0016] According to some embodiments of the present invention, the cavity is filled with noise reduction filler.

[0017] According to some embodiments of the present invention, the noise reduction filler is damping particles or porous sound insulation cotton.

[0018] According to some embodiments of the present invention, the filling rate of the noise reduction filler in the cavity is 80% to 90%.

[0019] According to some embodiments of the present invention, the main housing further includes a third housing segment, the supporting structure further includes a second bracket, the motor assembly is connected to the lower end of the second bracket, a second support ring is provided on the outer wall of the second bracket, and the second housing segment and the third housing segment are respectively connected to the axial ends of the second support ring.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments with reference to the accompanying drawings, in which:

[0022] Figure 1 is a cross-sectional view of a rotary compressor according to some embodiments of the present invention;

[0023] Figure 2 for Figure 1 A local enlarged view of point A;

[0024] Figure 3 are cross-sectional views of rotary compressors according to other embodiments of the present invention;

[0025] Figure 4 for Figure 3 A local enlarged view of point A;

[0026] Figure 5 This is a schematic structural diagram of a first bracket in an embodiment of the present invention;

[0027] Figure 6 Schematic diagram of the structure of the first bracket, the motor assembly and the second bracket in an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the exploded view of the first bracket, the motor assembly and the second bracket in an embodiment of the present invention.

[0029] The accompanying figures are as follows:

[0030] Housing assembly 100 , inner cavity 101 , cavity 102 , upper housing 110 , main housing 120 , first housing segment 121 , second housing segment 122 , third housing segment 123 , lower housing 130 , noise reduction filler 140 ;

[0031] Motor assembly 200, stator 210, positioning slot 211, rotor 220;

[0032] Pump body assembly 300, cylinder 310, compression chamber 311, piston 320, rotating shaft 330;

[0033] Liquid storage tank 400, connecting pipe 410;

[0034] Support structure 500 , first bracket 510 , mounting tube 511 , support block 512 , positioning block 513 , first support ring 514 , second bracket 520 , second support ring 521 . DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0037] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting 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.

[0039] Rotary compressors are a type of compressor widely used in refrigeration equipment. Instead of converting the rotor's rotational motion into reciprocating motion, the motor directly drives the piston to rotate, compressing the refrigerant. Rotary compressors are particularly well-suited for small refrigeration equipment, particularly in household air conditioners.

[0040] In the related art, the motor assembly and pump assembly of the rotary compressor are directly installed on the inner wall of the shell. The vibration generated by the motor assembly and the pump assembly is transmitted to the shell, causing the shell to vibrate and radiate noise to the outside, resulting in a relatively large operating noise of the compressor, which needs to be improved.

[0041] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a rotary compressor that can improve the vibration of the shell and reduce the noise radiated to the outside.

[0042] The rotary compressor includes a housing assembly 100, a motor assembly 200, a pump body assembly 300 and a liquid storage tank 400. The housing assembly 100 has an inner cavity 101. The motor assembly 200 and the pump body assembly 300 are both arranged in the inner cavity 101. The pump body assembly 300 includes a cylinder 310, a piston 320 and a rotating shaft 330. The cylinder 310 has a compression chamber 311. The piston 320 is fixedly connected to one end of the rotating shaft 330 and is eccentrically arranged in the compression chamber 311. The motor assembly 200 includes a stator 210 and a rotor 220. The rotor 220 is fixedly connected to the other end of the rotating shaft 330. The stator 210 surrounds the outside of the rotor 220. The connecting pipe 410 of the liquid storage tank 400 is connected to the intake port of the cylinder 310. When the rotary compressor is running, the rotor 220 drives the shaft 330 to rotate, and the shaft 330 drives the piston 320 to rotate eccentrically in the compression chamber 311, thereby completing the continuous operation of suction, compression, and exhaust. Therefore, the rotary compressor can output high-pressure refrigerant gas.

[0043] It is understandable that during the operation of the rotary compressor, both the motor assembly 200 and the pump body assembly 300 vibrate, and the vibration is transmitted to the housing assembly 100 and radiates noise to the outside. In order to improve the operating noise of the rotary compressor, a support structure 500 is provided in the inner cavity 101 of the housing assembly 100, and the motor assembly 200 and the pump body assembly 300 are both mounted on the support structure 500. A gap is reserved between the motor assembly 200 and the inner wall of the inner cavity 101, and a gap is also reserved between the pump body assembly 300 and the inner wall of the inner cavity 101. Using the gap to separate the housing assembly 100 from the motor assembly 200 and the pump body assembly 300 helps to reduce the vibration of the motor assembly 200 and the pump body assembly 300 from being transmitted to the housing assembly 100.

[0044] It can be understood that since the motor assembly 200 and the pump body assembly 300 do not directly contact the shell assembly 100, the vibration of the shell assembly 100 caused by the swing frequency of the pump body assembly 300 and the breathing mode frequency of the motor assembly 200 can be improved, thereby reducing the vibration and radiation noise of the shell assembly 100 of the rotary compressor, reducing the working noise of the rotary compressor, and helping to improve the user experience of refrigeration equipment using rotary compressors and enhance product competitiveness.

[0045] It is understood that the gap between the motor assembly 200 and the inner wall of the inner cavity 101 is 0.1 mm or greater. A gap of at least 0.1 mm prevents the motor assembly 200 from contacting the inner wall of the inner cavity 101 during operation, thereby reducing vibration transmission. The gap between the pump body assembly 300 and the inner wall of the inner cavity 101 is 0.1 mm or greater. A gap of at least 0.1 mm prevents the pump body assembly 300 from contacting the inner wall of the inner cavity 101 during operation, thereby reducing vibration transmission. It is understood that during operation, the vibration amplitude of the motor assembly 200 and the pump body assembly 300 will not reach 0.1 mm because the motor assembly 200 and the pump body assembly 300 are highly precise, and a gap of at least 0.1 mm is sufficient to accommodate the vibration amplitude. Conversely, if the vibration amplitude of the motor assembly 200 and the pump body assembly 300 is greater than 0.1 mm, it indicates that the motor assembly 200 and the pump body assembly 300 may be faulty, which may cause problems such as stalling.

[0046] Reference Figure 1 and Figure 2 As will be understood, support structure 500 includes a first bracket 510, with motor assembly 200 connected to the upper end of first bracket 510 and pump assembly 300 connected to the lower end of first bracket 510. Utilizing a single first bracket 510 to simultaneously mount motor assembly 200 and pump assembly 300 reduces the number of connections between housing assembly 100, motor assembly 200, and pump assembly 300, thereby reducing vibration transmission, vibration and radiated noise from housing assembly 100, and the operating noise of the compressor.

[0047] Reference Figure 1 and Figure 2 It is understood that the first bracket 510 includes a mounting tube 511, which is located at the lower end of the first bracket 510. The cylinder 310 of the pump body assembly 300 is connected to the mounting tube 511 via a plurality of fasteners (not shown in the figure), which are spaced apart along the circumference of the mounting tube 511. Considering that a through hole is required in the middle of the first bracket 510 for the rotating shaft 330 of the pump body assembly 300 to pass through, an annular mounting tube 511 is provided at the lower end of the first bracket 510, and a plurality of circumferentially distributed fasteners are used to secure the cylinder 310 to avoid interference with the rotating shaft 330. Moreover, the annular mounting tube 511 and the cylinder 310 are more evenly connected, resulting in a more reliable structure.

[0048] It is understood that the fasteners can be bolts. Threaded holes are provided on the lower end surface of the mounting tube 511, and through holes corresponding to the threaded holes are provided around the periphery of the cylinder 310. The bolts pass through the through holes and then screw into the threaded holes to secure the cylinder 310. This provides a simple structure and easy assembly and disassembly. Of course, the fasteners can also be other forms such as rivets and pins.

[0049] The upper end of the first bracket 510 may be provided with a plurality of circumferentially spaced support blocks 512, which are used to support the motor assembly 200. Furthermore, the support blocks 512 and the stator 210 may be fixedly connected by fasteners. Threaded holes are provided on the upper end surface of the support blocks 512, and through holes corresponding to the threaded holes are provided around the periphery of the stator 210. Bolts are passed through the through holes and then screwed into the threaded holes to secure the stator 210. This provides a simple structure and easy assembly and disassembly. Of course, other fasteners, such as rivets and pins, may also be used.

[0050] Alternatively, the upper end of the first bracket 510 may be provided with a plurality of circumferentially spaced positioning blocks 513, which are used to position the motor assembly 200. A positioning groove 211 is provided on the outer periphery of the stator 210 of the motor assembly 200. The positioning block 513 is snapped into the positioning groove 211 to limit the position of the motor assembly 200, which is beneficial to improving the coaxiality of the motor assembly 200 and the first bracket 510, and accurately forming a gap between the motor assembly 200 and the inner wall of the inner cavity 101.

[0051] Reference Figure 1 and Figure 5 Of course, the upper end of the first bracket 510 can also be provided with a plurality of circumferentially spaced support blocks 512 and a plurality of circumferentially spaced positioning blocks 513, wherein the plurality of support blocks 512 and the plurality of positioning blocks 513 are arranged in a staggered manner, wherein the support blocks 512 are used to support the motor assembly 200, and the positioning blocks 513 are used to position the motor assembly 200. A positioning groove 211 is provided on the outer periphery of the stator 210 of the motor assembly 200, and the positioning blocks 513 are snapped into the positioning groove 211 to limit the position of the motor assembly 200, which is conducive to improving the coaxiality of the motor assembly 200 and the first bracket 510, and accurately forming the gap between the motor assembly 200 and the inner wall of the inner cavity 101. In addition, the support block 512 and the stator 210 can be fixedly connected by fasteners, a threaded hole is provided on the upper end surface of the support block 512, and a through hole corresponding to the threaded hole is provided on the periphery of the stator 210. The stator 210 can be fixed by bolts passing through the through hole and then screwed into the threaded hole. The structure is simple and easy to assemble and disassemble.

[0052] Reference Figure 1As will be understood, the housing assembly 100 includes an upper housing 110, a main housing 120, and a lower housing 130. The upper and lower housings 110 and 130 are connected by a metal plate to the upper and lower ends of the main housing 120. The main housing 120 includes a first housing segment 121 and a second housing segment 122. A first support ring 514 is provided on the outer wall of the first bracket 510. The first housing segment 121 is located below the first support ring 514, and the second housing segment 122 is located above the first support ring 514. The first and second housing segments 121 and 122 cooperate to clamp the first support ring 514, thereby securing the first bracket 510. This provides a stable structure and allows the first bracket 510 to stably support the motor assembly 200 and the pump assembly 300. In the axial direction of the main housing 120, the first support ring 514 is relatively thin, which helps reduce the size of the connection structure between the first bracket 510 and the main housing 120 and reduces transmitted vibration.

[0053] It can be understood that in order to meet the sealing performance requirements, a first gasket (not shown in the figure) is provided between the first shell segment 121 and the first support ring 514, and a second gasket (not shown in the figure) is provided between the second shell segment 122 and the first support ring 514. The first gasket and the second gasket are used to achieve sealing and leak-proofing to prevent refrigerant leakage of the shell assembly 100.

[0054] As will be understood, the lower housing 130, the first housing segment 121, and the second housing segment 122 are fixedly connected by multiple long bolts. The lower end surface of the second housing segment 122 is provided with threaded holes, and both the lower housing 130 and the first housing segment 121 are provided with through-holes corresponding to the threaded holes. The long bolts pass through the through-holes of the lower housing 130 and the first housing segment 121 and then screw into the threaded holes of the second housing segment 122, thereby fixing the lower housing 130, the first housing segment 121, and the second housing segment 122 as a whole. Furthermore, the first and second gaskets are both provided with through-holes for the long bolts to pass through. The first and second gaskets also seal the outer periphery of the long bolts, further improving sealing. A metal sealing ring is used to seal the lower housing 130 and the first housing segment 121, providing excellent sealing performance and stability.

[0055] Similarly, the upper housing 110 and the second housing segment 122 are fixedly connected by multiple long bolts. The upper end surface of the second housing segment 122 is provided with threaded holes, and the upper housing 110 is provided with through holes corresponding to the threaded holes. The long bolts pass through the through holes of the upper housing 110 and then screw into the threaded holes of the second housing segment 122, thereby fixing the upper housing 110 and the second housing segment 122 as a whole. A metal sealing ring is used to seal the upper housing 110 and the second housing segment 122, providing excellent sealing performance and stability.

[0056] Reference Figure 1 and Figure 2It is understood that the first and second housing segments 121, 122 are provided with a cavity 102. The provision of the cavity 102 within the first and second housing segments 121, 122 helps to reduce the transmission of vibration and noise. The cavity 102 has the effect of reducing vibration and noise, further reducing the operating noise of the rotary compressor.

[0057] It is understandable that the cavity 102 can also be filled with a noise reduction filler 140 to absorb part of the noise and further reduce the noise transmitted outward through the main shell 120. At the same time, the noise reduction filler 140 can be used to reduce the transmission of vibration and reduce the radiation noise of the main shell 120.

[0058] It can be understood that the noise reduction filler 140 can be made of damping particles. When the operating noise of the motor assembly 200 and the pump body assembly 300 is transmitted to the damping particles, the damping particles can be excited and the noise can be reduced by the mutual collision of the damping particles; when the vibration of the motor assembly 200 and the pump body assembly 300 is transmitted to the damping particles, the damping particles are prompted to collide with each other in the cavity 102 or collide with the inner wall of the cavity 102, thereby reducing the vibration transmitted to the outer wall of the main shell 120 and reducing the outward radiation noise of the main shell 120.

[0059] It is understood that the noise-reducing filler 140 may also be porous sound-insulating cotton. When the operating noise of the motor assembly 200 and the pump assembly 300 is transmitted to the porous sound-insulating cotton in the cavity 102, the porous sound-insulating cotton absorbs the noise, reducing the noise transmitted to the outside world. When the vibration of the motor assembly 200 and the pump assembly 300 is transmitted to the porous sound-insulating cotton in the cavity 102, the porous sound-insulating cotton is caused to shake in the cavity 102 and collide with the inner wall of the cavity 102, thereby reducing the vibration transmitted to the outer wall of the main housing 120 and reducing the outward radiation noise of the main housing 120. The porous sound-insulating cotton in the cavity 102 can be integrated or granular, both of which can meet the requirements of absorbing noise and reducing vibration transmission.

[0060] Of course, the noise reduction filler 140 may also be made of other materials, such as metal or non-metal particles.

[0061] Reference Figure 1 It is understood that the noise reduction filler 140 does not completely fill the cavity 102. A portion of the cavity 102 is reserved for the noise reduction filler 140 to move, thereby achieving a better noise reduction effect. A fill rate of 80% to 90% is optimal, as this allows for the noise reduction filler 140 to move freely while still filling the majority of the cavity 102, resulting in a significant noise reduction effect.

[0062] Reference Figure 3 and Figure 4In other embodiments, the support structure 500 includes a first bracket 510 and a second bracket 520. The first bracket 510 is located above the pump body assembly 300, and the pump body assembly 300 is fixedly connected to the lower end of the first bracket 510; the second bracket 520 is located above the motor assembly 200, and the motor assembly 200 can be fixedly connected only to the lower end of the second bracket, and the mutual influence between the motor assembly 200 and the pump body assembly 300 is less; the motor assembly 200 can also be fixedly connected to the first bracket 510 and the second bracket 520 at the same time, which can better fix and support the motor assembly 200 and improve the structural stability and reliability.

[0063] Reference Figures 4 to 7 It can be understood that the stator 210 of the motor assembly 200 is connected to the first bracket 510 and the second bracket 520 by fasteners. The upper end of the first bracket 510 is provided with a plurality of circumferentially spaced support blocks 512 and a plurality of circumferentially spaced positioning blocks 513. The plurality of support blocks 512 and the plurality of positioning blocks 513 are arranged in a staggered manner, wherein the support blocks 512 are used to support the motor assembly 200, and the positioning blocks 513 are used to position the motor assembly 200. A positioning groove 211 is provided on the outer periphery of the stator 210 of the motor assembly 200. The positioning blocks 513 are snapped into the positioning groove 211 to limit the position of the motor assembly 200, which is conducive to improving the coaxiality of the motor assembly 200 and the first bracket 510, and accurately forming the gap between the motor assembly 200 and the inner wall of the inner cavity 101. In addition, the support block 512 and the stator 210 can be fixedly connected by fasteners. A threaded hole is set on the upper end surface of the support block 512, and a through hole corresponding to the threaded hole is set around the stator 210. The stator 210 can be fixed by passing the bolt through the through hole and then screwing it into the threaded hole. The structure is simple and easy to disassemble and assemble.

[0064] The second bracket 520 is also provided with a plurality of circumferentially spaced support blocks 512 and a plurality of circumferentially spaced positioning blocks 513 to support and fix the stator 210. Fixing the motor assembly 200 from the upper and lower sides by the first bracket 510 and the second bracket 520 is helpful to reduce the shaking of the motor assembly 200 and improve the operating stability.

[0065] Alternatively, the first bracket 510 and the second bracket 520 may both be provided with a plurality of circumferentially spaced support blocks 512 , and the motor assembly 200 may be supported by the support blocks 512 . The support blocks 512 and the stator 210 of the motor assembly 200 may be fixedly connected by fasteners.

[0066] Alternatively, both the first bracket 510 and the second bracket 520 may be provided with a plurality of circumferentially spaced positioning blocks 513, and a positioning groove 211 may be provided on the outer periphery of the stator 210 of the motor assembly 200. The positioning blocks 513 may be snapped into the positioning groove 211 to limit the position of the motor assembly 200, which is beneficial to improving the coaxiality of the motor assembly 200 and the first bracket 510, and accurately forming a gap between the motor assembly 200 and the inner wall of the inner cavity 101.

[0067] Reference Figure 3 and Figure 4 The main shell 120 is divided into three sections, including a first shell section 121, a second shell section 122 and a third shell section 123. The outer wall of the first bracket 510 is provided with a first support ring 514, the first shell section 121 is located at the lower side of the first support ring 514, and the second shell section 122 is located at the upper side of the first support ring 514. The first shell section 121 and the second shell section 122 cooperate to clamp the first support ring 514, thereby fixing the first bracket 510, and the structure is stable; the outer wall of the second bracket 520 is provided with a second support ring 521, the second shell section 122 is located at the lower side of the second support ring 521, and the third shell section 123 is located at the upper side of the second support ring 521. The second shell section 122 and the third shell section 123 cooperate to clamp the second support ring 521, thereby fixing the second bracket 520, and the structure is stable.

[0068] In the axial direction of the main housing 120 , the first support ring 514 and the second support ring 521 have relatively small thicknesses, which is beneficial for reducing the size of the connection structure between the first bracket 510 , the second bracket 520 and the main housing 120 and reducing the transmitted vibration.

[0069] It can be understood that a cavity 102 is provided inside the first shell segment 121, the second shell segment 122 and the third shell segment 123, and the cavity 102 is filled with a noise reduction filler 140. The noise reduction filler 140 is used to absorb part of the noise, further reducing the noise transmitted outward through the main shell 120. At the same time, the noise reduction filler 140 is used to reduce the transmission of vibration and reduce the radiation noise of the main shell 120.

[0070] The noise reduction filler 140 can be made of damping particles. When the operating noise of the motor assembly 200 and the pump assembly 300 is transmitted to the damping particles, it can excite the damping particles, and the noise is reduced through the mutual collision of the damping particles. When the vibration of the motor assembly 200 and the pump assembly 300 is transmitted to the damping particles, it causes the damping particles to collide with each other or with the inner wall of the cavity 102, thereby reducing the vibration transmitted to the outer wall of the main housing 120 and reducing the outward radiation noise of the main housing 120. The main housing 120 adopts a three-section structure, which is convenient for both loading the damping particles and installing the first bracket 510, the second bracket 520, the motor assembly 200 and the pump assembly 300, simplifying the assembly process and improving efficiency. The damping particles are filled in each cavity 102 of the main housing 120, and the damping particles in each cavity 102 have more space to move, which is conducive to noise reduction.

[0071] Noise-reducing filler 140 can also be made of porous sound-insulating cotton. When the operating noise of motor assembly 200 and pump assembly 300 is transmitted to the porous sound-insulating cotton in cavity 102, the porous sound-insulating cotton absorbs the noise, reducing the noise transmitted to the outside world. When the vibration of motor assembly 200 and pump assembly 300 is transmitted to the porous sound-insulating cotton in cavity 102, the porous sound-insulating cotton shakes within cavity 102 and collides with the inner wall of cavity 102, thereby reducing the vibration transmitted to the outer wall of main housing 120 and reducing the outward radiation noise of main housing 120. The porous sound-insulating cotton in cavity 102 can be integrated or granular, both of which can meet the requirements of absorbing noise and reducing vibration transmission.

[0072] It is understood that the noise reduction filler 140 does not completely fill the cavity 102. A portion of the cavity 102 is reserved for the noise reduction filler 140 to move, thereby achieving a better noise reduction effect. A fill rate of 80% to 90% of the cavity 102 with the noise reduction filler 140 is optimal. This allows for the noise reduction filler 140 to move freely while still filling the majority of the cavity 102, resulting in a significant noise reduction effect.

[0073] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the spirit of the present invention.

Claims

1. A rotary compressor, characterized in that include: A housing assembly having an inner cavity, wherein the housing assembly is provided with a support structure located in the inner cavity, wherein the support structure includes a first bracket, wherein the first bracket is provided with a first mounting surface facing upward and a second mounting surface facing downward; a motor assembly located in the inner cavity and connected to the upper end of the first bracket, wherein the outer peripheral bottom of the motor assembly is connected to the first mounting surface, and a gap is formed between the motor assembly and the inner wall of the inner cavity; a pump assembly located in the inner cavity and connected to the lower end of the first bracket, wherein the outer periphery of the pump assembly is connected to the second mounting surface, and a gap is defined between the pump assembly and the inner wall of the inner cavity; The shell assembly includes an upper shell, a main shell and a lower shell, the main shell includes a first shell segment and a second shell segment, the outer wall of the first bracket is provided with a first support ring, the first shell segment and the second shell segment are respectively connected to the axial ends of the first support ring, the first shell segment and the second shell segment are provided with a cavity inside, and the cavity is filled with noise reduction filler; the lower shell, the first shell segment and the second shell segment are fixedly connected by a plurality of bolts, the upper shell and the second shell segment are fixedly connected by a plurality of bolts, the upper shell, the lower shell and the first shell segment are all provided with through holes for the bolts to pass through, and the upper end face and the lower end face of the second shell segment are provided with threaded holes connected to the bolts.

2. The rotary compressor according to claim 1, wherein The gap between the motor assembly and the inner wall of the inner cavity is greater than or equal to 0.1 mm, and the gap between the pump body assembly and the inner wall of the inner cavity is greater than or equal to 0.1 mm.

3. The rotary compressor according to claim 1, wherein The first bracket is provided with a plurality of circumferentially arranged support blocks, the support blocks abut the motor assembly to support the motor assembly, and the upper end surface of the support block is set as the first mounting surface; or, the first bracket is provided with a plurality of circumferentially arranged positioning blocks, and the motor assembly is provided with a positioning groove that cooperates with the positioning block.

4. The rotary compressor according to claim 1, wherein The support structure further includes a second bracket, which is located above the motor assembly. The motor assembly is connected to the lower end of the second bracket.

5. The rotary compressor according to claim 4, characterized in that The motor assembly includes a stator, and the stator is connected to the first bracket and the second bracket via fasteners.

6. The rotary compressor according to claim 5, characterized in that The first bracket and the second bracket are both provided with a plurality of circumferentially arranged support blocks, the support blocks abut the motor assembly to support the motor assembly, and the upper end surface of the support block is set as the first mounting surface; or, the first bracket and the second bracket are both provided with a plurality of circumferentially arranged positioning blocks, and the motor assembly is provided with a positioning groove that cooperates with the positioning block.

7. The rotary compressor according to claim 1, wherein The first bracket includes a mounting cylinder, and the pump body assembly is connected to the mounting cylinder through a plurality of fasteners, and the plurality of fasteners are distributed at intervals along the circumference of the mounting cylinder.

8. The rotary compressor according to claim 1, wherein A first gasket is provided between the first shell segment and the first support ring, and a second gasket is provided between the second shell segment and the first support ring.

9. The rotary compressor according to claim 1, wherein The noise reduction filler is damping particles or porous sound insulation cotton.

10. The rotary compressor according to claim 9, wherein The filling rate of the noise reduction filler in the cavity is 80% to 90%.

11. The rotary compressor according to claim 1, wherein The main housing also includes a third housing segment, and the supporting structure also includes a second bracket. The motor assembly is connected to the lower end of the second bracket. A second support ring is provided on the outer wall of the second bracket. The second housing segment and the third housing segment are respectively connected to the axial ends of the second support ring.

Images