Valve reed, compressor, and vehicle

Abstract

A valve reed includes a plate body defining a slit. The slit extends through the plate body and divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, first swing arms, and second swing arms. The central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion. Each first swing arm is located between the peripheral sealing portion and the mounting portion, and has a first end connected to the peripheral sealing portion, and a second end connected to the mounting portion. Each second swing arm is located between the central sealing portion and the mounting portion, and has a first end connected to the central sealing portion, and a second end connected to the mounting portion.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims the benefits of and priorities to Chinese Patent Application No. 202510238058.8, filed on February 28, 2025, and Chinese Patent Application No. 202520347593.2, filed on February 28, 2025. The entire contents of the aforementioned patent applications are incorporated herein by reference for all purposes.TECHNICAL FIELD

[0002] This present technology relates to the field of compressors, and more particularly to a valve reed, a compressor, and a vehicle.BACKGROUND

[0003] A compressor, also referred to as an air pump, is a widely used air compression device. A compressor may be configured to supply compressed air to a pneumatic device, such as an air spring of vehicles, including an off-road vehicle and a sport utility vehicle (SUV). In some applications, a suction valve and a discharge valve of the compressor usually use valve reeds to open and close valve ports.SUMMARY

[0004] Disclosed are devices, systems and methods for a valve reed and a compressor including a valve reed, which can be employed by a vehicle.

[0005] In some aspects, a valve reed in accordance with the present technology includes a plate body. The plate body defining a slit extending through the plate body along a thickness direction of the plate body, and the slit divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, a plurality of first swing arms, and a plurality of second swing arms. The central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion. The plurality of first swing arms are located between the peripheral sealing portion and the mounting portion, a first end of each first swing arm is connected to the peripheral sealing portion, and a second end of each first swing arm is connected to the mounting portion. The plurality of second swing arms are located between the central sealing portion and the mounting portion, a first end of each second swing arm is connected to the central sealing portion, and a second end of each second swing arm is connected to the mounting portion.

[0006] In some aspects, a compressor in accordance with the present technology includes a cylinder, a piston assembly, a driving device, and a valve reed. The cylinder defines a compression chamber having an intake hole and a discharge hole. The piston assembly includes a piston and a piston frame, and the piston is arranged at least one end of the piston frame to compress gas in the compression chamber. The driving device is connected to the piston frame to drive the piston to move within the cylinder. The valve reed is arranged on the cylinder. The valve reed includes a plate body, the plate body defines a slit extending through the plate body along a thickness direction of the plate body, and the slit divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, a plurality of first swing arms, and a plurality of second swing arms; the central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion; the plurality of first swing arms are located between the peripheral sealing portion and the mounting portion, a first end of each first swing arm is connected to the peripheral sealing portion, and a second end of each first swing arm is connected to the mounting portion; the plurality of second swing arms are located between the central sealing portion and the mounting portion, a first end of each second swing arm is connected to the central sealing portion, and a second end of each second swing arm is connected to the mounting portion. One of the central sealing portion and the peripheral sealing portion is configured to open and close the intake hole, and the other of the central sealing portion and the peripheral sealing portion is configured to open and close the discharge hole.

[0007] In some aspects, a compressor in accordance with the present technology includes a cylinder, a piston assembly, a driving device, a communicating air passage, a first valve reed, and a second valve reed. The cylinder defines a first compression chamber and a second compression chamber, the first compression chamber has a first intake hole and a first discharge hole, and the second compression chamber has a second intake hole and a second discharge hole. The piston assembly includes pistons and a piston frame. The pistons are movably arranged in the cylinder and includes a first piston and a second piston. The first piston is arranged at a first end of the piston frame to compress gas in the first compression chamber, and the second piston is arranged at a second end of the piston frame to compress gas in the second compression chamber. The driving device is connected to the piston frame to drive the piston to move within the cylinder. The communicating air passage extends through the first piston, the piston frame, and the second piston to communicate the first compression chamber and the second compression chamber, and the communicating air passage forms the second intake hole. The first valve reed is arranged on the first piston and is a valve reed according to the first aspect, one of the central sealing portion and the peripheral sealing portion is configured to open and close the first intake hole, and the other of the central sealing portion and the peripheral sealing portion is configured to open and close the first discharge hole. The second valve reed is arranged on the second piston to open and close the second intake hole.

[0008] In some aspects, a vehicle includes a pneumatic device and a compressor. The compressor includes a cylinder having a compression chamber, in which the compression chamber has an intake hole and a discharge hole; a piston assembly including a piston and a piston frame, in which the piston is arranged at least one end of the piston frame and configured to compress gas in the compression chamber; a driving device connected to the piston frame to drive the piston to move within the cylinder; and a valve reed arranged on the cylinder, in which the valve reed includes a plate body, the plate body defines a slit extending through the plate body along a thickness direction of the plate body, and the slit divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, a plurality of first swing arms, and a plurality of second swing arms; the central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion; the plurality of first swing arms are located between the peripheral sealing portion and the mounting portion, a first end of each first swing arm is connected to the peripheral sealing portion, and a second end of each first swing arm is connected to the mounting portion; the plurality of second swing arms are located between the central sealing portion and the mounting portion, a first end of each second swing arm is connected to the central sealing portion, and a second end of each second swing arm is connected to the mounting portion; and one of the central sealing portion and the peripheral sealing portion is configured to open and close the intake hole, and the other of the central sealing portion and the peripheral sealing portion is configured to open and close the discharge hole; and the compressor is connected to the pneumatic device to supply compressed gas to the pneumatic device.

[0009] The subject matter described in this patent document can be implemented in specific ways that provide one or more of the following features.BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 shows a perspective view of an example embodiment of a valve reed in accordance with the present technology.

[0011] FIG. 2 shows a sectional view of an example embodiment of a valve reed in accordance with the present technology.

[0012] FIG. 3 shows an exploded view of an example embodiment of a single-stage compressor in accordance with the present technology.

[0013] FIG. 4 shows a partial sectional view of an example embodiment of a single-stage compressor in accordance with the present technology.

[0014] FIG. 5 shows a partial sectional view of an example embodiment of a single-stage compressor in accordance with the present technology, with a valve reed in a suction state.

[0015] FIG. 6 shows a partial sectional view of an example embodiment of a single-stage compressor in accordance with the present technology, with a valve reed in a discharge state.

[0016] FIG. 7 shows a partial sectional view of an example embodiment of a single-stage compressor in accordance with the present technology.

[0017] FIG. 8 shows a partial sectional view of an example embodiment of a single-stage compressor in accordance with the present technology, with a valve reed in a suction state.

[0018] FIG. 9 shows a partial sectional view of an example embodiment of a single-stage compressor in accordance with the present technology, with a valve reed in a discharge state.

[0019] FIG. 10 shows a schematic view of an example embodiment of a two-stage compressor in accordance with the present technology.

[0020] FIG. 11 shows a schematic view of an example embodiment of a two-stage compressor in accordance with the present technology.

[0021] FIG. 12 shows a schematic view of an example embodiment of a two-stage compressor in accordance with the present technology.

[0022] FIG. 13 shows a schematic view of an example embodiment of a two-stage compressor in accordance with the present technology.

[0023] FIG. 14 shows a perspective view of an example embodiment of a second valve reed in accordance with the present technology.

[0024] FIG. 15 shows a sectional view of an example embodiment of a second valve reed in accordance with the present technology.

[0025] FIG. 16 shows a sectional view of an example embodiment of a second valve reed in accordance with the present technology.

[0026] FIG. 17 shows a sectional view of an example embodiment of a driving device of a compressor in accordance with the present technology.

[0027] FIG. 18 shows an exploded view of an example embodiment of a driving device of a compressor in accordance with the present technology.

[0028] FIG. 19 shows a schematic view of an example embodiment of a crankshaft of a compressor in accordance with the present technology.

[0029] FIG. 20 shows a schematic view of an example embodiment of a vehicle in accordance with the present technology.DETAILED DESCRIPTION

[0030] Disclosed are devices, systems and methods for a valve reed and a compressor including a valve reed, which can be employed by a vehicle.

[0031] Conventionally, during the opening and closing process of the valve reeds, there are problems such as a slow response of the valve reeds, a gradual change in a flow area of the valve port, and a small flow area. In addition, in a conventional compressor, for instance, a suction valve reed and a discharge valve reed are provided separately from each other, which results in a large number of parts, inconvenience in assembly and disassembly, and a high cost. Thus, a multifunctional, simplified, and low cost valve reed is needed to overcome the problems and challenges with conventional valve reeds and compressors using the like.

[0032] A valve reed according to example embodiments of the present technology is described below in conjunction with the drawings.

[0033] FIGS. 1 to 20 show example embodiments of a valve reed 8 according to some example embodiments of the present technology. As depicted in FIG. 1, the valve reed 8 includes a plate body 81a. The plate body 81a defines a slit 82a, and the slit 82a extends through the plate body 81a along a thickness direction of the plate body 81a. The slit 82a divides the plate body 81a into a central sealing portion 831a, a mounting portion 84a, a peripheral sealing portion 832a, a plurality of first swing arms 851a, and a plurality of second swing arms 852a. The central sealing portion 831a, the mounting portion 84a, and the peripheral sealing portion 832a are concentric with each other. That is, a center of the central sealing portion 831a, a center of the mounting portion 84a, and a center of the peripheral sealing portion 832a coincide. The mounting portion 84a surrounds the central sealing portion 831a, and the peripheral sealing portion 832a surrounds the mounting portion 84a.

[0034] Both the first swing arms 851a and the second swing arms 852a are elastic arms. The first swing arms 851a have a substantially constant width along a length of the first swing arms 851a, and the second swing arms 852a have a substantially constant width along a length of the second swing arms 852a. The first swing arms 851a are located between the peripheral sealing portion 832a and the mounting portion 84a. A first end of each first swing arm 851a is connected to the peripheral sealing portion 832a, and a second end of each first swing arm 851a is connected to the mounting portion 84a. The second swing arms 852a are located between the central sealing portion 831a and the mounting portion 84a. A first end of each second swing arm 852a is connected to the central sealing portion 831a, and a second end of each second swing arm 852a is connected to the mounting portion 84a.

[0035] When the number of the plurality of first swing arms 851a is even, the plurality of first swing arms 851a are arranged in pairs. That is, the plurality of first swing arms 851a are divided into at least one pair, and two swing arms in the same pair are centrally symmetric to each other with respect to the center of the central sealing portion 831a, that is, one first swing arm 851a coincides with another first swing arm 851a after rotating 180 degrees.

[0036] When the number of the plurality of first swing arms 851a is odd, the plurality of first swing arms 851a are uniformly arranged around the center of the central sealing portion 831a along a circumferential direction of the sealing portion 831a. For example, if the number of the plurality of first swing arms 851a is N, where N is an odd number, one of two adjacent first swing arms 851a coincides with the other of the two adjacent first swing arms 851a after a rotation of 360 / N degrees around the center of the central sealing portion 831a.

[0037] Similarly, when the number of the plurality of second swing arms 852a is even, the plurality of second swing arms 852a are arranged in pairs, and two swing arms in the same pair are centrally symmetric to each other with respect to the center of the central sealing portion 831a. When the number of the plurality of second swing arms 852a is odd, the plurality of second swing arms 852a are uniformly arranged around the center of the central sealing portion 831a along the circumferential direction of the central sealing portion 831a.

[0038] For various example embodiments of the valve reed in accordance with the present technology, the plurality of swing arms are either centrally symmetric to each other or uniformly arranged along the circumferential direction, which improves a stress uniformity of the central sealing portion and the peripheral sealing portion, and enhances the uniformity of the valve reed opening and closing a valve port.

[0039] In some examples, a thickness T of the plate body 81a may be greater than or equal to 0.1 mm and less than or equal to 0.5 mm, such as 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.

[0040] The valve reed 8 may be a metal sheet, such as a stainless-steel sheet or an alloy sheet. In some examples, the valve reed 8 may also be a non-metallic plate, such as a highly flexible resin plate.

[0041] A width of the slit 82a should ensure that during the use of the valve reed 8, there is no interference between the first swing arms 851a, the peripheral sealing portion 832a, and the mounting portion 84a, as well as between the second swing arms 852a, the central sealing portion 831a, and the mounting portion 84a. In some examples, the width of the slit 82a may be greater than or equal to 1 mm and less than or equal to 4 mm, and a width H of the swing arms may be greater than or equal to 1.3 mm and less than or equal to 5 mm. If the swing arms are too narrow, it will cause fatigue deformation of the valve reed 8 after being used for a period of time; if the swing arms are too wide, it will affect the sensitivity of the sealing portion in opening and closing the valve port. The slit 82a may be formed by stamping a metal sheet. In other words, the valve reed 8 is integrally formed by stamping a metal sheet.

[0042] In some examples, as shown in FIGS. 1-2, the mounting portion 84a defines a plurality of mounting holes 841a, and the plurality of mounting holes 841a are uniformly arranged around the center of the central sealing portion 831a along the circumferential direction of the central sealing portion 831a. At least part of the mounting holes 841a is arranged close to the second ends of the first swing arms 851a and the second ends of the second swing arms 852a. This ensures the sealing reliability of the valve reed 8, and avoids irreversible bending of a connecting portion between the mounting portions 84a after the first swing arms 851a and the second swing arms 852a operate for a period of time, as well as prevents the swing arms from shifting and affecting the sealing effect of the sealing portions.

[0043] As shown in FIGS. 4-13, when the valve reed 8 is mounted in a compressor 1001, the valve reed 8 may be fixed at the valve ports by a pressure plate 17 and screws. One of the central sealing portion 831a and the peripheral sealing portion 832a faces a suction valve port, while the other of the central sealing portion 831a and the peripheral sealing portion 832a faces a discharge valve port. The central sealing portion 831a and the peripheral sealing portion 832a open and close the corresponding valve ports through translational movement.

[0044] In some examples, a flange surrounding the valve port is provided at the valve port. An end face of the flange forms a sealing surface for tightly fitting with the central sealing portion 831a and the peripheral sealing portion 832a, improving the sealing effect of the sealing portions on the valve port.

[0045] For example, as compared with a conventional valve reed in the related arts, the example embodiments of the valve reed according to the present technology can have a uniform opening height, a larger flow area at the same opening height, a smooth air flow, a lower air resistance, and a higher response speed of the valve reed. In addition, the swing arms are centrally symmetric to each other or uniformly arranged, so that the valve reed is stressed uniformly, which improves the sensitivity of the valve reed in opening and closing, reduces the fatigue of the valve reed after being used for a period of time, and prolongs the service life of the valve reed.

[0046] In some embodiments in accordance with the present technology, the widths of the first swing arms and the second swing arms are substantially constant, further improving the stress uniformity of the valve reed and the uniformity of the valve port in opening and closing, and further enhancing the response speed and sensitivity of the valve reed.

[0047] The valve reed according to example embodiments of the present technology has both suction and discharge functions. The sealing portion configured to open and close the suction valve port and the sealing portion configured to open and close the discharge valve port are integrally designed, so that the valve reed has a compact structure, the number of parts is reduced, the convenience of assembly, disassembly, and maintenance of the valve reed is improved, and the production cost is reduced.

[0048] A valve reed of some specific embodiments of the present technology is described below in conjunction with the drawings.

[0049] As shown in FIGS. 1-2, the valve reed 8 includes a plate body 81a. The plate body 81a is generally circular and may be made of a stainless steel. A thickness T of the plate body 81a may be 0.1 millimeters.

[0050] The plate body 81a defines a slit 82a, and the slit 82a extends through the plate body 81a along a thickness direction of the plate body 81a. The slit 82a includes three first slits 824a and two second slits 825a. The slits 82a divides the plate body 81a into a circular central sealing portion 831a, an annular mounting portion 84a, an annular peripheral sealing portion 832a, three arc-shaped first swing arms 851a, and two arc-shaped second swing arms 852a. The central sealing portion 831a, the mounting portion 84a, the peripheral sealing portion 832a, the first swing arms 851a, and the second swing arms 852a are all concentric with each other.

[0051] The mounting portion 84a surrounds the central sealing portion 831a, and the peripheral sealing portion 832a surrounds the mounting portion 84a. The first swing arms 851a are located between the peripheral sealing portion 832a and the mounting portion 84a. The three first swing arms 851a are uniformly arranged along a circumferential direction of the central sealing portion 831a. A first end of each first swing arm 851a is connected to the peripheral sealing portion 832a through a first connecting portion 86a, and a second end of each first swing arm 851a is connected to the mounting portion 84a through a second connecting portion 87a. The second swing arms 852a are located between the central sealing portion 831a and the mounting portion 84a. The two second swing arms 852a are centrally symmetric to each other with respect to a center of the central sealing portion 831a. A first end of each second swing arm 852a is connected to the central sealing portion 831a through a third connecting portion 88a, and a second end of each second swing arm 852a is connected to the mounting portion 84a through a fourth connecting portion 89a.

[0052] Each first slit 824a includes an arc-shaped first outer slit segment 8241a, an arc-shaped first inner slit segment 8242a, and a first transition slit segment 8243a connecting the first outer slit segment 8241a and the first inner slit segment 8242a. Each first swing arm 851a is located between the first outer slit segment 8241a of one first slit 824a and the first inner slit segment 8242a of another adjacent first slit 824a.

[0053] Each second slit 825a includes an arc-shaped second outer slit segment 8251a, an arc-shaped second inner slit segment 8252a, and a second transition slit segment 8253a connecting the second outer slit segment 8251a and the second inner slit segment 8252a. One second swing arm 852a is located between the second outer slit segment 8251a of one second slit 825a and the second inner slit segment 8252a of another second slit 825a, while another second swing arm 852a is located between the second inner slit segment 8252a of the one second slit 825a and the second outer slit segment 8251a of the another second slit 825a.

[0054] The mounting portion 84a defines a plurality of mounting holes 841a, and the plurality of mounting holes 841a are uniformly arranged along the circumferential direction of the central sealing portion 831a. As shown in FIGS. 4-13, the valve reed 8 is press-fitted at a valve port via a pressure plate 17.

[0055] In some embodiments, as shown in FIGS. 4-6, 10, and 12, the peripheral sealing portion 832a corresponds to a suction valve port to open and close this suction valve port, while the central sealing portion 831a corresponds to a discharge valve port to open and close this discharge valve port. In this case, the valve reed 8 implements peripheral intake and central discharge. In some examples, as shown in FIGS. 7-9, 11, and 13, the central sealing portion 831a corresponds to a suction valve port to open and close this suction valve port, while the peripheral sealing portion 832a corresponds to a discharge valve port to open and close this discharge valve port. In this case, the valve reed 8 implements central intake and peripheral discharge.

[0056] A compressor in accordance with the present technology is described below.

[0057] As shown in FIGS. 1 to 20, a compressor 1001 includes a cylinder 1, a piston assembly 2, a driving device 9, and a valve reed.

[0058] The cylinder 1 includes a cylinder block 11, and a cylinder cavity 101 is defined in the cylinder block 11.

[0059] The piston assembly 2 includes a piston 22 and a piston frame 21. The piston 22 is arranged on at least one end of the piston frame 21 and is typically rigidly connected to the piston frame 21. For example, the piston 22 may be formed integrally with the piston frame 21. The piston 22 is movably fitted in the cylinder cavity 101 to define a compression chamber 102 in the cylinder cavity 101. The compression chamber 102 has an intake hole 103 and a discharge hole 104.

[0060] The piston assembly 2 may include one piston 22 arranged on one end of the piston frame 21, with one cylinder cavity 101 and one compression chamber 102. In this case, the compressor 1001 is referred to as a single-stage compressor 10011. Alternatively, the piston assembly 2 may include two pistons 22 arranged on two ends of the piston frame 21 respectively, with two cylinder cavities 101 and two compression chambers 102. The two pistons 22 are usually different in size. One of the two compression chambers 102 may be referred to as a low-pressure compression chamber, and the other of the two compression chambers 102 may be referred to as a high-pressure compression chamber. In this case, the compressor 1001 is referred to as a two-stage compressor 10012.

[0061] The driving device 9 includes a motor 4 and a crankshaft 5. The motor 4 has a motor shaft 41, and the crankshaft 5 includes a main shaft portion 51 and an eccentric shaft portion 52. A first end of the eccentric shaft portion 52 is pivotally connected to a piston frame 21, and a second end of the eccentric shaft portion 52 is connected to the main shaft portion 51. The main shaft portion 51 is coaxially connected to the motor shaft 41, and a central axis of the eccentric shaft portion 52 is eccentric with respect to a central axis of the motor shaft 41. The motor 4 drives the piston frame 21 via the crankshaft 5 to drive the piston 22 to reciprocate in the cylinder 1.

[0062] The valve reed may be the valve reed 8 described in the above embodiments and may be provided on the cylinder 1. One of the central sealing portion 831a and the peripheral sealing portion 832a is configured to open and close a port of the intake hole 103, i.e., the suction valve port, while the other of the central sealing portion 831a and the peripheral sealing portion 832a is configured to open and close a port of the discharge hole 104, i.e., the discharge valve port.

[0063] During a suction process of the compression chamber 102, one of the central sealing portion 831a and the peripheral sealing portion 832a opens the suction valve port, and an airflow from the intake hole 103 enters the compression chamber 102 through the slit 82a of the valve reed 8. After a pressure in the compression chamber 102 gradually increases to a preset valve, one of the central sealing portion 831a and the peripheral sealing portion 832a closes the suction valve port, the other of the central sealing portion 831a and the peripheral sealing portion 832a opens the discharge valve port, and an airflow in the discharge hole 104 is discharged from the compression chamber 102 through the slit 82a of the valve reed 8.

[0064] In some examples, as shown in FIGS. 7-9 and 11, one intake hole 103 and a plurality of discharge holes 104 are provided. The plurality of discharge holes 104 are uniformly arranged around the intake hole 103. The central sealing portion 831a is configured to open and close the port of the intake hole 103, while the peripheral sealing portion 832a is configured to simultaneously open and close the ports of the plurality of discharge holes 104. Alternatively, as shown in FIGS. 4-6 and 10, one discharge hole 104 and a plurality of intake holes 103 are provided. The plurality of intake holes 103 are uniformly arranged around the discharge hole 104. The central sealing portion 831a is configured to open and close the port of the discharge hole 104, while the peripheral sealing portion 832a is configured to simultaneously open and close the ports of the plurality of intake holes 103.

[0065] For example, compared to a conventional compressor in the related art where a suction valve reed and a discharge valve reed are separately arranged, the example embodiments of the compressor according to the present technology utilize a single valve reed to achieve both opening and closing of the suction valve port and both opening and closing of the discharge valve port. This reduces the number of valve reeds and other mounting parts, thus resulting in a compact structure, higher convenience in assembly, disassembly and maintenance, and lower production costs.

[0066] A single-stage compressor according to some example embodiments of the present technology is described below, in conjunction with some of the drawings.

[0067] As shown in FIGS. 3-6, a single-stage compressor 10011 includes a cylinder 1, a piston assembly 2, a motor 4, a crankshaft 5, an air storage tank 6, and a valve reed.

[0068] The cylinder 1 includes a cylinder block 11, a cylinder liner 12, a cylinder head 13, an air chamber isolation sleeve 16, a pressure plate 17, and a sealing cover 18. The cylinder head 13 is mounted to an upper end of the cylinder block 11. For example, the cylinder head 13 is detachably connected to the cylinder block 11 via bolts. The cylinder head 13 has an intake port 113 and a discharge port 114, and an intake passage 111 communicating with the intake port 113 and a discharge passage 115 communicating with the discharge port 114 are defined in the cylinder head 13. The discharge port 114 of the cylinder head 13 communicates with the air storage tank 6. The air storage tank 6 may smooth the airflow, thus improving the operation quality and reliability of the compressor 1001.

[0069] The cylinder liner 12 is mounted in the cylinder head 13 and the cylinder block 11, and a cylinder cavity 101 is defined in the cylinder liner 12. The piston assembly 2 includes a piston frame 21 and one piston 22. The piston 22 is arranged at an upper end of the piston frame 21 and is movably arranged in the cylinder cavity 101 to define a compression chamber 102 in the cylinder cavity 101.

[0070] The air chamber isolation sleeve 16 is mounted in the cylinder head 13 and is located above the cylinder liner 12. The valve reed may be the valve reed 8 described in the above embodiments. The pressure plate 17 presses the valve reed 8 against the air chamber isolation sleeve 16. A plurality of threaded holes in the pressure plate 17 align with the plurality of mounting holes 841a on the valve reed 8, so that the valve reed 8 is detachably fastened to the air chamber isolation sleeve 16 via screws.

[0071] A center of the pressure plate 17 is provided with a discharge hole 104 communicating with the compression chamber 102. The central sealing portion 831a of the valve reed 8 is configured to open and close an upper port of the discharge hole 104 (i.e., the discharge valve port). The discharge valve port communicates with the discharge passage 115 after being opened. The air chamber isolation sleeve 16 is provided with a valve reed limiting plate 161, and the valve reed limiting plate 161 is located above the central sealing portion 831a to limit a translation range of the central sealing portion 831a. The air chamber isolation sleeve 16 has a plurality of intake holes 103 uniformly arranged around the discharge hole 104 and communicating with the compression chamber 102. The peripheral sealing portion 832a of the valve reed 8 is configured to open and close lower ports of the plurality of intake holes 103 (i.e., the suction valve ports). The suction valve ports communicate with the intake passage 111 after being opened.

[0072] The sealing cover 18 is mounted to a side of the cylinder block 11. The motor 4 is mounted to another side of the cylinder block 11. A motor shaft 41 of the motor 4 is pivotally connected to a lower end of the piston frame 21 via the crankshaft 5.

[0073] During operation of the single-stage compressor 10011 according to some example embodiments of the present according to some example embodiments of the present technology is described below, in conjunction with some of the drawings, the valve reed 8 implements peripheral intake and central discharge. The motor 4 drives the piston assembly 2 to move downward via the crankshaft 5. External air F enters the intake passage 111 through the intake port 113 and then flows into the plurality of intake holes 103. The peripheral sealing portion 832a translates downward to open the suction valve ports, thus allowing air to enter the compression chamber 102 from the intake holes 103. As shown in FIG. 5, when the piston assembly 2 reaches a bottom dead center, the piston assembly 2 turns to move upward, and the air is compressed in the compression chamber 102. Subsequently, the peripheral sealing portion 832a translates upward to close the suction valve ports, while the central sealing portion 831a translates upward until it contacts the valve reed limiting plate 161 to open the discharge valve port. The compressed air enters the discharge passage 115 through the discharge valve port and is finally discharged into the air storage tank 6 through the discharge port 114, as shown in FIG. 6. This cycle repeats continuously.

[0074] A single-stage compressor according to another example embodiment of the present technology is described below in conjunction with the drawings.

[0075] As shown in FIGS. 7-9, a single-stage compressor 10011 includes a cylinder 1, a piston assembly 2, a motor 4, a crankshaft 5, an air storage tank 6, and a valve reed.

[0076] A cylinder head 13 of the cylinder 1 has an intake port 113 and a discharge port 114 (not shown in the drawings), and an intake passage 111 communicating with the intake port 113 and a discharge passage 115 communicating with the discharge port 114 are defined in the cylinder head 13.

[0077] A cylinder liner 12, a pressure plate 17, and an air chamber isolation sleeve 16 are arranged in the cylinder head 13 in sequence from bottom to top, and a lower end of the cylinder liner 12 is located in a cylinder block 11 of the cylinder 1. The valve reed may be the valve reed 8 described in the above embodiments, and the valve reed 8 is press-fitted between the pressure plate 17 and the air chamber isolation sleeve 16.

[0078] A central through-hole of the cylinder liner 12 serves as an intake hole 103 communicating with a compression chamber 102. The central sealing portion 831a of the valve reed 8 is configured to open and close a lower port of the intake hole 103 (i.e., the suction valve port). The suction valve port communicates with the intake passage 111 after being opened.

[0079] The pressure plate 17 has a plurality of discharge holes 104 uniformly arranged around the intake hole 103 and communicating with the compression chamber 102. The peripheral sealing portion 832a of the valve reed 8 is configured to open and close upper ports of the plurality of discharge holes 104 (i.e., the discharge valve ports). The discharge valve ports communicate with the discharge passage 115 after being opened. An outer side of the air chamber isolation sleeve 16 is provided with an annular valve reed limiting plate 161, and the valve reed limiting plate 161 is located above the peripheral sealing portion 832a to limit a translation range of the peripheral sealing portion 832a.

[0080] During operation of the single-stage compressor 10011 according to this embodiment, the valve reed 8 implements central intake and peripheral discharge. Other aspects of the single-stage compressor 10011 in this embodiment are the same as those described in the above-mentioned embodiments, which will not be repeated here.

[0081] A two-stage compressor according to some example embodiments of the present technology is described below, in conjunction with some of the drawings.

[0082] As shown in FIGS. 10 and 17-19, a two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a driving device 9, and valve reeds.

[0083] As shown in FIG. 10, the cylinder 1 includes a cylinder block 11, a first cylinder head 131, a first valve plate 191, a first pressure plate 171, a second cylinder head 132, a second valve plate 192, and a second pressure plate 172. The cylinder block 11 has a first cylinder cavity 1011 and a second cylinder cavity 1012. The piston assembly 2 includes a piston frame 21, a first piston 221, and a second piston 222. The first piston 221 is arranged on a lower end of the piston frame 21 and the first piston 221 is movably fitted in the first cylinder cavity 1011 to define a first compression chamber 1021 in the first cylinder cavity 1011. The second piston 222 is arranged on an upper end of the piston frame 21, and the second piston 222 is movably fitted in the second cylinder cavity 1012 to define a second compression chamber 1022 in the second cylinder cavity 1012.

[0084] The valve reeds include a first valve reed 801a and a second valve reed 802a, both of the first valve reed 801a and the second valve reed 802a may be the valve reed 8 described in the above embodiments.

[0085] The first cylinder head 131, the first valve plate 191, the first valve reed 801a, and the first pressure plate 171 are sequentially connected from bottom to top and are arranged at a lower end of the cylinder block 11. The first cylinder head 131 has a first intake port 1131 and a first discharge port 1141. The first valve plate 191 defines a first intake passage 1111 communicating with the first intake port 1131 and a first discharge passage 1151 communicating with the first discharge port 1141. A center of the first pressure plate 171 is provided with a first discharge hole 1041 communicating with the first compression chamber 1021. The central sealing portion 831a of the first valve reed 801a is configured to open and close a lower port of the first discharge hole 1041 (i.e., a first discharge valve port). The first discharge valve port communicates with the first discharge passage 1151 after being opened. The first valve plate 191 defines a plurality of first intake holes 1031 uniformly arranged around the first discharge hole 1041 and communicating with the first compression chamber 1021. The peripheral sealing portion 832a of the first valve reed 801a is configured to open and close upper ports of the plurality of first intake holes 1031 (i.e., first suction valve ports). The first suction valve ports communicate with the first intake passage 1111 after being opened.

[0086] The second cylinder head 132, the second valve plate 192, the second valve reed 802a, and the second pressure plate 172 are sequentially connected from top to bottom and are arranged at an upper end of the cylinder block 11. The second cylinder head 132 has a second intake port 1132 and a second discharge port 1142, and a second intake passage 1112 communicating with the second intake port 1132 and a second discharge passage 1152 communicating with the second discharge port 1142 are defined in the second valve plate 192. A center of the second pressure plate 172 is provided with a second discharge hole 1042 communicating with the second compression chamber 1022. The central sealing portion 831a of the second valve reed 802a is configured to open and close an upper port of the second discharge hole 1042 (i.e., a second discharge valve port). The second discharge valve port communicates with the second discharge passage 1152 after being opened. The second valve plate 192 defines a plurality of second intake holes 1032 uniformly arranged around the second discharge hole 1042 and communicating with the second compression chamber 1022. The peripheral sealing portion 832a of the second valve reed 802a is configured to open and close lower ports of the plurality of second intake holes 1032 (i.e., second suction valve ports). The second suction valve ports communicate with the second intake passage 1112 after being opened.

[0087] The first discharge port 1141 communicates with the second intake port 1132 through a communicating air passage 201, and the communicating air passage 201 may be formed in the cylinder block 11 or by a separate bypass pipe.

[0088] During operation of the two-stage compressor 10012 of this embodiment, the valve reeds 8 implements peripheral intake and central discharge. The piston assembly 2 moves upward, external air F enters the first intake passage 1111 through the first intake port 1131 and then flows into the plurality of first intake holes 1031. The peripheral sealing portion 832a of the first valve reed 801a translates upward to open the first suction valve ports, thus allowing air to enter the first compression chamber 1021 through the first intake holes 1031. The piston assembly 2 reaches a top dead center and turns to move downward, and the air is compressed in the first compression chamber 1021. Subsequently, the peripheral sealing portion 832a of the first valve reed 801a translates downward to close the first suction valve ports, and the central sealing portion 831a of the first valve reed 801a translates downward to open the first discharge valve port. The compressed air enters the first discharge passage 1151 through the first discharge valve port, and then flows from the first discharge port 1141 through the communicating air passage 201 into the second intake port 1132.

[0089] The air compressed from the first compression chamber 1021 enters the plurality of second intake holes 1032 through the second intake passage 1112. The peripheral sealing portion 832a of the second valve reed 802a translates downward to open the second suction valve ports, thus allowing air to enter the second compression chamber 1022 through the second intake holes 1032. After the piston assembly 2 reaches a bottom dead center, the piston assembly 2 turns to move upward again, and the air is compressed again in the second compression chamber 1022. Subsequently, the peripheral sealing portion 832a of the second valve reed 802a translates upward to close the second suction valve ports, and the central sealing portion 831a of the second valve reed 802a translates upward to open the second discharge valve port. The twice-compressed air then enters the second discharge passage 1152 through the second discharge valve port and is finally discharged through the second discharge port 1142. For example, the twice-compressed air is discharged into a dryer for drying, and the dried gas is supplied to a compressed gas utilization device. This cycle repeats continuously.

[0090] A middle portion of the piston frame 21 is provided with a sliding groove 231, a sliding block 24 is arranged in the sliding groove 231. The driving device 9 includes a planetary reduction assembly 3, a motor 4, and a crankshaft 5. The motor 4 has a motor shaft 41. The motor shaft 41 is pivotally connected to the sliding block 24 via the planetary reduction assembly 3 and the crankshaft 5. The planetary reduction assembly 3 has a high reduction ratio, and the motor 4 may be a high-speed motor. For example, a rotation speed of the motor 4 is greater than 4000 rpm. In some examples, the rotation speed of the motor 4 is greater than 8000 rpm. This results in a small required space, thus reducing the overall size and weight of the two-stage compressor 10012.

[0091] In some embodiments of the present technology, by adopting the combination of the high-speed motor and the planetary reduction assembly, the two-stage compressor may quickly respond to load changes while ensuring the stability and accuracy.

[0092] Compared with conventional reducers, the planetary reduction assembly has a high transmission efficiency, which may not only reduce the power consumption required by the motor, reducing the energy consumption of the two-stage compressor, but also improve a working efficiency of the two-stage compressor, particularly suitable for automotive compressors.

[0093] As shown in FIGS. 17 and 18, the motor 4 includes the motor shaft 41, a motor housing 42, a motor rear end cover 43, a rotor 44, and a stator 45. A rear end of the motor housing 42 has an opening, another end of the motor housing 42 has a hole for the motor shaft 41 to pass through, and a rotor front bearing 46 is provided in this hole. The motor rear end cover 43 is detachably mounted at the opening of the motor housing 42 through bolts. The motor rear end cover 43 has a groove, and a rotor rear bearing 47 is provided in this groove. The motor shaft 41 is connected to the rotor 44, a part of the motor shaft 41 passing through the motor housing 42 engages with the rotor front bearing 46, and an end of the motor shaft 41 located in the motor housing 42 engages with the rotor rear bearing 47.

[0094] As shown in FIGS. 17 and 18, the planetary reduction assembly 3 includes an inner gear ring 31, a planet carrier 32, a sun gear 33, and a plurality of planet gears 34. The planet gears 34 are rotatably arranged on the planet carrier 32 through planet gear shafts 35. The sun gear 33 is arranged on the motor shaft 41 of the motor 4, the inner gear ring 31 is connected to the motor housing 42 of the motor 4, the planet gears 34 are meshed with the sun gear 33 and the inner gear ring 31, and the crankshaft 5 is connected to the planet carrier 32.

[0095] The inner gear ring 31 is configured as a fixed gear of the planetary reduction assembly 3. The inner gear ring 31 includes a cylindrical body 311 and an annular boss 312. The annular boss 312 is arranged on an inner circumferential wall of the cylindrical body 311, and inner teeth are formed on an inner circumferential wall surface of the annular boss 312. The annular boss 312 defines a mating hole 301 within the cylindrical body 311, and the mating hole 301 is located at an end of the cylindrical body 311 adjacent to the motor 4. An end of the motor housing 42 is provided with a mating portion 401 with a reduced diameter, and the mating portion 401 is fitted in the mating hole 301. An end of the cylindrical body 311 is abutted against an end of the motor housing 42, and an outer circumferential surface of the cylindrical body 311 is flush with an outer circumferential surface of the motor housing 42.

[0096] Through the tight fit between the mating hole 301 and the mating portion 401, a spacing between the planetary reduction assembly 3 and the motor 4 is reduced, structural compactness is improved, and overall volume and occupied space are reduced, further reducing the size of the two-stage compressor 10012. In addition, the outer circumferential surface of the cylindrical body 311 is flush with the outer circumferential surface of the motor housing 42, which also improves an overall visual effect. Further, a sealing ring 48 or other sealing elements may be provided between the mating hole 301 and the mating portion 401 to improve a sealing performance between the planetary reduction assembly 3 and the motor 4.

[0097] As shown in FIG. 18, an end face of the planet carrier 32 facing away from the crankshaft 5 (i.e., a right end face in FIG. 18) is provided with an assembly groove 321, a rear bearing 322 is mounted in the assembly groove 321, and an end of the motor shaft 41 extending out of the motor housing 42 engages with the rear bearing 322.

[0098] The motor shaft 41 drives the sun gear 33 to rotate around a central axis X1, and the central axis X1 is a common central axis of the motor shaft 41, the sun gear 33, and the planet carrier 32. The planet gears 34 revolve around the central axis X1 and simultaneously rotate about central axes of the planet gear shafts 35, so that the planet carrier 32 rotates around the central axis X1.

[0099] In some examples, teeth of the inner gear ring 31 and the planet gears 34 are helical teeth, which may reduce speed, increase torque, and reduce noise.

[0100] As shown in FIGS. 17 to 19, the crankshaft 5 includes a main shaft portion 51 and an eccentric shaft portion 52. An end of the main shaft portion 51 is connected to the planet carrier 32. A central axis of the main shaft portion 51 is coaxial with the common central axis X1 of the planet carrier 32, the inner gear ring 31, and the motor shaft 41, which is referred to as the central axis X1 in the following description. The cylinder block 11 is provided with a front bearing 112, and the main shaft portion 51 engages with the front bearing 112.

[0101] In some examples, the main shaft portion 51 and the planet carrier 32 may be integrally formed, improving the overall strength and durability of the crankshaft 5, reducing assembly and maintenance workload for the crankshaft 5, improving structural compactness, reducing overall volume and occupied space, and further reducing the size of the two-stage compressor 10012.

[0102] The main shaft portion 51 has an assembly hole 511, an end of the eccentric shaft portion 52 is fitted in the assembly hole 511, and another end of the eccentric shaft portion 52 extends out of the assembly hole 511. A central axis X2 of the eccentric shaft portion 52 is eccentric with respect to the central axis X1 of the main shaft portion 51, and the another end of the eccentric shaft portion 52 is pivotally connected to the sliding block 24 in the piston frame 21.

[0103] Since the piston assembly 2 and the eccentric shaft portion 52 are eccentrically arranged relative to the main shaft portion 51, the crankshaft 5 will generate unbalanced forces during rotation. For this reason, the main shaft portion 51 is provided with a balance weight 53 to reduce or eliminate vibrations caused by the unbalance of the crankshaft 5, thus improving operational stability and reliability of the crankshaft 5, and reducing noise generated by the vibrations of the crankshaft 5.

[0104] A two-stage compressor according to another example embodiment of the present technology is described below, in conjunction with some of the drawings.

[0105] As shown in FIGS. 11 and 17-19, a two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a driving device 9, and a valve reed.

[0106] As shown in FIG. 11, the cylinder 1 includes a cylinder block 11, a first cylinder head 131, a first valve plate 191, a second cylinder head 132, and a second valve plate 192. The cylinder block 11 has a first cylinder cavity 1011 and a second cylinder cavity 1012. The piston assembly 2 includes a piston frame 21, a first piston 221, and a second piston 222. The first piston 221 is movably fitted in the first cylinder cavity 1011 to define a first compression chamber 1021 in the first cylinder cavity 1011, and the second piston 222 is movably fitted in the second cylinder cavity 1012 to define a second compression chamber 1022 in the second cylinder cavity 1012.

[0107] The valve reed includes a first valve reed 801a and a second valve reed 802a, both of the first valve reed 801a and the second valve reed 802a may be the valve reed 8 described in the above embodiments.

[0108] The first cylinder head 131, the first valve reed 801a, and the first valve plate 191 are sequentially connected from bottom to top and are arranged at a lower end of the cylinder block 11. A center of the first cylinder head 131 is provided with a first intake hole 1031 communicating with the first compression chamber 1021. The central sealing portion 831a of the first valve reed 801a is configured to open and close an upper port of the first intake hole 1031 (i.e., a first suction valve port). The first valve plate 191 defines a plurality of first discharge holes 1041 uniformly arranged around the first intake hole 1031 and communicating with the first compression chamber 1021. The peripheral sealing portion 832a of the first valve reed 801a is configured to open and close lower ports of the plurality of first discharge holes 1041 (i.e., first discharge valve ports). The first cylinder head 131 has a first discharge port 1141. A first discharge passage 1151 communicating with the first discharge port 1141 is defined between the first valve plate 191 and the first cylinder head 131. The first discharge valve ports communicate with the first discharge passage 1151 after being opened.

[0109] The second cylinder head 132, the second valve reed 802a, and the second valve plate 192 are sequentially connected from top to bottom and are arranged at an upper end of the cylinder block 11. A center of the second cylinder head 132 has a second intake hole 1032 communicating with the second compression chamber 1022. The central sealing portion 831a of the second valve reed 802a is configured to open and close a lower port of the second intake hole 1032 (i.e., a second suction valve port). The second valve plate 192 has a plurality of second discharge holes 1042 uniformly arranged around the second intake hole 1032 and communicating with the second compression chamber 1022. The peripheral sealing portion 832a of the second valve reed 802a is configured to open and close upper ports of the plurality of second discharge holes 1042 (i.e., second discharge valve ports). The second cylinder head 132 has a second discharge port 1142. A second discharge passage 1152 communicating with the second discharge port 1142 is defined between the second valve plate 192 and the second cylinder head 132. The second discharge valve ports communicate with the second discharge passage 1152 after being opened. The first discharge port 1141 communicates with the second intake hole 1032 via a communicating air passage 201.

[0110] During operation of the two-stage compressor 10012 of this embodiment, the valve reeds 8 implement central intake and peripheral discharge. Other aspects of the two-stage compressor 10012 in this embodiment may be the same as those described in the above-mentioned embodiments, which will not be repeated here.

[0111] A two-stage compressor according to another example embodiment of the present technology is described below, in conjunction with some of the drawings.

[0112] As shown in FIG. 12 and FIGS. 14-19, a two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a driving device 9, a first valve reed 801a, and a third valve reed 802b.

[0113] The cylinder 1 includes a cylinder block 11. A first cylinder cavity 1011 and a second cylinder cavity 1012 are defined in the cylinder block 11.

[0114] The piston assembly 2 includes a piston frame 21, a first piston 221, and a second piston 222. The first piston 221 is movably fitted in the first cylinder cavity 1011 to define a first compression chamber 1021 in the first cylinder cavity 1011, and the second piston 222 is movably fitted in the second cylinder cavity 1012 to define a second compression chamber 1022 in the second cylinder cavity 1012.

[0115] The driving device 9 is connected to the piston frame 21 and is configured to drive the pistons 22 to move in the cylinder cavities 101. Other aspects of the driving device 9 in this embodiment may be the same as those of the above-mentioned embodiments, which will not be repeated here.

[0116] The cylinder block 11 has an intake port 113 and defines an intake passage 111 communicating with the intake port 113. The cylinder block 11 has a second discharge hole 1042 communicating with the second compression chamber 1022, and an exhaust valve 15 is arranged at the second discharge hole 1042. The first compression chamber 1021 and the second compression chamber 1022 are communicated through a communicating air passage 201 that extends through the first piston 221, the piston frame 21, and the second piston 222. A first discharge hole 1041 is provided at a center of the first piston 221, and a first discharge passage 1151 communicating with the first discharge hole 1041 is defined in the first piston 221. The first compression chamber 1021 is communicated with the communicating air passage 201 through the first discharge hole 1041 and the first discharge passage 1151. The first piston 221 is provided with a plurality of first intake holes 1031 surrounding the first discharge hole 1041, and the intake passage 111 communicates with the first compression chamber 1021 through the plurality of first intake holes 1031. A part of the communicating air passage 201 that extends through the second piston 222 form a second intake hole 1032.

[0117] The first valve reed 801a may be the valve reed 8 described in the above embodiments, which has both intake and discharge functions. The first valve reed 801a is mounted on the first piston 221 via a pressure plate 17. The central sealing portion 831a of the first valve reed 801a is configured to open and close an upper port of the first discharge hole 1041 (i.e., a first discharge valve port), and the peripheral sealing portion 832a of the first valve reed 801a is configured to open and close lower ports of the plurality of first intake holes 1031 (i.e., first suction valve ports).

[0118] The third valve reed 802b is arranged on the second piston 222. A sealing portion 83b of the third valve reed 802b is configured to open and close an upper port of the second intake hole 1032 (i.e., a second suction valve port). The third valve reed 802b may be referred to as an intake valve reed, which has an intake function.

[0119] In some examples, as shown in FIGS. 14-16, the third valve reed 802b includes a valve reed body 81b. The valve reed body 81b defines a slit 82b, and the slit 82b extends through the valve reed body 81b along a thickness direction of the valve reed body 81b. The slit 82b divides the valve reed body 81b into the sealing portion 83b, a mounting portion 84b, and a plurality of swing arms 85b. The sealing portion 83b and the mounting portion 84b are concentric with each other, that is, a center of the sealing portion 83b coincides with a center of the mounting portion 84b, and the mounting portion 84b is arranged around the sealing portion 83b.

[0120] Each swing arm 85b is an elastic arm, and the swing arm 85b has a generally constant width in a length direction of the swing arm 85b. A first end of the swing arm 85b is connected to the sealing portion 83b, and a second end of the swing arm 85 is connected to the mounting portion 84b.

[0121] When the number of the plurality of swing arms 85b is even, the plurality of swing arms 85b are arranged in pairs, that is, the plurality of swing arms 85b are divided into at least one pair. Two swing arms 85b in the same pair are centrally symmetric to each other with respect to the center of the sealing portion 83b, that is, one swing arm 85b coincides with another swing arm 85b after rotating 180 degrees. When the number of the plurality of swing arms 85b is odd, the plurality of swing arms 85b are uniformly arranged around the center of the sealing portion 83b along a circumferential direction of the sealing portion 83b. For example, the number of the plurality of swing arms 85b is N, in which N is an odd number, and among two adjacent swing arms 85b, one swing arm 85b coincides with the other swing arm 85b after rotating 360 / N degrees around the center of the sealing portion 83b.

[0122] In some specific examples, as shown in FIGS. 14 and 15, the sealing portion 83b is circular, and the mounting portion 84b is annular and surrounds the sealing portion 83b. The swing arm 85b is arc-shaped. Two swing arms 85b are provided, and centrally symmetric to each other with respect to the center of the sealing portion 83b. The swing arm 85b is connected to the sealing portion 83b through a first connecting portion 86b and connected to the mounting portion 84b through a second connecting portion 87b.

[0123] Two slits 82b are provided, and each slit 82b includes an outer slit segment 821b, an inner slit segment 822b, and a connecting slit segment 823b connecting the outer slit segment 821b and the inner slit segment 822b. As shown in FIG. 15, one swing arm 85b is located between the outer slit segment 821b of one slit 82b and the inner slit segment 822b of another slit 82b, and another swing arm 85b is located between the inner slit segment 822b of the one slit 82b and the outer slit segment 821b of the another slit 82b.

[0124] The outer slit segment 821b and the inner slit segment 822b each are arc-shaped, and the connecting slit segment 823b includes a plurality of arc segments with different protruding directions and smoothly connected to each other. Central angles θ of the inner slit segment 822b and the outer slit segment 821b are equal, and in some examples, the central angle θ is greater than or equal to 120 degrees and less than or equal to 150 degrees. In embodiments shown in FIGS. 14 and 15, the central angle θ is 120 degrees.

[0125] In other specific examples, as shown in FIG. 16, the sealing portion 83b is circular, and the mounting portion 84b is annular and surrounds the sealing portion 83b. The swing arm 85b is arc-shaped. Three swing arms 85b are provided and are uniformly arranged around the center of the sealing portion 83b along the circumferential direction of the sealing portion 83b. The swing arm 85b is connected to the sealing portion 83b through a first connecting portion 86b and connected to the mounting portion 84b through a second connecting portion 87b.

[0126] Three slits 82b are provided, and each slit 82b includes an outer slit segment 821b, an inner slit segment 822b, and a connecting slit segment 823b connecting the outer slit segment 821b and the inner slit segment 822b. As shown in FIG. 16, each swing arm 85b is located between the outer slit segment 821b of one slit 82b and the inner slit segment 822b of another adjacent slit 82b. Both the outer slit segment 821b and the inner slit segment 822b are arc-shaped, and central angles θ of the inner slit segment 822b and the outer slit segment 821b are equal, and in some examples, the central angle θ is greater than or equal to 60 degrees and less than or equal to 90 degrees.

[0127] During operation of the two-stage compressor 10012 of this embodiment, the first valve reed 801a implements peripheral intake and central discharge. The piston assembly 2 moves upward, external air F enters the intake passage 111 through the intake port 113 and then flows into the plurality of first intake holes 1031. The peripheral sealing portion 832a of the first valve reed 801a translates downward to open the first suction valve ports, thus allowing air to enter the first compression chamber 1021 through the first intake holes 1031. After the piston assembly 2 reaches a top dead center, the piston assembly 2 turns to move downward, and the air is compressed in the first compression chamber 1021. Subsequently, the peripheral sealing portion 832a of the first valve reed 801a translates upward to close the first suction valve ports, and the central sealing portion 831a of the first valve reed 801a translates upward to open the first discharge valve port. The compressed air enters the communicating air passage 201 from the first discharge valve port through the first discharge passage 1151.

[0128] Next, the sealing portion 83b of the third valve reed 802b translates upward to open the second suction valve port, thus allowing the air to enter the second compression chamber 1022 through the second intake hole 1032. After the piston assembly 2 reaches a bottom dead center, the piston assembly 2 turns to move upward again, and the air is compressed again in the second compression chamber 1022. Then, the exhaust valve 15 opens, and the compressed gas in the second compression chamber 1022 is discharged through the second discharge hole 1042. This cycle repeats continuously.

[0129] A two-stage compressor 10012 according to another example embodiment of the present technology is described below, in conjunction with some of the drawings.

[0130] As shown in FIGS. 13-19, the two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a driving device 9, a first valve reed 801a, and a third valve reed 802b.

[0131] A center of a first piston 221 of the piston assembly 2 is provided with a first intake hole 1031, and an intake passage 111 communicates with a first compression chamber 1021 through the first intake hole 1031. The first piston 221 is provided with a plurality of first discharge holes 1041 surrounding the first intake hole 1031, and a first discharge passage 1151 communicating with the first discharge holes 1041 is defined in the first piston 221.

[0132] The first valve reed 801a may be the valve reed 8 described in the above embodiments, which has both intake and discharge functions. The central sealing portion 831a of the first valve reed 801a is configured to open and close a lower port of the first intake hole 1031 (i.e., a first suction valve port), and the peripheral sealing portion 832a of the first valve reed 801a is configured to open and close upper ports of the plurality of first discharge holes 1041 (i.e., first discharge valve ports).

[0133] The third valve reed 802b may be the intake valve reed described in the above embodiments, which has the intake function. The third valve reed 802b is arranged on a second piston 222 of the piston assembly 2. A sealing portion 83b of the third valve reed 802b is configured to open and close an upper port of a second intake hole 1032 (i.e., a second suction valve port).

[0134] During operation of the two-stage compressor 10012 of this embodiment, the first valve reed 801a implement central intake and peripheral discharge. Other aspects of the two-stage compressor 10012 of this embodiment may be the same as those described in the above embodiments, which will not be repeated here.

[0135] A vehicle including a valve reed and / or a compressor, accordance with example embodiments of the present technology, is described below, in conjunction with some of the drawings.

[0136] As shown in FIG. 20, a vehicle 100 includes a pneumatic device 1002 and a compressor. The compressor may be the compressor 1001 described in the above embodiments. The compressor 1001 is connected to the pneumatic device 1002 to supply compressed air to the pneumatic device 1002. For example, the pneumatic device 1002 may be an air spring of an air suspension system of the vehicle 100.

[0137] In the example embodiments of the vehicle according to the present technology, the compressor has a compact structure, small volume, light weight, and miniaturization, and high applicability, effectively addressing the issues of large volume and slow start-up response of conventional automotive compressors in the related art. Therefore, the compressor according to example embodiments of the present technology may provide a more efficient, compact, and reliable air supply solution for an air suspension system of the vehicle.REFERENCES SIGNS

[0138] The following listing includes numeric reference labels associated with example features shown in the drawings of the present disclosure. 100 vehicle; 1001 compressor; 10011 single-stage compressor; 10012 two-stage compressor; 1002 pneumatic device; 1 cylinder; 101 cylinder cavity; 1011 first cylinder cavity; 1012 second cylinder cavity; 102 compression chamber; 1021 first compression chamber; 1022 second compression chamber; 103 intake hole; 1031 first intake hole; 1032 second intake hole; 104 discharge hole; 1041 first discharge hole; 1042 second discharge hole; 11 cylinder block; 111 intake passage; 1111 first intake passage; 1112 second intake passage; 112 front bearing; 113 intake port; 1131 first intake port; 1132 second intake port; 114 discharge port; 1141 first discharge port; 1142 second discharge port; 115 discharge passage; 1151 first 5 discharge passage; 1152 second discharge passage; 12 cylinder liner; 13 cylinder head; 131 first cylinder head; 132 second cylinder head; 15 exhaust valve; 16 air chamber isolation sleeve; 161 valve reed limiting plate; 17 pressure plate; 171 first pressure plate; 172 second pressure plate; 18 sealing cover; 191 first valve plate; 192 second valve plate; 2 piston assembly; 201 communicating air passage; 21 piston frame; 22 piston; 221 first 10 piston; 222 second piston; 231 sliding groove; 24 sliding block; 3 planetary reduction assembly; 301 mating hole; 31 inner gear ring; 311 cylindrical body; 312 annular boss; 32 planet carrier; 321 assembly groove; 322rear bearing; 33 sun gear; 34 planet gear; 35 planet gear shaft; 4 motor; 401 mating portion; 41 motor shaft; 42 motor housing; 43 motor rear end cover; 15 44 rotor; 45 stator; 46 rotor front bearing; 47 rotor rear bearing; 48 sealing ring; 5 crankshaft; 51 main shaft portion; 511 assembly hole; 52 eccentric shaft portion; 53 balance weight; 6 air storage tank; 8 valve reed; 81a plate body; 82a slit; 824a first slit; 8241a first outer slit segment; 8242a first inner slit segment; 8243a first transition slit segment; 825a second slit; 8251a second outer slit segment; 8252a second inner slit segment; 8253a second transition slit segment; 831a central sealing portion; 832a peripheral sealing portion; 84a mounting portion; 841a mounting hole; 851a first swing arm; 852a second swing arm; 86a first connecting 25 portion; 87a second connecting portion; 88a third connecting portion; 89a fourth connecting portion; 801a first valve reed; 802a second valve reed; 81b valve reed body; 82b slit; 821b outer slit segment; 822b inner slit segment; 823b connecting slit segment; 83b sealing portion; 84b mounting portion; 85b swing arm; 86b first connecting portion; 87b second connecting portion; 802b third valve reed; 9 driving device.Conclusion

[0139] In the present disclosure, it should be understood that the orientation or position relationship indicated by the terms “center,”“longitudinal,”“transverse,”“length,”“width,”“thickness,”“up,”“down,”“front,”“rear,”“left,”“right,”“vertical,”“horizontal,”“top,”“bottom,”“inner,”“outer,”“clockwise,”“counterclockwise,”“axial,”“radial,” and “circumferential” and the like, is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present technology and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, and be constructed and operated in a specific orientation, so it cannot be understood as a limitation of the present technology.

[0140] In addition, the terms “first” and “second” are only used for purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the feature defined as “first” or “second” may explicitly or implicitly include at least one such feature. In the description of the present technology, “a plurality of” means at least two, such as two, three, etc., unless otherwise defined.

[0141] In the present disclosure, unless otherwise expressly defined, terms such as “install / mount,”“interconnect,”“connect,” and “fix” shall be understood broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections or intercommunication; may also be direct connections or indirect connections via intervening media; may also be inner communications or interactions of two elements, unless otherwise defined. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific situations.

[0142] In the present disclosure, unless otherwise expressly defined, the first feature “below,”“under,”“on bottom of,”“above,”“on,” or “on top of” a second feature may include an embodiment in which the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate media. And, the first feature “above,”“on,” or “on top of” the second feature may include an embodiment in which the first feature is right or obliquely “above,”“on,” or “on top of” the second feature, or just means that the first feature is at a height higher than that of the second feature. The first feature “below,”“under,” or “on bottom of” the second feature may include an embodiment in which the first feature is right or obliquely “below,”“under,” or “on bottom of” the second feature, or just means that the first feature is at a height lower than that of the second feature.

[0143] In the present disclosure, terms such as “an embodiment,”“some embodiments,”“an example,”“a specific example,” or “some examples” means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present technology. Thus, the appearances of these terms in various places throughout this specification are not necessarily referring to the same embodiment or example of the present technology. Furthermore, the particular features, structures, materials, or characteristics may be combined in one or more embodiments or examples in any suitable manner. In addition, without contradiction, those skilled in the art may combine and unite different embodiments or examples or features of the different embodiments or examples described in this specification.

[0144] Although the embodiments of the present technology have been shown and described above, it can be understood that the above embodiments are illustrative and shall not be understood as limitation to the present technology, and changes, modifications, alternatives and variations can be made in the above embodiments within the scope of the present technology by those skilled in the art.

[0145] Implementations of the subject matter and the functional operations described in this patent document can be implemented in various systems, digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this specification and their structural equivalents, or in combinations of one or more of them. Implementations of the subject matter described in this specification can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a tangible and non-transitory computer readable medium for execution by, or to control the operation of, data processing apparatus. The computer readable medium can be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of matter effecting a machine-readable propagated signal, or a combination of one or more of them. The term “data processing unit” or “data processing apparatus” encompasses all apparatus, devices, and machines for processing data, including by way of example a programmable processor, a computer, or multiple processors or computers. The apparatus can include, in addition to hardware, code that creates an execution environment for the computer program in question, e.g., code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more of them.

[0146] A computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, and it can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program can be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub programs, or portions of code). A computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across multiple sites and interconnected by a communication network.

[0147] The processes and logic flows described in this specification can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).

[0148] Processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. Generally, a processor will receive instructions and data from a read only memory or a random access memory or both. The essential elements of a computer are a processor for performing instructions and one or more memory devices for storing instructions and data. Generally, a computer will also include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto optical disks, or optical disks. However, a computer need not have such devices. Computer readable media suitable for storing computer program instructions and data include all forms of nonvolatile memory, media and memory devices, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices. The processor and the memory can be supplemented by, or incorporated in, special purpose logic circuitry.

[0149] While this patent document contains many specifics, these should not be construed as limitations on the scope of any invention or of what may be claimed, but rather as descriptions of features that may be specific to particular embodiments of particular inventions. Certain features that are described in this patent document in the context of separate embodiments can also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Moreover, although features may be described above as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can in some cases be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

[0150] Similarly, while operations are depicted in the drawings in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Moreover, the separation of various system components in the embodiments described in this patent document should not be understood as requiring such separation in all embodiments.

[0151] Only a few implementations and examples are described and other implementations, enhancements and variations can be made based on what is described and illustrated in this patent document.

Claims

1. A valve reed, comprising:a plate body, wherein the plate body defines a slit extending through the plate body along a thickness direction of the plate body, and wherein the slit divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, a plurality of first swing arms, and a plurality of second swing arms;wherein the central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion,wherein the plurality of first swing arms are located between the peripheral sealing portion and the mounting portion, a first end of each first swing arm is connected to the peripheral sealing portion, and a second end of each first swing arm is connected to the mounting portion, andwherein the plurality of second swing arms are located between the central sealing portion and the mounting portion, a first end of each second swing arm is connected to the central sealing portion, and a second end of each second swing arm is connected to the mounting portion.

2. The valve reed according to claim 1,wherein, when a number of the plurality of first swing arms is even, the plurality of first swing arms are arranged in pairs, and two swing arms in a same pair are centrally symmetric to each other with respect to a center of the central sealing portion; and wherein, when the number of the plurality of first swing arms is odd, the plurality of first swing arms are uniformly arranged around the center of the central sealing portion along a circumferential direction of the central sealing portion; andwherein, when a number of the plurality of second swing arms is even, the plurality of second swing arms are arranged in pairs, and two swing arms in a same pair are centrally symmetric to each other with respect to the center of the central sealing portion; and wherein, when the number of the plurality of second swing arms is odd, the plurality of second swing arms are uniformly arranged around the center of the central sealing portion along the circumferential direction of the central sealing portion.

3. The valve reed according to claim 2, wherein the central sealing portion is circular, the mounting portion and the peripheral sealing portion are each annular, and the plurality of first swing arms and the plurality of second swing arms are each arc-shaped and concentric with the central sealing portion.

4. The valve reed according to claim 3, wherein three first swing arms and two second swing arms are provided, and the slit comprises three first slits and two second slits;wherein each first slit comprises an arc-shaped first outer slit segment, an arc-shaped first inner slit segment, and a first transition slit segment connecting the first outer slit segment and the first inner slit segment, and each first swing arm is located between the first outer slit segment of one first slit and the inner slit segment of another first slit; andwherein each second slit comprises an arc-shaped second outer slit segment, an arc-shaped second inner slit segment, and a second transition slit segment connecting the second outer slit segment and the second inner slit segment, and one second swing arm is located between the second outer slit segment of one second slit and the second inner slit segment of another second slit, and another second swing arm is located between the second inner slit segment of the one second slit and the second outer slit segment of the another second slit.

5. The valve reed according to claim 1, wherein the mounting portion defines a plurality of mounting holes uniformly arranged around a center of the central sealing portion along a circumferential direction of the central sealing portion, and at least part of the plurality of mounting holes are arranged adjacent to the second ends of the first swing arms and the second ends of the second swing arms.

6. The valve reed according to claim 1, wherein a width of the slit is greater than or equal to 1 mm and less than or equal to 4 mm, and a thickness of the plate body is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

7. The valve reed according to claim 1 configured for a compressor, wherein the compressor comprises:a cylinder having a first compression chamber and a second compression chamber, wherein the first compression chamber has a first intake hole and a first discharge hole, and the second compression chamber has a second intake hole and a second discharge hole;a piston assembly comprising pistons and a piston frame, wherein the pistons are movably arranged in the cylinder and comprises a first piston and a second piston, the first piston is arranged at a first end of the piston frame and configured to compress gas in the first compression chamber, and the second piston is arranged at a second end of the piston frame and configured to compress gas in the second compression chamber;a driving device connected to the piston frame to drive the pistons to move within the cylinder;a communicating air passage extending through the first piston, the piston frame, and the second piston to communicate the first compression chamber and the second compression chamber, and the communicating air passage forming the second intake hole; anda plurality of valve reeds comprising a first valve reed and a third valve reed,wherein the first valve reed arranged on the first piston, and the first valve reed is the valve reed according to claim 1,wherein one of the central sealing portion and the peripheral sealing portion of the first valve reed is configured to open and close the first intake hole, and the other of the central sealing portion and the peripheral sealing portion of the first valve reed is configured to open and close the first discharge hole, andwherein the third valve reed arranged on the second piston and configured to open and close the second intake hole.

8. The valve reed according to claim 7 configured as the first valve reed of the compressor,wherein the third valve reed comprises a valve reed body, the valve reed body defines a slit extending through the valve reed body along a thickness direction of the valve reed body, and the slit divides the valve reed body into a sealing portion configured to open and close the second intake hole, a mounting portion, and a plurality of swing arms;wherein the mounting portion is arranged around the sealing portion and is concentric with the sealing portion, a first end of each swing arm is connected to the sealing portion, and a second end of each swing arm is connected to the mounting portion;wherein, when a number of the plurality of swing arms is even, the plurality of swing arms are arranged in pairs, and two swing arms in a same pair are centrally symmetric to each other with respect to a center of the sealing portion, and, when the number of the plurality of swing arms is odd, the plurality of swing arms are uniformly arranged around the center of the sealing portion along a circumferential direction of the sealing portion.

9. The valve reed according to claim 8 configured as the first valve reed of the compressor,wherein the sealing portion is circular, the mounting portion is annular, and the plurality of swing arms are arc-shaped;wherein two swing arms are provided and are centrally symmetric to each other with respect to the center of the sealing portion; and two slits are provided, and each slit comprises an arc-shaped outer slit segment, an arc-shaped inner slit segment, and a connecting slit segment connecting the outer slit segment and the inner slit segment, wherein one swing arm is located between the outer slit segment of one slit and the inner slit segment of another slit, and another swing arm is located between the inner slit segment of the one slit and the outer slit segment of the another slit.

10. The valve reed according to claim 9 configured as the first valve reed of the compressor,wherein central angles of the inner slit segment and the outer slit segment are equal, and the central angle is greater than or equal to 120 degrees and less than or equal to 150 degrees.

11. The valve reed according to claim 8 configured as the first valve reed of the compressor,wherein the sealing portion is circular, the mounting portion is annular, and the plurality of swing arms are arc-shaped;wherein three swing arms are provided and uniformly arranged around the center of the sealing portion along the circumferential direction of the sealing portion; and three slits are provided, and each slit comprises an arc-shaped outer slit segment, an arc-shaped inner slit segment, and a connecting slit segment connecting the outer slit segment and the inner slit segment, wherein each swing arm is located between the outer slit segment of one slit and the inner slit segment of another slit.

12. A compressor, comprising:a cylinder having a compression chamber, wherein the compression chamber has an intake hole and a discharge hole;a piston assembly comprising a piston and a piston frame, wherein the piston is arranged at least one end of the piston frame and configured to compress gas in the compression chamber;a driving device connected to the piston frame to drive the piston to move within the cylinder; anda valve reed arranged on the cylinder,wherein the valve reed comprises a plate body, the plate body defines a slit extending through the plate body along a thickness direction of the plate body, and the slit divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, a plurality of first swing arms, and a plurality of second swing arms;wherein the central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion,wherein the plurality of first swing arms are located between the peripheral sealing portion and the mounting portion, a first end of each first swing arm is connected to the peripheral sealing portion, and a second end of each first swing arm is connected to the mounting portion,wherein the plurality of second swing arms are located between the central sealing portion and the mounting portion, a first end of each second swing arm is connected to the central sealing portion, and a second end of each second swing arm is connected to the mounting portion, andwherein one of the central sealing portion and the peripheral sealing portion is configured to open and close the intake hole, and the other of the central sealing portion and the peripheral sealing portion is configured to open and close the discharge hole.

13. The compressor according to claim 12, wherein a plurality of the discharge holes is provided and uniformly arranged around the intake hole, or a plurality of the intake holes are provided and uniformly arranged around the discharge hole.

14. The compressor according to claim 12, wherein one compression chamber and one piston are provided.

15. The compressor according to claim 12,wherein:the compression chamber comprises a first compression chamber and a second compression chamber, the first compression chamber has a first intake hole and a first discharge hole, and the second compression chamber has a second intake hole and a second discharge hole;the first compression chamber communicates with the second compression chamber through a communicating air passage defined in the cylinder or formed by a separate bypass pipe; andthe piston comprise a first piston and a second piston, the first piston is arranged at a first end of the piston frame and configured to compress gas in the first compression chamber, and the second piston is arranged at a second end of the piston frame and configured to compress gas in the second compression chamber; andwherein:the valve reed comprises a first valve reed and a second valve reed;one of the central sealing portion and the peripheral sealing portion of the first valve reed is configured to open and close the first intake hole, and the other of the central sealing portion and the peripheral sealing portion of the first valve reed is configured to open and close the first discharge hole; andone of the central sealing portion and the peripheral sealing portion of the second valve reed is configured to open and close the second intake hole, and the other of the central sealing portion and the peripheral sealing portion of the second valve reed is configured to open and close the second discharge hole.

16. The compressor according to claim 12, wherein the driving device comprises a motor and a crankshaft, and a motor shaft of the motor is connected to the piston frame through the crankshaft.

17. The compressor according to claim 16, wherein the driving device further comprises a planetary reduction assembly, and the planetary reduction assembly is connected between the motor and the crankshaft.

18. The compressor according to claim 17, wherein the planetary reduction assembly comprises an inner gear ring, a planet carrier, a sun gear, and a plurality of planet gears; the planet gears are rotatably mounted on the planet carrier through planet gear shafts, the sun gear is mounted on the motor shaft, the inner gear ring is connected to a motor housing of the motor, and the planet gears mesh with the sun gear and the inner gear ring; the crankshaft comprises a main shaft portion and an eccentric shaft portion; the main shaft portion is connected to the planet carrier, and a central axis of the main shaft portion is coaxial with a central axis of the planet carrier, a central axis of the inner gear ring, and a central axis of the motor shaft; and the eccentric shaft portion is connected to the main shaft portion, a central axis of the eccentric shaft portion is eccentric relative to the central axis of the main shaft portion, and the eccentric shaft portion is connected to the piston frame.

19. The compressor according to claim 18, wherein the main shaft portion is provided with a balance weight; the planet carrier is integrally formed with the main shaft portion; the main shaft portion defines an assembly hole, the eccentric shaft portion is fitted in the assembly hole, and an end of the eccentric shaft portion extends out of the assembly hole; the inner gear ring comprises a cylindrical body and an annular boss, the annular boss is arranged on an inner circumferential wall of the cylindrical body, the annular boss defines a mating hole at an end of the cylindrical body in the cylindrical body, and inner teeth are formed on an inner circumferential wall surface of the annular boss; an end of the motor housing is provided with a mating portion with a reduced diameter; and the mating portion is fitted in the mating hole, the end of the cylindrical body is abutted against an end of the motor housing, and an outer circumferential surface of the cylindrical body is flush with an outer circumferential surface of the motor housing.

20. A vehicle, comprising:a pneumatic device; anda compressor, comprising:a cylinder having a compression chamber, wherein the compression chamber has an intake hole and a discharge hole;a piston assembly comprising a piston and a piston frame, wherein the piston is arranged at least one end of the piston frame and configured to compress gas in the compression chamber;a driving device connected to the piston frame to drive the piston to move within the cylinder; anda valve reed arranged on the cylinder,wherein the valve reed comprises a plate body, the plate body defines a slit extending through the plate body along a thickness direction of the plate body, and the slit divides the plate body into a central sealing portion, a mounting portion, a peripheral sealing portion, a plurality of first swing arms, and a plurality of second swing arms;the central sealing portion, the mounting portion, and the peripheral sealing portion are concentric with each other, the mounting portion surrounds the central sealing portion, and the peripheral sealing portion surrounds the mounting portion; the plurality of first swing arms are located between the peripheral sealing portion and the mounting portion, a first end of each first swing arm is connected to the peripheral sealing portion, and a second end of each first swing arm is connected to the mounting portion;the plurality of second swing arms are located between the central sealing portion and the mounting portion, a first end of each second swing arm is connected to the central sealing portion, and a second end of each second swing arm is connected to the mounting portion; andone of the central sealing portion and the peripheral sealing portion is configured to open and close the intake hole, and the other of the central sealing portion and the peripheral sealing portion is configured to open and close the discharge hole; andwherein the compressor is connected to the pneumatic device to supply compressed gas to the pneumatic device.

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