Valve plate, compressor and vehicle

Abstract

The embodiment of the invention discloses a valve plate, a compressor and a vehicle. The valve plate comprises a plate body, the plate body is provided with a slot, the slot penetrates through the plate body in the thickness direction of the plate body, the slot divides the plate body into a center sealing part, a mounting part, a peripheral sealing part, a plurality of first swing arms and a plurality of second swing arms, the center sealing part, the mounting part and the peripheral sealing part are concentric, the mounting part surrounds the center sealing part, the peripheral sealing part surrounds the mounting part, and the first swing arms and the second swing arms are arranged on the mounting part. The first swing arm is located between the peripheral sealing part and the mounting part, the first end of the first swing arm is connected with the peripheral sealing part, the second end of the first swing arm is connected with the mounting part, the second swing arm is located between the central sealing part and the mounting part, the first end of the second swing arm is connected with the central sealing part, and the second end of the second swing arm is connected with the mounting part. The valve block is high in response speed, has the air inlet function and the air exhaust function, and is compact in structure, convenient to disassemble, assemble and maintain and low in production cost.

Description

Technical Field

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

[0002] A compressor, also known as an air pump, is a widely used air compression device. For example, it can be used to supply compressed air to pneumatic devices such as air springs in vehicles such as off-road vehicles and sport utility vehicles (SUVs). In the related art, the suction valve and exhaust valve of the compressor usually use valve plates to open and close the valve ports. During the opening and closing of the valve plates, there are problems such as slow valve plate switch response, gradual change in the flow area of ​​the valve ports, and small flow area. In addition, in the compressors in the related art, the suction valve plates and exhaust valve plates are set separately from each other, resulting in many parts, inconvenient disassembly and assembly, and high cost. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a valve sheet with fast response and air intake and exhaust functions.

[0005] An embodiment of the present invention further provides a compressor.

[0006] An embodiment of the present invention further provides a vehicle.

[0007] The valve sheet of an embodiment of the present invention includes a sheet body, the sheet body is provided with a groove, the groove penetrates the sheet body along the thickness direction of the sheet body, the groove divides the sheet body into a central sealing part, a mounting part, a peripheral sealing part, a plurality of first swing arms and a plurality of second swing arms, the central sealing part, the mounting part and the peripheral sealing part are concentric with each other, the mounting part surrounds the central sealing part, the peripheral sealing part surrounds the mounting part, the first swing arm is located between the peripheral sealing part and the mounting part, the first end of the first swing arm is connected to the peripheral sealing part, the second end of the first swing arm is connected to the mounting part, the second swing arm is located between the central sealing part and the mounting part, the first end of the second swing arm is connected to the central sealing part, and the second end of the second swing arm is connected to the mounting part.

[0008] The valve plate of the embodiment of the present invention has a fast response speed and high sensitivity when opening and closing the valve port, the valve port changes instantaneously, and the valve port opens and closes evenly. Compared with the valve plates in the related art, the flow area is large when the valve is opened at the same height, and the service life of the valve plate is long. In addition, the valve plate has the dual functions of air intake and exhaust, and the sealing part for opening and closing the air intake valve port and the sealing part for opening and closing the exhaust valve port are integrated, with a compact structure, a reduced number of parts, improved convenience for disassembly and maintenance of the valve plate, and reduced production costs.

[0009] The compressor of the embodiment of the present invention includes a cylinder, a piston assembly, a driving device and a valve plate; the cylinder has a compression chamber, and the compression chamber has an air inlet hole and an air exhaust hole; the piston assembly includes a piston and a piston rack, and the piston is arranged at at least one end of the piston rack, and is used to compress the gas in the compression chamber; the driving device is connected to the piston rack, and is used to drive the piston to move in the cylinder; the valve plate is the valve plate described in the above embodiment, and the valve plate is arranged on the cylinder, wherein one of the central sealing part and the peripheral sealing part is used to open and close the air inlet hole, and the other of the central sealing part and the peripheral sealing part is used to open and close the air exhaust hole.

[0010] The compressor of the embodiment of the present invention comprises a cylinder, a piston assembly, a driving device, a communicating air passage, a first valve plate and a second valve plate; the cylinder has a first compression chamber and a second compression chamber, the first compression chamber has a first air inlet hole and a first air exhaust hole, the second compression chamber has a second air inlet hole and a second air exhaust hole; the piston assembly comprises a piston and a piston rack, the piston is 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 rack for compressing the gas in the first compression chamber, the second piston is arranged at a second end of the piston rack for compressing the gas in the second compression chamber; the driving device is connected to the piston The piston rack is connected to the piston rack and is used to drive the piston to move in the cylinder; the connecting air channel runs through the first piston, the piston rack and the second piston, and is used to connect the first compression chamber and the second compression chamber, and the connecting air channel constitutes the second air inlet hole; the first valve plate is arranged on the first piston, and the first valve plate is the valve plate described in the above embodiment, wherein one of the central sealing part and the peripheral sealing part is used to open and close the first air inlet hole, and the other of the central sealing part and the peripheral sealing part is used to open and close the first exhaust hole; the second valve plate is arranged on the second piston and is used to open and seal the second air inlet hole.

[0011] The vehicle of the embodiment of the present invention comprises a pneumatic device and the compressor described in the above embodiment, wherein the compressor is connected to the pneumatic device and is used to supply compressed gas to the pneumatic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional schematic diagram of a valve sheet according to an embodiment of the present invention.

[0013] Figure 2 It is a schematic cross-sectional view of a valve plate according to an embodiment of the present invention.

[0014] Figure 3 Schematic diagram of an explosion of a first-stage compressor according to an embodiment of the present invention.

[0015] Figure 4 It is a partial cross-sectional schematic diagram of a first-stage compressor according to an embodiment of the present invention.

[0016] Figure 5 It is a partial cross-sectional schematic diagram of a first-stage compressor according to an embodiment of the present invention, wherein the valve plate is in a suction state.

[0017] Figure 6 It is a partial cross-sectional schematic diagram of a first-stage compressor according to an embodiment of the present invention, wherein the valve plate is in an exhaust state.

[0018] Figure 7 It is a partial cross-sectional schematic diagram of a one-stage compressor according to another embodiment of the present invention.

[0019] Figure 8 It is a partial cross-sectional schematic diagram of a one-stage compressor according to another embodiment of the present invention, wherein the valve plate is in a suction state.

[0020] Fig. 9 It is a partial cross-sectional schematic diagram of a first-stage compressor according to another embodiment of the present invention, wherein the valve plate is in an exhaust state.

[0021] Fig.10 Schematic diagram of a two-stage compressor according to an embodiment of the present invention.

[0022] Fig.11 Schematic diagram of a two-stage compressor according to another embodiment of the present invention.

[0023] Fig.12 Schematic diagram of a two-stage compressor according to another embodiment of the present invention.

[0024] Fig.13 Schematic diagram of a two-stage compressor according to another embodiment of the present invention.

[0025] Fig.14 It is a three-dimensional schematic diagram of the second valve plate according to an embodiment of the present invention.

[0026] Fig.15 4 is a schematic cross-sectional view of a second valve plate according to an embodiment of the present invention.

[0027] Fig.16 It is a cross-sectional schematic diagram of a second valve plate according to another embodiment of the present invention.

[0028] Fig.17 It is a cross-sectional schematic diagram of a driving device of a compressor according to an embodiment of the present invention.

[0029] Fig.18 1 is an exploded view of a driving device of a compressor according to an embodiment of the present invention.

[0030] Fig.19Schematic diagram of a crankshaft of a compressor according to an embodiment of the present invention.

[0031] Fig. 20 Schematic diagram of a vehicle according to an embodiment of the present invention.

[0032] Reference numerals:

[0033] 100. Vehicle; 1001. Compressor; 10011. Primary compressor; 10012. Secondary compressor; 1002. Pneumatic device;

[0034] 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. Inlet hole; 1031. First inlet hole; 1032. Second inlet hole; 104. Exhaust hole; 1041. First exhaust hole; 1042. Second exhaust hole; 11. Cylinder body; 111. Inlet passage; 1111. First inlet passage; 1112. Second inlet passage; 112. Front bearing; 113. Inlet port; 1131. first air inlet; 1132, second air inlet; 114, exhaust port; 1141, first exhaust port; 1142, second exhaust port; 115, exhaust passage; 1151, first exhaust passage; 1152, second exhaust passage; 12, cylinder sleeve; 13, cylinder head; 131, first cylinder head; 132, second cylinder head; 15, exhaust valve; 16, air chamber isolation sleeve; 161, valve plate limit plate; 17, pressure plate; 171, first pressure plate; 172, second pressure plate; 18, sealing cover; 191, first valve plate; 192, second valve plate;

[0035] 2. Piston assembly; 201. communicating air passage; 21. piston rack; 22. piston; 221. first piston; 222. second piston; 231. slide groove; 24. slider;

[0036] 3. Planetary reduction assembly; 301. Matching hole; 31. Internal gear ring; 311. Cylinder; 312. Annular boss; 32. Planet carrier; 321. Assembly groove; 322. Rear bearing; 33. Sun gear; 34. Planet gear; 35. Planet gear shaft;

[0037] 4. Motor; 401. Matching part; 41. Motor shaft; 42. Motor housing; 43. Motor rear end cover; 44. Rotor; 45. Stator; 46. Rotor front bearing; 47. Rotor rear bearing; 48. Sealing ring;

[0038] 5. crankshaft; 51. main shaft; 511. assembly hole; 52. eccentric shaft; 53. balance block;

[0039] 6. Gas cylinder;

[0040] 8. Valve plate;

[0041] 81a, sheet body; 82a, slot; 824a, first slot; 8241a, first outer slot section; 8242a, first inner slot section; 8243a, first transition slot section; 825a, second slot; 8251a, second outer slot section; 8252a, second inner slot section; 8253a, second transition slot section; 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 portion; 87a, second connecting portion; 88a, third connecting portion; 89a, fourth connecting portion; 801a, first valve sheet; 802a, second valve sheet;

[0042] 81b, valve plate body; 82b, slot; 821b, outer slot section; 822b, inner slot section; 823b, connecting slot section; 83b, sealing portion; 84b, mounting portion; 85b, swing arm; 86b, first connecting portion; 87b, second connecting portion; 802b, second valve plate;

[0043] 9. Driving device. DETAILED DESCRIPTION

[0044] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0045] The valve sheet according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0046] like Figure 1-Figure 20 As shown, the valve plate 8 of the embodiment of the present invention includes a plate body 81a, and the plate body 81a is provided with a slot 82a, and the slot 82a penetrates the plate body 81a along the thickness direction of the plate body 81a. The slot 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, the centers of the central sealing portion 831a, the mounting portion 84a, and 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.

[0047] The first swing arm 851a and the second swing arm 852a are both elastic arms, and the width of the first swing arm 851a is substantially constant in the length direction thereof, and the width of the second swing arm 852a is substantially constant in the length direction thereof. The first swing arm 851a is located between the peripheral sealing portion 832a and the mounting portion 84a, and the first end of the first swing arm 851a is connected to the peripheral sealing portion 832a, and the second end of the first swing arm 851a is connected to the mounting portion 84a. The second swing arm 852a is located between the central sealing portion 831a and the mounting portion 84a, and the first end of the second swing arm 852a is connected to the central sealing portion 831a, and the second end of the second swing arm 852a is connected to the mounting portion 84a.

[0048] When the number of first swing arms 851a is an even number, the multiple first swing arms 851a are arranged in pairs, that is, the multiple first swing arms 851a are divided into at least one pair, and the two swing arms in the same pair of swing arms are centrally symmetrical to each other relative to the center of the central sealing portion 831a, that is, one first swing arm 851a is rotated 180 degrees to overlap with another first swing arm 851a.

[0049] When the number of first swing arms 851a is an odd number, multiple first swing arms 851a are evenly arranged along the circumference of the central sealing portion 831a around the center of the central sealing portion 831a. For example, the number of first swing arms 851a is N, N is an odd number, and among two adjacent first swing arms 851a, one first swing arm 851a rotates 360 / N degrees around the center of the central sealing portion 831a and overlaps with the other first swing arm 851a.

[0050] Similarly, when the number of the second swing arms 852a is an even number, the plurality of second swing arms 852a are arranged in pairs, and the two swing arms in the same pair of swing arms are centrally symmetrical with respect to the center of the central sealing portion 831a. When the number of the second swing arms 852a is an odd number, the plurality of second swing arms 852a are uniformly arranged around the center of the central sealing portion 831a along the circumference of the central sealing portion 831a.

[0051] In the valve plate of the embodiment of the present invention, the swing arms are centrally symmetrical or evenly arranged along the circumferential direction, which improves the force uniformity of the central sealing part and the peripheral sealing part, and improves the uniformity of the valve plate in opening and closing the valve port.

[0052] Optionally, the thickness T of the sheet 81a may be greater than or equal to 0.1 mm and less than or equal to 0.5 mm, for example, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.

[0053] The valve plate 8 can be a metal plate, such as a stainless steel plate or an alloy plate. Alternatively, the valve plate 8 can also be made of a non-metal plate, such as a resin plate with good flexibility.

[0054] The width of the slot 82a should ensure that during the use of the valve plate 8, there is no interference between the first swing arm 851a, the peripheral sealing portion 832a and the mounting portion 84a, and between the second swing arm 852a, the central sealing portion 831a and the mounting portion 84a. Preferably, the width of the slot 82a can be greater than or equal to 1 mm and less than or equal to 4 mm, and the width H of the swing arm can be greater than or equal to 1.3 mm and less than or equal to 5 mm. If the swing arm is too narrow, fatigue deformation will occur after the valve plate 8 has been used for a period of time. If the swing arm is too wide, the sensitivity of the switch valve port of the sealing portion will be affected. The slot 82a can be formed by stamping a metal sheet. In other words, the valve plate 8 is formed integrally by stamping a metal sheet.

[0055] In some examples, such as Figure 1-Figure 2 As shown, the mounting portion 84a is provided with a plurality of mounting holes 841a, and the plurality of mounting holes 841a are evenly arranged around the center of the central sealing portion 831a and along the circumference of the central sealing portion 831a. At least a portion of the mounting holes 841a is arranged adjacent to the second end of the first swing arm 851a and the second end of the second swing arm 852a, so as to ensure the reliability of the sealing of the valve plate 8, avoid the first swing arm 851a and the second swing arm 852a from being irreversibly bent at the connection portion between the mounting portion 84a after working for a period of time, and avoid the swing arm from being offset to affect the sealing effect of the sealing portion.

[0056] like Figure 4-Figure 13 As shown, when the valve plate 8 of the embodiment of the present invention is installed in the compressor 1001, the valve plate 8 can be fixed at the valve port by the pressing plate 17 and the screw. One of the central sealing portion 831a and the peripheral sealing portion 832a is opposite to the suction valve port, and the other of the central sealing portion 831a and the peripheral sealing portion 832a is opposite to the exhaust valve port. The central sealing portion 831a and the peripheral sealing portion 832a open and close the corresponding valve port by translation.

[0057] Preferably, a flange surrounding the valve port is provided at the valve port, and the end surface of the flange constitutes a sealing surface for tightly fitting with the central sealing portion 831a and the peripheral sealing portion 832a, thereby improving the sealing effect of the sealing portion on the valve port.

[0058] Compared with the valve disc in the related art, the valve disc in the embodiment of the present invention has a uniform opening height, a large flow area at the same opening height, smooth air flow, small air resistance, and a high response speed of the valve disc. In addition, the swing arm is symmetrically or evenly arranged at the center, so that the valve disc is evenly stressed, the sensitivity of the valve disc opening and closing is improved, and the fatigue of the valve disc after a period of use is reduced, thereby extending the service life of the valve disc.

[0059] In the embodiment of the present invention, the widths of the first swing arm and the second swing arm are substantially constant, which further improves the force uniformity of the valve plate and the uniformity of the opening and closing of the valve port, thereby further improving the response speed and sensitivity of the valve plate.

[0060] The valve plate of the embodiment of the present invention has an air intake function and an exhaust function. The sealing part for opening and closing the air intake valve port and the sealing part for opening and closing the exhaust valve port are integrated into one design. The valve plate has a compact structure, reduces the number of parts, improves the convenience of disassembly and maintenance of the valve plate, and reduces production costs.

[0061] The valve sheet according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0062] like Figure 1-Figure 2 As shown, the valve plate 8 includes a plate body 81a, which is circular in shape as a whole. The plate body 81a may be a stainless steel plate, and the thickness T of the plate body 81a may be 0.1 mm.

[0063] The sheet 81a is provided with a slot 82a, which penetrates the sheet 81a along the thickness direction of the sheet 81a. The slot 82a includes three first slots 824a and two second slots 825a. The slot 82a divides the sheet 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 arm 851a and the second swing arm 852a are concentric with each other.

[0064] The mounting portion 84a surrounds the central sealing portion 831a, and the peripheral sealing portion 832a surrounds the mounting portion 84a. The first swing arm 851a is located between the peripheral sealing portion 832a and the mounting portion 84a, and the three first swing arms 851a are evenly arranged along the circumference of the central sealing portion 831a. The first end of the first swing arm 851a is connected to the peripheral sealing portion 832a through the first connecting portion 86a, and the second end of the first swing arm 851a is connected to the mounting portion 84a through the second connecting portion 87a. The second swing arm 852a is located between the central sealing portion 831a and the mounting portion 84a, and the two second swing arms 852a are centrally symmetrical with each other relative to the center of the central sealing portion 831a. The first end of the second swing arm 852a is connected to the central sealing portion 831a through the third connecting portion 88a, and the second end of the second swing arm 852a is connected to the mounting portion 84a through the fourth connecting portion 89a.

[0065] The first slot 824a includes an arcuate first outer slot segment 8241a, an arcuate first inner slot segment 8242a, and a first transition slot segment 8243a connected between the first outer slot segment 8241a and the first inner slot segment 8242a. The first swing arm 851a is located between the first outer slot segment 8241a of one first slot 824a and the inner slot segment 82a of another adjacent first slot 824a.

[0066] The second slot 825a includes an arcuate second outer slot segment 8251a, an arcuate second inner slot segment 8252a, and a second transition slot segment 8253a connected between the second outer slot segment 8251a and the second inner slot segment 8252a. A second swing arm 852a is located between the second outer slot segment 8251a of a second slot 825a and the second inner slot segment 8252a of another second slot 825a, and another second swing arm 852a is located between the second inner slot segment 8252a of a second slot 825a and the second outer slot segment 8251a of another second slot 825a.

[0067] The mounting portion 84a is provided with a plurality of mounting holes 841a, and the plurality of mounting holes 841a are evenly arranged along the circumference of the central sealing portion 831a. Figure 4-Figure 13 As shown, the valve plate 8 is pressed onto the valve port through the pressure plate 17 .

[0068] Specifically, Figure 4-Figure 6 as well as Fig.10 and Fig.12 As shown, the peripheral sealing portion 832a corresponds to the air intake valve port to open and close the air intake valve port, and the central sealing portion 831a corresponds to the exhaust valve port to open and close the exhaust valve port. At this time, the valve plate 8 is for peripheral air intake and central exhaust. Figure 7-Figure 9 as well as Fig.11 and Fig.13 As shown, the central sealing portion 831a corresponds to the intake valve port to open and close the intake valve port, and the peripheral sealing portion 832a corresponds to the exhaust valve port to open and close the exhaust valve port. At this time, the valve plate 8 is centrally for air intake and peripherally for exhaust.

[0069] The compressor according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0070] like Figure 1-Figure 20 As shown, the compressor 1001 includes a cylinder 1, a piston assembly 2, a drive device 9 and a valve plate.

[0071] The cylinder 1 comprises a cylinder body 11 , and a cylinder cavity 101 is formed in the cylinder body 11 .

[0072] The piston assembly 2 includes a piston 22 and a piston frame 21. The piston 22 is disposed at at least one end of the piston frame 21, and the piston 22 is generally 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 and defines a compression chamber 102 in the cylinder cavity 101, and the compression chamber 102 has an air inlet 103 and an air outlet 104.

[0073] The piston assembly 2 may include a piston 22 disposed at one end of the piston rack 21, and the cylinder chamber 101 and the compression chamber 102 are both one, and the compressor 1001 is called a first-stage compressor 10011. The piston assembly 2 may include two pistons 22 disposed at both ends of the piston rack 21, and the cylinder chamber 101 and the compression chamber 102 are both two, and the sizes of the two pistons 22 are usually different, one compression chamber 102 can be called a low-pressure compression chamber, and the other compression chamber 102 can be called a high-pressure compression chamber, and the compressor 1001 is called a two-stage compressor 10012.

[0074] 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. The first end of the eccentric shaft portion 52 is pivotally connected to the piston frame 21, and the 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 the central axis of the eccentric shaft portion 52 is eccentric relative to the central axis of the motor shaft 41. The motor 4 drives the piston frame 21 through the crankshaft 5 to drive the piston 22 to reciprocate in the cylinder 1.

[0075] The valve plate may be the valve plate 8 of the above-mentioned embodiment and may be provided on the cylinder 1. One of the central sealing portion 831a and the peripheral sealing portion 832a is used to open and close the port (intake valve port) of the intake hole 103, and the other of the central sealing portion 831a and the peripheral sealing portion 832a is used to open and close the port (exhaust valve port) of the exhaust hole 104.

[0076] When the compression chamber 102 is in the suction state, one of the central sealing portion 831a and the peripheral sealing portion 832a opens the suction valve port, and the airflow in the air inlet hole 103 enters the compression chamber 102 through the slot 82a of the valve plate 8. After the air pressure in the compression chamber 102 gradually increases to a preset value, one of the central sealing portion 831a and the peripheral sealing portion 832a closes the suction valve port, and the other of the central sealing portion 831a and the peripheral sealing portion 832a opens the exhaust valve port, and the airflow in the exhaust hole 104 is discharged from the compression chamber 102 through the slot 82a of the valve plate 8.

[0077] Alternatively, if Figure 7-Figure 9 as well as Fig.11 As shown, there may be one air inlet 103 and multiple air outlets 104, and the multiple air outlets 104 are evenly arranged around the air inlet 103. The central sealing portion 831a is used to open and close the port of the air inlet 103, and the peripheral sealing portion 832a is used to open and close the ports of the multiple air outlets 104 at the same time. Figure 4-Figure 6 as well as Fig.10As shown, there can be one exhaust hole 104 and multiple inlet holes 103, which are evenly arranged around the exhaust hole 104. The central sealing portion 831a is used to open and close the port of the exhaust hole 104, and the peripheral sealing portion 832a is used to open and close the ports of multiple inlet holes 103 at the same time.

[0078] Compared with the related art in which the suction valve plate and the exhaust valve plate of the compressor are arranged separately, the compressor in the embodiment of the present invention uses one valve plate to realize the opening and closing of the suction valve port and the opening and closing of the exhaust valve port, reducing the number of valve plates and other installed parts, having a compact structure, being easy to disassemble and maintain, and having a low production cost.

[0079] A one-stage compressor according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0080] like Figure 3-Figure 6 As shown, the first-stage compressor 10011 includes a cylinder 1, a piston assembly 2, a motor 4, a crankshaft 5, an air storage cylinder 6 and a valve plate.

[0081] The cylinder 1 includes a cylinder body 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 on the upper end of the cylinder body 11, and is detachably connected to the cylinder body 11, for example, by bolts. The cylinder head 13 has an air inlet 113 and an exhaust port 114, and the cylinder head 13 has an air inlet passage 111 connected to the air inlet 113 and an exhaust passage 115 connected to the exhaust port 114. The exhaust port 114 of the cylinder head 13 is connected to the air reservoir 6. The air reservoir 6 can smooth the airflow and improve the operating quality and reliability of the compressor 1001.

[0082] The cylinder liner 12 is installed in the cylinder head 13 and the cylinder body 11, and the cylinder liner 12 defines a cylinder chamber 101. The piston assembly 2 includes a piston frame 21 and a piston 22, and the piston 22 is arranged at the upper end of the piston frame 21. The piston 22 is movably arranged in the cylinder chamber 101 to define a compression chamber 102 in the cylinder chamber 101.

[0083] The air chamber isolation sleeve 16 is installed in the cylinder head 13 and is located above the cylinder sleeve 12. The valve plate can be the valve plate 8 of the above-mentioned embodiment. The pressure plate 17 presses the valve plate 8 onto the air chamber isolation sleeve 16, and the multiple threaded holes on the pressure plate 17 correspond to the multiple mounting holes 841a on the valve plate 8, so that the valve plate 8 can be detachably fixed to the air chamber isolation sleeve 16 by screws.

[0084] The center of the pressure plate 17 is provided with an exhaust hole 104 connected to the compression chamber 102. The central sealing portion 831a of the valve plate 8 is used to open and close the upper port (exhaust valve port) of the exhaust hole 104. After the exhaust valve port is opened, it is connected to the exhaust channel 115. A valve plate limit plate 161 is provided in the air chamber isolation sleeve 16. The valve plate limit plate 161 is located above the central sealing portion 831a to limit the translation range of the central sealing portion 831a. The air chamber isolation sleeve 16 has a plurality of air inlet holes 103 that are evenly arranged around the exhaust hole 104 and connected to the compression chamber 102. The peripheral sealing portion 832a of the valve plate 8 is used to open and close the lower port (intake valve port) of the plurality of air inlet holes 103. After the intake valve port is opened, it is connected to the intake channel 111.

[0085] The sealing cover 18 is mounted on one side of the cylinder body 11. The motor 4 is mounted on the other side of the cylinder body 11, and the motor shaft 41 of the motor 4 is pivotally connected to the lower end of the piston frame 21 through the crankshaft 5.

[0086] When the first-stage compressor 10011 of the embodiment of the present invention is in operation, the valve plate 8 is for peripheral intake and central exhaust, the motor 4 drives the piston assembly 2 to move downward through the crankshaft 5, the external air F enters the intake channel 111 through the intake port 113, and then enters the multiple intake holes 103, the peripheral sealing portion 832a translates downward to open the intake valve port, and the air enters the compression chamber 102 from the intake hole 103, as shown in FIG. Figure 5 As shown in FIG. 1 , when the piston assembly 2 moves to the bottom dead center and then moves upward, the air is compressed in the compression chamber 102. Then, the peripheral sealing portion 832a translates upward to close the air intake valve port, and the central sealing portion 831a translates upward to close the valve plate limit plate 161 to open the exhaust valve port. The compressed air enters the exhaust channel 115 through the exhaust valve port, and finally is discharged into the air storage cylinder 6 through the exhaust port 114. Figure 6 As shown. This cycle repeats.

[0087] A one-stage compressor according to another embodiment of the present invention will be described below with reference to the accompanying drawings.

[0088] like Figure 7-Figure 9 As shown, the first-stage compressor 10011 includes a cylinder 1, a piston assembly 2, a motor 4, a crankshaft 5, an air storage cylinder 6 and a valve plate.

[0089] The cylinder head 13 has an intake port 113 and an exhaust port 114 (not shown in the figure), and the cylinder head 13 has an intake passage 111 connected to the intake port 113 and an exhaust passage 115 connected to the exhaust port 114 .

[0090] The cylinder sleeve 12, the pressure plate 17 and the air chamber isolation sleeve 16 are sequentially installed in the cylinder head 13 from bottom to top, and the lower end of the cylinder sleeve 12 is located in the cylinder body 11. The valve plate can be the valve plate 8 of the above embodiment, and the valve plate 8 is pressed between the pressure plate 17 and the air chamber isolation sleeve 16.

[0091] The central through hole of the cylinder sleeve 12 is the air inlet hole 103 connected to the compression chamber 102. The central sealing portion 831a of the valve plate 8 is used to open and close the lower end (intake valve port) of the air inlet hole 103. The intake valve port is connected to the intake channel 111 after opening.

[0092] The pressure plate 17 has a plurality of exhaust holes 104 evenly arranged around the air inlet hole 103 and connected to the compression chamber 102. The peripheral sealing portion 832a of the valve plate 8 is used to open and close the upper ports (exhaust valve ports) of the plurality of exhaust holes 104. After the exhaust valve ports are opened, they are connected to the exhaust passage 115. An annular valve plate limiting plate 161 is provided on the outer side of the air chamber isolation sleeve 16. The valve plate limiting plate 161 is located above the peripheral sealing portion 832a to limit the translation range of the peripheral sealing portion 832a.

[0093] When the one-stage compressor 10011 of the embodiment of the present invention is in operation, the valve plate 8 is centrally inlet and peripherally exhausted. Other aspects of the one-stage compressor 10011 of the embodiment of the present invention are the same as those of the above embodiment and will not be described in detail here.

[0094] The two-stage compressor according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0095] like Fig.10 and Figure 17-Figure 19 As shown, the two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a drive device 9 and a valve plate.

[0096] like Fig.10 As shown, the cylinder 1 includes a cylinder body 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 body 11 has a first cylinder chamber 1011 and a second cylinder chamber 1012. The piston assembly 2 includes a piston rack 21, a first piston 221 and a second piston 222. The first piston 221 is disposed at the lower end of the piston rack 21, and the first piston 221 is movably fitted in the first cylinder chamber 1011 and defines a first compression chamber 1021 in the first cylinder chamber 1011. The second piston 222 is disposed at the upper end of the piston rack 21, and the second piston 222 is movably fitted in the second cylinder chamber 1012 and defines a second compression chamber 1022 in the second cylinder chamber 1012.

[0097] The valve plate includes a first valve plate 801a and a second valve plate 802a. The first valve plate 801a and the second valve plate 802a may be the valve plate 8 in the above-mentioned embodiment.

[0098] The first cylinder head 131, the first valve plate 191, the first valve sheet 801a and the first pressure plate 171 are connected in sequence from bottom to top and are arranged at the lower end of the cylinder body 11. The first cylinder head 131 has a first air intake port 1131 and a first air exhaust port 1141. The first valve plate 191 has a first air intake passage 1111 connected to the first air intake port 1131 and a first air exhaust passage 1151 connected to the first air exhaust port 1141. The first pressure plate 171 has a first exhaust hole 1041 connected to the first compression chamber 1021 at the center thereof. The central sealing portion 831a of the first valve sheet 801a is used to open and close the lower port (first exhaust valve port) of the first exhaust hole 1041. The first exhaust valve port is connected to the first exhaust passage 1151 after opening. The first valve plate 191 has a plurality of first air inlet holes 1031 which are evenly arranged around the first exhaust hole 1041 and connected to the first compression chamber 1021. The outer sealing portion 832a of the first valve plate 801a is used to open and close the upper ports (first intake valve ports) of the plurality of first air inlet holes 1031. When the first intake valve port is opened, it is connected to the first intake channel 1111.

[0099] The second cylinder head 132, the second valve plate 192, the second valve sheet 802a and the second pressure plate 172 are connected in sequence from top to bottom and are arranged at the upper end of the cylinder body 11. The second cylinder head 132 has a second air intake port 1132 and a second air exhaust port 1142. The second valve plate 192 has a second air intake passage 1112 connected to the second air intake port 1132 and a second air exhaust passage 1152 connected to the second air exhaust port 1142. The second pressure plate 172 is provided with a second air exhaust hole 1042 connected to the second compression chamber 1022 at the center thereof. The central sealing portion 831a of the second valve sheet 802a is used to open and close the upper port (second air exhaust valve port) of the second air exhaust hole 1042. The second air exhaust valve port is connected to the second air exhaust passage 1152 after opening. The second valve plate 192 has a plurality of second air inlet holes 1032 which are evenly arranged around the second exhaust hole 1042 and connected to the second compression chamber 1022. The outer sealing portion 832a of the second valve plate 802a is used to open and close the lower ports (second air intake valve ports) of the plurality of second air inlet holes 1032. When the second air intake valve port is opened, it is connected to the second air intake channel 1112.

[0100] The first exhaust port 1141 and the second intake port 1132 are communicated with each other through a communication passage 201 . The communication passage 201 may be formed in the cylinder block 11 or may be formed by a separate bypass pipe.

[0101] When the two-stage compressor 10012 of the embodiment of the present invention is in operation, the valve plate 8 is for peripheral intake and central exhaust, wherein the piston assembly 2 moves upward, the external air F enters the first intake channel 1111 through the first intake port 1131, and then enters the multiple first intake holes 1031, the peripheral sealing portion 832a of the first valve plate 801a translates upward to open the first intake valve port, and the air enters the first compression chamber 1021 through the first intake hole 1031, and the piston assembly 2 moves to the top dead center and then moves downward, and the air is compressed in the first compression chamber 1021. Then, the peripheral sealing portion 832a of the first valve plate 801a translates downward to close the first intake valve port, and the central sealing portion 831a of the first valve plate 801a translates downward to open the first exhaust valve port, and the compressed air enters the first exhaust channel 1151 through the first exhaust valve port, and then enters the second intake port 1132 from the first exhaust port 1141 through the connecting air channel 201.

[0102] The compressed air in the first compression chamber 1021 enters the plurality of second air inlet holes 1032 through the second air inlet passage 1112, and the peripheral sealing portion 832a of the second valve plate 802a translates downward to open the second air intake valve port, and the air enters the second compression chamber 1022 through the second air intake hole 1032. When the piston assembly 2 moves to the lower dead center and turns upward again, the air is compressed again in the second compression chamber 1022. Then, the peripheral sealing portion 832a of the second valve plate 802a translates upward to close the second air intake valve port, and the central sealing portion 831a of the second valve plate 802a translates upward to open the second exhaust valve port, and the air compressed twice enters the second exhaust passage 1152 through the second exhaust valve port, and is finally discharged through the second exhaust port 1142. For example, the air compressed twice is discharged into a dryer for drying, and the dried gas is supplied to the compressed gas using device. This cycle repeats.

[0103] A slide groove 231 is provided in the middle of the piston frame 21, and a slider 24 is installed in the slide 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, and the motor shaft 41 is pivotally connected to the slider 24 through the planetary reduction assembly 3 and the crankshaft 5. The planetary reduction assembly 3 has a large reduction ratio, and the motor 4 can be a high-speed motor 4, for example, the speed of the motor 4 is greater than 4000 rpm, preferably greater than 8000 rpm, so that the required space is small, reducing the overall volume and weight of the secondary compressor 10012.

[0104] In the embodiment of the present invention, by adopting a combination of a high-speed motor and a planetary reduction assembly, the two-stage compressor can quickly respond to load changes, thereby ensuring the stability and accuracy of the response.

[0105] Compared with ordinary reducers, the planetary reduction assembly has a high transmission efficiency, which can not only reduce the power consumption required by the motor, thereby reducing the energy consumption of the secondary compressor, but also improve the working efficiency of the secondary compressor, and is especially suitable for automotive compressors.

[0106] like Fig.17 and Fig.18 As shown, the motor 4 includes a motor shaft 41, a motor housing 42, a motor rear end cover 43, a rotor 44 and a stator 45. The rear end of the motor housing 42 has an opening, and the other end of the motor housing 42 is provided with a hole for the motor shaft 41 to pass through, and a rotor front bearing 46 is installed in the hole. The motor rear end cover 43 is detachably installed at the opening of the motor housing 42 by bolts, and a groove is provided on the motor rear end cover 43, and a rotor rear bearing 47 is installed in the groove. The motor shaft 41 is connected to the rotor 44, and the part of the motor shaft 41 that passes through the motor housing 42 cooperates with the rotor front bearing 46, and one end of the motor shaft 41 located in the motor housing 42 cooperates with the rotor rear bearing 47.

[0107] like Fig.17 and Fig.18 As shown, the planetary reduction assembly 3 includes an inner gear ring 31, a planet carrier 32, a sun gear 33 and a plurality of planetary gears 34. The planetary gears 34 are rotatably mounted on the planet carrier 32 via a planetary gear shaft 35, the sun gear 33 is mounted 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 planetary gears 34 are respectively meshed with the sun gear 33 and the inner gear ring 31, and the crankshaft 5 is connected to the planet carrier 32.

[0108] The inner gear ring 31 is configured as a fixed gear of the planetary reduction assembly 3. The inner gear ring 31 includes a cylinder 311 and an annular boss 312. The annular boss 312 is disposed on the inner peripheral wall of the cylinder 311. Internal teeth are formed on the inner peripheral wall surface of the annular boss 312. The annular boss 312 defines a matching hole 301 in the cylinder 311. The matching hole 301 is located at one end of the cylinder 311 close to the motor 4. The end of the motor housing 42 is provided with a matching portion 401 with a reduced diameter. The matching portion 401 is matched in the matching hole 301. One end of the cylinder 311 is butted with one end of the motor housing 42. The outer peripheral surface of the cylinder 311 is flush with the outer peripheral surface of the motor housing 42.

[0109] Through the close fit between the matching hole 301 and the matching part 401, the distance between the planetary reduction assembly 3 and the motor 4 is reduced, the compactness of the structure is improved, the volume and the occupied space are reduced, and the volume of the secondary compressor 10012 can be further reduced. In addition, the outer peripheral surface of the cylinder 311 is flush with the outer peripheral surface of the motor housing 42, which also improves the overall visual effect. Further, a sealing ring 48 or other sealing elements can be provided between the matching hole 301 and the matching part 401 to improve the sealing between the planetary reduction assembly 3 and the motor 4.

[0110] like Fig.18 As shown, the end face ( Fig.18 An assembly groove 321 is provided on the middle right end surface, and a rear bearing 322 is installed in the assembly groove 321. One end of the motor shaft 41 extending out of the motor housing 42 cooperates with the rear bearing 322.

[0111] The motor shaft 41 drives the sun gear 33 to rotate around the central axis X1. The central axis X1 is the central axis of the motor shaft 41, the sun gear 33 and the planet carrier 32. The planet gear 34 revolves around the central axis X1 and rotates around the central axis of the planet gear shaft 35, so that the planet carrier 32 rotates around the central axis X1.

[0112] Preferably, the teeth of the inner ring gear 31 and the planetary gear 34 are helical teeth, so as to reduce speed, increase torque and reduce noise.

[0113] like Figure 17-Figure 19 As shown, the crankshaft 5 includes a main shaft portion 51 and an eccentric shaft portion 52. One end of the main shaft portion 51 is connected to the planet carrier 32. The central axis of the main shaft portion 51 is coaxial with the 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 cooperates with the front bearing 112.

[0114] Preferably, the main shaft portion 51 and the planetary carrier 32 can be formed integrally, thereby improving the overall strength and durability of the crankshaft 5, while also reducing the workload of assembling and maintaining the crankshaft 5, and improving the compactness of the structure, reducing the volume and occupied space, and further reducing the volume of the secondary compressor 10012.

[0115] The main shaft portion 51 is provided with an assembly hole 511, one end of the eccentric shaft portion 52 is fitted in the assembly hole 511, and the other end of the eccentric shaft portion 52 extends out from the assembly hole 511. The center axis X2 of the eccentric shaft portion 52 is eccentric relative to the center axis X1 of the main shaft portion 51, and the other end of the eccentric shaft portion 52 is pivotally connected to the slider 24 of the piston frame 21.

[0116] 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 an unbalanced force when rotating. For this reason, a balancing block 53 is provided on the main shaft portion 51 to reduce or eliminate the vibration caused by the imbalance of the crankshaft 5, improve the stability and reliability of the operation of the crankshaft 5, and reduce the noise generated by the vibration of the crankshaft 5.

[0117] A two-stage compressor according to another embodiment of the present invention will be described below with reference to the accompanying drawings.

[0118] like Fig.11 and Figure 17-Figure 19 As shown, the two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a drive device 9 and a valve plate.

[0119] like Fig.11 As shown, the cylinder 1 includes a cylinder body 11, a first cylinder head 131, a first valve plate 191, a second cylinder head 132 and a second valve plate 192. The cylinder body 11 has a first cylinder chamber 1011 and a second cylinder chamber 1012. The piston assembly 2 includes a piston rack 21, a first piston 221 and a second piston 222. The first piston 221 is movably fitted in the first cylinder chamber 1011 and defines a first compression chamber 1021 in the first cylinder chamber 1011, and the second piston 222 is movably fitted in the second cylinder chamber 1012 and defines a second compression chamber 1022 in the second cylinder chamber 1012.

[0120] The valve plate includes a first valve plate 801a and a second valve plate 802a. The first valve plate 801a and the second valve plate 802a may be the valve plate 8 in the above-mentioned embodiment.

[0121] The first cylinder head 131, the first valve sheet 801a and the first valve plate 191 are connected in sequence from bottom to top and are arranged at the lower end of the cylinder body 11. The first cylinder head 131 has a first air inlet 1031 connected to the first compression chamber 1021 at the center, and the central sealing portion 831a of the first valve sheet 801a is used to open and close the upper port (first air intake valve port) of the first air inlet 1031. The first valve plate 191 has a plurality of first exhaust holes 1041 uniformly arranged around the first air inlet 1031 and connected to the first compression chamber 1021, and the peripheral sealing portion 832a of the first valve sheet 801a is used to open and close the lower ports (first exhaust valve ports) of the plurality of first exhaust holes 1041. The first cylinder head 131 has a first exhaust port 1141, and a first exhaust channel 1151 connected to the first exhaust port 1141 is defined between the first valve plate 191 and the first cylinder head 131. The first exhaust valve port is connected to the first exhaust channel 1151 after opening.

[0122] The second cylinder head 132, the second valve plate 802a and the second valve plate 192 are connected in sequence from top to bottom and are arranged at the upper end of the cylinder body 11. The second cylinder head 132 has a second air inlet 1032 connected to the second compression chamber 1022 at the center, and the central sealing portion 831a of the second valve plate 802a is used to open and close the lower port (second air intake valve port) of the second air inlet 1032. The second valve plate 192 has a plurality of second exhaust holes 1042 uniformly arranged around the second air inlet 1032 and connected to the second compression chamber 1022, and the peripheral sealing portion 832a of the second valve plate 802a is used to open and close the upper ports (second exhaust valve ports) of the plurality of second exhaust holes 1042. The second cylinder head 132 has a second exhaust port 1142, and a second exhaust channel 1152 connected to the second exhaust port 1142 is defined between the second valve plate 192 and the second cylinder head 132. The second exhaust valve port is connected to the second exhaust channel 1152 after opening. The first exhaust port 1141 and the second intake hole 1032 are communicated with each other through the communication passage 201 .

[0123] When the two-stage compressor 10012 of the embodiment of the present invention is in operation, the valve plate 8 is centrally inlet and peripherally exhausted. Other aspects of the two-stage compressor 10012 of the embodiment of the present invention may be the same as those of the above embodiment and will not be described in detail here.

[0124] A two-stage compressor according to another embodiment of the present invention will be described below with reference to the accompanying drawings.

[0125] like Fig.12 as well as Figure 14-Figure 19 As shown, the two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a driving device 9, a first valve plate 801a and a second valve plate 802b.

[0126] The cylinder 1 includes a cylinder body 11 , and the cylinder body 11 has a first cylinder chamber 1011 and a second cylinder chamber 1012 .

[0127] 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 chamber 1011 and defines a first compression chamber 1021 in the first cylinder chamber 1011, and the second piston 222 is movably fitted in the second cylinder chamber 1012 and defines a second compression chamber 1022 in the second cylinder chamber 1012.

[0128] The driving device 9 is connected to the piston frame 21 and is used to drive the piston 22 to move in the cylinder chamber 101. In the embodiment of the present invention, other aspects of the driving device 9 may be the same as those in the above embodiment, and will not be described in detail here.

[0129] The cylinder body 11 has an air inlet 113, and an air inlet passage 111 connected to the air inlet 113 is provided in the cylinder body 11. The cylinder body 11 has a second exhaust hole 1042 connected to the second compression chamber 1022, and an exhaust valve 15 is provided at the second exhaust hole 1042. The first compression chamber 1021 and the second compression chamber 1022 are connected through the connecting air passage 201 that penetrates the first piston 221, the piston rack 21 and the second piston 222. The first piston 221 has a first exhaust hole 1041 at the center, and the first piston 221 has a first exhaust passage 1151 connected to the first exhaust hole 1041. The first compression chamber 1021 is connected to the connecting air passage 201 through the first exhaust hole 1041 and the first exhaust passage 1151. The first piston 221 has a plurality of first air inlet holes 1031 surrounding the first exhaust hole 1041, and the air inlet passage 111 is connected to the first compression chamber 1021 through the plurality of first air inlet holes 1031. The portion of the communicating air passage 201 that passes through the second piston 222 constitutes a second air inlet hole 1032 .

[0130] The first valve disc 801a may be the valve disc 8 in the above embodiment, and has an air intake function and an air exhaust function. The first valve disc 801a is mounted on the first piston 221 through the pressing plate 17, and the central sealing portion 831a of the first valve disc 801a is used to open and close the upper port (first exhaust valve port) of the first exhaust hole 1041, and the peripheral sealing portion 832a of the first valve disc 801a is used to open and close the lower ports (first air intake valve ports) of the plurality of first air intake holes 1031.

[0131] The second valve plate 802b is disposed on the second piston 222, and the sealing portion 83b of the second valve plate 802b is used to open and close the upper port (second air intake valve port) of the second air inlet hole 1032. The second valve plate 802b can be called an air intake valve plate, and the second valve plate 802b has an air intake function.

[0132] In some examples, such as Figure 14-16 As shown, the second valve plate 802b includes a valve plate body 81b, and the valve plate body 81b is provided with a slot 82b, and the slot 82b penetrates the valve plate body 81b along the thickness direction of the valve plate body 81b. The slot 82b divides the valve plate body 81b into a 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, the center of the sealing portion 83b coincides with the center of the mounting portion 84b, and the mounting portion 84b is arranged around the sealing portion 83b.

[0133] The swing arm 85b is an elastic arm, and the width of the swing arm 85b is substantially constant in its length direction. The first end of the swing arm 85b is connected to the sealing portion 83b, and the second end of the swing arm 85b is connected to the mounting portion 84b.

[0134] When the number of the swing arms 85b is an even number, 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, and the two swing arms 85b in the same pair of swing arms 85b are centrally symmetrical with respect to the center of the sealing portion 83b, that is, one swing arm 85b rotates 180 degrees and overlaps with the other swing arm 85b. When the number of the swing arms 85b is an odd number, the plurality of swing arms 85b are uniformly arranged around the center of the sealing portion 83b along the circumference of the sealing portion 83b, for example, the number of the swing arms 85b is N, N is an odd number, and of two adjacent swing arms 85b, one swing arm 85b rotates 360 / N degrees around the center of the sealing portion 83b and overlaps with the other swing arm 85b.

[0135] In some specific examples, such as Fig.14 and Fig.15 As shown, 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, and there are two swing arms 85b that are centrally symmetrical 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 is connected to the mounting portion 84b through a second connecting portion 87b.

[0136] There are two slots 82b, each of which includes an outer slot segment 821b, an inner slot segment 822b, and a connecting slot segment 823b connecting the outer slot segment 821b and the inner slot segment 822b. Fig.15 As shown, one swing arm 85b is located between the outer slot segment 821b of one slot 82b and the inner slot segment 822b of another slot 82b, and the other swing arm 85b is located between the inner slot segment 822b of the one slot 82b and the outer slot segment 821b of the other slot 82b.

[0137] The outer slot segment 821b and the inner slot segment 822b are both arc-shaped, and the connecting slot segment 823b is composed of a plurality of arc segments protruding in different directions and smoothly connected to each other. The center angle θ of the inner slot segment 822b and the outer slot segment 821b is equal, and preferably, the center angle θ is greater than or equal to 120 degrees and less than or equal to 150 degrees. Fig.14 and Fig.15 In the embodiment shown, the central angle θ is 120 degrees.

[0138] In other specific examples, such as Fig.16 As shown, 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, and there are three swing arms 85b and they are evenly arranged around the center of the sealing portion 83b along the circumference of the sealing portion 83b. The swing arm 85b is connected to the sealing portion 83b through the first connecting portion 86b and connected to the mounting portion 84b through the second connecting portion 87b.

[0139] There are three slots 82b, each of which includes an outer slot segment 821b, an inner slot segment 822b, and a connecting slot segment 823b connecting the outer slot segment 821b and the inner slot segment 822b. Fig.16 As shown, each swing arm 85b is located between the outer slot segment 821b of one slot 82b and the inner slot segment 822b of another adjacent slot 82b. The outer slot segment 821b and the inner slot segment 822b are both arc-shaped, and the center angle θ of the inner slot segment 822b and the outer slot segment 821b is equal. Preferably, the center angle θ is greater than or equal to 60 degrees and less than or equal to 90 degrees.

[0140] When the two-stage compressor 10012 of the embodiment of the present invention is in operation, the first valve plate 801a is for peripheral intake and central exhaust, wherein the piston assembly 2 moves upward, the external air F enters the intake channel 111 through the intake port 113, and then enters the plurality of first intake holes 1031, the peripheral sealing portion 832a of the first valve plate 801a translates downward to open the first intake valve port, the air enters the first compression chamber 1021 through the first intake hole 1031, the piston assembly 2 moves to the top dead center and then moves downward, the air is compressed in the first compression chamber 1021. Then, the peripheral sealing portion 832a of the first valve plate 801a translates upward to close the first intake valve port, the central sealing portion 831a of the first valve plate 801a translates upward to open the first exhaust valve port, and the compressed air enters the connecting airway 201 from the first exhaust valve port through the first exhaust channel 1151.

[0141] Next, the sealing portion 83b of the second valve plate 802b translates upward to open the second air intake valve port, and the air enters the second compression chamber 1022 through the second air inlet hole 1032. When the piston assembly 2 moves to the bottom dead center and then moves upward again, 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 exhaust hole 1042. This cycle repeats.

[0142] The following describes a two-stage compressor 10012 according to another embodiment of the present invention in conjunction with the accompanying drawings.

[0143] like Figure 13-Figure 19 As shown, the two-stage compressor 10012 includes a cylinder 1, a piston assembly 2, a driving device 9, a first valve plate 801a and a second valve plate 802b.

[0144] The first piston 221 has a first air inlet hole 1031 at its center, and the air inlet channel 111 is connected to the first compression chamber 1021 through the first air inlet hole 1031. The first piston 221 has a plurality of first exhaust holes 1041 surrounding the first air inlet hole 1031, and the first piston 221 has a first exhaust channel 1151 connected to the first exhaust holes 1041.

[0145] The first valve plate 801a may be the valve plate 8 in the above embodiment, and has an air intake function and an air exhaust function. The central sealing portion 831a of the first valve plate 801a is used to open and close the lower port (first air intake valve port) of the first air intake hole 1031, and the peripheral sealing portion 832a of the first valve plate 801a is used to open and close the upper ports (first air exhaust valve ports) of the plurality of first air exhaust holes 1041.

[0146] The second valve plate 802b may be the intake valve plate in the above embodiment and has an intake function. The second valve plate 802b is disposed on the second piston 222, and the sealing portion 83b of the second valve plate 802b is used to open and close the upper end of the second exhaust hole 1042 (the second intake valve port).

[0147] When the two-stage compressor 10012 of the embodiment of the present invention is in operation, the first valve plate 801a is centrally inlet and peripherally exhausted. Other aspects of the two-stage compressor 10012 of the embodiment of the present invention may be the same as those of the above embodiment, and will not be described in detail here.

[0148] The vehicle according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0149] like Fig. 20 As shown, the vehicle 100 of the embodiment of the present invention includes a pneumatic device 1002 and a compressor. The compressor may be the compressor 1001 of the above embodiment. The compressor 1001 is connected to the pneumatic device 1002 and is used 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.

[0150] The vehicle of the embodiment of the present invention has a compressor with a compact structure, small size, light weight, miniaturization, and high applicability, thereby effectively solving the problems of large size and slow starting response of vehicle compressors in related technologies. Therefore, the compressor of the embodiment of the present invention can provide a more efficient, compact and reliable air supply solution for the vehicle's air suspension system.

[0151] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0152] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0153] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0154] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0155] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0156] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A valve sheet, characterized in that: It includes a sheet body, the sheet body is provided with a slot, the slot penetrates the sheet body along the thickness direction of the sheet body, the slot divides the sheet body into a central sealing part, a mounting part, a peripheral sealing part, a plurality of first swing arms and a plurality of second swing arms, the central sealing part, the mounting part and the peripheral sealing part are concentric with each other, the mounting part surrounds the central sealing part, the peripheral sealing part surrounds the mounting part, the first swing arm is located between the peripheral sealing part and the mounting part, the first end of the first swing arm is connected to the peripheral sealing part, the second end of the first swing arm is connected to the mounting part, the second swing arm is located between the central sealing part and the mounting part, the first end of the second swing arm is connected to the central sealing part, and the second end of the second swing arm is connected to the mounting part.

2. The valve sheet according to claim 1, characterized in that: When the number of the first swing arms is an even number, the plurality of the first swing arms are arranged in pairs, and the two swing arms in the same pair of swing arms are centrally symmetrical with respect to the center of the central sealing portion, and when the number of the first swing arms is an odd number, the plurality of the first swing arms are uniformly arranged around the center of the central sealing portion along the circumference of the central sealing portion; When the number of the second swing arms is an even number, the plurality of the second swing arms are arranged in pairs, and the two swing arms in the same pair of swing arms are centrally symmetrical to each other relative to the center of the central sealing part. When the number of the second swing arms is an odd number, the plurality of the second swing arms are evenly arranged around the center of the central sealing part along the circumference of the central sealing part.

3. The valve sheet according to claim 2, characterized in that: The central sealing portion is circular, the mounting portion and the peripheral sealing portion are both annular, and the first swing arm and the second swing arm are both arc-shaped and concentric with the central sealing portion.

4. The valve sheet according to claim 3, characterized in that: The number of the first swing arms is three, the number of the second swing arms is two, and the slots include three first slots and two second slots. The first slot includes an arc-shaped first outer slot segment, an arc-shaped first inner slot segment, and a first transition slot segment connected between the first outer slot segment and the first inner slot segment, wherein any first swing arm is located between the first outer slot segment of one first slot and the inner slot segment of another first slot, The second slot includes an arcuate second outer slot segment, an arcuate second inner slot segment and a second transition slot segment connected between the second outer slot segment and the second inner slot segment, a second swing arm is located between the second outer slot segment of one second slot and the second inner slot segment of another second slot, and another second swing arm is located between the second inner slot segment of the one second slot and the second outer slot segment of the other second slot.

5. The valve sheet according to claim 1, characterized in that: The mounting portion is provided with a plurality of mounting holes, and the plurality of mounting holes are evenly arranged around the center of the central sealing portion along the circumference of the central sealing portion, and at least a portion of the mounting holes are arranged adjacent to the second end of the first swing arm and the second end of the second swing arm.

6. The valve sheet according to any one of claims 1 to 5, characterized in that: The width H of the slot is greater than or equal to 1 mm and less than or equal to 4 mm, and the thickness T of the sheet is greater than or equal to 0.1 mm and less than or equal to 0.5 mm.

7. A compressor, characterized in that: include: A cylinder, wherein a compression chamber is provided in the cylinder, and the compression chamber has an air inlet and an air outlet; A piston assembly, the piston assembly comprising a piston and a piston rack, the piston being disposed at at least one end of the piston rack and used for compressing the gas in the compression chamber; A driving device, the driving device is connected to the piston frame and is used to drive the piston to move in the cylinder; A valve plate, wherein the valve plate is a valve plate according to any one of claims 1 to 6, wherein the valve plate is arranged on the cylinder, wherein one of the central sealing portion and the peripheral sealing portion is used to open and close the air inlet hole, and the other of the central sealing portion and the peripheral sealing portion is used to open and close the air outlet hole.

8. The compressor according to claim 7, characterized in that There are multiple exhaust holes and they are evenly arranged around the air inlet hole, or there are multiple air inlet holes and they are evenly arranged around the exhaust hole.

9. The compressor according to claim 7, characterized in that The number of the compression chamber is one, and the number of the piston is one.

10. The compressor according to claim 7, characterized in that The compression chamber includes a first compression chamber and a second compression chamber, the first compression chamber has a first air inlet hole and a first air exhaust hole, the second compression chamber has a second air inlet hole and a second air exhaust hole, the first compression chamber and the second compression chamber are connected to each other through a connecting air passage provided in the cylinder or formed by a separate bypass pipe, the piston includes a first piston and a second piston, the first piston is provided at a first end of the piston rack, and is used to compress the gas in the first compression chamber, the second piston is provided at a second end of the piston rack, and is used to compress the gas in the second compression chamber, The valve plate includes a first valve plate and a second valve plate, one of a central sealing portion and a peripheral sealing portion of the first valve plate is used to open and close the first air inlet hole, the other of the central sealing portion and the peripheral sealing portion of the first valve plate is used to open and close the first exhaust hole, one of the central sealing portion and the peripheral sealing portion of the second valve plate is used to open and close the second air inlet hole, and the other of the central sealing portion and the peripheral sealing portion of the second valve plate is used to open and close the second exhaust hole.

11. A compressor, characterized in that: include: A cylinder, wherein the cylinder has a first compression chamber and a second compression chamber, the first compression chamber has a first air inlet hole and a first air outlet hole, and the second compression chamber has a second air inlet hole and a second air outlet hole; A piston assembly, the piston assembly comprising a piston and a piston frame, the piston being movably disposed in the cylinder and comprising a first piston and a second piston, the first piston being disposed at a first end of the piston frame and used for compressing gas in the first compression chamber, the second piston being disposed at a second end of the piston frame and used for compressing gas in the second compression chamber; A driving device, the driving device is connected to the piston frame and is used to drive the piston to move in the cylinder; a communicating air passage, the communicating air passage penetrating the first piston, the piston rack and the second piston, and used for connecting the first compression chamber and the second compression chamber, the communicating air passage constituting the second air inlet; a first valve sheet, the first valve sheet being arranged on the first piston, the first valve sheet being the valve sheet according to any one of claims 1 to 6, wherein one of the central sealing portion and the peripheral sealing portion is used to open and close the first air inlet hole, and the other of the central sealing portion and the peripheral sealing portion is used to open and close the first air outlet hole; A second valve plate, wherein the second valve plate is disposed on the second piston and is used for opening and sealing the second air inlet hole.

12. The compressor according to claim 11, characterized in that The second valve plate includes a valve plate body, which is provided with a slot, and the slot penetrates the valve plate body along the thickness direction of the valve plate body, and the slot divides the valve plate body into a sealing part, a mounting part and a plurality of swing arms for opening and sealing the second air inlet hole, and the mounting part is arranged around the sealing part and is concentric with each other, the first end of the swing arm is connected to the sealing part, and the second end of the swing arm is connected to the mounting part, wherein when the number of the swing arms is an even number, the plurality of swing arms are arranged in pairs, and the two swing arms in the same pair of swing arms are centrally symmetrical to each other relative to the center of the sealing part, wherein when the number of the swing arms is an odd number, the plurality of swing arms are evenly arranged around the center of the sealing part along the circumference of the sealing part.

13. The compressor according to claim 12, characterized in that The sealing portion is circular, the mounting portion is annular, the swing arm is arc-shaped, there are two swing arms and they are centrally symmetrical with each other relative to the center of the sealing portion, there are two slots, each slot includes an arc-shaped outer slot segment, an arc-shaped inner slot segment and a connecting slot segment connected between the outer slot segment and the inner slot segment, one swing arm is located between the outer slot segment of one slot and the inner slot segment of another slot, and the other swing arm is located between the inner slot segment of the one slot and the outer slot segment of the other slot.

14. The compressor according to claim 13, characterized in that The center angles (θ) of the inner slot segment and the outer slot segment are equal, and the circular angle is greater than or equal to 120 degrees and less than or equal to 150 degrees.

15. The compressor according to claim 12, characterized in that The sealing portion is circular, the mounting portion is annular, the swing arm is arc-shaped, the swing arm is arc-shaped, there are three swing arms and they are evenly arranged around the center of the sealing portion along the circumference of the sealing portion, there are three slots, each slot includes an arc-shaped outer slot segment, an arc-shaped inner slot segment and a connecting slot segment connected between the outer slot segment and the inner slot segment, and each swing arm is located between the outer slot segment of one slot and the inner slot segment of another slot.

16. The compressor according to any one of claims 7 to 15, characterized in that: The driving device comprises a motor and a crankshaft, and the motor shaft of the motor is connected to the piston frame through the crankshaft.

17. The compressor according to claim 16, characterized in that The drive device also includes a planetary reduction assembly connected between the motor and the crankshaft.

18. The compressor according to claim 17, characterized in that The planetary reduction assembly includes an inner ring gear, a planet carrier, a sun gear and a plurality of planetary gears, the planetary gears are rotatably mounted on the planet carrier via a planetary gear shaft, the sun gear is mounted on the motor shaft, the inner ring gear is connected to the motor housing of the motor, the planetary gears are respectively meshed with the sun gear and the inner ring gear, the crankshaft includes a main shaft portion and an eccentric shaft portion, the main shaft portion is connected to the planet carrier, the central axis of the main shaft portion is coaxial with the central axis of the planet carrier, the central axis of the inner ring gear and the central axis of the motor shaft, the eccentric shaft portion is connected to the main shaft portion, the 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, characterized in that A balancing block is provided on the main shaft portion, the planetary carrier is formed integrally with the main shaft portion, the main shaft portion is provided with an assembly hole, the eccentric shaft portion is fitted in the assembly hole and one end of the eccentric shaft portion extends out of the assembly hole, the inner gear ring comprises a cylinder body and an annular boss, the annular boss is provided on the inner peripheral wall of the cylinder body, the annular boss defines a matching hole located at one end of the cylinder body in the cylinder body, internal teeth are formed on the inner peripheral wall surface of the annular boss, a matching portion with a reduced diameter is provided at the end of the motor housing, the matching portion is fitted in the matching hole, the one end of the cylinder body is butted against one end of the motor housing, and the outer peripheral surface of the cylinder body is flush with the outer peripheral surface of the motor housing.

20. A vehicle, characterized in that: include: A pneumatic device and a compressor according to any one of claims 7 to 19, wherein the compressor is connected to the pneumatic device and is used to supply compressed gas to the pneumatic device.

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