Integrated piston cylinder of air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to an integrated piston cylinder of an air compressor. The integrated piston cylinder of the air compressor comprises a cylinder body, a plurality of first radiating ribs are arranged outside the cylinder body, and the first radiating ribs are parallel to one another and are arranged at intervals; the device further comprises a fixing plate, and the two ends of the fixing plate are connected with the cylinder body in the extending direction of the fixing plate. The part, facing the cylinder body, of the first radiating rib is a first part, the part, deviating from the cylinder body, of the first radiating rib is a second part, and a distance exists between the first part and the second part; the direction from the first part to the second part is the extension direction of the first radiating ribs, and the extension direction of the first radiating ribs is perpendicular to the extension direction of the fixing plate; the first part of any first radiating rib is connected with the outer surface of the cylinder body, and the second part of any first radiating rib is connected with the fixing plate. The utility model solves the technical problem of how to reduce the vibration noise of the radiating ribs in the process that the cylinder body drives the radiating ribs to vibrate in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of air compressor technology, and in particular to an integrated piston cylinder for an air compressor. Background Technology

[0002] A reciprocating air compressor is a mechanical device that compresses gas by the reciprocating motion of a piston inside a cylinder. It is widely used in industries such as manufacturing and automotive repair.

[0003] In existing air compressors (hereinafter referred to as air compressors), the air compressor includes a cylinder. Several cooling fins are provided on the outer surface of the cylinder for heat dissipation. Typically, the cooling fins are connected to the cylinder in the following manner: the cooling fin has a first part and a second part. The first part is connected to the outer wall of the cylinder and is usually integrally formed, while the second part is freely suspended. Thus, the cooling fin is essentially a cantilever beam. During the operation of the air compressor, the reciprocating motion of the piston within the cylinder or the rotation of the motor shaft will cause the cylinder to vibrate. This vibration energy is transmitted to the cooling fins. As a cantilever beam, the first part of the cooling fin will vibrate synchronously with the cylinder, while the second part will vibrate with a different amplitude than the first part. For example, the amplitude of the first part may be the first amplitude, while the amplitude of the second part may be the second amplitude, which is smaller than the first amplitude. In other words, for the same cooling fin, the amplitudes of vibration at both ends are inconsistent, which will increase the vibration noise of the cooling fin.

[0004] Therefore, the technical problem in the prior art is how to reduce the vibration noise of the cooling fins during the process of the cylinder driving the cooling fins to vibrate. Utility Model Content

[0005] To address the technical problem of reducing vibration noise of the cooling fins during the vibration of the cylinder body, this utility model provides an integrated piston cylinder for an air compressor.

[0006] This utility model is achieved through the following technical solution:

[0007] An integrated piston cylinder for an air compressor includes a cylinder body, and a plurality of first heat dissipation fins are provided on the outside of the cylinder body, the plurality of first heat dissipation fins being arranged parallel to each other and spaced apart.

[0008] It also includes a fixing plate, with both ends of the fixing plate connected to the cylinder body along the extension direction of the fixing plate;

[0009] For any one of the first heat dissipation ribs, the part towards the cylinder is a first part, the part away from the cylinder is a second part, and there is a distance between the first part and the second part; the direction of the first part pointing to the second part is the extension direction of the first heat dissipation rib, and the extension direction of the first heat dissipation rib is perpendicular to the extension direction of the fixed plate;

[0010] The first part of any one of the first heat dissipation ribs is connected with the outer surface of the cylinder, and the second part of any one of the first heat dissipation ribs is connected with the fixed plate.

[0011] Further, it further comprises a low-pressure cylinder cover, the low-pressure cylinder cover is integrally formed with the preset part of the cylinder, and the low-pressure cylinder cover and the preset part of the cylinder jointly limit the formation of a first cavity;

[0012] A low-pressure valve plate is detachably arranged in the first cavity, and the first cavity is divided into a first compression chamber and a first exhaust chamber by the low-pressure valve plate;

[0013] The side surface of the low-pressure cylinder cover towards the low-pressure valve plate is a first surface, and the first surface is part of the inner wall of the cavity of the first exhaust chamber.

[0014] Further, a plurality of second heat dissipation ribs are arranged in the first exhaust chamber, and the plurality of second heat dissipation ribs are arranged at intervals;

[0015] The extension direction of the second heat dissipation rib is the direction of the first exhaust chamber pointing to the first compression chamber, and along the extension direction of the second heat dissipation rib, the two ends of the second heat dissipation rib are a first end and a second end respectively;

[0016] Among them, the first end is connected with the first surface, and the second end points to the low-pressure valve plate and has a spacing with the low-pressure valve plate.

[0017] Further, a plurality of convex ribs are arranged on the side of the low-pressure cylinder cover away from the first exhaust chamber.

[0018] Further, the low-pressure valve plate is provided with a low-pressure valve hole, and the extension direction of the low-pressure valve hole is along the direction of the first compression chamber pointing to the first exhaust chamber;

[0019] The low-pressure valve plate is further provided with a low-pressure exhaust valve piece, the low-pressure exhaust valve piece is connected with the low-pressure valve plate and can shield the low-pressure valve hole, and the low-pressure exhaust valve piece is used for unidirectionally conducting the low-pressure valve hole from the first compression chamber to the first exhaust chamber.

[0020] Further, it further comprises a low-pressure limit plate, and the low-pressure limit plate is detachably connected with the low-pressure valve plate; from the direction of the first compression chamber pointing to the first exhaust chamber, the low-pressure exhaust valve piece is located between the low-pressure limit plate and the low-pressure valve plate;

[0021] The side surface of the low-pressure limit plate towards the low-pressure valve plate is a first arc surface, the first arc surface is a poor arc, and the arching direction of the first arc surface is away from the low-pressure valve plate;

[0022] The side surface of the low-pressure valve plate towards the low-pressure limit plate is a first plane; the maximum distance between the first arc surface and the first plane in the direction from the first compression cavity to the first exhaust cavity is configured as a preset distance;

[0023] The first arc surface and the first plane jointly enclose a limiting space, the shape of the limiting space is fixed and cannot be changed; the deformation range of the low-pressure exhaust valve piece is limited within the limiting space.

[0024] Further, a second cavity is arranged in the cylinder body, the extension direction of the second cavity is consistent with the extension direction of the first cavity;

[0025] The high-pressure valve plate and the partition plate are arranged in the second cavity and are integrally processed with the cavity inner wall of the second cavity, the second cavity is divided into a communication cavity, a second compression cavity and a second exhaust cavity by the high-pressure valve plate and the partition plate; along the extension direction of the second cavity, the communication cavity and the second exhaust cavity are located on the same side of the high-pressure valve plate, and the second compression cavity is located on the other side of the high-pressure valve plate; and the communication cavity is located between the first exhaust cavity and the second compression cavity.

[0026] Further, a connecting channel is arranged on the high-pressure valve plate, the connecting channel is located between the communication cavity and the second compression cavity; a second intake valve piece is further arranged on the high-pressure valve plate, the second intake valve piece is connected with the high-pressure valve plate and can deform to shield an end opening of the connecting channel, and the second intake valve piece is used for unidirectionally conducting the connecting channel from the communication cavity to the second compression cavity.

[0027] Further, a high-pressure valve hole is further arranged on the high-pressure valve plate, the high-pressure valve hole is located between the second compression cavity and the second exhaust cavity;

[0028] A high-pressure exhaust valve piece is further arranged on the high-pressure valve plate, the high-pressure exhaust valve piece is connected with the high-pressure valve plate and can deform to shield the high-pressure valve hole, and the high-pressure exhaust valve piece is used for unidirectionally conducting the high-pressure valve hole from the second compression cavity to the second exhaust cavity.

[0029] Further, a high-pressure limit plate is further included, the high-pressure limit plate is detachably connected with the high-pressure valve plate;

[0030] In the direction from the second compression cavity to the second exhaust cavity, the high-pressure exhaust valve piece is located between the high-pressure limit plate and the high-pressure valve plate, the side surface of the high-pressure limit plate towards the high-pressure valve plate is a first limiting plane, the side surface of the high-pressure valve plate towards the high-pressure limit plate is provided with a second limiting plane, the first limiting plane and the second limiting plane are parallel to each other and have a preset interval, and the deformation range of the high-pressure exhaust valve piece is limited within the preset interval.

[0031] Compared with the prior art, the advantages of the utility model lie in:

[0032] The first radiating rib in the utility model is equivalent to the radiating rib in the prior art; the first part of the first radiating rib is connected with the outer surface of the cylinder body, the second part is connected with the fixed plate, the direction of the first part pointing to the second part is the extension direction of the first radiating rib; and the fixed plate is connected with the cylinder body at both ends along the extension direction, and the extension direction of the fixed plate is perpendicular to the extension direction of the first radiating rib; therefore, in the utility model, the fixed plate is added compared with the prior art, so that the first radiating rib is changed from the cantilever beam in the prior art to the simply supported beam in the utility model; the simply supported beam means that the two ends of the beam are placed on the support; in the process of cylinder body vibration, the first part of the first radiating rib directly connected with the cylinder body and the fixed plate all vibrate synchronously, and the fixed plate is directly connected with the second part of the first radiating rib at the same time, which will lead to the fact that the cylinder body, the first part and the second part of the first radiating rib and the fixed plate all vibrate synchronously, so that the first part and the second part of the first radiating rib vibrate synchronously, the amplitude difference between the first part and the second part is reduced or even disappears, and finally the vibration noise of the radiating rib is reduced.

[0033] In the utility model, the low-pressure cylinder cover and the preset part of the cylinder body are integrally formed, for example, mold casting, the low-pressure valve plate is detachably connected with the cylinder body, and the low-pressure cylinder cover, the low-pressure valve plate and the cylinder body jointly limit the formation of the primary compression cavity and the primary exhaust cavity; in the utility model, the connection mode between the low-pressure cylinder cover and the cylinder body is changed from the detachable connection in the prior art to the integrally formed processing, the sealing effect between the low-pressure cylinder cover and the cylinder body is realized through the integrally formed processing mode, the use of sealing rings or sealing gaskets and other materials for sealing is avoided, and the later maintenance and maintenance costs are saved.

[0034] In the utility model, the compressed air entering the primary exhaust cavity is in contact with the second radiating rib, the second radiating rib absorbs the heat of the air in the primary exhaust cavity, and thus plays a heat dissipation role on the air in the primary exhaust cavity.

[0035] In the utility model, the low-pressure limit plate is arranged, the deformation range of the low-pressure exhaust valve piece is limited in the limiting space enclosed by the first arc surface and the first plane, so as to limit the maximum amplitude of the arching of the low-pressure exhaust valve piece, avoid the situation that the low-pressure exhaust valve piece cannot recover the deformation and thus cannot block the low-pressure valve hole due to the too large arching amplitude of the low-pressure exhaust valve piece.

[0036] The utility model discloses same high pressure valve plate and the technical means of the cavity inner wall integration of second cavity, guarantee the air tightness between high pressure valve plate and the cavity inner wall of second cavity, avoid the mode of setting sealing ring or sealing gasket between high pressure valve plate and the cavity inner wall of second cavity in prior art, save the later maintenance and maintenance cost.

[0037] Six, in the utility model, the restriction principle of high pressure limit board and low pressure limit board is similar, and here is not superfluous, in the utility model, the deformation range of high pressure exhaust valve piece is limited in the preset interval between first limit plane and second limit plane, avoid the situation that high pressure exhaust valve piece can not restore deformation and can not block high pressure valve hole due to the arching amplitude of high pressure exhaust valve piece being too big. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is the cross section structure schematic diagram of air compressor integrated piston cylinder of the utility model;

[0039] Figure 2 It is the structure schematic diagram of air compressor integrated piston cylinder of the utility model;

[0040] Figure 3 It is Figure 1 The structure schematic diagram of low and high pressure exhaust valve piece;

[0041] Figure 4 It is Figure 1 The structure schematic diagram of low and high pressure exhaust valve piece;

[0042] Figure 5 It is the use schematic diagram of air compressor integrated piston cylinder of the utility model.

[0043] Mark in drawing: cylinder body (1), first radiating rib (2), fixed plate (3), low pressure cylinder cover (4), preset part (5), first cavity (6), primary compression chamber (7), primary exhaust chamber (8), first surface (9), second radiating rib (10), low pressure valve plate (11), convex rib (12), low pressure valve hole (13), low pressure exhaust valve piece (14), low pressure limit board (15), first arc surface (16), first plane (17), second cavity (18), high pressure valve plate (19), partition (20), intercommunication chamber (21), secondary compression chamber (22), secondary exhaust chamber (23), connecting channel (24), secondary intake valve piece (25), high pressure valve hole (26), high pressure exhaust valve piece (27), high pressure limit board (28), first limit plane (29), second limit plane (30). DETAILED DESCRIPTION

[0044] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0045] Example 1

[0046] like Figures 1-2 As shown, this embodiment proposes an integrated piston cylinder for an air compressor, which includes a cylinder body 1, with a plurality of first heat dissipation ribs 2 arranged parallel to each other and spaced apart; it also includes a fixing plate 3, with both ends of the fixing plate 3 connected to the cylinder body 1 along the extending direction of the fixing plate 3; for any one of the first heat dissipation ribs 2, the part facing the cylinder body 1 is the first part, and the part facing away from the cylinder body 1 is the second part, and there is a distance between the first part and the second part; the direction from the first part to the second part is the extending direction of the first heat dissipation rib 2, and the extending direction of the first heat dissipation rib 2 is perpendicular to the extending direction of the fixing plate 3; the first part of any one of the first heat dissipation ribs 2 is connected to the outer surface of the cylinder body 1, and the second part of any one of the first heat dissipation ribs 2 is connected to the fixing plate 3.

[0047] The number of fixing plates 3 can be configured according to specific circumstances, and there can be multiple of them.

[0048] As can be seen from the background art, the technical problem in the prior art is how to reduce the vibration noise of the cooling fins during the process of the cylinder driving the cooling fins to vibrate.

[0049] The first heat dissipation rib 2 in the embodiment corresponds to the heat dissipation rib in the prior art; a first part of the first heat dissipation rib 2 is connected with the outer surface of the cylinder body 1, and a second part is connected with the fixing plate 3; the direction in which the first part points to the second part is the extension direction of the first heat dissipation rib 2; and the fixing plate 3 is connected with the cylinder body 1 at both ends along the extension direction, and the extension direction of the fixing plate 3 is perpendicular to the extension direction of the first heat dissipation rib 2; thus, in the embodiment, because the fixing plate 3 is added compared with the prior art, the first heat dissipation rib 2 is changed from a cantilever beam in the prior art to a simply supported beam in the embodiment; the simply supported beam means that both ends of the beam are placed on supports; in the process of vibration of the cylinder body 1, the first part of the first heat dissipation rib 2 directly connected with the cylinder body 1 and the fixing plate 3 all vibrate synchronously, and the fixing plate 3 is directly connected with the second part of the first heat dissipation rib 2 at the same time, which will cause the cylinder body 1, the first part and the second part of the first heat dissipation rib 2 and the fixing plate 3 to vibrate synchronously, that is, the first part and the second part of the first heat dissipation rib 2 vibrate synchronously, the amplitude difference between the first part and the second part is reduced or even disappears, and finally the vibration noise of the heat dissipation rib is reduced. In summary, the embodiment solves the technical problem in the prior art: how to reduce the vibration noise of the heat dissipation rib in the process of vibration of the cylinder body driving the heat dissipation rib.

[0050] Further, the embodiment further includes the following technical solutions:

[0051] The air compressor integrated piston cylinder further includes a low-pressure cylinder cover 4, the low-pressure cylinder cover 4 is integrally formed with a preset part 5 of the cylinder body 1, and the low-pressure cylinder cover 4 and the preset part 5 of the cylinder body 1 jointly limit a first cavity 6; a low-pressure valve plate 11 is detachably arranged in the first cavity 6, and the first cavity 6 is divided into a first-stage compression chamber 7 and a first-stage exhaust chamber 8 by the low-pressure valve plate 11; a side surface of the low-pressure cylinder cover 4 facing the low-pressure valve plate 11 is a first surface 9, and the first surface 9 is part of the inner wall of the first-stage exhaust chamber 8.

[0052] In the prior art, the low-pressure cylinder cover and the cylinder body are usually connected in a detachable manner, and rely on sealing rings or sealing gaskets to achieve airtight sealing between components; in the long-term use of the air compressor, the sealing rings or sealing gaskets are prone to material aging, sealing performance degradation or even failure, increasing the cost of later maintenance and maintenance.

[0053] In the embodiment, the low-pressure cylinder cover 4 is integrally formed with the preset part 5 of the cylinder body 1, for example, by open mold casting, the low-pressure valve plate 11 is detachably connected with the cylinder body 1, and the low-pressure cylinder cover 4, the low-pressure valve plate 11 and the cylinder body 1 jointly limit the first-stage compression cavity 7 and the first-stage exhaust cavity 8; in the embodiment, the connection mode between the low-pressure cylinder cover 4 and the cylinder body 1 is changed from the detachable connection in the prior art to the integrally formed mode, and the sealing effect between the low-pressure cylinder cover 4 and the cylinder body 1 is realized by the integrally formed mode, thereby avoiding the use of sealing rings or sealing gaskets and the like to seal, and saving the later maintenance and maintenance costs.

[0054] Further, in order to accelerate the heat dissipation of the first-stage compressed gas entering the first-stage exhaust cavity, the embodiment further includes the following technical solutions:

[0055] A plurality of second heat dissipation ribs 10 are arranged in the first-stage exhaust cavity 8, and the second heat dissipation ribs 10 are arranged at intervals; the extension direction of the second heat dissipation rib 10 is the direction in which the first-stage exhaust cavity 8 points to the first-stage compression cavity 7, along the extension direction of the second heat dissipation rib 10, the two ends of the second heat dissipation rib 10 are respectively a first end and a second end; wherein the first end is connected with the first surface 9, and the second end points to the low-pressure valve plate 11 and has a spacing with the low-pressure valve plate 11.

[0056] In the embodiment, the compressed air entering the first-stage exhaust cavity 8 is in contact with the second heat dissipation rib 10, the second heat dissipation rib 10 absorbs the heat of the air in the first-stage exhaust cavity 8, thereby playing a heat dissipation role on the air in the first-stage exhaust cavity 8.

[0057] As shown in Figure 1 , Figure 2 Further, a plurality of convex ribs 12 are arranged on the side of the low-pressure cylinder cover 4 away from the first-stage exhaust cavity 8. The first-stage exhaust cavity 8 is transferred to the low-pressure cylinder cover 4 through the second heat dissipation rib 10, and the purpose of arranging the convex rib 12 is to increase the contact area of the surface of the side of the low-pressure cylinder cover 4 away from the first-stage exhaust cavity 8 with the atmosphere, thereby better dissipating heat for the low-pressure cylinder cover 4.

[0058] Further, the flow direction of the air between the first-stage compression cavity 7 and the first-stage exhaust cavity 8 is as follows:

[0059] As shown in Figure 1 , Figure 3 The low-pressure valve plate 11 is provided with a low-pressure valve hole 13, and the extension direction of the low-pressure valve hole 13 is along the direction in which the first-stage compression cavity 7 points to the first-stage exhaust cavity 8; the low-pressure valve plate 11 is further provided with a low-pressure exhaust valve piece 14, the low-pressure exhaust valve piece 14 is connected with the low-pressure valve plate 11 and can shield the low-pressure valve hole 13 by deforming, and the low-pressure exhaust valve piece 14 is used to unidirectionally guide the low-pressure valve hole 13 from the first-stage compression cavity 7 to the first-stage exhaust cavity 8.

[0060] The low-pressure exhaust valve sheet 14 is a sheet structure with elastic deformation characteristics. When the low-pressure piston assembly in the primary compression chamber 7 moves upward, the air in the primary compression chamber 7 is squeezed, the air pressure in the primary compression chamber 7 becomes high, the air pressure pushes the low-pressure exhaust valve sheet 14 to arch in the direction of the primary exhaust chamber 8, the low-pressure exhaust valve sheet 14 opens the low-pressure valve hole 13, and the gas in the primary compression chamber 7 flows to the primary exhaust chamber 8. When the low-pressure piston assembly in the primary compression chamber 7 moves downward, the air pressure in the primary compression chamber 7 decreases, and the air pressure is not enough to push the low-pressure exhaust valve sheet 14 to arch and deform, so the low-pressure exhaust valve sheet 14 restores the deformation by itself, blocks and seals the low-pressure valve hole 13, and the primary compression chamber 7 and the primary exhaust chamber 8 are cut off.

[0061] Further, the embodiment also includes the following technical solutions:

[0062] As shown in Figure 3 , the air compressor integrated piston cylinder also includes a low-pressure limit plate 15, which is detachably connected with the low-pressure valve plate 11. From the direction of the primary compression chamber 7 to the primary exhaust chamber 8, the low-pressure exhaust valve sheet 14 is located between the low-pressure limit plate 15 and the low-pressure valve plate 11. The side surface of the low-pressure limit plate 15 facing the low-pressure valve plate 11 is a first arc surface 16, which is a poor arc, and the arching direction of the first arc surface 16 is away from the low-pressure valve plate 11. The side surface of the low-pressure valve plate 11 facing the low-pressure limit plate 15 is a first flat surface 17. From the direction of the primary compression chamber 7 to the primary exhaust chamber 8, the maximum distance between the first arc surface 16 and the first flat surface 17 is configured as a preset distance. The first arc surface 16 and the first flat surface 17 together enclose a limiting space, the shape of which is fixed and cannot be changed. The deformation range of the low-pressure exhaust valve sheet 14 is limited within the limiting space.

[0063] The preset distance is set according to specific use and working conditions, which is not described here.

[0064] In this embodiment, the low-pressure limit plate 15 is provided, and the deformation range of the low-pressure exhaust valve sheet 14 is limited within the limiting space enclosed by the first arc surface 16 and the first flat surface 17, so as to limit the maximum amplitude of the arching of the low-pressure exhaust valve sheet 14, and avoid the situation that the low-pressure exhaust valve sheet 14 cannot restore the deformation and further cannot seal the low-pressure valve hole 13 due to the excessive arching amplitude of the low-pressure exhaust valve sheet 14.

[0065] Further, the embodiment also includes the following technical solutions:

[0066] The second cavity 18 is provided in the cylinder body 1, and an extension direction of the second cavity 18 is consistent with the extension direction of the first cavity 6; the second cavity 18 is provided with a high-pressure valve plate 19 and a partition plate 20, the high-pressure valve plate 19 and the partition plate 20 are integrally formed with the cavity inner wall of the second cavity 18 respectively, and the second cavity 18 is divided into a communication cavity 21, a secondary compression cavity 22 and a secondary exhaust cavity 23 by the high-pressure valve plate 19 and the partition plate 20; wherein, along the extension direction of the second cavity 18, the communication cavity 21 and the secondary exhaust cavity 23 are located on the same side of the high-pressure valve plate 19, and the secondary compression cavity 22 is located on the other side of the high-pressure valve plate 19; and the communication cavity 21 is located between the primary exhaust cavity 8 and the secondary compression cavity 22.

[0067] The embodiment also uses the technical means that the high-pressure valve plate 19 is integrally formed with the cavity inner wall of the second cavity 18, so that the air tightness between the high-pressure valve plate 19 and the cavity inner wall of the second cavity 18 is ensured, and the sealing mode that the sealing ring or the sealing gasket is arranged between the high-pressure valve plate 19 and the cavity inner wall of the second cavity 18 in the prior art is avoided, so that the later maintenance and maintenance costs are saved.

[0068] Further, the embodiment also includes the following technical solutions:

[0069] The high-pressure valve plate 19 is provided with a connecting channel 24, and the connecting channel 24 is located between the communication cavity 21 and the secondary compression cavity 22; the high-pressure valve plate 19 is also provided with a secondary air inlet valve plate 25, the secondary air inlet valve plate 25 is connected with the high-pressure valve plate 19 and can shield one end opening of the connecting channel 24 by deforming, and the secondary air inlet valve plate 25 is used for unidirectionally conducting the connecting channel 24 from the communication cavity 21 to the secondary compression cavity 22.

[0070] The working principle of the secondary air inlet valve plate 25 is similar to that of the low-pressure exhaust valve plate 14, and details are not repeated here; when the secondary air inlet valve plate 25 is deformed, the gas in the primary exhaust cavity 8 flows to the secondary compression cavity 22 through the communication cavity 21, and when the secondary air inlet valve plate 25 restores the deformation, the communication cavity 21 and the secondary compression cavity 22 are cut off.

[0071] Further, the embodiment also includes the following technical solutions:

[0072] As shown in Figure 1 , Figure 4 , the high-pressure valve plate 19 is also provided with a high-pressure valve hole 26, and the high-pressure valve hole 26 is located between the secondary compression cavity 22 and the secondary exhaust cavity 23; the high-pressure valve plate 19 is also provided with a high-pressure exhaust valve plate 27, the high-pressure exhaust valve plate 27 is connected with the high-pressure valve plate 19 and can shield the high-pressure valve hole 26 by deforming, and the high-pressure exhaust valve plate 27 is used for unidirectionally conducting the high-pressure valve hole 26 from the secondary compression cavity 22 to the secondary exhaust cavity 23.

[0073] The high-pressure exhaust valve sheet 27 has the same function and principle as the low-pressure exhaust valve sheet 14, and thus will not be described herein again. When the high-pressure exhaust valve sheet 27 is deformed, the gas in the secondary compression cavity 22 flows to the secondary exhaust cavity 23. When the high-pressure exhaust valve sheet 27 restores the deformation, the secondary compression cavity 22 and the secondary exhaust cavity 23 are cut off.

[0074] Further, the embodiment also includes the following technical solutions:

[0075] As shown in Figure 1 , Figure 4 , the air compressor integrated piston cylinder further includes a high-pressure range limiting plate 28, which is detachably connected with the high-pressure valve plate 19. In the direction from the secondary compression cavity 22 to the secondary exhaust cavity 23, the high-pressure exhaust valve sheet 27 is located between the high-pressure range limiting plate 28 and the high-pressure valve plate 19. The side surface of the high-pressure range limiting plate 28 facing the high-pressure valve plate 19 is a first limiting plane 29, and the side surface of the high-pressure valve plate 19 facing the high-pressure range limiting plate 28 is provided with a second limiting plane 30. The first limiting plane 29 and the second limiting plane 30 are parallel to each other and have a preset interval, and the deformation range of the high-pressure exhaust valve sheet 27 is limited within the preset interval.

[0076] The preset interval can be configured according to specific conditions and working conditions, and thus will not be limited herein.

[0077] In the embodiment, the high-pressure range limiting plate 28 has the similar limiting principle as the low-pressure range limiting plate 15, and thus will not be described herein again. In the embodiment, the deformation range of the high-pressure exhaust valve sheet 27 is limited within the preset interval between the first limiting plane 29 and the second limiting plane 30, so as to avoid the situation that the high-pressure exhaust valve sheet 27 cannot restore the deformation and thus cannot block the high-pressure valve hole 26 due to the excessive deformation of the high-pressure exhaust valve sheet 27.

[0078] As shown in Figure 5 , the primary compression cavity 7 is used to set a low-pressure piston assembly, and the secondary compression cavity 22 is used to set a high-pressure piston assembly.

[0079] As shown in Figures 1-5 , in use, the air compressor works. The gas, also referred to as air, first flows into the primary compression cavity 7, is compressed by the low-pressure piston assembly, and is then discharged from the low-pressure valve hole 13 to the primary exhaust cavity 8. When the pressure of the primary exhaust cavity 8 is sufficient, the gas pushes open the secondary intake valve sheet 25 to enter the secondary compression cavity 22, is compressed by the high-pressure piston assembly, and is then discharged from the high-pressure valve hole 26 to the secondary exhaust cavity 23, and is then discharged through the exhaust joint in communication with the secondary exhaust cavity 23.

[0080] The above embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An integrated piston cylinder for an air compressor, characterized in that, Includes a cylinder body (1), and a plurality of first heat dissipation fins (2) are provided on the outside of the cylinder body (1), and the plurality of first heat dissipation fins (2) are arranged parallel to each other and spaced apart; It also includes a fixing plate (3), and along the extension direction of the fixing plate (3), both ends of the fixing plate (3) are connected to the cylinder body (1); For any first heat dissipation fin (2), the part facing the cylinder (1) is the first part, and the part away from the cylinder (1) is the second part, and there is a distance between the first part and the second part; The direction from the first part to the second part is the extension direction of the first heat dissipation rib (2), and the extension direction of the first heat dissipation rib (2) is perpendicular to the extension direction of the fixing plate (3). The first part of any first heat dissipation fin (2) is connected to the outer surface of the cylinder body (1), and the second part of any first heat dissipation fin (2) is connected to the fixing plate (3).

2. The integrated piston cylinder for an air compressor according to claim 1, characterized in that, It also includes a low-pressure cylinder head (4), which is integrally formed with the preset part (5) of the cylinder body (1), and the preset part (5) of the low-pressure cylinder head (4) and the cylinder body (1) together restrict the formation of the first cavity (6). A low-pressure valve plate (11) is detachably installed in the first cavity (6). The first cavity (6) is divided into a primary compression chamber (7) and a primary exhaust chamber (8) by the low-pressure valve plate (11). The side surface of the low-pressure cylinder head (4) facing the low-pressure valve plate (11) is the first surface (9), which is part of the inner wall of the first-stage exhaust chamber (8).

3. The integrated piston cylinder for an air compressor according to claim 2, characterized in that, A number of second heat dissipation fins (10) are provided in the primary exhaust chamber (8), and the number of second heat dissipation fins (10) are arranged at intervals; The extension direction of the second heat dissipation rib (10) is the direction from the first-stage exhaust chamber (8) to the first-stage compression chamber (7). Along the extension direction of the second heat dissipation rib (10), the two ends of the second heat dissipation rib (10) are the first end and the second end, respectively. The first end is connected to the first surface (9), and the second end points to the low-pressure valve plate (11) and there is a gap between the second end and the low-pressure valve plate (11).

4. The integrated piston cylinder for an air compressor according to claim 2, characterized in that, Several raised ribs (12) are also provided on the side of the low-pressure cylinder head (4) away from the first-stage exhaust chamber (8).

5. The integrated piston cylinder for an air compressor according to claim 2, characterized in that, The low-pressure valve plate (11) is provided with a low-pressure valve hole (13), and the extension direction of the low-pressure valve hole (13) is along the direction from the first-stage compression chamber (7) to the first-stage exhaust chamber (8); A low-pressure exhaust valve plate (14) is also provided on the low-pressure valve plate (11). The low-pressure exhaust valve plate (14) is connected to the low-pressure valve plate (11) and can deformably cover the low-pressure valve hole (13). The low-pressure exhaust valve plate (14) is used to unidirectionally guide the low-pressure valve hole (13) from the first-stage compression chamber (7) to the first-stage exhaust chamber (8).

6. The integrated piston cylinder for an air compressor according to claim 5, characterized in that, It also includes a low-pressure limit plate (15), which is detachably connected to the low-pressure valve plate (11); the low-pressure exhaust valve plate (14) is located between the low-pressure limit plate (15) and the low-pressure valve plate (11) in the direction from the first-stage compression chamber (7) to the first-stage exhaust chamber (8). The side surface of the low-pressure limit plate (15) facing the low-pressure valve plate (11) is a first arc-shaped surface (16), the first arc-shaped surface (16) is a minor arc shape, and the arching direction of the first arc-shaped surface (16) is away from the low-pressure valve plate (11). The side surface of the low-pressure valve plate (11) facing the low-pressure limit plate (15) is the first plane (17); the maximum distance between the first arc surface (16) and the first plane (17) in the direction from the first-stage compression chamber (7) to the first-stage exhaust chamber (8) is configured as a preset distance; The first arc-shaped surface (16) and the first plane (17) together enclose a restricted space, the shape of which is fixed and cannot be changed; the deformation range of the low-pressure exhaust valve plate (14) is limited within this restricted space.

7. The integrated piston cylinder for an air compressor according to any one of claims 2-6, characterized in that, A second cavity (18) is also provided inside the cylinder (1), and the extension direction of the second cavity (18) is consistent with the extension direction of the first cavity (6); The second cavity (18) is provided with a high-pressure valve plate (19) and a partition plate (20). The high-pressure valve plate (19) and the partition plate (20) are integrally formed with the inner wall of the second cavity (18). The second cavity (18) is divided by the high-pressure valve plate (19) and the partition plate (20) to form a connecting cavity (21), a secondary compression cavity (22) and a secondary exhaust cavity (23). Along the extension direction of the second cavity (18), the connecting cavity (21) and the secondary exhaust cavity (23) are both located on the same side of the high-pressure valve plate (19), and the secondary compression cavity (22) is located on the other side of the high-pressure valve plate (19). The connecting cavity (21) is located between the primary exhaust cavity (8) and the secondary compression cavity (22).

8. The integrated piston cylinder for an air compressor according to claim 7, characterized in that, A connecting channel (24) is provided on the high-pressure valve plate (19), which is located between the connecting cavity (21) and the secondary compression cavity (22). A secondary intake valve plate (25) is also provided on the high-pressure valve plate (19), which is connected to the high-pressure valve plate (19) and can deformably shield one end opening of the connecting channel (24). The secondary intake valve plate (25) is used to unidirectionally guide the connecting channel (24) from the connecting cavity (21) to the secondary compression cavity (22).

9. The integrated piston cylinder for an air compressor according to claim 8, characterized in that, A high-pressure valve hole (26) is also provided on the high-pressure valve plate (19), and the high-pressure valve hole (26) is located between the secondary compression chamber (22) and the secondary exhaust chamber (23); A high-pressure exhaust valve plate (27) is also provided on the high-pressure valve plate (19). The high-pressure exhaust valve plate (27) is connected to the high-pressure valve plate (19) and can deformably cover the high-pressure valve hole (26). The high-pressure exhaust valve plate (27) is used to unidirectionally guide the high-pressure valve hole (26) from the secondary compression chamber (22) to the secondary exhaust chamber (23).

10. The integrated piston cylinder for an air compressor according to claim 9, characterized in that, It also includes a high-pressure limit plate (28), which is detachably connected to the high-pressure valve plate (19); From the secondary compression chamber (22) to the secondary exhaust chamber (23), the high-pressure exhaust valve plate (27) is located between the high-pressure limit plate (28) and the high-pressure valve plate (19). The side surface of the high-pressure limit plate (28) facing the high-pressure valve plate (19) is the first limiting plane (29), and the side surface of the high-pressure valve plate (19) facing the high-pressure limit plate (28) is provided with a second limiting plane (30). The first limiting plane (29) and the second limiting plane (30) are parallel to each other and have a preset distance. The deformation range of the high-pressure exhaust valve plate (27) is limited within the preset distance.

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