Piston type compression device

Abstract

The piston type compression device comprises a power mechanism, a reciprocating assembly, a piston and a cylinder body, the piston is arranged in the cylinder body, a first compression face of the piston and the inner wall of one side of the cylinder body form a first acting side, a second compression face of the piston and the inner wall of the other side of the cylinder body form a second acting side, and the reciprocating assembly comprises a reciprocating body and a rolling piece. The power mechanism is provided with an output shaft, the end of the output shaft is connected with a shaft head, the shaft head is provided with a guide groove along the circumferential surface of the shaft head, the rolling piece is clamped in the guide groove, and the power mechanism is used for driving the output shaft to rotate around the axis of the output shaft so as to drive the rolling piece to move along the guide groove relative to the shaft head. The reciprocating body drives the piston to alternately conduct reciprocating compression on the first acting side and the second acting side. According to the scheme, the driving efficiency of the piston is effectively improved, the piston can be compressed to do work in the advancing or retreating process, the work efficiency of the piston type compression device can be improved, and the compression effect is guaranteed.

Description

Technical Field

[0001] This application relates to the technical field of compressors, and particularly to a piston compression device. Background Art

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. General compressors include crank rocker compressors, crank connecting rod compressors, or swash plate compressors, etc. The above compressors drive the reciprocating motion of the piston through the swinging of structures such as crank rockers, crank connecting rods, and swash plates, thereby realizing the cyclic compression of the fluid in the cylinder.

[0003] However, the driving form of the piston of the above compressors generally controls the swinging of the eccentric structure to drive the reciprocating motion of the piston, and this driving method has low efficiency, resulting in low working efficiency of the compressor. Summary of the Invention

[0004] Based on this, it is necessary to provide a piston compression device for the problem of low working efficiency of the compressor.

[0005] A piston compression device includes a power mechanism, a reciprocating assembly, a piston, and a cylinder block. The piston is disposed in the cylinder block. The piston has a first compression surface and a second compression surface facing away from each other. The first compression surface and one inner wall of the cylinder block form a first working side, and the second compression surface and the other inner wall of the cylinder block form a second working side. The reciprocating assembly includes a reciprocating body and a rolling member. The rolling member is embedded in the reciprocating body. The reciprocating body is connected to the piston. The power mechanism has an output shaft, and an end of the output shaft is connected with a shaft head. A guide groove is provided on the circumferential surface of the shaft head. The rolling member is clamped in the guide groove. The power mechanism is used to drive the output shaft to rotate around its axis to drive the rolling member to move relative to the shaft head along the guide groove. The trajectory of the guide groove is configured such that when the shaft head rotates to make the rolling member move along the guide groove, the reciprocating body drives the piston to alternately perform reciprocating compression on the first working side and the second working side.

[0006] In one embodiment, the trajectory of the guide groove is a closed curve surrounding the shaft head for one week, and the closed curve trajectory of the guide groove has a wave crest and a wave trough. The wave crest and the wave trough are distributed at intervals in the circumferential direction of the shaft head along the axis direction of the shaft head.

[0007] In one embodiment, the piston compression device further includes a first housing and a second housing. The first housing and the second housing are respectively connected to two sides of the cylinder block. The first housing is provided with a first air inlet and a first air outlet, and the second housing is provided with a second air inlet and a second air outlet. The first air inlet and the first air outlet communicate with the first working side, and the second air inlet and the second air outlet communicate with the second working side.

[0008] In one embodiment, the piston compression device further includes a first valve plate and a second valve plate. The first valve plate is clamped between the first housing and the cylinder block, and the second valve plate is clamped between the second housing and the cylinder block. The first valve plate is respectively provided with a first air inlet valve and a first air outlet valve. The first air inlet is connected to the first working side through the first air inlet valve, and the first air outlet is connected to the first working side through the first air outlet valve; the second valve plate is respectively provided with a second air inlet valve and a second air outlet valve. The second air inlet is connected to the second working side through the second air inlet valve, and the second air outlet is connected to the second working side through the second air outlet valve.

[0009] In one embodiment, the power mechanism further includes a motor and a speed reduction mechanism. The speed reduction mechanism is connected to the motor, and one end of the output shaft is connected to the speed reduction mechanism.

[0010] In one embodiment, the power mechanism further includes a first rolling bearing, a second rolling bearing, a first plain bearing and a second plain bearing. The first rolling bearing and the second rolling bearing are respectively sleeved on two end portions of the output shaft, and the first plain bearing and the second plain bearing are sleeved on the middle portion of the output shaft at intervals.

[0011] In one embodiment, the reciprocating body includes a connecting body and a nest. The rolling member is embedded in the nest. The connecting body is provided with a locking structure. The piston compression device further includes a connecting shaft. The connecting shaft is connected to the piston. One end of the connecting shaft away from the piston is provided with a connecting disk, and the connecting disk is fixed to the locking structure.

[0012] In one embodiment, the connecting body is provided with a perforated structure, and the reciprocating assembly further includes a guide rod assembly. The guide rod assembly passes through the perforated structure.

[0013] In one embodiment, the piston compression device includes a first heat dissipation mechanism, and the first heat dissipation mechanism is attached to one side of the first housing.

[0014] In one embodiment, the piston compression device further includes a second heat dissipation mechanism, and the second heat dissipation mechanism is wrapped around the outer surface of the cylinder block.

[0015] For the above piston compression device, controlling the rotation of the output shaft through the power mechanism can achieve the control of the reciprocating motion of the piston. This control method is simple and reliable, effectively improving the driving efficiency of the piston. In addition, the piston has a first compression surface and a second compression surface facing away from each other. When the reciprocating body drives the piston to reciprocate, the first compression surface and the second compression surface can respectively perform compression work on the first working side and the second working side. In this way, the piston can perform compression work whether it is moving forward or backward, which helps to improve the work efficiency of the piston compression device and ensure the compression effect. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a piston compression device in an embodiment of the present application.

[0017] Figure 2 is Figure 1 a top view of the shown piston compression device.

[0018] Figure 3 is Figure 2 a sectional view of the shown piston compression device taken along the line A-A.

[0019] Figure 4 is Figure 1 a schematic structural diagram of the shown piston compression device with the second housing omitted.

[0020] Figure 5 is Figure 4 a schematic structural diagram of the shown piston compression device with the connecting body omitted.

[0021] Figure 6 is Figure 4 a schematic structural diagram of the shown piston compression device with the third housing omitted.

[0022] Figure 7 is Figure 6 an exploded view of a partial structure of the shown piston compression device.

[0023] Description of the Reference Numerals in the Drawings

[0024] 10. Piston Compression Device; 100. Power Mechanism; 110. Motor; 120. Reduction Mechanism; 130. Output Shaft; 131. Shaft Head; 131a. Guide Groove; a1. Wave Crest; a2. Wave Trough; 140. First Rolling Bearing; 150. Second Rolling Bearing; 160. First Plain Bearing; 170. Second Plain Bearing; 200. Reciprocating Assembly; 210. Reciprocating Body; 211. Connecting Body; 2111. Locking Structure; 2112. Perforation Structure; 212. Nesting; 220. Rolling Element; 230. Guide Rod Assembly; 300. Piston; 300a. First Compression Surface; 300b. Second Compression Surface; 400. Cylinder Block; 400b. Second Working Side; 500. First Housing; 510. First Air Inlet; 520. First Air Outlet; 600. Second Housing; 610. Second Air Inlet; 620. Second Air Outlet; 700. First Valve Plate; 710. First Air Inlet Valve; 720. First Air Outlet Valve; 800. Second Valve Plate; 800a. Second Air Inlet Hole; 800b. Second Air Outlet Hole; 810. Second Air Inlet Valve; 820. Second Air Outlet Valve; 830. Second Sealing Element; 900. Third Housing; 1000. Connecting Shaft; 1010. Connecting Disk; 1100. First Heat Dissipation Mechanism; 1200. Second Heat Dissipation Mechanism. Detailed Embodiment

[0025] In order to make the above objects, features, and advantages of the present application more apparent and understandable, the following will describe the detailed embodiment of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0027] In addition, if the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In this application, unless otherwise clearly specified and defined, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In this application, unless otherwise clearly specified and defined, if there is a description such as a first feature being "on" or "under" a second feature, its meaning can be 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, the first feature being "above", "over", and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0031] Refer to Figure 1 、 Figure 2 and Figure 3 , Figure 1 shows a schematic structural view of a piston compression device 10 in an embodiment of this application. Figure 2 is Figure 1 a top view of the piston compression device 10 shown. Figure 3 is Figure 2Cross-sectional view of the piston compression device 10 shown at A-A.

[0032] As shown in combination with Figure 3 the present application provides a piston compression device 10, which includes a power mechanism 100, a reciprocating assembly 200, a piston 300 and a cylinder block 400. The piston 300 is disposed within the cylinder block 400. The piston 300 has a first compression surface 300a and a second compression surface 300b that face away from each other. The first compression surface 300a and one inner wall of the cylinder block 400 form a first working side (not shown), and the second compression surface 300b and the other inner wall of the cylinder block 400 form a second working side 400b.

[0033] As shown in combination with Figure 3 and Figure 5 the reciprocating assembly 200 includes a reciprocating body 210 and a rolling member 220. The rolling member 220 is embedded in the reciprocating body 210. The reciprocating body 210 is connected to the piston 300 (it should be noted that in order to clearly show the structure of the rolling member 220 embedded in the reciprocating body 210, the connection between the reciprocating body 210 and the piston 300 is omitted in Figure 5 and specifically, the connection between the reciprocating body 210 and the piston 300 can be obtained from Figure 3 ). The power mechanism 100 has an output shaft 130, and a shaft head 131 is connected to the end of the output shaft 130. A guide groove 131a is provided on the circumferential surface of the shaft head 131. The rolling member 220 is clamped in the guide groove 131a. The power mechanism 100 is used to drive the output shaft 130 to rotate about its axis to drive the rolling member 220 to move relative to the shaft head 131 along the guide groove 131a. The trajectory of the guide groove 131a is configured such that when the shaft head 131 rotates to cause the rolling member 220 to move along the guide groove 131a, the reciprocating body 210 drives the piston 300 to alternately perform reciprocating compression on the first working side and the second working side 400b.

[0034] It should be noted that the above-mentioned first working side and second working side 400b refer to the compression chambers located on both sides of the piston 300. As Figure 3 shown, when the piston 300 is fully abutted against one inner wall of the cylinder block 400, the volume of the first working side is zero at this time. Therefore, only the second working side 400b is shown in Figure 3 . It can be understood that when the piston 300 is fully abutted against the other inner wall of the cylinder block 400, the volume of the second working side 400b is zero at this time, and the volume of the first working side reaches the maximum.

[0035] The above piston compression device 10 can control the reciprocating motion of the piston 300 by controlling the rotation of the output shaft 130 through the power mechanism 100. The control method is simple and reliable, effectively improving the driving efficiency of the piston 300. In addition, the piston 300 has a first compression surface 300a and a second compression surface 300b facing away from each other. When the reciprocating body 210 drives the piston 300 to reciprocate, the first compression surface 300a and the second compression surface 300b can respectively perform compression work on the first work side and the second work side 400b. In this way, the piston 300 can perform compression work whether it is moving forward or backward, which helps to improve the work efficiency of the piston compression device 10 and ensure the compression effect.

[0036] In addition, it should be noted that traditional crankshaft swing rod compressors, crank connecting rod compressors or swash plate compressors use the reciprocating swing of their eccentric structures to control the reciprocating motion of the piston 300. This control method is inefficient and causes greater vibration and friction damage to the structure. In this application, the end of the output shaft 130 is provided with a shaft head 131, and the reciprocating motion of the piston 300 is controlled by driving the guide groove 131a of the shaft head 131. This method abandons the eccentric control method, simplifies the structure, and improves the convenience of control. In addition, compared with traditional crankshaft swing rod compressors, crank connecting rod compressors or swash plate compressors, this application makes the axis direction of the output shaft 130, the motion direction of the reciprocating body 210, and the compression direction of the piston 300 consistent, which helps to reduce vibration and friction damage between structures and improve the working reliability of the structure.

[0037] The rolling element 220 can be a spherical ball. Since the rolling element 220 moves along the guide groove 131a of the shaft head 131 when the shaft head 131 rotates, using a spherical ball as the rolling element 220 can reduce the friction force between the rolling element 220 and the wall surface of the guide groove 131a, thereby improving the smoothness of the reciprocating motion of the shaft head 131 driving the reciprocating body 210.

[0038] Combined with Figure 5 As shown, in some embodiments, the trajectory of the guide groove 131a is a closed curve that surrounds the shaft head 131 once, and the closed curve trajectory of the guide groove 131a has a wave peak a1 and a wave valley a2. The wave peak a1 and the wave valley a2 are circumferentially distributed on the circumferential surface of the shaft head 131 at intervals in the axial direction of the shaft head 131. In this way, the reciprocating body 210 can reciprocate in the axial direction of the shaft head 131 under the guidance of the wave peak a1 and the wave valley a2.

[0039] Specifically, the numbers of the wave crest a1 and the wave trough a2 can be designed according to actual needs. For example, when the rotational speed of the shaft head 131 is constant, the numbers of the wave crest a1 and the wave trough a2 can be increased, so as to increase the frequency of the reciprocating motion of the reciprocating body 210, and further increase the compression frequency of the piston 300. On the contrary, when the rotational speed of the shaft head 131 is constant, the numbers of the wave crest a1 and the wave trough a2 can be decreased, so as to decrease the frequency of the reciprocating motion of the reciprocating body 210, and further decrease the compression frequency of the piston 300.

[0040] Combined with Figure 5 As shown, in some embodiments, the numbers of both the wave crest a1 and the wave trough a2 are set to 2, and the wave crest a1 and the wave trough a2 are evenly distributed at 90 degrees around the axis of the shaft head 131. In this way, within one rotation of the shaft head 131, the reciprocating body 210 can reciprocate 2 times, which not only ensures the rationality of the structural arrangement, but also improves the motion efficiency of the reciprocating body 210.

[0041] Continuing to combine Figure 1 and Figure 3 As shown, in some embodiments, the piston-type compression device 10 further includes a first housing 500 and a second housing 600, and the first housing 500 and the second housing 600 are respectively connected to both sides of the cylinder block 400. The second housing 600 is used to install and protect the reciprocating assembly 200. In this embodiment, the first housing 500 is provided with a first air inlet 510 and a first air outlet 520, and the second housing 600 is provided with a second air inlet 610 and a second air outlet 620. The first air inlet 510 and the first air outlet 520 are communicated with the first working side, and the second air inlet 610 and the second air outlet 620 are communicated with the second working side 400b, so as to realize the independent air inlet and outlet of the first working side and the independent air inlet and outlet of the second working side 400b.

[0042] Specifically, on the one hand, the second housing 600 serves as the air inlet and outlet of the second working side 400b, and on the other hand, it is used to install and protect the reciprocating assembly 200. In this way, it helps to improve the structural compactness and structural integrity between the cylinder block 400 and the reciprocating assembly 200, and further helps to reduce the volume of the piston-type compression device 10 and improve the portability and applicability of the piston-type compression device 10.

[0043] For the convenience of understanding below, the air inlet and outlet process of the piston-type compression device 10 is described in combination with Figure 3 as shown.

[0044] In the piston compression device 10 of the present application, the reciprocating body 210 can drive the piston 300 to alternately perform reciprocating compression on the first working side and the second working side 400b. Therefore, during the reciprocating movement of the piston 300 in the cylinder block 400, it includes the process of the first compression surface 300a compressing the left inner wall of the cylinder block 400 and the process of the second compression surface 300b compressing the right inner wall of the cylinder block 400.

[0045] Specifically, from Figure 3 the perspective shown, when the piston 300 starts to compress leftward from the rightmost side of the cylinder block 400 (the second compression surface 300b abuts against the right inner wall of the cylinder block 400), both the first air inlet 510 and the first air outlet 520 are in a closed state. At this time, the gas in the first working side is compressed as the piston 300 moves. As the piston 300 continues to compress leftward, the gas pressure in the first working side will gradually increase, and finally the gas is discharged through the first air outlet 520. Additionally, during this process, the second air outlet 620 remains closed, and the second air inlet 610 remains open, and the gas to be compressed flows into the second working side 400b through the second air inlet 610.

[0046] When the first compression surface 300a of the piston 300 abuts against the leftmost inner wall of the cylinder block 400, the compression work process of the first working side ends at this time. Then the piston 300 starts to move to the right and performs compression work on the second working side 400b.

[0047] When the piston 300 starts to compress rightward from the leftmost side of the cylinder block 400 (the first compression surface 300a abuts against the left inner wall of the cylinder block 400), both the second air inlet 610 and the second air outlet 620 are in a closed state. At this time, the gas in the second working side 400b is compressed as the piston 300 moves. As the piston 300 continues to compress rightward, the gas pressure in the second working side 400b will gradually increase, and finally the gas is discharged through the second air outlet 620. Additionally, during this process, the first air outlet 520 remains closed, and the first air inlet 510 remains open, and the gas to be compressed flows into the first working side through the first air inlet 510.

[0048] The above is the general process of the intake and exhaust of the piston compression device 10. This process can achieve the two-way compression of the piston 300, which helps to improve the compression effect of the piston compression device 10.

[0049] Combined with Figure 3As shown, in some embodiments, the piston compression device 10 further includes a first valve plate 700 and a second valve plate 800. The first valve plate 700 is clamped between the first housing 500 and the cylinder block 400, and the second valve plate 800 is clamped between the second housing 600 and the cylinder block 400. The first valve plate 700 is respectively provided with a first intake valve 710 and a first exhaust valve 720. The first intake port 510 is connected to the first working side through the first intake valve 710, and the first exhaust port 520 is connected to the first working side through the first exhaust valve 720. The second valve plate 800 is respectively provided with a second intake valve 810 and a second exhaust valve 820. The second intake port 610 is connected to the second working side 400b through the second intake valve 810, and the second exhaust port 620 is connected to the second working side 400b through the second exhaust valve 820.

[0050] Specifically, the first valve plate 700 faces the first compression surface 300a, and the second valve plate 800 faces the second compression surface 300b. The first valve plate 700 and the second valve plate 800 serve as the installation carriers of the intake and exhaust valve bodies and also serve as the seals between the housing and the cylinder block 400 respectively. Therefore, in some embodiments, first seals are provided on both sides of the first valve plate 700, and a second seal 830 is provided on both sides of the second valve plate 800, which helps to improve the sealing performance of the piston compression device 10 and ensure the reliability of the compression of the piston 300.

[0051] Combined with Figure 4 As shown, in some embodiments, the second valve plate 800 is correspondingly provided with a second intake hole 800a and a second exhaust hole 800b, and the second intake valve 810 and the second exhaust valve 820 can respectively communicate with the second intake hole 800a and the second exhaust hole 800b. Additionally, combined with Figure 4 As shown, a second seal 830 is also provided on the second valve plate 800, which helps to improve the intake and exhaust sealing effect of the second valve plate 800 and further ensure the compression effect of the piston compression device 10.

[0052] Similarly, the first valve plate 700 is correspondingly provided with a first intake hole and a first exhaust hole, and the first intake valve 710 and the first exhaust valve 720 can respectively communicate with the first intake hole and the first exhaust hole. Additionally, a first seal is also provided on the first valve plate 700, which helps to improve the intake and exhaust sealing effect of the first valve plate 700 and further ensure the compression effect of the gas.

[0053] Combined with Figure 4 As shown, in some embodiments, the reciprocating body 210 includes a connecting body 211 and a nesting 212, and the rolling member 220 is embedded in the nesting 212. Additionally, combined with Figures 3 - 5As shown, the connecting body 211 is provided with a locking structure 2111 , and the piston compression device 10 also includes a connecting shaft 1000 , which is connected to the piston 300 , and a connecting disk 1010 is provided at one end of the connecting shaft 1000 away from the piston 300 , and the connecting disk 1010 is fixed to the locking structure 2111 .

[0054] Specifically, the connecting body 211 and the nesting 212 can be integrally formed or bolted. The axis of the connecting shaft 1000 is consistent with the movement direction of the connecting body 211, which helps to ensure the smooth movement of the piston 300. In addition, the design of providing a connecting plate 1010 at one end of the connecting shaft 1000 helps to improve the connection stability between the connecting shaft 1000 and the connecting body 211, and improve the working reliability of the piston type compression device 10.

[0055] Combination Figure 4 As shown, in some embodiments, the connector 211 is provided with a perforated structure 2112 , and the reciprocating assembly 200 further includes a guide rod assembly 230 , and the guide rod assembly 230 is provided through the perforated structure 2112 .

[0056] Specifically, the guide rod assembly 230 may include a first guide rod and a second guide rod that are inserted into both sides of the connecting body 211, which helps to improve the stability of the reciprocating motion of the reciprocating body 210. Understandably, in other embodiments, the guide rod assembly 230 may also include a third guide rod, a fourth guide rod, etc. The number of guide rods can be designed according to actual structural requirements. Specifically, a plurality of guide rods can be evenly distributed around the axis of the output shaft 130.

[0057] Continue reading Figure 4 In some embodiments, the piston compression device 10 further includes a third housing 900. The first guide rod is fixedly connected to the second housing 600 and the third housing 900, respectively, and both ends of the second guide rod are fixedly connected to the second housing 600 and the third housing 900, respectively.

[0058] Combination Figure 6 As shown, in some embodiments, the power mechanism 100 further includes a first rolling bearing 140 and a second rolling bearing 150, which are respectively sleeved at both ends of the output shaft 130, which helps to reduce the rotational friction resistance of the output shaft 130. In addition, the power mechanism 100 further includes a first plane bearing 160 and a second plane bearing 170, which are sleeved at intervals in the middle of the output shaft 130, which helps to improve the bearing capacity of the output shaft 130.

[0059] Combination Figure 7As shown, in some embodiments, the power mechanism 100 further includes a motor 110 and a speed reduction mechanism 120. The speed reduction mechanism 120 is connected to the motor 110. One end of the output shaft 130 is connected to the speed reduction mechanism 120, and the other end is connected to the reciprocating assembly 200. The speed reduction mechanism 120 is used to reduce the speed and increase the torque of the motor 110, and transfer the torque to the reciprocating assembly 200 through the output shaft 130, thus realizing the reasonable transfer of torque.

[0060] Specifically, in this embodiment, the present application can directly drive the rotation of the output shaft 130 through the motor 110 to realize the reciprocating motion of the piston 300. Compared with the control of the traditional eccentric structure, the control method of the present application is more convenient. Connecting the output end of the motor 110 to the output shaft 130 can complete the installation, thus improving the assembly simplicity of the piston compression device 10 and the connection reliability of the structure.

[0061] Continue to combine Figure 7 As shown, the speed reduction mechanism 120 is a planetary gear structure. The end of the output shaft 130 has a disc-shaped structure, and corresponding connection holes are provided on the disc-shaped structure. The planetary gear structure is inserted into the corresponding connection holes to realize the fixed connection between the connecting shaft 1000 and the planetary gear structure.

[0062] Refer to again Figure 1 As shown, in some embodiments, the piston compression device 10 includes a first heat dissipation mechanism 1100. The first heat dissipation mechanism 1100 is attached to one side of the first housing 500, which helps to realize the independent control of the first heat dissipation mechanism 1100 and ensure the heat dissipation effect of the piston compression device 10.

[0063] Specifically, the heat dissipation mechanism of the traditional compressor is generally connected to the motor 110 of the power mechanism 100, which will cause the heat dissipation mechanism to stop operating when the motor 110 stops rotating, resulting in poor heat dissipation effect of the compressor. In this embodiment, the first heat dissipation mechanism 1100 is attached to one side of the first housing 500, so as to realize the independent arrangement of the first heat dissipation mechanism 1100 and the motor 110, providing conditions for the independent control of the first heat dissipation mechanism 1100. More specifically, the first heat dissipation mechanism 1100 can be connected to a power source (not shown) to realize the independent heat dissipation control of the first heat dissipation mechanism 1100.

[0064] Combine Figure 1 As shown, in some embodiments, the piston compression device 10 further includes a second heat dissipation mechanism 1200. The second heat dissipation mechanism 1200 is wrapped around the outer surface of the cylinder block 400, which can improve the heat dissipation effect of the cylinder block 400. Specifically, the second heat dissipation mechanism 1200 can be composed of multiple heat dissipation fins, which can timely discharge the heat of the cylinder block 400.

[0065] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0066] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A piston type compression device, characterized in that: The cam is an axially parallelogram of the first and second compression surfaces of the plurality of pistons, the plurality of pistons being arranged in a circle and the plurality of pistons being arranged in a circle.

2. The piston type compression device according to claim 1, characterized in that: The track of the guide groove is a closed curve that surrounds the shaft head, and the closed curve track of the guide groove has crests and troughs, and the crests and troughs are distributed on the circumferential surface of the shaft head at intervals around the axial direction of the shaft head.

3. The piston type compression device according to claim 1, characterized in that: The piston compression device also includes a first shell and a second shell, the first shell and the second shell are respectively connected to the two sides of the cylinder body, the first shell is provided with a first air inlet and a first air outlet, the second shell is provided with a second air inlet and a second air outlet, the first air inlet and the first air outlet are connected to the first working side, and the second air inlet and the second air outlet are connected to the second working side.

4. The piston type compression device according to claim 3, characterized in that: The piston compression device also includes a first valve plate and a second valve plate, the first valve plate is clamped between the first shell and the cylinder body, the second valve plate is clamped between the second shell and the cylinder body, the first valve plate is respectively provided with a first intake valve and a first outlet valve, the first intake port is connected to the first working side through the first intake valve, and the first outlet port is connected to the first working side through the first outlet valve; the second valve plate is respectively provided with a second intake valve and a second outlet valve, the second intake port is connected to the second working side through the second intake valve, and the second outlet port is connected to the second working side through the second outlet valve.

5. The piston type compression device according to claim 1, characterized in that: The power mechanism further includes a motor and a reduction mechanism, the reduction mechanism is connected to the motor, and one end of the output shaft is connected to the reduction mechanism.

6. The piston type compression device according to claim 1, characterized in that: The power mechanism also includes a first rolling bearing, a second rolling bearing, a first plane bearing and a second plane bearing. The first rolling bearing and the second rolling bearing are respectively sleeved on the two ends of the output shaft, and the first plane bearing and the second plane bearing are sleeved at intervals in the middle of the output shaft.

7. The piston type compression device according to claim 1, characterized in that: The reciprocating body includes a connecting body and a nesting, the rolling element is embedded in the nesting, the connecting body is provided with a locking structure, and the piston type compression device also includes a connecting shaft, the connecting shaft is connected to the piston, and a connecting disk is provided at one end of the connecting shaft away from the piston, and the connecting disk is fixed to the locking structure.

8. The piston type compression device according to claim 7, characterized in that: The connector is provided with a perforated structure, and the reciprocating assembly further comprises a guide rod assembly, and the guide rod assembly is penetrated through the perforated structure.

9. The piston type compression device according to claim 3, characterized in that: The piston compression device includes a first heat dissipation mechanism, and the first heat dissipation mechanism is in contact with one side of the first shell.

10. The piston type compression device according to claim 1, characterized in that: The piston compression device further includes a second heat dissipation mechanism, which is wrapped around the outer surface of the cylinder body.

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