Portable compression device

Abstract

The utility model relates to a portable compression device. The portable compression device comprises a power assembly, a compression assembly, an air storage mechanism and a power source. The power assembly comprises a power mechanism, an output shaft, a driving wheel and a driven wheel. The output shaft penetrates through the driven wheel, the driving wheel is in transmission connection with the driven wheel, and the power mechanism is used for driving the driving wheel to rotate. The power source is provided with a wiring structure used for being externally connected with alternating current, and the power source and the power mechanism are arranged on the two sides of the driving wheel respectively. The compression assembly comprises a reciprocating body, a rolling piece, a piston and a cylinder body. The piston is arranged in the cylinder body, the rolling piece is embedded in the reciprocating body, and the reciprocating body is connected with the piston. The two ends of the output shaft are each connected with a shaft head provided with a guide groove, and the rolling pieces on the corresponding sides are clamped in the guide grooves. When the shaft head rotates to enable the rolling piece to move along the guide groove, the piston is driven to be compressed in the cylinder body in a reciprocating mode. According to the scheme, an alternating-current and direct-current dual-purpose energy supply mode is achieved, the power source and the power mechanism are distributed on the two sides of the driving wheel correspondingly, the applicability of the device is improved, and the structural layout is optimized.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to a portable compression device. Background Art

[0002] A compressor is a driven fluid machine that boosts low-pressure gas to high-pressure gas. Common compressors include crankshaft swing rod compressors, crank connecting rod compressors, or swash plate compressors. The above compressors drive the reciprocating motion of the piston through the swing of the crankshaft swing rod, crank connecting rod, swash plate and other structures, thereby achieving cyclic compression of the fluid in the cylinder.

[0003] However, the driving mode of the above compressor causes large vibrations, and the compressor is large and heavy, making it inconvenient to carry. Summary of the invention

[0004] Based on this, it is necessary to provide a portable compression device to address the problems in the related art that the driving form of the traditional compressor has large vibrations, and the compressor is large and bulky and not easy to carry.

[0005] A portable compression device comprising:

[0006] A power assembly, the power assembly comprising a power mechanism, an output shaft, a driving wheel and a driven wheel, the output shaft is passed through the driven wheel, the driving wheel and the driven wheel are connected to each other in a transmission manner, the power mechanism is used to drive the driving wheel to rotate so as to drive the driven wheel to rotate, so that the driven wheel drives the output shaft to rotate around its axis;

[0007] A compression assembly, the compression assembly comprising a reciprocating body, a rolling element, a piston and a cylinder body, the piston is arranged in the cylinder body, the rolling element is embedded in the reciprocating body, and the reciprocating body is connected to the piston;

[0008] The two ends of the output shaft are each connected to a shaft head, and are linked to the reciprocating body of the compression assembly through the shaft head; wherein the shaft head is provided with a guide groove along its circumferential surface, and the rolling element of the compression assembly located on the corresponding side is clamped in the guide groove, so that the shaft head is linked to the corresponding reciprocating body, and the track of the guide groove is configured as follows: when the shaft head rotates to make the rolling element move along the guide groove, the reciprocating body drives the piston to reciprocate and compress in the cylinder body;

[0009] An air storage mechanism, the air storage mechanism being in communication with the cylinder body; and

[0010] A power source is provided with a wiring structure for externally connecting to alternating current. The power source and the power mechanism are respectively arranged on both sides of the driving wheel, and the power source is electrically connected to the power mechanism.

[0011] In one embodiment, the gas storage mechanism is in the shape of a hollow cylinder, and the axis of the gas storage mechanism deviates from and is arranged parallel to the axis of the output shaft.

[0012] In one embodiment, the piston has a first compression surface and a second compression surface that are opposite to each other, the first compression surface and an inner wall of one side of the cylinder body constitute a first working side, and the second compression surface and an inner wall of the other side of the cylinder body constitute a second working side, when the shaft head rotates to cause the rolling element to move along the guide groove, the reciprocating body drives the piston to alternately reciprocate and compress the first working side and the second working side.

[0013] In one embodiment, the portable 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 first air inlet and the first air outlet are connected to the first working side, and the second shell is provided with a second air inlet and a second air outlet, the second air inlet and the second air outlet are connected to the second working side.

[0014] In one embodiment, the portable compression device further comprises a first connection cover, the first connection cover is connected to one side of the first shell and the second shell, and the first connection cover is used to connect the first air outlet and the second air outlet;

[0015] And / or, the portable compression device further comprises a second connection cover, the first connection cover is connected to the other side of the first shell and the second shell, and the second connection cover is used to connect the first air inlet and the second air inlet.

[0016] In one embodiment, the compression assembly is further provided with a main air inlet and a main air outlet. The main air inlet is provided on a side of the first shell away from the second connecting cover, and the main air outlet is provided on the first connecting cover.

[0017] In one embodiment, the trajectory of the guide groove is a closed curve that surrounds the shaft head, and the closed curve trajectory 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.

[0018] In one of the embodiments, the trajectories of the guide grooves of the shaft heads at both ends of the output shaft are arranged in mirror symmetry with respect to a median vertical plane perpendicular to the output shaft.

[0019] In one embodiment, 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 portable 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.

[0020] In one embodiment, the portable compression device includes a first heat dissipation mechanism, which is wrapped around the outer surface of the cylinder;

[0021] And / or, the portable compression device also includes a main body cover and a second heat dissipation mechanism, the main body cover wraps the compression assembly, the number of the second heat dissipation mechanisms is two, and the two second heat dissipation mechanisms are respectively attached to the two sides of the main body cover along the axial direction of the output shaft.

[0022] On the one hand, the portable compression device described above realizes a dual-use energy supply form of AC / DC by providing the power source with a wiring structure for external AC power, which is directly supplied by the power source, thus helping to improve the multi-scenario applicability and portability of the portable compression device. On the other hand, the driving method of the portable compression device described above, which drives the driving wheel through the power mechanism to drive the driven wheel to rotate, helps to simplify the connection structure between the power mechanism and the compression assembly, and forms a structural arrangement in which the power source and the power mechanism are respectively arranged on both sides of the driving wheel, thus helping to improve the structural compactness of the portable compression device, reduce the volume of the portable compression device, and optimize the structural arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of a portable compression device in one embodiment of the present application.

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the portable compression device after omitting the shell.

[0025] Figure 3 It is a structural diagram of a portable compression device in another embodiment.

[0026] Figure 4 for Figure 3 Schematic diagram of the structure of the portable compression device after omitting the shell.

[0027] Figure 5 for Figure 2 A schematic diagram of part of the structure of the portable compression device shown.

[0028] Figure 6 for Figure 5In the portable compression device shown, the structural schematic diagram behind the main unit cover is omitted.

[0029] Figure 7 for Figure 6 Top view of the structure shown.

[0030] Figure 8 for Figure 7 A cross-sectional view of the structure shown at AA.

[0031] Fig. 9 for Figure 6 In the portable compression device shown, part of the structural schematic diagram behind the second shell is omitted.

[0032] Fig.10 for Fig. 9 In the portable compression device shown, part of the structural schematic diagram after the connector is omitted.

[0033] Description of Figure Numbers

[0034] 10. Portable compression device; 11. Housing; 12. Screen; 100. Power assembly; 110. Power mechanism; 111. Speed ​​reduction mechanism; 120. Output shaft; 121. Shaft head; 121a. Guide groove; a1. Wave crest; a2. Wave trough; 130. Driving wheel; 140. Driven wheel; 150. Transmission belt; 160. First bearing assembly; 161. First rolling bearing; 162. First plane bearing; 170. Second bearing assembly; 171. Second rolling bearing; 172. Second plane bearing; 200. Compression assembly; 200a. First compression assembly; 200b. Second compression assembly; 210. Reciprocating body; 211. Connecting body; 2111. Locking structure; 2112. Perforated structure; 212. Nesting; 220. Rolling element; 230. Piston; 230a. First compression surface; 230b. Second compression surface; 240. Cylinder body; 240a, first working side; 250, guide rod assembly; 260, first air inlet valve; 270, first air outlet valve; 280, second air inlet valve; 290, second air outlet valve; 300, power source; 310, wiring structure; 400, gas storage mechanism; 500, control mechanism; 600, first housing; 610, first air inlet; 620, first air outlet; 630, total air inlet; 700, second housing; 7 10. Second air inlet; 720. Second air outlet; 800. First connecting cover; 810. Main air outlet; 900. Second connecting cover; 1000. First valve plate; 1100. Second valve plate; 1100a. Second air inlet; 1100b. Second air outlet; 1110. Second sealing member; 1200. First heat dissipation mechanism; 1300. Second heat dissipation mechanism; 1400. Connecting shaft; 1500. Main unit cover. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth 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 violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that if 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. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; 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 this application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the 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. The first feature being "below", "below" and "below" the 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.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0041] See also Figure 1 and Figure 2 ,in Figure 1 This is a schematic diagram of the structure of a portable compression device 10 in one embodiment of the present application. Figure 2 for Figure 1 A schematic diagram of the structure of the portable compression device 10 after omitting the outer shell.

[0042] In one embodiment, the present application provides a portable compression device 10. The portable compression device 10 has a housing 11 and a power source 300. The power source 300 is provided with a wiring structure 310 for externally connecting to an alternating current. The power source 300 is located in the housing 11 of the portable compression device 10, and the wiring structure 310 passes through the housing 11 and is connected to the power source 300 located in the housing 11. When the wiring structure 310 is connected to an alternating current, the portable compression device 10 starts and performs gas compression.

[0043] Continue reading Figure 2 The portable compression device 10 of the present application further includes a power assembly 100, a compression assembly 200 and a power source 300. The power assembly 100 is used to drive the compression assembly 200 to perform compression work to achieve gas compression, and the power source 300 is electrically connected to the power assembly 100, and the power source 300 is used to supply energy to the power assembly 100. Specifically, in some embodiments, the power source 300 is a battery module, and preferably, the power source 300 is a lithium battery module.

[0044] In this embodiment, the portable compression device 10 of the present application can provide energy in the form of external alternating current using the wiring structure 310, or can provide energy by consuming energy from the power source 300, thereby realizing wireless multi-scenario energy supply using the power source 300, thereby ensuring the energy supply diversity and portability of the portable compression device 10.

[0045] The energy supply mode of the portable compression device 10 of the present application is described below.

[0046] When the compression assembly 200 needs to work, if the wiring structure 310 is connected to AC power, the portable compression device 10 is preferably powered by the AC power connected to the wiring structure 310. If the wiring structure 310 is not connected to AC power, the portable compression device 10 is powered by the power source 300 consuming energy.

[0047] When the compression component 200 does not need to work, if the wiring structure 310 is connected to an external AC power, the external AC power of the wiring structure 310 is converted into charging the power source 300, which helps to ensure that the portable compression device 10 can always have energy to work, thereby improving the working reliability of the portable compression device 10.

[0048] When the compression assembly 200 needs to work when the wiring structure 310 is charged with the power source 300 by the external AC power, the charging is stopped immediately, and the portable compression device 10 is powered by the external AC power of the wiring structure 310 first.

[0049] The components of the power assembly 100 and the compression assembly 200 are described below.

[0050] See also Figure 8 The above-mentioned compression assembly 200 of the present application includes a reciprocating body 210, a rolling element 220, a piston 230 and a cylinder body 240. The piston 230 is disposed in the cylinder body 240, the rolling element 220 is embedded in the reciprocating body 210, and the reciprocating body 210 is connected to the piston 230.

[0051] See also Fig.10 The power assembly 100 of the present application includes a power mechanism 110, an output shaft 120, a driving wheel 130 and a driven wheel 140. The output shaft 120 is disposed through the driven wheel 140, and the driving wheel 130 and the driven wheel 140 are connected to each other in a transmission manner. The power mechanism 110 is used to drive the driving wheel 130 to rotate to drive the driven wheel 140 to rotate, so that the driven wheel 140 drives the output shaft 120 to rotate around its axis. In addition, Figure 1 As shown, the power source 300 and the power mechanism 110 are respectively arranged on both sides of the driving wheel 130 , and the power source 300 is electrically connected to the power mechanism 110 .

[0052] Continue reading Figure 8 and Fig.10 The two ends of the output shaft 120 are each connected to a shaft head 121, and each is linked to a reciprocating body 210 of the compression assembly 200 through the shaft head 121; wherein the shaft head 121 is provided with a guide groove 121a along its circumferential surface, and the rolling element 220 of the compression assembly 200 located on the corresponding side is clamped in the guide groove 121a, so that the shaft head 121 is linked to the corresponding reciprocating body 210, and the track of the guide groove 121a is configured as follows: when the shaft head 121 rotates to make the rolling element 220 move along the guide groove 121a, the reciprocating body 210 drives the piston 230 to reciprocate and compress in the cylinder body 240. Figure 4 As shown, the present application further includes a gas storage mechanism 400 , which is connected to the cylinder body 240 and is used to store high-pressure gas compressed by the compression assembly 200 .

[0053] Specifically, combined Figure 8 As shown, each end of the output shaft 120 is connected to a compression assembly 200, and the two compression assemblies 200 at the two ends of the output shaft 120 are respectively a first compression assembly 200a and a second compression assembly 200b. The power mechanism 110 can be a motor, a hydraulic drive device or a pneumatic drive device, as long as it can drive the output shaft 120 to rotate around its axis.

[0054] Preferably, combined Fig.10 As shown, in some embodiments, the power assembly 100 further includes a reduction mechanism 111, which is disposed between the power mechanism 110 and the driving wheel 130. The reduction mechanism 111 is used to reduce the speed and increase the torque of the power mechanism 110, and transmit the torque to the shaft head 121 via the output shaft 120, so as to achieve a reasonable transmission of the torque. In this embodiment, the power mechanism 110 is preferably a motor. Specifically, the reduction mechanism 111 can be a planetary gear structure. In addition, the rolling element 220 can be a spherical ball. Since the rolling element 220 moves along the guide groove 121a of the shaft head 121 when the shaft head 121 rotates, the spherical ball of the rolling element 220 can reduce the friction between the rolling element 220 and the wall of the guide groove 121a, thereby improving the smoothness of the reciprocating motion of the reciprocating body 210 driven by the shaft head 121.

[0055] The portable compression device 10 of the present application, on the one hand, realizes a dual-use energy supply form of AC / DC, which is directly supplied by the external AC power and the power source 300, by providing the power source 300 with a wiring structure 310 for external AC power. This helps to improve the multi-scenario applicability and portability of the portable compression device 10. On the other hand, the driving method of the portable compression device 10, in which the power mechanism 110 drives the driving wheel 130 to drive the driven wheel 140 to rotate, helps to simplify the connection structure between the power mechanism 110 and the compression assembly 200, and forms a structural arrangement in which the power source 300 and the power mechanism 110 are respectively arranged on both sides of the driving wheel 130. This helps to improve the structural compactness of the portable compression device 10, reduce the volume of the portable compression device 10, and optimize the structural arrangement.

[0056] In addition, direct connection between the power mechanism 110 and the compression assembly 200 may easily cause uneven vibration of the power structure. The above-mentioned driving method of driving the driving wheel 130 through the power mechanism 110 to drive the driven wheel 140 to rotate helps to avoid the power mechanism 110 being directly connected to the compression assembly 200, thereby helping to reduce the vibration transmission of the power mechanism 110 to the compression assembly 200 and improve working stability.

[0057] Furthermore, the portable compression device 10, through the mutually engaged arrangement of the shaft head 121 and the rolling element 220, realizes the conversion of the control of the power mechanism 110 on the rotation of the output shaft 120 around the axis into the control of the reciprocating motion of the piston 230 along the axis direction. This control method is simple and reliable, and effectively improves the driving efficiency of the piston 230. Furthermore, by rotating the output shaft 120 around its axis to directly drive the piston 230 to reciprocate, the characteristic of the output shaft 120 having output at both ends can be utilized, and the compression assembly 200 is simultaneously arranged at both ends of the output shaft 120, thereby realizing the design of simultaneous compression of the dual-cylinder dual-piston 230, which helps to improve the working efficiency of the portable compression device 10.

[0058] It should be noted that the conventional crankshaft rocker compressor, crank connecting rod compressor or swash plate compressor utilizes the reciprocating swing of its eccentric structure to realize the reciprocating motion control of the piston 230. This control method is inefficient and causes great damage to the vibration and friction of the structure. First of all, the driving method of the present application that drives the driving wheel 130 through the power mechanism 110 to drive the driven wheel 140 to rotate helps to optimize the structural layout and driving form and reduce structural vibration. In addition, the present application provides a shaft head 121 at the end of the output shaft 120, and utilizes the guide groove 121a of the shaft head 121 to drive the reciprocating motion of the piston 230. This abandons the eccentric control method, simplifies the structure, and improves the convenience of control.

[0059] Therefore, compared with the conventional crankshaft rocker compressor, crank connecting rod compressor or swash plate compressor, the present application realizes that the axial direction of the output shaft 120, the movement direction of the reciprocating body 210, and the compression direction of the piston 230 are kept consistent, which helps to reduce the vibration and friction damage between the structures and helps to improve the working reliability of the structure. In addition, the feature of the power mechanism 110 being offset relative to the compression assembly 200 helps to avoid direct drive of the power mechanism 110, thereby reducing vibration transmission and optimizing the structural layout.

[0060] Combination Figure 2 and Figure 3 As shown, in some embodiments, the portable compression device 10 further includes a control mechanism 500 and a screen 12 , wherein the screen 12 is disposed on the housing 11 , the control mechanism 500 is disposed in the housing 11 , and the control mechanism 500 is electrically connected to the power source 300 and the screen 12 at the same time.

[0061] Specifically, in this embodiment, the control mechanism 500 can be used to control the opening and closing of the device, and the screen 12 can be used as a touch screen for users to perform opening and closing operations.

[0062] Combination Figure 4 As shown, in some embodiments, the gas storage mechanism 400 is in the shape of a hollow cylinder, and the axis of the gas storage mechanism 400 deviates from and is arranged parallel to the axis of the output shaft 120. In this way, the gas storage mechanism 400 can be reasonably arranged to improve the structural compactness of the portable compression device 10.

[0063] Specifically, the gas storage mechanism 400 may be in the shape of a hollow cylindrical tank, or a hollow long polygonal tank, etc. The axis of the gas storage mechanism 400 deviates from and is arranged parallel to the axis of the output shaft 120, so that the gas storage mechanism 400 can be designed as a long column. In one embodiment, the length of the gas storage mechanism 400 is consistent with the length of the overall structure composed of the compression assembly 200 and the power assembly 100, so that the gas storage capacity of the gas storage mechanism 400 is guaranteed, the space utilization of the overall structure is improved, and the structural layout of the portable compression device 10 is optimized.

[0064] Combination Fig.10 As shown, in some embodiments, the power assembly 100 also includes a transmission belt 150, which is mounted on the driving wheel 130 and the driven wheel 140. The power mechanism 110 is a motor, and the motor has a shaft parallel to the output shaft 120. The shaft is coaxially connected to the driving wheel 130, which can improve the smoothness of force transmission of the power mechanism 110.

[0065] Specifically, in this embodiment, the transmission belt 150 may be a poly-V belt or a toothed belt, etc. The arrangement that the axis of the motor (power mechanism 110) is parallel to the axis of the output shaft 120 and the shaft is coaxially connected to the driving wheel 130 helps to ensure the mutual fit of the driving wheel 130, the driven wheel 140 and the transmission belt 150, thereby helping to improve the transmission efficiency of the transmission belt 150.

[0066] Continue reading Fig.10 In some embodiments, the trajectory of the guide groove 121a is a closed curve that surrounds the shaft head 121, and the closed curve trajectory of the guide groove 121a has crests a1 and troughs a2, and the crests a1 and the troughs a2 are distributed on the circumferential surface of the shaft head 121 at intervals around the axial direction of the shaft head 121, so that the reciprocating body 210 can reciprocate along the axial direction of the shaft head 121 under the guidance of the crests a1 and the troughs a2.

[0067] Specifically, the number of the peaks a1 and the troughs a2 can be designed according to actual needs. For example, when the rotation speed of the shaft head 121 is constant, the number of the peaks a1 and the troughs a2 can be increased to increase the frequency of the reciprocating motion of the reciprocating body 210, thereby increasing the compression frequency of the piston 230. On the contrary, when the rotation speed of the shaft head 121 is constant, the number of the peaks a1 and the troughs a2 can be reduced to reduce the frequency of the reciprocating motion of the reciprocating body 210, thereby reducing the compression frequency of the piston 230.

[0068] Combination Fig.10 As shown, in some embodiments, the number of the wave crests a1 and the wave troughs a2 are both set to 2, and the wave crests a1 and the wave troughs a2 are evenly distributed at 90 degrees around the axis of the shaft head 121, so that the reciprocating body 210 can reciprocate twice within one rotation of the shaft head 121, which not only ensures the rationality of the structural arrangement, but also improves the movement efficiency of the reciprocating body 210.

[0069] Furthermore, in some embodiments, the trajectories of the guide grooves 121a of the shaft heads 121 at both ends of the output shaft 120 are arranged in a mirror-symmetrical manner perpendicular to the mid-vertical plane of the output shaft 120, so that a pair of pistons 230 can move in opposite directions to each other, thereby helping to maintain the force balance on both sides of the portable compression device 10, reduce the vibration of the portable compression device 10 during operation, and improve the working stability of the portable compression device 10.

[0070] Combination Figure 8As shown, in some embodiments, the piston 230 has a first compression surface 230a and a second compression surface 230b that are opposite to each other. The first compression surface 230a and an inner wall on one side of the cylinder body 240 constitute a first working side 240a, and the second compression surface 230b and an inner wall on the other side of the cylinder body 240 constitute a second working side. When the shaft head 121 rotates to make the rolling element 220 move along the guide groove 121a, the reciprocating body 210 drives the piston 230 to alternately reciprocate and compress the first working side 240a and the second working side.

[0071] It should be noted that the first working side 240a and the second working side refer to the compression chambers located on both sides of the piston 230. Figure 8 As shown in FIG. 1 , the piston 230 is completely in contact with the inner wall of one side of the cylinder body 240. At this time, the volume of the second working side is zero. Figure 8 Only the first working side 240a is shown in FIG. It can be understood that when the piston 230 is completely in contact with the inner wall of the other side of the cylinder body 240, the volume of the first working side 240a is zero, and the volume of the second working side reaches the maximum.

[0072] In this embodiment, the piston 230 has a first compression surface 230a and a second compression surface 230b that are separated from each other, so that when the reciprocating body 210 drives the piston 230 to reciprocate, the first compression surface 230a and the second compression surface 230b can compress and work the first working side 240a and the second working side respectively, so that the piston 230 can compress and work whether it is moving forward or backward, which helps to improve the working efficiency of the portable compression device 10 and ensure the compression effect. In addition, the output shaft 120 of the present application is provided with compression assemblies 200 at both ends, so that the present application can achieve the effect of two pistons 230 and four compression surfaces performing compression work, ensuring the working efficiency of the portable compression device 10.

[0073] Combination Figure 6 and Figure 8 As shown, in some embodiments, the portable compression device 10 also includes a first shell 600 and a second shell 700, and the first shell 600 and the second shell 700 are respectively connected to the two sides of the cylinder body 240, and the first shell 600 is provided with a first air inlet 610 and a first air outlet 620, and the first air inlet 610 and the first air outlet 620 are connected to the first working side 240a, and the second shell 700 is provided with a second air inlet 710 and a second air outlet 720, and the second air inlet 710 and the second air outlet 720 are connected to the second working side, thereby realizing independent air inlet and outlet of the first working side 240a and independent air inlet and outlet of the second working side.

[0074] Specifically, the second shell 700 serves as the air inlet and outlet of the second working side on the one hand, and is used to install and protect the reciprocating body 210 and the rolling element 220 on the other hand. This helps to improve the overall structural compactness and structural integrity of the portable compression device 10, thereby helping to reduce the volume of the portable compression device 10 and improve the portability and applicability of the portable compression device 10.

[0075] For ease of understanding, Figure 8 The portable compression device 10 shown in the figure is used to illustrate the air inlet and outlet process. Figure 8 The present application includes a first compression component 200a and a second compression component 200b. The compression process of the first compression component 200a is only described below. The compression process of the second compression component 200b is the same as that of the first compression component 200a, so it will not be repeated.

[0076] Because in the portable compression device 10 of the present application, the reciprocating body 210 can drive the piston 230 to alternately reciprocate and compress the first working side 240a and the second working side, the reciprocating motion of the piston 230 in the cylinder body 240 includes a process in which the first compression surface 230a compresses the left inner wall of the cylinder body 240, and a process in which the second compression surface 230b compresses the right inner wall of the cylinder body 240.

[0077] Specifically, Figure 8 From the perspective shown, when the piston 230 starts to compress to the left from the rightmost side of the cylinder 240 (the second compression surface 230b abuts against the right inner wall of the cylinder 240), the first air inlet 610 and the first air outlet 620 are both kept closed, and the gas in the first working side 240a is compressed as the piston 230 moves. As the piston 230 continues to compress to the left, the gas pressure in the first working side 240a gradually increases, and the gas is eventually discharged through the first air outlet 620. In addition, during this process, the second air outlet 720 is kept closed, and the second air inlet 710 is kept open, and the compressed gas flows into the second working side through the second air inlet 710.

[0078] When the first compression surface 230a of the piston 230 abuts against the leftmost inner wall of the cylinder body 240, the compression work process of the first working side 240a ends, and the piston 230 starts to move to the right and compresses the second working side.

[0079] When the piston 230 starts to compress rightward from the leftmost side of the cylinder 240 (the first compression surface 230a abuts the left inner wall of the cylinder 240), the second air inlet 710 and the second air outlet 720 both remain closed, and the gas in the second working side is compressed as the piston 230 moves. As the piston 230 continues to compress rightward, the gas pressure in the second working side gradually increases, and the gas is eventually discharged through the second air outlet 720. In addition, during this process, the first air outlet 620 remains closed, and the first air inlet 610 remains open, and the compressed gas flows into the first working side 240a through the first air inlet 610.

[0080] The above is a general process of the air inlet and outlet of the portable compression device 10, which can realize bidirectional compression of the piston 230, which helps to improve the compression effect of the portable compression device 10. Furthermore, since the compression assembly 200 is provided at both ends of the output shaft 120, the bidirectional compression of the piston 230 can be realized at both ends of the output shaft 120, which helps to further improve the compression effect of the portable compression device 10.

[0081] Continue reading Figure 8 As shown, in some embodiments, the compression component 200 also includes a first air intake valve 260 and a first air outlet valve 270, the first air intake valve 260 is arranged at the first air intake port 610, and the first air outlet valve 260 is arranged at the first air outlet port 620; the compression component 200 also includes a second air intake valve 280 and a second air outlet valve 290, the second air intake valve 280 is arranged at the second air intake port 710, and the second air outlet valve 290 is arranged at the second air outlet port 720.

[0082] The first air inlet valve 260, the first air outlet valve 270, the second air inlet valve 280 and the second air outlet valve 290 are used to control the opening and closing of the first air inlet 610, the first air outlet 620, the second air inlet 710 and the second air outlet 720 respectively, and the structure is simple and reliable.

[0083] Combination Figure 8 and Fig.10 As shown, in some embodiments, the portable compression device 10 also includes a first connecting cover 800, which is connected to one side of the first shell 600 and the second shell 700, and the first connecting cover 800 is used to connect the first air outlet 620 and the second air outlet 720; and / or the portable compression device 10 also includes a second connecting cover 900, which is connected to the other side of the first shell 600 and the second shell 700, and the second connecting cover 900 is used to connect the first air inlet 610 and the second air inlet 710.

[0084] Specifically, in this embodiment, the first connection cover 800 and the second connection cover 900 may be sealed covers, so as to connect the first air outlet 620 with the second air outlet 720, and connect the first air inlet 610 with the second air inlet 710. In addition, the first connection cover 800 and the second connection cover 900 help to improve the structural compactness and integration of the piston 230 type compressor.

[0085] Furthermore, combined with Figure 8 As shown, in some embodiments, the compression assembly 200 is also provided with a total air inlet 630 and a total air outlet 810. The total air inlet 630 is provided on a side of the first shell 600 away from the second connecting cover 900, and the total air outlet 810 is provided on the first connecting cover 800. In this way, the air inlet and outlet of the portable compression device 10 can be integrated, thereby improving the convenience of controlling the air inlet and outlet.

[0086] Continue reading Figure 8 In some embodiments, the piston 230 type compressor further includes a first valve plate 1000 and a second valve plate 1100, wherein the first valve plate 1000 is sandwiched between the first housing 600 and the cylinder body 240, and the second valve plate 1100 is sandwiched between the second housing 700 and the cylinder body 240. Specifically, the first valve plate 1000 is opposite to the first compression surface 230a of the piston 230, and the second valve plate 1100 is opposite to the second compression surface 230b of the piston 230.

[0087] The first valve plate 1000 and the second valve plate 1100 are respectively used as sealing members between the first housing 600 or the second housing 700 and the cylinder body 240, which helps to improve the sealing performance of the inlet and outlet air. In some embodiments, first sealing members are provided on both sides of the first valve plate 1000, and second sealing members 1110 are provided on both sides of the second valve plate 1100, which helps to improve the sealing performance of the piston 230 compressor and ensure the reliability of the compression of the piston 230.

[0088] Combination Fig. 9 As shown, in some embodiments, the second valve plate 1100 is provided with a second air inlet hole 1100a and a second air outlet hole 1100b, and the second air inlet valve 280 and the second air outlet valve 290 can be connected to the second air inlet hole 1100a and the second air outlet hole 1100b respectively. Fig. 9 As shown, a second sealing member 1110 is further provided on the second valve plate 1100 , which is beneficial to improving the inlet and outlet air sealing effect of the second valve plate 1100 , thereby ensuring the compression effect of the piston 230 type compressor.

[0089] Similarly, the first valve plate 1000 is provided with a first air inlet hole and a first air outlet hole, and the first air inlet valve 260 and the first air outlet valve 270 can be connected to the first air inlet hole and the first air outlet hole respectively. In addition, the first valve plate 1000 is also provided with a first sealing member, which is beneficial to improve the sealing effect of the air inlet and outlet of the first valve plate 1000, thereby ensuring the compression effect of the gas.

[0090] Specifically, the first sealing member and the second sealing member 1110 are both in the shape of an "8", which helps to seal the air intake and air outlet processes respectively.

[0091] Combination Figure 8 , Fig. 9 and Fig.10 As shown, in some embodiments, the reciprocating body 210 includes a connecting body 211 and a nest 212, the rolling element 220 is embedded in the nest 212, the connecting body 211 is provided with a locking structure 2111, and the portable compression device 10 also includes a connecting shaft 1400, the connecting shaft 1400 is connected to the piston 230, and a connecting disk is provided at one end of the connecting shaft 1400 away from the piston 230, and the connecting disk is fixed to the locking structure 2111.

[0092] Specifically, the connecting body 211 and the nesting 212 can be integrally formed or bolted. The axis of the connecting shaft 1400 is consistent with the movement direction of the connecting body 211, which helps to ensure the smoothness of the movement of the piston 230. In addition, the end of the connecting shaft 1400 away from the piston 230 is fixed to the locking structure 2111, which helps to improve the connection stability between the connecting shaft 1400 and the connecting body 211 and improve the working reliability of the piston 230 compressor.

[0093] Continue reading Fig. 9 In some embodiments, the connector 211 is provided with a perforated structure 2112 , and the compression assembly 200 further includes a guide rod assembly 250 , and the guide rod assembly 250 is provided through the perforated structure 2112 .

[0094] Specifically, the guide rod assembly 250 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 250 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 120.

[0095] Combination Figure 8As shown, in some embodiments, the power assembly 100 also includes a first bearing assembly 160 and a second bearing assembly 170, the first bearing assembly 160 is sleeved on the output shaft 120 located on one side of the driven wheel 140, and the second bearing assembly 170 is sleeved on the output shaft 120 located on the other side of the driven wheel 140.

[0096] Specifically, combined Figure 8 As shown, the first bearing assembly 160 includes a first rolling bearing 161 and a first plane bearing 162; the second bearing assembly 170 includes a second rolling bearing 171 and a second plane bearing 172. The arrangement of the rolling bearings helps to reduce the rotational friction of the output shaft 120. In addition, the arrangement of the plane bearings helps to improve the bearing effect on the output shaft 120, thereby improving the structural stability of the piston 230 compressor and reducing the vibration effect of the rotation of the output shaft 120 on the piston 230 compressor.

[0097] Combination Figure 6 As shown, in some embodiments, the piston 230 compressor further includes a first heat dissipation mechanism 1200, which is wrapped around the outer surface of the cylinder 240. Specifically, the first heat dissipation mechanism 1200 may be composed of a plurality of heat dissipation fins, so that the heat of the cylinder 240 can be discharged in time.

[0098] Combination Figure 5 As shown, in some embodiments, the piston 230 type compressor also includes a main body cover 1500 and a second heat dissipation mechanism 1300. The main body cover 1500 is arranged to wrap the compression assembly 200. The number of the second heat dissipation mechanisms 1300 is two. The two second heat dissipation mechanisms 1300 are respectively fitted with two sides of the main body cover 1500 along the axial direction of the output shaft 120, which helps to achieve independent control of the second heat dissipation mechanism 1300 and ensure the heat dissipation effect of the piston 230 type compressor.

[0099] Specifically, in this embodiment, the first compression assembly 200a and the second compression assembly 200b are both provided with corresponding mainframe covers 1500. The mainframe covers 1500 are used to wrap and protect the first compression assembly 200a and the second compression assembly 200b.

[0100] In addition, the heat dissipation mechanism of a conventional compressor is generally connected to the power mechanism 110, which will cause the heat dissipation mechanism to stop operating as the power mechanism 110 stops rotating, thereby causing poor heat dissipation effect of the compressor. Figure 5As shown, the second heat dissipation mechanism 1300 is attached to one side of the host housing 1500, so that the second heat dissipation mechanism 1300 and the power mechanism 110 are independently arranged, providing conditions for independent control of the second heat dissipation mechanism 1300. More specifically, the second heat dissipation mechanism 1300 can be externally connected to a power drive source (not shown), thereby realizing independent heat dissipation control of the second heat dissipation mechanism 1300.

[0101] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0102] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A portable compression device, characterized in that: include: A power assembly, the power assembly comprising a power mechanism, an output shaft, a driving wheel and a driven wheel, the output shaft is passed through the driven wheel, the driving wheel and the driven wheel are connected to each other in a transmission manner, the power mechanism is used to drive the driving wheel to rotate so as to drive the driven wheel to rotate, so that the driven wheel drives the output shaft to rotate around its axis; A compression assembly, the compression assembly comprising a reciprocating body, a rolling element, a piston and a cylinder body, the piston is arranged in the cylinder body, the rolling element is embedded in the reciprocating body, and the reciprocating body is connected to the piston; The two ends of the output shaft are each connected to a shaft head, and are linked to the reciprocating body of the compression assembly through the shaft head; wherein the shaft head is provided with a guide groove along its circumferential surface, and the rolling element of the compression assembly located on the corresponding side is clamped in the guide groove, so that the shaft head is linked to the corresponding reciprocating body, and the track of the guide groove is configured as follows: when the shaft head rotates to make the rolling element move along the guide groove, the reciprocating body drives the piston to reciprocate and compress in the cylinder body; An air storage mechanism, the air storage mechanism being in communication with the cylinder body; and A power source is provided with a wiring structure for externally connecting to alternating current. The power source and the power mechanism are respectively arranged on both sides of the driving wheel, and the power source is electrically connected to the power mechanism.

2. The portable compression device according to claim 1, characterized in that The gas storage mechanism is in the shape of a hollow cylinder, and the axis of the gas storage mechanism deviates from and is arranged parallel to the axis of the output shaft.

3. The portable compression device according to claim 1, characterized in that The piston has a first compression surface and a second compression surface that are opposite to each other. The first compression surface and an inner wall of one side of the cylinder body constitute a first working side, and the second compression surface and an inner wall of the other side of the cylinder body constitute a second working side. When the shaft head rotates to cause the rolling element to move along the guide groove, the reciprocating body drives the piston to alternately reciprocate and compress the first working side and the second working side.

4. The portable compression device according to claim 3, characterized in that The portable 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 first air inlet and the first air outlet are connected to the first working side, and the second shell is provided with a second air inlet and a second air outlet, the second air inlet and the second air outlet are connected to the second working side.

5. The portable compression device according to claim 4, characterized in that The portable compression device further includes a first connection cover, the first connection cover is connected to one side of the first shell and the second shell, and the first connection cover is used to connect the first air outlet and the second air outlet; And / or, the portable compression device further comprises a second connection cover, the first connection cover is connected to the other side of the first shell and the second shell, and the second connection cover is used to connect the first air inlet and the second air inlet.

6. The portable compression device according to claim 5, characterized in that The compression assembly is further provided with a main air inlet and a main air outlet. The main air inlet is provided on a side of the first shell away from the second connection cover, and the main air outlet is provided on the first connection cover.

7. The portable 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.

8. The portable compression device according to claim 7, characterized in that The tracks of the guide grooves of the shaft heads at both ends of the output shaft are arranged in mirror symmetry with respect to a mid-vertical plane perpendicular to the output shaft.

9. The portable 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 portable 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.

10. The portable compression device according to claim 1, characterized in that The portable compression device includes a first heat dissipation mechanism, which is wrapped around the outer surface of the cylinder; And / or, the portable compression device also includes a main body cover and a second heat dissipation mechanism, the main body cover wraps the compression assembly, the number of the second heat dissipation mechanisms is two, and the two second heat dissipation mechanisms are respectively attached to the two sides of the main body cover along the axial direction of the output shaft.

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