Air compressor

Abstract

The air compressor comprises at least one air storage tank, a machine head, a first air conveying pipeline and a second air conveying pipeline, the machine head comprises an air compression pump and at least one air conveying quick connector, the first air conveying pipeline is used for being in fluid connection between the at least one air storage tank and the air compression pump, and the second air conveying pipeline is used for being in fluid connection between the at least one air storage tank and the air compression pump. Air compressed by the air compression pump is conveyed to the at least one air storage tank through the first air conveying pipeline, and the second air conveying pipeline is used for being in fluid connection between the at least one air storage tank and the at least one air conveying quick connector. Compressed air in the at least one air storage tank is conveyed to the at least one air conveying quick connector through the first air conveying pipeline, the two air compressors can be stacked together in the vertical direction, and under the state that the two air compressors are stacked together in the vertical direction, the upper air compressor is supported on a machine head of the lower air compressor. According to the technical scheme, two air compressors can be stacked up and down, and the occupied area is saved.

Description

Technical Field

[0001] This patent application relates to an air compressor, and particularly to an air compressor that can be stacked vertically. Background Art

[0002] An air compressor is a device for producing compressed air, which can generate compressed air for use by pneumatic tools (such as pneumatic nail guns, pneumatic hammers, pneumatic drill guns, etc.). An air compressor usually includes an air storage tank and an air compression pump. The air compression pump usually includes a frame, a motor, a transmission device, a cylinder, a connecting rod, a piston that can reciprocate in the cylinder to compress air, and a cylinder head. When the air compression pump works, its motor drives the piston to reciprocate in the cylinder through the transmission device and the connecting rod to continuously generate compressed air. The compressed air produced by the air compression pump is transported to the air storage tank through an air delivery pipe for storage. As the number of air compressors increases, the floor area usually increases proportionally, and existing air compressors need to be improved. Summary of the Utility Model

[0003] This patent application provides an air compressor. Based on this technical solution, it is beneficial for two air compressors of this application to be stacked vertically to save floor area.

[0004] The air compressor of this patent application includes at least one air storage tank, a machine head, a first air delivery pipe, and a second air delivery pipe. The machine head includes an air compression pump and at least one air delivery quick-connect joint. The first air delivery pipe is used for fluid connection between the at least one air storage tank and the air compression pump. The air compressed by the air compression pump is transported to the at least one air storage tank through the first air delivery pipe. The second air delivery pipe is used for fluid connection between the at least one air storage tank and the at least one air delivery quick-connect joint. The compressed air in the at least one air storage tank is transported to the at least one air delivery quick-connect joint through the first air delivery pipe. Two such air compressors can be stacked vertically. In the state where two air compressors are stacked vertically, the upper air compressor is supported on the machine head of the lower air compressor.

[0005] Based on this design, it promotes the implementation of stacking two air compressors vertically. Two air compressors stacked vertically basically only occupy the floor area of one air compressor, which can effectively save floor area. Based on the upper air compressor being supported on the machine head of the lower air compressor, it is convenient and effective to place the upper air compressor on the lower air compressor.

[0006] Optionally, the air compressor further includes at least one buckle. The at least one buckle is exposed outside the machine head and is rotatably connected to the machine head. In the state where two air compressors are stacked vertically, the at least one buckle of the lower air compressor can be buckled on the upper air compressor to lock the upper air compressor on the machine head of the lower air compressor.

[0007] Optionally, the machine head further includes a housing. The air compression pump is located inside the housing. The at least one air storage tank is located below the housing. The at least one buckle is rotatably connected to the housing. When two air compressors are stacked vertically, the upper air compressor supports on the housing of the machine head of the lower air compressor.

[0008] Optionally, the at least one buckle includes a first buckle and a second buckle. The first buckle and the second buckle are located on the left and right sides of the machine head of the air compressor. The at least one air storage tank includes a first air storage tank and a second air storage tank. The first air storage tank and the second air storage tank are arranged side by side and horizontally disposed at the lower side of the machine head. The first air storage tank and the second air storage tank are spaced apart front and back. The vertical projection of the first buckle and the vertical projection of the second buckle are respectively at least partially located between the vertical projection of the first air storage tank and the vertical projection of the second air storage tank.

[0009] Optionally, the housing further includes a first fitting portion and a second fitting portion. The first fitting portion and the second fitting portion are located at opposite ends of the bottom of the housing. The first fitting portion and the second fitting portion are respectively at least partially embedded between the first air storage tank and the second air storage tank. The first fitting portion and the first buckle are correspondingly located on the upper and lower sides of the machine head. The second fitting portion and the second buckle are correspondingly located on the upper and lower sides of the machine head. The first fitting portion includes a first arc surface and a second arc surface. The first arc surface is close to the first air storage tank and matches the contour of the first air storage tank. The second arc surface is close to the second air storage tank and matches the contour of the second air storage tank. The second fitting portion includes a third arc surface and a fourth arc surface. The third arc surface is close to the first air storage tank and matches the contour of the first air storage tank. The fourth arc surface is close to the second air storage tank and matches the contour of the second air storage tank.

[0010] Optionally, the housing includes at least one receiving groove. The buckle has a storage angular position, an opening angular position, and a locking angular position between the storage angular position and the opening angular position. The buckle is limited to rotate between the storage angular position and the opening angular position. When two air compressors are stacked vertically and the buckle of the lower air compressor is at the locking angular position, the buckle of the lower air compressor buckles on the upper air compressor. The buckle passes through the locking angular position during the process of turning from the storage angular position to the opening angular position. When the buckle is at the storage angular position, the buckle is received in the corresponding receiving groove. When the buckle is at the opening angular position, the buckle is in an open state.

[0011] Optionally, the at least one buckle includes a first buckle and a second buckle. The first buckle includes a first buckle protrusion, and the second buckle includes a second buckle protrusion. The at least one receiving groove is recessed from the upper side of the housing. The at least one receiving groove includes a first receiving groove and a second receiving groove. When the first buckle is in the storage angular position, the first buckle protrusion is located in the first receiving groove and abuts against the bottom surface of the first receiving groove; when the second buckle is in the storage angular position, the second buckle protrusion is located in the second receiving groove and abuts against the bottom surface of the second receiving groove. After the buckle is rotated from the storage angular position to the locking angular position and then released, the buckle will fall back to the storage angular position under the action of its own gravity.

[0012] Optionally, after the buckle is rotated to the open angular position and then released, the buckle will remain in the open angular position; when the buckle is in the open angular position, the buckle is in an outwardly turned and inclined upright state.

[0013] Optionally, the housing includes a top wall, a bottom wall, a left side wall, a right side wall, a front side wall, and a rear side wall. The top wall and the bottom wall are located on the upper and lower sides of the machine head, the left side wall and the right side wall are located on the left and right sides of the machine head, and the front side wall and the rear side wall are located on the front and rear sides of the machine head. The air compressor is located in the receiving space jointly surrounded by the top wall, the bottom wall, the left side wall, the right side wall, the front side wall, and the rear side wall. The top wall, the bottom wall, the left side wall, the right side wall, the front side wall, and the rear side wall together form a rectangular box body. The at least one air storage tank is exposed on the lower side of the bottom wall; when two air compressors are stacked on top of each other, the upper air compressor is supported on the top wall of the lower air compressor; the at least one receiving groove is recessed in the top wall; when the buckle is in the storage angular position, the buckle lies in the corresponding receiving groove.

[0014] Optionally, the air compressor further includes a first limiting protrusion and a second limiting protrusion. The first limiting protrusion and the second limiting protrusion are located at the bottom of the air compressor. The at least one buckle includes a first buckle and a second buckle. The at least one receiving groove includes a first receiving groove and a second receiving groove. The first buckle can be correspondingly received in the first receiving groove, and the second buckle can be correspondingly received in the second receiving groove. When two air compressors are stacked on top of each other, the first limiting protrusion of the upper air compressor is downwardly inserted into the first receiving groove of the lower air compressor and is limited in the first receiving groove of the lower air compressor, and the second limiting protrusion of the upper air compressor is downwardly inserted into the second receiving groove of the lower air compressor and is limited in the second receiving groove of the lower air compressor.

[0015] Optionally, the at least one receiving groove is formed by concave - down from the upper side of the outer shell. The at least one receiving groove includes a first receiving groove and a second receiving groove. The at least one buckle includes a first buckle and a second buckle. The first buckle has a first stopping surface. After the first buckle rotates along a first opening direction to an opening - angle position, the first stopping surface of the first buckle supports on the bottom surface of the corresponding first receiving groove, so that the first buckle cannot continue to rotate along the first opening direction, and thus the first buckle is stopped at the opening - angle position. The second buckle has a second stopping surface. After the second buckle rotates along a second opening direction to an opening - angle position, the second stopping surface of the second buckle supports on the bottom surface of the corresponding second receiving groove, so that the second buckle cannot continue to rotate along the second opening direction, and thus the second buckle is stopped at the opening - angle position.

[0016] Optionally, the air compressor further includes a plurality of support feet. The plurality of support feet are located at the bottom of the air compressor. When the air compressor is placed on the ground, it is supported by the plurality of support feet. The outer shell further includes a plurality of corner parts. The plurality of corner parts are located at the top edge of the outer shell. When two air compressors are stacked on top of each other, the positions of the support feet of the upper air compressor correspond to the positions of the corner parts of the lower air compressor one by one.

[0017] Optionally, the plurality of support feet include a first support foot, a second support foot, a third support foot, and a fourth support foot. The plurality of corner parts include a first corner part, a second corner part, a third corner part, and a fourth corner part. The first corner part and the second corner part are located at the front and rear ends of the left - hand side edge of the top of the outer shell. The third corner part and the fourth corner part are located at the front and rear ends of the right - hand side edge of the top of the outer shell. When two air compressors are stacked on top of each other, the first support foot of the upper air compressor is nested with the first corner part of the lower air compressor, the second support foot of the upper air compressor is nested with the second corner part of the lower air compressor, the third support foot of the upper air compressor is nested with the third corner part of the lower air compressor, and the fourth support foot of the upper air compressor is nested with the fourth corner part of the lower air compressor.

[0018] Optionally, the outer shell further includes a top wall. The top wall is detachable. The top wall forms the upper cover of the machine head. The plurality of corner parts are provided on the top wall and are part of the top wall. When two air compressors are stacked on top of each other, the upper air compressor is supported on the top wall of the lower air compressor. The plurality of corner parts are located at the four corners of the top wall. When two air compressors are stacked on top of each other, the support feet of the upper air compressor are correspondingly adapted to the corner parts of the lower air compressor one by one.

[0019] Optionally, the air compressor further includes a plurality of support feet and at least one support base. When two such air compressors are stacked vertically, the plurality of support feet of the upper air compressor do not contact the lower air compressor; when two such air compressors are stacked vertically, the at least one support base of the upper air compressor supports the lower air compressor; when the air compressor is placed on the ground, the plurality of support feet support the ground and the at least one support base is suspended relative to the ground.

[0020] Optionally, the air compressor further includes at least one support base. The at least one support base includes a first support base and a second support base. The at least one air storage tank includes a first air storage tank and a second air storage tank. The first air storage tank and the second air storage tank are arranged in parallel. The first air storage tank and the second air storage tank are located below the air head and are in a horizontal lying state. The first air storage tank and the second air storage tank are spaced apart in a first direction. The first support base and the second support base are spaced apart in a second direction, and the first direction is perpendicular to the second direction. The first support base and the second support base are respectively at least partially located below the first air storage tank and at least partially located below the second air storage tank. When two such air compressors are stacked vertically, the first support base of the upper air compressor and the second support base of the upper air compressor respectively support on the top of the lower air compressor.

[0021] Optionally, the air compressor further includes at least one buckle. The at least one buckle includes a first buckle and a second buckle. The first buckle and the second buckle are located on the left and right sides of the air head of the air compressor. The first air storage tank and the second air storage tank are spaced apart front and back. The first support base and the second support base are spaced apart left and right. When two such air compressors are stacked vertically, the first buckle of the lower air compressor can be buckled on the first support base of the upper air compressor and is located on the left side of the first support base of the upper air compressor, and the second buckle of the lower air compressor can be buckled on the second support base of the upper air compressor and is located on the right side of the second support base of the upper air compressor.

[0022] Optionally, both the first support base and the second support base include a plurality of positioning protrusions that protrude downward; the air compressor head further includes at least one positioning groove. When two air compressors are stacked vertically, the positioning protrusions of the upper air compressor are correspondingly embedded downward into the positioning grooves of the lower air compressor; the air compressor head further includes a top wall. When two air compressors are stacked vertically, the upper air compressor is supported on the top wall of the lower air compressor; the plurality of positioning protrusions include a first positioning protrusion protruding downward from the first support portion, a second positioning protrusion protruding downward from the second support portion, a third positioning protrusion protruding downward from the third support portion, and a fourth positioning protrusion protruding downward from the fourth support portion; the at least one positioning groove is respectively recessed in the top wall. The at least one positioning groove includes a first positioning groove, a second positioning groove, a third positioning groove, and a fourth positioning groove. When two air compressors are stacked vertically, the first positioning protrusion of the upper air compressor is correspondingly embedded downward into the first positioning groove of the lower air compressor, the second positioning protrusion of the upper air compressor is correspondingly embedded downward into the second positioning groove of the lower air compressor, the third positioning protrusion of the upper air compressor is correspondingly embedded downward into the third positioning groove of the lower air compressor, and the fourth positioning protrusion of the upper air compressor is correspondingly embedded downward into the fourth positioning groove of the lower air compressor.

[0023] Optionally, when viewed from the bottom of the air compressor upwards, the first support base is arched and protrudes in a direction away from the second support base; when viewed from the bottom of the air compressor upwards, the second support base is arched and protrudes in a direction away from the first support base; the first support base includes a first support portion and a second support portion, the second support base includes a third support portion and a fourth support portion, the first support portion and the third support portion are located below the first air storage tank, the second support portion and the fourth support portion are located below the second air storage tank. When two air compressors are stacked vertically, the first support portion of the upper air compressor, the second support portion of the upper air compressor, the third support portion of the upper air compressor, and the fourth support portion of the upper air compressor are respectively supported on the lower air compressor.

[0024] Optionally, the first supporting part includes a first supporting bottom surface, the second supporting part includes a second supporting bottom surface, the third supporting part includes a third supporting bottom surface, and the fourth supporting part includes a fourth supporting bottom surface. When two air compressors are stacked on top of each other, the first supporting bottom surface of the first supporting part of the upper air compressor, the second supporting bottom surface of the second supporting part of the upper air compressor, the third supporting bottom surface of the third supporting part of the upper air compressor, and the fourth supporting bottom surface of the fourth supporting part of the upper air compressor respectively abut and support against the air compressor head of the lower air compressor; the first supporting part and the second supporting part are located at opposite ends of the first supporting seat, and the third supporting part and the fourth supporting part are located at opposite ends of the second supporting seat; the air compressor further includes a plurality of supporting feet. When the air compressor is placed on the ground, it is supported on the ground by means of the plurality of supporting feet. The plurality of supporting feet includes a first supporting foot, a second supporting foot, a third supporting foot, and a fourth supporting foot. The first supporting part is adjacent to the first supporting foot, the second supporting part is adjacent to the second supporting foot, the third supporting part is adjacent to the third supporting foot, and the fourth supporting part is adjacent to the fourth supporting foot. The first supporting part and the third supporting part are located between the first supporting foot and the third supporting foot, and the second supporting part and the fourth supporting part are located between the second supporting foot and the fourth supporting foot; the first supporting foot and the third supporting foot are respectively located below the first air storage tank and are fixedly connected to the first air storage tank, and the second supporting foot and the fourth supporting foot are respectively located below the second air storage tank and are fixedly connected to the second air storage tank.

[0025] Optionally, the air compressor further includes at least one buckle. The first supporting seat further includes a first connecting part and a first buckle matching part. The first connecting part connects the first supporting part and the second supporting part. The second supporting seat further includes a second connecting part and a second buckle matching part. The second connecting part connects the third supporting part and the fourth supporting part. The at least one buckle includes a first buckle and a second buckle. The first buckle matching part is arranged on one side of the first connecting part away from the second connecting part and is correspondingly located below the first buckle. The second buckle matching part is arranged on one side of the second connecting part away from the first connecting part and is correspondingly located below the second buckle. When two air compressors are stacked on top of each other, the first buckle of the lower air compressor can be correspondingly buckled with the first buckle matching part of the upper air compressor, and the second buckle of the lower air compressor can be correspondingly buckled with the second buckle matching part of the upper air compressor.

[0026] Optionally, the first air storage tank and the second air storage tank are arranged side by side and horizontally below the air compressor head. The first air storage tank and the second air storage tank are arranged at intervals one in front of the other. The vertical projections of the first buckle matching part, the second buckle matching part, the first buckle, and the second buckle respectively at least partially lie between the vertical projections of the first air storage tank and the second air storage tank. Description of the Drawings

[0027] Figure 1 The first three-dimensional view of the air compressor for this patent application (the buckle is in the storage angle position);

[0028] Figure 2 The second three-dimensional view of the air compressor for this patent application (the buckle is in the locking angle position);

[0029] Figure 3 The third three-dimensional view of the air compressor for this patent application (the buckle is in the opening angle position);

[0030] Figure 4 The fourth three-dimensional view of the air compressor for this patent application (the buckle is in the opening angle position);

[0031] Figure 5 The fifth three-dimensional view of the air compressor for this patent application;

[0032] Figure 6 The first exploded view of the air compressor for this patent application;

[0033] Figure 7 The second exploded view of the air compressor for this patent application;

[0034] Figure 8 The third exploded view of the air compressor for this patent application (the buckle is in the storage angle position);

[0035] Figure 9 A three-dimensional schematic diagram of two air compressors for this patent application stacked on top of each other (the buckle is in the opening angle position and the buckle of the lower air compressor is buckled on the upper air compressor);

[0036] Figure 10 Another three-dimensional schematic diagram of two air compressors for this patent application stacked on top of each other (the buckle is in the opening angle position and the buckle of the lower air compressor is buckled on the upper air compressor);

[0037] Figure 11 A vertical cross-sectional view of two air compressors for this patent application stacked on top of each other (the buckle is in the opening angle position and the buckle of the lower air compressor is buckled on the upper air compressor and the air compression pump etc. inside the head of the upper air compressor are not shown);

[0038] Figure 12 is Figure 11 a partial enlarged view of. Detailed implementation manners

[0039] Refer to Figures 1 to 12As shown in the figure, the air compressor 1 of the present application includes at least one air storage tank, a machine head 2, and a first air delivery pipeline 100. The machine head 2 includes an air compression pump 20, and the air compression pump 20 is used to compress air. The first air delivery pipeline 100 is used for fluid connection between the at least one air storage tank and the air compression pump 20. The air compressed by the air compression pump 20 is delivered to the at least one air storage tank via the first air delivery pipeline 100. Two air compressors 1 can be stacked vertically on top of each other. When two air compressors 1 are stacked vertically on top of each other (refer to Figures 9 - 12 the figure shown), the upper air compressor 1 is supported on the machine head 2 of the lower air compressor 1; the air compression pump 20 is located inside the machine head 2. Based on this design, it promotes the implementation of stacking two air compressors 1 vertically on top of each other. Stacking two air compressors 1 vertically on top of each other only occupies the floor space of one air compressor 1, which can effectively save floor space; based on the upper air compressor 1 being supported on the machine head 2 of the lower air compressor 1, it enables the upper air compressor 1 to be placed more reliably on the lower air compressor 1. The manufacturing factory can stack the air compressors 1 when needed to save floor space; the top of the machine head 2 of the air compressor 1 constitutes a platform for placing another air compressor 1 or other equipment.

[0040] The air compression pump 20 is in a horizontal lying state, and the at least one air storage tank is in a horizontal lying state on the lower side of the machine head 2 to facilitate reducing the center of gravity of the air compressor 1 and making it not easy to tip over after two air compressors 1 are stacked vertically on top of each other. The air compression pump 20 includes a frame 200, a motor 201, a transmission device, a cylinder, a cylinder head 202, a connecting rod 203, a piston that can reciprocate in the cylinder to compress air, and a cooling fan 204. The motor 201, the transmission device, the cylinder, the cylinder head 202, etc. are arranged on the frame 200. When the air compression pump 20 is working, its motor 201 drives the piston to reciprocate in the cylinder via the transmission device and the connecting rod 203 to continuously generate compressed air, and the compressed air is delivered to the at least one air storage tank for storage via the first air delivery pipeline 100. The transmission device can be a belt transmission device, including a belt 205, a driving pulley, and a driven pulley; the rotating shaft of the motor 201 extends horizontally, and the rated power of the motor 201 is between 90w and 3100w, preferably between 300w and 1900w. The motor 201 can be a brushed motor or a brushless motor.

[0041] The air compressor 1 further includes a second air delivery pipeline 101, and the machine head 2 further includes at least one air delivery quick-connect joint 21. The second air delivery pipeline 101 is used for fluid connection between the at least one air storage tank and the at least one air delivery quick-connect joint 21. The compressed air in the at least one air storage tank is delivered to the at least one air delivery quick-connect joint 21 via the first air delivery pipeline 100 to facilitate supplying compressed air for external equipment connected to the air delivery quick-connect joint 21 to use.

[0042] The air compressor 1 further includes at least one buckle, and the at least one buckle is exposed outside the machine head 2. The at least one buckle is rotatably connected to the machine head 2. When two air compressors 1 are stacked vertically, the at least one buckle of the lower air compressor 1 can be buckled on the upper air compressor 1 to lock the upper air compressor 1 on the lower air compressor 1. With such a design, the upper air compressor 1 and the lower air compressor 1 can be more reliably kept in a vertically stacked state.

[0043] The machine head 2 further includes a housing 22, the air compression pump 20 is located inside the housing 22, the at least one air storage tank is located below the housing 22, and the at least one buckle is rotatably connected to the housing 22. When two air compressors 1 are stacked vertically, the upper air compressor 1 is supported on the housing 22 of the machine head 2 of the lower air compressor 1.

[0044] The at least one buckle includes a first buckle 30 and a second buckle 31. The first buckle 30 and the second buckle 31 are located on the left and right sides of the machine head 2 of the air compressor 1. The at least one air storage tank includes a first air storage tank 110 and a second air storage tank 111. The first air storage tank 110 and the second air storage tank 111 are arranged side by side in a lying state below the machine head 2, and the first air storage tank 110 and the second air storage tank 111 are arranged at intervals one in front of the other. The vertical projections of the first buckle 30 and the second buckle 31 are at least partially located between the vertical projections of the first air storage tank 110 and the second air storage tank 111. With such a design, the distribution of each component is more coordinated, which is beneficial to the balance of the structure of the air compressor 1. In this application, the vertical projection refers to the projection formed by projecting in the vertical direction onto a horizontal plane. The at least one air storage tank is in a lying state, and the first air storage tank 110 and the second air storage tank 111 are parallel. In this embodiment, the at least one buckle has only two buckles, namely the first buckle 30 and the second buckle 31.

[0045] The outer shell 22 further includes a first adaptation part 228 and a second adaptation part 229. The first adaptation part 228 and the second adaptation part 229 are located at opposite ends of the bottom of the outer shell 22. The first adaptation part 228 and the second adaptation part 229 are at least partially embedded between the first air storage tank 110 and the second air storage tank 111 respectively. The first adaptation part 228 and the first buckle are correspondingly located on the upper and lower sides of the machine head. The second adaptation part 229 and the second buckle are correspondingly located on the upper and lower sides of the machine head. The first adaptation part 228 includes a first arc surface 2280 and a second arc surface 2281. The first arc surface 2280 is close to the first air storage tank 110 and matches the contour of the first air storage tank 110. The second arc surface 2281 is close to the second air storage tank 111 and matches the contour of the second air storage tank 111. The second adaptation part 229 includes a third arc surface 2290 and a fourth arc surface 2291. The third arc surface 2290 is close to the first air storage tank 110 and matches the contour of the first air storage tank 110. The fourth arc surface 2291 is close to the second air storage tank 111 and matches the contour of the second air storage tank 111. Based on the design of the first adaptation part 228 and the second adaptation part 229, it promotes the outer shape contours of the machine head 2 and the outer shell 22 to make up for each other and fit more closely, and can also play a certain decorative role.

[0046] In this embodiment, the air pressure in the first air storage tank 110 is equal to the air pressure in the second air storage tank 111. The first air storage tank 110 and the second air storage tank 111 maintain an isobaric state through the connection of the connecting pipe 12. The connecting pipe 12 is welded to connect the first air storage tank 110 and the second air storage tank 111. The first air storage tank 110 is located upstream of the second air storage tank 111. The first gas transmission pipeline 100 is fluidly connected to the first air storage tank 110 and the air compressor 20. The compressed air generated by the air compressor 20 is conveyed to the first air storage tank 110 via the first gas transmission pipeline 100, and further enters the second air storage tank 111 via the first air storage tank 110. The second gas transmission pipeline 101 is fluidly connected to the second air storage tank 111 and the at least one gas transmission quick connector 21. The compressed air in the second air storage tank 111 is conveyed to the at least one gas transmission quick connector 21 via the first gas transmission pipeline 100 for external equipment to use. The compressed air in the first air storage tank 110 and the compressed air in the second air storage tank 111 are consumed synchronously and reduced.

[0047] The housing 22 includes at least one receiving groove, and the at least one buckle corresponds to the at least one receiving groove one by one. The buckle has a storage angular position, an opening angular position, and a locking angular position between the storage angular position and the opening angular position. The buckle is limited to rotate between the storage angular position and the opening angular position. When two air compressors 1 are stacked vertically and the buckle of the lower air compressor 1 is buckled on the upper air compressor 1, the buckle of the lower air compressor 1 is in the locking angular position; in other words, when two air compressors 1 are stacked vertically and the buckle of the lower air compressor 1 is in the locking angular position, the buckle of the lower air compressor 1 is buckled on the upper air compressor 1; in other words, after two air compressors 1 are stacked vertically, rotate the buckle of the lower air compressor 1 from the opening angular position to the locking angular position to realize that the buckle of the lower air compressor 1 is buckled on the upper air compressor 1.

[0048] When the first buckle 30 and the second buckle 31 are in the opening angular position, the distance between the first buckle 30 and the second buckle 31 is in a state of being wider at the top and narrower at the bottom, so as to facilitate placing the air compressor 1 on another air compressor 1 to achieve vertical stacking.

[0049] The buckle rotates through the locking angular position during the process of turning from the storage angular position to the opening angular position; when the buckle is in the storage angular position, the buckle is in a retracted state; when the buckle is in the storage angular position, the buckle is received in the corresponding receiving groove, so that the buckle is retracted; when the buckle is in the opening angular position, the buckle is in an open state to facilitate placing the air compressor 1 on another air compressor 1 to achieve vertical stacking; the rotation angle of the buckle from the storage angular position to the opening angular position is greater than 95 degrees and less than 175 degrees. In this embodiment, the rotation angle of the buckle from the storage angular position to the opening angular position is about 135 degrees.

[0050] The first buckle 30 includes a first buckle protrusion 300, and the second buckle 31 includes a second buckle protrusion 310. The at least one receiving groove is recessed from the upper side of the housing 22. The at least one receiving groove includes a first receiving groove 2200 and a second receiving groove 2201. When the first buckle 30 is in the storage angular position, the first buckle protrusion 300 is located in the first receiving groove 2200 and abuts against the bottom surface 2202 of the first receiving groove 2200; when the second buckle 31 is in the storage angular position, the second buckle protrusion 310 is located in the second receiving groove 2201 and abuts against the bottom surface 2203 of the second receiving groove 2201; after rotating the buckle from the storage angular position to the locking angular position and then releasing the buckle, the buckle will fall back to the storage angular position under the action of its own gravity; with such a design, it is beneficial to the storage of the buckle, and the buckle can easily stay in the storage angular position.

[0051] After rotating the buckle to the open angle position and releasing it, the buckle will remain in the open angle position; when the buckle is in the open angle position, the buckle is turned outwards and stands obliquely. With such a design, it is easy to open the buckle and keep it in the open angle position. When stacking is required, it is easy to open the buckle of one of the two air compressors 1 and keep it in the open angle position so as to place the other air compressor 1 on it. Moreover, the buckle in the state of being turned outwards and standing obliquely facilitates the user to turn it inwards subsequently, so that the buckle of the lower air compressor 1 can be quickly buckled on the upper air compressor 1.

[0052] The housing 22 includes a top wall 220, a bottom wall 221, a left side wall 222, a right side wall 223, a front side wall 224, and a rear side wall 225. The top wall 220 and the bottom wall 221 are located on the upper and lower sides of the machine head 2 respectively. The left side wall 222 and the right side wall 223 are located on the left and right sides of the machine head 2 respectively. The front side wall 224 and the rear side wall 225 are located on the front and rear sides of the machine head 2 respectively. The air compression pump 20 is located in the receiving space jointly surrounded by the top wall 220, the bottom wall 221, the left side wall 222, the right side wall 223, the front side wall 224, and the rear side wall 225, and at least one air storage tank is exposed on the lower side of the bottom wall 221; when two air compressors 1 are stacked on top of each other, the upper air compressor 1 is supported on the top wall 220 of the lower air compressor 1; at least one receiving groove is recessed in the top wall 220; when the buckle is in the storage angle position, the buckle lies in the corresponding receiving groove. The top wall 220, the bottom wall 221, the left side wall 222, the right side wall 223, the front side wall 224, and the rear side wall 225 jointly form a rectangular box body, and the air compression pump 20 is located in the box body jointly formed by the top wall 220, the bottom wall 221, the left side wall 222, the right side wall 223, the front side wall 224, and the rear side wall 225.

[0053] The air compressor 1 further includes a first limiting protrusion 556 and a second limiting protrusion 566. The first limiting protrusion 556 and the second limiting protrusion 566 are located at the bottom of the air compressor 1. The first buckle 30 can be correspondingly received in the first receiving groove 2200, and the second buckle 31 can be correspondingly received in the second receiving groove 2201. When two air compressors 1 are stacked on top of each other, the first limiting protrusion 556 of the upper air compressor 1 is embedded downwards into the first receiving groove 2200 of the lower air compressor 1 and is limited in the first receiving groove 2200 of the lower air compressor 1, and the second limiting protrusion 566 of the upper air compressor 1 is embedded downwards into the second receiving groove 2201 of the lower air compressor 1 and is limited in the second receiving groove 2201 of the lower air compressor 1. With such a design, the functions of the first receiving groove 2200 and the second receiving groove 2201 are enhanced. In addition to the function of receiving the corresponding buckle, they also have a limiting function, which is beneficial to improving the stability of the two air compressors 1 stacked vertically.

[0054] When two air compressors 1 are stacked on top of each other, the wall surface of the first receiving groove 2200 of the lower air compressor 1 surrounds and is close to the first limiting protrusion 556 of the upper air compressor 1, and the wall surface of the second receiving groove 2201 of the lower air compressor 1 surrounds and is close to the second limiting protrusion 566 of the upper air compressor 1, so as to play a role in limiting the first limiting protrusion 556 and the second limiting protrusion 566; when two air compressors 1 are stacked on top of each other, the forward and backward movement and the rightward movement of the first limiting protrusion 556 of the upper air compressor 1 are restricted by the blocking of the wall surface of the first receiving groove 2200 of the lower air compressor 1, and the forward and backward movement and the leftward movement of the second limiting protrusion 566 of the upper air compressor 1 are restricted by the blocking of the wall surface of the second receiving groove 2201 of the lower air compressor 1; in this embodiment, the first limiting protrusion 556 protrudes downward and forms an annular opening facing downward, and the second limiting protrusion 566 protrudes downward and forms an annular opening facing downward.

[0055] The at least one receiving groove is recessed from the upper side of the housing 22. The at least one receiving groove includes a first receiving groove 2200 and a second receiving groove 2201. The first buckle 30 has a first stopping surface 301. After the first buckle 30 rotates along a first opening direction to an opening angle position, the first stopping surface 301 of the first buckle 30 supports on the bottom surface 2202 of the corresponding first receiving groove 2200, so that the first buckle 30 cannot continue to rotate along the first opening direction, and thus the first buckle 30 is stopped at the opening angle position. Based on this, the first buckle 30 can be maintained at the opening angle position; the second buckle 31 has a second stopping surface 311. After the second buckle 31 rotates along a second opening direction to an opening angle position, the second stopping surface 311 of the second buckle 31 supports on the bottom surface 2203 of the corresponding second receiving groove 2201, so that the second buckle 31 cannot continue to rotate along the second opening direction, and thus the second buckle 31 is stopped at the opening angle position. Based on this, the second buckle 31 can be maintained at the opening angle position. The bottom surface 2202 of the first receiving groove 2200 and the bottom surface 2203 of the second receiving groove 2201 are horizontal surfaces. The first opening direction is the rotation direction in which the first buckle 30 gradually turns from the storage angle position to the opening angle position, and the second opening direction is the rotation direction in which the second buckle 31 gradually turns from the storage angle position to the opening angle position.

[0056] The air compressor 1 further includes a plurality of support feet located at the bottom of the air compressor 1. When the air compressor 1 is placed on the ground, it is supported on the ground by the plurality of support feet. The outer shell 22 further includes a plurality of corner portions located at the top edge of the outer shell 22. When two air compressors 1 are stacked on top of each other, the positions of the support feet of the upper air compressor 1 correspond to the positions of the corner portions of the lower air compressor 1 one by one; when two air compressors 1 are stacked on top of each other, the support feet of the upper air compressor 1 are paired with the corner portions of the lower air compressor 1 one by one; when two air compressors 1 are stacked on top of each other, the support feet of the upper air compressor 1 are adapted to the corner portions of the lower air compressor 1 one by one; when two air compressors 1 are stacked on top of each other, the support feet of the upper air compressor 1 are nested with the corner portions of the lower air compressor 1 one by one. With such a design, it is beneficial for the upper air compressor 1 and the lower air compressor 1 to be stacked on top of each other more harmoniously, and it is beneficial for the stability of the two air compressors 1 stacked together.

[0057] The plurality of support feet include a first support foot 50, a second support foot 51, a third support foot 52, and a fourth support foot 53. The plurality of corner portions include a first corner portion 2260, a second corner portion 2261, a third corner portion 2262, and a fourth corner portion 2263. The first corner portion 2260 and the second corner portion 2261 are located at the front and rear ends of the left side edge of the top of the outer shell 22. The third corner portion 2262 and the fourth corner portion 2263 are located at the front and rear ends of the right side edge of the top of the outer shell 22. When two air compressors 1 are stacked on top of each other, the first support foot 50 of the upper air compressor 1 is adapted to the first corner portion 2260 of the lower air compressor 1, the second support foot 51 of the upper air compressor 1 is adapted to the second corner portion 2261 of the lower air compressor 1, the third support foot 52 of the upper air compressor 1 is adapted to the third corner portion 2262 of the lower air compressor 1, and the fourth support foot 53 of the upper air compressor 1 is adapted to the fourth corner portion 2263 of the lower air compressor 1. When two air compressors 1 are stacked on top of each other, the first support foot 50 of the upper air compressor 1 is nested with the first corner portion 2260 of the lower air compressor 1, the second support foot 51 of the upper air compressor 1 is nested with the second corner portion 2261 of the lower air compressor 1, the third support foot 52 of the upper air compressor 1 is nested with the third corner portion 2262 of the lower air compressor 1, and the fourth support foot 53 of the upper air compressor 1 is nested with the fourth corner portion 2263 of the lower air compressor 1.

[0058] In this embodiment, the top wall 220 is detachable and is locked by a number of screws. The top wall 220 forms the upper cover of the machine head 2. The number of corner portions are provided on the top wall 220 and are part of the top wall 220. When two air compressors 1 are stacked vertically, the upper air compressor 1 is supported on the top wall 220 of the lower air compressor 1. The first corner portion 2260, the second corner portion 2261, the third corner portion 2262, and the fourth corner portion 2263 are located at the four corners of the top wall 220. At least one buckle is rotatably connected to the top wall 220.

[0059] The air compressor 1 further includes a first rotating shaft 32 corresponding to the first buckle 30 and a second rotating shaft 33 corresponding to the second buckle 31. The first buckle 30 is rotatably connected to the machine head 2 through the first rotating shaft 32, and the second buckle 31 is rotatably connected to the machine head 2 through the second rotating shaft 33. Further, the first buckle 30 is rotatably connected to the outer shell 22 of the machine head 2 through the first rotating shaft 32, and the second buckle 31 is rotatably connected to the outer shell 22 of the machine head 2 through the second rotating shaft 33. Further, the first buckle 30 is rotatably connected to the top wall 220 of the outer shell 22 of the machine head 2 through the first rotating shaft 32, and the second buckle 31 is rotatably connected to the top wall 220 of the outer shell 22 of the machine head 2 through the second rotating shaft 33.

[0060] When two air compressors 1 are stacked vertically, the number of support feet of the upper air compressor 1 do not contact the lower air compressor 1. The number of support feet are likely to get dirty with dirt on the ground and are usually dirtier. Based on this design, after the two air compressors 1 are stacked vertically, the number of support feet of the upper air compressor 1 are not likely to dirty the lower air compressor 1.

[0061] The air compressor 1 further includes at least one support base. When two air compressors 1 are stacked vertically, the at least one support base of the upper air compressor 1 supports on the lower air compressor 1. When the air compressor 1 is placed on the ground, the number of support feet support on the ground and the at least one support base is suspended relative to the ground. The ground is based on the horizontal plane, and the ground should be normally understood as being horizontal. Thus, the at least one support base is not likely to get dirty with dirt, particulate matter, etc. on the ground. Therefore, after the two air compressors 1 are stacked vertically, the at least one support base of the upper air compressor 1 is not likely to dirty the lower air compressor 1, nor is it likely to affect the stacking support stability due to particulate matter adhering to the at least one support base of the upper air compressor 1.

[0062] The at least one support base includes a first support base 55 and a second support base 56. The first support base 55 and the second support base 56 are respectively located at the lower part of the air compressor 1 below. The first air storage tank 110 and the second air storage tank 111 are arranged horizontally side by side. The first air storage tank 110 and the second air storage tank 111 are located at the lower side of the machine head 2 and are in a lying state. The first air storage tank 110 and the second air storage tank 111 are spaced apart in a first direction. The first support base 55 and the second support base 56 are spaced apart in a second direction. The first direction is perpendicular to the second direction. The first support base 55 and the second support base 56 are respectively at least partially located below the first air storage tank 110 and at least partially located below the second air storage tank 111. When two air compressors 1 are stacked on top of each other, the first support base 55 of the upper air compressor 1 and the second support base 56 of the upper air compressor 1 respectively support on the top of the lower air compressor 1.

[0063] When two air compressors 1 are stacked on top of each other, the first support base 55 of the upper air compressor 1 and the second support base 56 of the upper air compressor 1 respectively support on the top wall 220 of the machine head 2 of the lower air compressor 1. A first support bracket 130 and a second support bracket 131 are welded to the bottom of the first air storage tank 110. A third support bracket 132 and a fourth support bracket 133 are welded to the bottom of the second air storage tank 111. The first support base 55 is locked to the first support bracket 130 and the third support bracket 132 on the first air storage tank 110 to be fixedly connected to the first air storage tank 110 and the second air storage tank 111. The second support base 56 is locked to the second support bracket 131 and the fourth support bracket 133 on the second air storage tank 111 to be fixedly connected to the first air storage tank 110 and the second air storage tank 111. The first support base 55 is locked to the first support bracket 130 and the third support bracket 132 through locking elements (such as screws). The second support base 56 is locked to the second support bracket 131 and the fourth support bracket 133 through locking elements (such as screws).

[0064] A plurality of connecting brackets 14 are welded to the top of the first air storage tank 110 and the top of the second air storage tank 111. The machine head 2 is locked to the plurality of connecting brackets 14 to be fixed on the upper sides of both the first air storage tank 110 and the second air storage tank 111. The machine head 2 is locked to the plurality of connecting brackets 14 through locking elements (such as screws). A fifth support bracket 150 and a sixth support bracket 151 are welded to the bottom of the first air storage tank 110. A seventh support bracket 152 and an eighth support bracket 153 are welded to the bottom of the second air storage tank 111. The first support foot 50 is locked to the fifth support bracket 150 through locking elements (such as screws). The second support foot 51 is locked to the seventh support bracket 152 through locking elements (such as screws). The third support foot 52 is locked to the sixth support bracket 151 through locking elements (such as screws). The fourth support foot 53 is locked to the eighth support bracket 153 through locking elements (such as screws).

[0065] Looking up from the bottom of the air compressor 1, the first support base 55 and the second support base 56 are respectively arched; the first support base 55 includes a first support portion 550 and a second support portion 551, and the second support base 56 includes a third support portion 560 and a fourth support portion 561. The first support portion 550 and the third support portion 560 are located below the first air storage tank 110, and the second support portion 551 and the fourth support portion 561 are located below the second air storage tank 111. When two air compressors 1 are stacked on top of each other, the first support portion 550 of the upper air compressor 1, the second support portion 551 of the upper air compressor 1, the third support portion 560 of the upper air compressor 1, and the fourth support portion 561 of the upper air compressor 1 respectively support the lower air compressor 1. With such a design, it is beneficial to achieve balanced support during stacking through the first support portion 550, the second support portion 551, the third support portion 560, and the fourth support portion 561.

[0066] The first support portion 550 includes a first support bottom surface 5500, the second support portion 551 includes a second support bottom surface 5510, the third support portion 560 includes a third support bottom surface 5600, and the fourth support portion 561 includes a fourth support bottom surface 5610. When two air compressors 1 are stacked on top of each other, the first support bottom surface 5500 of the first support portion 550 of the upper air compressor 1, the second support bottom surface 5510 of the second support portion 551 of the upper air compressor 1, the third support bottom surface 5600 of the third support portion 560 of the upper air compressor 1, and the fourth support bottom surface 5610 of the fourth support portion 561 of the upper air compressor 1 respectively abut against and support the head 2 of the lower air compressor 1 downward. The first support bottom surface 5500, the second support bottom surface 5510, the third support bottom surface 5600, and the fourth support bottom surface 5610 are respectively in a horizontal state, and the first support bottom surface 5500, the second support bottom surface 5510, the third support bottom surface 5600, and the fourth support bottom surface 5610 are coplanar.

[0067] When two air compressors 1 are stacked on top of each other, the first support bottom surface 5500 of the first support portion 550 of the upper air compressor 1, the second support bottom surface 5510 of the second support portion 551 of the upper air compressor 1, the third support bottom surface 5600 of the third support portion 560 of the upper air compressor 1, and the fourth support bottom surface 5610 of the fourth support portion 561 of the upper air compressor 1 respectively support the top surface of the top wall 220 of the lower air compressor 1 downward.

[0068] The top of the machine head 2 has a plurality of support planes 23. The support planes 23 are in a horizontal state, the plurality of support planes 23 are coplanar, and the plurality of support planes 23 are dispersed. When two air compressors 1 are stacked vertically, the upper air compressor 1 is supported on the plurality of support planes 23 of the machine head 2 of the lower air compressor 1. Further, when two air compressors 1 are stacked vertically, at least one support seat of the upper air compressor 1 is supported on the plurality of support planes 23 of the machine head 2 of the lower air compressor 1. Further, when two air compressors 1 are stacked vertically, the first support bottom surface 5500 of the first support portion 550 of the upper air compressor 1, the second support bottom surface 5510 of the second support portion 551 of the upper air compressor 1, the third support bottom surface 5600 of the third support portion 560 of the upper air compressor 1, and the fourth support bottom surface 5610 of the fourth support portion 561 of the upper air compressor 1 respectively support downward on the plurality of support planes 23 of the machine head 2 of the lower air compressor 1. The plurality of support planes 23 form a part of the top surface of the top wall 220 of the outer shell 22 of the machine head 2.

[0069] The first support portion 550 and the second support portion 551 are located at opposite ends of the first support seat 55, and the third support portion 560 and the fourth support portion 561 are located at opposite ends of the second support seat 56. When the air compressor 1 is placed on the ground, it is supported on the ground by means of the plurality of support feet. The first support portion 550 is adjacent to the first support foot 50, the second support portion 551 is adjacent to the second support foot 51, the third support portion 560 is adjacent to the third support foot 52, and the fourth support portion 561 is adjacent to the fourth support foot 53. The first support portion 550 and the third support portion 560 are located between the first support foot 50 and the third support foot 52, and the second support portion 551 and the fourth support portion 561 are located between the second support foot 51 and the fourth support foot 53. The first support foot 50 and the third support foot 52 are respectively located below the first air storage tank 110 and are respectively fixedly connected to the first air storage tank 110. The second support foot 51 and the fourth support foot 53 are respectively located below the second air storage tank 111 and are respectively fixedly connected to the second air storage tank 111. With such a design, it is beneficial to improve the stability of the two air compressors 1 when stacked vertically. In this embodiment, the first support foot 50, the second support foot 51, the third support foot 52, and the fourth support foot 53 are elastic and can be made of rubber material.

[0070] The first support base 55 further includes a first connection portion 552 and a first snap-fit portion 553. The first connection portion 552 connects the first support portion 550 and the second support portion 551. The second support base 56 further includes a second connection portion 562 and a second snap-fit portion 563. The second connection portion 562 connects the third support portion 560 and the fourth support portion 561. The vertical projections of the first connection portion 552 and the second connection portion 562 are at least partially located between the vertical projection of the first air storage tank 110 and the vertical projection of the second air storage tank 111 respectively. The first snap-fit portion 553 is provided on the side of the first connection portion 552 away from the second connection portion 562, and the first snap-fit portion 553 is correspondingly located below the first buckle 30. The second snap-fit portion 563 is provided on the side of the second connection portion 562 away from the first connection portion 552, and the second snap-fit portion 563 is correspondingly located below the second buckle 31. When the two air compressors 1 are stacked on top of each other, the first buckle 30 of the lower air compressor 1 can be correspondingly snapped together with the first snap-fit portion 553 of the upper air compressor 1, and the second buckle 31 of the lower air compressor 1 can be correspondingly snapped together with the second snap-fit portion 563 of the upper air compressor 1. The first snap-fit portion 553 and the second snap-fit portion 563 can be snap-fit frames, grooves, snap-fit protrusions, etc.

[0071] When the two air compressors 1 are stacked on top of each other, the first snap-fit protrusion 300 of the first buckle 30 of the lower air compressor 1 can be correspondingly snapped together with the first snap-fit portion 553 of the upper air compressor 1, and the second snap-fit protrusion 310 of the second buckle 31 of the lower air compressor 1 can be correspondingly snapped together with the second snap-fit portion 563 of the upper air compressor 1. Thus, the first buckle 30 and the second buckle 31 of the lower air compressor 1 can be correspondingly buckled on the upper air compressor 1, and the upper air compressor 1 can be locked on the lower air compressor 1. The first limiting protrusion 556 is provided at the bottom of the first connection portion 552, and the second limiting protrusion 566 is provided at the bottom of the second connection portion 562.

[0072] The first air storage tank 110 and the second air storage tank 111 are arranged side by side in a lying state on the lower side of the machine head 2. The first air storage tank 110 and the second air storage tank 111 are arranged at intervals one in front of the other. The vertical projections of the first snap-fit portion 553, the second snap-fit portion 563, the first buckle 30, and the second buckle 31 are at least partially located between the vertical projection of the first air storage tank 110 and the vertical projection of the second air storage tank 111 respectively. Such a design is beneficial to the balance of the air compressor 1 structure and beneficial to the stability of the snap-fit of the buckles on the left and right sides when stacked up and down.

[0073] The first buckle 30 and the second buckle 31 are located on the left and right sides of the machine head 2 of the air compressor 1. The first air storage tank 110 and the second air storage tank 111 are spaced apart front and back. The first support seat 55 and the second support seat 56 are spaced apart left and right. When two air compressors 1 are stacked on top of each other, the first buckle 30 of the lower air compressor 1 can be buckled on the first support seat 55 of the upper air compressor 1 and is located on the left side of the first support seat 55 of the upper air compressor 1, and the second buckle 31 of the lower air compressor 1 can be buckled on the second support seat 56 of the upper air compressor 1 and is located on the right side of the second support seat 56 of the upper air compressor 1. This is beneficial to achieving balanced buckling and support when two air compressors 1 are stacked on top of each other.

[0074] Both the first support seat 55 and the second support seat 56 include a number of positioning protrusions that protrude downward; the machine head 2 of the air compressor 1 further includes at least one positioning groove. When two air compressors 1 are stacked on top of each other, the positioning protrusions of the upper air compressor 1 correspondingly protrude downward and are inserted into the positioning grooves of the lower air compressor 1. With such a design, the positioning between the two air compressors 1 stacked on top of each other is promoted.

[0075] When two air compressors 1 are stacked on top of each other, the upper air compressor 1 is supported on the top wall 220 of the lower air compressor 1; the number of positioning protrusions includes a first positioning protrusion 554 protruding downward from the first support portion 550, a second positioning protrusion 555 protruding downward from the second support portion 551, a third positioning protrusion 564 protruding downward from the third support portion 560, and a fourth positioning protrusion 565 protruding downward from the fourth support portion 561; the at least one positioning groove is respectively recessed in the top wall 220, and the at least one positioning groove includes a first positioning groove 2270, a second positioning groove 2271, a third positioning groove 2272, and a fourth positioning groove 2273. When two air compressors 1 are stacked on top of each other, the first positioning protrusion 554 of the upper air compressor 1 correspondingly protrudes downward and is inserted into the first positioning groove 2270 of the lower air compressor 1, the second positioning protrusion 555 of the upper air compressor 1 correspondingly protrudes downward and is inserted into the second positioning groove 2271 of the lower air compressor 1, the third positioning protrusion 564 of the upper air compressor 1 correspondingly protrudes downward and is inserted into the third positioning groove 2272 of the lower air compressor 1, and the fourth positioning protrusion 565 of the upper air compressor 1 correspondingly protrudes downward and is inserted into the fourth positioning groove 2273 of the lower air compressor 1. With such a design, it is beneficial to perform balanced support positioning between the two air compressors 1 stacked on top of each other.

[0076] The head 2 of the air compressor 1 further includes a handle 24 and a top wall 220. The handle 24 is fixedly connected to the top wall 220. The handle 24 is located at the top of the head 2 and is exposed to the outside of the head 2. The handle 24 does not extend upward beyond the top surface of the top wall 220. The handle 24 is located in the central area at the top of the head 2. When two air compressors 1 are stacked vertically, the upper air compressor 1 is supported on the top wall 220 of the lower air compressor 1 and the handle 24 of the lower air compressor 1 does not contact the upper air compressor 1. The handle 24 located in the central area at the top of the head 2 does not participate in the support, which helps to avoid forming a support in the central area at the top of the head 2 and improves the overall stability of the support.

[0077] When two air compressors 1 need to be stacked vertically, first turn the fasteners of the air compressor 1 to be placed below to the open angle position; place the other air compressor 1 on the air compressor 1 below so that the first limiting protrusion 556 and the second limiting protrusion 566 of the upper air compressor 1 are correspondingly embedded in the first receiving groove 2200 and the second receiving groove 2201 of the lower air compressor 1 and each positioning protrusion of the upper air compressor 1 is correspondingly embedded in each positioning groove of the lower air compressor 1; then rotate each fastener (the first fastener 30, the second fastener 31) of the lower air compressor 1 to the locking angle position to be buckled to the upper air compressor 1, so that the first fastener 30 and the second fastener 31 of the lower air compressor 1 can be correspondingly buckled with the first buckle engaging portion 553 and the second buckle engaging portion 563 of the upper air compressor 1; when the upper air compressor 1 needs to be put down, first turn each fastener (the first fastener 30, the second fastener 31) to the open angle position, and the upper air compressor 1 can be removed from the lower air compressor 1.

Claims

1. An air compressor, characterized in that: The air compressor includes at least one air storage tank, a machine head, a first air delivery pipeline, and a second air delivery pipeline. The machine head includes an air compression pump and at least one air delivery quick connector. The first air delivery pipeline is used for fluid connection between the at least one air storage tank and the air compression pump. The air compressed by the air compression pump is delivered to the at least one air storage tank via the first air delivery pipeline. The second air delivery pipeline is used for fluid connection between the at least one air storage tank and the at least one air delivery quick connector. Two such air compressors can be stacked vertically. When two air compressors are stacked vertically, the upper air compressor is supported on the machine head of the lower air compressor.

2. The air compressor according to claim 1, characterized in that: It further includes at least one buckle. The at least one buckle is exposed outside the machine head. The at least one buckle is rotatably connected to the machine head. When two air compressors are stacked vertically, the at least one buckle of the lower air compressor can be buckled on the upper air compressor, thus locking the upper air compressor on the machine head of the lower air compressor.

3. The air compressor according to claim 2, wherein: The machine head further includes a housing. The air compression pump is located inside the housing. The at least one air storage tank is located below the housing. The at least one buckle is rotatably connected to the housing. When two air compressors are stacked vertically, the upper air compressor is supported on the housing of the machine head of the lower air compressor.

4. The air compressor according to claim 3, characterized in that: The at least one buckle includes a first buckle and a second buckle. The first buckle and the second buckle are located on the left and right sides of the machine head of the air compressor. The at least one air storage tank includes a first air storage tank and a second air storage tank. The first air storage tank and the second air storage tank are arranged side by side in a horizontal position under the machine head, and are spaced apart from each other front and back. The vertical projection of the first buckle and the vertical projection of the second buckle are respectively at least partially located between the vertical projection of the first air storage tank and the vertical projection of the second air storage tank. And / or, the housing includes at least one receiving groove. The buckle has a storage angular position, an opening angular position, and a locking angular position between the storage angular position and the opening angular position. The buckle is limited to rotate between the storage angular position and the opening angular position. When two air compressors are stacked vertically and the buckle of the lower air compressor is in the locking angular position, the buckle of the lower air compressor is buckled on the upper air compressor; the buckle passes through the locking angular position during the process of turning from the storage angular position to the opening angular position; when the buckle is in the storage angular position, the buckle is received in the corresponding receiving groove; when the buckle is in the opening angular position, the buckle is in an open state.

5. The air compressor according to claim 3, wherein: The at least one buckle includes a first buckle and a second buckle. The first buckle and the second buckle are located on the left and right sides of the machine head of the air compressor. The at least one air storage tank includes a first air storage tank and a second air storage tank. The first air storage tank and the second air storage tank are spaced apart from each other front and back. The housing further includes a first fitting portion and a second fitting portion. The first fitting portion and the second fitting portion are located at opposite ends of the bottom of the housing. The first fitting portion and the second fitting portion are at least partially embedded between the first air storage tank and the second air storage tank. The first fitting portion and the first buckle are correspondingly located on the upper and lower sides of the machine head. The second fitting portion and the second buckle are correspondingly located on the upper and lower sides of the machine head. The first fitting portion includes a first arc surface and a second arc surface. The first arc surface is close to the first air storage tank and matches the contour of the first air storage tank. The second arc surface is close to the second air storage tank and matches the contour of the second air storage tank. The second fitting portion includes a third arc surface and a fourth arc surface. The third arc surface is close to the first air storage tank and matches the contour of the first air storage tank. The fourth arc surface is close to the second air storage tank and matches the contour of the second air storage tank.

6. The air compressor according to claim 3, wherein: The housing includes at least one receiving groove. The buckle has a storage angular position, an opening angular position, and a locking angular position between the storage angular position and the opening angular position. The buckle is limited to rotate between the storage angular position and the opening angular position. When two air compressors are stacked vertically and the buckle of the lower air compressor is in the locking angular position, the buckle of the lower air compressor buckles on the upper air compressor. The buckle passes through the locking angular position during the process of rotating from the storage angular position to the opening angular position. When the buckle is in the storage angular position, the buckle is received in the corresponding receiving groove. When the buckle is in the opening angular position, the buckle is in an open state.

7. The air compressor according to claim 6, characterized in that: The at least one buckle includes a first buckle and a second buckle. The first buckle includes a first buckle protrusion. The second buckle includes a second buckle protrusion. The at least one receiving groove is recessed from the upper side of the housing. The at least one receiving groove includes a first receiving groove and a second receiving groove. When the first buckle is in the storage angular position, the first buckle protrusion is located in the first receiving groove and abuts against the bottom surface of the first receiving groove. When the second buckle is in the storage angular position, the second buckle protrusion is located in the second receiving groove and abuts against the bottom surface of the second receiving groove. After rotating the buckle from the storage angular position to the locking angular position and releasing the buckle, the buckle will fall back to the storage angular position under the action of its own gravity. And / or, after rotating the buckle to the opening angular position and releasing the buckle, the buckle will remain in the opening angular position. When the buckle is in the opening angular position, the buckle is in an outwardly turned and inclined upright state. And / or, the housing includes a top wall, a bottom wall, a left side wall, a right side wall, a front side wall, and a rear side wall. The top wall and the bottom wall are located on the upper and lower sides of the machine head respectively. The left side wall and the right side wall are located on the left and right sides of the machine head respectively. The front side wall and the rear side wall are located on the front and rear sides of the machine head respectively. The air compression pump is located in the accommodation space jointly formed by the top wall, the bottom wall, the left side wall, the right side wall, the front side wall, and the rear side wall. The top wall, the bottom wall, the left side wall, the right side wall, the front side wall, and the rear side wall jointly form a rectangular box body. At least one air storage tank is exposed on the lower side of the bottom wall. When two air compressors are stacked on top of each other, the upper air compressor is supported on the top wall of the lower air compressor. At least one accommodation groove is recessed in the top wall. When the buckle is in the storage angular position, the buckle lies in the corresponding accommodation groove. And / or, the air compressor further includes a first limiting protrusion and a second limiting protrusion, which are located at the bottom of the air compressor. At least one buckle includes a first buckle and a second buckle. At least one accommodation groove includes a first accommodation groove and a second accommodation groove. The first buckle can be correspondingly received in the first accommodation groove, and the second buckle can be correspondingly received in the second accommodation groove. When two air compressors are stacked on top of each other, the first limiting protrusion of the upper air compressor is downwardly inserted into and limited in the first accommodation groove of the lower air compressor, and the second limiting protrusion of the upper air compressor is downwardly inserted into and limited in the second accommodation groove of the lower air compressor. And / or, at least one accommodation groove is recessed from the upper side of the housing. At least one accommodation groove includes a first accommodation groove and a second accommodation groove. At least one buckle includes a first buckle and a second buckle. The first buckle has a first stop surface. After the first buckle rotates along a first opening direction to the opening angular position, the first stop surface of the first buckle supports on the bottom surface of the corresponding first accommodation groove, so that the first buckle cannot continue to rotate along the first opening direction, and thus the first buckle is stopped at the opening angular position. The second buckle has a second stop surface. After the second buckle rotates along a second opening direction to the opening angular position, the second stop surface of the second buckle supports on the bottom surface of the corresponding second accommodation groove, so that the second buckle cannot continue to rotate along the second opening direction, and thus the second buckle is stopped at the opening angular position.

8. The air compressor according to claim 3, wherein: It further includes a plurality of support feet, which are located at the bottom of the air compressor. When the air compressor is placed on the ground, it is supported on the ground by the plurality of support feet. The housing further includes a plurality of corner portions, which are located at the top edge of the housing. When two air compressors are stacked on top of each other, the positions of the support feet of the upper air compressor correspond to the positions of the corner portions of the lower air compressor one by one.

9. The air compressor according to claim 8, characterized in that: The plurality of support feet include a first support foot, a second support foot, a third support foot, and a fourth support foot. The plurality of corner portions include a first corner portion, a second corner portion, a third corner portion, and a fourth corner portion. The first corner portion and the second corner portion are located at the front and rear ends of the left side edge of the top of the housing. The third corner portion and the fourth corner portion are located at the front and rear ends of the right side edge of the top of the housing. When two of the air compressors are stacked on top of each other, the first support foot of the upper air compressor is nested with the first corner portion of the lower air compressor, the second support foot of the upper air compressor is nested with the second corner portion of the lower air compressor, the third support foot of the upper air compressor is nested with the third corner portion of the lower air compressor, and the fourth support foot of the upper air compressor is nested with the fourth corner portion of the lower air compressor; And / or, the housing further includes a top wall, the top wall is detachable, the top wall forms the upper cover of the machine head, the plurality of corner portions are provided on the top wall and are part of the top wall. When two of the air compressors are stacked on top of each other, the upper air compressor is supported on the top wall of the lower air compressor; the plurality of corner portions are located at the four corners of the top wall; when two of the air compressors are stacked on top of each other, each of the support feet of the upper air compressor is correspondingly adapted to each of the corner portions of the lower air compressor.

10. The air compressor according to claim 1, wherein: It further includes a plurality of support feet and at least one support seat. When two of the air compressors are stacked on top of each other, the plurality of support feet of the upper air compressor do not contact the lower air compressor; when two of the air compressors are stacked on top of each other, the at least one support seat of the upper air compressor supports on the lower air compressor; when the air compressor is placed on the ground, the plurality of support feet support on the ground and the at least one support seat is suspended relative to the ground.

11. The air compressor according to claim 1, characterized in that: It further includes at least one support seat. The at least one support seat includes a first support seat and a second support seat. The at least one air storage tank includes a first air storage tank and a second air storage tank. The first air storage tank and the second air storage tank are arranged in parallel. The first air storage tank and the second air storage tank are located below the machine head and are in a lying state. The first air storage tank and the second air storage tank are spaced apart in a first direction. The first support seat and the second support seat are spaced apart in a second direction, and the first direction is perpendicular to the second direction; the first support seat and the second support seat are respectively at least partially located below the first air storage tank and respectively at least partially located below the second air storage tank. When two of the air compressors are stacked on top of each other, the first support seat of the upper air compressor and the second support seat of the upper air compressor respectively support on the top of the lower air compressor.

12. The air compressor according to claim 11, wherein: It further includes at least one buckle, and the at least one buckle includes a first buckle and a second buckle. The first buckle and the second buckle are located on the left and right sides of the air compressor head. The first air storage tank and the second air storage tank are spaced apart front and back. The first support seat and the second support seat are spaced apart left and right. When the two air compressors are stacked on top of each other, the first buckle of the lower air compressor can be buckled on the first support seat of the upper air compressor and is located on the left side of the first support seat of the upper air compressor, and the second buckle of the lower air compressor can be buckled on the second support seat of the upper air compressor and is located on the right side of the second support seat of the upper air compressor; And / or, both the first support seat and the second support seat include a plurality of positioning protrusions, and the positioning protrusions protrude downward; the air compressor head further includes at least one positioning groove. When the two air compressors are stacked on top of each other, the respective positioning protrusions of the upper air compressor are correspondingly embedded downward into the respective positioning grooves of the lower air compressor; the air compressor head further includes a top wall. When the two air compressors are stacked on top of each other, the upper air compressor is supported on the top wall of the lower air compressor; the plurality of positioning protrusions include a first positioning protrusion protruding downward from the first support portion, a second positioning protrusion protruding downward from the second support portion, a third positioning protrusion protruding downward from the third support portion, and a fourth positioning protrusion protruding downward from the fourth support portion; the at least one positioning groove is respectively recessed in the top wall, and the at least one positioning groove includes a first positioning groove, a second positioning groove, a third positioning groove, and a fourth positioning groove. When the two air compressors are stacked on top of each other, the first positioning protrusion of the upper air compressor is correspondingly embedded downward into the first positioning groove of the lower air compressor, the second positioning protrusion of the upper air compressor is correspondingly embedded downward into the second positioning groove of the lower air compressor, the third positioning protrusion of the upper air compressor is correspondingly embedded downward into the third positioning groove of the lower air compressor, and the fourth positioning protrusion of the upper air compressor is correspondingly embedded downward into the fourth positioning groove of the lower air compressor; And / or, when viewed from the bottom of the air compressor upwards, the first support seat is arched and protrudes in a direction away from the second support seat; when viewed from the bottom of the air compressor upwards, the second support seat is arched and protrudes in a direction away from the first support seat; the first support seat includes a first support portion and a second support portion, the second support seat includes a third support portion and a fourth support portion, the first support portion and the third support portion are located below the first air storage tank, and the second support portion and the fourth support portion are located below the second air storage tank. When the two air compressors are stacked on top of each other, the first support portion of the upper air compressor, the second support portion of the upper air compressor, the third support portion of the upper air compressor, and the fourth support portion of the upper air compressor respectively support on the lower air compressor.

13. The air compressor according to claim 11, wherein: The first support base includes a first support portion and a second support portion, and the second support base includes a third support portion and a fourth support portion. The first support portion and the third support portion are located below the first gas storage tank, and the second support portion and the fourth support portion are located below the second gas storage tank. The first support portion includes a first support bottom surface, the second support portion includes a second support bottom surface, the third support portion includes a third support bottom surface, and the fourth support portion includes a fourth support bottom surface. When the two air compressors are stacked on top of each other, the first support bottom surface of the first support portion of the upper air compressor, the second support bottom surface of the second support portion of the upper air compressor, the third support bottom surface of the third support portion of the upper air compressor, and the fourth support bottom surface of the fourth support portion of the upper air compressor respectively abut and support downwardly on the head of the lower air compressor. The first support portion and the second support portion are located at opposite ends of the first support base, and the third support portion and the fourth support portion are located at opposite ends of the second support base. The air compressor further includes a plurality of support feet. When the air compressor is placed on the ground, it is supported on the ground by means of the plurality of support feet. The plurality of support feet includes a first support foot, a second support foot, a third support foot, and a fourth support foot. The first support portion is adjacent to the first support foot, the second support portion is adjacent to the second support foot, the third support portion is adjacent to the third support foot, and the fourth support portion is adjacent to the fourth support foot. The first support portion and the third support portion are located between the first support foot and the third support foot, and the second support portion and the fourth support portion are located between the second support foot and the fourth support foot. The first support foot and the third support foot are respectively located below the first gas storage tank and are respectively fixedly connected to the first gas storage tank. The second support foot and the fourth support foot are respectively located below the second gas storage tank and are respectively fixedly connected to the second gas storage tank.

14. The air compressor according to claim 11, characterized in that: The first support base includes a first support portion and a second support portion, and the second support base includes a third support portion and a fourth support portion. The first support portion and the third support portion are located below the first gas storage tank, and the second support portion and the fourth support portion are located below the second gas storage tank. The air compressor further includes at least one buckle. The first support base further includes a first connection part and a first buckle engaging part. The first connection part connects the first support part and the second support part. The second support base further includes a second connection part and a second buckle engaging part. The second connection part connects the third support part and the fourth support part. The at least one buckle includes a first buckle and a second buckle. The first buckle engaging part is disposed on a side of the first connection part away from the second connection part, and the first buckle engaging part is correspondingly located below the first buckle. The second buckle engaging part is disposed on a side of the second connection part away from the first connection part, and the second buckle engaging part is correspondingly located below the second buckle. When two of the air compressors are stacked on top of each other, the first buckle of the lower air compressor can be correspondingly buckled with the first buckle engaging part of the upper air compressor and the second buckle of the lower air compressor can be correspondingly buckled with the second buckle engaging part of the upper air compressor. The first air storage tank and the second air storage tank are arranged side by side and horizontally disposed on the lower side of the machine head. The first air storage tank and the second air storage tank are spaced apart from each other front to back. The vertical projections of the first buckle engaging part, the vertical projection of the second buckle engaging part, the vertical projection of the first buckle, and the vertical projection of the second buckle are respectively at least partially located between the vertical projection of the first air storage tank and the vertical projection of the second air storage tank.

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