Intelligent air compressor based on direct-current frequency conversion technology

Abstract

The intelligent air compressor based on the direct current frequency conversion technology comprises a main shell, an auxiliary shell, a motor assembly, an air cylinder assembly, a fixing rod and a cylinder cover, the motor assembly comprises a stator, a rotor and a rotating shaft, the stator is clamped between the main shell and the auxiliary shell through the fixing rod, and the stator is rotationally connected with the rotating shaft through the rotor; the permanent magnet frequency conversion direct current technology is adopted, and the double-air-cylinder assembly is arranged, so that the output power of the permanent magnet frequency conversion direct current motor is high; the space occupied by the motor assembly is small, the structure is more compact, the stator is clamped between the main shell and the auxiliary shell through the fixing rod, the stator is prevented from rotating relative to the shell, meanwhile, the fixing rod can play a role in heat dissipation, the temperature of the motor assembly is effectively reduced, and the service life of the air compressor is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of air compressors, and in particular to an intelligent air compressor based on DC inverter technology. Background Technology

[0002] An air compressor is a device that converts mechanical energy into gas pressure energy using a piston-type structure. It provides pressure energy for pneumatic tools, pneumatic valves, and pneumatic instruments. The output power of the motor inside the air compressor directly affects the air compression efficiency, which makes traditional high-power air compressors relatively large. With the popularization of DC inverter technology, thanks to the high output power, small size, and light weight of DC inverter motors, the size of air compressors can be reduced. However, directly replacing the traditional motor with a DC inverter motor presents the problem of heat dissipation difficulties, which affects the service life of the air compressor. Utility Model Content

[0003] To overcome the shortcomings of the prior art, the technical solution adopted by this utility model is: an intelligent air compressor based on DC frequency conversion technology, including a main housing, a secondary housing, a motor assembly, a cylinder assembly, a fixing rod, and a cylinder head. The main housing is provided with fixing rods distributed in a circular pattern, and the secondary housing is connected to the main housing through the fixing rods. The main housing and the secondary housing are respectively sealed and connected to the cylinder head, and the cylinder assembly is provided inside the cylinder head. The motor assembly includes a stator, a rotor, and a rotating shaft. The stator is clamped between the main housing and the secondary housing through the fixing rod. The stator is rotatably connected to the rotating shaft through the rotor, and both ends of the rotating shaft extend into the main housing and the secondary housing and are connected to the cylinder assembly.

[0004] By adopting the above technical solution, this utility model uses permanent magnet variable frequency DC technology and is equipped with a dual cylinder assembly to make its output power high. The space occupied by the motor assembly is small, making the structure more compact. The stator is clamped between the main housing and the auxiliary housing by a fixing rod to prevent the stator from rotating relative to the housing. At the same time, the fixing rod can play a heat dissipation role, effectively reducing the temperature of the motor assembly and increasing the service life of the air compressor.

[0005] The present invention is further configured such that the cylinder head includes a main cylinder head and a secondary cylinder head, the main housing and the secondary housing are respectively sealed and connected to the main cylinder head and the secondary cylinder head, a cylinder assembly is provided between the main housing / secondary housing and the main cylinder head / secondary cylinder head, the main cylinder head is provided with a first intake chamber and a first exhaust chamber, the secondary cylinder head is provided with a second intake chamber and a second exhaust chamber connected to the first exhaust chamber.

[0006] Furthermore, the main housing is provided with a first cylindrical portion, a first side cavity, a first reinforcing rib, and a first central ring, and the sub-housing is provided with a second cylindrical portion, a second side cavity, a second reinforcing rib, and a second central ring. The first central ring and the second central ring are coaxially distributed. The two ends of the rotating shaft are rotatably connected to the first central ring and the second central ring through bearings. The first reinforcing rib / second reinforcing rib are circumferentially distributed on the first central ring / second central ring, and the first reinforcing rib / second reinforcing rib is provided with mounting holes for installing the fixing rod.

[0007] Furthermore, the stator, the first cylindrical part, and the second cylindrical part are all provided with semi-circular grooves distributed in a circular pattern, and the fixing rod is engaged between the stator and the first cylindrical part / second cylindrical part through the semi-circular grooves.

[0008] Furthermore, the first cylindrical portion is provided with a snap-fit ​​portion, and the second cylindrical portion is provided with a snap-fit ​​groove corresponding to the snap-fit ​​portion.

[0009] Using the above technical solution, the end face of the fixing rod is threaded. During installation, after the main housing is snapped into the secondary housing through the snap-fit ​​part, the fixing rod passes through the mounting hole laterally through the main housing and stator to the secondary housing, and is locked with a nut. The overall structure is simple and easy to install.

[0010] The present invention is further configured such that cooling fans are provided at both ends of the rotating shaft, and fan covers are provided in the first side cavity / second side cavity.

[0011] By adopting the above technical solution, the fixing rod extends to the cooling fan, which further removes the heat from the motor assembly, thereby improving the service life of the motor assembly.

[0012] The present invention is further configured such that the cylinder assembly includes an eccentric wheel, a piston rod, a cylinder component, a cylinder plate, a one-way pressure plate, a shaped sealing ring, and a connecting pipe. One end of the piston rod is rotatably connected to a rotating shaft via the eccentric wheel, and the other end is slidably connected to the cylinder component. The bottom surface of the cylinder plate is sealed to the main housing / sub-housing via the cylinder component, and the top surface of the cylinder plate is sealed to the main cylinder head / sub-cylinder head via the shaped sealing ring. One-way pressure plates are connected to the cylinder plate at the first intake chamber, the first exhaust chamber, the second intake chamber, and the second exhaust chamber. The first exhaust chamber is connected to the second exhaust chamber via the connecting pipe.

[0013] Furthermore, the main housing / sub-housing is provided with an inner circular groove and an outer annular groove that are coaxially distributed. The outer annular groove is provided with studs that are circumferentially distributed. The cylinder component is sleeved in the inner circular groove. The main cylinder head / sub-cylinder head is threadedly connected to the main housing / sub-housing through studs.

[0014] Using the above technical solution, the rotating shaft drives the eccentric wheel to rotate, which in turn drives the piston rod to move up and down, converting curvilinear motion into linear motion. When the piston rod moves down, the one-way pressure plate opens the first / second intake chamber and closes the first / second exhaust chamber, allowing external gas to enter the cylinder through the first / second intake chamber. When the piston rod moves up, the one-way pressure plate closes the first / second intake chamber and opens the first / second exhaust chamber, allowing gas inside the cylinder to flow out from the first / second exhaust chamber, and compressed gas from the auxiliary cylinder head enters the main cylinder head, thus achieving a dual-cylinder turbocharging effect and increasing output efficiency.

[0015] The present invention is further configured such that an upper handle cover and a lower handle cover are connected between the main cylinder head and the auxiliary cylinder head, and the main cylinder head and the auxiliary cylinder head are provided with mounting surfaces for installing the upper handle cover at the junction of the connecting pipe, and the upper handle cover and the lower handle cover are located on the upper and lower sides of the junction pipe.

[0016] Using the above technical solution, the upper handle cover and the lower handle cover are combined to form a handle for hand use. The handle is located directly above the center of gravity of the air compressor, which helps to maintain its balance when moving the air compressor.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model adopts permanent magnet frequency conversion DC technology and is equipped with a dual cylinder assembly to make its output power high, and the space occupied by the motor assembly is small, making the structure more compact;

[0019] 2. The stator is clamped between the main housing and the auxiliary housing by a fixing rod, which prevents the stator from rotating relative to the housing. At the same time, the fixing rod can also play a role in heat dissipation, effectively reducing the temperature of the motor assembly and increasing the service life of the air compressor.

[0020] The embodiments of this utility model will be further described below with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a cross-sectional view of the present invention when it is opened;

[0022] Figure 2 For the present utility model in Figure 1 A sectional view of the view along direction A in the middle;

[0023] Figure 3 This is a left view of the motor assembly of this utility model;

[0024] Figure 4 This is a right view of the main housing of this utility model;

[0025] Figure 5This is a left view of the secondary housing of this utility model;

[0026] Figure 6 For the present utility model Figure 1 A magnified view of the central B-direction view;

[0027] Figure 7 For the present utility model Figure 1 A magnified view of the C-direction view;

[0028] Wherein: 1-Main housing, 2-Sub-housing, 3-Motor assembly, 4-Cylinder assembly, 5-Fixing rod, 6-Main cylinder head, 7-Sub-cylinder head, 8-Fan shroud, 11-First cylindrical portion, 12-First side cavity, 13-First reinforcing rib, 14-First central ring, 15-Mounting hole, 16-Semi-circular groove, 17-Snap-fit ​​portion, 18-Inner circular groove, 19-Outer ring groove, 20-Stud, 21-Second cylindrical portion, 22-Second side cavity, 23-Second reinforcing rib. 24 - Second central ring, 27 - Slot, 31 - Stator, 32 - Rotor, 33 - Shaft, 34 - Cooling fan, 41 - Eccentric wheel, 42 - Piston rod, 43 - Cylinder component, 44 - Cylinder plate, 45 - One-way pressure plate, 46 - Irregular seal ring, 47 - Adaptor pipe, 61 - Handle top cover, 62 - Handle bottom cover, 63 - Mounting surface, 100 - First air inlet chamber, 101 - First air outlet chamber, 102 - Second air inlet chamber, 103 - Second air outlet chamber; Detailed Implementation

[0029] like Figure 1-3 As shown, this embodiment provides an intelligent air compressor based on DC inverter technology, including a main housing 1, a secondary housing 2, a motor assembly 3, a cylinder assembly 4, fixing rods 5, a main cylinder head 6, and a secondary cylinder head 7. The main housing 1 is provided with fixing rods 5 arranged in a circular pattern, and the main housing 1 is connected to the secondary housing 2 through the fixing rods 5. The main housing 1 and the secondary housing 2 are respectively sealed to the main cylinder head 6 and the secondary cylinder head 7. A cylinder assembly 4 is provided between the main housing 1 / secondary housing 2 and the main cylinder head 6 / secondary cylinder head 7. The cover 6 is provided with a first air intake chamber 100 and a first air outlet chamber 101. The auxiliary cylinder cover 7 is provided with a second air intake chamber 102 and a second air outlet chamber 103 connected to the first air outlet chamber 101. The motor assembly 3 includes a stator 31, a rotor 32 and a rotating shaft 33. The stator 31 is clamped between the main housing 1 and the auxiliary housing 2 by a fixing rod 5. The stator 31 is rotatably connected to the rotating shaft 33 through the rotor 32, and both ends of the rotating shaft 33 extend into the main housing 1 and the auxiliary housing 2 and are connected to the cylinder assembly 4.

[0030] Combination Figure 4 , 5As shown, in this embodiment, the main housing 1 is provided with a first cylindrical portion 11, a first side cavity 12, a first reinforcing rib 13, and a first central ring 14. The secondary housing 2 is provided with a second cylindrical portion 21, a second side cavity 22, a second reinforcing rib 23, and a second central ring 24. The first central ring 14 and the second central ring 24 are coaxially distributed. The two ends of the rotating shaft 33 are rotatably connected to the first central ring 14 and the second central ring 24 through bearings. The first reinforcing rib 13 / second reinforcing rib 23 are circumferentially distributed on the first central ring 14 / second central ring 24, and the first reinforcing rib 13 / second reinforcing rib 23 is circumferentially distributed on the first central ring 14 / second central ring 24. The reinforcing rib 13 / second reinforcing rib 23 is provided with mounting holes 15 for mounting the fixing rod 5. The stator 31, the first cylindrical part 11, and the second cylindrical part 21 are all provided with semi-circular grooves 16 distributed in a circular pattern. The fixing rod 5 is engaged between the stator 31 and the first cylindrical part 11 / second cylindrical part 21 through the semi-circular grooves 16. The first cylindrical part 11 is provided with a engaging part 17, and the second cylindrical part 21 is provided with a slot 27 corresponding to the engaging part 17. The two ends of the rotating shaft 33 are provided with cooling fans 34, and the first side cavity 12 / second side cavity 22 are provided with fan covers 8.

[0031] Combination Figure 2 , 6 As shown, in this embodiment, the cylinder assembly 4 includes an eccentric wheel 41, a piston rod 42, a cylinder component 43, a cylinder plate 44, a one-way pressure plate 45, a shaped sealing ring 46, and a connecting pipe 47. One end of the piston rod 42 is rotatably connected to the rotating shaft 33 via the eccentric wheel 41, and the other end is slidably connected to the cylinder component 43. The bottom surface of the cylinder plate 44 is sealed to the main housing 1 / sub-housing 2 via the cylinder component 43, and the top surface of the cylinder plate 44 is sealed to the main cylinder head 6 / sub-cylinder head 7 via the shaped sealing ring 46. The cylinder plate 44 is positioned... One-way pressure plates 45 are connected to the first air intake chamber 100, the first air outlet chamber 101, the second air intake chamber 102, and the second air outlet chamber 103. The first air outlet chamber 101 is connected to the second air outlet chamber 103 through the adapter pipe 47. The main housing 1 and the auxiliary housing 2 are provided with coaxially distributed inner circular grooves 18 and outer ring grooves 19. The outer ring groove 19 is provided with circumferentially distributed studs 20. The cylinder component 43 is sleeved in the inner circular groove 18. The main cylinder head 6 and the auxiliary cylinder head 7 are threadedly connected to the main housing 1 and the auxiliary housing 2 through the studs 20.

[0032] Combination Figure 7 As shown, in this embodiment, a handle upper cover 61 and a handle lower cover 62 are connected between the main cylinder head 6 and the auxiliary cylinder head 7. The main cylinder head 6 and the auxiliary cylinder head 7 are provided with a mounting surface 63 for installing the handle upper cover 61 at the adapter pipe 47. The handle upper cover 61 and the handle lower cover 62 are located on the upper and lower sides of the adapter pipe 47. The handle upper cover 61 and the handle lower cover 62 are combined to form a cylindrical groove, and the inner diameter of the cylindrical groove is larger than the outer diameter of the adapter pipe 47. The bottom surface of the handle lower cover 62 is an arc surface.

[0033] The working principle of this utility model is as follows: the rotating shaft 33 drives the eccentric wheel 41 to rotate, and the eccentric wheel 41 drives the piston rod 42 to move up and down, converting the curvilinear motion into linear motion. When the piston rod 42 moves down, the one-way pressure plate 45 causes the first intake chamber 100 / second intake chamber 102 to open and the first exhaust chamber 101 / second exhaust chamber 103 to close, allowing external gas to enter the cylinder 43 through the first intake chamber 100 / second intake chamber 102. When the piston rod 42 moves up, the one-way pressure plate 45 causes the first intake chamber 100 / second intake chamber 102 to close and the first exhaust chamber 101 / second exhaust chamber 103 to open, allowing gas in the cylinder 43 to flow out from the first exhaust chamber 101 / second exhaust chamber 103, and the compressed gas at the auxiliary cylinder head 7 enters the main cylinder head 6, thereby achieving the effect of dual-cylinder supercharging and increasing output efficiency.

[0034] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An intelligent air compressor based on direct current frequency conversion technology, comprising a main shell (1), a secondary shell (2), a motor assembly (3), a cylinder assembly (4), a fixed rod (5) and a cylinder cover, the main shell (1) is provided with the fixed rod (5) distributed in a circle, and the main shell (1) is connected with the secondary shell (2) through the fixed rod (5), the main shell (1) and the secondary shell (2) are sealingly connected with the cylinder cover, and the cylinder cover is provided with the cylinder assembly (4) therein, characterized in that, The motor assembly (3) comprises a stator (31), a rotor (32) and a rotating shaft (33), the stator (31) is clamped between the main shell (1) and the auxiliary shell (2) through the fixing rod (5), the rotating shaft (33) is rotatably connected to the stator (31) through the rotor (32), and both ends of the rotating shaft (33) extend into the main shell (1) and the auxiliary shell (2) and are connected to the cylinder assembly (4).

2. The intelligent air compressor based on direct current variable frequency technology according to claim 1, characterized in that: The cylinder cover comprises a main cylinder cover (6) and an auxiliary cylinder cover (7), the main shell (1) and the auxiliary shell (2) are respectively sealed and connected with the main cylinder cover (6) and the auxiliary cylinder cover (7), and the main shell (1) / the auxiliary shell (2) and the main cylinder cover (6) / the auxiliary cylinder cover (7) are provided with the cylinder assembly (4), the main cylinder cover (6) is provided with a first air inlet cavity (100) and a first air outlet cavity (101), the auxiliary cylinder cover (7) is provided with a second air inlet cavity (102) and a second air outlet cavity (103) connected with the first air outlet cavity (101).

3. The intelligent air compressor based on direct current variable frequency technology according to claim 2, characterized in that: The main shell (1) is provided with a first cylindrical part (11), a first side cavity (12), a first reinforcing rib (13) and a first central ring (14), the auxiliary shell (2) is provided with a second cylindrical part (21), a second side cavity (22), a second reinforcing rib (23) and a second central ring (24), the first central ring (14) and the second central ring (24) are coaxially distributed, both ends of the rotating shaft (33) are rotatably connected to the first central ring (14) and the second central ring (24) through bearings, the first reinforcing rib (13) / the second reinforcing rib (23) is circumferentially distributed on the first central ring (14) / the second central ring (24), and the first reinforcing rib (13) / the second reinforcing rib (23) is provided with a mounting hole (15) for mounting the fixing rod (5).

4. The intelligent air compressor based on direct current variable frequency technology according to claim 3, characterized in that: The stator (31), the first cylindrical part (11) and the second cylindrical part (21) are all provided with circumferentially distributed semicircular grooves (16), and the fixing rod (5) is clamped between the stator (31) and the first cylindrical part (11) / the second cylindrical part (21) through the semicircular grooves (16).

5. The intelligent air compressor based on DC variable frequency technology according to claim 4, characterized in that: The first cylindrical part (11) is provided with a clamping part (17), and the second cylindrical part (21) is provided with a clamping groove (27) corresponding to the clamping part (17).

6. The intelligent air compressor based on DC variable frequency technology according to claim 4, characterized in that: Both ends of the rotating shaft (33) are provided with heat dissipation fans (34), and the first side cavity (12) / the second side cavity (22) is provided with a fan cover (8).

7. The intelligent air compressor based on DC variable frequency technology according to claim 2, characterized in that: The air cylinder assembly (4) comprises an eccentric wheel (41), a piston rod (42), a cylinder piece (43), a cylinder sheet (44), a one-way pressing sheet (45), a special-shaped sealing ring (46) and an adapter pipe (47), one end of the piston rod (42) is rotationally connected to the rotating shaft (33) through the eccentric wheel (41), the other end is slidingly connected to the cylinder piece (43), the bottom surface of the cylinder sheet (44) is sealingly connected to the main housing (1) / auxiliary housing (2) through the cylinder piece (43), the top surface of the cylinder sheet (44) is sealingly connected to the main cylinder cover (6) / auxiliary cylinder cover (7) through the special-shaped sealing ring (46), and the cylinder sheet (44) is connected with the one-way pressing sheet (45) at the first air inlet cavity (100), the first air outlet cavity (101), the second air inlet cavity (102) and the second air outlet cavity (103).

8. The intelligent air compressor based on direct current variable frequency technology according to claim 7, characterized in that: The main housing (1) / auxiliary housing (2) is provided with an inner circular groove (18) and an outer ring groove (19) coaxially distributed, the outer ring groove (19) is provided with a plurality of circumferentially distributed studs (20), the cylinder piece (43) is sleeved on the inner circular groove (18), and the main cylinder cover (6) / auxiliary cylinder cover (7) is threadedly connected to the main housing (1) / auxiliary housing (2) through the studs (20).

9. The intelligent air compressor based on DC variable frequency technology according to claim 8, characterized in that: The main cylinder cover (6) and the auxiliary cylinder cover (7) are provided with a handle upper cover (61) and a handle lower cover (62) connected therebetween, the main cylinder cover (6) and the auxiliary cylinder cover (7) are provided with a mounting surface (63) for mounting the handle upper cover (61) at the adapter pipe (47), and the handle upper cover (61) and the handle lower cover (62) are arranged on the upper and lower sides of the adapter pipe (47).

Images