CN114884264B - Vortex vacuum pump with axial flux motor - Google Patents
Vortex vacuum pump with axial flux motor Download PDFInfo
- Publication number
- CN114884264B CN114884264B CN202210429778.9A CN202210429778A CN114884264B CN 114884264 B CN114884264 B CN 114884264B CN 202210429778 A CN202210429778 A CN 202210429778A CN 114884264 B CN114884264 B CN 114884264B
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- rotor
- flux motor
- pump
- axial flux
- rotating shaft
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- 230000004907 flux Effects 0.000 title claims abstract description 76
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 230000017525 heat dissipation Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims 3
- 210000004907 gland Anatomy 0.000 claims 1
- 238000005192 partition Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 238000000605 extraction Methods 0.000 description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000021615 conjugation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/04—Balancing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
- F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/08—Structural association with bearings
- H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention relates to a vortex vacuum pump with an axial flux motor, wherein a vacuum pumping mechanism is arranged in a shell, the axial flux motor is arranged at the rear end of the shell, the vacuum pumping mechanism comprises a pump stator, a pump rotor, an eccentric rotating shaft, a corrugated pipe assembly and a flange bearing seat, the pump stator and the pump rotor are mutually matched, a connecting cover is arranged at the front end of the corrugated pipe assembly and connected with the pump rotor, the rear end of the corrugated pipe assembly is fixed in the shell, the flange bearing seat is fixedly arranged in the shell and is inserted in the corrugated pipe assembly, the eccentric rotating shaft is rotatably arranged in the flange bearing seat, the front end of the eccentric rotating shaft is connected with the pump rotor, the rear end of the eccentric rotating shaft is connected with the axial flux motor rotor in the axial flux motor, a first balancing weight is arranged at the front end of the eccentric rotating shaft, the first balancing weight is arranged in the connecting cover, and a second balancing weight is arranged at the edge of the axial flux motor rotor. The invention adopts the axial flux motor to drive the eccentric rotating shaft to rotate, thereby greatly reducing the volume and weight of the vortex vacuum pump and ensuring the stability of the vortex vacuum pump.
Description
Technical Field
The invention relates to the field of vacuum equipment, in particular to a vortex vacuum pump with an axial flux motor.
Background
The conventional scroll vacuum pump generally adopts a radial gap type motor structure to drive a pump body main shaft to rotate, specifically, a motor adopted by the conventional scroll vacuum pump has a stator and a rotor coaxially sleeved and arranged, and an interacted magnetic field is radial, namely, the radial direction of the motor is the same as that of the scroll vacuum pump. In addition, some vortex vacuum pumps are driven by standard motors, the standard motors and the vortex vacuum pump main body are fixed in a transitional manner by using motor bases or shells, and shafts are connected through couplings. However, as the scroll vacuum pump is widely used, the scroll vacuum pump is used in a rough vacuum section more and more, which requires the scroll vacuum pump to be smaller and smaller, and the radial gap type motor structure or the standard motor has longer axial length, so that the volume of the scroll vacuum pump is greatly increased, and the use requirement is difficult to meet.
The axial flux motor is different from the common motor in structure, the magnetic flux direction is axial, and the unique disc coil structure can greatly reduce the volume and weight of the motor, if the axial flux motor can be combined with the vortex vacuum pump, the volume of the vortex vacuum pump can be definitely reduced, but the vortex vacuum pump is usually a basic air extraction mechanism formed by a vortex disc matching structure formed by combining a pump rotor and a pump stator, so that the stability requirement on an eccentric main shaft for driving the pump rotor to rotate is extremely high, and if the stability of the eccentric main shaft is reduced, the vortex disc matching between the pump rotor and the pump stator can be influenced, the air extraction efficiency is further influenced, even the vortex vacuum pump is locked, and the stability of the vortex vacuum pump is seriously influenced. Because no scroll vacuum pump adopting an axial flux motor is available at present, how to combine the axial flux motor with the scroll vacuum pump without affecting the stability of the scroll vacuum pump is a problem to be considered.
Disclosure of Invention
The invention aims to provide a vortex vacuum pump with an axial flux motor, which adopts the axial flux motor to drive an eccentric rotating shaft to rotate, so that the volume and weight of the vortex vacuum pump are greatly reduced, the rotation stability of the eccentric rotating shaft can be ensured, and the stability of the vortex vacuum pump is further ensured.
The aim of the invention is realized by the following technical scheme:
The utility model provides a vortex vacuum pump with axial magnetic flux motor, includes casing, vacuum air extraction mechanism and axial magnetic flux motor, and wherein vacuum air extraction mechanism locates in the casing, and axial magnetic flux motor locates the casing rear end, vacuum air extraction mechanism includes pump stator, pump rotor, eccentric pivot, bellows subassembly and flange bearing frame, and wherein pump stator and pump rotor mutually support, bellows subassembly front end be equipped with the connecting cover with pump rotor sealing connection, rear end seal be fixed in the casing, flange bearing frame set firmly in the casing and cartridge in the bellows subassembly, eccentric pivot rotate install in the flange bearing frame, just eccentric pivot front end with pump rotor links to each other, the rear end links to each other with axial magnetic flux motor rotor in the axial magnetic flux motor, eccentric pivot front end is equipped with first balancing weight, just first balancing weight is located in the connecting cover, axial magnetic flux motor rotor edge is equipped with the second balancing weight.
The eccentric rotating shaft comprises an eccentric shaft end, a shaft disc, a rotating shaft main body and a motor connecting end, wherein the shaft disc is arranged at the front end of the rotating shaft main body, the eccentric shaft end is arranged at the front side of the shaft disc and connected with the pump rotor, the first balancing weight is arranged on the eccentric shaft end, and the motor connecting end is arranged at the rear end of the rotating shaft main body and connected with the axial flux motor rotor.
The flange bearing pedestal is internally provided with a bearing and a distance sleeve component, wherein the front end and the rear end of a rotating shaft main body of the eccentric rotating shaft are respectively supported by the bearings at the corresponding ends, the outer side of the rotating shaft main body is sleeved with the distance sleeve component, the distance sleeve component is arranged between the two bearings, the middle part of an axial flux motor rotor is provided with a rotor shaft sleeve, the rotor shaft sleeve is sleeved on a motor connecting end at the rear end of the eccentric rotating shaft, the bearing in the front end of the flange bearing pedestal is propped against a shaft disc of the eccentric rotating shaft, a bearing compression ring is arranged between the bearing in the rear end of the flange bearing pedestal and the rotor shaft sleeve, the bearing compression ring is fixed on the flange bearing pedestal, one side, far away from the flange bearing pedestal, of the rotor shaft sleeve is provided with a locking nut, and the locking nut is sleeved on the motor connecting end.
The distance sleeve assembly comprises an inner layer distance sleeve and an outer layer distance sleeve, two ends of the inner layer distance sleeve and two ends of the outer layer distance sleeve are respectively propped against bearings on corresponding sides, and the bearings are angular contact ball bearings.
The axial flux motor rotor comprises a rotor core, the rotor shaft is sleeved in a through hole in the middle of the rotor core, and the second balancing weight is fixed on the edge of the rotor core.
The eccentric shaft end is sleeved with a rotor bearing, the rotor bearing is fixedly connected with the pump rotor, and the first balancing weight is arc-shaped and is arranged on the rotor bearing.
The corrugated pipe is characterized in that a partition plate is arranged in the shell, a first groove is formed in the middle of the partition plate, a through hole for the flange bearing seat to pass through is formed in the middle of the bottom of the first groove, a connecting disc is arranged at the rear end of the corrugated pipe assembly, a flange is arranged at the rear end of the flange bearing seat, the flange is fixedly arranged in the first groove of the partition plate, and the connecting disc is fixed on the partition plate and covers the first groove and the flange.
The bellows subassembly includes first ripple section, interlude and second ripple section, wherein first ripple section one end with the interlude links to each other, and the other end is equipped with the junction housing, second ripple section one end with the interlude links to each other, the other end with the connection pad links to each other.
The rear end of the shell is provided with a heat dissipation shell, and the axial flux motor is arranged in the heat dissipation shell.
The front end of the shell is provided with a fan assembly, and the lower side of the shell is provided with a main board base.
The invention has the advantages and positive effects that:
1. The axial flux motor is adopted to drive the eccentric rotating shaft to rotate, so as to drive the pump rotor to move, and the volume and the weight of the axial flux motor are smaller, so that the volume and the weight of the vortex vacuum pump body are greatly reduced.
2. The front end and the rear end of the rotating shaft main body of the eccentric rotating shaft are supported by the bearings, so that the support stability is ensured, the eccentric shaft end at the front end of the eccentric rotating shaft is provided with the first balancing weight, the axial flux motor rotor is provided with the second balancing weight, the eccentric rotating shaft is ensured to rotate stably, and the second balancing weight is arranged at the edge of the axial flux motor rotor.
3. The axial flux motor rotor is fixedly connected with the motor connecting end through the bearing pressing ring to press the structures such as the fixed bearing, the distance sleeve component and the like, and the locking nut is used for ensuring the compact overall structure, simultaneously facilitating the installation and the disassembly and facilitating the later maintenance.
4. The axial flux motor is arranged in the heat dissipation shell at the rear end of the shell, so that the volume of the vacuum pump is reduced, the noise is reduced, and the heat dissipation shell has high power density and excellent heat dissipation performance.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
Figure 2 is an exploded view of the invention of figure 1,
Figure 3 is a schematic view of the axial flux electric machine rotor of figure 1,
Figure 4 is A-A view of figure 3,
Figure 5 is a schematic view of the stator structure of the axial flux electric machine of figure 1,
Fig. 6 is a schematic diagram of the working process of the present invention.
Wherein 1 is a vacuum pumping mechanism, 101 is a pump stator, 1011 is a stator vortex plate, 102 is a pump rotor, 1021 is a rotor vortex plate, 1022 is a connecting plate, 103 is an eccentric rotating shaft, 1031 is an eccentric shaft end, 1032 is a motor connecting end, 1033 is a shaft disc, 104 is a corrugated pipe assembly, 1041 is a connecting cover, 1042 is a connecting disc, 1043 is a middle section, 104 is a corrugated pipe assembly, 105 is a distance sleeve assembly, 1051 is an inner layer distance sleeve, 1052 is an outer layer distance sleeve, 106 is a bearing, 107 is a first balancing weight, 108 is a rotor bearing, 109 is a flange bearing seat, 110 is a bearing press ring, 2 is a shell, 201 is a partition plate, 202 is a shell inner cavity, 3 is an axial flux motor, 301 is an axial flux motor rotor, 3011 is a rotor shaft sleeve, 3012 is a rotor core, 3013 is a second balancing weight, 3014 is a screw, 302 is an axial motor stator, 3021 is a coil, 3022 is a stator core, 3023 is a lead wire, 303 is a heat dissipation shell, 304 is a locking nut, 4 is a base, and 5 is a fan assembly.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 6, the invention comprises a shell 2, a vacuum pumping mechanism 1 and an axial flux motor 3, wherein the vacuum pumping mechanism 1 is arranged in the shell 2, the axial flux motor 3 is arranged at the rear end of the shell 2, the vacuum pumping mechanism 1 comprises a pump stator 101, a pump rotor 102, an eccentric rotating shaft 103, a corrugated pipe assembly 104 and a flange bearing seat 109, wherein the pump stator 101 and the pump rotor 102 are mutually matched, a connecting cover 1041 is arranged at the front end of the corrugated pipe assembly 104 and is in sealing connection with the pump rotor 102, the rear end of the corrugated pipe assembly is in sealing connection with the shell 2, the flange bearing seat 109 is fixedly arranged in the shell 2 and is inserted into the corrugated pipe assembly 104, the eccentric rotating shaft 103 is rotatably arranged in the flange bearing seat 109, the front end of the eccentric rotating shaft 103 is connected with the pump rotor 102, the rear end of the eccentric rotating shaft 103 is connected with an axial flux motor rotor 301 in the axial flux motor 3, a first balancing weight 107 is arranged at the front end of the eccentric rotating shaft 103, the first balancing weight 107 is arranged in the connecting cover 1041, the edge of the axial flux motor rotor 301 is provided with a second balancing weight 3013. The invention adopts the axial flux motor 3 to drive the eccentric rotating shaft 103 to rotate so as to drive the pump rotor 102 to move, and the volume and weight of the axial flux motor 3 are smaller, so that the volume and weight of a vortex vacuum pump body are greatly reduced.
As shown in fig. 1-2, the eccentric rotating shaft 103 includes an eccentric shaft end 1031, a shaft disc 1033, a rotating shaft main body and a motor connecting end 1032, wherein the front end of the rotating shaft main body is provided with the shaft disc 1033, the front side of the shaft disc 1033 is provided with the eccentric shaft end 1031 connected with the pump rotor 102, the eccentric shaft end 1031 is sleeved with a rotor bearing 108, the rotor bearing 108 is fixedly connected with the pump rotor 102, as shown in fig. 2, the first balancing weight 107 is arc-shaped and is mounted on the rotor bearing 108, the rotor bearing 108 and the first balancing weight 107 are both arranged in the connecting cover 1041, and the rear end of the rotating shaft main body is provided with the motor connecting end 1032 connected with the axial flux motor rotor 301.
As shown in fig. 1-2, a bearing 106 and a distance sleeve assembly 105 are disposed in the flange bearing seat 109, wherein the front end and the rear end of a rotating shaft main body of the eccentric rotating shaft 103 are respectively supported by the bearing 106 at the corresponding ends, the distance sleeve assembly 105 is sleeved outside the rotating shaft main body, the distance sleeve assembly 105 is disposed between the two bearings 106, a rotor shaft sleeve 3011 is disposed in the middle of the axial flux motor rotor 301, the rotor shaft sleeve 3011 is sleeved on a motor connection end 1032 at the rear end of the eccentric rotating shaft 103, the bearing 106 in the front end of the flange bearing seat 109 abuts against a shaft disc 1033 of the eccentric rotating shaft 103, a bearing pressing ring 110 is disposed between the bearing 106 in the rear end of the flange bearing seat 109 and the rotor shaft sleeve 3011, and the bearing pressing ring 110 is fixed on the flange bearing seat 109 by screws, so as to realize axial limiting of the bearing 106, a locking nut 304 is disposed on one side of the rotor shaft sleeve 3011 away from the flange bearing seat 109, the locking nut 304 is sleeved on the motor connection end 1032, after the locking nut 304 is screwed, so as to realize fixing of the axial flux motor rotor 301 and the motor connection end 1032, and further realize axial fixing of the air suction mechanism 1. The front end and the rear end of the rotating shaft main body of the eccentric rotating shaft 103 are supported by the bearing 106, the two-point support ensures the stability of the support and further ensures the rotation stability of the eccentric rotating shaft 103, the bearing pressing ring 110 is used for pressing and fixing the structures such as the bearing 106, the distance sleeve assembly 105 and the like, the axial flux motor rotor 301 is fixedly connected with the motor connecting end 1032 by the locking nut 304, the compact integral structure is ensured, and the installation and the disassembly are convenient, so that the later maintenance is facilitated.
As shown in fig. 2, in this embodiment, the distance sleeve assembly 105 includes an inner distance sleeve 1051 and an outer distance sleeve 1052, where two ends of the inner distance sleeve 1051 and two ends of the outer distance sleeve 1052 respectively support against the bearings 106 on the corresponding sides to ensure the distance between the bearings 106. In this embodiment, the bearing 106 is an angular ball bearing.
As shown in fig. 1, a partition 201 is disposed in the housing 2, a first groove is disposed in the middle of the partition 201, a through hole through which the flange bearing seat 109 passes is disposed in the middle of the bottom of the first groove, a connection pad 1042 is disposed at the rear end of the bellows assembly 104, a flange is disposed at the rear end of the flange bearing seat 109, the flange is fixedly mounted in the first groove of the partition 201, and the connection pad 1042 is fixed on the partition 201 and covers the first groove and the flange, so that the flange bearing seat 109 is completely disposed in the bellows assembly 104.
As shown in fig. 2, the bellows assembly 104 includes a first bellows section, a middle section 1043, and a second bellows section, where one end of the first bellows section is connected to the middle section 1043, the other end is provided with the connection housing 1041, one end of the second bellows section is connected to the middle section 1043, and the other end is connected to the connection pad 1042. When the invention works, the eccentric rotating shaft 103 drives the pump rotor 102 to rotate through the driving of the axial flux motor 3, and the bellows component 104 swings with the follow-up. The bellows assembly 104 completely isolates the outer housing cavity 202 from the first balancing weight 107, the rotor bearing 108, the eccentric rotating shaft 103, the flange bearing seat 109 and the like, so that air is prevented from entering the housing cavity 202 at the outer side of the bellows assembly 104 through the installation positions of the bearing 106 and the like, and the operation stability and the ultimate vacuum degree of the scroll vacuum pump are improved.
As shown in fig. 3 to 4, the axial flux motor rotor 301 includes a rotor core 3012, the rotor shaft sleeve 3011 is disposed in a through hole in the middle of the rotor core 3012, and the second balancing weight 3013 is fixed to an edge of the rotor core 3012 by a screw 3014. The rotor core 3012 is a permanent magnet. As shown in fig. 5, the axial flux motor stator 302 includes a coil 3021 and a stator core 3022, the coil 3021 is disposed outside the stator core 3022, and a lead wire 3023 is disposed on one side of the coil 3021.
As shown in fig. 1-2, a heat dissipation housing 303 is disposed at the rear end of the housing 2, and the axial flux motor rotor 301 and the axial flux motor stator 302 are both disposed in the heat dissipation housing 303. Radiating rib plates are uniformly distributed on the radiating shell 303 to realize a radiating function, and the shape of the radiating shell 303 is matched with that of the shell 2 to form a whole, so that the attractive appearance of a product is ensured.
As shown in fig. 1 to 2 and fig. 6, the pump stator 101 is provided with a stator scroll plate 1011, the pump rotor 102 is provided with a rotor scroll plate 1021, and the stator scroll plate 1011 and the rotor scroll plate 1021 are in line conjugation engagement. As shown in fig. 6, the pump rotor 102 is driven by the eccentric rotation shaft 103 to move, and in the rotation process, a compression chamber formed between the stator scroll plate 1011 and the rotor scroll plate 1021 changes accordingly to realize a vacuum pumping function. The pump stator 101 and pump rotor 102 construction and operation principle are well known in the art.
As shown in fig. 2, the pump rotor 102 is provided with a connection plate 1022, the rotor vortex plate 1021 is arranged on the connection plate 1022, as shown in fig. 1, a connection cover 1041 at the front end of the bellows assembly 104 is fixedly arranged on the connection plate 1022, in addition, a second groove is arranged in the middle of the connection plate 1022, and the rotor bearing 108 is embedded in the second groove.
As shown in fig. 1-2, a fan assembly 5 is disposed at the front end of the housing 2, after the fan assembly 5 is started, heat generated by the stator vortex plate 1011 can be taken away, the surface temperature of the stator vortex plate is reduced, the deformation of the stator vortex plate is further controlled, the stability of the vacuum pumping mechanism 1 is improved, in addition, a main board base 4 is disposed at the lower side of the housing 2, and a control main board module of the whole device can be integrated in the main board base 4. The fan assembly 5 and the control motherboard module are both well known in the art.
The working principle of the invention is as follows:
As shown in fig. 6, the stator vortex plate 1011 on the pump stator 101 and the rotor vortex plate 1021 on the pump rotor 102 are in line conjugate embedding, when the invention works, the pump rotor 102 is driven to move by the eccentric rotating shaft 103, and in the rotating process, the compression chamber formed between the stator vortex plate 1011 and the rotor vortex plate 1021 changes along with the rotation to realize the vacuum pumping function, which is a well-known technology in the field.
As shown in figures 1-2, the axial flux motor 3 is adopted to drive the eccentric rotating shaft 103 to rotate, and then the pump rotor 102 is driven to move, because the volume and the weight of the axial flux motor 3 are smaller, the volume and the weight of a vortex vacuum pump body are greatly reduced, in addition, because the structure of the axial flux motor 3 is greatly different from the structure of the existing radial motor and the structure of a standard motor, the support structure of the eccentric rotating shaft 103 is redesigned to ensure the stability of the vortex vacuum pump, wherein the front end and the rear end of the rotating shaft main body of the eccentric rotating shaft 103 are supported by a bearing 106, the stability of the support is ensured, and the axial flux motor rotor 301 is fixedly connected with the motor connecting end 1032 by a bearing compression ring 110 through the fixed bearing 106, the locking nut 304, the installation and the disassembly are convenient, and the later maintenance are facilitated, and a first balancing weight 107 is arranged on the eccentric shaft end 1031 of the front end of the eccentric rotating shaft 103, a second balancing weight 3013 is arranged on the axial flux motor rotor 301, the first balancing weight 107 and the second balancing weight 3013 ensure the stability of the rotation of the eccentric rotating shaft 103, the eccentric balancing weight 103 is generally arranged on the rotating shaft 103, the axial balancing weight 103 is arranged on the side of the rotating shaft 103, and the axial flux motor rotor 103 is not required to be combined with the rotating shaft 103, and the axial force moment is greatly limited, and the axial force is easily is limited, and the axial force is effectively limited, and the axial force is required to rotate the rotating shaft 103 is greatly limited, and the axial force is required to be arranged on the rotating shaft pump rotor, and the rotating motor rotating shaft 103 and the axial rotating motor has the axial pump has the axial stability is compared with the axial pump rotating shaft and the rotating axial pump rotor, and the rotating shaft and the pump rotor, and the pump rotor and the pump is realized and has the pump. And simultaneously has larger starting moment.
Claims (10)
1. A scroll vacuum pump having an axial flux motor, characterized by: including casing (2), vacuum pumping mechanism (1) and axial magnetic flux motor (3), wherein in casing (2) were located in vacuum pumping mechanism (1), axial magnetic flux motor (3) were located casing (2) rear end, vacuum pumping mechanism (1) include pump stator (101), pump rotor (102), eccentric pivot (103), bellows subassembly (104) and flange bearing frame (109), wherein pump stator (101) and pump rotor (102) mutually support, bellows subassembly (104) front end be equipped with connect cover (1041) with pump rotor (102) sealing connection, rear end sealing fixation in casing (2), flange bearing frame (109) set firmly in casing (2) and cartridge in bellows subassembly (104), eccentric pivot (103) rotate install in flange bearing frame (109), just eccentric pivot (103) front end with pump rotor (102) link to each other, the rear end links to each other with axial motor rotor (301) in axial magnetic flux motor (3), eccentric pivot (103) front end is equipped with first balancing weight (107), and first balancing weight (107) are equipped with in axial balancing weight (107) magnetic flux motor (107) are located in axial balancing weight (107).
2. The scroll vacuum pump having an axial flux motor of claim 1, wherein: the eccentric rotating shaft (103) comprises an eccentric shaft end (1031), a shaft disc (1033), a rotating shaft main body and a motor connecting end (1032), wherein the shaft disc (1033) is arranged at the front end of the rotating shaft main body, the eccentric shaft end (1031) is arranged at the front side of the shaft disc (1033) and connected with the pump rotor (102), the first balancing weight (107) is arranged on the eccentric shaft end (1031), and the motor connecting end (1032) is arranged at the rear end of the rotating shaft main body and connected with the axial flux motor rotor (301).
3. The scroll vacuum pump having an axial flux motor of claim 2, wherein: be equipped with bearing (106) and spacer subassembly (105) in flange bearing frame (109), wherein pivot main part front end and the rear end of eccentric rotating shaft (103) support through bearing (106) of corresponding end respectively, pivot main part outside cover is equipped with spacer subassembly (105), just spacer subassembly (105) are located between two bearings (106), axial flux motor rotor (301) middle part is equipped with rotor sleeve (3011), just rotor sleeve (3011) suit in on motor link (1032) of eccentric rotating shaft (103) rear end, bearing (106) in flange bearing frame (109) front end with shaft disk (1033) of eccentric rotating shaft (103) offset, bearing (106) in flange bearing frame (109) rear end with be equipped with bearing (110) between rotor sleeve (3011), and on bearing (110) are fixed in flange bearing frame (109) rotor sleeve (3011) keep away from flange bearing frame (109) one side and be equipped with lock nut (304), and motor suit in on gland ring (1032) link.
4. A scroll vacuum pump having an axial flux motor as defined in claim 3, wherein: the distance sleeve assembly (105) comprises an inner layer distance sleeve (1051) and an outer layer distance sleeve (1052), two ends of the inner layer distance sleeve (1051) and two ends of the outer layer distance sleeve (1052) are respectively propped against bearings (106) on corresponding sides, and the bearings (106) are angular contact ball bearings.
5. A scroll vacuum pump having an axial flux motor as defined in claim 3, wherein: the axial flux motor rotor (301) comprises a rotor core (3012), the rotor shaft sleeve (3011) is arranged in a through hole in the middle of the rotor core (3012), and the second balancing weight (3013) is fixed at the edge of the rotor core (3012).
6. The scroll vacuum pump having an axial flux motor of claim 2, wherein: the eccentric shaft end (1031) is sleeved with a rotor bearing (108), the rotor bearing (108) is fixedly connected with the pump rotor (102), and the first balancing weight (107) is arc-shaped and is installed on the rotor bearing (108).
7. The scroll vacuum pump having an axial flux motor of claim 1, wherein: be equipped with baffle (201) in casing (2), baffle (201) middle part is equipped with first recess, and first recess tank bottom middle part is equipped with the confession flange bearing frame (109) pass the through-hole, bellows subassembly (104) rear end is equipped with connection pad (1042), flange bearing frame (109) rear end is equipped with the flange, and the flange install in the first recess of baffle (201), connection pad (1042) are fixed in baffle (201) are last and cover first recess and flange.
8. The scroll vacuum pump having an axial flux motor of claim 7, wherein: the corrugated pipe assembly (104) comprises a first corrugated pipe section, a middle section (1043) and a second corrugated pipe section, wherein one end of the first corrugated pipe section is connected with the middle section (1043), the other end of the first corrugated pipe section is provided with the connecting cover (1041), one end of the second corrugated pipe section is connected with the middle section (1043), and the other end of the second corrugated pipe section is connected with the connecting disc (1042).
9. The scroll vacuum pump having an axial flux motor of claim 1, wherein: the rear end of the shell (2) is provided with a heat dissipation shell (303), and the axial flux motor (3) is arranged in the heat dissipation shell (303).
10. The scroll vacuum pump having an axial flux motor of claim 1, wherein: the front end of the shell (2) is provided with a fan assembly (5), and the lower side of the shell (2) is provided with a main board base (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210429778.9A CN114884264B (en) | 2022-04-22 | 2022-04-22 | Vortex vacuum pump with axial flux motor |
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| CN202210429778.9A CN114884264B (en) | 2022-04-22 | 2022-04-22 | Vortex vacuum pump with axial flux motor |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660527A (en) * | 2008-08-29 | 2010-03-03 | 中国科学院沈阳科学仪器研制中心有限公司 | Low-pumping-speed oil free scroll vacuum pump |
| CN110131126A (en) * | 2018-02-08 | 2019-08-16 | 米巴烧结奥地利有限公司 | Pumping system, axial-flux electric machine and compressor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3635912B2 (en) * | 1997-03-06 | 2005-04-06 | 株式会社日立製作所 | Permanent magnet rotating electric machine |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660527A (en) * | 2008-08-29 | 2010-03-03 | 中国科学院沈阳科学仪器研制中心有限公司 | Low-pumping-speed oil free scroll vacuum pump |
| CN110131126A (en) * | 2018-02-08 | 2019-08-16 | 米巴烧结奥地利有限公司 | Pumping system, axial-flux electric machine and compressor |
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