CN113074130A - Centrifugal contra-rotating air pump with axial air inlet at two ends - Google Patents
Centrifugal contra-rotating air pump with axial air inlet at two ends Download PDFInfo
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- CN113074130A CN113074130A CN202110271948.0A CN202110271948A CN113074130A CN 113074130 A CN113074130 A CN 113074130A CN 202110271948 A CN202110271948 A CN 202110271948A CN 113074130 A CN113074130 A CN 113074130A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/162—Double suction pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/164—Multi-stage fans, e.g. for vacuum cleaners
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/664—Sound attenuation by means of sound absorbing material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a centrifugal contra-rotating air pump with axial air inlet at two ends, which comprises an air inlet fan and a centrifugal contra-rotating air pump main body, the two motors are fixedly connected inside the centrifugal contra-rotating air pump main body, the output ends of the two motors are fixedly connected with the air inlet fans, the two air inlet fans are respectively positioned at the two ends inside the centrifugal contra-rotating air pump main body, the centrifugal impellers are respectively arranged at the two sides of the two motors, the two motors are arranged in a relatively distributed manner, the rotating directions are opposite, the suction capacity of the air pump system is greatly improved, under the condition of the same volume and motor power, the pumping capacity of the single set of counter-rotating air pump is more than 1.5 times that of the traditional air pump system, and the aim of reducing energy consumption is fulfilled to a certain extent, for the same working condition, the power consumption of the single set of counter-rotating air pump is less than 70 percent of that of the traditional air pump.
Description
Technical Field
The invention belongs to the technical field of gas suction and discharge, and particularly relates to a centrifugal contra-rotating air pump with axial air inflow at two ends.
Background
The air pump is an air pump, a device for removing air from a closed space or adding air from the closed space, the air pump mainly comprises an electric air pump, a manual air pump, a foot-operated air pump and an electric air pump, the air pump taking electric power as power generates air pressure by continuously compressing air through electric power, and is mainly used for inflating, sewage treatment, electroplating air blowing, methane tank aeration, tunnel ventilation and the like, along with social development and increasingly aggravated demand for energy, stronger suction capacity and less energy consumption, the novel air pump is widely used, the technology is a new advanced flow control technology to be applied to the next generation of aeroengine, large-flow and efficient transportation of air by a small-volume compact air pump is realized on the premise of lower power consumption and smaller noise, and actual measurement shows that equipment with the size of a paper basket can realize large-flow and efficient transportation of air with the area of 50 square meters in 10 minutes, Thorough circulation of air in the office space of 3 meters in floor height, filtration and purification, some air pumps admit air for the one end axial, work efficiency is not high enough, the power consumption is big, it is not good enough to lead to great inside circulation of air in place easily, the air inlet of air pump lacks filter equipment, some dust particles are taken out when bleeding easily, bigger solid rubbish granule even, it is impaired to lead to the inside fan piece of air pump easily, thereby influence the life of air pump, and the air pump can send partial noise when the operation, cause the pollution to the surrounding environment easily, even cause the influence to the staff's of the long-time closely contact with the air pump hearing.
Disclosure of Invention
The invention aims to overcome the technical problem of the prior art, and provides a centrifugal contra-rotating air pump with axial air inlet at two ends, so as to solve the problems that part of air pumps provided in the background technology is provided with axial air inlet at one end, the working efficiency is not high enough, the air circulation in a large place is not good enough, an air inlet of the air pump is lack of a filtering device, some dust particles and even larger solid garbage particles are easy to be pumped up during air suction, a fan sheet in the air pump is easy to be damaged, the service life of the air pump is influenced, partial noise can be generated during the operation of the air pump, the pollution to the surrounding environment is easy to be caused, and the hearing of workers in long-time close contact with the air pump is influenced.
In order to achieve the purpose, the invention provides the following technical scheme: a centrifugal contra-rotating air pump with axial air inflow at two ends comprises an air inlet fan and a centrifugal contra-rotating air pump main body, wherein two motors are fixedly connected inside the centrifugal contra-rotating air pump main body, the output ends of the two motors are fixedly connected with the air inlet fan, the two air inlet fans are respectively positioned at the two ends inside the centrifugal contra-rotating air pump main body, centrifugal impellers are respectively arranged at two sides of the two motors, the centrifugal impellers are positioned at the two sides inside the centrifugal contra-rotating air pump main body, one end of each centrifugal impeller is fixedly connected with a centrifugal impeller baffle, the centrifugal impeller baffle is positioned at the two ends of one side of an air inlet of an air pump, the two ends of each air inlet fan are fixedly connected with the centrifugal impellers, one side of the air inlet of the air pump is provided with a fixing plate, the, the fixed plate passes through bolt and centrifugation contra-rotating air pump main part fixed connection, fixedly connected with spacing ring on the fixed plate, the spacing ring is located one side of fixed plate, one side of spacing ring is provided with the connecting plate, connecting plate and filter screen fixed connection, four through-holes, every have been seted up to equidistant on the side ring of fixed plate the inside inserted bar that all is provided with of through-hole, every the one end of inserted bar all is located one side of filter screen.
Preferably, one end of the inside of the through hole is fixedly connected with a connecting sheet, one side of the connecting sheet is provided with one end of an inserting rod, the other end of the inserting rod penetrates through the center of the connecting sheet and is located on one side of the through hole, the inserting rod is connected with the connecting sheet in a sliding mode, and the inserting rod and the connecting sheet are respectively fixedly connected with two ends of the spring.
Preferably, the centrifugal contra-rotating air pump main body is internally provided with sound-absorbing cotton, and the sound-absorbing cotton is positioned on one side of the air outlet.
Preferably, the air outlet is fixed at two sides of the interior of the centrifugal contra-rotating air pump main body, and two centrifugal impellers are arranged at one side of the motor.
Preferably, the diameter of the inner ring of the limiting ring is smaller than that of the connecting plate.
Preferably, the air intake fan and the centrifugal impeller are both located inside the centrifugal counter-rotating air pump main body, and the air intake fan is perpendicular to the centrifugal impeller.
Preferably, the two motors are oppositely distributed in the centrifugal counter-rotating air pump body, and the rotation directions of the two motors are opposite.
Compared with the prior art, the invention provides a centrifugal contra-rotating air pump with axial air inlet at two ends, which has the following beneficial effects:
1. the two motors are arranged in opposite distribution and reverse rotation directions, so that the pumping capacity of the air pump system is greatly improved, under the condition of the same volume and motor power, the pumping capacity of the single set of counter-rotating air pumps is more than 1.5 times that of the traditional air pump system, and the aim of reducing energy consumption is fulfilled to a certain extent.
2. According to the centrifugal counter-rotating air pump, the filter screens are fixedly connected to the two ends of the main body of the centrifugal counter-rotating air pump through the fixing plates, the filter screens are located on one side of the air inlet of the air pump, filter holes are formed in the filter screens, so that part of large solid garbage particles can be prevented from entering the air inlet of the air pump, the fan blades in the air pump can be prevented from being damaged, the service life of the air pump can be prolonged, the inserting rods are arranged on the fixing plates and used for fixing the positions of the filter screens, and are in sliding connection with the fixing plates, so that operators can detach and clean the.
3. According to the centrifugal contra-rotating air pump, the sound-absorbing cotton is arranged in the main body of the centrifugal contra-rotating air pump, and the small holes in the sound-absorbing cotton can effectively absorb part of noise, so that the sound generated when the device runs can be reduced, the pollution to the surrounding environment is prevented, and the adverse effect on the hearing of workers in short-distance contact with the device for a long time is avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention without limiting the invention in which:
FIG. 1 is a schematic diagram of the internal structure proposed by the present invention;
FIG. 2 is a partial view of the intake fan and centrifugal impeller assembly according to the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a schematic view of a connection structure of a fixing plate and a plug according to the present invention;
in the figure: 1. an air intake fan; 2. a centrifugal impeller baffle; 3. a centrifugal impeller; 4. a motor; 5. an air inlet of the air pump; 6. an air outlet; 7. sound-absorbing cotton; 8. a centrifugal counter-rotating air pump main body; 9. a fixing plate; 10. a bolt; 11. a limiting ring; 12. a connecting plate; 13. a filter screen; 14. inserting a rod; 15. a through hole; 16. connecting sheets; 17. a spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a centrifugal contra-rotating air pump with axial air inflow at two ends comprises an air inlet fan 1 and a centrifugal contra-rotating air pump main body 8, wherein two motors 4 are fixedly connected inside the centrifugal contra-rotating air pump main body 8, the output ends of the two motors 4 are fixedly connected with the air inlet fan 1, the two air inlet fans 1 are respectively positioned at the two ends inside the centrifugal contra-rotating air pump main body 8, two sides of the two motors 4 are respectively provided with a centrifugal impeller 3, the centrifugal impellers 3 are positioned at the two sides inside the centrifugal contra-rotating air pump main body 8, one end of the centrifugal impeller 3 is fixedly connected with a centrifugal impeller baffle 2, the centrifugal impeller baffle 2 is positioned at the two ends of one side of an air inlet 5 of the air pump, two ends of the air inlet fan 1 are respectively and fixedly connected with the centrifugal impeller 3, one side of an air inlet 5 of the air pump, fixed plate 9 passes through bolt 10 and 8 fixed connection of centrifugation contra-rotating air pump main part, fixedly connected with spacing ring 11 on the fixed plate 9, spacing ring 11 is located one side of fixed plate 9, one side of spacing ring 11 is provided with connecting plate 12, connecting plate 12 and filter screen 13 fixed connection, equidistant four through-holes 15 have been seted up on the side ring of fixed plate 9, every through-hole 15 is inside all to be provided with inserted bar 14, the one end of every inserted bar 14 all is located one side of filter screen 13, be convenient for with the rigidity of filter screen 13.
In the invention, preferably, one end inside the through hole 15 is fixedly connected with a connecting piece 16, one side of the connecting piece 16 is provided with one end of an inserting rod 14, the other end of the inserting rod 14 penetrates through the central position of the connecting piece 16 and is positioned at one side of the through hole 15, the inserting rod 14 is in sliding connection with the connecting piece 16, and the inserting rod 14 and the connecting piece 16 are respectively and fixedly connected with two ends of a spring 17, so that an operator can conveniently detach and clean the filter screen 13, and the filter screen 13 can better filter part of solid particles.
In the invention, preferably, the sound-absorbing cotton 7 is arranged inside the centrifugal contra-rotating air pump main body 8, and the small holes on the sound-absorbing cotton 7 can effectively absorb part of noise, so that the sound generated when the device operates can be reduced, the pollution to the surrounding environment is prevented, the adverse effect on the hearing of workers in short-distance contact with the device for a long time is avoided, and the sound-absorbing cotton 7 is positioned at one side of the air outlet 6.
In the present invention, it is preferable that the air outlet 6 is fixed at both sides of the inside of the centrifugal counter-rotating air pump body 8, and two centrifugal impellers 3 are provided at one side of the motor 4.
In the present invention, it is preferable that the inner ring diameter of the retainer ring 11 is smaller than the diameter of the connection plate 12.
In the present invention, it is preferable that the intake fan 1 and the centrifugal impeller 3 are both located inside the centrifugal counter-rotating air pump body 8, and the intake fan 1 is perpendicular to the centrifugal impeller 3.
In the present invention, it is preferable that the two motors 4 are oppositely disposed inside the centrifugal counter-rotating air pump body 8, and the rotation directions of the two motors 4 are opposite.
The working principle and the using process of the invention are as follows: when the double-impeller contra-rotating air pump structure works, the air inlet fan 1 is positioned at one side of the air inlet 5 of the air pump and is fixed with the centrifugal impeller baffle 2, the centrifugal impeller 3 is fixed at the lower part of the centrifugal impeller baffle 2, the air inlet fan 1 and the centrifugal impeller 3 are coaxial, three parts form a rotor, the motor 4 drives the rotor to rotate, so that the air inlet fan 1 has air suction capacity, air sucked from the air inlet 5 of the air pump enters the inside of the centrifugal impeller 3, a part of the air is directly discharged from the air outlet 6 after the rotation compression of the centrifugal impeller 3, a part of the air enters the inside of the centrifugal impeller 3 of the other rotor, and the centrifugal impeller 3 of the other rotor reversely accelerates due to the opposite rotation direction of the other rotor, thereby realizing secondary compression of the air, the air has higher speed and pressure at the moment, and can enable the device to realize higher suction capacity, because a part of gas can enter the other stage of rotor to carry out secondary compression during working, which is equivalent to reducing the air flow loss in the direction of a non-gas outlet, the utility model not only improves the suction capacity of the device, but also reduces the energy consumption, the utility model is provided with the sound-absorbing cotton 7, the small holes on the sound-absorbing cotton 7 can effectively absorb part of noise, thereby reducing the sound generated during the operation of the device, preventing the pollution to the surrounding environment and avoiding the adverse effect on the hearing of workers in short-distance contact with the device for a long time, the utility model is characterized in that the two ends of the centrifugal contra-rotating air pump main body 8 are fixedly connected with the filter screen 13 through the fixed plate 9, the filter screen 13 is positioned at one side of the air pump air inlet 5, the filter screen 13 is provided with filter holes, which is beneficial to preventing part of, thereby be favorable to extension fixture's life, be provided with inserted bar 14 on the fixed plate for the position of fixed filter screen 13, inserted bar 14 and fixed plate 9 sliding connection, thereby be convenient for operating personnel to dismantle filter screen 13 and clear up, be favorable to the better filter part solid particle of filter screen 13, the utility model discloses in the in-service use, because stronger suction capacity, can realize under the same operating condition under less air pump volume and the energy consumption or the same volume and the energy consumption under bigger working range, moreover because the utility model discloses mainly lie in rotor mounting structure's innovation, not introduce new part structure and complex structure overall arrangement, so realize the product improvement on current air pump production line very easily, it is more favorable to the product popularization, and littleer volume size also helps more extensive family ization market.
Example 1:
the double-impeller contra-rotating wind wheel structure suitable for the small wind driven generator is adopted to carry out wind tunnel blowing research, and incoming flow wind speeds are respectively 7m/s, 8m/s, 9m/s and 10 m/s. The output power of the single-wheel wind wheel structure and the contra-rotating wind wheel structure with the same design size (the same wing profile and the same maximum rotation radius) is respectively measured, and the experimental results are obtained as follows:
TABLE 1 Experimental Structure
As can be seen from table 1, the twin-impeller counter-rotating wind wheel structure of the present invention has at least 40% improvement in wind energy utilization rate in comparison with the conventional single-impeller wind wheel structure under the condition of medium wind power.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a both ends axial is admitted air the centrifugation and is changeed air pump, includes inlet fan (1) and centrifugation and is changeed air pump main part (8), its characterized in that: the centrifugal contra-rotating air pump comprises a centrifugal contra-rotating air pump main body (8), two motors (4) are fixedly connected inside the centrifugal contra-rotating air pump main body (8), air inlet fans (1) are fixedly connected to the output ends of the two motors (4), the two air inlet fans (1) are respectively located at the two inner end positions of the centrifugal contra-rotating air pump main body (8), centrifugal impellers (3) are arranged on the two sides of the two motors (4), the centrifugal impellers (3) are located at the two inner end positions of the centrifugal contra-rotating air pump main body (8), a centrifugal impeller baffle (2) is fixedly connected to one end of each centrifugal impeller (3), the centrifugal impeller baffle (2) is located at the two end positions of one side of an air pump air inlet (5), the centrifugal impellers (3) are fixedly connected to the two ends of the air inlet fans (1), a fixing plate (9) is arranged on one side of the, four bolts (10) of fixedly connected with on fixed plate (9), fixed plate (9) through bolt (10) with the centrifugation contra-rotating air pump main part (8) fixed connection, fixedly connected with spacing ring (11) on fixed plate (9), spacing ring (11) are located one side of fixed plate (9), one side of spacing ring (11) is provided with connecting plate (12), connecting plate (12) and filter screen (13) fixed connection, equidistant four through-holes (15) of having seted up on the side ring of fixed plate (9), every through-hole (15) inside all is provided with inserted bar (14), every the one end of inserted bar (14) all is located one side of filter screen (13).
2. The centrifugal contra-rotating air pump with axial air inlet at two ends as claimed in claim 1, wherein: the spring is characterized in that a connecting piece (16) is fixedly connected to one end of the inside of the through hole (15), one end of an inserting rod (14) is arranged on one side of the connecting piece (16), the other end of the inserting rod (14) penetrates through the center of the connecting piece (16) to be located on one side of the through hole (15), the inserting rod (14) is connected with the connecting piece (16) in a sliding mode, and the inserting rod (14) and the connecting piece (16) are fixedly connected with the two ends of a spring (17) respectively.
3. The centrifugal contra-rotating air pump with axial air inlet at two ends as claimed in claim 1, wherein: the inside of centrifugation contra-rotating air pump main part (8) is provided with inhales sound cotton (7), inhale one side position that sound cotton (7) are located gas outlet (6).
4. The centrifugal contra-rotating air pump with axial air inlet at two ends as claimed in claim 3, wherein: the air outlet (6) is fixed at two inner side positions of the centrifugal contra-rotating air pump main body (8), and two centrifugal impellers (3) are arranged at one side of the motor (4).
5. The centrifugal contra-rotating air pump with axial air inlet at two ends as claimed in claim 1, wherein: the diameter of the inner ring of the limiting ring (11) is smaller than that of the connecting plate (12).
6. The centrifugal contra-rotating air pump with axial air inlet at two ends as claimed in claim 1, wherein: the air inlet fan (1) and the centrifugal impeller (3) are both positioned in the centrifugal counter-rotating air pump main body (8), and the air inlet fan (1) is vertical to the centrifugal impeller (3).
7. The centrifugal contra-rotating air pump with axial air inlet at two ends as claimed in claim 1, wherein: the two motors (4) are oppositely distributed in the centrifugal counter-rotating air pump main body (8), and the rotation directions of the two motors (4) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271948.0A CN113074130A (en) | 2021-03-12 | 2021-03-12 | Centrifugal contra-rotating air pump with axial air inlet at two ends |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110271948.0A CN113074130A (en) | 2021-03-12 | 2021-03-12 | Centrifugal contra-rotating air pump with axial air inlet at two ends |
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| Publication Number | Publication Date |
|---|---|
| CN113074130A true CN113074130A (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110271948.0A Pending CN113074130A (en) | 2021-03-12 | 2021-03-12 | Centrifugal contra-rotating air pump with axial air inlet at two ends |
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| CN (1) | CN113074130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726623A (en) * | 2023-07-04 | 2023-09-12 | 兰州大学 | Portable air filtering device |
-
2021
- 2021-03-12 CN CN202110271948.0A patent/CN113074130A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116726623A (en) * | 2023-07-04 | 2023-09-12 | 兰州大学 | Portable air filtering device |
| CN116726623B (en) * | 2023-07-04 | 2025-11-07 | 兰州大学 | Portable air filtering device |
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Application publication date: 20210706 |