CN112460050B - Portable electric screw fan - Google Patents
Portable electric screw fan Download PDFInfo
- Publication number
- CN112460050B CN112460050B CN201910841342.9A CN201910841342A CN112460050B CN 112460050 B CN112460050 B CN 112460050B CN 201910841342 A CN201910841342 A CN 201910841342A CN 112460050 B CN112460050 B CN 112460050B
- Authority
- CN
- China
- Prior art keywords
- screw
- circuit
- air
- shell
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- 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
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- 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
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
-
- 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
-
- 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
-
- 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
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a portable electric screw fan which is mainly used for cooling people in summer. The fan comprises a circuit power supply part, an air supply part, a positioning screw, a fastening screw, an upper part shell and a lower part shell; the circuit part is sequentially connected to form a loop, and the loop of the circuit consists of a charging loop, a boosting and stabilizing loop and a driving loop of the motor; the air supply part drives the screw rod to rotate by the motor to promote air to flow from the air inlet to the air outlet in a pressurizing way in a certain space; the beneficial effects are that: the air-out comfort level is good; the noise is low; the outlet air quantity is large; the wind speed can be adjusted steplessly, and the requirements of different people under different situations can be met; the portable electric power steering device is small in size and convenient to carry, and has certain cruising ability.
Description
Technical Field
The invention belongs to the technical field of fans, and relates to the fields of electrician electronics and air pumps.
Background
In the current society, a handheld portable fan has become an important tool for people to cool in summer, and meanwhile, various products such as a silent fan, a flabellum-free fan, a manpower-driven fan and the like are derived, or other functions can be added on the basis of the original functions of the fan.
When people use the fan, some performances of the fan, such as comfort level of the air outlet, air quantity of the air outlet, air speed of the air outlet, noise generated by the fan and the like, are considered.
Considering that the existing fan technology has some defects more or less, for example, blades are used for supplying air, the comfort degree of the air outlet is not good due to the characteristics of the fan technology, and certain potential safety hazards exist; for the flabellum-free fan, although the potential safety hazard and the problem of air-out comfort level are solved, the air-out volume and the air speed of the fan are difficult to improve simultaneously, because the air can inevitably generate vortex due to the internal shape when flowing in the internal cavity of the fan, and then a part of energy and pressure are lost.
Summary of the invention
The embodiment of the invention provides a portable electric screw fan, which can increase the comfort level of air outlet, reduce noise, increase the air outlet quantity and increase portability, and is used for solving the defects in the prior portable fan technology.
The fan consists of a circuit power supply part, an air supply part, a positioning screw, a fastening screw, an upper part shell and a lower part shell.
The circuit part includes: the circuit board, chargeable power, switch knob, charging interface, motor; the chargeable power supply, the switch knob, the charging interface and the motor are connected with the reserved interface position of the circuit board by using wires, so that a complete loop is formed; the circuit board comprises a first boost circuit, a second boost circuit, a charge equalization circuit and a PWM driving circuit; the first booster circuit and the second booster circuit are formed by using an LM2577ADL chip and other elements; the PWM driving circuit is formed by using an XL4013 chip and other elements; the charging interface is connected with the input end of the circuit, namely the input end of the first boost circuit; the three chargeable power supplies are connected in series with the output end of the first boost circuit, the input end of the charge equalization circuit and the input end of the second boost circuit, and the charge equalization circuit has no output end; the output end of the second boost circuit is connected with the input end of the PWM driving circuit, and the output end of the PWM driving circuit is connected with the motor. The circuit part enables the embodiment of the invention to have certain cruising ability under the condition of leaving the power supply, and can adjust the air outlet volume of the fan in a stepless manner, thereby meeting the requirements of different people.
The air supply part includes: the device comprises a screw, a screw shell cover, a bearing, a left bearing end cover, a right bearing end cover, an oil seal ring, a coupler, an air outlet filter screen and an air inlet filter screen; the output shaft of motor is connected with the input end of shaft coupling, and the screw rod is connected to the output of shaft coupling, installs oil sealing ring and left end bearing at the left end of screw rod, and right end bearing is installed to the right-hand member of screw rod, and the part on screw rod and the screw rod is installed in the position that screw rod shell and the screw rod shell lid were reserved, and the left side is installed the left end of screw rod shell with set screw with left side bearing cap, and the right side is installed the right end of screw rod shell cover with set screw with right side bearing cap. The friction part can be reduced as much as possible by the air supply part, so that the local vortex of air in the flowing process is avoided as much as possible, and the embodiment of the invention has a better noise reduction effect by virtue of the characteristics of the bearing.
The motor, the circuit board and the screw shell are connected to the lower shell through positioning screws, and the switch knob and the charging interface are respectively arranged on the upper shell and the lower shell. The air outlet and the air inlet are respectively provided with an air outlet filter screen and an air inlet filter screen. Can reduce the foreign matter through air intake filter screen and air outlet filter screen and get into inside the air supply part, also make the air-out relatively steady, increase air-out comfort level to promote certain security.
Drawings
Fig. 1 is an external view.
Fig. 2 is a cross-sectional view of a front view.
Fig. 3 shows the left side of the coupling and the screw air compressor.
Fig. 4 is a screw air compressor.
Fig. 5 is a circuit portion in a cross-sectional view from above.
Fig. 6 is a schematic view of a screw.
Fig. 7 is a screw cross section.
Fig. 8 is an oblique view of the hidden upper portion housing.
Fig. 9 is a schematic circuit diagram.
Fig. 2 to 5 above: 1. oil seal ring; 2. a coupling; 3. a screw; 4. a screw housing; 5. a screw housing cover; 6. a bearing; 7. a right bearing end cap; 8. a left bearing end cap; 9. a screw tightening screw; 10. a set screw; 11. a motor; 12. a lower housing; 13. an upper housing; 14. a rechargeable battery; 15. a circuit board; 16. an air inlet filter screen; 17. an air outlet filter screen; 18. a charging interface; 19. and (5) a switch knob.
In fig. 9: A. a first booster circuit; B. a charge equalization circuit; C. a second booster circuit; D. PWM driving circuit.
Detailed Description
The present invention will be clearly described below with reference to the accompanying drawings:
the air blowing section will be described with reference to fig. 2, 3, 4, 6, and 7: the output shaft of the motor 11 is connected with the input end of the coupler 2, the output end of the coupler 2 is connected with the left end shaft of the screw 3, the shaft is fixed on the coupler by using the fastening screw 9, the shaft and the screw 3 are integrated, and the motor 11 can drive the screw 3 to rotate together. The screw 3 rotates clockwise as seen from right to left in the space formed by the screw housing 4 and the screw housing cover 5 to rotate clockwise according to fig. 4, 6 and 7, when the screw 3 rotates clockwise, air passing through any cross section of the center of rotation of the screw 3 is pushed by the screw 3 to move from left to right, and air flows through the air inlet to the air outlet in a macroscopic view. An oil seal ring 1 and a left end bearing 6 are arranged at the left end of a screw 3 shaft, a right end bearing 6 is arranged at the right end of the screw 3 shaft, parts on the screw 3 and the screw 3 shaft are arranged at reserved positions of a screw shell 4 and a screw shell cover 5, a left side is provided with a left side bearing end cover 8 which is arranged at the left end of the screw shell 4 by a set screw 10, and a right side is provided with a right side bearing end cover 7 which is arranged at the right end of the screw shell cover 5 by a set screw 10. The parts involved in friction when the screw 3 rotates can be reduced to only the bearing 6 and the oil seal ring 1, and when the proper bearing 6 is selected, the inventive embodiment can greatly reduce noise, the oil seal ring 1, the left bearing end cap 8, the right bearing end cap 7 function to prevent dust and the like of the external environment from contaminating the corrosion bearing 6, and prevent the leakage of lubricating oil of the bearing 6. The air outlet and the air inlet are in a horn shape, so that noise caused by air pressure change from inside to outside and from outside to inside can be reduced as much as possible, the air outlet and the air inlet are respectively provided with an air outlet filter screen 17 and an air inlet filter screen 16, foreign matters can be reduced from entering the air supply part through the air inlet filter screen 16 and the air outlet filter screen 17, the air outlet is relatively stable, the air outlet comfort level is increased, and certain safety is improved.
The internal connection mode is described with reference to fig. 8, wherein the motor 11, the circuit board 15 and the screw housing 4 are connected to the lower housing 12 through the set screw 10, and the switch knob 19 and the charging interface 18 are respectively mounted on the upper housing 13 and the lower housing 12.
The circuit part and the circuit principle are explained in connection with fig. 2, 5 and 9: the chargeable power supply, the switch knob 19, the charging interface 18 and the motor 11 are connected with the reserved interface positions of the circuit board 15 by using wires, so that a complete loop is formed; the circuit board 15 comprises a first booster circuit A, a second booster circuit C and a charge equalization circuit B, PWM driving circuit D; the first booster circuit and the second booster circuit are formed by using an LM2577ADL chip and other elements; the PWM driving circuit D is formed by an XL4013 chip and other elements, and the XL4013 chip can generate pulse width modulated output voltage so as to achieve the aim of changing the effective value of the output voltage; the charging interface 18 is connected with the input end of the circuit, namely the input end of the first boost circuit A, V1 represents the charging interface 18, the regulating rheostat RV1 can regulate the output voltage of the first boost circuit A, and the output voltage of the first boost circuit A needs to be regulated to the charging voltage of the three rechargeable batteries 14 before the circuit is connected; the three chargeable power supplies are connected in series with the output end of the first boost circuit A, the input end of the charge balancing circuit B and the input end of the second boost circuit C, the charge balancing circuit B has no output end, the transformers RV2, 3 and 4 are required to be regulated to be in a state that the voltage stabilizing diodes U2, 3 and 4 are conducted only when the chargeable battery 14 is fully charged before the circuit is connected, when the chargeable battery 14 is not fully charged, current does not flow through the triode, and when the chargeable battery 14 is fully charged, the balancing circuit has a shunt effect to prevent overcharge; the output end of the second boost circuit C is connected with the input end of the PWM driving circuit D, the regulating rheostat RV5 can regulate the output voltage of the second boost circuit C, and the output voltage of the second boost circuit C needs to be regulated to the rated working voltage of the motor 11 before the circuit is connected; the output end of the PWM driving circuit D is connected with the motor 11, the rheostat RV6 is an externally connected switch knob 19, the resistance value of the switch knob 19 can be adjusted steplessly from 0% to 100%, the output voltage of the PWM driving circuit D can be adjusted by adjusting the switch knob 19, and the PWM driving circuit D enables the driving of the motor 11 to be stable and efficient.
In summary, the invention has the following characteristics:
1. The comfort level of the air outlet is good, and natural wind can be better simulated.
2. Due to the nature of the structure, the noise caused by the operation of this inventive embodiment can be greatly reduced.
3. At low noise, higher comfort level possesses great export amount of wind simultaneously.
4. The wind speed can be adjusted steplessly, and the requirements of different people under different situations can be met.
5. The portable electric power steering device is small in size and convenient to carry, and has certain cruising ability.
The above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any person skilled in the art, without creative effort, shall fall within the protection scope of the present invention.
Claims (1)
1. A portable electric screw fan consists of a circuit power supply part, an air supply part, a positioning screw, a fastening screw, an upper part shell and a lower part shell; the circuit power supply section includes: the circuit board, chargeable power, switch knob, charging interface, motor; the air supply part includes: the device comprises a screw, a screw shell cover, a bearing, a left bearing end cover, a right bearing end cover, an oil seal ring, a coupler, an air outlet filter screen and an air inlet filter screen; the device is characterized in that the screw, the bearing, the left bearing end cover, the right bearing end cover, the oil seal ring, the coupler and the rotating shaft of the motor are all arranged on a rotating axis; the air inlet filter screen is characterized in that the air outlet filter screen has certain strength and can filter air; the circuit is characterized in that a chargeable power supply, a switch knob, a charging interface and a motor are connected with reserved interface positions of a circuit board by using wires, so that a complete loop is formed; the circuit board comprises a first boost circuit, a second boost circuit, a charge equalization circuit and a PWM driving circuit; the core elements of the first booster circuit and the second booster circuit are LM2577ADL chips; the core element of the PWM driving circuit is an XL4013 chip; the charging interface is connected with the input end of the circuit, namely the input end of the first boost circuit; the three chargeable power supplies are connected in series with the output end of the first boost circuit, the input end of the charge equalization circuit and the input end of the second boost circuit, and the charge equalization circuit has no output end; the output end of the second booster circuit is connected with the input end of the PWM driving circuit, and the output end of the PWM driving circuit is connected with the motor; the output shaft of the motor is connected with the input end of the coupler, the output end of the coupler is connected with a screw shaft, the left end of the screw shaft is provided with an oil seal ring and a left end bearing, the right end of the screw shaft is provided with a right end bearing, parts on the screw and the screw shaft are arranged at reserved positions of the screw shell and the screw shell cover, the left side is provided with a left bearing end cover to the left end of the screw shell by using a positioning screw, and the right side is provided with a right bearing end cover to the right end of the screw shell cover by using a positioning screw; the motor, the circuit board and the screw shell are connected to the lower shell through positioning screws, and the switch knob and the charging interface are respectively arranged on the upper shell and the lower shell; the air outlet and the air inlet are respectively provided with an air outlet filter screen and an air inlet filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841342.9A CN112460050B (en) | 2019-09-09 | 2019-09-09 | Portable electric screw fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841342.9A CN112460050B (en) | 2019-09-09 | 2019-09-09 | Portable electric screw fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112460050A CN112460050A (en) | 2021-03-09 |
| CN112460050B true CN112460050B (en) | 2024-05-03 |
Family
ID=74807705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910841342.9A Active CN112460050B (en) | 2019-09-09 | 2019-09-09 | Portable electric screw fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112460050B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012007597A (en) * | 2010-06-23 | 2012-01-12 | Atsumi Yazawa | Portable fan |
| CN202326312U (en) * | 2011-12-02 | 2012-07-11 | 黄杰 | Portable charging electric fan |
| CN205605471U (en) * | 2016-05-06 | 2016-09-28 | 深圳市华尼电子有限公司 | No leaf portable power source fan |
| CN106151070A (en) * | 2016-08-31 | 2016-11-23 | 顺德职业技术学院 | Mini-fan |
| CN106762727A (en) * | 2016-12-09 | 2017-05-31 | 刘彩英 | A kind of Portable small fan |
| CN207113098U (en) * | 2017-06-29 | 2018-03-16 | 李雄伟 | A kind of building construction refrigerating fan equipment |
| CN207333248U (en) * | 2017-09-11 | 2018-05-08 | 东莞市润达散热风扇有限公司 | The fan of service life length |
| CN208158146U (en) * | 2018-01-19 | 2018-11-27 | 北京精瑞德诚科技有限公司 | Industrial magnetic portable power supplies |
| CN209294085U (en) * | 2018-08-21 | 2019-08-23 | 深圳和而泰智能控制股份有限公司 | Handheld fan |
-
2019
- 2019-09-09 CN CN201910841342.9A patent/CN112460050B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012007597A (en) * | 2010-06-23 | 2012-01-12 | Atsumi Yazawa | Portable fan |
| CN202326312U (en) * | 2011-12-02 | 2012-07-11 | 黄杰 | Portable charging electric fan |
| CN205605471U (en) * | 2016-05-06 | 2016-09-28 | 深圳市华尼电子有限公司 | No leaf portable power source fan |
| CN106151070A (en) * | 2016-08-31 | 2016-11-23 | 顺德职业技术学院 | Mini-fan |
| CN106762727A (en) * | 2016-12-09 | 2017-05-31 | 刘彩英 | A kind of Portable small fan |
| CN207113098U (en) * | 2017-06-29 | 2018-03-16 | 李雄伟 | A kind of building construction refrigerating fan equipment |
| CN207333248U (en) * | 2017-09-11 | 2018-05-08 | 东莞市润达散热风扇有限公司 | The fan of service life length |
| CN208158146U (en) * | 2018-01-19 | 2018-11-27 | 北京精瑞德诚科技有限公司 | Industrial magnetic portable power supplies |
| CN209294085U (en) * | 2018-08-21 | 2019-08-23 | 深圳和而泰智能控制股份有限公司 | Handheld fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112460050A (en) | 2021-03-09 |
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