CN104100499A - Fan - Google Patents
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- CN104100499A CN104100499A CN201310129241.1A CN201310129241A CN104100499A CN 104100499 A CN104100499 A CN 104100499A CN 201310129241 A CN201310129241 A CN 201310129241A CN 104100499 A CN104100499 A CN 104100499A
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- pneumatic tube
- impeller
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Abstract
The invention relates to a fan, which comprises a base and a spray nozzle, wherein the base comprises an outer casing, a first device, a second device and an air conveying pipe, the first device and the second device can form air flow, the air conveying pipe is provided with a plurality of branch pipes, the first device, the second device, the air conveying pipe and the branch pipes respectively comprise an air inlet and an air outlet, the air inlets of the branch pipes are mutually communicated, the air outlets of the branch pipes are mutually communicated, the air inlet of the air conveying pipe is communicated with the air outlet of the first device, and the air outlet of the air conveying pipe is communicated with the air outlet of the second device.
Description
Technical field
The present invention relates to a kind of fan.Especially, but not in exclusive manner, the present invention relates to a kind of domestic fan, as family expenses desk fan, for increasing air circulation and the Air Flow in indoor, office and other environment.
Background technique
Traditional domestic fan generally includes motor and by motor, is driven one group of blade or the impeller be rotated.This group blade is usually located in cage, and this cage allows air-flow to pass, yet but stops human body to touch the blade of rotation.But in some cases, this kind of fan also exists the risk that human body touches this group rotation blade.
The Chinese patent application that on May 6th, 2009, publication number was CN 101424279A (application number: 200810177844.8) disclose a kind of fan that there is no exposure of blade, described fan comprise pedestal and with the fixing nozzle of pedestal, this pedestal comprises shell and is positioned at the device that is used to form air-flow of shell, described nozzle comprises for receiving the inner passage of air-flow and for launching the relief opening of air-flow, described nozzle limits opening, the air of described nozzle outside is entrainmented by described opening by the air-flow of launching from relief opening, described device comprises impeller housing, be positioned at the impeller of impeller housing and the motor of drives impeller rotary work.Because this kind of fan only uses a vane rotary job, this impeller must could obtain enough air outputs by High Rotation Speed, and the change of team of the high-speed rotary of impeller produces larger noise.
Summary of the invention
The present invention aims to provide a kind of improved fan to overcome above-mentioned defect of the prior art.The object of the invention is to provide-kind of low noise fan.
In order to achieve the above object, the technical solution used in the present invention is: a kind of fan, it is characterized in that, described fan comprises pedestal and the nozzle being connected with pedestal, described pedestal comprises shell, be positioned at the first device that is used to form air-flow and second device of shell, and the pneumatic tube with a plurality of arms, wherein, first device, the second device, pneumatic tube and arm all comprise suction port and air outlet, the suction port of a plurality of arms is interconnected, the air outlet of a plurality of arms is interconnected, the suction port of pneumatic tube is communicated with the air outlet of first device, the air outlet of pneumatic tube is communicated with the air outlet of the second device.
The quantity of described arm is usually located between 2 to 15, is preferably located between 3 to 8.
Described pneumatic tube is usually located in described shell, so that fan is of compact construction.Described pneumatic tube preferably includes a plurality of gas-entered passageways that are communicated with the suction port of the second device, to provide air-flow path for the air inlet of the second device.The quantity of described gas-entered passageway is usually located between 2 to 15, is preferably located between 3 to 8.
Preferably, described pneumatic tube comprises the cavity that is positioned at central part, and described the second device has at least part to be arranged in described cavity.Be conducive to like this make fan compact.In a preferred embodiment, described pneumatic tube comprises the cavity that is positioned at central part and the base plate that is positioned at described cavity bottom, and described the second device has at least part to be arranged in described cavity.
In order to make the compact air input efficiency with improving pneumatic tube of pneumatic tube, a plurality of arms of pneumatic tube can arrange around the second device, also can part arrange around first device.In a preferred embodiment, the second device comprises impeller housing, and a plurality of arms of pneumatic tube arrange around the impeller housing of the second device.
Preferably, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor.
In a preferred embodiment, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises inlet end and outlet side, wherein, the inlet end of described pneumatic tube and the motor casing of first device are connected.
In another preferred embodiment, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises inlet end and outlet side, wherein, the inlet end of described pneumatic tube and the impeller housing of first device are connected.
In yet another preferred embodiment, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises inlet end and outlet side, wherein, the outlet side of described pneumatic tube is connected with the impeller housing of the second device.
In another preferred embodiment, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises and is positioned at inlet end and outlet side, wherein, the outlet side of described pneumatic tube is connected with the motor casing of the second device.
In order to make the compact structure of pedestal, described first device is usually located at the below of the second device.Preferably, described first device is positioned at the below of the second device, and the rotating shaft of the motor of the rotating shaft of the motor of first device and the second device is roughly located on the same line.
Preferably, described first device and the second device all comprise the impeller housing with suction port and air outlet and the impeller that is positioned at impeller housing, described fan also comprises a motor, and the impeller of the impeller of first device and the second device is all driven by this same motor.
In order to reduce the quantity of fan part and to improve its manufacturing efficiency, described pneumatic tube can become integral body integrated with the motor casing of first device, also can become with the impeller housing of the second device whole.
Described nozzle generally includes for receiving the inner passage of air-flow and for sending the relief opening of air-flow.Described nozzle preferably limits opening, and the air of nozzle outside can be entrainmented by described opening by the air-flow of launching from described relief opening.The height of described nozzle is preferably between between 200mm to 800mm, more preferably between between 250mm to 500mm.
Described nozzle preferably includes inner shell part and external casing part, and they limit inner passage and the relief opening of described nozzle jointly.Described external casing part preferably forms local overlapping described inner shell part, can allow so described relief opening be limited between the outer surface of described inner shell part and the internal surface of described external casing part.
Described relief opening is preferably slot-shaped relief opening, its relief opening at the width in outlet port conventionally between 0.5mm to 10mm, preferably between 1mm to 5mm.
Described motor can be alternating current motor, can be also DC Brushless Motor; Described impeller can be centrifugal impeller, can be also mixed flow impeller, is preferably mixed flow impeller.The rotating speed of described impeller is usually located between 800rpm to 7000rpm, is preferably located between 1200rpm to 6500rpm.
Described pedestal can be to be fixedly connected with being connected of nozzle, can be to be also rotationally connected, and can also be to be slidably connected.
Fan of the present invention adopts the pneumatic tube with a plurality of arms, make first device and the second device form the structure of supercharging in parallel, be conducive to significantly improve the boost capability of air-flow, this kind of fan is the in the situation that of the equal air output of output, can greatly reduce used motor and the rotating speed of impeller, thereby effectively reduce the noise producing; In addition, its compact structure of the pneumatic tube of this kind of fan also can transmit efficiently air-flow and provide gas-entered passageway for being used to form the device of air-flow, is conducive to improve the whole efficiency of fan and reduces shared space.
Accompanying drawing explanation
Referring now to accompanying drawing explanation embodiments of the present invention, in the accompanying drawings.
Figure l is the front schematic view of fan of the present invention.
Fig. 2 is the amplification view that the A-A line along Fig. 1 observed from the F direction of Fig. 1 intercepts.
Fig. 3 is the generalized section of amplification of the lower part of the fan that intercepts of the B-B line along Fig. 1.
Fig. 4 is the generalized section of the amplification that intercepts of the C-C line along Fig. 1.
Fig. 5 is the schematic diagram of the pneumatic tube in Fig. 3.
Fig. 6 has shown the another kind of replacing structure of the lower part of the fan in Fig. 3.
Fig. 7 has shown the another kind of replacing structure of the pneumatic tube in Fig. 5.
Embodiment
Figure l is the schematic diagram from the fan of the present invention of device forward observation.As can be seen from Figure 1, fan 100 comprises pedestal 1 and is positioned at the nozzle 2 on pedestal 1; Pedestal 1 comprises base 15 and is positioned at the base portion 13 on base 15.Pedestal 1 has suction port 7,8, and suction port 7,8 is for being formed on the hole array on the shell 14 of pedestal, and air is inhaled in shell 14 from fan outside by suction port 7,8.
Inner passage 9 and relief opening 10 that nozzle 2 comprises toroidal shell 12, by toroidal shell 12, limited; The upper end of the lower end of nozzle 2 and pedestal 1 is fixed, and nozzle 2 defines opening 11.
Pedestal 1 further comprises for allowing user to operate the user interface of fan 100.This user interface comprises a plurality of buttons 16,17,18 of user-operable.
Fig. 2 has shown the internal structure of the nozzle 2 of fan.As can see from Figure 2, the toroidal shell 12 of nozzle 2 comprises inner shell part 45 and external casing part 46, inner shell part 45 comprises the extended surface 50 that the guiding surface 49 that guiding air flow stream is crossed and the air-flow that guiding surface 49 is guided are not flow through, inner shell part 45 and external casing part 46 define inner passage 9 jointly, in inner passage 9, be also provided with a porous slab 47, this porous slab 47 has a plurality of perforation 48, the noise that these perforation 48 can make air-flow pass and can decay in air-flow.Relief opening 10 is positioned near the rear portion of nozzle 2, and is set to before fan, launch air-flow by opening 11.Relief opening 10 has part conventionally in surrounding's extension of opening 11, preferably around opening 11.Relief opening 10 is limited by the outer surface of inner shell the part 45 and lap of the internal surface of external casing part 46 or relative part respectively, and the outlet of relief opening 10 preferably has relatively constant width, and its width is between 0.5mm to 10mm.In the present embodiment, l.2mm the width of its outlet is about.
Fig. 3 and Fig. 4 have shown the internal structure of pedestal 1, and Fig. 5 is the schematic diagram of the pneumatic tube 5 in Fig. 3.From Fig. 3 to Fig. 5, can find out, in the shell 14 of base portion 13, be provided with the first device 3, the second device 4 and the pneumatic tube 5 that are used to form air-flow, wherein, first device 3 is positioned at the below of the second device 4.First device 3 comprises impeller housing 19, is positioned at the impeller 20 of impeller housing 19, the motor 21 of drives impeller 20 rotary works and for the motor casing 22 of fixing motor 21.The second device 4 comprises impeller housing 24, be positioned at the impeller 25 of impeller housing 24, the motor 26 of drives impeller 25 rotary works and for the motor casing 27 of fixing motor 26.First device 3 comprises that suction port 31 and air outlet 32, the second devices 4 comprise suction port 33 and air outlet 34.
Pneumatic tube 5 comprise 3 42,3 arms 42 of arm that vertically arrange roughly wound impeller housing 24 arrange, each arm 42 comprises inner passage 44, suction port and relief opening.The suction port of 3 arms 42 of pneumatic tube 5 is interconnected, and the air outlet of 3 arms 42 of pneumatic tube 5 is also interconnected.Pneumatic tube 5 also comprises 3 gas-entered passageways 41, and each gas-entered passageway 41 is communicated with the suction port 33 of the second device 4.Pneumatic tube 5 also comprises that the part that has of cavity 43, the second devices 4 that are positioned at central part is arranged in cavity 43.Pneumatic tube 5 comprises the inlet end 52 with suction port 29 and the outlet side 53 with air outlet 30, the inlet end 52 of pneumatic tube 5 is fixing with the motor casing of first device 3 22, and the outlet side 53 of pneumatic tube 5 is fixed and contacts with the internal surface of nozzle 2 by rubber seal 58 with the impeller housing 24 of the second device 4.In Fig. 3, can be clear that, the suction port 29 of pneumatic tube 5 is communicated with the air outlet 32 of first device 3, and the air outlet 30 of pneumatic tube 5 is communicated with the air outlet 34 of the second device.
In the present embodiment, the formed air-flow of first device 3 and the second device 4 formed air-flows converge near the air outlet 30 of pneumatic tube 5, make first device 3 and the second device 4 form the structure of supercharging in parallel.The fan of this kind of structure is with respect to the fan of the single impeller of existing employing, and the boosting capability of its air-flow significantly strengthens.This kind of fan is in the situation that obtaining equal air output, and the rotating speed of its impeller can significantly reduce, thereby can effectively reduce produced noise.
In Fig. 3, easily find out, the compact structure of the pneumatic tube 5 of this kind of fan, the air-flow that first device 3 can be exported is transported near the air outlet of the second device 4, can also utilize 3 gas-entered passageways 41 of pneumatic tube 5 that the air-flow of air inlet is provided to the second device 4.The use of this kind of pneumatic tube 5, is conducive to make the compact structure of whole fan and carries out two parallel runnings that are used to form the device of air-flow.
Motor 21 is contained in motor casing 22.Motor casing 22 comprises upper part 35 and lower part 36.The rotating shaft 23 of motor 21 is through the hole that is formed on the lower part 36 of motor casing 22, to allow impeller 20 to be connected in rotating shaft 23.The upper part 35 of motor casing 22 also comprises retaining ring 54 and a plurality of connecting rod 55, and the retaining ring 54 of motor casing 22 is fixing with impeller housing 19.
Motor 26 is contained in motor casing 27.Motor casing 27 comprises upper part 37 and lower part 38.The rotating shaft 28 of motor 26 is through the hole that is formed on the lower part 38 of motor casing 27, to allow impeller 25 to be connected in rotating shaft 28.The upper part 37 of motor casing 27 also comprises retaining ring 56 and a plurality of connecting rod 57, and the retaining ring 56 of motor casing 27 is fixing with impeller housing 24.
In the present embodiment, impeller 20 and impeller housing 19 are configured as when impeller 20 and motor casing 22 are supported by impeller housing 19, the blade tips of impeller 20 very approaches the internal surface of impeller housing 19, but does not touch this internal surface, and impeller 20 is roughly coaxial with impeller housing 19.Equally, impeller 25 and impeller housing 24 are configured as when impeller 25 and motor casing 27 are supported by impeller housing 24, the blade tips of impeller 25 very approaches the internal surface of impeller housing 24, but does not touch this internal surface, and impeller 25 is roughly coaxial with impeller housing 24.
On impeller housing 19,24, be all provided with cable punching hole (not shown in FIG.), on a connecting rod 55 of motor casing 22 and on a connecting rod 57 of motor casing 27, be also all provided with cable punching hole (not shown in FIG.), cable punching hole on impeller housing 19 is aimed at cable can be passed with the cable punching hole on connecting rod 55, cable punching hole on same impeller housing 24 is aimed at cable can be passed with the cable punching hole on connecting rod 57, facilitates cable to be connected respectively to motor 21 and motor 26 from same circuit arrangement 39.In the present embodiment, motor casing 22,27, impeller housing 19,24, impeller 20,25 and pneumatic tube 5 are preferably formed by plastics, and circuit arrangement 39 has two output interfaces that the electricity cable for motor 21,26 connects respectively.
With reference to figure 1, base 15 is for engaging the surface at fan 100 places.Base portion 13 comprises user interface and circuit arrangement 39, and circuit arrangement 39 is for responding the various operations of user interface.Pedestal 1 also comprises the swing mechanism for base portion 13 is swung back and forth with respect to base 15, and this swing mechanism comprises syncmotor 40, and the button 18 that the operation of swing mechanism is pressed user interface by circuit arrangement 39 response users is controlled.Hunting range is preferably between 60 ° and 120 °, and swing mechanism is set to 3 to 6 deflection periods of execution per minute.For supplying power to the main power line (not drawing) of fan, through the hole being formed on base 15, extend.
In the present embodiment, motor the 21, the 26th, DC Brushless Motor, the rotating speed of motor can change by circuit arrangement 39 response user operation knobs 17.The rotating speed of motor 21,26 is preferably in the scope of 1500rpm to 5000rpm.
In the present embodiment, impeller housing 19 is supported with shell 14 all-in-one-piece steps 59.Preferably, between impeller housing 19 and step 59, arrange and there is flexible a plurality of supporting member.Be conducive to decay first device 3 and the second device 4 vibrations that produce of this kind of supporting member are transmitted to shell 14 or nozzle 2.
In order to operate fan 100, user presses the button 16 of user interface, responds this operation, and circuit arrangement 39 activates motor 21,26 with rotary blade 20,25.The rotation of impeller 20,25 makes air enter in the shell 14 of pedestal 1 by suction port 7,8.User can carry out by handling knob 17 rotating speed of governor motor 21,26, thus the speed that regulates air to enter from the suction port 31 of first device 3 and the suction port 33 of the second device 4.Pneumatic tube 5 receives air-flow the 30 places output in air outlet of exporting from first device 3 at suction port 29 places, this air-flow converges with the second device 4 air-flows of exporting near air outlet 30, is then fed in nozzle 2.
In nozzle 2, air-flow divides two strands in the inner passage 9 of nozzle, to advance.The air-flow of advancing in inner passage 9 is deflated 10, mouth and launches.The air-flow of launching from relief opening 10 is through opening 11, nozzle 2 part air is around entrainmented by opening 11 by the air-flow of being launched from relief opening 10 simultaneously, forms the total air flow of launching forward from nozzle 2 like this from the air-flow of relief opening 10 transmittings and the combination of the air-flow being entrainmented.
Fig. 6 has shown the another kind of replacing structure of the lower part of the fan in Fig. 3.As can be seen from Figure 6, the present embodiment is similar to the embodiment shown in Fig. 3, and just the structure of pneumatic tube 5 is different.In the present embodiment, pneumatic tube 5 is on the pneumatic tube shown in Fig. 3, to have increased a base plate 51, and this base plate 51 is positioned at the bottom of cavity 43.The pneumatic tube 5 with base plate 51 is easily connected with the motor casing 22 of first device 3.
Fig. 7 has shown the another kind of replacing structure of the pneumatic tube in Fig. 5.Pneumatic tube 5 shown in Fig. 7 is different with the shape of the pneumatic tube 5 shown in Fig. 5.In Fig. 7, the cross section of the gas-entered passageway 41 of pneumatic tube 5 is roughly ellipse, and the pore size of the arm 42 of pneumatic tube 5 vertically changes; And in Fig. 5, the cross section of the gas-entered passageway 41 of pneumatic tube 5 is roughly rectangle, the pore size of the arm 42 of pneumatic tube 5 is vertically constant.
The detailed description that the present invention is not limited to provide above.Those skilled in the art should be understood that deformation program of the present invention.For example, the entire length of pneumatic tube 5 can change; Length and the shape of the arm 42 of pneumatic tube 5 can change; Shape and the size of the cavity 43 of pneumatic tube 5 can change; Shape and the size of the base plate 51 of pneumatic tube 5 can change.Again for example, pneumatic tube 5 can change with the Placement of first device 3 or the second device 4, and pneumatic tube 5 also can change with the Placement of shell 14 or nozzle.
Claims (10)
1. a fan, it is characterized in that, described fan comprises pedestal and the nozzle being connected with pedestal, described pedestal comprises shell, is positioned at the first device that is used to form air-flow and second pneumatic tube that installs and have a plurality of arms of shell, wherein, first device, the second device, pneumatic tube and arm all comprise suction port and air outlet, the suction port of a plurality of arms is interconnected, the air outlet of a plurality of arms is interconnected, the suction port of pneumatic tube is communicated with the air outlet of first device, and the air outlet of pneumatic tube is communicated with the air outlet of the second device.
2. fan as claimed in claim 1, is characterized in that, described pneumatic tube also comprises a plurality of gas-entered passageways that are communicated with the suction port of the second device.
3. fan as claimed in claim 1, is characterized in that, described pneumatic tube also comprises the cavity that is positioned at central part, and described the second device has at least part to be arranged in described cavity.
4. fan as claimed in claim 1, is characterized in that, described pneumatic tube also comprises the cavity that is positioned at central part and the base plate that is positioned at described cavity bottom, and described the second device has at least part to be arranged in described cavity.
5. fan as claimed in claim 1, is characterized in that, described a plurality of arms arrange around the second device.
6. the fan as described in one of claim 1 to 5, it is characterized in that, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises inlet end and outlet side, wherein, the inlet end of described pneumatic tube and the motor casing of first device are connected.
7. the fan as described in one of claim 1 to 5, it is characterized in that, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises inlet end and outlet side, wherein, the inlet end of described pneumatic tube and the impeller housing of first device are connected.
8. the fan as described in one of claim 1 to 5, it is characterized in that, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises inlet end and outlet side, wherein, the outlet side of described pneumatic tube is connected with the impeller housing of the second device.
9. the fan as described in one of claim 1 to 5, it is characterized in that, described first device and the second device all comprise having the motor of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, described pneumatic tube comprises and is positioned at inlet end and outlet side, wherein, the outlet side of described pneumatic tube is connected with the motor casing of the second device.
10. the fan as described in one of claim 1 to 5, it is characterized in that, described first device and the second device all comprise having the motor with rotating shaft of the impeller housing of suction port and air outlet, the impeller that is positioned at impeller housing, drives impeller rotary work and for the motor casing of fixing motor, wherein, first device is positioned at the below of the second device, and the rotating shaft of the motor of the rotating shaft of the motor of first device and the second device is roughly located on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129241.1A CN104100499A (en) | 2013-04-15 | 2013-04-15 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310129241.1A CN104100499A (en) | 2013-04-15 | 2013-04-15 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104100499A true CN104100499A (en) | 2014-10-15 |
Family
ID=51668954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310129241.1A Pending CN104100499A (en) | 2013-04-15 | 2013-04-15 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104100499A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021083283A1 (en) * | 2019-10-31 | 2021-05-06 | 应辉 | Fan |
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|---|---|---|---|---|
| CN102011755A (en) * | 2010-12-02 | 2011-04-13 | 任文华 | Fan device without fan blade |
| CN102278318A (en) * | 2011-08-16 | 2011-12-14 | 宁海县万盛电器有限公司 | Bladeless fan for low rotating speed supercharging impeller |
| CN202381366U (en) * | 2011-11-09 | 2012-08-15 | 余姚市华昌电器制造有限公司 | Bladeless fan |
| KR20120104784A (en) * | 2011-03-14 | 2012-09-24 | 주식회사 송산특수엘리베이터 | Safety fan having air nozzle |
| CN203146376U (en) * | 2013-04-15 | 2013-08-21 | 任文华 | Fan |
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2013
- 2013-04-15 CN CN201310129241.1A patent/CN104100499A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011755A (en) * | 2010-12-02 | 2011-04-13 | 任文华 | Fan device without fan blade |
| KR20120104784A (en) * | 2011-03-14 | 2012-09-24 | 주식회사 송산특수엘리베이터 | Safety fan having air nozzle |
| CN102278318A (en) * | 2011-08-16 | 2011-12-14 | 宁海县万盛电器有限公司 | Bladeless fan for low rotating speed supercharging impeller |
| CN202381366U (en) * | 2011-11-09 | 2012-08-15 | 余姚市华昌电器制造有限公司 | Bladeless fan |
| CN203146376U (en) * | 2013-04-15 | 2013-08-21 | 任文华 | Fan |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021083283A1 (en) * | 2019-10-31 | 2021-05-06 | 应辉 | Fan |
| US11835050B2 (en) | 2019-10-31 | 2023-12-05 | Hui Ying | Fan |
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Application publication date: 20141015 |