CN112412874A - Turbofan with impeller structure capable of reducing air noise - Google Patents
Turbofan with impeller structure capable of reducing air noise Download PDFInfo
- Publication number
- CN112412874A CN112412874A CN202011421515.0A CN202011421515A CN112412874A CN 112412874 A CN112412874 A CN 112412874A CN 202011421515 A CN202011421515 A CN 202011421515A CN 112412874 A CN112412874 A CN 112412874A
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- blade
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- external
- connecting rod
- assembly
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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
- 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
- F04D29/30—Vanes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal 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
- 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
- F04D29/287—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps with adjusting means
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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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Abstract
The invention relates to the technical field of breathing machine accessories, in particular to a turbofan with an impeller structure and an air noise reducing function. The turbine fan with the impeller structure having the air noise reducing function is movably assembled with the external assembling cylinder with the external lateral assembling groove at the outer side, the internal assembling cylinder communicated with the inside of the lateral assembling groove is arranged at the inner side of the external assembling cylinder, the external centrifugal blade convenient to assemble, disassemble and adjust is fixedly connected with the external centrifugal blade through the internal assembling cylinder by the bolt at the outer side of the external assembling cylinder, and the external centrifugal blade can be folded and unfolded and the installation position can be adjusted as required, so that the storage and the use of the external centrifugal blade are greatly facilitated; the movable folding bracket is locked, fixed and disassembled by threads through the internal locking nut at the inner side end of the internal assembly cylinder, the operation is simple and convenient, and the assembly firmness is greatly improved; the shock absorption and the protection performance can be improved while the assembling stability is ensured.
Description
Technical Field
The invention relates to the technical field of breathing machine accessories, in particular to a turbofan with an impeller structure and an air noise reducing function.
Background
In modern clinical medicine, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia and breathing management during major surgery, respiratory support therapy and emergency resuscitation as an effective means for manually replacing the function of spontaneous ventilation, and has a very important position in the modern medical field. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications and save and prolong the life of a patient.
The ventilator is divided into a Controlled Mechanical Ventilation (CMV) and an Auxiliary Mechanical Ventilation (AMV) according to the type of use, and is powered by an internal centrifugal fan, which mainly consists of a volute, an impeller and a motor. Centrifugal fans use high-speed rotation to generate centrifugal force, which is a virtual force and is an inertial embodiment that moves a rotating object away from its center of rotation. In newton mechanics, it has been used to describe two different concepts: an inertial force, a balance of centripetal forces, observed in a non-inertial reference frame.
Centrifugal force (centrifugal force) is a virtual force, which is a manifestation of inertia that moves a rotating object away from its center of rotation. In newton mechanics, it has been used to describe two different concepts: an inertial force, a balance of centripetal forces, observed in a non-inertial reference frame. Under Lagrangian mechanics, centrifugal force is sometimes used to describe a generalized force at some generalized coordinate. Its effect is only that under a rotating reference frame (non-inertial reference frame), newton's law of motion can still be used.
The centrifuge is a machine for separating components from solid and liquid particles or a mixture of liquid and liquid by using centrifugal force. The centrifuge is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are insoluble with each other in emulsion (for example, cream is separated from milk); it can also be used to remove liquids from wet solids, such as by spin drying clothes in a washing machine; the special overspeed tubular separator can also separate gas mixtures with different densities; some settling centrifuges can also grade solid particles according to density or granularity by utilizing the characteristic that solid particles with different densities or granularities have different settling speeds in liquid.
Current centrifugal fan simple structure, the last blade of centrifugal fan is mostly integrative fixed knot structure, can't change its centrifugal blade position as required, leads to it can't fold and accomodate, accomodates and load and unload very inconvenient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that exists among the above-mentioned background art, provide a turbine fan of modified impeller structure that has the function of reducing the gas and making an uproar, solve the blade on the present centrifugal fan and mostly be integrative fixed knot structure, can't change its centrifugal blade position as required, lead to its unable folding storage, accomodate and load and unload very inconvenient problem.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a turbofan of impeller structure with reduce gas and make an uproar function, includes that driving motor and activity cup joint the outside assembly section of thick bamboo in the driving motor outside, outside assembly section of thick bamboo lateral surface on seted up a plurality of side direction assembly recesses, outside assembly section of thick bamboo outside be located side direction assembly recess periphery and be provided with outside centrifugal blade, side direction assembly recess medial surface lower extreme seted up inboard flexible through-hole, the inboard arcwall face of outside assembly section of thick bamboo be located inboard flexible through-hole inboard and be fixed with a body structure inside assembly section of thick bamboo, outside centrifugal blade insert inside assembly section of thick bamboo from inboard flexible through-hole through the activity folding support on the inboard outer wall and be connected with outside assembly section of thick bamboo, outside assembly section of thick bamboo upper surface set up the inside top installation draw-in groove that is linked together.
The outer centrifugal blade comprises an inner side overturning blade and an outer side folding blade, the inner side connecting end of the inner side overturning blade and the inner side connecting end of the outer side folding blade are fixedly welded with a matched inner side movable support, and the inner side overturning blade and the outer side folding blade are movably connected through a transverse rotating shaft in the inner side movable support.
The movable folding support comprises a first guide cover welded and fixed on the inner side surface of the inner turnover blade, a second guide cover welded and fixed on the inner side surface of the outer folding blade, a first guide connecting rod inserted in the first guide cover, a second guide connecting rod inserted in the second guide cover and a third guide connecting rod inserted in the inner assembly cylinder, an integrated structure movable mounting support is arranged between the connecting end of the first guide connecting rod and the second guide connecting rod and between the connecting end of the first guide connecting rod and the connecting end of the third guide connecting rod, movable rotating shafts in the movable mounting support are movably connected between the first guide connecting rod and the second guide connecting rod and between the first guide connecting rod and the third guide connecting rod, and an integrated structure external thread locking rod is fixedly connected to the axial direction of the top end of the inner side of the third guide connecting rod.
The top end of the inner side of the inner assembling cylinder is movably assembled with an inner locking nut matched with the outer thread locking rod.
The inboard upset blade inboard end fixed cup joint with side direction assembly groove matched with side direction rubber shock attenuation dress is supporting, inboard upset blade medial surface set up the interior assembly groove of the inboard assembly strip of built-in integrative structure, side direction rubber shock attenuation assembly cover inside set up upper end open-ended inside mounting groove, side direction rubber shock attenuation dress supporting through inside mounting groove cover on inboard assembly strip with inboard upset blade medial extremity fixed connection.
The connecting end of the inner side turnover blade and the outer side folding blade is provided with an inclined assembling surface for improving the assembling limiting capacity.
The inner side of the inner side turnover blade and the inner side of the outer side folding blade are positioned at the connecting end of the movable folding bracket, and an inner side storage chute is formed.
And a lateral limiting plate for improving lateral supporting force is arranged on the outer side surface of the outer side folding blade far away from the inner side movable support.
The invention has the beneficial effects that:
(1) the turbine fan with the impeller structure having the air noise reducing function is movably assembled with the external assembling cylinder with the external lateral assembling groove at the outer side, the internal assembling cylinder communicated with the inside of the lateral assembling groove is arranged at the inner side of the external assembling cylinder, the external centrifugal blade convenient to assemble, disassemble and adjust is fixedly connected with the external centrifugal blade through the internal assembling cylinder by the bolt at the outer side of the external assembling cylinder, and the external centrifugal blade can be folded and unfolded and the installation position can be adjusted as required, so that the storage and the use of the external centrifugal blade are greatly facilitated;
(2) the external centrifugal blades comprise an inner side overturning blade and an outer side folding blade which are movably assembled by an inner side movable support, the folding and unfolding of the inner side overturning blade and the outer side folding blade are controlled by the movable folding support, and the movable folding support is locked, fixed and disassembled by threads through an internal locking nut at the inner side end of the internal assembly cylinder, so that the operation is simple and convenient, and the assembly firmness is greatly improved;
(3) the inboard end of the inboard upset blade is fixed to be cup jointed the side direction rubber shock attenuation dress and is supporting, inserts the inboard upset blade of inside fixed mounting of side direction assembly recess through the side direction rubber shock attenuation dress is supporting, can promote shock attenuation nature and barrier propterty when guaranteeing assembly stability.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic view of the structure of an outer centrifugal blade according to the present invention.
Fig. 3 is a schematic structural view of the movable folding bracket of the invention.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Fig. 1, a turbofan with impeller structure who reduces air noise function that fig. 2 and fig. 3 show, cup joint the outside assembly section of thick bamboo 2 in the driving motor 1 outside including driving motor 1 and activity, 20 side direction assembly grooves 3 have been seted up on the 2 lateral surfaces of outside assembly section of thick bamboo, the outside assembly section of thick bamboo 2 outside is located the periphery of side direction assembly grooves 3 and is provided with outside centrifugal blade 4, inboard flexible through-hole has been seted up to side direction assembly grooves 3 medial surface lower extreme, 2 inboard arcwall faces of outside assembly section of thick bamboo are located inboard flexible through-hole inboard and are fixed with a body structure inside assembly section of thick bamboo 6, outside centrifugal blade 4 inserts inside assembly section of thick bamboo 6 and outside assembly section of thick bamboo 2 through the flexible folding support of activity on the inboard outer wall from inboard flexible through-hole and are connected, the inside top installation draw-in groove that.
Example (b): a folding mode, wherein an inner lock nut 17 is firstly rotated to cause a third guide link 14 to extend outwards, at this time, a movable mounting bracket 15 between a first guide link 12 and a second guide link 13 moves to the connecting end of an inner side turning blade 7 and an outer side folding blade 8, the movable mounting bracket 15 between the first guide link 12 and the third guide link 14 moves to the inside of the lateral assembling groove 3, at this time, the inner side turning blade 7 and the outer side folding blade 8 are folded, the inner side turning blade 7 and the outer side folding blade 8 are turned upwards, and then the inner side turning blade 7 and the outer side folding blade 8 rotate along the movable folding bracket, so that the lower ends of the inner side turning blade 7 and the outer side folding blade 8 are inserted into the top assembling clamping groove; conversely, the inner lock nut 17 is rotated in the reverse direction, and the movable mounting bracket 15 is separated from the connecting end, so that the movable mounting bracket can be fixed and limited, and the inner flip blade 7 and the outer folding blade 8 are fixed into an integral blade structure.
Further, in order to match with the movable connection, the external centrifugal blade 4 comprises an inner side turning blade 7 and an outer side folding blade 8, the inner side connecting end of the inner side turning blade 7 and the inner side connecting end of the outer side folding blade 8 are welded and fixed with a matched inner side movable support 9, and the inner side turning blade 7 and the outer side folding blade 8 are movably connected through a transverse rotating shaft in the inner side movable support 9.
Further, in order to cooperate with the limiting, fixing, folding and containing, the movable folding bracket comprises a first guide cover 10 welded and fixed on the inner side surface of the inner turnover blade 7, a second guide cover 11 welded and fixed on the inner side surface of the outer folding blade 8, a first guide connecting rod 12 inserted in the first guide cover 10, a second guide connecting rod 13 inserted in the second guide cover 11 and a third guide connecting rod 14 inserted in the inner assembling cylinder 6, an integral movable mounting bracket 15 is respectively arranged between the connecting ends of the first guide connecting rod 12 and the second guide connecting rod 13 and between the connecting ends of the first guide connecting rod 12 and the third guide connecting rod 14, the first guide connecting rod 12 and the second guide connecting rod 13 and between the first guide connecting rod 12 and the third guide connecting rod 14 are movably connected through a movable rotating shaft in the movable mounting bracket 15, and an integral external thread locking rod 16 is axially and fixedly connected at the top end of the inner side of the third guide connecting rod 14, further, in order to facilitate the thread locking fixation, the inner top end of the inner assembling cylinder 6 is movably assembled with an inner locking nut 17 matched with the external thread locking rod 16.
Further, in order to promote assembly stability and shock attenuation nature, the inboard end of inboard upset blade 7 is fixed to be cup jointed with the side direction rubber shock attenuation suit of side direction assembly groove 3 matched with 18, the inside assembly groove of the inboard assembly strip 19 of built-in integrative structure is seted up to inboard upset blade 7 medial surface, the inside mounting groove of upper end open-ended is seted up to the side direction rubber shock attenuation suit 18 medial surface, the side direction rubber shock attenuation suit 18 is through inside mounting groove cover on inboard assembly strip 19 with inboard upset blade 7 medial end fixed connection.
Example (b): inboard assembly strip 19 of inboard upset blade 7 inboard inserts the supporting 18 insides of side direction rubber shock attenuation dress from inside mounting groove upper end opening, thereby make the supporting 18 fixed cup joints in the 19 outsides of inboard assembly strip, then insert the supporting 18 of side direction rubber shock attenuation dress inside 3 side direction assembly grooves, thereby fixed grafting, it sets up the meshing tooth's socket to connect the face and 3 inboard connection faces of side direction assembly groove in the supporting 18 outsides of side direction rubber shock attenuation dress, like this alright promote its assembly stability and firmness.
Further, in order to promote assembly stability and leakproofness, inboard flip blade 7 and the 8 link in the outside folding blade have the oblique assembly surface that is used for promoting the spacing ability of assembly, and further, occupy in order to reduce the exterior space, inboard flip blade 7 and the 8 medial surfaces in the folding support link in the outside folding blade 8 have seted up inboard storage chute 20, and further, in order to promote the holding power of leeward side, outside folding blade 8 keeps away from and has the side direction limiting plate 21 that is used for promoting the side direction holding power on the inboard movable support 9 lateral surface.
The turbine fan with the impeller structure having the air noise reducing function is movably assembled with the external assembling cylinder 2 of the external lateral assembling groove 3 at the outer side, the internal assembling cylinder 6 communicated with the inside of the lateral assembling groove 3 is arranged at the inner side of the external assembling cylinder 2, the external centrifugal blades 4 convenient to assemble, disassemble and adjust are fixedly connected with the outer side of the external assembling cylinder 2 through the internal assembling cylinder 6 through bolts, the external centrifugal blades 4 can be folded, unfolded and the installation position can be adjusted according to needs, and the storage and the use of the external centrifugal blades are greatly facilitated; the external centrifugal blades 4 comprise an inner side overturning blade 7 and an outer side folding blade 8 which are movably assembled by an inner side movable support 9, the folding and unfolding of the inner side overturning blade 7 and the outer side folding blade 8 are controlled by the movable folding support, and the movable folding support is locked, fixed and detached by threads through an internal locking nut 17 at the inner side end of the internal assembly cylinder 6, so that the operation is simple and convenient, and the assembly firmness is greatly improved; the lateral rubber damping assembly is fixedly sleeved with the lateral rubber damping assembly matching 18 at the inner side end of the inner turnover blade 7, the lateral rubber damping assembly matching 18 is inserted into the lateral assembly groove 3 to fixedly install the inner turnover blade 7, and the damping performance and the protection performance can be improved while the assembly stability is ensured.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. The utility model provides a turbofan with reduce impeller structure of air noise function, includes that driving motor (1) cup joints an external assembly section of thick bamboo (2) in driving motor (1) outside with the activity, characterized by: the lateral surface of the external assembly cylinder (2) is provided with a plurality of lateral assembly grooves (3), the outer side of the external assembly cylinder (2) is located at the periphery of the lateral assembly grooves (3) and is provided with external centrifugal blades (4), the lower end of the inner side surface of each lateral assembly groove (3) is provided with an inner side telescopic through hole, the inner side arc-shaped surface of the external assembly cylinder (2) is located at the inner side telescopic through hole and is fixedly provided with an internal assembly cylinder (6) of an integrated structure, the external centrifugal blades (4) are connected with the external assembly cylinder (2) by inserting the inner side telescopic through holes into the internal assembly cylinder (6) from the inner side telescopic through holes through movable folding supports on the inner side outer wall, and the upper surface of the external assembly cylinder (2) is provided with a top mounting clamping groove communicated.
2. The turbofan according to claim 1, wherein the impeller structure having an air noise reduction function comprises: outside centrifugal blade (4) including inboard upset blade (7) and outside folding blade (8), inboard upset blade (7) and outside folding blade (8) inboard link welded fastening have matched with inboard movable support (9), inboard upset blade (7) and outside folding blade (8) are through the horizontal pivot swing joint in inboard movable support (9).
3. The turbofan according to claim 2, wherein the impeller structure having an air noise reduction function comprises: the movable folding bracket comprises a first guide cover (10) welded and fixed on the inner side surface of the inner turnover blade (7), a second guide cover (11) welded and fixed on the inner side surface of the outer folding blade (8), a first guide connecting rod (12) inserted in the first guide cover (10), a second guide connecting rod (13) inserted in the second guide cover (11) and a third guide connecting rod (14) inserted in the inner assembly cylinder (6), wherein an integrated movable mounting bracket (15) is arranged between the connecting ends of the first guide connecting rod (12) and the second guide connecting rod (13) and between the connecting ends of the first guide connecting rod (12) and the third guide connecting rod (14), and the first guide connecting rod (12) and the second guide connecting rod (13) and between the first guide connecting rod (12) and the third guide connecting rod (14) are movably connected through a movable rotating shaft in the movable mounting bracket (15), the top end of the inner side of the third guide connecting rod (14) is axially and fixedly connected with an external thread locking rod (16) with an integral structure.
4. The turbofan according to claim 3, wherein the impeller structure having an air noise reduction function comprises: the top end of the inner side of the inner assembling cylinder (6) is movably assembled with an inner lock nut (17) matched with the outer thread locking rod (16).
5. The turbofan according to claim 2, wherein the impeller structure having an air noise reduction function comprises: inboard upset blade (7) inboard end fixed cup joint with side direction assembly groove (3) matched with side direction rubber shock attenuation dress complete (18), inboard upset blade (7) medial surface set up the interior assembly groove of built-in integrative structure inboard assembly strip (19), the side direction rubber shock attenuation dress complete (18) medial surface set up upper end open-ended inside mounting groove, the side direction rubber shock attenuation dress complete (18) through inside mounting groove cover on inboard assembly strip (19) with inboard upset blade (7) inboard end fixed connection.
6. The turbofan according to claim 2, wherein the impeller structure having an air noise reduction function comprises: the connecting end of the inner side turnover blade (7) and the outer side folding blade (8) is provided with an inclined assembling surface for improving the assembling limiting capacity.
7. The turbofan according to claim 3, wherein the impeller structure having an air noise reduction function comprises: the inner side surfaces of the inner side turnover blade (7) and the outer side folding blade (8) are positioned at the connecting end of the movable folding bracket, and an inner side storage chute (20) is formed.
8. The turbofan according to claim 2, wherein the impeller structure having an air noise reduction function comprises: the lateral side of the outer side folding blade (8) far away from the inner side movable support (9) is provided with a lateral limiting plate (21) for improving lateral supporting force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011421515.0A CN112412874B (en) | 2020-12-08 | 2020-12-08 | Turbofan with impeller structure capable of reducing air noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011421515.0A CN112412874B (en) | 2020-12-08 | 2020-12-08 | Turbofan with impeller structure capable of reducing air noise |
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| Publication Number | Publication Date |
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| CN112412874A true CN112412874A (en) | 2021-02-26 |
| CN112412874B CN112412874B (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011421515.0A Active CN112412874B (en) | 2020-12-08 | 2020-12-08 | Turbofan with impeller structure capable of reducing air noise |
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Citations (7)
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|---|---|---|---|---|
| US6213716B1 (en) * | 1999-11-19 | 2001-04-10 | King Of Fans, Inc. | Folding fan |
| AU2010100481A4 (en) * | 2010-05-18 | 2010-06-17 | Pan Air Electric Co., Ltd. | Fan device having simultaneously foldable blades |
| CN202732470U (en) * | 2012-06-25 | 2013-02-13 | 徐冰倩 | Dustproof folding electric fan |
| CN203770162U (en) * | 2013-11-07 | 2014-08-13 | 河海大学 | Foldable and telescopic fan |
| KR20150083514A (en) * | 2014-01-10 | 2015-07-20 | 배범진 | Solar Cell Fan Ventilator |
| CN109826804A (en) * | 2017-11-23 | 2019-05-31 | 中山市风美照明科技有限公司 | A kind of folding Safety ceiling fan of flabellum |
| CN211449182U (en) * | 2020-01-13 | 2020-09-08 | 绍兴上虞鼎鑫通风设备有限公司 | Connecting structure of fan blade and impeller |
-
2020
- 2020-12-08 CN CN202011421515.0A patent/CN112412874B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6213716B1 (en) * | 1999-11-19 | 2001-04-10 | King Of Fans, Inc. | Folding fan |
| AU2010100481A4 (en) * | 2010-05-18 | 2010-06-17 | Pan Air Electric Co., Ltd. | Fan device having simultaneously foldable blades |
| CN202732470U (en) * | 2012-06-25 | 2013-02-13 | 徐冰倩 | Dustproof folding electric fan |
| CN203770162U (en) * | 2013-11-07 | 2014-08-13 | 河海大学 | Foldable and telescopic fan |
| KR20150083514A (en) * | 2014-01-10 | 2015-07-20 | 배범진 | Solar Cell Fan Ventilator |
| CN109826804A (en) * | 2017-11-23 | 2019-05-31 | 中山市风美照明科技有限公司 | A kind of folding Safety ceiling fan of flabellum |
| CN211449182U (en) * | 2020-01-13 | 2020-09-08 | 绍兴上虞鼎鑫通风设备有限公司 | Connecting structure of fan blade and impeller |
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| CN112412874B (en) | 2021-05-28 |
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Address after: 310052 Room 201, 2 / F, building 5, No. 1180, Bin'an Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Beifeng Technology Co., Ltd. Address before: 310052 Room 201, 2 / F, building 5, No. 1180, Bin'an Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Beifeng Technology Co.,Ltd. |
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Effective date of registration: 20220815 Address after: 310000 Room 201, 2 / F, building 5, No. 1180, Bin'an Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Beifeng Technology Co., Ltd. Patentee after: Hangzhou Beifeng electromechanical Co.,Ltd. Address before: 310052 Room 201, 2 / F, building 5, No. 1180, Bin'an Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou Beifeng Technology Co., Ltd. |