CN101825096A - Fan assembly - Google Patents
Fan assembly Download PDFInfo
- Publication number
- CN101825096A CN101825096A CN201010129802A CN201010129802A CN101825096A CN 101825096 A CN101825096 A CN 101825096A CN 201010129802 A CN201010129802 A CN 201010129802A CN 201010129802 A CN201010129802 A CN 201010129802A CN 101825096 A CN101825096 A CN 101825096A
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- air
- fan component
- nozzle
- flow
- mouth
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract 1
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- 239000012530 fluid Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000012797 qualification Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
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- 230000006698 induction Effects 0.000 description 2
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- 238000007789 sealing Methods 0.000 description 2
- 241000954177 Bangana ariza Species 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
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- 238000005452 bending Methods 0.000 description 1
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- 238000003825 pressing Methods 0.000 description 1
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Images
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
- 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
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid 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
- F04D29/60—Mounting; Assembling; Disassembling
-
- 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
- F04D29/601—Mounting; Assembling; Disassembling specially 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
- F04D29/60—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
- F04F5/46—Arrangements of nozzles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/32—Supports for air-conditioning, air-humidification or ventilation units
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/28—Details or features not otherwise provided for using the Coanda effect
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
- Power Steering Mechanism (AREA)
- Cookers (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Food-Manufacturing Devices (AREA)
Abstract
A bladeless fan assembly comprises a nozzle (14) and means (64, 68) for creating an air flow through the nozzle (14). The nozzle (14) comprises an interior passage (204), a mouth (40) for receiving the air flow from the interior passage (40), and a surface (42) located adjacent the mouth (40) and over which the mouth is arranged to direct the air flow. The nozzle (14) is mounted on a height adjustable pedestal (12).
Description
Technical field
The present invention relates to a kind of fan component.In a preferred embodiment, the present invention relates to a kind of family expenses fan, desk fan for example is used in the room, office or other family environment produce air stream.
Background technique
The conventional domestic fan typically comprises and is installed as a group of blade or the fin that rotates around axis and is used to make the rotation of this group blade to produce the drive unit of air-flow.The motion of air-flow and circulation produce " air-cooled " or gentle breeze, the result, because heat dissipates by convection current and evaporation, the user feels the effect of cooling.
This fan can be various sizes and shape.For example, ceiling fan can have the diameter of 1m at least, and usually installs to carry air-flow under the east orientation with cool room in the mode that hangs from ceiling board.On the other hand, desk fan has the diameter of 30cm usually, and freely erects usually and be easy to move.The desk fan that stands on ground generally comprises support drive height of devices can regulate stand and is used to produce the vane group of air-flow (usually from 300 to 500l/s scopes).
The shortcoming of such structure is inhomogeneous usually by the air-flow of the rotation blade generation of rotary fan.This is because the variation of striding blade surface or striding the outward surface of fan.The degree of these variations can be from the product to the product and is changed and even change to another from an independent fan machine.These variations cause air-flow inhomogeneous or " springing up ", and this can be perceived as a series of air pulses and it is uncomfortable for the user.
In family environment, do not expect that the part of device is outwards outstanding, or the user can touch the part that moves arbitrarily, for example blade.Desk fan tends to have around the shrouding preventing to contact the injury of rotation blade of blade, but this part that is covering is difficult to cleaning.And because drive unit and rotation blade are installed on the stand top, the top that the center of gravity of desk fan is usually located at stand makes progress.This can cause desk fan to fall easily when accident is clashed into, unless this stand is provided with relative broad or heavier base, this is undesirable for the user.
Summary of the invention
The invention provides a kind of on-bladed fan component, comprise nozzle and the device that is used to produce by the air-flow of this nozzle, this nozzle comprises the inner passage, is used to receive the mouth from the air-flow of inner passage, and be positioned near the mouth surface, mouth is set to steering flow and flows through this surface, and wherein this nozzle is installed on the Height Adjustable stand.
By using the on-bladed fan component, air-flow can be by not using the band blade fan to produce.Compare with this blade fan assembly, the on-bladed fan component causes the minimizing of moving parts and complexity.And, do not use the band blade fan to come from fan component emission air-flow, uniform airflow can be formed and be directed in the room or towards the user relatively.Air-flow can flow out from nozzle effectively, because the energy and the speed of turbulent flow loss are minimum.
Term " on-bladed " is used to describe a kind of fan component, and wherein air-flow is never used the fan component emission of mobile part or penetrates.Therefore, the on-bladed fan component can be considered to have the output area that does not have moving blade, or emitting area, and air-flow is guided or enter the room from this zone towards the user.The output area of on-bladed fan component can be supplied the main air flow of a generation in the multiple not homology (for example pump, generator, motor or other fluid delivery device), and it can comprise whirligig, and for example motor rotor and/or band blade impeller are to produce air-flow.The main air flow that produces can be from the space in room or other environment outside the fan component pass telescopic pipe to nozzle, the mouth by nozzle turns back in the room space then.
Therefore, fan component is described as on-bladed, does not extend to describe power supply or for the required parts of secondary fan function motor for example.The example of secondary fan function can comprise the adjusting and the swing of illumination, fan component.
Its shape of nozzle of fan component is not comprised the restriction of the space requirement of being with blade fan.Preferably, nozzle ring gets around mouth.Nozzle can be a ring nozzle, and it preferably has from the height of 200 to 600mm scopes, more preferably from 250 to 500mm scopes.
Preferably, the mouth of nozzle gets around a mouthful extension, and is preferably annular.Nozzle preferably includes inner shell body section and external shell body section, and it limits the mouth of nozzle.Each part is preferably formed by the respective annular member, but each part can be provided by a plurality of members that link together or otherwise assemble to form this part.External shell body section preferably is set up and is shaped as partly overlapping inner shell body section.This can make the outlet of mouth be limited between the surface, inside of the outer surface of inner shell body section of nozzle and external shell body section.Outlet is preferably the form of notch, preferably has from the width of 0.5 to 5mm scope.Nozzle can comprise a plurality of spacer elements, is used to make the inner shell body section of nozzle and the lap of external shell body section to separate.This can help to keep the even basically of parameatal exit width.Spacer element preferably along outlet equably at interval.
The inner passage is preferably continuous, more preferably is annular, and preferably shape is set to air-flow is divided into two air-flows, and it gets around mouth and flows along two opposite directions.The inner passage is preferably also by the inner shell body section and the external shell body paragraph qualification of nozzle.
Fan component preferably includes the device that is used for oscillating nozzle, so that air stream scans in the arc scope, preferably in from 60 to 120 ° of scopes.For example, the base portion of stand comprises the device that is used for swinging with respect to the bottom part of base portion the top part of base portion, and nozzle is connected to this top part.
As mentioned above, nozzle preferably includes and is positioned near the surface of mouth, and this mouth is set to guide from the air flow stream of its emission crosses this surface.This surface is preferably the coanda surface.Preferably, the external surface shape of the inner housing of nozzle part is set to limit the coanda surface.The coanda surface preferably gets around a mouthful extension.The coanda surface is a kind of surface of known type, and the air-flow that leaves near this surperficial exit orifice represents Coanda effect in this surface.Fluid tends to flow thereon near this surface, almost " adheres to " or " having in arms " this surface.Coanda effect is a method of entrainment certified, the document record, and main air flow is wherein guided on the coanda surface.The explanation of the effect of the feature on coanda surface and the fluid that flows on the coanda surface can be at article Reba for example, Scientific American, and Volume 214, find among the June 1966 pages 84to 92.By using the coanda surface, from the air of the increasing amount of fan component outside by air suction passing through opening from the mouth emission.
In the present invention, the air-flow of fan component generation enters nozzle.In the following description, this air-flow is called as main air flow.Main air flow is launched from the mouth of nozzle and is preferably passed through on the coanda surface.Main air flow is carried the air around the mouth of nozzle secretly, and it is used for supplying main air flow and the air of carrying secretly to the user as the air amplifier.The air of carrying secretly is become secondary gas flow.Secondary gas flow is by from around the external environment condition of the mouth of nozzle or zone or space and by dislocation other zone suction around the fan, and mainly passes the opening that is limited by nozzle.Be directed flowing through the main air flow of coanda surface and the secondary gas flow merging of carrying secretly, equal the total air flow of launching or throwing forward from the opening that nozzle limits.Preferably, make main air flow be exaggerated at least five times, more preferably be exaggerated at least ten times, and keep level and smooth total output around the carrying secretly of mouth air of nozzle.The maximum airflow of the air stream that produces by fan component preferably in the scope of 300 to 800 liters of per seconds, the scope of from 400 to 700 liters of per seconds more preferably.
Preferably, nozzle comprises the diffusing surface that is positioned at downstream, coanda surface.The outer surface of the inner shell body section of nozzle is preferably shaped to and limits this diffusing surface.
Nozzle is installed on the can regulate stand.Preferably, the ccontaining described device that is used to produce air-flow of stand is so that fan component has compact outward appearance.Stand can comprise the pipe that is used for air-flow is sent to nozzle.Therefore, the gas that stand can be used for support nozzle and is used to transmit generation flows to nozzle, and wherein the air-flow that produces of fan component is launched and passes this nozzle.The device that is used to produce the air-flow that passes nozzle can be positioned on the bottom of stand, compare the center of gravity that reduces fan component thus with the prior art desk fan, be connected to the top of stand with blade fan and the device that is used for the rotating band blade fan in the prior art and cause fan component by collision the time, to be toppled over easily.For example, in a preferred embodiment, stand comprises base portion, the ccontaining described device that is used to produce air-flow of this base portion, and pipe extends between this base portion and nozzle.Alternatively, the device that is used to produce air-flow can be positioned in the pipe.
Preferably, the device that is used to produce the air-flow that passes nozzle comprises impeller, is used for the motor of rotary blade and is positioned at the diffuser in impeller downstream.Impeller is preferably the mixed flow impeller.Motor preferably the DC brushless motor to avoid frictional loss and from using the carbonaceous fragment that the brush in the brush motor is arranged in tradition.Reduce carbonaceous fragment and be emitted on cleaning or pollution sensibility environment hospital or to have around the hypersensitive people be favourable for example.Though usually use the induction motor in desk fan also not have brush, the DC brushless motor can provide than the induction motor service speed of wide range more.
Diffuser can comprise a plurality of helical, causes from the air-flow of diffuser discharging spiral.Because the air-flow that passes pipe usually vertically or longitudinal direction, fan component preferably includes and is used for the air-flow from the diffuser emission is directed to device in the pipe.This can reduce the conduction loss in the fan component.Airflow guiding device preferably includes a plurality of fins, its each be used to guide from the corresponding part of diffuser towards the air-flow of pipe emission.These fins can be positioned on the surface, inside of the air guide member that is installed in the diffuser top, and preferably equably at interval.Airflow guiding device also can comprise a plurality of radial fins, is positioned at least in part in the pipe, and each of radial fins is in abutting connection with corresponding one of above-mentioned a plurality of fins.These radial fins can in pipe, limit a plurality of axially or vertical passages, and each all receives the corresponding part of air-flow of the passage of free above-mentioned a plurality of fins qualifications.These parts of air-flow are preferably mixed in pipe.
Pipe can comprise the base on the base portion that is installed in stand and be connected to a plurality of tubular members of the base of pipe.Crooked fin can be positioned in the base of pipe at least in part.Axially fin can be positioned at least in part and be used for a tubular member is connected in the device of base of pipe.This connection set can comprise air conduit or be used to receive other tubular member of a tubular member.
Description of drawings
Only by example, with reference to appended accompanying drawing, embodiment of the present invention will be described now, in the accompanying drawings:
Fig. 1 is the perspective view of fan component, and wherein the telescopic pipe of fan component is in the configuration of stretching out fully;
Fig. 2 is another perspective view of the fan component of Fig. 1, and wherein the telescopic pipe of fan component is in the retracted position;
Fig. 3 is the sectional view of base portion of stand of the fan component of Fig. 1;
Fig. 4 is the decomposition view of telescopic pipe of the fan component of Fig. 1;
Fig. 5 is that the pipe of Fig. 4 is in the side view in the configuration of stretching out fully;
Fig. 6 is the sectional view along the pipe of the intercepting of the line A-A among Fig. 5;
Fig. 7 is the sectional view along the pipe of the intercepting of the line B-B among Fig. 5;
Fig. 8 is that the pipe of Fig. 4 is in the perspective view in the configuration of stretching out fully, and wherein the part of lower tubular member is cut;
Fig. 9 is the partial enlarged view of Fig. 8, and wherein the various piece of pipe is removed;
Figure 10 is the side view of the pipe of Fig. 4 when being in the retracted configuration;
Figure 11 is the sectional view along the pipe of the intercepting of the line C-C among Figure 10;
Figure 12 is the decomposition view of nozzle of the fan component of Fig. 1;
Figure 13 is the front elevation of the nozzle of Figure 12;
Figure 14 is the sectional view along the nozzle of the intercepting of the line P-P among Figure 13; With
Figure 15 is the zoomed-in view of the region R of indication among Figure 14.
Embodiment
Fig. 1 and 2 shows the embodiment's of fan component 10 perspective view.In this embodiment, fan component 10 is on-bladed fan components, and is the form of family expenses desk fan, and it comprises Height Adjustable stand 12 and is installed in the nozzle 14 that is used on the stand 12 launch from the air of fan component 10.Stand 12 comprises the base portion 16 that lands and Height Adjustable of telescopic pipe 18 forms, and this telescopic pipe extends upward to send from the bottom 16 main air flow to nozzle 14 from base portion 16.
The base portion 16 of stand 12 comprises the columniform basically motor casing part 20 that is installed on the cylindrical bottom portion housing parts 22 basically.Motor casing part 20 and lower case part 22 preferably have substantially the same outer diameter, so that the outer surface of motor casing part 20 flushes with the outer surface of lower case part 22 basically.Lower case part 22 is installed in alternatively lands on the plate-like base plate 24, and comprises that a plurality of user-operable button 26 and user-operable rotating disk 28 are used to control the running of fan component 10.Base portion 16 also comprises a plurality of air inlets 30, and it is sucked base portion 16 by this hole from external environment condition for form and the main air flow that is formed on the hole on the motor casing part 20 in this embodiment.In this embodiment, the base portion 16 of stand 12 has from the height of 200 to 300mm scopes, and motor casing part 20 has from the diameter of 100 to 200mm scopes.Base plate 24 preferably has from the diameter of 200 to 300mm scopes.
The telescopic pipe 18 of stand 12 can move between the configuration (as shown in Figure 2) of configuration of stretching out fully (as shown in Figure 1) and withdrawal.Pipe 18 comprises cylindrical basically base 32 on the base portion 12 that is installed in fan component 10, be connected to base 32 and be positioned at the inner tubular member 36 of outer tubular member 34 from its upwardly extending outer tubular member 34 and part.Connector 37 is connected to nozzle 14 open upper of the inner tubular member 36 of pipe 18.Inner tubular member 36 is externally slided between the position (as shown in Figure 2) of position of stretching out fully (as shown in Figure 1) and withdrawal with respect to it in the tubular member 34.When inner tubular member 36 is in the complete extended position, fan component 10 preferably has from the height of 1200 to 1600mm scopes, and when inner tubular member 36 was in the retracted position, fan component 10 preferably had from the height of 900 to 1300mm scopes.In order to regulate the height of fan component 10, the user can catch the expose portion of inner tubular member 36, as required along the inner tubular member of direction slip up or down 36, so that nozzle 14 is in the vertical position of hope.When inner tubular member 36 was in its retracted position, the user can catch link 37 upwards to draw inner tubular member 36.
Fig. 3 shows the cross sectional view of the base portion 16 that passes stand 12.The lower case part 22 ccontaining controllers of base portion 16, usually represent with 52, be used to respond pressing down and/or the manipulation of user-operable rotating disk 28 of the user-operable button 26 shown in Fig. 1 and 2, running with control fan component 10, lower case part 22 comprises sensor 54 alternatively, be used to receive from the control signal of remote controller (not shown) and be used for control signal is sent to controller 52.These control signals are preferably infrared signal.Sensor 54 is positioned at window 55 back, and control signal enters the lower case part 22 of base portion 16 by this window.The light emitting diode (not shown) can be set for indication fan component 10 and whether be in standby mode.The also ccontaining mechanism of lower case part 22 represents with 56 usually, is used for lower case part 22 swings of the motor casing part 20 of base portion 16 with respect to base portion 16.Swing mechanism 56 comprises running shaft 56a, and this axle extends to the motor casing part 20 from lower case part 22.Axle 56a is supported on by bearing among the sleeve 56b that is connected to lower case part 22, rotates with respect to sleeve 56b to allow axle 56a.The end of axle 56a is connected to the core of annular connecting plate 56c, and the exterior section of connecting plate 56c is connected to the base of motor casing part 20.This allows motor casing part 20 with respect to 22 rotations of lower case part.Swing mechanism 56 also comprises the motor (not shown) that is positioned in the lower case part 22, and its operating crank arm (usually with the 56d indication), this crankweb make the top part swing of motor casing part 20 with respect to lower case part 22.Be used for a part normally knownly, and here will not describe thus with respect to the crankweb structure of another swing.Motor casing part 20 preferably between 60 ° and 120 °, and is about 90 ° with respect to the scope of each wobble cycle of lower case part 22 in this embodiment.In this embodiment, swing mechanism 56 is set to per minute and carries out about 3 to 5 wobble cycle.Mains power cable 58 is passed the hole extension that is formed in the lower case part 22, thinks fan component 10 power supplies.
Preferably, the base portion 16 of stand 12 also comprises quiet foam, is used to reduce the noise that sends from base portion 16.In this embodiment, the motor casing part 20 of base portion 16 comprises the first annular foam member 80 that is positioned under the grid 60, and the second annular foam member 82 between impeller housing 76 and inlet component 78.
Describe the telescopic pipe 18 of stand 12 in detail referring now to Fig. 4 to 11.Pipe 18 base 32 comprises cylindrical substantially sidewall 102 and annular upper portion surface 104, and this surface is substantially normal to sidewall 102 and preferably is integral body with it.Sidewall 102 preferably has basically the outer diameter identical with the motor casing part 20 of base portion 16, and shape is provided so that when pipe 18 when being connected to base portion 16, and the outer surface of sidewall 102 flushes with the outer surface of the motor casing part 20 of base portion 16 basically.Base 32 also comprises from upper face 104 upwardly extending relatively short air ducts 106, is used for main air flow is sent to the outer tubular member 34 of pipe 18.Air duct 106 preferably basically with sidewall 102 coaxial lines, and have outer dia, this outer dia is slightly less than the inside diameter of the outer tubular member 34 of pipe 18, so that air duct 106 can be inserted into the outer tubular member 34 of pipe 18 fully.A plurality of extending axially on the outer surface that rib 108 can be positioned in air duct 106 is used to form and manages the interference fit of 18 outer tubular member 34 and thus outer tubular member 34 be fixed to base 32.Annular seat component 110 is positioned on the upper end of air duct 106, externally to form hermetically sealing between tubular member 34 and the air duct 106.
Pipe 18 comprises is with dome air guide member 114, is used for the main air flow guiding of sending from diffuser 74 is entered air duct 106.Air guide member 114 has to be used to receive from the lower end 116 of opening wide of the main air flow of base portion 16 with main air flow and is sent to open upper end 118 in the air duct 106.Air guide member 114 is contained in the base 32 of pipe 18.Air guide member 114 is connected to base 32 by the cooperation bayonet connection 120 that is positioned on base 32 and the air guide member 114.Second annular seat component 121 is positioned around the open upper portion end 118, to form hermetically sealing between base 32 and air guide member 114.As shown in Figure 3, air guide member 114 for example is connected to the open upper end of the motor casing part 20 of base portion 16 by cooperation bayonet connection 123 on the motor casing part 20 that is positioned at air guide member 114 and base portion 16 or threaded connector.Therefore, air guide member 114 is used for pipe 18 is connected to the base portion 16 of stand 12.
A plurality of air guide tabs 122 are positioned on the surface, inside of air guide member 114, are used to guide the spiral air flow that sends from diffuser 74 to enter air duct 106.In this example, air guide member 114 comprises seven air guide tabs 122, and its surface, inside around air guide member 114 distributes equably.Air guide tabs 122 is in the centre convergence of the open upper end 118 of air guide member 114, and limits a plurality of air passagewayss 124 thus in air guide member 114, and each air passageways all is used to guide the appropriate section of main air flow to enter air duct 106.Specifically all be positioned at air duct 106 with reference to 4, seven radial air guide tabs 126 of figure.Each radial air guide tabs 126 is extended along the whole length of air duct 126 basically, and when air guide member 114 is connected to base 32 in abutting connection with a corresponding air guide tabs 122.Radial air guide tabs 126 limits a plurality of air passagewayss 128 that extend axially thus in air duct 106, each passage all receives the corresponding a part of main air flow from the corresponding air passageways 124 in the air guide member 114, and it transmits this part main air flow and axially passes air duct 106 and enter in the outer tubular member 34 of pipe 18.Therefore, the spiral air flow that the air guide member 114 of base 32 and pipe 18 is used for sending from diffuser 74 is converted into axial flow, and this axial flow passes outer tubular member 34 and inner tubular member 36 enters nozzle 14.The 3rd annular seat component 129 can be provided, and is used in air guide member 114 and manages between 18 the base 32 forming hermetic seal.
Cylindrical upper section sleeve 130 for example utilizes binder or is connected to the surface, inside of the top part of outer tubular member 34 by interference fit, so that the upper end 132 of upper sleeve 130 flushes with the upper end of outer tubular member 34.Upper sleeve 130 has inner diameter, and this inner diameter passes upper sleeve 130 less times greater than the outer diameter of inner tubular member 36 to allow inner tubular member 36.The 3rd annular seat component 136 is positioned on the upper sleeve 130, to form gas tight seal with inner tubular member 36.The 3rd annular seat component 136 comprises annular lip 138, and its upper end 132 that engages outer tubular member 34 is to form hermetic seal between upper sleeve 130 and outer tubular member 34.
Cylindrical lower portion sleeve 140 for example utilizes binder or is connected to the outer surface of the bottom part of inner tubular member 36 by interference fit, so that the lower end 142 of inner tubular member 36 is positioned between the upper end 144 and lower end 146 of lower sleeve portion 140.The upper end 144 of lower sleeve portion 140 has basically the outer diameter identical with the lower end 148 of upper sleeve 130.Therefore, in the complete extended position of inner tubular member 36, the upper end 144 of following parts casing pipe 140 prevents thus that against the lower end 148 of upper sleeve 130 inner tubular member 36 from being extracted out from outer tubular member 34 fully.In the retracted position of inner tubular member 36, the lower end 146 of lower sleeve portion 140 is against the upper end of air duct 106.
Main spring (main spring) 150 reels around axle 152, and this is supported between the arm that extends internally 154 of lower sleeve portion 140 of pipe 18, as shown in Figure 7 with being rotated.With reference to figure 8, main spring 150 comprises steel bar, and it has the free end 156 between the surface, inside of the outer surface of upper sleeve of being fixedly located in 130 and outer tubular member 34.Therefore, when inner tubular member 36 when complete extended position (as illustrated in Figures 5 and 6) drops to retracted position (shown in Figure 10 and 11), main spring 150 from axle 152 debatchings around.The elastic energy that is stored in the main spring 150 is used for keeping the user selected position of inner tubular member 36 with respect to outer tubular member 34 as counterweight.
By spring-loaded arcus 158, provide for the additional movement resistance of inner tubular member 36 with respect to outer tubular member 34, this arcus is preferably formed by plastic materials, and is positioned at the annular groove 160 that extends circumferentially around lower sleeve portion 140.With reference to figure 7 and 9, be with 158 not exclusively to extend, and comprise two opposed ends 161 thus around lower sleeve portion 140.Each end 161 with 158 all comprises inner radial part 161a, and this part is received in the hole 162 that is formed in the lower sleeve portion 140.Pressure spring 164 is positioned between the inner radial part 161a with 158 end 161, so that the outer surface with 158 is pressed against on the surface, inside of outer tubular member 34, increase the frictional force of opposing inner tubular member 36 thus with respect to outer tubular member 34 motions.
Be with 158 also to comprise with groove part 166, this part is positioned as relatively with pressure spring 164 in this embodiment, and its qualification is with extending axially groove 167 on 158 the outer surface.Groove 167 with 158 is positioned at salient rib 168 tops, and its length along the surface, inside of outer tubular member 34 is axially extended.Groove 167 has basically angular breadth and the radial depth identical with salient rib 168, to suppress the relative rotation between inner tubular member 36 and the outer tubular member 34.
With reference now to Figure 12 to 15, the nozzle 14 of fan component 10 is described.Nozzle 14 comprises annular outer shell portion section 200, and it is connected to ring-shaped inner part shell part 202 and extends around this inner shell body section.Each of these sections all can be formed by a plurality of attachment portions, but in this embodiment, each of external shell body section 200 and inner shell body section 202 formed by single moulded parts respectively.Inner shell body section 202 limits the central opening 38 of nozzle 14, and has outer peripheral surfaces 203, and this outer peripheral surfaces shape is set to limit coanda surface 42, diffusing surface 44, guiding surface 46 and conical surface 48.
External shell body section 200 and inner shell body section 202 limit the ring-shaped inner part passage 204 of nozzle 14 together.Therefore, inner passage 204 gets around mouthful 38 extensions.Inner passage 204 is defined by the interior periphery surface 206 of external shell body section 200 and the interior periphery surface 208 of inner shell body section 202.The base of external shell body section 200 comprises hole 210.
Connector 37 (it connects the open upper end 170 of nozzle 14 to the inner tubular member 36 of pipe 18) comprises leaning device, is used for nozzle 14 is tilted with respect to stand 12.Leaning device comprises upper component, and for being positioned at the form of the plate 300 in the hole 210 regularly.Alternatively, plate 300 can be whole with external shell body section 200.Plate 300 comprises circular hole 302, and main air flow passes this circular hole and enters inner passage 204 from telescopic pipe 18.Connector 37 also comprises lower member, and this lower member is the form of air conduit 304, and it inserted the open upper end 170 of inner tubular member 36 at least in part.Air conduit 304 has basically and the identical inner diameter of circular hole 302 in the upper board 300 that is formed on connector 37.If desired, annular seat component can be provided, be used between the outer surface of the surface, inside of inner tubular member 36 and air conduit 304, forming gas tight seal, and stop air conduit 304 internally tubular member 36 extract out.Plate 300 utilizes one group of link (representing with 306 among Figure 12) to be pivotally connected to air conduit 304, and these links are covered by end cap 308.Flexible hose 310 extends to transmit air betwixt between air conduit 304 and plate 300.Flexible hose 310 can be the ring bellows seal element.First annular seat component 312 forms gas tight seal between flexible pipe 310 and air conduit 304, second annular seat component 314 forms gas tight seal between flexible pipe 310 and plate 300.For nozzle 14 is tilted with respect to stand 12, the user draws simply or pushes away nozzle 14 so that flexible pipe 310 bendings are to allow plate 300 with respect to air conduit 304 motions.The required power of moving nozzle depends on the tightness (tightness) of the connection between plate 300 and the air conduit 304, and preferably arrives in the scope of 4N 2.Nozzle 14 preferably can be in ± 10 ° of scopes never oblique position (wherein axis X substantial horizontal) to complete oblique position motion.When nozzle 14 was tilted with respect to stand 12, axis X was scanned along the perpendicular plane.
The mouth 40 of nozzle 14 is positioned at the rear portion of nozzle 14.Mouth 40 is limited by the part corresponding overlapping or that face 212,214 of the outer peripheral surfaces 203 of the interior periphery of external shell body section 200 surface 206 and inner shell body section 202.In this embodiment, mouth 40 is general toroidal, as shown in figure 15, when along diameter pass nozzle 14 the line intercepting time have U-shaped cross section basically.In this embodiment, the shape of the lap 212,214 of the interior periphery surface 206 of external shell body section 200 and the outer peripheral surfaces 203 of inner shell body section 202 is provided so that mouth 40 is tapered towards outlet 216, and this outlet is provided for guiding main air flow to flow through 42 tops, coanda surface.Outlet 216 is forms of annular notches, preferably has the constant relatively width in 0.5 to the 5mm scope.In this embodiment, outlet 216 has from the width of 0.5 to 1.5mm scope.Spacer element can be arranged on around the mouth 40, so that the lap 212,214 of the outer peripheral surfaces 203 of the interior periphery of external shell body section 200 surface 206 and inner shell body section 202 is spaced apart, with the width that keeps outlet 216 level in expectation.These spacer elements can with the interior periphery of external shell body section 200 surface 206 or with the outer peripheral surfaces 203 of inner shell body section 202 be integral body.
In order to operate fan component 10, the user pushes suitable in the button 26 on the base portion 16 of stand 12, responds this and pushes, and controller 52 starting motors 68 are with rotary blade 64.The rotation of impeller 64 causes main air flow to be drawn into the base portion 16 of stand 12 by the hole 62 of grid 60.Depend on the speed of motor, the main air flow flow velocity can be between 20 and 40 liters of per seconds.Main air flow passes impeller housing 76 and diffuser 74 in succession.The spiral-shaped main air flow that causes of the blade of diffuser 74 is discharged with the form of spiral air flow from diffuser 74.Main air flow enters air guide member 114, and wherein Wan Qu air guide tabs 122 is divided into a plurality of parts with main air flow, and corresponding of entering in the air duct 106 of base 32 of telescopic pipe 18 of each part of guiding main air flow extends axially air passageways 128.These parts of main air flow are being converted into axial flow when air duct 106 is issued.Main air flow is upward through the outer tubular member 34 and the inner tubular member 36 of pipe 18, and passes the inner passage 86 that connector 37 enters nozzle 14.
In nozzle 14, main air flow is divided into two strands of air-flows, and it passes through around the central opening 38 of nozzle 14 in opposite direction.When air-flow passed inner passage 204, air entered the mouth 40 of nozzle 14.The air-flow that enters mouth 40 is uniform around the opening 38 of nozzle 14 basically preferably.In mouth 40, the flow direction of air-flow is reversed basically.Air-flow be subjected to mouth 40 tapering part constraint and send by exporting 216.
The main air flow that sends from mouth 40 is directed on the coanda surface 42 of nozzle 14, causes producing secondary gas flow by the carrying secretly of air near external environment condition (particularly outlet 216 peripheral regions and the rear portion from nozzle 14 from mouth 40).This secondary gas flow passes the central opening 38 of nozzle 14, closes with the generation total air flow with main air flow there, or air stream, throw forward from nozzle 14.Depend on the speed of motor 68, the mass velocity of the air stream that throws forward from fan component 10 can be up to 400 liters of per seconds, preferably up to 600 liters of per seconds, and more preferably up to 800 liters of per seconds, and the top speed of air stream can be 2.5 in the scope of 4.5m/s.
Main air flow guarantees that along mouth 40 even distributions of nozzle 14 air-flow passes through equably on diffusing surface 44.By air-flow being moved through the controlled expansion zone, diffusing surface 44 causes the mean velocity of air-flow to reduce.The less relatively angle of the central axis X with respect to opening 38 of diffusing surface 44 allows the expansion of air-flow little by little to take place.Otherwise, sharply or fast disperse causing air-flow to become chaotic, in expansion area, produce vortex.This vortex can cause turbulent flow in the air-flow and the increase of the noise that is associated, and this does not expect, particularly in the household electric appliance of for example fan.Throwing the air-flow of crossing diffusing surface 44 forward can tend to disperse continuously.This air-flow is further assembled in the existence that is arranged essentially parallel to the guiding surface 46 that the central axis X of opening 38 extends.As a result, air-flow can advance to come out from nozzle 14 effectively, makes air-flow being experienced fast from more than 10 meters distances of fan component.
Claims (19)
1. on-bladed fan component, comprise nozzle and the device that is used to produce the air-flow that passes this nozzle, this nozzle comprises the inner passage, be used to receive mouth from the air-flow of this inner passage, be positioned near the surface the mouth, mouth is set up this air flow stream of guiding and crosses this surface, and wherein this nozzle is installed on the Height Adjustable stand.
2. fan component as claimed in claim 1, the wherein ccontaining described device that is used to produce air-flow of stand.
3. fan component as claimed in claim 2, wherein stand comprises and is used to transmit the pipe that gas flows to nozzle.
4. fan component as claimed in claim 3, wherein stand comprises the ccontaining described base portion that is used to produce the device of air-flow, and wherein said pipe extends between this base portion and nozzle.
5. fan component as claimed in claim 4, the diffuser that the wherein said device that is used to produce air-flow comprises impeller, is used to rotate the motor of this impeller and is positioned at this impeller downstream.
6. fan component as claimed in claim 5 comprises the device that is used for being directed to from the air-flow of diffuser in the described pipe.
7. fan component as claimed in claim 6, wherein said airflow guiding device comprises a plurality of fins, its each fin all guides the corresponding part of the air-flow that sends towards described pipe from diffuser.
8. fan component as claimed in claim 7, wherein airflow guiding device comprises to small part and is positioned at a plurality of radial fins in the described pipe, each of radial fins is all in abutting connection with corresponding of described a plurality of fins.
9. as each described fan component in the claim 1 to 8, wherein the shape of inner passage is set to the air-flow that receives is divided into two strands of air-flows, and per share air-flow is along a corresponding side flow of opening.
10. as each described fan component in the claim 1 to 8, wherein the inner passage is continuous.
11. as each described fan component in the claim 1 to 8, wherein the inner passage is annular basically.
12. as each described fan component in the claim 1 to 8, wherein mouth gets around a mouthful extension, and preferably concentric with the inner passage.
13. as each described fan component in the claim 1 to 8, wherein nozzle comprises inner shell body section and external shell body section, it limits described inner passage and mouth together.
14. fan component as claimed in claim 13, wherein mouth comprises the outlet between the surface, inside of the external shell body section of the outer surface of the inner shell body section of nozzle and nozzle.
15. fan component as claimed in claim 14, its middle outlet are to get around mouthful form of the notch that extends at least in part.
16. fan component as claimed in claim 14, its middle outlet has from the width of 0.5 to 5mm scope.
17. as each described fan component in the claim 1 to 8, wherein said surface comprises the coanda surface.
18. fan component as claimed in claim 17, wherein the coanda surface gets around a mouthful extension.
19. as each described fan component in the claim 1 to 8, wherein nozzle comprises the diffusing surface that is positioned at the mouth downstream.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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GB0903685.6 | 2009-03-04 | ||
GB0903685A GB2468325A (en) | 2009-03-04 | 2009-03-04 | Height adjustable fan with nozzle |
Publications (2)
Publication Number | Publication Date |
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CN101825096A true CN101825096A (en) | 2010-09-08 |
CN101825096B CN101825096B (en) | 2012-09-19 |
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Application Number | Title | Priority Date | Filing Date |
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CN2010101298024A Expired - Fee Related CN101825096B (en) | 2009-03-04 | 2010-03-04 | Fan assembly |
Country Status (16)
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US (1) | US20100226749A1 (en) |
EP (1) | EP2271841B1 (en) |
JP (1) | JP5068838B2 (en) |
KR (1) | KR101311397B1 (en) |
CN (1) | CN101825096B (en) |
AT (1) | ATE513998T1 (en) |
AU (2) | AU2010219492B2 (en) |
CA (1) | CA2746723C (en) |
DK (1) | DK2271841T3 (en) |
ES (1) | ES2366943T3 (en) |
GB (1) | GB2468325A (en) |
HK (1) | HK1148045A1 (en) |
PL (1) | PL2271841T3 (en) |
PT (1) | PT2271841E (en) |
RU (1) | RU2504694C2 (en) |
WO (1) | WO2010100457A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
AU2010101299C4 (en) | 2012-04-19 |
ES2366943T3 (en) | 2011-10-26 |
EP2271841B1 (en) | 2011-06-22 |
KR101311397B1 (en) | 2013-09-25 |
CA2746723A1 (en) | 2010-09-10 |
HK1148045A1 (en) | 2011-08-26 |
KR20110099284A (en) | 2011-09-07 |
WO2010100457A1 (en) | 2010-09-10 |
AU2010101299A4 (en) | 2010-12-23 |
JP5068838B2 (en) | 2012-11-07 |
RU2504694C2 (en) | 2014-01-20 |
EP2271841A1 (en) | 2011-01-12 |
ATE513998T1 (en) | 2011-07-15 |
RU2011136078A (en) | 2013-03-10 |
CN101825096B (en) | 2012-09-19 |
CA2746723C (en) | 2016-03-22 |
JP2010203447A (en) | 2010-09-16 |
GB2468325A (en) | 2010-09-08 |
PL2271841T3 (en) | 2011-10-31 |
AU2010219492B2 (en) | 2011-11-17 |
DK2271841T3 (en) | 2011-10-03 |
PT2271841E (en) | 2011-09-01 |
AU2010219492A1 (en) | 2010-09-10 |
US20100226749A1 (en) | 2010-09-09 |
GB0903685D0 (en) | 2009-04-15 |
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