WO1991013257A1 - Dispositif destine a produire un ecoulement de fluide et son procede de fabrication - Google Patents
Dispositif destine a produire un ecoulement de fluide et son procede de fabrication Download PDFInfo
- Publication number
- WO1991013257A1 WO1991013257A1 PCT/JP1991/000281 JP9100281W WO9113257A1 WO 1991013257 A1 WO1991013257 A1 WO 1991013257A1 JP 9100281 W JP9100281 W JP 9100281W WO 9113257 A1 WO9113257 A1 WO 9113257A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wake
- plate
- fluid
- plates
- gap
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/161—Shear force 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
- F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
-
- 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
- F04D29/18—Rotors
-
- 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
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/001—Shear force pumps
Definitions
- the present invention relates to a current generator for sending a fluid, such as a blower and a pump, and a method for manufacturing the same.
- a plurality of annular wake plates are arranged in a direction perpendicular to the rotation axis, and these wake plates are rotated around the rotation axis, and the fluid is generated by friction between the surface of the wake plate and the fluid (air).
- This type of starter has the advantage of being inexpensive due to its simple structure, but has the problem of not being able to obtain sufficient performance with respect to flow rate and the like.
- an induction motor is often used to drive the current generator, but the maximum rotation speed of the induction motor is determined by the power supply frequency, so the upper limit of the rotation speed of the current generator is determined. This limitation is also caused by the durability of the bearing and the like. When the maximum rotation speed is limited in this way, if a higher flow rate is required, it is necessary to improve the space efficiency of the priming machine (increase the flow rate with the same dimensions) instead of increasing the rotation speed. .
- the purpose of the present invention is to maximize the performance of this type of current generator.
- Another object of the present invention is to protect a method of manufacturing a current generator of this type having extremely high performance.
- the current generator of the present invention includes a plurality of wake plates arranged at intervals in a direction substantially perpendicular to the rotation axis, and means for rotating these wake plates about the rotation axis.
- the wake plate has a surface on which the fluid is moved only by the adhesion phenomenon with the fluid in contact with the wake plate, and the surface along which the fluid moved by the adhesion phenomenon finally leaves the wake plate.
- the closest fluid that is formed in the radial direction up to the outside of the plate, and the gap between adjacent wake plates has a strong adhesive force to the wake plate and rotates and moves almost together with the wake plate.
- the method for manufacturing a current generator according to the present invention includes a plurality of wake plates arranged with a gap therebetween in a direction perpendicular to the rotation axis, and the wake plates rotating around the rotation axis. And a means for producing a fluid boundary layer portion having a small adhering force to the wake plate and little influence of centrifugal force due to rotation of the wake plate. Style The distance from the plate surface is determined, and the gap of the wake plate is twice the intermediate value of the distance from the wake plate surface to the fluid boundary layer where there is almost no effect of centrifugal force. The feature is to assemble the wake plate in this way.
- the closest fluid boundary layer portion in contact with the surface of the wake-up plate is urged by the adhering force to the wake-up plate. It rotates with the plate, and is sent radially outward by the combined force of the centrifugal force and the adhesive force generated with it.
- the fluid adjacent to the nearest layer portion is also sent to the radial direction outward with a slight delay from the movement of the near fluid boundary layer portion due to the displacement stress. As the distance from the closest fluid boundary layer increases, the fluid flow becomes more delayed from the closest fluid boundary layer.
- the performance such as the flow rate of the wake machine is improved to the utmost.
- a centrifugal force acts with the rotation of the wake plate due to the phenomenon of adhesion to the wake plate. This centrifugal force becomes smaller as the distance from the surface of the wake plate increases, and becomes maximum near the surface of the wake plate.
- the wake effect is generated by the combined force of the centrifugal force and the adhesion force. Near the surface of the wake plate, the centripetal force is large, but the adhesive force is also large.
- Adhesion force is infinite at the part in contact with the wake plate. You can see. Therefore, the centrifugal force is reduced by the adhesive force on and near the surface of the wake plate. On the wake plate surface, the fluid actually remains attached. On the other hand, when leaving the wake plate surface, the centrifugal force is weakened due to weak adhesion, and wake is unlikely to occur. Therefore, in the middle part, there should be a place where the adhering force is moderate and centrifugal force acts, and this centrifugal force overcomes the adhering force and generates wakes most efficiently.
- the present invention improves the performance such as the flow rate of the wake-up device by using this portion.
- FIG. 1 is a perspective view showing the basic structure of the current generator of the present invention
- Fig. 3 is a plan view in the direction perpendicular to the rotation axis
- Fig. 4 is an explanatory view of the boundary layer
- Fig. 5 is an explanatory diagram of the phenomenon when the wake plate rotates
- Figs. 6a and 6b are a plan view and a cross-sectional view of the wake plate used in the experiment on which the present invention was based
- FIG. 6c is a perspective view showing the experimental results
- FIG. 7 is a diagram showing the experimental results
- FIG. 8 is a plan view of an example of the wave-formation starting plate.
- Fig. 9 and Fig. 10 are explanatory diagrams for comparison of dogs with increased surface area of the waveform wake plate.
- FIG. 11 is a graph showing the experimental results for the flow rate
- Fig. 12 is an explanatory diagram of the wake plate's waveform
- FIG. 13 is a plan view showing another example of the wake plate
- FIG. 14 is a side view of the wake plate of FIG. 13
- FIG. 15 is another view of the wake plate.
- Side view showing an example and a rectifying auxiliary plate
- FIG. 16 is a side view showing still another example of a wake plate and a rectifying auxiliary plate.
- FIG. 17 is a perspective view showing still another example of the wake plate
- FIGS. 18 to 20 are explanatory diagrams showing various examples of the shape and arrangement of the wake plate
- Fig. 21 and Fig. 22 are explanatory diagrams of the noise generation phenomenon
- Fig. 23 is an explanatory diagram of the state without noise
- Fig. 24 shows the wake plate and its connecting members.
- Fig. 25 shows an improved example of the connecting material of the wake plate.
- Fig. 26 shows the cross flow fan of the present invention. Diagram showing usage examples,
- Fig. 27 shows another example of a wake plate.
- FIG. 28 is a side view of FIG. 27, and FIG. 29 is a cross-sectional view of FIG.
- FIG. 30 and FIG. 31 are cross-sectional views showing an example of modification of the waveform of the wake plate.
- FIG. 32 is a diagram showing another example of the waveform of the wake plate
- FIGS. 33, 34, 35 and 36 are diagrams showing different application examples of the wake device of the present invention, respectively. . — La —
- reference numeral 0-0 denotes the rotation axis of the current generator, and a plurality of annular wake-up plates P are integrally provided so as to be orthogonal to the rotation axis.
- the wake plates P are arranged parallel to each other with a gap CL therebetween, and have a circular opening 2 at the center.
- a spacer 3 is provided in the wake plate P to keep the gap CL, and in order to make the wake plate P rotatable, as shown in FIG.
- the rotating shafts 4a and 4b are fixed to the shaft, and a motor M is connected to one rotating shaft 4b.
- the rotating shafts 4a and 4b are supported by bearings (not shown).
- the wake plate P can be accommodated in a casing 5 having a discharge port 6.
- the one rotating shaft 4a and its bearing may not be provided.
- R is the radius of the outer circumference ⁇ of the wake plate
- N is the rotation speed
- k is a constant. That is, the flow rate is determined in proportion to the radius and the number of revolutions (that is, the peripheral speed of the wake plate).
- the flow rate will not increase except for increasing the constant k.
- the increase in the constant k will be described later. If it is intended to improve the capacity of the priming machine within the stipulated radius and stipulated length (axial direction) of the gull, it is within the specified length. There is no other way to improve the space efficiency within.
- the main object of the present invention is to improve this space efficiency.
- the thickness of the wake plate within a certain axial length range is better.
- the reason for this is that only the surface of the wake plate is involved in sending the fluid, and the plate thickness does not contribute to the wake. Therefore, the wake plate needs to withstand the required mechanical strength.
- the mechanical strength of this type of wake-up machine only needs to deal with the plane tension and centrifugal force of the plate generated mainly at the fixed part in the plane of the wake-up plate. There is no action of other forces. Therefore, the wake plate can withstand even plastics such as polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- the gas wraps around in the circumferential direction opposite to the rotation direction E of the annular plate P "as shown by the arrow f.
- the degree of “” can be represented by the angle 0 in FIG. 6a.
- the trajectory of the gas appears in different shades as shown in Fig. 6c, where the denser trajectory has a higher flow rate and the thinner trajectory has a lower flow rate.
- the fact that there are many flows with a large wrap angle of 0 means that there are many parts where the influence of the adhesive force of the annular plate is small, and that the rotational energy of the annular plate P "is not fully used.
- the corner The fact that there are many flows with a degree of 0 is small 3 "means that the generated centrifugal force is killed by the adhesive force and the flow is reduced.
- Air gap between the annular plates 0.13 to 0.25 i.e., an air layer of 0.13 / 2 to 0.25 Z2 ram thickness from the surface of each annular plate This is an air layer which is considered to be almost attached to the surface.
- This air layer is a layer indicated by a in FIG.
- the air in the gap exceeding 1.0 rom that is, the air separated from the surface of each annular plate by more than 1.0 / 2, respectively, is affected by the adhesion force and centrifugal force of the annular plate. There is little air, and this air is outside the area indicated by c in FIG.
- the adhesive force is too strong, and it is difficult for the air to flow due to the centrifugal force. Since this air layer, that is, the portion a of the closest fluid boundary layer, is extremely thin as described above, the thickness can be almost ignored.
- the area b between a and c above is easily affected by centrifugal force and space efficiency is maximized (Fig. 4). ).
- the area will be around 0, 38Z 2-0.5Z 2mm.
- the final space efficiency of the wake-up device is determined by the number of surfaces with the maximum space efficiency per one surface of the wake-up plate within the specified axial length.
- the constant k is the surface area of the wake plate. It is considered that by increasing the surface area, the constant k can be increased and the flow rate Q can be increased. Assuming that the inner radius and the outer radius of the wake plate are regulated, the surface area can be increased by forming irregularities.
- FIG. 10 An example is shown in FIG.
- the annular wake play shown in the figure has a waveform 10 inclined with respect to the radius line in the direction opposite to the rotation direction indicated by the arrow.
- the cross section of this waveform is, for example, a triangular cross section with an apex angle of 60 ′.
- the surface area of the wake plate is twice that of a flat plate wake plate.
- Fig. 9 when the triangular waveform is small, 0.5 Z 2mra
- the locus 11 of the point at a distance of (0.25 mra) has an extremely low arc shape as shown in the figure, and is the closest affected by the wake plate up to 0.25 mm.
- the shape of the boundary layer is not much different from that of a flat plate wake plate, and the effect of increasing the constant k is small.
- the flow rate can be increased. This is about one surface of one wake-up plate.
- the theoretical calculation shows that the wake plate having a triangular wave surface with an apex angle of 60 is 0.5 mm in the direction perpendicular to the slope. If they are arranged so as to face each other with a gap, the two wake plates face each other at a distance of 0.5 ram / sin 30 °, that is, 1 mm in the direction of the rotation axis.
- the axial spacing is twice as large as 0.5, and the number of wake plates that can be installed within a certain axial dimension is half that of a flat plate wake plate. Therefore, in theory, even if the surface area of each wake plate doubles and the flow rate increases, it will be canceled by halving the number of sheets. This fact is the same even when the apex angle of the triangular waveform is other than 60 '. However, the result of this theoretical calculation does not agree with the experimental result. According to the experimental results, a large waveform has the effect of increasing the flow rate.
- the fluid flowing on the surface of the wake plate satisfies the above conditions due to the formation of the waveform, and receives an effective centrifugal force with moderate adhesion to the surface of the wake plate It is considered that a turbulent boundary layer is formed and its thickness exceeds the thickness of the laminar boundary layer generated in the case of a flat plate wake plate.
- the waveform is wrapped around in the direction opposite to the rotation direction, and in the example of FIG. 12, the waveform is a force pointing in the radial direction, and the direction of the waveform is curved in the rotation direction. In some cases, it can be done. In any case, when the wake plate rotates, the fluid flowing from the inner peripheral edge to the outer peripheral edge does not flow all along the corrugated groove, but flows over the corrugated flow.
- the largest contributor to the wake is near the outer periphery of the wake plate P. Because the peripheral speed is the highest at the outer edge ⁇ ⁇ It is desirable to design the wake plate assembly so that the optimum effective gap is formed near the outer periphery ⁇ ⁇ that contributes most to the wake.
- this wake plate type motive device is originally a high-rotation, large static pressure type, and it is more important to devise measures to increase the flow rate. Because there is.
- FIGS. 13 to 16 show examples of a current starter having a means for suppressing the generation of the wind noise.
- each wake plate P i may be an annular plate-shaped rectifier 1 that is flat along the outer circumference ⁇ of the wake plate P i shown in FIG.
- the flow regulating plate 13 projects radially outward, and the turbulent flow of the fluid generated in the radially inner corrugated portion 10 flows along the flat plate rectifying portion 13.
- the fluid flow rectified in this way disturbs the stationary fluid outside the wake plate. ⁇ ⁇ y ⁇ Released to the outside without much disturbance.
- the width of the rectifying portion 13 is determined to be a width necessary for attenuating fluctuations in turbulent pressure and the like in accordance with the viscosity of the fluid, the state of the wave portion of the wake plate, the gap of the wake plate, and the like. .
- a rectifying portion similar to the annular plate-shaped rectifying portion 13 can be formed on the inner peripheral edge of the wake plate if necessary.
- the wake P lb has an annular plate-shaped rectifying portion 13 a also in the middle of the corrugated portion in the radial direction, and the first ⁇ P lb is also provided on the outer periphery ⁇ .
- a rectifier 13 similar to the rectifier shown in FIG. 4 is provided.
- the intermediate rectifying section 13a rectifies the fluid flowing along the waveform section at an intermediate portion.
- An annular rectification auxiliary plate 14 may be provided between the intermediate rectification sections 13a to further improve the rectification state.
- an annular rectification auxiliary member 14 may be provided between the rectification portions 13 on the outer peripheral edge.
- a rectification auxiliary plate may be provided between the rectification portions on the inner peripheral edge.
- the first 7 Figure shows the force flow plate P 2 formed was pieces 1 5-raised.
- Lug 1 5 is provided with a notch in a direction having a radial component to the force flow plate P 2, it is formed by causing the cut portion.
- an annular rectifying portion 14a is formed radially outside the cut and raised piece 15 in the radial direction.
- the cut-and-raised pieces 15 can also be used as spacers.
- the starting plate P of the starting device described above is shown in Fig. 18 As shown in the figure, the rotation axis may be slightly inclined with respect to the rotation axis 0-0. In this example, a pair of wake plates
- P chi, P y has a Okoshiryu plates P which somewhat inclined in a direction that will flow from the left and right suction fluid to easily flow into the gap between Okoshiryu flop rate.
- the wake plate P can be curved in addition to the inclination as shown in Fig. 19 according to the design conditions.
- a plurality of curved surfaces in opposite directions may be provided.
- This type of wake-up machine in which a number of wake-up plates are installed and rotated in parallel, is advantageous in that it does not generate wind noise (sounds generated by the blades crossing the air flow) unlike a blower.
- members such as rods connecting the wake plates cut off air.
- Wind noise can be caused by placing an object S in a flow of air or the like, as shown in Fig. 21, and creating a Karman vortex behind it, or by crossing the flow of air, etc., as shown in Fig. 22. This occurs particularly when S is moved in the direction of the arrow. A particularly loud wind noise is generated in the case of Fig. 22.
- Karman vortices as shown in Fig. 23, it is easy to make the object T streamline to the flow so that Karman vortices do not occur.
- connecting rod 16 penetrates the wake plate P to connect wake plate P, If the connecting means is provided between the wake-up plates, it seems that it acts on the fluid flowing between the wake-up plates as shown in Fig. 22 to generate sound. You. This is the case in region B of Fig. 4, ie outside the boundary layer. Fluid outside the boundary layer is almost independent of solid motion. However, it is different in the boundary layer of the A region. This is because it is within the influence of solid motion. The connection means between the wake plates using the boundary layer moves together with the solid surface called the plate (although there is a relative displacement) The relationship between the fluid in the boundary layer and the solid connection means with the solid In fact, it is not the relationship of Fig. 22, but actually the relationship of Fig. 21.
- the cross-sectional shape of the connecting member 16a should be designed so as to form a streamline with respect to the design trajectory 17 where the fluid flows along the surface of the wake plate P. I just need.
- the connecting member 16a does not cross the flow of the fluid, so that generation of noise can be suppressed.
- the use of the boundary layer is the greatest adverse effect of conventional blowers and other current generators, and is a source of various evils.Compare the phenomena in Fig. 22 where no countermeasures can be taken. It can be said that there is an effect in that it is replaced with the phenomenon shown in Fig. 21 which has a small influence and can easily take countermeasures.
- the connecting member 16a can be adjusted to rotate around the bin 18. In this way, the connecting material etc. By eliminating the effect, the low-pressure portion does not occur as a reaction of the high-pressure portion of the fluid generated by the tapping, and therefore, the generation of the cavitation which is a boiling phenomenon in the low-pressure portion with the liquid. Is also prevented.
- the current generator is a normal centrifugal type.
- the principle of the current generator of the present invention can be applied to a cross flow fan as shown in FIG. 26.
- 19 is a casing
- 19a is a projection
- 19b is another projection provided as required
- 20 is its discharge port.
- the use of the plate-shaped wake plate has an advantage that wind noise does not occur.
- a waveform as shown in FIG. 8 and a cut and rise shown in FIG. 17 can be formed on the wake plate.
- the direction of the curvature of this waveform should preferably be reversed with respect to the rotational direction in comparison with the case shown in Fig. 8 (in the case of a centrifugal motive device) in terms of flow rate.
- the gap between the wake-up plates is considered to be the optimum value from the viewpoint of only discharging the fluid radially outward. Good, but in the case of a cross flow fan, the conditions of inflow must be taken into account, and it must be the optimal value after balancing the inflow and outflow.
- the effective gap varies depending on the shape, size (pitch), etc. of the wave. In the case of (1), the optimum gap of the centrifugal type is about 1 ram, while the optimum gap of the centrifugal type is about 1 ram.
- the optimum gap is 1 mm regardless of the rotation speed.
- the configuration of the wake plate shown in FIGS. 14 to 17 can be adopted.
- the air flow rate is also proportional to the peripheral speed of the outer peripheral edge, that is, the number of revolutions, even in a cross flow fan.
- FIGS. 27 to 29 show other examples of a wake plate that can be used, for example, in a crossflow fan.
- This wake plate P Together with having an embodiment similar to waveform 1 0 a of FIG. 8, the projections R to continuously provided axially spaced a constant distance numerous Okoshiryu plates P 3 integrally includes I have.
- the protrusions R are provided at regular intervals in the circumferential direction in this embodiment, and have a cylindrical shape as shown in FIG. As shown in FIG. 29, these protrusions R are abutting against each other and joined at the butting surface, One 91 0 281 or all of the protrusion R through the mouth and the ends of the rod
- this plate P 3 is a normal centrifuge.
- the waveform of the wake plate has a triangular cross section in the previous example.
- the shape may be another polygonal shape.
- the waveform is close to the outer peripheral edge.
- the wake-up device can be used as a light-shielding mechanism.
- the wake plate ⁇ is attached to the light shielding wall 21.
- the object rotates around the rotation axis 0-0. This
- the wake-up device is used to block light and noise inside and outside Box 23.
- a current starter is used so that the noise of the driving noise source M2 such as the engine in the box 24 does not go out of the box 24.
- the priming device of the present invention is free from noise and cavitation, and has an optimal motive plate gap. Can be used to obtain similar flow rates. Further, by forming the above-mentioned wake-promoting means such as corrugation on the surface of the wake-up plate, more excellent performance can be obtained. Further, noise generation and noise can be reduced by special design of the connecting member. It is possible to minimize and reduce the occurrence of bites.
- This invention can be used for a blower, a pump, a ventilation light shielding device, and various other uses.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/772,371 US5297926A (en) | 1990-03-02 | 1991-03-02 | Flow generating apparatus and method of manufacturing the apparatus |
EP91905323A EP0471089B1 (en) | 1990-03-02 | 1991-03-02 | Device for generating fluid flow and method of manufacture thereof |
DE69111712T DE69111712T2 (de) | 1990-03-02 | 1991-03-02 | Fluidumströmungserzeugungsvorrichtung und zugehöriges herstellungsverfahren. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2/49468 | 1990-03-02 | ||
JP2049468A JPH03253794A (ja) | 1990-03-02 | 1990-03-02 | 起流機及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991013257A1 true WO1991013257A1 (fr) | 1991-09-05 |
Family
ID=12831974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1991/000281 WO1991013257A1 (fr) | 1990-03-02 | 1991-03-02 | Dispositif destine a produire un ecoulement de fluide et son procede de fabrication |
Country Status (7)
Country | Link |
---|---|
US (1) | US5297926A (ja) |
EP (1) | EP0471089B1 (ja) |
JP (1) | JPH03253794A (ja) |
AU (1) | AU638807B2 (ja) |
CA (1) | CA2054729C (ja) |
DE (1) | DE69111712T2 (ja) |
WO (1) | WO1991013257A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992016751A1 (fr) * | 1991-03-15 | 1992-10-01 | Toto Ltd. | Ventilateur a disque multicouche avec pales |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994010450A1 (en) * | 1992-10-26 | 1994-05-11 | Xeme Technology Inc. | Rotor for a transverse flow pump |
DE4319628A1 (de) * | 1993-06-15 | 1994-12-22 | Klein Schanzlin & Becker Ag | Strukturierte Oberflächen von Strömungsmaschinenbauteilen |
US5496149A (en) * | 1995-03-10 | 1996-03-05 | Basf Corporation | Thin plate turbine |
US6261052B1 (en) * | 1999-01-08 | 2001-07-17 | Fantom Technologies Inc. | Prandtl layer turbine |
US6224325B1 (en) * | 1999-01-08 | 2001-05-01 | Wayne Ernest Conrad | Prandtl layer turbine |
US6659169B1 (en) | 1999-12-09 | 2003-12-09 | Advanced Rotary Systems, Llc | Cooler for electronic devices |
TWI222344B (en) * | 1999-12-09 | 2004-10-11 | Advanced Rotary Systems Llc | Cooler for electronic devices |
US6779964B2 (en) | 1999-12-23 | 2004-08-24 | Daniel Christopher Dial | Viscous drag impeller components incorporated into pumps, turbines and transmissions |
US6375412B1 (en) | 1999-12-23 | 2002-04-23 | Daniel Christopher Dial | Viscous drag impeller components incorporated into pumps, turbines and transmissions |
US7341424B2 (en) * | 1999-12-23 | 2008-03-11 | Dial Discoveries, Inc. | Turbines and methods of generating power |
US6597719B1 (en) * | 2000-08-21 | 2003-07-22 | Komatsu Ltd. | Once through fan for gas laser apparatus and gas laser apparatus therewith |
US6368078B1 (en) * | 2000-11-27 | 2002-04-09 | John F. Palumbo | Bladeless turbocharger |
US6910483B2 (en) | 2001-12-10 | 2005-06-28 | Resmed Limited | Double-ended blower and volutes therefor |
US8517012B2 (en) | 2001-12-10 | 2013-08-27 | Resmed Limited | Multiple stage blowers and volutes therefor |
GB2394003A (en) * | 2002-10-10 | 2004-04-14 | Dana Automotive Ltd | Disc pump with a magnetic coupler |
AU2004244672B2 (en) * | 2003-06-10 | 2011-02-10 | Resmed Limited | Multiple stage blower and enclosure therefor |
WO2005024230A2 (en) * | 2003-09-04 | 2005-03-17 | University Of Utah Research Foundation | Rotary centrifugal and viscous pumps |
US7569089B2 (en) * | 2004-06-14 | 2009-08-04 | David Christopher Avina | Boundary layer propulsion and turbine apparatus |
WO2006121698A2 (en) * | 2005-05-05 | 2006-11-16 | Dial Discoveries, Inc. | Devices and methods for displacing biological fluids incorporating stacked disc impeller systems |
US20070140842A1 (en) * | 2005-11-23 | 2007-06-21 | Hill Charles C | High efficiency fluid movers |
US7455504B2 (en) * | 2005-11-23 | 2008-11-25 | Hill Engineering | High efficiency fluid movers |
KR101368611B1 (ko) * | 2007-07-09 | 2014-02-27 | 호리아 니카 | 접선 방향 로터 블레이드를 갖는 경계층 풍력 발전용 터빈 |
US20100111720A1 (en) * | 2008-11-06 | 2010-05-06 | Nicholas Andrew Hiner | High displacement air pump |
US8931481B2 (en) | 2009-06-04 | 2015-01-13 | Redmed Limited | Flow generator chassis assembly with suspension seal |
US8317460B1 (en) * | 2009-06-19 | 2012-11-27 | Randy D. Retherford | Boundary layer wind turbine |
US10352325B2 (en) * | 2012-10-29 | 2019-07-16 | Exhale Fans LLC | Laminar flow radial ceiling fan |
US9709069B2 (en) * | 2013-10-22 | 2017-07-18 | Dayspring Church Of God Apostolic | Hybrid drive engine |
US10947992B2 (en) * | 2015-08-17 | 2021-03-16 | Pedro Arnulfo Sarmiento | Convectors |
US10503220B2 (en) | 2016-04-14 | 2019-12-10 | Microsoft Technology Licensing, Llc | Viscous flow blower for thermal management of an electronic device |
US20170356462A1 (en) * | 2016-06-08 | 2017-12-14 | Nidec Corporation | Blower apparatus |
RU2617614C1 (ru) * | 2016-06-27 | 2017-04-25 | Закрытое акционерное общество "Путь 910" | Устройство и способ нагнетания давления текучей среды |
US11692443B2 (en) | 2016-09-08 | 2023-07-04 | Wesley Turbines Ip Limited | Boundary layer turbomachine |
RU2688058C1 (ru) * | 2018-06-19 | 2019-05-17 | Дмитрий Николаевич Спиркин | Устройство и способ нагнетания давления текучей среды |
WO2020081422A1 (en) * | 2018-10-15 | 2020-04-23 | The Regents Of The University Of Michigan | Optimizing pumping of variable viscosities via microtextured miniaturized tesla pump |
US11105343B2 (en) | 2018-12-14 | 2021-08-31 | Smith Flow Dynamics, LLC | Fluid-foil impeller and method of use |
CN110056964B (zh) * | 2019-05-10 | 2021-01-29 | 青岛海尔空调器有限总公司 | 壁挂式空调器室内机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS503110U (ja) * | 1973-05-04 | 1975-01-14 | ||
JPS5140282B2 (ja) * | 1974-10-18 | 1976-11-02 | ||
JPS5313921Y1 (ja) * | 1969-03-07 | 1978-04-14 | ||
JPS5479805A (en) * | 1977-12-07 | 1979-06-26 | Toshiba Corp | Blower |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1793179A (en) * | 1927-06-17 | 1931-02-17 | Lanterman Frank | Elastic-fluid turbine |
US2087834A (en) * | 1932-05-23 | 1937-07-20 | Chester W Brown | Fluid impeller and turbine |
US2321907A (en) * | 1941-05-31 | 1943-06-15 | Bell Telephone Labor Inc | Blower device |
US2632598A (en) * | 1950-04-05 | 1953-03-24 | Theodore Backer | Centrifugal blower |
US3017848A (en) * | 1960-11-14 | 1962-01-23 | Charles R Bishop | Boat propulsion unit |
US3226012A (en) * | 1963-10-28 | 1965-12-28 | Trask Allen | Centrifugal compressor |
US3275223A (en) * | 1964-08-03 | 1966-09-27 | American Radiator & Standard | Fluid moving means |
US3487784A (en) * | 1967-10-26 | 1970-01-06 | Edson Howard Rafferty | Pumps capable of use as heart pumps |
FR2292882A1 (fr) * | 1974-11-27 | 1976-06-25 | Liber Jean Claude | Machine tournante destinee a entrainer un fluide, utilisable, en particulier, comme ventilateur |
AU521460B2 (en) * | 1977-09-06 | 1982-04-01 | Johann Effenberger Ernst | Handheld hairdryer |
US4255081A (en) * | 1979-06-07 | 1981-03-10 | Oklejas Robert A | Centrifugal pump |
US4218177A (en) * | 1979-08-23 | 1980-08-19 | Robel Robb W | Cohesion type turbine |
SU973939A1 (ru) * | 1981-05-13 | 1982-11-15 | Appel Semen G | Молекул рный насос |
JPS5817359A (ja) * | 1981-07-23 | 1983-02-01 | Toshiba Corp | アレイ形超音波探触子の製造方法 |
GB2126653B (en) * | 1982-09-07 | 1986-06-11 | British Gas Corp | A method of assembling spaced discs of a centrifugal impeller |
-
1990
- 1990-03-02 JP JP2049468A patent/JPH03253794A/ja active Pending
-
1991
- 1991-03-02 US US07/772,371 patent/US5297926A/en not_active Expired - Fee Related
- 1991-03-02 EP EP91905323A patent/EP0471089B1/en not_active Expired - Lifetime
- 1991-03-02 CA CA002054729A patent/CA2054729C/en not_active Expired - Fee Related
- 1991-03-02 DE DE69111712T patent/DE69111712T2/de not_active Expired - Fee Related
- 1991-03-02 WO PCT/JP1991/000281 patent/WO1991013257A1/ja active IP Right Grant
- 1991-03-02 AU AU73114/91A patent/AU638807B2/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5313921Y1 (ja) * | 1969-03-07 | 1978-04-14 | ||
JPS503110U (ja) * | 1973-05-04 | 1975-01-14 | ||
JPS5140282B2 (ja) * | 1974-10-18 | 1976-11-02 | ||
JPS5479805A (en) * | 1977-12-07 | 1979-06-26 | Toshiba Corp | Blower |
Non-Patent Citations (1)
Title |
---|
See also references of EP0471089A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992016751A1 (fr) * | 1991-03-15 | 1992-10-01 | Toto Ltd. | Ventilateur a disque multicouche avec pales |
Also Published As
Publication number | Publication date |
---|---|
EP0471089A1 (en) | 1992-02-19 |
JPH03253794A (ja) | 1991-11-12 |
EP0471089B1 (en) | 1995-08-02 |
AU638807B2 (en) | 1993-07-08 |
CA2054729C (en) | 1998-04-28 |
AU7311491A (en) | 1991-09-18 |
EP0471089A4 (en) | 1992-07-22 |
CA2054729A1 (en) | 1991-09-03 |
DE69111712T2 (de) | 1996-01-18 |
DE69111712D1 (de) | 1995-09-07 |
US5297926A (en) | 1994-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1991013257A1 (fr) | Dispositif destine a produire un ecoulement de fluide et son procede de fabrication | |
AU2009203471B2 (en) | Propeller fan | |
EP2213882B1 (en) | Centrifugal fan | |
US6626640B2 (en) | Fan with reduced noise | |
US7473025B1 (en) | Mixing impeller with spiral leading edge | |
US6634855B1 (en) | Impeller and fan incorporating same | |
US20050186070A1 (en) | Fan assembly and method | |
JP2003232295A (ja) | 遠心ファンおよびその遠心ファンを備えた加熱調理器 | |
JP2001073995A (ja) | 送風機用羽根車 | |
RU2429386C2 (ru) | Вентиляторный блок со свободным радиальным рабочим колесом | |
JP2002106494A (ja) | 軸流ファン | |
JP3057166B2 (ja) | 起流機 | |
JPH09100795A (ja) | 空気調和機 | |
CN110657127B (zh) | 用于离心风机叶轮的叶片、离心风机叶轮及吸油烟机 | |
CN109915411A (zh) | 轴流风机及具有其的空调 | |
JPH06323237A (ja) | サボニウス風車 | |
JPH09296799A (ja) | 遠心圧縮機のインペラ | |
JP6768628B2 (ja) | 遠心圧縮機及びターボチャージャ | |
WO2021103050A1 (zh) | 风扇和电机 | |
JPH05340265A (ja) | ラジアルタービン動翼 | |
CN116249838B (zh) | 螺旋桨式风扇 | |
KR100437019B1 (ko) | 고추력 축류팬 | |
JP3881152B2 (ja) | 羽根車及び流体式トルク伝達装置 | |
KR102634097B1 (ko) | 와류 발생 장치를 구비한 임펠러 | |
RU88078U1 (ru) | Радиальное колесо центробежного нагнетателя |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AU CA US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1991905323 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2054729 Country of ref document: CA |
|
WWP | Wipo information: published in national office |
Ref document number: 1991905323 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1991905323 Country of ref document: EP |