WO2005003566A1 - 遠心ファン及びそれを用いた装置 - Google Patents
遠心ファン及びそれを用いた装置 Download PDFInfo
- Publication number
- WO2005003566A1 WO2005003566A1 PCT/JP2004/009083 JP2004009083W WO2005003566A1 WO 2005003566 A1 WO2005003566 A1 WO 2005003566A1 JP 2004009083 W JP2004009083 W JP 2004009083W WO 2005003566 A1 WO2005003566 A1 WO 2005003566A1
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- WO
- WIPO (PCT)
- Prior art keywords
- blades
- centrifugal fan
- main plate
- blade
- inner diameter
- Prior art date
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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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- 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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
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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
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
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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
- F04D29/68—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
Definitions
- the present invention relates to a centrifugal fan used for a ventilation blower, an air conditioner, a dehumidifier, a humidifier, or an air purifier.
- FIG. 15 is a side sectional view of a conventional centrifugal fan and a casing.
- Fig. 16 is a cross-sectional view of the main part, showing the state of air flow between the blades in the region of large air flow and low static pressure.
- Fig. 17 is a cross-sectional side view of the same, showing the effective work area in the large air flow and low static pressure area.
- Fig. 18 is a cross-sectional view of the main part, showing the state of air flow between the blades in the small air flow-high static pressure range.
- Fig. 19 is a cross-sectional view of the same, showing the state of air flow in the small air volume / high static pressure region.
- FIG. 20 is the performance characteristic diagram.
- the inside of the spiral casing ⁇ 04 has a bell mouth-shaped suction port 1 101 on one side, and has an inner diameter equivalent to the discharge port 110 3 and the inner diameter D 101 of the blade. Orifice 1 102.
- An annular side plate 1105 and a main plate 1 ⁇ 07 having a substantially frustoconical narrowed portion 1106 protruding on the side plate 1105 side are provided inside the thing 1104. ing.
- a plurality of blades 1109 are attached so as to be sandwiched between the side plate 1105 and the main plate 1107.
- the plurality of blades 1 1 0 9 have an inlet angle 0 1 0 1 of the blade inlet 1 1 0 8 and an outlet angle 0 1 0 2 of the blade outlet 1 1 0 9 from the side plate 1 ⁇ 0 5 side from the main plate 1 1 It is the same up to the 07 side.
- a multi-blade fan 1 1 1 1 is constituted by the main plate 1 107, the side plate 1 1 105, and a plurality of blades 1 1 109.
- the shaft 1 1 1 3 of the motor 1 1 1 2 attached to the casing 1 1 10 4 is connected to the main plate 1 0 7.
- the suction air 1 1 1 4 passes through the suction port 1 1 0 1 of the suction orifice 1 1 0 2 and the blade inlet. Flow into 1 108.
- the air that has flowed into the blade inlet 110 is pressurized between the blades 110 and flows out from the blade outlet 109.
- the dynamic pressure is gradually converted to static pressure, and is discharged to the discharge port 1103.
- the load (static pressure) on the multi-blade fan 111 changes depending on the length of the discharge duct connected to the discharge port 111, and the load changes from a large air flow and low static pressure to a small amount. Air flow ⁇
- FIG. 30 is a side sectional view of another conventional centrifugal fan and casing.
- FIG. 31 is a cross-sectional view of the main part, and
- FIG. 32 is a top view of the main part, similarly.
- the spiral casing 2104 has a bell mouth-shaped suction port 2101 on one side, and a small orifice 2102 and discharge port 2103 having the same inside diameter as the fan inside diameter.
- a flat main plate 2105 perpendicular to the rotation axis, a plurality of blades 210 arranged above and below the main plate 210, and both ends of the blade And a ring-shaped side plate 2107.
- the main plate 2105 has a ventilation hole 2108 through which air flows from the upper blade 210a side to the lower blade 210b side.
- the upper blade 210a and the lower blade 210b have different blade entrance angles 0201 and blade exit angles 0202.
- the shaft 210 of the motor 210 mounted on the casing 210 is connected to the main plate 210.
- a multi-blade fan is constituted by the main plate 2105, the side plate 2107, and the plurality of blades 2106.
- the suction air passes through the suction port 2101 of the orifice 2102 and flows into the blade inlet.
- the inflowing air is pressurized between the blades 210 and flows out from the blade outlet.
- the dynamic pressure is gradually converted to a static pressure, and is discharged to the discharge port 2103.
- the load (static pressure) on the multi-blade fan changes depending on the length of the discharge duct connected to the discharge port 210.
- the centrifugal fan has various operating points from a large air volume / low static pressure region to a small air volume / high static pressure region.
- the blade inlet angle and outlet angle are set at the upper and lower parts of the main plate to expand the main flow range biased to the main plate toward the side plate.
- This is a configuration in which different blades are arranged.
- the main stream flows through the ventilation holes to the lower blade. That is, when the main flow passes through the ventilation holes, collision with the main plate and an increase in the main flow velocity occur. Then, between the lower blades, the flow velocity is high, and peeling of the blade surface occurs. Therefore, there is a problem that the total pressure efficiency is low and the noise is high.
- the present invention has been made in view of the problems of the conventional example.
- the centrifugal fan of the present invention is the centrifugal fan of the present invention.
- a plurality of blades arranged annularly, the plurality of blades being sandwiched and integrated by an annular side plate and a main plate;
- the casing has a discharge port, and a bellmouth-shaped suction port having an inner diameter equivalent to the plurality of annularly arranged blades;
- a motor having a rotating shaft coupled to the main plate, and a motor fixed to the casing.
- Each of the plurality of blades has a plurality of uneven portions on at least one of the back side and the ventral side.
- the side plates of the blades are arranged on the suction port side. In the cross section perpendicular to the rotation axis of the blades, the concave and convex portions of the concave and convex portions are repeated from the front direction to the rear edge direction.
- centrifugal fan of the present invention is a centrifugal fan of the present invention.
- a plurality of blades arranged annularly, the plurality of blades being sandwiched and integrated by an annular side plate and a main plate;
- a casing having a plurality of annularly arranged blades therein, the casing having a discharge port, and a bell mouth-shaped suction port having an inner diameter equivalent to the plurality of annularly arranged blades;
- a motor having a rotating shaft coupled to the main plate, and a motor fixed to the casing.
- the outlet angles at the outer peripheral portions of the plurality of blades gradually differ from the main plate side to the side plate side.
- FIG. 1 is a side sectional view of a centrifugal fan and a casing according to Embodiment 1 of the present invention.
- FIG. 2 is a sectional view of the blade of the eccentric fan.
- FIG. 3 is an explanatory diagram showing the specifications of the uneven shape of the centrifugal fan.
- FIGS. 4A and 4B are explanatory diagrams showing the specifications of the uneven shape of the centrifugal fan.
- FIGS. 5A and 5B are explanatory diagrams showing installation forms and specifications of the unevenness of the centrifugal fan in the axial direction.
- FIGS. 6A to 6G are cross-sectional views of the blade for showing the uneven shape of the blade of the centrifugal fan.
- Fig. 7 is a performance characteristic diagram of the centrifugal fan.
- Fig. 8 shows the performance characteristics of the centrifugal fan.
- FIG. 9 is a sectional view of the blade shape of the centrifugal fan according to the second embodiment of the present invention.
- FIG. 10 is an explanatory diagram showing the specifications of the uneven shape of the centrifugal fan.
- FIGS. 11A and 11B are explanatory diagrams showing the specifications of the uneven shape of the centrifugal fan.
- FIGS. 12A and 12B are explanatory diagrams showing installation forms and specifications of the unevenness of the centrifugal fan in the axial direction.
- FIG. 13-3 is a cross-sectional view of the blade of the centrifugal fan, showing the uneven shape of the blade.
- FIG. 14 is a side sectional view of a centrifugal fan and a casing according to Embodiment 4 of the present invention.
- FIG. 15 is a side sectional view of a conventional centrifugal fan and a casing.
- FIG. 16 is a cross-sectional view of the relevant part.
- FIG. 17 is a side sectional view of the same.
- FIG. 18 is a cross-sectional view of the relevant part.
- FIG. 19 is a side sectional view of the same.
- FIG. 20 is a performance characteristic diagram.
- FIG. 21 is a side sectional view of the centrifugal fan and the casing according to the fifth embodiment of the present invention.
- FIG. 22 is a cross-sectional view of a main part of the blade shape of the centrifugal fan.
- FIGS. 23A and 23B are cross-sectional views of the essential parts showing blade specifications of the centrifugal fan.
- Fig. 24 is a performance characteristic diagram of the centrifugal fan.
- Figure 25 shows the performance characteristics of the centrifugal fan.
- FIG. 26 is a side sectional view of a centrifugal fan and a casing according to Embodiment 6 of the present invention.
- FIG. 27 is a cross-sectional side view of an essential part showing the specifications of the blade and main plate of the centrifugal fan.
- FIG. 28 is a side sectional view of a centrifugal fan and a casing according to Embodiment 7 of the present invention.
- FIG. 29 is a view of the back surface of the blade of the eighth embodiment of the present invention.
- FIG. 30 is a side sectional view of another conventional centrifugal fan and casing.
- FIG. 31 is a cross-sectional view of the relevant part.
- FIG. 32 is a top view of the relevant part. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a side sectional view of a centrifugal fan and a casing according to Embodiment 1 of the present invention.
- Figure 2 shows a cross section of the centrifugal fan in a direction perpendicular to the axis of rotation of the blade, and also shows the air flow.
- FIGS. 3 and 4A-B show specifications of the shape of the uneven portion provided on the blade.
- Figures 5A and 5B show the configuration and specifications of the uneven part in the axial direction.
- Figures 6A-G show the type of the shape of the uneven part provided on the blade. 7 and 8 show the performance characteristics in the present embodiment.
- the spiral casing 104 has a bell-mouth-shaped suction port 101 formed on one side, and a discharge port 103 and an orifice 100 having an inside diameter equivalent to the blade inside diameter D1.
- an annular side plate 105 and a main plate 107 having a substantially truncated cone-shaped narrowed portion 106 protruding toward the side plate 105.
- the plurality of blades ⁇ are attached by the side plate 105 and the main plate 107 so as to sandwich them.
- the plurality of blades 1 are arranged in a ring.
- the multi-blade fan 111 is constituted by the main plate 107, the side plate 105, and the plurality of blades 1.
- the shaft 113 of the motor 112 attached to the casing 104 is connected to the main plate 107.
- the suction air ⁇ 14 passes through the suction port 101 of the suction orifice 102 and flows into the blade inlet 9. I do.
- the air flowing into the blade inlet 9 is pressurized during the blade 1 and flows out from the blade outlet 8.
- the outflowing air further passes through the spiral casing 104, the dynamic pressure is gradually converted to a static pressure, and is discharged to the discharge port 103.
- the blade of blade 1 A plurality of uneven portions 6 are formed from the leading edge 4 toward the blade trailing edge 5. With this configuration, a minute vortex 7 is formed in the uneven portion 6.
- the separation of air generated on the back side 2 of the blade can be reduced, and the main flow range biased toward the blade rear side 3 can be extended to the blade back side 2.
- the turbulence of the flow from the blade outlet 8 can be minimized.
- the ratio of the depth h of the concave portion of the concave-convex portion 6 to the plate thickness t of the blade is set to 0.1 ⁇ h / t ⁇ 0.7.
- the ratio of the width f to the depth h of the concave portion of the concave-convex portion 6 is set to be 0.5 h ⁇ f ⁇ 2.5 h.
- the configuration is such that the ratio of the distance Y between the side plate 105 and the uneven portion in the rotation axis direction and the blade height H is 0.1 ⁇ Y / H ⁇ 1.0.
- the relationship between the distance X from the rotation center of the rotating shaft 1 1 3 to the starting point of the uneven portion 6 and the inner diameter D 1 of the fan (a plurality of annularly configured blades 1) and the outer diameter D 2 of the fan is D 1 It is configured so that ⁇ 2 X ⁇ D 1 + 0.35 (D 2-D 1).
- the configuration of the uneven portion 6 in the axial direction may be as shown in FIG. 5A or FIG. 5B.
- FIGS. 6A to 6G can be applied to the shape of the uneven portion 6 in a cross section perpendicular to the rotation axis of the blade.
- the shape of the uneven portion 6a shown in FIG. 6A is a continuous arc.
- the convex shape of the concave / convex portion 6b shown in FIG. 6B is an arc.
- Concave part 6c shown in Fig. 6C The part shape is a circular arc.
- the shape of the uneven portion 6d shown in FIG. 6D is a continuous substantially triangular shape.
- the concave shape of the concave / convex portion 6e shown in FIG. 6E is substantially triangular.
- the convex shape of the concave / convex portion 6f shown in FIG. 6F is substantially triangular.
- the shape of the uneven portion 6g shown in FIG. 6G is a continuous substantially square shape.
- FIG. 7 shows a comparison of performance characteristics between the present embodiment and the conventional example.
- the noise characteristics and the total pressure efficiency are improved over the entire region of the air volume-static pressure characteristics.
- 8 is a frequency characteristic of the noise during OP a- 4 1 0 m 3 / h.
- the sound pressure level near 2000 Hz is significantly reduced.
- FIG. 9 shows a cross section in a direction perpendicular to the rotation axis of the blade of the centrifugal fan according to Embodiment 2 of the present invention, and also shows the flow of air.
- FIG. 10 and FIG. 1A-B show specifications of the shape of the uneven portion provided on the blade.
- Fig. 12 AB shows the installation configuration and specifications in the axial direction of the uneven portion.
- FIGS. 13A to 13G are diagrams showing the types of shapes of the uneven portions provided on the blade.
- the same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. This embodiment is different from the first embodiment in the shape of the blade.
- the blade 1 of the present embodiment has a plurality of concave and convex portions 6 on the blade ventral side 3 from the blade front edge 4 side toward the blade rear side 5. Is formed. With this configuration, a minute vortex 7 is formed in the uneven portion 6 on the blade ventral side 3. As a result, in a small air flow and high static pressure region, separation of the airflow from the blade inlet 9 and development of the boundary layer can be suppressed. The turbulence of the flow coming out of 8 can be minimized.
- the ratio of the depth h of the concave portion of the concave-convex portion 6 to the plate thickness t of the blade is set to 0.1 ⁇ h / t ⁇ 0.7.
- the ratio of the width f to the depth h of the concave portion of the concave-convex portion 6 is set to be 0.5 h ⁇ f ⁇ 2.5 h.
- the ratio of the distance Y from the side plate 105 to the uneven portion in the rotation axis direction and the blade height H is 0.1 ⁇ Y / H ⁇ 1.0.
- the relationship between the distance X from the center of rotation of the rotating shaft 113 to the starting point of the uneven portion, the fan inner diameter D 1, and the fan outer diameter D 2 is D 1 ⁇ 2 X ⁇ D l +0.35 (D 2 -D 1).
- the configuration of the uneven portion 6 in the axial direction may be a configuration as shown in FIG. 12A or FIG. 12B.
- the shape of the uneven portion 6a shown in FIG. 7A is a continuous arc.
- the concave shape of the concave / convex portion 6b shown in FIG. 7B is an arc.
- the convex shape of the concave / convex portion 6c shown in FIG. 7C is a circular arc.
- the shape of the uneven portion 6d shown in FIG. 6D is a continuous substantially triangular shape.
- the concave shape of the concave / convex portion 6e shown in FIG. 6E is substantially triangular.
- the convex shape of the concave / convex portion 6f shown in FIG. 6F is substantially triangular.
- the shape of the uneven portion 6g shown in FIG. 6G is a continuous substantially square shape.
- the blade back side 2 of the blade 1 and the blade belly It is the same as Embodiments 1 and 2, except that uneven portions are formed on both sides of Side 3.
- an uneven portion is formed on the back side 2 of the blade 1 as in the first embodiment.
- An uneven portion is formed on the ventral side 3 of the blade as in the second embodiment.
- the separation of the flow from the blade inlet 9 and the development of the boundary layer can be suppressed, and the turbulence of the flow from the blade outlet 8 can be minimized.
- FIG. 14 is a diagram showing a side cross section of a centrifugal fan and a casing according to Embodiment 4 of the present invention.
- the blade 1 is configured such that its inner diameter increases from the main plate 107 to the side plate 105.
- the inner diameter has a tapered shape ⁇ 0. Since the inner diameter D1 of the blade and the inner diameter of the orifice 102 on the side of the side plate 105 become large, the axial flow velocity when passing through the orifice 102 is reduced, especially in a large air flow and low static pressure range.
- the flow velocity between the blades can be relatively reduced, and the separation and boundary layer development on the blade surface can be further suppressed.
- FIG. 21 is a side sectional view of the centrifugal fan and the casing according to the fifth embodiment of the present invention.
- Figure 22 shows the main section of the blade shape of the centrifugal fan, and also shows the air flow.
- Figure 23 A-B shows the specifications of the blade.
- FIG. 24 and FIG. 25 are performance characteristic diagrams in the present embodiment.
- the spiral casing 304 has a bell mouth-shaped suction port 301 on one side, and has an orifice 302 having an inner diameter equivalent to the inner diameter of the fan and a discharge outlet 303. Inside the casing 304, a main plate 202, a plurality of blades 205, and a ring-shaped side plate 203 are formed.
- the plurality of blades 205 are attached so as to be sandwiched between the side plate 203 and the main plate 202.
- the plurality of blades 201 are arranged annularly.
- the shaft 309 of the motor 310 attached to the casing 304 is connected to the main plate 202.
- a multi-blade fan is constituted by the main plate 202, the side plate 203, and the plurality of blades 205.
- the suction air passes through the suction port 301 of the orifice 302 and flows into the blade inlet.
- the inflowing air is pressurized between the blades 205 and flows out of the blade outlet.
- the outflowing air passes through the spiral casing 304, the dynamic pressure is gradually converted to a static pressure, and is discharged to the discharge port 303.
- part or all of the blade outlet 201 The blade is formed such that the blade outlet on the side of the main plate 202 advances in the rotational direction more than the blade outlet 201 on the side plate 203 side. That is, part or all of the blade outlet portion 201 of the blade 205 is sequentially twisted from the main plate 202 side to the side plate 203 side. Therefore, as shown in FIG. 22, the outlet angle i82 of the outlet of the blade outlet part 201 is different from the distance from the side plate 203. With this configuration, the main flow range 204 biased to the main plate 202 can be expanded toward the side plate 203 at the operating point of the large flow rate and the low static pressure region.
- the separation area of the blade outlet 201 is reduced by reducing the difference between the outlet angle / 32 of the blade outlet 1 on the side plate 203 and the outlet angle (5).
- turbulent noise can be reduced.
- the relationship between the distance ⁇ 1 from the side plate 3 at the start position of the axial direction twist and the blade height H is such that 0.2 ⁇ ⁇ ⁇ H.
- FIG. 24 shows a comparison of performance characteristics between the present embodiment and the conventional example.
- the noise characteristics and the total pressure efficiency are improved over the entire region of the air volume-static pressure characteristics.
- Fig. 25 shows the noise when OP a—4 ⁇ 0 m ⁇ h. This shows the frequency characteristics of the sound.
- the sound pressure level near 2000 Hz is significantly reduced.
- FIG. 26 is a side sectional view of a centrifugal fan and a casing according to the sixth embodiment of the present invention
- FIG. 27 is a diagram showing specifications of a blade and a main plate.
- the same components as those in the fifth embodiment are denoted by the same reference numerals, and description thereof is omitted.
- the relationship between the distance g 1 of the blade start point of the blade 205 and the center X of rotation of the shaft 310 and the outer diameter D 0 of the main plate 202 is D 0 ⁇ 2X 1 It is configured as follows. That is, the radius 0 0/2 of the main plate 202 is equal to or less than X 1.
- the main plate 202 side of the blade 205 has up to an end surface 206 of the main plate 2 on the side opposite to the side plate. That is, the outer diameter D O of the main plate 202 is larger than the fan inner diameter D 1.
- the increase in the flow velocity between the blades on the main plate 202 side is alleviated, and the turbulent noise due to the separation is reduced.
- the work amount of the blade 205 on the main plate 202 side is increased, and a decrease in aerodynamic performance can be prevented.
- a low-cost, high-efficiency, low-noise centrifugal fan 7 can be manufactured in a short time by using a simple die-cutting method.
- FIG. 28 is a diagram showing a side cross section of a centrifugal fan and a casing according to Embodiment 7 of the present invention.
- the inner diameter of the fan is configured to increase from the main plate 202 to the side plate 203. That is, as shown in FIG. 28, in the cross-sectional shape, the inner diameter has a tapered shape 208.
- the inner diameter of the fan D1 and the inner diameter of the orifice 302 become large, so the axial flow velocity when passing through the orifice 302 is reduced especially in a large air volume and low static pressure area.
- the radial flow at the time of flowing into the blade inlet portion 209 is promoted, and the effective work area of the blade 205 on the main plate 202 side is expanded to the side plate 202 side. Therefore, the flow velocity between the blades can be relatively reduced, and the separation on the blade surface and the formation of the boundary layer can be further suppressed.
- FIG. 29 is a diagram showing the state of the back surface of the blade.
- Embodiment 5-7 The same components as those in Embodiment 5-7 are denoted by the same reference numerals, and description thereof is omitted.
- the present embodiment is configured so that the surface of the back side 210 of the blade 205 of the fifth to seventh embodiments is roughened or has many irregularities. With this configuration, the main flow range biased toward the ventral side of the blade 205 between the blades is expanded to the region of the back side 210 of the blade 205, and the flow between the blades is made uniform. Then, turbulent noise and reduction in efficiency due to separation can be reduced.
- Industrial potential The eccentric fan according to the present invention reduces collision, separation, and boundary layer development between blades, performs work on the blade surface efficiently, and improves the total pressure efficiency of the fan.
- the generation of turbulent noise generated by collision, separation, and boundary layer development can be suppressed, and the generation of turbulence noise generated by separation, boundary layer development from the back of the blade can be suppressed. It is useful as a centrifugal fan used in ventilation ventilation equipment, air conditioning equipment, dehumidifiers, humidifiers, or air purifiers.
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Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/561,770 US7794198B2 (en) | 2003-06-23 | 2004-06-22 | Centrifugal fan and apparatus using the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2003-177979 | 2003-06-23 | ||
JP2003177979A JP3969354B2 (ja) | 2003-06-23 | 2003-06-23 | 遠心ファンおよびその用途 |
JP2003-274695 | 2003-07-15 | ||
JP2003274695A JP3966247B2 (ja) | 2003-07-15 | 2003-07-15 | 遠心ファン |
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WO2005003566A1 true WO2005003566A1 (ja) | 2005-01-13 |
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PCT/JP2004/009083 WO2005003566A1 (ja) | 2003-06-23 | 2004-06-22 | 遠心ファン及びそれを用いた装置 |
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US (1) | US7794198B2 (ja) |
WO (1) | WO2005003566A1 (ja) |
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US20090060730A1 (en) * | 2007-08-31 | 2009-03-05 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Centrifugal fan and impeller thereof |
US20090067991A1 (en) * | 2007-09-07 | 2009-03-12 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Cooling fan |
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JP4993792B2 (ja) * | 2010-06-28 | 2012-08-08 | シャープ株式会社 | ファン、成型用金型および流体送り装置 |
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JP5496132B2 (ja) * | 2010-07-16 | 2014-05-21 | 三菱重工業株式会社 | 多翼遠心ファンおよびそれを用いた空気調和機 |
JP5203478B2 (ja) * | 2011-03-02 | 2013-06-05 | シャープ株式会社 | 貫流ファン、成型用金型および流体送り装置 |
JP6071394B2 (ja) * | 2012-10-03 | 2017-02-01 | ミネベア株式会社 | 遠心式ファン |
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CN110206753B (zh) * | 2018-06-29 | 2024-07-09 | 华帝股份有限公司 | 一种用于吸油烟机的离心风轮 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51118108U (ja) * | 1975-03-20 | 1976-09-25 | ||
JPS6019994A (ja) * | 1983-07-14 | 1985-02-01 | Matsushita Seiko Co Ltd | 多翼送風機羽根車 |
JPS60166793A (ja) * | 1984-02-10 | 1985-08-30 | Ebara Corp | 遠心圧縮機の羽根車 |
JPS62271995A (ja) * | 1986-05-19 | 1987-11-26 | Matsushita Seiko Co Ltd | 多翼型羽根車 |
JPH02248693A (ja) * | 1989-03-23 | 1990-10-04 | Matsushita Seiko Co Ltd | 多翼ファン |
JPH074388A (ja) * | 1993-06-15 | 1995-01-10 | Matsushita Refrig Co Ltd | 遠心送風機の羽根車 |
JPH07247999A (ja) * | 1994-03-08 | 1995-09-26 | Matsushita Seiko Co Ltd | 多翼ファン |
JPH09195988A (ja) * | 1996-01-17 | 1997-07-29 | Daikin Ind Ltd | 多翼送風機 |
JP2002317797A (ja) * | 2001-04-19 | 2002-10-31 | Ishikawajima Harima Heavy Ind Co Ltd | 圧縮機翼とその圧力損失低減方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US465439A (en) * | 1891-12-15 | Island | ||
JPS51118108A (en) | 1975-04-10 | 1976-10-16 | Tokico Ltd | Nozzle for supplying liquid |
JPS5864895U (ja) | 1981-10-28 | 1983-05-02 | カルソニックカンセイ株式会社 | フアン |
DE3520218A1 (de) * | 1984-06-08 | 1985-12-12 | Hitachi, Ltd., Tokio/Tokyo | Laufrad fuer ein radialgeblaese |
JPH02114800U (ja) | 1989-03-01 | 1990-09-13 | ||
US5169290A (en) * | 1991-11-07 | 1992-12-08 | Carrier Corporation | Blade for centrifugal flow fan |
JPH06193593A (ja) * | 1992-12-24 | 1994-07-12 | Nisshinbo Ind Inc | 遠心送風機の羽根車 |
JPH0718431B2 (ja) * | 1993-02-18 | 1995-03-06 | 日清紡績株式会社 | 遠心送風機 |
JP2884562B1 (ja) | 1998-04-14 | 1999-04-19 | 木村工機株式会社 | 遠心式送風機の羽根車 |
JP2001032794A (ja) | 1999-07-21 | 2001-02-06 | Zexel Valeo Climate Control Corp | 遠心ファン |
JP3507758B2 (ja) | 2000-03-27 | 2004-03-15 | 松下エコシステムズ株式会社 | 多翼ファン |
JP4698818B2 (ja) | 2000-12-04 | 2011-06-08 | 三菱重工業株式会社 | 多翼送風機 |
-
2004
- 2004-06-22 WO PCT/JP2004/009083 patent/WO2005003566A1/ja active Application Filing
- 2004-06-22 US US10/561,770 patent/US7794198B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51118108U (ja) * | 1975-03-20 | 1976-09-25 | ||
JPS6019994A (ja) * | 1983-07-14 | 1985-02-01 | Matsushita Seiko Co Ltd | 多翼送風機羽根車 |
JPS60166793A (ja) * | 1984-02-10 | 1985-08-30 | Ebara Corp | 遠心圧縮機の羽根車 |
JPS62271995A (ja) * | 1986-05-19 | 1987-11-26 | Matsushita Seiko Co Ltd | 多翼型羽根車 |
JPH02248693A (ja) * | 1989-03-23 | 1990-10-04 | Matsushita Seiko Co Ltd | 多翼ファン |
JPH074388A (ja) * | 1993-06-15 | 1995-01-10 | Matsushita Refrig Co Ltd | 遠心送風機の羽根車 |
JPH07247999A (ja) * | 1994-03-08 | 1995-09-26 | Matsushita Seiko Co Ltd | 多翼ファン |
JPH09195988A (ja) * | 1996-01-17 | 1997-07-29 | Daikin Ind Ltd | 多翼送風機 |
JP2002317797A (ja) * | 2001-04-19 | 2002-10-31 | Ishikawajima Harima Heavy Ind Co Ltd | 圧縮機翼とその圧力損失低減方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090060730A1 (en) * | 2007-08-31 | 2009-03-05 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Centrifugal fan and impeller thereof |
US20090067991A1 (en) * | 2007-09-07 | 2009-03-12 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Cooling fan |
Also Published As
Publication number | Publication date |
---|---|
US7794198B2 (en) | 2010-09-14 |
US20060177304A1 (en) | 2006-08-10 |
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