WO2015083371A1 - Ventilateur et unité d'extérieur équipée de celui-ci - Google Patents

Ventilateur et unité d'extérieur équipée de celui-ci Download PDF

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Publication number
WO2015083371A1
WO2015083371A1 PCT/JP2014/006016 JP2014006016W WO2015083371A1 WO 2015083371 A1 WO2015083371 A1 WO 2015083371A1 JP 2014006016 W JP2014006016 W JP 2014006016W WO 2015083371 A1 WO2015083371 A1 WO 2015083371A1
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WO
WIPO (PCT)
Prior art keywords
blade
fixed
stationary
outer peripheral
hub
Prior art date
Application number
PCT/JP2014/006016
Other languages
English (en)
Japanese (ja)
Inventor
木田　琢己
杉尾　孝
司 石曽根
優 塩谷
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2013250816A external-priority patent/JP6229157B2/ja
Priority claimed from JP2013250815A external-priority patent/JP6225332B2/ja
Priority claimed from JP2014026142A external-priority patent/JP6295414B2/ja
Priority claimed from JP2014059567A external-priority patent/JP6295420B2/ja
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Priority to CN201480066248.6A priority Critical patent/CN105793578B/zh
Publication of WO2015083371A1 publication Critical patent/WO2015083371A1/fr

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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/541—Specially adapted for elastic fluid pumps
    • F04D29/542—Bladed diffusers
    • F04D29/544—Blade shapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/38—Fan details of outdoor units, e.g. bell-mouth shaped inlets or fan mountings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/46—Component arrangements in separate outdoor units
    • F24F1/48—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow
    • F24F1/50—Component arrangements in separate outdoor units characterised by air airflow, e.g. inlet or outlet airflow with outlet air in upward direction

Definitions

  • the present invention relates to an air blower, particularly one mounted on an outdoor unit of a refrigeration apparatus such as an air conditioner or a heat pump type hot water heater.
  • FIG. 13 is a block diagram showing a conventional outdoor unit.
  • the outdoor unit 101 includes a propeller fan 105, a mouth ring 106 provided on the outer periphery of the propeller fan 105, and a static pressure collection vane 107 provided inside the mouth ring 106 on the discharge side of the propeller fan 105. I have.
  • the mouth ring 106 is located on the trailing edge side, which is the blowing side of the propeller fan 105, and guides the blown air flow.
  • An enlarged blowing port 106a having a larger diameter than the front part is provided at the rear part of the mouth ring 106. Is formed.
  • the static pressure recovery vane 107 is located downstream from the rear edge of the propeller fan 105. The chord length of the static pressure recovery vane 107 is formed so as to increase from the center toward the outer periphery.
  • the static pressure recovery vane 107 collects the swirling flow that causes energy loss in the circumferential direction as a static pressure, so that the axial flow rate can be increased. Further, since the swirl flow from the propeller fan 105 can be decelerated by the static pressure recovery vane 107, noise can be reduced.
  • the mainstream is concentrated from the substantially central position to the outer peripheral side at the radial position of the blades.
  • the directional component also increases, and the inflow speed from the wake of the rotor blade increases.
  • the leakage flow between the rotating blades of the propeller fan 105, which is a moving blade, and the mouth ring 106 called an orifice, and the influence of the tip vortex generated at the tip of the moving blade are affected by the downstream static pressure recovery vane 107. Reach the leading edge. This influence is particularly great from the center of the stationary blade to the outer peripheral edge. For this reason, if the chord length at the outer peripheral end of the static pressure recovery vane 107 is large as in the prior art, the effect of hindering the flow increases, and the loss due to turbulence only increases, effectively reducing the swirl direction component. The problem was that it could not be recovered as pressure.
  • the leading edge or the trailing edge of the fixed blade depends on the mounting angle or shape of the stationary blade such as the static pressure recovery vane 107. Etc., there will be a horizontal part. When such a horizontal part exists, there existed the following subjects.
  • the rotating blades (moving blades) of a blower such as the propeller fan 105 used in the conventional outdoor unit having the stationary blades on the downstream side of the moving blades have the following problems. That is, depending on the position and shape of the stationary blade, when the stationary blade or the blowing grill is pressed strongly toward the moving blade side, the stationary blade such as the static pressure recovery vane 107 of the stationary blade comes into contact with the moving blade, and the moving blade or the stationary blade could be deformed or damaged.
  • the present invention improves aerodynamic performance such as low noise and large airflow in an axial flow type or diagonal flow type blower used in an outdoor unit of an air conditioner or heat pump water heater.
  • an outdoor unit equipped with a blower realizes power saving and low noise.
  • the present invention is an axial flow type or diagonal flow type blower used for an outdoor unit of an air conditioner or a heat pump water heater. Is to prevent. In addition, in an outdoor unit equipped with a blower, it prevents the generation of abnormal noise due to the generation and growth of ice, and the stop and breakage of moving blades.
  • the present invention is an axial flow or mixed flow type blower having a stationary blade on the downstream side of a low moving blade, and when the stationary blade is strongly pushed toward the moving blade side, the fixed blade is moved to the moving blade. It is intended to prevent touching. Further, in an outdoor unit equipped with a blower, the stationary blades are prevented from coming into contact with the moving blades when the stationary blades or the blowout grill are strongly pressed toward the moving blades.
  • the present invention is an axial flow or mixed flow type blower having a stationary blade on the downstream side of a low moving blade, and when the stationary blade is strongly pushed toward the moving blade side, the fixed blade is moved to the moving blade. It is intended to prevent touching. Further, in an outdoor unit equipped with a blower, the stationary blades are prevented from coming into contact with the moving blades when the stationary blades or the blowout grill are strongly pressed toward the moving blades.
  • the blower of the present invention includes a moving blade and a stationary blade, and the stationary blade of the stationary blade has a blade mounting angle with respect to a plane perpendicular to the central axis on the outer peripheral side from the central portion in the radial direction of the stationary blade. Larger than the blade mounting angle on the fixed hub side.
  • the collision loss at the inlet of the stationary blade of the stationary blade can be suppressed to a small value on the outer peripheral side from the center portion of the stationary blade of the stationary blade, and the swirl direction component can be efficiently recovered to the static pressure.
  • the aerodynamic performance of the blower of the present invention is improved.
  • the outdoor unit equipped with the blower of the present invention can realize power saving and noise reduction.
  • the blower of the present invention includes a moving blade, an orifice, and a stationary blade.
  • the stationary blade of the stationary blade has an axial position at the outer peripheral end of the leading edge that is an edge on the suction side of the stationary blade. It is provided so as to be positioned between the small diameter portion and the discharge side opening.
  • the aerodynamic performance of the blower of the present invention is improved.
  • the outdoor unit equipped with the blower of the present invention can realize power saving and noise reduction.
  • the blower of the present invention includes a moving blade and a stationary blade, and the stationary blade is provided in a region where the front edge, which is the suction side edge of the fixed blade, is located below the rear edge, which is the blowing side edge.
  • the distance between the fixed blades is larger than the distance between the fixed blades provided in the region where the front edge is located above the rear edge.
  • This configuration makes it easy to collect water droplets, reduces the horizontal part that is the starting point of ice generation and growth, and eliminates the occurrence of abnormal noise due to ice generation and growth, and stops and breaks the blades.
  • the swirl direction component can be recovered to static pressure well.
  • the blower of the present invention can prevent the generation and growth of ice. Further, the outdoor unit equipped with the blower of the present invention does not generate abnormal noise due to the generation or growth of ice, or stop or break the moving blade.
  • the blower of the present invention includes a moving blade and a stationary blade
  • the stationary blade includes an annular support frame centered on the rotation axis on the outer periphery, and the support frame and the orifice are fixed.
  • This configuration can prevent the stationary blade from coming into contact with the moving blade when the stationary blade is strongly pushed toward the moving blade side, thereby deforming or damaging the moving blade or the stationary blade.
  • the blower of the present invention can prevent the stationary blade from coming into contact with the moving blade and deforming or damaging the moving blade or the stationary blade. Moreover, the outdoor unit equipped with the blower of the present invention can prevent the moving blade and the stationary blade from being deformed or damaged.
  • FIG. 1 is a meridional sectional view of a blower according to a first embodiment of the present invention.
  • FIG. 2 is a front view of the blower as viewed from the discharge side according to the first embodiment of the present invention.
  • 3A is a cross-sectional view taken along the line 3A-3A in FIG. 3B is a cross-sectional view taken along the line 3B-3B of FIG. 3C is a cross-sectional view taken along the line 3C-3C in FIG.
  • FIG. 4 is an explanatory diagram showing the relationship between the radial position of the fixed blade of the blower and the blade mounting angle in the first embodiment of the present invention.
  • FIG. 5 is a perspective view of a principal part showing a connection portion between the fixed blade and the support frame in the first embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of the outdoor unit equipped with the blower according to the first embodiment of the present invention.
  • FIG. 7 is a longitudinal sectional view of another outdoor unit equipped with the blower according to the first embodiment of the present invention.
  • FIG. 8 is a configuration diagram of the blower according to the second embodiment of the present invention.
  • FIG. 9 is a front view as seen from the discharge side of the blower according to the second embodiment of the present invention.
  • FIG. 10 is a front view seen from the discharge side of the blower according to the third embodiment of the present invention.
  • FIG. 11 is the front view seen from the discharge side of the air blower in the 4th Embodiment of this invention.
  • FIG. 12 is the front view seen from the discharge side of the air blower in the 5th Embodiment of this invention.
  • FIG. 13 is a longitudinal sectional view of an outdoor unit of a conventional air conditioner.
  • FIG. 1 is a meridional sectional view of a blower according to a first embodiment of the present invention.
  • the meridional sectional view is a sectional view obtained by rotationally projecting the rotating blade 4 of the moving blade 5 and the fixed blade 7 of the stationary blade 8 on a plane including the rotational axis 2 of the moving blade 5 or the central axis of the stationary blade 8.
  • FIG. 2 is a front view as seen from the discharge side of the blower in the present embodiment.
  • the blower 1 includes a rotating hub 3 attached to a rotating shaft 2 and a moving blade 5 having two rotating blades 4 provided around the rotating hub 3. .
  • a stationary blade 8 On the discharge side (downstream side) of the moving blade 5, there is provided a stationary blade 8 having a fixed hub 6 coaxially positioned with the rotating hub 3 and 13 fixed blades 7 provided around the fixed hub 6. It has been. Further, an orifice 9 is provided at a position corresponding to the outer periphery on the discharge side of the moving blade 5 and the outer periphery on the suction side (upstream side) of the stationary blade 8 with a predetermined gap from the moving blade 5 and the stationary blade 8. Yes.
  • the rotary shaft 2 is provided on the suction side of the rotor blade 5 and is connected to a drive shaft of a motor 10 that rotationally drives the rotor blade 5. Since the motor 10 and the orifice 9 are both supported by a housing (not shown), the relative positions of the moving blade 5 and the orifice 9 are adjusted and held. In addition, the fixed blade 7 is supported by a housing (not shown) via the support frame 11 so that the relative positions of the stationary blade 8 and the orifice 9 are adjusted and held.
  • the support frame 11 is an annular member provided on the outer peripheral side of the stationary blade 8 and is formed integrally with the stationary blade 8.
  • the rotating hub 3 of the moving blade 5 has a cylindrical shape or a truncated cone shape whose diameter increases toward the discharge side.
  • the axial length of the rotating hub 3 is the height of the meridional plane at the center of the rotating blade 4 in the radial direction (when the rotating blade 4 of the moving blade 5 is rotated and projected onto a plane including the rotating shaft 2 of the moving blade 5).
  • the length in the axial direction is shorter than h1.
  • the stationary hub 6 of the stationary blade 8 has a cylindrical shape, and its outer diameter is the same as the diameter at the discharge-side end face of the rotating hub 3, that is, the largest diameter of the rotating hub 3.
  • the axial length of the fixed hub 6 is shorter than that of the rotating hub 3.
  • the axial length of the fixed hub 6 is the meridian height of the fixed blade 7 (the axial length when the fixed blade 7 of the stationary blade 8 is rotationally projected onto a plane including the central axis of the stationary blade 8) h2. Is almost the same.
  • the outer diameter of the stationary blade 8 is larger than the outer diameter of the moving blade 5. That is, the radial length of the fixed blade 7 is configured to be longer than the radial length of the rotary blade 4.
  • the orifice 9 has a minimum diameter portion 9x.
  • the minimum diameter portion 9x In the minimum diameter portion 9x, the gap between the rotor blade 5 and the outer peripheral end of the rotary blade 4 is minimized.
  • the minimum diameter portion 9x is configured as a cylindrical surface having a straight portion extending in the axial direction with a constant diameter, but is configured as a constant diameter circumference without the straight portion. You may do it.
  • the diameter of the orifice 9 increases from the minimum diameter portion 9x to the discharge side, and a discharge side opening 9y is formed at the end on the discharge side.
  • the diameter of the orifice 9 increases from the minimum diameter portion 9x to the suction side, and a suction side opening 9z is formed at the end on the suction side.
  • the moving blade 5 is adjusted in its axial position so that the outer peripheral end of the trailing edge, which is the discharge-side edge of the rotary blade 4, faces the minimum diameter portion 9 x of the orifice 9.
  • the moving blade 5 is positioned such that the discharge side end of the rotary hub 3 faces the minimum diameter portion 9x of the orifice 9, or between the minimum diameter portion 9x of the orifice 9 and the discharge side opening 9y.
  • the position in the axial direction is adjusted.
  • the stationary blade 8 has its axial position adjusted so that the outer peripheral end of the leading edge, which is the suction side edge of the fixed blade 7, is located between the minimum diameter portion 9 x of the orifice 9 and the discharge side opening 9 y. ing. Further, the stationary blade 8 is provided so as to form a predetermined gap S between the outer peripheral end on the front edge side of the fixed blade 7 and the orifice 9. Since the outer diameter of the stationary blade 8 is larger than the outer diameter of the moving blade 5 and the diameter of the orifice 9 increases toward the discharge side, the clearance S is formed at the outer peripheral end of the trailing edge of the rotating blade 4 of the moving blade 5. And the gap between the minimum diameter portion 9x of the orifice 9 and substantially the same. The stationary blade 8 is adjusted in the axial direction so that the suction side end of the fixed hub 6 is positioned between the minimum diameter portion 9x of the orifice 9 and the discharge side opening 9y.
  • the meridional height h2 of the fixed vane 7 is configured to be substantially constant from the fixed hub side end 7a, which is the end on the fixed hub 6 side, to the outer peripheral end 7b.
  • the front edge of the fixed blade 7 on the surface perpendicular to the rotating shaft 2 of the moving blade 5 is such that the outer peripheral end 7b of the rotating blade 4 of the moving blade 5 with respect to the fixed hub side end 7a. It is inclined with respect to the radial direction so as to be positioned in the counter-rotating direction.
  • 3A is a cross section taken along the line 3A-3A in FIG. 1, and is a cross section on the hub side.
  • 3B is a 3B-3B cross section of FIG. 1, and is a cross section on the outer peripheral side.
  • 3C is a 3C-3C cross section of FIG. 1, and is a cross section of the outer peripheral end.
  • 3A to 3C are diagrams showing the cross-sectional shapes of the rotary blade 4 and the fixed blade 7 at the same radial position, and the relationship between the air flow discharged from the moving blade 5 and the blade mounting angle ⁇ of the fixed blade 7. It is.
  • the blade attachment angle ⁇ is an angle with respect to a plane perpendicular to the rotation axis 2.
  • FIG. 4 is a diagram illustrating the relationship between the radial position of the fixed blade 7 and the blade mounting angle ⁇ .
  • the rotating blade 4 has an arc shape or a blade-shaped cross section that is convex in the counter-rotating direction of the moving blade 5, and the rotating blade trailing edge 4a is located on the discharge side. In this way, it is inclined with respect to the rotating shaft 2 and fixed to the rotating hub 3.
  • the fixed blade 7 has an arc shape or a blade-shaped cross section that is convex in the rotating direction of the moving blade 5, and is a fixed shaft that is also the central axis of the stationary blade 8 so that the leading edge 7 c is located on the suction side.
  • the blade 6 is fixed to the fixed hub 6 with a blade mounting angle ⁇ inclined with respect to a plane perpendicular to the central axis of the hub 6.
  • the blade attachment angle ⁇ is formed by a straight line connecting the front edge 7c, which is the suction side edge of the fixed blade 7, and the rear edge 7d, which is the discharge side edge, and a horizontal plane perpendicular to the central axis of the fixed hub 6.
  • the angle is an angle that increases from the horizontal plane perpendicular to the central axis of the fixed hub 6 toward the suction side or the counter-rotation direction side of the rotor blade 5.
  • the blade mounting angle ⁇ of the fixed blade 7 is configured to be different depending on the position of the fixed blade 7 in the radial direction.
  • the blade mounting angle ⁇ a is minimized at the end where the fixed blade 7 and the fixed hub 6 are in contact (fixed hub side end 7a). Then, the blade attachment angle ⁇ increases as it goes to the outer peripheral side of the fixed blade 7 in the radial direction, and becomes a blade attachment angle ⁇ m at the central portion 7m of the fixed blade 7, as shown in FIG. As it goes further to the outer peripheral side than the central portion 7m, the blade mounting angle ⁇ is further expanded, and is maximized between the central portion 7m and the outer peripheral end 7b of the fixed blade 7 as shown in FIG. 3B and FIG. Angle ⁇ b).
  • the blade mounting angle ⁇ gradually decreases further on the outer peripheral side than the position where the blade mounting angle ⁇ b is reached, and reaches the blade mounting angle ⁇ c at the outer peripheral end 7b of the fixed blade 7 as shown in FIGS. 3C and 4.
  • the blade attachment angle ⁇ c is larger than the blade attachment angle ⁇ a at the fixed hub side end 7a and smaller than the blade attachment angle ⁇ m at the center portion 7m.
  • the blade mounting angles ⁇ b and ⁇ c on the outer peripheral side from the central portion 7m are larger than the blade mounting angles ⁇ ab on the fixed hub 6 side from the central portion 7m.
  • the blade attachment angle ⁇ b is maximized on the outer peripheral side from the central portion 7m.
  • the meridional height of the fixed blade 7 is substantially constant regardless of the position in the radial direction, and the blade mounting angle ⁇ of the fixed blade 7 varies depending on the position in the radial direction.
  • the curvature of the arc is the smallest at the fixed hub side end 7a in contact with 6, and the curvature of the arc is maximized between the central portion 7m and the outer peripheral end 7b.
  • the curvature of the arc of the fixed blade 7 at the outer peripheral end 7b is larger than the curvature of the arc at the fixed hub side end 7a and smaller than the curvature of the arc at the central portion 7m.
  • the curvature of the arc on the outer peripheral side from the center portion 7m is larger than the curvature of the arc on the fixed hub 6 side from the center portion 7m.
  • FIG. 5 is a perspective view of a principal part of the connecting portion between the stationary blade 7 of the stationary blade 8 and the support frame 11 as viewed from the rear edge 7d side of the stationary blade 7.
  • FIG. 5 the outer peripheral end 7 b of the fixed blade 7 is provided with a plate-like extension portion 12 that extends the fixed blade 7 in the radial direction only on the rear edge 7 d side of the fixed blade 7.
  • One surface of the extension portion 12 (the surface on the concave side of the fixed blade 7) is formed with the same curvature as the concave side of the arc of the fixed blade 7, while the back surface is parallel to the central axis of the fixed hub 6. It is formed with.
  • the thickness of the extension portion 12 is the same as the thickness of the fixed blade 7 at the extension portion trailing edge 12a, but is formed so as to increase toward the extension portion front edge 12b side.
  • the length (the meridional section height) of the extension 12 in the central axis direction is formed to be shorter than the length of the leg 13 described later in the central axis direction. Further, the height of the meridional section of the extension 12 is formed to be substantially constant regardless of the position in the radial direction.
  • the support frame 11 is provided with a leg portion 13 protruding to the discharge side.
  • the leg portion 13 is a plate-like member having both surfaces formed in parallel with the central axis of the fixed hub 6, and the thickness of the leg portion 13 is the same as the thickness of the fixed blade 7. Further, the length of the leg portion 13 in the central axis direction is formed to be shorter than the meridian surface height h2 of the fixed blade 7. Further, as shown in FIG. 1, the leg portion 13 is provided so as to support the fixed blade 7 at a radial position on the outer peripheral side from the discharge side opening 9 y of the orifice 9.
  • a predetermined gap T is formed between the front edge 7 c side of the fixed blade 7 and the support frame 11 by joining the outer peripheral side end portion of the extension portion 12 and the end portion of the leg portion 13 on the fixed hub 6 side. Then, it is supported by the support frame 11.
  • the fixed blade 7, the extension portion 12, the leg portion 13, and the support frame 11 are integrally formed in order to ensure strength.
  • the end portion 13 a on the blowing side of the leg portion 13 is joined so as to be positioned on the same plane as the extending portion rear edge 12 a of the extending portion 12 and the rear edge 7 d of the fixed blade 7. Is done. For this reason, the front edge 7 c of the fixed blade 7 projects from the support frame 11 toward the suction side. Further, the rear edge 7d of the fixed blade 7 protrudes from the support frame 11 to the discharge side.
  • the length at which the extension 12 connects the fixed blade 7 and the support frame 11 (the length in the radial direction of the extension 12) varies depending on the position where the fixed blade 7 is attached.
  • the extension 12 of the fixed blade 7 located on the top, bottom, left and right in the direction of gravity is short, and the extension of the other fixed blade 7 is long. With this configuration, it is easy to secure sufficient strength to hold the stationary blade 8 on the support frame 11.
  • the stationary blade 7 of the stationary blade 8 is fixed to the orifice 9 or the casing through an annular support frame 11 centering on a rotation shaft provided on the outer periphery thereof. Therefore, even when the stationary blade 8 is pushed in the direction of the moving blade 5, a predetermined gap between the stationary blade 8 and the moving blade 5 can be maintained, and the stationary blade 7 of the stationary blade 8 It is possible to prevent the moving blade 5 and the stationary blade 8 from being deformed or damaged by coming into contact with the rotating blade 4 of the moving blade 5.
  • the plurality of fixed blades 7 include an extension portion 12 and a leg portion 13 extending from the outer peripheral end of the extension portion 12 in the direction of the orifice 9, and the extension portion 12 and the leg portion 13 are interposed therebetween.
  • the extension portion 12 and the leg portion 13 absorb the displacement, and the moving blade 5 and the stationary blade 8 are deformed or damaged. Can be prevented.
  • the air (discharged airflow) discharged from the moving blade 5 is guided to the stationary blade 8.
  • the inflow velocity V of air guided to the stationary blade 8 has an angle with respect to the axial direction of the rotating shaft 2, and the axial flow direction component Va flowing in the axial direction and the moving blade 5 And a turning direction component Vt flowing in the rotation direction.
  • the axial flow direction component Va is a speed related to the air volume, but the swirl direction component Vt is perpendicular to the axial direction, that is, a circumferential direction component, and thus is not related to the air volume, but merely stirs the air. If it is not smoothly turned in the axial direction, the energy is lost.
  • the stationary blade 8 having a plurality of fixed blades 7 the swirl direction component of the discharge airflow of the moving blade 5 is reduced, and the swirl direction component (swirling flow) that causes energy loss is recovered as a static pressure.
  • the air blowing action is achieved while improving the efficiency.
  • the blade mounting angle ⁇ of the fixed blade 7 is a blade on the fixed hub 6 side from the central portion 7m in accordance with the discharge airflow of the moving blade 5 where the main flow is concentrated on the outer peripheral side from the radial center portion of the rotary blade 4.
  • the blade mounting angle ⁇ b on the outer peripheral side of the central portion 7m is made larger.
  • the collision loss at the inlet of the fixed blade 7 is smaller in the region on the outer peripheral side than the central portion 7m where the swirl direction component at the inlet of the stationary blade 8 is larger than the region on the fixed hub 6 side from the central portion 7m. In this way, the turning speed component can be efficiently recovered to static pressure.
  • the moving blade 5 is an axial flow type or a mixed flow type and only the discharge side of the rotating blade 4 of the moving blade 5 is surrounded by the orifice 9, a large blade tip vortex is formed on the outer periphery of the rotating blade 4. Occurs, and the discharge air velocity on the outer peripheral side of the rotor blade 5 is greatly reduced.
  • the axial component of the discharge airflow is greatly reduced.
  • the blade mounting angle ⁇ is maximized between the central portion 7m of the fixed blade 7 and the outer peripheral end 7b, and the blade mounting angle at the outer peripheral end 7b of the fixed blade 7 is adjusted accordingly. Since ⁇ c is made smaller than the blade mounting angle ⁇ m at the central portion 7m, the collision loss at the inlet of the fixed blade 7 at the outer peripheral end 7b of the fixed blade 7 of the stationary blade 8 can be suppressed to be small.
  • the blade mounting angle ⁇ of the fixed blade 7 In the region from the fixed hub side end 7a of the fixed blade 7 to the portion where the blade mounting angle ⁇ on the outer peripheral side is the maximum, the blade mounting angle ⁇ of the fixed blade 7, particularly the inlet angle, matches the discharge air flow angle of the moving blade 5. Therefore, the swirl velocity component of the airflow discharged from the moving blade 5 can be efficiently converted to a static pressure without increasing the meridional height h2 of the fixed blade 7 and increasing the chord length.
  • chord length can be suppressed without extending toward the outer peripheral side of the fixed blade 7, and the increase in loss due to the surface friction loss of the fixed blade 7 and the increase in the wake width of the wake can be suppressed.
  • the meridional height h2 of the fixed blade 7 is provided so as to be substantially constant from the fixed hub side end 7a to the outer peripheral end 7b, so that the vicinity of the outer peripheral end 7b of the fixed blade 7 However, it can be suppressed without increasing the meridian height.
  • the fixed blade 7 is provided on the plane perpendicular to the rotating shaft 2 of the moving blade 5 such that the outer peripheral side is inclined in the counter-rotating direction of the moving blade 5 with respect to the hub side.
  • the discharge airflow passes at different timings depending on the radial position of the fixed blade 7. For this reason, the noise generated when the discharge airflow passes through the fixed blade 7 can be shifted, and the noise generated when passing through the stationary blade 8 can be reduced.
  • a predetermined gap between the outer peripheral end of the rotating blade 4 of the moving blade 5 and the orifice 9 expands from the minimum diameter portion 9x toward the discharge side opening 9y, and in front of the fixed blade 7 of the stationary blade 8.
  • the axial position of the outer peripheral edge of the edge is provided so as to be positioned between the minimum diameter portion 9x of the orifice 9 and the discharge side opening 9y.
  • the contracted flow is less likely to occur on the rear edge 7d side of the outer peripheral end 7b and can be efficiently recovered as a static pressure.
  • the slight leakage flow from the pressure surface side to the negative pressure side in the gap S can be smoothly decelerated along the expanding discharge side opening 9y on the discharge side of the orifice 9, so that the flow loss increases. There is nothing.
  • a turbulent tip vortex generated in the vicinity of the outer peripheral end of the rotary blade 4 flows downstream, and is disturbed when it collides with the extension portion 12 from the outer peripheral side of the fixed blade 7.
  • the stationary blade 8 is fixed to the support frame 11 by the extended portion 12 in which only the rear edge 7 d side of the outer peripheral end 7 b of the fixed blade 7 is extended, and the front edge 7 c of the fixed blade 7.
  • the side is not fixed to the support frame 11. That is, the extension portion 12 is positioned on the rear edge side of the fixed blade 7. For this reason, the turbulence of the airflow in the extension part 12 can be reduced on the front edge 7 c side of the fixed blade 7.
  • a predetermined gap T is provided between the outer peripheral end of the stationary blade 7 on the front edge 7c side of the fixed blade 7 and the support frame 11.
  • a slight leakage flow can be intentionally generated from the pressure surface side to the suction surface side of the leading edge.
  • the contracted flow is less likely to occur on the rear edge 7d side of the outer peripheral end 7b and can be efficiently recovered as a static pressure.
  • the slight leakage flow from the pressure surface side to the negative pressure side in the gap T can be smoothly decelerated along the expanding discharge side opening 9y on the discharge side of the orifice 9, so that the flow loss increases. There is nothing.
  • one surface of the extension 12 is formed with the same curvature as the arc recess of the fixed blade 7, so that the flow on the rear edge 7 d side of the fixed blade 7 can be disturbed as much as possible.
  • the static pressure can be recovered efficiently.
  • the loss of flow caused by supporting the stationary blade 8 on the casing that holds the orifice 9 can be reduced, so that the efficiency of static pressure recovery in the stationary blade 8 can be reduced as much as possible. Can be suppressed.
  • the thickness of the extension 12 is the same as the thickness of the fixed blade 7 on the extension trailing edge 12a side and becomes thicker toward the front edge, so that the direction of the air flow is on the extension leading edge 12b side of the extension 12. It becomes possible to match the direction of the flow that fluctuates greatly, and it is possible to suppress the flow loss due to the separation that occurs on the downstream side of the extension portion 12 and to secure the strength necessary to hold the fixed blade 7.
  • the fixed blade 7 is supported at a radial position on the outer peripheral side of the discharge side opening 9 y of the orifice 9, the fixed blade 7 is outside the airflow flowing along the leg 13 along the discharge side opening 9 y of the orifice 9. The resistance on the discharge side of the orifice 9 can be reduced.
  • the fixed blade 7 is supported so that the rear end of the fixed blade 7 protrudes to the blow-out side from the support frame 11, the airflow flowing through the leg portion 13 along the discharge side opening 9 y of the orifice 9 is supported.
  • the resistance on the discharge side of the orifice 9 can be reduced.
  • FIG. 6 is a cross-sectional view of an outdoor unit equipped with the blower of the present embodiment.
  • the outdoor unit includes a compressor 22, an outdoor heat exchanger 23, and the like in a casing 21 that forms an outer shell.
  • the motor 10 is fixed to the housing 21 via a motor fixing tool 24 on a pillar fixed to the bottom of the housing 21, so that the blower 1 has the discharge side opening 9 y of the orifice 9 in the housing 21. It is being fixed to the housing
  • a blowing grill 25 is provided on the front portion 21a of the casing 21 so as to cover the stationary blade 8 protruding from the front portion 21a to the front surface (discharge side).
  • the blow-out grill 25 is supported at a position on the outer peripheral side further than the support frame 11. Further, the blowout grill 25 may be held by the housing 21 or the support frame 11.
  • Such an outdoor unit constitutes a refrigeration cycle by being connected to an indoor unit of an air conditioner equipped with an indoor heat exchanger or a unit of a heat pump water heater. Then, the air around the outdoor unit is blown to the outdoor heat exchanger 23 by the blower 1, so that heat exchange is performed with the refrigerant flowing in the heat transfer pipe of the outdoor heat exchanger 23 by the operation of the compressor 22.
  • the stationary blade 7 and the blowout grill 25 of the stationary blade 8 are not directly fixed, but are fixed to the casing 21. Even if an external force is applied to the blowing grill 25 due to a certain pressure, the external force is absorbed to some extent by the deformation of the front portion 21a of the casing 21, so that the stationary blade 8 is deformed or the stationary blade 8 is fixed. The positional relationship between the blade 7 and the orifice 9 does not shift. For this reason, it is not necessary to increase the strength of the blowing grill 25, and the outdoor unit can be configured at low cost.
  • the stationary blade 7 and the blowing grill 25 of the stationary blade 8 can be configured separately, the molding accuracy when the stationary blade 7 is molded can be improved, and the static pressure can be efficiently recovered at a low cost.
  • a possible stationary blade 8 can be manufactured.
  • the fixed blade 7 and the blowing grill 25 are integrally formed, it is necessary to provide a fin for eliminating the undercut at a position where the fixed blade 7 and the blowing grill 25 intersect.
  • undercut refers to a shape that cannot be released only in the direction of opening the mold when the molded product is taken out (released) from the mold in the molding process. If it is not provided, it cannot be manufactured with a mold that opens only in the vertical direction, and it is necessary to provide a slide core (side core) that slides in the horizontal direction, which increases the cost of the mold and increases the manufacturing cost.
  • the outdoor unit on which the blower of the present embodiment is mounted may not be a front blowing type outdoor unit as shown in FIG. 6, but may be a top blowing type outdoor unit.
  • FIG. 7 is a longitudinal sectional view of an outdoor unit of a top blowing type equipped with a blower according to the present embodiment.
  • the outdoor unit in FIG. 7 is different from the outdoor unit described in FIG. 6 in that the direction of blowing air from the blower 1 is only the direction of blowing out from the upper surface portion 21b of the casing 21. Since it becomes the structure and effect
  • the stationary blade 7 of the stationary blade 8 is fixed to the orifice 9 or the housing via the support frame 11. Therefore, even when the blowing grill 25 or the stationary blade 8 is pushed in the direction of the moving blade 5, a predetermined gap between the blowing grill 25 or the stationary blade 8 and the moving blade 5 can be maintained. It is possible to prevent the stationary blade 7 of the stationary blade 8 from coming into contact with the moving blade 5 to deform or break the moving blade 5 or the stationary blade 8.
  • FIG. 8 is a meridional sectional view of another blower according to the second embodiment of the present invention.
  • FIG. 9 is a front view as seen from the discharge side of another blower according to the second embodiment of the present invention.
  • the same components as those in the first embodiment of the present invention are denoted by the same reference numerals, and description thereof is omitted.
  • the extension part front edge 12 b side of the extension part 12 is substantially parallel to the front part 21 a shown in FIG. 6, while the extension part rear edge 12 a side is the side of the fixed blade 17. As it goes to the outer peripheral side, it is inclined so as to approach the front portion 21a side. For this reason, the meridional section height of the extension portion 12 is formed so as to become shorter toward the outer peripheral side of the fixed blade 17.
  • the meridional section of the extension 12 is used. By lowering the height toward the outer peripheral side, the turbulence of the flow in the extension portion 12 can be kept small, and the flow resistance can be reduced.
  • the extension portion 12 is provided only on some of the fixed blades 17.
  • the total number of fixed blades 17 is 13, while the number of fixed blades 17x provided with the extension 12 is five.
  • two fixed blades 17y not provided with the extension 12 are arranged next to the fixed blade 17x provided with the extension 12, and in the lower part of the fixed blade 17x provided with the extension 12.
  • one fixed blade 17y not provided with the extension 12 is disposed. That is, the number of the fixed blades 17y provided between the two fixed blades 17x provided with the extension portion 12 and not provided with the extension portion 12 is smaller in the lower portion than the upper portion of the housing 21 shown in FIG. Is.
  • At least a part of the plurality of fixed blades 17 includes an extension portion 12 and a leg portion 13 extending from the outer peripheral end of the extension portion 12 in the direction of the orifice 9. Is held by the orifice 9 or the casing. Therefore, even when the stationary blade 8 is pushed and displaced in the direction of the moving blade 5, the extension portion 12 and the leg portion 13 absorb the displacement, and the moving blade 5 and the stationary blade 8 are deformed or damaged. Can be prevented.
  • extension part 12 is provided only in some fixed blades 17 instead of all the fixed blades 17, the loss of the flow by providing the extension part 12 is not the whole fixed blades 17, Since it remains in a part, the efficiency improvement in the stationary blade 18 having the fixed hub 16 and the fixed blade 17 is not hindered.
  • the blower according to the present embodiment has a fixed blade as a moving blade when the stationary blade is strongly pressed toward the moving blade side, while achieving both improved aerodynamic performance and higher efficiency. It is possible to prevent the moving blades and the stationary blades from being deformed or damaged.
  • the outdoor unit equipped with the blower of this embodiment achieves power saving and low noise, while the stationary blade comes into contact with the moving blade when the blowing grill is pushed strongly toward the moving blade side. It is possible to prevent the moving blade and the stationary blade from being deformed or damaged.
  • the front edge 7 c of the fixed blade 7 is configured to be upstream of the rear edge 7 d of the fixed blade 7. For this reason, when the blower 1 is viewed from the discharge side, the front edge 7c of the fixed blade 7 is located above the rear edge 7d in the region on the right side of the fixed hub 6, and the region on the left side of the fixed hub 6 Then, the front edge 7c of the fixed blade 7 is positioned below the rear edge 7d. That is, in the region on the right side of the fixed hub 6, the fixed blade 7 is inclined downward from the windward side toward the leeward side, and in the region on the left side of the fixed hub 6, the fixed blade 7 is inclined upward from the windward side to the leeward side. It becomes.
  • the outer peripheral end 7 b of the fixed blade 7 front edge 7 c or rear edge 7 d is positioned below the fixed hub side end 7 a of the same fixed blade 7. It becomes.
  • the outer peripheral end 7b of the fixed blade 7 is provided so as to be positioned (offset) in the counter-rotating direction of the moving blade 5 from the fixed hub side end 7a. Therefore, the region where the outer peripheral end 7b of the front edge 7c or the rear edge 7d of the fixed blade 7 is located below the fixed hub side end 7a of the same fixed blade 7 is offset from the outer peripheral end 7b to the height of the rotary shaft 2. It is below the height of the added distance.
  • the eleven fixed blades 7 are all configured in the same shape. However, in the region on the left side of the fixed hub 6 as viewed from the direction in which the rotating direction of the rotor blade 5 is clockwise, the interval (pitch) between the fixed blades 7 is larger than the region on the right side of the fixed hub 6.
  • the fixed blades 7 are connected to each other. 11 is provided with eleven fixed blades 7 so that the interval (pitch) is large, and the other intervals are equal (equal pitch).
  • the pitch of the fixed blades 7 close to the region X1 is three times the pitch of the fixed blades 7 in other regions. That is, if the fixed blades 7 are disposed in the region X1 at the same pitch as the fixed blades 7 provided in the region other than the region X1, two fixed blades 7 are disposed in the region X1.
  • the front edge 7c which is the edge on the suction side of the fixed blade 7, is linearly formed from the fixed hub side end 7a which is the end on the fixed hub 6 side to the outer peripheral end 7b which is the end on the outer peripheral side.
  • the rear edge 7d which is the edge on the discharge side of the fixed blade 7, is configured in a curved shape from the fixed hub side end 7a to the outer peripheral end 7b.
  • the rear edge 7d has a curved shape that is recessed in the central portion 7m in the direction of the front edge 7c.
  • the stationary blade 8 shown in FIG. 1 having the fixed hub 6 and the fixed blade 7 has a front edge 7c below the rear edge 7d among the plurality of fixed blades 7, and at least a part of the outer peripheral end 7b is a fixed hub side end.
  • the fixed blade 7 to be located in a region below the region 7a (region X2 surrounded by a broken line in FIG. 2) is provided with an outer peripheral end 7b of the fixed blade 7 below the central portion 7m of the same fixed blade 7. ing.
  • the front edge 7c is located below the rear edge 7d, and at least a part of the outer peripheral end 7b is located in a region (region X2 in FIG. 2) located below the fixed hub side end 7a.
  • the fixed blade 7 to be provided does not include a portion (horizontal portion) that is horizontal to the ground at the front edge 7c or the rear edge 7d.
  • the stationary blade 8 is disposed in the region X1 at the same pitch as the stationary blade 7 provided in a region other than the region X1, the stationary blade 8 is at least of the central portion 7m of the stationary blade 7.
  • a part of the fixed blade 7 is configured to be in a state excluding the fixed blade 7 which is positioned below the outer peripheral end 7b.
  • wing 7 and the support frame 11 changes with positions where the fixed blade
  • the extension 12 of the fixed blade 7 located on the top, bottom, left and right in the direction of gravity is short, and the extension of the other fixed blade 7 is long. According to this, it becomes easy to ensure sufficient strength to hold the stationary blade 8 on the support frame 11.
  • the blower and the stationary blade 8 in the present embodiment are configured so that the fixed blade 7 has a fixed blade 7 in a region where the front edge 7c of the fixed blade 7 is positioned below the rear edge 7d (region on the left side of the fixed hub 6 in FIG. 10).
  • the pitch is larger than the pitch of the fixed blade 7 in the region where the front edge 7c of the fixed blade 7 is located above the rear edge 7d (the region on the right side of the fixed hub 6 in FIG. 10).
  • the fixed blade 7 in which the front edge 7 c is below the rear edge 7 d and at least a part of the outer peripheral end 7 b is below the fixed hub side end 7 a is the outer peripheral end of the fixed blade 7.
  • 7 b is provided below the central portion 7 m of the same fixed blade 7.
  • at least a part of the central portion 7 m is not provided with a fixed blade that is positioned below the outer peripheral end 7 b of the same fixed blade 7.
  • the fixed blade 7 having the front edge 7c below the rear edge 7d and at least a part of the outer peripheral end 7b below the fixed hub side end 7a has a horizontal portion at the front edge 7c or the rear edge 7d. There is no. Thereby, it is possible to prevent the snow accumulated on the upper portion of the blower 1 and its peripheral members from being melted and collecting on the horizontal portion of the fixed blade 7 to generate or grow an ice column.
  • FIG. 11 shows a blower in which fixed blades 7 having the same diameter as the fixed blades 7 arranged in other regions are also arranged in the region X1 for comparison with the present embodiment.
  • the stationary blade 7 on the right side of the stationary hub 6 among the stationary blades 7 of the stationary blade is from the windward side to the leeward side. Even if a water droplet falls from above, it does not flow in the direction of the moving blade 5. However, what is on the left side is inclined upward from the leeward side toward the leeward side, so that water droplets falling from above may flow down in the direction of the moving blade 5.
  • the stationary blades 7 When the water droplets falling from above are melted snow or the like, the stationary blades 7 not only flow down toward the windward side, that is, in the direction of the moving blades 5 but grow as icicles and interfere with the moving blades 5. As a result, abnormal noise may be generated, or the moving blade 5 may be stopped or damaged.
  • the one that flows in the direction of the moving blade 5 is a water droplet that is less likely to flow in the left-right direction of the fixed blade 7 (the direction of the outer peripheral end 7 b or the fixed hub side end 7 a).
  • Such water droplets are conspicuously generated at a portion where the front edge 7c of the fixed blade 7 is horizontal (front edge horizontal portion 7e) or a portion where the rear edge 7d is horizontal (rear edge horizontal portion 7f).
  • Such a horizontal portion is likely to occur when the entire front edge 7c or rear edge 7d of the fixed blade 7 is horizontal or curved when viewed from the discharge side.
  • the leading edge 7c or the trailing edge 7d of the fixed blade 7 is curved when viewed from the discharge side, as described above, the blade mounting angle ⁇ of the fixed blade 7 varies depending on the radial position of the fixed blade 7. This is likely to occur when configured as described above.
  • the fixed blade 7 has a large pitch in a region where the front edge 7c of the fixed blade 7 is located below the rear edge 7d. As compared with the above, it is possible to reduce the fixed blade 7 provided in a state in which water easily flows in the direction of the moving blade 5 to have a horizontal portion.
  • the fixed blade 7 has a front edge 7c formed in a curved shape, a front edge 7c below the rear edge 7d, and at least a part of the outer peripheral end 7b below the fixed hub side end 7a. Since the outer peripheral end 7b of the fixed blade is provided below the central portion 7m (the fixed blade disposed in the region X2 in FIG. 10), it is possible to eliminate a horizontal portion where water droplets easily collect.
  • the stationary blade 8 configured as the fixed blade 7, an icicle grows in the direction of the moving blade 5, and does not interfere with the moving blade 5 to generate abnormal noise, and the moving blade 5 does not stop or break. . Further, the effect of collecting the static pressure of the stationary blade 8 can be maximized by minimizing the decrease in the number of fixed blades included in the stationary blade 8.
  • the two fixed blades 7 are removed from the stationary blade having the configuration shown in FIG. 11, and the pitch of the fixed blades 7 in the region on the left side of the fixed hub 6 is made unequal, thereby increasing the pitch. is doing.
  • the present invention is not limited to this, and if the pitch of the region on the left side of the fixed hub 6 is larger than that of the region on the right side of the fixed hub 6, the region on the left side of the fixed hub 6 can also be set to an equal pitch.
  • region on the left side from the fixed hub 6 is also made into equal pitch, it is desirable to design so that the stationary blade 8 whole may be rotated a little, and it may become the arrangement
  • the front edge 7c of the fixed blade 7 is linear and the rear edge 7d is curved.
  • the front edge 7c is curved.
  • the trailing edge 7d may be linear.
  • the outdoor unit in which the air blower in this Embodiment is mounted can prevent the fixed blade
  • the stationary blade 7 of the stationary blade 8 and the blowing grill 25 are not directly fixed, but are fixed to the casing 21, so that they are dropped. Even if an external force is applied to the blowing grill 25 due to the artificial pressure from the front, the external force is absorbed to some extent by the deformation of the front portion 21a of the casing 21, so that the stationary blade 8 is deformed, The positional relationship between the stationary blade 7 of the stationary blade 8 and the orifice 9 does not shift. For this reason, it is not necessary to increase the strength of the blowing grill 25, and the outdoor unit can be configured at low cost.
  • the stationary blade 7 and the blowing grill 25 of the stationary blade 8 can be configured separately, the molding accuracy when the stationary blade 7 is molded can be improved, and the static pressure can be efficiently recovered at a low cost.
  • a possible stationary blade 8 can be manufactured.
  • the fixed blade 7 and the blowing grill 25 are integrally formed, it is necessary to provide a fin for eliminating the undercut at a position where the fixed blade 7 and the blowing grill 25 intersect.
  • undercut refers to a shape that cannot be released only in the direction of opening the mold when the molded product is taken out (released) from the mold in the molding process. If it is not provided, it cannot be manufactured with a mold that opens only in the vertical direction, and it is necessary to provide a slide core (side core) that slides in the horizontal direction, which increases the cost of the mold and increases the manufacturing cost.
  • FIG. 12 is a front view seen from the discharge side of the blower in the fourth embodiment of the present invention. Note that in this embodiment, the same components as those in the other embodiments are denoted by the same reference numerals and description thereof is omitted.
  • a stationary blade 8 having a fixed hub 6 and twelve fixed blades 7 provided around the fixed hub 6 is provided on the discharge side (downstream side) of the moving blade 5.
  • the pitch of the stationary blades 7 is other than the rotation axis 2 (hereinafter referred to as FIG. 1) on the left side of the rotation shaft 2 (refer to FIG. 1) and the center in the vertical direction. It is comprised so that it may become twice the pitch of the fixed blade
  • one fixed plate is provided in a region corresponding to the center in the vertical direction on the left side of the rotary shaft 2 when viewed from the direction in which the rotating direction of the moving blade 5 is clockwise.
  • wing 7 will be arrange
  • the shape of the fixed blade 27 provided in the region on the left side of the fixed hub 6 when viewed from the direction in which the rotation direction of the moving blade 5 is clockwise is the same as that of the fixed blade 7 provided in the region on the right side of the fixed hub 6. It is different from the shape.
  • the fixed blades 27 having different shapes are arranged such that if the fixed blades 7 having the same shape are arranged at an equal pitch, at least a part of the central portion 7m of the fixed blade is positioned below the outer peripheral end 7b of the fixed blade. It is. And the fixed blade
  • wing 27 is a shape which does not provide a horizontal part from the center part 27m of a fixed blade
  • the shape between the central portion 27m of the fixed blade 27 and the fixed hub side end 27a is the same shape as the other fixed blades 7, and the shape between the central portion 27m and the outer peripheral end 27b is different.
  • the rear edge 27d of the fixed blade 27 is configured in a curved shape between the central portion 27m of the fixed blade 27 and the fixed hub side end 27a, but is linear between the central portion 27m and the outer peripheral end 27b. Is formed.
  • the meridian height h2 of the fixed blade 27 is the same as the meridian surface height h2 of the other 11 fixed blades 7 (refer to FIG. 1 hereinafter), and is constant from the fixed hub side end 27a to the outer peripheral end 27b. It is.
  • the blade mounting angle ⁇ of the fixed blade 27 (refer to FIGS. 3A and 3B below) is the same as the blade mounting angle ⁇ of the other 11 fixed blades 7, and the blade on the outer peripheral end 27b side from the central portion 27m.
  • the mounting angle ⁇ b is made larger than the blade mounting angle ⁇ a on the fixed hub side end 27a side from the central portion 27m.
  • the front edge 27c of the fixed blade 27 is linearly formed between the central portion 27m of the fixed blade 27 and the fixed hub side end 27a, like the other 11 fixed blades 7. Between the central portion 27m and the outer peripheral end 27b, a curved shape is formed.
  • the stationary blade 18 is as follows. That is, in the fixed blade 7 in which at least a part of the central portion 7m of the fixed blade 7 is located below the outer peripheral end 7b of the same fixed blade 7, there are many places where the front edge 7c or the rear edge 7d is horizontal.
  • the configuration is such that one of the stationary blades is removed, and a part of the shape of the stationary blade of one of the fewer horizontal portions is corrected.
  • FIG. 10 shows a part of the shape of the stationary blade of one of the fewer horizontal portions is corrected.
  • the shape of at least one of the fixed blades 7 in a region where the front edge 7c of the fixed blade 7 is located below the rear edge 7d is different. Compared to the stationary blades of FIG. 5, it is possible to reduce the fixed blade 7 provided in a state where water easily flows in the direction of the moving blade 5 from having a horizontal portion.
  • one stationary blade 27 other than the two stationary blades 7 on the left side of the stationary hub 6 and having the front edge horizontal portion 7e or the rear edge horizontal portion 7f is removed from the stationary blade having the configuration shown in FIG.
  • the horizontal part of the trailing edge 27d was changed to a part where the slope changes on the left and right sides, so that there was no horizontal part and the part was inclined to one side.
  • the water droplets flow in the left-right direction (in the direction of the outer peripheral end 27b or the fixed hub side end 27a) without stagnation, so that an ice column toward the moving blade 5 grows and interferes with the moving blade 5 to generate abnormal noise.
  • the rotor blade 5 does not stop or break.
  • the effect of collecting the static pressure of the stationary blade 18 can be maximized by minimizing the number of fixed blades having different shapes.
  • the shape modification from the fixed blade 7 to the fixed blade 27 has modified the curved shape formed by the trailing edge 7d of the fixed blade 7, but the meridian surface height h2 in FIG. 1 and the blade mounting angle in FIGS. 3A to 3C. ⁇ is not changed.
  • the shape of the front edge 27c of the fixed blade 27 is also different from that of the fixed blade 7, but there is almost no deterioration in the performance of recovering the static pressure due to this correction. This is because the performance of the stationary blade 8 to collect the static pressure is greatly affected by the meridian surface height h2 and the blade mounting angle ⁇ .
  • one fixed blade 7 is removed from the stationary blade having the configuration shown in FIG. This is because the entire fixed blade 7 of the former fixed blade 7 is almost horizontal, and the risk of icicles can be avoided more reliably than by correcting the shape. Therefore, depending on the posture of the fixed blade 7, the shape of all the fixed blades that may grow ice pillars may be corrected without removing the former fixed blade 7.
  • the front edge 7c of the fixed blade 7 is linear and the rear edge 7d is curved.
  • the trailing edge 7d may be linear.
  • the fixed blade 27 whose shape is changed is linear between the central portion 27m of the front edge 27c and the fixed hub side end 27a, and is curved between the central portion 27m and the outer peripheral end 27b.
  • a curved shape may be formed between the central portion 27m of the rear edge 27d and the fixed hub side end 27a, and a linear shape may be formed between the central portion 27m and the outer peripheral end 27b.
  • the blower according to the present embodiment can prevent the fixed blade 7 arranged in a shape such that water flows in the direction of the moving blade 5 from having a horizontal portion. For this reason, it can prevent that the snow etc. which accumulated on the upper part of the air blower 1 and its peripheral member melt
  • the outdoor unit equipped with the blower of the present embodiment can prevent the fixed blade 7 having a shape such that water flows down in the direction of the moving blade 5 from having a horizontal portion. For this reason, it is possible to prevent the snow accumulated in the upper part of the outdoor unit from being melted and accumulating on the fixed blade 7, generating icicles, and growing.
  • the present invention provides a moving blade having a rotating hub having a rotating shaft and a plurality of rotating blades provided around the rotating hub, an orifice provided on the outer peripheral side of the moving blade, and a moving blade.
  • a stationary blade having a fixed hub and a plurality of fixed blades provided around the fixed hub.
  • the fixed blade has a blade attachment angle with respect to a surface perpendicular to the rotation axis on the outer peripheral side from the central portion in the radial direction of the fixed blade, and a blade attachment angle on the fixed hub side from the central portion in the radial direction of the fixed blade. I tried to get bigger.
  • the blade mounting angle of the fixed blade is maximized between the central portion in the radial direction of the fixed blade and the outer peripheral end.
  • the blade mounting angle at the outer peripheral end of the fixed blade is slightly smaller than the blade mounting angle from the center to the outer peripheral side, so the collision loss at the inlet of the fixed blade is kept small at the outer peripheral end of the fixed blade. be able to. For this reason, the swirl direction component can be efficiently recovered to the static pressure from the center portion of the fixed blade to the outer peripheral side and further to the outer peripheral end.
  • the blade mounting angle at the outer peripheral end of the fixed blade is made smaller than the blade mounting angle at the central portion in the radial direction of the fixed blade.
  • the meridional surface height which is the height projected by the fixed blade from the fixed hub side to the outer peripheral end on the plane including the rotation axis, is constant.
  • chord length can be suppressed without extending from the fixed hub side to the outer peripheral side of the fixed blade, so that it is possible to suppress an increase in the surface friction loss of the fixed blade and an increase in loss due to an increase in the wake width of the wake.
  • chord length can be kept near the outer peripheral edge of the fixed blade without increasing the length, the rotor blade and orifice, which are easily affected when the chord length at the outer peripheral edge is long (when the meridian height is high), The influence of the leakage flow between the blades and the tip vortex generated at the tip of the rotor blade can be minimized. For this reason, it is possible to recover the swirl direction component of the air flow at the outer peripheral end of the fixed blade to a static pressure while suppressing an increase in loss due to turbulence.
  • the stationary blade is inclined in the counter-rotating direction of the moving blade with respect to the stationary hub side on the plane perpendicular to the rotation axis.
  • the present invention also provides a moving blade having a rotating hub having a rotating shaft and a plurality of rotating blades provided around the rotating hub, an orifice provided on the outer peripheral side of the moving blade, and a discharge side of the moving blade.
  • a stationary blade having a fixed hub and a plurality of fixed blades provided around the fixed hub.
  • the orifice includes a minimum diameter portion where the gap with the outer peripheral end of the rotary blade is minimum, and a discharge side opening provided on the discharge side of the minimum diameter portion and having a diameter larger than the minimum diameter portion.
  • the fixed blade is provided so that the axial position of the outer peripheral end of the front edge, which is the edge on the suction side of the fixed blade, is located between the smallest diameter portion of the orifice and the discharge side opening.
  • a predetermined gap is provided between the outer peripheral end of the leading edge and the orifice.
  • the present invention at least a part of the plurality of fixed blades provided on the stationary blade, is provided with an extended portion that extends in the radial direction only the rear edge side of the outer peripheral end, the stationary blade via the extended portion, It is held in a casing that holds the orifice.
  • the stationary blade can be held in the casing that holds the orifice without hindering the improvement in efficiency due to the static pressure recovery in the stationary blade.
  • the loss of the flow in an extension part can be made still smaller by providing an extension part in a part instead of all of a plurality of fixed blades.
  • the stationary blade is inclined in the counter-rotating direction of the moving blade with respect to the stationary hub side on the plane perpendicular to the rotation axis.
  • the present invention also provides a moving blade having a rotating hub having a rotating shaft and a plurality of rotating blades provided around the rotating hub, provided on the discharge side of the moving blade, and provided around the fixed hub and the fixed hub.
  • a stationary blade having a plurality of fixed blades.
  • the stationary blade has a trailing edge in which the fixed blade provided in the region where the leading edge of the fixed blade is located below the trailing edge is the leading edge, which is the suction side edge of the fixed blade, and the blowing side edge. It is larger than the interval between the fixed blades provided in the region located above.
  • This configuration can reduce the number of spots where water droplets tend to collect from the fixed blades in the region where water flows in the direction of the moving blades.
  • snow and frost accumulated on the upper part of the blower and its peripheral members are melted by solar radiation and transmitted to the fixed blades, and the snow melted water re-freezes and the ice pillars grow and accumulate on the fixed blades. It is possible to prevent the ice column from growing toward the windward side of the fixed blade from the water droplets. For this reason, it is possible to prevent the icicle from interfering with the moving blades to generate abnormal noise or to stop the moving blades.
  • the present invention also provides a moving blade having a rotating hub having a rotating shaft and a plurality of rotating blades provided around the rotating hub, provided on the discharge side of the moving blade, and provided around the fixed hub and the fixed hub.
  • a stationary blade having a plurality of fixed blades.
  • the shape of at least one fixed blade provided in a region where the front edge of the fixed blade is located below the rear edge is the shape of the fixed blade provided in a region where the front edge of the fixed blade is located above the rear edge.
  • a horizontal portion is not provided from the center portion to the outer peripheral end of the fixed blade.
  • This configuration can reduce the horizontal part where water droplets tend to collect from the fixed blades in the region where water flows in the direction of the moving blades.
  • snow and frost accumulated on the upper part of the blower and its peripheral members are melted by solar radiation and transmitted to the fixed blades, and the snow melted water re-freezes and the ice pillars grow and accumulate on the fixed blades. It is possible to prevent the ice column from growing toward the windward side of the fixed blade from the water droplets. For this reason, it is possible to prevent the icicle from interfering with the moving blades to generate abnormal noise or to stop or break the moving blades.
  • At least one of the front edge or the rear edge of the plurality of fixed blades is formed in a curved shape, and among the plurality of fixed blades, the front edge is below the rear edge, and at least one of the outer peripheral ends.
  • An outer peripheral end of the fixed blade of which the portion is below the fixed hub side end is provided below the central portion of the fixed blade.
  • This configuration eliminates the horizontal part where water droplets tend to collect on the fixed blade.
  • the present invention comprises, among the plurality of fixed blades, a fixed blade whose front edge is below the rear edge in the same shape as the fixed blade whose front edge is above the rear edge, and At least a part of the fixed blades that are positioned below the outer peripheral edge of the fixed blade is not provided.
  • the fixed blade not provided with the horizontal portion is configured with the same shape as the fixed blade whose front edge is above the rear edge, among the plurality of fixed blades, whose front edge is below the rear edge.
  • at least a part of the central portion of the fixed blade is a fixed blade that is positioned below the outer peripheral end of the fixed blade.
  • This configuration makes it possible to prevent water droplets from accumulating on the fixed blades while minimizing the number of fixed blades having different shapes and maintaining the effect of the stationary blades to the maximum.
  • the mounting angle of the fixed blade without the horizontal portion is the same as the mounting angle of the other fixed blades.
  • the present invention also provides a moving blade having a rotating hub having a rotating shaft and a plurality of rotating blades provided around the rotating hub, an orifice provided on the outer peripheral side of the moving blade, and a discharge side of the moving blade. And a stationary blade having a fixed hub and a plurality of fixed blades provided around the fixed hub. Further, the stationary blade is provided with an annular support frame around the rotation axis on the outer periphery thereof, and the support frame and the orifice are fixed.
  • This configuration can prevent the stationary blade from coming into contact with the moving blade when the stationary blade is strongly pressed toward the moving blade, and the deformation or damage of the moving blade or the stationary blade.
  • At least a part of the plurality of fixed blades provided on the stationary blade includes an extension portion extending only in the radial direction only at the rear edge side of the outer peripheral end, and the direction from the outer peripheral end of the extension portion toward the orifice.
  • the stationary blade is held by the orifice through the extension portion and the leg portion.
  • the fixed blade and the support frame are integrally formed.
  • This configuration increases the strength of the fixed blade and the support frame, and prevents the fixed blade from coming into contact with the moving blade and deforming or damaging the moving blade or the stationary blade.
  • the present invention is an outdoor unit equipped with the blower of the present invention mentioned above.
  • the outdoor unit can prevent the stationary blades and the blowing grille from coming into contact with the moving blades and deforming or damaging the moving blades and the stationary blades.
  • blower having the configuration according to the present invention can achieve both improvement in aerodynamic performance and high efficiency, air conditioning equipment for home and commercial use air conditioners, home refrigerator refrigerators and vending machines. It can be applied not only to refrigeration equipment such as refrigeration equipment, heat pump equipment such as water heaters, and electronic equipment having thermoelectric components, but also to AV equipment and waste heat recovery equipment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention comprend les éléments suivants : un aubage de rotor (5) ayant un moyeu rotatif (3) qui a un axe rotatif (2), et une pluralité d'aubes rotatives (4) situées autour du moyeu rotatif (3) ; et un aubage de stator (8) situé du côté refoulement de l'aubage de rotor (5) et ayant un moyeu fixe (6) et une pluralité d'aubes fixes (7) situées autour du moyeu fixe (6). En outre, pour correspondre à l'écoulement de sortie d'air de l'aubage de rotor (5) où un écoulement principal d'air se concentre dans la zone hors du centre des aubes rotatives (4), les aubes fixes (7) ont un angle de fixation plus grand à l'extérieur d'une partie centrale dans la direction radiale des aubes fixes (7), par rapport à l'angle de fixation des aubes fixes (7) vers le moyeu fixe (6) par rapport à la partie centrale des aubes fixes (7).
PCT/JP2014/006016 2013-12-04 2014-12-02 Ventilateur et unité d'extérieur équipée de celui-ci WO2015083371A1 (fr)

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CN201480066248.6A CN105793578B (zh) 2013-12-04 2014-12-02 风机和装载有该风机的室外单元

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JP2013-250815 2013-12-04
JP2013-250816 2013-12-04
JP2013250816A JP6229157B2 (ja) 2013-12-04 2013-12-04 送風機、およびその送風機を搭載した室外ユニット
JP2013250815A JP6225332B2 (ja) 2013-12-04 2013-12-04 送風機、およびその送風機を搭載した室外ユニット
JP2014026142A JP6295414B2 (ja) 2014-02-14 2014-02-14 送風機、およびその送風機を搭載した室外ユニット
JP2014-026142 2014-02-14
JP2014059567A JP6295420B2 (ja) 2014-03-24 2014-03-24 送風機、およびその送風機を搭載した室外ユニット
JP2014-059567 2014-03-24

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EP3299737A4 (fr) * 2015-07-10 2018-12-05 Samsung Electronics Co., Ltd. Soufflante d'air et conditionneur d'air comportant celle-ci
EP3450861A4 (fr) * 2016-04-27 2019-05-08 Daikin Industries, Ltd. Unité extérieure pour dispositif de congélation
EP3683074A4 (fr) * 2017-09-11 2021-06-09 LG Electronics Inc. Purificateur d'air portable
WO2023281994A1 (fr) 2021-07-05 2023-01-12 ダイキン工業株式会社 Dispositif de soufflage d'air et système de conditionnement d'air comprenant celui-ci

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KR102016227B1 (ko) * 2017-11-28 2019-08-29 엘지전자 주식회사 팬 조립체 및 이를 포함하는 냉장고
CN110360631A (zh) * 2019-07-19 2019-10-22 中山市欧博尔电器有限公司 一种便携移动式油烟机
CN110762613B (zh) * 2019-11-29 2023-11-17 广东美的制冷设备有限公司 空调器、控制方法和计算机可读存储介质

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US10612563B2 (en) 2015-07-10 2020-04-07 Samsung Electronics Co., Ltd. Blower and air conditioner having the same
EP3299737A4 (fr) * 2015-07-10 2018-12-05 Samsung Electronics Co., Ltd. Soufflante d'air et conditionneur d'air comportant celle-ci
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WO2023281994A1 (fr) 2021-07-05 2023-01-12 ダイキン工業株式会社 Dispositif de soufflage d'air et système de conditionnement d'air comprenant celui-ci

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CN105793578B (zh) 2018-10-16
CN110985445B (zh) 2021-03-30
CN105793578A (zh) 2016-07-20
CN108708877B (zh) 2020-06-23
CN108708877A (zh) 2018-10-26

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