WO2013181904A1 - 斜流风扇、斜流风机及具有其的空调室内机 - Google Patents
斜流风扇、斜流风机及具有其的空调室内机 Download PDFInfo
- Publication number
- WO2013181904A1 WO2013181904A1 PCT/CN2012/085406 CN2012085406W WO2013181904A1 WO 2013181904 A1 WO2013181904 A1 WO 2013181904A1 CN 2012085406 W CN2012085406 W CN 2012085406W WO 2013181904 A1 WO2013181904 A1 WO 2013181904A1
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- WIPO (PCT)
- Prior art keywords
- air
- flow fan
- diagonal flow
- blade
- hub
- Prior art date
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000003068 static effect Effects 0.000 description 7
- 238000007664 blowing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/06—Helico-centrifugal pumps
-
- 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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0022—Centrifugal or radial fans
Definitions
- Diagonal flow fan, diagonal flow fan and air conditioner indoor unit having the same
- the present invention relates to the field of refrigeration technology, and in particular to a diagonal flow fan, a diagonal flow fan, and an air conditioning indoor unit having the same. Background technique
- the air duct system of the existing air conditioner indoor unit mostly adopts a centrifugal fan, and the volute and the centrifugal fan are disposed in the lower part of the air conditioner inner cavity, and the heat exchanger is disposed at the upper part of the air conditioner inner cavity and is placed obliquely, and the air inlet and the air outlet respectively are respectively Located in the lower part and upper part of the casing, the air inlet is located in front of or directly in front of the casing, the air outlet is located directly in front of the casing, and the lower fan duct system is blown to the upper heat exchanger to achieve rapid heat exchange. purpose.
- Some fan duct systems use a cross-flow fan, which places the heat exchanger behind the cross-flow fan, and the air outlet is placed in the middle or on both sides of the air conditioner. The air at the rear of the body is introduced and blown through the heat exchanger by the high-speed rotation of the cross-flow fan.
- the present invention aims to solve at least one of the technical problems existing in the prior art.
- the present invention needs to provide a diagonal flow fan for an indoor unit of an air conditioner, which has a long air supply distance, a large air supply amount, and a high air supply efficiency.
- the present invention needs to provide an air conditioner indoor unit having the above-described diagonal flow fan, which has a simple and reasonable structure and a good air blowing effect.
- a diagonal flow fan for an indoor unit of an air conditioner comprising: a hub having a tapered or spherical wind guiding surface, the wind guiding surface being from a bottom end to a top end The outer dimension is gradually increased; a plurality of blades, the plurality of blades being disposed on the wind guiding surface, each of the blades comprising: a blade root portion, the blade root portion being connected to the wind guiding surface; The top of the leaf is away from the hub; the air inlet end is close to the bottom end of the air guiding surface; and the air outlet end is close to the top end of the air guiding surface, wherein the air inlet of the blade root
- the ratio of the diameter of the rotating circumference of the end to the diameter of the rotating circumference of the air inlet end of the blade tip is the ratio of the inlet end hub, the diameter of the rotating circumference of the blade root portion and the rotating circumference of the outlet end of the blade tip. The ratio of the diameters is the
- a diagonal flow fan for an air conditioner indoor unit is particularly suitable for a vertical air conditioning room
- the inner machine has a wind guiding surface of the hub of the diagonal flow fan, and the outer dimension of the air guiding surface from the bottom end to the top end gradually increases, and the ratio of the air inlet end hub is smaller than that of the air outlet end hub.
- the diagonal flow fan of the present invention has the characteristics of axial air inlet and oblique air outlet, and the air supply distance is increased, and the air supply efficiency is improved, and the air supply efficiency is improved.
- the inlet end hub ratio is 0.15 ⁇ 0.45.
- the ratio of the outlet end hub is 0.55 to 0.85.
- the angle formed by the rotation of the wire inlet end and the outlet end of the blade root around the axis of the diagonal flow fan is 35° from the axis of the diagonal flow fan. ⁇ 55. .
- the angle between the faces is 0° ⁇ 30°.
- the angle between the line connecting the inlet end and the outlet end of the blade and the direction of the wind end is the inclination angle of the blade, and the inclination angle is gradually reduced from the root to the top of the blade. small.
- the blade root has an inclination angle of 38° - 55°.
- the tip of the blade has an inclination angle of 18° - 35°.
- the blade root has an inclination angle of 44.2.
- the angle of inclination of the top of the leaf is 23°.
- an angle between a discharge direction of the airflow at the air outlet end and a rotation direction is an outlet installation angle of the blade, and the outlet installation angle gradually increases from the blade root to the blade tip.
- the blade root has an outlet mounting angle of 90° - 135°.
- the outlet angle of the top of the blade is from 105° to 150°.
- the outlet mounting angle of the blade portion is 104°, and the outlet mounting angle of the blade tip portion is 125.7°.
- the blades are 5-9.
- a floor-standing air conditioner including: a housing, the housing is provided with an air inlet and an air outlet, and the housing has an air inlet and the outlet respectively a tuyere connected to the tuyere; a heat exchanger, the heat exchanger is disposed in the casing; and a diagonal flow fan, the diagonal flow fan is disposed in the air duct, and the diagonal flow fan has a diagonal flow fan,
- the diagonal flow fan is a diagonal flow fan according to the above embodiment of the present invention.
- An air conditioner indoor unit which has a diagonal flow fan, which is particularly suitable for use with a vertical air conditioner indoor unit, since the hub of the diagonal flow fan has an air guiding surface, and the outer surface of the air guiding surface from the bottom end to the top end Gradually increasing, and the inlet end hub ratio is smaller than the outlet end hub ratio.
- the hub drives the blade to rotate, the air inlet end has a strong pulling force for capturing the airflow, and the air outlet end has a strong centrifugal force for discharging the trapped airflow.
- the invention is empty When the indoor unit is adjusted to ensure the air supply distance, the air supply volume is increased and the air supply efficiency is improved.
- the air conditioning indoor unit further includes a wind guiding member, the air guiding member is connected to the inner wall of the air duct, and the air guiding member has a wind guiding passage penetrating the air guiding member in a vertical direction.
- the diagonal flow fan is located in the air guiding channel.
- the air guiding member and the inner wall of the air duct have a gap, and the gap is filled with a noise absorbing layer.
- a wind wheel cover surrounding the blade is provided between the top surfaces of the blades.
- the lower end of the air guiding surface of the diagonal flow fan is provided with an inlet air guiding ring.
- the leeward side of the diagonal flow fan is provided with a diffuser cone coaxial with the hub, and the diffuser cone has a large diameter on the air inlet side and a small diameter on the air discharge side. structure.
- the diameter of the air guiding passage of the air guiding member corresponding to the diffuser cone gradually increases from bottom to top.
- the leeward side of the diagonal flow fan is provided with a fixed wind guide wheel
- the fixed wind guide wheel is provided with a fixed wind guide vane blocking the direction of air rotation
- the leeward side of the diagonal flow fan is provided with a diffuser cone and/or a fixed wind guide coaxial with the hub, and the diffuser cone has a large diameter on the air inlet side, and the air discharge side a truncated cone structure having a diameter 'j'; the fixed wind deflector is provided with a fixed wind guide vane blocking the direction of rotation of the air.
- Figure 1 shows a front view of a diagonal flow fan in accordance with one embodiment of the present invention
- FIG. 2 is a perspective view showing the structure of a diagonal flow fan according to an embodiment of the present invention.
- FIG. 3 shows a schematic view of a meridional plane of a diagonal flow fan according to an embodiment of the present invention
- FIG. 4 is a schematic cross-sectional view showing a blade of a diagonal flow fan according to an embodiment of the present invention
- FIG. 5 is a schematic plan view showing a wing-shaped plane of a blade having a thousand cross section from a blade root to a tip of the blade in the diagonal flow fan of the present invention
- FIG. 6 is a perspective structural view showing an indoor unit of an air conditioner according to an embodiment of the present invention.
- Figure 7 is a front elevational cross-sectional view showing the air conditioner indoor unit according to an embodiment of the present invention
- Figure 8 is a schematic enlarged view of the structure A in Figure 7;
- Figure 9 is a perspective view showing a perspective structure of a diagonal flow fan of an air conditioner indoor unit according to an embodiment of the present invention
- Figure 10 is a view showing a diagonal flow fan of an air conditioner indoor unit in a tangential direction of the impeller according to an embodiment of the present invention
- Figure 1 1 shows a diagonal flow fan of an air conditioner indoor unit being sent along the central axis direction according to an embodiment of the present invention.
- Fig. 12 is a front elevational, partial cross-sectional view showing the air conditioner indoor unit according to an embodiment of the present invention.
- Figure 13 is a schematic enlarged view of the structure C at Figure 12;
- Figure 14 is a cross-sectional view showing a diagonal flow fan of an air conditioner indoor unit according to an embodiment of the present invention
- Figure 15 is a perspective view, partly in section, of an air conditioner indoor unit according to an embodiment of the present invention.
- Figure 17 is a front view showing the structure of Figure 16;
- Figure 18 is a partial cross-sectional structural view showing a diagonal flow fan of an air conditioning indoor unit according to an embodiment of the present invention.
- Figure 19 is a front elevational cross-sectional view showing the air conditioner indoor unit according to an embodiment of the present invention
- Figure 20 is a schematic enlarged view showing the structure of E in Figure 19;
- 21 is a schematic structural view of an indoor unit of an air conditioner according to an embodiment of the present invention.
- Figure 22 is a partial cross-sectional structural view showing a diagonal flow fan of an air conditioning indoor unit according to an embodiment of the present invention
- Figure 23 is a perspective view showing a fixed wind guide of an air conditioner indoor unit according to an embodiment of the present invention.
- Figure 24 is a cross-sectional enlarged view of the D-D of Figure 21;
- Figure 25 is a block diagram showing the structure of an indoor unit of an air conditioner according to an embodiment of the present invention.
- Figure 26 is a view showing an assembly of a diagonal flow fan related assembly of an air conditioner indoor unit according to an embodiment of the present invention
- Figure 27 is a view showing an explosion development of a diagonal flow fan related assembly of an air conditioner indoor unit according to an embodiment of the present invention.
- a diagonal flow fan for an air conditioner indoor unit includes: a hub 100 and a plurality of blades 200.
- the hub 100 may have a tapered or spherical wind guiding surface 101.
- the outer surface of the air guiding surface 101 is gradually increased from the bottom end to the top end.
- the hub 100 is rotatable by a motor, and the blade 200 may be coupled to the hub 100.
- the arrangement may also be detachably coupled to the surface of the hub 100, and when the hub 100 rotates, the blade 200 is rotated.
- the hub 100 has a conical or hemispherical shape with a large diameter end at the upper end and a smaller diameter end at the lower end.
- the side of the blade 200 connected to the hub 100 is a blade root 210, the side away from the hub 100 is a blade top 220; and the end of the blade 200 near the bottom end of the hub 100 is the air inlet end 240, and the end near the top end of the hub 100 is the air outlet end.
- 230 that is, the lower end shown in FIG. 3 is the air inlet end 240, and the upper end is the air outlet end 230.
- the diameter of the rotating circumference of the blade root portion 210 is d2; the diameter of the rotating end of the tip end portion 220 of the tip portion 220 is D2, and d2/D2 is the ratio of the outlet end 230 to the hub.
- the inlet end 240 hub ratio is smaller than the outlet end 230 hub ratio.
- a diagonal flow fan 10 for an air conditioner indoor unit is particularly suitable for use with a vertical air conditioner indoor unit, since the hub 100 of the diagonal flow fan 10 has a wind guiding surface 101 and a wind guiding surface 101 The outer dimension from the bottom end to the top end gradually increases, and the air inlet end 240 has a hub ratio smaller than the air outlet end 230.
- the hub 100 drives the blade 200 to rotate, the air inlet end 240 has a strong trapping airflow.
- the lift, and the outlet end 230 has a strong centrifugal force that discharges the trapped airflow.
- the diagonal flow fan of the present invention has the characteristics of axial air inlet and oblique air outlet, and the air supply distance is increased, and the air supply rate is increased, and the air supply efficiency is improved.
- the hub ratio of the air inlet end 240 may be 0.15 - 0.45.
- the hub ratio of the outlet end 230 may be 0.55 - 0.85.
- the axial pulling force and the centrifugal force of the diagonal flow fan can be maximized to ensure sufficient centrifugal action.
- the axial pulling force is further increased.
- the conventional centrifugal fan although the centrifugal force generated by it can send the wind out a long distance, so that the air supply distance of the air conditioner is large, but because the air volume sucked in is small, the air needs to turn a large angle when the air is blown, resulting in air volume. The loss is large, so the amount of air sent out is small and the air supply efficiency is low.
- the diameter of the hub 100 where the air inlet end 240 of the blade 200 is located is smaller than the diameter of the hub 100 where the air outlet end 230 is located, and the air inlet end 240 has a smaller hub ratio than the air outlet. End 230 hub ratio.
- the hub 100 drives the blade 200 to rotate, it has strong centrifugal force, can send air far distance, and has a large air supply distance; at the same time, it can generate axial pulling force, force air movement, and inhale a large amount of air.
- the wind is sent obliquely along the conical slope of the hub 100, and the air loss is small, and the air supply efficiency is high. Therefore, the diagonal flow fan 10 of the present embodiment has the characteristics of axial air inlet and oblique air outlet.
- the fork increases the air supply amount and improves the air supply efficiency. Therefore, it has the advantages of large airflow of the axial flow fan and good compression resistance of the centrifugal fan.
- connection between the air inlet end 240 and the air outlet end 230 of the blade root portion 210 of the impeller 200 that is, the connection between the upper and lower ends of the connecting portion of the impeller 200 and the hub 100 in FIG. 3, and the hub 100
- the angle between the axes is 35° ⁇ 55°, which is ⁇ 1 in the figure. This angle actually distributes both the centrifugal and axial movements of the diagonal flow fan 10 in the air conditioner.
- the movement in the centrifugal direction is mainly converted into pressure potential energy to ensure the air supply distance of the air conditioner; and the movement in the axial direction is to ensure that the air volume is large enough to ensure the air supply efficiency.
- the angle range further balances the air supply amount and the air supply distance of the diagonal flow fan 10.
- the angle between the line connecting the air inlet end 240 and the air outlet end 230 of the blade root portion 210 and the line connecting the air inlet end 240 and the air outlet end 230 of the blade top portion 220 is 0° to 30°, that is, in the figure. ⁇ 2.
- the purpose of the design is to form a special shrinkage in the work area of the impeller 200, effectively accelerate the flow of the airflow in the work area of the impeller 200, thereby suppressing the generation of eddy currents, further improving the fan efficiency, and simultaneously reducing the eddy current in the cavity.
- the number of the impellers 200 of the present embodiment is 5 to 9 pieces, and the conical surfaces around the hub 100 may be equidistantly or unequally distributed. If the number of blades is too small, sufficient air volume and air supply distance cannot be guaranteed; if the number of blades 200 is too large, the effective flow area will be reduced due to the boundary effect of the wall, which will affect the efficiency.
- the 5 - 9 piece is an ideal number to ensure that the air supply efficiency fork does not generate too much noise.
- the single-phase AC asynchronous motor is generally used for the fixed speed motor of the indoor unit, and the stator of the motor is generally 4, 6, and 8 poles.
- the structure of the synchronous rotating speed is 1500 rpm, 1000 rpm, 750 rpm, respectively.
- the diameter of the diagonal flow fan 10 of this embodiment can be set to 250 to 400 mm, and the rated working speed of the fan can be set to 500 rpm to 1500 rpm.
- Fig. 4 is a schematic cross-sectional view of a blade of a blade in the diagonal flow fan of the present invention.
- the blade 200 of the present embodiment is not a flat surface but a space-bent shape.
- the inclination angle of the blade gradually decreases from the blade root portion 210 to the blade top portion 220, and the outlet mounting angle of the blade gradually increases from the blade root portion 210 to the tip portion 220.
- the direction in which the vane 200 rotates about the axis is that the air inlet end 240 is in front and the air outlet end 230 is behind, and the side of the vane 200 that is in contact with the front side of the air flow is the windward side 260.
- the airflow enters from the air inlet end 240, climbs obliquely along the windward side 260 to the air outlet end 230, and is discharged from the air outlet end 230 to the air conditioning chamber by centrifugal force.
- the angle between the line connecting the inlet end 240 and the outlet end 230 of the blade section of the blade 200 and the direction of the inlet end is the inclination angle of the blade, and the inclination angle is gradually reduced from the root to the top of the blade. small.
- the side of the hub 100 radially intercepts the section obtained by the blade 200, that is, the wing section of the blade 200.
- the wing profile is understood to mean that, assuming that the sides of the hub 100 are deployed in a plane, all of the hubs 200 are located on one side of the plane and project upwardly.
- the side of the hub 100 is radially intercepted by the blades 200.
- the intercepted wing profile is parallel to the plane described above, i.e., assuming that the sides of the hub 100 are deployed into a plane, the blade profiles of all of the blades 200 are parallel to the plane.
- the left end of the wing section may be the air outlet end 230, and the right end is the air inlet end 240.
- FIG. 4 the left end of the wing section may be the air outlet end 230, and the right end is the air inlet end 240.
- the upper curve 250 is the projection curve of the windward side 260, and the string 251 between the two curves is It is the connection between the inlet end 240 and the outlet end 230.
- the arrow of the air inlet end 240 indicates the direction of rotation of the air inlet end 240.
- the angle between the tangent to the direction of rotation and the string 251 is the angle of inclination of the blade 200, that is, the angle 1 in the figure.
- the arrow below the outlet end 230 is the windward side 260
- the inclination angle of the blade gradually decreases from the root of the blade to the top of the blade, and the outlet mounting angle gradually increases from the root of the blade to the top of the blade.
- the inclination angle of the blade root portion 210 is preferably 38° to 55°.
- the outlet mounting angle is preferably 90° to 135°; the angle of inclination of the tip portion 220 is preferably 18° to 35°, and the outlet mounting angle is preferably 105° to 150°.
- the oblique flow fan formed in the range of the parameters has a blade shape which can generate strong axial pulling force and strong centrifugal force, and the gas flow will not accumulate at the root of the blade nor escape at the top of the blade.
- the following table shows the inclination angle and installation angle of the position of a plurality of wing sections taken from the blade root 210 of the blade to the blade top 220 in the diagonal flow fan of the present embodiment, wherein the section shows 0% as the blade root 210, and the inclination angle thereof is 44.2°, the outlet installation angle is 104°; the section shows 100% as the tip top 220, the inclination angle is 23°, and the outlet installation angle is 125.7°.
- Figure 5 is a plan view of the wing plane of each of the above-mentioned wing sections, wherein the direction indicated by the arrow is the direction of the air flow.
- the blade shape of this embodiment is substantially as follows: the blade at the inlet end gradually curls inward from the root of the blade to the top of the blade, and the blade at the outlet end gradually extends outward from the root of the blade to the top of the blade. Therefore, the blade 200 which is spatially twisted and twisted in this embodiment can generate a strong axial pulling force, pull air from the outside into the air-conditioning cavity and generate a rapid airflow, and the airflow enters the blade 200 from the air inlet end 240. Rotate the space.
- the curled surface of the inlet end 240 is extremely easy to trap the airflow, so that the airflow is in the fan.
- the continuous lifting rises rapidly along the windward surface 260 to the outlet end 230; since the blade 200 gradually extends outward from the inlet end 240 to the outlet end 230, the airflow is neither at the blade root 210 during the climb. It does not escape from the top of the blade 220, so it does not cause loss of airflow, nor does it reduce the velocity of the airflow due to the blockage of the accumulated airflow, and thus generates a large amount of noise.
- the blade 200 which is spatially twisted and twisted in this embodiment can minimize the accumulation of low-energy fluid in the blade root portion 210, further improve the air blowing efficiency of the fan, and reduce noise.
- an air conditioner indoor unit includes: a housing 2, a heat exchanger (not shown), and a diagonal flow fan 4.
- the housing 2 is provided with an air inlet (not shown) and an air outlet 3, and the air duct is connected to the air inlet and the air outlet 3 in the housing 2, and the diagonal fan 4 can be disposed in the wind.
- the diagonal flow fan 4 has the diagonal flow fan 10 according to the above embodiment of the present invention.
- An air conditioning indoor unit has a diagonal flow fan 10, which is particularly suitable for use with a vertical air conditioner indoor unit, since the hub 100 of the diagonal flow fan 10 has a wind guiding surface 101, and the air guiding surface 101 is bottomed
- the end-to-top outer dimension is gradually increased, and the inlet end 240 hub ratio is smaller than the outlet end 230 hub ratio.
- the air-conditioning indoor unit of the present invention increases the air supply amount and improves the air supply efficiency while ensuring the air supply distance.
- an air passage through which air communicating from the air inlet to the air outlet 3 flows is provided in the casing 2, and a diagonal flow fan 4 is provided in the air passage.
- the diagonal flow fan 4 is also referred to as a mixed flow fan, and the diagonal flow fan adopts the diagonal flow fan 10 in the above embodiment of the present invention.
- the air supply direction of the diagonal flow fan 4 includes a component along the axial direction of the motor, and rotates along the impeller. The component of the tangential direction of the direction. The amount of air supplied by the diagonal flow fan 4 is smaller than that of the axial flow fan, and larger than that of the centrifugal fan.
- the supply air static pressure of the diagonal flow fan 4 is larger than that of the axial flow fan, and smaller than the centrifugal fan.
- the characteristics of the diagonal flow fan 4 itself are determined. Compared with the existing axial fan drive mode, there is a higher air supply static pressure and a farther air supply distance.
- the diagonal flow fan 4 includes a diagonal flow wind wheel 41 , a motor 43 and a motor shaft 44 , a motor 43 that drives the diagonal flow wind wheel 41 to rotate, and a motor that connects the motor 43 and the diagonal flow wind wheel 41 .
- the shaft 44 and the motor 43 drive the diagonal flow rotor 41 to rotate about the center axis 99.
- the diagonal flow wind wheel 41 includes a hub 100 having a small diameter on the air inlet side and a large diameter on the air discharge side, and a plurality of blades 200 disposed on the windward side of the hub 100.
- the air conditioner indoor unit 1 is a floor-type top four-sided air outlet type, and the diagonal flow fan 4 is used, which can improve the static air pressure on the one hand, overcome the flow resistance in the air passage, and of course include the air inlet.
- the flow resistance of the air inlet filter, heat exchanger, volute, air outlet and guide vane, plus a long air passage, can also be sent a long distance.
- the air from the tuyere is not perpendicular to the air outlet, but in the direction in which the diagonal fan 4 rotates, and has a component in the tangential direction, which can further improve the effect of the four sides of the wind, and there is no dead angle of the air supply. Improve the comfort of the air supply.
- the air conditioner indoor unit 1 further includes an air guiding member 5, and the air guiding member 5 is connected to an inner wall of the air duct, and the air guiding member 5 has a vertical direction.
- the air guiding channel, the diagonal flow fan 10 can be located in the air guiding channel.
- the inner wall surface of the hub 100 and the blade 200 of the diagonal flow fan 4 is provided with an air guiding member 5, and the air guiding member 5 is fixed to the inner wall surface of the casing 2 through the air guiding member connecting portion 17.
- the air guiding member 5 itself has a certain strength, and the inner surface of the air guiding member 5 has high processing precision and surface smoothness, which is favorable for cooperation with the rotating blade 200, which can facilitate air passage and reduce air resistance.
- the gap 7 there is a gap 7 between the air guiding member 5 and the inner wall surface of the casing 2.
- the gap 7 can be reduced outward.
- the heat transfer especially in the cooling condition, reduces the condensation on the surface of the casing 2 while reducing the noise propagation of the motor and airflow.
- the gap 7 between the volute 5 and the inner wall surface of the casing 2 may be filled with a heat insulating or noise absorbing layer.
- the blade 200 has a wind wheel cover 8 connected to each of the blades 200, i.e., a wind wheel cover 8 surrounding the blades between the top surfaces of the blades 200.
- the wind wheel cover 8 can strengthen the structural strength of each blade 200, and on the other hand, can make the airflow entering the air inlet 15 of the diagonal flow fan 4 accumulate, and the smaller diameter inlet of the lower part of the wind wheel cover 8 makes the inlet air The speed increases. Further, the structure in which the lower portion of the lower portion of the wind wheel cover 8 is large and the structure of the lower portion of the lower portion of the hub 100 is combined to form a duct in which the blade 200 pushes the air to be supercharged.
- an inlet air guiding ring 12 is disposed at the air inlet 15 of the diagonal flow fan 4, and is imported.
- the airflow diverted by the air guide ring 12 re-enters the air passage between the wind wheel cover 8 and the hub 100.
- the inlet air guide 12 reduces the area of the air passage, increases the wind speed at the inlet, and cooperates with the inner diameter of the wind wheel cover 8 to reduce the eddy current formed by the differential pressure generated by the diagonal flow fan 4, thereby reducing noise.
- a diffuser cone 11 coaxial with the hub 100 is disposed on the leeward side of the diagonal flow fan 4, i.e., on the larger diameter side of the hub 100, and the diffuser cone 11 It is a truncated cone-shaped structure having a large diameter on the air inlet side and a small diameter on the air discharge side.
- the diffuser cone 11 is fixed to the motor bracket 6, and an air passage is formed between the outer surface of the diffuser cone 11 and the inner surface of the casing 2 of the indoor unit (which may also be the inner surface of the air guiding member 5).
- a circular structure with a small lower area and a large upper area. The gradually increasing air passage thus formed effectively diffuses the air, reduces the air speed and flow loss, and increases the static pressure and the air supply distance of the air.
- the inner surface of the air guiding member 5 is inclined toward the indoor unit casing 2, so that the air passage there is further increased, that is, the air guiding portion corresponding to the diffuser cone 11
- the piece 5 has a structure for expanding the air passage. The air can be further diffused.
- the air conditioner indoor unit may be a floor type air conditioner indoor unit, the air outlet of the indoor unit is located at the upper front surface of the casing 2, and the diagonal flow fan 4 is generated at a medium level.
- the advantages of static pressure and large air volume are beneficial to the positive long-distance air supply, but the component of the wind speed rotation direction in the air duct is not conducive to the front air supply.
- a fixed air guiding wheel 13 is provided, and the fixed air guiding wheel 13 is fixedly connected to the inner wall surface of the air conditioning casing 2. In this embodiment, the air rotating direction in the air duct is smooth.
- the hour hand rotates, and the inclined direction of the fixed guide vane 14 provided on the fixed wind deflector 13 blocks the air in the clockwise direction, that is, the fixed wind deflector 13 is disposed on the leeward side of the diagonal flow fan 4, and the fixed wind guide wheel 13 is provided with a fixed wind guide vane 14 for obstructing the direction of air rotation, and a fixed wind guide wheel seal 18 is disposed at the middle of the fixed wind guide wheel 13, so that the area of the passing air can be reduced, so that all the air passes through the fixed guide vane 14 Perform a choke boost.
- the rotation speed of the air is reduced, and on the other hand, the air can be diffused to increase the static pressure of the air supply.
- FIG. 24 is an enlarged cross-sectional view of the indoor unit in the DD direction, and it can be seen that the outer casing of the indoor unit is formed by connecting a straight line segment L and an arc segment S connecting the straight segments, that is, the present invention
- the disclosed diagonal flow fan is an air conditioner indoor unit that can be used for other shapes that are not circular.
- the air passage of the diagonal flow fan fully utilizes the space inside the casing of the indoor unit, in this embodiment.
- the area of the volute accounts for more than 89% of the area of the indoor unit casing.
- the diagonal flow fan can effectively utilize the space inside the indoor unit casing, thereby reducing the air supply speed. Low air flow noise.
- the air outlet 3 of the floor-standing air conditioner indoor unit is located on the upper front surface of the casing 2, and the outer casing of the indoor unit is excessively cylindrical from the upper portion and the lower portion is excessively cylindrical.
- Fig. 26 is the installation diagram of the components related to the diagonal flow fan, as shown in Fig. 26 is the exploded view of the related components of the diagonal flow fan.
- the upper air guiding wheel 13 is fixed, and the upper part of the wide pressure cone 11 is in the fixed air guiding wheel 13, and the outer periphery of the diffuser cone 11 is combined with the inner circle of the fixed air guiding wheel 13, and is sealed from the center of the fixed air guiding wheel 13
- the position of the wind wheel seal is such that the air passage area is reduced, the local wind speed is increased, and the space is effectively utilized, and all the air needs to be fixed from the fixed wind guide 13 in the direction opposite to the rotation direction.
- the wind speed in the direction of rotation can be greatly reduced, on the other hand, the pressure can be further expanded, and the static pressure of the air supply can be increased to improve the air supply. Distance.
- a diffuser cone 11 coaxial with the hub 100 and a fixed wind deflector 13 are provided on the leeward side of the air outlet 16 of the diagonal flow fan.
- the diffuser cone 11 has a large diameter on the air inlet side and a small diameter on the air discharge side. Table structure.
- the fixed wind guide 13 is provided with a fixed wind guide vane 14 that blocks the direction of air rotation.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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KR20157000183A KR20150030697A (ko) | 2012-06-07 | 2012-11-28 | 사류 팬, 사류 송풍기 및 이를 구비한 에어컨 실내기 |
KR1020177002453A KR101783177B1 (ko) | 2012-06-07 | 2012-11-28 | 사류 팬, 사류 송풍기 및 이를 구비한 콘솔형 에어컨 |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220268483 CN202734057U (zh) | 2012-06-07 | 2012-06-07 | 空调器室内机 |
CN2012101873025A CN102705910A (zh) | 2012-06-07 | 2012-06-07 | 空调器室内机 |
CN201210187302.5 | 2012-06-07 | ||
CN201220268483.X | 2012-06-07 | ||
CN201220415824.1U CN202883468U (zh) | 2012-08-20 | 2012-08-20 | 落地式空调器及其斜流风扇 |
CN2012102988100A CN102852854A (zh) | 2012-08-20 | 2012-08-20 | 落地式空调器及其斜流风扇 |
CN201210298810.0 | 2012-08-20 | ||
CN201220415824.1 | 2012-08-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013181904A1 true WO2013181904A1 (zh) | 2013-12-12 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/CN2012/085406 WO2013181904A1 (zh) | 2012-06-07 | 2012-11-28 | 斜流风扇、斜流风机及具有其的空调室内机 |
Country Status (2)
Country | Link |
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KR (2) | KR101783177B1 (zh) |
WO (1) | WO2013181904A1 (zh) |
Cited By (10)
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CN104964340A (zh) * | 2015-05-26 | 2015-10-07 | 广东美的制冷设备有限公司 | 空调器 |
CN108488083A (zh) * | 2018-04-26 | 2018-09-04 | 英飞凌(深圳)智慧科技有限公司 | 一种风机及空气净化器 |
WO2019087078A1 (en) * | 2017-10-30 | 2019-05-09 | Zehnder Group International Ag | Cover plate for a fan, impeller and fan therewith |
CN110160146A (zh) * | 2019-06-25 | 2019-08-23 | 宁波奥克斯电气股份有限公司 | 一种空调室内机及空调器 |
CN110762620A (zh) * | 2019-11-08 | 2020-02-07 | 珠海格力电器股份有限公司 | 一种可逆送风的空调室内机和空调器 |
CN111750433A (zh) * | 2019-03-26 | 2020-10-09 | 广东美的制冷设备有限公司 | 空调器室内机和空调器 |
CN114001043A (zh) * | 2021-11-01 | 2022-02-01 | 宁波公牛生活电器有限公司 | 风扇和风扇灯 |
WO2023052361A1 (en) * | 2021-09-30 | 2023-04-06 | Philips Domestic Appliances Holding B.V. | Air delivery device |
WO2023172217A1 (en) * | 2022-03-10 | 2023-09-14 | Aytok Maki̇na İnşaat Plasti̇k Gida Maddeleri̇ Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Vortex cleaning screen filter |
CN111750433B (zh) * | 2019-03-26 | 2024-06-07 | 广东美的制冷设备有限公司 | 空调器室内机和空调器 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101726160B1 (ko) * | 2016-03-11 | 2017-04-12 | 고려엠지주식회사 | 무동력 자동세척 필터링장치용 임펠러 |
CN111322701A (zh) * | 2020-04-03 | 2020-06-23 | 杰马科技(中山)有限公司 | 无叶冷风扇 |
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WO2019087078A1 (en) * | 2017-10-30 | 2019-05-09 | Zehnder Group International Ag | Cover plate for a fan, impeller and fan therewith |
CN108488083A (zh) * | 2018-04-26 | 2018-09-04 | 英飞凌(深圳)智慧科技有限公司 | 一种风机及空气净化器 |
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CN110160146A (zh) * | 2019-06-25 | 2019-08-23 | 宁波奥克斯电气股份有限公司 | 一种空调室内机及空调器 |
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CN114001043A (zh) * | 2021-11-01 | 2022-02-01 | 宁波公牛生活电器有限公司 | 风扇和风扇灯 |
WO2023172217A1 (en) * | 2022-03-10 | 2023-09-14 | Aytok Maki̇na İnşaat Plasti̇k Gida Maddeleri̇ Sanayi̇ Ve Ti̇caret Li̇mi̇ted Şi̇rketi̇ | Vortex cleaning screen filter |
Also Published As
Publication number | Publication date |
---|---|
KR20150030697A (ko) | 2015-03-20 |
KR101783177B1 (ko) | 2017-09-28 |
KR20170027800A (ko) | 2017-03-10 |
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