CN103185030B - Inclined-flow centrifugal impeller on air-conditioning - Google Patents
Inclined-flow centrifugal impeller on air-conditioning Download PDFInfo
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Abstract
The present invention relates to field of ventilation equipment.Inclined-flow centrifugal impeller on air-conditioning, comprise ring leaf base plate, wheel hub, blade and baffle liner, blade is 7, angle, blade axle center angle between adjacent blades is different, blade air intake to outlet air end is distorted shape, upper air inlet angle and lower air intake angle angle are all not more than 10 °, and upper air-out angle and lower air-out angle are all between 20 °-45 °; Blade top is made up of the connection area be connected as a single entity and disconnected district, and connection area length accounts for the 80%-89% of vane tip length; Air-admitting surface between arbitrary neighborhood blade is the 76%-85% of corresponding exhaust outlet area.The advantage of this Inclined-flow centrifugal impeller on air-conditioning is novel structure, and air quantity is large and noise is low.
Description
Technical field
The present invention relates to field of ventilation equipment, particularly relate to a kind of Inclined-flow centrifugal impeller on air-conditioning.
Background technique
Inclined-flow centrifugal impeller is product conventional on air-conditioning, Inclined-flow centrifugal impeller comprises ring leaf base plate, wheel hub, blade and baffle liner, blade is fixed between ring leaf base plate and baffle liner, be connected as a single entity inside wheel hub and ring leaf base plate, wheel hub is concentric with ring leaf base plate, the center of hub top arranges axle sleeve, and during use, motor shaft rotates through axle sleeve upper shaft hole impeller.The usability of Inclined-flow centrifugal impeller is mainly reflected in air force and noise control aspect, air force and noise height are mutual, the large noise of general air quantity is relatively just high, the little noise of air quantity is naturally low, the parameter that the usability of Inclined-flow centrifugal impeller relates to is a lot, the shape of such as leaf base plate, wheel hub, blade and baffle liner, size and Placement etc.The very rational Inclined-flow centrifugal impeller on air-conditioning of air force and noise control is in the market few.
Summary of the invention
The object of the invention is the kind in order to enrich centrifugation blade, disclosing a kind of novel structure, the large and Inclined-flow centrifugal impeller on air-conditioning that noise is low of air quantity.
In order to realize above-mentioned object, present invention employs following technological scheme:
Inclined-flow centrifugal impeller on air-conditioning, comprise ring leaf base plate, wheel hub, blade and baffle liner, blade is fixed between ring leaf base plate and baffle liner, material-saving die cavity is set in blade, be connected as a single entity inside wheel hub and ring leaf base plate, wheel hub is concentric with ring leaf base plate, the top of wheel hub is provided with the cylindrical plastic shaft hole sleeve be connected as a single entity with it, wheel hub is provided with multiple radiation hole, blade is 7, angle, blade axle center angle between adjacent blades is different, angle, blade axle center angle is all between 42 °-60 °, angle, blade axle center is that two blades and axle center radius form angle, angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °, angle, any blade axle center angle maximum difference is not more than 10 °, blade air intake to outlet air end is distorted shape, and the air intake angle of blade is divided into the upper air inlet angle near baffle liner and the lower air intake angle near ring leaf base plate, and upper air inlet angle and lower air intake angle angle are all not more than 10 °, and upper air inlet angle angle is less than lower air intake angle angle, the air-out angle of blade is divided into the upper air-out angle near baffle liner and the lower air-out angle near ring leaf base plate, upper air-out angle and lower air-out angle are all between 20 °-45 °, upper air-out angle angle is less than lower air-out angle angle, and the difference between upper air-out angle angle and lower air-out angle angle is between 5 °-18 °, the inner and the outer end of all blades be arranged on ring leaf base plate form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 65%-73% of blade, and the outer diameter of a circle of blade is between 420mm-480mm, blade top is made up of the connection area be connected as a single entity and disconnected district, connection area and the baffle liner of blade are fixed by ultrasonic welding, disconnected district is in the air intake direction inside blade, and connection area is in the outside in disconnected district, and connection area length accounts for the 80%-89% of vane tip length, connection area place is provided with stiffener, and baffle liner is provided with the auxiliary reinforcing element with stiffener position and structure matching, the tie point in connection area and disconnected district is highest point and the summit of blade, air-admitting surface between arbitrary neighborhood blade is the 76%-85% of corresponding exhaust outlet area, in described ring leaf base plate, circular diameter is the 45%-50% of outside diameter, the height of blade outboard end is the 85%-90% of blade medial extremity height, the height of blade outboard end is the 73%-77% of blade apex height, the bottom of blade outboard end is concordant with ring leaf plate outer side limit, hub height is the 68%-74% of impeller side height, and impeller side height is the whole height of ring leaf base plate, blade and baffle liner.
As preferably, the air-admitting surface between arbitrary neighborhood blade is the 79%-80% of corresponding exhaust outlet area, and obtain best static pressure, air intake efficiency at least improves 4%, the length of material-saving die cavity is the 40%-45% of length of blade, the height of baffle liner is the 75%-85% of baffle liner width, the height of baffle liner is the 55%-65% of blade exhaust outlet height, guide face on baffle liner is connected and composed by the arc shaped surface that two sections of radius of the radian values are different, its radius of the radian value of the arc shaped surface of its middle and upper part is between 40-55mm, its radius of the radian value of the arc shaped surface of bottom is between 65-85mm, the outside air-out end face of blade is provided with sawtooth, the outer ledge of baffle liner is provided with the flange be connected as a single entity with it, adopt above-mentioned preference data at least increase by 2% air quantity and noise rise not obvious.
As preferably, angle, 7 blade axle center is 47 °, 54 °, 53 °, 50 °, 49 °, 55 ° and 52 ° respectively, effectively can reduce the rotational noise 4dB of impeller; Upper air inlet angle is 1 °, and lower air intake angle is 8 °, and upper air-out angle is 25 °, and lower air-out angle is 40 °; In blade, circular diameter is 324.5mm, and blade outside diameter is 462mm; The thickness size of blade is no more than 17mm; Connection area length is 146.5mm, and vane tip length is 171.2mm, and length of blade is 171.2mm; The height 85.4mm of blade outboard end, the height of blade medial extremity is 97.3mm, and the height of the tie point in connection area and disconnected district is 113.2mm; The length of material-saving die cavity is 73.4mm, and the widest position of blade is 15.2mm, and the widest position of material-saving die cavity is 5.6mm; In ring leaf base plate, circular diameter is 220.2mm, and ring leaf base plate outside diameter is 462mm; Hub height is 100mm, and impeller side height is 140mm; The height of baffle liner is 51.6mm, and the width of baffle liner is 65.1mm; The height of blade exhaust outlet is 85.4mm.Utilization efficiency is best, and air quantity is maximum and noise is minimum.
As preferably, described radiation hole is 7, the arrangements of 7 equidistant rules of radiation hole.
As preferably, stiffener is projection, and described auxiliary reinforcing element is groove.
As preferably, stiffener is groove, and described auxiliary reinforcing element is projection.
As preferably, upper air inlet angle is air intake surface top end with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface top circular arc tangential line, lower air intake angle is air intake surface bottom end with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface bottom circular arc tangential line, upper air-out angle is outlet air surface top end with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface top circular arc tangential line, and lower air-out angle is outlet air surface bottom end with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface bottom circular arc tangential line.
Have employed the Inclined-flow centrifugal impeller on air-conditioning of above-mentioned technological scheme, blade is 7, angle, blade axle center angle between adjacent blades is different, angle, blade axle center angle is all between 42 °-60 °, angle, blade axle center is that two blades and axle center radius form angle, angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °, angle, any blade axle center angle maximum difference is not more than 10 °, effectively can reduce the rotational noise of impeller, especially can eliminate the noise spike at vane rotary frequency multiplication place.Blade air intake to outlet air end is distorted shape, upper air inlet angle and lower air intake angle angle are all not more than 10 °, and upper air inlet angle angle is less than lower air intake angle angle, upper air-out angle and lower air-out angle are all between 20 °-45 °, upper air-out angle angle is less than lower air-out angle angle, and the difference between upper air-out angle angle and lower air-out angle angle is between 5 °-18 °, upper air-out angle is different with lower air-out angle angle, the air-out of blade is linearly changed along blade height direction, effectively can weaken noise energy superposition, reduce noise.Disconnected district is in the air intake direction inside blade, increases incoming air area, and air quantity increases.Connection area length accounts for the 80%-89% of vane tip length, can ensure the bulk strength of fan blade, can promote air quantity again.The height of blade outboard end is the 85%-90% of blade medial extremity height, and the height of blade outboard end is the 73%-77% of blade apex height, and hub height is the 68%-74% of impeller side height, and the change of air inlet/outlet angle is mild, at least increases by the air quantity of 1%.Air-admitting surface between arbitrary neighborhood blade is the 76%-85% of corresponding exhaust outlet area, and obtain good static pressure, air intake efficiency at least improves 2%.The advantage of this Inclined-flow centrifugal impeller on air-conditioning is novel structure, and air quantity is large and noise is low.
Accompanying drawing explanation
Fig. 1: the Inclined-flow centrifugal impeller structural representation on air-conditioning of the embodiment of the present invention.
Fig. 2: the schematic diagram of the Inclined-flow centrifugal impeller bottom surface on air-conditioning of the embodiment of the present invention.
Fig. 3: the Inclined-flow centrifugal impeller side schematic view on air-conditioning not installing baffle liner in the embodiment of the present invention.
Fig. 4: the Inclined-flow centrifugal impeller plan view one on air-conditioning not installing baffle liner in the embodiment of the present invention.
Fig. 5: the Inclined-flow centrifugal impeller plan view two on air-conditioning not installing baffle liner in the embodiment of the present invention.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the specific embodiment of the present invention is made a detailed explanation.
As shown in Figure 1, Figure 2, the Inclined-flow centrifugal impeller on air-conditioning shown in Fig. 3, Fig. 4 and Fig. 5, mainly comprise ring leaf base plate 1, wheel hub 2, blade 3 and baffle liner 4, blade 3 is fixed between ring leaf base plate 1 and baffle liner 4, material-saving die cavity 32 is set in blade 3, be connected as a single entity inside wheel hub 2 and ring leaf base plate 1, wheel hub 2 is concentric with ring leaf base plate 1, the top of wheel hub 2 is provided with the cylindrical plastic shaft hole sleeve 5 be connected as a single entity with it, wheel hub 2 is provided with the arrangement of 7 radiation holes, 21,7 radiation holes 21 equidistant rule centered by cylindrical plastic shaft hole sleeve 5.
Blade 3 is 7, angle, blade axle center angle between adjacent blades 3 is different, angle, blade axle center angle is all between 42 °-60 °, angle, blade axle center is that two blades and axle center radius form angle, angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °, angle, any blade axle center angle maximum difference is not more than 10 °, angle, blade axle center angle difference can reduce the rotational noise of impeller effectively, especially the noise spike at vane rotary frequency multiplication place can be eliminated, the Inclined-flow centrifugal impeller for air-conditioning on identical relative to the angle, axle center of same Dimensions can reduce the rotational noise of impeller.
Blade 3 air intake is distorted shape to outlet air end, the air intake angle of blade is divided into the upper air inlet angle a1 near the baffle liner 4 and lower air intake angle a2 near ring leaf base plate 1, upper air inlet angle a1 and lower air intake angle a2 angle are all not more than 10 °, and upper air inlet angle a1 angle is less than lower air intake angle a2 angle; The air-out angle of blade is divided into the lower air-out angle b2 of 1 plate at the bottom of the upper air-out angle b1 and close ring leaf of baffle liner 4, upper air-out angle b1 and lower air-out angle b2 is all between 20 °-45 °, upper air-out angle b1 angle is less than lower air-out angle angle b2, and the difference between upper air-out angle b1 angle and lower air-out angle angle b2 is between 5 °-18 °.Upper air inlet angle a1 is air intake surface top end with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface top circular arc tangential line, and lower air intake angle a2 is air intake surface bottom end with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface bottom circular arc tangential line.Upper air-out angle b1 is outlet air surface top end with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface top circular arc tangential line, and lower air-out angle b2 is outlet air surface bottom end with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface bottom circular arc tangential line.Upper air inlet angle a1 is different with lower air intake angle a2 angle, and upper air-out angle b1 is different with lower air-out angle b2 angle, and the air-out of blade 3 is linearly changed along blade height direction, effectively can weaken noise energy superposition, at least reduce noise 2dB.
Blade 3 top is made up of the connection area 33 be connected as a single entity and disconnected district 34, connection area 33 and the baffle liner 4 of blade are fixed by ultrasonic welding, disconnected district 34 is in the air intake direction inside blade 3, connection area 33 is in the outside in disconnected district 34, the tie point in connection area 33 and disconnected district 34 is highest point and the summit of blade 3, connection area 33 length accounts for the 80%-89% of blade 3 top length, the intensity of the connection of blade 3 and baffle liner 4 can be ensured, lifting air quantity that again can be suitable, air-admitting surface between arbitrary neighborhood blade 3 is the 76%-85% of corresponding exhaust outlet area, and the air-admitting surface between arbitrary neighborhood blade 3 is the 79%-80% of corresponding exhaust outlet area, best static pressure can be obtained, air intake efficiency at least improves 4%.
The inner and the outer end of all blades be arranged on ring leaf base plate 1 form blade inner circle and blade cylindrical respectively, in blade, diameter of a circle is the outer diameter of a circle 65%-73% of blade, the outer diameter of a circle of blade is between 420mm-480mm, and in ring leaf base plate 1, circular diameter is the 45%-50% of outside diameter; The height of blade outboard end is the 85%-90% of blade medial extremity height, the height of blade outboard end is the 73%-77% of blade apex height, the bottom of blade outboard end is concordant with ring leaf plate outer side limit, wheel hub 2 height is the 68%-74% of impeller side height, and impeller side height is the whole height after ring leaf base plate 1, blade 3 and baffle liner 4 have assembled.The length of material-saving die cavity 32 is 40%-45% of length of blade, the height of baffle liner 4 is 75%-85% of baffle liner 4 width, the height of baffle liner 4 is 55%-65% of blade exhaust outlet height, guide face on baffle liner 4 is connected and composed by the arc shaped surface that two sections of radius of the radian values are different, its radius of the radian value of the arc shaped surface of its middle and upper part is between 40-55mm, and its radius of the radian value of the arc shaped surface of bottom is between 65-85mm.Adopt above-mentioned preference data at least increase by 2% air quantity and noise rise not obvious.
The outside air-out end face of blade 3 is provided with sawtooth 31, and the outer ledge of baffle liner 4 is provided with the flange 41 be connected as a single entity with it.Connection area 33 place is provided with stiffener, and baffle liner 4 is provided with the auxiliary reinforcing element with stiffener position and structure matching, and stiffener is projection, auxiliary reinforcing element is the groove mated with projection, in like manner, stiffener also can be groove, and auxiliary reinforcing element is the projection with matching grooves.
The optimal parameter of above-mentioned Inclined-flow centrifugal impeller on air-conditioning is as follows, and angle, 7 blade axle center is 47 °, 54 °, 53 °, 50 °, 49 °, 55 ° and 52 ° respectively, reduces the rotational noise 4dB of impeller.Upper air inlet angle a1 is 1 °, and lower air intake angle a2 is 8 °, and upper air-out angle b1 is 25 °, and lower air-out angle b2 is 40 °; In blade, circular diameter is 324.5mm, and blade outside diameter is 462mm; The thickness size of blade 3 is no more than 17mm; Connection area 33 length is 146.5mm, and blade 3 top length is 171.2mm, and blade 3 length is 171.2mm, the height 85.4mm of blade outboard end, and the height of blade medial extremity is 97.3mm, and the height of the tie point in connection area 33 and disconnected district 34 is 113.2mm; The length of material-saving die cavity 32 is 73.4mm, and the thickness of blade 3 is 15.2mm, and the widest position of material-saving die cavity 32 is 5.6mm; In ring leaf base plate 1, circular diameter is 220.2mm, and ring leaf base plate 1 outside diameter is 462mm; Wheel hub 2 height is 100mm, and impeller side height is 140mm; The height of baffle liner 4 is 51.6mm, and the width of baffle liner 4 is 65.1mm; The height of blade exhaust outlet is 85.4mm.Adopt the Inclined-flow centrifugal impeller on air-conditioning of said structure and parameter, noise is effectively reduced under the prerequisite that air quantity increases, its air quantity of the Inclined-flow centrifugal impeller on air-conditioning that Dimensions is similar be in the market generally 2200 cubic metres per hour, noise is generally 49 decibels, adopt its air quantity of the Inclined-flow centrifugal impeller on air-conditioning of above-mentioned parameter be 2300 cubic metres per hour, noise is 43 decibels, and namely air quantity is large and noise is low.
Claims (6)
1. the Inclined-flow centrifugal impeller on air-conditioning, comprise ring leaf base plate, wheel hub, blade and baffle liner, blade is fixed between ring leaf base plate and baffle liner, material-saving die cavity is set in blade, be connected as a single entity inside wheel hub and ring leaf base plate, wheel hub is concentric with ring leaf base plate, the top of wheel hub is provided with the cylindrical plastic shaft hole sleeve be connected as a single entity with it, wheel hub is provided with multiple radiation hole, it is characterized in that blade is 7, angle, blade axle center angle between adjacent blades is different, angle, blade axle center angle is all between 42 °-60 °, angle, blade axle center is that two blades and axle center radius form angle, angle, arbitrary neighborhood blade axle center angle difference is not more than 8 °, angle, any blade axle center angle maximum difference is not more than 10 °, blade air intake to outlet air end is distorted shape, and the air intake angle of blade is divided into the upper air inlet angle near baffle liner and the lower air intake angle near ring leaf base plate, and upper air inlet angle and lower air intake angle angle are all not more than 10 °, and upper air inlet angle angle is less than lower air intake angle angle, the air-out angle of blade is divided into the upper air-out angle near baffle liner and the lower air-out angle near ring leaf base plate, upper air-out angle and lower air-out angle are all between 20 °-45 °, upper air-out angle angle is less than lower air-out angle angle, and the difference between upper air-out angle angle and lower air-out angle angle is between 5 °-18 °, the inner and the outer end of all blades be arranged on ring leaf base plate form blade inner circle and blade cylindrical respectively, and in blade, diameter of a circle is the outer diameter of a circle 65%-73% of blade, and the outer diameter of a circle of blade is between 420mm-480mm, blade top is made up of the connection area be connected as a single entity and disconnected district, connection area and the baffle liner of blade are fixed by ultrasonic welding, disconnected district is in the air intake direction inside blade, and connection area is in the outside in disconnected district, and connection area length accounts for the 80%-89% of vane tip length, connection area place is provided with stiffener, and baffle liner is provided with the auxiliary reinforcing element with stiffener position and structure matching, the tie point in connection area and disconnected district is highest point and the summit of blade, air-admitting surface between arbitrary neighborhood blade is the 76%-85% of corresponding exhaust outlet area, in described ring leaf base plate, circular diameter is the 45%-50% of outside diameter, the height of blade outboard end is the 85%-90% of blade medial extremity height, the height of blade outboard end is the 73%-77% of blade apex height, the bottom of blade outboard end is concordant with ring leaf plate outer side limit, hub height is the 68%-74% of impeller side height, and impeller side height is the whole height of ring leaf base plate, blade and baffle liner, the length of material-saving die cavity is the 40%-45% of length of blade.
2., according to the Inclined-flow centrifugal impeller on air-conditioning that claim 1 is stated, it is characterized in that angle, 7 blade axle center is 47 °, 54 °, 53 °, 50 °, 49 °, 55 ° and 52 ° respectively; Upper air inlet angle is 1 °, and lower air intake angle is 8 °, and upper air-out angle is 25 °, and lower air-out angle is 40 °; In blade, circular diameter is 324.5mm, and blade outside diameter is 462mm; The thickness size of blade is no more than 17mm; Connection area length is 146.5mm, and vane tip length is 171.2mm, and length of blade is 171.2mm; The height 85.4mm of blade outboard end, the height of blade medial extremity is 97.3mm, and the height of the tie point in connection area and disconnected district is 113.2mm; The length of material-saving die cavity is 73.4mm, and the widest position of blade is 15.2mm, and the widest position of material-saving die cavity is 5.6mm; In ring leaf base plate, circular diameter is 220.2mm, and ring leaf base plate outside diameter is 462mm; Hub height is 100mm, and impeller side height is 140mm; The height of baffle liner is 51.6mm, and the width of baffle liner is 65.1mm; The height of blade exhaust outlet is 85.4mm.
3. the Inclined-flow centrifugal impeller on air-conditioning according to claim 1, is characterized in that described radiation hole is 7, the arrangement of 7 equidistant rules of radiation hole.
4. the Inclined-flow centrifugal impeller on air-conditioning according to claim 1, it is characterized in that described stiffener is projection, described auxiliary reinforcing element is groove.
5. the Inclined-flow centrifugal impeller on air-conditioning according to claim 1, it is characterized in that described stiffener is groove, described auxiliary reinforcing element is projection.
6. the Inclined-flow centrifugal impeller on air-conditioning according to claim 1, it is characterized in that upper air inlet angle is air intake surface top end with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface top circular arc tangential line, lower air intake angle is air intake surface bottom end with the angle of the contrary tangent direction of fan blade sense of rotation and blade air intake surface bottom circular arc tangential line, upper air-out angle is outlet air surface top end with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface top circular arc tangential line, lower air-out angle is outlet air surface bottom end with the angle of the contrary tangent direction of fan blade sense of rotation and blade outlet air surface bottom circular arc tangential line.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105090104A (en) * | 2015-06-25 | 2015-11-25 | 海信（山东）空调有限公司 | Air conditioner outdoor unit with inclined centrifugal fan and air conditioner |
| CN105508296A (en) * | 2016-01-28 | 2016-04-20 | 珠海格力电器股份有限公司 | Air conditioner indoor unit, centrifugal fan blade and volute assembly and centrifugal fan blade |
| CN105782113B (en) * | 2016-05-04 | 2018-12-04 | 珠海格力电器股份有限公司 | Fan blade and air conditioner |
| CN107559958B (en) * | 2017-08-25 | 2024-04-09 | 珠海凌达压缩机有限公司 | Air conditioner indoor unit and air conditioner |
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| CN2158003Y (en) * | 1992-12-08 | 1994-03-02 | 河北工学院 | Efficiency energy-saving fan specially for warming machine use |
| CN1802512A (en) * | 2003-11-27 | 2006-07-12 | 大金工业株式会社 | Blade wheel for centrifugal blower and centerifugal blower with the same |
| EP2264320A1 (en) * | 2008-04-18 | 2010-12-22 | Mitsubishi Electric Corporation | Turbofan and air conditioner |
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