CN103195753B - Backswept impeller - Google Patents
Backswept impeller Download PDFInfo
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- CN103195753B CN103195753B CN201310114102.1A CN201310114102A CN103195753B CN 103195753 B CN103195753 B CN 103195753B CN 201310114102 A CN201310114102 A CN 201310114102A CN 103195753 B CN103195753 B CN 103195753B
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Abstract
The present invention relates to field of ventilation equipment.Backswept impeller, comprise ring leaf base plate, wheel hub, blade and baffle liner, be connected as a single entity inside wheel hub and 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, blade is 9, 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; The air-out angle of blade is divided into the upper air-out angle of close baffle liner and goes out air intake angle under ring leaf base plate; Blade top is made up of the connection area be connected as a single entity and disconnected district, and the air-admitting surface between arbitrary neighborhood blade is the 70%-75% of corresponding exhaust outlet area.The advantage of this backswept impeller 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 impeller.
Background technique
Backswept impeller is the vitals in air-conditioning, backswept 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 backswept 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 backswept impeller relates to is a lot, the shape of such as leaf base plate, wheel hub, blade and baffle liner, size and Placement etc.Very reasonably backswept impeller is few in air force and noise control in the market.
Summary of the invention
The object of the invention is the kind in order to enrich impeller, disclosing a kind of novel structure, the large and backswept impeller that noise is low of air quantity.
In order to realize above-mentioned object, present invention employs following technological scheme:
Backswept impeller, 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 9, blade air intake to outlet air end is distorted shape, 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, upper air inlet angle and lower air intake angle angle are all not more than 10 °, the difference of upper air inlet angle and lower air intake angle angle is within 3 °, 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, and upper air-out angle and lower air-out angle are all between 25 °-35 °, and the difference of upper air-out angle angle and lower air-out angle angle is within 5 °, 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 70%-76% of the outer diameter of a circle of blade, 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 50%-60% of vane tip length, the tie point in connection area and disconnected district is highest point and the summit of blade, and in blade, the height of outboard end is the 85%-95% of blade apex height, air-admitting surface between arbitrary neighborhood blade is the 70%-75% of corresponding exhaust outlet area, hub height is the 63%-72% of impeller side height, and described 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 73%-74% 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 45%-55% of length of blade; In described ring leaf base plate, circular diameter is the 45%-55% of outside diameter, and ring leaf base plate outside diameter is between 500mm-550mm; The height of baffle liner is identical with baffle liner width dimensions; The height of baffle liner is the 45%-55% of blade exhaust outlet height, and the guide face on baffle liner is arc shaped surface, adopt above-mentioned preference data at least increase by 2% air quantity and noise rise not obvious.
As preferably, upper air inlet angle is 3 °, and lower air intake angle is 2 °, and upper air-out angle is 30 °, and lower air-out angle is 31 °; In blade, circular diameter is 388.5mm, and blade outside diameter is 520mm; The thickness size of blade is no more than 19mm; Connection area length is 83.4mm, and length of blade is 154.4mm, and vane tip length is 154.4mm; The height 113.5mm of blade outboard end, the height of blade medial extremity is 112.9mm, and the height of the tie point in connection area and disconnected district is 124.9mm; The length of material-saving die cavity is 74.1mm, and the widest position of blade is 16.8mm, and the widest position of material-saving die cavity is 9.5mm; In ring leaf base plate, circular diameter is 274.3mm, and ring leaf base plate outside diameter is 520mm, and the bottom of blade outboard end is concordant with ring leaf plate outer side limit, and hub height is 115.8mm, and impeller side height is 171.7mm; The height of baffle liner is 55.2mm, and the height of blade exhaust outlet is 113.5mm.Utilization efficiency is best, and air quantity is maximum and noise is minimum.
As preferably, described radiation hole is 5, the arrangements of 5 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.
Have employed the backswept impeller of above-mentioned technological scheme, blade is 9, 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 °, upper air-out angle and lower air-out angle all between 25 °-35 ° the upper air inlet angle of blade different with lower air intake angle angle and difference very little, the difference of angle is within 3 °, upper air-out angle is different with lower air-out angle angle and difference is very little, the difference of angle is within 5 °, the air inlet/outlet of blade is linearly changed along blade height direction, and the Trend Stationary of change, effectively can weaken noise energy superposition, noise at least can reduce 3dB.Disconnected district is in the air intake direction inside blade, increases incoming air area, and air quantity increases.Connection area length accounts for the 50%-60% of vane tip length, can ensure the bulk strength of impeller, can promote air quantity again.In blade, the height of outboard end is the 85%-95% of blade apex height, and the change of air inlet/outlet angle is mild, and hub height is the 63%-72% of impeller side height, at least increases by the air quantity of 1%.Air-admitting surface between arbitrary neighborhood blade is the 70%-75% of corresponding exhaust outlet area, and obtain good static pressure, air intake efficiency at least improves 2%.The advantage of this backswept impeller is novel structure, and air quantity is large and noise is low.
Accompanying drawing explanation
Fig. 1: the structural representation of the backswept impeller of the embodiment of the present invention.
Fig. 2: the schematic diagram of the bottom surface of the backswept impeller of the embodiment of the present invention.
Fig. 3: the backswept impeller side schematic view not installing baffle liner in the embodiment of the present invention.
Fig. 4: the backswept impeller plan view not installing baffle liner in the embodiment of the present invention.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the specific embodiment of the present invention is made a detailed explanation.
Backswept impeller as shown in Figure 1, Figure 2, Figure 3 and Figure 4, 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 31 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 5 radiation holes, 21,5 radiation holes 21 equidistant rule centered by cylindrical plastic shaft hole sleeve 5.
Blade 3 is 9, blade 3 air intake is distorted shape to outlet air end, the air intake angle of blade 3 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 the difference of upper air inlet angle a1 and lower air intake angle a2 angle is within 3 °.The air-out angle of blade is divided into the upper air-out angle b1 near the baffle liner 4 and lower air-out angle b2 near ring leaf base plate 1, and upper air-out angle b1 and lower air-out angle b2 is all between 25 °-35 °, and the difference of upper air-out angle b1 angle and lower air-out angle b2 angle is within 5 °.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.The upper air inlet angle a1 of blade is different with lower air intake angle a2 angle and difference is very little, the difference of angle is within 3 °, upper air-out angle b1 is different with lower air-out angle b2 angle and difference is very little, the difference of angle is within 5 °, the air inlet/outlet of blade 3 is linearly changed along blade height direction, and the Trend Stationary of change, effectively can weaken noise energy superposition, noise at least can reduce 3dB.
Blade 3 top is made up of the connection area 32 be connected as a single entity and disconnected district 33, connection area 32 and the baffle liner 4 of blade are fixed by ultrasonic welding, disconnected district 33 is in the air intake direction inside blade 3, connection area 32 is in the outside in disconnected district 33, connection area 32 length accounts for the 50%-60% of blade 3 top length, the tie point in connection area 32 and disconnected district 33 is highest point and the summit of blade 3, and in blade 3, the height of outboard end is the 85%-95% of blade 3 apex height.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 70%-76% of blade, wheel hub 2 height is the 63%-72% of impeller side height, described impeller side height is the whole height after ring leaf base plate 1, blade 3 and baffle liner 4 have assembled, at least increase by the incoming air area of 2%, namely at least increase by the air quantity of 2%.The length of material-saving die cavity 31 is 45%-55% of blade 3 length.In ring leaf base plate 1, circular diameter is the 45%-55% of outside diameter, ring leaf base plate 1 outside diameter is between 500mm-550mm, the height of baffle liner 4 is identical with baffle liner 4 width dimensions, the height of baffle liner 4 is 45%-55% of blade exhaust outlet height, guide face on baffle liner 4 is arc shaped surface, adopt above-mentioned preference data at least increase by 2% air quantity and noise rise not obvious.
Air-admitting surface between arbitrary neighborhood blade 3 is the 70%-75% of corresponding exhaust outlet area, and the air-admitting surface between arbitrary neighborhood blade 3 is the 73%-74% of corresponding exhaust outlet area, can obtain best static pressure, air intake efficiency at least improves 4%.
Connection area 32 place is provided with stiffener, and baffle liner 4 is provided with the auxiliary reinforcing element with stiffener position and structure matching.Stiffener is projection, and auxiliary reinforcing element is the groove mated with projection, and in like manner, stiffener also can be groove, and auxiliary reinforcing element is the projection with matching grooves.
The parameter of above-mentioned backswept impeller the best is as follows, and upper air inlet angle a1 is 3 °, and lower air intake angle a2 is 2 °, and upper air-out angle b1 is 30 °, and lower air-out angle b2 is 31 °.In blade, circular diameter is 388.5mm, and blade outside diameter is 520mm, and the thickness size of blade 3 is no more than 19mm.Connection area 32 length is 83.4mm, blade 3 length is 154.4mm, blade 3 top length is 154.4mm, the height 113.5mm of blade outboard end, the height of blade medial extremity is 112.9mm, and the height of the tie point in connection area 32 and disconnected district 33 is 124.9mm, and the length of material-saving die cavity 31 is 74.1mm, the widest position of blade 3 is 16.8mm, and the widest position of material-saving die cavity 31 is 9.5mm.In ring leaf base plate 1, circular diameter is 274.3mm, ring leaf base plate 1 outside diameter is 520mm, the bottom of blade 3 outboard end is concordant with ring leaf base plate 1 outer side, wheel hub 2 height is 115.8mm, impeller side height is 171.7mm, the height of baffle liner 4 is 55.2mm, and the height of blade exhaust outlet is 113.5mm.
Adopt the backswept impeller of said structure and parameter, noise is effectively reduced under the prerequisite that air quantity increases, its air quantity of backswept impeller that Dimensions is similar be in the market generally 2400 cubic metres per hour, noise is generally 51 decibels, adopt its air quantity of backswept impeller of above-mentioned parameter be 2500 cubic metres per hour, noise is 45 decibels, and namely air quantity is large and noise is low.
Claims (3)
1. backswept impeller, 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 9, blade air intake to outlet air end is distorted shape, 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, upper air inlet angle and lower air intake angle angle are all not more than 10 °, the difference of upper air inlet angle and lower air intake angle angle is within 3 °, 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, and upper air-out angle and lower air-out angle are all between 25 °-35 °, and the difference of upper air-out angle angle and lower air-out angle angle is within 5 °, 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 70%-76% of the outer diameter of a circle of blade, 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 50%-60% of vane tip length, the tie point in connection area and disconnected district is highest point and the summit of blade, and in blade, the height of outboard end is the 85%-95% of blade apex height, air-admitting surface between arbitrary neighborhood blade is the 70%-75% of corresponding exhaust outlet area, hub height is the 63%-72% of impeller side height, and described 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 45%-55% of length of blade, in described ring leaf base plate, circular diameter is the 45%-55% of outside diameter, and ring leaf base plate outside diameter is between 500mm-550mm, the height of baffle liner is identical with baffle liner width dimensions, the height of baffle liner is the 45%-55% of blade exhaust outlet height, and the guide face on baffle liner is arc shaped surface.
2. backswept impeller according to claim 1, it is characterized in that upper air inlet angle is 3 °, lower air intake angle is 2 °, and upper air-out angle is 30 °, and lower air-out angle is 31 °; In blade, circular diameter is 388.5mm, and blade outside diameter is 520mm; The thickness size of blade is no more than 19mm; Connection area length is 83.4mm, and length of blade is 154.4mm, and vane tip length is 154.4mm; The height 113.5mm of blade outboard end, the height of blade medial extremity is 112.9mm, and the height of the tie point in connection area and disconnected district is 124.9mm; The length of material-saving die cavity is 74.1mm, and the widest position of blade is 16.8mm, and the widest position of material-saving die cavity is 9.5mm; In ring leaf base plate, circular diameter is 274.3mm, and ring leaf base plate outside diameter is 520mm, and the bottom of blade outboard end is concordant with ring leaf plate outer side limit, and hub height is 115.8mm, and impeller side height is 171.7mm; The height of baffle liner is 55.2mm, and the height of blade exhaust outlet is 113.5mm.
3. backswept impeller according to claim 1, is characterized in that radiation hole is 5, the arrangement of 5 equidistant rules of radiation hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114102.1A CN103195753B (en) | 2013-04-03 | 2013-04-03 | Backswept impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310114102.1A CN103195753B (en) | 2013-04-03 | 2013-04-03 | Backswept impeller |
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| Publication Number | Publication Date |
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| CN103195753A CN103195753A (en) | 2013-07-10 |
| CN103195753B true CN103195753B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310114102.1A Active CN103195753B (en) | 2013-04-03 | 2013-04-03 | Backswept impeller |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2605404Y (en) * | 2002-12-27 | 2004-03-03 | 上海通用风机股份有限公司 | Vane of high-pressure centrifugal fan |
| 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 |
| JP2007170331A (en) * | 2005-12-26 | 2007-07-05 | Daikin Ind Ltd | Turbofan and indoor unit of air conditioner using it |
| CN101960150A (en) * | 2008-04-18 | 2011-01-26 | 三菱电机株式会社 | Turbofan and air conditioner |
| CN203175973U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Backward-style impeller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100847523B1 (en) * | 2006-12-29 | 2008-07-22 | 엘지전자 주식회사 | Turbo fan |
-
2013
- 2013-04-03 CN CN201310114102.1A patent/CN103195753B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2605404Y (en) * | 2002-12-27 | 2004-03-03 | 上海通用风机股份有限公司 | Vane of high-pressure centrifugal fan |
| 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 |
| JP2007170331A (en) * | 2005-12-26 | 2007-07-05 | Daikin Ind Ltd | Turbofan and indoor unit of air conditioner using it |
| CN101960150A (en) * | 2008-04-18 | 2011-01-26 | 三菱电机株式会社 | Turbofan and air conditioner |
| CN203175973U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Backward-style impeller |
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| Publication number | Publication date |
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| CN103195753A (en) | 2013-07-10 |
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