CN103195754B - Inclined-flow centrifugal impeller - Google Patents
Inclined-flow centrifugal impeller Download PDFInfo
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- CN103195754B CN103195754B CN201310114124.8A CN201310114124A CN103195754B CN 103195754 B CN103195754 B CN 103195754B CN 201310114124 A CN201310114124 A CN 201310114124A CN 103195754 B CN103195754 B CN 103195754B
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Abstract
The present invention relates to field of ventilation equipment.Inclined-flow centrifugal impeller, comprise ring leaf base plate, wheel hub, blade and baffle liner, the outer ledge of baffle liner is provided with the flange be connected as a single entity with it, described blade is 7, 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 °-40 °; 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 65%-72% of vane tip length; Air-admitting surface between arbitrary neighborhood blade is the 73%-77% of corresponding exhaust outlet area.The advantage of this Inclined-flow centrifugal 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 Inclined-flow centrifugal impeller.
Background technique
Inclined-flow centrifugal impeller is product conventional in field of ventilation equipment, 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.Very reasonably Inclined-flow centrifugal 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 Inclined-flow centrifugal impeller, disclosing a kind of novel structure, the large and Inclined-flow centrifugal impeller that noise is low of air quantity.
In order to realize above-mentioned object, present invention employs following technological scheme:
Inclined-flow centrifugal 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, the outer ledge of baffle liner is provided with the flange be connected as a single entity with it, and 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, and wheel hub is provided with multiple radiation hole; Described blade is 7, 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, 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 inlet angle and lower air intake angle angle are all not more than 10 °, upper air-out angle and lower air-out angle are all between 20 °-40 °, 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 °-15 °; 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 70%-74% 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 65%-72% 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, and the height of blade outboard end is the 93%-97% of blade medial extremity height, and the height of blade outboard end is the 86%-89% of blade apex height; Air-admitting surface between arbitrary neighborhood blade is the 73%-77% of corresponding exhaust outlet area; In described ring leaf base plate, circular diameter is the 48%-53% of outside diameter.
As preferably, the air-admitting surface between arbitrary neighborhood blade is the 75.%-75.5% of corresponding exhaust outlet area, obtains best static pressure, and efficiency improves 4%; The length of material-saving die cavity is the 55%-62% of length of blade, and hub height is the 63%-67% of impeller side height, and described impeller side height is the whole height of ring leaf base plate, blade and baffle liner; The height of described baffle liner is the 84%-89% of baffle liner width, and the height of baffle liner is the 45%-49% of blade exhaust outlet height; Guide face on baffle liner is curved, and its radius of the radian value is at 45mm-55mm; The height of flange is the 55%-60% of baffle liner height.Adopt above-mentioned preference data at least increase by 2% air quantity and noise rise not obvious.
As preferably, in blade, circular diameter is 327.7mm, blade outside diameter is 451.6mm, the thickness size of blade is no more than 15mm, vane tip length is 156.7mm, and length of blade is 156.7mm, the height 114.3mm of blade outboard end, the height of blade medial extremity is 119.4mm, and the bottom of blade outboard end is concordant with ring leaf plate outer side limit; Connection area length is 107mm, and the height of the tie point in connection area and disconnected district is 132.4mm; The length of material-saving die cavity is 93.3mm, and the widest position of material-saving die cavity is 7.3mm; In ring leaf base plate, circular diameter is 234.5mm, and ring leaf base plate outside diameter is 451.6mm, and hub height is 110.3mm, and impeller side height is 169.5mm; The height of baffle liner is 54.6mm, and the width of baffle liner is 62.9mm, and the height of blade exhaust outlet is 114.3mm; The height of flange is 31.9mm; Described radiation hole is five, the arrangement of five equidistant rules of radiation hole.Utilization efficiency is best, and air quantity is maximum and noise is minimum.
As preferably, upper air inlet angle is air intake surface top end with the angle of the contrary tangent direction in vane rotary direction 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 in vane rotary direction 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 in vane rotary direction 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 in vane rotary direction and blade outlet air surface bottom circular arc tangential line, upper air inlet angle is 3.2 °, lower air intake angle is 3.4 °, upper air-out angle is 23.2 °, lower air-out angle is 35 °, the effect reducing noise is best.
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, blade outboard air-out end face is arranged with multiple sawtooth.
Have employed the Inclined-flow centrifugal impeller of above-mentioned technological scheme, blade is 7, 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 are all between 20 °-40 °, 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 °-15 °, and 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 65%-72% of vane tip length, can ensure the bulk strength of impeller, can promote air quantity again.The height of blade outboard end is the 93%-97% of blade medial extremity height, and the height of blade outboard end is the 86%-89% of blade apex height, and air inlet/outlet change is mild, at least increases by the air quantity of 1%.Air-admitting surface between arbitrary neighborhood blade is the 73%-77% 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 is novel structure, and air quantity is large and noise is low.
Accompanying drawing explanation
Fig. 1: the Inclined-flow centrifugal impeller structural representation of the embodiment of the present invention.
Fig. 2: the schematic diagram of the Inclined-flow centrifugal impeller bottom surface of the embodiment of the present invention.
Fig. 3: the Inclined-flow centrifugal impeller side schematic view not installing baffle liner in the embodiment of the present invention.
Fig. 4: the Inclined-flow centrifugal impeller plan view one not installing baffle liner in the embodiment of the present invention.
Fig. 5: the Inclined-flow centrifugal impeller plan view two 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 embodiment of invention is made a detailed explanation.
As Fig. 1, Fig. 2, Fig. 3, Inclined-flow centrifugal impeller shown in Fig. 4 and Fig. 5, 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, the outer ledge of baffle liner 4 is provided with the flange 41 be connected as a single entity with it, 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 center at wheel hub 2 top is provided with the cylindrical plastic shaft hole sleeve 5 be connected as a single entity with it, shaft hole sleeve 5 there is the axis hole for connecting motor shaft, during use, motor shaft rotates through the axis hole impeller on shaft hole sleeve 5.Wheel hub 2 is provided with the arrangement of five radiation holes, 21, five radiation holes 21 equidistant rule centered by shaft hole sleeve 5.
Blade 3 is 7, 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, 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, upper air inlet angle a1 and lower air intake angle a2 angle are all not more than 10 °, upper air-out angle b1 and lower air-out angle b2 is all between 20 °-40 °, 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 b2 angle is between 5 °-15 °.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.Upper air inlet angle a1 is air intake surface top end with the angle of the contrary tangent direction in vane rotary direction and blade air intake surface top circular arc tangential line, lower air intake angle a2 is air intake surface bottom end with the angle of the contrary tangent direction in vane rotary direction 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 in vane rotary direction 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 in vane rotary direction and blade outlet air surface bottom circular arc tangential line.
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, and in blade, diameter of a circle is the outer diameter of a circle 70%-74% of blade, and the outer diameter of a circle of blade is between 420mm-480mm.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, connection area 33 length accounts for the 65%-72% 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, the tie point in connection area 33 and disconnected district 34 is highest point and the summit of blade 3, the height of blade outboard end is the 93%-97% of blade medial extremity height, the height of blade outboard end is the 86%-89% of blade apex height, at least increase by the incoming air area of 2%, namely at least increase by the air quantity of 2%.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.Air-admitting surface between arbitrary neighborhood blade 3 is the 73%-77% of corresponding exhaust outlet area, and the air-admitting surface between arbitrary neighborhood blade 3 is the 75.%-75.5% of corresponding exhaust outlet area, can obtain best static pressure, air intake efficiency at least improves 4%.In ring leaf base plate 1, circular diameter is the 48%-53% of outside diameter.
Air-out end face is arranged with multiple sawtooth 31 outside blade 3.Connection area 33 place is provided with stiffener, and baffle liner 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 length of material-saving die cavity 32 is 55%-62% of blade 3 length, and wheel hub 2 height is the 63%-67% 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 height of baffle liner 4 is 84%-89% of baffle liner 4 width, and the height of baffle liner 4 is 45%-49% of blade exhaust outlet height, and the guide face on baffle liner 4 is curved, and its radius of the radian value is at 45mm-55mm.The height of flange 41 is 55%-60% of baffle liner 4 height.Adopt above-mentioned preference data at least increase by 2% air quantity and noise rise not obvious.
The parameter of the best of above-mentioned Inclined-flow centrifugal impeller is as follows, and upper air inlet angle a1 is 3.2 °, and lower air intake angle a2 is 3.4 °, and upper air-out angle b1 is 23.2 °, and lower air-out angle b2 is 35 °.In blade, circular diameter is 327.7mm, blade outside diameter is 451.6mm, the thickness size of blade 3 is no more than 15mm, blade 3 top length is 156.7mm, blade 3 length is 156.7mm, the height 114.3mm of blade 3 outboard end, the height of blade 3 medial extremity is 119.4mm, the bottom of blade 3 outboard end is concordant with ring leaf base plate 1 outer side. and connection area 33 length is 107mm, the height of the tie point in connection area 33 and disconnected district 34 is 132.4mm, the length of material-saving die cavity 32 is 93.3mm, and the widest position of material-saving die cavity 32 is 7.3mm.In ring leaf base plate 1, circular diameter is 234.5mm, ring leaf base plate 1 outside diameter is 451.6mm, wheel hub 2 height is 110.3mm, impeller side height is 169.5mm, the height of baffle liner 4 is 54.6mm, the width of baffle liner 4 is 62.9mm, and the height of blade exhaust outlet is 114.3mm, and the height of flange 41 is 31.9mm.
Adopt the Inclined-flow centrifugal impeller of said structure and parameter, noise is effectively reduced under the prerequisite that air quantity increases, its air quantity of Inclined-flow centrifugal impeller that Dimensions is similar be in the market generally 2200 cubic metres per hour, noise is generally 49 decibels, adopt its air quantity of Inclined-flow centrifugal impeller 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. Inclined-flow centrifugal 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, the outer ledge of baffle liner is provided with the flange be connected as a single entity with it, and 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, and wheel hub is provided with multiple radiation hole; It is characterized in that described blade is 7, 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, 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 inlet angle and lower air intake angle angle are all not more than 10 °, upper air-out angle and lower air-out angle are all between 20 °-40 °, 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 °-15 °; 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%-74% of the outer diameter of a circle 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 65%-72% 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, and the height of blade outboard end is the 93%-97% of blade medial extremity height, and the height of blade outboard end is the 86%-89% of blade apex height; Air-admitting surface between arbitrary neighborhood blade is the 73%-77% of corresponding exhaust outlet area; In described ring leaf base plate, circular diameter is the 48%-53% of outside diameter; Upper air inlet angle is air intake surface top end with the angle of the contrary tangent direction in vane rotary direction 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 in vane rotary direction 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 in vane rotary direction 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 in vane rotary direction and blade outlet air surface bottom circular arc tangential line.
2. Inclined-flow centrifugal impeller according to claim 1, the air-admitting surface that it is characterized in that between arbitrary neighborhood blade is the 75%-75.5% of corresponding exhaust outlet area; The length of material-saving die cavity is the 55%-62% of length of blade, and hub height is the 63%-67% of impeller side height, and described impeller side height is the whole height of ring leaf base plate, blade and baffle liner; The height of described baffle liner is the 84%-89% of baffle liner width, and the height of baffle liner is the 45%-49% of blade exhaust outlet height; Guide face on baffle liner is curved, and its radius of the radian value is at 45mm-55mm; The height of flange is the 55%-60% of baffle liner height.
3. Inclined-flow centrifugal impeller according to claim 2, it is characterized in that in blade, circular diameter is 327.7mm, blade outside diameter is 451.6mm, the thickness size of blade is no more than 15mm, vane tip length is 156.7mm, and length of blade is 156.7mm, the height 114.3mm of blade outboard end, the height of blade medial extremity is 119.4mm, and the bottom of blade outboard end is concordant with ring leaf plate outer side limit; Connection area length is 107mm, and the height of the tie point in connection area and disconnected district is 132.4mm; The length of material-saving die cavity is 93.3mm, and the widest position of material-saving die cavity is 7.3mm; In ring leaf base plate, circular diameter is 234.5mm, and ring leaf base plate outside diameter is 451.6mm, and hub height is 110.3mm, and impeller side height is 169.5mm; The height of baffle liner is 54.6mm, and the width of baffle liner is 62.9mm, and the height of blade exhaust outlet is 114.3mm; The height of flange is 31.9mm; Described radiation hole is five, the arrangement of five equidistant rules of radiation hole.
4. Inclined-flow centrifugal impeller according to claim 1, it is characterized in that described stiffener is projection, described auxiliary reinforcing element is groove.
5. Inclined-flow centrifugal impeller according to claim 1, it is characterized in that described stiffener is groove, described auxiliary reinforcing element is projection.
6. Inclined-flow centrifugal impeller according to claim 1, is characterized in that blade outboard air-out end face is arranged with multiple sawtooth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310114124.8A CN103195754B (en) | 2013-04-03 | 2013-04-03 | Inclined-flow centrifugal impeller |
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| CN201310114124.8A CN103195754B (en) | 2013-04-03 | 2013-04-03 | Inclined-flow centrifugal impeller |
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| CN103195754A CN103195754A (en) | 2013-07-10 |
| CN103195754B true CN103195754B (en) | 2015-11-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162961B (en) * | 2014-05-14 | 2020-06-16 | 珠海格力电器股份有限公司 | Centrifugal fan blade |
| CN106979163A (en) * | 2016-01-15 | 2017-07-25 | 台湾樱花股份有限公司 | Smoke exhaust ventilator low-noise fan structure |
| CN110360150B (en) * | 2019-07-08 | 2020-08-21 | 珠海格力电器股份有限公司 | Wind wheel, centrifugal fan and air conditioner indoor unit |
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| CN203175980U (en) * | 2013-04-03 | 2013-09-04 | 宁波朗迪叶轮机械有限公司 | Oblique-flow centrifugal vane wheel |
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2013
- 2013-04-03 CN CN201310114124.8A patent/CN103195754B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001271791A (en) * | 2000-03-27 | 2001-10-05 | Matsushita Seiko Co Ltd | Multiblade fan |
| JP2007170331A (en) * | 2005-12-26 | 2007-07-05 | Daikin Ind Ltd | Turbofan and indoor unit of air conditioner using it |
| JP2010133254A (en) * | 2008-12-02 | 2010-06-17 | Daikin Ind Ltd | Centrifugal blower, and air conditioner provided with the same |
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Effective date of registration: 20151014 Address after: 430090 Hubei province Wuhan Hannan Shamao Street happiness Industrial Park Applicant after: WUHAN LANGDI IMPELLER MACHINERY CO., LTD. Address before: 315412 Zhejiang city of Ningbo province Yuyao Langxia Yuyao industrial park by 20 Road No. 188 Applicant before: Ningbo Langdi Impeller Machinery Co., Ltd. |
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