CN103195754A - Inclined-flow centrifugal impeller - Google Patents
Inclined-flow centrifugal impeller Download PDFInfo
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- CN103195754A CN103195754A CN2013101141248A CN201310114124A CN103195754A CN 103195754 A CN103195754 A CN 103195754A CN 2013101141248 A CN2013101141248 A CN 2013101141248A CN 201310114124 A CN201310114124 A CN 201310114124A CN 103195754 A CN103195754 A CN 103195754A
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Abstract
The invention relates to the field of ventilation devices, in particular to an inclined-flow centrifugal impeller. The centrifugal impeller comprises an annular impeller base plate, a hub, seven blades and a flow guide ring. Flanges connected integrally with the flow guide ring are arranged at the outer edge, portions from air inlet ends to air outlet ends of the blades are twisted, upper air inlet angles and lower air inlet angles are not larger than 10 degrees, and upper air outlet angles and lower air outlet angles are in a range between 20 degrees and 40 degrees; upper portions of the blades are formed by connection of areas and non-connection areas, and the lengths of the connection areas occupy 65% to 72% of the lengths of the tops of the blades; and the air inlet area between the adjacent blades is 73% to 77% of the corresponding air outlet area. The inclined-flow centrifugal impeller has the advantages of being novel in structure, large in air quantity and low in noise.
Description
Technical field
The present invention relates to the ventilation equipment field, relate in particular to a kind of oblique flow centrifugal impeller.
Background technique
The oblique flow centrifugal impeller is product commonly used in the ventilation equipment field, the oblique flow centrifugal impeller comprises ring leaf base plate, wheel hub, blade and baffle liner, vanes fixed is between ring leaf base plate and baffle liner, wheel hub and ring leaf base plate inboard are connected as a single entity, wheel hub is concentric with ring leaf base plate, the center at wheel hub top arranges axle sleeve, and motor shaft passes the rotation of axle sleeve upper shaft hole impeller during use.The usability of oblique flow centrifugal impeller is mainly reflected in air quantity size and noise control aspect, air quantity size and noise just are mutual, the general big noise of air quantity is relatively just high, the little noise of air quantity is low naturally, the parameter that the usability of oblique flow centrifugal impeller relates to is a lot, for example the shape of leaf base plate, wheel hub, blade and baffle liner, size and Placement etc.Very reasonably the oblique flow centrifugal impeller is few in air quantity size and noise control in the market.
Summary of the invention
The objective of the invention is to disclose a kind of novel structure in order to enrich the kind of oblique flow centrifugal impeller, the oblique flow centrifugal impeller that air quantity is big and noise is low.
In order to realize above-mentioned purpose, the present invention has adopted following technological scheme:
The oblique flow centrifugal impeller, comprise ring leaf base plate, wheel hub, blade and baffle liner, vanes fixed is between ring leaf base plate and baffle liner, the material-saving die cavity is set in the blade, the outer ledge of baffle liner is provided with the flange that is connected as a single entity with it, and wheel hub and ring leaf base plate inboard are connected as a single entity, and wheel hub is concentric with ring leaf base plate, the top of wheel hub is provided with the cylindrical plastic shaft hole sleeve that is connected as a single entity with it, and wheel hub is provided with a plurality of radiation holes; Described blade is 7, blade air intake to outlet air end is distorted shape, the air intake angle of blade is divided into the following air intake angle near the last air intake angle of baffle liner and close ring leaf base plate, the air-out angle of blade is divided into the following air-out angle near the last air-out angle of baffle liner and close ring leaf base plate, last air intake angle and following air intake angle angle all are not more than 10 °, last air-out angle and following air-out angle are all between 20 °-40 °, last air-out angle angle is less than following air-out angle angle, and the difference between last air-out angle angle and the following air-out angle angle is between 5 °-15 °; All the inner and outer ends that are arranged in the blade on the ring leaf base plate form circle and blade cylindrical in the blade respectively, and diameter of a circle is the diameter 70%-74% of blade cylindrical in the blade, and the diameter of blade cylindrical is between 420mm-480mm; Blade top is made of the connection area that is 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 of blade inboard, and the connection area is in the outside in disconnected district, and connection area length accounts for the 65%-72% of vane tip length; The place, connection area is provided with stiffener, and baffle liner is provided with the auxiliary stiffener with stiffener position and structure matching; The tie point in connection area and disconnected district is that the highest point of blade is the summit, 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 the adjacent blades is the 73%-77% of the exhaust outlet area of correspondence arbitrarily; Circular diameter is the 48%-53% of outside diameter in the described ring leaf base plate.
As preferably, the air-admitting surface between the adjacent blades is the 75.%-75.5% of corresponding exhaust outlet area arbitrarily, obtains best static pressure, and efficient 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 sidepiece height, and described impeller sidepiece 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 the 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 to increase by 2% air quantity at least and noise rises not obvious.
As preferably, circular diameter is 327.7mm in the blade, the 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; Circular diameter is 234.5mm in the ring leaf base plate, and ring leaf base plate outside diameter is 451.6mm, and hub height is 110.3mm, and impeller sidepiece 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 maximum and noise are minimum.
As preferably, last air intake angle is the air intake surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface top circular arc tangential line, following air intake angle is air intake surface bottom place with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface bottom circular arc tangential line, last air-out angle is the outlet air surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface top circular arc tangential line, following air-out angle is outlet air surface bottom place with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface bottom circular arc tangential line, last air intake angle is 3.2 °, following air intake angle is 3.4 °, last air-out angle is 23.2 °, following air-out angle is 35 °, and the effect that reduces noise is best.
As preferably, stiffener is projection, and described auxiliary stiffener is groove.
As preferably, stiffener is groove, and described auxiliary stiffener is projection.
As preferably, be arranged with a plurality of sawtooth on the blade outside air-out end face.
Adopted the oblique flow centrifugal impeller of above-mentioned technological scheme, blade is 7, last air intake angle and following air intake angle angle all are not more than 10 °, last air-out angle and following air-out angle are all between 20 °-40 °, last air-out angle angle is less than following air-out angle angle, and the difference between last air-out angle angle and the following air-out angle angle makes the air-out of blade be linear change along the blade height direction between 5 °-15 °, can effectively weaken the noise energy stack, reduce noise.Disconnected district is in the air intake direction of blade inboard, increases incoming air area, and air quantity increases.Connection area length accounts for the 65%-72% of vane tip length, can guarantee 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 turnover wind changes mild, increases by 1% air quantity at least.Air-admitting surface between the adjacent blades is the 73%-77% of the exhaust outlet area of correspondence arbitrarily, obtains good static pressure, and air intake efficiency improves 2% at least.The advantage of this oblique flow centrifugal impeller is novel structure, and air quantity is big and noise is low.
Description of drawings
Fig. 1: the oblique flow centrifugal impeller structural representation of the embodiment of the invention.
Fig. 2: the schematic representation of the oblique flow centrifugal impeller bottom surface of the embodiment of the invention.
Fig. 3: the oblique flow centrifugal impeller side schematic view that baffle liner is not installed in the embodiment of the invention.
Fig. 4: the oblique flow centrifugal impeller plan view one that baffle liner is not installed in the embodiment of the invention.
Fig. 5: the oblique flow centrifugal impeller plan view two that baffle liner is not installed in the embodiment of the 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, Fig. 4 and oblique flow centrifugal impeller shown in Figure 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 the baffle liner 4, material-saving die cavity 32 is set in the blade 3, the outer ledge of baffle liner 4 is provided with the flange 41 that is connected as a single entity with it, wheel hub 2 is connected as a single entity with ring leaf base plate 1 inboard, wheel hub 2 is concentric with ring leaf base plate 1, the center at wheel hub 2 tops is provided with the cylindrical plastic shaft hole sleeve 5 that is connected as a single entity with it, be useful on the axis hole that connects motor shaft on the shaft hole sleeve 5, the axis hole impeller that motor shaft passes on the shaft hole sleeve 5 during use is rotated.Wheel hub 2 is provided with the arrangement of 21, five radiation holes 21 of five radiation holes equidistant rule centered by shaft hole sleeve 5.
All the inner and outer ends that are arranged in the blade on the ring leaf base plate 1 form circle and blade cylindrical in the blade respectively, and diameter of a circle is the diameter 70%-74% of blade cylindrical in the blade, and the diameter of blade cylindrical is between 420mm-480mm.Blade 3 tops are made of the connection area 33 that is connected as a single entity and disconnected district 34, the connection area 33 of blade and baffle liner 4 are fixed by ultrasonic welding, disconnected district 34 is in the air intake direction of blade 3 inboards, connection area 33 is in the outside in disconnected district 34, connection area 33 length account for the 65%-72% of blade 3 top length, can guarantee the intensity that is connected of blade 3 and baffle liner 4, lifting air quantity that again can be suitable, the tie point in connection area 33 and disconnected district 34 is that the highest point of blade 3 is the summit, 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 2% incoming air area, namely increase by 2% air quantity at least.33 places, connection area are provided with stiffener, and baffle liner 4 is provided with the auxiliary stiffener with stiffener position and structure matching.Air-admitting surface between the adjacent blades 3 is the 73%-77% of the exhaust outlet area of correspondence arbitrarily, and the air-admitting surface between the adjacent blades 3 is the 75.%-75.5% of the exhaust outlet area of correspondence arbitrarily, can obtain best static pressure, air intake efficiency improves 4% at least.Circular diameter is the 48%-53% of outside diameter in the ring leaf base plate 1.
Be arranged with a plurality of sawtooth 31 on blade 3 outside air-out end faces.33 places, connection area are provided with stiffener, and baffle liner is provided with the auxiliary stiffener with stiffener position and structure matching, and stiffener is projection, auxiliary stiffener is the groove that mates with projection, in like manner, stiffener also can be groove, and auxiliary stiffener is the projection that mates with groove.
The length of material-saving die cavity 32 is 55%-62% of blade 3 length, and wheel hub 2 highly is the 63%-67% of impeller sidepiece height, and impeller sidepiece height is the whole height after ring leaf base plate 1, blade 3 and baffle liner 4 assemblings are finished.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 the 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 to increase by 2% air quantity at least and noise rises not obvious.
The parameter of the best of above-mentioned oblique flow centrifugal impeller is as follows, and last air intake angle a1 is 3.2 °, and following air intake angle a2 is 3.4 °, and last air-out angle b1 is 23.2 °, and following air-out angle b2 is 35 °.Circular diameter is 327.7mm in the blade, the blade outside diameter is 451.6mm, the thickness size of blade 3 is no more than 15mm, blade 3 top length are 156.7mm, blade 3 length are 156.7mm, the height 114.3mm of blade 3 outboard ends, the height of blade 3 medial extremitys is 119.4mm, the bottom of blade 3 outboard ends is concordant with ring leaf base plate 1 outer side. and connection area 33 length are 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.Circular diameter is 234.5mm in the ring leaf base plate 1, ring leaf base plate 1 outside diameter is 451.6mm, wheel hub 2 highly is 110.3mm, impeller sidepiece 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 oblique flow centrifugal impeller of said structure and parameter, under the prerequisite that air quantity increases, effectively reduced noise, in the market similar its air quantity of oblique flow centrifugal impeller of Dimensions generally be 2200 cubic metres per hour, noise generally is 49 decibels, its air quantity of oblique flow centrifugal impeller that adopts above-mentioned parameter be 2300 cubic metres per hour, noise is 43 decibels, and namely air quantity is big and noise is low.
Claims (7)
1. oblique flow centrifugal impeller, comprise ring leaf base plate, wheel hub, blade and baffle liner, vanes fixed is between ring leaf base plate and baffle liner, the material-saving die cavity is set in the blade, the outer ledge of baffle liner is provided with the flange that is connected as a single entity with it, and wheel hub and ring leaf base plate inboard are connected as a single entity, and wheel hub is concentric with ring leaf base plate, the top of wheel hub is provided with the cylindrical plastic shaft hole sleeve that is connected as a single entity with it, and wheel hub is provided with a plurality of radiation holes; 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 following air intake angle near the last air intake angle of baffle liner and close ring leaf base plate, the air-out angle of blade is divided into the following air-out angle near the last air-out angle of baffle liner and close ring leaf base plate, last air intake angle and following air intake angle angle all are not more than 10 °, last air-out angle and following air-out angle are all between 20 °-40 °, last air-out angle angle is less than following air-out angle angle, and the difference between last air-out angle angle and the following air-out angle angle is between 5 °-15 °; All the inner and outer ends that are arranged in the blade on the ring leaf base plate form circle and blade cylindrical in the blade respectively, and diameter of a circle is the diameter 70%-74% of blade cylindrical in the blade, and the diameter of blade cylindrical is between 420mm-480mm; Blade top is made of the connection area that is 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 of blade inboard, and the connection area is in the outside in disconnected district, and connection area length accounts for the 65%-72% of vane tip length; The place, connection area is provided with stiffener, and baffle liner is provided with the auxiliary stiffener with stiffener position and structure matching; The tie point in connection area and disconnected district is that the highest point of blade is the summit, 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 the adjacent blades is the 73%-77% of the exhaust outlet area of correspondence arbitrarily; Circular diameter is the 48%-53% of outside diameter in the described ring leaf base plate.
2. oblique flow centrifugal impeller according to claim 1 is characterized in that the air-admitting surface between any adjacent blades is the 75.%-75.5% of the exhaust outlet area of correspondence; The length of material-saving die cavity is the 55%-62% of length of blade, and hub height is the 63%-67% of impeller sidepiece height, and described impeller sidepiece 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 the 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. oblique flow centrifugal impeller according to claim 2, it is characterized in that circular diameter is 327.7mm in the blade, the 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; Circular diameter is 234.5mm in the ring leaf base plate, and ring leaf base plate outside diameter is 451.6mm, and hub height is 110.3mm, and impeller sidepiece 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. oblique flow centrifugal impeller according to claim 1, it is characterized in that the air intake angle is the air intake surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface top circular arc tangential line, following air intake angle is air intake surface bottom place with the opposite tangent direction of fan blade sense of rotation and the angle of blade air intake surface bottom circular arc tangential line, last air-out angle is the outlet air surface top end with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface top circular arc tangential line, following air-out angle is outlet air surface bottom place with the opposite tangent direction of fan blade sense of rotation and the angle of blade outlet air surface bottom circular arc tangential line, last air intake angle is 3.2 °, following air intake angle is 3.4 °, last air-out angle is 23.2 °, and following air-out angle is 35 °.
5. oblique flow centrifugal impeller according to claim 1 is characterized in that described stiffener is projection, and described auxiliary stiffener is groove.
6. oblique flow centrifugal impeller according to claim 1 is characterized in that described stiffener is groove, and described auxiliary stiffener is projection.
7. oblique flow centrifugal impeller according to claim 1 is characterized in that being arranged with a plurality of sawtooth on the blade outside air-out end face.
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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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| CN103195754B CN103195754B (en) | 2015-11-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967838A (en) * | 2014-05-14 | 2014-08-06 | 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 |
| CN110360150A (en) * | 2019-07-08 | 2019-10-22 | 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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| CN202768480U (en) * | 2012-09-06 | 2013-03-06 | 宁波朗迪叶轮机械有限公司 | Oblique flow fan blade |
| CN202833296U (en) * | 2012-10-09 | 2013-03-27 | 宁波朗迪叶轮机械有限公司 | Oblique flow centrifuge blade |
| 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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| 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 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967838A (en) * | 2014-05-14 | 2014-08-06 | 珠海格力电器股份有限公司 | Centrifugal fan blade |
| CN103967838B (en) * | 2014-05-14 | 2019-03-19 | 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 |
| CN110360150A (en) * | 2019-07-08 | 2019-10-22 | 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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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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