CN101832294A - Inclined through-flow metal fan blade, and manufacturing equipment and method thereof - Google Patents
Inclined through-flow metal fan blade, and manufacturing equipment and method thereof Download PDFInfo
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- CN101832294A CN101832294A CN 201010188552 CN201010188552A CN101832294A CN 101832294 A CN101832294 A CN 101832294A CN 201010188552 CN201010188552 CN 201010188552 CN 201010188552 A CN201010188552 A CN 201010188552A CN 101832294 A CN101832294 A CN 101832294A
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Abstract
The invention relates to a inclined through-flow metal fan blade, manufacturing equipment thereof and a manufacturing method thereof, which relate to the field of heating and ventilating equipment and overcome the defects that in the conventional air conditioning equipment, the impeller makes higher noise, is susceptible to abrasion and is poor in deformation resistance. The invention provides the inclined through-flow metal fan blade with low noise, insusceptibility to abrasion and high deformation resistance. The inclined through-flow metal fan blade comprises fixed disks, blades, basic holes and blade fixing slotted holes, wherein the fixed disks are round and are arranged in equal distance; the number of the fixed disks is 4; each basic hole is formed in the center of each fixed disk and is a through hole with key slots divided into six equal parts; the blade fixing slotted holes are arc-shaped slotted holes which are chamfered along the circumferential direction of the edges of the fixed disks; the number of the blade fixing slotted holes is 25; each blade is a rectangular strip-shaped body, of which the section has radian; the blades are arranged in the blade fixing slotted holes; all the fixed disks are connected with one another; and each blade is inclined along the axle center direction of each fixed disks by an angle of 24 degrees. The inclined through-flow metal fan blade, the manufacturing equipment thereof and the manufacturing method thereof are simple in structure and reasonable in design and are suitable for popularization and application.
Description
Technical field
The present invention relates to the heating and ventilating equipment field, what be specifically related to is a kind of inclined through-flow metal fan blade leaf, its manufacturing equipment and method.
Background technique
Along with the development of society and the raising day by day of people's living standard, air-conditioning, warm-air drier, changes in temperature wind devices such as air curtain progressively enter into people's family and office and public place, the through-flow impeller is at air-conditioning, warm-air drier, a vitals in the warm braw equipment such as air curtain, the effect that the air ventilation that having played to have the temperature difference is got up, traditional changes in temperature wind devices can send very big noise when moving, wherein impeller is important noise source, therefore reducing the impeller operation noise is the critical path that reduces this class heating and ventilating equipment, and traditional plastic impeller ratio is easier to wear and tear, ability of anti-deformation is also relatively poor, equipment is damaged after using a period of time easily
Summary of the invention
Bigger in order to overcome the noise that impeller sends in the existing changes in temperature wind devices, wear and tear than being easier to, the deficiency that ability of anti-deformation is also relatively poor, the objective of the invention is to: provide a kind of noise less, the difficult wearing and tearing, the inclined through-flow metal fan blade that ability of anti-deformation is stronger, and its processing method is provided.
The technical solution adopted for the present invention to solve the technical problems is as follows: a kind of inclined through-flow metal fan blade, be installed in the inside of HVAC metalloid cross flow fan of the prior art, and comprise fixed tray, blade, datum hole, vanes fixed slotted eye; Described fixed tray is the circular discoid body, equidistant arrangement, and datum hole is positioned at fixed tray central authorities, and the vanes fixed slotted eye is the arc-shaped slot along the oblique incision of fixed tray edge circumferencial direction, preferred crescent shape slotted eye; Blade is the rectangular strip body that the cross section has radian, is installed in the vanes fixed slotted eye, and all fixed trays are linked together; Described fixed tray has datum hole, and fixed tray quantity is 3-8, and described datum hole has six branch keyways of arranging by circumference in equal parts, and blade quantity is relative with vanes fixed slotted eye quantity to should be 16-48, and blade and fixed tray axis direction are 15-45 ° of inclination.
Described fixed tray quantity is 4, and described vanes fixed slotted eye quantity is 25.
Described blade and fixed tray axis direction are 24 ° of inclinations.
The making of inclined through-flow metal fan blade realizes on the inclined through-flow metal fan blade rolling riveter, the inclined through-flow metal fan blade rolling riveter comprises the roll riveting mandrel, rolling wheel, the rolling wheel fixed glides, guide rail, described roll riveting mandrel main body is an axostylus axostyle, also comprise twisted flat bar, the cross section of twisted flat bar is a rectangular, twisted flat bar comprises the upper and lower, twisted flat bar top is that three of axostylus axostyle side wait the branch taper key, this five equilibrium taper key by roll riveting mandrel axostylus axostyle top in the shape of a spiral shape extend to the bottom, the rolling wheel fixed glides is the tabular body of the rectangular of two parallel placements, guide rail is two parallel strip shape bodies, two rolling wheel fixed glides front-end and back-end two rolling wheel fixed glides are linked together respectively, on two rolling wheel fixed glides inner side edges, the rolling wheel that equates with the fixed tray quantity of the inclined through-flow metal fan blade that needs to make is arranged respectively.
The diameter in the diameter of described roll riveting mandrel and fixed tray central reference hole is complementary, and the shape of the taper key of described roll riveting mandrel and fixed tray six five equilibrium keyways is complementary, and the taper key of roll riveting mandrel and fixed tray six five equilibrium keyways are socket connection.
Described roll riveting mandrel also comprises helical spline, the twisted flat bar bottom in helical spline, with helical spline be drive fit.
Make the method for inclined through-flow metal fan blade, concrete making step is as follows:
(1) 4 fixed trays are stacked, 25 blades are inserted vanes fixed dish slotted eye then in turn, fixed tray is spaced along bore bus bars, form the roll riveting blank;
(2) the roll riveting mandrel that makes is inserted the through hole at fixed tray center;
(3) the roll riveting mandrel rotates, and adjusts fixed tray to the rolling wheel center, and two relative rolling wheels make the homogeneous deformation of fixed tray pressurized do relative movement and synchronously with blade riveting jail under the rolling wheel fixed glides drives.
The method of described making roll riveting mandrel is as follows:
(1) the mandrel material is selected 40Cr for use, through rough turn; Modified; Finish turning; Peripheral milling is made.
(2) mandrel one end is clipped on the general-purpose milling machine dividing head; The other end is firm with top top; Select for use the lead of screw change gear of design appointment to mill helical spline, its degree of depth should be greater than 3mm; The rotation dividing head mills two helical splines in addition successively.
(3) select for use and the friction tight band steel of mandrel keyway,, be pressed in the mandrel helical spline through plain grinding processing.
Compared with prior art, the invention has the beneficial effects as follows:
1. the metal axial-flow impeller is selected dihedral vane for use, owing to change the angle and the opportunity of air incision blade,, produce not quite identical pressure pulsation in the axial direction with the effect of wind wheel, suppress to produce big higher harmonics composition, reduce noise 1-2 decibel thereby can reach with wind wheel.Through the repetition test blade 24 ° of best results that tilt along the circumferential direction.
2. present technique has been used the plastics fixed tray of metal fixed tray replacement legacy equipment, the difficult wearing and tearing.
3. present technique uses blade that all fixed trays are cascaded, and has datum hole to guarantee the position of fixed tray, makes whole impeller more fixing, is difficult for taking place deformation.
4. the oblique through-flow impeller of metal is an innovation of this technical field, and its making method also is a blank, and the present invention provides out with the processing method of the oblique through-flow impeller of metal.
5 impellers are made up of blade and fixed tray, and tiltedly the through-flow impeller is still selected straight through-flow impeller part for use, has deducted the trouble of making parts peculiar again like this; Owing to designed three five equilibrium taper keies on the roll riveting mandrel, impeller inserts roll riveting mandrel rear blade and drives the lower edge taper key at fixed tray and formed a gradient with roll riveting mandrel center bus naturally, and its gradient is fixed in rolling wheel roll riveting process, forms oblique impeller.The key components and parts of making the oblique impeller unit of metal is the roll riveting mandrel, and its design and fabrication precision directly influences the quality of making oblique impeller, and roll riveting mandrel cylindrical is designed to join with fixed tray datum hole cunning, and fit quality is H7/S6.Make three five equilibrium spiral square keys of joining with fixed tray slotted eye cunning on roll riveting mandrel cylindrical, it plays the impeller rotation and forms oblique blade.By the oblique through-flow impeller of the metal validity height of method preparation of the present invention, performance is good.
Description of drawings
Fig. 1 is an overall structure schematic representation of the present invention;
Fig. 2 is a fixed tray structural representation of the present invention;
Fig. 3 is a roll riveting part schematic representation of the present invention;
Fig. 4 is a roll riveting mandrel schematic representation of the present invention;
Fig. 5 is a roll riveting mandrel sectional view of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples, but not as a limitation of the invention.
Shown in Fig. 1-5, a kind of inclined through-flow metal fan blade is installed in the inside of HVAC metalloid cross flow fan of the prior art, comprises fixed tray 1, blade 2, datum hole 3, vanes fixed slotted eye 4; Fixed tray 1 is the circular discoid body, quantity is 4, equidistant arrangement, datum hole 3 is positioned at fixed tray central authorities, and vanes fixed slotted eye 4 is the crescent shape slotted eye along the oblique incision of fixed tray edge circumferencial direction, quantity is 25, blade 2 is installed in the vanes fixed slotted eye 4 for the cross section has the rectangular strip body of radian, and all fixed trays 1 are linked together, described fixed tray 1 is the through hole with six five equilibrium keyways, and blade 2 is 24 ° of inclinations with fixed tray 1 axis direction.
The making method of inclined through-flow metal fan blade, the making of inclined through-flow metal fan blade realizes on the inclined through-flow metal fan blade rolling riveter, the inclined through-flow metal fan blade rolling riveter is a home-built equipment, it comprises roll riveting mandrel 5, rolling wheel 6, rolling wheel fixed glides 7, guide rail 8, described roll riveting mandrel 5 main bodys are axostylus axostyle, also comprise twisted flat bar 51, the cross section of twisted flat bar 51 is a rectangular, twisted flat bar 51 comprises the upper and lower, twisted flat bar 51 tops are that three of axostylus axostyle side wait the branch taper key, this five equilibrium taper key by roll riveting mandrel 5 tops in the shape of a spiral shape extend to the bottom, rolling wheel fixed glides 7 is the tabular body of rectangular of two parallel placements, guide rail 8 is two parallel strip shape bodies, two rolling wheel fixed glides 7 front-end and back-end two rolling wheel fixed glides 7 are linked together respectively, on two rolling wheel fixed glides 7 inner side edges, the rolling wheel 6 that equates with fixed tray 1 quantity of the inclined through-flow metal fan blade that needs to make is arranged respectively.
Concrete making step is:
(1) 4 fixed trays is stacked that 25 blades are inserted fixed tray slotted eye 4 in turn is spaced along bore bus bars with fixed tray 1 then, form the roll riveting blank;
(2) roll riveting mandrel 5 is inserted the through hole at fixed tray 1 center, at this moment, blade produces and twists, and blade 2 is 24 ° of inclinations with fixed tray 1 axis direction;
(3) roll riveting mandrel 5 rotates, and adjusts fixed tray 1 to rolling wheel 6 centers, and two relative rolling wheels 6 are done relative movement synchronously under rolling wheel fixed glides 7 drives, and makes fixed tray 1 pressurized homogeneous deformation and with blade 2 riveting jails.
Described roll riveting mandrel 5 also comprises helical spline 9, twisted flat bar 51 bottoms in helical spline 9, with helical spline 9 be drive fit.
The diameter in the diameter of described roll riveting mandrel 5 and fixed tray 1 central reference hole is complementary, and the shape of the taper key of described roll riveting mandrel 5 and fixed tray 1 six five equilibrium keyways is complementary, and the taper key of roll riveting mandrel 5 and fixed tray 1 six five equilibrium keyways are socket connection.
The method of described making roll riveting mandrel 5 is:
(1) the mandrel material is selected 40Cr for use, through rough turn; Modified; Finish turning; Peripheral milling is made;
(2) mandrel one end is clipped on the general-purpose milling machine dividing head; The other end is firm with top top; Select for use the lead of screw change gear of design appointment to mill helical spline, its degree of depth should be greater than 3mm; The rotation dividing head mills two helical splines in addition successively;
(3) select for use and the friction tight band steel of mandrel keyway,, be pressed in the mandrel helical spline through plain grinding processing.
Roll riveting mandrel keyway gradient computational methods:
(1) mandrel oblique angle=K * 24 °=1.5 * 24 °=36 °
K: correction factor
Because impeller compression chord during the roll riveting moulding on mandrel, when pressure stress cancellation impeller when mandrel takes off, pressure stress discharges impeller and produces the rebound leaf inclination angle and can reduce, so the mandrel inclination angle need be revised.Consider that this routine impeller diameter is bigger, K gets 1.5.
The metal axial-flow impeller is selected dihedral vane for use owing to change the angle and the opportunity of air incision blade, can reach the effect that reduces noise.Through repetition test, external diameter is a φ 110mm impeller, and length is blade best results when along the circumferential direction tilting 24%d when 700mm, the noise minimum, and performance is best.
(2) calculating of roll riveting mandrel lead of screw
700÷36°=T÷360°
T=700 * 360 ° ÷ 36 °=7000 T: helical pitch
Above-described embodiment, the present invention embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.
Claims (9)
1. inclined through-flow metal fan blade is installed in the inside of HVAC metalloid cross flow fan of the prior art, comprises fixed tray, blade, datum hole, vanes fixed slotted eye; Described fixed tray is the circular discoid body, equidistant arrangement, datum hole is positioned at fixed tray central authorities, the vanes fixed slotted eye is the arc-shaped slot along the oblique incision of fixed tray edge circumferencial direction, blade is the rectangular strip body that the cross section has radian, be installed in the vanes fixed slotted eye, all fixed trays are linked together, it is characterized in that: described fixed tray has datum hole, fixed tray quantity is 3-8, described datum hole has six branch keyways of arranging by circumference in equal parts, and blade quantity is relative with vanes fixed slotted eye quantity to should be 16-48, and blade and fixed tray axis direction are 15-45 ° of inclination.
2. inclined through-flow metal fan blade according to claim 1 is characterized in that: described fixed tray quantity is 4.
3. inclined through-flow metal fan blade according to claim 1 is characterized in that: described vanes fixed slotted eye quantity is 25, is shaped as the crescent shape arc.
4. inclined through-flow metal fan blade according to claim 1 is characterized in that: described blade and fixed tray axis direction are 24 ° of inclinations.
5. make the equipment of inclined through-flow metal fan blade as claimed in claim 1, it is characterized in that: the making of inclined through-flow metal fan blade realizes on the inclined through-flow metal fan blade rolling riveter, the inclined through-flow metal fan blade rolling riveter comprises the roll riveting mandrel, rolling wheel, the rolling wheel fixed glides, guide rail, described roll riveting mandrel main body is an axostylus axostyle, also comprise twisted flat bar, the cross section of twisted flat bar is a rectangular, twisted flat bar comprises the upper and lower, twisted flat bar top is three taper keies such as branch such as grade at the axostylus axostyle side, this five equilibrium taper key by roll riveting mandrel axostylus axostyle top in the shape of a spiral shape extend to the bottom, the rolling wheel fixed glides is the tabular body of the rectangular of two parallel placements, guide rail is two parallel strip shape bodies, two rolling wheel fixed glides front-end and back-end two rolling wheel fixed glides are linked together respectively, on two rolling wheel fixed glides inner side edges, the rolling wheel that equates with the fixed tray quantity of the inclined through-flow metal fan blade that needs to make is arranged respectively.
6. the equipment of the described making inclined through-flow metal fan blade of claim 5, it is characterized in that: the diameter in the diameter of described roll riveting mandrel and fixed tray central reference hole is complementary, the shape of the taper key of described roll riveting mandrel and fixed tray six five equilibrium keyways is complementary, and the taper key of roll riveting mandrel and fixed tray six five equilibrium keyways are socket connection.
7. the equipment of making inclined through-flow metal fan blade as claimed in claim 5 is characterized in that: described roll riveting mandrel also comprises helical spline, the twisted flat bar bottom in helical spline, with helical spline be drive fit.
8. make the method for inclined through-flow metal fan blade as claimed in claim 1, it is characterized in that: concrete making step is as follows:
(1) 4 fixed trays are stacked, 25 blades are inserted vanes fixed dish slotted eye then in turn, fixed tray is spaced along bore bus bars, form the roll riveting blank;
(2) the roll riveting mandrel that makes is inserted the through hole at fixed tray center;
(3) the roll riveting mandrel rotates, and adjusts fixed tray to the rolling wheel center, and two relative rolling wheels make the homogeneous deformation of fixed tray pressurized do relative movement and synchronously with blade riveting jail under the rolling wheel fixed glides drives.
9. the making method of inclined through-flow metal fan blade as claimed in claim 8 is characterized in that, the method for described making roll riveting mandrel is as follows:
(1) the mandrel material is selected 40Cr for use, through rough turn; Modified; Finish turning; Peripheral milling is made;
(2) mandrel one end is clipped on the general-purpose milling machine dividing head; The other end is firm with top top; Select for use the lead of screw change gear of design appointment to mill helical spline, its degree of depth should be greater than 3mm; The rotation dividing head mills two helical splines in addition successively;
(3) select for use and the friction tight band steel of mandrel keyway,, be pressed in the mandrel helical spline through plain grinding processing.
Priority Applications (1)
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CN 201010188552 CN101832294B (en) | 2010-05-21 | 2010-05-21 | Manufacturing method of inclined through-flow metal fan blade |
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CN 201010188552 CN101832294B (en) | 2010-05-21 | 2010-05-21 | Manufacturing method of inclined through-flow metal fan blade |
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CN101832294A true CN101832294A (en) | 2010-09-15 |
CN101832294B CN101832294B (en) | 2013-04-17 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1734100A (en) * | 2004-07-30 | 2006-02-15 | 埃默森发动机设备欧洲有限责任公司 | A composite fan rotor for a tangential fan |
EP1921321A1 (en) * | 2005-08-05 | 2008-05-14 | Daikin Industries, Ltd. | Cross-flow fan made of resin and method of manufacturing the same |
CN101457765A (en) * | 2008-12-31 | 2009-06-17 | 浙江朗迪集团股份有限公司 | Metal axial-flow fan roller riveting and forming machine |
CN101479424A (en) * | 2006-06-29 | 2009-07-08 | Bsh博世和西门子家用器具有限公司 | Dryer with reduced noise generation, fan and impeller suitable therefor, and method for producing the impeller |
CN201386694Y (en) * | 2009-04-13 | 2010-01-20 | 宁波朗迪叶轮机械有限公司 | Central disc and bearing rubber for tangential fan |
-
2010
- 2010-05-21 CN CN 201010188552 patent/CN101832294B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1734100A (en) * | 2004-07-30 | 2006-02-15 | 埃默森发动机设备欧洲有限责任公司 | A composite fan rotor for a tangential fan |
EP1921321A1 (en) * | 2005-08-05 | 2008-05-14 | Daikin Industries, Ltd. | Cross-flow fan made of resin and method of manufacturing the same |
CN101479424A (en) * | 2006-06-29 | 2009-07-08 | Bsh博世和西门子家用器具有限公司 | Dryer with reduced noise generation, fan and impeller suitable therefor, and method for producing the impeller |
CN101457765A (en) * | 2008-12-31 | 2009-06-17 | 浙江朗迪集团股份有限公司 | Metal axial-flow fan roller riveting and forming machine |
CN201386694Y (en) * | 2009-04-13 | 2010-01-20 | 宁波朗迪叶轮机械有限公司 | Central disc and bearing rubber for tangential fan |
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