WO1992007191A1 - Roue a aubes pour soufflante a flux tourbillonnaire et procede de fabrication de ladite roue - Google Patents

Roue a aubes pour soufflante a flux tourbillonnaire et procede de fabrication de ladite roue Download PDF

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Publication number
WO1992007191A1
WO1992007191A1 PCT/JP1991/001408 JP9101408W WO9207191A1 WO 1992007191 A1 WO1992007191 A1 WO 1992007191A1 JP 9101408 W JP9101408 W JP 9101408W WO 9207191 A1 WO9207191 A1 WO 9207191A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
impeller
casing
annular groove
blade casing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1991/001408
Other languages
English (en)
Japanese (ja)
Inventor
Takashi Watanabe
Kanji Mizutani
Yuuichi Nakatsuhama
Yukio Makuta
Kazuo Yanagiya
Tomoya Tamura
Masayuki Fujio
Eiichi Ito
Hiromoto Ashihara
Yasushi Yoshioka
Masayuki Tsumiyama
Yoshiaki Noda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP27941190A external-priority patent/JP2804621B2/ja
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of WO1992007191A1 publication Critical patent/WO1992007191A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/626—Mounting or removal of fans

Definitions

  • the present invention relates to an impeller of a vortex blower and a method of manufacturing the same, and more particularly to an impeller suitable for a vortex blower having a three-dimensional blade and a method of manufacturing the same.
  • the impeller of a conventional vortex blower having a two-dimensionally shaped blade has been manufactured mainly by die-casting or the like because of its relatively simple shape. This is because the impeller has a shape that blocks the drawing direction of the die, so that it would be difficult to manufacture using the structure as in the prior art.
  • Japanese Patent Laid-Open Publication No. Sho 51-57011 discloses that when such an impeller is manufactured by a structure, the impeller is divided into two parts in the rotation axis direction. Then, it proposes a method that makes it possible to eliminate the core of the structure by completing the impeller after the structure is assembled.
  • the prior art described above does not give sufficient consideration to the advanced three-dimensional shape of the impeller blades, and it is difficult to deal with impellers that have more complicated layers. was there.
  • a die cast or a mold structure is generally used. At this time, if the blade has a three-dimensional shape, the product is converted from the mold. They can't cope because they can't come off.
  • An object of the present invention is to make it possible to easily cope with an impeller of a vortex blower having a complicated shape, to further form a three-dimensional shape of an impeller blade, and to sufficiently obtain a high performance of an eddy current blade.
  • An object of the present invention is to provide an eddy blower impeller and a method for manufacturing the same.
  • the present invention relates to an impeller of a vortex fan having a blade casing and a plurality of blades, wherein the blade casing and the blade are used as a member, and the blade is attached to the blade casing.
  • Another aspect of the present invention is a method of independently forming only a blade casing, a step of independently forming only a blade, and attaching a blade to a blade casing. Process and manufacture the impeller It is a thing.
  • the blade mold Since the blade casing and the blade can be manufactured separately, even if the blade impeller has a three-dimensional shape when viewed as a whole, if the blade casing and the blade are made of the respective members, the blade mold is It can be two-dimensionally opened and closed, and can be easily manufactured by die casting or die making.
  • the blade can be used as it is, even if it has a rather complicated shape, and it can be processed by die-casting, die-casting, and press molding. But it can be easily mass-produced.
  • FIG. 1 is a partial cross-sectional view showing an embodiment of a bubbling blower having an impeller according to the present invention
  • FIGS. 2, 3, and 4 are each an embodiment of an impeller according to the present invention.
  • FIGS. 5 and 6 are cross-sectional views each showing an embodiment of the present invention.
  • FIG. 7 is an explanatory view of a blade casing and a blade according to an embodiment of the present invention.
  • FIG. 9 is an explanatory view of a caulking method in one embodiment of the present invention
  • FIG. 9 is an explanatory view of an insertion groove in one embodiment of the present invention
  • FIG. 10 is an explanatory view of a bending method in one embodiment of the present invention, FIG.
  • FIG. 11 is an explanatory view of a bending apparatus used in one embodiment of the present invention
  • FIG. 12 is an explanatory view showing an embodiment of a through hole
  • the 14th session is an explanatory diagram showing the generation of mounting stress after bending due to the shape of the through hole.
  • FIG. 16 is an explanatory view of a caulking method by heating
  • FIG. 16 is an explanatory view of a notched portion having a different shape
  • FIG. 17 is an explanatory view showing another embodiment of bending according to the present invention
  • FIG. FIG. 19 is an explanatory view of an embodiment using the filler according to the present invention
  • FIG. 19 is an explanatory view of an ultrasonic soldering apparatus used in the present invention
  • FIG. 20 is a description of the shape of a blade used in the present invention FIG.
  • FIG. 1 shows an embodiment of an eddy blower according to the present invention, in which 1 is an impeller, 2 is a casing forming a boosting path 3, and 4 is an electric motor for moving the impeller 1.
  • the booster path 3 is formed in an arc shape centered on the rotation center of the impeller 1, that is, the rotation axis center line 5 of the electric motor 4, and is opened in parallel with the tilling axis center line 5, and as shown in the figure. It is formed as a semicircular groove.
  • the blade casing 6 is a blade casing, 7 is an annular groove, and 8 is a blade.
  • the blade casing 6 and the blade 8 are manufactured as a single member, and then combined to form the impeller 1.
  • the annular groove 7 formed on the blade casing 6 is formed as an annular groove formed of concentric circles centered on the rotation axis center line 5, and a plurality of blades 8 are mounted in the direction crossing the annular groove. It has been done. At this time, as shown in FIG. 2, these blades 8 are mounted so as to extend in the radial direction from the rotation axis center line 5, and as shown in the third case, they are inclined at a predetermined angle from the radial direction. In some cases, the blade is mounted so that the blade itself forms a curve, as shown in Fig. 4.
  • the cross-sectional shape cut along the circumference centered on the rotation axis center line 5 also shows that each blade is parallel to the rotation axis center line 5 as shown in FIG. As shown in FIG. 6, the blade may be curved.
  • the embodiment shown in FIG. 1 is based on a caulking (caulking) method using a protrusion 9 formed on a blade 8, and as shown in FIG. 7 (a), the protrusions 9a, 9 A blade 8 having b is prepared, and accordingly, as shown in FIG. 3B, the blade casing 6 is also provided with an aperture 10a and an aperture 10b.
  • the protruding portion 9a of the blade 8 is inserted into the through hole 10a, and the protruding portion 9b is inserted into the notch 10b.
  • the blade 8 is attached to the blade casing 6 by tightening by performing caulking.
  • the material is made of a material having predetermined conductive properties such as heat resistance and stainless steel promotion and temperature strength properties.
  • the electrodes 11 and 12 can be processed by using a conductive material such as copper.
  • a heat-resistant material such as stainless steel is desirable.
  • the blade 8 is pressed in accordance with the shape of the annular groove 7 to form the rib portion 8a.
  • the stability of the blade 8 at the time is increased, and more favorable airtightness can be provided.
  • FIG. 9 shows another embodiment of the present invention, which shows a cross-sectional shape cut along a circumference centered on the rotation axis center line 5 of the impeller 1.
  • FIG. 7A an insertion groove 13 slightly narrower than the thickness of the blade 8 is formed on the inner periphery of the annular groove 7 of the blade casing 6.
  • the blade 8 is attached to the blade casing 6 by press-fitting the blade 8.
  • the blade 8 is further provided with a protruding portion 9 for caulking, and the caulking method is used in combination with the embodiment of FIG. 9 (a). Unobtrusive strength can be obtained.
  • FIG. 10 shows still another embodiment of the present invention, in which a protrusion 9 a of a blade 8 is inserted into a through hole 10 a provided in a blade casing 6, and a blade casing 6 of the protrusion 9 a is formed.
  • the roll 15 forcibly rotated in the direction of the arrow is moved in the direction of the arrow a while bending the part 9 a ′ that protrudes outward. It is. Needless to say, this bending is a kind of plastic deformation.
  • the roll 15 is moved in the direction of arrow A while the blade casing 6 is fixed, and the bending is performed while rotating the roll 15 as shown by the arrow opening.
  • the roll 15 may only be tilled to stop the movement, and the blade casing 6 may be bent in a fixed state by moving the blade casing 6 in the direction opposite to the direction indicated by the arrow a.
  • the roll 15 is forcibly rotated in the direction of the arrow, that is, in the direction in which the portion 9a 'is drawn in during bending by the roll 15, and as a result, the bending is performed. A swaged state by processing is obtained sufficiently firmly.
  • FIG. 11 shows the processing method in the embodiment shown in FIG. 10 more specifically, wherein FIG. 11 (a) is a top view, FIG. 11 (b) is a side sectional view, and roll 15 is a rotating disk. 15a, so that the rotating disk 15a is rotated in the direction of arrow C while pressurizing between the rotating disk 15a and the blade holder 14. Accordingly, the portion 9 a ′ protruding outside the blade casing 6 can be bent. At this time, it is sufficient that the number of rolls 15 should be at least one, but as shown in the figure, it is necessary to provide at least three rolls in order to obtain stable processing. Needless to say.
  • Fig. 12 (a) shows a straight cross-sectional shape of the through hole 10a
  • Fig. 12 (b) shows a tapered portion 16 provided inside the blade casing 6.
  • FIG. 3 ( c ) shows a cutout 17 provided outside the blade casing 6 in addition to the tapered portion 16, and an embodiment using a combination of these cutouts is also conceivable.
  • FIG. 12 (b) having the taper portion 16 ) And (c) are more similar to the embodiment of FIG.
  • the material shown in FIG. 12 (b) is applied to the blade 8 using a material that does not cause or is unlikely to cause bending cracks.
  • the through hole 10a of the blade casing 6 is bent during the bending.
  • the bent portion near the deformed at within ⁇ deformation limits, thereafter, as shown in FIG. (c), even after machining end, resulting in elastic deformation a 2 Te this variant a Niyotsu.
  • the blade 8 leave such because of the state where the stress due to the elastic deformation A 2 remaining this is given, after all, according to this embodiment, the locking function of preventing at the bent portion Can be given sufficiently.
  • FIG. 15 shows still another embodiment of the present invention.
  • the protrusion 9 b of the blade 8 is inserted into the cutout 1 O b of the blade casing 6, This is done by hot caulking and fastening.
  • FIG. 1 (a) shows the embodiment of FIG. 1 (a)
  • the blade casing 6 is positioned in a predetermined state between the upper electrode 11 and the lower electrode 12 made of a material having strength characteristics, and the upper electrode 11 presses the protruding portion 9b.
  • the projection 9b is energized and heated to perform hot caulking.
  • both the blade casing 6 and the blade 8 need to be made of a conductive material, and at this time, the blade casing 6 is affected by heating. It is not suitable for materials that require avoidance.
  • FIG. 15 (b) there is an embodiment shown in FIG. 15 (b). That is, the embodiment shown in FIG. 15 (b) uses the work receiver 19 to position the blade casing 6 and to have predetermined conductive properties such as heat resistant steel and stainless steel and high temperature strength properties.
  • the protruding portion 9b on the rain side of the blade 8 is pressurized by the electrode 11 made of a material, and a current is applied in series between the 2 ⁇ protruding portions 9b to heat and hot caulking is performed. Therefore, according to the embodiment shown in FIG. 15 (b), it is sufficient that the blade 8 has conductivity, and the conductivity of the blade casing 6 does not matter. Since the blade casing 6 may be made of a material and the blade casing 6 is not directly heated, the material can be easily manufactured by hot swaging even if the material is not required to be affected by the heating.
  • FIG. 16 (a) shows a notch portion 10a having a simple shape and having a flat wall surface 10c, and the effect of the present invention can be sufficiently obtained by this embodiment.
  • a recess 10d is formed in a part of the wall surface 10c, and the protrusion 9b of the blade 8 is correspondingly formed in the recess 10d. If the projection 9c of 2 is formed, the plastically deformed portion of the projection 9c flows and fills the recess 10d during the caulking process described above, so that a stronger connection can be obtained. High strength impellers can be easily created.
  • the embodiment of the 17th country is a case where the bending process is applied to the mounting process of the protruding portions 9a and 9b of the blade 8 to the two blade casings 6 (FIG.
  • FIG. 7A and its A-A cross-sectional view (b) and the B-B cross-sectional view (c) not only the protrusion 9a of the blade 8 but also the protrusion
  • the part 9b is also subjected to bending with the roll 15 as described above.
  • FIG. 18 (a) shows still another embodiment of the present invention, in which a filler 20 is provided at a corner portion appearing at the joint between the inner surface of the vertical groove 7 of the blade casing 6 and the blade 8. Things.
  • the filler 20 not only helps to improve the airtightness described above, but also functions to smooth the air flow by making the shape of the corners curved. Therefore, it is extremely effective in improving the characteristics of the vortex blower.
  • Fig. 18 (b) shows an embodiment for providing the filler 20.
  • a material of the blade 8 a metal having a lower melting point than the main body 8a is provided on both sides of the main body 8a.
  • the coating material 8 b is melted in a heating atmosphere, and as shown in FIG. 18 (a), The filler 20 is formed.
  • the coating material 8b liquefied by the heating and melting of the coating material 8b gathers at the corners, and when cooled, solidifies into a predetermined shape and forms the filler 20.
  • FIG. 19 is based on the ultrasonic jet soldering method.
  • 21 is a jet solder bath
  • 22 is an ultrasonic oscillator
  • 23 is solder in a molten state.
  • the ultrasonic oscillator 22 is operated, the molten solder 23 appears as a jet flow upward.
  • the impeller 1 on which the blade 8 is attached to the blade casing 6 by a method such as caulking of the protruding portion or press-fitting into the insertion groove is positioned as shown in the drawing, and rotated as shown by the arrow 2. If it does, the molten solder is injected into the annular groove of the blade casing 6 and the solder Accordingly, as shown in FIG. 8 (a), the filler 20 is formed, and the attachment of the blade 8 to the blade casing 6 is strengthened.
  • the oxide film on the soldering surface is destroyed by the erosion effect of the ultrasonic wave, so that the application of the flux is unnecessary, and the impeller having extremely good airtightness and aerodynamic characteristics is provided. Can be obtained efficiently and easily.
  • an appropriate adhesive may be applied to the insertion groove 13 before inserting the blade 8 into the insertion groove 13 of the blade casing 6. good.
  • the filler 20 can be easily provided without particularly performing a work step for receiving the filler, and therefore, this is also an embodiment of the present invention.
  • Fig. 20 (a) shows an example of a blade having an arc-shaped cross section
  • Fig. 20 (b) shows an example of a blade also bent at the center
  • Fig. 20 (c) shows an S-shaped cross section It is an example of a blade.
  • a blade having a complicated three-dimensional shape as shown in FIGS. 20 (a) to (c) can be arbitrarily adopted. Even the impeller of this type can be freely taken in, and it is possible to sufficiently pursue the high performance of the eddy current probe.
  • the blade casing and the blade constituting the impeller of the vortex blower are each composed of different members, and therefore, the manufacturing method is also as follows. And a step of forming a blade, and then a step of assembling these members to complete an impeller.
  • the blade casing and the blade are formed as separate members, and the blade is assembled to the blade casing to form the impeller. It is possible to easily obtain a small effect as described in (1).
  • the blade casing and the blade can be made as separate members, the required wall thickness can be reduced without considering the hot water recirculation, etc., and the motor required for driving is sufficiently miniaturized. I can do it.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Cette invention se rapporte à une roue pour une soufflante à flux tourbillonnaire, pourvue d'ailettes d'une forme tridimensionnelle fabriquées indépendamment d'une embase d'ailettes puis fixées à ladite embase. L'invention se rapporte en outre à un procédé de fabrication de ladite roue, consistant à fabriquer uniquement l'embase d'ailettes indépendamment des autres éléments, puis à fabriquer les ailettes uniquement, indépendamment des autres éléments, et à fixer les ailettes à l'embase. Cette invention peut s'appliquer à une roue d'une forme extrêmement compliquée et permet d'obtenir infailliblement une soufflante à flux tourbillonnaire présentant des performances élevées et à un coût peu élevé.
PCT/JP1991/001408 1990-10-19 1991-10-16 Roue a aubes pour soufflante a flux tourbillonnaire et procede de fabrication de ladite roue Ceased WO1992007191A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2/279411 1990-10-19
JP27941190A JP2804621B2 (ja) 1990-01-09 1990-10-19 渦流ブロワの羽根車及びその製造方法

Publications (1)

Publication Number Publication Date
WO1992007191A1 true WO1992007191A1 (fr) 1992-04-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/001408 Ceased WO1992007191A1 (fr) 1990-10-19 1991-10-16 Roue a aubes pour soufflante a flux tourbillonnaire et procede de fabrication de ladite roue

Country Status (3)

Country Link
EP (1) EP0506974A4 (fr)
KR (1) KR0185156B1 (fr)
WO (1) WO1992007191A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7470104B2 (en) 2005-05-27 2008-12-30 Hitachi Industrial Equipment Systems, Co. Ltd. Blower

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013220668A1 (de) * 2013-10-14 2015-04-16 Continental Automotive Gmbh Laufrad für eine insbesondere als Seitenkanalgebläse ausgebildete Seitenkanal-Strömungsmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474298A (en) * 1944-09-11 1949-06-28 Borg Warner Fluid wheel
US2807217A (en) * 1955-09-16 1957-09-24 Krzyszczuk Edward Fluid compressor
US3392675A (en) * 1965-10-22 1968-07-16 Ford Motor Co Centrifugal pump
JPS56106098A (en) * 1980-01-30 1981-08-24 Hitachi Ltd Vane wheel for pump
JPS5713900U (fr) * 1980-06-26 1982-01-23
JPS5735198A (en) * 1980-08-08 1982-02-25 Hitachi Ltd Assembling of fan
JPH0240097A (ja) * 1988-07-29 1990-02-08 Hitachi Ltd 渦流送風機用羽根車
JPH02215997A (ja) * 1989-02-13 1990-08-28 Hitachi Ltd 羽根車、及びその製造方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB732334A (en) * 1952-11-07 1955-06-22 Doyle Vacuum Cleaner Co Improvements in or relating to centrifugal fan wheel
US3147541A (en) * 1959-11-16 1964-09-08 Torrington Mfg Co Mixed-flow fan and method of making
KR940007889B1 (ko) * 1989-02-13 1994-08-27 가부시끼가이샤 히다찌세이사꾸쇼 와류블로워

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474298A (en) * 1944-09-11 1949-06-28 Borg Warner Fluid wheel
US2807217A (en) * 1955-09-16 1957-09-24 Krzyszczuk Edward Fluid compressor
US3392675A (en) * 1965-10-22 1968-07-16 Ford Motor Co Centrifugal pump
JPS56106098A (en) * 1980-01-30 1981-08-24 Hitachi Ltd Vane wheel for pump
JPS5713900U (fr) * 1980-06-26 1982-01-23
JPS5735198A (en) * 1980-08-08 1982-02-25 Hitachi Ltd Assembling of fan
JPH0240097A (ja) * 1988-07-29 1990-02-08 Hitachi Ltd 渦流送風機用羽根車
JPH02215997A (ja) * 1989-02-13 1990-08-28 Hitachi Ltd 羽根車、及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0506974A4 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7470104B2 (en) 2005-05-27 2008-12-30 Hitachi Industrial Equipment Systems, Co. Ltd. Blower
US7806649B2 (en) 2005-05-27 2010-10-05 Hitachi Industrial Equipment Systems Co., Ltd Blower

Also Published As

Publication number Publication date
KR927004017A (ko) 1992-12-19
EP0506974A4 (en) 1993-04-07
EP0506974A1 (fr) 1992-10-07
KR0185156B1 (ko) 1999-05-01

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