WO2012002107A1 - インペラとその製造方法 - Google Patents
インペラとその製造方法 Download PDFInfo
- Publication number
- WO2012002107A1 WO2012002107A1 PCT/JP2011/062906 JP2011062906W WO2012002107A1 WO 2012002107 A1 WO2012002107 A1 WO 2012002107A1 JP 2011062906 W JP2011062906 W JP 2011062906W WO 2012002107 A1 WO2012002107 A1 WO 2012002107A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impeller
- substrate
- blade
- inner peripheral
- outer peripheral
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
-
- 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
- F04D29/284—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for compressors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
- B29C67/0048—Local deformation of formed objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2222—Construction and assembly
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
-
- 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
- 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
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
-
- 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
- F04D29/30—Vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/7498—Rotors
Definitions
- the present invention integrally includes a substrate and a plurality of impeller blades erected along a curved shape at intervals in the circumferential direction on a surface on one side of the substrate, and the impeller blades are disposed on a rotating shaft core.
- An inner wing portion disposed on the inner peripheral side of the substrate in a posture in which the tip end side is bent while extending in a direction along the direction, and an outer peripheral side of the substrate in a posture extending in a direction along the rotation axis.
- the present invention relates to an impeller including an outer peripheral side wing portion and a manufacturing method thereof.
- the impeller is disposed on the inner peripheral side of the substrate in a posture in which the inner peripheral side blade portion of the impeller blade extends in the direction along the rotation axis and the tip side is bent. Inhalation can be efficiently performed from the circumferential side.
- the conventional impeller is manufactured by dividing an impeller blade into an inner peripheral blade portion and an outer peripheral blade portion, and separately assembling these inner peripheral blade portion and outer peripheral blade portion.
- the inner peripheral wing portion is provided integrally with a substrate of an inducer provided on the impeller inlet side (see, for example, Patent Document 1).
- the present invention has been made in view of the above circumstances, and provides an impeller capable of simplifying manufacturing while providing an impeller blade provided with an inner peripheral blade portion having a three-dimensional shape integrally with a substrate. For the purpose.
- a first characteristic configuration of an impeller according to the present invention is integrally provided with a substrate and a plurality of impeller blades erected along a curved shape at a circumferential interval on one surface of the substrate, and the impeller The blade extends in the circumferential direction while expanding the diameter from the rotating shaft core side, and the impeller blade extends in the direction along the rotating shaft core and bends the tip side to the inner peripheral side of the substrate And an outer peripheral side wing portion disposed on the outer peripheral side of the substrate in a posture extending in a direction along the rotational axis, and in the direction along the rotational axis, The length from the substrate side to the tip side of the inner peripheral side wing part is longer than the length from the substrate side to the tip side of the outer peripheral side wing part, and in the direction along the rotation axis, the inner peripheral wing The blade thickness at the portion is closer to the tip side than the base It lies in the fact that gradually decreases than the side.
- the impeller blades extend in the circumferential direction while expanding the diameter from the rotating shaft core side, and in the direction along the rotating shaft core, the length from the substrate side to the tip side in the inner peripheral blade portion is
- the outer wing portion is longer than the length from the substrate side to the tip side, and the blade thickness at the inner wing portion is gradually reduced from the substrate side toward the tip side. For this reason, in manufacturing the impeller, in the direction along the rotation axis, the length from the substrate side to the tip side is longer than the length from the substrate side to the tip side in the outer wing portion, and the blade thickness is closer to the tip side.
- the length from the board side to the tip side is longer, and
- the impeller can be easily manufactured by plastically deforming the inner wing portion into a three-dimensional shape by bending the tip side portion of the inner wing portion which is thin and easy to bend. . Therefore, with the impeller of this configuration, it is possible to simplify the manufacturing while providing the impeller blade provided with the three-dimensional inner peripheral blade portion integrally with the substrate.
- the impeller is integrally provided with a substrate and a plurality of impeller blades erected along a curved shape at intervals in the circumferential direction on one surface of the substrate.
- the outer peripheral side wing portion disposed on the outer peripheral side of the substrate is continuously provided, and the length from the substrate side to the tip side of the inner peripheral side wing portion in the direction along the rotation axis is the outer periphery. It is longer than the length from the substrate side to the tip side in the side wing portion, and in the direction along the rotational axis, the blade thickness in the inner wing portion gradually decreases from the substrate side toward the tip side. is there.
- the impeller blades are erected in such a manner that the inner peripheral blade portion and the outer peripheral blade portion are continuous, and the length from the substrate side to the tip side of the inner peripheral blade portion is the outer periphery in the direction along the rotation axis.
- the length of the side wing portion is longer than the length from the substrate side to the tip side, and the blade thickness of the inner peripheral wing portion is gradually reduced from the substrate side toward the tip side. For this reason, in manufacturing the impeller, in the direction along the rotation axis, the length from the substrate side to the tip side is longer than the length from the substrate side to the tip side in the outer wing portion, and the blade thickness is closer to the tip side.
- the length from the board side to the tip side is longer, and
- the impeller can be easily manufactured by plastically deforming the inner wing portion into a three-dimensional shape by bending the tip side portion of the inner wing portion which is thin and easy to bend. . Therefore, with the impeller of this configuration, it is possible to simplify the manufacturing while providing the impeller blade provided with the three-dimensional inner peripheral blade portion integrally with the substrate.
- a discontinuous portion where the gradual decrease rate of the blade thickness changes discontinuously is provided along the curved shape of the inner peripheral wing portion, and the inner peripheral wing portion is not It is that it is erected in a posture bent toward at least one of the outer peripheral side of the substrate and the inner peripheral side of the substrate along the continuous portion.
- the inner wing portion provided integrally with the substrate in a two-dimensional shape is plastic in a posture where the tip end portion is bent toward at least one of the outer periphery side of the substrate and the inner periphery side of the substrate.
- the bending force is concentrated on the discontinuous portion provided along the curved shape of the inner wing portion, and the tip side portion is easier to bend than the discontinuous portion. Therefore, it is easy to plastically deform the inner peripheral wing portion into a posture in which the tip end portion is bent toward at least one of the outer peripheral side of the substrate and the inner peripheral side of the substrate.
- the substrate constitutes an impeller back plate
- a shroud assembled to face the impeller back plate across the plurality of impeller blades is the outer periphery of the impeller blades. It is in the point fixed to the side wing part.
- the shroud is fixed to the outer peripheral wing portion of the impeller blade, that is, the two-dimensional inner peripheral wing portion protruding in the direction along the rotation axis, the shroud is used as the impeller blade. On the other hand, it is easy to fix with high accuracy.
- a fifth characteristic configuration of the present invention is that a drain hole is formed in the substrate.
- a sixth characteristic configuration of the present invention is that the shroud is formed with a fitting recess for fitting with the outer peripheral wing portion.
- the characteristic configuration of the method for manufacturing an impeller according to the present invention is that a molding die that can be clamped in a direction along the axis of rotation of the impeller is used, and a circumferential interval is provided between the substrate and one surface of the substrate. And a plurality of impeller blades erected along the curved shape, and the impeller blades are disposed on the inner peripheral side of the substrate in a posture extending in a direction along the rotation axis.
- the impeller manufacturing method has a posture of bending toward at least one of the outer peripheral side of the substrate and the inner peripheral side of the substrate in the molding step in which the substrate and the impeller blade are molded into an integral impeller intermediate product.
- the inner peripheral wing portion is not molded, but the two-dimensional inner peripheral wing portion extending in the direction along the rotation axis is formed integrally with the substrate. For this reason, the impeller intermediate product can be easily released from the molding die.
- the two-dimensional inner peripheral side wing portion of the impeller intermediate product extending in the direction along the rotation axis is formed on the outer peripheral side of the substrate and the inner peripheral side of the substrate.
- (A) is a sectional view of the inner wing portion taken along line IVa-IVa in FIG. 3, and (b) is a sectional view of the outer wing portion taken along line IVb-IVb in FIG.
- FIG. 1 and FIG. 2 show a rotor unit A of an inner rotor type brushless motor used for a vehicle-mounted water pump.
- the rotor unit A is obtained by integrating a rotor 1 of a brushless motor and a centrifugal resin impeller 2 according to the present invention for a water pump.
- a rotor 1 having a yoke 3 and a magnet 4 on which electromagnetic steel plates are laminated, and an impeller 2 are integrally formed of a resin material.
- a resin material for example, a thermoplastic resin such as PPS (Polyphenylene Sulfide) which is a flame retardant resin having high heat resistance and rigidity is used.
- the impeller 2 is provided on one end side of the rotor 1 via the connecting shaft portion 5.
- the impeller 2 rotates integrally with the rotor 1, and the impeller blades 6 act on the water of the water pump.
- a rotation shaft insertion hole 7 that penetrates from the rotor 1 to the impeller 2 through the connecting shaft portion 5 is formed in the center portion of the rotor unit A.
- a support shaft (not shown) is inserted into the rotation shaft insertion hole 7 from the impeller 2 side. This support shaft is supported by two front and rear bearing portions 8 formed on the inner wall of the rotary shaft insertion hole 7.
- the impeller 2 rotates in the direction indicated by the arrow a in FIG.
- the impeller 2 includes a resin-made impeller back plate 9 that is a circular substrate around the rotation axis X and a surface on one side of the impeller back plate 9 (opposite to the rotor 1 side). And a plurality of resin impeller blades 6 erected along a curved shape at regular intervals in the circumferential direction.
- An impeller back plate 9 is integrally connected to the rotor 1 via a connecting shaft portion 5.
- a drain hole 10 is formed in the impeller back plate 9. From the drain hole 10, it is possible to discharge the cooling water remaining in the inner peripheral side wing portion without being discharged.
- the impeller blades 6 extend in the circumferential direction while expanding from the rotational axis X side, and are erected by continuously connecting a three-dimensional inner peripheral blade portion 6a and a two-dimensional outer peripheral blade portion 6b. Yes.
- the inner peripheral side wing portion 6a extends in a direction along the rotational axis X along a curved shape having a larger curvature than the outer peripheral side wing portion 6b, while the tip side portion 6c extends along the normal direction of the curved shape.
- 9 is arranged on the inner peripheral side (hereinafter referred to as the inner peripheral side of the substrate) of the impeller back plate 9 in a posture bent toward the outer peripheral side (lower side of the rotational direction a).
- the outer peripheral wing portion 6b is disposed on the outer peripheral side of the impeller back plate 9 (hereinafter referred to as the outer peripheral side of the substrate) in a posture extending in a direction along the rotation axis X.
- the impeller blade 6 has a length B (hereinafter referred to as blade width) B from the substrate 9 side to the tip side in the inner peripheral blade portion 6a shown in FIG. It is set to be longer than the length (blade width) B from the substrate 9 side to the tip side in the outer peripheral side wing portion 6b shown in b). Further, in the direction along the rotation axis X, as shown in FIG. 4A, the blade thickness T of the inner peripheral blade portion 6a is set to a thickness gradually decreasing from the impeller back plate 9 side toward the tip side. ing.
- the blade thickness T gradually decreases at a middle position in the direction along the blade width B on the blade surface 11 facing the substrate outer peripheral side (lower side in the rotational direction a) of the inner peripheral blade portion 6a.
- the discontinuous portion 12 is provided in a streak shape along the curved shape of the inner peripheral wing portion 6a (longitudinal direction of the inner peripheral wing portion 6a), and as shown in FIG. 5, the tip end portion 6c of the inner peripheral wing portion 6a is Further, it is erected in a bent posture so as to bend toward the outer peripheral side of the substrate along the discontinuous portion 12.
- a resin shroud 13 formed in a circular ring shape is assembled to the outer peripheral blade portion 6 b of the impeller blade 6 so as to face the impeller back plate 9 with the plurality of impeller blades 6 interposed therebetween.
- the shroud 13 includes a cylindrical portion 15 that forms the suction port 14 and a circular flange portion 16 to which the outer peripheral wing portion 6 b is bonded and fixed.
- fitting recesses 17 for fitting and fixing the outer peripheral wing portion 6 b are formed at regular intervals in the circumferential direction.
- the impeller blade 6 is joined and fixed by fitting the distal end side of the outer wing portion 6b into the fitting recess 17, and the inner wing portion 6a faces the inlet 14 from the inside of the shroud 13.
- the impeller manufacturing method uses an impeller back plate 9 and a plurality of impellers as shown in FIG. 8 using a molding die 18 that can be clamped in the direction along the rotational axis X of the impeller 2 as shown in FIG.
- An inner wing portion provided integrally with the blade 6 and disposed on the inner peripheral side of the substrate in a posture in which the impeller blade 6 extends in the direction along the rotation axis X over the entire length along the blade width B.
- An impeller intermediate product 19 in which the outer peripheral side wing portion 6b disposed on the outer peripheral side of the substrate is continuous in a posture extending in the direction along the rotational axis X over the entire length along the blade width B is formed by resin molding.
- FIG. 7 shows a mold apparatus 20 used for resin-molding the rotor unit A that integrally includes the impeller 2 and the rotor 1 in the molding process.
- the mold apparatus 20 includes four molds, that is, an upper mold 20a, a lower mold 20b, and a pair of left and right intermediate molds 20c between the upper mold 20a and the lower mold 20b.
- the upper mold 20a is provided so as to be clamped in the direction along the rotational axis X of the impeller 2 with respect to the left and right intermediate molds 20c, and the impeller back is provided between the upper mold 20a and the left and right intermediate molds 20c.
- Plate forming cavities 21 are provided, and impeller blade forming cavities 22 corresponding to the respective impeller blades 6 are provided in the upper mold 20a. Therefore, the upper mold 20a corresponds to the molding mold 18 that can be clamped in the direction along the rotational axis X of the impeller 2.
- the rotor unit A is provided in the upper mold 20a with the yoke 3 and the magnet 4 mounted in a cavity 23 formed between the upper mold 20a, the lower mold 20b, and the left and right intermediate molds 20c.
- the resin material press-fitted from the gate 24 is integrally molded.
- the impeller blade forming cavity 22 has a two-dimensional shape in which the inner peripheral blade portion 6a and the outer peripheral blade portion 6b extend in a direction along the rotational axis X (clamping direction) with respect to the impeller back plate 9.
- An impeller blade 6 is provided to be molded.
- FIG. 8 shows an impeller intermediate product 19 formed by resin molding in the molding process.
- the impeller blade 6 has an inner wing portion 6a and an outer wing portion 6b with respect to the impeller back plate 9 over the entire length along the blade width B.
- the impeller back plate 9 is integrally formed with a two-dimensional shape that projects in a direction along the rotation axis X.
- a discontinuous portion 12 where the gradual decrease rate of the wing thickness T changes discontinuously is a curved shape of the inner wing portion 6a (inner wing portion). It is formed in a streak shape along the longitudinal direction of the portion 6a.
- FIG. 9 shows a plastic deformation process, in which the inner peripheral side wing portion 6a of the impeller intermediate product 19 placed on the base 29 is hot-pressed and bent by the pressing mold 25, and the tip side portion 6c is discontinuous 12 Are plastically deformed into a three-dimensional shape bent toward the outer peripheral side of the substrate.
- the pressing mold 25 is formed with a concave portion 27 having a pressing surface 26 for deforming the tip side portion 6c of the inner peripheral side wing portion 6a into a predetermined shape facing the lower side in the rotational direction.
- the inner peripheral wing portion 6a of the two-dimensional impeller blade 6 projecting in the direction along the rotational axis X enters the recess 27, and the distal end portion 6c of the inner peripheral wing portion 6a is discontinuous. 12 and can be plastically deformed into a predetermined shape bent toward the outer peripheral side of the substrate.
- the temperature of the inner peripheral blade portion 6a is maintained in the material deformation temperature range (210 to 220 ° C. in this embodiment), and after the plastic deformation to a predetermined shape, the impeller blade 6 is rapidly cooled. And it hardens
- an impeller in which an adhesive resin protrusion 28 that functions as an adhesive is integrally formed on the bottom surface of the fitting recess 17 formed in the circular flange 16.
- the shroud 13 made of the same thermoplastic resin as that forming the resin 2 is assembled to the impeller blade 6.
- the impeller blade 6 and the shroud 13 push the tip portion of the outer peripheral blade portion 6b into the fitting recess 17 with the resin protrusion 28 interposed therebetween, and ultrasonic welding that melts the resin protrusion 28 with ultrasonic vibration and pressure is performed as shown in FIG. As shown in FIG.
- the impeller according to the present invention may integrally include a shroud as a substrate and an impeller blade. 2.
- the impeller according to the present invention may include a substrate and an impeller blade integrally formed of a metal material.
- the impeller according to the present invention plastically deforms the inner peripheral side blade portion of the impeller intermediate product in which the temperature immediately after resin molding is maintained within the material deformation temperature range so as to bend toward the lower side in the rotational direction in the plastic deformation process. May be. 4).
- the impeller according to the present invention is erected in a posture in which the inner peripheral side wing portion is bent toward the inner peripheral side (upper side in the rotational direction) of the impeller back plate (substrate) along the normal direction of the curved shape. May be.
- the inner peripheral side wing portion of the impeller intermediate product is plastically deformed so as to bend toward the inner peripheral side of the substrate.
Abstract
Description
従来の上記インペラは、インペラ翼が内周側翼部分と外周側翼部分とに分割して各別に製作され、これらの内周側翼部分と外周側翼部分とを一体に組み付けて製造されている。
内周側翼部分は、例えばインペラ入口側に装備されるインデューサの基板に一体に設けられている(例えば、特許文献1参照)。
また、インペラ翼は湾曲形状に沿って基板に立設されているので、回転軸芯に沿う方向に延出しつつ先端側を曲げた姿勢の内周側翼部分は三次元形状を有している。
このため、基板と複数のインペラ翼とを一体に備えたインペラを金型で成形して製造する場合は、成形品を金型から離型するための作業が煩雑で、インペラの製造工程が複雑化するおそれがある。
また、基板と複数のインペラ翼とを一体に備えたインペラを切削加工によって製造する場合は三次元加工を施す必要があり、この場合もインペラの製造工程が複雑化するおそれがある。
本発明は上記実情に鑑みてなされたものであって、三次元形状の内周側翼部分が設けられたインペラ翼を基板と一体に備えながら、製造の簡略化を図ることができるインペラを提供することを目的とする。
このため、インペラの製造にあたって、回転軸芯に沿う方向において、基板側から先端側までの長さが外周側翼部分における基板側から先端側までの長さよりも長く、かつ、翼厚が先端側ほど基板側よりも漸減している内周側翼部分を、回転軸芯に沿う方向に突出している二次元形状で基板に一体に設けておけば、基板側から先端側までの長さが長く、しかも、翼厚が薄くて曲げ易い内周側翼部分のうちの先端側部分を、別途、曲げることにより、内周側翼部分を三次元形状に塑性変形させる作業で、インペラを容易に製造することができる。
したがって、本構成のインペラであれば、三次元形状の内周側翼部分が設けられたインペラ翼を基板と一体に備えながら、製造の簡略化を図ることができる。
このため、インペラの製造にあたって、回転軸芯に沿う方向において、基板側から先端側までの長さが外周側翼部分における基板側から先端側までの長さよりも長く、かつ、翼厚が先端側ほど基板側よりも漸減している内周側翼部分を、回転軸芯に沿う方向に突出している二次元形状で基板に一体に設けておけば、基板側から先端側までの長さが長く、しかも、翼厚が薄くて曲げ易い内周側翼部分のうちの先端側部分を、別途、曲げることにより、内周側翼部分を三次元形状に塑性変形させる作業で、インペラを容易に製造することができる。
したがって、本構成のインペラであれば、三次元形状の内周側翼部分が設けられたインペラ翼を基板と一体に備えながら、製造の簡略化を図ることができる。
したがって、内周側翼部分を、先端側部分が基板の外周側及び基板の内周側の少なくとも一方の側に向けて曲がっている姿勢に塑性変形させ易い。
このため、インペラ中間製品を成形金型から容易に離型させることができる。
そして、インペラ中間製品における回転軸芯に沿う方向に延出する姿勢の二次元形状の内周側翼部分を、成形工程とは別の塑性変形工程において、基板の外周側及び基板の内周側の少なくとも一方の側に向けて曲げた姿勢の三次元形状に塑性変形させる。
したがって、三次元形状の内周側翼部分が設けられたインペラ翼を基板と一体に備えたインペラを製造するにあたって、成形工程においてインペラ中間製品を成形金型から容易に離型させることができるので、インペラの製造の簡略化を図ることができる。
図1,図2は、車載用のウォーターポンプに用いられるインナーロータ型のブラシレスモータのロータユニットAを示す。
ロータユニットAは、ブラシレスモータのロータ1とウォーターポンプ用の本発明による遠心形の樹脂製インペラ2とが一体化されたものである。
この樹脂材料には、例えば高い耐熱性と剛性とを有する難燃性樹脂であるPPS(PolyphenyleneSulfide)などの熱可塑性樹脂が用いられる。
図3にも示すように、インペラ2は、回転軸芯Xの周りで円形の基板である樹脂製のインペラ背板9と、インペラ背板9の一方側の面(ロータ1の側とは逆の面)に周方向に一定間隔を隔てて湾曲形状に沿って立設された複数の樹脂製のインペラ翼6とを一体に備えている。インペラ背板9が連結軸部5を介してロータ1と一体に連結されている。
インペラ背板9には、水抜き孔10が形成されている。当該水抜き孔10からは、吐出されずに内周側翼部分に残留した冷却水を排出することができる。
内周側翼部分6aは、外周側翼部分6bよりも曲率が大きい湾曲形状に沿って、回転軸芯Xに沿う方向に延出しつつ先端側部分6cを湾曲形状の法線方向に沿ってインペラ背板9の外周側(回転方向aの下手側)に向けて曲げた姿勢でインペラ背板9の内周側(以下、基板内周側という)に配設されている。
外周側翼部分6bは、回転軸芯Xに沿う方向に延出する姿勢でインペラ背板9の外周側(以下、基板外周側という)に配設されている。
また、回転軸芯Xに沿う方向において、図4(a)に示すように、内周側翼部分6aの翼厚Tは、先端側ほどインペラ背板9の側よりも漸減する厚さに設定されている。
つまり、内周側翼部分6aの先端側部分6cを回転方向aの下手側に向けて曲げる際に、先端側部分6cを連続的に曲がった湾曲形状に曲げ易くしてあり、ウォーターポンプにおける水を効率良く掻き込むことができる。
シュラウド13は、図6に示すように、吸入口14を形成する円筒部15と外周側翼部分6bが接合固定される円形鍔部16とを同芯状に備えている。
インペラ翼6は、外周側翼部分6bの先端側を嵌合凹部17に嵌合して接合固定され、内周側翼部分6aをシュラウド13の内側から吸入口14に臨ませてある。
インペラ製造方法は、図7に示すようにインペラ2の回転軸芯Xに沿う方向に型締め可能な成形金型18を使用して、図8に示すように、インペラ背板9と複数のインペラ翼6とを一体に備え、かつ、インペラ翼6が、翼幅Bに沿う全長に亘って回転軸芯Xに沿う方向に延出する姿勢で基板内周側に配設された内周側翼部分6aと、翼幅Bに沿う全長に亘って回転軸芯Xに沿う方向に延出する姿勢で基板外周側に配設された外周側翼部分6bとが連続しているインペラ中間製品19を樹脂成形する成形工程と、図9に示すように、インペラ中間製品19における内周側翼部分6aの先端側部分6cを基板外周側に向けて曲がるように塑性変形させる塑性変形工程と、インペラ翼6にシュラウド13を組み付ける組付工程とを各別に有する。
金型装置20は、上部金型20aと、下部金型20bと、上部金型20aと下部金型20bとの間の左右一対の中間金型20cとの四つの成形金型を備えている。
したがって、上部金型20aが、インペラ2の回転軸芯Xに沿う方向に型締め可能な成形金型18に対応している。
押圧金型25には、内周側翼部分6aの先端側部分6cを回転方向下手側に向けた所定の形状に変形させる押面26を備えた凹部27を形成してある。
1.本発明によるインペラは、基板としてのシュラウドとインペラ翼とを一体に備えていてもよい。
2.本発明によるインペラは、金属材料で一体形成された基板とインペラ翼とを備えていてもよい。
3.本発明によるインペラは、樹脂成形した直後の温度が材料変形温度範囲内に保持されているインペラ中間製品における内周側翼部分を、塑性変形工程において回転方向下手側に向けて曲がるように塑性変形させてもよい。
4.本発明によるインペラは、内周側翼部分がその先端側を湾曲形状の法線方向に沿ってインペラ背板(基板)の内周側(回転方向の上手側)に向けて曲げた姿勢で立設されていてもよい。
この場合は、インペラの製造方法における塑性変形工程において、インペラ中間製品における内周側翼部分を基板の内周側に向けて曲がるように塑性変形させる。
6 インペラ翼
6a 内周側翼部分
6b 外周側翼部分
6c 先端側
9 基板(インペラ背板)
10 水抜き孔
11 翼面
12 不連続箇所
13 シュラウド
17 嵌合凹部
18 成形金型
19 インペラ中間製品
B インペラ翼の基板側から先端側までの長さ
T 翼厚
X 回転軸芯
Claims (7)
- 基板と、前記基板の一方側の面に周方向に間隔を隔てて湾曲形状に沿って立設された複数のインペラ翼とを一体に備え、
前記インペラ翼は、回転軸芯側から拡径しつつ前記周方向に延出され、
かつ、前記インペラ翼は、回転軸芯に沿う方向に延出しつつ先端側を曲げた姿勢で前記基板の内周側に配設された内周側翼部分及び前記回転軸芯に沿う方向に延出する姿勢で前記基板の外周側に配設された外周側翼部分で構成され、
前記回転軸芯に沿う方向において、前記内周側翼部分における前記基板側から先端側までの長さが前記外周側翼部分における前記基板側から前記先端側までの長さよりも長く、
かつ、前記回転軸芯に沿う方向において、前記内周側翼部分における翼厚が前記先端側ほど前記基板側よりも漸減するインペラ。 - 基板と、前記基板の一方側の面に周方向に間隔を隔てて湾曲形状に沿って立設された複数のインペラ翼とを一体に備え、
前記インペラ翼が、回転軸芯に沿う方向に延出しつつ先端側を曲げた姿勢で前記基板の内周側に配設された内周側翼部分と、前記回転軸芯に沿う方向に延出する姿勢で前記基板の外周側に配設された外周側翼部分とを連続させて立設され、
前記回転軸芯に沿う方向において、前記内周側翼部分における前記基板側から先端側までの長さが前記外周側翼部分における前記基板側から前記先端側までの長さよりも長く、
かつ、前記回転軸芯に沿う方向において、前記内周側翼部分における翼厚が前記先端側ほど前記基板側よりも漸減するインペラ。 - 前記翼厚の漸減率が不連続に変化する不連続箇所が、前記内周側翼部分の前記湾曲形状に沿って設けられ、
前記内周側翼部分が、前記不連続箇所に沿って前記基板の外周側及び前記基板の内周側の少なくとも一方の側に向けて曲げた姿勢で立設されている請求項1又は2に記載のインペラ。 - 前記基板がインペラ背板を構成しており、
前記複数のインペラ翼を挟んで前記インペラ背板に対向させて組み付けられるシュラウドが、前記インペラ翼のうちの前記外周側翼部分に固定されている請求項1~3の何れかに記載のインペラ。 - 前記基板には水抜き孔が形成してある請求項1~4の何れかに記載のインペラ。
- 前記シュラウドには、前記外周側翼部分と嵌合する嵌合凹部が形成してある請求項4に記載のインペラ。
- インペラの回転軸芯に沿う方向に型締め可能な成形金型を使用して、基板と、前記基板の一方側の面に周方向に間隔を隔てて湾曲形状に沿って立設された複数のインペラ翼とを一体に備え、かつ、前記インペラ翼が、回転軸芯に沿う方向に延出する姿勢で前記基板の内周側に配設された内周側翼部分と、前記回転軸芯に沿う方向に延出する姿勢で前記基板の外周側に配設された外周側翼部分とが連続しているインペラ中間製品を成形する成形工程と、
前記インペラ中間製品における前記内周側翼部分を前記基板の外周側及び前記基板の内周側の少なくとも一方の側に向けて曲がるように塑性変形させる塑性変形工程とを各別に有するインペラの製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012522537A JP5299727B2 (ja) | 2010-06-30 | 2011-06-06 | インペラ |
US13/700,928 US9115589B2 (en) | 2010-06-30 | 2011-06-06 | Impeller and method for producing same |
CN201180030523.5A CN102959249B (zh) | 2010-06-30 | 2011-06-06 | 叶轮及其制造方法 |
EP11800575.0A EP2589815A4 (en) | 2010-06-30 | 2011-06-06 | DRIVE AND METHOD FOR THE PRODUCTION THEREOF |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010149413 | 2010-06-30 | ||
JP2010-149413 | 2010-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012002107A1 true WO2012002107A1 (ja) | 2012-01-05 |
Family
ID=45401837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/062906 WO2012002107A1 (ja) | 2010-06-30 | 2011-06-06 | インペラとその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9115589B2 (ja) |
EP (1) | EP2589815A4 (ja) |
JP (1) | JP5299727B2 (ja) |
CN (1) | CN102959249B (ja) |
WO (1) | WO2012002107A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013223994A (ja) * | 2012-04-23 | 2013-10-31 | Honda Motor Co Ltd | インペラの製造方法 |
CN104160158A (zh) * | 2012-03-13 | 2014-11-19 | 爱信精机株式会社 | 叶轮的制造方法和叶轮 |
JP2015102002A (ja) * | 2013-11-25 | 2015-06-04 | 三星電子株式会社Samsung Electronics Co.,Ltd. | ターボファン及びこれを用いた空気調和機 |
WO2016143372A1 (ja) * | 2015-03-06 | 2016-09-15 | 本田技研工業株式会社 | インペラの製造方法 |
JP2017078393A (ja) * | 2015-10-22 | 2017-04-27 | ミネベアミツミ株式会社 | インペラ、そのインペラの製造方法及びそのインペラを備える遠心ファン |
JP2018529880A (ja) * | 2015-10-02 | 2018-10-11 | サンダイン エルエルシー | 低キャビテーションのインペラおよびポンプ |
US11629725B2 (en) * | 2020-04-13 | 2023-04-18 | Acer Incorporated | Centrifugal heat dissipation fan |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014180146A (ja) * | 2013-03-15 | 2014-09-25 | Hitachi Automotive Systems Ltd | ロータ構造および電動流体ポンプ |
CN103216452B (zh) * | 2013-04-25 | 2016-05-11 | 常州雷利电机科技有限公司 | 排水泵 |
JP6203867B2 (ja) * | 2013-12-27 | 2017-09-27 | 本田技研工業株式会社 | インペラ |
EP3032721B1 (en) * | 2014-12-11 | 2021-09-15 | Johnson Electric International AG | Motor, pump and cleaning apparatus |
CN104929973A (zh) * | 2015-05-08 | 2015-09-23 | 江苏大学 | 一种与径向导叶匹配的多级离心泵叶轮 |
JPWO2016185570A1 (ja) * | 2015-05-19 | 2018-03-15 | 株式会社日立製作所 | 遠心圧縮機 |
JP6621194B2 (ja) * | 2015-06-03 | 2019-12-18 | 三星電子株式会社Samsung Electronics Co.,Ltd. | ターボファン及びこのターボファンを用いた送風装置 |
US20220003241A1 (en) * | 2018-11-08 | 2022-01-06 | Zip Industries (Aust) Pty Ltd | Pump Assembly |
ES2953936T3 (es) * | 2019-12-13 | 2023-11-17 | Dab Pumps Spa | Rodete para bomba centrífuga, particularmente para una bomba de rodete empotrado, y bomba con dicho rodete |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58119998A (ja) * | 1982-01-12 | 1983-07-16 | Mitsubishi Heavy Ind Ltd | コンプレツサ翼車とその製造方法 |
JPS58128243A (ja) * | 1982-01-27 | 1983-07-30 | Nippon Light Metal Co Ltd | 羽根車の製造方法 |
JPH08193598A (ja) * | 1995-01-18 | 1996-07-30 | Matsushita Electric Ind Co Ltd | 電動送風機 |
JP2666490B2 (ja) | 1989-10-20 | 1997-10-22 | 松下電器産業株式会社 | 電動送風機 |
JP2008169826A (ja) * | 2006-12-14 | 2008-07-24 | Matsushita Electric Ind Co Ltd | 遠心羽根車および遠心送風機 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1183675A (en) | 1980-12-19 | 1985-03-12 | Isao Miki | Method for producing profiled product having fins |
JPS59120338A (ja) | 1982-12-28 | 1984-07-11 | Nippon Light Metal Co Ltd | 羽根車の製造方法 |
US4708593A (en) * | 1986-02-28 | 1987-11-24 | Robinson Industries, Inc. | Surgeless combustion air blower |
JP4663259B2 (ja) | 2004-06-18 | 2011-04-06 | 日立アプライアンス株式会社 | 送風機及び電気掃除機 |
-
2011
- 2011-06-06 JP JP2012522537A patent/JP5299727B2/ja not_active Expired - Fee Related
- 2011-06-06 EP EP11800575.0A patent/EP2589815A4/en not_active Withdrawn
- 2011-06-06 WO PCT/JP2011/062906 patent/WO2012002107A1/ja active Application Filing
- 2011-06-06 US US13/700,928 patent/US9115589B2/en not_active Expired - Fee Related
- 2011-06-06 CN CN201180030523.5A patent/CN102959249B/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58119998A (ja) * | 1982-01-12 | 1983-07-16 | Mitsubishi Heavy Ind Ltd | コンプレツサ翼車とその製造方法 |
JPS58128243A (ja) * | 1982-01-27 | 1983-07-30 | Nippon Light Metal Co Ltd | 羽根車の製造方法 |
JP2666490B2 (ja) | 1989-10-20 | 1997-10-22 | 松下電器産業株式会社 | 電動送風機 |
JPH08193598A (ja) * | 1995-01-18 | 1996-07-30 | Matsushita Electric Ind Co Ltd | 電動送風機 |
JP2008169826A (ja) * | 2006-12-14 | 2008-07-24 | Matsushita Electric Ind Co Ltd | 遠心羽根車および遠心送風機 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2589815A4 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104160158A (zh) * | 2012-03-13 | 2014-11-19 | 爱信精机株式会社 | 叶轮的制造方法和叶轮 |
JP2013223994A (ja) * | 2012-04-23 | 2013-10-31 | Honda Motor Co Ltd | インペラの製造方法 |
JP2015102002A (ja) * | 2013-11-25 | 2015-06-04 | 三星電子株式会社Samsung Electronics Co.,Ltd. | ターボファン及びこれを用いた空気調和機 |
WO2016143372A1 (ja) * | 2015-03-06 | 2016-09-15 | 本田技研工業株式会社 | インペラの製造方法 |
JP2018529880A (ja) * | 2015-10-02 | 2018-10-11 | サンダイン エルエルシー | 低キャビテーションのインペラおよびポンプ |
JP2017078393A (ja) * | 2015-10-22 | 2017-04-27 | ミネベアミツミ株式会社 | インペラ、そのインペラの製造方法及びそのインペラを備える遠心ファン |
US11629725B2 (en) * | 2020-04-13 | 2023-04-18 | Acer Incorporated | Centrifugal heat dissipation fan |
Also Published As
Publication number | Publication date |
---|---|
EP2589815A4 (en) | 2015-04-15 |
US9115589B2 (en) | 2015-08-25 |
CN102959249A (zh) | 2013-03-06 |
US20130071247A1 (en) | 2013-03-21 |
CN102959249B (zh) | 2015-09-23 |
EP2589815A1 (en) | 2013-05-08 |
JP5299727B2 (ja) | 2013-09-25 |
JPWO2012002107A1 (ja) | 2013-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5299727B2 (ja) | インペラ | |
JP6493620B2 (ja) | 遠心送風機 | |
JP6228728B2 (ja) | 遠心送風ファン | |
EP3399195B1 (en) | Method and apparatus for manufacturing an impeller of a centrifugal fan | |
JP4715280B2 (ja) | 永久磁石埋め込み型モータ、ポンプ装置、及び永久磁石埋め込み型モータの製造方法 | |
EP1939455A1 (en) | Impeller of multiblade blower and method of manufacturing the same | |
US8317468B2 (en) | Flow-routing component of a pump | |
EP2749773B1 (en) | Impeller and rotary machine provided with the same | |
US20160245304A1 (en) | Compressor housing for supercharger | |
JP5599463B2 (ja) | 2段式の渦巻きポンプ | |
KR101432020B1 (ko) | 샤프트식 크로스 플로우 팬 및 그 제조 방법 | |
TWI479086B (zh) | 散熱風扇及其扇輪 | |
US10480520B2 (en) | Motor-driven fan with an assembly for minimizing vibration and strain | |
JP5303120B2 (ja) | インペラ | |
WO2016136681A1 (ja) | 過給機用のコンプレッサハウジング及びその製造方法 | |
EP2796722B1 (en) | Automotive electrical coolant pump with crimped housing | |
JP2667748B2 (ja) | 多翼羽根車 | |
JP2014058890A (ja) | 過給機用のコンプレッサハウジング | |
JP4557300B2 (ja) | 自動車エンジン冷却用ウォーターポンプのインペラ製造方法 | |
WO2000073661A1 (en) | Turbo fan | |
JP6690629B2 (ja) | 遠心ファン又は遠心ファンを有する空調室内機 | |
JP3050461B2 (ja) | 渦流ブロワの羽根車及びその製造方法 | |
JP2010196680A (ja) | 両吸込ポンプ | |
KR20140128707A (ko) | 임펠러 | |
JP2020153276A (ja) | 遠心ファン |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180030523.5 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11800575 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012522537 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13700928 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011800575 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |