KR20120066329A - Method for manufacturing water pump impeller assembly - Google Patents

Method for manufacturing water pump impeller assembly Download PDF

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Publication number
KR20120066329A
KR20120066329A KR1020100127607A KR20100127607A KR20120066329A KR 20120066329 A KR20120066329 A KR 20120066329A KR 1020100127607 A KR1020100127607 A KR 1020100127607A KR 20100127607 A KR20100127607 A KR 20100127607A KR 20120066329 A KR20120066329 A KR 20120066329A
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KR
South Korea
Prior art keywords
shroud
water pump
vane
impeller
hole
Prior art date
Application number
KR1020100127607A
Other languages
Korean (ko)
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KR101185717B1 (en
Inventor
김경환
유정기
Original Assignee
명화공업주식회사
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Priority to KR20100127607A priority Critical patent/KR101185717B1/en
Publication of KR20120066329A publication Critical patent/KR20120066329A/en
Application granted granted Critical
Publication of KR101185717B1 publication Critical patent/KR101185717B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
    • 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
    • F04D29/007—Details, component parts, or accessories especially adapted for liquid 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially adapted for liquid 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
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F04D29/245—Geometry, shape for special effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2210/00—Working fluids
    • F05D2210/10—Kind or type
    • F05D2210/11—Kind or type liquid, i.e. incompressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S416/00—Fluid reaction surfaces, i.e. impellers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Abstract

The present invention (a) the disk is formed with a through hole in the center, and one side of the disk is disposed radially with an inclination angle around the through hole, the upper portion has a plurality of vanes having protrusions projecting upwards (B) a circular hole is formed in the center, and a plurality of slits are formed spirally on the lower surface coupled to the vane, and the body has a shroud having an insertion hole formed at a position corresponding to the protrusion. And preparing (c) combining the impeller and the shroud by using an ultrasonic welding method, wherein the vane protrusion is inserted into the insertion hole of the shroud and fused to provide a manufacturing method of the water pump impeller assembly. do.
Therefore, by using an engineering plastic injection method that can maximize the degree of freedom in the design of the impeller vanes, it is possible to reduce the hydraulic loss of the cooling water in the water pump impeller assembly, thereby reducing the power consumption of the water pump to increase the efficiency of the water pump. .
In addition, by forming the upper portion of the insertion hole of the shroud into which the protrusion formed on the vane is concave, it can increase the adhesive force between the vane and the shroud through the ultrasonic welding method, and prevent burrs generated during the adhesion. The strong adhesion by the fusion method can reduce the cost of the product.

Description

Method for manufacturing water pump impeller assembly

The present invention relates to a method of manufacturing a water pump impeller assembly, and more particularly, to a method of manufacturing a water pump impeller for assembling vanes and shrouds by ultrasonic welding.

In general, a water pump for a vehicle engine is a device for circulating a coolant in an engine and is composed of an impeller, a mechanical seal, a drive bearing, and a body to impart rotational kinetic energy transmitted to the water pump by an engine crankshaft or an electric motor. It is a device that forcibly circulates the coolant in the engine by converting it into kinetic energy of the coolant through the vane of.

As a water pump impeller used for forced circulation of such cooling water, a structure as shown in FIG. 1 has been generally used.

Referring to FIG. 1, the water pump impeller 50 includes a boss 12 having a through hole formed at a center thereof, and an upper portion of the impeller upper member having a plurality of vanes 11 radially formed around the boss 12. 20 and a disk-shaped impeller lower member 30 having a circular hole 13 formed in the center thereof.

The impeller upper member 20 and the impeller lower member 30 are each manufactured by a cold rolling press method, and then integrally coupled. The impeller upper member 20 and the impeller lower member 30 are coupled to each other by an impeller. The center of the boss 12 of the upper member 20 and the center of the circular hole 13 of the impeller lower member 30 are matched to weld the upper member 20 and the lower member 30 of the impeller, respectively.

When the water pump impeller is manufactured by a cold rolled steel sheet press working method, the coolant flow in the impeller collides with vanes and the coolant flow near the inlet of the coolant, causing vortices. Then, a vortex is generated on the side of the vane near the cooling water outlet.

The conventional method of welding cold rolled steel sheet is due to the vane design constraints due to the structural limitations of the cold rolled steel sheet press working, resulting in leakage loss between impellers, coolant flow and vane collisions, and vortices. There is a problem that the hydraulic loss occurs to reduce the performance and efficiency of the pump.

An object of the present invention is to provide a water pump impeller manufacturing method capable of optimizing the shape of the vanes to prevent hydraulic losses and leakage losses between the vanes due to the coolant flow, the collision between the vanes and the generation of vortices.

The present invention (a) the disk is formed with a through hole in the center, and one side of the disk is disposed radially with an inclination angle around the through hole, the upper portion has a plurality of vanes having protrusions projecting upwards (B) a circular hole is formed in the center, and a plurality of slits are formed spirally on the lower surface coupled to the vane, and the body has a shroud having an insertion hole formed at a position corresponding to the protrusion. And preparing (c) combining the impeller and the shroud by using an ultrasonic welding method, wherein the vane protrusion is inserted into the insertion hole of the shroud and fused to provide a manufacturing method of the water pump impeller assembly. do.

In addition, the upper portion of the insertion hole formed in the shroud body of the water pump impeller assembly according to the present invention may be formed to have a concave shape, a plurality of protrusions may be formed on the upper portion of the vane, the body of the shroud A plurality of insertion holes may be formed at positions corresponding to the plurality of protrusions, and the impeller and the shroud may be formed of an engineering plastic material.

The method of manufacturing the water pump impeller assembly according to the present invention has the following effects.

First, by using the engineering plastic injection method that can maximize the design freedom of the impeller vanes, it is possible to reduce the hydraulic loss of the cooling water in the water pump impeller assembly, thereby reducing the power consumption of the water pump to increase the performance and efficiency of the water pump. Can be.

Secondly, by forming an upper portion of the insertion hole of the shroud into which the protrusions formed in the vane are inserted into a concave shape, it is possible to increase the adhesive force between the vane and the shroud through the ultrasonic fusion method, and to prevent burrs generated during the bonding.

Third, the cost of the product can be reduced by the strong adhesion by the ultrasonic welding method without the need for the adhesive, and the surface of the product is clean without deformation and alteration.

1 is an exploded perspective view of a conventional water pump impeller.
2 is a perspective view of a water pump impeller assembly according to an embodiment of the present invention.
3 is a partial cutaway plan view of the water pump impeller assembly shown in FIG. 2.
4 is an exploded perspective view of the impeller assembly manufactured by the method of manufacturing the water pump impeller assembly shown in FIG. 2.
5 is a cross-sectional view showing a coupling form of the shroud and the vane of the water pump impeller assembly shown in FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 to 5, a method of manufacturing a water pump impeller assembly according to an embodiment of the present invention includes (a) a disc 110 having a through hole 112 formed in the center of the disc 110 and the disc 110. Preparing an impeller 100 having a plurality of vanes 120 having radially disposed on one side with an inclination angle around the through hole 112, the upper portion having a protrusion 122 protruding upward. And, (b) a circular hole 210 is formed in the center, a plurality of slits 220 are formed in a spiral on the lower surface coupled to the vanes 120, the body corresponding to the protrusions 122 And preparing a shroud 200 having an insertion hole 230 formed therein, and (c) coupling the impeller 100 and the shroud 200 using an ultrasonic welding method.

The impeller 100 and the shroud 200 are formed of an engineering plastic material. The engineering plastics are stronger in strength, elasticity, impact, abrasion, and fatigue than conventional plastics, have excellent electrical conductivity, and are highly functional resins of a polymer structure and are widely used as industrial materials or structural materials. Since the engineering plastic is a polymer material, suitable structural strength, elasticity, hardness, elongation, density, and moldability can be obtained.

The impeller 100 includes a disc 110 and a plurality of vanes 120 disposed radially with respect to the through hole 112 formed in the disc 110 on one side of the disc 110.

A through hole 112 is formed at the center of the disc 110, and a protrusion 122 having a predetermined height and diameter is formed at an upper portion of the vane 120. A plurality of protrusions 122 may be formed on the top of the vanes 120, and as the number of the protrusions 122 increases, the adhesion between the impeller 100 and the shroud 200 increases. .

The vane 120 disposed radially about the through hole 112 at one side of the disc 110 of the impeller 100 is formed to have a suction angle 124 and an exit angle 126.

The vane suction angle 124 is a point where the vane 120 and the circular hole 210 of the shroud 200 into which the coolant flows, and the tangent of the vane 120 and the inclination angle of the vane 120 are 20 It is preferable that it is formed between ° ~ 30 °.

The vane exit angle 126 is a tangent of the disc 110 and the inclination angle of the vane 120 on the basis of the point where the outer surface of the disc 110 and the vane 120 meets the impeller 100 is 20 ° ~ 30 It is preferably formed between °.

The thickness of the vane 120 is preferably formed to go to the outer circumferential surface starting from the side of the through hole 112, but is not limited thereto, and may be formed to become thinner and thinner while going to the outer circumferential surface.

The shroud 200 is formed with a circular hole 210, a plurality of slits 220, and a plurality of insertion holes 230. The circular hole 210 is formed in the center of the body of the shroud 200, the cooling water flowing into the circular hole 210 is introduced into the water pump impeller assembly according to the present invention.

The slit 220 is formed on the lower surface of the shroud 200, the slit 220 is coupled to the vane 120 formed on one side of the impeller 100, the slit 220 of The number is equal to the number of vanes 120.

A plurality of insertion holes 230 are formed in the body of the shroud 200 at positions corresponding to the protrusions 122 of the vanes 120, and the insertion holes 230 are formed in the upper part of the vanes 120. The protrusion 122 protruding to have a predetermined length and diameter is inserted.

The number of the insertion holes 230 is the same as the number of the protrusions 122 formed on the vanes 120, and the insertion holes 230 are formed on the slit 220 on the lower surface of the shroud 200. Is formed.

The upper portion of the insertion hole 230 is formed to have a concave shape, the reason for forming the upper portion of the insertion hole 230 in a concave shape, the protrusion 122 formed on the upper portion of the vane 120 is inserted After the protrusion 122 is fused to the insertion hole 230 by the ultrasonic fusion method, the protrusion 122 is fused to the insertion hole 230 in a concave shape so that the fusion area is widened to provide adhesion. It is to increase, and to prevent a burr generated when the impeller 100 and the shroud 200 are bonded, and to prevent the impeller 100 fused to the shroud 200 from falling off.

Since the locking jaws 128 and 232 are formed in the vanes 120 of the impeller 100 and the insertion holes 230 of the shroud 200, the protrusions protrude from the top of the vanes 120. When the 122 is deeply inserted into the insertion hole 230, the vanes 120 and the shroud 200 are fixed in position. In addition, the insertion hole 230 and the protrusion 122 serve to position and stiffen the welded material by the shape thereof.

The impeller 100 and the shroud 200 are each manufactured by injection molding using a mold, and then integrally bonded by ultrasonic welding. First, the impeller 100 is inserted into the insertion hole 230 of the shroud 200. By inserting the protrusion 122 formed on the vane 120, the ultrasonic vibration energy is transmitted to the shroud 200 and the vane 120 through an ultrasonic vibration device. Instantaneous frictional heat is generated in the insertion hole 230 and the protrusion 122 of the shroud 200 and the vane 120 received the ultrasonic vibration energy, and a strong molecular bond is generated here, resulting in complete fusion. Because of this, an integral impeller assembly 300 is manufactured.

The flow of the cooling water flowing in the impeller assembly 300 assembled as described above, near the outlet where the coolant flows into the impeller assembly 300, collision between the flow of the coolant and the vanes is reduced, and near the outlet where the coolant flows out. Vortex at is improved.

That is, since the impeller assembly 300 including the vanes 120 having optimized shapes and angles may minimize hydraulic losses in the impeller, the performance and efficiency of the water pump may be increased. In addition, by installing the shroud 200 on the front of the impeller 100, it is possible to reduce the leakage loss of the vane (120).

Since the impeller assembly 300 manufactured by the ultrasonic welding method as described above optimizes the shape of the vane 120 of the impeller 100 by using an engineering injection method, collision and flow occurring between the vane 120 and the coolant flow. It reduces the hydraulic loss caused by the vortex inside, and because the protrusion 122 is formed on the vane 120 of the impeller 100 and then bonded through the shroud 200 and the ultrasonic fusion method, the adhesion is strong, fusion It can suppress post burr generation.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100 impeller 110 disc
112: through hole 120: vane
122: protrusion 124: vane suction angle
126: vane exit angle 128: locking jaw
200: shroud 210: round hole
220: slit 230: insertion hole
232: locking jaw 300: impeller assembly

Claims (4)

(a) an impeller having a disk having a through hole formed at the center thereof and radially disposed at one side of the disk with an inclination angle with respect to the through hole, and having a plurality of vanes having protrusions protruding upward from an upper part thereof; Preparing;
(B) a circular hole is formed in the center, a plurality of slits are formed spirally on the lower surface to be coupled to the vanes, the body has a shroud having an insertion hole formed in a position corresponding to the protrusion;
(c) combining the impeller and the shroud using an ultrasonic fusion method;
The vane protrusion is inserted into the insertion hole of the shroud fusion method of manufacturing a water pump impeller assembly.
The method according to claim 1,
The top of the insertion hole formed in the body of the shroud is a manufacturing method of the water pump impeller assembly is formed to have a concave shape.
The method according to claim 1,
A plurality of protrusions are formed on the top of the vane, and a plurality of insertion holes are formed in the body of the shroud corresponding to the plurality of protrusions.
The method according to claim 1,
The impeller and the shroud is a manufacturing method of the water pump impeller assembly is formed of an engineering plastic material.
KR20100127607A 2010-12-14 2010-12-14 Method for manufacturing water pump impeller assembly KR101185717B1 (en)

Priority Applications (1)

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KR20100127607A KR101185717B1 (en) 2010-12-14 2010-12-14 Method for manufacturing water pump impeller assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR20100127607A KR101185717B1 (en) 2010-12-14 2010-12-14 Method for manufacturing water pump impeller assembly

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KR20120066329A true KR20120066329A (en) 2012-06-22
KR101185717B1 KR101185717B1 (en) 2012-09-24

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128703A (en) * 2014-07-23 2014-11-05 宁波飞图自动技术有限公司 Automatic welding system and welding method
KR20190121587A (en) * 2018-04-18 2019-10-28 한화파워시스템 주식회사 Rotor assembly
KR20200004710A (en) * 2018-07-04 2020-01-14 엘지전자 주식회사 Drain pump
CN113843493A (en) * 2021-09-26 2021-12-28 苏州朗坤自动化设备股份有限公司 Axial impeller fusing machine of cross flow fan
KR102392575B1 (en) * 2021-10-19 2022-04-29 주식회사 대영파워펌프 Assembled impeller for pump
KR102420633B1 (en) * 2021-03-17 2022-07-13 김철수 Turbofan made by injection molding method

Families Citing this family (3)

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WO2015163925A1 (en) * 2014-04-25 2015-10-29 Computer Assisted Manufacturing Technology Corporation Dba Camtech Systems and methods for manufacturing a shrouded impeller
US9091277B1 (en) 2014-04-25 2015-07-28 Computer Assisted Manufacturing Technology Corporation Systems and methods for manufacturing a shrouded impeller
CN113586512B (en) 2015-09-30 2023-12-26 浙江三花汽车零部件有限公司 Rotor assembly and electrically driven pump

Family Cites Families (1)

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JP4237731B2 (en) 2005-05-31 2009-03-11 株式会社日立製作所 Motor-integrated internal gear pump, method for manufacturing the same, and electronic device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128703A (en) * 2014-07-23 2014-11-05 宁波飞图自动技术有限公司 Automatic welding system and welding method
KR20190121587A (en) * 2018-04-18 2019-10-28 한화파워시스템 주식회사 Rotor assembly
KR20200004710A (en) * 2018-07-04 2020-01-14 엘지전자 주식회사 Drain pump
KR102420633B1 (en) * 2021-03-17 2022-07-13 김철수 Turbofan made by injection molding method
CN113843493A (en) * 2021-09-26 2021-12-28 苏州朗坤自动化设备股份有限公司 Axial impeller fusing machine of cross flow fan
KR102392575B1 (en) * 2021-10-19 2022-04-29 주식회사 대영파워펌프 Assembled impeller for pump

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