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KR102442342B1 - Impeller assembly - Google Patents

Impeller assembly Download PDF

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KR102442342B1
KR102442342B1 KR1020200136776A KR20200136776A KR102442342B1 KR 102442342 B1 KR102442342 B1 KR 102442342B1 KR 1020200136776 A KR1020200136776 A KR 1020200136776A KR 20200136776 A KR20200136776 A KR 20200136776A KR 102442342 B1 KR102442342 B1 KR 102442342B1
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impeller
bearing
shaft
impeller assembly
head
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KR20220053085A (en
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박종원
이창국
정연석
김현범
이다빈
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지엠비코리아 주식회사
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    • 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
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F05D2240/00—Components
    • F05D2240/50—Bearings
    • 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
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • 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
    • F05D2300/10—Metals, alloys or intermetallic compounds

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

Abstract

본 발명은 임펠러 조립체에 대한 것으로서, 더욱 상세하게는 열변형을 방지할 수 있는 임펠러 조립체에 관한 것이다.
본 발명에 따른 임펠러 조립체는 슈라우드와 베인과 원판을 구비한 머리부와 샤프트가 삽입되며 상기 머리부의 하부에서 연장되어 회전력을 발생시키는 몸통부를 구비한 임펠러와, 상기 샤프트와 상기 임펠러의 회전마찰을 줄이기 위하여 상기 샤프트가 삽입되며 상기 몸통부가 사출되어 결합되는 베어링을 포함하며, 상기 베어링은 내부가 관통된 링형상의 인서트물을 내부에 상기 몸통부의 길이방향을 따라 일정간격 이격하여 복수개 구비한다.
본 발명에 의하면, 베어링은 내부가 관통된 링형상의 금속으로 된 인서트물을 내부에 몸통부의 길이방향을 따라 일정간격 이격하여 복수개 구비한다. 이 경우, 사출단계 및 회전시 발생되는 마찰열에 의한 변형을 인서트물이 방지한다. 그래서 열변형으로 인한 뒤틀림을 방지할 수 있다. The present invention relates to an impeller assembly, and more particularly, to an impeller assembly capable of preventing thermal deformation.
The impeller assembly according to the present invention includes an impeller having a head and a shaft having a shroud, a vane, and a disk inserted therein and extending from a lower portion of the head to generate a rotational force, and to reduce rotational friction between the shaft and the impeller. and a bearing to which the shaft is inserted and the body part is injected and coupled, and the bearing is provided with a plurality of ring-shaped inserts having a penetration therein, spaced apart from each other at regular intervals along the longitudinal direction of the body part.
According to the present invention, the bearing is provided with a plurality of inserts made of a ring-shaped metal through which the inside is spaced apart at regular intervals along the longitudinal direction of the body. In this case, the insert prevents deformation due to frictional heat generated during the injection step and rotation. Therefore, distortion due to thermal deformation can be prevented.

Description

임펠러 조립체{Impeller assembly}Impeller assembly

본 발명은 임펠러 조립체에 대한 것으로서, 더욱 상세하게는 열변형을 방지할 수 있는 임펠러 조립체에 관한 것이다. The present invention relates to an impeller assembly, and more particularly, to an impeller assembly capable of preventing thermal deformation.

일반적으로 자동차에는 차량의 엔진 및 히터에 냉각수를 안정적으로 순환시키기 위하여 전동식 워터펌프가 설치된다. In general, an electric water pump is installed in a vehicle to stably circulate coolant to an engine and a heater of the vehicle.

전동식 워터펌프에는 임펠러 조립체가 설치되어 냉각수를 순환시킨다. An impeller assembly is installed in the electric water pump to circulate the coolant.

도 3은 종래의 임펠러 조립체의 개념도를 도시한 것으로 종래의 임펠러 조립체(1)의 경우, 임펠러(3)와 베어링(5)은 사출되어 일체형으로 제작되어 진다. 이때, 임펠러(3)와 베어링(5)은 동일한 재질로 이루어진다. 임펠러 조립체(1)는 임펠러(3)와 베어링(5)을 일체형으로 제작하기 위하여 사출하는 과정에서 열을 받거나, 또는 동작 중 샤프트와의 마찰로 과열된다. 이 경우, 임펠러 조립체(1)의 내경부의 치수가 틀어진다는 문제점이 있었다. Figure 3 shows a conceptual diagram of a conventional impeller assembly. In the case of the conventional impeller assembly 1, the impeller 3 and the bearing 5 are injected and manufactured integrally. At this time, the impeller 3 and the bearing 5 are made of the same material. The impeller assembly 1 receives heat during injection to manufacture the impeller 3 and the bearing 5 integrally, or is overheated due to friction with the shaft during operation. In this case, there is a problem that the size of the inner diameter portion of the impeller assembly (1) is wrong.

등록특허 제10-1627472호 (등록일 2016.05.30)Registered Patent No. 10-1627472 (Registration Date 2016.05.30)

본 발명은 상기의 문제점을 해결하기 위한 것이다. 본 발명은 열변형을 방지할 수 있는 임펠러 조립체를 제공하는 것을 목적으로 한다. The present invention is to solve the above problems. An object of the present invention is to provide an impeller assembly capable of preventing thermal deformation.

본 발명에 따른 임펠러 조립체는 슈라우드와 베인과 원판을 구비한 머리부와 샤프트가 삽입되며 상기 머리부의 하부에서 연장되어 회전력을 발생시키는 몸통부를 구비한 임펠러와, 상기 샤프트와 상기 임펠러의 회전마찰을 줄이기 위하여 상기 샤프트가 삽입되며 상기 몸통부가 사출되어 결합되는 베어링을 포함하며, 상기 베어링은 내부가 관통된 링형상의 인서트물을 내부에 상기 몸통부의 길이방향을 따라 일정간격 이격하여 복수개 구비한다. The impeller assembly according to the present invention includes a shroud, a vane, and an impeller having a body in which a shaft is inserted and extended from a lower portion of the head to generate a rotational force, and rotational friction between the shaft and the impeller is reduced. and a bearing to which the shaft is inserted and the body part is injected and coupled, and the bearing is provided with a plurality of ring-shaped inserts having a penetration therein, spaced apart from each other at regular intervals along the longitudinal direction of the body part.

또한, 상기의 임펠러 조립체에 있어서, 상기 인서트물은 금속으로 형성되는 것이 바람직하다. In addition, in the impeller assembly, the insert is preferably formed of a metal.

본 발명에 의하면, 베어링은 내부가 관통된 링형상의 금속으로 된 인서트물을 내부에 몸통부의 길이방향을 따라 일정간격 이격하여 복수개 구비한다. 이 경우, 사출단계 및 회전시 발생되는 마찰열에 의한 변형을 인서트물이 방지한다. 그래서 열변형으로 인한 뒤틀림을 방지할 수 있다. According to the present invention, the bearing is provided with a plurality of inserts made of a ring-shaped metal through which the inside is spaced apart at regular intervals along the longitudinal direction of the body. In this case, the insert prevents deformation due to frictional heat generated during the injection step and rotation. Thus, distortion due to thermal deformation can be prevented.

도 1은 본 발명에 따른 임펠처 조립체의 일 실시예의 단면도이고,
도 2는 도 1에 도시된 실시예의 인서트물의 사시도이고,
도 3은 종래의 임펠러 조립체의 개념도이다. 1 is a cross-sectional view of an embodiment of an impeller assembly according to the present invention,
Figure 2 is a perspective view of the insert of the embodiment shown in Figure 1,
3 is a conceptual diagram of a conventional impeller assembly.

도 1 및 도 2를 참조하여 본 발명에 따른 임펠러 조립체의 일 실시예를 설명한다. An embodiment of the impeller assembly according to the present invention will be described with reference to FIGS. 1 and 2 .

본 발명에 따른 임펠러 조립체는 임펠러(10)와 베어링(20)을 포함한다. The impeller assembly according to the present invention includes an impeller 10 and a bearing 20 .

임펠러(10)는 머리부(11)와 몸통부(17)를 구비한다. 머리부(11)는 슈라우드(12)와, 베인(14)과, 원판(16)을 구비한다. 몸통부(17)는 샤프트(미도시)가 삽입되며, 머리부(11)의 하부에서 연장되어 회전력을 발생시킨다. The impeller 10 has a head 11 and a body 17 . The head 11 includes a shroud 12 , a vane 14 , and a disk 16 . The body 17 has a shaft (not shown) inserted therein, and extends from the lower portion of the head 11 to generate a rotational force.

베어링(20)은 회전시 샤프트와 임펠러(10)의 회전 마찰을 줄이는 역할을 한다. 이를 위하여 베어링(20)은 원통몸체부(21)와 인서트물(23)을 구비하며, 몸통부(17)가 사출되어 결합된다. The bearing 20 serves to reduce rotational friction between the shaft and the impeller 10 during rotation. To this end, the bearing 20 includes a cylindrical body 21 and an insert 23, and the body 17 is injected and coupled.

원통몸체부(21)는 중공의 원통형으로, 중공에 샤프트가 삽입되어 지지되며, 임펠러(10)와 동일하게 플라스틱으로 형성된다. The cylindrical body 21 has a hollow cylindrical shape, a shaft is inserted into the hollow, and is supported, and is formed of plastic in the same way as the impeller 10 .

인서트물(23)은 내부가 관통된 링형상의 금속으로 형성되어 원통몸체부(21)의 내부에 몸통부(17)의 길이방향을 따라 일정간격 이격하여 복수개가 구비된다. 본 실시예에서 인서터물(23)은 일정간격 이격하여 7개가 구비된다. 본 실시예의 경우 인서트물(23)은 단면이 'ㄱ' , 'ㄴ' 또는 'ㅇ' 으로 형성되지만, 다른 형태로 형성될 수도 있다. The insert 23 is formed of a ring-shaped metal through which the inside is penetrated, and a plurality of inserts are provided inside the cylindrical body 21 at regular intervals along the longitudinal direction of the body 17 . In this embodiment, seven inserts 23 are provided with a predetermined interval therebetween. In the case of this embodiment, the insert 23 has a cross section of 'a', 'b' or 'o', but may be formed in other shapes.

본 실시예의 경우, 베어링(20)은 임펠러(10)의 몸통부(17)와 동일한 플라스틱 재질로 형성된 몸체부(21)의 내부에 금속으로 된 인서트물(23)이 몸통부(17)의 길이방향을 따라 일정간격 이격하여 복수개가 삽입되어 형성된다. 이때, 인서트물(23)은 도 2에 도시된 바와 같이 내부가 관통된 링형상으로 형성된다. 임펠러(10)와 베어링(20)을 일체형으로 형성하기 위하여 임펠러(10)의 머리부(11)의 하부에서 연장되어 몸통부(17)가 사출되면 베어링(20)이 가열된다. 종래의 경우, 베어링(5)은 임펠러(3)와 같이 플라스틱 재질로만 형성되었다. 이 경우, 베어링(5)이 가열되어 변형이 발생하였다. 반면, 본 실시예의 경우, 베어링(20)은 원통몸체부(21)의 내부에 금속으로 된 인서트물(23)이 몸통부(17)의 길이방향을 따라 일정간격 이격하여 복수개가 삽입되어 있으므로 베어링(20)이 가열되더라도 인서트물(23)이 열변형을 방지시켜준다. 또한, 회전시 샤프트와의 마찰로 과열되더라도 인서트물(23)이 열변형을 방지시켜준다. 그래서 열변형으로 인한 뒤틀림을 방지할 수 있다. In this embodiment, the bearing 20 has a metal insert 23 inside the body 21 formed of the same plastic material as the body 17 of the impeller 10 , the length of the body 17 . It is formed by inserting a plurality of them spaced apart from each other at regular intervals along the direction. At this time, the insert 23 is formed in a ring shape through which the inside is penetrated as shown in FIG. 2 . In order to form the impeller 10 and the bearing 20 integrally, the bearing 20 is heated when the body 17 is injected by extending from the lower portion of the head 11 of the impeller 10 . In the conventional case, the bearing 5 is formed only of a plastic material like the impeller 3 . In this case, the bearing 5 was heated and deformation occurred. On the other hand, in the case of the present embodiment, the bearing 20 has a plurality of inserts 23 made of metal inside the cylindrical body 21 at regular intervals along the longitudinal direction of the body 17. Even when (20) is heated, the insert water (23) prevents thermal deformation. In addition, even if overheated due to friction with the shaft during rotation, the insert 23 prevents thermal deformation. Thus, distortion due to thermal deformation can be prevented.

1 : 임펠러 조립체 3 : 임펠러
5 : 베어링 10 : 임펠러
11 : 머리부 12 : 슈라우드
14 : 베인 16 : 원판
17 : 몸통부 20 : 베어링
21 : 원통몸체부 23(23-1,23-2,23-3,23-4) : 인서트물1: impeller assembly 3: impeller
5: bearing 10: impeller
11: head 12: shroud
14: vane 16: disc
17: body 20: bearing
21: cylindrical body 23 (23-1,23-2,23-3,23-4): insert

Claims (2)

슈라우드와 베인과 원판을 구비한 머리부와, 샤프트가 삽입되며 상기 머리부의 하부에서 연장되어 회전력을 발생시키는 몸통부를 구비한 임펠러와,
상기 샤프트와 상기 임펠러의 회전마찰을 줄이기 위하여 상기 샤프트가 삽입되며, 상기 몸통부가 사출되어 결합되는 베어링을 포함하며,
상기 베어링은 상기 임펠러와 동일한 재질로 형성되고, 상기 몸통부가 사출결합될 때 또는 회전시 발생되는 열에 의한 변형을 방지하기 위하여 내부가 관통된 링형상의 금속으로 형성된 인서트물을 내부에 상기 몸통부의 길이방향을 따라 일정간격 이격하여 복수개 구비하는 것을 특징으로 하는 임펠러 조립체. An impeller having a head having a shroud, a vane, and a disk, and a body in which a shaft is inserted and extending from a lower portion of the head to generate a rotational force;
and a bearing into which the shaft is inserted to reduce rotational friction between the shaft and the impeller, and the body part is injected and coupled;
The bearing is made of the same material as the impeller, and an insert made of a ring-shaped metal through which the inside is penetrated in order to prevent deformation due to heat generated when the body is injection-coupled or rotated is inserted into the body, the length of the body Impeller assembly, characterized in that it is provided with a plurality of spaced apart along the direction. 삭제delete
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100648637B1 (en) 2006-03-21 2006-11-23 주식회사 한국유체기계 Airfoil bearing
US20170051788A1 (en) * 2015-08-21 2017-02-23 Board Of Regents, The University Of Texas System Hybrid Foil Bearings Having Integrated Gas Flow Paths
KR101958457B1 (en) 2019-01-08 2019-03-14 김유미 Airfoil Radial Bearing with Cooling Flow Path

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100528704B1 (en) * 2005-07-20 2005-11-15 이승수 Gas Foil Journal Bearing
KR100963523B1 (en) * 2008-10-23 2010-06-14 한국기계연구원 Hybrid Air Foil Journal Bearing With External Static Pressure Source
CN106555765A (en) * 2015-09-30 2017-04-05 杭州三花研究院有限公司 electric drive pump
KR101627472B1 (en) 2015-11-13 2016-06-03 지엠비코리아 주식회사 Impeller assembly and manufacturing method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100648637B1 (en) 2006-03-21 2006-11-23 주식회사 한국유체기계 Airfoil bearing
US20170051788A1 (en) * 2015-08-21 2017-02-23 Board Of Regents, The University Of Texas System Hybrid Foil Bearings Having Integrated Gas Flow Paths
KR101958457B1 (en) 2019-01-08 2019-03-14 김유미 Airfoil Radial Bearing with Cooling Flow Path

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