KR20230024737A - Impeller assembly - Google Patents

Impeller assembly Download PDF

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Publication number
KR20230024737A
KR20230024737A KR1020210106844A KR20210106844A KR20230024737A KR 20230024737 A KR20230024737 A KR 20230024737A KR 1020210106844 A KR1020210106844 A KR 1020210106844A KR 20210106844 A KR20210106844 A KR 20210106844A KR 20230024737 A KR20230024737 A KR 20230024737A
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KR
South Korea
Prior art keywords
impeller
bush
screw
shaft
thrust
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KR1020210106844A
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Korean (ko)
Inventor
김범기
김도연
김혜연
정우진
Original Assignee
지엠비코리아 주식회사
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Priority to KR1020210106844A priority Critical patent/KR20230024737A/en
Publication of KR20230024737A publication Critical patent/KR20230024737A/en

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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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • 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
    • F04D29/20—Mounting rotors on shafts

Abstract

The present invention relates to an impeller assembly, and more specifically, to an impeller assembly for a water pump, which can decrease thrust of a water pump. The impeller assembly according to the present invention comprises: an impeller having a head unit provided with a shroud, a vane, and a disc, and a body unit into which a shaft is inserted and which is extended from the lower portion of the head unit to generate rotating force; and a bush which is coupled to the inner circumferential surface of the body unit to reduce rotation friction against the shaft, and into which the shaft is inserted. At the bush, a screw is formed on the inner circumferential surface in a direction in which thrust generated upon the rotation of the impeller may be decreased. According to the present invention, a screw is formed in the bush, such that, when the bush is rotated along with the impeller, a coolant flows within the screw. Here, the screw is formed such that a load may be applied in a direction opposite to the thrust of the impeller by means of the coolant when the bush is rotated, thereby decreasing the thrust of the impeller. Therefore, friction between the impeller and the impeller cover may be reduced.

Description

워터펌프용 임펠러 조립체{Impeller assembly}Impeller assembly for water pump {Impeller assembly}

본 발명은 임펠러 조립체에 대한 것으로서, 더욱 상세하게는 워터펌프의 추력을 감소시킬 수 있는 워터펌프용 임펠러 조립체에 관한 것이다. The present invention relates to an impeller assembly, and more particularly, to an impeller assembly for a water pump capable of reducing thrust of the water pump.

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 in 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 cooling water.

도 3은 종래의 임펠러 조립체의 개념도를 도시한 것으로 종래의 임펠러 조립체(1)의 경우, 부시(5)는 임펠러(3)의 내주면에 결합되어 샤프트가 삽입되어 진다. 워터펌프의 구동시, 임펠러 조립체(1)는 흡입구와 토출구의 수압차로 인하여 추력이 발생된다. 추력으로 인하여 임펠러(1)가 상승하게 되므로 임펠러(1)와 임펠러커버 사이에 마찰이 발생되어 효율이 저하된다는 문제점이 있었다. 3 is a conceptual diagram of a conventional impeller assembly. In the case of the conventional impeller assembly 1, the bush 5 is coupled to the inner circumferential surface of the impeller 3 and the shaft is inserted. When the water pump is driven, thrust is generated in the impeller assembly 1 due to a water pressure difference between the suction port and the discharge port. Since the impeller 1 rises due to the thrust, friction is generated between the impeller 1 and the impeller cover, resulting in reduced efficiency.

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 워터펌프의 임펠러에 발생하는 추력을 감소시킬 수 있는 워터펌프용 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 for a water pump capable of reducing thrust generated in the impeller of the water pump.

본 발명에 따른 임펠러 조립체는 슈라우드와 베인과 원판을 구비한 머리부와 샤프트가 삽입되며 상기 머리부의 하부에서 연장되어 회전력을 발생시키는 몸통부를 구비한 임펠러와, 상기 샤프트와의 회전마찰을 줄이기 위하여 상기 몸통부의 내주면에 결합되어 상기 샤프트가 삽입되는 부시를 포함하며, 상기 부시는 내주면에 상기 임펠러의 회전시 발생하는 추력을 감소시킬 수 있는 방향으로 스크류가 형성된다. An impeller assembly according to the present invention includes a head portion having a shroud, vanes, and discs, and an impeller having a body portion extending from a lower portion of the head portion and generating a rotational force, into which a shaft is inserted, and to reduce rotational friction between the shaft and the shaft. It is coupled to an inner circumferential surface of the body and includes a bush into which the shaft is inserted, and a screw is formed on the inner circumferential surface in a direction capable of reducing thrust generated when the impeller rotates.

본 발명에 의하면, 부시 내부에 스크류가 형성되므로 임펠러와 함께 부시가 회전하면 스크류 내부에서 냉각수가 유동한다. 이때, 부시가 회전시 냉각수에 의하여 임펠러의 추력과 반대방향으로 하중이 작용하도록 스크류가 형성되므로 임펠러의 추력을 감소시킬 수 있다. 그래서 임펠러와 임펠러커버의 마찰을 감소시킬 수 있다. According to the present invention, since the screw is formed inside the bush, cooling water flows inside the screw when the bush rotates together with the impeller. At this time, since the screw is formed so that the load is applied in the opposite direction to the thrust of the impeller by the cooling water when the bush rotates, the thrust of the impeller can be reduced. Thus, friction between the impeller and the impeller cover can be reduced.

도 1은 본 발명에 따른 임펠러 조립체의 일 실시예의 단면도이고,
도 2는 도 1에 도시된 실시예의 임펠러 조립체가 캔에 결합된 단면도이다.
도 3은 종래의 임펠러 조립체이 개념도이다. 1 is a cross-sectional view of one embodiment of an impeller assembly according to the present invention;
2 is a cross-sectional view of the impeller assembly of the embodiment shown in FIG. 1 coupled to a can.
3 is a conceptual diagram of a conventional impeller assembly.

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

본 발명에 따른 임펠러 조립체는 임펠러(10)와 부시(20)를 포함한다. An impeller assembly according to the present invention includes an impeller 10 and a bush 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(30)가 삽입되며, 머리부(11)의 하부에서 연장되어 회전력을 발생시킨다. The impeller 10 has a head part 11 and a body part 17. The head portion 11 includes a shroud 12, vanes 14, and discs 16. The body portion 17 is inserted with the shaft 30 and extends from the lower portion of the head portion 11 to generate rotational force.

부시(20)는 샤프트(30)와의 회전마찰을 줄이는 역할을 한다. 이를 위하여 부시(20)는 샤프트(30)가 삽입되며, 몸통부(17)의 내주면에 결합된다. 이때, 부시(20)는 내주면에 임펠러(10)의 회전시 발생하는 추력을 감소시킬 수 있는 방향으로 스크류(21)가 형성된다. The bush 20 serves to reduce rotational friction with the shaft 30. To this end, the bush 20 is inserted into the shaft 30 and coupled to the inner circumferential surface of the body portion 17 . At this time, a screw 21 is formed on the inner circumferential surface of the bush 20 in a direction capable of reducing thrust generated when the impeller 10 rotates.

본 실시예의 경우, 부시(20)는 내주면에 스크류(21)가 형성되어 임펠러(10)의 몸통부(17)의 내주면에 결합된다. 워터펌프의 구동시, 임펠러(10)는 흡입구와 토출구의 수압차로 인하여 추력이 발생된다. 종래에는 추력으로 인하여 임펠러(3)가 상승하게 되므로 임펠러(3)와 임펠러커버 사이에 마찰이 발생되어 효율이 저하된다는 문제가 있었다. 반면, 본 실시예에 의하면, 부시(20)의 내주면에 스크류(21)가 형성되므로 임펠러(10)와 함께 부시(20)가 회전하면, 스크류(21) 내부에서 냉각수가 유동하게 된다. 이때, 부시(20)가 회전시 냉각수에 의하여 임펠러(10)의 추력과 반대방향으로 하중이 작용하도록 스크류(21)가 형성되므로 임펠러(10)의 추력을 감소시킬 수 있다. 그래서 임펠러(10)와 임펠러커버의 마찰을 감소시킬 수 있다. In the case of the present embodiment, the bush 20 has a screw 21 formed on the inner circumferential surface and coupled to the inner circumferential surface of the body portion 17 of the impeller 10. When the water pump is driven, thrust is generated in the impeller 10 due to a water pressure difference between the suction port and the discharge port. Conventionally, since the impeller 3 rises due to the thrust, friction is generated between the impeller 3 and the impeller cover, resulting in reduced efficiency. On the other hand, according to the present embodiment, since the screw 21 is formed on the inner circumferential surface of the bush 20, when the bush 20 rotates together with the impeller 10, the cooling water flows inside the screw 21. At this time, since the screw 21 is formed so that the load is applied in the opposite direction to the thrust of the impeller 10 by the cooling water when the bush 20 rotates, the thrust of the impeller 10 can be reduced. Thus, friction between the impeller 10 and the impeller cover can be reduced.

1 : 임펠러 조립체 3 : 임펠러
5 : 부시 10 : 임펠러
11 : 머리부 12 : 슈라우드
14 : 베인 16 : 원판
17 : 몸통부 20 : 부시
21 : 스크류 30 : 샤프트1: impeller assembly 3: impeller
5: Bush 10: Impeller
11: head 12: shroud
14: Bane 16: Disc
17: body part 20: bush
21: screw 30: shaft

Claims (1)

슈라우드와 베인과 원판을 구비한 머리부와, 샤프트가 삽입되며 상기 머리부의 하부에서 연장되어 회전력을 발생시키는 몸통부를 구비한 임펠러와,
상기 샤프트와의 회전마찰을 줄이기 위하여 상기 몸통부의 내주면에 결합되어 상기 샤프트가 삽입되는 부시를 포함하며,
상기 부시는 내주면에 상기 임펠러의 회전시 발생하는 추력을 감소시킬 수 있는 방향으로 스크류가 형성되는 것을 특징으로하는 워터펌프용 임펠러 조립체. An impeller having a head portion having a shroud, vanes, and discs, and a body portion into which a shaft is inserted and extending from a lower portion of the head portion to generate rotational force;
A bush coupled to an inner circumferential surface of the body portion to reduce rotational friction with the shaft and into which the shaft is inserted,
Impeller assembly for a water pump, characterized in that the screw is formed on the inner circumferential surface of the bush in a direction capable of reducing thrust generated during rotation of the impeller.
KR1020210106844A 2021-08-12 2021-08-12 Impeller assembly KR20230024737A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101627472B1 (en) 2015-11-13 2016-06-03 지엠비코리아 주식회사 Impeller assembly and manufacturing method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101627472B1 (en) 2015-11-13 2016-06-03 지엠비코리아 주식회사 Impeller assembly and manufacturing method thereof

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