KR20020036868A - Impeller of water pump - Google Patents

Impeller of water pump Download PDF

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Publication number
KR20020036868A
KR20020036868A KR1020000066926A KR20000066926A KR20020036868A KR 20020036868 A KR20020036868 A KR 20020036868A KR 1020000066926 A KR1020000066926 A KR 1020000066926A KR 20000066926 A KR20000066926 A KR 20000066926A KR 20020036868 A KR20020036868 A KR 20020036868A
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KR
South Korea
Prior art keywords
impeller
stage
stage impeller
engine
temperature
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KR1020000066926A
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Korean (ko)
Inventor
하명구
Original Assignee
이계안
현대자동차주식회사
류정열
기아자동차주식회사
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Application filed by 이계안, 현대자동차주식회사, 류정열, 기아자동차주식회사 filed Critical 이계안
Priority to KR1020000066926A priority Critical patent/KR20020036868A/en
Publication of KR20020036868A publication Critical patent/KR20020036868A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00Pumping cooling-air or liquid coolants
    • F01P5/10Pumping liquid coolant; Arrangements of coolant pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0055Rotors with adjustable blades
    • F04D15/0061Rotors with adjustable blades responsive to temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/24Vanes
    • F04D29/247Vanes elastic or self-adjusting

Abstract

PURPOSE: An impeller of water pump is provided to achieve improved combustion efficiency of engine by preventing engine overheat during high speed travel, while reducing emission of toxic gas during the initial start of engine. CONSTITUTION: An impeller(30) comprises a first stage impeller(31), a second stage impeller(35) and a coupling member(40). The first stage impeller includes a first stage blade(32) for applying a centrifugal force to the water coolant; and a plurality of accommodation grooves formed along the outer periphery of a shaft hole so as to accommodate the coupling member to be coupled with the second stage impeller when the water coolant has a high temperature. The first stage impeller is inserted to an end of a rotating shaft(22) so that the first stage impeller rotates together with the rotating shaft. The second stage impeller includes a second stage blade(36) having an outer diameter larger than the outer diameter of the first stage impeller, and which applies a centrifugal force to the water coolant; and a plurality of coupling holes formed along the outer periphery of a shaft hole such that the coupling holes are symmetrical to the accommodation grooves formed at the shaft hole of the first impeller. The second stage impeller is coupled to the rotating shaft. The coupling member operates to transfer the rotating force of the first stage impeller to the second stage impeller when the temperature of water coolant rises due to the high speed rotation of engine.

Description

워터펌프의 임펠러{Impeller of water pump}Impeller of water pump
본 발명은 워터펌프의 임펠러에 관한 것으로, 보다 상세하게는 엔진이 웜업시이거나 저속주행시인 경우에는 1단의 임펠러만 회전되고, 엔진이 고속주행시일 경우에는 냉각수의 온도에 따라 작동하는 키이가 연결되어 1단 임펠러와 함께 2단 임펠러가 회전되도록 하여 엔진속도에 알맞도록 냉각수를 순환시킬 수 있는 워터펌프의 임펠러에 관한 것이다.The present invention relates to an impeller of a water pump. More specifically, when the engine is warmed up or running at low speed, only one stage of the impeller is rotated, and when the engine is running at high speed, a key operated according to the temperature of the coolant is connected. It relates to an impeller of a water pump capable of circulating the coolant to match the engine speed by allowing the second stage impeller to rotate together with the first stage impeller.
일반적으로 엔진은 연료를 통과시켜 동력을 얻으며, 실린더내에서 연소되는 연소가스의 온도는 2000℃ 이상에 달하게 되나 이 연소열의 모두가 동력으로 전환되는 것은 아니고 그 중 상당량의 열이 실린더헤드 및 피스톤 등에 흡수되어 열손실을 유발하고 또 이들 부분의 과열을 일으키게 된다.Generally, the engine is powered by passing fuel, and the temperature of the combustion gas that is burned in the cylinder reaches 2000 ° C or higher, but not all of the heat of combustion is converted into power, and a considerable amount of heat is transferred to the cylinder head and the piston. Absorbed, causing heat loss and overheating of these parts.
이에 따라 실린더 등의 온도가 과도하게 상승하면 실린더에 변형을 일으키거나 또는 실린더벽의 유막을 파괴시켜 윤활불량을 초래하며, 심하면 엔진을 손상시키게 되고 또 연소상태도 나빠지는 결과 노킹이나 조기점화를 일으켜 출력을 급격히 저하시키게 된다.As a result, excessively high temperatures, such as cylinders, may cause deformation of the cylinder or damage of the oil film on the cylinder wall, resulting in poor lubrication, and severe damage to the engine and worsening of combustion, resulting in knocking and premature ignition. The output will be drastically reduced.
이에 따라 엔진의 과열을 방지코자 엔진을 냉각하게 되는데 반대로 엔진이 너무 냉각되면 연소에 의해 생긴 열이 동력으로 전환되지 못하고 냉각으로 상실되는 양이 많아져 열효율을 저하시켜 연료소비를 증대시키게 되며, 또 가솔린의 무화가 불충분한 혼합기가 엔진에 공급되어 가솔린에 의해 엔진오일을 묽게 만들어 실린더의 마모를 촉진하게 된다.As a result, the engine is cooled to prevent overheating of the engine. On the contrary, if the engine is too cooled, the heat generated by combustion cannot be converted into power, and the amount of loss due to cooling is increased, thereby lowering thermal efficiency and increasing fuel consumption. A gasoline insufficiency mixer is supplied to the engine to dilute the engine oil by gasoline to promote cylinder wear.
이 때문에 엔진을 냉각하여 과열을 방지하되 적온으로 유지되도록 하는 냉각시스템이 엔진에 사용되고 있으며, 통상 도 4에 도시하는 것과 같이 실린더와 연소실을 둘러싸는 워터재킷(1), 물을 실린더로 압송순환시키는 워터펌프(10), 엔진을 냉각하여 온도가 높아진 냉각수의 열을 외기에 전달하여 냉각하는 라디에이터(2), 라디에이터의 통풍을 돕는 냉각팬(3)을 포함하는 수냉식 냉각장치(4)가 주로 사용되고 있다.For this reason, a cooling system that cools the engine to prevent overheating and keeps it at a constant temperature is used in the engine. As shown in FIG. 4, the water jacket 1 surrounding the cylinder and the combustion chamber and the water circulating through the cylinder A water-cooled chiller (4) including a water pump (10), a radiator (2) that cools the engine to transfer heat of coolant whose temperature has risen to the outside, and cools it, and a cooling fan (3) that helps ventilate the radiator is mainly used. have.
이 수냉식 냉각장치(4)에는 서모스탯(5)이라는 냉각수온에 따라 냉각수의 흐름을 변경하는 장치가 마련되어 있어, 엔진의 온도가 낮은 시동초기에는 냉각수가 방열 냉각을 위해 라디에이터(2) 측으로 흐르지 않고 바이패스관로(6)을 통해 다시 엔진을 순환토록 하므로서 엔진의 온도를 신속하게 정상온도로 상승시키게 되며, 엔진이 정상온도에 이르면 엔진과열을 방지하기 위하여 냉각수온에 추종하여 서모스탯(5)이 열리게 되므로서 냉각수가 라디에이터(2)로 순환하여 방열 냉각된 후 엔진을 순환하여 적온을 유지하게 된다.The water-cooled cooling device (4) is provided with a device for changing the flow of the cooling water in accordance with the temperature of the cooling water, called the thermostat (5) .In the beginning of the low temperature of the engine, the cooling water does not flow to the radiator (2) side for heat radiation cooling By allowing the engine to circulate again through the bypass pipe (6), the temperature of the engine is quickly raised to the normal temperature. When the engine reaches the normal temperature, the thermostat (5) follows the cooling water temperature to prevent the engine from overheating. Since the cooling water is circulated to the radiator 2 to be opened, the heat dissipation is cooled, and the engine is circulated to maintain the temperature.
냉각수를 강제순환하는 워퍼펌프(10)는 도 5와 같이 펌프하우징(11), 임펠러(12), 회전축(13), 베어링(14), 풀리(15) 등으로 구성된다.The warp pump 10 for forced circulation of the cooling water is composed of a pump housing 11, an impeller 12, a rotation shaft 13, a bearing 14, a pulley 15, and the like.
또한, 상기한 임펠러(12)의 측면에는 냉각수를 강제순환하기 위한 블레이드(16)가 형성되어 있어서, 블레이드(16)가 형성된 임펠러(12)가 회전하면서 냉각수가 와류를 일으키며 순환되도록 구성되어 있다.In addition, the side of the impeller 12 is formed with a blade 16 for forced circulation of the cooling water, the impeller 12 having the blade 16 is configured to circulate while causing the cooling water to vortex while rotating.
즉, 엔진이 웜업시이거나 저속주행시일 경우에는 워터펌프의 회전속도를 늦쳐 냉각수의 공급을 적게 하여 순환되는 냉각수의 양을 줄여야 하며, 엔진이 고속주행시일 경우에는 워터펌프의 회전속도를 높여 많은 양의 냉각수를 실린더블럭으로 순환시켜야 한다.In other words, if the engine is warmed up or running at low speed, the rotation speed of the water pump should be slowed down to reduce the amount of coolant circulated by reducing the supply of cooling water.In the case of the engine running at high speed, the amount of cooling water should be increased by increasing the rotation speed of the water pump. Should be circulated to the cylinder block.
그러나 상기와 같은 종래의 워터펌프의 경우에는 회전축의 회전에 따라 일체로 형성된 하나의 임펠러 만이 냉각수를 펌핑하게 되므로서 엔진초기 및 고속주행시에 알맞는 양의 냉각수를 순환시키는 데에 한계점이 있어 엔진속도에 맞는 냉각효과를 이룰 수 없다는 문제점이 있었다.However, in the case of the conventional water pump as described above, only one impeller integrally formed with the rotation of the rotating shaft pumps the coolant, and thus there is a limit in circulating the appropriate amount of coolant at the initial and high speed driving. There was a problem that can not achieve the cooling effect.
따라서 본 발명은 상기한 문제점을 해결하기 위하여 안출된 것으로서, 보다 상세하게는 엔진이 웜업시이거나 저속주행시인 경우에는 1단의 임펠러만 회전되고, 엔진이 고속주행시일 경우에는 냉각수의 온도에 따라 작동하는 키이가 연결되어 1단 임펠러와 함께 2단 임펠러가 회전되도록 하여 엔진속도에 알맞도록 냉각수를 순환시킬 수 있는 워터펌프의 임펠러를 제공하는 데 목적이 있다.Therefore, the present invention has been made to solve the above problems, more specifically, when the engine is warm-up or low-speed driving, only one stage of the impeller is rotated, when the engine is running at high speed operating in accordance with the temperature of the coolant It is an object of the present invention to provide an impeller of a water pump capable of circulating a coolant to match an engine speed by connecting a key so that a second stage impeller is rotated together with a first stage impeller.
본 발명은 상기와 같은 목적을 달성하기 위한 수단으로서,The present invention as a means for achieving the above object,
워터펌프의 회전축에 축삽되어 냉각수에 원심력을 가해 실린더헤드 측으로 순환시키는 임펠러에 있어서,In the impeller is inserted into the rotation shaft of the water pump to circulate toward the cylinder head by applying centrifugal force to the cooling water,
일측에 냉각수에 원심력을 가하는 1단 블레이드가 형성되고, 냉각수의 온도가 고온일 때 2단 임펠러와 결합하기 위한 결합수단이 수용되는 수용홈이 축공의 외주에 다수 형성되며, 회전축과 함께 회동되도록 상기 회전축의 일측단에 축삽되는 1단 임펠러와;The first stage blade is formed on one side to apply the centrifugal force to the cooling water, and a plurality of receiving grooves are formed on the outer circumference of the shaft hole to accommodate the coupling means for coupling with the second stage impeller when the temperature of the cooling water is high temperature, so as to rotate together with the rotating shaft. A first stage impeller inserted into one end of the rotating shaft;
외경이 상기한 1단 임펠러의 외경보다 크며 일측에 냉각수에 원심력을 가하는 2단 블레이드가 형성되고, 축공의 외주에 상기 수용홈과 대칭되도록 결합공이다수 형성되며, 1단 임펠러의 외측면에 베어링에 의해 공회전될 수 있도록 회전축에 축결합되는 2단 임펠러와;The outer diameter is larger than the outer diameter of the first stage impeller and a two stage blade is formed on one side to apply centrifugal force to the coolant, and a number of coupling holes are formed on the outer circumference of the shaft hole so as to be symmetrical with the receiving groove. A two-stage impeller axially coupled to the rotating shaft so as to be idle by;
엔진이 고속회전하여 냉각수의 온도가 상승할 경우, 상기한 1단 임펠러의 회전력을 2단 임펠러에 전달하기 위해 가동되는 결합수단; 으로 구성되는 것을 특징으로 하며,When the engine is rotated at a high speed to increase the temperature of the coolant, the coupling means is operated to transfer the rotational force of the first stage impeller to the second stage impeller; Characterized in that consists of,
상기한 결합수단은 1단 임펠러 수용홈의 일측에 채워져 냉각수의 온도가 상승하면 팽창되는 왁스체와, 왁스체가 팽창하면 가동되도록 스프링에 의해 탄력지지되는 로드로 형성되는 것을 특징으로 한다.The coupling means is filled with one side of the first impeller receiving groove is characterized in that it is formed of a wax body that is expanded when the temperature of the cooling water rises, the rod is elastically supported by the spring to operate when the wax body is expanded.
도 1은 본 발명에 의해 구성된 워터펌프의 단면도.1 is a cross-sectional view of a water pump constructed by the present invention.
도 2는 본 발명에 의한 워터펌프 임펠러의 확대단면도.Figure 2 is an enlarged cross-sectional view of the water pump impeller according to the present invention.
도 3은 본 발명에 의한 임펠러의 작동상태도.Figure 3 is an operating state of the impeller according to the present invention.
도 4는 종래기술을 설명하기 위한 도면.Figure 4 is a view for explaining the prior art.
도 5는 종래 워터펌프의 단면도.5 is a cross-sectional view of a conventional water pump.
※ 도면의 주요부분에 대한 부호의 설명※ Explanation of code for main part of drawing
20 : 워터펌프 21 : 하우징20: water pump 21: housing
22 : 회전축 23 : 풀리22: axis of rotation 23: pulley
30 : 임펠러 31 : 1단 임펠러30: impeller 31: first stage impeller
32 : 1단 블레이드 33 : 수용홈32: 1st stage blade 33: receiving groove
35 : 2단 임펠러 36 : 2단 블레이드35: two-stage impeller 36: two-stage blade
37 : 결합공 39 : 베어링37: coupling hole 39: bearing
40 : 결합수단 41 : 왁스체40: bonding means 41: wax body
42 : 로드 43 : 스프링42: rod 43: spring
본 발명의 구성과 작동에 따른 실시예를 첨부한 도면과 함께 상세히 설명하면 다음과 같다.DETAILED DESCRIPTION OF THE EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with the accompanying drawings.
도 1은 본 발명에 의해 구성된 워터펌프의 단면도이며, 도 2는 본 발명에 의한 워터펌프 임펠러의 확대단면도이며, 도 3은 본 발명에 의한 임펠러의 작동상태도로서, 도면중에 표시된 도면부호 20은 본 발명에 의해 구성된 워터펌프이다.1 is a cross-sectional view of a water pump constructed by the present invention, Figure 2 is an enlarged cross-sectional view of the water pump impeller according to the present invention, Figure 3 is an operating state diagram of the impeller according to the present invention, the reference numeral 20 shown in the drawing It is a water pump constructed by the invention.
상기한 워터펌프(20)의 하우징(21)은 종래와 같이 볼트에 의해 실린더블럭의 일측면에 장착될 수 있도록 구성되며, 이 하우징(21)의 중심부에 크랭크축의 회전력을 전달받는 풀리(23)가 형성된 회전축(22)이 축결합된다. 하우징(21)의 축수부에는 회전축(22)의 원활한 회전을 위한 베어링(24)이 형성되며, 냉각수가 하우징(21) 외부로 유출되는 것을 방지하기 위해 실링(25)이 종래와 같이 형성된다.The housing 21 of the water pump 20 is configured to be mounted on one side of the cylinder block by a bolt as in the prior art, the pulley 23 receiving the rotational force of the crankshaft in the center of the housing 21 The rotating shaft 22 is formed is coupled shaft. A bearing 24 for smooth rotation of the rotating shaft 22 is formed in the bearing portion of the housing 21, and a seal 25 is formed as in the related art to prevent cooling water from flowing out of the housing 21.
그리고 하우징(21)의 내측에 위치하는 회전축(22)의 일단에는 회전하며 냉각수에 원심력을 가하는 임펠러(30)가 형성되는데, 상기 임펠러(30)는 종래와는 다르게 2단 구조인 1단 임펠러(31)와 2단 임펠러(35)로 형성된다.In addition, an impeller 30 is formed at one end of the rotating shaft 22 positioned inside the housing 21 to apply centrifugal force to the coolant. The impeller 30 is a one-stage impeller having a two-stage structure unlike the related art. 31) and a two-stage impeller (35).
상기 1단 임펠러(31)의 일측에는 1단 블레이드(32)가 형성되며 축공(34)의 외주에는 결합수단(40)을 수용하기 위한 수용홈(33)이 다수 형성되고, 상기 2단 임펠러(35)의 일측에는 2단 블레이드(26)가 형성되며 축공(38)의 외주에는 수용홈(33)의 위치에 일치되도록 결합공(37)이 형성된다.One side of the first stage impeller 31 is formed with a first stage blade 32, the outer periphery of the shaft hole 34 is formed with a plurality of receiving grooves 33 for receiving the coupling means 40, the second stage impeller ( Two-sided blade 26 is formed on one side of the 35 and the coupling hole 37 is formed on the outer circumference of the shaft hole 38 to match the position of the receiving groove 33.
특히, 1단 임펠러(31)의 축공(34)은 회전축(22)에 고정형성되어 축과 함께 회전되며, 2단 임펠러(35)의 축공(38)은 베어링(39)이 장착된 상태로 회전축(22)에 축결합된다.In particular, the shaft hole 34 of the first stage impeller 31 is fixed to the rotating shaft 22 and rotated together with the shaft, and the shaft hole 38 of the second stage impeller 35 has the rotating shaft with the bearing 39 mounted thereon. Axially coupled to (22).
그리고 1단 임펠러(31)와 2단 임펠러(35)를 결합하는 결합수단(40)은 냉각수의 온도가 상승하면 부피가 팽창하는 왁스체(41)와, 왁스체(41)가 팽창하면 일측으로 가동되는 로드(42)로 구성된다. 즉, 1단 임펠러(31)의 수용홈(33)에 로드(42)를 스프링(43)으로 탄력지지되도록 끼워넣은 후, 수용홈(33)의 나머지 공간에 왁스체(41)를 채우고 볼트(45)로써 왁스체(41)의 기밀이 유지되도록 구성된다.And the coupling means 40 for coupling the first stage impeller 31 and the second stage impeller 35 has a wax body 41 which expands in volume when the temperature of the cooling water rises, and one side when the wax body 41 expands. It consists of a rod 42 which is movable. That is, the rod 42 is inserted into the receiving groove 33 of the first stage impeller 31 so as to be elastically supported by the spring 43, and then the wax body 41 is filled in the remaining space of the receiving groove 33 and the bolt ( 45), the airtightness of the wax body 41 is maintained.
이상과 같이 구성되는 임펠러가 장착된 워터펌프의 작동을 설명하면 다음과 같다.Referring to the operation of the water pump equipped with an impeller configured as described above are as follows.
엔진이 웜업상태이거나 저속주행시인 경우에는 실린더블럭을 순환하는 냉각수의 온도는 저온이 상태이므로 너무 급속하게 냉각수를 순환시키게 되면 엔진이 과냉되어 적절한 출력을 얻지 못하게 된다. 하지만 본 발명에 의해 구성된 워터펌프(20)의 임펠러(30)는 냉각수의 온도가 일정온도 이하일 경우에는 도 2와 같이 로드(42)가 결합공(37)에서 빠져 있게 되고, 1단 임펠러(31)만 구동되어 냉각수의 순환속도가 낮아지므로서 엔진이 과냉되는 현상을 방지하게 된다. 이때 2단 임펠러(35)의 경우에는 베어링(39)에 의해 축지되어 있으므로 공회전되어 냉각수를 펌핑하지 않게 된다. 따라서 초기 엔진 구동시에 1단 임펠러(31) 만으로 냉각수를 순환시키게 되어 냉각수의 냉각성능이 떨어져 엔진의 패스트 워업(Fast warm up)이 가능하게 되므로서, 초기 엔진 구동시에 발생하게 되는 유해한 배기가스의 발생을 최대한 억제할 수 있게 된다. 이는 일반적인 촉매의 활성화 온도는 약 350℃ 정도가 되어야 하는데, 1단 임펠러(31)만 구동하므로서 냉각수의 냉각성능을 낮추어져 빠른 시간안에 촉매의 활성화 온도가 되기 때문에 유해한 배기가스의 발생이 최대한 억제되는 것이다.When the engine is warmed up or running at low speed, the temperature of the coolant circulating in the cylinder block is at a low temperature, so if the coolant is circulated too rapidly, the engine is overcooled to obtain proper output. However, in the impeller 30 of the water pump 20 constructed by the present invention, when the temperature of the cooling water is below a predetermined temperature, the rod 42 is removed from the coupling hole 37 as shown in FIG. 2, and the first stage impeller 31 is provided. ) Is driven to lower the cooling water circulation rate, thereby preventing the engine from being overcooled. At this time, in the case of the two-stage impeller (35), it is held by the bearing (39) so that it is idle and does not pump the coolant. Therefore, the coolant is circulated only by the first stage impeller 31 at the time of initial engine driving, and thus the cooling performance of the coolant is reduced, which enables fast warm-up of the engine, thereby generating harmful exhaust gas generated during initial engine driving. Can be suppressed as much as possible. This means that the activation temperature of a general catalyst should be about 350 ° C., since only one stage of the impeller 31 is driven, the cooling performance of the cooling water is lowered, so that the activation temperature of the catalyst can be reduced within a short time. will be.
그리고 엔진이 고속주행시인 경우에는 실린더블럭을 순환하는 냉각수의 온도가 고온이 되므로서, 냉각수의 순환도 빠르게 해야만 엔진의 과열을 방지하게 된다. 이 때 실린더블럭을 순환하며 워터펌프(2) 측으로 유입되는 냉각수의 온도가 일정온도 이상이 되면 수용홈(33)에 채워진 왁스체(41)의 부피가 팽창하게 되고, 밀폐된 공간에서 왁스체(41)가 팽창되므로서 로그(42)가 스프링(43)을 가압하며 결합공(37)측으로 밀리게 된다. 1단 임펠러(31)가 회전하는 과정에서 로드(42)가 서서히 밀리게 되면서 로드(42)의 끝단이 결합공(37)에 결합된다. 즉, 2단 임펠러(35)는 1단 임펠러(31)와 함께 회전하게 되므로서 냉각수에 보다 강한 원심력을 가하게 되어 냉각효율을 높이게 된다.And when the engine is running at high speed, the temperature of the cooling water circulating the cylinder block is a high temperature, the circulation of the cooling water must also be fast to prevent overheating of the engine. At this time, when the temperature of the coolant flowing through the cylinder block and flowing into the water pump 2 reaches a predetermined temperature or more, the volume of the wax body 41 filled in the receiving groove 33 is expanded, and the wax body (in a sealed space) As the 41 is expanded, the log 42 pushes the spring 43 and is pushed toward the coupling hole 37. As the rod 42 is gradually pushed while the first stage impeller 31 rotates, the end of the rod 42 is coupled to the coupling hole 37. That is, the two-stage impeller 35 is rotated together with the first-stage impeller 31, thereby applying a stronger centrifugal force to the cooling water, thereby increasing the cooling efficiency.
따라서 엔진의 가동속도에 따라 임펠러(30)가 1단 혹은 2단으로 회전되어 엔진이 적절하게 냉각되고, 또한 엔진이 운행속도에 맞게 적절히 냉각되므로서 연료의 연소효율이 증대되어 연료의 연소후에 배출되는 유해한 배출물(Emission)의 발생을 억제하게 된다.Therefore, the impeller 30 is rotated in one or two stages according to the operating speed of the engine, so that the engine is properly cooled and the engine is properly cooled according to the running speed, thereby increasing the combustion efficiency of the fuel and discharging it after the combustion of the fuel. It is possible to suppress the generation of harmful emissions.
상기와 같은 본 발명은 엔진을 냉각하는 냉각수의 온도에 따라 작동하는 결합수단을 1단 임펠러에 장착하여 엔진이 고속회전 중일 때에는 보다 효율적인 냉각을 위해 자동으로 2단 임펠러가 가동되도록 하므로서, 고속주행시에는 엔진의 과열을 방지하기 위한 충분한 냉각을 하게 되어 엔진의 연소효율을 향상시키게 되고, 엔진 초기 시동시에는 냉각수의 냉각효율을 낮춰 촉매가 빠른 시간 안에 활성화 온도(약 350℃ 정도)로 되도록 하여 엔진 초기시에 유해가스(Emission)의 발생을 최대한 억제할 수 있는 커다란 장점이 있는 것이다.The present invention as described above is equipped with a coupling means operating in accordance with the temperature of the cooling water to cool the engine to the first stage impeller to automatically operate the second stage impeller for more efficient cooling when the engine is running at high speed, Enough cooling to prevent overheating of the engine improves the combustion efficiency of the engine.In the initial start-up of the engine, the cooling efficiency of the coolant is lowered so that the catalyst is brought to the activation temperature (about 350 ℃) in a short time. There is a great advantage that can suppress the generation of harmful gas (Emission) as much as possible.

Claims (2)

  1. 워터펌프의 회전축에 축삽되어 냉각수에 원심력을 가해 실린더헤드 측으로 순환시키는 임펠러에 있어서,In the impeller is inserted into the rotation shaft of the water pump to circulate toward the cylinder head by applying centrifugal force to the cooling water,
    일측에 냉각수에 원심력을 가하는 1단 블레이드(32)가 형성되고, 냉각수의 온도가 고온일 때 2단 임펠러(35)와 결합하기 위한 결합수단(40)이 수용되는 수용홈(33)이 축공(34)의 외주에 다수 형성되며, 회전축(22)과 함께 회동되도록 상기 회전축(22)의 일측단에 축삽되는 1단 임펠러(31)와;On one side is formed a first stage blade 32 to apply the centrifugal force to the cooling water, the receiving groove 33 is accommodated for the coupling means 40 for engaging with the second stage impeller 35 when the temperature of the cooling water is high temperature shaft ( A plurality of first stage impellers 31 formed on an outer circumference of the 34 and inserted into one end of the rotating shaft 22 so as to rotate together with the rotating shaft 22;
    외경이 상기한 1단 임펠러(31)의 외경보다 크며 일측에 냉각수에 원심력을 가하는 2단 블레이드(36)가 형성되고, 축공(37)의 외주에 상기 수용홈(33)과 대칭되도록 결합공(37)이 다수 형성되며, 1단 임펠러(31)의 외측면에 베어링(39)에 의해 공회전될 수 있도록 회전축(22)에 축결합되는 2단 임펠러(35)와;The outer diameter is larger than the outer diameter of the one-stage impeller 31 described above, and a two-stage blade 36 is formed on one side to apply centrifugal force to the coolant, and the coupling hole is symmetrical with the receiving groove 33 on the outer circumference of the shaft hole 37 ( 37 and a plurality of two-stage impeller 35 is axially coupled to the rotating shaft 22 to be idle by the bearing 39 on the outer surface of the first stage impeller 31;
    엔진이 고속회전하여 냉각수의 온도가 상승할 경우, 상기한 1단 임펠러(31)의 회전력을 2단 임펠러(35)에 전달하기 위해 가동되는 결합수단(40); 으로 구성되는 것을 특징으로 하는 워터펌프의 임펠러.When the engine is rotated at a high speed to increase the temperature of the coolant, the coupling means 40 is operated to transfer the rotational force of the first stage impeller 31 to the second stage impeller 35; Impeller of the water pump, characterized in that consisting of.
  2. 제 1 항에 있어서,The method of claim 1,
    상기한 결합수단(40)은 수용홈(33)의 일측에 채워져 냉각수의 온도가 상승하면 팽창되는 왁스체(41)와, 왁스체(41)가 팽창하면 가동되도록 스프링(43)에 의해 탄력지지되는 로드(42)로 형성되는 것을 특징으로 하는 워터펌프의 임펠러.The coupling means 40 is filled on one side of the receiving groove 33, the wax body 41 is expanded when the temperature of the cooling water rises, and is elastically supported by the spring 43 to operate when the wax body 41 is expanded Impeller of the water pump, characterized in that formed by the rod 42.
KR1020000066926A 2000-11-11 2000-11-11 Impeller of water pump KR20020036868A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160112709A (en) * 2015-03-20 2016-09-28 현대중공업 주식회사 Auxiliary system with cooling water unified pump

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160112709A (en) * 2015-03-20 2016-09-28 현대중공업 주식회사 Auxiliary system with cooling water unified pump

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