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KR102463201B1 - Water-cooled egr cooler - Google Patents

Water-cooled egr cooler Download PDF

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Publication number
KR102463201B1
KR102463201B1 KR1020170171142A KR20170171142A KR102463201B1 KR 102463201 B1 KR102463201 B1 KR 102463201B1 KR 1020170171142 A KR1020170171142 A KR 1020170171142A KR 20170171142 A KR20170171142 A KR 20170171142A KR 102463201 B1 KR102463201 B1 KR 102463201B1
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South Korea
Prior art keywords
tube
water
egr cooler
housing
insertion protrusion
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Application number
KR1020170171142A
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Korean (ko)
Other versions
KR20190070540A (en
Inventor
윤성일
이동영
박도준
윤석진
윤인성
Original Assignee
현대자동차 주식회사
기아 주식회사
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Priority to KR1020170171142A priority Critical patent/KR102463201B1/en
Priority to DE102018110959.8A priority patent/DE102018110959A1/en
Publication of KR20190070540A publication Critical patent/KR20190070540A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
    • F28D7/1653—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
    • F28D7/1661—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F28D7/1692—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
    • F28F9/0268—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box in the form of multiple deflectors for channeling the heat exchange medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2235/00—Means for filling gaps between elements, e.g. between conduits within casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/16—Safety or protection arrangements; Arrangements for preventing malfunction for preventing leakage
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

수냉식 이지알 쿨러가 개시된다.
본 발명의 실시예에 따라서 배기측에서 흡기측으로 재순환되는 이지알 가스를 냉각하는 수냉식 이지알 쿨러는 하우징 안에 설정된 간격을 두고 배열되는 튜브, 상기 튜브 안쪽으로 삽입되는 핀, 상기 튜브의 단부가 삽입되고, 상기 하우징의 둘레를 따라서 접합되는 컵 플레이트, 및 컵 플레이트의 둘레를 따라서 접합되고, 이지알 가스가 들어가는 유입 통로와 이지알 가스가 배출되는 배출 통로를 나누는 플랜지 바가 일체로 형성되는 플랜지를 포함하고, 상기 플랜지 바에는 상기 튜브 안쪽으로 삽입되는 삽입 돌기가 일체로 돌출되어 형성될 수 있다. Disclosed is a water-cooled EGR cooler.
According to an embodiment of the present invention, the water-cooled EGR cooler for cooling the EGR gas recirculated from the exhaust side to the intake side is a tube arranged at a set interval in a housing, a fin inserted into the tube, and an end of the tube is inserted , a cup plate joined along the perimeter of the housing, and a flange joined along the periphery of the cup plate, wherein a flange bar that divides an inlet passage through which EGR gas enters and an outlet passage through which EGR gas is discharged is integrally formed, and , The flange bar may be formed integrally with an insertion protrusion inserted into the tube.

Description

수냉식 이지알 쿨러{WATER-COOLED EGR COOLER}Water-cooled EGR cooler {WATER-COOLED EGR COOLER}

본 발명은 배기라인에서 흡기라인으로 재순환되는 배기가스를 냉각수에 의해서 냉각시켜 엔진에서 배출되는 배기가스의 유해물질을 저감시키는 수냉식 이지알 쿨러에 관한 것이다. The present invention relates to a water-cooled EGR cooler that reduces harmful substances in exhaust gas discharged from an engine by cooling exhaust gas recirculated from an exhaust line to an intake line by cooling water.

최근 들어, 지구 온난화 등 환경문제가 거론되고 있고, 배기가스에 대한 규제가 강화되고 있는데, 특히 자동차 배기가스의 배출량에 대한 기준이 점차 강화되어 적용되고 있다. Recently, environmental issues such as global warming have been discussed, and regulations on exhaust gas are being strengthened. In particular, standards for emission of exhaust gas from automobiles have been gradually strengthened and applied.

구체적으로, EURO-6 기준으로 승용차용 디젤 엔진의 경우 NOx 의 발생량을 저감시켜야 하는데, 이에 대응하여, 자동차 관련 업체들은 배기가스 재순환 장치(EGR device), 질소 트랩(LNT: lean NOx trap) 장치, 및 선택적 촉매 환원(SCR: Selective catalyst reduction) 장치 등의 신기술을 적용하고 있다.Specifically, according to EURO-6 standards, diesel engines for passenger cars need to reduce the amount of NOx generated. and a selective catalytic reduction (SCR) device.

상기 배기가스 재순환 장치는 촉매 전단의 배기가스를 재순환시키는 고압 배기가스 재순환(High Pressure Exhaust Gas Recirculation, HP-EGR) 장치 및 촉매 후단의 배기가스를 재순환시키는 저압 배기가스 재순환(Low Pressure Exhaust Gas Recirculation, LP-EGR)를 포함할 수 있다. The exhaust gas recirculation device includes a High Pressure Exhaust Gas Recirculation (HP-EGR) device for recirculating the exhaust gas at the front of the catalyst and a Low Pressure Exhaust Gas Recirculation for recirculating the exhaust gas at the rear end of the catalyst. LP-EGR).

이 때, 재순환 배기가스를 냉각시키기 위해서 배기가스 재순환 라인에는 이지알 쿨러(EGR cooler)가 배치되며, 이러한 이지알 쿨러는 고온상태와 응축수에 대한 부식 저항성이 높은 스테인레스 재질로 만들어질 수 있다. At this time, in order to cool the recirculation exhaust gas, an EGR cooler is disposed in the exhaust gas recirculation line, and this EGR cooler may be made of a stainless material having high temperature and corrosion resistance against condensate.

그런데, 스테인레스 재질로 만들어진 이지알 쿨러는 무겁고, 열전달 효율이 낮고, 성형성이 좋지 않으며, 전체적인 부품 가격도 비싸다. 따라서, 열전달효율이 높고, 성형성이 좋으며, 부품 가격도 상대적으로 저렴한 알루미늄 재질의 이지알 쿨러에 대한 연구가 진행되고 있다. However, the EGR cooler made of stainless steel is heavy, has low heat transfer efficiency, has poor formability, and has a high overall component price. Therefore, research on an EGR cooler made of aluminum with high heat transfer efficiency, good formability, and relatively inexpensive parts is being conducted.

이러한, 알루미늄 재질의 이지알 쿨러는 핀과 튜브로 구성되는데, 이러한 핀과 튜브는 순알루미늄계(A1xxx)인 A1100 및 알루미늄-망간계(A3xxx)인 A3003이 사용될 수 있다. The EGR cooler made of aluminum is composed of fins and tubes, and these fins and tubes may be pure aluminum-based (A1xxx) A1100 and aluminum-manganese-based (A3xxx) A3003.

한편, 재순환 배기가스의 온도가 약 섭씨 550도에 이르고, 응축수 성분으로써 CI-, SO42-, NO3-등과 같은 부식성 이온이 존재하여, 알루미늄 계열의 핀 또는 튜브가 고온환경 및 부식환경에 손상될 수 있으며, 이에 고강도이면서 고 내식성의 알루미늄 판재에 대한 연구가 진행되고 있다. On the other hand, the temperature of the recirculated exhaust gas reaches about 550 degrees Celsius, and corrosive ions such as CI-, SO42-, NO3-, etc. exist as condensate components, so aluminum-based fins or tubes may be damaged in high-temperature and corrosive environments. In this regard, research on high-strength and high-corrosion-resistance aluminum plate is in progress.

특히, 한쪽 면에 이지알 가스가 공급되고 배출되는 공급통로와 배출 통로가 각각 형성된 U-타입 이지알 쿨러의 구조에서, 공급통로에서 배출 통로로 이지알 가스가 누출되어 이지알 가스의 냉각효율이 감소할 수 있다. In particular, in the structure of the U-type EGR cooler in which the supply passage and the discharge passage through which the EGR gas is supplied and discharged are formed on one side, respectively, the EGR gas leaks from the supply passage to the discharge passage, so that the cooling efficiency of the EGR gas is reduced. can decrease.

이 배경기술 부분에 기재된 사항은 발명의 배경에 대한 이해를 증진하기 위하여 작성된 것으로서, 이 기술이 속하는 분야에서 통상의 지식을 가진 자에게 이미 알려진 종래기술이 아닌 사항을 포함할 수 있다. Matters described in this background section are prepared to promote understanding of the background of the invention, and may include matters that are not already known to those of ordinary skill in the art to which this technology belongs.

대한민국 특허공개번호 10-2014-0000406Korean Patent Publication No. 10-2014-0000406

본 발명의 목적은 이지알 가스가 공급통로에서 배출 통로로 누출되는 것을 줄이거나 제거함으로써 전체적인 이지알 가스의 냉각효율을 향상시킬 수 있으며, 핀과 플랜지 바의 결합구조를 개선하여 내구성과 결합구조를 개선할 수 있는 수냉식 이지알 쿨러를 제공하는 것이다. An object of the present invention is to improve the cooling efficiency of the EGR gas as a whole by reducing or eliminating the leakage of the EGR gas from the supply passage to the discharge passage, and to improve the durability and the combined structure by improving the coupling structure of the pin and the flange bar. It is to provide a water-cooled EGR cooler that can be improved.

본 발명의 실시예에 따라서 배기측에서 흡기측으로 재순환되는 이지알 가스를 냉각하는 수냉식 이지알 쿨러는 하우징 안에 설정된 간격을 두고 배열되는 튜브, 상기 튜브 안쪽으로 삽입되는 핀, 상기 튜브의 단부가 삽입되고, 상기 하우징의 둘레를 따라서 접합되는 컵 플레이트, 및 컵 플레이트의 둘레를 따라서 접합되고, 이지알 가스가 들어가는 유입 통로와 이지알 가스가 배출되는 배출 통로를 나누는 플랜지 바가 일체로 형성되는 플랜지를 포함하고, 상기 플랜지 바에는 상기 튜브 안쪽으로 삽입되는 삽입 돌기가 일체로 돌출되어 형성될 수 있다. According to an embodiment of the present invention, the water-cooled EGR cooler for cooling the EGR gas recirculated from the exhaust side to the intake side is a tube arranged at a set interval in a housing, a fin inserted into the tube, and the end of the tube is inserted , a cup plate joined along the periphery of the housing, and a flange joined along the perimeter of the cup plate and integrally formed with a flange bar that divides an inlet passage through which EGR gas enters and an outlet passage through which EGR gas is discharged. , The flange bar may be formed integrally with an insertion protrusion inserted into the tube.

상기 핀은 상기 튜브의 내측 일면에 밀착되는 제1 부분, 상기 튜브의 내측 타면에서 상기 제1 부분과 엇갈리게 배치되는 제2 부분, 및 상기 제1 부분의 단부와 상기 제2 부분의 단부를 연결하는 제3 부분을 포함할 수 있다. The fin is a first part in close contact with the inner surface of the tube, a second portion interlaced with the first portion on the other inner surface of the tube, and connecting the end of the first portion and the end of the second portion It may include a third part.

상기 삽입 돌기의 일면은 상기 제1 부분에 밀착되고, 타면은 상기 튜브의 내측 타면에 밀착될 수 있다. One surface of the insertion protrusion may be in close contact with the first portion, and the other surface may be in close contact with the other inner surface of the tube.

상기 삽입 돌기의 측면은 상기 제3 부분에 밀착될 수 있다. A side surface of the insertion protrusion may be in close contact with the third part.

상기 튜브 사이에 배치되어 이들 사이에 일정한 간격을 유지하는 서포터를 더 포함할 수 있다. It may further include a supporter disposed between the tubes to maintain a constant distance therebetween.

상기 핀은 지그재그 형태로 절곡된 상태로 상기 튜브 안쪽으로 삽입될 수 있다. The pin may be inserted into the tube in a bent state in a zigzag shape.

상기 하우징으로 각각 연결되어 냉각수가 공급되는 공급 파이프와 냉각수가 배출되는 배출 파이프를 포함할 수 있다. Each of the housings may include a supply pipe through which the cooling water is supplied and a discharge pipe through which the cooling water is discharged.

상기 삽입 돌기는 상기 핀의 위치를 설정하도록 상기 플랜지 바에 일체로 형성될 수 있다. The insertion protrusion may be integrally formed with the flange bar to set the position of the pin.

상기 핀, 상기 튜브, 또는 상기 하우징은 알루미늄 합금으로 만들어질 수 있다. The fin, the tube, or the housing may be made of an aluminum alloy.

본 발명에 따라서, 플랜지 바에 형성된 삽입 돌기는 튜브에 삽입된 핀의 안쪽으로 삽입되어, 플랜지 바와 핀 사이의 갭통로를 제거 또는 줄임으로써 전체적인 이지알 가스의 냉각효율을 향상시킬 수 있다. According to the present invention, the insertion protrusion formed on the flange bar is inserted into the inside of the pin inserted into the tube, thereby removing or reducing the gap passage between the flange bar and the pin, thereby improving the cooling efficiency of the EGR gas as a whole.

또한, 플랜지 바에 형성된 삽입 돌기가 핀의 이동을 제한하여 상기 핀의 위치를 일정하게 배치할 수 있어 결합구조를 개선하고 내구성을 동시에 향상시킬 수 있다. In addition, since the insertion protrusion formed on the flange bar restricts the movement of the pin, the position of the pin can be uniformly arranged, thereby improving the coupling structure and improving durability at the same time.

도 1은 본 발명의 실시예에 따른 수냉식 이지알 쿨러의 일부 분해 사시도이다.
도 2는 본 발명의 실시예에 따른 수냉식 이지알 쿨러의 단면도이다.
도 3은 본 발명의 실시예에 따른 수냉식 이지알 쿨러에서 삽입 돌기, 핀, 및 튜브의 결합구조를 보여주는 정면도이다. 1 is a partially exploded perspective view of a water-cooled EGR cooler according to an embodiment of the present invention.
2 is a cross-sectional view of a water-cooled EGR cooler according to an embodiment of the present invention.
3 is a front view showing the coupling structure of the insertion protrusion, the fin, and the tube in the water-cooled GR cooler according to an embodiment of the present invention.

이하, 본 발명의 실시 예를 첨부한 도면을 참조하여 상세하게 설명한다. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

단, 도면에서 나타난 각 구성의 크기 및 두께는 설명의 편의를 위해 임의로 나타내었으므로, 본 발명이 반드시 도면에 도시된 바에 한정되지 않으며, 여러 부분 및 영역을 명확하게 표현하기 위하여 두께를 확대하여 나타내었다. 또한, 본 발명의 실시 예를 명확하게 설명하기 위하여 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 동일 또는 유사한 구성요소에 대해서는 동일한 도면부호를 부여하여 설명한다. 하기의 설명에서 구성의 명칭을 제1, 제2 등으로 구분한 것은 그 구성의 명칭이 동일하여 이를 구분하기 위한 것으로, 반드시 그 순서에 한정되는 것은 아니다. 그리고, 배기가스 재순환 장치는 EGR장치, 이지알장치, 또는 EGR로 기재될 수 있다. However, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of explanation, the present invention is not necessarily limited to the bar shown in the drawings, and the thickness is enlarged to clearly express various parts and regions. It was. In addition, in order to clearly describe the embodiment of the present invention, parts irrelevant to the description are omitted, and the same or similar components are given the same reference numerals throughout the specification. In the following description, the names of components are divided into first, second, and the like to distinguish them because the names of the components are the same, and the order is not necessarily limited thereto. And, the exhaust gas recirculation device may be described as an EGR device, an EGR device, or an EGR.

도 1은 본 발명의 실시예에 따른 수냉식 이지알 쿨러의 일부 분해 사시도이다. 1 is a partially exploded perspective view of a water-cooled EGR cooler according to an embodiment of the present invention.

도 1을 참조하면, 수냉식 이지알 쿨러는 하우징(110), U-캡(122), 브라켓(115), 공급 파이프(100), 배출 파이프(105), 서포터(300), 튜브(125), 핀(120), 컵 플레이트(200), 튜브 삽입홀(205), 플랜지(135), 플랜지 바(130), 삽입 돌기(215), 유압통로(210a), 및 배출 통로(210b)를 포함한다. Referring to FIG. 1 , the water-cooled GR cooler includes a housing 110 , a U-cap 122 , a bracket 115 , a supply pipe 100 , a discharge pipe 105 , a supporter 300 , a tube 125 , It includes a pin 120, a cup plate 200, a tube insertion hole 205, a flange 135, a flange bar 130, an insertion protrusion 215, a hydraulic passage 210a, and a discharge passage 210b. .

상기 하우징(110) 안쪽에 튜브(125)가 설정된 간격을 두고 배열되고, 상기 튜브(125) 사이에는 상기 서포터(300)가 배치되어 상기 튜브(125)들 사이에 간격을 일정하게 유지할 수 있다. 여기서, 상기 튜브(125) 안쪽으로는 냉각될 이지알 가스가 지나고, 상기 튜브(125) 외측으로는 냉각수가 흐른다. Tubes 125 are arranged inside the housing 110 at a set interval, and the supporter 300 is disposed between the tubes 125 to maintain a constant distance between the tubes 125 . Here, the EGR gas to be cooled passes inside the tube 125 , and cooling water flows outside the tube 125 .

상기 하우징(110)의 상면에는 냉각수가 들어가는 공급 파이프(100)와 냉각수가 배출되는 배출 파이프(105)가 각각 연결되며, 상기 하우징(110)의 하부면에는 장착용 브라켓(115)이 접합된다. A supply pipe 100 into which the cooling water enters and a discharge pipe 105 through which the cooling water is discharged are respectively connected to the upper surface of the housing 110 , and a mounting bracket 115 is bonded to the lower surface of the housing 110 .

상기 하우징(110)의 일면에는 컵 플레이트(200)가 체결되는데, 상기 컵 플레이트(200)에는 상기 튜브(125)의 단부가 삽입되어 접합되는 튜브 삽입홀(205)이 설정된 간격을 두고 형성된다. 여기서, 상기 하우징(110)의 타면에는 U자 형태의 상기 U-캡(122)이 접합된다. A cup plate 200 is fastened to one surface of the housing 110 , and a tube insertion hole 205 to which an end of the tube 125 is inserted and joined is formed at a set interval in the cup plate 200 . Here, the U-shaped U-cap 122 is bonded to the other surface of the housing 110 .

상기 플랜지(135)의 둘레는 상기 컵 플레이트(200)의 둘레에 접합되고, 상기 플랜지(135)에는 플랜지 바(130)가 일체로 형성된다. 여기서, 상기 플랜지 바(130)는 이지알 가스가 흘러들어가는 유압통로(210a)와 이지알 가스가 배출되는 배출 통로(210b)를 구분한다. The circumference of the flange 135 is joined to the circumference of the cup plate 200 , and the flange bar 130 is integrally formed with the flange 135 . Here, the flange bar 130 separates the hydraulic passage 210a through which the EGR gas flows and the discharge passage 210b through which the EGR gas is discharged.

상기 플랜지 바(130)의 안쪽 면에는 삽입 돌기(215)가 일체로 돌출되어 형성되고, 상기 삽입 돌기(215)는 상기 튜브(125) 안쪽으로 삽입되는 구조를 가지며, 상기 삽입 돌기(215)는 상기 핀(120)의 위치를 설정할 수 있다. 여기서, 상기 튜브 안으로 상기 핀이 삽입되는데, 상기 핀이 삽입된 상태에서, 상기 삽입돌기가 상기 핀이 상기 튜브 안쪽에서 좌우로 움직이는 것을 방지하며, 이 상태에서 브레이징이 되므로, 상기 튜브 안에서 상기 핀의 위치를 일정하게 유지할 수 있다. An insertion protrusion 215 is integrally formed on the inner surface of the flange bar 130, and the insertion protrusion 215 has a structure to be inserted into the tube 125, and the insertion protrusion 215 is The position of the pin 120 may be set. Here, the pin is inserted into the tube, and in the state in which the pin is inserted, the insertion protrusion prevents the pin from moving left and right inside the tube. position can be kept constant.

도 2는 본 발명의 실시예에 따른 수냉식 이지알 쿨러의 결합상태를 보여주는 단면도이다. 2 is a cross-sectional view showing a coupled state of the water-cooled GR cooler according to an embodiment of the present invention.

도 2를 참조하면, 상기 하우징(110) 내부에는 납작한 파이프 구조의 상기 튜브(125)가 상부에서 하부로 배열되고, 상기 튜브(125)들 사이에 상기 서포터(300)가 개재된다. 아울러, 상기 튜브(125) 안쪽으로 상기 핀(120)이 삽입된다. Referring to FIG. 2 , the tube 125 having a flat pipe structure is arranged from the top to the bottom inside the housing 110 , and the supporter 300 is interposed between the tubes 125 . In addition, the pin 120 is inserted into the tube 125 .

상기 플랜지(135)에는 상기 플랜지 바(130)가 일체로 형성되고, 상기 플랜지 바(130)의 안쪽 면에는 상부에서 하부로 설정된 간격을 두고 삽입 돌기(215)가 형성된다. The flange bar 130 is integrally formed with the flange 135 , and an insertion protrusion 215 is formed on the inner surface of the flange bar 130 at a set interval from the top to the bottom.

상기 삽입 돌기(215)는 상기 컵 플레이트(200)에 체결된 상기 튜브(125)의 안쪽으로 삽입되고, 일측은 상기 튜브(125)에 접하는 구조를 갖는다. The insertion protrusion 215 is inserted into the tube 125 fastened to the cup plate 200 , and has a structure in which one side is in contact with the tube 125 .

도 3을 참조하여, 상기 삽입 돌기, 상기 핀, 및 상기 튜브 사이의 결합구조에 대해서 상세하게 설명한다. Referring to FIG. 3 , a coupling structure between the insertion protrusion, the pin, and the tube will be described in detail.

도 3은 본 발명의 실시예에 따른 수냉식 이지알 쿨러에서 삽입 돌기, 핀, 및 튜브의 결합구조를 보여주는 정면도이다. 3 is a front view showing the coupling structure of the insertion protrusion, the fin, and the tube in the water-cooled GR cooler according to an embodiment of the present invention.

도 3을 참조하면, 상기 하우징(110) 안쪽에 상기 튜브(125)가 하부에서 상부 쪽으로 설정된 간격을 두고 배열되고, 상기 튜브(125)들 사이에 상기 서포터(300)가 개재된다. 아울러, 상기 서포터(300)는 상기 튜브(125)와 상기 하우징(110) 사이에도 배치되어 이들 사이에 간격을 유지할 수 있다. Referring to FIG. 3 , the tubes 125 are arranged at a set interval from the bottom to the top inside the housing 110 , and the supporter 300 is interposed between the tubes 125 . In addition, the supporter 300 may be disposed between the tube 125 and the housing 110 to maintain a gap therebetween.

상기 서포터(300)는 지그재그 형태를 가질 수 있으며, 일면에서 타면으로 냉각수가 통하는 통로가 형성될 수 있으며, 이에 대해서는 본 발명에서 상세한 설명을 생략한다. The supporter 300 may have a zigzag shape, and a passage through which the coolant flows from one surface to the other surface may be formed, and a detailed description thereof will be omitted in the present invention.

상기 튜브(125) 안쪽으로 삽입되는 핀(120)은 지그재그 형태를 가지며, 일측은 상기 튜브(125)의 내측 일면에 접합되고, 타측은 상기 튜브(125)의 내측 타면에 접합된다. The fin 120 inserted into the tube 125 has a zigzag shape, one side is bonded to one inner surface of the tube 125 , and the other end is bonded to the other inner surface of the tube 125 .

좀 더 상세하게 설명하면, 상기 핀(120)은 제1 부분(120a), 제2 부분(120b), 및 제3 부분(120c)를 포함하며, 상기 핀(120)은 하나의 판재를 일체로 절곡하여 상기 제1, 제2, 제3 부분(120a, 120b, 120c)를 형성할 수 있다. In more detail, the pin 120 includes a first part 120a, a second part 120b, and a third part 120c, and the pin 120 is a single plate material. The first, second, and third portions 120a, 120b, and 120c may be formed by bending.

상기 제1 부분(120a)는 상기 튜브(125)의 내측 하면에 접합되고, 상기 제2 부분(120b)는 상기 튜브(125)의 내측 상면에 접합되며, 상기 제3 부분(120c)는 상기 제2 부분(120b)와 상기 제1 부분(120a)의 단부를 일체로 연결한다. The first portion 120a is bonded to the inner lower surface of the tube 125 , the second portion 120b is bonded to the inner upper surface of the tube 125 , and the third portion 120c is the first The second part 120b and the end of the first part 120a are integrally connected.

상기 제1 부분(120a)는 상기 튜브(125)의 폭 방향으로 설정된 간격을 두고 배열되고, 상기 제2 부분(120b)는 상기 제1 부분(120a)와 엇갈리게 상기 튜브(125)의 폭 방향으로 설정된 간격을 두고 배열된다. The first portion 120a is arranged at a set interval in the width direction of the tube 125 , and the second portion 120b is crossed with the first portion 120a in the width direction of the tube 125 . They are arranged at set intervals.

그리고, 상기 제3 부분(120c)가 상기 제2, 3부분(120b, 120c)를 연결하여 지그재그 형태의 상기 핀(120)을 구성한다. In addition, the third portion 120c connects the second and third portions 120b and 120c to form the zigzag pin 120 .

상기 삽입 돌기(215)의 하면의 일부는 상기 제1 부분(120a)에 접합되고, 상기 삽입 돌기(215)의 상면의 일부는 상기 튜브(125)의 내측 일면에 접합되며, 상기 삽입 돌기(215)의 측면 일부는 상기 제3 부분(120c)의 측면에 접합될 수 있다. A portion of the lower surface of the insertion protrusion 215 is bonded to the first portion 120a, and a portion of the upper surface of the insertion projection 215 is bonded to the inner surface of the tube 125, and the insertion projection 215 ) may be joined to the side surface of the third part 120c.

본 발명의 실시예에서, 플랜지 바(130)에 형성된 삽입 돌기(215)가 이지알 가스(EGR gas)가 유압통로(210a)에서 배출 통로(210b)로 새는 것을 방지하여 전체적인 냉각효율을 향상시킬 수 있다. In an embodiment of the present invention, the insertion protrusion 215 formed on the flange bar 130 prevents the EGR gas from leaking from the hydraulic passage 210a to the discharge passage 210b to improve the overall cooling efficiency. can

또한, 플랜지 바(130)에 형성된 삽입 돌기(215)가 튜브(125) 안쪽에 배치되는 핀(120)의 위치를 안정적으로 유지하여 조립 안정성을 향상시키고, 강건성과 내구성도 향상시킬 수 있다. In addition, the insertion protrusion 215 formed on the flange bar 130 stably maintains the position of the pin 120 disposed inside the tube 125 , thereby improving assembly stability and improving robustness and durability.

이상으로 본 발명에 관한 바람직한 실시예를 설명하였으나, 본 발명은 상기 실시예에 한정되지 아니하며, 본 발명의 실시예로부터 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의한 용이하게 변경되어 균등하다고 인정되는 범위의 모든 변경을 포함한다. Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and can be easily changed by those of ordinary skill in the art to which the present invention pertains from the embodiments of the present invention and equivalent. Including all changes to the extent recognized as such.

100: 공급 파이프 105: 배출 파이프
110: 하우징 115: 브라켓
120: U-캡 120: 핀
120a: 제1 부분 120b: 제2 부분
120c: 제3 부분 125: 튜브
135: 플랜지 130: 플랜지 바
215: 삽입 돌기 210a: 유입 통로
210b: 배출 통로 200: 컵 플레이트
205: 튜브 삽입홀 300: 서포터100: supply pipe 105: exhaust pipe
110: housing 115: bracket
120: U-cap 120: pin
120a: first part 120b: second part
120c: third part 125: tube
135: flange 130: flange bar
215: insertion protrusion 210a: inlet passage
210b: discharge passage 200: cup plate
205: tube insertion hole 300: supporter

Claims (9)

배기측에서 흡기측으로 재순환되는 이지알 가스를 냉각하는 수냉식 이지알 쿨러에 있어서,
하우징 안에 설정된 간격을 두고 배열되는 튜브;
상기 튜브 안쪽으로 삽입되는 핀;
상기 튜브의 단부가 삽입되고, 상기 하우징의 둘레를 따라서 접합되는 컵 플레이트; 및
컵 플레이트의 둘레를 따라서 접합되고, 이지알 가스가 들어가는 유입 통로와 이지알 가스가 배출되는 배출 통로를 나누는 플랜지 바가 일체로 형성되는 플랜지;를 포함하며,
상기 플랜지 바에는 상기 튜브 안쪽으로 삽입되는 삽입 돌기가 돌출되어 형성되되,
상기 핀은 상기 튜브의 내측 일면에 밀착되는 제1 부분과, 상기 튜브의 내측 타면에서 상기 제1 부분과 엇갈리게 배치되는 제2 부분과, 상기 제1 부분의 단부와 상기 제2 부분의 단부를 연결하는 제3 부분을 포함하며,
상기 삽입 돌기의 하면의 일부는 상기 제1 부분에 접합되고, 상기 삽입 돌기의 상면의 일부는 상기 튜브의 내측 일면에 접합되며, 상기 삽입 돌기의 측면 일부는 상기 제3 부분의 측면에 접합되는 수냉식 이지알 쿨러. In the water-cooled EGR cooler for cooling the EGR gas recirculated from the exhaust side to the intake side,
Tubes arranged at set intervals in the housing;
a pin inserted into the tube;
a cup plate into which an end of the tube is inserted and joined along the circumference of the housing; and
A flange joined along the circumference of the cup plate and integrally formed with a flange bar dividing an inlet passage through which EGR gas enters and an outlet passage through which EGR gas is discharged.
The flange bar is formed with an insertion protrusion that is inserted into the tube to protrude,
The fin connects a first portion in close contact with the inner surface of the tube, a second portion interlaced with the first portion on the other inner surface of the tube, and an end of the first portion and an end of the second portion comprising a third part to
A portion of the lower surface of the insertion protrusion is joined to the first part, a portion of the upper surface of the insertion protrusion is joined to the inner surface of the tube, and a side surface of the insertion protrusion is joined to the side surface of the third part. EGR cooler. 삭제delete 삭제delete 삭제delete 삭제delete 제1항에 있어서,
상기 튜브 사이에 배치되어 이들 사이에 일정한 간격을 유지하는 서포터를 더 포함하는 수냉식 이지알 쿨러. The method of claim 1,
The water-cooled EGR cooler further comprising a supporter disposed between the tubes to maintain a constant distance therebetween. 제1항에 있어서,
상기 핀은 지그재그 형태로 절곡된 상태로 상기 튜브 안쪽으로 삽입되는 수냉식 이지알 쿨러. The method of claim 1,
The fin is a water-cooled EGR cooler that is inserted into the tube in a bent state in a zigzag shape. 제1항에 있어서,
상기 하우징으로 각각 연결되어 냉각수가 공급되는 공급 파이프와 냉각수가 배출되는 배출 파이프를 포함하는 수냉식 이지알 쿨러. The method of claim 1,
A water-cooled EGR cooler including a supply pipe through which the cooling water is supplied and a discharge pipe through which the cooling water is discharged, respectively connected to the housing. 제1항에 있어서,
상기 핀, 상기 튜브, 또는 상기 하우징은 알루미늄 합금으로 만들어진 수냉식 이지알 쿨러. The method of claim 1,
The fin, the tube, or the housing is a water-cooled EGR cooler made of an aluminum alloy.
KR1020170171142A 2017-12-13 2017-12-13 Water-cooled egr cooler KR102463201B1 (en)

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Citations (2)

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KR101298382B1 (en) * 2006-07-03 2013-08-20 모다인 매뉴팩츄어링 컴파니 Egr cooler
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CN102900570A (en) * 2012-09-20 2013-01-30 浙江银轮机械股份有限公司 U-shaped exhaust gas recirculation (EGR) cooler

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