[go: up one dir, main page]

KR20190113572A - Exhaust gas cooler - Google Patents

Exhaust gas cooler Download PDF

Info

Publication number
KR20190113572A
KR20190113572A KR1020190027112A KR20190027112A KR20190113572A KR 20190113572 A KR20190113572 A KR 20190113572A KR 1020190027112 A KR1020190027112 A KR 1020190027112A KR 20190027112 A KR20190027112 A KR 20190027112A KR 20190113572 A KR20190113572 A KR 20190113572A
Authority
KR
South Korea
Prior art keywords
exhaust gas
gas cooler
bypass tube
bypass
grooves
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
KR1020190027112A
Other languages
Korean (ko)
Other versions
KR102148416B1 (en
Inventor
기욤 허버트
밀란 리시안
Original Assignee
한온시스템 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한온시스템 주식회사 filed Critical 한온시스템 주식회사
Publication of KR20190113572A publication Critical patent/KR20190113572A/en
Application granted granted Critical
Publication of KR102148416B1 publication Critical patent/KR102148416B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/0205—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using heat exchangers
    • 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
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-section
    • 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
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • 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
    • F28F1/34—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 and extending obliquely
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • 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
    • 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
    • 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
    • F28F1/34—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 and extending obliquely
    • F28F1/36—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 and extending obliquely the means being helically wound fins or wire spirals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2210/00—Heat exchange conduits
    • F28F2210/06—Heat exchange conduits having walls comprising obliquely extending corrugations, e.g. in the form of threads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Exhaust Silencers (AREA)

Abstract

The present invention relates to an exhaust gas cooler having at least one bypass tube (12) extending outside a space through which a coolant flows. The exhaust gas cooler has at least one groove (16) in a passageway of the at least one bypass tube (12).

Description

배기가스 냉각기{EXHAUST GAS COOLER}Exhaust Gas Cooler {EXHAUST GAS COOLER}

본 발명은 배기가스 냉각기에 관한 것이다.The present invention relates to an exhaust gas cooler.

특히, 배기가스가 내연 기관의 신선 공기 측으로 재순환될 때, 특정 상황에서는 배기가스를 냉각시키는 것이 바람직하지 않다. 이와 관련하여 배기가스는 냉각되지 않거나, 또는 실제 배기가스 재순환 라인과 동일한 정도로 냉각되지 않는 바이패스 관(bypass tube)을 통해 안내된다.In particular, when the exhaust gas is recycled to the fresh air side of the internal combustion engine, it is not desirable to cool the exhaust gas under certain circumstances. In this regard the exhaust gases are guided through a bypass tube which is not cooled or which is not cooled to the same extent as the actual exhaust gas recycle line.

이 경우에는 두 가지 구조적 형상이 구분된다. 한편으로 바이패스 관은 냉각기 하우징 내부에 위치할 수 있으며, 따라서 상기 바이패스 관 주위로 냉각제가 흐를 수 있다. 이는 부품들 사이에 고정된 바이패스 관이 실제로 상기 부품들과의 온도차를 갖지 않기 때문에 이러한 온도 차이로 인한 응력을 피할 수 있다는 장점이 있다. 그러나 바이패스 관은 통상 배기가스 냉각기 영역에서 실제 배기가스 재순환 라인보다 짧긴 하지만 여전히 배기가스 냉각이 일어나고, 이러한 점이 단점으로 언급된다. 주요한 단점은, 바이패스 관이 관류될 때에도 열전달이 일어난다는 데 있으며, 이러한 열전달은 냉각관들이 관류될 때보다 적더라도 방지되어야 한다는 것이다.In this case, two structural shapes are distinguished. On the one hand, the bypass tube can be located inside the cooler housing, so that coolant can flow around the bypass tube. This has the advantage that the stress caused by this temperature difference can be avoided because the bypass tube fixed between the parts does not actually have a temperature difference with the parts. However, the bypass tube is usually shorter than the actual exhaust gas recirculation line in the exhaust cooler area but still has exhaust cooling, which is mentioned as a disadvantage. The main disadvantage is that heat transfer occurs even when the bypass tube is perfused, and this heat transfer should be prevented even if less than when the cooling tubes are perfused.

이러한 문제는, 바이패스 관들이 냉각제가 채워진 냉각기 하우징 밖에서 가이드 되는 경우 방지된다. 그러나 이 경우 바이패스 관의 온도와 주변의 부품들과 상기 바이패스 관의 연결부들의 온도 사이에 존재하는 상당한 온도 차이로 인해 응력이 발생한다.This problem is avoided when the bypass tubes are guided out of the coolant housing filled with coolant. In this case, however, stress is generated due to the significant temperature difference between the temperature of the bypass tube and the temperature of the surrounding components and the connections of the bypass tube.

바이패스 관들이 냉각기 하우징 밖에서 연장되는 경우에 발생하는 언급한 문제점을 해결하기 위해, 하나 또는 다수의 기존의 바이패스 관에 금속 벨로즈(metal bellows)를 제공하는 방법이 공지되어 있으나, 이러한 금속 벨로즈는 추가 공간을 필요로 하고, 비교적 많은 비용으로 제조될 수밖에 없다. 또한, 상기와 같은 금속 벨로즈는 원형 단면적에서만 사용할 수 있으므로 원형 단면적을 갖는 다수의 관을 사용하더라도 사용 가능한 공간이 최적으로 사용될 수 없다.In order to solve the problems mentioned when bypass tubes extend outside the chiller housing, a method of providing metal bellows to one or a number of existing bypass tubes is known, but such metal bellows are known. Rose needs extra space and can be manufactured at a relatively high cost. In addition, since such metal bellows can be used only in a circular cross-sectional area, even if a plurality of tubes having a circular cross-sectional area are used, the available space cannot be optimally used.

완전성을 기하기 위해 언급되어야 할 것은, 미국 특허 US 2014/00727099 A1호에는 냉각기 하우징 내부에서 원형 단면적의 다수의 바이패스 관을 갖는 장치가 공지되어 있다는 것이다.It should be mentioned for the sake of completeness that US patent US 2014/00727099 A1 discloses a device having a plurality of bypass tubes of circular cross-sectional area inside a cooler housing.

이러한 배경에서, 본 발명은 종래 기술에 비해 비용 및/또는 효율 면에서 개선된 배기가스 냉각기를 제공하는 것을 과제로 한다.In this context, the present invention aims to provide an exhaust gas cooler which is improved in cost and / or efficiency compared to the prior art.

상기 과제는 청구항 1에 기재된 배기가스 냉각기에 의해서 해결된다.This problem is solved by the exhaust gas cooler of Claim 1.

따라서 상기 배기가스 냉각기는, 바이패스를 통해 안내되는 배기가스의 원치 않은 냉각이 가급적 피해지도록 냉각제가 관류하는 공간 밖에서 연장되는 하나 이상의 바이패스 관을 구비한다. 온도 차이로 인해 발생하는 열 응력을 보정하기 위해서는 하나 이상의 바이패스 관이 그의 진행 통로에서, 바꾸어 말하면 모든 장착 지점에서 분리되는 방식으로, 바이패스 관의 축 방향으로 이러한 바이패스 관의 변형을 허용하는 하나 이상의 홈을 갖는다. 이러한 홈은 금속 벨로즈보다 적은 비용으로 제조할 수 있고 공간이 덜 필요하다. 그 이유는 홈은 통상, 바이패스 관의 벽 두께에 상응하는 최대 깊이를 갖기 때문이며, 그 결과 홈이 관 내측에 형성되어 외측에 돌출부가 형성되더라도 관의 지름이 약간만 증가하고 실제로 추가 공간이 필요하지 않다. 더 나아가 기술된 홈에 있어서 예상되는 점은, 이러한 홈이 과도한 응력 발생 없이 온도 변화의 결과로 발생되는 바이패스 관의 확장 및 단축(shortening)을 가능하게 하며, 따라서 주변의 부품들과 비교해서 상이한 확장 또는 단축이 바람직하게 보정된다.The exhaust gas cooler thus comprises one or more bypass tubes extending outside the space through which the coolant flows so that unwanted cooling of the exhaust gas guided through the bypass is preferably avoided. In order to compensate for thermal stresses caused by temperature differences, one or more bypass tubes are allowed to deform such bypass tubes in the axial direction of the bypass tubes in such a way that they are separated from their traveling passageways, in other words at all mounting points. Has one or more grooves. Such grooves can be manufactured at less cost than metal bellows and require less space. The reason is that the grooves usually have a maximum depth corresponding to the wall thickness of the bypass tube, so that even if the grooves are formed inside the tube and protrusions are formed on the outside, the diameter of the tube increases slightly and no additional space is actually required. not. It is further envisaged for the grooves described that such grooves allow for expansion and shortening of the bypass tube resulting from temperature changes without generating excessive stress, and thus different from the surrounding components. Expansion or shortening is preferably corrected.

본 발명에 따른 배기가스 냉각기의 바람직한 개선예들은 추가 청구항들에 기재되어 있다.Preferred refinements of the exhaust gas cooler according to the invention are described in further claims.

사용 가능한 공간은 하나 이상의 바이패스 관이 타원형 단면적을 갖는 경우에 특히 유용하게 사용될 수 있다. 이러한 공간은 타원형일 수 있고, 또는 횡단면으로 보았을 때, 측면에서 반원으로 연결되는 서로 평행한 벽들을 가질 수 있다. 본 발명에 따른 홈에 의해서는 바람직하게 타원형 단면적을 갖는 바이패스 관이 사용될 수 있으며, 이러한 경우 특히 적합한 금속 벨로즈를 제공해야 할 필요 없이 기술한 응력 보정이 달성될 수 있다.The usable space can be particularly useful when one or more bypass tubes have an elliptical cross-sectional area. This space may be elliptical, or when viewed in cross section, may have walls parallel to each other connected in a semicircle at the sides. By means of the grooves according to the invention a bypass tube, preferably having an elliptical cross section, can be used, in which case the described stress compensation can be achieved without the need to provide a particularly suitable metal bellows.

본 발명에 따른 홈에서는 바이패스 관의 외주 및/또는 내주를 따라 환형으로 연장되는 것을 생각할 수 있으며, 또한 상기와 같은 홈이 다수 개로 제공될 수 있지만, 현재는 하나 이상의 연속하는 나선형 홈을 제공하는 것이 바람직하다. 홈의 피치는 예를 들면, 5 내지 10mm일 수 있다. 바람직하게 피치는 관의 축 방향으로 홈 폭의 약 2 내지 3배이며, 따라서 이는 종단면도에서 알 수 있다. 이러한 점은 홈의 각 중심 거리를 기준으로 2개 이상의 환형 홈 사이 거리에 대해서도 동일하게 적용된다.In the grooves according to the invention it can be envisaged to extend annularly along the outer and / or inner circumferences of the bypass tube, and furthermore, such grooves may be provided in plural, but presently providing one or more continuous spiral grooves. It is preferable. The pitch of the grooves can be, for example, 5 to 10 mm. Preferably the pitch is about 2 to 3 times the groove width in the axial direction of the tube, so this can be seen in the longitudinal section. This applies equally to the distance between two or more annular grooves based on each center distance of the grooves.

또한, 필요한 설치 공간을 증가시키지 않기 때문에, 홈이 외측에 형성되는 것이 바람직하다.In addition, since the required installation space is not increased, the groove is preferably formed on the outside.

계속해서 상기 바이패스 관의 경우, 이러한 바이패스 관의 벽 두께가 약 0.5mm 내지 1.0mm일 경우 유익한 특성이 기대된다. 특히, 이러한 벽 두께에서는 본 발명에 따른 홈(들)이 경제적인 비용으로 형성될 수 있다.Subsequently, in the case of the bypass tube, advantageous properties are expected when the wall thickness of such bypass tube is about 0.5 mm to 1.0 mm. In particular, at this wall thickness the groove (s) according to the invention can be formed at economical cost.

지름과 관련하여 타원형 단면적의 경우 바이패스 관의 최대 지름이 30mm 내지 60mm가 바람직하다. 더 작은 타원형 단면적의 지름은 10 내지 30mm일 수 있다.With regard to the diameter, in the case of an elliptical cross section, the maximum diameter of the bypass tube is preferably 30 mm to 60 mm. The diameter of the smaller elliptical cross section may be between 10 and 30 mm.

앞에서 이미 언급한 실시예에 따르면, 적어도 하나의 홈의 깊이는 0.5mm 내지 0.8mm가 바람직하다. 이러한 깊이는 바람직하게는 경우에 따라 벽 두께와 같은 크기이다. 또한, 이는 횡단면으로 보았을 때 벨로즈의 "웨이브"가 벽 두께의 배수 정도의 높이를 갖기 때문에 단지 훨씬 더 적은 공간 수요를 갖는 벨로즈와 다르다는 것을 의미한다.According to the above-mentioned embodiment, the depth of the at least one groove is preferably 0.5 mm to 0.8 mm. This depth is preferably the same size as the wall thickness in some cases. This also means that when viewed in cross section, the "wave" of the bellows differs from the bellows with only much less space demand since it has a height that is a multiple of the wall thickness.

바람직하게는 냉각제가 관류하는 공간이 하우징에 의해 에워싸이게 됨으로써, 특히, 원치 않는 열전달과 관련하여, 바이패스 관(들)에 대한 매우 우수한 제한이 달성된다. 따라서 특히, 하나 또는 다수의 바이패스 관이 배기가스에 의해 관류되는 경우, 상기와 같은 배기가스의 원치 않는 냉각이 방지될 수 있다. 이 경우에 언급되어야 할 점은, 하우징은 커버 또는 피복재로도 명명될 수 있고, 또는 영어로는 셸(shell)로도 명명될 수 있다는 점이다.Preferably the space through which the coolant flows is enclosed by the housing, thereby achieving a very good limitation on the bypass tube (s), in particular with regard to unwanted heat transfer. Thus, in particular, when one or a plurality of bypass pipes are flowed by the exhaust gas, unwanted cooling of such exhaust gas can be prevented. It should be noted that in this case, the housing can also be called a cover or cladding, or it can also be called a shell in English.

특히, 외부의, 즉 냉각제가 관류하는 하우징 밖에서 연장되는 하나의 바이패스 관을 갖는 본 발명에 따른 배기가스 냉각기를 효율적으로 적용하기 위해서는 또한, 앞서 설명한 하우징 및 상기 하나 이상의 바이패스 관이 하나 이상의 공통 플랜지에 의해 지지되는 것이 바람직하다. 바람직하게 두 단부에는 각각 플랜지가 제공되며, 이러한 플랜지는 필요한 관들, 하우징 등을 지지하고, 더 나아가 주변의 부품들과의 연결을 위해 적합한 윤곽, 예를 들면 고정용 개구들을 갖는다. 상기 플랜지는 연결판으로도 명명될 수 있다.In particular, in order to efficiently apply the exhaust gas cooler according to the invention having one bypass tube extending outside, i.e., outside the housing through which the coolant flows, the housing described above and the at least one bypass tube are also at least one common. It is preferably supported by a flange. Preferably both ends are provided with flanges, which flanges support the necessary tubes, housings and the like and further have contours suitable for connection with the surrounding components, for example fixing openings. The flange may also be called a connecting plate.

하기에서는 도면에 도시된 본 발명의 실시예가 더 상세히 설명된다. 도면부에서:
도 1은 본 발명에 따른 바이패스 관의 측면도이고;
도 2는 본 발명에 따른 바이패스 관의 종단면도이며;
도 3은 본 발명에 따른 바이패스 관의 횡단면도이고
도 4는 본 발명에 따른 배기가스 냉각기의 측면도이고; 그리고
도 5는 본 발명에 따른 배기가스 냉각기의 정면도이다.In the following the embodiments of the invention shown in the drawings are described in more detail. In drawing:
1 is a side view of a bypass tube according to the present invention;
2 is a longitudinal sectional view of the bypass tube according to the present invention;
3 is a cross-sectional view of the bypass tube according to the present invention;
4 is a side view of an exhaust gas cooler according to the present invention; And
5 is a front view of an exhaust gas cooler according to the present invention.

도 1로부터 알 수 있는 바와 같이, 이 경우 바이패스 관(12)이 나선형 홈을 가지며, 도시된 예에서 상기 홈은 3개의 코일부 그리고 5mm 내지 10mm의 피치를 갖는다. 상기와 같은 홈은 예를 들면, 원형 단면적 그리고 약 10mm 내지 56mm의 외경을 갖는 관에 형성될 수 있다. 홈(16)을 생성하기 위해, 상기 관은 선반(lathe)에 고정될 수 있고 관 축을 중심으로 회전될 수 있으며, 이러한 경우 외측에 작용하는 스탬프(stamp) 또는 이와 유사한 도구가 축 방향으로 일정하게 움직임으로써, 예를 들면, 0.5mm 내지 0.8mm의 깊이를 갖는 도 2에 나타난 나선형 홈이 형성된다. 앞에서 언급한 타원형 단면적의 장점을 활용하기 위해, 후속해서 관은 실제로 대향하는 2개의 측면에 의해 압축되며, 그 결과 도 3에 나타난 단면이 30mm 내지 60mm의 긴 지름과 약 10mm 내지 30mm의 짧은 지름(도 3에서 폭 방향으로)으로 조절된다. 도 2와 도 3에 도시된 바와 같이, 홈은 실제로 반원형 단면을 가질 수 있다.As can be seen from FIG. 1, in this case the bypass tube 12 has a helical groove, which in the example shown has three coil parts and a pitch of 5 mm to 10 mm. Such grooves may be formed in a tube having, for example, a circular cross-sectional area and an outer diameter of about 10 mm to 56 mm. In order to create the groove 16, the tube can be fixed to a lathe and rotated about the tube axis, in which case a stamp or similar tool acting outwardly is constantly in the axial direction. By movement, for example, the spiral groove shown in FIG. 2 having a depth of 0.5 mm to 0.8 mm is formed. In order to take advantage of the aforementioned elliptical cross section, the tube is subsequently compressed by two opposing sides, so that the cross section shown in FIG. 3 has a long diameter of 30 mm to 60 mm and a short diameter of about 10 mm to 30 mm ( In the width direction in FIG. 3). As shown in Figures 2 and 3, the grooves may actually have a semicircular cross section.

도 4에서는 본 발명에 따른 바이패스 관(12)이 배기가스 냉각기(18)에 통합되는 것을 알 수 있다. 도시된 예에서 상기 배기가스 냉각기는 도 5에서 더 쉽게 식별할 수 있는 2개의 플랜지(22)를 갖는데, 이들 플랜지는 실제로 냉각제용 하우징(20)과 상기 바이패스 관(12)을 모두 지지한다. 바이패스 관(12)은 특히, 원치 않는 열전달을 방지하기에 바람직한 방식으로 하우징(20) 밖에 형성되어 있으나, 이러한 설계는 온도차로 인해 응력을 발생시킬 수 있으며, 본 발명에 따르면 이러한 응력은 표시된 홈(16)에 의해 방지된다. 도 4에 나타난 바와 같이, 냉각제가 관류하는 하우징(20)과 바이패스 관(12)은 실제로 서로 평행하게 그리고 실제로 2개의 플랜지(22)에 수직으로 연장된다.In FIG. 4 it can be seen that the bypass tube 12 according to the invention is integrated into the exhaust gas cooler 18. In the example shown, the exhaust gas cooler has two flanges 22, which can be more easily identified in FIG. 5, which actually support both the coolant housing 20 and the bypass pipe 12. The bypass tube 12 is formed outside the housing 20, in particular in a preferred manner to prevent unwanted heat transfer, but such a design can generate stresses due to temperature differences, which in accordance with the present invention may be indicated by (16) is prevented. As shown in FIG. 4, the housing 20 and the bypass tube 12 through which the coolant flows extend in fact parallel to each other and in fact perpendicular to the two flanges 22.

추가로 도 5에는 하우징(20) 내에 형성된 냉각제용 공간(24)들 그리고 그 사이에, 바람직하게는 횡단면으로 보았을 때 직사각형인 하우징(20)의 벽들을 향해 형성된 냉각될 배기가스용 공간(26)들이 나타난다. 후자로 언급한 배기가스용 공간들은 열전달을 높이기 위해 추가로 리브(rib) 또는 핀(finn)을 구비한다. 그러나 상기 열전달은 하우징(20) 밖에 제공된 바이패스 관(12)에 대해 경미한 수준으로만 이루어지며, 이때 상기 바이패스 관은 도 5에서는 추가로 타원형으로 나타나고, 그리고 이러한 타원형 형태에서 특히 짧은 축은 단지 긴 축의 15 내지 25% 크기이다. 마지막으로 도 5에는 주변 부품들 상에 설치를 위한 고정용 개구(28)들이 나타난다.Further shown in FIG. 5 is a coolant space 24 formed in the housing 20 and a space 26 for the coolant exhaust gas to be formed therebetween, preferably towards the walls of the housing 20 that are rectangular in cross section. Appears. The latter mentioned exhaust spaces additionally have ribs or fins to increase heat transfer. However, the heat transfer is only at a slight level with respect to the bypass tube 12 provided outside the housing 20, where the bypass tube appears further oval in FIG. 5, and in this elliptical form the particularly short axis is only long. 15 to 25% of the axis. Finally, in FIG. 5, fixing openings 28 for installation on the peripheral parts are shown.

Claims (10)

냉각제가 관류하는 공간(24) 밖에서 연장되는, 하나 이상의 바이패스 관(bypass tube)(12)을 갖는 배기가스 냉각기(18)로서,
하나 이상의 바이패스 관(12)의 통로가 하나 이상의 홈(16)을 구비하는 것을 특징으로 하는, 배기가스 냉각기(18).An exhaust gas cooler (18) having one or more bypass tubes (12) extending outside the space (24) through which the coolant flows,
An exhaust gas cooler (18), characterized in that the passage of the one or more bypass tubes (12) has one or more grooves (16). 제1항에 있어서,
하나 이상의 바이패스 관(12)이 타원형의 단면적(oval cross-section)을 갖는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that the at least one bypass tube (12) has an oval cross-section. 제1항 또는 제2항에 있어서,
하나 이상의 홈(16)이 나선형으로 형성되어 있고, 상기 홈의 피치(pitch)가 5mm 내지 10mm인 것을 특징으로 하는, 배기가스 냉각기(18).The method according to claim 1 or 2,
The exhaust gas cooler (18), characterized in that one or more grooves (16) are formed helically and the pitch of the grooves is between 5 mm and 10 mm. 제1항에 있어서,
하나 이상의 홈(16)이 상기 바이패스 관(12)의 외측에 형성되어 있는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that at least one groove (16) is formed outside the bypass tube (12). 제1항에 있어서,
하나 이상의 바이패스 관(12)이 0.5mm 내지 1.0mm의 벽 두께를 갖는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that the at least one bypass tube (12) has a wall thickness of 0.5 mm to 1.0 mm. 제1항에 있어서,
하나 이상의 바이패스 관(12)이 30mm 내지 60mm의 지름을 갖는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that the at least one bypass tube (12) has a diameter of 30 mm to 60 mm. 제1항에 있어서,
하나 이상의 홈(16)이 0.5mm 내지 0.8mm의 깊이(T)를 갖는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that the at least one groove (16) has a depth T of 0.5 mm to 0.8 mm. 제1항에 있어서,
하나 이상의 홈(16)이 상기 바이패스 관(12)의 벽 두께에 최대한 상응하는 깊이(T)를 갖는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that at least one groove (16) has a depth (T) as close as possible to the wall thickness of the bypass tube (12). 제1항에 있어서,
냉각제가 관류하는 공간(24)이 하우징(20)에 의해 둘러싸인 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 1,
An exhaust gas cooler (18), characterized in that the space (24) through which the coolant flows is surrounded by the housing (20). 제9항에 있어서,
상기 하우징(20) 및 하나 이상의 바이패스 관(12)이 하나 이상의 공통 플랜지(22)에 의해 지지되는 것을 특징으로 하는, 배기가스 냉각기(18).The method of claim 9,
An exhaust gas cooler (18), characterized in that the housing (20) and at least one bypass tube (12) are supported by at least one common flange (22).
KR1020190027112A 2018-03-28 2019-03-08 Exhaust gas cooler Active KR102148416B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018204746.4 2018-03-28
DE102018204746.4A DE102018204746A1 (en) 2018-03-28 2018-03-28 exhaust gas cooler

Publications (2)

Publication Number Publication Date
KR20190113572A true KR20190113572A (en) 2019-10-08
KR102148416B1 KR102148416B1 (en) 2020-08-28

Family

ID=67910256

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020190027112A Active KR102148416B1 (en) 2018-03-28 2019-03-08 Exhaust gas cooler

Country Status (2)

Country Link
KR (1) KR102148416B1 (en)
DE (1) DE102018204746A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023211804A1 (en) * 2023-11-27 2025-05-28 Mahle International Gmbh Heat exchanger and combustion engine with such a

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006105464A (en) * 2004-10-04 2006-04-20 Toyota Motor Corp Heat exchanger and heat exchange device
KR20080038394A (en) * 2005-08-27 2008-05-06 베헤르 게엠베하 운트 콤파니 카게 Exhaust gas heat exchanger
KR20130067072A (en) * 2011-12-13 2013-06-21 주식회사 코렌스 Exhaust gas heat exchanger

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779312A (en) * 1972-03-07 1973-12-18 Universal Oil Prod Co Internally ridged heat transfer tube
JPH09152290A (en) * 1995-11-29 1997-06-10 Sanyo Electric Co Ltd Absorption refrigerating machine
ES2300163B1 (en) * 2005-07-29 2009-05-01 Valeo Termico, S.A. SYSTEM FOR THE CONTROL OF GAS CIRCULATION, IN SPECIAL OF THE EXHAUST GASES OF A MOTOR.
DE102012106782A1 (en) 2012-07-26 2014-01-30 Halla Visteon Climate Control Corporation Heat exchanger for exhaust gas cooling in motor vehicles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006105464A (en) * 2004-10-04 2006-04-20 Toyota Motor Corp Heat exchanger and heat exchange device
KR20080038394A (en) * 2005-08-27 2008-05-06 베헤르 게엠베하 운트 콤파니 카게 Exhaust gas heat exchanger
KR20130067072A (en) * 2011-12-13 2013-06-21 주식회사 코렌스 Exhaust gas heat exchanger

Also Published As

Publication number Publication date
DE102018204746A1 (en) 2019-10-02
KR102148416B1 (en) 2020-08-28

Similar Documents

Publication Publication Date Title
CN106795812A (en) The plate of heat exchange and improvement noise reduction for turbine
RU2764489C2 (en) Aircraft power plant containing heat exchangers of air-liquid type
KR100971617B1 (en) Exhaust gas recirculation cooler
CN103380347A (en) Exhaust gas cooler
JP4939980B2 (en) EGR cooler
CN101424489A (en) Lightweight flow heat exchanger
US11761709B2 (en) Heat exchanger
US9512807B2 (en) Heat exchanger for cooling exhaust gas
KR102148416B1 (en) Exhaust gas cooler
KR20150118090A (en) Heat exchanger
US20090056650A1 (en) Oil cooler for vehicle
JP4607626B2 (en) Efficient heat exchanger and engine using the same
US11262143B2 (en) Compact heat exchanger
CN109538382B (en) Exhaust gas cooler and exhaust gas recirculation system having an exhaust gas cooler
US20120006012A1 (en) Flange Plate, Flange Connection and Exhaust Manifold
CN110431924A (en) For accommodating the casing of electronic component
KR20170026203A (en) Heat exchanmer for internal combustion engines
KR20060023540A (en) heat transmitter
JP2019152424A (en) Heat exchanger assembly
JP7483697B2 (en) Annular assembly for turbomachinery - Patent application
JP2006200490A (en) Exhaust gas cooling device for exhaust gas recirculating system
EP2963274A1 (en) Internal combustion engine
US11274640B2 (en) Fluid pipe arrangement
JP2008128627A (en) Water-cooled condenser
JP2020010427A (en) Thermoelectric power generation unit and thermoelectric power generation device

Legal Events

Date Code Title Description
A201 Request for examination
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 20190308

PA0201 Request for examination
PG1501 Laying open of application
E902 Notification of reason for refusal
PE0902 Notice of grounds for rejection

Comment text: Notification of reason for refusal

Patent event date: 20200521

Patent event code: PE09021S01D

E701 Decision to grant or registration of patent right
PE0701 Decision of registration

Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 20200722

PR0701 Registration of establishment

Comment text: Registration of Establishment

Patent event date: 20200820

Patent event code: PR07011E01D

PR1002 Payment of registration fee

Payment date: 20200821

End annual number: 3

Start annual number: 1

PG1601 Publication of registration