EP3845852A1 - Refroidisseur à recirculation de gaz d'échappement - Google Patents

Refroidisseur à recirculation de gaz d'échappement Download PDF

Info

Publication number
EP3845852A1
EP3845852A1 EP19383212.8A EP19383212A EP3845852A1 EP 3845852 A1 EP3845852 A1 EP 3845852A1 EP 19383212 A EP19383212 A EP 19383212A EP 3845852 A1 EP3845852 A1 EP 3845852A1
Authority
EP
European Patent Office
Prior art keywords
coolant
fluid
housing
gas
plate type
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.)
Withdrawn
Application number
EP19383212.8A
Other languages
German (de)
English (en)
Inventor
Raul ROMERO PEREZ
Juan Carlos DE FRANCISCO
Rosa Maria PUERTOLAS
Efrain Jonatan VARGAS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Termico SA
Original Assignee
Valeo Termico SA
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 Valeo Termico SA filed Critical Valeo Termico SA
Priority to EP19383212.8A priority Critical patent/EP3845852A1/fr
Publication of EP3845852A1 publication Critical patent/EP3845852A1/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
    • 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
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • 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

Definitions

  • the present invention relates to a heat exchanger, particularly to a thermal management system for an Exhaust Gas Re-circulation (EGR) cooler.
  • EGR Exhaust Gas Re-circulation
  • An Exhaust Gas Re-circulation (EGR) cooler receives exhaust gases from an engine and cools the exhaust gases before the exhaust gases are recirculated back to the engine's cylinder.
  • EGR cooler receives exhaust gases from an engine and cools the exhaust gases before the exhaust gases are recirculated back to the engine's cylinder.
  • the EGR cooler further reduces the combustion chamber temperature, thereby preventing valve clatter, detonation and further reduces NOx formation.
  • the EGR cooler substantially reduces vehicle emissions to enable meeting stringent vehicular exhaust emission norms prevalent in most parts of the world.
  • exhaust gas is received in a tank and from the tank, the exhaust gas is delivered to and passes through heat exchange tubes received inside a housing.
  • coolant is delivered inside the housing and around the heat exchange tubes by a coolant inlet pipe, with a diverging tank disposed between the coolant inlet pipe and the housing.
  • the diverging tank is used to smooth transition of coolant flow from the coolant inlet pipe to the inside of the housing to improve coolant distribution inside the housing and around the heat exchange tubes. Uniform distribution of the coolant inside the housing and around the heat exchange tubes is necessary to achieve efficient heat exchange between the exhaust gas passing through the heat exchange tubes and the coolant flowing around the heat exchange tubes to achieve cooling of the exhaust gas and reducing the temperature of the exhaust gas.
  • the need for the tank between the coolant inlet pipe and the housing increases the overall size and cost of the EGR cooler.
  • the coolant inlet is disposed at sidewall of the EGR cooler.
  • the EGR cooler handles high temperature exhaust gases in the temperature range of 400 to 900 °C. Accordingly, temperatures at certain critical regions inside the EGR cooler, particularly, at a gas inlet area of the heat exchange tubes, that first comes into contact with the exhaust gas exceeds acceptable limits, sometimes reaches 850 °C and cause formation of hot spots.
  • the hot spots at the gas inlet area cause problems such as boiling of the coolant, durability issues and excessive thermo-dynamical stresses at the gas inlet area.
  • the coolant from the coolant inlet directed to the gas inlet area of the heat exchange tubes cools of the gas inlet area.
  • coolant flow reaching the gas inlet area is required to be homogeneous, i.e.
  • EGR cooler with parallel flow configuration the coolant inlet and the gas inlet region are close to each other, as such the coolant flow does not get enough time to homogenize as the coolant reaches the gas inlet area and as such the coolant flow is not homogenized. Accordingly, EGR cooler with counter flow configuration is generally preferred over parallel flow configuration, wherein the coolant inlet is disposed away from the gas inlet area of the heat exchange tubes and the coolant flow gets time to homogenize before reaching the gas inlet area.
  • the coolant entering the housing through the coolant inlet strikes inside walls of the housing, loses velocity and remains unguided and as such fails to reach the critical regions such as the gas inlet area.
  • a baffle used for guiding and directing the coolant to the gas inlet area is an additional component and packaging thereof within limited space inside the housing is a problem.
  • the conventional baffle fails to effectively regulate distribution and velocity of coolant directed to the gas inlet area.
  • the conventional baffle is a dedicated component and as such there are product costs, inventory costs and process costs associated with configuring the baffle.
  • an EGR cooler configured with an arrangement to effectively direct coolant to a gas inlet area of the EGR cooler, thereby preventing high temperature hot spots at the gas inlet area and accordingly addressing issues such as boiling of coolant, durability issues and excessive thermo-dynamical stresses at the gas inlet area. Still further, there is a need for an EGR cooler that ensures that coolant flow reaching the gas inlet area is homogeneous to ensure efficient cooling of the gas inlet area. Furthermore, there is a need for an EGR cooler that ensures that coolant after entering the housing is having sufficient velocity to reach the gas inlet area.
  • an EGR cooler with an arrangement to effectively direct coolant to a gas inlet area formed by modifying an existing part of the EGR cooler, thereby eliminating the need for additional components and reducing product and process costs associated with configuring such an arrangement. Further, there is a need for an EGR cooler that exhibits extended service life, improved reliability and efficiency.
  • An object of the present invention is to provide an EGR cooler that obviates the drawbacks associated with conventional EGR cooler that fails to effectively regulate distribution and velocity of coolant directed to a gas inlet area.
  • Another object of the present invention is to provide an EGR cooler configured with an arrangement to effectively direct coolant to a gas inlet area of the EGR cooler, thereby preventing high temperature hot spots at the gas inlet area and accordingly addressing issues such as boiling of coolant, durability issues and excessive thermo-dynamical stresses at the gas inlet area.
  • Still another object of the present invention is to provide an EGR cooler that ensures that coolant after entering the housing is having sufficient velocity to reach the gas inlet area.
  • Yet another object of the present invention is to provide an EGR cooler with an arrangement to effectively direct coolant to a gas inlet area formed by modifying an existing part of the EGR cooler, thereby eliminating the need for additional components and reducing product and process costs associated with configuring such arrangement.
  • Another object of the present invention is to provide an EGR cooler that exhibits extended service life, improved reliability and efficiency.
  • some elements or parameters may be indexed, such as a first element and a second element.
  • this indexation is only meant to differentiate and name elements which are similar but not identical. No idea of priority should be inferred from such indexation, as these terms may be switched without betraying the invention. Additionally, this indexation does not imply any order in mounting or use of the elements of the invention.
  • a heat exchanger particularly, a plate type Exhaust Gas Re-circulation (EGR) cooler is disclosed in accordance with an embodiment of the present invention.
  • the plate type Exhaust Gas Re-circulation (EGR) cooler includes a housing that includes a plurality of first fluid inlets and first fluid outlets, a second fluid inlet and a second fluid outlet.
  • the first fluid inlets and the first fluid outlets are fluidically connected to each other by first fluid passages defined by plates received in the housing.
  • the first fluid passages near the first fluid inlets define first fluid inlet area.
  • the second fluid inlet is for ingress of the second inside the housing and around the first fluid passages.
  • the second fluid outlet is for egress of second from inside the housing.
  • the second fluid inlet and the second fluid outlet are arranged with respect to the first fluid inlets and the first fluid outlets to define cross flow configuration between second fluid flow and first fluid flow.
  • a second fluid flow side of at least one of the plates includes at least one first guide and an array of second guides.
  • the at least one first guide is disposed near the second fluid inlet to prevent second fluid entering the housing from striking inside walls of housing.
  • the array of second guides is disposed near second fluid outlet to direct the second fluid to the first fluid inlet area.
  • the at least one first guide is of either one of linear and curved profile.
  • the at least one first guide is a single guide that is inclined at an angle ⁇ with respect to a first sidewall.
  • the at least one first guide includes an array of guides arranged along a first profile that is inclined at an angle ⁇ with respect to the first sidewall.
  • the at least one first guide is formed by at least one of stamping, punching and embossing operation.
  • the angle ⁇ is in range of 90 to 0 degrees.
  • the array of second guides are arranged along a second profile that is diverging away from the first fluid inlets in direction of flow of second fluid towards the second fluid outlet and that terminates upstream of the second fluid outlet.
  • the second profile is parallel to the first fluid inlets.
  • the array of guides are in form of dimples formed by stamping operation.
  • the second profile is inclined at an angle ⁇ with respect to the first sidewall, wherein the angle ⁇ is in range of 90 to 15 degrees.
  • the present invention relates to a thermal management system for an Exhaust Gas Re-circulation (EGR) cooler, specifically, the present invention relates to a plate type EGR cooler with counter flow configuration, wherein at least one plate of the plurality of plates received inside the housing is configured with at least one first guide and an array of second guides.
  • the at least one first guide prevents coolant entering inside a housing from striking inside walls of the housing, thereby maintaining velocity of coolant flow sufficient enough to reach gas inlet area for cooling thereof in spite of the EGR cooler with counter flow configuration.
  • the array of second guides directs coolant to the gas inlet area.
  • Such configuration of at least one first guide and the array of guide addresses issues such as boiling of coolant, durability issues and excessive thermo-dynamical stresses, arising due to hot spots forming at the gas inlet area of the EGR cooler.
  • the at least one first guide and the array of guides formed on at least one plate of the plurality of plates disposed inside housing of EGR cooler of the present invention is used for directing coolant to the gas inlet area of the EGR cooler to achieve cooling of the gas inlet area.
  • the at least one first guide and the array of second guides formed on at least one plate of the EGR cooler the present invention is also applicable for any other applications, where coolant or any other fluid is directed to and required to reach a particular region that is exposed to hot fluid and is required to be cooled.
  • FIG. 1a illustrates a plate type heat exchanger, particularly, a plate type EGR cooler 100 in accordance with an embodiment of the present invention. More Specifically, FIG. 1a illustrates a sectional view depicting details of a plate 116 of a plurality of plates 116 received inside a housing 110 of the EGR cooler 100.
  • the housing 110 includes a pair of opposite longitudinal walls 110a and 110b, a top wall 110c and a bottom wall 110d and a pair of opposite lateral walls.
  • the pair of opposite lateral walls connect the pair of opposite longitudinal walls 110a and 110b and the top wall 110c to the bottom wall 110d.
  • the housing 110 further includes a plurality of first fluid inlets, particularly, gas inlets 112a and a plurality of first fluid outlets, particularly, gas outlets 112b formed on the opposite lateral walls.
  • the gas inlets 112a and the gas outlets 112b are fluidically connected to each other by gas passages 114 defined by the plurality of plates 116 received in the housing 110.
  • FIG. 1b depicts the flow of the exhaust gases through the gas passages 114.
  • the exhaust gas to be cooled enters the gas passages 114 through the gas inlets 112a by flowing along flow direction depicted by arrow A, thereafter the exhaust gas flows through the gas passages 114 along direction depicted by arrows 114a in the process rejecting heat to the coolant flowing around the gas passages 114.
  • the exhaust gases after rejecting heat to the coolant flowing around the gas passages 114 egresses through the gas outlets 112b by flowing along flow direction depicted by arrow B.
  • the gas passages near to and connected to the gas inlets 112a define gas inlet area 116c.
  • the housing 110 further includes a second fluid inlet, particularly, coolant inlet 122a and a second fluid outlet, particularly, coolant outlet 122b formed on the opposite longitudinal walls 110a and 110b.
  • the coolant inlet 122a is in fluid communication with interior of the housing 110 for ingress of coolant inside the housing 110 and around the gas passages 114.
  • FIG. 1a , FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 depict the ingress and egress of the coolant into and out of the housing 110 respectively.
  • the coolant enters inside the housing 110 and around the gas passages 114 through the coolant inlet 122a by flowing along flow direction depicted by arrow C.
  • Each of the plates 116 include a coolant flow side and a gas flow side, wherein the gas flows in the direction depicted by arrow 114a along the gas flow side of the plates 116 and the coolant flows in direction depicted by arrow 114b along the coolant flow side of the plates 116.
  • the coolant entering inside the housing 110 flows around the gas passages 114 along the direction depicted by arrows 114b that is opposite to the direction 114a of flow of the exhaust gases, in the process the coolant extracts heat from the exhaust gases flowing through the gas passages 114.
  • the coolant outlet 122b is for egress of coolant from inside the housing 110. More specifically, the coolant after extracting heat from the exhaust gases flowing through the gas passages 114 egresses out of the housing 110 through the coolant outlet 122b by flowing along flow direction depicted by arrow D. The gas flow through the gas passages 114 and the coolant flow around the gas passages 114 forms independent circuits, while still providing sufficient surface area of heat exchange between the coolant and the exhaust gas.
  • the coolant inlet 122a and coolant outlet 122b are arranged with respect to the gas inlets 112a and the gas outlets 112b to define cross flow configuration between coolant flow and gas flow in the EGR cooler. More specifically, in the counter flow configuration of coolant and gas flow through the EGR cooler 100, the coolant inlet 122a is disposed near gas outlets 112b, whereas the coolant outlet 122b is disposed near the gas inlets 112a.
  • a diverging tank that is diverging along flow direction is disposed between the coolant inlet 122a and an interior of the housing 110 to achieve smooth transition of flow from the coolant inlet 122a to the interior of the housing 110.
  • the diverging tank ensures uniform distribution of the coolant across the length of the heat exchange plates 116 received in the housing 110 to enhance heat exchange between exhaust gas flowing through the heat exchange plates 116 and coolant flowing across the heat exchange plates 116.
  • the coolant inlet 122a is directly connected to and is in fluid communication with an interior of the housing 110 without any diverging tank disposed there between, accordingly, the overall size and cost of the EGR cooler 100 is reduced.
  • the gas inlet area 116c is the first to come in contact with hot exhaust gases, as such the gas inlet area 116c is prone to formation of hot spots.
  • the coolant is directed to the gas inlet area 116c.
  • the coolant flow reaching the gas inlet area 116c is required to be homogeneous, i.e. velocity of coolant reaching the gas inlet area 116c is required to be same across all heat exchange plates. Accordingly, the EGR cooler with counter flow configuration is preferred over parallel flow configuration.
  • the coolant inlet 122a In case of counter flow configuration, the coolant inlet 122a being farther away from the gas inlet area 116c, the coolant gets sufficient time to homogenize before reaching the gas inlet area 116c.
  • the counter flow configuration has drawbacks associated therewith, particularly, in case of counter flow configuration, the coolant inlet 122a is far away from the gas inlet area 116c and the velocity of the coolant depletes due to coolant striking with inside walls of the housing 110. Accordingly, coolant fails to reach the gas inlet area 116c and fails to provide cooling of the gas inlet area 116c.
  • an arrangement of guides is configured on the plates of the plate type EGR cooler 100 to enable the coolant to reach the gas inlet area 116c for efficient cooling thereof.
  • the at least one plate 116 of the plurality of plates include at least one first guide 116a disposed near the coolant inlet 122a and an array of second guides 116b disposed near the coolant outlet 122b.
  • the at least one first guide 116a prevents coolant entering the housing 110 of the EGR cooler 100 from striking the inside walls of the housing 110, thereby ensuring that the velocity of the coolant entering inside the housing 110 is sufficient to reach the gas inlet area 116c to cause efficient cooling thereof.
  • the at least one first guide 116a is disposed along the coolant flow side of the at least one plate of the plurality of plates 116 and effectively regulates distribution and velocity of coolant directed to the gas inlet area 116c.
  • the at least one first guide 116a is of either one of linear and curved profile.
  • the at least one first guide 116a is a single guide as illustrated in FIG. 1a . As illustrated in FIG.
  • the single guide is having a curved profile that is inclined at an angle ⁇ with respect to a first longitudinal wall 110a of the pair of opposite longitudinal walls 110a and 110b.
  • the at least one first guide 116a includes an array of guides arranged along a first profile that is inclined at an angle ⁇ with respect to the first longitudinal wall 110a, wherein the angle ⁇ is in range of 90 to 0 degrees.
  • FIG. 3 , FIG. 4 and FIG. 5 illustrate different configurations of the first profile along which the array of guides of the at least one guide 116a are arranged.
  • the first profile can have different angle of inclination, for example, in one embodiment depicted in FIG.
  • the first profile is has a comparatively greater angle of inclination as compared to the first profile in accordance with another embodiment depicted in FIG. 4 .
  • the at least one first guide 116a is integrally formed on the plate 116 by at least one of stamping, punching and embossing operation. Accordingly, such configuration eliminates need for additional component such as baffles that are conventionally used for directing the coolant flow, thereby reducing product and process costs associated with configuring such conventional arrangement.
  • the present invention is not limited to any particular configuration and placement of the at least one first guide 116a as far as the at least one first guide 116a prevents coolant entering the housing 110 from striking inside walls of the housing 110 to ensure that the velocity of the coolant entering inside the housing 110 is sufficient to reach the gas inlet area 116c to cause efficient cooling thereof.
  • at least one plate 116 of the plurality of plates received inside the housing 110 is configured with array of second guides 116b only but is without first guide or array of first guides of the at least one first guide 116a.
  • the array of second guides 116b direct the coolant entering in the housing 110 to the gas inlet area 116c to cause efficient cooling of the gas inlet area 116c.
  • the array of guides 116b are disposed along the coolant flow side of the at least one plate of the plurality of plates 116 and effectively regulate distribution and velocity of coolant directed to the gas inlet area 116c.
  • such configuration of the array of second guides 116b creates a barrier between the coolant entering from the coolant inlet 122a and the coolant outlet 122b, to prevent from directly escaping out of the housing 110 through the coolant outlet 122b without extracting heat from the exhaust gases flowing through the gas passages 114.
  • the array of second guides 116b are arranged along a second profile that is diverging away from the gas inlets 112a in direction of flow of coolant towards the coolant outlet 122b.
  • the second profile is parallel to the gas inlets 112a.
  • the second profile is inclined at an angle ⁇ with respect to the first longitudinal wall 110a, wherein the angle ⁇ is in range of 90 to 15 degrees.
  • the second profile terminates near the coolant outlet 122b.
  • the second profile terminates at a distance X from the coolant outlet 122b and preferably upstream thereof in the coolant flow direction.
  • the inclination of the second profile and the distance from the coolant outlet 122b at which the second profile terminates can be selected based on cooling required to be achieved at the gas inlet area 116c by directing the coolant to the gas inlet area 116c.
  • the array of guides 116b are in form of dimples formed by at least one of stamping, punching and embossing operation. Accordingly, such configuration eliminates need for additional component such as baffles that are conventionally used for directing the coolant towards the gas inlet area 116c, thereby reducing product and process costs associated with configuring such arrangement.
  • FIG. 6 illustrates an isometric view of the plate 116 received inside the housing 110 of the EGR cooler 100 configured with at least one first guide 116a and the array of second guides 116b in accordance with an embodiment of the present invention.
  • the number of the at least one first guide 116a and the array of second guides 116b and placement thereof on the plate can vary.
  • the plate type EGR cooler 100 includes plates received inside a housing.
  • the housing includes gas inlets and gas outlets and a coolant inlet and a coolant outlet.
  • the gas inlets and the gas outlets are fluidically connected to each other by gas passages defined by the plates.
  • the coolant inlet and the coolant outlet is for ingress of coolant inside the housing and around the gas passages and egress of the coolant from inside the housing respectively.
  • the coolant inlet and outlet are arranged with respect to the gas inlets outlets to define cross flow configuration between coolant flow and gas flow.
  • At least one of the plates includes at least one first guide formed on a coolant flow side thereof and disposed near the coolant inlet to prevent coolant entering the housing from striking inside walls of housing and an array of second guides formed on the coolant flow side thereof and disposed near coolant outlet to direct the coolant to the gas inlet area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
EP19383212.8A 2019-12-30 2019-12-30 Refroidisseur à recirculation de gaz d'échappement Withdrawn EP3845852A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19383212.8A EP3845852A1 (fr) 2019-12-30 2019-12-30 Refroidisseur à recirculation de gaz d'échappement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19383212.8A EP3845852A1 (fr) 2019-12-30 2019-12-30 Refroidisseur à recirculation de gaz d'échappement

Publications (1)

Publication Number Publication Date
EP3845852A1 true EP3845852A1 (fr) 2021-07-07

Family

ID=69167600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19383212.8A Withdrawn EP3845852A1 (fr) 2019-12-30 2019-12-30 Refroidisseur à recirculation de gaz d'échappement

Country Status (1)

Country Link
EP (1) EP3845852A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1048122A (en) * 1966-08-12 1966-11-09 Nicholson Terence Peter Improvements in and relating to plate type heat exchangers
JPH08105697A (ja) * 1994-10-05 1996-04-23 Kajima Corp 熱交換器
US20080110595A1 (en) * 2006-11-13 2008-05-15 Dana Canada Corporation Heat exchanger with bypass
CN107314699B (zh) * 2017-06-20 2020-02-07 上海交通大学 一种用于换热器的高性能换热片及其换热器

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1048122A (en) * 1966-08-12 1966-11-09 Nicholson Terence Peter Improvements in and relating to plate type heat exchangers
JPH08105697A (ja) * 1994-10-05 1996-04-23 Kajima Corp 熱交換器
US20080110595A1 (en) * 2006-11-13 2008-05-15 Dana Canada Corporation Heat exchanger with bypass
CN107314699B (zh) * 2017-06-20 2020-02-07 上海交通大学 一种用于换热器的高性能换热片及其换热器

Similar Documents

Publication Publication Date Title
KR101341469B1 (ko) 이중 냉각제 루프를 가지는 배기가스 재순환 쿨러
KR101925201B1 (ko) 열 교환 장치
KR101786480B1 (ko) 통합식 다단계 냉각을 구비한 수냉식 과급 공기 냉각기
US20030010479A1 (en) Exhaust gas heat exchanger
US11193722B2 (en) Heat exchanger with multi-zone heat transfer surface
US7774937B2 (en) Heat exchanger with divided coolant chamber
US6827049B2 (en) Water jacket for cylinder head
JP5595079B2 (ja) シリンダヘッドのウォータジャケット構造
US9303596B2 (en) EGR cooler and EGR cooler device using the same
US10914533B2 (en) Intercooler for improved durability
US20080120972A1 (en) Apparatus for cooling exhaust
CN107304734B (zh) 用于车辆的废气再循环冷却器及相关的汽缸体
US10690421B2 (en) Heat exchanger and method of cooling a flow of heated air
EP3872435B1 (fr) Échangeur de chaleur
CN107917012B (zh) 用于气缸盖的水套
KR20180131386A (ko) 일체형 라디에이터
EP3845852A1 (fr) Refroidisseur à recirculation de gaz d'échappement
US11603790B2 (en) Heat exchanger
EP3786567A1 (fr) Refroidisseur egr
EP3808954B1 (fr) Échangeur de chaleur
US20210381472A1 (en) Heat exchanger for gases, in particular engine exhaust gases
EP3786562B1 (fr) Refroidisseur à recirculation de gaz d'échappement
KR102123452B1 (ko) 차량용 egr 쿨러
EP3430340B1 (fr) Échangeur de chaleur pur gaz, en particulier des gaz d'échappement des moteurs
EP3809088B1 (fr) Plaque d'échangeur de chaleur pour une meilleure distribution d'écoulement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211012

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20221201

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230603

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20230412