摘要:
A flow channel for a heat exchanger for exchanging heat between a first fluid and a second fluid, the flow channel having, perpendicular to a flow channel axis, a cross-section that can be traversed, the flow channel providing for an improved transfer of heat with an acceptable drop of pressure and a reduced risk of blocking. The flow channel has a hydraulic diameter, defined as quadruple the ratio between the surface of the cross-section that is traversed and the perimeter that can be moistened by the fluid, of between 1.5 mm and 6 mm. Also a heat exchanger having a plurality of flow channels of this type, through which the first fluid flows and fluidically connected by a fluid connection. Also a charge-air system and an exhaust gas recycling system having such flow channels.
摘要:
An extruded tube for a heat exchanger is provided that includes two at least approximately parallel outer side walls that extend in a longitudinal direction and a transverse direction of the extruded tube and that are connected by two outer narrow sides in a vertical direction of the extruded tube, wherein at least one continuous web extends between the side walls in the longitudinal direction and in the vertical direction and separates at least two ducts of the extruded tube, and wherein at least one of the outer side walls has embossings that serve to form both bulged portions that project into the ducts of the side walls and also bulged portions that extend substantially in the transverse direction of the web, wherein the bulged portions of the at least one web have a controlled orientation with respect to the transverse direction.
摘要:
The invention relates to a heat exchanger, particularly for a motor vehicle, comprising a plurality of exchanger tubes (3) attached to at least one floor for conveying a first fluid, wherein the exchanger tubes (3) are disposed in a housing through which a second fluid flows, wherein a holding member (5) is disposed inside the housing, wherein at least two of the exchanger tubes (3) are supported relative to one another by means of the holding member (5).
摘要:
The invention relates to a heat exchanger for a motor vehicle, comprising a first flow path (1) with a number of flow conduits (6) for conducting a fluid to be cooled, a deflection region (13), situated downstream of the first flow path (1) and a second flow path (2), situated downstream of the deflection region (13). According to the invention, the flow conduits (6) of the first flow path (1) continue in the deflection region (13) and the second flow path (2) as continuous separate flow conduits (6). The invention also relates to a flow conduit (41, 41′, 61, 61′, 71, 71′, 81, 81′, 91, 91′) for a heat exchanger (30, 40) for exchanging heat between a first fluid (31) and a second fluid (33), comprising: a conduit casing (63, 63′, 73′, 83, 83′, 93, 93′) with an interior (67) that is surrounded by an inner face (65) of the conduit casing; and a number of struts (69, 79, 79′, 89, 89′, 99) that are located in the interior (67) on the inner face (65) of the conduit casing. The flow conduit (1) has a traversable cross-section, running transversally to a flow conduit axis (94) and designed to conduct the first fluid (31) in the interior (67). The aim of the invention is to guarantee an improved transfer of heat with a simultaneous acceptable pressure drop, whilst reducing the blocking risk. To achieve this, a hydraulic diameter, defined as the quadruple of the ratio of the surface area of the traversable cross-section to a circumference that can be wetted by the fluid, lies within a range of 1.5 mm to 6 mm. The invention discloses a heat exchanger (30, 40) that has a block containing a number of flow conduits (41, 41′, 61, 61′, 71, 71′, 81, 81′, 91, 91′) of this type, which are traversed by the first fluid (31) and are fluidically connected to a fluid connection. The invention also relates to a charge air system, an exhaust gas recirculation system and to the use of said heat exchanger.
摘要:
The invention relates to a heat exchanger, especially for cooling exhaust gases. Said heat exchanger comprises at least one first flow channel (2) of a fist medium, especially a gas, at least one second flow channel (3) of an at least second medium especially a cooling medium, at least one first disk (4), at least one second disk (5), the first disk and the second disk being interconnected and defining the first flow channel of the first medium, at least one housing element (6), especially a first housing element (7) and a second housing element (8) defining, together with the first disk and the second disk, the second flow channel of the second medium, wherein the first housing element can be cooled by the second medium.
摘要:
The invention relates to an exhaust gas heat exchanger, in particular, to an exhaust gas cooler for exhaust gas recirculation in a motor vehicle comprising heat exchanging channels (3) which are coolable by a fluid and passed through by the exhaust gas, wherein the inventive exhaust gas heat exchanger (1) is integrated into an oxidation catalyst comprising a support provided with an oxidation catalyst coating (6) in such a way a deposit (5) is formed in the channels (3).
摘要:
The invention relates to a heat exchanger, particularly for a motor vehicle, comprising a plurality of exchanger tubes (3) attached to at least one floor for conveying a first fluid, wherein the exchanger tubes (3) are disposed in a housing through which a second fluid flows, wherein a holding member (5) is disposed inside the housing, wherein at least two of the exchanger tubes (3) are supported relative to one another by means of the holding member (5).
摘要:
A heat exchanger, particularly an exhaust gas heat exchanger, for transferring heat in two stages between a first fluid and second and third fluids that have different temperatures includes a block for separately conducting the first and second and third fluids in a heat transferring manner. The block encompasses a number of ducts through which the first fluid can flow, a first chamber of a high-temperature part through which the second fluid can flow and which accommodates the ducts, a second chamber of a low-temperature part through which the third fluid flows and which accommodates the ducts, and a housing in which the first and second chamber as well as the ducts are arranged. The first chamber and the second chamber are separated from one another by a separation area that is mounted in a groove.
摘要:
The invention relates to a heat exchanger, particularly for a motor vehicle, comprising at least one duct (24-29) through which a fluid flows and of which at least some section have a curved shape. Preferably, said heat exchanger comprises several ducts through which a fluid flows and of which at least some sections have a curved shape. In order to increase the heat exchanging capacity, the duct (24-29) of which at least some sections have a curved shape is provided inside a profiled extruded element.
摘要:
A flow channel for a heat exchanger for exchanging heat between a first fluid and a second fluid. The flow channel comprises a channel cover provided with a space surrounded by an inner side of the channel cover; a plurality of partitions that are arranged on the inner side of the channel cover in the space. The flow channel having, perpendicular to a flow channel axis, a cross-section that can be traversed and embodied for guiding the first fluid in the inner chamber. Thereby an improved transfer of heat is ensured with a more acceptable drop of pressure and a reduced risk of blocking. As a result, a hydraulic diameter in the region of between 1.5 mm and 6 mm, defined as the quadruple of the ratio between the surface of the cross-section that is traversed and the perimeter that can be moistened by the fluid. The invention also relates to a heat exchanger comprising a block having a plurality of flow channels of said type, through which the first fluid flows and fluidically connected by a fluid connection. The invention further relates to a charge-air system, an exhaust gas recycling system and to a use of the heat exchanger.