Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
  • B60H1/2209—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners arrangements of burners for heating an intermediate liquid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H1/2203—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners
  • B60H1/2212—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from burners arrangements of burners for heating air
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2228—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters
  • B60H2001/2234—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters when vehicle is parked, preheating
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2228—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters
  • B60H2001/2237—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant controlling the operation of heaters supplementary heating, e.g. during stop and go of a vehicle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2268—Constructional features
  • B60H2001/2271—Heat exchangers, burners, ignition devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2268—Constructional features
  • B60H2001/2278—Connectors, water supply, housing, mounting brackets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2268—Constructional features
  • B60H2001/2281—Air supply, exhaust systems

Definitions

• the invention relates to a heat exchanger for a mobile heating device having a burner.
• the invention also relates to a mobile heating device with a burner and a heat exchanger and a motor vehicle with a heating device.
• Mobile heaters are used as additional heaters in vehicles to heat, for example, air or water as the heat transfer medium.
• Known applications are the heating of a passenger compartment or the preheating of cooling water of an internal combustion engine of a vehicle.
• a liquid fuel taken from a fuel tank of a vehicle is generally mixed with air and ignited.
• Hot exhaust gases produced during combustion are passed through a heat exchanger and heat a heat transfer medium, which is guided in a guide of the heat transfer medium surrounding the hot exhaust gas.
• a liquid heat transfer medium is often water or a water mixture use, for example, a mixture of 50% water and 50% glycol.
• such a heater is described with a cup-shaped heat exchanger, in which a substantially tubular wall extends stepwise to a burner. Exhaust gas flows through an interior of the tubular wall, which heats a heat carrier flowing along the outside of the tubular wall.
• the heat exchanger has a carrier body with an inner side and an outer side, wherein the inner side is formed as an inner exhaust duct for guiding exhaust gas of the burner, and arranged between the inside and outside of the carrier body guide, which is adapted to guide a heat transfer medium wherein the heat transfer medium via the inside of the support body in heat-transmitting contact with the exhaust gas flowing in the inner exhaust passage, wherein on the outside of the support body, an outer exhaust gas duct for guiding exhaust gas of the burner is provided and wherein the heat transfer medium via the outside of the support body in heat-transmitting contact stands with flowing in the outer exhaust gas exhaust.
• the heat transfer medium is not only in heat-transferring contact with exhaust gas via one side, but also via the inside as well as outside. This results in a significantly larger heat transfer surface, whereby heat energy of the exhaust gas can be transferred even more efficiently to the heat transfer medium.
• thermal efficiencies of over 90% can be achieved.
• a higher heating capacity is achieved with the same energy costs or achieved a desired heating capacity with lower energy costs.
• energy saving options For example, a blower power for supplying combustion air to the burner can be reduced, thereby saving electric power. This can also reduce acoustic emissions.
• exhaust gases are cooled even further than in the prior art, whereby the exhaust system is facilitated.
• the exhaust system which are too sensitive for higher exhaust gas temperatures. It may possibly even be dispensed with a complicated exhaust system.
• the lower exhaust gas temperature and associated lower flow rate of the exhaust gas upon leaving the heat exchanger contributes to a reduction of the noise generated by the exhaust gases. This may possibly affect the installation of a muffler be omitted, resulting in a more compact design.
• the inside and the outside of the support body are formed in terms of area significantly larger than possibly additionally present transverse sides. It can be provided that the inside is the burner of the heater facing side of the carrier body. It is particularly expedient if the exhaust gas flow from the burner partially or completely flows into the inside.
• the outer side can be directed to the external environment of the carrier body, in which, for example, further components arranged in a motor vehicle can be located.
• a flow space for heat transfer medium can be provided between a inner wall and an outer wall of the carrier body. It is advantageous for guiding the heat transfer medium guide elements, such as ribs to provide in this flow space to allow a well-defined flow of the heat transfer medium.
• heat exchange fins may be directed toward the exhaust gas flow to increase the heat exchange surface on the inner wall and / or be directed to the inner wall facing the flow of the heat transfer medium. It is likewise possible to additionally or alternatively direct such heat exchange ribs to the exhaust gas flow on the outer wall and / or to arrange them directed on the outer wall to the flow of the heat transfer medium.
• Heat exchange ribs in contact with the exhaust gas flow or the flow of the heat transfer medium can serve in addition to their heat exchange function for guiding the respective stream.
• the carrier body can be embodied both in one piece and in several pieces. It is particularly expedient to form the carrier body substantially cylindrical or tubular. One end of the carrier body can be closed by a bottom. Such a bottom can be made particularly easily in one piece with a tubular part of the carrier body and ensures a gas-tight closure of the inside of the carrier body at its end.
• a burner can be sealingly provided at an opening at the other end of the carrier body, to which combustion air and fuel are supplied via one or more lines.
• a heat transfer medium or heat transfer both gaseous and liquid media can be used, such as air or water.
• a particularly suitable heat transfer medium is a mixture of glycol and water.
• the carrier body has at least one inlet for heat transfer medium and an outlet for heat transfer medium.
• the carrier body may have a carrier body longitudinal direction, which may extend in the direction of its greatest longitudinal extent.
• a main extension direction of the heat exchanger can run parallel to the carrier body longitudinal direction.
• the main extension direction may be parallel to a longitudinal direction of a flame tube of a burner; In this case, the main direction of extension and the longitudinal direction of the support body may coincide. But do not do that.
• Wall surfaces extending transversely to the main extension direction can be regarded as bottom surfaces of the heat exchanger.
• a transverse to the main extension direction outer wall or outer wall surface of the outer exhaust gas guide may act as a bottom surface of the outer exhaust duct and / or the heat exchanger.
• Transverse to the carrier body longitudinal direction extending wall surfaces of the carrier body may be referred to as bottom surfaces of the carrier body.
• the heat exchanger comprises an exhaust pipe connecting the inner exhaust gas guide and the outer exhaust gas guide. This allows exhaust gas to be directed from the inside to the outside or vice versa.
• the exhaust pipe may be designed as a curved pipe connection. It is conceivable that the exhaust pipe comprises or consists of two interconnected shells. The shells can be connected to each other gas-tight. Each shell may have one or more than one connection flange. It is conceivable that the shells are connected to one another in a gastight manner via the connecting flanges.
• one or more guide webs may be formed. In particular, it is conceivable that a guide web extends substantially centrally through the exhaust pipe.
• the guide bar can function as a flow divider and in particular reduce or avoid undesirable turbulence or detachment of turbulences in the exhaust pipe.
• the exhaust pipe may have two or more bends. It is particularly conceivable that the exhaust pipe is formed substantially U-shaped.
• the exhaust gas line may be designed to divert an exhaust gas stream flowing in it, which flows in one direction, in a direction substantially opposite thereto. It can be provided that the exhaust pipe is arranged wholly or at least partially outside of the heat carrier body and / or the outer exhaust system.
• a distance space can be arranged between a wall of the exhaust pipe facing the outer exhaust gas duct or a jacket of the outer exhaust gas duct and / or the heat carrier body. The distance space can be freely accessible to the outside.
• an outlet of the inner exhaust duct can flow through the exhaust gas from the inside of the carrier body to the outer exhaust duct.
• the outer exhaust gas duct has at least one exhaust gas inlet, via which exhaust gas from the inner exhaust gas duct and / or the exhaust gas line can enter into the outer exhaust gas duct.
• the outer exhaust gas duct may have at least one exhaust gas outlet, via which exhaust gas can flow out of the outer exhaust gas duct.
• the exhaust gas can be removed for example via a pipe.
• the tube may be a plastic tube. It is conceivable that at the heat exchanger a burner ner is arranged or fixed. The burner may have a flame tube. The flame tube may be wholly or at least partially received on the inside of the heat exchanger.
• the flame tube is at least partially received in an inner region of the carrier body.
• an inner exhaust gas flow space may be formed, which is designed to guide exhaust gas.
• the inner exhaust gas guide may be at least partially formed by a wall of the flame tube and a wall facing the carrier body.
• the heat exchanger is set up in such a way that exhaust gas flows through the inner exhaust gas duct before it flows through the outer exhaust gas duct.
• the burner is arranged in the interior of the carrier body or arranged such that the burner exhaust gases first flow into the inside before they flow to the outside.
• exhaust gas flowing on the outside is already cooled by previous heat-transferring contact with heat transfer medium in the interior of the carrier body, and the heat load outside the heat carrier arranged components such as vehicle components is kept low.
• the outer exhaust system may further comprise one or more exhaust gas inlets and one or more exhaust outlets.
• a muffler or a muffler device is provided in the outer exhaust system.
• a noise pollution by the heat exchanger can be reduced, without the need for an additional external silencer device must be provided.
• the silencer device can be made relatively small. As a result, a more compact system is available overall.
• the muffler device may comprise sound-absorbing or sound-damping material.
• the sound absorbing material may be disposed directly in the outer exhaust duct.
• the sound-damping material is arranged on a part of a wall of the outer exhaust system.
• the muffler device or the sound-damping material may be provided on a bottom surface of the heat exchanger, for example on a bottom surface of the outer exhaust system.
• a holding device such as a perforated grid can be provided to the sound-absorbing material in the outer exhaust duct to keep. Sound absorbing material may be arranged to be in contact with exhaust gas flowing through the outer exhaust passage during operation. It may be expedient if the muffler device is arranged in a region of the outer exhaust gas guide, in which exhaust gas flows around the carrier body. It can be provided that an exhaust gas flow flows past on one side of the muffler device and on a side opposite to the exhaust gas flow side on the carrier body.
• the muffler comprises rock wool and / or glass fiber wool as a sound-damping material.
• This provides a simple and inexpensive way to arrange a muffler in the outer exhaust system.
• the muffler may include one or more lambda / 4 resonant sections or Kundt tubes.
• the one or more Kundt tubes are expediently set to one or more frequencies generated during operation of the heat exchanger or the heating. This allows a simple and efficient way to achieve a sound attenuation.
• guide ribs for guiding the exhaust gas are provided in the outer exhaust gas duct.
• the exhaust stream can easily lead or guide.
• the guide ribs define a preferred flow direction or a desired flow field between an inlet of the outer exhaust duct and an outlet of the outer exhaust duct.
• individual guide ribs in a direction in which they carry a flow, and / or their longitudinal direction straight or have a curvature.
• a plurality of guide ribs run parallel to each other. With an arrangement of a plurality of guide ribs, it can be provided that at least some of them do not run parallel to one another in the direction in which they guide a flow and / or their longitudinal direction.
• the guide ribs may be provided on the carrier body.
• the guide ribs may be formed on the carrier body or attached thereto.
• the heat carrier body is made of a cast material.
• the guide ribs can then be formed directly during casting of the carrier body.
• Formed on the support body guide ribs can also serve to transfer heat to the heat transfer medium.
• an exhaust gas inlet and an exhaust gas outlet of the outer exhaust pipe are arranged side by side in a circumferential direction.
• the outer exhaust gas guide can be designed in such a way that an exhaust gas flow results, which circulates at least a large part of the circumference of the carrier body, from the inlet to the outlet reach.
• guide ribs and / or flow obstacles may be provided, for example to prevent exhaust gas flowing directly from the inlet to the outlet.
• a labyrinth for guiding the exhaust gas may be provided in the outer exhaust passage.
• guide ribs may be provided to form the labyrinth.
• the outer exhaust gas duct prefferably has a casing of the carrier body, which may in particular be a casing of an outer wall of the carrier body. It is particularly advantageous if an exhaust gas flow space is provided between the casing of the carrier body and the carrier body, in which, for example, guide ribs or a labyrinth can be arranged. It can be provided that the outer exhaust duct or the casing partially surrounds the carrier body radially and / or in the longitudinal direction. For example, it is possible to provide room for additional components, such as temperature sensors for measuring the temperature of the heat transfer medium. However, it can also be provided that the outer exhaust gas duct or its casing surrounds the carrier body substantially completely and / or radially in the longitudinal direction.
• the sheath may be made of heat-insulating material to prevent exhaust heat from leaking to the outside.
• the sheath can be designed in several parts. It may be provided that a part of the casing is designed in the form of a lid, which is at least partially pushed over the carrier body. It is conceivable that a cover is arranged such that it completely or at least partially surrounds the carrier body in the carrier body longitudinal direction and / or with respect to a peripheral circumference of the main extension direction or the carrier body longitudinal direction.
• a cover of the sheath may be gas-tightly connected to a further sheath part, such as a sheath. The cover or the sheath can be attached to the carrier body.
• the cover and / or the casing is screwed to the carrier body by means of screws, for example self-tapping screws. Between the casing and / or cover of the casing and possibly existing guide ribs in the outer exhaust gas duct, a distance can be set.
• a silencer may be provided, which may in particular comprise a sound-absorbing or sound-damping material.
• the sound-absorbing or sound-damping material can be held, for example, by a perforated grid in the lid.
• the sound absorbing material is on a lid bottom arranged the sheath.
• An exhaust gas stream may be directed from an inlet to an outlet of the outer exhaust gas guide such that it flows past the lid bottom or the sound-absorbing material.
• the shroud and / or a cover of the shroud may have guiding ribs projecting into the exhaust gas flow space of the outer exhaust duct.
• Such guide ribs may be provided as an alternative or in addition to guide ribs arranged on the carrier body.
• An exhaust gas flow distributor may also be provided, which is set up to distribute an exhaust gas flow from the burner to at least two separate partial flows.
• the exhaust gas flow distributor is further configured to supply at least a partial flow of the inner exhaust gas guide and a partial flow of the outer exhaust gas guide.
• a mobile heater having a burner and a heat exchanger as described above is also proposed.
• a heater is suitable as additional heater, heater or heater for a vehicle. It is particularly advantageous if the burner is arranged inside the inner exhaust gas guide, or such that burner exhaust gases can pass directly after leaving the burner on an inner side of the carrier body in heat-conducting contact with a heat transfer medium or an inner wall of the carrier body.
• the heater may include an exhaust fan to assist in the flow of exhaust gas.
• the exhaust fan may in particular be provided downstream of an exhaust outlet of the outer exhaust duct and be adapted to suck exhaust.
• FIG. 1 Show it: schematically an example of a heat exchanger according to the prior art in a sectional view; a schematic representation of a heat exchanger with an outer exhaust duct in a sectional view; a further schematic representation of a heat exchanger with an outer exhaust duct in a view from below; and another schematic representation of a heat exchanger with an outer exhaust duct in a plan view. a further schematic representation of a heat exchanger in a sectional view, in which a burner with flame tube can be seen.
• FIG. 6 is a cross-sectional view of an exhaust pipe; such as
• FIG. 7 shows a cross-sectional view of a heat exchanger in which guide ribs arranged on the carrier body can be seen.
• FIG. 1 shows schematically an example of a heat exchanger 10 according to the prior art.
• the heat exchanger 10 comprises a carrier body 12, which is cup-shaped and has an inner side 14 and an outer side 15.
• the support body 12 further has on the inside an inner wall 16 and on the outside an outer wall 18 surrounding this, between which a flow space 20 for a heat transfer medium is formed.
• Fixed to the carrier body 12 in a known manner is a carrier ring 22; which has an inlet for the heat transfer medium 24 and an outlet for the heat transfer medium, not shown, and allows inflow and outflow of heat transfer medium into the flow space 20.
• a seal may be provided to seal the carrier body 12 gas-tight.
• the inner wall 16 and outer wall 18 are formed of thermally conductive material, such as an aluminum or steel alloy.
• ribs are provided on the inner wall 16 on the inside.
• the exhaust gas flow originates from a burner, not shown, arranged inside the space formed inside and is fed by the burner into this space formed on the inner side 14 of the carrier body 12.
• the exhaust stream is surrounded by the inner wall 16, the inner side 14 is thus formed as an inner exhaust duct.
• an exhaust gas outlet 26 is provided, through which exhaust gas is discharged from the inside 14 of the heat exchanger 10, after it has given off a large part of its heat content via the inner wall 16 to the heat transfer medium.
• a mixture of 50% water and 50% glycol is used as the heat transfer medium.
• the heated heat transfer medium can be supplied via the outlet for the heat transfer medium to an outer heating circuit, not shown, and circulated via the inlet for the heat transfer medium 24 back into the flow space 20 to be reheated.
• FIG. 2 schematically shows a view corresponding to the view in FIG. 1 of a further heat exchanger 100, which differs substantially from the heat exchanger 100 shown in FIG. 1 due to the presence of an outer exhaust gas guide 102 on the outer side 15.
• the outer exhaust system 102 has an exhaust gas inlet 105, which via a schematically illustrated exhaust pipe
• the outer exhaust guide 102 comprises a casing 106, which is arranged such that an exhaust gas flow space 108 is formed between the outer wall 18 and the casing 106.
• exhaust gas flows on the inner side 14 in heat-conducting contact with the inner wall 16 and gives off heat to the heat transfer medium in the flow space 20.
• the already cooled exhaust gas is passed to the outer exhaust gas guide 102 and flows around the flow space 20 from the outside.
• the outer wall 18 made of thermally conductive material, which may have guide ribs or heat exchange ribs, not shown, the exhaust gas is in heat-conducting contact with the heat transfer medium in the flow space 20 and continues to deliver heat to the heat transfer medium.
• the casing 106 does not extend completely in the longitudinal direction about the carrier body 12. As a result, for example, sensors for monitoring the temperature of the heat transfer medium or combustion air or fuel supply lines may be arranged on the carrier body without lines through the casing
• FIG. 3 schematically shows a view of a heat exchanger 100 from below.
• ribs 110 can be seen, which direct the exhaust gas flow in the outer exhaust duct 102 as desired, in order to achieve the highest possible heat exchange with the heat transfer medium via the outer wall 18.
• the exhaust gas flow is guided essentially in each case in successive parallel paths in the opposite direction.
• an outer exhaust outlet 112 is shown, through which cooled exhaust gas can leave the outer exhaust duct. It can be seen that the sheath 106 does not completely cover the outer wall 18 in the longitudinal direction.
• the exhaust gas outlet 26 does not necessarily have to be arranged on the carrier body 12, it may also be provided, for example, in a carrier ring 22, as indicated in FIG. 3 without depiction of the carrier ring.
• FIG. 4 shows a further schematic view of a heat exchanger 100 from above, which may be a heat exchanger 100 as shown in FIG.
• a carrier ring 22 is shown, on which an inlet for the heat transfer medium 24 and an outlet for the heat transfer medium 25 are provided.
• an outer region of the outer wall 18 is shown, which is not covered by the sheath 106 or support ring 22 and flows in the exhaust gas only on the inner side 14. Furthermore, a region corresponding to the exhaust gas flow space 108 can be seen.
• exhaust gas flows both on the outside of the carrier body 12, namely in the exhaust gas flow space 108, as well as on the inside 14 and is in heat-transmitting contact with the heat transfer medium in the intermediate flow space 20 for the heat transfer medium.
• the inner side 14 and the flow space 20 are not visible.
• An extension 114 extends over a part of the casing 106 and a part of the outer wall 18 not surrounded by the casing 106.
• the casing 106 can also be arranged such that it does not run below the extension 1 14, but around it ,
• sensors, connections for electrical or electronic components or connections for combustion air or fuel for operating a burner can be provided on the extension 1 14.
• FIG. 5 schematically shows a sectional view of a heat exchanger 100 with a burner 120.
• the burner 120 may be fastened to the heat exchanger 100 in a suitable manner, for example by screwing.
• the burner 120 has a flame tube 122 protruding into the interior of the carrier body 12.
• the carrier body 12 or the flow space for the heat transfer medium is marked with transverse bars.
• the flame tube 122 may form a circumferential wall about a flame generated by the burner 120. It may also be provided that the flame tube 122 is provided with holes for improving the flow properties.
• the flame tube 122 is open. In operation, the burner 120 generates a flame within the flame tube 122, which may possibly protrude slightly above the flame tube 122, depending on the setting.
• Exhaust gases generated by the burner 120 flow out of the flame tube 122 and may flow between the inner wall of the carrier body 12 and the outer wall of the fire tube 122 to the outlet 26.
• possible directions of flow of exhaust gas are indicated by arrows.
• an inner exhaust gas guide between the flame tube 122 and the support body 12 and an inner wall 16 of the support body 12 is formed.
• the burner 120 is arranged or adjusted such that its flame does not abut directly against the inner wall 16 of the carrier body 12. As a result, excessive point heating of the carrier body material and the heat transfer medium can be avoided.
• the sheath 106 has a cover 124.
• the lid is pushed gas-tight onto a casing 126 surrounding the carrier body 12.
• the jacket 126 has a clamping receptacle 128 on which an inner circumference of the cover 124 is pushed.
• the cover is fastened to the carrier body 12 via a screw connection 130. From the screw 130, a screw is shown, which is received in a corresponding receptacle of the carrier body 12.
• a corresponding screw guide is provided in the lid 124.
• the lid 124 is fastened to the carrier body 12 via a plurality of similarly arranged screws, for example via three screws.
• sound-absorbing material 134 is arranged in a bottom 132 of the cover 124.
• the sound-absorbing material 134 is held by a perforated plate 136 at the bottom, to avoid that passing exhaust gas removes material.
• cover guide ribs 138 are provided, four of which are indicated. There may be more than four cover guide ribs 138.
• the cover guide ribs 138 are disposed on the inside of the lid 124 so as to protrude into the exhaust gas flow space 108 of the outer exhaust passage. It is expedient if guide ribs are also provided on the carrier body 12. are formed, which protrude into the exhaust gas flow space 108.
• the exhaust outlet 26 and the exhaust gas inlet 105 are connected by an exhaust pipe, which in this example is formed as a pipe joint 140.
• the pipe joint 140 extends outside of the shroud 106.
• the pipe connection 140 is preferably designed such that a smooth flow guidance without edges results, at which turbulences can form and / or detach.
• the pipe joint 140 is formed substantially U-shaped.
• FIG. 6 shows a cross-sectional view of a pipe connection 140 which can be used, for example, in the arrangement shown in FIG.
• the pipe joint 140 comprises a first pipe shell 142 and a second pipe shell 144.
• the first pipe shell 142 has first connection flanges 146, 147, while the second pipe shell 144 has second connection flanges 148, 149.
• the pipe shells 142, 144 are gas-tightly connected to each other, for example by screwing, riveting, welding and / or gluing.
• a first guide bar 150 is arranged, which extends centrally within an inner tube radius of the first tube shell 142.
• the guide bar 150 expediently extends from the outlet 26 to the inlet 105.
• a second guide bar 152 which is opposite the first guide bar 150 within the tube connection 140, is likewise provided in the second tube dish 144.
• the guide webs 150, 152 may be in the middle of touching, or as shown, at a certain distance from each other.
• the pipe joint 140 can be easily designed to provide a desired flow effect.
• the pipe joint 160 of this example is placed on an outlet port of the outlet 26 and an inlet port of the inlet 105 and held via a clamping connection. Other suitable types of connection are also conceivable.
• FIG. 7 shows a cross-sectional view of a heat exchanger 100, in which guide ribs 160 arranged on the carrier body 12 can be seen.
• the guide ribs are formed on the carrier body 12. They are designed to allow a desired flow around the carrier body 12 through exhaust gases flowing into the inlet 105. lochrangn. For this purpose, a flow field is generated around the carrier body 12 by the guide ribs 160.
• Guide ribs 160 may be straight or at least partially curved in a longitudinal direction and / or in a direction in which they carry an exhaust gas flow to produce a desired flow with a suitable pressure drop. Exhaust gas, after it has flowed around the carrier body 12, can flow out of the heat exchanger 100 via the exhaust gas outlet 1 12.
• the exhaust gas in the exhaust gas flow space 108 is distributed as desired.
• a flow barrier 162 may be provided, which prevents exhaust gas from flowing directly from the inlet 105 to the outlet 112, without giving off heat to the carrier body 12 or the medium therein.
• three receptacles 164 can be seen in FIG. 7, which serve to receive screws of a screw connection 130.
• a casing 106 or a cover 124 of a casing can be fastened to the carrier body 12.
• the carrier body shown in FIG. 7 is suitable for use in all arrangements described so far. It is conceivable that guide ribs are also arranged on the inside of the casing in order to produce the desired flow field together with the guide ribs 160 of the carrier body 12.

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• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43795161

Family Applications (1)

Country Status (7)

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Citations (2)

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• 2009
  • 2009-11-25 DE DE102009055686A patent/DE102009055686A1/de not_active Withdrawn
• 2010
  • 2010-11-23 RU RU2012126128/11A patent/RU2523866C2/ru not_active IP Right Cessation
  • 2010-11-23 KR KR1020147025594A patent/KR20140119196A/ko not_active Application Discontinuation
  • 2010-11-23 KR KR1020127015740A patent/KR20120084799A/ko active Application Filing
  • 2010-11-23 CN CN201080053415.5A patent/CN102666160B/zh not_active Expired - Fee Related
  • 2010-11-23 EP EP10803345A patent/EP2504184A1/de not_active Withdrawn
  • 2010-11-23 WO PCT/DE2010/001368 patent/WO2011063792A1/de active Application Filing
  • 2010-11-23 US US13/511,489 patent/US20120286053A1/en not_active Abandoned

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