WO2016140068A1 - 熱交換器、及び該熱交換器を備えた排気熱回収装置 - Google Patents
熱交換器、及び該熱交換器を備えた排気熱回収装置 Download PDFInfo
- Publication number
- WO2016140068A1 WO2016140068A1 PCT/JP2016/054697 JP2016054697W WO2016140068A1 WO 2016140068 A1 WO2016140068 A1 WO 2016140068A1 JP 2016054697 W JP2016054697 W JP 2016054697W WO 2016140068 A1 WO2016140068 A1 WO 2016140068A1
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- Prior art keywords
- housing
- heat exchange
- cooling medium
- gas
- exhaust
- Prior art date
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- 238000011084 recovery Methods 0.000 title claims description 54
- 239000002826 coolant Substances 0.000 claims abstract description 94
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 10
- 238000005192 partition Methods 0.000 description 16
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000037237 body shape Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/04—Arrangements of liquid pipes or hoses
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
- F28D7/1692—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section with particular pattern of flow of the heat exchange media, e.g. change of flow direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- 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
- F28D9/0031—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 the conduits for one heat-exchange medium being formed by paired plates touching each other
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- 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
- F28F1/24—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 transversely
- F28F1/30—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 transversely the means being attachable to the element
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- 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
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
-
- 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
- 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
- F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
-
- 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
-
- 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
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
-
- 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
- F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
-
- 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
- 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
- F28F9/007—Auxiliary supports for elements
-
- 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
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/02—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat exchanger
-
- 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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/18—Heater
-
- 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
- F28D9/0062—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 the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
- F28D9/0068—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 the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2240/00—Spacing means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the present invention relates to a heat exchanger and an exhaust heat recovery device including the heat exchanger, and more particularly to a heat exchanger and an exhaust heat recovery device suitable for an internal combustion engine.
- Patent Document 1 discloses an “exhaust heat recovery device including a heat exchanger that performs heat exchange with exhaust gas, a bypass path that bypasses the heat exchanger, and a valve body that opens and closes the bypass path.
- Patent Document 1 discloses that “an inlet cone, an outlet cone, a bypass pipe, and a heat exchanger are fitted and fixed in an airtight manner by welding or the like. A configuration is disclosed in which the pipe and the upstream end of the heat exchanger are fitted, and the outlet cone is fitted with the bypass pipe and the downstream end of the heat exchanger (described in paragraph [0013] of Patent Document 1).
- Patent Document 2 states that “a plurality of heat transfer tubes through which exhaust gas flows are stacked, and the stacked heat transfer tubes are housed in a core case, and a medium is introduced into the core case. And a discharge port for discharging the medium heated by the heat transfer tube, the medium flows from the introduction port toward the discharge port, and exhaust gas flows in the heat transfer tube.
- the medium flowing to the outer periphery is heated by the heat of the exhaust gas, and at least three heat transfer tubes are stacked, and three or more heat transfer tubes are stacked, so that the space between the upper surface of the heat transfer tube and the core case is increased.
- the flow path formed between the heat transfer tube and the heat transfer tube and between the lower surface of the heat transfer tube and the core case is formed in four or more layers in a cross-sectional view, and the side surface of the heat transfer tube and the core case In between, the medium is another layer Heat exchanger interlayer path of moving is formed "was is disclosed a configuration for" closing any interlayer path in the passage closing means "has been proposed (described in paragraph Patent Document 2 [0009]).
- Patent Document 2 states that “the exhaust heat recovery device is connected to an introduction member into which exhaust gas generated in an internal combustion engine is introduced, and is connected to the introduction member via an upper passage and is supported by the gas inflow member.
- a heat exchanger a gas outflow member connected to the rear end of the heat exchanger and flowing exhaust gas that has passed through the heat exchanger, and a lower portion provided below the heat exchanger and flowing exhaust gas not flowing through the upper passage A passage, a thermoactuator that is supported by an actuator support of the medium discharge section and that operates at the temperature of the medium, and a valve mechanism that is provided at the tip of the thermoactuator and adjusts the amount of exhaust gas that flows through the upper passage '' Is disclosed (described in paragraph [0032] of Patent Document 2; however, the added reference is omitted).
- Patent Document 1 “9 heat transfer tubes” are used, and when applied to an exhaust heat recovery device, “the inlet cone has a heat exchange with a bypass pipe. The upstream end of the vessel is fitted, and the outlet cone is fitted with the bypass pipe and the downstream end of the heat exchanger.
- Patent Document 2 a heat exchanger of “three or more heat transfer tubes” is used, and when applied to an exhaust heat recovery device, “an introduction member into which exhaust gas generated in an internal combustion engine is introduced”. And a heat exchanger connected to the introduction member via an upper passage and supported at the front end by a gas inflow member, and a gas outflow through which exhaust gas connected to the rear end of the heat exchanger and passed through the heat exchanger flows. It is set as the structure provided with the member.
- an object of the present invention is to enable further miniaturization with a small number of components in a heat exchanger that performs heat exchange between exhaust gas and a cooling medium.
- the present invention also relates to an exhaust heat recovery apparatus that recovers exhaust heat by exchanging heat between exhaust gas passing through a bypass flow path of an internal combustion engine with a cooling medium in a heat exchanger, and including the bypass flow path. It is an object of the present invention to provide an exhaust heat recovery device that can perform small and efficient heat recovery by appropriately configuring the above.
- the present invention provides a heat exchanger for exchanging heat between an exhaust gas and a cooling medium in a housing, wherein a plurality of heat exchanging segments arranged in parallel in the housing, A sealing member that is liquid-tightly joined to the housing and supports the plurality of heat exchange segments so as to form a coolant flow path in each gap between the heat exchange segments adjacent to each other;
- Each heat exchange segment constituting the heat exchange segment has an opening on only one surface, and at least the outside of the opening is liquid-tightly sealed by the sealing member, and accommodated in the casing
- a plurality of flow paths that allow only an exhaust gas flow in a predetermined direction, and a guide member having a gas introduction flow path and a gas discharge flow path on the upstream side and the downstream side of the plurality of flow paths,
- At the opening of each said housing And it has a gas inlet port communicating with the gas inlet passage, in which a structure having a gas discharge port communicating with the gas discharge channel.
- the casing may be formed in a rectangular parallel
- each of the guide members of the plurality of heat exchange segments includes a fin formed in a wave shape having a continuous S-shaped cross section, in which one heat exchange plate is bent, and One side surface of the fin extending direction shields the opening of the housing between the gas inlet and the gas outlet, and both end surfaces of the fin communicate with the gas inlet and the gas outlet, respectively. It is good to have a configuration arranged as described above.
- the heat exchanger is interposed between a cooling medium inlet and a cooling medium outlet formed in the housing and communicating with the cooling medium flow path, and between the cooling medium inlet and the cooling medium outlet. It is good to have a current plate.
- the rectifying plate may have a comb shape, and a part of comb teeth constituting the comb shape may be configured such that the plurality of heat exchange segments are interposed in gaps adjacent to each other. Further, the rectifying plate has a bent portion in which a tip of a part of comb teeth constituting the comb shape is bent, and a cooling medium guide path for each gap is formed by the bent portion. It may be configured.
- the housing of each of the plurality of heat exchange segments has at least one convex portion at the same position on each side surface adjacent to each other, and the convex portion is the cooling medium. It may be arranged in the flow path.
- the sealing member has a plurality of slits formed in parallel, and the outside of the opening of the housing is fitted in each of the slits, and the plurality of heat The exchange segment may be supported.
- the exhaust heat recovery apparatus of the present invention comprises a main exhaust passage for introducing exhaust gas of an internal combustion engine, a gas introduction port branched from a part of the main exhaust passage, and the main exhaust passage.
- the heat exchanger is a plurality of heat exchange segments arranged in parallel in the housing, and is liquid-tightly joined to the housing to form a cooling medium flow path in each gap between the heat exchange segments adjacent to each other.
- each of the heat exchange segments constituting the plurality of heat exchange segments has an opening on only one surface, and at least outside the openings. Is liquid-tight by the sealing member A housing to be stopped, and a plurality of passages that are accommodated in the housing and allow only an exhaust gas flow in a predetermined direction, and a gas introduction passage and a gas are provided upstream and downstream of the plurality of passages.
- a guide member having a discharge flow path each of the housings having a gas introduction port communicating with the gas introduction flow channel at an opening of the housing, the gas introduction port serving as a gas introduction port of the bypass flow channel.
- the opening of each casing has a gas discharge port communicating with the gas discharge channel, and the gas discharge port constitutes the gas discharge port of the bypass channel.
- the guide member of each of the plurality of heat exchanging segments includes a fin formed in a wavy shape having a continuous S-shaped cross section, in which one heat exchanging plate is bent.
- One side surface of the fin extending direction shields the opening of the housing between the gas inlet and the gas outlet, and both end surfaces of the fin communicate with the gas inlet and the gas outlet, respectively. It is good to set it as the structure arranged.
- the heat exchanger provided for the exhaust heat recovery apparatus includes a cooling medium introduction port and a cooling medium discharge port formed in the housing and communicating with the cooling medium flow path, and the cooling medium introduction port and the cooling medium discharge port.
- the current plate has a comb shape, and a part of the comb teeth constituting the comb shape is formed by connecting the plurality of heat exchange segments to each other. It is good to set it as the structure interposed by each adjacent gap
- the rectifying plate has a bent portion in which a tip of a part of comb teeth constituting the comb shape is bent, and a cooling medium guide path for each gap is formed by the bent portion. It may be a thing.
- the housing of each of the plurality of heat exchange segments has at least one convex portion at the same position on each side surface adjacent to each other, It is good to set it as the structure by which this convex part is arrange
- the housing of the heat exchanger constitutes an upper housing in which the opening is positioned below and is disposed above the main exhaust passage, and is joined to the upper housing and formed into a housing shape.
- a lower housing may be provided, and the main exhaust flow path may be configured in the lower housing.
- valve device that opens and closes communication between the main exhaust passage and the bypass passage, the valve device including at least a valve member housed in the lower housing, and the main exhaust passage from the main exhaust passage.
- a branching portion that branches into a bypass flow path and a merging section that joins from the bypass flow path to the main exhaust flow path via the valve member may be provided.
- the valve device supports a first valve member that opens and closes the main exhaust passage, a second valve member that opens and closes the bypass passage, and the first valve member and the second valve member.
- a single shaft member and a holding member that surrounds the shaft member and is supported on at least one side surface of the lower housing may be provided.
- the second valve member is disposed so as to open and close the bypass flow path at the junction, and when the first valve member opens the main exhaust flow path, the second valve member
- the bypass channel may be closed and the holding member may be shielded from the main exhaust channel.
- the said valve apparatus was equipped with the actuator which rotationally drives the said shaft member, and the said actuator is supported by the said bracket. At the same time, the holding member may be fitted.
- the present invention is a heat exchanger for exchanging heat between an exhaust gas and a cooling medium in a housing, and a plurality of heat exchange segments arranged in parallel in the housing, and a liquid-tight manner in the housing.
- a sealing member that supports the plurality of heat exchange segments so as to form a cooling medium flow path is formed in each gap between the heat exchange segments adjacent to each other to form the plurality of heat exchange segments.
- Each heat exchange segment has an opening on only one surface, and at least the outside of the opening is liquid-tightly sealed by the sealing member, and is housed in the casing and exhausted in a predetermined direction.
- each guide member of the plurality of heat exchange segments is provided with fins formed in a corrugated shape having a continuous S-shaped cross section, with one heat exchange plate bent.
- the one side surface of the fin extending direction shields the opening of the housing between the gas inlet and the gas outlet, and the both end surfaces of the fin are arranged to communicate with the gas inlet and the gas outlet, respectively. Then, a guide member with good heat exchange efficiency can be easily incorporated into each heat exchange segment.
- a cooling medium inlet and a cooling medium outlet formed in the housing and communicated with the cooling medium flow path, and a rectifying plate interposed between the cooling medium inlet and the cooling medium outlet If the cooling medium is provided, the cooling medium can be circulated smoothly to efficiently exchange heat. If the rectifying plate has a comb shape, and a part of the comb teeth constituting the comb shape is configured such that a plurality of heat exchange segments are interposed in the gaps adjacent to each other, The cooling medium can be circulated appropriately and smoothly in the exchange segment.
- each heat Heat exchange can be performed evenly in the exchange segment, and heat exchange can be performed efficiently.
- each housing of the plurality of heat exchange segments has at least one convex portion at the same position on each side surface adjacent to each other, and the convex portion is disposed in the cooling medium flow path.
- the sealing member has a plurality of slits formed in parallel, and the outside of the opening of the housing is fitted in each of the slits to support the plurality of heat exchange segments. The housing of each heat exchange segment can be liquid-tightly sealed easily and appropriately.
- the main exhaust passage for introducing the exhaust gas of the internal combustion engine, the gas introduction port branched from a part of the main exhaust passage, and the main exhaust passage And a heat exchanger that recovers exhaust heat by exchanging heat between the exhaust gas passing through the bypass flow path and the cooling medium in the housing. Since the gas inlet and the gas outlet formed in the opening of each casing constitute the gas inlet and the gas outlet of the bypass channel, respectively. Efficient heat recovery can be performed while minimizing the heat capacity of the bypass channel and the space necessary for this, and not only the heat exchanger but also the exhaust heat recovery device as a whole can be downsized.
- each guide member of the plurality of heat exchange segments includes a fin formed in a wave shape having a continuous S-shaped cross section, with one heat exchange plate material bent.
- One side surface of the extending direction shields the opening of the housing between the gas inlet and the gas outlet, and the both end surfaces of the fin are arranged to communicate with the gas inlet and the gas outlet, respectively.
- a guide member having good heat exchange efficiency can be easily incorporated in each heat exchange segment.
- the heat exchanger provided for the exhaust heat recovery apparatus is provided between the cooling medium inlet and the cooling medium outlet formed in the housing and communicating with the cooling medium flow path, and between the cooling medium inlet and the cooling medium outlet.
- the rectifying plate has a comb shape, and a part of the comb teeth constituting the comb shape is formed in each gap where a plurality of heat exchange segments are adjacent to each other. If it is set as the structure interposed, a cooling medium can be circulated appropriately and smoothly in each said heat exchange segment, and heat recovery can be performed efficiently.
- each heat Heat can be evenly exchanged within the exchange segment, and heat can be recovered efficiently.
- each housing of the plurality of heat exchange segments has at least one convex portion at the same position on each side surface adjacent to each other, and the convex portion is disposed in the cooling medium flow path.
- the housing of the heat exchanger constitutes an upper housing having an opening located below and disposed above the main exhaust flow path, and is joined to the upper housing to form a housing. If the main exhaust passage is configured in the lower housing, the heat exchanger can be easily and appropriately attached to the main exhaust passage.
- a valve device that opens and closes communication between the main exhaust flow path and the bypass flow path, the valve device having at least a valve member housed in the lower housing, and a branch from the main exhaust flow path to the bypass flow path And a diverting channel and a merging unit that merges from the detour channel through the valve member to the main exhaust channel, the main exhaust channel and detour channel of the exhaust gas flow can be obtained with a small valve device. Switching to can be performed easily and appropriately.
- the valve device includes a first valve member that opens and closes the main exhaust passage, a second valve member that opens and closes the bypass passage, and a single valve member that supports the first valve member and the second valve member. If the shaft member and the holding member that is held so as to surround the shaft member and are supported on at least one side surface of the lower housing are provided, the shaft member can be appropriately protected by the holding member.
- the second valve member is disposed so as to open and close the bypass flow path at the junction, and when the first valve member opens the main exhaust flow path, the second valve member closes the bypass flow path.
- the shaft member can be appropriately protected from high-temperature exhaust gas in the main exhaust passage.
- the valve device includes a bracket fixed to at least one of the upper housing and the lower housing, and the valve device includes an actuator that rotationally drives the shaft member.
- the bracket supports the actuator and the holding member is fitted.
- FIG. 1 It is a perspective view which shows the assembly
- the exhaust heat recovery apparatus mainly introduces exhaust gas from an internal combustion engine (not shown).
- the heat exchanger 1 is collected.
- the housing 20 of the exhaust heat recovery apparatus is housed by an upper housing 21 that is disposed above the main exhaust passage 2 (when mounted on the vehicle) and a lower housing 22 that is joined thereto. It is formed in a body shape and is liquid-tightly separated by the sealing member 23.
- the lower housing 22 is formed by joining the two members 22a and 22b.
- a valve device 4 for opening and closing the communication between the main exhaust passage 2 and the bypass passage 3 is provided.
- the heat exchanger 1 of the present embodiment has a housing constituted by an upper housing 21 of an exhaust heat recovery device. As shown in FIGS. 1 to 7, a plurality of heat exchange segments (5 in this embodiment) ( Each heat exchange segment 10 is constituted by a casing 11 having only one surface opened and a guide member 12 accommodated in the casing 11.
- the casing 11 of the present embodiment is formed in a rectangular parallelepiped shape in which the lower flat portion in the longitudinal direction is opened, but may be formed in a rectangular parallelepiped shape in which both side surfaces are square and the lower flat portion is open, Alternatively, it may be formed in a shape having an arcuate curved surface in the upper part of FIG. 1 and the like, with both side surfaces being semicircular and the lower flat part being open.
- Each guide member 12 has a plurality of flow paths GP that allow only an exhaust gas flow in a predetermined direction (longitudinal direction of the casing 11 in the present embodiment), and gas introduction flow paths GI and upstream and downstream thereof.
- each of the casings 11 has a gas introduction port 11a communicating with the gas introduction channel GI and a gas exhaust port communicating with the gas discharge channel G0. 11b.
- the five heat exchange segments 10 are arranged in parallel with a predetermined gap therebetween, and are surrounded by an upper housing 21 having an opening 21 a on the same side as the opening surface 10 a of each heat exchange segment 10.
- the five heat exchange segments 10 are accommodated in the upper housing 21, and the gas introduction port 11 a and the gas discharge port 11 b provided before and after each heat exchange segment 10 in a predetermined direction (longitudinal direction of the casing 11).
- the gas inlet 3a and the gas outlet 3b of the bypass channel 3 are configured, respectively.
- the heat exchanger 1 includes a sealing member 23 that partitions the upper housing 21 in a liquid-tight manner and seals at least the outside of the opening of the housing 11 in a liquid-tight manner.
- a sealing member 23 that partitions the upper housing 21 in a liquid-tight manner and seals at least the outside of the opening of the housing 11 in a liquid-tight manner.
- slits typically indicated by 23a
- the heat exchange segments 10 are fitted into the respective slits 23a, respectively. 2 (and FIG. 11 and FIG. 12 described later).
- the cooling medium introduction port 21b to the cooling medium flow path FP is provided with the cooling medium from the cooling medium flow path FP. It is provided below the discharge port 21c (when mounted on the vehicle), and a rectifying plate 24 is interposed between the cooling medium introduction port 21b and the cooling medium discharge port 21c.
- the rectifying plate 24 has a comb shape as shown in FIGS. 5 and 6.
- the comb teeth 24 b to 24 e have five heat exchange segments 10 connected to each other. It is interposed in each adjacent gap. Further, the tips of the comb teeth 24b to 24e are bent to form bent portions 24g to 24j, and the bent portions 24h and 24i located at the center in the width direction are set to be the longest.
- a cooling medium guide path for each gap between the heat exchange segments 10 is formed by the bent portions 24h and 24i.
- the comb teeth 24a to 24f are adjusted so that the flow rate of the cooling medium is fast at the intermediate portion in the width direction of each heat exchange segment 10 and slow at the end portion. Heat exchange can be performed.
- the housing 11 of each heat exchange segment 10 is formed by joining the opening side walls of the two lid members 11x and 11y (one surface in the longitudinal direction is open). It is formed in a rectangular parallelepiped shape. As shown in FIG. 5 and FIG. 6 (and FIG. 9 and FIG. 10 described later), at least one convex portion 11p is formed at the same position on the side surfaces on the sides adjacent to each other, and the convex The part 11p is disposed in the cooling medium flow path FP. In the present embodiment, in addition to the long convex portion 11p extending in the longitudinal direction, a plurality of protruding convex portions 11q are formed. As shown in FIG.
- a gap (s) is formed between the convex portions 11p, 11p adjacent to each other.
- the bubbles mixed in the cooling medium are separated and move upward in FIG.
- the protrusions 11q and 11q adjacent to each other are in contact with each other, but these define a gap between the adjacent casings 11 and 11, which are indicated by solid arrows in FIG. 1 and solid lines and two in FIG.
- the cooling medium is guided as indicated by the dotted line arrow, and the desired cooling medium flow path FP is secured together with the rectifying plate 24.
- seat material for heat exchange is bent, and it is continuous S-shape. It is comprised with the fin 13 formed in the wave shape which has a cross section.
- one side surface 13a in the extending direction of the fin 13 shields the opening in the longitudinal direction of the casing 11, and both end surfaces 13b and 13c of the fin 13 are respectively gas introduction ports 11a.
- the gas introduction port 3a of the bypass channel 3 and the gas discharge port 11b (as a result, the gas discharge port 3b of the bypass channel 3) are arranged to communicate with each other.
- the exhaust gas flow paths (GI, GP, GO) shown in FIG. 1 are formed, and the flow of the exhaust gas is as indicated by broken line arrows.
- the opening in the longitudinal direction of the casing 11 may be joined with another member (not shown) instead of the one side surface 13a in the extending direction of the fins 13, or integrated with the casing 11. It is good also as forming a closed part (not shown) in this.
- valve device 4 is mounted on the lower housing 22, and the main exhaust passage 2 is formed in the lower housing 22. Accordingly, there are a branch portion 2a that branches from the main exhaust passage 2 to the bypass passage 3, and a merging portion 2b that joins from the bypass passage 3 to the main exhaust passage 2 (via a second valve member 42 described later). , Formed in the lower housing 22. As shown in FIG. 1, a partition member 25 having a valve seat 25a is joined to the member 22a, and a partition member 26 having a communication hole 26a is fitted to the member 22b. The junction 2b is separated. The partition members 25 and 26 are joined and arranged as an integral member as shown by a two-dot chain line in FIG.
- the partition wall member 26 is formed in a bowl-shaped housing, and a communication hole 26a communicating with the main exhaust flow path 2 at the junction 2b and a holding member 44 described later are fitted therein. Communicating holes 26b and 26b are formed. As shown in FIG. 8, the partition wall member 26 is formed with an inclined surface portion 26 c, arranged to face the opening surface 10 a of each heat exchange segment 10, and after heat exchange discharged from each heat exchange segment 10. Gas is guided in the direction of the communication hole 26a. Further, a flat portion 26d formed in parallel to the axis connecting the centers of the communication holes 26b, 26b is formed, and the flat portion 26d functions as a buffer member as shown in FIGS. 1 and 3.
- the partition wall member 26 is disposed such that the opening 26 e is opened downstream of the valve device 4 in the main exhaust passage 2.
- both end surfaces 13b and 13c of the fin 13 communicate with the gas inlet 11a (3a) and the gas outlet 11b (3b), respectively, and the exhaust gas flow paths (GI, GP) shown in FIG. , GO).
- the recessed part 26f is formed in the up-down direction of the side surface of the partition member 26, this is provided to the groove
- the heat exchanger 1 having the above-described configuration will be further described with reference to FIG. 9 to FIG.
- a lid member 11y having substantially the same shape as the lid member 11x having a cross section shown in FIG. 9 is joined so that both opening side walls overlap as shown in a partial cross section on the left side of FIG.
- a housing 11 is formed.
- the casing 11 is provided with the above-described long projections 11p and projection-like projections 11q having different heights, and the difference in height between them is set to (s / 2). Then, as shown in FIG. 5, when the lid members 11x and 11y are joined in a state where the fins 13 are housed in the housing 11, the heat exchange segment 10 shown in FIG. 6 is configured.
- slits 23a are formed in parallel at five locations on the sealing member 23.
- an air gap (s) is formed between the protrusions 11p and 11p of the casing 11 adjacent to each other.
- comb teeth 24b to 24e of the rectifying plate 24 shown in FIGS. 5 and 6 are interposed in the adjacent gaps of the five heat exchange segments 10, and as shown in FIGS.
- the teeth 24 a and 24 f are disposed so as to be located outside the heat exchange segments 10 on both sides, and are accommodated in the upper housing 21.
- the upper housing 21 constituting the housing of the heat exchanger 1 has a casing shape shown in FIGS. 13 and 14 and is formed with a cooling medium introduction port 21b and a cooling medium discharge port 21c, and is intended for efficient heat exchange.
- the cooling medium introduction port 21b is provided below the cooling medium discharge port 21c (when mounted on the vehicle).
- a rectifying plate 24 is positioned between the two, and is arranged in the upper housing 21 as shown in FIGS.
- the valve device 4 used in the exhaust heat recovery apparatus of the present embodiment includes a first valve member 41 that opens and closes the main exhaust passage 2, a second valve member 42 that opens and closes the bypass passage 3, A single shaft member 43 that supports the first and second valve members 41, 42, and at least one side surface of the lower housing 22 that is held so as to surround the shaft member 43 (in this embodiment, the left side in FIG. 3)
- the holding member 44 supported on the side surface of the shaft member 43 is provided, and the shaft member 43 is rotationally driven by the actuator 50.
- the holding member 44 is apparently a cantilever support structure supported only on one side surface (the left side in FIG. 3) of the lower housing 22, but is substantially supported because both ends are supported by the partition wall member 26. Has a double-sided support structure.
- the 2nd valve member 42 of this embodiment is comprised by the curved board joined to the support part of the disk-shaped 1st valve member 41, and the holding member (both ends were supported by the partition member 26)
- the first valve member 41 and the first valve member 41 are pivoted about a shaft member 43 that is pivotally supported by the shaft 44.
- the second valve member 42 is disposed so as to open and close the bypass channel 3 at the junction 2b.
- the first valve member 41 opens the main exhaust channel 2
- the second valve member 42 is provided. Is closed (but not necessarily fully closed) and the holding member 44 is arranged to shield the exhaust gas in the main exhaust passage 2. Thereby, it is possible to prevent the holding member 44 and thus the shaft member 43 from being exposed to the high-temperature exhaust gas in the main exhaust passage 2.
- the partition members 25 and 26 are joined and disposed as an integral member, the first and second members for the valve seat 25a and the communication hole 26a are not only in operation but also in the assembly process. The positional relationship between the valve members 41 and 42 can be reliably maintained.
- a bracket 28 is fixed to the lower housing 22, and an actuator 50 is supported and a holding member 44 of the valve device 4 is fitted to the bracket 28.
- the holding member 44 is fitted in the communication hole 26 b of the partition wall member 26 shown in FIGS. 3 and 8, and the shaft member 43 accommodated in the holding member 44 and supported rotatably is provided outside the lower housing 22. It is extended and biased in a predetermined position (closed position of the first valve member 41) by a return spring 45 whose one end is locked to the bracket 28. Further, a lever 46 is attached to the tip of the shaft member 43, and the rod 50a of the actuator 50 is disposed so as to be able to contact the end 46a.
- the cooling medium of the internal combustion engine (not shown) is introduced into the upper housing 21 from the cooling medium introduction port 21b via the introduction side pipe FTb, and from the cooling medium discharge port 21c.
- the high-temperature cooling medium after the heat exchange discharged is piped back to the internal combustion engine (not shown) via the discharge side pipe FTc and the temperature detection unit FTx. 17 corresponds to FIG. 1, the BB line sectional view corresponds to FIG. 2, and the CC line sectional view corresponds to FIG.
- the cooling medium introduction port 21b has different shapes (vertical dimensions) in FIGS. 1 and 2 (and FIG. 13).
- a temperature-sensitive member (thermoelement) 50 b containing a temperature-sensitive wax similar to the conventional one is used as the actuator 50, and after the heat exchange in the temperature detection unit FTx
- the temperature sensitive member 50b is configured to drive the rod 50a forward against the urging force of the return spring 50c according to the cooling medium temperature, but a negative pressure drive type actuator or an electric motor is used. It is good.
- an electric heating type actuator 60 is further mounted to forcibly drive the first valve member 41 during freezing, and the end opposite to the end 46a of the lever 46 is attached.
- the rod 60a is disposed so as to be able to contact the portion 46b, this may be omitted.
- the embodiment shown in FIGS. 1 to 3 gives priority to exhaust heat recovery in the warming-up process (when cold) of the internal combustion engine (not shown), and the cooling medium is quickly used.
- the main exhaust passage 2 is fully closed by the first valve member 41, and the bypass passage 3 is fully open.
- the exhaust gas flows from the exhaust pipe (not shown) to the heat exchanger 1 through the gas inlet 11a (the gas inlet 3a of the bypass channel 3). And is actively recovered (cooled) and discharged from the gas discharge port 11b (the gas discharge port 3b of the detour channel 3) into the main exhaust channel 2.
- the main exhaust passage 2 is fully closed by the first valve member 41, but it is not essential to completely shut off the exhaust gas. If the exhaust flow rate of 2 is reduced by a necessary amount, it is not necessarily required to be in the fully closed state, and may be in a slightly opened state.
- the main exhaust flow path 2 is fully opened as shown by a two-dot chain line in FIG.
- the second valve member 42 is substantially fully closed, and most of the exhaust gas is discharged from the main exhaust passage 2 to an exhaust pipe (not shown).
- FIGS. 18 and 19 show heat exchangers 1x and 1y according to another embodiment of the present invention, and fins 13 shown in FIGS. 1 and 2 are used as guide members 12 of each heat exchange segment 10.
- FIG. instead of, fins 13x and 13y are used. That is, in FIG. 18, the gas introduction flow path GI and the gas discharge flow path GO formed between the both end faces 13bx and 13cx of the fin 13x and the inner surface of the housing 11 are respectively connected to the gas introduction port 11a (bypass flow). It is formed so that the flow path area gradually decreases from the gas introduction port 3a) of the path 3 and the gas discharge port 11b (the gas discharge port 3b of the detour flow path 3) toward the side (upward in FIG. 18). .
- fins 13y composed of three members, fins 13ya, 13yb, and 13yc, are used and are disposed in exhaust gas flow paths (GI, GP, GO), respectively.
- 18 and FIG. 19 are the same as those shown in FIG. 1, the same components as those in FIG. 1 are denoted by the same reference numerals as those in FIG.
- a plurality of heat exchange segments 10 are accommodated in the upper housing 21, and exhaust gas flow paths (GI, GP, GO) are formed in the respective heat exchange segments 10. Since the bypass flow path 3 is constituted by these, efficient heat recovery is achieved by the heat exchangers 1, 1 x, 1 y while minimizing the heat capacity of the bypass flow path 3 and the space required for the bypass flow path 3. Since this can be performed, the entire exhaust heat recovery apparatus can be reduced in size.
- the exhaust heat recovery apparatus of the present invention basically has the heat exchanger 1, the main exhaust flow path 2, and the bypass flow path 3, and is not limited to the use or name of the apparatus. That is, the exhaust heat recovery device is not limited to the narrow sense exhaust gas interposed in the exhaust pipe of the internal combustion engine. For example, as in the so-called EGR cooler mounted in the internal combustion engine, the exhaust heat cooling is achieved as a result.
- the present invention can also be applied to a device that collects the desired effects.
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Abstract
Description
2 主排気流路
2a 分岐部
2b 合流部
3 迂回流路
3a、11a ガス導入口
3b、11b ガス排出口
4 弁装置
10 熱交換セグメント
11 筐体
12 案内部材
13、13x、13y フィン
21 アッパハウジング
22 ロアハウジング
23 封止部材
24 整流板
25、26 隔壁部材
27 ワイヤメッシュ
28 ブラケット
41 第1の弁部材
42 第2の弁部材
43 軸部材
44 保持部材
45 リターンスプリング
46 レバー
50、60 アクチュエータ
Claims (17)
- ハウジング内で排気ガスと冷却媒体との熱交換を行う熱交換器であって、
前記ハウジング内に並設される複数個の熱交換セグメントと、
前記ハウジングに液密的に接合され、相互に隣接する前記熱交換セグメントの各間隙に冷却媒体流路を形成するように前記複数個の熱交換セグメントを支持する封止部材を備え、
前記複数個の熱交換セグメントを構成する各熱交換セグメントが、
一つの面のみに開口を有し、少なくとも該開口の外側が前記封止部材によって液密的に封止される筐体と、
該筐体内に収容され、所定方向の排気ガス流のみを許容する複数の流路を有すると共に、該複数の流路の上流側及び下流側にガス導入流路及びガス排出流路を有する案内部材とを具備し、
各々の前記筐体の開口に、前記ガス導入流路に連通するガス導入口を有すると共に、前記ガス排出流路に連通するガス排出口を有する
熱交換器。 - 前記複数個の熱交換セグメントの各々の前記案内部材は、
一枚の熱交換用板材が屈曲され、連続するS字状断面を有する波状に形成されたフィンを備え、
該フィンの延出方向の一側面が前記ガス導入口と前記ガス排出口の間の前記筐体の開口を遮蔽し、当該フィンの両端面側が夫々前記ガス導入口と前記ガス排出口に連通するように配置される
請求項1記載の熱交換器。 - 前記ハウジングに形成され前記冷却媒体流路に連通する冷却媒体導入口及び冷却媒体排出口と、
該冷却媒体導入口及び冷却媒体排出口の間に介装される整流板を備えた
請求項1記載の熱交換器。 - 前記整流板は櫛型形状を有し、
該櫛型を構成する櫛歯の一部が、前記複数個の熱交換セグメントが相互に隣接する各間隙に介装される
請求項3記載の熱交換器。 - 前記整流板は、前記櫛型を構成する櫛歯の一部の先端が折曲された折曲部を有し、
該折曲部によって前記各間隙に対する冷却媒体案内路が形成されている
請求項4記載の熱交換器。 - 前記複数個の熱交換セグメントの各々の前記筐体は、相互に隣接する各側面の同位置に少なくとも一つの凸部を有し、該凸部が前記冷却媒体流路内に配置されている
請求項1記載の熱交換器。 - 前記封止部材は、平行に形成された複数のスリットを有し、該スリット内に夫々前記筐体の開口の外側が嵌合されて、前記複数個の熱交換セグメントが支持される
請求項1記載の熱交換器。 - 内燃機関の排気ガスを導入する主排気流路と、
該主排気流路の一部から分岐してガス導入口を構成すると共に当該主排気流路の他の部分に合流してガス排出口を構成する迂回流路と、
該迂回流路を通過する排気ガスをハウジング内で冷却媒体と熱交換して排気熱を回収する熱交換器とを備え、
該熱交換器が、
前記ハウジング内に並設される複数個の熱交換セグメントと、
前記ハウジングに液密的に接合され、相互に隣接する前記熱交換セグメントの各間隙に冷却媒体流路を形成するように前記複数個の熱交換セグメントを支持する封止部材を備え、
前記複数個の熱交換セグメントを構成する各熱交換セグメントが、
一つの面のみに開口を有し、少なくとも該開口の外側が前記封止部材によって液密的に封止される筐体と、
該筐体内に収容され、所定方向の排気ガス流のみを許容する複数の流路を有すると共に、該複数の流路の上流側及び下流側にガス導入流路及びガス排出流路を有する案内部材とを具備し、
各々の前記筐体の開口に、前記ガス導入流路に連通するガス導入口を有し、該ガス導入口が前記迂回流路のガス導入口を構成すると共に、各々の前記筐体の開口に、前記ガス排出流路に連通するガス排出口を有し、該ガス排出口が前記迂回流路のガス排出口を構成する
排気熱回収装置。 - 前記複数個の熱交換セグメントの各々の前記案内部材は、
一枚の熱交換用板材が屈曲され、連続するS字状断面を有する波状に形成されたフィンを備え、
該フィンの延出方向の一側面が前記ガス導入口と前記ガス排出口の間の前記筐体の開口を遮蔽し、当該フィンの両端面側が夫々前記ガス導入口と前記ガス排出口に連通するように配置される
請求項8記載の排気熱回収装置。 - 前記熱交換器は、
前記ハウジングに形成され前記冷却媒体流路に連通する冷却媒体導入口及び冷却媒体排出口と、
該冷却媒体導入口及び冷却媒体排出口の間に介装される整流板を備え、
該整流板は櫛型形状を有し、
該櫛型を構成する櫛歯の一部が、前記複数個の熱交換セグメントが相互に隣接する各間隙に介装される
請求項8記載の排気熱回収装置。 - 前記整流板は、前記櫛型を構成する櫛歯の一部の先端が折曲された折曲部を有し、
該折曲部によって前記各間隙に対する冷却媒体案内路が形成されている
請求項10記載の排気熱回収装置。 - 前記複数個の熱交換セグメントの各々の前記筐体は、相互に隣接する各側面の同位置に少なくとも一つの凸部を有し、該凸部が前記冷却媒体流路内に配置されている
請求項8記載の排気熱回収装置。 - 前記熱交換器のハウジングは、
前記開口が下方に位置すると共に前記主排気流路に対し上方に配置されるアッパハウジングを構成し、
該アッパハウジングに接合されて筐体形状に形成されるロアハウジングを備え、
該ロアハウジング内に前記主排気流路が構成されている
請求項8記載の排気熱回収装置。 - 前記主排気流路と前記迂回流路との間の連通を開閉する弁装置であって、前記ロアハウジング内に収容される少なくとも弁部材を有する弁装置と、
前記主排気流路から前記迂回流路に分岐する分岐部と、
前記迂回流路から前記弁部材を介して前記主排気流路に合流する合流部とを備えた
請求項13記載の排気熱回収装置。 - 前記弁装置は、
前記主排気流路を開閉する第1の弁部材と、
前記迂回流路を開閉する第2の弁部材と、
前記第1の弁部材及び前記第2の弁部材を支持する単一の軸部材と、
該軸部材を囲繞するように保持し前記ロアハウジングの少なくとも一方の側面に支持される保持部材とを備えた
請求項14記載の排気熱回収装置。 - 前記第2の弁部材は前記合流部で前記迂回流路を開閉するように配設され、
前記第1の弁部材が前記主排気流路を開とするときには、前記第2の弁部材が前記迂回流路を閉とすると共に、前記保持部材を前記主排気流路に対し遮蔽する
請求項15記載の排気熱回収装置。 - 前記アッパハウジング及び前記ロアハウジングの少なくとも一方に固定されたブラケットを備え、
前記弁装置は、前記軸部材を回転駆動するアクチュエータを具備し、
前記ブラケットに、前記アクチュエータが支持されると共に前記保持部材が嵌合される
請求項15記載の排気熱回収装置。
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DE112016001000T5 (de) | 2017-11-23 |
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