CN109210977A - Heat exchanger and the exhaust gas heat recovery device for having the heat exchanger - Google Patents

Abstract

In the of the invention heat exchanger for carrying out the heat exchange between exhaust gas and cooling medium, provide make it possible to miniaturise with few constituent parts, exhaust gas heat recovery device that is small-sized and being able to carry out effective recuperation of heat.Heat exchanger (1) has: being disposed in parallel in the intracorporal multiple heat exchange segments (10) of shell, with shell it is fluid tight combine, support the seal member (23) of heat exchange segment with forming cooling medium flow path (FP) in each gap of heat exchange segment adjacent to each other, and have and the cooling medium imported from cooling medium introducing port (21b) be directed to the rectification part (24xd) of cooling medium flow path, the holder (24) of each heat exchange segment of holding.Each heat exchange segment has: the framework (11) that only there is opening, its outside to be sealed fluid tightly using seal member on one face, and is housed in the guiding part (12) of interior, with the waste gas stream for only allowing predetermined direction a plurality of flow path (GP) of framework.

Description

Heat exchanger and the exhaust gas heat recovery device for having the heat exchanger

Technical field

The present invention relates to heat exchanger and have the exhaust gas heat recovery device of the heat exchanger, more particularly to is suitable for internal combustion The heat exchanger and exhaust gas heat recovery device of machine.

Background technique

In order to cope with the requirement for improving energy efficiency, every profession and trade, which takes, will drain to the heat of the gas in atmosphere and arranges Gas recuperation of heat, the countermeasure recycled.Especially in the automotive field equipped with internal combustion engine, in order to improve integrated heat efficiency, just Promote clamp in exhaust pipe by the exhaust gas heat recovery device of the recuperation of heat of the exhaust gas of internal combustion engine, will be by being carried out with exhaust heat Heat exchange and the supply of heated cooling medium promotes warming-up and improves the technology of heating installation performance.For example, following special In sharp document 1, disclose following exhaust gas heat recovery device (being recorded in the paragraph (0008) of patent document 1): have with The valve body that exhaust gas carries out the heat exchanger of heat exchange, makes exhaust gas bypass channel of detour and opening and closing bypass channel in heat exchanger Exhaust gas heat recovery device in, have with just from heat exchanger be discharged media contact temperature start actuator, if medium Temperature reaches predetermined value or more, then temperature starts actuator stretching routine, and driving valve body is open.

As above-mentioned exhaust gas heat recovery device, disclosed in patent document 1 such as flowering structure: inlet cone goes out gas coning, bypass The structure that pipe, heat exchanger are hermetic fitted and fixed with mutually by melting welding etc..Disclose " the upstream of bypass pipe and heat exchanger Side end is fitted in inlet cone, the end of downstream side of bypass pipe and heat exchanger is fitted to out in gas coning " structure (be documented in In the paragraph (0013) of patent document 1, but the label being attached with is omitted), moreover, describing heat exchanger " in shell The heat-transfer pipe of interior 9 flat cross sections is by its both ends fluid tightly through being fixed on partition ", " shell is utilized between 2 pieces of partitions The purport content of the water jacket of inner surface and heat transfer tube outer surface formation media flow " (is documented in the paragraph (0014) of above-mentioned document In, but the label being attached with is omitted).

Also, in following patent documents 2, describe following heat exchanger: " biography of the laminated multi-layer exhaust gas in internal flow Heat pipe, stacking these heat-transfer pipes be housed in core shell, in the core shell setting import medium introducing port and will be by heat-transfer pipe The outlet of medium discharge after heating, medium are flowed from introducing port to outlet, while exhaust gas is in the internal flow of heat-transfer pipe, In the medium that the periphery of heat-transfer pipe is flowed by the heat of exhaust gas, heat-transfer pipe is laminated at least 3 layers, passes through 3 layers of stacking or more Heat-transfer pipe is between the upper surface and core shell of heat-transfer pipe, between heat-transfer pipe and heat-transfer pipe, between the lower surface and core shell of heat-transfer pipe The flow path of formation forms 4 layers or more on cross-sectional view, and medium is formed between the side and core shell of heat-transfer pipe to other laminar flows Inter-layer passages "；And the structure for proposing " blocking arbitrary inter-layer passages using flow path closing organ " (is documented in patent text It offers in 2 paragraph (0009)).

Moreover, being described in patent document 2 such as flowering structure, " exhaust gas heat recovery device includes following part: importing internal combustion engine The introduction part of the exhaust gas of generation is connected on the introduction part via upper passage, top is supported on gas and flows on component Heat exchanger, be connected on the rear end of the heat exchanger, component flowed out by the gas that exhaust gas after heat exchanger flows, The lower passages that the lower section that heat exchanger is arranged in, the exhaust gas not flowed in upper passage flow, with the cause of medium discharge unit Dynamic device supporting part bearing, the temperature actuator that acts of temperature by medium, and be arranged on the top of the temperature actuator, adjust The valve mechanism for saving the amount of the exhaust gas flowed in upper passage (is documented in the paragraph (0032) of patent document 2, but is attached with Invoking marks omit).

Also, following heat exchangers are disclosed in patent document 3: it includes the core shell for being formed as tubular, is layered in the core Heat-exchange tube that the inside of shell and the 1st heat transfer medium flow inside it, on the basis of the flow direction of the 1st heat transfer medium Through the upstream side end for supporting the upstream side end of the heat-exchange tube and closing the core shell upstream side end panel and Through the downstream side end panel for the end of downstream side for supporting the end of downstream side of the heat-exchange tube and closing the core shell, in institute It states the 1st heat transfer medium and carries out heat exchange between the 2nd heat transfer medium that the periphery of the heat-exchange tube is flowed；Its feature exists In the upstream side end panel includes the upstream side connecting component connecting with the core shell and is incorporated in the upstream side connecting component It is inserted into the upstream side bottom plate of the heat-exchange tube simultaneously, the plate of the plate thickness of the upstream side bottom plate than the upstream side connecting component Thickness wants thin (being documented in the paragraph (0009) of patent document 3).Also, also disclose the heat-exchange device including following part: The branch portion that 2 articles of flow paths are branched off into as the exhaust gas of the 1st heat transfer medium, by the 1st heat transfer medium of importing is imported, from The 1st flow path that the branch portion extends, the 2nd flow path extended from the branch portion along the 1st flow path are mounted on the 2nd stream Lu Zhong, the heat exchanger to recover energy from the heat of the 1st heat transfer medium, and the 1st flow path can be opened and closed Or the valve (being documented in the paragraph (0016) of above-mentioned document) that is arranged of the 2nd flow path ground.

Moreover, Patent Document 4 discloses following multi tube heat exchangers: having multilayer laminated flat heat transfer Pipe, the shell that is formed around the periphery of the flat heat transfer tubes and it is arranged on the both ends of the shell and through configuration The tube socket at the both ends of the flat heat transfer tubes, in the exhaust gas and the enclosure interior stream of the flat heat transfer tubes internal flow In the multi tube heat exchanger for carrying out the mode of heat exchange between dynamic cooling medium, has setting and be connected to cooling water pipeline The cooling water of end flows into pipe and by radicle to cover by setting along the length direction generally perpendicular direction with the shell The mode for the cooling water inflow opening portion that the long hole set is constituted is connected on the end of waste gas stream inlet side of the shell Cooled water distributor, and space or the space between each flat heat transfer tubes of the stacking and flat heat transfer tubes with At least one place of the tube socket medial surface of waste gas stream inlet side is directed toward in spatial portion between shell inner surface with top Guide member, and the guide member is at least fixed on the flat heat transfer tubes in a place and (is documented in patent text It offers in 4 paragraph (0019)).

Also, the exhaust-heat exchanger for having following structures is proposed in patent document 5: even if due to configuration space Deng carrying limitation and make in the central axis direction and exhaust-heat exchanger for the waste gas ingress pipe being arranged in exhaust-heat exchanger Exhaust steam passage extend the inclined situation in direction under, also can be improved refrigerant bring exhaust gas heat exchanger effectiveness (record In the paragraph (0011) of patent document 5).

On the other hand, Patent Document 6 discloses configurations in waste gas stream, the heat friendship of thermal energy can be recycled from waste gas stream Parallel operation, and describe " heat exchanger by one in heat exchange flow path and the bypass flow path for bypassing the flow path or Both sides connect with the valve member of adjustment control waste gas stream, and valve member is by external actuator control come according to exhaust gas, heat exchanger Working limit and/or thermal energy recycling require such service condition to determine position.Heat exchange flow path and bypass flow path are prolonged always Reach with the common recover of outlet being connect with the other component of exhaust system " etc. contents (be documented in patent document 6 In paragraph (0007)).Moreover, as one embodiment, describe front coldplate and adjacent inside coldplate it Between form initial cooling chamber (chamber), the last cooling chamber (chamber) in heat exchanger core is formed in rear coldplate and and its Purport content between adjacent inside coldplate (is documented in the paragraph (0128) of the document, but reference mark is omitted Note).Also, it illustrates to quote a pair of of fin component referring to Fig. 7 a to 7d, during each fin component is combined with different coldplates The purport content (be documented in the paragraph (0135) of the document, but invoking marks are omitted) of two pieces of coldplates thermo-contact.

Moreover, in following patent documents 7, to make it possible that miniaturization for project, proposes with less structure member Following heat exchangers and the exhaust gas heat recovery device for having the heat exchanger: the heat exchanger carries out in shell for one kind The heat exchanger of heat exchange between exhaust gas and cooling medium has and is disposed in parallel in the intracorporal multiple heat exchange segments of the shell With fluid tight in conjunction on the housing, to form cooling medium in each gap of the heat exchange segment adjacent to each other The mode of flow path supports the seal member of the multiple heat exchange segment；Constitute each heat exchange section of the multiple heat exchange segment Section has the framework that only there is the outside of opening, at least opening seal member to be utilized to seal fluid tightly on one face Be housed in the framework, a plurality of flow path with the waste gas stream for only allowing predetermined direction and in the upstream side of these flow paths and The guiding part that there is gas to import flow path and gas discharge duct in downstream side；Each framework opening have with it is described The gas discharge outlet that gas imports the gas introduction port of fluid communication and is connected to the gas discharge duct (is documented in patent text It offers in 7 paragraph (0012)).

[patent document 1] Japanese Unexamined Patent Publication 2008-157211 bulletin

[patent document 2] Japanese Unexamined Patent Publication 2012-132614 bulletin

[patent document 3] Japanese Unexamined Patent Publication 2015-25405 bulletin

[patent document 4] Japanese Unexamined Patent Publication 2014-194296 bulletin

[patent document 5] Japanese Unexamined Patent Publication 2013-213424 bulletin

No. 2014/0251579 bulletin of [patent document 6] U.S. Patent Application Publication

[patent document 7] international application discloses WO2016/140068 bulletin

For heat exchanger disclosed in above-mentioned each patent document, such as in patent document 1 with such a structure: making With " 9 heat-transfer pipes ", when being applied to exhaust gas heat recovery device, " upstream side end of bypass pipe and heat exchanger is fitted to In inlet cone, the end of downstream side of bypass pipe and heat exchanger is fitted to out in gas coning ".Also, it uses in patent document 2 Such structure: using the heat exchanger of " 3 or more heat-transfer pipes ", when being applied to exhaust gas heat recovery device, has: " introduction part for the exhaust gas that internal combustion engine generates is imported, is connected on the introduction part via upper passage, top is supported on gas The heat exchanger on component is flowed into, and is connected on the rear end of the heat exchanger, for use by the waste gas stream of heat exchanger Dynamic gas flows out component ".

Heat exchanger disclosed in above-listed patent document 1 to 5 be all both side ends be arranged import exhaust gas " inlet cone ", " introduction part " etc., and it is provided with " gas coning out " of discharge exhaust gas, " gas outflow component " etc., it substantially needs comprising main body 3 components in portion, the heat exchanger that is expected to miniaturise.Also, in order to which by exhaust gas equably delivery heat exchanger, having must To go out the countermeasure comprising being incorporated in the component before and after it, the scheme proposed in each patent document is all complicated structure, is not allowed Easily miniaturization.Moreover, being all that only heat exchanger miniaturization cannot bring exhaust gas heat recovery device to minimize immediately, assembling etc. is not yet It is easy.

In the exhaust gas heat recovery device that internal combustion engine carries, the cold start-up of low-temperature condition is in internal combustion engine and cooling medium When, it is necessary to so that cooling medium is rapidly heated up, it is necessary to the heat loss of the tortuous flow passage of inhibition importing exhaust gas as far as possible, but due to Above-mentioned " inlet cone ", the thermal capacity of " introduction part " are big, therefore it is required that reducing quality and surface area.Also, it is carried to automobile When, it integrally requires to miniaturise as device.Moreover, hot friendship is effectively performed in the cooling medium from heat exchanger From the perspective of changing, heat exchanger and exhaust gas heat recovery device disclosed in patent document 1 to 5 can not meet to be required recently Performance.Therefore, it maintains especially to make thermal capacity occupied by tortuous flow passage and space most while desired heat exchanger effectiveness Small chemical conversion is urgent problem.

On the other hand, the basic structure of heat exchanger disclosed in Patent Document 6 is different from above-mentioned each heat exchanger, does not have " inlet cone " and " outlet into cone " of separate part is set, but includes that their large-scale valve gear (valve body) is mounted on master In body portion, the also different requirement for surely coping with miniaturization.That is, the structure of the related heat exchange in patent document 6 despite with make Cooling medium is essentially identical structure by aforementioned each heat exchanger such in exhaust gas, but due to above-mentioned valve gear Relationship on be large-scale and complicated structure, need a large amount of components, therefore miniaturization is not easy.

Although also, proposed in patent document 7 with few structure member make it possible miniaturization heat exchanger and Exhaust gas heat recovery device, it may be desirable to can smallerization, effectively recycle heat.

Summary of the invention

Therefore, the present invention in the heat exchanger for carrying out the heat exchange between exhaust gas and cooling medium with few structure zero Component makes it possible to miniaturise as project.

Also, the present invention is to provide following exhaust gas heat recovery devices as project: making in heat exchanger through internal combustion engine The exhaust gas and cooling medium of tortuous flow passage carry out in exhaust gas heat recovery device of the heat exchange to recycle exhaust heat, by including detour It properly configures to flow path heat exchanger and can be small-sized and carries out effective recuperation of heat.

In order to achieve the above object, the heat exchanger of the heat exchange of the invention that exhaust gas and cooling medium are carried out in shell Have: the multiple heat exchange segments being set side by side in the shell, with the shell it is fluid tight combine, adjacent to each other Cooling medium stream is formed between each gap of the heat exchange segment and the inner surface of the shell and the heat exchange segment The seal member of the multiple heat exchange segment is supported to road, formation is connected on the housing, with the cooling medium flow path Cooling medium introducing port and cooling medium outlet, and be installed in the cooling medium introducing port and cooling medium outlet it Between, keep the holder of the multiple heat exchange segment, which, which has to have, blocks that in the multiple heat exchange segment The a part in the gap of the side opposite with the cooling medium introducing port between this 2 adjacent heat exchange segment is blocked Portion and the rectification part that the cooling medium imported from the cooling medium introducing port is directed to the cooling medium flow path； Each heat exchange segment for constituting the multiple heat exchange segment has: only having opening on one face, at least the opening is outer The framework that side utilizes the seal member to seal fluid tightly, and be housed in the framework, with only permission predetermined direction The a plurality of flow path of waste gas stream, while in the upstream side of a plurality of flow path and downstream side there is gas to import flow path and gas discharge stream The guiding part on road；There is the gas introduction port that fluid communication is imported with the gas in the opening of each framework, simultaneously With the gas discharge outlet being connected to the gas discharge duct.For example, above-mentioned framework is capable of forming as only in length direction There is the rectangular shape of opening on one face, but in this case, above-mentioned predetermined direction is length direction.

The two sides of the occlusion part can be arranged in, along the cooling using having in the rectification part in the holder The structure for a pair of of extension that medium introducing port direction extends.Also, the rectification part can be using the multiple with blocking At least described cooling between the lateral surface of heat exchange segment and the inner surface of the shell in two outsides in heat exchange segment The structure of the outside occlusion part of a part in the gap of medium introducing port side.

In above-mentioned heat exchanger, each guiding part of the multiple heat exchange segment has a heat exchange With plate bending, the structure of the fin (Japanese: Off ィ Application) for the waveform for being formed to have continuous S-shaped section, can also use should Block opening for the framework between the gas introduction port and the gas discharge outlet in one side of the extending direction of fin Mouthful, the structure that the both ends of the surface side of the fin is communicatively configured with the gas introduction port and the gas discharge outlet respectively.

Can have a plurality of gap being formed parallel to, the outside difference of the opening of the framework using the seal member It is fitted in the gap and supports the structure of the multiple heat exchange segment.Moreover, the seal member, which can also use, to be had Support the flat part of the multiple heat exchange segment and the combination of preset width that is uprightly arranged of outer edge around the flat part The structure in portion.Also, in the framework of each for constituting the multiple heat exchange segment, the gas discharge outlet is opened Open area is smaller than the opening area of the gas introduction port.

Also, exhaust gas heat recovery device of the invention has: the main exhaust flow path of the exhaust gas of internal combustion engine is imported, from the main row A part of difference on air-flow road and constitute gas introduction port, converge simultaneously with the other parts of the main exhaust flow path and constitute gas The tortuous flow passage of outlet, and make to carry out heat exchange by the exhaust gas and cooling medium of the tortuous flow passage to return in shell Receive the heat exchanger of exhaust heat；The heat exchanger has: the multiple heat exchange segments being set side by side in the shell, and described Shell fluid tightly in conjunction with, the heat exchange segment adjacent to each other each gap and the shell inner surface with it is described The seal member that cooling medium flow path twelve Earthly Branches hold the multiple heat exchange segment is formed between heat exchange segment, is formed in the shell The cooling medium introducing port and cooling medium outlet being connected on body, with the cooling medium flow path, and it is installed in the cooling Between medium introducing port and cooling medium outlet, the holder of the multiple heat exchange segment is kept, which has Have block in the multiple heat exchange segment between 2 heat exchange segments adjacent to each other with the cooling medium introducing port phase The occlusion part of a part in the gap of opposed side simultaneously guides the cooling medium imported from the cooling medium introducing port To the rectification part of the cooling medium flow path；Each heat exchange segment for constituting the multiple heat exchange segment has: only at one The framework that there is the outside of opening, at least opening seal member to be utilized to seal fluid tightly on face, and it is housed in this A plurality of flow path in framework, with the waste gas stream for only allowing predetermined direction, while in the upstream side and downstream side of a plurality of flow path The guiding part of flow path and gas discharge duct is imported with gas；Have in the opening of each framework and is led with the gas Enter the gas introduction port of fluid communication, which constitutes the gas introduction port of the tortuous flow passage, while in each institute The opening for stating framework has the gas discharge outlet being connected to the gas discharge duct, which constitutes the detour stream The gas discharge outlet on road.

The two sides of the occlusion part can be arranged in, along the cooling using having in the rectification part in the holder The structure for a pair of of extension that medium introducing port direction extends.Also, the rectification part can be using the multiple with blocking Between the lateral surface of heat exchange segment and the inner surface of the shell on the outside of two in heat exchange segment, at least described cooling Jie The structure of the outside occlusion part of a part in the gap of matter introducing port side.

It, can be using each guiding part tool of the multiple heat exchange segment in above-mentioned exhaust gas heat recovery device The fin of the standby waveform that a heat exchange plate is bent, is formed to have continuous S-shaped section, the extending direction of the fin A side block the opening of the framework between the gas introduction port and the gas discharge outlet, the both ends of the fin The structure that surface side is communicatively configured with the gas introduction port and the gas discharge outlet respectively.

The seal member can be using with a plurality of gap being formed parallel to, the outside difference of the opening of the framework It is fitted in the gap and supports the structure of the multiple heat exchange segment.Furthermore, it is possible to which there is branch using the seal member Hold the flat part of the multiple heat exchange segment and the engaging portion of preset width that is uprightly arranged of outer edge around the flat part Structure.And it is possible to using in the framework of each for constituting the multiple heat exchange segment, the gas discharge The opening area of gas introduction port described in the open area ratio of mouth is small.

The effect of invention: the present invention obtains following effect due to constituting as described above.That is, the present invention is in shell Carry out having in the heat exchanger of the heat exchange between exhaust gas and cooling medium in vivo: the multiple heat being set side by side in shell are handed over Change segment, with shell it is fluid tight combine, heat exchange segment adjacent to each other each gap and shell inner surface and heat Form cooling medium flow path twelve Earthly Branches between exchange segment and hold the seal members of multiple heat exchange segments, be formed on shell, with it is cold But the cooling medium introducing port and cooling medium outlet of medium fluid communication, and be installed in the cooling medium introducing port with it is cold But between medium outlet, the holder of multiple heat exchange segments is kept, which, which has to have, blocks multiple heat exchange sections The screening of a part in the gap of the side opposite with cooling medium introducing port in section between 2 heat exchange segments adjacent to each other Stopper and the rectification part that the cooling medium imported from cooling medium introducing port is directed to cooling medium flow path；Constitute multiple heat Each heat exchange segment of exchange segment has: only there is the outside of opening, at least opening to utilize seal member on one face The framework sealed fluid tightly, and be housed in the framework, a plurality of flow path with the waste gas stream for only allowing predetermined direction, together When in the upstream side of a plurality of flow path and downstream side there is gas to import flow path and gas discharge duct guiding part；Each The opening of framework has the gas introduction port that fluid communication is imported with gas, while having the gas being connected to gas discharge duct Outlet.Due to leading to exhaust gas in cooling medium, necessary space can be reduced to the greatest extent and carry out effective heat and handed over It changes, can miniaturise.

If the rectification part in above-mentioned holder is using 2 heat exchanges adjacent to each other blocked in multiple heat exchange segments If the structure of the occlusion part of a part in the gap of the side opposite with cooling medium introducing port between segment, it can make cold But medium is appropriate and swimmingly recycles between each heat exchange segment.Moreover, if rectification part is being blocked using with setting The two sides in portion, along cooling medium introducing port direction extend a pair of of extension structure if, cooling medium can be made suitably simultaneously And it is swimmingly recycled between each heat exchange segment.If also, rectification part is used to have and be blocked in multiple heat exchange segments The one of the gap of at least cooling medium introducing port side between the lateral surface of heat exchange segment and the inner surface of shell in two outsides If the structure of partial outside occlusion part, cooling medium can be made appropriate and swimmingly in the heat exchange segment in two outsides It is recycled between lateral surface and the inner surface of shell.

In above-mentioned heat exchanger, have if each guiding part of multiple heat exchange segments uses by a heat exchange With plate bending, the structure of the fin for the waveform for being formed to have continuous S-shaped section, a side of the extending direction of fin The opening of the framework between gas introduction port and gas discharge outlet is blocked, the both ends surface side of fin is gentle with gas introduction port respectively If the structure that body outlet communicatively configures, it can be easy and suitably assemble the good guiding part of heat exchanger effectiveness Into each heat exchange segment.

Moreover, in above-mentioned heat exchanger, if seal member is used with a plurality of gap being formed parallel to, framework If the outside of opening is fitted in gap the structure for supporting multiple heat exchange segments respectively, it can be easy and suitably liquid Seal to close property the framework of each heat exchange segment.Especially if using there is the flat part for supporting multiple heat exchange segments and surround If the seal member of the engaging portion for the preset width that the outer edge of flat part is uprightly arranged, it can be effectively reduced from each heat and hand over Change the heat that segment passes to the combination object of seal member.Moreover, in the framework of each for constituting multiple heat exchange segments In, if keeping the opening area of open area ratio gas introduction port of gas discharge outlet small, it can miniaturise.

Also, in exhaust gas heat recovery device of the invention, have: importing the main exhaust flow path of the exhaust gas of internal combustion engine, from A part of difference of main exhaust flow path and constitute gas introduction port, converge simultaneously with the other parts of main exhaust flow path and constitute gas The tortuous flow passage of body outlet, and make to carry out heat exchange by the exhaust gas and cooling medium of tortuous flow passage to return in shell Receive the heat exchanger of exhaust heat；Heat exchanger has: the multiple heat exchange segments being set side by side in shell, fluid tight with shell Ground combines, forms cooling between each gap of heat exchange segment adjacent to each other and the inner surface of shell and heat exchange segment Medium flow path twelve Earthly Branches hold the seal member of multiple heat exchange segments, the cooling for being formed on shell, being connected to cooling medium flow path Medium introducing port and cooling medium outlet, and be installed between cooling medium introducing port and cooling medium outlet, keep The holder of multiple heat exchange segments, holder have with 2 heat exchanges blocked in multiple heat exchange segments adjacent to each other The occlusion part of a part in the gap of the side opposite with cooling medium introducing port between segment will simultaneously be imported from cooling medium The cooling medium that mouth imports is directed to the rectification part of cooling medium flow path；Constitute each heat exchange segment tool of multiple heat exchange segments It is standby: the framework that only there is the outside for being open, being at least open seal member to be utilized to seal fluid tightly on one face, and receiving A plurality of flow path in framework, with the waste gas stream for only allowing predetermined direction, while in the upstream side and downstream side of a plurality of flow path The guiding part of flow path and gas discharge duct is imported with gas；Have in the opening of each framework and imports flow path company with gas Logical gas introduction port, gas introduction port constitute tortuous flow passage gas introduction port, while the opening of each framework have with The gas discharge outlet of gas discharge duct connection, gas discharge outlet constitute the gas discharge outlet of tortuous flow passage.For these reasons, Can minimize tortuous flow passage thermal capacity and its necessary space, be able to carry out effective recuperation of heat, can not only make Heat exchanger miniaturization, and entire exhaust gas heat recovery device can be made to minimize.

If the rectification part in above-mentioned holder is using with 2 heat adjacent to each other blocked in multiple heat exchange segments It, can if the structure for exchanging the occlusion part of a part in the gap of the side opposite with cooling medium introducing port between segment Keep cooling medium appropriate and is swimmingly recycled between each heat exchange segment.Moreover, if rectification part exists using with setting The two sides of occlusion part, a pair of of the extension extended along cooling medium introducing port direction structure if, cooling medium can be made suitable When and swimmingly recycled between each heat exchange segment.If also, rectification part uses to have and blocks multiple heat exchange segments In two outside the lateral surface of heat exchange segment and the inner surface of shell between at least cooling medium introducing port side gap A part outside occlusion part structure if, cooling medium can be made appropriate and swimmingly in the heat exchange section in two outsides It is recycled between the lateral surface of section and the inner surface of shell.

In above-mentioned exhaust gas heat recovery device, have if each guiding part of multiple heat exchange segments uses by one Heat exchange plate is bent, is formed to have the fin of the waveform in continuous S-shaped section, a side of the extending direction of fin The opening of the framework between gas introduction port and gas discharge outlet is blocked, the both ends surface side of fin and each gas introduction port are gentle If the structure that body outlet communicatively configures, it can be easy and suitably assemble the good guiding part of heat exchanger effectiveness Into each heat exchange segment.

If above-mentioned seal member is used with a plurality of gap being formed parallel to, the outside of the opening of framework is fitted into respectively If the structure for supporting multiple heat exchange segments in gap, it can be easy and suitably fluid tight seal each heat exchange The framework of segment.Especially if using having the flat part for supporting multiple heat exchange segments and upright around the outer edge of flat part If the seal member of the engaging portion of the preset width of setting, it can be effectively reduced from each heat exchange segment and pass to sealing The heat of the combination object of part.Moreover, in the framework of each for constituting multiple heat exchange segments, if making gas discharge outlet Open area ratio gas introduction port opening area it is small if, can miniaturise.

Detailed description of the invention

Fig. 1 is the lateral section view for having the exhaust gas heat recovery device of heat exchanger involved in one embodiment of the present invention Figure；

Fig. 2 is the broken section for indicating the flowing of cooling medium in heat exchanger involved in one embodiment of the present invention Figure；

Fig. 3 is the longitudinal section view of exhaust gas heat recovery device involved in one embodiment of the present invention；

Fig. 4 is the cross-sectional view of the relationship between the adjacent heat exchange segment indicated in one embodiment of the present invention；

Fig. 5 is to indicate to constitute to be supplied to shape before the assembling of components of heat exchange segment of one embodiment of the present invention etc. The perspective view of state；

Fig. 6 is the solid that expression is supplied to the heat exchange segment of one embodiment of the present invention and the assembled state of holder Figure；

Fig. 7 is the perspective view from heat exchanger involved in one embodiment of the present invention in terms of the opening side of shell；

Fig. 8 is the perspective view for being supplied to the partition wall member of one embodiment of the present invention；

Fig. 9 is the vertical profile view for constituting the cover of framework for the heat exchange segment for being supplied to one embodiment of the present invention Figure；

Figure 10 is the main view for constituting the framework for the heat exchange segment for being supplied to one embodiment of the present invention；

Figure 11 is to indicate that multiple heat exchange segments and holder are mounted on the sealing for being supplied to one embodiment of the present invention The top view of state on component；

Figure 12 is to indicate that heat exchange segment and holder are mounted on the seal member for being supplied to one embodiment of the present invention On state side view；

Figure 13 is the side view for being supplied to the upper housing of one embodiment of the present invention；

Figure 14 is the longitudinal section view for being supplied to the upper housing of one embodiment of the present invention；

Figure 15 is the partial sectional view of exhaust gas heat recovery device involved in one embodiment of the present invention；

Figure 16 is the top view of exhaust gas heat recovery device involved in one embodiment of the present invention；

Figure 17 is the main view of exhaust gas heat recovery device involved in one embodiment of the present invention；

Figure 18 is the transverse direction for having the exhaust gas heat recovery device of heat exchanger involved in other embodiments of the invention Cross-sectional view；

Figure 19 is the office of the flowing of the cooling medium in heat exchanger involved in expression other embodiments of the invention Portion's cross-sectional view；

Figure 20 is the longitudinal section view of exhaust gas heat recovery device involved in other embodiments of the invention；

Figure 21 is the cross-sectional view of the relationship between heat exchange segment adjacent in expression other embodiments of the invention；

Figure 22 is to indicate to constitute the assembling for being supplied to components of heat exchange segment of other embodiments of the invention etc. The perspective view of preceding state；

Figure 23 is heat exchange segment and the assembled state of holder for indicating to be supplied to other embodiments of the invention Perspective view；

Figure 24 is the perspective view of heat exchanger involved in other embodiments of the invention in terms of the open side of shell；

Figure 25 is the perspective view for being supplied to the partition wall member of other embodiments of the invention；

Figure 26 is to indicate that multiple heat exchange segments and holder are mounted on and are supplied to the close of other embodiments of the invention Seal the top view of the state on component；

Figure 27 is to indicate that heat exchange segment and holder are mounted on the sealing for being supplied to other embodiments of the invention The side view of state on part；

Figure 28 is the partial sectional view of exhaust gas heat recovery device involved in other embodiments of the invention；

Figure 29 is the perspective view for indicating to be supplied to holder involved in other forms of other embodiments of the invention；

Figure 30 is to indicate to be supplied to the vertical of holder involved in the still other form of other embodiments of the invention Body figure；

Figure 31 is the perspective view for indicating to be supplied to holder involved in the other form of other embodiments of the invention；

Figure 32 is to indicate to be supplied to the vertical of holder involved in another other form of other embodiments of the invention Body figure.

In figure, 1-heat exchanger；2-main exhaust flow paths；2a-branch portion；2b-fluidic junction；3-tortuous flow passages；3a, 11a-gas introduction port；3b, 11b-gas discharge outlet；4-valve gears；10-heat exchange segments；11-frameworks；12-guidings Component；13-fins；21-upper housings；21b-cooling medium introducing port；21c-cooling medium outlet；22-lower cases； 23-seal members；24-holders；24s-supporting part；24x, 24y, 24z-rectification part；24xa,24xb,24ya,24yb— Outside occlusion part (rectification part)；24xc-occlusion part (rectification part)；24xd-extension (rectification part)；24xg, 24yg-comb teeth (rectification part)；25,26-partition wall member；27-wire meshes；28-brackets；41-the 1 valve member；42-counterweights (the 2nd valve portion Part)；43-shaft members；50-actuators

Specific embodiment

Illustrate the preferred embodiment of the present invention with reference to the accompanying drawings.Fig. 1 to Fig. 3 is to indicate have one implementation of the present invention The figure of the exhaust gas heat recovery device of heat exchanger 1 involved in mode, has: importing the main row of the exhaust gas of internal combustion engine (not shown) Air-flow road 2 from 2 branch of main exhaust flow path and the tortuous flow passage 3 that converges with main exhaust flow path 2, and is carried out through the detour Heat exchange between the exhaust gas and cooling medium of flow path 3 is to recycle the heat exchanger 1 of exhaust heat.In the present embodiment, it arranges The shell 20 of gas heat recovery apparatus is by configuring the upper housing 21 above (in the state of mounted on a vehicle) of main exhaust flow path 2 Be formed as framework shape with lower case 22 in combination, separated fluid tightly using seal member 23.In addition, in this embodiment party In formula, it is bonded lower case 22 by 2 components 22a and 22b, is combined with ingress pipe 22c on a component 22a.Moreover, setting It is equipped with the valve gear 4 of the connection of opening and closing main exhaust flow path 2 and tortuous flow passage 3, heat exchanger 1 is illustrated first.

The shell of the heat exchanger 1 of present embodiment is made of the upper housing 21 of exhaust gas heat recovery device, such as Fig. 1 to Fig. 7 It is shown, there are multiple (present embodiment is 6) heat exchange segments (being that representative indicates with 10), each heat exchange segment 10 is by only The framework 11 being open on one side and the guiding part 12 being housed in the framework 11 are constituted.The framework 11 of present embodiment is formed as long Spend direction underside plan portion opening rectangular shape, but can also be formed as such as two sides be square, underside plan The rectangular shape of portion's opening, or be formed as in the top of Fig. 1 etc. being semicircle, downside with arc-shaped surface, two sides The shape etc. of planar portions opening.

Each guiding part 12 has the waste gas stream for only allowing predetermined direction (length direction that present embodiment is framework 11) Dynamic a plurality of flow path GP, and with downstream side there is gas to import flow path GI and gas discharge duct GO at upstream side, as after As face will describe, the opening of each framework 11, which has, imports the gas introduction port 11a that flow path GI is connected to gas, and has The gas discharge outlet 11b being connected to gas discharge duct GO.Above-mentioned 6 heat exchange segments 10 separate scheduled gap and match in parallel It sets, with opening face 10a phase the same side of each heat exchange segment 10 there is the upper housing 21 of opening 21a to surround.Therefore, 6 Heat exchange segment 10 is housed in upper housing 21, by predetermined direction (the length side of framework 11 that each heat exchange segment 10 is arranged in To) before and after gas introduction port 11a and gas discharge outlet 11b respectively constitute tortuous flow passage 3 gas introduction port 3a and gas row Export 3b.

Above-mentioned heat exchanger 1 separates the inside of upper housing 21 fluid tightly, has the outside at least by the opening of framework 11 The seal member 23 sealed in liquid-tight manner.As shown in Figure 5 and Figure 6, which has flat part 23f and surrounds the flat part The engaging portion 23c for the preset width that the outer edge of 23f is uprightly arranged is set in parallel gap in 6 places of flat part 23f (being that representative indicates with 23a).As shown in Figure 1, the seal member 23 of present embodiment engaging portion 23c be clamped in upper housing 21 with It is combined in the state of between lower case 22.Upper housing 21 is framework shape shown in Figure 13 and Figure 14, on substantially straight line It is formed with cooling medium introducing port 21b and cooling medium outlet 21c.Also, it as shown in Figure 1 to Figure 3, is kept by holder 24 The structures of multiple heat exchange segments 10 be to configure cooling medium introducing port 21b in upper housing 21 and cooling medium is discharged Between mouth 21c.It is fitted in cooling medium introducing port 21b in addition, importing side ducts Ftb, discharge side ducts Ftc is fitted to cooling In medium outlet 21c.

As shown in figure 5, each heat exchange segment 10 is fitted in each gap 23a and welds in the state of being kept with holder 24 It connects, becomes assembled state shown in Fig. 6 (and aftermentioned Figure 11 and Figure 12), accommodate as Fig. 1 and as shown in Figure 2 and arrive upper housing 21 It is interior.As a result, between the outer peripheral surface of the inner surface and 6 heat exchange segments 10 of upper housing 21 and seal member 23 and these Cooling medium flow path FP is formed in gap between the framework 11,11 adjacent to each other of heat exchange segment 10.As described above, in this reality It applies in mode, since cooling medium introducing port 21b and cooling medium outlet 21c are formed on substantially straight line, really It protects cooling medium in the FP of cooling medium stream road swimmingly to flow, while as being explained in detail below, ensuring to fit using holder 24 Together in the flowing of heat exchange.

The holder 24 of present embodiment has U-shaped section as shown in Figure 5 and Figure 6, utilizes supporting part 24s above Each heat exchange segment 10 is kept with side surface part 24sa, 24sb, between holder 24 and the inner surface of upper housing 21 and each heat It exchanges and constitutes cooling medium flow path FP between segment 10, and there are following rectification parts, imported from cooling medium introducing port 21b Cooling medium is directed to each cooling medium flow path FP by the rectification part.The rectification part of present embodiment is in cooling medium introducing port 21b and cooling medium outlet 21c nearby be respectively provided with outside occlusion part 24xa, 24xb, 24ya, 24yb, while with cooling The opposite side medium introducing port 21b has occlusion part 24xc and a pair of of extension 24xd, 24xd.In addition, side surface part 24sa, On the inside of the central portion of 24sb, it is formed with the lug boss 24t of L-shaped, for aftermentioned positioning.

Outside occlusion part 24xa, 24xb, 24ya, 24yb of present embodiment are the both ends of each side surface part 24sa, 24sb Curved part outward constitutes the roughly the same interference plate of width.That is, occlusion part 24xa, 24xb, 24ya, 24yb on the outside Side end face and upper housing 21 medial surface between formed preset width gap, also constitute cooling medium stream in these gaps Road FP.Moreover, the end of the side cooling medium introducing port 21b of occlusion part 24xa, 24xb has been respectively formed beneath and has prolonged on the outside Extending portion 24xe, 24xf forms slight gap between these end faces and the medial surface of seal member 23, each as shown in figure 11 When heat exchange segment 10 thermally expands, the end face of extension 24xe, 24xf can be abutted against with the medial surface of seal member 23, be maintained Above-mentioned cooling medium flow path FP.

On the other hand, occlusion part 24xc is to block between 2 heat exchange segments 10,10 adjacent to each other and cooling medium The structure of a part (top of Fig. 1 to Fig. 6) in the gap of the opposite side introducing port 21b, in the present embodiment, such as Fig. 5 With shown in Fig. 6, lower section is extended to from the one end (end of the side cooling medium introducing port 21b) of supporting part 24s, blocks center Heat exchange segment 10,10 between top.Also, the top width formation of occlusion part 24xc is very wide, to install holder The end face of heat exchange segment 10,10 when 24 with two sides abuts against.Moreover, being provided in the two sides of occlusion part 24xc along cooling A pair of of extension 24xd, 24xd that the direction of medium introducing port 21b extends, cooling Jie imported from cooling medium introducing port 21b Matter is by along the lower section of Fig. 6 and left and right directions guidance.As shown in Figure 1, the top on the top of each extension 24xd and importing side ducts Ftb End abuts against, and each extension 24xd is for importing the positioning (retainer) when side ducts Ftb is fitted in cooling medium introducing port 21b It uses.

As shown in Fig. 5 (and aftermentioned Figure 10), 2 covers 11x's and 11y of the framework 11 of each heat exchange segment 10 is opened Mouth sidewall portion combines, and is formed as (face opening of length direction) rectangular shape.In the opening portion of cover 11x, 11y Center has extended to form snap-latch piece 11z, and when cover 11x and 11y are combined, two snap-latch piece 11z are overlapped, and is able to maintain guidance part Part 12 (aftermentioned fin 13).As shown in Figures 2 to 6, each framework 11 has outwardly projecting in the side its gas introduction port 11a 3 lug bosses (being indicated using 11p as representative), with the side of the lug boss 11p of outermost heat exchange segment 10 and holder 24 The mode that the contacted inner surfaces of facial 24sa, 24sb connect is arranged.Therefore, cooling medium can by between each lug boss 11p and Between the inner surface of holder 24, while above-mentioned each gap can also be passed through.

Moreover, being also formed with the lug boss of multiple protrusion shapes in each framework 11 other than being formed with above-mentioned lug boss 11p 11q, 11r, as shown in figure 4, limiting the gap between adjacent framework 11,11 by lug boss 11p, 11q, 11r, while as Fig. 2 It is shown such, when holder 24 is installed, carried out with the lug boss 24t of 24 inside the lug boss 11r in center and holder Lower and left and right directions positioning.Therefore, by the rectification part of holder 24 (24xa etc.) as being indicated in Fig. 1 and Fig. 2 with solid arrow As guide cooling medium, for example, due to the middle part cooling medium of the width direction that can make each heat exchange segment 10 Flow velocity is fast, is slowly adjusted in end flow velocity, therefore heat exchange can be equably carried out in each heat exchange segment 10.Separately Outside, although in Fig. 1 protrusions portion 11p, 11q, 11r because unrelated with the flowing of gas, it is contemplated that it is visual and the illustration is omitted, But the inboard (recessed portion) of each lug boss is illustrated as the inner surface of the cover 11x of Fig. 5 in framework 11.

As shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, the guiding part 12 of each heat exchange segment 10 of present embodiment is by a warm Exchange is bent to have the wavy fin 13 in continuous S-shaped section to constitute with plate.Also, such as Fig. 1 and Fig. 7 institute Show, a side 13a of the extending direction of fin 13 blocks the opening of the length direction of framework 11, while the both ends of the surface of fin 13 13b, 13c respectively with gas introduction port 11a (and then gas introduction port 3a with tortuous flow passage 3) and gas discharge outlet 11b is (in turn It is communicatively configured with the gas discharge outlet 3b of tortuous flow passage 3).Therefore, the flow path (GI, GP, GO) of exhaust gas shown in FIG. 1 is constituted, Exhaust gas is flowed as shown in dotted arrow.That is, indicating cold by making exhaust gas shown in dotted arrow lead to solid arrow in Fig. 1 But effective heat exchange is carried out in medium.

As shown in Figure 1 and Figure 7, in above-mentioned each framework 11, the opening area of gas discharge outlet 11b is set as leading than gas Small (in other words, the opening area of the open area ratio gas discharge outlet 11b of gas introduction port 11a of the opening area of entrance 11a Greatly).Specifically, under the actual use state of heat exchanger 1 (when real vehicle carries operation), according to being imported to heat exchanger 1 and Temperature and flow of the temperature and flow of the gas of discharge and the cooling medium of importing and discharge etc. are calculated to each heat exchange section The minimum and maximum heat of section 10, suitably sets the air-flow of tortuous flow passage 3 opening of the gas introduction port 11a as bottleneck The opening area (flow path area) of area (flow path area) and gas discharge outlet 11b.

In this case, heat exchange being carried out via fin 13 due to the air-flow of tortuous flow passage 3, volume flow is reduced, because This, is even if the opening area of gas discharge outlet 11b is set as smaller than the opening area of gas introduction port 11a as described above, It can also ensure that necessary flow path area.Therefore, in the present embodiment, multiplied by introducing gas into the opening area of mouthful 11a With the opening area of scheduled coefficient (less than 1) setting gas discharge outlet 11b.As a result, the miniaturization of framework 11 is possibly realized, support The miniaturization of its seal member 23 even shell (upper housing 21) is possibly realized.Also, in the present embodiment, such as from Fig. 5 As known to (and Fig. 7), it can be matched according to fin 13 (a side 13a) relative to the opening of the length direction of framework 11 It sets, the ratio of the opening area of appropriate adjustment gas introduction port 11a and gas discharge outlet 11b.

When above-mentioned cover 11x and 11y combines (or framework 11 is combined with fin 13), suitably by welding etc. Air-tightness is fluid tight fixed, but in the welding after each heat exchange segment 10 is fitted in each gap 23a, utilization is aforementioned Holder 24 is effectively combined.Therefore, the opening of the above-mentioned length direction in framework 11 can utilize the extending direction of fin 13 A side 13a be separated into the side gas introduction port 11a and the side gas discharge outlet 11b.It in addition to this, both can will in addition Component (not shown) be integrated in framework 11, or can also be integrally formed with framework 11 closure (not shown).Moreover, As Fig. 1 and as shown in Figure 3, the wire mesh 27 of buffer unit effect has been installed between framework 11 and lower case 22.

Referring to Fig. 5 and Fig. 6 and Fig. 9 to Figure 14 by the assembling sequence of primary structure components to above-mentioned heat exchanger 1 is illustrated.Indicate the cover 11x in the vertical section cover 11y roughly the same with shape therewith with the opening of the two in Fig. 9 The mode that sidewall portion is overlapped combines, and forms framework 11 shown in Fig. 10.Therefore, as shown in figure 5, when arriving framework in the receiving of fin 13 When cover 11x and 11y are combined in the state of in 11, one in 6 heat exchange segments 10 shown in fig. 6 is constituted.

As shown in figure 5,6 places on seal member 23 are formed parallel to have the gap 23a, when each heat exchange segment 10 When being fitted in each gap 23a, supported as shown in Fig. 6 (and Figure 11 and Figure 12).Then, with holder shown in fig. 5 24 two sides face 24sa and 24sb clamp 6 heat exchange segments 10, while as shown in FIG. 6, to block and cooling medium Occlusion part 24xc is arranged in the mode on the top in the gap between 2 heat exchange segments 10,10 of the opposite side introducing port 21b, In the state that each framework 11 for constituting 6 heat exchange segments 10 is kept the holding of part 24, by being solder-bonded to seal member On 23.Therefore, because fixture when holder 24 plays a part of in conjunction with process, therefore other knot is not needed as before The fixture for closing process, can combine rapidly and swimmingly.

On the other hand, the valve gear 4 for being supplied to the exhaust gas heat recovery device of present embodiment is mounted in lower case 22, such as Shown in Fig. 1, it is formed in lower case 22 and is branched off into the branch portion 2a of tortuous flow passage 3 from main exhaust flow path 2 and from tortuous flow passage 3 (via aftermentioned 2nd valve member 42) converges to the fluidic junction 2b of main exhaust flow path 2.Also, the partition wall member with valve seat 25a 25 are integrated on component 22a, and thus branch portion 2a is separated with fluidic junction 2b.In addition, partition wall member 25 has shape shown in Fig. 8 Shape, as configuring as shown in Figure 7.

As shown in Figure 1, valve gear 4 has: the 1st valve member 41 of opening and closing main exhaust flow path 2, the 2nd of opening and closing tortuous flow passage 3 the Valve member 42 supports the single shaft member 43 of these the 1st and the 2nd valve members 41,42, and keeps around 43 ground of shaft member, branch Hold the holding member 44 at least one side (being the left lateral sides of Fig. 3 in present embodiment) of lower case 22；By activating Device 50 (shown in Figure 15) rotates drive shaft component 43.2nd valve member of present embodiment is by being incorporated in disk-shaped 1st valve member 41 Top end part on counterweight 42 constitute, centered on the shaft member 43 being supported on the shaft on holding member 44 rotatably mountedly, with the 1st valve Component 41 integrally carries out pintle movement.Therefore, when the 1st valve member 41 opens main exhaust flow path 2, the top limit of counterweight 42 Tortuous flow passage 3 processed, plays the 2nd valve member.(non-heat exchange when thereby, it is possible to suitably inhibit main exhaust flow path 2 to be connected to When) high temperature exhaust gas flow into tortuous flow passage 3 in.

As shown in figure 3, being fixed with bracket 28 in lower case 22, the holding member 44 of valve gear 4 is supported on the bracket 28. It is housed in the outside that the shaft member 43 that the holding member 44 supports interior, rotatably mountedly extends to lower case 22, is propped up by one end The reset spring 45 that frame 28 engages exerts a force towards the direction of predetermined position (closed position of the 1st valve member 41).Moreover, in shaft member 43 top end part is equipped with handle 46, and as shown in figure 15, the top end part 50d for constituting the body of rod 50a of actuator 50 can be with handle 46 end 46a offsets to be grounded and be arranged.Also, as shown in Figure 15 to Figure 17, pipeline is configured as follows: internal combustion engine (not shown) Cooling medium is imported into upper housing 21 via importing side ducts Ftb from cooling medium introducing port 21b, from cooling medium outlet High-temperature cooling medium after the heat exchange of 21c discharge flows back into internal combustion engine via discharge side ducts Ftc and temperature detecting part Ftx In (not shown).

As shown in figure 15, it has been used in the present embodiment as actuator 50 and as in the past has been built-in with temperature sensitivity Any temperature-sensitive components (thermocouple) 50b of wax (Japanese: temperature sense ying ワ ッ Network ス), after heat exchange in temperature detecting part Ftx Coolant temperature so that any temperature-sensitive components 50b is overcome the force of reset spring 50c and is driven forwards body of rod 50a, but can also To use negative pressure driving actuator, motor etc..

For the exhaust gas heat recovery device of above structure, Fig. 1 to Shape Representation shown in Fig. 3 is internal combustion engine (not shown) Priority reclamation exhaust heat makes the shape that cooling medium rapidly heats up, heat supplier and heating installation use (when low temperature) in warm State is completely closed but it is also possible to be main exhaust flow path 2 by the 1st valve member 41 while the state of 3 standard-sized sheet of tortuous flow passage.As a result, as Indicate that the flowing of exhaust gas is such with dotted arrow, it is all (circuitous from gas introduction port 11a from the exhaust gas of exhaust pipe inflow (not shown) The gas introduction port 3a on reflux road 3) inflow heat exchanger 1, initiatively recycles heat (cooling), from gas discharge outlet 11b (detour The gas discharge outlet 3b of flow path 3) it is discharged into main exhaust flow path 2.In addition, in warm (when low temperature), preferably with the 1st valve Component 41 makes main exhaust flow path 2 become fully closed state, but since exhaust gas need not interdict completely, the row of main exhaust flow path 2 As long as throughput reduces necessary amount, it is not necessary that become full-shut position, be also possible to the state slightly opened.

On the other hand, when the exhaust efficiency when internal combustion engine (not shown) middling speed is rotated to high speed rotation is preferential, the 1st and 2 valve members 41,42 make main exhaust flow path 2 become full-gear, simultaneously by the driving as being indicated in Fig. 1 with double dot dash line Become tortuous flow passage 3 (gas discharge outlet 3b) by the 2nd valve member 42 substantially completely closed state, exhaust gas almost all is from master Exhaust flow path 2 is discharged to exhaust pipe is (not shown).

Figure 18 to Figure 32 be other embodiments of the present invention involved in heat exchanger, below to shown in Fig. 1 to Figure 17 Embodiment substantially the same structure member of structure member or structure member with the same function addition and Fig. 1 To the identical label of Figure 17, the repetitive description thereof will be omitted.Also, drawing corresponding with earlier figures 9, Figure 10, Figure 13 and Figure 14 saves Slightly.In the embodiment shown in Figure 18 to Figure 32, since the structure for being mainly holder 24 is different from aforementioned embodiments, because It is illustrated centered on holder 24 and structure associated therewith below this.

As shown in Figure 22 and Figure 23, the rectification part (24x, 24y) of present embodiment is comb form, constitutes these combs 5 comb teeth in addition to outside occlusion part 24xa, 24xb, 24ya, 24yb corresponding with the comb teeth in two outsides in 7 comb teeth (indicating by representative of 24xg, 24yg), above-mentioned 6 heat exchange segments 10 are mounted in each gap adjacent to each other, to each gap Constitute cooling medium flow path (label omits).In addition, the comb teeth in the center in 5 comb teeth (24xg) and the occlusion part of Fig. 5 and Fig. 6 24xc is corresponding.Also, in the present embodiment, the comb teeth of rectification part from the face opposite with seal member 23 of each framework 11 The frame shape supporting part 24s (therefore have and be open for 24 hours) that the ground connection that offsets is arranged extends along the direction of seal member 23, while along (frame The length direction of body 11) it spaced a predetermined distance from is arranged in parallel.Also, in rectification part, 5 comb teeth (24xc, 24yc) are formed Than as two outside comb teeth outside occlusion part 24xa, 24xb, 24ya, 24yb it is short, on the outside occlusion part 24xa, 24xb, The inside of 24ya, 24yb are formed with the ladder with gap (S) as shown in figure 22.

As shown in Figure 22 to Figure 27, each framework 11 has outwardly projecting a pair of of protrusion in the side its gas introduction port 11a Portion 11p, 11p, outside occlusion part 24xa, 24xb of the comb teeth as two outsides and these lug bosses 11p, 11p ground connection that offsets are matched If.Therefore, gap (S) is formed between occlusion part 24xa, 24xb and the outer surface of framework 11 on the outside, the major part of cooling medium Lower section is directed to by outside occlusion part 24xa, 24xb, and a part of cooling medium can pass through gap (S).Moreover, each frame On body 11 other than above-mentioned lug boss 11p, it is also formed with lug boss 11q, 11r of multiple overshooting shapes, as shown in figure 21, by convex It plays portion 11p, 11q, 11r and provides the gap between adjacent framework 11,11, while picture is as shown in Figure 23, gas introduction port 11a Lug boss 11r, 11r adjacent to each other of side is positioned for outside occlusion part 24xa, 24xb.In addition, in gas discharge outlet 11b Side does not form above-mentioned lug boss 11p, 11r, and is formed with multiple lug boss 11q.Therefore, cooling medium is as Figure 18 and Figure 19 It is middle indicated with solid arrow as be kept part 24 rectification part (24x, 24y) guidance, for example, since each heat exchange can be made The flow velocity of the middle part cooling medium of the width direction of segment 10 is fast, is adjusted slack-offly in end, therefore can be in each heat Exchange equably carries out heat exchange in segment 10.

Each heat exchange segment 10 in present embodiment is constituted in the same manner as aforementioned embodiments.Also, in each framework 11 The opening area of middle gas discharge outlet 11b is set as (in other words, gas introduction port smaller than the opening area of gas introduction port 11a The opening area of the open area ratio gas discharge outlet 11b of 11a is big), (real vehicle is taken under the real use state of heat exchanger 1 When carrying row), it is situated between according to the temperature of the gas of importing and discharge to heat exchanger 1 and flow and the cooling of importing and discharge The temperature of matter and flow etc. calculate the minimum and maximum heat to each heat exchange segment 10, suitably set gas introduction port 11a's The opening area (flow path area) of opening area (flow path area) and gas discharge outlet 11b.For example, same with aforementioned embodiments Sample, can according to fin 13 (a side 13a) relative to the opening of the length direction of framework 11 configuration come appropriate adjustment gas The ratio of the opening area of body introducing port 11a and gas discharge outlet 11b.

When combining above-mentioned cover 11x and 11y (or combining framework 11 and fin 13), pass through the appropriate gas such as welding Close property is fluid tight fixed, but in welding after each heat exchange segment 10 is fitted in each gap 23a, utilizes holder 24 Combination is effectively performed.In addition, as shown in Figure 18 and Figure 19, being clamped between framework 11 and lower case 22 (and holding member 44) The wire mesh 27 for having there is buffer unit to act on.In the heat exchanger 1 of present embodiment, vertical section cover identical with Fig. 9 Part 11x and shape the open side wall portion that roughly the same cover 11y both makes therewith combine with being overlapped, and are formed identical as Figure 10 Framework 11, as shown in figure 22, if cover 11x is in conjunction with 11y in the state that the receiving of fin 13 is in framework 11, structure At one in 6 heat exchange segments 10 shown in Figure 23.

As shown in figure 22, it is formed parallel to have the gap 23a in 6 places of seal member 23, when each heat exchange segment 10 When being fitted in each gap 23a, supported as illustrated in fig. 22.Then, the comb teeth 24xg of holder 24 shown in Figure 22 and 24yg is installed in adjacent each gap of 6 heat exchange segments 10, while picture is as shown in Figure 22, as two outside comb teeth Outside occlusion part 24xa, 24xb offset to be grounded respectively with lug boss 11p, 11p of the heat exchange segment 10 of two sides and be arranged, and constitute 6 Each framework 11 of a heat exchange segment 10 with holder 24 in the state of being kept by being solder-bonded on seal member 23.Cause This, in the present embodiment, fixture when plaing a part of due to holder 24 in conjunction with process does not need another as before Outer combination process fixture, can combine rapidly and swimmingly.

Additionally, it is provided it is same as aforementioned embodiments to the valve gear 4 of the exhaust gas heat recovery device of present embodiment, but In present embodiment, the partition wall member 26 with intercommunicating pore 26a is supported on component 22b, partition wall member 25 and 26 be located at Figure 24 with Positional relationship shown in Figure 25.Also, holding member 44 is one (left side of Figure 20) for seeming to be only braced at lower case 22 Cantilever support structure on side, as the holding member 44 be entrenched in partition wall member 25 shown in Figure 25 intercommunicating pore 25b, It on two supports next door component 25, therefore is essentially two supports structure in 25b.Therefore, when the 1st valve member 41 will be led When exhaust flow path 2 is opened, the top of counterweight 42 enters in the intercommunicating pore 26a of partition wall member 26, limits tortuous flow passage 3, plays the 2nd valve The effect of component.And as shown in figure 28, the cooling medium of internal combustion engine (not shown) is via importing side ducts Ftb from cooling medium Introducing port 21b is imported in upper housing 21, from the High-temperature cooling medium after the heat exchange that cooling medium outlet 21c is discharged via row Side ducts Ftc and temperature detecting part Ftx flows back into ground pipeline installation in internal combustion engine (not shown) out.

Therefore, in the exhaust gas heat recovery device of present embodiment, make internal combustion engine (not shown) warming-up process (when low temperature) The flowing of middle exhaust gas in Figure 18 with dotted arrow as being indicated, from the exhaust gas of exhaust pipe inflow (not shown) all from gas Introducing port 11a (the gas introduction port 3a of tortuous flow passage 3) inflow heat exchanger 1 initiatively recycles heat (cooling), arranges from gas Outlet 11b (the gas discharge outlet 3b of tortuous flow passage 3) is discharged into main exhaust flow path 2.On the other hand, internal combustion engine (not shown) When exhaust efficiency when middling speed is rotated to high speed rotation is preferential, the 1st and the 2nd valve member 41,42 as in Figure 18 double dot dash line indicate It is driven like that, main exhaust flow path 2 becomes full-gear, while tortuous flow passage 3 (gas discharge outlet 3b) becomes by the 2nd valve member 42 states almost closed, exhaust gas almost all is from main exhaust flow path 2 to exhaust pipe discharge (not shown).

Figure 29 is the figure for indicating to be supplied to other forms of the holder of above-mentioned other embodiments, with reality shown in Figure 22 The mode of applying is compared.Interval between the rectification part (24x, 24y) of 2 comb forms is narrow, supporting part 24s width ninor feature at.Figure 30 be the figure for indicating to be supplied to the still other form of the holder of above-mentioned other embodiments, has the whole of 3 comb forms Stream portion (24x, 24y, 24z), their comb teeth extend from supporting part 24s along 23 direction of seal member, while along the (length of framework 11 Degree direction) it spaced a predetermined distance from is arranged in parallel.Constitute removing in 7 comb teeth of each comb of rectification part (24x, 24y, 24z) 5 comb teeth in two outsides are installed in each gap adjacent to each other of above-mentioned 6 heat exchange segments 10, constitute the cold of relatively each gap But medium flow path.Also, in rectification part (24z) also with rectification part (24x, 24y) equally, 5 comb teeth than two outside comb teeth (outside occlusion part) is formed shortly, and the inside of occlusion part forms the ladder with gap (S) on the outside, it is ensured that flow path.

Also, Figure 31 is the figure for indicating to be supplied to the other form of the holder of above-mentioned other embodiments, is not provided with Supporting part 24s in foregoing morphologies, the rectification parts (24x, 24y) of independent 2 comb forms along framework 11 length direction every Preset distance is opened to be arranged in parallel.Figure 32 is the another other form for indicating to be supplied to the holder of above-mentioned other embodiments Figure, the form are also not provided with supporting part 24s, and the rectification part (24x, 24y, 24z) of independent 3 comb forms is along framework 11 Length direction is spaced a predetermined distance to be arranged in parallel.Other structures of the Figure 29 into Figure 32 are due to the structure phase with the expressions such as Figure 18 Together, therefore with Figure 18 etc., the identical label such as the addition of substantially the same structure member and Figure 18, will illustrate to omit.

In addition, it is not limited to multiple heat under state mounted on a vehicle shown in Fig. 1 and Fig. 3 and Figure 18 and Figure 20 The configuration of segment 10 is exchanged, each heat exchange segment 10 can also be in the paper up and down direction along Fig. 1 and Fig. 3 and Figure 18 and Figure 20 It is mounted on a vehicle in the state of stacking.Also, exhaust gas heat recovery device of the invention is with above-mentioned heat exchanger 1, main exhaust stream Road 2 and tortuous flow passage 3 are basic structure, it is not limited to purposes, the title of device.That is, and not staying in and being clipped on internal combustion engine Exhaust pipe in narrow sense exhaust gas heat recovering instrument, for example, for as the so-called EGR refrigerator being mounted in internal combustion engine with Result has but recycled the device of exhaust heat for the purpose of cooling exhaust gas, can also obtain desired effect using the present invention.

Claims (14)

1. a kind of heat exchanger is carrying out the heat exchange between exhaust gas and cooling medium, which is characterized in that have in shell:

The multiple heat exchange segments being set side by side in the shell,

With the shell it is fluid tight in conjunction with, in each gap of the heat exchange segment adjacent to each other and the shell The seal member that cooling medium flow path twelve Earthly Branches hold the multiple heat exchange segment is formed between surface and the heat exchange segment,

The cooling medium introducing port and cooling medium outlet that formation is connected on the housing, with the cooling medium flow path, And

It is installed between the cooling medium introducing port and cooling medium outlet, keeps the holding of the multiple heat exchange segment Part, the holder have with block in the multiple heat exchange segment between 2 heat exchange segments adjacent to each other with institute It states the occlusion part of a part in the gap of the opposite side of cooling medium introducing port and will be imported from the cooling medium introducing port The cooling medium be directed to the rectification part of the cooling medium flow path；

Each heat exchange segment for constituting the multiple heat exchange segment has:

The framework that only there is the outside of opening, at least opening seal member to be utilized to seal fluid tightly on one face, And

It is housed in the framework, a plurality of flow path with the waste gas stream for only allowing predetermined direction, while in the upper of a plurality of flow path Swim the guiding part that there is gas to import flow path and gas discharge duct for side and downstream side；

Each framework opening have with the gas import fluid communication gas introduction port, while have with it is described The gas discharge outlet of gas discharge duct connection.

2. heat exchanger as described in claim 1, which is characterized in that the rectification part, which has, is arranged in the two of the occlusion part Side, a pair of of the extension extended along cooling medium introducing port direction.

3. heat exchanger as claimed in claim 2, which is characterized in that the rectification part, which has, blocks the multiple heat exchange section At least described cooling medium between the lateral surface of heat exchange segment and the inner surface of the shell in two outsides in section imports The outside occlusion part of a part in the gap of mouth side.

4. heat exchanger according to any one of claims 1 to 3, which is characterized in that the multiple heat exchange segment Each guiding part has the wing of a heat exchange plate bending, the waveform for being formed to have continuous S-shaped section Piece,

Block the frame between the gas introduction port and the gas discharge outlet in one side of the extending direction of the fin The both ends of the surface side of the opening of body, the fin is communicatively configured with the gas introduction port and the gas discharge outlet respectively.

5. heat exchanger as claimed in claim 4, which is characterized in that the seal member has a plurality of seam being formed parallel to Gap, the outside of the opening of the framework, which is fitted to respectively in the gap, supports the multiple heat exchange segment.

6. heat exchanger as claimed in claim 5, which is characterized in that the seal member, which has, supports the multiple heat exchange The flat part of segment and the engaging portion of preset width that is uprightly arranged of outer edge around the flat part.

7. heat exchanger according to any one of claims 1 to 6, which is characterized in that constituting the multiple heat exchange In the framework of each of segment, the opening area of gas introduction port described in the open area ratio of the gas discharge outlet It is small.

8. a kind of exhaust gas heat recovery device, which is characterized in that have:

The main exhaust flow path of the exhaust gas of internal combustion engine is imported,

Gas introduction port is constituted from a part of difference of the main exhaust flow path while being converged with the other parts of the main exhaust flow path The tortuous flow passage of gas discharge outlet is closed and constitutes, and

Make to carry out heat exchange by the exhaust gas and cooling medium of the tortuous flow passage to recycle the heat exchange of exhaust heat in shell Device；

The heat exchanger has:

The multiple heat exchange segments being set side by side in the shell,

With the shell it is fluid tight in conjunction with, in each gap of the heat exchange segment adjacent to each other and the shell The seal member that cooling medium flow path twelve Earthly Branches hold the multiple heat exchange segment is formed between surface and the heat exchange segment,

The cooling medium introducing port and cooling medium outlet that formation is connected on the housing, with the cooling medium flow path, And

It is installed between the cooling medium introducing port and cooling medium outlet, keeps the holding of the multiple heat exchange segment Part, the holder have with block in the multiple heat exchange segment between 2 heat exchange segments adjacent to each other with institute It states the occlusion part of a part in the gap of the opposite side of cooling medium introducing port and will be imported from the cooling medium introducing port The cooling medium be directed to the rectification part of the cooling medium flow path；

Each heat exchange segment for constituting the multiple heat exchange segment has:

The framework that only there is the outside of opening, at least opening seal member to be utilized to seal fluid tightly on one face, And

It is housed in the framework, a plurality of flow path with the waste gas stream for only allowing predetermined direction, while in the upper of a plurality of flow path Swim the guiding part that there is gas to import flow path and gas discharge duct for side and downstream side；

There is the gas introduction port that fluid communication is imported with the gas, the gas introduction port structure in the opening of each framework At the gas introduction port of the tortuous flow passage, while having in the opening of each framework and being connected to the gas discharge duct Gas discharge outlet, which constitutes the gas discharge outlet of the tortuous flow passage.

9. exhaust gas heat recovery device as claimed in claim 8, which is characterized in that there is the rectification part setting to block described The two sides in portion, a pair of of the extension extended along cooling medium introducing port direction.

10. exhaust gas heat recovery device as claimed in claim 9, which is characterized in that the rectification part is the multiple with blocking Between the lateral surface of heat exchange segment and the inner surface of the shell on the outside of two in heat exchange segment, at least described cooling Jie The outside occlusion part of a part in the gap of matter introducing port side.

11. the exhaust gas heat recovery device as described in any one of claim 8 to 10, which is characterized in that the multiple heat is handed over The each guiding part for changing segment has a heat exchange plate bending, is formed to have continuous S-shaped section The fin of waveform,

Block the frame between the gas introduction port and the gas discharge outlet in one side of the extending direction of the fin The both ends surface side of the opening of body, the fin is communicatively configured with the gas introduction port and the gas discharge outlet respectively.

12. exhaust gas heat recovery device as claimed in claim 11, which is characterized in that the seal member, which has, to be formed parallel to A plurality of gap, the outside of the opening of the framework, which is fitted to respectively in the gap, supports the multiple heat exchange segment.

13. exhaust gas heat recovery device as claimed in claim 12, which is characterized in that the seal member has bearing described more The flat part of a heat exchange segment and the engaging portion of preset width that is uprightly arranged of outer edge around the flat part.

14. the exhaust gas heat recovery device as described in any one of claim 8 to 13, which is characterized in that described more constituting In the framework of each of a heat exchange segment, gas introduction port described in the open area ratio of the gas discharge outlet is opened Open area is small.