WO2019058810A1 - Système d'échange de chaleur - Google Patents

Système d'échange de chaleur Download PDF

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Publication number
WO2019058810A1
WO2019058810A1 PCT/JP2018/030090 JP2018030090W WO2019058810A1 WO 2019058810 A1 WO2019058810 A1 WO 2019058810A1 JP 2018030090 W JP2018030090 W JP 2018030090W WO 2019058810 A1 WO2019058810 A1 WO 2019058810A1
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WO
WIPO (PCT)
Prior art keywords
air
heat exchanger
vehicle
exchange system
heat exchange
Prior art date
Application number
PCT/JP2018/030090
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English (en)
Japanese (ja)
Inventor
佐藤　剛
Original Assignee
株式会社デンソー
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Filing date
Publication date
Application filed by 株式会社デンソー filed Critical 株式会社デンソー
Publication of WO2019058810A1 publication Critical patent/WO2019058810A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds

Definitions

  • the present disclosure relates to a heat exchange system mounted on a vehicle.
  • a heat exchange system is mounted in an engine room provided on the front side of the vehicle.
  • the heat exchange system is for exchanging heat between air and a heat medium (for example, a refrigerant for air conditioning).
  • the heat exchange system is configured, for example, as a modularized combination of a single or a plurality of heat exchangers and a fan or the like for sending out air.
  • the fan of the heat exchange system described in Patent Document 1 below has a first operation mode in which outside air is discharged from the outside air opening in front of the vehicle toward the rear engine side, and from the rear engine side to outside air opening in the front It is possible to carry out a second operation mode of delivering air.
  • the fans of the heat exchange system are generally designed such that the flow rate of the delivered air is optimal when rotating in a direction to deliver the air from the front side to the aft side of the vehicle. For this reason, when the fan rotates in such a direction as to send out air from the rear side to the front side as in the second operation mode described above, the flow rate of air passing through the heat exchanger becomes small. As a result, heat recovery from air in the heat exchanger is not efficiently performed, and the load on the compressor for circulating the heat medium may be increased.
  • the present disclosure is a heat exchange system that can prevent the flow rate of air passing through the heat exchanger from being reduced when the fan operates to deliver the air from the rear side to the front side of the vehicle. , Aims to provide.
  • a heat exchange system is a heat exchange system mounted on a vehicle, comprising: a heat exchanger that performs heat exchange between air and a heat medium; and a fan that sends out air so as to pass through the heat exchanger. And.
  • the fan is capable of performing both of a forward rotation operation for delivering air toward the rear side of the vehicle and a reverse rotation operation for delivering air toward the front side of the vehicle.
  • the heat exchange system further includes a suction unit for drawing the air having passed through the heat exchanger such that the flow rate of air passing through the heat exchanger is increased when the fan performs the reverse rotation operation.
  • heat that can prevent the flow rate of air passing through the heat exchanger from being reduced when the fan operates to deliver air from the rear side to the front side of the vehicle A switching system is provided.
  • FIG. 1 is a view schematically showing the heat exchange system according to the first embodiment mounted on a vehicle.
  • FIG. 2 is a figure which shows typically the state by which the heat exchange system which concerns on 1st Embodiment is mounted in a vehicle.
  • FIG. 3 is a flow chart showing the flow of processing performed by the control device of the heat exchange system.
  • FIG. 4 is a figure which shows typically the state by which the heat exchange system which concerns on 2nd Embodiment is mounted in the vehicle.
  • FIG. 5 is a figure which shows typically the state by which the heat exchange system which concerns on 3rd Embodiment is mounted in the vehicle.
  • FIG. 6 is a view schematically showing the heat exchange system according to the fourth embodiment mounted on a vehicle.
  • the heat exchange system 10 includes a heat exchanger 100, a radiator 200, a fan 300, a suction pipe 410, a shutter device 600, and a control device 700, all of which are configured as one module. It has become The control device 700 may be disposed at a position apart from the module.
  • the heat exchanger 100 is a heat exchanger for performing heat exchange between the air flowing outside and the air conditioning refrigerant (heat medium) flowing inside.
  • the heat exchanger 100 is part of an air conditioner (the whole is not shown) provided in the vehicle VC.
  • the air conditioner is configured as a heat pump system.
  • the heat exchanger 100 When cooling the passenger compartment is performed, the heat exchanger 100 functions as a condenser for condensing the refrigerant.
  • the heat exchanger 100 functions as an evaporator for evaporating the refrigerant.
  • the heat exchange system 10 functions as an "outdoor unit" of the heat pump system.
  • the heat exchanger 100 has a configuration in which a plurality of tubes (not shown) through which the refrigerant passes are vertically stacked with fins (not shown) interposed therebetween.
  • the direction in which the air passes between the tubes is along the front-rear direction of the vehicle VC.
  • the heat exchanger 100 When the heat exchanger 100 functions as a condenser, the refrigerant flowing through each tube is cooled and condensed by heat exchange with air, and changes from the gas phase to the liquid phase. Thereby, heat is released from the refrigerant to the air.
  • the heat exchanger 100 functions as an evaporator
  • the refrigerant flowing through each of the tubes is heated by heat exchange with air, and is evaporated to change from the liquid phase to the gas phase. Thereby, heat is recovered from the air to the refrigerant.
  • the radiator 200 is a heat exchanger for cooling the cooling water circulating through the engine EG and the like by heat exchange with air. Radiator 200 is disposed at a position on the rear side of vehicle VC relative to heat exchanger 100.
  • the radiator 200 may be configured as a heat exchanger for cooling cooling water supplied to auxiliary devices such as an inverter (not shown). Further, the radiator 200 is configured as a combination of a heat exchanger for cooling the cooling water circulating through the engine EG etc. and a heat exchanger for cooling the cooling water supplied to the auxiliary machinery etc. It may be an aspect as it is.
  • the fan 300 is a blower that sends out air so as to pass through each of the heat exchanger 100 and the radiator 200.
  • Fan 300 is provided at a position on the rear side of vehicle VC relative to radiator 200.
  • the fan 300 can perform both of a forward rotation operation of delivering air toward the rear side engine EG and a reverse rotation operation of delivering air toward the front side heat exchanger 100 etc. There is. Note that FIG. 1 shows a state in which the fan 300 is rotating in the forward direction, and FIG. 2 shows a state in which the fan 300 is rotating in the reverse direction.
  • the operation of the fan 300 is controlled by a control device 700 described later.
  • the suction pipe 410 is a pipe for sucking the air having passed through the heat exchanger 100 into the intake flow path 400 when the fan 300 performs the above-described reverse rotation operation.
  • the intake flow passage 400 is a flow passage for supplying combustion air to the engine EG, and is provided at a position above the heat exchange system 10.
  • an air filter 430 is provided in the middle of the intake passage 400 for removing foreign matter from the air.
  • FIG. 1 a portion on the upstream side of the air filter 430 in the intake passage 400 is depicted as a cross-sectional view, and the internal structure of the intake passage 400 is shown.
  • the operation of the engine EG generates an air flow inside the intake flow passage 400.
  • An opening 401 formed at the upstream end of the intake flow passage 400 is disposed at a position further forward than a shutter device 600 described later. Therefore, regardless of whether the shutter device 600 is open or closed, the air flowing into the vehicle VC from the opening OP formed in the front grille is sucked from the opening 401 and supplied to the engine EG.
  • the suction pipe 410 connects a portion of the intake passage 400 on the upstream side (front side) of the air filter 430 and a space on the front side of the heat exchanger 100 and on the rear side of the shutter device 600. It is provided as.
  • a control valve 420 is provided at a position in the vicinity of a connection portion of the suction pipe 410 with the intake flow passage 400.
  • the adjustment valve 420 is a valve for adjusting the flow rate of air flowing from the space on the front side of the heat exchanger 100 through the suction pipe 410 and into the intake flow passage 400.
  • the adjusting valve 420 has a valve body 421 and a rotating shaft 422. The valve body portion 421 is rotated about the rotation shaft 422 by an actuator (not shown), whereby the flow rate of air flowing into the intake flow passage 400 through the suction pipe 410 is adjusted.
  • the operation of the regulating valve 420 is controlled by the controller 700.
  • Shutter device 600 is a path through which air flows from the outside of vehicle VC toward heat exchanger 100, specifically, a path through which air passing through opening OP formed in the front grill reaches heat exchanger 100, It is an apparatus which switches opening and closing of.
  • the shutter device 600 in the present embodiment is provided at a position on the front side of the heat exchanger 100.
  • the shutter device 600 has a plurality of blades 610 which are plate-like members, and these are aligned along the vertical direction. Each blade 610 can be rotated about a rotation axis along the left-right direction (in FIG. 1, the depth direction in the drawing) by a driving force from an actuator (not shown). As a result, it is possible to switch between the state in which the shutter device 600 is opened as shown in FIG. 1 and the state in which the shutter device 600 is closed as shown in FIG. The operation of the shutter device 600 is controlled by the controller 700.
  • Control device 700 is a device for controlling the overall operation of heat exchange system 10.
  • the control device 700 is configured as a computer system having a CPU, a ROM, a RAM, and the like. As described above, the control device 700 controls the operation of each of the fan 300, the adjustment valve 420, and the shutter device 600.
  • Control device 700 controls the operation of each part of heat exchange system 10 based on a control signal transmitted from an air conditioning ECU (not shown) that controls the air conditioning device.
  • the control device 700 may be configured as a part of the air conditioning ECU.
  • An under duct 500 is provided at a position below the heat exchanger 100 in the interior of the vehicle VC.
  • the underduct 500 is provided as a flow path connecting the space in which the heat exchanger 100 is disposed and the space on the rear side of the engine EG.
  • Under duct 500 is arranged along the upper surface of under panel UP of vehicle VC.
  • An opening 510 is formed at the front end of the underduct 500, and an opening 520 is formed at the rear end.
  • FIG. 1 shows a state in which the heat exchanger 100 functions as a condenser.
  • the shutter device 600 is in the open state, and the fan 300 performs the forward rotation operation.
  • the air which flowed in from opening OP is supplied to heat exchanger 100 and radiator 200 from the front side.
  • Such an air flow is shown by a plurality of arrows in FIG.
  • the fan 300 is designed so that the flow rate of the delivered air is optimal when rotating in a direction to deliver the air from the front side to the rear side of the vehicle, that is, when performing a forward rotation operation There is. For this reason, in the state shown in FIG. 1, a sufficient flow of air is supplied to each of the heat exchanger 100 and the radiator 200.
  • the opening degree of the adjustment valve 420 is set to 0, and the flow rate of air flowing from the suction pipe 410 into the intake flow path 400 is set to 0. .
  • FIG. 2 shows a state in which the heat exchanger 100 functions as an evaporator.
  • the shutter device 600 is in the closed state, and the fan 300 performs the reverse rotation operation. For this reason, the air flowing toward the front is supplied to the heat exchanger 100 and the radiator 200 from the periphery of the rear engine EG.
  • the underduct 500 functions to guide the air that has passed through the heat exchanger 100 to the engine EG side when the fan 300 performs the reverse rotation operation.
  • the adjusting valve 420 is opened to allow air to flow from the suction pipe 410 into the intake flow path 400.
  • part of the air that has passed through the heat exchanger 100 and flowed into the space on the rear side of the shutter device 600 is drawn into the inside of the suction pipe 410.
  • the air is supplied to the engine EG through the suction pipe 410 and the intake passage 400, respectively.
  • the flow of air as described above is indicated by a plurality of arrows.
  • the heat exchanger 100 is passed so that the flow rate of air passing through the heat exchanger 100 is increased. Air is drawn by the suction line 410. As a result, the flow rate of air passing through the heat exchanger 100 is prevented from decreasing.
  • the suction pipe 410 is connected to an intake flow passage 400 for supplying air to the engine EG of the vehicle VC, and is configured to suction the air having passed through the heat exchanger 100.
  • a suction pipe 410 corresponds to the “suction unit” in the present embodiment.
  • the flow rate of the air drawn by the suction pipe 410 is adjusted by the opening degree of the adjusting valve 420.
  • the air flowing into the intake flow passage 400 through the suction pipe 410 is air after passing through the heat exchanger 100 which is an evaporator, so the temperature is relatively low. For this reason, since the air which is low temperature and high in density is supplied to the engine EG, the output performance of the engine EG is improved.
  • control device 700 adjust the opening degree of the adjustment valve 420 so that the temperature of the air supplied to the engine EG does not fall below the predetermined lower limit value.
  • a flow of processing executed by the control device 700 will be described with reference to FIG.
  • the series of processes shown in FIG. 3 are repeatedly executed by the control device 700 each time a predetermined control cycle elapses while the air conditioner is in operation.
  • step S01 it is determined whether or not cooling of the vehicle compartment is being performed by the air conditioner. If cooling is being performed, the process proceeds to step S02.
  • step S02 processing for opening the shutter device 600 as shown in FIG. 1 is performed.
  • step S03 following step S02, a process of causing fan 300 to perform a forward rotation operation is performed.
  • step S04 following step S03, the opening degree of the adjustment valve 420 is set to 0, and the flow rate of air flowing into the intake passage 400 through the suction pipe 410 is set to 0.
  • the processes from step S02 to step S04 may be performed in an order different from that described above.
  • step S05 the shutter device 600 is closed as shown in FIG.
  • step S06 processing is performed to cause the fan 300 to perform the reverse rotation operation.
  • step S07 the control valve 420 is opened, and the flow rate of air flowing into the intake passage 400 through the suction pipe 410 is adjusted by the opening degree of the control valve 420.
  • the process is performed such that the temperature of the air supplied to the engine EG does not fall below a predetermined lower limit.
  • the processes from step S05 to step S07 may be performed in an order different from that described above.
  • FIG. 4 is a diagram schematically depicting the front side portion of the vehicle VC in top view.
  • the fan 300 performs reverse rotation operation, and the shutter device 600 shown by a dotted line is in a closed state.
  • a pair of front wheels WH provided on the vehicle VC is depicted.
  • Each front wheel WH is housed inside the tire house TH.
  • a flow passage FP is formed inside the bumper BP.
  • the flow path FP is a flow path formed to guide a part of the air flowing in from the opening OP to the tire house TH.
  • the flow path FP is formed to be connected to each of the left and right tire houses TH. While the vehicle VC is traveling, air flows from the opening OP side toward the tire house TH in each of the flow paths FP. Such air flow is generated by the air flow around the vehicle VC, that is, the vehicle speed wind.
  • the heat exchange system 10 includes a suction pipe 450 instead of the suction pipe 410.
  • the suction pipe 450 is a pipe provided so as to connect the space between the heat exchanger 100 and the shutter device 600 and the flow path FP.
  • One suction pipe 450 is provided on each of the left and right sides so as to correspond to each suction pipe 450.
  • the suction pipe 450 has a shape in which a part thereof is curved so as to be closer to the rear side of the vehicle VC as it approaches a connection portion with the flow path FP.
  • the heat exchanger 100 when the fan 300 performs the reverse rotation operation, the air passing through the heat exchanger 100 is drawn by the suction pipe 450, and as a result, the heat exchanger 100 is The flow rate of air passing through increases.
  • the suction pipe 450 is configured to suck the air having passed through the heat exchanger 100 and discharge the air toward the tire house TH by utilizing the flow of air around the vehicle VC.
  • Such a suction pipe 450 corresponds to the “suction unit” in the present embodiment. Also in such an aspect, it is possible to prevent the flow rate of the air passing through the heat exchanger 100 from being reduced, as in the first embodiment.
  • FIG. 5 is a diagram schematically depicting the front side portion of the vehicle VC in top view.
  • the fan 300 performs reverse rotation operation, and the shutter device 600 shown by a dotted line is in a closed state.
  • the heat exchanger 100 when the fan 300 performs the reverse rotation operation, the air that has passed through the heat exchanger 100 is drawn by the suction pipe 460, and as a result, the heat exchanger 100 is The flow rate of air passing through increases.
  • the suction pipe 460 is configured to suck the air having passed through the heat exchanger 100 using the flow of air around the vehicle VC and discharge the air from the side surface of the vehicle VC to the outside.
  • a suction pipe 460 corresponds to the “suction unit” in the present embodiment. Also in such an aspect, it is possible to prevent the flow rate of the air passing through the heat exchanger 100 from being reduced, as in the first embodiment.
  • FIG. 6 is a view schematically depicting the front side portion of the vehicle VC according to the present embodiment in a side view similar to FIG. In the figure, the fan 300 performs reverse rotation operation, and the shutter device 600 is in a closed state.
  • the suction pipe 410 and the underduct 500 are not provided in the vehicle VC.
  • the under panel UP of the vehicle VC is formed with an opening 470 that leads to the outside.
  • the opening 470 is formed at a position directly below the space between the heat exchanger 100 and the shutter device 600.
  • FIG. 6 a portion on the front side of the opening 470 of the under panel UP is shown as the under panel UP1, and a portion on the rear side of the opening 470 of the under panel UP is shown as the under panel UP2. .
  • the height of the end on the opening 470 side of the under panel UP1 is lower than the height of the end on the opening 470 side of the under panel UP2. With this configuration, the traveling wind accompanying the traveling of the vehicle VC is prevented from flowing from the outside through the opening 470.
  • a guide wall WL1 is provided at a position near the opening 470 in the upper surface (inner surface) of the under panel UP1.
  • the guide wall WL1 is a wall inclined so as to be higher toward the rear side.
  • the fan 300 when the fan 300 performs the reverse rotation operation, the air having passed through the heat exchanger 100 is drawn to the opening 470, and as a result, the heat exchanger 100 The flow rate of air passing through increases.
  • the opening 470 is configured to draw air that has passed through the heat exchanger 100 using the flow of air around the vehicle VC and discharge the air from the bottom of the vehicle VC to the outside.
  • Such an opening 470 corresponds to the “suction unit” in the present embodiment. Also in such an aspect, it is possible to prevent the flow rate of the air passing through the heat exchanger 100 from being reduced, as in the first embodiment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'objet de la présente invention est de fournir un système d'échange de chaleur qui permet d'empêcher une diminution du débit d'air qui passe par un échangeur de chaleur lorsqu'un ventilateur fonctionne de telle sorte que de l'air soit soufflé depuis le côté arrière d'un véhicule vers le côté avant. Un système d'échange de chaleur (10) est installé dans un véhicule (VC), et comprend : un échangeur de chaleur (100) pour échanger de la chaleur entre l'air et un milieu de chauffage; et un ventilateur (300) pour souffler l'air de façon à ce qu'il passe par l'échangeur de chaleur. Le ventilateur peut effectuer à la fois une opération de rotation vers l'avant où de l'air est soufflé vers le côté arrière du véhicule et une opération de rotation inverse où de l'air est soufflé vers le côté avant du véhicule. Le système d'échange de chaleur est en outre pourvu d'une partie aspiration (410, 450, 460, 470) pour aspirer l'air qui est passé par l'échangeur de chaleur de façon à augmenter le débit d'air passant par l'échangeur de chaleur lorsque le ventilateur effectue l'opération de rotation inverse.
PCT/JP2018/030090 2017-09-19 2018-08-10 Système d'échange de chaleur WO2019058810A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017178923A JP6834874B2 (ja) 2017-09-19 2017-09-19 熱交換システム
JP2017-178923 2017-09-19

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WO2019058810A1 true WO2019058810A1 (fr) 2019-03-28

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7316509B2 (ja) * 2019-07-25 2023-07-28 マツダ株式会社 エンジンの吸気装置
JP7435137B2 (ja) 2020-03-26 2024-02-21 日産自動車株式会社 車両における吸気及び雨雪排出構造
JP2022047416A (ja) * 2020-09-11 2022-03-24 株式会社デンソー 車両

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169986A (ja) * 1991-12-24 1993-07-09 Nissan Motor Co Ltd エンジンルーム構造
US6390217B1 (en) * 2001-04-02 2002-05-21 Delphi Technologies, Inc. Vehicle front end air control
JP2016097802A (ja) * 2014-11-21 2016-05-30 株式会社デンソー エンジンルーム通風構造
WO2016092795A1 (fr) * 2014-12-09 2016-06-16 株式会社デンソー Dispositif de refroidissement et module de refroidissement
WO2017077811A1 (fr) * 2015-11-03 2017-05-11 株式会社デンソー Système de commande de courant d'air

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015128923A (ja) * 2014-01-06 2015-07-16 本田技研工業株式会社 車両用冷却装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05169986A (ja) * 1991-12-24 1993-07-09 Nissan Motor Co Ltd エンジンルーム構造
US6390217B1 (en) * 2001-04-02 2002-05-21 Delphi Technologies, Inc. Vehicle front end air control
JP2016097802A (ja) * 2014-11-21 2016-05-30 株式会社デンソー エンジンルーム通風構造
WO2016092795A1 (fr) * 2014-12-09 2016-06-16 株式会社デンソー Dispositif de refroidissement et module de refroidissement
WO2017077811A1 (fr) * 2015-11-03 2017-05-11 株式会社デンソー Système de commande de courant d'air

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