WO2016023814A1 - Système de climatisation de véhicule pour la climatisation d'un habitacle de véhicule - Google Patents

Système de climatisation de véhicule pour la climatisation d'un habitacle de véhicule Download PDF

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Publication number
WO2016023814A1
WO2016023814A1 PCT/EP2015/068174 EP2015068174W WO2016023814A1 WO 2016023814 A1 WO2016023814 A1 WO 2016023814A1 EP 2015068174 W EP2015068174 W EP 2015068174W WO 2016023814 A1 WO2016023814 A1 WO 2016023814A1
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WO
WIPO (PCT)
Prior art keywords
channel
air
vehicle
climate control
control system
Prior art date
Application number
PCT/EP2015/068174
Other languages
English (en)
Inventor
Stefan Gartner
Bodo Gesell
Original Assignee
Valeo Klimasysteme Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Klimasysteme Gmbh filed Critical Valeo Klimasysteme Gmbh
Publication of WO2016023814A1 publication Critical patent/WO2016023814A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H1/00064—Air flow details of HVAC devices for sending air streams of different temperatures into the passenger compartment
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/00114—Heating or cooling details
    • B60H2001/00135—Deviding walls for separate air flows
    • 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
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00021—Air flow details of HVAC devices
    • B60H2001/0015—Temperature regulation
    • B60H2001/00164—Temperature regulation with more than one by-pass

Definitions

  • the invention concerns a vehicle climate control system for climate control of a vehicle interior, with an evaporator for providing cold air which can be supplied to the vehicle interior, a heating device for providing warm air which can be supplied to the vehicle interior, an air mixing region for mixing cold air from the evaporator and warm air from the heating device, a defroster channel for air flow to a vehicle window, a ventilation channel for air flow to a vehicle occupant, and a footwell channel for air flow to a vehicle floor region, wherein the defroster channel, the ventilation channel and the footwell channel are each connected to the air mixing region.
  • Modern motor vehicles are today normally equipped with a climate control system for ventilation, climate control and/or dehumidification of a vehicle interior.
  • such a vehicle climate control system comprises an evaporator for providing cold air and a heating device for providing warm air.
  • the cold air, the warm air, and sometimes fresh air from the vehicle environment and/or ambient air from the vehicle interior flow into an air mixing region which prepares mixed air at a predefined temperature and conducts this via several channels and air vents into the vehicle interior in order to temper this as required.
  • the prior art already discloses vehicle climate control systems with so-called zone climate control, in which the temperature of the vehicle interior can be adjusted by "zones" and consequently adapted to the different temperature wishes of the driver and passenger.
  • DE 10 2012 022 214 Al discloses a vehicle climate control system in which a separate cold air channel is provided which can conduct cold air, provided by the evaporator, substantially unmixed to the vehicle interior. Via such a cold air channel, with little structural complexity, cold air can be supplied locally without changing the global temperature setting and hence changing the mixed air temperature in the air mixing region. Thus in low exterior temperatures and strong sunshine, the cold air provided by the evaporator can be blown onto the head and/or chest region of the occupant without having to lower the temperature in the footwell. This functionality of the climate control system consequently leads to increased climatization comfort for the vehicle occupants.
  • DE 10 2011 008 520 Al discloses a vehicle climate control system in which mixed air from the main mixing chamber and/or warm air from the heating device can be supplied to the footwell channel. Starting from an air temperature in the main mixing chamber, the air temperature in the footwell channel can thus be raised very easily and without significant effects on other air vents.
  • a climate control system cannot achieve an operating mode in which the air temperature in the ventilation channel is lower than a global temperature setting of the vehicle climate control system.
  • the object of the invention is to create a vehicle climate control system in which a global temperature setting in the head and/or chest region of a vehicle occupant can be reduced locally very easily, without the vehicle occupant perceiving an unpleasant temperature layering of the air flow or disruptive noises from the vehicle climate control system.
  • this object is achieved by a vehicle climate control system of the type cited initially in which a warm air bypass channel is provided for supplying warm air to the defroster channel and footwell channel.
  • the bypass channel can supply warm air from the heating device to the defroster channel and footwell channel while bypassing the air mixing region.
  • the air temperature in the ventilation channel always substantially corresponds to the air temperature set in the air mixing region, since the ventilation channel is not connected to the warm air bypass channel.
  • the ventilation channel for air flow to the head and/or chest region of the occupants is connected exclusively to the air mixing region, so that no undesirable direct sound bridge occurs between the evaporator and the head region of the vehicle occupant. Furthermore, in the air mixing region an intensive mixing takes place of cold air from the evaporator and warm air from the heating device, so that no undesirable temperature layering occurs at the air vent of the ventilation channel.
  • the warm air bypass channel extends from an air inlet assigned to the heating device, through the air mixing region while at least partly separated therefrom, to a first air outlet assigned to the defroster channel and a second air outlet assigned to the footwell channel.
  • the warm air bypass channel branches, starting from the air inlet, and finally ends in two separate air outlets. In this way, with little structural complexity, both the temperature in the defroster channel and the temperature in the footwell channel can be raised relative to the temperature in the air mixing region.
  • the air inlet of the warm air bypass channel may directly border a downstream side of the heating device.
  • a maximum air temperature is reached with which the air temperature in the defroster and footwell channels can be influenced particularly efficiently.
  • a bypass valve is assigned to the air inlet of the warm air bypass channel to regulate the air flow in the warm air bypass channel. Via the bypass valve, temperature differences between the ventilation channel firstly and the defroster channel secondly can be set very easily.
  • a defroster bypass valve is assigned to the first air outlet of the warm air bypass channel to regulate a warm air flow supplied to the defroster channel, wherein the defroster bypass valve in particular may be integrated in a defroster valve for regulating an air flow supplied to the defroster channel .
  • the warm air bypass channel extends into the defroster channel, or the first air outlet directly borders an inlet opening of the defroster channel. This ensures that the air temperature in the defroster channel can be influenced decisively by the air temperature in the warm air bypass channel.
  • a footwell bypass valve is assigned to the second air outlet to regulate a warm air flow supplied to the footwell channel.
  • This footwell bypass valve may in particular be integrated in a footwell valve for regulating an air flow supplied to the footwell channel.
  • the warm air bypass channel extends into the footwell channel, or the second air outlet directly borders an inlet opening of the footwell channel. This ensures that the air temperature in the footwell channel can be decisively influenced by the air temperature in the warm air bypass channel.
  • the warm air bypass channel expands from the air inlet to the first air outlet in the vehicle transverse direction. This ensures a particularly even mixing of warm air in the vehicle transverse direction, whereby undesirable temperature layering is prevented.
  • the warm air bypass channel is arranged substantially centrally to the evaporator in the vehicle transverse direction. This gives a structurally simple construction of the vehicle climate control system, substantially symmetrical in the vehicle transverse direction, which leads to a desirable identical climatization behavior on the driver's and passenger's sides.
  • the warm air bypass channel can be divided in the vehicle transverse direction, wherein a first bypass part channel is assigned to the driver's side and a second bypass part channel to the passenger's side.
  • a so-called "zone control" of the vehicle climate control system can be achieved very easily .
  • the heating device of the vehicle climate control system is connected downstream of the evaporator. This allows firstly an advantageous dehumidification of the mixed air supplied to the vehicle interior, and secondly a reheating of the cold air supplied by the evaporator.
  • sensors are provided to measure the temperature of the air supplied to the vehicle interior, and a control device to regulate the measured air temperature to an adjustable nominal temperature of the vehicle interior, wherein the sensors are arranged in the defroster channel and/or in the footwell channel.
  • no sensors are provided in the ventilation channel for measuring the temperature of the air supplied to the vehicle interior.
  • at least one first main valve is provided to regulate the cold air supplied to the air mixing region from the evaporator, and at least one second main valve to regulate the warm air supplied to the air mixing region from the heating device, wherein the control device is coupled particularly preferably exclusively to the main valves of the vehicle climate control system.
  • the control device for determining the air supplied to the vehicle interior measures the air temperature in the defroster channel and/or in the footwell channel, which may have a higher temperature than the warm air bypass channel, and under certain circumstances lowers the air temperature in the air mixing region via the main valves of the vehicle climate control system, in this way very easily a desired temperature reduction in the ventilation channel can be achieved "indirectly".
  • the vehicle climate control system functionally corresponds to a climate control system with a cold air bypass for the ventilation channel, wherein however no noise or temperature layering problems occur.
  • Figure 1 a diagrammatic longitudinal section of a vehicle climate control system according to the invention in a state fitted in the vehicle
  • Figure 2 a diagrammatic section II-II through the vehicle climate control system according to figure 1
  • Figure 3 a diagrammatic perspective extract from the vehicle climate control system according to figure 1.
  • Figure 1 shows a vehicle climate control system 10 for climate control of a vehicle interior, with an evaporator 12 for providing cold air which can be supplied to the vehicle interior, a heating device 14 for providing warm air which can be supplied to the vehicle interior, and an air mixing region 16 for mixing cold air from the evaporator 12 and warm air from the heating device 14.
  • the vehicle climate control system 10 comprises a defroster channel 18 for air flow to a vehicle window, a ventilation channel 20 for air flow to a vehicle occupant 26, and a footwell channel 22 for air flow to a vehicle floor region, wherein the defroster channel 18, the ventilation channel 20 and the footwell channel 22 are each connected to the air mixing region 16, i.e. they each open into the air mixing region 16.
  • an air vent of the defroster channel 18 is adjacent to a front window 24 of the vehicle.
  • An air vent of the ventilation channel 20 is arranged in a dashboard of the vehicle approximately at chest height of the vehicle occupant 26 and can direct an air flow onto the head and/or chest region of the vehicle occupant 26, while an air vent of the footwell channel 22 is arranged close to the floor in a footwell 28 of the vehicle and can direct an air flow onto the feet of the vehicle occupant 26.
  • a common warm air bypass channel 30 is provided to supply warm air to the defroster channel 18 and the footwell channel 22.
  • the warm air bypass channel 30 supplies warm air from the heating device 14 to the defroster channel 18 and footwell channel 22, bypassing the air mixing region 16, whereas the ventilation channel 20 is not connected to the warm air bypass channel 30 so that the air temperature in the ventilation channel 20 always substantially corresponds to the air temperature set in the air mixing region 16.
  • the heating device 14 is connected downstream of the evaporator 12, and in the present exemplary embodiment comprises both a heating body 34 and a so-called PTC heater 36.
  • the warm air bypass channel 30 extends from an air inlet 38 assigned to the heating device 14, through the air mixing region 16, to a first air outlet 40 assigned to the defroster channel 18 and a second air outlet 42 assigned to the footwell channel 22.
  • the warm air bypass channel 30 branches in the air mixing region 16 and ends in two separate air outlets 40, 42, wherein the warm air bypass channel 30 is separated air-tightly from the air mixing region 16 between the air inlet 38 and air outlets 40, 42, so that no air can be exchanged between the air mixing region 16 and the warm air bypass channel 30.
  • the air inlet 38 of the warm air bypass channel 30 directly borders a downstream side of the heating device 14, so that as high an air temperature as possible is set in the warm air bypass channel 30.
  • a bypass valve 44 is assigned to the air inlet 38 to regulate the air flow in the warm air bypass channel 30. Via this bypass valve 44, a desired temperature difference can be set very easily between the air in the ventilation channel 20 firstly and the air in the defroster channel 18 and footwell channel 22 secondly, wherein when the bypass valve 44 is in a closed position, there is no temperature difference and when the bypass valve 44 is in an open position, there is a maximum temperature difference.
  • a defroster bypass valve 46 is assigned to the first air outlet 40 to regulate a warm air flow supplied to the defroster channel 18, and a footwell bypass valve 48 is assigned to the second air outlet 42 to regulate a warm air flow supplied to the footwell channel 22.
  • the defroster bypass valve 46 is integrated in a defroster valve to regulate an air flow supplied to the defroster channel 18.
  • the footwell bypass valve 48 is integrated in a footwell valve to regulate an air flow supplied to the footwell channel 22.
  • a ventilation valve 50 to regulate the air flow supplied to the ventilation channel 20 however only controls the air flow between the air mixing region 16 and the ventilation channel 20, since the warm air bypass channel 30 is not connected to the ventilation channel 20.
  • the first air outlet 40 of the warm air bypass channel 30 directly borders an inlet opening 52 of the defroster channel 18, and the second air outlet 42 of the warm air bypass channel 30 directly borders an inlet opening 54 of the footwell channel 22, whereby the air temperature in the air mixing region 16 is scarcely influenced by the air flow in the warm air bypass channel 30.
  • the warm air bypass channel 30 extends partly into the defroster channel 18 and/or the footwell channel 22.
  • FIG. 2 shows a diagrammatic section II-II through the vehicle climate control system 10 according to figure 1. It is evident that in the fitted state of the vehicle climate control system 10, the warm air bypass channel 30 is arranged substantially centrally to the evaporator 12 in the vehicle transverse direction 56. Thus in the vehicle transverse direction 56, the vehicle climate control system 10 is substantially symmetrical in structure, which - in particular in the case of a system of zone control of the climate control system with identical control settings - leads to a desirable identical climatization behavior on the driver's side and passenger's side.
  • the warm air bypass channel 30 is divided approximately centrally in the vehicle transverse direction 56, wherein a first bypass part channel 58 is assigned to the driver's side and a second bypass part channel 60 to the passenger's side.
  • a corresponding partition 62 of the warm air bypass channel 30 is indicated in dotted lines in figure 2. Consequently, in this case the air mixing region 16 and the bypass valve 44, defroster bypass valve 46 and/or footwell bypass valve 48 would also be designed divided, in order to be able to achieve a substantially independent zone climatization on the driver's side and passenger's side.
  • Figure 3 shows a diagrammatic perspective view of the vehicle climate control system 10 in the region of the warm air bypass channel 30 to illustrate the physical arrangement and geometric configuration of the warm air bypass channel 30 in the air mixing region 16.
  • the warm air bypass channel 30 expands from the air inlet 38 to the first air outlet 40 in the vehicle transverse direction 56. Since the air vent of the defroster channel 18 at the front screen 24 normally extends over almost the entire vehicle width, this expansion of the warm air bypass channel 30 ensures a particularly even mixing of warm air in the vehicle transverse direction 56.
  • the air from the footwell channel 22 does not normally flow out over the entire vehicle width, so an expansion of the warm air bypass channel 30 towards the second air outlet 42 is not absolutely essential but evidently also conceivable and can be achieved without difficulty .
  • a global temperature setting of the vehicle climate control system 10 can very easily be changed, in particular reduced, locally.
  • the temperature at the air vent of the ventilation channel 20 can be reduced locally, in order for example on cold winter days to compensate for any strong sunshine in the head and chest region of the vehicle occupant 26, while a higher air temperature perceived as pleasant is provided at the air vents of the defroster channel 18 and footwell channel 22.
  • sensors 64 are provided to measure the temperature of the air supplied to the vehicle interior, and a control device 66 to regulate the measured air temperature to an adjustable nominal temperature of the vehicle interior, wherein the sensors 64 are arranged in the defroster channel 18 and in the footwell channel 22. In the ventilation channel 20 however, no such sensors 64 are present.
  • a first main valve 68 is provided to regulate the cold air supplied to the air mixing region 16 from the evaporator 12, and a second main valve 70 to regulate the warm air supplied to the air mixing region 16 from the heating device 14, wherein the control device 66 is coupled exclusively to the main valves 68, 70 of the vehicle climate control system 10.
  • the control device 66 would then be coupled exclusively to this actuator of the vehicle climate control system 10.
  • a desirable local temperature reduction in the head and chest region of a vehicle occupant 26 is now achieved not by means of a direct cold air supply via a cold air bypass channel, but indirectly via a temperature reduction in the air mixing region 16.
  • warm air from the warm air bypass channel 30 is mixed into the cool air from the air mixing region 16 so that, overall, the nominal temperature according to the global temperature setting is reached.
  • the temperature of the air supplied to the vehicle interior is measured in the defroster channel 18 and/or in the footwell channel 22 and compared with the nominal temperature of the vehicle interior, which can be set by the vehicle occupant 26, starting from the global temperature setting of the vehicle occupant 26, the warm air bypass channel 30 consequently undergoes no local temperature increase in the defroster channel 18 and footwell channel 22 but finally leads to a desired local temperature reduction in the ventilation channel 20.
  • This structure of the vehicle climate control system 10 offers the advantage that there is no direct cold air flow connection between the evaporator 12 and the air vents of the ventilation channel 20. Because of its short length and largely rectilinear alignment, such a cold air channel would be responsible for a temperature layering perceived as unpleasant at the air vents of the ventilation channel 20, and for noise from the climate control system which could under certain circumstances be perceived as disruptive by the vehicle occupant 26.

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un système de climatisation de véhicule (10) pour la climatisation d'un habitacle de véhicule comprenant un évaporateur (12) permettant la fourniture d'air froid pouvant être fourni à l'habitacle de véhicule, un dispositif de chauffage (14) permettant la fourniture d'air chaud pouvant être fourni à l'habitacle du véhicule, une région de mélange d'air (16) permettant de mélanger l'air froid provenant de l'évaporateur (12) et l'air chaud provenant du dispositif de chauffage (14), un canal de dégivreur (18) permettant l'écoulement d'air vers une vitre du véhicule, un canal de ventilation (20) permettant l'écoulement d'air vers un occupant du véhicule (26) et un canal d'espace pour les pieds (22) permettant l'écoulement d'air vers une région de plancher du véhicule, le canal de dégivreur (18), le canal de ventilation (20) et le canal d'espace pour les pieds étant tous deux raccordés à la région de mélange d'air (16), caractérisé en ce qu'un canal de dérivation d'air chaud (30) est fourni pour alimenter le canal de dégivreur (18) et le canal d'espace pour les pieds (22) en air chaud.
PCT/EP2015/068174 2014-08-12 2015-08-06 Système de climatisation de véhicule pour la climatisation d'un habitacle de véhicule WO2016023814A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014111496.5A DE102014111496A1 (de) 2014-08-12 2014-08-12 Fahrzeugklimaanlage zur Klimatisierung eines Fahrzeuginnenraums
DE102014111496.5 2014-08-12

Publications (1)

Publication Number Publication Date
WO2016023814A1 true WO2016023814A1 (fr) 2016-02-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/068174 WO2016023814A1 (fr) 2014-08-12 2015-08-06 Système de climatisation de véhicule pour la climatisation d'un habitacle de véhicule

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Country Link
DE (1) DE102014111496A1 (fr)
WO (1) WO2016023814A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001062530A1 (fr) * 2000-02-22 2001-08-30 Valeo Climatisation Dispositif de conditionnement d'air pour vehicule
WO2002032704A1 (fr) * 2000-10-20 2002-04-25 Valeo Klimasysteme Gmbh Boîtier de guidage d"air
EP1445133A2 (fr) * 2003-02-10 2004-08-11 Zexel Valeo Climate Control Corporation Dispositif de climatisation d'un véhicule automobile
EP1616734A1 (fr) * 2004-07-16 2006-01-18 Valeo Systèmes Thermiques Système de contrôle de la température de ventilation d'un appareil de chauffage et de climatisation pour véhicules automobiles
JP2009143330A (ja) * 2007-12-12 2009-07-02 Calsonic Kansei Corp 自動車用空気調和装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011008520B4 (de) 2011-01-13 2023-03-02 Mahle International Gmbh Klimaanlage zur Steuerung eines Luftstroms in einer Klimaanlage eines Fahrzeugs
DE102012022214A1 (de) 2012-11-13 2014-05-15 Valeo Klimasysteme Gmbh Fahrzeugklimaanlage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001062530A1 (fr) * 2000-02-22 2001-08-30 Valeo Climatisation Dispositif de conditionnement d'air pour vehicule
WO2002032704A1 (fr) * 2000-10-20 2002-04-25 Valeo Klimasysteme Gmbh Boîtier de guidage d"air
EP1445133A2 (fr) * 2003-02-10 2004-08-11 Zexel Valeo Climate Control Corporation Dispositif de climatisation d'un véhicule automobile
EP1616734A1 (fr) * 2004-07-16 2006-01-18 Valeo Systèmes Thermiques Système de contrôle de la température de ventilation d'un appareil de chauffage et de climatisation pour véhicules automobiles
JP2009143330A (ja) * 2007-12-12 2009-07-02 Calsonic Kansei Corp 自動車用空気調和装置

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