WO1989006608A1 - Systemes de regulation de conditionnement d'air pour vehicule - Google Patents

Systemes de regulation de conditionnement d'air pour vehicule Download PDF

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Publication number
WO1989006608A1
WO1989006608A1 PCT/SE1989/000014 SE8900014W WO8906608A1 WO 1989006608 A1 WO1989006608 A1 WO 1989006608A1 SE 8900014 W SE8900014 W SE 8900014W WO 8906608 A1 WO8906608 A1 WO 8906608A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
impurity
control device
valve
sensor
Prior art date
Application number
PCT/SE1989/000014
Other languages
English (en)
Inventor
Peder Fast
Original Assignee
Vts Transportation Systems Ab
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 Vts Transportation Systems Ab filed Critical Vts Transportation Systems Ab
Publication of WO1989006608A1 publication Critical patent/WO1989006608A1/fr

Links

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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/008—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models the input being air quality
    • 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
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B60H1/00835—Damper doors, e.g. position control
    • B60H1/00849—Damper doors, e.g. position control for selectively commanding the induction of outside or inside air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/0085—Smell or pollution preventing arrangements

Definitions

  • the present invention relates to an arrangement of the kind set forth in the preamble of claim 1.
  • US 4 478 049 describes an arrangement in which a gas sensor for detecting air im- purity levels is located in the vehicle fresh air intake.
  • a recirculating valve is activated, so as to close off the fresh air intake, and to open an air recirculating path.
  • the recirculation valve is again activated, so as to re-open the air intake and to close the recirculation path.
  • the detection levels can be re-set between two values in dependence on the degree of impurity of the surrounding air.
  • US 4 259 722 describes a similar arrangement.
  • the recirculation of air within the vehicle interior is discontinued in response to signals produced by carbon-dioxide sensors or humidity sensors positioned in the vehicle interior.
  • the concentration or content of air impurities will change constantly during the journey travelled by the vehicle.
  • the object of the invention is to create an interior environment which contains the minimum possible air- -carried contaminants or impurities, irrespective of the .degree of pollution of the air externally of the vehicle. This problem is achieved with an arrangement having the characterizing features set forth in claim 1. Further features and developments of the inventive arrangement are set forth in the remaining claims.
  • the impurities in the air present in the vehicle interior will be decreased not only when the air externally of the vehicle is relatively heavily polluted, but always as soon as the level of im- purities in the ambient air rises, even though the air at that time is only moderately polluted. This enables the level of air pollution in the vehicle interior to be reduced to a minimum.
  • Figure 1 is a block schematic of a first embodiment of the invention
  • Figure 2 is a block schematic of a second embodiment of the invention.
  • the reference 1 identifies the interior of a vehicle, said interior being connected to a fresh air intake 2. via a first air conduit 3 provided with a fan 4 driven by a fan motor 5.
  • a fan 4 driven by a fan motor 5.
  • the speed of the fan motor 5 can be controlled from an instrument panel. although the manner of motor control is irrelevant to the embodiment of Figure 1.
  • the illustrated embodiment includes a second air conduit 6, which although shown in the Figure to be positioned adjacent the conduit 3 may, in practice, be placed in some other suitable location.
  • the air conduit 6 discharges close to the air intake 2 and has at this location an opening which communicates with the first conduit 3.
  • valve 7 need not have the form illustrated schematically in the Figure, but may have any suitable form, for in ⁇ stance may comprise two mutually opposed valves which are controlled simultaneously, the one valve being located in the air intake and the other valve in the opening between the conduits 3 and 6.
  • a first air impurity sensor 9 is positioned in the prox- i ity of the fresh air intake 2 or in the intake itself.
  • a second air impurity sensor 10 is positioned within the vehicle interior 1.
  • the air impurity sensors 9 and 10 are mutually of the same kind and are also mutually matching. In order to compensate for any dependency on temperature which the sensors might have, a respective temperature sensor 11 and 12 may be placed in the proximity of each of the impurity sensors.
  • the impurity sensors 9 and 10 for instance, may be of the kind effective in detecting the carbon dioxide content of the air, although sensors for detecting the presence of other types of gases may also be used. Multiple sensors for detecting different types of impurities, such as other types of gas, including dust and the like, may also be used.
  • the analogue signals produced by the sensors 9 and 10, and also, when installed, the sensors 11 and 12, are fed to a control device 13, which may be of a kind constructed from analogue elements.
  • a control device 13 which may be of a kind constructed from analogue elements.
  • the signals are fed from the sensors 9 and 11 to a first tem ⁇ perature compensation circuit 14 and the signals from the sensors 10 and 12 are sent to a second temperature co - pensating circuit 15.
  • the outputs of the circuits 14 and 15 are each fed to a respective input of a comparator 16, which when the signal from the circuit 14 is higher than the signal from the circuit 15 steers the valve control device 8 in a manner to adjust the valve to its second position, such as to close the fresh air intake 2 and open the recirculation path through the conduits 6 and 3.
  • the signals from the sensors 9 and 10 are fed directly to the inputs of the comparator 16.
  • the comparator output signal can also be fed to a delay circuit 17, which after a predetermined time lapse steers the valve arrangement in a manner to switch the valve 7 back to its first setting, in which the air intake is open.
  • the comparator may be constructed to steer the valve device 8 to its valve re- -setting mode when, subsequent to re-setting the valve 7 to its recirculation mode, the sensor 10 measures an air impurity content of given value which is higher than the air impurity content detected by the sensor 9.
  • control device 13 and its various functions can be replaced with a computer (or as a part program in a computer which is also utilized for other purposes), wherewith all incoming analogue signals are coupled to the control device 13 via analog/digital converters (not shown).
  • Figure 2 illustrates a second embodiment of the inventive arrangement.
  • only one air impurity sensor 20 is provided, this sensor being located adjacent to or in the fresh air intake 2.
  • the control device is preferably a computer which is constructed to calculate continuously the impurity content in the vehicle interior 1 during those periods in which the valve 7 holds the intake open, said calculation being made on the basis of the instantaneous impurity content measured by the sensor 20 at a previous, given point in time.
  • the vehicle interior is preferably provided with a multiple of passenger sensors 22. Mutually different times can be decided for calculating the impurity content of the ve- hide interior, in dependence on the number of people in the vehicle.
  • the illustrated embodiment also includes an instrument panel 23. which can be connected to the control device 21.
  • the driver is able to select the speed of the fan motor 5 of the fan 4, e.g. between four positions, this selection being made through the instrument panel 23.
  • the speed of the fan motor 5 may also be controlled, instead, from the in ⁇ strument panel independently of the control device, in which case signals from the fan motor 5 indicating fan speed are instead fed to the control device 21 (not shown) .
  • the control device 21 can also select the afore ⁇ said given point of time at which the impurity content of the air is calculated in depence on prevailing fan speed.
  • Calculation of the air impurity content of the vehicle interior can be effected by simple computation of the averages of the values detected during said given time period.
  • the scale selected may be different for different makes of vehicles.
  • the control device 21 may also be programmed with mutually different calculating conditions with different scales for each conceivable combination of passenger number and selected fan speed.
  • the quality of the air in the vehicle interior is impaired slowly as the air is recirculated, and naturally it will be necessary to allow fresh air to enter from outside the vehicle after a given length of time has lapsed.
  • the latest calculated value of air quality in the vehicle interior is used as a reference and the control device 21 effects a calculation of the impaired air quality in the vehicle interior along a time scale which is set in de ⁇ pendence of the number of people in the vehicle.
  • control device 21 may also be constructed to store the value detected at a precise moment in time, at regular time intervals, e.g.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

Un agencement permettant de réguler automatiquement le conditionnement d'air d'un véhicule, comprend un ventilateur (4, 5) situé à l'intérieur du véhicule ainsi qu'une vanne de recirculation (7) agencée adjacente à une admission (2) d'air neuf. On peut orienter la vanne entre deux réglages de vanne. Lorsque la vanne est réglée sur une première position, de l'air extérieur pénètre dans le véhicule. Lorsque la vanne est réglée sur le second de ses deux réglages, l'air se trouvant à l'intérieur du véhicule est recirculé. Un capteur (9) d'impuretés est relié à une entrée d'un dispositif de régulation (13), conçu pour comparer le signal de sortie du capteur (9) d'impuretés de l'air, avec une valeur instantanée calculée ou détectée d'impuretés de l'air se trouvant à l'intérieur du véhicule, et pour régler la vanne de recirculation (7) dans son mode de recirculation, lorsque le signal extérieur du capteur (9) d'impuretés de l'air indique une valeur supérieure à la valeur d'impuretés de l'air à l'intérieur du véhicule.
PCT/SE1989/000014 1988-01-22 1989-01-19 Systemes de regulation de conditionnement d'air pour vehicule WO1989006608A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800205-0 1988-01-22
SE8800205A SE460036B (sv) 1988-01-22 1988-01-22 Anordning foer luftkonditioneringsreglering i ett fordon

Publications (1)

Publication Number Publication Date
WO1989006608A1 true WO1989006608A1 (fr) 1989-07-27

Family

ID=20371144

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000014 WO1989006608A1 (fr) 1988-01-22 1989-01-19 Systemes de regulation de conditionnement d'air pour vehicule

Country Status (2)

Country Link
SE (1) SE460036B (fr)
WO (1) WO1989006608A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0501127A2 (fr) * 1991-02-27 1992-09-02 Mercedes-Benz Ag Dispositif de contrôle de la ventilation de l'habitacle en particulier pour les voitures automobiles
FR2691677A1 (fr) * 1992-05-26 1993-12-03 Bosch Gmbh Robert Procédé de commande d'un dispositif de ventilation de l'intérieur d'un véhicule à moteur, en fonction des concentrations en éléments polluants de l'air extérieur et de l'intérieur.
EP0637368A1 (fr) * 1992-10-15 1995-02-08 Johnson Service Company Regulation des taux de renouvelement et de la qualite de l'air interieur
GB2343851A (en) * 1998-11-19 2000-05-24 Connor Edward O Vehicle with air pollution monitoring and control
WO2005014318A1 (fr) * 2003-08-07 2005-02-17 Robert Bosch Gmbh Procede de regulation de la proportion d'air de circulation et/ou d'air frais dans un habitacle
WO2008084432A1 (fr) * 2007-01-10 2008-07-17 Koninklijke Philips Electronics N.V. Système de commande pour commander un système de traitement de l'air
US7997090B2 (en) 2008-01-30 2011-08-16 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Air conditioning system, method of operation thereof, and vehicle using the same
EP3357725A1 (fr) * 2016-09-20 2018-08-08 Miroslav Labas Procédé de surveillance de la qualité de l'air dans des véhicules à moteur et dans l'environnement et dispositif de surveillance
SE1751429A1 (en) * 2017-11-21 2019-05-22 Scania Cv Ab Method and system for regulating the air composition in the interior space of a vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259722A (en) * 1978-10-11 1981-03-31 Nippondenso Co., Ltd. Electric control method and apparatus for automobile air conditioner
EP0042287A1 (fr) * 1980-06-17 1981-12-23 Nippondenso Co., Ltd. Conditionnement d'air pour véhicule automobile avec purification d'air

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4259722A (en) * 1978-10-11 1981-03-31 Nippondenso Co., Ltd. Electric control method and apparatus for automobile air conditioner
EP0042287A1 (fr) * 1980-06-17 1981-12-23 Nippondenso Co., Ltd. Conditionnement d'air pour véhicule automobile avec purification d'air

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0501127A2 (fr) * 1991-02-27 1992-09-02 Mercedes-Benz Ag Dispositif de contrôle de la ventilation de l'habitacle en particulier pour les voitures automobiles
EP0501127A3 (en) * 1991-02-27 1994-07-20 Daimler Benz Ag Ventilation control device of a passenger compartment in particular for motor vehicles
FR2691677A1 (fr) * 1992-05-26 1993-12-03 Bosch Gmbh Robert Procédé de commande d'un dispositif de ventilation de l'intérieur d'un véhicule à moteur, en fonction des concentrations en éléments polluants de l'air extérieur et de l'intérieur.
EP0637368A1 (fr) * 1992-10-15 1995-02-08 Johnson Service Company Regulation des taux de renouvelement et de la qualite de l'air interieur
EP0637368A4 (fr) * 1992-10-15 1996-01-10 Johnson Service Co Regulation des taux de renouvelement et de la qualite de l'air interieur.
GB2343851A (en) * 1998-11-19 2000-05-24 Connor Edward O Vehicle with air pollution monitoring and control
WO2005014318A1 (fr) * 2003-08-07 2005-02-17 Robert Bosch Gmbh Procede de regulation de la proportion d'air de circulation et/ou d'air frais dans un habitacle
WO2008084432A1 (fr) * 2007-01-10 2008-07-17 Koninklijke Philips Electronics N.V. Système de commande pour commander un système de traitement de l'air
US8452489B2 (en) 2007-01-10 2013-05-28 Koninklijke Philips Electronics N.V. Controlling system for controlling an air handling system
US7997090B2 (en) 2008-01-30 2011-08-16 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Air conditioning system, method of operation thereof, and vehicle using the same
EP3357725A1 (fr) * 2016-09-20 2018-08-08 Miroslav Labas Procédé de surveillance de la qualité de l'air dans des véhicules à moteur et dans l'environnement et dispositif de surveillance
SE1751429A1 (en) * 2017-11-21 2019-05-22 Scania Cv Ab Method and system for regulating the air composition in the interior space of a vehicle

Also Published As

Publication number Publication date
SE8800205L (sv) 1989-07-23
SE8800205D0 (sv) 1988-01-22
SE460036B (sv) 1989-09-04

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