EP0427585B1 - Steuervorrichtung und Arbeitszyklus für die Durchflussregeleinrichtung der Lüftung eines Raumes mit kontrollierter Atmosphäre - Google Patents

Steuervorrichtung und Arbeitszyklus für die Durchflussregeleinrichtung der Lüftung eines Raumes mit kontrollierter Atmosphäre Download PDF

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Publication number
EP0427585B1
EP0427585B1 EP90402938A EP90402938A EP0427585B1 EP 0427585 B1 EP0427585 B1 EP 0427585B1 EP 90402938 A EP90402938 A EP 90402938A EP 90402938 A EP90402938 A EP 90402938A EP 0427585 B1 EP0427585 B1 EP 0427585B1
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EP
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Prior art keywords
pressure
capsule
period
capsules
divider
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EP90402938A
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English (en)
French (fr)
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EP0427585A1 (de
Inventor
Pierre Jardinier
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D'etude Et De Recherche En Ventilation Et Aeraulique Serva Ste
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D'etude Et De Recherche En Ventilation Et Aeraulique Serva Ste
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Priority to AT90402938T priority Critical patent/ATE86378T1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity

Definitions

  • the present invention relates to a device for adjusting the ventilation rate of a room with a controlled atmosphere, making it possible to modulate the ventilation rates, as a function of an electrical signal originating, in particular, from probes evaluating the real needs in each room.
  • the present invention aims to remedy these drawbacks by providing a control device and an operating cycle allowing the ventilation of a room with controlled atmosphere to be regulated at will, while being easy to use and usable in any circumstance.
  • a device for regulating the ventilation of a room with a controlled atmosphere installation comprising at least one probe placed in the room considered for picking up the desired information, such as the temperature, the rate of hygrometry the carbon dioxide or other similar levels, or the occupation or vacancy of this room, a valve, of the deformable bladder type, placed in the ventilation duct of the room and controlled by pilot pressure of the valve according to the information captured by the probe.
  • desired information such as the temperature, the rate of hygrometry the carbon dioxide or other similar levels, or the occupation or vacancy of this room
  • a valve, of the deformable bladder type placed in the ventilation duct of the room and controlled by pilot pressure of the valve according to the information captured by the probe.
  • This device comprises, in combination, a pressure divider intended to deliver the pilot pressure of the valve from the different pressures P1 and P2 from two pressure sources to which it is connected, two deformable capsules as a function of the setpoint signals received and acting on a movable element of the pressure divider with reverse effects to vary the pilot pressure as a function of the above-mentioned setpoints, energy supply means, necessary for the variation of the internal pressure in the capsules, depending on the instructions received, the means associated with the capsules making it possible to overcome the effects of the variation in atmospheric pressure, and a member for controlling the energy supply means able to receive a signal emitted by the probe and to emit, according to a predetermined cycle, consisting of a succession of periods of feeding and relaxation of the two capsules, a signal for controlling the pilot pressure P3.
  • the device operates by referring to two pressure sources P1, P2.
  • the pressure divider of this device comprises a body having two inlet ports each of which is connected to one of the aforementioned pressure sources and an outlet port connected to the pilot control port with interposition, between the ports inlet and outlet, of a movable member, such as a core or slide, axially movable, allowing to modify the ratio of the mixture of inlet pressures which determines the outlet pressure or pilot pressure.
  • each deformable capsule is constituted by a body, in the form of a closed envelope, of which a wall part is elastically movable in the direction of the movable member of the pressure divider, in view to move it to the position determined by the setpoint signal received, by this capsule, from the control member.
  • the rigid envelope contains a small volume and its part of elastically mobile wall is constituted by a deformable membrane, attached or not, consuming a low deformation energy.
  • the wall of one of the capsules has a thickness less than that of the other capsule.
  • the two capsules are connected to the outside air by a calibrated passage of the controlled micro-leakage type, in such a way that the quantities of air which can escape during the periods of feeding of the capsules , are negligible.
  • Such a leak makes it possible to balance the internal pressure of the capsule with the ambient pressure in a fairly long time relative to the durations of the different sequences of the control cycle, and in this way to overcome variations in atmospheric pressure.
  • the means for moving the movable wall part of each capsule in the direction of the movable element of the pressure divider are constituted by a heating element, of the resistive type, the temperature of which increases as a function of the applied electric current, which has the effect of increasing the internal pressure of this capsule and of pushing back its mobile wall part.
  • This embodiment of the capsules is advantageous because, in this case, the heating elements can be supplied with a power of 1 Watt, which constitutes a very low energy consumption.
  • control member makes it possible to trigger periods of supply of energy to the capsules, to program a succession of periods of supply of these capsules, to select a supply period of one of the two capsules which must, by its action on the moving element of the pressure divider, determine the opening of the valve according to the signals coming from the probe, collected during the re-cooling period, and to define for this period the power to be supplied to this capsule in function signals from the probe during this relaxation period.
  • this control device makes it possible to modulate the ventilation flows according to the real needs existing in each room.
  • This control member of the energy supply means makes it possible to trigger periods of energy supply to the capsules, the duration of which is limited to the time necessary for the deformations of said capsules to practically reach a state of equilibrium.
  • This control member authorizes, for a given supply phase, the capsule which, by its action on the pressure divider, determines the opening of the valve as a function of the signals coming from the probe during the last phase or phases of relaxation.
  • the detection probe placed in the room is an infrared probe.
  • This probe makes it possible to detect the presence of occupation or vacancy in the room.
  • the means of supplying energy to the two capsules consist of at least one electric battery.
  • These energy supply means of the two capsules have a variable power so as to allow, from a certain threshold, only the displacement of the thinnest wall of these two capsules.
  • this device allows operation of this device allowing it to safely regulate the atmosphere of the room. Indeed, in the case where the power of the supply means no longer allows the heating elements to be fed for only one of the two capsules, these drive the pressure divider in a position such that the connected pressure conduit upper is closed. In this way, the bladder is subjected to the lower pressure and the air flow is maximum.
  • the movable element of the pressure divider is associated with a brake intended to eliminate any parasitic pursuit of its travel.
  • This brake makes it possible in particular to maintain the position of the movable element, by overcoming the inclination of the device and the influence of any source of vibration which may possibly modify the adjustment.
  • the pilot pressure outlet pipe has a conical throttle.
  • the duration of the fourth period is the most important of the cycle, in order to preserve the low energy use as much as possible. It should be noted that the bladder inflated by the pilot pressure remains in the same position throughout this fourth period, which promotes the overall balance of the network, and avoids any pumping phenomenon.
  • This operating mode eliminates the systematic transition to the lower pressure during the first and second periods of the previous cycle, which makes it possible to increase the stability of the pressures in the ventilation networks and to avoid the presence of a constriction in the duct. the valve pilot pressure output.
  • This mode of regulation is particularly well suited to ventilation, since the concentration of pollutants always evolves at fairly low speeds, an excessively fast control cycle being neither necessary nor desirable for the overall stability of large installations.
  • control element of the heating elements is arranged to carry out comparisons of several signals coming from different probes located in the room, examinations of a priority order, before developing the instruction signal transmitted to the capsules.
  • the device in this way operates on an "all or nothing" cycle, which increases its possibilities of use.
  • it is used, according to this embodiment to control the adjustment of the ventilation rate of the room with controlled atmosphere, in the case where the room is occupied by people.
  • FIG. 1 represents a view of a regulation installation using the control device of the invention.
  • a probe 1 for detecting the need for ventilation is placed in a room 7. Signals S emanating from this probe are routed, by an appropriate means, to the control member 2 which transforms them into instructions C1 and C2; C1 is a reference setpoint, i.e. independent of the ventilation requirement, which allows the control device to be reset, while C2 is a reference value depending on the ventilation requirement of the room to controlled atmosphere, and which allows the chain of command to provide an appropriate response to needs.
  • the control device 3 receives, by known means of signal transmission, the instructions C1 and C2 coming from the control member 2 and, on the other hand, communicates by two conduits with two different pressure sources P1, P2.
  • One of the pressures P2, which constitutes the upper pressure, is that which prevails in the conduit 6 opening into the room 7, while the other P1, which is that which is the ambient pressure, constitutes the lower pressure.
  • P3 a pilot pressure directly injected into the control element 4 which is a valve of the bladder type, the swelling of which is linked to the value of this pilot pressure P3, and which releases a passage more or less large for the air conveyed in the duct 6, opening into the room 7, depending on whether the pilot pressure is higher or lower.
  • the presence of an environment with studied geometry 5 allows to associate known flow rates with the different values of P3.
  • the control device 3 is a means of processing and shaping the control signals, it generates the cycle of alternating deformations in the two capsules A and B.
  • this control device 3 comprises a pressure divider 8 whose body has two inlet ports 8e and 8d, each being connected to one of the above pressure sources and an outlet port 8f connected to the pilot orifice of valve 4 with interposition, between the inlet orifices 8e and 8d and the outlet orifice 8f, of an axially movable core or slide, of the cylindrical piston 9 type 9.
  • This piston 9 is constituted by two nozzles 9a and 9b secured to a central element 9c of smaller diameter, which makes it possible to modify the mixture ratio of the inlet pressure, ratio which determines the outlet pressure P3 or pilot pressure as a function of the position of its ends relative to the inlet ports of the aforementioned pressures.
  • Two capsules A and B situated on either side of the movable element consisting of a body 10a and 10b in the form of a closed envelope of small volume and of which a wall part 11a, 11b is elastically movable in the direction of the movable element 8 of the pressure divider 9, in order to move it into the position determined by the reference signal C1, C2 received from the control member 2.
  • Each capsule A and B has a calibrated passage 12a, 12b of small section constituting a controlled micro-leakage which is connected to the outside and a heating element of the resistive type 13a, 13b whose temperature increases as a function of the electric current applied, which has the effect of increasing the internal pressure of this and push the part of the movable wall 11a, 11b.
  • a brake 14 is placed on the external part of each end piece 9a, 9b of the movable element 9 so as to avoid any parasitic pursuit of its stroke.
  • the outlet pipe 8f of the pilot pressure P3 has a conical throttle 15 which makes it possible to limit any pumping phenomenon and to limit the time intended for restoring the pilot pressure P3.
  • FIGS. 3 to 10 A first mode of use of this device is illustrated by FIGS. 3 to 10.
  • This first mode of use corresponds to an operating cycle lasting a total of a few minutes and comprising four periods T1, T2, T3, T4.
  • the first, T1 illustrated in Figures 3 and 4 is intended to return the movable member 9 of the pressure divider 8 of the control device 3 to its original position.
  • a setpoint C1 is supplied to the heating element 13a of the capsule A; this setpoint is maintained for a determined time, so that the movable element 9 of the pressure divider 8 is driven in the extreme position by the deformation of the elastic zone 11a, which has the consequence that the inlet port 8d connected to the lower pressure source, i.e. the pressure P1 is closed so that the inlet port 8e connected to the upper pressure source P2 communicates completely with the outlet port 8f of pressure P3 outlet valve 4, the pilot pressure P3 being in this way equal to the pressure P2.
  • the bladder 4 is in this way subjected to the pressure P2 and its volume is maximum, which corresponds to an air flow which is minimum.
  • the other capsule B receiving no signal.
  • the second period T2 illustrated by FIGS. 5 and 6, is intended to allow the deformed zone 11a to return to its initial state, neither of the two capsules receives a reference signal, the movable element 9 of pressure divider 8 retaining its position so that the outlet pressure P3 is always equal to the pressure P2.
  • the third period T3, illustrated by FIGS. 7 and 8, is intended to place the movable element 8 of the pressure divider 9 in a position dependent on the detection signal S emitted by the source 1.
  • the information captured by the probe 1 is transmitted to the control member 2 which sends a control signal or setpoint C2 to the heating element 13b of the second capsule B, intended for the displacement in the opposite direction of the movable member 9 of the pressure divider 8 over a stroke determined by the value of the setpoint C2, by virtue of the displacement of the elastic zone 11b in order to obtain the pilot pressure by the mixture thus obtained of the two supply pressures.
  • the cycle shown makes it possible to associate, with a setpoint value equal to 3/4 of the maximum setpoint, a pilot pressure value P3 equal to 3/4 of the difference in pressures (P1-P2), and, the response is therefore linear over the entire regulation range.
  • Heating of the capsule B can be carried out either for a variable time as a function of the information from the detection probe 1 with constant power, or for a constant time with power variable depending on probe 1 information.
  • the fourth period T4 represented in FIGS. 9 and 10, the duration of which is greater than 50% of the total duration of the cycle, is intended to maintain the movable element 9 of the pressure divider 8 in its position determined by the preceding period of so that the pilot pressure P3 remains equal to 3/4 of (P1-P2), during this period none of the capsules receives a setpoint signal.
  • the second capsule B thus finds the undeformed position, the elastic zone having kept its position, in the same way as the capsule A during the second period. Then there is a return to period T1.
  • its operating cycle can be that illustrated by FIGS. 11 to 15.
  • This cycle has a total duration of several minutes and initially includes three periods T1, T2, T3 followed by a succession of periods T2 and T3.
  • the first period T1 is illustrated in FIGS. 11 and 12.
  • the control member 2 transmits a setpoint C2, corresponding to the signal S emitted by the probe 1, to the heating element 13b of the capsule B, the elastic zone 11b deforms and causes the movable element 9 of the pressure divider 8 to move to a desired position defined by the control parameters, in order to obtain a pilot pressure P3 of the valve 4 suitable for ventilation needs from room 7, the other capsule A receiving no setpoint signal.
  • the second period T2 is illustrated in FIGS. 13 and 14. During this period, no capsule receives a reference signal for a defined time, the movable element 9 of the pressure divider 8 retaining its position. The elastic zone 11b also finds an undistorted position, and the piloting pressure P3 keeps the same value as during the previous period.
  • the value of the signal S of the probe 1 is compared with the value it had during the previous measurement.
  • the control member 2 emits a setpoint signal C2 intended for the displacement of the movable element 9 of the pressure divider 8 as a result of the deformation of the elastic zone 11b of the capsule B, such that the inlet port 8d connected to the lower pressure source P1 communicates more widely with the outlet port 8f thus providing a pilot pressure P3 of the valve 4 closer to the lower pressure P1.
  • the bladder 4 is in this way subjected to a pressure closer to P1 its volume decreases and the air flow increases.
  • the new measurement indicates a lower need for ventilation, as shown in FIGS. 17 and 18, there is an emission by the control member 2 of a setpoint C1 transmitted to the capsule A intended for the movement of the mobile element 9 of the pressure divider 8 in the opposite direction, as a result of the deformation of its elastic zone 11a, so that the inlet orifice 8e connected to the upper pressure probe P2 communicates more widely with the orifice 8f outlet supplying a pilot pressure P3 closer to P2.
  • the bladder 4 is in this way subjected to a pressure closer to P2, its volume increases and the air flow decreases.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Control Of Fluid Pressure (AREA)

Claims (13)

  1. Vorrichtung zur Regulierung der Luftzufuhrrate in einem Raum mit geregelter Atmosphäre, die zumindest eine Meßsonde (1) umfaßt, die in dem fraglichen Raum (7) angeordnet ist, um die gewünschte Information, wie Temperatur, Wert der Luftfeuchtigkeitsmessung, Kohlendioxidwert und ähnliches oder noch die etwaige Bemannung des Raumes (7), zu erfassen, sowie einen Schieber (4) in Form einer verformbaren Blase, der in der Lüftungsleitung (6) des Raumes (7) angeordnet ist und durch den Regeldruck (P3) des Schiebers (4) abhängig von den Informationen, die von der Meßsonde (1) erfaßt werden, gesteuert wird, dadurch gekennzeichnet, daß sie einen Druckteiler (8) umfaßt, der zur Abgabe des Regeldrucks (P3) des Schiebers dient, der sich aus verschiedenen Drücken (P1) und (P2) von zwei Druckquellen, mit denen er verbunden ist, zusammensetzt; in Verbindung mit zwei Kapseln (A, B), die abhängig von empfangenen Einstellsignalen verformt werden und auf ein bewegliches Element (9) des Druckteilers (8) mit umgekehrter Wirkung wirken, so daß der Regeldruck (P3) abhängig von den genannten Einstellwerten verändert wird; sowie mit Energieversorgungsmitteln (13a, 13b), die für die Veränderung des Innendruckes in den Kapseln (A, B) abhängig von den empfangenen Einstellwerten notwendig sind; Mitteln (12a, 12b), die mit den Kapseln (A, B) verbunden sind, um diese von den Auswirkungen einer atmosphärischen Druckveränderung unabhängig zu machen; und mit einem Steuerorgan (2) der Energieversorgungsmittel (13a, 13b), das ein von der Meßsonde (1) ausgegebenes Signal (S) empfangen und in einem vorbestimmten Zyklus, der aus einer Folge von Versorgungs- und Entspannungsperioden der beiden Kapseln (A, B) besteht, ein Steuersignal des Regeldruckes (P3) ausgeben kann.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß jede verformbare Kapsel (A, B) aus einem Körper (10a, 10b) in Form einer geschlossenen Hülle besteht, wobei ein Teil der Wand (11a, 11b) elastisch in Richtung des beweglichen Elementes (9) des Druckteilers (8) bewegbar ist, so daß dieser durch das Einstellsignal des Steuerorgans (2), das von dieser Kapsel empfangen wird, in eine bestimmte Position verschoben werden kann.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Wand (11b) der Kapsel (B) eine geringere Dicke als die Wand (11a) der Kapsel (A) aufweist.
  4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Kapseln (A, B) durch einen kalibrierten Durchlaß (12a, 12b) in der Art einer kontrollierten Undichtigkeit mit der Außenluft verbunden, so daß die Luftmengen, die während der Versorgungsperiode den Kapseln (A, B) entweichen können, vernachlässigbar sind.
  5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Mittel zum Verschieben des beweglichen Wandteiles (11a, 11b) jeder Kapsel (A, B) in Richtung des beweglichen Elementes (9) des Druckteilers (8) aus einem Widerstands-Heizelement (13a, 13b) bestehen, dessen Temperatur abhängig von dem angelegten elektrischen Strom zunimmt, wodurch der Innendruck dieser Kapsel erhöht und der bewegliche Wandteil zurückgedrängt wird.
  6. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Steuerorgan (2) das Auslösen der Energieversorgungsperioden für die Kapseln (A, B) ermöglicht, sowie das Programmieren einer Folge von Versorgungsperioden dieser Kapseln (A, B), die Auswahl einer der beiden Kapseln für eine bestimmte Versorgungsperiode, die durch ihre Wirkung auf das bewegliche Element (8) des Druckteilers (9) die Öffnung des Schiebers (4) abhängig von den Signalen, die von der Sonde (1) ausgehen und während der Entspannungsperiode empfangen uurden, bestimmen kann, und die Bestimmung der Leistung, die in dieser Periode an die genannte Kapsel abhängig von den Signalen, die von der Sonde (1) während der Entspannungsperiode ausgehen, geliefert wird.
  7. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die in dem Raum (7) angeordnete Nachweissonde (1) eine Infrarotsonde ist.
  8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Energieversorgungsmittel der Kapseln (A, B) aus zumindest einer elektrischen Zelle bestehen.
  9. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Bremse (14) mit dem beweglichen Element (9) des Druckteilers (8) verbunden ist, die zur Verhinderung jeder störenden Fortsetzung seines Weges dient.
  10. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Ausgangsleitung (8f) des Regeldruckes (P3) eine Drosselung (15) in konischer Form umfaßt.
  11. Betriebszyklus der Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Gesamtdauer mehrere Minuten beträgt und daß er die folgenden vier Perioden umfaßt:
    - eine erste Periode, in der das Steuerorgan ein Einstellsignal (C1) ausgibt, das an die erste Kapsel (A) übertragen wird, das heißt, an jene, die für die Rückstellung des beweglichen Elementes (9) des Druckteilers (8) in die Ausgangsposition dient, so daß die Eingangsöffnung (8e), die mit der Druckquelle (P2) verbunden ist, mit der Ausgangsöffnung (8f) in Verbindung steht, die den Regeldruck (P3) des Schiebers (4) liefert, wobei die Blase (4) somit einem Druck (P2) ausgesetzt wird, während die andere Eingangsöffnung (8d) verschlossen ist und die andere Kapsel (B) kein Signal empfängt;
    - eine zweite Periode, die für die Entspannung der beiden Kapseln (A, B) vorgesehen ist, wobei keine ein Einstellsignal empfängt und das bewegliche Element (9) des Druckteilers (8) seine Position beibehält;
    - eine dritte Periode, in der jede Sonde (1) ein Informationssignal ausgibt, das an das Steuerorgan (2) übertragen wird, das selbst ein Steuersignal ausgibt, das an die zweite Kapsel (B) übertragen wird und zur Verschiebung des beweglichen Elementes (9) des Druckteilers (8) in die entgegengesetzte Richtung um eine Strecke dient, die durch die von der Nachweissonde (1) gegebene Information bestimmt wird, um eine richtige Mischung der beiden Versorgungsdrücke (P1, P2) des Regeldruckes (P3) des Schiebers (4) zu erhalten, die den Anforderungen des Raumes (7) entspricht, wobei die andere Kapsel (A) kein Signal empfängt;
    - eine vierte Periode, deren Dauer mehr als 50% der gesamten Zyklusdauer beträgt und die zur Entspannung der beiden Kapseln (A, B) vorgesehen ist, wobei keine ein Einstellsignal empfängt und das bewegliche Element (9) des Druckteilers (8) dieselbe Position beibehält wie in der vorangehenden Periode und der Zyklus wieder beginnt.
  12. Betriebszyklus der Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Gesamtdauer mehrere Minuten beträgt und daß er die folgenden drei Perioden umfaßt:
    - eine erste Periode, in der das Steuerorgan (2) aufgrund der Steuerinformationen, die von jeder Nachweissonde (1) des Raumes (7) ausgegeben werden, ein Einstellsignal (C2) ausgibt, das an die Kapsel (B) übertragen wird, die zur Verschiebung des beweglichen Elementes (9) des Druckteilers (8) in eine bestimmte Position dient, um einen Ausgangsdruck (P3) des Schiebers (4) zu erhalten, der den Belüftungsanforderungen des Raumes (7) entspricht, während die andere Kapsel (A) kein Einstellsignal empfängt;
    - eine zweite Periode, die für die Entspannung der beiden Kapseln (A, B) vorgesehen ist, wobei keine ein Einstellsignal empfängt und das bewegliche Element (9) des Druckteilers (8) seine Position beibehält; und
    - eine dritte Periode, in der der Wert des von der Nachweissonde (1) im Raum ausgegebenen Signales (S) mit jenem der vorangehenden Messung verglichen wird und in der, wenn der Belüftungsbedarf größer ist, das Steuerorgan (2) ein Einstellsignal (C2) ausgibt, das an die Kapsel übertragen wird, die zum Verschieben des Druckteilers (8) bestimmt ist, so daß die Eïngangsöffnung (8d), die mit der schwächeren Druckquelle (P1) in Verbindung steht, stärker mit der Ausgangsöffnung (8f) verbunden wird, um so einen Regeldruck (P3) des Schiebers (4) zu erhalten, der näher dem geringeren Druck (P1) liegt, wobei die Blase (4) auf diese Weise einem Druck ausgesetzt wird, der näher bei (P1) liegt, so daß ihr Volumen abnimmt und der Luftstrom zunimmt, und wenn im Gegensatz dazu der von jeder Sonde (1) im Raum (7) nachgewiesene Belüftungsbedarf geringer ist, das Steuerorgan (2) ein Einstellsignal (C1) ausgibt, das an die andere Kapsel (A) übertragen wird, so daß das bewegliche Element (9) des Druckteilers (8) in die umgekehrte Richtung verschoben wird, so daß die Eingangsöffnung (8e), die mit der stärkeren Druckquelle (P2) in Verbindung steht, stärker mit der Ausgangsöffnung (8f) verbunden wird, um so einen Regeldruck (P3) des Schiebers (4) zu erhalten, der näher dem höheren Druck (P2) liegt, wobei die Blase (4) auf diese Weise einem Druck ausgesetzt wird, der näher bei (P2) liegt, so daß ihr Volumen zunimmt und der Luftstrom abnimmt.
  13. Betriebszyklus der Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß er folgendes umfaßt:
    - eine erste Periode, die, sobald die Sonde (1) eine Anwesenheit erfaßt, während die Blase (4) ein maximales Volumen besitzt und die Luftzufuhrrate minimal ist, mit der Ausgabe eines Einstellsignales (C2) des Steuerorgans beginnt, das an die Kapsel (B) übertragen wird, die zum Verschieben in die umgekehrte Richtung des Druckteilers dient, so daß die Eingangsöffnung (8d),die mit dem neuen Druck P1 verbunden ist, mit der Ausgangsöffnung (8f) in Verbindung steht und die andere mit dem Druck P2 verbundene Eïngangsöffnung verschlossen ist, um so einen Regeldruck P3 der Blase zu erhalten, wobei diese Blase somit dem Druck P1 ausgesetzt wird und ihr Volumen minimal ist, was einem maximalen Luftstrom entspricht, wobei diese Periode zur Aufrechterhaltung dieses Zustandes fortgesetzt wird, solange die Anwesenheits-Nachweissignale in kürzeren als den vorbestimmten Zeitabständen aufeinanderfolgen;
    - eine zweite Periode, die, sobald die Meßsonde (1) keine Anwesenheit in einem Zeitraum der obengenannten bestimmten Dauer nachgewiesen hat, während die Blase ein minimales Volumen besitzt und der Luftstrom maximal ist, mit der Aussendung eines Einstellsignales (C1) des Steuerorgans beginnt, das an die Kapsel (A) übertragen wird, die mit der Druckquelle P1 verbunden ist, so daß die Eingangsöffnung (8e), die mit der Druckquelle P2 in Verbindung steht, mit der Ausgangsöffnung (8f) verbunden ist, während die Öffnung (8d) die mit dem Druck P1 verbunden ist, verschlossen ist, um so einen Regeldruck P3 der Blase (4) zu erhalten, wobei diese Blase (4) auf diese Weise dem Druck P2 ausgesetzt wird und ihr Volumen maximal ist, was einem minimalen Luftstrom entspricht, wobei diese Periode zur Aufrechterhaltung dieses Zustandes fortgesetzt wird, solange keine Anwesenheit nachgewiesen wird.
EP90402938A 1989-11-06 1990-10-19 Steuervorrichtung und Arbeitszyklus für die Durchflussregeleinrichtung der Lüftung eines Raumes mit kontrollierter Atmosphäre Expired - Lifetime EP0427585B1 (de)

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AT90402938T ATE86378T1 (de) 1989-11-06 1990-10-19 Steuervorrichtung und arbeitszyklus fuer die durchflussregeleinrichtung der lueftung eines raumes mit kontrollierter atmosphaere.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8914752A FR2654197B1 (fr) 1989-11-06 1989-11-06 Dispositif de commande pour installation de reglage du debit de ventilation d'un local a atmosphere controlee et cycle de fonctionnement.
FR8914752 1989-11-06

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EP0427585A1 EP0427585A1 (de) 1991-05-15
EP0427585B1 true EP0427585B1 (de) 1993-03-03

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EP (1) EP0427585B1 (de)
JP (1) JPH03168549A (de)
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CA (1) CA2029212A1 (de)
DE (1) DE69001010T2 (de)
ES (1) ES2039119T3 (de)
FR (1) FR2654197B1 (de)

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DE10144806A1 (de) * 2001-09-12 2003-03-27 Behr Gmbh & Co Kg Vorrichtung zur Durchsatzregelung eines Mediums durch einen Kanal und zur Temperaturermittlung des Mediums in dem Kanal
FR2839144B1 (fr) * 2002-04-25 2004-12-17 Conseils Etudes Et Recherches En Gestion De Lair Cerga Procede de pilotage du debit de ventilation d'un local et dispositif
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FR2654197B1 (fr) 1992-01-24
DE69001010T2 (de) 1993-06-17
JPH03168549A (ja) 1991-07-22
DE69001010D1 (de) 1993-04-08
CA2029212A1 (fr) 1991-05-07
FR2654197A1 (fr) 1991-05-10
ATE86378T1 (de) 1993-03-15
US5143287A (en) 1992-09-01
EP0427585A1 (de) 1991-05-15
ES2039119T3 (es) 1993-08-16

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