EP0427585A1 - 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

Info

Publication number
EP0427585A1
EP0427585A1 EP90402938A EP90402938A EP0427585A1 EP 0427585 A1 EP0427585 A1 EP 0427585A1 EP 90402938 A EP90402938 A EP 90402938A EP 90402938 A EP90402938 A EP 90402938A EP 0427585 A1 EP0427585 A1 EP 0427585A1
Authority
EP
European Patent Office
Prior art keywords
pressure
capsule
period
capsules
probe
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP90402938A
Other languages
English (en)
French (fr)
Other versions
EP0427585B1 (de
Inventor
Pierre Jardinier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
D'etude Et De Recherche En Ventilation Et Aeraulique Serva Ste
Original Assignee
D'etude Et De Recherche En Ventilation Et Aeraulique Serva Ste
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 D'etude Et De Recherche En Ventilation Et Aeraulique Serva Ste filed Critical D'etude Et De Recherche En Ventilation Et Aeraulique Serva Ste
Priority to AT90402938T priority Critical patent/ATE86378T1/de
Publication of EP0427585A1 publication Critical patent/EP0427585A1/de
Application granted granted Critical
Publication of EP0427585B1 publication Critical patent/EP0427585B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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 control device for an installation for adjusting the ventilation flow rate of a room with controlled atmosphere, making it possible to modulate the ventilation flow 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 control device for an installation for regulating the ventilation of a room with controlled atmosphere an installation essentially 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 rate of carbon dioxide or other similar, or the occupation or the 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 received by the probe.
  • This control 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 inverse effects to vary the pilot pressure according to the above-mentioned setpoints, means of power supply, 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 feeding and relaxation periods 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.
  • a first mode of use of this device its operating cycle, the total duration of which is several minutes, comprises four periods: a first period during which the control unit emits a setpoint signal transmitted to the first capsule, that is to say that intended for returning the movable element of the pressure divider to its original position, such so that the inlet port connected to the upper pressure source communicates with the outlet port providing the pilot pressure of the valve, while the other inlet port is closed, the other capsule receiving no signal, a second period provided for allowing the relaxation of the two capsules, neither receiving a set signal, the movable element of the pressure divider retaining its position, a third period during which each probe transmits an information signal transmitted to the control member and which itself transmits a control signal transmitted to the second capsule, intended for movement, in the opposite direction of the movable member of the pressure divider, on a stroke determined by the information delivered by the detection probe, in order to obtain an appropriate mixture of the two supply pressures of the valve pilot pressure corresponding to the need of the room, the other capsule not receiving any
  • the duration of the fourth period is the most important of the cycle, in order to preserve the low energy consumption 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.
  • its operating cycle comprises the following three periods: a first period during which the control unit emits a setpoint signal transmitted to the capsule intended for the displacement of the movable element of the pressure divider to a determined position, by the control information emitted by each room detection probe , to obtain an outlet pressure appropriate to the ventilation requirement of the room, while the other capsule receives no setpoint signal, a second period provided for the relaxation of the two capsules, neither receiving a set signal, the movable element of the pressure divider retaining its position, and - a third period during which the value of the signal emitted by the detection probe in the room is compared with that of the previous measurement and during which, if the need for ventilation is greater, the control unit emits a setpoint signal transmitted to the capsule intended for movement of the pressure divider so that the inlet port connected to the lower pressure source communicates more widely with the outlet port so as to provide a pilot pressure for the valve closer lower pressure, the bladder being in this way subjected to a press
  • 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.
  • its operating cycle includes: - a first period which begins, as soon as the probe detects a presence, while the bladder has a maximum volume and the start of ventilation is minimum, by the emission of a setpoint signal C2 from the control member transmitted to the capsule B intended for the displacement in opposite direction of the pressure divider so that the inlet port connected to the pressure source P1 communicates with the outlet port, the other inlet port connected to the pressure P2 being closed, thereby providing a pilot pressure P3 of the bladder, this bladder being in this way subjected to pressure P1 and its minimum volume, which corresponds to an air flow which is maximum, this period continuing by maintaining this state as long as presence detection signals follow one another at intervals of time less than a predetermined duration a second period which begins, as soon as the probe has not detected any presence during the time interval of the aforementioned predetermined duration, while the bladder has a minimum volume and a maximum air flow, by the emission of a reference signal C1 of the control member transmitted to the capsule A connected to the
  • 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 sensor 1 for detecting the need for ventilation is placed in a room 7. Signals 5 emanating from this sensor 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 8c and 8d, each being connected to one of the aforementioned pressure sources and an outlet port 8f connected to the pilot orifice of valve 4 with interposition, between the inlet orifices 8c and 8d and the outlet orifice 8f, of a 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 of a total duration 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, so 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.

Landscapes

  • 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)
EP90402938A 1989-11-06 1990-10-19 Steuervorrichtung und Arbeitszyklus für die Durchflussregeleinrichtung der Lüftung eines Raumes mit kontrollierter Atmosphäre Expired - Lifetime EP0427585B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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

Publications (2)

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

Family

ID=9387265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402938A Expired - Lifetime EP0427585B1 (de) 1989-11-06 1990-10-19 Steuervorrichtung und Arbeitszyklus für die Durchflussregeleinrichtung der Lüftung eines Raumes mit kontrollierter Atmosphäre

Country Status (8)

Country Link
US (1) US5143287A (de)
EP (1) EP0427585B1 (de)
JP (1) JPH03168549A (de)
AT (1) ATE86378T1 (de)
CA (1) CA2029212A1 (de)
DE (1) DE69001010T2 (de)
ES (1) ES2039119T3 (de)
FR (1) FR2654197B1 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19700964C2 (de) * 1997-01-14 1999-06-24 Probst Max Josef Einrichtung zur Raumklimatisierung
AT410018B (de) * 1998-02-06 2003-01-27 Sticht Walter Mehrwegventil
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
US7392661B2 (en) * 2003-03-21 2008-07-01 Home Comfort Zones, Inc. Energy usage estimation for climate control system
US6983889B2 (en) * 2003-03-21 2006-01-10 Home Comfort Zones, Inc. Forced-air zone climate control system for existing residential houses
DE102005042338B4 (de) * 2005-09-06 2007-07-05 Siemens Ag Kathetereinrichtung
US7693809B2 (en) * 2006-09-12 2010-04-06 Home Comfort Zones, Inc. Control interface for environment control systems
DE102008050444C5 (de) * 2008-10-08 2015-03-26 Ltg Aktiengesellschaft Verfahren zur Belüftung eines Raumes
US9958168B2 (en) 2014-01-28 2018-05-01 Illinois Tool Works Inc. Cooking exhaust hood ventilation system and related methods
CN109595840A (zh) * 2017-09-30 2019-04-09 深圳市英维克科技股份有限公司 空调系统及其控制方法
US11060621B2 (en) * 2018-08-27 2021-07-13 Facebook Technologies, Llc Electromagnetically actuated fluidic-device valve apparatuses, systems, and methods
CN112413783B (zh) * 2020-11-24 2022-02-08 浙江华卓机电科技有限公司 一种用于电子仪器室的过滤系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331291A (en) * 1980-10-14 1982-05-25 Tempmaster Corporation Pneumatic control circuit for air distribution systems
DE3223424A1 (de) * 1981-11-17 1983-12-08 Fa. Aug. Winkhaus, 4404 Telgte Verfahren zur lueftung eines raumes, insbesondere wohnraumes
US4545524A (en) * 1983-11-25 1985-10-08 Alex Zelczer Zone control apparatus for central heating and/or cooling systems
US4783045A (en) * 1987-07-29 1988-11-08 Tartaglino Jerry J Inflatable bladder for control of fluid flow

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983285A (en) * 1959-06-05 1961-05-09 Lawrence H Gardner Solenoid operated valve
US3460573A (en) * 1966-11-21 1969-08-12 Gen Motors Corp Fluid control mechanism
US4211363A (en) * 1976-02-11 1980-07-08 McQuay-Perflex, Inc. Fluidically-controlled air-conditioning system
US4114645A (en) * 1976-08-27 1978-09-19 Pauliukonis Richard S Directional valves with thermo-electric operators
US4184634A (en) * 1978-04-18 1980-01-22 The Bendix Corporation Closed loop control for automatic temperature control system
US4356963A (en) * 1981-08-03 1982-11-02 Tempmaster Corporation Flow adjustment mechanism for air distribution systems
US4890790A (en) * 1988-10-03 1990-01-02 Robertshaw Controls Company Engine cooling system, structure therefor and methods of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331291A (en) * 1980-10-14 1982-05-25 Tempmaster Corporation Pneumatic control circuit for air distribution systems
DE3223424A1 (de) * 1981-11-17 1983-12-08 Fa. Aug. Winkhaus, 4404 Telgte Verfahren zur lueftung eines raumes, insbesondere wohnraumes
US4545524A (en) * 1983-11-25 1985-10-08 Alex Zelczer Zone control apparatus for central heating and/or cooling systems
US4783045A (en) * 1987-07-29 1988-11-08 Tartaglino Jerry J Inflatable bladder for control of fluid flow

Also Published As

Publication number Publication date
US5143287A (en) 1992-09-01
FR2654197A1 (fr) 1991-05-10
CA2029212A1 (fr) 1991-05-07
EP0427585B1 (de) 1993-03-03
DE69001010D1 (de) 1993-04-08
FR2654197B1 (fr) 1992-01-24
ATE86378T1 (de) 1993-03-15
JPH03168549A (ja) 1991-07-22
DE69001010T2 (de) 1993-06-17
ES2039119T3 (es) 1993-08-16

Similar Documents

Publication Publication Date Title
EP0427585B1 (de) Steuervorrichtung und Arbeitszyklus für die Durchflussregeleinrichtung der Lüftung eines Raumes mit kontrollierter Atmosphäre
EP1812838B1 (de) Selbstgesteuerte magnetventileinrichtung
EP1060348B1 (de) Vorrichtung zur regelung des luft/gasverhältnisses eines brenners mit einer druckunterschiedmessvorrichtung
EP2150867B1 (de) Gasmischpumpe mit variablem injektionsteil
EP0326494B1 (de) Vorrichtung für die Messung der Wärmekapazität einer Brennstoffströmung
FR2764037A1 (fr) Appareil de regulation
FR2586222A1 (fr) Servo de frein pneumatique
EP1148250B1 (de) Steuervorrichtung eines Stellglieds
EP0240394A1 (de) Wasser- oder Badgasbrenner
EP1295043A1 (de) Betätigungsglied mit pyrotechnischen mikroimpulstriebwerken
CA1273563A (fr) Methode et dispositif pour detecter un debit de fluide
FR2509829A1 (fr) Regulateur de pression a commande par solenoide
WO2017129906A1 (fr) Système de régulation de pression, ensemble de pile à combustible et utilisation du système de régulation
EP0272185A1 (de) Verfahren zur Regelung des Gasdurchflusses in einem Ventil und Durchflussregler, der dieses Verfahren anwendet
FR2465880A1 (fr) Systeme de controle d'alimentation en carburant d'un moteur a turbine a gaz
EP0278814A1 (de) Kraftstoffregler für Turbomaschinen
FR2538506A1 (fr) Capteur d'ionisation electronique pour la commande automatique de la demande d'air dans un appareil chauffe au gaz
WO2010067322A1 (fr) Dispositif et procédé de détection de fuite
FR2541434A1 (fr) Chauffe-eau instantane a gaz
EP1635117A1 (de) Verfahren zur Regelung des Luft-Brennstoffverhältnisses eines Brenners und Brenner zur Durchführung dieses Verfahrens
CA1335626C (fr) Dispositif d'equilibrage de debit, dispositif de climatisation d'aeronef comportant ledit dispositif d'equilibrage et aeronef comportant ledit dispositif de climatisation
FR2651879A1 (fr) Dispositif de mesure de debit dans un conduit, et installation de distillation du genre alambic charentais le comportant.
EP0354123A2 (de) Flüssigkeitsversorgungseinrichtung mit Pilotventil
FR2760517A3 (fr) Electrovanne d'interception pour appareils de cuisson a gaz
FR2502747A2 (fr) Bruleur a regulateur d'air

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19911104

17Q First examination report despatched

Effective date: 19920731

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930303

Ref country code: NL

Effective date: 19930303

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930303

Ref country code: DK

Effective date: 19930303

Ref country code: AT

Effective date: 19930303

REF Corresponds to:

Ref document number: 86378

Country of ref document: AT

Date of ref document: 19930315

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: JACOBACCI CASETTA & PERANI S.P.A.

REF Corresponds to:

Ref document number: 69001010

Country of ref document: DE

Date of ref document: 19930408

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930311

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2039119

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931031

Ref country code: LI

Effective date: 19931031

Ref country code: CH

Effective date: 19931031

Ref country code: BE

Effective date: 19931031

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
BERE Be: lapsed

Owner name: SOC. D'ETUDE ET DE RECHERCHE EN VENTILATION ET AER

Effective date: 19931031

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20001016

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20001018

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20001023

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011020

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20011019

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020702

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20021113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051019