EP1503151B1 - Installation de traitement d'air et de chauffage - Google Patents

Installation de traitement d'air et de chauffage Download PDF

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Publication number
EP1503151B1
EP1503151B1 EP03077377A EP03077377A EP1503151B1 EP 1503151 B1 EP1503151 B1 EP 1503151B1 EP 03077377 A EP03077377 A EP 03077377A EP 03077377 A EP03077377 A EP 03077377A EP 1503151 B1 EP1503151 B1 EP 1503151B1
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EP
European Patent Office
Prior art keywords
unit
control unit
ventilation
return valve
combustion
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Expired - Lifetime
Application number
EP03077377A
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German (de)
English (en)
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EP1503151A1 (fr
Inventor
Leonardus Hendrikus Josef Van Bohemen
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ITHO BV
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ITHO BV
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • F24H9/2042—Preventing or detecting the return of combustion gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners

Definitions

  • the invention relates to an air treatment and heating system, to a heating unit for use in such a system and to a ventilation unit for use in such a system.
  • fans are generally included in the building, for example a first fan between the rooms in the building and the discharge duct for ventilation and a second fan between the combustion air supply duct and the combustion chamber.
  • check valve in the discharge channel of the ventilation, between the common rooms on the one hand and the supply and discharge channels of the heating unit on the other.
  • This check valve is arranged to close when the lounges do not have sufficient overpressure relative to the discharge channel.
  • the check valve closes. This cuts off the supply of air to the heating unit, causing the heating unit to fail within a short time.
  • the check valve is probably also provided with a fuse that turns off the heating unit when it is detected that the check valve is not working well.
  • the check valve is particularly important if the common discharge channel is divided by a number of ventilation units. In this case, if one of the heating units discharges flue gas to the discharge channel, a defect in an arbitrary ventilation unit may give rise to a dangerous situation.
  • the heating unit is provided with a further non-return valve in order to prevent flue gases from flowing to the supply opening in the ventilation channel in the event of a defect in the combustion unit.
  • a further non-return valve in order to prevent flue gases from flowing to the supply opening in the ventilation channel in the event of a defect in the combustion unit.
  • the air treatment and heating system is applied in a building with several rooms, which have the discharge channel at least partially in common.
  • Each of the rooms is provided with its own part of the discharge channel, which opens onto the common part of the discharge channel, and each of the rooms is provided with its own ventilation unit, heating unit, check valve and control unit connected to its own part of the discharge channel as described in the claim 1. In this way, each of the rooms is protected from defects.
  • control unit is set up to have the defective check valve, and the potentially dangerous situation has not yet occurred, but could occur to make combustion impossible. This also happens when there is still a flow of air.
  • the impossibility can be instantaneous or if the defect has not disappeared within a certain time (for example 24 hours) after the alarm signal has been generated. This increases safety and provides a stronger warning to the user to remedy the defect.
  • control unit is configured to turn on the fan of the heating unit upon detection of absence of air flow through the discharge duct of the air treatment system.
  • the fan in this case assumes the function of the ventilation unit at least partially.
  • control unit is configured to control the action of the check valve during a test in which the ventilation unit is at a low ventilation level wherein there is a substantial difference between a first and a second value of the pressure drop with each check valve being properly responsive and being non-return open, which controller generates an alarm signal if, during the test, the pressure drop remains below a threshold between the first and second pressure drop values ,
  • FIG. 1 schematically shown a discharge channel 16 with an inlet 10, for example, to a common room in a building (not shown).
  • the air treatment and heating system includes a ventilation unit 11, a connection piece 12 and a heating unit 15.
  • the ventilation unit 11 contains a control unit 110.
  • the ventilation unit 11 is arranged between the inlet 10 and the discharge channel 16.
  • the connecting piece 12 is arranged in the discharge channel 16.
  • the connector 12 includes branches of the discharge channel 16 to a supply port 13 and a discharge port 14 of the heating unit 15.
  • the connector 12 further includes a first check valve 120 between the branches for the supply port 13 and the discharge port 14th
  • the heating unit 15 includes, in series with each other, another check valve 150, a fan 152 and a combustion unit 154.
  • the heating unit 15 further includes a control unit 156 coupled to the fan 152, the combustion unit 154 and the check valve 120 of the fitting 12.
  • the combustion unit has further connections for the transport of heat generated, for example to radiators of a central heating and / or connections for tap water.
  • the ventilation unit 11 sucks air through the inlet 10 from a common room of a building.
  • the ventilation unit preferably includes a fan between the inlet 10 and the discharge channel 16, if desired, the ventilation unit further includes a heat exchanger (not shown) for heating with the sucked air another air flow flowing to a space to be heated.
  • the ventilation unit 11 discharges the sucked air through the discharge channel 16, which communicates with the outside world outside the building.
  • the ventilation unit 11 normally continuously aspirates air, for example, an amount of 90 to 320 m 3 per hour, depending on a set ventilation intensity.
  • the discharged air flows through the connector 12, the air passes through the check valve 120, which is normally open when the pressure in the discharge channel upstream, in the direction of the ventilation unit 11, is higher than downstream in the other direction from the check valve 120th
  • the heating unit 15 is normally activated intermittently, for example whenever hot water is needed.
  • the control unit 156 turns on the fan 152 to supply combustion air.
  • the control unit turns on the fuel supply (for example, natural gas supply) to the combustion unit 154.
  • the combustion unit 154 burns the supplied fuel.
  • the heating unit 15 uses, for example, an air flow with a flow rate between 3 and 55 m 3 of air per hour. With a minimum discharge of 90 m 3 per hour from the ventilation unit 11, there is still at least one flow with a thickness of 35 m 3 per hour through the check valve 120 from the ventilation unit 11.
  • the flue gases produced during combustion pass combustion unit 154 through discharge opening 14 to discharge channel 16, downstream of check valve 120.
  • the flue gases are directed through discharge channel 16 in the normal air flow direction (indicated by arrows) dissipated.
  • the air flow through the check valve is equal to the air flow from the ventilation unit 11, possibly reduced by the (smaller) air flow through the heater unit 15. Under normal conditions, therefore, the air flow through the check valve 120 will have a minimum flow rate in one direction the ventilation unit 11.
  • the check valve 120 comes into operation in the event of a defect in the ventilation unit 11, whereby the air flow through the discharge channel is eliminated.
  • the pressure across the check valve 120 on the side of the discharge port 14 becomes higher than that on the side of the supply port 13.
  • the check valve 120 then closes and prevents flue gases from flowing back through the discharge channel 16 into the common room.
  • the check valve 120 may also be defective.
  • the following table describes a number of possible situations with a desired reaction of the plant. Ventilation on Ventilation off Check valve 120 permanently open Potential danger , if not resolved within 24 hours, must be burned out Danger of backflow of flue gases from the neighbors up and down Check valve 120 good (open / closed) No danger Normal operation Check the valve once every 24 hours No danger Within 24 hours the ventilation must be on to allow the boiler to control the valve, otherwise the combustion will be blocked later Check valve 120 permanently closed No danger the burning can not work well No danger Burning can work well.
  • Ventilation must be activated within 24 hours to allow the heating unit to control the check valve, otherwise the combustion will be blocked later (The aforementioned 24 hours are cited as an example at a time period that keeps a potentially more dangerous situation so short that the risk of accidents remains small, while the user of the facility gets the opportunity to respond before the end of that time period, in practice
  • the invention is not limited to 24 hours, 12 hours, 48 hours, one week, or periods in between are also contemplated.
  • a potential hazard occurs when the flow rate falls below a threshold when the check valve 120 is stuck, such that flow remains possible.
  • the flow direction can even reverse if the ventilation unit 11 has failed or does not work well and the check valve 120 nevertheless remains permanently open.
  • the check valve includes a sensor which generates a signal from which the control unit 156 can deduce whether the check valve 120 is working well or is undesirably open or closed under certain conditions.
  • a flow meter that measures the amount of air flow through the check valve 120 or a pressure differential meter for measuring the pressure difference between both sides of the check valve 120 is used for this sensor.
  • control unit 156 When the control unit 156 detects that the check valve 120 is permanently or at least excessively open based on the signal from the sensor in the check valve 120, the control unit 156 generates an alarm signal for a potentially dangerous fault on the check valve 120. Further, the control unit 156 preferably switches the combustion unit 154 from, for example, by switching off the supply of fuel to the fan 152, also a part of the functions of the heating unit, such as space heating only or tap heater only, can be switched off. This may only take some time, for example 24 hours, to give the user the chance to respond to warnings about the defect. The shutdown happens in any case, if the control unit 156 in this case, no air flow from the ventilation unit 11 by the check valve 120 measures.
  • control unit 156 When the control unit 156 detects from the sensor in the check valve 120 that the check valve 120 is permanently or at least too closed, then the control unit 156 permanently turns on the fan 152, for example, not only when the control unit 156 receives fuel Burn combustion unit 154 can supply. Besides, the control unit 156 generates in this case preferably a warning signal that warns the user and / or initiates an intervention in the action of the system. For example, in this case, the control unit 156 flashes a warning light (not shown) in the lounge, or warns it of a service over an Internet connection or alerts it in some other way.
  • a warning signal that warns the user and / or initiates an intervention in the action of the system.
  • the control unit 156 flashes a warning light (not shown) in the lounge, or warns it of a service over an Internet connection or alerts it in some other way.
  • the control unit 156 thus has a number of possible modes: a normal mode in which the fan 152 is turned on together with combustion in the combustion unit 154, a safety mode in which the fan is permanently turned on when the check valve 120 is closed , and an alarm mode in which the combustion unit 154 is turned off.
  • the safety mode the fan of the heating unit 15 modestly assumes the ventilation function when the ventilation unit 11 does not work or does not work well and / or when the check valve 120 is permanently closed.
  • the control unit 156 is preferably configured to execute a test program in cooperation with the ventilation unit 11 for detecting defects on the check valve 120.
  • a test program uses a pressure sensor that measures a pressure difference across the check valve 120.
  • Fig. 3 shows the pressure drop (entered vertically) via the check valve 120 as a function of the air flow (registered horizontally) through the check valve 120, both for a good-acting check valve 120 (curve 30) and for a permanently open check valve (curve 32).
  • the pressure drop is more or less constant over a certain range of flow strengths or at least greater than a fully open valve, because the pressure drop against the force of the to be pressed Check valve 120 acts.
  • a detection level is shown which the control unit 156 uses to detect faults in the check valve 120.
  • control unit 110 preferably periodically executes a program in which the ventilation unit 11 is switched off only during a first time interval (for example 2 minutes), then for a second time interval (for example 2 minutes) on a minimum ventilating one Position is switched on and finally during a third time interval (for example, 2 minutes) is switched to a maximum ventilating position.
  • a first time interval for example 2 minutes
  • a second time interval for example 2 minutes
  • a third time interval for example, 2 minutes
  • Fig. 4 shows the pressure drop across the check valve 120 as a function of time during such a test.
  • the first, second, and third time intervals are indicated as 41a-c.
  • a number of pressure gradients 40, 42, 44, 46 are shown, each for a normally acting unit 40, a system with a permanently open check valve 42, with a permanently closed check valve 44 and with a failed ventilation unit 46. Also, the level of the threshold 34.
  • control unit 110 and the control unit 156 Synchronize electronically during testing preferably a test algorithm is used, for which no additional communication is necessary.
  • FIG. 12 shows a flow chart of the action of the control unit 156 using the algorithm according to this embodiment.
  • the controller 156 cycles through the flowchart (for example, once per minute).
  • a first step 21 the control unit 156 checks whether a test has been carried out within a predetermined period. If not, then the control unit 156 performs a second step 22 in which the control unit 156 generates an alarm signal and turns off the combustion unit 154. Otherwise, in a third step 23, the control unit 156 executes a normal control program.
  • a fourth step 24 the control unit 156 checks whether the pressure drop across the check valve 120 falls below the threshold that in Fig. 3 at level 35 is indicated. If not, then the ventilation unit 11 acts normally and the control unit 156 ends the flow chart in a fifth step 25, whereupon the flow chart is repeated from the first step 21.
  • the control unit 156 checks in a number of steps 26a-d how long the pressure drop remains below the threshold. This is because in the second time interval, when the ventilation unit 11 is minimally ventilated, there is sufficient pressure drop across the check valve 120, from which it can be deduced that the check valve 120 behaves according to the curve 30 for a good-acting check valve 120 and not according to the curve 32 for the permanently open check valve.
  • control unit 156 will respond based on the assumption of a good-acting check valve 120 (curve 30). This is the case if the pressure drop has increased above the threshold before a time t2 which is within the second time interval (for example after 3.5 minutes).
  • the control unit 156 stores information indicating that a test has been performed at a respective time (so that the second step 22 will not be executed within a predetermined period after the first step 21) and thereafter the fifth step 25 from.
  • the control unit 156 checks whether the pressure drop has exceeded the threshold before a next time t3 (for example after four minutes) in the third time interval during which the ventilation unit 11 ventilates to the maximum would. If the pressure drop has not yet risen at this point in time t3, then obviously there is talk of a defect in the ventilation unit 11. If the pressure drop increases, then obviously an open check valve 120 is mentioned.
  • control unit 156 performs a ninth step 29 in which the control unit 156 both generates the alarm signal and turns off the combustion unit 154.
  • the control unit 156 now acts on the assumption that the check valve 120 is permanently open, so that a dangerous situation could arise during combustion if the ventilation unit 11 were to fail. If desired, the control unit 156 may thereafter repeat the flowchart from the first step, with the Combustion unit 154 remains off until a well-acting check valve 120 is detected.
  • the control unit executes a seventh step 27, in which the alarm signal is generated and preferably the combustion unit 154 is not or not permanently switched off.
  • the fan 152 of the heating unit 15 is now permanently switched on to partially take over the function of the ventilation unit 11.
  • the controller may thereafter repeat the flowchart from the first step with the combustion unit 154 remaining off until sufficient airflow through the check valve 120 is detected.
  • the pressure drop need only be compared to a threshold value. Therefore, a simple sensor that only indicates whether the pressure drop is above or below the threshold, such as a sensor having a switch that switches from one position to another when the pressure crosses the threshold, is sufficient.
  • the switching on and off of the ventilation unit and the test by the control unit 156 can be synchronized. In principle, then no special test mode is necessary because the control unit 156 can measure in normal operation, when the ventilation unit 11 indicates that it acts on maximum or minimum ventilation strength. Optionally, the ventilation unit 11 can switch specifically for the test between maximum and minimum ventilation strength.
  • Turning off the ventilation unit 11 during the test is for synchronization when no other communication is possible between the ventilation unit 11 and the control unit 156. It is not necessary that switching to minimum ventilation and maximum ventilation in the order described happens. As long as this is done in a predetermined time ratio to turn off, before or after, or after a break, the control unit can determine from what time different measurements must be used in the pressure case.
  • the fitting 12 is preferably supplied as a standard part for connection to a discharge duct 16 and a heating unit 15, but it may also be part of the heating unit.
  • the connecting piece 12 contains channel connections for the discharge channel 16, for example with a diameter of 150 mm (from the inside) and supply and discharge openings for the heating unit 15 with, for example, a diameter of 80 mm (from the inside).
  • the connector 12 includes the check valve 120, which is provided with a sensor for the air flow and direction through the check valve 120, with a sensor signal output for coupling to the control unit 156.
  • the connector 12 is carried out at the discharge opening of the heating unit 15 condensate discharging, preferably such that condensed water flows back to the combustion unit 154.
  • the ventilation and heating system on the one hand protects against the consequences of defects in the system and on the other hand, the possibility of maintaining a certain degree of functioning in the case of defects that are not directly serious.
  • a pressure decay sensor at the check valve 120 and a flow sensor can be used.
  • the flow sensor is positioned to the check valve 120, for example, such that the air flow through a portion of the discharge channel is selectively measured where a greater flow velocity occurs when the check valve 120 is partially open at a low pressure drop.
  • the difference between a well-functioning check valve 120 and a non-functioning check valve 120 can be determined based on the strength of the air flow in the time interval t1 to t2.
  • an accurate flow meter can of course be used to detect a dangerous backflow in normal use and then generate an alarm message.
  • Fig. 5 shows an air treatment and heating system with a plurality of independently ventilated spaces 50.
  • Each room has its own part 59a, b of the discharge channel, which is connected to a common part 58 of the discharge channel.
  • a ventilation unit 52 and a check valve 54 are respectively received in the own part 59a, b of the discharge channel.
  • a heating unit 56 is received in each case with an inlet and outlet, which are respectively coupled in front of and behind the check valve 54 to the own part 59a, b of the discharge channel, the supply to a first part 59a between the ventilation unit 52 and the check valve 54 and the discharge to a second own part 59b between the check valve 54 and the common part 58 of the discharge channel.
  • the discharge of the heating unit can also be coupled to the common part 59b of the discharge channel.
  • each of the heating units 56 acts as described in the system of Fig. 1 , A defect on a check valve 54 Such a system leads to a potential danger due to flue gases, which can in principle come from each of the heating units 56. This risk is contested by the fact that the action of the check valve is periodically checked with its own ventilation unit 52 and an alarm signal is given upon detection of a fault, for example by switching off its own heating unit 56.

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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)
  • Thermal Sciences (AREA)
  • Ventilation (AREA)
  • Regulation And Control Of Combustion (AREA)
  • Central Heating Systems (AREA)

Claims (17)

  1. Installation de traitement d'air et de chauffage comprenant
    - un conduit d'évacuation (16) ;
    - une unité de ventilation (11) pour extraire l'air d'une pièce d'un bâtiment vers le conduit d'évacuation ;
    - une unité de chauffage (15) dotée d'une ouverture d'admission (13) d'air et d'une ouverture d'évacuation (14) des gaz de fumée, les ouvertures d'admission et d'évacuation étant raccordées au conduit d'évacuation (16), l'ouverture d'évacuation étant disposée en aval de l'ouverture d'admission et l'unité de chauffage comportant une unité de combustion (154) et un ventilateur (152) monté en série entre l'ouverture d'admission et l'ouverture d' évacuation ; caractérisée par
    - un clapet anti-retour (150) monté dans le conduit d'évacuation entre l'ouverture d'admission et l'ouverture d'évacuation et doté d'un capteur de contrôle du fonctionnement du clapet anti-retour ; et
    - une unité de commande (156) de l'unité de chauffage, couplée au capteur et agencée pour émettre un signal d'alarme lorsqu'un signal du capteur indique que le clapet anti-retour présente un dysfonctionnement ayant pour effet que le clapet anti-retour ne se referme pas ou pas suffisamment lorsque aucun flux d'air de ventilation en provenance de l'unité de ventilation ne traverse le conduit d'évacuation.
  2. Installation de traitement d'air et de chauffage selon la revendication 1, pour une pluralité de pièces à ventiler indépendamment les unes des autres, dans laquelle chacune des pièces comporte sa propre partie du conduit d'évacuation (16) qui débouche sur une partie commune du conduit d'évacuation, ladite installation contenant pour chacune des pièces une unité de ventilation (11), une unité de chauffage (15), un clapet anti-retour (150) et une unité de commande (156) au sens de la revendication 1.
  3. Installation de traitement d'air et de chauffage selon la revendication 1 ou la revendication 2, dans laquelle l'unité de commande (156) est agencée pour empêcher toute combustion dans l'unité de combustion en cas de détection d'un dysfonctionnement.
  4. Installation de traitement d'air et de chauffage selon la revendication 3, dans laquelle l'unité de commande (156) est agencée pour, suite à la détection d'un dysfonctionnement, permettre, dans un premier temps, la combustion dans l'unité de combustion (154), au moins pendant un laps de temps prédéterminé, et pour empêcher la combustion après écoulement dudit laps de temps en cas de persistance du dysfonctionnement.
  5. Installation de traitement d'air et de chauffage selon l'une quelconque des revendications précédentes, dans laquelle l'unité de commande (156) est agencée pour détecter un autre dysfonctionnement ayant pour effet que le clapet anti-retour (150) ne peut pas ou pas suffisamment s'ouvrir, l'unité de commande étant agencée pour déclencher le ventilateur (152) de l'unité de combustion en réponse à la détection dudit autre dysfonctionnement.
  6. Installation de traitement d'air et de chauffage selon l'une quelconque des revendications précédentes, dans laquelle l'unité de commande (156) est agencée pour contrôler le fonctionnement du clapet anti-retour (150) pendant un test lors duquel l'unité de ventilation (11) est basculée à une puissance de ventilation faible, à laquelle il existe une différence notable entre une première et une seconde valeur du différentiel de pression de part et d'autre du clapet anti-retour attendues respectivement lorsque la clapet anti-retour se referme correctement et lorsque le clapet anti-retour reste ouvert sans action de fermeture, ladite unité de commande émettant un signal d'alarme lorsque le différentiel de pression mesuré lors du test reste en-deçà d'un seuil compris entre la première et la seconde valeur de différentiel de pression.
  7. Installation de traitement d'air et de chauffage selon la revendication 6, dans laquelle l'unité de ventilation (11) est agencée pour basculer périodiquement à la puissance de ventilation faible avant de rebasculer, après un temps prédéfini, à une puissance de ventilation à laquelle le différentiel de pression ne dépasse le seuil ni en cas de fonctionnement normal, ni en cas d'ouverture permanente ; et dans laquelle l'unité de commande est agencée pour synchroniser le contrôle avec le basculement par le biais de la détection de l'autre basculement.
  8. Installation de traitement d'air et de chauffage selon l'une quelconque des revendications précédentes, dans laquelle l'unité de commande (156) est agencée pour contrôler le fonctionnement du clapet anti-retour pendant un test lors duquel l'unité de ventilation (11) est basculée à une puissance de ventilation faible et lors duquel la vitesse d'air est mesurée dans une position où le débit d'air est mesuré respectivement lorsque le clapet anti-retour (120) se referme correctement et lorsque le clapet anti-retour reste ouvert sans action de fermeture, ladite unité de commande émettant un signal d'alarme quand, lors du test, la vitesse de l'air reste en-deçà d'un seuil compris entre la première et la seconde valeur.
  9. Installation de traitement d'air et de chauffage selon l'une quelconque des revendications précédentes, dans laquelle l'unité de chauffage (15) est dotée d'un autre clapet anti-retour (150) monté en série avec le ventilateur (152) et l'unité de combustion (154) entre l'ouverture d'admission et l'ouverture d'évacuation.
  10. Unité de chauffage (15) dotée de
    - une ouverture d'admission (13) d'air et une ouverture d'évacuation (14) des gaz de fumée,
    - une unité de combustion (154),
    - un ventilateur (152) monté en série avec l'unité de combustion, entre l'ouverture d'admission et l'ouverture d' évacuation ;
    - une unité de commande (156) de l'unité de chauffage, comprenant une entrée de détection pour recevoir du détecteur un signal indiquant un bon fonctionnement d'un clapet anti-retour (150) monté en parallèle avec l'unité de chauffage, ladite unité de commande étant agencée pour émettre un signal d'alarme lorsqu'un signal du détecteur indique que le clapet anti-retour présente un dysfonctionnement ayant pour effet que le clapet anti-retour ne se referme pas ou pas suffisamment lorsque aucun flux d'air de ventilation en provenance d'une unité de ventilation ne traverse le conduit d'évacuation (16).
  11. Unité de chauffage selon la revendication 10, dans laquelle l'unité de commande (156) est agencée pour empêcher la combustion dans l'unité de combustion (154) en cas de détection d'un dysfonctionnement.
  12. Unité de chauffage selon la revendication 11, dans laquelle l'unité de commande (156) est agencée pour, suite à la détection d'un dysfonctionnement, permettre, dans un premier temps, la combustion dans l'unité de combustion (154), au moins pendant un laps de temps prédéterminé, et pour empêcher la combustion après écoulement dudit laps de temps en cas de persistance du dysfonctionnement.
  13. Unité de chauffage selon l'une des revendications 10 à 12, dans laquelle l'unité de commande (156) est agencée pour détecter un autre dysfonctionnement ayant pour effet que le clapet anti-retour (150) ne peut pas ou pas suffisamment s'ouvrir, l'unité de commande étant agencée pour déclencher le ventilateur (152) de l'unité de combustion en réponse à la détection dudit autre dysfonctionnement.
  14. Unité de chauffage selon l'une des revendications 10 à 13, dans laquelle l'unité de commande (156) est agencée pour contrôler le fonctionnement du clapet anti-retour (150) pendant un test lors duquel l'unité de ventilation (11) est basculée à une puissance de ventilation faible, à laquelle il existe une différence notable entre une première et une seconde valeur du différentiel de pression de part et d'autre du clapet anti-retour attendues respectivement lorsque le clapet anti-retour se referme correctement et lorsque le clapet anti-retour reste ouvert sans action de fermeture, ladite unité de commande émettant un signal d'alarme lorsque le différentiel de pression mesuré lors du test reste en-deçà d'un seuil compris entre la première et la seconde valeur de différentiel de pression.
  15. Unité de chauffage (15) selon la revendication 14, destinée à être employée en combinaison avec une unité de ventilation (11) agencée pour basculer périodiquement à la puissance de ventilation faible avant de rebasculer, après un temps prédéfini, à une puissance de ventilation à laquelle le différentiel de pression ne dépasse le seuil ni en cas de fonctionnement normal, ni en cas d'ouverture permanente ; et dans laquelle l'unité de commande (156) est agencée pour synchroniser le contrôle avec le basculement par le biais de la détection de l'autre basculement.
  16. Unité de chauffage (15) selon la revendication 10, dans laquelle l'unité de commande (156) est agencée pour contrôler le fonctionnement du clapet anti-retour (150) pendant un test lors duquel l'unité de ventilation (11) est basculée à une puissance de ventilation faible et lors duquel la vitesse d'air est mesurée dans une position où le débit d'air est mesuré respectivement lorsque le clapet anti-retour se referme correctement et lorsque le clapet anti-retour reste ouvert sans action de fermeture, ladite unité de commande émettant un signal d'alarme quand, lors du test, la vitesse de l'air reste en-deçà d'un seuil compris entre la première et la seconde valeur.
  17. Unité de chauffage selon la revendication 10, dotée d'un autre clapet anti-retour (150) monté en série avec le ventilateur (11) et l'unité de combustion (154) entre l'ouverture d'admission (13) et l'ouverture d'évacuation (14).
EP03077377A 2002-07-29 2003-07-29 Installation de traitement d'air et de chauffage Expired - Lifetime EP1503151B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1021174 2002-07-29
NL1021174A NL1021174C2 (nl) 2002-07-29 2002-07-29 Luchtbehandelings- en verwarmingsinstallatie.

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EP1503151B1 true EP1503151B1 (fr) 2012-02-29

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JP3042619B2 (ja) 1998-07-13 2000-05-15 日本電気株式会社 二重バンド携帯電話機およびそのバンド選択方法
DE102019107369A1 (de) * 2019-03-22 2020-09-24 Vaillant Gmbh Verfahren zum Prüfen des Vorhandenseins einer Rückschlagklappe in einer Heizungsanlage
DE102021109832A1 (de) * 2021-04-19 2022-10-20 Vaillant Gmbh Verfahren zum Prüfen einer Rückschlagklappe in einer Heizungsanlage

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Publication number Priority date Publication date Assignee Title
US5138874A (en) * 1991-07-01 1992-08-18 General Motors Corporation Diagnostic system for detecting faults in engine air intake check valves
US5462082A (en) * 1994-10-07 1995-10-31 Lauria; Thomas J. Backflow preventer with failure indicator
NL9500223A (nl) * 1995-02-07 1996-09-02 Gastec Nv Systeem voor luchttoevoer en rookgasafvoer voor verbrandingstoestellen.
US5713240A (en) * 1996-06-26 1998-02-03 Ames Company, Inc. Method and apparatus for automatic remote testing of backflow preventers
FR2773389B1 (fr) * 1998-01-05 2000-02-11 Gaz De France Procede de fonctionnement d'un appareil de production de chaleur a melange de gaz, et appareil pour la mise en oeuvre de ce procede
KR100304907B1 (ko) * 1999-02-26 2001-09-24 구자홍 가스온풍기의 운전 제어장치 및 그 방법
DE10034485C2 (de) 2000-07-15 2003-03-13 Bosch Gmbh Robert Versorgungssystem für eine Wohnung mit gasbetriebenem Wärmeerzeuger und einer Lüftungsanlage

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NL1021174C2 (nl) 2004-01-30
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