EP2442041B1 - Mechanical ventilation facility by moisture-adjusted insufflation and associated method - Google Patents

Mechanical ventilation facility by moisture-adjusted insufflation and associated method Download PDF

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Publication number
EP2442041B1
EP2442041B1 EP11184678.8A EP11184678A EP2442041B1 EP 2442041 B1 EP2442041 B1 EP 2442041B1 EP 11184678 A EP11184678 A EP 11184678A EP 2442041 B1 EP2442041 B1 EP 2442041B1
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EP
European Patent Office
Prior art keywords
air
insufflation
humidity
temperature
premises
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EP11184678.8A
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German (de)
French (fr)
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EP2442041A1 (en
Inventor
Claude Bardoul
Michèle Potard
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Ventilairsec SARL
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Ventilairsec SARL
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Priority claimed from FR1058317A external-priority patent/FR2966226B1/en
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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
    • F24F11/77—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 by controlling the speed of ventilators
    • 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
    • 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
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/34—Heater, e.g. gas burner, electric air heater

Definitions

  • the present invention relates to the field of ventilation of premises, such as living quarters or offices, and more particularly a mechanical ventilation installation by insufflation.
  • VMC single flow or dual flow.
  • the principle of the VMC is the extraction, continuously or discontinuously, of the stale air of the housing by a centralized ventilation module disposed for example in the attic.
  • a VMC installation includes the suction of the exhausted indoor air from the dwelling by suction mouths located in so-called service rooms (such as a bathroom, kitchen, toilets) then the evacuation of this air towards the outside, this aspiration generating the entry of fresh air into the living rooms (living room) of the housing by a plurality of air intake vents disposed in the upper part of the joinery or in shutter boxes.
  • hygroregulated VMC plants which include moisture-sensitive membranes disposed at one or more suction mouths in one or more rooms of the housing so as to trigger a greater opening. one of the suction mouths in case of increased humidity.
  • the extraction rate of the exhaust air is thus controlled by the degree of humidity of the indoor air, in particular the extraction flow is increased when the indoor humidity level rises above a certain amount. threshold, for example.
  • JP 59035750 an installation to select an air inlet on the south or north side depending on whether the user wishes to promote the heating or cooling of the incoming air.
  • Ventilation ventilation devices have been proposed, the principle of which is the opposite of that of the VMC.
  • the principle of mechanical ventilation by insufflation is to take the air outside, to filter it, to preheat it and to insufflate it in the house, which places it in slight overpressure.
  • the outside air intake is usually carried out in one place, for example at roof level. Filtration is centralized as well as preheating. Thus, the filtered air and possibly preheated can be blown into the living rooms in one or more places of the house.
  • the air then emerges from the dwelling through a plurality of air outlets arranged, for example, in the upper part of the joinery or in roller shutter boxes (these air outlets may in fact correspond to the intake ports air VMC devices).
  • the mechanical ventilation system by insufflation which does not create a feeling of cold air flow, provides indoor air quality housing, complies with the rules of hygiene, the incoming air being filtered, and evacuate internal pollutants, such as CO 2 , VOCs and also oppose the rise of natural gases such as radon.
  • Current insufflation ventilation systems can be coupled with sensors for measuring the temperature and hygrometry of the interior air of the housing, allowing, when a relative humidity threshold of this indoor air is reached or exceeded, initiating the insufflation or increasing the flow of air blown to expel this moist air through the plurality of air outlets to limit or decrease the indoor humidity of the housing.
  • the present invention therefore aims to provide a mechanical ventilation installation by insufflation which takes into account the supply of moisture from the outside air.
  • the plant according to the present invention is characterized in that the air intake duct in the insufflation chamber includes filtration means and is connected to a plurality of air inlet ducts, each duct being connected at an air intake mouth picked up at different locations outside the room to be ventilated, (thus possibly, in particular, benefiting from a different environment, for example a different exposure to the sun, from where a different temperature and / or humidity (s)), said inlet duct being equipped with flap (s) tilt (s) or steerable (s) admission of air from one or more mouth (s) ) to the air intake duct, depending on the temperature and / or humidity of the captured outdoor air, with a view to minimizing outside air input with higher absolute humidity to the absolute humidity of the indoor air of said room.
  • the ventilation ventilation installation is thus hydroregulated by requiring the presence of only one incoming air temperature sensor and a single relative humidity sensor of the incoming air. It also allows to select the incoming air according to its absolute humidity. For example, the facility selects air captured near the surface of a south-facing roof rather than an exposure to the North, depending on the season (winter-summer) and / or meteorological parameters.
  • the insufflation module comprises a preselected fan speed variator, the control unit acting on said variable speed drive, each preselected speed corresponding to an insufflation rate, among a plurality of preprogrammed insufflation flow rates.
  • This number of preselected speeds may, for example be in the number of ten, without providing a variation gradient (that is to say without continuous variation) of these speeds hence a very simple operation of this insufflation module, referring, for example, to the number of preselected speeds.
  • the fan may be disposed upstream or downstream of the preheating means of the incoming air and the second temperature and humidity sensors.
  • the "downstream" arrangement is preferred because it allows the preheating means to be in the "suction zone" of the fan, with a greater homogeneity of the heating of this slice of air passing through the preheating zone.
  • the second temperature and humidity sensors are disposed inside said air intake duct. This provides space saving, and further allows a meaningful measurement of the temperature and humidity of the air to the fan to accurately determine the flow of air to be blown.
  • the means for preheating the incoming air, arranged upstream of the second temperature and humidity sensors, can be placed inside said air intake duct or in the insufflation chamber also allowing a gain of place and a gain in efficiency.
  • These preheating means may alternatively be present in the vicinity and around an outer air supply duct, upstream of said air inlet duct.
  • VMC controlled mechanical ventilation system
  • the insufflation takes place continuously, it is only the insufflation rate that is modulated. In this case, we do not have an all or nothing system. It is thus possible permanently to ventilate the housing sufficiently according to the current recommendations.
  • control unit which controls the insufflation air flow therefore also controls the preheating of the air.
  • the air inlet duct connected to the insufflation chamber may also be connected to a recirculation duct of a portion of the interior air of said room.
  • This "recovery" of a portion of the room air that will be mechanically sucked to be forced back to the insufflation chamber allows partial recirculation of the air, especially to benefit from an already heated air and save calories in winter.
  • Such an arrangement is also advantageous for limiting the introduction into the room of very humid air during periods of high atmospheric humidity, for a limited time, while maintaining a permanent circulation of the ambient air.
  • the present invention also relates to a method of mechanical ventilation by continuous insufflation of a room, implementing the installation described above, and comprising the determination of the nominal air flow insufflation corresponding to a predefined rate of renewal room air, the measurement of the temperature and humidity of the incoming air and the indoor air of the room to be ventilated, the determination and comparison of the absolute humidity of the incoming air and the absolute humidity of the indoor air of the room, then, depending on the result of this comparison, the actuation of one of the preselected speeds of the fan corresponding to a pre-programmed inflating air inlet flow greater than or equal to at the nominal blowing air flow, the method being characterized in that the control unit selects the outside air inlet channel as a function of the air temperature at the inlet mouth e corresponding air.
  • This nominal air blowing rate may correspond approximately to the renewal of the entire volume V of air of said room in two hours, or 0.5 V / h.
  • the temperature and humidity measurements are advantageously carried out at regular time intervals (for example every 10 minutes) with an immediate adjustment of the insufflation rate. They can, in addition, be stored over a period (for example a duration of 36 or 48 hours slippery) comprising at least two night periods to check if it is, for example, in the summer season. Indeed, it may be advantageous, in summer during hot weather, to increase the insufflation rate during the night to bring freshness to housing during this period.
  • the ventilation installation 1 is intended to heat a room 22, here a dwelling.
  • the air blowing module disposed, for example in the attic 19 of the dwelling schematically in the figure 1 , comprises at least one external air intake port 10, 11 connected to an air inlet duct 21 connected to an insufflation chamber 2.
  • the insufflation chamber contains a fan 20 and is connected to a blown air duct 3 opening into said room 22 at an insufflation mouth 4.
  • the room is equipped with air outlet vents 24, for example in the form of grids, arranged in the upper part or above the windows 25.
  • air outlet vents 24 for example in the form of grids, arranged in the upper part or above the windows 25.
  • a control box 30 of the insufflation and the first temperature sensors and humidity of the indoor air of the room 22 are arranged in said room.
  • upstream of the fan 20 are placed, preferably in the air inlet duct 21, filtration means 18 (for example a G4 type filter making it possible to retain coarse particles, of size greater than or equal to 5 ⁇ m , and / or a type F7 filter retaining at least 90% of particles of size greater than or equal to about 0.5 ⁇ m), preheating means 29 in the form, here, of a heating resistor, and sensors of temperature and humidity 14 of the air entering the insufflation chamber 2.
  • filtration means 18 for example a G4 type filter making it possible to retain coarse particles, of size greater than or equal to 5 ⁇ m , and / or a type F7 filter retaining at least 90% of particles of size greater than or equal to about 0.5 ⁇ m
  • preheating means 29 in the form, here, of a heating resistor
  • the fan 20 is placed downstream of the filtration means 18, upstream of the preheating means 29 and the second humidity and temperature sensors 14 of the air entering the insufflation chamber 2.
  • a calculation and control unit 12 can control the speed of the fan to control the flow of air blown.
  • the air inlet duct 21 opens at one of its ends into the insufflation chamber 2. Its other end can be connected directly by a sheath 15 to an air intake port 10, 11.
  • this air intake duct 15 can be connected to two air inlet ducts 27, 28, each of these ducts being connected to an air intake opening 10, 11.
  • These inlet ducts air can be disposed on opposite sides of the roof 23, for example the mouth 11 on the face of the roof facing south and the mouth 10 on the roof face 23 exposed to the north.
  • An adjustable flap 9 makes it possible to choose the supply of air, coming either from the mouth 10, or from the mouth 11, or from a mixture of the two in an intermediate position of the flap.
  • the air intake duct 21 is subdivided into a main air supply duct 8 and an air recirculation duct 26 from said room 22.
  • a portion of the air of said room may be taken up by the air intake mouth 5 sucked by the suction means 7, and / or driven by the bypass duct 6 and enter the duct. air intake 21.
  • This air intake at the ceiling 17 allows the recirculation of a portion of the air already heated premises, which allows in winter to limit preheating.
  • the method of mechanical ventilation by insufflation according to the invention makes it possible to ventilate the room 22 continuously with the aid of the installation presented to the Figures 1, 2, 3 and 4 .
  • the air enters, according to the arrow E, by one or both mouths 10, 11, through the channel or channels 27, 28 according to the orientation of the flap 9, and is brought by the sheath 15 to the duct. air inlet 21.
  • this air intake duct 21 are arranged from upstream to downstream a filter 18, a preheating means 29 and a temperature and humidity sensor 14.
  • the blown air circulates in the duct. blown air 3 and then enters the room 22 by the insufflation mouth 4.
  • the calculation and control unit 12 calculates the values of absolute humidity and absolute humidity incoming air, and accordingly drives the fan 20 that is to say selects a preselected speed of said fan greater than or equal to the speed V N.

Description

La présente invention concerne le domaine de la ventilation de locaux, tels que des locaux d'habitation ou de bureaux, et plus particulièrement une installation de ventilation mécanique par insufflation.The present invention relates to the field of ventilation of premises, such as living quarters or offices, and more particularly a mechanical ventilation installation by insufflation.

Pour répondre aux obligations réglementaires de ventilation des logements, on fait très souvent appel actuellement à la ventilation mécanique contrôlée dénommée VMC, à simple flux ou à double flux. Le principe de la VMC est l'extraction, de manière continue ou discontinue, de l'air vicié du logement par un module de ventilation centralisé disposé par exemple dans les combles. Une installation de VMC inclut l'aspiration de l'air intérieur vicié du logement par des bouches d'aspiration situées dans des pièces dites de service (telles que salle de bain, cuisine, sanitaires) puis l'évacuation de cet air vers l'extérieur, cette aspiration générant l'entrée d'air neuf dans les pièces de vie (séjour, chambres) du logement par une pluralité de bouches d'entrée d'air disposées en partie haute des menuiseries ou dans des coffres de volets roulants.To meet the regulatory requirements for ventilation of dwellings, it is very often called currently mechanical ventilation called VMC, single flow or dual flow. The principle of the VMC is the extraction, continuously or discontinuously, of the stale air of the housing by a centralized ventilation module disposed for example in the attic. A VMC installation includes the suction of the exhausted indoor air from the dwelling by suction mouths located in so-called service rooms (such as a bathroom, kitchen, toilets) then the evacuation of this air towards the outside, this aspiration generating the entry of fresh air into the living rooms (living room) of the housing by a plurality of air intake vents disposed in the upper part of the joinery or in shutter boxes.

Plus récemment des installations de VMC hygrorégulées ont été mises au point, elles incluent des membranes sensibles à l'humidité, disposées au niveau d'une ou plusieurs bouches d'aspiration dans une ou plusieurs pièces du logement de manière à déclencher une ouverture plus grande d'une des bouches d'aspiration en cas d'humidité accrue. Le débit d'extraction de l'air vicié est ainsi asservi au degré d'humidité de l'air intérieur, en particulier le débit d'extraction est augmenté lorsque le taux d'humidité intérieur s'élève au-dessus d'un certain seuil, par exemple.More recently, hygroregulated VMC plants have been developed which include moisture-sensitive membranes disposed at one or more suction mouths in one or more rooms of the housing so as to trigger a greater opening. one of the suction mouths in case of increased humidity. The extraction rate of the exhaust air is thus controlled by the degree of humidity of the indoor air, in particular the extraction flow is increased when the indoor humidity level rises above a certain amount. threshold, for example.

Cependant il apparaît que dans un certain nombre de cas, par exemple en cas de périodes orageuses, l'air "neuf" entrant est plus chargé en humidité que l'air intérieur. Il s'ensuit que le taux d'humidité absolue de l'air du logement s'accroît, conduisant à un résultat inverse de celui recherché.However, it appears that in a certain number of cases, for example in stormy periods, incoming "fresh" air is more loaded with moisture than indoor air. It follows that the absolute humidity rate of the air of the house increases, leading to a result opposite to that sought.

De plus aucun chauffage ou préchauffage de l'air entrant n'est prévu, car un chauffage de l'air entrant nécessiterait d'agir sur chacune de bouches d'entée d'air neuf. En hiver, les habitants peuvent être "incommodés" par ces entrées d'air très frais dans les pièces de vie, donnant une sensation de "courant d'air". De même, très peu d'installations prévoient une filtration de l'air entrant, ce qui laisse entrer notamment poussières et pollens.Moreover no heating or preheating of the incoming air is provided, because a heating of the incoming air would require to act on each of the mouths of fresh air intake. In winter, people can be "inconvenienced" by these very fresh air in the living rooms, giving a feeling of "draft". Similarly, very few installations provide for filtration of the incoming air, which notably allows dust and pollens.

On connaît néanmoins de JP 59035750 une installation permettant de sélectionner une entrée d'air côté Sud ou côté Nord selon que l'usager souhaite favoriser le chauffage ou le refroidissement de l'air entrant.We nevertheless know of JP 59035750 an installation to select an air inlet on the south or north side depending on whether the user wishes to promote the heating or cooling of the incoming air.

Par ailleurs, ont été proposés des dispositifs de ventilation par insufflation, dont le principe est inverse de celui de la VMC. Le principe de la ventilation mécanique par insufflation est de prendre l'air à l'extérieur, de le filtrer, de le préchauffer et de l'insuffler dans l'habitation, ce qui place cette dernière en légère surpression. La prise d'air extérieur est généralement réalisée en un seul endroit, par exemple au niveau des toits. La filtration est centralisée ainsi que le préchauffage. Ainsi, l'air filtré et éventuellement préchauffé peut être insufflé dans les pièces de vie en un ou plusieurs endroits de l'habitation. L'air ressort ensuite de l'habitation par une pluralité de sorties d'air disposées, par exemple, en partie haute des menuiseries ou dans des coffres de volets roulants (ces sorties d'air pouvant correspondre en fait aux bouches d'entrée d'air des dispositifs VMC).In addition, ventilation ventilation devices have been proposed, the principle of which is the opposite of that of the VMC. The principle of mechanical ventilation by insufflation is to take the air outside, to filter it, to preheat it and to insufflate it in the house, which places it in slight overpressure. The outside air intake is usually carried out in one place, for example at roof level. Filtration is centralized as well as preheating. Thus, the filtered air and possibly preheated can be blown into the living rooms in one or more places of the house. The air then emerges from the dwelling through a plurality of air outlets arranged, for example, in the upper part of the joinery or in roller shutter boxes (these air outlets may in fact correspond to the intake ports air VMC devices).

Le système de ventilation mécanique par insufflation, qui ne crée pas de sensation de flux d'air froid, permet d'obtenir un air intérieur du logement de qualité, conforme aux règles d'hygiène, l'air entrant étant filtré, et d'évacuer les polluants intérieurs, tels que le CO2, les COV et aussi de s'opposer aux remontées des gaz naturels comme le radon.The mechanical ventilation system by insufflation, which does not create a feeling of cold air flow, provides indoor air quality housing, complies with the rules of hygiene, the incoming air being filtered, and evacuate internal pollutants, such as CO 2 , VOCs and also oppose the rise of natural gases such as radon.

Les systèmes de ventilation par insufflation actuels peuvent être couplés à des sondes de mesure de la température et de l'hygrométrie de l'air intérieur du logement, permettant, lorsqu'un seuil d'humidité relative de cet air intérieur est atteint ou dépassé, de mettre en route l'insufflation ou d'augmenter le débit d'air insufflé en vue d'expulser cet air humide par la pluralité de sorties d'air afin de limiter ou de faire décroître le taux d'humidité intérieur du logement.Current insufflation ventilation systems can be coupled with sensors for measuring the temperature and hygrometry of the interior air of the housing, allowing, when a relative humidity threshold of this indoor air is reached or exceeded, initiating the insufflation or increasing the flow of air blown to expel this moist air through the plurality of air outlets to limit or decrease the indoor humidity of the housing.

Cependant, jusqu'à présent, aucun système de ventilation par insufflation ne tient compte de l'hygrométrie de l'air extérieur au logement.However, until now, no ventilation ventilation system takes into account the hygrometry of the air outside the dwelling.

La ventilation mécanique par insufflation est efficace lorsque l'humidité atmosphérique est faible. L'air intérieur chargé en humidité étant remplacé par de l'air plus sec.Mechanical ventilation by insufflation is effective when atmospheric humidity is low. Moisture-laden indoor air is replaced by drier air.

Par contre, lors de périodes à forte hygrométrie atmosphérique (périodes orageuses par exemple), l'air extérieur ambiant ainsi que l'air intérieur sont chargés en humidité. Lorsque le seuil préprogrammé d'humidité relative dans le logement est atteint ou dépassé, le débit d'insufflation est augmenté ce qui introduit de l'air très humide dans le logement et, en conséquence, augmente encore le taux d'humidité dans ledit logement.On the other hand, during periods of high atmospheric hygrometry (stormy periods for example), ambient outside air and indoor air are loaded with moisture. When the preprogrammed threshold of relative humidity in the housing is reached or exceeded, the insufflation rate is increased which introduces very humid air into the housing and, consequently, further increases the humidity level in said housing .

Ceci conduit à un résultat tout à fait inverse de celui recherché. En conséquence, lors de périodes à forte humidité atmosphérique, l'utilisateur, au fait de ces problèmes, n'a le choix -s'il peut intervenir sur l'installation- que d'interrompre l'entrée d'air et donc la ventilation. Ceci va à l'encontre de l'objectif d'un renouvellement permanent de l'air du logement.This leads to a result quite opposite to that sought. Consequently, during periods of high atmospheric humidity, the user, aware of these problems, has no choice - if he can intervene on the installation - that to interrupt the entry of air and therefore the ventilation. This goes against the goal of a permanent renewal of the air of housing.

La présente invention a donc pour but de proposer une installation de ventilation mécanique par insufflation qui tienne compte de l'apport d'humidité provenant de l'air extérieur.The present invention therefore aims to provide a mechanical ventilation installation by insufflation which takes into account the supply of moisture from the outside air.

Par ailleurs, les préconisations actuelles de ventilation des logements imposent un renouvellement complet de l'air intérieur toutes les deux heures. En conséquence, il est nécessaire de prévoir une installation de ventilation qui fonctionne quasiment en continu, et donc en toutes circonstances, quelque soit les conditions atmosphériques extérieures au local à ventiler.In addition, current recommendations for ventilation of homes require a complete renewal of indoor air every two hours. Consequently, it is necessary to provide a ventilation system that operates almost continuously, and therefore under all circumstances, whatever the weather outside the room to ventilate.

A cet effet, la présente invention propose une installation de ventilation mécanique par insufflation en continu d'un local, tel qu'un local d'habitation ou de bureaux, permettant le renouvèlement permanent de l'air dudit local, correspondant au brevet EP 1.696.184 et comprenant :

  • un module d'insufflation d'air comportant au moins une bouche d'entrée d'air extérieur audit local, connectée à un conduit d'entrée d'air relié à une chambre d'insufflation renfermant un ventilateur et incluant des moyens de préchauffage de l'air entrant, au moins un conduit d'air insufflé et au moins une bouche d'insufflation de l'air dans ledit local,
  • des premiers capteurs d'humidité relative et des premiers capteurs de température, disposés à l'intérieur du local à ventiler, permettant de mesurer respectivement l'humidité relative et la température de l'air intérieur dudit local,
  • des seconds capteurs d'humidité relative et des seconds capteurs de température, disposés en aval des moyens de préchauffage, permettant de mesurer respectivement l'humidité relative et la température de l'air entrant,
  • une unité de calcul et de commande contrôlant le débit d'air d'insufflation, en fonction d'une part de l'humidité et de la température l'air dudit local à ventiler et d'autre part de l'humidité et de la température de l'air entrant, l'humidité prise en compte pour commander le débit d'air d'insufflation étant l'humidité absolue, calculée à partir des données d'humidité relative et de température mesurées.
For this purpose, the present invention proposes a mechanical ventilation installation by continuous insufflation of a room, such as a living room or offices, allowing the permanent renewal of the air of said room, corresponding to the patent EP 1.696.184 and including:
  • an air insufflation module comprising at least one air inlet mouth outside said room, connected to an air inlet duct connected to a blower-equipped blowing chamber and including means for preheating the air. the incoming air, at least one blown air duct and at least one air blowing mouth in said room,
  • first relative humidity sensors and first temperature sensors, arranged inside the room to be ventilated, for respectively measuring the relative humidity and the indoor air temperature of said room,
  • second relative humidity sensors and second temperature sensors, disposed downstream of the preheating means, for respectively measuring the relative humidity and the temperature of the incoming air,
  • a calculation and control unit controlling the insufflation air flow rate, as a function of the humidity and the temperature of the air of said room to be ventilated and of the humidity and temperature of the incoming air, the humidity taken into account to control the insufflation air flow rate being the absolute humidity, calculated from the measured relative humidity and temperature data.

L'installation selon la présente invention est caractérisée en ce que le conduit d'entrée d'air dans la chambre d'insufflation inclut des moyens de filtration et est relié à une pluralité de canaux d'entrée d'air, chaque canal étant connecté à une bouche d'entrée de l'air capté en des endroits différents à l'extérieur du local à ventiler, (pouvant ainsi, notamment, bénéficier d'un environnement différent, par exemple d'une exposition au soleil différente, d'où une température et/ou une humidité différente(s)), ledit conduit d'entrée étant équipé de volet(s) basculable(s) ou orientable(s) d'admission de l'air issu d'une ou plusieurs bouche(s) d'entrée jusqu'au conduit d'entrée d'air, en fonction de la température et/ou de l'humidité de l'air extérieur capté, en vue de minimiser l'entrée d'air extérieur présentant une humidité absolue supérieure à l'humidité absolue de l'air intérieur dudit local.The plant according to the present invention is characterized in that the air intake duct in the insufflation chamber includes filtration means and is connected to a plurality of air inlet ducts, each duct being connected at an air intake mouth picked up at different locations outside the room to be ventilated, (thus possibly, in particular, benefiting from a different environment, for example a different exposure to the sun, from where a different temperature and / or humidity (s)), said inlet duct being equipped with flap (s) tilt (s) or steerable (s) admission of air from one or more mouth (s) ) to the air intake duct, depending on the temperature and / or humidity of the captured outdoor air, with a view to minimizing outside air input with higher absolute humidity to the absolute humidity of the indoor air of said room.

L'installation de ventilation par insufflation est ainsi hydrorégulée en ne nécessitant la présence que d'un seul capteur de température de l'air entrant et un seul capteur d'humidité relative de l'air entrant. Elle permet également de sélectionner l'air entrant en fonction de son humidité absolue. Par exemple, l'installation permet de sélectionner l'air capté à proximité de la surface d'un toit exposé au Sud plutôt qu'une exposition au Nord, selon la saison (hiver-été) et/ou les paramètres météorologiques.The ventilation ventilation installation is thus hydroregulated by requiring the presence of only one incoming air temperature sensor and a single relative humidity sensor of the incoming air. It also allows to select the incoming air according to its absolute humidity. For example, the facility selects air captured near the surface of a south-facing roof rather than an exposure to the North, depending on the season (winter-summer) and / or meteorological parameters.

De préférence, le module d'insufflation comporte un variateur de vitesses préselectionnées du ventilateur, l'unité de commande agissant sur ledit variateur de vitesse, chaque vitesse préselectionnée correspondant à un débit d'insufflation, parmi une pluralité de débits d'insufflation préprogrammés.Preferably, the insufflation module comprises a preselected fan speed variator, the control unit acting on said variable speed drive, each preselected speed corresponding to an insufflation rate, among a plurality of preprogrammed insufflation flow rates.

Ce nombre de vitesses préselectionnées peut, par exemple être au nombre d'une dizaine, sans prévoir de gradient de variation (c'est-à-dire sans variation continue) de ces vitesses d'où un fonctionnement très simple de ce module d'insufflation, en se référant, par exemple, au numéro des vitesses préselectionnées.This number of preselected speeds may, for example be in the number of ten, without providing a variation gradient (that is to say without continuous variation) of these speeds hence a very simple operation of this insufflation module, referring, for example, to the number of preselected speeds.

Le ventilateur peut être disposé en amont ou en aval des moyens de préchauffage de l'air entrant et des seconds capteurs de température et d'humidité. La disposition "aval" est préférée, car elle permet aux moyens de préchauffage de se trouver dans la "zone d'aspiration" du ventilateur, avec une plus grande homogénéité du chauffage de cette tranche d'air traversant la zone de préchauffage.The fan may be disposed upstream or downstream of the preheating means of the incoming air and the second temperature and humidity sensors. The "downstream" arrangement is preferred because it allows the preheating means to be in the "suction zone" of the fan, with a greater homogeneity of the heating of this slice of air passing through the preheating zone.

De préférence, les seconds capteurs de température et d'humidité sont disposés à l'intérieur dudit conduit d'entrée d'air. Ceci confère un gain de place, et en outre permet une mesure pertinente de la température et de l'humidité de l'air arrivant au ventilateur pour déterminer avec précision le débit d'air à insuffler.Preferably, the second temperature and humidity sensors are disposed inside said air intake duct. This provides space saving, and further allows a meaningful measurement of the temperature and humidity of the air to the fan to accurately determine the flow of air to be blown.

Les moyens de préchauffage de l'air entrant, disposés en amont des seconds capteurs de température et d'humidité, peuvent être placés à l'intérieur dudit conduit d'entrée d'air ou dans la chambre d'insufflation permettant également un gain de place et un gain d'efficacité. Ces moyens de préchauffage peuvent, en variante, être présents à proximité et autour d'une gaine d'amenée de l'air extérieur, en amont dudit conduit d'entrée d'air.The means for preheating the incoming air, arranged upstream of the second temperature and humidity sensors, can be placed inside said air intake duct or in the insufflation chamber also allowing a gain of place and a gain in efficiency. These preheating means may alternatively be present in the vicinity and around an outer air supply duct, upstream of said air inlet duct.

Par rapport à une installation de ventilation mécanique contrôlée (VMC), une filtration et un préchauffage de l'air entrant peuvent ainsi être mis en place en un seul endroit puisque l'on a ici un conduit unique d'entrée de l'air, dans la chambre d'insufflation.Compared to a controlled mechanical ventilation system (VMC), a filtration and a preheating of the incoming air can thus be set up in one place since there is here a single duct of air intake, in the insufflation chamber.

L'insufflation a lieu en continu, c'est uniquement le débit d'insufflation qui est modulé. On n'a pas, dans ce cas, un système tout ou rien. Il est ainsi possible en permanence de ventiler suffisamment le logement selon les préconisations actuelles.The insufflation takes place continuously, it is only the insufflation rate that is modulated. In this case, we do not have an all or nothing system. It is thus possible permanently to ventilate the housing sufficiently according to the current recommendations.

De préférence, l'unité de commande qui contrôle le débit d'air d'insufflation commande donc également le préchauffage de l'air.Preferably, the control unit which controls the insufflation air flow therefore also controls the preheating of the air.

Selon une variante de réalisation, le conduit d'entrée d'air relié à la chambre d'insufflation peut également être connecté à un conduit de recirculation d'une partie de l'air intérieur dudit local. Cette "reprise" d'une partie de l'air du local qui va être aspirée mécaniquement pour être refoulée vers la chambre d'insufflation permet une recirculation partielle de l'air, notamment pour bénéficier d'un air déjà réchauffé et économiser ainsi des calories en hiver. Un tel agencement est également avantageux pour limiter l'introduction dans le local d'air très humide en période de forte humidité atmosphérique, pendant une durée limitée, tout en maintenant une circulation permanente de l'air ambiant.According to an alternative embodiment, the air inlet duct connected to the insufflation chamber may also be connected to a recirculation duct of a portion of the interior air of said room. This "recovery" of a portion of the room air that will be mechanically sucked to be forced back to the insufflation chamber allows partial recirculation of the air, especially to benefit from an already heated air and save calories in winter. Such an arrangement is also advantageous for limiting the introduction into the room of very humid air during periods of high atmospheric humidity, for a limited time, while maintaining a permanent circulation of the ambient air.

La présente invention concerne également un procédé de ventilation mécanique par insufflation en continu d'un local, mettant en oeuvre l'installation décrite ci-dessus, et comprenant la détermination du débit d'air nominal d'insufflation correspondant à un taux prédéfini de renouvèlement de l'air du local, la mesure de la température et de l'humidité de l'air entrant et de l'air intérieur du local à ventiler, la détermination et la comparaison de l'humidité absolue de l'air entrant et de l'humidité absolue de l'air intérieur du local, puis, en fonction du résultat de cette comparaison, l'actionnement d'une des vitesses préselectionnées du ventilateur correspondant à un débit d'entrée d'air d'insufflation préprogrammé supérieur ou égal au débit d'air nominal d'insufflation, le procédé étant caractérisé en ce que l'unité de commande sélectionne le canal d'entrée d'air extérieur en fonction de la température de l'air au niveau de la bouche d'entrée d'air correspondante. Ce débit d'air nominal d'insufflation peut correspondre approximativement au renouvèlement de la totalité du volume V d'air dudit local en deux heures, soit 0,5 V/h.The present invention also relates to a method of mechanical ventilation by continuous insufflation of a room, implementing the installation described above, and comprising the determination of the nominal air flow insufflation corresponding to a predefined rate of renewal room air, the measurement of the temperature and humidity of the incoming air and the indoor air of the room to be ventilated, the determination and comparison of the absolute humidity of the incoming air and the absolute humidity of the indoor air of the room, then, depending on the result of this comparison, the actuation of one of the preselected speeds of the fan corresponding to a pre-programmed inflating air inlet flow greater than or equal to at the nominal blowing air flow, the method being characterized in that the control unit selects the outside air inlet channel as a function of the air temperature at the inlet mouth e corresponding air. This nominal air blowing rate may correspond approximately to the renewal of the entire volume V of air of said room in two hours, or 0.5 V / h.

Les mesures de température et d'humidité sont avantageusement effectuées à des intervalles de temps réguliers (par exemple toutes les 10 minutes) avec un ajustement immédiat du débit d'insufflation. Elles peuvent, en outre, être mémorisées sur une durée (par exemple une durée de 36 ou 48 heures glissante) comprenant au moins deux périodes nocturnes pour vérifier si on se situe, par exemple, en saison d'été. En effet, il peut être avantageux, en été lors de fortes chaleurs, d'augmenter le débit d'insufflation pendant la nuit pour apporter de la fraîcheur au logement durant cette période.The temperature and humidity measurements are advantageously carried out at regular time intervals (for example every 10 minutes) with an immediate adjustment of the insufflation rate. They can, in addition, be stored over a period (for example a duration of 36 or 48 hours slippery) comprising at least two night periods to check if it is, for example, in the summer season. Indeed, it may be advantageous, in summer during hot weather, to increase the insufflation rate during the night to bring freshness to housing during this period.

Selon des caractéristiques avantageuses du procédé de l'invention :

  • en cas de compétition entre la température et l'humidité, l'unité de commande privilégie la température, c'est-à-dire la prise en compte de la température est prioritaire ;
  • lorsque le conduit d'entrée d'air est connecté à un conduit de recirculation d'une partie de l'air intérieur audit local, une fraction de l'air intérieur du local est recyclée dans la chambre de ventilation, par l'intermédiaire dudit conduit d'entrée d'air.
According to advantageous features of the process of the invention:
  • in case of competition between temperature and humidity, the control unit favors the temperature, that is to say the consideration of the temperature takes precedence;
  • when the air intake duct is connected to a recirculation duct of a portion of the interior air to said room, a fraction of the interior air of the room is recycled in the ventilation chamber, via said air intake duct.

D'autres avantages apparaîtront à la lumière de la description ci-après d'exemples non-limitatifs de réalisation de l'installation de l'invention, illustrés par les figures annexées dans lesquelles :

  • La figure 1 schématise un local d'habitation dans lequel est disposée une installation de ventilation mécanique par insufflation selon un mode de réalisation de la présente invention ;
  • La figure 2 détaille la partie supérieure de ladite installation de la figure 1 au niveau du toit de l'habitation ;
  • La figure 3 détaille la partie de l'installation de la figure 1 disposée dans les combles de l'habitation, et plus particulièrement incluant le conduit d'entrée d'air et la chambre d'insufflation, selon une première variante de l'invention ;
  • La figure 4 détaille la même partie de l'installation que la figure 3, selon une seconde variante de l'invention.
Other advantages will become apparent in the light of the following description of non-limiting examples of embodiment of the installation of the invention, illustrated by the appended figures in which:
  • The figure 1 schematically a living room in which is arranged a mechanical ventilation installation by insufflation according to an embodiment of the present invention;
  • The figure 2 details the upper part of the said installation of the figure 1 at the roof level of the dwelling;
  • The figure 3 details the part of the installation of the figure 1 disposed in the attic of the dwelling, and more particularly including the air inlet duct and the insufflation chamber, according to a first variant of the invention;
  • The figure 4 details the same part of the installation as the figure 3 according to a second variant of the invention.

En se référant aux figures, l'installation 1 de ventilation par insufflation, selon la présente invention, est destinée à chauffer un local 22, ici d'une habitation. Le module d'insufflation d'air disposé, par exemple dans les combles 19 de l'habitation schématisée à la figure 1, comporte au moins une bouche d'entrée d'air extérieure 10, 11 connectée à un conduit d'entrée d'air 21 relié à une chambre d'insufflation 2. La chambre d'insufflation renferme un ventilateur 20 et est connectée à un conduit d'air insufflé 3 débouchant dans ledit local 22 au niveau d'une bouche d'insufflation 4.Referring to the figures, the ventilation installation 1 according to the present invention is intended to heat a room 22, here a dwelling. The air blowing module disposed, for example in the attic 19 of the dwelling schematically in the figure 1 , comprises at least one external air intake port 10, 11 connected to an air inlet duct 21 connected to an insufflation chamber 2. The insufflation chamber contains a fan 20 and is connected to a blown air duct 3 opening into said room 22 at an insufflation mouth 4.

Le local est équipé de bouches de sortie d'air 24, par exemple sous forme de grilles, disposées dans la partie haute ou au-dessus des fenêtres 25. Ainsi l'air entrant selon la flèche E au niveau du toit 23 est insufflé dans le local 22 et ressort de celui-ci selon les flèches S en chassant l'air vicié dudit local 22.The room is equipped with air outlet vents 24, for example in the form of grids, arranged in the upper part or above the windows 25. Thus, the incoming air according to the arrow E at the roof 23 is blown into the room. the room 22 and spring thereof according to the arrows S by removing the stale air of said room 22.

Un boîtier de commande 30 de l'insufflation et les premiers capteurs de température et d'humidité de l'air intérieur du local 22 sont disposés dans ledit local.A control box 30 of the insufflation and the first temperature sensors and humidity of the indoor air of the room 22 are arranged in said room.

Selon la variante présentée à la figure 3, en amont du ventilateur 20 sont placés, de préférence dans le conduit d'entrée d'air 21, des moyens de filtration 18 (par exemple un filtre de type G4 permettant de retenir des particules grossières, de taille supérieure ou égale à 5 µm, et/ou un filtre de type F7 retenant au moins 90 % des particules de taille supérieure ou égale à 0,5 µm environ), des moyens de préchauffage 29 sous la forme, ici, d'une résistance chauffante, et des capteurs de température et d'humidité 14 de l'air entrant dans la chambre d'insufflation 2.According to the variant presented at figure 3 , upstream of the fan 20 are placed, preferably in the air inlet duct 21, filtration means 18 (for example a G4 type filter making it possible to retain coarse particles, of size greater than or equal to 5 μm , and / or a type F7 filter retaining at least 90% of particles of size greater than or equal to about 0.5 μm), preheating means 29 in the form, here, of a heating resistor, and sensors of temperature and humidity 14 of the air entering the insufflation chamber 2.

Selon la variante présentée à la figure 4, le ventilateur 20 est placé en aval des moyens de filtration 18, en amont des moyens de préchauffage 29 et des seconds capteurs d'humidité et de température 14 de l'air entrant dans la chambre d'insufflation 2.According to the variant presented at figure 4 , the fan 20 is placed downstream of the filtration means 18, upstream of the preheating means 29 and the second humidity and temperature sensors 14 of the air entering the insufflation chamber 2.

Disposée également dans la chambre d'insufflation 2, une unité de calcul et de commande 12 permet de piloter la vitesse du ventilateur afin de commander le débit d'air insufflé.Also provided in the insufflation chamber 2, a calculation and control unit 12 can control the speed of the fan to control the flow of air blown.

Le conduit d'entrée d'air 21 débouche à l'une de ses extrémités dans la chambre d'insufflation 2. Son autre extrémité peut être reliée directement par une gaine 15 à une bouche d'entrée d'air 10, 11.The air inlet duct 21 opens at one of its ends into the insufflation chamber 2. Its other end can be connected directly by a sheath 15 to an air intake port 10, 11.

Selon le mode de réalisation représenté à la figure 2, cette gaine d'arrivée d'air 15 peut être reliée à deux canaux d'entrée d'air 27, 28, chacun de ces canaux étant connecté à une bouche d'entrée d'air 10, 11. Ces bouches d'entrée d'air peuvent être disposées sur des faces opposées du toit 23, par exemple la bouche 11 sur la face du toit exposée au Sud et la bouche 10 sur la face du toit 23 exposée au Nord.According to the embodiment shown in figure 2 this air intake duct 15 can be connected to two air inlet ducts 27, 28, each of these ducts being connected to an air intake opening 10, 11. These inlet ducts air can be disposed on opposite sides of the roof 23, for example the mouth 11 on the face of the roof facing south and the mouth 10 on the roof face 23 exposed to the north.

Un volet 9 orientable permet de choisir l'alimentation d'air, provenant soit de la bouche 10, soit de la bouche 11, soit d'un mélange des deux dans une position intermédiaire du volet.An adjustable flap 9 makes it possible to choose the supply of air, coming either from the mouth 10, or from the mouth 11, or from a mixture of the two in an intermediate position of the flap.

Selon une variante de réalisation de la présente invention, représentée à la figure 3, le conduit d'entrée d'air 21 est subdivisé en un conduit principal d'amenée d'air 8 et un conduit de recirculation d'air 26 provenant dudit local 22.According to an alternative embodiment of the present invention, represented in FIG. figure 3 , the air intake duct 21 is subdivided into a main air supply duct 8 and an air recirculation duct 26 from said room 22.

En effet, une partie de l'air de ce dit local peut être reprise par la bouche de reprise d'air 5 aspirée par le moyen d'aspiration 7, et/ou entraînée par le conduit de dérivation 6 et pénétrer dans le conduit d'entrée d'air 21. Cette reprise d'air au niveau du plafond 17 permet la recirculation d'une partie de l'air du local déjà chauffée, ce qui permet en hiver de limiter le préchauffage.Indeed, a portion of the air of said room may be taken up by the air intake mouth 5 sucked by the suction means 7, and / or driven by the bypass duct 6 and enter the duct. air intake 21. This air intake at the ceiling 17 allows the recirculation of a portion of the air already heated premises, which allows in winter to limit preheating.

Le procédé de ventilation mécanique par insufflation selon l'invention permet de ventiler en continu le local 22 à l'aide de l'installation présentée aux figures 1, 2, 3 et 4.The method of mechanical ventilation by insufflation according to the invention makes it possible to ventilate the room 22 continuously with the aid of the installation presented to the Figures 1, 2, 3 and 4 .

Le fonctionnement est le suivant :

  • Le ventilateur 20 fonctionne en permanence selon des vitesses préprogrammées, par exemple des vitesses allant de 1 à 10. Selon le volume du local 22 à ventiler, on détermine la vitesse nominale VN du ventilateur correspondant à un renouvellement de l'air du local, par exemple, toutes les deux heures selon des préconisations actuelles, choisie parmi l'une de ces 10 vitesses préprogrammées.
The operation is as follows:
  • The fan 20 operates continuously according to preprogrammed speeds, for example speeds ranging from 1 to 10. Depending on the volume of the room 22 to be ventilated, the nominal speed V N of the fan corresponding to a renewal of the room air is determined, for example, every two hours according to current recommendations, chosen from one of these 10 preprogrammed speeds.

L'air entre, selon la flèche E, par l'une ou les deux bouches 10, 11, traverse le ou les canaux 27, 28 selon l'orientation du volet 9, et est amené par la gaine 15 jusqu'au conduit d'entrée d'air 21.The air enters, according to the arrow E, by one or both mouths 10, 11, through the channel or channels 27, 28 according to the orientation of the flap 9, and is brought by the sheath 15 to the duct. air inlet 21.

Selon le mode de réalisation de l'invention représenté à la figure 3, dans ce conduit d'entrée d'air 21 sont disposés de l'amont vers l'aval un filtre 18, un moyen de préchauffage 29 puis un capteur de température et d'humidité 14. L'air insufflé circule dans le conduit d'air insufflé 3 puis pénètre dans le local 22 par la bouche d'insufflation 4.According to the embodiment of the invention shown in figure 3 in this air intake duct 21 are arranged from upstream to downstream a filter 18, a preheating means 29 and a temperature and humidity sensor 14. The blown air circulates in the duct. blown air 3 and then enters the room 22 by the insufflation mouth 4.

Cette insufflation d'air dans le local 22 crée une légère surpression dans ce local et chasse l'air vicié par les sorties 24 selon les flèches S.This insufflation of air in the room 22 creates a slight excess pressure in this room and flushes the stale air by the outlets 24 according to the arrows S.

En fonction des résultats des mesures des premiers capteurs de températures et d'humidité relative (H.R.) 13, situés dans le local 22, et des résultats des mesures de température et d'humidité relative (H.R.) des seconds capteurs de température et d'humidité 14, situés dans le conduit d'entrée d'air 21 en aval de la résistance chauffante et en amont du ventilateur 20 (cf. figure 3), l'unité de calcul et de commande 12 calcule les valeurs d'humidité absolue intérieure et d'humidité absolue de l'air entrant, et pilote en conséquence le ventilateur 20 c'est-à-dire choisit une vitesse présélectionnée dudit ventilateur supérieure ou égale à la vitesse VN.According to the results of the measurements of the first temperature and relative humidity (RH) sensors 13, located in the room 22, and the results of the temperature and relative humidity (RH) measurements of the second temperature and humidity sensors. 14, located in the air inlet duct 21 downstream of the heating resistor and upstream of the fan 20 (cf. figure 3 ), the calculation and control unit 12 calculates the values of absolute humidity and absolute humidity incoming air, and accordingly drives the fan 20 that is to say selects a preselected speed of said fan greater than or equal to the speed V N.

Par exemple, en fonction des résultats des températures et des valeurs d'humidité, la gestion de l'installation 1 pourra être effectuée de la façon suivante :

  • 1er cas : le taux d'H.R. du local est supérieur à 60%,
    • si l'humidité absolue de l'air entrant est inférieure à l'humidité absolue de l'air intérieur, le boîtier de gestion va augmenter d'une graduation au-dessus de la vitesse nominale VN
    • si l'humidité absolue de l'air entrant est supérieure à l'humidité absolue de l'air intérieur, le boîtier va maintenir ou diminuer la vitesse nominale initiale pour ne pas augmenter le taux d'humidité intérieure tout en maintenant un renouvellement de l'air
  • 2ème cas : le taux d'H.R. du local est supérieur à 71%,
    • si l'humidité absolue de l'air entrant est inférieure à l'humidité absolue de l'air intérieur, le boîtier de gestion va augmenter la vitesse de deux graduations au-delà de VN
    • si l'humidité absolue de l'air entrant est supérieure à l'humidité absolue de l'air intérieur, le boîtier va maintenir la vitesse à la vitesse nominale initiale pour ne pas augmenter le taux d'humidité intérieure tout en maintenant un renouvellement de l'air
  • 3ème cas : le taux d'H.R. du local est inférieur à 40%,
    • le boîtier de gestion va diminuer la vitesse du ventilateur d'une graduation sans jamais descendre en dessous de la vitesse VN.
  • 4ème cas : le taux d'H.R. du local est inférieur à 29%,
    • le boîtier de gestion va diminuer la vitesse du ventilateur de deux graduations sans jamais descendre en dessous de la vitesse VN.
For example, depending on the results of the temperatures and humidity values, the management of the installation 1 can be carried out as follows:
  • 1st case: the HR rate of the local is greater than 60%,
    • if the absolute humidity of the incoming air is lower than the absolute humidity of the indoor air, the management unit will increase by one graduation above the nominal speed V N
    • if the absolute humidity of the incoming air is greater than the absolute humidity of the indoor air, the housing will maintain or reduce the initial nominal speed so as not to increase the indoor humidity level while maintaining a renewal of the 'air
  • 2nd case: the HR rate of the local is greater than 71%,
    • if the absolute humidity of the incoming air is lower than the absolute humidity of the indoor air, the management unit will increase the speed of two graduations beyond V N
    • if the absolute humidity of the incoming air is greater than the absolute humidity of the indoor air, the housing will maintain the speed at the initial nominal speed so as not to increase the indoor humidity level while maintaining a renewal of the air
  • 3rd case: the rate of the local HR is less than 40%
    • the management box will decrease the fan speed of a graduation without ever going below the speed V N.
  • 4th case: the rate of the local HR is less than 29%
    • the management box will decrease the fan speed by two graduations without ever going below the speed V N.

Claims (10)

  1. A mechanical ventilation facility (1) by continuous insufflation of a premises (22), such as a residential or office premises, enabling continuous renewal of the air in said premises, comprising:
    - an air insufflation module including at least one intake nozzle of air from outside said premises (10, 11), connected to an air intake duct (21) connected to an insufflation chamber (2) containing a fan (20) and means (29) for preheating the incoming air, at least one blown air duct (3) and at least one nozzle (4) for blowing air into said premises,
    - first relative humidity sensors and first temperature sensors (13), positioned inside the premises (22) to be ventilated, making it possible to measure the relative humidity and the temperature of the air inside said premises, respectively,
    - second relative humidity sensors and second temperature sensors (14), positioned downstream from the preheating means (29), making it possible to measure the relative humidity and the temperature of the incoming air, respectively,
    - a computing and control unit (12) monitoring the insufflation air flow rate, on the one hand based on the humidity and temperature of the air of said premises to be ventilated, and on the other hand the humidity and temperature of the incoming air, the humidity taken into account to control the insufflation air flow rate being the absolute humidity, computed from measured relative humidity and temperature data,
    characterized in that the air intake duct (21) in the insufflation chamber (2) includes filtration means (18) and is connected to a plurality of air intake channels (27, 28), each channel being connected to an intake nozzle for the air (10, 11) captured in different locations outside the premises (22) to be ventilated, and being equipped with tiltable or steerable intake flap(s) (9), for the air coming from one or several intake nozzle(s) up to the air intake duct (21), based on the temperature and/or humidity of the captured outside air, in order to minimize the intake of outside air having an absolute humidity higher than the absolute humidity of the air inside said premises.
  2. The facility (1) according to claim 1, characterized in that the insufflation module includes a variable speed switch for preselected speeds of the fan, the control unit acting on said variable speed switch, each preselected speed corresponding to an insufflation flow rate, from among a plurality of preprogrammed insufflation flow rates.
  3. The facility according to claims 1 or 2, characterized in that the fan (20) is positioned downstream from the preheating means (29) for the incoming air and second temperature and humidity sensors (14).
  4. The facility (1) according to any one of the preceding claims, characterized in that the second temperature and humidity sensors (14) are positioned inside said air intake duct (21).
  5. The facility (1) according to claim 4, characterized in that the means (29) for preheating the incoming air are positioned inside said air intake duct (21), upstream from the second temperature and humidity sensors (14).
  6. The facility (1) according to any one of the preceding claims, characterized in that the air intake duct (21) connected to the insufflation chamber (2) is also connected to a recirculation duct (26) for part of the air inside said premises.
  7. A method of mechanical ventilation by continuous insufflation of a premises, implemented by the facility (1) according to any one of the preceding claims, comprising determining the nominal insufflation air flow rate corresponding to a predefined renewal rate of the local air, measuring the temperature and humidity of the incoming air and the air inside the premises to be ventilated, determining and comparing the absolute humidity of the incoming air and the absolute humidity of the air inside the premises, then, based on the result of this comparison, actuating one of the preselected speeds of the fan corresponding to a predetermined insufflation air intake flow rate greater than or equal to the nominal insufflation air flow rate, characterized in that the control unit selects the outside air intake channel based on the temperature of the air at the corresponding air intake nozzle.
  8. The method according to claim 7, characterized in that the measurements are done at regular time intervals with an immediate adjustment of the insufflation flow rate.
  9. The method according to one of claims 7 or 8, characterized in that, in case of competition between the temperature and humidity, the control unit favors the temperature.
  10. The method according to one of claims 7 to 9, depending on claim 6, characterized in that a fraction of the air inside the premises is recycled in the insufflation chamber (2), via said air intake duct (21).
EP11184678.8A 2010-10-13 2011-10-11 Mechanical ventilation facility by moisture-adjusted insufflation and associated method Active EP2442041B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1058317A FR2966226B1 (en) 2010-10-13 2010-10-13 MECHANICAL VENTILATION INSTALLATION BY HYGRO-MOLDED INSUFFLATION AND METHOD THEREOF
FR1159086A FR2966227B1 (en) 2010-10-13 2011-10-07 MECHANICAL VENTILATION INSTALLATION BY HYGRO-MOLDED INSUFFLATION AND METHOD THEREOF

Publications (2)

Publication Number Publication Date
EP2442041A1 EP2442041A1 (en) 2012-04-18
EP2442041B1 true EP2442041B1 (en) 2017-07-12

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Application Number Title Priority Date Filing Date
EP11184678.8A Active EP2442041B1 (en) 2010-10-13 2011-10-11 Mechanical ventilation facility by moisture-adjusted insufflation and associated method

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EP (1) EP2442041B1 (en)
ES (1) ES2643149T3 (en)
FR (1) FR2966227B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3038967B1 (en) * 2015-07-16 2017-07-21 Atlantic Climatisation & Ventilation SYSTEM FOR HEATING AND PRODUCTION OF HOT WATER IN A HOUSE
CN107449096A (en) * 2017-08-10 2017-12-08 广州天翔建设工程有限公司 A kind of Intelligent indoor VMC

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051016B2 (en) * 1982-08-23 1985-11-12 サンデン株式会社 Natural heat absorption device that can also be used as a heat dissipation device
FR2708992B1 (en) * 1993-08-10 1995-11-24 Cerga Method and device for adjusting the section of a ventilation air inlet in a room.
DE20216334U1 (en) * 2002-10-22 2003-12-04 Meltem Wärmerückgewinnung GmbH & Co. KG Air exchange system for ventilation of at least one room in a building
US7222494B2 (en) * 2004-01-07 2007-05-29 Honeywell International Inc. Adaptive intelligent circulation control methods and systems
US7758408B2 (en) * 2006-06-01 2010-07-20 Ventotech Ab Dehumidifying ventilation and regulation of airflow in enclosed structures

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
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Also Published As

Publication number Publication date
FR2966227B1 (en) 2012-12-28
ES2643149T3 (en) 2017-11-21
EP2442041A1 (en) 2012-04-18
FR2966227A1 (en) 2012-04-20

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