EP1573253A1 - Device for ventilating a space according to the relative humidity recorded - Google Patents

Device for ventilating a space according to the relative humidity recorded

Info

Publication number
EP1573253A1
EP1573253A1 EP03796168A EP03796168A EP1573253A1 EP 1573253 A1 EP1573253 A1 EP 1573253A1 EP 03796168 A EP03796168 A EP 03796168A EP 03796168 A EP03796168 A EP 03796168A EP 1573253 A1 EP1573253 A1 EP 1573253A1
Authority
EP
European Patent Office
Prior art keywords
sensitive sensor
air inlet
main air
compartment
room
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03796168A
Other languages
German (de)
French (fr)
Other versions
EP1573253B1 (en
Inventor
Pierre Jardinier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Conseils Etudes et Recherches en Gestion de lAir CERGA
Original Assignee
Conseils Etudes et Recherches en Gestion de lAir CERGA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Conseils Etudes et Recherches en Gestion de lAir CERGA filed Critical Conseils Etudes et Recherches en Gestion de lAir CERGA
Publication of EP1573253A1 publication Critical patent/EP1573253A1/en
Application granted granted Critical
Publication of EP1573253B1 publication Critical patent/EP1573253B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/18—Air-flow control members, e.g. louvres, grilles, flaps or guide plates specially adapted for insertion in flat panels, e.g. in door or window-pane
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • 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

Definitions

  • the present invention relates to a ventilation device capable of ventilating a room as a function of the relative humidity measured in the room using a humidity sensitive sensor.
  • the different rooms in a room have varying ventilation needs in relation to each other over time. This need evolves mainly according to the type of rooms and the occupation. With regard to technical parts, the need for ventilation depends mainly on the emission of water vapor. Regarding the main rooms, bedrooms and living room, it is the number of people occupying these rooms that determines the level of ventilation required.
  • Such a ventilation device comprises an air inlet with a modular passage surface controlled by a sensor.
  • the latter consists of a humidity sensitive fabric which is housed in the room to be ventilated and which undergoes physical transformations, elongation or retraction, according to the relative humidity prevailing in the room.
  • T 1 capt T '. int " • '' i ⁇ t ' ⁇ xt'' in which T capt is the temperature read by the sensor, T int the interior temperature of the room, T ext the exterior temperature, and K the predefined and generally understood temperature coefficient O, 15 and O, 35 in temperate regions.
  • the flow rate of the air inlet can vary in a ratio ranging from 1 to 3 and sometimes from 1 to 10, it follows that the heat exchanges between the outside air and the humidity-sensitive sensor are not not really mastered at all times. Consequently, this means that it is not possible to permanently set the temperature coefficient K to the desired value,
  • the assembly of the ventilation device is difficult to carry out and the authorized geometric configurations are limited because it is necessary to integrate the humidity sensitive sensor near the air inlet.
  • the present invention aims to solve the drawbacks mentioned above, and for this purpose relates to a ventilation device capable of ventilating a room according to the relative humidity measured in the room using a humidity sensitive sensor housed in a compartment, said device comprising a main air inlet having a modular passage surface controlled by the humidity-sensitive sensor, characterized in that it comprises a secondary duct capable of connecting the interior of the room with the exterior, this secondary duct having a passage section independent of that of the main air inlet, being in thermal communication with the humidity sensitive sensor compartment, and being capable of modifying the temperature thereof.
  • the fact of providing a secondary duct independent of the main entrance makes it possible to perfectly control the influence of the outside temperature on the humidity sensitive sensor. Indeed, the latter no longer being thermal communication with the main air inlet, the passage area of which varies according to the occupancy of the room, but with the secondary duct, the passage area of which is independent of that of the main air inlet, the heat exchanges between the outside air and the humidity-sensitive sensor are regulated, and it is therefore possible to obtain an even more stable temperature coefficient K whatever the air flow rate passing through the main inlet.
  • the passage section of the secondary conduit is constant. Consequently, the quantity of air passing through the passage surface of the secondary duct is substantially constant in normal configurations, that is to say when the pressure difference on either side of the duct is of the order of some Pascals. It is then possible to very precisely set the temperature coefficient K.
  • the passage surface of the secondary conduit is controlled by the outside temperature.
  • This additional modulation can be useful when the climate is extreme, for example when the outside temperature drops below a predetermined value.
  • the variation in the amount of water in the outside air is relatively small compared to the variation in temperature. For example, there are about 2.5 g of water per kg of air at -5 ° C and 1.6 g of water per kg of air at -10 ° C, a difference of only 0.9 g of water per kg of air.
  • the passage surface of the secondary conduit can be subject to any other parameter, without any restriction.
  • the passage section of the secondary duct is less than 10% of the passage section of the main air inlet, and preferably between 2 and 5%.
  • a thermal insulator is positioned between the secondary duct and the humidity sensitive sensor.
  • this thermal insulator it could then be necessary to provide a secondary conduit having a very small passage surface in order to obtain adequate heat exchanges between the secondary conduit and the humidity sensitive sensor.
  • the presence of an insulator thermal interlayer allows the use of a secondary conduit with an enlarged passage surface since it makes it possible to temper, in a predetermined manner, the influence of the latter on the humidity sensitive sensor.
  • the presence of an insulator avoids the formation of condensation in the humidity sensitive sensor compartment, which could disturb it, or even damage it in the event of direct contact,
  • the main air inlet and the humidity sensitive sensor are respectively housed in separate compartments.
  • the secondary duct can therefore be adjusted to the most varied geometrical conditions.
  • the two compartments are positioned in the extension of one another.
  • the senor is produced using a strip of humidity sensitive fabric attached, on the one hand, to a fixed element of the compartment in which it is housed, and on the other hand, to a lever mounted pivoting around 'an axis of rotation.
  • this lever is able, by pivoting about its axis of rotation, to cause the setting rotation of a crank secured to a rod to which is attached a shutter associated with the main air inlet.
  • Figure 1 is a front view of a ventilation device according to the invention when the shutter is open, with omission of the covers.
  • FIG. 2 is a partial perspective view of the ventilation device shown in FIG. 1.
  • FIG 3 is a front view of the ventilation device shown in Figure 1 when the shutter is closed.
  • a ventilation device 1 according to the invention is intended to be fixed inside a room and comprises, on the one hand, a first compartment 2 in which is provided an entry of main air 3 whose passage surface is variable depending on the positioning of a flap 4 which is associated with it, and on the other hand, a second compartment 5 in which is formed a secondary duct 6 which can connect the interior of the room with the outside via a secondary air inlet 7 cut in the bottom 8 of the compartment 5.
  • These two compartments 2, 5 are arranged in the extension of one another and separated from one the other by a partition wall 23. The covers closing each of the two compartments 2, 5 have not been shown.
  • the compartment 5 contains a humidity sensitive sensor produced in the form of a horizontal strip 9 of humidity sensitive fabric, an insulator 10 disposed between the secondary duct 6 and the strip 9, as well a shutter actuation system 4 associated with the main air inlet 3.
  • the secondary duct 6 is delimited by the bottom 8 of the compartment 5, by a lower edge 1 1 projecting from the bottom 8, by the lower part of the insulator 10, and finally by the inner face of the compartment cover 5 (not shown).
  • the strip 9 is attached, on the one hand, to the actuation system of the flap 4, and on the other hand, to an element 13 secured to the compartment 5. More specifically, the actuation system is produced from a lever 14 having a first end to which said strip 9 is attached. Just above this point of attachment, the lever 14 has an axis of rotation 1 5 the ends of which are each housed in a slot 16 of a yoke 17 attached to the compartment 5. Just below the point of attachment between the strip 9 and the lever 14, a perforated strip 18 is fixed in the end of the lever 14. A spring 19, kept stretched horizontally between the strip 18 and a lug 20, allows to permanently keep the strip 9 energized.
  • the lever 14 also has a second jaw-shaped end 21 capable of cooperating with a crank. 22 passing through the partition wall 23 between the two compartments 2, 5. This crank 22 is integral with a horizontal rod 24 to which the flap 4 is attached.
  • the ventilation device 1 operates in the following manner.
  • the band 9 of water-sensitive fabric reacts when there is a significant increase or reduction in the relative humidity within the room.
  • the variation in the passage area of the main air inlet 3 is linked to the variation in the relative humidity of the room and to the temperature in the compartment 5, influenced by the outside temperature.
  • the secondary air inlet 7 has a constant passage surface allowing a substantially constant quantity of air to pass continuously along the secondary duct 6, this quantity of air first modifying the temperature of the insulator 10 then that of the strip 9.
  • This quantity of outside air after having flowed along the secondary duct 6, finally enters the room and mixes with the air of the room without modifying the characteristics thereof.
  • the strip 9 becomes longer and causes, by cooperation with the spring 19, the pivoting of the lever 14 about its axis of rotation 15 in the direction clockwise. Consequently, the jaw 21 of the lever 14 rises and drives the crank 22 in rotation, which itself causes the flap 4 to open by actuation on the rod 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Air-Flow Control Members (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

The invention relates to a ventilation device which can ventilate a space according to the relative humidity measured therein with a moisture-sensitive sensor (9) which is housed in a compartment (5). The inventive device consists of a main air inlet (3) comprising an adjustable passage surface which is controlled by the moisture-sensitive sensor. The invention is characterised in that it also comprises a secondary sensor (6) which can connect the interior of the space with the exterior, said secondary conduit comprising a passage section which is independent of that of the main air inlet. Moreover, said secondary conduit is in thermal communication with the compartment of the moisture-sensitive sensor and can alter the temperature of same.

Description

DISPOSITIF DE VENTILATION D'UN LOCAL EN FONCTION DE L'HUMIDITEDEVICE FOR VENTILATION OF A PREMISES ACCORDING TO MOISTURE
RELATIVE RELEVEERELATIVE RAISED
La présente invention se rapporte à un dispositif de ventilation apte à ventiler un local en fonction de l'humidité relative mesurée dans le local à l'aide d'un capteur hygrosensible.The present invention relates to a ventilation device capable of ventilating a room as a function of the relative humidity measured in the room using a humidity sensitive sensor.
Les différentes pièces d'un local présentent des besoins de ventilation variables les unes par rapport aux autres au cours du temps. Ce besoin évolue principalement en fonction du type de pièces et de l'occupation. En ce qui concerne les pièces techniques, le besoin en ventilation est fonction essentiellement des émissions de vapeurs d'eau. En ce qui concerne les pièces principales, chambres et salle de séjour, c'est le nombre de personnes occupant ces pièces qui détermine le niveau de ventilation nécessaire.The different rooms in a room have varying ventilation needs in relation to each other over time. This need evolves mainly according to the type of rooms and the occupation. With regard to technical parts, the need for ventilation depends mainly on the emission of water vapor. Regarding the main rooms, bedrooms and living room, it is the number of people occupying these rooms that determines the level of ventilation required.
Actuellement, la technique la plus avancée en matière de gestion du besoin de ventilation permet d'asservir la surface de passage des entrées d'air à l'humidité relative des locaux ventilés, le niveau d'humidité relative étant lié au niveau d'humidité absolue et à la température par une loi physique parfaitement déterminée et connue de l'homme du métier. Un tel dispositif de ventilation comprend une entrée d'air à surface de passage modulable commandée par un capteur. Ce dernier est constitué par un tissu hygrosensible qui est logé dans le local à ventiler et qui subit des transformations physiques, élongation ou rétractation, en fonction de l'humidité relative régnant dans le local.Currently, the most advanced technique in terms of managing the ventilation requirement makes it possible to control the passage surface of the air inlets to the relative humidity of the ventilated premises, the relative humidity level being linked to the humidity level. absolute and at temperature by a perfectly determined physical law known to those skilled in the art. Such a ventilation device comprises an air inlet with a modular passage surface controlled by a sensor. The latter consists of a humidity sensitive fabric which is housed in the room to be ventilated and which undergoes physical transformations, elongation or retraction, according to the relative humidity prevailing in the room.
Afin d'obtenir un dispositif de ventilation apte à mesurer de faibles variations de l'humidité relative découlant de la modification de l'occupation du local, et cela quelle que soit la saison, il est connu de l'homme du métier de placer ce capteur hygrosensible à une température, d'une part, différente de celle du local à ventiler, et d'autre part, prenant en compte la température extérieure. La température lue par le capteur hygrosensible peut alors être définie par l'équation suivante,In order to obtain a ventilation device capable of measuring small variations in the relative humidity resulting from the modification of the occupation of the room, and this whatever the season, it is known to the person skilled in the art to place this humidity sensitive sensor on the one hand, different from that of the room to be ventilated, and on the other hand, taking into account the outside temperature. The temperature read by the humidity sensitive sensor can then be defined by the following equation,
T 1 capt = T ' . int "• ' ' iπt ' βxt' ' dans laquelle Tcapt est la température lue par le capteur, Tint la température intérieure du local, Text la température extérieure, et K le coefficient de température prédéfini et généralement compris O, 15 et O, 35 dans les régions tempérées.T 1 capt = T '. int " • '' iπt 'βxt'' in which T capt is the temperature read by the sensor, T int the interior temperature of the room, T ext the exterior temperature, and K the predefined and generally understood temperature coefficient O, 15 and O, 35 in temperate regions.
Dans les dispositifs de ventilation actuels, le capteur hygrosensible est obligatoirement positionné au voisinage de l'entrée d'air afin d'être en communication thermique avec l'air extérieur. Il en découle de ce fait deux inconvénients majeurs :In current ventilation devices, the humidity sensitive sensor is necessarily positioned in the vicinity of the air inlet in order to be in thermal communication with the outside air. There are therefore two major drawbacks:
- d'une part, le débit de l'entrée d'air pouvant varier dans un rapport allant de 1 à 3 et parfois de 1 à 10, il en découle que les échanges thermiques entre l'air extérieur et le capteur hygrosensible ne sont pas véritablement maîtrisés à tout moment. Par conséquent, cela signifie qu'il n'est pas possible de fixer durablement le coefficient de température K à la valeur souhaitée,- On the one hand, the flow rate of the air inlet can vary in a ratio ranging from 1 to 3 and sometimes from 1 to 10, it follows that the heat exchanges between the outside air and the humidity-sensitive sensor are not not really mastered at all times. Consequently, this means that it is not possible to permanently set the temperature coefficient K to the desired value,
- d'autre part, l'assemblage du dispositif de ventilation est délicat à réaliser et les configurations géométriques autorisées sont limitées car il est nécessaire d'intégrer le capteur hygrosensible à proximité de l'entrée d'air.- On the other hand, the assembly of the ventilation device is difficult to carry out and the authorized geometric configurations are limited because it is necessary to integrate the humidity sensitive sensor near the air inlet.
La présente invention a pour but de résoudre les inconvénients cités précédemment, et concerne à cet effet un dispositif de ventilation apte à ventiler un local en fonction de l'humidité relative mesurée dans le local à l'aide d'un capteur hygrosensible logé dans un compartiment, ledit dispositif comportant une entrée d'air principale possédant une surface de passage modulable commandée par le capteur hygrosensible, caractérisé en ce qu'il comprend un conduit secondaire pouvant relier l'intérieur du local avec l'extérieur, ce conduit secondaire possédant une section de passage indépendante de celle de l'entrée d'air principale, étant en communication thermique avec le compartiment du capteur hygrosensible, et étant apte à modifier la température de celui-ci.The present invention aims to solve the drawbacks mentioned above, and for this purpose relates to a ventilation device capable of ventilating a room according to the relative humidity measured in the room using a humidity sensitive sensor housed in a compartment, said device comprising a main air inlet having a modular passage surface controlled by the humidity-sensitive sensor, characterized in that it comprises a secondary duct capable of connecting the interior of the room with the exterior, this secondary duct having a passage section independent of that of the main air inlet, being in thermal communication with the humidity sensitive sensor compartment, and being capable of modifying the temperature thereof.
Ainsi, le fait de prévoir un conduit secondaire indépendant de l'entrée principale permet de parfaitement maîtriser l'influence de la température extérieure sur le capteur hygrosensible. En effet, ce dernier n'étant plus en communication thermique avec l'entrée d'air principale, dont la surface de passage est variable en fonction de l'occupation du local, mais avec le conduit secondaire dont la surface de passage est indépendante de celle de l'entrée d'air principale, les échanges thermiques entre l'air extérieur et le capteur hygrosensible sont régulés, et il est donc possible d'obtenir un coefficient de température K encore plus stable quel que soit le débit d'air passant par l'entrée principale.Thus, the fact of providing a secondary duct independent of the main entrance makes it possible to perfectly control the influence of the outside temperature on the humidity sensitive sensor. Indeed, the latter no longer being thermal communication with the main air inlet, the passage area of which varies according to the occupancy of the room, but with the secondary duct, the passage area of which is independent of that of the main air inlet, the heat exchanges between the outside air and the humidity-sensitive sensor are regulated, and it is therefore possible to obtain an even more stable temperature coefficient K whatever the air flow rate passing through the main inlet.
De plus, l'assemblage d'un tel dispositif de ventilation est grandement simplifié puisqu'il n'est plus nécessaire d'intégrer le capteur hygrosensible au voisinage de l'entrée d'air principale. Le capteur hygrosensible peut ainsi être véritablement dissocié et éloigné de l'entrée d'air principale.In addition, the assembly of such a ventilation device is greatly simplified since it is no longer necessary to integrate the humidity sensitive sensor in the vicinity of the main air inlet. The humidity sensitive sensor can thus be truly dissociated and distant from the main air intake.
Selon un premier mode de réalisation préféré de l'invention, la section de passage du conduit secondaire est constante. Par conséquent, la quantité d'air traversant la surface de passage du conduit secondaire est sensiblement constante dans les configurations normales, c'est-à-dire lorsque l'écart en pression de part et d'autre du conduit est de l'ordre de quelques Pascals. Il est alors possible de fixer très précisément le coefficient de température K.According to a first preferred embodiment of the invention, the passage section of the secondary conduit is constant. Consequently, the quantity of air passing through the passage surface of the secondary duct is substantially constant in normal configurations, that is to say when the pressure difference on either side of the duct is of the order of some Pascals. It is then possible to very precisely set the temperature coefficient K.
Selon un second mode de réalisation préféré de l'invention, la surface de passage du conduit secondaire est asservie à la température extérieure. Cette modulation complémentaire peut être utile lorsque le climat est extrême, par exemple lorsque la température extérieure chute en dessous d'une valeur prédéterminée. En effet, dans ce cas, la variation de la quantité d'eau dans l'air extérieur est relativement faible en regard de la variation de la température. A titre d'exemple, on relève environ 2,5 g d'eau par kg d'air à -5°C et 1 ,6 g d'eau par kg d'air à -10°C, soit une différence de seulement 0,9 g d'eau par kg d'air. Dans cet exemple, de manière à rester dans la plage de fonctionnement du dispositif de ventilation, il est alors judicieux de réduire la surface de passage du conduit secondaire afin de limiter l'influence de la température extérieure sur le capteur hygrosensible, ce qui revient en définitive à fixer un nouveau coefficient de température K. Bien évidemment, la surface de passage du conduit secondaire peut être asservie à tout autre paramètre, sans aucune restriction.According to a second preferred embodiment of the invention, the passage surface of the secondary conduit is controlled by the outside temperature. This additional modulation can be useful when the climate is extreme, for example when the outside temperature drops below a predetermined value. Indeed, in this case, the variation in the amount of water in the outside air is relatively small compared to the variation in temperature. For example, there are about 2.5 g of water per kg of air at -5 ° C and 1.6 g of water per kg of air at -10 ° C, a difference of only 0.9 g of water per kg of air. In this example, so as to remain within the operating range of the ventilation device, it is then advisable to reduce the passage area of the secondary duct in order to limit the influence of the outside temperature on the humidity-sensitive sensor, which amounts to definitive to set a new temperature coefficient K. Obviously, the passage surface of the secondary conduit can be subject to any other parameter, without any restriction.
Avantageusement, la section de passage du conduit secondaire est inférieure à 10 % de la section de passage de l'entrée d'air principale, et de préférence comprise entre 2 et 5 %.Advantageously, the passage section of the secondary duct is less than 10% of the passage section of the main air inlet, and preferably between 2 and 5%.
Préférentiellement, un isolant thermique est positionné entre le conduit secondaire et le capteur hygrosensible. Selon la configuration retenue, sans cet isolant thermique, il pourrait alors être nécessaire de prévoir un conduit secondaire présentant une surface de passage très réduite afin d'obtenir des échanges thermiques adéquats entre le conduit secondaire et le capteur hygrosensible. Cependant, dans un tel cas, il serait relativement délicat d'établir des échanges thermiques adéquats car toute perturbation entraînerait très rapidement une variation de la température du capteur hygrosensible, et donc du coefficient de température K. Par conséquent, la présence d'un isolant thermique intercalaire autorise l'utilisation d'un conduit secondaire à surface de passage élargie puisqu'il permet de tempérer, de façon prédéterminée, l'influence de ce dernier sur le capteur hygrosensible. De plus, la présence d'un isolant permet d'éviter la formation de condensation dans le compartiment du capteur hygrosensible, qui pourrait le perturber, voire l'endommager en cas de contact direct,Preferably, a thermal insulator is positioned between the secondary duct and the humidity sensitive sensor. Depending on the configuration chosen, without this thermal insulator, it could then be necessary to provide a secondary conduit having a very small passage surface in order to obtain adequate heat exchanges between the secondary conduit and the humidity sensitive sensor. However, in such a case, it would be relatively difficult to establish adequate heat exchanges since any disturbance would very quickly lead to a variation in the temperature of the humidity sensitive sensor, and therefore in the temperature coefficient K. Consequently, the presence of an insulator thermal interlayer allows the use of a secondary conduit with an enlarged passage surface since it makes it possible to temper, in a predetermined manner, the influence of the latter on the humidity sensitive sensor. In addition, the presence of an insulator avoids the formation of condensation in the humidity sensitive sensor compartment, which could disturb it, or even damage it in the event of direct contact,
Avantageusement encore, l'entrée d'air principale et le capteur hygrosensible sont respectivement logés dans des compartiments distincts. Le conduit secondaire peut donc être ajusté aux conditions géométriques les plus variées.Advantageously also, the main air inlet and the humidity sensitive sensor are respectively housed in separate compartments. The secondary duct can therefore be adjusted to the most varied geometrical conditions.
Préférentiellement, les deux compartiments sont positionnés dans le prolongement l'un de l'autre.Preferably, the two compartments are positioned in the extension of one another.
Préférentiellement encore, le capteur est réalisé à l'aide d'une bande de tissu hygrosensible rattachée, d'une part, à un élément fixe du compartiment dans laquelle elle est logée, et d'autre part, à un levier monté pivotant autour d'un axe de rotation. Avantageusement, ce levier est apte, par pivotement autour de son axe de rotation, à provoquer la mise en rotation d'une manivelle solidaire d'une tige à laquelle est rattaché un volet associé à l'entrée d'air principale.Also preferably, the sensor is produced using a strip of humidity sensitive fabric attached, on the one hand, to a fixed element of the compartment in which it is housed, and on the other hand, to a lever mounted pivoting around 'an axis of rotation. Advantageously, this lever is able, by pivoting about its axis of rotation, to cause the setting rotation of a crank secured to a rod to which is attached a shutter associated with the main air inlet.
L'invention sera mieux comprise à l'aide de la description détaillée qui est exposée ci-dessous en regard du dessin annexé dans lequel :The invention will be better understood using the detailed description which is set out below with reference to the appended drawing in which:
La figure 1 est une vue de face d'un dispositif de ventilation selon l'invention lorsque le volet est ouvert, avec omission des couvercles.Figure 1 is a front view of a ventilation device according to the invention when the shutter is open, with omission of the covers.
La figure 2 est une vue partielle en perspective du dispositif de ventilation représenté à la figure 1 .FIG. 2 is a partial perspective view of the ventilation device shown in FIG. 1.
La figure 3 est une vue de face du dispositif de ventilation représenté à la figure 1 lorsque le volet est fermé.Figure 3 is a front view of the ventilation device shown in Figure 1 when the shutter is closed.
Un dispositif 1 de ventilation selon l'invention, tel que représenté à la figure 1 , est destiné à être fixé à l'intérieur d'un local et comprend, d'une part, un premier compartiment 2 dans lequel est prévue une entrée d'air principale 3 dont la surface de passage est variable en fonction du positionnement d'un volet 4 qui lui est associé, et d'autre part, un second compartiment 5 dans lequel est ménagé un conduit secondaire 6 pouvant relier l'intérieur du local avec l'extérieur par l'intermédiaire d'une entrée d'air secondaire 7 découpée dans le fond 8 du compartiment 5. Ces deux compartiments 2, 5 sont disposés dans le prolongement l'un de l'autre et séparés l'un de l'autre par une paroi de séparation 23. Les couvercles obturant chacun des deux compartiments 2, 5 n'ont pas été représentés.A ventilation device 1 according to the invention, as shown in FIG. 1, is intended to be fixed inside a room and comprises, on the one hand, a first compartment 2 in which is provided an entry of main air 3 whose passage surface is variable depending on the positioning of a flap 4 which is associated with it, and on the other hand, a second compartment 5 in which is formed a secondary duct 6 which can connect the interior of the room with the outside via a secondary air inlet 7 cut in the bottom 8 of the compartment 5. These two compartments 2, 5 are arranged in the extension of one another and separated from one the other by a partition wall 23. The covers closing each of the two compartments 2, 5 have not been shown.
En se référant aux figures 1 à 3, on observe que le compartiment 5 renferme un capteur hygrosensible réalisé sous la forme d'une bande 9 horizontale de tissu hygrosensible, un isolant 10 disposé entre le conduit secondaire 6 et la bande 9, ainsi qu'un système d'actionnement du volet 4 associé à l'entrée d'air principale 3.Referring to FIGS. 1 to 3, it can be seen that the compartment 5 contains a humidity sensitive sensor produced in the form of a horizontal strip 9 of humidity sensitive fabric, an insulator 10 disposed between the secondary duct 6 and the strip 9, as well a shutter actuation system 4 associated with the main air inlet 3.
Plus précisément, le conduit secondaire 6 est délimité par le fond 8 du compartiment 5, par un bord inférieur 1 1 faisant saillie du fond 8, par la partie inférieure de l'isolant 10, et enfin par la face intérieure du couvercle du compartiment 5 (non représenté).More specifically, the secondary duct 6 is delimited by the bottom 8 of the compartment 5, by a lower edge 1 1 projecting from the bottom 8, by the lower part of the insulator 10, and finally by the inner face of the compartment cover 5 (not shown).
La bande 9 est rattachée, d'une part, au système d'actionnement du volet 4, et d'autre part, à un élément 13 solidaire du compartiment 5. Plus précisément, le système d'actionnement est réalisé à partir d'un levier 14 présentant une première extrémité à laquelle est rattachée ladite bande 9. Juste au dessus de ce point de rattachement, le levier 14 comporte un axe de rotation 1 5 dont les extrémités sont chacune logées dans une fente 16 d'une chape 17 rattachée au compartiment 5. Juste en dessous du point de rattachement entre la bande 9 et le levier 14, une lamelle 18 perforée est fixée dans l'extrémité du levier 14. Un ressort 19, maintenu étiré horizontalement entre la lamelle 18 et un ergot 20, permet de garder en permanence la bande 9 sous tension. Le levier 14 comporte également une seconde extrémité en forme de mâchoire 21 apte à coopérer avec une manivelle . 22 traversant la paroi de séparation 23 entre les deux compartiments 2, 5. Cette manivelle 22 est solidaire d'une tige 24 horizontale à laquelle est rattachée le volet 4.The strip 9 is attached, on the one hand, to the actuation system of the flap 4, and on the other hand, to an element 13 secured to the compartment 5. More specifically, the actuation system is produced from a lever 14 having a first end to which said strip 9 is attached. Just above this point of attachment, the lever 14 has an axis of rotation 1 5 the ends of which are each housed in a slot 16 of a yoke 17 attached to the compartment 5. Just below the point of attachment between the strip 9 and the lever 14, a perforated strip 18 is fixed in the end of the lever 14. A spring 19, kept stretched horizontally between the strip 18 and a lug 20, allows to permanently keep the strip 9 energized. The lever 14 also has a second jaw-shaped end 21 capable of cooperating with a crank. 22 passing through the partition wall 23 between the two compartments 2, 5. This crank 22 is integral with a horizontal rod 24 to which the flap 4 is attached.
Le dispositif 1 de ventilation selon l'invention fonctionne de la manière suivante. La bande 9 de tissu hygrosensible réagit lorsqu'il se produit une augmentation ou une réduction significative de l'humidité relative au sein du local. La variation de la surface de passage de l'entrée d'air principale 3 est liée à la variation d'humidité relative du local et à la température dans le compartiment 5, influencée par la température extérieure. En effet, l'entrée d'air secondaire 7 possède une surface de passage constante laissant passer, en permanence, une quantité d'air sensiblement constante le long du conduit secondaire 6, cette quantité d'air modifiant tout d'abord la température de l'isolant 10 puis celle de la bande 9. Cette quantité d'air extérieur, après s'être écoulé le long du conduit secondaire 6, pénètre finalement dans le local et se mélange à l'air du local sans en modifier les caractéristiques.The ventilation device 1 according to the invention operates in the following manner. The band 9 of water-sensitive fabric reacts when there is a significant increase or reduction in the relative humidity within the room. The variation in the passage area of the main air inlet 3 is linked to the variation in the relative humidity of the room and to the temperature in the compartment 5, influenced by the outside temperature. In fact, the secondary air inlet 7 has a constant passage surface allowing a substantially constant quantity of air to pass continuously along the secondary duct 6, this quantity of air first modifying the temperature of the insulator 10 then that of the strip 9. This quantity of outside air, after having flowed along the secondary duct 6, finally enters the room and mixes with the air of the room without modifying the characteristics thereof.
Aux figures 1 et 2, la surface de passage de l'entrée d'air principale 3 est maximale puisque le volet 4 est en position effacée. Au bout d'un certain temps, l'humidité relative au sein du local va chuter, ce qui va provoquer la rétractation de la bande 9. Celle-ci va alors exercer des efforts de traction sur le levier 14 supérieurs à ceux exercés par le ressort 19 sur la lamelle 18, et il en découle que le levier 14 va pivoter autour de son axe de rotation 15 dans le sens trigonométrique. Ce faisant, comme représenté à la figure 3, la mâchoire 21 du levier 14 va s'abaisser et va entraîner en rotation la manivelle 22 qui, elle-même, va provoquer la mise en rotation de la tige 24 et donc provoquer la fermeture du volet 4.In Figures 1 and 2, the passage area of the main air inlet 3 is maximum since the flap 4 is in the retracted position. After a while, the relative humidity in the room will drop, which will cause the retraction of the strip 9. The latter will then exert tensile forces on the lever 14 greater than those exerted by the spring 19 on the strip 18, and it follows that the lever 14 will pivot around its axis of rotation 15 counterclockwise. In doing so, as shown in Figure 3, the jaw 21 of the lever 14 will lower and will rotate the crank 22 which, itself, will cause the rotation of the rod 24 and therefore cause the closure of the part 4.
A l'inverse, lorsque l'humidité relative augmente de façon significative au sein du local, la bande 9 s'allonge et provoque, par coopération avec le ressort 19, le pivotement du levier 14 autour de son axe de rotation 15 dans le sens des aiguilles d'une montre. Par conséquent, la mâchoire 21 du levier 14 s'élève et entraîne en rotation la manivelle 22 qui, elle-même, provoque l'ouverture du volet 4 par actionnement sur la tige 24.Conversely, when the relative humidity increases significantly within the room, the strip 9 becomes longer and causes, by cooperation with the spring 19, the pivoting of the lever 14 about its axis of rotation 15 in the direction clockwise. Consequently, the jaw 21 of the lever 14 rises and drives the crank 22 in rotation, which itself causes the flap 4 to open by actuation on the rod 24.
Bien que l'invention ait été décrite en liaison avec des exemples particuliers de réalisation, il est bien évident qu'elle n'y est nullement limitée et qu'elle comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci entrent dans le cadre de l'invention. Although the invention has been described in connection with particular examples of embodiment, it is obvious that it is in no way limited thereto and that it includes all the technical equivalents of the means described as well as their combinations if these fall within the scope of the invention.

Claims

REVENDICATIONS
1 .- Dispositif (1 ) de ventilation apte à ventiler un local en fonction de l'humidité relative mesurée dans le local à l'aide d'un capteur (9) hygrosensible logé dans un compartiment (5), ledit dispositif comportant une entrée d'air principale (3) possédant une surface de passage modulable commandée par le capteur hygrosensible, caractérisé en ce qu'il comprend un conduit secondaire (6) pouvant relier l'intérieur du local avec l'extérieur,- ce conduit secondaire possédant une section de passage indépendante de celle de l'entrée d'air principale, étant en communication thermique avec le compartiment du capteur hygrosensible, et étant apte à modifier la température de celui-ci.1 .- Device (1) for ventilation capable of ventilating a room as a function of the relative humidity measured in the room using a humidity sensitive sensor (9) housed in a compartment (5), said device comprising an inlet main air (3) having a modular passage surface controlled by the humidity sensitive sensor, characterized in that it comprises a secondary duct (6) which can connect the interior of the room with the exterior, - this secondary duct having a passage section independent of that of the main air inlet, being in thermal communication with the humidity sensitive sensor compartment, and being capable of modifying the temperature thereof.
2.- Dispositif (1 ) selon la revendication 1 , caractérisé en ce que la section de passage du conduit secondaire (6) est constante.2.- Device (1) according to claim 1, characterized in that the passage section of the secondary conduit (6) is constant.
3.- Dispositif selon la revendication 1 , caractérisé en ce que la section de passage du conduit secondaire est asservie à la température extérieure.3.- Device according to claim 1, characterized in that the passage section of the secondary conduit is controlled by the outside temperature.
4.- Dispositif (1 ) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la section de passage du conduit secondaire (6) est inférieure à 10 % de la section de passage de l'entrée d'air principale (3), et de préférence comprise entre 2 et 5 %.4.- Device (1) according to any one of claims 1 to 3, characterized in that the passage section of the secondary duct (6) is less than 10% of the passage section of the main air inlet (3), and preferably between 2 and 5%.
5.- Dispositif (1 ) selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'un isolant (10) thermique est positionné entre le conduit secondaire (6) et le capteur hygrosensible (9).5.- Device (1) according to any one of claims 1 to 4, characterized in that an insulator (10) thermal is positioned between the secondary duct (6) and the humidity sensitive sensor (9).
6. Dispositif (1 ) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'entrée d'air principale (3) et le capteur hygrosensible (9) sont respectivement logés dans des compartiments (2, 5) distincts.6. Device (1) according to any one of claims 1 to 5, characterized in that the main air inlet (3) and the humidity sensitive sensor (9) are respectively housed in separate compartments (2, 5) .
7. Dispositif (1 ) selon la revendication 6, caractérisé en ce que les deux compartiments (2, 5) sont positionnés dans le prolongement l'un de l'autre. 7. Device (1) according to claim 6, characterized in that the two compartments (2, 5) are positioned in the extension of one another.
8.- Dispositif (1 ) selon la revendication 7, caractérisé en ce que le capteur est réalisé à l'aide d'une bande (9) de tissu hygrosensible rattachée, d'une part, à un élément fixe (13) du compartiment (5) dans laquelle elle est logée, et d'autre part, à une levier (14) monté pivotant autour d'un axe de rotation (15).8.- Device (1) according to claim 7, characterized in that the sensor is produced using a strip (9) of sensitive fabric attached, on the one hand, to a fixed element (13) of the compartment (5) in which it is housed, and on the other hand, a lever (14) pivotally mounted about an axis of rotation (15).
9.- Dispositif (1 ) selon la revendication 8, caractérisé en ce que le levier (14) est apte, par pivotement autour de son axe de rotation (15), à provoquer la mise en rotation d'une manivelle (22) solidaire d'une tige (24) à laquelle est rattaché un volet (4) associé à l'entrée d'air principale (3). 9.- Device (1) according to claim 8, characterized in that the lever (14) is capable, by pivoting about its axis of rotation (15), to cause the rotation of a crank (22) integral a rod (24) to which is attached a flap (4) associated with the main air inlet (3).
EP03796168.7A 2002-12-16 2003-12-05 Device for ventilating a space according to the relative humidity recorded Expired - Lifetime EP1573253B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0215890 2002-12-16
FR0215890A FR2848648B1 (en) 2002-12-16 2002-12-16 VENTILATION DEVICE OF A LOCAL BASED ON THE RELATIVE HUMIDITY TESTED
PCT/FR2003/003597 WO2004063635A1 (en) 2002-12-16 2003-12-05 Device for ventilating a space according to the relative humidity recorded

Publications (2)

Publication Number Publication Date
EP1573253A1 true EP1573253A1 (en) 2005-09-14
EP1573253B1 EP1573253B1 (en) 2016-08-10

Family

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Application Number Title Priority Date Filing Date
EP03796168.7A Expired - Lifetime EP1573253B1 (en) 2002-12-16 2003-12-05 Device for ventilating a space according to the relative humidity recorded

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EP (1) EP1573253B1 (en)
AU (1) AU2003298420A1 (en)
ES (1) ES2601492T3 (en)
FR (1) FR2848648B1 (en)
HU (1) HUE032021T2 (en)
RU (1) RU2310797C2 (en)
WO (1) WO2004063635A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10352257B4 (en) * 2003-11-08 2006-02-23 Danfoss A/S Dewpoint
FR2955920B1 (en) * 2010-02-02 2012-03-02 Anjos Ventilation DEVICE FOR CONTROLLING THE OPENING DEGREE OF A VENTILATION MOUTH AND VENTILATION MOUTH COMPRISING SUCH A DEVICE
FR2958730B1 (en) 2010-04-12 2012-06-15 Somfy Sas CONNECTING HYGROREGLABLE AIR INTAKE
EP2418434B1 (en) * 2010-08-12 2013-10-09 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Method and device for regulating an air flow
DE102017005246A1 (en) 2017-06-01 2018-12-06 Gert Bartholomäus Supply air element with humid air-controlled regulation of the room air

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2589996B2 (en) * 1981-06-30 1989-05-05 Serva Soc MEANS FOR THE IMPLEMENTATION OF A METHOD FOR REGULATING THE VENTILATION OF A PREMISES
FR2508606A1 (en) * 1981-06-30 1982-12-31 Serva Soc METHOD FOR REGULATING THE VENTILATION OF A PREMISES AND MEANS FOR ITS IMPLEMENTATION
FR2708992B1 (en) * 1993-08-10 1995-11-24 Cerga Method and device for adjusting the section of a ventilation air inlet in a room.
FR2729461B1 (en) * 1995-01-17 1997-04-18 Cerga DEVICE FOR ADJUSTING THE PASSAGE SECTION OF A VENTILATION AIR VENT OF A PREMISES

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004063635A1 *

Also Published As

Publication number Publication date
AU2003298420A1 (en) 2004-08-10
FR2848648A1 (en) 2004-06-18
FR2848648B1 (en) 2005-12-30
RU2005116981A (en) 2006-01-27
HUE032021T2 (en) 2017-08-28
EP1573253B1 (en) 2016-08-10
ES2601492T3 (en) 2017-02-15
RU2310797C2 (en) 2007-11-20
WO2004063635A1 (en) 2004-07-29

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