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)

Applications Claiming Priority (3)

Publications (2)

Family

ID=32338807

Family Applications (1)

Country Status (7)

Families Citing this family (5)

Family Cites Families (4)

• 2002
  • 2002-12-16 FR FR0215890A patent/FR2848648B1/fr not_active Expired - Lifetime
• 2003
  • 2003-12-05 ES ES03796168.7T patent/ES2601492T3/es not_active Expired - Lifetime
  • 2003-12-05 WO PCT/FR2003/003597 patent/WO2004063635A1/fr not_active Application Discontinuation
  • 2003-12-05 HU HUE03796168A patent/HUE032021T2/en unknown
  • 2003-12-05 RU RU2005116981/06A patent/RU2310797C2/ru active
  • 2003-12-05 AU AU2003298420A patent/AU2003298420A1/en not_active Abandoned
  • 2003-12-05 EP EP03796168.7A patent/EP1573253B1/de not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events