Classifications

• • 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
  • F24F13/02—Ducting arrangements
  • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
  • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
• • 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
  • F24F13/18—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

Definitions

• the present invention relates to an air intake system for indoor ventilation of a building, in particular for a dwelling or a tertiary building.
• Buildings receiving people including housing or tertiary premises such as schools or offices, usually include a ventilation system of the various rooms to renew the air, including a system for extracting air from the premises, and air inlets from outside to compensate for this extraction.
• the main purpose of room air renewal is to remove air pollutants related to the presence of occupants, the presence of equipment or machines used in these rooms, as well as those emitted by the building itself. even.
• the pollutants of the air are in particular carbon dioxide CO2, moisture and volatile organic compounds called "VOC".
• the ventilation of the premises can be natural, with air ducts from different rooms to open to the outside, which have a thermal draw activated by the difference in natural pressure when the air is colder outside. When the outside temperature is higher the pressure differential between the inside and the outside is lost, and the air flow may be insufficient.
• Ventilation of the premises can also be achieved by a controlled mechanical ventilation called "VMC", comprising a turbine driven by a permanently rotating electric motor, which generates a vacuum for activate the flow in the air ducts opening outwards.
• VMC controlled mechanical ventilation
• the ventilation may comprise a variable operation, including a fixed, modulated or intermittent flow.
• an intermediate ventilation system also called hybrid ventilation, comprises a turbine having at a stop a small pressure drop in the duct, which is stopped when the thermal draft of the natural ventilation is sufficient, and which rotates at a speed suitable variable when the natural ventilation is insufficient to compensate for the too low flow rate.
• the speed of the turbine can be adjusted automatically according to the outside temperature which activates the natural ventilation.
• the air is extracted by extraction vents placed in technical rooms, such as the kitchen, the toilet or the bathroom, and the air is introduced into the rooms.
• living rooms such as living room, office, living room or bedrooms.
• the air inlets generally form grilles placed above the doors or windows, or at the top of the walls, which first gives a sweep of the living rooms, then technical rooms where the air is extracted. , generally representing the premises where pollutants are more numerous.
• the air intake grilles have a surface attached to the wall surrounding an outward opening, and a shape that directs the air inward including in some cases a passage section adjustment system which can be partially or fully closed.
• This setting can be manual, or automated with automatic modulation based on the detection of a pollutant.
• the present invention is intended to avoid these disadvantages of the prior art.
• an air intake system for ventilation of a building comprising an air inlet device having a fastening surface provided for fixing on a wall comprising an opening towards the external, this system being remarkable in that it comprises a spacer comprising a first face adapted to be fixed on the wall by surrounding the outer opening, and a second substantially opposite face provided to receive the attachment surface of the input device. of air, this spacer having from the opening to the outside, a direct air passage to the interior of the building forming a constant flow, and an internal air passage to the input device forming a main flow.
• the air intake system according to the invention may further comprise one or more of the following features, which may be combined with each other.
• the direct air passage of the spacer to the interior of the building is intended to be directed upwards. In this way the constant air flow is not directed at the users.
• the two faces of the spacer provided for the fasteners are parallel. The air inlet device then finds the same orientation that it has without the spacer.
• the two faces of the spacer provided for the fasteners form an angle which inclines the air inlet device downwards.
• the angle formed by the two faces of the spacer may be between 15 and 45 °.
• the air inlet device comprises a flow control means. Whatever the setting of the flow, we obtain at least the constant air flow.
• the flow rate control means may comprise an automation according to a measurement of pollutants in the air.
• the main air flow is intended to be directed upwards.
• the air inlet device and the spacer may comprise aligned holes for attachment to the wall with the same screws. In this way, no specific fixing means for the spacer is added, the assembly being fixed in the same manner as the air inlet device alone.
• the outer contour of the spacer corresponds to that of the air inlet device.
• a set having aligned outer surfaces which is aesthetic.
• FIGS. 1a and 1b show in cross section an air inlet device attached to a partition, successively presented in the closed position and in the open position;
• FIG. 2 shows in perspective an air intake system according to the invention, comprising the air inlet device attached to a parallel-face spacer;
• FIG. 3 shows this set exploded view;
• FIGS. 4a and 4b are cross sections of this assembly along the section plane IV-IV, successively presenting the air inlet device in the closed position and in the open position;
• FIG. 7 and 8 show successively in perspective and in cross section along the section plane VIII-VIII, an air inlet system according to a variant, comprising the air inlet device fixed on a brace with faces inclined;
• FIG. 9 is a diagram showing the air flow rates for an air intake system with and without the invention.
• FIG. 1 shows an exterior wall of a building 2 having an outward opening 4 extending horizontally, receiving on its outer wall disposed on the front side indicated by the arrow "AV", an awning 6 disposed above this opening protecting the entrance from rain or snow.
• the air intake device 10 comprises a rigid structure of thin thickness, having a constant cross section, comprising a lower box of rigidity 14 of substantially square section which is fitted below the opening 4.
• An adjustable opening valve 18 is held by a longitudinal hinge disposed just below the opening 4, near the wall wall 2, which is fixed above the box 14.
• the valve 18 comprises a slightly domed shape turned towards the rear, has in the closed position shown in FIG. 1 at its upper edge which bears on a longitudinal sealing strip 20.
• the valve 18 pushed backwards bears against a substantially parallel fixed partition 16 which connects the rigidity box 14 to the rear face 12.
• valve 18 In the closed position the valve 18 completely closes the air inlet facing the opening 4. In the open position the valve 18 forms a progressive guide air flow F coming from the outside to direct it upwards , in order to avoid directing it to people in the room.
• the control of the adjustable valve 18 can be manual or motorized.
• FIGS. 2, 3, 4a and 4b show an additional air inlet spacer 30 having a flat front face fixed to the wall wall 2, and a parallel flat rear face receiving in an adjusted manner the same contour, the surface front plane of the air inlet device 10.
• the flat front surface of the air inlet device 10 may have a contour different from that of the air inlet spacer 30.
• the spacer 30 comprises in the lower part a lower box 32 fitted at the bottom of the opening 4, which receives the support of the rigidity box 14 of the air inlet device 10.
• the spacer 30 comprises in the upper part a flow guide 34 having an aerodynamic profile, having a forward-facing tip, which separates above a small section allowing a minimum constant flow of air F1 directed upwards, and below a large section allowing a main air flow directed horizontally towards the adjustable valve 18 of the air inlet device 10.
• the small section of the constant air flow F1 smaller than the large section of the main air flow F advantageously between 15 to 50% of this large section, represents in particular about 40% of this section.
• the spacer 30 has at each longitudinal end a tip 40 which extends beyond the air passage, having a bore receiving a fixing screw to be fixed on the wall of the wall.
• the outer canopy 6 also has end pieces 40 each having a bore receiving a fixing screw on the outer wall of the wall 2.
• the air intake device 10, the spacer 30 and the outer canopy 6 comprise regularly spaced transverse partitions or bars 42, which stiffen these elements in order to prevent their deformation, without hindering the air flows. parallel to these forms.
• all the elements 6, 10, 30 are formed by a molding of a plastic material, which makes it possible to simply and economically produce complex shapes.
• a standard air inlet device 10 comprising an automated means for controlling its flow rate, for example with an integrated pollutant measurement sensor.
• Figures 5 and 6 show an air inlet device 10 according to a variant, comprising an adjustable opening valve 18 flat, presented in semi-open position. Compared to the previous air inlet device shown in Figure 2, the air inlet device 10 has a reduced height, and a larger width ending rearwardly by a rear face 12 strongly rounded.
• a flat fixed internal partition 16 forms a rear stop of the adjustable valve 18 when it is fully open, which has on its rear face a succession of parallel horizontal ribs 50.
• FIGS. 7 and 8 show a spacer 30 comprising the air outlet of the constant flow F1 facing upwards, and the rear face which is inclined with respect to the front face downwards, at an angle advantageously between 15 and 45 °, which is in this example of 30 °.
• This spacer 30 has at its base a width almost zero, which gives it a minimum footprint.
• FIG. 9 shows, as a function of the adjustment R of the opening valve 18, ranging from an almost closed position 0 to a fully open position 1, the air flows D given by the set of air inlets.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Building Environments (AREA)
• Air-Flow Control Members (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=56119526

Family Applications (1)

Country Status (6)

Family Cites Families (5)

• 2016
  • 2016-03-14 FR FR1652123A patent/FR3048759B1/fr not_active Expired - Fee Related
• 2017
  • 2017-03-14 LT LTEP17719646.6T patent/LT3430322T/lt unknown
  • 2017-03-14 WO PCT/FR2017/050577 patent/WO2017158279A1/fr active Application Filing
  • 2017-03-14 EP EP17719646.6A patent/EP3430322B1/de active Active
  • 2017-03-14 PL PL17719646T patent/PL3430322T3/pl unknown
  • 2017-03-14 HU HUE17719646A patent/HUE054321T2/hu unknown

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