Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
  • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
  • F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F7/00—Ventilation
  • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
  • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
  • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
  • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
  • F24F2012/007—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using a by-pass for bypassing the heat-exchanger
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
  • Y02B30/56—Heat recovery units

Definitions

• the present invention relates to an installation for renewing the air of a plurality of parts, comprising a single-flow air flow generator disposed outside said plurality of parts, for a common extraction of air stale in the plurality of pieces.
• FIG. 1 shows schematically a single-flow controlled mechanical ventilation system, called a single-flow VMC, which comprises a single-flow air flow generator 102, generally consisting of a fan, installed at the same time. outside the room 101, for example in the attic of a dwelling, and which renews the air of a room through the entrance openings 152 and
• a single-flow VMC which comprises a single-flow air flow generator 102, generally consisting of a fan, installed at the same time. outside the room 101, for example in the attic of a dwelling, and which renews the air of a room through the entrance openings 152 and
• the single flow VMC installation comprises a collector duct 120 of the air extracted from the rooms of the dwelling by the flow generator 102, which is common for the extraction of stale air from all the rooms concerned by the renewal of the room. air, this conduit opening normally in a place of the house, separated by a door of each room whose air is desired to renew
• Flow generator 102 causes the entry of fresh air into the room, from the outside environment, via the openings made in the window or the like.
• the air intake is collected from an individual extraction and the air intake is individualized, specific to each room.
• the entry of air into the room is generally hydroregulated, that is to say that the air flow that enters the room is automatically adjusted for indoor humidity to provide good air quality.
• An essential disadvantage of such an installation is that the outgoing air is at room temperature while the incoming air is at outside temperature, thereby causing a change in the temperature of the room whose air is renewed and generally a loss of energy and / or significant discomfort.
• VMC double flow which comprises a generator 160 double flow, consisting for example of a double fan, installed outside the 101, and outside the house, and that renews the air of a room through the inlet 152 and outlet 153 openings of the air in and out of the room 101, formed in two generally opposite locations of the room, for example ceiling and wall, and connected to the generator 160 double flow by individual ducts air intake 161 and air extraction 162, via common conduits of arrival 163 and extraction device 120, as shown in FIG. 2.
• VMC double flow which comprises a generator 160 double flow, consisting for example of a double fan, installed outside the 101, and outside the house, and that renews the air of a room through the inlet 152 and outlet 153 openings of the air in and out of the room 101, formed in two generally opposite locations of the room, for example ceiling and wall, and connected to the generator 160 double flow by individual ducts air intake 161 and air extraction 162, via common conduits of arrival 163 and extraction device 120, as shown in FIG. 2.
• FIG. 2
• the arrows show the direction of movement of the fluid masses in the context of the air renewal of the part; only one part is represented, but the VMC double flow installation allows, thanks to the common conduits as indicated above, to simultaneously renew the air of several rooms of the same house with a common double flow generator.
• the air intake and the air inlet for each room are not individualized but centralized thanks to the common double flow generator.
• An advantage of such a dual flow installation is to be able to control the temperature of the air introduced into the room, from the double flow generator 160 which comprises a heat exchanger, and in particular use the outgoing air to cool or heat the air. air entering as part of a decrease in energy consumption; but a disadvantage of such an installation is that there is no possibility of individually adjusting the air parameters for each room, especially the temperature.
• the common air inlet ducts have the disadvantage of causing pollution, in particular bacteriological, in the rooms distributed by these ducts.
• another drawback lies in the fact that the air inlet ducts in the common and individual rooms must be particularly well insulated in order to preserve the parameters of the incoming air, defined by the common exchanger 160 placed far from the rooms whose air is renewed; such insulation results in a high cost of these conduits.
• the present invention aims to overcome these disadvantages, and to provide other advantages. More specifically, it consists of an installation for renewing the air of a plurality of parts, comprising:
• a single flow air flow generator disposed outside said plurality of parts, common for extracting air from said plurality of parts, characterized in that said installation comprises:
• a double flow heat exchanger disposed inside each of said plurality of pieces, or in a wall defining said each piece of said plurality of pieces, said double flow heat exchanger in each piece of said plurality of pieces comprising: an inlet opening for the flow of air entering the room,
• an air inlet duct in each room connecting the inlet opening of the double-flow heat exchanger of each room, for the flow of air entering the room, to the outside environment, said duct; air inlet in each room of said a plurality of pieces being a duct assigned to said each piece, in which only the flow of air entering said piece flows.
• the present invention makes it possible to benefit from the advantages of a single-flow air exchange installation and a double-flow air renewal installation of the prior art, without having the disadvantages of either of the these two solutions of the prior art.
• it was interposed in the room itself, an individualized heat exchanger between the air inlet in the room and the air outlet of the room, while centralizing the extraction of air from the room.
• all of the ventilated parts by means of a common simple flow generator, advantageously unique, arranged outside the plurality of parts, thus allowing and advantageously simultaneous air renewal of several parts by means of the same generator.
• the extraction of air is advantageously collected from each piece in a common duct arriving at the simple flow generator.
• the air inlet is individualized in the rooms.
• said air intake duct in the room has a length equal to or greater than the thickness of a separating wall between said room and the outside. This feature minimizes the section and length of the air intake duct in the room and thus minimize the maintenance loads of this duct, and the risks of air pollution inside the room. the room. This further reduces the sheath length, thus the load losses and thus the power consumption of the generator.
• the collecting duct may advantageously serve as an evacuation duct for condensates.
• said double-flow heat exchanger is arranged against a wall or a partition inside said part.
• said double-flow heat exchanger is disposed inside a wall or partition defining said part.
• wall is meant the complex constituting the outer wall of the construction comprising an insulating portion and a mechanically resistant structural portion.
• said double flow heat exchanger is disposed in the frame of an opening of said part, separating said part from the outside.
• the exchanger can be hidden and out of sight when in the room.
• said double-flow heat exchanger is a passive exchanger which does not have its own means for generating an air flow capable of passing therethrough.
• This feature allows a simplification of the installation according to the invention and minimizes the power consumption. It offers the generation of a double flow inside the exchanger, from a simple flow generator that generates a vacuum in the room. In addition, it advantageously offers the generation of a double flow through all the exchangers of all parts, from a common generator, single, simple flow.
• said double-flow heat exchanger comprises means for heating the incoming air flow, additional to the exchange wall of said double-flow heat exchanger. This characteristic allows individualization of the heating temperature per room of the dwelling and thus to differentiate the temperatures according to specific areas in the dwelling.
• said double-flow heat exchanger comprises cooling means of the incoming air flow, additional to the exchange wall of said double-flow heat exchanger.
• the installation according to the invention comprises means for controlling the incoming air flow that enters the room, acting from means detecting a human or animal presence in said room.
• This feature helps or forces air entering the room, preferably and only when the room is occupied.
• these means for controlling the flow of incoming air entering the room comprise means for generating the turbine-type incoming airflow.
• This flow generating means may comprise any means of fan, turbine or the like type. It helps the flow generator to force air into the room if necessary. This flow generating means also makes it possible to put a specific piece individually under an overpressure, in order to avoid uncontrolled air entry, and thus to prevent an entry of external pollutants, into said room, originating from the common parts of the building, outside. to said room.
• the installation according to the invention comprises de-icing means of said double-flow heat exchanger.
• FIG. 1 represents a schematic view of a first exemplary embodiment of an air renewal installation of a room, according to the prior art.
• FIG. 2 represents a schematic view of a second exemplary embodiment of an air renewal installation of a room, according to the prior art.
• FIG. 3 represents a schematic view of an exemplary embodiment of an air renewal installation of a plurality of parts, according to the invention.
• FIG. 4 represents an enlarged and isolated detail of the example of FIG.
• FIG. 5 is an exploded perspective view of application of the exemplary embodiment of the air renewal installation of a plurality of parts according to FIG. 3.
• the installation for renewing the air of a plurality of parts 1 shown in FIG. 3 or 5 and partially in FIG. 4, more specifically two parts in the example, comprises: a generator 2 of single-flow airflow disposed outside the two parts 1,
• an internal flux inlet duct 8 connecting the inlet and outlet openings 5 for the air flow entering the room 1, an internal flow outlet duct 9, connecting the openings input 6 and output 7 for the outgoing air flow 11 of the workpiece 1,
• each piece 1 an individual air extraction duct 15 outside the room 1, connecting the common flow generator 2 disposed outside the rooms 1, to the outlet opening 7 of the double heat exchanger 3 flow, for the air flow 11 leaving the room, via a collector duct 20 extractor common to the two parts 1,
• the common stream 2 simple flow air generator is a known type of generator, for example used in the context of a single stream VMC installation of the prior art for example as described above; it may consist of a simple fan which will create a one-way air flow in the air extraction duct 15.
• FIG. 3 or 5 it should be noted that it is shown that two rooms 1 whose air is renewed by the common generator 2, but that this generator can advantageously be common to the extraction of air from several rooms of the same house, a house, a building, etc., via the manifold conduit 20 as shown.
• the generator 2 will be dimensioned in power according to the number of parts that it must support.
• the generator 2 can be disposed inside the house or outside it, but outside the rooms which it must allow the renewal of air, as shown in Figure 1.
• the manifold duct 20 may as shown serve as a conduit for discharging condensate from the exchange wall 12, under the effect of gravity.
• FIG. 4 An example of a double-flow heat exchanger 3 is shown in detail in FIG. 4.
• this heat exchanger is preferably a countercurrent double-flow heat exchanger, the inlet and outlet flows 11 and air moving on one side and the other of the exchange wall 12 in the opposite direction.
• the heat exchanger 3 preferably adopts an elongate chamber shape 22 inside which the exchange wall 12 separates the two internal inlet ducts 8 and flow outlet ducts 9, in the longitudinal direction. of the enclosure 22.
• the inlet opening 4 of the incoming air is disposed at one end of the enclosure or envelope 22, and the outlet opening 5 of the incoming air is disposed at the opposite end longitudinally of the enclosure 1 , the inner inlet duct 8 thus traversing the total or substantially total length of the enclosure 22.
• the inlet openings 6 and outlet 7 of the inner duct 9 of the exchanger are for example both located at the same end of the chamber 22, that of the air inlet 4 of the inner duct 8 of the incoming air flow 10, as shown in FIG. 4.
• the exchanger 3 has a longitudinal baffle 23 forcing the outgoing air flow.
• the inner duct 9 of outgoing air flow 11 comprises a first portion along which the incoming air firstly travels the length of the chamber 22, then a second portion subsequent to the first in the course of which the outgoing air flow 11 travels in the opposite direction the length of the enclosure 22, this second portion of the inner conduit 9 being in contact with the exchange wall 12 as shown in FIG. between the first and second parts of the inner duct 9, the outgoing air flow 11 changes side of the baffle 23, the latter being for example constituted by a rigid insulating wall.
• the double flow heat exchanger 3 of each part 1 is for example arranged against a wall 18 or a partition 21 inside the part 1, so that, according to the invention, a duct 16 air inlet in the room 1 which is an assigned duct and / or individualized relative to this room, wherein circulates only the flow of air entering the room, the air inlet duct 16 then preferably has an equal length, or substantially equal to or greater than the thickness of a partition wall 18 between the part 1 and the outside 17.
• the air inlet duct 16 is in this case a minimum length reduced substantially to the thickness of the wall Separator between the piece 1 and the external medium 17.
• the inlet 4 of the exchanger 3 corresponds to the outlet of the inlet duct 16 and the inlet of the duct 16 can take the form of an opening in the wall, advantageously provided with all necessary protection against bad weather and insect penetration including (not shown).
• the air inlet duct 16 can pass through another room to have a grip on the outside environment, or go through a path embedded in a wall or in a space suitable for join this catch on the outside environment.
• Each air extraction duct 15 from each part 1 passes through a separating wall 19 between the part 1 and the exhaust duct 20, as shown in FIG. 3.
• this air extraction duct 15 can be passed through the room 1 and a partition 21 thereof to join the collector duct 20 which connects the generator 2 common as shown in FIG. 3.
• This extraction duct, individual 15, then common 20, can be advantageously provided to evacuate the condensate.
• the extraction duct 15 can be positioned against or in a wall or a wall, in the floor or in the ceiling, or in a space of the building dedicated to the passage of the ducts.
• the heat exchanger 3 double flow can be disposed within a wall or a partition of each piece 1, or in the frame of an opening of the part 1 separating the latter from the outside 17 (cases not shown), for example in the trunk of a roller shutter.
• the double-flow heat exchanger 3 is a passive heat exchanger that does not have its own means for generating an airflow capable of passing through it. It then operates thanks to the depression caused in the room 1 by the generator 2 through the internal duct 9 of the exchanger 3, which causes the movement of the incoming air flow 10 in the room 1 to through the inlet inlet duct 8 of the incoming air flow 10 of the exchanger.
• FIG. 5 represents a plurality of parts whose ceilings have not been deliberately represented while representing "transparent" walls, in order to make the figure clearer and the exchangers more visible.
• the numerical references affected are those of FIG. 3 as regards a simple difference of representation with respect thereto.
• the air inlet duct 16 is individualized in each room 1 of the plurality of rooms 1.
• Each individual air intake duct 16 for each room 1 may advantageously be of short length and small diameter as explained above, in particular equal to the length of the separative wall of a part 1 from the outside environment.
• the common exhaust air collection conduit 20 is connected to the generator 2 common simple exhaust air flow of the plurality of pieces.
• the dual-flow heat exchanger may include heating means (not shown) of the incoming air flow 10, additional to the exchange wall 12 of the heat exchanger 3 double flow.
• the heat exchanger 3 can be used to provide a caloric energy to the incoming air 10, additional to that which is transferred to it by the outgoing air via the exchange wall 12. This characteristic can be useful when the external medium is at a very low temperature, and / or that it is desired to further use the heat exchanger 3 as a heating device.
• These heating means can be made, in known manner, with an electronic heat pump, for example of Peltier Seebeck effect type, or by any additional appropriate known means for heating the incoming air.
• the heat exchanger 3 double flow comprises cooling means (not shown) of the incoming air flow 10, additional to the exchange wall 12 of the heat exchanger 3 double flow.
• the heat exchanger 3 can be furthermore or alternatively used to withdraw heat energy from the incoming air 10, in particular to lower the temperature of the incoming air flow 10, in particular to beyond the lowering induced by the outgoing air flow 9 when it is at a temperature lower than that of the incoming air.
• These cooling or cooling means can be made, in known manner, with an electronic heat pump, for example of Peltier Seebeck effect type or by flow of microparticles of water on the surface of the exchange wall on which passes the outgoing air, or by any additional appropriate known means to cool the exchange wall.
• the installation according to the invention may comprise control means (not shown) of the air flow entering the room 1, acting from detecting means of a human or animal presence in the room 1 , comprising, for example, means for generating the incoming air flow of fan, turbine or the like type.
• control means (not shown) of the air flow entering the room 1, acting from detecting means of a human or animal presence in the room 1 , comprising, for example, means for generating the incoming air flow of fan, turbine or the like type.
• Such an incoming air flow generator is intended to increase the flow of air entering 10 under the effect of the common generator 2, when a person or an animal is present in the room, in order to accelerate for example the heating or cooling of the incoming air when the exchanger is equipped with such means, which may be coupled to the generator means of the incoming air flow fan, turbine or the like.
• an effect of the generating means of the air flow of the fan, turbine or similar type is to increase the pressure in the room, relative to the depression induced by the main generator 2.
• This flow generator means fan, turbine or the like may be associated with the air intake duct 16 or with the internal duct 8 for the incoming air flow of the exchanger 3.
• the means for generating the air flow entering from type fan, turbine or the like can advantageously be used to modulate the flow rate by electronic regulation.
• the presence detector means allow individualized control for each room of the air flow entering the room.
• the installation according to the invention may comprise defrosting means (not shown) of the heat exchanger 3 double flow, for example by electrical resistance or hot water coil.
• defrosting means (not shown) of the heat exchanger 3 double flow, for example by electrical resistance or hot water coil.
• the individualization of the heat exchangers 3 per room 1 allows defrosting "overrun” avoiding a general shutdown and a general restart of the installation.
• the installation according to the invention may advantageously comprise filter means (not shown) on the air inlets in the exchanger.
• These filter means may be of known form, for example removable cassette or the like. These filter means thus allow individual filtration of the room air.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Central Air Conditioning (AREA)

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• 2008
  • 2008-12-15 FR FR0858576A patent/FR2939873B1/fr not_active Expired - Fee Related
• 2009
  • 2009-12-14 WO PCT/FR2009/052522 patent/WO2010076472A1/fr active Application Filing
  • 2009-12-14 EP EP09803859A patent/EP2370747A1/de not_active Withdrawn
  • 2009-12-14 CN CN2009801566790A patent/CN102317696A/zh active Pending
  • 2009-12-14 US US13/139,695 patent/US20110244780A1/en not_active Abandoned
  • 2009-12-14 CA CA2745461A patent/CA2745461A1/fr not_active Abandoned

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