EQUIPMENT FOR RENEWING AIR IN A PLURALITY OF ROOMS BY MEANS OF A DUAL-FLOW HEAT EXCHANGER PROVIDED IN EACH ROOM
The invention relates to equipment for renewing the air of a plurality of rooms (1), comprising: a common single-flow airflow generator (2) arranged inside the rooms for extracting air from the rooms; a dual flow heat exchanger (3) arranged inside each room (1), comprising: an inlet opening (4) for the airflow (10) entering the room; an outlet opening (5) for the airflow (10) entering the room; an inlet opening (6) for the airflow (11) exiting the room; an outlet opening (7) for the airflow (11) exiting the room; a flow inlet inner duct (8) connecting the inlet (4) and outlet (5) openings for the airflow entering the room; a flow outlet inner duct (9) connecting the inlet (6) and outlet (7) openings for the airflow exiting the room; an exchange wall (12) having a first surface (13) defining a portion of said flow inlet inner duct (8) and a second surface (14) opposite the first defining a portion of the flow outlet inner duct (9); a plurality of individual ducts (15) for extracting air from the rooms, an individual extraction duct for a room connecting the flow generator to the outlet (7) of the heat exchanger (3) of the room for the airflow (11) exiting the room via a common air extraction collecting duct (20); an air inlet duct (16) in each room, individually allocated to each room, in which flows only the airflow (10) entering said room, and connecting the inlet opening (4) of the dual flow heat exchanger (3) of each room, for the airflow (10) entering the room (1), to the external environment (17).
The present invention relates to equipment for renewing the air in a plurality of rooms, comprising a single-flow airflow generator located outside the said plurality of rooms, for common extraction of polluted air from the plurality of rooms.
The prior art includes several equipment of this type.
For example, as shown schematically in
Other equipment is also known for example, as shown schematically in
The object of the present invention is to overcome these drawbacks and to provide other advantages. More precisely, it consists of equipment for renewing the air in a plurality of rooms, including:
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- a single-flow airflow generator located outside the said plurality of rooms, common for the extraction of air from said plurality of rooms, characterised in that the said equipment comprises:
- a dual-flow heat exchanger located in each room of the said plurality of rooms, or in a wall defining the said room of the said plurality of rooms, the said dual-flow heat exchanger in each room of the said plurality of rooms comprising:
- an inlet opening for the airflow entering the room,
- an outlet opening for the airflow entering the room,
- an inlet opening for the airflow exiting the room,
- an outlet opening for the airflow exiting the room,
- a flow inlet inner duct, connecting the inlet and outlet openings for the airflow entering the room,
- a flow outlet inner duct, connecting the inlet and outlet openings for the airflow exiting the room,
- an exchange wall having a flat surface defining a portion of the said flow inlet inner duct, and where the second surface opposite the first, defines a portion of the said flow outlet inner duct,
- a plurality of individual ducts from for extracting air flow from the rooms, an individual extraction duct for a room connecting the said airflow generator located outside the said plurality of rooms, to the outlet of the dual-flow heat exchanger, for the airflow exiting the room, via a common air extraction collecting duct,
- an air inlet duct in each room, connecting the inlet of the dual-flow heat exchanger in each room, for the airflow entering the room, to the external environment, the said air inlet duct in each room of the said plurality of rooms being a duct allocated to said each room, in which flows only the airflow entering the said room.
The present invention offers the advantages of a single-flow air renewal equipment and of a dual-flow air renewal equipment of the prior art, without the drawbacks of either one or the other of these two prior art solutions. To this end, in each room there is interposed an individual heat exchanger between the air inlet into the room and the air outlet from the room, while at the same time having centralised air extraction from all of the ventilated rooms by means of a common single-flow generator, advantageously a single unit, located outside the plurality of the rooms, thus enabling in particular and advantageously the simultaneous renewal of the air in several rooms by means of the same generator. The air extraction is advantageously collected from each room in a common duct arriving at the single-flow generator. Air inlet is individualised in the rooms. A reduction in the length and cross-section of the air supply ducts to the rooms is thereby obtained, while enabling each of these ducts to follow a minimum route between the inlet of the individualised heat exchanger and the external environment, hence reducing costs and the risk of pollution. In addition, by segregating the air inlets room by room, and by thus eliminating the common air inlet ducts, the pollution risk is thus divided and is thereby limited to one room and independently from one room to another. Total individualised control of the air renewal in a room is also achieved.
According to an advantageous characteristic, the said air inlet duct into the room has a length equal to or greater than the thickness of a separating wall between the said room and the outside.
This characteristic makes it possible to minimise the cross-section and length of the air inlet duct into the room and thus to minimise the cost of maintaining the duct and the risks of air pollution inside the room. The length of the ductwork is also reduced, thereby reducing pressure losses, in turn reducing the energy consumption of the generator.
According to an advantageous characteristic, the said extraction duct removing the air from the room passes through a separating wall between the said room and an air extraction collecting duct.
The collecting duct can advantageously serve as a duct for the removal of condensate.
According to an advantageous characteristic, the said dual-flow heat exchanger is disposed against a wall or a partition inside the said room.
According to an advantageous characteristic, the said dual-flow heat exchanger is disposed inside a wall or a partition defining the said room.
The term wall is understood to mean the complex constituting the exterior skin of the structure comprising an insulating portion and a mechanically strong structural portion.
According to an advantageous characteristic, the said dual-flow heat exchanger is disposed in the frame of an opening in the said room, separating the said room from the outside.
Thus, according to one or the other of the preceding alternatives, the heat exchanger can be concealed and out of view for the occupants of the room.
According to an advantageous characteristic, the said dual-flow heat exchanger is a passive heat exchanger which does not include its own means for generating an airflow designed to pass through it.
This characteristic makes it possible to simplify the equipment according to the invention and minimises its energy consumption. It provides the generation of a dual flow inside the heat exchanger, from a single-flow generator which generates negative pressure in the room. Furthermore, it advantageously provides the generation of a dual flow through all of the heat exchangers in all of the rooms, from a single common dual-flow generator.
According to an advantageous characteristic, the said dual-flow heat exchanger includes means for heating the incoming airflow, in addition to the heat-exchange wall of the said dual-flow heat exchanger.
This characteristic makes it possible to individualise the heating temperature for each room of the dwelling and therefore to differentiate the temperatures according to specific zones within the dwelling.
According to an advantageous characteristic, the said dual-flow heat exchanger includes means for cooling the incoming airflow, in addition to the heat-exchange wall of the said dual-flow heat exchanger.
This characteristic makes it possible to individualise the reduction of the heating temperature in each room of the dwelling and therefore to differentiate the temperatures according to specific zones within the dwelling.
According to an advantageous characteristic, the equipment according to the invention comprising means for controlling the incoming airflow entering the room, actuated by means for detecting the presence of humans or animals in the said room.
This characteristic makes it possible to assist or to force the entry of air into the room, advantageously and solely when the room is occupied.
According to an advantageous characteristic, the means of controlling the incoming airflow into the room can include means for generating the incoming airflow of the turbine type.
This flow generating means can include any type of fan, turbine, or the like. It serves to assist the airflow generator to force the incoming air into the room as the case may be. This flow generating means also makes it possible to place a given room individually under positive pressure so as to prevent any uncontrolled air ingress, and therefore to avoid the ingress of external pollutants into the said room from the common areas of the structure exterior to the said room.
According to an advantageous characteristic, the equipment according to the invention includes means for defrosting the said dual-flow heat exchanger.
Other characteristics will become apparent upon reading the following description of an example embodiment of air renewal equipment according to the invention, accompanied by the attached drawings, the example being non-limitative and provided for illustrative purposes.
The equipment for renewing the air in a plurality of rooms 1 shown in
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- a single-flow airflow generator 2 located outside the two rooms 1,
- a dual-flow heat exchanger 3 located for example inside each room 1, the dual-flow heat exchanger 3 in each room 1 including:
- an inlet opening 4 for the incoming airflow 10 into the room 1,
- an outlet opening 5 for the incoming airflow 10 into room 1,
- an inlet opening 6 for the outgoing airflow 11 from the room 1,
- an outlet opening 7 for the outgoing airflow 11 from the room 1,
- a flow inlet inner duct 8, connecting the inlet opening 4 and outlet opening 5 for the airflow 10 entering the room 1,
- a flow outlet inner duct 9, connecting the inlet opening 6 and outlet opening 7 for the airflow 11 exiting from the room 1,
- a heat-exchange wall 12 of which one surface 13 constitutes a portion of the flow inlet inner duct 8, and of which a second surface 14 opposite the first surface constitutes a portion of the flow outlet inner duct 9,
- for each room 1: an individual duct 15 for extracting air from the room 1, connecting the common airflow generator 2 located outside the rooms 1, to the outlet opening 7 of the dual-flow heat exchanger 3, for the airflow 11 exiting the room, via an air extraction collecting duct 20 common to the two rooms 1,
- two individual air inlet ducts 16 to the two rooms 1, one for each room, connecting for a room 1, the inlet opening 4 of the dual-flow heat exchanger 3, for the airflow 10 entering the room 1 in question, to the external environment 17.
The common single-flow airflow generator 2 is a generator of a known type, for example used as part of a single-flow CMV equipment of the prior art for example as described above; it can consist of a single fan which creates a single-direction airflow in the air extraction duct 15. In the example of
Example of dual-flow heat exchanger 3 is represented in detail in
An inlet opening 4 is located at one end of casing/envelope 22, and air outlet opening 5 located at the opposite end, longitudinally, of casing 1, inlet inner duct 8 thus running along most of the total length of casing 22.
Inlet openings 6 and outlet 7 in inner duct 9 of the heat exchanger are both located at the same end of casing 22, that of inlet opening 4 of inner duct 8 of airflow inlet 10, as represented in
For example and as represented in
In the case of a closed room (not shown), air inlet duct 16 can pass through another room to connect to the external environment or pass through a housing embedded in a wall or in an appropriate space to meet up with said connection to the external environment.
Each air extraction duct 15 outside each room 1, passes through a separating wall 19 between room 1 and extraction collecting duct 20 for air extraction as represented in
As an alternative, dual-flow heat exchanger 3 can be located inside a wall or a partition of each room 1, or yet again in the frame of an opening of the room 1, separating the latter from the external environment 17 (not shown), for example in the casing of a roller blind.
Advantageously, as shown in
In said
Advantageously and as appropriate, the dual-flow heat exchanger can include methods of heating (not shown) for the incoming airflow 10, in addition to exchange wall 12 of dual-flow heat exchanger 3. In this way, heat exchanger 3 can be used to provide heat energy to incoming airflow 10, over and above that which is transferred to it by the air exiting via heat exchange wall 12. This can be useful when the external environment is at a very low temperature and for when desired to also use heat exchanger 3 as a heating apparatus. Such means of heating can be carried out, as is known, using an electronic heating pump, for example of the Peltier Seebeck effect, or by any known appropriate additional means to heat incoming air.
Advantageously a dual-flow heat exchanger 3 includes cooling equipment (not shown) for incoming airflow 10, additional to an exchange wall 12 of dual-flow heat exchanger 3. With regards to methods of heating, the heat exchanger 3 can also be used to withdraw heat energy from incoming airflow 10, notably to reduce the temperature of the incoming airflow 10, in particular in excess of the reduction induced by outgoing airflow 9 when it is at a temperature lower than that of the incoming air. These methods for cooling and refreshment can be carried out, as is known, with an electronic heat pump of the Peltier Seebeck effect type, for example, or by flowing micro-particles of water on the surface of the heat exchanger wall on which the outgoing air passes, or by any known appropriate additional means to cool the heat exchanger partition.
Advantageously, the equipment according to the invention can include control equipment (not shown) for incoming airflow 10 into room 1, using detecting equipment for human or animal presence in room 1, comprising, for example, a generator of airflow such as a fan, turbine or equipment of a similar type. The purpose of such an incoming airflow generator is to increase the flow of incoming airflow 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 the cooling of the incoming air when the heat exchanger is equipped with such equipment, which can be coupled to a generator of airflow such as a fan, turbine or equipment of a similar type. One added effect of a generator of airflow such as a fan, turbine or equipment of a similar type is to increase the pressure inside the room, as against the slight vacuum induced by the main generator 2. Said generator of airflow such as fan, turbine or equipment of a similar type can be associated to an air inlet duct 16 or to the inner duct 8 for incoming airflow heat exchanger 3. The generator of airflow such as fan, turbine or equipment of a similar type favourably serves to modulate the flow by electronic regulation. Presence detecting equipment provides individualised control for each room on the airflow entering into the room.
The equipment corresponding to the invention may include defrosting equipment (not shown) for heat exchanger 3, using electrical components for example, or by means of a hot water battery. Individualisation of heat exchangers 3 in rooms 1 enables “distributed” defrosting, thus avoiding general stoppage and general restarting of the equipment.
The equipment corresponding to the invention may favourably include filter equipment (not shown) for the air entering the heat exchanger. This filtering equipment can be of a known form, for example a removable cassette, or similar. Such filtering equipment also provides individual filtration of the air in the room.
Claims
1. Equipment for renewing air in a plurality of rooms (1), comprising:
- a single flow airflow generator (2) located outside of said plurality of rooms (1), common to the extraction of air from said plurality of rooms, characterised in that said equipment includes:
- a dual-flow heat exchanger (3) located in each room (1) of said plurality of rooms, or in a wall defining each room of said plurality of rooms, said dual-flow heat exchanger in each room of said plurality of rooms comprising: an inlet opening (4) for the airflow (10) entering the room, an outlet opening (5) for the airflow (10) entering the room, an inlet opening (6) for the airflow (11) exiting the room, an outlet opening (7) for the airflow (11) exiting the room, a flow inlet inner duct (8) connecting the inlet openings (4) and outlet openings (5) for the incoming airflow (10) entering the room (1), a flow outlet inner duct (9) connecting the inlet (6) and outlet openings (7) for the airflow (11) exiting the room (1), an exchange wall (12) having a first surface (13) defining a portion of said flow inlet inner duct (8), and where the second surface (14) opposite the first, defining a portion of said flow outlet inner duct (9),
- a plurality of individual ducts (15) for extracting air from the rooms (1), an individual extraction duct (15) for a room (1) connecting said airflow generator (2) located outside said plurality of rooms, to the outlet (7) of the dual-flow heat exchanger (3), for the airflow (11) exiting the room, via a common air extraction collecting duct (20),
- an air inlet duct (16) in each room, connecting the inlet (4) of the dual-flow heat exchanger (3) in each room, for the airflow (10) entering the room (1), to the external environment (17), said air inlet duct (16) in each room (1) of said plurality of rooms being a duct allocated to said each room, in which only the airflow (10) entering said room.
2. Equipment according to claim 1, characterised in that said air inlet duct (16) into the room (1), has a length equal or greater than the thickness of a separating wall (18) between said room (1) and the external environment (17).
3. Equipment according to claim 1, characterised in that said air extraction duct (15) from the room (1), passes through a separating wall (19) between said room and said air extraction collecting duct (20).
4. Equipment according to claim 1, characterised in that said dual-flow heat exchanger (3) is located against a wall (18) or a partition (21) inside said room (1).
5. Equipment according to claim 1, characterised in that said dual-flow heat exchanger (3) is located in the wall or partition defining said room (1).
6. Equipment according to claim 1 characterised in that said dual-flow heat exchanger (3) dual-flow equipment is located in the frame of an opening of said room (1), separating said room from the external environment (17).
7. Equipment according to claim 1, characterised in that said dual-flow heat exchanger (3) is a passive heat exchanger which does not include its own means for generating a flow of air able to pass through it.
8. Equipment according to claim 1, characterised in that said dual-flow heat exchanger (3) includes means for heating the incoming airflow (10), additional to the heat exchange wall (12) of said dual-flow heat exchanger (3).
9. Equipment according to claim 1, characterised in that said dual-flow heat exchanger (3) includes means for cooling the incoming airflow (10), additional to the heat exchange wall (12) of said dual-flow heat exchanger (3).
10. Equipment according to claim 1, characterised in that it comprises means for controlling the incoming airflow (10) entering the room (1), actuated by means for detecting the presence of humans or animals in said room.
11. Equipment according to claim 10, characterised in that the means for controlling incoming airflow (10) entering into the room (1) includes means for generating the incoming airflow of the turbine type.
12. Equipment according to claim 1, characterised in that it comprises methods to defrost said dual-flow heat exchanger (3).
13. Equipment according to claim 2, characterised in that said air extraction duct (15) from the room (1), passes through a separating wall (19) between said room and said air extraction collecting duct (20).
14. Equipment according to claim 2, characterised in that said dual-flow heat exchanger (3) is located against a wall (18) or a partition (21) inside said room (1).
15. Equipment according to claim 3, characterised in that said dual-flow heat exchanger (3) is located against a wall (18) or a partition (21) inside said room (1).
16. Equipment according to claim 2, characterised in that said dual-flow heat exchanger (3) is located in the wall or partition defining said room (1).
17. Equipment according to claim 3, characterised in that said dual-flow heat exchanger (3) is located in the wall or partition defining said room (1).
18. Equipment according to claim 2 characterised in that said dual-flow heat exchanger (3) dual-flow equipment is located in the frame of an opening of said room (1), separating said room from the external environment (17).
19. Equipment according to claim 3 characterised in that said dual-flow heat exchanger (3) dual-flow equipment is located in the frame of an opening of said room (1), separating said room from the external environment (17).
20. Equipment according to claim 2, characterised in that said dual-flow heat exchanger (3) is a passive heat exchanger which does not include its own means for generating a flow of air able to pass through it.
Type: Application
Filed: Dec 14, 2009
Publication Date: Oct 6, 2011
Inventors: Pierre Vironneau (Garonne), Bernard Seosse (Saint Lon Les Mines), Pierre Aphecetche (Saint Vincent de Paul), Frédéric Caramanos (Bidart), Pascal Cazeres (Biarritz), Alain Avril (Paris)
Application Number: 13/139,695
International Classification: F24F 7/007 (20060101);