Device for controlling temperature in a room

Claim 1

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through a pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice and said delivery orifice, coaxial air streams including a central air stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice and said delivery orifice; and said pipe (70) being a tubular element with a circular cross section having an axis (yy') thereby creating an annular and external air stream at very low speed which protects said central air stream at a higher speed, whereby different perturbations of the air stream are avoided.

Claim 2

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through a pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice and said delivery orifice, coaxial air streams including a central air stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice and said delivery orifice; and said pipe (70) being a tubular element with a circular cross section having an axis (yy') thereby creating an annular and external air stream at very low speed which protects said central air stream at a higher speed, whereby different perturbations of the air stream are avoided.

Claim 9

A method for regulating the temperature in a room using a pulsed low-velocity air flow (qs), in which the room is provided with an extraction vent (11, 72) and a delivery vent (5, 74) and a pipe (4, 70) in communication with a pressurized air supply duct (1) and in communication with the extraction vent and the delivery vent via an extraction orifice (4A) and a delivery orifice (4B), the extraction vent (11, 72) opening out into said pipe (4, 70) and the delivery vent (5, 74) opening out from the pipe (4) into the room; and comprising forming in said pipe (4, 70), between the extraction orifice (4A) and delivery orifice (4B), a first annular stream (15) derived from an air flow delivered through said pressurized air supply duct (1) and a second annular air stream (17) surrounding said first air stream (15) for causing thereof to form a central air stream derived from an exhaust of air from the room through said extraction vent (11, 72) supplied therefrom through the extraction orifice (4A) to form coaxial air streams which includes the central stream formed from said first air stream (15) derived from said pressurized air supply duct (1) and forming the first air stream and an inner air stream of the coaxial air streams in which the air moves at a high velocity upon introduction of said pressurized air supply duct (1) and a peripheral annular air stream forming an outer air stream of the coaxial air streams and derived from said second air stream (17) introduced into said pipe (4, 70) from said extraction orifice (4A) in which the air moves at a low velocity and surrounding said central air stream in which the air moves at the high velocity.

Claim 10

A method for regulating the temperature in a room using a pulsed low-velocity air flow (qs), in which the room is provided with an extraction vent (11, 72) and a delivery vent (5, 74) and a pipe (4, 70) in communication with a pressurized air supply duct (1) and in communication with the extraction vent and the delivery vent via an extraction orifice (4A) and a delivery orifice (4B), the extraction vent (11, 72) opening out into said pipe (4, 70) and the delivery vent (5, 74) opening out from the pipe (4) into the room; and comprising forming in said pipe (4, 70), between the extraction orifice (4A) and delivery orifice (4B), a first annular stream (15) derived from an air flow delivered through said pressurized air supply duct (1) and a second annular air stream (17) surrounding said first air stream (15) for causing thereof to form a central air stream derived from an exhaust of air from the room through said extraction vent (11, 72) supplied therefrom through the extraction orifice (4A) to form coaxial air streams which includes the central stream formed from said first air stream (15) derived from said pressurized air supply duct (1) and forming the first air stream and an inner air stream of the coaxial air streams in which the air moves at a high velocity upon introduction of said pressurized air supply duct (1) and a peripheral annular air stream forming an outer air stream of the coaxial air streams and derived from said second air stream (17) introduced into said pipe (4, 70) from said extraction orifice (4A) in which the air moves at a low velocity and surrounding said central air stream in which the air moves at the high velocity.

Claim 14

A device for regulating the temperature in a room using pulsed low-velocity air flow (qs), comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a convergent element (2) in communication with an air flow (qc) coming from a plant; a pipe (4) in communication with said convergent element (2) and said air flow (qc) through a pressurized air supply duct (1), said pipe (4) having an extraction orifice (4A) and a delivery orifice (4A), said extraction vent (11, 72) opening into said pipe (4) through said extraction orifice (4A) and said delivery vent (5, 74) opening out from said pipe (4) through said delivery orifice (4B); means for forming in said pipe (4), between said extraction orifice and said delivery orifice, coaxial air streams including a central air stream (15) in which the air moves at a high velocity and a peripheral annular air stream (17) surrounding said central air stream in which the air moves at low velocity; and said convergent element (2) comprising, from upstream to downstream, a first cylindrical part (80) having an outer diameter (D) equal to the inner diameter of said air supply duct (1) and a second part having an overall conical frustrum form (82) formed by a series of corrugations (84).

Claim 15

A device for regulating the temperature in a room using pulsed low-velocity air flow (qs), comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a convergent element (2) in communication with an air flow (qc) coming from a plant; a pipe (4) in communication with said convergent element (2) and said air flow (qc) through a pressurized air supply duct (1), said pipe (4) having an extraction orifice (4A) and a delivery orifice (4A), said extraction vent (11, 72) opening into said pipe (4) through said extraction orifice (4A) and said delivery vent (5, 74) opening out from said pipe (4) through said delivery orifice (4B); means for forming in said pipe (4), between said extraction orifice and said delivery orifice, coaxial air streams including a central air stream (15) in which the air moves at a high velocity and a peripheral annular air stream (17) surrounding said central air stream in which the air moves at low velocity; and said convergent element (2) comprising, from upstream to downstream, a first cylindrical part (80) having an outer diameter (D) equal to the inner diameter of said air supply duct (1) and a second part having an overall conical frustrum form (82) formed by a series of corrugations (84).

Claim 19

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice (4A) and said delivery orifice (4B); and said pipe 70 being a tubular element with a circular cross section having an axis (yy').

Claim 20

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice (4A) and said delivery orifice (4B); and said pipe 70 being a tubular element with a circular cross section having an axis (yy').

Claim 21

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); and means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice (4A) and said delivery orifice (4B); said combining means including a delivery duct (6), and extraction duct (13), and at least one convergent element (2), and wherein said central air stream (15) and said annular air stream (17) are created by at said least one convergent element (2) delivering an air stream which ultimately becomes said central air stream (15) from upstream to downstream, said one convergent element (2) having an upstream inlet orifice connected to said air supply duct (1) and a downstream outlet orifice (3) opening out into said pipe (4), said extraction vent (11, 72) and said delivery (5, 74) vent being respectively connected to said extraction and delivery orifices by said extraction duct (13) and said delivery (6) duct, the part most upstream of the intersection surface between the extraction duct (13) and said pipe (4, 70) being disposed immediately downstream of said downstream outlet orifice (3) and said annular air stream (17) being created by the air stream introduced through said extraction orifice into said pipe (4, 70) surrounding said central air stream (15); said pipe (70) being a tubular element with a circular cross-section having an axis (yy') and said downstream outlet orifice has a diameter (d) and said convergent element (2) has an axis (uu') and said delivery duct (6) is disposed at a distance (L) from said outlet orifice (3) of said convergent element (2); and the diameter (D) of said pipe (4) into which said convergent element (2) opens out is equal to at least twice the diameter (d) of said outlet orifice (3) and said delivery duct (6) is disposed at a distance (L) from said outlet orifice (3) which varies between at least seven and thirteen times said diameter (d) of said outlet orifice (3).

Claim 22

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); and means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice (4A) and said delivery orifice (4B); said combining means including a delivery duct (6), and extraction duct (13), and at least one convergent element (2), and wherein said central air stream (15) and said annular air stream (17) are created by at said least one convergent element (2) delivering an air stream which ultimately becomes said central air stream (15) from upstream to downstream, said one convergent element (2) having an upstream inlet orifice connected to said air supply duct (1) and a downstream outlet orifice (3) opening out into said pipe (4), said extraction vent (11, 72) and said delivery (5, 74) vent being respectively connected to said extraction and delivery orifices by said extraction duct (13) and said delivery (6) duct, the part most upstream of the intersection surface between the extraction duct (13) and said pipe (4, 70) being disposed immediately downstream of said downstream outlet orifice (3) and said annular air stream (17) being created by the air stream introduced through said extraction orifice into said pipe (4, 70) surrounding said central air stream (15); said pipe (70) being a tubular element with a circular cross-section having an axis (yy') and said downstream outlet orifice has a diameter (d) and said convergent element (2) has an axis (uu') and said delivery duct (6) is disposed at a distance (L) from said outlet orifice (3) of said convergent element (2); and the diameter (D) of said pipe (4) into which said convergent element (2) opens out is equal to at least twice the diameter (d) of said outlet orifice (3) and said delivery duct (6) is disposed at a distance (L) from said outlet orifice (3) which varies between at least seven and thirteen times said diameter (d) of said outlet orifice (3).

Claim 23

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); and means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), two coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice and said delivery orifice; said combining means including a delivery duct (6), an extraction duct (13), and at least one convergent element (2), and wherein said central air stream (15) and said annular air stream (17) are created by at said least one convergent element (2) delivering an air stream which ultimately becomes said central air stream (15) from upstream to downstream, said one convergent element (2) having an upstream inlet orifice connected to said air supply duct (1) and a downstream outlet orifice (3) opening out into said pipe (4), said extraction vent (11, 72) and said delivery vent (5, 74) being respectively connected to said extraction and delivery orifices by said extraction duct (13) and said delivery (6) duct, the part most upstream of the intersection surface between the extraction duct (13) and said pipe (4, 70) being disposed immediately downstream of said downstream outlet orifice (3) and said annular air stream (17) being created by the air stream introduced through said extraction orifice into said pipe (4, 70) surrounding said central air stream (15); and said convergent element (2) comprising a first outer conical frustrum (2a) and a second inner conical frustrum (2b) coaxial with said first outer conical frustrum (2a) and fixed with said first conical frustrum (2a) by radial and longitudinal spacers (22).

Claim 24

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); and means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), two coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice and said delivery orifice; said combining means including a delivery duct (6), an extraction duct (13), and at least one convergent element (2), and wherein said central air stream (15) and said annular air stream (17) are created by at said least one convergent element (2) delivering an air stream which ultimately becomes said central air stream (15) from upstream to downstream, said one convergent element (2) having an upstream inlet orifice connected to said air supply duct (1) and a downstream outlet orifice (3) opening out into said pipe (4), said extraction vent (11, 72) and said delivery vent (5, 74) being respectively connected to said extraction and delivery orifices by said extraction duct (13) and said delivery (6) duct, the part most upstream of the intersection surface between the extraction duct (13) and said pipe (4, 70) being disposed immediately downstream of said downstream outlet orifice (3) and said annular air stream (17) being created by the air stream introduced through said extraction orifice into said pipe (4, 70) surrounding said central air stream (15); and said convergent element (2) comprising a first outer conical frustrum (2a) and a second inner conical frustrum (2b) coaxial with said first outer conical frustrum (2a) and fixed with said first conical frustrum (2a) by radial and longitudinal spacers (22).

Claim 25

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); and means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), two coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice and said delivery orifice; said combining means including a delivery duct (6), an extraction duct (13), and at least one convergent element (2), and wherein said central air stream (15) and said annular air stream (17) are created by at said least one convergent element (2) delivering an air stream which ultimately becomes said central air stream (15) from upstream to downstream, said one convergent element (2) having an upstream inlet orifice connected to said air supply duct (1) and a downstream outlet orifice (3) opening out into said pipe (4), said extraction vent (11, 72) and said delivery (5, 74) vent being respectively connected to said extraction and delivery orifices by said extraction duct (13) and said delivery (6) duct, the part most upstream of the intersection surface between the extraction duct (13) and said pipe (4, 70) being disposed immediately downstream of said downstream outlet orifice (3) and said annular air stream (17) being created by the air stream introduced through said extraction orifice into said pipe (4, 70) surrounding said central air stream (15); said duct (1) having an inner diameter (d) and said at least one convergent element comprising a conical frustrum (2), said conical frustrum (2) having a large base with an outer diameter identical to the inner diameter (D) of said duct (1); and said longitudinal axis (uu') of said outlet orifice (3) of said convergent element (2) being offset transversely with respect to the longitudinal axis (yy') of said supply duct (1).

Claim 26

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); and means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice (4A) and said delivery orifice (4B), two coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice and said delivery orifice; said combining means including a delivery duct (6), an extraction duct (13), and at least one convergent element (2), and wherein said central air stream (15) and said annular air stream (17) are created by at said least one convergent element (2) delivering an air stream which ultimately becomes said central air stream (15) from upstream to downstream, said one convergent element (2) having an upstream inlet orifice connected to said air supply duct (1) and a downstream outlet orifice (3) opening out into said pipe (4), said extraction vent (11, 72) and said delivery (5, 74) vent being respectively connected to said extraction and delivery orifices by said extraction duct (13) and said delivery (6) duct, the part most upstream of the intersection surface between the extraction duct (13) and said pipe (4, 70) being disposed immediately downstream of said downstream outlet orifice (3) and said annular air stream (17) being created by the air stream introduced through said extraction orifice into said pipe (4, 70) surrounding said central air stream (15); said duct (1) having an inner diameter (d) and said at least one convergent element comprising a conical frustrum (2), said conical frustrum (2) having a large base with an outer diameter identical to the inner diameter (D) of said duct (1); and said longitudinal axis (uu') of said outlet orifice (3) of said convergent element (2) being offset transversely with respect to the longitudinal axis (yy') of said supply duct (1).

Claim 27

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice and said delivery orifice (4B), two coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice (4A) and said delivery orifice (4B); and a convergent element (2) comprising, from upstream to downstream, a first cylindrical part (80) having an outer diameter (D) equal to the inner diameter of said air supply duct (1) and a second part having an overall conical frustrum form (82) formed by a series of corrugations (84).

Claim 28

A device for regulating the temperature in a room (9) using pulsed low-velocity air flow (qs) to provide a silent flow of air to a room at a low output speed, comprising: an extraction vent (11, 72) and a delivery vent (5, 74) disposed in the room (9); a pipe (4, 70) having an extraction orifice (4A) and a delivery orifice (4B), said pipe (4) being in communication with a plant for receiving an air flow (qc) through pressurized air duct (1) forming a central and axial air flow therein for delivery of air flow (qc) through said delivery orifice (4B) to said delivery vent (5, 74) and for receiving an air flow taken up by said extraction vent (11, 72) for delivery to said pipe (4), said extraction vent (11, 72) opening out into said pipe (4, 70) and said delivery orifice (4B) opening out to said delivery vent (5, 74) from said pipe (4, 70) into the room (9); means combining the air flow from said extraction vent (11, 72) through said extraction orifice (4A) with the air flow directed to said delivery vent (5, 74) from said pressurized air duct (1) for forming in said pipe (4, 70), between said extraction orifice and said delivery orifice (4B), two coaxial air streams including a central stream (15) in which the air moves at a high velocity towards said delivery vent (5, 74) and a peripheral annular air stream (17) delivered from said extraction orifice (4A) and surrounding said central air stream (15) in which the air moves at low velocity between said extraction orifice (4A) and said delivery orifice (4B); and a convergent element (2) comprising, from upstream to downstream, a first cylindrical part (80) having an outer diameter (D) equal to the inner diameter of said air supply duct (1) and a second part having an overall conical frustrum form (82) formed by a series of corrugations (84).