Abstract: The apparatus (1) includes a fan (2) having a motor (5), an impeller (6) and a fan scroll (7). The motor (5) being contained in a motor casing (8) having a first end connected to the fan scroll (7) and an opposite second end; and a casing (22) receiving the fan (2), defining around that fan (2) a space (23) for flow of gas for cooling the fan (2) having an inlet (24). The first end of the casing (8) includes at least one first hole (10) and the second end of the casing (8) includes at least one second hole (11) separated from the inlet (24) to prevent capture of the hot cooling gas leaving the casing (8) by the inlet (24).

Abstract: An apparatus for supplying gas, includes a ventilator having a motor, a rotor having vanes and a volute, a conduit for cooling the motor, and a soundproofing housing containing the ventilator and the conduit. The conduit has a shape similar to the wall of the motor and the volute, thus providing a flow path around the motor and the volute. The conduit also includes two housing portions, one of which includes a set of walls, forming a portion of the soundproofing housing and the conduit, and the other also includes a set of walls, forming the matching portion of the soundproofing housing and the conduit. The portions of the soundproofing housing and the conduit on the same portion of the housing are integral with one another, the two portions being suitable for being assembled together around the ventilator such as jointly to form the conduit and the soundproofing housing.

Abstract: This apparatus (1) includes a fan (2) constituted by a motor (5), an impeller (6) and a fan scroll (7), the motor (5) being contained in a motor casing (8) having a first end connected to the fan scroll (7) and an opposite second end; and a casing (22) receiving the fan (2), defining around that fan (2) a space (23) for flow of gas for cooling the fan (2) having an inlet (24). According to the invention the first end of the casing (8) includes at least one first hole (10); and the second end of the casing (8) includes at least one second hole (11) separated from the inlet (24) in such a manner as to prevent capture of the hot cooling gas leaving the casing (8) by the inlet (24).

Abstract: An apparatus for supplying gas, includes a ventilator having a motor, a rotor having vanes and a volute, a conduit for cooling the motor, and a soundproofing housing containing the ventilator and the conduit. The conduit has a shape similar to the wall of the motor and the volute, thus providing a flow path around the motor and the volute. The conduit also includes two housing portions, one of which includes a set of walls, forming a portion of the soundproofing housing and the conduit, and the other also includes a set of walls, forming the matching portion of the soundproofing housing and the conduit. The portions of the soundproofing housing and the conduit on the same portion of the housing are integral with one another, the two portions being suitable for being assembled together around the ventilator such as jointly to form the conduit and the soundproofing housing.

Abstract: An apparatus (1) includes a housing (2), an air feed duct (21) a volute (5), an impeller (4), and a motor (3) for driving the rotation of the impeller (4) so as to generate a centrifugal air flow in the volute (5). The housing (2) has a first part (18a) where wall is intended, after assembly, to extend around the motor (3), espousing the shape of this motor (3) in such a way as to lie at a substantially constant distance from this motor (3); and a second part (18b, 19) where wall is intended, after assembly, to extend around the volute (5), espousing the shape of this volute (5) so as to lie at a substantially constant distance from this volute (5). The housing (2) internally forms a salient axial lump (20) which, after assembly, sits close to the hub (10) of the impeller (4).

Abstract: This apparatus (1) includes an air intake duct, a volute (5) of which the inlet opening (22) communicates with the air intake duct, a first vane rotor (4) located immediately downstream of the inlet opening (22) of the volute (5), a motor (3) for driving the rotor (4), and a motor (3) for rotating the rotor (4) in order to generate a centrifugal air flow in the volute (5). The apparatus further includes: a casing (2) having a tubular portion (10a) located at a substantially constant distance from the motor (3), the casing (2) and the motor (3) thereby together bounding a gas flow passage (15) including at least one gas inlet orifice (20) and at least one gas outlet orifice (16); and a second vane rotor (6) located downstream of the gas inlet orifice (20) rotated in order to generate a forced gas stream in the gas flow passage (15).

Abstract: An apparatus (1) includes a housing (2), an air feed duct (21) a volute (5), an impeller (4), and a motor (3) for driving the rotation of the impeller (4) so as to generate a centrifugal air flow in the volute (5). The housing (2) has a first part (18a) where wall is intended, after assembly, to extend around the motor (3), espousing the shape of this motor (3) in such a way as to lie at a substantially constant distance from this motor (3); and a second part (18b, 19) where wall is intended, after assembly, to extend around the volute (5), espousing the shape of this volute (5) so as to lie at a substantially constant distance from this volute (5). The housing (2) internally forms a salient axial lump (20) which, after assembly, sits close to the hub (10) of the impeller (4).

Abstract: This fan (1) includes a volute (2) whose inlet opening (3) is in communication with the oxygen feed line, an impeller (4) situated immediately downstream of the inlet opening of the volute and including an inlet opening connected to this inlet opening (3) of the volute and outlet orifices (4a) emerging into the volute (2), and an electric motor (5) for rotating the impeller (4). The fan (1) includes: —a compartment (6) in which the motor (5) and, where appropriate, other electric elements or components belonging to the fan (1) are placed, this compartment (6) including an end wall (13) traversed by the shaft of the motor (5) and being supplied with pressurized air, and—a leak collection chamber (7) situated intermediately between the volute (2) and the compartment (6), this chamber likewise being traversed by the shaft of the motor (5) and including a discharge orifice (20).

Abstract: The high-speed centrifugal ventilation device for assisting a patient respiratory function includes a centrifugal fan which is arranged in a casing box and essentially has a wheel actuated by a driver. The wheel is provided with a volute connected to the casing box in such a way that an integral fixed assembly is formed. An elastic device is interposed between the fixed assembly and the driver provided with the wheel which is driven thereby. A dynamic assembly is formed for avoiding transmission of vibrations generated by the wheel and the driver towards the fixed assembly.