A fan assembly includes a base, a body including an air inlet, impeller and motor driving the impeller to draw an air flow through the air inlet, an air outlet and an interior passage conveying air to the air outlet and extending about an opening through which air from outside the fan assembly is drawn by air emitted from the air outlet. A motorized oscillation mechanism housed within the base oscillates the body relative to the base about an axis and includes a second motor, a drive member driven by the second motor, and a driven member which is driven by the drive member to rotate relative to the base about the axis. The body is mounted on the driven member for rotation therewith. Interlocking members retain the body on the driven member and serve to guide tilting movement of the body relative to the base about a tilt axis.

An ejector for a refrigerating machine, including a main body crossed by a conduit for passage of refrigerant fluid and having a compartment which comprises a seating, which is in communication with said conduit, and a mouth for inlet of refrigerant fluid; a nozzle which can be coupled with the seating and having an internal hole, for passage of the refrigerant fluid a shutter having an end which can be coupled with the hole to close the hole.

An ejector for a refrigerating machine, including a main body crossed by a conduit for passage of refrigerant fluid and having a compartment which comprises a seating, which is in communication with said conduit, and a mouth for inlet of refrigerant fluid; a nozzle which can be coupled with the seating and having an internal hole, for passage of the refrigerant fluid a shutter having an end which can be coupled with the hole to close the hole.

Device for depressurizing at least one chamber (E1, E2) of a turbomachine (1) intended to accommodate at least one bearing (7, 8) of a rotor of said turbomachine, which bearing is supplied with lubricating oil under pressure by a feed pump (15) and by an oil feed duct (16), said device comprising at least one breather tube (10) connected to said chamber in order to extract an oil mist therefrom, an oil separator (30) able to separate the oil from the air in said mist and a jet pump (11) pneumatically connected to said chamber by said breather tube and said oil separator, said pump comprising a pump tube (17) into which there open a primary circuit (21) supplied with fluid under pressure via a fluid feed duct and a secondary circuit (22) connected to said oil separator in order to place the chamber under a reduced pressure, characterized in that the primary circuit (21) comprises at least two pressurized-fluid injectors (13, 24) positioned in said tube and fed independently of one another.

Device for depressurizing at least one chamber (E1, E2) of a turbomachine (1) intended to accommodate at least one bearing (7, 8) of a rotor of said turbomachine, which bearing is supplied with lubricating oil under pressure by a feed pump (15) and by an oil feed duct (16), said device comprising at least one breather tube (10) connected to said chamber in order to extract an oil mist therefrom, an oil separator (30) able to separate the oil from the air in said mist and a jet pump (11) pneumatically connected to said chamber by said breather tube and said oil separator, said pump comprising a pump tube (17) into which there open a primary circuit (21) supplied with fluid under pressure via a fluid feed duct and a secondary circuit (22) connected to said oil separator in order to place the chamber under a reduced pressure, characterized in that the primary circuit (21) comprises at least two pressurized-fluid injectors (13, 24) positioned in said tube and fed independently of one another.

An ejector, or arrangement having the ejector, has a compact structure requiring little installation space, permitting a sufficient pumping action, and, in case of an error, the error can be unambiguously detected and diagnosed as the source of the problem, which ejector for insertion into a receptacle, has a base element with a throat that fluid-connects a first opening and a second opening to each other, whereby the throat has a narrowest part that is fluid-connected to an associated third opening, and whereby the throat widens, at least in sections, towards the first and second openings, wherein, as a functional component, the ejector can be inserted into and/or positioned in a mating receptacle in the correct orientation so as to fulfill its function as a jet pump in an arrangement.

An ejector, or arrangement having the ejector, has a compact structure requiring little installation space, permitting a sufficient pumping action, and, in case of an error, the error can be unambiguously detected and diagnosed as the source of the problem, which ejector for insertion into a receptacle, has a base element with a throat that fluid-connects a first opening and a second opening to each other, whereby the throat has a narrowest part that is fluid-connected to an associated third opening, and whereby the throat widens, at least in sections, towards the first and second openings, wherein, as a functional component, the ejector can be inserted into and/or positioned in a mating receptacle in the correct orientation so as to fulfill its function as a jet pump in an arrangement.

A jet pump assembly is adapted to be releasably attached to a tubular member of a tubular string in an oil well. The jet pump may be pumped out of the tubular string to the surface by a reverse flow of power fluid down the well between the tubular string and the casing of the well. Consequently the jet pump may be serviced or reconfigured to a direct pumping mode without the necessity of a wire line or other apparatus. An attachment tool is provided that attaches to a fishing neck on the jet pump and also includes a plurality of seal cups. The attachment tool includes a rod which is adapted to release a locking mechanism positioned in the jet pump.

A vapor compression system (200; 400; 600; 700; 800; 900; 1000) comprises a plurality of valves (260, 262, 264; 260) controllable to define a first mode flowpath and a second mode flowpath. The first mode flowpath is sequentially through: a compressor (22); a first heat exchanger (30); a first nozzle (228; 624); and a separator (48), and then branching into: a first branch returning to the compressor; and a second branch passing through an expansion device (70) and a second heat exchanger (64) to the rejoin the flowpath between the first heat exchanger and the separator. The second mode flowpath is sequentially through: the compressor; the second heat exchanger; a second nozzle (248; 625); and the separator, and then branching into: a first branch returning to the compressor; and a second branch passing through the expansion device and first heat exchanger to the rejoin the flowpath between the first heat exchanger and the separator.

An ejector for a sealed system includes a motive liquid passage with a converging section, a throat and a diverging section. The throat of the motive liquid passage is disposed between the converging section of the motive liquid passage and the diverging section of the motive liquid passage. The ejector also includes a plurality of nucleation sites at the converging section of the motive liquid passage.