摘要:
Venturi devices and systems incorporating the same are disclosed. The Venturi devices include a lower body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a first Venturi gap and a second Venturi gap downstream of the first Venturi gap at a position that divides the discharge section into a first portion between the first and second Venturi gaps and a second portion leading away from the second Venturi gap, and include an upper body defining a suction passageway in fluid communication with both the first and second Venturi gaps. The motive section and the discharge section converge toward the first Venturi gap.
摘要:
La présente invention se rapporte à un alternateur de pression pouvant générer à la fois une pression négative désirée et une pression positive désirée, selon les besoins, dans la même conduite d'aspiration (2) sans utiliser de clapets de conduite séparés. La régulation des pressions positive et négative peut s'effectuer aisément. L'alternateur de pression est construit en forme d'éjecteur et on obtient la pression positive en fermant l'ouverture d'éjection de l'éjecteur au moyen d'un couvercle de fermeture séparé (8 et 8a) à ressort/régulé par pression (9). Le même couvercle de fermeture (8 et 8a) fonctionne également comme clapet de sécurité et empêche l'accés de la pression positive dans la conduite (2). L'ouverture ou la fermeture du couvercle de fermeture (8 et 8a) servant à arrêter l'écoulement du milieu déchargé de l'éjecteur peut agir soit sur une composante de l'écoulement (3) produit par l'éjecteur soit sur un écoulement séparé régulé par le clapet (4).
摘要:
An aspirator system (100; 200; 804) for inflating an inflatable evacuation device (142; 806) includes an aspirator body (118; 218) having a plurality of flapper doors (106A - 106B; 206A - 206B) configured to open to allow intake of atmospheric gas. The aspirator system (100; 200; 804) also includes an aspirator barrel (102; 202) connecting the aspirator body (118; 218) to the inflatable evacuation device (142; 806), having connected inflation chambers (120; 220) wrapping around a circumference of the aspirator barrel (102; 202) and arranged along a length of the aspirator barrel, and being configured to provide an aspirator barrel chamber (112; 212) for guiding the atmospheric gas to the inflatable evacuation device (142; 806) when the aspirator barrel (102; 202) is inflated. The aspirator system (100; 200; 804) also includes a showerhead nozzle (104; 204) connected to the connected inflation chambers (120; 220), configured to direct high-pressure gas to inflate the aspirator barrel (102; 202) and compel intake of atmospheric gas through the plurality of flapper doors (106A - 106B; 206A - 206B), to inflate the inflatable evacuation device (142; 806).
摘要:
A diagnostic apparatus for a powder coating material pump includes a detector that uses pressure or flow to detect a fault in the pump, the diagnostic apparatus being external the pump, internal the pump or a combination of external and internal the pump. Another diagnostic device is provided for a powder coating material pump, and includes a light source in close proximity to the pump, the light source having an on condition and an off condition wherein one or both of the on condition and off condition provides information about the pump performance. An exemplary pump is a dense phase powder coating material pump.
摘要:
This Venturi pump (2), which can be used for sucking powder from a supply (A), diluting same, then feeding it to a gun (D) via a conveyor pipe, comprises an outer body (20), at least one powder suction duct (22), at least two air connections (24, 28), of which a first air connection (24) is capable of supplying an injector (284) to create a vacuum inside the suction duct (22) and a second air connection (28) is capable of supplying a dilution air circuit separate from the powder flow, at least one powder outlet nozzle (26), centred on an axis of diffusion (Y26), the inlet of which is located downstream from the first air connection (24) and the suction duct, at least one protection barrier (282), disposed inside the dilution air circuit and at least one outlet tip (284) of the dilution circuit, disposed around the nozzle (26) and also connected to the conveyor pipe (T). The protection barrier comprises a non-return valve (282) that radially surrounds the nozzle (26).
摘要:
An Environmental Control System (ECS) 10 for an aircraft includes a ram air system having a ram inlet 12 and a ram outlet 28. The ECS includes a cabin air compressor motor, a diverter valve 20, and a dedicated outlet 60. The cabin air compressor motor has a motor inlet passage and a motor outlet passage with the motor inlet passage being coupled to the ram inlet. The diverter valve includes a first diverter inlet, a first diverter outlet, and a second diverter outlet. The first diverter inlet is coupled to the motor outlet passage, The dedicated outlet 60 is connected to the first diverter outlet in a flight mode of operation of the aircraft and the ram outlet 28 is connected to the second diverter outlet in a ground mode of operation of the aircraft.
摘要:
Venturi devices and systems incorporating the same are disclosed. The Venturi devices include a lower body defining a passageway having a motive section and a discharge section spaced a distance apart from one another to define a first Venturi gap and a second Venturi gap downstream of the first Venturi gap at a position that divides the discharge section into a first portion between the first and second Venturi gaps and a second portion leading away from the second Venturi gap, and include an upper body defining a suction passageway in fluid communication with both the first and second Venturi gaps. The motive section and the discharge section converge toward the first Venturi gap.
摘要:
An aspirator for inflating an aircraft evacuation slide, emergency raft or other inflatable device includes a flexible, collapsible aspirator barrel that is inflated during operation to form a substantially rigid tube. According to one embodiment, the inflatable support member receives a flow of high pressure air directly from the aspirator injector nozzle assembly. According to another embodiment, the collapsible aspirator barrel receives a flow of high pressure gas directly from the high pressure inflation source. Because the aspirator barrel of the present invention is collapsible, the present invention occupies significantly less space when stored than an equivalent aspirator with a rigid aspirator barrel.
摘要:
Venturi devices and systems incorporating the Venturi devices are disclosed. The Venturi devices have a body defining a passageway that has a motive section and a discharge section spaced a distance apart from one another to define a Venturi gap. Both the motive section and the discharge section converge toward the Venturi gap. Also, the body defines a first suction port and a second suction port generally opposite one another that are each in fluid communication with the Venturi gap. The Venturi gap is generally wider proximate both the first suction port and the second suction port than at a generally central point therebetween. In a system, the Venturi device has its motive section fluidly connected to a source of motive pressure and one or both of the first and second suction ports in fluid communication with a device requiring vacuum.