Abstract:
1,126,265. Cooling systems. COMPAGNIE FRANCAISE THOMSON HOUSTON-HOTCHKISS BRANDT. 7 July, 1966 [7 July, 1965], No. 30495/66. Heading F4U. A cooling system comprises an enclosure containing a vaporizable liquid and having one wall which is adapted to be exposed to a source of heat, internal projection on said one wall, means for sub-cooling the liquid so that vapour formed adjacent the projections will condense in the body of liquid and elastic means exposed to the liquid for damping pressure fluctuations caused by the vaporization and condensation process. As shown, an annular enclosure 3 surrounds a cylinder 1, e.g. the anode or collector of an electron discharge tube or the cylinder of an I.C. engine, having projections 5, the liquid in the enclosure is sub-cooled by a coil 6 and the elastic means comprises a partly inflated flexible annular body 20. A screen 21 and a filling hole having a stopper 10 are provided. The liquid may be sub-cooled externally of the enclosure (Figs. 5 and 6, not shown) and the screen may be perforated (Fig. 6). The cylinder to be cooled may be closed at one end and the surrounding enclosure bell-shaped (Figs. 1, 7 and 10, not shown). The elastic means may be partspherical and contained in either the enclosure (Fig. 1) or in a sub-chamber screwed into the filling hole in place of the stopper (Fig. 2, not shown); the sub-chamber may alternatively contain a flexible diaphragm (Fig. 3, not shown). In further embodiments (Figs. 7 and 10) the elastic means comprises a vapour pocket at the top of the enclosure. Formulµ for determining the configuration of the internal projections are given.
Abstract:
A thermal control plate is easily removable and replaceable in an ion source. The ion source has a removable anode assembly, including the thermal control plate, that is separable and from a base assembly to allow for ease of servicing consumable components of the anode assembly. The thermal control plate may support a gas distributor and an anode in the anode assembly. The thermal control plate may have a port for passing working gas from one side of the thermal control plate to the other. An interface surface on the thermal control plate may have a pattern of recesses to allow the working gas to disperse underneath the gas distributor.
Abstract:
The present invention provides a double helix coupled vane forward wave crossed-field amplifier utilizing backwall cooling and vane channel cooling in the RF slow wave circuit. Backwall channel cooling is provided for the majority of the anode vanes. Additional cooling is provided exclusively for the output vanes via individual coolant carrying passages in each output vane. The coolant carrying passages are machined into each standard double helix coupled output vane to create a vane channel in the shape of a "U". A tube formed in a corresponding U-shape is inserted and brazed to the machined vane. The vane assembly is then attached to the anode body of which the backwall has holes formed to accept the tubes from each vane. Divided backwall coolant channels are brazed to the outside of the anode, thereby placing in fluid communication the coolant channels to the tubes. Accordingly, coolant is cycled from a first backwall channel, through the output vanes and through the majority of the circumference of the anode via a second backwall channel, and back into the first backwall channel through a conduit and the vanes of the anode are thus preferentially cooled.
Abstract:
There is disclosed a liquid cooled stationary anode tube wherein the anode is adapted for irradiation by an energy beam, and includes a heat exchange surface, said tube includes means for providing a flow of coolant liquid to remove heat from said heat exchange surface by formation of nucleate vapor bubbles on said heat exchange surface, said liquid tending to include a viscous sublayer adjacent to said heat exchange surface, the improvement wherein said heat exchange surface includes at least one of: means for forming pressure gradients in said liquid having a component prependicular to said heat exchange surface to facilitate removal of said nucleate bubbles; and means for breaking up said viscous sublayer to facilitate removal of said nucleate bubbles, and wherein said heat exchange surface comprises a series of curved surfaces, each adjacent the next said curved surfaces being generally circular symmetric about the central axis of said anode and wherein septum members with corresponding curved surfaces, which may be split to permit positioning into close proximity to said heat exchange surface to provide desired coolant flow characteristics over the surfaces of the anode heat exchange surface, said septum members being bonded to axial structure elements that fasten to end members mounted on said anode whereby support is provided to said septum members, desired liquid flow patterns are obtained and rigidity is provided the hot, thin walled anode during operation thereby preventing collapse and obtaining minimal thermal stress through the anode wall.
Abstract:
An electron beam emitter comprises a housing enclosing a cathode capable of emitting electrons within the housing and a window for allowing the emitted electrons to exit the housing, wherein the housing has an opening adapted to be at least partly engaged with a high voltage connector assembly, the assembly being adapted to connect the cathode to a power supply, the electron beam emitter further comprising a cooling flange surrounding the opening and having an interior channel extending between an inlet port and an outlet port for receiving cooling fluid for cooling the high voltage connector assembly. The invention further relates to a method of cooling an electron beam device.
Abstract:
An electron beam emitter comprises a housing enclosing a cathode capable of emitting electrons within the housing and a window for allowing the emitted electrons to exit the housing, wherein the housing has an opening adapted to be at least partly engaged with a high voltage connector assembly, the assembly being adapted to connect the cathode to a power supply, the electron beam emitter further comprising a cooling flange surrounding the opening and having an interior channel extending between an inlet port and an outlet port for receiving cooling fluid for cooling the high voltage connector assembly. The invention further relates to a method of cooling an electron beam device.
Abstract:
A thermal control plate is easily removable and replaceable in an ion source. The ion source has a removable anode assembly, including the thermal control plate, that is separable and from a base assembly to allow for ease of servicing consumable components of the anode assembly. The thermal control plate may support a gas distributor and an anode in the anode assembly. The thermal control plate may have a port for passing working gas from one side of the thermal control plate to the other. An interface surface on the thermal control plate may have a pattern of recesses to allow the working gas to disperse underneath the gas distributor.
Abstract:
The present invention provides a double helix coupled vane forward wave crossed-field amplifier utilizing individually cooled vanes in the RF slow-wave circuit. Specifically, a double helix coupled vane is machined to create a channel in the shape of a "U" on one side of the vane. A vane coolant tube formed in a corresponding U-shape is inserted and brazed to the machined vane. The vane assembly is then attached to the anode body of which the backwall has holes formed to accept the coolant tubes from each vane. Divided backwall coolant channels are brazed to the outside of the anode, thereby placing in fluid communication the coolant channels to the vane coolant tube. Accordingly, coolant is cycled through each vane tube and individual vanes of the anode are thus cooled.