Temperatureinstelleinrichtung

摘要

1279975 Cooling pistons DEFENCE SECRETARY OF STATE FOR 22 July 1969 [26 July 1968] 35729/68 Heading F2T [Also in Divisions C7 and F4] The temperature of a collector plate 17 upon which metals may be deposited in vacuo from the vapour phase is controlled by the amount of exchange fluid e.g. deionized water, which is allowed to contact the interior of a tube 18 attached to the plate, by circulation from an inlet 29 to an outlet 43 along inner coaxial tubes forming hollow shaft assemblies 12, 20 of a piston 19, the fluid circulating inside tube 18 to the left of the piston so that the position of the piston determines the area of contact of the fluid. The fluid is recirculated after cooling by means not shown. The collector plate and tube may be rotatable and the tube wall may be of greater thickness adjacent the plate. The fluid is circulated from the side of the piston remote from the plate, through passages 35 in the piston which direct the fluid against the interior wall of the tube and is then removed through the hollow shaft. A thermocouple 63 and electrical heater 64 are mounted on the plate, the thermocouple enabling the temperature to be monitored and the heater serving as a fine temperature control or a means of heating the collector plate to a temperature higher than can be obtained by contact with the vapour.