WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F28B　STEAM OR VAPOUR CONDENSERS (condensation of vapours B01D 5/00; steam engine plants having condensers F01K; liquefaction of gases F25J; details of heat-exchange and heat-transfer arrangements of general application F28F)

F28B 1/00 Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser

F28B 1/02 ・using water or other liquid as the cooling medium

F28B 1/04 ・・employing moving walls

F28B 1/06 ・using air or other gas as the cooling medium

F28B 1/08 ・・employing moving walls

F28B 3/00 Condensers in which the steam or vapour comes into direct contact with the cooling medium

F28B 3/02 ・by providing a flowing coating of cooling liquid on the condensing surface

F28B 3/04 ・by injecting cooling liquid into the steam or vapour (F28B 3/08 takes precedence)

F28B 3/06 ・by injecting the steam or vapour into the cooling liquid (F28B 3/08 takes precedence)

F28B 3/08 ・with rotatable members

F28B 5/00 Condensers employing a combination of the methods covered by main groups F28B 1/00 or F28B 3/00; Other condensers

F28B 7/00 Combinations of two or more condensers, e.g. provision of reserve condenser

F28B 9/00 Auxiliary systems, arrangements, or devices

F28B 9/005 ・{for protection against freezing}

F28B 9/02 ・for feeding steam or vapour to condensers

F28B 9/04 ・for feeding, collecting, and storing cooling water or other cooling liquid

F28B 9/06 ・・with provision for re-cooling the cooling water or other cooling liquid

F28B 9/08 ・for collecting and removing condensate

F28B 9/10 ・for extracting, cooling, and removing non-condensable gases

F28B 11/00 Controlling arrangements with features specially adapted for condensers (control arrangements in general G05)

F28B 2001/00 Condensers in which the steam or vapour is separate from the cooling medium by walls, e.g. surface condenser

F28B 2001/06 ・using air or other gas as the cooling medium

F28B 2001/065 ・・with secondary condenser, e.g. reflux condenser or dephlegmator