ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F27D0021040000 Arrangements of indicators or alarms 1
F27D0025000000 Devices for removing incrustations 1
F27D0027000000 Stirring devices for molten material (F27D0003140000 takes precedence);; 1
F27D0099000000 Subject matter not provided for in other groups of this subclass 1
F28 HEAT EXCHANGE IN GENERAL 1
F28B STEAM OR VAPOUR CONDENSERS (condensation of vapours B01D0005000000; condensation during pretreatment of gases prior to electrostatic precipitation of dispersed particles B03C0003014000; steam engine plants having condensers F01K; liquefaction of gases F25J; details of heat-exchange or heat-transfer arrangements of general application F28F) 1
F28B0001000000 Condensers in which the steam or vapour is separated from the cooling medium by walls, e.g. surface condenser 1
F28B0001020000 using water or other liquid as the cooling medium 1
F28B0001040000 employing moving walls 1
F28B0001060000 using air or other gas as the cooling medium 1
F28B0001080000 employing moving walls 1
F28B0003000000 Condensers in which the steam or vapour comes into direct contact with the cooling medium 1
F28B0003020000 by providing a flowing coating of cooling liquid on the condensing surface 1
F28B0003040000 by injecting cooling liquid into the steam or vapour (F28B0003080000 takes precedence);; 1
F28B0003060000 by injecting the steam or vapour into the cooling liquid (F28B0003080000 takes precedence);; 1