ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F28C0001080000 Arrangements for recovering heat from exhaust steam 1
F28C0001100000 Arrangements for suppressing noise 1
F28C0001120000 Arrangements for preventing clogging by frost 1
F28C0001140000 comprising also a non-direct contact heat exchange 1
F28C0001160000 Arrangements for preventing condensation, precipitation or mist formation, outside the cooler (F28C0001140000 takes precedence);; 1
F28C0003000000 Other direct-contact heat-exchange apparatus 1
F28C0003020000 the heat-exchange media both being gases or vapours 1
F28C0003040000 the heat-exchange media both being liquids 1
F28C0003060000 the heat-exchange media being a liquid and a gas or vapour (temperators for cooling steam F22) 1
F28C0003080000 with change of state, e.g. absorption, evaporation, condensation (generating steam under pressure F22) 1
F28C0003100000 one heat-exchange medium at least being a fluent solid, e.g. a particulate material 1
F28C0003120000 the heat-exchange medium being a particulate material and a gas, vapour, or liquid 1
F28C0003140000 the particulate material moving by gravity, e.g. down a tube 1
F28C0003160000 the particulate material forming a bed, e.g. fluidised, on vibratory sieves 1
F28C0003180000 the particulate material being contained in rotating drums 1