ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F28F0013040000 by preventing the formation of continuous films of condensate on heat-exchange surfaces, e.g. by promoting droplet formation 1
F28F0013060000 by affecting the pattern of flow of the heat-exchange media 1
F28F0013080000 by varying the cross-section of the flow channels 1
F28F0013100000 by imparting a pulsating motion to the flow, e.g. by sonic vibration 1
F28F0013120000 by creating turbulence, e.g. by stirring, by increasing the force of circulation (F28F0013080000 takes precedence);; 1
F28F0013140000 by endowing the walls of conduits with zones of different degrees of conduction of heat 1
F28F0013160000 by applying an electrostatic field to the body of the heat-exchange medium 1
F28F0013180000 by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing 1
F28F0017000000 Removing ice or water from heat-exchange apparatus 1
F28F0019000000 Preventing the formation of deposits or corrosion, e.g. by using filters 1
F28F0019010000 by using means for separating solid materials from heat-exchange fluids, e.g. filters 1
F28F0019020000 by using coatings, e.g. vitreous or enamel coatings 1
F28F0019040000 of rubber; of plastics material; of varnish 1
F28F0019060000 of metal 1
F28F0021000000 Constructions of heat-exchange apparatus characterised by the selection of particular materials 1