ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
F22B0033120000 Self-contained steam boilers, i.e. comprising as a unit the steam boiler, the combustion apparatus, the fuel storage, accessory machines, and equipment 1
F22B0033140000 Combinations of low- and high-pressure boilers 1
F22B0033160000 of forced-flow type 1
F22B0033180000 Combinations of steam boilers with other apparatus 1
F22B0035000000 Control systems for steam boilers (regulation or control of steam power plants F01K0007000000; for regulating feed-water supply F22D; for controlling superheat temperature F22G0005000000; control of combustion F23N) 1
F22B0035020000 for steam boilers with natural convection circulation 1
F22B0035040000 during starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers 1
F22B0035060000 for steam boilers of forced-flow type 1
F22B0035080000 of forced-circulation type 1
F22B0035100000 of once-through type 1
F22B0035120000 operating at critical or supercritical pressure 1
F22B0035140000 during the starting-up periods, i.e. during the periods between the lighting of the furnaces and the attainment of the normal operating temperature of the steam boilers 1
F22B0035160000 responsive to the percentage of steam in the mixture of steam and water 1
F22B0035180000 Applications of computers to steam-boiler control 1
F22B0037000000 Component parts or details of steam boilers (venting devices F16K0024000000; steam traps or like apparatus F16T) 1