Patent ID: 6688848
Filing Date: 2004-02-10
Classification: B29C,B29L,F04D,Y10S

Abstract:
A propeller fan, characterized in thatwhen coordinates in a cylindrical coordinate system having a z axis as a rotation axis of the propeller fan are (r, &thgr;, z), a curved shape defined by a r coordinate value, a &thgr; coordinate value and a z coordinate value indicated in tables 1 and 2 below is determined as a base shape of a surface of a blade of said propeller fan, the surface of the blade of said propeller fan being configured by a curved surface obtained by enlarging or reducing said base shape in at least one of r, &thgr; and z directions, said tables 1 and 2 defined as follows: TABLE 1&thgr;r0.0420.0830.1250.1670.2080.250.2920.3330.3750.4â€‚0.1450.1810.2140.2460.2760.3040.3290.3530.1370.1640.1900.2140.2370.2610.2840.3070.450.0850.1340.1760.2150.2490.2800.3100.3370.3630.0800.1180.1520.1830.2110.2390.2650.2910.3170.5â€‚0.0740.1240.1680.2090.2460.2820.3150.3450.3750.0610.1050.1440.1790.2110.2420.2710.3000.3280.550.0440.1020.1530.2000.2420.2820.3190.3540.3860.0360.0870.1330.1740.2110.2460.2790.3100.3400.6â€‚0.0770.1370.1900.2380.2830.3250.3640.3990.0650.1200.1680.2110.2500.2860.3200.3520.650.0500.1190.1800.2340.2850.3310.3740.4130.0430.1050.1600.2100.2540.2950.3320.3670.7â€‚0.0960.1670.2280.2830.3330.3790.4220.0870.1520.2100.2610.3070.3490.3870.750.0720.1520.2220.2840.3390.3890.4350.0650.1370.2010.2580.3080.3540.3950.8â€‚0.0430.1330.2120.2820.3460.4020.4520.0400.1190.1910.2550.3110.3610.4080.850.1140.2030.2820.3500.4100.4650.1030.1830.2520.3130.3690.4190.9â€‚0.0930.1930.2780.3510.4150.4730.0860.1740.2500.3170.3760.4310.950.1800.2740.3520.4200.4800.1650.2510.3240.3870.444&thgr;r0.4170.4580.50.5420.5830.6250.6670.7080.750.4â€‚0.3750.3950.4140.4290.4380.3290.3500.3710.3920.4140.450.3880.4120.4330.4520.4660.4740.3410.3650.3870.4090.4300.4530.5â€‚0.4020.4280.4530.4750.4940.5080.5150.3550.3810.4050.4280.4500.4730.4980.550.4170.4450.4730.4980.5210.5400.5540.5590.3690.3970.4240.4490.4730.4970.5220.5490.6â€‚0.4330.4640.4940.5220.5490.5730.5930.6060.3840.4140.4430.4710.4980.5240.5500.5770.650.4500.4840.5170.5470.5770.6050.6300.6500.6630.4000.4330.4640.4940.5240.5520.5800.6070.6370.7â€‚0.4620.5010.5380.5720.6040.6340.6620.6880.7090.4230.4570.4890.5210.5510.5800.6080.6360.6640.750.4780.5190.5580.5950.6290.6620.6920.7200.7460.4350.4730.5100.5440.5770.6080.6380.6660.6930.8â€‚0.4980.5410.5820.6210.6590.6940.7260.7560.7850.4500.4900.5290.5670.6040.6380.6700.7000.7290.850.5140.5600.6040.6460.6860.7250.7610.7930.8210.4660.5100.5520.5930.6320.6700.7050.7360.7640.9â€‚0.5260.5750.6210.6660.7090.7510.7910.8260.8580.4810.5280.5720.6150.6570.6990.7370.7720.8020.950.5350.5860.6350.6810.7260.7690.8110.8500.8840.4960.5460.5940.6400.6850.7280.7690.8070.840&thgr;r0.7920.8330.8750.9170.95810.7â€‚0.7230.6960.750.7690.7840.7220.7530.8â€‚0.8090.8290.8450.7540.7790.8090.850.8480.8730.8950.9070.9130.7900.8160.8400.8640.8930.9â€‚0.8850.9080.9300.9490.9630.9690.8290.8520.8750.8970.9190.9430.950.9140.9390.9600.9760.9900.9970.8690.8940.9160.9360.9570.979BOSS RATIO &ngr; = 0.35 TABLE 2r&thgr;z0.3830.6410.4530.4460.4660.6600.4870.4800.5690.7240.5770.5710.6970.8140.7210.7140.8590.9840.9230.9160.9241.0340.9840.9780.9720.9810.9980.9910.9930.9100.9850.9771.0000.8380.9530.9461.0000.7570.9000.8931.0000.6780.8290.8231.0000.5390.6800.6741.0000.4030.5150.5091.0000.3340.4150.4111.0000.2600.2790.2751.0000.2090.1570.1540.9720.1810.0920.0900.9460.1700.0770.0750.8770.1470.0510.0490.8470.1380.0440.0420.8080.1250.0380.0370.7620.1100.0330.0310.7280.0980.0280.0260.7040.0900.0260.0240.6800.0790.0230.0220.6410.0620.0150.0130.5840.0340.0060.0040.5210.0140.0270.020