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Oil-free Air Blowers

Home ? Products ? Oil-free Air Blowers

Core technology comes from Kaishan North America R & D Center. The "Y-4" Oilless Screw Air Blower Profile invented by Dr. Tang Yan, a world-famous compressor expert, is adopted. Its super-energy-efficient design idea, perfect workmanship and quality assurance, plus world-top machining test facilities, can ensure the high energy efficiency of products, with their reliability reaching the world-leading level.

	Highly-efficient screw rotor profile Y-4, exclusively developed for blast blowers.
	Multiple Vi (volume ratio) design, aimed at the demands of different pressure working conditions, providing the main engine with the best efficiency. Precision synchronizer gears, higher efficiency and higher reliability.
	Highly-efficient motor, a large starting torque.
	Air intake filter---high-efficiency low pressure ?drop, air inflow and outflow silencer design, plus acoustic enclosure, lower noise.
	Complete system design, including air filter, silencer, main engine, motor, starting cabinet, control system, lubricating system, cooling system, acoustic enclosure and base.
	Forced lubricating system, more steady and reliable operation of main engine.
	Kaishan smart controller, colored touch screen, image-text display, friendly interface, simple and easy operation.

In contrast with Root's blower, Oil-free Air Blowers can save 35% energy at most

The Energy Efficiency Contrast Diagram between Screw Air Blower and Traditional Root's Air Blower.

The pressure/ volume diagram of screw blast blower

Energy consumption / Energy saving

◆ Thermodynamic energy consumption

◆ Energy saving

4→1: Suction

1→2: Internal compression. Intermeshing of opposing rotors, decrease of volume between teeth, and increase of pressure.

2→3: Exhausting. The air is discharged from the pipe.

The pressure/ volume diagram of Root's blast blower

Energy consumption

◆ Thermodynamic energy consumption

4→1: Suction

1→2: The air volume remains unchanged. Air is compressed outside due to the backpressure of pipe network.

2→3: Exhausting. The air is discharged from the pipe.

Performance Advantages of Screw Air Blower Contrasted with Root's Air Blower:

1. Higher efficiency, lower noise;

2. Allowing a higher rotating speed and tooth-crest speed;

3. Capable of reaching a higher discharge pressure;

4. A lower pressure fluctuation;

5. Root's blast blower does not have internal compression.

The main engine of Root's blast blower

The main engine of screw blast blower.

GF/GFV Series Oil Free Screw Blower Sizing Data:

NO.	Rotating speed sequence	Working pressure(bar)	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0	1.1	1.2
GF100	1	Flow(m³/hr)	258	253	249	248	246	244	243	241	240	239
	1	Motor power(kW)	4	5.5	7.5	7.5	7.5	7.5	11	11	11	11
	2	Flow(m³/hr)	292	287	283	281	278	276	275	273	272	271
	2	Motor power(kW)	4	5.5	7.5	7.5	11	11	11	11	11	15
	3	Flow(m³/hr)	341	335	330	328	325	322	321	319	317	316
	3	Motor power(kW)	5.5	7.5	7.5	11	11	11	11	15	15	15
	4	Flow(m³/hr)	379	372	366	364	361	358	357	354	352	351
	4	Motor power(kW)	5.5	7,5	7.5	11	11	11	15	15	15	15
	5	Flow(m³/hr)	417	410	404	401	398	394	393	390	388	387
	5	Motor power(kW)	5.5	7.5	11	11	11	15	15	15	15	18.5
	6	Flow(m³/hr)	465	457	450	447	443	440	438	435	433	431
	6	Motor power(kW)	7.5	7.5	11	11	15	15	15	15	18.5	18.5
	7	Flow(m³/hr)	523	514	506	503	498	494	492	489	486	484
	7	Motor power(kW)	7.5	11	11	15	15	15	18.5	18.5	18.5	22

NO.	Rotating speed sequence	Working pressure(bar)	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1‘0	1.1	1.2
GF160	1	Flow(m³/hr)	576	570	566	565	563	560	559	557	556	555
	1	Motor power(kW)	7.5	11	15	15	15	18.5	18.5	18.5	22	22
	2	Flow(m³/hr)	670	664	659	657	655	652	651	649	647	646
	2	Motor power(kW)	11	11	15	15	18.5	18.5	22	22	22	30
	3	Flow(m³/hr)	777	770	765	762	760	756	755	752	750	749
	3	Motor power(kW)	11	15	15	18.5	18.5	22	22	30	30	30
	4	Flow(m³/hr)	888	880	874	871	868	864	863	860	857	856
	4	Motor power(kW)	11	15	18.5	18.5	22	22	30	30	30	30
	5	Flow(m³/hr)	1009	1000	992	990	986	981	981	977	974	972
	5	Motor power(kW)	15	15	18.5	22	30	30	30	30	37	37
	6	Flow(m³/hr)	1121	1111	1103	1100	1096	1090	1090	1085	1082	1080
	6	Motor power(kW)	15	18.5	22	30	30	30	30	37	37	37
	7	Flow(m³/hr)	1294	1282	1273	1269	1264	1258	1258	1252	1249	1247
	7	Motor power(kW)	18.5	22	30	30	30	37	37	37	45	45
	8	Flow(m³/hr)	1470	1456	1446	1442	1436	1429	1428	1423	1418	1416
	8	Motor power(kW)	18.5	22	30	30	37	37	45	45	45	55

NO.	Rotating speed sequence	Working pressure(bar)	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0	1.1	1.2
GF200	1	Flow(m³/hr)	1319	1316	1313	1312	1310	1309	1308	1307	1305	1304
	1	Motor power(kW)	18.5	22	30	30	30	37	37	45	45	45
	2	Flow(m³/hr)	1496	1493	1489	1488	1486	1485	1483	1482	1481	1480
	2	Motor power(kW)	18.5	22	30	30	37	37	45	45	45	55
	3	Flow(m³/hr)	1745	1741	1737	1736	1734	1732	1730	1729	1727	1726
	3	Motor power(kW)	22	30	30	37	37	45	45	55	55	55
	4	Flow(m³/hr)	1983	1978	1974	1973	1970	1968	1966	1965	1963	1961
	4	Motor power(kW)	m	30	37	45	45	55	55	55	75	75
	5	Flow(m³/hr)	2226	2220	2215	2214	2211	2208	2207	2205	2203	2201
	5	Motor power(kW)	30	37	45	45	55	55	55	75	75	75
	6	Flow(m³/hr)	2518	2511	2506	2504	2501	2498	2496	2494	2491	2490
	6	Motor power(kW)	30	37	45	55	55	75	75	75	75	90
	7	Flow(m³/hr)	2815	2807	2801	2800	2796	2793	2790	2788	2785	2783
	7	Motor power(kW)	37	45	55	55	75	75	75	90	90	90
	8	Flow(m³/hr)	3025	3018	3011	3009	3005	3002	2999	2997	2994	2992
	8	Motor power(kW)	37	45	55	75	75	75	75	90	90	90

NO.	Rotating speed sequence	Working pressure(bar)	0.3	0.4	0.5	0.6	0.7	0.8	0.9	1.0	1.1	1.2
GF250	1	Flow(m³/hr)	2691	2687	2687	2682	2680	2677	2676	2674	2672	2670
	1	Motor power(kW)	37	45	55	75	75	75	75	90	90	90
	2	Flow(m³/hr)	3053	3237	3237	3231	3228	3225	3223	3221	3219	3217
	2	Motor power(kW)	45	55	75	75	75	75	90	90	90	110
	3	Flow(m³/hr)	3561	3556	3556	3549	3546	3543	3541	3538	3536	3534
	3	Motor power(kW)	55	75	75	75	90	90	110	110	110	110
	4	Flow(m³/hr)	4046	4040	4040	4033	4029	4026	4024	4021	4019	4015
	4	Motor power(kW)	55	75	75	90	90	110	110	110	132	132
	5	Flow(m³/hr)	4541	4534	4534	4526	4522	4518	4516	4512	4510	4506
	5	Motor power(kW)	75	75	90	90	110	110	132	132	132	160
	6	Flow(m³/hr)	5136	5129	5129	5119	5115	5111	5107	5104	5101	5097
	6	Motor power(kW)	75	90	110	110	110	132	132	160	160	160
	7	Flow(m³/hr)	5742	5734	5734	5723	5718	5714	5710	5706	5703	5698
	7	Motor power(kW)	75	90	110	132	132	132	160	160	160	185
	8	Flow(m³/hr)	6172	6163	6163	6151	6146	6141	6138	6133	6130	6125
	8	Motor power(kW)	90	110	110	132	132	160	160	185	185	185

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