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Air Bearing Turbo Blower

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The Air Bearing Turbo Blower is a type of blower that generates a dynamic pressure effect between the rotor and the foil bearing surface due to the high-speed rotation of the rotor, forming a high-pressure air film that lifts the rotor.

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The Air Bearing Turbo Blower is a type of blower where, under the high-speed rotation of the blower rotor, a dynamic pressure effect is generated between the rotor and the surface of the foil bearings, creating a high-pressure air film that lifts and suspends the rotor.

Selection and Parameters

Total Power (kW)		15	20	30	40	50	60	75	90	110	130	150	175	200	250	300
Shaft Power (kW)		12	17	26	35	44	53	68	82	100	118	136	159	183	225	273
Model/Parameter		KFA20	KFA30	KFA40	KFA50	KFA70	KFA80	KFA100	KFA125	KFA150	KFA75	KFA200	KFA235	KFA270	KFA335	KFA400
Model/Parameter		Flow Rate (m³/min)
Pressure (kPa)	40	14	21	33	45	55	66	80	96	119	141	162	198	215	270	324
	50	11	16	26	36	45	54	69	83	108	129	140	172	192	245	302
	60	9	13	22	31	40	49	64	77	92	109	126	147	167	210	255
	70		11	19	28	36	43	55	67	81	95	112	130	149	189	226
	80			17	25	31	38	50	61	72	87	104	120	130	168	205
	90			16	23	28	34	44	54	64	80	94	107	120	151	186
	100					25	31	40	50極	59	74	86	100	112	141	179
	110						29	37	45	55	68	79	91	101	134	161
	120							34	42	51	63	74	83	94	125	149
Structure Type		Single Impeller											Dual Impeller
Dimensions (mm)		1420L700W1500H				1535L900W1680H				1705L1040W1980H			2100L1500W2000H
Cooling Port Diameter		DN65				DN100				DN125			DN150
Outlet Pipe Diameter		DN100	DN150			DN200			DN250		DN300		DN350		DN400
Weight (kg)		220	330	350	380	650	690	750	800	850	950	1000	1300	1400	1700	1780

Note: KFA100 (KF - Kaifeng, A - Air Suspension, 100 - Horsepower)

Performance Comparison: Air Bearing Turbo Blower vs. Traditional Blower

Fan Type	Roots Blower	Single-Stage High-Speed Centrifugal Blower	Multi-Stage Centrifugal Blower	Air Bearing Turbo Blower
Bearing Type	Ball Bearing	Ball Bearing	Ball Bearing	Air Bearing
Bearing Lubrication	Required	Required	Required	Not Required
Bearing Life	1-2 Years	3-5 Years	2-3 Years	200,000 Start-Stop Cycles
Bearing Loss	2-5%	2.5%	2-5%	1%
Motor Type	Low-Speed Asynchronous Motor	Asynchronous AC Motor	Low-Speed Asynchronous Motor	High-Speed Permanent Magnet Synchronous Motor
Motor Efficiency	85-90%	85-90%	85-90%	Above 95%
Motor Transmission Type	Belt or Coupling	Coupling	Coupling	Direct Drive
Motor Speed Control	Not Adjustable	Adjustable	Not Adjustable	Precise Control
Impeller Type	Cast Two or Three-Lobe Impeller	Aluminum Alloy Ternary Flow Impeller	Welded/Cast Carbon Steel or Aluminum Impeller	Aluminum Alloy Ternary Flow Impeller
Impeller Life	5-8 Years	15 Years	10 Years	20 Years
Impeller Efficiency	Low	Relatively High	Relatively High	High
Control Method	Outlet Throttle Frequency Conversion	Inlet Throttle Frequency Conversion	Inlet Throttle Frequency Conversion	Frequency Conversion
Wear Parts	Bearings, Gears	Bearings, Gears, Lubrication Pump	Bearings, Seals	Filter Cotton
Lubrication	Periodic Addition	Periodic Addition	Periodic Addition	No Lubrication Required
Cost	Medium	High (Imported)	Medium	Low
Overall Efficiency	Around 65%	Around 65%	Around 65%	Above 80%
Procurement Cost	Low	High (Imported)	Relatively High	Relatively High

Air Suspension Motor Assembly

The ternary flow centrifugal impeller technology originates from aerospace engine technology. It abandons the traditional guide vane adjustment method and adopts a frequency conversion drive adjustment method, allowing for adjustable speed ranges and expanding the operational range of the blower.

Air suspension bearings are commonly used in the aerospace field and are often considered core components of certain systems. Without the use of any lubricants, they offer zero maintenance, zero pollution, long-term stable operation, and can function normally within a wide temperature range of -180°C to 600°C.

Permanent magnet synchronous ultra-high-speed motors are a new type of motor that has emerged with advancements in permanent magnet material technology, semiconductor technology, and control technology. They can achieve speeds of up to 400,000 revolutions per minute or more, with motor efficiency exceeding 95%. These motors are characterized by high speed, low vibration, low noise, compact size, simple structure, and minimal electromagnetic radiation, making them one of the most energy-efficient and high-performance motors currently available.

Focusing on high frequency, with a carrier wave of up to 16kHz and an output frequency of up to 800Hz, they can easily drive high-speed motors. Excellent loss suppression and thermal management ensure high-frequency output without derating, making them suitable for various harsh operating environments. High-performance sensorless vector control technology offers good parameter adaptability, high control performance, low output harmonics, and reduced motor heating. Intelligent self-learning allows for one-click identification of motor and control parameters, significantly reducing debugging difficulty and workload.

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