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> Fuji electric VFC704A-7W ring compressor blower
Fuji electric VFC704A-7W ring compressor blower
Fuji Electric VFC704A-7W Ring Compressor
200-230 Volts, 50/60 Hz, 3 Phase, 2 Pole, 5.5/6.7 Horsepower, 15.6-16.0 Amps / 460 Volts, 50/60 Hz, 3 Phase, 2 Pole, 6.7 Horsepower, 8 Amps
The Fuji Ring Compressor is a non-positive displacement, high volume, low pressure blower that can operate as either a compressor or a vacuum pump. It is also known by other names such as: regenerative blower, vortex blower and side-channel blower.
The blower consists of an impeller mounted directly on a motor shaft and is rotated at a high speed, about 3600 RPM. On the periphery of the impeller is a large number of radial blades. The impeller is positioned between two endplates with the blades located with a channel on either side.
As the impeller spins and the blades pass the inlet port, a low pressure area is created that draws in air or other gases. The impeller blades impart motion to the air by centrifugal force, throwing it outward and forward, where it follows the contour of the side-channel and is returned to the base, or root, of the impeller. This action is repeated many times, creating a vortex. Each "regeneration" causes the air to gain pressure until it reaches the portion of the housing where the air is stripped from the impeller and discharged from the blower.
The ring compressor is, in effect, a multistage compressor with each regeneration of the air becoming another "stage". The pressure increase at each stage in the cycle is very small, but the large number of stages yields inlet vacuum levels up to 8 in. Hg and discharge pressures of up to 5 PSIG, depending on the size of the blower. Flow levels of up to 570 SCFM can be achieved, and discharge air is free of annoying pulsating.
The basic construction of a ring compressor means that the only moving part is the impeller. Nothing touches except the bearings. The method of compression means that there is no requirement for lubrication in the compression chamber; the discharge air is oil-less. No oil aerosols are present in the discharge air, nor carbon dust generated by sliding vanes. The blowers may be mounted vertically (with impeller housing down) or horizontally.
* Double Shielded Shaft Bearing
* Motor Shaft-Mounted Impeller
* Improved Cooling Fan Design
* Built-in Thermal Protector
* Removable Threaded Flanges
