2205Q2JE-HO-S6-N_2020.01.
Chapter 2 Compressor Specifications and Structure
SCV-series Screw Compressors 2.1 Features of SCV-series Screw Compressors
2-1
Chapter 2 Compressor Specifications and Structure
2.1 Features of SCV-series Screw Compressors
SCV-series Screw is a single-stage screw compressor classified into a rotary
displacement pump type, and it consists of the following features.
High Efficiency
The SCV-series has achieved high efficiency by applying " original O-profile screw
robes with the minimum leakage".
In addition, the SCV series provides economical operations due to its variable capacity control
mechanism, which well follows the load variation.
Responding to a Wide Range Condition
In the SCV-series compressors, there are four types of rotor lobe diameter, and each rotor has
three types of shaft length (for types shaft length in the 250 mm diameter rotor) as a standard
specification.
Also, there are two types of the discharge direction of the compressed gas, i.e. one is sideway
discharge type, another one is downward discharge type. For details, refer to next Section 2.2.
With these features, the SCV-series compressor is providing a high versatility that can satisfy a
wide range of operation conditions required by different applications at the load side.
Moreover, the SCV-series models feature a “Readily changing mechanism to three ranges of
internal volume ratio Vi”. Using this variable Vi mechanism, customers can be corresponding to
large change of the load side operating conditions as a case of refrigerant changing or like.
High Reliability
The SCV-series has extended the long span continuous operation without compressor overhauling
because of the following features:
Radial sleeve bearings specially designed with
’s original technology, special
high-load capacity thrust ball bearings, and a bellows type mechanical seal assembly.
Furthermore, from December 2014 Moriya factory production, the SCV-series models have
employed the new type unloader indicator assembly with the protection grade IP66 of the dust and
water proof, at the same timing, have installed a durable conductive plastic potentiometer as the
standard inner component of the indicator.
Because of this improvement, the SCV-series has equipped with further high reliability.
Less Vibration/Noises
The O-profile rotors along with other various design considerations have reduced noise and
vibrations further.
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