2200M4JE-HO-iS2-N_2014.04.
Screw Compressor i-series
Appendix -3
Oil Temperature Control
Generally, in order to keep the lubricant
temperature in the oil separator, install
the oil heater at the bottom of the oil
separator.
In the cold district, the viscosity of
lubricant at the compressor start-up is
decreased; lubricant is hard to flow, so
there are cases that package unit
cannot secure the necessary oil supply
pressure.
When you need to secure the oil supply
temperature to the compressor, install
an oil temperature control valve.
Figure app.-5 is a reference flow in oil
temperature control valve use.
The mixing -type three-way valve is
general.
Figure app.-5
Economizer
i-series compressor has a economizer port for improvement of refrigerating effect.
Figure app.-6 is a use example of the general economizer system with the i-series compressor
package unit.
DX type composed by a expansion valve and a heat exchanger, and flash tank type inhaling from
common flash tank are general.
Install a filter with the ability for filtration less than 100
μ
m in the economizer line
。
In the case of DX type economizer, type of the heat exchanger can choose with shell and tube type,
plate type, etc. Use it properly by the system of refrigerator.
I
In addition, the economizer port can also be used as a side load gas inlet port, but since the
diameter is small compared to general port for side load port, please contact us for the details.
DX type
Flash tank type
Figure app.-6
