LT-S-L Technical manual
3
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Refrigerant oil cooling
★
Note
：
Oil cooler takes liquid from the liquid pipe and returns back to compressor
medium pressure gas inlet
Figure 5-10. Refrigerant oil cooling
5.3
Motor Liquid Injection Cooling
The motor cooling of the compressor is mainly based on the cooling of gaseous
refrigerant. The refrigerant gas discharged from the low-pressure stage flows through
the motor together with the economizer gas to achieve cooling of the motor.
However, in strict working condition, the cooling effect of gas refrigerant is not
sufficient. So Hanbell designed a connector to assist the cooling of the motor, from
which the liquid refrigerant can be injected to the medium pressure chamber. Once the
liquid refrigerant enters the medium pressure chamber, it will diffuse with the air flow
to realize the cooling of the motor. Meanwhile, it guarantees the minimum energy loss
and expand the working condition of the compressor.
