Danfoss DSH Series Application Guide

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Intermediate discharge valves (IDVs) increase
seasonal eciency
Heat shield lowers the heat transfer between
discharge and suction gas and the sound level
Internal Non Return Valve (INRV) prevents
excessive leak rate from high pressure side
Integrated discharge gas temperature protection
(DGT)
Lead free polymer bearings improve behavior
under poor lubrication conditions
Patented gas path ow with gas intake design
induce higher resistance to liquid slugging
Organ pipe masters oil circulation in manifold
conguration
Cut Away DSH240-600
Figure 2: Cut Away DSH240-600
How do IDVs work?
Figure 3: Intermediate Discharge Valve (IDV)
Danfoss Intermediate Discharge Valves (IDVs) are located close to the discharge side of the compressor. They reduce
excessive compression of refrigerant under part-load conditions while maintaining the same cooling capacity. The
IDVs open when discharge pressure falls below the built-in optimization point. They adapt the eort of the motor to
the varying load and pressure conditions in the system, thus reducing the eort of the motor and its electrical
consumption and improving the system’s seasonal energy eciency.
© Danfoss | Climate Solutions | 2022.10 AB288965961751en-001402 | 7
Scroll compressors, DSH090 to DSH600 | Introduction

Danfoss DSH Series Specifications

General

Brand	Danfoss
Model	DSH Series
Category	Air Compressor
Language	English