Patent ID: 9541313
Date: 2017-01-10
CPC Classifications: F25B

Claim:
1. A refrigerating device that forms a refrigerating cycle in which a plurality of outdoor machines, each provided at least with a compressor, a condenser and an accumulator, and an indoor machine provided with a decompressor and an evaporator, are connected in parallel by piping, comprising: an oil return pipe that returns refrigerator oil stored in said accumulator to said compressor; an oil equalizing pipe that connects the accumulators to each other; a controller that controls an operation of said compressor and on/off of an electromagnetic valve disposed on said oil equalizing pipe; and an oil regulator that adjusts an oil amount to be supplied to said compressor and is provided between said accumulator and said compressor, wherein said oil return pipe directly connects said accumulator and said oil regulator, said accumulator is disposed at a downstream side of said evaporator in a refrigerant flow of said refrigerating cycle and at an upstream side of said compressor in the refrigerant flow of said refrigerating cycle, said oil return pipe is provided independent from a refrigerant pipeline of said refrigeration cycle so that the oil return pipe does not include refrigerant gas, said controller opens said electromagnetic valve to make amounts of refrigerator oil stored in each of said accumulators equal, and a lowermost portion of the accumulator is disposed at a height not lower than the oil return pipe connected to the accumulator.