Refrigeration System Including Evaporators Associated in Parallel

Abstract

The present invention belongs to the technological field of refrigeration systems and, more particularly refrigeration systems used in residential applications, for example, refrigeration appliances including at least two climate chambers at different temperatures. Problem to be solved: Conventionally, existing Refrigeration systems including evaporators connected in parallel require complex compressors including at least two suction paths, or alternatively functional complex arrangements unable to maintain independence between the individual evaporators. Troubleshooting: Disclosed is a refrigeration system including evaporators connected in parallel where each of said evaporators operates through a separate feeding principle, and that this aspect makes it possible, with the aid of a liquid accumulator and phase separator, maintaining the independence between the individual evaporators, besides the use of a compressor.

1 . Refrigeration system including at least two evaporators associated in parallel, where:
 said evaporators connected in parallel operate in different pressure and temperature ranges;   said refrigeration system comprising at least two evaporators connected in parallel further comprising:   at least one compressor, at least a condenser, at least a switching device at least a first expansion device, at least a second expansion device, and at least one fluid accumulator;   the outflow of the compressor being fluidly connected to the inlet path from the condenser; the condenser outflow being fluidly connected to the switching device inlet path; the switching device outflow being fluidly connected to the first expansion device;   the switching device outflow is fluidly connected to the second expansion device;   said liquid accumulator comprising at least one lower inlet path immersed in the liquid, at least one upper inlet path, and at least one upper outflow;   said refrigeration system comprising at least two evaporators connected in parallel being particularly characterized in that further comprises:   at least one dry expansion evaporator acting as high pressure evaporator and low temperature and being fed by the first expansion device;   at least a flooded evaporator acting as a low pressure evaporator and very low temperature and being fed by the second expansion device and the outflow of said dry expansion evaporator being fluidly connected to the upper inlet path of the liquid accumulator;   the outflow of said flooded evaporator being fluidly connected to a lower inlet path of the liquid accumulator; and   the upper outflow of the liquid accumulator being fluidly connected to the compressor suction path.   
     
     
         2 . Refrigeration system including at least two evaporators associated in parallel, as claimed in  claim 1 , characterized in that the fluid accumulator is at a higher potential gravitational in relation to the flooded evaporator, so as to define a siphon effect between said liquid accumulator and said flooded evaporator. 
     
     
         3 . Refrigeration system including at least two evaporators associated in parallel, as claimed in  claim 1 , characterized by the fact that the moving parts of the compression mechanism of compressor operate without lubrication by liquid means. 
     
     
         4 . Refrigeration system including at least two evaporators associated in parallel, as claimed in  claim 1 , characterized by the fact that the moving parts of the compressor compression mechanism cooperate with oil and at least one oil separator. 
     
     
         5 . Refrigeration system including at least two evaporators connected in parallel, as claimed in  claim 1 , characterized by the fact that said fluid accumulator comprises at least one additional evaporator of a special compartment of the refrigeration system.