Multi-evaporation cooling system

Patent metadata

Field	Value
Publication number	US-10539341-B2
Application number	US-201615265108-A
Country	US
Kind code	B2
Filing date	Sep 14, 2016
Priority date	Sep 15, 2015
Publication date	Jan 21, 2020
Grant date	Jan 21, 2020

Abstract

A multiple-evaporation cooling system in which the intermediate heat exchanger of first evaporation line includes at least a segment of the physically arranged expansion device in contact with at least a portion of the second row of evaporation and the intermediate heat exchanger's second evaporative line includes at least one expansion device segment physically disposed in contact with at least one portion of a first evaporation line. Considering the temperature of the intermediate heat exchanger of first evaporation line influences the temperature of the refrigerant flowing in the second line of evaporative expansion device and the temperature of the intermediate heat exchanger of the second evaporative line influences the temperature of the refrigerant flowing in the first line of evaporative expansion device. Features include varying the restriction of the respective expansion devices and then unduly inhibit mass transfer of refrigerant between at least two distinct evaporation.

First claim

The invention claimed is:

1. A multi-evaporation cooling system, comprising:
a reciprocating compressor ( 1 ) provided with two suction paths coupled to two distinct evaporation lines (Levap 1 , Levap 2 ); wherein
the first evaporation line (Levap 1 ) comprises a first expansion device ( 41 ), a first evaporator ( 51 ) and a first intermediate heat exchanger ( 61 );
the second evaporation line (Levap 2 ) comprises a second expansion device ( 42 ), a second evaporator ( 52 ) and a second intermediate heat exchanger ( 62 );
said multi-evaporative cooling system being characterized by the fact that:
the first intermediate heat exchanger ( 61 ) of the first evaporation line (Levap 1 ) comprises a first segment of the first expansion device ( 41 ) physically disposed in contact with a portion of the second evaporation line (Levap 2 ), downstream of said second evaporator and upstream of a suction inlet of the reciprocating compressor ( 1 );
the second intermediate heat exchanger ( 62 ) of the second evaporation line (Levap 2 ) comprises a first segment of the second expansion device ( 42 ) physically disposed in contact with a portion of the first evaporation line (Levap 1 ) downstream of said first evaporator ( 51 ) and upstream of the suction inlet of the reciprocating compressor ( 1 ); and in that
said first segment of the first expansion device ( 41 ) in the first intermediate heat exchanger ( 61 ) comprises a same capillary tube as a second segment of the first expansion device ( 41 ) arranged downstream of said first segment of the first expansion device ( 41 ) and upstream of said first evaporator ( 51 );
said first segment of the second expansion device ( 42 ) in the second intermediate heat exchanger ( 62 ) comprises a same capillary tube as a second segment of the second expansion device ( 42 ) arranged downstream of said first segment of the second expansion device ( 42 ) and upstream of said second evaporator ( 52 );
wherein the first segment of the first expansion device of the first evaporation line is individually and fluidically isolated from the first segment of the second expansion device of the second evaporation line.

2. The multi-evaporation cooling system, according to claim 1 , characterized by the fact that said reciprocating compressor ( 1 ) comprises a reciprocating compressor having at least two suction ways ( 11 , 12 ).

3. The multi-evaporation cooling system, according to claim 1 , characterized by the fact that said reciprocating compressor ( 1 ) comprises at least two reciprocating compressors associated in parallel in a way to define at least two suction ways ( 11 , 12 ).

Assignees

• Whirlpool Sa
• Embraco—Industria De Compressores E Solucoes Em Refrigeracao Ltda

Inventors

• Lilie Dietmar Erich Bernhard
• Montagner Gustavo Portella

Classifications

• F25B2400/052

  between the capillary tube and another part of the refrigeration cycle · CPC title

• F25B2400/075

  with parallel compressors · CPC title

• F25B2313/02531

  during cooling · CPC title

• F25B2313/02331

  during cooling · CPC title

• F25B2400/054

  between the suction tube of the compressor and another part of the cycle · CPC title