Compression refrigerating machine with vapor-liquid separator

A compressor refrigerating machine with a vapor-liquid separator which has an evaporator having a shell and heat exchanger tubes, a condenser having a shell and heat exchanger tubes, a pressure reducing means, a compressor having a suction passage and a discharge passage and being installed on the shells of said evaporator and said condenser, and a motor for driving said compressor, said compressor refrigerating machine comprising:

• a vapor-liquid separator connected to the upper portion of said shell of said evaporator, having a first opening on the bottom wall surface thereof, and at least second and third openings on at least one side wall surface thereof;
• said first opening connecting the interior of said vapor-liquid separator and the interior of the evaporator shell;
• said second opening connecting the interior of said vapor-liquid separator and said suction passage of said compressor;
• said vapor-liquid separator being provided therewithin with a discharge duct for connecting said third opening to the interior of the condenser shell;
• said third opening and said discharge duct connecting said discharge passage of said compressor and the interior of said condenser shell;
• said vapor-liquid separator being provided therewithin with an element member for separating vapor from liquid;
• and
• said element member being disposed across the flow of the refrigerant vapor which flows from said first opening toward said second opening in said vapor-liquid separator.

A compressor refrigerating machine with a vapor-liquid separator comprising:

• an evaporator having a shell and heat exchanger tubes;
• a condenser having a shell and heat exchanger tubes;
• a pressure reducing means;
• a compressor having a casing with a flange portion, a suction passage and a discharge passage;
• a motor having a housing, a stator and a rotor;
• a set-up gear mechanism having a gear casing, a gear, a pinion and a refrigerant vapor collecting passage;
• and
• a cooling system having a refrigerant liquid introduction tube, a refrigerant liquid introduction passage, a refrigerant discharge passage, and a refrigerant discharge tube;
• said compressor being installed on the shells of said evaporator and said condenser;
• said evaporator being provided with a vapor-liquid separator connected to the upper portion thereof;
• said vapor-liquid separator having a first opening on the bottom wall surface thereof, and second, third, fourth, fifth and sixth openings on one side wall surface thereof;
• said first opening connecting the interior of said vapor-liquid separator and the interior of the evaporator shell;
• said second opening connecting the interior of said vapor-liquid separator and said suction passage of said compressor;
• said vapor-liquid separator being provided therewithin with a discharge duct for connecting said third opening to said interior of the condenser shell;
• said third opening and said discharge duct connecting said discharge passage of said compressor and the interior of said condenser shell;
• said vapor-liquid separator being provided therewithin with an element member for separating vapor from liquid;
• said element member being disposed across the flow of the refrigerant vapor which flows from said first opening toward said second opening in said vapor-liquid separator;
• one end of said refrigerant vapor collecting passage being connected to the interior of said gear casing and the other end thereof to said sixth opening;
• one end of said refrigerant liquid introduction tube being connected to the bottom portion of said shell of said condenser, and the other end thereof to said fourth opening;
• said refrigerant liquid introduction passage being extended from said flange portion of said compressor to the interior of said housing of said motor;
• said refrigerant discharge passage being extended from said interior of said housing to said flange portion of said compressor;
• one end of said refrigerant discharge passage being connected to said fifth opening, and the other end thereof to the interior of said evaporator;
• and
• said flange portion of said compressor being connected to side wall of said vapor-liquid separator, thereby communicating said second opening with said suction passage of said compressor, said third opening with said discharge passage of said compressor, said fourth opening with said refrigerant liquid introduction passage, said fifth opening with said refrigerant discharge passage, and said sixth opening with said refrigerant vapor collecting passage, respectively.