Evaporator unit

Abstract

An evaporator unit includes an ejector, an evaporator and a refrigerant pipe to connect a refrigerant outlet of the evaporator and a suction port of the ejector. The suction port draws refrigerant using high-speed refrigerant flow injected from a nozzle of the ejector. The ejector, the evaporator and the refrigerant pipe are integrated with each other into an integrated unit. The refrigerant outlet of the evaporator is located upper than the suction port of the ejector. The refrigerant pipe has a shape in a manner that refrigerant flows downward from the refrigerant outlet of the evaporator to the suction port of the ejector.

1 . An evaporator unit comprising:
 an ejector including a nozzle to decompress refrigerant and a suction port to draw refrigerant using high-speed refrigerant flow injected from the nozzle;   a suction side evaporator to evaporate refrigerant and to discharge refrigerant toward the suction port of the ejector; and   a suction side refrigerant pipe to connect a refrigerant outlet of the evaporator and the suction port of the ejector, wherein   the ejector, the evaporator and the refrigerant pipe are integrated with each other into a unit,   the refrigerant outlet of the evaporator is located upper than the suction port of the ejector in a circumference direction of the refrigerant pipe, and   the refrigerant pipe has a shape in a manner that refrigerant flows downward from the refrigerant outlet of the evaporator to the suction port of the ejector.   
     
     
         2 . The evaporator unit according to  claim 1 , further comprising:
 a discharge side evaporator to evaporate refrigerant flowing from a refrigerant outlet of the ejector, wherein   the ejector, the suction side evaporator, the discharge side evaporator and the refrigerant pipe are integrated with each other into a unit.   
     
     
         3 . The evaporator unit according to  claim 1 , wherein
 the suction port of the ejector is made of an opening open upward from a horizontal direction.   
     
     
         4 . The evaporator unit according to  claim 1 , further comprising:
 a discharge side refrigerant pipe connected to a refrigerant outlet of the ejector, wherein   the discharge side refrigerant pipe is configured to increase a pressure of refrigerant mixture containing refrigerant injected from the nozzle and refrigerant drawn from the suction port.   
     
     
         5 . The evaporator unit according to  claim 1 , wherein
 the evaporator has a tank and a plurality of tubes connected to the tank, refrigerant passing through the tubes, and   the refrigerant outlet of the evaporator is defined in the tank.   
     
     
         6 . An evaporator unit comprising:
 an ejector including a nozzle to decompress refrigerant and a suction port to draw refrigerant using high-speed refrigerant flow injected from the nozzle;   an evaporator to evaporate refrigerant and to discharge refrigerant toward the suction port; and   a refrigerant pipe to connect a refrigerant outlet of the evaporator and the suction port of the ejector, wherein   the ejector, the evaporator and the refrigerant pipe are integrated with each other into a unit, and   the refrigerant outlet of the evaporator is located upper than the suction port of the ejector in a circumference direction of the refrigerant pipe.