JPS6395063U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing a first embodiment of the steam injection refrigerator of the present invention, Fig. 2 is a circuit diagram showing a second embodiment of the same, and Fig. 3 is a circuit diagram showing a Freon R used as an example of two types of refrigerant. Fig. 4 is a diagram showing the relationship between the saturation pressure and saturation temperature of Freon R113 and Freon R114, and Fig. 4 is a circuit diagram showing a previously devised steam injection refrigerator, and Fig. 5 is a conventional steam injection refrigerator. 1: Refrigerant, 2: Heater, 3: Heat exchange tube,
4: Condenser, 5: Steam outlet, 6: First connecting pipe, 7: Inlet, 8: Ejector, 9: Evaporator, 10: Second connecting pipe, 11: Third connecting pipe, 12: Liquid refrigerant Inlet, 13: Branch pipe, 14: Liquid receiver, 15: Expansion valve, 16: Liquid pump, 17:
Nozzle, 18: Chamber, 19: Mix chamber, 20: Fan, 21: Distiller, 22: Sub-condenser, 23, 24: Liquid pump, 25: Return pipe, 26: Control valve, 27: Bubble sensor, 28: Control vessel.

Claims (1)

[Scope of utility model registration request] A heater that heats and evaporates refrigerant into high-pressure vapor, and a condenser that condenses and liquefies the refrigerant vapor.
A first connecting pipe with one end connected to the steam outlet of the heater and the other end connected to the steam inlet of the condenser, and a condenser installed in the middle of the first connecting pipe to connect the steam sent from the heater to the condenser. an ejector that ejects fluid toward the inlet and sucks fluid from the suction port, and a second connecting pipe that has one end connected to the outlet of the liquid refrigerant of the condenser and the other end connected to the inlet side of the evaporator that evaporates the liquid refrigerant. , a third connecting pipe having one end connected to the outlet side of the evaporator and the other end connected to the suction port of the ejector, and a third connecting pipe branching from the middle of the second connecting pipe to the liquid refrigerant inlet of the heater. Provided in the middle of the connecting branch pipe and the second connecting pipe between the condenser and the branch part of the branch pipe,
In a steam injection refrigerator consisting of a liquid refrigerant pump that sends the liquid refrigerant sent out from the liquid refrigerant outlet of the condenser to the rear, a mixture of two or more types of refrigerants with different saturation temperatures is used as the refrigerant, and the above-mentioned A distiller that heats the refrigerant and separates two or more types of refrigerants is provided at the branch between the second connecting pipe and the branch pipe, and a distiller is provided between the distiller and the evaporator in the middle of the second connecting pipe. A sub-capacitor is provided in the
The refrigerant with a high saturation temperature can be sent in liquid form to the branch pipe, and the vapor of the refrigerant with a low saturation temperature can be sent out to the second connecting pipe, and one end is placed in the middle of the pipe that sends the liquid refrigerant behind the liquid sending pump. Connect the other end of the return pipe with a control valve that can freely adjust the opening in the middle,
The presence of air bubbles is determined based on a signal from a bubble detection sensor that is connected to the portion of the first connecting pipe between the ejector and the condenser and detects the presence of air bubbles in the refrigerant flowing between the liquid feed pump and the distiller. A steam injection refrigerator characterized by being equipped with a controller that opens a control valve when bubbles are present and closes the control valve when no bubbles are present.