JPS61145258U - - Google Patents

Description

[Brief explanation of drawings]

1 to 3 are drawings showing an embodiment of the present invention, in which FIG. 1 is a flowchart showing operation control, FIG. 2 is a refrigerant circuit diagram, and FIG. 3 is an electric circuit diagram.
Figure 4 is a refrigerant circuit diagram of another embodiment of the present invention;
The figure is a refrigerant circuit diagram showing a conventional example. 2... Condenser, 3... Evaporator, 4... Liquid pipe, 5
...Expansion valve for supercooling degree control (first expansion valve), 6
...Liquid receiver, 7...Expansion valve for superheat control (second
expansion valve), 9...pressure detector.

Claims (1)

[Scope of utility model registration request] A liquid pipe connecting the condenser 2 and the evaporator 3 includes an expansion valve 5 whose opening degree can be adjusted to control the degree of supercooling of the high-pressure liquid refrigerant, a liquid receiver 6, and a liquid pipe for controlling the degree of superheating of the low-pressure gas refrigerant. In a refrigerator in which an expansion mechanism 7 is installed in series, an overload operation detection means detects and outputs an overload operation, and the expansion valve 5 receives the output of the detection means and controls the degree of supercooling. A refrigerating machine equipped with an expansion valve for controlling the degree of supercooling, characterized in that a control means for controlling the expansion valve to a large opening degree is provided.