JPS61110067U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a characteristic diagram showing the relationship between electric compressor frequency and refrigeration capacity, and Figure 2 is a characteristic diagram showing the relationship between outside air temperature and heat load when the freezer compartment is -18°C and the refrigerator compartment is 3°C. Figure 3 is an electric block circuit diagram of the device of the present invention, Figure 4 is a flowchart of the same device, and Figure 5 is a characteristic showing the temperature change inside the refrigerator during continuous operation when the outside temperature is below _T0 . It is a line diagram. 1: Outside temperature detector, 3: Operation mode switching circuit, 4: Electric compressor, 5: Temperature deviation detection circuit, 6:
Internal temperature detector, 7: Internal target temperature setting device, 9:
Frequency variable circuit.

Claims (1)

[Scope of utility model registration request] In a refrigerator-freezer equipped with an electric compressor for compressing refrigerant and a frequency control device that controls the inside of the refrigerator to a predetermined temperature by changing the operating frequency of the electric compressor according to the load inside the refrigerator, Based on the input signal from the outside air temperature detector and the outside air temperature detector, the continuous operation mode is set when the outside air temperature is above a predetermined temperature, and the intermittent operation mode is set when the outside air temperature is below a predetermined temperature. A refrigerator-freezer characterized by being equipped with an operation mode switching circuit for switching the operation mode of an electric compressor.