JPS621079U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 4 show examples of the present invention, where Figure 1 is a temperature control circuit diagram, Figure 2 is a characteristic diagram of the ambient temperature detection thermistor, and Figure 3 is the combined resistance characteristic of both ambient temperature detection thermistors. Fig. 4 is a vertical side view of the refrigerator, and Fig. 5 is a diagram of temperature change inside the refrigerator before improvement. 5... Cooler, 6... Air blower, 10... Electric compressor, 11... Temperature sensing element for cold air temperature detection, 12...
...Cold air supply path, 15...Cold air temperature detection section, 17...
...Ambient temperature detection section, 18...Negative characteristic thermistor,
19...Positive characteristic thermistor.

Claims (1)

[Scope of utility model registration request] In a refrigerator in which air cooled by a cooler of a refrigeration system is circulated by a blower and the operation of the refrigeration system is controlled according to the temperature of the cool air supplied to the refrigerator, the temperature of the supplied cold air is detected and a resistance value is determined. a cold air temperature detection section including a temperature sensing element whose resistance value changes, an ambient temperature detection section including a parallel circuit of a positive characteristic thermistor and a negative characteristic thermistor whose resistance values change depending on the ambient temperature of the refrigerator, and both of the above-mentioned detection sections. A temperature control device for a refrigerator, comprising: a comparator that compares outputs based on the operations of the refrigeration system and generates an output for controlling the operation of the refrigeration system.