To provide a vending machine cooling or heating, and selling a commodity, such as a canned drink, using the heat of external air for the heating, reducing power necessary for switching or maintenance of cooling and heating, and reducing power consumption.
The vending machine has a dedicated cooling/heating system 26 for cooling/heating a hot/cold switch chamber 1, in addition to a cooling means for a cold chamber 2 and a second cold chamber 3, and has a compressor 20, an indoor heat exchanger 4, an outdoor heat exchanger 21 configured by a cascade heat exchanger integrated with a condenser of a cooling system 27, and a four-way selector valve 22, as the cooling/heating system 26, thereby, high-temperature condition of evaporation temperature of 0-10 C can be maintained, compression ratio is reduced, even under a severe heating condition of a condensation temperature of 60-80 C, the efficiency of the compressor can be easily improved, and the efficiency in cooling can be also improved.
SAKAI TOSHIKAZU
NISHIMURA KOICHI
HIRAI TSUYOKI
KAMEI MASAHARU
Hiroki Naito
Daisuke Nagano