Patent ID: 6076363
Filing Date: 2000-06-20
Classification: B60P,F25D

Abstract:
An automatic switch controlled ventilation system for a recreational vehicle refrigerator, which refrigerator has a condenser and a heating element and which refrigerator is mounted, spaced from an outside wall of the vehicle, the operation of which refrigerator causes the heater element to build up heat in the space behind the refrigerator, thereby affecting the efficiency of the condenser, said ventilation system comprising:a fan disposed in the space between the refrigerator and the outside wall of the vehicle,a pair of thermo switches, designated S1 and S2, switch S2 having a different and higher degree zonal range of operation than that of switch S1, the ""on"" temperature being at the top of the range and the ""off"" temperature being at the bottom of the range for each switch, said switches being electrically connected in series with each other and with said fan, and connected to a power source,said switch S2 being physically disposed adjacent the heating element of said refrigerator, and switch S1 also being disposed in the air space behind the refrigerator,whereby when the temperature of the heating element reaches the ""on"" temperature of switch S2, switch S2 turns on, and when and if, the temperature in the air space behind the refrigerator reaches the ""on"" temperature of S1, the switch S1 is activated and the fan turns on to dissipate the heat;and wherein when said temperature in the air space behind the refrigerator decreases as the heat is dissipated, down to the ""off"" temperature of switch S1, the fan turns off.