Temperature controlled compressor for electrical energy savings in enclosed room cooling

Abstract

An electrical energy use saving system for the sales of purchasable amounts of beer, soda, bottled water, meat, vegetables, fruit, dairy, eggs or seafood products kept in a walk-in cooler, reach-in cooler or display case whose temperature is to be maintained includes a compressor, a thermostat, a suction fan and a thermometer in a network by which the cooler or case is cooled by outdoors ambient air when outside temperatures are cold and where the cooler or case is cooled by the compressor when outside temperatures are warm.

1 . An electrical energy use savings system for product cooling comprising:
 a walk-in cooler, a reach-in cooler or a display case housing purchasable amounts of beer, soda, bottled water, fruit or vegetable produce for off-site consumption;   an electrically operated compressor coupled to maintain the temperature in the cooler or case within a predetermined range;   thermometer means for measuring ambient air temperature outdoors in an environment outside the cooler or case;   a suction fan ducted at an input end to the outside outdoors environment and at an output end to the inside of the cooler or case;   and thermostat means coupled with said thermometer means for activating the compressor when both the temperature within the cooler or case and the ambient air outdoor temperature rise above the controlled range to be maintained and for activating the suction fan when both the temperature within the cooler or case rises above the controlled range to be maintained and the ambient air outdoor temperature falls below the controlled range to be maintained;   whereby the cooler or case is cooled by outdoors air when outdoor temperatures are cold and whereby the cooler or case is cooled by the compressor when outdoor temperatures are warm.   
   
   
       2 . The electrical energy use saving system of  claim 1 , also including means for filtering the outdoors ambient air ducted into the cooler or case when the suction fan is activated. 
   
   
       3 . The electrical energy use saving system of  claim 1 , also including means for dehumidifying the outdoors ambient air ducted into the cooler or case when the suction fan is activated. 
   
   
       4 . The electrical energy use saving system of  claim 1 , also including means for filtering and dehumidifying the outdoors ambient air ducted into the cooler or case when the suction fan is activated. 
   
   
       5 . The electrical energy use savings system of  claim 1  wherein said compressor, thermometer means, suction fan and thermostat means maintain the temperature within a walk-in cooler at substantially 40° F. 
   
   
       6 . The electrical energy use savings system of  claim 1  wherein said compressor, thermometer means, suction fan and thermostat means maintain the temperature within a reach-in cooler and display case at substantially 55° F. 
   
   
       7 . The electrical energy use saving system of  claim 1  wherein the electrically operated compressor is mounted on the rooftop of a food store in which the walk-in cooler, reach-in cooler or display case is located. 
   
   
       8 . The electrical energy use saving system of  claim 7  wherein the suction fan is also mounted on the rooftop of the food store.