Refrigeration evaporator fan motor controller for freezers

Abstract

A system for use with freezer/refrigeration devices comprising: a fan speed controller, at least one remote air sensors, and a voltage control device.

1 . A system for use with freezers and/or other refrigeration type systems comprising: 
 a voltage controller, at least one remote air sensor(s), and a temperature sensing relay.    
   
   
       2 . The system of  claim 1  wherein the remote air sensor is in communication with the temperature sensing relay.  
   
   
       3 . The system of  claim 2  wherein the temperature sensing relay is in communication with the voltage controller.  
   
   
       4 . The system of  claim 3  wherein the voltage controller is a triac or similar type of device.  
   
   
       5 . The system of  claim 4  wherein the triac type device is integrated with the temperature sensing relay.  
   
   
       6 . The system of  claim 3  wherein the voltage controller is a quadrac or similar type device.  
   
   
       7 . The system of  claim 6  wherein the quadrac type device or other similar devices is integrated with the temperature sensing relay.  
   
   
       8 . The system of claim one wherein the voltage controller and the temperature sensing relay is in communication with a fan motor.  
   
   
       9 . The system of claim one wherein at least one remote air sensor is placed in the discharged air stream.  
   
   
       10 . For use with a freezer system having a cooled chamber, a compressor, an evaporator fan motor, at least one remote air sensor placed in the discharged air stream, a temperature sensing relay, and a voltage controller comprising: 
 an evaporator fan motor in communication with a voltage controller, said voltage controller in communication with the remote air sensor(s), the remote air sensor(s) sensing air temperature from a front and a back of an evaporator coil, whereby if the remote air sensor(s) through the temperature sensing relay detects a temperature differential the evaporator fan motor will maintain a high speed indicating that the system is cooling, whereas if the remote air sensor(s) does not detect a temperature differential the evaporator fan motor will shift into a lower speed indicating that the compressor is not running thereby decreasing evaporator fan produced heat, resulting in an overall decreased energy requirement for the heat exchange system by keeping the fan heat out of the refrigerated chamber and by keeping the compressor off resulting in substantial energy savings.    
   
   
       11 . A method for use with the system of  claim 1  comprising: 
 (a) detecting whether there is a temperature differential on an evaporator coil using at least one remote air sensor or plurality of remote air sensors;    (b) setting the speed of evaporator fan motor(s) to high speed when there is a temperature differential across the evaporator coil, whereby it is indicated that the compressor is running;    (c) setting the speed of evaporator fan motor(s) to low speed when there is no temperature differential across the evaporator coil, whereby it is indicated that the compressor is not running.