Ice making and unfreezing control device for an ice-making machine

Abstract

An ice making and unfreezing control device for an ice-making machine includes a compressor, a condenser, an electric magnetic valve, a dryer, a vaporizer, a liquid reservoir and a temperature sensor. The vaporizer has its underside provided with plural ice-making rods. The temperature inductor is positioned on the exit pipe of the vaporizer. By so designing, ice blocks can be made quickly, and when the temperature of the exit pipe of the vaporizer, detected by the temperature sensor, reaches the set value of unfreezing temperature, all the ice blocks will be separated from the ice-making rods, and the unfreezing work will be stopped and the electric magnetic valve will be turned off. Then, shoveling of the ice blocks begins and next cyclic ice-making work proceeds, able to quickly make ice blocks with a same size and shape and convenient to carry out unfreezing.

1 . An ice making and unfreezing control device for an ice-making machine comprising a compressor, a condenser, an electric magnetic valve, a dryer, a vaporizer, a liquid reservoir and a temperature inductor, said vaporizer having its underside provided with a plurality of ice-making rods, said vaporizer provided with an entrance pipe and an exit pipe, said temperature inductor positioned on said exit pipe of said vaporizer.  
   
   
       2 . The ice making and unfreezing control device for an ice-making machine as claimed in  claim 1 , wherein said compressor is provided with an exit connecting pipe connected with said condenser and an entrance connecting pipe connected with said liquid reservoir, said condenser having its entrance connected with a compressor connecting pipe and an electric magnetic valve connecting pipe, said electric magnetic valve having its entrance connected with said condenser and its exit provided with a vaporizer connecting pipe connected with said vaporizer, said condenser having its exit connected with said dryer, said dryer having the other end connected with a capillary tube, said capillary tube having its outer end linked with said vaporizer connecting pipe of said electric magnetic valve and connected with the entrance pipe of said vaporizer, said vaporizer having its exit pipe connected with said liquid reservoir.  
   
   
       3 . The ice making and unfreezing control device for an ice-making machine as claimed in  claim 1 , wherein the set value of unfreezing temperature of said vaporizer is ≧25° C., and when the temperature of said exit pipe of said vaporizer, detected by said temperature inductor, reaches said set value of unfreezing temperature, it indicates that all the ice blocks are completely separated from said ice-making rods, and synchronously the unfreezing work is stopped and said electric magnetic valve is turned off.