Refrigeration and freezing control system and method

Abstract

A refrigeration and freezing control system and method thereof, which stores an object for preservation without quality deterioration for a long period, and which controls a supercooling or maintains freshness by controlling a frequency range. The refrigeration and freezing control system includes an electrode module having an anode and a cathode which faces the anode, and an electric field applying module which applies a voltage to the anode and the cathode, which generates an electric field having at least two frequency ranges between the anode and the cathode, and controls a frequency range of the applied voltage.

1 . A refrigeration and freezing control system, the system comprising:
 an electrode module comprising an anode, and a cathode which faces the anode; and   an electric field applying module to apply a voltage to the anode and the cathode, to generate an electric field comprising at least two frequency ranges between the anode and the cathode, and to control a frequency range of the applied voltage.   
   
   
       2 . The system of  claim 1 , wherein the electrode module comprises at least two anodes and at least two cathodes, an electric field comprising a first frequency range is generated in a first anode and a first cathode, an electric field comprising a second frequency range is generated in a second anode and a second cathode, and the at least two anodes and cathodes form a polyhedral structure. 
   
   
       3 . The system of  claim 2 , wherein the first frequency range is from 1 kHz to 10 MHz, and the second frequency range is less than 1 kHz. 
   
   
       4 . The system of  claim 1 , wherein the electric field applying module alternately applies a voltage of a first frequency range and a voltage of a second frequency range to the electrode module. 
   
   
       5 . The system of  claim 4 , wherein the first frequency range is from 1 kHz to 10 MHz, and the second frequency range is less than 1 kHz. 
   
   
       6 . The system of  claim 4 , wherein the anode and the cathode of the electrode module comprise at least two anodes and cathodes, and the at least two anodes and cathodes form a polyhedral structure. 
   
   
       7 . The system of  claim 1 , wherein the electric field applying module applies a voltage of a first frequency range and a voltage of a second frequency range to the electrode module by a superposition. 
   
   
       8 . The system of  claim 7 , further comprising:
 a temperature sensor module to compare a sensed temperature of an object for preservation with a predetermined critical temperature,   wherein the electric field applying module applies the voltage of the first frequency range by dominantly superposition when a temperature which is measured by the temperature sensor module is less than the predetermined critical temperature, and the electric field applying module applies the voltage of the second frequency range by dominantly superposition when the temperature which is measured by the temperature sensor module is greater than the predetermined critical temperature.   
   
   
       9 . The system of  claim 7 , wherein the first frequency range is from 1 kHz to 10 MHz, and the second frequency range is less than 1 kHz. 
   
   
       10 . The system of  claim 7 , wherein the anode and the cathode of the electrode module comprise at least two anodes and cathodes, and the at least two anodes and cathodes form a polyhedral structure. 
   
   
       11 . The system of  claim 1 , further comprising:
 a temperature sensor module to compare a sensed temperature of an object for preservation with a predetermined critical temperature,   wherein the electric field applying module applies a voltage of a first frequency range when a temperature which is measured by the temperature sensor module is less than the predetermined critical temperature, and the electric field applying module applies a voltage of a second frequency range when the temperature which is measured by the temperature sensor module is greater than the predetermined critical temperature.   
   
   
       12 . The system of  claim 11 , wherein the first frequency range is from 1 kHz to 10 MHz, and the second frequency range is less than 1 kHz. 
   
   
       13 . The system of  claim 11 , wherein electrode module comprises at least two anodes and cathodes, and the at least two anodes and cathodes form a polyhedral structure. 
   
   
       14 . The system of  claim 11 , wherein the critical temperature is determined to be from −7° C. to 0° C., when the object of preservation is meat. 
   
   
       15 . The system of  claim 11 , wherein the critical temperature is determined to be from −3° C. and 0° C., when the object of preservation is fish and shellfish. 
   
   
       16 . The system of  claim 11 , wherein the critical temperature is determined to be from −3° C. and 0° C., when the object of preservation is a vegetable and fruit. 
   
   
       17 . A refrigeration and freezing control system storing an object for preservation, the system comprising:
 an electrode module comprising an anode and a cathode which faces the anode; and   an electric field applying module to apply a voltage to the anode and the cathode, to generate an electric field comprising at least two frequency ranges between the anode and the cathode, and to control a frequency range of the applied voltage, thereby controlling a supercooling and maintaining freshness of the object for preservation.   
   
   
       18 . The refrigeration and freezing control system of  claim 17 , wherein the system is a single system comprising a refrigeration device and a freezing device formed together. 
   
   
       19 . The refrigeration and freezing control system of  claim 17 , wherein the system simultaneously performs microorganism control and antioxidation in the object for preservation in an unfrozen state. 
   
   
       20 . The refrigeration and freezing control system of  claim 17 , wherein a configuration of the electrode module corresponds to a form of the object for preservation. 
   
   
       21 . The refrigeration and freezing control system of  claim 17 , wherein the electric field applying module comprises:
 a first oscillation unit which forms a voltage of a first frequency range;   a second oscillation unit which forms a voltage of a second frequency range; and   a waveform conversion unit which generates a single output electric field based on an electric field of the first frequency range and an electric field of the second frequency range as input electric fields.   
   
   
       22 . The refrigeration and freezing control system of  claim 21 , wherein the voltage of the first frequency range forms a high frequency electric field in the electrode module of 1 kHz to 10 MHz, and the voltage of the second frequency range forms a low frequency electric field of less than 1 kHz. 
   
   
       23 . The refrigeration and freezing control system of  claim 22 , wherein the microorganism control and the antioxidation are performed in the low frequency electric field of the second frequency range, and when the high frequency electric field of the first frequency range which controls supercooling is cut, the object for preservation is frozen. 
   
   
       24 . The refrigeration and freezing control system of  claim 21 , further comprising:
 a temperature module to compare a sensed temperature of the object for preservation with a predetermined critical temperature, and   the electric filed applying module further comprises a switching module to compare the critical temperature of the object for preservation with the temperature measured in the temperature sensor module by interoperating with the temperature sensor module, and to connect the electrode module and the first or second oscillation units.   
   
   
       25 . A method of controlling a refrigeration and freezing system to store an object for preservation, the method comprising:
 applying a voltage to an anode and a cathode which face the anode;   generating an electric field including at least two frequency ranges between the anode and the cathode; and   controlling a frequency range of the applied voltage.