Refrigerator

Abstract

A refrigerator in which a two-stage-compression mode power-variable refrigerant circuit having a freezer cooler and fresh-food cooler is controlled in accordance with information on temperature in the fresh-food compartment. Thus, each of the freezer and fresh-food compartment is properly controlled at a temperature for storing. The refrigerant circuit includes an inverter-driven power-variable compressor having a low-pressure compression element and a high-pressure compression element, a switching valve disposed downstream of a condenser receiving gas refrigerant discharged from the compressor and selecting and controlling channel and flow rate of the refrigerant, and a freezer cooler and a fresh-food cooler, each connected with the switching valve through a pressure reducer. A frequency of the compressor is decided by a temperature in the freezer compartment and its target temperature.

1 . A refrigerator having a refrigerant circuit comprising: 
 an inverter-driven power-variable compressor having a low-pressure compression, element and a high-pressure compression element; a switching valve that is disposed on downstream of a condenser receiving gas refrigerant discharged from the compressor and selects and controls flow channel and flow rate of refrigerant; and coolers, for freezer and fresh-food compartments, each connected with the switching valve through a pressure reducer; and wherein frequency of the compressor is decided by temperature in the freezer compartment and its target temperature.    
   
   
       2 . A refrigerator having a refrigerant circuit comprising: 
 an inverter-driven power-variable compressor having a low-pressure compression element and a high-pressure compression element; a switching valve that is disposed on downstream of a condenser receiving gas refrigerant discharged from the compressor and selects and controls channel and rate of flowing of the refrigerant; and coolers, for freezer and fresh-food compartments, each connected with the switching valve through a pressure reducer; and wherein frequency of the compressor is decided by temperature in the fresh-food compartment and its target temperature and wherein on deciding of the frequency, feedback rate of temperature information from the freezer compartment is set larger than that from the fresh-food compartment.    
   
   
       3 . A refrigerator according to  claim 2 , wherein, only when temperature of the fresh-food compartment is higher than its target temperature, information on. such temperature is adopted in deciding the frequency of the compressor.  
   
   
       4 . A refrigerator according to  claim 1 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a fresh-food cooling fan is increased.  
   
   
       5 . A refrigerator according to  claim 1 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a freezer cooling fan is increased.  
   
   
       6 . A refrigerator according to  claim 2 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a fresh-food cooling fan is increased.  
   
   
       7 . A refrigerator according to  claim 3 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a fresh-food cooling fan is increased.  
   
   
       8 . A refrigerator according to  claim 2 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a freezer cooling fan is increased.  
   
   
       9 . A refrigerator according to  claim 3 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a freezer cooling fan is increased.  
   
   
       10 . A refrigerator according to  claim 4 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a freezer cooling fan is increased.  
   
   
       11 . A refrigerator according to  claim 6 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a freezer cooling fan is increased.  
   
   
       12 . A refrigerator according to  claim 7 , wherein, when temperature of the fresh-food compartment is higher than its target temperature, frequency of a freezer cooling fan is increased.