Power saving compressor and control logic

Abstract

An air conditioner control method may entail measuring an evaporator first temperature at an exit side of the evaporator, maintaining the evaporator first temperature, measuring a length of time that the evaporator maintains the evaporator first temperature, providing a user-set evaporator target temperature; and reducing a rate of refrigerant compressed by a compressor based on a relationship between the length of time that the evaporator maintains the evaporator first temperature and the evaporator target temperature. Furthermore, an air conditioner control method utilizing a condenser and a cold storage unit may entail turning off an air conditioner compressor, maintaining operation of a condenser cooling fan, closing a thermostatic expansion valve, opening a bleed port to bypass the thermostatic expansion valve, and receiving a liquid refrigerant into the cold storage unit from the condenser after the refrigerant passes through a thermostatic expansion valve bleed port and the evaporator.

What is claimed is: 
     
         1 . An air conditioner control method utilizing a cold storage unit, the method comprising:
 terminating operation of an air conditioner compressor;   maintaining operation of a condenser cooling fan after terminating operation of the air conditioner compressor;   closing a thermostatic expansion valve; and   opening a bleed port as a bypass of the thermostatic expansion valve.   
     
     
         2 . The air conditioner control method of  claim 1 , further comprising:
 receiving liquid refrigerant into the evaporator from the condenser.   
     
     
         3 . The air conditioner control method of  claim 1 , further comprising:
 receiving liquid refrigerant into the evaporator from the condenser after the liquid refrigerant passes through a bleed port to bypass the thermostatic expansion valve.   
     
     
         4 . The air conditioner control method of  claim 1 , further comprising:
 forcing a liquid refrigerant from a condenser at a first pressure into a cold storage unit at a second pressure, wherein the first pressure is higher than the second pressure.   
     
     
         5 . The air conditioner control method of  claim 1 , wherein the liquid refrigerant passes through a bleed port to bypass the thermostatic expansion valve and then an evaporator before the liquid refrigerant is forced into the cold storage unit. 
     
     
         6 . An air conditioner control method utilizing a condenser and a cold storage unit, the method comprising:
 turning off an air conditioner compressor;   maintaining operation of a condenser cooling fan;   closing a thermostatic expansion valve;   opening a bleed port to bypass the thermostatic expansion valve;   receiving a liquid refrigerant into the cold storage unit from the condenser after the refrigerant passes through a thermostatic expansion valve bleed port and the evaporator.   
     
     
         7 . The air conditioner control method of  claim 6 , wherein receiving the liquid refrigerant into the cold storage unit is governed by a pressure in the condenser that is higher than a pressure in the cold storage unit.