Ice storage constant temperature air conditioning system having divided refrigerant

Abstract

An ice storage constant temperature air conditioning system having divided refrigerant has a refrigerant divider to divide refrigerant flow into two ducts. The first duct is connected to an evaporator to absorb a great amount of latent heat to generate refrigeration. The refrigerant flows to an ice storage refrigerant loop of an ice storage tank to store ice. The second duct directly sends the refrigerant to the ice storage refrigerant loop to store the ice. Hence the refrigerant can be fully used or used in a divided fashion. A condensate collection tray is provided below the evaporator to recycle heat of low temperature condensate during operation of air conditioning to automatically replenish the chill water of the ice storage tank. The refrigerant at the condensate outlet is cooled during ice storing or ice melting period to become a subcooling liquid refrigerant to enhance refrigeration effect.

1 . An ice storage constant temperature air conditioning system having divided refrigerant, comprising:
 a compressor to compress the refrigerant to become over-heated in a gas phase;   a condenser to receive and cool the over-heated gas refrigerant to become a liquid phase; and   a refrigerant divider to receive the cooled and liquid refrigerant through a liquid duct and automatically divide the liquid refrigerant into a first duct and a second duct;   wherein the cooled and liquid refrigerant flows through the first duct and a heat exchanger located thereon to become a subcooling liquid refrigerant at a high pressure and a low temperature, the subcooling liquid refrigerant passing through an air conditioning expansion valve to become a saturated and mist type refrigerant in liquid and gas phases to enter an evaporator, the evaporator absorbing a great amount of latent heat and sensible heat to generate refrigeration, residual refrigerant entering an ice storage refrigerant loop to store ice;   wherein the second duct delivers a portion of the cooling liquid refrigerant to the ice storage refrigerant loop after being expanded through an ice storage expansion valve to absorb a great amount of latent heat to store the ice; the refrigerant in the ice storage refrigerant loop being sent to the compressor through a gas duct to complete a refrigerant circulation cycle.   
   
   
       2 . The ice storage constant temperature air conditioning system of  claim 1 , wherein the refrigerant divider closes the first duct to allow all of the refrigerant to flow into the second duct during a no load condition of a cooling room. 
   
   
       3 . The ice storage constant temperature air conditioning system of  claim 1 , wherein the refrigerant divider controls the ratio of the refrigerant in the first duct and the second duct according to a room temperature during a low load condition of a cooling room so that the refrigerant amount in the first duct alters according to required amount of the refrigerant in the evaporator and the rest of the refrigerant is distributed to the second duct. 
   
   
       4 . The ice storage constant temperature air conditioning system of  claim 1 , wherein the refrigerant divider closes the second duct to allow all of the refrigerant to generate a phase change and flow into the evaporator through the first duct during a full load condition of a cooling room. 
   
   
       5 . The ice storage constant temperature air conditioning system of  claim 1 , wherein the refrigerant divider channels all of the refrigerant to the evaporator through the first duct and the heat exchanger melts the ice during a high load condition of a cooling room, and cooled energy in the ice stored in a no load condition and a low load condition of a cooling room is released. 
   
   
       6 . The ice storage constant temperature air conditioning system of  claim 1  further having a condensate collection tray located below the evaporator to recycle heat of low temperature condensate generated during operation of air conditioning to automatically replenish chill water in an ice storage tank of the system.