| 摘要 |
PURPOSE: A refrigerant supplier of a blending bunker having a 5 way step valve is provided to supply a refrigerant by selectively connecting a direct cooling typed room and an indirect cooling typed room to four discharge pipes according to a switching sequence of a 5 way step valve. CONSTITUTION: A refrigerant supplier of a blending bunker having a 5 way step valve comprises a 5 way step valve(30), a first evaporator and a fourth evaporator(51,54), a second evaporator and a third evaporator(52,53), and a control unit(70). The 5 way step valve has an inlet tube(35) in which a refrigerant is flowed in, and a first to the a fourth discharge pipes(31-34). The 5 way step valve discharges a refrigerant by successively opening and closing the first to the fourth discharge pipes in each step. The first evaporator and the fourth evaporator are connected to the first discharge pipe and the fourth discharge pipe. The second evaporator and the third evaporator are connected to the second discharge pipe and the third discharge pipe. The control unit drives the 5 way step valve according to a cooling condition of a first and a second direct cooling typed rooms(110,140), and a first and a second indirect cooling typed rooms(120,130). [Reference numerals] (10) Compressor; (20) Condenser; (51) First evaporator; (52) Second evaporator; (53) Third evaporator; (54) Fourth evaporator; (70) Control unit
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