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 unit본 발명은 5웨이 스탭밸브를 갖는 혼합 저장고의 냉매 공급장치에 관한 것으로서, 1개의 유입관과 4개의 배출관을 갖는 5웨이 스탭밸브를 갖는 혼합 저장고의 직냉식룸과 간냉식룸을 5웨이 스탭밸브의 개폐순서에 따라 4개의 배출관에 선택적으로 연결하여 냉매 공급이 이루어질 수 있도록 함으로써 중간에 위치한 배출관의 불필요한 개폐로 인해 냉매의 공급이 이루어지더라도 고내온도의 편차를 최소화할 수 있다.
