Patent ID: 7201016
Filing Date: 2007-04-10
Classification: G03F,H01L

Abstract:
1. A refrigerant supply apparatus for supplying a refrigerant to a cooling target, the apparatus comprising: a refrigerant supply channel through which pure water as the refrigerant is supplied to the cooling target; an impurity removing unit disposed in an impurity removing channel which is a channel different from said refrigerant supply channel; a sensor which measures a purity of the pure water; a valve which stops supply of the pure water to the cooling target when the purity of the pure water does not satisfy a predetermined standard; a first pump provided to said refrigerant supply channel; and a second pump provided to said impurity removing channel, wherein said first and second pumps are controlled independently of each other, such that said first pump is stopped when the purity of the pure water does not satisfy the predetermined standard, and that said second pump is stopped when the purity of the pure water satisfies the predetermined standard.