Liquid discharge regulator and liquid feeder equipped with the same

摘要

A compact liquid discharge regulator is provided at low cost by arranging such that a channel (151) is spirally formed in the surface of a passage forming member (15) , the surface of the passage forming member (15) is brought into close contact with the inner surface of a housing part (14) , and the channel (151) functions as a liquid passage. In this construction, the sectional form and length of the channel (151) can be formed at high precision in accordance with the design. Therefore, a desired pipe loss is obtainable only by designing in advance the sectional form and length of the channel (151) so as to correspond to the pipe loss. Particularly, with injection molding, mass production of a passage forming member of identical pipe loss can be effected merely by preparing a mold corresponding to the pipe loss, thus leading to a considerable reduction in the manufacturing cost of the discharge regulator.