Importance

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Abstract

A water supply device contains an internal flow channel and a water chamber with an inlet, an outlet, a longitudinal height h, a horizontal width w, and a channel length L along a flowing direction. The longitudinal height h has a largest longitudinal height h1 and a smallest longitudinal height h2, two opposite throat portions are formed in the water chamber and keep a distance X away from the inlet, the horizontal width w of the water chamber gradually decreases from a horizontal width w1 of the inlet to the two opposite throat portions so as to form a smallest horizontal width w3, and a lateral width w2 of the water chamber gradually increases from the two opposite throat portions to the outlet. Each horizontal fence has a passage defined on a central portion of the horizontal width w and at least two steps for defining the passage.

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First Claim