Water supply device

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 h 1 and a smallest longitudinal height h 2, 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 w 1 of the inlet to the two opposite throat portions so as to form a smallest horizontal width w 3, and a lateral width w 2 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.

What is claimed is: 
     
         1 . A water supply device comprising an internal flow channel; a water chamber communicating with an outlet end of the internal flow channel, such that water flows through the water chamber from the outlet end of the internal flow channel, wherein
 the water chamber includes an inlet defined therein and communicating with the internal flow channel, an outlet, a longitudinal height h, a horizontal width w, and a channel length L along a flowing direction; wherein the longitudinal height h has a largest longitudinal height hl formed in the inlet and has a smallest longitudinal height h 2  gradually decreasing to the outlet along the flowing direction;   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 w 1  of the inlet to the two opposite throat portions so as to form a smallest horizontal width w 3 , and a lateral width w 2  of the water chamber gradually increases from the two opposite throat portions to the outlet; the water chamber is defined by two oppositely horizontal fences and two oppositely side fences, the longitudinal height h of the water chamber is defined by a distance between the two oppositely horizontal fences, the horizontal width w of the water chamber is defined by a distance between the two oppositely side fences;   each horizontal fence has a passage defined on a central portion of the horizontal width w and has at least two steps for defining the passage.   
     
     
         2 . The water supply device as claimed in  claim 1 , wherein X/L is within 0.2 to 0.5. 
     
     
         3 . The water supply device as claimed in  claim 1 , wherein w 1 /w 3  is within 1.3 to 1.6. 
     
     
         4 . The water supply device as claimed in  claim 1 , wherein w 2 /w 3  is within 1.3 to 1.6. 
     
     
         5 . The water supply device as claimed in  claim 1 , wherein plural steps are formed on each of two sides of the passage of each horizontal fence. 
     
     
         6 . The water supply device as claimed in  claim 5 , wherein each step has a stopping cliff for stopping the water flowing to two sides of the water chamber and has a V-shaped platform formed on a top end thereof and increasingly tilting to each side fence. 
     
     
         7 . The water supply device as claimed in  claim 6 , wherein a spaced width S is defined by two opposite stopping cliffs of any two opposite steps on each horizontal fence, the spaced width S gradually decreases to the two opposite throat portions from the inlet to form a smallest spaced width S 2 , and the spaced width S gradually increases to the outlet from the two opposite throat portions. 
     
     
         8 . The water supply device as claimed in  claim 6 , wherein a longitudinal height of the passage becomes smallest on a middle portion of the passage and gradually increases along two sides of the passages. 
     
     
         9 . The water supply device as claimed in  claim 1 , wherein the water flows through the outlet of the water chamber from the internal flow channel to produce a flowing speed V, and the flowing speed V has a first partial speed V 1  defined by the outlet and the central portion of the horizontal width w, a second partial speed V 2  is defined by ⅗ to ⅘ of a total length between two sides of the outlet, and V 2 /V 1  is within 1.01 to 1.03. 
     
     
         10 . The water supply device as claimed in  claim 1 , wherein a water supply device is a faucet or a shower head.