| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a nozzle device capable of emitting a jet of oscillating flow in a small and simple constitution. <P>SOLUTION: This nozzle device includes a nozzle body 300, an exhaust nozzle 320 for emitting a jet of washing water, and a main water channel 312 for supplying the washing water. The exhaust nozzle 320 is formed in a two-tire shape in which small and large hole portions 321 and 322 are connected together; the main water channel 312 is larger than an opening area of the small hole portion 321; the main water channel 312 and the small hole portion 321 are connected together in such a manner that an annular step portion 314 is formed on an entire perimeter; and a pressure communication passage 317 for making at least two opposed locations of the step portion 314 communicate with each other is provided. Thus, the washing water flowing into the small hole portion from the main water channel makes a pressure difference in the step portion; and pressure is mutually propagated to opposed sides via the pressure communication passage. Consequently, the washing water flowing into the small hole portion can be oscillated; and the washing water turned into the oscillating flow can amplify pulsation when flowing into the large hole portion from the small hole one, so as to be turned into the oscillating flow with a sense of strong pulsation. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
