| 摘要 |
<p>PURPOSE:To miniaturize and simplify the constitution of the above valve by providing a variable bias means and respective resistance means of hot water side and water side between secondary sides of valve bodies of hot water and water and a confluence of a hot water flow passage and a water flow passage. CONSTITUTION:Hot water and water are introduced into a cylinder 24 through a hot water and water passages 19, 20, and after passing through a hot water side valve body 27 and a water side valve body 28 pressure of one side becomes higher by the pressure corresponding to the force given with a solenoid 35. The ratio hot water to water is decided by flow ratio decided by the pressure difference and the resistance values of orifices 37, 38, and mixing of them is promoted by the opposed orifices 37, 38. When the temperature detected with a thermistor 39 does not coincide with the temperature set in a setting apparatus 41, the bias force due to the solenoid 35 is changed to change mixing ratio, and appropriate temperature is obtained. When the pressure of hot water or water varies at supply of mixed hot water, it functions to hold the secondary pressure in the same condition as before variation similar to the customary pressure control valve, and the temperature of mixed hot water does not vary so much. Further, even at changing hot water quantity, the secondary pressure are kept with a constant pressure difference and variation of the mixed hot water is kept small.</p> |
