PROTECTION OF PRESSURE SENSOR OF AUTOMATIC BATH WITH HOT WATER SUPPLYING APPARATUS

摘要

PURPOSE:To prevent an excess pressure from being applied to a pressure sensor by shutting OFF between a circulation additional combustion conduit and a pressure sensor chamber before water flows to the conduit when the wafer flows to the conduit. CONSTITUTION:A pressure sensor chamber 10 is connected to a circulation additional combustion conduit 5 through a directional control valve 9, and a pressure sensor 8 is disposed in the chamber 10. The valve 9 may switch between a state for shutting OFF the chamber 10 from the conduit 5 to communicate with the conduit and a state for communicating the chamber 10 with a bathtub 12. When water flows to the conduit 5, the valve 9 is so controlled as to shut OFF the chamber 10 from the conduit 5 before the water flows to the conduit 5.