| 摘要 |
PURPOSE:To enable to control the temperature of hot water without touching with hot water by hand and consequently prevent the danger of scalding from occurring by a structure wherein a container, on one side of which material to expand and contract due to the change of the temperature of hot water is provided and on the other side of which a spring is provided and between both the sides of which a partition plate is inserted, is bondedly provided onto a hot water delivery side pipe. CONSTITUTION:Because a container 16 is bonded to a hot water delivery pipe 5 and consequently has good heat conductivity, a material 13 expands and contracts in response to the temperature of hot water, resulting in driving a partition plate 15. the driving force of the plate 15 is transmitted through a connecting part 16 integrated with the partition plate 15 to a member 19 and represented by the displacement of the member 19. Because an indicating part 20 contacts with the inclined part 17 of the member 19, the displacement of the member 19 is converted to the displacement of the indicating part 20. Accordingly, because the position of the indicating part 20 shown through a small window 21 provided on a case is changed in accordance with the displacement of the indicating part, the temperature of hot water can be indicated by the position of the part 20 shown through the window 21. In addition, when the temperature of hot water reaches the determined upper limit temperature, the displacement of the member 19 becomes larger, resulting in actuating a microswitch 12 with a small projection 18 and consequently opening a circuit so as to release a safety stick valve 6 in order to close a gas passage and stop the combustion. |
