| 摘要 |
<p>An apparatus to control a flow of heated water from a boiler to a water outlet comprises a main housing 602 defining an inlet 603, outlet 604 and a flow path extending therebetween. The apparatus includes first 201 and second 301 devices. The first device restricts the heated water flow when the temperature of the water is below a first predetermined value and may include a bypass channel 204 enabling permanent flow of heated water through the apparatus. Ideally, the first device comprises a first thermostatic assembly 207 having a temperature-sensitive expandable material that pushes a first rod against a retaining wall element 210 so as to resist a force of a spring to open a variable opening 205. The second device injects a flow of cold water when the temperature of the heated water is above a second predetermined value. Ideally, the second device comprises a second thermostatic assembly 307 having expandable material that pushes a second rod against the retaining wall element to move an element 606 of the second assembly into contact with a flow restrictor 311, thereby creating an opening 312 to permit the injection of cold water from an auxiliary tube 306.</p> |
