首页>
外国专利>
Burner-fired central heating boiler - has ball valve in uptake lifted by gas pressure onto less than ball dia. wide ledge
Burner-fired central heating boiler - has ball valve in uptake lifted by gas pressure onto less than ball dia. wide ledge
展开▼
机译:燃烧式中央供暖锅炉-进气压力使球阀提升到小于球直径。宽壁架
展开▼
页面导航
摘要
著录项
相似文献
摘要
The central heating burner-fired boiler is conventional with temp. sensor controlled firing and a shut off valve in the uptake. This valve comprises a ball (25) seating in the circular inlet (26) to a cylindrical chamber (23). The ball is light enough for the (blown) gas flow to dislodge it, onto a ledge (31) of slightly less than ball-dia. width sloping gently inwards. The control system embodies a pressure-sensor (29, 30) downstream of the valve which delays burner light up until the thermostat (22) operated blower (21) has built up the necessary pressure.
展开▼