| 摘要 |
1334364 Central heating systems G E LAGSTROM 10 Dec 1970 [10 Dec 1969] 58659/70 Heading F4U [Also in Division B1] Sewage or domestic effluent, e.g. soiled soapy water from handbasin 18 is passed from tank 22 into boiler 24 where the liquor is boiled to produce a foam which contains impurities such as dirt, fat and detergents; this foam is carried by steam up pipe 42, and the foam flows over the upper edge of pipe 42 and through pipe 43 into tank 22, where the foam disperses, the heavy particles settling to form a layer of sludge 44. The steam, separated at the top of pipe 42, may be discharged to the atmosphere, or it may be passed through pipe 50 to vessel 51 which contains water, in contact with which the steam is condensed. The hot water produced in vessel 51 may be drawn off as such, or it may be supplied to domestic radiators 55, 56 by pump 59. If necessary, the water in vessel 51 may be heated by pumping it through a heat exchanger 78 in boiler 24. The mouth 53 of pipe 52 is maintained at a predetermined level beneath the water surface by floats 54. Boiler 24 may be heated by an oil-burner, a gas-burner, or an electric coil. The heat source may be controlled by device 28. |
