Improvements in or connected with Water Circulating Apparatus for Hot-water Circulating Systems.

摘要

104,548. Gould, H. W., and Florence, A. P. March 10, 1916. Heating buildings &c.-Relates to a hot-water circulating system having means in conjunction with the elevated expansion tank for accelerating the circulation. The expansion tank b into which water is delivered through a pipe a from the boiler, and from which water passes through a pipe c to the radiators &c., is fitted with a suction outlet tube d having an inlet below the water-level in the tank, and an outlet communicating directly or indirectly with the pipe c. Fig. 1 shows the outlet portion d2 of the tube d communicating directly with the pipe c and fitted with a valve d3, which may be closed to put the accelerator out of action. In modified arrangements, the portion d2 communicates with the pipe c through a separate tank, which may be connected to a back-flow and cold-water feed tank. Fig. 4 shows a modification in which the inlet to the tube d is formed by a bell-shaped cover h. To regulate the expansion in the tank b, a valve i1 is provided in a pipe i leading from the tank or from the pipe a to the boiler.