| 摘要 |
1,170,477. Thermal storage heaters. G. E. CUAZ. 12 Sept., 1967 [13 Sept., 1966; 21 July, 1967], No. 41631/67. Heading F4U. The core of a storage heater is penetrated by flues connected in a closed air-flow circuit and the latter includes at least two parallel air-flow paths which respectively transfer heat to separate fluids. As shown in horizontal crosssection in Fig. 4, the core 1 comprises a plurality of refractory blocks which are threaded by longitudinally extending electrical heating elements 2 and the core is penetrated by transverse flues (Fig. 5, not shown). The flues are connected in series by staggered spaces defined in partitions 7 at the sides of the core and the heated air is discharged through ducts 10 and 12 into respective heat exchange chambers 11, 13. The former contains a coil (Fig. 7, not shown) through which water for space-heating is circulated and the latter contains a coil and a reservoir (Fig. 8, not shown) which form part of a domestic hot-water supply. Air is drawn from chambers 11, 13 by fans 23, 24 for recirculation through the core and the speed of each fan is varied in accordance with the temperature of the water heated in its associated chamber. In the embodiment of Fig. 12, air is circulated through the core 35 by a single fan 36 and passes into a duct 34 which contains two pivoted flaps 40, 41 for controlling the flow of air into any one, or any combination of, three ducts 37, 38, 39. The flaps are thermostatically controlled and their different operative positions are illustrated in Figs. 14 to 20 (not shown). Ducts 37-39 contain heat exchangers 42-44 which respectively provide hot water for central heating, domestic hot water and hot air for space heating. In a further embodiment (Fig. 21, not shown) a single fan draws air through two heat exchangers providing hot water for space heating and domestic hot water. The proportions of air flowing through the heat exchangers, the speed of the fan and a pump in the space heating circuit are all controlled thermostatically. An expansion tank and filling, drainage and relief valves are provided for the water circuits |
