| 摘要 |
PURPOSE:To provide a circulating type bath boiler by which fur, hairs and the like are effectively removed and no air reaches a pump even when the air is sucked in the bath boiler by a structure wherein a filter and a tank are provided in the midway of a circulating passage connecting a suction pipe, which sucks supernatant water, with a pump and the upper part of the tank is connected with an ejector device to develop suction by means of the water discharged from the pump. CONSTITUTION:A filter 5 and a tank 6 are provided on the inlet side of a heat exchanger 4 in the midway of a circulating passage connecting a suction pipe 2 with a pump 3 and the heat exchanger 4. An ejector device 8, which develops suction effect by means of the flow of water discharged from the pump 3, and the upper part of the tank 6 are connected with the discharge pipe 7 of the pump 3. In the tank 6, due to the lowering of water flow speed by the sudden widening of the water flow passage area, the air in the water is separated from the water and collected to the upper part of the tank 6 so as to be sucked through a conduit 9 into the ejector device 8 in order to be sent together with the water past through the tank 6 and the heat exchanger 4 and delivered from the pump 3 into a bathtub. Because the water which is free from dust and air circulates to the pump, the durability of the pump also becomes favorable.
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