| 摘要 |
The pump is designed to compulsorily circulate hot water. As power is applied to a fixer(31) of a motor housing(30), a rotor(32) and a shaft(40) rotate and an impeller(25) mounted on the shaft(40) is rotated in an impeller chamber(24) of a pump housing(21) divided by a motor-canned shield(26), thereby compulsorily circulating hot water. A curved projection(25-1) is formed to provide an inlet chamber(25-2) in the center of the inner bottom surface of the impeller(25). The projection(25-1) is provided with a plurality of outlet holes(25-3) apart from each other at a constant interval, and the motor-canned shield (26) is provided with a plurality of through holes(27). A tapered guide passage(43) is formed in the lengthwise direction at the center of the shaft(40) into which upper and lower bearings(33)(34) are inserted, so that the inlet chamber(25-2) of the impeller(25) is connected with a space(36) of a bearing holder(37).
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