| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fluid circulation device for circulating fluid in a branch pipe by fluid flow in a main pipe and setting a temperature of fluid at an upstream side branch pipe and at faucet to a set temperature.SOLUTION: A core 2 is inserted into a branch joint 1 to obstruct a flow 3 in a main pipe. A part of the obstructed flow 3 in the main pipe advances through an inner pipe fitting tube 5 to a hot water supply branch pipe 11, residual of the flow 3 in the main pipe passes by a narrow space of a main flow passage 7 formed at an outer side surface of the core 2 and the bottom part of the core 2 while increasing its flow speed, so that a branch pipe outlet 8 and a branch pipe bottom outlet 9 opened at the bottom part of the core 2 show a negative pressure, a pressure difference is generated between an inlet port 4 and the branch pipe outlet 8 and then a flow in the hot water supply branch pipe 11 starts. A faucet at the extremity end is opened to generate a flow in the main pipe, thereby a circulation flow is generated at a more upstream side branch pipe to enable a temperature of fluid at the branch pipe and the faucet to become a set temperature.</p> |
