Small-sized hydroelectric generator
AssigneeTaiyo Kagaku Co., Ltd.
InventorsHiroshi Motonaka, Yoshio Shiozaki
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Abstract
A rotator with an impeller and a stator generating an induced voltage are arranged in a casing. The tap water flowing flows through a main passage, which has a first jet orifice facing the impeller, and rotates the impeller. A bypass running from the inflow port and passing around an outer periphery of the stator is provided. When the water pressure is high, a check valve closing the bypass is opened against a spring force and the water flows out to a drain port, while the impeller is stably rotated by a pressure of water jetted from a second jet orifice penetrating from the bypass to face the impeller, which pressure is in reverse proportion to a speed of flow inside the bypass.
Claims2
In a small-sized hydroelectric generator for generating electricity by having an impeller rotate by means of water flow, which has a casing provided with an inflow port at an end and an outflow port at the other end of the casing, an impeller, a rotator rotating integrally with the impeller, and a stator generating electricity arranged in the casing, the hydroelectric generator comprising;
- a main passage running from the inflow port through a center part of the rotator to the outflow port as water flow passages,
- a bypass running around an outer peripheral side of the stator from the inflow port to the outflow port, and
- a check valve provided inside the bypass which is urged by a spring in a direction of stopping a flow of water from the inflow port.
Dependencies are inferred from the claim text.