Hydraulic power generating device

• US 20050006903A1
• Filed: 05/19/2004
• Published: 01/13/2005
• Est. Priority Date: 05/19/2003
• Status: Active Grant

• Current Assignee: Nidec Sankyo Corporation (Nidec Corporation)
• Original Assignee: Nidec Sankyo Corporation (Nidec Corporation)
• Inventors: Yumita, Yukinobu, Kumagai, Hideo
• Granted Patent: US 7,005,758 B2
• Time in Patent Office: Days
• US Class Current: 290/43
• CPC Class Codes: F03B 13/00 Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus if the apparatus aspects are predominant, see the relevant subclasses for such apparatus, e.g. H02K7/18; Power stations or aggregates incorporating only machines or engines of positive-displacement type F03C; hydraulic engineering aspects E02B; combinations with wind energy converters F03D9/008
• CPC Class Codes: F05B 2240/911 already existing for a prior purpose
• CPC Class Codes: H02K 7/1823 structurally associated with turbines or similar engines

Abstract

A hydraulic power generating device includes a main body case forming a flow passage provided with a water wheel chamber between a fluid inlet port and a fluid outlet port, a cover covering the main body case, a water wheel for power generation disposed in the water wheel chamber, a rotor magnet for rotating in cooperation with the water wheel. An ejection port including a groove is formed on the main body case for ejecting fluid toward the blades of the water wheel at a high speed and an protrusion part is formed on the cover for adjusting the aperture area of the ejection port by entering into the groove. Further, a discharge space is formed at a downstream position of the water wheel chamber so as to be in communication with the fluid outlet port, to which fluid after having rotated the water wheel is ejected and a stagnation preventing protrusion part is formed in the discharge space to facilitate flow of air bubbles to the fluid outlet port.

Claims

1. A hydraulic power generating device comprising:

a main body case which forms a flow passage provided with a water wheel chamber between a fluid inlet port and a fluid outlet port;

a cover which covers an upper face of the main body case;

a water wheel for power generation which is disposed in the water wheel chamber;

a rotor magnet which rotates in cooperation with the water wheel for power generation;

at least an ejection port including a groove which is formed on one of the main body case and the cover for ejecting fluid toward blades of the water wheel for power generation at a high speed; and

at least an protrusion part which is formed on the other of the main body case and the cover for adjusting an aperture area of the ejection port by entering into the groove.

2. The hydraulic power generating device according to claim 1, wherein the groove for forming the ejection port is formed on the upper face of the main body case and the protrusion part is formed on an under face of the cover.

3. The hydraulic power generating device according to claim 2, further comprising:

a ring-shaped recessed part formed on the upper face of the main body case;

a ring-shaped conduit passage which is constructed by the ring-shaped recessed part of the main body case and the cover;

a plurality of ejection ports formed on the upper face of the main body case for ejecting fluid from the ring-shaped conduit passage toward the blades of the water wheel for power generation; and

a plurality of protrusion parts formed on the cover for adjusting aperture areas of the respective ejection ports.

4. The hydraulic power generating device according to claim 3, wherein the plurality of protrusion parts include those with different protruding sizes.

5. The hydraulic power generating device according to claim 1, wherein the fluid is water ejected from a faucet.

6. A hydraulic power generating device comprising:

a flow passage provided with a water wheel chamber between a fluid inlet port and a fluid outlet port;

a water wheel for power generation which is disposed in the water wheel chamber;

a rotor magnet which rotates in cooperation with the water wheel for power generation;

a discharge space formed at a downstream position of the water wheel chamber so as to be in communication with the fluid outlet port, to which fluid after having rotated the water wheel for power generation is ejected; and

a stagnation preventing protrusion part which is formed in the discharge space to facilitate flow of air bubbles to the fluid outlet port.

7. The hydraulic power generating device according to claim 6, wherein the water wheel chamber and the discharge space are respectively formed in a cylindrical space.

8. The hydraulic power generating device according to claim 6, wherein the stagnation preventing protrusion part is formed on a bottom face of the discharge space at the downstream position of the water wheel chamber.

9. The hydraulic power generating device according to claim 8, further comprising a boss formed on the bottom face of the discharge space for supporting a lower end part of a rotation center shaft of the water wheel for power generation.

10. The hydraulic power generating device according to claim 9, wherein the stagnation preventing protrusion part is a rib which extends from the boss in a radial direction.

11. The hydraulic power generating device according to claim 10, wherein the stagnation preventing protrusion part is formed to be extended from the boss toward the fluid outlet port.

12. The hydraulic power generating device according to claim 6, wherein the fluid is water ejected from a faucet.