Sealed waterproof miniature hydroelectric generator

Abstract

The utility model provides a sealed waterproof miniature hydroelectric generator. The sealed waterproof miniature hydroelectric generator comprises a casing; a base; the driving unit is rotationally arranged in the machine shell and comprises a rotating shaft and an impeller for driving the rotating shaft to rotate, and the impeller is connected to one end of the rotating shaft; the power generation unit comprises a magnetic ring and a coil assembly, the magnetic ring is fixedly arranged outside the rotating shaft and synchronously rotates with the rotating shaft, the coil assembly is fixedly arranged in the machine shell, the machine shell is screwed on the base through threads, a sealing ring is arranged at the joint of the base and the machine shell, the impeller is suspended in the base, a water inlet end cover is arranged outside the impeller, and the lower end of the machine shell is sleeved with the water inlet end cover; a sealing ring is arranged between the water inlet end cover and the machine shell, a sealing ring is arranged between the water inlet end cover and the base, good sealing performance is guaranteed due to the arrangement of the sealing rings among the components, water flow can be prevented from permeating into the machine shell to affect normal work of the generator, and water quality can be prevented from being polluted.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, specifically relating to a sealed and waterproof micro hydroelectric generator. Background Technology

[0002] With the development of technology and the improvement of people's quality of life, miniature hydroelectric generators are widely used in bathroom applications such as shower heads, faucets, night landscapes, and direct drinking water lighting. Although the magnetic ring and coil assembly of existing miniature hydroelectric generators are sealed with resin, water can still enter the magnetic ring and coil assembly from the motor shaft, causing the magnetic ring inside the motor cavity to calcify or rust. This will result in unstable power generation or the motor becoming stuck and unable to generate power. In addition, long-term water accumulation in the motor cavity will cause the water to be discharged when the motor is used again, leading to water pollution. Utility Model Content

[0003] This utility model provides a sealed and waterproof micro hydroelectric generator, which overcomes the shortcomings of the prior art. The technical solution adopted by this utility model to solve its technical problem is as follows:

[0004] A sealed and waterproof micro hydroelectric generator includes: a housing; a base; a drive unit rotatably disposed within the housing, comprising a rotating shaft and an impeller driving the rotating shaft, the impeller being connected to one end of the rotating shaft; and a power generation unit comprising a magnetic ring and a coil assembly, the magnetic ring being fixed outside the rotating shaft and rotating synchronously with the rotating shaft, the coil assembly being fixed inside the housing, the housing being threaded onto the base, a sealing ring being provided at the junction of the base and the housing, the impeller being suspended inside the base, a water inlet cap being provided outside the impeller, the water inlet cap being fitted onto the lower end of the housing, a sealing ring being provided between the water inlet cap and the housing, the lower end of the water inlet cap being inserted into a groove inside the base, and a sealing ring being provided between the water inlet cap and the base.

[0005] Furthermore, the impeller has a groove at its bottom, and ceramic balls are installed in the groove. A wear-resistant gasket is installed at the contact point between the ceramic balls and the water inlet end cap.

[0006] Furthermore, the rotating shaft is a ceramic rotating shaft.

[0007] Furthermore, it also includes a frame and a frame front cover. The frame is placed inside the housing and has a receiving groove. The magnetic ring is placed in the receiving groove. The frame front cover covers the receiving groove and is screwed onto the frame. A sealing ring is provided at the screw joint between the frame front cover and the frame. The coil assembly is wound around the outside of the frame.

[0008] Furthermore, the lower end of the frame front cover is provided with a column, which is sleeved on the lower end of the housing. A sealing ring is provided at the joint, and a ceramic bearing is provided above the sealing ring. The ceramic bearing is sleeved on the rotating shaft.

[0009] Furthermore, a guide post is provided at the center of the upper end face of the frame, the front end of the rotating shaft is inserted into the guide post on the frame, and ceramic balls are provided at the top of the guide post.

[0010] Furthermore, the top inner side of the housing is provided with no less than two grooves or threads, which makes the housing more secure when filled with epoxy resin, and the epoxy resin is less likely to fall off when the generator is used for a long time.

[0011] Furthermore, an electronic voltage regulator is installed inside the top of the housing, above the frame. The electronic voltage regulator can keep the current generated by the generator stable.

[0012] Furthermore, the coil assembly includes two sets of bidirectional wound coils. The two sets of bidirectional wound coils improve the power generation efficiency of the generator.

[0013] Furthermore, epoxy resin is filled between the frame and the housing to keep the generator sealed.

[0014] The beneficial effects of this utility model are:

[0015] The housing is screwed onto the base, and a sealing ring is provided at the junction of the base and the housing; a sealing ring is provided between the water inlet cover and the housing; a sealing ring is also provided between the water inlet cover and the base; a sealing ring is provided at the junction of the lower end of the frame front cover and the lower end of the housing; and a ceramic bearing is provided above the sealing rings, which are fitted onto the rotating shaft. The sealing rings between the components ensure good sealing performance, preventing water from seeping into the housing and affecting the normal operation of the generator, and also preventing water pollution.

[0016] The impeller has a groove at the bottom with ceramic balls inside to prevent friction between the impeller and the inlet cover when the impeller rotates. The guide posts on the frame also have ceramic balls, which prevents friction between the shaft and the frame and increases the service life of the motor. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is a three-dimensional exploded view of the present invention.

[0020] Figure 3 This is a cross-sectional view of the present invention.

[0021] Figure 4 This is a schematic diagram of the casing and water inlet end cap structure of this utility model.

[0022] Figure 5This is a schematic diagram of the coil assembly in this utility model.

[0023] Figure 6 This is a schematic diagram of the skeleton and the front cover of the skeleton in this utility model.

[0024] Figure 7 This is a schematic diagram of the skeleton structure in this utility model.

[0025] Figure 8 This is a schematic diagram of the housing and electronic voltage regulator board in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Housing; 2. Electronic voltage regulator board; 3. Coil assembly; 4. Frame; 5. Guide column; 6. No. 1 sealing ring; 7. Frame front cover; 8. Column; 9. No. 2 sealing ring; 10. Inlet end cover; 11. Impeller; 12. No. 1 ceramic ball bearing; 13. Wear-resistant gasket; 14. No. 2 ceramic ball bearing; 15. Shaft; 16. Magnetic ring; 17. Washer; 18. No. 3 sealing ring; 19. No. 5 sealing ring; 20. Base; 21. Inlet; 22. Outlet; 23. Wire; 24. Groove hole; 25. Thread; 26. Detailed Implementation

[0028] Please refer to Figures 1-8 This utility model discloses a sealed and waterproof micro hydroelectric generator, comprising: a housing 1; a base 21; a drive unit rotatably disposed within the housing 1, and including a rotating shaft 13 and an impeller 9 driving the rotating shaft to rotate, the rotating shaft 13 being a ceramic rotating shaft, the impeller being connected to one end of the rotating shaft 13; and a power generation unit, including a magnetic ring 15 and a coil assembly 3, the magnetic ring 15 being fixed outside the rotating shaft 13 and rotating synchronously with the rotating shaft 13, a bushing being placed between the magnetic ring 15 and the rotating shaft 13 for an interference fit, and a washer being provided below the magnetic ring 15. The coil assembly 3 is fixed inside the housing 1 and fitted onto the rotating shaft. The housing 1 is screwed onto the base 21. A first sealing ring 5 is provided at the junction of the base 21 and the housing 1. The impeller 9 is suspended inside the base 21. An inlet end cover 8 is provided outside the impeller 9. The inlet end cover 8 is fitted onto the lower end of the housing 1. A fourth sealing ring 19 is provided between the inlet end cover 8 and the housing 1. The lower end of the inlet end cover 8 is inserted into the groove inside the base 21. A fifth sealing ring 20 is provided between the inlet end cover 8 and the base 21. A groove is provided at the bottom of the impeller 9. A first ceramic ball 10 is provided in the groove. A wear-resistant gasket 11 is provided at the junction of the inlet end cover 8 and the first ceramic ball 10.

[0029] The frame 4 is placed inside the housing 1. The frame 4 has a receiving groove. The magnetic ring 15 is placed in the receiving groove. The frame front cover 6 covers the receiving groove. The frame front cover 6 is screwed onto the frame 4. A second sealing ring 7 is provided at the screw joint between the frame front cover 6 and the frame 4. The coil assembly 3 is wound around the outside of the frame 4. The coil assembly 3 includes two sets of bidirectional winding coils. A column 61 is provided at the lower end of the frame front cover 6. The column 61 is sleeved on the lower end of the housing 1. A third sealing ring 18 is provided at the joint. A ceramic bearing 17 is provided above the third sealing ring 18. The ceramic bearing 17 is sleeved on the rotating shaft 13. A guide post 41 is provided at the center of the upper end face of the frame 4. The front end of the rotating shaft 13 is inserted into the guide post 13 on the frame 4. A second ceramic ball 12 is provided at the top of the guide post 13.

[0030] The top inner side of the housing 1 is provided with no fewer than two recessed holes 25 or threads 26, and epoxy resin is filled between the housing 1 and the frame 4. An electronic voltage regulator 2 is provided inside the top of the housing 1 and above the frame 4.

[0031] When in use, water flows in from the inlet 22 and enters the inlet end cover 8, impacting the impeller 9. The impeller 9 rotates, which in turn drives the rotating shaft 13 to rotate synchronously. The rotating shaft 13 drives the magnetic ring 15 to rotate synchronously. The magnetic field generated by the magnetic ring 15 cuts the coil assembly 3 to generate current.

[0032] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A sealed and waterproof micro hydroelectric generator, comprising: A casing; A base; a drive unit rotatably disposed within the housing, comprising a rotating shaft and an impeller driving the rotating shaft to rotate, the impeller being connected to one end of the rotating shaft; a power generation unit comprising a magnetic ring and a coil assembly, the magnetic ring being fixed outside the rotating shaft and rotating synchronously with the rotating shaft, the coil assembly being fixed inside the housing; characterized in that the housing is threaded onto the base, a sealing ring is provided at the junction of the base and the housing, the impeller is suspended inside the base, a water inlet cap is provided outside the impeller, the water inlet cap is fitted onto the lower end of the housing, a sealing ring is provided between the water inlet cap and the housing, the lower end of the water inlet cap is inserted into a groove inside the base, and a sealing ring is provided between the water inlet cap and the base.

2. A sealed, waterproof, micro hydroelectric generator according to claim 1, wherein: The impeller has a groove at its bottom, and ceramic balls are installed in the groove. A wear-resistant gasket is installed at the contact point between the ceramic balls and the water inlet end cover.

3. A sealed, waterproof, micro-hydraulic generator according to claim 1, characterized in that: The shaft is a ceramic shaft.

4. A sealed, waterproof, micro hydroelectric generator according to claim 1, wherein: It also includes a frame and a frame front cover. The frame is placed inside the housing. The frame has a receiving groove. The magnetic ring is placed in the receiving groove. The frame front cover covers the receiving groove. The frame front cover is screwed onto the frame by threads. A sealing ring is provided at the screw joint between the frame front cover and the frame. The coil assembly is wound around the outside of the frame.

5. A sealed, waterproof, micro-hydraulic generator according to claim 4, characterized in that: The lower end of the frame front cover is provided with a column, which is sleeved on the lower end of the housing. A sealing ring is provided at the joint, and a ceramic bearing is provided above the sealing ring. The ceramic bearing is sleeved on the rotating shaft.

6. A sealed, waterproof, micro hydroelectric generator according to claim 4, wherein: The upper end face of the frame is provided with a guide post at the center, the front end of the rotating shaft is inserted into the guide post on the frame, and the top of the guide post is provided with ceramic ball bearings.

7. A sealed, waterproof, micro hydroelectric generator according to claim 1, wherein: The top inner side of the housing is provided with no less than two recessed holes or threads.

8. A sealed, waterproof, micro hydroelectric generator according to claim 4, wherein: An electronic voltage regulator is installed inside the top of the casing, above the frame.

9. A sealed, waterproof, micro hydroelectric generator according to claim 4, wherein: The coil assembly includes two sets of bidirectional wound coils.

10. A sealed, waterproof, micro hydroelectric generator according to claim 4, wherein: The space between the frame and the housing is filled with epoxy resin.

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