Miniature hydroelectric generator

Abstract

A miniature hydroelectric generator comprises a shell, a miniature generator and an impeller are arranged in the shell, a rotating shaft of the miniature generator extends downwards to be connected with the axis of the impeller, a plurality of water outlets are formed in the peripheral wall of the shell, and the water outlets are arranged around the impeller at intervals. A plurality of first water inlets and second water inlets are formed in the bottom of the base, the first water inlets are distributed around the middle of the base in a circular array mode, the second water inlets are distributed around the first water inlets in a circular array mode, and fan blades are fixed in the first water inlets and the second water inlets; and the first water inlet and the second water inlet form a double-layer turbofan structure at the bottom of the base. The micro generator has the advantages that the water inlet of the double-layer turbofan structure can change water flow from direct current to eddy current, the effect that the water flow drives the impeller to rotate is better, the rotating speed of the impeller is increased, and the power generation effect of the micro generator is better.

Description

Technical Field

[0001] This utility model relates to the technical field of hydroelectric generators, and more particularly to a micro hydroelectric generator. Background Technology

[0002] With industrial development, miniature hydroelectric generators are increasingly widely used. For example, in the bathroom product field, miniature hydroelectric generators are installed inside faucets, generating electricity through the water flow to power other components. Currently, existing miniature hydroelectric generators, such as the Chinese utility model patent CN202420028058.6 (authorization announcement number CN221647052U) entitled "A Miniature Hydroelectric Generator," include a housing. A miniature generator is located in the upper inner part of the housing, and an impeller cover is located below the housing. An impeller is housed inside the impeller cover. The rotating shaft of the miniature generator passes downwards through the housing and connects with the shaft of the impeller. Side plates are provided on both sides between the housing and the impeller cover, with a through-hole formed between the two side plates. A lower water outlet cover is inserted at the lower end of the impeller cover, and several water outlets are arranged in a circular array in the middle of the lower water outlet cover. Water flows in and out inside the miniature hydroelectric generator to drive the impeller to rotate, thereby driving the miniature generator to generate electricity.

[0003] Although the aforementioned micro hydroelectric generator has multiple inlets and outlets for water flow, the water flow within the generator forms a direct current. The impeller rotates only due to the impact of this direct current, resulting in poor impeller rotation and affecting its speed. This, in turn, impacts the generator's power output and hinders its widespread adoption and use. Therefore, further improvements to the micro hydroelectric generator are necessary. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a micro hydroelectric generator with a reasonable structure and better power generation effect in view of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: The micro hydroelectric generator includes a shell, in which a micro generator and an impeller are provided. The rotating shaft of the micro generator extends downward and is connected to the shaft of the impeller. Multiple water outlets are provided on the peripheral wall of the shell, and the water outlets are arranged at intervals around the impeller. The characteristic is that: a base is provided at the lower end of the shell, and multiple first water inlets and second water inlets are provided at the bottom of the base. The multiple first water inlets are arranged in a circular array around the middle of the base, and the multiple second water inlets are arranged in a circular array around the first water inlets. Fan blades are fixed inside the first water inlets and second water inlets, so that the first water inlets and second water inlets form a double-layer vortex fan structure at the bottom of the base.

[0006] Furthermore, a ring-shaped rib is provided on the bottom of the base, which separates the first water inlet and the second water inlet. The ring-shaped rib is provided between the first water inlet and the second water inlet, and the first water inlet and the second water inlet are not connected.

[0007] To improve the impeller's rotation efficiency, the impeller blades are preferably a double-layered structure, consisting of upper and lower blades that are staggered vertically. The double-layered blades provide a larger contact area with the vortex water flow, resulting in better impeller rotation.

[0008] To optimize the spatial layout of the housing, preferably, a partition is provided inside the housing, dividing the space inside the housing into a first space at the top and a second space at the bottom. The micro generator is disposed in the first space, and the impeller is disposed in the second space. The partition has a through hole corresponding to the rotating shaft, and the rotating shaft extends downward into the second space through the through hole to connect with the shaft of the impeller. The partition not only divides the space inside the housing but also prevents water from flowing into the first space and affecting the operation of the micro generator.

[0009] Furthermore, the water outlets are spaced apart on the peripheral wall of the second space. After the vortex water flow drives the impeller to rotate, it flows out from the water outlets around the impeller, a path that facilitates the outflow of water.

[0010] To ensure a sealed installation of the miniature hydroelectric generator, preferably, a threaded groove is formed on the peripheral wall of the housing, located above the water outlet, and a sealing ring is provided at the upper end of the threaded groove. The threaded groove facilitates the installation of the miniature hydroelectric generator inside the shower product, and the sealing ring improves the seal between the miniature hydroelectric generator and the shower product.

[0011] As one embodiment of a micro generator, preferably, the micro generator includes a rotating shaft, a housing, a magnet, and a coil. The rotating shaft and magnet are disposed within the housing, and the coil is wound around the outside of the housing. The coil engages in an induced relationship with the magnet. The magnet is fitted and fixed onto the rotating shaft and can rotate with the shaft. The rotating shaft drives the magnet to rotate via an impeller. Through the induced relationship between the rotating magnet and the fixed coil, the coil generates current, thereby realizing the power generation of the micro hydroelectric generator.

[0012] Compared with the prior art, the advantages of this utility model are as follows: the multiple water inlets of the micro hydroelectric generator are located at the bottom, and the multiple water outlets are located on the side wall. The water flow from the bottom inlet to the side outlet can drive the impeller to rotate to generate electricity. Furthermore, the first and second water inlets of the micro hydroelectric generator are both arranged in a circular array and each has fan blades inside. This forms a double-layer vortex fan structure at the bottom of the base. The water inlet of the double-layer vortex fan structure can change the water flow from direct flow to vortex flow. The vortex flow has its own rotation, which makes the water flow drive the impeller to rotate better, increases the impeller speed, and thus makes the power generation effect of the micro generator better. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0014] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0015] Figure 3 This is a schematic diagram of the outer shell in an embodiment of the present utility model;

[0016] Figure 4 This is a schematic diagram of the base structure in an embodiment of the present utility model;

[0017] Figure 5 This is a cross-sectional view of the base in an embodiment of this utility model;

[0018] Figure 6 This is a schematic diagram of the impeller structure in an embodiment of the present invention;

[0019] Figure 7 This is a schematic diagram of the structure of the micro generator in the embodiment of this utility model;

[0020] Figure 8 This is a cross-sectional view of the micro generator in an embodiment of this utility model. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-8 The image shown is the preferred embodiment of this utility model.

[0023] like Figures 1-5As shown, the micro hydroelectric generator of this embodiment includes a housing 1, a micro generator 2 and an impeller 3 are disposed inside the housing 1, and a partition 12 is provided inside the housing 1. The partition 12 divides the space inside the housing 1 into a first space 13 located above and a second space 14 located below. The micro generator 2 is disposed in the first space 13 and the impeller 3 is disposed in the second space 14. The partition 12 is provided with a through hole 121 corresponding to the rotating shaft 21 of the micro generator 2. The rotating shaft 21 extends downward into the second space 14 through the through hole 121 and is connected to the axis of the impeller 3. The rotation of the impeller 3 can drive the rotating shaft 21 to rotate, thereby enabling the micro generator 2 to generate electricity. Furthermore, the outer casing 1 has multiple water outlets 11 on the peripheral wall of the second space 14. The water outlets 11 are spaced around the impeller 3. The lower end of the outer casing 1 has a base 4. The bottom of the base 4 has multiple first water inlets 41 and second water inlets 42. The multiple first water inlets 41 are arranged in a circular array around the middle of the base 4, and the multiple second water inlets 42 are arranged in a circular array around the first water inlets 41. The bottom of the base 4 has a ring rib 44, which separates the first water inlets 41 and the second water inlets 42. Fan blades 43 are fixed inside the first water inlets 41 and the second water inlets 42, so that the first water inlets 41 and the second water inlets 42 form a double-layer vortex fan structure at the bottom of the base 4. The first water inlets 41 and the second water inlets 42 of the double-layer vortex fan structure can change the water flow from direct flow to vortex flow. The water flow of the vortex flow has its own rotation, which makes the water flow drive the impeller 3 to rotate better, increases the speed of the impeller 3, and thus makes the power generation effect of the micro generator 2 better. In addition, a threaded groove 15 is provided on the peripheral wall of the outer casing 1. The threaded groove 15 is located at the upper end of the water outlet 11. A sealing ring 5 is provided at the upper end of the threaded groove 15. The threaded groove 15 facilitates the installation of the micro hydroelectric generator inside the shower product. The sealing ring 5 can improve the sealing between the micro hydroelectric generator and the shower product.

[0024] like Figure 6 As shown, in this embodiment, the blades of the impeller 3 have a double-layer structure, consisting of an upper blade 31 and a lower blade 32. The upper blade 31 and the lower blade 32 are staggered vertically. The double-layer structure of the blades has a larger contact area with the vortex water flow, resulting in a better rotation effect of the impeller 3.

[0025] like Figure 7 and Figure 8 As shown, the micro generator 2 in this embodiment includes a rotating shaft 21, a housing 22, a magnet 23 and a coil 24. The rotating shaft 21 and the magnet 23 are disposed inside the housing 22. The coil 24 is wound around the outside of the housing 22. The coil 24 and the magnet 23 are inductively engaged. The magnet 23 is sleeved and fixed on the rotating shaft 21 and can rotate together with the rotating shaft 21.

[0026] The workflow of this embodiment is as follows: water flows into the micro hydroelectric generator from the first inlet 41 and the second inlet 42. After passing through the inlet of the double-layer vortex fan structure, the water flow becomes a vortex flow. The vortex flow contacts the upper blade 31 and the lower blade 32 to drive the impeller 3 to rotate. The rotation of the impeller 3 will drive the shaft 21 and the magnet 23 to rotate together. Through the inductive interaction between the rotating magnet 23 and the fixed coil 24, the coil 24 generates current, thereby realizing the power generation of the micro hydroelectric generator.

Claims

1. A micro hydroelectric generator, comprising a housing (1), wherein a micro generator (2) and an impeller (3) are disposed within the housing (1), wherein the shaft (21) of the micro generator (2) extends downward and is connected to the shaft of the impeller (3), and a plurality of water outlets (11) are provided on the peripheral wall of the housing (1), the water outlets (11) being spaced apart around the impeller (3), characterized in that: The lower end of the outer shell (1) is provided with a base (4). The bottom of the base (4) is provided with a plurality of first water inlets (41) and second water inlets (42). The plurality of first water inlets (41) are arranged in a circular array around the middle part of the base (4), and the plurality of second water inlets (42) are arranged in a circular array around the first water inlets (41). Fan blades (43) are fixed inside the first water inlets (41) and the second water inlets (42), so that the first water inlets (41) and the second water inlets (42) form a double-layer turbofan structure at the bottom of the base (4).

2. The micro hydroelectric generator according to claim 1, characterized in that: The base (4) has an annular rib (44) at its bottom, which separates the first water inlet (41) and the second water inlet (42).

3. The micro hydroelectric generator according to claim 1, characterized in that: The impeller (3) has a double-layer structure, consisting of an upper blade (31) and a lower blade (32), which are staggered vertically.

4. The micro hydroelectric generator according to claim 1, characterized in that: The outer casing (1) is provided with a partition (12), which divides the space inside the outer casing (1) into a first space (13) located above and a second space (14) located below. The micro generator (2) is located in the first space (13), and the impeller (3) is located in the second space (14). The partition (12) is provided with a through hole (121) corresponding to the rotating shaft (21). The rotating shaft (21) extends downward into the second space (14) through the through hole (121) and is connected to the axis of the impeller (3).

5. The micro hydroelectric generator according to claim 4, characterized in that: The water outlets (11) are spaced apart on the periphery of the second space (14).

6. The micro hydroelectric generator according to claim 1, characterized in that: The outer casing (1) has a threaded groove (15) on its peripheral wall. The threaded groove (15) is located at the upper end of the water outlet (11), and a sealing ring (5) is provided at the upper end of the threaded groove (15).

7. The micro hydroelectric generator according to any one of claims 1 to 6, characterized in that: The micro generator (2) includes a rotating shaft (21), a housing (22), a magnet (23), and a coil (24). The rotating shaft (21) and the magnet (23) are disposed inside the housing (22). The coil (24) is wound around the outside of the housing (22). The coil (24) and the magnet (23) are inductively coupled. The magnet (23) is sleeved and fixed on the rotating shaft (21) and can rotate with the rotating shaft (21).

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