阅读说明：本技术 一种水流传感器 (Water flow sensor ) 是由 朱景锋 金鸥翔 鲍鹏飞 于 2020-08-01 设计创作，主要内容包括：一种水流传感器,壳体内具有与水流进口和出口贯通的水流通道,该水流通道的前、后端分别设有前支撑和后支撑,前、后支撑上架设有叶轮,叶轮中心轴的轴向与所述水流通道的轴向平行,所述前支撑具有支撑套及其外壁所连的周向分布的支撑板,该支撑板之间形成过水通路,所述叶轮中心轴上连有翼板,该翼板表面与所述过水通路流出水流间具有夹角,所述壳体内设有光耦,所述翼板和光耦的光通路的设置在于：所述翼板外缘上一点随所述叶轮转动形成轨迹圆,该轨迹圆具有割线,该割线相对叶轮转动一状态与所述翼板不相交,所述光通路与该割线重合。本发明用于测量水流量,具有精度高,耐压高,体积小,构造简单,成本柢,使用寿命长等特点。(The utility model provides a rivers sensor, has the rivers passageway that link up with rivers import and export in the casing, and support and back support before this rivers passageway's preceding, rear end were equipped with respectively, and preceding, back support is put on the shelf and is equipped with the impeller, the axial of impeller center pin with the axial direction of rivers passageway is parallel, preceding support has the backup pad that supports the circumference distribution that cover and outer wall link, forms water passing channel between this backup pad, even there is the pterygoid lamina on the impeller center pin, this pterygoid lamina surface with water passing channel outflow rivers within a definite time have the contained angle, be equipped with the opto-coupler in the casing, the setting of the light passageway of pterygoid lamina and opto-coupler: a point on the outer edge of the wing plate rotates along with the impeller to form a track circle, the track circle is provided with a secant, the secant does not intersect with the wing plate in a state of rotating relative to the impeller, and the light path is superposed with the secant. The present invention is used for measuring water flow and has the features of high precision, high pressure resistance, small volume, simple structure, low cost, long service life, etc.)

1. The utility model provides a rivers sensor, has the rivers passageway that link up with rivers import (1) and rivers export (5) in casing (6), characterized by the preceding, the rear end of rivers passageway are equipped with preceding support and back support (4) respectively, and this preceding, back support are put on the shelf and are equipped with the impeller, the axial of the center pin of this impeller with the axial direction of rivers passageway is parallel, preceding support has the backup pad that supports the circumference distribution that cover (201) and outer wall link to each other, forms water passageway (202) between this backup pad, even there is the pterygoid lamina on the impeller center pin, this pterygoid lamina surface with water passageway outflow water interval has the contained angle, be equipped with the opto-coupler of constituteing by emitting diode (10) and receiving diode (11) in the casing, the setting of the light passageway of pterygoid lamina and opto-coupler lies: one point on the outer edge of the wing plate rotates along with the impeller to form a track circle (14), the track circle is provided with a secant (15), the secant does not intersect with the wing plate in a state of rotating relative to the impeller, and the light path (16) is superposed with the secant.

2. The water flow sensor according to claim 1, wherein the surface of the wing plate forms an angle with the water flow flowing out from the water passage, and the wing plate of the impeller is a flat plate-shaped wing plate (301A) extending axially, outwards and radially, and the support plate of the front support is a spirally twisted water flow deflection type support plate (203A).

3. The water flow sensor according to claim 1, wherein the surface of the wing plate forms an angle with the water flowing out of the water passage, and the wing plate is a radially outwardly extended and axially extended spiral wing plate (301B), and the support plate of the front support is a radially outwardly extended and radially extended flat plate-shaped support plate (203B).

4. The water flow sensor according to claim 1, wherein the surface of the wing plate forms an angle with the water flow flowing out from the water passage, and the angle is a radially outward extending and axially extending spirally twisted water flow deflection type wing plate (301C), the front support plate is an axially outward extending and radially extending flat plate type support plate (203B), and a light shielding plate a (12) is connected to the central shaft behind the water flow deflection type wing plate.

5. The water flow sensor according to claim 2, wherein a light shielding plate B (13) is attached to the central shaft in front of the flat wing.

6. Water flow sensor according to any one of claims 1 to 5, characterised in that a substrate (8) for the measurement circuit is provided on one side of the housing.

7. Water flow sensor according to claim 6, wherein the housing is provided with a protective cover (7) in correspondence with the base plate.

Technical Field

The present invention relates to a sensor, and more particularly to a sensor capable of measuring water flow.

Background

The water flow sensor is an instrument for detecting water flow by sensing water flow and outputting signals such as current, voltage and the like, and can be used for management and flow calculation in the aspect of water control.

Along with the technical progress and the improvement of the living demands of people, the intelligent closestool is gradually popularized and popularized. The product often has a relatively long transition period in the popularization stage, and the product, parts and accessories thereof are continuously improved, innovated and updated, and the water flow sensor is one of the products. In addition, the water flow sensor is also applied to other various occasions of water flow detection.

Disclosure of Invention

The invention provides a water flow sensor, which aims to solve the problems that a water flow sensor in the prior art is high in measurement accuracy but low in pressure bearing capacity or high in pressure bearing capacity but low in measurement accuracy.

In order to solve the problems, the invention adopts the technical scheme that a water flow channel communicated with a water flow inlet and a water flow outlet is arranged in a shell, and the water flow channel is characterized in that a front support and a rear support are respectively arranged at the front end and the rear end of the water flow channel, impellers are erected on the front support and the rear support, the axial direction of a central shaft of each impeller is parallel to the axial direction of the water flow channel, the front support is provided with support sleeves and support plates which are circumferentially distributed and connected with the outer wall of the support sleeves, a water passing channel is formed between the support plates, a wing plate is connected to the central shaft of each impeller, an included angle is formed between the surface of the wing plate and water flowing out of the water passing channel, an optical coupler consisting of a light emitting diode and a receiving diode is arranged: a point on the outer edge of the wing plate rotates along with the impeller to form a track circle, the track circle is provided with a secant, the secant does not intersect with the wing plate in a state of rotating relative to the impeller, and the light path is superposed with the secant.

The surface of the wing plate and the water flowing out from the water passing channel form an included angle, the wing plate of the impeller can be a flat-plate-type wing plate extending outwards in the axial direction and in the radial direction, and the support plate of the front support is a spirally twisted water flow deflection type support plate.

The surface of the wing plate and the water flowing out of the water passing channel form an included angle, the wing plate can be a spiral wing plate extending radially and outwards in the axial direction, and the supporting plate of the front support is a flat plate type supporting plate extending axially and outwards in the radial direction.

The surface of the wing plate and the water flowing out of the water passing channel form an included angle, the wing plate can be a spirally twisted water flow deflection type wing plate extending radially outwards and axially, the supporting plate of the front support is a flat plate type supporting plate extending axially and radially outwards, and a light shielding plate A is connected to the central shaft behind the water flow deflection type wing plate.

A shield plate B may be attached to the center shaft in front of the flat-plate wing plate.

A substrate on which the measuring circuit is provided is preferably provided on one side of the housing.

Preferably, a protective cover is disposed at a position corresponding to the substrate.

The axial local section of the spiral wing plate and the spirally twisted water flow deflection wing plate have similar structures, and the two wing plates have the characteristics that an included angle is formed between the surface of each wing plate and the axial parallel water flow, and the surface is subjected to component force perpendicular to the axial direction under the impact of the axial parallel water flow, and the component force drives the impeller to rotate. Correspondingly, the spirally twisted water flow deflection type support plate of the front support deflects the water flow flowing out of the water passage relative to the water flow flowing in, an included angle is formed between the water flow flowing out and the flat-plate-type wing plate, and under the impact of the water flow, the surface of the flat-plate-type wing plate is subjected to a component force perpendicular to the axial direction, and the component force drives the impeller to rotate.

The water flow deflection of the spirally twisted water flow deflection type wing plate and the spirally twisted water flow deflection type support plate is the result of the spiral twist, namely the spiral twist causes the water flow deflection, and the spiral shape is the spiral shape. In the case of the present invention, the spirally twisted water flow deflection type wing plate receives a component force perpendicular to the axial direction, which rotates the impeller, under the impact of the axially parallel water flow; in fact, when the axially parallel water flow impacts the spirally twisted water flow deflection type wing plate, the water flow is deflected to a certain degree, and if the impeller is fixed, the water flow is deflected to a large degree. When water passes through the water passage between the support plates, the outflow water deflects to form an included angle with the flat wing plates parallel to the axial direction, and the wing plates receive a component force perpendicular to the axial direction, so that the impeller rotates.

With the present invention, a secant of the locus circle, which does not intersect with the wing plate, exists at a certain time period, even if temporarily, when the impeller rotates, and the optical path of the optical coupler coinciding with the secant is conducted and blocked as the impeller continues to rotate. The number of the wing plates of the impeller suitable for the condition can be two, three or four in a circumferential range, the wing plates are preferably evenly distributed in the circumferential direction, and the condition that the light passing condition is limited by more than four wing plates becomes unsuitable. From experience, two or three wings are relatively suitable. The vanes are in particular the flat-plate vanes, and for the spiral vanes, the helically twisted flow-deflecting vanes, also the number of vane segments is understood in terms of their cross-section relative to the trajectory circle.

The water flow deflection means that the water flow deflects axially, and an included angle is formed between the deflected water flow and the axial direction.

The front support is divided into two types, namely a front support A and a front support B. The support plates of the front support A are spirally twisted water flow deflection type support plates, and water flows out of the water passing passages among the support plates are axially deflected. The support plates of the front support B are flat plate type support plates extending outwards in the axial direction and in the radial direction, and the water flowing out of the water passing channel between the support plates is parallel water flow in the axial direction.

The invention is further described with reference to the following figures and detailed description.

Drawings

FIG. 1 is an external view of the present invention;

FIG. 2 is a cross-sectional view A-A of the embodiment of FIG. 1;

FIG. 3 is a cross-sectional view B-B of FIG. 2;

FIG. 4 is a cross-sectional view C-C of the embodiment of FIG. 1;

FIG. 5 is a view corresponding to FIG. 4, with the impeller rotated through an angle;

FIG. 6 is a schematic structural view of an impeller A in the present invention;

FIG. 7 is a schematic view of the front support A of the present invention;

FIG. 8 is a plan view of the front support A of FIG. 7;

FIG. 9 is a schematic structural view of an impeller B;

FIG. 10 is a perspective view of impeller B of FIG. 9;

FIG. 11 is a schematic structural view of the front support B;

FIG. 12 is a schematic structural view of an impeller C;

FIG. 13 is a schematic structural view of an impeller D;

FIG. 14 is a schematic view showing the angle between the flat plate-type wing plate of the impeller A and the water flow from the front support A;

FIG. 15 is a schematic view of the helical blades of impeller B angled with respect to the outflow from front support B;

FIG. 16 is a schematic diagram of a structure and a state of a light path of a wing plate of an impeller and an optical coupler according to the present invention, wherein the wing plate is not shielded from light and the optical coupler is conducted;

FIG. 17 is a schematic view of the optical coupling blocking of the impeller rotated 90 degrees from the state of FIG. 16;

fig. 18 is a schematic diagram of the optical coupling blocking of the impeller rotating 45 ° clockwise from the state of fig. 16;

FIG. 19 is a schematic view of another configuration and state of the light path of the vane and the optocoupler of the impeller of the present invention;

fig. 20 is a schematic view showing still another structure and state of the optical path of the vane and the optical coupler of the impeller according to the present invention.

The figures are labeled with the corresponding parts: the water flow type solar water heater comprises a water flow inlet 1, a front support A of 2A, a support sleeve 201, a water flow passage 202, a water flow deflection type support plate of 203A, a front support B of 2B, a flat plate type support plate of 203B, an impeller A of 3A, a flat plate type wing plate of 301A, an impeller B of 3B, a spiral wing plate of 301B, an impeller C of 3C, a water flow deflection type wing plate of 301C, an impeller D of 3D, a rear support of 4, a water flow outlet 5, a shell 6, a protective cover 7, a base plate 8, a fixed block 9, a light-emitting diode 10, a receiving diode 11, a light shielding plate A of 12, a light shielding plate B of 13, a track circle of 14, a sec.

Detailed Description