阅读说明：本技术 一种水流感应器 (Water flow inductor ) 是由 罗建 于 2020-08-04 设计创作，主要内容包括：本发明公开了一种水流感应器,用于检测是否有水流通过,涉及感应器领域。其包括基管(3)、第一磁性件(1)、第二磁性件(2)和位置感应器(4),所述第一磁性件和所述第二磁性件相对地安装在所述基管的内部,所述第一磁性件固定,所述第二磁性件位于所述第一磁性件的近进水口(7)一侧、与所述第一磁性件相隔一定间距且与所述第一磁性件之间形成相斥磁场,所述第二磁性件可沿所述基管的中心线的方向运动,所述第一磁性件和所述第二磁性件各自设有水流通道,所述位置感应器安装在所述基管的侧部靠近所述第一磁性件的位置,以感应所述第二磁性件是否向所述第一磁性件运动。其可检测管体内是否有水流通过,且具有使用寿命长等特点。(The invention discloses a water flow sensor for detecting whether water flow passes through or not, and relates to the field of sensors. The magnetic flow sensor comprises a base pipe (3), a first magnetic part (1), a second magnetic part (2) and a position sensor (4), wherein the first magnetic part and the second magnetic part are oppositely arranged inside the base pipe, the first magnetic part is fixed, the second magnetic part is positioned on one side of the first magnetic part close to a water inlet (7), is separated from the first magnetic part by a certain distance and forms a repulsive magnetic field with the first magnetic part, the second magnetic part can move along the direction of the central line of the base pipe, the first magnetic part and the second magnetic part are respectively provided with a water flow channel, and the position sensor is arranged on the side part of the base pipe close to the first magnetic part to sense whether the second magnetic part moves towards the first magnetic part or not. Whether it has rivers to pass through in the detectable body, and have characteristics such as long service life.)

1. A water flow inductor is characterized by comprising a base pipe (3), a first magnetic part (1), a second magnetic part (2) and a position inductor (4), wherein the first magnetic part (1) and the second magnetic part (2) are oppositely arranged inside the base pipe (3), the first magnetic part (1) is fixed, the second magnetic part (2) is positioned on one side of the first magnetic part (1) close to a water inlet (7), is separated from the first magnetic part (1) by a certain distance and forms a repulsive magnetic field with the first magnetic part (1), the second magnetic part (2) can move along the direction of the central line of the base pipe (3), the first magnetic part (1) and the second magnetic part (2) are respectively provided with a water flow channel, the position inductor (4) is arranged on the side part of the base pipe (3) close to the first magnetic part (1), so as to sense whether the second magnetic part (2) moves towards the first magnetic part (1).

2. The water flow sensor according to claim 1, wherein the second magnetic member (2) is of a cylindrical structure, the lateral surface of the second magnetic member (2) is provided with a plurality of wing portions (22), the wing portions (22) are uniformly distributed on the peripheral wall of the second magnetic member (2), and the space between the wing portions (22) and the lateral surface of the second magnetic member (2) forms a water flow channel (24) of the second magnetic member (2).

3. The water flow sensor according to claim 2, characterised in that said second magnetic element (2) is constituted by a second body (23) and a second magnet (21), said second body (23) being made of plastic.

4. The water flow inductor according to claim 2, characterized in that the sides of the second magnetic element (2) are provided with a plurality of wings (22) near each end.

5. The water flow sensor according to claim 1, wherein the first magnetic member (1) is a circular truncated cone structure, a plurality of through holes (13) are formed in the first magnetic member (1) around the center line of the circular truncated cone, and the through holes (13) form a water flow channel of the first magnetic member (1).

6. Water flow sensor according to claim 5, characterised in that said first magnetic element (1) comprises a first body (12) and a first magnet (11), said first body (12) being made of plastic, said first magnet (11) being provided at the centre of the end of said first body (12).

7. A water flow sensor according to claim 1, wherein the first magnetic member (1) is fixed inside the base pipe (3) by means of a further pipe body (5) connected to the base pipe (3).

8. Water flow sensor according to claim 7, characterised in that the base pipe (3) is provided with a plurality of water inlets (7) and the further pipe body (5) is provided with at least one water outlet (6).

9. The water flow sensor according to claim 7, wherein the end of the other pipe body (5) connected to the base pipe (3) is provided with a clamping portion (51), an abutting portion (52) and a sealing portion (53), the abutting portion (52) is inserted into the base pipe (3) and abuts against the end of the first magnetic member (1), the sealing portion (53) is located at the outer side portion of the abutting portion (52) and is in sealing fit with the inner wall of the base pipe (3), and the clamping portion (51) is clamped with the base pipe (3).

Technical Field

The invention relates to the field of sensors, in particular to a water flow sensor for detecting whether water flows through.

Background

In some applications, some devices need to be controlled to be started by water flow, so that intelligent operation is realized. For example, in a laundry device, when water flows through the device, the ozone generating device is automatically turned on to release ozone into the water flow to sterilize the laundry. For another example, in a bathing apparatus, when a water flow passes, the bath foam discharging device or the shampoo discharging device is automatically turned on to discharge the bath foam or the shampoo into the water flow.

Therefore, it is required to develop a water flow sensor capable of detecting whether water flows therethrough.

Disclosure of Invention

The invention aims to provide a water flow sensor.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a water flow inductor comprises a base pipe, a first magnetic part, a second magnetic part and a position inductor, wherein the first magnetic part and the second magnetic part are oppositely arranged inside the base pipe, the first magnetic part is fixed, the second magnetic part is positioned on one side of the first magnetic part close to a water inlet, is separated from the first magnetic part by a certain distance and forms a repulsive magnetic field with the first magnetic part, the second magnetic part can move along the direction of the central line of the base pipe, the first magnetic part and the second magnetic part are respectively provided with a water flow channel, and the position inductor is arranged on the side part of the base pipe close to the first magnetic part to induce whether the second magnetic part moves towards the first magnetic part or not.

Preferably, the second magnetic member is of a cylindrical structure, the lateral surface of the second magnetic member is provided with a plurality of wing portions, the wing portions are uniformly distributed on the peripheral wall of the second magnetic member, and a space between the wing portions and the lateral surface of the second magnetic member forms a water flow channel of the second magnetic member.

Preferably, the second magnetic member is composed of a second body and a second magnet, and the second body is made of plastic.

Preferably, the side portions of the second magnetic member are each provided with a plurality of wing portions near both ends.

Preferably, the first magnetic part is of a circular truncated cone structure, a plurality of through holes are formed in the center line of the circular truncated cone, and the through holes form a water flow channel of the first magnetic part.

Preferably, the first magnetic member includes a first body made of plastic and a first magnet provided at a center of an end of the first body.

Preferably, the first magnetic member is fixed inside the base pipe by another pipe body connected to the base pipe.

Preferably, the base pipe is provided with a plurality of water inlets, and the other pipe body is provided with at least one water outlet.

Preferably, the end part of the other pipe body connected with the base pipe is provided with a clamping part, an abutting part and a sealing part, the abutting part is inserted into the base pipe and abutted against the end part of the first magnetic part, the sealing part is positioned at the outer side part of the abutting part and is in sealing fit with the inner wall of the base pipe, and the clamping part is clamped with the base pipe.

Compared with the prior art, the invention has at least the following beneficial effects:

whether water flows through the pipe body can be detected, and then an electric signal is output.

No metal parts such as a return spring and the like are arranged, so that the corrosion phenomenon can not occur, and the service life is long.

Through laying a plurality of evenly distributed's alar part for the motion in the parent tube is more smooth and easy when second magnetism spare receives rivers to promote, thereby can improve water flow switch's reliability and increase of service life.

Be equipped with a plurality of water inlets, can realize that a detector detects the rivers of multiple water.

Drawings

FIG. 1 is a perspective view of a water flow sensor according to one embodiment;

FIG. 2 is a side view thereof;

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

FIG. 4 is an exploded view thereof;

FIG. 5 is a schematic structural diagram of a second magnetic member;

FIG. 6 is a schematic structural diagram of the first magnetic member;

FIG. 7 is a schematic view showing the state of the first and second magnetic members in the presence of water flow;

reference numerals:

1. a first magnetic member; 11. a first magnet; 12. a first body; 13. a through hole;

2. a second magnetic member; 21. a second magnet; 22. a wing portion; 23. a second body; 24. a water flow channel;

3. a base pipe; 31. an inductor mounting hole;

4. a position sensor;

5. another tube body; 51. a clamping part; 52. an abutting portion; 53. a sealing part;

6. a water outlet;

7. a water inlet.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Referring to fig. 1 to 7, the water flow sensor includes a base pipe 3, a first magnetic member 1, a second magnetic member 2 and a position sensor 4, the first magnetic member 1 and the second magnetic member 2 are installed oppositely inside the base pipe 3, the first magnetic member 1 is fixed, the second magnetic member 2 is positioned on the side of the first magnetic member 1 close to the water inlet 7, is separated from the first magnetic member 1 by a certain distance, and forms a repulsive magnetic field with the first magnetic member 1, the second magnetic member 2 is movable in the direction of the center line of the base pipe 3, the first magnetic member 1 and the second magnetic member 2 are each provided with a water flow passage, the position sensor 4 is installed in a sensor installation hole 31 formed in a side portion of the base pipe 3, and the position sensor 4 is located near the first magnetic member 1 to sense whether the second magnetic member 2 moves toward the first magnetic member 1.

The position sensor 4 is preferably, but not limited to, a hall switch, a photoelectric switch.

When there is no water flow, as shown in fig. 3, the repulsive magnetic field keeps the second magnetic member 2 at a position close to the water inlet 7 of the first magnetic member 1 and at a distance from the first magnetic member 1, and at this time, the second magnetic member 2 is far away from the position sensor 4.

When water enters the water inlet 7, the water applies pressure to the second magnetic member 2, so that the second magnetic member 2 overcomes the pressure of the repulsive magnetic field and moves leftwards to be close to the position sensor 4, as shown in fig. 7, the output signal of the position sensor 4 changes, and the purpose of detecting the water flow is achieved. Meanwhile, water flows to the water outlet 6 through the water flow channels on the first magnetic part 1 and the second magnetic part 2. The water flow is indicated by the dashed line in fig. 7.

Referring to fig. 5, the second magnetic member 2 is a cylindrical structure, the side surface of the second magnetic member 2 has a plurality of wing portions 22, the wing portions 22 are uniformly distributed on the peripheral wall of the second magnetic member 2, and a space between the wing portions 22 and the side surface of the second magnetic member 2 forms a water flow channel 24 of the second magnetic member 2. In the above structure, the plurality of wing parts 22 can uniformly separate the water flow and pass through the second magnetic part 2 from the periphery, so that the second magnetic part 2 moves more smoothly in the base pipe 3 when pushed by the water flow, and the reliability and the service life of the water flow switch can be improved.

Referring to fig. 3 and 5, the second magnetic member 2 is composed of a second body 23 and a second magnet 21, wherein the second body 23 is made of plastic. The second magnet 21 may be fixed to an end of the second body 23 by insert or injection molding. Because the second magnetic part 2 is made of non-metallic materials, the corrosion phenomenon can not occur after long-term use.

Further, the side portions of the second magnetic member 2 are each provided with a plurality of wing portions 22 near both ends.

Referring to fig. 6, the first magnetic member 1 is a circular truncated cone structure, a plurality of through holes 13 are formed in the first magnetic member 1 around the center line of the circular truncated cone, and the through holes 13 form a water flow channel of the first magnetic member 1. The structure can not only support the magnet at the center of the circular truncated cone, but also be provided with a plurality of through holes 13, thereby ensuring the flow of water flow.

Referring to fig. 3 and 6, the first magnetic member 1 includes a first body 12 and a first magnet 11, the first body 12 is made of plastic, and the first magnet 11 is fixed at the center of the end of the first body 12 by insert molding or injection molding. Because the first magnetic part 1 is made of non-metallic materials, the corrosion phenomenon can not occur after long-term use.

In addition, it is also possible to disperse a magnetic material in a plastic material, by which the first magnetic member 1 and the second magnetic member 2 are directly molded.

Referring to fig. 7, the first magnetic member 1 is fixed inside the base pipe 3 by another pipe body 5 connected to the base pipe 3, and has a feature of convenient assembly.

Further, the end part of the other pipe body 5 connected with the base pipe 3 is provided with a clamping part 51, an abutting part 52 and a sealing part 53, the abutting part 52 is inserted into the base pipe 3 and abutted against the end part of the first magnetic part 1, the sealing part 53 is positioned at the outer side part of the abutting part 52 and is in sealing fit with the inner wall of the base pipe 3, and the clamping part 51 is clamped with the base pipe 3. During the equipment, successively pack into second magnetic part 2, first magnetic part 1 to parent tube 3, then will another body 5's butt end inserts parent tube 3, joint portion 51 with the parent tube 3 joint can, at this moment, the sealing 53 of the outside portion of butt portion 52 forms sealedly with the inner wall cooperation of parent tube 3. Therefore, the structure can quickly finish the assembly and the sealing of the water flow sensor.

With further reference to fig. 1, the base pipe 3 is provided with a plurality of water inlets 7 and said further pipe body 5 is provided with at least one water outlet 6. Therefore, when the water flow sensor is applied to washing equipment or bathing equipment and the like, water with different functions can be respectively input from the plurality of water inlets 7, for example, when the water flow sensor is applied to washing equipment, ozone-containing water, water containing laundry detergent, clean water and the like are input from different water inlets 7, and detection of different water bodies through the same water flow sensor is realized.

The present invention has been described in detail with reference to the specific embodiments, and the detailed description is only for the purpose of helping those skilled in the art understand the present invention, and is not to be construed as limiting the scope of the present invention. Various modifications, equivalent changes, etc. made by those skilled in the art under the spirit of the present invention shall be included in the protection scope of the present invention.