CN216927107U - Water flow detection device - Google Patents
Water flow detection device Download PDFInfo
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- CN216927107U CN216927107U CN202122761995.1U CN202122761995U CN216927107U CN 216927107 U CN216927107 U CN 216927107U CN 202122761995 U CN202122761995 U CN 202122761995U CN 216927107 U CN216927107 U CN 216927107U
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- positioning
- light
- water flow
- liquid inlet
- inlet channel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The utility model discloses a water flow detection device, which comprises a shell, wherein the shell is made of a light-transmitting material, the shell is provided with a containing cavity and a liquid inlet channel, the containing cavity is separated from the liquid inlet channel, and a reflecting surface is arranged between the containing cavity and the liquid inlet channel; a detection element disposed within the containment chamber; the detection element comprises a light emitter for emitting incident light to the reflecting surface and a light receiver for generating signals after receiving the light; the incident angle of the light emitter is larger than the critical angle; the light receiver is positioned on the reflected light ray corresponding to the incident light ray; the utility model innovatively utilizes the total reflection principle to detect the liquid in the liquid inlet channel, the detection result is not influenced by phenomena of water flow disorder, air bubbles and the like, and the detection accuracy is high, stable and reliable.
Description
Technical Field
The utility model relates to the technical field of water flow detection, in particular to a water flow detection device.
Background
In daily life and production, some electrical appliances (such as instant electric water heaters, water dispensers and other electrical appliances) need to detect water flow in a water pipe to obtain corresponding signals so as to perform corresponding operations. Currently, optical sensors are commonly used to detect water flow.
However, the current optical sensor detects the water flow in the water pipe by using a light refraction mode, for example, the chinese patent application No. cn202122471529.x, the light emitter of the patent emits light to the transparent water pipe located in the water pipe accommodating channel, by using the characteristic that light has different refractive indexes when passing through different media, whether the light receiver receives light to judge whether there is water flow flowing through the transparent water pipe, and once there is water flow disorder in the water pipe, the phenomenon such as bubbles will affect the refracted light, resulting in unstable detection result, thereby resulting in low detection precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a water flow detection device, and aims to solve the technical problem that the detection result of the water flow detection device in the prior art is unstable.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
the utility model provides a water flow detection device, comprising: the liquid inlet device comprises a shell, a liquid inlet channel and a liquid outlet channel, wherein the shell is made of a light-transmitting material, the shell is provided with a containing cavity and the liquid inlet channel, the containing cavity is separated from the liquid inlet channel, and a reflecting surface is arranged between the containing cavity and the liquid inlet channel; a detection element disposed within the containment chamber; the detection element comprises a light emitter for emitting incident light to the reflecting surface and a light receiver for generating signals after receiving the light; the incident angle of the light emitter is larger than a critical angle; the light receiver is positioned on the reflected light ray corresponding to the incident light ray.
Compared with the prior art, the liquid inlet channel detection device disclosed by the utility model innovatively utilizes the total reflection principle to detect the liquid in the liquid inlet channel, the detection result is not influenced by phenomena such as water flow disorder and air bubbles, and the detection accuracy is high, stable and reliable.
In a preferred embodiment, the housing further has a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both communicated with the liquid inlet channel.
In a preferred embodiment, the housing is further provided with an opening, and the opening is communicated with the accommodating cavity.
In a preferred embodiment, the detecting element further includes a circuit board, and the circuit board is provided with the light emitter and the light receiver.
In a preferred embodiment, the detection element further comprises a positioning part, the positioning part is connected with the circuit board, and a positioning part is arranged on the positioning part; the containing cavity is internally provided with a positioning groove, and the positioning groove is matched with the positioning part in an installation mode, so that incident light of the light emitter can be reflected to the light receiver through the reflecting surface.
In a preferred embodiment, a mounting surface is arranged on one side of the circuit board facing the positioning piece, and the light emitter and the light receiver are arranged on the mounting surface;
one side of the positioning piece, which faces the circuit board, is provided with a positioning surface, and the positioning part is arranged on the positioning surface.
In a preferred embodiment, the positioning portion includes a first positioning portion, a second positioning portion, and a third positioning portion, the second positioning portion is located below the optical transmitter, the third positioning portion is located below the optical receiver, and the first positioning portion is located between the optical transmitter and the optical receiver;
the positioning grooves include a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove is located below the first positioning portion, the second positioning groove is located below the second positioning portion, and the third positioning groove is located below the third positioning portion.
In a preferred embodiment, the slotting direction of the first positioning groove is upward; and a shielding plate extending downwards is arranged below the first positioning part.
In a preferred embodiment, the shielding plate is made of a light-impermeable material.
For a better understanding and practice, the utility model is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a water flow detecting device;
FIG. 2 is a schematic view of a water flow detection device;
FIG. 3 is a schematic view of a circuit board;
fig. 4 is a schematic view of a positioning member.
Description of the reference numerals:
100-shell, 110-holding chamber, 111-first positioning groove, 112-second positioning groove, 113-third positioning groove, 120-liquid inlet channel, 121-reflecting surface, 130-liquid inlet, 140-liquid outlet 150-opening, 200-detection element, 210-light emitter, 220-light receiver, 230-circuit board, 240-positioning piece, 241-first positioning part, 2411-baffle plate, 242-second positioning part, 243-third positioning part.
Detailed Description
In order to better illustrate the utility model, the utility model is described in further detail below with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims. In the description of the present application, it is to be understood that the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The utility model provides a water flow detection device which can be installed and butted with a pipeline or other water inlet devices (such as a water dispenser and the like), whether water flow flows through a liquid inlet channel is judged by judging whether a light receiver receives the light emitted by a light emitter or not by utilizing the characteristic of total reflection of the light, the detection result is not influenced by phenomena of water flow disorder, bubbles and the like, and the detection accuracy is high, stable and reliable.
Specifically, as shown in fig. 1 to 4, the water flow detecting device includes: the liquid inlet device comprises a shell 100 made of a light-transmitting material, wherein the shell 100 contains a cavity 110 and a liquid inlet channel 120, the cavity 110 and the liquid inlet channel 120 are arranged in a separated manner, and a reflecting surface 121 is arranged between the cavity 110 and the liquid inlet channel 120; a detection element 200 disposed within the accommodation chamber 110; the detecting element 200 includes a light emitter 210 for emitting incident light toward the reflecting surface 121 and a light receiver 220 for generating a signal upon receiving the light; the incident angle of the light emitter 210 is greater than a critical angle; the light receiver 220 is located on the reflected light corresponding to the incident light.
The working principle of the water flow detection device is that when there is liquid (for example, water) in the liquid inlet channel 120, the refractive index of the housing 100 is the same as that of the liquid (i.e. light travels along a straight line when passing through the housing 100 and through the liquid), the incident light emitted by the light emitter 210 is directly incident into the liquid, and the light receiver 220 cannot receive the light and does not generate a signal; when there is no liquid in the liquid inlet channel 120, the refractive index of the housing 100 is higher than that of air, and the incident angle of the light emitter 210 is larger than the critical angle, when an incident light ray is incident on the reflection surface 121 (the reflection surface 121 here refers to the boundary between two media, i.e. the cavity wall of the liquid inlet channel 120), so that the refracted light ray disappears, the incident light ray will be reflected to the light receiver 220, and the light receiver 220 generates a signal after receiving the light ray.
Compared with the prior art, the liquid inlet channel 120 is innovatively detected by using the total reflection principle, the detection result is not influenced by phenomena of water flow disorder, air bubbles and the like, and the detection method is high in detection accuracy, stable and reliable.
It should be noted that the signal generated by the optical receiver 220 after receiving the light may be a high level signal or a low level signal, which needs to be determined according to the actual circuit, and the present invention is not limited thereto.
In one embodiment, the housing 100 further has a liquid inlet 130 and a liquid outlet 140, and the liquid inlet 130 and the liquid outlet 140 are both connected to the liquid inlet channel 120; in the present invention, the liquid inlet 130 and the liquid outlet 140 are connected with a pipeline or other devices, so that the liquid is input from the liquid inlet 130 to the liquid inlet channel 120, and the liquid is discharged through the liquid outlet 140.
In one embodiment, the housing 100 is further provided with an opening 150, and the opening 150 is communicated with the accommodating cavity 110; according to the utility model, the detection element 200 is placed into the accommodating cavity 110 through the opening 150, so that the production efficiency of the water flow detection device is improved.
Further, the sensing element 200 may be fixed in the receiving cavity 110 by an adhesive.
In one embodiment, the detecting element 200 further includes a circuit board 230, wherein the circuit board 230 is provided with the optical transmitter 210 and the optical receiver 220; according to the utility model, the optical transmitter 210 and the optical receiver 220 are uniformly arranged on the same circuit board 230, so that the precision of an optical path is improved, and the installation steps are simplified.
In one embodiment, the detecting element 200 further includes a positioning element 240, the positioning element 240 is connected to the circuit board 230, and a positioning portion is disposed on the positioning element 240; a positioning groove is arranged in the accommodating cavity 110, and the positioning groove is installed and matched with the positioning part, so that the incident light of the light emitter 210 can be reflected to the light receiver 220 through the reflection surface 121. According to the utility model, the positioning of the light emitter 210 and the light receiver 220 is realized through the positioning matching of the positioning groove and the positioning part, and the production precision is improved.
Further, a mounting surface is disposed on a side of the circuit board 230 facing the positioning element 240, and the light emitter 210 and the light receiver 220 are disposed on the mounting surface; one side of the positioning element 240 facing the circuit board 230 is provided with a positioning surface, and the positioning part is arranged on the positioning surface; according to the utility model, the volume of the detection element 200 can be effectively reduced through the design.
Further, the positioning portions include a first positioning portion 241, a second positioning portion 242, and a third positioning portion 243, the second positioning portion 242 is located below the optical transmitter 210, the third positioning portion 243 is located below the optical receiver 220, and the first positioning portion 241 is located between the optical transmitter 210 and the optical receiver 220;
the positioning grooves include a first positioning groove 111, a second positioning groove 112 and a third positioning groove 113, the first positioning groove 111 is located below the first positioning portion 241, the second positioning groove 112 is located below the second positioning portion 242, and the third positioning groove 113 is located below the third positioning portion 243. In the present invention, the first positioning groove 111 is in positioning fit with the first positioning portion 241, the second positioning groove 112 is in positioning fit with the second positioning portion 242, and the third positioning groove 113 is in positioning fit with the third positioning portion 243, so as to position the detection element 200.
In one embodiment, the slotting direction of the first positioning slot 111 is upward; a shielding plate 2411 extending downward is arranged below the first positioning portion 241; in the utility model, the light scattered by the light emitter 210 is blocked by the shielding plate 2411, so that the detection precision of the light receiver 220 is effectively improved.
Further, the shielding plate 2411 is made of an opaque material.
In an embodiment, a draft angle is formed at a position of the liquid inlet channel 120 on the reflection surface 121, so that the reflection surface 121 is prevented from being dragged during demolding, and the detection accuracy is improved.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (9)
1. A water flow detecting device, comprising:
the liquid inlet device comprises a shell, a liquid inlet channel and a liquid outlet channel, wherein the shell is made of a light-transmitting material and comprises an accommodating cavity and the liquid inlet channel, the accommodating cavity and the liquid inlet channel are arranged in a separated mode, and a reflecting surface is arranged between the accommodating cavity and the liquid inlet channel;
a detection element disposed within the containment chamber; the detection element comprises a light emitter for emitting incident light to the reflecting surface and a light receiver for generating signals after receiving the light;
the incident angle of the light emitter is larger than the critical angle; the light receiver is positioned on the reflected light ray corresponding to the incident light ray.
2. The water flow detecting device according to claim 1, wherein:
the casing still is equipped with inlet and liquid outlet, the inlet reaches the liquid outlet all with inlet channel is linked together.
3. The water flow detecting device according to claim 1, wherein:
the shell is also provided with an opening, and the opening is communicated with the accommodating cavity.
4. The water flow detecting device according to claim 1, wherein:
the detection element further comprises a circuit board, and the light emitter and the light receiver are arranged on the circuit board.
5. The water flow detecting device according to claim 4, wherein:
the detection element further comprises a positioning piece, the positioning piece is connected with the circuit board, and a positioning part is arranged on the positioning piece;
the containing cavity is internally provided with a positioning groove, and the positioning groove is matched with the positioning part in an installation mode, so that incident light of the light emitter can be reflected to the light receiver through the reflecting surface.
6. The water flow detecting device according to claim 5, wherein:
a mounting surface is arranged on one side of the circuit board facing the positioning piece, and the light emitter and the light receiver are arranged on the mounting surface;
one side of the positioning piece, which faces the circuit board, is provided with a positioning surface, and the positioning part is arranged on the positioning surface.
7. The water flow detecting device according to claim 5 or 6, wherein:
the positioning part comprises a first positioning part, a second positioning part and a third positioning part, the second positioning part is positioned below the optical transmitter, the third positioning part is positioned below the optical receiver, and the first positioning part is positioned between the optical transmitter and the optical receiver;
the positioning grooves comprise a first positioning groove, a second positioning groove and a third positioning groove, the first positioning groove is located below the first positioning portion, the second positioning groove is located below the second positioning portion, and the third positioning groove is located below the third positioning portion.
8. The water flow detecting device according to claim 7, wherein:
the slotting direction of the first positioning groove is upward; and a shielding plate extending downwards is arranged below the first positioning part.
9. The water flow detecting device according to claim 8, wherein:
the shielding plate is made of opaque materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122761995.1U CN216927107U (en) | 2021-11-11 | 2021-11-11 | Water flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122761995.1U CN216927107U (en) | 2021-11-11 | 2021-11-11 | Water flow detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216927107U true CN216927107U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122761995.1U Active CN216927107U (en) | 2021-11-11 | 2021-11-11 | Water flow detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216927107U (en) |
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2021
- 2021-11-11 CN CN202122761995.1U patent/CN216927107U/en active Active
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