CN215491959U

CN215491959U - Liquid level detection device of foot tub

Info

Publication number: CN215491959U
Application number: CN202121705006.0U
Authority: CN
Inventors: 许晓超
Original assignee: Di Tu Health Technology Shanghai Co ltd
Current assignee: Di Tu Health Technology Shanghai Co ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-01-11
Anticipated expiration: 2031-07-26

Abstract

The utility model provides a liquid level detection device of a foot tub, which comprises the foot tub and a liquid level detector, wherein the foot tub is provided with a water container, the water container is a carrier of water during foot bath and is of a tub-shaped structure as a whole, the water container is provided with a container wall, and the water contacts the inner side of the container wall; the liquid level detector is arranged on the outer side of the container wall, and the container wall separates the water body from the liquid level detector; the liquid level detector is provided with a capacitance sensor and a frequency-voltage converter, and the liquid level detector carries out non-contact water level detection on the water body in the water container through the capacitance sensor; the capacitance sensor is in non-contact with the water body and is not influenced by water quality, impurities and water scale contained in the foot tub, so that the stability is high, the failure rate is low, and the maintenance and after-sale cost can be reduced; the magnetic field interference resistance can work normally under the environments of high temperature, high pressure, high impact and the like, has strong magnetic field interference resistance, and can be better suitable for various severe environments.

Description

Liquid level detection device of foot tub

Technical Field

The utility model relates to the technical field of foot baths, in particular to a liquid level detection device of a foot bath tub.

Background

Along with the development of electronic control and detection technology, the foot tub industry also relates to the application of water level height detection technology, for example, the floating ball type liquid level detection technology used at present consists of a floating ball, an inserted link, a magnet, a reed switch and the like, and is installed at the middle upper part of the foot tub.

According to the technical principle, when the device is used, most area of the detection piece is required to be in contact with liquid for detection, the detection precision is easily influenced by buoyancy, the buoyancy can be influenced by the viscosity of the liquid, the dirty condition and impurities in the liquid, and if the water body is used for a long time, scale is formed in a water channel of the foot tub, and the sensitivity of the floating ball sensor is influenced. Therefore, the device can not be used in sticky liquid with impurities, otherwise the floating ball can be stuck and can not act to cause the detection misalignment. In order to overcome the defects and shortcomings of the floating ball type liquid level detection device, the utility model provides a non-contact capacitance liquid level sensor for the foot bath industry, which can effectively overcome the defects of the prior art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a liquid level detection device for a foot tub.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a liquid level detection device of a foot tub comprises the foot tub and a liquid level detector, wherein the foot tub is provided with a water container, the water container is a carrier of water during foot bath, the water container is provided with a container wall, and the water contacts the inner side of the container wall; the liquid level detector is arranged on the outer side of the container wall, and the container wall separates the water body from the liquid level detector; the liquid level detector carries out non-contact water level detection on the water body.

In a preferred technical scheme, the liquid level detector is provided with a capacitance sensor and a frequency-voltage converter.

In a preferred technical scheme, the capacitance sensor is vertically provided with a detection part and a plurality of sensing parts, the detection part is connected with the sensing parts, and different sensing parts jointly detect the change value of the water level and calculate the change capacitance value through the detection part; and a space is arranged between the sensing parts.

In the preferred technical scheme, the frequency-voltage converter is electrically connected with the capacitance sensor, the capacitance sensor detects the change of capacitance values through the water level change in the water container, and the capacitance values are converted into measurable electrical parameters through the frequency-voltage converter.

In the preferred technical scheme, the liquid level detector is connected with a display panel, connecting wires are connected between the display panel and the capacitive sensor and between the display panel and the frequency-voltage converter, and signals converted by the frequency-voltage converter are displayed through the display panel.

In a preferred technical scheme, the display panel displays signals obtained by measuring the water level by the capacitive sensor and the voltage converter, and the display mode is digital display or lamp display.

According to the technical scheme, compared with the prior art, the utility model has the following beneficial technical effects:

1. according to the detection principle, the capacitance sensor is in non-contact with the water body and is not influenced by water quality, impurities and water scale contained in the foot tub, so that the stability is high, the failure rate is low, and the maintenance and after-sale cost can be reduced.

2. The magnetic field interference resistance can work normally under the environments of high temperature, high pressure, high impact and the like, has strong magnetic field interference resistance, and can be better suitable for various severe environments.

3. Simple structure, strong adaptability, convenient installation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a liquid level detection device of a foot tub.

FIG. 2 is a schematic diagram of a detection principle of a liquid level detection device for a foot tub.

Reference numerals: 100. a water container; 110. a container wall; 200. a liquid level detector; 210. a capacitive sensor; 220. a frequency-to-voltage converter; 211. a sensing element; 212. a detection member; 230. a display panel; 240. A connecting wire; 300. a body of water.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the present application, it is to be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1 and 2, the liquid level detection device for a foot tub comprises a foot tub and a liquid level detector 200, wherein the foot tub is provided with a water container 100, and the water container 100 is a carrier of water body during foot bath and is of a tub-shaped structure as a whole; generally, the foot tub is provided with a housing in which the water container 100 is disposed, and a portion of the foot tub is provided with an integrated housing which also serves as the water container 100; the top of the water container 100 is provided with an opening for injecting the water 300 or extending feet into the water container 100 for foot bath, the water container 100 is provided with a container wall 110, the water 300 contacts the inner side of the container wall 110, the container wall 110 is of a horizontal and vertical structure, and the vertical structure is beneficial to more accurately detecting the height of the water level by the liquid level detector 200, but the structure is not limited to the embodiment, and the detection of the water level can be realized by correspondingly adjusting the fixing structure of the liquid level detector 200 by the container wall 110 with an inclined plane or arc-shaped structure; the liquid level detector 200 is arranged at the outer side of the container wall 110, the water body 300 and the liquid level detector 200 are respectively arranged at the inner side and the outer side of the container wall 110, namely, the container wall 110 separates the water body 300 from the liquid level detector 200, and the two cannot contact with each other; the liquid level detector 200 is provided with a capacitance sensor 210 and a frequency-voltage converter 220, wherein the capacitance sensor 210 is matched with the frequency-voltage converter 220 to convert the water level height into a pulse signal after non-contact capacitance detection; the non-contact liquid level detector 200 is not affected by water in the foot tub, and has the advantages of high stability, low failure rate, long service life and the like.

Furthermore, the capacitance sensor 210 is vertically provided with a detecting element 212 and a plurality of sensing elements 211, the detecting element 212 is connected with the sensing elements 211, and different sensing elements 211 jointly detect the change value of the water level and calculate the change capacitance value through the detecting element; the number of the sensing members 211 in this embodiment is two, but the number is not limited to this embodiment, and the number of the sensing members 211 can be determined according to the height of the actual container wall 110 and the height range of the water level to be measured; the sensing piece 211 is attached to the outer side of the container wall 110, if the sensing piece 211 vertically occupies the highest water level of the container wall 110 in equal proportion, the water level measurement range is the largest, a space is arranged between every two sensing pieces 211, the detection piece 212 records the capacitance value of each sensing piece 211 when the water container 100 is empty, when the water container 100 is filled with water and reaches a certain height of water level, the water body 300 influences the sensing pieces 211, so that the capacitance value changes, the capacitance value of the sensing piece 211 located at the lowest position during water filling firstly changes, gradually rises along with the water level in the water container 100, the capacitance value of the sensing piece 212 reaching the corresponding height also changes, the detection piece 212 senses the capacitance value change condition of each sensing piece 211, and the water level height in the water container 100 can be detected in real time by judging whether the capacitance value of the sensing piece 211 changes.

Furthermore, the frequency-voltage converter 220 is electrically connected to a capacitance sensor, the capacitance sensor 210 detects a change in capacitance value through a change in water level in the water container 100, and the capacitance value is converted into a measurable electrical parameter through the frequency-voltage converter; after the frequency-voltage converter 220 converts the voltage quantity into a pulse signal, the anti-interference capability of the signal can be enhanced, and the signal conversion output with accurate capacitance value can be realized; the liquid level detector 200 is connected with a display panel 230, a connecting line 240 is connected between the display panel 230 and the capacitance sensor 210 and between the display panel 230 and the frequency-voltage converter 220, and the frequency-voltage converter 220 converts the signal and outputs the signal to the display panel 230 for display; by extending the connection wire 240, the display panel 230 can be disposed at a position away from the liquid level detector 200, such as a control panel or a housing surface of a foot tub, for people to observe the water level value; the display panel 230 displays the signal value obtained by measuring the water level by the capacitive sensor 210 and the voltage converter 220 as digital display or lamp display, that is, the display panel 230 is provided with a liquid crystal display panel to visually display the value with a certain length unit as the height of the water level, or the lamps with different numbers or colors represent the value with a specific height of the water level, the lighting number or color of the lamps changes along with the change of the water level, and the like, the display mode of the display panel 230 is not limited to this embodiment, and the display mode can be changed for different functions and practicability according to the actual implementation.

Furthermore, the liquid level detector 200 applied to the foot tub can enable a user to intuitively know the water level height in the foot tub, and the water amount is convenient to increase and decrease; the foot bath basin is matched with different components to realize more functions; if the automatic water injection device is arranged on the foot tub, the automatic water injection device can be matched with the liquid level detector 200 to realize the automatic water injection to the characteristic water level; if the heating device is arranged on the foot tub, the automatic heating can be started when the water level reaches the set height by matching with the liquid level detector 200, so that the functionality of the foot tub is enriched, and different requirements of users can be met.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid level detection device of a foot tub comprises the foot tub and a liquid level detector, and is characterized in that: the footbath basin is provided with a water container which is a carrier of water during footbath and is provided with a container wall, and the water contacts the inner side of the container wall; the liquid level detector is arranged on the outer side of the container wall, and the container wall separates the water body from the liquid level detector; the liquid level detector carries out non-contact water level detection on the water body.

2. The liquid level detection device for the foot tub according to claim 1, wherein: the liquid level detector is provided with a capacitance sensor and a frequency-voltage converter.

3. The liquid level detection device for the foot tub as claimed in claim 2, wherein: the capacitance sensor is vertically provided with a detection part and a plurality of sensing parts, the detection part is connected with the sensing parts, and different sensing parts jointly detect the change value of the water level and calculate the change capacitance value through the detection part; and a space is arranged between the sensing parts.

4. The liquid level detection device for the foot tub according to claim 2, wherein: the frequency-voltage converter is electrically connected with the capacitance sensor, the capacitance sensor detects the change of capacitance value through the water level change in the water container, and the capacitance value is converted into a measurable electric parameter through the frequency-voltage converter.

5. The liquid level detection device for the foot tub according to claim 1, wherein: the liquid level detector is connected with a display panel, connecting wires are connected between the display panel and the capacitance sensor and between the display panel and the frequency-voltage converter, and signals converted by the frequency-voltage converter are displayed through the display panel.

6. The liquid level detection device for the foot tub according to claim 5, wherein: the display panel displays signals obtained by measuring the water level by the capacitive sensor and the frequency-voltage converter, and the display mode is digital display or lamp display.