CN217637546U

CN217637546U - Liquid level detection circuit of dispenser

Info

Publication number: CN217637546U
Application number: CN202221360823.1U
Authority: CN
Inventors: 陈捷; 何南; 吴松; 彭南山
Original assignee: Wenzhou Oustar Electrical Industry Co ltd
Current assignee: Wenzhou Oustar Electrical Industry Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-10-21
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a liquid level detection circuit of a distributor, which comprises a capacitance type liquid level detection circuit and an indicator light circuit electrically connected with the liquid level detection circuit; the capacitive liquid level detection circuit comprises a main body chip and a plurality of conductive plates which are connected to the main body chip, wherein the plurality of conductive plates are arranged in the shell of the dispenser at positions corresponding to the liquid bottle and are distributed along the height direction of the liquid bottle; the conducting plate is used for forming induction with liquid in the liquid bottle so as to detect the liquid level in the liquid bottle. The utility model discloses can let and give off the utensil and be equipped with the liquid level detection effect, can produce the liquid bottle and change suggestion effect and liquid level state suggestion effect.

Description

Liquid level detection circuit of dispenser

Technical Field

The utility model relates to a liquid level detection circuit of emanator.

Background

The dispenser is a main component used for assisting in volatilizing perfume or mosquito-repellent incense liquid, and liquid volatilization is carried out by matching the heating element with the core rod. Based on the principle, if the liquid volatilizes, the core rod can not continuously obtain the liquid, and under the action of continuous heating of the heating element, the problem of dry burning is easy to occur, so that on one hand, energy waste is caused, and on the other hand, fire disasters are easy to cause. In addition, the user may forget to replace the liquid bottle, which results in ineffective mosquito repelling or fragrance increasing effect and easily affects the user experience.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a liquid level detection circuit of emanator can let emanator be equipped with the liquid level detection effect, can produce the liquid bottle and change prompt facility and liquid level state prompt facility.

In order to achieve the above purpose, the utility model provides a following technical scheme: a liquid level detection circuit of a distributor comprises a capacitance type liquid level detection circuit and an indicator light circuit electrically connected with the liquid level detection circuit; the capacitive liquid level detection circuit comprises a main body chip and a plurality of conductive plates which are connected to the main body chip, wherein the plurality of conductive plates are arranged in the shell of the dispenser at positions corresponding to the liquid bottle and are distributed along the height direction of the liquid bottle; the conductive plate is used for forming induction with liquid in the liquid bottle so as to detect the liquid level in the liquid bottle.

As a further improvement of the present invention, a plurality of conductive plates are integrated on a PCB board, and the PCB board is located in the housing of the dispenser corresponding to the position of the liquid bottle.

As a further improvement of the utility model, state that the current conducting plate forms through its width on liquid bottle direction of height and detects the interval, when the liquid level is less than this detection interval that corresponds, the current conducting plate that corresponds and detect the interval breaks away from the response with the liquid level of liquid bottle.

As a further improvement of the present invention, the number of the current-conducting plates is N, and N +1 detection liquid levels are formed by the current-conducting plates; the number of the indicating lamps in the indicating lamp circuit is the same as that of the detection liquid levels, and the indicating lamps are respectively corresponding to the detection liquid levels to be lightened or extinguished.

As a further improvement of the present invention, the number of the current-conducting plates is N, and N +1 detection liquid levels are formed by the current-conducting plates; the quantity of pilot lamp in the pilot lamp circuit is the same with the quantity of current conducting plate, and corresponds preceding N detection liquid level respectively and lights or extinguishes, corresponds the (N + 1) th and detects the liquid level and carry out the scintillation.

As a further improvement, when the liquid bottle is corresponding to each detection liquid level, the corresponding indicator light is lighted.

As a further improvement of the utility model, the number of the current-conducting plates is three, and four detection liquid levels are formed; the indicating lamp circuit comprises three indicating lamps, and the liquid level is detected from high to low to form full on, two off on and full off correspondingly.

As a further improvement of the utility model, the number of the current-conducting plates is three, and four detection liquid levels are formed; the indicating lamp circuit comprises three indicating lamps, and the detection liquid level of the liquid level from high to low correspondingly forms full lighting, two lighting in one extinction and one flashing in one extinction.

The utility model has the advantages that: the conductive plate for capacitive liquid level detection can realize liquid level induction without directly contacting with liquid in a liquid bottle, and has the characteristics of cleanness and cleanness. And when a user replaces the liquid bottle, the corresponding operation on the conductive plate is not needed, and the inductive matching of the conductive plate and the liquid level can be realized again only by normally replacing the liquid bottle. And the position distribution of a plurality of conducting plates corresponds to the height direction of the liquid bottle, which means that the conducting plates can correspond to the liquid level in the liquid bottle, and the matching state between the corresponding conducting plates and the liquid level can also change along with the reduction of the liquid level, so that the liquid level detection condition can be reflected by matching with an indicator light circuit. Can indicate the user in time to know and change the liquid bottle, avoid appearing dry combustion method and lead to the safety problem and extravagant unnecessary electric quantity.

Drawings

Fig. 1 is a schematic diagram of the matching state (module) between the capacitive liquid level detection circuit and the liquid bottle of the present invention;

fig. 2 is a schematic view of the matching state (structure) between the capacitive liquid level detection circuit and the liquid bottle of the present invention;

reference numerals: 1. a capacitive liquid level detection circuit; 11. a main body chip; 12. a conductive plate; 2. an indicator light circuit; 3. a PCB board; 4. and (4) liquid bottles.

Detailed Description

The present invention will be described in further detail with reference to embodiments shown in the drawings.

As shown with reference to figures 1-2,

a liquid level detection circuit of a distributor comprises a capacitance type liquid level detection circuit 1 and an indicator light circuit 2 electrically connected with the liquid level detection circuit; the capacitance type liquid level detection circuit 1 comprises a main body chip 11 and a plurality of conductive plates 12 which are connected to the main body chip 11, wherein the plurality of conductive plates 12 are arranged in the shell of the dispenser at positions corresponding to the liquid bottle 4 and are distributed along the height direction of the liquid bottle 4; the conductive plate 12 is used for inducing with the liquid in the liquid bottle 4 so as to detect the liquid level in the liquid bottle 4.

The conductive plate 12 of the capacitance type liquid level detection can realize the induction of the liquid level without entering the liquid bottle 4 to directly contact with the liquid, and has the characteristics of cleanness and cleanness. When the user replaces the liquid bottle 4, the conducting plate 12 does not need to be operated correspondingly, and the inductive matching between the conducting plate 12 and the liquid level can be realized again only by replacing the liquid bottle 4 normally. The position distribution of the plurality of conductive plates 12 corresponds to the height direction of the liquid bottle 4, which means that the conductive plates can correspond to the liquid level in the liquid bottle 4, and the matching state between the corresponding conductive plates 12 and the liquid level changes along with the reduction of the liquid level, so that the liquid level detection condition is reflected by matching with the indicator light circuit 2. The main body chip 11 may adopt a TM601 capacitance sensing chip, and the capacitance sensing signal can be obtained by matching with the conductive plate 12, and the processing of the signal belongs to the prior art, which is a program provided by a technical manual of the main body chip 11, and the signal processing program of capacitance sensing belongs to a conventional technical means, and is not modified for the program in the present application, and therefore, the details are not repeated.

In addition, the conductive plate 12 forms a detection section by its width in the height direction of the liquid bottle 4, and when the liquid level is lower than the corresponding detection section, the conductive plate 12 corresponding to the detection section is out of the sensing with the liquid level of the liquid bottle 4. Because the conductive plate 12 is planar and has a certain width, and the width can cover one end of the liquid bottle 4 in the liquid level interval, when the liquid level is in the interval, the conductive plate 12 can sense the liquid in the liquid bottle 4 to realize the detection. Only when the liquid level is separated from the interval, the induction of the conductive plate 12 corresponding to the interval disappears, and at this time, the corresponding liquid level state can be fed back to the interval separated from the conductive plate 12.

Two embodiments of indicator light cooperation with the conductive plate 12 are also provided:

A1. the number of the conductive plates 12 is N, and N +1 detection liquid levels are formed through the conductive plates 12; the number of the indicator lamps in the indicator lamp circuit 2 is the same as that of the detection liquid levels, and the indicator lamps are respectively corresponding to the detection liquid levels to be turned on or turned off.

A current conducting plate 12 can form one and detect the interval, and two detection liquid levels of formation that correspond, and mutually support between N current conducting plate 12, can form N +1 and detect the liquid level, and the pilot lamp quantity that adopts can match with the quantity that detects the liquid level, and along with the liquid level reduces, the pilot lamp that corresponds the liquid level extinguishes, and when all detection liquid levels all can not detect liquid, all pilot lamps all extinguish. Of course, the opposite may be used, with the indicator light being turned off to be on. The lighting mode is simple to operate, and only the indication lamp needs to be controlled to be electrified or not.

A2. The number of the conductive plates 12 is N, and N +1 detection liquid levels are formed through the conductive plates 12; the number of the indicator lamps in the indicator lamp circuit 2 is the same as that of the conductive plates 12, and the indicator lamps are respectively corresponding to the front N detection liquid levels to be lightened or extinguished and corresponding to the (N + 1) th detection liquid level to be flickered.

The number of the indicating lamps is the same as that of the conducting plates 12, and the difference is the same as that of the embodiment A1, so that the number of the indicating lamps is reduced, the indicating lamps have a flashing function, the warning function is stronger, and a user can be prompted to replace the liquid bottle 4.

The preferred lighting mode of the indicator lamps is that when liquid exists in the liquid bottle 4 corresponding to each detection liquid level, the corresponding indicator lamps are lighted.

The lighting relation can be better matched with the state of the liquid level, and the corresponding liquid level state is clearer.

In a more specific embodiment, wherein:

optionally, the number of the conductive plates 12 is three, and four detection liquid levels are formed; the indicating lamp circuit 2 comprises three indicating lamps, and the liquid level is detected from high to low to form full on, two off on and full off correspondingly.

Optionally, the number of the conductive plates 12 is three, and four detection liquid levels are formed; the indicating lamp circuit 2 comprises three indicating lamps, and the detection liquid level of the liquid level from high to low correspondingly forms full lighting, two lighting in one extinction and one flashing in one extinction.

The specific arrangement of the detection liquid level may be 100%, 70%, 40%, 5%, that is, it corresponds to three conductive plates 12 all having induction, two conductive plates 12 having induction, one conductive plate 12 having induction, three conductive plates 12 having no induction, respectively.

In addition, the conducting strips can be integrated on a PCB (printed circuit board) 3, so that the assembly is further convenient, and the liquid level distance of stable detection can be kept.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A liquid level detection circuit of a dispenser is characterized by comprising a capacitance type liquid level detection circuit and an indicator light circuit electrically connected with the liquid level detection circuit; the capacitive liquid level detection circuit comprises a main body chip and a plurality of conductive plates which are connected to the main body chip, wherein the plurality of conductive plates are arranged in the shell of the dispenser at positions corresponding to the liquid bottle and are distributed along the height direction of the liquid bottle; the conducting plate is used for forming induction with liquid in the liquid bottle so as to detect the liquid level in the liquid bottle.

2. A liquid level detection circuit according to claim 1 wherein the plurality of conductive plates are integrated on a PCB board positioned within the housing of the dispenser in correspondence with the position of the liquid bottle.

3. The liquid level detection circuit according to claim 1, wherein the conductive plate forms a detection section by its width in the height direction of the liquid bottle, and when the liquid level is lower than the corresponding detection section, the conductive plate corresponding to the detection section is out of the sensing with the liquid level of the liquid bottle.

4. The liquid level detection circuit according to claim 1, 2 or 3, wherein the number of the conductive plates is N, and N +1 detection liquid levels are formed by the conductive plates; the number of the indicating lamps in the indicating lamp circuit is the same as that of the detection liquid levels, and the indicating lamps are respectively corresponding to the detection liquid levels to be lightened or extinguished.

5. The liquid level detection circuit according to claim 1, 2 or 3, wherein the number of the conductive plates is N, and N +1 detection liquid levels are formed by the conductive plates; the quantity of pilot lamp in the pilot lamp circuit is the same with the quantity of current conducting plate, and corresponds preceding N detection liquid level respectively and lights or extinguishes, corresponds the (N + 1) th and detects the liquid level and carry out the scintillation.

6. The liquid level detection circuit of claim 4, wherein the indicator lights are illuminated when liquid is present in the liquid bottle at each of the detected liquid levels.

7. The liquid level detection circuit of claim 5, wherein the indicator lights are illuminated when liquid is present in the liquid bottle at each of the detected liquid levels.

8. The liquid level detection circuit of claim 4, wherein the number of conductive plates is three and four detection levels are formed; the indicating lamp circuit comprises three indicating lamps, and the liquid level is detected from high to low to form full on, two off on and full off correspondingly.

9. The fluid level detection circuit of claim 5, wherein the conductive plates are three in number and form four detection fluid levels; the indicating lamp circuit comprises three indicating lamps, and the detection liquid level of the liquid level from high to low correspondingly forms full lighting, two lighting in one extinction and one flashing in one extinction.