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Liquid level detection circuit, power supply control circuit and disinfectant manufacturing machine

A technology of power control circuit and liquid level detection, which is applied in the direction of liquid level indicators for physical variable measurement, and can solve problems such as the working status of disinfectant manufacturing machines

Pending Publication Date: 2020-11-17
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is that when the existing disinfectant making machine in the prior art has no water inside, it is necessary to artificially turn off the power supply, otherwise the disinfectant making machine is always in working condition

Method used

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  • Liquid level detection circuit, power supply control circuit and disinfectant manufacturing machine
  • Liquid level detection circuit, power supply control circuit and disinfectant manufacturing machine
  • Liquid level detection circuit, power supply control circuit and disinfectant manufacturing machine

Examples

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Embodiment 1

[0042] like figure 1 and figure 2 As shown, the embodiment of the present invention provides a liquid level detection circuit, and the liquid level detection circuit includes: a first power supply, a sampling circuit and a detection circuit.

[0043] The sampling circuit includes a plurality of sampling resistor groups serially connected in series, one end of the sampling circuit is connected to the first power supply through a voltage dividing resistor R7, and the other end is grounded. The detection circuit is connected between the voltage dividing resistor R7 and the sampling circuit, and the detection circuit is used to detect the voltage or current of the sampling circuit. In the embodiment of the present invention, the voltage detected by the detection circuit is used as an example for illustration. The sampling resistor group can be a single resistor, or multiple resistor groups connected in series and parallel.

[0044] In practical applications, multiple sampling ...

Embodiment 2

[0055] like image 3 and Figure 4 As shown, the embodiment of the present invention also provides a power control circuit, the power control circuit includes: a second power supply and a first switch circuit.

[0056] The control end of the first switch circuit is connected to the signal source, the first end is connected to the second power supply, and the second end is connected to the power circuit, which is used to supply power to the electrolysis device of the disinfectant solution maker.

[0057] The first switch circuit may be a switch tube, such as a triode, a MOS tube and other switching elements. like Figure 4 As shown, in this embodiment, the first switch circuit is a PMOS transistor U1. This embodiment only exemplifies the type of the first switch circuit and does not limit it. Those skilled in the art can change the type of the first switch circuit according to the actual situation, as long as the same technical effect can be achieved.

[0058] In this way, ...

Embodiment 3

[0065] like Figure 5 and Image 6 As shown, the embodiment of the present invention also provides a disinfectant production machine, which comprises: a control circuit; the liquid level detection circuit as described in any one, the liquid level detection circuit is electrically connected to the control circuit connection; the power control circuit according to any one, the power control circuit is electrically connected to the control circuit; the electrolysis device is connected to the power circuit in the power control circuit. The electrolysis device is used to electrolyze the electrolyte in the liquid storage container to generate disinfectant water.

[0066] Of course, in this embodiment, a control chip MCU may also be provided, and the control circuit, liquid level detection circuit, power control circuit and signal source are all provided in the control chip MCU. like Image 6 As shown, the sampling resistor group is placed vertically along the height direction of ...

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Abstract

The invention discloses a liquid level detection circuit, a power supply control circuit and a disinfectant manufacturing machine. The disinfectant manufacturing machine comprises a control circuit; aliquid level detection circuit which is electrically connected with the control circuit; a power supply control circuit which is electrically connected with the control circuit; and an electrolysis device which is connected with the power supply circuit in the power supply control circuit. Through the arrangement, when the water level in the liquid storage container of the disinfectant manufacturing machine is low or no water exists, the control circuit can automatically control the signal source to output a low level, so that the power supply is automatically turned off, the disinfectant manufacturing machine is controlled to stop electrolysis, the disinfectant manufacturing machine is prevented from being in a working state all the time, and normal use of the disinfectant manufacturingmachine is guaranteed.

Description

technical field [0001] The invention relates to the technical field of household appliances, in particular to a liquid level detection circuit, a power supply control circuit and a disinfectant manufacturing machine. Background technique [0002] With the improvement of people's living standards, many smart appliances have entered people's lives, and the disinfectant making machine is one of the people's daily use. The working principle of the disinfectant making machine is: use electrolysis of sodium chloride aqueous solution to generate sodium hypochlorite solution. Sodium hypochlorite is further decomposed by hydrolysis to form new ecological oxygen, which has strong oxidizing properties and can denature proteins on bacteria and viruses. [0003] In the process of sterilizing and killing viruses, hypochlorous acid can not only act on the cell wall and virus shell, but also penetrate into the body of bacteria (viruses), and oxidize with organic polymers such as bacteria (...

Claims

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Application Information

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IPC IPC(8): G01F23/24
CPCG01F23/24
Inventor 张标李绍健欧梦钦金胜昔杨玉琼曾森
Owner GREE ELECTRIC APPLIANCES INC
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