A direct drinking water ultraviolet disinfection control system and control method

Abstract

The invention provides a direct drinking water ultraviolet disinfection control system and control method. The control system includes a controller and a sterilizing device controlled by the controller. The sterilizing device includes a housing, an electric water valve, a water detection device, an ultraviolet sterilizing module, and an ultraviolet detection sensor. , ultraviolet sterilization part and water outlet channel; the control method can perform repeated detection within the delay calculation and timing calculation time; the controller can control the electric water valve and ultraviolet germicidal lamp according to the corresponding detection results, and display the disinfection control system on the display Case. The invention can fully kill the bacteria in the water flow, reduce the working temperature of the ultraviolet germicidal lamp and prolong the service life.

Description

technical field [0001] The invention relates to the technical field of drinking water disinfection, in particular to an ultraviolet disinfection control system and control method for direct drinking water. Background technique [0002] With the development of society and the improvement of people's living standards, drinking water dispensers have become standing drinking water equipment in public units such as families, schools, hospitals, factories, stations, airports, etc. The existence of bacteria brings sanitary hazards to our drinking water. The main reasons are as follows: 1. Bacteria in the air enter [0003] 2. The water in the water storage container, cold water container, and pipeline is easy to breed bacteria in the range of normal temperature to 60°C; 3. The exposed water outlet part of the faucet also breeds bacteria. In the development of the industry, many methods have been tried to solve this problem, but none of them have a good effect. Among the common dis...

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Problems solved by technology

[0007] However, the water inlet, water outlet channel, and water outlet of this ultraviolet sterilizing water dispenser are connected in sequence to form a sterilizing waterway. contact; and the water dispenser only has a single water flow detection; when the water flow is detected to enter the water dispenser, the water flow will flow quickly along the sterilizing water channel, and the residence time in the water dispenser is short, resulting in a short contact time between ultraviolet rays and water flow, and because ultraviolet rays It is necessary to pass through the through hole to sterilize the water, resulting in a small contact area between the ultraviolet rays and the water flow, so that the ultraviolet rays cannot fully kill the bacteria in the water flow, and the body is prone to discomfort after drinking the water; the ultraviolet lamp contained in the quartz glass tube dissipates heat Poor, short service life; although the light transmission performance of quartz glass is very good, there is still 7% to 20% light loss for the ultraviolet light in the sterilization band, which leads to low utilization rate of ultraviolet light and decreased sterilization efficiency; The ultraviolet light is equipped with a detection device. When the ultraviolet light is damaged, there is no relevant prompt signal. If the water dispenser is started without knowing that the ultraviolet light is damaged, the water flow does not come into contact with the ultraviolet light and is directly drunk after flowing out of the water outlet. This poses a safety hazard.

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