Overflow self-stop device of solar water heater

Abstract

The invention discloses an overflow self-stop device of a solar water heater and relates to the field of water supply of solar water heaters on building roofs. At present, solar water heaters are still adopted by households in second-tier cities, third-tier cities, fourth-tier cities and rural areas in China, because solar water heaters have many advantages that firstly, electricity is not consumed while illumination is utilized, and money is saved; and secondly, the insulation effect is good, the solar water heaters are safe, and the service life is up to a dozen years. But the solar water heaters still have the defect that water leaks for a long time or all night when people forget to stop water supply after overflow, which is the most troublesome problem for every family. The overflow self-stop device designed by the invention is simple in circuit and low in cost, and just needs to be mounted indoors, and the cost of the product and manual mounting is just few dozen yuan. A fuse (FU), a transformer (T), a touch switch (S) and an optocoupler (U) form an alternating current power supply input circuit. Diodes (D1, D2, D3 and D4) form a bridge rectifier circuit. Capacitors (C3) and(C4) form a primary filter. A three-terminal voltage regulator integrated circuit (IC) and 7812 form a voltage regulator circuit.

Description

Technical field [0001] The invention relates to a "full-water self-closing device for solar water heaters" which is used in the water supply field of solar water heaters on the roof of buildings. Background technique [0002] At present, households in my country's second-, third-, and fourth-tier cities and rural areas are still using solar water heaters, because solar water heaters have many advantages. First, there is no need to use electricity to save money when there is light. 2. The heat preservation effect is good and safe, and the life span is more than ten years. 3. Compared with electric water heaters that are perishable and waste money using electricity, it is a good choice, but it also has the disadvantage that it is the most troublesome problem for every family to forget to turn off the water after filling the water for a long time or all night. I often hear the sound of water leakage from solar water heaters all night long. There have been more advanced electronic c...

AI Technical Summary

Problems solved by technology

3. It is a good choice compared to electric water heaters that are easy to break and use electricity to waste money, but there is also a disadvantage that water leakage for a long time or overnight is the most troublesome problem for every family. I often hear the sound of solar water heaters leaking all night long. There are already more advanced electronic circuit water supply self-closing controllers on the market, but when installing them, it takes dozens of meters of wires from the roof to the room and then changes the pipes. , one is that it is difficult, and the other is that the price is high, and it cannot be bought without a few hundred yuan

4. Sheung Shui self-closing controller is plugged into the power supply all day long, and it is uneconomical to use electricity for 24 hours

Images