Pipeline pressure automatic controller for atmospheric water supply of water tank

Abstract

The invention discloses a pipeline pressure automatic controller for the atmospheric water supply of a water tank, which comprises a power supply circuit (11), a water level detection circuit (12), a RC time-delay circuit (13), a pressure control circuit (14) and a power amplification circuit (15). The water level detection circuit (12) prohibits the work of the pressure control circuit (14) according to a signal of a water level probe when the water level in the water tank is lower than the water level probe. In this way, a water pump cannot be started and the water shortage protection is implemented. When the water level in the water tank is higher than the water level probe, the pressure control circuit (14) controls the start and the stop of the water pump according to a signal of a pressure control switch. When the pipeline pressure is less than a predetermined minimum value, the pressure control circuit (14) starts the water pump to fill the pipeline so as to increase pressure or keep water flow. When the pipeline pressure is higher than a predetermined value, the pressure control circuit (14) turns off the water pump and stops water injection. In order to guarantee predetermined pressure in the pipeline, the water pump is stopped after five seconds when a pressure detection switch is opened. The pipeline pressure controller provided by the invention can be widely used for automatic control on pressure of water supply pipelines for atmospheric water supply of water sources (such as water tank, pool and the like) with limited volume.

Description

technical field [0001] The invention relates to an automatic water supply pipeline pressure controller for water supply of a normal pressure water tank, which comprises a pressure detection switch, a water level probe of the water tank and an automatic control device. technical background [0002] The split-type solar water heaters currently on the market all use pressurized water tanks. This kind of pressurized water tank has a large volume, high requirements on materials, difficult processing technology, and is prone to failures such as water leakage. The biggest disadvantage is that it is difficult to install indoors. I have designed and manufactured a split-type solar water heater that is easy to install indoors with an atmospheric water tank——"Solar water heater with built-in water tank in the wall cabinet", and has applied for a patent, application number: 201020595342.X. Due to the use of an atmospheric tank, the tank cannot pressurize the hot water line. The water ...

AI Technical Summary

Problems solved by technology

The biggest problem of using this method in solar water heaters is that when the water flow in the hot water pipeline is small (the faucet is opened small), the water flow cannot hold up the water flow valve body, and the magnet cannot approach the reed switch, so the control circuit is out of order. Unable to control booster pump start

Another problem is that this kind of controller must be installed vertically, which also makes installation difficult

In addition to looking for a controller suitable for solar water heaters in the market to no avail, I searched a lot of information and did not find a suitable automatic controller for pipeline pressure.

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