Water-saving and energy-saving system of non-pressure-bearing type solar water heater

Abstract

The invention relates to the technical field of solar water heaters, and discloses a water-saving and energy-saving system of a non-pressure-bearing type solar water heater. The water-saving and energy-saving system of the non-pressure-bearing type solar water heater comprises a hot water outlet pipe connected with the solar water heater. The outer end of the hot water outlet pipe is connected with a water inlet of a three-way adjustment valve. Another water inlet of the three-way adjustment valve is connected with a tap water pipe. The outer end side surface of the hot water outlet pipe is connected with a water tank through a flow guide pipe. A piston is arranged in the water tank and divides the space in the water tank into a liquid storage cavity and a control cavity. The flow guide pipe communicates with the liquid storage cavity. A controller and a motor used for driving the piston to move are arranged in the control cavity. A motor manual switch is arranged on the lateral surface of the water tank. A temperature sensor is arranged inside the joint of the hot water outlet pipe and the flow guide pipe. A temperature display instrument connected with the temperature sensor is arranged on the outer side of the flow guide pipe. The motor and the temperature sensor are both connected with the controller. The water-saving and energy-saving system of the non-pressure-bearing type solar water heater has the beneficial effects of saving water resources and heat energy of the solar water heater.

Description

technical field [0001] The invention relates to the technical field of solar water heaters, in particular to a water-saving and energy-saving system for solar water heaters. Background technique [0002] The traditional roof vacuum tube type non-pressurized solar water heater is installed on the roof. There is a cold water inlet pipe and a hot water outlet pipe on the solar water heater. When the hot water is about to run out, replenish water through the cold water pipe, which is usually directly connected to the tap water. The upper end of the hot water pipe is connected to the solar water heater, and the lower end of the hot water pipe is connected to the three-way regulating valve at the water point. Usually, the length of the hot water pipe is between a few meters and more than ten meters. This section of the hot water pipe is directly exposed to the outside. In winter, after the hot water is used up, the water in the hot water pipe with a length of more than ten meters...

AI Technical Summary

Problems solved by technology

The upper end of the hot water pipe is connected to the solar water heater, and the lower end of the hot water pipe is connected to the three-way regulating valve at the water point. Usually, the length of the hot water pipe is between a few meters and more than ten meters. This section of the hot water pipe is directly exposed to the outside. In winter, after the hot water is used up, the water in the hot water pipe with a length of more than ten meters will turn cold due to heat dissipation, which wastes heat energy. The next time you need to use hot water, you need to drain this cold water (usually a few liters to more than ten liters) first. Only hot water will come out, resulting in waste of water resources. It takes a few minutes to drain the cold water in a pipe more than ten meters long, and there is a long waiting time when using hot water

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