Non-pressure-bearing type solar water heating system

Abstract

The invention discloses a non-pressure-bearing type solar water heating system, which comprises a water storage unit, a solar heat collection unit, a cold water pipeline, a hot water pipeline and a controller, wherein the water storage unit comprises a non-pressure-bearing type water tank, and a heating element, a liquid level meter and a first temperature measuring device which are arranged in the non-pressure-bearing type water tank; the solar heat collection unit comprises a non-pressure-bearing type evacuated tube collector provided with an inlet and an outlet, an inlet pipeline used for connecting the non-pressure-bearing type water tank and the inlet of the non-pressure-bearing type evacuated tube collector, an outlet pipeline used for connecting the outlet of the non-pressure-bearing type evacuated tube collector, a circulating pump arranged on the inlet pipeline and a second temperature measuring device arranged on the outlet pipeline; the cold water pipeline comprises a cold water pipe communicated with the non-pressure-bearing type water tank, and a first electromagnetic valve arranged on the cold water pipe; the hot water pipeline comprises a hot water pipe communicated with the non-pressure-bearing type water tank, and a second electromagnetic valve and a booster pump which are arranged on the hot water pipe; the controller is used for controlling the water storage unit, the solar heat collection unit, the cold water pipeline and the hot water pipeline.

Description

technical field [0001] The invention relates to a non-pressurized solar water heating system. Background technique [0002] At present, most of the domestic markets are traditional compact solar water heating systems. The compact solar water heating system refers to the water heater in which the water tank and the collector are connected to the same bracket and are not separated and not under pressure. The compact solar water heating system generally adopts all-glass vacuum tubes for heat collection, so the installation cannot be coordinated with the roof of the building, the visual effect is not good, it is unsafe, and it affects the beauty of the building. In addition, the shortcomings of the compact solar water heating system itself, such as easy fouling of vacuum tubes, easy explosion and broken tubes, no pressure, and difficult automatic control, limit its promotion and application in cities. Contents of the invention [0003] The invention provides a non-pressurize...

AI Technical Summary

Problems solved by technology

The compact solar water heating system generally adopts all-glass vacuum tubes to collect heat, so the installation cannot be coordinated with the roof of the building, the visual effect is not good, it is unsafe, and it affects the beauty of the building

In addition, the compact solar water heating system itself has insufficient product defects such as easy fouling of vacuum tubes, easy explosion of tubes and broken tubes, no pressure, and difficult automatic control, which limits its popularization and application in cities.

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