Siphon descaling type solar water heater and descaling method of siphon descaling type

Abstract

The invention discloses a siphon descaling type solar water heater and a siphon descaling type descaling method thereof. The siphon descaling type solar water heater comprises a water tank, an upper water tube, a plurality of heat collecting tubes, a shower / upper water valve, a water return tube and a siphon descaling type descaling mechanism, wherein the descaling mechanism comprises a plurality of scale sucking tubes, a scale collecting tube, a scale discharge tube, a scale discharge / back-flushing valve and a scale drive tube. According to the siphon descaling type solar water heater, water scales which are deposited on the bottom of a vacuum heat collecting tube are sucked out and are exhausted into an overflow water container of a bathroom by the siphonic effect of an inverted U-shaped tube; the descaling function of driving scales, discharging the scales, controlling and back-flushing is realized through a mechanism combining the scale sucking tubes, the scale collecting tube, the scale discharge tube, the scale discharge / back-flushing valve and the scale drive tube. In a normal using process, the water scales in the heat collecting tube and the water tank can be automatically removed, and a water heater main body is not required to frequently dismounted for mechanically or chemically descaling. The invention further discloses the siphon descaling type descaling method of the siphon descaling type solar water heater.

Description

technical field [0001] The invention relates to a water heater and a descaling method thereof, in particular to a siphon descaling type solar water heater and a siphon descaling type descaling method thereof. Background technique [0002] With its energy saving, environmental protection, convenience, and cheap features, solar water heaters have become the first choice for bathing in millions of households, but the scale problem has plagued users. [0003] After the solar water heater is used for a period of time, various substances will be deposited on the bottom of the heat collecting tube and the inner wall of the water tank. They are mainly composed of calcium and magnesium compounds, silt, rust sediment, bacteria and algae, etc., which are generally referred to as scale. The scale problem is particularly prominent in areas where groundwater is used as the water source or where the water hardness is high. [0004] When the scale is born, it is generally a porridge-like s...

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Problems solved by technology

[0019] The present invention provides a siphon descaling type solar water heater and its siphon descaling type descaling method in order to avoid the shortcomings in the above prior art, which can automatically remove the descaling in the heat collecting tube and the water tank during normal use. Scale to solve the fouling problem of conventional solar water heaters

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