Water heater capable of automatically removing water scale and scale removal method

Abstract

The invention provides a water heater comprising a water storage liner. A heating pipe is arranged in the water storage liner; a water inlet pipe with one end being closed is fixed to the other end ofthe water storage liner, and the closed end of the water inlet pipe is located in the water storage liner; water injection holes penetrating through the pipe wall of the water inlet pipe are formed in the position, in the water storage liner, of the outer wall of the water inlet pipe; an annular movable retainer ring is connected to a lead screw in a threaded mode; a plurality of flexible scrapers are fixed to the outer side wall of the movable retainer ring and abut against the inner side wall of the water storage liner in a pressed mode; a driving piece is fixed to one end of the lead screw; a sewage discharging pipe is fixed to the lower end of the water storage liner; the driving piece drives the lead screw under control of a controller to rotate; a water scale detection device is further arranged in the water storage liner and connected with the controller for detecting the thickness of water scale in the water storage liner in real time.

Description

Technical field [0001] The invention relates to the field of water heater equipment, in particular to a water heater capable of automatically removing scale. Background technique [0002] Water heaters generally refer to a device that increases the temperature of cold water into hot water within a certain period of time through various physical principles. According to the principle of heating, it can be divided into gas water heaters, solar water heaters, electric water heaters, etc., electric water heaters The working principle is generally to heat the water in the water tank of the heating tube water heater, and the water in the existing water tank contains more or less impurities, which are easy to adhere to the inner wall of the water tank. When the water is heated repeatedly, some substances in the water are easily separated from the water to form scale attached to the inner wall of the water storage tank, but the existing electric water heater has no structure for cleaning...

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Problems solved by technology

[0002] Water heaters generally refer to a device that raises the temperature of cold water into hot water within a certain period of time through various physical principles, and it can be divided into gas water heaters, solar water heaters, electric water heaters, etc. according to the heating principle. The working principle is generally to heat the water in the water tank of the heating tube water heater, but the water in the existing water tank has more or less impurities, which are easy to adhere to the inner wall of the water tank, and at the same time, the water tank The water is heated repeatedly, and some substances in the water are easy to separate out of the water to form scale and adhere to the inner wall of the water tank. However, there is no structure for cleaning the scale in the water tank of the existing electric water heater.

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