Water heater with function of self removing scale of heat preservation container and heating rods

Abstract

The invention discloses a water heater with a function of self removing scale of a heat preservation container and heating rods. The water heater comprises a shell and the heat preservation containerarranged in the shell, wherein the two heating rods are horizontally installed on the inner side wall of the heat preservation container; the water heater is characterized in that a reciprocating screw rod is rotationally connected between the centers of the left end surface and the right end surface of the heat preservation container, a water inlet pipe is arranged at the upper end of the shell,an impeller is fixedly connected to the outer side of the reciprocating screw rod in a sleeved mode, a water flow input by the water inlet pipe impacts the impeller and drives the reciprocating screwrod to rotate, a lead screw nut is installed on the reciprocating screw rod, the side wall of the lead screw nut is perpendicular to and fixedly connected with connecting rods, the outer ends of the two connecting rods are connected with the same fixing ring, and an annular groove is formed in the outer ring wall of the fixing ring in the circumferential direction of the fixing ring. According tothe water heater, the concept is novel, scale removing can be carried out on the surface of the water heater heat preservation container and the surfaces of the heating rods after water heating through the water heater every time, so that the heating efficiency and the heat preservation effect of the water heater are guaranteed.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a water heater with the function of self-clearing the scale of the heat preservation tank and the heating rod. Background technique [0002] In the existing electric water heater, the heating rod is placed in the water tank to directly heat the cold water in the water tank. The disadvantage is that after a period of use, the heat exchange efficiency between the heating rod and the water in the water tank is greatly reduced and the heat preservation effect of the water tank is greatly reduced. It is greatly reduced, and may even burn the heating rod; the reason is that the impurities in the tap water become scales and accumulate on the surface of the heating rod and the inner wall of the insulation tank after being heated. Therefore, when the scale on the surface of the heating rod accumulates to a certain extent, the heating rod will be reduced The heat exchange efficiency ...

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Problems solved by technology

[0002] In the existing electric water heater, the heating rod is placed in the water tank to directly heat the cold water in the water tank. The disadvantage is that after a period of use, the heat exchange efficiency between the heating rod and the water in the water tank is greatly reduced and the heat preservation effect of the water tank is greatly reduced. It is greatly reduced, and may even burn the heating rod; the reason is that the impurities in the tap water become scales and accumulate on the surface of the heating rod and the inner wall of the insulation tank after being heated. Therefore, when the scale on the surface of the heating rod accumulates to a certain extent, the heating rod will be reduced The heat exchange efficiency between water and water, when the scale is too thick, the heating rod will burn the heating wire because the internal heat cannot be dissipated in time, which shortens the service life of the heating rod and the water tank, and wastes resources; in addition, the inner wall of the insulation tank and the heating The agglomerated dirt on the outer wall of the rod will often fall off in pieces due to thermal expansion and contraction. These hard dirt are easy to block the water outlet, valve and nozzle, affecting the normal use of the water heater

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