Solar vacuum tube with inner tube water scale self-clearing function

Abstract

The invention discloses a solar vacuum tube with an inner tube water scale self-clearing function. The solar vacuum tube comprises a solar vacuum tube body composed of an inner tube and an outer tube,a ball screw is arranged at the inner bottom of the inner tube in a penetrating mode, the ball screw is rotatably connected with the inner bottom of the inner tube in a sealing mode, a rotating cylinder is fixedly arranged on the part, located at the lower end, of the ball screw in a sleeving mode, a plurality of electromagnet brush sheets are arranged on the side wall of the rotating cylinder atequal intervals in the circumferential direction of the rotating cylinder, and the direction of the magnetic line of each of the electromagnet brush sheets is along the radial direction of the rotating cylinder. Heat dissipating tiles matched with the inner wall of the outer tube are fixedly installed at the outer ends of the electromagnet brush sheets, and the side surfaces of the heat dissipating tiles sweep the arc surface of the outer tube as the heat dissipating tiles rotate along the rotating cylinder. The solar vacuum tube has a novel concept, can remove water scales of the inner wallof the solar vacuum tube, and the heating efficiency and the service life of the solar vacuum tube are ensured.

Description

technical field [0001] The invention relates to the technical field of solar water heater accessories, in particular to a solar vacuum tube with the function of self-clearing scale in the inner tube. Background technique [0002] The disadvantage of the vacuum tube solar collector is that the heat exchange efficiency between the heat-absorbing coating in the solar vacuum tube and water is greatly reduced after a period of use. The reason is that the impurities in tap water become scale and accumulate on the inner wall of the solar vacuum tube after being heated, so when the scale on the inner wall of the solar vacuum tube accumulates to a certain extent, the heat exchange efficiency between the heat-absorbing coating and water will be reduced, and the scale is too thick Sometimes the heat-absorbing coating on the solar vacuum tube cannot be dissipated in time due to heat, and under such a high temperature state for a long time, the heat-absorbing coating will fall off, there...

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Problems solved by technology

[0002] The disadvantage of vacuum tube solar collectors is that the heat exchange efficiency between the heat-absorbing coating in the solar vacuum tube and water is greatly reduced after a period of use

The reason is that the impurities in tap water become scale and accumulate on the inner wall of the solar vacuum tube after being heated, so when the scale on the inner wall of the solar vacuum tube accumulates to a certain extent, the heat exchange efficiency between the heat-absorbing coating and water will be reduced, and the scale is too thick When the heat-absorbing coating on the solar vacuum tube cannot be dissipated in time due to heat, the heat-absorbing coating will fall off under such a high temperature state for a long time, thus affecting the heat collection efficiency and service life of the vacuum tube

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