Pressure-bearing glass vacuum pipe of solar water heater
A solar water heater and glass vacuum tube technology, which is applied in the directions of solar collectors, solar thermal energy, solar thermal power generation, etc., to achieve the effect of improving heat exchange efficiency
Inactive Publication Date: 2011-09-21
青岛海里昂供应链有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a pressure-bearing glass vacuum tube for solar water heaters to overcome the technical deficiencies above the existing glass vacuum tubes
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[0015] like figure 1 , including a glass vacuum tube 6, characterized in that it also includes a metal tube 1 sleeved in the glass vacuum tube 6, the upper end of the metal tube 1 is turned outward to cover the upper end of the glass vacuum tube 6, and the metal tube 1 is tightly combined by a silicon rubber sealing ring 2 In the water tank liner 3.
[0016] Considering the tightness, a sealing ring 7 is provided at the junction of the glass vacuum tube 6 and the outer wall end of the metal tube 1 .
[0017] Considering thermal expansion and contraction, there is a gap 9 between the metal tube 1 and the glass vacuum tube 6, and the range of the gap is between 0.5 mm and 1.0 mm.
[0018] In consideration of improving the absorption rate of sunlight, a coating 8 is plated on the outer wall of the metal pipe 1, and the thickness is 10 -2 ~10 -3 mm.
[0019] The above coating 8 is made of iron-manganese-copper oxide or other materials that can increase the solar light absorpti...
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The invention relates to a pressure-bearing glass vacuum pipe of a solar water heater, comprising a glass vacuum pipe. The pressure-bearing glass vacuum pipe is characterized by also comprising a metal pipe sleeved in the glass vacuum pipe, wherein the upper end of the metal pipe is upturned to wrap the upper end of the glass vacuum pipe, and the metal pipe is tightly combined with a liner of a water tank through a silicon rubber seal ring; a seal ring is arranged at a joint position of the end heads of the outer walls of the glass vacuum pipe and the metal pipe by considering air tightness; a gap is retained between the metal pipe and the glass vacuum pipe by considering expansion caused by heat and contraction caused by cold; and a coating with the width of 10<-2>-10<-3> mm is plated on the outer wall of the metal pipe by considering the enhancement of the absorption rate of sunlight. The pressure-bearing glass vacuum pipe not only has high heat exchange efficiency, but also can bear the pressure of tap water from an urban water supply pipeline for a long time, and though the glass vacuum pipe is damaged, the tap water can not leak.
Description
technical field [0001] The invention belongs to the main component glass vacuum tube of a solar water heater in the field of new energy, and in particular relates to a pressure-bearing glass vacuum tube of a solar water heater. Background technique [0002] Existing solar water heater, heat collector is installed on circular water tank, cold and hot water upper and lower water pipes, hot water outlet, overflow outlet, electric auxiliary heating device. Existing heat collector is made up of glass vacuum tube, and vacuum tube is directly inserted in the water tank, and directly holds water in the tube, and solar radiation heats the water in the tube and the water in the water tank to carry out heat exchange for heating. In the solar water heater of this structure, the glass vacuum tube can only bear the natural falling water pressure from the water tank, but cannot withstand the tap water pressure from the urban water supply pipeline for a long time, which limits the direct pr...
Claims
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IPC IPC(8): F24J2/46F24J2/48
CPCY02E10/40Y02E10/44F24J2/055F24S10/45
Inventor 范传经
Owner 青岛海里昂供应链有限公司