Manufacturing craft for pressure-bearing heat exchanging liner of solar water heater

Abstract

The invention discloses a manufacturing craft for a pressure-bearing heat exchanging liner of a solar water heater. The manufacturing craft includes step 1, welding a inner liner inside an outer liner in a sealing mode, welding an inner liner inlet pipe and an inner liner outlet pipe which are communicated with the inner liner on the outer liner and welding an outer liner inlet pipe and an outer liner outlet pipe which are communicated with the outer liner on the outer liner, step 2, forming auxiliary holes of the same direction on the inner liner and the outer liner respectively wherein positions of the auxiliary holes can guarantee that when the auxiliary holes are in the highest positions of an inner liner chamber and an outer liner chamber, at least the inner liner inlet pipe or the an inner liner outlet pipe is below the outer liner, meanwhile, at least the outer liner inlet pipe or the outer liner outlet pipe is below the outer liner, step 3, welding hooking elements on the outer liner, wherein the number and positions of the hooking elements can guarantee that the auxiliary holes are in the highest positions of the inner liner chamber and the outer liner chamber. When the manufacturing craft for the pressure-bearing heat exchanging liner of the solar water heater is utilized, the structural stability of the pressure-bearing heat exchanging liner of the solar water heater is improved and the service life of the pressure-bearing heat exchanging liner of the solar water heater is prolonged under the condition that no processing equipment and material thickness are added.

Description

technical field [0001] The invention relates to a manufacturing process of a pressure-bearing heat exchange tank for a solar water heater. Background technique [0002] The application of solar water heaters in the family has been very common. At present, solar water heaters mainly include pressurized water heaters and non-pressurized water heaters. Among them, pressurized water heaters are more widely used because they can use the pressure of tap water to drive hot water supply or circulation. According to different manufacturing materials, solar water tanks can be divided into two types: enamel pressure water tanks and stainless steel pressure water tanks. The advantages of enamel pressure tank are low cost and corrosion resistance, but its disadvantage is that when hot water and cold water are exchanged, due to the inconsistent shrinkage coefficients of steel and enamel, it is easy to cause porcelain cracking and porcelain dragging, so the service life is short. General...

AI Technical Summary

Problems solved by technology

At present, for the pressure-bearing heat exchange tank of solar water heaters, the method of increasing the thickness of the material is usually used to solve the problem of service life, but this will lead to a significant increase in cost and weight. For wall-mounted solar water heaters, this defect is more obvious.

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