A kind of non-
metal inner container for
water heater, including inner container matrix and
fiber layer, the inner container matrix is opened with container mouth, the edge of the container mouth extends outward and forms container mouth
flange protruding from the inner container matrix, the
fiber layer is wrapped in the outer surface of the inner container matrix, the outer edge of the cross section of the container mouth
flange at any position away from the container mouth does not exceed the outer edge of the cross section of the container mouth
flange at the location of the container mouth.The technical scheme provided by the utility model has the following advantages compared with prior art:low cost, simple and ingenious structure, simple process steps and low process difficulty, easy and fast
assembly, strong
stress resistance, strong ability to adapt to repeated expansion and contraction of inner container, long service life.