Water heater

Abstract

The invention discloses a water heater, which comprises a shell, a foam layer, an inner tank, a water inlet insulating pipe and a water outlet insulating pipe, the outer shell is provided with a water inlet hole and a water outlet hole, and the water inlet insulating pipe includes a The water inlet pipe, the inner pipe connected to the water inlet pipe in the inner tank, and the casing sleeve set outside the inner pipe, the water inlet pipe and the inner pipe are connected through the screw head, and a gap is formed between the inner pipe and the casing pipe, mainly The characteristic is that the surrounding wall of the casing is provided with distributed water outlet holes, and the gap between the lower end of the casing and the inner pipe is provided with a positioning boss, which can not only strengthen the casing, but also block the impact of water on the inner wall of the inner tank, so that Water can enter the liner from the distributed water outlet hole after the gap relieves the impact force; the invention provides a plurality of positioning ribs on the screw heads of the water inlet insulating pipe and the water outlet insulating pipe corresponding to the water inlet and outlet holes of the shell, avoiding the water inlet and outlet pipes and the shell The eccentricity of the inlet and outlet holes.

Description

technical field [0001] The invention relates to a water heater, in particular to a water heater with a water inlet insulating pipe capable of alleviating the impact force of water inlet and positioning the inner container. Background technique [0002] At present, with the improvement of people's living standards, water heaters have entered thousands of households. Although there are many types of water heaters, most of them have water storage tanks and water inlet and outlet pipes. However, there are still many problems in the existing water inlet pipes. First: The water injection process of the existing closed water storage water heater is: cold water flows from the water inlet 8' of the water inlet pipe along such as figure 1 The shown waterway (into the cold water direction shown in the figure) enters the water inlet pipe 4', then comes out from the water inlet pipe outlet 9' and enters the inner tank 3'. Due to the pressure of the water inlet (generally tap water) (the...

AI Technical Summary

Problems solved by technology

Then inject foaming material (liquid) into the foaming layer 2' between the outer shell 1' and the inner tank 3', and the mixed foaming material will expand rapidly in a short time. Obviously, the existing process determines the foaming The material can only be injected into the foam layer from one direction, which causes the unbalanced force on the barrel and the lower head of the inner tank during the foaming process, so the position of the inner tank 3' will shift. When the foam material solidifies Afterwards, shell inlet hole 11 ', outlet hole 10 ' and inlet pipe 4 ', outlet pipe 5 ' just will not concentric (as figure 2 As shown), this will cause considerable trouble to the subsequent process, for example, the electrode on the water inlet insulation pipe will be cut by the shell and the magnesium rod cannot be installed, the display cover of the anti-electric wall and the water inlet and outlet insulation pipes are not properly matched, and are not in place. Directly below the water heater, the after-sales service cannot remove the magnesium rod when changing the magnesium rod and other problems.

Cause some inconvenience to production and after-sales maintenance

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