Three-way electricity guard wall structure and manufacturing method thereof

Abstract

The invention discloses a three-way electricity guard wall structure for a water heater. The structure comprises a first water pipe and a second water pipe which are integrated respectively, wherein the pipe walls of the water pipes are made of insulating materials; a grounding copper pipe connected with a ground wire is sleeved in the left side of the first water pipe; the second water pipe is sleeved in the grounding copper pipe; the first water pipe is longer than the second water pipe; the grounding copper pipe is provided with an exceeding section exceeding the second water pipe at the right end of the second water pipe, and the exceeding section divides the first water pipe into a first part at the left side of the exceeding section and a second part at the right side of the exceeding section; the exceeding section is contacted with the water flow only at the exceeding section; and because of the lengths of the first water pipe and the second water pipe, the intensity of the current after passing through the second part of the first water pipe and the intensity of the current after passing through the second water pipe are less than 5mA. Moreover, the invention also discloses a manufacturing method of the three-way electricity guard wall. Good insulating performance and grounding performance of the grounding copper pipe are ensured by uniform injection molding, smoothness of the water flow pipes is ensured, and the water flow of the inner pipe is improved.

Description

technical field [0001] The invention relates to an anti-electric wall structure for a water heater and a manufacturing method thereof, in particular to a three-way anti-electric wall structure and a manufacturing method thereof. Background technique [0002] Current water heaters have taken many protective measures to deal with electric leakage to ensure personal safety, such as armored heating tubes, leakage switches, reliable grounding, etc., and national safety standards have also adopted anti-electric wall technology. [0003] The anti-electric wall technology mainly uses the principle of water resistance to achieve isolation. Insulated pipelines of a certain length and cross-sectional area are respectively set at the inlet and outlet of the electric water heater, thereby forming a large water resistance. When an accidental leakage occurs, the water resistance makes the leakage current attenuate to a small level, thereby achieving electrical isolation. purpose without c...

AI Technical Summary

Problems solved by technology

Although the anti-electricity wall structure can realize the three-way anti-electricity function, that is, the ground wire is good, the water heater leaks; the ground wire is empty or bad, the water heater leaks or other household appliances leak. There are still many problems: after the outer wire insert 6 is connected to the joint structure 5, it is easy to cause water leakage at the joint gap under the condition of high temperature and high pressure water; It is convenient to enlarge, and the position connected to the ground wire is easy to cause slippage, and the production pass rate is difficult to control; in the actual injection molding process, the integral injection molding of the first water pipe 1, the grounding copper column 4 and the second water pipe 2 inevitably appears uneven As a result, the 4 grounding copper columns are not filled or leaked, and the insulation is difficult to guarantee, resulting in the scrapping of the entire anti-electric wall; The road is blocked, and the welding fails to meet the strength requirements, resulting in the breakage of the anti-electric wall and other defects; because the copper column embedded in the middle of the pipeline cannot be in contact with the entire circle of water, there is a certain degree of imperfection in the standard compliance, which leads to The entire waterway is not a full circle structure, the water flow resistance is relatively large, and the flow rate under the same cross-sectional area is much smaller than that of a full circle waterway

Images