Autocontrol multi-channel central water supply and storage type electric water heater

Abstract

The invention relates to a auto-control multi channel central water supply and storing electric water heater which consists of shell, inner core, water inlet and outlet tube, water outlet tube, electric heating tube and its control circuit. Concatenate a electric control valve between the water inlet tube and the inner core, and a flow sensor in the heat water outlet tube in each multi channel water supply channel point. Air conducting overflow tube and electric control valve are also set on the inner core or the water outlet tube. The product has got all advantages of the sealing and opening water heater while auto release various pressing forces on the inner core which totally eliminates the metallic phase corruption due to kinds of pressing forces and prevents the core from working under long fatigue state greatly lengthening its service life. It can also be used as separate outlay components facilitating refitting existing sealing water heating.

Description

technical field [0001] The invention relates to an automatic control multi-channel central water supply and storage type electric water heater. Background technique [0002] More and more experiments and market information show that an important reason for the leakage of the inner tank of the most commonly used closed water storage electric water heater is that the inner tank is subjected to the water pressure of tap water, the steam pressure generated during heating, and the inner tank after heating. The water in the tank is affected by the pressure formed by thermal expansion and other aspects. The pressure of the inner tank leads to continuous changes in shape, destroys the metallographic structure of the inner tank material, and makes the tank body in a state of fatigue for a long time, making the closed water storage battery The life expectancy of water heaters is shortened, which has a great impact on the production, sales and use of products. [0003] The Chinese pat...

AI Technical Summary

Problems solved by technology

However, this patent ignores a problem that cannot be underestimated: due to the electromagnetic valve set between the water inlet and the inner tank in this patent, the outlet pipeline is closed when hot water is not used, which will cause the electric water heater to heat up when it is working. The steam pressure generated and the pressure formed by the thermal expansion of the water in the liner after heating cannot be released, and the goal of "constant and controllable pressure" described in the patent cannot be achieved.

At this time, the solenoid valve 3 is turned on for water supply, and the solenoid valves 7 and 10 are turned off, and the electric water heater becomes the same as an ordinary closed electric water heater, which bears the tap water pressure and the steam pressure generated by the heating of the inner tank, as well as the heating of the inner tank after heating. The pressure formed by the thermal expansion of the water cannot meet the requirements of the "low-pressure closed tank" described in the patent, and will have adverse effects on the inner tank of the water heater

2. According to the accompanying drawings of the instruction manual, all the cold water pipes in the multi-channel water supply of the electric water heater must be connected after the pressure switch 4. If the laying of hot and cold water pipes is not compatible, special cold water pipes must be re-laid separately, which increases the cost of pipe installation materials and increases the difficulty of installation

[0005] To sum up, the above two patented technical solutions have not fundamentally solved the defects inherent in the inner tank of the closed electric water heater, such as bearing various pressures, etc.

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