Electric water heater

Abstract

The invention discloses an instant electric water heater with a water storage device. The electric water heater is characterized in that the electric water heater comprises an instant heating device, the water storage device, a temperature control valve, a first waterway flow direction control valve and a controller, a first water inlet and a first water outlet are formed in the instant heating device, a second water inlet and a second water outlet are formed in the water storage device, the temperature control valve comprises a fifth water inlet, a sixth water inlet and a mixed water outlet, and the first waterway flow direction control valve comprises a third water inlet, a third water outlet and a fourth water outlet. The electric water heater has the advantages of low heat insulating and standby power consumption, less cold hot water mixed loss, high hot water utilization rate, quick heating, low heating power and easiness in popularization and promotion.

Description

technical field [0001] The invention relates to the field of water heater manufacture, in particular to an electric water heater. Background technique [0002] my country is a big country in the production and consumption of electric water heaters. Statistics show that in 2015 alone, the sales volume of electric water heaters in my country reached more than 18 million units. At present, there are two types of electric water heaters on the market, namely cylindrical water storage electric water heaters and instantaneous water heaters, among which cylindrical water storage electric water heaters are the main ones, accounting for more than 90% of the total sales. . The cylindrical water storage type electric water heater is composed of an inner tank, an electric heater arranged in the inner tank, a temperature sensor, an insulating layer wrapped outside the inner tank and a controller. The heating power of the electric heater is Usually 2000W-3500W, the volume of the inner ta...

AI Technical Summary

Problems solved by technology

[0003] The existing cylindrical water storage type electric water heater mainly has the following three problems: 1, the heat preservation standby power consumption is large, and when the water temperature in this cylindrical water storage type electric water heater is above 40 degrees Celsius, the Cool down by heat dissipation. In order to keep the water temperature above 40 degrees Celsius, this cylindrical water storage electric water heater needs intermittent power consumption to heat up the water temperature.

2. The mixing loss of cold and hot water is high, and the utilization rate of hot water is low. When the user uses hot water, the hot water in the cylindrical water storage electric water heater flows out of the inner tank from the hot water outlet of the inner tank, and at the same time, the cold water Enter the inner tank from the cold water inlet of the inner tank, and the cold water newly entering the inner tank is mixed with the hot water heated to the set temperature in the original inner tank

It can be seen from the above description that only part of the hot water heated to the set temperature in the inner tank can be used by the user, and the other part is consumed by mixing with the cold water entering the inner tank. When the water temperature is lower than 40 degrees Celsius, usually the user cannot take a bath

3. Slow heating speed

However, due to the high power of this instant electric water heater, there are high requirements for supporting wires, electric meters, and air switches. At present, the electricity infrastructure of most households in my country cannot safely carry high-power electric water heaters above 8000W. capacity, so the promotion of this high-power instant electric water heater is restricted

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