Electric water heater

Abstract

The invention discloses an electric water heater. The electric water heater comprises a tank, a heat isolation layer and a controller. The electric water heater is characterized by further comprisingtwo or more inner containers, a connecting pipe and an instantaneous hot water heating device. A first water inlet and a first water outlet are formed in each inner container; the instantaneous hot water heating device comprises an instantaneous hot water pipe and an instantaneous hot electric heater, and a second water inlet and a second water outlet are formed in the instantaneous hot water pipe; the first water inlet in the inner container at the head end is communicated with a cold water inlet pipeline, and the first water outlet in the inner container at the head end is communicated witha connecting pipe; the connecting pipe is communicated with the first water inlet in the second container, the two or more containers are communicated with each other in series in this way, the firstwater outlet in the inner container at the tail end is communicated with the second water inlet, and the second water outlet is communicated with a hot water outlet pipeline. The electric water heaterhas the advantages of being thin in body, small in size, high in heating speed, low in daily power consumption, high in hot water utilization rate and low in heating power.

Description

technical field [0001] The invention relates to the field of home appliance manufacturing, in particular to an electric water heater. Background technique [0002] With the development of the economy and the improvement of people's living standards, the popularity of electric water heaters in our country has been very high. According to statistics, the annual sales of electric water heaters in my country can reach more than 18 million units, of which cylindrical water storage type single-cell electric water heaters are the main ones, accounting for more than 90% of the total sales. The existing cylindrical water storage type single tank electric water heater mainly has the following four problems: [0003] 1. Large size, there is a risk of falling. Cylindrical water storage type single-tank electric water heaters are mostly installed above the user's bathroom. The body of this type of water heater protrudes from the wall and has a large thickness, so users usually feel dep...

AI Technical Summary

Problems solved by technology

[0004] Second, the heating speed is slow, and the user waits for a long time

[0005] 3. Heat preservation and heat dissipation, large standby power consumption

[0006] 4. Low utilization rate of hot water and serious waste of electric energy

However, there are two problems with this instant electric water heater on the market. One is that the heating power is relatively high, and there are high requirements for supporting wires, electric meters, and air switches. At present, the electricity infrastructure of most households in my country cannot Ability to safely carry high-power electric water heaters above 8kW; Second, because there is no water storage liner, the outlet water temperature fluctuates with tap water pressure changes

Therefore, the popularization and popularization of this high-power instantaneous electric water heater is restricted.

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