vertical electric water heater

Abstract

Disclosed is a vertical electric water heater, which mainly consists of a liner and a heating device arranged in the liner. The heating device comprises a heat generation cover of which one end is provided with an opening, and at least one electric heating pipe sleeved in an inner chamber of the heat generation cover and closely fitted with the inner wall of the heat generation cover, with the heat generation cover being located on a vertical centre line of the liner. Further, the vertical centre line of the liner coincides with the centre line of the heat generation cover, and the electric heating pipes are uniformly distributed around the centre line of the heat generation cover. The heating device is located on the vertical centre line of the liner, so that an isothermal body which uses the heating device as a centre can be formed, thereby enabling the temperature differences among various mass points in water to be substantially reduced, so that the temperature uniformity of water in the liner is good; moreover, the arranged heat generation cover enables heat exchange area between the electric heating pipe and water to be increased, so that the temperature uniformity of water in the liner is further guaranteed, and the deposit formed in unit area on the heat exchange surface is reduced; in addition, the electric heating pipe is simple and convenient to replace and disassemble because of being sleeved in the heat generation cover.

Description

technical field [0001] The invention relates to an electric water heater, in particular to a vertical electric water heater. Background technique [0002] The anti-corrosion problem of the electric heating tube and the energy storage capacity of the liner are some of the key technical obstacles in the current storage-type electric water heater industry. The water storage type electric water heater includes horizontal electric water heater and vertical electric water heater, wherein the vertical electric water heater is to fix the electric heating tube to the bottom of the water storage liner through the flange or other components, and the electric heating tube is in direct contact with the water. This structure has the following disadvantages: [0003] 1. Due to the small heating area of ​​the existing electric heating tube, the heat per unit area of ​​the electric heating tube is high, causing the water around the electric heating tube to heat up rapidly and forming a larg...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the defects and deficiencies of existing vertical electric water heaters, the technical problem to be solved by the present invention is to provide a vertical electric water heater with good water temperature uniformity, less fouling per unit area on the heat exchange surface, and easy replacement and disassembly of electric heating tubes.

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