Electric heating unit and thermal-storage electric boiler with same

Abstract

The invention discloses an electric heating unit and a thermal-storage electric boiler with the same. The technical scheme element involves an electric heating unit, which comprises two oppositely disposed electric heating tube fixing plates and a plurality of electric heating tubes mounted between the two electric heating tube fixing plates; a plurality of mounting holes are formed in each of the electric heating tube fixing plates; limit components are mounted in the mounting holes; the limit components are accommodated in the mounting holes, and the mounting holes have cavities allowing the limit components to slip; meanwhile, elastic parts abut and are connected between the limit components and the mounting holes; and the electric heating tubes are removably connected in the limit components. The electric heating unit and the thermal-storage electric boiler with the same provided by the invention are easy to disassemble and maintain, simple in structure and convenient for operation.

Description

technical field [0001] The invention relates to a heat storage electric boiler, more specifically, it relates to a heat storage electric boiler which can be disassembled and installed with an electric heating unit. Background technique [0002] At present, the commonly used heat sources for heating systems or domestic hot water supply systems are coal-fired, oil-fired or gas-fired boilers, but they emit more pollutants and easily pollute the surrounding environment. In recent years, in order to avoid air pollution, there have been The heat storage electric boiler is installed, and the heat storage electric boiler can heat the water in the heat storage tank to 95°C through the circulating pump during the low price and low point of the night, and store it in the heat storage tank in the form of heat energy for use during peak power periods during the day , in order to achieve the purpose of completely avoiding peak hours or reducing electricity consumption during peak hours, a...

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Problems solved by technology

[0004] However, the thermal storage electric boilers on the market usually use electric heating tubes for the internal electric heating unit, and the electric heating unit usually determines the service life of the thermal storage electric boiler, because the electric heating unit is the core component of the thermal storage electric boiler. A large amount of heat needs to be generated, resulting in the shortest average service life of the electric heating unit compared to other components, so a new solution needs to be proposed to prolong the service life of the electric heating unit, thereby prolonging the service life of the thermal storage electric boiler

[0005] Of course, there are also solutions aimed at improving the service life of electric heating units in the prior art, such as the Chinese patent No. "CN2826886Y", which introduces a detachable PTC heater. The first shell and the second shell are relatively fastened and the corresponding two side arms are respectively fixed by fastening screws, and a cavity is formed in the middle part which is suitable for the shape of the PTC heating sheet, and the PTC heating sheet is arranged in the cavity and connected with the conductive sheet The connecting terminals are connected, insulating paper is arranged between the PTC heating sheet and the first shell and the second shell, and heat dissipation fins are respectively provided on the first shell and the second shell. Through this setting, the heating sheet can be easily replaced, but the The scheme still needs to disassemble the first shell and the second shell for replacement and installation during replacement, which is very troublesome

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