Electrothermic heater

Abstract

The invention relates to an electrothermic heater, comprising a casing, and the casing is provided with a heating device, a circulating device and an antiswelling device, wherein, the two ends of the circulating device are respectively connected with the heating device and the antiswelling device. In the invention, the liquid is added through a liquid adding opening which is arranged at the upperend of an antiswelling barrel, and the liquid is transmitted to the heating device through a circulating pump; the liquid is heated by the heating device and enters a discharge pipe, and a liquid outlet end of the discharge pipe is connected with a liquid inlet end of an external heat dissipation device; after heat dissipation is carried out on the liquid by the heat dissipation device, the liquid flows back to the antiswelling barrel through the liquid inlet pipe which is connected with the liquid outlet end of the heating device; the liquid is circulated to the heating device through a circulating pump to finish a circulation. The antiswelling barrel has large enough space, which can effectively prevent the problem of unsmooth liquid circulation in the whole loop owing to the volume expansion after the liquid is heated to expand, thus greatly improving thermal efficiency and saving energy. The air generated in the heating and circulating processes can be discharged through the gas outlet valve, thus realizing the discharge of gas conveniently.

Description

technical field [0001] The invention relates to a heating device, in particular to an electric heating heater. Background technique [0002] At present, indoor heating has been developed from radiator to floor heating, which is to lay disc-shaped pipes in the floor and use hot water for heating. Floor heating has the following advantages: 1. Only 45-55 degrees of hot water is needed, with high thermal efficiency and less heat loss. Compared with the original radiator heating form, it can save energy by more than 30%; 2. Good heat storage performance, heat stop 3- After 4 hours, there is still preheating radiation; 3. The room temperature gradually decreases from bottom to top, making people feel the comfort of warm feet and cool top, without causing convection of dirty air, and the room is clean. At present, some of the hot water sources for floor heating use centralized pipeline heating, and some use single-family gas heating. The disadvantage is that due to the use of wa...

AI Technical Summary

Problems solved by technology

Its disadvantages are: due to the water circulation, it is easy to scale in the heat dissipation coil, resulting in uneven heat dissipation or blocked pipes, reducing heat dissipation performance

The disadvantage of the above structure is that, due to the expansion of the liquid when heated, the volume of the liquid in the entire circuit increases, and the liquid in the liquid filling port at the upper end of the liquid inlet pipe will also overflow, the liquid cannot flow or the flow becomes slow, and the heating thermal efficiency is greatly reduced.

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