Electric heat tracing strip, solar water heater and method for controlling same

Abstract

The invention belongs to the technical field of solar water heaters, and discloses an electric heat tracing strip which comprises a shell, a circulating pump, a heater and a water outlet pipe. The circulating pump is positioned in the shell, the heater is connected to an output end of the circulating pump, the water outlet pipe is connected to an input end of the circulating pump, a water inlet pipe is connected with an end of the heater, and the heater and the circulating pump are connected to a control panel positioned in the shell. The invention further discloses a solar water heater with the electric heat tracing strip and a method for controlling the solar water heater. The method includes starting the circulating pump of the electric heat tracing strip for circulating water in a water tank when the temperature of water in the water tank of the solar water heater does not reach first preset temperatures; starting the heater of the electric heat tracing strip in circulating procedures; heating the water in the water tank until the temperature of the water reaches the first preset temperatures. The electric heat tracing strip, the solar water heater and the method have the advantages that the solar water heater is provided with the electric heat tracing strip which is communicated with the water tank in a circulating manner, the water in the water tank can be circulated andheated, and accordingly the requirements of users can be met.

Description

technical field [0001] The invention relates to the technical field of solar water heaters, in particular to a solar companion, a solar water heater and a control method. Background technique [0002] Solar water heaters are greatly affected by the weather and cannot supply hot water 24 hours a day. For this reason, a combination of fast heating water heaters and solar energy has appeared on the market, and the water flowing out of the solar water heater can be heated to bathing temperature by secondary heating. However, this fast heating The combination of water heater and solar energy has the following problems: [0003] First: Affected by the load of the power line in the user's home, the maximum power of most fast-heating water heaters is 3000W, but when the water temperature of the solar water heater tank is low, the water temperature after secondary heating by the 3000W fast-heating water heater cannot reach bath temperature. [0004] Second: There will be a large am...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a solar companion, a solar water heater and a control method to solve the problems that the existing solar water heaters cannot meet the user's requirements, and the water temperature in the external pipeline and the water tank is low and easy to freeze.

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