Hot water circulation device with drying function and control method

Abstract

The invention discloses a hot water circulation device with a drying function. The hot water circulation device with the drying function comprises a circulation pipe, a first stop valve, a second stopvalve, a first branch pipe, a second branch pipe, a drying rack, a direct current variable speed water pump, a temperature sensor and a main controller. The first stop valve and the second stop valveare correspondingly arranged at two ends of the circulation pipe, and the first branch pipe and the second branch pipe are connected with the circulation pipe between the first stop valve and the second stop valve. Inlet and outlet ends of the drying rack are correspondingly connected with the first branch pipe and the second branch pipe. The direct current variable speed water pump and the temperature sensor are correspondingly arranged at the first branch pipe or the second branch pipe. The main controller is connected with the first stop valve, the second stop valve, the direct current variable speed water pump, and the temperature sensor. The hot water circulation device with the drying function has the advantages of good drying effect and no start of the water heater when the cold water is opened. The hot water circulation device with the drying function further provides a control method for the hot water circulation device.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a hot water circulation device with a drying function and a control method. Background technique [0002] In recent years, various gas water heaters with preheating functions or supporting hot water circulation devices have appeared on the market, which can realize the central hot water system, and realize the instant heating function of gas water heaters to a certain extent. [0003] Central gas water heaters are currently divided into two types: three-pipe installation (with return pipe) and two-pipe installation (without return pipe). Most families do not have the awareness of central hot water when decorating their houses. Considering the cost of decoration, they generally do not choose to install return water pipes. Therefore, most of the existing household central hot water is installed with two pipes, and hot water is realized with the help of one-way valves and cold...

AI Technical Summary

Problems solved by technology

But this technology can not solve the phenomenon of turning on the cold water heater. In addition, this technology only relies on the water temperature of the preheating pipeline to heat the drying rack. Since the preheating water temperature is generally below 48 degrees, the effect of the drying rack is not ideal (and There are very few users who preheat to 48 degrees)

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