Constant-temperature water heater of bathtub

Abstract

The invention particularly relates to a constant-temperature water heater of a bathtub. The constant-temperature water heater comprises an electric heating system, and the electric heating system is provided with a hot water outlet and a connector. A three-way valve is arranged on the electric heating system, a first end opening of the three-way valve is communicated with the connector, a second end opening of the three-way valve is connected with a circulating water pump, and the circulating water pump is connected with an impurity filter in series. The constant-temperature water heater has the advantages that bath water is recycled through the circulating water pump, impurities are filtered out through the impurity filter, large impurities are filtered out effectively, and the aims of preventing blocking and saving water are achieved; whether the temperature of water with waste heat recycled is within the specified temperature value range or not is detected through a second temperature sensor, the bath water is recycled in time for secondary heating, and the constant-temperature state of the bath water is ensured; a nonmetal boiled water pipe and electric heating film combined structure is adopted in the electric heating system, and corrosion prevention and scale prevention are achieved.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a bathtub constant temperature water heater. Background technique [0002] The existing water heater heats tap water or well water, wherein the water heater adopts a copper pipe or a metal liner or a metal heater. When tap water or well water is used for a long time, scale will form on metal pipes or metal heaters. However, in the water heater industry, water with shower fluid or circulating water will not be used directly for heating, which will cause metal pipes and metal heaters to Quickly scales and corrodes the pipes, ultimately speeding up the failure of the water heater. [0003] In addition, most of the current water heaters have to adjust the water temperature and flow through the external manual mixing valve, but the adjustment of the water temperature and flow through the manual mixing valve is not stable, and it is difficult to adjust to the appropriate tempera...

AI Technical Summary

Problems solved by technology

When tap water or well water is used for a long time, scale will form on metal pipes or metal heaters. However, in the water heater industry, water with shower fluid or circulating water will not be used directly for heating, which will cause metal pipes and metal heaters to Quickly scales and corrodes pipes, ultimately speeding up water heater failure

[0003]In addition, at present, most water heaters have to adjust the water temperature and flow through external manual mixing valves, but it is not necessary to adjust the water temperature and flow through manual mixing valves. Stable, and it is difficult to adjust to a suitable temperature. When the water temperature of the inner tank continues to drop, the outlet water temperature will also drop. The only way to maintain the water temperature is to continuously adjust the ratio of the mixing water valve. It is very troublesome and inconvenient, and it is difficult to achieve a constant temperature. the goal of

[0004]Moreover, the purpose of constant temperature is achieved by adding new hot water, but the water consumption continues to increase, and the purpose of water conservation cannot be achieved

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