Thermostatic central water heater and control method

Abstract

The invention discloses a thermostatic central gas water heater which comprises a gas water heater body and a hot water circulating pipeline connected on the gas water heater body, wherein the gas water heater body comprises a heat exchanger, a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe are connected on the heat exchanger. The thermostatic centralgas water heater is characterized in that a communicating pipe is arranged between the water inlet pipe and the water outlet pipe, and a one-way stop valve is arranged on the communicating pipe; and acirculating pump and a water flow sensor are arranged on a pipeline between the connection point of the communicating pipe and the heat exchanger. During actual working, the thermostatic central gaswater heater controls the flow rate of circulating water by changing the rotation speed of the circulating pump, and further controls whether the gas water heater body is ignited or not, and respectively conducts greater circulation of preheating and short circulation of water mixing. Thus, the thermostatic central gas water heater avoids the poor bathing experience caused by cold and hot water after the central gas water heater without a temperature buffer container is opened at twice. The invention further provides a control method of the thermostatic central gas water heater.

Description

technical field [0001] The invention relates to the technical field of fluid heaters, in particular to a constant temperature central water heater and a control method. Background technique [0002] A better central hot water product should not only meet the user's demand for hot water immediately when using water, but also meet the more comfortable user experience that the water temperature remains constant throughout the bathing process. In order to improve the water temperature stability of the central hot water product and ensure the comfort of bathing, especially to solve the hot and cold outlet water temperature caused by the cold water flowing in during the second startup process, a temperature is generally installed at the outlet hot water end of the water heater. Buffer container, but this accessory not only increases the cost, but also complicates the waterway structure in the water heater, increasing the difficulty of production and installation. [0003] At pres...

AI Technical Summary

Problems solved by technology

In order to improve the water temperature stability of the central hot water product and ensure the comfort of bathing, especially to solve the hot and cold outlet water temperature caused by the cold water flowing in during the second startup process, a temperature is generally installed at the outlet hot water end of the water heater. Buffer container, but this accessory not only increases the cost, but also complicates the waterway structure in the water heater, increasing the difficulty of production and installation

[0003] At present, there are more and more central hot water products on the market, with rich and diverse functional configurations, and product competition is also increasing. In order to gain a place in the market, products have to innovate or reduce costs, so some manufacturers have canceled This temperature buffer container leads to a lot of poor product comfort, especially when the secondary boiling water in the bathing process will experience relatively large temperature fluctuations, which seriously affects the user experience.

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