Waterway system and control method of plate exchange type gas heating water heater

Abstract

The invention discloses a waterway system and a control method of a plate exchange type gas heating water heater. The waterway system is characterized in that the waterway system comprises a heat exchanger, a plate heat exchanger, a main control panel, a water outlet pipe and a return water pipe, the two sides of the heat exchanger are respectively provided with a water outlet and a return water port, the water outlet is connected with the water outlet pipe, the return water port is connected with the return water pipe, the other end of the return water pipe is connected with a first water pump, a three-way valve and a second water pump which are connected in series, the return water pipe is connected with the three-way valve through the second water pump, and the other two ports of the three-way valve are respectively connected to the plate heat exchanger and to a heating return water joint through the first water pump; and the main control panel is provided with a water pump controlcircuit I and a water pump control circuit II which are independent of each other, the water pump control circuit I is connected with and controls the first water pump, and the water pump control circuit II is connected with and controls the second water pump. The water outlet pipe of the heat exchanger is provided with an outlet temperature sensor and an electric three-way valve, the electric three-way valve is respectively connected to the plate heat exchanger and a heating water outlet joint, and the main control panel is electrically connected with the electric three-way valve. The waterway system is simple in structure and convenient to operate.

Description

technical field [0001] The invention relates to the technical field of gas appliances, and relates to a waterway system and a control method of a plate-replacement gas heating water heater. Background technique [0002] Due to the large heating area of ​​villas or large-scale users, when choosing a gas heating water heater as a heating source, it is often necessary to purchase a high-power gas heating water heater product, and the product must also have the characteristics of providing large flow and large head . Therefore, under normal circumstances, two water pumps of the same specification will be installed in the water circuit of the high-power gas heating water heater. The two water pumps are connected to the same control circuit, and the two water pumps start and stop at the same time. In the bathroom state, one water pump can meet the circulation flow demand. At this time, if both water pumps are turned on, it will not only waste electric energy, but also shorten th...

AI Technical Summary

Problems solved by technology

In the bathroom state, one water pump can meet the circulation flow demand. At this time, if both water pumps are turned on, it will not only waste electric energy, but also shorten the effective service life of the water pump; when one of the water pumps is stuck or damaged, it cannot be effectively monitored and monitored. Timely error reminder, affecting the heating effect of the user

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