Water heater

Abstract

The invention relates to the technical field of heat exchange equipment, and particularly provides a water heater. The water heater comprises a first heat exchanger, a domestic hot water heat exchangesystem and a flow-dividing controller; and an inlet end of the first heat exchanger communicates with a first return pipe, the inlet end of the domestic hot water heat exchange system communicates with an outlet end of the first heat exchanger, and the flow-dividing controller is arranged at the outlet end of the domestic hot water heat exchange system and is suitable for dividing the outlet endof the domestic hot water heat exchange system into two paths and controlling the flow of the two pipelines respectively, the outlet end of one pipeline communicates with the first water return pipe,and the outlet end of the other pipeline and the first water return pipe communicate with the heating loop. According to the water heater, the domestic hot water heat exchange system and the heating loop are connected in series, the flow-dividing controller can achieve simultaneous supply of domestic hot water and heating hot water without a three-way adjusting valve, cost is reduced, meanwhile, when the water heater provides the heating function, the domestic hot water system is in a standby state, and when the domestic hot water function is used, the flow direction of a hot water pipe does not need to be adjusted, the regulation and control on the flow-dividing controller are reduced, so that the fault rate of the flow-dividing controller is reduced.

Description

technical field [0001] The invention relates to the technical field of heat exchange equipment, in particular to a water heater. Background technique [0002] Water heater is a commonly used heat exchange equipment. Taking household gas wall-hung boilers as an example, most existing households use wall-hung boilers for both domestic hot water and heating water. Although this type of wall-hung boiler can provide heating and hot water And domestic hot water function, but can not provide heating hot water and domestic hot water at the same time. That is to say, when heating is enabled, the water heated in the main heat exchanger enters the heating circulation system, and domestic hot water cannot be produced at this time. And when domestic hot water is started, in order to ensure the priority supply of domestic hot water, the water heated in the main heat exchanger enters the domestic hot water circulation system, causing the heating system to cut off the supply. For families...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of high production cost and high failure rate of the regulating valve in the existing wall-hung boiler, the present invention provides a water heater that does not need to frequently adjust the flow direction of heating water, thereby reducing the cost of the wall-hung boiler and the frequency of use of the regulating valve

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