Hot water supply system

Abstract

The invention discloses a hot water supply system, and relates to the technical field of hot water supply. The hot water supply system comprises a water heater, a three-way valve, a water return pipeand a booster pump, wherein the tail end of a water inlet pipe of the water heater communicates with a first valve port of the three-way valve, a second valve port of the three-way valve communicateswith a water outlet pipe of the water heater, one end of the water return pipe communicates with the water outlet pipe of the water heater, and the other end of the water return pipe communicates witha third valve port of the three-way valve, and the booster pump is arranged at the tail end of the water inlet pipe. In the hot water supply system, by arranging the water return pipe, cold water inthe water outlet pipe of the water heater can return to the water heater for heating, and the purpose of instant opening and instant heating can be achieved; the water inlet pipe, the water outlet pipe and the water return pipe of the water heater are connected through the three-way valve, the booster pump is arranged at the end, close to the three-way valve, of the water inlet pipe, and when thebooster pump works, due to the fact that the pressure is large at the end, connected with the water inlet pipe, of the three-way valve, the backflow phenomenon does not occur under the action of the pressure difference by the water return pipe, and the purpose of increasing flow is achieved.

Description

technical field [0001] The invention relates to the technical field of hot water supply, in particular to a hot water supply system. Background technique [0002] Due to the low tap water pressure and unstable water pressure in some urban communities or rural areas, it is difficult for gas water heaters to start normally. In addition, some users of gas water heaters have a long pipeline from the tap to the gas water heater. When using hot water, they need to drain the cold water in the pipeline before using hot water, which not only wastes water resources, but also brings inconvenience to users. [0003] In order to solve the above problems, there are instant on-off gas water heaters and pressurized gas water heaters on the market. Existing instant-on and hot gas water heaters generally need to install a special "return water pipeline", but for renovated houses, there is generally no return water pipeline, and a hydraulic control check valve can be used to pass the cold wat...

AI Technical Summary

Problems solved by technology

[0004] 1. After the booster pump is started, the water in the outlet pipe will return to the water heater through the return water pipe or the cold water pipe, and the supercharging cannot be really realized;

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