Cold water recycling system of water heater

Abstract

The invention discloses a cold water recycling system of a water heater. The cold water recycling system of the water heater comprises the water heater, a water mixing valve, a reversing device and awater storage device, wherein the water heater comprises a cold water recycling channel and a cold water recycling channel. According to the cold water recycling system of the water heater, when the water heater is started, residual cold water in the hot water pipe of the water heater can be stored in the water storage device through the cold water recycling channel, the water in the water storagedevice can flow through the cold water recycling channel and then flows back into the cold water pipe of the water heater by using the channel to recycle the cold water, therefore, the cold water recycling system of the water heater can realize zero cold water when the water heater discharges the water without arranging a water pump, an H-shaped valve and a water return pipeline, not only can protect the safety of other electric appliances sharing a cold water pipeline, but also can ensure the high utilization rate of fuel gas, and the cost of the cold water recycling system is lower.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a cold water recycling system for water heaters. Background technique [0002] At present, the "zero cold water" products of water heaters on the market are all pre-heated by setting a water pump to circulate the water in the hot water pipe of the water heater, thereby achieving "zero cold water". However, the installation of the water pump needs to include the matching pipe fittings and the like for the water pump, which will result in higher costs for the water heater. And because the water pump is always working, unnecessary parts of the waterway must be heated during the cycle preheating process, and the exhaust gas is not energy-saving. [0003] In addition, 70% of users do not have return water pipes, so these users use cold water pipes to build a circuit through the "H valve". During the cycle, hot water will flow through the cold water pipes. There will be hot wat...

AI Technical Summary

Problems solved by technology

However, to set up the water pump, it is necessary to include the pipe fittings matched with the water pump, etc., which will lead to higher cost of the water heater

And because the water pump is always working, unnecessary parts of the waterway will be heated during the cycle preheating process, and the exhaust gas will not save energy.

[0003] In addition, 70% of users do not have return water pipes, so these users use cold water pipes to build circuits through "H valves". During the cycle, hot water will flow through the cold water pipes. There will be hot water flowing out, which may burn the user. For users who are connected to other aquatic products such as water purifiers, if the water temperature of the cold water pipe exceeds 38°C, it may directly cause damage to the RO membrane of the water purifier. "H valve" or similar parts are used to construct the circuit, the structure of the whole machine is complicated, and there are many installation procedures

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