Energy-saving hot water circulation system constructed from double-layer pipes

Abstract

An energy-saving hot water circulation system constructed from double-layer pipes comprises a hot water main pipe fitting and a hot water branch pipe fitting; the hot water main pipe fitting and the hot water branch pipe fitting each comprise a hot water inner pipe and a hot water outer pipe; and the hot water inner pipes are connected to the inner sides of the hot water outer pipes in a sleeved mode; one end of the hot water inner pipe in the hot water branch pipe fitting communicates with the hot water inner pipe in the hot water main pipe fitting, and a hot water control valve is arranged at the other end of the hot water inner pipe in the hot water branch pipe fitting; one end of the hot water outer pipe in the hot water branch pipe fitting communicates with the hot water outer pipe in the hot water main pipe fitting, and the other end of the hot water outer pipe in the hot water branch pipe fitting and the hot water inner pipe in the hot water branch pipe fitting are in a sealed state; a water return through hole is formed in the side wall of the hot water inner pipe in the hot water branch pipe fitting, the hot water inner pipe in the hot water branch pipe fitting communicates with the hot water outer pipe in the hot water branch pipe fitting through the water return through hole, and a water return control valve is arranged in the water return through hole.

Description

technical field [0001] The invention relates to the field of daily life, in particular to an energy-saving hot water circulation system constructed of double-layer pipes. Background technique [0002] The hot water supply in traditional residential households is generally directly led out of the hot water pipe from the water heater. Because there is a certain space difference between the hot water usage places such as bathrooms, laundry rooms, and kitchens and the installation location of the water heater, it is necessary to empty the pipe before using hot water that reaches a specific temperature. The cold water retained in the road has defects such as long emptying time of cold water and waste of water resources. Therefore, in scenes with complex water pipe networks such as large suites, villas, high-end hotels, and commonly used public buildings, hot water circulation pumps are often used to form a hot water circulation system. The system generally consists of cold water...

AI Technical Summary

Problems solved by technology

The system generally consists of cold water pipeline 1, hot water pipeline 2 and return water pipeline 3 (such as figure 1 As shown), the hot water pipeline 2 and the return water pipeline 3 form a circulation pipeline; although it can solve the defects of waste of water resources and inconvenient use of hot water caused by cold water remaining in the pipe, there is always heat between the hot water pipeline and the surrounding environment. Exchange, causing a lot of energy waste

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