A constant temperature and constant pressure hot water control device for emptying cold water and its control method

Abstract

The invention relates to the technical field of water heaters, in particular to a cold-water-emptying constant-temperature and isopiestic-pressure hot water control device and a control method thereof. A water storage tank, a three-way valve, a water pump, a temperature sensor and a flow sensor are arranged on a water outlet pipeline of a water heater, a water level sensor is arranged at the position of the water storage tank, a flow sensor, a temperature sensor and a check valve are arranged at the position of a hot water pipe of a water consumption point, a flow sensor, a flow control valve and a temperature sensor are arranged at the position of a cold water pipe, temperature and flow data are acquired and transmitted to a processor unit, the processor unit controls the working states of all elements, and therefore the aim of emptying a retention water body in the water outlet pipeline after the water heater is used and storing the retention water body in the water storage tank to be used for the next time of water mixing is achieved; and meanwhile, the processor unit controls work of all the elements, and the water temperature and the water amount at the water consumption point are kept stable. The cold-water-emptying constant-temperature and isopiestic-pressure hot water control device and the control method are simple in structure, water and gas are saved, the water consumption point can directly discharge hot water, the problem that in the prior art, the water temperature of discharged hot water is instable is also solved, and user experience is improved.

Description

technical field [0001] The invention relates to the technical field of hot water control devices, in particular to a constant temperature and constant pressure hot water control device for emptying cold water and a control method thereof. Background technique [0002] When a water heater is in use, it generally takes care of multiple hot water supply points. For example, if a water heater is used in a home, it is connected to two types of hot water supply points, the kitchen and the bathroom; the barbershop supplies multiple shampoo showers at the same time. However, when using for a long time at intervals, due to the low temperature of the stagnant water in the outlet pipe of the water heater, it is necessary to drain this part of the cold water before starting to supply hot water, resulting in poor user experience and unnecessary water waste, which not only Puzzled water heater users, also contrary to the current concept of water conservation. [0003] In order to solve t...

AI Technical Summary

Problems solved by technology

However, these methods and devices have disadvantages such as bulky size, huge renovation project, high installation cost, etc., and are not suitable for popularization and application.

Moreover, water heaters improved by these methods are prone to unstable water temperature and water volume, and it is difficult to achieve the purpose of intelligently controlling water volume and water temperature, and users cannot enjoy comfortable hot water.

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