Primary heating type heat pump water heater and control method thereof

Abstract

The invention relates to the fluid heater using a heat pump and a control method of the fluid heater, in particular, a primary heating type heat pump water heater with a temperature control switching function and a three-water tank double-loop circulation water heating structure. The primary heating type heat pump water heater includes a heat pump unit and three water tanks; the first water tank and the second water tank are connected with a condenser through a three-way valve and a circulating pump, so that a first heating circulating loop and a second heating circulating loop of which the switching is controlled by the three-way valve can be formed; cold water inlets of the first water tank and the second water tank are connected with a cold water incoming pipeline through a first electromagnetic valve and a second electromagnetic valve; and hot water outlets at the tops of the first water tank and the second water tank are connected with a hot water storage tank through a three-way constant temperature hot water pipe, so that a first constant temperature water outgoing channel and a second constant temperature water outgoing channel which are controlled by the first electromagnetic valve and the second electromagnetic valve can be formed. The temperature control-switched three-water tank double-loop circulation water heating structure is adopted to product hot water, and outgoing water temperature can achieve set temperature and is not affected by incoming water flow, and the stability and continuity of the heating of hot water can be ensured.

Description

technical field [0001] The invention relates to a fluid heater utilizing a heat pump and a control method thereof, in particular to a primary heating heat pump water heater with a three-tank double-circuit circulating hot water structure with temperature control switching and a control method for the water heater. Background technique [0002] The current non-renewability of "fossil energy" such as coal, oil, and natural gas and the rapid reduction of global reserves have brought about a worldwide energy shortage. Coupled with the deteriorating ecological environment of the earth, it is necessary to protect the ecological environment and accelerate development and utilization. Renewable energy has become an urgent and arduous task for mankind. The booming Chinese economy and the rapidly growing demand for hot water have also been recognized by the country and society as energy-saving and environmentally friendly heat pump water heaters. The bright market prospects of energy-...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a one-time heating heat pump water heater, which can ensure that the temperature of the outlet water reaches the set temperature and is not affected by the flow rate of the inlet water. While ensuring the stability and continuity of heating hot water, it solves the problem There are technical problems of easy blockage and high failure rate caused by the water volume regulating valve during one heating process

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