Heat pump heating water supply device and method

Abstract

The invention relates to the technical field of heat pump heating, in particular to a heat pump heating water supply device and method. An existing hot water supply mode for coping with large-flow water use usually adopts that a heating unit is additionally arranged, hot water temperature fluctuation is large, and user experience is poor. In order to solve the problem, the heat pump heating water supply device is adopted. A first water tank and second water tanks are arranged to form three water supply loops, and temperature sensors are arranged in the first water tank and the second water tanks; and the system selectively executes heating or water supply of the first loop, the second loop or the third loop based on feedback data of the temperature sensors. The first loop, the second loop and the third loop can be used for heating or supplying water independently. According to the heat pump heating water supply device, signals of the temperature sensors can be received through a central control system, and an electromagnetic valve is controlled to switch among the three water supply loops. Through water supply cooperation among the three loops, more stable hot water supply is provided for users.

Description

technical field [0001] The invention relates to the technical field of heat pump heating, in particular to a heat pump heating water supply device and method. Background technique [0002] At present, in hotels, restaurants, schools, factories, bathing centers and other places, due to the characteristics of large water supply and sudden change in water supply, large-capacity water storage tanks are generally widely used to supply hot water in order to meet supply requirements in time. In the case of normal water use, the tonnage of the water storage tank selected in the above places can meet the supply of hot water. When the user stops using water, the optional heating unit will heat the new cold water, and the heated hot water will be sent to the water storage tank. to store. In the case of normal water use, the large-capacity water storage tank can ensure that the water temperature inside it is not lower than a certain temperature. However, it is precisely because of the...

AI Technical Summary

Problems solved by technology

Because the flow control range and flow control accuracy of the ordinary single flow control valve are limited: the flow control valve with a large flow control range has low flow control accuracy, the water volume per unit opening changes greatly, and the opening-flow rate is linear. In the case of small outlet water flow, it is difficult to achieve fine adjustment, and the outlet water temperature fluctuates greatly; the flow control valve with high flow control accuracy has a small flow control range, and the change of water flow per unit opening degree is small, which cannot meet the new requirements. Variation range and adjustment speed of cold water flow

Since there are usually multiple water points on the user side, the hot water consumption varies from time to time and the range of water consumption is also large. Under a single flow control valve, the flow of new cold water cannot be matched with the power of the heating unit in time and accurately so that after heating The hot water is at a stable target temperature. Due to the limitation of precision adjustment, the temperature of the hot water used by the user side will fluctuate to a certain extent during the adjustment process of the single flow control valve, and even hot and cold may appear, resulting in poor user experience.

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