One-time heating heat pump water heater outlet water temperature control device and temperature control method

Abstract

The invention discloses a temperature control device for yielding water of a single-heat type heat pump water heater. A pipeline is connected with a heat storage water tank, a tee-joint proportioning valve, a heating water heat exchanger, a water pump and a yielding water constant temperature control module connected with the heat storage water tank, wherein the yielding water constant temperature control module is connected with an ambient temperature probe, and controls the switching on and off of the tee-joint proportioning valve; and an opening in the A-B direction of the tee-joint proportioning valve is communicated with a water inlet end, and an opening in the B-C direction is communicated with the heating water heat exchanger. In addition, the invention also discloses a temperature control method, the temperature of the heat storage water tank, the ambient and the heating water heat exchanger are subjected to sampling detection, and according to different ambient temperatures, different yielding water temperature values can be set, the switching on-off degree of the tee-joint proportioning valve is adjusted, the water feeding amount is adjusted by the temperature control regulating valve, so that the yielding water temperature of the heating water heat exchanger can reach the set value. The temperature control device can run with safety, stability and high efficiency, and meanwhile, the engineering installation is simple, the cost is low, and the supplied hot water is constant.

Description

technical field [0001] The invention relates to a heat pump water heater, in particular to a heat pump water heater temperature control device and a temperature control method. Background technique [0002] Air source heat pump hot water products are more and more recognized by the society because of energy saving and environmental protection. Now air source heat pump water heaters on the market mainly include one-time heating, circulation heating, and static heating. The one-time heating heat pump water heater has been widely promoted in the market south of the Yangtze River because of its many advantages such as simple installation, small engineering water pipe diameter, low engineering cost, stable hot water without cold water entering the hot water tank. However, when the primary heating heat pump water heaters currently on the market are used in northern regions where the ambient temperature is low, because the ambient temperature is low, the inlet water temperature is ...

AI Technical Summary

Problems solved by technology

However, when the primary heating heat pump water heaters currently on the market are used in northern regions where the ambient temperature is low, because the ambient temperature is low, the inlet water temperature is low, and the heating capacity is also low, but the outlet water temperature must still be maintained at 55 degrees, so the water flow is very small, resulting in poor condensation effect and low coefficient of performance. At the same time, because the condensation effect is not good, the compressor runs in a state of high exhaust and high pressure, which is easy to damage the compressor

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