Air source heat pump system and control method thereof

Abstract

The invention discloses an air source heat pump system which comprises a compressor, a first heat exchanger, a throttling device and a second heat exchanger, the second heat exchanger is used for preparing cold / hot water, the cold / hot water prepared by the second heat exchanger is conveyed into an indoor heat exchange assembly through a conveying pipeline, and the indoor space is refrigerated / heated; a water pan is arranged on the lower side of the first heat exchanger, a first electric heating device is arranged in the water receiving disc, and the first electric heating device is electrically connected with a solar power supply device and a heat pump system power supply device through a first change-over switch; and the air source heat pump system further comprises a heat pump controller, the heat pump controller is used for controlling the first change-over switch to enable the solar power supply device or the heat pump system power supply device to supply power to the first electric heating device. According to the heat pump system, the problem that ice is easily accumulated on the water pan when the environment temperature of an existing heat pump system is low is solved.

Description

technical field [0001] The invention relates to the field of heat pump systems, in particular to an air source heat pump system and a control method thereof. Background technique [0002] At present, when the air source heat pump units on the market are used in winter, the fins will be frosted, and a large amount of condensed water will flow down the fins during defrosting. The flow rate of frost water is slow and the drain pan is unequal, causing the defrosted water to solidify and freeze before entering the drain pipe, and the ice in the drain pan gradually increases, causing the drain pan to completely lose its function, and the ice will gradually accumulate and thicken. Finally, it spreads upward along the fins, causing the copper tube of the first heat exchanger to freeze and crack. This problem is especially serious in ultra-low temperature environments. [0003] In order to avoid the problem of ice accumulation in the water tray, in the prior art, one solution is to ...

AI Technical Summary

Problems solved by technology

[0005] The first technical problem to be solved by the present invention is the problem that the water receiving tray is easy to accumulate ice when the ambient temperature of the existing air source heat pump system is low

[0006] The second technical problem to be solved by the present invention is the poor fluidity of lubricating oil inside the compressor and oil separator after the existing air source heat pump system has a low ambient temperature and has been shut down for a long time

Images