Solar energy electric heating complementary air conditioner heat pump unit and control method

Abstract

The invention discloses a solar energy electric heating complementary air conditioner heat pump unit and a control method. The unit comprises a host circulation system and a solar energy auxiliary circulation system. According to the host circulation system, an auxiliary heat exchanger (5) is further arranged between a first throttle valve (3) and an outdoor heat exchanger (4). The solar energy auxiliary circulation system is constituted by a circulation pump (6), a solar energy collector (7), a three-way valve (8), an ejector (9), an intermediate heat exchanger (10), a second throttle valve (11), a first solenoid valve (12) and a second solenoid valve (13). An outlet of the solar energy collector (7) communicates with a first valve port of the three-way valve (8); a second valve port of the three-way valve (8) communicates with an inlet of the ejector (9); and an outlet of the ejector (9) communicates with an inlet of the intermediate heat exchanger (10). The key of the method is that when an outdoor environment temperature is larger than a critical value, a fan of the outdoor heat exchanger (4) operates in a low wind gear. The unit and the method can reduce energy consumption of refrigeration and heating.

Description

technical field [0001] The invention relates to the field of air conditioning, in particular to a solar electric heating complementary air conditioning heat pump unit and a control method. Background technique [0002] Energy saving has always been an important goal and research and development direction of the air-conditioning industry, and the use of solar energy as the driving energy for air-conditioning can greatly reduce operating costs, so solar air-conditioning has always been a research and development hotspot in the air-conditioning industry. However, the current solar air conditioners generally have three problems. First, if solar energy is fully used, a large-area solar energy collection device needs to be installed. The collection device is expensive and occupies a large area; The third is that if you want to achieve stable and reliable operation, you must add an energy storage device, which will further complicate the system and further increase the cost. [00...

AI Technical Summary

Problems solved by technology

The above-mentioned electric drive compression air conditioners generally have low power utilization rate, high energy consumption for cooling and heating, and insufficient energy saving. In addition, when heating in winter, the air conditioner is often prone to frost. Once frost occurs, it is necessary to turn on the defrosting mode in winter. It cannot be cooled in the middle, which affects the user experience

Images