An air-conditioning heat pump unit with an antifreeze solution regeneration device

Abstract

The invention discloses an air conditioner heat pump unit with an antifreeze solution regeneration device, which includes a compressor, an evaporative condenser, a throttling device, an evaporator, a blower, and an antifreeze solution regeneration device. The regeneration device includes a high-temperature heat source area, an antifreeze solution Liquid collecting pan, low-temperature cold source area, condensed water collecting pan, sprayer, gas circulation fan and gas circulation air duct; the low-concentration antifreeze solution flowing out of the sprayer undergoes mass transfer with the circulating gas , transfer the moisture of the low-concentration antifreeze solution to the circulating gas, and at the same time, the concentrated antifreeze solution enters the antifreeze solution collecting pan. The invention realizes the regeneration of the antifreeze solution, avoids the freezing of the antifreeze solution, and provides technical guarantee for the heat pump unit of the air conditioner to obtain heat from the outdoor air through the evaporative condenser to realize efficient, continuous and stable heat supply.

Description

technical field [0001] The invention relates to the technical field of heat pump units for air conditioners, in particular to an air conditioner heat pump unit with an antifreeze solution regeneration device. Background technique [0002] The use of evaporative condensers to extract heat from the outdoor air and provide thermal energy for the air-conditioning heat pump unit in winter is an important way to achieve efficient and stable heat supply. Compared with air source heat pumps, it has high heat exchange efficiency and saves heat exchanger materials. , can achieve continuous heating, and has a significant prospect of energy saving and emission reduction. However, in the currently commonly used air-conditioning heat pump units, when the temperature of the brine (cooling water) in the evaporative condenser is lower than 0°C, the brine will freeze into ice, and the evaporative condenser and its connected parts may There is a danger of being damaged by expansion cracks. At...

AI Technical Summary

Problems solved by technology

However, in the currently commonly used air-conditioning heat pump units, when the temperature of the brine (cooling water) in the evaporative condenser is lower than 0°C, the brine will freeze into ice, and the evaporative condenser and its connected parts may There is a danger of being damaged by expansion cracks. At this time, if an antifreeze solution with a suitable concentration can be obtained, it can ensure that all parts work normally at low temperatures.

In addition, when the heat pump works, after the evaporative condenser takes heat from the air, the temperature of the air will drop, which will cause the moisture in the air to condense, and this part of the condensed water will enter the antifreeze solution, which will lead to the dilution of the antifreeze solution. As the concentration of the solution decreases, the freezing point of the antifreeze solution will increase. If the concentration of the antifreeze solution is not increased in time (or solution regeneration), the solution pool, water pump and other components of the evaporative condenser still have the risk of expansion and cracking

In order to solve this problem, at present, the diluted solution is often added with high-concentration antifreeze, and the overflowed diluted antifreeze solution is stored in an indoor or underground solution storage tank. After the outdoor temperature rises, the diluted antifreeze The solution is pumped into the evaporative condenser, and the energy in the air is used to realize the regeneration of the solution. This method inevitably requires a high concentration of antifreeze, a large-capacity storage tank for concentrated solution and dilute solution, resulting in a large amount of antifreeze and a large solution storage space. Huge, extremely high initial investment and increased operating costs of antifreeze greatly limit the application of evaporative condensers as heat pump heat pump units in low temperature areas

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