Air conditioner cold-hot water unit with antifreeze solution regenerated heat recovery device

Abstract

The invention discloses an air conditioner cold-hot water unit with an antifreeze solution regenerated heat recovery device. The air conditioner cold-hot water unit comprises a compressor, an evaporative condenser, a throttling device, an evaporator and the antifreeze solution regenerated heat recovery device, wherein the interface of one end of the compressor is respectively connected with the gas tube of the evaporative condenser and the gas tube of the evaporator; the interface of the other end of the compressor is simultaneously respectively connected with the gas tube of the evaporative condenser and the gas tube of the evaporator; the connecting pipeline of the throttling device is respectively connected with the liquid tube of the evaporator and the liquid tube of the evaporative condenser; and the cooling water system of evaporative condenser is provided with the antifreeze solution regenerated heat recovery device. By using the antifreeze solution regenerated heat recovery device, the solution regeneration and a recycle of solution regeneration energy source are realized, and an antifreeze solution is avoided to be frozen; and technology security is provided for the air conditioner cold-hot water unit to take heat from outdoor air through the evaporative condenser so as to realize efficient, continuous and stable heat supply.

Description

technical field [0001] The invention relates to the technical field of cold and hot water units for air conditioners, in particular to an air conditioner cold and hot water unit with an antifreeze solution regeneration heat recovery device. Background technique [0002] The use of evaporative condensers to extract heat from the outdoor air and provide heat energy for the cold and hot water units of the air conditioner 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 exchange. The device material can realize continuous heating, and has a significant prospect of energy saving and emission reduction. However, in the currently commonly used air-conditioning hot and cold water 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 Compone...

AI Technical Summary

Problems solved by technology

However, in the currently commonly used air-conditioning hot and cold water 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 Components may be in 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 components 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 (or solution regeneration) is not increased in time, 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 heating devices for air-conditioning cold and hot water units in low-temperature regions

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