An air-cooled fluorine pump air conditioning system and its control method

Abstract

The invention discloses an air-cooled fluorine pump air conditioning system and a control method thereof. After the system is installed, the actual installation data including the length of the online pipe and the drop data are input to the system, and the system will judge the negative drop by reading the actual installation data. The relationship with the limit value, according to the difference between the two, the automatic control system enters the compressor operation mode, the fluorine pump operation mode or the pressure pump operation mode. When the negative drop is too large, the fluorine pump is used to drive to increase the refrigerant power, thereby offsetting the refrigerant. The resistance loss and gravity loss can not only expand the installation and use environment of the product, but also realize the energy saving of the year-round operation.

Description

technical field [0001] The invention belongs to the technical field of air conditioners, and in particular relates to an air-cooled fluorine pump air conditioning system and a control method thereof. Background technique [0002] Air-cooled computer room air conditioners are mainly used in the environmental humidity control of data center computer rooms. The places where air conditioners can be installed on site are generally limited, resulting in outdoor units that can only be installed on the roof, podium or first floor. In general, the air conditioner in a computer room uses a negative drop (the outdoor unit is at the bottom, the indoor unit is at the top, and the height difference between the indoor and outdoor units) is at most 5 meters, and the positive drop (the outdoor unit is at the top, the indoor unit is at the bottom, and the height difference between the indoor and outdoor units) The maximum length is 20 meters, and the maximum length of the online pipe is 80 me...

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Problems solved by technology

[0002] Air-cooled computer room air conditioners are mainly used in the environmental humidity control of data center computer rooms. The places where air conditioners can be installed on site are generally limited, resulting in outdoor units that can only be installed on the roof, podium or first floor.

In general, the air conditioner in a computer room uses a negative drop (the outdoor unit is at the bottom, the indoor unit is at the top, and the height difference between the indoor and outdoor units) is at most 5 meters, and the positive drop (the outdoor unit is at the top, the indoor unit is at the bottom, and the height difference between the indoor and outdoor units) The maximum length is 20 meters, and the maximum length of the online pipe is 80 meters. Once the limit is exceeded, the air-cooled computer room air conditioner cannot be installed and used. It is necessary to replace the water-cooled computer room air conditioner or other types of computer room air conditioners, and the investment cost will increase.

[0003] When the distance between the internal and external units of the air conditioner in an air-cooled machine room is long and the drop is large, due to the resistance loss along the pipeline and the influence of the gravity of the refrigerant in the online pipe, the refrigerant may flash before the electronic expansion valve, causing the electronic expansion valve to fail. Unable to work stably and at the same time affect the heat transfer effect of the evaporator

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