During the operation of an oil-free scroll air compressor, the intake air temperature has a significant impact on its efficiency and performance. As mentioned above, the air density decreases under high temperature, which requires more energy to compress the same volume of air and may also affect the stability of the equipment. Therefore, it is necessary to reduce the inlet air temperature. Combined with the working principle and structural characteristics of the oil-free scroll air compressor, it can be started from the following aspects.
First, improve the design of the intake pipeline
(a) Increase the length and surface area of the pipeline
Appropriately increase the length of the intake pipeline, and use a larger surface area of the pipeline material or structure, such as the use of corrugated pipeline. This can increase the residence time and heat dissipation area of the air in the pipeline, so that the air and the external environment can fully exchange heat and reduce the temperature. However, it should be noted that an increase in the length of the pipe will lead to an increase in air intake resistance, so it should be adjusted within a reasonable range, and at the same time, the inner wall of the pipe should be cleaned regularly to prevent the accumulation of dust from affecting the heat dissipation effect .
(B) Optimize the direction of the pipeline
Reasonable planning of the direction of the air intake pipeline, to avoid excessive bending and narrow parts of the pipeline, to reduce the resistance of air flow, to ensure that the air can flow smoothly. In addition, the air intake pipeline as far as possible arranged in the area of lower temperature, such as laying along the cool wall of the building, to further reduce the temperature of the air intake in the delivery process.
Second, the addition of intake air cooling equipment
(a) the use of air cooler
air cooler installed on the intake pipeline, the air into the air compressor pre-cooling but. Air cooler can be divided into air-cooled and water-cooled two kinds. Air-cooled air cooler through the fan forced convection, the heat in the air away, with easy installation, without the advantages of additional water; water-cooled air cooler is the use of cooling water and air heat exchange, cooling effect is more significant, but need to be equipped with water circulation system. Enterprises can choose the right air cooler according to the actual needs and conditions to effectively reduce the intake air temperature.
(ii) Installation of refrigeration devices
For working conditions with extremely stringent requirements on intake air temperature, small refrigeration devices, such as refrigeration dryers, can be considered for installation. Refrigeration dryer can not only reduce the air temperature, but also remove the moisture in the air to improve the quality of intake air. It is through the refrigeration system to cool the air to the dew point temperature below, so that the water vapor condenses into water droplets discharged, and then the cooled air heated to the appropriate temperature and then sent to the compressor, not only to reduce the temperature of the intake air, but also to avoid the low temperature leads to pipeline condensation and other issues.
C. Optimize the equipment installation environment
(a) Choose a suitable installation location
Install the oil-free scroll compressor in a well-ventilated and cool place, avoiding direct sunlight and close to heat source equipment. For example, away from boilers, heating furnaces and other equipment that emit a lot of heat to reduce the impact of environmental heat on the air intake. If the factory space is limited and it is impossible to avoid being close to the heat source, you can set up a heat barrier, such as installing heat insulation boards, to block the heat transfer to the surrounding environment of the air compressor, so as to reduce the temperature of the intake air.
(ii) Enhance ventilation and heat dissipation
Install mechanical ventilation devices, such as exhaust fans and axial fans, in the installation area. Through forced ventilation, accelerate air circulation, take away the hot air around the air compressor in time, and introduce fresh air with lower temperature. Reasonable planning of the location and number of vents to ensure that the air can form an effective convection to improve the ventilation and heat dissipation effect. For example, install an exhaust fan above the compressor to exhaust the hot air outside, and set up an air inlet below to introduce cold air outside.
Through the above methods, we can effectively reduce the inlet temperature of oil-free scroll air compressor, improve the operating efficiency and stability of the equipment, reduce energy consumption, prolong the service life of the equipment, and provide a more reliable air source for the production of enterprises.
