Oil-free scroll air compressor compared to the advantages of oil-free piston machine and oil-free screw machine

First of all, we simply understand the oil-free scroll air compressor

scroll air compressor is the latest type of air compressor developed in the past two decades. Compared with traditional air compressors, it has novel structure, small size, light weight, low noise, long life, stable and continuous gas transmission, A series of excellent technical performance such as easy operation and low maintenance cost. It is praised by the industry as a new revolutionary air compressor without maintenance.

Principle

the scroll air compressor is composed of two moving and static scroll plates meshing with each other. In the process of suction, compression and exhaust, the static disc is fixed on the frame, and the moving disc is driven by the eccentric shaft and restricted by the anti-rotation mechanism, and rotates on a plane with a small radius around the center of the static disc base circle. The gas is sucked into the periphery of the static disc through the air filter element. As the eccentric shaft rotates, the gas is combined into several crescent-shaped compression chambers under the engagement of the static and dynamic discs, and is gradually compressed, and then continuously discharged from the axial hole of the central part of the static disc.

Comparison of oil-free scroll air compressor with piston machine and oil-free screw machine:

1. Comparison of piston machine and scroll machine

the power of a single scroll air compressor is 1.5kW, 2.2kW and 3.7kW respectively, which probably corresponds to the piston machine dragging three, six and ten. Through the data analysis after actual operation, it is concluded that the scroll machine has significantly improved the quality (oil, particulate matter), operation life, vibration, noise and other aspects compared with the piston machine, so as to meet the national medical gas standard. Mainly applicable to oral clinics, outpatient department.

2. Comparison of water lubricated screw machine and scroll machine

the water-lubricated screw machine and the multi-head scroll machine are mainly compared with 11kW-30Kw models. This kind of equipment is mainly suitable for oral and Junior College hospitals of a certain scale (the number of dental chairs is more than 30, and some scales are about 200). Most of them use imported water-lubricated screw machines or imported scroll machines, and a small number use frame-type multi-head piston machines.

With the same power, the advantage of water lubricated screw machine is larger than the air volume of scroll machine. The disadvantage is that the requirements for water quality are high, and it is difficult for the hospital to meet the water quality requirements during use, which is easy to cause equipment damage and shutdown. At the same time, the machine needs to be used and equipped. The advantage of scroll machine is multi-head PLC intelligent control, self-adjusting the main machine to work according to the actual gas consumption, without spare machine, the disadvantage is that the operating cost of electricity is higher than that of screw machine.

Comprehensive advantages and disadvantages, more and more on the scale of the oral hospital in the compressed air equipment on the choice of water-lubricated air compressor