Taking the single-screw air compressor as an example to illustrate the working principle of the screw air compressor, as shown in the figure is the structural schematic diagram of the single-screw air compressor (screw air compressor). The working principle of screw air compressor (screw air compressor) is as follows: suction, sealing and conveying, compression and exhausting. When the screw rotates in the housing, the screw meshes with the groove of the housing, the air is sucked in by the air inlet, and the oil is also sucked in, and the sucked oil is sealed and transported to the exhaust port due to the rotation of the meshing surface; During the process, the meshing gap of the tooth groove gradually becomes smaller, and the oil and gas is compressed; when the meshing surface of the tooth groove rotates to the exhaust port of the casing, the higher pressure oil and gas mixed gas is discharged from the body.
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The inverter of the screw air compressor can change the displacement of the screw by changing the speed of the screw rotor. When the volume of the gas changes, the inverter changes the speed of the air compressor to adjust the displacement of the air compressor to achieve a constant discharge pressure. Change and save energy for the purpose.
MC PCB--Metal Core Printed Circuit Boards
MC PCB means metal core printed circuit boards. why use metal,not FR4/CEM-1 or others? All is to get high thermal conductivity. The most MC PCB is Aluminum PCB, Aluminum has good heat transfer and dissipation ability, but also cheaper than copper based PCB.Many customers asked a quote for MC PCB but without the thermal requirements.If you know the thermal conductivity is the most most important thing for MC PCB,then
you will know why the price is so difference. Normal thermal is from 0.8-2.00 W/m.k,and higher can up to 8.0 W/m.k,even more if you need ,but ,are you sure ? When we quote to you ,we have to ask you the thermal conductivity,it is not only about cost but your product.Many factories used low thermal ,can you use the boards?
MC PCB uses in LED lights,Industrial power equipment,Cars,Power,etc. Bergquist is the top quality metal core material but top cost as well.
Thermal Conductive Board (TCB), or Insulated Metal Substrate (IMS), provides the advantages of high thermal conductivity, reliability and solder heat endurance. The TCB substrate is a sandwich structure, which includes layers of conductor, insulator and metal base.Traditionally, this insulator is made of epoxy, epoxy filled glass fiber, polyimide, or other dielectric materials. However, these kinds of insulators could not meet the requirement in high-power electronic devices. The heat generated by these devices will accumulate, andthe life time and reliability of the end product will decrease.
Visit bergquist to get more information about high thermal.
PTTC (Polytronics) is another top quality but much cheaper than Bergquist in the word ,it is made in TaiWan .visit PTTC.
MC PCB
MC PCB,MC PCB Board,White Solder PCB,Led Aluminum PCB
Storm Circuit Technology Ltd , http://www.stormpcb.com