Nidec Fan C34447-68

09/10/2020

Application of FPGA in the position control of DC motor

In a DC motor control system, the controlled quantity is generally the speed of the motor, and the purpose of control is to keep the speed of the motor at the required fixed value. But in the actual production process

06/29/2020

Suggestions for troubleshooting of compressor with liquid start

06/14/2020

Characteristics of rolling rotor compressor

Characteristics of rolling rotor compressor (1) Rolling rotor rotary compressor is a commonly used compressor for room air conditioners (2) Compared with the reciprocating piston compressor, it has the following characteristics:

09/10/2020

Lubrication characteristics and requirements of mobile air compressors

1. The characteristics of the mobile air compressor are: (1) The mobile air compressor should be easy to move frequently, the working conditions are changeable, and the load changes greatly. (2) Mobile air compressors are mostly heavy-duty, medium-speed or low-speed transmission, and most require frequent starting and often withstand shock loads;

07/20/2020

What are the specific operation methods for the maintenance of cold storage screw compressors?

　 Before the cold storage screw compressor must be overhauled, if possible, unload the slide valve to the "0" position, shut down normally, and cut off the power supply. The pipeline connected to the compressor should be cut off and the refrigerant and lubricating oil in the compressor should be discharged before the compressor can be disassembled.

06/14/2020

Types and selection criteria of control valves for refrigeration equipment The first thing to know is what is a control valve? A control valve, also known as a control valve, is mainly used in the field of industrial automation process control. Its functi

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08/27/2020

Is it the best companion for air-jet looms Centrifugal air compressor saves energy consumption by 30%!

With the continuous development of modern textile technology, compressed air has been widely used. Compressed air in the textile industry is used in pneumatic pressurization, pneumatic weft insertion, air jet twisting,

06/14/2020

Piston compressor

The work of the piston compressor is completed by the working volume composed of the cylinder, the air valve and the piston reciprocating in the cylinder. If the volume loss and energy loss (that is, the ideal working process) of the actual operation of t器2䀀
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08/07/2020

Knowledge points of HVAC cold and heat source design

1.The design position of the pump in the system: Generally speaking, the chilled water pump should be located at the front end of the chiller, and the chilled water coming back from the end is pumped back to the chiller through the chilled water pump;

08/11/2020

Common practice of oil return design in refrigeration system

When the condenser is installed higher than the compressor, a U-shaped bend is required at the intake pipe of the condenser to prevent oil from returning to the exhaust side of the compressor during shutdown and also help prevent liquid refrigerant from the condenser