YUKEN Vane Pump PV2R13-25-76-F-RAAA-41

06/25/2020

Briefly explain the principle, advantages and disadvantages of screw compressors

Briefly explain the principle, advantages and disadvantages of screw compressors The screw compressor has the characteristics of small size, light weight, easy maintenance, etc. It is a model that develops faster in refrigeration compressors. On the one hand, the screw profile and structural design have made great progress. On the other hand, the introduction of special milling machines for screw rotors, especially grinding machines, has improved the machining accuracy and processing efficiency of

07/27/2020

What is the principle of air conditioning refrigeration system? What is the heating principle of the air conditioner?

When we use the air conditioner, the commonly used function should be the cooling function, because the cooling function can bring us a more comfortable and cool environment in summer,

02/10/2021

How to choose post-processing equipment for screw air compressors

During the operation of the screw air compressor, post-processing equipment is indispensable. Without post-processing equipment, it is not a complete screw air compressor system. The air compressor post-processing equipment includes: refrigeration dryer, air storage tank, filter For different screw air compressor models, the specifications of post-processing equipment are different.

09/09/2020

The effect of using different air compressors in the same industry

People who are often in contact with air compressors should know the basic difference between a piston machine and a screw machine. They have obvious differences in structure, moving parts, operating parts, life span and performance.

06/29/2020

Several causes of compressor burning

06/20/2020

What are the causes of air conditioning trip

What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire. 　　Here are two formulas involved: 　　①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required. 　　② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current. 　　 So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit. 　　 Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle. 　　 2. Leakage 　　During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip. 　　Why does the electric leakage cause the MCB to trip? There are two situations. 　　 ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close. 　　②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open. 　　How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter. 　　 ① Measure the voltage at the input and output to see if there is a significant change in voltage drop. 　　②Measure whether the output current exceeds the standard. 　　 So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.

08/30/2020

Observation on the evolution of the compressor industry

Some of the changes in the compressor market are like summer storms, such as price rises and falls, and sales volume. Some changes are like the drizzle in spring, moistening things silently.

07/26/2020

Common faults and troubleshooting methods of refrigeration compressors

The compressor is the "heart" of the refrigeration system. The compressor sucks low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through the operation of the motor, and then discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to provide power for the refrigeration cycle to realize the refrigeration cycle. The editor summarizes the common faults and troubleshooting methods of the compressor to help you better maintain the compressor.

08/19/2020

How to distinguish inferior refrigerants What effect does refrigerant purity have on the system

Inferior refrigerants will affect the performance and stability of the system, and more seriously will cause damage to system components and compressors. The following methods can be used to distinguish whether it is a low-quality refrigerant:

08/16/2021

How to Put Freon in a Refrigerator Compressor

As we all know, the most important reason why refrigerators and air conditioners can be cooling is that the Freon.