Hitachi Compressor FL800EL-144C3

09/08/2020

The evolution history of air compressors

The (mechanical) vacuum pump made in Germany in 1640 is the originator of modern air compressors. 　　 Around 1800, the first single-stage (reciprocating piston) air compressor was made in the UK, and its discharge pressure was 1.38MPa (gauge pressure).

06/29/2020

Several causes of compressor burning

03/01/2021

The main difference between brushless DC motor and DC servo motor

Different definitions: (1) Brushless DC motor is a typical mechatronics product, which is composed of motor body and driver. Brushless motor refers to the motor without brush and commutator (or collector ring), also known as commutator less motor. As early as the 19th century, when the motor was born, the practical motor was the brushless form, that is, the AC squirrel cage asynchronous motor, which has been widely used. However, the asynchronous motor has many insurmountable defects, so that the development of motor technology is slow. The transistor was born in the middle of last century, so the brushless DC motor using transistor commutation circuit instead of brush and commutator came into being. This new type of brushless motor is called electronic commutation DC motor, which overcomes the defects of the first generation of brushless motor.

08/27/2024

10 Common Reasons for AC Compressor Burnout, How Many Do You Know?

If the heat pump temperature is improperly set -- the cooling temperature is too low, or the heating temperature is too high

09/09/2020

Calculation method for determining air consumption of air compressor

The traditional method of determining the compressed air requirements of a new plant is to add up the air consumption (m³/min) of all air-consuming equipment, and then consider adding a safety, leakage and development factor.

09/11/2020

Provide compressed air without oil, water and dust

The drying effect is achieved through the principle of pressure swing adsorption. Not only can it be matched with a small air compressor, but it can also meet the needs of local users with special requirements behind the large air compressor, so as to avoid the high air quality requirements of individual points and the high configuration of the entire equipment to save investment.

04/18/2022

Why Electromagnetic Flowmeter Needs Grounding?

Before discussing grounding, I want to give you a question: what is grounding? We usually talk about all kinds of grounding including protection grounding, shielding grounding, working grounding, signal grounding and so on.

06/14/2020

Magnetic suspension refrigeration compressor PK traditional refrigeration compressor Principle

Magnetic suspension refrigeration compressor PK traditional refrigeration compressor Principle Magnetic levitation refrigeration compressor is a kind of magnetic field, so that the rotor is suspended in the air, there will be no mechanical contact and mﰸ2䀀
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10/24/2025

Common Faults of Cold Storage (with a List of Fault Repair Methods)

Cold storage is an indispensable and important facility in many industries. They play a key role in storing and preserving various products. However, even with the most sophisticated systems, cold storage can suffer from various failures.

08/05/2020

The difference between the three types of evaporators dry, flooded, and falling film evaporators

The refrigerant in the dry evaporator passes through the heat exchange tube, and the cold water runs outside the high-efficiency heat exchange tube. Such a heat exchanger has relatively low heat exchange efficiency,