Hitachi Compressor 404DHD-64A1

07/07/2025

Working principle of air compressor

An air compressor (air compressor) is a device used to compress gas. The structure of air compressor and water pump is similar. Most air compressors are reciprocating piston type, rotating blades or rotating screws. Centrifugal compressors are very large applications.

09/03/2020

Preventive maintenance of compressor equipment

Compressor as a mechanical equipment, after a period of operation, due to wear, deformation, corrosion, blockage and other reasons to produce failures or failure precursors, so it is normal and necessary to repair.

09/15/2020

Motor and generator

Motor and generator SKF has long and extensive experience in the motor industry and most industries that use motors and generators. In this highly competitive industry, SKF's rich knowledge has been used to develop various solutions to meet the growing needs of people in improving quality, shortening delivery time, reducing noise levels and improving technical support.

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.

09/01/2020

The most complete version｜Basic theoretical knowledge of compressed air (2)

Six, compression and compression ratio 　　1, compression 　　 Adiabatic compression is a compression process in which gas heat is not significantly transferred or transferred during the compression process.

08/02/2020

Equipment selection for cold storage design and installation temperature and size are critical

The equipment selection of the cold storage design and installation is related to the actual operation of the cold storage after the completion of the cold storage.

08/13/2020

What are the ways to save electricity in the freezer

Nowadays, people's lives are inseparable from electrical appliances. There are various electrical appliances in the home. Of course, the electricity consumption is constantly increasing.

08/12/2020

How to increase the displacement of the compressor and the common problems of the compressor

1. How to increase the displacement of the compressor?<br></br> 　　Answer: Increasing the compressor's displacement (air delivery) means increasing the output coefficient. The following methods are usually used:

06/17/2020

The role of refrigerator compressors

The role of refrigerator compressors The role of refrigerator compressor 　　The compressor is the power of the refrigerator, which is equivalent to the heart of the refrigerator, compresses the refrigerant, increases the pressure and temperature of the r器2䀀
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06/29/2020

Compression ratio of American Copeland compressor