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07/07/2020

Earth Hour: Hitachi Central Air Conditioner works with you to speak for the earth

04/29/2023

What Does the Compressor Do in the Refrigeration System

We know that whether it is an air conditioner or a refrigerator, a powerful compressor is needed to ensure its normal and efficient operation.

08/13/2020

Air-cooled modular cold and hot water unit configuration and takeover notes

The air-cooled modular hot and cold water unit is a combination of independent air-cooled heat pump units. At present, the modular unit is a very good model in the commercial air conditioning market.

06/08/2022

Function and 7 Common Types of Solenoid Coil?

The self induced electromotive force in the inductance coil always competes with the change of current.

01/16/2021

The working principle of piston compressor

The-working-principle-of-piston-compressor Working principle of piston compressor 　　 First, the working principle of the compressor When the crankshaft of the piston compressor rotates, the piston will reciprocate through the transmission of the co器2䀀
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08/11/2020

The function and calculation method of air-conditioning ventilation static pressure box

1. What is a static pressure box?<br></br> 　　 Static pressure box, also known as plenum chamber, is a large space box connected to the air outlet. The flow velocity of the air flow in this space decreases to close to zero, the dynamic pressure is converted into static pressure

06/25/2020

Displacement compressor classification_Characteristics of displacement compressor

Positive displacement compressors are mainly divided into the following four types: screw compressors, piston compressors, rolling rotor compressors, and scroll compressors.

06/14/2020

A compressor is a fluid machine that raises low-pressure gas to high-pressure gas

It sucks low-temperature and low-pressure refrigerant gas from the suction pipe, drives the piston to compress it through the operation of the motor

09/06/2020

The difference between variable frequency air compressor and industrial frequency air compressor

The difference between variable frequency air compressor and industrial frequency air compressor: 　　 1. The pressure is stable:

03/15/2021

ALPHA Alpha Servo Drive Repair

Common faults of Alpha servo drives include: power-on without display, with display without output, overcurrent, overvoltage, undervoltage, overheating, overload, overspeed, phase loss, jitter, encoder abnormality, module damage, ground fault, parameters Errors etc.