P+F Relay KFD2-CD-EX132

01/19/2023

The Differences between Solenoid Valves and Motorized Valves

The solenoid valve is an industrial equipment controlled by electromagnetic, which is the basic component of automation used to control fluid.

02/14/2025

How to Add Oil to Semi-Hermetic Compressor: A Step-by-Step Guide

If you work in the refrigeration or air conditioning industry, you know how important it is to keep your compressors properly lubricated.

08/09/2020

Causes and solutions of leakage in heating construction

In the heating construction process, leakage is a relatively common quality problem. Once leakage occurs, it will have a greater impact on people's normal production and life, and at the same time,

06/21/2020

Common system failures of refrigeration equipment

Common system failures of refrigeration equipment 1. Liquid return: For refrigeration systems using expansion valves, liquid return is closely related to the selection and use of expansion valves. Expansion valve selection is too large, the superheat setting is too small, the installation method of the temperature sensor is incorrect, the insulation bandage is damaged, and the expansion valve failure may cause liquid return.<img src="{{media url=&quot;Common_system_failures_of_refrigeration_equipment2.png&quot;}}" alt="" />

06/14/2020

Chinese air-conditioning compressor industry development and market data statistical investigation

Chinese air-conditioning compressor industry development and market data statistical investigation

08/19/2020

How to judge whether the refrigeration equipment is in normal working condition

The relevant valves and equipment in the system are in their proper state. The compressor suction and discharge valves, the inlet and outlet valves of the oil separator, and the inlet and

09/22/2020

Compressed air dewatering, oil removal and dust removal multifunctional filter

Compressed air degreasing, water removal and dust removal filter (purification equipment) Sometimes, connecting a piece of equipment to a compressed air supply station cannot solve the quality of compressed air.

06/14/2020

Refrigerating oil use characteristics and performance requirements

Refrigerating machine oil is mainly used to lubricate the parts that need to be lubricated in the freezing machine, and is closely related to the running performance and service life of the compressor, so its selection and application are very important.

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.

07/07/2020

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