Danfoss Compressor SH304B4ABH

07/25/2020

Oil pressure protection? High and low voltage protection? Thermal relay protection? Come and see if the automatic control appliance fails

There are two types of failures in the automatic control of refrigeration devices: one is caused by the failure of the refrigeration system; the other is caused by automatic control, electrical component failure, and improper debugging.

07/07/2020

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

08/12/2020

How to prevent the refrigeration compressor from reversing

Reverse rotation is strictly prohibited after the refrigeration compressor is stopped. When the compressor rotor is stationary, there is still a large volume of process gas remaining in the pipeline and has a certain pressure

09/11/2020

Bearing and shaft fit tolerance standard

Bearing and shaft fit tolerance standard ①When the bearing inner diameter tolerance zone and the shaft tolerance zone form a fit, the tolerance code originally belonging to the transition fit in the general basic hole system will become an over-win fit, such as k5, k6, m5, m6, n6, etc., but the over-win amount is not Large; when the bearing inner diameter tolerance is matched with h5, h6, g5, g6, etc., it is not a clearance but an over-win fit.

08/09/2020

Is inverter air conditioner really more power efficient Power consumption measured at home, it depends on the situation!

Regardless of whether it is cold or hot, air conditioning is basically used. When buying air conditioners, inverter air conditioners are a big gimmick promoted by merchants.

06/30/2020

Structural differences between three common compressors

Structural differences between three common compressors The three common structures of compressors are rotor compressors, scroll compressors and piston compressors. The structures of these three compressors are different. It is precisely because of their different structures that different functions exist.

08/02/2020

What should be paid attention to when using the showcase

After the cabinet is moved, it must be placed securely and stand still for half an hour before it can be powered on. When using the supermarket display cabinet for the first time, let the empty cabinet run for 2 hours before putting the food in the cabinet for storage

09/02/2020

The importance of training in the quality era of air compressors

Recently, when I was communicating with friends in the industry, I heard two cases. I think it is instructive for air compressor manufacturers or distributors who are "taking the quality" road, and they are worthy of our thoughts and learning. 　　1, compression<br></br> 　　 Adiabatic compression is a compression process in which gas heat is not significantly transferred or transferred during the compression process. The above process can become a reality in a fully insulated cylinder

08/03/2020

Temporary treatment method for plate heat exchanger gasket aging

The softening of the elastic gasket is related to pressure and temperature. When the gasket loses its elasticity, the heat exchanger will leak. In some products, in order to solve the dripping phenomenon caused by the aging of the sealing gasket,

09/14/2020

What are the reasons for the high temperature of the air compressor

The air compressor is a transmission machine. If the equipment running at high speed is not properly lubricated or cooled, it will inevitably produce high temperature. Excessive temperature will cause changes in the physical coefficient values ​​of the rotor and bearing materials, and in severe cases, the entire main engine will bite.