It is well known that the compressor is the key part of a refrigeration system, comparable to the heart of a man. Its characteristics and capability determine the efficiency and performance of the refrigeration cycle. A miniature compressor refers to a kind of compact refrigeration compressor with cooling capacity of less than 1KW that is normally used in small-size refrigeration solutions. It is said to be tailored-made for the cutting-edge compact refrigeration system. The miniature compressor from Moir Cooling is a kind of innovative, variable speed, miniature BLDC refrigerated compressor.  

The significance of the mini dc-powered compressor requests us to get better acquainted with its internal structure, and discover how each component does.  Hence, we can well know which needs special care and routine maintenance, to keep it smooth running.

In this article, we will know the basics of the Miniature BLDC Refrigerated Compressorby first getting familiarized with the major parts of the same. Let’s get started.

Structure and Accessories of the Miniature BLDC Refrigerated Compressor 

Composed of 3 main parts : DC motor,  Mechanical part, and Housing part

• Motor:  Including Stator and Rotor 
• Mechanical part: Cylinder, Vane, Roller, Main bearing, Sub bearing, Crankshaft, etc. 
• Housing Part:  Top cap, Bottom cap,  Main Shell, Accumulator, Base ect.

Details and Function of the Major Components inside the Miniature Refrigerated Compressor. The major components of a rotary compressor and their functions offer the equipment its capability of reliability and functionality.  Check out for more.

1) Motor ( Stator Winding & Rotor ) : Motors are typically run by a rotor and a stator. They are the heart of the rotary refrigeration compressor and always come in pairs.  The stator is a stationary part fixed on the housing and generally wound with windings.  The rotor is known as the rotational part that provides the torque or turning force to do the work we desire. The stator produces the magnetic force that causes the rotor to rotate. The electric motor in MOIR’s mini rotary compressor is Brushless Direct Current Motor( BLDC motor)

2)Cylinder : The cylinder is fastened to the crankcase of the compressor. It is a pressure vessel used to compress the gas entering from the low-pressure side.  It is composed of a cylinder cap, cylinder housing, and cylinder base.

3)Crankshaft : The crankshaft is the major shaft in a refrigeration compressor. It is the part that inverts rotary motion into rectilinear motion.

4)Main Bearing/ Sub Bearing: The bearing is not the least component that can be found throughout the compressor’s crankcase. It ensures other components in the mini refrigeration compressor are properly positioned radially.

5)Accumulator: The accumulator in the compressor is to collect and prevents the liquid coolant from flowing into the other components.  

Advantages of MOIR Miniature BLDC Refrigerated Compressor

This hermetic type of BLDC motor compressor offers substantial advantages in many compact and portable thermal management solutions where space and weight are critical.

• Compact Size: Compact and light in weight.  When at the same cooling capacity, it is 40%~50% smaller volume and 40~50% lighter than the reciprocating compressor.
• Simplicity: less parts, simple construction, small mechanical loss, and vibrations are comparatively small in amplitude as has few reciprocating elements.
• Precise Regulation: Driven by variable speed controller, precisely controls the temperature, offers energy-optimization, fast responding, and comfort features, easy to achieve auto-control function.
• BLDC Motor:  The BLDC motor is used as a prime mover for the mini compressor. It has large starting torque, fast response, and performance providing torque from zero to rated speed, easily realizing the variable speed frequency control of the micro dc compressor.
• Powerful: Small footprint but high performance, high efficiency with cooling capacity 100~1000W, a versatile design meets a wide range of applications.

Conclusion

These are the main parts of a mini dc rotary compressor and each plays a crucial role to give it its high level of performance.  The components made by different vendors are similar, while the quality of the material will determine the level of functionality.  Therefore, knowing the details clearly is a must-have when reaching to the vendor.

【About MOIR】

MOIR is engaging in miniature refrigerated compressor and small cooling solutions in China, led by a group of technicians and engineers savvy with over 15 years of experience in the micro refrigeration industry. The mini dc rotary compressor is tailored for mobile thermal management and is unbeatable when it comes to dealing with extremely hot environments in ultra-compact space. They feature a compact, less weight, silent operation, less vibration design, variable-speed control, and energy saving for powerful, efficient, and reliable performance.

They are vital for many businesses that want to take advantage of micro vapor-compression refrigeration cooling their precise equipment for stable operation and productivity.  The miniature refrigerated compressor can cover air conditioning units, commercial refrigeration, food processing, marine, beverage, chemical, aesthetics, pharmaceutical, marine, military, and leisure industries.

Besides the standard compact refrigeration units, we welcome and can work closely with you on your OEM/ODM project. Please contact us atzoe@moircooling.comfor a free evaluation of your unique requirement.