Heavy-Duty Screw Refrigeration Compressor for Freezing

Product Overview

Blait’s High-Efficiency Industrial Screw Refrigeration Compressor is a professional-grade solution engineered for demanding commercial and industrial cooling and freezing applications. Designed with a robust semi-hermetic structure and advanced screw rotor technology, this compressor delivers stable performance, energy savings, and long service life—making it ideal for cold storage, food processing facilities, industrial refrigeration plants, and heavy-duty freezing systems. Whether operating under high-pressure or low-temperature conditions, it maintains superior cooling capacity while minimizing energy consumption, addressing the core needs of businesses seeking reliable and cost-effective refrigeration solutions.

Electrical  Connection

Energy Control , Unloading & Start

Oil Circulation

1.Oil filter:

Maximum allowable working pressure: 31bar, maximum operating temperature: +120℃

Filtration accuracy: 25μm is equal to 500 mesh

2.Oil flow switch:

Selects 10L/min

3.Oil circuit pressure drop:

During normal operation, the pressure drop of the oil cooler and pipeline on the oil side shall not exceed 0.5 bar.

4.Oil temperature control:

During normal operation, the oil temperature is controlled based on discharge temperature of 80 ℃,  it’s generally set between 50-60 ℃.

Kit for oil injection

Compressor protection accessories

Compressor equip:

•motor temperature protection 

•discharge temp. protection 

•phase sequence protection 

•oil flow protection

When required:

•oil temp. protection ; oil pressure protection 

•high pressure protection ; low pressure protection 

•oil level protection ; motor overload protection

Core Features

High-Efficiency Energy-Saving Design

Optimized screw rotor profiles (YZ57 tooth profile line, composed of arcs and higher-order curves) and advanced motor technology work in tandem to reduce power consumption without compromising cooling output. The compressor’s minimized leakage triangle area and high area utilization coefficient (0.41 & 0.45) further enhance energy efficiency, cutting operational costs significantly.

Semi-Hermetic Structure for Easy Maintenance

The semi-hermetic design allows internal inspection and component access without full system shutdown, reducing downtime and maintenance complexity. Built with industrial-grade materials resistant to wear, corrosion, and high pressure, it ensures durability even in harsh industrial environments.

Low Noise & Vibration Operation

Engineered for smooth performance, this industrial screw compressor features low vibration and noise levels, making it suitable for sensitive settings such as food processing facilities and pharmaceutical cold storage where quiet operation is critical.

Wide Operating & Adjustable Capacity Range

Supports both high and low-temperature applications (-50℃ to 20℃) for flexible system integration. The adjustable capacity function enables precise control over refrigeration output, improving part-load efficiency and adapting to variable load conditions seamlessly.

Why Choose Blait

Tailored Industrial Solutions: Blait offers OEM and customized compressor specifications, including voltage, power, and installation accessories, to match unique project requirements—from small cold rooms to large-scale industrial freezing warehouses.

Proven R&D Strength: Backed by rigorous testing and engineering expertise, our screw compressors comply with international standards (GB/T19410-2018) and are trusted by industrial operators worldwide.

Global Refrigerant Compatibility: Compatible with common industrial refrigerants (R134a, R404A, R507A, NH₃), ensuring seamless integration with existing systems.

Long-Term Reliability: Precision engineering and high-quality components guarantee a long service life, reducing replacement and maintenance costs over time.