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Energy-Saving Screw Refrigeration Compressor YLG20Z-84

The High-Efficiency Industrial Screw Refrigeration Compressor is specially designed for industrial and commercial cooling applications, providing energy-saving performance and reliable operation. Featuring advanced screw technology and durable semi-hermetic construction, this compressor ensures stable cooling capacity, low noise, and reduced operational costs. Ideal for cold storage, food processing, and industrial refrigeration systems.
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  • YLG20Z-84

  • Blait


Product Overview

Blait’s YLG20Z-84 energy-saving screw compressor is a game-changer in industrial and commercial refrigeration, engineered with advanced screw technology and a durable semi-hermetic construction. This high-efficiency industrial refrigeration compressor delivers stable cooling capacity, low noise, and reduced operational costs, making it ideal for cold storage, food processing, medical refrigeration, and industrial cooling systems. Designed for continuous heavy-duty operation, it adapts to varying load conditions while ensuring precise temperature control—empowering businesses with reliable and cost-effective cooling solutions.


Durable Industrial Screw Refrigeration Compressor YLG20Z-84


Core Features

Energy-Optimized Screw Rotor Design

The compressor’s advanced YZ57 tooth profile (composed of arcs and higher-order curves) minimizes leakage losses and maximizes area utilization (0.41 & 0.45), reducing power consumption without compromising cooling performance. This energy-saving design cuts electricity usage, delivering long-term operational savings for industrial and commercial users.

Durable Semi-Hermetic Structure

Built with industrial-grade materials, the semi-hermetic design enhances durability and simplifies maintenance. Cylinder bore hardening, optimized valve plates, and high-performance bearings ensure resistance to wear, shaft seizure, and exhaust pulses—extending the compressor’s service life even in demanding industrial environments.

Low-Noise & Stable Operation

Smooth screw rotor operation and structural optimizations reduce noise and vibration, making the compressor suitable for both industrial facilities and commercial spaces like supermarkets. The stable performance under heavy loads ensures consistent cooling without disruptions to surrounding operations.

Versatile Cooling Adaptability

Supports both medium and low-temperature refrigeration applications, compatible with common environmentally friendly refrigerants (R134a, R404A, R507A). With adjustable capacity for partial load optimization and mobile installation, it integrates seamlessly into new or existing systems, catering to diverse project needs.


Why Choose Blait

Blait is a trusted manufacturer with a dedicated R&D center and partnerships with top universities (China Jiliang University, Xi’an Jiaotong University). Our refrigeration compressors undergo rigorous testing at nationally calibrated performance test stations, adhering to GB/T10079-2018 and GB/T19410-2018 standards. We offer customization (voltage adaptations, installation fittings, OEM services) and responsive support—from remote installation guidance to troubleshooting—ensuring your cooling system operates at peak efficiency.



Technical Specifications

Key Specs Overview

The YLG20Z-84 operates at 7.5 kW power (380V/50Hz) with a displacement of 0.8-1.2 m³/min (50 Hz: 84 m³/h; 60 Hz: 101 m³/h). It features air-cooled/water-cooled options, a 12-liter lubricant capacity, and a PTC110°C temperature sensor for safety. The INT69 FSY protection module and oil flow monitoring ensure reliable operation under high-pressure conditions (2.0MPa pressure difference resistance).

Detailed Technical Table

Specification

Value

Model

YLG20Z-84

Brand

Blait

Product Type

Energy-saving screw refrigeration compressor

Power

7.5 kW (Power range: 4 kW - 355 kW)

Displacement (50 Hz)

84 m³/h

Displacement (60 Hz)

101 m³/h

Lubrication Method

Lubricated (12 liters capacity)

Cooling System

Air-cooled/Water-cooled

Structure Type

Semi-hermetic

Installation Type

Mobile

Compression Stage

Single-stage

Voltage

380V/50Hz

Refrigerant Compatibility

R134a, R404A, R507A

Temperature Sensor

PTC110°C

Protection Module

INT69 FSY

Weight

166 kg

Max. Pressure Difference

2.0MPa



Key Applications

Cold-Chain Transportation & Warehousing

Maintains stable low temperatures for food, pharmaceuticals, and industrial goods during transportation and storage, ensuring product quality and safety in logistics centers and cold storage warehouses.

Food & Beverage Processing

Delivers consistent cooling for production lines, preserving the freshness and quality of food and beverages—critical for compliance with industry safety standards.

Medical Refrigeration

Serves as the core component of pharmaceutical refrigeration equipment, ensuring drugs are stored and transported within optimal temperature ranges to maintain efficacy.

Industrial Environmental Testing

Provides reliable cooling for high & low-temperature alternating test chambers, simulating extreme conditions for testing electronics, automotive, and aerospace products.



Maintenance & Warranty

Maintenance Requirements

The semi-hermetic design simplifies maintenance, reducing downtime. Routine checks (airtightness, oil pressure, refrigerant levels) are recommended every 12 months for standard use; harsh industrial conditions may require more frequent inspections. Blait provides detailed technical manuals and wiring diagrams for easy servicing.

Warranty Coverage

The YLG20Z-84 includes a 12-month warranty for the compressor and replacement for defective accessories. Blait’s technical support team offers remote installation guidance and troubleshooting, with extended warranty options available for customized projects.


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Zhejiang Briliant Refrigeration Equipment Co., Ltd. is a professional manufacturing enterprise that specializes in compressor design, research and development, production, and sales.
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