Scroll Compressor LBP 2-12HP DMZL​

Introduction & Scenario-Specific Solutions

LBP Scroll Compressors for Small ULT Applications

The Scroll Compressor LBP 2-12HP DMZL (DF13~DF91 series) combines the compactness of scroll design with low-temperature adaptability (-40°C to -5°C). It solves the limitations of reciprocating LBP compressors—high noise, frequent maintenance, and low efficiency—making it ideal for small-scale ULT cooling needs.

Scenario 1: Laboratory Low-Temperature Refrigerators

Labs use small ULT fridges (100-300L) to store enzymes, cell cultures, and reagents at -20°C to -40°C. The DF13~DF91 series maintains ±1°C precision, preventing sample degradation. Its low vibration (<0.1g) also avoids disrupting sensitive lab equipment (e.g., centrifuges).

Scenario 2: Small Frozen Food Displays

Convenience stores and gas stations use small frozen displays (50-150L) for ice cream, pizza, or frozen meals. The DF13~DF91 series’ <58dB operation keeps customers comfortable, while its energy efficiency cuts electricity costs by $150/year per unit vs. reciprocating compressors.

Scenario 3: Mobile Medical Coolers

Ambulances and mobile clinics use small coolers (50-100L) to transport blood, vaccines, and medications at -10°C to -20°C. The DF13~DF91 series’ lightweight design (26-56kg) and shock-resistant casing (reinforced with rubber mounts) withstands road vibrations, ensuring cargo stays cold during transport.

Design & Material Innovations

Low-Temperature Adaptive Scroll Profiles

The DF13~DF91 series features modified scroll profiles with tighter clearances (0.1mm vs. 0.2mm for standard scrolls) to:

• Improve compression efficiency at -40°C (20% better than standard scrolls).

• Reduce refrigerant leakage (≤0.2% annual leak rate).

• Prevent oil thickening (via optimized oil flow channels).

Enhanced Material Durability for ULT

• Scrolls: Reinforced PTFE coating (resists cracking at -40°C) on aluminum alloy cores.

• Casing: Corrosion-resistant aluminum alloy with a zinc-plated finish (suitable for humid mobile environments).

• Motor Windings: Class F insulation (tolerates 155°C), preventing burnout in low-temperature operation.

Optional DTC Valve for Energy Savings

For models DF29HE-DF91HE, an optional Dynamic Temperature Control (DTC) valve adjusts refrigerant flow based on evaporating temperature. This reduces energy use by 12% vs. standard LBP scroll compressors, especially in applications with fluctuating loads (e.g., frozen food displays).

Detailed Technical Specifications

Additional Operational Specifications

• Power Supply: 220V/1ph/50Hz (DF13HE/DF20HE); 380-420V/3ph/50Hz (DF29HE-DF91HE).

• Refrigerant Compatibility: R404A/R507A (optimized for LBP use).

• Spray Port: 11/16 inch (for refrigerant injection in low-temperature operation).

• Crankcase Heater: 70W (prevents oil freezing at -40°C).

Technical Support & After-Sales Services

Low-Temperature Calibration Services

We calibrate the DF13~DF91 series to your exact temperature requirements (e.g., -40°C for lab fridges, -18°C for frozen displays). This ensures optimal performance and compliance with standards (e.g., GLP for labs, HACCP for food displays).

Mobile Application Mounting Support

For ambulance or truck-mounted coolers, we provide custom mounting brackets and shock-absorbing pads to:

• Secure the compressor during transport.

• Reduce vibration (to avoid component damage).

• Maximize airflow (to maintain cooling efficiency).

Extended Warranty for Medical & Lab Use

• Standard Warranty: 15 months on all components.

• Extended Warranty: 24 months for medical/lab clients (compliant with ISO 13485 and FDA requirements).

We also offer free annual maintenance checks for medical applications.

Energy Efficiency Audits

Our team conducts free energy audits to:

• Optimize refrigerant charge (to reduce energy use).

• Recommend insulation improvements (for ULT fridges/displays).

• Adjust DTC valve settings (for models with optional valves).

This helps you cut operational costs by 10-15% annually.