Danfoss commercial refrigeration equipment hydraulic gear pump
Danfoss Hydraulic Gear Pumps for Commercial Refrigeration Equipment
Danfoss hydraulic gear pumps are specifically engineered to meet the rigorous demands of commercial refrigeration systems, delivering reliable performance, exceptional efficiency, and long service life in critical cooling applications. Designed with advanced hydraulic technology and robust construction, these pumps ensure stable fluid transfer and precise pressure control, which are essential for the optimal operation of commercial refrigeration equipment such as cold storage units, supermarket display cases, industrial chillers, and refrigerated transport vehicles.
Core Features and Benefits
- Quiet and Low-Vibration Operation: Equipped with 13-tooth gears (compared to 10-tooth designs in previous generations), the pumps minimize flow ripple significantly, thereby reducing noise and vibration levels. The optimized trapped oil relief areas further enhance quiet operation while lowering input power requirements, making them suitable for noise-sensitive commercial environments.
- Enhanced Efficiency: The improved bearing lubrication system utilizes inlet oil instead of high-pressure oil, boosting volumetric efficiency for greater power output. Highly polished shafts and gears reduce mechanical friction and wear, extending component service life and ensuring consistent efficiency over the pump’s lifespan. Additionally, pressure-balanced thrust plates optimize efficiency even under extreme pressure and temperature conditions.
- Field Reversibility: The innovative wear plate design enables easy on-site reversal of the pump direction without requiring extra parts. Simply open the pump, switch the drive gear and idler gear, reposition the plug, and reassemble—facilitating flexible installation and maintenance adjustments in commercial refrigeration systems.
- Superior Interchangeability: Series 26 gear pumps are designed to retrofit equipment previously using B1 and B2 gear pumps. A wide range of options, including multiple shafts, porting configurations, mounting flanges, and 13 available displacements, ensure seamless conversion to this high-performance pump, minimizing downtime during upgrades or replacements.
- Robust Construction: Built with rugged cast iron materials, the pumps exhibit excellent durability and can withstand extreme operating conditions, including high pressures and temperature fluctuations. Standard Viton® seals provide superior resistance to high temperatures and various hydraulic fluids, while Teflon® coated bushings extend service life under harsh pressure and temperature environments.
Key Technical Specifications
| Specification | Value |
|---|---|
| Maximum Continuous Pressure | 210 bar (3000 psi); 190 bar (2750 psi for 30.6 cm³/rev displacement) |
| Maximum Intermittent Pressure | 240 bar (3500 psi); 224 bar (3250 psi for 30.6 cm³/rev displacement) |
| Speed Range | Minimum continuous pressure speed: 750 rpm; Maximum rated speed: Up to 3600 rpm (varies by displacement) |
| Operating Temperature Range | Minimum: -29 °C (-20 °F); Maximum continuous: 105 °C (220 °F) |
| Displacement Options | 6.6 cm³/rev (0.40 in³/rev) to 45.1 cm³/rev (2.75 in³/rev), with multiple configurations available |
| Mounting Flange | SAE A 2-bolt (standard); SAE B 2-bolt available for specific models |
| Maximum Inlet Vacuum | 0.8 bar abs. (11.6 psi abs.) under operating conditions |
Applications in Commercial Refrigeration
Danfoss hydraulic gear pumps play a vital role in various commercial refrigeration systems, providing the necessary hydraulic power for key components such as:
- Cold storage facilities: Powering hydraulic doors, conveyor systems, and temperature control valves to maintain stable low-temperature environments.
- Supermarket refrigeration: Supporting the operation of display case cooling systems, hydraulic adjustment mechanisms for shelves, and refrigeration unit compressors.
- Industrial chillers: Ensuring efficient fluid circulation in cooling circuits, optimizing heat exchange processes and energy efficiency.
- Refrigerated transport: Driving hydraulic systems for temperature regulation, door operation, and load securing in refrigerated trucks and containers.
With their combination of reliability, efficiency, and flexibility, Danfoss hydraulic gear pumps are the preferred choice for commercial refrigeration applications, helping to reduce energy consumption, minimize maintenance costs, and ensure uninterrupted operation of critical cooling systems.
