Reciprocating Screw Hermetic 12v Danfoss Scroll Compressor SH120A4ALC for Refrigerator

Core Overview

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  Model:SH 120 A4 A L C

  
  

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  Type: Four-pole semi-hermetic reciprocating piston compressor. This means the compressor and the electric motor are housed within a single, bolted-tight casing, sharing the refrigerant for cooling. This design offers a compact structure and high reliability.

  
  

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  Series:Part of the Danfoss Performer SH series, renowned for high energy efficiency, low noise, and robust construction.

  
  

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  Positioning:A medium-to-large commercial compressor suitable for medium and low-temperature applications, serving as a modern, high-efficiency alternative to many older open-type compressors.

  
  

Key Technical Parameters (Typical Values)

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  Piston Displacement: 120.1 cm³(The "120" in the model number represents this displacement).

  
  

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  Refrigeration Capacity:Depends on operating conditions and refrigerant. For example, at an evaporation temperature of -10°C / condensation temperature of +40°C using R404A refrigerant, the capacity is approximately 11.5 kW. Capacity will be slightly lower when using R134a.

  
  

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  Suitable Refrigerants:

  
  

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  Primarily designed for modern HFC refrigerants such as R404A, R507, and R134a.

  
  

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  Important Note:This model is NOT suitablefor natural refrigerants like R717 (Ammonia), R744 (CO2), or hydrocarbons (e.g., R290 Propane). The official technical manual must be consulted before use.

  
  

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  Lubricant:Typically requires the use of POE (Polyol Ester) synthetic oilcompatible with the refrigerant.

  
  

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  Motor:

  
  

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  Poles: 4 poles(indicated by "A4" in the model), corresponding to a synchronous speed of approximately 1500 RPM (on a 50Hz power supply).

  
  

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  Power Supply: Typically 3-phase, 400V / 50Hz (specific voltage must be checked on the nameplate).

  
  

Model Number Interpretation

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  SH:Series code for the Performer SH series semi-hermetic compressors.

  
  

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  120:Total piston displacement, approximately 120.1 cm³.

  
  

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  A4: Alikely indicates a standard design version, and 4indicates a 4-pole motor.

  
  

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  A:Usually denotes standard suction connection type or voltage category.

  
  

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  L:Often refers to standard port lengths or a specific body length.

  
  

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  C:May indicate a specific motor design or product version.

  
  

Key Product Features

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   Semi-Hermetic Design:

   
   

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  Advantages:Eliminates the need for a shaft seal used in open-type compressors, fundamentally removing the risk of shaft leakage. Offers a more compact structure with lower noise and vibration. The motor is cooled by the suction refrigerant vapor, ensuring high efficiency.

  
  

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  Serviceability:The housing is sealed with removable covers, allowing internal core components (like the valve plate, pistons) to be serviced on-site, offering better maintainability compared to hermetic compressors.

  
  

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   High Energy Efficiency:

   
   

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  Features an optimized valve plate and flow path design, reducing pressure drops and ensuring the compressor operates at high efficiency, helping to lower system running costs.

  
  

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   Robust and Reliable:

   
   

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  Heavy-duty cast iron body and crankcase with sturdy internal components, designed for long-term continuous operation in commercial settings.

  
  

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   Built-in Protection:

   
   

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  The compressor typically includes provisions for connecting a liquid injection valve. This injects liquid refrigerant into the compressor head under high compression ratio or high discharge temperature conditions, effectively preventing motor overheating and oil carbonization, significantly enhancing reliability in harsh operating conditions.

  
  

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   Quiet Operation:

   
   

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  The semi-hermetic construction and internal dynamic balancing contribute to relatively quiet operation, making it suitable for noise-sensitive environments (e.g., supermarkets, hotel kitchens).

  
  

Typical Applications

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  Condensing units for medium and large cold storage rooms(chillers/freezers)

  
  

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  Refrigeration systems in the food processing and slaughterhouse industry

  
  

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  As a single compressor in supermarketrefrigeration rack systems or parallel compressor packs

  
  

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  Industrial process cooling

  
  

Important Notes

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   Fixed-Speed Compressor:This is a fixed-speed compressor; its speed is determined by the line frequency. Capacity modulation, if needed, must be achieved through external control systems (e.g., multiple compressors in parallel, cylinder unloading, or on/off cycling).

   
   

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   Technical Selection is Crucial:Selection must NEVERbe based solely on the model name. It is essential to use official Danfoss selection softwareto accurately calculate the compressor's key parameters (refrigeration capacity, power input, current, etc.) based on specific refrigerant, evaporation temperature, condensation temperature, subcooling, superheat,and other operating conditions.

   
   

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   Professional Installation & Maintenance:Installation, electrical connection, evacuation, refrigerant charging, and oil handling for semi-hermetic compressors MUSTbe performed by qualified professional refrigeration techniciansto ensure reliable system operation and compliance with safety standards.

   
   

Summary

The Reciprocating Screw Hermetic 12v Danfoss Scroll Compressor SH120A4ALC is a high-quality compressor designed for use in commercial refrigeration applications. This compressor is ideal for use in walk-in coolers, refrigerated display cases, and cold storage rooms, providing efficient cooling and stable temperatures in environments where refrigeration is essential.

With its reliable performance and durable construction, the Danfoss Scroll Compressor is built to withstand the demands of commercial refrigeration systems. Its reciprocating screw design ensures smooth and efficient operation, while the hermetic seal prevents leaks and contamination.

This compressor is designed for use with 12v power sources, making it suitable for a variety of refrigeration applications. Whether you need to maintain precise temperatures in a walk-in cooler or keep perishable goods fresh in a refrigerated display case, the Danfoss Scroll Compressor is up to the task.

Overall, the Reciprocating Screw Hermetic 12v Danfoss Scroll Compressor SH120A4ALC is a reliable and efficient solution for commercial refrigeration needs. Its high-quality construction and advanced design make it a top choice for businesses looking to maintain optimal cooling performance in their refrigeration systems.

Q1. Packing and shipping?

Answer: Pallet, wooden box or outer box, or according to customer's specific requirements

The DANFOSS  SCROLL COMPRESSOR SH120A4ALC  is specifically designed for use in refrigerators, offering a high level of efficiency and durability. With a 12v power supply, this compressor is suitable for a wide range of applications, from small commercial refrigerators to large industrial cooling systems. Its hermetic design ensures that the refrigerant remains sealed within the compressor, preventing leaks and ensuring reliable operation.

This compressor features advanced scroll technology, which provides smooth and quiet operation, reducing noise levels in the refrigeration system. The SH120A4ALC model also includes built-in protection features, such as overload protection and thermal protection, to ensure safe and reliable operation.

Overall, the DANFOSS SCROLL COMPRESSOR SH120A4ALC is a high-quality and reliable compressor that is perfect for refrigeration applications in commercial and industrial settings. Its energy-efficient design, robust performance, and compact size make it an excellent choice for those looking for a dependable cooling solution.

For more details on pricing and availability, feel free to contact us for a competitive quote on the DANFOSS  SH120A4ALC compressor today.