• Direct Refrigeration Unit

     

    Direct Cooling Unit—an advanced direct refrigeration solution engineered for superior temperature control across various applications. Whether you're seeking optimal refrigeration performance, efficient electronic cooling, or refrigerator heat dissipation, our Direct Cooling Unit delivers unmatched results.

     

    Some of the leading laser manufacturers are exploring an innovative approach called direct expansion cooling. In this method, the refrigerant flows directly through the cold plate, propelled by the compressor. This approach offers several advantages, including the elimination of a liquid recirculating pump, fluid reservoir, tubing, and connectors—common sources of failures and leaks.

     

    The efficiency is significantly enhanced by eliminating losses associated with cooling a liquid, resulting in energy savings (8 times less than thermoelectric coolers and 2 times less than liquid chillers). Data from our laboratory, the cooling capacity for direct refrigerant is 25% greater than that of a liquid chiller at 25 degrees Celsius. The system is simplified, enhancing reliability and reducing the overall size of the cooling system.

     

  • Direct Expansion System, DV1910

    DV1910

    Capacity: 450W (1,535Btu)

    • 12V DC
    • 3.5 kgs/7.7lbs
    • Refrigerant: R134A
    • Working Amps: 1~8A, (Max 10A)
    • 190x160x138 mm (7.48x6.3x5.43 inch)
    • The drive board is included.
    Direct Expansion System, DV1920

    DV1920

    Capacity: 450W (1,535Btu)

    • 24V DC
    • 3.5 kgs/7.7lbs
    • Refrigerant: R134A
    • Working Amps: 1~7A, (Max 8.5A)
    • 190x160x138 mm (7.48x6.3x5.43 inch)
    • The drive board is included.
    Direct Expansion System, DV1930

    DV1930

    Capacity: 450W (1,535Btu)

    • 48V DC
    • 3.5 kgs/7.7lbs
    • Refrigerant: R134A
    • Working Amps: 1~4A, (Max 7.5A)
    • 190x160x138 mm (7.48x6.3x5.43 inch)
    • The drive board is included.
    Direct Expansion System, DV3220

    DV3220

    Capacity: 550W (1,876Btu)

    • 24V DC
    • 4.0 kgs/8.8lbs
    • Refrigerant: R134A
    • Working Amps: 1~10.3A, (Max 12.5A)
    • 190*190*182mm (7.48x7.48x7.17inch)
    • Drive board is included
    Direct Expansion System, DV2820

    DV2820

    Capacity: ≥500W to 700W (2,387Btu)

    • 24V DC
    • 4.0 kgs/8.8lbs
    • Refrigerant: R134A
    • Twin-cylinder mini compressor
    • Working Amps: 1~8.3A, (Max 12A)
    • 190*190*182mm (7.4 x 6.2 x 5.9" inch)
    • Drive board is included
    • LED display (optional)
    Direct Expansion System, DV2820-T

    DV2820-T

    Capacity: ≥500W to 700W (2,387Btu)

    • 24V DC
    • 4.0 kgs/8.8lbs
    • Refrigerant: R290
    • Twin-cylinder mini compressor
    • Working Amps: 1~8.3A, (Max 12A)
    • 190*190*182mm (7.4 x 6.2 x 5.9" inch)
    • Drive board is included
    • LED display (optional)
  • Direct Expansion Refrigeration System Cycle

     

    RIGID HVAC specializes in providing highly efficient and reliable refrigerated cooling systems. We have developed the world's smallest rotary compressor and offer custom solutions for various industries, including food, laser, medical, industrial, battery, electric vehicles, and military applications.

     

    Notable products include AlphaCooler, designed for driver body cooling in racing and motorcycles, and compact Liquid Chiller, a core component for liquid refrigeration systems.

     

    RIGID also excels in direct expansion cooling, simplifying system configurations, and maximizing efficiency, particularly in laser, semiconductor, and medical device applications. RIGID company's expertise and proven track record highlight its commitment to delivering compact, efficient, and durable cooling solutions.

     

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    DX System Cooling Cycle

     

    Direct refrigeration systems operate by directly connecting the customer's evaporator. The evaporator, placed in the area to be cooled, cools the space by expanding the refrigerant in its coil and absorbing heat from the surroundings.

     

    Examples of systems using this approach include mini-refrigerators, cooling for laboratory equipment, precision instrument cooling, and equipment that needs direct refrigerant cooling packages.

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    Direct Cooling Features

    • 40% greater cooling capacity.
    • Maintenance-free and factory-sealed.
    • Improved efficiency and energy savings.
    • Refrigerant flows directly through the cold plate.
    • Smaller and lighter than traditional liquid chiller systems.
    • Ideal for laser, semiconductor, and medical device applications.
    • No need for pumps, reservoirs, or tubing, reducing potential failures and leaks.
    • Simplified system for high reliability (mean time between failures > 90,000 hours).
  • Advantages of Direct Refrigeration System

    Easy to install, Ease to test, Ultra-compact size, Minimum ceiling or wall space needed.

     

    Low installation costs

     

    Reduced install expenses, No worry of maintenance.

    Sine Wave Drive Borad

     

    Ease to test, adjust and balance the system.

    Brushless DC Rotary Compressor

     

    Battery or dc power supply, Low energy consumption.

    Tiny Size & Smallest Footprint

     

    Easy to integrate into user devices, low noise level.

  • Direct Expansion Evaporator System Applications

    The RIGID Direct Expansion Evaporator System comprises miniature refrigeration modules cooled directly by refrigerants, leveraging RIGID's technology for a highly compact cooling solution.

     

    These mini direct expansion systems easily integrate into compact, quiet, reliable, and cost-effective final solutions. Users have the flexibility to incorporate expanded cold plates directly into our expansion systems, enabling tailored cooling or precise temperature control for specific spaces.

     

    RIGID's direct expansion systems find applications in various fields, such as mini-fridges, industrial settings, medical facilities, scientific laboratories, lasers, instruments, and other scenarios requiring active thermal management. The system, with a directly mounted cold plate, allows for precise temperature control with an accuracy of +/-0.5°C.

     

    Thanks to RIGID's mini compressor, these systems can be exceptionally compact, making them ideal for high heat flux applications in electronics cooling, batteries, laboratory cold plates, and more.

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    Custom Refrigerator

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    Beverage Cooler

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    Outdoor Freezer

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    Outdoor Refrigerator

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    Electronics Battery

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    Cold Plate Cooling

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    Precise Instrument

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    Laboratory Equipments

  • Online Store

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    DV2820-T Direct Refrigeration (24V, R290)
    $500.00 - $590.00
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    DV2820 Direct Refrigeration (24V, R134A)
    $480.00 - $570.00
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    DV3220 Direct Refrigeration (24V, R134A)
    $460.00 - $550.00
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    DV1930 Direct Refrigeration (48V, R134A)
    $410.00 - $500.00
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    DV1920 Direct Refrigeration (24V, R134A)
    $400.00 - $490.00
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    DV1910 Direct Refrigeration (12V, R134A)
    $390.00 - $480.00
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  • Contact Us

    We have our own R&D department and manufacturing facilities. Thereby, we control the complete process from the first idea to the delivery of finished cooling products to customers. If you don’t see what you are looking for in our product lineup, do not hesitate to talk to us about your system. Apart from standard cooling systems, RIGID also provides custom solutions. We have developed solutions for medical devices, life science, laboratory, electronics, laser, Lithium battery, and electric vehicle customers. We can design a miniature cooling system to meet the requirements of your application. To learn more, go to our Design & OEM page. Or, please contact us for a free evaluation of your application.

  • FAQ

    Direct Refrigeration System Frequently Asked Questions

     

  • ​Specifications Download PDF

     

    Miniature compressor

     

    Miniature compressor

     

    Miniature compressor

     

    Miniature compressor

    Twin-cylinder compressor

    Twin-cylinder compressor