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Rigid Cooling

Compact Liquid Chillers

Battery-Powered DC Chillers for Liquid Cooling – Air-Cooled & Water-Cooled Options.
About

Efficient Cooling, Simplified with RIGID’s Compact Liquid Chillers

RIGID is a leader in micro refrigeration, having developed an innovative range of compact liquid chillers/modules powered by our advanced mini compressors. These chillers are designed to meet the needs of customers looking to integrate micro refrigeration technology into their equipment.

Key Features of RIGID Compact Liquid Chillers:

  • Core Cooling Solutions: Our compact chillers excel in providing efficient cooling for applications that demand portable and space-saving solutions.
  • Essential Components: Each compact chiller consists of four main components: a compressor, condenser, capillary or expansion valve, and evaporator. This streamlined design ensures effective cooling performance in a small footprint.
  • User-Friendly Design: RIGID liquid chillers come equipped with a drive board, simplifying the process for clients who want to package and connect refrigeration circuits to their systems seamlessly.

 

Versatile Applications

RIGID Compact Liquid Chillers (LCM) are used across various industries, demonstrating their adaptability and effectiveness. Key applications include:

  • Medical & Aesthetic: Providing precise cooling for medical devices and cosmetic treatments.
  • Drones: Enhancing performance and longevity by maintaining optimal temperatures.
  • Life Sciences: Supporting critical temperature control in laboratories and research environments.
  • Vertical Farming: Ensuring efficient cooling for sustainable agricultural practices.
  • Laboratory Instruments: Facilitating reliable cooling for scientific equipment.
  • Electronic Cooling: Protecting sensitive electronic components from overheating.
  • Laser Cooling: Managing heat dissipation for laser technology.
  • Personal Cooling: Offering portable cooling solutions for individual comfort.

 

RIGID’s commitment to innovation and efficiency makes our compact liquid chillers an ideal choice for businesses seeking reliable and effective cooling solutions. Whether you’re in the medical field or working with advanced technologies, our chillers are designed to meet your unique needs.

Compact Liquid Chiller Provides Small Water Cool

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Plate Liquid Chiller

  • Cooling Approach: Liquid Cooling
  • Evaporator Type: Plate and Frame
  • Temperature Range: ±20℃ (-4~68℉)
  • Core Parts: Compressor, Controller, Condenser, Evaporator, Filter drier

 

*Feature: The optimum water chiller solutions with a large cooling capacity and the smallest footprint.

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Coaxial Liquid Chiller

  • Cooling Approach: Liquid Cooling
  • Evaporator: Stainless Steel Coaxial
  • Temperature Range: ±20℃ (-4~68℉)
  • Core Parts: Compressor, Controller, Condenser, Evaporator, Filter drier

 

*Feature:  A mobile compact water chiller provides the best cooling performance and the smallest footprint.

Direct-expansion-unit

Direct Expansion System

  • Cooling Approach: Direct Expansion
  • Temperature Range: -30℃  ~ 5℃
  • Evaporator Type: Excluded (optional)
  • Core Parts: Compressor, Controller, Condenser, Filter drier

 

*Feature: Direct expansion system offers direct refrigeration with the most simple configurations and smallest size.

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St. St. Coil Chiller

  • Cooling Approach: Liquid Cooling
  • Temperature Range: ±20℃ (-4~68℉)
  • Evaporator Type: Stainless st. coil tube
  • Core Parts: Compressor, Controller, Condenser, Evaporator, Filter drier

 

*Feature: Small liquid chiller allows the end user to chill fluids directly in his own reservoir or water tank.

Copper-coil-liquid-chiller

Copper Coil Chiller

  • Cooling Approach: Liquid Cooling
  • Evaporator Type: Copper coil tube
  • Temperature Range: ±20℃ (-4~68℉)
  • Core Parts: Compressor, Controller, Condenser, Evaporator, Filter drier

 

*Feature:  The best small and mobile water chiller offers direct liquid cooling in a reservoir.

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Mini Water Chiller

  • Cooling Approach: Liquid Cooling
  • Evaporator Type: Plate and Frame
  • Temperature Range: ±20℃ (-4~68℉)
  • Core Parts: Compressor, Controller, Condenser, Evaporator, Filter drier

 

*Feature: Ultra-small liquid chiller allows the end user to adapt to the coolant fittings for ultimate flexibility.

Mini Compressor By Refrigerants

The mini compressors are compatible with various refrigerants R134a, R290, R1234YF, and most low GWP refrigerants.

R134a Mini Compressor

The R134a Mini Compressor runs quietly and efficiently, and operates with the direct current power supply when powered by a battery, vehicle, grid, or solar power.

R290 Mini Compressor

The natural refrigerant R290 Mini Compressor can be powered by AC using an AC-DC converter. This compact cooling system offers precision control and unique flexibility.

Small AC Compressor

The AC Compressor is compact (R410A/R134a/R290) and has a low working current. It’s used in freezers, chillers, dehumidifiers, air conditioning, and compact commercial refrigeration.

Compact Liquid Chiller Features

Compact Size

The world’s smallest footprint is designed for compact & confined space.

High Reliability

Sophisticated manufacturer ensures a high degree of reliability.

High Efficiency

Inverter technology & various speed PCB ensures high efficiency.

Low Weight

The weight of the dc miniature compressor is only 720g / 1.59lbs.

Plate Liquid Chiller

Plate Liquid Chiller uses a plate&frame heat exchanger to transfer heat between two fluids.

  • R134a/R290
  • 4kgs/8.8lbs
  • Capacity: 100~550W
  • Voltage: 12V/24V/48V
  • Size: 330x200x138mm
  • The mini dc compressor provides peak performance.

Coaxial Liquid Chiller

Coaxial Liquid Chiller uses stainless st. coaxial heat exchanger to transfer heat between two fluids.

  • R134a/R290
  • 4kgs/8.8lbs
  • Capacity: 100~550W
  • Voltage: 12V/24V/48V
  • Size: 330x200x138mm
  • The mini dc compressor provides peak performance.

Direct Expansion System

World’s Smallest and Lightest-weight Direct Refrigeration DC Condensing Unit

  • R134a/R290
  • 2.5 kgs/5.5lbs
  • Capacity: 100~550W
  • Voltage: 12V/24V/48V
  • Size: 190*160*138mm
  • The mini dc compressor provides peak performance.

St. St. Coil Chiller

Stainless Coil Liquid Chiller uses a stainless coil tube heat exchanger to transfer heat between two fluids.

  • R134a/R290;
  • 3kgs/6.6lbs;
  • Capacity: 100~550W;
  • Voltage: 12V/24V/48V;
  • Size: 275x175x138mm;
  • The mini dc compressor provides peak performance.

Copper Coil Chiller

Copper Coil Liquid Chiller uses a copper coil tube heat exchanger to transfer heat between two fluids.

  • R134a/R290
  • 3kgs/6.6lbs;
  • Capacity: 100~550W;
  • Voltage: 12V/24V/48V;
  • Size: 275x175x138mm;
  • The mini dc compressor provides peak performance.

Mini Water Chiller

Ultra small Plate Liquid Chiller with mini micro-channel condenser.

  • R134a only;
  • 2.5 kgs/5.5lbs;
  • Capacity: 100~550W;
  • Voltage: 12V/24V/48V;
  • Size: 200x230x145 mm;
  • The mini dc compressor provides peak performance.

Compact Liquid Chiller Application

The Compact Liquid Chillers have been used in a wide variety of applications including EV, laser, medical, drone, farming, beverage, life science, laboratory instruments, electronics cooling, automotive, and personal cooling.

Laser Cutting

Medical Device

EV Battery

3D Printer

Why Choose Rigid Compact Liquid Chillers

Choose the most effective option. 110% percent efficiency.

Outstanding Capacity

Smaller in size, but higher in performance suits laser diodes, beverages, electronics, batteries, coolers, boxes, vans, etc.

Higher COP

The inverter variable speeds PCB board (2,000 rpm~6,500 rpm) provides a higher Coefficient Of Performance >3.5W/W.

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DC Power Supply

The DC Power Supply 12V, 24V, and 48V is tailored for mobile and off-grid air conditioning and refrigeration applications.

State-of-the-Art Technology

State-of-the-Art Technology of Microclimate Cooling System

RIGID Liquid Chiller Module (LCM) uses miniature dc compressor to cool the liquid. LCM includes Miniature Compressor, Driver Board, Condenser, Evaporator and other cooling parts. It provides core cooling and refrigerant control mode is capillary tube. This subsystem is full charged with R134a and oil and ready to use. It allows end users to adapt to the coolant fittings for ultimate flexibility.

Compact Liquid System Specifications PDF

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Frequently Asked Questions

  • Ultra-Compact Yet High-Performance
  • Delivers reliable cooling and refrigeration results.
  • Lightweight and Small Configuration
  • Perfect for a variety of small refrigeration applications.
  • The variable-speed DC compressor can run on battery, vehicle power, grid electricity, or solar energy.

A liquid chiller is a cooling system that removes heat from components or devices using the circulation of a liquid, typically water. This method is more effective than air cooling as liquids conduct heat better. Liquid chillers are commonly used in high-precision applications, such as cooling lasers, laboratory instruments, and even in high-end computers to keep critical parts like CPUs and GPUs cool. They work by transferring heat through convection and circulation of the coolant.

The RIGID Compact Liquid Chiller is an integrated cooling module designed for applications where space and weight are crucial. This compact system includes a miniature compressor, drive board, condenser, evaporator, and other components, all fully charged and ready for use. It simplifies the cooling process by directly driving the refrigerant through heat exchangers, eliminating the need for additional water pumps and tubing. This makes it ideal for industries like medical, laboratory, and military applications that require reliable and efficient cooling in tight spaces.

RIGID developed compact liquid chillers to address the increasing demand for lightweight and portable cooling solutions in various industries. These chillers are designed to withstand harsh environmental conditions while providing reliable cooling and heating capabilities. They feature a built-in pump and reservoir for easy coolant circulation and can be integrated into larger systems or function as standalone units. With precise temperature control and flexibility in design, RIGID’s chillers meet the needs of mobile applications that face shock, vibration, and variable conditions.

RIGID Compact Liquid Chillers are designed to cool concentrated heat sources like laser diodes and medical devices. They operate by circulating fluid through a tube where it is cooled by a mini refrigerated compressor before flowing out through another tube. An external pump is required for the system to function effectively. The use of a mini DC compressor helps to keep the chiller’s size small while still providing powerful cooling, making it ideal for compact applications.

RIGID offers six standard types of DC Liquid Chillers: 

  • Coaxial Liquid Chiller
  • Plate Liquid Chiller
  • Mini Water Chiller
  • Copper Coil Chiller
  • Stainless Steel Coil Chiller
  • DC Condensing Unit

Additionally, RIGID provides custom cooling solutions tailored to meet unique customer needs, ensuring that the designs align with specific cooling requirements.

Yes, RIGID specializes in creating custom-made refrigeration systems. We collaborate closely with our clients to develop tailored cooling solutions that meet their specific demands. Beyond standard HVAC products, RIGID is committed to leveraging our refrigeration expertise to deliver innovative and effective cooling systems that consistently exceed customer expectations.

RIGID compact liquid chillers offer different radiator configurations, including Plate & Frame, Coaxial Stainless Steel, and Coil-type evaporators (heat exchangers). These chiller modules are easy to integrate into your existing system or directly into your equipment.

Key Features:

  • Weight: 6.6 lbs (3.0 kg)
  • DC Input: 12V, 24V, 48V
  • Inverter brushless compressor
  • Cooling capacity: 300 BTU to 1,600 BTU

Key Benefits:

  • Small, energy-efficient DC compressor
  • Available in stationary or portable models
  • Reduced weight, footprint, and noise
  • Fully integrated, compact design for precise thermal control

RIGID Technology specializes in designing small and mobile cooling modules and water chillers for a wide range of industries, including medical, food, laboratories, lasers, telecommunications, commercial, and industrial sectors.

Main Applications Include:

  • Lasers and Chips
  • Laboratories
  • Electronics
  • Life Sciences
  • Medical Devices
  • Electric Vehicles
  • Vertical Farming
  • Drone Docking Stations
  • Battery Storage Systems
  • Mini Water-chilled Systems

RIGID Compact Liquid Chillers and custom mini HVAC systems are built to meet your specific cooling needs while keeping costs, size, weight, and power use to a minimum. This helps lower the size and cost of the power supply, making your final product more competitive.

When selecting a chiller unit, there are several key factors to keep in mind:

  1. Cooling Capacity

Cooling capacity refers to the amount of cooling the chiller can provide under normal operating conditions. It’s usually measured in watts and depends on factors like the evaporating and condensing temperatures. The chiller’s capacity is determined by the refrigerant flow rate, which relies on the compressor’s size, speed, and efficiency. RIGID compact liquid chillers have cooling capacities ranging from 100W to 550W. For larger chillers (880W to 1,780W), click here!

  1. Refrigerant Type

The type of refrigerant used impacts performance, availability, and environmental concerns. RIGID liquid chiller modules are designed to work with R134a refrigerant.

  1. Ambient Temperature

RIGID chillers are mainly for indoor use, and they require a minimum ambient temperature of +5ºC to work properly. However, RIGID has also developed a T-tropical series mini compressor that can operate at temperatures as high as 55ºC.

  1. Electrical Power Available

RIGID liquid chiller modules are commonly used in mobile or portable refrigeration systems powered by DC sources like batteries, fuel cells, vehicle alternators, solar panels, or AC inverters. Be sure to choose a compressor that matches the DC voltage available. RIGID compressors come in 12V, 24V, and 48V versions.

  1. Size and Cooling

RIGID chillers are compact and high-performing, making them ideal for applications where space is limited. The chiller’s size is only 7.85 × 6.3 × 6.7 inches, and it weighs just 6.6 lbs. Despite its small size, it provides cooling from 100W to 550W.

The RIGID Compact Liquid Chiller (LCM) is a small, sealed refrigeration system that comes with everything you need for cooling. It includes:

  • A mini compressor (variable speed DC)
  • A drive board (sine wave)
  • A condenser
  • An evaporator
  • A capillary tube or expansion valve
  • A filter drier
  • Blowers and fans
  • Other small refrigeration components

The chiller is pre-charged with refrigerant before shipping, insulated, and mounted on a baseplate for easy installation into your system.

To use it, simply connect your coolant loop to the evaporator and provide airflow over the condenser. You can also adjust the compressor speed through the driver board to control the cooling performance.

The RIGID Mini Compressor offers several advantages over thermoelectric systems, especially when used in a refrigeration setup with a high-performance condenser and evaporator. Here’s how they compare:

  • Space Savings: The RIGID mini compressor allows the entire refrigeration system to fit into a very small package, as small as 100 in³ (1.64 litres). This means more space is available for product storage, which is often more important than reducing weight in most refrigerated appliances.
  • Weight Reduction: Using a mini compressor can reduce the overall weight of the system by about 10 lbs (4.54 kg), which is a significant benefit in portable or mobile applications.
  • Better Performance & Efficiency: A small vapour compression system with the RIGID mini compressor performs much better than thermoelectric coolers. When cooling needs exceed 100W, the mini compressor system is much more efficient, offering:

 

a. ¼ to ½ the weight and volume of thermoelectric systems

b. 1/3 to ½ the power consumption

In short, for higher cooling capacities, the RIGID mini compressor system is far superior to thermoelectric systems, offering better performance, smaller size, and lower energy use.

 

Mini compressor - RIGID

RIGID Compact Liquid Chillers are efficient, self-contained refrigeration units that use R134A coolant. They feature a mini condenser, evaporator, filter drier, driver board, and other essential components—all carefully designed and integrated into one compact unit. These chillers circulate chilled water through pipes and have a small footprint, making them easy to transport and install.

Key Benefits:

  • Extremely Small, Yet Powerful: Compact design with high performance.
  • DC Rotary Variable Speed: Runs on 12V, 24V, or 48V DC power.
  • Reliable and Precise: Ideal for consistent cooling and refrigeration.
  • Lightweight and Portable: Perfect for a wide range of small refrigeration applications.
  • Flexible Power Options: Can operate on battery, vehicle, grid, or solar power.

 

These chillers are designed to provide effective cooling while saving space and reducing weight.

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