
Product Description
The LDH small integrated liquid nitrogen machine is a plug - and - play cryogenic solution designed to meet a variety of needs across different industries. It is a remarkable piece of equipment that combines advanced technology with user - friendly features.
The process begins with compressed air passing through an oil - free air compressor. After undergoing cold - drying, suction - drying, and filtration, it enters a PSA (Pressure Swing Adsorption) nitrogen - making machine. Subsequently, it passes through a sterilization filter to generate sterile nitrogen with a dew point of - 60°C. This sterile nitrogen then enters the refrigerator and is liquefied into liquid nitrogen, leveraging the advanced MRJT (Mixed Refrigerant Joule - Thomson) process based on a regenerative multi - component mixed - refrigerant throttling refrigeration cycle. From ambient temperature to the target refrigeration temperature, high, medium, and low - boiling pure components are optimally selected to form a multi - component mixed refrigerant, enabling the effective refrigeration temperature zones of each boiling - point component to be relayed and matched. This allows the machine to efficiently achieve a refrigeration temperature range of - 40 ~ - 196°C.
Our Advantages
- Convenient Control: It offers flexible control options. You can freely set the daily start and stop times through the timing function. Additionally, when equipped with a liquid nitrogen tank with a liquid level gauge, the machine can start or stop based on the liquid level, and the liquid level can be clearly displayed, providing great convenience for users.
- Remote Monitoring: Thanks to MCGS remote monitoring technology, users can remotely download historical operation records and perform online program upgrades. This feature enables easy remote maintenance, allowing you to manage the machine's operation without being physically present, saving time and effort.
- Compact Design: The machine adopts a fully enclosed box - type compact design, which not only saves space but also makes it suitable for various installation environments. Whether it's a small - scale laboratory or an industrial production site with limited space, this machine can be easily integrated.
Product Parameters
Model |
LPLN3 |
LPLN-5 |
LPLN-10-W |
LPLN-20-W |
LPLN-40-W |
Liquid nitrogen production (L/day) |
80 |
120 |
240 |
500 |
720 |
1000 |
1200 |
Liquid nitrogen production (L/h) |
3 |
5 |
10 |
20 |
30 |
40 |
50 |
Installed power(kW) |
8 |
9 |
11 |
25 |
25 |
35 |
35 |
Type(AC V) |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
380/50Hz |
Cooling form |
Air cold |
Air cold |
Water cold |
Water cold |
Water cold |
Water cold |
Water cold |

Why Choose LDH?
Backed by Beijing LDH Gas Systems Company Limited, a high - tech enterprise with numerous national patent certificates, computer software copyright certificates, and international certifications like EU CE and ISO9001, you can trust the quality and reliability of the LDH small integrated liquid nitrogen machine. The company's focus on scientific and technological innovation, combined with its cooperation with international counterparts and domestic research institutions, ensures that the product incorporates the latest technology and industry - best practices. With a comprehensive after - sales service system, including 24 - hour technical support, regular maintenance, and remote monitoring assistance, you can rest assured that your investment is well - protected.


