Low temperature cold trap/capture pump
Capture water vapor and harmful gases emitted from vacuum drying boxes or vacuum concentration devices, improve the efficiency of the vacuum system, significantly reduce the steam intake of the vacuum pump, and extend the service life of the vacuum pump.
Cryogenic Refrigeration Unit
Low temperature cold trap/capture pump
- Main features
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The -145°C cryogenic water vapor freezer developed and produced by the company adopts a single compressor, automatic cascade refrigeration method, imported brand-name compressor and refrigeration accessories, and environmentally friendly hybrid refrigerant production, replacing liquid nitrogen and saving costs. It has the characteristics of fast refrigeration speed, high efficiency, low temperature and convenient maintenance, and its performance indicators are in a leading position, reaching or even exceeding the international advanced level. More than 40% energy saving than similar domestic products.
Products are widely used in vacuum coating, surface treatment, optoelectronics, aerospace, quartz crystals, solar collectors, scientific research institutes, biopharmaceutical, chemical, electronic industry, metal processing and other industries.
Application principle of cold trap (-45°C~-135°C):
There are certain residual gases in the high vacuum environment using oil diffusion pumps, more than 80% are water vapor, oil vapor and other high boiling point steam, but its ability to extract residual gases is low, long time, and the residual gas is also a source of pollution of the workpiece, so that the output and quality of the product are affected, ultra-low temperature capture pump is the best choice to solve the problem.
There are certain residual gases in the high vacuum environment using oil diffusion pumps, more than 80% are water vapor, oil vapor and other high boiling point steam, but its ability to extract residual gas is low, the time is long, and the working principle of the residual water vapor capture pump: a refrigeration coil that can reach below -130 °C is placed in the vacuum chamber or the pump port of the oil diffusion pump, and the residual gas of the vacuum system is quickly captured through the low-temperature condensation effect on its surface. As a result, the evacuation time can be greatly shortened (60-90% of the pumping time can be shortened) and a clean vacuum environment is obtained (the vacuum degree can be increased by half an order of magnitude, reaching 10-8Torr, 10ˉ5Pa).
The working principle of the water vapor capture pump: a refrigeration coil that can reach below -130 °C is placed in the vacuum chamber or the pump port of the oil diffusion pump to quickly capture the residual gas of the vacuum system through the low-temperature condensation effect on its surface. As a result, the evacuation time can be greatly shortened (60-90% of the pumping time can be shortened) and a clean vacuum environment is obtained (the vacuum degree can be increased by half an order of magnitude, reaching 10-8Torr, 10ˉ5Pa).
Production volume requirements of each customer. There are differences in product temperature requirements and site size and location, and we will provide them according to your special needs. Design the perfect solution. Special quick-freezing can be tailored according to various materials and production process characteristics. Refrigeration equipment, according to the customer's actual production of different working conditions for temperature point demand, targeted to adopt the optimal combination of freezing. The cooling method to achieve the expected production process requirements is our company's unique advantage. Our company can design targeted freezing according to the different needs of users. Cooling scheme. The temperature from -30 °C ~ -120 °C can meet the food. Chemical, pharmaceutical, electronic. The demand for low temperatures in different aviation industries. And to provide users with planning, engineering design, construction, installation, equipment production and maintenance integration services. The project content includes: refrigeration system, automatic control system, electrical control, pipeline insulation, installation and other projects turnkey projects.
1. Can shorten the pumping time of 30%~80% 2. Can improve production capacity by 30%~100%
3. It can be quickly cooled and reheated, and can be recycled for a long time
4. Dual-way load can be designed, and installed in the vacuum chamber and oil diffusion pump port at the same time
5. There is no need to use expensive liquid nitrogen, which can quickly recover the cost
6. Siemens PLC+ touch screen control is adopted, and the control is accurate
7. It can be flexibly installed on the existing vacuum coating system, and the installation is simple, not affected by joints, intake pipes and valves
8. The system is stable, easy to operate and easy to maintain
Cold trap (-45°C~-135°C) use characteristics:
Capture the water vapor and harmful gases discharged from the vacuum drying box or vacuum concentration device, improve the efficiency of the vacuum system, greatly reduce the steam intake amount of the vacuum pump, and extend the service life of the vacuum pump.
1. The temperature display of the cold trap is convenient to control the starting time of the vacuum pump and prevent the water in the piping from being pumped into the pump.
2. The cold trap tank is made of SUS 304 stainless steel, which can be used for aqueous and ethanol-based experiments, and can be applied to acid-based and organic solvent-based experiments after being equipped with a glass condenser.
3. It can be used as a pre-freezing tank and a low-temperature tank.
4. Equipped with drain valve to facilitate drainage.
5. Ultra-low temperature cold trap, ultra-low temperature capture pump, vacuum coating freezer, cascade low temperature freezer can provide 0 °C ~ -135 °C cryogenic liquid cooling source-, ultra-low temperature capture pump, refrigeration unit compressor adopts German BITZER Bitzer, American Copeland Copeland, and other brands; Imported semi-hermetic screw compressor or fully hermetic scroll compressor as the refrigeration host, the main components are Danfoss, ALCO, American merson and other international well-known brands; It has stable performance, energy saving and high efficiency. Ultra-low temperature trap pump. Vacuum coating freezer, low-temperature cascade low-temperature freezing unit adopts advanced PLC and microcomputer control system, which has the characteristics of stable performance, safety and reliability.
Maximum operating pressure
Refrigeration pipe surface area
Refrigeration pipe length and outer diameter
Connection pipe length and outer diameter
Air intake (m, mm)
Return air (m, mm)
Cooling water flow
Cooling water pipe diameter
Rated voltage, current
Oil distribution expansion pump caliber
Dual or multi-way cooling is possible
Dual or multi-way cooling is possible
With vacuum chamber diameter
Packaging and shipping
formulate a scheme
Customer determines the plan
Understand customer needs