Low temperature freezing disinfection cabinet

Low temperature freezing disinfection cabinet is a device that uses low-temperature freezing technology to disinfect and sterilize. The principle is to reduce the temperature to an extremely low level, causing bacteria, viruses, and other microorganisms to lose their activity, thereby achieving the purpose of disinfection. Low temperature freezing and disinfection cabinets are commonly used in fields such as using low-temperature freezing and drying methods for historical archives, cultural relics, textiles, and books, and for insecticidal and disinfection treatment of archives.

Introduction to Common Equipment Functions

1. Low temperature function: Low temperature freezer, with a low temperature of -40 ℃, reduced from room temperature to -40 ℃, and maintained at -35 ℃ for 48 hours.

2. Drying function: It has the function of eliminating water vapor in the air and maintaining the dryness of the archives (humidity in the cabinet is between 45% and 65%).

3. Insecticidal function: It can completely kill all pests (adults, larvae, eggs, pupae) in archives, collections, and cultural relics with a 100% killing rate.

4. Insecticidal methods: Frozen insecticidal, no heating, no pressure, no medication, no need for nitrogen flushing, no addition of any insecticidal auxiliary materials, no increase in usage costs, elimination of any harmful physical and chemical components and methods, non-toxic, pollution-free, radiation free, odorless, and without any side effects on human body, environment, and collectibles.

5. Crystallization function: During the disinfection process, it can cause the liquid inside the insect body to crystallize, destroying the proteins of adult insects, larvae, eggs, and pupae.

6. Disinfection function: It can kill microorganisms in the archives.

7. Protection function: During the process of insecticide disinfection, protect the archives from any physical and chemical damage.

8. Microcomputer control, digital display box temperature, adjustable temperature inside -10 ℃~40 ℃, temperature adjustment accuracy of 0.1 ℃.

9. Environmental temperature display, power-off memory function.

10. High and low temperature alarm control, the alarm temperature point can be set as needed.

11. Multiple fault alarms: high and low temperature alarm, sensor fault alarm, power outage alarm, battery undervoltage alarm.

12. Multiple alarm methods: sound buzzing alarm, flashing light alarm, and remote alarm can be connected.

13. Multiple protection functions: startup delay, shutdown interval, etc., can effectively protect the compressor.

14. Adopting imported international brand Danfoss high-efficiency compressor, the refrigeration is fast. German brand EBM fan motor.

15. Fluorine free foam 100mm thick high-density insulation layer, ultra microporous foam technology, good insulation effect.

16. Environmentally friendly fluorine free refrigerant, green and environmentally friendly.

17. Multi layer shelf evaporator provides rapid cooling and more uniform temperature inside the box.

18. Quick freezing function. Reasonably optimize the design of the evaporation and condensation system for strong refrigeration.

19. Double door design, each door is equipped with a safety lock to prevent unauthorized opening, making it easy for multiple people to use and ensuring storage security.

20. Wide voltage band design, suitable for 187-242V voltage use, suitable for use in areas with unstable voltage.

21. There are 10 independent drawers with an effective capacity of 525L, making it more convenient to store items by category.

22. The door lock has a locking function and a double-layer sealing structure design for better insulation performance.

23. The metal handle design makes it easier to open and close the door.

24. The universal wheel is designed with independent fixed feet, making it easy to move and stable to fix.

25. Pre installed temperature measuring holes on the back for easy use by users.

26. The door frame heating design prevents frosting at the sealing strip and ensures that the box door is sealed and closed.

27. Archives, cultural relics, and books require only 48 hours for insecticide and sterilization

The operation method of low-temperature freezing disinfection cabinet is as follows:

1. Preparation work: Place the items that need to be disinfected into the disinfection cabinet, ensuring sufficient space between the items for air conditioning circulation.

2. Set temperature and time: Set appropriate temperature and time according to the type of items that need to be disinfected and disinfection requirements. Generally speaking, the temperature range of a low-temperature freezer disinfection cabinet is -20 ℃ to -80 ℃, and the time can be adjusted according to the actual situation.

3. Start disinfection cabinet: Press the start button of the disinfection cabinet to start disinfection.

4. Monitoring the disinfection process: During the disinfection process, it is necessary to regularly monitor the temperature and time inside the disinfection cabinet to ensure the disinfection effect.

5. Complete disinfection: After disinfection is completed, close the disinfection cabinet and remove the disinfected items.

Technical Specifications

We have briefly introduced the low-temperature freezer disinfection cabinet here. It should be noted that when using the low-temperature freezer disinfection cabinet, relevant safety operating procedures should be followed to ensure personal safety and normal equipment operation. And during the insecticide treatment of archives, it is necessary to wrap the archive materials with plastic film and then freeze them for insecticide treatment to prevent condensation on the surface of the archive box after the insecticide treatment is completed and the box is taken out of contact with room temperature (temperature difference).

The working principle of the low-temperature freezing disinfection cabinet is mainly based on the methods of low-temperature freezing and drying. The following is a detailed explanation of its working principle:

Low temperature function

The low-temperature freezer disinfection cabinet can reduce the temperature inside the cabinet to an extremely low level, such as -40 ℃, through its refrigeration system. This low-temperature environment is deadly for many microorganisms and pests because they cannot survive or reproduce at low temperatures. After reaching the required low temperature, the disinfection cabinet will be kept for a period of time (such as -35 ℃ for 48 hours) to ensure the disinfection effect.

Drying function

In addition to low temperature, the low-temperature freezer disinfection cabinet also has a drying function. By reducing the humidity inside the cabinet, the growth and reproduction of microorganisms can be further inhibited. Usually, the humidity inside the cabinet is controlled between 45% and 65% to maintain the dryness of the files.

For some low-temperature disinfection cabinets, their working principle may also include using ozone for disinfection. Ozone is a highly reactive and unstable colorless gas with strong oxidizing properties. When ozone comes into contact with other substances, it quickly reduces to stable oxygen and oxidizes the substances it comes into contact with. In a low-temperature disinfection cabinet, an ozone generator generates ozone and kills bacteria through the strong oxidation effect of ozone, achieving the purpose of disinfection.

In addition, low-temperature disinfection cabinets are usually equipped with temperature control systems and circulating air systems. The temperature control system can accurately regulate the temperature inside the cabinet to ensure that the disinfection process is carried out within the appropriate temperature range. The circulating air system can guide the air to circulate inside the cabinet, achieve uniform temperature distribution, and improve disinfection effectiveness.

Low temperature freezing and disinfection cabinet is a device that integrates low-temperature freezing and disinfection functions. Its application fields are wide, including archives and cultural fields, medical fields, scientific research and teaching, and other fields. Below are brief introductions:

In the field of archives and cultural heritage:

The low-temperature freezing disinfection cabinet can perform low-temperature freezing and drying treatment on historical archives, cultural relics, textiles, books, etc., effectively killing pests (including adults, larvae, eggs, pupae) and microorganisms, while maintaining the dryness of the archives and preventing mold growth.

This device does not increase any usage costs during the insecticidal and disinfection process, eliminates any harmful physical and chemical components and methods, is non-toxic, pollution-free, radiation free, odorless, and has no side effects on the human body, the environment, and the collection.

Medical field:

Low temperature freezer disinfection cabinets can be used for sterilization of temperature sensitive medical devices and supplies, such as endoscopes, surgical instruments, gauze, dressings, etc., to ensure their use in a bacterial state and reduce the risk of infection.

At the same time, it can also be used to preserve biological products such as drugs, vaccines, and blood products, ensuring that they do not deteriorate in low-temperature environments.

Research and Teaching:

In biological experimental research, low-temperature freezing disinfection cabinets can be used to process various biological samples, such as cells, tissues, etc., to eliminate microbial contamination and ensure the accuracy and safety of experiments.

Meanwhile, it can also be used to preserve experimental samples, ensuring their stable storage in low-temperature environments.

Other fields:

Low temperature freezing disinfection cabinets can also be applied in the textile industry, electronics industry, and other fields to sterilize textiles, electronic devices, etc., preventing performance degradation or failure caused by microbial contamination. In the field of agriculture, it can be used for low-temperature preservation of seeds and seedlings, extending their preservation time.

Model: DCDWLD-L1

Brand: Dachang

Size: 1.00 cubic meter

Dimensions: Length 1200mm * Width 850mm * Height 1800mm

Internal dimensions: length 900mm * width 700mm * height 1600mm

Archive box size: 224-232cm

Voltage: 220V/50Hz

Power: 1.5kw

Temperature: -10~-40 ℃

Material: Stainless steel polyurethane foam material

Manufacturer: Ganzhou Dachang Air Conditioning Equipment Engineering Co., Ltd

Shipment date: January 19, 2019

Transportation method: Freight logistics