Vacuum Freeze Dryer

I. Product Introduction

The freeze dryer is a device that uses vacuum freeze-drying technology to dry substances. Its basic principle is to first freeze a water-containing substance into a solid state, and then use the sublimation principle to make water sublime directly from solid to gas, thereby removing water and preserving the substance. Freeze dryers are widely used in medicine, biological products, food and other fields, and have the advantages of good drying effect, long preservation time and good rehydration.

II. Working Principle

Vacuum freeze-drying refers to a drying technology using the sublimation principle, in which the material to be dried is quickly frozen at low temperature and then, under a suitable vacuum environment, the frozen water molecules sublime directly into vapor and escape. This process does not cause concentration due to dehydration; the dried material is in a dry sponge-like porous form with essentially unchanged volume, is extremely easy to rehydrate and recover, and prevents to the greatest extent the physical, chemical and biological deformation of the dried substance.

III. Application Scope

1. Pharmaceutical industry: freeze dryers are widely used in the pharmaceutical industry, mainly for the production and preservation of drugs, biological products and medical devices. Through freeze-drying technology, water can be removed, the shelf life extended, and the efficacy of drugs and the activity of biological products guaranteed, while also facilitating transportation and storage.

2. Food industry: in the food industry, freeze dryers are used for the processing and preservation of fruits, vegetables, meat, aquatic products, condiments and other foods. Freeze-drying technology can retain the original color, aroma and nutrients of food, extend the shelf life, and facilitate carrying and storage.

3. Chemical industry: in the chemical industry, freeze dryers are used for the production and preservation of catalysts, chemical raw materials, pigments and other products. By removing water and volatile components, the quality and purity of the products are guaranteed.

4. Agricultural field: in agriculture, freeze-drying technology is used for the preservation and germination of plant seeds, removing water to extend the storage time and ensuring the germination rate of seeds.

5. Other fields: freeze-drying technology is also applied in environmental protection, energy, scientific research and other fields. For example, treating wastes such as sludge and wastewater, preparing fuels, and conducting research and preparation of materials.

IV. Product Features

1. Condensation system

(1) Original imported hermetic compressor, fast refrigeration and higher efficiency; new high-efficiency environmentally friendly refrigerant, environmentally friendly and fully compliant with national environmental protection requirements.

(2) Maximum water capture capacity of the cold trap ≥3 KG, working temperature ≤-60 ℃, uniform inner wall temperature, professional gas diversion design, which can achieve efficient freeze-drying and efficient water capture, protecting the vacuum pump.

(3) The cold trap adopts an external coil with a smooth internal surface free of obstructions, and has a sample pre-freezing function, so there is no need to equip an ultra-low temperature refrigerator or liquid nitrogen freezing equipment.

(4) The cold trap is made of 304 stainless steel, extremely corrosion-resistant, and its smooth surface is more conducive to defrosting.

2. Vacuum system

(1) Highly sealed vacuum chamber, with a chamber ultimate vacuum degree ≤10 Pa.

(2) Equipped with a vacuum micro-adjustment ball valve, enabling manual micro-adjustment of the vacuum degree.

(3) A customized vacuum generator specially suitable for freeze dryers, with a pumping speed of 2 L/s to quickly ensure the vacuum degree of the chamber.

(4) Pirani vacuum gauge, measuring the pressure in the chamber more accurately and ensuring the vacuum value is accurate and effective.

(5) Equipped with a KF25 quick-connect clamp to tightly connect the vacuum pump and the chamber.

(6) Optional vacuum pump oil mist filter to ensure the laboratory environment and reduce oil mist pollution.

3. Drying chamber system

(1) Maximum freeze-drying area 0.19 m² (standard type), material tray size φ200 mm. Supports expansion with multi-manifold freeze-drying bottles and eggplant-shaped bottles to further increase the freeze-drying area. (Equipped with multi-manifold bell jar.)

(2) The bell jar is made of highly transparent material, corrosion-resistant and not easily broken, convenient for observing the freeze-drying process of samples.

(3) The drying rack supports a capping function, and can freeze-dry samples contained in containers requiring capping such as vials (capping type).

(4) The number of shelf layers is adjustable, and the number of layers can be appropriately increased or decreased according to the number of samples.

(5) The shelf has a heating function, further resolving the bound water of the samples (heating type).

(6) Equipped with a Class A temperature sensor to accurately reflect the temperature at various points of the drying chamber.

4. Control system

(1) Adopts a 7-inch true-color LCD touch screen with a clear picture. Humanized interactive interface, easier to operate.

(2) Can clearly display various temperatures, vacuum degree and running time, allowing users to grasp the freeze-drying process of samples.

(3) Data is automatically saved, viewable in real time and reproducible historically. Data can be exported via USB for further analysis.

(4) Built-in automatic reminder function for the replacement and lubrication maintenance time of the compressor equipment and vacuum pump, which can proactively remind users to carry out corresponding maintenance on the vacuum pump and compressor.

(5) Password protection mechanism, convenient for equipment permission management and avoiding misoperation by non-professionals.

(6) Multiple sample protection mechanisms, such as prohibiting the vacuum pump from starting when the cold trap temperature is too high, avoiding sample boiling and damage.

V. Technical Parameters