How Much Does a Freeze Dryer Cost
There are many kinds of food freeze dryer supplier, which can be used for home use or large-scale production. So how much is the price of a food freeze dryer? Generally speaking, the price of a food freeze dryer is mainly related to the freeze-drying area. The larger the freeze-dried area, the greater the amount of freeze-dried, and the price will naturally go up. Small household food freeze dryers cost about 20,000 yuan, and large food freeze dryers for mass production range from hundreds of thousands to one million yuan. Freeze dryers can be applied to freeze-dried foods, and those that specialize in freeze-dried foods are called food freeze dryers. The price of food freeze dryers on the market mainly depends on the freeze-drying output, function, model, parameter configuration, brand, etc., ranging from 20,000 yuan to millions of yuan. When purchasing a food freeze-drying machine, mainly purchase a freeze-drying machine with a suitable freeze-drying area according to the needs, and pay attention to comprehensively consider the temperature of the cold trap, the cooling rate, the ultimate vacuum degree, the vacuuming time, the temperature uniformity and flatness of the plate layer, and the control system parameters. Let's take a look at how much a food freeze dryer costs.
What are the main parameters to consider when buying a freezer?
The freeze-drying machine is used to freeze-dry food. When choosing, mainly refer to the following seven parameters:
1. Freeze-dried area
For a freezer with a large freezer area, calculate and specify as necessary. The number in the model of the freeze dryer represents the freeze-drying area of the freeze-dryer, for example, the freeze-drying area of the freeze-dryer is 0.18㎡. For a freezer with a large freezer area, calculate and specify as necessary. For example, each batch of products with a liquid volume of 1.8 kilograms (liters) needs to be freeze-dried, and the material is loaded in a material tray, and each tray is loaded with a thickness of 10 mm, then the load area of the freeze-dried layer can be calculated: A (area, ㎡) = V ( Volume, m)/H (height, m)=0.0018m/0.01m=0.18㎡. This means that you need to choose a lyophilizer with a loading area of 0.18 square meters.
2. Cold trap temperature
The cold trap is a device that captures water in the freeze-drying process, and the cold trap is a device that captures water in the freeze-drying process. In theory, the lower the temperature of the cold trap, the stronger the water-capturing ability of the cold trap, but the lower the temperature of the cold trap, the refrigeration requirements are. High machine cost and high operating cost. The cold trap temperature of the experimental series freeze dryer mainly has several grades such as about -45°C, about -60°C, and about -80°C. Freeze-drying with a cold trap temperature of -45°C is suitable for some products that are easy to freeze-dry. Freeze-drying machines with a cold trap temperature of about -60°C are suitable for freeze-drying of most products. Lyophilization at a cold trapping temperature of -80 ° C Suitable for lyosting some special products. We tested the effect of cold traps on water capture capacity when the temperature of the cooling trap was lowered from -35 ° C to -55 ° C. This has greatly improved the water capture capacity. Therefore, there are no special requirements. It is desirable to use a cold capture temperature of -60 ° C.
3. Cooling rate
The cooling ratio reflects the cooling capacity of the cooling system. Without load, the temperature of the cooling trap must reach the minimum temperature indicated in the index within one hour. For example, if the cold trap is freezer drying below -60 ° C, the machine will start measuring the time since the machine was turned on for cooling and the color time even when the heater temperature reaches. Do not exceed 60 ° C. Do not exceed 1 hour.
4. Ultimate vacuum degree
The final degree of vacuum reflects the leakage of the freezer and the pump efficiency of the vacuum pump. The degree of vacuum in the freeze-drying box. In the past, the higher the degree of vacuum, the better. In the current situation, the vacuum ratio should be within acceptable limits. The degree of vacuum is very high, does not contribute to heat transfer and the drying rate is slow, but in either case the limit when not loading the lyophilization box should be greater than the 15Pa vacuum limit.
5. Vacuum time
The emptying rate of the emptied lyophilisation box must be pumped from atmospheric pressure to 15 Pa within 30 minutes.
6. Board temperature uniformity and uniformity
Board temperature uniformity and flatness have a significant impact on product quality uniformity. The higher the uniformity of temperature and flatness, the higher the uniformity of quality of lyophilized products. There are two types of freezer drying racks: temperature control heater type and medium liquid type. Dry cooling racks with an intermediate layer for fluid control have excellent temperature uniformity and flatness. This lyophilized plate layer is an empty sandwich structure. Cooling and heating of the plate is achieved by circulating the medium liquid in the liquid channel inside the plate, so the temperature of the plate is uniform. The lyophilizer uses fluid technology in the center of the rack. In general, the temperature difference between the layers of the medical freeze dryer should be controlled at ±1.5°C, and the temperature difference inside the plate should be ±1°C, and the food freeze dryer can be appropriately relaxed.
7. Control system
There are various types and functions of freeze-dryer control systems. In a series of experimental lye dryers, it is used primarily to investigate the freezing process of materials and to make small prototypes. Therefore, the control system should be able to display the freeze-drying process parameters in real time and automatically record; set, modify and effectively execute the freeze-drying process program; It has a communication interface that facilitates data collection and storage.
Please look for Zhengzhou Keda to buy freeze dryers. With years of sales experience, we can provide you with preferential freeze dryer prices and have a full range of after-sales services. You can buy with confidence and learn more freeze dryer information and quotations , welcome to email: [email protected]
