Description
ABOUT US
Hangzhou Ouhui Machinery Co., Ltd, located near beautiful Xihu Lake with a favorable geographical location and convenient transportation is a technical manufacturer specializing in the design, research, manufacturing, and trading of different vacuum freeze dryers for the food industry, with drying areas from 0.5-200 sqm.
We have been keeping the management idea of credit first and customer supreme and owned an experienced after-sale service team for the installation and operation training of the machine. Nowadays our machines have been widely used in Asian, American, African, and European markets. You are warmly welcome to visit our factory and hope to establish a mutual benefit commercial
relationship with you soon.
We have a professional experienced design engineer team in the food drying, refrigeration engineering, and electrical automation industry. With more than 20 years of development, we are able to provide a one-stop technical solution for the freeze-drying of vegetables, meat, aquatic product, health product, and the pharmaceutical industry.
With continuous refinement and improvement on each working procedure of freeze drying, we are able to provide the most suitable design solution for the freeze drying of the food industry.
Machine features
- Small-type FD series freeze dryers and testing machines (FD 0.5, 1, 2, 3, 5, 10, 20, and 50 models) have adopted a single cold trap water impulse ice-melting system.
- The ice layer of the cold trap surface has used hot water for melting after each batch drying finish and the next batch drying can continue for 30 minutes after the ice water is completely discharged.
- A single cold trap ice-melting system can ensure the lowest investment cost of the machine.
- ●Medium and large type FD series freeze dryers (FD50, 100, 150, and 200 models) has adopted continuous multiple cold trap ice-melting system;
- There is an isolating valve between the cold trap and the drying valve, and the valve is sequentially closed during ice-melting in which water vapor at 25 degrees from a negative pressure steam generator is used. It will not come back to working status until the cold trap condenses to the working temperature and the original working vacuum is achieved after the ice-melting finish.
The advantage of using multiple cold trap system
- The condensation capacity of the cold trap remains constant;
- Thinner ice layer of the cold trap, high condensation efficiency, and low refrigerating energy consumption;
- Shorter downtime between drying batches and increased production output.
- Multiple cold trap systems can ensure the lowest operation cost for the machine.
FD series freeze dryers are batch-type freeze dryers, suitable for industrial production of food factories. The raw material is pre-frozen to negative 18°C with an external freezing device; The drying procedure has adopted radiation heat transfer, with even temperature and high heat transfer efficiency;
Suitable for different vegetables, fruits, meat, various processed food, and health products.
With continuous refinement and improvement on each working procedure of freeze drying, we are able to provide the most suitable design solution for the freeze drying of the food industry.
Small-type FD series freeze dryers and testing machines (FD 0.5, 1, 2, 3, 5, 10, and 20 models) have adopted a single cold trap water impulse ice-melting system. The ice layer of the cold trap surface has used hot water for melting after each batch drying finish and the next batch drying can continue 30 minutes after the ice water is completely discharged. A single cold trap ice-melting system can ensure the lowest investment cost of the machine.
Medium and large type FD series freeze dryers (FD50, 100, 150, and 200 models) have adopted continuous multiple cold trap ice-melting systems; There is an isolating valve between the cold trap and drying valve, and the valve is sequentially closed during ice-melting in which water vapor at 25 degrees from a negative pressure steam generator is used. It will not come back to working status until the cold trap condenses to the working temperature and the original working vacuum is achieved after the ice-melting finish.
The advantage of using multiple cold trap system
- The condensation capacity of the cold trap remains constant;2)Thinner ice layer of the cold trap, high condensation efficiency, and low refrigerating energy consumption;3)Shorter downtime between drying batches and increased production output.
- Multiple cold trap systems can ensure the lowest operation cost for the machine.
