Contact freezer, an indispensable equipment in the food industry, plays an important role in food preservation and processing. Its working principle is based on the heat exchange process between food and the cold environment, which helps to reduce the temperature of food quickly and effectively. In this article, we will learn more about Working principle of contact freezer and its importance in the modern food industry.
Structure - working principle of contact freezer
Contact freezer is an important equipment in the food industry, designed to quickly freeze food products. Below is the structure and operating principle of the contact freezer:
Structure of contact freezer
- Contact freezers consist of multiple shaking freezing plates inside.
- The distance between these plates can be adjusted by hydraulic cylinder, moving from 50 -105 mm.
- The shaker plates are made of aluminum alloy.
- The contact freezer door can use a 2-level folding hinge door or an insulated fabric rolling door.
Operating principle of contact freezer
- By taking heat from the top and bottom of the tray, after freezing, the core temperature of the product must reach a minimum of -18oC.
- A contact freezer operates most efficiently when it is fully insulated.
- Contact freezers are used to freeze block products, cakes, and raw materials.
Contact freezer is the best solution for small factories, helping to save budget and electricity costs.
See more: Secrets to Success When Making Cold Storage for Watermelon Preservation
Main components of contact freezer
Contact freezers are an important piece of equipment in the food industry, designed to rapidly freeze food products. Here are the main components of a contact freezer:
- Freezing Shaker Plate: Contact freezer consists of many shaking freezing plates inside. The distance between these plates can be adjusted by hydraulic cylinder and can move from 50 -105 mm.
- Material: The inside and outside of the cabinet are made of stainless steel. The shaking plates are made of special cast aluminum.
- Insulation: Cabinet insulated with PU foam spray, 150mm thick.
- Cabinet door: The cabinet doors are installed on both sides of the cabinet, the 4-door type is convenient for entering and exiting goods. There is a type without doors, the cabinet is covered with a plastic curtain.
- Cooling system: Contact freezer can be used for NH3, R22 or other types of gas.
- Hydraulic cylinder: Hydraulic cylinder lifts and lowers the shaking plates placed on the freezer. The piston and hydraulic cylinder guide rod are made of stainless steel to ensure hygiene.
The above components together with the operating principle of the contact freezer help to enhance cooling efficiency and ensure uniformity of temperature in the cabinet.
The role of fans in contact freezers
The fan plays an important role in the contact freezer, it helps to enhance the cooling performance and ensure the uniformity of temperature in the freezer.
How the fan works
- The fan blows cold air from the evaporator hidden inside the cabinet and transmits it throughout the cabinet to cool, freeze and preserve food in the best way.
- Cold air is circulated evenly in the refrigerator. No matter where food is placed, it will be preserved for the best long-term.
Advantages of fans
- The refrigeration system has a high level of safety, the refrigerant is non-flammable, non-explosive, and does not emit toxic substances that affect food.
- Indirect cooling mechanism using fan helps to cool faster, more evenly and more deeply than other direct cooling refrigerators.
Therefore, the fan is an indispensable part of the contact freezer, helping to enhance the cooling efficiency and ensure the uniformity of the temperature in the freezer.
See also: How to Operate a Freezer
Outstanding advantages of contact freezers
Contact freezers offer many significant benefits in the food industry, including:
- Fast, efficient freezing and product quality assurance: Contact freezers help reduce the temperature of food quickly, maintaining good product quality.
- Energy saving: Fast freezing time helps save energy.
- Durable and rust-proof material: The shaking plates are made of aluminum alloy, the internal and external parts of the cabinet are made of SUS 304 stainless steel and other anti-rust materials.
- Good insulation: Contact freezer is insulated with Polyurethane foam with density 40-43kg/m2.
- Complies with HACCP/FDA standards: Frozen products are compatible with HACCP/FDA standards.
- Easily select the specific freezing capacity required: Depending on the needs, users can choose the appropriate freezing capacity.
- Convenient design: The contact freezer is designed for convenient assembly, management and operation, cleaning and maintenance.
These advantages make contact freezers a popular choice for frozen food storage for both homes and food businesses.
Disadvantages of contact freezers
The contact freezer is an important industrial equipment, but like any other equipment, it has its disadvantages. Here are some of the disadvantages of contact freezers:
- Difficult to store foods with low storage temperatures such as fresh vegetables and fruits.
- It takes a lot of time to clean and defrost periodically..
- Foods easily absorb odors from each other..
- Risk of safety when pressure increases.
Therefore, when using contact freezers, users need to pay attention to these disadvantages to take timely preventive and corrective measures.
Applications of contact freezers
Contact freezers have many applications in different fields:
- Shops and supermarkets: Used to preserve and display frozen foods such as meat, fish, vegetables, ice cream, bottled drinks and packaged foods.
- Restaurants and hotels: Used to preserve raw food and prepared food for serving customers.
- Fast food and coffee shops: Used to preserve frozen foods such as meat, fish, french fries, packaged cakes and ice cubes.
- communal kitchen: Used to preserve frozen foods for educational, industrial or medical facilities.
- Family: Used to preserve frozen foods such as meat, fish, vegetables, processed foods and drinks for long-term use without having to buy them every day.
- Food industry: Used in the production, preservation and transportation of frozen foods.
These applications demonstrate the versatility and necessity of contact freezers in the storage and handling of frozen foods in a variety of environments.
Maintenance and cleaning of contact freezers
Maintaining and cleaning your contact freezer is important to ensure performance and food safety. Here are some steps you can take:
- Turn off the power: Before starting maintenance and cleaning, make sure the freezer is disconnected from the power source for safety.
- Clean the outer surface: Use a cleaning solution and a soft cloth to wipe the exterior surface of the freezer, making sure to remove any dirt and stains.
- Clean inside: Regularly clean the inside of the freezer with a mild detergent and warm water. Be sure to clean all areas, including shelves, drawers and drains.
- Check door seals and door seals including gasket: Check the door seal and gasket to ensure there are no gaps, clean or replace if necessary.
- Check cooling and drainage system: Check the cooling system and drainage system to ensure they are operating efficiently.
- Check and clean the dust filter: The dust filter may be clogged with dust and pet hair, check and clean the filter to ensure ventilation is not obstructed.
- Check temperature and adjust if necessary: Use a thermometer to check and adjust the temperature inside the freezer if necessary.
- Regular defrosting: If the freezer has an automatic defrost function, check and defrost regularly to ensure that the ice layer is not too thick and does not reduce cooling performance.
- Regular maintenance: Schedule regular maintenance to check and maintain the freezer, including checking the refrigeration system, checking indicator lights and other components.
By following the above steps regularly, you will keep your contact freezer running efficiently and storing food safely.
See also: IQF Mesh Conveyor
Tan Long - The most prestigious address specializing in providing contact freezers today
Tan Long is the leading prestigious address in the field of providing contact freezers today. With more than a decade of operation, Tan Long has affirmed its position in the frozen food preservation market.
Known for its professional and dedicated staff, Tan Long always provides dedicated consulting support and optimal solutions for customers. Contact freezer products at Tan Long are imported from reputable brands in the market, ensuring quality and performance.
Not only is Tan Long a product supplier, it also pays special attention to after-sales service, ensuring that customers are always supported during the use and maintenance of contact freezers.
If you are looking for a reliable address to buy a contact freezer, Tan Long is the top choice that you should not ignore. Coming to Tan Long, you will receive not only quality products but also dedicated and reliable care from a team of experienced staff.
Tan Long Refrigeration Electrical Engineering Company Limited
- Headquarters : 86 Dong Den, Ward 14, Tan Binh District, Ho Chi Minh City
- Factory: Lot MM3-2, Road No. 04, Duc Hoa 1 Industrial Park, Duc Hoa Dong Commune, Duc Hoa District, Long An
- Phone : (+84) 028 38494943 – 028 62937108
- Email : info@tanlongvn.com
- Website: tanlongvn.com
