Structure and working principle of contact freezer

Contact freezers, an indispensable equipment in the food industry, play an important role in food preservation and processing. Its working principle is based on the heat exchange process between food and cold environment, helping to reduce the temperature of food quickly and effectively. In this article, we will learn more about the working principle of contact freezers and its importance in the modern food industry.

Structure – working principle of contact freezer

Contact freezers are an important piece of equipment in the food industry, designed for quick freezing of food products. Below is the structure and operating principle of a contact freezer:

Structure of contact freezer

• Contact freezers include many shaking plates inside.
• The distance between these panels can be adjusted with a hydraulic bezel, moving from 50 -105 mm.
• The rocker panels are made of aluminum composite metal.
• The exposed freezer door can be used as a 2-level folding hinge door or as an insulated fabric rolling door.

Operating principle of contact freezer

• By taking heat from the top and bottom of the tray, after the freezing process, the product center temperature 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 freezers are the best solution for factories with small areas, helping to save budget and electricity costs.

See more: The Secret to Success When Making Cold Storage to Preserve Watermelon

The main components of the contact freezer

Contact freezers are an important piece of equipment in the food industry, designed for quick freezing of food products. Below are the main components of a contact freezer:

• Freezing shaking plates: Contact freezers include many freezing shaking plates inside. The distance between these panels can be adjusted with a hydraulic bezel and can be moved from 50 -105 mm.
• Materials: The inside and outside of the cabinet are made of stainless steel. The rocker panels are made of special cast aluminum.
• Insulation: Cabinet insulated with PU foam spray, 150mm thick.
• Cabinet doors: Cabinet doors are installed on both sides of the cabinet, 4-door type, convenient for entering and exiting goods. There are types without doors, the cabinet is covered with plastic curtains.
• Cooling system: Contact freezer can be used for NH3, R22 gas or other types.
• Hydraulic lift: Hydraulic lift lifts and lowers shaking plates placed on the freezer. The piston and hydraulic guide rod are made of stainless steel to ensure hygiene.

The above components along with the operating principle of contact freezers help enhance cooling performance and ensure temperature uniformity in the refrigerator.

The role of the fan in a contact freezer

The fan plays an important role in a contact freezer, it helps enhance cooling performance and ensure temperature uniformity in the refrigerator.

Operating mechanism of the fan

• The fan blows cold air from the condenser hidden inside the cabinet body and spreads it throughout the cabinet compartment to cool, freeze and preserve food in the best way.
• Cold air is circulated evenly inside the refrigerator. No matter where you place food, it will be best preserved for a long time.

Advantages of fans

• The refrigeration system has high safety, the refrigerant does not burn, does not explode, and does not emit toxic substances that affect food.
• Indirect cooling mechanism with fan helps cool faster, more evenly and deeper than other direct cooling cabinets.

Therefore, the fan is an indispensable part of a contact freezer, helping to enhance cooling performance and ensure temperature uniformity in the refrigerator.

See more: How to Operate a Air Freezer

Outstanding advantages of contact freezers

Disadvantages of contact freezers

A contact freezer is an important piece of industrial equipment, but like all equipment, it also has its disadvantages. Here are some disadvantages of contact freezers:

• It is difficult to store foods with low storage temperatures such as fresh vegetables, tubers, and fruits.
• It takes a lot of time to clean and defrost periodically.
• Food easily smells like each other.
• Risk of loss of safety when pressure increases.

Therefore, when using a contact freezer, users need to pay attention to these disadvantages to take timely preventive and remedial measures.

Application of contact freezer

Contact freezers have a wide variety of applications in different fields:

• Stores 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 foods and prepared foods for customer service.
• Fast food restaurants and cafes: Used to preserve frozen foods such as meat, fish, chips, packaged cakes and ice cubes.
• Collective kitchen: Used to preserve frozen food for educational, industrial or medical facilities.
• Family: Used to preserve frozen foods such as meat, fish, vegetables, prepared foods and drinks for long-term use without having to buy 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 preserving and handling frozen foods in a variety of environments.

Maintain and clean contact freezers

Maintenance and cleaning of contact freezers is important to ensure operational 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 outside surface: Use cleaning solution and a soft cloth to clean the outside surface of the freezer, making sure to remove dirt and stains.
• Clean the inside: Regularly clean the inside of the freezer with a mild cleaning solution and warm water. Be sure to clean all areas, including shelves, drawers, and drains.
• Inspect the door and include the gasket: Inspect the door and the gasket to ensure there are no leaks, and if necessary, clean or replace.
• Check the refrigeration and drainage system: Check the refrigeration and drainage systems to ensure they are operating effectively.
• Check and clean the dust filter: The dust filter may be clogged with dust and pet hair, check and clean the filter to ensure unobstructed ventilation.
• Check the temperature and adjust if necessary: ​​Use a temperature measuring device to check and adjust the temperature inside the freezer if necessary.
• Defrost regularly: If the freezer has an automatic defrost function, regularly check and defrost to ensure the ice layer is not too thick and does not reduce cooling performance.
• Routine maintenance: Schedule routine maintenance to inspect and maintain the freezer, including checking the cooling system, checking indicator lights and other components.

By performing the above steps on a regular basis, you will keep your contact freezer running efficiently and storing food safely.

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Tan Long – The most prestigious address specializing in providing contact freezers today

Tan Long is the leading reputable 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 to customers. Contact freezer products at Tan Long are imported from reputable brands in the market, ensuring quality and performance.

Not only is it a product supplier, Tan Long also pays special attention to after-sales service, ensuring 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 miss. 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 Mechanic Electric Refrigeration Joint Stock Company

• Head office: 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