Blast Chiller

Introduction and Meaning

A blast chiller is a professional appliance primarily used in the restaurant and pastry industries to rapidly cool food, ensuring optimal preservation and hygienic safety.

This equipment is essential for complying with HACCP regulations, as it quickly lowers the temperature of cooked food, reducing bacterial growth. Blast chillers are widely used in restaurants, pastry shops, food laboratories, butcheries, and gelato shops to enhance food quality and extend shelf life while preserving flavor, color, and nutritional properties.

Technical Features and Differences

Blast chillers are divided into two main categories:

  • Positive Blast Chillers: Reduce the food temperature from +90°C to +3°C in less than 90 minutes. This function is ideal for food that will be stored in a refrigerator, maintaining its quality.

  • Negative Blast Chillers: Lower the temperature from +90°C to -18°C in about 4 hours, allowing rapid freezing while preventing the formation of large ice crystals that could damage the food's cellular structure.

Besides these types, blast chillers may have different technical features:

  • Capacity: Ranges from small units with 3-5 trays to industrial models with over 20 trays.

  • Cooling System: Can be air-cooled or water-cooled, with the latter being more efficient in high-temperature environments.

  • Power Supply: Generally electric, with varying levels of energy consumption.

  • Advanced Functions: Some models include core temperature probes to measure the internal temperature of food and automatic cooling cycles to optimize processing times.

Summary Table of Technical Specifications

FeaturePositive Blast ChillerNegative Blast Chiller
Final Temperature +3°C -18°C
Cooling Time 90 min 4 hours
Main Purpose Rapid refrigeration Rapid freezing
Ice Formation No Minimal
Applications Restaurants, pastry shops Laboratories, catering

Applications and Best Practices

Blast chillers are widely used in various HO.RE.CA. businesses, including:

  • Restaurants: Allow for preparing large amounts of food in advance while maintaining freshness and reducing waste.

  • Pastry shops and bakeries: Ideal for quickly cooling creams, doughs, and desserts while preserving texture.

  • Gelato shops: Helps in the crystallization process, improving the gelato's texture.

  • Catering and banqueting: Preserves ready-made dishes for events without compromising quality.

  • Butcheries and fish markets: Prevents bacterial growth on meat and fish, ensuring safer storage.

How to Choose the Right Model

Workload: How many trays or kilograms of food do you need to chill at once?
Available Space: Smaller models fit well in compact kitchens.
Cooling System: Air-cooled for versatility, water-cooled for high-temperature environments.
Additional Features: Core probes, customizable cycles, touch screens, and Wi-Fi connectivity for remote monitoring.

Frequently Asked Questions (FAQ)

❓ What is the difference between a blast chiller and a freezer?
???? A blast chiller rapidly cools freshly cooked food to preserve quality and food safety, while a freezer maintains food at low temperatures for extended storage.

❓ Are blast chillers mandatory in restaurants?
???? Not always, but they are strongly recommended for HACCP compliance and better food management.

❓ Can I use a blast chiller for gelato?
???? Yes, blast chillers help quickly crystallize gelato, improving its structure and creaminess.

❓ What is the energy consumption of a blast chiller?
???? It depends on the model and capacity, typically ranging from 0.8 kWh to 5 kWh per cycle. Some newer models offer energy-saving modes.

Go to products:  Blast Chillers

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