Product Description
The central‑kitchen microwave heater adopts high‑frequency 2450MHz microwave energy, directly acting on polar water molecules inside chilled pre‑prepared dishes, frozen portioned meals, boxed group‑catering meals, semi‑finished dishes and packaged ready‑to‑eat food from central‑kitchen production lines. Water molecules vibrate, rub and collide at an ultra‑high frequency of 2.45 billion times per second, converting electromagnetic energy into thermal energy to realize volumetric inside‑out tempering, thawing, reheating and pasteurization for mass‑produced central‑kitchen food.
Different from traditional steam heating and hot‑air tunnel equipment relying on surface heat conduction, microwave features strong penetrating volumetric heating. It effectively solves typical central‑kitchen processing pain‑points: surface over‑heating while food core remains cold, dried‑out rice, mushy vegetables, sauce loss, large temperature deviation among individual meal portions and unstable batch‑to‑batch product quality.
During operation, sealed meal containers are orderly arranged on food‑grade wear‑resistant conveyor belt and continuously transported into multi‑cascaded microwave tunnel cavities with adjustable conveying speed. Microwaves penetrate packaging and heat rice, meat and vegetable ingredients simultaneously from inside to outside, rapidly raising food core temperature and inhibiting pathogenic bacteria. The matched exhaust‑dehumidification system timely discharges water vapor and condensate inside cavity, completing continuous integrated thawing, reheating and pasteurization within one production pass.
Uniform microwave thermal field avoids local over‑cooking. It retains moisture, original flavor and nutritional components of central‑kitchen dishes, keeps rice soft and vegetable texture intact. It improves food safety for cold‑chain logistics, group‑meal distribution and large‑scale meal‑supply scenarios.
Main Advantages
1. Volumetric Inside out Heating, High throughput for Central kitchen Mass Production Adopts molecular volumetric heating instead of surface heat transfer. Food materials are heated simultaneously from inside to outside while passing through tunnel cavity. It eliminates icy core, cold centre, scorched edges and uneven temperature difference. Processed meals maintain consistent taste and stable core temperature, greatly raising finished product qualification rate for large batch central kitchen production.
2. Segmented Controllable Heating, Preserve Dish Texture & Nutrients Supports multi segment power adjustment for thawing and reheating stages. Short time rapid thermal treatment reduces nutrition loss and juice dripping. Rice stays soft, vegetables avoid over cooking, sauce evaporation is minimized. Especially suitable for large batch chilled or frozen pre cooked dishes, group catering boxed meals with strict requirements for taste and processing efficiency.
3. PLC Intelligent Process Control, Easy Integration for Central kitchen Production Lines Equipped with PLC touch screen control system; microwave power, conveyor speed, cavity temperature and exhaust air volume support stepless adjustment. Multiple group processing recipes can be stored for quick switching, adapting to different packaging forms, meal weights and initial temperatures of central kitchen products. Modular integrated tunnel structure supports customized tunnel length and belt width, convenient for parameter debugging and daily cleaning & maintenance complying with central kitchen hygiene rules.
4. Uninterrupted Automatic Operation, Synchronous Pasteurization & High Food safety Level Multi stage microwave suppression devices are installed at tunnel inlet and outlet, ensuring microwave leakage complies with international safety standards. Fully automatic tunnel type assembly line enables non stop high throughput production. It can be seamlessly docked with upstream packaging machines and downstream boxing & conveying lines. Microwave achieves synchronous pasteurization to inhibit mould and harmful microorganisms, improving food safety for school canteens, enterprise group catering and export grade central kitchen food products.
Equipment Composition
The central kitchen microwave heater is fully automatic conveyor tunnel assembly line made of SUS304 food grade stainless steel modular design, complying with central kitchen GMP food processing hygiene standards. The complete set includes feeding station, meal positioning section, multi cavity microwave heating tunnel body, exhaust dehumidification system, online multi point infrared temperature monitoring unit, microwave leakage suppression device, PLC intelligent control cabinet and automatic discharging unit. It is specially designed for large scale standardized continuous thawing, reheating and pasteurization of various chilled and frozen pre prepared dishes in central kitchen workshops.
Application Fields
Custom‑developed for large‑scale central‑kitchen factories, group‑catering enterprises, food distribution centers, school and enterprise canteen meal‑supply workshops, cold‑chain food manufacturers. Widely used for continuous microwave tempering‑thawing, reheating and pasteurization of central‑kitchen pre‑prepared food. Processed meals achieve uniform core temperature and high food‑safety performance.
