Double-side contact grill
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Solution Overview
Problem
Commercial double-sided contact grills with electric heating tubes consume excessive power, have slow heating speeds, limited temperature, and insufficient continuous production capacity.
Innovation Solution
A double-sided contact grill utilizing a combination of infrared radiant heating and conductive heating, with one heating plate being transparent to allow infrared radiation and the other having a high-temperature resistant and anti-sticking layer, along with grease management features to enhance heating efficiency and prevent food sticking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If electric heating tubes are used to heat metal surfaces, then the grill can achieve double-side heating, but the heating speed is slow and the temperature is limited
Solution Approach 1:
The heating system is segmented into two independent heating devices: an infrared radiant heater and a contact heater. Each heater operates independently to heat its respective heating plate, allowing simultaneous radiant and conductive heating of food from both sides, thereby increasing overall heating speed and temperature capability
Solution Approach 2:
The patent combines two different heating methods (infrared radiant heating and contact conduction heating) into a single grill system. The infrared heater rapidly heats the transparent heating plate for radiant heating, while the contact heater maintains the metal heating plate for direct conduction heating, achieving synergistic effect that overcomes the limitations of either method alone
2Power
If electric heating tubes are used for heating, then double-side heating is achieved, but more power is consumed
Solution Approach 1:
The patent changes the heating parameters by introducing infrared radiation which directly heats the food and transparent heating plate without requiring the metal plate to reach extremely high temperatures. The infrared heater operates at lower power consumption while achieving rapid heating效果, and the contact heater supplements only where needed, reducing total energy consumption compared to traditional high-power electric tube heating
3Reliability
If traditional heating plates are used, then heating function is provided, but food sticking occurs and cleaning is difficult
Solution Approach 1:
The patent applies different surface properties to different heating plates: the transparent heating plate uses infrared radiation which naturally reduces sticking, while the metal heating plate is equipped with a non-stick coating on its food-contact surface. This localized quality differentiation ensures anti-sticking performance where needed while maintaining heating functionality
Solution Approach 2:
The patent converts the potential harm of food sticking and grease accumulation into benefit by designing an oil guide groove system that actively directs grease and debris away from the heating plates into a collection box. This transforms the cleaning problem into an automated grease management solution
4Productivity
If continuous production is required, then higher output is needed, but current grills have insufficient continuous production capacity
Solution Approach 1:
The patent enables continuous production by allowing both heating plates to operate simultaneously and independently. While one side is being cooked, the other side can be prepared or cooked, eliminating idle time. The infrared heater provides rapid initial heating to reduce cooking time, and the contact heater maintains consistent temperature for continuous cooking operations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The combination achieves rapid heating with less energy consumption, supports continuous production, and facilitates easy cleaning by preventing food sticking, thus improving heating efficiency and productivity.
Implementation Method 1
One of the upper heater and the lower heater is an infrared heater for radiant heating of the food by radiating infrared energy to the food
Implementation Method 2
the other of the upper heater and the lower heater is a contact heater configured to heat the food by conduction between the heating plate and the food to be cooked
Data Source
AI summary
A double-sided contact grill, includes an upper heating device and a lower heating device. The upper heating device includes an upper heating plate and an upper heater located on the upper side of the upper heating plate. The lower heating device includes a lower heating plate and a lower heater located on the lower side of the lower heating plate. One of the upper heating device and the lower heating device is a radiant heating device, and the other is a conductive heating device.