Ceiling Infrared Radiant Panel Heating for Laminar-Flow Clean Rooms
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Solution Overview
Problem
Existing heating methods in clean rooms, such as operating theaters, cause air turbulence and temperature fluctuations, disrupting laminar air flow and compromising cleanliness and surgical outcomes due to convection from wall heaters and slow temperature regulation.
Innovation Solution
Infrared radiation surface heating system installed flush into the ceiling with vertically aligned radiation, using thermally conductive materials and insulation to minimize turbulence and provide precise temperature control, with optional resistance heating wires or heating foils and integrated temperature sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If wall heaters are used to heat the clean room, then the room temperature can be maintained, but air turbulence and temperature fluctuations occur that disrupt laminar air flow
Solution Approach 1:
The patent replaces conventional convection-based wall heaters with an infrared radiation heating system. The infrared heater emits radiant energy that directly heats surfaces and objects without heating the air, thereby eliminating convective air currents and turbulence that would disrupt the laminar flow in the clean room environment.
Solution Approach 2:
The patent introduces an intermediate medium (infrared radiation) between the heat source and the objects to be heated. Instead of directly heating the air which causes convection, the infrared radiation first heats surfaces and objects, which then transfer heat to the air through conduction and radiation, minimizing air turbulence while maintaining temperature control.
2Temperature
If conventional heating systems are used, then heating can be provided, but temperature control is slow and temperature fluctuations cannot be regulated quickly
Solution Approach 1:
The patent employs a control system that periodically monitors temperature and adjusts the infrared heater operation accordingly. The safety thermostat and temperature sensor continuously detect temperature changes and provide feedback control, enabling rapid response to temperature fluctuations and precise maintenance of the desired temperature range without delays.
Solution Approach 2:
The patent implements a feedback control mechanism using temperature sensors and safety thermostats that continuously monitor the room temperature and adjust the heating system operation. This closed-loop control enables rapid detection of temperature changes and immediate correction, eliminating the slow response characteristic of conventional heating systems.
3Temperature
If wall heaters are installed to provide heating, then heat can be distributed, but the heating system is complex and requires extensive wall surface installation
Solution Approach 1:
The patent extracts the heating function from the wall structure and concentrates it into a single ceiling-mounted infrared radiation unit. Instead of installing heating elements throughout the wall surfaces, the system uses one or more ceiling-mounted infrared heaters that radiate heat throughout the room, significantly simplifying installation while maintaining effective heating capability.
Solution Approach 2:
The patent designs the ceiling-mounted infrared heater to serve multiple functions: providing uniform heating, maintaining temperature control, and preserving the architectural integrity of the room. The single unit replaces what would otherwise require extensive wall-mounted heating elements, demonstrating multi-functionality that reduces overall system complexity.
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
Achieves even heating with minimal air turbulence, precise temperature control, and fast adjustments, ensuring a stable laminar air flow and maintaining cleanliness in clean rooms by directing heat downward and preventing heat loss above the ceiling.
Implementation Method 1
a heater (40) is provided which heats the interior (22) of the clean room (2) from the ceiling (21). The direction of the infrared radiation emanating from the infrared radiant surface heating (40) is aligned vertically downwards
Implementation Method 2
The door panel of the inspection door serves as a thermally conductive radiant panel on which the radiant heater assembly is provided. Accordingly, the radiant panel consists of a material with good thermal conductivity, which can easily dissipate the heat generated by the radiant heating arrangement to the interior of the clean room
Implementation Method 3
The heat-resistant insulation provided above the radiant heating arrangement also largely prevents the heat generated by the radiant heating arrangement from being given off to an area above the ceiling of the clean room. The generated radiant heat is thus almost completely available for heating the clean room
Data Source
AI summary
The present invention includes an infrared radiation panel heater for a clean room, with the infrared radiation panel heater being integrated into an inspection door which is intended for flush installation in a ceiling of the clean room, the door panel of the inspection door being designed as a thermally conductive radiant panel on whose im installed state facing away from the interior of the clean room plate inner surface, a radiant heating arrangement is provided; on the side of the radiant panel facing away from the interior of the clean room in the installed state, insulation that is heat-resistant up to at least 150° C. is provided above the radiant heating arrangement; the inspection door has a disinfectant-resistant outer surface that is aligned with the interior of the clean room when the inspection door is installed; and the infrared radiation panel heater has at least one safety thermostat. The invention also relates to a clean room arrangement equipped with the infrared radiation surface heating according to the invention.