Direct-Contact Bottle Heating Surface to Prevent Milk Hot Spots
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Solution Overview
Problem
Existing baby bottle warmers are inefficient in heating milk due to poor heat transfer mechanisms, often requiring extended time and energy, and can damage nutrients with hot spots, especially when using microwaves or water baths.
Innovation Solution
A heating device with a direct heat transfer surface that contacts the fluid, sealed to the container to prevent spillage and enhance convection, using a material with a positive temperature coefficient and electromagnetic induction, along with a temperature and orientation sensor for controlled heating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a water bath heating method is used to heat milk in a baby bottle, then the heating process avoids microwave hot spots, but the heating time is extended to about 4.5 minutes and energy consumption increases
Solution Approach 1:
The patent introduces a heat transfer surface as an intermediary component that directly contacts the milk through the bottle opening. This mediator enables more efficient heat transfer from the heating element to the milk, avoiding the indirect water bath method while preventing hot spots through controlled thermal contact.
Solution Approach 2:
The patent replaces the water bath heating mechanism with a direct solid-to-liquid heat transfer system. The heating element transfers heat directly through the heat transfer surface to the milk, eliminating the need for heating a large volume of water and reducing thermal inefficiencies.
2Object-affected harmful factors
If a water bath heating method is used to heat milk in a baby bottle, then the heating process avoids microwave hot spots, but energy consumption increases
Solution Approach 1:
The heat transfer surface acts as an intermediary that enables direct and efficient heat transfer to the milk. This reduces energy loss to the surrounding environment and minimizes the energy required to achieve the desired heating, while still avoiding hot spots through controlled thermal contact.
Solution Approach 2:
The patent replaces the energy-intensive water bath system with a direct heat transfer mechanism. By eliminating the need to heat a large volume of water and transfer it indirectly to the milk, the system significantly reduces energy consumption while maintaining safe heating characteristics.
3Strength
If the bottle wall is made of polycarbonate material about 1 mm thick, then the bottle provides structural strength and safety, but heat transfer efficiency is reduced
Solution Approach 1:
The patent segments the heating function from the bottle structure by introducing a separate heat transfer surface that contacts the milk directly through the opening. This allows the bottle wall to maintain its structural polycarbonate construction while the heating function is performed by a dedicated component with optimized thermal properties.
Solution Approach 2:
The heat transfer surface serves as an intermediary between the heating element and the milk, bypassing the need for heat to penetrate the thick polycarbonate bottle wall. This mediator enables efficient heat transfer while the bottle wall continues to provide structural integrity and safety.
4Ease of operation
If the container opening is left open during heating, then access is easy, but spillage occurs and convection is reduced
Solution Approach 1:
The patent implements preliminary sealing of the container opening with the heat transfer surface before heating begins. This pre-sealing action establishes proper convection currents and prevents spillage during the heating process, while still allowing easy access by simply removing the heat transfer surface after heating.
Solution Approach 2:
The heat transfer surface acts as a temporary sealant that closes the opening during heating. This intermediary component prevents spillage and establishes convection currents, while being easily removable to restore full access to the container.
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 solution provides rapid, efficient, and nutrient-preserving heating of milk by direct contact with the heat transfer surface, reducing heating time and energy consumption while preventing overheating and hot spots.
Implementation Method 1
a heating element (22) embedded within the sidewall (20) The first surface (5) of the heating device (1) is arranged, during use, to contact fluid within the cavity (3) of the container (2) so as to transfer heat directly to the fluid
Implementation Method 2
The heating device can comprise a sensor for detecting the orientation of the heating device
Implementation Method 3
The heating device can further comprise a temperature sensor for detecting the temperature of the fluid
Data Source
AI summary
A heating device for heating a fluid in a container, in particular milk in a baby bottle, the heating device including a heat transfer surface for transferring heat to the fluid, wherein the heating device is arranged to be brought into association with the container such that, in use, the heat transfer surface contacts the fluid to transfer heat to the fluid.