Double-Walled Stainless Steel Kettle for Heat Retention and Assembly
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Solution Overview
Problem
Existing electric kettles face issues with heat insulation performance, power consumption, assembly workability, wire configuration, and appearance unity, with previous designs either compromising on hygiene and durability or suffering from heat transfer and operational complexity.
Innovation Solution
The electric kettle features a double-walled stainless steel body with a heat insulation space between the inner and outer bodies, a handle with a built-in PCB for controlling the heating module, and a unified cylindrical design with the base, allowing for improved heat retention, reduced power consumption, enhanced assembly and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a double-layer vacuum structure is used to improve heat insulation performance, then heat insulation performance is improved, but there is a limitation in the configuration for handle operation and electric wire arrangement
Solution Approach 1:
The patent introduces a heat insulation layer as an intermediary substance filling the annular space between the inner and outer containers. This layer serves as a mediator that provides thermal insulation while allowing the electric wire to pass through it, thus resolving the contradiction between heat insulation performance and wire configuration flexibility.
2Loss of energy
If a double-layer vacuum structure is used to improve heat insulation performance, then heat insulation performance is improved, but assembly workability is deteriorated
Solution Approach 1:
The patent divides the body into three separate components: an inner container, an outer container, and a heat insulation layer. This segmentation allows each component to be manufactured and prepared independently, then assembled together by simply placing the heat insulation layer in the annular space and routing the wire through it, significantly improving assembly workability while maintaining heat insulation performance.
3Loss of energy
If a double-layer vacuum structure is used to improve heat insulation performance, then heat insulation performance is improved, but the sense of unity of overall appearance is deteriorated
Solution Approach 1:
The patent employs a nested structure where the heat insulation layer is placed within the annular space between the inner and outer containers, and the electric wire is routed through the heat insulation layer. This nested arrangement maintains a compact, unified appearance from the outside while accommodating the insulation and wiring internally, thus preserving the sense of appearance unity.
4Reliability
If stainless steel body is used to ensure hygiene and durability, then hygiene and durability are improved, but the main body temperature rises causing burns
Solution Approach 1:
The patent segments the body into an inner container that contacts the liquid and an outer container that forms the external surface. This separation allows the inner container to be made of hygienic stainless steel while the outer container can be made of a material with lower thermal conductivity, thus preventing heat transfer to the outer surface and reducing burn risk while maintaining hygiene.
Solution Approach 2:
The heat insulation layer acts as a thermal intermediary between the inner and outer containers. It blocks heat transfer from the hot liquid in the inner container to the outer container, keeping the outer surface temperature low and preventing burns, while allowing the inner container to maintain its hygienic stainless steel construction.
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
This design improves heat insulation, reduces power consumption, simplifies assembly and appearance, while maintaining user safety and ease of use, and enhances the overall aesthetic unity of the device.
Implementation Method 1
a space between the inner body and the outer body
Data Source
Figure 1
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AI summary
An electric kettle includes a body (10) made of a stainless material and having a cylindrical shape with an opened upper surface and an opened lower surface, a heating module (50) configured to form a bottom of a space (101) in which water is contained inside the body and heat the water, a handle (40) protruding from an upper portion of an outer surface of the body, and a base (60) configured to support the body (10) at a lower side and supply power to the heating module in a state in which the body is seated. The body includes an outer body (11) configured to form the outer surface of the body, an inner body (12) connected to the outer body in an inside of the outer body and configured to form the space (101) in which water is contained, a heat insulation space (102) spaced apart between the outer body and the inner body, and a body hole (114) opened in the lower surface of the body and configured to communicate with the heat insulation space.