refrigerator
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Solution Overview
Problem
Current refrigerators lack an efficient mechanism for maintaining a consistent vacuum environment for food preservation, leading to issues with microorganism growth and chemical reactions, which affects the longevity and quality of stored food.
Innovation Solution
A refrigerator equipped with a vacuum sealing device that includes a lower and upper support with sealing rings, a driving device for precise movement, and a vacuumization assembly with a pressure detection and relief system to create and control a vacuum environment for storage compartments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vacuum sealing device is introduced to prevent microorganism growth and chemical oxidation, then food preservation quality is improved, but device complexity increases
Solution Approach 1:
The vacuum sealing device is integrated within the refrigerator door structure, with the upper support containing the motor and transmission mechanism, and the lower support containing the vacuumization assembly. This nested arrangement allows multiple functional components to be compactly organized within the existing refrigerator structure, reducing overall device complexity while maintaining food preservation quality.
Solution Approach 2:
The vacuum sealing device serves multiple functions: creating vacuum environment for preservation, sealing containers to maintain vacuum, and integrating with the refrigerator door structure. This multi-functionality reduces the need for separate preservation devices, thereby improving food preservation quality without proportionally increasing device complexity.
2Productivity
If the upper support moves at high speed to contact sealing rings, then sealing efficiency is improved, but impact force increases causing deformation
Solution Approach 1:
The upper support first moves at high speed to a position near the lower support, then slows down before actual contact with the sealing rings. This preliminary positioning at high speed followed by controlled deceleration ensures sealing efficiency while preventing excessive impact force that could cause deformation of the sealing rings or supports.
Solution Approach 2:
The driving device controls the upper support to move at variable speeds during the sealing process - high speed for approach and positioning, then reduced speed for contact and sealing. This dynamic speed adjustment optimizes sealing efficiency while controlling impact force to prevent deformation.
3Manufacturing precision
If the transmission mechanism converts rotational movement to rectilinear movement, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The transmission mechanism converts rotational movement of the motor into rectilinear movement of the upper support using mechanical elements. This substitution allows precise positioning control through rotational-to-linear conversion, achieving positioning precision while keeping the mechanism relatively simple through standard mechanical transmission components.
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 vacuum sealing device effectively prevents microorganism growth and chemical oxidation, enhancing food preservation by maintaining a consistent vacuum, thereby extending the shelf life and quality of stored food.
Implementation Method 1
the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vacuumization region
Implementation Method 2
the first opening cavity and the second opening cavity are butt-jointed to sealingly form a vacuumization region
Data Source
AI summary
The present disclosure provides a refrigerator including a vacuum sealing device disposed at an outer side of a door. The vacuum sealing device includes a lower support, an upper support and a vacuumization assembly. The upper support moves close to or away from the lower support under the drive of a driving device; after the upper support moves at a first speed until a sealing ring of the upper support is in contact with a sealing ring of the lower support, the upper support moves at a second speed toward the lower support until the sealing ring has a set deformation amount, and a first opening cavity and a second opening cavity are butt-joined to sealingly form a vacuumization region; the first speed is greater than the second speed; the vacuumization assembly is in communication with the vacuumization region through a pipe to perform vacuumization or depressurization for the vacuumization region.