Vacuum-sealing device and method for operating vacuum-sealing device
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Solution Overview
Problem
Conventional vacuum-sealing devices require large chamber containers to manufacture vacuum heat insulators for large-scale apparatuses, leading to increased manufacturing costs and inefficiencies in sealing processes.
Innovation Solution
A vacuum-sealing device with a body unit comprising an external cylinder part and a movable body part, equipped with a heater and a vacuum pump, which seals exhaust holes without the need for adhesives, allowing for efficient and secure sealing of vacuum heat insulators without enlarging the chamber container size, thereby reducing manufacturing costs and ensuring sufficient gas barrier and heat insulation properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the chamber container is enlarged to manufacture vacuum heat insulators for large-scale apparatuses, then the sealing capacity is improved, but the pressure reduction time and manufacturing costs increase
Solution Approach 1:
The invention divides the sealing process into two stages: first sealing the exhaust hole to create a closed chamber, then performing vacuum sealing. This segmentation allows the use of a smaller chamber container while still achieving the required vacuum sealing capacity for large-scale apparatuses, thereby reducing pressure reduction time without compromising sealing capacity
Solution Approach 2:
The exhaust hole is sealed before the vacuum sealing process begins. This preliminary action creates a closed chamber that can be efficiently evacuated, allowing the pressure reduction to proceed faster without requiring an excessively large chamber container
2Reliability
If adhesives are used to fix the sealing member, then the sealing reliability is improved, but the gas barrier properties and heat insulation performance deteriorate due to adhesive remaining on the container surface
Solution Approach 1:
The invention replaces the chemical bonding method (adhesive) with a mechanical fixing method using a fixing member that holds the sealing member through mechanical engagement. This substitution eliminates adhesive contamination while maintaining sealing reliability, preserving the gas barrier and heat insulation properties of the vacuum heat insulator
Solution Approach 2:
A fixing member is introduced as an intermediary component between the sealing member and the container. This intermediary provides mechanical fixation without requiring adhesives, preventing contamination while ensuring the sealing member remains securely positioned during the vacuum sealing process
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 enables the efficient and secure sealing of vacuum heat insulators, reducing manufacturing costs while maintaining adequate gas barrier and heat insulation properties, without the need for large chamber containers, thus improving the vacuum sealing process.
Implementation Method 1
a heater that heats at least a part of the body part
Implementation Method 2
a sealing device which seals an opening portion of an exterior covering by thermal welding within the chamber container
Implementation Method 3
a chamber container capable of reducing a pressure inside the chamber container
Implementation Method 4
a pressure inside the chamber container is reduced
Data Source
AI summary
A vacuum-sealing device includes external cylinder part (501B) which includes a distal end face that is brought into airtight contact with an outer face of a container that is a vacuum-sealing target to cover an exhaust hole of the container, and includes body part (501A) provided within external cylinder part (501B) and movable forward and backward along an axial center of external cylinder part (501B). The vacuum-sealing device further includes driver (503) that moves external cylinder part (501B) and body part (501A) forward and backward in the direction of extension of the axial center of external cylinder part (501B), and heater (504) that heats distal end portion (51) of body part (501A). Exhaust space (58) communicating with the distal end face of external cylinder part (501B) is formed between an outer circumferential face of distal end portion (51) of body part (501A) and an inner circumferential face of external cylinder part (501B).