Liquid receiver, and vehicle-use air conditioning device condenser including the liquid receiver
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Solution Overview
Problem
Existing liquid receivers for refrigerating cycle condensers face challenges in ensuring airtightness and productivity due to potential damage or distortion of sealing O-rings and the risk of refrigerant leakage, especially under vibrating conditions and during stopper attachment processes.
Innovation Solution
A liquid receiver design featuring a stopper with a filtering unit, a fixed portion, and a movable connection portion that prevents the filtering unit from rotating with the fixed portion, allowing axial movement and integration of a sealing member to maintain airtightness without rotating the sealing member, thereby reducing the risk of damage and distortion, and improving attachment productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stopper is screwed into the liquid receiver main body with rotation during mounting, then the stopper can be securely fixed, but the sealing O-ring may be damaged or distorted causing refrigerant leakage
Solution Approach 1:
The stopper is divided into two functional parts: a filtering unit that remains stationary and a fixed portion that rotates for mounting. This segmentation allows the sealing member on the filtering unit to avoid rotational damage while the fixed portion can be securely screwed into place.
Solution Approach 2:
A movable connection portion acts as an intermediary between the filtering unit and the fixed portion. This connection allows relative rotation between the two parts, enabling the fixed portion to rotate for mounting while the filtering unit with the sealing member remains stationary.
2Reliability
If the stopper is inserted without rotation using a fixing screw, then the sealing O-ring is protected from damage, but the fixing process becomes more complex and time-consuming
Solution Approach 1:
The stopper is divided into a filtering unit and a fixed portion that can rotate independently. This allows the filtering unit with the sealing member to remain stationary while the fixed portion rotates for quick mounting, combining the benefits of both approaches.
Solution Approach 2:
The movable connection portion enables dynamic relative motion between the filtering unit and the fixed portion. During mounting, the fixed portion can rotate dynamically while the filtering unit stays stationary, allowing for efficient installation without compromising sealing integrity.
3Manufacturing precision
If the filtering unit is fixed to prevent rotation, then the sealing member is protected from distortion, but the filtering unit cannot follow axial movement of the fixed portion
Solution Approach 1:
The movable connection portion provides dynamic coupling between the filtering unit and the fixed portion. It constrains rotational movement to protect the sealing member while allowing axial movement, adapting to the different motion requirements of the two components.
Solution Approach 2:
The stopper is segmented into a filtering unit and a fixed portion connected by a movable connection. This segmentation with selective motion constraints allows the filtering unit to maintain precise alignment for sealing while the fixed portion can move axially for mounting and adjustment.
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 ensures high airtightness and secure refrigerant containment while simplifying the stopper attachment process, reducing the risk of refrigerant leakage and improving manufacturing efficiency, making it suitable for vehicle-use air conditioning devices.
Implementation Method 1
a sealing member (43) that is compressed between the filtering unit (41) and the liquid receiver main body (2), thereby preventing a leakage of a refrigerant
Implementation Method 2
a movable connection portion (44) that connects the filtering unit (41) and the fixed portion (42) to each other in such a way as not to cause the filtering unit (41) to follow a rotation of the fixed portion (42), and in such a way as to cause the filtering unit (41) to follow an axial direction movement of the fixed portion (42)
Data Source
AI summary
Described is a stopper including a filtering unit housed in an interior of a liquid receiver main body through which a refrigerant passes, a fixed portion that includes a screw portion that is screwed into an inner peripheral face of the liquid receiver main body, a sealing member in contact with the inner peripheral face of the liquid receiver main body, thereby preventing a leakage of a refrigerant to the fixed portion, and a movable connection portion provided between the filtering unit and the fixed portion for linking the filtering unit to the fixed portion in such a way that the filtering unit is not caused to follow a rotation of the fixed portion, and in such a way that the filtering unit is caused to follow an axial direction movement of the fixed portion.