Liquid storage container and manufacturing method thereof

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Solution Overview

Problem

The existing liquid reservoirs in vehicle air-conditioning systems face challenges in achieving high filtering capacity to ensure refrigerant cleanliness, as they are not equipped with a stable filter assembly structure that effectively improves filtering efficiency.

Innovation Solution

A liquid reservoir design featuring a hermetically fixed cover and housing with a filter assembly that includes position-limiting assemblies, a filter member, and a molecular sieve, where the filter member is positioned between the assemblies to prevent movement and enhance filtering, and a method for manufacturing this structure that involves forming and assembling various components to ensure stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a filter assembly is added to improve filtering capacity, then refrigerant cleanliness is improved, but device complexity increases

Engineering Contradiction:
Improverefrigerant cleanlinessVSAvoidfilter assembly structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the filter member and molecular sieve into a single integrated filter assembly structure. The filter member is positioned against the bottom wall of the housing, and the molecular sieve is placed on top of the filter member, creating a unified filtering system that improves refrigerant cleanliness while avoiding the complexity of separate, distributed filtering components throughout the reservoir.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The filter assembly is segmented into distinct functional layers: a filter member for particulate filtration and a molecular sieve for moisture absorption. This segmentation allows each component to perform its specific function efficiently, with the filter member catching solid impurities and the molecular sieve absorbing moisture, thereby achieving high refrigerant cleanliness through specialized, modular filtering stages.

Inventive Principle:
Principle #1Segmentation

2Reliability

If position-limiting assemblies are added to stabilize the filter assembly, then filtering effect is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvefiltering effectVSAvoidassembly structure
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The position-limiting assemblies are designed as pre-formed structures integrated into the housing walls. The first position-limiting assembly is formed as part of the housing bottom wall, and the second position-limiting assembly is formed as part of the housing side wall before the filter assembly is installed. This preliminary formation of positioning structures simplifies the final assembly process, as the filter member and molecular sieve can be directly placed into their correct positions without requiring complex adjustment or additional fastening operations.

Inventive Principle:
Principle #10Preliminary action

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 internal structure of the filter assembly is stabilized, significantly improving the filtering effect of the liquid reservoir, ensuring higher refrigerant cleanliness by effectively filtering and absorbing moisture.

Implementation Method 1

a molecular sieve... absorbing moisture

Methodology Applied
Scientific EffectAdsorption: Adsorption

Implementation Method 2

a filter member... filtering impurities

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS12135153B2Liquid storage container and manufacturing method thereof
Publication Date: 2024.11.05 ZHEJIANG SANHUA AUTOMOTIVE COMPONENTS CO LTD
  • US12135153B2 patent drawing
  • US12135153B2 patent drawing
  • US12135153B2 patent drawing

AI summary

A liquid reservoir includes a housing and a cover hermetically fixed to the housing, and further includes a flow guiding pipe having one end connected with the housing, and a filter assembly arranged in the housing and including first and second position-limiting assemblies, a filter member, and a molecular sieve. The first position-limiting assembly includes at least a first position-limiting member having a bottom portion, first and second protrusions. A part of an outer side wall of the flow guiding pipe is limited by and in cooperation with an inner side wall of the first protrusion which is located on an outer peripheral side of the part of the outer side wall of the flow guiding pipe. An outer side wall of the second protrusion is located on an inner peripheral side of a part of an inner sidewall of the housing.