Compressor liquid accumulator and compressor comprising same

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Solution Overview

Problem

The existing compressor liquid accumulators have complex fixing processes and high manufacturing costs, which hinder efficient welding and stability.

Innovation Solution

A compressor liquid accumulator design featuring a first suction cup with a first welding surface and a second suction cup with a second welding surface, connected via a resistance welding process, where the first suction cup has an extending portion within the second suction cup's cavity, reducing the impact of welding on other parts and improving connection stability and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional welding methods are used for the liquid accumulator shell, then the welding process becomes complicated and manufacturing cost increases, but the welding quality and efficiency are improved

Engineering Contradiction:
Improvewelding qualityVSAvoidwelding process complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The liquid accumulator shell is divided into multiple shell branch portions, each with dedicated welding surfaces. This segmentation allows for simplified individual welding operations while maintaining overall structural integrity, resolving the contradiction between welding quality and process complexity

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shell branch portions are pre-formed with welding surfaces prepared in advance before the final assembly welding. This preliminary preparation simplifies the actual welding process while ensuring high welding quality, as the welding surfaces are already optimized for the joining operation

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If the first suction cup is welded directly to the second suction cup without an extending portion, then the welding process is simpler, but the stability of the mating connection is reduced

Engineering Contradiction:
Improvemating connection stabilityVSAvoidstructure complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The first extending portion extends into the cavity of the second suction cup, creating a nested configuration where one component is partially inserted into another. This nesting provides mechanical interlocking that enhances mating connection stability while adding minimal structural complexity

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The first extending portion adds a dimensional element by protruding into the cavity space of the second suction cup. This three-dimensional arrangement creates additional contact surfaces and mechanical engagement, improving connection stability without significantly complicating the overall structure

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

3Productivity

If the welding surface is made larger to improve welding quality, then the welding efficiency increases, but the influence of welding process on other parts of the compressor liquid accumulator increases

Engineering Contradiction:
Improvewelding efficiencyVSAvoidwelding process influence on other parts
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The welding operation is extracted and concentrated to specific welding surfaces on the shell branch portions, separating the welding process from the rest of the accumulator structure. This allows for efficient welding on localized surfaces while minimizing thermal influence and process impact on other parts of the compressor liquid accumulator

Inventive Principle:
Principle #2Taking out (Extraction)

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 simplifies the welding process, enhances the stability of the mating connection, and reduces production costs while maintaining high welding quality and efficiency.

Implementation Method 1

a surface, facing the second suction cup, of the first suction cup is provided with a first welding surface, a surface, facing the first suction cup, of the second suction cup is provided with a second welding surface, and the first welding surface and the second welding surface are connected in a welded manner

Methodology Applied
Scientific EffectResistance welding: Welding

Data Source

PatentEP3892859B1Compressor liquid accumulator and compressor comprising same
Publication Date: 2025.03.26 GUANGDONG MEIZHI PRECISION MFG
  • EP3892859B1 patent drawingFigure 1
  • EP3892859B1 patent drawingFigure 2~3
  • EP3892859B1 patent drawingFigure 4~5

AI summary

Disclosed are a compressor liquid accumulator (100) and a compressor comprising same, the compressor liquid accumulator (100) comprising a first suction cup (110) and a second suction cup (120). The surface, facing the second suction cup (120), of the first suction cup (110) is provided with a first welding face (1121), the surface, facing the first suction cup (110), of the second suction cup (120) is provided with a second welding face (121), the first welding face (1121) and the second welding face (121) are connected in a welded manner, and the first suction cup (110) and the second suction cup (120) define a cavity (122). The first suction cup (110) is provided with a first extending portion (1122), the first extending portion (1122) is adjacent to the first welding face (1121), and the first extending portion (1122) is located in the cavity (122) defined by the second suction cup (120). The liquid accumulator can simplify the welding process and improve the welding efficiency, thereby improving the stability of the compressor liquid accumulator.