Two stage cold press juicer
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Solution Overview
Problem
Existing juicing techniques often compromise on yield, cleanliness, and preservation of juice attributes such as oxygenation and temperature, with two-stage cold press juicers aiming to improve these aspects by incorporating a grinding and pressing subsystem for efficient juice extraction.
Innovation Solution
A two-stage cold press juicer design featuring a grinding subsystem with a feed housing and cutter for pulp formation, and a pressing subsystem with a hydraulic press to extract juice from the pulp, including a mounting system for easy cleaning and maintenance, and a continuous press chamber form to minimize juice loss and sanitation concerns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a two-stage grinding and pressing process is used to improve juice yield, then the juice extraction efficiency increases, but the device complexity increases
Solution Approach 1:
The juicer is divided into two distinct functional stages: a grinding subsystem with a cutter and feed housing that processes comestibles into pulp, and a pressing subsystem with a press chamber and hydraulic press that extracts juice from the pulp. This segmentation allows each subsystem to be optimized for its specific function while working together to achieve high juice yield, directly resolving the contradiction between improved productivity and increased device complexity by making the complexity manageable through functional division
Solution Approach 2:
The hydraulic press mechanism serves multiple functions: it applies pressure to extract juice from the pulp, and through the same mechanical action, it forces the processed material through the press screen to separate juice from pulp. This multi-functionality reduces the need for additional separate components, thereby improving juice yield while limiting the increase in device complexity
2Ease of repair
If a releasable feed housing with mounting system is used to improve ease of cleaning, then the ease of maintenance increases, but the device complexity increases
Solution Approach 1:
The feed housing is designed as a separable component with a mounting system that includes a mounting plate and releasable connection features. This segmentation allows the feed housing to be easily removed from the main body for cleaning and maintenance without requiring disassembly of the entire juicer, thereby improving ease of repair while adding only minimal complexity through the mounting mechanism
Solution Approach 2:
The mounting system incorporates a spring-loaded detent mechanism that provides a secure yet releasable connection. The spring-loaded feature allows for quick engagement and disengagement of the feed housing, making maintenance easy while the dynamic nature of the connection (able to move between locked and unlocked states) adds only minimal complexity compared to permanent fixed connections
3Ease of operation
If a continuous press chamber form is used to reduce cleaning complexity, then the ease of cleaning increases, but manufacturing complexity increases
Solution Approach 1:
The press chamber is constructed as a continuous form created by bending and joining a single sheet of material, merging multiple surfaces (sides, bottom, and top of the chamber) into one continuous structure. This eliminates seams and joints that would otherwise require complex assembly and cleaning, thereby improving ease of cleaning while the sheet metal forming process keeps manufacturing complexity manageable
Solution Approach 2:
The press chamber is formed by bending a two-dimensional sheet of material into a three-dimensional continuous structure. This dimensional transformation allows the creation of a seamless chamber that is easy to clean (no internal joints or seams) while the manufacturing process remains relatively simple, as it involves standard sheet metal forming and joining techniques rather than complex multi-part assembly
4Reliability
If an offset input chute position is used to reduce ejection risk, then the reliability increases, but the device complexity increases
Solution Approach 1:
The input chute is positioned asymmetrically relative to the cutter, specifically offset from the side of the cutter that is spinning upwards. This asymmetric positioning exploits the rotational direction of the cutter to prevent ground comestibles from being ejected upward through the input chute, thereby improving reliability by eliminating a potential failure mode without requiring complex additional components or mechanisms
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 juicer achieves higher juice yield with reduced cleaning complexity and minimal alteration of juice attributes, ensuring a fresh-squeezed state by efficiently extracting juice while maintaining cleanliness and ease of maintenance.
Implementation Method 1
The pressure applied to the pulp can squeeze the juice from the pulp so that the juice can flow into a collection vessel
Data Source
AI summary
Disclosed is a juicer device. In some aspects, the juicer includes a feed housing releasably connected about a rotatable cutter, and an input chute of the feed housing can be offset away from a side of the cutter that rotates upward. In some aspects, the juicer includes a feed housing releasably connectable by a rotation of the feed housing relative to the mount from an aligned position to an installed position so that the feed housing is locked in place in response to the rotating motion. In some aspects, the juicer includes a press chamber in which pulp can be squeezed for juice extraction. The press chamber can include a base and a wall, and a press chamber form can include a continuous piece of material forming at least a portion of the base, at least a portion of the wall, and a transition between the base and the wall.