Ejector and refrigeration system having the same
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Traditional refrigeration systems using ejectors face inefficiencies due to suboptimal nozzle positions, affecting power consumption and overall system performance under varying operating conditions.
Innovation Solution
An ejector with an adjustable nozzle mechanism, utilizing a magnetic rotating mechanism and guiding mechanism to adjust the nozzle's position along the axis, ensuring optimal alignment with the mixing chamber under different pressure conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the nozzle position is fixed, then the structure is simple, but the ejector efficiency decreases under varying operating conditions
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed nozzle structure into a movable one. The nozzle is equipped with a driving mechanism that enables it to move along the axial direction, allowing the nozzle position to be dynamically adjusted according to different operating conditions. This dynamic adjustment capability ensures that the nozzle outlet remains optimally positioned relative to the mixing chamber inlet, thereby maintaining high ejector efficiency across varying pressure and flow conditions.
2Reliability
If the nozzle position is adjusted, then the ejector efficiency improves, but the device complexity increases
Solution Approach 1:
The patent employs magnetic driving technology to replace complex mechanical transmission mechanisms. A magnetic driving assembly generates magnetic fields that directly act on the nozzle or a connected magnetic component, enabling precise positional adjustment without requiring traditional mechanical linkages, gears, or motors. This substitution of magnetic fields for mechanical systems significantly reduces the overall device complexity while achieving reliable nozzle position control.
Solution Approach 2:
The patent introduces a magnetic field as an intermediary between the control system and the nozzle. Instead of direct mechanical contact or complex transmission mechanisms, the magnetic field serves as a non-contact mediator to transmit driving force to the nozzle, enabling smooth and precise position adjustment. This intermediary approach simplifies the mechanical structure by eliminating the need for direct mechanical connections and reducing the number of moving parts.
3Manufacturing precision
If the nozzle is constrained to move only axially, then the alignment with mixing chamber is optimized, but the structural constraints increase
Solution Approach 1:
The patent extracts and isolates the guiding function into a separate guiding mechanism that is specifically designed to constrain motion to the axial direction. This dedicated guiding structure, which may include guide rails, bushings, or magnetic guidance fields, independently handles the constraint requirement, allowing the driving mechanism to focus solely on generating axial motion. By separating the guiding function from the driving mechanism, the overall structure becomes more modular and easier to manufacture with precise tolerances.
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
Maintains stable operation and improves efficiency by adjusting the nozzle position in response to changing conditions, reducing power consumption and enhancing the refrigeration system's operational efficiency.
Implementation Method 1
the outer surface of the inner ring and the inner surface of the outer ring are respectively provided with magnets with opposite magnetic properties and the same quantity, and when the outer ring of the magnetic rotating mechanism rotates, the magnetic field between the inner ring and the outer ring changes, and the inner ring rotates under the action of magnetic force
Data Source
AI summary
An ejector comprises: a housing having a first chamber and a second chamber, the first chamber having a first inlet for introducing high-pressure fluid and a second inlet for introducing low-pressure fluid, and the second chamber is sequentially provided with a reducing section, a mixing section, and an expanding section along the direction of fluid movement; a nozzle installed in the first chamber of the housing and is only capable of moving along the axis direction of the first chamber of the housing; a magnetic rotating mechanism, comprising an outer ring and an inner ring, the inner ring is rotatably connected to the second end of the nozzle.