Inkjet Head Cooling Flow Resistance for Ink Flow Distribution
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Solution Overview
Problem
Existing liquid jet heads face challenges in controlling the flow rate distribution of different flow paths due to constant flow path resistance, which is difficult to manage with varying ink types in terms of viscosity and thermal conductivity.
Innovation Solution
The introduction of a throttle member that controls the flow path resistance of the jet and cooling flow paths, allowing for interchangeable throttle members with varying resistance values, and includes a flared part with elastically deformable sections for easy attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flow path resistance is kept constant in the flow paths, then the structure is simple, but it is difficult to control the flow rate distribution of the flow paths when using different ink types with varying viscosity and thermal conductivity
Solution Approach 1:
The patent applies parameter changes by introducing a throttle member that can vary the flow path resistance parameter. This allows the system to adapt to different ink types (with varying viscosity and thermal conductivity) by adjusting the resistance parameter, thereby controlling the flow rate distribution between the jet flow path and cooling flow path according to the specific ink being used.
Solution Approach 2:
The patent implements dynamics by making the flow path resistance adjustable rather than fixed. The throttle member can be replaced or adjusted to change the resistance value, transforming the static flow path structure into a dynamic system that can adapt its characteristics based on operational requirements and ink type.
2Manufacturing precision
If interchangeable throttle members are introduced to control flow path resistance, then the flow rate distribution can be precisely controlled, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by separating the throttle member as an independent, replaceable component from the main flow path structure. This allows the throttle member to be optimized for precise flow control while keeping the rest of the system relatively simple. The segmented design enables easy replacement and adjustment without affecting the entire system.
3Adaptability or versatility
If the throttle member is made replaceable, then the adaptability to different ink types is improved, but the ease of operation decreases due to additional assembly and disassembly steps
Solution Approach 1:
The patent makes the throttle member detachable and replaceable, transforming it from a fixed component to a dynamic one that can be easily exchanged. This dynamic design allows users to change the flow path resistance characteristics by simply replacing the throttle member, providing adaptability to different ink types while maintaining relatively simple operation through standardized attachment and detachment 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
This configuration enables precise control over the flow rate distribution by adjusting the flow path resistance, minimizing bubble retention, enhancing sealability, and preventing heat-induced deformation of the throttle member.
Implementation Method 1
a flared part flared from the cylindrical part to an outside of an end portion of the cooling pipe, wherein the flared part includes an elastically deforming part which extends from the flared part along an outer circumferential surface of the cooling pipe and which is elastically deformable
Implementation Method 2
a throttle member configured to control a flow path resistance of at least one of the jet flow path and the cooling flow path
Implementation Method 3
a cooling pipe having a cooling flow path through which the liquid passes as a cooling medium configured to cool a heat source
Data Source
AI summary
A flow rate distribution of flow paths is controlled. An inkjet head jets ink. The inkjet head is provided with a head main body having a jet flow path through which the ink passes, a cooling pipe having a cooling flow path through which the ink passes as a cooling medium for cooling a drive circuit, and a throttle member for controlling a flow path resistance of the cooling flow path.