Fluid Supply Control Device for Gas Combustion Nailer
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Solution Overview
Problem
Existing fluid supply control devices for gas combustion nailers face instability in striking force due to inaccuracies in fluid delivery, caused by variations in solenoid valve driving speed and fluid flow velocity, which are influenced by pressure and viscosity changes, leading to inconsistent fuel gas supply.
Innovation Solution
A fluid supply control device with a gauging chamber equipped with a first and second valve element, actuated with a time difference by an electromagnetic biasing structure and an elastic biasing structure, ensuring precise control over fluid flow by differentiating the magnetic force intensity between the valve elements to maintain a consistent fluid supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a solenoid valve is used to control fluid supply to the gauging chamber, then the fluid supply can be automated and controlled, but the striking force becomes unstable due to variations in solenoid valve driving speed and fluid flow velocity
Solution Approach 1:
The invention divides the single valve control into two separate valve elements: a first valve element (inlet valve) that controls fluid entry into the gauging chamber, and a second valve element (outlet valve) that controls fluid discharge. These valve elements are actuated with a time difference by the electromagnetic biasing structure, allowing independent control of charging and discharging phases. This segmentation eliminates the interference between inlet and outlet flows that causes measurement errors and striking force instability.
2Productivity
If the solenoid valve opens the outlet of the gauging chamber, then the fluid can be discharged, but excess fluid flows into the gauging chamber from the inlet simultaneously, causing supply inaccuracy
Solution Approach 1:
The electromagnetic biasing structure is designed to actuate the first valve element (inlet valve) to close position before actuating the second valve element (outlet valve) to open position. This preliminary action ensures that the inlet is sealed prior to outlet opening, preventing excess fluid from entering during discharge. Similarly, during charging, the outlet valve closes before the inlet valve opens, preventing fluid leakage during filling. This sequential timing prevents the simultaneous opening that causes supply inaccuracy.
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 solution ensures accurate and consistent delivery of a predetermined amount of fluid, stabilizing the striking force of the gas combustion nailer by preventing excess fluid flow and maintaining a precise charging mechanism, thus enhancing operational reliability.
Implementation Method 1
an electromagnetic biasing structure configured to electromagnetically bias the first valve element and the second valve element
Implementation Method 2
an elastic biasing structure configured to elastically bias at least one of the first valve element and the second valve element
Data Source
Figure 1A~1C
Figure 2A~2C
Figure 3A~3C
AI summary
A fluid supply control device and a gas combustion type nailer including the fluid supply control device are provided. The fluid supply control device includes a gauging chamber configured to be charged with a fluid, an inlet port through which the fluid flows into the gauging chamber, an outlet port through which the fluid flows out from the gauging chamber, a first valve element arranged inside the gauging chamber to close the inlet port, a second valve element arranged inside the gauging chamber to close the outlet port, an electromagnetic biasing structure configured to electromagnetically bias the first valve element and the second valve element, and an elastic biasing structure configured to elastically bias at least one of the first valve element and the second valve element. The first valve element and the second valve element are are independently movable and are actuated with a time difference.