The durable ultra-quiet high-pressure oxygen pump suppresses high-pressure airflow pulsation by optimizing the structure of the core compression chamber, minimizing the source of pulsation by balancing the airflow output rhythm. The compression chamber utilizes a multi-cylinder coordinated or single-cylinder, multi-chamber design. This allows the reciprocating motion of the piston or diaphragm to generate staggered airflow. When one compression unit is at peak exhaust, the other is in the intake or pressure stabilization phase. The combined airflows from the two compensate for each other, offsetting some of the pressure fluctuations and avoiding the pulsating pressure peaks that occur when a single chamber is exhausted. Furthermore, the volumetric ratio of the compression chamber, calculated through fluid dynamics, ensures that the pressure changes during compression follow a gentle curve rather than sharp rises and falls. This reduces the amplitude of airflow pulsation at the source, laying the foundation for subsequent stable flow in the air path. This structural design also ensures the high-pressure resistance of the components, meeting the core requirement of durability.
The built-in buffer and pressure stabilization device in the air path system is a key component in absorbing high-pressure airflow pulsation. The durable ultra-quiet high-pressure oxygen pump features an independent buffer chamber or pressure-stabilizing chamber between the compression chamber and the main airway. Its internal space features a gradient volume structure, and the inner walls are equipped with guide plates and a porous damping layer. When high-pressure air enters the buffer chamber, the guide plates guide the airflow along the chamber walls, slowly diffusing it and preventing direct impact with the walls and turbulence. The porous damping layer further decomposes the airflow's kinetic energy, absorbing pressure peaks and allowing the airflow to form a stable pressure field within the chamber before entering the main airway. This buffer design not only significantly reduces airflow pulsation but also reduces impact wear on airway components, extending airway service life. It also avoids resonance noise caused by pulsating airflow impacting the airway, contributing to its "ultra-quiet" characteristics.
Fluid dynamics optimization of the airflow channel reduces secondary pulsation and airway losses caused by improper channel structure. The durable ultra-quiet high-pressure oxygen pump's gas path features a smooth transition in diameter to avoid sudden expansion or contraction. Sudden cross-sectional changes can easily cause localized vortexes in the airflow, exacerbating airflow pulsation and generating additional noise. They also increase airflow resistance and loss. Curves in the channel feature a large radius of curvature to minimize impact when the airflow changes direction. The channel's interior is precision-polished to reduce friction between the airflow and the wall, ensuring smooth airflow. This reduces pressure loss caused by friction and avoids airflow disturbances caused by rough interior walls, further suppressing pulsation and ensuring long-term, stable operation and durability.
The precise control and flexible sealing design of the valve assembly prevents pulsation and leakage during airflow opening and closing. The durable ultra-quiet high-pressure oxygen pump's inlet and exhaust valves utilize a high-frequency response valve core structure. The valve core's opening and closing timing is precisely matched to the compression unit's movement through mechanical linkage or electronic control, ensuring no noticeable interruption or backflow during airflow switching and minimizing pressure fluctuations. The valve core's sealing surface is constructed of flexible, wear-resistant material, ensuring a tight seal under high pressure, preventing pressure loss caused by air leakage. It also cushions the impact of valve core opening and closing, avoiding noise and component wear caused by rigid impact. Furthermore, the valve's spring force is calibrated to ensure smooth valve core opening and closing under high pressure, without sticking or delay, further stabilizing airflow output and suppressing pulsation.
The use of damping materials in air path components absorbs pulsation energy through its physical properties, reducing noise and loss. Key air path components of the durable ultra-quiet high-pressure oxygen pump, such as the buffer chamber housing and valve seat, are constructed of high-strength materials with a specific damping coefficient. This material effectively absorbs vibration energy transmitted by air pulsation, preventing resonant noise caused by component vibration. It also minimizes the impact of vibration on adjacent components, enhancing overall quietness. Some components are also coated with a damping coating to further attenuate the vibration waves generated by airflow impact, gradually weakening airflow pulsation during transmission. These materials exhibit excellent high-pressure and aging resistance, capable of withstanding the impact of long-term high-pressure airflow and environmental impacts, ensuring the pump's durability and preventing a decrease in pulsation suppression due to material aging.
The intelligent pressure feedback control system responds to load changes in real time to maintain stable airflow output. The durable ultra-quiet high-pressure oxygen pump features a built-in pressure sensor that monitors pressure changes in the air circuit in real time. When it detects airflow pulsation exceeding a set range (e.g., a sudden pressure increase due to load increase, or a sudden pressure drop due to load decrease), the control system automatically adjusts the motor speed or the operating frequency of the compression unit. If the pressure is too high, the compression frequency is appropriately reduced to reduce peak airflow pressure; if the pressure is too low, the frequency is appropriately increased to replenish pressure, ensuring that the air circuit pressure remains within a stable range. This dynamic adjustment not only suppresses airflow pulsation caused by load changes, but also prevents wear and tear of air circuit components caused by long-term overpressure operation, extending the pump's service life. It also reduces the noise generated by severe pressure fluctuations, ensuring silent operation.
The composite silencer and flow stabilization structure at the end of the air path can ultimately optimize the airflow and avoid terminal pulsation and noise. The durable ultra-quiet high-pressure oxygen pump's outlet will be integrated with a composite silencer. The silencer combines resistive silencer cotton and a resistant silencer cavity. The resistive silencer cotton absorbs the medium and high-frequency noise generated by airflow pulsation, while the resistant silencer cavity reflects and offsets low-frequency pulsating pressure waves through changes in cavity volume. This dual effect further reduces airflow noise. At the same time, a flow stabilization grille is installed at the outlet of the silencer. The porous structure of the grille allows the airflow to be dispersed and stabilized before discharge, ensuring that the final output airflow is smooth and uniform, avoiding end-user noise caused by end-user pulsation. At the same time, it reduces the pressure loss of the airflow at the end, ensuring that high-pressure oxygen can be efficiently delivered to the target scene, taking into account the needs of quietness, durability, and efficiency.
