Multi-pulse jet generator and air conditioner having same
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Solution Overview
Problem
Conventional air conditioners suffer from noise issues due to blower fan rotation and motor noise, and design limitations due to the need for a specific positioning of the heat exchanger and blower fan to achieve efficient air flow and heat exchange.
Innovation Solution
A multi-pulsed jets generating apparatus that uses actuators with diaphragms to produce pulsed jets in multiple orifices, which are then directed through a manifold to generate multi-pulsed jets, eliminating the need for a blower fan and motor, and optimizing the injection angle for improved heat-exchanging efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a blower fan and motor are used to force air flow in a conventional air conditioner, then sufficient air flow velocity can be achieved, but noise is increased due to flow friction and motor driving noise
Solution Approach 1:
The patent uses a diaphragm that vibrates to generate pulsed air flow through pressure changes in cavities, eliminating the need for a rotating blower fan and motor. This vibration-based mechanism produces multi-pulsed jets that achieve sufficient air flow velocity without the continuous mechanical rotation that generates noise in conventional systems.
Solution Approach 2:
The patent employs periodic vibration of the diaphragm to create pulsed air flow in a periodic manner. The diaphragm alternates between expanding and contracting cavities, generating sequences of pulsed jets that provide continuous air flow over time without requiring constant high-speed mechanical operation, thereby reducing noise while maintaining effective air circulation.
2Productivity
If the heat exchanger is disposed to surround a cross fan in a cylindrical shape to achieve efficient heat exchange, then sufficient flow velocity is obtained, but design flexibility and minimization are limited
Solution Approach 1:
The patent divides the air flow generation into multiple independent actuators distributed along a manifold, with each actuator handling a specific region. This segmentation allows the heat exchanger to be positioned more flexibly without requiring a specific cylindrical arrangement around a central fan, while still achieving efficient heat exchange through multiple distributed air flow sources.
Solution Approach 2:
The patent introduces a manifold as an intermediary structure that distributes air flow from multiple actuators to different regions. This manifold acts as a mediator between the actuators and the heat exchanger, allowing optimized air flow distribution without requiring the heat exchanger to be in a fixed cylindrical position around a fan, thereby improving both heat exchange efficiency and design flexibility.
3Speed
If actuators are mounted on both ends of a manifold to generate pulsed jets, then velocity and uniformity of multi-pulsed jets are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple actuators on both ends of the manifold to work together in generating multi-pulsed jets. By merging the output from actuators at both ends through the manifold, the system achieves improved velocity and uniformity of the resulting air flow, as the combined pulsed jets from multiple sources create more consistent and higher velocity flow patterns.
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 reduces noise and enables a compact, thin air conditioner design with improved heat-exchanging efficiency by controlling the direction and velocity of the multi-pulsed jets.
Implementation Method 1
at least one actuator that generates pulsed jets in a plurality of orifices according to a volume change of a plurality of cavities caused by vibration of at least one diaphragm
Implementation Method 2
volume change of a plurality of cavities caused by vibration of at least one diaphragm
Data Source
AI summary
Provided is a multi-pulsed jets generating apparatus including: at least one actuator that generates pulsed jets in a plurality of orifices according to a volume change of a plurality of cavities caused by vibration of at least one diaphragm; and a manifold connected to the at least one actuator so as to generate multi-pulsed jets by receiving the pulsed jets occurring in the plurality of orifices. The velocity and uniformity of the pulsed jets occurring in the plurality of injection ports can be controlled according to vibration phases of a plurality of diaphragms.