Intelligent Air Pump With Mechanical Sensor For Pressure Control

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Solution Overview

Problem

Existing built-in air pumps for inflatable bodies lack accurate pressure control and are noisy, leading to inconsistent internal air pressure and a poor user experience.

Innovation Solution

An intelligent built-in air pump with a mechanical air pressure sensor, airway switching device, and air-supplementing pump, which includes a motor assembly and sound-absorbing components to maintain constant internal pressure and reduce noise.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a conventional motor-driven impeller structure is used for air-supplementing function, then the pump can provide inflation and deflation, but the internal air pressure cannot be accurately measured and controlled

Engineering Contradiction:

Improveinternal air pressure measurement accuracyVSAvoidair pressure control consistency

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The patent replaces conventional electronic pressure sensors with a mechanical air pressure sensor that uses a diaphragm and linkage mechanism to detect and control air pressure. This mechanical system provides reliable pressure measurement and control without the complexity and potential failure points of electronic sensing systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements a feedback control system where the mechanical air pressure sensor continuously monitors internal air pressure and automatically adjusts the air-supplementing pump operation. When pressure drops below a threshold, the system activates the pump to supplement air, maintaining consistent pressure levels through automatic feedback control.

Inventive Principle:

Principle #23Feedback

2Reliability

If an air-supplementing pump is added to maintain constant pressure, then pressure consistency improves, but noise during operation increases significantly

Engineering Contradiction:

Improveair pressure consistencyVSAvoidnoise during operation

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent uses a diaphragm-based mechanical pressure sensor that operates on pneumatic principles. The diaphragm responds to pressure changes and transmits mechanical motion through a linkage to control the air-supplementing pump, providing a pneumatic-hydraulic solution that maintains pressure consistency while minimizing noise compared to electronic actuation systems.

Inventive Principle:

Principle #29Pneumatics and hydraulics

3Device complexity

If manual pressure monitoring is used, then device complexity remains low, but pressure control accuracy and consistency deteriorate

Engineering Contradiction:

Improvesensor and control system complexityVSAvoidair pressure measurement accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent employs a purely mechanical pressure sensing and control system without electronic components. The mechanical diaphragm sensor and linkage mechanism provide accurate pressure measurement and automatic control, achieving high measurement precision while keeping device complexity low by eliminating electronic circuits, processors, and power management systems.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 provides accurate air pressure control, maintains consistent internal pressure, and reduces noise during operation, enhancing user experience and air-supplementing efficiency.

Implementation Method 1

a mechanical air pressure sensor disposed in the accommodating chamber and configured to be in fluid communication with the inflatable body via a port in the air pump housing

Methodology Applied

Scientific EffectPressure detection:

Implementation Method 2

an air-supplementing pump disposed in the accommodating chamber and in fluid communication with the interior of the inflatable body to supplement air to the inflatable body

Methodology Applied

Scientific EffectAir compression: Compression

Implementation Method 3

a main air pump disposed in an accommodating chamber defined within the air pump housing, the main air pump configured to inflate and deflate an inflatable body via the first vent

Methodology Applied

Scientific EffectAir movement:

Data Source

PatentEP4083437B1Intelligent built-in air pump

Publication Date: 2025.03.26 BESTWAY INFLATABLES & MATERIAL

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AI summary

An air pump is provided, the air pump comprising: an air pump housing; a main air pump (3); an air-supplementing pump (5); an air pressure sensor (7); and a control device (8). The control device (8) is electrically connected to the main air pump (3), the air-supplementing pump (5), and the air pressure sensor (7), and is configured to: send a main air pump (3) stop signal based on the air pressure sensor (7) detecting a threshold pressure in the inflatable body during operation of the main air pump (3); and send an air-supplementing pump (5) operation signal based on the air pressure sensor (7) detecting a pressure lower than the threshold pressure in the inflatable body when the main air pump (3) is not in operation.