Single-Motor Liquid Foam Delivery Using Cam-Driven Dual Pumps
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Solution Overview
Problem
Conventional liquid foam delivery devices require two motors to control the liquid and gas pumps, leading to inefficiencies in space and power usage.
Innovation Solution
A liquid foam delivery device utilizing a single motor with a rotating shaft, a linear transmission mechanism, and unidirectional input/output mechanisms for gas and liquid, which convert rotational motion into linear reciprocating motion to deliver foam efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two motors are used to control liquid pump and gas pump separately, then each pump can be controlled independently, but the device complexity and power consumption increase
Solution Approach 1:
The patent combines the liquid pump and gas pump control into a single motor system. The motor drives a cam mechanism that simultaneously controls both the liquid pump piston and gas pump piston, reducing the number of motors from two to one while maintaining coordinated control of both pumping functions
Solution Approach 2:
The single motor serves multiple functions by driving the cam mechanism that controls both pumping operations. The cam mechanism acts as a universal control element that translates single motor rotation into coordinated reciprocating motion for both liquid and gas pumps
2Ease of operation
If two motors are used to control liquid pump and gas pump separately, then each pump can be controlled independently, but the space efficiency deteriorates
Solution Approach 1:
The patent merges the control systems of liquid and gas pumps into a single integrated motor-cam assembly. This consolidation reduces the spatial footprint by eliminating one motor and its associated control components, while the cam mechanism compactly coordinates both pumping actions in a shared space
3Ease of operation
If two motors are used to control liquid pump and gas pump separately, then each pump can be controlled independently, but the power efficiency deteriorates
Solution Approach 1:
The patent combines the power consumption of two separate motors into a single motor system. The cam mechanism efficiently transmits power from one motor to both pumps, eliminating the redundant power consumption of running two motors simultaneously while maintaining the ability to control both pumping functions
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 minimizes the number of components, enables miniaturization, simplifies assembly, and reduces costs by using a single motor to deliver both gas and liquid effectively.
Implementation Method 1
The linear transmission mechanism comprises an eccentric wheel, a bearing and a reciprocating transmission component. The eccentric wheel is eccentrically fitted around the rotating shaft.
Implementation Method 2
The unidirectional input/output gas mechanism comprises a suction cup component and a film unidirectional valve component. The suction cup component has an end portion connected to the linear transmission mechanism.
Data Source
AI summary
A liquid foam delivery device includes a pump proper, a linear transmission mechanism, a unidirectional input/output gas mechanism and a unidirectional input/output liquid mechanism. The pump proper has a rotating shaft. The linear transmission mechanism converts rotational motion output by the rotating shaft into linear reciprocating motion perpendicular to the rotating shaft. The unidirectional input/output gas mechanism admits gas into a gas inlet and discharge gas from a gas outlet in a direction perpendicular to the rotating shaft through the linear reciprocating motion of the linear transmission mechanism. The unidirectional input/output liquid mechanism delivers liquid admitted through a liquid inlet to a liquid outlet through the rotational motion output by the rotating shaft. The liquid foam delivery device delivers gas and liquid with only one pump proper and one rotating shaft to therefore minimize the required number of constituent components, achieve miniaturization, render assembly easy and cut cost.