Breast Pump Silicone Bowl Structure for Milk Reflux Prevention
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Solution Overview
Problem
Existing breast pumps suffer from milk reflux, causing pollution and waste due to the continuous change in air pressure inside the pump, leading to milk splashing on the user's body or clothes.
Innovation Solution
A breast pump design incorporating a grooved milk bowl, silica gel bowl with a one-way valve, and a main engine to create a negative pressure cavity, allowing milk to flow unidirectionally into a milk storage cavity, preventing reflux through a deformable wall and one-way valve configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the air pump reciprocates to drive the diaphragm to generate negative pressure, then milk can be sucked into the storage cavity, but milk reflux occurs when pressure returns to normal, causing pollution and waste
Solution Approach 1:
The patent extracts the harmful refluxing milk from the system by providing a dedicated discharge channel that directs reflux milk away from the storage cavity and user body, eliminating the pollution problem while maintaining the reciprocating pressure mechanism for milk collection
Solution Approach 2:
The patent introduces a one-way valve as an intermediary component between the storage cavity and the discharge channel. This valve allows milk to flow in one direction (into the storage cavity) but prevents reverse flow (reflux), thereby solving the pollution problem without affecting the milk collection function
2Device complexity
If a traditional breast pump structure is used, then the device is simple, but assembly efficiency is low and milk reflux cannot be prevented
Solution Approach 1:
The patent merges the bowl and flange into an integrated assembly where the bowl is directly connected to the flange, eliminating separate assembly steps and improving assembly efficiency while maintaining structural simplicity and enabling effective reflux prevention through the integrated one-way valve 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
Prevents milk reflux by ensuring milk flows only into the storage cavity, maintaining cleanliness and improving assembly efficiency with a high degree of integration and reduced deformation resistance.
Implementation Method 1
a side wall of the silica gel bowl is provided with an one-way valve, the silica gel bowl is also provided with a milk collecting cavity and a negative pressure cavity
Implementation Method 2
a main engine is mounted on an outside of the grooved milk bowl, a suction end of the main engine is communicated with the negative pressure cavity, the main engine is used for forming negative pressure in the negative pressure cavity
Implementation Method 3
the milk collecting cavity and the negative pressure cavity is separated by a deformable wall of the silica gel bowl
Data Source
AI summary
A breast pump includes a milk bottle, a silica gel bowl, a silica gel flange and a main machine; the silica gel bowl is mounted inside the milk bottle, the side wall of the silica gel bowl is provided with an one-way valve, the silica gel bowl is provided with a milk collecting cavity and a negative pressure cavity, separated by a deformed wall of the silica gel bowl; the peripheral portion of the silica gel flange is tightly connected with the milk bottle, the central portion of the silica gel flange is tightly connected with the silica gel bowl and provided with a through hole communicated with the milk collecting cavity, and the inner wall of the milk bottle and the inner wall of the silica gel flange enclose to form the milk storage cavity; the main machine is arranged on the outside of the milk bottle.