Beverage Maker Cover-Actuated Pressure Release for Hot Liquid Safety
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Solution Overview
Problem
Conventional air pump operated beverage makers can continue dispensing heated beverages if the lid is opened, leading to potential burn injuries due to unregulated pressure release, and rely on expensive electronic solenoids for safety, which may malfunction or fail.
Innovation Solution
A mechanical pressure release system is implemented using a valve stem and seat mechanism actuated by the cover, which disengages to release pressure when the lid is opened, preventing further discharge of hot liquid without relying on electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electronic solenoid is used to control the pressure release valve, then the beverage maker can stop dispensing heated beverage when the lid is opened, but the device complexity and cost increase
Solution Approach 1:
The patent replaces the electronic solenoid system with a purely mechanical pressure release valve system. The valve uses a spring-loaded mechanism with a weight that automatically opens when pressure exceeds a certain threshold, eliminating the need for electronic components while maintaining safety functionality.
Solution Approach 2:
The pressure release valve is designed to automatically respond to pressure changes without external control. The spring and weight mechanism self-regulates the pressure, opening the valve when pressure exceeds the set threshold and closing it when pressure normalizes, providing autonomous safety operation.
2Object-affected harmful factors
If an electronic solenoid is used to control the pressure release valve, then the beverage maker can prevent spray of hot liquid, but the manufacturing cost increases
Solution Approach 1:
The patent employs simple, inexpensive mechanical components (spring, weight, valve seat) instead of expensive electronic solenoids. These mechanical parts are easier to manufacture and replace, reducing both initial manufacturing cost and long-term maintenance costs while effectively preventing hot liquid spray.
Solution Approach 2:
The electronic solenoid is replaced with a mechanical spring-loaded valve system that uses basic mechanical principles to control pressure release, significantly reducing component cost and manufacturing complexity while maintaining the safety function of preventing hot liquid spray.
3Stress or pressure
If the pressure release valve is electronically controlled, then the system can regulate pressure, but the reliability decreases due to potential electronic malfunction
Solution Approach 1:
The pressure release valve operates autonomously based on physical pressure principles. The spring and weight mechanism automatically responds to pressure changes, opening the valve when pressure exceeds the threshold and closing it when pressure normalizes, eliminating reliance on electronic systems and improving reliability.
Solution Approach 2:
The patent replaces the electronic pressure control system with a mechanical spring-loaded valve system that uses fundamental mechanical principles to regulate pressure. This mechanical system is inherently more reliable as it has no electronic components that can malfunction, corrode, or fail due to moisture.
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
Ensures safe operation by immediately stopping the discharge of hot liquid when the lid is opened, enhancing user safety and reducing costs by eliminating the need for expensive electronic solenoids.
Implementation Method 1
A pressure release valve is in continuous fluid communication with a second outlet of the HLG, the pressure release valve comprising a valve seat mounted to the cover and a complementary valve stem mounted to the body. The valve stem sealingly engages the valve seat in the closed position of the cover, thereby preventing release of pressure within the tank therethrough.
Implementation Method 2
the pressure release valve comprising a valve stem, a valve seat, and a biasing member biasing the valve stem into disengagement from the valve seat
Data Source
AI summary
A beverage maker includes a body and a cover movably attached to the body. The body includes therein (among other components), a hot liquid generator (HLG) having a tank, an inlet for receiving liquid into the tank and an outlet, at least one heater in thermal communication with the liquid in the HLG tank, and a discharge port in fluid communication with the outlet of the HLG for discharge of the liquid. The cover is movably attached to the body between a closed position and an open position. At least one valve permits the discharge of the liquid via the discharge port in a closed position of the cover. The at least one valve is mechanically actuated by the cover in the open position of the cover to substantially prevent the discharge of the liquid via the discharge port.