Anesthetic Vaporizer Integrated Compensation Unit
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Solution Overview
Problem
Conventional anesthetic vaporizers face issues with temperature-induced concentration deviations and inefficient space utilization due to independent temperature and pressure compensation units, leading to reduced vaporization speed and increased concentration deviations over time, along with complex assembly and non-compact structure.
Innovation Solution
An anesthetic vaporizer design incorporating a pressure compensation unit with a curved, sealed vent slot and a heat conductor within the reservoir, integrated with a temperature compensation unit to stabilize gas flow and prevent reverse flow, allowing for compact structure and improved assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressure compensation unit is placed outside the reservoir, then it can prevent reverse flow and stabilize gas flow, but it occupies external space and results in a non-compact structure
Solution Approach 1:
The pressure compensation unit is integrated within the reservoir structure, merging two previously separate components (pressure compensation mechanism and reservoir) into a single unified structure. This eliminates the need for external placement while maintaining the pressure compensation function, thereby achieving compactness without sacrificing gas flow stability.
2Adaptability or versatility
If the temperature compensation unit and pressure compensation unit are independent, then each can perform its specific function, but the structure becomes complex and assembly becomes difficult
Solution Approach 1:
The integrated compensation unit is designed to perform both temperature compensation and pressure compensation functions within a single structure. The unit incorporates a bimetallic strip for temperature compensation and a pressure-sensitive diaphragm for pressure compensation, allowing both functions to coexist in one component, thereby reducing assembly complexity while maintaining functional independence.
3Productivity
If the vaporizer operates continuously, then it can provide continuous anesthetic vapor, but the temperature drops due to heat absorption during vaporization, reducing vaporization speed and causing concentration deviation
Solution Approach 1:
The temperature compensation mechanism uses a bimetallic strip that responds to temperature changes in the vaporizing chamber. As temperature drops during continuous operation, the bimetallic strip automatically adjusts the position of the temperature compensation orifice, increasing the flow of fresh gas through the bypass to compensate for the reduced vaporization rate, thereby maintaining stable anesthetic vapor concentration.
4Reliability
If a temperature compensation unit is added to maintain concentration stability, then concentration deviation is reduced, but the device structure becomes more complex
Solution Approach 1:
The temperature compensation unit is merged with the pressure compensation unit into a single integrated compensation mechanism. The bimetallic strip and pressure-sensitive diaphragm are combined in one structure, allowing both temperature and pressure compensation functions to be achieved without adding separate independent units, thereby maintaining concentration stability while minimizing structural complexity.
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 integrated pressure and temperature compensation units effectively maintain consistent anesthetic vapor concentration and reduce temperature drop, enhancing vaporization efficiency and compactness of the device.
Implementation Method 1
The pressure compensation unit is provided within the reservoir and has a heat conductor which is directly contacted with the anesthetic agent to transfer heat
Implementation Method 2
the temperature of the vaporizer drops since the anesthetic agent has to absorb heat to vaporize
Implementation Method 3
the anesthetic agent has to absorb heat to vaporize
Implementation Method 4
A part of the wick unit 4′ is immersed into the anesthetic agent so that the wick unit 4′ is filled with the saturated vapor of anesthetic gas
Data Source
AI summary
An anesthetic vaporizer is disclosed herein which comprises a fresh gas inlet, a mixed gas outlet, a first gas branch circuit, a second gas branch circuit and a vaporizing chamber. The vaporizing chamber has a reservoir for containing an anesthetic agent. The first gas branch circuit connects the fresh gas inlet and the mixed gas outlet. The second gas branch circuit comprises a first pneumatic circuit, a pressure compensation unit, a second pneumatic circuit, a wick unit and a third pneumatic circuit. The pressure compensation unit has a curved, continuous and sealed vent slot. The wick unit has an immersion portion which is directly contacted with the anesthetic agent in the reservoir. The fresh gas inlet, the first pneumatic circuit, the vent slot, the second pneumatic circuit, the wick unit, the third pneumatic circuit and the mixed gas outlet are sequentially connected with one another. The pressure compensation unit is provided in the reservoir and has a heat conductor which is directly contacted with the anesthetic agent to transfer heat. The vent slot is formed in the heat conductor. The anesthetic vaporizer according to the invention can stabilize the concentration of the anesthetic vapor in the outputted mixed gas.