Suspension Float Humidification Chamber Prevents Plate Contact
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Solution Overview
Problem
Prior humidification chamber designs with float-based water level control valves often result in the stand-off rib contacting the heat conductive plate when water levels are low or when water replenishment is insufficient, leading to inefficiencies and potential damage.
Innovation Solution
A humidification chamber with a suspension-type float, position limiting element, and heated plate, featuring a sealing sheet on the float's top end and guiding ribs within the water inlet tube, which allows the float to be suspended and prevent contact with the heated plate when liquid is scarce, and includes a pressure release vent to manage expansion pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a stand-off rib is used to prevent float contact with the heat conductive plate, then the float is protected from direct contact, but the stand-off rib still contacts the plate when water level is too low or water replenishment is insufficient
Solution Approach 1:
The patent introduces a position limiting element that extends in the vertical dimension to actively restrict the float's downward movement. This transforms the passive stand-off rib (which only provides minimal clearance) into an active dimensional constraint that prevents the float from reaching the heat conductive plate even when water level is low, thereby resolving the contact issue in the vertical dimension.
Solution Approach 2:
The position limiting element acts as an intermediary mechanism between the float and the heat conductive plate. Instead of relying solely on the stand-off rib's fixed geometry, the position limiting element mediates the float's movement by providing a controllable stopping point, preventing direct contact with the plate while allowing normal float operation during adequate water levels.
2Ease of operation
If the float is allowed to move freely to control water level, then water level control is effective, but the float bottom contacts the heated plate when liquid is scarce
Solution Approach 1:
The position limiting element is pre-installed in the water inlet tube to establish a maximum downward position for the float before any contact with the heated plate can occur. This preliminary structural arrangement ensures that even when liquid is scarce and the float naturally wants to descend, it is stopped by the position limiting element first, preventing harmful contact while preserving water level control functionality.
Solution Approach 2:
The position limiting element provides a protective barrier that cushions against the potential harmful effect of float-heated plate contact. By placing this limiting structure in advance within the water inlet tube, the system prepares a safety mechanism that activates before contact can occur, similar to a cushion that prevents impact damage before it happens.
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 the float from contacting the heated plate even when the chamber is empty, ensures efficient liquid replenishment, and maintains humidity control by preventing liquid infiltration and managing pressure, thus enhancing the safety and operational efficiency of the humidification process.
Implementation Method 1
when a liquid enters into the chamber space by a water inlet hole of the water inlet, the float will rise to comply with the water level increasing
Implementation Method 2
when the sealing sheet contacts the water inlet hole of the water inlet, the sealing sheet can block the water inlet hole of the water inlet
Implementation Method 3
when the water level of the chamber space is fell down, the position limiting element can prevent a bottom of the float from contacting the heated plate
Implementation Method 4
the heated plate is used for sealing the shell body to form a chamber space
Data Source
AI summary
A humidification chamber having suspension type float, the humidification chamber comprises a shell body, a water level control valve and a heated plate; the shell body has a water inlet, a gas inlet and a gas outlet; the water level control valve is provided with a position limiting element, a float and a sealing sheet; wherein the sealing sheet is disposed on a top end of the float, the heated plate is used for sealing the shell body to form a chamber space; when a liquid enters into the chamber space by a water inlet hole of the water inlet, the float will rise to comply with the water level increasing; when the sealing sheet contacts the water inlet hole of the water inlet, the sealing sheet can block the water inlet hole of the water inlet; when the water level of the chamber space is fell down, the position limiting element can prevent a bottom of the float from contacting the heated plate.