Cooling Water Valve Layout for Low-Resistance Temperature Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cooling water control valve devices experience increased flow resistance and decreased thermal response due to the presence of temperature detection media in bypass passages, especially when a large amount of cooling water flows, which can lead to reduced water flow from the heat source and impaired temperature detection.
Innovation Solution
The cooling water control valve device incorporates a failsafe valve with a temperature detection medium housed entirely in the detour passage, avoiding protrusion into the bypass channel, and strategically positioning the temperature detection medium to minimize resistance and ensure smooth water flow, thereby enhancing thermal response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature detection medium is placed in the bypass passage, then the thermal response can be detected, but the flow resistance increases and the flow amount of water from the heat source decreases
Solution Approach 1:
The passage is divided into two separate segments: the bypass passage for water flow and the detour passage for temperature detection. The temperature detection medium is isolated in the detour passage, which branches off from the bypass passage, allowing temperature measurement without obstructing the main water flow path.
Solution Approach 2:
A detour passage acts as an intermediary channel that connects the bypass passage to the temperature detection medium. This intermediary structure allows thermal energy to be transferred to the detection medium without requiring the medium to be directly in the high-velocity water flow path, thus maintaining flow efficiency while enabling temperature detection.
2Measurement precision
If the temperature detection medium protrudes into the bypass channel, then temperature can be detected, but the flow resistance increases and thermal response is impaired
Solution Approach 1:
The detour passage provides a localized environment for the temperature detection medium that is optimized for thermal exchange, while the main bypass passage maintains its optimized flow characteristics. The local quality of the detour passage (smaller cross-section, direct thermal path) differs from the bypass passage (larger cross-section, smooth flow), allowing each to perform its specific function efficiently.
Solution Approach 2:
The temperature detection function is moved from the primary flow dimension (bypass passage) to a secondary dimension (detour passage that branches off). This dimensional transition allows temperature detection to occur in a separate thermal field while the water flow continues undisturbed in the original flow field.
3Temperature
If a large amount of cooling water flows through the bypass passage, then cooling efficiency is maintained, but the presence of temperature detection media increases resistance and reduces flow
Solution Approach 1:
The cooling system is segmented into a main bypass passage for high-volume cooling water flow and a separate detour passage for temperature detection. This segmentation allows the bypass passage to maintain large cross-sectional area and smooth flow characteristics for efficient cooling, while the detour passage handles only the small volume needed for temperature sensing.
Solution Approach 2:
The detour passage creates a simplified copy of the bypass passage environment specifically for temperature detection purposes. Instead of placing the detection medium directly in the high-velocity flow, a representative thermal copy is created in the detour passage, which captures the temperature characteristics without the hydrodynamic interference.
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
This configuration reduces flow resistance and maintains the flow amount of water from the heat source, improving the thermal response of the temperature detection medium, especially under high flow conditions.
Implementation Method 1
a temperature detection medium configured to detect a temperature of the cooling water when the cooling water flows through the detour passage
Data Source
AI summary
A valve is configured to control a flow amount of cooling water flowing in a main passage. A detour passage connects an engine to the main passage through the valve. A failsafe valve includes a valve body, which operates independently from the valve and enables the detour passage to open or close, and a temperature detection medium which manipulates the valve body based on a temperature of cooling water and enables the detour passage to open or close. A branch point is point at which an inlet point in which cooling water from the engine flows is branched to a bypass passage and the detour passage. The temperature detection medium does not protrude to the branch portion and is housed in the detour passage.