Vehicle Spray Washer Nozzle Direct Heating Defrosting
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Solution Overview
Problem
Existing spray washer nozzles for vehicles face issues with freezing in winter conditions due to indirect heating methods, leading to reduced defrosting performance, high power consumption, and repairability challenges.
Innovation Solution
A spray washer nozzle design featuring a heat emitter, such as a plastic or ceramic PTC chip, directly integrated into the nozzle body for direct heating of washer liquid, allowing for improved defrosting efficiency, repairability, and a dual spray nozzle structure with enhanced ejection angle through center and stagnant flow movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If indirect heating methods through heat emitting elements are used, then the nozzle can be heated, but the defrosting performance is lowered and power consumption is excessive
Solution Approach 1:
The patent extracts the heat emitter from the conventional indirect heating system and integrates it directly into the spray nozzle chip. This allows the washer liquid to be heated directly as it passes through the nozzle passage, eliminating the need for indirect heat transfer through nozzle walls and significantly improving defrosting efficiency while reducing power consumption.
Solution Approach 2:
The patent introduces a heat emitter as an intermediary element that is directly integrated into the spray nozzle chip. This heat emitter serves as the mediator that transfers thermal energy directly to the washer liquid passing through the nozzle passage, enabling efficient direct heating and solving the contradiction between defrosting performance and power consumption.
2Temperature
If indirect heating methods are used, then heating can be provided, but defrosting time is excessive (3 to 5 minutes)
Solution Approach 1:
The patent extracts the heating function from the indirect heating system and relocates the heat emitter directly into the spray nozzle chip. This repositioning enables immediate heating of the washer liquid as it passes through the nozzle passage, dramatically reducing defrosting time from 3-5 minutes to a much shorter duration.
Solution Approach 2:
The patent implements preliminary heating action by integrating the heat emitter directly into the spray nozzle chip, so that the washer liquid is heated immediately as it passes through the nozzle passage rather than requiring prolonged indirect heating. This preliminary action significantly reduces the defrosting time required.
3Area of stationary object
If spray type washer nozzle is used to enhance cleaning area, then wide area cleaning is achieved, but the nozzle is susceptible to freezing in winter conditions
Solution Approach 1:
The patent merges the heating function with the spray nozzle chip by integrating the heat emitter directly into the nozzle structure. This combination allows the spray type washer nozzle to maintain its wide cleaning area capability while simultaneously providing direct heating to prevent freezing in winter conditions, thus resolving the contradiction between cleaning area and freezing resistance.
4Temperature
If heat emitting elements are used for heating, then heating function is provided, but repairability is difficult
Solution Approach 1:
The patent segments the heating system by integrating the heat emitter as a separate, replaceable component within the spray nozzle chip assembly. This segmentation allows the heat emitter to be easily removed and replaced independently, significantly improving repairability while maintaining the heating function.
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 solution enhances defrosting efficiency, reduces power consumption, and expands the cleaning area by directly heating the washer liquid, shortening defrosting time and allowing for easier maintenance while increasing the ejection angle of the washer liquid.
Implementation Method 1
a heat emitter is inserted into and mounted to the passage formed in the interior of the spray nozzle chip such that washer liquid flowing through the passage of the spray nozzle chip is heated while directly contacting the heat emitter
Implementation Method 2
a heat emitter such as plastic PTC or ceramic PTC is inserted into and mounted to the space such that washer liquid can be heated while directly contacting the heat emitter
Data Source
AI summary
A spray washer nozzle for a vehicle may include a nozzle body installed in a hood of a vehicle as a unit for ejecting washer liquid to a windshield, and connected to a hose for supplying the washer liquid and fixedly installed in a hood panel at the same time, and a spray nozzle chip having a passage therein and inserted into a head part of the nozzle body, in which a heat emitter is inserted into and mounted to the passage formed in the interior of the spray nozzle chip such that washer liquid flowing through the passage of the spray nozzle chip is heated while directly contacting the heat emitter.