Snow Intake Housing Geometry for Low-Resistance Snow Throwers
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Solution Overview
Problem
Existing snow throwers face challenges in efficiently clearing snow while minimizing resistance and ensuring stable operation, particularly in terms of snow intake and discharge mechanisms.
Innovation Solution
The snow thrower design includes specific geometric configurations such as a snow intake housing with a front opening portion positioned to minimize contact with snow, an auger with optimized dimensions and angles, and a discharge chute with controlled height differences to enhance snow discharge efficiency and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the front opening portion of the snow intake housing is positioned closer to the ground to improve snow intake efficiency, then snow clearing effectiveness is improved, but the risk of snow accumulation and resistance increase
Solution Approach 1:
The patent optimizes the vertical position parameter of the front opening portion, setting it at a specific height range (10-30mm from the ground) to balance snow intake efficiency and resistance prevention. This parameter optimization resolves the contradiction by finding the optimal operating point that maximizes productivity while minimizing harmful effects.
Solution Approach 2:
The inclined portion at the front opening is designed with a specific angle (30-60 degrees) to preliminarily guide snow into the intake housing before it can cause resistance or accumulation issues. This preliminary guiding action prevents the harmful effects while maintaining efficient snow intake.
2Productivity
If the discharge chute height difference is reduced to improve snow discharge efficiency, then discharge performance is improved, but structural stability may be compromised
Solution Approach 1:
The patent optimizes the height difference parameter between the discharge chute and snow intake housing to a specific range (20-50mm). This parameter optimization achieves the best balance between discharge efficiency and structural stability, resolving the technical contradiction by identifying the optimal value range.
3Productivity
If the auger diameter is increased to improve snow sweeping capability, then snow clearing effectiveness is improved, but device complexity and space requirements increase
Solution Approach 1:
The patent optimizes the auger diameter parameter to a specific range (220-450mm) that provides sufficient snow sweeping capability while avoiding excessive device complexity and space requirements. This parameter optimization resolves the contradiction between productivity and device 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 optimized design reduces resistance during operation, prevents snow accumulation, and ensures stable snow clearing and discharge, enhancing the overall efficiency and stability of the snow thrower.
Implementation Method 1
a rotating shaft and an auger disposed on the rotating shaft, where the rotating shaft is configured to rotate about a first axis
Implementation Method 2
a second electric motor and a snow throwing member, where the second electric motor is configured to drive the snow throwing member to rotate to throw snow from the auger towards the discharge chute
Data Source
AI summary
A snow thrower includes walking wheels, a snow sweeping assembly, and a snow intake housing; where the walking wheels support the snow thrower in walking on the ground; the snow sweeping assembly includes a rotating shaft and an auger disposed on the rotating shaft, where the rotating shaft is configured to rotate about a first axis; and the snow intake housing accommodates at least part of the snow sweeping assembly. The snow intake housing has a front opening portion for snow intake, and the distance L1 between a projection of a highest point of the front opening portion on a first plane and a projection of the first axis on the first plane is less than or equal to 20 mm, where the first plane is substantially parallel to the horizontal plane.