Induced draft fan and air conditioning system
Solution Overview
Problem
Induced draft fans in air conditioning systems lack intelligent temperature control, as they typically have only one temperature sensor inside the fan or pipeline, failing to account for indoor temperature conditions, leading to inaccurate operation.
Innovation Solution
Incorporating a first temperature sensor on an adapter connection line of the fan main body to detect indoor temperature remotely, along with a second sensor inside the fan to measure pipeline temperature, allowing for accurate comparison and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only one temperature sensor is installed inside the induced draft fan or air-conditioning pipeline, then the device complexity is reduced, but the measurement precision of indoor temperature is insufficient
Solution Approach 1:
The patent divides the temperature sensing function into two separate sensors: a first temperature sensor mounted on the adapter connection line for detecting indoor temperature, and a second temperature sensor disposed inside the fan main body for detecting pipeline temperature. This segmentation allows each sensor to perform its specific function independently, improving measurement precision without creating a single complex multi-functional sensor system.
Solution Approach 2:
The adapter connection line serves as an intermediary carrier that extends the sensing capability of the first temperature sensor away from the fan main body into the indoor environment. This intermediary structure enables the temperature sensor to measure indoor temperature remotely while maintaining electrical connection to the control circuit board, solving the problem of how to obtain accurate indoor temperature without placing a sensor directly in the room.
2Measurement precision
If the temperature sensor is installed inside the fan main body, then the device complexity is reduced, but the measurement precision of indoor temperature is compromised
Solution Approach 1:
The patent extends the temperature sensing function from the internal dimension (inside fan main body) to the external dimension (indoor environment) by mounting the first temperature sensor on the adapter connection line. This dimensional transition allows the sensor to access the indoor temperature field while remaining physically connected to the fan system through the adapter connection line, thereby improving measurement accuracy without requiring direct indoor installation.
3Measurement precision
If the first temperature sensor is mounted on the adapter connection line away from the fan main body, then the measurement precision of indoor temperature is improved, but the device complexity increases
Solution Approach 1:
The patent merges the first temperature sensor with the adapter connection line structure, using the existing adapter connection line as the mounting carrier for the temperature sensor. This merging approach integrates the sensing function into the existing power supply structure, avoiding the need for separate mounting brackets or additional wiring harnesses, thereby minimizing the increase in device complexity while achieving improved temperature measurement.
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
Enables precise fan operation by avoiding measurement errors, ensuring proper start-up and shut-down, and enhancing indoor temperature regulation.
Implementation Method 1
The first temperature sensor is mounted on the adapter connection line, electrically connected to the control circuit board inside the fan main body and is capable of detecting an indoor temperature at a location remote from the fan main body
Implementation Method 2
The second temperature sensor is disposed inside the fan main body and faces towards an air inlet end of the fan main body, and is electrically connected to the control circuit board inside the fan main body. It can detect the air temperature inside the fan main body or inside the pipeline.
Data Source
AI summary
The invention provides an induced draft fan and an air conditioning system. The induced draft fan includes a fan main body, a first temperature sensor, and a second temperature sensor. The fan main body includes an adapter connection line extending from the same for supplying power to the fan main body. The first temperature sensor is mounted on the adapter connection line, electrically connected to the control circuit board inside the fan main body and is capable of detecting an indoor temperature at a location remote from the fan main body. The second temperature sensor is disposed inside the fan main body and faces towards an air inlet end of the fan main body.