Blower Housing Damage Detection via Flow and Pressure Shifts
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Solution Overview
Problem
Existing methods fail to detect damage to the housing of a blower in heating devices caused by flame flashbacks, which can lead to leaks or deformations, and existing sensors are inadequate for registering such damage.
Innovation Solution
A method involving the detection of parameters such as flow rate, power consumption, thermal output, and differential pressure to identify damage to the blower housing, using existing regulation and control systems with software-based implementation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sensors are used to detect flame flashback, then basic combustion parameters can be monitored, but damage to the blower housing caused by flame flashback cannot be detected
Solution Approach 1:
The patent changes the detection parameter from direct housing damage measurement to indirect parameters (power consumption, flow rate, thermal output, differential pressure) that reflect housing condition. By monitoring these operational parameters, the system can infer housing damage without requiring direct physical contact sensors on the housing structure.
Solution Approach 2:
The patent uses operational parameters as intermediaries to detect housing damage. Instead of directly measuring housing integrity, the system measures power consumption, flow rate, thermal output, and differential pressure, which are affected by housing damage but easier to measure accurately with existing sensors.
2Reliability
If new detection systems are implemented to detect housing damage, then detection reliability improves, but device complexity and structural changes increase
Solution Approach 1:
The patent makes existing multi-functional sensors serve dual purposes: their primary function for combustion control and an additional function for housing damage detection. The same sensors that monitor combustion parameters are also used to detect housing damage, eliminating the need for separate detection systems and reducing overall device complexity.
Solution Approach 2:
The system uses its own operational parameters (power consumption, flow rate, thermal output, differential pressure) to detect housing damage. The heating device monitors itself through existing control sensors,无需 external or additional specialized detection equipment, thereby avoiding increased system complexity.
3Ease of manufacture
If existing sensors are used for combustion control, then basic monitoring is achieved, but they are inadequate for registering housing damage
Solution Approach 1:
The patent changes how existing sensors are utilized by monitoring specific parameter patterns and combinations rather than single threshold values. By analyzing changes in power consumption, flow rate, thermal output, and differential pressure in relation to each other, the system enables housing damage detection using existing sensors without requiring new sensor types.
Solution Approach 2:
The patent enables existing combustion control sensors to serve dual functions: primary combustion monitoring and secondary housing damage detection. This multi-functionality approach allows integration into existing systems without additional hardware while achieving reliable damage detection through sophisticated parameter analysis.
Data Source
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AI summary
A method for detecting damage to the housing (8) of a blower (2) of a heating appliance (1) is presented, wherein the blower (2) supplies a mixture of air and fuel gas to a burner (3) of the heating appliance (1), and at least one parameter (20) dependent on the condition of the housing (8) is detected, and if a limit value (21, 22) is exceeded or fallen below by the parameter (20), damage to the housing (8) is inferred. The at least one detected parameter (20) can be, in particular, a determined mass flow rate or volume flow rate of the blower (2), a power consumption of the blower (2), a thermal output of the heating appliance (1), a heating time of a heating water circuit (14) connected to the heating appliance (1), and/or a differential pressure between two points upstream and downstream of the blower (2).