Unlock instant, AI-driven research and patent intelligence for your innovation.

A circuit that can accurately detect the magnitude of the AC source flame ion current

A technology of flame ions and current magnitude, applied in the field of circuits, can solve problems such as misjudgment of flame needles, inability to use flame combustion quality monitoring, etc., and achieve the effect of good data basis

Active Publication Date: 2015-12-23
佛山市赛扬电子科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only detect the qualitative characteristics of the flame signal, and solve the problem of whether the flame signal is present, and cannot be used to monitor the quality of flame combustion, that is, the combustion condition
In addition, because the DC signal flame detection method (applying a DC voltage signal between the flame and the ground) cannot solve the problem that the flame needle is prone to misjudgment in a wet state, this technology has been basically eliminated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A circuit that can accurately detect the magnitude of the AC source flame ion current
  • A circuit that can accurately detect the magnitude of the AC source flame ion current
  • A circuit that can accurately detect the magnitude of the AC source flame ion current

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0035] Another embodiment of the present invention: as figure 2 As shown, the output port C pin of the first operational amplifier U1A is connected to the common mode input port D pin of the second operational amplifier U2A; the common mode input port A pin of the first operational amplifier U1A is connected to the second operational amplifier U2A The E pin of the differential mode input port is connected.

[0036] Such as image 3 , Figure 4 As shown, the signal sampling circuit includes a FID, a first resistor R1, a second resistor R2, a sine wave AC signal source V1, a second capacitor C2 and a resistor R0;

[0037] The FID, the first resistor R1 and the second resistor R2 are connected in series in sequence, and the second resistor R2 is connected to the node of the non-polar capacitor C1 and the diode D1;

[0038] The resistor R0, the sine wave AC signal source V1 and the second capacitor C2 are connected in series, and the other end of the second capacitor C2 is conne...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A circuit capable of accurately detecting the flame ion current of an AC source, which includes a signal sampling circuit, a sampling modulation circuit, an output shaping circuit and a DC level signal source; the signal sampling circuit is connected to the sampling modulation circuit, and the sampling modulation circuit is connected to the output shaping circuit ; The DC level signal source is connected to the first operational amplifier (U1A) and the second operational amplifier (U2A); due to the adoption of such a structure, the data sampling and quantification of the combustion flame signal during AC detection is used to reliably monitor the combustion conditions of the product and Combustion performance, and take corresponding control measures to provide an excellent data basis.

Description

technical field [0001] The invention is a circuit capable of accurately detecting the magnitude of the flame ion current of an AC source. Background technique [0002] In the current existing technology, in gas water heaters, gas stoves, gas heating furnaces and other products, flame combustion conditions are the key factors to ensure the core performance indicators such as product combustion performance, efficiency, smoke emission safety, and environmental protection, especially in such products. In high-end technical fields such as forced combustion technology, premixed (including semi-premixed) combustion technology, and condensing combustion heat exchange technology, accurate detection of flame ion current is the most direct and effective basis for monitoring flame combustion conditions. Therefore, it is also the key to ensure that core performance indicators such as product combustion performance, efficiency, smoke emission safety, and environmental protection meet prod...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/00
Inventor 胡志恒刘筱明高中伟
Owner 佛山市赛扬电子科技有限公司