Ignition electrode cap

Abstract

The invention discloses an ignition electrode cap. The ignition electrode cap comprises a shell, a connecting needle and a connecting sleeve, and further comprises a resistor; one ends of the connecting needle and the connecting sleeve are electrically connected with two ends of the resistor; a locking thread and a locking nut are arranged on the outer surface of a high-voltage ignition wire hole; the locking nut is provided with a hole for penetrating through a high-voltage ignition wire; a clamping piece is arranged in the high-voltage ignition wire hole at the front end of the locking thread; a conical surface is arranged on the inner side of the front end of the locking nut; the locking nut is connected with the locking thread, and extrudes the clamping piece to shrink to the inner side of the radial direction of the high-voltage ignition wire hole through the conical surface; an electrode hole is formed in one end of the connecting sleeve; an ignition electrode is correspondingly inserted in the electrode hole; and a snap spring groove and a snap spring incision communicated into the electrode hole are arranged on the surface of the electrode hole. The ignition electrode cap is fast in connection and reliable in contact, can effectively reduce high-frequency disturbance on the external, and reduces influence on flame detection of a combustion controller by disturbance signals.

Description

technical field [0001] The invention relates to the field of ignition electrode caps, in particular to a kind of fast connection, reliable contact, reducing external high-frequency interference, reducing the influence of interference signals on the flame detection of the combustion controller, and applied to combustion appliances in industrial kiln systems The ignition electrode cap between the ignition electrode and the high-voltage ignition wire at the output end of the ignition transformer under the control of the combustion controller. Background technique [0002] figure 1 It is the central sectional view of the existing ignition electrode cap. It is mainly composed of connecting pin 4', connecting sleeve 6', retaining spring 7', electrode cap shell 8', and connecting spring 11'. The high-voltage ignition wire of the ignition transformer is inserted into the high-voltage ignition wire matching hole 8A' of the electrode cap shell, and screwed into the needle part 4A' o...

AI Technical Summary

Problems solved by technology

[0004] Due to unavoidable vibration and touch during use, the connection pin 4' has a taper, and the connection between the high-voltage ignition wire and the connection pin 4' will be loose; when the electrode cap shell 8' is injected, the connection pin 4' and the connection spring 11 There will be plastic residue in the contact part of ', which will affect the passage of ignition current; the connection sleeve 6' is connected to the electrode cap shell 8' through the thread 6E' of the connection sleeve, and it will also loosen due to inevitable vibration and touch; there is no current limiting resistor , the high-voltage ignition current is likely to generate high-frequency interference to the outside world, and generate high-current impact on the control circuit

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