CN215675299U

CN215675299U - Simple CO igniter

Info

Publication number: CN215675299U
Application number: CN202122223990.3U
Authority: CN
Inventors: 孙黎明; 包俊; 马强
Original assignee: Chongqing Yuxin Pingrui Electronic Co ltd
Current assignee: Chongqing Yuxin Pingrui Electronic Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-01-28
Anticipated expiration: 2031-09-14

Abstract

A simple CO igniter comprises a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5 and an ignition coil; the emitter of the transistor Q3 is connected to the cathode of the diode D2, the anode of the diode D2 is connected to the quenching line, the collector of the transistor Q3 is connected to the ground GND, the base of the transistor Q3 is connected to the collector of the transistor Q5, and the emitter of the transistor Q5 is connected to the quenching line via the capacitor C1; a resistor R1 is connected between the base of the triode Q3 and a ground end GND, and a resistor R6 is connected between the base of the triode Q3 and a flameout wire; the collector of the transistor Q3 is connected with the base of the transistor Q4, the collector of the transistor Q4 is connected with the cathode of the diode D1, and the anode of the diode D1 is connected with the ground terminal GND through the resistor R5; the problem that the engine cannot be normally flamed due to the fact that the high-energy igniter can still have induction high voltage of more than 3KV when the flywheel magnetic induction line is cut at the secondary level under the high rotating speed after CO alarming is solved.

Description

Simple CO igniter

Technical Field

The utility model relates to the field of fuel motors, in particular to a simple CO igniter.

Background

The control type igniter on the market at present mainly comprises two types of single chip microcomputer control and time delay circuit control.

Firstly, the igniter is controlled by the single chip microcomputer, flameout of the igniter is realized by the single chip microcomputer, the production cost is high, and the reliability is poor.

Secondly, the delay circuit controls the igniter, and a special delay circuit is used, so that the consistency is poor, and the circuit structure is complex.

In both the two types, after CO alarming, the high-energy igniter has the problem that the engine cannot be normally flamed due to the fact that the induction high voltage of more than 3KV still exists in the secondary cutting flywheel magnetic induction line under the high rotating speed.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a simple CO igniter, which has the following specific technical scheme:

a plain type CO igniter which is characterized in that: comprises a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5 and an ignition coil;

the emitter of the transistor Q3 is connected to the cathode of the diode D2, the anode of the diode D2 is connected to the quenching line, the collector of the transistor Q3 is connected to the ground GND, the base of the transistor Q3 is connected to the collector of the transistor Q5, and the emitter of the transistor Q5 is connected to the quenching line via the capacitor C1;

a resistor R1 is connected between the base of the triode Q3 and a ground end GND, and a resistor R6 is connected between the base of the triode Q3 and a flameout wire;

the collector of the transistor Q3 is connected with the base of the transistor Q4, the collector of the transistor Q4 is connected with the cathode of the diode D1, and the anode of the diode D1 is connected with the ground terminal GND through the resistor R5;

the common end of the diode D1 and the resistor R5 is connected with the base electrode of a triode Q1, the emitter electrode of the triode Q1 is connected with the ground end GND, the collector electrode of the triode Q1 is connected with the base electrode of a triode Q2, and the collector electrode of the triode Q2 is connected with the ground end GND;

the emitter of the triode Q2 is connected with a flameout wire through a resistor R8;

one end of a primary coil T1 of the ignition coil is connected to a ground end GND, and the other end of the primary coil T1 is connected to a flameout wire;

the cathode of the diode D2 is connected to the first input of the control circuit and the anode of the diode D2 is connected to the second input of the control circuit.

The utility model has the beneficial effects that: the utility model can reduce the production and manufacturing cost of the control type igniter, and improve the consistency and the reliability. The problem that the engine cannot be normally flamed due to the fact that the high-energy igniter can still have induction high voltage of more than 3KV when the flywheel magnetic induction line is cut at the secondary level under the high rotating speed after CO alarming is solved.

Drawings

Fig. 1 is an overall structural view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1:

a simple CO igniter comprises a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5 and an ignition coil;

the cathode of the diode D2 is connected to the CO line a of the control circuit and the anode of the diode D2 is connected to the CO line B of the control circuit. The control circuit is an existing CO control circuit, when CO is normal, the CO line A, CO control circuit and the CO line B form a closed loop, and when CO alarms, the CO control circuit is disconnected, so that the CO line A, CO control circuit and the CO line B cannot form a closed loop.

The principle of the utility model is as follows:

the working process of the control circuit is that the CO line A is disconnected with the CO line B through the CO control circuit, due to the unidirectional conduction characteristic of the diode D2, the current Ice flowing through the triode Q3 cannot be conducted in the forward direction, the triode Q4 cannot be controlled to be cut off by the triode Q3, and further cannot be controlled to be cut off by the triode Q1 and the triode Q2, because the triode Q1 and the triode Q2 form a Darlington structure, the triode Q1 and the triode Q2 in the Darlington structure are equivalent to a direct short circuit of a conducting wire, because the primary electromotive force of an igniter on a magnetic circuit with an iron core cannot rise, the secondary electromotive force cannot rise to limit the no-load voltage of the igniter, reliable flameout control is finally realized, and when the CO line A is closed with the CO line B, the igniter normally ignites.

The specific working principle of the circuit is that,

the emitter of the transistor Q3 is connected to the cathode of the diode D2, and the anode of the diode D2 is connected with a flameout wire;

a CO line A is led out from the cathode of the diode D2, and a CO line B is led out from the anode of the diode D2;

the CO line A and the CO line B are connected with the CO control circuit, and when the CO control circuit works normally, the igniter ignites normally;

when the CO control circuit CO alarms and extinguishes, a CO line A, CO, a line B and the CO control circuit cannot form a closed loop, and the triode Q3 cannot control the triode Q4, the triode Q1 and the triode Q2 to be cut off due to the unidirectional conductivity of the diode D2.

The current at the time of the negative voltage on the extinction line is always conducted by the diode Q2, and high-voltage discharge cannot be generated on the high-voltage side of the high-voltage coil.

When the extinguishing line is positive, current flows through the transistor Q1 through the diode D2 to discharge excessive electricity, so that high-voltage discharge cannot be generated on the high-voltage side of the high-voltage coil. Finally, under the control action of the CO control circuit, the igniter cannot generate high-voltage discharge in the whole working period, the igniter can be reliably extinguished, and the voltage generated by the coil cutting the flywheel magnetic induction wire is less than 1KV, so that the flameout function of the igniter controlled by the CO module is realized, and the personal safety is further ensured.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A plain type CO igniter which is characterized in that: comprises a triode Q1, a triode Q2, a triode Q3, a triode Q4, a triode Q5 and an ignition coil;