High-voltage discharge monitoring device for pulse igniter

Abstract

The utility model particularly relates to a pulse igniter high-voltage discharge monitoring device which comprises a high-voltage discharge needle IG, an inductance coil L1 is arranged on a wire of the high-voltage discharge needle IG, an A end of the inductance coil L1 is connected with a first rectifier diode D1, a B end of the inductance coil L1 is connected with a first resistor R1, the other end of a second resistor R2 is respectively connected with a third diode D3 and a signal output port IG-TEST end, and the other end of the third diode D3 is connected with a second rectifier diode D1. The other end of the third diode D3 is connected with a power supply end VCC, the high-voltage spray point IG is further connected with a pulse igniter, the pulse igniter is further connected with a control panel, the control panel is further connected with a relay switch JD, and one end of the relay switch JD is connected with an alternating current power supply VS. The beneficial effects of the utility model are that the inductance coil L1 detects the voltage value of the high-voltage discharge needle IG, and the voltage value is fed back to the control panel through the signal detection port IG-TEST end, so that the pulse igniter and the electromagnetic gas valve are in a disconnected state, and the advantages of discharge monitoring and safety improvement can be achieved.

Description

Technical Field

[0001] The utility model particularly relates to a pulse igniter high-voltage discharge monitoring device. Background Art

[0002] Pulse ignition is an essential technology and device for gas appliances. However, the effectiveness and reliability of this device are directly related to the core safety performance of gas appliances, namely, ensuring reliable ignition of gas to ensure normal combustion and operation of the appliance, and preventing gas leaks caused by ignition anomalies, which could lead to accidents such as gas explosions.

[0003] Currently, effective monitoring and detection methods for pulse ignition in gas appliances are lacking. This is primarily due to the fact that pulse ignition in gas appliances generates an extremely high voltage (approximately 15kV). Few components in the direct circuit sampling circuit can withstand this high voltage and thus suffer breakdown and damage. Consequently, pulse ignition monitoring is largely unimplemented in existing gas appliance technology, relying primarily on the reliability and quality of the pulse ignition device itself to ensure its effectiveness. However, various reasons can lead to discharges in locations other than the ignition pin, particularly on the circuit board or elsewhere in the appliance casing due to high-voltage wire detachment or damage, posing a significant safety hazard. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, one purpose of the present invention is to provide a pulse igniter high-voltage discharge monitoring device that can monitor discharge and improve safety.

[0005] According to the utility model, a pulse igniter high-voltage discharge monitoring device includes a high-voltage discharge needle IG, an inductor L1 is provided on the wire of the high-voltage discharge needle IG, the A end of the inductor L1 is connected to a first rectifier diode D1, the B end of the inductor L1 is connected to a first resistor R1, and includes a second rectifier diode D2, a first capacitor C1, a second resistor R2, a third resistor R3 and a third diode D3, the second rectifier diode D2, the first capacitor C1 and the second resistor R2 are connected in parallel, the output end of the first rectifier diode D1 is connected to the second rectifier diode D2, the first capacitor C1 and the third One side common end of the two resistors R2, the output end of the first resistor R1 is connected to the second rectifier diode D2, the first capacitor C1 and the other side common end of the second resistor R2, one end of the second resistor R2 is connected to the ground terminal GND, the other end of the second resistor R2 is respectively connected to the third diode D3 and the signal output port IG-TEST, the other end of the third diode D3 is connected to the power supply terminal VCC, the high-voltage discharge needle IG is also connected to the pulse igniter, the pulse igniter is also connected to the control board, the control board is also connected to the relay switch JD, and one end of the relay switch JD is connected to the AC power supply VS.

[0006] Specifically, the high-voltage discharge needle IG is further provided with an inductive coupling magnetic ring, and the inductive coil L1 is wound around the inductive coupling magnetic ring.

[0007] Specifically, the inductor L1 is wound around the wire of the high-voltage discharge needle IG.

[0008] Specifically, the second resistor R2 is connected to the signal output port IG-TEST via a third resistor R3.

[0009] Specifically, the control panel is connected to an electromagnetic valve.

[0010] The beneficial effect of the present utility model is that the present circuit detects the voltage value of the high-voltage discharge needle IG through the inductor coil L1, and the voltage value is fed back to the control board through the signal detection port IG-TEST. The control board controls the working state of the relay switch JD at any time, so that the pulse igniter and the electromagnetic valve are in the disconnected state until the fault is eliminated, which has the advantage of improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings.

[0012] Figure 1 It is a circuit diagram of the present utility model.

[0013] Figure 2 The utility model is a circuit diagram of an inductive coupling magnetic ring, an inductive coil and an ignition needle.

[0014] Figure 3 yes Figure 2 Schematic diagram of the second embodiment.

[0015] Figure 4 This is a schematic diagram of the connection between the relay switch JD, the control board, the signal output port IG-TEST and the electromagnetic valve.

[0016] The markings shown in the figure are as follows:

[0017] Pulse igniter 100 , control board 200 , inductively coupled magnetic ring 300 , solenoid valve 400 . DETAILED DESCRIPTION

[0018] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0019] Reference below Figures 1 to 4 A pulse igniter high-voltage discharge monitoring device according to an embodiment of the present utility model is described, including a high-voltage discharge needle IG, an inductor L1 is provided on the wire of the high-voltage discharge needle IG, the A end of the inductor L1 is connected to a first rectifier diode D1, the B end of the inductor L1 is connected to a first resistor R1, including a second rectifier diode D2, a first capacitor C1, a second resistor R2, a third resistor R3 and a third diode D3, the second rectifier diode D2, the first capacitor C1 and the second resistor R2 are connected in parallel, the output end of the first rectifier diode D1 is connected to a common end on one side of the second rectifier diode D2, the first capacitor C1 and the second resistor R2, the output end of the first resistor R1 is connected to the other common end of the second rectifier diode D2, the first capacitor C1 and the second resistor R2, one end of the second resistor R2 is connected to the ground end GND, the other end of the second resistor R2 is respectively connected to the third diode D3 and the signal output port IG-TEST, and the other end of the third diode D3 is connected to the power supply end VCC. The high-voltage discharge needle IG is also connected to a pulse igniter 100, which is in turn connected to a control board 200. The control board 200 is also connected to a relay switch JD, one end of which is connected to an AC power supply VS. In this circuit, the second resistor R2 is connected to the signal output port IG-TEST via a third resistor R3. The control board 200 is also connected to a solenoid valve 400.

[0020] The pulse igniter 100 outputs a high voltage of 15kV to both ends of the high-voltage discharge needle IG and generates a discharge spark between the two poles of the high-voltage discharge needle IG. Under the coupling effect of the inductive coupling magnetic ring 300, the discharge current generates an induced electromotive force at both ends A and B of the inductive coupling magnetic ring 300. This induced electromotive force is a peak pulse voltage. Regardless of whether it is positive or negative, the peak pulse voltage is full-wave rectified by the first rectifier diode D1 and the second rectifier diode D2, and then quickly charges the first capacitor C1 after current limiting by the first resistor R1. A stable DC voltage is quickly established across the first capacitor C1. Due to the reverse clamping effect of the third diode D3, the voltage across the first capacitor C1 can reach a maximum DC voltage of Vcc. Therefore, under normal operation of the pulse igniter 100, the signal detection port IG-TEST can detect a stable voltage Vcc, which is also the system high level.

[0021] When the control board 200 opens the relay switch JD according to the pulse ignition command, if the pulse igniter 100 does not work or works abnormally, the inductive coupling magnetic ring L1 cannot sense the discharge current, so no induced electromotive force is generated at the A and B ends of the inductor coil L1, and therefore the first capacitor C1 cannot be charged. The voltage across the first capacitor C1 is zero, so the voltage at the signal output port IG-TEST is also zero, that is, it is at a low level.

[0022] When the signal detection port IG-TEST is at a level, and the voltage is lower than the voltage preset by the control board, but the signal detection port IG-TEST is at a low level, it can be determined that the pulse igniter 100 has an ignition fault. The control board 200 immediately closes the electromagnetic gas valve 400. At the same time, the control board 200 disconnects the relay switch JD, and the pulse igniter 100 is in a power-off state until the fault is eliminated. This can prevent the safety hazard of gas leakage and deflagration or even explosion of the gas appliance caused by the high-voltage discharge failure of the pulse igniter 100.

[0023] Among them, the third diode D3 is a clamping diode, and the first capacitor C1 is an electrolytic capacitor. In addition, an inductive coupling magnetic ring 300 is also provided on the high-voltage discharge needle IG, and the inductive coil L1 is wound around the inductive coupling magnetic ring 300. Or the inductive coil L1 described in this circuit is wound around the wire of the high-voltage discharge needle IG. When a high-voltage discharge current normally flows through the high-voltage ignition wire to the ignition needle to generate a discharge spark, a certain induced current will be generated on the inductive coupling magnetic ring 300 or the inductive wire L1. After rectification and current limiting, the induced current can charge the capacitor, and during the ignition period, a relatively stable high level is formed on the capacitor. As long as it is detected that this level does not match the preset voltage value of the control board 200, it can be determined that the pulse ignition function is normal, otherwise it is abnormal.

[0024] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pulse igniter high-voltage discharge monitoring device, comprising a high-voltage discharge needle IG, characterized in that: An inductor L1 is provided on the wire of the high-voltage discharge needle IG. The A end of the inductor L1 is connected to a first rectifier diode D1. The B end of the inductor L1 is connected to a first resistor R1. The inductor L1 includes a second rectifier diode D2, a first capacitor C1, a second resistor R2, a third resistor R3 and a third diode D3. The second rectifier diode D2, the first capacitor C1 and the second resistor R2 are connected in parallel. The output end of the first rectifier diode D1 is connected to a common end on one side of the second rectifier diode D2, the first capacitor C1 and the second resistor R2. The output end of the first resistor R1 is connected to the second rectifier diode D2. The rectifier diode D2, the first capacitor C1 and the other side of the second resistor R2 are connected to a common end, one end of the second resistor R2 is connected to the ground terminal GND, the other end of the second resistor R2 is respectively connected to the third diode D3 and the signal output port IG-TEST end, the other end of the third diode D3 is connected to the power supply terminal VCC, the high-voltage discharge needle IG is further connected to the pulse igniter (100), the pulse igniter (100) is further connected to the control board (200), the control board (200) is further connected to the relay switch JD, and one end of the relay switch JD is connected to the AC power supply VS.

2. The pulse igniter high-voltage discharge monitoring device according to claim 1, characterized in that: An inductive coupling magnetic ring (300) is also provided on the conductive wire of the high-voltage discharge needle IG, and the inductive coil L1 is wound around the inductive coupling magnetic ring (300).

3. The pulse igniter high-voltage discharge monitoring device according to claim 1, characterized in that: The inductor L1 is wound around the wire of the high-voltage discharge needle IG.

4. The pulse igniter high-voltage discharge monitoring device according to claim 1, characterized in that: The second resistor R2 is connected to the signal output port IG-TEST via a third resistor R3.

5. The pulse igniter high-voltage discharge monitoring device according to claim 1, characterized in that: The control panel (200) is connected to a solenoid valve (400).

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