CN210463611U - High-voltage ignition control circuit and gas water heater - Google Patents
High-voltage ignition control circuit and gas water heater Download PDFInfo
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- CN210463611U CN210463611U CN201921178693.8U CN201921178693U CN210463611U CN 210463611 U CN210463611 U CN 210463611U CN 201921178693 U CN201921178693 U CN 201921178693U CN 210463611 U CN210463611 U CN 210463611U
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Abstract
The utility model provides a high pressure ignition control circuit and gas heater, this high pressure ignition control circuit includes: the device comprises a PWM (pulse-width modulation) drive control unit, a first transformer, a diode, a discharge tube, an energy storage capacitor and a second transformer; the primary coil of the first transformer is used for connecting a direct-current power supply and the PWM driving control unit; the secondary coil of the first transformer is connected to one end of an energy storage capacitor through the diode, and the other end of the energy storage capacitor is connected with the primary coil of the second transformer; the cathode of the discharge tube is respectively connected with the diode and the energy storage capacitor, and the anode of the discharge tube is connected with the secondary coil of the first transformer and grounded. According to the technical scheme of the utility model, can carry out dynamic adjustment to equipment ignition frequency, not only can reduce the required precision to components and parts like this in batch production, still can improve gas heater's safety in utilization etc..
Description
Technical Field
The utility model relates to a gas heater technical field especially relates to a high pressure ignition control circuit and gas heater.
Background
The high-voltage ignition circuit of the existing gas water heater is usually controlled to be turned on or turned off by directly accessing 220V alternating current and adopting a relay, for example, after the relay is turned on, the high-voltage alternating current is rectified and then charges an energy storage capacitor, and when the charging reaches a certain condition, the high-voltage discharging is started to be carried out on an ignition transformer, so that the aim of breaking down air to realize ignition is fulfilled.
However, in practical applications, after the gas water heater is used for a long time, the performance of internal devices may change, which results in a decrease in ignition frequency, and further, ignition may be successful only after multiple times of ignition, or even ignition may not be successful, and multiple times of ignition may cause some safety problems under certain limit conditions. In addition, because the existing high-voltage ignition circuit cannot adjust the ignition frequency, after-sales personnel usually replace or adjust certain specific devices through door-to-door service, even possibly replace the whole control circuit board for high-voltage ignition, and the like, so that the maintenance time is long, the maintenance cost is high, and the like.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to overcome one or more of the above problems, and to provide a high voltage ignition control circuit and a gas water heater, in which a transformer is added and controlled by a PWM signal, so as to dynamically adjust the ignition frequency, and improve the safety of the gas water heater.
The utility model provides a high pressure ignition control circuit, include: the device comprises a PWM (pulse-width modulation) drive control unit, a first transformer, a diode, a discharge tube, an energy storage capacitor and a second transformer;
one end of a primary coil of the first transformer is used for connecting a direct-current power supply, and the other end of the primary coil of the first transformer is connected with the PWM driving control unit;
one end of a secondary coil of the first transformer is connected to one end of the energy storage capacitor through the diode, and the other end of the energy storage capacitor is connected with a primary coil of the second transformer;
the cathode of the discharge tube is respectively connected with one end of the energy storage capacitor and the diode, and the anode of the discharge tube is connected with the other end of the secondary coil of the first transformer and grounded;
and the secondary coil of the second transformer is used for being connected with an igniter of the gas water heater.
Further, in the above-mentioned high-voltage ignition control circuit, the ignition control circuit further includes: the wireless communication module is connected with the PWM driving control unit;
the wireless communication module is used for receiving a PWM signal duty ratio adjusting instruction sent by a remote control terminal so that the PWM driving control unit adjusts the duty ratio of the output PWM signal according to the PWM signal duty ratio adjusting instruction.
Further, in the above-mentioned high-voltage ignition control circuit, the ignition control circuit further includes: and one end of the resistor is respectively connected with the one end of the energy storage capacitor and the negative electrode of the discharge tube, and the other end of the resistor is grounded.
Further, in the above-mentioned high-voltage ignition control circuit, the ignition control circuit further includes: and the direct current power supply is connected with one end of the primary coil of the first transformer and is also used for connecting the PWM driving control unit to provide required working voltage.
Further, in the above-mentioned high-voltage ignition control circuit, the ignition control circuit further includes: an igniter connected to the secondary coil of the second transformer.
Further, in the above high-voltage ignition control circuit, the PWM driving control unit includes a PWM controller and a switching tube, the PWM controller is connected to the switching tube, and the switching tube is connected to the other end of the primary coil of the first transformer.
Further, in the above-mentioned high-voltage ignition control circuit, the switching tube is a thyristor, a triode, an MOS tube or an IGBT tube.
Further, in the above high voltage ignition control circuit, the discharge tube is a semiconductor discharge tube, a gas discharge tube, a ceramic gas discharge tube or a glass discharge tube.
Further, in the above high-voltage ignition control circuit, the energy storage capacitor is a high-voltage resistant high-power electrolytic capacitor.
The utility model also provides a gas water heater, gas water heater includes foretell high pressure ignition control circuit.
The utility model discloses a high pressure ignition control circuit can carry out dynamic adjustment to the ignition frequency through increasing a transformer and through this transformer of PWM drive control unit control, not only can reduce the required precision to components and parts in batch production, still can improve gas heater's safety in utilization etc.. In addition, resistors can be connected in parallel at two ends of the discharge tube to discharge high voltage in the energy storage capacitor when ignition is stopped, so that safety is guaranteed; if the wireless communication module is arranged, the maintenance of the on-line equipment is facilitated, such as remote ignition frequency adjustment, and the service and maintenance cost can be greatly reduced.
In order to make the aforementioned and other objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 shows a schematic structural diagram of a high-voltage ignition control circuit according to an embodiment of the present invention;
fig. 2 shows a schematic structural diagram of a PWM driving control unit of the high-voltage ignition control circuit according to the embodiment of the present invention;
fig. 3 shows a test waveform diagram of a high voltage ignition control circuit of an embodiment of the present invention;
fig. 4 shows another schematic structural diagram of the high-voltage ignition control circuit according to the embodiment of the present invention.
Description of the main element symbols:
1-a high voltage ignition control circuit; t1 — first transformer; 10-a PWM drive control unit; 101-a PWM controller; 102-a switching tube; d1-diode; d2-discharge tube; c1-energy storage capacitor; t2 — second transformer; 20-an igniter; r1-resistance; 30-wireless communication module.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the templates herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1, the present embodiment provides a high-voltage ignition control circuit 1, which can be applied to a gas water heater device, and the ignition frequency of the high-voltage ignition control circuit 1 can be dynamically adjusted, so that the gas water heater can be safely ignited at high voltage, and is convenient for remote maintenance. The high-voltage ignition control circuit 1 will be described in detail below.
Exemplarily, as shown in fig. 1, the high voltage ignition control circuit 1 includes a PWM drive control unit 10 (PWM), a first transformer T1, a diode D1, a discharge tube D2, an energy storage capacitor C1, and a second transformer T2. Wherein, the primary coil of the first transformer T1 is used for connecting the dc power supply and the PWM driving control unit 10; one end of the secondary winding of the first transformer T1 is connected to one end of a storage capacitor C1 through a diode D1, and the other end of the storage capacitor C1 is connected to the primary winding of the second transformer T2. The cathode of the discharge tube D2 is connected to the one end of the energy storage capacitor C1 and the diode D1, and the anode thereof is connected to the other end of the secondary winding of the first transformer T1 and grounded; the secondary winding of the second transformer T2 is used to connect the igniter 20 for high voltage ignition. Optionally, the high voltage ignition control circuit 1 further comprises an igniter 20, and the igniter 20 is connected to the secondary coil of the second transformer T2.
In this embodiment, the first transformer T1 mainly functions as a boost, and as shown in fig. 1, one end of the primary winding of the first transformer T1 is connected to a dc power supply for supplying energy, and the other end is connected to the PWM driving control unit 10. The PWM driving control unit 10 is mainly used to output a PWM signal to drive the primary winding of the first transformer T1, so that a high voltage ac power is generated at the secondary winding of the first transformer T1. Then, the high-voltage alternating current is rectified by the diode D1, and then the energy storage capacitor C1 is charged.
Exemplarily, as shown in fig. 2, the PWM drive control unit 10 includes a PWM controller 101 and a switching tube 102. The PWM controller 101 is connected to a switching tube 102, and the switching tube 102 is connected to the other end of the primary winding of the first transformer T1. For example, the PWM controller 101 may be an MCU controller in a gas water heater, and in consideration of the fact that the driving force of the PWM signal output from the IO pin of some MCU controllers may be insufficient, a corresponding driving circuit, such as a bootstrap circuit or a push-pull circuit formed by a triode, may be added between the MCU controller and the switching tube 102, so as to implement driving control of the primary coil of the first transformer T1. Of course, the PWM controller 101 may also adopt a dedicated PWM control chip such as UC3842 or UC3843, and output a PWM signal with a certain duty ratio to control the on/off state of the switching tube 102, so as to drive the primary coil of the first transformer T1.
The switch tube 102 may be a transistor with a switch controllable characteristic, such as a thyristor, a triode, an insulated gate field effect transistor (i.e., MOS transistor), or an insulated gate bipolar transistor (i.e., IGBT). The MOS tube is divided into an N-channel MOS tube and a P-channel MOS tube. For example, if an N-channel MOS transistor is used, the gate of the switching transistor 102 may be connected to the PWM controller 101, the drain thereof may be connected to one end of the primary winding of the first transformer T1, and the source thereof may be grounded.
Considering that the high voltage generated at the moment of ignition is usually up to 10000V or more, in this embodiment, the energy storage capacitor C1 is a high-power electrolytic capacitor with a high voltage-resistant value, so that when the high voltage for breaking down air is generated, the phenomenon of damage caused by the low voltage-resistant of the energy storage capacitor C1 can be avoided.
In this embodiment, the PWM controller 101 adjusts the charging speed of the energy storage capacitor C1 by adjusting the duty ratio of the PWM signal for controlling the switching tube 102, so as to adjust the ignition frequency. Exemplarily, when the switching tube 102 is turned on, the secondary winding of the first transformer T1 senses a high voltage, and the high voltage is rectified and then transmitted to the energy storage capacitor C1 for charging, and when the switching tube 102 is turned off, the charging is stopped, that is, the longer the on-time of the switching tube 102 is, the more the charging electric quantity is, so that the charging speed of the energy storage capacitor C1 can be increased by increasing the duty ratio of the PWM signal, and the ignition frequency can be further increased.
In this embodiment, the discharge tube D2 is reversely disposed at both ends of the secondary coil of the first transformer T1. Specifically, as shown in fig. 1, the cathode of the discharge tube D2 is connected to both the diode D1 and the storage capacitor C1, and the anode thereof is connected to the ground of the secondary winding of the first transformer T1. The discharge tube D2 may illustratively include, but is not limited to, a semiconductor discharge tube, a gas discharge tube, a ceramic gas discharge tube, or a glass discharge tube, among others.
Since the discharge tube D2 is in a high resistance state when it is not broken down, and after reaching its breakdown voltage or threshold voltage, the discharge tube D2 is in a short circuit state, and current in the loop can be quickly released. It can be understood that when the charging voltage of the energy storage capacitor C1 reaches the discharging threshold, i.e. threshold voltage, of the discharge tube D2, the discharge tube D2 will be short-circuited and start discharging, so that the primary coil of the second transformer T2 generates a momentary high voltage, and accordingly, the secondary coil of the second transformer T2 will induce a larger high voltage to break down air, thereby generating a spark for igniting the gas, and finally achieving the purpose of high voltage ignition.
It should be understood that reference to "ground" in the various embodiments herein does not mean connection to actual ground (ground zero potential), but rather denotes connection to a low potential reference terminal of the circuit. For example, if the power supply negative electrode is the low potential reference terminal, the "ground" refers to the power supply negative electrode.
The operation of the high-voltage ignition control circuit 1 will be described in detail below.
Under normal conditions, when ignition is required, the PWM driving control unit 10 can drive the primary coil of the first transformer T1, so that the secondary coil of the first transformer T1 rectifies the generated high voltage and charges the energy storage capacitor C1; when the voltage charged by the energy storage capacitor C1 reaches the threshold voltage of the discharge tube D2, the discharge tube D2 is in a short circuit state, and then the energy storage capacitor C1 starts to discharge through the discharge tube D2; at this time, a current flows through the primary coil of the second transformer T2, and accordingly, a high voltage sufficient to break down air is induced to the secondary coil of the second transformer T2, and finally, the gas is ignited by the igniter 20.
For example, fig. 3 shows a test waveform for the high-voltage ignition control circuit 1. If the dc power source connected to the primary winding of the first transformer T1 is 5V, as shown in fig. 3, the waveform a is the PWM signal output by the PWM driving control unit 10, and the amplitude is 5V and the duty ratio is 60%, and the waveform b is the ac power output by the secondary winding of the first transformer T1, and the ac power has an amplitude of about 230V, and is rectified by the diode D1 to become dc power to charge the energy storage capacitor C1.
When the ignition needs to be turned off, the PWM driving control unit 10 may turn off the PWM signal, and accordingly, the secondary windings of the first transformer T1 and the second transformer T2 cannot generate high voltage, that is, the ignition turning-off function is realized.
Considering that after the gas water heater is used for a long time, devices in the high-voltage ignition control circuit 1, such as the first transformer T1, the energy storage capacitor C1, etc., may have a slight performance degradation or an operating point deviation, which may result in an ignition failure of the gas water heater or an ignition frequency not meeting the standard. For example, it may happen that the gas water heater needs to be ignited for many times at each time, and the sound of the bombing often appears at the moment of ignition, because the gas in the gas water heater overflows in the machine cavity during each ignition, when the ignition times increase, the concentration of the gas gradually accumulates and reaches a certain high concentration, so that once the ignition is successful, the high-concentration gas meets the open fire and the deflagration phenomenon is generated, which brings a certain potential safety hazard, and at this time, corresponding maintenance is needed.
In this embodiment, the duty ratio of the PWM signal output by the PWM driving control unit 10 is changed to adjust the charging speed of the energy storage capacitor C1, so that the gas water heater can meet the ignition frequency standard requirement. Compared with the existing ignition control circuit which cannot be adjusted, the embodiment realizes the maintenance of the gas water heater by adjusting the duty ratio of the PWM signal and matching the performance of the first transformer T1 and the energy storage capacitor C1, so that the gas water heater reaches the ignition requirement again, the hardware device or even the whole circuit board is not required to be replaced every time, the service life of the high-voltage ignition control circuit 1 can be prolonged, and the maintenance cost and the like are greatly reduced.
As a preferable mode, as shown in fig. 4, the high-voltage ignition control circuit 1 further includes a resistor R1, one end of the resistor R1 is connected to the one end of the storage capacitor C1, the negative electrode of the discharge tube D2 and the diode D1, and the other end is grounded. By connecting the resistor R1 in parallel across the discharge tube D2, excess power in the circuit can be quickly drained. Exemplarily, when the ignition is stopped, the energy storage capacitor C1 may still store the excessive electric quantity, and since the voltage thereof will be smaller than the threshold voltage of the discharge tube D2 and the discharge cannot be performed through the discharge tube D2, the excessive high voltage in the energy storage capacitor C1 can be quickly discharged through the resistor R1, so that the electric shock phenomenon can be prevented, and the safety of the product is improved. In addition, the resistor R1 can also be used to assist in adjusting the ignition frequency of the second transformer T2 by affecting the charging and discharging time of the energy storage capacitor C1. It is to be understood that the number of the resistors R1 is not limited to 1, and in the case of a plurality of resistors, the plurality of resistors may be connected in series or in parallel and then disposed at both ends of the discharge tube D2.
As a preferable mode, the high-voltage ignition control circuit 1 further includes: and a wireless communication module 30, wherein the wireless communication module 30 is connected with the PWM driving control unit 10. Exemplarily, the wireless communication module 30 may include, but is not limited to, a bluetooth module, an infrared module, a WiFi module, a 2G communication module, a 3G communication module, a 4G communication module, or a 5G communication module. It can be understood that the interconnection and intercommunication between the gas water heater equipment and other internet of things equipment, networks, cloud servers and the like can be realized through the wireless communication module 30, so that various requirements of users and business parties can be met.
For example, the wireless communication module 30 may be configured to receive a control command sent from a remote control terminal to enable the PWM driving control unit 10 to perform corresponding control on the gas water heater, such as a command of adjusting a duty ratio of a PWM signal. Of course, the wireless communication module 30 can also be used for uploading the use condition data of the user, such as the use times, the use duration and the like, so that after-sales personnel can conveniently know the use condition of a certain gas water heater and perform maintenance analysis and the like in the required condition. In addition, the gas water heater device is used as an on-line device, and the ignition frequency of the gas water heater device can be remotely adjusted on line through the wireless communication module 30, so that great convenience is provided for product maintenance and the like.
As an alternative, the high-voltage ignition control circuit 1 further includes: a dc power source VCC is connected to the primary winding of the first transformer T1. For example, the dc power VCC may be a detachable battery or a rechargeable battery, such as 3.3V, 4.2V, 5V or 6V, and the detachable battery may be easily replaced. Of course, the dc power supply may be obtained by rectifying and stepping down ac power.
It can be understood that the dc power VCC is used to supply energy to the primary coil of the first transformer T1, and the generation of a high voltage for ignition for breakdown of air is achieved through the boosting process of the first transformer T1 and the second transformer T2. Of course, the dc power VCC may also be used to provide a required operating voltage for other devices such as the PWM driving control unit 10. In addition, because the low-voltage direct-current power supply is adopted, the direct current of the human body can be prevented from contacting the 220V alternating current, and the use is safer for users.
The utility model discloses a high pressure ignition control circuit can carry out dynamic adjustment to the ignition frequency through increasing a transformer and through this transformer of PWM drive control unit, not only can reduce the required precision to components and parts in batch production, and then improves the security etc. that use gas heater. In addition, the ignition frequency is adjusted to replace a device or a control panel which is not damaged but has slightly reduced performance or has deviated working point, so that the service life of the device can be prolonged, the utilization rate of the device is greatly improved, the service and maintenance cost is greatly reduced, and the like. Further, the two ends of the discharge tube can be connected with resistors in parallel, so that high voltage in the energy storage capacitor is released when ignition is stopped, and safety is guaranteed. The wireless communication module is arranged, so that the remote maintenance of after-sales personnel can be conveniently realized, for example, the ignition frequency is remotely adjusted to ensure that the gas water heater safely works again to serve as an after-sales service party, and the labor cost, the time cost and the like required by door-to-door service and the like can be reduced.
Example 2
Referring to fig. 1, the present embodiment provides a gas water heater, which can use the high-voltage ignition control circuit in the above embodiment 1 to realize high-voltage ignition.
Exemplarily, the high voltage ignition control circuit 1 includes a PWM drive control unit 10, a first transformer T1, a diode D1, a discharge tube D2, an energy storage capacitor C1, and a second transformer T2.
The two ends of the primary coil of the first transformer T1 are respectively used for connecting a dc power supply and the PWM driving control unit 10; one end of the secondary winding of the first transformer T1 is connected to one end of a storage capacitor C1 through a diode D1, and the other end of the storage capacitor C1 is connected to the primary winding of the second transformer T2. The cathode of the discharge tube D2 is connected to one end of the diode D1 and one end of the storage capacitor C1, and the anode of the discharge tube D2 is connected to the other end of the secondary winding of the first transformer T1 and grounded. The secondary winding of the second transformer T2 is used to connect the igniter.
It is understood that the high-voltage ignition control circuit 1 in the gas water heater corresponds to the high-voltage ignition control circuit in the above embodiment 1, and the alternatives in the above embodiment 1 are also applicable to this embodiment, so that the details are not described here.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above-described embodiments are merely illustrative of several embodiments of the present invention, which are described in detail and specific, but not intended to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (10)
1. A high-voltage ignition control circuit, comprising: the device comprises a PWM (pulse-width modulation) drive control unit, a first transformer, a diode, a discharge tube, an energy storage capacitor and a second transformer;
one end of a primary coil of the first transformer is used for connecting a direct-current power supply, and the other end of the primary coil of the first transformer is connected with the PWM driving control unit;
one end of a secondary coil of the first transformer is connected to one end of the energy storage capacitor through the diode, and the other end of the energy storage capacitor is connected with a primary coil of the second transformer;
the cathode of the discharge tube is respectively connected with one end of the energy storage capacitor and the diode, and the anode of the discharge tube is connected with the other end of the secondary coil of the first transformer and grounded;
and the secondary coil of the second transformer is used for connecting an igniter.
2. The high-voltage ignition control circuit according to claim 1, further comprising: the wireless communication module is connected with the PWM driving control unit;
the wireless communication module is used for receiving a PWM signal duty ratio adjusting instruction sent by a remote control terminal so that the PWM driving control unit adjusts the duty ratio of the output PWM signal according to the PWM signal duty ratio adjusting instruction.
3. The high-voltage ignition control circuit according to claim 1, further comprising: and one end of the resistor is respectively connected with the one end of the energy storage capacitor and the negative electrode of the discharge tube, and the other end of the resistor is grounded.
4. The high-voltage ignition control circuit according to claim 1, further comprising: and the direct current power supply is connected with one end of the primary coil of the first transformer and is also used for connecting the PWM driving control unit to provide required working voltage.
5. The high-voltage ignition control circuit according to claim 1, further comprising: an igniter connected to the secondary coil of the second transformer.
6. The high-voltage ignition control circuit according to claim 1, wherein the PWM drive control unit includes a PWM controller and a switching tube, the PWM controller is connected to the switching tube, and the switching tube is connected to the other end of the primary coil of the first transformer.
7. The high-voltage ignition control circuit according to claim 6, wherein the switch tube is a thyristor, a triode, a MOS tube or an IGBT tube.
8. The high voltage ignition control circuit of claim 1, wherein the discharge tube is a semiconductor discharge tube, a gas discharge tube, a ceramic gas discharge tube, or a glass discharge tube.
9. The high-voltage ignition control circuit according to claim 1, wherein the energy storage capacitor is a high-voltage resistant high-power electrolytic capacitor.
10. A gas water heater comprising a high voltage ignition control circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921178693.8U CN210463611U (en) | 2019-07-24 | 2019-07-24 | High-voltage ignition control circuit and gas water heater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921178693.8U CN210463611U (en) | 2019-07-24 | 2019-07-24 | High-voltage ignition control circuit and gas water heater |
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| CN210463611U true CN210463611U (en) | 2020-05-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285586A (en) * | 2019-07-24 | 2019-09-27 | 深圳市享往科技有限公司 | High-tension ignition control circuit and gas heater |
| CN115978580A (en) * | 2022-12-08 | 2023-04-18 | 华帝股份有限公司 | Igniter discharging method and device |
-
2019
- 2019-07-24 CN CN201921178693.8U patent/CN210463611U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285586A (en) * | 2019-07-24 | 2019-09-27 | 深圳市享往科技有限公司 | High-tension ignition control circuit and gas heater |
| CN115978580A (en) * | 2022-12-08 | 2023-04-18 | 华帝股份有限公司 | Igniter discharging method and device |
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