CN212362095U - Pulse igniter control system and gas appliance - Google Patents
Pulse igniter control system and gas appliance Download PDFInfo
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- CN212362095U CN212362095U CN202021773426.8U CN202021773426U CN212362095U CN 212362095 U CN212362095 U CN 212362095U CN 202021773426 U CN202021773426 U CN 202021773426U CN 212362095 U CN212362095 U CN 212362095U
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Abstract
The application relates to a pulse igniter control system and a gas appliance, wherein a switch device and a control device are arranged at an output circuit of a pulse igniter, a closed loop is formed among the pulse igniter, the switch device and the control device after the control device controls the switch device to be closed, and the resistance of the closed loop is analyzed. When the resistance value meets the preset resistance threshold range, the output circuit of the pulse igniter is considered to be normal, and the pulse igniter is started to operate at the moment. Through the scheme, the output line of the pulse igniter can be monitored, the situation that local high temperature, other parts are damaged and even fire disasters are caused due to abnormal ignition of the output line is avoided, and the use safety of the pulse igniter is effectively improved.
Description
Technical Field
The application relates to the technical field of household appliances, in particular to a pulse igniter control system and a gas appliance.
Background
The pulse igniter, pulse igniter for short, is an electronic product which utilizes pulse principle to produce continuous instantaneous electric spark to ignite flame of gas appliance. The pulse igniter is widely applied to various gas appliances, such as a gas wall-mounted furnace, a gas water heater, a gas stove and the like.
When the pulse igniter is used and the output end circuit is dropped or disconnected, if the pulse igniter is continuously supplied with power to operate, electric sparks can be caused to appear at an off-design position, local high temperature is easily caused, explosion or other parts can be damaged, and even safety accidents such as fire disasters can be caused. Therefore, the conventional pulse igniter has a disadvantage of poor safety in use.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a pulse igniter control system and a gas appliance for solving the problem of poor safety performance of a conventional pulse igniter, and the pulse igniter control system and the gas appliance can detect the state of an output line of the pulse igniter, prevent the pulse igniter from being powered even when the output line is abnormal, and thus effectively improve the safety of the pulse igniter.
The utility model provides a pulse igniter control system, includes controlling means, switching device and pulse igniter, the output line of pulse igniter connects the first end of switching device, the second end of switching device is connected controlling means, controlling means connects the input of pulse igniter, the control end of switching device connects controlling means, controlling means is used for controlling the switching device closure when receiving the start instruction, and is in controlling means the switching device with when the resistance value of the return circuit that the pulse igniter constitutes satisfies and predetermines resistance threshold range, control the operation is opened to the pulse igniter.
In one embodiment, the switching device is an electromagnetic relay.
In one embodiment, the pulse igniter control system further comprises an information prompting device, and the information prompting device is connected with the control device.
In one embodiment, the information prompting device is an audible alarm.
In one embodiment, the information prompting device is an indicator light alarm.
In one embodiment, the control device comprises a controller and a current detector, the second end of the switching device is connected with the controller through the current detector, the controller is connected with the control end of the switching device, and the controller is connected with the output end of the pulse igniter.
In one embodiment, the controller is a micro-control unit.
In one embodiment, the controller is a digital signal processor.
A gas appliance comprises the pulse igniter control system.
In one embodiment, the gas appliance is a gas wall-hanging stove, a gas water heater, or a gas range.
According to the pulse igniter control system and the gas appliance, the switch device and the control device are arranged at the output circuit of the pulse igniter, the control device controls the switch device to be closed, then a closed loop is formed among the pulse igniter, the switch device and the control device, and the resistance of the closed loop is analyzed. When the resistance value meets the preset resistance threshold range, the output circuit of the pulse igniter is considered to be normal, and the pulse igniter is started to operate at the moment. Through the scheme, the output line of the pulse igniter can be monitored, the situation that local high temperature, other parts are damaged and even fire disasters are caused due to abnormal ignition of the output line is avoided, and the use safety of the pulse igniter is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an exemplary embodiment of a control system for a pulse igniter;
fig. 2 is a schematic structural diagram of a control system of a pulse igniter in another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a pulse igniter control system includes a control device 10, a switching device 20 and a pulse igniter 30, an output line of the pulse igniter 30 is connected to a first end of the switching device 20, a second end of the switching device 20 is connected to the control device 10, the control device 10 is connected to an input end of the pulse igniter 30, a control end of the switching device 20 is connected to the control device 10, and the control device 10 is configured to control the switching device 20 to be closed when receiving a start instruction, and control the pulse igniter 30 to be started to operate when a resistance value of a loop formed by the control device 10, the switching device 20 and the pulse igniter 30 satisfies a preset resistance threshold range.
Specifically, when receiving the start instruction, the controller controls the switching device 20 provided between the output line of the pulse igniter 30 and the control device 10 to close, so that a closed loop is formed among the pulse igniter 30, the switching device 20 and the control device 10. The control device 10 firstly sends a signal to the control terminal of the switching device 20, so that the switching device 20 is closed, the first terminal and the second terminal of the switching device 20 are conducted, and a signal output by the output line of the pulse igniter 30 can be transmitted to the control device 10 through the switching device 20, at this time, a closed loop is formed between the output line of the pulse igniter 30, the first terminal of the switching device 20, the second terminal of the switching device 20, and the input terminal of the pulse igniter 30.
It should be noted that the type of activation command is not exclusive, as long as the switching device 20 is controlled to close under the command. For example, in one embodiment, the activation instruction may be an instruction sent by a user to the control device 10 for activating the control device 10. Further, in one embodiment, the pulse igniter 30 is applied to a gas appliance, and the corresponding start instruction may be an instruction sent by a user to start the gas appliance.
It will be appreciated that the type of control device 10 is not exclusive and in one embodiment the control device 10 includes a power source and a controller, the power source being connected to the controller, the controller being connected to the control terminal of the switching device 20 and the controller being connected to the input terminal of the pulse initiator 30. The controller, the pulse igniter 30, the control terminal of the switching device 20, etc. can be powered by the power supply, and the pulse igniter control operation provided by the embodiment is implemented by the relevant control logic in the controller.
The preset resistance threshold range represents a normal range value of the loop resistance formed by the pulse igniter 30, the switching device 20 and the control device 10 when the output line of the pulse igniter 30 is not detached. It is understood that the magnitude of the preset resistance threshold is not unique for different types of pulse igniters 30, and the specific preset resistance threshold range can be determined by a user in combination with the type of pulse igniter 30 under actual conditions. After the control device 10 controls the switching devices 20 to close so as to form a closed loop between the devices, the closed loop is analyzed, and the magnitude relation between the equivalent total resistance value of the closed loop (i.e. the resistance value of the closed loop) and the preset resistance threshold range is compared, so as to determine whether the output line of the pulse igniter 30 is normal.
When the resistance value is compared and analyzed with the preset resistance threshold range, a situation that the resistance value is within the preset resistance threshold range may occur, which means that the resistance value of the closed circuit is within the normal resistance range, the output line of the pulse igniter 30 is also normal, and the dropping-off does not occur. Therefore, when the control device 10 detects that the resistance value is within the preset resistance threshold range, the pulse igniter 30 is directly controlled to start operation, and the ignition operation is realized.
It should be noted that, in one embodiment, when the control device 10 detects that the resistance value is within the preset resistance threshold value, the pulse igniter 30 is controlled to be powered on for ignition operation, and the switching device 20 is also controlled to be opened, that is, the closed loop among the pulse igniter 30, the switching device 20 and the control device 10 is opened, so as to ensure the reliable operation of the pulse igniter 30.
In one embodiment, when the control device 10 obtains the resistance value of the closed circuit and compares the resistance value with the preset resistance threshold range for analysis, a situation that the resistance value is not within the preset resistance threshold range may also occur, which means that the resistance value of the closed circuit is abnormal, generally due to a fault occurring in the output line of the pulse igniter 30. Whether the output lines of the pulse igniter 30 are disconnected or the output lines of the pulse igniter 30 are short-circuited, the resistance value is detected not to be within the preset resistance threshold value range in the state that the switching device 20 is closed. In this case, if the pulse igniter 30 is continuously controlled to perform the ignition operation, the ignition may not be performed at the designed position, and a local high temperature, damage to other parts, and fire may be easily caused, so that the ignition operation of the pulse igniter 30 may be interrupted in this case.
Referring to fig. 2, in one embodiment, the pulse igniter control system further includes an information prompting device 40, and the information prompting device 40 is connected to the control device 10.
Specifically, in this embodiment, when the resistance value does not satisfy the preset resistance threshold range, that is, the resistance value is outside the preset resistance threshold range, the control device 10 not only interrupts the ignition operation of the pulse igniter 30, but also outputs the fault notification information to notify the user through the information notification device 40 connected thereto, so that the user can check the fault in time and take corresponding measures to solve the fault.
It will be appreciated that the type of the information prompt device 40 is not exclusive and may specifically be an alarm device in the form of sound, light, display screen, etc., for example, in one embodiment, the information prompt device 40 is an audible alarm, and when the control device 10 detects that the resistance value does not satisfy the preset resistance threshold range, the control device 10 controls the audible alarm to generate an audible alarm to prompt the user. In another embodiment, the message prompting device 40 is an indicator light alarm. When the control device 10 detects that the resistance value does not satisfy the preset resistance threshold range, the control device 10 controls the indicator light alarm to emit light to prompt the user.
In one embodiment, the controller outputs a fault notification message that the output line of the pulse igniter 30 is shorted when the resistance value is less than the minimum value of the preset resistance threshold range. The two output lines of the pulse igniter 30 are connected to the first end of the switching device 20, respectively, and if the two output lines of the pulse igniter 30 are short-circuited, the current value flowing into the control device 10 is very large, and under the condition that the loop voltage is not changed, the resistance value obtained by analysis will be very small and is far smaller than the minimum value of the preset resistance threshold range. Therefore, when the control device 10 detects that the resistance value is smaller than the minimum value of the preset resistance threshold range, it is determined that the output line is short-circuited, and at this time, the control device 10 outputs a fault prompt message indicating that the output line of the pulse igniter 30 is short-circuited to notify a user.
In one embodiment, the control device 10 outputs a fault notification message that the output line of the pulse igniter 30 is disconnected when the resistance value is greater than the maximum value of the preset resistance threshold range. When the output line of the pulse igniter 30 is disconnected or falls off, and the control device 10 controls the switching device 20 to be closed, an effective closed loop cannot be formed among the pulse igniter 30, the output line and the control device 10, at this time, the current in the circuit will be very small, and under the condition that the voltage of the whole loop is constant, the analyzed resistance value is very large and is far larger than the maximum value of the preset resistance threshold range. Therefore, when the control device 10 detects that the resistance value is larger than the maximum value of the preset resistance threshold range, the control device 10 will output a fault prompt message indicating that the output line of the pulse igniter 30 is disconnected to inform the user.
In one embodiment, the control device 10 includes a controller and a current detector, the second terminal of the switching device 20 is connected to the controller through the current detector, the controller is connected to the control terminal of the switching device 20, and the controller is connected to the output terminal of the pulse igniter 30.
Specifically, since the pulse igniter 30, the control device 10 and the switching device 20 can be equivalently connected in series after the control device 10 controls the switching device 20 to be closed so as to form a closed loop among the devices, the current values flowing through the devices are the same, and the voltage connected to the closed loop is fixed. Therefore, the present embodiment obtains the voltage and current values of the closed loop, and then calculates the resistance value based on the ohm theorem. After the control device 10 controls the switching device 20 to be closed, the current collector of the control device 10 can collect the current value flowing in the closed loop, so as to obtain the loop current value. In another embodiment, a current collector may be separately disposed in a closed loop formed between the control device 10, the pulse igniter 30 and the switching device 20, and the current collector is connected to the control device 10, and when the control device 10 controls the switching device 20 to be closed, the current collector can send a collected current value to the control device 10.
It is understood that the voltage value of the closed loop can be set in the control device 10 in a preset form, or a voltage collector can be set in a manner similar to the current collector, so as to realize the voltage collecting operation of the closed loop. The control device 10 obtains the voltage value and the current value of the closed circuit, and then obtains the resistance value of the closed circuit according to the value R ═ U/I.
Further, the type of controller is not exclusive, and in one embodiment, the controller is an MCU (micro controller Unit). The MCU is also called a Single Chip Microcomputer (MCU) or a Single Chip Microcomputer (MCU), which properly reduces the frequency and specification of a Central Processing Unit (CPU), and integrates peripheral interfaces such as a memory (memory), a counter (Timer), a USB, an a/D converter, a UART, a PLC, a DMA, etc., and even an LCD driving circuit on a Single Chip to form a Chip-level computer, which is controlled in different combinations for different applications. The MCU realizes the control operation of the switch and the pulse igniter 30, and has the advantages of easy realization and simple control. It is understood that in other embodiments, the controller may also be implemented by a DSP (Digital Signal processing) chip or the like.
In one embodiment, the switching device 20 is an electromagnetic relay.
Specifically, the electromagnetic relay has four stationary contacts, wherein a first stationary contact and a second stationary contact, which are first ends of the switching device 20, are respectively connected to two output lines (31 and 32 shown in fig. 1) of the pulse igniter 30; and the third stationary contact and the fourth stationary contact, which are second terminals of the switching device 20, are connected to the control apparatus 10, respectively, and the coil of the electromagnetic relay is connected to the control apparatus 10. When the control device 10 is powered on the electromagnetic relay to enable the coil to generate a magnetic field, the internal magnet of the electromagnetic relay is attracted, the first stationary contact and the second stationary contact are respectively communicated with the third stationary contact and the fourth stationary contact, a signal input by the first end of the control device 10 can be output through the second end, namely the switch device 20 is closed, and a loop is formed between each device.
When the control device 10 detects that the resistance value is within the preset resistance threshold range, the control device 10 will stop the power-on operation of the coil of the electromagnetic relay, at which time the magnetic field of the coil disappears, and under the action of the elastic force of the coil, the magnet of the electromagnetic relay moves in the opposite direction, so that the path between the first end and the second end of the switching device 20 is disconnected. It should be noted that in one embodiment, the contact distance of the electromagnetic relay is greater than the creepage distance of the pulse igniter 30, thereby ensuring that the pulse igniter 30 does not strike the destruction control device 10 between the contacts of the electromagnetic relay when discharging. The contact distance of the electromagnetic relay is the distance between the movable contact and the fixed contact of the electromagnetic relay under the state that the coil of the electromagnetic relay is not electrified, the movable contact of the electromagnetic relay is the part of the magnet contacted with each fixed contact when the electromagnetic relay is electrified, and similarly, the number of the movable contacts is four.
In the pulse igniter control system, the switching device 20 and the control device 10 are arranged at the output line of the pulse igniter 30, and after the control device 10 controls the switching device to be closed, a closed loop is formed among the pulse igniter 30, the switching device 20 and the control device 10, and the resistance of the closed loop is analyzed. When the resistance value meets the preset resistance threshold range, the output line of the pulse igniter 30 is considered to be normal, and the pulse igniter 30 is started to operate. Through the scheme, the output line of the pulse igniter 30 can be monitored, the conditions that local high temperature, other parts are damaged and even fire disasters are caused due to abnormal ignition of the output line are avoided, and the use safety of the pulse igniter 30 is effectively improved.
A gas appliance comprises the pulse igniter control system.
Referring to fig. 1, a switching device 20 and a control device 10 are further disposed at an output line of the pulse igniter 30, wherein the output line of the pulse igniter 30 is connected to a first end of the switching device 20, a second end of the switching device 20 is connected to the control device 10, the control device 10 is connected to an input end of the pulse igniter 30, and a control end of the switching device 20 is also connected to the control device 10. When the control device 10 receives a start instruction sent by a user, the control device 10 starts to operate. The control device 10 firstly sends a signal to the control terminal of the switching device 20, so that the switching device 20 is closed, the first terminal and the second terminal of the switching device 20 are conducted, and a signal output by the output line of the pulse igniter 30 can be transmitted to the control device 10 through the switching device 20, at this time, a closed loop is formed among the pulse igniter 30, the switching device 20 and the control device 10.
Specifically, the pulse igniter 30 has two output lines, each having an ignition pin connected to an end thereof, and a line for connection to the first end of the switching device 20 is led out at a middle portion of each output line, i.e., a portion between the pulse igniter body and the ignition pin. In the case of a normal output line, the position at which the ignition needle ignites is determined, i.e. the ignition operation is carried out at the design position. When the output line is dropped or disconnected, the ignition position will be changed, namely, the ignition is carried out at the non-design position. Therefore, in this embodiment, the state of the output line is detected by monitoring the change in the circuit resistance, and it is determined whether the pulse igniter 30 needs to perform the ignition operation.
It should be noted that the type of activation command is not exclusive, as long as the switching device 20 is controlled to close under the command. For example, in one embodiment, the activation instruction may be an instruction sent by a user to the control device 10 for activating the control device 10. Further, in one embodiment, the pulse igniter 30 is applied to a gas appliance, and the corresponding start instruction may be an instruction sent by a user to start the gas appliance.
The preset resistance threshold range represents a normal range value of the loop resistance formed by the pulse igniter 30, the switching device 20 and the control device 10 when the output line of the pulse igniter 30 is not detached. It is understood that the magnitude of the preset resistance threshold is not unique for different types of pulse igniters 30, and the specific preset resistance threshold range can be determined by a user in combination with the type of pulse igniter 30 under actual conditions. After the control device 10 controls the switching devices 20 to close so as to form a closed loop between the devices, the closed loop is analyzed, and the magnitude relation between the equivalent total resistance value of the closed loop (i.e. the resistance value of the closed loop) and the preset resistance threshold range is compared, so as to determine whether the output line of the pulse igniter 30 is normal.
When the resistance value is compared and analyzed with the preset resistance threshold range, a situation that the resistance value is within the preset resistance threshold range may occur, which means that the resistance value of the closed circuit is within the normal resistance range, the output line of the pulse igniter 30 is also normal, and the dropping-off does not occur. Therefore, when the control device 10 detects that the resistance value is within the preset resistance threshold range, the pulse igniter 30 is directly controlled to start operation, and the ignition operation is realized.
When the control device 10 obtains the resistance value of the closed circuit and compares and analyzes the resistance value with the preset resistance threshold range, a situation that the resistance value is not within the preset resistance threshold range may also occur, which means that the resistance value of the closed circuit is abnormal, and is generally caused by a fault occurring in the output line of the pulse igniter 30. Whether the output lines of the pulse igniter 30 are disconnected or the output lines of the pulse igniter 30 are short-circuited, the resistance value is detected not to be within the preset resistance threshold value range in the state that the switching device 20 is closed. In this case, if the pulse igniter 30 is continuously controlled to perform the ignition operation, the ignition may not be performed at the designed position, and a local high temperature, damage to other parts, and fire may be easily caused, so that the ignition operation of the pulse igniter 30 may be interrupted in this case.
Further, in one embodiment, when the resistance value does not satisfy the preset resistance threshold range, that is, the resistance value is outside the preset resistance threshold range, the control device 10 not only interrupts the ignition operation of the pulse igniter 30, but also outputs a fault notification message to inform the user through the information notification device 40 connected thereto, so that the user can check the fault in time and take corresponding measures to solve the fault.
It should be noted that the type of gas appliance is not exclusive, as long as it is a device that performs an ignition operation using the pulse igniter 30, and for example, in one embodiment, the gas appliance is any one of a gas wall-hanging stove, a gas water heater, and a gas range.
In the gas appliance, the switching device 20 and the control device 10 are arranged at the output line of the pulse igniter 30, after the control device 10 controls the switching device to be closed, a closed loop is formed among the pulse igniter 30, the switching device 20 and the control device 10, and by analyzing the resistance of the closed loop, when the resistance value meets a preset resistance threshold range, the output line of the pulse igniter 30 is considered to be normal, and at this time, the pulse igniter 30 is started to operate. Through the scheme, the output line of the pulse igniter 30 can be monitored, the ignition operation is ensured to be carried out at the designed position, the conditions that local high temperature, other parts are damaged and even fire disasters are caused due to the fact that the output line falls off or is disconnected for ignition are avoided, and the use safety of the pulse igniter 30 is effectively improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A pulse igniter control system is characterized by comprising a control device, a switching device and a pulse igniter, wherein an output circuit of the pulse igniter is connected with a first end of the switching device, a second end of the switching device is connected with the control device, the control device is connected with an input end of the pulse igniter, a control end of the switching device is connected with the control device,
the control device is used for controlling the switch device to be closed when receiving a starting instruction, and controlling the pulse igniter to be started and operated when the resistance value of a loop formed by the control device, the switch device and the pulse igniter meets a preset resistance threshold range.
2. The pulse igniter control system of claim 1, wherein the switching device is an electromagnetic relay.
3. The pulse igniter control system of claim 1 further comprising an information presentation device, the information presentation device being coupled to the control device.
4. The pulse igniter control system of claim 3 wherein the information prompt device is an audible alarm.
5. The pulse igniter control system of claim 3 wherein the information prompt device is an indicator light alarm.
6. The pulse igniter control system of claim 1, wherein the control device comprises a controller and a current detector, the second terminal of the switching device is connected to the controller through the current detector, the controller is connected to the control terminal of the switching device, and the controller is connected to the output terminal of the pulse igniter.
7. The pulse igniter control system of claim 6 wherein the controller is a micro control unit.
8. The pulse igniter control system of claim 6 wherein the controller is a digital signal processor.
9. A gas appliance comprising a pulse igniter control system of any one of claims 1 through 8.
10. The gas appliance of claim 9, wherein the gas appliance is a gas wall-mounted stove, a gas water heater, or a gas range.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021773426.8U CN212362095U (en) | 2020-08-24 | 2020-08-24 | Pulse igniter control system and gas appliance |
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| CN202021773426.8U CN212362095U (en) | 2020-08-24 | 2020-08-24 | Pulse igniter control system and gas appliance |
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