Switching circuit and burner control system

Abstract

The utility model discloses a switching circuit and a burner control system, and relates to the field of burner control, in the switching circuit, a third end of a direct current switch module is connected with a first end of a selection switch module, and a common end of the connection is used as a first output end of the switching circuit and is used for being connected with an eighth pin of a burner; the fourth end serves as a fourth output end of the switching circuit and is used for being connected with a twelfth pin of the burner; the second end of the alternating current switch module serves as the second output end of the switching circuit and is used for being connected with a ninth pin of the burner. The third end of the selection switch module serves as the third output end of the switching circuit and is used for being connected with the eleventh pin of the burner. And the tenth pin of the burner is connected with the zero line end of the alternating current power supply. According to the scheme, an operator does not need to distinguish whether the deslagging motor exists or not and pins corresponding to the deslagging motor specifically under the conditions of manufacturers and models of the burners, accurate connection is achieved through the switching circuit, accurate control is facilitated, wiring is simple, and compatibility of the burners of various manufacturers and models is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of burner control technology, and in particular to a switching circuit and burner control system. Background Technology

[0002] Intensive curing barns include heating equipment such as burners. To achieve precise control, a dedicated controller is required. However, current burner standards are relatively generic, resulting in poor compatibility between burners and controllers from different manufacturers, causing significant challenges to production management. Specifically, although different models of burners from various manufacturers all use a 12-pin interface, the functions and order of the pins differ between models. This means that the type of ash removal motor used in burners from different manufacturers or models may differ, such as DC or AC ash removal motors, and the pins related to the ash removal motor may also vary. For reliable control, the corresponding pins of the burner must be accurately connected to the control pins of the controller. The primary method previously involved manual connection. However, due to the wide variety of manufacturers and models of burners, identification was challenging, especially since users of intensive curing chambers are typically middle-aged or elderly. This made it easy for errors to occur during the connection process between the burner and the controller. For instance, the pins corresponding to the ash removal motor might not be accurately identified. For example, if the ash removal motor is a 12V DC motor with the forward control pin being pin 8 and the reverse control pin being pin 12, the operator might misidentify it, such as mistaking the forward control pin for pin 9. In reality, pin 9 is not the forward control pin for the 12V DC ash removal motor. Connecting pin 9 to the controller under these circumstances would result in the inability to achieve the intended control effect or even equipment malfunction.

[0003] Therefore, how to provide a solution for reliably connecting the controller to the burner for control is a problem that urgently needs to be solved. Utility Model Content

[0004] In view of this, the present invention provides a switching circuit and burner control system, which is simple to wire, has low dependence on operator operation, is compatible with burners from various manufacturers and models, and avoids equipment failure caused by manual wiring.

[0005] To solve the above-mentioned technical problems, this application provides a switching circuit applied to a burner control system, wherein the burner control system includes a control module; the switching circuit includes a voice acquisition module, a voltage conversion module, a DC switch module, a selection switch module, and an AC switch module, all of which are connected to the control module.

[0006] The voice acquisition module is used to acquire input voice and send it to the control module, so that the control module can control the DC switch module, the selection switch module and the AC switch module to turn on and off, and control the voltage conversion module to perform voltage conversion according to the input voice.

[0007] The input terminal of the voltage conversion module is connected to the AC power supply, and the output terminal is connected to the first terminal of the DC switching module.

[0008] The second terminal of the DC switch module is grounded, the third terminal is connected to the first terminal of the selector switch module and the common terminal of the connection is used as the first output terminal of the switching circuit for connection to the eighth pin of the burner, and the fourth terminal is used as the fourth output terminal of the switching circuit for connection to the twelfth pin of the burner.

[0009] The first end of the AC switch module is connected to the AC power supply, the second end serves as the second output end of the switching circuit and is used to connect to the ninth pin of the burner, and the third end is connected to the second end of the selection switch module.

[0010] The third terminal of the selection switch module serves as the third output terminal of the switching circuit and is connected to the eleventh pin of the burner; the tenth pin of the burner is connected to the neutral terminal of the AC power supply.

[0011] Furthermore, the voltage conversion module includes a first voltage converter, a second voltage converter, a first switching module, and a second switching module;

[0012] The input terminal of the first voltage converter is connected to an AC power source, and the output terminal is connected to the first input terminal of the first switching module. It is used to convert the AC voltage output by the AC power source to output a first DC voltage corresponding to the working voltage of the slag removal motor in the burner.

[0013] The control terminal of the second switch module is connected to the control module, the input terminal is connected to the AC power supply, and the output terminal is connected to the input terminal of the second voltage converter.

[0014] The output terminal of the second voltage converter is connected to the second input terminal and the control terminal of the first switch module, and is used to convert the AC voltage when the second switch module is turned on, so as to output a second DC voltage corresponding to the working voltage of the slag removal motor.

[0015] The output terminal of the first switching module is connected to the first terminal of the DC switching module.

[0016] Furthermore, the second switch module includes a first controllable switch module and a first electromagnetic switch;

[0017] The first terminal of the first controllable switch is connected to the first terminal of the first coil of the first electromagnetic switch, the second terminal is grounded, and the control terminal is connected to the control module. It is used to turn off when the working voltage of the slag removal motor is the first DC voltage and to turn on when the working voltage is the second DC voltage.

[0018] The second end of the first coil is connected to a DC power supply; the first end of the normally open switch of the first electromagnetic switch is connected to the AC power supply, and the second end is connected to the input terminal of the second voltage converter.

[0019] Furthermore, the first switch module includes a second electromagnetic switch;

[0020] The first end of the second coil of the second electromagnetic switch is connected to the output terminal of the second voltage converter, and the second end is grounded;

[0021] The common contact of the second electromagnetic switch is connected to the first terminal of the DC switch module, the normally closed contact is connected to the output terminal of the first voltage converter, and the normally open contact is connected to the output terminal of the second voltage converter.

[0022] Furthermore, the DC switching module includes a third switching module and a fourth switching module;

[0023] The first terminal of the third switch module is connected to the first terminal of the fourth switch module, and the common terminal of the connection is used as the first terminal of the DC switch module. The second terminal is connected to the second terminal of the fourth switch module, and the common terminal of the connection is used as the second terminal of the DC switch module. The third terminal is used as the third terminal of the DC switch module. The control terminal is connected to the control module.

[0024] The third terminal of the fourth switch module serves as the fourth terminal of the DC switch module, and the control terminal is connected to the control module.

[0025] Furthermore, the third switch module includes a second controllable switch module and a third electromagnetic switch, and the fourth switch module includes a third controllable switch module and a fourth electromagnetic switch;

[0026] The first end of the second controllable switch module is connected to the first end of the third coil in the third electromagnetic switch, the control end serves as the control end of the third switch module, and the second end is grounded;

[0027] The second end of the third coil is connected to a DC power supply; the common contact of the third electromagnetic switch serves as the third end of the third switch module, the normally closed contact serves as the second end of the third switch module, and the normally open contact serves as the first end of the third switch module.

[0028] The first end of the third controllable switch module is connected to the first end of the fourth coil in the fourth electromagnetic switch, the control end serves as the control end of the fourth switch module, and the second end is grounded.

[0029] The second end of the fourth coil is connected to the DC power supply; the common contact of the fourth electromagnetic switch serves as the third end of the fourth switch module, the normally closed contact serves as the second end of the fourth switch module, and the normally open contact serves as the first end of the fourth switch module.

[0030] Furthermore, the AC switch module includes an AC start / stop module and an AC forward / reverse control module;

[0031] The first end of the AC start-stop module serves as the first end of the AC switch module, the second end is connected to the first end of the AC forward and reverse control module, and the control end is connected to the control module.

[0032] The second terminal of the AC forward and reverse control module serves as the second terminal of the AC switch module, the third terminal serves as the third terminal of the AC switch module, and the control terminal is connected to the control module.

[0033] Furthermore, the AC start-stop module includes a fourth controllable switch module and a fifth electromagnetic switch; the AC forward and reverse rotation control module includes a fifth controllable switch module and a sixth electromagnetic switch.

[0034] The first end of the fourth controllable switch module is connected to the first end of the fifth coil in the fifth electromagnetic switch, the control end serves as the control end of the AC start-stop module, and the second end is grounded.

[0035] The second end of the fifth coil is connected to a DC power supply; the first end of the normally open switch of the fifth electromagnetic switch serves as the first end of the AC start-stop module, and the second end serves as the second end of the AC start-stop module.

[0036] The first end of the fifth controllable switch module is connected to the first end of the sixth coil in the sixth electromagnetic switch, the control end serves as the control end of the AC forward and reverse control module, and the second end is grounded.

[0037] The second end of the sixth coil is connected to the DC power supply; the common contact of the sixth electromagnetic switch serves as the first end of the AC forward and reverse control module, the normally closed contact serves as the third end of the AC forward and reverse control module, and the normally open contact serves as the second end of the AC forward and reverse control module.

[0038] Furthermore, the selection switch module includes a sixth controllable switch module and a seventh electromagnetic switch;

[0039] The first end of the sixth controllable switch module is connected to the first end of the seventh coil in the seventh electromagnetic switch, the control end serves as the control end of the selection switch module, and the second end is grounded.

[0040] The second end of the seventh coil is connected to a DC power supply; the common contact of the seventh electromagnetic switch serves as the third end of the selection switch module, the normally closed contact serves as the second end of the selection switch module, and the normally open contact serves as the first end of the selection switch module.

[0041] To address the aforementioned technical problems, this application also provides a burner control system, including a control module and a switching circuit as described above, wherein the control module is connected to the switching circuit.

[0042] This application provides a switching circuit and a burner control system. The switching circuit includes a voice acquisition module connected to a control module, a voltage conversion module whose input is connected to an AC power supply, and an output connected to the first terminal of a DC switching module. The second terminal of the DC switching module is grounded, and its third terminal is connected to the first terminal of a selection switch module. The common terminal of this connection serves as the first output of the switching circuit, used to connect to the eighth pin of the burner. The fourth terminal serves as the fourth output of the switching circuit, used to connect to the twelfth pin of the burner. The first terminal of the AC switching module is connected to an AC power supply, its second terminal serves as the second output of the switching circuit, used to connect to the ninth pin of the burner, and its third terminal is connected to the second terminal of the selection switch module. The third terminal of the selection switch module serves as the third output of the switching circuit, used to connect to the eleventh pin of the burner. The tenth pin of the burner is connected to the neutral terminal of the AC power supply. As can be seen, this solution eliminates the need for operators to distinguish whether a slag removal motor exists under the current burner manufacturer and model, or which pin the slag removal motor corresponds to. Operators simply need to connect the first to fourth output terminals of the switching circuit to the eighth, ninth, eleventh, and twelfth pins of the burner, respectively, with the tenth pin connected to the AC power neutral line. The input voice is then collected by the voice acquisition module, and the control module switches the circuit accordingly, achieving accurate connection between the burner and the control module. This facilitates precise control of the burner, achieving predetermined control objectives. Furthermore, the wiring is simple, with low operator dependence, and it is compatible with burners from various manufacturers and models, avoiding equipment malfunctions caused by manual wiring, thus benefiting practical applications.

[0043] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application, it can be implemented according to the contents of the specification. In order to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0044] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0045] Figure 1 A schematic diagram of a switching circuit provided by this utility model;

[0046] Figure 2 A pin wiring diagram corresponding to a burner provided by this utility model;

[0047] Figure 3 A schematic diagram of another switching circuit provided by this utility model;

[0048] Figure 4 A schematic diagram of the structure of a burner control system provided by this utility model;

[0049] Figure 5 A schematic diagram of a driving circuit provided by this utility model;

[0050] Figure 6 This is a schematic diagram of the structure of a voltage conversion module provided by this utility model;

[0051] Figure 7 This is a schematic diagram of another voltage conversion module provided by this utility model;

[0052] Figure 8 This is a schematic diagram of the structure of a DC switching module provided by this utility model;

[0053] Figure 9 This is a schematic diagram of the structure of a third switch module provided by this utility model;

[0054] Figure 10 This is a structural schematic diagram of a fourth switch module provided by this utility model;

[0055] Figure 11 A schematic diagram of the structure of an AC switch module provided by this utility model;

[0056] Figure 12 A schematic diagram of another AC switch module provided by this utility model;

[0057] Figure 13 This is a schematic diagram of the structure of a selection switch module provided by this utility model. Detailed Implementation

[0058] The core of this utility model is to provide a switching circuit and burner control system that is simple to wire, has low dependence on operator operation, is compatible with burners from various manufacturers and models, and avoids equipment failures caused by manual wiring.

[0059] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application are within the scope of protection of this application.

[0060] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0061] Please refer to Figure 1 , Figure 1 This is a schematic diagram of a switching circuit provided by the present invention.

[0062] This switching circuit is applied to the burner control system, which includes a control module 1; the switching circuit 2 includes a voice acquisition module, a voltage conversion module 3, a DC switch module 4, a selection switch module 5, and an AC switch module 6, all of which are connected to the control module 1.

[0063] The voice acquisition module is used to acquire input voice and send it to the control module 1, so that the control module 1 can control the DC switch module 4, the selection switch module 5 and the AC switch module 6 to turn on and off, and control the voltage conversion module 3 to perform voltage conversion according to the input voice.

[0064] The input terminal of voltage conversion module 3 is connected to the AC power supply, and the output terminal is connected to the first terminal of DC switching module 4;

[0065] The second terminal of the DC switch module 4 is grounded, the third terminal is connected to the first terminal of the selector switch module 5 and the common terminal of the connection is used as the first output terminal of the switching circuit 2 for connection to the eighth pin of the burner 10, and the fourth terminal is used as the fourth output terminal of the switching circuit 2 for connection to the twelfth pin of the burner 10.

[0066] The first end of the AC switch module 6 is connected to the AC power supply, the second end serves as the second output end of the switching circuit 2 for connection to the ninth pin of the burner 10, and the third end is connected to the second end of the selection switch module 5.

[0067] The third terminal of the selector switch module 5 is used as the third output terminal of the switching circuit 2 for connection to the eleventh pin of the burner 10; the tenth pin of the burner 10 is connected to the neutral terminal of the AC power supply.

[0068] In this embodiment, considering that the pin functions and order of the first to seventh pins are consistent in burners from different manufacturers or models, but the type of ash removal motor used may be different, the pins related to the ash removal motor will also change. Specifically, burners include a feed motor, ignition rod, blower and discharge motor. Some burners do not have an ash removal motor, while others do. The type of ash removal motor may be different, that is, it may be an AC ash removal motor or a DC ash removal motor. DC ash removal motors can be further divided into 12V DC ash removal motors and 24V ash removal motors. The pin function order corresponding to the ash removal motor may also be different. In practical applications, it has been found that the pin function order corresponding to burners from different manufacturers and / or different models can be roughly divided into 6 cases. Please refer to Table 1. Table 1 is a schematic table of the pin function order of a burner provided by this utility model.

[0069] Table 1

[0070]

[0071]

[0072] Please refer to the following first. Figure 2 , Figure 2This utility model provides a pin wiring diagram for a burner. In Table 1, the feed motor JLL refers to the first pin related to the feed motor in burner 10, and the feed motor N refers to the second pin related to the feed motor in burner 10. The ignition rod DHL refers to the third pin related to the ignition rod in burner 10, and the ignition rod N refers to the fourth pin related to the ignition rod in burner 10. The blower GFL refers to the fifth pin related to the blower in burner 10, and the blower N refers to the sixth pin related to the blower in burner 10. The unloading motor TLL refers to the seventh pin related to the unloading motor in burner 10. The 12V DC ash removal motor CZDC+ refers to the control pin in burner 10 that includes a 12V DC ash removal motor and corresponds to the forward rotation of the 12V DC ash removal motor. In practical applications, it may be the eighth or eleventh pin of burner 10. The 12V DC ash removal motor CZDC- refers to the pin corresponding to the reverse rotation of the 12V DC ash removal motor. The control pin for the 24V DC ash removal motor (CZDC+) is the twelfth pin of burner 10 in practical applications; the control pin for the forward rotation of the 24V DC ash removal motor (CZDC+) is the eighth or eleventh pin of burner 10 in practical applications; the control pin for the reverse rotation of the 24V DC ash removal motor (CZDC-) is the twelfth pin of burner 10 in practical applications; the control pin for the forward rotation of the AC ash removal motor (CZZZL) is the ninth pin of burner 10 in practical applications; the control pin for the reverse rotation of the AC ash removal motor (CZFZL) is the eleventh pin of burner 10 in practical applications; the neutral wire lead-out pin for the AC ash removal motor (N) is the tenth pin of burner 10 in practical applications. Figure 2 For ease of explanation, the eighth pin is labeled CZDC+ to indicate that a terminal with the same designation in subsequent illustrations can be connected; the ninth pin is labeled CZZZL to indicate that a terminal with the same designation in subsequent illustrations can be connected; since the eleventh pin has multiple possibilities, it is labeled P11 to indicate that a terminal with the same designation in subsequent illustrations can be connected; and the twelfth pin is labeled CZDC- to indicate that a terminal with the same designation in subsequent illustrations can be connected.

[0073] Please refer to Figure 3 , Figure 3This is a schematic diagram of another switching circuit provided by this utility model. The voice acquisition module 7 can acquire input voice within its own pickup range and send it to the control module 1, so that the control module 1 can control the switching circuit 2 based on the input voice. Specifically, the switching circuit 2 can also include a voice output module 8 connected to the control module 1, which is used to output the feedback voice determined by the control module 1 based on the input voice, so as to realize the interaction between the operator and the user and improve the user experience. More specifically, in practical applications, operators can pre-set wake-up words, such as "start control." When the voice acquisition module 7 acquires the voice indicating "start control," the voice output module 8 can respond with "What operation do you want to perform?" to initiate the voice interaction process. Subsequently, when the voice acquisition module 7 acquires the voice indicating "set burner," the voice output module 8 can respond with "Please state the burner model and / or manufacturer." When the voice acquisition module 7 acquires the burner model and / or manufacturer, since the control module 1 has a pre-stored preset manufacturer-model-pin function sequence (this sequence can also further store the power supply type, i.e., whether the slag remover is DC or AC powered), the accurate pin function sequence can be obtained, and the switching circuit 2 can be controlled accordingly. It should also be noted that if the pin function sequence corresponding to the burner model and / or manufacturer input by the operator does not exist in the above sequence, the output "Burner 10 does not yet support that model and / or manufacturer" can be directly output.

[0074] In addition, the system can also realize the control requirements input by the operator, such as controlling the slag removal motor to rotate forward, by switching the circuit 2. Of course, in practical applications, the pins corresponding to the feed motor, ignition rod, blower and discharge motor in the burner 10 can be connected to the control module 1 through the drive circuit 9. The control of the feed motor, ignition rod, blower and discharge motor can be configured in the control module 1 in the form of the first operating parameter, and the start, stop or forward and reverse control of the slag removal motor can be configured in the control module 1 in the form of the second operating parameter. Then, the control of the drive circuit 9 can be automatically realized by the first operating parameter, and the configuration of the switching circuit 2 can be automatically realized by the second operating parameter, resulting in a high degree of automation.

[0075] More specifically, control module 1 may include a controller and a voice recognition module U1, such as Figure 3As shown, both the voice acquisition module 7 and the voice output module 8 are connected to the controller via the voice recognition module U1. Specifically, the voice recognition module U1 can be a voice module SU-03T. The USART RX and USART TX terminals of the voice module SU-03T are used to connect to the controller. Due to the focus of the image and to avoid confusing wiring, the controller setup diagram is omitted here. Furthermore, the peripheral circuit of the voice module SU-03T may also include capacitors C1, C2, C3, and C4 to ensure the reliable operation of the voice module SU-03T. The specific connection method is as follows... Figure 3 As shown, details will not be elaborated here. For example, the voice acquisition module 7 can be a microphone, and the voice output module 8 can be a speaker.

[0076] For more details, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of a burner control system provided by this utility model. Figure 4 The diagram shows the connection between the burner 10 and the switching circuit 2 and control module 1 via the drive circuit 9. Of course, the control module 1 can also be connected to the display module to interact with the operator on the human-machine interface of the display module. It can also be connected to interface circuits such as sensors, cold air dampers, and circulating fans to achieve corresponding control and interaction. No special limitations are made here, and it can be flexibly set according to actual needs.

[0077] Please refer to Figure 5 , Figure 5 A schematic diagram of a driving circuit provided by this utility model; Figure 5 The pin marked with L indicates that it is connected to the live wire (L) of the AC power supply, and the pin marked with N indicates that it is connected to the neutral wire (N) of the AC power supply. Figure 2The pin configurations correspond as follows: For the feed motor, a first drive submodule U2 is provided, whose first output terminal OUT_L is connected to the first pin JLL of the burner 10, and its second output terminal OUT_N is connected to the second pin N of the burner 10 and also to the neutral terminal N of the AC power supply. The PWM terminal CTRL_JL of the first drive submodule U2 is connected to the control module 1. For the blower, a second drive submodule U3 is provided, whose first output terminal OUT_L is connected to the fifth pin GFL of the burner 10, and its second output terminal OUT_N is connected to the sixth pin N of the burner 10 and also to the neutral terminal N of the AC power supply. The PWM terminal CTRL_GF of the second drive submodule U3 is connected to the control module 1. For the ignition rod, a first transistor Q4 is provided. The first relay RELAY5 is connected to the collector of the first transistor Q4 and one end of the coil of the first relay RELAY5, and the other end of the coil is connected to a DC power supply, which can be 12V (specifically, the 12V power supply can be taken from the first voltage converter 31 in the following embodiment). One end of the normally open switch of the first relay RELAY5 is connected to the live wire L of the AC power supply, and the other end is used to connect to the third pin DHL of the burner 10. It is connected to the fourth pin N of the burner 10 through capacitor C5 and also to the neutral wire N of the AC power supply. In order to ensure the reliable operation of the circuit corresponding to the ignition rod, resistors R7 and R8 and Zener diode D6 are also provided. The first end CTRL_DH of resistor R7 is used to connect to the control module 1. The specific setting method is as follows: Figure 5 As shown, details are omitted here. Corresponding to the unloading motor, a second transistor Q5 and a second relay RELAY6 are provided. The collector of the second transistor Q5 is connected to one end of the coil of the second relay RELAY6, and the other end of the coil is connected to a DC power supply. This DC power supply can be 12V (specifically, the 12V power supply can be taken from the first voltage converter 31 in the following embodiment). One end of the normally open switch of the second relay RELAY6 is connected to the live wire L of the AC power supply, and the other end is used to connect to the seventh pin TLL of the burner 10. In order to ensure the reliable operation of the circuit corresponding to the unloading motor, resistors R9 and R10 and a Zener diode D7 are also provided. They are connected to the neutral wire N of the AC power supply through capacitor C6. The first end CTRL_TL of resistor R9 is used to connect to the control module 1. The specific setting method is as follows. Figure 5 As shown, further details will not be elaborated here.

[0078] Please refer to further details. Figure 1 It should be noted that, Figure 1Due to the focus of the image display, the connection diagram between the voice acquisition module 7, the voice output module 8, and the drive circuit 9 and the control module 1 is temporarily omitted. To avoid confusion in the wiring, the control module 1 is illustrated with a circle and an attached diagram. From the perspective of the implementation principle, based on the above connection relationship, the voltage conversion module 3 is used to convert the AC voltage output by the AC power supply to output a first DC voltage or a second DC voltage corresponding to the working voltage of the slag removal motor in the burner 10. For example, the first DC voltage can be 12V and the second DC voltage can be 24V.

[0079] The DC switch module 4 is used so that when the slag removal motor is powered by AC or by DC and is stopped, its third and fourth terminals are connected to its second terminal; when the slag removal motor is powered by DC and is rotating forward, its first and third terminals are connected; and when the slag removal motor is powered by DC and is rotating in reverse, its first and fourth terminals are connected.

[0080] The AC switch module 6 is used to stop output when the slag removal motor is powered by DC or AC and stops; when the slag removal motor is powered by AC and rotates forward, its first and second terminals are connected; when the slag removal motor is powered by AC and rotates in reverse, its first and third terminals are connected.

[0081] Selector switch module 5 is used to connect its first and third terminals when the slag removal motor is powered by DC, and to connect its second and third terminals when the slag removal motor is powered by AC.

[0082] In summary, this application provides a switching circuit that eliminates the need for operators to distinguish whether a slag removal motor exists under the current burner manufacturer and model, or which pin the slag removal motor corresponds to. Simply connect the first to fourth output terminals of the switching circuit to the eighth, ninth, eleventh, and twelfth pins of the burner, respectively, with the tenth pin connected to the AC power neutral line. The input voice can then be collected by the voice acquisition module, and the control module will switch the circuit accordingly, achieving accurate connection between the burner and the control module. This facilitates precise control of the burner, achieving predetermined control objectives. Furthermore, the wiring is simple, with low operator dependence, and it is compatible with burners from various manufacturers and models, avoiding equipment malfunctions caused by manual wiring, thus benefiting practical applications.

[0083] Based on the above embodiments:

[0084] In some embodiments, the voltage conversion module 3 includes a first voltage converter 31, a second voltage converter 32, a first switch module 33, and a second switch module 34;

[0085] The input terminal of the first voltage converter 31 is connected to the AC power supply, and the output terminal is connected to the first input terminal of the first switch module 33. It is used to convert the AC voltage output by the AC power supply to output a first DC voltage corresponding to the working voltage of the slag removal motor in the burner 10.

[0086] The control terminal of the second switch module 34 is connected to the control module 1, the input terminal is connected to the AC power supply, and the output terminal is connected to the input terminal of the second voltage converter 32.

[0087] The output terminal of the second voltage converter 32 is connected to the second input terminal and the control terminal of the first switch module 33, and is used to convert the AC voltage when the second switch module 34 is turned on, so as to output a second DC voltage corresponding to the working voltage of the slag removal motor.

[0088] The output terminal of the first switch module 33 is connected to the first terminal of the DC switch module 4.

[0089] Specifically, the second switch module 34 is turned on when the slag removal motor is powered by DC and the operating voltage is the second DC voltage, and turned off when the slag removal motor is powered by AC, or powered by DC and the operating voltage is the first DC voltage; the first switch module 33 is turned on between its first input terminal and output terminal when the slag removal motor is powered by DC and the operating voltage is the first DC voltage, and turned on between its second input terminal and output terminal when the slag removal motor is powered by DC and the operating voltage is the second DC voltage. Please refer to [reference needed]. Figure 6 , Figure 6 This is a schematic diagram of the structure of a voltage conversion module provided by this utility model.

[0090] In some embodiments, the second switch module 34 includes a first controllable switch module 341 and a first electromagnetic switch;

[0091] The first terminal of the first controllable switch module 341 is connected to the first terminal of the first coil of the first electromagnetic switch, the second terminal is grounded, and the control terminal CTRL_CZDCXZ is connected to the control module 1. It is used to turn off when the working voltage of the slag removal motor is the first DC voltage and to turn on when the working voltage is the second DC voltage.

[0092] The second end of the first coil is connected to a DC power supply; the first end of the normally open switch of the first electromagnetic switch is connected to an AC power supply, and the second end is connected to the input end of the second voltage converter 32.

[0093] For details, please refer to Figure 7 , Figure 7 This is a schematic diagram of another voltage conversion module provided by the present invention, wherein the DC power supply uses the first DC voltage output by the first voltage converter 31, and the first DC voltage here is 12V; Figure 7 In the attached diagram, reference numeral N indicates connection to the neutral wire N of the AC power supply, and reference numeral L indicates connection to the live wire L of the AC power supply; the first voltage converter 31 may include a first AC-DC voltage converter U4, and to ensure reliable operation of the first AC-DC voltage converter U4, capacitors C7 and C8 may also be provided, with the connection method as follows: Figure 7 The diagram shows that the second voltage converter 32 may include a second AC-DC voltage converter U6, and to ensure the reliable operation of the second AC-DC voltage converter U6, capacitors C9 and C10 may also be provided, with the connection method as shown in the diagram. Figure 7 The diagram shows the output terminal of voltage conversion module 3 labeled as VDC, indicating that terminals with the same label can be connected in subsequent illustrations.

[0094] The first electromagnetic switch can be as follows: Figure 7 The third relay RELAY9 shown can be included in the first controllable switch module 341, which may include a third transistor Q8. To ensure the reliable operation of the third transistor Q8, resistors R15 and R16, and a Zener diode D10 are also provided, connected as follows: Figure 7 As illustrated in the diagram; in actual operation, when the control terminal CTRL_CZDCXZ of the first controllable switch module 341 receives a high level, it indicates that the working voltage of the slag removal motor is the first DC voltage, and the first controllable switch module 341 is turned off; when the control terminal CTRL_CZDCXZ of the first controllable switch module 341 receives a low level, it indicates that the working voltage of the slag removal motor is the second DC voltage, and the first controllable switch module 341 is turned on.

[0095] In some embodiments, the first switch module 33 includes a second electromagnetic switch;

[0096] The first end of the second coil of the second electromagnetic switch is connected to the output end of the second voltage converter 32, and the second end is grounded.

[0097] The common contact of the second electromagnetic switch is connected to the first end of the DC switch module 4, the normally closed contact is connected to the output end of the first voltage converter 31, and the normally open contact is connected to the output end of the second voltage converter 32.

[0098] Specifically, the second electromagnetic switch can be the fourth relay RLY1 as shown in the figure. The common contact of the fourth relay RLY1 is connected to the first terminal of the DC switching module 4 as the output terminal VDC of the voltage conversion module 3. Furthermore, to ensure reliable circuit operation, a Zener diode D1 can also be provided, such as... Figure 7 As shown.

[0099] In some embodiments, the DC switching module 4 includes a third switching module 41 and a fourth switching module 42;

[0100] The first end of the third switch module 41 is connected to the first end of the fourth switch module 42, and the common end of the connection is used as the first end of the DC switch module 4. The second end is connected to the second end of the fourth switch module 42, and the common end of the connection is used as the second end of the DC switch module 4. The third end is used as the third end of the DC switch module 4. The control end is connected to the control module 1.

[0101] The third terminal of the fourth switch module 42 serves as the fourth terminal of the DC switch module 4, and the control terminal is connected to the control module 1.

[0102] For details, please refer to Figure 8 , Figure 8 This is a schematic diagram of the structure of a DC switch module provided by this utility model; the third switch module 41 is used to make its third terminal connected to its second terminal when the slag removal motor is powered by AC, or powered by DC and stopped, or powered by DC and reversed; and when the slag removal motor is powered by DC and rotates forward, its first terminal is connected to its third terminal.

[0103] The fourth switch module 42 is used to connect its third terminal and second terminal when the slag removal motor is powered by AC, or powered by DC and stopped, or powered by DC and rotating in the forward direction; and to connect its first terminal and third terminal when the slag removal motor is powered by DC and rotating in the reverse direction.

[0104] In some embodiments, the third switch module 41 includes a second controllable switch module 411 and a third electromagnetic switch, and the fourth switch module 42 includes a third controllable switch module 421 and a fourth electromagnetic switch.

[0105] The first end of the second controllable switch module 411 is connected to the first end of the third coil in the third electromagnetic switch. The control terminal CTRL_CZDC+ serves as the control terminal of the third switch module 41, and the second end is grounded.

[0106] The second end of the third coil is connected to a DC power supply; the common contact of the third electromagnetic switch serves as the third end of the third switch module 41, the normally closed contact serves as the second end of the third switch module 41, and the normally open contact serves as the first end of the third switch module 41.

[0107] The first end of the third controllable switch module 421 is connected to the first end of the fourth coil in the fourth electromagnetic switch, the control terminal CTRL_CZDC- serves as the control terminal of the fourth switch module 42, and the second end is grounded.

[0108] The second end of the fourth coil is connected to a DC power supply; the common contact of the fourth electromagnetic switch serves as the third end of the fourth switch module 42, the normally closed contact serves as the second end of the fourth switch module 42, and the normally open contact serves as the first end of the fourth switch module 42.

[0109] In this embodiment, the second controllable switch module 411 is used to turn off when the slag removal motor is powered by AC, or powered by DC and stopped, or powered by DC and rotating in reverse, and to turn on when the slag removal motor is powered by DC and rotating in the forward direction; the third controllable switch module 421 is used to turn off when the slag removal motor is powered by AC, or powered by DC and stopped, or powered by DC and rotating in the forward direction, and to turn on when the slag removal motor is powered by DC and rotating in reverse.

[0110] Please refer to the corresponding... Figure 2 of Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of the structure of a third switch module provided by this utility model. Figure 10 This is a schematic diagram of the structure of a fourth switch module provided by this utility model. Figure 9 and Figure 10 The DC power supply uses the first DC voltage output from the first voltage converter 31, where the first DC voltage is 12V.

[0111] Specifically, the third electromagnetic switch can be as follows: Figure 9 The fifth relay RLY2 shown, the second controllable switch module 411 may include a fourth transistor Q1, and in order to ensure the reliable operation of the fourth transistor Q1, resistors R1 and R2 and a Zener diode D2 are also provided, and the connection method is as follows. Figure 9 As illustrated in the diagram, in actual operation, the second controllable switch module 411 is turned on when the control terminal CTRL_CZDC+ receives a high level, and turned off when the control terminal CTRL_CZDC+ receives a low level.

[0112] The fourth electromagnetic switch can be the sixth relay RLY3 as shown in the figure. The third controllable switch module 421 can include the fifth transistor Q2. In order to ensure the reliable operation of the fifth transistor Q2, resistors R3 and R4 and Zener diode D4 are also provided. The connection method is as follows: Figure 10 As illustrated in the diagram, in actual operation, the control terminal CTRL_CZDC- of the third controllable switch module 421 is turned on when it receives a high level, and turned off when it receives a low level.

[0113] In some embodiments, the AC switch module 6 includes an AC start / stop module 61 and an AC forward / reverse control module 62;

[0114] The first end of the AC start-stop module 61 serves as the first end of the AC switch module 6, the second end is connected to the first end of the AC forward and reverse control module 62, and the control end is connected to the control module 1.

[0115] The second terminal of the AC forward and reverse control module 62 serves as the second terminal of the AC switch module 6, the third terminal serves as the third terminal of the AC switch module 6, and the control terminal is connected to the control module 1.

[0116] For details, please refer to Figure 11 , Figure 11 This is a schematic diagram of the structure of an AC switch module provided by this utility model; the AC start / stop module 61 is used to conduct when the slag removal motor is powered by AC and rotates in either forward or reverse direction, and to turn off when the slag removal motor is powered by DC or is powered by AC and stops.

[0117] The AC forward and reverse rotation control module 62 is used to make its first and second terminals connected when the slag removal motor is powered by AC and rotates in the forward direction, and to make its first and third terminals connected when the slag removal motor is powered by AC and rotates in the reverse direction.

[0118] In some embodiments, the AC start / stop module 61 includes a fourth controllable switch module 611 and a fifth electromagnetic switch; the AC forward / reverse control module 62 includes a fifth controllable switch module 621 and a sixth electromagnetic switch.

[0119] The first terminal of the fourth controllable switch module 611 is connected to the first terminal of the fifth coil in the fifth electromagnetic switch, the control terminal CTRL_CZAC serves as the control terminal of the AC start-stop module 61, and the second terminal is grounded.

[0120] The second end of the fifth coil is connected to the DC power supply; the first end of the normally open switch of the fifth electromagnetic switch serves as the first end of the AC start-stop module 61, and the second end serves as the second end of the AC start-stop module 61.

[0121] The first terminal of the fifth controllable switch module 621 is connected to the first terminal of the sixth coil in the sixth electromagnetic switch. The control terminal CTRL_CZACZF serves as the control terminal of the AC forward and reverse control module 62, and the second terminal is grounded.

[0122] The second end of the sixth coil is connected to a DC power supply; the common contact of the sixth electromagnetic switch serves as the first end of the AC forward and reverse control module 62, the normally closed contact serves as the third end of the AC forward and reverse control module 62, and the normally open contact serves as the second end of the AC forward and reverse control module 62.

[0123] In this embodiment, the fourth controllable switch module 611 is turned on when the slag removal motor is powered by AC and turned off when the slag removal motor is powered by DC or AC and stops; the fifth controllable switch module 621 is turned on when the slag removal motor is powered by AC and rotates forward and turned off when the slag removal motor is powered by AC and rotates in reverse.

[0124] For details, please refer to Figure 12 , Figure 12This is a schematic diagram of another AC switch module provided by the present invention. The DC power supply uses the first DC voltage output from the first voltage converter 31, which is 12V. Figure 12 In the attached diagram, the reference numeral N indicates connection to the neutral terminal N of the AC power supply (here, it is connected to the neutral terminal N via capacitor C11), and the reference numeral L indicates connection to the live terminal L of the AC power supply.

[0125] The fifth electromagnetic switch can be as follows: Figure 12 The seventh relay RLY4 is shown; the fourth controllable switch module 611 may include a sixth transistor Q6, and in order to ensure the reliable operation of the sixth transistor Q6, resistors R11 and R12 and a Zener diode D8 are also provided, with the connection method as follows. Figure 12 As illustrated in the diagram, in actual operation, the control terminal CTRL_CZAC of the fourth controllable switch module 611 is turned on when it receives a high level, and turned off when it receives a low level.

[0126] The sixth electromagnetic switch can be as follows: Figure 12 The eighth relay RLY5 is shown; the fifth controllable switch module 621 may include a seventh transistor Q7, and to ensure the reliable operation of the seventh transistor Q7, resistors R13 and R14 and a Zener diode D9 are also provided, with the connection method as follows. Figure 12 The diagram illustrates this; in actual operation, the control terminal CTRL_CZACZF of the fifth controllable switch module 621 is turned on when it receives a high level, and turned off when the control terminal CTRL_CZACZF of the fourth controllable switch module 611 receives a low level. Furthermore, the normally closed contact of the sixth electromagnetic switch is used to connect to the subsequent selection module 5, and is labeled CZFZL to indicate its connection to the subsequent selection module 5. Figure 13 Terminals with the same annotation can be connected.

[0127] In some embodiments, the selection switch module 5 includes a sixth controllable switch module 511 and a seventh electromagnetic switch;

[0128] The first end of the sixth controllable switch module 511 is connected to the first end of the seventh coil in the seventh electromagnetic switch, the control terminal CTRL_CZDJXZ serves as the control terminal of the selector switch module 5, and the second end is grounded.

[0129] The second end of the seventh coil is connected to a DC power supply; the common contact of the seventh electromagnetic switch serves as the third end of the selector switch module 5, the normally closed contact serves as the second end of the selector switch module 5, and the normally open contact serves as the first end of the selector switch module 5.

[0130] In this embodiment, the sixth controllable switch module 511 is used to connect its first and third terminals when the slag removal motor is powered by DC, and to connect its second and third terminals when the slag removal motor is powered by AC. For details, please refer to... Figure 13 , Figure 13 This is a schematic diagram of a selection switch module provided by this utility model. The seventh electromagnetic switch can be as follows: Figure 13 The ninth relay RLY6 is shown; the sixth controllable switch module 511 may include an eighth transistor Q9, and to ensure the reliable operation of the eighth transistor Q9, resistors R17 and R18 and a Zener diode D11 are also provided, with the connection method as follows. Figure 13 As illustrated in the diagram, in actual operation, the control terminal CTRL_CZDJXZ of the sixth controllable switch module 511 is turned on when it receives a high level, and turned off when it receives a low level.

[0131] Specifically, if there is no slag removal motor in the burner 10, after the corresponding connection between the switching circuit 2 and the pins of the burner 10 is realized as described in the above embodiment, the control terminals of each controllable switch module will receive a low level.

[0132] This utility model also provides a burner control system, including a control module 1 and a switching circuit 2 as described above, wherein the control module 1 is connected to the switching circuit 2.

[0133] For a description of the burner control system provided in this application, please refer to the above-described embodiment of the switching circuit. Furthermore, the burner control system may also include a drive circuit 9, as detailed in the above-described embodiments. Figure 4 As mentioned above, it will not be repeated here.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

[0136] It should also be noted that, in this specification, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion; the above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A switching circuit, characterized in that, The invention is applied to a burner control system, which includes a control module; the switching circuit includes a voice acquisition module, a voltage conversion module, a DC switch module, a selection switch module, and an AC switch module, all of which have their control terminals connected to the control module. The voice acquisition module is used to acquire input voice and send it to the control module, so that the control module can control the DC switch module, the selection switch module and the AC switch module to turn on and off, and control the voltage conversion module to perform voltage conversion according to the input voice. The input terminal of the voltage conversion module is connected to the AC power supply, and the output terminal is connected to the first terminal of the DC switching module. The second terminal of the DC switch module is grounded, the third terminal is connected to the first terminal of the selector switch module and the common terminal of the connection is used as the first output terminal of the switching circuit for connection to the eighth pin of the burner, and the fourth terminal is used as the fourth output terminal of the switching circuit for connection to the twelfth pin of the burner. The first end of the AC switch module is connected to the AC power supply, the second end serves as the second output end of the switching circuit and is used to connect to the ninth pin of the burner, and the third end is connected to the second end of the selection switch module. The third terminal of the selection switch module serves as the third output terminal of the switching circuit and is connected to the eleventh pin of the burner; the tenth pin of the burner is connected to the neutral terminal of the AC power supply.

2. The switching circuit as described in claim 1, characterized in that, The voltage conversion module includes a first voltage converter, a second voltage converter, a first switch module, and a second switch module; The input terminal of the first voltage converter is connected to an AC power source, and the output terminal is connected to the first input terminal of the first switching module. It is used to convert the AC voltage output by the AC power source to output a first DC voltage corresponding to the working voltage of the slag removal motor in the burner. The control terminal of the second switch module is connected to the control module, the input terminal is connected to the AC power supply, and the output terminal is connected to the input terminal of the second voltage converter. The output terminal of the second voltage converter is connected to the second input terminal and the control terminal of the first switch module, and is used to convert the AC voltage when the second switch module is turned on, so as to output a second DC voltage corresponding to the working voltage of the slag removal motor. The output terminal of the first switching module is connected to the first terminal of the DC switching module.

3. The switching circuit as described in claim 2, characterized in that, The second switch module includes a first controllable switch module and a first electromagnetic switch; The first terminal of the first controllable switch is connected to the first terminal of the first coil of the first electromagnetic switch, the second terminal is grounded, and the control terminal is connected to the control module. It is used to turn off when the working voltage of the slag removal motor is the first DC voltage and to turn on when the working voltage is the second DC voltage. The second end of the first coil is connected to a DC power supply; the first end of the normally open switch of the first electromagnetic switch is connected to the AC power supply, and the second end is connected to the input terminal of the second voltage converter.

4. The switching circuit as described in claim 3, characterized in that, The first switch module includes a second electromagnetic switch; The first end of the second coil of the second electromagnetic switch is connected to the output terminal of the second voltage converter, and the second end is grounded; The common contact of the second electromagnetic switch is connected to the first terminal of the DC switch module, the normally closed contact is connected to the output terminal of the first voltage converter, and the normally open contact is connected to the output terminal of the second voltage converter.

5. The switching circuit as described in claim 1, characterized in that, The DC switching module includes a third switching module and a fourth switching module; The first terminal of the third switch module is connected to the first terminal of the fourth switch module, and the common terminal of the connection is used as the first terminal of the DC switch module. The second terminal is connected to the second terminal of the fourth switch module, and the common terminal of the connection is used as the second terminal of the DC switch module. The third terminal is used as the third terminal of the DC switch module. The control terminal is connected to the control module. The third terminal of the fourth switch module serves as the fourth terminal of the DC switch module, and the control terminal is connected to the control module.

6. The switching circuit as described in claim 5, characterized in that, The third switch module includes a second controllable switch module and a third electromagnetic switch, and the fourth switch module includes a third controllable switch module and a fourth electromagnetic switch. The first end of the second controllable switch module is connected to the first end of the third coil in the third electromagnetic switch, the control end serves as the control end of the third switch module, and the second end is grounded; The second end of the third coil is connected to a DC power supply; the common contact of the third electromagnetic switch serves as the third end of the third switch module, the normally closed contact serves as the second end of the third switch module, and the normally open contact serves as the first end of the third switch module. The first end of the third controllable switch module is connected to the first end of the fourth coil in the fourth electromagnetic switch, the control end serves as the control end of the fourth switch module, and the second end is grounded. The second end of the fourth coil is connected to the DC power supply; the common contact of the fourth electromagnetic switch serves as the third end of the fourth switch module, the normally closed contact serves as the second end of the fourth switch module, and the normally open contact serves as the first end of the fourth switch module.

7. The switching circuit as described in any one of claims 1 to 6, characterized in that, The AC switch module includes an AC start / stop module and an AC forward / reverse control module; The first end of the AC start-stop module serves as the first end of the AC switch module, the second end is connected to the first end of the AC forward and reverse control module, and the control end is connected to the control module. The second terminal of the AC forward and reverse control module serves as the second terminal of the AC switch module, the third terminal serves as the third terminal of the AC switch module, and the control terminal is connected to the control module.

8. The switching circuit as described in claim 7, characterized in that, The AC start / stop module includes a fourth controllable switch module and a fifth electromagnetic switch; the AC forward / reverse control module includes a fifth controllable switch module and a sixth electromagnetic switch. The first end of the fourth controllable switch module is connected to the first end of the fifth coil in the fifth electromagnetic switch, the control end serves as the control end of the AC start-stop module, and the second end is grounded. The second end of the fifth coil is connected to a DC power supply; the first end of the normally open switch of the fifth electromagnetic switch serves as the first end of the AC start-stop module, and the second end serves as the second end of the AC start-stop module. The first end of the fifth controllable switch module is connected to the first end of the sixth coil in the sixth electromagnetic switch, the control end serves as the control end of the AC forward and reverse control module, and the second end is grounded. The second end of the sixth coil is connected to the DC power supply; the common contact of the sixth electromagnetic switch serves as the first end of the AC forward and reverse control module, the normally closed contact serves as the third end of the AC forward and reverse control module, and the normally open contact serves as the second end of the AC forward and reverse control module.

9. The switching circuit as described in claim 7, characterized in that, The selection switch module includes a sixth controllable switch module and a seventh electromagnetic switch; The first end of the sixth controllable switch module is connected to the first end of the seventh coil in the seventh electromagnetic switch, the control end serves as the control end of the selection switch module, and the second end is grounded. The second end of the seventh coil is connected to a DC power supply; the common contact of the seventh electromagnetic switch serves as the third end of the selection switch module, the normally closed contact serves as the second end of the selection switch module, and the normally open contact serves as the first end of the selection switch module.

10. A combustion engine control system, characterized in that, It includes a control module and a switching circuit as described in any one of claims 1 to 9, wherein the control module is connected to the switching circuit.

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