Controller circuit of electric wall-hanging stove

Abstract

The utility model discloses an electric wall-hanging stove controller circuit, and relates to the wall-hanging stove control field, the electric wall-hanging stove controller circuit comprises a main control circuit and a communication module, the main control circuit is connected with the communication module, the communication module is connected with a WIFI module, and the WIFI module is used for being connected with a client. According to the embodiment of the utility model, the main control circuit is connected with the communication circuit, the communication circuit is connected with the WIFI module, and the WIFI module is used for being connected with the client, so that the client can receive working state data from the wall-hanging stove controller circuit, and centralized data collection for fault feedback is realized; and a user can conveniently and remotely know the working state of the electric wall-hanging stove controller.

Description

Technical Field

[0001] The utility model relates to an electric wall-mounted boiler controller, in particular to an electric wall-mounted boiler controller circuit. Background Art

[0002] As a clean and efficient heating device, the electric wall-mounted boiler has gradually gained favor in the market. As the core of the electric wall-mounted boiler, it is to efficiently and intelligently heat cold water. To achieve the efficient and intelligent operation of the electric wall-mounted boiler, the design of the corresponding circuit is crucial. At the same time, with the development of Internet of Things technology, users hope to achieve remote control through terminals such as mobile phones. When the electric wall-mounted boiler fails, users also hope to know the fault situation on the mobile phone side and deal with it in time.

[0003] The existing electric wall-mounted boilers have single functions and cannot realize the real-time monitoring of the working state and fault feedback of the electric wall-mounted boiler, which affects the user experience. Summary of the Utility Model

[0004] In order to solve the problems that the existing electric wall-mounted boilers have single functions and cannot realize the real-time monitoring of the working state and fault feedback of the electric wall-mounted boiler, which affects the user experience, the utility model designs an electric wall-mounted boiler controller circuit.

[0005] The utility model is realized by the following scheme: An electric wall-mounted boiler controller circuit includes a main control circuit and a communication module. The main control circuit is connected to the communication module. The communication module is connected to a WIFI module, and the WIFI module is used to connect to a client.

[0006] For the electric wall-mounted boiler controller circuit as described above, the communication module includes a communication circuit. The communication circuit 201 includes a communication chip IC7 for processing data. The communication circuit further includes a first transient suppression diode connected to the A port of the communication chip IC7 and a second transient suppression diode connected to the B port of the communication chip IC7.

[0007] For the electric wall-mounted boiler controller circuit as described above, the communication module includes a status display circuit connected to the main control circuit. The status display circuit includes a first triode and a first light-emitting diode connected to the DI port of the communication chip IC7. The base of the first triode is connected to the port of the communication chip IC7 and to the main control circuit. The emitter of the first triode is connected to the positive pole of the first light-emitting diode. The status display circuit further includes a second triode and a second light-emitting diode connected to the RO port of the communication chip IC7. The base of the second triode is connected to the port of the communication chip IC7 and to the main control circuit. The emitter of the second triode is connected to the positive pole of the second light-emitting diode.

[0008] For the electric wall-mounted boiler controller circuit described above, the first end of a first patch fuse is connected to the port of communication chip IC7A, and the first end of a second patch fuse is connected to the port of communication chip IC7B. A first resistor is connected between the second end of the first patch fuse and the second end of the second patch fuse.

[0009] For the electric wall-mounted boiler controller circuit described above, it includes a power supply circuit for system power supply. The power supply circuit includes a first step-down circuit and a second step-down circuit. The first step-down circuit includes a common-mode inductor L1. The secondary coil of the common-mode inductor L1 is connected to a rectifier bridge D2. The rectifier bridge D2 is connected to a transformer T1. One end of the first primary coil of the transformer T1 is connected to a PWM converter IC1.

[0010] For the electric wall-mounted boiler controller circuit described above, the second step-down circuit includes a DC step-down chip VR2. The OUTPUT port of the DC step-down chip VR2 is connected to an inductor L2. The first end of the inductor L2 is connected to the negative electrode of a diode D1. The second end of the inductor L2 is grounded through an electrolytic capacitor EC1, a resistor R3, and a capacitor C4 respectively.

[0011] For the electric wall-mounted boiler controller circuit described above, it includes a drive circuit connected to the main control circuit. The drive circuit is connected to multiple heating tube circuits. The heating tube circuits are used to control the heating element to generate heat. The heating tube circuits include heating tube relays and terminals.

[0012] For the electric wall-mounted boiler controller circuit described above, it includes a leakage management circuit connected to the main control circuit. The leakage management circuit includes a leakage protection switch chip IC6. The IN port of the leakage protection switch chip IC6 is connected to a leakage output terminal. The leakage output terminal is connected to a capacitor C30 and a resistor R19. The capacitor C30 and the resistor R19 are respectively connected in parallel to the leakage output terminal.

[0013] Compared with the prior art, the beneficial effects of this technical solution are:

[0014] In the embodiment of the present utility model, by connecting the main control circuit with the communication circuit, and at the same time connecting the communication circuit with the WIFI module, the WIFI module is used to connect with the client, so that the client can receive the working state data from the electric wall-mounted boiler controller circuit, realizing centralized data collection for fault feedback, and also facilitating the user to remotely understand the working state of the electric wall-mounted boiler controller. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 is the circuit principle block diagram of the electric wall-mounted boiler controller;

[0017] Figure 2 is the communication circuit schematic diagram of the electric wall-mounted boiler controller;

[0018] Figure 3 is the drive circuit schematic diagram of the electric wall-mounted boiler controller;

[0019] Figure 4 is the power supply circuit schematic diagram of the electric wall-mounted boiler controller;

[0020] Figure 5 is the leakage management circuit schematic diagram of the electric wall-mounted boiler controller;

[0021] Figure 6 is the detection circuit schematic diagram of the electric wall-mounted boiler controller. Specific Embodiments

[0022] The First Embodiment:

[0023] As Figure 1 shown, this embodiment provides an electric wall-mounted boiler controller circuit, including a main control circuit 1 and a communication module 2. The main control circuit 1 is connected to the communication module 2, and the communication module 2 is connected to a WIFI module. The WIFI module is used to connect to a client. The communication module 2 further includes a communication circuit 201 and a status display circuit 202. To provide a matching voltage for the system, the electric wall-mounted boiler controller circuit further includes a power supply circuit 4 for supplying power to the system. The power supply circuit 4 includes a first step-down circuit 401 and a second step-down circuit. The first step-down circuit 401 steps down the input voltage of 220V to 24V, and then the second step-down circuit 402 steps down the 24V voltage output by the first step-down circuit 401 to 5V to supply power to the main control circuit 1. By connecting the main control circuit to the communication circuit and connecting the communication circuit to the WIFI module in the embodiments of the present invention, and the WIFI module is used to connect to the client, the client can receive the working status data from the electric wall-mounted boiler controller circuit, realizing centralized data collection for fault feedback and facilitating the user to remotely understand the working status of the electric wall-mounted boiler controller.

[0024] The Second Embodiment

[0025] As Figures 2 to 6As shown in the figure, this embodiment provides another electric wall-mounted boiler controller circuit, which includes a main control circuit 1 and a communication module 2. The main control circuit 1 is connected to the communication module 2, and the communication module 2 is connected to a WIFI module, and the WIFI module is used to connect to a client. In the embodiment of the present utility model, by connecting the main control circuit to the communication circuit, and at the same time connecting the communication circuit to the WIFI module, and the WIFI module is used to connect to the client, the client can receive the working state data from the electric wall-mounted boiler controller circuit, realizing centralized data collection for fault feedback, and also facilitating the user to remotely understand the working state of the electric wall-mounted boiler controller.

[0026] Further, in order to make the circuit immune to overstress, the communication module 2 includes a communication circuit 201. The communication circuit 201 includes a communication chip IC7 for processing data. The communication circuit 201 also includes a first transient suppression diode connected to the A port of the communication chip IC7 and a second transient suppression diode connected to the B port of the communication chip IC7. One end of the first transient suppression diode and one end of the second transient suppression diode are commonly connected to the ground terminal. Since the transient suppression diode can suppress electrical transients caused by electrostatic discharge, inductive switching, lightning strikes, etc., connecting the transient suppression diode in series in the circuit can effectively avoid the influence of electrical overstress on the system and improve the anti-interference ability and reliability of the system.

[0027] As a specific solution rather than a limitation, please refer to Figure 2 As shown in the figure, in order to enable the communication module 2 to know its working state through the indicator light when sending and receiving signals, the communication module 2 includes a status display circuit 202 connected to the main control circuit 1. The status display circuit 202 includes a first triode and a first light-emitting diode connected to the DI port of the communication chip IC7. The base of the first triode is connected to the port of the communication chip IC7 and is connected to the main control circuit 1. The emitter of the first triode is connected to the positive pole of the first light-emitting diode. The status display circuit 202 also includes a second triode and a second light-emitting diode connected to the RO port of the communication chip IC7. The base of the second triode is connected to the port of the communication chip IC7 and is connected to the main control circuit 1. The emitter of the second triode is connected to the positive pole of the second light-emitting diode. Preferably, both the first triode and the second triode are PNP-type triodes. When the base input of the PNP-type triode is at a low level, the PNP-type triode conducts and the light-emitting diode lights up. According to the lighting of the diode, the working state of the communication circuit 2 can be known.

[0028] Further, to improve the safety of the circuit system, the first end of a first surface mount fuse is connected to the port of the communication chip IC7A, and the first end of a second surface mount fuse is connected to the port of the communication chip IC7B. A first resistor is connected between the second end of the first surface mount fuse and the second end of the second surface mount fuse. The surface mount fuse plays a role in overcurrent protection.

[0029] Further, to enable the system to communicate with the client, the communication circuit 201 is connected to a data transmission module 203. The data transmission module 203 includes a CO detection module connected to the port of the communication chip IC7A and a WIFI module connected to the port of the communication chip IC7B. After using the communication circuit, due to the characteristics of the communication chip IC7 on the communication circuit 201, such as fast transmission rate and strong signal anti-interference ability, the data transmission rate between the WIFI module connected to the communication circuit 201 and the client is faster and more stable.

[0030] As a specific solution rather than a limitation, please refer to Figure 4 As shown, it includes a power supply circuit 4 for system power supply. The power supply circuit 4 includes a first step-down circuit 401 and a second step-down circuit 402. The first step-down circuit includes a common mode inductor L1. The secondary coil of the common mode inductor L1 is connected to a rectifier bridge D2. The rectifier bridge D2 is connected to a transformer T1. One end of the first primary coil of the transformer T1 is connected to a PWM converter IC1. Preferably, the common mode inductor L1 adopts a common mode inductor with the model QLH-UU98-45B. The first end of the common mode inductor L1 is connected to a capacitor C1, and its output end is connected in parallel with a resistor circuit and a capacitor C26. The resistor circuit includes R1 and R2 connected in series. The rectifier bridge D2 with the model DB107S is connected to the secondary coil of the common mode inductor L1. The secondary coil of the common mode inductor L1 is connected to one end of the first primary coil of the transformer T1, and a capacitor C3 is also connected to the circuit. One end of the first primary coil of the transformer T1 is connected to a PWM converter IC1 with the model PN8137. The VDD terminal of IC1 is connected to the second primary coil of the transformer T1 through a diode D4 and an R7 to achieve the power-taking function. The secondary coil of the transformer T1 outputs a first DC voltage through a diode D2.

[0031] Further, to achieve secondary voltage step-down of the circuit, the second step-down circuit 402 includes a DC step-down chip VR2. The OUTPUT port of the DC step-down chip VR2 is connected to an inductor L2. The first end of the inductor L2 is connected to the negative electrode of a diode D1. The second end of the inductor L2 is grounded through an electrolytic capacitor EC1, a resistor R3, and a capacitor C4 respectively.

[0032] As a specific solution rather than a limitation, please refer to Figure 3As shown, it includes a driving circuit 3 connected to the main control circuit 1. The driving circuit 3 is connected to a plurality of heating tube circuits 5. The heating tube circuits 5 are used to control the heating elements to generate heat. The heating tube circuit includes a heating tube relay and terminals.

[0033] A water pump control circuit 6 is also connected to the main control circuit 1. The water pump control circuit 6 includes a water pump control relay, and the base of the triode Q2 is connected to the main control circuit 1, and its collector is connected to the relay. Preferably, the triode Q2 is an NPN-type triode. When the input of the base is at a high level, the triode Q2 conducts, and similarly, the water pump relay conducts, and the water pump starts to work.

[0034] Furthermore, in order to ensure the safety of the system, the electric wall-mounted boiler controller circuit includes a leakage management circuit 7 connected to the main control circuit 1. The leakage management circuit 7 includes a leakage protection switch chip IC6. The IN port of the leakage protection switch chip IC6 is connected to a leakage output terminal. The leakage output terminal is connected to a capacitor C30 and a resistor R19. The capacitor C30 and the resistor R19 are respectively connected in parallel to the leakage output terminal.

[0035] The principle of the present utility model is as follows: This system has a system shutdown state and a heating working state. When the system is in the shutdown state, all outputs stop, and all heating requests are stopped except for the antifreeze and anti-sticking functions. When the system is in the heating working state, the system will control the heating with reference to the heating water temperature set on the user panel. The temperature detection of the heating water is detected by the water temperature probe on the detection circuit 8, and the heating function is determined according to the difference between the set temperature and the actual temperature. This control is judged and controlled by the main control circuit 1. The detected water temperature, water level and other parameters can be transmitted to the client through the WIFI module, and the client can also control the system.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An electric wall-mounted boiler controller circuit, characterized in that, It includes a main control circuit (1) and a communication module (2). The main control circuit (1) is connected to the communication module (2). The communication module (2) is connected to a WIFI module, and the WIFI module is used to connect to a client.

2. The electric wall-mounted boiler controller circuit according to claim 1, characterized in that The communication module (2) includes a communication circuit (201). The communication circuit (201) includes a communication chip IC7 for processing data. The communication circuit (201) also includes a first transient suppression diode connected to the A port of the communication chip IC7 and a second transient suppression diode connected to the B port of the communication chip IC7.

3. The electric wall-mounted boiler controller circuit according to claim 2, characterized in that, The communication module (2) includes a status display circuit (202) connected to the main control circuit (1). The status display circuit (202) includes a first triode and a first light-emitting diode connected to the DI port of the communication chip IC7. The base of the first triode is connected to the port of the communication chip IC7 and to the main control circuit (1). The emitter of the first triode is connected to the positive pole of the first light-emitting diode. The status display circuit (202) also includes a second triode and a second light-emitting diode connected to the RO port of the communication chip IC7. The base of the second triode is connected to the port of the communication chip IC7 and to the main control circuit (1). The emitter of the second triode is connected to the positive pole of the second light-emitting diode.

4. The electric wall-mounted boiler controller circuit according to claim 2, characterized in that, The A port of the communication chip IC7 is connected to the first end of a first surface mount fuse. The B port of the communication chip IC7 is connected to the first end of a second surface mount fuse. A first resistor is connected between the second end of the first surface mount fuse and the second end of the second surface mount fuse.

5. The electric wall-mounted boiler controller circuit according to claim 1, characterized in that It includes a power supply circuit (4) for system power supply. The power supply circuit (4) includes a first buck circuit (401) and a second buck circuit (402). The first buck circuit includes a common mode inductor L1. The secondary coil of the common mode inductor L1 is connected to a rectifier bridge D2. The rectifier bridge D2 is connected to a transformer T1. One end of the first primary coil of the transformer T1 is connected to a PWM converter IC1.

6. The electric wall-mounted boiler controller circuit according to claim 5, characterized in that The second buck circuit (402) includes a DC buck chip VR2. The OUTPUT port of the DC buck chip VR2 is connected to an inductor L2. The first end of the inductor L2 is connected to the negative pole of a diode D1. The second end of the inductor L2 is grounded through an electrolytic capacitor EC1, a resistor R3, and a capacitor C4 respectively.

7. The electric wall-mounted boiler controller circuit according to claim 1, wherein It includes a drive circuit (3) connected to the main control circuit (1). The drive circuit (3) is connected to a plurality of heating tube circuits (5). The heating tube circuits (5) are used to control a heating element to generate heat. The heating tube circuit includes a heating tube relay and a terminal.

8. The electric wall-mounted boiler controller circuit according to claim 1, characterized in that, It includes a leakage management circuit (7) connected to the main control circuit (1). The leakage management circuit (7) includes a leakage protection switch chip IC6. The IN port of the leakage protection switch chip IC6 is connected to a leakage output terminal. The leakage output terminal is connected to a capacitor C30 and a resistor R19. The capacitor C30 and the resistor R19 are respectively connected in parallel to the leakage output terminal.

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