Wall-hanging stove temperature control system

Abstract

The utility model discloses a wall-hanging stove temperature control system, which relates to the technical field of wall-hanging stoves and comprises a power supply module used for supplying power; the temperature detection module is used for detecting the temperature of the discharged water; the signal transmission control module is used for setting a temperature threshold value, transmitting the received temperature signal to the temperature change detection module when the temperature signal is greater than the temperature threshold value, performing subtraction processing on the suddenly-changed temperature signal and the maintained temperature signal when the temperature is suddenly changed, and transmitting the suddenly-changed temperature signal to the temperature change detection module when the subtraction processing signal is greater than the set change threshold value; controlling an infrared emission module to emit an infrared signal; and the infrared receiving module is used for receiving the infrared signal and controlling the power supply control module to stop supplying power to the wall-hanging stove heating control module so as to stop heating work. According to the wall-hanging stove temperature control system, on the premise that the water temperature of discharged water exceeds a certain value, after the temperature suddenly changes, water heating work is stopped, scalding accidents are avoided, and the safety of a wall-hanging stove is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wall-mounted boilers, in particular to a temperature control system for a wall-mounted boiler. Background Art

[0002] A wall-mounted boiler, also known as a gas wall-mounted boiler, is a household heating device that uses natural gas as fuel. It can provide a large flow of constant temperature sanitary hot water for use in home bathing, kitchens and other places. It is economical and practical. The heating temperature of existing wall-mounted boilers can be manually adjusted and controlled, and water can be discharged through faucets and other water outlets and adjusted by mixing cold and hot water to meet the hot water supply. However, since faucets and other water outlets cannot be wirelessly controlled with wall-mounted boilers, users may accidentally touch the faucet switch, resulting in the hot water provided by faucets and other devices for a short time being hot, which can easily cause scalds to users. There are certain safety hazards, and this needs to be improved. Utility Model Content

[0003] The embodiment of the utility model provides a wall-mounted boiler temperature control system to solve the problems raised in the above background technology.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A wall-mounted boiler temperature control system, comprising: a power supply module, a temperature detection module, a signal transmission control module, a temperature change detection module, an infrared transmitting module, an infrared receiving module, a power supply control module and a wall-mounted boiler heating control module;

[0006] A power module is used to receive AC power and perform rectification, filtering and voltage stabilization on the AC power;

[0007] A temperature detection module, connected to the power module, for detecting the temperature of the discharged water and outputting a temperature signal;

[0008] a signal transmission control module, connected to the temperature detection module and the temperature change detection module, for setting a temperature threshold and transmitting the received temperature signal to the temperature change detection module when the temperature signal is greater than the temperature threshold;

[0009] a temperature change detection module, connected to the power supply module, for receiving the temperature signal transmitted by the signal transmission control module and maintaining the signal, for subtracting the temperature signal after the sudden change from the maintained temperature signal when the temperature suddenly changes, for setting a change threshold and outputting a first control signal when the signal after the subtraction process is greater than the change threshold;

[0010] An infrared transmitting module, connected to the temperature change detection module and the power supply module, and configured to receive a first control signal and transmit an infrared signal;

[0011] An infrared receiving module, used for receiving infrared signals, amplifying the signals and outputting a second control signal;

[0012] A power supply control module, connected to the power supply module, the infrared receiving module and the wall-mounted boiler heating control module, for transmitting the AC power connected to the power supply module to the wall-mounted boiler heating control module, and for receiving a second control signal and stopping the transmission of power;

[0013] The wall-mounted boiler heating control module is used to receive the electric energy transmitted by the power supply control module and perform heating work.

[0014] As a further solution of the utility model: the power supply module includes a power supply interface, a first transformer, a first rectifier, a first capacitor and a first voltage regulator tube; the power supply control module includes a first fuse and a first relay switch; the wall-mounted boiler heating control module includes a wall-mounted boiler heating device;

[0015] Preferably, the first end of the power interface is connected to the first end of the primary side of the first transformer and is connected to the fixed end of the first relay switch through the first fuse, the second end of the power interface is connected to the second end of the primary side of the first transformer and the first end of the wall-mounted boiler heating device, the moving end of the first relay switch is connected to the second end of the wall-mounted boiler heating device, the first end and the second end of the secondary side of the first transformer are respectively connected to the first end and the third end of the first rectifier, the second end of the first rectifier is connected to the cathode of the first voltage regulator tube and is connected to the anode of the first voltage regulator tube, the fourth end of the first rectifier and the ground through the first capacitor.

[0016] As a further solution of the utility model: the temperature detection module includes a first temperature sensor and a first resistor; the signal transmission control module includes a fourteenth resistor, a second potentiometer, a fifteenth resistor, a second comparator and a first analog switch;

[0017] Preferably, one end of the first temperature sensor is connected to one end of the fourteenth resistor and the cathode of the first voltage regulator, the other end of the first temperature sensor is connected to the in-phase end of the second comparator and the IN end of the first analog switch and is grounded through the first resistor, the inverting end of the first comparator is connected to the slider end of the second potentiometer, the other end of the fourteenth resistor is connected to one end of the second potentiometer, the other end of the second potentiometer is grounded through the fifteenth resistor, the output end of the second comparator is connected to the CTRL end of the first analog switch, and the OUT end of the first analog switch is connected to the temperature change detection module.

[0018] As a further solution of the utility model: the temperature change detection module includes a first operational amplifier, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second capacitor, a sixth resistor, a seventh resistor, an eighth resistor, a first potentiometer and a first comparator;

[0019] Preferably, the in-phase end of the first operational amplifier is connected to one end of the second resistor and is grounded through a fifth resistor, the inverting end of the first operational amplifier is connected to one end of the fourth resistor and is connected to one end of the second capacitor and the cathode of the first diode through a third resistor, the anode of the first diode is connected to the other end of the second resistor and the OUT end of the first analog switch, the output end of the first operational amplifier is connected to the other end of the fourth resistor and is connected to the in-phase end of the first comparator through a sixth resistor, the inverting end of the first comparator is connected to the slider end of the first potentiometer, one end of the first potentiometer is connected to the cathode of the first voltage regulator through a seventh resistor, the other end of the first potentiometer is grounded through an eighth resistor, the other end of the second capacitor is grounded, and the output end of the first comparator is connected to the infrared transmitting module.

[0020] As a further solution of the utility model: the infrared emission module includes a ninth resistor, a third capacitor, a first switch tube, a tenth resistor and an infrared emitter;

[0021] Preferably, the base of the first switching tube is connected to one end of the third capacitor and is connected to the output end of the first comparator through a ninth resistor, the emitter of the first switching tube and the other end of the third capacitor are both grounded, the collector of the first switching tube is connected to one end of the infrared emitter through a tenth resistor, and the other end of the infrared emitter is connected to the cathode of the first voltage regulator tube.

[0022] As a further solution of the utility model: the infrared receiving module includes an infrared receiving device, a second switch tube, a third switch tube, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a first power supply; the power supply control module also includes a sixteenth resistor, a fourth switch tube and a first relay;

[0023] Preferably, one end of the infrared receiving device is connected to the base of the second switching tube, the emitter of the second switching tube is connected to the first power supply and one end of the first relay and is connected to the collector of the third switching tube and one end of the sixteenth resistor through the twelfth resistor, the other end of the sixteenth resistor is connected to the base of the fourth switching tube, the base of the third switching tube is connected to the collector of the second switching tube and is grounded through the eleventh resistor, the emitter of the third switching tube is grounded through the thirteenth resistor, the emitter of the fourth switching tube and the other end of the infrared receiving device are both grounded, and the collector of the fourth switching tube is connected to the other end of the first relay.

[0024] Compared with the prior art, the beneficial effects of the utility model are as follows: the temperature control system of the wall-mounted boiler of the utility model detects the water temperature of the discharged water by the temperature detection module, and after the water temperature exceeds the set temperature threshold, the signal transmission control module performs signal transmission work, so that the temperature change detection module detects whether the temperature suddenly changes and when the degree of the temperature sudden change is greater than the set change threshold, the infrared transmission module will emit an infrared signal, so that after the infrared receiving module receives the infrared signal, the power supply control module is controlled to disconnect the power supply to the hanging fireplace heating control module, so that the fireplace heating control module stops heating water, avoids the occurrence of scalding incidents, and improves the safety of the wall-mounted boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The present invention provides a schematic block diagram of a temperature control system for a wall-mounted boiler.

[0027] Figure 2 A circuit diagram of a wall-mounted boiler temperature control system provided in an example of the utility model.

[0028] Figure 3 This is a connection circuit diagram of the infrared receiving module and the power supply control module provided in the example of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] In one embodiment, see Figure 1 , a wall-mounted boiler temperature control system, comprising: a power supply module 1, a temperature detection module 2, a signal transmission control module 3, a temperature change detection module 4, an infrared transmitting module 5, an infrared receiving module 6, a power supply control module 7 and a wall-mounted boiler heating control module 8;

[0031] Specifically, the power module 1 is used to receive AC power and perform rectification, filtering and voltage stabilization on the AC power;

[0032] A temperature detection module 2, connected to the power module 1, for detecting the temperature of the discharged water and outputting a temperature signal;

[0033] A signal transmission control module 3, connected to the temperature detection module 2 and the temperature change detection module 4, for setting a temperature threshold and transmitting the received temperature signal to the temperature change detection module 4 when the temperature signal is greater than the temperature threshold;

[0034] The temperature change detection module 4 is connected to the power supply module 1, and is used to receive the temperature signal transmitted by the signal transmission control module 3 and maintain the signal, and is used to subtract the temperature signal after the sudden change from the maintained temperature signal when the temperature suddenly changes, and is used to set a change threshold and output a first control signal when the signal after the subtraction process is greater than the change threshold;

[0035] An infrared transmitting module 5, connected to the temperature change detecting module 4 and the power supply module 1, for receiving a first control signal and transmitting an infrared signal;

[0036] Infrared receiving module 6, used for receiving infrared signals, amplifying the signals and outputting second control signals;

[0037] The power supply control module 7 is connected to the power supply module 1, the infrared receiving module 6 and the wall-mounted boiler heating control module 8, and is used to transmit the AC power received by the power supply module 1 to the wall-mounted boiler heating control module 8, and is used to receive the second control signal and stop the transmission of power;

[0038] The wall-mounted boiler heating control module 8 is used to receive the electric energy transmitted by the power supply control module 7 and perform heating work.

[0039] In a specific embodiment, the power supply module 1 can adopt a power supply circuit composed of a power supply interface, a transformer, a rectifier, etc., can be connected to AC power and rectify, filter and stabilize the AC power. The connected AC power supplies the wall-mounted boiler heating control module 8 through the power supply control module 7, and the power after voltage stabilization supplies power to the temperature detection module 2, the signal transmission control module 3, the temperature change detection module 4 and the infrared emission module 5; the temperature detection module 2 can adopt a temperature detection circuit composed of a temperature sensor and a resistor to detect the water temperature of the discharged water, and the discharged water can be discharged from the faucet; the signal transmission control module 3 can adopt a signal transmission control circuit composed of a comparator, an analog switch, a resistor, etc., can set a temperature threshold, and after the detected temperature signal is greater than the temperature threshold, the detected temperature signal is transmitted to the temperature change detection module 4, and the temperature threshold can be selected as the voltage value output by the temperature detection module 2 at normal temperature; The temperature change detection module 4 can adopt a temperature change detection circuit composed of a diode, a capacitor, an operational amplifier, a comparator, etc., which can detect temperature mutations and obtain the degree of temperature mutations, and control the operation of the infrared emission module 5 after the degree of temperature mutation is greater than the set change threshold. The change threshold can be set according to the needs of the user and is not limited here; the infrared emission module 5 can adopt an infrared emission circuit composed of a triode, an infrared transmitter Q1, etc., which can emit infrared signals; the infrared receiving module 6 can adopt an infrared receiving circuit composed of an infrared receiving device Q2, a triode, a resistor, etc., which can receive infrared signals and amplify the infrared signals; the power supply control module 7 can adopt a power supply control circuit composed of a triode, a relay, etc., which can transmit and control power off of electric energy; the wall-mounted boiler heating control module 8 can adopt a wall-mounted boiler heating control circuit composed of a wall-mounted boiler heating device to perform water heating.

[0040] In another embodiment, see Figure 1 , Figure 2 and Figure 3 The power supply module 1 includes a power supply interface, a first transformer W1, a first rectifier T1, a first capacitor C1 and a first voltage regulator VD1; the power supply control module 7 includes a first fuse FU1 and a first relay switch K1-1; the wall-mounted boiler heating control module 8 includes a wall-mounted boiler heating device;

[0041] Specifically, the first end of the power interface is connected to the first end of the primary side of the first transformer W1 and is connected to the fixed end of the first relay switch K1-1 through the first fuse FU1, the second end of the power interface is connected to the second end of the primary side of the first transformer W1 and the first end of the wall-mounted boiler heating device, the moving end of the first relay switch K1-1 is connected to the second end of the wall-mounted boiler heating device, the first end and the second end of the secondary side of the first transformer W1 are respectively connected to the first end and the third end of the first rectifier T1, the second end of the first rectifier T1 is connected to the cathode of the first voltage regulator tube VD1 and is connected to the anode of the first voltage regulator tube VD1, the fourth end of the first rectifier T1 and the ground end through the first capacitor C1.

[0042] In a specific embodiment, the first relay switch K1-1 can be a normally closed switch; the wall-mounted boiler heating device can be composed of a controller, a heater and other devices to perform water heating.

[0043] Further, the temperature detection module 2 includes a first temperature sensor NTC and a first resistor R1; the signal transmission control module 3 includes a fourteenth resistor R14, a second potentiometer RP2, a fifteenth resistor R15, a second comparator A2 and a first analog switch IC1;

[0044] Specifically, one end of the first temperature sensor is connected to one end of the fourteenth resistor R14 and the cathode of the first voltage regulator VD1, the other end of the first temperature sensor is connected to the in-phase end of the second comparator A2 and the IN end of the first analog switch IC1 and is grounded through the first resistor R1, the inverting end of the first comparator A1 is connected to the slider end of the second potentiometer RP2, the other end of the fourteenth resistor R14 is connected to one end of the second potentiometer RP2, the other end of the second potentiometer RP2 is grounded through the fifteenth resistor R15, the output end of the second comparator A2 is connected to the CTRL end of the first analog switch IC1, and the OUT end of the first analog switch IC1 is connected to the temperature change detection module 4.

[0045] In a specific embodiment, the first temperature sensor may adopt a thermistor with a negative temperature coefficient, wherein the higher the temperature, the lower the resistance; the second comparator A2 may adopt an LM358 comparator; the fourteenth resistor R14, the second potentiometer RP2 and the fifteenth resistor R15 provide a temperature threshold; the first analog switch IC1 may adopt a CD4066 chip.

[0046] Further, the temperature change detection module 4 includes a first operational amplifier OP1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first diode D1, a second capacitor C2, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a first potentiometer RP1 and a first comparator A1;

[0047] Specifically, the in-phase end of the first operational amplifier OP1 is connected to one end of the second resistor R2 and is grounded through the fifth resistor R5, the inverting end of the first operational amplifier OP1 is connected to one end of the fourth resistor R4 and is connected to one end of the second capacitor C2 and the cathode of the first diode D1 through the third resistor R3, the anode of the first diode D1 is connected to the other end of the second resistor R2 and the OUT end of the first analog switch IC1, the output end of the first operational amplifier OP1 is connected to the other end of the fourth resistor R4 and is connected to the in-phase end of the first comparator A1 through the sixth resistor R6, the inverting end of the first comparator A1 is connected to the slider end of the first potentiometer RP1, one end of the first potentiometer RP1 is connected to the cathode of the first voltage regulator VD1 through the seventh resistor R7, the other end of the first potentiometer RP1 is grounded through the eighth resistor R8, the other end of the second capacitor C2 is grounded, and the output end of the first comparator A1 is connected to the infrared transmitting module 5.

[0048] In a specific embodiment, the first diode D1 and the second capacitor C2 perform signal delay storage and signal retention processing; the first operational amplifier OP1 can select an OP07 operational amplifier, cooperate with the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5 and the sixth resistor R6 to perform subtraction processing on the input signal, so as to obtain the degree of temperature mutation; the first comparator A1 can select an LM358 comparator, cooperate with the seventh resistor R7, the first potentiometer RP1 and the eighth resistor R8 to provide a change threshold for change degree detection, so as to control the operation of the infrared emission module 5 when the temperature suddenly changes.

[0049] Furthermore, the infrared emitting module 5 includes a ninth resistor R9, a third capacitor C3, a first switch tube VT1, a tenth resistor R10 and an infrared emitter Q1;

[0050] Specifically, the base of the first switching tube VT1 is connected to one end of the third capacitor C3 and is connected to the output end of the first comparator A1 through the ninth resistor R9, the emitter of the first switching tube VT1 and the other end of the third capacitor C3 are both grounded, the collector of the first switching tube VT1 is connected to one end of the infrared emitter Q1 through the tenth resistor R10, and the other end of the infrared emitter Q1 is connected to the cathode of the first voltage regulator tube VD1.

[0051] In a specific embodiment, the first switch tube VT1 may be an NPN transistor; the infrared transmitter Q1 may be composed of an infrared light emitting diode to emit infrared signals.

[0052] Furthermore, the infrared receiving module 6 includes an infrared receiving device Q2, a second switch tube VT2, a third switch tube VT3, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13 and a first power supply VCC1; the power supply control module 7 also includes a sixteenth resistor R16, a fourth switch tube VT4 and a first relay K1;

[0053] Specifically, one end of the infrared receiving device Q2 is connected to the base of the second switching tube VT2, the emitter of the second switching tube VT2 is connected to the first power supply VCC1 and one end of the first relay K1 and is connected to the collector of the third switching tube VT3 and one end of the sixteenth resistor R16 through the twelfth resistor R12, the other end of the sixteenth resistor R16 is connected to the base of the fourth switching tube VT4, the base of the third switching tube VT3 is connected to the collector of the second switching tube VT2 and is grounded through the eleventh resistor R11, the emitter of the third switching tube VT3 is grounded through the thirteenth resistor R13, the emitter of the fourth switching tube VT4 and the other end of the infrared receiving device Q2 are both grounded, and the collector of the fourth switching tube VT4 is connected to the other end of the first relay K1.

[0054] In a specific embodiment, the infrared receiving device Q2 can be composed of an infrared receiving transistor to receive infrared signals; the second switch tube VT2 can be a PNP transistor, and the third switch tube VT3 can be an NPN transistor, cooperating with the first power supply VCC1, the eleventh resistor R11, the twelfth resistor R12 and the thirteenth resistor R13 to perform signal amplification processing; the fourth switch tube VT4 can be an NPN transistor; the first relay K1 controls the disconnection of the first relay switch K1-1 by magnetic attraction.

[0055] In a wall-mounted boiler temperature control system of the present embodiment, AC power is connected to the power interface, and the wall-mounted boiler heating device is powered by the first fuse FU1 and the first relay switch K1-1. At the same time, the AC power is transformed, rectified, filtered and stabilized by the first transformer W1, the first rectifier T1, the first capacitor C1 and the first voltage regulator VD1. The first temperature sensor measures the water temperature of the water discharged from the faucet, and after the water temperature is greater than the temperature threshold set by the fourteenth resistor R14, the second potentiometer RP2 and the fifteenth resistor R15, the second comparator A2 outputs a high level and controls the IN terminal and the OUT terminal of the first analog switch IC1 to be turned on, so that the detected temperature signal is transmitted through the first analog switch IC1, the second capacitor C2 stores and holds the signal, and the first operational amplifier OP1 cooperates with the second operational amplifier OP2 to generate a high level signal. The resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 perform subtraction processing on the input signal. When the detected temperature suddenly changes and the voltage value output by the first operational amplifier OP1 is greater than the change threshold set by the seventh resistor R7, the first potentiometer RP1 and the eighth resistor R8, it means that the water temperature suddenly changes greatly at this time, and the first switch tube VT1 will be controlled to be turned on, the infrared transmitter Q1 will transmit an infrared signal, and the infrared receiving device Q2 will receive the infrared signal and turn on, the second switch tube VT2, the third switch tube VT3 and the fourth switch tube VT4 will all be turned on, so that the first relay K1 is energized and the first relay switch K1-1 is controlled to be disconnected, and the wall-mounted boiler heating device will stop heating. The temperature threshold and the change threshold can be adjusted by the resistance values ​​of the second potentiometer RP2 and the first potentiometer RP1 respectively.

[0056] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0057] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A wall-mounted boiler temperature control system, characterized in that: The wall-mounted boiler temperature control system includes: a power supply module, a temperature detection module, a signal transmission control module, a temperature change detection module, an infrared transmitting module, an infrared receiving module, a power supply control module and a wall-mounted boiler heating control module; The power module is used to receive AC power and perform rectification, filtering and voltage stabilization on the AC power; The temperature detection module is connected to the power module and is used to detect the temperature of the discharged water and output a temperature signal; The signal transmission control module is connected to the temperature detection module and the temperature change detection module, and is used to set a temperature threshold and transmit the received temperature signal to the temperature change detection module when the temperature signal is greater than the temperature threshold; The temperature change detection module is connected to the power supply module, and is used to receive the temperature signal transmitted by the signal transmission control module and maintain the signal, and is used to subtract the temperature signal after the sudden change from the maintained temperature signal when the temperature suddenly changes, and is used to set a change threshold and output a first control signal when the signal after the subtraction process is greater than the change threshold; The infrared transmitting module is connected to the temperature change detecting module and the power supply module, and is used to receive the first control signal and transmit an infrared signal; The infrared receiving module is used to receive infrared signals, amplify the signals and output a second control signal; The power supply control module is connected to the power supply module, the infrared receiving module and the wall-mounted boiler heating control module, and is used to transmit the AC power connected to the power supply module to the wall-mounted boiler heating control module, and is used to receive the second control signal and stop the transmission of power; The wall-mounted boiler heating control module is used to receive the electric energy transmitted by the power supply control module and perform heating work.

2. A wall-mounted boiler temperature control system according to claim 1, characterized in that: The power supply module includes a power supply interface, a first transformer, a first rectifier, a first capacitor and a first voltage regulator tube; the power supply control module includes a first fuse and a first relay switch; the wall-mounted boiler heating control module includes a wall-mounted boiler heating device; The first end of the power interface is connected to the first end of the primary side of the first transformer and is connected to the fixed end of the first relay switch through the first fuse. The second end of the power interface is connected to the second end of the primary side of the first transformer and the first end of the wall-mounted boiler heating device. The moving end of the first relay switch is connected to the second end of the wall-mounted boiler heating device. The first end and the second end of the secondary side of the first transformer are respectively connected to the first end and the third end of the first rectifier. The second end of the first rectifier is connected to the cathode of the first voltage regulator tube and is connected to the anode of the first voltage regulator tube, the fourth end of the first rectifier and the ground through the first capacitor.

3. A wall-mounted boiler temperature control system according to claim 2, characterized in that: The temperature detection module includes a first temperature sensor and a first resistor; the signal transmission control module includes a fourteenth resistor, a second potentiometer, a fifteenth resistor, a second comparator and a first analog switch; One end of the first temperature sensor is connected to one end of the fourteenth resistor and the cathode of the first voltage regulator, the other end of the first temperature sensor is connected to the in-phase end of the second comparator and the IN end of the first analog switch and is grounded through the first resistor, the inverting end of the first comparator is connected to the slider end of the second potentiometer, the other end of the fourteenth resistor is connected to one end of the second potentiometer, the other end of the second potentiometer is grounded through the fifteenth resistor, the output end of the second comparator is connected to the CTRL end of the first analog switch, and the OUT end of the first analog switch is connected to the temperature change detection module.

4. A wall-mounted boiler temperature control system according to claim 3, characterized in that: The temperature change detection module includes a first operational amplifier, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first diode, a second capacitor, a sixth resistor, a seventh resistor, an eighth resistor, a first potentiometer and a first comparator; The in-phase end of the first operational amplifier is connected to one end of the second resistor and is grounded through the fifth resistor, the inverting end of the first operational amplifier is connected to one end of the fourth resistor and is connected to one end of the second capacitor and the cathode of the first diode through the third resistor, the anode of the first diode is connected to the other end of the second resistor and the OUT end of the first analog switch, the output end of the first operational amplifier is connected to the other end of the fourth resistor and is connected to the in-phase end of the first comparator through the sixth resistor, the inverting end of the first comparator is connected to the slider end of the first potentiometer, one end of the first potentiometer is connected to the cathode of the first voltage regulator tube through the seventh resistor, the other end of the first potentiometer is grounded through the eighth resistor, the other end of the second capacitor is grounded, and the output end of the first comparator is connected to the infrared transmitting module.

5. A wall-mounted boiler temperature control system according to claim 4, characterized in that: The infrared emission module includes a ninth resistor, a third capacitor, a first switch tube, a tenth resistor and an infrared emitter; The base of the first switching tube is connected to one end of the third capacitor and is connected to the output end of the first comparator through a ninth resistor, the emitter of the first switching tube and the other end of the third capacitor are both grounded, the collector of the first switching tube is connected to one end of the infrared emitter through a tenth resistor, and the other end of the infrared emitter is connected to the cathode of the first voltage regulator tube.

6. A wall-mounted boiler temperature control system according to claim 5, characterized in that: The infrared receiving module includes an infrared receiving device, a second switch tube, a third switch tube, an eleventh resistor, a twelfth resistor, a thirteenth resistor and a first power supply; the power supply control module also includes a sixteenth resistor, a fourth switch tube and a first relay; One end of the infrared receiving device is connected to the base of the second switching tube, the emitter of the second switching tube is connected to the first power supply and one end of the first relay and is connected to the collector of the third switching tube and one end of the sixteenth resistor through the twelfth resistor, the other end of the sixteenth resistor is connected to the base of the fourth switching tube, the base of the third switching tube is connected to the collector of the second switching tube and is grounded through the eleventh resistor, the emitter of the third switching tube is grounded through the thirteenth resistor, the emitter of the fourth switching tube and the other end of the infrared receiving device are both grounded, and the collector of the fourth switching tube is connected to the other end of the first relay.

Images