Energy-saving control circuit of commercial electric appliance circuit board
By introducing temperature detection and energy-saving control modules into the circuit boards of commercial appliances, unnecessary power supplies are automatically shut off, solving the problem of overheating caused by multiple modules working simultaneously on the circuit boards of commercial appliances, and achieving improvements in energy saving and safety.
Patent Information
- Application Number
- CN202520127668.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When different control modules in a commercial appliance circuit board are working simultaneously, they are prone to overheating, which leads to increased energy consumption of the components, and existing technologies are unable to effectively solve this problem.
Design an energy-saving control circuit for a commercial electrical circuit board, including a power supply module, a temperature detection module, an energy-saving control module, an over-temperature control module, and a multi-output module. The circuit automatically shuts off unnecessary power supplies through temperature detection and control signals, thereby reducing power consumption.
It effectively reduces the power consumption of commercial electrical circuit boards, avoids component damage caused by excessive temperature, and improves the safety and energy efficiency of circuit boards.
Smart Images
Figure CN223885117U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to commercial electric appliance circuit board technical field, concretely is a kind of energy-saving control circuit of commercial electric appliance circuit board. BACKGROUND
[0002] Commercial electric appliance circuit board is indispensable component in commercial electric appliance, mainly for connecting and supporting electronic components, realize the electrical connection and function realization of electric appliance equipment, commercial electric appliance circuit board in prior art in order to realize a variety of control electric energy, generally by different control module composition, and different control module needs different power supply control, but when all control modules on commercial electric appliance circuit board work simultaneously long-term, the situation of easy occurrence of temperature rise, in turn lead to the electric energy consumption of commercial electric appliance circuit board component increases, and thus there is to be improved. SUMMARY
[0003] The utility model embodiment provides a kind of energy-saving control circuit of commercial electric appliance circuit board, to solve the problem raised in above-mentioned background technology.
[0004] To achieve the above object, the utility model provides the following technical scheme:
[0005] A kind of energy-saving control circuit of commercial electric appliance circuit board, comprising: power module, temperature detection module, energy-saving control module, over-temperature control module, multi-output module and commercial electric appliance module;
[0006] Power module is used to connect AC electric energy and carry out voltage reduction, rectification filtering and multi-stabilized voltage output to AC electric energy, output first electric energy, second electric energy and third electric energy;
[0007] Temperature detection module is connected with the power module, for receiving first electric energy and carrying out temperature detection, when the temperature signal of detection is greater than the temperature threshold value set, output first control signal, when the duration of output first control signal exceeds the timing time set, output second control signal;
[0008] Energy-saving control module is connected with the power module and temperature detection module, for outputting first energy-saving signal or second energy-saving signal when receiving first electric energy and first control signal, outputting third energy-saving signal or fourth energy-saving signal when receiving first electric energy and second control signal;
[0009] Over-temperature control module is connected with the temperature detection module, for outputting first protection signal when temperature signal is greater than the over-temperature threshold value set;
[0010] The multi-output module is connected with the power module, the over-temperature control module, the energy-saving control module and the commercial electric appliance module, and is used for transmitting the first electric energy, the second electric energy and the third electric energy to the commercial electric appliance module, stopping transmission of the second electric energy when the first energy-saving signal, the third energy-saving signal or the first protection signal is received, stopping transmission of the third electric energy when the second energy-saving signal, the fourth energy-saving signal or the first protection signal is received, and stopping transmission of the first electric energy when the first protection signal is received.
[0011] The commercial electric appliance module is used for transmitting the first electric energy, the second electric energy and the third electric energy to the first power supply end, the second power supply end and the third power supply end of the connected commercial electric appliance circuit board.
[0012] As a further scheme of the utility model: the power module includes a power interface, a first transformer, a first rectifier, a first capacitor, a multi-power supply device, a fourth capacitor, a second capacitor and a third capacitor;
[0013] Preferably, the first end and the second end of the power interface are connected with the first end and the second end of the primary side of the first transformer respectively, the first end and the second end of the secondary side of the first transformer are connected with the first end and the second end of the first rectifier respectively, the third end of the first rectifier is connected with the input end of the multi-power supply device and the fourth end of the first rectifier through the first capacitor, the ground end of the multi-power supply device, the first end of the second capacitor, the first end of the third capacitor and the first end of the fourth capacitor, the first output end, the second output end and the third output end of the multi-power supply device are connected with the second end of the second capacitor, the second end of the third capacitor and the second end of the fourth capacitor respectively.
[0014] As a further scheme of the utility model: the multi-output module includes a fifth resistor, a third power tube, a third resistor, a first power tube, a fourth resistor, a second power tube, a first switch tube, a second switch tube and a third switch tube; the commercial electric appliance module includes a commercial electric appliance power interface;
[0015] Preferably, the drain of the third power tube is connected to the first output of the multi-power supply device and the gate of the third power tube is connected to the collector of the third switch tube through the fifth resistor, the drain of the first power tube is connected to the second output of the multi-power supply device and the gate of the first power tube is connected to the collector of the first switch tube through the third resistor, the drain of the second power tube is connected to the third output of the multi-power supply device and the gate of the second power tube is connected to the collector of the second switch tube through the fourth resistor, the source of the third power tube, the source of the first power tube and the source of the second power tube are connected to the first power terminal, the second power terminal and the third power terminal of the commercial electric appliance circuit board interface respectively, the emitter of the first switch tube is connected to the emitter of the second switch tube, the emitter of the third switch tube, the ground terminal of the commercial electric appliance circuit board interface and the ground terminal, the base of the first switch tube and the base of the second switch tube are connected to the energy-saving control module, and the base of the third switch tube is connected to the over-temperature control module.
[0016] As a further scheme of the utility model: the energy-saving control module comprises a first resistor, a second resistor, a first key switch, a second key switch, a third key switch, a first logic chip, a second logic chip, a first diode and a third diode;
[0017] Preferably, one end of the first resistor is connected to the first output of the multi-power supply device and the dynamic end of the second key switch through the second resistor, the static end of the second key switch is connected to the A end of the first logic chip, the other end of the first resistor is connected to the dynamic end of the first key switch, the static end of the first key switch is connected to the A end of the second logic chip, the B end of the first logic chip and the B end of the second logic chip are connected to the temperature detection module, the Y end of the first logic chip is connected to the first dynamic end and the second dynamic end of the third key switch, the Y end of the second logic chip is connected to the third dynamic end and the fourth dynamic end of the third key switch, the first static end and the third static end of the third key switch are connected to the anode of the first diode, the cathode of the first diode is connected to the base of the first switch tube, the second static end and the fourth static end of the third key switch are connected to the anode of the third diode, and the cathode of the third diode is connected to the base of the second switch tube.
[0018] As a further scheme of the utility model: the over-temperature control module comprises a sixth resistor, a fifth diode, a second diode and a fourth diode;
[0019] Preferably, the first end of the sixth resistor is connected to the temperature detection module, the second end of the sixth resistor is connected to the cathode of the fifth diode, the anode of the fifth diode is connected to the anode of the second diode, the anode of the fourth diode and the base of the third switch tube, and the cathode of the second diode and the cathode of the fourth diode are connected to the base of the first switch tube and the base of the second switch tube respectively.
[0020] As a further scheme of the utility model: the temperature detection module includes seventh resistance, eighth resistance, first thermistor, ninth resistance, first comparator, fourth switch tube, tenth resistance, fifth capacitor, eleventh resistance, fifth switch tube and twelfth resistance;
[0021] Preferably, one end of the seventh resistance is connected with the first output end of the multi-path power supply device, the collector of the fourth switch tube and the collector of the fifth switch tube, and is connected with the non-inverting terminal of the first comparator, one end of the ninth resistance and the first end of the sixth resistance through the first thermistor, the other end of the seventh resistance is connected with the inverting terminal of the first comparator and is connected with the ground end of the multi-path power supply device, the other end of the ninth resistance, one end of the tenth resistance, one end of the fifth capacitor, one end of the twelfth resistance and the ground end through the eighth resistance, the output end of the first comparator is connected with the base of the fourth switch tube and the B end of the first logic chip, the emitter of the fourth switch tube is connected with the other end of the tenth resistance and the other end of the fifth capacitor and is connected with the base of the fifth switch tube through the eleventh resistance, the emitter of the fifth switch tube is connected with the other end of the twelfth resistance and the B end of the second logic chip.
[0022] Compared with the prior art, the utility model has the beneficial effects that: the energy-saving control circuit of the utility model can provide multiple power supply voltages for the circuit board of the commercial electric appliance connected with the power module of the commercial electric appliance through the multi-path output module, so as to meet the power required by different functional modules of the circuit board of the commercial electric appliance, and meanwhile, the temperature detection module is used for temperature detection, when the temperature exceeds the set temperature threshold, the selected power that can be turned off can be automatically turned off through the energy-saving control module, then the power consumption of the circuit board of the commercial electric appliance is reduced, the working temperature is reduced, the increase of the power consumption of the circuit board of the commercial electric appliance caused by the excessively high temperature is avoided, and when the temperature is excessively high, the power supply for the circuit board of the commercial electric appliance is stopped, and the safety of the circuit board of the commercial electric appliance is improved. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the technical scheme of the utility model embodiment, the drawings needed to be used in the following description of the utility model embodiment will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creating labor.
[0024] Figure 1 A principle block diagram of the energy-saving control circuit of the circuit board of the commercial electric appliance provided for the utility model example.
[0025] Figure 2 A circuit diagram of the energy-saving control circuit of the circuit board of the commercial electric appliance provided for the utility model example.
[0026] Figure 3The utility model discloses a temperature detection module's connection circuit diagram provided for the utility model example. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0028] In one embodiment, please refer to Figure 1 An energy-saving control circuit of a commercial appliance circuit board, comprising: a power module 1, a temperature detection module 2, an energy-saving control module 3, an over-temperature control module 4, a multi-way output module 5 and a commercial appliance module 6.
[0029] Specifically, the power module 1 is used for connecting AC power and performing voltage reduction, rectification filtering and multi-way voltage stabilization output on the AC power, outputting first power, second power and third power.
[0030] The temperature detection module 2 is connected with the power module 1 and is used for receiving the first power and performing temperature detection, outputting a first control signal when the detected temperature signal is greater than a set temperature threshold, and outputting a second control signal when the duration of the output first control signal exceeds a set timing time.
[0031] The energy-saving control module 3 is connected with the power module 1 and the temperature detection module 2 and is used for outputting a first energy-saving signal or a second energy-saving signal when receiving the first power and the first control signal, and outputting a third energy-saving signal or a fourth energy-saving signal when receiving the first power and the second control signal.
[0032] The over-temperature control module 4 is connected with the temperature detection module 2 and is used for outputting a first protection signal when the temperature signal is greater than a set over-temperature threshold.
[0033] The multi-way output module 5 is connected with the power module 1, the over-temperature control module 4, the energy-saving control module 3 and the commercial appliance module 6 and is used for transmitting the first power, the second power and the third power to the commercial appliance module 6, stopping transmission of the second power when receiving the first energy-saving signal, the third energy-saving signal or the first protection signal, stopping transmission of the third power when receiving the second energy-saving signal, the fourth energy-saving signal or the first protection signal, and stopping transmission of the first power when receiving the first protection signal.
[0034] The commercial appliance module 6 is used for transmitting the first power, the second power and the third power to the first power supply end, the second power supply end and the third power supply end of the connected commercial appliance circuit board.
[0035] In a specific embodiment, the power module 1 described above can adopt a power circuit composed of a power interface, a transformer, a rectifier, a multi-path power supply device, etc., can be connected to an alternating current power, and can perform voltage reduction, rectification filtering, and multi-path voltage stabilization filtering processing on the alternating current power; the temperature detection module 2 described above can adopt a temperature detection circuit composed of a resistor, a thermistor, a comparator, a transistor, a capacitor, etc., can perform temperature detection, and compare the size relationship between the detected temperature signal and the set temperature threshold value, which is less than the over-temperature threshold value, and detect whether the time length of the temperature signal being greater than the temperature threshold value exceeds the set timing time; the energy-saving control module 3 described above can adopt an energy-saving control circuit composed of a logic chip, a key switch, a diode, etc., can automatically turn off the power supply branch when the selected temperature exceeds the temperature threshold value; the over-temperature control module 4 described above can adopt an over-temperature control circuit composed of a resistor and a diode, and can perform over-temperature judgment on the temperature signal; the multi-path output module 5 described above can adopt a multi-path output circuit composed of a field effect transistor, a resistor, and a transistor, and can distribute the power output by the power module 1 to the commercial electric appliance module 6; the commercial electric appliance module 6 described above can be composed of a commercial electric appliance circuit board interface, and can be connected to the power supply end of the commercial electric appliance circuit board.
[0036] In another embodiment, please refer to Figure 1 、 Figure 2 and Figure 3 , the power module 1 includes a power interface, a first transformer B1, a first rectifier T1, a first capacitor C1, a multi-path power supply device, a fourth capacitor C4, a second capacitor C2, and a third capacitor C3;
[0037] Specifically, the first end and the second end of the power interface are respectively connected to the first end and the second end of the primary side of the first transformer B1, the first end and the second end of the secondary side of the first transformer B1 are respectively connected to the first end and the second end of the first rectifier T1, the third end of the first rectifier T1 is connected to the input end of the multi-path power supply device and the fourth end of the first rectifier T1 through the first capacitor C1, the ground end of the multi-path power supply device, the first end of the second capacitor C2, the first end of the third capacitor C3, and the first end of the fourth capacitor C4, the first output end, the second output end, and the third output end of the multi-path power supply device are respectively connected to the second end of the second capacitor C2, the second end of the third capacitor C3, and the second end of the fourth capacitor C4.
[0038] In a specific embodiment, the multi-path power supply device described above can be composed of multiple groups of voltage stabilizers, and can perform multi-path voltage stabilization control.
[0039] Further, the multi-output module 5 comprises a fifth resistor R5, a third power tube Q3, a third resistor R3, a first power tube Q1, a fourth resistor R4, a second power tube Q2, a first switch tube V1, a second switch tube V2 and a third switch tube V3; the commercial electric appliance module 6 comprises a commercial electric appliance power supply interface;
[0040] Specifically, the drain of the third power tube Q3 is connected to the first output end of the multi-output module and the gate of the third power tube Q3 and the collector of the third switch tube V3 are connected through the fifth resistor R5, the drain of the first power tube Q1 is connected to the second output end of the multi-output module and the gate of the first power tube Q1 and the collector of the first switch tube V1 are connected through the third resistor R3, the drain of the second power tube Q2 is connected to the third output end of the multi-output module and the gate of the second power tube Q2 and the collector of the second switch tube V2 are connected through the fourth resistor R4, the source of the third power tube Q3, the source of the first power tube Q1 and the source of the second power tube Q2 are connected to the first power supply end, the second power supply end and the third power supply end of the commercial electric appliance power supply interface respectively, the emitter of the first switch tube V1 is connected to the emitter of the second switch tube V2, the emitter of the third switch tube V3, the ground end of the commercial electric appliance power supply interface and the ground end, the base of the first switch tube V1 and the base of the second switch tube V2 are connected to the energy-saving control module 3, and the base of the third switch tube V3 is connected to the over-temperature control module 4.
[0041] In specific embodiments, the first power tube Q1, the second power tube Q2 and the third power tube Q3 can all be N-channel field effect tubes; the first switch tube V1, the second switch tube V2 and the third switch tube V3 can all be NPN type triodes.
[0042] Further, the energy-saving control module 3 comprises a first resistor R1, a second resistor R2, a first key switch S1, a second key switch S2, a third key switch S3, a first logic chip J1, a second logic chip J2, a first diode D1 and a third diode D3;
[0043] Specifically, one end of the first resistor R1 is connected to the first output end of the multi-power supply device and the moving end of the second key switch S2 through the second resistor R2, the static end of the second key switch S2 is connected to the A end of the first logic chip J1, the other end of the first resistor R1 is connected to the moving end of the first key switch S1, the static end of the first key switch S1 is connected to the A end of the second logic chip J2, the B end of the first logic chip J1 and the B end of the second logic chip J2 are connected to the temperature detection module 2, the Y end of the first logic chip J1 is connected to the first moving end and the second moving end of the third key switch S3, the Y end of the second logic chip J2 is connected to the third moving end and the fourth moving end of the third key switch S3, the first static end and the third static end of the third key switch S3 are both connected to the anode of the first diode D1, the cathode of the first diode D1 is connected to the base of the first switch tube V1, the second static end and the fourth static end of the third key switch S3 are both connected to the anode of the third diode D3, the cathode of the third diode D3 is connected to the base of the second switch tube V2.
[0044] In specific embodiments, the first key switch S1 and the second key switch S2 can both be selected as normally open switches; the third key switch S3 can be selected as a four-blade four-pole switch, wherein the first static end and the first moving end and the fourth static end and the fourth moving end of the third key switch S3 are both in a normally closed state, and the second static end and the second moving end and the third static end and the third moving end are both in a normally open state; the first logic chip J1 and the second logic chip J2 can both be selected as AND gate chips.
[0045] Further, the over-temperature control module 4 includes a sixth resistor R6, a fifth diode D5, a second diode D2 and a fourth diode D4.
[0046] Specifically, the first end of the sixth resistor R6 is connected to the temperature detection module 2, the second end of the sixth resistor R6 is connected to the cathode of the fifth diode D5, the anode of the fifth diode D5 is connected to the anode of the second diode D2, the anode of the fourth diode D4 and the base of the third switch tube V3, the cathode of the second diode D2 and the cathode of the fourth diode D4 are respectively connected to the base of the first switch tube V1 and the base of the second switch tube V2.
[0047] In specific embodiments, the sixth resistor R6 and the fifth diode D5 set the over-temperature threshold.
[0048] Further, the temperature detection module 2 includes a seventh resistor R7, an eighth resistor R8, a first thermistor RT1, a ninth resistor R9, a first comparator A1, a fourth switch tube V4, a tenth resistor R10, a fifth capacitor C5, an eleventh resistor R11, a fifth switch tube V5 and a twelfth resistor R12.
[0049] Specifically, one end of the seventh resistor R7 is connected to the first output end of the multipath power supply device, the collector of the fourth switch tube V4 and the collector of the fifth switch tube V5, and is connected to the non-inverting terminal of the first comparator A1, one end of the ninth resistor R9 and the first end of the sixth resistor R6 through the first thermistor RT1, the other end of the seventh resistor R7 is connected to the inverting terminal of the first comparator A1 and is connected to the ground end of the multipath power supply device, the other end of the ninth resistor R9, one end of the tenth resistor R10, one end of the fifth capacitor C5, one end of the twelfth resistor R12 and the ground end through the eighth resistor R8, the output end of the first comparator A1 is connected to the base of the fourth switch tube V4 and the B end of the first logic chip J1, the emitter of the fourth switch tube V4 is connected to the other end of the tenth resistor R10 and the other end of the fifth capacitor C5 and is connected to the base of the fifth switch tube V5 through the eleventh resistor R11, the emitter of the fifth switch tube V5 is connected to the other end of the twelfth resistor R12 and the B end of the second logic chip J2.
[0050] In specific embodiments, the first thermistor RT1 described above can be a negative temperature coefficient thermistor; the seventh resistor R7 and the eighth resistor R8 set the over-temperature threshold; the first comparator A1 described above can be an LM358 comparator; the fourth switch tube V4 and the fifth switch tube V5 described above can be NPN type triodes; the fifth resistor R5, the tenth resistor R10 and the eleventh resistor R11 set the timing time.
[0051] The energy-saving control circuit of the commercial appliance circuit board in this embodiment is connected with AC power through the power interface, and the first transformer B1, the first rectifier T1 and the first capacitor C1 perform voltage reduction and rectification filtering processing, the multi-path power supply device, the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 perform multi-path voltage stabilization and filtering processing and output the first power, the second power and the third power respectively, which are transmitted to the first power terminal, the second power terminal and the third power terminal of the commercial appliance circuit board interface through the third power tube Q3, the first power tube Q1 and the second power tube Q2 respectively, and the first thermistor RT1 and the ninth resistor R9 perform temperature detection, when the detected temperature signal is greater than the temperature threshold set by the seventh resistor R7 and the eighth resistor R8, the first comparator A1 outputs the first control signal to control the fourth switch tube V4 to be turned on, and the B end of the first logic chip J1 becomes high level, if only the second button switch S2 is pressed at this time, the A end of the first logic chip J1 becomes high level, so that the first logic chip J1 triggers the first switch tube V1 to be turned on through the first static end and the first dynamic end of the third button switch S3, the first diode D1, and the first power tube Q1 is cut off, at this time, the second power supply for the commercial appliance circuit board interface is stopped, if the second button switch S2 and the first button switch S1 are pressed, the temperature signal is greater than the temperature threshold, and the first power tube Q1 is first disconnected, the fourth switch tube V4 is turned on at the same time, and the fifth capacitor C5 stores power, so that when the duration of the temperature signal being greater than the temperature threshold exceeds the timing time set by the tenth resistor R10, the fifth capacitor C5 and the eleventh resistor R11, the fifth switch tube V5 is turned on, so that the second logic chip J2 triggers the second switch tube V2 to be turned on through the fourth static end and the fourth dynamic end of the third button switch S3, the third diode D3, and controls the second power tube Q2 to be cut off, and by closing the second dynamic end and the second static end and the third static end and the third dynamic end of the third switch, the disconnection sequence of the first power tube Q1 and the second power tube Q2 can be switched, so as to reduce the working temperature of the commercial appliance circuit board, if the temperature signal is greater than the over-temperature threshold, the first power tube Q1, the second power tube Q2 and the third power tube Q3 will be directly disconnected, and the power supply is stopped.
[0052] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0053] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. An energy-saving control circuit for a commercial appliance circuit board, characterized in that, the energy-saving control circuit for the commercial appliance circuit board comprises a power module, a temperature detection module, an energy-saving control module, an over-temperature control module, a multi-output module and a commercial appliance module; the power module is configured to access AC power and perform voltage reduction, rectification filtering and multi-path voltage stabilization output on the AC power, and output first, second and third electric energy; the temperature detection module is connected to the power module and configured to receive the first electric energy and perform temperature detection, output a first control signal when the detected temperature signal is greater than a set temperature threshold, and output a second control signal when the duration of the output first control signal exceeds a set timing time; the energy-saving control module is connected to the power module and the temperature detection module, and configured to output a first energy-saving signal or a second energy-saving signal when receiving the first electric energy and the first control signal, and output a third energy-saving signal or a fourth energy-saving signal when receiving the first electric energy and the second control signal; the over-temperature control module is connected to the temperature detection module and configured to output a first protection signal when the temperature signal is greater than a set over-temperature threshold; the multi-output module is connected to the power module, the over-temperature control module, the energy-saving control module and the commercial appliance module, and configured to transmit the first, second and third electric energy to the commercial appliance module, stop transmitting the second electric energy when receiving the first energy-saving signal, the third energy-saving signal or the first protection signal, stop transmitting the third electric energy when receiving the second energy-saving signal, the fourth energy-saving signal or the first protection signal, and stop transmitting the first electric energy when receiving the first protection signal; the commercial appliance module is configured to transmit the first, second and third electric energy to the first, second and third power supply ends of the connected commercial appliance circuit board.
2. The energy saving control circuit for a circuit board of a commercial electric appliance according to claim 1, wherein the power module comprises a power interface, a first transformer, a first rectifier, a first capacitor, a multi-path power supply device, a fourth capacitor, a second capacitor and a third capacitor; the first and second ends of the power interface are connected to the first and second ends of the primary side of the first transformer, the first and second ends of the secondary side of the first transformer are connected to the first and second ends of the first rectifier, the third end of the first rectifier is connected to the input end of the multi-path power supply device and the fourth end of the first rectifier through the first capacitor, the ground end of the multi-path power supply device, the first end of the second capacitor, the first end of the third capacitor and the first end of the fourth capacitor, the first, second and third output ends of the multi-path power supply device are connected to the second end of the second capacitor, the second end of the third capacitor and the second end of the fourth capacitor, respectively.
3. The energy saving control circuit for a circuit board of a commercial electric appliance according to claim 2, wherein the multi-output module comprises a fifth resistor, a third power tube, a third resistor, a first power tube, a fourth resistor, a second power tube, a first switch tube, a second switch tube and a third switch tube; and the commercial appliance module comprises a commercial appliance power interface. The drain of the third power tube is connected with the first output end of the multi-power supply device and the gate of the third power tube is connected with the collector of the third switch tube through the fifth resistor, the drain of the first power tube is connected with the second output end of the multi-power supply device and the gate of the first power tube is connected with the collector of the first switch tube through the third resistor, the drain of the second power tube is connected with the third output end of the multi-power supply device and the gate of the second power tube is connected with the collector of the second switch tube through the fourth resistor, the source of the third power tube, the source of the first power tube and the source of the second power tube are connected with the first power supply end, the second power supply end and the third power supply end of the commercial electric appliance circuit board interface respectively, the emitter of the first switch tube is connected with the emitter of the second switch tube, the emitter of the third switch tube, the ground end of the commercial electric appliance circuit board interface and the ground end, the base of the first switch tube and the base of the second switch tube are connected with the energy-saving control module, and the base of the third switch tube is connected with the over-temperature control module.
4. The energy saving control circuit for a circuit board of a commercial electric appliance according to claim 3, wherein The energy-saving control module comprises a first resistor, a second resistor, a first key switch, a second key switch, a third key switch, a first logic chip, a second logic chip, a first diode and a third diode. One end of the first resistor is connected with the first output end of the multi-power supply device and the moving end of the second key switch through the second resistor, the static end of the second key switch is connected with the A end of the first logic chip, the other end of the first resistor is connected with the moving end of the first key switch, the static end of the first key switch is connected with the A end of the second logic chip, the B end of the first logic chip and the B end of the second logic chip are connected with the temperature detection module, the Y end of the first logic chip is connected with the first moving end and the second moving end of the third key switch, the Y end of the second logic chip is connected with the third moving end and the fourth moving end of the third key switch, the first static end and the third static end of the third key switch are connected with the anode of the first diode, the cathode of the first diode is connected with the base of the first switch tube, the second static end and the fourth static end of the third key switch are connected with the anode of the third diode, and the cathode of the third diode is connected with the base of the second switch tube.
5. The energy saving control circuit for a circuit board of a commercial electric appliance according to claim 4, wherein The over-temperature control module comprises a sixth resistor, a fifth diode, a second diode and a fourth diode. The first end of the sixth resistor is connected with the temperature detection module, the second end of the sixth resistor is connected with the cathode of the fifth diode, the anode of the fifth diode is connected with the anode of the second diode, the anode of the fourth diode and the base of the third switch tube, and the cathode of the second diode and the cathode of the fourth diode are connected with the base of the first switch tube and the base of the second switch tube respectively.
6. The energy saving control circuit of a circuit board of a commercial electric appliance according to claim 5, wherein The temperature detection module comprises a seventh resistor, an eighth resistor, a first thermistor, a ninth resistor, a first comparator, a fourth switch tube, a tenth resistor, a fifth capacitor, an eleventh resistor, a fifth switch tube and a twelfth resistor. One end of the seventh resistor is connected with the first output end of the multi-power supply device, the collector of the fourth switch tube and the collector of the fifth switch tube, and is connected with the non-inverting terminal of the first comparator, one end of the ninth resistor and the first end of the sixth resistor through the first thermistor; the other end of the seventh resistor is connected with the inverting terminal of the first comparator and is connected with the ground end of the multi-power supply device, the other end of the ninth resistor, one end of the tenth resistor, one end of the fifth capacitor, one end of the twelfth resistor and the ground end through the eighth resistor; the output end of the first comparator is connected with the base of the fourth switch tube and the B end of the first logic chip; the emitter of the fourth switch tube is connected with the other end of the tenth resistor and the other end of the fifth capacitor and is connected with the base of the fifth switch tube through the eleventh resistor; the emitter of the fifth switch tube is connected with the other end of the twelfth resistor and the B end of the second logic chip.