Air conditioner prototype device
By using general-purpose work boxes and communication circuits instead of the external unit of the air-conditioning and air-shell prototype, the problem of traditional air-conditioning prototypes requiring special treatment and separate development of different models is solved, and the effect of reducing R&D and production costs and extending the service life of the prototype is achieved.
Patent Information
- Application Number
- CN202421218417.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-05-30
AI Technical Summary
Traditional air-conditioning and air-shell prototypes require special treatment of the actual internal components and procedures, resulting in an increase in R&D and production costs. Different models need to be developed separately, and they cannot be sold normally after display, which wastes corporate resources.
The actual production air conditioner internal unit is adopted and replaced by general work boxes and communication circuits to avoid special treatment of internal unit components and programs and reduce R&D and production costs.
It realizes that there is no need to deal with the air conditioner internal unit, reduces R&D and production costs, and solves the development problems of different models and the scrapping after display.
Smart Images
Figure CN222560137U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air conditioner prototypes, in particular to an air conditioner prototype device. Background Art
[0002] An air conditioner blank sample refers to a display prototype that only contains some empty shells and appearance parts, and does not contain some electronic components and refrigeration parts. Its main function is to show the functions of the air conditioner to customers and let them intuitively experience the functions and characteristics of the product. However, for traditional air conditioner blank shell prototypes, it is necessary to delete some components from the actual production internal unit in terms of hardware, and modify the actual production internal unit program in terms of software. Different models require different processing solutions, and the produced blank samples cannot be sold normally, which wastes corporate resources and increases R&D and production costs. Utility Model Content
[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an air conditioner prototype device, which does not require special processing of components and programs of the air conditioner indoor unit, thereby reducing R&D costs and production costs.
[0004] The air conditioner prototype device according to the embodiment of the utility model comprises:
[0005] The indoor unit of the air conditioner has a connection line between the indoor and outdoor units;
[0006] A universal tooling box is connected to the indoor and outdoor unit connection line. A communication circuit is arranged inside the universal tooling box. The indoor unit of the air conditioner supplies power to and communicates with the universal tooling box through the indoor and outdoor unit connection line and the communication circuit.
[0007] According to some embodiments of the present utility model, the indoor and outdoor unit connection line includes a neutral line, a live line and a signal line, and the communication circuit includes:
[0008] An input rectifier and filter module, the input end of which is connected to the neutral line and the live line;
[0009] A switching power supply module, the input end of which is electrically connected to the output end of the input rectifier and filter module;
[0010] A main control module, the input end of which is electrically connected to the output end of the switching power supply module;
[0011] The zero-fire communication module is electrically connected to the main control module, the output end of the input rectification and filtering module and the signal line respectively.
[0012] According to some embodiments of the present utility model, the input rectification and filtering module includes:
[0013] a first diode, wherein an anode of the first diode is connected to the live wire;
[0014] a first capacitor, one end of the first capacitor being connected to the cathode of the first diode, and the other end of the first capacitor being connected to the neutral line;
[0015] a first inductor, one end of which is connected to the cathode of the first diode;
[0016] A second capacitor, one end of the second capacitor is connected to the other end of the first inductor, and the other end of the second capacitor is connected to the neutral line.
[0017] According to some embodiments of the present utility model, the switching power supply module includes:
[0018] A step-down transformer unit, the input end of which is electrically connected to the output end of the input rectifier and filter module;
[0019] A voltage stabilizing capacitor is electrically connected to the output end of the step-down transformer unit.
[0020] According to some embodiments of the present utility model, the step-down transformer unit includes:
[0021] A buck chip, a first end of which is electrically connected to an output end of the input rectifier and filter module;
[0022] a third capacitor, one end of the third capacitor being electrically connected to the second end of the buck chip, and the other end of the third capacitor being electrically connected to the fourth end of the buck chip;
[0023] a first resistor, one end of the first resistor being electrically connected to the second end of the buck chip, and the other end of the first resistor being electrically connected to the third end of the buck chip;
[0024] a second resistor, one end of the second resistor being electrically connected to the other end of the first resistor;
[0025] a fourth capacitor, one end of the fourth capacitor being electrically connected to the other end of the second resistor, and the other end of the fourth capacitor being electrically connected to the second end of the buck chip;
[0026] a second diode, wherein an anode of the second diode is connected to the neutral line, and a cathode of the second diode is electrically connected to a second end of the buck chip;
[0027] a second inductor, one end of the second inductor being electrically connected to the second end of the buck chip, and the other end of the second inductor being electrically connected to the voltage stabilizing capacitor;
[0028] A third diode, wherein an anode of the third diode is electrically connected to the other end of the second inductor, and a cathode of the third diode is electrically connected to the other end of the second resistor.
[0029] According to some embodiments of the present utility model, the zero-fire communication module includes:
[0030] A first triode, wherein a base of the first triode is electrically connected to the main control module via a third resistor, and an emitter of the first triode is grounded;
[0031] a fifth capacitor, one end of which is electrically connected to the collector of the first transistor, and the other end of which is connected to a power supply via a fourth resistor;
[0032] a first photoelectric coupler, wherein an input end of the first photoelectric coupler is electrically connected to two ends of the fifth capacitor, and one end of an output end of the first photoelectric coupler is electrically connected to the live wire;
[0033] A second photoelectric coupler, wherein one end of the input end of the second photoelectric coupler is electrically connected to the other end of the output end of the first photoelectric coupler, and the other end of the input end of the second photoelectric coupler is electrically connected to the signal line;
[0034] A second transistor, the base of the second transistor is electrically connected to one end of the output end of the second photoelectric coupler through a fifth resistor, the other end of the output end of the second photoelectric coupler is grounded, the emitter of the second transistor is grounded, and the collector of the second transistor is electrically connected to the main control module through a sixth resistor.
[0035] The air-conditioning prototype device according to the embodiment of the utility model has at least the following beneficial effects: the indoor unit of the air-conditioning adopts the indoor unit actually produced, while the outdoor unit is replaced by a universal tooling box. In this way, there is no need for special processing of the components and programs of the indoor unit of the air-conditioning, thereby reducing the research and development cost and production cost, and solving the problem that traditional air-conditioning empty shell prototypes need to be developed separately for different models, and at the same time solving the problem that traditional air-conditioning empty shell prototypes need to be scrapped after display and cannot be sold normally.
[0036] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0037] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0038] Figure 1 It is a structural schematic diagram of an air conditioner prototype device according to an embodiment of the utility model;
[0039] Figure 2 A schematic diagram of the structure of a communication circuit according to an embodiment of the utility model;
[0040] Figure 3 The circuit schematic diagram of the input rectifier filter module and the switching power supply module of the embodiment of the utility model;
[0041] Figure 4 The circuit schematic diagram of the zero-fire communication module of the embodiment of the utility model;
[0042] Figure 5 A control method for an air conditioner prototype device according to an embodiment of the utility model;
[0043] Reference numerals:
[0044] Air conditioner indoor unit 100, universal tooling box 200, indoor and outdoor unit connecting wire 300, input rectifier filter module 400, switching power supply module 500, main control module 600, zero-fire communication module 700. DETAILED DESCRIPTION
[0045] Embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limitations on the present application. For the step numbers in the following embodiments, they are only provided for the convenience of explanation, and the order between the steps is not limited in any way. The execution order of each step in the embodiment can be adaptively adjusted according to the understanding of those skilled in the art.
[0046] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the utility model and the drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.
[0047] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0048] An air conditioner blank sample refers to a display prototype that only contains some empty shells and appearance parts, and does not contain some electronic components and refrigeration parts. Its main function is to show the functions of the air conditioner to customers and let them intuitively experience the functions and characteristics of the product. However, for traditional air conditioner blank shell prototypes, it is necessary to delete some components from the actual production internal unit in terms of hardware, and modify the actual production internal unit program in terms of software. Different models require different processing solutions, and the produced blank samples cannot be sold normally, which wastes corporate resources and increases R&D and production costs.
[0049] To this end, an embodiment of the utility model proposes an air-conditioning prototype device, in which the indoor unit of the air-conditioning is an indoor unit actually produced, while the outdoor unit is replaced by a universal tooling box. In this way, there is no need for special processing of the components and programs of the indoor unit of the air-conditioning, thereby reducing R&D costs and production costs, and solving the problem that traditional air-conditioning empty shell prototypes need to be developed separately for different models, and at the same time solving the problem that traditional air-conditioning empty shell prototypes need to be scrapped after display and cannot be sold normally.
[0050] The following is combined with Figure 1-4 , describe in detail the air conditioning prototype device of the embodiment of the utility model.
[0051] like Figure 1 As shown, an air-conditioning prototype device is proposed in an embodiment of the utility model, including an air-conditioning indoor unit 100 and a universal tooling box 200, the air-conditioning indoor unit 100 has an indoor-outdoor unit connecting line 300, the universal tooling box 200 is connected to the air-conditioning indoor unit 100 through the indoor-outdoor unit connecting line 300, a communication circuit is arranged inside the universal tooling box 200, and the air-conditioning indoor unit 100 supplies power to and communicates with the universal tooling box 200 through the indoor-outdoor unit connecting line 300 and the communication circuit.
[0052] It should be noted that, according to the air-conditioning prototype device of the embodiment of the utility model, the air-conditioning indoor unit 100 adopts the indoor unit actually produced, while the outdoor unit is replaced by a universal tooling box 200. In this way, there is no need for special processing of the components and programs of the air-conditioning indoor unit 100, thereby reducing R&D costs and production costs, and solving the problem that traditional air-conditioning empty shell prototypes need to be developed separately for different models, and at the same time solving the problem that traditional air-conditioning empty shell prototypes need to be scrapped after display and cannot be sold normally.
[0053] In this example, the air conditioner indoor unit 100 is connected to the universal tooling box 200 via the internal and external unit connecting line 300, and a communication circuit is provided inside the universal tooling box 200. The air conditioner indoor unit 100 supplies power and communicates with the universal tooling box 200 via the internal and external unit connecting line 300 and the communication circuit.
[0054] like Figure 2As shown, in some embodiments of the utility model, the indoor and outdoor unit connecting line 300 includes a neutral line N, a live line L, a signal line COM and a ground line, and the communication circuit includes an input rectifier and filter module 400, a switching power supply module 500, a main control module 600 and a neutral-live communication module 700; wherein, the input end of the input rectifier and filter module 400 is connected to the neutral line N and the live line L, so as to obtain the input voltage provided by the air conditioner indoor unit 100, the output end of the input rectifier and filter module 400 is electrically connected to the input end of the switching power supply module 500, the output end of the switching power supply module 500 is electrically connected to the input end of the main control module 600, and the neutral-live communication module 700 is respectively electrically connected to the output end of the main control module 600, the input rectifier and filter module 400 and the signal line COM.
[0055] The input voltage provided by the air conditioner indoor unit 100 is sent to the input rectifier filter module 400 through the indoor and outdoor unit connecting line 300; after the input rectifier filter module 400 filters and rectifies the input voltage, it is sent to the zero-fire communication module 700 and the switching power supply module 500 to supply power to the zero-fire communication module 700; after the switching power supply module 500 steps down the input voltage, it is sent to the main control module 600 to supply power to the main control module 600.
[0056] like Figure 3 As shown, in some embodiments of the present utility model, the input rectifying and filtering module 400 includes a first diode D1, a first capacitor C1, a first inductor L1 and a second capacitor C2, the anode of the first diode D1 is connected to the live wire L, the cathode of the first diode D1 is connected to one end of the first capacitor C1, and the other end of the first capacitor C1 is connected to the neutral wire N; one end of the first inductor L1 is connected to the cathode of the first diode D1, the other end of the first inductor L1 is connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is connected to the neutral wire N. Among them, the first diode D1 is a rectifying diode, which plays a rectifying role. The rectifying diode is characterized by unidirectional conductivity. When AC passes through the rectifying diode, it can only pass half a cycle of current, thereby generating unidirectional DC. The first capacitor C1, the first inductor L1 and the second capacitor C2 form a Π-type filter circuit, which plays a filtering role and is mainly used to reduce the voltage ripple after rectification. The purpose of the first capacitor C1 is to limit the voltage rise rate at the moment of power-on and filter out the ripple introduced by the power supply to the input side circuit. The function of the first inductor L1 is to suppress the current change rate, and the function of the second capacitor C2 is to filter out the voltage ripple.
[0057] like Figure 3As shown, in some embodiments of the present utility model, the switching power supply module 500 includes a step-down transformer unit and a voltage stabilizing capacitor C8, the input end of the step-down transformer unit is electrically connected to the output end of the input rectifier filter module 400, and the output end of the step-down transformer unit is electrically connected to the voltage stabilizing capacitor C8. The step-down transformer unit is used to step down the input voltage, and the voltage stabilizing capacitor C8 is used to filter the stepped-down input voltage and stabilize the output voltage.
[0058] Specifically, Figure 3 As shown, in some embodiments of the utility model, the buck transformer unit includes a buck chip U1, a third capacitor C3, a first resistor R1, a second resistor R2, a fourth capacitor C4, a second diode D2, a second inductor L2 and a third diode D3, the first end (pin 1) of the buck chip U1 is electrically connected to the output end of the input rectifier filter module 400, the second end (pin 2) of the buck chip U1 is electrically connected to one end of the third capacitor C3, and the other end of the third capacitor C3 is electrically connected to the fourth end (pin 4) of the buck chip U1; one end of the first resistor R1 is electrically connected to the second end of the buck chip U1, and the other end of the first resistor R1 is electrically connected to the third The first terminal (pin 3) is electrically connected to the first resistor R1; the other end of the first resistor R1 is also electrically connected to one end of the second resistor R2, the other end of the second resistor R2 is electrically connected to one end of the fourth capacitor C4, and the other end of the fourth capacitor C4 is electrically connected to the second end of the buck chip U1; the anode of the second diode D2 is grounded, and the cathode of the second diode D2 is electrically connected to the second end of the buck chip U1; one end of the second inductor L2 is electrically connected to the second end of the buck chip U1, the other end of the second inductor L2 is electrically connected to the first end of the voltage-stabilizing capacitor C8, the other end of the second inductor L2 is also electrically connected to the anode of the third diode D3, and the cathode of the third diode D3 is electrically connected to the other end of the second resistor R2.
[0059] Among them, the buck chip U1 adopts the model LNK304, pin 1 is the drain D, pin 2 is the source S, pin 3 is the feedback pin FB, and pin 4 is the bypass pin BP. Pin 4 is connected to the third capacitor C3, which is an energy storage capacitor and provides a driving voltage for the buck chip U1; the buck chip U1 sets the output voltage according to the resistance values of the first resistor R1 and the second resistor R2, and the circuit achieves voltage stabilization by skipping the switching cycle. When the output voltage rises, the current on pin 3 will also rise. When the current rises above the threshold, the subsequent cycle is skipped until the current on pin 3 is lower than the threshold, thereby maintaining a constant output voltage; the voltage across the fourth capacitor C4 follows the output voltage of the first resistor R1 and the second resistor R2, and its function is to maintain the output voltage; the unidirectional conductivity of the third diode D3 is used to ensure that the feedback end is not affected by the rear-end load; the second diode D2 is a freewheeling diode, the second inductor L2 is an energy storage inductor, and the function of the voltage stabilizing capacitor C8 is to maintain the output voltage. The buck chip U1 has a built-in automatic start circuit for short circuit and open loop fault protection.
[0060] The main control module 600 may use a processor such as an MCU, which is responsible for controlling the operation of the entire communication circuit. The MCU is mainly composed of a main chip and peripheral circuits. The main chip is generally a chip with a UART function, which can communicate with the air conditioner indoor unit 100. The peripheral circuits are mainly selected according to the pin definition of the chip specification.
[0061] like Figure 4As shown, in some embodiments of the utility model, the zero-fire communication module 700 includes a first transistor Q1, a first photocoupler PC1, a second photocoupler PC2 and a second transistor Q2; the base of the first transistor Q1 is electrically connected to the main control module 600 (TXD pin) through a third resistor R3, the emitter of the first transistor Q1 is grounded, and a resistor R9 is connected between the base and the emitter of the first transistor Q1; the collector of the first transistor Q1 is electrically connected to one end of the fifth capacitor C5, and the other end of the fifth capacitor C5 is connected to a power supply (5V) through a fourth resistor R4; the input end of the first photocoupler PC1 is electrically connected to both ends of the fifth capacitor C5, and the One end of the output end of the first photocoupler PC1 is electrically connected to the live wire L, the other end of the output end of the first photocoupler PC1 is electrically connected to one end of the input end of the second photocoupler PC2, and the other end of the input end of the second photocoupler PC2 is electrically connected to the signal line COM; the base of the second triode Q2 is electrically connected to one end of the output end of the second photocoupler PC2 through the fifth resistor R5, the other end of the output end of the second photocoupler PC2 is grounded, the emitter of the second triode Q2 is grounded, the collector of the second triode Q2 is electrically connected to the main control module 600 (RXD pin) through the sixth resistor R6, and the sixth resistor R6 is also grounded through the capacitor C7. The output end of the second photocoupler PC2 is connected to a diode D4, the anode of the diode D4 is grounded, and the cathode of the diode D4 is connected to the power supply 5V through the resistor R8 and the diode D5 connected in parallel; the capacitor C6 is connected between the base and the emitter of the second triode Q2.
[0062] The working process of the zero-fire communication module 700 is: the main control module 600 sends a pulse signal to turn on the first transistor Q1. The resistor R9 is a voltage-dividing resistor. In order to avoid the first transistor Q1 being mis-turned on due to the low level being too high, the resistor R9 is added to ensure that when the main control module 600 outputs a low level, the base voltage of the first transistor Q1 is lower than its turn-on voltage. After the first transistor Q1 is turned on, the 5V voltage forms a loop with the primary side light emitting diode of the first photocoupler PC1 and the ground through the fourth resistor R4, the secondary side collector and emitter of the first photocoupler PC1 are turned on, the live wire L forms a loop with the signal line COM, the primary side light emitting diode of the second photocoupler PC2 has current passing through it, the secondary side collector and emitter of the second photocoupler PC2 are turned on, the 5V voltage forms a loop with the secondary side of the second photocoupler PC2 and the ground through the resistor R8, the base of the second transistor Q2 is at a low level, the second transistor Q2 is turned off, the power supply at the upper end of the resistor R7 is connected to the RXD pin of the main control module 600, and the RXD pin is at a high level. The diode D4 is a freewheeling diode, the diode D5 is a clamping diode, the fifth resistor R5 is a voltage dividing resistor, the capacitors C6 and C7 are voltage stabilizing capacitors, and the resistors R6 and R7 are current limiting resistors.
[0063] The first transistor Q1 and the second transistor Q2 act as switches, the first photocoupler PC1 and the second photocoupler PC2 isolate the input and output circuits from each other, the electrical signal is unidirectional during transmission, and has good anti-electromagnetic interference and electrical insulation capabilities.
[0064] According to the air conditioner prototype device of the embodiment of the utility model, the air conditioner indoor unit 100 is an indoor unit actually produced, and the outdoor unit is replaced by a universal tooling box 200. In this way, there is no need to perform special processing on the components and programs of the air conditioner indoor unit 100, thereby reducing the R&D cost and production cost. In this way, the problem that the traditional air conditioner empty shell prototype needs to be developed separately for different models is solved, and the problem that the traditional air conditioner empty shell prototype is scrapped after display and cannot be sold normally is solved.
[0065] like Figure 5 As shown, after the air conditioner prototype device is powered on, the program is initialized, and then the air conditioner indoor unit 100 performs a self-check to determine whether there is a fault. When the air conditioner indoor unit 100 performs a self-check and determines that there is a fault, the display panel of the air conditioner indoor unit 100 displays the fault condition. If the air conditioner indoor unit 100 determines that there is no fault after the self-check, the universal tooling box 200 further feeds back the required data according to the mode of the air conditioner indoor unit 100 to determine whether there is a fault: ① If there is a fault, determine whether the fault type is a communication fault. If it is a communication fault, the display panel of the air conditioner indoor unit 100 displays a communication fault. If it is not a communication fault, the air conditioner indoor unit 100 operates according to the instruction; ② If there is no fault, the air conditioner indoor unit 100 operates according to the instruction.
[0066] Although specific embodiments are described herein, those of ordinary skill in the art will recognize that many other modifications or alternative embodiments are also within the scope of the present disclosure. For example, any of the functions and / or processing capabilities described in conjunction with a particular device or component may be performed by any other device or component. In addition, although various exemplary implementations and architectures have been described according to embodiments of the present disclosure, those of ordinary skill in the art will recognize that many other modifications to the exemplary implementations and architectures described herein are also within the scope of the present disclosure.
[0067] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.
Claims
1. An air conditioner prototype device, characterized in that: include: The indoor unit of the air conditioner has a connection line between the indoor and outdoor units; A universal tooling box is connected to the indoor and outdoor unit connection line. A communication circuit is arranged inside the universal tooling box. The indoor unit of the air conditioner supplies power to and communicates with the universal tooling box through the indoor and outdoor unit connection line and the communication circuit.
2. The air conditioner prototype device according to claim 1, characterized in that: The internal and external unit connection wires include a neutral wire, a live wire and a signal wire, and the communication circuit includes: An input rectifier and filter module, the input end of which is connected to the neutral line and the live line; A switching power supply module, the input end of which is electrically connected to the output end of the input rectifier and filter module; A main control module, the input end of which is electrically connected to the output end of the switching power supply module; The zero-fire communication module is electrically connected to the main control module, the output end of the input rectification and filtering module and the signal line respectively.
3. The air conditioner prototype device according to claim 2, characterized in that: The input rectification and filtering module comprises: a first diode, wherein an anode of the first diode is connected to the live wire; a first capacitor, one end of the first capacitor being connected to the cathode of the first diode, and the other end of the first capacitor being connected to the neutral line; a first inductor, one end of which is connected to the cathode of the first diode; A second capacitor, one end of the second capacitor is connected to the other end of the first inductor, and the other end of the second capacitor is connected to the neutral line.
4. The air conditioner prototype device according to claim 2, characterized in that: The switching power supply module comprises: A step-down transformer unit, the input end of which is electrically connected to the output end of the input rectifier and filter module; A voltage stabilizing capacitor is electrically connected to the output end of the step-down transformer unit.
5. The air conditioner prototype device according to claim 4, characterized in that: The step-down transformer unit comprises: A buck chip, a first end of which is electrically connected to an output end of the input rectifier and filter module; a third capacitor, one end of the third capacitor being electrically connected to the second end of the buck chip, and the other end of the third capacitor being electrically connected to the fourth end of the buck chip; a first resistor, one end of the first resistor being electrically connected to the second end of the buck chip, and the other end of the first resistor being electrically connected to the third end of the buck chip; a second resistor, one end of the second resistor being electrically connected to the other end of the first resistor; a fourth capacitor, one end of the fourth capacitor being electrically connected to the other end of the second resistor, and the other end of the fourth capacitor being electrically connected to the second end of the buck chip; a second diode, wherein an anode of the second diode is connected to the neutral line, and a cathode of the second diode is electrically connected to a second end of the buck chip; a second inductor, one end of the second inductor being electrically connected to the second end of the buck chip, and the other end of the second inductor being electrically connected to the voltage stabilizing capacitor; A third diode, wherein an anode of the third diode is electrically connected to the other end of the second inductor, and a cathode of the third diode is electrically connected to the other end of the second resistor.
6. The air conditioner prototype device according to claim 2, characterized in that: The zero-fire communication module comprises: A first triode, wherein a base of the first triode is electrically connected to the main control module via a third resistor, and an emitter of the first triode is grounded; a fifth capacitor, one end of which is electrically connected to the collector of the first transistor, and the other end of which is connected to a power supply via a fourth resistor; a first photoelectric coupler, wherein an input end of the first photoelectric coupler is electrically connected to two ends of the fifth capacitor, and one end of an output end of the first photoelectric coupler is electrically connected to the live wire; A second photoelectric coupler, wherein one end of the input end of the second photoelectric coupler is electrically connected to the other end of the output end of the first photoelectric coupler, and the other end of the input end of the second photoelectric coupler is electrically connected to the signal line; A second transistor, the base of the second transistor is electrically connected to one end of the output end of the second photoelectric coupler through a fifth resistor, the other end of the output end of the second photoelectric coupler is grounded, the emitter of the second transistor is grounded, and the collector of the second transistor is electrically connected to the main control module through a sixth resistor.