WO2024077694A1 - 空调内机控制板、空调内机和分体式空调系统 - Google Patents

空调内机控制板、空调内机和分体式空调系统 Download PDF

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Publication number
WO2024077694A1
WO2024077694A1 PCT/CN2022/130308 CN2022130308W WO2024077694A1 WO 2024077694 A1 WO2024077694 A1 WO 2024077694A1 CN 2022130308 W CN2022130308 W CN 2022130308W WO 2024077694 A1 WO2024077694 A1 WO 2024077694A1
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WIPO (PCT)
Prior art keywords
indoor
resistor
air conditioner
outdoor
circuit
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PCT/CN2022/130308
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English (en)
French (fr)
Inventor
李俊
黎宇
Original Assignee
广州视源电子科技股份有限公司
合肥视研电子科技有限公司
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Publication of WO2024077694A1 publication Critical patent/WO2024077694A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/52—Air quality properties of the outside air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Definitions

  • the embodiments of the present application relate to the technical field of heat exchange equipment, and in particular to an air-conditioning indoor unit control panel, an air-conditioning indoor unit, and a split air-conditioning system.
  • the air conditioner includes an indoor unit installed indoors and an outdoor unit installed outdoors.
  • the indoor and outdoor heat exchanges are achieved through the cooperation of the indoor unit and the outdoor unit, thereby achieving the effect of regulating the indoor temperature.
  • the indoor unit and outdoor unit of the air conditioner are respectively equipped with control panels, and the control panels are provided with driving circuits corresponding to the working components in the indoor unit and outdoor unit of the air conditioner.
  • the driving circuit drives the corresponding working components to adjust the indoor temperature.
  • the indoor unit of the air conditioner realizes various information display through the display panel.
  • the basic functions of the existing air conditioner require three control panels.
  • the outdoor open environment where the outdoor unit of the air conditioner is located may have harsh environmental factors such as high temperature, low temperature, high humidity, dust, etc., which have a negative impact on the reliability and service life of the control panel of the outdoor unit of the air conditioner.
  • the control panel in the outdoor unit of the air conditioner installed on the exterior wall fails, it is difficult to repair. Overall, the production cost, loss cost during use and maintenance cost of the existing air conditioning system are relatively high.
  • the present application provides an air conditioner indoor unit control panel, an air conditioner indoor unit and a split air conditioning system to solve the technical problems of high production cost, loss cost during use and maintenance cost of the existing air conditioning system.
  • an embodiment of the present application provides an air conditioner indoor unit control board for an air conditioner indoor unit, the air conditioner indoor unit control board comprising an indoor main controller, a display control chip, a power supply module, at least one outdoor high-voltage drive circuit, an indoor high-voltage drive circuit, a first communication module, a power factor correction circuit, a first board body and a display board body;
  • the indoor main controller is arranged on the first board body, and is used to generate a variety of outdoor strong power control instructions and indoor strong power control instructions;
  • At least one outdoor strong current driving circuit is arranged on the first plate body, and is connected to the indoor main controller and receives corresponding outdoor strong current control instructions from the indoor main controller, and is used to control the operation of corresponding outdoor strong current components according to corresponding outdoor strong current control instructions;
  • the indoor strong current driving circuit is arranged on the first plate body, connected to the indoor main controller and receives the indoor strong current control instruction from the indoor main controller, and is used to control the operation of the corresponding indoor strong current component according to the indoor strong current control instruction;
  • the power supply module is arranged on the first plate body and connected to the mains power supply.
  • the power output end of the power supply module is connected to the drive circuit corresponding to the AC drive strong electric component in a variety of outdoor strong electric drive circuits and indoor strong electric drive circuits, and is used to supply power to the corresponding AC drive strong electric component; the power output end of the power supply module is also connected to the power input end of the power factor correction circuit;
  • the power factor correction circuit is arranged on the first board body, and is connected to the power supply from the power supply module through the power input end.
  • the power output end of the power factor correction circuit is connected to the drive circuit corresponding to the DC drive strong electric component in at least one outdoor strong electric drive circuit and the indoor strong electric drive circuit, so as to supply power to the corresponding DC drive strong electric component;
  • the first communication module is arranged on the first board, the display control chip is arranged on the display board, and the indoor weak current component of the air conditioner indoor unit is connected to the display control chip;
  • the first communication module and the display control chip are connected with a communication line, and the indoor main controller sends and receives data with the indoor weak current components through the communication line and the display control chip.
  • an embodiment of the present application further provides an air-conditioner indoor unit, comprising the air-conditioner indoor unit control panel of the first aspect.
  • an embodiment of the present application further provides a split-type air-conditioning system, comprising an air-conditioning outdoor unit and an air-conditioning indoor unit of the second aspect.
  • the above-mentioned air conditioner indoor unit control panel, air conditioner indoor unit and split air conditioning system include an indoor main controller, a display control chip, a power supply module, at least one outdoor strong electric drive circuit, an indoor strong electric drive circuit, a first communication module, a power factor correction circuit, a first board and a display board;
  • the indoor main controller is arranged on the first board, and is used to generate a variety of outdoor strong electric control instructions and indoor strong electric control instructions;
  • at least one outdoor strong electric drive circuit is arranged on the first board, and is connected to the indoor main controller and receives the corresponding outdoor strong electric control instructions from the indoor main controller, and is used to control the operation of the corresponding outdoor strong electric component according to the corresponding outdoor strong electric control instruction;
  • the indoor strong electric drive circuit is arranged on the first board, connected to the indoor main controller and receives the indoor strong electric control instructions from the indoor main controller, and is used to control the operation of the corresponding indoor strong electric component according to the indoor strong electric control instruction;
  • the power supply module is arranged
  • the drive control of the main working components of the outdoor unit of the air conditioner is realized in the indoor unit of the air conditioner, and the indoor weak-electric components of the indoor unit of the air conditioner are connected to the display board, and the indoor weak-electric components are controlled by the indoor main controller through the display control chip on the display board, thereby reducing the control board and optimizing the working environment of the drive circuit of the main working components of the outdoor unit of the air conditioner, eliminating the negative impact of the harsh environment on the main working components of the outdoor unit of the air conditioner, reducing the maintenance cost in the event of a failure, and reducing the cost in all aspects from production, use to maintenance.
  • the drive control of the strong-electric components is realized in the first board, and the drive control of the indoor weak-electric components is realized in the display board, forming a separate drive control of the strong and weak-electric components, avoiding the interference of the strong current on the weak-electric signal, and effectively reducing or even eliminating the erroneous operation that may be caused by the interference of the strong current on the weak-electric signal.
  • FIG1 is a connection diagram of an air conditioner indoor unit control panel provided in an embodiment of the present application and applied to an air conditioner.
  • FIG. 2 is a circuit schematic diagram of an optocoupler signal isolation circuit provided in an embodiment of the present application.
  • Figure 1 is a connection diagram of an air conditioner indoor unit control board provided by an embodiment of the present application and applied to a split air conditioner system.
  • the off-board components include various sensors of the air conditioner indoor unit 10 (including but not limited to the inner ring sensor 134 for detecting internal environmental parameters, the inner disk sensor 133 for detecting inner coil parameters, etc.) and various working components (including but not limited to the indoor fan 131, the stepper motor 132, etc.).
  • a first board 110 is set in the air-conditioning indoor unit 10, which is used to carry the driving circuit of the working components with higher working voltage (such as the indoor fan 131, the compressor 22, the four-way valve 25, and the outdoor fan 27, which are defined as strong current components in this scheme), and the first board 110 realizes the driving of all strong current components in the air-conditioning indoor unit 10 and the air-conditioning outdoor unit 20.
  • the strong current components are connected to the first board 110 through corresponding interfaces and connected to the corresponding strong current driving circuit;
  • a display board 120 is set in the air-conditioning indoor unit 10, which is used to carry the display control chip 121 that drives the display component on the air-conditioning indoor unit 10 to display.
  • the display board 120 is provided with interfaces for accessing various sensors (detecting and generating digital signals under low-voltage drive, defined as weak current components in this scheme), and various sensors are connected to the display board 120 through corresponding interfaces, and corresponding power supply and control are realized through the display board 120.
  • the air conditioner indoor unit control board is used for the air conditioner indoor unit 10, including an indoor main controller 113, a display control chip 121, a power supply module 114, at least one outdoor strong electric drive circuit, an indoor strong electric drive circuit, a first communication module, a power factor correction circuit 115, a first board 110 and a display board 120;
  • the indoor main controller 113 is arranged on the first board 110, and is used to generate a variety of outdoor strong electric control instructions and indoor strong electric control instructions;
  • at least one outdoor strong electric drive circuit is arranged on the first board 110, and is connected to the indoor main controller 113 and receives the corresponding outdoor strong electric control instructions from the indoor main controller 113, and is used to control the operation of the corresponding outdoor strong electric component according to the corresponding outdoor strong electric control instruction;
  • the indoor strong electric drive circuit is arranged on the first board 110, connected to the indoor main controller 113 and receives the indoor strong electric control instructions from the indoor main controller 113, and is used to control the operation of the corresponding indoor strong electric
  • the power output end of the power factor correction circuit 115 is connected to the drive circuit corresponding to the DC drive strong electric component in the outdoor strong electric drive circuit and the indoor strong electric drive circuit, and is used to supply power to the corresponding DC drive strong electric component;
  • the first communication module is arranged on the first board 110
  • the display control chip 121 is arranged on the display board 120
  • the indoor weak electric component of the air conditioner indoor unit 10 is connected to the display control chip 121;
  • the first communication module and the display control chip 121 are connected with a communication line, and the indoor main controller 113 sends and receives data with the indoor weak electric component through the communication line and the display control chip 121.
  • the drive control of the main working components of the air conditioner outdoor unit 20 is realized in the air conditioner indoor unit 10, and the indoor weak-electric components of the air conditioner indoor unit 10 are connected to the display plate 120, and the indoor weak-electric components are controlled by the indoor main controller 113 through the display control chip 121 on the display plate 120, thereby reducing the control board and optimizing the working environment of the drive circuit of the main working components of the air conditioner outdoor unit 20, eliminating the negative impact of the harsh environment on the main working components of the air conditioner outdoor unit 20, reducing the maintenance cost in the event of a failure, and reducing the cost in all aspects from production, use to maintenance.
  • the drive control of the strong-electric components is realized in the first plate 110, and the drive control of the indoor weak-electric components is realized in the display plate 120, forming a separate drive control of the strong and weak-electric components, avoiding the interference of the strong current on the weak-electric signal, and effectively reducing or even eliminating the possible misoperation caused by the interference of the strong current on the weak-electric signal.
  • the AC power supply is connected to the power supply module 114.
  • the power supply module 114 may have an EMI (Electromagnetic Interference) filter, which can transmit the connected AC AC power supply to the power-consuming equipment without attenuation, greatly attenuating the electromagnetic interference signal transmitted through the power supply, and protecting the power-consuming equipment from harm; at the same time, it can effectively control the electromagnetic interference signal generated by the equipment itself to prevent it from entering the power grid, polluting the electromagnetic environment, and endangering other power-consuming equipment.
  • the AC power filtered by the power supply module 114 can be used to drive AC high-voltage components (such as the four-way valve 25 and the outdoor fan 116).
  • the outdoor fan drive circuit 116 corresponding to the outdoor fan 116 may be a relay, which switches the opening and closing state according to the control instruction.
  • the outdoor fan 116 may only have the state change of AC drive to operate or power off and stop operating.
  • the AC power filtered by the power supply module 114 is also provided to the power factor correction circuit 115, and the power factor correction circuit 115 rectifies the AC power into a DC power supply to drive DC high-voltage components (such as the compressor 22 and the indoor fan 131), and specifically provides the DC power to the corresponding drive circuit, which controls the operation according to the corresponding control instructions.
  • the first communication module may include an optocoupler signal isolation circuit
  • the communication line is a UART signal line
  • the first side of the optocoupler signal isolation circuit is connected to the indoor main controller 113
  • the second side of the optocoupler signal isolation circuit is connected to the display control chip 121 through the UART signal line.
  • the optocoupler signal isolation circuit uses the emitter and the light receiver of the optocoupler as a reference, the side where the emitter and the light receiver are located close to the indoor main controller 113 is the first side, and the side where the emitter and the light receiver are located close to the display control chip 121 is the second side.
  • a stable and safe signal transmission path can be provided between the first board 110 and the display board 120.
  • the electrical isolation of the input circuit and the output circuit, as well as the unidirectionality of the electrical signal during transmission are realized.
  • the interference to the output circuit will not spread to the receiving circuit, and the circuit state of the receiving circuit will not be fed back to the sending circuit, so that good anti-electromagnetic wave interference ability and electrical insulation ability can be achieved.
  • the display panel 120 will be placed near the surface and is a circuit device that the user can touch manually, but because it is isolated from the signal of the first panel 110, there will be no strong electricity.
  • the first panel 110 is locked in the electric control box and can only be touched with tools, so the power supply and signal between the strong current and the weak current must be electrically isolated to ensure that there is no risk of electric shock even if the user touches the weak current part.
  • the optocoupler signal isolation circuit may include a first isolation subcircuit and a second isolation subcircuit; the first isolation subcircuit includes a first transmitting end and a first receiving end, the first transmitting end is connected to the signal output end of the display control chip 121, as the transmitting part of the second side of the optocoupler signal isolation circuit; the first receiving end is connected to the signal input end of the indoor main controller 113, as the receiving part of the first side of the optocoupler signal isolation circuit; the second isolation subcircuit includes a second transmitting end and a second receiving end, the second transmitting end is connected to the signal output end of the indoor main controller 113, as the transmitting part of the first side of the optocoupler signal isolation circuit; the second receiving end is connected to the signal input end of the display control chip 121, as the receiving part of the second side of the optocoupler signal isolation circuit.
  • the first isolation subcircuit is used to implement signal isolation when the display control chip 121 sends a signal to the indoor main controller 113
  • the second isolation subcircuit is used to implement signal isolation when the indoor main controller 113 sends a signal to the display control chip 121, that is, the first side close to the indoor main controller 113 includes the first receiving end and the second transmitting end, and the second side close to the display control chip 121 includes the first transmitting end and the second receiving end.
  • the overall circuit designs of the first isolation sub-circuit and the second isolation sub-circuit can be the same, or they can be different according to signal characteristics. The main difference between the two is that the signal transmission directions are opposite.
  • the first isolation subcircuit includes a first optocoupler
  • the second isolation subcircuit includes a second optocoupler
  • the light emitter of the first optocoupler serves as the first transmitting end
  • the light receiver of the first optocoupler serves as the first receiving end
  • the light emitter of the second optocoupler serves as the second transmitting end
  • the light receiver of the second optocoupler serves as the second receiving end.
  • the first isolation sub-circuit further includes a first resistor R61 , a second resistor R63 , a third resistor R59 , a fourth resistor R60 , a fifth resistor R62 , a sixth resistor R64 , a first capacitor C40 , a second capacitor C41 , and a first transistor Q5 .
  • the first end of the first resistor R61 and the first end of the first capacitor C40 are both connected to the signal input end of the indoor main controller 113, the second end of the first capacitor C40 and the first end of the second resistor R63 are both connected to the power ground, the second end of the first resistor R61 and the second end of the second resistor R63 are both connected to the emitter of the light receiver PC1B of the first photoelectric coupler, the collector of the light receiver PC1B of the first photoelectric coupler is connected to the first voltage (5V voltage is used as an example in FIG. 2), the positive electrode of the light emitter PC1A of the first photoelectric coupler is connected to the first end of the third resistor R59 and the first end of the fourth resistor R60.
  • the second end of the third resistor R59 is connected to the second voltage (12V voltage is used as an example in FIG. 2 ), the cathode of the light emitter PC1A of the first photocoupler is connected to the second end of the fourth resistor R60 and the collector of the first triode Q5, the base of the first triode Q5 is connected to the first end of the second capacitor C41, the first end of the fifth resistor R62 and the first end of the sixth resistor R64, the second end of the fifth resistor R62 is connected to the signal output end of the display control chip 121, and the emitter of the first triode Q5, the second end of the second capacitor C41 and the second end of the sixth resistor R64 are all connected to the power ground.
  • the second isolation subcircuit also includes a seventh resistor R65, an eighth resistor R66, a ninth resistor R68, a tenth resistor R71, an eleventh resistor R67, a twelfth resistor R69, a thirteenth resistor R70, a third capacitor C43, a fourth capacitor C42 and a second transistor Q6.
  • a first end of the seventh resistor R65 is connected to a first voltage
  • a second end of the seventh resistor R65 is connected to a first end of the eighth resistor R66 and a positive electrode of the light emitter PC2A of the second photoelectric coupler
  • a second end of the eighth resistor R66 is connected to a negative electrode of the light emitter PC2A of the second photoelectric coupler and a collector of the second transistor Q6
  • a base of the second transistor Q6 is connected to a first end of the third capacitor C43
  • a second end of the ninth resistor R68 is connected to a signal output end of the indoor main controller 113
  • a second end of the tenth resistor R71, a third capacitor C43 and a fourth capacitor C42 are connected to the second transistor Q6.
  • the second end of the second transistor Q6 and the emitter of the second transistor Q6 are both connected to the signal ground; the collector of the light receiver PC2B of the second photoelectric coupler is connected to the second voltage, the emitter of the light receiver PC2B of the second photoelectric coupler is connected to the first end of the eleventh resistor R67 and the first end of the twelfth resistor R69, the second end of the eleventh resistor R67 is connected to the first end of the fourth capacitor C42, the first end of the thirteenth resistor R70 and the signal input end of the display control chip 121; the second end of the twelfth resistor R69, the second end of the fourth capacitor C42 and the second end of the thirteenth resistor R70 are all connected to the power ground.
  • the first transistor Q5 and the second transistor Q6 and other resistor-capacitor devices form an emitter-follower circuit to further provide sufficient driving current for the photoelectric coupler, so that when the indoor main controller 113 and the display control chip 121 transmit and receive signals, when the signal at the signal output end is high, the signal at the corresponding signal input end for signal reception is also high, thereby ensuring stable, safe and reliable signal transmission.
  • the power supply from the first board 110 to various driving circuits in the first board and to the display board 120 can be realized by the flyback power supply circuit 101, the power output end of the power factor correction circuit 115 is connected to the power input end of the flyback power supply circuit 11A, the flyback power supply circuit 11A is arranged on the first board 110, and the power supply is connected from the power factor correction circuit 115 through the power input end, and the power output end of the flyback power supply circuit 11A supplies power to the indoor main controller 113, the display control chip 121, the outdoor strong power drive circuit, the indoor strong power drive circuit and the first communication module.
  • the buck circuit 102 can cooperate with the flyback power supply circuit 101 to provide the display board 120 with an adaptive voltage as a working power supply, and in Figure 2, a 12V working power supply is provided to the display board 120 as an example.
  • the flyback power supply circuit 11A is connected to a DC power supply from the power factor correction circuit 115.
  • the flyback power supply circuit 11A processes the input DC power supply into a low-voltage DC power supply required for the operation of each control circuit module (including various high-voltage drive circuits, indoor main controller 113 and display control chip 121). Different voltage requirements can be met simultaneously through one flyback power supply circuit 11A.
  • a strong current circuit 111 For the circuit in the first plate 110 above, it can be divided into two parts: a strong current circuit 111 and a weak current circuit 112, wherein a part of the strong current circuit 111 is connected to the AC power supply for processing, and the other part is the indoor main controller 113 and the part on the first side of the optocoupler signal isolation circuit; a part of the weak current circuit 112 is related to the power supply, and is used to receive the low-voltage power generated after the AC power supply is processed, and the other part is the part on the second side of the optocoupler signal isolation circuit.
  • the outdoor strong current drive circuit and the indoor strong current drive circuit can also be regarded as part of the strong current circuit, which is not shown accordingly in Figure 2.
  • a plurality of outdoor strong electric drive circuits include an outdoor fan drive circuit 116, a four-way valve drive circuit 119 and an outdoor compressor drive circuit 117, which are respectively used to drive the outdoor fan 27, the four-way valve 25 and the compressor 22 in the outdoor strong electric components;
  • the outdoor fan drive circuit 116 receives the outdoor fan control instruction from the indoor main controller 113, and is used to control the operation of the outdoor fan 27 according to the outdoor fan control instruction;
  • the four-way valve drive circuit 119 receives the four-way valve control instruction from the indoor main controller 113, and is used to control the operation of the four-way valve 25 according to the four-way valve control instruction;
  • the outdoor compressor drive circuit 117 receives the compressor control instruction from the indoor main controller 113, and is used to control the operation of the compressor 22 according to the compressor control instruction.
  • Various drive circuits can be circuits composed of multiple electronic components installed and connected on the first plate 110, or integrated circuits obtained by packaging multiple electronic components.
  • the outdoor compressor drive circuit 117 of the compressor 22 to one can be specifically implemented with an intelligent power module, which includes power devices, drive circuits and other circuit modules for controlling the compressor 22 to achieve various control targets.
  • the driving circuits of the secondary working components are also arranged on the first plate 110 in the air-conditioning indoor unit 10, and the control and driving of the working components of the air-conditioning indoor unit 10 and the air-conditioning outdoor unit 20 are all completed in the air-conditioning indoor unit 10, thereby optimizing the working environment of the driving circuit of the working component of the air-conditioning outdoor unit 20, eliminating the negative impact of the harsh environment on the driving circuit of the working component of the air-conditioning outdoor unit 20, and extending the service life of the driving circuit of the working component.
  • the air-conditioning indoor unit 10 can be directly maintained indoors, thereby reducing the difficulty of maintenance during a failure, improving maintenance efficiency, and also improving the safety of maintenance personnel.
  • the indoor strong-electric drive circuit includes an indoor fan drive circuit 118, which is used for the indoor fan 131 in the indoor strong-electric component; the indoor fan drive circuit 118 receives the indoor fan control instruction from the indoor main controller 113, and is used to control the operation of the indoor fan 131 according to the indoor fan control instruction.
  • the indoor fan 131 is the main indoor strong-electric component in the air-conditioning indoor unit 10.
  • the air-conditioning indoor unit 10 is configured with other indoor strong-electric components to realize other functions, the same layout and drive mode as the indoor fan 131 can be adopted to realize the comprehensive layout management of the drive circuit corresponding to the strong-electric component.
  • the indoor weak current component also includes an electronic expansion valve 135, which is connected to the display control chip 121, and the indoor main controller 113 also transmits and receives data with the electronic expansion valve 135 through the communication line and the display control chip 121.
  • An online pipe liquid pipe is connected between the evaporator in the air conditioner indoor unit 10 and the condenser of the air conditioner outdoor unit 20.
  • the electronic expansion valve 135 is used to control the flow of the online pipe liquid pipe.
  • the related technology often sets the electronic expansion valve 135 in the air conditioner outdoor unit 20.
  • the indoor weak current component can also include the inner ring sensor 134, the inner disk sensor 133, and the stepper motor 132 in the above-mentioned board outer component.
  • the air conditioner indoor unit control board may also include a second communication module, which is arranged on the first board 110 and connected to the indoor main controller 113.
  • the second communication module is used to send the outdoor unit control instructions of the indoor main controller 113 to the air conditioner outdoor unit 20 and receive the sensor data of the air conditioner outdoor unit 20.
  • the air conditioner outdoor unit 20 may also have various sensors (such as an outer ring sensor 26 for detecting external environmental parameters, an outer disk sensor 24 for detecting external disk parameters), and the control of various sensors is centralized by the indoor main controller 113.
  • an outdoor unit control board may be set correspondingly on the air conditioner outdoor unit 20, and the outdoor unit control board is connected to various sensors of the air conditioner outdoor unit 20.
  • a corresponding interface is set on the outdoor unit control board, and various sensors are connected to the outdoor unit control board through the corresponding interface.
  • the first board 110 transmits control instructions to the outdoor unit control board through the second communication unit, and the outdoor unit control board cooperates with the first board 110 to control the entire air conditioning system, simplifying the connection between the air conditioner indoor unit 10 and the air conditioner outdoor unit 20.
  • FIG1 only shows the basic connection relationship between the various components in the air conditioner outdoor unit 20 and the first board 110, and does not show that the connection relationship is implemented based on the outdoor unit control board.
  • the second communication unit Through the second communication unit, the multi-point connection between the air conditioner indoor unit 10 and the air conditioner outdoor unit 20 can be reduced, simplifying the generation process link and the wiring operation during installation.
  • each sensor transmits sensor data through a corresponding weak wire (e.g., the OAT wire corresponding to the outer ring sensor 26, the OPT wire corresponding to the outer disk sensor 24, and the Td wire corresponding to the exhaust sensor 23).
  • a corresponding weak wire e.g., the OAT wire corresponding to the outer ring sensor 26, the OPT wire corresponding to the outer disk sensor 24, and the Td wire corresponding to the exhaust sensor 23.
  • the four-way valve drive circuit 119 is arranged on the first plate 110, and the outdoor fan drive circuit 116 is arranged on the first plate 110; the four-way valve drive circuit 119 and the outdoor fan drive circuit 116 are respectively provided with relays, and the relays form power supply circuits corresponding to the four-way valve 25 and the outdoor fan 27 through the live wires corresponding to the four-way valve 25 and the outdoor fan 27 (the outdoor fan 27 corresponds to the live wire FAN, and the four-way valve 25 corresponds to the live wire 4-WAY) and the common neutral wire (N).
  • the independent control of the outdoor fan 27 and the four-way valve 25 in the air conditioner outdoor unit 20 can be realized in the air conditioner indoor unit 10.
  • the embodiment of the present application further provides an air conditioner indoor unit 10, which includes the air conditioner indoor unit control board in any of the above embodiments.
  • an air conditioner indoor unit 10 in the embodiment of the present application is specifically implemented, the driving of all working components and the data transmission between all sensors can be centrally implemented in the air conditioner indoor unit 10.
  • the specific implementation has been explained in the previous description of the air conditioner indoor unit control board, and will not be repeated here.
  • an electronic expansion valve 135 is also included; the electronic expansion valve 135 is connected to the display control chip 121, and the indoor main controller 113 also sends and receives data with the electronic expansion valve 135 through the communication line and the display control chip 121.
  • the indoor unit of the air conditioner in the embodiment of the present application includes the control board of the indoor unit of the air conditioner as described above; a plurality of outdoor strong-electric driving circuits are arranged in the first board body in the indoor unit of the air conditioner, and the driving control of the main working components of the outdoor unit of the air conditioner is realized in the indoor unit of the air conditioner, and the indoor weak-electric components of the indoor unit of the air conditioner are connected to the display board body, and the indoor weak-electric components are controlled by the indoor main controller through the display control chip on the display board body, thereby reducing the control board while optimizing the working environment of the driving circuit of the main working components of the outdoor unit of the air conditioner, eliminating the negative impact of the harsh environment on the main working components of the outdoor unit of the air conditioner, reducing the maintenance cost in case of failure, and comprehensively reducing the cost from production, use to maintenance.
  • the driving control of the strong-electric components is realized in the first board body, and the driving control of the indoor weak-electric components is realized in the display board body, forming a separate driving control of the strong and weak-electric components, avoiding the interference of the strong current on the weak-electric signal, and effectively reducing or even eliminating the possible misoperation caused by the interference of the strong current on the weak-electric signal.
  • the embodiment of the present application also provides a split air conditioning system, including an air conditioner outdoor unit and any of the air conditioner indoor units described above.
  • the air conditioner indoor unit and the air conditioner outdoor unit are used together as necessary components of the split air conditioning system.
  • the specific implementation method of the improvement related to this solution has been described in the corresponding embodiment of the air conditioner indoor unit control panel, and will not be repeated here.
  • the split air conditioning system using the air conditioner indoor unit described above has corresponding beneficial effects.

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Abstract

一种空调内机控制板、空调内机(10)和分体式空调系统，通过将多种室外强电驱动电路设置于空调内机(10)中的第一板体(110)，在空调内机(10)实现对空调外机(20)主要做功器件的驱动控制，同时将空调内机(10)的室内弱电组件连接到显示板体(120)，由室内主控器(113)通过显示板体(120)上的显示控制芯片(121)对室内弱电组件进行控制，从而在减少了控制板的同时，优化了空调外机(20)主要做功组件的驱动电路的工作环境，消除了恶劣环境对空调外机(20)主要做功器件的负面影响，降低了故障时的维修成本，从生产、使用到维护的各环节全面降低成本。在第一板体(110)和显示板体(120)分别实现对强电组件和弱电组件的驱动控制，形成强弱电组件的分离驱动控制，有效减少甚至消除强电电流对弱电信号干扰导致的误操作。

Description

空调内机控制板、空调内机和分体式空调系统
本申请要求于2022年10月10日提交中国专利局、申请号为202222678019.4、申请名称为“空调内机控制板、空调内机和分体式空调系统”的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及换热设备技术领域，尤其涉及空调内机控制板、空调内机和分体式空调系统。
背景技术
空调包括安装于室内的空调内机和安装于室外的空调外机，通过空调内机和空调外机的配合工作实现室内和室外的热量交换，达到调节室内温度的效果。
空调内机和空调外机分别安装有控制板，控制板上设置有对应于空调内机和空调外机中做功组件的驱动电路，驱动电路驱动对应的做功组件实现室内温度的调节，另外加上空调内机通过显示板实现各种信息显示，现有空调的基础的功能实现需要三块控制板。在空调的应用场景中，空调外机所处的室外开放式环境，可能存在高温、低温、高湿、灰尘等恶劣环境因素，都对空调外机的控制板可靠性和使用寿命存在负面影响，当安装于外墙的空调外机中控制板发生故障时，维修困难。整体上，现有空调系统的生产成本、使用时的损耗成本和维修成本都较高。
申请内容
本申请提供了空调内机控制板、空调内机和分体式空调系统，以解决现有空调系统的生产成本、使用时的损耗成本和维修成本都较高的技术问题。
第一方面，本申请实施例提供了空调内机控制板，用于空调内机，该空调内机控制板包括室内主控器、显示控制芯片、供电模块、至少一种室外强电驱动电路、室内强电驱动电路、第一通讯模块、功率因数校正电路、第一板体和显示板体；
室内主控器设置于第一板体，用于生成多种室外强电控制指令和室内强电控制指令；
至少一种室外强电驱动电路设置于第一板体，均与室内主控器连接并从室内主控器接收对应的室外强电控制指令，用于根据对应的室外强电控制指令控制对应的室外强电组件运转；
室内强电驱动电路设置于第一板体，与室内主控器连接并从室内主控器接收室内强电控制指令，用于根据室内强电控制指令控制对应的室内强电组件运转；
供电模块设置于第一板体并接入市电电源，供电模块的电源输出端与多种室外强电驱动电路以及室内强电驱动电路中，对应于交流驱动强电组件的驱动电路连接，用于向对应的交流驱动强电组件供电；供电模块的电源输出端还与功率因数校正电路的电源输入端连接；
功率因数校正电路设置于第一板体，并通过电源输入端从供电模块接入电源，功率因数校正电路的电源输出端与至少一种室外强电驱动电路以及室内强电驱动电路中，对应于直流驱动强电组件的驱动电路连接，用于向对应的直流驱动强电组件供电；
第一通讯模块设置于第一板体，显示控制芯片设置于显示板体，空调内机的室内弱电组件连接到显示控制芯片；
第一通讯模块和显示控制芯片连接有通讯线，室内主控器通过通讯线以及显示控制芯片与室内弱电组件进行数据收发。
第二方面，本申请实施例还提供了空调内机，包括第一方面的空调内机控制板。
第三方面，本申请实施例还提供了分体式空调系统，包括空调外机和第二方面的空调内机。
上述空调内机控制板、空调内机和分体式空调系统中，包括室内主控器、显示控制芯片、供电模块、至少一种室外强电驱动电路、室内强电驱动电路、第一通讯模块、功率因数校正电路、第一板体和显示板体；室内主控器设置于第一板体，用于生成多种室外强电控制指令和室内强电控制指令；至少一种室外强电驱动电路设置于第一板体，均与室内主控器连接并从室内主控器接收对应的室外强电控制指令，用于根据对应的室外强电控制指令控制对应的室外强电组件运转；室内强电驱动电路设置于第一板体，与室内主控器连接并从室内主控器接收室内强电控制指令，用于根据室内强电控制指令控制对应的室内强电组件运转；供电模块设置于第一板体并接入市电电源，供电模块的电源输出端与多种室外强电驱动电路以及室内强电驱动电路中，对应于交流驱动强电组件的驱动电路连接，用于向对应的交流驱动强电组件供电；供电模块的电源输出端还与功率因数校正电路的电源输入端连接；功率因数校正电路设置于第一板体，并通过电源输入端从供电模块接入市电，功率因数校正电路的电源输出端与至少一种室外强电驱动电路以及室内强电驱动电路中，对应于直流驱动强电组件的驱动电路连接，用于向对应的直流驱动强电组件供电；第一通讯模块设置于第一板体，显示控制芯片设置于显示板体，空调内机的室内弱电组件连接到显示控制芯片；第一通讯模块和显示控制芯片连接有通讯线，室内主控器通过通讯线以及显示控制芯片与室内弱电组件进行数据收发。通过将至少一种室外强电驱动电路设置于空调内机中的第一板体，在空调内机实现对空调外机主要做功器件的驱动控制，同时将空调内机的室内弱电组件连接到显示板体，由室内主控器通过显示板体上的显示控制芯片对室内弱电组件进行控制，从而在减少了控制板的同时，优化了空调外机主要做功组件的驱动电路的工作环境，消除了恶劣环境对空调外机主要做功器件的负面影响，降低了故障时的维修成本，从生产、使用到维护的各环节全面降低成本。在第一板体实现对强电组件的驱动控制，在显示板体实现对室内弱电组件的驱动控制，形成强弱电组件的分离驱动控制，避免强电电流对弱电信号的干扰，有效减少甚至消除强电电流对弱电信号干扰可能导致的误操作。
附图说明
图1为本申请实施例提供的一种空调内机控制板应用于空调的连接示意图。
图2为本申请实施例提供的光耦信号隔离电路的电路原理图。
具体实施方式
下面结合附图和实施例对本申请作进一步的详细说明。可以理解的是，此处所描述的具体实施例用于解释本申请，而非对本申请的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
需要注意的是，本申请说明书没有穷举所有可选的实施方式，本领域技术人员在阅读本申请说明书后，应该能够想到，只要技术特征不互相矛盾，那么技术特征的任意组合均可以构成可选的实施方式。
下面对本申请各实施例进行详细说明。
请参考图1，其是本申请实施例提供的一种空调内机控制板应用于分体式空调系统的连接示意图，该空调内机控制板应用于分体式空调系统的空调内机10时，重新对控制板承载的各种驱动电路以及各种板外组件的连接关系进行布局调整。板外组件包括空调内机10的各种传感器(包括但不限于用于检测内部环境参数的内环传感器134、用于检测内盘管参数的内盘传感器133等)和各种做功组件(包括但不限于室内风机131、步进电机132等)。对应于板外组件不同的工作电压需求和驱动需求，在空调内机10内设置第一板体110，用于承载工作电压较高的做功组件(例如室内风机131、压缩机22、四通阀25、室外风机27，本方案中定义为强电组件)的驱动电路，在第一板体110实现对空调内机10和空调外机20中所有强电组件的驱动，强电组件通过对应的接口连接到第一板体110并接入对应的强电驱动电路； 另外在空调内机10内设置显示板体120，用于承载驱动空调内机10上的显示组件进行显示的显示控制芯片121，显示板体120设置用于接入各种传感器(在低压驱动下进行检测生成数字信号，本方案中定义为弱电组件)的接口，各种传感器通过对应的接口连接到显示板体120，通过显示板体120实现对应供电和控制。
具体到本申请实施例中，该空调内机控制板，用于空调内机10，包括室内主控器113、显示控制芯片121、供电模块114、至少一种室外强电驱动电路、室内强电驱动电路、第一通讯模块、功率因数校正电路115、第一板体110和显示板体120；室内主控器113设置于第一板体110，用于生成多种室外强电控制指令和室内强电控制指令；至少一种室外强电驱动电路设置于第一板体110，均与室内主控器113连接并从室内主控器113接收对应的室外强电控制指令，用于根据对应的室外强电控制指令控制对应的室外强电组件运转；室内强电驱动电路设置于第一板体110，与室内主控器113连接并从室内主控器113接收室内强电控制指令，用于根据室内强电控制指令控制对应的室内强电组件运转；供电模块114设置于第一板体110并接入市电电源，供电模块114的电源输出端与多种室外强电驱动电路以及室内强电驱动电路中，对应于交流驱动强电组件的驱动电路连接，用于向对应的交流驱动强电组件供电；供电模块114的电源输出端还与功率因数校正电路115的电源输入端连接；功率因数校正电路115设置于第一板体110，并通过电源输入端从供电模块114接入电源，功率因数校正电路115的电源输出端与室外强电驱动电路以及室内强电驱动电路中，对应于直流驱动强电组件的驱动电路连接，用于向对应的直流驱动强电组件供电；第一通讯模块设置于第一板体110，显示控制芯片121设置于显示板体120，空调内机10的室内弱电组件连接到显示控制芯片121；第一通讯模块和显示控制芯片121连接有通讯线，室内主控器113通过通讯线以及显示控制芯片121与室内弱电组件进行数据收发。
本申请实施例中，通过将多种室外强电驱动电路设置于空调内机10中的第一板体110，在空调内机10实现对空调外机20主要做功器件的驱动控制，同时将空调内机10的室内弱电组件连接到显示板体120，由室内主控器113通过显示板体120上的显示控制芯片121对室内弱电组件进行控制，从而在减少了控制板的同时，优化了空调外机20主要做功组件的驱动电路的工作环境，消除了恶劣环境对空调外机20主要做功器件的负面影响，降低了故障时的维修成本，从生产、使用到维护的各环节全面降低成本。在第一板体110实现对强电组件的驱动控制，在显示板体120实现对室内弱电组件的驱动控制，形成强弱电组件的分离驱动控制，避免强电电流对弱电信号的干扰，有效减少甚至消除强电电流对弱电信号干扰可能导致的误操作。
在具体供电过程中，由供电模块114接入市电电源，供电模块114中可以有EMI(Electromagnetic Interference，电磁干扰)滤波器，对接入的交流的市电电源可以毫无衰减地传输到用电设备上，大大衰减经电源传入的电磁干扰信号，保护用电设备免受其害；同时，又能有效地控制设备本身产生的电磁干扰信号，防止它进入电网，污染电磁环境，危害其他用电设备。供电模块114滤波后的交流电可以用于驱动交流强电组件(例如四通阀25和室外风机116)，当然，不是直接给到交流强电组件，而是给到对应的驱动电路，由驱动电路根据相应的控制指令控制运转，例如室外风机116对应的室外风机驱动电路116可能就是一个继电器，相应根据控制指令进行开合状态切换，室外风机116可能只有交流电驱动进行运转或断电停止运转的状态变化。供电模块114滤波后的交流电还提供到功率因数校正电路115，功率因数校正电路115将交流电整流为直流电源驱动直流强电组件(例如压缩机22、室内风机131)，具体将直流电给到对应的驱动电路，由驱动电路根据相应的控制指令控制运转。
在具体实现时，第一通讯模块可以包括光耦信号隔离电路，通讯线为UART信号线，光耦信号隔离电路的第一侧与室内主控器113相连，光耦信号隔离电路的第二侧通过UART信号线与显示控制芯片121相连。光耦信号隔离电路以光电耦合器的发光器和受光器为参考，靠近室内主控器113一侧的发光器和受光器所在的一侧为第一侧，靠近显示控制芯片121一 侧的发光器和受光器所在的一侧为第二侧，通过光电耦合器的信号隔离，可以在第一板体110和显示板体120之间提供稳定和安全的信号传输路径。通过光电耦合器中电→光→电的单向转换，实现输入电路和输出电路的电气隔离，以及电信号在传输时的单向性，在转换过程中，输出电路受到的干扰不会扩散到接收电路，接收电路的电路状态也不会反馈到发送电路，从而可以实现良好的抗电磁波干扰能力和电绝缘能力。而且在本方案的应用场景中，显示板体120会放在靠近表面的位置，属于用户可以手动接触的电路器件，但是因为与第一板体110的信号隔离，不会有强电存在。而第一板体110是锁在电控盒里的需要使用工具才能才开碰到，所以强电和弱电之间的电源和信号都要经过电气隔离，保证弱电部分即使用户触碰到也不会有触电风险。
在具体实现时，光耦信号隔离电路可以包括第一隔离子电路和第二隔离子电路；第一隔离子电路包括第一发送端和第一接收端，第一发送端与显示控制芯片121的信号输出端相连，作为光耦信号隔离电路的第二侧的发送部分；第一接收端与室内主控器113的信号输入端相连，作为光耦信号隔离电路的第一侧的接收部分；第二隔离子电路包括第二发送端和第二接收端，第二发送端与室内主控器113的信号输出端相连，作为光耦信号隔离电路的第一侧的发送部分；第二接收端与显示控制芯片121的信号输入端相连，作为光耦信号隔离电路的第二侧的接收部分。第一隔离子电路用于实现显示控制芯片121向室内主控器113发送信号时的信号隔离，第二隔离子电路用于实现室内主控器113向显示控制芯片121发送信号时的信号隔离，即靠近室内主控器113的第一侧包括第一接收端和第二发送端，靠近显示控制芯片121的第二侧包括第一发送端和第二接收端。第一隔离子电路和第二隔离子电路的整体电路设计可以相同，也可以根据信号特点有所区别，二者的主要区别在于信号发送方向相反。
对应于前文所述基于光电耦合器实现的光耦信号隔离电路，具体到第一隔离子电路和第二隔离子电路中，第一隔离子电路包括第一光电耦合器，第二隔离子电路包括第二光电耦合器；第一光电耦合器的发光器作为第一发送端，第一光电耦合器的受光器作为第一接收端；第二光电耦合器的发光器作为第二发送端，第二光电耦合器的受光器作为第二接收端。通过两个光电耦合器，可以以简单的隔离策略实现信号的隔离单向传输。
在一具体实施例中，请参考图2，第一隔离子电路还包括第一电阻R61、第二电阻R63、第三电阻R59、第四电阻R60、第五电阻R62、第六电阻R64、第一电容C40、第二电容C41、和第一三级管Q5。
第一电阻R61的第一端以及第一电容C40的第一端均与室内主控器113的信号输入端相连，第一电容C40的第二端以及第二电阻R63的第一端均接电源地，第一电阻R61的第二端以及第二电阻R63的第二端均与第一光电耦合器的受光器PC1B的发射极相连，第一光电耦合器的受光器PC1B的集电极接入第一电压(图2中示例性采用5V电压)，第一光电耦合器的发光器PC1A的正极与第三电阻R59的第一端以及第四电阻R60的第一端相连，第三电阻R59的第二端接入第二电压(图2中示例性采用12V电压)，第一光电耦合器的发光器PC1A的负极与第四电阻R60的第二端以及第一三级管Q5的集电极相连，第一三级管Q5的基极与第二电容C41的第一端、第五电阻R62的第一端以及第六电阻R64的第一端相连，第五电阻R62的第二端与显示控制芯片121的信号输出端相连，第一三级管Q5的发射极、第二电容C41的第二端以及第六电阻R64的第二端均接电源地。
第二隔离子电路还包括第七电阻R65、第八电阻R66、第九电阻R68、第十电阻R71、第十一电阻R67、第十二电阻R69、第十三电阻R70、第三电容C43、第四电容C42和第二三极管Q6。第七电阻R65的第一端接入第一电压，第七电阻R65的第二端与第八电阻R66的第一端以及第二光电耦合器的发光器PC2A的正极相连，第八电阻R66的第二端与第二光电耦合器的发光器PC2A的负极以及第二三极管Q6的集电极相连，第二三极管Q6的基极与第三电容C43的第一端、第十电阻R71的第一端以及第九电阻R68的第一端相连，第九电阻R68的第二端与室内主控器113的信号输出端相连，第十电阻R71的第二端、第三电容C43 的第二端以及第二三极管Q6的发射极均接信号地；第二光电耦合器的受光器PC2B的集电极接入第二电压，第二光电耦合器的受光器PC2B的发射极与第十一电阻R67的第一端以及第十二电阻R69的第一端相连，第十一电阻R67的第二端与第四电容C42的第一端、第十三电阻R70的第一端以及显示控制芯片121的信号输入端相连；第十二电阻R69的第二端、第四电容C42的第二端以及第十三电阻R70的第二端均接电源地。
在两个光电耦合器控制信号收发的基础上，第一三级管Q5和第二三极管Q6以及其它阻容器件组成射随电路，为光电耦合器进一步提供足够的驱动电流，使得室内主控器113与显示控制芯片121进行信号收发时，信号输出端的信号高时，对应进行信号接收的信号输入端的信号也高，从而保证信号传输的稳定安全可靠。
另外在具体实现过程中，如图1和图2所示，第一板体110向第一板体中的各种驱动电路以及向显示板体120的供电可以由反激电源电路101实现，功率因数校正电路115的电源输出端与反激电源电路11A的电源输入端连接，反激电源电路11A设置于第一板体110，并通过电源输入端从功率因数校正电路115接入电源，反激电源电路11A的电源输出端向室内主控器113、显示控制芯片121、室外强电驱动电路、室内强电驱动电路以及第一通讯模块供电。同时可以由降压电路102配合反激电源电路101向显示板体120提供适配电压作为工作电源，在图2中示例性向显示板体120提供12V的工作电源。在反激电源电路11A的具体供电过程中，反激电源电路11A从功率因数校正电路115接入的是直流电源，反激电源电路11A将输入的直流电源处理成各个控制电路模块(包括各种强电驱动电路、室内主控器113和显示控制芯片121)工作所需的低压直流电源，通过一个反激电源电路11A可以同时满足不同的电压需求。
对于以上第一板体110中的电路，可以分为强电电路111和弱电电路112两部分，其中强电电路111中的一部分接入交流电源进行处理，另一部分是室内主控器113以及光耦信号隔离电路中第一侧的部分；弱电电路112中的一部分和电源相关，用于接收交流电源处理后生成的低压电源，另一部分是光耦信号隔离电路中第二侧的部分。在实际处理时，室外强电驱动电路和室内强电驱动电路也可以视为强电电路的一部分，在图2中未相应示出。
在一个可选的实施例中，多种室外强电驱动电路包括室外风机驱动电路116、四通阀驱动电路119和室外压缩机驱动电路117，分别用于驱动室外强电组件中的室外风机27、四通阀25和压缩机22；室外风机驱动电路116从室内主控器113接收室外风机控制指令，用于根据室外风机控制指令控制室外风机27运转；四通阀驱动电路119从室内主控器113接收四通阀控制指令，用于根据四通阀控制指令控制四通阀25运转；室外压缩机驱动电路117从室内主控器113接收压缩机控制指令，用于根据压缩机控制指令控制压缩机22运转。各种驱动电路可以是多个电子元件在第一板体110上安装连接后组成的电路，也可以是多个电子元件封装得到的集成电路，例如压缩机22对一个的室外压缩机驱动电路117可以以智能功率模块进行具体实施，其中包括功率器件、驱动电路等控制压缩机22实现各种控制目标的电路模块。
在具体进行室外强电驱动电路的布局时，除了压缩机22这一主要强电做功组件，同时将次要做功组件(例如四通阀25和室外风机27)的驱动电路设置于空调内机10中的第一板体110，将空调内机10和空调外机20的做功组件的控制驱动均在空调内机10完成，优化了空调外机20的做功组件的驱动电路的工作环境，消除了恶劣环境对空调外机20的做功组件的驱动电路的负面影响，延长了做功组件的驱动电路的使用寿命，而且空调外机20的驱动电路故障后，不需要从室外取下空调外机20进行维修，直接在室内对空调内机10进行维修即可，降低了故障时的维修难度，提高了维修效率，而且也提高了维修人员的安全保障。
在另一个可选的实施例中，室内强电驱动电路包括室内风机驱动电路118，用于室内强电组件中的室内风机131；室内风机驱动电路118从室内主控器113接收室内风机控制指令，用于根据室内风机控制指令控制室内风机131运转。室内风机131是空调内机10中主要的室内强电组件，在空调内机10配置其它室内强电组件实现其它功能时，可以采用与室内风机 131相同的布局和驱动方式，实现对强电组件对应的驱动电路的综合布局管理。
在具体基于显示板体120的控制实现时，室内弱电组件还包括电子膨胀阀135，电子膨胀阀135与显示控制芯片121连接，室内主控器113还通过通讯线以及显示控制芯片121与电子膨胀阀135进行数据收发。空调内机10中的蒸发器和空调外机20的冷凝器之间连接有联机管液管，电子膨胀阀135用于对联机管液管的流量进行控制，相关技术常将电子膨胀阀135设置空调外机20中，将电子膨胀阀135设置于空调内机10，可以缩短电子膨胀阀135的通讯线长，避免了电子膨胀阀135布置于空调外机20时，拉线至空调内机10的控制板导致的线路过长、成本增加、抗干扰能力弱等问题。在空调内机中，室内弱电组件还可以包括前文所说板外组件中的内环传感器134、内盘传感器133和步进电机132等。
为实现对空调外机的状态控制，空调内机控制板还可包括第二通讯模块，第二通讯模块设置于第一板体110并与室内主控器113连接，第二通讯模块用于将室内主控器113的外机控制指令发送到空调外机20，并接收空调外机20的传感器数据。
具体实现时，如图1所示，空调外机20中除了压缩机22，还可以有各种传感器(例如用于检测外部环境参数的外环传感器26、用于检测外盘参数的外盘传感器24)，对各种传感器的控制集中由室内主控器113完成，此时可以对应在空调外机20设置外机控制小板，外机控制小板与空调外机20的各种传感器相连，具体在外机控制小板上设置对应的接口，各种传感器通过对应的接口与外机控制小板连接。第一板体110通过第二通讯单元与外机控制小板进行控制指令的传输，由外机控制小板与第一板体110协作对整个空调系统进行控制，简化了空调内机10与空调外机20之间的连线。图1仅示出了空调外机20中各部件与第一板体110的基础连接关系，未示出该连接关系基于外机控制小板实现。通过第二通讯单元，可以减少空调内机10与空调外机20之间的多点连线，简化生成工序环节和安装时的接线操作。
请参考图1，对应不同的部件类型有不同的连接方式，其中各个传感器通过对应的弱电线进行传感器数据的传输(例如外环传感器26对应的OAT线，外盘传感器24对应的OPT线，排气传感器23对应的Td线)。四通阀驱动电路119设置于第一板体110，室外风机驱动电路116设置于第一板体110；四通阀驱动电路119和室外风机驱动电路116分别对应设置有继电器，继电器通过分别对应于四通阀25和室外风机27的火线(室外风机27对应火线FAN，四通阀25对应火线4-WAY)以及共用的零线(N)，形成分别对应于四通阀25和室外风机27的供电回路。通过分别构建供电回路，可以实现在空调内机10对空调外机20中的室外风机27和四通阀25的独立控制。
各个做功组件对应驱动电路的实现方式以及各个传感器的数据传输在相关技术已有实现，不是本方案的改进重点，在此不做赘述。
本申请实施例另外还提供了一种空调内机10，该空调内机10包括前文任一实施例中的空调内机控制板。具体实现本申请实施例中的空调内机10时，可以在空调内机10集中实现对所有做功组件的驱动以及与所有传感器之间的数据传输。具体实现在前文描述空调内机控制板时已有说明，在此不予重复阐述。在该空调内机中，还包括电子膨胀阀135；电子膨胀阀135与显示控制芯片121连接，室内主控器113还通过通讯线以及显示控制芯片121与电子膨胀阀135进行数据收发。
整体而言，本申请实施例中的空调内机，包括前文所述的空调内机控制板；将多种室外强电驱动电路设置于空调内机中的第一板体，在空调内机实现对空调外机主要做功器件的驱动控制，同时将空调内机的室内弱电组件连接到显示板体，由室内主控器通过显示板体上的显示控制芯片对室内弱电组件进行控制，从而在减少了控制板的同时，优化了空调外机主要做功组件的驱动电路的工作环境，消除了恶劣环境对空调外机主要做功器件的负面影响，降低了故障时的维修成本，从生产、使用到维护的各环节全面降低成本。在第一板体实现对强电组件的驱动控制，在显示板体实现对室内弱电组件的驱动控制，形成强弱电组件的分离驱动控制，避免强电电流对弱电信号的干扰，有效减少甚至消除强电电流对弱电信号干扰可能 导致的误操作。
本申请实施例另外还提供了一种分体式空调系统，包括空调外机和前文任一项的空调内机。空调内机和空调外机作为分体式空调系统的必要组成配合使用，跟本方案相关改进的具体实现方式在空调内机控制板对应实施例中已有描述，在此不重复说明。整体上，使用前文所述空调内机的分体式空调系统，对应具备相应的有益效果。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括要素的过程、方法、商品或者设备中还存在另外的相同要素。
注意，上述仅为本申请的较佳实施例及所运用技术原理。本领域技术人员会理解，本申请不限于这里的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本申请的保护范围。因此，虽然通过以上实施例对本申请进行了较为详细的说明，但是本申请不仅仅限于以上实施例，在不脱离本申请构思的情况下，还可以包括更多其他等效实施例，而本申请的范围由所附的权利要求范围决定。

Claims (15)

  1. 一种空调内机控制板，用于空调内机，其中，包括室内主控器(113)、显示控制芯片(121)、供电模块(114)、至少一种室外强电驱动电路、室内强电驱动电路、第一通讯模块、功率因数校正电路(115)、第一板体(110)和显示板体(120)；
    所述室内主控器(113)设置于所述第一板体(110)，用于生成多种室外强电控制指令和室内强电控制指令；
    所述至少一种室外强电驱动电路设置于所述第一板体(110)，均与所述室内主控器(113)连接并从所述室内主控器(113)接收对应的室外强电控制指令，用于根据对应的室外强电控制指令控制对应的室外强电组件运转；
    所述室内强电驱动电路设置于所述第一板体(110)，与所述室内主控器(113)连接并从所述室内主控器(113)接收所述室内强电控制指令，用于根据所述室内强电控制指令控制对应的室内强电组件运转；
    所述供电模块(114)设置于所述第一板体(110)并接入市电电源，所述供电模块(114)的电源输出端与所述多种室外强电驱动电路以及室内强电驱动电路中，对应于交流驱动强电组件的驱动电路连接，用于向对应的交流驱动强电组件供电；所述供电模块(114)的电源输出端还与所述功率因数校正电路(115)的电源输入端连接；
    所述功率因数校正电路(115)设置于所述第一板体(110)，并通过电源输入端从所述供电模块(114)接入电源，所述功率因数校正电路(115)的电源输出端与所述至少一种室外强电驱动电路以及室内强电驱动电路中，对应于直流驱动强电组件的驱动电路连接，用于向对应的直流驱动强电组件供电；所述第一通讯模块设置于所述第一板体(110)，所述显示控制芯片(121)设置于所述显示板体(120)，所述空调内机的室内弱电组件连接到所述显示控制芯片(121)；
    所述第一通讯模块和所述显示控制芯片(121)连接有通讯线，所述室内主控器(113)通过所述通讯线以及所述显示控制芯片(121)与所述室内弱电组件进行数据收发。
  2. 根据权利要求1所述的空调内机控制板，其中，还包括反激电源电路(11A)，所述功率因数校正电路(115)的电源输出端还与所述反激电源电路(11A)的电源输入端连接，所述反激电源电路(11A)设置于所述第一板体(110)，并通过电源输入端从所述功率因数校正电路(115)接入电源，所述反激电源电路(11A)的电源输出端向所述室内主控器(113)、显示控制芯片(121)、室外强电驱动电路、室内强电驱动电路以及第一通讯模块供电。
  3. 根据权利要求1所述的空调内机控制板，其中，所述第一通讯模块包括光耦信号隔离电路，所述通讯线为UART信号线，所述光耦信号隔离电路的第一侧与所述室内主控器(113)相连，所述光耦信号隔离电路的第二侧通过所述UART信号线与所述显示控制芯片(121)相连。
  4. 根据权利要求3所述的空调内机控制板，其中，所述光耦信号隔离电路包括第一隔离子电路和第二隔离子电路；
    所述第一隔离子电路包括第一发送端和第一接收端，所述第一发送端与所述显示控制芯片(121)的信号输出端相连，作为所述光耦信号隔离电路的第二侧的发送部分；所述第一接收端与所述室内主控器(113)的信号输入端相连，作为所述光耦信号隔离电路的第一侧的接收部分；
    所述第二隔离子电路包括第二发送端和第二接收端，所述第二发送端与所述室内主控器(113)的信号输出端相连，作为所述光耦信号隔离电路的第一侧的发送部分；所述第二接收端与所述显示控制芯片(121)的信号输入端相连，作为所述光耦信号隔离电路的第二侧的接收部分。
  5. 根据权利要求4所述的空调内机控制板，其中，所述第一隔离子电路包括第一光电耦合器，所述第二隔离子电路包括第二光电耦合器；
    所述第一光电耦合器的发光器作为所述第一发送端，所述第一光电耦合器的受光器作为所述第一接收端；
    所述第二光电耦合器的发光器作为所述第二发送端，所述第二光电耦合器的受光器作为 所述第二接收端。
  6. 根据权利要求5所述的空调内机控制板，其中，所述第一隔离子电路还包括第一电阻(R61)、第二电阻(R63)、第三电阻(R59)、第四电阻(R60)、第五电阻(R62)、第六电阻(R64)、第一电容(C40)、第二电容(C41)、和第一三级管(Q5)；
    所述第一电阻(R61)的第一端以及所述第一电容(C40)的第一端均与所述室内主控器(113)的信号输入端相连，所述第一电容(C40)的第二端以及所述第二电阻(R63)的第一端均接信号地，所述第一电阻(R61)的第二端以及所述第二电阻(R63)的第二端均与所述第一光电耦合器的受光器(PC1B)的发射极相连，所述第一光电耦合器的受光器(PC1B)的集电极接入第一电压，所述第一光电耦合器的发光器(PC1A)的正极与所述第三电阻(R59)的第一端以及所述第四电阻(R60)的第一端相连，所述第三电阻(R59)的第二端接入第二电压，所述第一光电耦合器的发光器(PC1A)的负极与所述第四电阻(R60)的第二端以及所述第一三级管(Q5)的集电极相连，所述第一三级管(Q5)的基极与所述第二电容(C41)的第一端、第五电阻(R62)的第一端以及第六电阻(R64)的第一端相连，所述第五电阻(R62)的第二端与所述显示控制芯片(121)的信号输出端相连，所述第一三级管(Q5)的发射极、第二电容(C41)的第二端以及第六电阻(R64)的第二端均接电源地。
  7. 根据权利要求5或6所述的空调内机控制板，其中，所述第二隔离子电路还包括第七电阻(R65)、第八电阻(R66)、第九电阻(R68)、第十电阻(R71)、第十一电阻(R67)、第十二电阻(R69)、第十三电阻(R70)、第三电容(C43)、第四电容(C42)和第二三极管(Q6)；
    所述第七电阻(R65)的第一端接入第一电压，所述第七电阻(R65)的第二端与所述第八电阻(R66)的第一端以及所述第二光电耦合器的发光器(PC2A)的正极相连，所述第八电阻(R66)的第二端与所述第二光电耦合器的发光器(PC2A)的负极以及所述第二三极管(Q6)的集电极相连，所述第二三极管(Q6)的基极与所述第三电容(C43)的第一端、第十电阻(R71)的第一端以及第九电阻(R68)的第一端相连，所述第九电阻(R68)的第二端与所述室内主控器(113)的信号输出端相连，所述第十电阻(R71)的第二端、第三电容(C43)的第二端以及第二三极管(Q6)的发射极均接信号地；所述第二光电耦合器的受光器(PC2B)的集电极接入第二电压，所述第二光电耦合器的受光器(PC2B)的发射极与所述第十一电阻(R67)的第一端以及第十二电阻(R69)的第一端相连，所述第十一电阻(R67)的第二端与所述第四电容(C42)的第一端、第十三电阻(R70)的第一端以及所述显示控制芯片(121)的信号输入端相连；所述第十二电阻(R69)的第二端、第四电容(C42)的第二端以及第十三电阻(R70)的第二端均接电源地。
  8. 根据权利要求1所述的空调内机控制板，其中，所述多种室外强电驱动电路包括室外风机驱动电路(116)、四通阀驱动电路(119)和室外压缩机驱动电路(117)；
    所述室外风机驱动电路(116)从所述室内主控器(113)接收所述室外风机控制指令，用于根据所述室外风机控制指令控制室外风机(27)运转；
    所述四通阀驱动电路(119)从所述室内主控器(113)接收所述四通阀控制指令，用于根据所述四通阀控制指令控制四通阀(25)运转；
    所述室外压缩机驱动电路(117)从所述室内主控器(113)接收所述压缩机控制指令，用于根据所述压缩机控制指令控制压缩机(22)运转。
  9. 根据权利要求1所述的空调内机控制板，其中，所述室内强电驱动电路包括室内风机驱动电路(118)；
    所述室内风机驱动电路(118)从所述室内主控器(113)接收所述室内风机控制指令，用于根据所述室内风机控制指令控制室内风机(131)运转。
  10. 根据权利要求1所述的空调内机控制板，其中，室内弱电组件包括电子膨胀阀(135)，所述电子膨胀阀(135)与所述显示控制芯片(121)连接，所述室内主控器(113)还通过所述通讯线以及所述显示控制芯片(121)与所述电子膨胀阀(135)进行数据收发。
  11. 根据权利要求1所述的空调内机控制板，其中，所述室内弱电组件包括内环传感器 (134)、内盘传感器(133)和步进电机(132)中的至少一种。
  12. 根据权利要求1所述的空调内机控制板，其中，还包括第二通讯模块，所述第二通讯模块设置于所述第一板体(110)并与所述室内主控器(113)连接，所述第二通讯模块用于将所述室内主控器(113)的外机控制指令发送到空调外机(20)，并接收所述空调外机(20)的传感器数据。
  13. 一种空调内机，其中，包括权利要求1-8任一项所述的空调内机控制板。
  14. 根据权利要求13所述的空调内机，其中，还包括电子膨胀阀(135)；
    所述电子膨胀阀(135)与所述显示控制芯片(121)连接，所述室内主控器(113)还通过所述通讯线以及所述显示控制芯片(121)与所述电子膨胀阀(135)进行数据收发。
  15. 一种分体式空调系统，其中，包括空调外机和权利要求1-12任一项所述的空调内机。
PCT/CN2022/130308 2022-10-10 2022-11-07 空调内机控制板、空调内机和分体式空调系统 WO2024077694A1 (zh)

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