WO2021027199A1 - 用于识别低待机功耗室外机的电路和空调 - Google Patents

用于识别低待机功耗室外机的电路和空调 Download PDF

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Publication number
WO2021027199A1
WO2021027199A1 PCT/CN2019/123962 CN2019123962W WO2021027199A1 WO 2021027199 A1 WO2021027199 A1 WO 2021027199A1 CN 2019123962 W CN2019123962 W CN 2019123962W WO 2021027199 A1 WO2021027199 A1 WO 2021027199A1
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Prior art keywords
circuit
outdoor unit
power consumption
standby power
low standby
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PCT/CN2019/123962
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English (en)
French (fr)
Inventor
董晓莉
杨晓东
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青岛海尔空调器有限总公司
海尔智家股份有限公司
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Publication of WO2021027199A1 publication Critical patent/WO2021027199A1/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
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks

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  • This application relates to the technical field of air conditioners, for example, to a circuit and an air conditioner for identifying low standby power consumption outdoor units.
  • the outdoor unit with low standby power consumption can cut off all the power supplies of all outdoor units during standby, and only supply power to the control circuit of the indoor unit, reducing power consumption.
  • Low standby power outdoor units and non-low standby power outdoor units use different communication protocols and different control strategies. Before the indoor unit communicates with the outdoor unit, first determine the standby mode of the outdoor unit, and then select the correct communication protocol and The control strategy controls the outdoor unit.
  • the signal line used for communication between the indoor unit and the outdoor unit is prone to backflow, which makes it easy to judge the outdoor unit as a non-low standby power outdoor unit, which reduces The accuracy of the judgment result.
  • the embodiments of the present disclosure provide a circuit and air conditioner for identifying an outdoor unit with low standby power consumption, so as to solve the technical problem of low accuracy of the judgment result when determining whether the outdoor unit is an outdoor unit with low standby power consumption.
  • the circuit for identifying an outdoor unit with low standby power consumption includes:
  • the internal communication circuit communicates with the external communication circuit in the outdoor unit through the signal line;
  • the conduction direction switching circuit is connected in series with the DC power supply branch of the signal line;
  • the conduction direction of the conduction direction switching circuit is opposite to the current direction of the DC power supply branch.
  • the air conditioner includes the circuit for identifying outdoor units with low standby power consumption provided in the foregoing embodiments.
  • the conduction direction switching circuit in the first conduction state can cut off the loop of the outdoor unit communication circuit in the outdoor unit, reducing the return flow in the signal line, and the internal unit communication circuit has no Signal, reduce the false judgment rate, and improve the accuracy of judgment results when judging whether the outdoor unit is a low standby power outdoor unit.
  • FIG. 1 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption according to an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure
  • FIG. 7 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption according to an embodiment of the present disclosure
  • Fig. 9 is a schematic diagram of an indoor control circuit and an outdoor control circuit provided by an embodiment of the present disclosure.
  • the term “switch” includes two states of “on” and “off”.
  • the switch is a controllable switch, which can be switched between “on” and “off” states through electrical signals.
  • the switch includes mechanical switches, semiconductor switches, and switching circuits in the form of digital circuits or analog circuits.
  • the mechanical switch can be a relay.
  • the indoor unit is an outdoor unit with low standby power consumption.
  • the outdoor unit When the outdoor unit is in a power-off state, the outdoor unit is powered on through a specific startup circuit. In the embodiments of the present disclosure, it is used to identify low standby power consumption.
  • the circuit of the outdoor unit can be applied to the specific starting circuit in the above-mentioned room.
  • the circuits in the low standby power outdoor unit and the non-low standby power outdoor unit are different.
  • the low standby power outdoor unit and the non-low standby power outdoor unit use different control communication protocols and different control strategies.
  • the indoor unit first recognizes the standby type of the outdoor unit, and then selects the appropriate communication protocol and control strategy according to the standby type of the outdoor unit to realize the control of the outdoor unit.
  • the outdoor unit is a low standby power outdoor unit; if the communication circuit in the indoor unit can receive signals, the outdoor unit is non-low standby power consumption The outdoor unit.
  • Fig. 1 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure.
  • the circuit for identifying the outdoor unit with low standby power consumption includes:
  • the internal unit communication circuit 110 communicates with the external unit communication circuit 210 in the outdoor unit through the signal line 111;
  • the conduction direction switching circuit 120 is connected in series with the DC power supply branch 130 of the signal line 111;
  • the conduction direction of the conduction direction switching circuit 120 is opposite to the current direction of the DC power supply branch 130.
  • the conduction direction switching circuit 120 in the first conduction state can cut off the loop of the outdoor unit communication circuit 210 in the outdoor unit, reducing the return flow in the signal line 111, and the internal unit
  • the communication circuit 110 has no signal, which reduces the rate of misjudgment.
  • the circuit for identifying the outdoor unit with low standby power consumption further includes: an electromagnetic interference filter 170, a rectifier circuit 140, a switching power supply 150 and a controller 160, the input end of the electromagnetic interference filter 170 and the power distribution terminal
  • the output of the electromagnetic interference filter 170 is connected to the input of the rectifier circuit 140
  • the output of the rectifier circuit 140 is connected to the input of the switching power supply 150
  • the output of the switching power supply 150 is connected to the power input of the controller 160
  • the switch The power supply 150 supplies power to the controller 160
  • the controller 160 is connected to the internal machine communication circuit 110
  • the controller 160 transmits control signals to the internal machine communication circuit 110
  • the internal machine communication circuit 110 transmits detection signals to the controller 160.
  • the conduction direction switching circuit 120, the DC power supply branch 130, and the internal machine communication circuit 110 are connected in series.
  • the DC power supply branch 130, the conduction direction switching circuit 120, and the internal machine communication circuit 110 should be connected in sequence.
  • the series connection method is regarded as the same as this embodiment.
  • the conduction direction switching circuit 120 is in the first conduction state
  • the indoor communication circuit is in the signal receiving state
  • the received signal is transmitted to the controller 160.
  • the controller 160 determines whether it is available. After receiving the signal, determine the standby type of the outdoor unit, then switch the conduction direction switching circuit 120 to the second conduction state, and according to the standby type of the outdoor unit, select the communication protocol and control strategy with the outdoor unit.
  • the communication protocol and control strategy corresponding to the standby type based on the selected communication protocol and control strategy, communicate with the outdoor unit and control the outdoor unit, and the air conditioner enters the normal working state.
  • Fig. 2 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure.
  • the conduction direction switching circuit 120 includes:
  • the first diode D1 The first diode D1;
  • the first switch K1 is connected in parallel with the first diode D1;
  • the conduction direction switching circuit 120 is in the first conduction state.
  • This embodiment can switch the conduction direction of the circuit.
  • the end of the circuit where the anode of the first diode D1 is located is the first end
  • the end of the circuit where the cathode of the first diode D1 is located is the second end
  • the conduction direction switching circuit 120 is a unidirectional conduction circuit
  • the conduction direction is from the first end to the second end; when the first switch K1 is on In the on state, the conduction direction switching circuit 120 is in the second conduction state.
  • the conduction direction switching circuit 120 is a bidirectional conduction circuit, which can be conducted from the first end to the second end, or from the second end to the first end. The end is turned on.
  • Fig. 3 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure.
  • the DC power supply branch 130 includes:
  • the second diode D2 The second diode D2;
  • the filter circuit 131 has one end connected to the cathode of the second diode D2, and the other end of the filter circuit 131 is grounded.
  • the DC power supply branch 130 can convert AC power into DC power to supply power to the signal line 111, so that the indoor unit and the outdoor unit can communicate successfully.
  • Fig. 4 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure.
  • the filter circuit 131 includes an electrolytic capacitor C1 and a non-electrolytic capacitor C2, and the electrolytic capacitor C1 and the non-electrolytic capacitor C2 are connected in parallel.
  • the electrolytic capacitor C1 can filter low-order harmonics, and the non-electrolytic capacitor C2 can filter high-order harmonics.
  • Fig. 5 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure.
  • the DC power supply branch 130 further includes: a resistor R connected in series with the cathode of the second diode D2; wherein one end of the filter circuit 131 is directly connected to the cathode of the second diode D2, or, the filter circuit One end of 131 is connected to the cathode of the second diode D2 through a resistor R.
  • the resistor R can effectively limit the current in the signal line 111.
  • 6 and 7 are schematic diagrams of circuits for identifying outdoor units with low standby power consumption provided by embodiments of the present disclosure.
  • the N-phase input terminal of the rectifier circuit 140 is connected to the power input terminal of the conduction direction switching circuit 120.
  • the rectifier circuit 140 provides electrical energy for the DC power supply branch 130.
  • the conduction direction switching circuit 120 When the conduction direction switching circuit 120 is in the first conduction state, the conduction direction switching circuit 120 and the DC power supply branch 130 can intercept current, reducing the occurrence of the signal line 111.
  • the accuracy of the judgment result can be improved.
  • the cathode of the first diode D1 is connected to the N-phase input terminal of the rectifier circuit 140, and the anode of the first diode D1 is connected to the anode of the second diode D2.
  • connection in this embodiment refers to electrical connection, that is, the cathode of the first diode D1 and the N phase of the rectifier circuit 140 can be conducted.
  • FIG. 8 is a schematic diagram of a circuit for identifying an outdoor unit with low standby power consumption provided by an embodiment of the present disclosure.
  • the circuit for identifying the outdoor unit with low standby power consumption further includes a second switch K2, and the second switch K2 is connected in series with the conduction direction switching circuit 120.
  • the second switch K2 is turned on, the circuit for identifying the outdoor unit with low standby power consumption can work, and the second switch K2 is turned off, the circuit for identifying the outdoor unit with low standby power consumption is in an open state and cannot work.
  • the circuit for identifying the low standby power consumption outdoor unit further includes a third switch K3, wherein one end of the third switch K3 is connected to the signal line 111, and the other end of the third switch K3 is connected to the power supply of the DC power supply branch 130 Input terminal connection.
  • the third switch K3 When an outdoor unit is an outdoor unit with low standby power consumption, the third switch K3 is turned on, which can turn on the power supply circuit of the outdoor unit to realize the process of starting the outdoor unit.
  • the circuit for identifying the outdoor unit with low standby power consumption further includes a third diode D3, and the third diode D3 is connected in series on the signal line 111.
  • the above-mentioned embodiment when the air conditioner works normally, the current in the signal line 111 flows from the indoor unit to the outdoor unit. Based on the current flow, the above-mentioned embodiment provides a diode setting method; in the technical solution of this application, It also includes a scenario where the current in the signal line 111 is popularized by an outdoor unit to an indoor unit. In this scenario, the setting mode of the diode in the above-mentioned embodiment can be changed, which will not be repeated here.
  • Fig. 9 is a schematic diagram of an indoor control circuit and an outdoor control circuit provided by an embodiment of the present disclosure.
  • connection terminals L, N, and C of the indoor unit circuit are respectively connected to the connection terminals L, N, and C in the outdoor unit circuit.
  • the input end of the first electromagnetic interference filter 171 is connected to the connection terminals L and N, and the output end of the first electromagnetic interference filter 171 is connected to the input end of the first rectifier circuit 141.
  • the DC output terminal is connected with the input terminal of the first switching power supply 151, the first switch K1 supplies power to the first controller 161, and the first controller 161 is communicatively connected with the indoor communication circuit; in the outdoor unit, the second electromagnetic interference filter 271 The input end of the second electromagnetic interference filter 271 is connected to the input end of the second rectification circuit 241, the DC output end of the second rectification circuit 241 is connected to the second switching power supply 251, The second switching power supply 251 supplies power to the second controller 262, and the second controller 262 is communicatively connected to the outdoor communication circuit.
  • the fourth switch K4 is arranged on the N phase between the terminal and the second electromagnetic interference filter 271.
  • the five switch K5 is a single-pole double-throw switch.
  • the first end is connected to the terminal C, the second end is connected to one end of the fourth switch K4, and the third end is connected to the outdoor unit signal line.
  • One end of the fourth switch K4 is connected to the Two electromagnetic interference filter 271 is connected to one end.
  • the outdoor unit is an outdoor unit with low standby power consumption.
  • the first switch K1 when the air conditioner is running normally, the first switch K1 is in the on state, the second switch K2 is in the on state, the third switch K3 is in the off state, the fourth switch K4 is in the on state, and the fifth switch
  • the first terminal and the third terminal of K5 are connected; when the air conditioner is on standby, the fourth switch K4 is off, and the first terminal and the second terminal of the fifth switch K5 are on, and the outdoor unit is in a power-off state;
  • the first switch K1 is closed, the second switch K2 is closed, the third switch K3 is closed, the power supply loop of the outdoor unit is turned on, and the second controller 262 of the outdoor unit is powered on to control the fourth switch K4 to close,
  • the first terminal and the third terminal of the switch K5 are turned on.
  • the third switch K3 is turned off, and the air conditioner can work normally.
  • the embodiment of the present disclosure provides an air conditioner.
  • the air conditioner includes the circuit for identifying the outdoor unit with low standby power consumption provided in the foregoing embodiments.
  • the first element can be called the second element, and similarly, the second element can be called the first element, as long as all occurrences of the "first element” are renamed consistently and all occurrences "Second component" can be renamed consistently.
  • the first element and the second element are both elements, but they may not be the same element.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

本申请涉及空调技术领域，公开一种用于识别低待机功耗室外机的电路。该用于识别低待机功耗室外机的电路包括：通过信号线与室外机中的外机通讯电路进行通讯的内机通讯电路，与信号线的直流供电支路串联的导通方向切换电路，其中，在导通方向切换电路处于第一导通状态时，导通方向切换电路的导通方向与直流供电支路的电流方向相反。在判断室外机是否为低待机功耗室外机时，采用该用于识别低待机功耗室外机的电路，可提高判断结果的准确度，本申请还公开一种空调。

Description

用于识别低待机功耗室外机的电路和空调
本申请基于申请号为201910753389.X、申请日为2019年08月15日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本申请涉及空调技术领域，例如涉及一种用于识别低待机功耗室外机的电路和空调。
背景技术
目前，低待机功耗的室外机在待机时，可切断所有室外机的所有电源，只为室内机的控制电路供电，降低了功耗。低待机功耗室外机和非低待机功耗室外机采用不同的通讯协议以及不同的控制策略，在室内机与室外机通讯前，首先判断室外机的待机模式，之后再选择正确的通讯协议以及控制策略控制室外机。
在实现本公开实施例的过程中，发现相关技术中至少存在如下问题：
在判断室外机是否为低待机功耗室外机时，用于在室内机和室外机之间通讯的信号线中容易出现回流，导致容易将室外机判断为非低待机功耗室外机，降低了判断结果的准确度。
发明内容
为了对披露的实施例的一些方面有基本的理解，下面给出了简单的概括。所述概括不是泛泛评述，也不是要确定关键/重要组成元素或描绘这些实施例的保护范围，而是作为后面的详细说明的序言。
本公开实施例提供了一种用于识别低待机功耗室外机的电路和空调，以解决在判断室外机是否为低待机功耗室外机时出现的判断结果准确度低的技术问题。
在一些实施例中，所述用于识别低待机功耗室外机的电路包括：
内机通讯电路，通过信号线与室外机中的外机通讯电路进行通讯；
导通方向切换电路，与所述信号线的直流供电支路串联；
其中，在所述导通方向切换电路处于第一导通状态时，所述导通方向切换电路的导通方向与所述直流供电支路的电流方向相反。
在一些实施例中，所述空调包括前述实施例提供的用于识别低待机功耗室外机的电路。
本公开实施例提供的用于识别低待机功耗室外机的电路和空调，可以实现以下技术效果：
在室外机为低待机功耗室外机时，处于第一导通状态的导通方向切换电路可截止室外 机中的外机通讯电路的回路，减少信号线中出现的回流，内机通讯电路无信号，降低误判断率，在判断室外机是否为低待机功耗室外机时，可提高判断结果的准确度。
以上的总体描述和下文中的描述仅是示例性和解释性的，不用于限制本申请。
附图说明
一个或一个以上实施例通过与之对应的附图进行示例性说明，这些示例性说明和附图并不构成对实施例的限定，附图中具有相同参考数字标号的元件示为类似的元件，并且其中：
图1是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图2是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图3是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图4是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图5是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图6是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图7是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图8是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图；
图9是本公开实施例提供的室内控制电路和室外控制电路的示意图。
附图标记：
110、内机通讯电路；111、信号线；120、导通方向切换电路；130、直流供电支路；131、滤波电路；140、整流电路；141、第一整流电路；150、开关电源；151、第一开关电源；160、控制器；161、第一控制器；170、电磁干扰滤波器；171、第一电磁干扰滤波器；210、外机通讯电路；241、第二整流电路；251、第二开关电源；261、第二控制器；271、第二电磁干扰滤波器；K1、第一开关；K2、第二开关；K3、第三开关；K4、第四开关；K5、第五开关；D1、第一二极管；D2、第二二极管；D3、第三二极管；C1、电解电容；C2、非电解电容；R、电阻。
具体实施方式
为了能够更加详尽地了解本公开实施例的特点与技术内容，下面结合附图对本公开实施例的实现进行详细阐述，所附附图仅供参考说明之用，并非用来限定本公开实施例。在以下的技术描述中，为方便解释起见，通过多个细节以提供对所披露实施例的充分理解。然而，在没有这些细节的情况下，一个或一个以上实施例仍然可以实施。在其它情况下，为简化附图，熟知的结构和装置可以简化展示。
在本公开实施例中，术语“开关”包括“接通”和“断开”两种状态。该开关为可控开关，可通过电信号控制开关在“接通”与“断开”两种状态之间切换。该开关包括机械开关、半导体开关以及由数字电路形式的或模拟电路形式的开关电路。例如，机械开关可 以是继电器。
在一些场景中，室内机为低待机功耗室外机，当室外机处于断电状态时，室内机中通过特定的启动电路为室外机上电，本公开实施例中的用于识别低待机功耗室外机的电路可应用于上述室内中的特定启动电路。
在一些场景中，低待机功耗室外机和非低待机功耗室外机中电路不同，低待机功耗室外机和非低待机功耗室外机采用不同的控制通讯协议和不同的控制策略。在空调上电后，室内机首先识别出室外机的待机类型，再根据室外机的待机类型选择合适的通讯协议和控制策略，实现对室外机的控制。空调上电后，若室内机中的通讯电路无法接收信号，则该室外机为低待机功耗室外机；若室内机中的通讯电路可接收到信号，则该室外机为非低待机功耗室外机。
图1是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，用于识别低待机功耗室外机的电路包括：
内机通讯电路110，通过信号线111与室外机中的外机通讯电路210进行通讯；
导通方向切换电路120，与信号线111的直流供电支路130串联；
其中，在导通方向切换电路120处于第一导通状态时，导通方向切换电路120的导通方向与直流供电支路130的电流方向相反。
在室外机为低待机功耗室外机时，处于第一导通状态的导通方向切换电路120可截止室外机中的外机通讯电路210的回路，减少信号线111中出现的回流，内机通讯电路110无信号，降低误判断率，在判断室外机是否为低待机功耗室外机时，可提高判断结果的准确度。
在该实施例中，用于识别低待机功耗室外机的电路还包括：电磁干扰滤波器170、整流电路140、开关电源150和控制器160，电磁干扰滤波器170的输入端与配电端子连接，电磁干扰滤波器170的输出端与整流电路140的输入连接，整流电路140的输出端与开关电源150的输入端连接，开关电源150的输出端与控制器160的电源输入端连接，开关电源150为控制器160供电，控制器160与内机通讯电路110连接，控制器160向内机通讯电路110传输控制信号，内机通讯电路110向控制器160传输检测信号。在该实施例中，导通方向切换电路120、直流供电支路130、内机通讯电路110依次串联，但是，应该把直流供电支路130、导通方向切换电路120、内机通讯电路110依次串联的连接方式，视为与该实施例相同。
在一些应用场景中，空调上电后，导通方向切换电路120处于第一导通状态，室内通讯电路处于信号接收状态，并将接收的信号传输至控制器160中，控制器160根据是否可接收到信号，判断出室外机的待机类型，之后将导通方向切换电路120切换至第二导通状态，并根据室外机的待机类型，在预置通讯协议和控制策略中选择与室外机的待机类型相对应的通讯协议和控制策略，基于选择的通讯协议和控制策略，与室外机进行通信并控制室外机，空调进入正常工作状态。
图2是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，导通方向切换电路120包括：
第一二极管D1；
第一开关K1，与第一二极管D1并联；
其中，在第一开关K1断开时，导通方向切换电路120处于第一导通状态。
该实施例可实现电路导通方向的切换。在导通方向切换电路120中，以第一二极管D1的阳极所在的电路一端为第一端，以第一二极管D1的阴极所在的电路一端为第二端，在第一开关K1断开时，导通方向切换电路120处于第一导通状态，该导通方向切换电路120为单向导通电路，导通方向为由第一端指向第二端；在第一开关K1处于接通状态时，导通方向切换电路120处于第二导通状态，该导通方向切换电路120为双向导通电路，既可由第一端向第二端导通，也可由第二端向第一端导通。
图3是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，直流供电支路130包括：
第二二极管D2；
滤波电路131，一端连接第二二极管D2的阴极，滤波电路131的另一端接地。
该直流供电支路130可将交流电转化为直流电，为信号线111供电，使得室内机和室外机成功通信。
图4是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，滤波电路131包括：电解电容C1和非电解电容C2，电解电容C1和非电解电容C2并联。
在该滤波电容中，电解电容C1可过滤低次谐波，非电解电容C2可过滤高次谐波。
图5是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，直流供电支路130还包括：电阻R，串联在第二二极管D2的阴极；其中，滤波电路131的一端直接连接第二二极管D2的阴极，或，滤波电路131的一端通过电阻R连接第二二极管D2的阴极。
在该实施例中，电阻R可有效对信号线111中的电流进行限流。
图6和图7是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，整流电路140的N相输入端与导通方向切换电路120的电源输入端连接。
该整流电路140为直流供电支路130提供电能，在导通方向切换电路120处于第一导通状态时，该导通方向切换电路120和直流供电支路130可截流，减少信号线111中出现的回流，在判断室外机是否为低待机功耗室外机时，可提高判断结果的准确性。
可选地，第一二极管D1的阴极与整流电路140的N相输入端连接，第一二极管D1的阳极与第二二极管D2的阳极连接。
该实施例中的“连接”指的是电连接，即，第一二极管D1的阴极与整流电路140的 N相可导通。
图8是本公开实施例提供的用于识别低待机功耗室外机的电路的示意图。
在该实施例中，用于识别低待机功耗室外机的电路还包括第二开关K2，第二开关K2与导通方向切换电路120串联。第二开关K2接通，该用于识别低待机功耗室外机的电路可工作，第二开关K2断开，该用于识别低待机功耗室外机的电路处于断路状态，无法工作。
可选地，用于识别低待机功耗室外机的电路还包括第三开关K3，其中，第三开关K3一端与信号线111连接，第三开关K3的另一端与直流供电支路130的电源输入端连接。
当一个室外机为低待机功耗室外机时，第三开关K3接通，可接通室外机的供电回路，实现启动室外机的过程。
可选地，用于识别低待机功耗室外机的电路还包括第三二极管D3，第三二极管D3串联在信号线111上。
在上述实施例中，当空调正常工作时，信号线111中的电流由室内机流向室外机，基于该电流的流向，上述实施例中提供了二极管的设置方式；在本申请的技术方案中，还包括信号线111中的电流由室外机流行室内机的场景，在该场景中，改变上述实施例中二极管的设置方式即可，这里不再一一赘述。
图9是本公开实施例提供的室内控制电路和室外控制电路的示意图。
在该实施例中，室内机电路的接线端子L、N、C分别与室外机电路中的接线端子L、N、C连接。在室内机中，第一电磁干扰滤波器171的输入端与接线端子L、N连接，第一电磁干扰滤波器171的输出端与第一整流电路141的输入端连接，第一整流电路141的直流输出端与第一开关电源151的输入端连接，第一开关K1向第一控制器161供电，第一控制器161与室内通讯电路通讯连接；在室外机中，第二电磁干扰滤波器271的输入端与接线端子L、N连接，第二电磁干扰滤波器271的输出端与第二整流电路241的输入端连接，第二整流电路241的直流输出端与第二开关电源251连接，第二开关电源251为第二控制器262供电，第二控制器262与室外通讯电路通讯连接，其中，第四开关K4设置在接线端子与第二电磁干扰滤波器271之间的N相上，第五开关K5为单刀双掷开关，第一端与接线端子C连接，第二端连接至第四开关K4的一端，第三端连接至室外机信号线上，该第四开关K4的一端与第二电磁干扰滤波器271连接的一端。在该实施例中，室外机为低待机功耗室外机。
在一些应用场景中，在空调正常运行时，第一开关K1处于接通状态，第二开关K2处于接通状态，第三开关K3处于断开状态第四开关K4处于接通状态，第五开关K5的第一端和第三端接通；在空调待机时，第四开关K4断开，第五开关K5的第一端和第二端接通，室外机处于掉电状态；在空调启动时，第一开关K1闭合，第二开关K2闭合，第三开关K3闭合，室外机的供电回路到导通，室外机的第二控制器262上电，即可控制第四开关K4闭合，第五开关K5的第一端和第三端导通，此时在室内机中，第三开关K3 断开，空调即可正常工作。
本公开实施例提供了一种空调。
在一些实施例中，空调包括前述实施例提供的用于识别低待机功耗室外机的电路。
以上描述和附图充分地示出了本公开的实施例，以使本领域的技术人员能够实践它们。实施例仅代表可能的变化。一些实施例的部分和特征可以被包括在或替换其他实施例的部分和特征。本公开实施例的范围包括权利要求书的整个范围，以及权利要求书的所有可获得的等同物。当用于本申请中时，虽然术语“第一”、“第二”等可能会在本申请中使用以描述各元件，但这些元件不应受到这些术语的限制。这些术语仅用于将一个元件与另一个元件区别开。比如，在不改变描述的含义的情况下，第一元件可以叫做第二元件，并且同样地，第二元件可以叫做第一元件，只要所有出现的“第一元件”一致重命名并且所有出现的“第二元件”一致重命名即可。第一元件和第二元件都是元件，但可以不是相同的元件。
本说明书描述了本申请的实施例的示例，并不意味着这些实施例说明并描述了本申请的所有可能形式。附图无需按比例绘制；可放大或缩小一些特征以显示特定部件的细节。公开的具体结构和功能细节不应当作限定解释，仅仅是教导本领域技术人员以多种形式实施本申请的代表性基础。本领域内的技术人员应理解，参考任一附图说明和描述的多个特征可以与一个或多个其它附图中说明的特征组合以形成未明确说明或描述的实施例。说明的组合特征提供用于典型应用的代表实施例。然而，与本申请的教导一致的特征的多种组合和变型可以根据需要用于特定应用或实施。
以上仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种用于识别低待机功耗室外机的电路，其特征在于，包括：
    内机通讯电路，通过信号线与室外机中的外机通讯电路进行通讯；
    导通方向切换电路，与所述信号线的直流供电支路串联；
    其中，在所述导通方向切换电路处于第一导通状态时，所述导通方向切换电路的导通方向与所述直流供电支路的电流方向相反。
  2. 根据权利要求1所述的电路，其特征在于，所述导通方向切换电路包括：
    第一二极管；
    第一开关，与所述第一二极管并联；
    其中，在所述第一开关断开时，所述导通方向切换电路处于所述第一导通状态。
  3. 根据权利要求1所述的电路，其特征在于，所述直流供电支路包括：
    第二二极管；
    滤波电路，一端连接所述第二二极管的阴极，所述滤波电路的另一端接地。
  4. 根据权利要求3所述的电路，其特征在于，所述滤波电路包括：
    电解电容；
    非电解电容，与所述电解电容并联。
  5. 根据权利要求3所述的电路，其特征在于，所述直流供电支路还包括：
    电阻，串联在所述第二二极管的阴极；
    所述滤波电路的一端直接连接所述第二二极管的阴极，或，所述滤波电路的一端通过所述电阻连接所述第二二极管的阴极。
  6. 根据权利要求1至5任一项所述电路，其特征在于，还包括：
    整流电路，所述整流电路的N相输入端与所述导通方向切换电路的电源输入端连接。
  7. 根据权利要求6所述的电路，其特征在于，
    第一二极管的阴极与所述整流电路的N相输入端连接，所述第一二极管的阳极与所述第二二极管的阳极连接。
  8. 根据权利要求1至5任一项所述的电路，其特征在于，还包括：
    第二开关，与所述导通方向切换电路串联。
  9. 根据权利要求1至5任一项所述的电路，其特征在于，还包括：
    第三开关，一端与所述信号线连接，所述第三开关的另一端与所述直流供电支路的电源输入端连接。
  10. 一种空调，其特征在于，包括权利要求1至9中任一项所述的用于识别低待机功耗室外机的电路。
PCT/CN2019/123962 2019-08-15 2019-12-09 用于识别低待机功耗室外机的电路和空调 WO2021027199A1 (zh)

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