EP2241831A1 - Klimaanlage mit reduziertem Standby Energieverbrauch der Ausseneinheit auf Basis einer dreiadrigen Kabelverbindung zwischen Innen- und Ausseneinheit - Google Patents

Klimaanlage mit reduziertem Standby Energieverbrauch der Ausseneinheit auf Basis einer dreiadrigen Kabelverbindung zwischen Innen- und Ausseneinheit Download PDF

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Publication number
EP2241831A1
EP2241831A1 EP10002461A EP10002461A EP2241831A1 EP 2241831 A1 EP2241831 A1 EP 2241831A1 EP 10002461 A EP10002461 A EP 10002461A EP 10002461 A EP10002461 A EP 10002461A EP 2241831 A1 EP2241831 A1 EP 2241831A1
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EP
European Patent Office
Prior art keywords
outdoor
unit
indoor
power
relay
Prior art date
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Granted
Application number
EP10002461A
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English (en)
French (fr)
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EP2241831A8 (de
EP2241831B1 (de
Inventor
Toshiya Sugiyama
Hitoshi Tanifuji
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Publication of EP2241831A1 publication Critical patent/EP2241831A1/de
Publication of EP2241831A8 publication Critical patent/EP2241831A8/de
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Publication of EP2241831B1 publication Critical patent/EP2241831B1/de
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Classifications

    • 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
    • F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located 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
    • F24F11/52—Indication arrangements, e.g. displays
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • 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
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode

Definitions

  • the present invention relates to an air conditioner.
  • Patent Literature 1 JP-A-2007-225128 , (Claim 1)
  • Patent Literature 1 in a case of an outdoor power receiving system in which the utility power is supplied from the outdoor unit to the indoor unit, there is a problem that control cannot be achieved as-is without increasing the number of cores of the connecting cable between the indoor unit and the outdoor unit from three.
  • An air conditioner includes: an indoor unit and an outdoor unit, the indoor unit and the outdoor unit being connected by a three core cable including a power line, a common line, and a signal line to distribute utility power supplied to either one of the outdoor unit or the indoor unit via the power line and the common line, the indoor unit includes: an outdoor activation relay configured to open and close a connection between the power line and the signal line; and an indoor control unit is configured to operate the outdoor activation relay to supply the utility power between the signal line and the common line, and the indoor control unit opens the connection between the power line and the signal line in a standby condition.
  • the invention is configured to open the connection between the power line and the signal line by the outdoor activation relay in the standby condition, and no utility power is supplied between the signal line and the common line, so that reduction of the standby condition power consumption is achieved.
  • Fig. 1 is an electric component system block diagram of an air conditioner according to Embodiment 1.
  • an air conditioner 1 includes an indoor unit 2 and an outdoor unit 3 in Embodiment 1.
  • the indoor unit 2 includes an indoor terminal base 30.
  • the indoor terminal base 30 includes terminals S1, S2, and S3.
  • the outdoor unit 3 includes an outdoor terminal base 31.
  • the outdoor terminal base 31 includes terminal.s L, N, S1, S2, and S3.
  • the indoor unit 2 and the outdoor unit 3 are connected by a three core cable including a power line 8, a power signal common line 9, and a signal line 16.
  • the power line 8 is connected to the terminal S1 on the indoor terminal base 30 and the terminal S1 on the outdoor terminal base 31.
  • the power signal common line 9 is connected to the terminal S2 on the indoor terminal base 30 and the terminal S2 on the outdoor terminal base 31.
  • the signal line 16 is connected to the terminal S3 on the indoor terminal base 30 and the terminal S3 on the outdoor terminal base 31.
  • Utility power 7 is connected to the terminals L and N on the outdoor terminal base 31 of the outdoor unit 3.
  • the terminal L on the outdoor terminal base 31 is connected to the terminal S1 on the outdoor terminal base 31.
  • the terminal N on the outdoor terminal base 31 is connected to the terminal S2 on the outdoor terminal base 31. Accordingly, the utility power 7 supplied to the terminals L and N on the outdoor terminal base 31 is supplied from the terminals S1 and S2 on the outdoor terminal base 31 to the terminals S1 and S2 on the indoor terminal base 30 of the indoor unit 2 via the power line 8 and the power signal common line 9.
  • the indoor unit 2 includes an indoor rectifier 4, an indoor control unit 5, an indoor communication circuit unit 6, a receiving unit 18, an outdoor activation relay 22, an outdoor power supply line 24, and a power receiving system data unit 26.
  • the indoor rectifier 4 is connected to the terminals S1 and S2 of the indoor terminal base 30.
  • the indoor rectifier 4 converts an AC voltage to a given DC voltage, and supplies the same to the indoor control unit 5.
  • the indoor communication circuit unit 6 is connected to the terminals S2 and S3 of the indoor terminal base 30.
  • the indoor communication circuit unit 6 carries out communication with an outdoor communication circuit unit 14 (described later) of the outdoor unit 3 via the signal line 16 and the power signal common line 9.
  • the power receiving system data unit 26 is connected to the indoor control unit 5.
  • the power receiving system data unit 26 is, for example, a storage device, and is configured to be connected and disconnected by a switching operation of a jumper cable or a switch.
  • the power receiving system data unit 26 stores information used for discriminating between an indoor power receiving system and an outdoor power receiving system.
  • the power receiving system data unit 26 also stores information used for discriminating whether or not the outdoor unit 3 connected to the indoor unit 2 includes an outdoor relay 11 (described later) and an inrush current preventing relay 19 (described later) and allows reduction of power consumption in a standby condition (hereinafter, referred to as "standby condition power consumption reduction capability information").
  • the receiving unit 18 is connected to the indoor control unit 5.
  • the receiving unit 18 receives signals from a remote controller 17 and transmits the signals to the indoor control unit 5.
  • the indoor control unit 5 operates the outdoor activation relay 22.
  • the indoor control unit 5 also operates the indoor communication circuit unit 6 to perform transmission and reception of a variety of operation signals with respect to the outdoor unit 3.
  • the outdoor power supply line 24 is connected at one end thereof to the terminal S1 on the indoor terminal base 30 and at the other end thereof to the outdoor activation relay 22.
  • the outdoor activation relay 22 is configured to switch the connection from a connection between the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6 to a connection between the terminal S3 on the indoor terminal base 30 and the outdoor power supply line 24, or vice versa. In other words, the outdoor activation relay 22 opens and closes the connection between the power line 8 and the signal line 16. When the outdoor activation relay 22 is operated, the utility power 7 is supplied between the signal line 16 and the power signal common line 9.
  • the outdoor activation relay 22 connects the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6 in a stationary state and, when the operation is effected by the indoor control unit 5, opens the connection between the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6, and connects the terminal S3 on the indoor terminal base 30 to the outdoor power supply line 24.
  • the indoor unit 2 is provided with an indoor heat exchanger, an indoor fan, a sensor, a display as mechanical systems.
  • the outdoor unit 3 includes an inrush current preventing resistance 10, the outdoor relay 11, an outdoor rectifier 12, a communication circuit power supply unit 13, the outdoor communication circuit unit 14, an outdoor control unit 15, the inrush current preventing relay 19, an inrush current preventing relay coil 20, a power supply cutoff relay 21, an inverter circuit 23, and a capacitor 25.
  • the outdoor relay 11 is connected to at one end thereof to the terminal L on the outdoor terminal base 31 and at the other end thereof to the outdoor rectifier 12. In the stationary state, the outdoor relay 11 opens a contact point (normally open) and, when the operation is effected by the outdoor control unit 15, closes the contact point (hereinafter, also referred to as "short circuit").
  • the inrush current preventing resistance 10 is provided in parallel with the outdoor relay 11.
  • the inrush current preventing resistance 10 is connected at one end thereof to the terminal L of the outdoor terminal base 31 via the inrush current preventing relay 19 and at the other end thereof to the outdoor rectifier 12.
  • the inrush current preventing resistance 10 is configured to restrain an inrush current to the capacitor 25.
  • the inrush current preventing relay 19 is provided in parallel with the outdoor relay 11.
  • the inrush current preventing relay 19 is connected at one end thereof to the terminal L of the outdoor terminal base 31 and at the other end thereof to the inrush current preventing resistance 10.
  • the inrush current preventing relay 19 opens the contact point (normally open) and, when the inrush current preventing relay coil 20 is energized, closes the contact point to make a short circuit between the inrush current preventing resistance 10 and the terminal L of the outdoor terminal base 31.
  • the inrush current preventing relay coil 20 closes the inrush current preventing relay 19 when the utility power 7 is supplied between the signal line 16 and the power signal common line 9.
  • the outdoor rectifier 12 is connected to the terminal L on the outdoor terminal base 31 via the outdoor relay 11 and the inrush current preventing resistance 10.
  • the outdoor rectifier 12 is also connected to the terminal N on the outdoor terminal base 31.
  • the outdoor rectifier 12 converts an AC voltage supplied from the utility power 7 to a given DC voltage, and supplies the same to the outdoor control unit 15 and the inverter circuit 23.
  • the capacitor 25 is provided between outputs of the outdoor rectifier 12 for smoothing an output from the outdoor rectifier 12 and supplying a DC voltage to the inverter circuit 23.
  • the inverter circuit 23 converts the input DC voltage to an AC voltage of a given frequency and a given voltage.
  • the inverter circuit 23 is provided with a motor or the like connected thereto, and drives a compressor or the like provided in the outdoor unit 3.
  • the outdoor control unit 15 operates the outdoor relay 11 and the power supply cutoff relay 21.
  • the outdoor control unit 15 also operates the outdoor communication circuit unit 14 to perform transmission and reception of a variety of operation signals with respect to the indoor unit 2.
  • the outdoor control unit 15 controls the inverter circuit 23.
  • the communication circuit power supply unit 13 is connected at one end thereof to a point between the outdoor relay 11 and the outdoor rectifier 12, thereby being connected to the terminal L on the outdoor terminal base 31 via the outdoor relay 11 and the inrush current preventing relay 19, and at the other end thereof to the terminal S2 on the outdoor terminal base 31.
  • the communication circuit power supply unit 13 converts an AC voltage supplied from the utility power 7 to a given DC voltage and supplies the same to the outdoor communication circuit unit 14.
  • the communication circuit power supply unit 13 is made up of, for example, a half-wave rectifier circuit.
  • the outdoor communication circuit unit 14 is connected at one end thereof to the terminal S3 on the outdoor terminal base 31 and at the other end thereof to the communication circuit power supply unit 13.
  • the outdoor communication circuit unit 14 carries out communications with the indoor communication circuit unit 6 of the indoor unit 2 via the signal line 16 and the power signal common line 9.
  • the inrush current preventing relay coil 20 is connected at one end thereof to the terminal S2 on the outdoor terminal base 31, and at the other end thereof to the terminal S3 on the outdoor terminal base 31 via the power supply cutoff relay 21.
  • the inrush current preventing relay coil 20 closes the contact point of the inrush current preventing relay when being energized.
  • the power supply cutoff relay 21 is connected at one end thereof to the inrush current preventing relay coil 20, and at the other end thereof to the terminal S3 on the outdoor terminal base 31. In the stationary state, the power supply cutoff relay 21 closes the contact point (normally close) and, when operated by the outdoor control unit 15, opens the contact point so that energization of the inrush current preventing relay coil 20 is cut off.
  • the outdoor unit 3 is provided with an outdoor heat exchange, an outdoor fan, a sensor, an electromagnetic expansion valve, a refrigerant switching valve, and a compressor as mechanical systems.
  • the power signal common line 9 corresponds to a "common line” in the invention.
  • the outdoor relay 11 and the inrush current preventing relay 19 each correspond to a "power supply relay” in the invention.
  • the inrush current preventing relay coil 20 corresponds to a "power supply relay coil” in the invention.
  • Fig. 2 is an electric component system block diagram of the air conditioner in the standby condition according to Embodiment 1.
  • the utility power 7 supplied to the terminals L and N of the outdoor terminal base 31 is supplied from the terminals S1 and S2 on the outdoor terminal base 31 to the terminals S1 and S2 on the indoor terminal base 30 of the indoor unit 2 via the power line 8 and the power signal common line 9.
  • the indoor rectifier 4 receives the utility power 7 supplied to the terminals S1 and S2 of the indoor terminal base 30 of the indoor unit 2.
  • the indoor rectifier 4 converts the input AC voltage to a given DC voltage.
  • the indoor rectifier 4 supplies the converted DC voltage to respective components of the indoor control unit 5 and the indoor unit 2.
  • the indoor control unit 5 determines whether the air conditioner 1 employs the indoor power receiving system or the outdoor power receiving system on the basis of data stored in the power receiving system data unit 26 and, when it is determined to be the outdoor power receiving system, enables the control of the outdoor activation relay 22.
  • the indoor control unit 5 determines whether or not the outdoor unit 3 connected to the indoor unit 2 is of the type which allows reduction of power consumption in the standby condition on the basis of the standby condition power consumption reduction capability information stored in the power receiving system data unit 26.
  • Embodiment 1 a case where the outdoor unit 3 is of the type which allows reduction of the power consumption in the standby condition will be described. An operation when the outdoor unit 3 is not of the type which allows reduction of the power consumption in the standby condition will be described in conjunction with Embodiment 2.
  • the outdoor activation relay 22 connects the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6 in the stationary state. Accordingly, the indoor communication circuit unit 6 is connected to the outdoor unit 3 via the signal line 16, and is brought into a state of being capable of establishing communications with the outdoor unit 3. At the same time, the indoor control unit 5 is brought into a state of waiting for the reception of an operation start request signal transmitted from the remote controller 17 and received via the receiving unit 18.
  • the contact points of the outdoor relay 11 and the inrush current preventing relay 19 of the outdoor unit 3 are opened in the stationary state.
  • the outdoor activation relay 22 of the indoor unit 2 opens the connection between the terminal S3 on the indoor terminal base 30 and the outdoor power supply line 24. Therefore, no utility power 7 is supplied between the terminals S2 and S3 on the outdoor terminal base 31, so that the inrush current preventing relay coil 20 is in a non-energized state. Therefore, even when the utility power 7 is supplied to the terminals L and N on the outdoor terminal base 31 of the outdoor unit 3, the inrush current preventing relay 19 and the outdoor relay 11 are each brought into an opened state. Therefore, in the standby condition, a power source supply to the respective components connected to downstream of the inrush current preventing relay 19 and the outdoor relay 11 is cut off, so that reduction of the power consumption of the outdoor unit 3 in the standby condition is achieved.
  • Fig. 3 is an electric component system block diagram of the air conditioner according to Embodiment 1, showing a state where the outdoor unit of the air conditioner is activated.
  • Fig. 4 is an electric component system block diagram of the air conditioner according to Embodiment 1 during operation.
  • Fig. 5 is a flowchart showing an operation of the indoor unit according to Embodiment 1.
  • Fig. 6 is a flowchart showing an operation of the outdoor unit according to Embodiment 1.
  • the indoor control unit 5 receives an operation start request from the remote controller 17 via the receiving unit 18.
  • the indoor control unit 5 makes a reference to the information in the power receiving system data unit 26 and, when data from the power receiving system data unit 26 indicates the outdoor power receiving system, operates the indoor communication circuit unit 6 to start communications with the outdoor unit 3.
  • the indoor control unit 5 determines whether or not communications between the indoor communication circuit unit 6 and the outdoor communication circuit unit 14 of the outdoor unit 3 are established.
  • the indoor control unit 5 operates (turns ON) the outdoor activation relay 22 to open the connection between the terminal S3 of the indoor terminal base 30 and the indoor communication circuit unit 6, and connects the terminal S3 of the indoor terminal base 30 with the outdoor power supply line 24. Accordingly, the utility power 7 is supplied between the signal line 16 and the power signal common line 9.
  • the indoor control unit 5 operates the outdoor activation relay 22 for a predetermined time.
  • the predetermined time may be set to a time (n seconds) required for charging the capacitor 25 of the outdoor unit 3.
  • the predetermined time is not limited thereto.
  • the indoor control unit 5 operates the outdoor activation relay 22 for the predetermined time, then stops (turns OFF) the operation thereof, connects the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6, and opens the connection between the terminal S3 on the indoor terminal base 30 and the outdoor power supply line 24 (see Fig. 3 ).
  • the indoor control unit 5 operates the indoor communication circuit unit 6 to start the communications with the outdoor unit 3.
  • the indoor control unit 5 determines whether or not the communications between the indoor communication circuit unit 6 and the outdoor communication circuit unit 14 of the outdoor unit 3 are established again.
  • the indoor communication circuit unit 6 starts communications with the outdoor communication circuit unit 14 of the outdoor unit 3.
  • the indoor control unit 5 carries out communications with the outdoor unit 3 via the indoor communication circuit unit 6, and causes the air conditioner 1 to perform a cooling operation or a heating operation.
  • the indoor control unit 5 operates the indoor communication circuit unit 6 again to start communications with the outdoor unit 3. Then, the indoor control unit 5 determines whether or not the communications between the indoor communication circuit unit 6 and the outdoor unit 3 are established within the predetermined time (n seconds) .
  • the indoor control unit 5 determines that the communications are abnormal.
  • the inrush current preventing relay coil 20 When the electric power from the utility power 7 is supplied between the terminals S2 and S3 of the outdoor terminal base 31, the inrush current preventing relay coil 20 is energized via the power supply cutoff relay 21, and makes the inrush current preventing relay 19 short-circuited (see Fig. 3 ). When the inrush current preventing relay 19 is made short-circuited, the utility power 7 supplied to the terminals L and N of the outdoor terminal base 31 is supplied to the outdoor rectifier 12 and the communication circuit power supply unit 13 via the inrush current preventing resistor 10.
  • the outdoor rectifier 12 converts an AC voltage, supplied from the utility power 7 to a given DC voltage, and supplies the same to the outdoor control unit 15, the capacitor 25, and the inverter circuit 23.
  • the communication circuit power supply unit 13 converts an AC voltage supplied from the utility power 7 to a given DC voltage and supplies the same to the outdoor communication circuit unit 14.
  • the outdoor control unit 15 makes the outdoor relay 11 short-circuited.
  • the outdoor control unit 15 operates the power supply cutoff relay 21 to open the contact point.
  • the inrush current preventing relay coil 20 is brought into a non-energized state, and the inrush current preventing relay 19 is opened (see Fig. 4 ). Accordingly, a short circuit between the terminals S2 and S3 on the outdoor terminal base 31 is prevented during operation of the outdoor unit 3, so that communications between the indoor communication circuit unit 6 and the outdoor communication circuit unit 14 are enabled.
  • the outdoor control unit 15 operates the outdoor communication circuit unit 14 to start communications with the indoor unit 2.
  • the outdoor communication circuit unit 14 starts communications with the indoor communication circuit unit 6 via the power signal common line 9 and the signal line 16.
  • the outdoor control unit 15 determines whether or not communications between the outdoor communication, circuit unit 14 and the indoor communication circuit unit 6 of the indoor unit 2 are established.
  • the outdoor control unit 15 carries out communications with the indoor unit 2 via the outdoor communication circuit unit 14, and causes the air conditioner 1 to perform the cooling operation or the heating operation.
  • the outdoor control unit 15 operates the outdoor communication circuit unit 14 again to start communications with the indoor unit 2. Then, the outdoor control unit 15 determines whether or not the communications between the outdoor communication circuit unit 14 and the indoor unit 2 are established within the predetermined time (n seconds).
  • the outdoor control unit 15 determines that the communications are abnormal.
  • the indoor control unit 5 receives an operation standby signal from the remote controller 17 via the receiving unit 18.
  • the indoor control unit 5 transmits the operation standby signal to the outdoor unit 3 via the indoor communication circuit unit 6.
  • the indoor communication circuit unit 6 transmits the operation standby signal to the outdoor communication circuit unit 14 via the signal line 16 and the power signal common line 9.
  • the outdoor control unit 15 receives the operation standby signal via the outdoor communication circuit unit 14.
  • the outdoor control unit 15 operates the outdoor relay 11 to open the contact point upon receipt of the operation standby signal.
  • the inrush current preventing relay 19 and the outdoor relay 11 are brought into an opened state to cut off the power supply from the utility power 7 to the outdoor unit 3 in the standby condition. Therefore, the standby condition power consumption consumed by the outdoor unit 3 in the standby condition is reduced.
  • the utility power 7 is supplied between the signal line 16 and the power signal common line 9, and the operation of the inrush current preventing relay 19 is effected thereby, so that the power supply to the outdoor unit 3 is achieved. Therefore, the control is achieved as-is without increasing the number of cores of the connecting cable between the indoor unit 2 and the outdoor unit 3 from three.
  • the utility power 7 supplied between the signal line 16 and the power signal common line 9 is stopped.
  • the power supply cutoff relay 21 is provided in the outdoor unit 3 to prevent a short circuit between the terminals S2 and S3 on the outdoor terminal base 31. Therefore, during operation of the air conditioner 1, communications via the signal line 16 are enabled between the indoor unit 2 and the outdoor unit 3.
  • the utility power 7 is connected to the outdoor terminal base 31 of the outdoor unit 3
  • the invention is not limited thereto, and the utility power 7 may be connected to the indoor terminal base 30 of the indoor unit 2.
  • the terminals L and N are provided on the indoor terminal base 30 of the indoor unit 2, and the utility power 7 is connected thereto.
  • the terminal L on the indoor terminal base 30 is connected to the terminal S1 on the indoor terminal base 30.
  • the terminal N on the indoor terminal base 30 is connected to the terminal S2 on the indoor terminal base 30.
  • the utility power 7 supplied to the terminals L and N on the indoor terminal base 30 is supplied from the terminals S1 and S2 on the indoor terminal base 30 to the terminals S1 and S2 on the outdoor terminal base 31 of the outdoor unit 3 via the power line 8 and the power signal common line 9.
  • the same advantages are achieved with the same operation.
  • Embodiment 2 a pattern in which the outdoor unit 3 is not of the type which allows reduction of the power consumption in the standby condition will be described.
  • Fig. 7 is an electric component system block diagram of an air conditioner according to Embodiment 2. Subsequently, a configuration of the outdoor unit 3 in Embodiment 2 will be described with a particular emphasis on different points from Embodiment 1.
  • the indoor unit 2 in Embodiment 2 has the similar configuration as Embodiment 1, and the same numbers reference the same parts.
  • the outdoor unit 3 in Embodiment 2 does not include the inrush current preventing relay 19, the inrush current preventing relay coil 20, and the power supply cutoff relay 21 which have been described in conjunction with Embodiment 1 ( Fig. 1 ).
  • Other parts of the configuration are the same as those in Embodiment1, and the same numbers reference the same parts.
  • the outdoor unit 3 in Embodiment 2 is not of the type which allows reduction of the power consumption in the standby condition.
  • it is the outdoor unit 3 having an electric component system in the related art.
  • the configuration of the outdoor unit 3 is not limited thereto, and may be varied as long as it is connected to the indoor unit 2 by the three core cable including the power line 8, the power signal common line 9, and the signal line 16.
  • the outdoor relay 11 is connected at one end thereof to the terminal L on the outdoor terminal base 31 and at the other end thereof to the outdoor rectifier 12 in the same manner as Embodiment 1.
  • the inrush current preventing resistance 10 is provided in parallel with the outdoor relay 11.
  • the inrush current preventing resistance 10 is connected at one end thereof to the terminal L on the outdoor terminal base 31 and at the other end thereof to the outdoor rectifier 12.
  • the power receiving system data unit 26 in Embodiment 2 stores information indicating that the outdoor unit 3 connected to the indoor unit 2 is not of the type which allows reduction of the power consumption in the standby condition as standby condition power consumption reduction capability information.
  • the utility power 7 supplied to the terminals L and N on the outdoor terminal base 31 is supplied to the outdoor rectifier 12 and the communication circuit power supply unit 13 via the inrush current preventing resistance 10 in the standby condition of the air conditioner 1.
  • the electric power from the utility power 7 supplied to the terminals L and N of the outdoor terminal base 31 is supplied from the terminals S1 and S2 of the outdoor terminal base 31 to the terminals S1 and S2 of the indoor terminal base 30 of the indoor unit 2 via the power line 8 and the power signal common line 9. Then, to the indoor rectifier 4 the electric power of the utility power 7 supplied to the terminals S1 and S2 of the indoor terminal base 30 of the indoor unit 2 is input.
  • the indoor rectifier 4 converts the input AC voltage to a given DC voltage.
  • the indoor rectifier 4 supplies the converted DC voltage to respective components of the indoor control unit 5 and the indoor unit 2.
  • the indoor control unit 5 determines whether or not the outdoor unit 3 connected to the indoor unit 2 is of the type which, allows reduction of the power consumption in the standby condition on the basis of the standby condition power consumption capability information stored in the power receiving system data unit 26. In Embodiment 2, since the outdoor unit 3 is not of the type which allows reduction of the power consumption in the standby condition, the indoor control unit 5 does not effect the operation of the outdoor activation relay 22.
  • the indoor control unit 5 Upon receipt of the operation start request or the operation standby signal from the remote controller 17 via the receiving unit 18, the indoor control unit 5 effects the operation of the indoor communication circuit unit 6 to start communications with the outdoor unit 3, and transmits the signal to the outdoor unit 3.
  • Fig. 8 is a flowchart showing an operation of the outdoor unit according to Embodiment 2. Subsequently, respective steps shown in Fig. 8 will be described.
  • the utility power 7 being supplied to the terminals L and N on the outdoor terminal base 31 is supplied to the outdoor rectifier 12 via the communication circuit power supply unit 13 and the inrush current preventing resistance 10. Then, the outdoor rectifier 12 converts an AC voltage supplied from the utility power 7 to a given DC voltage, and supplies the same to the outdoor control unit 15, the capacitor 25, and the inverter circuit, 23.
  • the communication circuit power supply unit 13 converts an AC voltage supplied from the utility power 7 to a given DC voltage and supplies the same to the outdoor communication circuit unit 14.
  • the outdoor control unit 15 effects the operation of the outdoor communication circuit unit 14 to start communications with the indoor unit 2.
  • the outdoor communication circuit unit 14 starts communications with the indoor communication circuit unit 6 via the power signal common line 9 and the signal line 16.
  • the outdoor control unit 15 determines whether or not communications between the outdoor communication circuit unit 14 and the indoor communication circuit unit 6 of the indoor unit 2 are established.
  • the outdoor control unit 15 determines a request signal from the indoor unit 2.
  • the request signal from the indoor unit 2 is an operation standby signal
  • the outdoor control unit 15 is brought into a state of waiting an operation start request signal.
  • the outdoor control unit 15 turns the outdoor relay ON (short circuit).
  • the outdoor control unit 15 carries out communications with the indoor unit 2 via the outdoor communication circuit unit 14, and causes the air conditioner 1 to perform the cooling operation or the heating operation.
  • the outdoor control unit 15 effects the operation of the outdoor communication circuit unit 14 again to start communications with the indoor unit 2. Then, the outdoor control unit 15 determines whether or not the communications between the outdoor communication circuit unit 14 and the indoor unit 2 are established within the predetermined time (n seconds).
  • the outdoor control unit 15 determines that the communications are abnormal.
  • the indoor unit 2 and the outdoor unit 3 are connected by the three core cable including the power line 8, the power signal common line 9, and the signal line 16. Therefore, the control is achieved without increasing the number of the connecting cable between the indoor unit 2 and the outdoor unit 3 from three cores.
  • the indoor unit 2 which allows the reduction of the standby condition power consumption can be connected thereto.
  • the outdoor unit 3 of the model in the related art can be connected to the indoor unit 2 without developing the substrate and software.
  • connection of the indoor unit 2 and the outdoor unit 3 is also possible even when the levels of development of the standby condition power consumption reduction capability thereof are different.
  • Embodiment 3 a pattern in which the utility power 7 is connected to the indoor unit 2 will be described.
  • Fig. 9 is an electric component system block diagram of an air conditioner according to Embodiment 3. Subsequently, a configuration of the air conditioner 1 in Embodiment 3 will be described with a particular emphasis on different points from Embodiments 1 and 2.
  • the indoor unit 2 according to Embodiment 3 includes a 52C relay 27 in addition to the configuration in Embodiment 1. ( Fig. 1 ) .
  • the indoor terminal base 30 in Embodiment 3 includes terminals N, L in addition to the configuration in Embodiment 1 ( Fig. 1 ).
  • the 52C relay 27 is connected at one end thereof to the terminal S1 on the indoor terminal base 30 and at the other end to the indoor rectifier 4.
  • the 52C relay 27 opens a contact point in the stationary state (normally open), and closes the contact point when the operation is effected by the indoor control unit 5.
  • the utility power 7 is connected to the terminals L and N on the indoor terminal base 30 of the indoor unit 2.
  • the terminal L on the indoor terminal base 30 is connected to a point between the 52C relay 27 and the indoor rectifier 4.
  • the terminal N on the indoor terminal base 30 is connected to a point between the terminal S2 on the indoor terminal base 30 and the indoor rectifier 4. Accordingly, the utility power 7 supplied to the terminals L and N on the indoor terminal base 30 is input to the indoor rectifier 4.
  • the indoor rectifier 4 converts the input AC voltage to a given DC voltage.
  • the indoor rectifier 4 supplies the converted DC voltage to respective components of the indoor control unit 5 and the indoor unit 2.
  • the power receiving system data unit 26 in Embodiment 3 stores information indicating that the outdoor unit 3 connected to the indoor unit 2 is not of the type which allows reduction of the power consumption in the standby condition as the standby condition power consumption reduction capability information.
  • the power receiving system data unit 26 also stores information indicating that the indoor unit 2 employs the indoor power receiving system.
  • the 52C relay 27 corresponds to an "indoor power distribution relay" in the invention.
  • the outdoor unit 3 in Embodiment 3 has a configuration in which the terminals L and N on the outdoor terminal base 31 are not provided and the utility power 7 is not connected thereto in contrast to the configuration of Embodiment 2 ( Fig. 7 ).
  • the terminal S1 on the outdoor terminal base 31 and the outdoor relay 11 are connected directly without the intermediary of the terminal L.
  • the terminal S2 on the outdoor terminal base 31 and the outdoor rectifier 12 are connected directly without the intermediary of the terminal N.
  • the invention is not limited thereto, and a configuration similar to the outdoor unit 3 in Embodiment 2 ( Fig. 7 ) in which the utility power 7 is not connected to the outdoor unit 3 is also applicable.
  • the configuration of the outdoor unit 3 is not limited thereto, and may be varied as long as it is connected to the indoor unit 2 by the three core cable including the power line 8, the power signal common line 9, and the signal line 16, and the utility power 7 is not connected thereto.
  • the utility power 7 is supplied to the terminals L and N on the indoor terminal base 30 of the indoor unit 2. Then, the utility power 7 is input to the indoor rectifier 4.
  • the indoor rectifier 4 converts the input AC voltage to a given DC voltage.
  • the indoor rectifier 4 supplies the converted DC voltage to respective components of the indoor control unit 5 and the indoor unit 2.
  • the indoor control unit 5 determines whether the air conditioner 1 employs the indoor power receiving system or the outdoor power receiving system on the basis of data stored in the power receiving system data unit 26 and, when it is determined to be the indoor power receiving system, enables the control of the 52C relay 27.
  • the indoor control unit 5 determines whether or not the outdoor unit 3 connected to the indoor unit 2 is of the type which allows reduction of the power consumption in the standby condition on the basis of the standby condition power consumption reduction capability information stored in the power receiving system data unit 26. In Embodiment 3, since the outdoor unit 3 is not of the type which allows reduction of the power consumption in the standby condition, the indoor control unit 5 does not operate the outdoor activation relay 22.
  • the outdoor activation relay 22 connects the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6 in the stationary state. Accordingly, the indoor communication circuit unit 6 is connected to the outdoor unit 3 via the signal line 16, and is brought into a state of being capable of establishing communications with the outdoor unit 3. At the same time, the indoor control unit 5 is brought into a state of waiting for the reception of an operation start request signal transmitted from the remote controller 17 and received via the receiving unit 18.
  • the 52C relay 27 opens the contact point in the stationary state. Therefore, no utility power 7 is supplied between the terminals S1 and S2 on the indoor terminal base 30, so that the utility power 7 is not supplied to the outdoor unit 3. Therefore, in the standby condition, the power source supply to the respective components of the outdoor unit 3 is cut off, so that reduction of the power consumption of the outdoor unit 3 in the standby condition is achieved.
  • Fig. 10 is a flowchart showing an operation of the indoor unit according to Embodiment 3. Subsequently, respective steps shown in Fig. 10 will be described.
  • the indoor control unit 5 receives an operation start request from the remote controller 17 via the receiving unit 18.
  • the indoor control unit 5 effects the operation (ON) of the 52C relay 27, and connects the terminal L on the indoor terminal base 30 and the terminal S1 on the indoor terminal base 30. Accordingly, the utility power 7 is supplied between the power line 8 and the power signal common line 9.
  • the indoor control unit 5 effects the operation of the indoor communication circuit unit 6 to start the communications with the outdoor unit 3.
  • the indoor control unit 5 determines whether or not the communication between the indoor communication circuit unit 6 and the outdoor communication circuit unit 14 of the outdoor unit 3 is established.
  • the indoor communication circuit unit 6 starts communications with the outdoor communication circuit unit 14 of the outdoor unit 3.
  • the indoor control unit 5 carries out communications with the outdoor unit 3 via the indoor communication circuit unit 6, and causes the air conditioner 1 to perform the cooling operation or the heating operation.
  • the indoor control unit 5 effects the operation of the indoor communication circuit unit 6 again to start communications with the outdoor unit 3. Then, the indoor control unit 5 determines whether or not the communications between the indoor communication circuit unit 6 and the outdoor unit 3 are established within the predetermined time (n seconds).
  • the indoor control unit 5 determines that the communication is abnormal.
  • the electric power from the utility power 7 is supplied between the power line 8 and the power signal common line 9 in Step 34 described above, the electric power from the utility power 7 is supplied to the terminals S1 and S2 on the outdoor terminal base 31 of the outdoor unit 3.
  • the power is supplied to the outdoor rectifier 12 and the communication circuit power supply unit 13 via the inrush current preventing resistor 10.
  • the outdoor rectifier 12 converts an AC voltage supplied from the utility power 7 to a given DC voltage, and supplies the same to the outdoor control unit 15, the capacitor 25, and the inverter circuit 23.
  • the communication circuit power supply unit 13 converts an AC voltage supplied from the utility power 7 to a given DC voltage and supplies the same to the outdoor communication circuit unit 14.
  • Embodiment 3 even when the outdoor unit 3 is not of the type which allows reduction of the power consumption in the standby condition, the 52C relay is brought into an opened state to cut off the power supply from the utility power 7 to the outdoor unit 3 in the standby condition. Therefore, the standby condition power consumption consumed by the outdoor unit 3 in the standby condition is reduced. Even in the indoor power receiving system in which the utility power 7 is connected to the indoor unit 2, the indoor unit 2 and the outdoor unit 3 are connected by the three core cable including the power line 8, the power signal common line 9, and the signal line 16. Therefore, the control is achieved as-is without increasing the number of cores of the connecting cable between the indoor unit 2 and the outdoor unit 3 from three.
  • the outdoor unit 3 of the model in the related art can be connected to the indoor unlit 2 without developing the substrate and the software.
  • the connection of the indoor unit 2 and the outdoor unit 3 is also possible even when the levels of development of the standby condition power consumption reduction capability thereof are different.
  • the indoor control substrate and the control may be commonly used irrespective of the power receiving mode of the utility power 7 and the connection to the outdoor unit of the prior year model.
  • Embodiment 3 the case of the outdoor unit 3 having no inrush current preventing relay 19 provided therein and not allowing the reduction of the power consumption in the standby condition has been described.
  • the invention is not limited thereto, and the outdoor unit 3 which allows the reduction of the power consumption in the standby condition described in Embodiment 1 may be connected as the outdoor unit 3.
  • the indoor control unit 5 makes a reference to data in the power receiving system data unit 26, and effects the operation of the outdoor activation relay 22 when the outdoor unit 3 is of the type which allows the reduction of the power consumption in the standby condition and the utility power 7 is supplied to the indoor unit 2. With such the configuration and the operation, the same advantages are achieved.
  • Embodiment 4 the mode of the air conditioner 1 in a multiple connection having a plurality of the indoor units will be described.
  • Fig. 11 is an electric component system block diagram of an air conditioner in the standby condition according to Embodiment 4.
  • Embodiment 4 a plurality of the indoor units are provided.
  • Embodiment 4 a case where two indoor units, that is, an indoor unit A 28 and an indoor unit B 29 are provided will be described.
  • the configurations of the indoor unit A 28 and the indoor unit B 29 are the same as the indoor unit 2 in Embodiment 1 ( Fig. 1 ), and the same numbers reference the same parts.
  • the number of the indoor units is not limited thereto, and three or more of those may be provided.
  • the indoor unit A 28 and the indoor unit B 29 each are connected to the outdoor unit 3 respectively by the three core cable including the power line 8, the power signal common line 9, and the signal line 16.
  • the outdoor terminal base 31 of the outdoor unit 3 is provided with two sets of the terminals S1, S2 and S3 corresponding to the indoor unit A 28 and the indoor unit B 29.
  • the terminal S1 on the outdoor terminal base 31 is connected to the respective terminals S1 on the outdoor terminal base 31.
  • the terminal S2 on the outdoor terminal base 31 is connected to the respective terminals S2 on the outdoor terminal base 31.
  • the terminal S3 on the outdoor terminal base 31 is connected to the respective terminals S3 on the outdoor terminal base 31.
  • the outdoor unit 3 in Embodiment 4 includes the outdoor communication circuit units 14 according to the number of the indoor units to be connected in addition to the configuration in Embodiment 1 ( Fig. 1 ).
  • the outdoor communication circuit units 14 each are connected at one end thereof to the communication circuit power supply unit 13, and at the other end thereof to the terminal S3 to which the signal line 16 of the indoor unit corresponding thereto is connected.
  • the outdoor unit 3 is provided with the power supply cutoff relays 21 according to the number of the indoor units to be connected.
  • the power supply cutoff relays 21 each are connected at one end to the inrush current preventing relay coil 20 and at the other end to the terminal S3 to which the signal line 16 of the indoor unit corresponding to the outdoor communication circuit unit 14 is connected.
  • the utility power 7 supplied to the terminals L and N on the outdoor terminal base 31 is supplied from the terminals S1 and S2 on the outdoor terminal base 31 to the terminals S1 and S2 on the indoor terminal bases 30 of the indoor unit A 28 and the indoor unit B 29 via the power line 8 and the power signal common line 9.
  • the indoor rectifiers 4 each receive an input of the power of the utility power 7 supplied to the terminals S1 and S2 on the indoor terminal bases 30.
  • the indoor rectifier 4 converts the input AC voltage to a given DC voltage.
  • the indoor rectifier 4 supplies the converted DC voltage to respective components of the indoor control unit 5 and the indoor unit 2.
  • the indoor control unit 5 determines whether the air conditioner 1 employs the indoor power receiving system or the outdoor power receiving system on the basis of data stored in the power receiving system data unit 26 and, when it is determined to be the outdoor power receiving system, enables the control of the outdoor activation relay 22.
  • the indoor control unit 5 determines whether or not the outdoor unit 3 connected to the indoor unit 2 is of the type which allows reduction of the power consumption in the standby condition on the basis of the standby condition power consumption reduction capability information stored in the power receiving system data unit 26.
  • the outdoor activation relay 22 connects the terminal S3 on the indoor terminal base 30 and the indoor communication circuit unit 6 in the stationary state. Accordingly, the each indoor communication circuit unit 6 is connected to the outdoor unit 3 via the signal line 16, and is brought into a state of being capable of establishing communications with the outdoor unit 3. At the same time, the indoor control unit 5 is brought into a state of waiting for the reception of an operation start request signal transmitted from the remote controller 17 and received via the receiving unit 18.
  • the contact points of the outdoor relay 11 and the inrush current preventing relay 19 of the outdoor unit 3 are opened in the stationary state.
  • each of the respective outdoor activation relays 22 of the indoor unit A 28 and the indoor unit B 29 opens the connection between the terminal S3 on the indoor terminal base 30 and the outdoor power supply line 24. Therefore, no utility power 7 is supplied between the terminals S2 and S3 on the outdoor terminal base 31, so that the inrush current preventing relay coil 20 is in the non-energized state. Therefore, even when the utility power 7 is supplied to the terminals L and N on the outdoor terminal base 31 of the outdoor unit 3, the inrush current preventing relay 19 and the outdoor relay 11 are each brought into an opened state. Therefore, in the standby condition, the power source supply to the respective components connected to downstream of the inrush current preventing relay 19 and the outdoor relay 11 is cut off, so that reduction of the standby condition power consumption of the outdoor unit 3 in the standby condition is achieved.
  • Fig. 12 is an electric component system block diagram of the air conditioner according to Embodiment 4 in which one of the indoor units is activated.
  • Fig. 13 is an electric component system block diagram of the air conditioner according to Embodiment 4 in which one of the indoor units is in operation. The operation to activate the outdoor unit 3 when an operation start request is transmitted from the remote controller 17 only to the indoor unit A 28 will be described.
  • the indoor control unit 5 of the indoor unit A 28 receives the operation start request via the receiving unit 18. Operations from then onward of the indoor unit A 28 are the same as those in Step 1 to Step 11 in Embodiment 1.
  • Fig. 14 is a flowchart showing an operation of the outdoor unit according to Embodiment 4. Referring now to Fig. 12 and Fig. 13 , description will be given on the basis of respective steps in Fig. 14 .
  • the inrush current preventing relay coil 20 When the utility power 7 is supplied between the terminals S2 and S3 on the outdoor terminal base 31, the inrush current preventing relay coil 20 is energized via the power supply cutoff relays 21, and makes the inrush current preventing relay 19 short-circuited (see Fig. 12 ).
  • the utility power 7 supplied to the terminals L and N on the outdoor terminal base 31 is supplied to the outdoor rectifier 12 and the communication circuit power supply unit 13 via the inrush current preventing resistance 10.
  • the outdoor rectifier 12 converts an AC voltage supplied from the utility power 7 to a given DC voltage, and supplies the same to the outdoor control unit 15, the capacitor 25, and the inverter circuit 23.
  • the communication circuit power supply unit 13 converts an AC voltage supplied from the utility power 7 to a given DC voltage and supplies the same to the outdoor communication circuit units 14.
  • the outdoor control unit 15 makes the outdoor relay 11 short-circuited.
  • the outdoor control unit 15 effects the operations of all the power supply cutoff relays 21 to open the contact points.
  • the inrush current preventing relay coil 20 is brought into a non-energized state, and the inrush current preventing relay 19 is opened (see Fig. 13 ). Accordingly, the short circuit between the terminals S2 and S3 on the outdoor terminal base 31 is prevented during operation of the outdoor unit 3, so that communications between the indoor communication circuit unit 6 and the outdoor communication circuit unit 14 are enabled.
  • the outdoor control unit 15 effects the operations of all the outdoor communication circuit units 14 to start communications with the indoor unit A 28 or the indoor unit B 29.
  • the outdoor communication circuit units 14 each start communications with the indoor communication circuit unit 6 of the corresponding indoor unit via the power signal common line 9 and the signal line 16.
  • the outdoor control unit 15 determines whether or not communications between the respective outdoor communication circuit units 14 and the indoor communication circuit unit 6 of the corresponding indoor unit are established.
  • the outdoor control unit 15 repeats Step 47 until the communications with the indoor communication circuit unit 6 of either one of the indoor unit A 28 or the indoor unit B 29 are established.
  • the indoor communication circuit unit 6 of the indoor unit A 28 Since the indoor communication circuit unit 6 of the indoor unit A 28 is in operation here, it is determined that communications between the outdoor communication circuit unit 14 and the indoor communication circuit unit 6 of the indoor unit A 28 are established. In this case, the outdoor unit 3 starts communication with the indoor unit A 28.
  • the outdoor control unit 15 carries out communications with the indoor unit A 28 via the outdoor communication circuit unit 14, and causes the air conditioner 1 to perform the cooling operation or the heating operation.
  • the indoor control unit 5 of the indoor unit B 29 receives the operation start request via the receiving unit 18. From then onward, establishment of the communications between the indoor communication circuit unit 6 of the indoor unit B 29 and the outdoor unit 3 with the same operations as in Step 1 to Step 3 in Embodiment 1 is achieved.
  • the outdoor control unit 15 of the indoor unit B 29 carries out the communications with the outdoor unit 3 via the indoor communication circuit unit 6 by the operations in Step 3 and Step 9 in Embodiment 1, and causes the air conditioner 1 to perform the cooling operation or the heating operation.
  • the indoor control units 5 each receive an operation standby signal from the remote controller 17 via the corresponding receiving unit 18.
  • the outdoor control unit 15 of the outdoor unit 3 receives the operation standby signal via the respective outdoor communication circuit units 14.
  • the outdoor control unit 15 effects the operation of the outdoor relay 11 to open the contact point upon receipt of the operation standby signal from all the indoor units.
  • connection between the respective indoor units and the outdoor unit 3 is achieved as-is without increasing the number of cores of the connecting cable between the respective indoor units and the outdoor unit 3 from three, and the reduction of the standby made power consumption in the standby condition is achieved.
EP10002461.1A 2009-04-06 2010-03-09 Klimaanlage mit reduziertem Standby Energieverbrauch der Ausseneinheit auf Basis einer dreiadrigen Kabelverbindung zwischen Innen- und Ausseneinheit Active EP2241831B1 (de)

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EP2455676A3 (de) * 2010-11-18 2017-09-06 Johnson Controls-Hitachi Air Conditioning Technology (Hong Kong) Limited Klimaanlage
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EP2746685A3 (de) * 2012-12-20 2017-12-27 Mitsubishi Electric Corporation Klimaanlage
CN105337598A (zh) * 2014-07-29 2016-02-17 青岛海尔空调器有限总公司 一种空调器及其低待机功耗电路和控制方法
CN104214901B (zh) * 2014-09-25 2017-01-11 中国扬子集团滁州扬子空调器有限公司 变频空调器的室内机失联控制方法
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JP2010243051A (ja) 2010-10-28
EP2241831A8 (de) 2011-02-09
EP2241831B1 (de) 2018-04-25
ES2670725T3 (es) 2018-05-31

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