EP2392869B1 - Air conditioner - Google Patents

Air conditioner Download PDF

Info

Publication number
EP2392869B1
EP2392869B1 EP11002689.5A EP11002689A EP2392869B1 EP 2392869 B1 EP2392869 B1 EP 2392869B1 EP 11002689 A EP11002689 A EP 11002689A EP 2392869 B1 EP2392869 B1 EP 2392869B1
Authority
EP
European Patent Office
Prior art keywords
line
power supply
contact
port
air conditioner
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11002689.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2392869A3 (en
EP2392869A2 (en
Inventor
Toshihide Minami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP2392869A2 publication Critical patent/EP2392869A2/en
Publication of EP2392869A3 publication Critical patent/EP2392869A3/en
Application granted granted Critical
Publication of EP2392869B1 publication Critical patent/EP2392869B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • F24F11/62—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
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump 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
    • F24F11/88—Electrical aspects, e.g. circuits

Definitions

  • the present invention relates to an air conditioner.
  • Air conditioners have an indoor unit and an outdoor unit. Various types of them having power supply lines that supply power to the indoor unit and the outdoor unit, and a transmission line used for communication between the indoor unit and the outdoor unit and used for power supply to the outdoor unit are proposed (see Patent Literature 1, for example). Such an air conditioner does not supply power to the outdoor unit in a standby state, and supplies power from the indoor unit to the outdoor unit in a state to start operation.
  • the indoor unit of this type of an air conditioner includes a normally-open single-pole relay.
  • the relay is controlled by a microcomputer so that the relay is open in the standby state. That is, in the standby state, the power supply lines and the transmission line are brought into non-conduction and thereby power is not supplied to the outdoor unit.
  • the relay In the operation state, the relay is closed by the microcomputer. That is, in the operation state, the power supply lines and transmission line are brought into conduction and thereby power is supplied to the outdoor unit and the outdoor unit is operated.
  • Patent Literature 1 Japanese Unexamined Patent Application Publication No. 2009-14225 (pages 5 and 6 and Fig. 1 ) An air conditioner according to the preamble of claim 1 is known from JP 2009 041857 A .
  • a conventional air conditioner as described in Patent Literature 1 has a normally-open single-pole relay in its control circuit. Accordingly, when the air conditioner shifts from the standby state to the operation state and the relay is closed, a power supply voltage is applied to a communication circuit, so the parts in the communication circuit need to have high dielectric strength or protective parts need to be mounted, increasing costs.
  • the present invention addresses the above problem with the object of providing an air conditioner that eliminates the need for expensive high dielectric strength parts or protective parts.
  • the air conditioner according to the present invention includes an indoor unit control board and an outdoor unit controller that controls a compressor.
  • the indoor unit control board has: a first power supply line and a second power supply line that supply AC power; a communication circuit; a single-pole double-throw relay that has a first contact connected to a communication line, a second contact connected to the communication circuit, a third contact connected to the first power supply line, and a coil for a switchover between a mutual connection of the first contact and the second contact and a mutual connection of the first contact and the third contact, the communication circuit communicating with the outdoor unit controller via the communication line and the second contact and the first contact of the single-pole double-throw relay; and a microcomputer that outputs communication information to the communication circuit and controls the coil.
  • the air conditioner according to the present invention uses the single-pole double-throw relay to protect the communication circuit from a power supply voltage and thereby eliminates the need for expensive high dielectric strength parts or protective parts, suppressing an increase in costs.
  • Fig. 1 shows an exemplary circuit configuration of an indoor unit control board 1 and an outdoor unit control board 2 mounted in an air conditioner 100 according to Embodiment 1 of the present invention.
  • the air conditioner 100 can function as a low standby power air conditioner.
  • relationships in size between components may differ from actual relationships.
  • a first line J1, a second line J2, a third line J3, a fourth line J4, a fifth line J5, a sixth line J6, and a seventh line J7 in Fig. 1 and subsequent drawings are indicated as solid lines when they are brought into conduction and as dotted lines when they are brought into non-conduction. These lines may be jumper lines, jumper resistors, or any other lines for which their conduction and non-conduction can be controlled.
  • Low standby power air conditioners will be briefly described below. They can control the drive frequency of a compressor (not shown) and supply power to the compressor only during an operation (in an operation state).
  • Low standby power air conditioners satisfy regulations in European countries and perform inverter control, which is widely demanded in Japan as well, to reduce power consumption during a standby operation (in a standby operation state).
  • the air conditioner 100 includes an indoor unit 100a, in which at least the indoor unit control board 1 is disposed, and an outdoor unit 100b, in which at least the outdoor unit control board 2 is disposed.
  • an indoor unit 100a in which at least the indoor unit control board 1 is disposed
  • an outdoor unit 100b in which at least the outdoor unit control board 2 is disposed.
  • the indoor unit control board 1 includes a terminal block 3, a diode bridge 4, a power supply circuit 5, an electrolytic capacitor 6, a single-pole double-throw relay 7, a communication circuit 8, and a microcomputer 9, which are electrically connected.
  • the terminal block 3 includes a first power supply terminal 3a, a second power supply terminal 3b, and a communication terminal 3c that respectively bring the first power supply line N1, the second power supply line N2, and the communication line COM to the indoor unit control board 1.
  • the terminal block 3 may be replaced with, for example, lines.
  • the diode bridge 4 is structured by connecting a first diode 4a, a second diode 4b, a third diode 4c, and a fourth diode 4d. Specifically, in the diode bridge 4, the anode of the first diode 4a is connected to the cathode of the second diode 4b in series, and the anode of the third diode 4c is connected to the cathode of the fourth diode 4d in series, and these two series connections are placed in parallel. The cathodes of the first diode 4a and third diode 4c are connected, and the anodes of the second diode 4b and fourth diode 4d are connected.
  • the anode of the first diode 4a and the cathode of the second diode 4b are connected to the first power supply terminal 3a of the terminal block 3 via the first power supply line N1.
  • the anode of the third diode 4c and the cathode of the fourth diode 4d are connected to the second power supply terminal 3b of the terminal block 3 via the second power supply line N2.
  • the function of the diode bridge 4 will be described later.
  • the power supply circuit 5 includes a first port PW1 and a second port PW2 that receive a DC voltage converted by the diode bridge 4 and electrolytic capacitor 6, and also includes a third port PW3, a fourth port PW4, and a fifth port PW5 that respectively supply an operation voltage to the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9.
  • the first port PW1 is connected to the cathode of the first diode 4a and the cathode of the third diode 4c through a first power supply circuit N3.
  • the second port PW2 is connected to the anode of the second diode 4b and the anode of the fourth diode 4d through a second power supply circuit N4. The function of the power supply circuit 5 will be described later.
  • One electrode of the electrolytic capacitor 6 is connected to the first power supply circuit line N3 and the other electrode is connected to the second power supply circuit line N4. The function of the electrolytic capacitor 6 will be described later.
  • the single-pole double-throw relay 7 which can switch two contacts while its coil is energized, includes a first contact 7a connected to the communication line COM, a second contact 7b connected to the communication circuit 8, a third contact 7c connected to the first power supply line N1, and a coil 7d.
  • the first line J1 is connected between the second contact 7b and the communication circuit 8.
  • the single-pole double-throw relay 7 can make a switchover to select conduction between the first contact 7a and the second contact 7b or conduction between the first contact 7a and the third contact 7c, in response to a control signal from the microcomputer.
  • the coil 7d is connected to the third port PW3 in the power supply circuit 5 through a line 13 to receive an operation voltage (operation current).
  • the coil 7d then functions as an electromagnet, enabling a metal connectable to the contacts to move.
  • the communication circuit 8 includes a second port SE2 communicating with the microcomputer 9, which will be described later, a first port SE1 communicating with an outdoor unit controller 10, and a third port SE3 receiving an operation voltage.
  • the second port SE2 is connected to the microcomputer 9 through a line 12.
  • the first port SE1 is connected to the communication line COM.
  • the third port SE3 in the communication circuit 8 is connected to the fifth port PW5 in the power supply circuit 5 through a line 15 to receive an operation voltage.
  • the function of the communication circuit 8 will be described later.
  • the microcomputer 9 includes a first port P1 for communicating with the communication circuit 8, a second port P2 and a third port P3 for sending control signals to the single-pole double-throw relay 7, and a fourth port P4 for receiving an operation voltage.
  • the first port P1 is connected the second port SE2 in the communication circuit 8 through the line 12.
  • the second port P2 and third port P3 are connected to the single-pole double-throw relay 7 through the second line J2 and third line J3, which will be described later, respectively.
  • the fourth port P4 in the microcomputer 9 is connected to the fourth port PW4 in the power supply circuit 5 through a line 14, which will be described later, to receive an operation voltage. The function of the microcomputer 9 will be described later.
  • the outdoor unit control board 2 includes at least the outdoor unit controller 10.
  • the outdoor unit controller 10 is connected to the communication circuit 8 on the indoor unit control board 1 through the communication line COM.
  • the diode bridge 4 converts supplied AC voltages to DC voltages, and supplies the DC voltages to the power supply circuit 5 behind the diode bridge 4.
  • the electrolytic capacitor 6 is charged by receiving the DC voltages converted from the AC voltages by the diode bridge 4, and supplies stable DC voltages to the power supply circuit 5.
  • the power supply circuit 5 receives the DC voltages from the diode bridge 4 and supplies operation voltages to at least the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9.
  • the communication circuit 8 communicates with the outdoor unit controller 10.
  • the microcomputer 9 sends a control signal to the single-pole double-throw relay 7 to switch the conduction state of the single-pole double-throw relay 7, and controls the communication circuit 8 through communication with it.
  • the communication circuit 8 is controlled in response to a control signal from the microcomputer 9.
  • FIG. 1 Operation of the indoor unit control board 1 will be described with reference to Fig. 1 .
  • AC voltages supplied from the first power supply line N1 and second power supply line N2 are transferred to the indoor unit control board 1 through the first power supply terminal 3a and second power supply terminal 3b disposed on the terminal block 3, respectively.
  • the voltage is transferred from the second power supply line N2 to the first power supply line N1 through the third diode 4c, the first port PW1, the second port PW2, and the second diode 4b in that order.
  • the voltage is also supplied to the electrolytic capacitor 6, so that the electrolytic capacitor 6 is charged and thereby can supply a stable DC voltage to the power supply circuit 5 (the voltage is rectified by the diode bridge 4 and the electrolytic capacitor 6).
  • the power supply circuit 5 Upon receipt of the DC voltages, the power supply circuit 5 can supply drive voltages to the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9. In addition, the power supply circuit 5 can supply predetermined operation voltages to circuits (not shown in Fig. 1 ) that are mounted on the indoor unit control board 1 and need these voltages.
  • the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9 can operate as described below.
  • the coil 7d conducts the first contact 7a and the second contact 7b of the single-pole double-throw relay 7 by a current (voltage) supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the second port P2 of the microcomputer 9.
  • the communication circuit 8 is connected to the outdoor unit controller 10 through the communication line COM, the second contact 7b, and the first contact 7a.
  • the coil 7d conducts the first contact 7a and the third contact 7c of the single-pole double-throw relay 7 by a current (voltage) supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the second port P2 of the microcomputer 9. Then, the first power supply line N1 is connected to the outdoor unit controller 10 through the third contact 7c and the first contact 7a.
  • the outdoor unit controller 10 shifts from the standby state to the operation state (or from the operation state to the standby state) and while it is placed in the operation state (or in the standby state) as described above, the communication circuit 8 is left disconnected from the first power supply line N1, so a high voltage is not applied to the communication circuit 8.
  • Fig. 2 shows another exemplary circuit configuration of the indoor unit control board 1 and outdoor unit control board 2 mounted in the air conditioner 100 according to Embodiment 1 of the present invention.
  • the indoor unit control board 1 in the air conditioner 100 is differently connected so that the air conditioner 100 functions as a constant-speed air conditioner. That is, when the connection of the indoor unit control board 1 in the air conditioner 100 is changed, the air conditioner 100 can also function as a constant-speed air conditioner.
  • the first line J1 and the second line J2 are brought into non-conduction, and the third port P3 of the microcomputer 9 and the single-pole double-throw relay 7 are conducted by the third line J3.
  • constant-speed air conditioners will be briefly described. They do not control the drive frequency of the compressor. That is, they operate the compressor with a constant drive frequency in the operation state, and stop the compressor in the standby state.
  • the communication line COM is connected to the outdoor unit controller 10.
  • the communication line COM is connected to a large relay 16 as shown in Fig. 2 .
  • the large relay 16 is disposed in the outdoor unit 100b, instead of the outdoor unit controller 10.
  • the outdoor unit controller 10 may perform control the start and stop operation.
  • the communication line COM is connected to the large relay 16 so that power is supplied to the large relay 16 through the communication line COM.
  • the compressor When power is supplied to the large relay 16, the compressor operates. While power is not supplied to the large relay 16, the compressor is left stopping.
  • the coil 7d conducts the first contact 7a and the second contact 7b of the single-pole double-throw relay 7 by a current (voltage) supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the third port P3 of the microcomputer 9. Then, the first power supply line N1 and the communication line COM are brought into non-conduction. Accordingly, power is not supplied to the large relay 16, so the compressor is left stopping.
  • the coil 7d conducts the first contact 7a and third contact 7c of the single-pole double-throw relay 7 by a current (voltage) supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the third port P3 of the microcomputer 9. Then, the first power supply line N1 is connected to the large relay 16 through the third contact 7c and the first contact 7a. Since power is supplied to the large relay 16, therefore, the compressor operates.
  • the air conditioner 100 can also function as a constant-speed air conditioner.
  • the indoor unit control board 1 uses a single-pole double-throw relay to prevent a power supply voltage from being applied to the communication circuit 8. Therefore, the air conditioner 100 according to Embodiment 1 eliminates the need for expensive high dielectric strength parts or protective parts that protect the communication circuit 8 from a power supply voltage, which suppresses an increase in costs. Furthermore, the air conditioner 100 can selectively function as a low standby power air conditioner or constant-speed air conditioner by switching the first line J1, second line J2, and third line J3 between the conductive state and non-conductive state.
  • Fig. 3 shows an exemplary circuit configuration of an indoor unit control board 20 and an outdoor unit control board 21 mounted in an air conditioner 101, which includes at least an indoor unit 101a and an outdoor unit 101b, according to Embodiment 2 of the present invention.
  • the air conditioner 101 can function as a low standby power air conditioner.
  • Fig. 4 shows another exemplary circuit configuration of the indoor unit control board 20 and the outdoor unit control board 21 mounted in the air conditioner 101 according to Embodiment 2 of the present invention.
  • Embodiment 2 the same parts as in Embodiment 1 are denoted by the same reference characters as in Embodiment 1, and differences from Embodiment 1 will be mainly described.
  • the first power supply line N1, the second power supply line N2, and the communication line COM have been respectively led from the first power supply terminal 3a, the second power supply terminal 3b, and the communication terminal 3c to the indoor unit control board 1.
  • the first power supply line N1, the second power supply line N2, and the communication line COM are led to the indoor unit control board 20 with a different connection, depending on whether the air conditioner 101 functions as a low standby power air conditioner or a constant-speed air conditioner.
  • the air conditioner 101 when the air conditioner 101 functions as the low standby power air conditioner, the first power supply line N1, the second power supply line N2, and the communication line COM are respectively led from the first power supply terminal 3a, the second power supply terminal 3b, and the communication terminal 3c to the indoor unit control board 20; when the air conditioner 101 functions as the constant-speed air conditioner, the first power supply line N1, the second power supply line N2, and the communication line COM are respectively led from the communication terminal 3c, the second power supply terminal 3b, and the first power supply terminal 3a to the indoor unit control board 20.
  • Embodiment 2 uses a fourth line J4, a fifth line J5, a sixth line J6, and a seventh line J7 to electrically connect parts. Connections by the fourth line J4, the fifth line J5, the sixth line J6, and the seventh line J7 will be described below.
  • the fourth line J4 interconnects the first power supply terminal 3a and the diode bridge 4.
  • the fifth line J5 interconnects the communication line COM and one side of the fourth line J4 on which the diode bridge 4 is connected.
  • the sixth line J6 interconnects the first contact 7a on the communication: line COM and the other side of the fourth line J4, on which the first power supply terminal 3a is connected.
  • the seventh line J7 interconnects the first contact 7a on the communication line COM and the communication terminal 3c on the fifth line J5.
  • the first line J1, the second line J2, the fourth line J4, and the seventh line J7 are brought into conduction, as shown in Fig. 3 . Operation of the indoor unit control board 20 in the low standby power air conditioner will be described below.
  • Alternating voltage supplied from the first power supply line N1 and the second power supply line N2 is transferred to the indoor unit control board 20 through the first power supply terminal 3a and second power supply terminal 3b disposed on the terminal block 3, respectively.
  • the voltage is transferred from the second power supply line N2 to the first power supply line N1 through the third diode 4c, the first port PW1, the second port PW2, and the second diode 4b in that order.
  • the voltage is also supplied to the electrolytic capacitor 6, so the electrolytic capacitor 6 is charged and thereby can supply a stable DC voltage to the power supply circuit 5.
  • the power supply circuit 5 Upon receipt of the DC voltages, the power supply circuit 5 can supply drive voltages to the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9. In addition, the power supply circuit 5 can supply predetermined operation voltages to circuits (not shown in Fig. 3 ) that are mounted on the indoor unit control board 20 and need these voltages.
  • the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9 can operate as described below.
  • the first contact 7a and second contact 7b of the single-pole double-throw relay 7 are conducted by a voltage supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the second port P2 of the microcomputer 9.
  • the communication circuit 8 is connected to the outdoor unit controller 10 through the second contact 7b and first contact 7a.
  • the coil 7d conducts the first contact 7a and the third contact 7c of the single-pole double-throw relay 7 by a voltage supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the second port P2 of the microcomputer 9. Then, the first power supply line N1 is connected to the outdoor unit controller 10 through the third contact 7c and the first contact 7a.
  • the communication circuit 8 is left disconnected from the first power supply line N1, so a high voltage is not applied to the communication circuit 8.
  • the third line J3, the fifth line J5, and the sixth line J6 are brought into conduction, as shown in Fig. 4 .
  • the communication line COM is connected to the outdoor unit controller 10.
  • the communication line COM (including the sixth line J6) is connected to the large relay 16, as shown in Fig. 4 .
  • the large relay 16 is disposed in the outdoor unit 101b, instead of the outdoor unit controller 10.
  • the outdoor unit controller 10 may perform control to start and stop operation. Operations of the indoor unit control board 20 in the constant-speed air conditioner will be described below.
  • the single-pole double-throw relay 7, the communication circuit 8, and the microcomputer 9 operate as described below.
  • the first contact 7a and the second contact 7b of the single-pole double-throw relay 7 are conducted by a voltage supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the third port P3 of the microcomputer 9.
  • the first power supply line N1 and the communication line COM are brought into non-conduction. Accordingly, power is not supplied to the large relay 16, so the compressor is left stopping.
  • the coil 7d conducts the first contact 7a and the third contact 7c of the single-pole double-throw relay 7 by a voltage supplied from the third port PW3 of the power supply circuit 5, in response to a control signal from the third port P3 of the microcomputer 9. Then, the first power supply line N1 is connected to the large relay 16 through the third contact 7c and the first contact 7a.
  • the indoor unit control board 20 can also adapt to a constant-speed air conditioner by bringing the first line J1, the second line J2, the fourth line J4, and the seventh line J7 into non-conduction.
  • the indoor unit control board 20 uses a single-pole double-throw relay to prevent power supply a voltage from being applied to the communication circuit 8. Therefore, the air conditioner 101 according to Embodiment 2 eliminates the need for expensive high dielectric strength parts that protect the communication circuit 8 from a power supply voltage or for protective parts, which suppresses an increase in costs.
  • the air conditioner 101 can selectively function as the low standby power air conditioner or the constant-speed air conditioner by switching the first line J1, the second line J2, the third line J3, the fourth line J4, the fifth line J5, the sixth line J6, and the seventh line J7 between the conductive state and non-conductive state.
  • connection patterns in Embodiments 1 and 2 respectively referred to as a first pattern and a second pattern, by which the first power supply line N1, the second power supply line N2, and the communication line COM are connected to the terminals of the terminal block 3, it is also possible to consider other four patterns described below.
  • An indoor unit control board 30 (not shown), an indoor unit control board 40 (not shown), an indoor unit control board 50 (not shown), and an indoor unit control board 60 (not shown), described below, are equivalent to the indoor unit control board 20, which can adapt to both the low standby power air conditioner and the constant-speed air conditioner by appropriately changing connections of lines (such as jumper lines, jumper resistors, or any other lines for which their conduction and non-conduction can be controlled).
  • lines such as jumper lines, jumper resistors, or any other lines for which their conduction and non-conduction can be controlled).
  • the air conditioner when the air conditioner functions as the low standby power air conditioner, the first power supply line N1, the second power supply line N2, and the communication line COM are respectively led from the first power supply terminal 3a, the second power supply terminal 3b, and the communication terminal 3c to the indoor unit control board 30.
  • the air conditioner functions as the constant-speed air conditioner, the first power supply line N1, the communication line COM, and the second power supply line N2 are respectively led from the communication terminal 3c, the second power supply terminal 3b, and the first power supply terminal 3a to the indoor unit control board 30.
  • the air conditioner when the air conditioner functions as the low standby power air conditioner, the first power supply line N1, the second power supply line N2, and the communication line COM are respectively led from the first power supply terminal 3a, the second power supply terminal 3b, and the communication terminal 3c to the indoor unit control board 40.
  • the communication line COM, the second power supply line N2, and the first power supply line N1 are respectively led from the communication terminal 3c, the second power supply terminal 3b, and the first power supply terminal 3a to the indoor unit control board 40.
  • the air conditioner when the air conditioner functions as the low standby power air conditioner, the first power supply line N1, the second power supply line N2, and the communication line COM are respectively led from the first power supply terminal 3a, the second power supply terminal 3b, and the communication terminal 3c to the indoor unit control board 50.
  • the air conditioner functions as the constant-speed air conditioner, the second power supply line N2, the first power supply line N1, and the communication line COM are respectively led from the communication terminal 3c, the second power supply terminal 3b, and the first power supply terminal 3a to the indoor unit control board 50.
  • the air conditioner when the air conditioner functions as the low standby power air conditioner, the first power supply line N1, the second power supply line N2, and the communication line COM are respectively led from the first power supply terminal 3a, the second power supply terminal 3b, and the communication terminal 3c to the indoor unit control board 60.
  • the air conditioner functions as the constant-speed air conditioner, the second power supply line N2, the communication line COM, and the first power supply line N1 are respectively led from the communication terminal 3c, the second power supply terminal 3b, and the first power supply terminal 3a to the indoor unit control board 60.
  • the second port P2 and the third port P3 of the microcomputer 9 have been selectively used depending on whether the air conditioner functions as the low standby power air conditioner or the constant-speed air conditioner. However, it is also possible to select only either port by using a software program written in the microcomputer 9 or conforming to the product specifications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Thermal Sciences (AREA)
  • Air Conditioning Control Device (AREA)
EP11002689.5A 2010-06-01 2011-03-31 Air conditioner Active EP2392869B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010125893A JP5289384B2 (ja) 2010-06-01 2010-06-01 空気調和機

Publications (3)

Publication Number Publication Date
EP2392869A2 EP2392869A2 (en) 2011-12-07
EP2392869A3 EP2392869A3 (en) 2014-01-15
EP2392869B1 true EP2392869B1 (en) 2018-01-10

Family

ID=44310056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11002689.5A Active EP2392869B1 (en) 2010-06-01 2011-03-31 Air conditioner

Country Status (3)

Country Link
EP (1) EP2392869B1 (ja)
JP (1) JP5289384B2 (ja)
ES (1) ES2659403T3 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102053986B1 (ko) * 2018-02-09 2019-12-09 엘지전자 주식회사 대기 전력 장치

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3831663A (en) * 1973-04-05 1974-08-27 Philco Ford Corp Air conditioner
JPS5954064U (ja) * 1982-10-04 1984-04-09 株式会社東芝 空気調和機
JPH02247448A (ja) * 1989-03-17 1990-10-03 Mitsubishi Electric Corp 空気調和機の信号伝送装置
JPH05252784A (ja) * 1992-03-03 1993-09-28 Fujitsu General Ltd ファンモータの制御方法
JP2916656B2 (ja) * 1992-10-12 1999-07-05 シャープ株式会社 空気調和機
JP4547950B2 (ja) * 2004-03-15 2010-09-22 ダイキン工業株式会社 空気調和機及び制御方法
JP5125262B2 (ja) * 2007-07-02 2013-01-23 ダイキン工業株式会社 空気調和機
JP4833168B2 (ja) * 2007-08-09 2011-12-07 シャープ株式会社 空気調和機
JP4874202B2 (ja) * 2007-09-26 2012-02-15 三洋電機株式会社 空気調和システムおよび室外機
JP2009097754A (ja) * 2007-10-15 2009-05-07 Toshiba Carrier Corp 空気調和機の通信制御装置
JP5241585B2 (ja) * 2009-04-06 2013-07-17 三菱電機株式会社 空気調和機

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
JP2011252646A (ja) 2011-12-15
ES2659403T3 (es) 2018-03-15
EP2392869A3 (en) 2014-01-15
EP2392869A2 (en) 2011-12-07
JP5289384B2 (ja) 2013-09-11

Similar Documents

Publication Publication Date Title
US7612469B2 (en) Dual-input redundant power supply
EP2241831A1 (en) Air conditioner with reduced standby power consuption of the outdoor unit on the basis of a three wire cable connection between indoor and outdoor unit
EP3753775A1 (en) Electric vehicle drive system, backup power supply device and method therefor
CN108693866B (zh) 用于更新高压控制设备中的控制软件的装置和方法
CA2606266A1 (en) Auxiliary lighting system for vehicles
EP2392869B1 (en) Air conditioner
CN109323374B (zh) 一种空调控制器及控制方法
CN113964928B (zh) 一种dc-dc适配电源及其转换控制方法
EP2816296A1 (en) Air conditioner
CN110500696B (zh) 一种控制电路及空调
US10270357B2 (en) Printed wiring board, circuit board, and control unit
US9735620B2 (en) AC power supply source switching apparatus
EP3133354A1 (en) Air-conditioning apparatus
CN112393395B (zh) 用于识别低待机功耗室外机的电路和空调
CN106354126B (zh) 面向全自动贴片机的安全上电控制方法
US10122207B2 (en) Automatic transfer switch circuits and control methods
CN107620828B (zh) 电磁阀应急供电设备和高炉冶炼炉上料系统
CN219007926U (zh) 一种转向切换电路
CN206878553U (zh) 集散控制系统现场站的电源切换装置
CN218040903U (zh) 船用双电源切换控制系统
JP7115040B2 (ja) 照明制御システムおよび端末器
CN101576736B (zh) 汽车电子控制器供电电路
CN110021994B (zh) 数字电液控制器直流电源切换系统
CN110366282B (zh) 电磁加热装置及其控制方法
CN105810507A (zh) 一种电磁继电器自适应消弧电路板

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MINAMI, TOSHIHIDE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F24F 11/00 20060101AFI20131212BHEP

Ipc: H01H 47/00 20060101ALI20131212BHEP

Ipc: H02P 7/00 20060101ALI20131212BHEP

17P Request for examination filed

Effective date: 20140715

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20170726

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 962816

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011044853

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2659403

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20180315

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180110

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 962816

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180410

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180411

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180510

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180410

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011044853

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20180331

26N No opposition filed

Effective date: 20181011

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20180410

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180331

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180410

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180331

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20110331

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180110

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 602011044853

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: GC2A

Effective date: 20210114

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230512

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240206

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240212

Year of fee payment: 14

Ref country code: FR

Payment date: 20240213

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240401

Year of fee payment: 14