JP5830719B2 - Control device for multi-room air conditioner - Google Patents

Description

  The present invention is an energy saving technique related to reduction of power consumed by an indoor unit when the operation of the multi-room air conditioner that supplies electric power from the outdoor unit to the indoor unit is stopped.

  The configuration of a conventional air conditioner is shown in FIG. As shown in FIG. 7, an outdoor unit 1 including a control unit 2, a communication unit 4, a power supply unit 3 and connected to a commercial power supply 5, and an indoor unit 6 including a control unit 8, a communication unit 9, and a power supply unit 8. In the air conditioner in which the outdoor unit 1 and the indoor unit 2 are connected one-to-one by the indoor / outdoor connection line 9, electric power necessary for the operation of the indoor unit 6 is supplied from the outdoor unit 1 through the indoor / outdoor connection line 9. Then, the operation data of the outdoor unit 1 is transmitted from the communication unit 4 of the outdoor unit 1 to the communication unit 7 of the indoor unit 6 through the indoor / outdoor connection line 9 (see, for example, Patent Document 1).

  The operation data transmitted from the remote controller 10 such as an operation start / stop instruction is received by the control unit 9 of the indoor unit 6 and is transmitted from the communication unit 7 through the indoor / outdoor connection line 9 and the communication unit 4 of the outdoor unit 1. 1 to the control unit 2.

JP-A-6-147616

  However, in the conventional configuration, even when the commercial AC power is supplied to the outdoor unit, the power for operating the control unit of the indoor unit and the communication signal to the outdoor unit are received to receive the signal from the remote controller. Since electric power for operating the communication means is necessary, the electric power for operating the outdoor unit control unit even when the operation is stopped, the electric power for operating the outdoor unit communication unit, and the indoor unit control unit It has been necessary to always supply power for operation and power for operation of the communication means of the indoor unit, and there is a problem that standby power consumption when the operation of the air conditioner is stopped increases.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a control device for a multi-room air conditioner that reduces standby power consumption during operation stoppage without impairing comfort and convenience. And

In order to solve the above-described conventional problems, a control device for a multi-room air conditioner according to the present invention includes a multi-room composed of one outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit. a control device type air conditioner, the indoor unit includes indoor controlling section connects the commercial AC power source to the outdoor unit, the indoor of the first indoor-outdoor connection lines and an indoor unit through a second indoor-outdoor connection lines It performs supply of power to the power supply unit performs through the second indoor-outdoor connection lines and the third indoor-outdoor connection lines the signaling between the communication means and the plurality of communication means of the indoor unit of the outdoor unit, plural indoor Power supply switching means for switching ON / OFF of power supply to the indoor power supply section of the machine is provided on the second indoor / outdoor connection line, and at any time when the operation of the multi-room air conditioner is stopped, by controlling the oN and OFF, the indoor power supply unit is charged in the on state of the power switching means, electrostatic When the switching means is in the off state, the indoor control unit is supplied with the electric power charged in the indoor power supply unit, and when the indoor unit receives an operation instruction when the power source switching means is in the off state, Until the power switching means is turned on, the operation instruction is given to the indoor control unit.
By turning on the power supply switching means and supplying it for an arbitrary period of time, it is possible to store only the amount of charge charged in the indoor power supply unit of the indoor unit even after the power supply to the indoor unit is cut off. It becomes possible to continuously operate the control unit and the communication means. When the electric charge charged in the indoor power supply unit of the indoor unit falls below a predetermined value, the outdoor unit determination unit turns on the power supply switching unit again to charge the indoor power supply unit of the indoor unit. Thus, since the power supply to the indoor unit is performed every arbitrary time, it is not necessary to always supply the power to the indoor unit, and there is an effect of reducing the standby power when the operation is stopped, and CO2 emission can be suppressed.

In order to solve the above-described conventional problems, the control device for a multi-room air conditioner according to the present invention includes a single outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit. A control device for a multi-room type air conditioner, wherein the indoor unit includes an indoor control unit , connects a commercial AC power source to the outdoor unit, and passes through the first indoor / outdoor connection line and the second indoor / outdoor connection line. Power is supplied to the indoor power supply unit , and signal transmission between the communication means of the outdoor unit and the communication means of the plurality of indoor units is performed through the second indoor / outdoor connection line and the third indoor / outdoor connection line. Power supply switching means for switching ON / OFF the power supply to the indoor power supply section of the indoor unit is provided on the second indoor / outdoor connection line so that the power can be switched at any time when the operation of the multi-room air conditioner is stopped. When the power switching means is on, the indoor power supply is charged. In the off state of the power supply switching means, the indoor control unit is supplied with electric power charged in the indoor power supply unit, and when the indoor unit receives an operation instruction when the power supply switching means is in the off state, Next, in order to communicate when the power supply switching unit is turned on, the standby instruction when the operation is stopped can be further reduced by storing the operation instruction in the indoor control unit .

  INDUSTRIAL APPLICABILITY The present invention can provide a control device for a multi-room air conditioner that reduces standby power consumption when operation is stopped without impairing comfort and convenience.

Configuration block diagram of an air conditioner in Embodiment 1 of the present invention Circuit diagram of the air conditioner in the first embodiment Timing chart of power supply of air conditioner in Embodiment 1 Configuration block diagram of an air conditioner in Embodiment 2 of the present invention Circuit diagram of the air conditioner in the second embodiment Timing chart of power supply of air conditioner in Embodiment 2 Circuit diagram of conventional air conditioner

A control device for a multi-room air conditioner according to a first aspect of the present invention is a control device for a multi-room air conditioner composed of one outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit. The indoor unit includes an indoor control unit, connects a commercial AC power source to the outdoor unit, and supplies power to the indoor power source unit of the indoor unit through the first indoor / outdoor connection line and the second indoor / outdoor connection line. The signal transmission between the communication means of the outdoor unit and the communication means of the plurality of indoor units is performed through the second indoor / outdoor connection line and the third indoor / outdoor connection line, and power is supplied to the indoor power supply unit of the plurality of indoor units. Power supply switching means for switching between ON and OFF of the supply is provided on the second indoor / outdoor connection line, and the ON / OFF of the power supply switching means is controlled at an arbitrary time when the operation of the multi-room air conditioner is stopped , When the power supply switching means is on, the indoor power supply unit is charged. When the power supply switching means is off, the indoor power supply section is charged. When the power charged to the indoor power supply unit is supplied to the control unit and the power supply switching means is off, and the indoor unit receives an operation instruction, the power supply switching means is then turned on. Until the operation instruction is stored in the indoor control unit, the power supply unit of the indoor unit is turned off even after the power supply to the indoor unit is cut off by supplying the power switching means for an arbitrary time. Thus, it is possible to continuously operate the control unit and the communication means for the amount of charge charged. When the electric charge charged in the power unit of the indoor unit falls below a predetermined value, the power source switching unit is turned on again by the judging unit of the outdoor unit to charge the power unit of the indoor unit. Thus, since the power supply to the indoor unit is performed every arbitrary time, it is not necessary to always supply the power to the indoor unit, and there is an effect of reducing the standby power when the operation is stopped, and CO2 emission can be suppressed.

A control device for a multi-room air conditioner according to a second aspect of the present invention is a control device for a multi-room air conditioner composed of one outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit. The indoor unit includes an indoor control unit, connects a commercial AC power source to the outdoor unit, and supplies power to the indoor power source unit of the indoor unit through the first indoor / outdoor connection line and the second indoor / outdoor connection line. The signal transmission between the communication means of the outdoor unit and the communication means of the plurality of indoor units is performed through the second indoor / outdoor connection line and the third indoor / outdoor connection line, and power is supplied to the indoor power supply unit of the plurality of indoor units. Power supply switching means for switching between ON and OFF of the supply is provided on the second indoor / outdoor connection line, and the ON / OFF of the power supply switching means is controlled at an arbitrary time when the operation of the multi-room air conditioner is stopped, When the power supply switching means is on, the indoor power supply unit is charged. When the power supply switching means is off, the indoor power supply section is charged. When the power charged to the indoor power supply unit is supplied to the control unit and the power supply switching means is off, and the indoor unit receives an operation instruction, the power supply switching means is then turned on. In order to communicate when this happens, the standby instruction when the operation is stopped can be further reduced by storing the operation instruction in the indoor control unit .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 is a configuration diagram of a multi-room air conditioner according to Embodiment 1, FIG. 2 is a circuit diagram of the multi-room air conditioner according to Embodiment 1, and FIG. It is a timing diagram of the power supply in.

  As shown in FIGS. 1 to 3, a plurality of indoor units including a power supply unit having a converter circuit and a rectifying / smoothing circuit, a control unit having a microcomputer, and communication means, and a power source having a converter circuit and a rectifying / smoothing circuit And a control unit having a determination unit and an outdoor unit having a communication unit.

  In addition, a commercial AC power supply is connected to the outdoor unit, power is supplied to the plurality of indoor units through the indoor / outdoor connection lines A1 and A2, and signal transmission between the communication unit of the outdoor unit and the communication unit of the indoor unit is performed. This is done through the indoor / outdoor connection lines A2 and A3. In this embodiment, power is supplied from the outdoor unit to the indoor unit. The first indoor / outdoor connection line is A1, the second indoor / outdoor connection line is A2, and the third indoor / outdoor connection line is A3.

  Further, the power supply switching means is provided on the same line as the indoor / outdoor connection line A1, and the power supply circuit is cut off when the power supply switching means is off. The power source switching means refers to a circuit having a circuit opening / closing function using a semiconductor element from the viewpoint of contact life and temperature rise of components. When the operation of the multi-room air conditioner is stopped, the power source switching means is turned on for an arbitrary time by the judgment means of the outdoor unit to establish a power supply circuit for the indoor unit.

Charge converted from AC power into DC power in the power supply unit of the indoor unit is charged by the occurrence of the power supply circuit starts communication means operates the control unit of the indoor unit, a communication unit of the outdoor unit of the indoor unit Communication transmission is established between the communication means.

Even after the power supply switching means is turned off by the judgment unit of the outdoor unit and the power supply circuit to the indoor unit is not established, the control unit and the communication unit of the indoor unit operate by the amount of charge charged in the power unit of the indoor unit. Therefore, it is possible to receive signal data transmitted from the remote controller, and communication is established with the communication means of the outdoor unit. The electric power of the power supply unit of the indoor unit is consumed, the charge amount is reduced, and the power supply switching unit is turned on again by the determination unit of the outdoor unit before the control unit of the indoor unit and the communication unit of the indoor unit stop operating. The power source switching means is repeatedly turned on and off by the judgment means of the outdoor unit, and the power supply circuit is repeatedly closed circuit and open circuit.

  As a result, the amount of charge charged in the power supply unit of the indoor unit can always be kept at a predetermined value or more, and the operation of the control unit and the communication means of the indoor unit can be continued. Accordingly, it is possible to receive signal data transmitted from the remote controller at any time without always supplying power to the indoor unit. Since the control unit and the communication unit can be operated without always supplying power to the indoor unit, standby power when the air conditioner is stopped can be reduced.

  1 to 3, reference numeral 1 is an outdoor unit controller, 2 is an outdoor unit control unit, 3 is an outdoor unit power supply unit, 4 is an outdoor unit communication means, 5 is a commercial AC power source, and 6 is an indoor unit controller. 7 is an indoor unit communication means, 8 is an indoor unit power supply unit, 9 is an indoor unit control unit, 10 is a remote control, 11 is an indoor / outdoor connection line A1, 12 is an indoor / outdoor connection line A2, and 13 is an indoor / outdoor connection. Lines A3 and A14 are power supply switching means, 15 is a transformer of the power supply unit 8, 16 is an electrolytic capacitor of the power supply unit 8, 17 is a constant voltage power supply of the power supply unit 8, and 18 is a microcomputer of the control unit 9 (hereinafter referred to as a microcomputer). , 19 is a diode bridge of the power supply unit 8, 20 is a communication coupler of the communication unit 7, and 21 is a determination unit of the control unit 2.

  About the separate type air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The outdoor unit 1 connected to the commercial AC power source 5 supplies power to the power supply unit 8 of the indoor unit 6 through the power source switching means 14 and the indoor / outdoor connection lines 11 to 12 provided on the same line as the indoor / outdoor connection line 11. The power supply unit 8 of the indoor unit outputs NR power obtained by converting AC power into DC power by the diode bridge 19 and the transformer 15. The NR power is input to the constant voltage power supply 17 and outputs 5 V power for operating the microcomputer 18 and the communication coupler, and the microcomputer 18 of the control unit 9 and the communication coupler 20 of the communication means 7 are operated.

  The control unit 2 of the outdoor unit transmits data such as operation information to the control unit 9 of the indoor unit through the communication unit 4, the indoor / outdoor connection lines 12 to 13 and the communication unit 7 of the indoor unit. When the operation of the separate air conditioner is stopped, the power source switching unit 14 is turned on by the outdoor unit determination unit 21, and after the power is supplied to the power supply unit 8 of the indoor unit, the power source switching unit 14 is turned off by the determination unit 21.

  The control unit 9 and the communication unit 7 of the indoor unit output NR power by the amount of electric charge supplied to the power supply unit 8 and charged by the electrolytic capacitor 16, and operate because 5V power is output from the constant voltage power supply 17. .

  At this time, when the control unit 9 of the indoor unit receives a signal such as an operation start from the remote controller 10, the signal is immediately sent to the control unit 2 through the communication means 7, the indoor / outdoor connection lines 12 to 13, and the communication means 4 of the outdoor unit. Data is transmitted and the power source switching means 14 is turned on by the judgment means 21.

As shown in FIG. 3, the NR power supplied to the power supply unit 8 of the indoor unit and charged by the electrolytic capacitor 16 is reduced by the operation of the control unit 9 and the communication means 7. The time until the control unit 9 and the communication means 7 stop operating after the output of 5V power from the constant voltage power supply 17 is below the NR power required for the operation of the constant voltage power supply 17 is stopped. The system is constructed so that the power source switching means 14 is turned on by the judgment means 21 of the outdoor unit before the communication means 7 stops operating. When the power source switching means 14 is turned on by the outdoor unit determination means 21, power is supplied again to the power supply unit 8 of the indoor unit, NR power is charged by the electrolytic capacitor 16, and the operation of the constant voltage power source 17 continues and 5V power is supplied. Is output, the control unit 9 and the communication means 7 can continue to operate.

  Even in an air conditioner that supplies power from an outdoor unit, the present invention periodically supplies power to the indoor unit to reduce standby power consumption during operation stoppage without impairing user comfort and convenience. Reduction can be achieved.

(Embodiment 2)
FIG. 4 is a configuration diagram of the multi-room air conditioner in the second embodiment, FIG. 5 is a circuit diagram of the multi-room air conditioner in the second embodiment, and FIG. 6 is a second embodiment. It is a timing diagram of the power supply in. Note that the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 4 to FIG. 6, a power supply unit having a converter circuit and a rectifying / smoothing circuit, a control unit having a microcomputer, an indoor unit having a communication means, and a power source unit having a converter circuit and a rectifying / smoothing circuit are determined. An outdoor unit provided with a control unit having communication means and a communication means, and a commercial AC power supply is connected to the outdoor unit, and power is supplied to the indoor unit through the indoor / outdoor connection lines A1 and A2, and the communication unit of the outdoor unit and the indoor unit In the multi-room air conditioner that performs signal transmission with the communication means through the indoor / outdoor connection lines A2 and A3, power is supplied from the outdoor unit to the indoor unit.

  Here, the power supply switching means is provided on the same line as the indoor / outdoor connection line A2, and the power supply circuit and the data communication circuit are disconnected when the power supply switching means is off. When the operation of the multi-room air conditioner is stopped, the power supply switching means is turned on for an arbitrary time by the judgment means of the outdoor unit to establish a power supply circuit and a data communication circuit for the indoor unit.

  Due to the establishment of the power supply circuit and the data communication circuit, the electric power converted from AC power to DC power is charged in the power supply unit of the indoor unit, the control unit of the indoor unit and the communication unit start operating, and the communication unit of the outdoor unit Communication is established between the control unit of the indoor unit and the communication means.

  Even after the power supply switching means is turned off by the judgment unit of the outdoor unit and the power supply circuit and the data communication circuit to the indoor unit are not established, the control unit of the indoor unit is equivalent to the charge charged in the power unit of the indoor unit. In order to continue the operation, signal data transmitted from the remote controller can be received. The control unit temporarily stores the signal data transmitted from the remote controller.

  The electric power of the power supply unit of the indoor unit is consumed, the amount of charge is reduced, and before the control unit of the indoor unit stops the operation, the power source switching unit is turned on again by the judgment unit of the outdoor unit, and the power supply circuit to the indoor unit A data communication circuit is established.

  At this time, the signal data stored in the control unit of the indoor unit is transmitted from the communication unit of the outdoor unit to the control unit of the outdoor unit through the communication unit of the indoor unit, and the outdoor unit operates. The outdoor unit judging means repeatedly turns on and off the power supply switching means, and the power supply circuit and the data communication circuit are repeatedly closed and opened so that the amount of charge charged in the power supply unit of the indoor unit is always a predetermined value. The above operation can be maintained, and the operation of the control unit can be continued.

  Further, since only the control unit of the indoor unit consumes the charged charge, the time for reducing the charged charge is slow, and the time for turning off the power source switching means of the outdoor unit can be set longer. Therefore, since the control unit can be operated for a long time without always supplying power to the indoor unit, standby power when the operation of the air conditioner is stopped can be further reduced.

  In the present embodiment, as shown in FIGS. 4 to 6, the power source switching means 14 is provided on the same line as the indoor / outdoor connection line 12.

  When the operation of the multi-room air conditioner is stopped, the power source switching means 14 is turned on by the judgment means 21 of the outdoor unit, and after the power is supplied to the power supply unit 8 of the indoor unit, the power source switching means 14 is turned off by the judgment means 21. The communication unit 7 of the indoor unit stops operating, the control unit 9 outputs NR power corresponding to the amount of electric charge supplied to the power supply unit 8 and charged by the electrolytic capacitor 16, and 5V power is output from the constant voltage power source 17. To do so. At this time, when the control unit 9 of the indoor unit receives a signal such as an operation start from the remote controller, the signal information is temporarily stored in the microcomputer 18 of the control unit 9.

  The NR power supplied to the power supply unit 8 of the indoor unit and charged by the electrolytic capacitor 16 is reduced by the operation of the control unit 9. The time required for the output of 5V power to stop below the NR power necessary for the operation of the constant voltage power supply 17 and the control unit 9 to stop operating is calculated in advance, and the outdoor unit is judged before the control unit 9 stops operating. The system is constructed so that the power supply switching means 14 is turned on by the means 21.

  When the power supply means 14 is turned on by the judging means 21, the power is supplied again to the power supply unit 8 of the indoor unit, the NR power is charged by the electrolytic capacitor 16, the operation of the constant voltage power supply 17 is continued, and 5V power is output. Therefore, the control unit 9 can continue the operation, and the communication unit 7 can start the operation.

  After the communication means 7 starts operation, the control section 9 immediately passes signal data such as operation start from the remote controller through the communication means 7, the indoor / outdoor connection lines 12 to 13 and the communication means 4 of the outdoor unit. To communicate.

  Even in an air conditioner that supplies power from an outdoor unit, the present invention periodically supplies power to the indoor unit, and reduces the power consumption of the indoor unit, thereby reducing the user's comfort and convenience. The standby power when the operation is stopped can be further reduced without impairing the power consumption.

  As described above, the air conditioner according to the present invention has a plurality of indoor units and has an effect of reducing standby power when the operation is stopped even in a multi-type air conditioner that supplies power from an outdoor unit. Therefore, in addition to the air conditioner, the present invention can also be applied to a control device that waits for reception of a data signal from the remote controller when the operation is stopped, such as an eco water heater.

2 Control Unit for Outdoor Unit 3 Power Unit for Outdoor Unit 4 Communication Unit for Outdoor Unit 5 Commercial AC Power Supply 7 Communication Unit for Indoor Unit 8 Power Unit for Indoor Unit 9 Control Unit for Indoor Unit

Claims (2)

A control device for a multi-room air conditioner comprising a single outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit, the indoor unit comprising an indoor control unit, the outdoor unit A commercial AC power supply is connected to the unit , power is supplied to the indoor power supply unit of the indoor unit through the first indoor / outdoor connection line and the second indoor / outdoor connection line, and the communication means of the outdoor unit and the plurality of indoor units are connected. A power source that performs signal transmission with the communication means of the unit through the second indoor / outdoor connection line and the third indoor / outdoor connection line, and switches ON / OFF of the power supply to the indoor power supply units of the plurality of indoor units Switching means is provided on the second indoor / outdoor connection line, and at any time when the operation of the multi-room air conditioner is stopped, the power switching means is turned on and off, and the power switching means is turned on. Then, the indoor power supply unit is charged and the power supply switching means is off. When the indoor control unit is supplied with electric power charged in the indoor power supply unit, and the indoor unit receives an operation instruction when the power supply switching unit is in an off state, the power supply is The controller for a multi-room air conditioner , wherein the operation instruction is stored in the indoor control unit until the switching means is turned on . A control device for a multi-room air conditioner comprising a single outdoor unit and a plurality of indoor units connected in parallel to the outdoor unit, the indoor unit comprising an indoor control unit, the outdoor unit A commercial AC power supply is connected to the unit , power is supplied to the indoor power supply unit of the indoor unit through the first indoor / outdoor connection line and the second indoor / outdoor connection line, and the communication means of the outdoor unit and the plurality of indoor units are connected. A power source that performs signal transmission with the communication means of the unit through the second indoor / outdoor connection line and the third indoor / outdoor connection line, and switches ON / OFF of the power supply to the indoor power supply units of the plurality of indoor units Switching means is provided on the second indoor / outdoor connection line, and at any time when the operation of the multi-room air conditioner is stopped, the power switching means is turned on and off, and the power switching means is turned on. Then, the indoor power supply unit is charged and the power supply switching means is off. When the indoor control unit is supplied with electric power charged in the indoor power supply unit, and the indoor unit receives an operation instruction when the power supply switching unit is in an off state, the power supply is A control device for a multi-room air conditioner , wherein the operation instruction is stored in the indoor control section in order to communicate when the switching means is turned on .

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