JPH06257836A - Control device for air conditioner - Google Patents

Abstract

PURPOSE:To prevent a damage of each of control devices by a method wherein an electrical power line and a signal line of an indoor device and an outdoor device are detected for every devices, and in the case that the electrical power line is normal, the signal line is connected to each of control devices for the indoor device and the outdoor device and in turn in the case of a wrong connection of wire, a power source is separated from each of the control devices. CONSTITUTION:In the case that an electrical power line 11 is normally connected to an indoor relay terminal 13 through an electrical power receiving end 9, an indoor signal line connecting device 15 is operated, thereby a signal line 10 of the indoor relay terminal 13 is connected to an indoor transmitting or receiving circuit 3. In turn, in the case that the electrical power line 11 is abnormally connected to the indoor relay terminal 13 through the electrical power receiving end 9, for example, the signal line 10 and the electrical power line 11 are erroneously connected, the indoor signal line connecting device 15 is not operated and the signal line 10 of the indoor relay terminal 13 is separated from the indoor transmitting or receiving circuit 3. Then, at this time, the power source from the electrical power receiving end 9 is electrically energized to an erroneous wiring display device 17 and an erroneous wiring of the signal line 10 and the electrical power line 11 is informed. As to the connection of the electrical power line 11 to the outdoor relay terminal 14, the connection is controlled by the outdoor signal line connecting device 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner, which is capable of protecting an indoor control device and an outdoor control device by detecting miswiring of power lines and signal lines of an indoor unit and an outdoor unit. The present invention relates to a control device for an air conditioner.

[0002]

2. Description of the Related Art As protection of a conventional air conditioner control device, there is one as described in JP-A-63-143452. FIG. 3 is a control block diagram showing communication between an indoor unit and an outdoor unit that protects a control device of a conventional air conditioner.

In FIG. 3, 1 is an indoor unit, 2 is
Is an indoor control device for controlling the indoor unit, and 3 is an indoor transmitting / receiving circuit for performing signal communication with the outdoor unit 5.

A signal line 10 for communication is connected between the indoor transceiver circuit 3 and the outdoor transceiver circuit 7 of the outdoor unit 5. As with the indoor unit 1, the outdoor unit 5 is also provided with an outdoor control device 6 that controls the outdoor unit 5. Further, various input devices 4 such as a room temperature setting means and a room temperature detecting means are connected to the indoor control device 2.

On the other hand, a drive device 8 is connected to the outdoor control device 6. The drive device 8 drives each valve and the like. Reference numeral 9 is a power receiving end, and the commercial power source obtained from this power receiving end is supplied to the outdoor unit 5 via the power line 11. The relay contact 12 is inserted between the power receiving end 9 and the power line 11, is provided in the indoor unit 1, and is for turning on / off the power supply.

Next, the operation will be described. When the operation command is input to the indoor control device 2 by the input device 4, the operation data is transmitted from the indoor control device 2 to the indoor transmission / reception circuit 3 and the signal line 1.
0, it transmits to the outdoor control apparatus 6 via the outdoor transmission / reception circuit 7.

The outdoor control device 6 controls the outdoor unit 5 in accordance with the received signal. Further, in order to inform the indoor unit 1 of each state of the outdoor unit 5, data is sent from the outdoor control device 6 via the outdoor transmission / reception circuit 7, and the indoor control device 2 analyzes the data and outputs the data. Continue operation while constantly monitoring the status.

If the outdoor unit 5 is not energized, that is, if the power line 11 and the signal line 10 are erroneously wired, data transmission with the outdoor control device 6 is not established.

In this way, when the data is sent from the indoor control device 2 but the returned data is not returned from the outdoor control device 6, the outdoor unit 5 is not energized, that is, the power line 11 or the signal line 10 is not supplied. Detecting that the wiring is wrong, the relay 12 is activated to stop the supply of electric power to the outdoor unit 5.

[0010]

In the above-mentioned conventional techniques, the signal line 1 of the indoor unit 1 and the outdoor unit 5 is used.
0, erroneous wiring of the power line 11 can be detected only when there is no return data, and even if the relay 12 is turned on / off after detecting the erroneous wiring, the outdoor control device 6 is directly connected to the commercial line 6 during that time. The outdoor control device 6 may be destroyed by applying power. Further, in this publication, there is a problem that the indoor control device 2 may be broken due to the incorrect wiring of the signal line 10 and the power line 11 of the indoor unit 1.

The present invention solves the conventional problems by individually detecting the power line and the signal line for supplying electric power to the indoor unit and the outdoor unit, and destroying the indoor control unit and the outdoor control unit at the time of incorrect wiring. It is an object of the present invention to provide a control device for an air conditioner, which can promptly notify an erroneous wiring without any trouble.

[0012]

To achieve this object, an air conditioner control apparatus according to the present invention comprises an indoor transceiver circuit for communicating between an indoor unit and an outdoor unit, an outdoor transceiver circuit, an indoor unit, An indoor control device and an outdoor control device that control the outdoor unit, a power line that supplies power to the indoor control device and the outdoor control device, a signal line that connects the indoor transmission / reception circuit and the outdoor transmission / reception circuit, and a power line in the indoor unit. And an indoor relay terminal that connects the signal line to the indoor control device and enables wiring work after the indoor unit is installed in the building, and the indoor relay terminal installed between the indoor relay terminal and the indoor control device. An indoor signal line connecting device is provided which is activated when a power line is connected to the indoor unit to supply power to the indoor unit and which connects a signal line between the indoor relay terminal and the indoor control device.

Between the outdoor relay terminal for connecting the power line and the signal line to the outdoor control device in the outdoor unit and enabling wiring work after the outdoor unit is installed in the building, and between the outdoor relay terminal and the outdoor control device. An outdoor signal line connecting device is provided which is installed and which is activated when a power line is connected to the outdoor relay terminal to supply power to the outdoor unit and which connects a signal line between the outdoor relay terminal and the outdoor control device.

When the power line and the signal line of the indoor relay terminal are erroneously wired, the indoor signal line connecting device does not operate, and an erroneous wiring display device is provided for displaying erroneous wiring.

[0015]

With the above configuration, the power line and the signal line for supplying power to the indoor unit and the outdoor unit are individually detected, and when the wiring of the power line is normal, the signal line is connected to the indoor control device and the outdoor control device. However, by disconnecting the power supply from the indoor control unit and the outdoor control unit when the wiring is incorrect, the incorrect wiring can be immediately notified without destroying the indoor control unit and the outdoor control unit.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An air conditioner controller according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a control block diagram of a control device for an air conditioner according to an embodiment of the present invention, which is constructed as follows. The same parts as those in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted. The parts different from those in FIG. 3 will be mainly described.

Reference numerals 13 and 14 denote a power line 11 for supplying power to the indoor control device 2 and the outdoor control device 6 of the indoor unit 1 and the outdoor unit 5, the indoor transmission / reception circuit 3 and the outdoor transmission / reception circuit 7.
In order to connect the power line 11 and the signal line 10 to the indoor control device 2 and the outdoor control device 6 in the indoor unit and the outdoor unit, and to perform wiring work after installing the indoor and outdoor units in the building. And an indoor relay terminal and an outdoor relay terminal.

Reference numeral 15 is installed between the indoor relay terminal 13 and the indoor control device 2, and operates when the power line 11 is connected to the indoor relay terminal 13 and power is supplied to the indoor unit 1, and the indoor relay terminal 13 is provided. And an indoor signal line connecting device for connecting a signal line between the indoor control device 2 and the indoor control device 2.

Reference numeral 16 is installed between the outdoor relay terminal 14 and the outdoor control device 7, and operates when the power line 11 is connected to the outdoor relay terminal 14 to supply power to the outdoor unit 5, and the outdoor relay terminal 14 is provided. And an outdoor signal line connecting device for connecting a signal line between the outdoor control device 6 and the outdoor control device 6.

Reference numeral 17 denotes an indoor signal line connection device 15 when the power line 11 and the signal line 10 of the indoor relay terminal 14 are erroneously wired.
Is a miswiring display device that does not operate and displays miswiring.
FIG. 2 is a flow chart of a control device for an air conditioner according to an embodiment of the present invention, which will be described together with the constituent elements of the control block diagram of FIG.

2A is a flow chart of an embodiment of the present invention in the indoor unit 1, and FIG. 2B is a flow chart of an embodiment of the present invention in the outdoor unit 5. .

In step 101, when the power line 11 is normally connected to the indoor relay terminal 14 from the power receiving end 9, the indoor signal line connecting device 15 operates (step 102), and the signal line 10 of the indoor relay terminal 14 is It is connected to the indoor transceiver circuit 3 (step 103).

In step 101, if the power line 11 is abnormally connected to the indoor relay terminal 14 from the power receiving end 9, for example, if the signal line 10 and the power line 11 are erroneously wired, the indoor signal line connecting device 15 does not operate ( In step 104), the signal line 10 of the indoor relay terminal 14 is disconnected from the indoor transmitting / receiving circuit 3 (step 105). At this time, the signal line 10 is energized by the power source from the power receiving end 9 to the miswiring display device 17 and the signal line 1
Improper wiring between 0 and power line 11 is immediately found (step 1
06).

In step 201, when the power line 11 is normally connected to the outdoor relay terminal 15 from the power receiving end 9, the outdoor signal line connecting device 16 operates (step 202) and the signal line 10 of the outdoor relay terminal 15 is It is connected to the outdoor transmission / reception circuit 7 (step 203).

In step 201, if the power line 11 is abnormally connected to the outdoor relay terminal 15 from the power receiving end 9, for example, if the signal line 10 and the power line 11 are erroneously wired, the outdoor signal line connecting device 16 does not operate ( In step 204), the signal line 10 of the outdoor relay terminal 15 is disconnected from the indoor transmitting / receiving circuit 7 (step 205).

As described in the present embodiment, even if the signal line and the power line to the indoor unit and the outdoor unit are erroneously wired, the erroneous wiring is detected without damaging the indoor control device and the outdoor control device, and the wiring is performed normally. By making such a display, it becomes possible to facilitate the wiring work for the indoor and outdoor units of the air conditioner.

[0028]

INDUSTRIAL APPLICABILITY As described above, the control device for an air conditioner of the present invention connects the power line and the signal line to the indoor control device in the indoor unit and enables the wiring work after the indoor unit is installed in the building. It is installed between the indoor relay terminal and the indoor relay terminal and the indoor control device, and operates when the power line is connected to the indoor relay terminal and power is supplied to the indoor unit. By installing an indoor signal line connection device that connects the signal lines of the above, it detects the power line and the signal line that supplies power to the indoor unit, and if the wiring of the power line is normal, connect the signal line and the indoor control device, and By disconnecting the power supply from the indoor control device during wiring, wiring can be performed without destroying the indoor control device.

Similarly, it is installed between the outdoor relay terminal in the outdoor unit and the outdoor control device, and operates when the power is supplied to the outdoor unit by connecting the power line to the outdoor relay terminal,
By installing the outdoor signal line connection device that connects the signal line between the outdoor relay terminal and the outdoor control device, when the power line and the signal line of the outdoor relay terminal are miswired, the outdoor signal line connection device does not work. If the wiring of the power line is normal, the signal line is connected to the indoor control device and the outdoor control device, and in the case of incorrect wiring, the power supply is disconnected from the outdoor control device so that the outdoor control device can be wired.

Further, since the erroneous wiring can be immediately notified, it is possible to effectively protect the wiring work, and it is possible to shorten the correction time of the wiring work even if the wiring work is mistaken for the wiring work of the signal line and the power line. .

[Brief description of drawings]

FIG. 1 is a control block diagram of an air conditioner control device according to an embodiment of the present invention.

FIG. 2A is a flowchart of an indoor unit in an air conditioner control device according to an embodiment of the present invention. FIG. 2B is a flowchart of an outdoor unit in an air conditioner control device according to an embodiment of the present invention.

FIG. 3 is a control block diagram showing communication between an indoor unit and an outdoor unit that protects a control device of a conventional air conditioner.

[Explanation of symbols]

 1 Indoor Unit 2 Indoor Control Device 3 Indoor Transmitter / Receiver Circuit 4 Input Device 5 Outdoor Unit 6 Outdoor Controller 7 Outdoor Transmitter / Receiver Circuit 8 Drive Device 9 Power Receiver 10 Signal Line 11 Power Line 13 Indoor Relay Terminal 14 Outdoor Relay Terminal 15 Indoor Signal Line Connection device 16 Outdoor signal line connection device 17 Miswiring display device

Claims (3)

[Claims] 1. An indoor transmission / reception circuit for communicating between an indoor unit and an outdoor unit, an outdoor transmission / reception circuit, an indoor control device and an outdoor control device for controlling the indoor unit and the outdoor unit, the indoor control device, and an outdoor unit. A power line that supplies power to the control device, a signal line that connects the indoor transmission / reception circuit and the outdoor transmission / reception circuit, and the power line and the signal line in the indoor unit that are connected to the indoor control device and the indoor unit is built. Installed between the indoor relay terminal and the indoor control device to enable wiring work after installation, and connect the power line to the indoor relay terminal to supply power to the indoor unit A control device for an air conditioner, comprising: an indoor signal line connection device that is activated when the indoor relay terminal is connected to connect a signal line between the indoor relay device and the indoor control device. Place 2. An outdoor relay terminal for connecting a power line and a signal line to an outdoor control device in the outdoor unit and enabling wiring work after the outdoor unit is installed in a building, the outdoor relay terminal and the outdoor control. An outdoor signal line connection that is installed between devices and that operates when the power line is connected to the outdoor relay terminal and power is supplied to the outdoor unit and that connects the signal line between the outdoor relay terminal and the outdoor control device. The control device for an air conditioner according to claim 1, further comprising: a device. 3. A miswiring display device for displaying miswiring when the power line and the signal line of the indoor relay terminal are miswired and the indoor signal line connecting device does not operate. 1. The control device for an air conditioner according to 1.