JP2532673B2 - Simultaneous control device for air conditioner - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device that controls two or more sets of air conditioners simultaneously.

2. Description of the Related Art Conventionally, in the case of controlling two or more sets of air conditioners in general, a signal bus line is provided in each air conditioner from an operation unit called centralized control to transfer control signals, or simply The signal is transmitted to a plurality of air conditioners. An example of the conventional air conditioner described above will be described below with reference to the drawings. In FIG. 5, the control signal generating device is usually called a centralized control device and is connected to the indoor unit of each air conditioner through an adapter. This connection is a bidirectional communication path, and a microcomputer control for bidirectional communication is introduced on the centralized control device side. The indoor unit or the adapter has its own address, determines whether the signal sent is a control signal to itself, and performs its operation. Also, the operation is returned to the centralized control device through the communication path. The conventional technique shown in FIG. 6 is a simpler system than the conventional example shown in FIG. In this, the control signal sent from the signal generation side (wired remote controller) is simply branched and simultaneously transmitted to the indoor unit A and the indoor unit B.

Problems to be Solved by the Invention However, such a conventional technique has a number of problems. The conventional technology shown in FIG. 5 requires a centralized control device equipped with microcomputer control, and also requires bidirectional communication technology, which is an advanced technology as a system and has a problem of high cost. The system was too large for the purpose of controlling both simultaneously. Further, since the power supply to the central control device side and the bidirectional communication path also requires a power supply section different from the air conditioner, the system has many problems such as high cost and restrictions on installation. Further, in the prior art of FIG. 6, the control signal generating side merely transmits the signal and does not judge whether the indoor unit is in the operating state or the stopped state. Therefore, of the two indoor units, indoor unit A
When the vehicle is in operation and the indoor unit B is in the stopped state, the operating / stopping signals from the remote controller are usually the same signal, so that they are in the inverted state. That is, when a signal is sent from the remote controller when it is desired to stop the indoor unit in the operating state, the indoor unit A stops, but the indoor unit B changes from the stopped state to the operating state. Normally, the indoor unit A and the indoor unit B should make the same movement, but in addition to the wired remote controller for centralized control in each indoor unit, a wired remote controller dedicated to that indoor unit, or a receiver for a wireless remote controller And are connected at the same time, it easily becomes the inverted state. In addition, it is possible that malfunction may occur due to noise, signal transmission may not be established, etc., and in actual use, there was a sufficient risk of making a movement opposite to the operator's intention. In view of the above-mentioned conventional problems, the present invention simultaneously controls a plurality of air conditioners with a simple system, and each operation is controlled by a dedicated remote controller or due to erroneous operation due to noise, even if not all the same operation, The purpose of the present invention is to realize a stop-priority simultaneous control, in which all of them are once brought into a stopped state, inversion control is prevented.

Means for Solving the Problems In order to solve the above problems, the present invention relates to a control signal generating end to which a signal receiving end of a control signal generating device such as a remote controller or another simultaneous control device can be connected, and two sets of indoor units. Alternatively, the indoor unit has a signal receiving end capable of connecting the signal generating end of the other simultaneous control device, the monitor signal indicating the operating state from the indoor unit or the other simultaneous control device connected to the signal receiving end,
Monitor signal comparing means for judging whether they match or not,
If the monitor signal comparing means determines that they are in agreement, the above-mentioned 2
The signal from the control signal generator is transmitted to the pair of indoor units or both the indoor unit and other simultaneous control devices, and if they do not match, the monitor signal is transmitted only to the on side and the signal to the off side. Control signal prohibiting means for prohibiting transmission, and monitor transmission for transmitting a signal obtained by ORing monitor signals from the two sets of indoor units or the indoor unit and other simultaneous control devices to the control signal generating end. And means. Also,
The present invention provides a monitor signal storage means for storing the monitor information of the monitor signal comparison means at the time of inputting a signal from the control signal generating end, and the control signal prohibiting means while the signal is continuously input by this information. The initial decision made by is continued.

Action The action of the above means is as follows. According to the present invention, when two sets of indoor units are simultaneously controlled, the indoor units are respectively connected to the signal receiving ends of one simultaneous control device, and n sets of more than two sets are simultaneously controlled. Using n-1 simultaneous control devices, connect the control signal generating end of another simultaneous control device to the signal receiving end, and connect the indoor units to the signal receiving ends of the remaining simultaneous control devices. , Monitor signal comparison means determines whether the monitor signals from a plurality of sets of indoor units match or not, and permits transmission of control signals.
It is very important to construct a system that can perform simultaneous control by prohibiting control signal prohibition means, and can control not only multiple sets of indoor units but also multiple indoor units as shown in FIG. It can be realized easily and inexpensively.

If the simultaneous control device is connected to n indoor units, the monitor ON signal is transmitted to the control signal generator even if only the nth indoor unit is operated. If a signal is sent from the control signal generator in this state, the control signal is transmitted only to the n-th indoor unit and the system is stopped. At this point, all the monitor signals are in the OFF state. Therefore, when the control signal is sent next time, the signals are transmitted to all the indoor units and are turned ON all at once.

Also, since the control signal to be transmitted is transmitted as it is,
It is not a conventional signal that simply means driving (automatic driving) or stopping, but detailed mode, temperature setting, air volume,
All control signals such as timer settings can be transmitted. Further, the simultaneous control device of the present invention can supply power from each indoor unit, and does not require a dedicated power supply section. Further, the present invention stores a monitor signal at the time of inputting a signal from the control signal generating side, and while the signal is continuously input by this information, the initial determination by the control signal prohibiting means is continued, Even if the continuous operation / stop signal of the wireless remote controller or the like comes and the monitor signal of the indoor unit is inverted while the signal comes, the control signal transmission is not permitted or prohibited. This prevents the delay of the monitor signal from each indoor unit and the disconnection of the transmission path due to the time difference.Thus, even if the control signal is continuous and long, the monitor signal from the indoor unit Even if there is a difference in the response time, the system which can surely prevent the reversing operation is realized.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described with reference to FIG. In the figure, reference numeral 1 is a remote controller which constitutes a control signal generating device for transmitting and generating a control signal, and is connected to a control signal generating end of the simultaneous control device 3. An indoor unit 2 of the air conditioner is connected to the signal receiving end of the simultaneous control device 3, gives a monitor signal to the simultaneous control device 3, and receives a control signal. Reference numeral 4 denotes an indoor unit of the second air conditioner, which gives a monitor signal to the simultaneous control device 3 and receives a control signal. When performing simultaneous control of more than two indoor units, the control signal generating end of another simultaneous control device is connected instead of the second indoor unit 4, and two units are connected to the signal receiving end of this simultaneous control device. Connect the first and third indoor units. The monitor signals a and b of each indoor unit are set to be L when ON and H when OFF, and this signal is applied to the base of the transistor 5 by the diode 6
And 7 and if either a or b is ON, the transistor 5 is turned ON and the next transistor 8 is turned ON, and the remote controller 1 has the same logic as each indoor unit monitor. Will be transmitted as a monitor signal X. On the other hand, the monitor signals a and b are input to the NAND gates (1) and (2), and the emic signal of the transistor 5 is input to one of the input signals of the NAND gate. Therefore, the outputs of NAND gates (1) and (2) are
As shown in the truth table of FIG. 7B, the NAND gate output of a, b, which is OFF, becomes L only when a and b do not match. The NAND gates (1) and (2) are input to the NAND gates (3) and (4). A control signal from the remote controller 1 is input to one of the inputs of the NAND gates (3) and (4), and as shown in the truth table,
Permission to transmit the signal A of the indoor unit 2 and the signal B to the indoor unit 4,
Control the ban. Signals are exchanged between the simultaneous control device 3 and the indoor unit 4 by the photocoupler 9, and the logic is unified with the transmission logic from the remote controller 1. Next, referring to FIG. 3, a second embodiment of the present invention will be described. Here, the same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 3, the control signal from the remote controller 1 is connected to the capacitor 11 via the diode 10, whereby the capacitor 11 is charged while the signal X is input from the remote controller 1, and this potential is H. It remains at the level. This signal is connected to the clock C which takes in the signal of the data input D port of the flip-flops 12 and 13.

Therefore, the outputs of the NAND gates (1) and (2) when the signal X is input from the remote controller 1 are transmitted to the flip-flop output Q, which is held while the signal X continues. Output Q of this flip-flop and 13
Are input to the NAND gates (3) and (4) respectively, and as described in the first embodiment, the remote controller 1
It permits or prohibits the transmission of the signal X from.

EFFECTS OF THE INVENTION As is apparent from the above-described embodiment, the present invention has a configuration in which one simultaneous control device has the configuration of the above-described embodiment.
In the case of a single air conditioner, when the two monitor signals match, the signals are transmitted to each other at the same time, and if they do not match, the signal is transmitted only to the one that is ON, OFF It realizes a (stop) priority type simultaneous control device. However, the simultaneous control device having the above-mentioned configuration can connect the simultaneous control devices having the same configuration to one signal receiving side one after another, and as shown in FIG. 4, it is limited to two indoor units. OFF for one air conditioner
(Stop) priority type simultaneous control can be realized, and it is a very valuable system that can realize simple and inexpensive simultaneous control, not a complicated and advanced system. Further, instead of the conventional operation (automatic) / stop control, it is possible to transmit all the same control signals as the signals of the one-to-one remote controller and the indoor unit, which is extremely useful. Further, by storing the permission / prohibition judgment of the signal transmission by the monitor signal when the signal is input from the remote controller side, it is possible to reliably prevent the inversion operation of the indoor unit due to the time difference of the response of the monitor signal. It realizes a very effective simultaneous control for continuous signals from etc.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention, FIGS. 2 (a) and 2 (b) are circuit diagrams and a truth table showing the first embodiment of the present invention, and FIGS. 3 (a) and 3 (b). ) Is a circuit diagram and a truth table showing a second embodiment of the present invention, FIG. 4 is a configuration diagram showing an application example of the present invention, and FIGS. 5 and 6 are configuration diagrams showing a conventional example. 1 ... remote control, 2,4 ... indoor unit (or signal receiving device), 3 ... simultaneous control device, 5 ... transistor, 6,7
...... Diode, 9 ... Photo coupler, 12,13 ... Flip-flop.

Claims (2)

(57) [Claims] 1. A control signal generating end to which a control signal generating device such as a remote controller or a signal receiving end of another simultaneous controlling device can be connected, and two sets of indoor units or an indoor unit and a signal generating end of another simultaneous controlling device. And a monitor signal comparing means for determining whether the monitor signal indicating the operating state from the indoor unit or another simultaneous control device connected to the signal receiving end is a match or a mismatch. If the monitor signal comparing means determines that they match each other, the signal from the control signal generating end is transmitted to the two sets of indoor units or both the indoor unit and another simultaneous control device, and if they do not match, the monitor signal is turned on. Control signal transmission means for transmitting the control signal only to the side and prohibiting the signal transmission to the off side, and a logical sum (OR) of monitor signals from the two sets of indoor units or the indoor unit and other simultaneous control devices. Control signal Simultaneous control device for an air conditioner and a monitor transmission means for transmitting the generated end. 2. A signal storage means for storing the monitor information of the monitor signal comparing means at the time of inputting a signal from the control signal generating end, and prohibiting the control signal while the signal is continuously input by the monitor information. The simultaneous control device for an air conditioner according to claim 1, wherein the initial judgment is continued by means.