JPH0332703B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a centralized control device for air conditioners.

BACKGROUND ART Conventionally, a system for centrally managing and controlling air conditioners installed in each room, such as in a hotel, at one location has been controlled by a control circuit as shown in FIG. In FIG. 2, an operating switch 1 and a blower 3 are connected to a power source 4, and a relay 5 and a remote switch 6 are connected in parallel to the operating switch 1 and the blower 3. The operation switch 1 controls the blower 3 by operating the change knob 7 to a strong wind notch 8, a medium wind notch 9, and a weak wind notch 10.

Further, a contact 2 of a relay 5 is provided between the blower 3 and the operation switch 1, and when the relay 5 operates, the contact 2 is directly connected to the power source 4, and the blower 3 is operated with strong wind. It was hot.

The operation in such a configuration will be explained.
When a contract holder entering a hotel room turns on the remote switch 6 from the central control room before entering the hotel, the power source 4 is applied to the relay 5 and the contact point 2 is switched between a and b. That is, the blower 3 is directly connected to the power source 4, and strong wind operation is performed regardless of the operation switch 1, so that preliminary air conditioning of the room is performed. When the contractor enters the room, the remote switch 6 is turned OFF, the relay 5 is deenergized, and the contact 2 is turned off.
The blower 3 is controlled by the operation switch 1 by switching between a and c.

Problems to be Solved by the Invention However, in such a conventional configuration, if a person who enters the room leaves the room without turning the operating knob 7 to the OFF position, the blower 3 will continue to operate in the operated position, and central control is required. Room remote switch 6
However, there was a problem in that the operation continued with the knob 7 in either the strong, medium, or weak position, resulting in wasted power consumption.

The present invention is intended to solve these problems, and aims to enable the blower to be stopped by remote control even if the person leaving the room forgets to turn it off.

Means for Solving the Problem In order to solve this problem, the present invention provides a remote switch that is connected in series with the power supply of the air conditioner, the blower, and the operating switch, and a control notch that is electrically connected when the operating switch is turned on. a relay provided between the control notch and the power source; a normally open contact of the relay provided between the blower and the operating switch; and a normally open contact of the relay connecting the remote switch and the blower. A normally closed contact is provided, and a self-holding contact of the relay is provided between the normally closed contact and the operation switch.

Effect With this configuration, when the remote switch is turned ON, the blower is operated via the normally closed contact, and when the operation switch is turned ON, the relay is energized and the normally open contact of the relay provided between the operation switch and the blower is activated. When the switch is switched to the operating switch side, the self-holding contact is turned on, and the blower is controlled by operating the operating switch regardless of the remote switch.

Embodiment An embodiment of the present invention will be described based on FIG. In the figure, 16 is an operation switch provided on the main body of the air conditioner, and a remote switch 18, a power source 19, and a blower 27 are connected in series. This operation switch 16 has a stop contact 20, contacts for a strong wind notch 21, a medium wind notch 22, and a weak wind notch 23, and a control notch 24 that is turned on regardless of each notch 21, 22, 23, and is controlled by a knob 25. Be manipulated. The blower 27 is connected to each notch 21, 22, 23 of the operating switch 16 via a normally open contact 29 of a relay 28 connected between the control notch 24 and the power supply.
The strong wind notch 21 side of the normally open contact 29 is provided with a normally closed contact 31 connected to the remote switch 18. Relay 28 also has self-holding contacts 35 between control notch normally closed contacts 31.

In the above configuration, when there is a contracted person entering the hotel and the remote switch 18 installed in the central control room
When turned on, the blower 2 is turned on via the normally closed contact 31.
7, a voltage is applied by the power supply 19, and the blower 2
7, strong wind operation is performed regardless of the operating switch 16, and preliminary air conditioning is performed before the person enters the room.

Next, when the occupant enters the room and adjusts the knob 25 of the operation switch 16 to any of the notches 21, 22, and 23 to perform the desired air conditioning, the relay 28 is connected to the power source 19 by the control notch 24, and the relay 28 is connected to the power source 19 by the control notch 24. is excited, and the normally open contact 29 becomes
It becomes ON, and the normally closed contact 31 also switches to the dotted line side,
The blower 27 is operated by the notch in which the knob 25 is aligned. At the same time, the self-holding contact 35 is also turned on. That is, the self-holding contact 35 has a self-holding circuit connected to the power supply 19 via the remote switch 18 and the relay 28, so that the self-holding contact 35 continues to turn on and stops the operating switch 16. 22, weak wind notch 23, the operation switch 1
6 is mainly operated.

Next, when a person leaves the room, the remote switch 18 can be turned off even if the person who enters the room forgets to turn off the fan 27 with the knob 25 in the strong wind notch 21, medium wind notch 22, or weak wind notch 23 position. When it is turned on, the power to the operation switch 16 is cut off, the relay 28 is also turned off, and the blower 27 is stopped. When the next preliminary air conditioning is to be performed while the knob 25 is located in any of the control notches 24, the remote switch 18 is turned on from the central control room, and the blower is turned on via the normally closed contact 31 regardless of the operation switch 16. 27 is operated, it is possible to perform preliminary air conditioning before entering the room.

Effects of the Invention As described above, the present invention provides a remote switch provided between a power source and an operation switch on the air conditioner side;
A relay provided between the control notch of the operating switch and the power source, a normally open contact of the relay provided between the operating switch and the blower, and a normally open contact connected to the remote switch. Since the relay is provided with a normally closed contact and a self-holding contact of the relay is provided between the normally closed contact and the control switch, it is possible to forget to turn off the operation switch on the air conditioner side. Even if something happens, if the air conditioner is turned off in the central control room, the air conditioner will stop, and the operation can be performed mainly from the control switch, and it can also be managed remotely, making it economical as there is no wasted power consumption due to forgetting to turn it off. Centralized management takes place. Furthermore, even if the operation switch side forgets to turn it off, preliminary air conditioning can be performed using a remote switch.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a control device for an air conditioner according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional control device for an air conditioner. 16...operation switch, 18...remote switch, 2
4...Control notch, 27...Blower, 28...Relay,
29...Normally open contact, 31...Normally closed contact, 35...Self-holding contact.

Claims (1)

[Claims] 1 An operating switch and a blower provided on the main body, a remote switch provided in series with the power source, a control notch that conducts when the knob of the operating switch is turned on, and a control notch provided between this control notch and the power source. a relay, a normally open contact of the relay provided between the operating switch and the blower, and a normally closed contact of the relay connecting the remote switch and the blower; A control device for an air conditioner, comprising a self-holding contact of the relay between the control notch and the control notch.