JPS60162145A - Control circuit for separate type air conditioner - Google Patents

Abstract

PURPOSE:To reduce the number of connecting wires between the inside and outside units to two of them so as to eliminate restrictions on installation works by connecting room power source from respective room units to the outside unit, and interlocking respective compressors to respective room units so that respective fans may be operated by either power source of respective room units. CONSTITUTION:The power source of a first room unit 31 is connected to a first relay 42 and a second relay 44 via connecting wires 52, 53 between the inside and outside of the room, and also is connected to a first fan 48 and a second fan 49 via a third relay 46. The two connecting wires 52, 53 between the inside and outside of the room are connected to a first compressor 36, and a second room power source is connected to the first relay and second relay 44 via two connecting wires 54, 55 and further is connected to the first fan 48 and second fan 49 via the third relay 46. The two connecting wires 54, 55 between the inside and outside of the room are connected to a second compressor 39. By this arrangement, respective fans 48, 49 can be operated by the power source from either one of the room units 31, 32, and as a result, only two connecting wires are required for connecting the inside and outside of the room for respective room units, abating restrictions on installation works and affording a cost reduction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a control circuit for a separate air conditioner.

Conventional configuration and its problems 2 Conventionally, the control circuit of a fractional air conditioner in which one outdoor unit and a plurality of indoor units are connected has been a circuit as shown in FIG. 1 is outdoor unit, 2 is indoor unit 1, 3 is outdoor unit 1
This is a terminal connected to the No. 2 indoor unit (not shown) provided on the side. In the outdoor unit 1, 4 is an outdoor power supply, 5 is a terminal board, which is connected to the outdoor power supply 4 with connecting wires 6.7, 8.9, and connected to the No. 1 compressor 10 and No. 2 compressor 11. There is.

12 is a No. 1 blower, 13 is a No. 2 blower, and one end of these sub-blowers 12.13 is connected to the terminal board 5, and the other end is connected to one end of the No. 1 compressor 1o. On the indoor unit 2 side, a terminal board 14 is provided, and connecting wires 16° 16, 17, 18 are connected to a low-return switch 19. 20 is a thermostat for controlling the room temperature, one end is connected to the connection line 18, the other end H (high) side is connected to the d line of the rotary switch 19, and the L (low) side is connected to the e
connected to the line. 21 is an indoor blower, one end is connected to the connecting wire 22'' = 16, the other end is connected to the rotary switch 19, the weak notch is connected to the b line, the standard notch is connected to the c line, and the strong notch is connected to the d line. are doing.

Between the outdoor unit 1 and the indoor unit 2, there are a number 1 for indoor power supply, a number 1 compressor 10, a number 2 compressor 11, a number 1 blower 12, and a number 2 blower 13. Connection lines 23.24°25.26 provided for communication therebetween are connected.

However, in such conventional control circuits, the outdoor power supply 4 was used to match the phases of the power supply applied to the No. 1 blower 12 and the blower 13, so the communication line between the indoor and outdoor units was Four wires are required: 23, 24, 25°26, one for the compressor, one for the blower, and one for the indoor power supply. In addition, in outdoor unit 1, the outdoor unit current capacity and 1
In ~, two compressors and two blowers are required, and therefore, the wire diameter of the connecting wire becomes thicker than the current capacity, which has the disadvantage of being restricted by electrical construction regulations. Was.

Purpose of the Invention The present invention solves the above-mentioned drawbacks of the conventional technology, and has the purpose of distributing the power supply to the indoor power supply and distributing it to each indoor unit, reducing the number of indoor and outdoor communication lines to two, and eliminating construction regulations. The purpose is to do so.

Structure of the Invention The present invention provides a first relay and a second relay connected to the indoor unit power supply via two indoor/outdoor communication lines, and a second relay connected to the first relay and the second relay. 3 relays and
Through this third relay, it is connected to the No. 1 blower and the No. 2 blower, and also connected to the No. 1 compressor from the two indoor/outdoor connection lines, and the two indoor/outdoor connection lines are also connected to the No. 2 indoor power supply. The first relay and the second relay are connected via the first relay and the second relay, the third relay is connected to the first relay and the second relay, and the blower No. 1 and the blower No. 2 are connected through the third relay. In addition to connecting to the blower, it is also connected to the No. 2 compressor from the two indoor and outdoor communication lines, and supplies power to each indoor unit, and each compressor is linked to each indoor unit, and each blower In this example, three two-pole relays are used to control each indoor unit so that it can be operated using either power source.

DESCRIPTION OF EMBODIMENTS One embodiment of the present invention will be described with reference to FIG. 30 is the outdoor unit, 31 is the No. 1 indoor unit, 32 is the double indoor unit, which has the same circuit as the No. 1 indoor unit 31. Q 33 is the terminal board, which connects the terminal 34 to the No. 1 indoor unit 31, and the No. 2 indoor unit. It has a terminal 35 to the indoor unit 32. 36 is a No. 1 compressor, which is connected to the terminal 34 through connecting wires 37 and 38, and 39 is a No. 2 compressor, which is connected to the terminal 35 through connecting wires 40 and 41. 42 is a first relay, which has two poles and has a coil 4.
It has 3.

A second relay 44 has two poles and a coil 45. A third relay 46 has two poles and a coil 47. 48 is a No. 1 blower, which is installed in parallel with the No. 2 blower 49, and one end is connected to the first relay 46 via a connecting wire 60.
The other end is connected to the A pole of the first relay 46 via the connecting wire 51.
It is connected to the D pole of On the other hand, communication between the No. 1 indoor unit 31 and the No. 2 indoor unit 32 with the indoor/outdoor units is via the indoor/outdoor connection line 52,
53゜54.55-] and No. 1 indoor unit 31
Inside, there is a terminal 57 provided on a terminal board 66. 58 is a rotary switch provided with a ventilation contact and a cooling contact.

6. 69 is an indoor fan, one end is connected to the indoor power supply 61 via the connection wire 60, and the other end has a strong notch connected to the d line of the low-return switch 58, a standard notch connected to the C line, and a weak notch connected to the B line. is connected to. 62 is a thermostat for adjusting the room temperature, the G pole is connected to the indoor power supply 61 via the connection wire 63, the contact H is connected to the e line of the rotary switch 58, and the contact wire is connected to the d line. The indoor unit 32 also has the same control circuit as the No. 1 indoor unit 31, so a description thereof will be omitted.

In the above configuration, the operation of the control circuit will be explained.

From the indoor power supply 61, one end connects the connecting wire 66.66°, the cooling contact of the rotary switch 58, the H wire, the connecting wire 67, and the terminal 5.
7. Through the indoor/outdoor connection line 53, terminal 34, and connection line 38 (-
to the No. 1 compressor 36, the other end is from the indoor power supply 61, the connection line 63, the f line that serves as the cooling contact for the thermostat 620G to H10-tally switch 68, the connection line 68, the terminal 67, the indoor/outdoor communication line 52, the terminal 34 , the No. 1 compressor is energized via the connection wire 37, and the No. 1 compressor 36 is operated.Next, when power is also applied from the indoor/outdoor connection wires 52 and 53, one end is connected from the terminal 34. Line 69.111JL'-
42, one end of the coil 43 is energized, and the other end of this coil 43 is energized to the connection wire 71, the terminal 34, and the indoor/outdoor communication line 63 from between DE and E of the second relay 44 via the connection wire 70.
7. The coil 43 is energized and the two pole contacts are reversed. When reversed, the connecting wire 69 and the first relay 42 (, A, the connecting wire 72, one end of the coil 47, and the other end of the coil 47 connects the connecting wires 73, 70, between D and E of the second relay 44, The connection wire 71 and the terminal 34 are energized, the coil 47 of the third relay 46 is energized, and the two-pole contacts are reversed. By reversing the first relay 42 and the third relay 46, the No. 1 blower 48 and One end of the No. 2 blower 49 is connected to the connection line 60, between A and C of the third relay 46, between the connection line 72, and A of the first relay 42.
-C, the connection wire 69, terminal 34, and indoor/outdoor communication line 62 are energized, and the other end is connected to the connection wire 61, D and E of the third relay 46, and the No. 1 blower 48, which is two blowers, is connected. , and the No. 2 blower 49 are operated by electricity supplied from the No. 1 indoor unit 31.

Next, when the No. 2 indoor unit 32 is operated, the indoor/outdoor connection line 54
．． 66, the indoor/outdoor communication line 64 is energized, and the No. 2 compressor 39 is energized from the terminal 36 via the connection line 40. On the other hand, the connection line 41 is passed to the terminal 35, and the indoor/outdoor communication line is energized. 56 and the No. 2 compressor 39 is operated.

Next, when electricity is similarly applied from the indoor/outdoor connection wires 54 and 55, electricity is applied from the terminal 35 to the connection wire 76 and one end of the coil 45 of the first relay 44, and the other end of this coil 46 is connected to the connection wire 76, Between DE and E of the first relay 42, connection wire 77, terminal 3
5. The indoor/outdoor communication line 66 is energized, the coil 46 of the second relay 44 is energized, and the two pole contacts are reversed. By reversing the second relay 44, one end of the No. 1 blower 48 and the No. 2 blower 49 are connected to the connecting wire 50 and the 8-3 of the third relay 46.
The connection wire 78, the A-C of the second relay 44, the connection wire 75, the terminal 36, and the indoor/outdoor communication line 64 are energized, and the other end is
Connection line 61, between D and E of the third relay 46, connection line 79,
Electricity is applied between D and E of the first relay 42, the connection line 72, the terminal 35, and the indoor/outdoor communication line 56, and the two blowers, the No. 1 blower 48 and the No. 2 blower 49, are connected to the No. 2 indoor unit 32. It is operated by electricity supplied from.

That is, when the No. 1 indoor unit 31 is operating, the coil 43 of the first relay 42 and the coil 47 of the third relay 46 are excited, and when the No. 2 indoor unit 32 is operating, the coil 4 of the second relay 44 is excited.
Therefore, the indoor power supply of the No. 1 indoor unit 31 and the No. 2 indoor unit 32 is supplied to the outdoor unit 30, and each compressor 36.39
is linked to each indoor unit 31.32, and each blower 48.49
In this way, the indoor units 31 and 32 are operated using either power source. Effects of the Invention As described above, the present invention allows the indoor power source from each indoor unit to be energized to the outdoor unit, and each indoor unit For each compression 10.1. ,−
.

When the machines are linked, when one of the indoor units is operating, the coils of the first relay and the third relay are energized, and when the other indoor unit is operating, the coil of the second relay is energized. Each blower
Since each indoor unit can be operated using either power source, only two indoor/outdoor connection lines are required for each indoor unit, which eases construction regulations and reduces costs.
Since the compressor power supply is often distributed, the power supply capacity is -
0

[Brief explanation of the drawing]

Figure 1 is a control circuit diagram of a conventional separate air conditioner.
FIG. 2 is a control circuit diagram of the separate air conditioner according to the present invention. 30...Outdoor unit, 31.32...Indoor unit, 36°39...Compressor, 42...
1st relay, 44... 2nd relay, 46...
...Third relay, 48.49...Blower, 5
2,53,54.55・・・Indoor/outdoor connection line・

Claims (1)

[Claims] A first relay and a second relay on the outdoor unit side connected to each power source of the plurality of indoor units via an indoor/outdoor communication line, and a third relay connected to the first relay and the second relay. , via this third relay, are linked to a plurality of connected blowers and, like this blower, to a plurality of compressors that operate corresponding to a plurality of indoor units via the two indoor/outdoor communication lines. A separate air conditioner comprising a circuit, which supplies indoor power from the plurality of indoor units, and is controlled by each of the relays so that the plurality of blowers can be operated from any of the plurality of indoor units. control circuit.