JPH03213946A - Operation controller of air conditioner - Google Patents

Abstract

PURPOSE:To make a positive specifying of an operation mode and improve the comfortableness in an operation state by a method wherein a code to be controlled by an outdoor control device and a code to be controlled by a specified remote controller are provided so as to define a setting state for the operation mode. CONSTITUTION:Each of indoor device 8 and outdoor device 8 may perform its own control with an operation signal from a remote controller 9 or a set temperature signal or the like. Each of codes of a control code means 11 is given or received between the control devices 8, 7 and the remote controller 9, a controlling content of each of the indoor control device 8 and the remote controller 9 are set in response to the codes. The codes are changed by a code changing means 12. In the event that only one remote controller 9 is applied, an operation mode is automatically set by a specified code means 13, a mode setting selector means 72 automatically changes over between a cooling mode and a heating mode. If an abnormal transmission occurs between the remote controller 9 and the indoor control device 8, an external code is set by an abnormal code setting means 14 and then a sub-remote control code is transmitted to another indoor control device 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an operation control device for a multi-type air conditioner equipped with a plurality of indoor units, and particularly relates to measures for setting an operation mode.

(Prior Art) In general, an operation control device for an air conditioner includes a
A plurality of indoor control units that control the indoor units are connected to an outdoor control unit that controls the outdoor units via signal lines, and a remote controller is connected to the indoor control unit, while a central controller is connected to the outdoor control unit. Some are connected and configured.

The outdoor control unit exchanges various control signals such as operation signals and mode signals with each indoor control unit, and the outdoor control unit exchanges control signals with the central controller. It controls the air conditioning operation by controlling the air conditioner and various electric expansion valves.

(Problem to be Solved by the Invention) In the operation control device for the air conditioner described above, the central controller is provided with an operation mode switch,
The central controller sends a mode signal to the outdoor control unit to set the operating mode. However, in this case, the operation mode must be set only in one place, such as the manager's room, resulting in poor operability.

Therefore, it is conceivable to provide each remote controller with an operation mode switch and set the mode. On the other hand, if it is possible to change the mode using each remote control, the mode may be changed immediately after changing the mode on one remote control, causing the problem that the driving mode is not specified and the comfort is poor. In particular, the operation mode is often changed between winter and summer, and the required mode often differs depending on the installation position of the indoor unit, such as by the window. It will be uncertain.

Furthermore, if the mode can be changed only with one remote control, there will be places where the mode cannot be changed due to changing the partition, and the operability will be inferior as in the operation using the centralized controller.

The present invention has been made in view of the above, and an object of the present invention is to make it possible to easily change the driving mode, and at the same time, to prevent a decrease in comfort.

(Means for Solving the Problems) In order to achieve the above object, the means taken by the present invention is to provide a plurality of codes that define the setting manner of the driving mode, and to make it possible to change the mode according to the codes. It is.

Specifically, as shown in FIG. 1, the means taken by the invention according to claim (1) first includes an outdoor unit (A) and a plurality of units connected in parallel to the outdoor unit (A). A refrigerant circuit (3) having a variable refrigerant flow direction so that the indoor unit (B) is in a cooling operation state or a heating operation state, and the indoor unit (B), (B)..., respectively, and an indoor control unit (8) that controls the outdoor unit (A), respectively. an external control unit (7) which transmits and receives control signals between the two; and a controller (1) which transmits and receives control signals between the indoor control unit (8) and operates the indoor unit (B);
Alternatively, the present invention is assumed to be an operation control device for an air conditioner equipped with two or more remote controllers (9).

Then, the remote control (9) and the indoor control unit (8)
, (8), ・,! : External Mll-t=-h (
7) control code means (11) for determining the setting mode of the operation mode in the indoor unit (B);
The control code means (11) includes an external code for setting the operation mode of the indoor unit (B) according to the command signal output from the external control unit (7), and an external code output from the specific remote controller (a). At least a remote control code for setting the operation mode of the indoor unit (B) according to the command signal and a neutral code indicating a state in which the specific remote control (9) for setting the operation mode of the indoor unit (B) is not set are provided. There is. In addition, code changing means (12) for changing each code of the control code means (11) is provided.
).

Further, the means taken by the invention according to claim (a) is that in the invention according to claim (1), when only one remote controller (9) is provided, the remote controller (9) and the remote controller (9) specific code means (13) for setting a remote control code for one indoor control unit (8) connected to
The configuration is such that

Further, the means taken by the invention according to claim (3) is that in the invention according to claim (1) or (2), the indoor control unit (8) automatically switches between the cooling mode and the heating mode. The configuration includes mode setting switching means (72) for setting the automatic mode to the operation mode of the remote control code.

In addition, the measures taken by the invention according to claim (4) are, in the invention according to claim (1), (2) or (3),
The control code means (11) has an automatic mode that changes the operation mode of the indoor unit (B) according to a command signal output from a specific remote control (9) and automatically switches between a cooling mode and a heating mode according to the command signal. When set to , a sub-remote control code is added to the indoor control unit (8) to independently switch the operation mode, and a sub-remote control code is added to the indoor control unit (8) to switch between the specific remote control (9) that sets the above-mentioned operation mode and the indoor control unit (8). If an abnormality occurs, the remote control (9)
Also, an abnormality code setting means (14) is provided for setting a sub-remote control code for another indoor control unit (8) to which the remote control (9) is connected and an external code has been set.

(Function) With the above configuration, in the invention according to claim (1), operation signals such as operation signals and set temperature signals are manually input from the remote control (9), and the operation signals are transmitted to the indoor control unit (8) and external control. It transmits and receives data to and from the unit (7), and controls the outdoor unit (A) and the indoor unit (B).

The control cord means (1) is connected between the external control unit (7), the indoor control unit (8) and the remote control (9).
Each code of 1) is sent and received, and the control contents of the indoor control unit (8) and remote control (9) are set according to the code. In other words, the indoor control unit (8) to which the external code was sent is the external control unit (7), and the indoor control unit (8) to which the remote control code was sent is the remote control (9).
On the other hand, only the remote control (9) that has received the remote control code will set the mode.

Then, this code is changed by the code changing means (12), and the indoor control unit (8) is changed by the external control unit (7).
Alternatively, the mode will be set using the remote control (9).

Further, in the invention according to claim (2), one remote control (
In the case of only 9), the operation mode can be automatically set using the remote controller (9).

Further, in the invention according to claim (3), it is possible to set an automatic mode that automatically switches between the cooling mode and the heating mode, and at the same time, it is possible to delete the automatic mode when the automatic mode is unnecessary. It will be possible.

Further, in the invention according to claim (4), when a transmission abnormality occurs between the remote controller (9) that has set the operating mode and the indoor control unit (8), other indoor controls that have an external code set A sub-remote control code is transmitted to the unit (8), and the operation mode is set with the remote control (9) via the indoor control unit (8).

(Effect of the invention) Therefore, according to the invention according to claim (1), the code controlled by the external control unit (7), the specific remote control (9)
) is provided to determine the setting mode of the operation mode, the mode can be changed using a specific remote control (9), and operability can be improved.

In addition, since the mode can be changed only with a specific remote controller (9) and the specific remote controller (9) can be changed, the driving mode can be reliably specified, and comfort can be improved. , it is possible to respond to changes in partitions, and it is possible to improve operability.

Further, according to the invention according to claim (a), when one remote controller (9) is used, the mode can be automatically changed using the remote controller (9), so that operability can be further improved. .

Further, according to the invention according to claim (3), since the automatic mode setting can be made unnecessary, the indoor unit (B
) The operating mode can be accurately set according to the requirements of

Further, according to the invention according to claim (4), since the operating mode can be changed even when transmission is abnormal, an accurate operating mode can be set.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

As shown in Figure 2, (X) is one outdoor unit (A
) with multiple indoor units (5 in the drawing) (B
), (B), ... are connected in parallel.

The outdoor unit (A) includes a compressor (1) and two outdoor heat exchangers (2a) and (2b), and the compressor (1) is a first compressor whose capacity is controlled by an inverter. machine (1
a) and a second compressor (1) whose capacity is controlled by an unloading mechanism.
b), the discharge side of the first compressor (1a) is connected to an oil separator (1d), and the discharge side of the second compressor (1b) is connected to a one-way valve (IC) and an oil separator ( 1e) to a high pressure gas line (31) of the refrigerant circuit (3), and the suction side to a low pressure gas line (32).

Furthermore, the return pipes (if) of the oil separators (ld) and (le)
), (Ig) are connected to the suction side of the compressor (1), and an oil equalizing pipe (1) is connected between both the positive compressors (la) and (lb).
h) is provided. In addition, each of the above outdoor heat exchangers (
2g) and (2b) are provided in parallel to the compressor (1), and the outdoor heat exchangers (2a) and (2b) are provided in parallel with the compressor (1).
One end of b) is a four-way switching valve (2)a), (2)b, respectively.
) The high pressure gas line (31) and the low pressure gas line (32) are connected via the gas pipes (22a) and (22b) equipped with
while each outdoor heat exchanger (2
Liquid pipes (33g) and (33b) of the liquid line (33) in the refrigerant circuit (3) are connected to the other ends of a) and (2b). And each of the above four-way switching valves (2) a), (2)
b) is switched to a solid line in the figure when each outdoor heat exchanger (2a), (2b) functions as a condenser, and the gas pipe (22a)
), (22b) are connected to the high pressure gas line (31), and conversely, when each outdoor heat exchanger (2a), (2b) functions as an evaporator, the regas pipe (22a) is switched to the broken line in the figure.
), (22b) are configured to communicate with the low pressure gas line (32). In addition, the above four-way switching valve (2)
One port of a), (2) and b) is connected to the capillary (23
a), a connecting pipe (24a) with (23b),
(24b) via the four-way switching valve (2)a), (2
)b) and the low pressure gas line (32).
a), (22b).

Furthermore, a gas pipe (22a) is connected to the high pressure gas line (31).
), one-way valve (4) downstream from the connection part of (22b).
), or the low pressure gas line (32) has a gas pipe (22a),
There is an accumulator (
41) respectively, and both gas lines (3
A pressure equalizing bypass path (42) is connected between 1) and (32). The pressure equalization bypass passage (42) has an on-off valve (
42a) and a capillary for flow rate adjustment (42b), one end of which is connected to the gas pipe (42b) in the high pressure gas line (31).
22a), (22b) and the compressor (1), the other end or the gas pipe (22) in the low pressure gas line (32)
a), (22b) connection and accumulator (41
) is connected between.

In addition, each liquid pipe (33a) in the liquid line (33)
, (33b) are connected to the receiver (43) and the liquid refrigerant is combined therewith, and the liquid line (33b) is connected to the receiver (43).
) is connected to the main liquid pipe (33c). Furthermore, each of the liquid pipes (33a).

(33b) has an outdoor electric expansion valve (25a), (25b)
are interposed, and the outdoor electric expansion valves (25a), (2
5b) is an outdoor heat exchanger (2a).

(2b) reduces the pressure of the liquid refrigerant when it functions as an evaporator,
It is configured to adjust the flow rate of liquid refrigerant when functioning as a condenser.

In addition, (26) is an outdoor fan placed close to the outdoor heat exchangers (2a) and (2b), and (44) is an outdoor fan formed between the low pressure gas line (32) and the main liquid pipe (33c). This is a suction heat exchanger.

Moreover, the − direction valve (
4), one end of a hot gas bypass line (45) is connected to the downstream side of the hot gas bypass line (45).
The other end is connected to the receiver (43), and a hot gas on-off valve (45a) and a capillary (45b) for adjusting the flow rate of hot gas are interposed. The hot gas on/off valve (45a) opens and transfers the hot gas to the receiver (43) when the outside air temperature falls below a preset temperature during cooling operation of the indoor unit (B).
) to maintain the liquid line (33) at a predetermined pressure.

On the other hand, the high-pressure gas line (31), low-pressure gas line (32), and main liquid pipe (33) are arranged to extend toward the indoor side, and the flow dividers (31a), (32a), and (
33d) via high pressure branch pipes (31b), (31b),
..., low pressure branch pipe (32b), (32b), -.
- and liquid branch pipe (33e).

(33e), ..., each branch pipe (31b)
(32b) and (33e) are each indoor unit (B)
(B),... are connected.

Each of the indoor units (B), (B), . . . includes an indoor heat exchanger (5) and an indoor electric expansion valve (51). And the indoor uni soto (B), (
B), ... are configured to be switchable between cooling operation and heating operation, and three third indoor units (B),
(B), ... are configured to have the same operation mode, and the three sections (DI), (D2),
(D3), and the first and second sections (D3).
One outdoor unit (B) is installed in sections I) and (D2), and three indoor units (B) are installed in the third section (D3).
) are provided in parallel. A liquid branch pipe (33e) is connected to one end of the indoor unit (B) in the first and second sections (Dl) (D2) via an indoor electric expansion valve (51).
However, a low pressure branch pipe (32) is connected to the other end via the gas pipe (5a).
b) and a high pressure branch pipe (3l b) are connected, and one end of the indoor unit (B) in the third section (D3) is connected to an indoor electric expansion valve (51), a liquid pipe (5b) and a flow divider (
A liquid branch pipe (33e) is connected to the other end via a gas pipe (5a) and a flow divider (58b) to a low pressure branch pipe (58a).
32b) and a high pressure branch pipe (3l b) are connected. Then, the high pressure branch pipe (3l b) and the low pressure branch pipe (3l b)
Opening/closing valves (52), (53) are interposed at each end of the opening/closing valve (52), (53), and the indoor heat exchanger (5) is connected to high pressure gas by controlling the opening/closing of both opening/closing valves (52), (53). It is configured to be switched and connected to the line (31) and the low pressure gas line (32), and when the indoor heat exchanger (5) functions as an evaporator (during cooling), the low pressure side on-off valve (53) However, when functioning as a condenser (during heating), the high-pressure side on-off valves (52) are configured to open and move, respectively.

Further, a low pressure bypass path (54) is connected to the liquid branch pipe (33e) on the side of the indoor units CB), (B), . . . , and the low pressure bypass path (54) is connected to the low pressure branch pipe (32
b) is connected to the downstream side of the on-off valve (53), a bypass valve (54a) and a capillary (54b) are interposed, and a piping heat exchanger (
54c) is formed to prevent flash of liquid refrigerant flowing out from the indoor heat exchanger (5) during heating. Further, a high-pressure bypass path (55) is connected to the upstream side of the on-off valve (52) in the high-pressure branch pipe (3l b), and the high-pressure bypass path (55) is connected to the gas pipe (51).
a) and a capillary (5) for flow rate adjustment.
5a), and is configured to bypass condensate that accumulates in the high-pressure branch pipe (31b) etc. during cooling.

The on-off valves (52), (53) and the bypass paths (54), (55) are integrally housed in the kit to form a branch unit (56), while the compressor (1) , outdoor heat exchangers (2a), (2b), indoor heat exchangers (5), (5), ... are connected to a high pressure gas line (31), a low pressure gas line (32) and a liquid line (33).
) to form the refrigerant circuit (3).

Note that (57) is an indoor fan placed close to the indoor heat exchanger (5).

In the refrigerant circuit (3) described above, each indoor unit) (
When cooling operation of B), (B), .

(2l b) to the solid line in Figure 2 and connect the gas pipe (22a)
, (22b) to the high-pressure gas line (31), while the indoor units (B), (B), close the high-pressure side on-off valve (52) and open the low-pressure side on-off valve (53),
The gas pipe (5a) is connected to the low pressure branch pipe (32b).

In this state, the high-pressure gas refrigerant discharged from the compressor (1) flows to each outdoor heat exchanger (2a), (2b) and condenses, and this condensed liquid refrigerant passes through the liquid line (33) to each After flowing into the indoor units (B), (B), ... and expanding in the indoor electric expansion valves (51), (51), ..., the indoor heat exchangers (5), (5), It evaporates in ..., flows through the low pressure gas line (32) and is sent to the compressor (1).
will return to.

When the above-mentioned indoor units (B), (B), ... are operated for heating, the refrigerant flows in the opposite direction to that during cooling, and the four-way selector valves (2) a), (2) of the outdoor unit (A) ) b) to the broken line in Figure 2, and open the high pressure side on-off valve (52).
The low-pressure side on-off valve (53) is closed, and the refrigerant is condensed from the high-pressure gas line (31) in the indoor heat exchanger (5), flows through the liquid line (33), and is passed through the outdoor electric expansion valve (25a), (2
5b), evaporated in the outdoor heat exchangers (2a) and (2b), and returned to the compressor (1).

During the cooling operation, for example, the double opening/closing valve (52) in one indoor unit (B).

(53) for heating operation, or conversely, during the above-mentioned heating operation, for example, switch both on-off valves (52) and (53) in one indoor unit (B) for cooling operation, so-called simultaneous cooling and heating. Driving is done. At that time, the liquid refrigerant that flowed out from the indoor unit (B) during heating operation was removed from the liquid line (33
) flows into the indoor unit (B) for cooling operation, evaporates, and flows into the low-pressure gas line (32).
It will return to the compressor (1).

During this simultaneous heating and cooling operation, two outdoor heat exchangers (
2a) and (2b) operate as evaporators or condensers depending on the indoor load, and furthermore, one unit is operated and the other one is operated.
The machine will stop operating.

Furthermore, various sensors are arranged in the refrigerant circuit (3), where (T hl) is a liquid temperature sensor that detects the temperature of the liquid refrigerant in the indoor unit h (B), and (T h2) is a liquid temperature sensor that detects the temperature of the liquid refrigerant in the indoor unit (B).
) gas temperature sensor that detects the gas refrigerant temperature, (Th3)
is a room temperature sensor that detects the intake air temperature of the indoor fan (57), and (T h4) is the outdoor heat exchanger (2a), (2b).
) side liquid temperature sensor that detects the liquid refrigerant temperature (T h5)
are a gas temperature sensor that detects the discharge gas refrigerant temperature on the outdoor side heat exchanger (2a) and (2b) side; (The) is an outside temperature sensor that is an outside temperature detection means that detects the outside air temperature;
Th7) is a discharge gas temperature sensor that detects the discharge gas refrigerant temperature of the compressor (1), (HPS) is a high pressure sensor that detects the discharge gas refrigerant pressure of the compressor (1), and (LPS) is a discharge gas temperature sensor that detects the discharge gas refrigerant pressure of the compressor (1). ) is a low-pressure pressure sensor that detects the suction gas refrigerant pressure.

Next, FIG. 3 is a system configuration diagram showing the control system of the air conditioner (X), in which an outdoor control unit controls the outdoor unit (A) by controlling the capacity of the compressor (1), etc. (6) and the branching units (56), (56), . . . by controlling the opening and closing of the on-off valves (52) and (53).
The branch control units (7), (7), . . . control the indoor units (B), (B), . . . by controlling the opening degree of the indoor electric expansion valve (51), etc. The indoor control units (8), (8), . . . are connected via signal lines (1o). Then, the branch control unit (
7) constitutes an external control unit including the outdoor control unit (6). In addition, each control unit (6), (
7), (8) are three layers (cl) (C2), (C
3)1. : The outdoor control unit (6) is on the 11th layer (C1), the branch control units (7), (7), etc. are on the second layer (C2), and the 5th layer is on the third layer (C3). The indoor control units (8), (8), . . . are classified according to their belonging. Furthermore, the indoor control units (8), (8), . . . on the third level (C3) have three sections (Di).

(D2), (D3), the above branched unin)
Indoor unit (B) connected to (56).

Corresponding to (B), ..., the first and second sections (DI) and (D2) are equipped with an indoor control unit (8
), (8), and the third section (D3) is configured such that three indoor control units (8), (8), . . . belong thereto.

In addition, the branch control unit (7) of the second layer (C2)
, '(7), .
), . . . indoor control unit (8).

(8), . . . are respectively connected to each branch control unit (7). Then, each of the above layers (C1) to (C3
), each control unit (6) to (8) is connected to an independent transmission circuit (E), (E),...
・is formed.

In each of the transmission circuits (E), (E), ..., between the first layer (C1) and the second layer (C2), the outdoor control unit (6) is the primary station, and the branch control unit (6) is the primary station. (7)
, (7) is set as the secondary station, and the second layer (C2) and the third layer
Branch control units (7) and (7) are connected to the hierarchy (C3).
) is the primary station, indoor control units (8), (8),...
・ is set as the secondary station, and each transmission circuit (E), (E)
, ..., and the branch control unit (7) sends and receives control signals to the outdoor and indoor control units (6), (8).
is configured to transfer data between. and,
Each of the indoor control units (8), (8), . . . is configured in a terminal, and the remote controllers (9), (9), .
...is connected. The remote control (9), (9)
,... are the indoor control units (8), (8),
. . . are divided into three groups (in Fig. 3, three groups of two units and one unit) are controlled as a group, and operation signals such as driving signals are input.

Further, the branch control unit (7) is configured to be connectable to the heating/cooling switching remote control (71), while the remote control unit (7) is
9) has a cooling/heating selection display section (91) that indicates whether mode setting is possible or not, and an operation switching button (92) that sets the operating mode.
), and the indoor unit (
B).

(B) The operating mode of . . . is configured to be switched between a cooling mode, a heating mode, and a blowing mode. Then, the branch control unit (7) and the indoor control unit (
8) and the remote controller (9), as shown in FIG. 8).

(8), . . . are configured such that the setting manner of the operation mode of the indoor units (B), (B), . . . is determined according to each code A to F.

Therefore, to explain the contents of each of the above codes A to F, first, the first code A is an external code, and the first code A is an external code.
The indoor control unit (8) that receives the code A (bit +000) is configured to set the indoor unit (B) to one of the cooling mode, heating mode, or ventilation mode according to the command signal from the branch control unit (7). However, the air blowing can be set using the remote control (9). The second code B (bit: 001) is a sub-remote control mode, and the indoor unit (B) is set to the cooling mode according to a command signal from the indoor control unit (8) or remote control (9) that received the second code B. It is configured to be set to heating mode, ventilation mode, or automatic mode. The second code B is an indoor control unit (8) other than the indoor control unit (8) that outputs a third code C, which will be described later.
Then, as shown in FIG. 3 (8a), the branch control unit (
If there is no indoor control unit (8) to which the remote control (9) is connected to the branch control unit (7), the output is output to one indoor control unit (8) connected to the branch control unit (7). ing. The automatic mode is a mode in which the cooling mode and the heating mode are automatically switched based on the suction temperature of the indoor unit (B), and the second code B is the indoor control mode that receives the second code B. Unit (8)
is configured to automatically switch based on its own suction temperature, etc. The third code C (bit: 010) is a remote control code, and the indoor control unit (8) that receives the third code C switches the indoor unit (B) into cooling mode and heating mode according to the command signal from the remote control (9). Any one of a group of indoor control units (8), (8), .
In other words, the output is output to one main unit which is a main unit and is connected to one branch control unit (7), and the other indoor control units (8) of each group are output.
, (8), . . . In other words, the slave unit etc. is configured to receive the first code A and receive a command signal for the operating mode of the master unit from the branch control unit (7). At that time, in automatic mode, the indoor control unit (8) of the master unit switches the cooling mode etc. based on its own suction temperature etc., and the indoor control unit (8) of the slave unit (8), (8), etc.
... will be followed, but the indoor control unit (8) that received the above second code B is configured to independently switch the cooling mode etc. in automatic mode separately from the indoor control unit (8) of the main unit. has been done. In other words, the second code B and the third code C are the indoor control units (8), (8) connected to one branch control unit (7).
), . . . The fourth code D (bit: 110) is a neutral code, and is in a state where the third code C is being set and the specific remote control (9) that outputs the operation mode command signal is not yet activated. Configured to indicate the status of the settings. The 5th code E (bit 011) is the automatic mode of the 3rd code C, and the others are the 3rd code C.
The sixth code F (bit: 111) is configured in the same manner as the fourth code D, and is waiting for the fifth code E to be set.

That is, each code A to F is sent to the branch control unit (7).
), the indoor control unit (8), and the remote controller (9), and the operation mode of the indoor unit (B) is set using the branch control unit (7) or the remote controller (9). Moreover, if two or more indoor control units (8) of the master unit to which the remote controller (9) is connected are connected to the branch control unit (7), one remote controller (9) and the remote controller (9) The third code C or the fifth code E is transmitted to one indoor control unit (8) to which the Code D and 6th code F are connected to the remote control (9) and the indoor control unit (8).
The configuration is such that the priority conditions can be transferred to other remote controllers (9).

Further, the operation switching button (92) of the remote controller (9) switches the operation mode, and if the operation switching button (92) of the remote controller (9) with the above-mentioned priority condition set is held down for a predetermined period of time, for example, 4 seconds. , cancel the above priority conditions,
All remote controls (9) linked to one branch control unit (7).

(9) It is configured to be in a priority condition unset state (fourth and sixth codes D, F) in which a priority condition can be set to any one of the above, and in the unset state, the cooling/heating selection display section (
91) is configured to flicker. and,
While the cooling/heating selection display section (91) is flickering,
When the operation switching button (92) of one remote control (9) is pressed, the remote control (9) is configured to set priority conditions and set the operation mode.

Also, each of the branch control units (7), (7).

... has a jumper (72) which is a mode setting switching means.
is provided, and the jumper (72) is connected to the jumper (7
If 2) is disconnected, the automatic mode cannot be set in the third code C. In other words, if the air conditioning mode is automatically switched based on the suction temperature, etc. of one indoor unit (B), the requests from other indoor units (B) that are controlled by that operating mode will be ignored, so only the operating mode can be changed manually. settings can be made.

Next, the structure and operation of setting the operation mode of the indoor unit (B), which is a feature of the present invention, will be explained based on FIGS. 5 to 8.

First, FIG. 5 shows the control flow of the setting operation of each code A to F in each branch control unit (7), and the code changing means (12) using the operation switching button (92) of the remote control (9). is configured, and when the power is turned on, in step STI, whether to set the operation mode with the cooling/heating switching remote control (71) or with the indoor remote control (9).
It is determined whether the heating/cooling switching remote control (71) is to be used depending on the settings of the branch control unit (7), etc., and the process moves to step ST2. In step ST2, data RCC of the first code A is sent to each indoor control unit (8).
At the same time as transmitting DT, the instruction flag RCC3F is reset.In other words, each code is configured to set the instruction flag RCC3F and transmit it to the indoor unit (8), but for the first code A, the instruction flag RCC3F is set and the instruction flag RCC3F is set. Logic is set unrelated. This step ST2
Now, the first code A is connected to all indoor control units (8), (8), ... connected to this branch control unit (7).
and all indoor control units (8), (8) with the command signal of the branch control unit (7).

The operation mode setting for ... is performed.

On the other hand, when setting the driving mode using the indoor remote control (9), the process moves from step ST2 to step ST3, where it is determined whether or not to set the automatic mode, that is, whether or not to set the third code C. , it is determined whether to set the fifth code E, and if the third code C is to be set, step S
Move on to T4. In this step ST4, all the indoor control units (8), (8), . . . have an instruction flag RC.
The fourth code D is transmitted in the reset state of the CSF, that is, all indoor control units (8), (8), etc. are sent at the initial stage of installation.
Since ・ is set to the first code A, the instruction flag R
CCSF is being reset.

After that, from step ST4 to step ST5, Sr.
1 and Sr1 are determined in order. In step ST5, it is determined whether the unit number 0 is one unit or not.
Unit No. 6.

In step ST7, whether or not 0 is 0 is determined by unit N.
O: Determine whether there are 0 or multiple units. In other words, this unit N
o, 0 is set in the indoor control unit (8) of the parent unit to which the remote controller (9) is connected among the group 1 controlled by the remote controller (9), and the indoor control unit (8) of the parent unit is branched. The number of units in the control unit (7) is sequentially determined. Then, the indoor control unit (8) of the parent unit is
In the case of a unit, the process moves from step ST5 to step ST8, and in step 5T81, the unit NO.

While setting the instruction flag RCC5F to the indoor control unit (8) of No. 0 and transmitting the third code C, step 5T82
At this point, the first code A is transmitted to the indoor control unit (8) of the child unit other than unit No. 0. In other words, the remote control (9) is automatically sent to the indoor control unit (8) of the parent unit.
) enables the operation mode setting, and the corresponding step ST
8 constitutes a specific code means (13).

Also, if there is no indoor control unit (8) of the master unit, that is, if it is controlled by a remote control (9) linked to another branch control unit (7) (see Fig. 3 (8a)). ), move from step ST6 to step ST9,
In step 5T91, polling address No.
The instruction flag RCCSF is set to the indoor control unit 0 (8) and the second code B is transmitted, while the first code A is transmitted to the other indoor control units (8).

In addition, if there are multiple indoor control units (8) of the parent unit, the process moves from step ST7 to step 5T10, and step 5TI of the subroutine in step 5TIO is executed.
In I, first, each indoor control unit (8
), (8),...
It is determined whether an indoor control unit (8) with code C or fifth code E exists. In other words, this stage, Tsubu 5
TIO is a case where connections are changed, etc., and the third
Or the indoor control unit (8
) is 0 or 2 or more, the process moves to step 5712, and in state 2-1, the command flag RCC3F is set to the indoor control unit (8) of the base unit of unit N000, and the fourth code D is transmitted. On the other hand, in state 2-2,
The first code A is transmitted to the indoor control unit (8) of the slave device. When the remote control (9) with the priority conditions set for setting the operation mode is identified, that is, when the operation switching button (92) is pressed from the state where the priority conditions are not set and the cooling/heating selection button (91) is flickering. , the remote control (
9) and the third code C via the indoor control unit (8).
is sent to the branch control unit (7), and upon receiving this third code C, the process proceeds from step 5T12 to step 5T1.
3, an instruction flag R is sent to the indoor control unit (8).
CC5F is set and transmitted, and the process moves to step 5T14.

In this step 5T14, in state 3-2, the third code C is sent to the indoor control unit (8) that sent the third code C, and it is confirmed that the indoor control unit (8) has become the third code C. While later resetting the support flag RCC3F, in state 3-1, the indoor control unit (8) other than the indoor control unit (8) that sent the third code C
The first code A is transmitted to. In this step 5T14, only one remote control (9) with priority conditions set is specified, and one indoor control unit (8) whose operation mode is set with the remote control (9) is specified. In response to the command signal from the one indoor control unit (8), the branch control unit (7) sends the command signal to the other indoor control unit (8).
), (8), . . . will send the command signal for the operation mode.

Also, in step STI 1 above, the third or fifth code C
, E, if it is determined that there is only one indoor control unit (8), the indoor control unit (8) is transmitted in step 5T15.
) after setting the instruction flag RCC5F and transmitting it, the process moves to step 5T14, and the indoor control unit (8)
3rd code C to the other indoor control unit (8),
(8) Send the first code A to .

Then, steps ST5 to ST7 and step 5T
The IO operation will be repeated.

On the other hand, if it is determined in step ST3 to set the automatic mode, the process moves to step 5T4-1. From this step 5T41 to step 5TIO
-1 corresponds to steps ST4-5TIO above,
The control operations are the same except that the fifth code E1 is transmitted instead of the third code C, and the sixth code F is transmitted instead of the fourth code D, so a detailed explanation will be omitted.

Further, in step ST8 and step 5T8-1, if a transmission abnormality occurs between the indoor control unit (8) that transmitted the third or fifth code C, E and the remote control (9), the branch control unit (7 ) or set unit N
The indoor control unit (8) of the next unit number among O1
) to set the operation mode between the indoor control unit (8) and the remote control (9) that can transmit the command signal to the indoor control unit (8). Other indoor control units (8) based on (
8), . . . operation modes are set and controlled. Also, in step ST9 and step 5T9-1,
If a transmission error occurs between the indoor control unit (8) that sent the second code B and the remote control (9), the second code B is sent to the indoor control unit (8) at the next polling address, and The operation mode of the control unit (8) is set by a remote control (9). Then, when the above-mentioned transmission abnormality is resolved, it is configured to return to the original state, and this step ST8. ST9 and steps 5T8-1, 5T9
-1 constitutes an abnormality code setting means (14).

Furthermore, the above step 5TIO and step 5TIO
-1, if a transmission abnormality occurs between the indoor control unit (8) that sent the third or fifth code C1E and the remote control (9), the indoor control of the master unit to which the other remote control (9) is connected If there is one unit (8), the third or fifth code C, E is sent to the indoor control unit (8), and if there are two or more indoor control units (8) of the base unit, this code is sent to the indoor control unit (8). The fourth or sixth coats D and F are transmitted to the indoor control units (8) of all base units, the other remote controllers (9) are set to a priority condition-unset state, and the cooling/heating selection display section (91) is flickered. Then, press the operation switch button (
92) is pressed, priority conditions are set on the remote controller (9), and the operation mode is set using the remote controller (9).

6 and 7 are control flow diagrams and state transition diagrams showing the setting operation of each code A to F in the indoor control unit (8).
In I, the branch control unit (7), that is, determines whether or not the first code A is received from outside, and outputs the first code A.
When the
), the first code is sent to the remote controller (9), and the first code A is sent to the central controller (C) (not shown) installed in the indoor control unit (8), and the self The indoor control unit (8) of (1) is set to the state of the first code A, and the operation mode is set according to the command signal from the branch control unit (7). Thereafter, the process moves to step 5T103, where the instruction flag RCC5F is set and transmitted to the remote controller (9) and central controller, and the process returns.

Further, when the indoor control unit (8) receives another signal from the branch control unit (7), step 5T104
It is determined whether or not the second code B has been received, and if the second code B is received, the process moves to step 5T105, and the seventh
The state becomes state ■ shown in figure (b), the first code A is sent to the remote controller (9) and the central controller, and the own indoor control unit (8) is set to the state of the second code B. In the automatic mode, allows you to set your own operating modes such as cooling mode. Thereafter, the process returns via step 5T103.

If no signal has been received from the branch control unit (7), the determination at step 5T106 is NO, and the process returns via steps 5TIO1, 5T104 and step 5T106, while the set instruction flag RCC5F is Once received, proceed to step 5T below.
Judgments 107 to 5T111 are made, and if the signal does not correspond to any of the signal contents, the process returns. This step 5T1
07-STI 11 determines which code C-F the transmission code of the branch control unit (7) corresponds to,
When the third code C is received, the process moves from step 5T107 to step 5T112, and returns via the above step 5T103. When the fifth code E is received, the process moves from step D7108 to step 57113, and returns via the above step 5T103. If the current own code and the received code match, the process returns from step 5T109 to step ST103, and if the fourth code D is received, the process moves from step 5TIIO to step 5T114. , returns via the above step 5T103, and upon receiving the sixth code F, steps STI 11 to step 5
The process moves to T115 and returns via the above step 5T103.

Therefore, to explain the contents of each step 5T112 to 5T115, first, in step 5T112, the state [stock] shown in FIG. The indoor control unit (8) is set to the state of the third code C, and in step 5T113, the state becomes the state (C) of FIG. 7, and the fifth code E is sent to the remote controller (9) and the central controller. , the own indoor control unit (8) is set to the state of the fifth code E. And which state [phase],
0, the operation mode is also set based on the command signal from the remote controller (9).

Further, in the above step STI 14, the state becomes the state (d) in FIG. and also follow step 5 above.
At T115, the state becomes ■ as shown in Fig. 7 (e), and the remote control (
9) and transmits the sixth hood E to the central controller, and sets its own indoor control unit (8) to the state of the sixth code E. In both states (1) and (2), each indoor control unit (8), (8), . . . is set to a state in which the priority condition of the remote controller (9) is not set.

On the other hand, in FIG. 7(c) above, when the instruction flag RCCSF is reset from the state [stock], the state moves to the state ■ in FIG. 7(d), and from the state ■, the instruction flag RCCSF8F is reset.
When the is reset, the state moves to state (3) in FIG.
8) establishes the state of the third or fifth code C, H and resets the instruction flag RCC5F output by itself (
(see block S1).

Then, in the above state (3) in FIG. 7(d), when the indoor control unit (8) receives the third code C from the remote controller (9) or the central controller with the instruction flag RCC5F reset, that is, when the indoor control unit (8) receives the third code C from the remote controller (9) or the central controller, ) When the operation switching button (92) is pressed while the cooling/heating selection display section (91) of the controller (see block S2) is flickering, the instruction flag RCC3F is set and transmitted to the remote controller (9) and central controller (see block S2), and the above state is set. Moving to (2), the indoor control unit (8) enters the third code C state. Conversely, in the above state (3), when the instruction flag RCC3F is reset, the fourth
When code D is received, the set instruction flag RCC3
Send F, move to the above state ■, and set the instruction flag RCCSF.
(see block S1). On the other hand, Fig. 7 (
The operation between state 2 and 0 in e) is similar to that between state 2 and 0, and the state changes upon reception of the fifth code E or the sixth code F.

Depending on the state between ■ and ■ and between ■ and ■, the indoor control unit (8) changes between the remote control (9) with priority conditions for setting the operation mode, the specified state, and the unspecified state with no priority conditions set. do.

In addition, in the above states ■, ■, ■, ■, [phase] and 0, if the central controller sets and transmits the 4i key change prohibition flag, the states ■, ■, ■.

■, 0 and 0, and transmits the first code A to the remote controller (9) without changing its own code C-F and without changing the transmission code to the central controller, and then transmits the first code A to the remote controller (9). (9) turns off the cooling/heating selection display section (91) and prohibits mode change. When the temperature control change prohibition is lifted, the state returns to the original state, but when the third code C or the fifth code E is received from the remote controller (9) in the state ■ and [phase], the state changes to the state ■ and the state ■. . In addition, in the above states ■, ■, ■, and ■, when each code C-F is received from the remote control (9), the above states ■, ■,
We will move on to ■ and ■.

Next, Fig. 8 shows each code A to F in the remote control (9).
is a state transition diagram showing the setting operation of , where state ■ is the initial state after the power is turned on until each code A to F is received;
When each code A-FRCC is received from this initial state from the branch control unit (7) via the indoor control unit (8), the first code A goes to state ■, the third code C goes to state ■, and the fourth code In D, the state moves to state ■, in the fifth code E, the state moves to state ■, and in the sixth code F, the state moves to state [phase]. For the second code B, please use the remote control (
9) is irrelevant, so there is no state for code B.

In this state ■, the mode flag BSF is reset in the state of the first code A, and the cooling/heating selection display section (91
) is off and the operation mode cannot be changed, meaning that no priority conditions have been set.

However, in this state ■, if the operation switching button (92) indicated by BS is pressed, the operation mode of the indoor unit (B) is changed between cooling and ventilation or heating and ventilation, and block S
Change the display with ll. Further, when the pond code C-F is received from the indoor control unit (8) from the above state (3), the state shifts to the states (2), (2), (2), and @1 corresponding to each code C-F.

Therefore, for example, when the third code C is received, the state changes to the state (2) via the states [phase], (2), (2), and a priority condition for setting the operation mode is provided. The remote control (9) then sets the operation mode using the operation switching button (92). In other words, the operation switching button (92) is pressed to 1.
When pressed twice, the display changes in block S12, moving to state ■, setting the timer for 4 seconds, and when the operation switch button (92) is turned off within the 4 seconds, moving to state ■, setting the timer to 2.
The second is set, and when the timer times up, the state returns to state (2) and the state of third code C is maintained.

If the operation switching button (92) is pressed again within 2 seconds in the above state ■, the state changes to ■, the display changes in order, and the state changes from ■ to ■, and the mode flag BSF is reset from the set state. When this happens, the operation mode will change according to the display.

On the other hand, if the operation switching button (92) is continuously pressed for 4 seconds or more in the above state ■, the state changes to state ■, the fourth code D state is entered, the priority condition cancellation signal is output, and the priority condition It becomes unconfigured and branch control unit 1 (
All remote controllers (9), (9), . . . connected to 7) are in a state where priority conditions are not set. When this priority condition is not set, the cooling/heating selection display section (91) flickers, and if you press the operation switch button (92) of any remote controller (9) in this state, the remote controller (9) changes to Moving on to ■,
The other remote control (9) moves to state ■.

As a result, the remote control (9) for setting the driving mode will be changed.

In addition, from state ■ to state ■, the mode flag BSF
remains set, the operation mode will not change and the display will return to its original state.

Also, between the state ■ and the state [phase], the fifth code E and the sixth code F are changed in the same way as between the above states ■ and ■, and the state The change and the operation mode change are performed.

As described above, each code A is transmitted between the branch control unit (7), the indoor control unit (8), and the remote control (9).
-F is sent and received to set the operating mode.

Therefore, the first control unit controlled by the branch control unit (7)
Code A1 Since the third code C, which is controlled by a specific remote controller (9), etc., is provided to determine the setting mode of the operation mode, the mode can be changed using a specific remote controller (9), which improves operability. It is possible to improve the

Also, the mode can only be changed using a specific remote control (9).
In addition, since the specific remote control (9) can be changed, the driving mode can be reliably specified and comfort can be improved, and the partition can also be changed, improving operability. can be achieved.

Furthermore, in the case of one remote controller (9), the mode can be automatically changed using the remote controller (9), so that operability can be further improved.

Further, since setting of the automatic mode can be made unnecessary using the jumper (72), it is possible to accurately set the operating mode according to the request of the indoor unit (B).

Furthermore, since the operating mode can be changed even when transmission is abnormal, an accurate operating mode can be set.

Although this embodiment includes the branching unit (56) and the branching control unit (7), the present invention provides an indoor unit (B
) to the outdoor unit (A), and connect the indoor control unit (
8) may be connected to the outdoor control unit (6).

Further, the connection mode of the remote control (9) is not limited to the embodiment,
For example, a whole room control unit (8).

(8), ...respectively remote control (a), (a)
.

... may be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the present invention. 2 to 8 show an embodiment of the present invention, FIG. 2 is a refrigerant circuit diagram of an air conditioner, and FIG. 3 is a system configuration diagram of the control system. Fig. 4 is a diagram showing the contents of the control code means, Fig. 5 is a control flow diagram of the branch control unit, Fig. 6 is a control flow diagram of the indoor control unit, Fig. 7 (a),
(b), (c). (d) and (e) are state transition diagrams, and FIG. 8 is a state transition diagram of the remote controller. (3)...Refrigerant circuit (6)...Outdoor control unit (7)...Branch control unit (8)...Indoor control unit (9)...Remote control (11)...Control code Means (12)... Code changing means (13)... Specific code means (14)... Abnormal code setting means and 2 others 280-

Claims (1)

[Claims] (1) an outdoor unit (A) and a plurality of indoor units (B) connected in parallel to the outdoor unit (A);
B)..., a refrigerant circuit (3) whose refrigerant flow direction is variable so that the indoor unit (B) is in a cooling operation state or a heating operation state, and the indoor unit (B), (B), A plurality of indoor control units (8), (8), . . .
and an external control unit (7) that controls the outdoor unit (A) and transmits and receives control signals to and from the indoor control unit (8), and a control signal that is transmitted between the indoor control unit (8) and the indoor control unit (8). In the operation control device for an air conditioner, the operation control device includes one or more remote controllers (9) for transmitting and receiving and controlling the operation of the indoor unit (B), wherein the remote controller (9) and the indoor control unit (8), ( 8), . ) includes an external code that changes the operation mode according to the command signal output from the external control unit (7), and a remote control code that sets the operation mode of the indoor unit (B) according to the command signal output from the specific remote control (a). and a neutral code indicating that the specific remote control (9) for setting the operation mode of the indoor unit (B) is not set, and a code change for changing each code of the control code means (11). An operation control device for an air conditioner, characterized in that means (12) is provided. (2) In the operation control device for an air conditioner according to claim (1), when only one remote controller (9) is provided, the remote controller (9) and one indoor room to which the remote controller (9) is connected An operation control device for an air conditioner, characterized in that a specific code means (13) for setting a remote control code for a control unit (8) is provided. (3) In the operation control device for an air conditioner according to claim (1) or (2), the automatic mode in which the indoor control unit (8) automatically switches between cooling mode and heating mode is set to the operation mode of the remote control code. An operation control device for an air conditioner, comprising a mode setting switching means (72) for setting a mode. (4) In the operation control device for an air conditioner according to claim (1), (2) or (3), the control code means (11)
In addition to changing the operation mode of the indoor unit (B) according to the command signal output by a specific remote control (9),
When the command signal sets the automatic mode that automatically switches between cooling mode and heating mode, the indoor control unit (
8) While a sub-remote control code that independently switches the operation mode is added, if a transmission abnormality occurs between the specific remote control (9) that sets the operation mode and the indoor control unit (8), the remote control (9) ) and another indoor control unit (8) to which the remote controller (9) is connected and an external code is set, an abnormality code setting means (14) is provided for setting a sub-remote control code. Operation control device for air conditioning equipment.