JPH11237100A - Operation controller for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set the temperature of each indoor unit from a central remote controller at low cost without sacrifice of convenience of radio system by indicating any one of prevailing indoor set temperatures determined by individual radio remote controllers and the central remote controller at the control section of an indoor unit. SOLUTION: When an indoor temperature is set from the individual radio remote controller P side, an indoor unit A receives a temperature set signal and a set temperature is indicated at an indicating section 42 connected with the control section 40 for the indoor unit A. On the other hand, a signal is transmitted to a wired central remote controller S and a set temperature is indicated at the indicating section 75 thereof. When the set temperature is altered from the central remote controller S side, the indoor unit A receives an altered temperature set signal which is indicated at the indicating section 42 thereof. Currently set temperature can thereby be recognized in each room and then the set temperature can be altered further from the individual radio remote controller P with no anxiety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for centrally controlling an air conditioner having a wireless remote controller.

[0002]

2. Description of the Related Art In recent years, with the spread of air conditioners, multi-type air conditioners in which a plurality of air conditioners are connected to the same home and a plurality of indoor units are connected to one outdoor unit have been installed. Is increasing. In addition, homes based on air conditioning throughout the building, such as highly airtight and highly insulated homes, are beginning to spread, and indoor units are being installed in all rooms of a single home. In such a case, there is a need to manage the operation status of the indoor units in each room, or to operate and stop the indoor units in each room at the same time.Therefore, the indoor units in each room are controlled collectively in another place. A centralized remote control device that can be used has been released.

FIG. 6 shows an example of this, in which a centralized remote control device is newly added to a plurality of single air conditioners or multiple air conditioners, and each indoor unit and the centralized remote control device are connected by electric wires to form a control circuit. By operating the individual (or entire) run or stop switch of each indoor unit provided on the centralized remote control device to operate or stop the individual (or entire) indoor unit on the spot It has become. At the same time, the operation state is displayed by turning on or off the operation display section corresponding to each indoor unit provided on the centralized remote control device.

When the operation is started on the individual wireless remote control device side during stoppage, the corresponding indoor unit transmits an operation signal to the centralized remote control device, and the operation display section of the corresponding indoor unit on the centralized remote control device is displayed. When the operation is stopped on the individual wireless remote control device side during driving, the stop signal is transmitted similarly to turn off the operation display section of the corresponding indoor unit on the centralized remote control device.

As another example, see, for example,
As disclosed in Japanese Patent No. 169041, not only the operation / stop of each indoor unit but also the room temperature of each indoor unit can be controlled.

[0006]

However, in the above-mentioned conventional configuration, when the indoor temperature is to be controlled from the centralized remote control device, the temperature setting signal can be transmitted to the indoor unit, but the individual wireless communication is performed from the indoor unit. Since it cannot be transmitted to the remote control device, a mismatch occurs between the set temperature displayed on the centralized remote control device and the set temperature displayed on the individual wireless remote control device that can only be determined on the relevant indoor unit side, In other words, there is no choice but to check the centralized remote control device to determine what temperature is currently set, and there is a problem that it is necessary to leave the room and go to the place where the centralized remote control device is installed for that purpose. Therefore, at present, the function of setting the indoor temperature of each indoor unit is omitted from the centralized remote control device.

[0007] Although the problem of the set temperature can be solved by making the individual remote control device a wired type, most of the current air conditioners are of a wireless type, and the convenience of the wireless type that the operation can be easily performed at hand is provided. You will lose.

Further, even in the case of a wireless system, the communication method between the indoor unit and the individual wireless remote control device can be changed from the one-way communication from the individual wireless remote control device to the indoor unit as in the present case. This can be achieved by using two-way communication that enables transmission and reception, but not only increases the cost of the equipment, but also increases the size of the individual wireless remote control device by incorporating the transmission / reception unit, and further reduces the battery life due to increased power consumption. This causes various problems such as deterioration of usability.

The present invention solves such a conventional problem, and is an air conditioner that is inexpensive without losing wireless convenience and that can set the temperature of each indoor unit from a centralized remote control device. It is an object of the present invention to provide an operation control device.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention connects an individual wireless remote control device for individually operating and a centralized remote control device for operating a plurality of indoor units in one place. The control unit of the indoor unit, which forms the control circuit, has one of the indoor setting temperatures determined by the individual wireless remote control device and the indoor set temperature determined by the centralized remote control device. A display means for displaying the set temperature is provided.

With the above arrangement, when the indoor temperature is set from the individual wireless remote control device side, the indoor unit receives the temperature setting signal, displays the set temperature on the display unit connected to the control unit of the indoor unit, and is connected by wire. A signal is transmitted to the centralized remote control device, and the set temperature is displayed on the centralized remote control device. When the set temperature is changed from the centralized remote control device, the indoor unit receives the changed temperature setting signal and displays the changed set temperature on the display unit of the indoor unit. In each room, it is possible to confirm whether or not the temperature is set, and the set temperature can be confirmed, and the set temperature can be further changed from the individual wireless remote control device with ease.

As described above, the indoor temperature setting function can be added to the centralized remote control device at a low cost without using the individual remote control device with the inconvenient wired specification and without changing to an expensive communication method.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 connects an individual wireless remote control device for individually operating a centralized remote control device for operating a plurality of indoor units in one place to form a control circuit. On the control unit of the configured indoor unit, one of the indoor set temperature determined by the individual wireless remote control device and the indoor set temperature determined by the centralized remote control device is displayed as a priority indoor set temperature. A display means is provided.

With the above arrangement, when the indoor temperature is set from the individual wireless remote control device side, the indoor unit receives the temperature setting signal, displays the set temperature on the display unit connected to the control unit of the indoor unit, and is connected by wire. A signal is transmitted to the centralized remote control device, and the set temperature is displayed on the centralized remote control device.

When the set temperature is changed from the centralized remote control device, the indoor unit receives the changed temperature setting signal and displays the changed set temperature on the display unit of the indoor unit. In each room, it is possible to confirm whether or not the temperature is set, and the set temperature can be confirmed, and the set temperature can be further changed with ease from the individual wireless remote control device.

[0016] This makes it possible to add the indoor temperature setting function to the centralized remote control device at low cost without changing the individual remote control device to a wired specification that is inconvenient to use and without changing to an expensive communication method. .

According to a second aspect of the present invention, the method of setting the room temperature in the control unit of the individual wireless remote control device is set to an absolute setting for directly transmitting a desired temperature or a relative setting for transmitting a plus or minus deviation. Switching means for switching between the two.

Since the current set temperature can be confirmed on the display unit of the indoor unit without confirming the centralized remote control device, there is no problem in changing the temperature setting from the individual wireless remote control device. If the set temperature display on the wireless remote control is the absolute setting for directly setting the desired temperature, the temperature display on the indoor unit display and the temperature display on the display on the individual wireless remote control will be different. The operability is uncomfortable, but if a plus or minus deviation, for example, ± 1K can be set, and a maximum of ± 4K can be changed, the operability can be eliminated.

Further, when the centralized remote control device is not connected, since it can be used by setting it as an absolute setting, there is an advantage that it can be shared and it can be implemented at low cost.

According to a third aspect of the present invention, an upper limit value and a lower limit value are set for the indoor set temperature determined by the individual wireless remote control device or the centralized remote control device which is absolutely set.

According to a fourth aspect of the present invention, when the individual wireless remote control device is set to the relative setting and the operation is started, the operation is started at a predetermined initial set temperature.

According to a fifth aspect of the present invention, the initial set temperature has different values when the cooling operation is set and when the heating operation is set, and the initial set temperature when the cooling operation is set is “the indoor set temperature”. The upper limit value-the maximum deviation ", and the initial setting temperature at the time of heating operation setting is" lower limit value of the indoor set temperature + the maximum deviation "
It is what it was.

The absolutely set individual wireless remote control device and centralized remote control device usually both have the same temperature setting range.

For example, the settable minimum temperature is set to "16
° C ”, the maximum temperature that can be set is“ 30 ° C ”, and the maximum deviation of the individual wireless remote control device set as relative setting is“ ± 4K ”, and now the centralized remote control device is set to“ 28 ° C ”and operated. After the start, when the set temperature is changed to the maximum value on the plus side, that is, “+ 4K” by the individual wireless remote controller, “28 ° C. + 4
K ”is set to“ 32 ° C. ”.

Conversely, if the centralized remote controller sets the temperature to "18 ° C.", then the individual wireless remote controller changes the set temperature to the negative maximum value, that is, "-4K", the "18.degree.
4K "would be set to" 14 ° C ". Therefore, "30
° C ”and“ 16 ° C ”as the set upper limit and the set lower limit, respectively, and the change of the setting exceeding the set upper limit and the set lower limit is canceled, so that no inconsistency occurs in the set temperature.

Even if a centralized remote control device is connected,
The operation is not always performed from the centralized remote control device, but may naturally be started from the individual wireless remote control device. The operation can be started at a predetermined initial set temperature even when the individual wireless remote control device is kept in the relative setting. The initial setting temperature is “30” during cooling.
"C-4K" is "26C", and when heating is "16C + 4K"
, And the operation can be started generally at an appropriate temperature.

[0027]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a refrigeration circuit diagram of an air conditioner according to an embodiment of the present invention, FIG. 2 is a functional block diagram showing a configuration of a control circuit of the embodiment, and FIG. 3 is a detailed view of an individual wireless remote control device in FIG. FIG. 4 is a detailed view of the display unit when the temperature display switching switch of the individual wireless remote control device is set to a relative setting, and FIG. 5 is a detailed view of the centralized remote control device in FIG.

In FIG. 1, A, B, C, and D are indoor units, and Q is an outdoor unit. The following refrigeration circuits are formed on these units.

The oil separator 1 is provided at the discharge port of the compressor 10.
The outdoor heat exchanger 13 is connected via the one- and four-way valves 12, and the liquid-side main pipe 14 is connected to the outdoor heat exchanger 13.
The liquid-side main pipe 14 is provided with a main electric expansion valve 15 for controlling the degree of superheat of the entire refrigeration circuit. Main electric expansion valve 15
, The liquid-side main pipe 14 becomes liquid-side branch pipes 14a, 14b,
14c, 14d, and each liquid side branch pipe 14a,
14b, 14c, 14d are the indoor units A,
B, C, D indoor heat exchangers 30a, 30b, 30c, 3
0d. Each liquid side branch pipe 14a, 14b, 14c,
In 14d, the refrigerant is decompressed and the indoor units A, B, C,
An electric expansion valve 16 is provided to adjust the flow rate of the refrigerant to D. The gas side branch pipe 17 is connected to the indoor heat exchangers 30a, 30b, 30c, 30d of the indoor units A, B, C, D.
a, 17b, 17c and 17d are connected. Gas side branch pipe 1
7a, 17b, 17c and 17d are gathered in the gas side main pipe 17 inside the outdoor unit Q, and the gas side main pipe 17
Is connected to the suction port of the compressor 10 via the four-way valve 12 and the accumulator 18.

Another outlet of the oil separator 11 provided between the discharge port of the compressor 10 and the four-way valve 12 is connected to the suction port of the compressor 10 via a capillary tube 19, The oil discharged from 10 is returned to compressor 10.

Thus, a heat pump refrigeration circuit is configured. That is, a cooling circuit is formed by flowing the refrigerant in the direction of the solid line arrow in the cooling operation,
By switching the direction valve 12, the refrigerant flows in the direction of the dashed arrow in the drawing to form a heating circuit.

Each of the indoor units A, B, C and D is provided with a suction temperature sensor 31 for detecting the temperature of the indoor air. Further, each of the indoor heat exchangers 30a, 30b, 30c,
An indoor blower 32 is provided near 30d, and the outdoor heat exchanger 1
An outdoor blower 20 is provided near 3.

Next, the control circuit will be described with reference to FIGS. 2, 3, 4 and 5. Each indoor unit A, B, C, D
(The indoor units B, C, and D are not shown) each include an indoor unit control unit 40 including a microcomputer and its peripheral circuits. The indoor unit controller 40 includes a wireless remote control type operation controller (hereinafter, referred to as an individual remote controller) P, a suction temperature sensor 31 for detecting indoor air temperature, and an indoor motor 4 for driving an indoor blower 32.
1. Each of the liquid crystal display units 42 for displaying the set temperature is connected.

The individual remote controller P has an individual remote controller control unit 50 comprising a microcomputer and its peripheral circuits. SW51 for setting normal operation and stop in this individual remote controller control unit 50, SW52 for setting temperature,
SW53 for setting the air volume, SW54 for setting the wind direction,
Operation mode switching SW for setting cooling operation or heating operation
55 and a liquid crystal display 56 for displaying the set temperature, air volume, air direction, and operation mode. Further, a switch 57 for switching a temperature display portion 56a, which is a part of the liquid crystal display portion 56, between an absolute temperature display and a relative temperature display is connected.

The centralized remote control device (hereinafter referred to as a centralized remote control) S is provided with a centralized remote control controller 70 comprising a microcomputer and its peripheral circuits. A switch 71 for setting the operation and stop of all the indoor units, a switch 72 for setting the operation and stop for each indoor unit, and an LED display unit that is turned on during operation and turned off when stopped for each indoor unit in the centralized remote control unit 70 73, SW74 for setting the indoor temperature for each indoor unit,
Further, a liquid crystal display unit 75 for displaying the set temperature is connected. The central remote controller 70 has four terminals for connection with the indoor unit controller 40.

The outdoor unit Q includes an outdoor unit control section 60 comprising a microcomputer and its peripheral circuits.
It has. The inverter unit 61, the four-way valve 12, the main electric expansion valve 15, and the electric expansion valve 16 are connected to the outdoor unit control unit 60. The outdoor unit control unit 60 has four terminals for connection with the indoor unit control unit 40.

The inverter circuit 61 rectifies the voltage of the AC power supply 62, converts the rectified voltage into an AC voltage having a predetermined frequency in accordance with a command from the outdoor unit control section 60, and supplies the AC voltage to the compressor motor 63 as a drive output.

The control unit 50 of each individual remote controller P
Has the following functional means. (1) Means for transmitting an operation command signal to the indoor unit together with a temperature, air volume, air direction, operation mode (cooling, heating or dry) setting signal set on the remote controller when the operation SW 51 is operated.

(2) Temperature setting SW52, air volume setting SW5
3. Wind direction setting SW 54 and operation mode switching SW 55
Means for displaying the temperature, air volume, wind direction and operation mode on the liquid crystal display unit 56 together with the temperature setting, air volume setting, wind direction and operation mode setting signal to the indoor unit when the (operation of cooling, heating or dry) is operated alone. .

(3) Means for switching the temperature display section 56a, which is a part of the liquid crystal display section 56, between the absolute temperature display and the relative temperature display by operating the switch SW57.

The control unit 70 of the centralized remote controller S has the following functional means. (1) Means for turning on the operation LEDs 73 of all the indoor units on the central remote controller S when operating the all-room operation SW 71 and transmitting the temperature and operation command signals set on the central remote controller S to all the indoor units.

(2) The individual operation LED 7 of the corresponding indoor unit on the central remote controller S when the individual operation SW 72 is operated
Means for turning on 3 and transmitting the temperature and operation command signal set on the central remote controller S to the corresponding indoor unit.

(3) While the operation command signal is transmitted to the indoor unit and the operation LED 73 is turned on, the all-room operation SW 71 is again turned on.
Means for turning off the operation LEDs 73 of all the indoor units during operation and transmitting an operation command signal to all the indoor units.

(4) When the operation command signal is transmitted to the indoor unit and the operation LED 73 is turned on, the individual operation SW 72 is again activated.
When operating, the individual operation LED 7 of the corresponding indoor unit
Means for turning off 3 and transmitting an operation command signal to the corresponding indoor unit.

(5) Means for displaying the temperature changed during the individual operation of the individual temperature setting switch 74 on the liquid crystal display unit 75 of the corresponding indoor unit, and transmitting a temperature setting signal to the corresponding indoor unit.

(6) Means for receiving the operation command signal from the indoor unit and lighting the operation LED 73 of the corresponding indoor unit.

(7) Means for receiving the operation stop signal from the indoor unit and turning off the operation LED 73 of the corresponding indoor unit.

(8) Means for receiving a temperature setting signal from an indoor unit and displaying it on the liquid crystal display unit 75 of the corresponding indoor unit.

Each indoor unit control section 40 has the following functional means. (1) A means for receiving an operation command signal from the operation SW 51 of the individual remote controller P or the all-room operation SW 71 or the individual operation SW 72 of the centralized remote controller S and operating the indoor motor 41 for driving the indoor blower 32.

(2) Upon receiving an operation command signal from the operation switch 51 of the individual remote controller P, the operation command signal is transmitted to the outdoor unit Q.
And means for transmitting to the centralized remote control S.

(3) All-room operation switch 71 of centralized remote controller S
And a means for receiving an operation command signal from the individual operation SW 72 and transmitting the operation command signal to the outdoor unit Q.

(4) Means for transmitting a stop command signal to the outdoor unit Q and the centralized remote controller S when receiving an operation signal from the operation switch 51 of the individual remote controller P again during the operation while receiving the operation command signal.

(5) During operation after receiving the operation command signal, the all-room operation SW 71 and the individual operation SW of the centralized remote controller S are again operated.
Means for transmitting a stop command signal to the outdoor unit Q when receiving an operation command signal from the outdoor unit Q;

(6) Means for receiving the set temperature signal from the individual remote controller P, displaying it on the display section 42, and transmitting the set temperature signal to the centralized remote controller.

(7) Means for receiving the set temperature signal from the centralized remote controller S and displaying it on the display unit 42.

(8) Temperature setting SW5 of individual remote controller P
2. Means for obtaining the difference between the indoor set temperature set by the individual temperature setting SW 74 of the central remote controller S and the detected temperature of the suction temperature sensor 31 as the indoor air conditioning load levels La, Lb, Lc, Ld of the respective indoor units.

There are five indoor air conditioning load levels. The load level L is Δt = (suction temperature-set temperature)

[0058]

[Table 1]

(9) Means for transmitting the indoor air conditioning load level L of the indoor unit to the outdoor unit Q.

(10) Means for transmitting the model capability unique to each indoor unit to the outdoor unit Q as each model capability rank Ra, Rb, Rc, Rd.

There are seven types of model capability rank R (kW).

[0062]

[Table 2]

Further, the outdoor unit control section 60 has the following functional means. (1) The four-way valve 12 is switched and controlled based on an operation signal such as an operation condition from each indoor unit, and an operation frequency H of the compressor is
means for controlling t.

(2) Upon receiving the model capability ranks Ra, Rb, Rc, and Rd from the indoor units A, B, C, and D, the initial opening degrees Eas, Ebs, Ecs, and E of the corresponding electric expansion valves are received.
Means for determining ds.

[0065]

[Table 3]

(3) In response to the load levels La, Lb, Lc, Ld from the indoor units A, B, C, D, the initial opening of the electric expansion valve is set to the transient opening Eac, Ebc, Ec by the following equation.
Means for changing to c, Edc.

Eac = Eas × (La / 4) (4) Model capability ranks Ra, Rb, Rc, Rd from indoor units A, B, C, D and load levels La, Lb, L
The required operating frequencies Ha, Hb, Hc, and Hd of the compressors required by the individual indoor units are obtained from the table below in response to c and Ld, and the values of the required operating frequencies Ht of the compressors required by all the indoor units are obtained. Means to obtain and control from the following formula.

[0068]

[Table 4]

Ht = 0.9 × (Ha + Hb + Hc + Hd) Next, the operation of the above configuration will be described.

As shown in FIG. 3, the temperature display section 56a of the individual remote controller P normally sets an absolute temperature such as "26.degree. C.".
By operating 7, the relative temperature can be set as shown in the "+3" temperature display of FIG.

Here, the temperature display of the individual remote controller P is set relative to the operation mode SW of the individual remote controller P of the indoor units A and B from the state where all the indoor units are stopped.
55 is set to “cooling” and the air volume setting SW53 is set to “weak”
When the operation switch 51 is pressed after setting the indoor unit A,
B receives these signals and displays the initial setting “26 ° C.” on the display unit 42 of the indoor units A and B,
1 and the operation command signal and the temperature setting signal are transmitted to the central remote controller S.

The central remote controller S receives these signals,
The individual operation LEDs 73 for the indoor units A and B are turned on, and “26 ° C.” is displayed on the display unit 75.

The indoor units A and B transmit the operation command signal and the model capability rank R to the outdoor unit Q. The outdoor unit Q receives these signals, the compressor 10 starts operating at the initial operating frequency, the main electric expansion valve 15 opens to a predetermined opening, and the electric expansion valves 16 for the indoor units A and B Opens to the initial opening.

The control unit 40 of each indoor unit detects the indoor air temperature with the suction temperature sensor 31, and determines the indoor air-conditioning load of each of the indoor units A and B based on the difference from the initially set indoor set temperature “26 ° C.”. The levels La and Lb are calculated and transmitted to the outdoor unit Q. In response to these load levels La and Lb, the electric expansion valves 16 for the indoor units in the outdoor unit Q shift from the initial opening to the opening in the transient state. Further, the compressor 10 also receives the model capability rank R and the load level L from the indoor unit, calculates the operating frequency Ht of the compressor required in the outdoor unit Q, and shifts from the initial operating frequency to the operating frequency Ht in the transient state. The electric expansion valve 16 and the compressor 10 change their opening degree and frequency until a stable state is reached.

Next, when the individual temperature setting SW 74 for the indoor unit B of the central remote controller S is pressed and the display section 75 is changed to “28 ° C.”, a temperature setting signal is transmitted to the indoor unit B. The indoor unit B receives the temperature setting signal from the central remote controller S and changes the display unit 42 to “28 ° C.”.

Further, when the temperature setting SW 53 of the individual remote controller P of the indoor unit B is pressed to set “−2”, the indoor unit B changes the temperature display on the display section 42 to “26 ° C.” and concentrates the temperature setting signal. Transmit to remote control S. The centralized remote controller S receives the temperature setting signal from the indoor unit B, and switches the liquid crystal display 75 of the indoor unit B to “26”.
° C ”.

When the operation switch 51 of the individual remote controller P of the indoor unit A is pressed again in this operation state, the indoor unit A in operation stops the operation and transmits an operation stop signal to the outdoor unit Q and the central remote controller S. The centralized remote controller S turns off the individual operation LED 73 in response to the operation stop signal from the indoor unit A.

Next, when the individual operation switch 72 for the indoor unit B of the central remote controller S is pressed, the individual operation LED 73 which is lit is turned on.
Is turned off and an operation command signal is transmitted to the indoor unit B. The indoor unit B in operation receives the operation command signal again, stops the operation, and transmits an operation stop signal to the outdoor unit Q. The outdoor unit Q that has already received the operation stop signal from the indoor unit A becomes the indoor unit B
It stops here in response to the operation stop signal from.

Next, in the same operation stop state, when the all room operation SW 71 of the centralized remote controller S is pressed, all the individual operation LEDs 7
3 is turned on. The indoor units A, B, C, and D all start operating, and display the temperature displayed on the liquid crystal display unit 75 of the central remote controller S on the display unit 42 of the indoor unit. Here, when the all-room operation SW 71 is pressed again, all the individual operation LEDs 73 are turned off, and all the indoor units and the outdoor units Q are stopped.

In the above embodiment, for convenience of explanation, a control circuit is described by connecting a centralized remote controller to a multi air conditioner in which a plurality of indoor units are connected to one outdoor unit. As is clear from the range, a similar effect can be obtained by a control circuit configured by connecting a centralized remote controller to a plurality of single air conditioners.

[0081]

As is clear from the above embodiment, the invention according to claim 1 is an individual wireless remote control device for individually operating and a centralized remote control for operating a plurality of indoor units at one place. One of an indoor set temperature determined by the individual wireless remote control device and an indoor set temperature determined by the centralized remote control device is provided to a control unit of an indoor unit having a control circuit connected to an operating device. The display means for displaying the preferential indoor set temperature is provided.

When the indoor temperature is set from the individual wireless remote control device side, the indoor unit receives the set temperature signal, displays the set temperature on the display unit connected to the control unit of the indoor unit, and performs the centralized remote operation connected by wire. Send a signal to the device and display the set temperature on the centralized remote control.

Next, when the set temperature is changed from the centralized remote controller, the indoor unit receives the changed set temperature signal and displays the changed set temperature on the display of the indoor unit. In each room, it is possible to confirm whether the temperature is set to such a temperature, and the set temperature can be confirmed, and the set temperature can be further changed from the individual wireless remote control device with ease.

As a result, it is possible to add the room temperature setting function to the centralized remote control device at a low cost without changing the individual remote control device to a wired specification that is inconvenient to use and without changing to an expensive communication method. .

According to a second aspect of the present invention, the method of setting the room temperature in the control unit of the individual wireless remote controller is set to an absolute setting for directly transmitting a desired temperature or a relative setting for transmitting a plus or minus deviation. Switching means for switching between the two.

By implementing the contents of the first aspect, the current set temperature can be confirmed on the display unit of the indoor unit without confirming the centralized remote control device. There is no problem changing the temperature setting, but the set temperature display on the individual wireless remote control device
If it is an absolute setting to set the desired temperature, it will be different from the temperature display on the indoor unit display, and there is a sense of incompatibility, so plus or minus deviation, for example, ± 1K setting, ± 4K maximum change If it is made possible, the operation will not be uncomfortable.

Further, when the centralized remote control device is not connected, since it can be used by setting it as an absolute setting, there is an advantage that it can be shared and it can be implemented at low cost.

The invention according to claim 3 is a room in which an upper limit value and a lower limit value are set for the indoor set temperature determined by the individual wireless remote control device or the centralized remote control device which is absolutely set.

Both the individual wireless remote control device and the centralized remote control device which have been absolutely set usually have the same temperature setting range. For example, the minimum set temperature is 16 ° C. and the maximum set temperature is 30 ° C. Assuming that the maximum deviation in the relative setting is ± 4K, if the centralized remote control device is set to 28 ° C., then if the set temperature is changed to the maximum value on the plus side, ie, + 4K by the individual wireless remote control device, the temperature will be 32 ° C.
Will be set to

When the temperature is set to 18 ° C. by the centralized remote control device, and then the set temperature is changed to the maximum value on the negative side, that is, −4 K by the individual wireless remote control device, the temperature is set to 14 ° C.
° C. Therefore, 30 ° C. and 16 ° C. are set as the upper limit and the lower limit, respectively, and the change of the setting exceeding the upper limit and the lower limit are cancelled.

According to a fourth aspect of the present invention, when the operation is started with the individual wireless remote control device set to the relative setting, the operation is started at a predetermined initial set temperature.

Even if the centralized remote control device is connected, it does not always operate from the centralized remote control device.
Of course, the operation may be started from the individual wireless remote control device. In this case, the operation is started at a predetermined initial set temperature, and there is no contradiction in the set temperature.

According to a fifth aspect of the present invention, the initial set temperature has different values when the cooling operation is set and when the heating operation is set, and the initial set temperature when the cooling operation is set is the upper limit of the indoor set temperature. Value-maximum deviation ", and the initial set temperature at the time of heating operation setting is" lower limit value of indoor set temperature + maximum deviation ".

If the set temperature range is between 16 ° C. and 30 ° C. and the deviation in relative setting is ± 4 K, the cooling time is 30 ° C.
Since the initial setting temperature is set to 26 ° C. at 4 ° C. and 20 ° C. at 16 ° C. + 4 K at the time of heating, the operation can generally be started at an appropriate temperature.

Since the above-described effects are obtained, the operation control device of the air conditioner is inexpensive without losing the convenience of the wireless system and can set the temperature of each indoor unit from the centralized remote control device. Can be provided.

[Brief description of the drawings]

FIG. 1 is a refrigeration circuit diagram of an air conditioner according to one embodiment of the present invention.

FIG. 2 is a functional block diagram showing a configuration of a control circuit of the air conditioner showing the same embodiment.

FIG. 3 is a detailed view of the individual wireless remote control device of the same embodiment.

FIG. 4 is a detailed view of a display unit when a temperature display switching switch of the individual wireless operation device of the same embodiment is set to a relative setting.

FIG. 5 is a detailed view of the centralized remote control device of the same embodiment.

FIG. 6 is a configuration diagram of a conventional multi-room air conditioner.

[Explanation of symbols]

 A, B, C, D Indoor unit P Individual remote controller S Centralized remote controller Q Outdoor unit 40 Indoor unit control unit 42 Indoor unit temperature display unit 50 Individual remote control unit 56 Individual remote control display unit 57 Temperature display switching SW 60 Outdoor unit control unit 70 Centralized remote control controller 74 Individual temperature setting SW 75 Centralized remote controller temperature display

Claims (5)

[Claims] 1. A centralized remote control device which can collectively operate these indoor units from a remote place is connected to a plurality of indoor units, and at least one of the indoor units can be individually operated wirelessly. In the operation control device including the individual wireless remote control device, the control unit of the indoor unit determines the indoor set temperature determined by the individual wireless remote control device and the centralized remote control device. An operation control device for an air conditioner, further comprising a display unit for displaying one of the indoor set temperatures having a higher priority. 2. The control unit of the individual wireless remote control device includes switching means for switching the setting method of the room temperature between an absolute setting for directly transmitting a desired temperature and a relative setting for transmitting a plus or minus deviation. The operation control device for an air conditioner according to claim 1, wherein the operation control device is provided. 3. The air conditioner according to claim 2, wherein an upper limit value and a lower limit value are set for the indoor set temperature determined by the individual wireless remote control device or the centralized remote control device set as the absolute value. Operation control device. 4. The air conditioner according to claim 2, wherein when the operation is started with the individual wireless remote control device set to the relative setting, the operation is started at a predetermined initial set temperature. Operation control device. 5. The initial setting temperature has different values when the cooling operation is set and when the heating operation is set, and the initial setting temperature when the cooling operation is set is “upper limit of indoor setting temperature−maximum deviation”.
The operation control device for an air conditioner according to claim 4, wherein the initial set temperature when the heating operation is set is "lower limit value of indoor set temperature + maximum deviation".