JP2001235213A - Air-conditioning system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To operate an up-and-down movement of a suction grille in a plurality of indoor units. SOLUTION: In an air-conditioning system, a group control is made possible, in which operations of a plurality of indoor units 66, 68, and 70 are controlled all together substantially by only one remote controller 71A, 71B or 72. Each indoor unit is provided with an up-and-down movable suction grille 8. The grilles of respective indoor units are constituted so that they can be operated simultaneously all together, or separately.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning system having a plurality of indoor units each having a vertically movable suction grill.

[0002]

2. Description of the Related Art As an air conditioner, there is known an in-ceiling type air conditioner in which a decorative panel of an indoor unit attached to an opening of a ceiling is provided with a suction grill, and a filter is provided on the suction grill. By removing and cleaning the filter provided on the suction grill, the performance of the air conditioner can be sufficiently exhibited.

[0003] Further, there is also known an embedded ceiling type air conditioner in which an elevating device for raising and lowering the suction grill is installed on the decorative panel in order to lower the suction grill housed in the decorative panel of the indoor unit from the ceiling to the work place. ing. In this elevating device, an elevating motor for driving the drum to rotate forward or backward is installed on the decorative panel, and a suspension string having one end attached to the suction grill is wound around the drum, and the rotation of the drum raises and lowers the suction grill. It is to let.

By the way, in an air conditioning system,
One or a plurality of air conditioners having one or a plurality of outdoor units and a plurality of indoor units are controlled by one central control device, and furthermore, a plurality of indoor units are controlled by one remote controller. Simultaneous operation control (group control)
Some are configured to be possible.

[0005] In such an air conditioning system, there is a type in which the suction grill of the indoor unit can be moved up and down as described above in order to facilitate cleaning of the filter of the indoor unit. In this case, in the indoor unit capable of lifting and lowering the suction grill, a remote controller dedicated to lifting and lowering the suction grill is provided for each indoor unit, separately from the remote controller for controlling the group, and using this remote controller The lifting and lowering of the suction grill is performed individually for each indoor unit.

[0006]

However, in the above-described air conditioning system, in addition to the remote controller for group control for simultaneously controlling the operation of a plurality of indoor units, only the lifting and lowering of the suction grill is performed. Since a dedicated remote controller for raising and lowering the suction grill is required for each indoor unit, the operation of raising and lowering the suction grill becomes complicated, and the number of remote controllers also increases.

For this reason, the output of the transmission wave of the remote controller is reduced, the sensitivity (detection angle or range) of the light receiving section of the indoor unit is reduced, and unless the remote controller is operated almost directly below the indoor unit, the indoor unit cannot operate. In some cases, a signal from a remote controller is not accepted, so that the remote controller can be commonly used for each indoor unit. However, since the output of the transmission wave of the remote controller is reduced and the sensitivity of the light receiving unit is reduced, the operability cannot be denied.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an air-conditioning system capable of easily performing a lifting operation of a suction grill in a plurality of indoor units.

[0009]

According to the first aspect of the present invention, it is possible to perform group control for simultaneously controlling the operation of a plurality of indoor units by substantially using one remote controller, and to perform the group control. In the air conditioning system including a suction grille capable of moving the unit up and down, the suction grills of the indoor units can be moved up and down simultaneously or individually by operating substantially one remote controller. It is characterized by the following.

[0010] According to a second aspect of the present invention, in the first aspect of the present invention, the indoor unit to which the same group control is performed is characterized in that at least one of the indoor units belonging to the group control has a suction grill that moves up and down. When operated, the operation other than the lifting / lowering operation of the suction grill is stopped.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the indoor unit to which the same group control is performed is a suction grill of at least one of the indoor units belonging to the group control. When the lift operation is performed, even when an operation command is transmitted from a central control device that centrally controls the operation of the plurality of indoor units, the operation other than the lift operation of the suction grill is stopped. It is characterized by the following.

The invention described in claim 4 is the first to third aspects of the present invention.
In the invention according to any one of the above, at least one of the indoor units belonging to the group control is operated by operating one of the parent remote controller and the child remote controller to cause the indoor units belonging to the same group control to execute the same function. When the suction grille of the unit is moved up and down, an operation command is not transmitted by one of the parent remote controller and the child remote controller, and the indoor unit belonging to the group control is provided with the suction grille. An operation other than the lifting operation is stopped.

[0013] The invention according to claim 5 is the invention according to claims 1 to 4.
In the invention according to any one of the above, the remote controller is configured to immediately stop the elevating operation of the suction grill by operating one of the operation buttons during the elevating operation of the suction grill of the indoor unit. It is characterized by having been done.

[0014] The invention according to claim 6 is the invention according to claims 1 to 5.
In the invention according to any one of the above, the remote controller stops a lifting operation of the suction grill of the indoor unit by operating a specific operation button during a lifting operation of the suction grill of the indoor unit. An operation other than the operation of lifting and lowering the suction grill in the indoor unit is performed.

The first aspect of the invention has the following operation.

[0016] Since the suction grilles of the indoor units can be moved up and down simultaneously or individually by operating one remote controller that enables group control, they are mounted on the suction grille. Also when raising and lowering the suction grill of the indoor unit that needs to replace the filter,
Since it is sufficient to use substantially one remote controller described above and does not need another remote controller,
The lifting operation of the suction grills in the plurality of indoor units can be easily performed.

Further, since it is not necessary to provide a remote controller for raising and lowering the suction grill for each indoor unit, the number of remote controllers can be reduced.

The invention according to claims 2 to 4 has the following effects.

An indoor unit in which the same group control is performed includes:
When the suction grill of at least one indoor unit belonging to the group control is moved up and down, since the operation other than the lifting and lowering operation of the suction grill is configured to be stopped,
When the suction grill is moved up and down, it is possible to reliably prevent the danger of the user's hand or the like getting caught in the indoor unit.

[0020] The invention described in claim 5 has the following operation.

The remote controller is configured to immediately stop the lifting operation of the suction grill by operating any one of the operation buttons during the lifting operation of the suction grill of the indoor unit. Can be stopped by operating any one of the operation buttons instead of the operation of a specific operation button, so that it is possible to quickly avoid the occurrence of a problem associated with the operation of lifting and lowering the suction grill.

The invention according to claim 6 has the following operation.

The remote controller, when a specific operation button is operated during the elevating operation of the suction grill of the indoor unit, stops the elevating operation of the suction grill of the indoor unit, and stops the suction operation of the indoor unit. Since it was configured to be able to perform operations other than the raising and lowering operation of the grill, the operation status of the indoor unit was controlled by operating the indoor unit with the suction grill lowered during test operation or maintenance of the air conditioning system. Can be accurately determined.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a system diagram showing an embodiment of an air conditioning system according to the present invention.

The air conditioning system 60 shown in FIG.
A plurality of, for example, three, first, second and third air conditioners 61, 62 and 63 are centrally controlled by a centralized control device 64, and the first air conditioner 61 is also controlled.
(For example, three) indoor units 66 and a plurality (for example, three) indoor units 68 of the second air conditioner 62 can be group-controlled by the remote controller 71A or 71B. A plurality (for example, three) of indoor units 70 of the harmony devices 63 are configured to be group-controllable by the remote controller 72.

Here, the group control is substantially performed by one remote controller (that is, one remote controller or a remote controller configured by a combination of a parent remote controller and a child remote controller described later). This refers to a control mode in which a plurality of indoor units are simultaneously operated (including start and stop) in a similar manner.

The first air conditioner 61 includes one or more (for example, one) outdoor units 65 and three indoor units 66.
Are connected by a refrigerant pipe 73. The second air conditioner 62 is configured by connecting one or more (for example, three) outdoor units 67 and three indoor units 68 by a refrigerant pipe 74. Further, the third air conditioner 63 is configured such that an outdoor unit 69 and three indoor units 70 are connected by a refrigerant pipe 75.

The central control unit 64 is sequentially connected to outdoor units 69, 67, 65 and three indoor units 66, 68, and 70, respectively, using a two-wire communication line 76, and performs the same group control. For each indoor unit to which it belongs, the outdoor units 65, 6
7, 69, and the indoor units 66, 68 and 70 are centrally controlled.
That is, the centralized control device 64 simultaneously controls the operation of the outdoor unit 65 and the indoor unit 66 of the first air conditioner 61 and the outdoor unit 67 and the outdoor unit 65 of the second air conditioner 62 in which the same group control is performed. The centralized control is similarly performed, and the operations of the outdoor units 69 and 70 of the third air conditioner 63, which are subjected to the other same group control, are similarly centrally controlled.

The remote controller 71A or 71
B uses a communication line 77 to connect three indoor units 66 respectively.
And 68, a so-called wired remote controller.
On both sides of the communication line 77, remote controllers 71A and 7
1B are connected to each other. A total of six indoor units 66 and 68 are group-controlled by the remote controller 71A or 71B. That is, by the operation of either one of the remote controllers 71A and 71B, all the six indoor units 66 and 68 perform normal operations (including start and stop) other than the up-and-down operation of the suction grill 8 described later,
It is controlled so as to be performed all at once.

These remote controllers 71A and 7A
1B, one is a parent remote controller and the other is a child remote controller. The child remote controller performs substantially the same function as the parent remote controller with respect to the operation control of the six indoor units 66 and 68 in total.

The remote controller 72 is a so-called wired remote controller connected to three indoor units 70 using a communication line 78. The three indoor units 70 are group-controlled by the remote controller 72. That is, by the operation of the remote controller 72, all the three indoor units 70 perform the normal operations (including start-up and stop) other than the up-and-down operation of the suction grill 8 described later simultaneously and similarly. Controlled.

These remote controllers 71A, 7A
1B and 72 include a display unit 79 and various operation buttons as shown in FIG. For example, by operating the start / stop button 80 of the remote controller 71A or 71B, all the first air conditioners 61 and the second air conditioners 62 are simultaneously activated or stopped. The operation of the operation switching button 81 of the remote controller 71A or 71B causes the first air conditioner 61 and the second air conditioner 6 to operate.
Operation modes, such as cooling and heating, are simultaneously switched. By operating the set temperature increase button 82 and the set temperature decrease button 83 of the remote controller 71A or 71B, the set temperatures of the indoor units 66 and 68 are simultaneously increased or decreased. Further, by operating the unit selection button 84 of the remote controller 71A or 71B, the indoor units 66 and 68 are selected using the address code, that is, the unit number (No), and the swing wind direction button 85 of the remote controller 71A or 71B is selected.
By the operation of the indoor units 66 and 6 selected as described above,
8, the flap (not shown) angle is adjusted to control the wind direction.

On the other hand, operation of the remote controller 72
By operating the stop button 80, the operation switching button 81, the set temperature increase button 82, the set temperature decrease button 83, the unit selection button 84, and the swing wind direction button 85, as in the case of the remote controller 71A or 71B,
The functions of each operation button are all the third air conditioner 63
Will be implemented.

The address codes of the indoor unit 66 are "1-1" and "1-
2, and the address code of the indoor unit 68 is "2-1", "2-2", "2-
3 ", and the address codes of the indoor unit 70 are" 3-1 "," 3-2 ", and" 3-3 "sequentially from the left side of FIG.

The remote controller 71A or 7
The operating state of the first air conditioner 61 and the second air conditioner 62 and the like are displayed on the display unit 79 of 1B. Further, the operating state of the third air conditioner 63 and the like are displayed on the display unit 79 of the remote controller 72.

Incidentally, the indoor units 66, 68 and 7 described above
0 is provided with a suction grill 8 configured as shown in FIG. 2 and movable up and down as shown in FIG.

That is, as shown in FIG. 2, the indoor units 66, 68, and 70 have a unit body 2 made of sheet metal housed in the ceiling, an air inlet 3 in the center, and air blowouts on the four sides of the outer periphery. The decorative panel 7 has an outlet 4 and is provided on a ceiling surface 6 so as to cover the ceiling hole 5, and a suction grill 8 attached to cover the air inlet 3 of the decorative panel 7.

The unit main body 2 houses a blower 11, a nozzle port 15, a heat exchanger 21, a drain pan 16, and the like.

The blower 11 includes a fan motor 14 mounted on a top plate 13 and a turbo fan 12. The nozzle port 15 guides room air from the air suction port 3 to the darbo fan 12. The drain pan 16 has an inner rising portion 17 and an outer rising portion 18, and is formed of styrene foam in a square ring shape. The heat exchanger 21 is a plate-fin heat exchanger that is annularly disposed on the discharge side of the turbo fan 12 so as to surround the fan.

Reference numeral 22 in FIG. 1 denotes a heat insulating material wound around the peripheral surface of the unit body 2, and reference numeral 23 denotes a guide for guiding the air exchanged by the heat exchanger to the air outlet 4. A wind portion, and reference numeral 24 is a suspension bolt for suspending the unit main body 2 on a ceiling beam with a suspension tool.

The suction grille 8 has an intake port 9 formed by a number of bars, and a filter 25 is detachably mounted thereon.

As shown in FIGS. 3 to 5, panel guides 26 and 27, and 28 and 29 are attached to two opposing sides inside the decorative panel 7 provided on the ceiling surface 6, respectively. Suspension cords 35, 36, 37, and 38 are wound around these panel guides and guides (hereinafter, referred to as grill pulleys) 31, 32, 33, and 34 provided on two sides of the suction grill 8, respectively. The suction grille 8 is supported by the decorative panel 7 by these four suspension strings 35, 36, 37, 38. These four hanging strings 35, 36,
For the wires 37 and 38, a resin wire or a metal wire having an outer periphery coated with vinyl is used.

As shown in FIG. 4, the hanging straps 35, 36, 3
A drive system 56 for raising and lowering the suction grill 8 via the members 7 and 38 is collectively disposed on a support plate 58 extending into the opening 57 of the unit body 2. This drive system is 5
6 is a lifting motor 53, gears 54 and 55, and a shaft 4
0, a clutch 46 and the like.

In FIG. 5, a first drum 41, a second drum 42, and a third drum 43 are fixed to a shaft 40, a fourth drum 44 is rotatably disposed, and a fixing portion 45 is fixed. It is provided. A pair of such a first drum 41 and a second drum 42 and a third
Another pair of the drum 43 and the fourth drum 44 is provided at each end of the shaft 40.
A clutch 48 including a coil spring 46 and a clutch plate 47 is interposed between the fixing portion 45 and the fourth drum 44. The clutch 48 presses the clutch plate 47 against the side surface of the fourth drum 44 by the spring force of the coil spring 46, and reduces the rotational force of the shaft 40 by the frictional force between the clutch plate 47 and the side surface of the fourth drum 44. Drum 4
4 The ends of the hanging strings 35, 36, 37, 38 are fixed to the drums 41, 42, 43, 44, respectively.
With the rotation of the shaft 40, the hanging strings 35, 36, 37,
38 is unwound or wound up.

The suspending strings 35 and 36 having one ends fixed to the first drum 41 and the second drum 42 are respectively connected to the panel guide 2.
After passing through 6 and 27, it is extended over grill pulleys 31 and 32. The other ends of these hanging strings 35 and 36 are connected via metal fittings 49. The third drum 43 and the fourth drum 4
The suspension strings 37, 38, one end of which is fixed to 4, are passed over grill pulleys 33, 34 via panel guides 28, 29, respectively, and the other ends thereof are connected via metal fittings 50, respectively.

When the elevating motor 53 of the drive system 56 rotates forward, the drums 41, 42, 43, 4
4 rotates in the direction in which the suspending cords 35, 36, 37, 38 are extended, whereby the suction grill 8 is lowered. The lowered suction grille 8 causes the drums 41, 42, 43, and 44 together with the shaft 40 by the rotation of the lifting / lowering motor 53 to rotate.
5, 36, 37, and 38 are raised by rotating in the winding direction. In addition, each of the grill pulleys 31, 32, 3
A slight resistance is provided between 3, 3 and each of the hanging straps 34, 35, 36, 37 so as to prevent the suction grill 8 from being carelessly inclined. When the suction grill 8 is stopped in the lowered state, the filter 25 is removed from the suction grill 8, and can be replaced with a cleaned or new filter 25.

The remote controller 71A or 71B simultaneously operates the suction grills 8 of the six indoor units 66 and 68 at the same time, or suctions the selected indoor unit among the six indoor units 66 and 68. The grills 8 are configured to be individually movable up and down. In addition, the remote controller 72 allows the suction grilles 8 of the total of three indoor units 70 to be moved up or down simultaneously, or the suction grilles 8 of the indoor unit selected from the total of three indoor units 70 can be individually raised and lowered. It is configured as follows.

When all of the indoor units 66 and 68 in which the same group control is performed, the suction grills 8 of the indoor units 66 and 68 are simultaneously moved up or down individually by operating the remote controller 71A or 71B. A normal operation (including start-up and stop) other than the lifting / lowering operation of the grill 8 is forcibly stopped.

Similarly, all the other indoor units 70 that are subjected to the same group control are provided with the suction grills 8 of the indoor units 70.
However, the normal operation (including start and stop) other than the elevating operation of the suction grill 8 is forcibly stopped when the elevating operation is performed simultaneously or individually by operating the remote controller 72.

Further, in all the indoor units 66 and 68 in which the same group control is performed, the suction grills 8 of the indoor units 66 and 68 are moved up and down simultaneously or individually by operating the remote controller 71A or 71B. Sometimes
Even if the operation is started (erroneously) by the transmission of the operation command from the central control device 64, the normal operation (including start and stop) other than the elevating operation of the suction grill 8 is forcibly stopped. Be composed.

Similarly, all the other indoor units 70 under the same group control are operated when the suction grilles 8 of the indoor units 70 are moved up and down simultaneously or individually by operating the remote controller 72. , Centralized control device 64
The normal operation (including start and stop) other than the elevating operation of the suction grill 8 is forcibly stopped even if the operation is started (erroneously operated) by the transmission of the operation command from.

Further, the remote controller 71A or 7A
1B, for example, the remote controller 71
By the operation of A, the suction grills 8 of the indoor units 66 and 68 are
Are operated simultaneously or individually, for example, by operating the remote controller 71B.
It is configured so that the operation command is not transmitted to 6, 68. Therefore, all the indoor units 66 for which the same group control is performed
And 68, when the suction grilles 8 of the indoor units 66 and 68 are simultaneously moved up or down individually by operating one of the remote controllers 71A and 71B, for example, the other operation of the remote controllers 71A and 71B , The normal operation (including start-up and stop) other than the lifting / lowering operation of the suction grill 8 is not performed.

Next, the remote controllers 71A, 71
The control of the raising / lowering operation of the suction grill 8 in the indoor units 66, 68, 70 implemented using B, 72 will be described with reference to FIG.

The remote controller 71A or 71
B operates the filter up / down button 86 so that the display unit 79 blinks “filter up / down”, and the indoor units 66 and 6
A signal for stopping the normal operation of the suction grille 8 other than the elevating operation is transmitted to the suction grille 8.

When there is no vertically movable suction grille 8 in the indoor units 66 and 68, the remote controller 71
A and 71B display "This function is not available" on the display unit 79 when the filter raising / lowering button 86 is operated.

Similarly, when the filter raising / lowering button 86 is operated, the remote controller 72 blinks “filter raising / lowering” on the display unit 79 and instructs the indoor unit 70 to perform normal operation other than raising / lowering operation of the suction grill 8. Send the signal to stop.

When the vertically movable suction grille 8 does not exist in the indoor unit 70, the remote controller 72 displays "this function is not available" on the display unit 79 when the filter raising / lowering button 86 is operated.

Next, when the unit selection button 84 is operated, the remote controller 71A or 71B
The address codes of the indoor units 66 and 68 selected by the operation are displayed on the display unit 79. Each time the unit selection button 84 is pressed, the address code is set to “1-1”, “1-2”, “1-3”, “2-1”,
"2-2", "2-3", and "ALL" are sequentially displayed.

The remote controllers 71A and 71B
The indoor units 66 and 68 having the address code displayed on the display unit 79 are determined as the control targets of the elevation control of the suction grill 8. The address code "ALL" is displayed on the display section 79.
Is displayed on the remote controller 71A, 7
1B determines all the indoor units 66 and 68 with the address codes “1-1” to “2-3” as the control targets of the elevation control of the suction grill 8.

Similarly, when the unit selection button 84 is operated, the remote controller 72 displays the address code of the indoor unit 70 selected by the operation on the display unit 79.
To be displayed. Each time the unit selection button 84 is pressed, the address code is set to “3-1”, “3-2”,
"3-3" and "ALL" are sequentially displayed. The remote controller 72 determines the indoor unit 70 having the address code displayed on the display unit 79 as a control target of the elevation control of the intake grill 8. Address code "A
When “LL” is displayed on the display unit 79, the remote controller 72 sets the address codes “3-1” to “3-
All the indoor units 70 up to “3” are determined as the control targets of the elevation control of the suction grill 8.

Next, when the set temperature lowering button 83 is operated, the remote controller 71A or 71B operates.
A signal for lowering the suction grill 8 of the indoor unit is transmitted to the indoor units 66, 68 or all the indoor units 66 and 68 selected by the address code. Thereby, the suction grill 8 of the indoor unit is lowered to the set position.

Similarly, when the set temperature lowering button 83 is selected, the remote controller 72 sends to the indoor unit 70 selected by the address code or all the indoor units 70.
A signal for lowering the suction grill 8 of the indoor unit is transmitted. Thereby, the suction grill 8 of the indoor unit is lowered to the set position.

Next, when the set temperature increase button 82 is operated, the remote controller 71A or 71B
A signal for raising the suction grill 8 of the indoor unit 66 or 68 is transmitted to the indoor units 66 and 68 or all the indoor units 66 and 68 selected by the address code. As a result, the suction grill 8 of the indoor unit is raised until it is securely stored in the decorative panel 7.

Similarly, when the set temperature increase button 82 is operated, the remote controller 72 sends the signal to the indoor unit 70 selected by the address code or all the indoor units 70.
A signal for raising the suction grill 8 of the indoor unit is transmitted. As a result, the suction grill 8 of the indoor unit is raised until it is securely stored in the decorative panel 7.

The remote controller 71A or 71
B indicates that when any one of the operation buttons (for example, the start / stop button 80) except the filter raising / lowering button 86 is operated during the operation of raising or lowering the suction grill 8, the suction grill 8 is operated.
Is transmitted to the indoor units 66 and 68 in which the suction grill 8 is in the middle of the elevating operation. As a result, the elevating operation of the suction grill 8 is immediately stopped.

Similarly, when any one of the operation buttons (for example, the run / stop button 80) except the filter raising / lowering button 86 is operated during the raising or lowering operation of the suction grill 8, the remote controller 72 operates the suction grill. A signal for stopping the lifting operation of the suction grill 8 is transmitted to the indoor unit 70 in which the suction grill 8 is in the middle of the lifting operation. Thereby, the suction grill 8
Is immediately stopped.

After the above procedure, the filter lifting button 8
6 is operated, the remote controller 71A or 7
1B cancels the lifting / lowering operation control of the suction grill 8, and returns to the control mode in which the indoor units 66 and 68 execute the normal operation other than the lifting / lowering operation of the suction grill 8.

Similarly, when the filter up / down button 86 is operated after the above procedure, the remote controller 72 is operated.
Releases the control of the elevating operation of the suction grill 8, and returns to the control mode in which the indoor unit 70 executes the normal operation other than the elevating operation of the suction grill 8.

However, when the filter raising / lowering button 86 is operated during the lifting / lowering operation of the suction grill 8, the remote controller 71A or 71B immediately stops the lifting / lowering operation of the suction grill 8, and controls the lifting / lowering operation of the suction grill 8. Then, the control mode is switched to the control mode in which the indoor units 66 and 68 perform the normal operation other than the lifting / lowering operation of the suction grill 8.

Similarly, when the filter raising / lowering button 86 is operated during the lifting / lowering operation of the suction grill 8, the remote controller 72 immediately stops the lifting / lowering operation of the suction grill 8 and releases the lifting / lowering operation control of the suction grill 8. Then, the control mode is switched to the control mode in which the indoor unit 70 executes the normal operation other than the elevating operation of the suction grill 8.

According to the above embodiment, the following advantages (1) to (5) can be obtained.

(1) Substantially one remote controller 71A, 71B, 72 enabling group control
, The suction grills 8 of the indoor units 66, 68, and 70 are configured to be able to move up and down simultaneously or individually.
When raising and lowering the suction grills 8 of the indoor units 66, 68, and 70 that require replacement of a filter (not shown) mounted on the suction grill 8, the substantially same remote controllers 71A, 71B, and 72 described above are used. Is used, and no other remote controller dedicated to lifting and lowering the suction grill is required, so that the lifting operation of the suction grill 8 in the plurality of indoor units 66, 68, 70 can be easily performed.

(2) It is not necessary to provide a remote controller dedicated to raising and lowering the suction grill 8 only for raising and lowering the suction grill 8 for each of the indoor units 66, 68 and 70, so that the number of remote controllers can be reduced.

(3) The indoor units 66, 68, and 70 that are subjected to the same group control operate when the suction grill 8 of at least one of the indoor units 66, 68, and 70 belonging to the group control is moved up and down. Since the normal operation other than the raising / lowering operation of the grill 8 is configured to be stopped, the user's hand or the like may move the indoor units 66, 68,
The danger of being caught in the turbo fan 12 inside 70 can be reliably prevented.

(4) Remote Controllers 71A and 71
B, 72 is one of the operation buttons (for example, operation / operation) during the elevating operation of the suction grill 8 of the indoor units 66, 68, 70.
By operating the stop button 80), the elevating operation of the suction grill 8 is immediately stopped. Therefore, the stopping of the elevating operation of the suction grill 8 is not performed by operating a specific operation button, but by any one of the operation buttons. Since the operation can be performed by operating the operation button, it is possible to quickly avoid the occurrence of troubles due to the elevating operation of the suction grill 8.

(5) Remote Controllers 71A and 71
B and 72 stop the elevating operation of the suction grills 8 of the indoor units 66, 68 and 70 by operating the filter elevating button 86 during the elevating operation of the suction grills 8 of the indoor units 66, 68 and 70. At the same time, the air conditioner 60 is configured to be able to execute a normal operation other than the raising / lowering operation of the suction grill 8 in the indoor units 66, 68, 70.
During the test operation and maintenance of, the indoor units 66, 68, and 70 are normally operated with the suction grille 8 lowered, so that the operating conditions of the indoor units 66, 68, and 70 can be accurately determined.

Although the present invention has been described based on the above embodiment, the present invention is not limited to this.

[0079]

As described above, according to the air conditioning system of the present invention, the suction of each of the indoor units can be performed by operating substantially one remote controller that enables group control of a plurality of indoor units. Since the grills are configured to be able to move up and down simultaneously or individually, it is possible to easily carry out the operation of moving up and down the suction grills in a plurality of indoor units.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of an air conditioning system according to the present invention.

FIG. 2 is a longitudinal sectional view showing the indoor unit of FIG.

FIG. 3 is a perspective view showing a state where a suction grill is lowered in the indoor unit of FIG. 2;

FIG. 4 is a view showing the indoor unit of FIG. 2 in which the suction grill is omitted and viewed from below.

FIG. 5 is a perspective view showing a suction grill and a drive system of the indoor unit of FIG. 2;

FIG. 6 is a front view showing the remote controller of FIG. 1;

FIG. 7 is a front view showing the remote controller of FIG. 6 when the suction grill is being lowered.

[Explanation of symbols]

 Reference Signs List 8 suction grille 60 air conditioning system 64 central control device 66 indoor unit 68 indoor unit 70 indoor unit 71A, 71B remote controller 72 remote controller 80 start / stop button 86 filter up / down button (specific operation button)

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Atsushi Niisato 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. (Reference) 3L051 BG06 BJ10 3L060 AA01 CC19 DD08 EE05 3L061 BB01

Claims (6)

[Claims] An air conditioning system comprising a suction grille capable of performing group control for substantially simultaneously controlling the operation of a plurality of indoor units by using a single remote controller, wherein each of the indoor units can move up and down. The air conditioning system according to claim 1, wherein the suction grills of the indoor units can be moved up and down simultaneously or individually by operating substantially one remote controller. 2. The indoor unit which performs the same group control, when the suction grill of at least one indoor unit belonging to the group control is moved up and down, the operation other than the lifting and lowering operation of the suction grill is stopped. The air conditioning system according to claim 1, wherein the air conditioning system is configured to perform the following. 3. The indoor unit, which performs the same group control, centrally controls the operation of a plurality of the indoor units when at least one of the indoor units belonging to the group control is operated to move up and down. The air conditioning system according to claim 1, wherein even when an operation command is transmitted from the centralized control device, operations other than the lifting and lowering operation of the suction grill are stopped. 4. An intake grill of at least one of the indoor units belonging to the group control by operating one of the parent remote controller and the child remote controller to cause the indoor units belonging to the same group control to execute the same function. When the ascending and descending operation is performed, an operation command is not transmitted by one of the parent remote controller and the child remote controller. The air conditioning system according to any one of claims 1 to 3, wherein the operation is stopped. 5. The remote controller according to claim 1, wherein one of the operation buttons is operated during the elevating operation of the suction grill of the indoor unit, so that the elevating operation of the suction grill is immediately stopped. The air conditioning system according to any one of claims 1 to 4, wherein: 6. The remote controller according to claim 1, wherein a specific operation button is operated during a raising / lowering operation of the suction grill of the indoor unit, thereby stopping the raising / lowering operation of the suction grill of the indoor unit. The air conditioning system according to any one of claims 1 to 5, wherein an operation other than the operation of lifting and lowering the suction grill in (1) is performed.