JP3036520B2 - Multi-type air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a multi-type air conditioner having an outdoor unit and a plurality of indoor units.

[0002]

2. Description of the Related Art Conventionally, a multi-type air conditioner includes an outdoor unit, a plurality of indoor units connected to the outdoor unit, respectively.
Some include the outdoor unit and a control device that controls the plurality of indoor units. The multi-type air conditioner operates in each of the rooms where the plurality of indoor units are installed, respectively.
If a priority room that prioritizes (cooling, heating, etc.) is not selected, the indoor unit in each room operates in the operation mode that was operating up to that time, whereas any of the indoor units When one of the priority rooms is selected, a priority room selection function is provided in which the other indoor units also operate in the operation mode of the indoor unit selected as the priority room.

[0003]

By the way, in the multi-type air conditioner, when the air conditioning capacity of the indoor unit selected as the priority room is increased, the air volume of the blowout of the indoor unit is increased and the compressor of the outdoor unit is increased. Increase the operating frequency. At this time, when the other indoor unit is operating, the capacity of the other room is also increased. There is a problem that does not rise.

Accordingly, an object of the present invention is to provide a multi-type air conditioner which can surely increase the air conditioning capacity of an indoor unit in a priority room even when an indoor unit in another room other than the priority room is in operation. Is to do.

[0005]

According to a first aspect of the present invention, there is provided a multi-type air conditioner comprising: an outdoor unit having a compressor; a plurality of indoor units respectively connected to the outdoor unit; In a multi-type air conditioner including an outdoor unit and a control device that controls the plurality of indoor units, the control device includes an indoor unit selection unit that selects any one of the plurality of indoor units. An operation mode setting unit that sets the same operation mode as the operation mode of the indoor unit selected by the indoor unit selection unit to another indoor unit, and increases the air conditioning capacity of the indoor unit selected by the indoor unit selection unit Based on the directive,
An air-conditioning capacity control unit that raises the air flow rate of the indoor unit selected by the indoor unit selection unit and increases the operating frequency of the compressor of the outdoor unit, and a blow-out of the indoor unit that is preferentially selected by the air-conditioning capacity control unit When the air volume and the operating frequency of the compressor of the outdoor unit are increased, a set temperature changing unit that changes a set temperature of the thermo-off so that the other indoor unit is easily thermo-offed is provided.

According to the multi-type air conditioner of the first aspect, when any one of the plurality of indoor units is selected by the indoor unit selection unit, the operation mode setting unit sets
The same operation mode as the operation mode of the indoor unit selected by the indoor unit selection unit is set for another indoor unit. In addition, based on the command to increase the air conditioning capacity of the indoor unit selected by the indoor unit selection unit, the air conditioning capability control unit increases the blowing air volume of the indoor unit selected by the indoor unit selection unit, Then, the operating frequency of the compressor is increased, and the set temperature changing unit changes the set temperature of the thermo-off so that the other indoor unit is easily turned off. By doing so, even if the indoor units in other rooms other than the priority room are in operation, the operation is stopped by thermo-off earlier than usual, and the ability is concentrated on the indoor unit selected in the priority room. The air conditioning capacity of the indoor unit can be reliably increased.

The multi-type air conditioner according to claim 2 is
2. The multi-type air conditioner according to claim 1, wherein the set temperature changing unit of the control device is configured to determine a blowing air volume of the indoor unit selected by the air conditioning capability control unit and an operating frequency of a compressor of the outdoor unit. 3. When raising the temperature, at least one of a change to increase the thermo-off set temperature of the other indoor unit during the cooling operation and a change to decrease the thermo-off set temperature of the other indoor unit during the heating operation is performed.

According to the multi-type air conditioner of the second aspect, when increasing the blow-out air volume of the indoor unit and the operating frequency of the compressor of the outdoor unit selected by the air-conditioning capacity control unit, the cooling operation is performed. Then, by increasing the thermo-off set temperature of the other indoor unit by the set temperature changing unit, the cooling operation is stopped earlier than before the change, while in the heating operation, the other indoor unit is set by the set temperature changing unit by the set temperature changing unit. By lowering the thermostat set temperature of the machine,
Stop the heating operation earlier than before the change. Therefore,
In any of the cooling operation and the heating operation, the operation of the other indoor units can be easily stopped. The multi-type air conditioner may perform only one of a cooling operation and a heating operation, or may perform a cooling and heating operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a multi-type air conditioner according to the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 is a schematic configuration diagram of a multi-type air conditioner according to an embodiment of the present invention, wherein 1 is an outdoor unit having a compressor 10, and 2 to 4 are indoor units connected to the outdoor unit, respectively. Reference numeral 5 denotes a control device for controlling the outdoor unit 1 and the indoor units 2 to 4. The control device 5 sets a priority room selection unit 5a as an indoor unit selection unit that selects any one of the indoor units 2 to 4 as a priority room, and sets the indoor unit selected by the priority room selection unit 5a. The operation mode setting unit 5b that sets the same operation mode as the selected operation mode to the other indoor units, and increases the blowout air volume of the indoor unit selected as the priority room and the operation frequency of the compressor 10 of the outdoor unit 1. When increasing the air flow rate of the air conditioner control section 5c and the blowout air volume of the indoor unit preferentially selected by the air conditioner capacity control section 5c and the operating frequency of the compressor 10 of the outdoor unit 1, the other indoor units are easily thermo-off. A set temperature change unit 5d for changing a set temperature of thermo-off.

[0011] In the multi-type air conditioner having the above configuration,
When performing the cooling operation or the heating operation, one of the indoor units 2 to 4 is selected by the priority room selection unit 5a of the control device 5.
One is selected as the priority room. Then, when the indoor unit selected as the priority room is in the cooling operation mode, the operation mode of the indoor unit in the other room is set to the cooling operation mode by the operation mode setting unit 5b even if the previous operation state is the heating operation mode. Is set. As described above, since the operation mode set for one indoor unit selected as the priority room is unified with the operation mode of the indoor unit for another room, a different operation mode is not set for each indoor unit. By changing the operation mode of the indoor unit selected as the priority room, the operation modes of all the indoor units can be changed at the same time.

Further, the multi-type air conditioner has a powerful operation function of temporarily increasing the air-conditioning capacity by increasing the blowing air volume of the indoor unit and the operating frequency of the compressor of the outdoor unit for a predetermined time. In this powerful operation, when the priority room is not selected, when a request for the powerful operation is made in any one of the indoor units 2 to 4, the air conditioning capability control unit 5c of the control device 5 causes the powerful operation to be performed. The blower air volume of the indoor unit that has been requested to be operated is increased, and the operating frequency of the compressor 10 of the outdoor unit 1 is increased. In this case, since the operating conditions of the indoor units in other rooms do not change, the air conditioning capacity of the other indoor units also increases, and the blowout temperature of the indoor units in the room where the powerful operation was requested does not change much, and the air conditioning capacity increases. Is not enough.

Therefore, in the above-mentioned multi-type air conditioner, in order to increase only the air conditioning capacity of the indoor unit selected as the priority room, the priority unit selection unit 5a of the control unit 5 controls the indoor units 2 to 5.
One of the four rooms is selected as a priority room. Then, when the powerful operation is requested by the indoor unit selected as the priority room, the air conditioning capability control unit 5 of the control device 5 receives the instruction to increase the air conditioning capability of the indoor unit selected as the priority room.
c, the blowing air volume of the indoor unit for which a powerful operation was requested is increased, the operating frequency of the compressor 10 of the outdoor unit 1 is increased, and the set temperature changing unit 5d of the control device 5 is used to turn off the thermo-off of the other indoor units. Change the set temperature. That is, in the cooling operation, the set temperature of the thermo-off is increased, and in the heating operation, the set temperature of the thermo-off is lowered, and the thermo-off is performed earlier than usual. Focus on the machine.

FIGS. 2 and 3 are flow charts showing the operation of the control device 5. The control device 5 according to FIGS.
The priority room selection process and the powerful operation process will be described below.

First, when the process starts, step S
It is determined in step 1 whether or not a priority room is selected. If it is determined that the priority room is selected, the process proceeds to step S2. If it is determined that the priority room is not selected, the process proceeds to step S11 shown in FIG.

Next, in step S2, it is determined whether or not there is a power request from the priority room. If it is determined that there is a power request from the priority room, the process proceeds to step S3. To end.

Next, in step S3, the blowing air volume of the indoor unit in the priority room is increased.

Next, the operation proceeds to step S4, in which it is determined whether or not the operation is the cooling operation. If it is determined that the operation is the cooling operation, the operation proceeds to step S5, and after decreasing the set temperature of the priority room, the operation proceeds to step S7. On the other hand, if it is determined in step S4 that the operation is not the cooling operation, that is, if the operation is the heating operation, the process proceeds to step S6. After the set temperature of the priority room is increased, the process proceeds to step S7.

Next, in step S7, the operating frequency of the compressor 10 is increased.

Next, the process proceeds to step S8, in which it is determined whether or not the cooling operation is performed. If it is determined that the cooling operation is performed, the process proceeds to step S9, in which the set temperatures of the rooms other than the priority room are increased.
This processing ends. On the other hand, if it is determined in step S8 that the operation is not the cooling operation, the process proceeds to step S10, in which the set temperatures of the rooms other than the priority room are reduced, and the process ends.

On the other hand, if it is determined in step S1 that the priority room has not been selected, the flow proceeds to step S11 shown in FIG. 3, and it is determined whether or not there is a power request. If it is determined that there is no request, this processing ends.

Next, in step S12, the blowout air volume of the indoor unit in the room where the power request has been made is increased.

Next, the process proceeds to step S13, where it is determined whether or not the cooling operation is being performed. If it is determined that the cooling operation is being performed, the process proceeds to step S14, where the set temperature of the room for which the power request is made is increased, and this process is performed. finish. On the other hand, step S15
If it is determined that the operation is not the cooling operation, the process proceeds to step S10, in which the set temperature of the room for which the power request has been made is lowered, and this processing ends.

As described above, in the above-mentioned multi-type air conditioner, when a powerful request is made to the indoor unit selected as the priority room, the blowing air volume of the indoor unit is increased and the operating frequency of the compressor of the outdoor unit is increased. In addition, by changing the set temperature so that the thermostats of the indoor units in other rooms that are not selected as the priority room are quickly turned off, the air conditioning of the indoor units in the priority room can be performed even when the indoor units in other rooms other than the priority room are operating. You can certainly increase your ability.

At the time of the powerful operation and the cooling operation, the cooling operation is stopped earlier than before the change by increasing the thermo-off setting temperature of the other indoor unit by the set temperature changing unit 5d in the cooling operation. By lowering the thermo-off set temperature of the other indoor unit by the set temperature changing unit 5d, the heating operation is stopped earlier than before the change, and in any case of the cooling operation and the heating operation, the other indoor unit is changed. Can be easily stopped.

In the above embodiment, the control device 5
Although the multi-type air conditioner provided separately from the outdoor unit 1 and the indoor units 2 to 4 has been described, the control device may be configured by a control unit provided in each of the outdoor unit and the indoor unit.

In the above embodiment, the indoor unit 2
The change value when changing the set temperature of the thermo-off of ~ 4 and the change value when raising the operating frequency of the compressor of the outdoor unit 1 may be appropriately set according to the configuration, capacity and installation conditions of the multi-type air conditioner. I just need.

In the above embodiment, the multi-type air conditioner performing the cooling operation and the heating operation has been described. However, the present invention is applied to the multi-type air conditioner performing only one of the cooling operation and the heating operation. May be.

[0029]

As is apparent from the above description, the multi-type air conditioner according to the first aspect of the present invention is configured such that the multi-type air conditioner according to the first aspect is connected to an outdoor unit having a compressor and the outdoor unit, respectively. In a multi-type air conditioner including a plurality of indoor units and a control device that controls the outdoor unit and the plurality of indoor units, an indoor unit selection unit of the control device includes: Is selected by the operation mode setting unit, and the same operation mode as the operation mode of the indoor unit selected by the indoor unit selection unit is set to another indoor unit, and selected by the indoor unit selection unit. Based on the command to increase the air conditioning capacity of the indoor unit, the air conditioning capacity control unit increases the blowout air volume of the indoor unit selected by the indoor unit selection unit, and increases the operating frequency of the compressor of the outdoor unit. Air conditioning capacity control When raising the blowout air volume of the indoor unit and the operating frequency of the compressor of the outdoor unit that are preferentially selected, the set temperature changing unit changes the set temperature of the thermo-off so that the other indoor units are easily thermo-off. is there.

Therefore, according to the multi-type air conditioner of the first aspect of the present invention, when the air flow rate of the indoor unit and the operating frequency of the compressor of the outdoor unit, which are preferentially selected by the air conditioning capacity control unit, are set, By changing the set temperature of the thermo-off so that the other indoor units are easily thermo-off by the temperature changing unit, even if the indoor units of the other rooms other than the priority room are operating, the thermo-off is performed earlier than usual. Since the operation is stopped and the capacity is concentrated on the indoor unit selected in the priority room, the air conditioning capacity of the indoor unit in the priority room can be reliably increased.

According to a second aspect of the present invention, there is provided a multi-type air conditioner according to the first aspect, wherein the set temperature change section of the control device is selected by the air-conditioning capacity control section. When increasing the blown air volume of the indoor unit and the operating frequency of the compressor of the outdoor unit, changing the thermostat set temperature of the other indoor unit during cooling operation, or changing the other indoor unit during heating operation Since at least one of the changes of lowering the set temperature of the thermo-off is performed, the operation of the other indoor units can be easily stopped in both the cooling operation and the heating operation.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a multi-type air conditioner according to an embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of the control device of the multi-type air conditioner.

FIG. 3 is a flowchart showing the operation of the control device for the multi-type air conditioner following FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... outdoor unit, 2-4 ... indoor unit, 5 ... control apparatus, 5a ... priority room selection part, 5b ... operation mode setting part, 5c ... air conditioning capacity control part, 5d ... set temperature change part, 10 ... compressor.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-41755 (JP, A) JP-A-7-98143 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 11/02 102

Claims (2)

(57) [Claims] An outdoor unit (1) having a compressor, a plurality of indoor units (2 to 3) respectively connected to the outdoor unit (1), the outdoor unit (1) and the plurality of indoor units And a control device (5) for controlling (2-3), wherein the control device (5) is one of the indoor units (2-3). And an operation mode setting unit (5b) for setting the same operation mode as the operation mode of the indoor unit selected by the indoor unit selection unit (5a) for another indoor unit. The indoor unit selection unit (5a) based on a command to increase the air conditioning capacity of the indoor unit selected by the indoor unit selection unit (5a);
The air-conditioning capacity control unit (5c) that raises the blowout air volume of the indoor unit selected by (1) and increases the operating frequency of the compressor of the outdoor unit (1); When increasing the blowing air volume of the indoor unit and the operating frequency of the compressor of the outdoor unit (1), a set temperature changing unit (5d) for changing the set temperature of the thermo-off so that the other indoor unit is easily turned off. A multi-type air conditioner comprising: 2. The multi-type air conditioner according to claim 1, wherein the set temperature changing section (5d) of the control device (5) is the room selected by the air conditioning capacity control section (5c). When increasing the blowout air volume of the unit and the operating frequency of the compressor of the outdoor unit (1), change the set temperature of the thermo-off of the other indoor unit during the cooling operation, or change the other indoor unit during the heating operation. A multi-type air conditioner characterized by performing at least one of a change that lowers a set temperature of a thermo-off of the air conditioner.