JP2000065409A - Controller of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the controller of an air conditioner which can suppress the peak power without giving the user uncomfortableness. SOLUTION: In this controller of air conditioner, the main controller 60 controls water spray controll 51 and 52 when the power consumption gets over the specified value, and sprays water to a heat exchanger working as a condenser from its nozzle so as to cool the heat exchanger. Thereby, since the power load ca be reduced without stopping a compressor 27, the peak power can be suppressed without giving the user the uncomfortableness of interruption of air conditioning operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an air conditioner for reducing peak power.

[0002]

2. Description of the Related Art Conventionally, as a control device of this type of air conditioner, an average electric power during a predetermined period (for example, 30 minutes) is a predetermined value.
Some compressors are stopped to reduce power consumption when they reach (peak value).

[0003]

However, in the above-mentioned conventional control device, there is a problem that the air conditioning operation is interrupted by the stop of the compressor, thereby giving a user discomfort.

An object of the present invention is to provide a control device for an air conditioner that can suppress peak power without giving a user discomfort.

[0005]

According to a first aspect of the present invention, there is provided a control apparatus for an air conditioner, comprising: an auxiliary cooling means having a nozzle for injecting water into a heat exchanger; And a water injection control means for controlling the injection of water from the nozzle of the auxiliary cooling means to the heat exchanger functioning as a condenser when the value exceeds the value.

According to the first aspect of the invention, the water injection control means controls the auxiliary cooling means when the power consumption exceeds the set value, and injects water from the nozzle to the heat exchanger functioning as a condenser. And cool the heat exchanger. As a result, the power load can be reduced without stopping the compressor, so that the peak power can be suppressed without giving the user an uncomfortable feeling of interrupting the air conditioning operation.

According to a second aspect of the present invention, there is provided the air conditioner control device according to the first aspect, further comprising power detection means for detecting power consumption. The auxiliary cooling means increases or decreases the amount of water to be injected or the time to inject water based on the power consumption detected by the power detection means.

According to the second aspect of the present invention, the water injection control means increases or decreases the amount of water to be injected or the time for injecting water by the auxiliary cooling means based on the power consumption detected by the power detection means. The power consumption curve can be flattened with the power peak efficiently suppressed.

According to a third aspect of the present invention, in the control device for an air conditioner according to the first or second aspect, the auxiliary cooling means is attached to a plurality of outdoor units, and the water injection control means is provided. A priority setting means for setting a priority for performing water injection control on the auxiliary cooling means attached to the plurality of outdoor units, and when a total power consumption of the plurality of outdoor units exceeds a set value. Further, the number of auxiliary cooling means for executing the water injection control is increased in this order of priority.

In the third aspect of the present invention, the priority order setting means sets the priority order for executing the water injection control for the plurality of outdoor units. Therefore, for example, by setting the priority of an outdoor unit that is expected to have a large load to be high and setting the priority of an outdoor unit that is expected to have a relatively small load to be low, the peak value of the total power consumption can be efficiently reduced. Can be reduced well. Therefore, the demand control accompanying the stop of the compressor can be avoided as much as possible to improve the comfort. On the other hand, for an outdoor unit in a room where the probability of absence is high, the priority order can be lowered, and the water injection amount can be suppressed to suppress fin deterioration.

According to a fourth aspect of the present invention, in the control device for an air conditioner according to the third aspect, the priority setting means changes the setting of the priority according to a time zone. And

According to the fourth aspect of the present invention, the priority order for performing the water injection control can be set according to a time zone such as a weekday, a holiday, a specific day, a morning, an afternoon, and the like. Therefore, it is possible to cope with a case where the degree of demand for the water injection control of each outdoor unit changes according to the time zone. Therefore, optimal water injection control without waste can be executed.

According to a fifth aspect of the present invention, in the control device for an air conditioner according to the third aspect, the priority order setting means detects a power load of each outdoor unit, and the priority is set according to the power load. It is characterized by setting priorities.

According to the fifth aspect of the present invention, the priority order for performing the water injection control is set according to the electric power load of each outdoor unit.
Therefore, the priority of the water injection control for injecting water into the heat exchanger of the outdoor unit, which has a large power load and whose power consumption easily exceeds the set value, can be set high. On the other hand, the power load is small,
The priority of the water injection control for injecting water into the heat exchanger of the outdoor unit whose power consumption hardly exceeds the set value can be set low. Therefore, it is possible to increase the power consumption reduction amount by the water injection control, reduce the probability of shifting to the demand control, prevent interruption of the air conditioning operation, and suppress the peak power without causing discomfort to the user. be able to.

According to a sixth aspect of the present invention, in the control device for an air conditioner according to the third aspect, the priority order setting means is provided for each of the indoor units in which each indoor unit corresponding to each outdoor unit is installed. A difference between the temperature and a target set temperature of the indoor unit in each room is detected, and the priority of the auxiliary cooling means attached to the outdoor unit having a large difference is set high.

In the invention of claim 6, the priority of the auxiliary cooling means attached to the outdoor unit having a large difference between the indoor temperature of each room and the target set temperature of each indoor unit is set high. Therefore, it is possible to increase the priority of executing the water injection control on the outdoor unit whose power consumption tends to increase. Therefore, the power consumption can be efficiently reduced by the water injection control, the probability that the demand control is performed is reduced, and the discomfort caused by the interruption of the air conditioning operation can be avoided.

According to a seventh aspect of the present invention, in the control device for an air conditioner according to the third aspect, the priority order setting means is attached to an outdoor unit corresponding to an indoor unit installed in an absent room. The auxiliary cooling means is excluded from the priority of the water injection control.

According to the seventh aspect of the present invention, the water injection control means of the outdoor unit corresponding to the room where the comfort is unnecessary is excluded from the priority of the water injection control so that the unnecessary water injection control is not performed. Can be.

According to an eighth aspect of the present invention, in the control device for an air conditioner according to the third aspect, the priority setting means alternately injects water into the auxiliary cooling means having the same priority. Control is executed.

According to the eighth aspect of the present invention, by lowering the auxiliary cooling means having the same priority, the water injection control is executed alternately, whereby a decrease in the fin life due to the water injection can be suppressed.

According to a ninth aspect of the present invention, in the control device for an air conditioner according to the third aspect, the priority setting means divides the plurality of outdoor units into a plurality of groups, and for each group, It is characterized in that priorities for performing water injection control are set.

In the ninth aspect of the present invention, the plurality of outdoor units are divided into a plurality of groups, and the priority order for performing the water injection control is set for each group. Therefore, for example, characteristics such as power consumption levels can be grouped, and priorities can be set for each group. Therefore, the control can be simplified, and the reliability of the control can be improved.

According to a tenth aspect of the present invention, in the control apparatus for an air conditioner according to any one of the first to ninth aspects, the water injection control by the auxiliary cooling means is executed.
When the power consumption does not decrease below a predetermined value, the demand control means for reducing the output of the compressor of the outdoor unit is provided.

According to the tenth aspect of the present invention, the demand control for reducing the output of the compressor of the outdoor unit is performed when the power consumption does not decrease below the predetermined value even when the water injection control by the auxiliary cooling means is executed. . Therefore, peak power can be reliably suppressed. The predetermined value may be the set value in claim 1 or a value shifted from the set value.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

FIG. 1 shows the structure of an outdoor unit of an air conditioner provided with an embodiment of the control device for an air conditioner of the present invention.
The outdoor unit 1 has a heat exchanger 3 and a fan 6 mounted in a case 2. Nozzle 4 facing heat exchanger 3
The nozzle 4 is fixed to the case 2 by a frame 9. The nozzle 4 is connected to a water spray control unit 51 by a water supply pipe 7. This water spray controller 5
Reference numeral 1 includes a motor pump, a solenoid valve, and the like. The nozzle 4, the pipe 7, and the water spray controller 51 constitute auxiliary cooling means.

Next, the configuration of the electric system of this embodiment will be described with reference to FIG. In this embodiment, a plurality of water spray control units 5 attached to a plurality of outdoor units 11, 12,.
, And a main controller 60 that integrally controls the plurality of water spray control units 51, 52,. The water spray control units 51, 52,... Are connected in parallel, and the water spray control unit 51 is connected to the main controller 60.

The outdoor unit 11 obtains three-phase AC power on the terminal block 22 via the breaker 21 with the three-phase wiring 20 from the three-phase AC power supply. The terminal block 22 is connected via a current transformer 23, a switch 25, and an overcurrent relay 26 to a compressor 27 formed by a three-phase AC motor. The terminal block 22 and the current transformer 23 are connected to a detection unit 71 of the water spray control unit 51. The water spray control unit 51 includes the above-described detection unit 71, control unit 72, input / output unit 73, and water spray unit 75. The detection unit 71 includes the outdoor unit 1
1 detects the power consumed, and inputs a power signal representing the detected power consumption to the control unit 72. The control unit 72 inputs the power signal and a power control signal based on the power signal to the input / output unit 73. The input / output unit 73 outputs a water spray control signal based on the power control signal to the water spray control unit 51.
And the power signal is input to the input unit 61 of the main controller 60. The terminal block 22 of the outdoor unit 11
Are connected to the terminal block 22 of the outdoor unit 12. The electric circuit configuration of the outdoor unit 12 is the same as that of the outdoor unit 11.

The main controller 60 comprises an input section 61, a control section 62, an output section 63, and a priority setting section 65. A desired power value Ps can be set from the input unit 61. Further, the input unit 61 inputs a signal representing the set power value Ps to the control unit 62.
Then, the control unit 62 inputs a power control signal for achieving the set power consumption to the output unit 63.
The output unit 63 outputs the power control signal to each of the water spray control units 51, 52,... Or a demand control unit (not shown). The demand control unit controls the output of the compressor 27 of each of the outdoor units 11, 12,... So that the power consumption of the air conditioner during a predetermined time is suppressed to a set predetermined value. Further, the priority order setting section 65 receives the priority order input from the input section 61 or the input section 61 from each of the water spray control sections 51, 52.
Are set based on the information (temperature, power consumption, and the like) input to the plurality of outdoor units 11, 12,...

Next, a control operation when only one outdoor unit 11 is controlled by the control device of the above embodiment will be described with reference to a first flowchart of FIG.

First, in step S1, the water spray controller 5
1 executes normal water spray control. This normal water spray control means that, for example, when the outside air temperature exceeds a predetermined temperature, the solenoid valve of the water spray unit 75 is opened, the motor pump is driven, and the heat exchanger 3 of the outdoor unit 11 is Water intermittently. As a result, the cooling capacity is increased with less power consumption, and the peak value of the power consumption is reduced.

Next, in step S2, the water spray controller 5
1 indicates that the power consumption P detected by the detection unit 71 is
2. Input to the input unit 61 of the main controller 60 via the input / output unit 73. Then, the main controller 60 controls the power consumption P input to the input unit 61 by the control unit 62.
Is determined to be 90% or more of the preset power set value Ps. Then, the control unit 62 determines that P ≧
If it is determined to be 0.9 Ps, the process proceeds to step S3,
If it is determined that P ≧ 0.9Ps, the process returns to step S1.

In step S3, the control unit 62
From 3, a power control signal is input to the input / output unit 73 of the water spray control unit 51. Then, the input / output unit 73 is connected to the water spray unit 75.
The water is continuously sprayed from the nozzle 4 to the heat exchanger 3 by controlling the solenoid valve and the motor pump. At this time, based on the power control signal from the main controller 60, the input / output unit 73
Increase or decrease the amount of water spray. Specifically, the control of the spray amount of water is performed by controlling the opening degree, opening time, and pump output of the solenoid valve. By this continuous spraying of water, the heat exchanger 3 is cooled, and the cooling capacity is maintained with little electric power.

Next, proceeding to step S4, the main controller 60 determines whether or not the power consumption P input from the input / output unit 73 of the water spray control unit 51 is 95% or more of the set power value Ps. . The main controller 60 determines that P ≧ 0.95
If it is determined to be × Ps, the process proceeds to step S5, where the output unit 63 of the main controller 60 outputs a demand control signal to a demand control unit (not shown) to execute demand control.

On the other hand, if the main controller 60 determines that P ≧ 0.95 × Ps is not satisfied in step S4,
Proceed to step S6. In step S6, the main controller 60 determines whether the power consumption P is equal to or less than 85% of the power set value Ps. If it is determined that P ≦ 0.85 × Ps, the process returns to step S1, and P ≦ 0.85 × Ps
If it is not s, the process returns to step S3. As described above, in step S3, the water spray control unit 51 continuously sprays water from the nozzle 4 to the heat exchanger 3 with the control signal from the control unit 62 to maintain the cooling capacity and reduce the power consumption. To reduce The water spray amount is increased or decreased according to the magnitude of the power consumption P.

According to the first flowchart, when the power consumption becomes 90% or more of the predetermined power set value Ps,
Water is continuously sprayed from the nozzle 4 to the heat exchanger 3 to auxiliary cool the heat exchanger 3. Therefore, the power load can be reduced without stopping the compressor 27, and the peak power can be suppressed without impairing the user's comfort. When the power consumption P becomes 85% or less of the set value Ps, the process returns to the normal auxiliary cooling control. When the power consumption P becomes 95% or more of the set value Ps, the process shifts to demand control, the output of the compressor 27 is reduced, and the peak power can be reliably reduced. In step S4, when the power consumption P becomes equal to or more than the set value Ps, the process shifts to the demand control. Further, in step S6, when the power consumption P becomes equal to or less than the set value Ps × 0.90, the control returns to the normal water spray control, thereby suppressing the amount of water spray to the heat exchanger 3 and extending the fin life. Can also. Further, the normal water spray control in step S1 may not be necessary.

Next, with reference to the second flowchart of FIG. 4, the control device of the above-described embodiment uses a plurality of outdoor units 1
Control operations for controlling 1, 12,... Will be described.

First, in step S11, each outdoor unit 1
In steps S1, S12 of the first flowchart,
Similar to 1, the normal water spray control is performed. For example, when the outside air temperature exceeds a predetermined temperature, the nozzle 4
, Water is intermittently sprayed onto the heat exchanger 3.

Next, proceeding to step S12, the priority order setting section 65 of the main controller 60 sets the priority order number N = 0.
Set to.

Next, proceeding to step S13, the main controller 60 outputs the outdoor units 11, 12,... Inputted to the input unit 61 from the plurality of water spray control units 51, 52 of the plurality of outdoor units 11, 12,. Of the power consumptions P1, P2 _,. Then, the main controller 60 includes the control unit 62
The total value P _SAM is set to a preset power set value P
It is determined whether 90% or more of s has been reached. And P
If it is determined that _SAM ≧ Ps × 0.9, step S1
4 and if it is determined that P _SAM ≧ Ps × 0.9,
It returns to step S11.

In step S14, it is determined whether or not the priority order number N has reached the final order n. If it is determined that N = n, the flow advances to step S17 to perform demand control. In this demand control, all outdoor units 1
With respect to 1, 12,..., The compressor 27 is stopped or the output of the compressor 27 is reduced to reduce the total value _{PSAM of the} power consumption.

On the other hand, in step S14, the priority number N
Is not at the final rank n, the step S
Proceed to 15. In this step S15, the priority number
Water is continuously supplied from the nozzle 4 of the water spray unit 75 to the heat exchanger 3 to the (N + 1) outdoor unit, that is, the outdoor unit set to the priority order (N + 1) among the outdoor units 11, 12,. Spray. At this time, based on the power control signal from the main controller 60, the input / output unit 73 increases or decreases the amount of water spray according to the magnitude of the total value P _SAM of the power consumption. Specifically, the control of the spray amount of water is performed by controlling the opening degree, opening time, and pump output of the solenoid valve.

The priority order (N
By cooling the heat exchanger 3 of the outdoor unit of (+1), the power consumption can be reduced without stopping the compressor 27, and the peak power can be suppressed without impairing the user's comfort.

Next, the process proceeds to step S16, where the priority number N is increased by one.

Next, proceeding to step S17, the control unit 62 of the main controller 60 determines whether or not the total power consumption value P _SAM is equal to or more than 95% of the power set value Ps. If the control unit 62 determines that P _SAM ≧ 0.95Ps,
Proceeding to step S18, demand control is performed.
On the other hand, if it is determined in step S17 that P _SAM ≧ 0.95Ps, the process proceeds to step S19. This step S
At 19, it is determined whether or not the total power consumption value P _SAM is equal to or less than 85% of the power set value Ps. This step S1
9, if it is determined that the total power value P _SAM ≦ the power set value Ps × 0.85, the process returns to step S11, and when the outside air temperature exceeds the predetermined temperature, water is intermittently transferred to the heat exchanger 3. Normal water spray control for spraying is performed.

On the other hand, if it is determined in step S19 that the total power value P _SAM exceeds 85% of the set power value Ps, the process returns to step S14 to determine whether the priority number N has reached the final rank n. Judge. If the priority order number N is not the final order n, the process proceeds to step S15, and water is continuously sprayed from the nozzle 4 to the heat exchanger 3 to the outdoor unit having the priority order number (N + 1).

As described above, according to the control of the second flowchart, the total value P _SAM of the power consumption is equal to the power set value P
When 90% or more of s is reached, the operation shifts to the auxiliary cooling operation by continuous spraying of water in the order of preset priority.
Then, as long as the total value P _SAM of the power consumption is smaller than 95% of the power set value Ps and larger than 85% of the power set value Ps, the heat from the nozzles 4 is set in the order of the preset priority. The number of outdoor units for continuously spraying water to the exchanger 3 is increased.

Therefore, by inputting the priorities from the input unit 61 of the main controller 60 to the priority order setting unit 65 in advance, for example, in an order in which power consumption is likely to increase, the auxiliary cooling by continuous spraying of water can be performed. Thus, power consumption can be effectively reduced. Therefore, it is possible to reduce the probability of shifting to the demand control, to prevent the output of the compressor from being reduced or to stop as much as possible, and to reduce the peak value of the power consumption without impairing the comfort. Also,
The spraying of the water, from the main controller 60 based on the power control signal to the water injection control unit 51, 52, in accordance with the magnitude of the power consumption P _SAM, the injection amount of water is increased or decreased. Therefore, the peak of the power consumption can be suppressed efficiently, and the power consumption curve can be flattened.

Further, in this embodiment, the user can set the above-mentioned priorities in a desired order from the input section 61 of the main controller 60. Therefore, the user, for example, according to the schedule of weekdays, holidays, specific days, morning, afternoon, etc.
The priorities can be set in a desired order.

The priority setting section 65 of the main controller 60 detects the power load of each of the outdoor units 11, 12,... From each of the water spray control sections 51, 52,. The order may be set. In this case, the priority of the water injection control for injecting water to the heat exchangers 3 of the outdoor units 11, 12,... Having a large power load can be set high. Therefore, the power consumption can be effectively reduced by the water injection, the transition to the demand control can be avoided, and the peak power can be reduced without impairing the comfort.

The priority setting section 65 of the main controller 60 determines the indoor temperature of each room in which each indoor unit paired with each outdoor unit 11, 12,... Is installed, and the target set temperature of each indoor unit. May be detected, and a higher priority may be set for the water injection control unit attached to the outdoor unit having a large difference. Also in this case, the probability of performing the continuous water injection control on the outdoor unit that tends to increase the power consumption is increased, and the power consumption can be effectively reduced by the auxiliary cooling by the continuous spray of the water. Therefore, it is possible to reduce the probability of shifting to the demand control, to prevent the output of the compressor from being reduced or to stop as much as possible, and to reduce the peak value of the power consumption without impairing the comfort.

Also, a human detection sensor is installed in each room,
The outdoor unit corresponding to the absent room may be excluded from the priority of the continuous water injection control. In this case, it is possible not to perform the continuous water injection control on the outdoor unit that is considered to be absent and consume little or no power.

Further, the plurality of outdoor units may be divided into a plurality of groups, and priorities for performing the continuous water injection control may be set for each group. In this case, for example, by performing the above-described grouping according to the power consumption level, the control content can be simplified, and therefore, the reliability of the control can be improved.

[0054] In the above embodiment, when all the outdoor units which priorities are set even if transition to continuous spray water control, the total value P _SAM does not become more than 85% of the set value Ps, or If the total value _PSAM is equal to or greater than 95% of the set value Ps, demand control for reducing the output of the compressor 27 is performed on all the outdoor units 11, 12,. Therefore, when the power consumption does not become equal to or less than 85% of the set value Ps even when the water is continuously injected, the output of the compressor 27 of the outdoor unit can be reduced, and the peak power can be reliably reduced.

In the above embodiment, the main controller 60 controls the water spray control units 51,
52, the water injection control may be executed alternately. In this case, the water spray control units 51, 52,... Having the same priority perform the water injection control alternately, thereby suppressing a decrease in the fin life of the heat exchanger 3 due to the water injection. Further, in step S17, when the power consumption P becomes equal to or more than the set value Ps, the process may shift to the demand control. Further, in step S19, when the power consumption P becomes equal to or less than the set value Ps × 0.90, the control returns to the normal water spray control, the amount of water spray to the heat exchanger 3 is suppressed, and the fin life is extended. Can also. Further, the normal water spray control in step S11 may be omitted.

[0056]

As is apparent from the above description, in the control device for an air conditioner according to the first aspect of the present invention, the water injection control means controls the auxiliary cooling means when the power consumption exceeds a set value. Then, water is injected from a nozzle to a heat exchanger serving as a condenser to cool the heat exchanger. As a result, the power load can be reduced without stopping the compressor, so that the peak power can be suppressed without giving the user an uncomfortable feeling of interrupting the air conditioning operation.

In the control device for an air conditioner according to the second aspect of the present invention, the water injection control means injects water or the amount of water injected by the auxiliary cooling means based on the power consumption detected by the power detection means. Since the power consumption time is increased or decreased, the peak of the power consumption can be suppressed efficiently and the power consumption curve can be flattened.

Further, in the invention according to claim 3, the priority order setting means sets the priority order for executing the water injection control for the plurality of outdoor units. Therefore, for example, by setting the priority of an outdoor unit expected to have a large load to be high and setting the priority of an outdoor unit expected to have a relatively small load to be low, demand control with a stoppage of the compressor is achieved. As much as possible to improve comfort. Also, on the other hand,
For outdoor units in rooms where the probability of absence is high, the priority order is lowered, so that it is easy to shift to demand control, and the amount of water injection can be suppressed to suppress fin deterioration.

According to the fourth aspect of the present invention, the priority order for water injection control can be set according to the time zone such as weekdays, holidays, specific days, morning, afternoon and the like. Therefore, it is possible to cope with a case where the degree of demand for the water injection control of each outdoor unit changes according to the time zone. Therefore, optimal water injection control without waste can be executed.

According to the fifth aspect of the present invention, the priority order for performing the water injection control is set according to the electric power load of each outdoor unit.
Therefore, the priority of the water injection control for injecting water into the heat exchanger of the outdoor unit, which has a large power load and whose power consumption easily exceeds the set value, can be set high. On the other hand, the power load is small,
The priority of the water injection control for injecting water into the heat exchanger of the outdoor unit whose power consumption hardly exceeds the set value can be set low. Therefore, the power consumption reduction width due to the water injection control can be increased, the probability of shifting to the demand control can be reduced, and the peak power can be suppressed without giving the user discomfort.

In the invention of claim 6, the priority of the water injection control means attached to the outdoor unit having a large difference between the indoor temperature of each room and the target set temperature of each indoor unit is set high. Therefore, it is possible to increase the priority of executing the water injection control on the outdoor unit whose power consumption tends to increase. Therefore, the power consumption can be efficiently reduced by the water injection control, the probability of performing the demand control can be reduced, and the discomfort caused by the interruption of the air conditioning operation can be avoided.

According to the seventh aspect of the present invention, the water injection control means of the outdoor unit corresponding to the absent room where the comfort is unnecessary is excluded from the priority of the water injection control, and the unnecessary water injection control is not performed. I can do it.

According to the eighth aspect of the present invention, the water injection control means having the same priority order execute the water injection control alternately, thereby suppressing a decrease in the fin life due to the water injection.

According to a ninth aspect of the present invention, a plurality of outdoor units are divided into a plurality of groups, and a priority order for performing the water injection control is set for each group. Therefore, for example, characteristics such as power consumption levels can be grouped, and priorities can be set for each group. Therefore, control can be simplified, and control reliability can be improved.

According to a tenth aspect of the present invention, the demand control for reducing the output of the compressor of the outdoor unit when the power consumption does not decrease below the predetermined value even when the water injection control is performed by the water injection control means. I do. Therefore, peak power can be reliably suppressed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a structure of an outdoor unit including a control device for an air conditioner of the present invention.

FIG. 2 is a block diagram showing an embodiment of a control device for an air conditioner of the present invention.

FIG. 3 is a first flowchart illustrating an operation when one outdoor unit is controlled in the embodiment.

FIG. 4 is a second flowchart illustrating an operation when controlling a plurality of outdoor units in the embodiment.

[Explanation of symbols]

2 ... Case, 3 ... Heat exchanger, 4 ... Nozzle, 6 ... Fan,
7 ... water supply piping, 9 ... frame, 11, 12 ... outdoor unit, 20 ... three-phase AC wiring, 21 ... breaker, 22 ... terminal block, 23 ... current transformer, 25 ... switch, 26 ... resistor, 27 ...
Compressor 51,52 water spray control unit 60 main controller 61 input unit 62 control unit 63 output unit 6
5: priority setting section, 71: detection section, 72: control section, 7
3: Input / output unit, 75: Water spray unit.

Continuation of the front page (72) Inventor Shuji Ota 1-7-4 Higashinoda-cho, Miyakojima-ku, Osaka-shi, Osaka F-term (Reference) 3L060 AA08 CC02 CC10 DD08 EE01 EE45

Claims (10)

[Claims] 1. A nozzle (4) for injecting water into a heat exchanger (3).
An auxiliary cooling means (4, 7, 51, 52) having the following: when the power consumption exceeds a set value, the auxiliary cooling means
Water injection control means (60) for controlling water to be injected from the (4, 7, 51, 52) nozzle (4) to the heat exchanger (3) serving as a condenser. Control device for air conditioner. 2. The control device for an air conditioner according to claim 1, further comprising: power detection means (23, 71) for detecting power consumption, wherein said water injection control means (60) comprises: 23, 71), wherein the auxiliary cooling means (4, 7, 51, 52) increases or decreases the amount of water to be injected or the time for injecting water based on the power consumption detected in the air conditioner. Control device. 3. The control device for an air conditioner according to claim 1, wherein the auxiliary cooling means (4, 7, 51, 52) includes a plurality of outdoor units.
The water injection control means (60) is attached to the plurality of outdoor units (11, 12) with respect to the auxiliary cooling means (4, 7, 51, 52). A priority setting means (65) for setting a priority for performing water spray control. When the total power consumption of the plurality of outdoor units (11, 12) exceeds a set value, the priority order is set in this priority order. A control device for an air conditioner, characterized by increasing auxiliary cooling means (4, 7, 51, 52) for executing water injection control. 4. The air conditioner control apparatus according to claim 3, wherein the priority setting means (65) changes the setting of the priority in accordance with a time zone. Machine control device. 5. The control device for an air conditioner according to claim 3, wherein the priority setting means (65) detects a power load of each of the outdoor units (11, 12), and detects the power load in accordance with the power load. A control device for an air conditioner, wherein the priorities are set. 6. The control device for an air conditioner according to claim 3, wherein the priority order setting means (65) comprises: an indoor unit of each room in which an indoor unit corresponding to each of the outdoor units (11, 12) is installed. The difference between the temperature and the target set temperature of the indoor unit in each room is detected, and the auxiliary cooling means (4, 7, 5) attached to the outdoor unit (11, 12) corresponding to the indoor unit having a large difference is detected.
(1) The control device for an air conditioner, wherein the priority order is set high. 7. The control device for an air conditioner according to claim 3, wherein the priority order setting means (60) includes an outdoor unit (11,1) corresponding to an indoor unit installed in an absent room.
The control device for an air conditioner, wherein the auxiliary cooling means (4, 7, 51, 52) attached to 2) is excluded from the priority of water injection control. 8. The control device for an air conditioner according to claim 3, wherein the priority setting means (60) is provided for the auxiliary cooling means (4, 7, 51, 52) having the same priority. A control device for an air conditioner, wherein water injection control is executed in turn. 9. The control device for an air conditioner according to claim 3, wherein the priority setting means (60) divides the plurality of outdoor units (11, 12) into a plurality of groups, and for each group, A control device for an air conditioner, wherein priorities for performing the water injection control are set. 10. The control device for an air conditioner according to claim 1, wherein even if the water injection control is performed by the auxiliary cooling means (4, 7, 51, 52), the consumption is reduced. A control device for an air conditioner, comprising: a demand control means (60) for reducing an output of a compressor (27) of an outdoor unit (11, 12) when power does not decrease below a predetermined value.