JPH1194331A - Air conditioning control system - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide an air-conditioning control system capable of suppressing a temperature decrease (increase) that occurs when the number of operating air conditioners changes. The present invention relates to a first air conditioner for air-conditioning an area to be air-conditioned, a second air conditioner for air-conditioning an area to be air-conditioned, and hot water for heating flowing in the first air conditioner. A first valve for adjusting the flow rate of the cooling cold water and the humidifying water, and a second valve for adjusting the flow rate of the heating hot water, the cooling cold water, and the humidifying water flowing in the second air conditioner; When a stop command for the first air conditioner is issued, first valve opening control means for decreasing the opening value of the first valve at predetermined intervals, and a stop command for the second air conditioner are issued. And a second valve opening control means for reducing the opening value of the second valve at a predetermined interval in the case where the operation is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioning control system, and more particularly to an air conditioning control system for performing temperature control and humidity control by automatically adjusting the opening of a heating valve, a cold water valve, and a humidifying valve.

[0002]

2. Description of the Related Art A large air conditioner is often used for adjusting the temperature and humidity of buildings and factories. In such an air conditioner, the actual temperature and humidity are adjusted by changing the opening of a valve that adjusts the flow rate of heated hot water (hot water), cooling water (cold water), and hot water for humidification sent into the air conditioner. It is done by doing.

The temperature set by the operator (temperature set value)
If the actual air temperature (temperature measurement) is lower,
The temperature can be raised by increasing the opening of the heating valve.

When the measured temperature value is higher than the set temperature value, the temperature can be lowered by increasing the opening of the chilled water valve. On the other hand, the humidity (humidity set value) set by the operator is the actual air humidity (humidity measured value).
If it is larger, the opening of the chilled water valve is increased to increase the amount of chilled water to the air conditioner, whereby the air can be cooled to make water vapor in the air into water droplets and dehumidify.

When the measured humidity value is higher than the set humidity value, the degree of opening of the humidifying valve is increased so that
Water vapor can be sprayed into the air to humidify. Adjustment of the opening of this valve is performed by an air conditioning controller or DDC (Direct d
digital control). The air-conditioning control device constantly monitors the temperature (humidity) set value and the temperature (humidity) measured value, and automatically adjusts the valve opening so that the measured value approaches the set value.

One area may be controlled using a plurality of air conditioners, depending on the amount of heat applied to the area (room) to be controlled. The reasons are as follows. 1. In order to prevent waste of control such that one of the air conditioners tries to heat the air while another air conditioner tries to cool the air.

[0007] 2. In order to average the control amounts of each operating air conditioner so that there is no bias. FIG. 9 is a diagram showing such a conventional air conditioning control system.

FIG. 9 shows a system for controlling the temperature of one area using two air conditioners and one air conditioning control device. In the figure, the air conditioning controller 2 humidifies the air conditioners A and B based on the input from one humidity temperature sensor 1 common to the two air conditioners A and B and the set value of the humidity temperature. The openings of the valves 3a and 3b, the heating valves 4a and 4b, and the cold water valves 5a and 5b are automatically adjusted.

At this time, when both the air conditioners A and B are operated, the temperatures of the air conditioners A and B are adjusted to the same value and the temperature is adjusted. Thereby, the above 2
One condition can be satisfied.

In FIG. 9, when the load of the supplied heat amount is small and one air conditioner is sufficient,
One of A and B is stopped, the valve that has been stopped is fully closed, and only the opening of the remaining operating air conditioner is automatically adjusted to perform temperature control.

FIG. 10 is a diagram showing a configuration of a conventional air conditioning control device. In the figure, an input processing unit 11 receives a temperature / humidity set value from an operator, an air conditioner operation / stop command, a temperature / humidity measured value from a measuring instrument, an air conditioner state, a failure signal, and the like. .

The temperature control unit 12 determines the optimum value of the opening degree of the heating valve and the opening degree of the cold water valve for temperature control from the measured temperature value and the set temperature value input from the input processing unit 11. The humidity control unit 13 determines optimal values of the humidification valve opening and the chilled water valve opening for humidity control from the measured humidity value and the set humidity value input from the input processing unit 11.

The maximum value selection processing section 14 includes a temperature control section 12
And the output value of the humidity control unit 13 (optimum value of the chilled water valve opening) are selected as the chilled water valve opening value. The control processing unit 15 receives an air conditioner control command (operation command / stop command) from the operator and outputs an operation / stop command to the corresponding device.

The valve opening distribution processing section 16 outputs the valve opening values calculated by the temperature control section 12, the humidity control section 13 and the maximum value selection processing section 14 to a plurality of air conditioners. However, the lowest value (0
%) Is output.

The output processing unit 17 includes a temperature control unit 12, a humidity control unit 13, a maximum value selection processing unit 14, and a control processing unit 15.
Output to the actual device. FIG. 11 is a flowchart showing the operation of the valve opening distribution processing unit 16.

As shown in FIG. 1, the valve opening distribution processing section 16 first determines whether or not the air conditioner A is operating (step 1). If it is determined in Step 1 that the air conditioner A is operating, the heating valve opening a output from the temperature control unit 12 is calculated, and the heating valve opening a1 of the air conditioner A is output to the output processing unit 17. (Step 2).

Next, the chilled water valve opening b output from the maximum value selection processing unit 14 is calculated, and the chilled water valve opening b1 of the air conditioner A is output to the output processing unit 17 (step 3). Next, the humidification valve opening c output from the humidity control unit 13 is calculated, and the humidification valve opening c1 of the air conditioner A is calculated by the output processing unit 1.
7 (step 4).

On the other hand, if it is determined in step 1 that the air conditioner A is not operating, the heating valve opening al of the air conditioner A is output to the output processing unit 17 (step 1).
5). Then, the chilled water valve opening b1 of the air conditioner A is output to the output processing unit 17 (step 6), and the humidification valve opening c1 of the air conditioner A is output to the output processing unit 17 (step 6).
p7).

In step 4 or step 7, after the humidification valve opening c1 of the air conditioner A is output to the output processing section 17, it is determined whether or not the air conditioner B is operating (step 8).

If it is determined in step 8 that the air conditioner B is in operation, the heating valve opening a output from the temperature controller 12 is calculated, and the heating valve opening a1 of the air conditioner B is output. The data is output to the processing unit 17 (step 9).

Next, the chilled water valve opening b output from the maximum value selection processing unit 14 is calculated, and the chilled water valve opening b1 of the air conditioner B is output to the output processing unit 17 (step 10).
Next, the humidification valve opening c output from the humidity control unit 13
And outputs the humidification valve opening c1 of the air conditioner B to the output processing unit 17 (step 11).

On the other hand, if it is determined in step 8 that the air conditioner B is not operating, the heating valve opening a1 of the air conditioner B is output to the output processing unit 17 (step 1).
2). Then, the chilled water valve opening b1 of the air conditioner B is output to the output processing unit 17 (step 13), and the humidification valve opening c1 of the air conditioner B is output to the output processing unit 17 (st).
ep14).

[0023]

In the above-mentioned conventional air-conditioning control apparatus, when a plurality of air conditioners control the same area, good air-conditioning control can be performed if the number of operating air conditioners is fixed. However, when the air conditioner is operated by changing the number of operating air conditioners depending on the load, there are the following problems when the number of operating air conditioners is changed.

Here, as an example for ease of explanation, a case where one area is controlled using two air conditioners as shown in FIG. 9 will be described. First, as a first problem, there is a problem that the temperature temporarily decreases (increases) when the operation of two air conditioners is switched to the operation of one air conditioner.

For example, in FIG. 9, the value of the set temperature and the measured temperature match, and good control is performed, and the air-conditioning controller sets the opening of the heating valves of the air conditioners A and B to 20%. It is assumed that is controlled. Here, it is assumed that the operator has switched from the operation of two air conditioners to the operation of only one air conditioner A because the load heat amount is small.

When the air conditioner B is stopped, as shown in FIG. 12, the amount of heat supplied by the air conditioner B is rapidly lost, the amount of heat supplied to the area decreases, and the temperature in the area decreases. Get up.

Thereafter, the opening of the heating valve of the air conditioner A is increased by the normal automatic control, and the measured temperature goes to the set temperature, but it takes some time until it becomes stable.
A state lower than the set temperature occurs.

As a second problem, there is also a problem that the temperature is temporarily increased (decreased) when the operation is switched from one operation to two operations. With the control of only the air conditioner A, control is performed in which the set temperature and the measured temperature value match,
It is assumed that the air conditioning control device controls the opening of the heating valve of the air conditioner A to 90%.

Here, it is assumed that the operator has switched from operating one air conditioner to operating two air conditioners because the load heat quantity is large. At this time, from the condition of the coincidence of the valve opening values of the air conditioner A and the air conditioner B to the condition of the coincidence of the valve opening values of the air conditioner A and the air conditioner B, the valve of both the air conditioner A and the air conditioner B is changed. An output of 90% is output.

In this case, the supply of heat to the area suddenly increases, so that the temperature in the area rises. After that, the air conditioner A, the air conditioner B
Although the opening degree of the heating valve decreases and the measured temperature approaches the set temperature, it takes some time until it becomes stable, and during that time, a state higher than the set temperature occurs.

As a third problem, there is a problem that the temperature temporarily drops (rises) when one of the air conditioners is stopped due to a failure or the like during operation. That is,
Similarly to the first problem, the supply of heat to the area suddenly decreases, so that the temperature temporarily drops (rises).

The above problem occurs not only in switching from one unit to two units and from two units to one unit but also in common when the number of air conditioners changes. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an air conditioning control system capable of suppressing a temperature decrease (increase) that occurs when the number of operating air conditioners changes.

[0033]

Therefore, first, in order to achieve the above object, a first aspect of the present invention is to provide a plurality of air conditioners for air-conditioning an area to be air-conditioned and a plurality of air conditioners provided for each of the plurality of air conditioners. A valve for adjusting the flow rate of the air-conditioning medium flowing in the corresponding air conditioner, and an air conditioner operating in the direction of inputting the temperature of the area to be air-conditioned and suppressing the temperature change in response to the temperature change. The operation device control means for controlling the opening degree of the valve corresponding to the above, and when a stop command is issued to any of the air conditioners, the opening degree value of the valve corresponding to the air conditioner for which the stop command was issued is An air conditioning control system characterized by comprising: a stop device control means for gradually decreasing the air conditioner to which a stop command is issued when the opening value becomes equal to or less than a predetermined value.

According to a second aspect of the present invention, a plurality of air conditioners for air-conditioning an area to be air-conditioned and a flow rate of an air-conditioning medium provided for each of the plurality of air conditioners and flowing in the corresponding air conditioner are adjusted. A valve for inputting the temperature of the area to be air-conditioned, in a direction to suppress the temperature change corresponding to the temperature change, and so that the opening degree of each valve corresponding to the operating air conditioner is equal. The operation control means for controlling the opening of each valve so that the opening of each valve is equal, and when the operation command is issued to the stopped air conditioner, it corresponds to the air conditioner to which this operation command was issued. And a starter control means for gradually increasing the opening value of the valve.

Further, a third invention is the air conditioning control system according to the first invention or the second invention, wherein when any one of the air conditioners is shut down due to a failure, the valve corresponding to the air conditioner in operation. The air conditioning control system according to claim 1, further comprising a failure control means for controlling the opening value of the air conditioner to an opening value for compensating the amount of heat supplied to the air conditioning target area by the failed air conditioner.

Next, the operation of each invention will be described. According to the first aspect, when a stop command is issued to any of the air conditioners by the stop device control means, the opening degree value of the valve corresponding to the air conditioner to which the stop command has been issued is gradually reduced. When the opening value falls below the predetermined value, the air conditioner to which the stop command has been issued is stopped, so even when some air conditioners are stopped, air conditioning control can be performed without temporarily causing a large temperature drop. Can do it.

According to a second aspect of the present invention, when an operation command is issued to the stopped air conditioner by the starter control means, the opening value of the valve corresponding to the air conditioner to which the operation command was issued is gradually reduced. Therefore, even when the number of operating air conditioners is increased, the air conditioning control can be performed without temporarily causing a significant temperature rise.

According to the fourth invention, the first invention or the second invention
In the invention, when one of the air conditioners is shut down due to a failure by the failure time control means, the failed air conditioner supplies the opening value of the valve corresponding to the operating air conditioner to the air conditioning target area. Since the control is performed to an opening value that compensates for the amount of heat, the temporary increase in the temperature (humidity) of the area can be prevented even when the air conditioner suddenly stops due to a failure.

[0039]

Embodiments of the present invention will be described below with reference to the drawings. <First Embodiment> FIG. 1 is a diagram showing a configuration of an air conditioning control device in an air conditioning control system according to a first embodiment of the present invention. In addition, about the whole structure of an air-conditioning control system, the structure similar to what was shown in FIG. 9 shall be employ | adopted.

In the figure, an input processing section 21 receives a temperature / humidity set value from an operator, an air conditioner operation / stop command, a temperature / humidity measured value from a measuring instrument, an air conditioner state, a failure signal, and the like. Is entered.

The temperature control unit 22 determines the optimum value of the opening of the heating valve and the opening of the cold water valve for temperature control from the measured temperature value and the set temperature value input from the input processing unit 21. The humidity control unit 23 determines optimal values of the humidification valve opening and the chilled water valve opening for humidity control from the measured humidity value and the set humidity value input from the input processing unit 21.

The maximum value selection processing section 24 includes a temperature control section 22
And the output value of the humidity controller 23 (optimum value of the chilled water valve opening) are selected as the chilled water valve opening value. When the air conditioner control auxiliary processing unit 25 receives the air conditioner stop command, the stop command is input regardless of the temperature control unit 22 and the humidity control unit 23 with respect to the opening degree of the air conditioner valve. It gradually decreases at a certain rate from the value at the time. Then, a process of stopping the air conditioner is performed when the gradually reduced valve opening value becomes 0%.

The output processing unit 26 outputs the output from the air conditioner control auxiliary processing unit 25 to actual equipment. FIG. 2 is a flowchart showing the operation of the temperature control unit 22.

The same operation is performed for the humidity controller 23. As shown in the figure, in the temperature control unit 22, whether the air conditioner A is operating or the air conditioner B
It is determined whether or not the vehicle is driving (step 2).
1).

If it is determined in step 21 that the air conditioner A or the air conditioner B is operating, the change amount α calculated from the measured temperature (humidity) value and the set temperature (humidity) value is calculated. By adding to the valve opening output value MV ',
The current valve opening output value MV is calculated (step 2
2).

However, when all the air conditioners are stopped, the valve opening output value MV is set to “0”. Note that the method of calculating α is not directly related to the gist of the present invention, and thus the description thereof is omitted.

Then, the valve opening value MV calculated in step 22 is output as a valve opening output value MV '(step 23). On the other hand, in step 21,
If it is determined that the air conditioner A or the air conditioner B is not operating, the valve opening value “0” is set to MV (st
ep24).

Then, the valve opening value MV set in step 22 is output as a valve opening output value MV '(step 23). FIGS. 3 to 5 are flowcharts for explaining the operation of the air conditioner control auxiliary processing unit of the air conditioning control device in the air conditioning control system according to the present embodiment.

First, as shown in FIG.
At p31, it is determined whether or not there is an operation command for the air conditioner A. If it is determined in step 31 that there is no operation command for the air conditioner A, it is next determined whether or not the air conditioner A is operating (step 3).
2).

If it is determined in step 32 that the air conditioner A is in operation, the stop control flag F1 =
It is determined whether the value is 1 (step 33). s
If it is determined in step 33 that the stop control-in-progress flag F1 is not 1, then it is determined whether or not there is a command to stop the air conditioner A (step 34).

If it is determined in step 34 that there is no command to stop the air conditioner A, the heating valve opening a calculated by the temperature control unit 22 is set to the heating valve opening a1 (step 35), and the maximum value is selected. The chilled water valve opening b calculated by the processing unit 24 is set as the chilled water valve opening b1 (ste
p36), the humidification valve opening c calculated by the humidity controller 23 is set as the humidification valve opening c1 (step 37).

On the other hand, if it is determined in step 31 that there is an operation command for the air conditioner A, "0" is set in the stop control flag F1 (step 38), and step 3
Move to the processing of 2.

If it is determined in step 34 that there is a stop command for the air conditioner A, the stop control flag F1 is set to "1" (step 39), and the current heating valve opening value a and the cold water The valve opening value b and the humidifying valve opening value c are set to a1 ', b1', and c1 ', respectively.

Next, in step 42, a1 '> 0
Is determined, and when it is determined that a1 ′> 0, the heating valve opening a1 ′ is set to the heating valve opening a1 of the air conditioner A (step 43).

On the other hand, in step 42, a1 '>
If it is determined that it is not 0, a1 'is set to "0", and the process proceeds to step 43. Next, in step 45, it is determined whether or not b1 '> 0, and
If it is determined that 1 ′> 0, the chilled water valve opening b1 ′ is set to the chilled water valve opening b1 of the air conditioner A (ste
p46).

On the other hand, in step 45, b1 '>
If it is determined that the value is not 0, “0” is set to b1 ′, and the process proceeds to step 46. Next, at step 48, it is determined whether or not c1 ′> 0, and c
If it is determined that 1 ′> 0, the humidifying valve opening c1 ′ is set to the humidifying valve opening c1 of the air conditioner A (ste
p49).

On the other hand, in step 48, c1 '>
If it is determined that the value is not 0, “0” is set to c1 ′, and the process proceeds to step 49. Further, when "1" is set in the stop control flag F1 in step 39, the coefficient m is subtracted from a1, b1, and c1 in each execution cycle (step 41), and the process proceeds to step 42.

Then, in step 51, a1 '=
It is determined whether or not b1 '= c1' = 0 (s
If it is determined that a1 ′ = b1 ′ = c1 ′ = 0, a stop command is output to the air conditioner A (step 52), and “0” is set in the stop control flag F1. (Step 53), the process proceeds to the control of the air conditioner B.

In step 51, a1 ′ =
When it is determined that b1 ′ = c1 ′ = 0, the process proceeds to the control of the air conditioner B. On the other hand, when it is determined in step 32 that the air conditioner A is not operating, “0” is set for the heating valve, the cold water valve, and the humidifying valve of the air conditioner A.
Is output (steps 54 to 56), and the air conditioner B
Move on to control.

The control of the air conditioner B is the same as the control of the air conditioner A. That is, in step 61, it is determined whether or not there is an operation command for the air conditioner B.

If it is determined in step 61 that there is no operation command for the air conditioner B, it is next determined whether or not the air conditioner B is operating (step 62).
When it is determined in step 62 that the air conditioner B is operating, it is determined whether or not the stop control-in-progress flag F2 = 1 (step 63).

If it is determined in step 63 that the stop control-in-progress flag F2 is not 1, then the air conditioner B
It is determined whether or not a stop command is issued (step
64).

If it is determined in step 64 that there is no command to stop the air conditioner B, the heating valve opening a calculated by the temperature controller 22 is set to the heating valve opening a2 (step 65), and the maximum value is selected. The chilled water valve opening b calculated by the processing unit 24 is set as the chilled water valve opening b2 (ste
p66), the humidification valve opening c calculated by the humidity controller 23 is set as the humidification valve opening c2 (step 67).

On the other hand, if it is determined in step 61 that there is an operation command for the air conditioner B, "0" is set in the stop control flag F2 (step 68), and step 6
Move to the processing of 2.

If it is determined in step 64 that a command to stop the air conditioner B has been issued, the stop control in-progress flag F2 is set to "1" (step 69), and the current heating valve opening value a, cold water The valve opening value b and the humidifying valve opening value c are set to a2 ', b2', and c2 ', respectively.

Next, in step 72, a2 '> 0
Is determined, and when it is determined that a2 '> 0, the heating valve opening a2' is set to the heating valve opening a2 of the air conditioner B (step 73).

On the other hand, in step 72, a2 '>
When it is determined that it is not 0, a2 'is set to "0", and the process proceeds to step 73. Next, in step 75, it is determined whether or not b2 ′> 0.
If it is determined that 2 ′> 0, the chilled water valve opening b2 ′ is set to the chilled water valve opening b2 of the air conditioner B (ste
p76).

On the other hand, in step 75, b2 '>
If it is determined that the value is not 0, “0” is set to b2 ′, and the process proceeds to step 76. Next, in step 78, it is determined whether or not c2 ′> 0.
If it is determined that 2 ′> 0, the humidifying valve opening c2 ′ is set to the humidifying valve opening c2 of the air conditioner B (ste
p79).

On the other hand, in step 78, c2 '>
If it is determined that the value is not 0, “0” is set to c2 ′, and the process proceeds to step 79. Further, when “1” is set to the stop control flag F2 in step 69, a value obtained by subtracting the coefficient m for each execution cycle is output to each valve of the air conditioner B (step 71).

Then, in step 81, a2 ′ =
It is determined whether or not b2 ′ = c2 ′ = 0 (s
If it is determined that a2 ′ = b2 ′ = c2 ′ = 0, a stop command is output to the air conditioner B (step 82), and “0” is set in the stop control flag F2. (Step 83), the control is terminated.

In step 81, a2 ′ =
If it is determined that b2 '= c2' = 0, the control is terminated. On the other hand, when it is determined in step 62 that the air conditioner B is not operating, “0” is output to the heating valve, the cold water valve, and the humidifying valve (step
From p84 to step 86), the control ends.

According to the air conditioning control system of the present embodiment, when one of a plurality of air conditioners is stopped,
The amount of heat supplied to the air conditioner can be gradually reduced. As a result, the temperature (humidity) of the area gradually decreases (increases) due to the decrease in the amount of heat supplied, but the normal temperature control (humidity control) corresponding to the temperature immediately responds, and the remaining air conditioners in operation Since the amount of supplied heat increases, the temperature (humidity) does not significantly decrease (increase).

Therefore, according to the air-conditioning control system of the present embodiment, an air-conditioning control device that does not temporarily cause a large temperature drop (rise) even when a part of a plurality of air conditioners is stopped is provided. can do. <Second Embodiment> FIGS. 6 and 7 are flow charts for explaining the operation of an air conditioner control auxiliary processing section of an air conditioning control device in an air conditioning control system according to a second embodiment of the present invention. is there.

First, as shown in FIG.
At p101, it is determined whether or not there is an operation command for the air conditioner A. In step 101, the air conditioner A
If it is determined that there is no operation command for
It is determined whether or not there is a stop command for A (step
102) If it is determined in step 102 that there is no command to stop the air conditioner A, then it is determined whether the air conditioner A is operating (step 103).

On the other hand, in step 101, the air conditioner A
If it is determined that there is an operation command of "1", "0" is set in the stop control flag F1 (step 104), and
Move to the processing of p102.

In step 102, the air conditioner A
If it is determined that there is a stop command, the flag F3 under activation control is set to "0", and the process proceeds to step 103. If it is determined in step 103 that the air conditioner A is operating, it is determined whether or not the activation control flag F3 = 1 is set (step 106). Stop control in progress flag F1 =
It is determined whether the value is 1 (step 107).

If it is determined in step 108 that there is no command to stop the air conditioner A, the heating valve opening a calculated by the temperature control unit 22 is set to the heating valve opening a1 (step 109), and the maximum value is selected. The chilled water valve opening b calculated by the processing unit 24 is set as the chilled water valve opening b1 (st
ep110), the humidification valve opening c calculated by the humidity control unit 23 is set as the humidification valve opening c1 (step 11).
1). Then, the same control is performed for the air conditioner B.

In step 108, the air conditioner A
If it is determined that the stop command is issued, "1" is set to the stop control flag F1 (step 112), and the current heating valve opening value a, cold water valve opening value b, and humidifying valve opening value are set. c is set to a1 ′, b1 ′, and c1 ′ (step 113) Next, in step 114, it is determined whether or not a1 ′> 0, and if it is determined that a1 ′> 0, Is determined whether or not a1 '> a2 (step 115).

If it is determined in step 115 that a1 '> a2, the heating valve opening a1' is set to the heating valve opening a1 of the air conditioner A (step 11).
6). On the other hand, if it is determined in step 114 that a1 ′> 0 is not satisfied, “0” is set in a1 ′ (step 117), and the process proceeds to step 115. If it is determined in step 115 that a1 ′> a2 is not satisfied, a2 is set to a1 ′ (step1).
18) The process proceeds to step 116.

After the processing in step 116, b1 '> 0
Is determined (step 119), and b
When it is determined that 1 ′> 0, it is determined whether or not b1 ′> b2 (step 120).

If it is determined in step 120 that b1 '> b2, the chilled water valve opening b1' is set to the chilled water valve opening b1 of the air conditioner A (step 12).
1). On the other hand, if it is determined in step 119 that b1 '> 0 is not satisfied, "0" is set in b1' (step 122), and the process proceeds to step 120. If it is determined in step 120 that b1 '> b2 is not satisfied, b2 is set to b1' (step1).
23), the process proceeds to step 121.

Next, in step 124, c1 '>
It is determined whether or not c1 '> 0. If it is determined that c1'> 0, it is determined whether or not c1 '> c2 (step 125).

If it is determined in step 125 that c1 '> c2, the humidifying valve opening c1' is set to the humidifying valve opening c1 of the air conditioner A (step 12).
6). On the other hand, if it is determined in step 124 that c1 ′> 0 is not satisfied, “0” is set in c1 ′ (step 127), and the process proceeds to step 125. If it is determined in step 125 that c1 ′> c2 is not established, c1 ′ is set to c2 (step1).
28), the process proceeds to step 126.

After the processing in step 126, the stop control in progress flag F1 = 1 and a1 '= b1' = c1 '= 0
Is determined (step 129). s
In step 129, if it is determined that the stop control-in-progress flag F1 = 1 and a1 '= b1' = c1 '= 0, a stop command for the air conditioner A is output (step 1).
30), “0” is set to the stop control flag F1 (s)
step131).

After the process in step 131, the activation control flag F3 = 1, and a1 '= a2, b1' = b
2. It is determined whether or not c1 ′ = c1 (st
ep132). On the other hand, in step 129, the stop control-in-progress flag F1 = 1, and a1 ′ = b1 ′ = c
If it is determined that 1 ′ = 0, step 132
Move on to processing.

In step 132, the start control flag F3 = 1, a1 '= a2, b1' = b2,
When it is determined that c1 ′ = c1, “0” is set in the start-up control flag F3, and the process proceeds to the control of the air conditioner B.
Since the control method of the air conditioner B is the same as the control method of the air conditioner A, the description is omitted here.

On the other hand, in step 132, the activation control flag F3 = 1, and a1 '= a2, b1'
= B2, c1 '= c1, it is determined that the air conditioner B is to be controlled.

On the other hand, if "1" is set in the stop control flag F1 in step 112, it is determined in step 107 that the stop control flag F1 = 1.
The value obtained by subtracting the coefficient m for each execution cycle is output to each valve of the air conditioner A (step 134), and the process proceeds to step 114.

If it is determined in step 106 that the activation control flag F3 = 1, a1 '
A1 ′ is the value obtained by adding the coefficient m to b1 ′, b1 ′ is the value obtained by adding the coefficient m to b1 ′, and c1 ′ is the value obtained by adding the coefficient m to c1 ′ (step 135), and the processing proceeds to step 114.
As a result, the opening to which the coefficient m is added for each execution cycle is output to each valve.

However, the output value does not exceed the valve opening value (a2, b2, c2) of the air conditioner B (s
step115, step118, step120, st
ep123, step125, step128).

Then, when all of a1 ', b1' and c1 'coincide with the valve opening value of the air conditioner B (step 12).
9), “0” is set to the startup control flag F3 (st
ep133).

On the other hand, if it is determined in step 103 that the air conditioner A is not operating, it is determined whether or not there is an operation command for the air conditioner A (step 13).
6). If it is determined in step 136 that there is an operation command for the air conditioner A, “1” is set in the activation control flag F3, and “0” is set in a1 ′, b1 ′, and c1 ′ (step 138). .

Then, an operation command for the air conditioner A is output (step 139), and the process proceeds to step 114.
Also, in step 136, when it is determined that there is no operation command of the air conditioner A, the heating valve of the air conditioner A,
"0" is output to the cold water valve and the humidification valve (s
(steps 140 to 142), and the control shifts to the control of the air conditioner B.

According to the air conditioning control system of the present embodiment, even when one air conditioner is additionally operated, the amount of heat supplied to the air conditioner to be operated can be gradually increased. As a result, the temperature (humidity) of the area gradually increases (decreases) due to an increase in the amount of supplied heat, but the normal temperature control (humidity control) corresponding to the temperature immediately responds, and the remaining air conditioners in operation Since the amount of heat supplied to is reduced, there is no significant rise (decrease) in temperature (humidity).

Therefore, according to the air-conditioning control system of the present embodiment, an air-conditioning control device which does not cause a temporary large temperature rise (decrease) even when the number of operating air conditioners is increased. Can be provided. <Third Embodiment> The difference between the air-conditioning control system of the present embodiment and the air-conditioning control system of the first embodiment is the operation of the temperature control unit and the humidity control unit. Note that the operation of the air conditioning control device is the same as the operation described in the first embodiment or the second embodiment.

That is, in the temperature control unit and the humidity control unit according to the first embodiment, the change amount α calculated from the measured temperature (humidity) value and the set temperature (humidity) value is calculated based on the previous valve opening degree. By adding to the output value MV ', the output value of the current valve opening output value MV has been calculated.

In the present embodiment, when the air conditioner has failed, the previous valve opening output value MV 'is doubled to compensate for the amount of heat supplied to the area by the failed air conditioner. Perform processing. As a result, the MV is doubled, and thereafter, the optimum MV is calculated by the automatic calculation of α.

FIG. 8 is a flowchart for explaining the operation of the temperature control unit and the humidity control unit of the air-conditioning control system according to the third embodiment of the present invention. As shown in the figure, first, the air conditioner A is operating or the air conditioner B
It is determined whether or not the vehicle is driving (step 20).
1).

If it is determined in step 201 that the air conditioner A or the air conditioner B is operating, then,
It is determined whether the operation of the air conditioner A has stopped and whether or not it has failed (step 202).

If it is determined in step 202 that the operation of the air conditioner A has stopped and that it has failed, the previous valve opening output value MV 'is doubled (step 20).
3), a valve opening value calculation is performed (step 204).

On the other hand, in step 202, the air conditioner A
If the operation is stopped and it is determined that there is no failure, the operation of the air conditioner B is stopped and it is determined whether or not the air conditioner B has failed (step 205).

If it is determined in step 205 that the operation of the air conditioner B has stopped and that it has failed, the previous valve opening output value MV 'of the air conditioner B is doubled (s
Step 203), a valve opening value calculation is performed (step 203).
204).

Then, the valve opening value MV calculated in step 204 is output as a valve opening output value MV '(step 206). On the other hand, if it is determined in step 201 that the air conditioner A or the air conditioner B is not operating, “0” is set to the current valve opening value MV (step 207), and the process proceeds to step 206.

According to the control of the present embodiment, the valve opening value is simply doubled. Therefore, depending on the characteristics of the air conditioner and the reaction speed of the valve, the supply of the valve completely before the failure stops. Although the same value as the calorific value cannot be compensated for, the calorific value can be compensated for substantially the same. When there are three or more air conditioners, a multiple may be determined according to the number of air conditioners.

Therefore, according to the air-conditioning control system of the present embodiment, even when the air conditioner is suddenly stopped due to a failure, the amount of heat supplied does not greatly change. (Humidity) rise and fall can be prevented.

[0106]

As described above in detail, according to the present invention,
It is possible to provide an air conditioning control system capable of suppressing a temperature decrease (increase) that occurs when the number of operating air conditioners changes.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an air conditioning control device in an air conditioning control system according to a first embodiment of the present invention.

FIG. 2 is a flowchart showing an operation of a temperature control unit of the air conditioning control system according to the first embodiment.

FIG. 3 is a flowchart for explaining the operation of an air conditioner control auxiliary processing unit of the air conditioning control device in the air conditioning control system according to the first embodiment.

FIG. 4 is a flowchart for explaining an operation of an air conditioner control auxiliary processing unit of the air conditioning control device in the air conditioning control system according to the first embodiment.

FIG. 5 is a flowchart for explaining the operation of an air conditioner control auxiliary processing unit of the air conditioning control device in the air conditioning control system according to the first embodiment.

FIG. 6 is a flowchart for explaining an operation of an air conditioner control auxiliary processing unit of the air conditioning control device in the air conditioning control system according to the second embodiment.

FIG. 7 is a flowchart for explaining an operation of an air conditioner control auxiliary processing unit of the air conditioning control device in the air conditioning control system according to the second embodiment.

FIG. 8 is a flowchart for explaining the operation of a temperature control unit (humidity control unit) of an air conditioning control device in an air conditioning control system according to a third embodiment of the present invention.

FIG. 9 is a diagram showing a conventional air conditioning control system.

FIG. 10 is a diagram showing a configuration of an air conditioning control device in a conventional air conditioning control system.

FIG. 11 is a flowchart showing an operation of a valve opening distribution processing unit.

FIG. 12 is a diagram showing a temperature change by a conventional air conditioning control system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Humidity temperature sensor, 2 ... Air conditioning control device, 3a, 3b ... Humidification valve, 4a, 4b ... Heating valve, 5a, 5b ... Cold water valve, 11 ... Input processing part, 12 ... Temperature control part, 13 ... Humidity control part , 14: maximum value selection processing unit, 15: control processing unit, 17: output processing unit, 16: valve opening distribution processing unit, 21: input processing unit, 22: temperature control unit, 23: humidity control unit, 24 ... Maximum value selection processing section, 25: air conditioner control auxiliary processing section, 26: output processing section.

Claims (3)

[Claims] 1. A plurality of air conditioners for air-conditioning an area to be air-conditioned, a valve provided for each of the plurality of air conditioners, for adjusting a flow rate of an air-conditioning medium flowing in the corresponding air conditioner; An operating unit control means for inputting the temperature of the target area and controlling the opening degree of the valve corresponding to the operating air conditioner in a direction in which the temperature change is suppressed in accordance with the temperature change; When a stop command is issued, the opening value of the valve corresponding to the air conditioner for which the stop command has been issued is gradually reduced, and when the opening value falls below a predetermined value, the air conditioner for which the stop command has been issued. An air-conditioning control system comprising: 2. A plurality of air conditioners for performing air conditioning of an area to be air-conditioned, a valve provided for each of the plurality of air conditioners, and a valve for adjusting a flow rate of an air conditioning medium flowing in the corresponding air conditioner; Input the temperature of the target area, in the direction of suppressing the temperature change corresponding to the temperature change, and so that the opening degree of each valve corresponding to the operating air conditioner is equal, An operation device control means for controlling the opening of each valve so as to be equal to each other, and when an operation command is issued to the stopped air conditioner, the opening of the valve corresponding to the air conditioner for which the operation command was issued An air conditioner control system comprising: a starter control means for gradually increasing a value. 3. The amount of heat supplied by the failed air conditioner to the area to be air-conditioned, when one of the air conditioners is shut down due to a failure, and the opening value of the valve corresponding to the operating air conditioner is determined. The air-conditioning control system according to claim 1 or 2, further comprising a failure-time control unit that controls the opening value to compensate for (i).