JPS6045332B2 - Air conditioner control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention generally relates to an air conditioner control device, and more particularly to an air conditioner control device that controls the start time and stop time of an air conditioner.

As is well known, heating and cooling of structures such as buildings is generally performed by driving a central heating and cooling system equipped with an air conditioner having an air conditioning capacity depending on the scale of the building.

Conventionally, in such a central heating and cooling system, a drive device for the air conditioning machines that make up the system is installed, for example, in a building's control room, and an operator controls the room temperature by operating the operating section of the drive device. Adjustments and settings for start time and stop time were being made. By the way, in order to adjust the indoor temperature of the building to a specific target temperature value when the outside air temperature and the pre-cooling heat load of the building are different, the startup time of the air conditioner should be set according to the value of the outside air temperature and the magnitude of the pre-cooling heat load. It is necessary to change it accordingly.

However, in the conventional system with the above-mentioned configuration, the pre-cooling and pre-heating start time of the building is predicted by an operator about the first time every month based on room temperature curve data up to the previous day. determined by the settings.

Furthermore, since the drive stop time of the system is set almost uniformly, not only is the running cost of the air conditioner high and uneconomical, but depending on the temperature conditions, the indoor temperature may need to be adjusted to match the target temperature value. There was a problem in that it was difficult to control the room temperature accurately.
Therefore, the present invention is intended to improve the above-mentioned problems of the conventional technology, and its purpose is to provide an air conditioner control device that can reduce the running cost of an air conditioner and perform highly accurate room temperature control. Our goal is to provide the following.

The features of the present invention for achieving the above object are as shown in FIG. means 103 for determining an actual room temperature gain from the output from the room temperature detection means 101; a first storage means 105 for storing the actual room temperature gain determined by the means 103 for determining the actual room temperature gain; and a predicted room temperature gain in the room. a second storage means 107 for storing the first
, the actual room temperature gain of the previous day and the predicted room temperature gain of the previous day stored in the second storage means 105 and 107, respectively, are inputted, and the calculation is performed based on a formula in which a coefficient indicating the influence of the disturbance in the room, which is the target space, is introduced. a first calculation means 109 for calculating a predicted room temperature gain of E; a target temperature value setting means 111 for setting a target temperature value in the room; and a first calculation means 109 for calculating a predicted room temperature gain of E; The current value set by the temperature value setting means 111. The start time and stop of the air conditioner 115 are determined based on an optimal start/stop calculation formula in which the target room temperature for the day and the predicted room temperature gain for the day stored in the second storage means 107 are input, and a holiday compensation coefficient is introduced. A second calculation means 113 for calculating time. It is in the machine control device.

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

FIG. 1 is a block diagram showing the overall configuration of an air conditioner control device according to an embodiment of the present invention, FIG. 3 is a block diagram 5 of the air conditioner control device according to an embodiment of the present invention, and FIG. 1
5 is a timing chart showing the operation of each part of the configuration shown in the figure. In FIG. 1, reference numeral 3 denotes an input device, and the input device 3 includes an A/4D converter that receives an input analog signal, converts it from analog to digital, and outputs it.

The input device 3 takes in the detected value 0R output from the room temperature detector 1 under the control of the arithmetic control unit 4, performs A/D conversion, and outputs it, and is installed at a location away from the air conditioner control device. It is configured to take in the switching signal output from the air conditioning/heating changeover switch 2 and output it. The power supply circuit 8 receives power from an AC power source, rectifies the power, and supplies power to the air conditioner control device. The program timer 9 is configured to supply a predetermined clock signal for informing the arithmetic and control section 4 of the current time and to selectively set the usage time period of the room, which is the space to be controlled. The storage unit 12 stores control programs, etc.
It also stores necessary data. The data stored in the storage unit 12 includes, for example, the input room temperature detection value θ. The calculation control unit 4 receives data and calculates the calculation based on the calculation formula described later.
There are actually measured room temperature gain data calculated by the controller 4, predicted room temperature i gain data calculated by the calculation control unit 4, and the like. The output device 6 receives a signal output from the arithmetic control section 4 and outputs it to an air conditioner 10, which is a heating and cooling device, or a ventilation device 11. The setting device 5 is configured to be able to selectively set the target room temperature θSPR in the room, which is the target space, under the control of the calculation control unit 4. The calculation control unit 4 performs arithmetic and logical operations and comparison operations.

The calculation control section 4 has the following functions. 1 the room temperature detector 1
0. is input, and the actual room temperature gain of the previous day is determined based on the calculation formula described later.

The predicted room temperature gain for the previous day is calculated from the actual room temperature gain for the previous day obtained in step 21, based on an arithmetic expression described later.

The predicted room temperature gain for the current day is determined based on an arithmetic expression to be described later in which the measured room temperature gain of the previous day determined in step 31 and the predicted room temperature gain of the previous day determined in step 2 are input.

4. The detected value for the day given from the room temperature detector 1 and the target temperature value for the day set by the setting device 5 are calculated in step 3, and then the predicted room temperature gain for the day stored in the storage unit 12 is calculated. The output device 6 calculates the start/stop time of the air conditioner 10 based on the optimum start/stop calculation formula for heating and cooling that is input and will be described later.
A start/stop signal is output to the air conditioner 10 via the air conditioner 10.

The control operation of the above configuration is explained in the block diagram of FIG. 3 and the block diagram of FIG.
This will be explained below using the heating timing chart shown in the figure. The above-mentioned room temperature gain differs depending on the air conditioner used in each building, and is determined through trials over several days and measurement of room temperature trends using a recorder or the like.

The arithmetic control unit 4 calculates the predicted room temperature gain KJ(1+1) for the next day of day i, which is an arbitrary day, using the formula shown below. Here, Kj: Predicted room temperature gain on day i, which is an arbitrary day, gain Kj (1): Actual room temperature gain on day i α: Coefficient set in the range of 0≦α≦1 (1) above.
In the formula, if the indoor space, which is the target space to be precooled, is subject to disturbances such as outside air temperature due to the perimeter of the building, for example, α
= 0.5, and if the room is located inside a building and is hardly affected by the disturbance, the optimal room temperature gain is determined by setting α = 0.8.

After calculating the predicted room temperature gain for the next day on day i using the equation (1) described above, the arithmetic control unit 4 calculates the optimum startup time for heating using the equation (3) based on the equation (2) described below. The optimum start time for cooling is calculated based on the equation (4), the optimum stop time for heating is calculated based on equation (5), and the optimum stop time for cooling is calculated based on equation (5). (Optimum start calculation formula for heating) (Optimum start calculation formula for cooling) (Optimum stop calculation formula for heating) (Optimum stop calculation formula for cooling) Where, Ts: Maximum preheating or precooling time Ts: Maximum stop time TD: Optimum Start delay time Td: Optimal stop delay time K1: Heating start predicted room temperature gain (℃/hour) K2: Cooling start predicted room temperature gain (℃/hour) K3: Heating stop prediction room temperature gain (℃/hour) K4: Cooling stop prediction room temperature gain (°C/hour) θSPR: Indoor target temperature θR: Actual indoor temperature β: Compensation coefficient after holiday This coefficient was introduced in order to set the precooling heat time on Monday longer by that amount.

By the way, among the above-mentioned equations (1) to (5), for example, (1
The calculations performed by the calculation control unit 4 using equations ) to (3) can be shown by the third block diagram described above.

Reference numeral 21 is a block for calculating the predicted room temperature gain for the next day on day i using the above-mentioned formula (1). By subtracting the detected value θR, the value and the above (
This is a block that calculates the optimum heating start time according to the above-mentioned equation (2) using equation (1) and equation (2). The calculation of the optimum heating start time and the calculation of the optimum heating stop time by the calculation control section 4 shown in the block diagram of FIG. 3 mentioned above, and the control operation of the calculation control section 4 based on the calculation results are shown in FIG. Therefore, it is exactly as shown in the figure. The operator operates an indoor temperature setting device (not shown) to set the indoor temperature in the room to be controlled by θ1.
and then time T.

By turning on the switch (not shown) of the power supply circuit 8, the arithmetic control section 4 starts the control operation.
The arithmetic and control unit 4 calculates the θ set by the operator.
1 and the target temperature set value θ3P output from the setting device 5.
R and θ1 outputted from the room temperature detector 1 are sequentially added and stored in the storage unit 12. Then, the above-mentioned equation (1) is successively retrieved from the storage unit 12 to calculate the value of K1, and T2, which is the start time of use of the room serving as the target space.
(preset by program timer 9) and T
. Read the difference value TSl with the above θ$P1 and 01,
The optimal start-up delay time TD is calculated based on the above equation (2), and the time when the drive command signal output to the air conditioner 10 starts is calculated. When recognizing that the time has come, the arithmetic control unit 4 outputs a drive command signal to the air conditioner 10 via the output device 6. Time T from the above-mentioned time, time T after elapsed
At θ 2, the calculation control unit 4 outputs a drive command signal to the ventilation device 11 via the output device 6. Here ventilation device 1
The reason why air conditioner 1 is driven after air conditioner 10 is that air conditioner 1
This is because the efficiency is not good if the ventilation device 11 is driven while the heat supply by the ventilation device 11 is insufficient. As described above, θR detected by the room temperature detector 1 through the control operation shows an increase with a temperature gradient as shown in FIG. 4, and after reaching 03PR at time T2, reaches the set value θ1. reached and becomes constant. After calculating the time T3 which is the TS time set under the light load condition from the heating stop time T5 set in advance by the program timer 9, the calculation control unit 4 calculates the TS and the time stored in the storage unit 12. By reading ER, 0, and PR, calculating the optimal stop delay time Td based on the above equation (4), and adding the value Td to the above T3, the time T is calculated.
, is found. When it is recognized that the time ζ has been reached, the air conditioner 1 is outputted via the output device 6 as shown in FIG. 4 A2.
0 and outputs a drive stop command signal to stop the drive of the air conditioner 10. As a result, θR becomes θ with the temperature gradient as shown in the figure.
It decreases from 1 and coincides with 03PR at the above-mentioned time, and thereafter continues to decline gradually as time passes. When the time T5 is reached, the ventilation device 1 is turned on via the output device 6.
1 to output a drive stop command signal to stop the drive of the ventilation device 11. At the same time, the program timer 9 is stopped for a limited time as shown at A1, and the operation of the arithmetic control section 4 is also stopped. The above-mentioned temperature gradient when the room temperature rises is indicated by K1, which indicates the room temperature gain predicted by equation (1) on the previous day (day i), and the actual room temperature θ1 changes to the target temperature θ, PR at the time when the room is used. will be revised daily to match. The temperature gradient when the room temperature drops is the same as K3 above.
The predicted value on the previous day (day i) and the previous day (day i)
The value calculated based on the above equation (1) from the actually measured temperature value at the time when θR is . The temperature drop gain is predicted to match the target temperature θ, PF&. For example, if the time T5 is not the end of work but the start of a break such as a day off, and the time T5 is the start of the afternoon working hours, the area from the time to the time TlO is the air conditioner 10 for the break time. This figure shows one way to perform control such as stopping the driving of the motor. In this case, the operation of the arithmetic control unit 4 and the ventilation system 11 is continued without stopping at time T5 until TiO, which is the end time, and the air conditioner 10 is operated at time T5! ~ time T, or for program timer 9 from time T7 to time T.
It will be driven up to 9 respectively. By performing such control, substantially the same effect as at time T5 described above can be expected. Further, in one embodiment according to the present invention, not only the control such as temporarily stopping the operation of the air conditioner 10 etc. only during the above-mentioned specific time period but also the temporary restriction of the driving amount of the air conditioner 10 etc. only in a specific zone is provided. It is also effective for control, and has substantially the same effect.
The content explained above is only related to the embodiment according to the present invention, and does not mean that the present invention is limited to the above content only. For example, the break time can be changed from ~T7 to ~T8. It is.

Further, the coefficients α and β used in the above-mentioned arithmetic expressions (1) to (3) do not mean that the various arithmetic methods described above are limited only to these coefficients.
As explained above, according to the present invention, the actual room temperature gain of the previous day and the predicted room temperature gain of the previous day are input, and the predicted room temperature gain of the current day is calculated based on a formula that introduces a coefficient indicating the influence of disturbances in the room that is the target space. The system calculates the start time and stop time of the air conditioner based on the optimal start/stop calculation formula, which inputs the predicted room temperature gain for the day, the actual measured room temperature for the day, and the target room temperature for the day, and introduces the holiday compensation coefficient. Therefore, it is possible to provide an air conditioner control device that can reduce the program timer of the air conditioner and perform highly accurate room temperature control.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the overall configuration of an air conditioner control device according to an embodiment of the present invention, FIG. 2 is a diagram corresponding to claims, and FIG.
The figure is a block diagram of an air conditioner control device according to an embodiment of the present invention, and FIG. 4 is a timing chart showing the operation of each part of the configuration shown in FIG. 1. 1... Room temperature detector, 4... Arithmetic control unit, 5... Setting device, 10... Air conditioner, 1
1... Ventilation device, 12... Memory unit.

Claims (1)

[Claims] 1. An air conditioner that adjusts the room temperature in a room that is a target space, a room temperature detection means that detects the room temperature in the room, a means for determining an actual room temperature gain from an output from the room temperature detection means, and a means for determining the actual room temperature gain. a first storage means for storing the actual measured room temperature gain thus determined; a second storage means for storing the predicted room temperature gain in the room; and the previous day's actual measurement stored in the first and second storage means, respectively. a first calculation means that calculates a predicted room temperature gain for the current day based on a formula that inputs a room temperature gain and a predicted room temperature gain from the previous day and introduces a coefficient indicating the influence of a disturbance into the room serving as the target space; target temperature value setting means for setting a temperature value; and the actual measured room temperature of the day detected by the room temperature detection means, the target room temperature of the day set by the target temperature value setting means, and the second storage means. The startup time of the air conditioner is determined based on the optimal startup/stop calculation formula that inputs the stored predicted room temperature gain for the day and introduces a holiday compensation coefficient.
An air conditioner control device comprising: second calculation means for calculating a stop time.