JPH06147599A - Comfort air conditioning control device - Google Patents

Abstract

PURPOSE:To carry out air conditioning control capable of sending breezing (1/f), and incorporating a comfort index which covers the sensibility of heat in a specified range. CONSTITUTION:A wind velocity pattern of 1/f breeze is prepared. There is provided a 1/f breezing arithmetic operation means 4 which outputs the air velocity to an air conditioning device 7. Based on each of measure values for process parameters which affect the sensibility of heat, such as air current velocity and room temperature of the like, a comfort index is calculated with a comfort arithmetic operation means 2. A control variable setting means 3 determines a room temperature setting value which may be included within a specified range. This room temperature setting value control the operation of an air conditioning device 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a comfortable air conditioning control device capable of realizing a dynamic comfortable indoor environment.

[0002]

2. Description of the Related Art Recently, as one of the comfortable air conditioning systems, the characteristic of natural wind is applied to air conditioning, and 1 / f fluctuation air conditioning control that positively utilizes the airflow has been put into practical use.

The subtle fluctuation phenomena of the natural world (the sound of waves on the beach, the breeze of the beach and the plateau, the babbling of the stream etc) and the psychological and physiological phenomena of human beings have a common regularity regarding comfort. Has been accepted in recent theories, and such a fluctuation phenomenon is called 1 / f fluctuation. That is, when the above-mentioned preferable fluctuation phenomena of the natural world are analyzed by frequency and strength, it is found that there is a certain regularity. On the other hand, there are many fluctuation phenomena in the human body (relaxed heart, brain waves etc). Exists,
It is known that the human fluctuation phenomenon has the same regularity as the preferable fluctuation phenomenon in the natural world.

Even a complicated-looking change such as a fluctuation phenomenon in the natural world is decomposed into a fast motion and a slow motion by the free-Er series expansion, and a certain law is established. In order to see the correlation between frequency and strength, when the frequency is plotted on the horizontal axis and the strength is plotted on the vertical axis, a straight line of inverse 45 degrees in which the strength is inversely proportional to the frequency can be drawn. FIG. 4 shows an example in which the wind of 1 / f fluctuation is plotted on a logarithmic scale. As shown in FIG. 4, for example, a wind changing in a cycle of 100 seconds has a strength ten times that of a wind changing in a cycle of 10 seconds.

By using the correlation shown in FIG. 4, it is possible to create a seaside breeze pattern having a 1 / f fluctuation by synthesizing trigonometric functions as shown in FIG. Figure 5
The pattern of the combined wind speed waveform in (b) is a waveform in which the change in the wind speed that comes in a certain cycle is N times (or 1 / N times) the change in the wind speed that is N times (1 / N times). It is made by superimposing 19 pieces. Figure 5
Three waveforms are shown in (a).

Based on the idea that such a feeling of comfort for human beings is "1 / f fluctuation",
f Fluctuation air-conditioning control is performed. In this 1 / f fluctuation air conditioning control, the wind speed change of the seaside breeze is measured and patterned, or a wind speed pattern is created by a method as shown in FIG. 5, and the wind speed pattern is used in the inverter of the air conditioner. By sending it as a rotation speed instruction signal,
The rotation speed of the air conditioner blower is changed. In this way, by supplying air as the most natural wind, we are working to create a dynamic comfortable space.

[0007]

However, it is not always possible to realize a dynamic comfortable space only by supplying air as a wind close to nature by the 1 / f fluctuation air conditioning control. This is because it is important to consider the human thermal sensation of heat and cold when securing an appropriate indoor thermal environment. Variables that affect human thermal sensation, that is, thermal comfort, include air temperature, average radiation temperature, relative humidity, activity amount (internal heat generation amount of the human body), clothing amount, etc., in addition to airflow velocity.

Particularly in the cooling period, the amount of clothing is reduced as compared with the heating period, so that the reaction of the human body becomes sensitive to changes in the indoor temperature (for example, changes in the indoor temperature set value).

The present invention has been made in consideration of the above points, and supplies air-conditioned air as a wind accompanied by a pleasant and nearly natural change in air velocity based on the concept of 1 / f fluctuation. It is an object of the present invention to provide a comfortable air-conditioning control device capable of creating a dynamic comfortable space for humans in consideration of variables that affect human thermal sensation to heat and cold.

[0010]

The present invention creates a wind speed pattern for producing a 1 / f fluctuation wind, and outputs 1 / f fluctuation calculation means for outputting this wind speed pattern to an air conditioner, an air flow speed, a room temperature, And a comfort index calculation unit that calculates a comfort index related to the thermal sensation based on the measured values of process variables that affect the human thermal sensation such as humidity, and the comfort index from the comfort index calculation unit is within a predetermined range. A comfortable air conditioning control device, comprising: a control amount setting means for obtaining an air conditioning control amount set value that falls within the range and outputting the air conditioning control amount set value to the air conditioning device.

[0011]

The 1 / f fluctuation calculation means creates a wind speed pattern of 1 / f fluctuation wind and outputs it to the air conditioner. The comfort index calculation means calculates a comfort index related to the thermal sensation based on each measured value of the process variable, and the control amount setting means obtains an air conditioning control amount set value such that this comfort index falls within a predetermined range, and the air conditioning is performed. Output to the device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are views showing a comfortable air conditioning control device according to the present invention. In FIG. 1, the air conditioner 7 includes an air conditioner 7a that performs air conditioning, and a blower 8 that sends the air that has been air conditioned to a room 9. Further, the air conditioner 7a generally includes an air filter, an air cooler (cooling coil), an air heater (heating coil), and a sprayer (steam spray) for humidifying air. It is designed to be controlled by the steam valve 11a, the hot water valve 11b and the cold water valve 11b.

Further, the room 9 is provided with a thermometer 9a, an average radiation thermometer 9b, a hygrometer 9c, and an air velocity meter 9d. These measuring instruments measure process variables such as room temperature, average radiant temperature, humidity, and air velocity, which affect human thermal sensation.

The thermometer 9a, the average radiation thermometer 9b, and the hygrometer 9c are connected to the PMV calculation means 2 via the DDC 6a. The airflow velocity meter 9d is connected to the average airflow velocity calculation means 5 and the 1 / f fluctuation calculation means 4 via the DDC 6a, and the average airflow velocity calculation means 5 is further connected to the PMV calculation means 2.

Of these, the DDC 6a is a controller (Direct Digital Controller) for directly controlling process variables such as room temperature.
roller). Further, the PMV calculation means 2 calculates a comfort index related to the thermal sensation based on each measured value of a process variable such as room temperature that affects the thermal sensation of human. PMV is an abbreviation for Predicted Mean Vote.

Further, the PMV calculation means 2 calculates an air conditioning control amount set value (room temperature set value or room temperature set value and humidity set value) such that the comfort index calculated by the PMV calculation means 2 falls within a predetermined range. It is connected to the control amount setting means 3, and the control amount setting means 3 is further connected to the DDC 6b having the same configuration as the DDC 6a.

On the other hand, the 1 / f fluctuation calculation means 4 has a 1 / f
Create a wind speed pattern to create a fluctuation wind and use DDC
Output to 6b. A humidity set value can be manually input to the DDC 6b, and the DDC 6b is connected to the blower 9, the steam valve 11a, the hot water valve 11b, and the cold water valve 11c.

Among the above-mentioned components, the PMV calculating means 2, the control amount setting means 3 and the 1 / f fluctuation calculating means 4 constitute the comfortable air conditioning control device 1.

Next, the operation of this embodiment having such a configuration will be described. First, the 1 / f fluctuation calculation means 4 creates a wind speed pattern for creating a 1 / f fluctuation wind,
This wind speed pattern is sent as a rotation speed instruction signal to the invar of the blower 8 via the DDC 6b. Then, the rotation speed of the blower is changed to perform 1 / f fluctuation air conditioning control. During this period, the airflow velocity measured by the airflow velocity meter 9d is 1 /
It is also possible to input to the f fluctuation calculation means 4 and perform 1 / f fluctuation air conditioning control by feedback.

Next, a thermometer 9a, an average radiation thermometer 9b,
Various process variables measured by the hygrometer 9c and the air velocity meter 9d are passed through the DDC 6a, and the PMV calculation means 2
Entered in. In this case, since the airflow velocity measured by the airflow velocity meter 9d fluctuates randomly by the 1 / f fluctuation control, it is input to the PMV calculation unit 2 after being averaged by the average airflow velocity calculation unit 5.

At the same time, factors attributable to human beings, that is, the amount of activity (work amount) according to the indoor use and the amount of clothing for each season are externally input to the PMV calculation means 2. The PMV calculation means 2 calculates a comfort index related to a thermal sensation by a built-in calculation formula.

The comfort index takes a continuous value from -3 to +3 and is expressed as a numerical value according to the following 7-step evaluation scale as a thermal sensation. +3: Heat, +2: Warm, +1: Slightly warm. 0: Neither (comfortable). -1: Somewhat cool, -2: Cool, -3: Cold.

Such a comfort index indicates an average evaluation given to the comfort of the room by a person in the room.

The comfort index calculated by the PMV calculating means 2 is sent to the control amount setting means 3 and the comfort index is within the predetermined comfortable range in the control amount setting means 3 (for example, -0.5 < Comfort index <+0.5) Judged. If the comfort index is out of the comfortable range, P
Using the measured values other than the room temperature input to the MV calculating means 2, a room temperature value such that the comfort index falls within a comfortable range (for example, PMV = 0) is calculated back by the control amount setting means 3,
The value is sent to the DDC 6b as a room temperature set value.

The DDC 6b adjusts the openings of the steam valve 11a, the hot water valve 11b and the cold water valve 11c based on the room temperature set value input from the controlled variable setting means 3 and the humidity set value input in advance.

In this case, the control amount setting means 3 uses the measured values other than the room temperature and the humidity to back-calculate the room temperature and the humidity values such that the comfort index falls within the comfortable range, and set these values at the room temperature. Value and humidity set value as DDC6b
May be output to.

When the room temperature set value or temperature set value is sent to the DDC 6b as described above, there is a process delay until the actual room temperature or humidity reaches each set value. The value change should not be performed until a predetermined time has passed.

Next, the effect of the present invention will be described with reference to FIG. FIG. 3 (a) is a diagram showing changes in the comfort index in the case of the present invention having the 1 / f fluctuation calculation means 4, the comfort index means 2 and the control amount setting means 3, and FIG. 3 (b) is It is a figure which shows the change of the comfort index of the prior art example which has the 1 / f fluctuation calculation means 4, but does not have the comfort index calculation means 2 and the control amount setting means 3.

In FIGS. 3A and 3B, the humidity is set to 5
It was set to 0%, the amount of clothing was set to 0.5 clo, and the amount of activity was set to 1.2 met. As shown in FIG.
In the case of the present invention, it was found that the comfort index always falls within the comfort range. On the other hand, as shown in FIG. 3B, it is understood that the comfort index does not always fall within the comfort range in the case of the conventional example.

Next, FIG. 2 shows a modification of the comfort index calculating means and the control amount setting means. As shown in FIG.
The comfort index calculation means is the PMV calculation means 2 shown in FIG.
It has a back propagation learning unit 11a and a neuro PMV calculation unit 11 having a neural network as a main component.

In addition, in order to learn the comfort index while online, the result of the questionnaire about the comfort level from the resident is transmitted from the setting unit 12 via the changeover switch 11b to the neuro P.
It is input to the MV calculation means 11.

In FIG. 2, the control amount setting means inputs the comfort index from the neuro PMV calculating means 11, calculates the difference from the previous value, and obtains the change amount.
3, the fuzzy control rule table and the membership relationship are set in advance, and based on these, the fuzzy operation unit 14 which obtains the amount of change in the room temperature set value, and the room temperature by adding the amount of change in the room temperature set value to the previous room temperature set value. And an adder 15 for obtaining a set value.

In such a structure, first, the changeover switch 11b is connected to the PMV calculation means 2 side, and the weight initial value at the time of starting the online learning in the neuro PMV calculation means 11 uses the calculation formula in the PMV calculation means 2. Will be studied offline in advance.

Next, the change-over switch 11b is connected to the setting unit 12 side, and the squared error thereof is obtained and inverted from the result of the questionnaire regarding the comfort level input from the setting unit 12 and the output from the neuro PMV calculating means 11. Propagation learning unit 11a
Entered in. As a result, the neuro PMV calculation means 11
The weights between the layers are modified.

The comfort index from the neuro PMV calculating means 11 is then input to the change amount calculating means 13 to calculate the change amount of the comfort index. The comfort index and its change amount are input to the fuzzy calculation unit 14, and the fuzzy calculation unit 1
In 4, the change amount of the room temperature set value such that the comfort index falls within the predetermined range is obtained. Next, the change amount of the room temperature set value is sent to the addition unit 15 and is added to the room temperature set value last time to obtain the room temperature set value.

By using fuzzy arithmetic,
The humidity set value can be obtained as well as the room temperature set value.

[0037]

As described above, according to the present invention,
While controlling the air conditioner based on the 1 / f fluctuation wind speed pattern, the air conditioning control amount set value is obtained so that the comfort index regarding the thermal sensation falls within a predetermined range, and the air conditioning device is operated based on this air conditioning control amount set value. Since it is controlled, it is always 1 / f
The air conditioning control can be performed in a state where the comfort index is within a predetermined range while the fluctuating wind is blown.

[Brief description of drawings]

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

FIG. 2 is a schematic view showing a modified example of a comfortable air conditioning control device.

FIG. 3 is a diagram showing operational effects of the comfortable air conditioning control device according to the present invention in comparison with a conventional example.

FIG. 4 is a diagram for explaining the wind of 1 / f fluctuation.

FIG. 5 is a diagram showing a wind speed pattern of 1 / f fluctuations created by synthesizing trigonometric functions.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Comfort air conditioning control device 2 PMV calculation means 3 Control amount setting means 4 1 / f fluctuation calculation means 6a, 6b DDC 7 Air conditioning device

Claims (2)

[Claims] 1. A wind speed pattern for creating a 1 / f fluctuating wind is created, and this wind speed pattern is output to an air conditioner.
/ F fluctuation calculation means, a comfort index calculation means for calculating a comfort index related to thermal sensation based on measured values of process variables that affect human thermal sensation such as air velocity, room temperature, and humidity, and The air-conditioning control amount set value such that the comfort index from the sex index calculating means falls within a predetermined range, and the air-conditioning control amount setting value is output to the air conditioner. Comfortable air conditioning control device. 2. The comfort air conditioning control device according to claim 1, wherein a neural network is used as the comfort index calculating means.