JPH0719562A - Air conditioner - Google Patents

Abstract

PURPOSE:To control a PMV value within a room without being restricted by an installing location of a sensing means by a method wherein the PMV value in a dwelling region is deduced with inputting conditions of a corrected outdoor temperature, a room temperature, a varying amount of the room temperature and a mean radiation temperature, and then a heating or cooling means is controlled in such a manner that the PMV value of dwelling region may become neutral value. CONSTITUTION:There are provided a heating or cooling means 27 for cooling or heating an indoor area, a mean radiation temperature sensing means 19, an indoor temperature sensing means 18, an outdoor temperature sensing means 23, and an outdoor temperature correcting means 24 for divisionally correcting the detected temperature sensed by the outdoor temperature sensing means 23 for its cooling time and its heating time, respectively. The PMV value in a dwelling region is studied in advance by a neuro PMV value calculating means 25, the PMV value in the dwelling region is deducted with the corrected outdoor temperature, the room temperature, a varying amount of the room temperature per unit time and a mean radiation temperature being applied as inputting condition, and then the heating or cooling means 27 is controlled by a heating or cooling PMV value control means 26 in such a manner that the PMV value in the dwelling region may become a neutral value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for automatically controlling an indoor environment so that a occupant can feel comfortable.

[0002]

2. Description of the Related Art A conventional air conditioner is controlled to keep a room temperature within a certain temperature range, but it should be designed so as to keep the sensation of warmth and coolness of a person living therein. In order to realize such comfort, a PMV comfort index has been proposed, and Japanese Patent Application Laid-Open No. 2-178555 and Japanese Patent Application Laid-Open No. 2-2 disclose control of an air conditioner based on this index.
There is one disclosed in Japanese Patent No. 42037.

PMV is translated as an average expected thermal sensation report,
It is one index to evaluate the comfort of thermal environment and was proposed by Professor Whanger of the Technical University of Denmark, 198
It was internationally standardized as ISO-7730 in 4 years. This PMV is a function of temperature, humidity, radiant temperature and air velocity as environmental factors, and activity amount and clothing amount as human body factors, and can be obtained from these values by the formula described in ISO-7730. . And this P
MV value 0 is neutral and comfortable, 3 is hot, 2 is warm, 1 is slightly warm, -3 is cold, -2 is cool,
-1 is defined as a little cool. The description of the formula and the calculation method will be omitted.

Japanese Patent Application Laid-Open No. 2-178555 discloses that the amount of activity and the amount of clothing that are the factors on the human body side of PMV are input, and the current control status and the evaluation input value of the control amount operator in an ambiguous language are input. The fuzzy set is used to calculate the optimum PMV value, and the air conditioner is controlled using temperature and humidity as control parameters so that the PMV value becomes neutral. Further, in the one disclosed in Japanese Patent Laid-Open No. 2-242037, a detection means for detecting temperature, humidity and radiation temperature is installed in a living area, and a PMV value is set from a setting means for setting air flow velocity, activity amount and clothing amount. This is to calculate and coordinately control various air conditioners by using the temperature as a control parameter so that the PMV value becomes neutral.

[0005]

However, in the conventional method, the air conditioner is controlled by using temperature and humidity as control parameters in order to set the PMV value in the comfortable range.
It takes time for the PMV value to reach the comfortable range.

Further, since the environmental elements in the living area are directly detected, the installation place of the detecting means is restricted and the structure becomes expensive.

The present invention solves the above-mentioned conventional problems, and provides an air conditioner which is not restricted by the installation location of the detection means and which controls the PMV value in the room to be neutral with an inexpensive structure. With the goal.

[0008]

In order to achieve this object, an air conditioner of the present invention provides an air conditioner for cooling or heating the room, an average radiant temperature detecting means for detecting an average radiant temperature, and an indoor temperature. The indoor temperature detecting means for detecting the temperature, the outdoor temperature detecting means for detecting the outdoor temperature, the outdoor temperature correcting means for correcting the temperature detected by the outdoor temperature detecting means during cooling and heating, and the PMV value of the living area. Neuro P that learns in advance by a neural network and infers the PMV value of the living area by using the corrected outdoor temperature, room temperature, the change amount of room temperature per unit time and the average radiation temperature as input conditions.
The MV value calculation means and the residential area PMV value are neutral (PMV value =
A PMV value cooling / heating control means for controlling the cooling / heating means so as to be 0) is provided.

A neuroradiation temperature inference means for preliminarily learning the average radiant temperature in the living area by a neural network and inferring the average radiant temperature in the living area from the room temperature and the amount of change in room temperature per unit time and the corrected outside temperature. I have it.

[0010]

According to the present invention, with the above-described configuration, the room temperature, the change amount of the room temperature per unit time, the radiation temperature, and the outside temperature that can be detected by the air conditioner body are input, and the PMV value of the living area is learned in advance by the neural network. Therefore, the PMV value of the living area can be obtained with an inexpensive configuration without being restricted by the place where the detecting means is installed.

Further, since the outdoor detected temperature is corrected by the outdoor detected temperature correction means, a correct outdoor temperature can be obtained and the inferred PMV value becomes accurate.

Further, since the average radiation temperature of the living area is preliminarily learned and inferred from the room temperature, the change amount of the room temperature per unit time, and the outside temperature which can be detected by the air conditioner main body, the structure is inexpensive. The average radiation temperature in the living area can be calculated with.

[0013]

【Example】

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic configuration diagram of an air conditioner. In FIG. 1, 1 is a compressor, 2 is a four-way valve, 3 is an indoor heat exchanger that is a heat exchange means for heating or cooling the intake air in the room, 4 is a pressure reducer, and 5 is an outdoor heat exchanger. To form a refrigeration cycle. Reference numeral 6 is an indoor blower that takes in indoor air and blows out air heated or cooled by the indoor heat exchanger 3, and 7 is an outdoor blower. Reference numeral 8 is an indoor unit installed indoors, and 9 is an outdoor unit installed outdoors. Switching between the cooling operation and the heating operation is performed by switching the four-way valve 2 to switch the flow of the refrigerant in the refrigeration cycle.

FIG. 2 is one of the indoor units 8 and is a schematic view of a cassette type embedded in the ceiling. 10a, 10b, 10c,
Reference numeral 10d designates air outlets provided in four directions, each of which is provided with electric louvers 11a, 11b, 11c, 11d for changing the wind direction up and down as wind direction changing means. The electric louvers 11a, 11b, 11c, 11d are driven by a stepping motor or the like, and the angle of the louvers can be arbitrarily determined.

In this embodiment, the explanation of the stepping motor and the transmission mechanism will be omitted. Reference numeral 12 is a suction port for indoor air, and 13 is a filter for removing dust and particles in the air. The indoor heat exchanger 3 has a substantially cylindrical shape so that heat can be exchanged in four directions, and the indoor blower 6 is a turbo fan 1.
4 and an induction motor 15. 1
Reference numeral 6 is a heat insulating wall that separates intake air and blown air.

FIG. 3 is a flow chart of air in the vicinity of one outlet 10a. As shown in the figure, the blowing direction is determined by the angle θ with the horizontal direction of the louver.

FIG. 4 is a functional block diagram of this embodiment.
Reference numeral 17 denotes a neuro state detecting means, which is an indoor temperature detecting means 18 installed at the suction port 12 of the indoor unit 8, an average radiant temperature detecting means 19, a wind speed determining means 20 of the indoor blower 6, and an activity amount setting set by the resident himself / herself. It comprises means 21 and clothing amount setting means 22. The indoor temperature detecting means 18, the average radiant temperature detecting means 19, and the wind speed determining means 20 are installed in the main body of the indoor unit 6 and are not restricted by the installation location. Reference numeral 24 denotes an outdoor temperature correction unit that corrects the outside air temperature detected by the outdoor temperature detection unit 23 during cooling and heating, and is installed in the outdoor unit 9.

Reference numeral 25 is a neuro PMV value calculating means for inferring the PMV value of the living area from the input of the neuro state detecting means 17 and the outside air temperature obtained by the outdoor temperature correcting means 24. The neuro PMV value calculation means 25 expresses a result learned in advance by a neural network by the inventor based on a large number of experimental data.

Reference numeral 26 is a cooling / heating PMV value control means, which controls the PMV in the living area by using the cooling / heating means 27.

Tables 1 and 2 show examples of control of each controlled object based on PMV values during cooling operation and heating operation.

[0022]

[Table 1]

[0023]

[Table 2]

In the comfortable state during the cooling operation, the cooled air is blown out in a substantially horizontal direction (15 degrees) to spread the cold air throughout the room, and in the comfortable state during the heating operation, the heated air is moved in the substantially vertical direction (75 degrees). To warm the room from your feet.

An operation example of the air conditioner having the above configuration will be described with reference to the drawings. FIG. 5 is a timing chart showing an operation example during the cooling operation, where the solid line is the present embodiment and the dotted line is the conventional operation example. In this embodiment, PMV is set at the start of operation.
If the value is 2 or more (warm), the electric louvers 11a, 1
Swing 1b, 11c, 11d blows out cooled air to all living areas (air velocity 0.4m /
s). For this reason, cold air spreads throughout the room, and the PMV value in the room quickly drops to reach a PMV value of 1 or less. PM
When the V value becomes 0.5 or less, the swing of the electric louver is stopped and the electric louver angle is fixed at 15 degrees. At this time, the PMV value in the living area gradually decreases, but reaches the comfortable area and stabilizes. As described above, it takes about 25 minutes to reach the comfortable area in the past, but in the present embodiment, it reaches within 15 minutes.

FIG. 6 is a timing chart showing an operation example during the heating operation. At the start of operation, the PMV value is −2 or less (cool), and the electric louvers 11a, 11b, 11
The heated air is blown out with c and 11d in the substantially vertical direction (75 degrees) to raise the temperature of the floor surface and warm the foot temperature. At this time, the PMV value in the residential area rises as usual. When the PMV value becomes a little cool (PMV value -1),
Swing the electric louver to spread heated air throughout the room. At this time, the PMV value rises sharply and quickly reaches the comfort zone. When the PMV value becomes -0.5 or more, the swing of the electric louver is stopped and the angle of the electric louver is fixed at 75 degrees. At this time, the PMV value in the living area rises slowly, but reaches the comfortable area and stabilizes. As described above, it takes about 25 minutes to reach the comfortable area in the past, but it reaches within 20 in the present embodiment.

Next, the correction value of the outdoor temperature correction means 23 will be described. 7 and 8 show the temperature change of the outside air temperature and the time change of the outdoor detected temperature and the outdoor temperature correction value, respectively during cooling and during heating.

During cooling, during operation of the compressor 1, the outdoor detected temperature rises to a certain temperature and becomes constant at a certain value. When the compressor 1 stops, the outdoor detected temperature approaches the outdoor air temperature due to heat exchange with the outdoor air. The manner of this change does not depend on the installation conditions in which the outdoor unit 9 is placed. Therefore, the outdoor detected temperature correction value by the outdoor temperature correction means 23 is (maximum temperature when the compressor 1 is operating−minimum temperature when the compressor 1 is stopped) / 2.

During heating, during the operation of the compressor 1, the thermal effect of the heat exchanger is greater than the thermal effect of the compressor, and the detected temperature outside the room drops. When the temperature drop drops to a certain temperature, it does not drop further and levelens. When the compressor 1 stops, the outdoor detection temperature rises due to the heat of the compressor 1. This change also does not depend on the installation conditions. Therefore, the detected temperature is detected only when the compressor 1 is operating during the stable operation period, and is not detected when the compressor 1 is stopped. During the heating operation, when the compressor 1 is in the operating state, the outdoor heat exchanger 5 influences the temperature to reach the minimum temperature about one minute after the start of the operation, and then the plateau level. Therefore, only the temperature of this crawl state is detected. The detection is stopped when the compressor 1 is stopped, and the last value detected during the operation of the compressor 1 is set as the outdoor temperature correction value until the next operation of the compressor 1 thereafter.

As described above, in the present embodiment, even when the outdoor temperature detecting means 22 is installed in the outdoor unit 9, the outdoor temperature correcting means 23 can detect the correct outdoor temperature, so that it is inferred by the neural network. The accuracy of the PMV value is improved.

As described above, according to the present embodiment, the indoor temperature detecting means 18, the average radiant temperature detecting means 19, and the wind speed determining means 20 are installed in the main body of the indoor unit 19, and the input of the neuro state detecting means 17 and the outdoor temperature. Since the PMV value calculating means for inferring the PMV value of the living area from the outside temperature obtained by the correcting means 23 is provided, the PMV value is inferred without directly detecting the environmental elements of the living area. Since the PMV value of the living area is inferred without the need for installing the detecting means in the living area, it is not necessary to install the detecting means in the living area and thus the cost can be reduced. Further, since the outdoor detected temperature is corrected by the outdoor detected temperature correction means, a more accurate PMV value can be obtained.

(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.

FIG. 9 is a functional block diagram of this embodiment.
Reference numeral 28 denotes a neuron average radiation temperature estimating means, which is obtained by the indoor temperature detecting means 18 installed at the suction port 12 of the indoor unit 8, the outdoor temperature detecting means 23 and the outdoor temperature correcting means 24 installed at the outdoor unit 9, It is a neuron average radiation temperature detecting means for preliminarily learning and inferring the relationship between the room temperature and the change amount of the room temperature per unit time, and the average radiation temperature from the outside temperature using a neural network. Neuro average radiation temperature detection means 2
8 represents a result of the inventor's learning with a neural network in advance based on a large amount of experimental data. The description of the same configuration as in FIG. 4 will be omitted below.

As described above, according to this embodiment, the indoor temperature detecting means 18 and the wind speed determining means 20 are installed in the main body of the indoor unit 6, and the room temperature and the change amount of the room temperature per unit time, the outside air temperature to the average radiation temperature are measured. The PMV value of the living area can be inferred with an inexpensive configuration by including the neuro mean radiation temperature detecting means 27 that preliminarily learns and infers the relationship between and with the neural network.

[0035]

As described above, the air conditioner of the present invention comprises the cooling / heating means for cooling or heating the room, the average radiant temperature detecting means for detecting the average radiant temperature, and the indoor temperature detecting means for detecting the indoor temperature. , Outdoor temperature detecting means for detecting the outdoor temperature, outdoor temperature correcting means for correcting the temperature detected by the outdoor temperature detecting means separately during cooling and heating, and the PMV value of the living area is learned in advance by a neural network, PM of living area with corrected outdoor temperature, room temperature, change amount of room temperature per unit time and average radiation temperature as input conditions
Neuro PMV value calculation means for inferring V value and residential area P
P for controlling the cooling / heating means so that the MV value becomes neutral
Since the MV value cooling / heating control means is provided, the PMV value in the living area can be neutralized without being restricted by the installation location of the detection means.

Further, a neuron average radiation temperature inference means for learning the average radiation temperature of the living area in advance by a neural network and inferring the average radiation temperature of the living area from the room temperature and the change amount of the room temperature per unit time and the corrected outside temperature. Therefore, the PMV value of the living area can be obtained with an inexpensive configuration.

[Brief description of drawings]

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

FIG. 2 (a) is an upper sectional view of a schematic view of the cassette type indoor unit of the embodiment. (B) is a lateral sectional view of a schematic view of the cassette type indoor unit of the embodiment.

FIG. 3 is a schematic sectional view of an essential part showing the flow of air in the vicinity of the outlet of the embodiment.

FIG. 4 is a functional block diagram of the air conditioner in the embodiment.

FIG. 5 is a timing chart showing an operation example during a cooling operation in the embodiment.

FIG. 6 is a timing chart showing an operation example during a heating operation in the embodiment.

FIG. 7 is a timing chart showing changes with time of the outside air temperature, the detected temperature, and the outdoor temperature correction value during the cooling operation in the embodiment.

FIG. 8 is a timing chart showing changes with time of the outside air temperature, the detected temperature, and the outdoor temperature correction value during the cooling operation in the embodiment.

FIG. 9 is a functional block diagram of an air conditioner according to a second embodiment of the present invention.

[Explanation of symbols]

3 heat exchange means 6 indoor blower 11a, 11b, 11c, 11d wind direction changing means (electric louver) 24 outdoor temperature correction means 25 neuro PMV value calculation means 26 cooling / heating PMV value control means 28 neuro average radiation temperature inference means

Front Page Continuation (72) Inventor Yasuhiro Tsujii 3-22 Takaida Hondori, Higashi-Osaka City, Osaka Prefecture Matsushita Refrigerator Co., Ltd. In the company

Claims (2)

[Claims] 1. A cooling / heating means for cooling or heating the interior of the room, an average radiant temperature detecting means for detecting an average radiant temperature,
An indoor temperature detecting means for detecting the indoor temperature, an outdoor temperature detecting means for detecting the outdoor temperature, an outdoor temperature correcting means for correcting the temperature detected by the outdoor temperature detecting means during cooling and heating, and a living area Neuro PMV value calculating means for learning PMV values in advance by a neural network and inferring PMV values in a living area by using corrected outdoor temperature, room temperature, change amount of room temperature per unit time and average radiation temperature as input conditions, An air conditioner comprising PMV value cooling / heating control means for controlling the cooling / heating means so that the region PMV value becomes neutral. 2. A neuron average radiation temperature inference means for learning the average radiation temperature in the living area in advance by a neural network and inferring the average radiation temperature in the living area from the room temperature and the amount of change in unit time of room temperature and the corrected outside temperature. Claim 1 provided with
Air conditioner described.