JPH05306830A - Air conditioner - Google Patents

Abstract

(57) [Summary] [Object] The present invention, in an air conditioner that controls the indoor environment to a comfortable state with a PMV value, calculates the PMV value without being restricted by the installation location of the detection means, and quickly neutralizes the PMV value. It is an object of the present invention to provide an air conditioner that controls the PMV value in the entire living area even when the PMV value is distributed in the air-conditioned space. A blower 6 that circulates indoor air, a heat exchange unit 3 that heats or cools intake air, and a PMV value calculation unit 25 for each zone that divides a living area into a plurality of zones and calculates the PMV value of each zone. And wind direction air volume changing means 11a and 11b for changing the wind direction and air volume of the blown air corresponding to each zone, and a plurality of wind direction air volume changing means 11a and 11b so that the PMV value of each zone becomes neutral. It is provided with wind direction / air volume change control means 26, 27.

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. A comfort index called PMV has been proposed in order to realize such comfort, and one that controls an air conditioner based on this index is disclosed in Japanese Patent Application Laid-Open No. 2-242037.

PMV (Predicted Mean)
Vote) is translated as an average expected thermal sensation report and is an index for evaluating the comfort of thermal environment. It was proposed by Professor Whanger of the Technical University of Denmark and was published in 1984.
It has been internationally standardized as SO-7730. 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 calculated from these values by the formula described in ISO-7730. .. And this PMV value 0
Is neutral and comfortable, 3 is hot, 2 is warm,
1 is defined as slightly warm, -3 as cold, -2 as cool, and -1 as slightly cool. The description of the formula and the calculation method will be omitted.

The one disclosed in Japanese Patent Laid-Open No. 2-242037 has a detection means for detecting temperature, humidity and radiation temperature in a living area, and PMV value is set from setting means for setting air flow velocity, activity amount and clothing amount. Is calculated, and various air conditioners are cooperatively controlled using the temperature as a control parameter so that the PMV value becomes neutral.

[0005]

However, in the conventional method, since the environmental element in the living area is directly detected, the installation place of the detecting means is restricted and the structure becomes expensive.
Further, as shown in FIG. 10, even if the PMV values are distributed in the air-conditioned space due to differences in radiation temperature and the like, the PMV values are made neutral in all living areas in order to make the PMV values neutral around the detection location. It had the drawback of not being able to.

Further, there is a drawback that air conditioning is performed more than necessary in order to make the PMV value neutral regardless of the zone where people are present and the zone where there is no person in the air-conditioned space.

The present invention is intended to solve the above-mentioned conventional problems. The PMV value is calculated without being restricted by the installation location of the detecting means, the PMV value is quickly controlled to be neutral, and the PMV value is controlled in the air-conditioned space. PMV in all residential areas, even if distributed
It is an object of the present invention to provide an air conditioner in which the value is controlled to be neutral and the PMV value is controlled to be out of neutral so as to prevent unnecessary air conditioning in a zone where there is no person.

[0008]

In order to achieve this object, an air conditioner of the present invention comprises a blower for circulating indoor air, a heat exchange means for heating or cooling intake air, and
Zone-specific PMV value calculating means for dividing the residential area into a plurality of zones and calculating the PMV value of each zone, and wind direction / air volume changing means for changing the wind direction and the air volume of a plurality of blown air corresponding to each zone, respectively. The wind direction air flow rate change control means for controlling the plurality of wind direction air flow rate change means is provided so that the PMV value of the zone becomes neutral.

In addition, PM is generated by a neural network.
It is provided with a neuro PMV value calculating means for learning V value calculation in advance and inferring the PMV value of the living area from the input condition.

Further, a human body detecting means for detecting the presence / absence of a person in each zone, and respective wind direction / air volume changing means are provided so that the PMV value of the zone where the person is present is neutral and the PMV value of the zone where there is no person is not neutral. It is provided with control means for controlling the wind direction and air flow rate corresponding to the human body.

[0011]

According to the present invention, the residential area is divided into a plurality of zones and the PMV value of each zone is individually controlled by the wind direction air flow rate changing means corresponding to each zone according to the above-mentioned structure. Even if it does, the PMV value can be quickly and neutrally controlled in all living areas.

Further, since the PMV value in the living area is preliminarily learned and inferred by the neural network from the limited input conditions that can be detected by the main body of the air conditioner, it is inexpensive without being restricted by the installation location of the detecting means. The PMV value of the living area can be obtained with various configurations.

Since the PMV value in the zone where people are present is controlled to be neutral and the PMV value in the zone where there is no person is to control the wind direction air flow rate changing means so as to be out of neutral, unnecessary air conditioning is not performed. In addition to saving energy, the PMV value in the zone where people are located can be quickly controlled to be neutral.

[0014]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below 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 which 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 sucks 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 an example of the indoor unit 8 and is a schematic view of a cassette type embedded in the ceiling. Reference numerals 10a and 10b are air outlets provided in two directions, and electric louvers 11a and 11b for changing the wind direction up and down and changing the air volume are respectively provided as wind direction air volume changing means (hereinafter, wind direction air volume). The changing means is called an electric louver). The electric louvers 11a and 11b 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 an inlet for indoor air, and 13 is a filter for removing dust and particles in the air. Reference numeral 14 is an induction motor of the indoor blower 6. Reference numeral 15 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 of the louver. In this embodiment, θ
Is 30 degrees, 45 degrees, 60 degrees, and 75 degrees. The amount of blown air is similarly determined by the angle θ. In this embodiment, θ is 30 degrees or more (100%), 25 degrees (about 80 degrees).
%), 20 degrees (about 60%), and 15 degrees (about 40%).

Since there are two outlets, if the air volume on one side is reduced to 50%, the air volume on the other side becomes approximately 150%.
Also, when the air volume is switched and the "strong" notch is present, the total air volume is 20.
m ³ / min, when the "medium" notch is 16m ³ / min,
With a “weak” notch it is 12 m ³ / min.

FIG. 4 is a schematic diagram of zone division according to this embodiment. Reference numeral 16 denotes a room to be air-conditioned, and the zone is divided into two zones according to the two blowing directions of the indoor unit 8.

FIG. 5 is a functional block diagram of this embodiment.
Reference numeral 17 is a first zone state detecting means installed in the living area of the first zone, which is a first zone room temperature detecting means 18, a first zone radiation temperature detecting means 19, a first zone humidity detecting means 20,
It comprises a first zone air flow velocity detecting means 21, a first zone activity amount setting means 22 and a first zone clothing amount setting means 23 which are set by the occupants of the first zone.

24 is a second zone state detecting means for detecting the state of the second zone in the same manner, and 25 is a zone for each zone based on the state information for each zone inputted from the first and second zone state detecting means 17, 24. PM for each zone to calculate PMV value of
It is a V value calculation means.

26 is a first zone according to the PMV value of the first zone.
The first electric louver control means (means wind direction / air volume change control means, hereinafter referred to as electric louver control means) for controlling the angle of the electric louver 11a, 27 is P of the second zone.
It is a second electric louver control means for controlling the angle of the second electric louver 11b according to the MV value, and the first and second electric louver control means 26, 27 are PMVs of the respective zones.
The value is controlled so that it quickly reaches the comfortable area and stabilizes. 28 is a refrigeration cycle control means for controlling the indoor blower 6, the outdoor blower 7, the compressor 1 and the four-way valve 2,
It is also controlled by the PMV value.

An example of the operation of the air conditioner having the above configuration will be described with reference to the drawings by taking heating as an example.

FIG. 6 is a timing chart showing an operation example during the heating operation, where the solid line shows the first zone and the broken line shows the second zone. In this example, the radiation temperature in the second zone is considerably lower than that in the first zone at the start of operation. Therefore, the PMV value in the first zone is -2 (cool), and the PMV value in the second zone is -3 or less (cold).
Becomes

Therefore, the angle θ of the first electric louver 11a
Is controlled to 25 degrees (air volume 80%) and the angle θ of the second electric louver 11b is controlled to 45 degrees (air volume 100%), so that the amount of air blown in the first zone is reduced (8 m ³ /
min), the amount of blown air in the second zone increases (12
m ³ / min). Further, since the angle θ of the second electric louver 11b is 45 degrees, the heated air is blown directly to the living area (air velocity of 0.3 m / s in the living area).

As a result, the PMV value in the second zone rises rapidly. When the difference in radiation temperature is almost eliminated at point A and the PMV values are almost the same, the first electric louver 11
a and the angle θ of the second electric louver 11b are set to 60 degrees to equalize the blowing air volume of the first zone and the blowing air volume of the second zone (10 m ³ / min) and reduce the air flow velocity in the living area ( 0.2 m / s), and the PMV value further increases. When the PMV value becomes -1 at the point B, the air volume switching is set to "medium", both the air volumes are reduced to 8 m ³ / min, and when the PMV value becomes 0 at the point C, the operation of the compressor 1 is stopped and the air volume switching is made ""Weak" and the air volume is 6m
³ / min, and further, the angle θ of the first electric louver 11a and the second electric louver 11b is set to 75 degrees to further reduce the air flow velocity in the living area (0.1 m / s) and warm the room from the feet. Stay comfortable.

As described above, according to this embodiment, the compressor 1
A four-way valve 2, an indoor heat exchanger 3 which is a heat exchange means for heating or cooling the intake air in the room, and a decompressor 4.
A refrigeration cycle configured by connecting an outdoor heat exchanger 5 in an annular shape, an indoor blower 6 that sucks indoor air and blows out air heated or cooled by the indoor heat exchanger 3, an outdoor blower 7, and a ceiling. 2 of cassette type indoor unit 8 to be embedded
Outlets 10a, 10b provided in each direction for blowing out heated or cooled air, and first electric louvers 11a for changing the air flow and changing the air flow as air flow direction air flow rate changing means provided at the respective air blow ports. The electric louver 11b, the zone-specific PMV value calculating means 26 for dividing the living area into two zones according to the blowing direction of the indoor unit 8 and calculating the PMV value of each zone, the first,
The second electric louvers 11a and 11b are set to the PM of each zone.
Since the first and second electric louver control means 26 and 27 for controlling according to the V value are provided, even if the PMV value is distributed in the living area, the PMV value quickly reaches the comfort area in the entire living area. Can be stabilized.

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

FIG. 7 is a functional block diagram of this embodiment.
Regarding the zones, only the first zone is shown. Reference numeral 29 is a first zone neuro state detecting means, which is a suction temperature detecting means 30 installed in the suction port 12 of the indoor unit 8,
Zone radiation temperature detecting means 19, first zone humidity detecting means 20, first zone wind speed determining means 31 of indoor blower 6, first zone wind direction determining means 32 and first zone air volume determining means set by first electric louver 11a. 33, a first zone activity amount setting means 22 and a first zone clothing amount setting means 23 which are set by the resident. The suction temperature detecting means 30, the first zone radiation temperature detecting means 19, the first zone humidity detecting means 20, the first zone wind speed determining means 31, and the first zone wind direction determining means 32 are installed in the main body of the indoor unit 8 and are installed in different locations. Not restricted.

Reference numeral 34 is a first zone neuro state detecting means 2
This is a zone-specific neuro PMV value calculation means for preliminarily learning the relationship between the input of 9 and the PMV value of the residence area by a neural network and inferring the PMV value of the residence area from the input of the first zone neuro state detection means 29. The zone-specific neuro PMV value calculation means 34 expresses a result learned in advance by a neural network by the inventor based on a large number of experimental data. Hereinafter, description of the same configuration as that of FIG. 5 will be omitted.

As described above, according to this embodiment, the suction temperature detecting means 30, the first zone radiation temperature detecting means 19,
The first zone humidity detecting means 20, the first zone wind speed determining means 31, the first zone wind direction determining means 32, and the first zone air volume determining means 33 are installed in the main body of the indoor unit 8, and the input of the first zone neuro state detecting means 29 is performed. By providing the zone-specific neuro PMV value calculation means 34 for deducing the PMV value of the living area from the PMV value without directly detecting the environmental elements of the living area, the PMV value of the living area is detected. It can be constructed inexpensively without the need for installation.

(Embodiment 3) A third embodiment of the present invention will be described below with reference to the drawings.

FIG. 8 is a functional block diagram of this embodiment.
Reference numeral 35 denotes a first zone human body detecting means for detecting the presence / absence of a person in the first zone, which is provided in the first zone state detecting means 17 '. Reference numeral 36 denotes a second zone human body detecting means for detecting the presence / absence of a person in the second zone, which is provided in the second zone state detecting means 24 '. , 37 and 38 control the first and second electric louvers 11a and 11b so that the PMV value in the zone where a person is present is neutral and the PMV value in the zone where there is no person is neutral. It corresponds to the corresponding wind direction / air volume change control means, and is hereinafter referred to as a human body corresponding electric louver control means). The other configurations are the same as those in FIG. 5, and the description thereof will be omitted.

An operation example of the air conditioner having the above configuration will be described with reference to the drawings by taking heating as an example.

FIG. 9 is a timing chart showing an operation example during the heating operation. The solid line shows the first zone where there is no person, and the broken line shows the second zone where there is a person. In this embodiment, the PMV values of the first zone where there is no person and the second zone where there is a person are both −3 or less (cold) at the start of operation.

Therefore, the angle θ of the first electric louver 11a
Is controlled to 25 degrees (air volume 80%) and the angle θ of the second electric louver 11b is controlled to 45 degrees (air volume 100%), so that the amount of air blown in the first zone is reduced (8 m ³ /
min), the amount of blown air in the second zone increases (12
m ³ / min) and the angle θ of the second electric louver 11b
Since the temperature is 45 degrees, heated air is blown directly into the second zone (air velocity in the second zone is 0.3 m / s).

As a result, the PMV value in the second zone rises rapidly. Then, at point D, the PMV value in the second zone is -1.
Then, the air volume switching is set to "medium", and the angle θ between the first electric louver 11a and the second electric louver 11b is controlled to 60 degrees, so that both the blowing air volume in the first zone and the blowing air volume in the second zone are 8 m ³ / Min, and reduce the air flow velocity in the residential area (0.2 m / s). When PMV value of the first zone absent of human at point E becomes -1 to the air volume switch to "weak", dropped airflow to both 6 m ³ / min, further, the first electric louver 11a and the second electric louver 11b The angle θ is set to 75 degrees to further reduce the air flow velocity in the living area (0.1 m / s) and warm the room from the feet to maintain a comfortable state. P in the second zone where people are at point F
When the MV value becomes 0, the operation of the compressor 1 is stopped and the comfortable state is maintained.

As described above, according to this embodiment, the living area is divided into a plurality of zones, and the PMV (Pred) of each zone is divided.
icted Mean Vote) zone-by-zone PMV value calculation means 25, first and second electric louvers 11a and 11b for changing the wind direction and volume of blown air corresponding to each zone, and presence / absence of a person in each zone The first and second electric louvers 11a and 11b so that the PMV value of the first and second human body detecting means 35 and 36 for detecting the PMV value in the zone where the person is present is neutral, and the PMV value of the zone where there is no person is not neutral.
Since it is provided with the human body corresponding wind direction air flow rate change control means (human body corresponding electric louver control means) 37, 38 for controlling the air conditioner, energy saving is achieved without unnecessary air conditioning, and the PMV value is promptly set in the zone where a person is present. Can be neutrally controlled.

Although the first, second and third embodiments have been described above, it is needless to say that the same effect can be obtained by combining the embodiments.

[0041]

As described above, in the air conditioner of the present invention, the blower for circulating the indoor air, the heat exchanging means for heating or cooling the sucked air, and the living area are divided into a plurality of zones. PMV value calculating means for each zone for calculating the PMV value, wind direction air volume changing means for changing the wind direction and the air volume of the plurality of blown air corresponding to each zone, and the plurality of PMV values for each zone so that the PMV value becomes neutral. Since the wind direction air flow rate change control means for controlling the wind direction air flow rate change means is provided, even if the PMV value is distributed in the living area, the PMV value quickly reaches the comfortable area in the whole living area and is stabilized. You can

Further, the air conditioner of the present invention learns the PMV value calculation in advance by the neural network, and infers the PMV value of the living area from the input condition by the neuro P for each zone.
Since the MV value calculating means is provided, the PMV value can be preliminarily learned and inferred by the neural network from the limited input conditions that can be detected by the air conditioner main body, and the location of the detecting means is restricted. Instead, the PMV value can be obtained with an inexpensive configuration.

In the air conditioner of the present invention, the human body detecting means for detecting the presence / absence of a person in each zone, the PMV value of the zone where the person is present is neutral, and the PMV value of the zone where there is no person is neutral. Since it is equipped with a human body-compatible wind direction / air flow rate change control means for controlling each wind direction / air volume change means, energy is saved without unnecessary air conditioning, and the PMV value is swiftly controlled to be neutral in the zone where people are. it can.

[Brief description of drawings]

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

2A is a schematic cross-sectional view of the cassette type indoor unit of FIG. 1; FIG. 2B is a schematic vertical cross-sectional view of the cassette type indoor unit of FIG.

FIG. 3 is a cross-sectional view of essential parts showing the flow of air near the outlet of FIG. 2 (b).

FIG. 4 is a schematic diagram of zone division in the first embodiment of the present invention.

FIG. 5 is a functional block diagram of the same embodiment.

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

FIG. 7 is a functional block diagram of a second embodiment of the present invention.

FIG. 8 is a functional block diagram of a third embodiment of the present invention.

FIG. 9 is a timing chart showing an operation example during a heating operation in the example.

FIG. 10 is a timing chart showing an operation example of a conventional heating operation.

[Explanation of symbols]

3 Heat Exchange Means 6 Blowers 11a, 11b Wind Direction Air Volume Change Means (Electric Louvers) 25 Zone-specific PMV Value Calculation Means 26, 27 Wind Direction Air Volume Change Control Means (Electric Louver Control Means) 34 Zone-wise Neuro PMV Value Calculation Means 35, 36 Human Body Detecting means 37, 38 Human body-specific wind direction change control means

Claims (3)

[Claims] 1. A blower for circulating indoor air, a heat exchange means for heating or cooling intake air, and a PMV value calculating means for each zone for dividing a living area into a plurality of zones and calculating a PMV value of each zone. , Wind direction air flow rate change means for changing the wind direction and air flow rate of a plurality of blown air corresponding to each zone, and wind direction air flow rate change control for controlling the plurality of wind direction air volume change means so that the PMV value of each zone becomes neutral. Air conditioner with means. 2. The air conditioner according to claim 1, further comprising zone-specific neuro PMV value calculating means for preliminarily learning PMV value calculation by a neural network and inferring a PMV value of a living area from an input condition. 3. A human body detecting means for detecting the presence / absence of a person in each zone, and a wind direction / air flow rate changing means for neutralizing the PMV value of the zone where the person is present and for removing the PMV value of the zone where there is no person from the neutral state. The air conditioner according to claim 1, further comprising control means for controlling a wind direction and flow rate corresponding to a human body.