JP2912754B2 - Air conditioner - Google Patents

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 the indoor environment so that residents are comfortable.

[0002]

2. Description of the Related Art A conventional air conditioner is controlled so as to maintain a room temperature within a certain temperature range. However, it should originally be designed to maintain a comfortable thermal sensation of a person living there. In order to realize such comfort, a comfort index called PMV is proposed, and based on this index, an air conditioner is controlled as disclosed in Japanese Patent Application Laid-Open Nos. 2-178555 and 2-2.
No. 42037 is disclosed. PMV (Pred
(Icted MeanVote) is translated as an average expected thermal sensation report and is one index for evaluating the comfort of a thermal environment. It was proposed by Professor Wanger of the Technical University of Denmark, and was internationally standardized as ISO-7730 in 1984. It is a thing.

[0003] This PMV is a function of temperature, humidity, radiation temperature and air flow velocity which are environmental elements and the amount of activity and clothes which are human body elements.
730. It is assumed that the PMV value 0 is neutral and comfortable, 3 is hot, 2 is warm, 1 is slightly warm, -3 is cold, -2.
Is defined as cool and -1 is defined as slightly cool. The description of the formula and the calculation method is omitted.

Japanese Patent Application Laid-Open No. 2-178555 discloses a fuzzy set representing the amount of activity and the amount of clothing, which are factors on the human body of a PMV, to calculate an optimal PMV value, and adjusts temperature and humidity so that the PMV value becomes neutral. The air conditioner is controlled as a control parameter. Japanese Patent Application Laid-Open No. 2-242037 discloses that a detecting means for detecting temperature, humidity and radiation temperature is installed in a living area, and a PMV value is calculated from a setting means for setting an air velocity, an activity amount and a clothing amount, and a PMV value is calculated. In this case, various air conditioners are cooperatively controlled using temperature as a control parameter so that the air conditioner becomes neutral.

[0005]

However, in the conventional method, the air conditioner is controlled using temperature and humidity as control parameters in order to neutralize the PMV value.
It takes time for the V value to become neutral. Furthermore, even when the PMV value is distributed in the living area, the PMV value is neutralized around one detection location, so that the PMV value cannot be neutralized in the entire living area. .

[0006] The present invention solves the above-mentioned conventional problems, and quickly controls the PMV value to neutral, and even when the PMV value is distributed in the living area, controls the PMV value to neutral in the entire living area. It is an object of the present invention to provide an air conditioner.

[0007]

In order to achieve this object, an air conditioner according to the present invention comprises an indoor blower for circulating indoor air and an air flow for changing the number of revolutions of the indoor blower to change the amount of blown air. Change means and residential areas
For each zone to calculate the PMV value of each zone
PMV value calculation means, a plurality of wind direction changing means for changing the wind direction of the blown air corresponding to each zone, heat exchange means for heating or cooling the suction air, and each zone
Fuzzy air flow change control means for fuzzy controlling the rotation speed of the indoor blower by the air flow rate change means and the wind direction angle by the plurality of wind direction change means so that the PMV value becomes neutral.

[0008]

According to the present invention , a plurality of living areas are provided by the above-described configuration.
Divided into zones, corresponding to the blowing air volume and each zone
Since the wind direction is individually fuzzy controlled,
Neutral in all residential areas even if PMV values are distributed
Can be controlled.

[0009]

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 indoor suction air, 4 is a decompressor, 5 is an outdoor heat exchanger, and Are connected annularly to form a refrigeration cycle. Reference numeral 6 denotes an indoor blower that sucks indoor air and blows out air heated or cooled by the indoor heat exchanger 3, and reference numeral 7 denotes an outdoor blower. 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 shows an example of the indoor unit 8 and is a schematic diagram of a cassette type embedded in a ceiling. 10a, 10
b, 10c, 10d in the outlet of the air provided in the four directions, respectively, that have an electric louver 11a for changing the wind direction in the vertical as the wind direction changing means, 11b, 11c, 11d are provided.

Reference numeral 12 denotes a suction port for indoor air, and reference numeral 13 denotes a filter for removing dirt and dust in the air. The indoor heat exchanger 3 has a substantially cylindrical shape so that heat can be exchanged in four directions. The indoor blower 6 includes a turbo fan 14 and an induction motor 15. Reference numeral 16 denotes a heat insulating wall that separates the suction air and the blowing air.

FIG. 3 is a flow diagram of the air near one outlet 10a. Direction balloon as shown in figure Ru Kima by the angle θ formed by the horizontal louver.

FIG. 4 is a schematic view of the zone division of this embodiment. Reference numeral 28 denotes a room to be air-conditioned, and the zone is defined as a first pair of the outlets 10a and 10b and a second pair of the outlets 10c and 10d among the outlets 10a, 10b, 10c, and 10d of the indoor unit 8 in four directions. A first zone and a second zone are formed respectively.

FIG. 5 is a functional block diagram of the present embodiment.
The first zone side state detecting means located in the occupied zone of the first zone 29, 30 in the second zone side state detecting means located in the occupied zone of the second zone, respectively, at room temperature detecting means 1
8, radiation temperature detecting means 19, humidity detecting means 20, air flow velocity
Detecting means 21 and activity amount setting means 2 set by the resident himself
2. The clothing amount setting means 23. Reference numeral 31 denotes a zone-based PMV value calculation unit that calculates a PMV value for each zone from the status information for each zone input from the first and second zone status detection units 29 and 30.

Reference numeral 32 denotes an electric louver 1 corresponding to the first zone.
A first zone-side electric louver in which 1a and 11b are linked by one motor, and 33 is a second zone-side electric louver in which the electric louvers 11c and 11d corresponding to the second zone are linked by one motor. The motor is constituted by a stepping motor and can change the angle from 15 degrees to 75 degrees in a stepless manner.

Numeral 34 denotes a fuzzy airflow control means, which uses the fuzzy inference from the PMV values of the first and second zones to quickly reach and stabilize the PMV values of the first and second zones in the comfortable region, and the rotation speed of the indoor blower 6. And the control amounts of the angles of the first and second zone-side electric louvers 32, 33 are determined.
25 is a flow rate change means, this control the phase of an indoor blower 6
And phase control means for changing the air volume by
You. In this embodiment, it is assumed that the phase control means 25 can continuously change the rotation speed of the indoor blower 6 from 1800 rpm to 3600 rpm.

The control rules for cooling operation incorporated in the fuzzy airflow control means 34 are as follows. First, a control rule for the number of rotations of the indoor blower will be described. Rule 1: If the first zone is hot with PMV value, and
If the second zone is also hot at the PMV value, increase the rotation speed of the indoor blower 6 greatly (PB). Rule 2: If the first zone is hot with PMV value, and
If the second zone is warm at the PMV value, increase the rotation speed of the indoor blower 6 greatly (PB). Rule 3: If the first zone is warm at the PMV value and the second zone is hot at the PMV value, the indoor blower 6
(PB). Rule 4: If the first zone is warm at the PMV value and the second zone is warm at the PMV value, slightly increase the rotation speed of the indoor blower 6 (PS). Rule 5: If the first zone is warm at the PMV value and the second zone is slightly warm at the PMV value, slightly increase the rotation speed of the indoor blower 6 (PS). Rule 6: If the first zone is slightly warm with PMV value,
If the second zone is warm at the PMV value, slightly increase the rotation speed of the indoor blower 6 (PS). Rule 7: If the first zone is somewhat warm with PMV values,
If the second zone is also slightly warm at the PMV value, the rotation speed of the indoor blower 6 should not be changed much (Z0). Rule 8: If the first zone is somewhat warm with PMV values,
If the second zone is comfortable with the PMV value, lower the rotation speed of the indoor blower 6 slightly (NS). Rule 9: If the first zone is comfortable with the PMV value, and
If the second zone is slightly warm at the PMV value, lower the rotation speed of the indoor blower 6 slightly (NS). Rule 10: If the first zone is comfortable with the PMV value and the second zone is comfortable with the PMV value, the indoor blower 6
(NS). However, the rotation speed of the indoor blower 6 at the start of the cooling operation is 36.
At 00 rpm, the control range is from 1800 rpm to 36
Up to 00 revolutions / minute.

Next, the control rules of the first zone side electric louver 32 during the cooling operation will be described. Rule 1: If the first zone is hot with PMV value, and
If the rotation speed of the indoor blower 6 is high (B), change the angle of the first zone-side electric louver 32 to a small value in the positive direction (P
S). Rule 2: If the first zone is hot with PMV value, and
If the rotation number of the indoor blower 6 is medium (M), change the angle of the first zone side electric louver 32 largely in the positive direction (PB). Rule 3: If the first zone is warm at the PMV value and the rotation speed of the indoor blower 6 is high (B), the first zone
Do not change the angle of the zone side electric louver 32 much (Z
0). Rule 4: If the first zone is warm at the PMV value and the rotation speed of the indoor blower 6 is medium (M), change the angle of the first zone-side electric louver 32 to a small value in the positive direction (PS). Rule 5: If the first zone is somewhat warm with PMV values,
If the rotation speed of the indoor blower 6 is high (B), change the angle of the first zone-side electric louver 32 in the negative direction (NS). Rule 6: If the first zone is slightly warm with PMV value,
And if the rotation speed of the indoor blower 6 is medium (M),
The angle of the first zone side electric louver 32 should not be changed much (Z0). Rule 7: If the first zone is somewhat warm with PMV values,
If the rotational speed of the indoor blower 6 is low (S), change the angle of the first zone-side electric louver 32 in the positive direction (PS). Rule 8: If the first zone is comfortable with the PMV value, and
If the rotation speed of the indoor blower 6 is high (B), change the angle of the first zone-side electric louver 32 to a small value in the negative direction (N
S). Rule 9: If the first zone is comfortable with the PMV value, and
If the rotation speed of the indoor blower 6 is medium (M), change the angle of the first zone-side electric louver 32 to a small value in the negative direction (NS). Rule 10: If the first zone is comfortable with the PMV value and the rotation speed of the indoor blower 6 is low (S), the first zone
Do not change the angle of the zone side electric louver 32 much (Z
0). However, the angles of the first and second zone-side electric louvers 32, 33 at the start of the cooling operation are 45 degrees, and the controllable range is 15 degrees.
Degrees to 45 degrees. The same applies to the control rules of the second zone-side electric louver 33, and a description thereof will be omitted.

On the other hand, the control rules for the heating operation are as follows. First, a control rule for the number of revolutions of the indoor blower 6 will be described. Rule 1: If zone 1 is cold with PMV value, and
If the second zone is also cold at the PMV value, increase the rotation speed of the indoor blower 6 greatly (PB). Rule 2: If the first zone is cold with PMV value, and
If the second zone is cool at the PMV value, increase the rotation speed of the indoor blower 6 greatly (PB). Rule 3: If the first zone is cool at the PMV value and the second zone is cold at the PMV value, the indoor blower 6
(PB). Rule 4: If the first zone is cool at the PMV value and the second zone is cool at the PMV value, slightly increase the rotation speed of the indoor blower 6 (PS). Rule 5: If the first zone is cool at the PMV value and the second zone is slightly cool at the PMV value, increase the rotation speed of the indoor blower 6 slightly (PS). Rule 6: If the first zone is slightly cooler with PMV value,
If the second zone is cool at the PMV value, slightly increase the rotation speed of the indoor blower 6 (PS). Rule 7: If the first zone is slightly cooler with PMV value,
If the second zone is also slightly cooler with the PMV value, the rotation speed of the indoor blower 6 should not be changed much (Z0). Rule 8: If the first zone is slightly cooler with PMV value,
If the second zone is comfortable with the PMV value, lower the rotation speed of the indoor blower 6 slightly (NS). Rule 9: If the first zone is comfortable with the PMV value, and
If the second zone is slightly cooler with the PMV value, lower the rotation speed of the indoor blower 6 slightly (NS). Rule 10: If the first zone is comfortable with the PMV value and the second zone is comfortable with the PMV value, the indoor blower 6
(NS). However, the rotation speed of the indoor blower 6 at the start of the heating operation is 36
At 00 rpm, the control range is from 1800 rpm to 36
Up to 00 revolutions / minute.

Next, the control rules of the first zone side electric louver 32 during the heating operation will be described. Rule 1: If zone 1 is cold with PMV value, and
If the rotation speed of the indoor blower 6 is high (B), change the angle of the first zone-side electric louver 32 to a small value in the negative direction (N
S). Rule 2: If the first zone is cold with PMV value, and
If the rotation speed of the indoor blower 6 is medium (M), change the angle of the first zone side electric louver 32 largely in the negative direction (NB). Rule 3: If the first zone is cool at the PMV value and the rotation speed of the indoor blower 6 is high (B), the first zone
Do not change the angle of the zone side electric louver 32 much (Z
0). Rule 4: If the first zone is cool at the PMV value and the rotation speed of the indoor blower 6 is medium (M), change the angle of the first zone side electric louver 32 in the negative direction (NS). Rule 5: If the first zone is slightly cooler with PMV value,
If the rotation speed of the indoor blower 6 is high (B), change the angle of the first zone-side electric louver 32 in the positive direction (PS). Rule 6: If the first zone is slightly cooler with PMV value,
And if the rotation speed of the indoor blower 6 is medium (M),
The angle of the first zone side electric louver 32 should not be changed much (Z0). Rule 7: If the first zone is slightly cooler with PMV value,
If the rotational speed of the indoor blower 6 is low (S), the angle of the first zone-side electric louver 32 is changed to a small value in the negative direction (NS). Rule 8: If the first zone is comfortable with the PMV value, and
If the rotation speed of the indoor blower 6 is high (B), change the angle of the first zone-side electric louver 32 to a small value in the positive direction (P
S). Rule 9: If the first zone is comfortable with the PMV value, and
If the number of rotations of the indoor blower 6 is medium (M), change the angle of the first zone side electric louver 32 to a small value in the positive direction (PS). Rule 10: If the first zone is comfortable with the PMV value and the rotation speed of the indoor blower 6 is low (S), the first zone
Do not change the angle of the zone side electric louver 32 much (Z
0). However, the angles of the first and second zone-side electric louvers 32 and 33 at the start of the heating operation are 45 degrees, and the controllable range is 45 degrees.
Degrees to 75 degrees. The same applies to the control rules of the second zone-side electric louver 33, and a description thereof will be omitted.

The language data includes the number of revolutions of the indoor blower 6 and the first and second zone sides for quickly reaching and stabilizing the PMV value obtained by the inventor from a number of experimental data and empirical rules. This is a control rule of the electric louvers 32, 33. This is calculated for each zone for cooling operation and heating operation.
In terms of the relationship between the MV value and the number of rotations of the indoor blower (Table 1),
(Table 2), (Table 3), (Table 4), (Table 5), and (Table 6) .

[0023]

[Table 1]

[0024]

[Table 2]

[0025]

[Table 3]

[0026]

[Table 4]

[0027]

[Table 5]

[0028]

[Table 6]

(Table 1), (Table 2), and (Table 3) respectively show a control amount of the rotation number of the indoor blower 6 during the cooling operation, a control amount of the angle of the first zone side electric louver 32, and a second zone side. It shows a rule of the control amount of the angle of the electric louver 33. Further, (Table 4), (Table 5), and (Table 6) respectively show the control amount of the rotation speed of the indoor blower 6 during the heating operation, the control amount of the angle of the first zone-side electric louver 32, and the second zone-side electric motor. This shows a rule for controlling the angle of the louver 33.

FIG. 6 shows a membership function of the fuzzy variables in the cooling operation, that is, the PMV value, the number of rotations of the indoor blower 6 and the control amount thereof, and the control amounts of the angles of the first and second zone-side electric louvers 32, 33. FIG. 7 shows a membership function of each fuzzy variable in the heating operation. The control amount of the rotation speed of the indoor blower 6 based on the membership function and the first and second zone-side electric louvers 32, 33
The control amount of the angle is determined using a MAX-MIN combination method, which is one method of fuzzy control. The description of the MAX-MIN synthesis method is omitted.

As described above, in the present embodiment , the compressor 1
Two-way valve 2 and heat for heating or cooling the suction air in the room
The indoor heat exchanger 3, the decompressor 4, and the outdoor heat
Refrigeration cycle constituted by connecting the exchanger 5 in a ring shape
Inhalation of indoor air and heating by indoor heat exchanger 3
Or chilled air to circulate indoor air
Blowing by changing the rotation speed of the indoor blower 6 and the indoor blower 6
Phase control means (air flow changing means)
Step 25), outdoor blower 7, and living area
Zone that divides into two zones and calculates the PMV value of each zone
Per-plane PMV value calculating means 31 and a cassette to be embedded in the ceiling
G is provided in four directions of the indoor unit 8 and is heated or cooled.
Outlets 10a, 10 for blowing air into the first zone
b, outlets 10c, 10d for blowing out to the second zone
And the wind of the blown air provided at each outlet
Electric louvers 11a, 11b, 11 for changing the direction up and down
c, 11d, PMV value of each zone will be neutral
As described above, the indoor control is performed by the phase control means (air volume changing means) 25.
The number of rotations of the blower 6 and the electric louver 1 corresponding to the first zone
1st zone side where 1a and 11b are linked by one motor
Electric louver 32, electric louver 11 corresponding to the second zone
c and 11d are linked by a single motor.
Fuzzy fuzzy control of wind direction angle by moving louver 33
I are those in which a stream change control means 3 4, based on a number of experimental data and the inventors of heuristics, and fuzzy control the rotational speed of the indoor fan 6 from the 1, PMV value of the second zone, In addition, since the angle of each electric louver is fuzzy controlled based on each PMV value and the rotation speed of the indoor blower 6, the PMV values of the first and second zones can quickly reach the comfortable region and can be stabilized. Even if the PMV values are distributed in the residential area, the PMV values in a wide area can be made neutral.

In this embodiment, the input conditions are the first and second input conditions.
Although the PMV value of the zone and the number of revolutions of the indoor blower 6 are used, a similar effect can be obtained by further adding a change amount of each PMV value per unit time.

[0033]

As described above, the air conditioner of the present invention comprises an indoor blower for circulating indoor air, air flow changing means for changing the rotation speed of the indoor blower to change the air flow of the blown air, and Divided into multiple zones and P
A zone-based PMV value calculating means for calculating an MV value;
A plurality of wind direction changing means for changing the wind direction of the blown air in accordance with the zone, a heat exchange means for heating or cooling the suction air, and the air flow changing so that the PMV value of each zone becomes neutral. the rotational speed of the indoor blower and by means double
Off for fuzzy control air direction angle by the number of the wind direction changing means
Since those having a Ajii airflow change control means, P
Even if the MV value is distributed in the residential area, the PMV value is
Can be controlled neutrally.

[Brief description of the drawings]

FIG. 1 is a refrigeration cycle diagram of an air conditioner according to an embodiment of the present invention.

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

FIG. 3 is a schematic cross-sectional view of a main part showing the flow of air near the outlet of the cassette type indoor unit of the embodiment.

FIG. 4 is a schematic diagram showing zone division in the embodiment.

FIG. 5 is a functional block diagram in the embodiment.

FIG. 6A is a characteristic diagram showing a membership function with respect to a PMV value during a cooling operation in the embodiment. FIG. 6B is a graph showing a membership function with respect to a control amount of the number of revolutions of the indoor blower during the cooling operation in the embodiment. Characteristic diagram (c) A characteristic diagram showing a membership function with respect to the rotation speed of the indoor blower during the cooling operation in the embodiment. (D) A membership function with respect to the control amount of the angle of the electric louver during the cooling operation in the embodiment. Characteristic diagram

FIG. 7A is a characteristic diagram showing a membership function with respect to a PMV value during a heating operation in the embodiment. FIG. 7B is a graph showing a membership function with respect to a control amount of a rotation number of an indoor blower during a heating operation in the embodiment. Characteristic diagram (c) Characteristic diagram showing a membership function with respect to the number of revolutions of the indoor blower during the heating operation in the embodiment (d) Membership function with respect to the control amount of the angle of the electric louver during the heating operation in the embodiment Characteristic diagram

[Explanation of symbols]

3 heat exchange means 6 indoor blower 25 the air flow changing means 31 zones each PMV value calculation unit 32 first wind direction changing means 33 second air direction changing means 34 fuzzy stream changing means

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-3-225144 (JP, A) JP-A-4-1777041 (JP, A) JP-A-4-316945 (JP, A) (58) Field (Int.Cl. ⁶ , DB name) F24F 11/02 F24F 11/053

Claims (1)

(57) [Claims] 1. An indoor blower for circulating indoor air, an air flow changing means for changing the rotation speed of the indoor blower to change the air flow of blown air, and dividing a living area into a plurality of zones.
PMV value meter for each zone that calculates the PMV value of each zone
Calculating means, a plurality of wind direction changing means for changing the wind direction of the blown air corresponding to each zone, heat exchanging means for heating or cooling the suction air, and the PMV value of each zone being neutral. off the wind direction angle by the plurality of air direction changing means and the rotation speed of the indoor fan by airflow change means
An air conditioner including fuzzy airflow change control means for performing fuzzy control.