JPH07145982A - Air-conditioner - Google Patents

Abstract

PURPOSE:To suppress the uncomfortable feeling of a user to a minimum and to produce a power saving effect by a method wherein proper correction is applied on the calculated PMV value of a living area, in an air-conditioner to effect automatic control so that indoor environment is brought into a comfortable state by means of a PMV value. CONSTITUTION:An air-conditioner comprises an energy saving mode selection input means 17, a correction amount output means 18 to output a correction amount based on the input of the energy saving mode section input means 17, a PMV valve correcting means 19 to correct a PMV value, determined by a PMV value computing means 10, by means of a correction amount content decided by the correction amount output means 18, a receiving display means 20 to announce receipt of operation by the energy saving mode selection input means 17 to a user, and a cooling heating means 21 which is controlled so that a PMV value corrected by the PMV value correcting means 19 is stabilized in a range of a comfortable region. Thus, a power saving effect is produced in a range wherein an amenity of a user is not damaged.

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.
No. 42037 is disclosed. PMV (Pred
icted MeanVote) is translated as an average expected thermal sensation report and is an index for evaluating the comfort of a thermal environment. It was proposed by Professor Wanger of the Technical University of Denmark and internationally standardized as ISO-7730 in 1984. It is a thing. This PMV is a function of environmental factors such as temperature, humidity, radiant temperature and air flow velocity, and human body factors such as activity amount and clothing amount.
It can be determined by the formula described in O-7730.
And, assuming that the PMV value of 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 as slightly cool. The description of the formula and the calculation method will be omitted.

According to the technique disclosed in Japanese Patent Laid-Open No. 2-178555, the activity amount and the clothing amount, which are the factors of the human body side of PMV, are expressed by a fuzzy set to calculate an optimum PMV value so that the PMV value becomes neutral. The air conditioner is controlled by using temperature and humidity as control parameters. In addition, Japanese Patent Laid-Open No. 2-2
In the one disclosed in Japanese Patent No. 42037, a detection 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 flow velocity, an amount of activity and an amount of clothes, and the PMV value is Various air conditioners are cooperatively controlled so as to be neutral, and the control target value set in the comfortable range is corrected by the temperature sensation inputs of "hot" and "cold".

[0004]

However, in the conventional method, although the PMV value is set to be neutral,
Since only temperature and humidity are controlled as control parameters, no power saving effect can be obtained. In addition, the user does not know the current PMV value, and since the control target value is corrected by the temperature sensation input, the comfort of the user is impaired by the excessive temperature sensation input, or the air conditioning is performed more than necessary.
It has a drawback that the power consumption becomes large.

The present invention solves the above-mentioned problems of the prior art. By adding an appropriate correction to the calculated PMV value of the living area, the air which brings about a power saving effect while minimizing the discomfort of the user. The purpose is to provide a harmony machine.

[0006]

In order to achieve this object, an air conditioner of the present invention comprises a cooling / heating means for cooling or heating an interior of a room, and a PMV value calculation means for sequentially calculating a PMV value of a living area. Energy saving mode selection input means, correction amount output means for outputting a correction amount based on the input of the energy saving mode selection input means, and PMV value obtained by the PMV value calculation means is determined by the correction amount output means. The PMV value correction means for correcting the correction amount, the reception display means for notifying the user that the operation by the energy saving mode selection input means is received, and the PMV value corrected by the PMV value correction means are in the comfortable area. And cooling and heating control means for controlling the cooling and heating means so as to stabilize within the range.

Further, a wind direction changing means for changing the blown air direction, an air volume changing means for changing the blown air quantity by changing the number of revolutions of the indoor blower, an energy saving mode selecting input means, and the energy saving mode selecting input. An air flow velocity change control unit that controls the wind direction change unit and the air flow amount change unit based on an input from the unit, and a cooling and heating control unit that controls the cooling and heating unit so that the PMV value is in a comfortable region.

[0008]

According to the present invention, the PMV value is corrected and the control based on the corrected PMV value is performed by the above-described structure. Therefore, the power saving effect can be improved within the range where the comfort of the user is not impaired. You can

Further, since the air flow is controlled based on the PMV value of the living area, the PMV value can be set in the comfortable area without operating the compressor unnecessarily, and the power saving effect is improved. You can

[0010]

【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 denotes an indoor blower that sucks indoor air and blows out the air heated or cooled by the indoor heat exchanger 3, which is "strong",
It is possible to set the air volume in three stages, "medium" and "weak". Reference numeral 7 is 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 is a block diagram of the air conditioner of this embodiment. 10 is PM according to the formula described in ISO-7730
It is a PMV value calculation means for calculating and calculating a V value. 11
Is a room temperature detecting means, 12 is a humidity detecting means, and 13 is a radiant temperature detecting means, which are installed at arbitrary locations in the room to detect the state inside the air-conditioned room. 14 is an air flow velocity setting means,
Reference numeral 15 is a user's activity amount setting means, and 16 is a user's clothing amount setting, which is provided on a remote controller 23 (to be described later) installed in the room for the user to operate. Room temperature detection means 11,
The humidity detecting means 12, the radiation temperature detecting means 13, the air flow velocity setting means 14, the activity amount setting means 15, and the clothing amount setting means 16 are input to the PMV value calculation means 10 in order to calculate the PMV value.

Reference numeral 17 denotes an energy saving mode selection input means for selecting an energy saving mode, which is provided in a remote controller 23 described later, and 18
Is PM according to the input in the energy saving mode selection input means 17.
It is a correction amount output means for outputting the correction amount of the V value. Reference numeral 19 is a PMV value correction means for correcting the PMV value calculated by the PMV value calculation means 10 by the correction amount determined by the correction amount output means 18.

Reference numeral 20 is a reception / display means for informing the user whether or not the energy-saving mode selection / input means 17 has been inputted, and is called an energy-saving sign in this embodiment. Reference numeral 21 denotes a cooling / heating means for cooling or heating the room by a refrigeration cycle,
Reference numeral 22 is a cooling / heating control means for controlling the cooling / heating means 21 so that the corrected PMV value becomes stable in the comfortable area.

FIG. 3 is a front view of the remote controller, and 23 is the remote controller main body. Reference numeral 24 is an energy saving key that the user inputs when he / she wants to save power, and 25 is an energy saving sign that lights up in response to the user's input operation of the energy saving key 24. Each time the key is pressed, "lighting" → "lighting off" → It changes to "light". 26
Is an air volume setting key that sets the air volume of the indoor blower 6 to three levels of "strong", "medium", and "weak" (equivalent to air velocities of 0.3, 0.2, and 0.1 m / s, respectively). Each time you press the key, the setting changes from "strong" to "medium" → "weak" to "strong".

Reference numerals 27a, 27b and 27c are air volume display lamps for displaying the air volume settings of "weak", "medium" and "strong", respectively. The air flow rate setting means 14 has an air volume setting key 26.
And air volume indicator lamps 27a, 27b, 27c. 28 is an activity amount setting key for setting the activity amount into three levels of "light", "medium", and "heavy" (equivalent to activity amounts of 1.0, 1.2, and 1.4 met), each time the key is pressed. Change to "light" → "medium" → "heavy" → "light". 29a,
29b and 29c are activity amount display lamps for displaying activity amount settings of "light", "medium" and "heavy", respectively. The activity amount setting means 15 includes an activity amount setting key 28 and an activity amount display lamp 2.
9a, 29b, 29c.

Numeral 30 is a clothing amount setting key for setting the amount of clothing in three stages of "summer clothing", "combined clothing" and "winter clothing" (corresponding to clothing amounts of 0.5, 0.7 and 1.0 clo, respectively). , Every time you press the key, it changes from "summer clothes" to "combined clothes" to "winter clothes" to "summer clothes". 31a, 31b, 31c are "summer clothes",
It is a clothing amount display lamp that displays the clothing amount setting of “combined clothing” and “winter clothing”. The clothing amount setting means 16 is a clothing amount setting key 3
0 and clothing amount display lamps 31a, 31b, 31c. Reference numeral 32 is an operation / stop key for instructing the operation and stop of the cooling / heating means 21.

The operation of the air conditioner having the above structure will be briefly described with reference to the drawings. In the example of Fig. 3, the air volume is set to "strong", the activity amount is "medium", and the clothing amount is "summer clothes".
The PMV value calculated by the V value calculation means 10 is +1.5.
In this case, since the PMV value deviates from the comfort area to the positive side in this state, the cooling / heating means 21 performs the cooling operation, and the PMV value gradually decreases to approach the comfort area.
When entering the comfort zone, the cooling / heating means 21 is turned ON / OFF with a differential PMV value of 0.25 centering around the PMV value = 0.
Let it stabilize.

When the user presses the energy saving key 24, the correction amount output means 18 causes the PMV value +0.25.
Is output to the PMV value correction means 19 and the control target PMV is output.
The value changes from 0 to +0.25, and the cooling / heating means 21 is turned on / off to be stable with the differential PMV value 0.25 centering on the PMV value +0.25. At this time, as compared with the case where the energy saving key 24 is not pressed, the operating rate of the compressor 1 is reduced and the power consumption is suppressed by about 10%. Further, since the PMV value is repeatedly turned on and off within the comfortable area, the user does not feel dissatisfied.

As described above, according to the present embodiment, the cooling / heating means 21 for cooling or heating the room, the PMV value calculation means 10 for sequentially calculating the PMV value of the living area, the energy saving mode selection input means 17, A correction amount output unit 18 for outputting a correction amount based on the input of the energy saving mode selection input unit 17, and a correction amount determined by the correction amount output unit 18 for the PMV value obtained by the PMV value calculation unit 10. The PMV value correcting means 19 for correcting the minute, the acceptance display means 20 for notifying the user that the operation by the energy saving mode selection input means 17 is accepted, and the PMV value corrected by the PMV value correcting means 19 are comfortable. Since it is provided with the cooling / heating control means 22 for controlling the cooling / heating means 21 so as to be stable within the range of the region, the comfort of the user is not impaired. In the range, it is possible to increase the power-saving effect.

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

FIG. 4 is a schematic view of one of the indoor units 8, which is a cassette type embedded in the ceiling. 33a, 33b, 33c,
Reference numeral 33d denotes air outlets provided in four directions, each of which is provided with electric louvers 34a, 34b, 34c, 34d for changing the wind direction up and down as wind direction changing means. The electric louvers 34a, 34b, 34c, 34d are driven by a stepping motor or the like, and the angle of the louvers can be arbitrarily determined from 0 degree to 70 degrees. In this embodiment, the description of the stepping motor and the transmission mechanism will be omitted. Reference numeral 35 is an inlet for indoor air, and 36 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 includes a turbo fan 37 and an induction motor 38. Reference numeral 39 is a heat insulating wall that separates intake air and blown air.

FIG. 5 is a flow chart of air in the vicinity of one outlet 33a. As shown in the figure, the blowing direction is determined by the angle θ with the horizontal direction of the louver.

FIG. 6 is a block diagram of the air conditioner of this embodiment. Reference numeral 40 denotes a living area state detecting means installed in the living area for detecting the state of the living area. The room temperature detecting means 11, the humidity detecting means 12, the radiation temperature detecting means 13 and the air flow velocity detecting means 4 are provided.
It consists of 1. 42 is an air flow velocity change control means, and when the energy saving mode is selected by the energy saving mode selection input means 17, the air volume changing means 43 and the wind direction changing means 34a, 3a.
The air flow velocity in the residential area is changed by 4b, 34c, and 34d. Reference numeral 44 denotes an energy saving mode selectable judging means, which is an air flow rate changing means 43 and a wind direction changing means 34a, 34b, 34c, 34d for controlling the air flow rate by the air flow rate changing control means 42.
It is determined whether or not the power saving effect can be improved by further controlling the power consumption, and if the power saving effect can be increased, a signal is sent to the acceptable display means 45 to inform the user that the energy saving mode can be selected. . Others are Figure 2
It has the same structure as the above and the explanation is omitted.

FIG. 7 is a front view of the remote controller in this embodiment.
Reference numeral 6 is a remote control body. Reference numeral 47 denotes a receivable sign, which is turned off only when the energy-saving mode selectable judging means 44 judges that the energy-saving mode can be received. At that time, when the user presses the energy saving key 24, the acceptable sign 47 is turned on, and the air flow velocity change control unit 42 controls so that the air flow velocity optimal for power saving is obtained. The description of the other components having the same configuration as in FIG.

The air conditioner having the above configuration will be briefly described. FIG. 8 is a timing chart showing an operation example during the cooling operation. The solid line shows an operation example of the operation when the energy saving mode is selected in this embodiment, and the broken line shows an operation example of the normal operation. When the energy saving mode is selected, the electric louvers 34a, 34b, 3
The angles of 4c and 34d are set to 45 degrees, and the cooled air is blown directly into the living area (air velocity 0.5 m / s) to lower the PMV value. Therefore, normal operation (air velocity 0.3m /
The PMV value becomes neutral even in the temperature range about 1 K higher than that in s), the operating rate of the compressor 1 is reduced, and a power saving effect is obtained.

FIG. 9 is a timing chart showing an operation example during the heating operation. The solid line shows an operation example when the energy saving mode is selected in this embodiment, and the broken line shows an operation example during normal operation. When the energy saving mode is selected, the electric louvers 34a, 34b, 34
The angle of c and 34d was blown to 70 degrees, and the PMV was set so that the wind would not directly hit the living area (air velocity 0.1 m / s).
Increase the value. Therefore, normal operation (air velocity 0.3m /
The PMV value becomes neutral even in a temperature range lower by about 0.5 K than that in s), the operating rate of the compressor 1 is reduced, and a power saving effect is obtained.

As described above, according to this embodiment, the wind direction changing means 34a, 34b, 3 for changing the wind direction of the blown air.
4c, 34d, an air volume changing means 38 for changing the air volume of the blown air by changing the rotation speed of the indoor blower 6, an energy saving mode selection input means 17, and the energy saving mode selection input means 17 based on the inputs Wind direction changing means 34
a, 34b, 34c, 34d and the air flow rate changing control means 42 for controlling the air volume changing means 43, and the cooling and heating control means 22 for controlling the cooling and heating means 21 so that the PMV value is in the comfortable range. Unnecessary compressor 1
The PMV value can be set in the comfortable range without driving, and the power saving effect can be improved.

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

[0030]

EFFECTS OF THE INVENTION Based on the inputs of the cooling / heating means for cooling or heating the room, the PMV value calculation means for sequentially calculating the PMV value of the living area, the energy saving mode selection input means, and the energy saving mode selection input means. Correction amount output means for outputting a correction amount, a PMV value correction means for correcting the PMV value obtained by the PMV value calculation means by the correction amount determined by the correction amount output means, and the energy saving mode selection input means. The reception / display means for notifying the user that the operation by the user has been received, and the cooling / heating control means for controlling the cooling / heating means so that the PMV value corrected by the PMV value correcting means is stable within the range of the comfort region. Since it is provided, the power saving effect can be enhanced within the range where the comfort of the user is not impaired.

Further, a wind direction changing means for changing the wind direction of the blown air, an air volume changing means for changing the blown air volume by changing the number of revolutions of the indoor blower, an energy saving mode selecting input means, and the energy saving mode selecting input. The air flow rate changing control means for controlling the wind direction changing means and the air volume changing means based on the input from the means, and the cooling / heating control means for controlling the cooling / heating means so that the PMV value is in the comfortable range. Therefore, the PMV value can be set in the comfortable range without operating the compressor unnecessarily, and the power saving effect can be improved.

[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 is a block diagram of an air conditioner according to the same embodiment.

FIG. 3 is a front view of the remote controller when the PMV value is +1.5 in the same embodiment.

FIG. 4 (a) is a schematic cross-sectional view of an indoor unit in an air conditioner of a second embodiment of the present invention. (B) is a schematic vertical cross-sectional view of an indoor unit in an air conditioner of the same embodiment.

FIG. 5 is a schematic sectional view of an essential part showing the flow of air in the vicinity of the air outlet of the embodiment.

FIG. 6 is a functional block diagram of the air conditioner of the same embodiment.

FIG. 7 is a front view of the remote controller when the PMV value is +1.5 in the same embodiment.

FIG. 8 is a timing chart showing an operation example during a cooling operation in the embodiment.

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

[Explanation of symbols]

 3 heat exchange means 6 blower 10 PMV value calculation means 17 energy saving mode selection input means 19 PMV value correcting means 34a, 34b, 34c, 34d wind direction changing means 42 air flow rate changing control means 44 energy saving mode selectable judging means

Front page continued (72) Inventor Hideharu Ogawara 3-22 Takaida Hondori, Higashi-Osaka City, Osaka Prefecture Matsushita Refrigerator Co., Ltd. In the company

Claims (2)

[Claims] 1. An air-conditioning unit for cooling or heating a room, a PMV value calculation unit for sequentially calculating a PMV value in a living area, an energy-saving mode selection input unit, and an input of the energy-saving mode selection input unit. Correction amount output means for outputting a correction amount, a PMV value correction means for correcting the PMV value obtained by the PMV value calculation means by the correction amount determined by the correction amount output means, and the energy saving mode selection input means. The reception / display means for notifying the user that the operation by the user has been received, and the cooling / heating control means for controlling the cooling / heating means so that the PMV value corrected by the PMV value correcting means is stable within the range of the comfort region. An equipped air conditioner. 2. A cooling / heating means for cooling or heating the room, a PMV value calculating means for sequentially calculating a PMV value of a living area, a wind direction changing means for changing a wind direction of blown air, and a rotation speed of an indoor blower. And an air flow rate change control for controlling the air flow direction changing means and the air flow rate changing means based on the input by the energy saving mode selection inputting means and the energy saving mode selecting inputting means. An air conditioner comprising: means and a cooling / heating control means for controlling the cooling / heating means so that the PMV value is in a comfortable range.