JP2001280663A - Air conditioner and control method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner which can realize a comfortable living environment by presuming the sensible temperature which is the thermal sensation of man in an unsteady state in which the temperature distribution in a room variously changes at the starting time, etc., of the air conditioner and can be operated with less energy consumption. SOLUTION: This air conditioner which is operated based on the temperature in a room and a temperature set by a user calculates the sensible temperature felt by the user from the temperature of an air flow blown out of the indoor unit 12 of the conditioner and the air temperature in the room and controls its air-conditioning capacity by correcting the set temperature based on the sensible temperature felt by the user and the set temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner that controls driving by estimating a degree of comfort of a person and provides a comfortable environment and a control method thereof.

[0002]

2. Description of the Related Art Cooling increases the amount of heat radiated from the human body and discharges the heat generated by the human body to the outside of the body without excess or shortage. There is a tendency that the difference in the temperature of the environment felt by the user is significantly smaller than that during the heating. For this reason, at the time of cooling, the user of the air-conditioning apparatus tends to feel cold and feel uncomfortable easily. In particular, at the start of the cooling operation, there is a problem that the user feels chill due to a sudden temperature change, and this tendency becomes more remarkable. Although the cause is in the blown air flow, it also basically affects that the control target of the air conditioner is the room temperature. That is, the room temperature is the temperature of the air in the room, and the air conditioner should be controlled based on the temperature near the person in the living space or the sensed temperature felt by the person.

In order to solve the above problem, for example, Japanese Patent Laid-Open
As described in JP-A-337146, the control target of the air conditioner is to maintain the living space in a comfortable environment in consideration of the human body's thermal sensation such as radiant temperature and airflow, instead of the air temperature in the room. An air conditioner is disclosed. FIG.
FIG. 2 is a block diagram of a control circuit of a conventional air conditioner.
In the figure, reference numeral 30 denotes a commercial AC power supply and an indoor control unit 31.
And an outdoor control unit 34 is connected to the indoor control unit 31 via a power supply line 32 and a serial signal line 33.

The indoor controller 31 is connected to a heat exchanger temperature sensor 35, an indoor temperature sensor 36, an indoor humidity sensor 37, a speed control circuit 38, a louver drive circuit 39, and a remote controller 40. The speed control circuit 38 controls the speed of the indoor fan motor 38a, and the louver drive circuit 39 drives the louver motor 39a. This louver motor 39a
Drives a louver (not shown) for adjusting the angle of the air blown into the room up and down (or left and right).
The remote controller 40 is for setting various operating conditions.

The outdoor controller 34 is connected to a four-way valve 41, a heat exchanger temperature sensor 42, an outside air temperature sensor 43, an inverter circuit 44, and a fan drive circuit 45. The inverter circuit 44 rectifies the commercial AC power supply voltage, converts the rectified voltage to a frequency (and level) voltage according to a command from the outdoor control unit 34, and outputs the voltage to the compressor motor 44a. The fan drive circuit 45 drives an outdoor fan motor 45a.

The indoor control unit 31 and the outdoor control unit 34
Each is composed of a microcomputer and its peripheral circuits and has the following functions. The refrigerant discharged from the compressor is supplied to the four-way valve 41, the outdoor heat exchanger, the expansion valve, the indoor heat exchanger, and the four-way valve 4.
When the air flows in the order of 1 and returns to the compressor, the cooling operation is performed. On the other hand, when the four-way valve 41 is switched, the refrigerant discharged from the compressor flows through the four-way valve 41, the indoor heat exchanger, the expansion valve, the outdoor heat exchanger, and the four-way valve 51 in this order to perform the heating operation.

In the cooling / heating operation, a difference ΔT between the room temperature detected by the room temperature sensor 36 and a set temperature set by the remote controller 40 is obtained, and the operation of the compressor is performed according to the temperature difference ΔT. The frequency (output frequency of the inverter circuit 44) is controlled. At this time, the operating state is detected by detecting at least one of the amount of air blown into the room (corresponding to the speed of the indoor fan motor 38a) and the angle (corresponding to the operation amount of the louver motor 39a). Also,
At least one of the indoor temperature, the indoor humidity, the outside air temperature, and the indoor heat exchanger temperature is detected to detect the indoor and outdoor environmental conditions.

The degree of comfort of the space to be conditioned is estimated from the detection results of the environmental state and the operating state. This estimation is performed by using a neural network that has learned the degree of comfort of the human body and obtaining a predicted average report (hereinafter abbreviated as PMV) based on the state of the human body and the indoor and outdoor environmental conditions as the degree of comfort. The set temperature is corrected so that the estimation result becomes a preset comfort level. Specifically, the set temperature is corrected so that the estimated PMV becomes zero, or the cooling operation is performed such that the estimated PMV is within a predetermined range of “PMV> 0” during the heating operation. Corrects the set temperature so as to be within a predetermined range of “PMV <zero”.

In the air conditioner having the above configuration, during operation, there are two indoor and outdoor environmental conditions, for example, indoor temperature (detected temperature of the indoor temperature sensor 36) and indoor humidity (detected humidity of the indoor humidity sensor 37). Is detected. Further, as the operation state, the amount of air blown into the room (= the speed of the indoor fan 38a) and the angle (= the louver motor 39)
The airflow velocity in the room is detected based on the operation amount of “a”. From these detection results, the comfort level of the conditioned space, so-called PMV, is estimated using a neural network.

The PMV indicates a degree of comfort determined from six factors of temperature, humidity, air flow rate, radiation temperature, amount of clothes, and amount of activity ±
It is indicated by a value of 3, and when PMV = 0, most people feel comfortable, and after PMV = 0, the positive direction is hot and uncomfortable, and the negative direction is cold and uncomfortable. Generally, the recommended comfort condition for living space is -0.5 <PM
V <+0.5. When the PMV is determined, a correction value for the set temperature is determined so that the PMV becomes 0 (= set comfort level).

When the correction value is determined, the set temperature is corrected by a predetermined amount at predetermined time intervals, and a difference ΔT between the room temperature detected by the room temperature sensor 36 and the corrected set temperature is obtained. The operating frequency of the compressor is controlled according to ΔT. This process is repeated until the sum of the predetermined corrections reaches the original correction value, and then returns to the estimation of the PMV. In this way, by correcting the set temperature so that the PMV becomes 0, the purpose is to always keep the living space in a comfortable environment.

[0012]

Although the PMV is an index of an excellent thermal environment, it is basically defined by a sensory experiment in a uniform environment having no temperature change over time and a uniform environment having no vertical temperature difference. It was done. Therefore, uniform
It is applied in a stationary space, and there is a problem that it cannot be applied properly in an unsteady environment such as a temperature distribution in a room and in an unsteady state in which various changes are made. On the other hand, in the actual operating condition of the air conditioner, when the air conditioner starts up, the blowing temperature is lower than when the air conditioner is stable, and the indoor environment changes greatly every moment. The larger the difference between the room temperature and the room temperature, the larger the difference. Therefore, even if the comfort level of the environment by the PMV is calculated, when the air conditioner starts up,
The sensible temperature, which is a human thermal sensation, could not be properly estimated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. Even when the air conditioner is in an unsteady state where the temperature distribution in the room is uneven and variously changed, for example, when the air conditioner is started up, the present invention has been made.
It is an object of the present invention to provide an air conditioner that realizes a comfortable living environment and performs energy-saving driving by appropriately estimating a sensible temperature, which is a human thermal sensation.

[0014]

SUMMARY OF THE INVENTION The present invention relates to an air conditioner that operates based on a room temperature and a set temperature.
An outlet temperature detecting unit for detecting a temperature of an airflow blown from an indoor unit of the air conditioner, an indoor temperature detecting unit for detecting an indoor temperature, and a set temperature memory unit for storing a set temperature input by a user. The temperature of the human body is calculated in advance from the blowout temperature detected by the blowout temperature detection unit, the set temperature stored in the set temperature memory unit, and the room temperature detected by the room temperature detection unit. The set temperature is corrected based on the set temperature stored in the set temperature memory unit.

Further, according to the present invention, the room temperature can be stabilized from at least one of a change in air conditioning capacity, a change in the blow-out temperature detected by the blow-out temperature detection unit, and a change in the room temperature detected by the room temperature detection unit. The determination is performed, and the sensible temperature is calculated when the indoor temperature change is stabilized within a predetermined width.

Further, according to the present invention, when the temperature difference between the indoor temperature detected by the indoor temperature detecting section and the set temperature stored in the set temperature memory section becomes equal to or less than a predetermined value, the sensible temperature is calculated. Things.

Further, according to the present invention, the stability of the outlet temperature is determined from a change in the outlet temperature detected by the outlet temperature detecting section.
This is to calculate the sensible temperature when the blowing temperature is stabilized.

Further, the present invention calculates the sensible temperature by taking into account at least one of the operation mode of the air conditioner, the blown air flow angle, the blown air volume, and the distance from the indoor unit of the air conditioner to the human body. It is.

Further, according to the present invention, the limit value of the set temperature corrected by the set temperature correction unit is set to a temperature lower by a certain temperature than the room temperature detected by the room temperature detection unit during heating.
During cooling, the temperature is set to a certain temperature higher than the indoor temperature detected by the indoor temperature detecting unit.

Further, the present invention relates to an air conditioner which operates based on a room temperature and a set temperature, wherein a user determines the airflow temperature blown from an indoor unit of the air conditioner, the indoor air temperature and the set temperature. Calculating the sensed temperature felt by the user, and correcting the set temperature based on the temperature calculated as felt by the user and the set temperature.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 1 is a configuration diagram of an air conditioner according to Embodiment 1 of the present invention, FIG. 2 is a circuit diagram of a microcomputer of a control device of the air conditioner, FIG. 3 is a control block diagram of the air conditioner, and FIG. FIG. 3 is a control flowchart of the air-conditioning apparatus according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 1 denotes a compressor operated at a constant or variable frequency, reference numeral 2 denotes a four-way valve for changing the direction of refrigerant flow during cooling operation and heating operation, and reference numeral 3 denotes an outdoor heat exchanger. The compressor 1, the four-way valve 2, and the heat exchanger 3 mainly constitute an outdoor unit 4. On the other hand, 5 is a heat exchanger on the indoor side, 6 is a blower for circulating indoor air, 7 is a suction port for sucking air from the room into the blower 6, 8 is an outlet for blowing air from the blower 6 into the room, 9 is A wind direction vane provided in the outlet 8 for changing a blowing direction (blowing airflow angle), an indoor temperature detecting unit 10 such as a thermistor for measuring indoor air temperature, and an outlet 11 blown out from the outlet 8 It is a blowout temperature detecting unit such as a thermistor that measures the temperature of air. The heat exchanger 5, the blower 6, the suction port 7, the outlet 8, the wind direction vane 9, the indoor temperature detector 10, and the outlet temperature detector 11 constitute an indoor unit 12.

The indoor unit 12 and the outdoor unit 4
Are connected by a pipe 14, respectively, and constitute a refrigeration cycle as a whole. Therefore, cooling and heating of the air-conditioned room 13 can be performed by operating the compressor 1 and switching the four-way valve 2. The solid arrows in FIG. 1 indicate the flow of the refrigerant during the cooling operation or the dehumidifying operation, and the broken arrows indicate the flow of the refrigerant during the heating operation. The indoor and outdoor units 4 and 12 are electrically connected to the control device 15 for transmitting and receiving control signals. Reference numeral 16 denotes an input unit such as a remote controller for inputting operating conditions such as a user's feeling, desired temperature, and heating / cooling. An input operation performed by the user is transmitted to the indoor / outdoor units 4 and 12 via the control device 15. Sent in the form. Therefore, the operation of the air conditioner is performed so as to satisfy the indoor temperature setting desired by the user.

The indoor air temperature of the room to be air-conditioned 13 is detected by an indoor temperature detecting section 10 provided in the indoor unit 12, and a signal is sent to a control device 15. Control device 1
5 operates the air conditioner based on these control signals. Specifically, when operating the air conditioner, the compressor 1
, The rotation speed of the indoor blower 6, and the vane angle φ of the wind direction vane 9 are changed as needed based on a control signal from the control device 15.

Here, a circuit configuration diagram of a microcomputer built in the control device 15 will be described with reference to FIG. 15a is a microcomputer (hereinafter referred to as "microcomputer") built in the control device 15, 17 is an input circuit for inputting room temperature, blow-out temperature, set temperature, etc., 18 is a set temperature input by a user, A memory for storing various programs for calculating the sensible temperature and correcting the set temperature; 19, a CPU for performing calculation processing and determination processing for the correction set temperature; This is an output circuit for outputting to the air conditioning means 21 as hardware means for performing air conditioning of the compressor 1, the indoor blower 6, the wind direction vane 9, and the like. Therefore, the microcomputer 1
5a is an input (input) circuit 17, a memory 18 and a C
It comprises a PU 19 and an output (output) circuit 20.

Next, the function of the control device 15 will be described with reference to the functional block diagram of the air conditioner according to the present embodiment shown in FIG. Reference numeral 22 denotes a set temperature memory unit that stores a set temperature input to the input unit 16 by the user, and occupies a part of the memory 18. 23 is a room temperature detecting unit 1
0, the indoor air temperature detected by the blowout temperature detection unit 11
Is a sensible temperature calculating unit that calculates a sensible temperature, which is a human thermal sensation, from the blown air temperature detected by the above and the set temperature stored in the set temperature memory unit 22. Reference numeral 24 denotes a set temperature correction unit that compares the sensible temperature calculated by the sensible temperature calculation unit 23 with the set temperature stored in the set temperature memory unit 22 to correct the set temperature. The air-conditioning means 21 according to the temperature difference between the corrected indoor air temperature and the set temperature corrected by the set temperature correction unit 24.
This is an air conditioning capacity control unit that controls the air conditioning capacity of the air conditioner.

Next, the first embodiment configured as described above
The operation of the air conditioner in will be described with reference to the flowchart of FIG. In FIG. 4, when a power switch (not shown) is turned on and the user inputs various operating conditions such as an operation mode and a set temperature through the input unit 16 (YES in step S101), the input set temperature is converted into an input circuit. 1
7 and stored in the set temperature memory unit 22 of the memory 18 (step S102). At this time, the indoor temperature detector 1
0 detects the room temperature, and the blow-out temperature detecting section 11 detects the blow-out temperature and inputs it to the input circuit 17 (step S10).
3). Next, the sensible temperature calculation unit 23 reads a program for calculating the sensible temperature stored in the memory 18,
Detected room temperature / outlet temperature and set temperature memory unit 22
Is calculated from the set temperature stored in step S104 (step S104). Hereinafter, an example of the calculation of the sensible temperature by the sensible temperature calculation unit 23 will be specifically described.

FIG. 5 shows a situation when the air conditioner is actually operated in the environmental test room. This graph shows transitions of the room temperature average temperature, the blow-out temperature, and the compressor operating frequency after the air conditioner (home inverter type room air conditioner) is started in the cooling operation at an outside air temperature of 35 ° C.
The set temperature in the room at this time is 26 ° C. As shown in the figure, the indoor temperature decreases with the lapse of time, and the deviation between the indoor temperature and the set temperature decreases, so that the operating frequency of the compressor also decreases. Also, the blowout temperature changes with a change in the operating frequency of the compressor. In addition, the blowing air direction (horizontal direction) and the blowing air volume (low air volume) in the operation of the air conditioner are the same.

The indoor temperature distribution environment in the falling condition of the operation of the air conditioner will be described below. At the time shown in FIG. 5 (10 minutes after the start of operation of the air conditioner),
With the room average temperature still not reaching the set temperature,
Both the outlet temperature and the average room temperature of the air conditioner are falling. FIG. 6 is a temperature distribution diagram of the indoor section at this point. From FIG. 6, the blowout temperature has not yet fallen as the average temperature of the entire room, and the jet blown out from the indoor unit 12 of the air conditioner moves in the horizontal direction, and the jet wall of the indoor unit 12 of the air conditioner It just falls slightly on the other side. Therefore, it can be seen that the temperature in the vicinity of the person in the living space or the sensible temperature felt by the person is still on the “hot” side.

Next, at the time point shown in FIG. 5 (after 40 minutes from the start of the operation of the air conditioner), the average room temperature has reached the set temperature, but the indoor environment is not yet stable. The outlet temperature of the harmony device is the lowest. FIG. 7 is a temperature distribution diagram of a cross section of the room at the point in time. In FIG. 7, the low-temperature jet blown out from the indoor unit 12 of the air conditioner greatly falls in the direction of the indoor floor, and the living area (in the vicinity of the center of the indoor where it is generally assumed that the user is present) It can easily be imagined that the environment of ()) is significantly deteriorating to the "cold" side. Therefore, the perceived temperature perceived by humans is on the "cold" side, and even if the average room temperature substantially matches the set temperature, it may be necessary to correct the set temperature if the blowout temperature of the air conditioner is low. Understand. That is, the sensible temperature is estimated to be intermediate between the blowout temperature and the set temperature.

On the other hand, FIG. 5 shows a state in which both the indoor environment and the equipment are almost stable, and FIG. 8 is a temperature distribution diagram showing the temperature distribution state in the room at this time. In this state, since the indoor environment and the characteristics of the air conditioner are close to the stable state, the blowout temperature is high, and even when looking at the temperature distribution, the jet blown out from the indoor unit 12 of the air conditioner is directed toward the indoor floor surface. It is not in a situation of falling significantly. Therefore, since the sensible temperature felt by a human in the living area is almost the same as the set temperature, it is understood that the set temperature does not need to be corrected.

Based on the above experimental results, for example, the temperature of the living area (near the center of the room where the user is generally assumed to be occupied) is estimated as the sensible temperature felt by humans,
By incorporating this tendency of the temperature change in the living area into the program for calculating the sensible temperature, the sensible temperature can be appropriately calculated.

When the perceived temperature is calculated, the set temperature correction unit 24 reads a set temperature correction program stored in the memory 18 based on the calculated perceived temperature and the set temperature stored in the set temperature memory unit 22. Then, the set temperature is corrected so that the sensible temperature is maintained at an appropriate temperature (step S105). Hereinafter, the correction of the set temperature by the set temperature correction unit 24 will be specifically described.

FIG. 9 is a diagram showing various temperature transitions to show the set temperature correction during the cooling operation of the air conditioner according to the present embodiment. FIG. 9 shows the elapsed time on the horizontal axis and the temperature on the vertical axis, and shows the respective time transitions of the set temperature, the outlet temperature, the room temperature, and the sensible temperature during the cooling operation.
A to D in the figure indicate predetermined times at which the set temperature is corrected after the operation of the air conditioner is started.

When the operation of the air conditioner is started, the air outlet temperature decreases during the cooling operation. In addition, the room temperature gradually decreases with the target of the set temperature. At the beginning of the operation of this air conditioner, the blowing temperature is considerably lower than the room temperature as shown in FIG.

At time A, the room temperature has not yet reached the set temperature, but since the sensed temperature is substantially equal to the set temperature and the user feels that the temperature is appropriate, the set temperature correction unit 24 corrects the set temperature. Perform Along with this,
Although the blowing temperature and the room temperature rise, the user feels that the temperature is appropriate because the sensible temperature is maintained at the same level as the set temperature, and there is no problem in terms of comfort. Conversely, if the operation of the air conditioner is continued without performing correction to increase the set temperature,
Since the blowing temperature is further reduced, the sensible temperature is lower than the appropriate temperature, and the user feels chilly due to excessive cooling.

Since the blowout temperature and the room temperature continue to rise due to the correction of the set temperature at the time A, the set temperature correction is made at the time B before the sensible temperature eventually rises beyond the range where the user feels appropriate. The unit 24 changes the set temperature to a temperature slightly lower than the set temperature corrected at the time A. By this correction, the sensible temperature can be kept within a range where the sensible temperature is felt to be appropriate.

By performing this correction at time C and time D in the same manner, the sensible temperature can be maintained within a range in which the user feels the appropriate temperature, and comfort can be maintained without giving the user chills due to excessive cooling. Can be maintained. In addition, the energy saving operation of the air conditioner is performed by the correction of the set temperature, and the air conditioner control that is healthy and does not get too cold can be realized. Therefore, based on the set temperature stored in the set temperature memory unit 22 and the sensible temperature calculated by the sensible temperature calculation unit 23, the set temperature correction unit 24 sets the sensible temperature to be maintained within a range in which the sensible temperature is considered to be appropriate. The temperature is corrected, and the corrected set temperature is output to the air conditioning capacity control unit 25.

The air conditioning capacity control unit 25 controls the air conditioning capacity of the air conditioner 21 in accordance with the temperature difference between the room air temperature and the set temperature corrected by the set temperature correction unit 24. By repeating the series of control operations from step S103 to step S106, the user's sensible temperature can be maintained within a range in which the user can feel the appropriate temperature during operation of the air conditioner. If there is a change input, the process returns to step S101 to perform the above operation.

Embodiment 2 FIG. 10 is a control block diagram of the air-conditioning apparatus according to Embodiment 2. Note that the basic configuration of the air-conditioning apparatus is the same as that of Embodiment 1, and thus the description is omitted. Further, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a description will be given of a case in which the sensible temperature calculation unit 23 calculates the sensible temperature after the room temperature is stabilized.

In FIG. 10, the sensible temperature calculating section 23 includes a room temperature stability determining section 23a for determining the stability of the indoor temperature detected by the indoor temperature detecting section 10. Also,
The memory 18 shown in FIG. 2 stores a program for determining the stability of the room temperature. This room temperature stability is determined by storing the time-series temperature data of the room temperature directly detected by the room temperature detecting means 10 in the memory 18 and determining whether the temperature deviation in a predetermined time unit is within a predetermined width. It can be determined by whether or not.

The determination of the stability may be made by another method. The stability is determined by detecting the operating frequency of the compressor 1 and changing the frequency, the temperature change of the blow-out temperature detected by the blow-out temperature detecting means 11, and the like. May be. When the room temperature determining unit 23a determines that the room temperature is stable for a predetermined amount or more, the sensible temperature calculating unit 23 reads out the program for calculating the sensible temperature stored in the memory 18 and reads the detected room temperature and temperature. The sensible temperature is calculated from the blowing temperature and the set temperature stored in the set temperature memory unit 22. Operations after the calculation of the sensible temperature are the same as those in the first embodiment.

In the present embodiment, the timing for calculating the sensible temperature is after the room temperature has been stabilized as described above, so that the set temperature is not corrected before the room temperature reaches the set temperature. Even when the user installs a thermometer in the room and checks the operation of the air conditioner with the thermometer, the room temperature can quickly reach the set temperature and the user can be satisfied. In addition, the situation where the room temperature has not yet reached the set temperature is an environment state in which the room temperature and the outlet temperature are largely changed even in the unsteady state at the start of the operation of the air conditioner, and particularly unstable. Therefore, by performing control after having a certain degree of environmental stability, the predictability and reproducibility of the control effect by the set temperature correction can be improved.

Embodiment 3 FIG. FIG. 11 is a control block diagram of the air-conditioning apparatus according to Embodiment 3. Note that the basic configuration of the air-conditioning apparatus is the same as that of Embodiment 1, and thus the description is omitted. Further, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a description will be given of a case in which the sensible temperature calculation unit 23 calculates the sensible temperature after the blowout temperature is stabilized.

In FIG. 11, the sensible temperature calculating section 23 includes an outlet temperature stability determining section 23b for determining the stability of the outlet temperature detected by the outlet temperature detecting section 11. The memory 18 shown in FIG. 2 stores a program for determining the stability of the outlet temperature. The stability of the blow-out temperature can be calculated by a temperature deviation in a predetermined time unit by storing time-series temperature data of the blow-out temperature detected by the direct blow-out temperature detecting means 11 in the memory 18.

In the present embodiment, the timing for calculating the sensible temperature is set after the blow-out temperature is stabilized as described above. Therefore, compared to the case where the indoor temperature is stabilized, the environment of the living area where the humans live is more stable. The stability can be determined based on

Embodiment 4 FIG. 12 is a control block diagram of an air-conditioning apparatus according to Embodiment 4. Note that the basic configuration of the air-conditioning apparatus is the same as that of Embodiment 1, and thus the description is omitted. Further, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, when the temperature difference between the set temperature and the indoor air temperature is close to the extent that the indoor environment can be estimated to have the predetermined stability, the sensible temperature calculating unit even before the indoor temperature is stabilized. A description will now be given of the calculation of the sensory temperature of No. 23.

In FIG. 11, a temperature difference determining section for calculating a temperature difference between the indoor air temperature detected by the indoor temperature detecting section 10 and the set temperature stored in the set temperature memory section 22 is provided in the sensible temperature calculating section 23. 23c is included. In the second embodiment, the sensory temperature is calculated after the room air temperature is stabilized. However, in the present embodiment, even before the room air temperature is stabilized, the temperature difference between the set temperature and the room air temperature can be within a predetermined range. For example, the environment is considered to be a relatively stable environment in an unsteady state at the start of operation of the air-conditioning apparatus, and the sensible temperature is calculated on the assumption that the control effect by the set temperature correction can be expected with some predictability.

The predetermined temperature difference between the set temperature and the room air temperature is, for example, the set temperature when the temperature distribution in the room becomes stable when the air conditioner is actually operated in the environmental test room shown in FIG. And the temperature difference between the room air temperature.

In this embodiment, since the air conditioning control is performed after the environmental condition has a predetermined stability, the predictability and the reproducibility of the control effect of the set temperature correction can be maintained. Further, the time when the set temperature is corrected and the air conditioning
Therefore, even when a time lag occurs during the time when the indoor temperature changes by actually performing the air conditioning control, overcooling is prevented and the user does not feel chilly due to excessive cooling.

Embodiment 5 FIG. FIG. 13 is a control block diagram of an air-conditioning apparatus according to Embodiment 5. Note that the basic configuration of the air-conditioning apparatus is the same as that of Embodiment 1, and thus the description is omitted. Further, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, the sensible temperature is not calculated based only on the room temperature, the outlet temperature, and the set temperature stored in the set temperature memory unit 22, but the wind direction (outlet air flow angle), the air volume, and the position of the user. A description will be given of a method of calculating the sensible temperature in consideration of the operation mode input.

In FIG. 13, reference numeral 26 denotes an operation mode detecting section for detecting various operation modes such as cooling, heating, and dehumidification. By detecting this operation mode, it is possible to estimate a human body thermal sensation based on the degree of dehumidification in calculating the sensible temperature. 27 is the vane angle of the wind direction vane 9
Is an airflow angle detection unit for detecting the direction of airflow from the air conditioner, and 28 is an airflow amount detection unit for detecting the amount of airflow from the air outlet 8. Reference numeral 29 denotes a human body distance detection unit that detects the position of the human body with respect to the air outlet 8 and the distance to the human body using an infrared sensor or the like.

The memory 18 shown in FIG. 2 stores room temperature, blowout temperature, operation mode, blowout airflow angle, blowout air amount,
A program for calculating the sensible temperature from the human body distance and the set temperature is stored. The calculation of the sensible temperature can individually and specifically respond to the situation of the living area of the room to be air-conditioned 13 at that time, so that the air-conditioning capacity can be controlled more appropriately in accordance with the comfort level of the user.

Embodiment 6 FIG. FIG. 14 is an explanatory diagram of the limit value of the set temperature to be corrected according to the sixth embodiment. Note that the basic configuration of the air-conditioning apparatus is the same as that of Embodiment 1, and thus the description is omitted. Further, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the present embodiment, a description will be given of a case where the correction amount corrected by the set temperature correction unit 24 is limited.

When the correction amount to be corrected by the set temperature correction unit is large, for example, in the case of a cooling operation, when the set temperature is corrected based on the sensible temperature calculated by the sensible temperature calculation unit 23, the set temperature is set to the indoor If the room temperature is raised higher than the room temperature detected by the temperature detecting unit 10, in the case of an air conditioner using a variable frequency compressor, the rotation frequency of the compressor 1 is reduced by the air conditioning capacity control unit 25. On the other hand, when there is a difference between the set temperature and the room temperature over a predetermined value, the operation of the compressor 1 is stopped. When the rotation frequency of the compressor 1 decreases, the temperature of the blown air becomes equal to the room temperature, and correction is performed to lower the set temperature again. Eliminate this discomfort and turn on / off the compressor
Since the FF is not repeated more than necessary, if the difference between the set temperature and the room temperature exceeds a predetermined value, it is necessary to limit the correction amount of the set temperature.

Therefore, as shown in FIG. 14, in the heating operation, when the set temperature is lower than the detection room temperature indicated by the dotted line by a predetermined value or more, the set temperature is corrected only to the set temperature limit value indicated by the thick line. Similarly, in the cooling operation, when the set temperature is higher than the detection room temperature indicated by the dotted line by a predetermined value or more, the set temperature is corrected only to the set temperature limit value. That is, the correction of the set temperature is performed only in the shaded portions in FIG. For this reason, it is possible to prevent the compressor 1 from stopping more than necessary without making a difference between the set temperature and the room temperature equal to or more than a predetermined value due to the correction of the set temperature.

[0057]

As is apparent from the above invention, the air-conditioning apparatus according to the present invention has a body temperature which is a human's thermal sensation when the air-conditioning apparatus is in an unsteady state when the indoor temperature distribution environment is changing. Is calculated, and it is possible to realize a comfortable living environment by preventing excessive cooling that occurs during cooling.

Further, the air conditioner according to the present invention performs control after the indoor temperature distribution environment is stabilized to a predetermined degree, thereby achieving a predictable and reproducible control effect of realizing a comfortable living environment by setting temperature correction. Can be increased.

Further, the air conditioner according to the present invention can determine the stability of the environment based on the environment of the living area where the person lives, and can realize a comfortable living environment.

Further, the air conditioner according to the present invention enhances the predictability and reproducibility of the control effect of realizing a comfortable living environment by correcting the set temperature, and also takes into account the time lag of the air conditioning control, thereby improving the user's ability. Comfort can be ensured.

Further, the air-conditioning apparatus according to the present invention can individually and specifically cope with the situation of the living area at each time, and can realize comfort corresponding to each living environment.

Further, the air conditioner according to the present invention can maintain the operation efficiency without stopping the compressor unnecessarily due to the correction of the set temperature.

In the air conditioner according to the present invention, when the air conditioner is in an unsteady state in which the indoor temperature distribution environment is changing when the air conditioner starts up, the air-conditioning device calculates the sensible temperature, which is a human thermal sensation, and occurs during cooling. A comfortable living environment can be realized by preventing excessive cooling.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an air-conditioning apparatus according to Embodiment 1 of the present invention.

FIG. 2 is a circuit diagram showing a microcomputer of a control device of the air conditioner according to Embodiment 1 of the present invention.

FIG. 3 is a control block diagram of the air-conditioning apparatus according to Embodiment 1 of the present invention.

FIG. 4 is a control block diagram of the air-conditioning apparatus according to Embodiment 1 of the present invention.

FIG. 5 is a diagram showing a state of a cooling operation of the air conditioner in the environmental test room.

FIG. 6 is a temperature distribution diagram of a cross section of the room when the cooling operation of the air conditioner is performed in the environmental test room.

FIG. 7 is a temperature distribution diagram of a cross section of the room when the cooling operation of the air conditioner is performed in the environmental test room.

FIG. 8 is a temperature distribution diagram of a cross section of the room when the cooling operation of the air conditioner is performed in the environmental test room.

FIG. 9 is a diagram illustrating a set temperature correction during a cooling operation of the air-conditioning apparatus according to Embodiment 1 of the present invention.

FIG. 10 is a control block diagram of an air conditioner according to Embodiment 2 of the present invention.

FIG. 11 is a control block diagram of an air conditioner according to Embodiment 3 of the present invention.

FIG. 12 is a control block diagram of an air conditioner according to Embodiment 4 of the present invention.

FIG. 13 is a control block diagram of an air conditioner according to Embodiment 5 of the present invention.

FIG. 14 is an image diagram showing a limit value of a set temperature correction according to a sixth embodiment of the present invention.

FIG. 15 is a block diagram of a control circuit of a conventional air conditioner.

[Explanation of symbols]

1 compressor, 2 four-way valve, 3 outdoor heat exchanger,
4 outdoor unit, 5 indoor heat exchanger, 6 blower, 7 inlet, 8 outlet, 9 wind vane,
10 room temperature detecting section, 11 blow-out temperature detecting section,
Reference Signs List 12 indoor unit, 13 air-conditioned room, 14 piping, 15 control device, 15a microcomputer, 16 input section, 17 input circuit, 18 memory, 19 CPU, 20 output circuit, 21 air conditioning means, 22 set temperature memory section, 23 Sensory temperature calculating section, 23a indoor temperature stability determining section, 23b outlet temperature stability determining section, 23c temperature difference determining section, 24 set temperature correcting section, 25 air conditioning capacity correcting section, 26 operation mode detecting section, 27 blowing air flow angle detecting section, 28
Blowing air volume detection unit, 29 human body distance detection unit, 30 commercial power supply, 31 indoor control unit, 32 power supply line,
33 serial signal line, 34 outdoor controller, 3
5, 42 heat exchanger temperature sensor, 36 indoor temperature sensor, 37 indoor humidity sensor, 38 speed control circuit,
38a indoor fan motor, 39 louver drive circuit,
39a louver motor, 40 remote control, 41
Four-way valve, 43 outside air temperature sensor, 44 inverter circuit, 44a compressor motor, 45 fan drive circuit, 45a outdoor fan motor.

Claims (7)

[Claims] 1. An air conditioner that operates based on an indoor temperature and a set temperature, a blowout temperature detecting unit that detects a temperature of an airflow blown from an indoor unit of the air conditioner, and an indoor room that detects an indoor temperature. A temperature detection section, and a set temperature memory section for storing a set temperature inputted by a user, wherein the blowout temperature detected by the blowout temperature detection section, the set temperature stored in the set temperature memory section, and the indoor temperature detection section. An air conditioning apparatus which calculates in advance the perceived temperature of the human body from the detected indoor temperature and corrects the set temperature based on the perceived temperature and the set temperature stored in the set temperature memory unit. 2. A stability determination of the indoor temperature is performed from at least one of a change in air conditioning capacity, a change in the blowout temperature detected by the blowout temperature detection unit, and a change in the room temperature detected by the room temperature detection unit. 2. The air conditioner according to claim 1, wherein the sensory temperature is calculated when the indoor temperature change is stabilized within a predetermined width. 3. The sensory temperature is calculated when a temperature difference between an indoor temperature detected by the indoor temperature detecting section and a set temperature stored in the set temperature memory section becomes equal to or less than a predetermined value. The air conditioner according to claim 1, wherein 4. The apparatus according to claim 1, wherein the controller determines a stability of the outlet temperature based on a change in the outlet temperature detected by the outlet temperature detector, and calculates a sensed temperature when the outlet temperature is stabilized.
The air conditioner as described in the above. 5. The sensible temperature is calculated by taking into account at least one of an operation mode of the air conditioner, a blown air flow angle, a blown air volume, and a distance from an indoor unit of the air conditioner to a human body. The air conditioner according to claim 1. 6. A limit value of a set temperature corrected by the set temperature correction unit is set to a temperature lower than a room temperature detected by the room temperature detection unit during heating, and is set to a room temperature during cooling. 2. The air conditioner according to claim 1, wherein the temperature is set to a certain temperature higher than the room temperature detected by the air conditioner. 7. An air conditioner that operates based on an indoor temperature and a set temperature, wherein a user senses from an airflow temperature blown from an indoor unit of the air conditioner, an indoor air temperature, and a set temperature. A method for controlling an air conditioner, comprising: calculating a sensible temperature; and correcting the set temperature based on the temperature calculated as being felt by the user and the set temperature.