WO2017159632A1

WO2017159632A1 - Air conditioner

Info

Publication number: WO2017159632A1
Application number: PCT/JP2017/010022
Authority: WO
Inventors: 真和粟野; 吉田　和正; 貴郎上田; 拓哉阿部
Original assignee: 日立ジョンソンコントロールズ空調株式会社
Priority date: 2016-03-18
Filing date: 2017-03-13
Publication date: 2017-09-21
Also published as: JP2017166798A

Abstract

The presence time of a person in a room is continually updated (step S15). When the presence time is equal to or greater than a prescribed value T2 (Step S17 = Yes), the flow of an air conditioner is reduced (step S18). When the presence time is equal to or greater than a prescribed value T2 (>T3) (step S19 = Yes), the setting temperature of the air conditioner is changed (step S20). Namely, cooling is increased and heating is reduced.

Description

Air conditioner

The present invention relates to an air conditioner.

As a means of evaluating the feeling of comfort due to air conditioning, an index is used to estimate a person's feeling of heat from environmental factors related to heat, such as room temperature and humidity. In general, in order to estimate the thermal sensation of a person, the comfortable feeling is estimated by a measuring device that imitates the shape and body temperature of the person.

As a background art in this technical field, there is JP-A-2002-22238 (Patent Document 1). This publication states that “the comfort evaluation device is a thermal environment detection means 10 for detecting a thermal environment element around a human body installed in an automobile interior or the like, and a signal output from the thermal environment detection means connected to the thermal environment detection means 10. Based on the human body heat model 11 for estimating the skin temperature of the human body face, the face skin temperature estimated by the human body heat model 11 and the rate of change thereof are used to estimate the whole body temperature sensation such as hot and cold. Based on the relationship between the warm sensation estimation means 12 and the whole body warm sensation and the comfort feeling, there is provided a comfort sensation estimation means 13 that quantitatively estimates the level of comfort, such as comfort, comfort, etc. (See summary).

Paragraph 0018 of Patent Document 1 states that “the human body thermal model is a system in which the human body is divided into parts such as the head, arms, torso and legs, and the amount of clothing, the level of activity, sweating, blood Estimate the thermal sensation based on the thermal environment element detected by the thermal environment detection means by calculating the thermal balance between the human body and the environment, taking into account the characteristics of human body temperature regulation reaction such as flow It is a mathematical model for calculating skin temperature, which is physiological information, for each part of the human body. "

JP 2002-22238 A

However, even if the perceived temperature, such as whether a person feels heat or whether it feels cold, is estimated from the temperature at that time, it depends on the length of time the room is air-conditioned. The way people feel the heat and cold is different, and Patent Document 1 does not consider this point.
Then, this invention makes it a subject to provide the air conditioner which implement | achieves comfortable air-conditioning reflecting a person's occupancy time.

In order to solve the above-described problems, an aspect of the present invention provides an indoor unit that blows out air-conditioned air, a person detection unit that detects a person, and a time during which the person detected by the person detection unit is present in a room to be air-conditioned. An occupancy time determination unit to determine, and an air conditioning control unit to change any one or more of the direction, amount, or set temperature of the conditioned air based on the occupancy time determined by the occupancy time determination unit Have.

ADVANTAGE OF THE INVENTION According to this invention, the air conditioner which implement | achieves comfortable air-conditioning reflecting a person's occupancy time can be provided.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

FIG. 1 is a front view of an indoor unit, an outdoor unit, and a remote controller of an air conditioner according to an embodiment of the present invention. FIG. 2 is a side sectional view of an indoor unit of an air conditioner that is an embodiment of the present invention. FIG. 3 is a block diagram showing an outline of a control unit of an air conditioner according to an embodiment of the present invention. FIG. 4 is a flowchart for explaining the comfortable operation control mode of the air conditioner pattern 1 according to the embodiment of the present invention. FIG. 5 is a flowchart for explaining the comfortable operation control mode of the air conditioner pattern 2 according to the embodiment of the present invention. FIG. 6 is a flowchart for explaining the comfortable operation control mode of the pattern 3 of the air conditioner according to the embodiment of the present invention.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a front view of the indoor unit 100, the outdoor unit 200, and the remote controller 300 of the air conditioner 1 according to this embodiment.
As shown in FIG. 1, the air conditioner 1 includes an indoor unit 100, an outdoor unit 200, and a remote controller 300.

The outdoor unit 200 includes a compressor, an outdoor heat exchanger, an outdoor blower, a four-way valve, and an expansion valve. The indoor unit 100 includes an indoor heat exchanger and an indoor blower. The indoor unit 100 and the outdoor unit 200 are connected by a refrigerant pipe (not shown), and the indoor unit 100 in which the indoor unit 100 is installed can be air-conditioned by a known refrigerant cycle. The indoor unit 100 and the outdoor unit 200 transmit and receive information to and from each other via a communication cable (not shown).

The remote controller 300 is operated by a user and transmits an infrared signal to the remote control transmission / reception unit 11 of the indoor unit 100. The contents of the infrared signal are commands such as an operation request to the air conditioner 1, a change in set temperature, a timer, an operation mode change, and a stop request. The air conditioner 1 performs air conditioning operations such as a cooling mode, a heating mode, and a dehumidifying mode based on the commands of these infrared signals. The indoor unit 100 transmits data such as room temperature information, humidity information, and electricity bill information from the remote control transmission / reception unit 11 to the remote control 300.
In addition, a human detection unit 12 is installed in the lower part of the center of the indoor unit 100. The human detection unit 12 is a sensor that detects a human body in a room where the indoor unit 100 is installed by a camera (CCD (Charge-Coupled Device)), a thermopile, an infrared sensor, or the like.

FIG. 2 is a side sectional view of the indoor unit 100.
As shown in FIG. 2, the housing base 21 of the indoor unit 100 houses internal structures such as an indoor heat exchanger 22, a blower fan 23, and a filter 28.

The indoor heat exchanger 22 has a plurality of heat transfer tubes 22a. The indoor heat exchanger 22 is configured to heat or cool the air that has been taken into the indoor unit 100 by the blower fan 23 with the refrigerant that flows through the heat transfer pipe 22a. The heat transfer tube 22a communicates with the above-described refrigerant pipe and constitutes a part of a known refrigerant cycle.

The left and right wind direction plates 24 follow a command from a control unit 30 (FIG. 3), which will be described later, of the indoor unit 100, and a left and right wind direction plate motor 53 (FIG. 3) with a rotating shaft (not shown) provided at the bottom as a fulcrum It is rotated by.
The vertical wind direction plate 25 is driven by a vertical wind direction plate motor 54 (FIG. 3) with pivot shafts (not shown) provided at both ends as fulcrums according to instructions from a control unit 30 (FIG. 3) described later of the indoor unit 100. ).
The vertical wind direction plate 25 may be configured to be divided in the left-right direction when viewed from the front of the indoor unit 100.
The front panel 26 is installed so as to cover the front surface of the indoor unit 100 and is configured to be rotatable by a front panel motor (not shown) with the lower end as an axis. Further, the front panel 26 is not limited to this configuration, and may be configured to be fixed to the lower end.

As the blower fan 23 rotates, the room air is taken in through the air suction port 27 and the filter 28, and the air heat-exchanged by the indoor heat exchanger 22 is guided to the blowout air passage 29a. The air guided to the blowout air passage 29a is adjusted in wind direction by the left and right airflow direction plates 24 and the vertical airflow direction plate 25, and is sent to the outside from the air blowout port 29b. The air sent out from the air outlet 29b air-conditions the room where the indoor unit 100 is installed.
The structure of the air conditioner 1 of a present Example is an example to the last, and this invention is applicable also about the form of all the air conditioners.

FIG. 3 is a block diagram illustrating an outline of the control unit 30 of the air conditioner 1.
The control unit 30 of the air conditioner 1 includes a person identification unit 31, a occupancy time determination unit 32, a storage unit 34, and an air conditioning control unit 36. The control unit 30 is a device that controls the air conditioner 1.
The control unit 30 is connected to the human detection unit 12 and the room temperature sensor 35. The human detection unit 110 captures an image of a person in the air-conditioned room and transmits it to the human identification unit 31. The room temperature sensor 35 measures the room temperature in the air-conditioned room.

The storage unit 34 stores various information.
The air conditioning control unit 36 controls the load 50 of the air conditioner 1. The load 50 includes a compressor motor 51 that drives a compressor (not shown), a blower fan motor 52 that drives the blower fan 23, a left and right wind direction plate motor 53 that drives the left and right wind direction plates 24, and an up and down wind direction plate 25. There is an up / down wind direction plate motor 54 to be driven.

The person identification unit 31 identifies a person from the image of the person detected by the person detection unit 12. The human identification unit 31 detects a human body including a head of a resident at every predetermined time based on image information obtained by the human detection unit 12 configured by a CCD or the like, and information on the human body (hereinafter “human body”). Information ”) is stored in the storage unit 34. Note that “detecting a human body including a head” includes detecting the whole body including a head (head region), a shoulder (shoulder region), and a foot (foot region). The human identification unit 31 detects the characteristic amount of the human body by detecting the width / length of the head, the shoulder width, the center position of the head, the position of the head and the shoulder, the height, the amount of clothes, the skin surface temperature, the color of the skin, the color temperature, etc. Acquired and stored in the storage unit 34.

Further, the person identifying unit 31 can also know the position where the person of the individual human body information exists in the room. This position information is also stored in the storage unit 34 in association with the human body information.
The occupancy time determination unit 32 determines the time that the individual person specified by the person identification unit 31 has been in the room. Specifically, the time during which it can be confirmed that the individual persons specified by the person identifying unit 31 are continuously present (captured) is counted (more details will be described later). The occupancy time of each person is stored in the storage unit 34 in association with the human body information.
The activity amount determination unit 33 determines the activity amount of each person identified by the person identification unit 31. Specifically, the person identification unit 31 can determine that the person whose movement distance in the room is longer within a certain period of time has a larger amount of activity. This activity amount information is also stored in the storage unit 34 in association with the human body information.

By the way, even in the same air conditioning setting, a person in a room that has been air-conditioned for a long time feels too cold, too hot, or too air-conditioned. In other words, it is necessary to adjust the air conditioning by judging the time in the room where the air conditioning is performed. Below, 3 patterns are demonstrated about the example which adjusts the air conditioning according to occupancy time using the said hardware constitutions. These three patterns are referred to as a comfortable driving control mode.

<Pattern 1>
FIG. 4 is a flowchart illustrating the comfortable driving control mode of pattern 1. The operation of the comfortable driving control mode pattern 1 is started by the operation of setting the comfortable driving control mode from the remote controller 300.

In step S10, the air conditioning control unit 36 performs the air conditioning operation over a predetermined period. Here, the air-conditioning control unit 36 is not different from the normal operation mode, and the up-and-down air direction plate 25 of the air outlet 29b of the indoor unit 100 (see FIG. 2) is substantially horizontal during the cooling operation, and the cold air directly hits a person. Do not. During the heating operation, the vertical air direction plate 25 of the air outlet 29b is directed downward so that the warm air reaches the floor surface. However, this is not the case when the direction of the up / down wind direction plate 105 is changed by the remote controller 300 according to the user's preference.

In step S11, if the air conditioning control unit 36 has not reached the set temperature (No in S11), the process returns to the process of step S10 and continues the normal air conditioning operation. This determination is repeatedly performed once for several minutes to several tens of minutes, for example. When the room temperature reaches the set temperature as time elapses (Yes in S11), the air conditioning control unit 136 proceeds to the process of step S12.
In step S12, the person detection unit 12 detects a person in the air-conditioned room. If an occupant is detected (Yes in S12), the process proceeds to step S13. If no occupant is detected (No in S12), the occupant is detected again in step S12.
In step S13, the person identifying unit 31 determines whether the detected occupant is a person who has been detected in the past. If the person has been detected in the past (Yes in S13), the process proceeds to step S14. If the person has not been detected in the past (No in S13), the process proceeds to step S16.

In step S14, the occupancy time determination unit 32 determines whether or not the difference between the time when the detected occupant was detected last time and the time detected this time (first time) is shorter than a predetermined value T1 (second time). Determine whether. If it is shorter than the predetermined value T1 (Yes in S14), the process proceeds to step S15. If it is longer than the predetermined value T1 (No in S14), the process proceeds to step S16. Here, the threshold value of the predetermined time difference value T1 is, for example, 10 minutes, but may be changed depending on the operation mode or the set temperature. The process of step S14 determines whether or not this person can be considered to be continuously present. Step S14 constitutes a first time determination unit.

In step S <b> 15, the occupancy time determination unit 32 updates the occupancy time of the occupant so as to extend the occupancy time including the time when the occupancy is absent. The process of step S15 determines that this person is continuously in the room, or has temporarily left the room and returned, or was temporarily undetectable but could be detected again. The time is extended. That is, even if the room is absent for a short time, it is determined that the person is present and affected by air conditioning.
In step S16, the occupancy time determination unit 32 resets the detected occupant's occupancy time to zero. In the process of step S16, it is determined that the person has left the room for a long time, and it is reset to zero without extending the occupancy time because it is no longer affected by the air conditioning.
In step S17, the occupancy time determination unit 32 determines whether the detected occupant's occupancy time is equal to or greater than a predetermined value T2 (third time) (> T1). If the occupancy time is equal to or greater than the predetermined value T2 (Yes in S17), the process proceeds to step S18. If the occupancy time is shorter than the predetermined value T2 (No in S17), the process proceeds to step S21.

If the occupancy time is equal to or greater than the predetermined value T2 (Yes in S17), the occupant has been in a state of being too cold or too warm because the occupant has been in the air condition under the same setting for a long time. Yes. Therefore, in step S18, the air conditioning control unit 36 performs control to reduce the rotational speed of the blower fan 23, reduce the air volume, and prevent overcooling or overheating.
Next, in step S19, the occupancy time determination unit 32 determines whether or not the detected occupant's occupancy time is equal to or greater than a predetermined value T3 (fourth time) (> T2). If the occupancy time is equal to or greater than the predetermined value T3 (Yes in S19), the process proceeds to step S20. If the occupancy time is shorter than the predetermined value T3 (No in S19), the process proceeds to step S21.

In step S20, the air-conditioning control unit 36 performs control to increase the set temperature during cooling operation to prevent overcooling, and perform control to prevent overheating by reducing the set temperature during heating operation. The change range of the set temperature is, for example, 1 to 2 degrees. In other words, the occupant is located longer than the predetermined value T2 under the same air conditioning conditions, and is therefore too cold or too warm. Therefore, such a set temperature is adjusted.
In step S21, the air-conditioning control unit 36 determines whether or not an air-conditioning operation stop operation has been performed. If the air-conditioning operation stop operation has not been performed (No in S21), the occupant detection in step S12 is performed. Return to the process. The air conditioning control unit 36 stops the air conditioning operation when an operation for stopping the air conditioning operation is performed (Yes in S21).

With the comfortable operation control mode of this pattern 1, the air conditioner 1 main body adjusts the air volume and the set temperature before the person feels cold because the occupancy time is long, so that the air conditioner 1 body is always kept cool. Comfortable air conditioning can be realized. During heating, the air conditioner 1 main body adjusts the wind direction and the set temperature to prevent overheating before the person feels hot because the occupancy time is long, so that comfortable air conditioning can always be realized.

<Pattern 2>
In Pattern 1, the number of occupants is not limited, but in Pattern 2, a comfortable driving control mode when there are a plurality of occupants will be described.
When there are multiple people in the room, there are individual differences in the experience, so if you reduce the air volume like the control shown in Pattern 1, increase the set temperature during cooling operation, or decrease it during heating operation, Even if one person is comfortable, the other person may be uncomfortable. Pattern 2 describes means for making each person feel comfortable even when there are a plurality of people in the room.

FIG. 5 is a flowchart illustrating the comfortable driving control mode of pattern 2. By the operation of setting the comfortable driving control mode from the remote controller 300, the driving of the comfortable driving control mode pattern 2 is started.
The processes in steps S10 and S11 are the same as the processes in steps S10 and S11 in FIG. Therefore, when the room temperature reaches the set temperature with time, the process proceeds to step S12.
The process of step S12 is the same as the process of step S12 of FIG. In this process, the person detection unit 12 detects a person in the air-conditioned room. If an occupant is detected (Yes in S12), the process proceeds to step S13. If no occupant is detected (No in S12), the occupant is detected again in step S12.

The process of step S13 is the same as the process of step S13 of FIG. In this process, the person identifying unit 31 determines whether the detected occupant is a person who has been detected in the past. If the person has been detected in the past (Yes in S13), the process proceeds to step S14. If the person has not been detected in the past (No in S13), the process proceeds to step S16.

The process of step S14 is the same as the process of step S14 of FIG. In this process, the occupancy time determination unit 32 determines whether or not the difference between the previously detected time (first time) of the detected occupant and the time detected this time is shorter than a predetermined value T1 (second time). Determine whether. If it is shorter than the predetermined value T1 (Yes in S14), the process proceeds to step S15. If it is longer than the predetermined value T1 (No in S14), the process proceeds to step S16. Step S14 constitutes a first time determination unit.

The process of step S15 is the same as the process of step S15 of FIG. In this process, the occupancy time determination unit 32 updates the occupant's occupancy time so as to add the difference between the previously detected time of the detected occupant and the time detected this time. The process of step S15 determines that this person is continuously in the room, or has temporarily left the room and returned, or was temporarily undetectable but could be detected again. The time is extended. That is, even if the room is absent for a short time, it is determined that the person is present and affected by air conditioning.

The process of step S16 is the same as the process of step S16 of FIG. In this process, the occupancy time determination unit 32 resets the detected occupant's occupancy time to zero. In the process of step S16, it is determined that the person has left the room for a long time, and it is reset to zero without extending the occupancy time because it is no longer affected by the air conditioning.

In step S171, the occupancy time determination unit 32 determines whether or not the detected occupant's occupancy time is equal to or greater than a predetermined value T21 (third time) (> T1). If the occupancy time is equal to or greater than the predetermined value T21 (Yes in S171), the process proceeds to step S172. If the occupancy time is shorter than the predetermined value T21 (No in S171), the process proceeds to step S21.
In step S172, the air conditioning control unit 36 moves the left and right wind direction plates 24 and / or up and down in the direction of the occupant who has reached the occupancy time equal to or greater than the predetermined value (T21) (determined by the human detection unit 12 and the human identification unit 31). The time during which the wind direction plate 25 is directed is made shorter than usual, and control is performed to prevent the occupant from being too cold or too warm.

In step S173, the occupancy time determination unit 32 determines whether the detected occupant's occupancy time is equal to or greater than a predetermined value T22 (also the third time) (> T21). If the occupancy time is equal to or greater than the predetermined value T22 (Yes in S173), the process proceeds to step S174. If the occupancy time is shorter than the predetermined value T22 (No in S173), the process proceeds to step S21.

In step S174, the air-conditioning control unit 36 determines that the wind is not directed toward the occupant who has reached the occupancy time equal to or greater than the predetermined value T22 (determined by the human detection unit 12 and the human identification unit 31). And / or the up-and-down wind direction board 25 is controlled and control which prevents too cold or too warm is performed. That is, since it is considered that the occupant is too cold or too warm after a lapse of time from the predetermined value T21, the left and right wind direction plates 24 and / or the up and down wind direction plates 25 are directed. It prevents the occupant from being too cold or too warm than the shortening (step S172).

In step S175, the air-conditioning control unit 36 determines whether or not another person is present, and if it is present (Yes in S175), the process returns to step S13, and the other person's Determine occupancy time. By the processing from step S13 to step S175, the wind-off time for all who meets the determination condition of step S171 (step S172) and the windbreak control of all of the persons who satisfy the determination condition of step S173 (step S174) are controlled. carry out.

In step S191, the occupancy time determination unit 32 determines whether the detected occupancy times of all occupants are equal to or greater than a predetermined value T31 (fourth time) (> T22). If everyone is in the occupancy time equal to or greater than the predetermined value T31 (Yes in S191), it is determined that everyone feels too cold during cooling and feels too warm during heating, and the process proceeds to step S20. If there is a person with a shorter occupancy time (No), the process proceeds to step S21. If it is determined that not all of the occupants are in the room and a predetermined percentage of the occupants (for example, the majority) feel too cold and too warm, the process may proceed to step S20.
The process of step S20 is the same as the process of step S20 of FIG. In this process, the air conditioning control unit 36 performs control to increase the set temperature during cooling operation to prevent overcooling, and performs control to prevent overheating by reducing the set temperature during heating operation. The change range of the set temperature is, for example, 1 to 2 degrees.

The process of step S21 is the same as the process of step S21 of FIG. In this process, the air-conditioning control unit 36 determines whether or not an operation for stopping the air-conditioning operation has been performed. If the operation for stopping the air-conditioning operation has not been performed (No in S21), the occupant detection in step S12 is performed. Return to the process. The air conditioning control unit 36 stops the air conditioning operation when an operation for stopping the air conditioning operation is performed (Yes in S21).

With this comfortable operation control mode, the air conditioner 1 main body adjusts the air volume and the set temperature to make it cool for all occupants during cooling, before they feel cold due to the longer occupancy time. To prevent this, you can always achieve comfortable air conditioning. During heating, the air conditioner 1 itself adjusts the wind direction and set temperature to prevent overheating before it feels hot due to the length of time in the room. realizable.

<Pattern 3>
Even in the same occupancy time, if the amount of activity of a person is different, the temperature that it feels to be too warm and too warm differs, so if the activity amount of the occupant changes, The renewal should be adjusted and air conditioning control to be comfortable. Pattern 3 describes means for realizing comfortable air conditioning in consideration of changes in the amount of activity of the occupants.

FIG. 6 is a flowchart illustrating the comfortable driving control mode of pattern 3. The operation of the comfortable driving control mode pattern 3 is started by the operation of setting the comfortable driving control mode from the remote controller 300.
The processes in steps S10 and S11 are the same as the processes in steps S10 and S11 in FIG. When the room temperature reaches the set temperature with time, the process proceeds to step S12.
The process of step S12 is the same as the process of step S12 of FIG. In this process, the person detection unit 12 detects a person in the air-conditioned room. If an occupant is detected (Yes in S12), the process proceeds to step S13. If no occupant is detected (No in S12), the occupant is detected again in step S12.

In step S141, the activity amount determination unit 33 determines the activity amount of the resident. If the amount of activity is less than or equal to the predetermined value α during the cooling operation (Yes in S141), the process proceeds to step S15, and if greater than the predetermined value α (No in S141), the process proceeds to step S17. If the activity amount is greater than the predetermined value β during heating operation (Yes in S141), the process proceeds to step S15, and if it is equal to or less than the predetermined value β (No in S141), the process proceeds to step S17.

The process of step S15 is the same as the process of step S15 of FIG. In this process, the occupancy time determination unit 32 updates the occupant's occupancy time so as to extend the occupancy time including the time when the occupancy was absent. The process of step S15 determines that this person is continuously in the room, or has temporarily left the room and returned, or was temporarily undetectable but could be detected again. The time is extended. That is, even if the room is absent for a short time, it is determined that the person is present and affected by air conditioning.

On the other hand, in step S141, if the activity amount exceeds the predetermined value α during the cooling operation or the activity amount is less than the predetermined value β during the heating operation, the process proceeds to step S17 without performing the update as in step S15. Therefore, in this case, the occupant's occupancy time is unchanged. In this case, depending on the activity state, it may be hot during the cooling operation and cold during the heating operation, which is the opposite of overcooling and overheating.

The process of step S17 is the same as the process of step S17 of FIG. In this process, the occupancy time determination unit 32 determines whether the detected occupant's occupancy time is equal to or greater than a predetermined value T2 (third time) (> T1). If the occupancy time is equal to or greater than the predetermined value T2 (Yes in S17), the process proceeds to step S18. If the occupancy time is shorter than the predetermined value T2 (No in S17), the process proceeds to step S21.

The process of step S18 is the same as the process of step S18 of FIG. In this process, if the occupancy time is equal to or greater than the predetermined value T2 (Yes in S17), the occupant is too cold or too warm because it has been located for some time under the air conditioning conditions of the same setting. It is in a state. Therefore, in step S18, the air conditioning control unit 36 performs control to reduce the rotational speed of the blower fan 23, reduce the air volume, and prevent overcooling or overheating.

The process of step S19 is the same as the process of step S19 of FIG. In this process, the occupancy time determination unit 32 determines whether the detected occupant's occupancy time is equal to or greater than a predetermined value T3 (fourth time) (> T2). If the occupancy time is equal to or greater than the predetermined value T3 (Yes in S19), the process proceeds to step S20. If the occupancy time is shorter than the predetermined value T3 (No in S19), the process proceeds to step S21.

The process of step S20 is the same as the process of step S20 of FIG. In this process, the air conditioning control unit 36 performs control to increase the set temperature during cooling operation to prevent overcooling, and performs control to prevent overheating by reducing the set temperature during heating operation. The change range of the set temperature is, for example, 1 to 2 degrees. In other words, the occupant is located longer than the predetermined value T2 under the same air conditioning conditions, and is therefore too cold or too warm. Therefore, such a set temperature is adjusted.

Such a comfortable driving control mode enables the following control even when the amount of activity of the occupants is too cold or too warm. That is, at the time of cooling, when the occupant's activity amount is high, the occupancy time is made shorter than the actual occupancy time, thereby delaying the decrease in the air volume of the air conditioner 1 and the change of the set temperature. Air conditioning can be realized. In addition, even during heating, when the amount of activity of the occupants is low, the occupancy time is made shorter than the actual occupancy time, thereby delaying the decrease in the air volume of the air conditioner 1 and the change of the set temperature, thereby making it comfortable. Air conditioning can be realized.

In pattern 3 described above, the number of people in the room is not limited, but the processes in steps S12 to S18 may be repeated for a plurality of people in the room. In addition, the set temperature may be adjusted when the occupancy time condition is satisfied for a predetermined ratio (for example, a majority) of the occupants instead of all the occupants (step S19).
In the above-described pattern 3, when the activity amount of the occupant is too cold and does not contribute to overheating, the occupancy time is not updated (No in step S141), but the state remains for a predetermined time (for example, 5 minutes). ) When it continues, the state is clearly different from the case where the user stays in the room, so the staying time may be reset to zero (step S16), or the staying time may be subtracted.

In addition, this invention is not limited to the above-mentioned Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Moreover, it is also possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

Each of the above-described configurations, functions, processing units, processing means, and the like may be realized by hardware by designing a part or all of them with, for example, an integrated circuit. Further, each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files for realizing each function can be stored in a memory, a recording device such as a hard disk or SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD.
Further, the control lines and information lines indicate what is considered necessary for the explanation, and not all the control lines and information lines on the product are necessarily shown. In practice, it can be considered that almost all the components are connected to each other.

DESCRIPTION OF SYMBOLS 1 Air conditioner 12 Person detection part 31 Person identification part 32 Residential time determination part 33 Activity amount determination part 100 Indoor unit S14 1st time determination part

Claims

An indoor unit that blows out the wind,
A human detection unit for detecting a person;
An occupancy time determination unit that determines the time at which the person detected by the person detection unit is in the room,
An air conditioning control unit that performs control to change any one or more of the wind direction, the air volume, and the set temperature based on the occupancy time determined by the occupancy time determination unit. Harmony machine.
A first time determination unit that determines a time from when the person detection unit no longer detects a person until it is detected again;
The occupancy time determination unit updates the occupancy time including the first time when the first time determined by the first time determination unit is less than the second time. The air conditioner according to claim 1.
An activity amount determination unit for determining the activity amount of the person,
The air conditioner according to claim 1, wherein the occupancy time determination unit updates the occupancy time according to the activity amount.
An activity amount determination unit for determining the activity amount of the person,
The air conditioner according to claim 2, wherein the occupancy time determination unit updates the occupancy time according to the activity amount.
The air conditioner according to claim 2, wherein the air conditioning control unit reduces the air volume when the occupancy time exceeds a third time longer than the second time.
The air conditioner according to claim 4, wherein the air conditioning control unit reduces the air volume when the occupancy time exceeds a third time longer than the second time.
A person identification unit that identifies a person detected by the person detection unit includes the occupancy time determination unit and the first time determination unit to determine the occupancy time for each identified person,
The air-conditioning control unit reduces the time to blow the wind according to the length of the third time for those who have exceeded the third time longer than the second time after the update. The air conditioner according to claim 2, wherein the air conditioner is not applied or conditioned air is not applied.
The air conditioning control unit reduces the air conditioning intensity by changing the set temperature when the updated occupancy time exceeds a fourth time longer than the third time. 5. The air conditioner according to 5.
The air conditioning control unit reduces the air conditioning intensity by changing the set temperature when the updated occupancy time exceeds a fourth time longer than the third time. 6. The air conditioner according to 6.
The air conditioning control unit reduces the air conditioning intensity by changing the set temperature when the updated occupancy time exceeds a fourth time longer than the third time. 7. The air conditioner according to 7.