JP2013040693A - Indoor air conditioner and indoor air-conditioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor air conditioner and an indoor air-conditioning method for maintaining comfort in a room and saving energy, by performing proper air-conditioning control according to a state of a person in the room.SOLUTION: This indoor air conditioner includes a human density detecting system 1 and an air conditioning system 2. The human density detecting system 1 detects human density in an office room R, to be output to the air-conditioning system 2. The air-conditioning system 2 performs the air-conditioning control for relieving an air-conditioning condition of the indoor air conditioner in an area in the office room where the human density is low than the area where the human density is high.

Description

  The present invention relates to an indoor air-conditioning apparatus and an indoor air-conditioning method that control a plurality of air conditioners installed indoors to air-condition a room.

  When air-conditioning indoors such as office spaces in office buildings, the so-called multi-air cooling package system for buildings, in which a plurality of air conditioners are arranged in a ceiling, is increasing. In the air conditioning system of the multi-air cooling package system for buildings, a plurality of outdoor units are installed in the office space of a large room, and a plurality of indoor units are connected to each outdoor unit for operation. In a conventional multi-air cooling package for buildings, a plurality of indoor units installed are started and stopped in accordance with operation. Here, the indoor unit in operation is operated by repeatedly controlling the thermostat ON / OFF by individually controlling the refrigerant flow rate according to the air conditioning load.

  However, multi-air cooling package equipment for buildings often shows a difference between the catalog performance value and the equipment performance during actual operation, and may not be able to exhibit sufficient performance. For example, an energy load control system that detects presence / absence information regarding the presence / absence of a person in a room and controls the indoor unit based on the presence / absence information is disclosed (for example, a patent). Reference 1).

  In this energy load control system, a unit section obtained by dividing a room into a personal space is set, and the presence / absence information of a person in the unit section, or a rough number of persons or one / plurality is detected by a high-precision human body detection sensor. . From this detected information, if a person stays in the unit area, the output of equipment in the energy load target area such as an air conditioner is increased, and if a person stays, the energy load such as an air conditioner Control is performed to reduce the output of the devices in the target area.

JP 2010-257611 A (Claim 6, [0048], [0076] to [0077], [0091] to [0094], etc.)

What is detected by the detection sensor is information such as the presence / absence of a person in the unit block, or the approximate number of people or one / plurality. However, the control using such information is not specifically disclosed. Therefore, there has been a problem that it is not clear how to appropriately perform air-conditioning control according to the staying situation of the person and to maintain both indoor comfort and energy saving.

  Therefore, an object of the present invention is to provide an indoor air conditioner and an indoor air conditioner method that perform appropriate air conditioning control according to the staying state of a person in the room, and can achieve both maintenance of indoor comfort and energy saving. There is.

  An indoor air conditioner according to the present invention that has solved the above problems is an air conditioner that performs indoor air conditioning, a human detection sensor that detects a staying state of a person in the room, and a person in the room based on the detection result of the human detection sensor. A human density acquisition means for acquiring a density, and an air conditioning control device for controlling the operation of the air conditioner based on the indoor human density acquired by the human density acquisition means. It is characterized in that air conditioning control in which the air conditioning conditions in the air conditioner are relaxed is performed on an area where the air density is low compared to an area where the human density in the room is high.

  In the indoor air conditioner according to the present invention, the air conditioner is operated in accordance with the load generation situation in the room. At this time, the load generation situation in the room can be determined based on the staying state of the person, and when there are many people staying in the room, it can be determined that the load on the room is large. When the number is small, it can be determined that the indoor load is small. Moreover, a human detection sensor is used about the presence or absence of a person's stay.

  Under such an idea, in the indoor air conditioner according to the present invention, the human density is acquired by the human density acquisition means, and the area where the human density is low in the room is higher than the area where the human density is high in the room. Air conditioning control is performed with relaxed air conditioning conditions. For this reason, air-conditioning control according to human density can be performed. Therefore, it is possible to perform appropriate air-conditioning control according to the staying state of the person in the room, and to achieve both maintenance of indoor comfort and energy saving.

  In addition to setting a minimum detection area that divides a room into a plurality of areas, a detection area having a predetermined number of minimum detection areas is set, and the human detection sensor is a person's stay in the minimum detection area included in the detection area. The state is detected, and the human density acquisition means can acquire the human density of the predetermined area in the room based on the staying state of the person in the minimum detection area detected by the human detection sensor.

  As described above, when the human detection sensor detects the staying state of the person in the minimum detection area included in the detection area, the number of human detection sensors can be aggregated to the number corresponding to the number of detection areas. Further, the area for detecting the human density in the room by acquiring the human density of the predetermined area in the room based on the staying state of the person in the minimum detection area detected by the human detection sensor by the human density acquisition means. It can be set with a degree of freedom.

  In addition, the human density acquisition means determines that the human density of the predetermined area is high when the number of the minimum detection areas in which the stay state is present among the minimum detection areas in the predetermined area exceeds a predetermined value. When the number of minimum detection areas in which the state is an existing state is a predetermined value or less, it can be determined that the human density of the predetermined area is low.

  In this way, by determining the human density of the detection area according to the number of the minimum detection areas in which the stay state is the presence state among the minimum detection areas in the predetermined area, the human density of the predetermined area is easily obtained. be able to.

  Furthermore, the human density acquisition means includes a recording device that records a temporal change of the person's staying state, and can acquire the human density of a predetermined area based on the temporal change of the person's staying state.

  In this way, by acquiring the human density of the predetermined area based on the temporal change of the staying state of the person, even if the staying state changes in a short time, the rapid change of the human density in the predetermined area Can be suppressed. As a result, frequent control changes of the air conditioner can be prevented, and complexity of control can be eliminated.

  An address is assigned to each of the plurality of minimum detection areas, and a plurality of air conditioners are arranged corresponding to the plurality of minimum detection areas, and the air conditioning control device has an address assigned to the minimum detection area. Then, the air conditioning control for the plurality of air conditioners can be performed by associating with each of the plurality of air conditioners.

  In this way, the address assigned to the minimum detection area is associated with each of the plurality of air conditioners and air conditioning control is performed on the plurality of air conditioners, thereby performing weighting control according to the characteristics of the minimum detection area. be able to.

  Furthermore, based on the attribute of the minimum detection area, the control content of the air conditioner associated with the address can be weighted.

  In this way, the control content of the air conditioner associated with the address is weighted based on the attribute of the minimum detection area. Here, the attribute of the minimum detection area is an attribute that the possibility of a person staying clearly differs from other minimum detection areas, or an attribute that preferentially air-conditions in a space for centralized thinking. . Therefore, air conditioning matched to the characteristics of the minimum detection area can be performed.

  Further, the apparatus further includes human detection means for detecting the presence of a person in the room, and further includes, as an air conditioner, a plurality of task air conditioners that air-condition the indoor narrow area, and an ambient air conditioner that air-conditions the indoor wide area. The air conditioning control device controls the air conditioning of the plurality of task air conditioners based on the indoor density obtained by the human density obtaining means, and performs the air conditioning of the ambient air conditioner based on the detection result of the person detecting means. Control can be performed.

  In this way, when performing task / ambient air conditioning that performs task air conditioning and ambient air conditioning, by performing air conditioning control of task air conditioning, air conditioning of the entire room is performed by ambient air conditioning, and individual air conditioning is performed by task air conditioning. Can do. Therefore, it is possible to more appropriately achieve both comfort and energy saving. Here, the human detection means is a sensor that detects whether one person is in the room or no one is in the room, and can be provided separately from the human detection sensor or can be used in combination with the human detection sensor. it can.

  Furthermore, it is provided with a occupancy duration acquisition means for acquiring the occupancy duration of the person in the room, and relaxes the air conditioning condition of the air conditioner when the occupancy duration of the person exceeds a predetermined threshold value. be able to.

  In this way, when the duration of a person's occupancy exceeds a predetermined threshold, the air conditioning condition of the air conditioner is relaxed so that the air conditioning condition of the air conditioner can be adjusted within a range that is not normally recognized by the person staying. Can be relaxed. Therefore, energy saving can be achieved without impairing indoor comfort. Here, as an aspect of relaxing the air conditioning condition of the air conditioner, the set temperature can be increased when the air conditioner performs cooling, and the set temperature can be decreased when performing heating. Moreover, when performing ventilation operation, the amount of ventilation can be reduced. Further, the cooling operation can be switched to the air blowing operation.

  In addition, a plurality of predetermined threshold values are set, and the air conditioning condition of the air conditioner can be relaxed every time the plurality of threshold values are exceeded.

  As described above, by reducing the air conditioning conditions of the air conditioner every time a plurality of threshold values are exceeded, further energy saving can be achieved without impairing the comfort of the room.

  Furthermore, the air conditioner includes an indoor unit and an outdoor unit, and is an air conditioner that circulates and supplies refrigerant between the indoor unit and the outdoor unit, and starts control by the air conditioning control device when the air conditioner starts up. Can do.

  Conventionally, when an air conditioner starts up, the outdoor unit is generally operated at the maximum capacity. However, the outdoor unit usually has a higher operating efficiency when the capacity is about 50% than when the capacity is 100%. For this reason, in the present invention, when the air conditioner is started, control by the air conditioning control device is started. For example, when there are few people in the room, the capacity of the outdoor unit is set to about 50%. Therefore, the operation efficiency in the outdoor unit can be increased.

  The air conditioner includes an indoor unit and an outdoor unit, and circulates and supplies the refrigerant between the indoor unit and the outdoor unit. The air conditioning controller is a person in the room acquired by the human density acquisition unit. Based on the density, the evaporation temperature of the refrigerant in the outdoor unit can be set.

  Thus, by setting the refrigerant evaporation temperature in the outdoor unit based on the indoor density acquired by the human density acquisition unit, the latent heat treatment capability of the outdoor unit can be changed according to the required load of the indoor unit. Highly efficient operation can be performed. Therefore, it is possible to perform appropriate air conditioning control according to the staying state of the person in the room, and to further achieve both the maintenance of the indoor comfort and the energy saving.

  On the other hand, the indoor air-conditioning method according to the present invention that solves the above-described problem obtains the human density in the room based on the detection result of the human detection sensor that detects the staying state of the person in the room, and the acquired human density in the room. Based on the above, when air conditioning control of an air conditioner that performs indoor air conditioning is performed by the air conditioning control device, the air conditioning condition in the air conditioner is relaxed for the area where the human density in the room is low than in the area where the human density in the room is high It is characterized by air conditioning control.

  According to the indoor air-conditioning apparatus and the indoor air-conditioning method according to the present invention, it is possible to perform appropriate air-conditioning control according to the staying state of the person in the room, and to achieve both maintenance of indoor comfort and energy saving.

It is a block block diagram of the indoor air conditioner which concerns on this embodiment. It is a conceptual diagram of the room | chamber interior provided with the indoor air conditioner in the building. It is explanatory drawing of the address attached | subjected to the indoor minimum detection area. (A) is a figure which shows the stay state of the minimum detection area, (b) is a figure which shows the human density and output signal of a control object area, (c) is a figure which shows the control state of an air conditioner. It is a flowchart which shows the control procedure in an indoor air conditioner. (A) is a figure which shows the stay state of the minimum detection area, (b) is a figure which shows an output signal, (c) is a figure which shows the control state of an air conditioner, (d) is another figure of an air conditioner. It is a figure which shows a control state. It is a flowchart which shows the process sequence of the control apparatus which performs the temperature step setting according to occupancy duration. It is a graph which shows the example of the passage of time and the time-dependent change of the preset temperature of an air conditioner. It is a figure which shows the time-dependent change of the person's staying state in a room. It is a flowchart which shows the process sequence of the air-conditioning control which considered human density in the occupancy duration. It is a graph which shows the other example of a time passage and the time-dependent change of the preset temperature of an air conditioner. It is a map which shows the correspondence of the address allocated to the minimum detection area, and control of an indoor air conditioner. It is a figure which shows the example of the weighting of the minimum detection area in a office room. It is a conceptual diagram of the office room where task ambient air conditioning is performed. It is a flowchart which shows the procedure of the control which adjusts the evaporation temperature of an outdoor air conditioner. It is a flowchart which shows the procedure of the demand control of an outdoor air conditioner. It is a conceptual diagram which shows the relationship between an outdoor air conditioner and an indoor air conditioner.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In each embodiment, portions having the same function are denoted by the same reference numerals, and redundant description may be omitted. In the following embodiments, the numerical values for controlling the temperature, time, etc. can be set and changed as appropriate. In the following embodiments, cooling is assumed as a form of air conditioning.

[Overall control]
FIG. 1 is a block diagram of an indoor air conditioner according to the present embodiment, and FIG. 2 is a conceptual diagram of the room provided with the indoor air conditioner in the building according to the embodiment of the present invention. As shown in FIGS. 1 and 2, the indoor air conditioner according to the present embodiment has an office room R in an office building. The indoor air-conditioning apparatus according to the present embodiment is a multi-air cooling package type indoor air-conditioning apparatus for buildings. When performing indoor air-conditioning control, the office room R includes a plurality of control target areas, and in this embodiment, 12 control target areas. Control is performed by dividing into two. Each control target area includes two detection areas. Furthermore, each of the detection areas includes four minimum detection areas. Therefore, the office room R includes 12 × 2 = 24 detection areas and 12 × 8 = 96 minimum detection areas. Each of the 96 minimum detection areas included in the office room R is assigned an address.

  For example, the left back side of the office room R is divided into four control target areas E1 to E4 as shown in FIG. Each of the control target areas E1 to E4 is divided into eight minimum detection areas. Therefore, here, 4 × 8 = 32 minimum detection areas are formed. Among them, the address “001” is assigned to the minimum detection area in the first row and the first column, and the address “002” is assigned to the minimum detection area in the second row and the first column. Thus, “001” to “004” in the first column, “005” to “008” in the second column, “009” to “012” in the third column, “013” to “016” in the fourth column Each address is given. Further, although not shown, addresses are similarly assigned to the minimum detection areas in the control target area other than the division at the left back.

  The indoor air conditioner includes a human density detection system 1 and an air conditioning system 2. The human density detection system 1 is a human density acquisition unit of the present invention. The human density detection system 1 includes a controller 10, human detection sensors 11A to 11F, 12A to 12F, 13A to 13F, and 14A to 14F. Hereinafter, for convenience of explanation, the human detection sensors 11A to 11F may be referred to as the human detection sensor 11. Similarly, the human detection sensors 12A to 12F, the human detection sensors 13A to 13F, and the human detection sensors 14A to 14F may be referred to as human detection sensors 12, 13, and 14, respectively.

  The air conditioning system 2 includes an air conditioning control device 20, a left outdoor air conditioner 21A, a right outdoor air conditioner 21B, left indoor air conditioners 22A to 22F, and right indoor air conditioners 23A to 23F. The outdoor air conditioners 21A and 21B are installed outside the office room R and outside the office building, and the indoor air conditioners 22A to 22F and 23A to 23F are installed in the office room R. The indoor air conditioners 22A to 22F and 23A to 23F may also be referred to as the indoor air conditioner 22 and the indoor air conditioner 23, respectively, for convenience of explanation.

  Furthermore, the indoor air conditioner includes indoor temperature measuring devices 3A to 3F and 4A to 4F. The room temperature measuring devices 3 </ b> A to 3 </ b> F and 4 </ b> A to 4 </ b> F are provided in the office room R and are electrically connected to the air conditioning control device 20. In addition, the controller 10 and the air conditioning control device 20 are electrically connected to each other. The room temperature measuring devices 3A to 3F and 4A to 4F may also be referred to as the room temperature measuring device 3 and the room temperature measuring device 4 for convenience of explanation.

  As shown in FIG. 2, the left outdoor air conditioner 21 </ b> A is connected to the left indoor air conditioners 22 </ b> A to 22 </ b> F via piping, and circulates and supplies refrigerant to the left indoor air conditioners 22 </ b> A to 22 </ b> F. Similarly, the right outdoor air conditioner 21B is connected to the right indoor air conditioners 23A to 23F via piping, and circulates and supplies refrigerant to the right indoor air conditioners 23A to 23F.

  The left indoor air conditioners 22A to 22F are positions obtained by dividing the left side area on the ceiling of the office room R into three parts in the width direction when seen in a plan view, and 1/4 positions and 3/4 when divided into four parts in the depth direction. It is arranged at each position. Thus, the left room air conditioners 22A to 22F are arranged at equal positions in the left area of the office room R. Similarly, the right room air conditioners 23A to 23F are arranged at equal positions in the right region of the office room R. Moreover, indoor air conditioner 22A-22F, 23A-23F is arrange | positioned in the center position of each control object area, and air-conditions with respect to the control object area provided with eight minimum detection areas, respectively. Thus, the indoor air conditioners 22A to 22F and 23A to 23F are associated with each control target area.

  The left inner person detection sensors 11A to 11F are respectively disposed at both positions in the depth direction of the left indoor air conditioners 22A to 22C, and the left inner person detection sensors 12A to 12F are both positions in the depth direction of the left indoor air conditioners 22D to 22F. Respectively. Further, the right outside person detection sensors 13A to 13F are respectively disposed at both sides in the depth direction of the right room air conditioners 23A to 23C, and the right inside person detection sensors 14A to 14F are both sides in the depth direction of the left room air conditioners 23D to 23F. It is arranged at each position.

  The human detection sensors 11 to 14 are all arranged at the center position of the detection area including the four minimum detection areas arranged in 2 × 2 rows, and the human detection sensors 11 to 14 are arranged in the four minimum detection areas in the detection area. The staying state is detected as an existing state or an absent state. The detection area is an area where the human detection sensors 11 to 14 can detect the staying state of the person in the minimum detection area. When detecting one person's stay state, the person detection sensors 11 to 14 detect the stay state as “present” when there is one person in the minimum detection area, and detect “not present” when there is no person. . The human detection sensors 11 to 14 transmit the detected stay states of all areas to the controller 10.

  The left room temperature measuring devices 3A to 3F are arranged outside the left room air conditioning devices 22A to 22F and near the walls. Furthermore, the right room temperature measuring devices 4A to 4F are arranged outside the right room air conditioning devices 23A to 23F and near the walls. The indoor temperature measuring devices 3A to 3F and 4A to 4F detect the temperature in the vicinity of the area where the indoor temperature measuring devices 3A to 3F and 4A to 4F are installed in the room. The indoor temperature measuring devices 3 </ b> A to 3 </ b> F and 4 </ b> A to 4 </ b> F transmit temperature information regarding the detected temperature to the air conditioning control device 20. The indoor temperature measuring devices 3A to 3F and 4A to 4F are arranged in the control target area, and are used as temperatures used when controlling the indoor air conditioners 22 and 23 provided in the control target areas. The temperature of each is detected.

  In the outdoor air conditioners 21 </ b> A and 21 </ b> B and the indoor air conditioners 22 </ b> A to 22 </ b> F and 23 </ b> A to 23 </ b> F, air conditioning control is performed based on a control signal corresponding to the set temperature transmitted from the air conditioning controller 20.

  The controller 10 records the change over time of the staying state transmitted from the human detection sensors 11 to 14 as a detection result of the human detection sensors 11 to 14 for a certain period of time. The controller 10 calculates the human density of each control target area in the office room R based on the recorded stay state. The calculation of the human density in the control target area is performed based on the staying state in the minimum detection area, for example, as shown in FIG. The control target area corresponds to a predetermined area of the present invention, and is a human density calculation area that calculates and calculates human density. The procedure for detecting the density based on the stay state will be described later. These controller 10 and human detection sensors 11 to 14 constitute a human density detection system 1. Further, the controller 10 includes the recording apparatus of the present invention. The controller 10 transmits the calculated human density to the air conditioning control device 20.

  The air conditioning controller 20 sets the evaporating temperature of the outdoor air conditioners 21A and 21B and the indoor air conditioner based on the human density transmitted from the controller 10 and the temperature information transmitted from the room temperature measuring instruments 3A to 3F and 4A to 4F. Set temperatures and operation modes of 22A to 22F and 23A to 23F are calculated. The air conditioning control device 20 transmits the evaporation temperature setting information related to the calculated evaporation temperature of the outdoor air conditioners 21A and 21B to the outdoor air conditioners 21A and 21B, respectively. Moreover, the air-conditioning control apparatus 20 transmits the set temperature information and operation mode information regarding the calculated set temperatures and operation modes of the indoor air conditioners 22A to 22F and 23A to 23F to the indoor air conditioners 22A to 22F and 23A to 23F, respectively.

  Next, a control procedure in the indoor air conditioner according to the present embodiment will be described. FIG. 5 is a flowchart showing a control procedure in the indoor air conditioner according to the present embodiment. The control in the indoor air conditioner is similarly performed for each of the plurality of indoor air conditioners 22A to 22F and 23A to 23F. Here, the indoor air conditioners 22A to 22F and 23A to 23F will be described as the indoor air conditioner 22. As shown in FIG. 5, in the indoor air conditioner according to the present embodiment, air conditioning control by the air conditioning control device 20 is started at the air conditioning start permission time, which is 8 am in the present embodiment.

  When the air conditioning control is started, the outdoor air conditioners 21A and 21B and the indoor air conditioner 22 start operation (S1). In the indoor unit, operation control is performed with a set temperature initial value X, for example, 26 ° C. Next, air conditioning control considering human density is started. Therefore, the controller 10 starts detecting the human density based on the stay state transmitted from the human detection sensors 11 to 14 (S2). Here, the procedure for detecting the human density will be described.

  As shown in FIG. 1, the controller 10 detects the staying state of the person in each minimum detection area in the control target area based on the staying state transmitted from the human detection sensors 11 to 14, and in each minimum detection area. Acquire person's presence / absence information regarding stay status. The staying state in this minimum detection area is shown in FIG. When the presence / absence information of the person is acquired, as shown in FIG. 4B, the presence / absence information of the person in the past predetermined time, for example, 15 minutes in each minimum detection area in the control target area is collected every minute. . From the stay state of each minimum detection area in the control target area for 15 minutes, the human density in each control target area is detected.

  In FIG. 4A, each of the eight addresses with addresses “001” to “008” in the first control target area E1 used when detecting the human density of the first control target area E1 in FIG. The presence / absence information of the person in the minimum detection area is shown. The presence / absence information of the person in the minimum detection area in the first control target area E1 is detected by the person detection sensor 11 and output.

  Here, for example, in the minimum detection area whose address is “001”, people are staying at “1 minute to 4 minutes”, “11 minutes to 28 minutes”, “31 minutes to 43 minutes”,. In addition, there are no people in “5 minutes to 10 minutes”, “29 minutes to 30 minutes”, “44 minutes to”, and so on. Similarly, in the minimum detection area of “002”, a person stays at “3 to 16 minutes” and “19 to 43 minutes”, and there is no person at “1 to 2 minutes” and “17 to 18 minutes”. It has become.

  In FIG. 4B, the number of stays for 1 minute and the total number of stays for 15 minutes in the first control target area E1 are displayed. The number of stays per minute is the total number of areas where people are staying in the eight minimum detection areas in the first control target area E1, and is displayed as the number of persons on the upper side of FIG. As specific numbers, “1 minute”, “2 minutes”, “3 minutes” “4 minutes” “5 minutes” “6 minutes” “7 minutes” “8 minutes” “9 minutes” “10 minutes” “ “1” “1” “2” “2” “1” “1” “1” “1” in the order of “11 minutes” “12 minutes” “13 minutes” “14 minutes” “15 minutes”. The numbers “2” “2” “6” “7” “7” “8” “7”... Are displayed. These numbers become the “present” numbers.

  Further, the total number of stays for 15 minutes is the total number of areas where people are staying in the eight minimum detection areas in the first control target area E1 every 15 minutes. The total number of additions. In order to obtain the total number of stays for 15 minutes, 15 × 8 = 120 presence / absence information is collected. In the example shown in FIG. 4B, the total number of stays is “1 to 15 minutes”, “2 to 16 minutes”, “3 to 17 minutes”, “4 to 18 minutes”, and “5 to 19 minutes”. In this order, the numbers “49”, “54”, “58”, “61”, and “65” are represented as the total number of “present”.

  In addition, when the total number of stays within a predetermined range in the past predetermined time is 60 or more corresponding to a predetermined congestion threshold, which is 50% of the total in this embodiment, the control target area is “present / congested” Is determined. Here, the past predetermined time is 15 minutes, and the predetermined range is the control target area. Further, if the total number of stays is less than the congestion threshold and is a quiet threshold, which is 1 or more in this embodiment, it is determined that the control target area is “present / low”. Further, when the total number of stays is 0, it is determined that the control target area is “absent”. In addition, the threshold value for making these determinations can be set as appropriate.

  For example, in each control target area, “stop” and “fan” are made corresponding to “absence”, “absence / absence”, “absence / congestion” in each control target area by making such a determination in consideration of the temporal change of the presence / absence information. Consider a case where control for switching the operation of “cooling” is performed. In this case, as shown in FIG. 4C, the number of times of switching the operation of the indoor air-conditioning equipment can be reduced as compared with the air-conditioning control that does not simply consider the temporal change of the presence / absence information.

  For example, in FIG. 6A in which the stay information similar to that in FIG. 4A is detected, “absence”, “present / non-occupied”, “present / crowded” are output without considering the temporal change of the present / absent information. In this case, as shown in FIG. 6B, “absence”, “present / non-occupied”, and “present / congested” are frequently output. As a result, as shown in FIG. 6C, the operation of the air conditioner is frequently switched, which is not preferable from the viewpoint of protecting the indoor air conditioner.

  In this way, after calculating the human density of the control target area to be controlled, the controller 10 determines whether the human density has changed between “absent”, “present / confused”, and “present / crowded”. In this case, the changed human density is output to the air conditioning controller 20. The air conditioning control device 20 stores the human density in the control target area output from the controller 10, and the human density output immediately before the determination is “absent”, “present / unexploited”, or “present / congested”. Is determined (S3).

  As a result, when it is determined that the human density in the control target area is “absent”, the indoor air conditioner 22 is continuously operated as it is. Thereafter, it is determined whether or not the state where the human density in the control target area is “absent” has passed for 30 minutes (S4). As a result, when it is determined that the state where the human density in the control target area is “absent” has not elapsed for 30 minutes, the process returns to step S2 to detect the human density in the control target area.

  On the other hand, when it is determined that the state where the human density in the control target area is “absent” has passed for 30 minutes, it is considered that air conditioning in the control target area is not necessary. Therefore, in this case, the indoor air conditioner 22 is stopped (S5). Then, the stop time of the indoor air conditioner 22 is measured, and it is determined whether or not the stop time has passed 30 minutes (S6).

  As a result, when it is determined that the stop time has not passed 30 minutes, the indoor air conditioner 22 is kept stopped until the stop time has passed 30 minutes. Further, when it is determined that the stop time has passed 30 minutes, it is determined whether or not to restart the operation of the air conditioner. For this purpose, the process returns to step S2 to detect the human density in the control target area.

  Thus, when the human density in the control target area is “absent”, air conditioning is performed at the initial set temperature for a certain period, in this embodiment, for 30 minutes. In addition, the indoor air conditioner 22 is stopped when 30 minutes of “absent” has elapsed. For this reason, even when the human density is “absent”, a certain degree of air conditioning can be maintained.

  Moreover, since the indoor air conditioner 22 is stopped when the state where the human density is “absent” has passed 30 minutes, it is possible to prevent unnecessary air conditioning from being performed, and when the stop state has passed 30 minutes. Thus, it is determined whether or not to resume the operation of the indoor air conditioner 22. For this reason, even when the human density changes from “absent” to “present”, air conditioning can be resumed from a state in which the air conditioning state in the room is maintained to some extent, so that the comfort level in the room can be appropriately maintained. . It should be noted that the time of “30 minutes” in step S4 and step S6 can be appropriately changed.

  In step S3, when the human density in the control target area output from the controller 10 is “present / unexploited”, it is determined whether there is an influence of solar radiation (S7). As a result, when there is an influence of solar radiation and the temperature is rising due to the influence of solar radiation, the set temperature of the indoor air conditioner 22 is set to the initial set temperature even when the human density is “existing and quiet”. The air conditioning operation is performed by adjusting to a certain X ° C. (S15). Note that the human detection sensors 11 to 14 can also detect the background temperature of the minimum detection area. For this reason, the presence or absence of solar radiation can be detected simultaneously with the staying state of the person by the human detection sensors 11 to 14 and the like.

  On the other hand, when it is determined that there is no influence of solar radiation, it is determined whether or not the human density in the immediately preceding control target area is “absent” (S8). As a result, when it is determined that the human density in the immediately preceding control target area is “absent”, the indoor air conditioner 22 is operated with the set temperature set to the set temperature initial value X ° C. (S9). If it is determined that the human density in the immediately preceding control target area is not “absent”, the state of the indoor air conditioner 22 is maintained as it is (S10).

  Then, it is determined whether or not the state where the human density in the control target area is “existing / disengaged” continues for 30 minutes (S11). As a result, when it is determined that the state where the human density in the control target area is “present / unexploited” does not continue for 30 minutes, the process returns to step S2 to detect the human density in the control target area.

  On the other hand, if it is determined that the state where the human density in the control target area is “existing and quiet” continues for 30 minutes, the set temperature of the indoor air conditioner 22 is set to (X + 2) ° C., here 28 ° C. The setting of the indoor air conditioner 22 is changed so as to switch to the operation (S12). Thereafter, the room temperature transmitted from the left room temperature measuring device 3 is acquired, and it is determined whether or not the room temperature exceeds (X + 2) ° C., which is the temperature set in step S12 (S13).

  As a result, when it is determined that the room temperature does not exceed (X + 2) ° C., it is determined whether or not 30 minutes have elapsed since the setting of the indoor air conditioner 22 was changed (S14). As a result, when it is determined that 30 minutes have not elapsed, the process returns to step S13, and the room temperature is compared with the set temperature. On the other hand, if it is determined that 30 minutes have elapsed, the process returns to step S2, the human density in the control target area is detected, and the control is continued.

  Furthermore, when it is determined in step S13 that the room temperature has exceeded (X + 2) ° C., the set temperature of the indoor air conditioner 22 is adjusted to X ° C., which is the initial set temperature (S15). Thereafter, the process returns to step S2, the human density in the control target area is detected, and the control is continued.

  On the other hand, if it is determined in step S3 that the human density output from the controller 10 is “present / crowded”, the set temperature of the indoor air conditioner 22 is adjusted to the initial set temperature X ° C. (S15). . Thereafter, the process returns to step S2, the human density in the control target area is detected, and the control is continued.

  Thus, in the air conditioning control device according to the present embodiment, the human density in the room is acquired by the human density detection system 1. At this time, air-conditioning control is performed on an area where the human density in the room is low, which relaxes the air-conditioning condition by the indoor air-conditioning device 22 as compared with an area where the human density in the room is high. For this reason, the indoor air conditioner 22 is operated in the area where the person stays, and the operation of the indoor air conditioner 22 is stopped in the area where the person does not stay. Thus, the fan power of the indoor unit can be reduced, and air conditioning control according to the human density can be performed. Therefore, it is possible to perform appropriate air-conditioning control according to the staying state of the person in the room, and to achieve both maintenance of indoor comfort and energy saving.

  At this time, it is considered that variation occurs in the planar temperature distribution in the room. However, in an area where a person stays, operation control is performed so that each indoor air conditioner 22 has a set temperature. Therefore, the indoor environment can be kept comfortable. Furthermore, in the area where the human density is low, the indoor heat generation is considered to be small. For this reason, comfort can be maintained by raising preset temperature or giving an airflow feeling by ventilation operation.

  Moreover, in the said embodiment, in detecting the human density of a control object area, the staying state of the person in the some minimum detection area in a control object area is used. For this reason, the human density of the area to be controlled can be easily acquired.

  Furthermore, in the said embodiment, it is supposed that the driving | operation change of the indoor air conditioner 22 will be performed every 30 minutes. For this reason, it is possible to prevent frequent operation switching. Such an operation change cycle (minimum operation holding time) can be set to an appropriate time other than 30 minutes.

  In addition, the human density in the room is acquired based on the temporal change in the staying state of the person in the office room. Specifically, when detecting the human density of the control target area, the stay state of the minimum detection area for 15 minutes in the control target area is used. For this reason, even if it is a case where the congestion state in a office room changes in a short time, the rapid change of the human density in a control object area can be suppressed. As a result, frequent control changes of the indoor air conditioner 22 can be prevented, and complexity of control can be eliminated.

  When the human detection sensor detects the staying state of the person in the minimum detection area included in the detection area, the number of human detection sensors can be aggregated to the number corresponding to the number of detection areas. Further, the area for detecting the human density in the room by acquiring the human density of the predetermined area in the room based on the staying state of the person in the minimum detection area detected by the human detection sensor by the human density acquisition means. It can be set with a degree of freedom.

[Temperature level setting according to the duration of the room]
Further, in the indoor air conditioner according to the present invention, the temperature of the human body is set by setting the set temperature of the indoor air conditioner 22 according to the person's occupancy duration (hereinafter simply referred to as “occupancy duration”). The operation control of the indoor air conditioner 22 can be performed in accordance with the cool feeling. The occupancy duration is acquired by the air conditioning controller 20 which is the occupancy duration acquisition means of the present invention. Hereinafter, an example of control in consideration of occupancy duration will be described. FIG. 7 is a flowchart showing a processing procedure of air-conditioning control for setting a temperature step according to the occupancy duration.

  As shown in FIG. 7, in the control by the air conditioning control device that sets the temperature stage according to the occupancy duration, the air conditioning control device 20 performs the air conditioning start permission time at 8:00 am as in the case of the overall control described above. Start air conditioning control. When the air conditioning control is started, the outdoor air conditioners 21A and 21B and the indoor air conditioner 22 start operation (S21), and then the controller 10 in the human density detection system 1 detects the human density in the control target area ( S22). The controller 10 outputs the detected human density to the air conditioning control device 20.

  Next, in the air conditioning control device 20, it is determined whether the human density output from the controller 10 is “present” or “absent” (S23). If it is determined that the human density is “absent”, it is determined whether or not the “absent” time continues for 30 minutes (S24). If it is determined that the “absence” time has not continued for 30 minutes, the process returns to step S22 to detect the human density in the control target area.

  On the other hand, if it is determined that the “absence” time continues for 30 minutes, the indoor air conditioner 22 is stopped (S25). Then, it is determined whether 30 minutes have elapsed since the indoor air conditioner 22 was stopped (S26). As a result, if 30 minutes have not passed, the stop state of the indoor air conditioner 22 is maintained, and if 30 minutes have passed, the process returns to step S22 to detect the human density in the control target area.

  If it is determined in step S23 that the human density output from the controller 10 is “present”, the set temperature of the indoor air conditioner 22 is set to 26 degrees (S27). Subsequently, it is determined whether or not the state where the human density output from the controller 10 is “present” continues for 30 minutes (S28).

  Here, when it is determined that the time when the human density output from the controller 10 is “present” has not continued for 30 minutes and the human density has become “absent” before 30 minutes have passed, Air conditioning control according to human density is performed. For this reason, it returns to step S22 and the human density in a control object area is detected. On the other hand, when it is determined that the time when the human density output from the controller 10 is “present” continues for 30 minutes, the operation is performed with the set temperature raised to 27 ° C. (S29).

  Then, after raising the set temperature to 27 ° C., it is determined whether or not the time when the human density output from the controller 10 is “present” continues for 30 minutes (S30). Here, when it is determined that the time when the human density output from the controller 10 is “present” has not continued for 30 minutes, air conditioning control is newly performed according to the human density. For this reason, it returns to step S22 and the human density in a control object area is detected. On the other hand, when it is determined that the time when the human density output from the controller 10 is “present” continues for 30 minutes, the set temperature is raised to 28 ° C. and the operation is performed (S31).

  Then, it is determined whether or not the time when the human density output from the controller 10 is “present” continues for 30 minutes (S32). As a result, when it is determined that the time when the output human density is “present” continues for 30 minutes, the process returns to step S32 and the air conditioning of the indoor air conditioner 22 is performed with the set temperature maintained at 28 ° C. Take control. If it is determined that the time when the human density output from the controller 10 is “present” has not continued for 30 minutes, the process returns to step S22 in order to newly perform air conditioning control according to the human density, Detects human density in the controlled area.

  In this way, in the control for setting the temperature stage according to the occupancy duration, as shown in FIG. 8, the control for adjusting the set temperature of the indoor air conditioner 22 is performed according to the time that the person stays. For example, as shown in FIG. 9A, the indoor air conditioner 22 is stopped when no person is present.

  From here, it is assumed that the person H has changed to a staying state as shown in FIG. At this time, the person who started the stay is immediately after moving from a different place and is often heated. For this reason, immediately after the person H starts to stay, the set temperature in the indoor air conditioner 22 is set to a lower 26 ° C. For this reason, the heat generated by the person H who has started staying can be quickly stored, and a comfortable state can be obtained.

  In addition, when a certain amount of time has elapsed since the start of the stay, the person's fever gradually subsides and the person's body becomes accustomed to the room temperature. For this reason, in the control according to the occupancy duration, as shown in FIG. 8, when the occupancy duration has passed 30 minutes, the indoor air conditioner 22 is operated as shown in FIG. 9C. Slightly weaken and set the set temperature to 27 ° C, increased by 1 ° C. Then, when another 30 minutes have passed, the set temperature is further raised by 1 ° C., and as shown in FIG. 9D, the operation of the indoor air conditioner 22 is further weakened, and the set temperature is raised by 1 ° C. to 28 ° C. Set.

  When a person stays in the room, even if the set temperature in the room is gradually increased as the occupancy duration increases, it is possible to prevent a feeling of strangeness from being given to the person in the room. For this reason, when a person's occupancy duration exceeds a predetermined threshold, which is 30 minutes in the above example, by relaxing the air conditioning condition of the air conditioner, normally the person who is staying does not recognize The air conditioning conditions of the air conditioner can be relaxed. Therefore, energy saving can be achieved without impairing indoor comfort.

  Furthermore, a plurality of predetermined threshold values are set. In the above example, 30 minutes are set as the first threshold value, and 60 minutes are added as 30 minutes as the second threshold value. The air conditioning condition of the air conditioner is eased every time it exceeds. For this reason, further energy saving can be achieved without impairing indoor comfort.

  Here, in the above control, the occupancy duration until the set temperature is raised is set to 30 minutes, but the occupancy duration at this time may be a time other than 30 minutes, and should be set appropriately. Can do. Further, the unit for increasing the set temperature is not limited to 1 ° C., but may be less than 1 ° C., for example, 0.5 ° C., or may be a temperature exceeding 1 ° C., for example, 2 ° C.

  On the other hand, in addition to the control according to the occupancy time, it is possible to adjust the set temperature according to the human density in the specific area in the room. Hereinafter, the control in this case will be described. FIG. 10 is a flowchart showing a processing procedure of air conditioning control in consideration of the human density in the occupancy duration.

  As shown in FIG. 10, in the air conditioning control in consideration of the human density, when the air conditioning control is started (S41), the human density is detected by the controller 10 (S42), similarly to the control according to the occupancy duration shown in FIG. Subsequently, it is determined whether the human density output from the controller 10 in the air conditioning control device 20 is “absent”, “present / confused”, or “present / congested” (S43).

  As a result, when it is determined that the density is “absent”, it is determined whether or not the “absent” time continues for 30 minutes (S44), and the “absent” time continues for 30 minutes. If it is determined that it is not, the process returns to step S42 to detect the human density in the control target area. If it is determined that the “absence” time continues for 30 minutes, the indoor air conditioner 22 is stopped (S45). Then, it is determined whether 30 minutes have passed since the indoor air conditioner 22 was stopped (S46). If 30 minutes have not passed, the stopped state of the indoor air conditioner 22 is maintained, and 30 minutes have passed. If so, the process returns to step S42 to detect the human density in the control target area.

  If it is determined in step S43 that the human density output from the controller 10 is “present / unexploited”, it is determined whether the previous state is “absent” (S47). As a result, if it is determined that the previous state is “absent”, it is considered that a person has moved from another place into the room, so the set temperature of the indoor air conditioner 22 is set to 26 ° C. (S48). On the other hand, if it is determined that it is not “absent”, the state is maintained (S49).

  Thereafter, it is determined whether or not the state where the human density output from the controller 10 is “present / unexploited” continues for 30 minutes (S50). As a result, when it is determined that the human density is not “existing / disengaged” for 30 minutes and it is determined that it is not “existing / disengaged” before 30 minutes elapses, the process returns to step S42 and control is performed. Detects human density in the target area. On the other hand, when it is determined that the time when the human density is “present / unexploited” continues for 30 minutes, the set temperature is increased to 28 ° C. (S51).

  Thereafter, it is determined whether or not the state where the human density is “existing / disengaged” continues (S52). As a result, when it is determined that the state where the human density is “present / unexploited” continues, the process returns to step S51 and the operation of the indoor air conditioner 22 is continued as it is. On the other hand, when it is determined that the state where the human density is “existence / non-existence” does not continue and is no longer “existence / exception”, the process returns to step S42 to detect the human density in the control target area.

  On the other hand, if it is determined in step S43 that the human density output from the controller 10 is “present / crowded”, it is considered that the amount of heat generated by the crowded person is large. The temperature is set to 26 ° C. (S53). Subsequently, it is determined whether or not the state where the human density output from the controller 10 is “present / crowded” continues for 30 minutes (S54).

  As a result, if it is determined that the state where the human density is “present / crowded” has not been continued for 30 minutes and is no longer “present / crowded” before 30 minutes have passed, the process returns to step S42 and control is performed. Detects human density in the target area. On the other hand, when it is determined that the time when the human density is “present / crowded” continues for 30 minutes, the set temperature is raised to 27 ° C. and the operation is performed (S55).

  Further, after raising the set temperature to 27 ° C., it is determined whether or not the time when the human density output from the controller 10 is “present / congested” continues for 30 minutes (S56). If it is determined that the time when the human density output from the controller 10 is “congested / congested” does not continue for 30 minutes, the process returns to step S42 to detect the human density in the control target area.

  On the other hand, when it is determined that the time when the human density output from the controller 10 is “present / congested” continues for 30 minutes, the set temperature is raised to 28 ° C. and the operation is performed (S57). Then, it is determined whether or not the time when the human density output from the controller 10 is “present / congested” has continued (S58). As a result, when it is determined that the time when the output human density is “present / congested” continues, the air conditioning control of the indoor air conditioner 22 is performed while maintaining the set temperature at 28 ° C. as it is. In addition, when it is determined that the time when the human density output from the controller 10 is “present / congested” has not continued, the process returns to step S42 in order to newly perform air conditioning control according to the human density, Detects human density in the controlled area.

  As described above, in the control in consideration of the human density, the set temperature can be adjusted more finely in the case where the human density is “present / crowded” than in the case where the human density is “present / confused”. In this case, when the human density is “existence / non-exposure”, as shown in FIG. 11, the set temperature is increased by 2 ° C. to 28 ° C. when the occupancy duration has passed 30 minutes. . On the other hand, when the human density is “present / congested”, it is difficult to detect individual movements although movement of a plurality of persons is assumed. Therefore, the temperature shift is moderated and the set temperature is increased by 1 ° C. when the occupancy duration has passed 30 minutes. In this way, when the density of people is “existing / congested”, the temperature shift is accelerated, and when it is “congested / congested”, the temperature shift is moderated so that driving with consideration for comfort can be performed. It can be carried out.

[Weighting control]
Next, the weighting control according to the area characteristics in the room will be described. In the human detection sensors 11 to 14, a plurality of minimum detection areas are detected by one sensor, and in this embodiment, four minimum detection areas are detected. An address is assigned to each minimum detection area. Further, the controller 10 stores associations between the human detection sensors 11 to 14 and the minimum detection area where the human detection sensors 11 to 14 detect the stay state. For this reason, the controller 10 acquires the address of the minimum detection area according to the person detection sensors 11-14 which transmitted the stay state. For example, the control target areas E1 to E4 shown in FIG. 3 are controlled as shown in FIG. Here, the indoor air conditioner 22A corresponding to “air conditioner 1” mainly performs air conditioning on the first control target area E1.

  Similarly, the indoor air conditioner 22B corresponding to “air conditioner 2” mainly performs air conditioning on the second control target area E2, and the indoor air conditioner 22C corresponding to “air conditioner 3” is set in the third control target area E3. Air conditioning is mainly performed. Furthermore, the indoor air conditioner 23A corresponding to the “air conditioner 4” mainly performs air conditioning on the fourth control target area E4.

  Here, each minimum detection area is weighted according to the characteristics of the minimum detection area. Specifically, the minimum detection areas “001” to “012”, “019” to “020”, and “023” to “032” are weighted to perform normal control, and “017”, “ The minimum detection areas of “018”, “021”, and “022” are weighted to perform control by changing the control content. As the change of the control content, here, the weighting is larger than usual. Further, the minimum detection areas “013” to “016” are weighted so as not to perform air conditioning control.

  Such weighting can be determined in advance according to the attribute of the minimum detection area such as the indoor environment. For example, as shown in FIG. 13, an example will be described in which the office room RA is divided into minimum detection areas of 6 rows × 16 columns. The office RA has a minimum detection area in the 1st row to the 1st column, the 7th to 16th column, the 2nd row, the 15th to 16th column, and the 3rd row, the 15th to 16th column. It is a space where people such as a space do not stay for a long time, and is a non-detection area R1 in which the human density is not detected.

  The minimum detection area in the first row, the fourth to sixth columns, and the sixth row, the 13th to the 16th columns, is a space where people such as conference rooms often perform intensive thinking, and the weighted area is doubled. R2. Furthermore, the 4th row, the 16th column, the 5th row, the 13th to the 14th column, the 16th column, the 6th row, the 1st to the 3rd column, the 7th column, the 9th column, and the 13th column have no seats for seating people. Is a lightly weighted area R3 in which the ratio of congestion is low and the weighting is halved. The other minimum detection area is a normal weighting area R4 that is a normal weighting.

  In this way, by weighting air conditioning according to the attributes of the minimum detection area, air conditioning is clearly given priority in areas where people are likely to stay different from other areas and spaces for concentrated thinking. Air conditioning can be performed according to the characteristics of the area, such as the desired area. In addition, by assigning addresses to the divided spaces and performing control for each minimum detection area, for example, control according to the preference of people who use the minimum detection area with respect to the heat and cold can be performed. Such weighting can be appropriately corrected by an external input means (not shown).

[Task / Ambient air conditioning]
Moreover, in the indoor air conditioner which concerns on this invention, control using task ambient air conditioning can also be performed. For example, as shown in FIG. 14, task indoor air conditioners 31 to 33 that are task air conditioners can be provided as the room air conditioner, and ambient indoor air conditioner 40 that is an ambient air conditioner can be provided. The task indoor air conditioners 31 to 33 perform air conditioning in a narrow area in the room. In addition, the ambient indoor air conditioner 40 includes a plurality of air outlets 41 and a pipe 42 that supplies conditioned air to these air outlets 41 to perform air conditioning of the entire room.

  When performing task / ambient air conditioning, the task room air conditioners 31 to 33 perform control in accordance with, for example, the blow chart shown in FIG. Here, when there is even one person in the office room, the ambient room air conditioner 40 can be turned on, and when there is no person in the office room, the ambient room air conditioner 40 can be turned off.

  As the human detection means for determining whether or not there is a person in the office room, a human density detection system can be used, or other human detection means provided separately in the office room or the like can be used. As the other person detection means here, the first person entering the room can turn on / off the switch, or a human sensor can be used.

  Further, as shown in FIG. 14, it is assumed that desks D1 to D3 exist below the task indoor air conditioners 31 to 33, respectively. At this time, if there is no person around the first desk D1, the first task room air conditioner 31 disposed above the first desk D1 is turned off. When a large number of people are gathered around the second desk D2, the second task indoor air conditioner 32 disposed above the second desk D2 is turned on, and the set temperature is set to a low initial value. Cooling operation set at 26 ° C is performed. Further, when one person is sitting around the third desk D3, the third task indoor air conditioner 33 arranged above the third desk D3 is turned ON, and the set temperature is set to the initial value + 2 ° C. Cooling operation set to 28 degreeC or ventilation operation is performed.

  In this way, by performing task / ambient air conditioning, air conditioning that is based on a relaxed room temperature setting compared to normal air conditioning conditions, and by performing the task air conditioning system that performs the overall control described above, energy saving operation is achieved. It can be carried out. Moreover, even if the temperature setting of the ambient air conditioning is relaxed, the comfort feeling is maintained by the task air conditioning. Therefore, even when an area with a low personnel density is switched to the air blowing operation, the energy saving operation can be performed while maintaining the comfort due to the feeling of airflow.

[Outdoor air conditioner evaporation temperature setting control]
Moreover, in the indoor air conditioner which concerns on this invention, control of the outdoor air conditioners 21A and 21B can also be performed. As control of outdoor air-conditioning equipment 21A and 21B here, control which changes the evaporation temperature setting of outdoor air-conditioning equipment 21A and 21B is possible. Hereinafter, an example of the control will be described. FIG. 15 is a flowchart showing a control procedure for adjusting the evaporation temperature setting of the outdoor air conditioner.

  As shown in FIG. 15, in the control for adjusting the evaporation temperature setting of the outdoor air conditioner, first, when the air conditioning control is started (S61), the controller 10 detects the human density (S62), and then the air conditioning control device. 20, it is determined whether the human density output from the controller 10 is “absent”, “present / unexploited”, or “present / congested” (S 63).

  As a result, when it is determined that the human density is “absent”, the process returns to step S62 without adjusting the evaporation temperature setting, and the human density in the control target area is detected. On the other hand, when it is determined that the human density is “existing / distant”, the evaporating temperature setting in the outdoor air conditioners 21A and 21B is set to “high” (S64). Then, the process returns to step S62, and the human density in the control target area is detected.

  Further, when it is determined in step S63 that the human density is “present / crowded”, it is determined whether or not the state where the human density is “present / crowded” continues for 30 minutes (S65). Here, when it is determined that the state where the human density is “present / congested” has not continued for 30 minutes, the process returns to step S62 to detect the human density in the control target area. On the other hand, when it is determined that the state where the human density is “present / crowded” continues for 30 minutes, the evaporation temperature setting is set to “low” (S 66).

  Then, it is determined whether or not the congestion state continues (S67). As a result, when it is determined that the congestion state continues, the process returns to step S66, and the operation is continued with the evaporation temperature setting kept at “low”. On the other hand, if it is determined that the congestion state is not continuing, the process returns to step S62, and the human density in the control target area is detected. Thereafter, the same control is repeated.

  The higher the evaporating temperature setting of the refrigerant, the higher the operating efficiency of the outdoor air conditioners 21A and 21B. On the other hand, when the indoor density is high, if the evaporating temperature setting is low, a sufficient cooling effect, particularly a dehumidifying effect may not be obtained. For this reason, here, when the human density is “present / low”, the evaporating temperature setting is set high with priority given to the operation efficiency of the outdoor air conditioners 21A and 21B. In the case of “congestion”, the evaporating temperature setting is set low, giving priority to the cooling effect. For this reason, the outdoor air conditioners 21A and 21B can be operated according to the indoor density of the room. Therefore, it is possible to perform appropriate air conditioning control according to the staying state of the person in the room, and to further achieve both the maintenance of the indoor comfort and the energy saving.

[Outdoor unit demand control]
Moreover, as control of outdoor air conditioner 21A, 21B, when starting an indoor air conditioner, the demand control of outdoor air conditioner 21A, 21B can also be performed. Hereinafter, the procedure will be described. FIG. 16 is a flowchart showing a procedure for demand control of the outdoor air conditioner. The flowchart here is control performed when starting the indoor air conditioner. After this procedure is completed, the process proceeds to, for example, step S3 of the flowchart shown in FIG.

  As shown in FIG. 16, when performing the demand control of the outdoor air conditioning equipment, first, when the air conditioning control is started (S71), the controller 10 detects the human density (S72), and then, in the air conditioning control device 20 It is determined whether the human density output from the controller 10 is “absent”, “present / confused” or “present / congested” (S73).

  As a result, when it is determined that the human density is “absent” or “absent / unexploited”, the maximum capacity of the outdoor air conditioners 21A and 21B is set to 50% (S74). Next, it is determined whether the human density is “present / crowded” (S75). Here, when it is determined that the human density is not “present / congested”, it is determined whether or not a predetermined set time, for example, one hour has elapsed since the operation of the indoor air conditioner was started ( S76).

  Here, when it is determined that one hour has not elapsed, the indoor air conditioner is being started up. At this time, the process returns to step S75 and the same processing is repeated. If it is determined in step S73 that the human density is “resident / crowded”, if it is determined in step S75 that the human density is “resident / crowded”, and a certain time has elapsed in step S76. If it is determined that the air conditioning has been done, the demand for air conditioning in the office is increasing. In this case, the maximum capacity of the outdoor air conditioners 21A and 21B is set to 100% (S77). And it transfers to step S3 shown in FIG.

  For example, when the office room R is air-conditioned, even if the start time of the office room R is determined, for example, the start time of a company that uses the office room R is determined, the office hours vary among individuals. Here, usually, at the time of start-up, the outdoor air conditioners 21A and 21B often operate at the maximum capacity. Therefore, in this case, the outdoor air conditioners 21A and 21B are operated at the maximum capacity of 100% in spite of the low human density, and the indoor air conditioner is operated with low equipment efficiency. It will be.

  Therefore, in the flow shown in FIG. 16, when the indoor air conditioner is started up, the human density of the entire area to be controlled by the outdoor air conditioners 21A and 21B is detected. When the human density is low, the outdoor air conditioners 21A and 21B Demand control. Specifically, when the human density is “absent” or “absent / unexploited”, the maximum capacity of the outdoor air conditioners 21A and 21B is forcibly reduced to about 50%, and the capacity of about 50% with good operating efficiency. Start up slowly with.

  Then, after a certain period of time during which the start-up operation is performed, for example, 1 hour, the upper limit setting of the capacity of the outdoor air conditioners 21A and 21B is changed to 100%, and normal control is started. Also, even before a certain period of time for start-up operation has elapsed, if the human density becomes “present / crowded”, the upper limit setting of the capacity of the outdoor air conditioners 21A and 21B is changed to 100%. To start normal control. By performing such control, it is possible to perform operation in consideration of the operation efficiency in the outdoor air conditioners 21A and 21B.

  The demand control is performed for each of the outdoor air conditioners 21A and 21B. For this reason, depending on the density of people in the office room R, the maximum capacity of the left outdoor air conditioner 21A for supplying refrigerant to the indoor air conditioner 22 shown in FIG. 17 is set to an efficient place of about 50%. The right outdoor air conditioner 21B that supplies the refrigerant to the indoor air conditioner 23 can be operated with the maximum capacity.

  In performing demand control, not only the maximum capacity is controlled, but also power consumption can be controlled. In this case, control is performed so that the upper limit of the operating power amount becomes a predetermined ratio of the rated power consumption.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment. For example, in the above embodiment, the object to be air-conditioned is a office room in an office building, but may be other rooms. Other examples of objects to be air-conditioned include a conference room, a hall, and a server room.

  Moreover, in the said embodiment, although the control which assign | provided the address to the minimum detection area is performed in a human detection system, an address can also be provided to the detection area itself, and control is performed without providing an address. You can also. Furthermore, in the above-described embodiment, two detection areas are set in the control target area. However, two or more detection areas can be set in the control target area. The same area can also be used. Also, two or more control target areas can be set in one detection area. Furthermore, it is possible to set so that one detection area is included in a plurality of control target areas. In the above embodiment, the predetermined area matches the control target area, but the predetermined area may be different from the control target area. In this case, for example, the human density in the predetermined area can be calculated, and the air conditioner in the control target area can be controlled based on the result of performing arithmetic processing on the calculated human density. On the other hand, in the above embodiment, control is performed in consideration of the influence of solar radiation in the overall control, but the control can also be performed without considering the influence of solar radiation. In the above embodiment, a plurality of minimum detection areas are detected by a single human detection sensor, but only a single minimum detection area may be detected.

  Moreover, in the said embodiment, although the multi air cooling package system for buildings is employ | adopted, another system may be sufficient. For example, a system using a fan coil unit or an air conditioner may be used. Further, a package system other than the building multi may be used. Furthermore, in the said embodiment, although the controller 10 and the air-conditioning control apparatus 20 are provided as another apparatus, the controller 10 and the air-conditioning control apparatus 20 are integrated, and control in the controller 10 and the air-conditioning control apparatus 20 is put together. You can also do it.

DESCRIPTION OF SYMBOLS 1 ... Human density detection system 2 ... Air-conditioning system 3A-3F, 4A-4F ... Indoor temperature measurement apparatus 10 ... Controller 11A-11F, 12A-12F, 13A-13F, 14A-14F ... Human detection sensor 20 ... Air-conditioning control apparatus 21A , 21B ... Outdoor air conditioners 22A-22F ... Left indoor air conditioners 23A-23F ... Right indoor air conditioners 31-33 ... Task indoor air conditioners 31 ... First task indoor air conditioners 32 ... Second task indoor air conditioners 33 ... Third Task indoor air conditioner 40 ... Ambient indoor air conditioner 41 ... Air outlet 42 ... Piping D1-D3 ... Desk E1-E4 ... Control target area H ... Person R, RA ... Office R1 ... Non-detection area R2 ... Multiple area R3 ... Light weight area R4 ... Normal heavy area

Claims (12)

An air conditioner for indoor air conditioning;
A human detection sensor for detecting the staying state of the person in the room;
Based on the detection result of the human detection sensor, human density acquisition means for acquiring human density in the room,
An air conditioning control device that controls the operation of the air conditioner based on the human density in the room acquired by the human density acquisition means,
The air conditioning control device performs air conditioning control in which the air conditioning condition in the air conditioner is relaxed for an area where the human density in the room is low than in an area where the human density is high in the room. While setting a minimum detection area that divides the room into a plurality of areas,
Set a detection area with a predetermined number of the minimum detection areas,
The human detection sensor detects a staying state of a person in the minimum detection area included in the detection area,
The indoor air conditioner according to claim 1, wherein the human density acquisition unit acquires the human density of a predetermined area in the room based on a staying state of the person in the minimum detection area detected by the human detection sensor.   The human density acquisition means determines that the human density of the predetermined area is high when the number of the minimum detection areas in which the stay state is present among the minimum detection areas in the predetermined area exceeds a predetermined value. And the indoor air conditioner of Claim 2 which determines with the human density of the said predetermined area being low when the number of the minimum detection areas whose stay state is an existing state is below a predetermined value. The human density acquisition means includes a recording device that records a temporal change in the staying state of the person,
The indoor air conditioner of Claim 2 or Claim 3 which acquires the human density of the said predetermined area based on the time-dependent change of the said person's stay state. An address is assigned to each of the plurality of minimum detection areas,
A plurality of the air conditioners are arranged corresponding to a plurality of the minimum detection areas,
5. The air conditioning control apparatus according to claim 2, wherein the air conditioning control is performed on the plurality of air conditioners by associating the address given to the minimum detection area with each of the plurality of air conditioners. The indoor air conditioner of Claim 1.   The indoor air conditioner according to claim 5, wherein weighting is performed on the control content of the air conditioner associated with the address based on an attribute of the minimum detection area. Further comprising human detection means for detecting the presence of a person in the room,
The air conditioner further includes a plurality of task air conditioners that air-condition the indoor narrow area, and an ambient air conditioner that air-conditions the indoor wide area,
The air conditioning control device performs air conditioning control of the plurality of task air conditioners based on the indoor density of the room acquired by the density density acquisition unit,
The room air conditioner according to any one of claims 2 to 6, wherein air conditioning control of the ambient air conditioner is performed based on a detection result of the human detection means. It is provided with occupancy duration acquisition means for acquiring the occupancy duration of a person in the room,
The indoor air conditioner according to any one of claims 2 to 7, wherein the air condition of the air conditioner is relaxed when the occupancy time of the person exceeds a predetermined threshold value. A plurality of the predetermined threshold values are set,
The indoor air conditioner according to claim 8, wherein the air conditioner of the air conditioner is relaxed every time the plurality of threshold values are exceeded. The air conditioner includes an indoor unit and an outdoor unit, and is an air conditioner that circulates and supplies a refrigerant between the indoor unit and the outdoor unit,
The indoor air conditioner according to any one of claims 1 to 9, wherein control by the air conditioner control device is started when the air conditioner is started up. The air conditioner includes an indoor unit and an outdoor unit, and is an air conditioner that circulates and supplies a refrigerant between the indoor unit and the outdoor unit,
The said air-conditioning control apparatus sets the evaporation temperature of the refrigerant | coolant in the said outdoor unit based on the human density in the said room acquired with the human density acquisition means. Indoor air conditioner. Based on the detection result of the human detection sensor that detects the staying state of the person in the room, obtain the human density in the room,
In performing air conditioning control of an air conditioner that performs indoor air conditioning based on the acquired human density in the room,
An indoor air-conditioning method that performs air-conditioning control in which the air-conditioning conditions in the air conditioner are relaxed with respect to an area where the human density in the room is low compared to an area where the human density in the room is high.

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