JP4125351B1 - Air conditioner - Google Patents

Abstract

An object of the present invention is to achieve optimal air conditioning control by detecting the position and activity amount of a person in a room and appropriately correcting a target set temperature according to the detected position and activity amount of the person.
A plurality of human body detection sensors are provided in an indoor unit, and a region to be air-conditioned is divided into a plurality of regions by a plurality of human body detection sensors. In addition, an activity amount detecting means for detecting the amount of activity of each person in a plurality of areas is further provided, and air conditioning control is performed according to the activity amount of the person detected by the activity amount detecting means.
[Selection] Figure 32

Description

  The present invention relates to an air conditioner provided with a human body detection sensor for detecting the presence or absence of a person in an indoor unit, and in particular, detects the position of a person in a room and corrects the set temperature in the room according to the detected position of the person. Related to technology.

  The conventional air conditioner controls the wind direction or the air volume according to the position of the human body or the remote control detected by the human body detection sensor, and also determines the wind direction and the air volume based on the rate of change of the temperature detected by the temperature detection means provided in the remote control. Is further adjusted to achieve comfortable air conditioning (see, for example, Patent Document 1).

  In addition, the human body detection sensor detects the distance from the indoor unit to the person and the left and right direction, controls the plurality of left and right balloon deflection units according to the detected plurality of left and right positions, and from among the detected plurality of distances In some cases, the shortest distance is selected and the upper and lower blowing directions are controlled with respect to the shortest distance (see, for example, Patent Document 2).

  Furthermore, an activity amount detection device that detects the activity amount of a person in the area to be air-conditioned is provided. When the activity amount detected by the activity amount detection device is large, the set temperature is lowered, and an appropriate cooling is performed at the time of cooling. In addition to providing an air-conditioning state that can give a sense of comfort, it has also been proposed to improve comfort by providing an air-conditioning state that suppresses excessive warmth during heating (see, for example, Patent Document 3).

JP-A-6-347080 Japanese Patent Laid-Open No. 7-103551 Japanese Patent Laid-Open No. 2-68438

  However, in the air conditioner described in Patent Document 1, an optimal place is not set as a target place for the left and right wind direction control during heating or cooling, and it cannot be said that the air conditioning efficiency is sufficient. It was.

  Further, as in the air conditioner described in Patent Document 2, it is not sufficient to simply control the plurality of left and right blowing deflection units according to the detected plurality of left and right positions, and the air conditioning efficiency is still improved. There was room for.

  Furthermore, in the air conditioner described in Patent Document 3, the target set temperature is corrected based on the reaction frequency of the activity amount detection device for the entire room, and the activity amount for each limited region is determined. Can not. Therefore, if a person with a large amount of activity and a person with a small amount of activity coexist in the same room, it will be determined that the amount of activity is large and the set temperature will be corrected to a lower value. Feels cold and uncomfortable. In addition, when there are many people in the room, the reaction frequency of the entire room increases, so there is a problem that even if the amount of activity is small as a whole, it is erroneously determined that the amount of activity is large and an uncomfortable air-conditioned space is provided.

  The present invention has been made in view of such problems of the prior art, and detects the position and activity amount of a person in a room, and sets a target set temperature according to the detected position and activity amount of the person. An object of the present invention is to provide an air conditioner that achieves optimal air-conditioning control by correcting it appropriately.

In order to achieve the above object, the invention according to claim 1 of the present invention detects a human presence / absence by a human body detection sensor provided in an indoor unit and sets a control target set at a desired set temperature. An air conditioner that performs air conditioning control based on a value, and divides the area to be air-conditioned into a plurality of areas by a plurality of human body detection sensors according to a position of a person in the area to be air-conditioned, and each of the plurality of areas Region characteristics are set according to the reaction results of the plurality of human body detection sensors for a first predetermined time, and the plurality of areas have at least a region characteristic having a long time during which the person is present. The first region is classified into a second region having a region characteristic in which the time in which a person is present is shorter than the first region, and the first region is determined according to a reaction result of the plurality of human body detection sensors for a second predetermined time. Detect human presence in the area When the presence of a person is detected in the first area, the presence of a person is estimated in a longer time interval than in the second area. By estimating the absence, the first area is set to be shorter than the second area, and the time required for the absence estimation is set longer, and the first area is in the plurality of areas. An activity amount detecting means for detecting the amount of activity of each person is further provided, a temperature correction value is calculated according to the activity amount of the person detected by the activity amount detecting means, and the temperature correction value is added to a desired set temperature. Thus, the air conditioning control is performed as the control target value .

  In the invention according to claim 2, the activity amount is classified into a plurality of activity amount levels based on a reaction frequency of the activity amount detection means within a first predetermined time for each of the plurality of regions. It is characterized by.

  Furthermore, the invention according to claim 3 is that the plurality of activity level levels are the response frequencies of the activity amount detecting means within a second predetermined time longer than the first predetermined time in all the regions. Further classification is based on the sum.

  According to a fourth aspect of the present invention, the plurality of areas are divided into a plurality of blocks based on positions in the left-right direction from the indoor unit, and any of the plurality of activity level levels is assigned to each of the plurality of blocks. It is characterized in that it is set.

The invention according to claim 5 sets a temperature correction value for each of the plurality of regions, calculates the temperature correction value according to the activity amount of the person detected by the activity amount detection means , This temperature correction value is added to a desired set temperature, and air conditioning control is performed as a control target value .

The invention according to claim 6 is characterized in that the temperature correction value differs according to the outside air temperature.

According to a seventh aspect of the present invention, when the human body detection sensor detects that there are people in at least two of the plurality of regions, the temperature correction value is calculated between the two regions and the indoor unit. Further correction is performed based on the relative positional relationship.

The invention according to claim 8 is characterized in that the activity amount detection means is the plurality of human body detection sensors.

  According to the present invention, a region to be air-conditioned is divided into a plurality of regions by a plurality of human body detection sensors, and the presence or absence of a person in each of the divided regions is detected by a human body detection sensor, and the amount of human activity in each region Is detected by the activity amount detecting means, and the air conditioning control is performed according to the detected activity amount of the person, so that the optimum air conditioning control can be achieved regardless of the position of the person or the number of people.

  In addition, since a plurality of human body detection sensors are used as activity amount detection means, the configuration is simple and inexpensive.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
An air conditioner used in a general household is composed of an outdoor unit and an indoor unit that are usually connected to each other by refrigerant piping, and FIGS. 1 and 2 show the indoor unit of the air conditioner according to the present invention. ing.

  The indoor unit has a main body 2 and a movable front panel (hereinafter simply referred to as a front panel) 4 that can freely open and close the front opening 2a of the main body 2, and the front panel 4 is the main body 2 when the air conditioner is stopped. While the front opening 2a is closed in close contact with the front, the front panel 4 moves in a direction away from the main body 2 to open the front opening 2a during operation of the air conditioner. 1 shows a state in which the front panel 4 closes the front opening 2a, and FIG. 2 shows a state in which the front panel 4 opens the front opening 2a.

  As shown in FIG. 3, the heat exchanger 6 and the indoor air taken in from the front opening 2a and the upper surface opening 2b are exchanged in the heat exchanger 6 and blown out into the room. The fan 8, the upper and lower blades 12 that open and close the air outlet 10 that blows the heat-exchanged air into the room and change the air blowing direction up and down, and the left and right blades that change the air blowing direction left and right (not shown) The middle blade 14 that opens and closes on the air outlet 10 side of the front opening 2a is swingably attached to the main body 2 below the front opening 2a via the middle blade drive mechanism 16. . Further, the upper part of the front panel 4 is connected to the upper part of the main body 2 through two arms 18 and 20 provided at both ends thereof, and drive control of a drive motor (not shown) connected to the arm 18 is performed. Thus, during operation of the air conditioner, the front panel 4 moves forward and obliquely upward from the position when the air conditioner is stopped (closed position of the front opening 2a). The upper and lower blades 12 are connected to the lower part of the main body 2 via two arms 22 and 24 provided at both ends thereof, and a driving method thereof will be described later.

  As shown in FIGS. 1B and 1C, a plurality of (for example, five) sensor units 26, 28, 30, 32, and 34 are provided on the upper portion of the front panel 4 from the main plane of the front panel 4. The sensor unit 26, 28, 30, 32, 34 is held by a sensor holder 36 as shown in FIG. 4. The human body detection device is covered with a cover 5 as shown in FIG. 1A, and FIG. 1B shows a state where the cover 5 is removed.

  Each sensor unit 26, 28, 30, 32, 34 is provided in the upper part of the front panel 4, as shown in FIG. This is for enlarging (a human body position discriminating region described later) and securing a far field of view to the maximum extent. Further, as shown in FIG. 5 (b), the visual field range can be secured farther by moving the front panel 4 forward from the stop position at the start of operation, and also shown in FIG. 5 (c). Thus, the visual field range can be further expanded by moving the front panel 4 obliquely upward from the stop position. The positions of the sensor units 26, 28, 30, 32, and 34 are not limited to the upper part of the front panel 4, and even when the front panel is not movable, the human body detection device is placed on the upper part of the front panel or the main body. By attaching to the upper part, the visual field range can be expanded compared to the case of attaching to the lower part.

  Further, as shown in FIG. 5D, the sensor units 26, 28, 30, 32, 34 are provided so as to protrude from the main plane of the front panel 4. , 34 can be arranged further forward, and as shown in FIGS. 5B to 5D, the components of the indoor unit (for example, the upper and lower blades 12 and the front panel 2a with the front opening 2a opened) 4) and the like can be prevented, and the visual field range can be expanded.

  In the present embodiment, each sensor unit 26, 28, 30, 32, 34 is provided on the front panel 4, so that when the front panel 4 opens the front opening 2a, it is attached to the front panel 4. It will move and will protrude further forward.

  The sensor unit 26 includes a circuit board 26a, a lens 26b attached to the circuit board 26a, and a human body detection sensor (not shown) mounted inside the lens 26b. The same applies to the other sensor units 28, 30, 32, and 34. Furthermore, the human body detection sensor is configured by, for example, an infrared sensor that detects the presence or absence of a person by detecting infrared radiation emitted from the human body, and a pulse that is output in response to a change in the amount of infrared detected by the infrared sensor. The presence or absence of a person is determined by the circuit board 26a based on the signal. That is, the circuit board 26a functions as presence / absence determination means for determining the presence / absence of a person. Hereinafter, a sensor and a lens paired with each other are referred to as a sensor / lens pair.

  Here, in order to obtain the detection areas in the front and rear, right and left directions, it is conceivable to arrange the sensor units 26, 28, 30, 32 and 34 on the surface of an arbitrary sphere Z as shown in the side view of FIG. . In this case, the optical axes of the sensor / lens pairs of the sensor units 26, 28, 30, 32, and 34 intersect at the center P of the sphere Z and are not in a twisted position. When viewed from the indoor unit, the sensor units 26, 28, 30, 32, and 34 are projected on the surface of the sphere Z in the front-rear direction, so it is difficult to reduce the size of the human body detection device.

  Further, in order to suppress the above-described jumping out of the sensor unit, an arbitrary sphere Z is cut out at an arbitrary plane X as shown in FIG. 7, and the optical axis of the plane X and each of the sensor units 26, 28, 30, 32, and 34 is cut. It is also conceivable to arrange each sensor unit 26, 28, 30, 32, 34 at the intersection with (not the twist position). In this case, the arrangement of the sensor units 26, 28, 30, 32, and 34 is less likely to jump out in the front-rear direction as shown in the front view of FIG. The arrangement of sensor units having different distances from each other is dispersed in the vertical and horizontal directions, and there is a limit to downsizing the human body detection device.

  Therefore, in the present embodiment, the optical axes of the sensor / lens pair of the sensor units 26, 28 are on the same plane, and the optical axes of the sensor / lens pair of the sensor units 30, 32, 34 are on the same plane. However, the optical axis of the sensor / lens pair of the sensor units 26 and 28 and the optical axis of the sensor / lens pair of the sensor units 30, 32, and 34 are not on the same plane, but are twisted. Each circuit board 26a, 28a, 30a, 32a, 34a is attached to the sensor holder 36 at a predetermined angle.

  Thus, by setting the optical axis of the sensor / lens pair of the sensor unit having a different distance between the detection area and the indoor unit to the twisted position, as shown in FIGS. 1 and 2, the sensor units 26, 28, 30, 32 and 34 can be arranged substantially linearly in the lateral direction, and the human body detection device can be downsized.

  Although an example in which sensor units having different distances from the indoor unit to the detection area of the sensor unit are arranged in a substantially straight line in the lateral direction has been described, sensor units having different left and right directions are substantially straight in the height direction of the indoor unit. The same can be said for the case of the arrangement.

  As described above, according to the present embodiment, among the plurality of sensor units 26, 28, 30, 32, and 34 provided in the indoor unit, sensors having different distances between the visual field area of the sensor unit and the air conditioner Since the optical axes of the sensor / lens pair of the unit are twisted with respect to each other, the sensor units 26, 28, 30, 32, and 34 can be installed so as not to jump out of the front panel 4 of the indoor unit. The human body detection device can be downsized.

  Further, by arranging the sensor units 26, 28, 30, 32, 34 in a substantially straight line, the sensor units 26, 28, 30, 32, 34 are not dispersed in the vertical and horizontal directions, and the sensor units 26, 28, The size of 30, 32, 34 can be reduced.

  In addition, a plurality of sensor units 26, 28, 30, 32, and 34 in which the optical axes of the sensor / lens pairs are in a twisted position are provided in the human body detecting device, and the optical axes of the sensor / lens pairs are arranged in the visual field direction. Since it is arranged so as to face, it is possible to form a plurality of detection areas in the distance direction and a plurality of detection areas in the left-right direction when viewed from the human body detection device, and downsize the lens by improving the light collection efficiency Is possible.

FIG. 9 shows human body position determination areas detected by the sensor units 26, 28, 30, 32, and 34. The sensor units 26, 28, 30, 32, and 34 each have a person in the next area. Can be detected.
Sensor unit 26: area A + C + D
Sensor unit 28: Area B + E + F
Sensor unit 30: area C + G
Sensor unit 32: Area D + E + H
Sensor unit 34: area F + I

  That is, in the indoor unit of the air conditioner according to the present invention, the area that can be detected by the sensor units 26 and 28 and the area that can be detected by the sensor units 30, 32, and 34 partially overlap, and the number of areas A to I A smaller number of sensor units is used to detect the presence or absence of a person in each of the areas A to I.

  In addition, by attaching at least three human body detection sensors to the upper part of the indoor unit, the position of the human body in the room can be two-dimensionally grasped in the perspective direction and the horizontal direction with respect to the indoor unit, that is, where on the indoor floor. Can do. FIG. 10 shows an area to be detected when three human body detection sensors are provided. In the example of FIG. 10, the presence or absence of a person in the area near the indoor unit is detected by one human body detection sensor. The presence or absence of a person in an area far from the machine is detected by two human body detection sensors.

  Returning to FIG. 9, this embodiment will be further described. In the following description, the sensor units 26, 28, 30, 32, and 34 are replaced with the first sensor 26, the second sensor 28, the third sensor 30, 4 sensors 32 and a fifth sensor 34. Since the areas C, D, E, and F are detected by two sensors, the areas other than the overlapping areas (areas A, B, G, H, and I) are detected by one sensor. Therefore, it is called a normal area. The overlapping area is divided into left overlapping areas C and D and right overlapping areas E and F.

  FIG. 11 is a flowchart for setting region characteristics to be described later in each of the regions A to I using the first to fifth sensors 26, 28, 30, 32, and 34. FIG. FIG. 11 is a flowchart for determining in which of the areas A to I a person is located by using the fifth to fifth sensors 26, 28, 30, 32, and 34, and determining the position of the person with reference to these flowcharts The method will be described below.

  In step S1, the presence or absence of a person in the left overlapping region is first determined at a predetermined period T1 (for example, 5 seconds), and in step S2, a predetermined sensor output is cleared under a predetermined condition.

  Table 1 shows a method of determining the left overlapping region. When one of the three reaction results shown in Table 1 is satisfied, the outputs of the first sensor 26 and the third sensor 30 are cleared. . Here, 1 is defined as a response, 0 is defined as no response, and clear is defined as 1 → 0.

  In step S3, the presence / absence of a person in the right overlapping region is further determined in the above-described predetermined period T1, and in step S4, a predetermined sensor output is cleared under a predetermined condition.

  Table 2 shows a method for determining the right overlapping region. When one of the three reaction results shown in Table 2 is satisfied, the outputs of the second sensor 28 and the fifth sensor 34 are cleared. .

  Moreover, when it corresponds to either of the six reaction results shown in Table 1 and Table 2, the output of the 4th sensor 32 is also cleared and it transfers to step S5. In step S5, the presence / absence of a person in the normal region is determined based on Table 3 in the above-described predetermined cycle T1, and in step S6, all sensor outputs are cleared.

  Furthermore, a case where the presence / absence of a person in the areas A, B, and C is determined using only the outputs from the first to third sensors 26, 28, and 30 will be described with reference to FIG.

  As shown in FIG. 13, when all of the first to third sensors 26, 28, and 30 are OFF (no pulse) in the period T1 immediately before the time t1, the person in the regions A, B, and C at the time t1 It is determined that there is no yes (A = 0, B = 0, C = 0). Next, during the period from time t1 to time t2 after period T1, only the first sensor 26 outputs an ON signal (with a pulse), and when the second and third sensors 28, 30 are OFF, at time t2. It is determined that there is a person in the area A and there are no persons in the areas B and C (A = 1, B = 0, C = 0). Further, when the first and third sensors 26 and 30 output the ON signal from the time t2 to the time t3 after the period T1, and the second sensor 28 is OFF, a person is in the region C at the time t3. It is determined that there are no people in the areas A and B (A = 0, B = 0, C = 1). Hereinafter, the presence / absence of a person in each of the areas A, B, and C is similarly determined for each period T1.

  Actually, the first to fifth sensors 26, 28, 30, 32, and 34 are used to determine in which area of the areas A to I a person is present. Based on each of the areas A to I, a first area where the person is good (a place where the person is good), a second area where the time where the person is short is short (an area where the person simply passes, an area where the stay time is short, etc. ), And a third area (a non-living area such as a wall or a window where people hardly go) is distinguished. Hereinafter, the first region, the second region, and the third region are referred to as a life category I, a life category II, and a life category III, respectively, and the life category I, the life category II, and the life category III are respectively a region characteristic I. It can also be referred to as a region of region characteristic II, region of region characteristic II, and region of region characteristic III. In addition, the life category I (region characteristic I) and the life category II (region characteristic II) are combined into a life region (region where people live), while the life category III (region characteristic III) is changed to a non-living region ( The area of life may be broadly classified according to the frequency of the presence or absence of a person.

  This determination is performed after step S7 in the flowchart of FIG. 11, and this determination method will be described with reference to FIGS.

  FIG. 14 shows a case where the indoor unit of the air conditioner according to the present invention is installed in an LD of 1 LDK composed of one Japanese-style room, LD (living room / dining room) and kitchen, and is indicated by an ellipse in FIG. The area shows the well-placed place where the subject reported.

  As described above, the presence / absence of a person in each of the areas A to I is determined every period T1, and 1 (with a reaction) or 0 (without a reaction) is output as a reaction result (determination) in the period T1. Is repeated a plurality of times, and in step S7, it is determined whether or not the cumulative operation time of a predetermined air conditioner has elapsed. If it is determined in step S7 that the predetermined time has not elapsed, the process returns to step S1. On the other hand, if it is determined that the predetermined time has elapsed, two reaction results accumulated in the predetermined time in each region A to I are obtained. Each region A to I is determined as one of the life categories I to III by comparing with the threshold value.

  In more detail with reference to FIG. 15 showing the long-term accumulation result, the first threshold value and the second threshold value smaller than the first threshold value are set, and in step S8, the long-term accumulation result of each region A to I is set. Is determined to be greater than the first threshold, and the region determined to be greater is determined to be the life category I in step S9. If it is determined in step S8 that the long-term cumulative result of each region A to I is less than the first threshold value, whether or not the long-term cumulative result of each region A to I is greater than the second threshold value in step S10. The region determined to be large is determined to be the life category II in step S11, while the region determined to be small is determined to be the life category III in step S12.

  In the example of FIG. 15, the areas E, F, and I are determined as the life category I, the areas B and H are determined as the life category II, and the areas A, C, D, and G are determined as the life category III.

  FIG. 16 shows the case where the indoor unit of the air conditioner according to the present invention is installed in another LD of 1 LDK, and FIG. 17 discriminates each region A to I based on the long-term accumulation result in this case. Results are shown. In the example of FIG. 16, the areas C, E, and G are determined as the life category I, the areas A, B, D, and H are determined as the life category II, and the areas F and I are determined as the life category III.

  Note that the above-described determination of the region characteristics (life classification) is repeated every predetermined time, but the determination result hardly changes unless the sofa, the table, or the like arranged in the room to be determined is moved.

  Next, the final determination of the presence / absence of a person in each of the areas A to I will be described with reference to the flowchart of FIG.

  Since steps S21 to S26 are the same as steps S1 to S6 in the flowchart of FIG. 11 described above, the description thereof is omitted. In step S27, it is determined whether or not a predetermined number M (for example, 15 times) of reaction results in the period T1 has been obtained. If it is determined that the period T1 has not reached the predetermined number M, the process returns to step S21. If it is determined that the period T1 has reached the predetermined number M, in step S28, the total number of reaction results in the period T1 × M is used as the cumulative reaction period number, and the cumulative reaction period number for one time is calculated. The calculation of the cumulative reaction period is repeated a plurality of times, and it is determined in step S29 whether or not the calculation result of the cumulative reaction period is obtained for a predetermined number of times (for example, N = 4). When the determination is made, the process returns to step S21. On the other hand, when it is determined that the predetermined number of times has been reached, in step S30, the person in each of the areas A to I is determined based on the already determined area characteristics and the predetermined number of accumulated reaction periods. Presence or absence of is estimated.

  In step S31, by subtracting 1 from the calculation number (N) of the cumulative reaction period number and returning to step S21, the calculation of the cumulative reaction period number of times is repeated.

  Table 4 shows a history of reaction results for the latest one time (time T1 × M). In Table 4, for example, ΣA0 means the number of cumulative reaction periods for one time in the region A.

  Here, the cumulative reaction period number of one time immediately before ΣA0 is ΣA1, and the previous cumulative reaction period number of ΣA0 is ΣA2,..., And history of the past several times in the region (for example, ΣA3, ΣA2,. The presence / absence of a person is estimated from the four times (ΣA1 and ΣA0), the life division, and the cumulative reaction period.

  Next, after the time T1 × M from the above-described determination of the presence / absence of the person, the presence / absence of the person is similarly estimated from the past four histories, life categories, and cumulative reaction period times.

  That is, in the indoor unit of the air conditioner according to the present invention, the presence / absence of a person is estimated using a smaller number of sensors than the number of the discrimination areas A to I. Since there is a possibility that the position is incorrect, avoiding human position estimation in a single predetermined period regardless of whether it is an overlapping area, the region characteristics obtained by accumulating the region determination results for each predetermined period over a long period, and for each predetermined period The region determination results are accumulated N times, and the location of the person is estimated from the past history of the accumulated reaction period times of each region obtained, thereby obtaining the position estimation result of the person with high probability.

  Table 5 shows the time required for the presence estimation and the time required for the absence estimation when the presence / absence of the person is determined as described above and T1 = 5 seconds and M = 12 times are set.

  Thus, after the area to be air-conditioned by the indoor unit of the air conditioner according to the present invention is divided into the plurality of areas A to I by the first to fifth sensors 26, 28, 30, 32, and 34, The region characteristics (life categories I to III) of the regions A to I are determined, and the time required for the presence estimation and the time required for the absence estimation are changed according to the region characteristics of the regions A to I.

  In other words, since it takes about 1 minute for the wind to reach after changing the air conditioning setting, changing the air conditioning setting in a short time (for example, a few seconds) will not only impair comfort, but will also make people short. For such a place, it is preferable not to perform air conditioning so much from the viewpoint of energy saving. Therefore, the presence / absence of a person in each of the areas A to I is first detected, and the air conditioning setting in the area where the person is present is optimized.

  More specifically, with the time required to estimate the presence / absence of an area determined as life category II as a standard, in the area determined as life category I, there is a person at a shorter time interval than the area determined as life category II. In contrast, when there are no more people in the area, the absence of the person is estimated at a longer time interval than the area identified as Living Category II, thereby shortening the time required for the presence estimation. The time required for estimation is set to be long. On the other hand, in the area determined to be life category III, the presence of a person is estimated at a longer time interval than the area determined to be life category II. By estimating the absence of a person at a time interval shorter than the area determined as II, the time required for the presence estimation is set longer, and the time required for the absence estimation is set shorter. Furthermore, as described above, the life division of each region changes depending on the long-term accumulation result, and accordingly, the time required for the presence estimation and the time required for the absence estimation are variably set.

  Further, the rotational speed control of the fan 8 and the wind direction control of the upper and lower blades 12 and the left and right blades are performed according to the air conditioning setting in each of the areas A to I. These controls will be described below.

  Wind direction control during heating is performed by controlling the wind direction in front of the person's feet in the area where it is determined that there is a person, so that warm air reaches the vicinity of the feet, and during air conditioning, the wind direction control is performed above the person's head. By controlling, the cool air reaches above the head. The wind direction is adjusted by the rotational speed of the fan 8 and the angles of the upper and lower blades 12 or the left and right blades.

  FIG. 18 shows the rotation control of the upper and lower blades 12, and when the air conditioner is stopped, as shown in FIG. 18A, the front panel 4, the upper and lower blades 12, and the middle blade 14 are all closed. .

  At the time of cooling, in order to make the blown air (cold air) reach above the human head (cooling ceiling airflow), the state shown in FIG. 18 (a) to the state shown in FIG. 18 (b) are passed through FIG. 18 (c). The state shown in is reached. First, the arms 18 and 20 are driven and controlled so that the front panel 4 is separated from the front opening 2 a, and the arms 22 and 24 are driven and controlled so that the upper and lower blades 12 are separated from the outlet 10.

  In the state of FIG. 18C, the air blown out from the blowout port 10 is guided in the horizontal direction by the upper and lower blades 12, but the downstream end of the upper and lower blades 12 is curved upward, so that it is far from the room. Can send air up to. At this time, the upper part of the blower outlet 10, that is, the lower part of the front panel 4 is closed by the middle blade 14, and a part of the air blown out from the blower outlet 10 is not led to the front opening 2 a.

  On the other hand, at the time of heating, in order to make the blown air (warm air) reach the vicinity of the person's feet (heating airflow), the state shown in FIG. 18 (a) to the state shown in FIG. 18 (b) are passed through FIG. The state shown in (d) is reached. In the state of FIG. 18 (d), the air blown out from the outlet 10 is guided obliquely downward by the upper and lower blades 12, but the downstream end of the upper and lower blades 12 is curved toward the main body, so Warm air that tends to accumulate upwards can be sent down the room.

  In addition, FIG.18 (e) is utilized at the time of air conditioning before stabilization, and blowing air is directed to a human body (air flow for human bodies).

FIG. 19 shows the set number of rotations of the fan 8 when air conditioning is performed in each of the areas A to I. A1, A2, and A3 are reference rotations of areas at short distance, medium distance, and long distance from the indoor unit, respectively. A4 is a rotation speed difference due to a difference in region when the distance is the same, and is set as follows, for example.
A1: 800 rpm (during heating), 700 rpm (during cooling)
A2: 1000 rpm (during heating), 900 rpm (during cooling)
A3: 1200rpm (during heating), 1100rpm (during cooling)
A4: 100 rpm (common for cooling and heating)

  Here, the expression “relative position” is introduced as an expression representing the positional relationship with the indoor unit, such as the distance from the indoor unit in each region, the angle from the front of the indoor unit, and the height difference.

  Further, the degree of air conditioning that is easy to air-condition in each region is expressed by an expression of air conditioning requirement level. It is assumed that the higher the air conditioning requirement level, the more difficult the air conditioning is, and the lower the air conditioning requirement level, the easier the air conditioning. For example, as the distance from the indoor unit increases, the blown air is difficult to reach and the air conditioning is difficult to perform. That is, the air conditioning requirement level and the relative position from the indoor unit are closely related, and in this embodiment, the air conditioning requirement level is determined according to the relative position from the indoor unit.

  Therefore, it means that the set rotation speed of the fan 8 in the case of performing air conditioning in each of the areas A to I is set higher as the air conditioning requirement level is higher. That is, as the position of the area to be air-conditioned is farther from the indoor unit, the set rotational speed of the fan 8 is set higher, and when the distance from the indoor unit is the same, the fan 8 is shifted to the left and right from the front of the indoor unit. The set rotation speed is set high. Further, when there is one area to be air-conditioned, it is set to the set rotation speed (air volume) of that area, and when there are a plurality of areas to be air-conditioned, it is set to the set rotation speed of the area where the degree of air conditioning requirement is high.

FIG. 20 shows the setting angles of the upper and lower blades 12 and the left and right blades during heating, and B1, B2, and B3 are reference upper and lower blade angles of a region at a short distance, a medium distance, and a long distance from the indoor unit, respectively. , B4 is the angle difference between the upper and lower blades when the distance is the same, whereas C1 and C2 are the reference left and right blade angles of the left and right regions (the counterclockwise direction is the counterclockwise direction), and C3 and C4 are the differences in the regions The angle difference between the left and right blades is, for example, set as follows. The angle of the upper and lower blades 12 is an angle when measured in the counterclockwise direction with 0 ° when the line connecting the front and rear ends of the blade is horizontal when the blade is convex upward, and this position is the reference. That's it.
B1: 70 °
B2: 55 °
B3: 45 °
B4: 10 °
C1: 0 °
C2: 15 °
C3: 30 °
C4: 45 °

  That is, when heating the area A or B close to the indoor unit, the upper and lower blades 12 are set to a first angle (for example, 70 °), and the rotation speed of the fan 8 is set to the first rotation speed (for example, 70 °). , 800 rpm), and the wind direction is controlled at the edge of the indoor unit side (in front of the person's feet) in the region A or B so that the warm air reaches the vicinity of the feet. In addition, when heating the area C, D, E or F at a medium distance from the indoor unit, the upper and lower blades 12 are set to a second angle (for example, 55 °) smaller than the first angle, The rotation speed of the fan 8 is set to a second rotation speed (for example, 1000 rpm) higher than the first rotation speed, and the wind direction is directed to the edge on the indoor unit side (in front of the human foot) in the region C, D, E, or F. The warm air is made to reach the vicinity of the feet. Furthermore, when heating the area G, H, or I farthest from the indoor unit, the upper and lower blades 12 are set to a third angle (for example, 45 °) smaller than the second angle, and the rotation of the fan 8 is performed. The number is set to a third rotational speed (for example, 1200 rpm) higher than the second rotational speed, and the wind direction is controlled at the edge of the indoor unit side (in front of the human foot) in the region G, H, or I, and in the vicinity of the foot The warm air is made to reach.

FIG. 21 shows the set angles of the upper and lower blades 12 and the left and right blades during cooling in the rising or unstable region, and E1, E2, and E3 are reference points for regions at short distance, medium distance, and long distance from the indoor unit, respectively. The upper and lower blade angles, E4, is the angle difference between the upper and lower blades due to the difference in the area when the distance is the same, while F1 and F2 are the reference left and right blade angles in the left and right regions (counterclockwise is the positive direction), and F3 and F4 Is the angle difference between the left and right blades due to the difference in area, and is set as follows, for example. Note that “rise” refers to the time when the operation of the air conditioner is started, and “unstable region” refers to a state where the current indoor air-conditioning state does not satisfy a set condition (for example, a set temperature).
E1: 50 °
E2: 35 °
E3: 25 °
E4: 10 °
F1: 0 °
F2: 15 °
F3: 25 °
F4: 35 °

FIG. 22 shows the setting angles of the upper and lower blades 12 and the left and right blades during cooling in the stable region, where H1 is a reference upper and lower blade angle in the case of ceiling airflow, and H2 is a reference upper and lower angle in the case of stripping airflow. The blade angle, H3 is the upper limit blade angle difference due to the difference in distance, while I1 and I2 are the reference left and right blade angles in the left and right regions (counterclockwise is the positive direction), and I3 and I4 are the left and right blades due to the difference in regions The angle difference is set as follows, for example. The stable region is a state where the current indoor air conditioning state is a set condition (for example, a set temperature).
H1: 180 °
H2: 190 °
H3: 5 °
I1: 0 °
I2: 15 °
I3: 25 °
I4: 35 °

  Here, as shown in FIG. 18 (c), the ceiling airflow is the airflow when the upper and lower blades 12 are positioned at the lower part of the air outlet 10 and all the blown air is received by the concave surface of the blade and the air is sent out. This means that the upper and lower blades 12 are positioned slightly above the ceiling air flow, and a part (a small amount) of the blowing air is also flowed to the convex surface side of the blade (below the blade). This is the airflow when the wind is sent out in a state where condensation is unlikely to occur.

  When cooling the area A or B close to the indoor unit, the upper and lower blades 12 are set below a predetermined angle (for example, 5 °) from the horizontal, and the rotational speed of the fan 8 is the first rotational speed (when heating) The rotation speed is lower than the first rotation speed and is set to 700 rpm, for example, and is set so that the cold air reaches above the head of the area A or B so that the cool air falls like a shower. Further, when cooling the region C, D, E, or F at a medium distance from the indoor unit, the upper and lower blades 12 are set substantially horizontal, and the rotational speed of the fan 8 is a second higher than the first rotational speed. The rotation speed is set to be lower than the second rotation speed at the time of heating, for example, 900 rpm, and is set so that the cool air reaches above the area C, D, E, or F overhead. Further, when cooling the region G, H, or I farthest from the indoor unit, the upper and lower blades 12 are set upward by a predetermined angle (for example, 5 °) from the horizontal, and the rotation speed of the fan 8 is the second rotation. Is set to a third rotational speed higher than the number (for example, 1100 rpm, which is smaller than the third rotational speed during heating), and is set to allow the cold air to reach above the region G, H, or I overhead. Yes.

  Next, the wind direction control performed according to the number of areas to be air-conditioned will be described with reference to the flowchart of FIG.

  After the operation of the air conditioner is started, the presence / absence determination of a person in the areas A to I is first performed in step S41, and one area determined to have a person in step S42, that is, one area to be air-conditioned. In such a case, in step S43, air conditioning is performed based on the air volume and direction set according to the area. If it is determined in step S42 that there is not one area to be air-conditioned, it is determined in step S44 whether there are two areas to be air-conditioned. If there are two areas to be air-conditioned, the process proceeds to step S45.

In step S45, the air volume is set to the set air volume of the area where the air conditioning requirement is high, and the arrangement mode of the two areas is identified as one of the five modes as shown in FIG. 24, and in the next step S46, Control is performed as shown in Table 6 according to the identified mode.

  Here, mode 1 represents the case of two areas adjacent to each other with a medium distance and the front of the indoor unit, and mode 2 represents the case of two areas adjacent to each other in the front-rear relationship with the angle substantially equal to the indoor unit. Represents. In addition, mode 3 represents the case of two regions where the angle with the indoor unit is substantially the same and is separated in the longitudinal relationship, mode 4 represents the case of two regions where the distance to the indoor unit is substantially the same and the angle is different, Mode 5 represents the case of two regions that are separated, in other words, two regions that are different in distance and angle from the indoor unit.

  The up-and-down wind directions of modes 1 to 4 are fixed to a low demand area during heating, and are fixed to a high demand area during cooling. In addition, the vertical wind direction in mode 5 controls the operation of the upper and lower blades 12 and after stopping for a predetermined time (fixed angle) in the first region of the two regions (first and second regions), The operation of changing the wind direction toward the first region is repeated after changing the wind direction toward the second region and stopping in the second region for a predetermined time. In addition, the stop time of each area | region is each set, for example according to the distance from an indoor unit, and it is preferable to lengthen a stop time, so that the distance from an indoor unit is far.

  The left and right wind directions in mode 1 are fixed at the center of two adjacent areas. In modes 2 and 3, it is assumed that the two areas are in substantially the same direction with different distances when viewed from the indoor unit. The wind direction is fixed in a highly requested area. Further, the left and right wind directions of mode 4 and the mode 5 comprising the arrangement of two spaced apart areas are controlled in the same way as the control of the upper and lower blades 12, and after stopping for a predetermined time in the first area, The operation of changing the wind direction toward the first area is repeated after changing the wind direction toward the second area and stopping in the second area for a predetermined time. The stopping time of each area is set according to the relative position from the indoor unit to each area, for example, the angle from the front of the indoor unit, and it is preferable to increase the stopping time as the angle from the front of the indoor unit increases. .

  If it is determined in step S44 that there are not two areas to be air-conditioned, in step S47, three or more areas to be air-conditioned are selected from the two modes, the normal mode and the special mode, depending on the arrangement. Judgment. Here, the special mode represents the case of a total of three areas, that is, a medium distance and two areas adjacent to each other across the front of the indoor unit, and one area that is a long distance and located in front of the indoor unit. The case of three or more areas excluding is denoted as normal mode. When there are three or more areas to be air-conditioned, the air volume is set to the set air volume of the area with the highest air-conditioning requirement level, and when it is determined to be the special mode (center adjacent) shown in FIG. In step S48, the wind direction is set in the same manner as in mode 1 of FIG.

  On the other hand, if it is determined in step S47 that the mode is not the special mode, control in the normal mode shown in FIG. 25 (b) or (c) is performed in step S49, and the vertical wind direction is the region closest to the indoor unit. The angle of the upper and lower blades 12 is changed between the set angle of the upper and lower blades 12 and the set angle of the upper and lower blades 12 in the region farthest from the indoor unit.

  In the normal mode, the left and right wind directions are set to the left end angle and the right end angle at the left and right blade setting angles in the regions at both ends (regions C and I in FIG. 25B and regions C and H in FIG. 25C). Set and stop at the left end angle for a predetermined time, then change the wind direction toward the right end side (swing), stop at the right end angle for a predetermined time and then change the wind direction toward the left end side region (swing) repeat. Note that the operating speed of the left and right blades during the swing is set slower than the operating speed of the left and right blades in the modes 4 and 5 described above. In addition, the stop time at the left end angle or the right end angle is set in accordance with, for example, the angle from the front of the indoor unit, and it is preferable that the stop time is increased as the angle from the front of the indoor unit increases.

  In addition, after each air-conditioning control is performed in step S43, S46, S48 or S49, it returns to step S41.

  As described above, the wind direction control by the upper and lower blades 12 or the left and right blades is performed according to the area where the person is present. The higher the air conditioning requirement level and the greater the outside air load, the more the set temperature and the person set by the remote controller There is a tendency that the temperature difference from the actual temperature in the area is large. Therefore, a temperature correction method for minimizing this temperature difference will be described below.

First, temperature correction when a person is present only in one region will be described.
During heating, as the area to be air-conditioned is farther from the indoor unit or closer to the left and right ends when viewed from the indoor unit, warm air is less likely to reach. The lower the correction is made, the closer to the center as viewed from the indoor unit. On the contrary, during cooling, the region where cold air is difficult to reach is corrected lower, while the region where cold air is easy to reach is corrected higher.

  26 and 27 show the intake air temperature of the indoor unit during heating so that the temperature in each of the areas A to I becomes the remote control set temperature according to the outside air temperature detected by the outside air temperature sensor (not shown). FIG. 26 shows temperature correction values for correction. The temperature correction value in FIG. 26 corresponds to the outside air temperature region X in FIG. 28, and the temperature correction value in FIG. 27 corresponds to the outside air temperature region Y in FIG.

  In other words, the lower the outside air temperature, the larger the correction value. In the changing outside air temperature, the outside air temperature is lower than the first outside air temperature without being corrected at the outside air temperature higher than the first outside air temperature (13 ° C.). Then, it enters the outside air temperature region X from the region without correction, and enters the outside air temperature region Y from the outside air temperature region X when the outside air temperature further falls below the second outside air temperature (5 ° C.). On the other hand, in the increasing outside air temperature change, when the outside air temperature lower than the third outside air temperature (9 ° C.) is the outside air temperature region Y and the outside air temperature rises above the third outside air temperature, the outside air temperature region Y When entering the region X and the outside air temperature further rises above the fourth outside air temperature (17 ° C.), the temperature is not corrected.

  On the other hand, the temperature correction value at the time of cooling is a value obtained by reversing + and-of the temperature correction values shown in FIGS. 26 and 27, and the outside air temperature region corresponding to FIG. 28 with respect to the outside air temperature change is as shown in FIG. In this case, the first to fourth outside air temperatures are appropriately set.

  As an example, when heating, when the outside air temperature is 3 ° C., the remote control set temperature is 23 ° C., and there are people in the area G, the temperature correction value is + 1 ° C. Therefore, the control target value (remote control set temperature + correction value) is 24 ° C.

Next, temperature correction when there are people in a plurality of regions will be described in detail. First, regions A to I are divided into three blocks as follows.
First block: areas A, C, G
Second block: areas D, E, H
Third block: areas B, F, I

  These three blocks are located on the left, center, and right, respectively, when viewed from the indoor unit. Using six or more sensors, the area to be air-conditioned is further divided into three areas. Also when dividing into two or more blocks, a plurality of areas located in substantially the same direction as viewed from the indoor unit are assigned to the same block.

Further, the areas A to I are divided into a distance 1 area, a distance 2 area, and a distance 3 area as follows according to the distance from the indoor unit.
Area of distance 1: areas A and B
Area of distance 2: areas C, D, E, F
Area of distance 3: areas G, H, I

  In this way, each area A to I is divided by block and distance, and when a plurality of people are in the same block during heating, the temperature correction values set for each area A to I are first arithmetically averaged and obtained. The obtained temperature correction value is further corrected using the temperature correction value shown in FIG. The uncorrected region, region X, and region Y shown in FIG. 30 are the same as the regions shown in FIG. 28, but the correction value is changed according to the difference in distance within the same block. Is different. When heating, when multiple people are located in the front-rear direction when viewed from the indoor unit, as described above, the direction of the wind is controlled in front of the person closest to the indoor unit. It is hard for hot air to reach.

Therefore, as shown in FIG. 30, the temperature correction value is set as follows in accordance with the distance difference in the block to increase the control target value.
Region X
The distance difference in the block is 2: Temperature correction value is set to + 0.5 ° C. The distance difference in the block is 1 or 0: Temperature is not corrected. Region Y
Distance difference in the block is 2: Temperature correction value is set to + 1.0 ° C Distance difference in the block is 1: Temperature correction value is set to + 0.5 ° C Distance difference in the block is 0: No temperature correction

  In this case, the average temperature correction value in the block is first calculated using the temperature correction value for each region shown in FIG. 26 or FIG. 27, and this average temperature correction value is added to the temperature correction value based on the distance difference between before and after. To determine the total temperature correction value.

As an example, when heating, the outside air temperature is 3 ° C, the remote control set temperature is 23 ° C, and there are people in the area B and the area I in the same block, the control target value (remote control set temperature + correction value) is as follows: To be determined.
Temperature correction value for each region = (− 1 ° C. + 1 ° C.) / 2 = 0 ° C.
Temperature correction value based on distance difference = + 1 ° C
Control target value = 23 ° C. + 0 ° C. + 1 ° C. = 24 ° C.

On the other hand, when there are people in a plurality of blocks during heating, the temperature correction is performed using the temperature correction value shown in FIG. When there are people in a plurality of blocks during heating, the amount of warm air distribution to the plurality of people decreases as the left / right deviation width as viewed from the indoor unit increases. Therefore, as shown in FIG. The temperature correction value is set as follows according to the position of the block to increase the control target value.
Region X
If there are people in two separate blocks (first block and third block): Set the temperature correction value to + 0.5 ° C. If there are people in the other two blocks: No temperature correction. Y
If there are people in two separate blocks: Set the temperature correction value to + 1.0 ° C. If there are people in the other two blocks: Set the temperature correction value to + 0.5 ° C.

  In this case, the average temperature correction value in the block is first calculated using the temperature correction value for each region shown in FIG. 26 or 27, and the average temperature of all blocks is calculated based on the average temperature correction value in this block. A correction value is calculated, and the calculated average temperature correction value of all blocks is added to the temperature correction value shown in FIG. 31 to determine the total temperature correction value.

As an example, when heating, the outside air temperature is 3 ° C., the remote control set temperature is 23 ° C., and there are people in the area G and the area I that span two blocks, the control target value (remote control set temperature + correction value) is To be determined.
Temperature correction value for each region = (1 ° C + 1 ° C) / 2 = 1 ° C
Temperature compensation value between blocks = + 1 ° C
Control target value = 23 ° C. + 1 ° C. + 1 ° C. = 25 ° C.

  In addition, about the temperature correction value at the time of air_conditioning | cooling in case a person exists in a some block, since the temperature correction value at the time of heating can be calculated suitably, the description is abbreviate | omitted.

  In the case of wind direction control using the left and right blades, it is possible to introduce the concept of human “activity” into the temperature correction value for each block. First, the “activity amount” will be described.

  A person's activity level is a concept that indicates the degree of human movement, and is classified into multiple activity level levels. For example, “rest”, “high activity level”, “active level”, “low activity level” are categorized.

  “Relax” refers to a situation where a person is still in the same place, such as relaxing on the sofa, watching TV, or operating a computer. If it persists, it will feel cold with decreased metabolic rate. The amount of activity “Large” means that the person is active in a wide area such as indoor cleaning, and feels hot due to increased metabolic rate. The activity amount “medium” means that it is active in a narrow area such as cooking, and it feels a little hot due to an increase in metabolic rate. The activity amount “small” means that the activity is somewhat in the same place such as a meal, and no significant change in the metabolic rate is observed.

Next, a method for classifying human activities will be described in detail with reference to the flowchart of FIG.
First, in step S51, the reaction frequency (with output pulse) of each sensor 26, 28, 30, 32, 34 is measured every predetermined time T1, and in step S52, it is determined whether or not the number of times of measurement has reached a predetermined number. . The predetermined time T1 is the same as the predetermined period T1 in the above-described presence / absence determination of a person, but here, for example, it is set to 2 seconds, for example, and the predetermined number of measurement times is set to 15 times, for example. It is assumed that 15 measurements are collectively referred to as 1 unit measurement (measurement for 30 seconds). Further, the “measurement number” here is the number of measurements in any one of the areas A to I, and the same measurement is performed for all the areas A to I.

  If it is determined in step S52 that the number of measurements has not reached the predetermined number, the process returns to step S51. If it is determined that the number of measurements has reached the predetermined number of times and one unit measurement has been completed, four unit measurements ( It is determined whether the measurement for 2 minutes has been completed. In step S53, if 4-unit measurement is not completed, the process returns to step S51. If 4-unit measurement is completed, the process proceeds to step S54.

  In step S54, it is determined whether or not the total reaction frequency of the sensor of the 4-unit measurement (the past four unit measurements including the current one-unit measurement) has reached a predetermined number (for example, five times). If it has reached, the total number of unit measurements (p, which will be described in detail later) after it is determined as “small amount of activity” is cleared in step S55, and then the process proceeds to step S56.

In step S56, it is determined whether or not the total response frequency of the sensors in all the areas A to I has reached a predetermined number (for example, 40 times). All blocks determined to be present except for blocks determined later (described later) are determined to be “high activity amount”. On the other hand, if the predetermined number has not been reached, in step S58, the four unit measurement sensor The block to which the region where the total response frequency reaches a predetermined number is determined as “active amount”. After the activity amount determination in step S57 or step S58, in step S59, 1 is subtracted from the unit measurement number (q), and the process returns to step S51. That is, the block to which the area where the total response frequency of each sensor exceeds a predetermined number and is determined as “active” or “active” is measured after the next one unit is measured, When the total response frequency of the 4-unit measurement in the above exceeds a predetermined number, it is determined that the activity level is “high” or “active level”.

  If it is determined in step S54 that the total response frequency of the sensor is less than a predetermined number in the four-unit measurement, it is determined in step S60 whether the block to which the region belongs is “rest”. In step 61, it is determined that the activity amount is small. In the next step S62, the total number of unit measurements (p) after being determined as “small amount of activity” is counted, and in step S63, after being determined as “low amount of activity”, 60 units are measured (measurement for 30 minutes). ) Is finished.

  If it is determined in step S63 that the 60 unit measurement has not been completed, the process proceeds to step S59. On the other hand, if it is determined that the 60 unit measurement has been completed, only the area is in the block to which the area belongs. As long as it is determined as “rest” in step S64, the process proceeds to step S59. In other words, by shifting to step S59, each block has “active mass”, “active”, and “depending on the total reaction frequency of each sensor in the past four unit measurements including the next one unit measurement. It will be newly determined as “activity low” or “rest”.

  At the beginning of activity amount measurement after the air conditioner is turned on, the activity amount in any region is unknown, but according to this flowchart, each region A to I is not measured until 4 units measurement is completed from the start of measurement. In the block to which “active activity amount”, “medium activity amount”, or “activity amount small” is determined, and the measurement of 60 units is completed, the determination of “rest” is performed. Therefore, since there is no “rest” block for a while after the start of measurement, NO is determined in step S60, and “small amount of activity” is determined in step S61. After that, the block that has been continuously determined as “low activity” is determined to be “rest” in step S64 after the end of the 60 unit measurement, and if the total response frequency of the 4-unit measurement sensor is less than the predetermined number after that, Subsequently, it is determined as “rest”.

  Note that the reason for clearing the total number of unit measurements (p) after it has been determined that “activity is low” in step S55 is that the determination of “rest” starts from the determination of “activity low”. It is.

In summary, each sensor 26, 28, 30, 32, 34 functions as an activity amount detection means in addition to a function as a human body detection means, and according to the flowchart of FIG. For example, it is determined as follows.
(1) Rest A block that has only sensor response frequency less than 5 times / 2 minutes lasted for 30 minutes or more (2) High activity amount The sum of sensor response frequencies in all regions A to I is 40 times / 2 minutes, When the sensor response frequency continues at least 5 times in 2 minutes in at least one area, all blocks except the block that is determined to be “rest” (3) Activity amount Sum of sensor response frequencies in all areas A to I If the sensor response frequency is less than 40 times / 2 minutes, the block to which the sensor response frequency lasts 5 times or more in 2 minutes belongs. (4) Activity level is small. block

Further, the temperature correction value of each block is set as follows according to the activity amount of the person determined in this way.
(1) Resting Since the metabolic rate gradually decreases, the next temperature correction value is corrected to + 0.5 ° C., for example, every 30 minutes using the upper limit value.
Upper limit during cooling: + 1 ° C
Upper limit during heating: + 1 ° C
(2) Large amount of activity Cooling: -2 ° C
During heating: -2 ° C
(3) Medium activity amount Cooling: -1 ° C
During heating: -1 ° C
(4) Small activity amount During cooling: Not corrected as standard activity amount During heating: Not corrected as standard activity amount Note that absent blocks are not corrected.

  Therefore, when the wind direction control of the left and right blades is performed in consideration of the temperature correction value for each block and the amount of human activity, the temperature correction value for each block based on the position of the person is calculated by the method described above, and the block according to the amount of activity is calculated. Separate temperature correction values are calculated, and these temperature correction values are added to the remote control set temperature to obtain a control target value.

  The air conditioner according to the present invention can achieve optimum air conditioning control by performing air conditioning control in accordance with the position of the person and the amount of activity, and thus is useful as an air conditioner for general households.

The indoor unit of the air conditioner concerning this invention is shown, (a) is a front view, (b) is a front view of the state which removed the cover of the human body detection apparatus provided in the upper part, (c) is a side view. FIG. 1B shows the indoor unit in FIG. 1B with the front panel opening the front opening, where FIG. 1A is a perspective view and FIG. 1B is a side view. 1 is a longitudinal sectional view of the indoor unit of FIG. The human body detection apparatus is shown, (a) is a front view, (b) is a side view, (c) is a perspective view. Schematic showing the change of the visual field range based on the change of the mounting position of the human body detection device Side view of an indoor unit when a sensor unit constituting a human body detection device is provided on the surface of an arbitrary sphere Side view of an indoor unit when an arbitrary sphere is cut off at an arbitrary plane and a sensor unit is provided at the intersection of this plane and the optical axis of the sensor unit Front view of the sensor unit of FIG. Schematic showing the human body position determination area detected by each sensor unit provided in the human body detection device Schematic of area division detected by three sensor units Flowchart for setting region characteristics for each region shown in FIG. The flowchart which finally determines the presence or absence of a person in each area | region shown by FIG. Timing chart showing the presence / absence determination of people by each sensor unit Schematic plan view of a residence where the indoor unit of FIG. 1 is installed The graph which shows the long-term accumulation result of each sensor unit in the residence of FIG. Schematic plan view of another residence where the indoor unit of FIG. 1 is installed The graph which shows the long-term accumulation result of each sensor unit in the residence of FIG. The longitudinal cross-sectional view of the indoor unit which shows the operating state of the up-and-down blade provided in the indoor unit of FIG. Schematic showing the set number of rotations of the fan when air-conditioning each area shown in FIG. 9 Schematic showing the set angles of the upper and lower blades and the left and right blades when heating each area shown in FIG. Schematic showing the set angles of the upper and lower blades and the left and right blades when standing up or unstable when cooling each region shown in FIG. Schematic showing the set angles of the upper and lower blades and the left and right blades at the time of cooling when cooling each region shown in FIG. Flow chart showing wind direction control performed according to the number of areas to be air-conditioned Schematic showing the arrangement mode when air-conditioning two areas Schematic showing the arrangement mode when air-conditioning three areas Schematic of human body position determination area showing temperature correction value for correcting the intake air temperature of the indoor unit during heating Schematic of human body position determination area showing another temperature correction value for correcting the intake air temperature of the indoor unit during heating Schematic diagram of outside air temperature classification for setting different temperature correction values during heating Schematic diagram of outside air temperature classification for setting different temperature correction values during cooling Schematic diagram of outside air temperature classification for setting different temperature correction values based on the difference in distance from indoor units during heating Schematic diagram of outside air temperature classification for setting different temperature correction values based on the angle difference from the indoor unit during heating Flow chart showing how to classify human activity

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Main body 2a Front opening part 2b Upper surface opening part 4 Movable front panel 5 Cover 6 Heat exchanger 8 Fan 10 Outlet 12 Upper and lower blades 14 Middle blade 16 Middle blade drive mechanism 18, 20, 22, 24 Arm 26, 28, 30, 32, 34 Sensor unit 26a, 28a, 30a, 32a, 34a Circuit board 26b, 28b, 30b, 32b, 34b Lens 36 Sensor holder

Claims (8)

An air conditioner that detects the presence or absence of a human by a human body detection sensor provided in an indoor unit and performs air conditioning control based on a control target value set by a desired set temperature ,
The plurality of human bodies are detected at a first predetermined time for each of the plurality of areas by dividing the area to be air-conditioned into a plurality of areas by a plurality of human body detection sensors according to the position of a person in the area to be air-conditioned. Set the region characteristics according to the sensor response results,
According to the region characteristics, the plurality of regions are classified into at least a first region having a region characteristic in which a person is spending longer time and a second region having a region characteristic in which a person is spending less time than the first region. And
According to the reaction results of the plurality of human body detection sensors for a second predetermined time
When detecting the presence of a person in the first region, the presence of a person is estimated at a shorter time interval than the second region, whereas when detecting the absence of a person in the first region, By estimating the absence of people over a longer time interval than the second region,
The first area is set to have a shorter time required for presence estimation, and the time required for absence estimation is set longer than the second area,
Further provided an activity amount detecting means for detecting the amount of activity of a person who is in the plurality of regions, respectively, to calculate the temperature correction value in accordance with the activity amount of the person detected by the activity amount detecting means, the temperature correction value An air conditioner characterized in that the air conditioning control is performed as a control target value by adding to a desired set temperature .   2. The air according to claim 1, wherein the activity amount is classified into a plurality of activity amount levels based on a reaction frequency of the activity amount detection unit within a first predetermined time for each of the plurality of regions. Harmony machine.   The plurality of activity amount levels are further classified based on a total sum of reaction frequencies of the activity amount detecting means within a second predetermined time longer than a first predetermined time in all regions of the plurality of regions. The air conditioner according to claim 2.   The plurality of areas are divided into a plurality of blocks based on positions in the left-right direction from the indoor unit, and any one of the plurality of activity level is set for each of the plurality of blocks. The air conditioner according to claim 2 or 3. A temperature correction value is set for each of the plurality of regions, the temperature correction value is calculated according to the activity amount of the person detected by the activity amount detection means , and the temperature correction value is added to a desired set temperature. The air conditioner according to any one of claims 1 to 4 , wherein air-conditioning control is performed as a control target value .   The air conditioner according to claim 5, wherein the temperature correction value varies depending on an outside air temperature. When the human body detection sensor detects that there are people in at least two of the plurality of regions, the temperature correction value is further corrected by a relative positional relationship between the two regions and the indoor unit. The air conditioner according to claim 5 or 6 . The air conditioner according to any one of claims 1 to 7 , wherein the activity amount detection means is the plurality of human body detection sensors.

Images