JP2023078510A - Air conditioner and ventilation device - Google Patents

Abstract

To guide pollutants generated from a person indoors quickly to a suction port without dispersing them indoors, while air-conditioning the indoors, by properly adjusting the wind direction of a blowout port.SOLUTION: An air conditioner includes: an indoor unit 3 including a suction port 6 arranged on a ceiling surface of an air-conditioning target space; a plurality of blowout ports 7 arranged at a side edge of the air-conditioning target space; wind direction control means 8 capable of adjusting the wind direction of the air blown out from the plurality of blowout ports 7 from the direction going toward right below the blowout ports to the direction going toward right below the suction port 6; person indoors detection means 10 for detecting the position of a person indoors existing in the air-conditioning target space; airflow reaching region setting means for setting an airflow reaching region so as to include the position of the person indoors 10 and the suction port 6; and a control device for controlling the wind direction of the air blown out from the plurality of blowout ports 7 to face a boundary of the airflow reaching region.SELECTED DRAWING: Figure 5

Description

TECHNICAL FIELD The present disclosure relates to an air conditioner that performs air conditioning by installing a plurality of outlets in a target space and a ventilator that performs ventilation of the target space.

When air-conditioning a relatively large indoor space with multiple occupants, a common air-conditioning method is to arrange multiple outlets evenly at predetermined intervals so that the entire indoor space has a uniform temperature. . However, in such an air conditioning method, there is a problem that an area in which the indoor temperature cannot be adjusted is formed when the air conditioning load is unevenly distributed in the room. In addition, there is a problem that unnecessary energy consumption occurs due to air conditioning even in an area where no one is present.

When air-conditioning an indoor space where the air-conditioning load is unevenly distributed, the indoor space is divided into multiple air-conditioning zones, and the air volume and airflow direction of the outlets installed in each air-conditioning zone are adjusted according to the location and number of people in the room. An air conditioning control system has been proposed (see Patent Document 1, for example).

JP-A-2005-221209

However, in the air conditioning control system described in Patent Document 1, since the position of the suction port is not specified, the air blown into the indoor space loses its blowing speed after passing near the people in the room, It will spread like drifting all over. This diffused air contains contaminants such as odors, dust, and droplets generated by people in the room, and thus may contaminate the room.

The present invention has been made to solve the above-mentioned problems, and by appropriately adjusting the airflow direction of the air outlet, the indoor space is air-conditioned and the pollutants generated by the people in the room are diffused into the room. It is possible to quickly guide to the suction port without causing

In order to achieve the above objects, the air conditioner according to the present disclosure includes
an indoor unit comprising a suction port arranged on the ceiling surface of a space to be air-conditioned, and a removing means for removing contaminants contained in the air sucked from the suction port;
a plurality of outlets connected to the indoor unit by an air conveyance path and arranged at the edge of the air-conditioned space;
wind direction control means capable of adjusting the wind direction of the air blown out from the plurality of outlets from a direction directly below the outlets to a direction directly below the inlet;
occupant detection means for detecting the position of a occupant present in the air-conditioned space;
airflow reaching area setting means for setting an airflow reaching area so as to include the position of the person in the room and the position of the suction port;
a control device that adjusts the wind direction control means so that the wind direction of the air blown out from the plurality of outlets is directed to the boundary of the airflow reaching area;
is provided.

The air conditioner according to the present disclosure determines the airflow reachable area based on the position of the occupant in the room to be air-conditioned, and adjusts the wind direction of the blown air toward the boundary of the airflow reachable area, thereby The emitted pollutants can be quickly led to the suction port without diffusing into the air-conditioned room. Furthermore, since the blown air is clean with contaminants removed by the filter, the air-conditioned room can always be kept clean.

1 is a diagram showing an example of a schematic configuration of an air conditioner according to Embodiment 1. FIG. FIG. 2 is a plan view showing an example of the arrangement of the air outlet and the suction port of the air conditioner according to Embodiment 1; FIG. 4 is an elevational view showing the wind direction control range of the blown airflow of the air conditioner according to Embodiment 1; 4 is a plan view showing an example of wind direction control of the air conditioner according to Embodiment 1. FIG. 4 is an elevational view showing an example of wind direction control of the air conditioner according to Embodiment 1. FIG. FIG. 2 is a schematic diagram showing the flow of air generated by the wind direction control of the air conditioner according to Embodiment 1; FIG. 2 is a plan view showing an example of an airflow reaching area formed by the air conditioner according to Embodiment 1; 4 is a plan view showing another example of an airflow reaching area formed by the air conditioner according to Embodiment 1. FIG. 4 is a flow chart showing a blowout wind direction control operation of the air conditioner according to Embodiment 1. FIG. FIG. 4 is a schematic diagram of an indoor unit that constitutes an air conditioner according to Embodiment 2; FIG. 11 is an elevational view showing an air volume control situation of an air-conditioned room in which the indoor unit according to Embodiment 2 is installed; FIG. 10 is a block diagram showing the configuration of a control device for an air conditioner according to Embodiment 2; FIG. 11 is an elevational view showing the configuration and installation situation of a ventilator according to Embodiment 3;

Below, an air conditioner and an air conditioning system according to embodiments of the present disclosure will be described in detail based on the drawings. Note that the specific setting examples described in the embodiments of the present disclosure are examples, and are not limited to the described setting examples. Further, in the embodiments of the present disclosure, communication means either one or both of wireless communication and wired communication. Further, in the embodiment of the present disclosure, the communication may be a communication system in which wireless communication and wired communication are mixed. Also, communication from one device to another device may be performed by wire communication, and communication from another device to another device may be performed by wireless communication.

Embodiment 1.
FIG. 1 is a schematic configuration diagram of an air conditioner according to Embodiment 1 of the present disclosure. As shown in FIG. 1, the air conditioner 1 has an outdoor unit 2 and an indoor unit 3 connected by a liquid pipe 4 and a gas pipe 5 to form one refrigerant circuit.

The outdoor unit 1 incorporates a compressor 12 whose operating capacity is adjustable, a four-way valve 13, an outdoor heat exchanger 14, an outdoor fan 15, and an expansion valve 16. Switching between the cooling mode and the heating mode by the four-way valve 13, the operating capacity of the compressor 12, the rotation speed of the outdoor fan 15, and the throttle opening of the expansion valve 16 are adjusted according to instructions from the control device 11.

The control device 11 is composed of, for example, a microcomputer, and includes a CPU, a RAM, a ROM, etc. The ROM stores a control program and a program corresponding to a flowchart described later. The control device 11 may be built in the outdoor unit 1 or may be built in a remote controller installed indoors. Alternatively, it may be built in a smart phone, mobile phone, PDA (Personal Digital Assistant), personal computer, or tablet, and communicate sensor signals and control signals via the Internet line.

The control device 11 receives instructions for operation information such as the operation mode, temperature setting, humidity setting, and air volume setting of the air conditioner 1 . When the air conditioner 1 receives an instruction to start the heating operation or the cooling operation, it performs an operation that adjusts the operating capacity of the compressor 12 so that the intake air temperature approaches the set temperature. Further, the control device 11 constantly detects the number and positions of people present in the air-conditioned room from the human detection means 10 installed in the air-conditioned room.

A filter 19, an indoor heat exchanger 17, and an indoor fan 18 are incorporated in the indoor unit 3 embedded in the ceiling of the room to be air-conditioned. The indoor unit 3 sucks indoor air from the suction port 6 that opens to the ceiling surface of the room to be air-conditioned, removes contaminants with the filter 19, and then heat-exchanges with the refrigerant circulating in the refrigerant circuit with the indoor heat exchanger 17. Generating conditioned air.

The filter 19 functions to trap, decompose and remove pathogens such as dust, odors and viruses contained in the air sucked from the suction port 6 . A duct 9 is connected to the air outlet side of the indoor unit 3, and clean conditioned air is supplied to the air-conditioned room from a plurality of air outlets 7a to 7d installed on the ceiling surface. there is The air outlets 7a to 7d are provided with wind direction adjusting parts 8a to 8d, respectively, so that the blowing angle of the blown air can be adjusted.

The filter 19 is composed of one or a combination of one or more of coarse dust, HEPA, activated carbon, and those having photocatalytic action. Also, the contaminants captured by the filter 19 can be decomposed and detoxified by a corona discharge device, an ultraviolet irradiation device, or the like.

2 is a plan view showing an example of the arrangement of the outlet and the inlet of the air conditioner according to Embodiment 1. FIG. The indoor unit 3 is installed in the ceiling substantially in the center of the air-conditioned room 20 formed by four walls including the ceiling and the floor, and the suction port 6 opens to the ceiling surface of the air-conditioned room 20 . The outlets 7a, 7b, 7c, and 7d are connected to the indoor unit 3 by a duct 9, and are arranged in close proximity to the four north, south, east, and west walls forming the air-conditioned room 20, respectively. The human detection means 10 is installed near the ceiling at the corner of the air-conditioned room 20 so that the entire air-conditioned room 20 can be seen.

In FIG. 2, P1 is a hypothetical point on the floor just below the inlet 6, and Pa is a hypothetical point on the floor just below the outlet 7a. La is an imaginary straight line on the floor connecting Pa and P1. Although illustration is omitted, straight lines Lb, Lc, and Lc connecting virtual points Pb, Pc, and Pd directly below the outlets 7b, 7c, and 7d with P1 are also assumed. These imaginary straight lines are used for control to determine the wind direction of each of the outlets 7a to 7d.

FIG. 3 is an elevational view showing the wind direction control range of the blown airflow of the air conditioner according to Embodiment 1. FIG. The indoor unit 3 is installed in the ceiling substantially in the center of the air-conditioned room 20, and the suction port 6 opens to the ceiling surface. The air sucked by the indoor unit 3 is temperature-controlled for air conditioning by an indoor heat exchanger 17 incorporated in the indoor unit 3, and then sent to the outlet 7a via the duct 9. - 特許庁

The wind direction adjusting unit 8a can adjust the blowing angle θa of the blown air between a point P1 directly below the suction port 6 and a point Pa directly below the blowing port 7a. That is, the air outlet 7a can blow air toward an arbitrary point on the imaginary straight line La connecting P1 and Pa. The blowing angles θb, θc, and θd of the blowing port 7b and the blowing ports 7c and 7d (not shown) can be adjusted in the same manner.

4 is a plan view showing an example of wind direction control of the air conditioner according to Embodiment 1, and FIG. 5 is an elevation view showing an example of wind direction control of the air conditioner according to Embodiment 1. FIG. . In FIG. 4, 31 to 35 are people in the room detected by the human detection means 10. FIG. The human detection means 10 detects the positions of a plurality of people in the room and transmits position information to the control device 11 . The control device 11 recognizes the relative positional relationship between the position of the person in the room and the suction port 6 and the discharge ports 7a to 7d on the horizontal plane of the air-conditioned room 20. FIG.

Subsequently, the control device 11 calculates a virtual straight line Va that is orthogonal to the virtual straight line La and passes through the position of the person 32 who is closest to the outlet 7a. Further, the control device 11 obtains the intersection Ta of the virtual straight line La and the virtual straight line Va, and adjusts the direction of the blowing air from the blower outlet 7a toward the intersection Ta on the floor surface.

Similar control is performed for the outlets 7b, 7c, and 7d. That is, at the outlet 7b, the wind direction adjuster 8b is adjusted toward the intersection Tb of the straight line Vb and the straight line Lb passing through the nearest occupant 34 in the room. Similarly, the wind direction of the outlet 7c is adjusted toward the intersection Tc, and the wind direction of the outlet 7 is adjusted toward the intersection Td. In this way, the control device 11 determines the blowing wind directions of all the blowing outlets 7a to 7d based on the positional information of the occupants sent from the human detecting means 10. FIG.

FIG. 6 is a schematic diagram showing the flow of air generated by the wind direction control of the air conditioner according to Embodiment 1. FIG. In FIG. 6, arrows 41 to 45 pointing upward from persons 31 to 35 in the room respectively represent rising air currents generated from human bodies having a temperature higher than the surroundings, and are called thermal plumes. The thermal plumes 41 to 45 are polluted air containing contaminants such as exhaled breath, dust, droplets, etc. emitted from the human body.

The air currents emitted from the outlets 7a and 7b indicated by arrows in FIG. 6 are blown from the ceiling surface near the wall toward the feet of the people in the room, and flow near the people in the room while gradually losing speed. . The airflow that has lost its velocity near the persons 31 to 35 in the room flows toward the suction port 6 while being caught in the thermal plumes 41 to 45 having an upward velocity.

For example, in the conventional technology, when the blown air is blown straight down from the blowing port 7a, the blown air that reaches the vicinity of the floor loses its speed and then spreads gently over the entire air-conditioned room 20. - 特許庁On the other hand, according to the embodiment of the present disclosure, by using the upward flow of the thermal plumes 41 to 45, contaminants are quickly sucked into the suction port 6 without diffusing throughout the air-conditioned room 20. FIG.

7 is a plan view showing an example of an airflow reaching area formed by the air conditioner according to Embodiment 1. FIG. In FIG. 7 , a rectangular area surrounded by virtual straight lines Va, Vb, Vc, and Vd is an airflow reaching area 51 . The airflow reaching area 51 includes all the persons 31 to 35 in the room and the virtual point P1 immediately below the air inlet. The air blown from the outlets 7a, 7b, 7c, and 7d is blown toward the virtual points Ta, Tb, Tc, and Td. Almost lost speed.

The blown air is imparted with an upward velocity by thermal plumes 41-45 generated from persons 31-35 in the room, and is imparted with a lateral velocity toward the suction port 6 in the center of the airflow reaching area 51. FIG. By this action, contaminants emitted from persons 31 to 35 in the room are quickly sucked into the suction port 6 without going to the outside of the airflow reachable area 51, and the air-conditioned room 20 is maintained in a clean state. can do.

The setting of the airflow reaching area 51 is not limited to the method described above, and other methods may be used. FIG. 8 is a plan view showing another example of the airflow reaching area formed by the air conditioner according to Embodiment 1. FIG. In FIG. 8, the airflow reaching area 52 is a convex polygon that includes all the people 31 to 35 in the room and the virtual point P1 directly below the air inlet. This polygon is a convex hull in a two-dimensional plane.

Constituent elements of the convex hull are (1) to (3) shown below.
(1) Remove points included in a triangle determined by arbitrary three points of a plurality of occupant positions from the occupant position set.
(2) After examining all three-point pairs, the remaining occupant positions are the vertices of the convex hull.
(3) A convex hull can be constructed by arranging the remaining occupant positions in order of declination with respect to a point (for example, the center of gravity) inside the convex hull.

In FIG. 8 as well, the direction of the air blown out from the outlet 7a is controlled so that it is directed to the intersection Ta between one side of the airflow reaching region 52 and the virtual straight line La. Similarly, the wind directions of the outlets 7b, 7c, and 7d are determined so as to direct the intersections Tb, Tc, and Td of the boundary of the airflow reaching region 52 and the imaginary straight lines Lb, Lc, and Ld. The airflow reachable area is not limited to these setting methods, and may be set to a minimum circle that includes all the positions of persons in the room other than the above-described method, for example. As described above, the airflow reaching area is an area set on the floor surface of the air-conditioned space so as to include the persons in the room and the air intake.

FIG. 9 is a flow chart showing the airflow direction control operation of the air conditioner according to Embodiment 1. FIG. When the operation of the air conditioning apparatus 1 is started according to a user's instruction or the like, the control device 11 recognizes the positions of people in the air-conditioned space 20 detected by the human detection means 10 (step S101). The detection of the positions of people in the room is a processing step that is repeatedly performed at predetermined intervals while the air conditioner 1 is operating.

Subsequently, the control device 11 determines whether the position of the person in the room recognized in step S101 this time has changed from the position of the person in the room recognized in step S101 last time (step S102). When it is determined in step 102 that the position of the person in the room has changed, the control device 11 newly sets the airflow arrival area (step S103). Further, if it is determined in step S102 that there is no change in the position of the person in the room, setting of the airflow reaching area and calculation of the wind direction of the outlet are not performed.

The airflow reaching area set in step S103 is an area including all persons in the room and the point P1 directly below the air inlet, and may be a rectangular area surrounded by the virtual straight lines Va, Vb, Vc, and Vd described above. It may be a convex hull.

From the following step S104, the blowing wind direction of a plurality of numbered blowing outlets k (k=1, 2, . . . , N) is calculated in order. In step S104, 1, which is the first number of the outlet k, is set, and in step S105, the wind direction of the outlet k is calculated. The wind direction of the outlet k is set so as to face the intersection Tk of the boundary line of the airflow reaching area set in step S103 and the virtual straight line Lk connecting the virtual point directly below the outlet k and the virtual point directly below the suction port. be done.

In step S106, k is incremented, and the wind direction calculation step S105 for outlet k is repeated until it is confirmed in step S107 that the wind direction calculations for all outlets have been completed. When it is determined in step S107 that the wind direction calculations for all outlets have been completed, the repeated calculation of the wind direction ends.
Subsequently, in step S108, the control device 11 instructs a plurality of outlets k (k=1, 2, .

Step S109 is a process of waiting until the next control timing by using a timer or the like. For example, when five minutes have passed, the control device 11 completes the processing of step S109, returns to step S101 again, and continues the wind direction control processing.

As described above, according to the first embodiment of the present disclosure, the airflow reaching area is determined so as to include the position of the person in the room to be air-conditioned and the position of the suction port, and air is blown toward the boundary of the airflow reaching area. By adjusting the wind direction of the air, the contaminants emitted from the people in the room can be quickly guided to the air inlet without diffusing into the air-conditioned room.

Contaminants are removed from the air sucked into the indoor unit 3 by the filter 19, and the air blown out again from the outlets 7a, 7b, 7c, and 7d is clean, so the room to be conditioned is always kept clean. can do.

Further, according to the air conditioner according to Embodiment 1 of the present disclosure, the air blown into the air-conditioned room reaches the vicinity of the floor surface at the boundary of the airflow arrival area where the person in the room exists, and the blowing air velocity Since most of the air is lost and becomes an insensible air current, the people in the room are not directly exposed to the cold air or the warm air, and thermal comfort can be ensured.

Embodiment 2.
FIG. 10 is a schematic diagram of an indoor unit that configures an air conditioner according to Embodiment 2 of the present disclosure. In FIG. 10, the indoor unit 103 cleans the air sucked from the suction port 6 by the filter 19, and then branches to a plurality of outlets 7a, 7b, 7c, and 7d by the duct 109. FIG. The duct 109 is provided with air volume adjustment units 61a, 61b, 61c, and 61d for adjusting the air volume distribution of the plurality of outlets 7a, 7b, 7c, and 7d.

The air volume adjusters 61a, 61b, 61c, and 61d can adjust the airflow resistance in three ways, for example, "strong," "medium," and "weak." The air volume adjustment of each outlet 7a, 7b, 7c, 7d is adjusted according to the wind direction of each outlet.

FIG. 11 is an elevational view showing the air volume control status of the air-conditioned room 20 in which the indoor unit 103 according to Embodiment 2 of the present disclosure is installed. In FIG. 11, the airflow direction of the air outlet 7a is controlled toward the virtual point Ta at the feet of the nearest person 31 in the room. At this time, the air volume adjustment unit 61a that determines the air volume of the blowout port 7a is set to "strong," "medium," or "weak" depending on the position of Ta.

In this embodiment, when the distance between the virtual point Pa directly below the outlet 7a and the virtual point P1 directly below the suction port 6 is Da1, and the distance between the virtual point Pa and the virtual point Ta is Daa, Daa relative to Da1 is The air volume is controlled based on the length ratio Ra (=Daa/Da1).

When Ra<20% and the nearest occupant 31 is close to the air outlet 7a, the air volume of the air outlet 7a is set to "high", and when 20%≦Ra<50%, the air volume is set to "medium". , and when Ra≧50%, the air volume is set to “weak”. That is, the control device 11 adjusts the air volume so that the more acute the blowing angle θa, the larger the air volume, and the closer the blowing angle θa becomes to the horizontal, the smaller the air volume.

In FIG. 11, the person 31 closest to the air outlet 7a is close to the virtual point P1, so the air volume of the air outlet 7a is set to "low", and the person 34 closest to the air outlet 7b is close to the air outlet Since it is close to 7b, the air volume is set to "strong". When the air volume is adjusted in this way, the horizontal blowing speed component toward the suction port 6 of each blowing port is equalized, so the time for the blown air to reach the suction port 6 is also equalized. Due to this action, the blown air does not remain in the air-conditioned room 20 for a long time, and the polluted air can be led to the suction port 6 quickly.

12 is a block diagram showing a configuration of a control device for an air conditioner according to Embodiment 2. FIG. In FIG. 12 , the control device 11 is composed of a room occupant position recognition section 62 , an airflow reaching area setting section 63 , a wind direction calculation section 64 , an air volume calculation section 65 and a wind direction and air volume support section 66 .

The occupant position recognition unit 62 acquires the position information of the occupants from the human detection means 10 by communication, and detects the positions of the suction port 6 and the plurality of outlets 7a, 7b, 7c, and 7d stored in advance. Recognize positional relationships.

The airflow reaching area setting unit 63 sets the airflow reaching area based on this positional relationship. The airflow reachable area is an area including all persons in the room and the point directly below the air inlet 6, like the airflow reachable area 51 or 52 described above.

The airflow direction calculator 64 is a part that sequentially determines the airflow directions of all the airflow outlets 7a to 7d. Specifically, as described above, the blowing direction of the blowing port 7a is set toward the intersection of the boundary of the airflow reaching region and the straight line connecting the suction port 6 and the blowing port 7a.

The airflow calculation unit 65 sets the airflow direction of each outlet set by the airflow direction calculation unit 64 so that the closer it is to directly below, the larger the wind direction, and the larger the horizontal component toward the suction port 6, the smaller the wind direction.

The wind direction/air volume instruction unit 66 controls the air direction adjustment unit 8 and the A control signal is transmitted to the trend adjustment unit 61 .

As described above, the air conditioner according to Embodiment 2 increases the air volume at the air outlets where the people in the room are near, and decreases the air volume at the air outlets where the people in the room are not near. The horizontal velocities of air blown from each outlet can be made uniform. By equalizing the velocities toward the suction ports, the time required for the blown air to reach the suction ports can be made substantially equal. As a result, contaminants emitted from people in the room can be led to the suction port without diffusing.

Embodiment 3.
FIG. 13 is an elevational view showing the configuration and installation situation of a ventilator according to Embodiment 3 of the present disclosure. The ventilator 71 incorporates an air supply fan 72 and an exhaust fan 74, and has an air supply port 72 and an exhaust port 75 on a surface that contacts the outside.

The outdoor air sucked from the air supply port 73 is distributed through the air supply duct 76 to a plurality of indoor air supply ports 77 arranged on the peripheral side of the ceiling surface of the air-conditioned room 20 . The outdoor air distributed to the indoor air supply port 77 is blown out toward the boundary of the airflow reaching region described above by the wind direction adjusting unit 78, and the wind direction is adjusted.

The outdoor air supplied to the air-conditioned room 20 reaches the indoor exhaust port 80 installed on the ceiling surface in the central part of the air-conditioned room 20 while mixing the thermal plume of the people in the room. The supplied outdoor air loses its supply speed at the boundary surface of the airflow arrival area, moves horizontally due to the upward flow of the thermal plume and the suction action of the indoor air outlet 80, and quickly reaches the indoor air outlet 80. sucked in. Therefore, the air in the air-conditioned room 20 can be kept clean without the contaminants contained in the thermal plume being agitated by the supplied air.

As described above, the ventilator according to Embodiment 3, when supplying clean outdoor air to the air-conditioned room 20 from the plurality of air supply ports 77, can so that it blows out toward the room and quickly moves to the indoor exhaust port. As a result, contaminants emitted from people in the room are not diffused into the air-conditioned room, and the room can always be kept clean.

In addition, the configuration shown in the above embodiment shows an example of the content of the present disclosure, and can be combined with another known technique. It is also possible to omit or change part of

1 air conditioner 2 outdoor unit 3, 103 indoor unit 4 liquid pipe 5 gas pipe 6 suction port 7, 7a, 7b, 7c, 7d outlet 8, 8a, 8b, 8c, 8d wind direction adjustment Part 9, 109 Duct 10 Person detection means 11 Control device 12 Compressor 13 Four-way valve 14 Outdoor heat exchanger 15 Outdoor fan 16 Expansion valve 17 Indoor heat exchanger 18 Indoor fan 20 Air conditioning Target room 31, 32, 33, 34, 35 People in room 41, 42, 43, 44, 45 Thermal plume 51, 52 Airflow arrival area 61, 61a, 61b, 61c, 61d Air volume adjustment unit 62 Room occupant position recognition unit 63 Airflow reaching area setting unit 64 Wind direction calculation unit 65 Air volume calculation unit 66 Wind direction/air volume indication unit 71 Ventilator 72 Air supply fan 73 Air supply port 74 Exhaust fan 75 Exhaust port , 76 air supply duct, 77 indoor air supply port, 78 wind direction adjusting unit, 79 exhaust duct, 80 indoor exhaust port

Claims (5)

an indoor unit comprising a suction port arranged on the ceiling surface of a space to be air-conditioned, and a removing means for removing contaminants contained in the air sucked from the suction port;
a plurality of outlets connected to the indoor unit by an air conveyance path and arranged at the edge of the air-conditioned space;
wind direction control means capable of adjusting the wind direction of the air blown out from the plurality of outlets from a direction directly below the outlets to a direction directly below the inlet;
occupant detection means for detecting the position of a occupant present in the air-conditioned space;
airflow reaching area setting means for setting an airflow reaching area so as to include the position of the person in the room and the position of the suction port;
a control device that adjusts the wind direction control means so that the wind direction of the air blown out from the plurality of outlets is directed to the boundary of the airflow reaching area;
Air conditioner with.
The airflow reaching area has a straight line connecting the suction port and one of the plurality of outlets as a first straight line, and is orthogonal to the first straight line. A polygon surrounded by a plurality of second straight lines set by all of the plurality of outlets, where a straight line passing through the position of the occupant closest to the outlet is defined as a second straight line,
The air conditioner according to claim 1.
2. The air conditioner according to claim 1, wherein the airflow reaching area is a convex hull formed from a point group including the position of the occupant and the position of the suction port.
Air volume adjustment means capable of adjusting the volume of air blown from each of the plurality of air outlets,
4. The control device according to any one of claims 1 to 3, wherein the control device determines the air volume of each of the plurality of air outlets based on the wind direction of each of the plurality of air outlets adjusted by the air direction control means, and controls the air volume adjustment means. The air conditioner according to .
an indoor exhaust port arranged on the ceiling surface of the space to be ventilated;
a plurality of indoor air supply ports arranged at the edge of the ventilation target space to supply outdoor air;
occupant detection means for detecting the position of a occupant existing in the ventilation target space;
a wind direction adjusting means capable of adjusting the wind direction of the air blown out from the plurality of indoor air supply ports from a direction directly below the indoor air supply ports to a direction directly below the indoor exhaust ports;
airflow reaching area setting means for setting an airflow reaching area so as to include the position of the person in the room and the position of the suction port;
a control device that adjusts the wind direction adjusting means so that the wind direction of the air blown out from the plurality of indoor air supply ports is directed to the boundary of the airflow reaching area;
Ventilation with.

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