JP2011174693A - Ceiling-mounted indoor unit for air conditioning device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively detect information in each blowing-out area in a ceiling-mounted indoor unit of an air conditioning device provided with a casing having a plurality of outlets, and a sensor for detecting the information in an air-conditioned room. <P>SOLUTION: This ceiling-mounted indoor unit 4 for the air conditioning device 1 is provided on a ceiling of the air-conditioned room, and has the casing 51 and a plurality of human detection sensors 62a-62d. The casing 51 has the plurality of outlets 56a-56d through which the conditioned air is blown into the air-conditioned room. The human detection sensors 62a-62d are provided in the casing 51 so as to be corresponding to each outlet 56a-56d, and detect the presence or absence of humans in the air-conditioned room. Detection areas A, B, C, D, one for each human detection sensor 62a-62d, are aligned with outlet areas A', B', C', D' to which the air current of the conditioned air blown out from the outlets 56a-56d reaches. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ceiling-mounted indoor unit of an air conditioner, and more particularly to a ceiling-mounted indoor unit of an air conditioner in which a casing is provided with a plurality of outlets and a sensor that detects information in an air-conditioning room.

  Conventionally, there is a ceiling-mounted indoor unit of an air conditioner described in Patent Document 1 (Japanese Patent Laid-Open No. 2007-32887). This ceiling-mounted indoor unit is provided with one floor temperature sensor at the corner of the decorative panel that detects the floor temperature in the air-conditioned room by rotating. In this ceiling-mounted indoor unit, the floor temperature sensor is rotated to detect a wide range of floor temperatures in the air-conditioned room.

  However, in the above conventional ceiling-mounted indoor unit, since the floor temperature sensor is rotated and detected, the detection area of the floor temperature sensor matches the outlet area to which the airflow of conditioned air blown from each outlet reaches. The floor temperature cannot be detected at the same time. For this reason, in the conventional ceiling-mounted indoor unit, it is difficult to effectively detect information (here, floor temperature) of each blowing area.

  An object of the present invention is to effectively detect information in each outlet area in a ceiling-mounted indoor unit of an air conditioner in which a casing is provided with a plurality of outlets and sensors for detecting information in an air-conditioning room. There is to do.

  A ceiling-mounted indoor unit of an air conditioner according to a first aspect is provided on a ceiling of an air conditioning room, and includes a casing and a plurality of area sensors. The casing has a plurality of outlets for blowing conditioned air into the conditioned room. The plurality of area sensors are provided in the casing so as to correspond to the respective outlets, and detect information in the air conditioning room. And the detection area of each area sensor is match | combined with the blowing area where the airflow of the conditioned air which blows off from each blower outlet arrives.

  In this ceiling-mounted indoor unit, information in each blowing area can be detected at the same time in a state where the detection area is matched with each blowing area, so that information on each blowing area can be detected effectively.

  The ceiling-mounted indoor unit of the air conditioner according to the second aspect is the ceiling-mounted indoor unit of the air conditioner according to the first aspect, in which the plurality of area sensors are combined into one of the corners of the casing. Has been placed.

  In this ceiling-mounted indoor unit, the wiring of a plurality of area sensors can be collected in one place, so that wiring work and the like can be easily performed.

  The ceiling-mounted indoor unit of the air conditioner according to the third aspect is the ceiling-mounted indoor unit of the air conditioner according to the second aspect, wherein the lower surface of the casing has a substantially polygonal shape in plan view. The plurality of air outlets are formed on the lower surface of the casing along the polygonal sides of the lower surface of the casing. The plurality of area sensors are arranged on the outer peripheral side of the blower outlet forming area surrounded by a line connecting the outer peripheral edge of each blower outlet in plan view and the outer peripheral edge of the adjacent blower outlet in plan view across the corner of the lower surface of the casing. Has been placed.

  In this ceiling-mounted indoor unit, the area sensor is less affected by the temperature of the conditioned air that is blown from the air outlet than when the area sensor is arranged in the air outlet formation area. Can be suppressed.

  A ceiling-mounted indoor unit of an air conditioner according to a fourth aspect is the ceiling-mounted indoor unit of an air conditioner according to any of the first to third aspects, wherein a plurality of area sensors are installed in the air-conditioned room. It is a person detection sensor which detects the presence or absence of presence.

  In this ceiling-mounted indoor unit, since the presence / absence of a person in each blowing area can be detected simultaneously, the presence / absence of a person in each blowing area can be accurately detected.

  The ceiling-mounted indoor unit of the air conditioner according to the fifth aspect is the ceiling-mounted indoor unit of the air conditioner according to the fourth aspect, wherein the casing has a floor temperature for detecting the temperature of the floor surface in the air-conditioned room. A sensor is further provided.

  In this ceiling-mounted indoor unit, since a floor temperature sensor is provided in addition to the human detection sensor, operation control using both sensors can be performed.

  The ceiling-mounted indoor unit of the air conditioner according to the sixth aspect is the ceiling-mounted indoor unit of the air conditioner according to the fifth aspect, wherein the floor temperature sensor is the lower surface of the casing provided with the human detection sensor. It is arranged at the corner.

  In this ceiling-mounted indoor unit, wiring of not only a plurality of area sensors but also floor temperature sensors can be integrated into one place, so that wiring work and the like can be easily performed.

  A ceiling-mounted indoor unit of an air conditioner according to a seventh aspect is the ceiling-mounted indoor unit of an air conditioner according to any of the fourth to sixth aspects. There are provided a plurality of wind direction changing blades capable of independently changing the vertical air direction angle of the conditioned air blown from the air. And based on the presence or absence of the person in each blowing area detected by each person detection sensor, control which sets the wind direction angle of the wind direction change blade | wing corresponding to each blowing area is performed.

  In this ceiling-mounted indoor unit, the setting of the direction of the conditioned air blown out from each outlet can be controlled independently based on the distribution of people in the air-conditioned room. It is possible to improve the performance.

  The ceiling-mounted indoor unit of the air conditioner according to the eighth aspect is the ceiling-mounted indoor unit of the air conditioner according to the seventh aspect, wherein each person detection sensor detects the presence of a person in each outlet area The control is performed to set the wind direction angle of the wind direction changing blade corresponding to the blowing area where the presence of a person is detected among the plurality of wind direction changing blades to the horizontal blowing direction that is the wind direction angle at which the conditioned air blows out in the horizontal direction. . Here, the “horizontal wind direction” means a setting that makes the wind direction angle closest to the horizontal direction within the changeable range of the wind direction angle of the wind direction changing blade. In addition, the “changeable range” means a range in the case where there is any restriction on the changeable range of the wind direction angle of the wind direction changing blade. For this reason, when the wind direction angle of the wind direction changing blade is restricted so as not to be set to the wind direction setting closest to the horizontal direction in order to prevent, for example, dirt on the ceiling surface in the air conditioning room (that is, most) If the changeable range of the wind direction angle is limited between the wind direction setting that is lower than the wind direction setting that is closest to the horizontal direction and the wind direction setting that is the most downward direction), the wind direction that is lower than the wind direction setting that is closest to the horizontal direction The setting is “Horizontal wind direction”.

  In this ceiling-mounted indoor unit, for the blowing area where the presence of a person is detected, control is performed to set the wind direction angle of the corresponding wind direction changing blade to the horizontal blowing direction. Therefore, depending on the draft of the person existing in each blowing area Uncomfortable feeling can be suppressed, and thereby the comfort of the person in the air-conditioned room can be improved.

  The ceiling-mounted indoor unit of the air conditioner according to the ninth aspect is the ceiling-mounted indoor unit of the air conditioner according to the eighth aspect. In the heating operation, each person detection sensor When the presence is detected and the temperature difference between the upper part and the lower part in the air-conditioning room is equal to or greater than the predetermined temperature difference, the wind direction change corresponding to the blowing area where the absence of a person is detected among the plurality of wind direction change blades Control is performed so that the airflow direction angle of the blades is set to a direct airflow direction, which is the airflow direction angle at which the conditioned air is blown down most. Here, “directly blowing wind direction” means a setting that is the most downward wind direction angle in the changeable range of the wind direction angle of the wind direction changing blade.

  As in the ceiling-mounted indoor unit according to the eighth aspect described above, when only the control for setting the wind direction angle of the wind direction changing blade corresponding to the blowing area where the presence of a person is detected to the horizontal blowing direction is performed, the air conditioning room Temperature unevenness is likely to occur between the upper part and the lower part. For this reason, it is preferable to suppress the occurrence of temperature unevenness between the upper part and the lower part in the air-conditioned room while suppressing the discomfort caused by the draft of the person existing in each blowout area.

  Therefore, in this ceiling-mounted indoor unit, in the heating operation, if the temperature difference between the upper part and the lower part in the air-conditioned room is a predetermined temperature difference or more, it is determined that the temperature unevenness in the air-conditioned room has occurred, Control is performed to set the wind direction angle of the wind direction changing blade corresponding to the blowing area where the absence of a person is detected to a direct blowing wind direction so that the warm air reaches the vicinity of the floor in the air-conditioned room. Thereby, in heating operation, it is possible to suppress the occurrence of temperature unevenness between the upper part and the lower part in the air-conditioned room while suppressing the discomfort caused by the draft of the person existing in each blowout area.

  The ceiling-mounted indoor unit of the air conditioner according to the tenth aspect is the ceiling-mounted indoor unit of the air conditioner according to the eighth or ninth aspect. In the cooling operation, each human detection sensor is in each outlet area. When the presence of a person is detected and the temperature difference between the upper part and the lower part in the air-conditioning room is greater than or equal to the specified temperature difference, it corresponds to the blowout area where the absence of a person is detected among the multiple wind direction change blades Control is performed to set the wind direction angle of the wind direction changing blade to be lower than the horizontal blowing direction.

  As in the ceiling-mounted indoor unit according to the eighth aspect described above, when only the control for setting the wind direction angle of the wind direction changing blade corresponding to the blowing area where the presence of a person is detected to the horizontal blowing direction is performed, the air conditioning room Temperature unevenness is likely to occur between the upper part and the lower part. For this reason, it is preferable to suppress the occurrence of temperature unevenness between the upper part and the lower part in the air-conditioned room while suppressing the discomfort caused by the draft of the person existing in each blowout area.

  Therefore, in this ceiling-mounted indoor unit, in the cooling operation, when the temperature difference between the upper part and the lower part in the air-conditioned room is a predetermined temperature difference or more, it is determined that the temperature unevenness in the air-conditioned room has occurred, Perform control to set the wind direction angle of the wind direction change blade corresponding to the blowout area where the absence of a person is detected to be lower than the horizontal blown wind direction so that the cold air reaches near the floor in the air conditioning room Yes. Thereby, in the cooling operation, it is possible to suppress the occurrence of temperature unevenness between the upper part and the lower part in the air-conditioning room while suppressing the discomfort caused by the draft of the person existing in each blowing area.

  The ceiling-mounted indoor unit of the air conditioner according to the eleventh aspect is the ceiling-mounted indoor unit of the air conditioner according to the third aspect, in which a corner outlet is formed at a corner of the lower surface of the casing. ing. The casing has a corner blowout portion that forms a corner blowout passage that guides conditioned air from the inside to the corner blowout. The area sensor is provided so as to protrude from the lower surface of the casing in the vicinity of the corner outlet. The corner blowout part has a sensor vicinity near the area sensor and a sensor remote part adjacent to the sensor vicinity. The surface that forms the corner outlet channel near the sensor is closer to the vertical plane than the surface that forms the corner outlet channel near the sensor.

  When the corner air outlet is formed at the corner of the lower surface of the casing and the area sensor is provided so as to protrude from the lower surface of the casing in the vicinity of the corner air outlet, the area sensor is blown from the corner air outlet. The conditioned air is easily collided. As a result, the area sensor may be affected by the temperature of the conditioned air that is blown from the outlet, and the detection accuracy of the area sensor may decrease, or condensation may occur in the area sensor.

  Therefore, in this ceiling-mounted indoor unit, as described above, the surface that forms the corner outlet channel near the sensor near the area sensor is used, and the corner outlet channel that is located near the sensor near the sensor outlet portion. The shape is closer to the vertical plane than the plane of construction. As a result, the conditioned air blown from the sensor vicinity of the corner blower outlet is blown downward, making it difficult to collide with the area sensor and reducing the detection accuracy of the area sensor and the condensation of the area sensor. Can do.

  As described above, according to the present invention, the following effects can be obtained.

  In the ceiling-mounted indoor unit of the air conditioner according to the first aspect, since the information in each blowing area can be detected at the same time in a state where the detection area is matched to each blowing area, Information can be detected.

  In the ceiling-mounted indoor unit of the air conditioner according to the second aspect, the wiring of a plurality of area sensors can be collected in one place, so that wiring work and the like can be easily performed.

  In the ceiling-mounted indoor unit of the air conditioner according to the third aspect, the area sensor is less affected by the conditioned air blown from the air outlet than when the area sensor is arranged in the air outlet forming area. Therefore, a decrease in detection accuracy of the area sensor can be suppressed.

  In the ceiling-mounted indoor unit of the air conditioner according to the fourth aspect, since the presence / absence of a person in each blowing area can be detected simultaneously, the presence / absence of a person in each blowing area can be accurately detected. Can do.

  In the ceiling-mounted indoor unit of the air conditioner according to the fifth aspect, since the floor temperature sensor is provided in addition to the human detection sensor, operation control using both sensors can be performed.

  In the ceiling-mounted indoor unit of the air conditioner according to the sixth aspect, the wiring of not only the plurality of area sensors but also the floor temperature sensor can be integrated into one place, so that wiring work and the like can be easily performed.

  In the ceiling-mounted indoor unit of the air conditioner according to the seventh aspect, the air direction setting of the conditioned air blown out from each outlet can be independently controlled based on the distribution of people in the air conditioned room. Thus, it is possible to improve the comfort of people in the air-conditioned room.

  In the ceiling-mounted indoor unit of the air conditioner according to the eighth aspect, it is possible to suppress discomfort caused by a draft of a person existing in each blowing area, thereby improving the comfort of the person in the air-conditioned room. be able to.

  In the ceiling-mounted indoor unit of the air conditioner according to the ninth aspect, in the heating operation, temperature unevenness is generated between the upper part and the lower part in the air-conditioning room while suppressing discomfort caused by the draft of a person existing in each blowing area. It can be suppressed from occurring.

  In the ceiling-mounted indoor unit of the air conditioner according to the tenth aspect, in cooling operation, temperature unevenness is generated between the upper part and the lower part in the air-conditioning room while suppressing discomfort caused by a person's draft existing in each blowing area. It can be suppressed from occurring.

  In the ceiling-mounted indoor unit of the air conditioner according to the eleventh aspect, the conditioned air blown from the sensor vicinity of the corner blower outlet is blown downward, so that it does not easily collide with the area sensor. Decrease in detection accuracy and condensation of the area sensor can be made difficult to occur.

It is a schematic block diagram of the air conditioning apparatus by which the ceiling installation type indoor unit concerning 1st and 2nd embodiment of this invention was employ | adopted. 1 is an external perspective view of a ceiling-mounted indoor unit according to a first embodiment of the present invention. FIG. 5 is a schematic side cross-sectional view of the ceiling-mounted indoor unit according to the first embodiment of the present invention, and is a cross-sectional view taken along the line I-O-I of FIG. 4. It is a schematic plan view which shows the state which removed the top plate of the ceiling-mounted indoor unit concerning 1st Embodiment of this invention. It is the top view which looked at the decorative panel of the ceiling installation type indoor unit concerning 1st Embodiment of this invention from the air conditioned room. The model which shows the blowing area to which the airflow of the air-conditioning air blown from each blower outlet of the ceiling installation type indoor unit concerning 1st and 2nd embodiment of this invention arrives, and the detection area in planar view of each person detection sensor FIG. It is a schematic diagram which shows the detection area of each person detection sensor in the side view of the ceiling-mounted indoor unit concerning 1st and 2nd embodiment of this invention. FIG. 6 is a schematic diagram illustrating the human detection sensor assembly provided in the ceiling-mounted indoor unit according to the first embodiment of the present invention in a state where each human detection sensor is visible, and is an enlarged view of FIG. 5. It is a control block diagram of the ceiling-mounted indoor unit according to the first and second embodiments of the present invention. It is a figure which shows the wind direction change range of the wind direction change blade | wing of the ceiling installation type indoor unit concerning 1st and 2nd embodiment of this invention. It is a flowchart which shows the control regarding the wind direction setting using the human detection sensor of the ceiling installation type indoor unit concerning 1st and 2nd embodiment of this invention. It is an external appearance perspective view of the ceiling-mounted indoor unit concerning 2nd Embodiment of this invention. FIG. 15 is a schematic cross-sectional side view of a ceiling-mounted indoor unit according to a second embodiment of the present invention, which is a cross-sectional view taken along the line I-O-I of FIG. 14. It is a schematic plan view which shows the state which removed the top plate of the ceiling installation type indoor unit concerning 2nd Embodiment of this invention. It is the top view which looked at the decorative panel of the ceiling installation type indoor unit concerning 2nd Embodiment of this invention from the air conditioned room. FIG. 16 is a schematic diagram illustrating the human detection sensor assembly provided in the ceiling-mounted indoor unit according to the second embodiment of the present invention in a state where each human detection sensor is visible, and is an enlarged view of FIG. 15. It is a schematic sectional drawing which shows the corner | angular part outlet vicinity provided with the human detection sensor assembly | assembly of the ceiling-mounted indoor unit concerning 2nd Embodiment of this invention, Comprising: It is a figure which shows a sensor vicinity part. It is a schematic sectional drawing which shows the corner | angular part outlet vicinity provided with the human detection sensor assembly | assembly of the ceiling-mounted indoor unit concerning 2nd Embodiment of this invention, Comprising: It is a figure which shows a sensor far part. It is a schematic perspective view which shows the corner | angular part outlet vicinity provided with the human detection sensor assembly | assembly of the ceiling installation type indoor unit concerning 2nd Embodiment of this invention, Comprising: It is a figure which shows a sensor vicinity part and a sensor far part. .

  An embodiment of a ceiling-mounted indoor unit according to the present invention will be described with reference to the drawings.

[First Embodiment]
<Configuration>
-Overall-
FIG. 1 is a schematic configuration diagram of an air conditioner 1 in which a ceiling-mounted indoor unit 4 according to a first embodiment of the present invention is employed. The air conditioner 1 is a split-type air conditioner, and mainly includes an outdoor unit 2, a ceiling-mounted indoor unit 4, a liquid refrigerant communication pipe 5 that connects the outdoor unit 2 and the ceiling-mounted indoor unit 4, and The gas refrigerant communication pipe 6 is included, and a vapor compression refrigerant circuit 10 is configured.

-Outdoor unit-
The outdoor unit 2 is installed outdoors, and mainly includes a compressor 21, a four-way switching valve 22, an outdoor heat exchanger 23, an expansion valve 24, a liquid side shut-off valve 25, and a gas side shut-off valve. 26.

  The compressor 21 is a mechanism that sucks low-pressure gas refrigerant and discharges it after compressing it into a high-pressure gas refrigerant. Here, as the compressor 21, a volumetric compression element (not shown) such as a rotary type or a scroll type accommodated in a casing (not shown) is used by a compressor motor 21a also accommodated in the casing. A driven hermetic compressor is employed. The compressor motor 21a can change the rotation speed (namely, operating frequency) with an inverter apparatus (not shown), and the capacity | capacitance control of the compressor 21 is attained by this.

  The four-way switching valve 22 is a valve for switching the direction of the refrigerant flow when switching between the cooling operation and the heating operation. The four-way switching valve 22 can connect the discharge side of the compressor 21 and the gas side of the outdoor heat exchanger 23 and can connect the gas side closing valve 26 and the suction side of the compressor 21 during cooling operation. (Refer to the solid line of the four-way switching valve 22 in FIG. 1). In addition, the four-way switching valve 22 connects the discharge side of the compressor 21 and the gas side shut-off valve 26 and connects the gas side of the outdoor heat exchanger 23 and the suction side of the compressor 21 during heating operation. (Refer to the broken line of the four-way switching valve 22 in FIG. 1).

  The outdoor heat exchanger 23 is a heat exchanger that functions as a refrigerant radiator during cooling operation and functions as a refrigerant evaporator during heating operation. The outdoor heat exchanger 23 has a liquid side connected to the expansion valve 24 and a gas side connected to the four-way switching valve 22.

  The expansion valve 24 decompresses the high-pressure liquid refrigerant radiated in the outdoor heat exchanger 23 during the cooling operation before sending it to the indoor heat exchanger 42 (described later), and the high-pressure liquid radiated in the indoor heat exchanger 42 during the heating operation. This is an electric expansion valve capable of reducing the pressure before sending the refrigerant to the outdoor heat exchanger 23.

  The liquid side shutoff valve 25 and the gas side shutoff valve 26 are valves provided at connection ports with external devices and pipes (specifically, the liquid refrigerant communication pipe 5 and the gas refrigerant communication pipe 6). The liquid side closing valve 25 is connected to the expansion valve 24. The gas side closing valve 26 is connected to the four-way switching valve 22.

  The outdoor unit 2 is provided with an outdoor fan 27 for sucking outdoor air into the unit, supplying the outdoor air to the outdoor heat exchanger 23, and then discharging the air outside the unit. That is, the outdoor heat exchanger 23 is a heat exchanger that radiates and evaporates the refrigerant using outdoor air as a cooling source or a heating source. Here, as the outdoor fan 27, a propeller fan driven by an outdoor fan motor 27a is employed. The outdoor fan motor 27a can vary the rotation speed (that is, the operating frequency) by an inverter device (not shown), thereby enabling the air volume control of the outdoor fan 27.

  The outdoor unit 2 also has an outdoor control unit 39 that controls the operation of each part constituting the outdoor unit 2. The outdoor control unit 39 includes a microcomputer, a memory, and the like for controlling the outdoor unit 2, and transmits control signals and the like with the indoor control unit 69 (described later) of the ceiling-mounted indoor unit 4. You can communicate.

−Liquid refrigerant connection tube−
The liquid refrigerant communication pipe 5 is a refrigerant pipe connected to the liquid side closing valve 25. The liquid refrigerant communication tube 5 is a refrigerant tube capable of leading the refrigerant out of the outdoor unit 2 from the outlet of the outdoor heat exchanger 23 that functions as a refrigerant radiator during cooling operation. The liquid refrigerant communication pipe 5 is also a refrigerant pipe capable of introducing a refrigerant from the outside of the outdoor unit 2 to the inlet of the outdoor heat exchanger 23 that functions as a refrigerant evaporator during heating operation.

-Gas refrigerant communication tube-
The gas refrigerant communication pipe 6 is a refrigerant pipe connected to the gas side closing valve 26. The gas refrigerant communication tube 6 is a refrigerant tube capable of introducing a refrigerant from outside the outdoor unit 2 to the suction of the compressor 21 during the cooling operation. The gas refrigerant communication pipe 6 is also a refrigerant pipe capable of leading the refrigerant out of the outdoor unit 2 from the discharge of the compressor 21 during heating operation.

−Ceiling-mounted indoor unit−
Here, the ceiling-mounted indoor unit 4 employs a type of ceiling-mounted air conditioner called a ceiling-embedded type. As shown in FIGS. 2 to 5, the ceiling-mounted indoor unit 4 has a casing 51 that houses various components therein. The casing 51 is composed of a casing body 51a and a decorative panel 52 disposed on the lower side of the casing body 51a. As shown in FIG. 2, the casing main body 51 a is arranged by being inserted into an opening formed in the ceiling U of the air conditioning room. And the decorative panel 52 is arrange | positioned so that it may fit in opening of the ceiling U. FIG. Here, FIG. 2 is an external perspective view of the ceiling-mounted indoor unit 4. FIG. 3 is a schematic side cross-sectional view of the ceiling-mounted indoor unit 4 and is a cross-sectional view taken along the line I-O-I of FIG. 4. FIG. 4 is a schematic plan view showing a state where the top plate 53 of the ceiling-mounted indoor unit 4 is removed. FIG. 5 is a plan view of the decorative panel 52 of the ceiling-mounted indoor unit 4 as viewed from the air-conditioned room.

  The casing body 51a is a substantially octagonal box-like body in which long sides and short sides are alternately formed in a plan view, and the lower surface thereof is open. The casing body 51 a includes a substantially octagonal top plate 53 in which long sides and short sides are alternately and continuously formed, and a side plate 54 extending downward from the peripheral edge of the top plate 53. The side plate 54 includes side plates 54 a, 54 b, 54 c, 54 d corresponding to the long sides of the top plate 53, and side plates 54 e, 54 f, 54 g, 54 h corresponding to the short sides of the top plate 53. The side plate 54h constitutes a portion through which the indoor refrigerant pipes 43 and 44 for connecting the indoor heat exchanger 42 and the refrigerant communication pipes 5 and 6 penetrate.

  The decorative panel 52 is a plate-like body having a substantially polygonal shape (here, substantially rectangular shape) in plan view constituting the lower surface of the casing 51, and is mainly a panel body fixed to the lower end portion of the casing body 51a. 52a. The panel main body 52a has a suction port 55 for sucking air in the air-conditioned room at substantially the center thereof, and a blow-out port 56 for blowing air-conditioned air into the air-conditioned room formed so as to surround the suction port 55 in plan view. ing. The suction port 55 is a substantially quadrangular opening. The suction port 55 is provided with a suction grill 57 and a suction filter 58 for removing dust in the air sucked from the suction port 55. The air outlet 56 has a plurality (four in this case) of side air outlets 56a, 56b, 56c, and 56d that are formed along each side of the quadrangular shape of the panel main body 52a. Here, an area in which air conditioning is performed by the arrival of an airflow of conditioned air (see arrow X1 in FIG. 5) mainly blown from the side air outlet 56a is referred to as a blowout area A ′ (see FIG. 6). Further, an area in which air conditioning is performed by the arrival of an airflow of conditioned air (see arrow X2 in FIG. 5) mainly blown from the side blowout port 56b is defined as a blowout area B ′ (see FIG. 6). Further, an area in which air conditioning is performed by the arrival of an airflow of conditioned air (see arrow X3 in FIG. 5) mainly blown from the side air outlet 56c is defined as a blowout area C ′ (see FIG. 6). Further, an area in which air conditioning is performed by the arrival of an airflow of conditioned air blown mainly from the side air outlet 56d (see arrow X4 in FIG. 5) is defined as a blowout area D ′ (see FIG. 6).

  In each of the side air outlets 56a, 56b, 56c, and 56d, a plurality (in this case, 4) that can change the vertical direction angle of the conditioned air blown out from each side air outlet into the air conditioned room. Wind direction changing blades 71a, 71b, 71c, 71d. The wind direction changing blades 71a, 71b, 71c, 71d are plate-like members that are elongated along the longitudinal direction of the side air outlets 56a, 56b, 56c, 56d. Both ends in the longitudinal direction of each of the wind direction changing blades 71a, 71b, 71c, 71d are supported by the decorative panel 52 so as to be rotatable around an axis in the longitudinal direction. And each wind direction change blade | wing 71a, 71b, 71c, 71d is driven by blade drive motor 74a, 74b, 74c, 74d. Thereby, the wind direction change blades 71a, 71b, 71c, 71d can change the wind direction angle in the vertical direction independently.

  Inside the casing body 51a, an indoor fan 41 and an indoor heat exchanger 42 are mainly arranged. The indoor fan 41 allows air in the air-conditioned room to enter the casing body 51a through the suction port 55 of the decorative panel 52. This is a centrifugal blower that inhales and blows out from the inside of the casing body 51 a through the blowout port 56 of the decorative panel 52. The indoor heat exchanger 42 is a heat exchanger that functions as a refrigerant evaporator during the cooling operation and functions as a refrigerant radiator during the heating operation. The outdoor heat exchanger 42 is connected to the refrigerant communication tubes 5 and 6 (see FIG. 1) via indoor refrigerant tubes 43 and 44. The indoor fan 41 has an indoor fan motor 41a provided at the center of the top plate 53 of the casing body 51a, and an impeller 41b that is connected to the indoor fan motor 41a and is driven to rotate. The impeller 41b is an impeller having turbo blades. Air can be sucked into the impeller 41b from below and blown out toward the outer peripheral side of the impeller 41b in plan view. The indoor fan motor 41a can vary the rotation speed (that is, the operating frequency) by an inverter device (not shown), thereby enabling the air volume control of the indoor fan 41.

  The indoor heat exchanger 42 is a finned tube heat exchanger that is bent and arranged so as to surround the periphery of the indoor fan 41 in plan view. The indoor heat exchanger 42 performs heat exchange between the air in the air-conditioned room sucked into the casing body 51a and the refrigerant, cools the air in the air-conditioned room during the cooling operation, and cools the air in the air-conditioned room during the heating operation. It can be heated.

  A drain pan 45 for receiving drain water generated by condensation of moisture in the air by the indoor heat exchanger 42 is disposed below the indoor heat exchanger 42. The drain pan 45 is attached to the lower part of the casing body 51a. The drain pan 45 is formed with blow holes 45a, 45b, 45c, 45d, a suction hole 45j, and a drain water receiving groove 45i. The blowout holes 45a, 45b, 45c, and 45d are holes formed so as to communicate with the blowout port 56 (more specifically, the side blowout ports 56a, 56b, 56c, and 56d) of the decorative panel 52. The suction hole 45j is a hole formed so as to communicate with the suction port 55 of the decorative panel 52. The decorative panel 52 is provided with a panel heat insulating material 59 interposed between the drain pan 45 and the panel body 52a in the vertical direction. Panel blowout holes 59a, 59b, 59c, and 59d are formed in the panel heat insulating material 59 so that the blowout holes 45a, 45b, 45c, and 45d communicate with the side blowout openings 56a, 56b, 56c, and 56d. Further, the panel heat insulating material 59 is formed with a panel suction hole 59j that allows the suction hole 45j and the suction hole 55 to communicate with each other. Side blow channels 60a, 60b, 60c, and 60d are formed by the blow holes 45a, 45b, 45c, and 45d and the panel blow holes 59a, 59b, 59c, and 59d. A suction flow path 60j is formed by the suction hole 45j and the panel suction hole 59j. That is, the peripheral edge portions of the blowout holes 45a, 45b, 45c, and 45d of the drain pan 45 and the peripheral edge portions of the panel blowout holes 59a, 59b, 59c, and 59d of the panel heat insulating material 59 are conditioned air from the inside of the casing body 51a. Side blowout portions 80a, 80b, 80c, and 80d that form side blowout flow paths 60a, 60b, 60c, and 60d leading to the blowout ports 56a, 56b, 56c, and 56d are configured. Further, the peripheral portion of the suction hole 45j of the drain pan 45 and the peripheral portion of the panel suction hole 59j of the panel heat insulating material 59 form a suction passage 60j that guides conditioned air from the suction port 55 to the inside of the casing body 51a. 80j is configured. The drain water receiving groove 45 i is a groove formed to face the lower end of the indoor heat exchanger 42. A bell mouth 41 c for guiding air sucked from the suction port 55 to the impeller 41 b of the indoor fan 41 is disposed in the suction hole 45 j of the drain pan 45.

  The ceiling-mounted indoor unit 4 is provided with various sensors. Specifically, the ceiling-mounted indoor unit 4 is provided with an intake air temperature sensor 61, a human detection sensor assembly 62, and a floor temperature sensor 63.

  The intake air temperature sensor 61 is a temperature sensor that detects an intake air temperature Tr that is the temperature of the air in the air-conditioned room that is sucked into the casing body 51 a through the suction port 55. Here, the intake air temperature sensor 61 is provided at the intake port 55.

  The human detection sensor assembly 62 detects a plurality of people (here, the presence or absence of people in the blowout areas A ′, B ′, C ′, D ′) as information in the air conditioning room. Then, it is an aggregate of human detection sensors 62a, 62b, 62c and 62d as four area sensors. Each person detection sensor 62a, 62b, 62c, 62d is provided in the position where the lower part of the decorative panel 52 can be arrange | positioned so as to correspond to each edge part outlet 56a, 56b, 56c, 56d. Then, the detection areas A, B, C, and D in the plan view of the individual detection sensors 62a, 62b, 62c, and 62d are aligned with the blowing areas A ′, B ′, C ′, and D ′ as shown in FIG. It has been. Here, the detection areas A, B, C, and D are areas in which the detection angles α, β, γ, and δ are about 90 degrees. Moreover, the human detection sensors 62a, 62b, 62c, and 62d are arranged so that the detection areas A, B, C, and D do not overlap each other. Further, as shown in FIG. 7, the detection areas A, B, C, and D in the side view of the individual detection sensors 62a, 62b, 62c, and 62d are any blowing areas A ′, B ′, C ′, and D ′. In the case where the presence / absence of a person is detected, the area is such that each detection angle ε is about 135 degrees. Each of the person detection sensors 62a, 62b, 62c, and 62d is an infrared sensor that detects the presence or absence of a person in the air-conditioned room based on a change in infrared radiation energy emitted from the object. As shown in FIG. 8, the human detection sensors 62a, 62b, 62c, and 62d are formed at one of the corners of the decorative panel 52 (here, the side where the side air outlet 56a is formed and the side air outlet 56b are formed. Corners sandwiched between the two sides) to form a human detection sensor assembly 62. Here, the infrared light receiving element of the human detection sensor 62a is provided so as to face the side air outlet 56a side and obliquely downward, and thereby, the detection area A matching the blowout area A ′. Can be obtained. In addition, the infrared light receiving element of the human detection sensor 62b is provided so as to face the side air outlet 56b side and obliquely downward, whereby a detection area B that matches the blowout area B ′ is provided. It has come to be obtained. In addition, the infrared light receiving element of the human detection sensor 62c is provided so as to face the side air outlet 56c side and obliquely downward, so that the detection area C matching the blowout area C ′ is provided. It has come to be obtained. Further, the infrared light receiving element of the human detection sensor 62d is provided so as to face the side air outlet 56d side and obliquely downward, whereby a detection area D matching the blowout area D ′ is provided. It has come to be obtained. As described above, the infrared light receiving elements of the human detection sensors 62a, 62b, 62c, and 62d are arranged so that the detection areas A, B, C, and D do not overlap each other. The human detection sensors 62a, 62b, 62c, and 62d are covered with a substantially hemispherical cover member 62e made of a material that transmits infrared rays (see FIG. 2). The cover member 62a is provided so as to protrude downward from the lower surface of the decorative panel 52. In addition, the human detection sensor assembly 62 (that is, the human detection sensors 62a, 62b, 62c, and 62d) includes the outer peripheral edge and the corners of the lower surface of the decorative panel 52 in the plan view of the side air outlets 56a, 56b, 56c, and 56d. It arrange | positions at the outer peripheral side of the blower outlet formation area 76 enclosed by the line | wire 75 which connects the outer peripheral edge in planar view of the side part blower outlets 56a, 56b, 56c, and 56d adjacent on both sides. Here, the blower outlet formation area 76 is arrange | positioned at the inner peripheral side of the area enclosed by the side plates 54a, 54b, 54c, 54d, 54e, 54f, 54g, 54h which form the casing main body 51a. For this reason, the human detection sensor assembly 62 is disposed on the outer peripheral side of the area surrounded by the side plates 54a, 54b, 54c, 54d, 54e, 54f, 54g, and 54h.

  The floor temperature sensor 63 is an infrared sensor that detects the temperature Tf of the floor surface in the air-conditioned room. Here, one floor temperature sensor 63 is provided at a position where the floor panel 63 can be disposed below the decorative panel 52. Here, the floor temperature sensor 63 is disposed at the corner of the decorative panel 52. More specifically, the floor temperature sensor 63, like the human detection sensor assembly 62, is one of the corners of the decorative panel 52 (here, the side air outlet 56a is formed) as shown in FIG. The corner is sandwiched between the side and the side where the side air outlet 56b is formed so as to face downward from the lower surface of the decorative panel 52. The floor temperature sensor 63 detects the temperature Tf of the floor surface in the air-conditioned room based on the infrared radiation energy radiated from the object.

  Moreover, the ceiling-mounted indoor unit 4 has an indoor control unit 69 that controls the operation of each unit constituting the ceiling-mounted indoor unit 4. The indoor control unit 69 includes a microcomputer and a memory for controlling the ceiling-mounted indoor unit 4, and exchanges control signals and the like with the outdoor control unit 39 of the outdoor unit 2. Be able to.

  And the outdoor control part 39 and the indoor control part 69 comprise the control part 9 which performs operation control etc. of the air conditioning apparatus 1 (refer FIG. 1). In addition, the person who exists in an air conditioned room can perform a request | requirement of an operation | movement, a stop, etc. with respect to the control part 9 by the remote controller 99 (refer FIG. 1).

-Control unit-
As shown in FIG. 9, the control unit 9 mainly includes a control unit 91 and a storage unit 92. Here, the control means 91 means the microcomputer of the outdoor control unit 39, the microcomputer of the indoor control unit 69, and the like, and controls the operation of each part constituting the outdoor unit 2 and the ceiling-mounted indoor unit 4. Control. A remote controller 99 and various sensors 61, 62a, 62b, 62c, 62d, and 63 are connected to the control unit 9. And the control part 9 is based on the request | requirement from the remote controller 99, the detection value of various sensors 61, 62a, 62b, 62c, 62d, 63, etc. Various apparatus 21a, 22, 24, 27a, 41a, 74a, 74b. 74c and 74d are controlled.

  Here, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is fixed based on a request from the remote controller 99, detection values of the various sensors 61, 62a, 62b, 62c, 62d, 63, and the like. It can be set to a state or a swing state. The fixed state is a state in which each blade driving motor 74a, 74b, 74c, 74d is driven and the wind direction angle of each wind direction changing blade 71a, 71b, 71c, 71d is fixed at a desired wind direction angle. As shown in FIG. 10, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is the wind direction P0 (horizontal blown wind direction) that is the wind direction angle at which the conditioned air blows out horizontally, and the conditioned air blows out downward. It can be changed in a plurality of stages between the wind direction P4 (directly blowing wind direction) which is the wind direction angle. Here, the wind direction angles of the respective wind direction changing blades 71a, 71b, 71c, 71d are the wind direction P0, the wind direction P1 that is lower than the wind direction P0, the wind direction P2 that is lower than the wind direction P1, the wind direction P3 that is lower than the wind direction P2, and , And can be changed to five levels of the most downward wind direction P4. For this reason, the wind direction P0 is a wind direction angle closest to the horizontal direction in the wind direction change ranges of the respective wind direction change blades 71a, 71b, 71c, 71d. In the swing state, each blade drive motor 74a, 74b, 74c, 74d is driven, and the wind direction angle of each wind direction change blade 71a, 71b, 71c, 71d is within the wind direction change range (here, wind direction P0 and wind direction P4). In this state, it is repeatedly changed up and down. As described above, “wind direction angle” and “wind direction setting” mean a state where the wind direction angle is fixed to a certain angle when the wind direction angle is fixed to a certain angle. In addition, when an operation such as swinging the wind direction changing blades 71a, 71b, 71c, and 71d is involved, the state in which the operation is performed also means “wind direction angle” and “wind direction setting”. That is, “wind direction angle” and “wind direction setting” mean the state of the wind direction angle of the wind direction changing blades including the operation of the wind direction changing blades 71a, 71b, 71c, 71d. Further, in the ceiling-mounted indoor unit 4, in order to prevent the ceiling surface in the air-conditioned room from being contaminated by the air-conditioned air blown out from the side air outlets 56a, 56b, 56c, 56d, the wind direction changing blades 71a, 71b, 71c, The upper limit of the wind direction angle of 71d can be set to a wind direction that is lower than the wind direction P0 and closest to the horizontal direction (for example, wind direction P1) (that is, cannot be set to the wind direction P0). ). In this case, the wind direction P1 corresponds to the horizontal blowing wind direction, and the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is lower than the wind direction P1, the wind direction P1, and the wind direction P2. The wind direction P3 can be changed to four levels, and the most downward wind direction P4. Note that such a wind direction setting (ceiling dirt prevention setting) for preventing the ceiling surface in the air-conditioned room from becoming dirty can be set by the remote controller 99.

  Further, the air volume of the indoor fan 41 is changed by changing the rotation speed of the indoor fan motor 41a, so that the air volume H having the largest rotation speed and the large air volume H is smaller than the rotation speed of the air volume H. The air volume L is smaller than the rotational speed of the air volume M, and the air volume L is smaller than the rotational speed of the air volume L, and can be changed in four stages. Here, the air volume H, the air volume M, and the air volume L can be set based on requests from the remote controller 99, detection values of the various sensors 61, 62, 63, 31, 32, 33, 34, and 35. is there. However, the air volume LL cannot be set according to a request from the remote controller 99, and is set in a control manner in a predetermined control state.

<Operation>
Next, operation | movement of the air conditioning apparatus 1 which has the above structures is demonstrated. It should be noted that control of various devices and various processing necessary for performing the following operations are performed by the control unit 9.

  As an operation mode of the air conditioner 1, there are a plurality of (here, two) operation modes, a cooling mode for cooling the air-conditioned room and a heating mode for heating the air-conditioned room.

-Cooling mode-
As the operation in the cooling mode, there is a cooling operation for cooling the air-conditioned room. Further, during the cooling operation, various settings relating to the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d and the air volume of the indoor fan 41 are possible.

(1) Cooling operation In the cooling operation, the refrigerant in the refrigerant circuit 10 is circulated so that the outdoor heat exchanger 23 functions as a refrigerant radiator and the indoor heat exchanger 42 functions as a refrigerant evaporator. Thus, the air in the air-conditioned room is cooled and supplied as air-conditioned air to the air-conditioned room.

  In the cooling operation, the outdoor heat exchanger 23 functions as a refrigerant radiator and the indoor heat exchanger 42 functions as a refrigerant evaporator (that is, indicated by the solid line of the four-way switching valve 22 in FIG. 1). The four-way selector valve 22 is switched so that

  In the refrigerant circuit 10 in such a state, the low-pressure refrigerant in the refrigeration cycle is sucked into the compressor 21 and is discharged after being compressed to a high pressure in the refrigeration cycle. The high-pressure refrigerant discharged from the compressor 21 is sent to the outdoor heat exchanger 23 through the four-way switching valve 22. The high-pressure refrigerant sent to the outdoor heat exchanger 23 radiates heat by exchanging heat with outdoor air supplied by the outdoor fan 27 in the outdoor heat exchanger 23. The high-pressure refrigerant that has dissipated heat in the outdoor heat exchanger 23 is sent to the expansion valve 24 and is decompressed to a low pressure in the refrigeration cycle. The low-pressure refrigerant decompressed by the expansion valve 24 is sent to the indoor heat exchanger 42 through the liquid side closing valve 25 and the liquid refrigerant communication pipe 5. The low-pressure refrigerant sent to the indoor heat exchanger 42 evaporates by exchanging heat with air in the air-conditioned room supplied by the indoor fan 41 in the indoor heat exchanger 42. Thereby, the air in the air-conditioned room is cooled to become air-conditioned air, and is blown out from the air outlet 56 (more specifically, air outlets 56a, 56b, 56c, 56d) into the air-conditioned room. The low-pressure refrigerant evaporated in the indoor heat exchanger 42 is again sucked into the compressor 21 through the gas refrigerant communication pipe 6, the gas side closing valve 26 and the four-way switching valve 22.

(2) Various wind directions and air volume settings in the cooling operation In the cooling operation described above, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d, and so on, so as to improve the comfort of the person in the air conditioning room, and The air volume of the indoor fan 41 can be set to various wind directions and air volumes.

  First, a person or the like in the air-conditioned room can manually set the air direction and air volume from the remote controller 99. For example, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d can be set to any one of the wind direction P0, the wind direction P1, the wind direction P2, the wind direction P3, or the wind direction P4, or can be set to a swing state. . Moreover, the air volume of the indoor fan 41 can be set to any of the air volume H, the air volume M, or the air volume L.

  Thereby, the person who exists in an air conditioned room can obtain the wind direction and air volume setting with the highest comfort according to liking.

  In addition, the wind direction and the air volume can be set based on the distribution of people in the air-conditioned room (here, whether or not there are people in the blowing areas A ′, B ′, C ′, D ′). For example, when the human detection sensors 62a, 62b, 62c, 62d detect the presence of a person in any of the blowout areas A ′, B ′, C ′, D ′, the presence of the person is determined based on the detected value. The wind direction angle of the wind direction changing blades at the side air outlets corresponding to the detected blowout areas A ′, B ′, C ′, and D ′ can be set to the wind direction P0 as the horizontal wind direction. On the other hand, in the blowing area where the absence of a person is detected among the blowing areas A ′, B ′, C ′, and D ′, the wind direction changing blades at the side outlet corresponding to the blowing area where the presence of the person is detected Can be set to wind directions P1, P2, P3, etc. that are lower than the wind direction P0 as the horizontal wind direction. When the ceiling dirt prevention setting is made, the horizontal wind direction is lower than the wind direction P0 and the wind direction closest to the horizontal direction (for example, the wind direction P1). In the area, the wind direction is set to be lower than the horizontal wind direction when the ceiling dirt prevention setting is made.

  As a result, it is possible to suppress discomfort caused by the draft of people present in the blowout areas A ′, B ′, C ′, D ′, and to improve the comfort of the people in the air-conditioned room. It should be noted that turning on / off of the wind direction / air volume setting by the human detection sensors 62a, 62b, 62c, 62d can be performed from the remote controller 99.

  Further, the air direction and the air volume can be set based on the temperature Tf of the floor surface in the air-conditioned room detected by the floor temperature sensor 63. For example, when the temperature Tf of the floor surface in the air-conditioned room is higher than the target floor surface temperature Tfs, the wind direction angle of each of the wind direction change blades 71a, 71b, 71c, 71d is a downward wind direction (for example, wind directions P3, P4, etc.) Can be set to On the other hand, when the temperature Tf of the floor surface in the air-conditioned room reaches the target floor surface temperature Tfs, the wind direction angle of each of the wind direction change blades 71a, 71b, 71c, 71d is higher than the wind direction P3, P4, etc. For example, it can be set to wind direction P0, P1, etc.

  Thereby, when the vicinity of the floor surface in the air-conditioned room is not sufficiently cooled, the cold air can reach the floor surface, and the comfort of the person in the air-conditioned room can be improved. It should be noted that the air temperature / air volume setting by the floor temperature sensor 63 can be turned on / off from the remote controller 99.

  Further, the wind direction and the air volume can be set based on the intake air temperature Tr detected by the intake air temperature sensor 61. For example, an average temperature Tav between the intake air temperature Tr and the floor temperature Tf in the air-conditioning room is calculated, and when the average temperature Tav is higher than a predetermined target average temperature Tavs, each of the wind direction changing blades 71a, 71b, The wind direction angles 71c and 71d can be set to downward wind directions (for example, wind directions P3 and P4). On the other hand, when the average temperature Tav reaches a predetermined target average temperature Tavs, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is higher than the wind directions P3, P4, etc. (for example, the wind direction P0). , P1, etc.).

  The intake air temperature Tr is a representative value of the upper temperature in the air-conditioned room, and the floor temperature Tf is a representative value of the lower temperature in the air-conditioned room. The vertical temperature difference ΔTc (here, the difference between the two temperatures) , ΔTc = Tf−Tr) is equal to or greater than the predetermined temperature difference ΔTc1s, it is determined that temperature unevenness occurs between the upper and lower portions of the air-conditioned room. The wind direction angle of each wind direction changing blade 71a, 71b, 71c, 71d can be set to a downward wind direction (for example, wind direction P3, P4, etc.). On the other hand, when the vertical temperature difference ΔTc is equal to or less than the predetermined temperature difference ΔTc2s, it is determined that there is no temperature unevenness between the upper part and the lower part of the air conditioning room, and when there is no temperature unevenness, The wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d can be set to an upward wind direction (for example, wind directions P0, P1, etc.) relative to the wind directions P3, P4 and the like.

  As a result, when the vicinity of the floor in the air-conditioned room is not sufficiently cooled, that is, when the temperature in the air-conditioned room is uneven, the cold air can reach the floor, and the person in the air-conditioned room Comfort can be improved. Note that the air direction / air volume setting by the intake air temperature sensor 61 can be turned on / off from the remote controller 99. Further, the representative values of the upper and lower temperatures in the air-conditioned room are not limited to the detected values of the intake air temperature sensor 61 and the floor temperature sensor 63, and the detected values of other temperature sensors may be used. . For example, in a configuration in which the remote controller 99 is provided with a temperature sensor, the detected value of this temperature sensor may be used as a representative value of the lower temperature in the air-conditioned room.

  Note that the air direction / air volume setting by the human detection sensor 62 may be used together with the air direction / air volume setting by the floor temperature sensor 63 or the air direction / air volume setting by the intake air temperature sensor 61. For example, the blowout area A ′ in which the presence of a person is detected by the human detection sensors 62a, 62b, 62c, and 62d while the wind direction and the air volume are set by the floor temperature sensor 63 or the air direction and the air volume is set by the intake air temperature sensor 61. , B ′, C ′, and D ′ corresponding to the wind direction angle P0 as the horizontal blowing wind direction (if ceiling dirt prevention setting is set, the wind direction P0 is lower than the wind direction P0 and most horizontally) (Near wind direction) can be set.

  Accordingly, it is possible to suppress discomfort caused by a draft of a person existing in the blowing areas A ′, B ′, C ′, and D ′ while allowing the cold air to reach the floor surface.

  As described above, in the cooling operation, the desired wind direction and air volume can be set as described above according to a request from a person in the air conditioning room.

−Heating mode−
As the operation in the heating mode, there is a heating operation for heating the air-conditioned room. Further, during the heating operation, various settings relating to the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d and the air volume of the indoor fan 41 are possible.

(1) Heating operation In the heating operation, the refrigerant in the refrigerant circuit 10 is circulated so that the outdoor heat exchanger 23 functions as a refrigerant evaporator and the indoor heat exchanger 42 functions as a refrigerant radiator. Thus, the air in the air-conditioned room is heated and supplied to the air-conditioned room as air-conditioned air.

  In the heating operation, the outdoor heat exchanger 23 functions as a refrigerant evaporator and the indoor heat exchanger 42 functions as a refrigerant radiator (that is, indicated by a broken line of the four-way switching valve 22 in FIG. 1). The four-way selector valve 22 is switched so that

  In the refrigerant circuit 10 in such a state, the low-pressure refrigerant in the refrigeration cycle is sucked into the compressor 21 and is discharged after being compressed to a high pressure in the refrigeration cycle. The high-pressure refrigerant discharged from the compressor 21 is sent to the indoor heat exchanger 42 through the four-way switching valve 22, the gas side closing valve 26 and the gas refrigerant communication pipe 6. The high-pressure refrigerant sent to the indoor heat exchanger 42 radiates heat by exchanging heat with the air in the air-conditioned room supplied by the indoor fan 41 in the indoor heat exchanger 42. As a result, the air in the air-conditioned room is heated to become air-conditioned air, and is blown out from the air outlet 56 (more specifically, the air outlets 56a, 56b, 56c, 56d) into the air-conditioned room. The high-pressure refrigerant that has radiated heat in the indoor heat exchanger 42 is sent to the expansion valve 24 through the liquid refrigerant communication tube 5 and the liquid-side shut-off valve 25, and is depressurized to a low pressure in the refrigeration cycle. The low-pressure refrigerant decompressed by the expansion valve 24 is sent to the outdoor heat exchanger 23. The low-pressure refrigerant sent to the outdoor heat exchanger 23 evaporates by exchanging heat with the air in the air-conditioned room supplied by the outdoor fan 27 in the outdoor heat exchanger 23. The low-pressure refrigerant evaporated in the outdoor heat exchanger 23 is again sucked into the compressor 21 through the four-way switching valve 22.

(2) Various wind directions and air volume settings in the heating operation In the above heating operation, as in the cooling operation, the wind direction changing blades 71a, 71b, 71c, The wind direction angle 71d and the air volume of the indoor fan 41 can be set to various wind directions and air volumes.

  First, a person or the like in the air-conditioned room can manually set the air direction and air volume from the remote controller 99. For example, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d can be set to any one of the wind direction P0, the wind direction P1, the wind direction P2, the wind direction P3, or the wind direction P4, or can be set to a swing state. . Moreover, the air volume of the indoor fan 41 can be set to any of the air volume H, the air volume M, or the air volume L.

  Thereby, the person who exists in an air conditioned room can obtain the wind direction and air volume setting with the highest comfort according to liking.

  In addition, the wind direction and the air volume can be set based on the distribution of people in the air-conditioned room (here, whether or not there are people in the blowing areas A ′, B ′, C ′, D ′). For example, when the human detection sensors 62a, 62b, 62c, 62d detect the presence of a person in any of the blowout areas A ′, B ′, C ′, D ′, the presence of the person is determined based on the detected value. The wind direction angle of the wind direction changing blades at the side air outlets corresponding to the detected blowout areas A ′, B ′, C ′, and D ′ can be set to the wind direction P0 as the horizontal wind direction. On the other hand, in the blowing area where the absence of a person is detected among the blowing areas A ′, B ′, C ′, and D ′, the wind direction changing blades at the side outlet corresponding to the blowing area where the presence of the person is detected Can be set to wind directions P1, P2, P3, etc. that are lower than the wind direction P0 as the horizontal wind direction. When the ceiling dirt prevention setting is made, the horizontal wind direction is lower than the wind direction P0 and the wind direction closest to the horizontal direction (for example, the wind direction P1). In the area, the wind direction is set to be lower than the horizontal wind direction when the ceiling dirt prevention setting is made.

  As a result, it is possible to suppress discomfort caused by the draft of people present in the blowout areas A ′, B ′, C ′, D ′, and to improve the comfort of the people in the air-conditioned room. It should be noted that turning on / off of the wind direction / air volume setting by the human detection sensors 62a, 62b, 62c, 62d can be performed from the remote controller 99.

  Further, the air direction and the air volume can be set based on the temperature Tf of the floor surface in the air-conditioned room detected by the floor temperature sensor 63. For example, when the temperature Tf of the floor surface in the air-conditioned room is lower than the target floor surface temperature Tfs, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is set to a downward wind direction (for example, wind directions P3, P4, etc.) Can be set to On the other hand, when the temperature Tf of the floor surface in the air-conditioned room reaches the target floor surface temperature Tfs, the wind direction angle of each of the wind direction change blades 71a, 71b, 71c, 71d is higher than the wind direction P3, P4, etc. For example, it can be set to wind direction P0, P1, etc.

  Thereby, when the vicinity of the floor surface in the air-conditioned room is not sufficiently warmed, the warm air can reach the floor surface, and the comfort of the person in the air-conditioned room can be improved. It should be noted that the air temperature / air volume setting by the floor temperature sensor 63 can be turned on / off from the remote controller 99.

  Further, the wind direction and the air volume can be set based on the intake air temperature Tr detected by the intake air temperature sensor 61. For example, an average temperature Tav between the intake air temperature Tr and the floor temperature Tf in the air-conditioning room is calculated, and when the average temperature Tav is lower than a predetermined target average temperature Tavs, each of the wind direction changing blades 71a, 71b, The wind direction angles 71c and 71d can be set to downward wind directions (for example, wind directions P3 and P4). On the other hand, when the average temperature Tav reaches a predetermined target average temperature Tavs, the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is higher than the wind directions P3, P4, etc. (for example, the wind direction P0). , P1, etc.).

  The intake air temperature Tr is a representative value of the upper temperature in the air-conditioned room, and the floor surface temperature Tf is a representative value of the lower temperature in the air-conditioned room. , ΔTh = Tr−Tf) is equal to or greater than a predetermined temperature difference ΔTh1s, it is determined that temperature unevenness is occurring between the upper and lower portions of the air-conditioning room. The wind direction angle of each wind direction changing blade 71a, 71b, 71c, 71d can be set to a downward wind direction (for example, wind direction P3, P4, etc.). On the other hand, when the vertical temperature difference ΔTh is equal to or less than the predetermined temperature difference ΔTh2s, it is determined that there is no temperature unevenness between the upper part and the lower part of the air conditioning room, and when there is no temperature unevenness, The wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d can be set to an upward wind direction (for example, wind directions P0, P1, etc.) relative to the wind directions P3, P4 and the like.

  As a result, when the vicinity of the floor surface in the air-conditioned room is not sufficiently warm, that is, when temperature unevenness occurs in the air-conditioned room, warm air can reach the floor surface, Comfort can be improved. Note that the air direction / air volume setting by the intake air temperature sensor 61 can be turned on / off from the remote controller 99. Further, the representative values of the upper and lower temperatures in the air-conditioned room are not limited to the detected values of the intake air temperature sensor 61 and the floor temperature sensor 63, and the detected values of other temperature sensors may be used. . For example, in a configuration in which the remote controller 99 is provided with a temperature sensor, the detected value of this temperature sensor may be used as a representative value of the lower temperature in the air-conditioned room.

  Note that the air direction / air volume setting by the human detection sensor 62 may be used together with the air direction / air volume setting by the floor temperature sensor 63 or the air direction / air volume setting by the intake air temperature sensor 61. For example, the blowout area A ′ in which the presence of a person is detected by the human detection sensors 62a, 62b, 62c, and 62d while the wind direction and the air volume are set by the floor temperature sensor 63 or the air direction and the air volume is set by the intake air temperature sensor 61. , B ′, C ′, and D ′ corresponding to the wind direction angle P0 as the horizontal blowing wind direction (if ceiling dirt prevention setting is set, the wind direction P0 is lower than the wind direction P0 and most horizontally) (Near wind direction) can be set.

  As a result, it is possible to suppress discomfort caused by a draft of a person existing in the blowing areas A ′, B ′, C ′, and D ′ while allowing warm air to reach the floor surface.

  As described above, even in the heating operation, the desired wind direction and air volume can be set as described above according to the request of the person in the air-conditioned room.

-Control example related to wind direction setting using human detection sensor-
Next, a control example relating to wind direction setting using the human detection sensors 62a, 62b, 62c, and 62d provided corresponding to the respective blowout areas A ′, B ′, C ′, and D ′ will be described. Here, a control example in which the wind direction setting by the human detection sensors 62a, 62b, 62c, and 62d and the wind direction setting by the floor temperature sensor 63 are used together will be described with reference to FIGS. 6 and 9 to 11. Here, FIG. 11 is a flowchart showing control related to wind direction setting using the human detection sensors 62a, 62b, 62c, and 62d.

  First, in step S1, a wind direction control mode is selected. Here, the wind direction control mode includes a fixed mode, a swing mode, and a human detection mode. The fixed mode is a wind direction control mode in which the wind direction angle of each of the wind direction changing blades 71a, 71b, 71c, 71d is fixed at a desired wind direction angle. The swing mode is a wind direction control mode in which each of the wind direction changing blades 71a, 71b, 71c, 71d is in a state in which the swing operation is performed. The person detection mode is based on the presence or absence of a person in each of the blowing areas A ′, B ′, C ′, and D ′ detected by the person detecting sensors 62a, 62b, 62c, and 62d. This is a wind direction control mode for performing control to set the wind direction angle of the wind direction changing blades 71a, 71b, 71c, 71d corresponding to B ′, C ′, D ′. If it is determined in step S2 that the human detection mode is selected, the process proceeds to step S3, and the wind direction control in the human detection mode after step S5 is performed. On the other hand, if it is determined in step S2 that a wind direction control mode other than the human detection mode (fixed mode or swing mode) is selected, the process proceeds to step S4, and in other wind direction control modes. Wind direction control is performed.

  Next, in Step S3, when it is determined that the operation mode of the air conditioner 1 is the cooling mode (cooling operation), the process proceeds to Step S5. In step S5, it is determined whether each person detection sensor 62a, 62b, 62c, 62d has detected the presence of a person in each blowing area A ', B', C ', D'. This determination is made for each person detection sensor 62a, 62b, 62c, 62d.

  Then, in step S5, for the blowing area where the presence of the person is detected, the process proceeds to step S8 or step S9 through step S7, and the wind direction angle of the wind direction change blade corresponding to the blowing area where the presence of the person is detected is Control is performed to set the horizontal blown air direction, which is the wind direction angle at which the conditioned air blows off in the horizontal direction. Here, step S7 is a process of determining whether the ceiling dirt prevention setting is made by the remote controller 99. If the ceiling dirt prevention setting is not made, the wind direction P0 is set as the horizontal blowing air direction in step S8. If the ceiling dirt prevention setting is set, the wind direction that is lower than the wind direction P0 and closest to the horizontal direction (here, the wind direction P1) is set as the horizontal wind direction.

  On the other hand, with respect to the blowing area where the absence of a person is detected, the process proceeds to step S10, and it is determined whether or not temperature unevenness in the air-conditioned room has occurred. Here, with the intake air temperature Tr as a representative value of the upper temperature in the air-conditioned room and the floor temperature Tf as the representative value of the lower temperature in the air-conditioned room, the vertical temperature difference ΔTc (here, the difference between the two temperatures) If ΔTc = Tf−Tr) is equal to or greater than a predetermined temperature difference ΔTc1s, it is determined that temperature unevenness has occurred between the upper part and the lower part of the air conditioning room, and the vertical temperature difference ΔTc is a predetermined temperature. When the difference is equal to or less than ΔTc2s, it is determined that there is no temperature unevenness between the upper part and the lower part of the air conditioning room. The predetermined temperature difference ΔTc1s is set to a value equal to or greater than the predetermined temperature difference ΔTc2s.

  If it is determined in step S10 that the temperature unevenness in the air-conditioned room has occurred, the process proceeds to step S11, and the wind direction change blade corresponding to the blowing area where the absence of a person is detected in step S5. Control is performed to set the wind direction angle to a direction lower than the horizontal blowing direction. Here, when the ceiling dirt prevention setting is not made, the wind direction downward from the horizontal blowing wind direction is a preset wind direction among the wind directions P1 to P4 (for example, the wind direction P0 which is the horizontal blowing wind direction). When the ceiling dirt prevention setting is made for only one step, the preset wind direction (for example, the wind direction P0, which is the horizontal blown wind direction) of the wind directions P2 to P4, is only one step. The downward wind direction P2).

  On the other hand, if it is determined in step S10 that there is no temperature unevenness in the air-conditioned room, the flow proceeds to step S12, and the wind direction changing blade corresponding to the blowing area where the absence of a person is detected in step S5. The wind direction angle is set to the horizontal blowing direction.

  Moreover, when it determines with the operation mode of the air conditioning apparatus 1 being heating mode (heating operation) in step S3, it transfers to step S6. In step S6, as in step S5, it is determined whether each person detection sensor 62a, 62b, 62c, 62d detects the presence of a person in each blowing area A ', B', C ', D'.

  In step S6, the blowing area in which the presence of a person is detected moves to step S8 or step S9 through step S7 in the same manner as in the cooling mode, and corresponds to the blowing area in which the presence of a person is detected. Control is performed to set the wind direction angle of the wind direction changing blade to the horizontal blown wind direction that is the wind direction angle at which the conditioned air blows out in the horizontal direction.

  On the other hand, for the blowing area where the absence of a person is detected, the process proceeds to step S13, and it is determined whether or not the temperature unevenness in the air-conditioned room has occurred. Here, with the intake air temperature Tr as the representative value of the upper temperature in the air-conditioned room and the floor temperature Tf as the representative value of the lower temperature in the air-conditioned room, the vertical temperature difference ΔTh (here, the difference between the two temperatures) Then, when ΔTh = Tr−Th) is equal to or greater than a predetermined temperature difference ΔTh1s, it is determined that temperature unevenness occurs between the upper and lower portions of the air-conditioning room, and the vertical temperature difference ΔTh is equal to the predetermined temperature. When the difference is ΔTh2s or less, it is determined that there is no temperature unevenness between the upper part and the lower part of the air conditioning room. The predetermined temperature difference ΔTh1s is set to a value equal to or greater than the predetermined temperature difference ΔTh2s.

  And when it determines with the temperature nonuniformity having arisen in the air conditioned room in step S13, it transfers to step S14 and the wind direction change blade | wing corresponding to the blowing area where the non-existence of the person was detected in step S6 Is controlled to set the wind direction angle of the air to the direct blown wind direction (in this case, the wind direction P4).

  On the other hand, if it is determined in step S13 that there is no temperature unevenness in the air-conditioned room, the process proceeds to step S15, and the wind direction changing blade corresponding to the blowing area where the absence of a person is detected in step S6. The control is performed so that the wind direction angle is set to an upward wind direction than the direct blowing wind direction. Here, when the ceiling dirt prevention setting is not made, the wind direction upward from the direct blown wind direction is a preset wind direction among the wind directions P1 to P3 (for example, the wind direction P4 that is the direct blown wind direction). When the ceiling dirt prevention setting is made for only one step, the wind direction P2 is set to one of the preset wind directions (for example, the wind direction P4, which is the direct downwind direction). The upward wind direction P3).

<Features>
The ceiling-mounted indoor unit 4 of the air conditioner 1 has the following characteristics due to the configuration and operation described above.

-A-
In the ceiling-mounted indoor unit 4, the detection areas A, B, C, and D of the human detection sensors 62a, 62b, 62c, and 62d as the area sensors are matched with the blowout areas A ′, B ′, C ′, and D ′. Since the information (here, the presence / absence of a person) in each blowing area A ′, B ′, C ′, D ′ can be detected at the same time, each blowing area A ′, B ′, Information on C ′ and D ′ can be detected.

  In particular, since the ceiling-mounted indoor unit 4 can simultaneously detect the presence or absence of a person in each of the outlet areas A ′, B ′, C ′, and D ′, the outlet areas A ′, B ′, and C ′. , It is possible to accurately detect the presence or absence of a person in D ′. Thereby, the operation control using the human detection sensors 62a, 62b, 62c, and 62d as described above can be effectively performed.

-B-
In the ceiling-mounted indoor unit 4, the wiring of the human detection sensors 62a, 62b, 62c, and 62d as a plurality of (here, four) area sensors can be integrated into one place, so that wiring work and the like are easily performed. be able to.

-C-
In the ceiling-mounted indoor unit 4, compared to the case where the indoor unit 4 is arranged in the air outlet formation area 76, the human detection sensors 62 a, 62 b, 62 c and 62 d as area sensors are blown out from the side air outlets 56 a, 56 b, 56 c and 56 d. Therefore, it is difficult to be affected by the temperature of the air-conditioned air, and it is possible to suppress a decrease in detection accuracy of the human detection sensors 62a, 62b, 62c, and 62d.

-D-
In the ceiling-mounted indoor unit 4, since the floor temperature sensor 63 is also provided in addition to the human detection sensors 62a, 62b, 62c, and 62d, operation control using both sensors can be performed as described above.

  Moreover, in the ceiling-mounted indoor unit 4, not only the human detection sensors 62a, 62b, 62c, and 62d but also the wiring of the floor temperature sensor 63 can be integrated into one place, so that wiring work and the like can be easily performed.

-E-
In the ceiling-mounted indoor unit 4, the wind direction angles of the wind direction change blades 71a, 71b, 71c, 71d are independently set based on the distribution of people in the air-conditioned room detected by the human detection sensors 62a, 62b, 62c, 62d. By setting, the wind direction setting of the conditioned air blown out from each side outlet 56a, 56b, 56c, 56d can be controlled independently, thereby improving the comfort of the person in the conditioned room. Can be planned.

-F-
In the ceiling-mounted indoor unit 4, for the blowing area where the presence of a person is detected, the wind direction angle of the corresponding wind direction changing blade is set to the horizontal blowing direction (here, the most horizontal of the changeable range of the wind direction angle of the wind direction changing blade). Since the control is set to the wind direction P0 and the wind direction P1) that are close to the direction, it is possible to suppress the discomfort caused by the drafts of people present in each of the blowout areas A ′, B ′, C ′, and D ′. It is possible to improve the comfort of people in the room.

-G-
If only the control for setting the wind direction angle of the wind direction change blade corresponding to the blowing area where the presence of a person is detected to the horizontal blowing direction is performed, temperature unevenness is likely to occur between the upper part and the lower part in the air-conditioned room. For this reason, it is preferable to suppress the occurrence of temperature unevenness between the upper part and the lower part in the air-conditioned room, while suppressing the discomfort caused by the draft of the person existing in each of the blowout areas A ′, B ′, C ′, and D ′. .

  Therefore, in the ceiling-mounted indoor unit 4, in the heating operation, if the temperature difference ΔTh between the upper part and the lower part in the air-conditioned room is equal to or larger than the predetermined temperature difference ΔTh1s, it is determined that the temperature unevenness in the air-conditioned room has occurred. Thus, the wind direction angle of the wind direction change blade corresponding to the blowing area where the absence of a person is detected is set to the directly below wind direction (here, the most downward wind direction P4 in the changeable range of the wind direction angle of the wind direction change blade). Control is performed so that warm air reaches near the floor in the air-conditioned room.

  Further, in the cooling operation, when the temperature difference ΔTc between the upper part and the lower part in the air-conditioned room is equal to or larger than the predetermined temperature difference ΔTc1s, it is determined that the temperature unevenness in the air-conditioned room has occurred, and the absence of a person is detected. The wind direction angle of the wind direction changing blade corresponding to the blown out area is set to a wind direction that is downward from the horizontal wind direction (here, the wind direction P1 and the wind direction P2 that are one level lower than the wind direction P0 and the wind direction P1 that are horizontal wind directions). The setting control is performed so that the cold air reaches the vicinity of the floor in the air-conditioned room.

  Thereby, in heating operation and cooling operation, temperature unevenness is generated between the upper part and the lower part in the air-conditioned room while suppressing the discomfort caused by the draft of the person existing in each of the blowout areas A ′, B ′, C ′, and D ′. It can be suppressed from occurring.

[Second Embodiment]
<Configuration>
-Overall, outdoor unit, liquid refrigerant communication tube, gas refrigerant communication tube and control unit-
FIG. 12 is a schematic configuration diagram of an air conditioner 101 in which the ceiling-mounted indoor unit 104 according to the second embodiment of the present invention is employed. The air conditioner 101 is a split type air conditioner, similar to the air conditioner 1 of the first embodiment, and is mainly an outdoor unit 2, a ceiling-mounted indoor unit 104, an outdoor unit 2, and a ceiling-mounted indoor room. A liquid refrigerant communication pipe 5 and a gas refrigerant communication pipe 6 that connect the unit 104 are provided, and a vapor compression refrigerant circuit 10 is configured.

  The air conditioner 101 has the same configuration as that of the air conditioner 1 of the first embodiment except that the configuration of the ceiling-mounted indoor unit 104 is different. The description of the configuration of the liquid refrigerant communication tube 5, the gas refrigerant communication tube 6, and the control unit 9 is omitted.

−Ceiling-mounted indoor unit−
Here, the ceiling-installed indoor unit 104 employs a ceiling-installed air conditioner called a ceiling-embedded type. As illustrated in FIGS. 12 to 15, the ceiling-mounted indoor unit 104 includes a casing 151 that houses various components. The casing 151 includes a casing main body 51a and a decorative panel 152 disposed on the lower side of the casing main body 51a. As shown in FIG. 12, the casing main body 51a is inserted and arranged in an opening formed in the ceiling U of the air conditioning room. And the decorative panel 152 is arrange | positioned so that it may fit in opening of the ceiling U. FIG. Here, FIG. 12 is an external perspective view of the ceiling-mounted indoor unit 104. FIG. 13 is a schematic side cross-sectional view of the ceiling-mounted indoor unit 104, and is a cross-sectional view taken along the line I-O-I of FIG. FIG. 14 is a schematic plan view showing a state in which the top plate 53 of the ceiling-mounted indoor unit 104 is removed. FIG. 15 is a plan view of the decorative panel 152 of the ceiling-mounted indoor unit 104 as viewed from the air-conditioned room.

  Since the casing body 51a is the same as the casing body 51a of the first embodiment, the description of the casing body 51a is omitted here.

  The decorative panel 152 is a plate body having a substantially polygonal shape (here, substantially rectangular shape) in plan view constituting the lower surface of the casing 151, and is mainly a panel body fixed to the lower end of the casing body 51a. 152a. The panel main body 152a has a suction port 55 for sucking air in the air-conditioned room at substantially the center thereof, and a blower outlet 156 for blowing air-conditioned air into the air-conditioned room formed so as to surround the suction port 55 in plan view. ing. The suction port 55 is a substantially quadrangular opening. The suction port 55 is provided with a suction grill 57 and a suction filter 58 for removing dust in the air sucked from the suction port 55. The blower outlets 156 are formed at a plurality of (here, four) side blower outlets 56a, 56b, 56c, and 56d formed along the four sides of the panel main body 152a, and at the corners of the panel main body 152a. A plurality of (here, four) corner outlets 56e, 56f, 56g, and 56h are formed. The corner air outlets 56e, 56f, 56g, and 56h are adjacent side air outlets 56a sandwiching the outer peripheral edge of each of the side air outlets 56a, 56b, 56c, and 56d in plan view and the corner of the lower surface of the decorative panel 52. , 56b, 56c, and 56d are arranged in a blower outlet formation area 76 surrounded by a line 75 connecting the outer peripheral edges in plan view. Here, the outer peripheral edges of the corner blower outlets 56 e, 56 f, 56 g, and 56 h are arranged on a line 75 that forms the blower outlet formation area 76. Moreover, the blower outlet formation area 76 is arrange | positioned at the inner peripheral side of the area enclosed by the side plates 54a, 54b, 54c, 54d, 54e, 54f, 54g, and 54h which form the casing main body 51a. Here, the area where air conditioning is performed by the arrival of the airflow of conditioned air (see arrows X1, Y1, and Y2 in FIG. 15) mainly blown from the side air outlet 56a is defined as the blowout area A ′ (see FIG. 6). ). In addition, an area where air conditioning is performed by the arrival of an airflow of conditioned air mainly blown from the side air outlet 56b (see arrows X2, Y2, and Y3 in FIG. 15) is a blowout area B ′ (see FIG. 6). And In addition, an area where air conditioning is performed by the arrival of airflow of conditioned air (see arrows X3, Y3, and Y4 in FIG. 15) mainly blown out from the side air outlet 56c is a blowout area C ′ (see FIG. 6). And Further, the area where air conditioning is performed by the arrival of the airflow of conditioned air mainly blown from the side air outlet 56d (see arrows X4, Y4, Y1 in FIG. 15) is blown out area D ′ (see FIG. 6). And

  In each of the side air outlets 56a, 56b, 56c, and 56d, a plurality (in this case, 4) that can change the vertical direction angle of the conditioned air blown out from each side air outlet into the air conditioned room. Wind direction changing blades 71a, 71b, 71c, 71d. The wind direction changing blades 71a, 71b, 71c, 71d are plate-like members that are elongated along the longitudinal direction of the side air outlets 56a, 56b, 56c, 56d. Both ends in the longitudinal direction of each of the wind direction changing blades 71a, 71b, 71c, 71d are supported by the decorative panel 52 so as to be rotatable around an axis in the longitudinal direction. And each wind direction change blade | wing 71a, 71b, 71c, 71d is driven by blade drive motor 74a, 74b, 74c, 74d. Thereby, the wind direction change blades 71a, 71b, 71c, 71d can change the wind direction angle in the vertical direction independently.

  Inside the casing main body 51a, an indoor fan 41 and an indoor heat exchanger 42 are mainly disposed. Here, since the indoor fan 41 and the indoor heat exchanger 42 are the same as the indoor fan 41 and the indoor heat exchanger 42 of the first embodiment, description of the indoor fan 41 and the indoor heat exchanger 42 is omitted here. To do.

  A drain pan 145 for receiving drain water generated by condensation of moisture in the air by the indoor heat exchanger 42 is disposed below the indoor heat exchanger 42. The drain pan 145 is attached to the lower part of the casing body 51a. The drain pan 145 has blow holes 45a, 45b, 45c, 45d, 45e, 45f, 45g, 45h, a suction hole 45j, and a drain water receiving groove 45i. The blowout holes 45a, 45b, 45c, and 45d communicate with the blowout opening 156 (more specifically, the side blowout openings 56a, 56b, 56c, 56d, 56e, 56f, 56g, and 56h) of the decorative panel 152. It is a formed hole. The suction hole 45j is a hole formed so as to communicate with the suction port 55 of the decorative panel 152. The decorative panel 152 is provided with a panel heat insulating material 159 interposed between the drain pan 145 and the panel main body 152a in the vertical direction. The panel heat insulating material 159 communicates with the blowout holes 45a, 45b, 45c, 45d, 45e, 45f, 45g, 45h and the blowout openings 56a, 56b, 56c, 56d, 56e, 56f, 56g, 56h. , 59b, 59c, 59d, 59e, 59f, 59g, and 59h. Further, the panel heat insulating material 159 is formed with a panel suction hole 59j that allows the suction hole 45j and the suction hole 55 to communicate with each other. Side blow channels 60a, 60b, 60c, and 60d are formed by the blow holes 45a, 45b, 45c, and 45d and the panel blow holes 59a, 59b, 59c, and 59d. Further, the corner outlet channels 60e, 60f, 60g, 60h are formed by the outlet holes 45e, 45f, 45g, 45h and the panel outlet holes 59e, 59f, 59g, 59h. A suction flow path 60j is formed by the suction hole 45j and the panel suction hole 59j. That is, the peripheral edge portions of the blowout holes 45a, 45b, 45c, and 45d of the drain pan 145 and the peripheral edge portions of the panel blowout holes 59a, 59b, 59c, and 59d of the panel heat insulating material 159 are the sides of the conditioned air from the inside of the casing body 51a. Side blowout portions 80a, 80b, 80c, and 80d that form side blowout flow paths 60a, 60b, 60c, and 60d leading to the blowout ports 56a, 56b, 56c, and 56d are configured. Further, the peripheral portions of the blow holes 45e, 45f, 45g, and 45h of the drain pan 145 and the peripheral portions of the panel blow holes 59e, 59f, 59g, and 59h of the panel heat insulating material 159 are corner portions of the conditioned air from the inside of the casing body 51a. Corner portion outlet portions 80e, 80f, 80g, and 80h forming corner portion outlet passages 60e, 60f, 60g, and 60h leading to the outlet ports 56e, 56f, 56g, and 56h are configured. The peripheral portion of the suction hole 45j of the drain pan 145 and the peripheral portion of the panel suction hole 59j of the panel heat insulating material 59 form a suction passage 60j that guides conditioned air from the suction port 55 to the inside of the casing body 51a. 80j is configured. The drain water receiving groove 45 i is a groove formed to face the lower end of the indoor heat exchanger 42. A bell mouth 41 c for guiding air sucked from the suction port 55 to the impeller 41 b of the indoor fan 41 is disposed in the suction hole 45 j of the drain pan 145.

  The ceiling-mounted indoor unit 104 is provided with various sensors. Specifically, the ceiling-mounted indoor unit 104 is provided with an intake air temperature sensor 61, a human detection sensor assembly 62, and a floor temperature sensor 63. Here, the intake air temperature sensor 61, the human detection sensor assembly 62, and the floor temperature sensor 63 are the same as the intake air temperature sensor 61, the human detection sensor assembly 62, and the floor temperature sensor 63 of the first embodiment. Here, descriptions of the intake air temperature sensor 61, the human detection sensor assembly 62, and the floor temperature sensor 63 are omitted.

  Further, the corner blowing portion 80f corresponding to the corner of the decorative panel 152 provided with the human detection sensor assembly 62 is a sensor close to the human detection sensor assembly 62 as shown in FIGS. It has a proximity portion 81 and sensor remote portions 82 and 83 adjacent to the sensor proximity portion 81. And the surface 81a which forms the corner | angular part outlet flow path 60f of the sensor vicinity part 81 is nearer to the vertical plane Z than the surfaces 82a and 83a which comprise the corner | angular part outlet flow path 60f of the sensor remote parts 82 and 83. . More specifically, in the panel heat insulating material 159 that forms the portion near the corner outlet 56f of the corner outlet channel 60f, the center portion in the circumferential direction in the plan view of the decorative panel 152 forms the sensor vicinity 81. In addition, portions on both sides in the circumferential direction in the plan view of the decorative panel 152 form sensor far portions 82 and 83. The surface 81a on the inner peripheral side in plan view of the panel 152 of the sensor vicinity portion 81 forms an angle θ1 with respect to the vertical surface Z in the vicinity of the corner portion outlet 56f. On the other hand, the inner peripheral surfaces 82a and 83a in the plan view of the panel 152 of the sensor remote portions 82 and 83 form angles θ2 and θ3 with respect to the vertical surface Z in the vicinity of the corner outlet 56f. Yes. And angle (theta) 1 of the surface 81a which forms the corner blowing flow path 60f of the sensor vicinity part 81 is larger than the angles (theta) 2 and (theta) 3 of the surfaces 82a and 83a which form the corner blowing flow path 60f of the sensor remote parts 82 and 83. small. For this reason, the surface 81a that forms the corner outlet channel 60f of the sensor vicinity 81 is closer to the vertical plane Z than the surfaces 82a and 83a that form the corner outlet channel 60f of the sensor remote portion 82 and 83. Yes.

  Further, the ceiling-mounted indoor unit 104 has an indoor control unit 69 that controls the operation of each unit constituting the ceiling-mounted indoor unit 104. The indoor control unit 69 includes a microcomputer, a memory, and the like for controlling the ceiling-mounted indoor unit 104, and exchanges control signals and the like with the outdoor control unit 39 of the outdoor unit 2. Be able to.

  And the outdoor control part 39 and the indoor control part 69 comprise the control part 9 which performs operation control etc. of the air conditioning apparatus 101 (refer FIG. 1). In addition, the person who exists in an air conditioned room can perform a request | requirement of an operation | movement, a stop, etc. with respect to the control part 9 by the remote controller 99 (refer FIG. 1).

<Operation>
Next, the air conditioner 101 having the above-described configuration can perform the same operation as the air conditioner 1 of the first embodiment. For this reason, description of operation | movement of the air conditioning apparatus 101 is abbreviate | omitted here.

<Features>
The ceiling-mounted indoor unit 104 of the air conditioner 101 has the following characteristics due to the above configuration and operation.

-A-
The ceiling-mounted indoor unit 104 is the ceiling-mounted indoor unit of the first embodiment, except for the configuration associated with the corner outlets 56e, 56f, 56g, and 56h and the corner outlets 56e, 56f, 56g, and 56h. 4 can be configured and operated.

  For this reason, the ceiling-mounted indoor unit 104 can obtain the same operational effects as those of the ceiling-mounted indoor unit 4 of the first embodiment.

-B-
In the ceiling-mounted indoor unit 104, the corner outlets 56e, 56f, 56g, and 56h are formed at the corners of the decorative panel 152, and the human detection sensor assembly 62 is disposed at the corner outlets 56e, 56f, 56g, and 56h. (Here, it is provided so as to protrude downward from the decorative panel 152 in the vicinity of the corner portion outlet 56f). In this case, the conditioned air (see arrow Y2 in FIG. 15) blown from the corner outlet 56f easily collides with the human detection sensor assembly 62. As a result, the detection accuracy of the human detection sensors 62a, 62b, 62c, and 62d is lowered due to the influence of the temperature of the conditioned air blown from the corner outlet 56f. Condensation may occur on the body 62.

  However, in the ceiling-mounted indoor unit 104, as shown in FIGS. 17, 18 and 19, the surface 81 a that forms the corner outlet flow path 60 f of the sensor vicinity 81 near the human detection sensor assembly 62 is used as the sensor. The shape is closer to the vertical plane Z than the surfaces 82a and 83a constituting the corner outlet flow passages 60f of the sensor remote portions 82 and 83 adjacent to the vicinity portion 81.

  Thereby, in the ceiling-mounted indoor unit 104, the conditioned air blown from the sensor vicinity 81 of the corner blower outlet 56f is blown downward (see the arrow Y2 in FIG. 17), so the human detection sensor assembly 62 The human detection sensor assembly 62 is less likely to collide, and the human detection sensor assembly 62 is less likely to cause condensation. The vertical direction of the conditioned air blown from the sensor vicinity 81 (see the arrow Y2 in FIG. 17) is the vertical direction of the conditioned air blown from the sensor remote portions 82 and 83 (see the arrow Y2 in FIG. 18). Therefore, the air flow in the air-conditioned room sucked into the suction port 55 from the outer peripheral side of the ceiling-mounted indoor unit 104 is easily secured.

[Other Embodiments]
As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not restricted to these embodiment, It can change in the range which does not deviate from the summary of invention.

<A>
In the above embodiment, the present invention is applied to a ceiling-mounted indoor unit that blows conditioned air in four directions and a ceiling-mounted indoor unit that blows conditioned air in eight directions. However, the present invention is not limited to such a configuration, and the present invention can be applied to any ceiling-mounted indoor unit that blows out in a plurality of directions.

<B>
In the above embodiment, the present invention is applied to a configuration having a human detection sensor as an area sensor for detecting information in an air-conditioned room. However, the present invention is not limited to such a configuration. For example, the present invention may be applied to a configuration having a floor temperature sensor as an area sensor.

  INDUSTRIAL APPLICABILITY The present invention can be widely applied to ceiling-installed indoor units of air conditioners in which a casing is provided with a plurality of outlets and sensors that detect information in an air conditioning room.

4, 104 Ceiling-mounted indoor units 51, 151 Casing 52, 152 Decorative panel (lower surface of casing)
56a, 56b, 56c, 56d Side air outlet (air outlet)
56e, 56f, 56g, 56h Corner outlet 60e, 60f, 60g, 60h Corner outlet passage 62a, 62b, 62c, 62d Human detection sensor (area sensor)
63 Floor temperature sensor 71a, 71b, 71c, 71d Airflow direction change vane 76 Air outlet formation area 80e, 80f, 80g, 80h Corner portion blowing portion 81 Sensor vicinity portion 82, 83 Sensor far portion

JP 2007-32887 A

Claims (11)

A ceiling-mounted indoor unit of an air conditioner provided on the ceiling of an air conditioning room,
A casing (51, 151) having a plurality of outlets (56a, 56b, 56c, 56d) for blowing conditioned air into the conditioned room;
A plurality of area sensors (62a, 62b, 62c, 62d) that are provided in the casing so as to correspond to the air outlets and detect information in the air-conditioned room,
The detection area of each area sensor is matched to the blowout area to which the airflow of the conditioned air blown from each blowout outlet arrives.
A ceiling-mounted indoor unit (4, 104) for an air conditioner.   2. The ceiling-mounted air conditioner according to claim 1, wherein the plurality of area sensors (62 a, 62 b, 62 c, 62 d) are arranged together at one of corners of the casing (51, 151). Indoor unit (4, 104). The lower surfaces (52, 152) of the casing (51, 151) have a substantially polygonal shape in plan view.
The plurality of air outlets (56a, 56b, 56c, 56d) are formed on the lower surface of the casing along the polygonal sides of the lower surface of the casing,
The plurality of area sensors (62a, 62b, 62c, 62d) include an outer peripheral edge in a plan view of each of the air outlets and an outer peripheral edge in a plan view of the air outlets adjacent to each other with a corner portion of the lower surface of the casing interposed therebetween. It is arranged on the outer peripheral side of the outlet formation area (76) surrounded by the connecting line,
The ceiling-mounted indoor unit (4, 104) of the air conditioner according to claim 2.   The air conditioner according to any one of claims 1 to 3, wherein the plurality of area sensors (62a, 62b, 62c, 62d) are human detection sensors that detect presence or absence of a person in the air-conditioned room. Ceiling-mounted indoor units (4, 104).   The ceiling-mounted indoor unit for an air conditioner according to claim 4, wherein the casing (51, 151) is further provided with a floor temperature sensor (63) for detecting a temperature of the floor surface in the air-conditioned room. 4, 104).   The floor temperature sensor (63) is disposed at a corner of the lower surface (52, 152) of the casing (51, 151) provided with the human detection sensor (62a, 62b, 62c, 62d). The ceiling-mounted indoor unit (4, 104) of the air conditioner according to claim 5. In the plurality of air outlets (56a, 56b, 56c, 56d), a plurality of wind direction changing blades capable of independently changing the vertical air direction angle of the conditioned air blown out from the air outlets. (71a, 71b, 71c, 71d) are provided,
Control for setting the wind direction angle of the wind direction change blade corresponding to each blowing area based on the presence / absence of a person in each blowing area detected by each person detecting sensor (62a, 62b, 62c, 62d). Do,
The ceiling installation type indoor unit (4, 104) of the air conditioning apparatus of any one of Claims 4-6. When each person detection sensor (62a, 62b, 62c, 62d) detects the presence of a person in each blowing area, it corresponds to the blowing area in which the presence of a person is detected among the plurality of wind direction change blades. Control is performed to set the wind direction angle of the wind direction change blade to a horizontal blowing direction which is a wind direction angle at which the conditioned air is blown out horizontally.
The ceiling-mounted indoor unit (4, 104) of the air conditioner according to claim 7. In the heating operation, each person detection sensor (62a, 62b, 62c, 62d) detects the absence of a person in each blowing area, and the temperature difference between the upper part and the lower part in the air-conditioned room is equal to or greater than a predetermined temperature difference. When the conditioned air has the lowest airflow direction angle of the airflow direction change blade corresponding to the blowing area where the absence of a person is detected among the plurality of airflow direction change blades (71a, 71b, 71c, 71d). Control to set the direction of the direct blown wind, which is the wind direction angle blown in the direction,
The ceiling-mounted indoor unit (4, 104) of the air conditioner according to claim 8. In the cooling operation, each person detection sensor (62a, 62b, 62c, 62d) detects the absence of a person in each blowing area, and the temperature difference between the upper part and the lower part in the air-conditioned room is a predetermined temperature difference or more. The wind direction angle of the wind direction changing blade corresponding to the blowing area where the absence of a person is detected among the plurality of wind direction changing blades (71a, 71b, 71c, 71d) is greater than the horizontal blowing wind direction. Control to set the wind direction downward,
The ceiling installation type indoor unit (4, 104) of the air conditioning apparatus of Claim 8 or 9. Corner air outlets (56e, 56f, 56g, 56h) are formed at the corners of the lower surface (152) of the casing (151),
The casing has a corner outlet (80e, 80f, 80g, 80h) that forms a corner outlet channel (60e, 60f, 60g, 60h) for guiding the conditioned air from the inside to the corner outlet. And
The area sensors (62a, 62b, 62c, 62d) are provided so as to protrude from the lower surface of the casing in the vicinity of the corner outlet.
The corner blowout part has a sensor vicinity part (81) close to the area sensor and a sensor remote part (82, 83) adjacent to the sensor vicinity part,
The surface that forms the corner outlet channel of the sensor vicinity is closer to the vertical plane than the surface that forms the corner outlet channel of the sensor remote portion,
The ceiling installation type indoor unit (104) of the air conditioning apparatus of Claim 3.

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