JP2019133796A - Light emitting unit and air conditioner - Google Patents

Abstract

To provide a light emitting unit and an air conditioner, capable of grasping abnormalities of an illuminance sensor.SOLUTION: A light emitting unit 9 includes: an LED 61; an illuminance sensor 62 for detecting illuminance of an object space that is irradiated with the LED 61; and a light source substrate 60a allowing the LED 61 to emit light depending on detection results of the illuminance sensor 62. The light source substrate 60a determines abnormalities of the illuminance sensor 62 on the basis of a reference illuminance prescribed beforehand for a plurality of time zones in the object space and detection results of the illuminance sensor 62.SELECTED DRAWING: Figure 11

Description

  The present disclosure relates to a light emitting unit and an air conditioner.

  Conventionally, as a light for illuminating a target space, for example, as described in Patent Document 1 (Japanese Patent Laid-Open No. 2015-210934), an illuminance sensor and a light source are provided, and the amount of light of the light source according to the illuminance of the target space. There are lighting fixtures that are controlled.

  When the light intensity of the light source is controlled using the detected illuminance of such an illuminance sensor, if the illuminance sensor is abnormal and the detected illuminance is incorrect, the intended control of the light source cannot be performed. There is a fear. In particular, when any detected illuminance is obtained by the illuminance sensor, it is impossible to grasp whether the correct illuminance is detected or whether an abnormality has occurred and the correct illuminance cannot be detected.

  This indication is made in view of the point mentioned above, and the subject in this indication is providing the light emitting unit and air harmony device which can grasp abnormalities of an illuminance sensor.

  The light emitting unit according to the first aspect includes a light source unit, an illuminance sensor, and a control unit. The illuminance sensor detects the illuminance of the target space illuminated by the light source unit. The control unit causes the light source unit to emit light according to the detection result of the illuminance sensor. The control unit determines an abnormality of the illuminance sensor based on a reference illuminance predetermined for a plurality of time zones in the target space and a detection result of the illuminance sensor.

  The reference illuminance predetermined for a plurality of time zones in the target space may be the reference illuminance when the light source unit is not emitting light, or the reference illuminance when the light source unit emits light. May be.

  Even if the light emitting unit is used in a target space where the illuminance changes according to the time zone by comparing the detection result of the illuminance sensor with a predetermined reference illuminance for a plurality of time zones. It is possible to grasp whether or not the illuminance that should be detected by the unit can be detected. Thereby, it becomes possible to grasp the abnormality of the illuminance sensor.

  The light emitting unit according to the second aspect is the light emitting unit according to the first aspect, and the control unit determines an abnormality of the illuminance sensor using a reference illuminance selected based on a predetermined condition from a plurality of types of reference illuminance. To do.

  In this light emitting unit, the reference illuminance to be compared when judging the abnormality of the illuminance sensor is selected and used based on a predetermined condition from a plurality of types, so that the abnormality of the illuminance sensor can be grasped more accurately. Become.

  The light emitting unit according to the third aspect is a light emitting unit according to the first aspect or the second aspect, and includes a receiving unit that receives an input of reference illuminance.

  In this light emitting unit, it is possible to use the reference illuminance input from the reception unit in determining the abnormality of the illuminance sensor.

  The light emitting unit according to the fourth aspect is the light emitting unit according to any one of the first aspect to the third aspect, and the control unit is configured to adjust the illuminance according to at least one of season information, sunrise time information, and sunset time information. An abnormality of the illuminance sensor is determined using the reference illuminance reflecting the difference.

  In this light emitting unit, since the abnormality of the illuminance sensor is determined using the reference illuminance reflecting the difference in illuminance due to at least one of the season information, the sunrise time information, and the sunset time information, the illuminance sensor abnormality is more accurately detected. It becomes possible to grasp.

  An air conditioner according to a fifth aspect includes an air-conditioning indoor unit provided with the light emitting unit according to any one of the first to fourth aspects, and an air-conditioning outdoor unit. The unit outside the air conditioning room constitutes a refrigerant circuit together with the unit inside the air conditioning room.

  In this air conditioner, it is possible to both air-condition a target space with different illuminance depending on the time zone and to grasp an abnormality of the illuminance sensor.

It is a schematic block diagram of an air conditioning apparatus. It is a schematic external perspective view of an indoor unit. It is a planar view schematic block diagram of an indoor unit. It is a side view schematic block diagram in the AA cross section of FIG. 3 of an indoor unit. It is a schematic exploded perspective view of a light emitting unit. It is the external appearance schematic perspective view which looked at the upper casing from diagonally downward. It is the external appearance schematic perspective view which looked at the lower casing from diagonally upward. It is the external appearance schematic perspective view which looked at the cover lens from diagonally upward. It is a schematic control block block diagram of an air conditioning apparatus. It is a control flowchart of LED and a buzzer. It is a flowchart of the abnormality determination process of an illumination intensity sensor.

(1) Configuration of Air Conditioner FIG. 1 shows a schematic configuration diagram of an air conditioner 1.

  The air conditioner 1 is a device capable of cooling and heating a room such as a building by performing a vapor compression refrigeration cycle.

  The air conditioner 1 mainly includes an outdoor unit 2, an indoor unit 3, and a liquid refrigerant communication tube 4 and a gas refrigerant communication tube 5 which are refrigerant paths connecting the outdoor unit 2 and the indoor unit 3. Yes. The vapor compression refrigerant circuit 6 of the air conditioner 1 is configured by connecting the outdoor unit 2 and the indoor unit 3 via refrigerant communication tubes 4 and 5. The refrigerant communication pipes 4 and 5 are refrigerant pipes that are constructed on site when the air conditioner 1 is installed at an installation location such as a building. Although not particularly limited, in this embodiment, the refrigerant circuit 6 is filled with R32 as a working refrigerant.

(2) Outdoor unit The outdoor unit 2 is installed outdoors (on the roof of the building, in the vicinity of the wall surface of the building, etc.) and constitutes a part of the refrigerant circuit 6. The outdoor unit 2 mainly includes an accumulator 7, a compressor 8, a four-way switching valve 10, an outdoor heat exchanger 11, an outdoor expansion valve 12 as an expansion mechanism, a liquid side shut-off valve 13, and a gas side shut-off valve. 14, the outdoor fan 15, and the outdoor control unit 72.

  The accumulator 7 is a container for supplying gas refrigerant to the compressor, and is provided on the suction side of the compressor 8.

  The compressor 8 draws in the low-pressure gas refrigerant, compresses it, and discharges the high-pressure gas refrigerant.

  The outdoor heat exchanger 11 functions as a radiator for the refrigerant discharged from the compressor 8 during the cooling operation, and functions as an evaporator for the refrigerant sent from the indoor heat exchanger 51 during the heating operation. . The outdoor heat exchanger 11 has a liquid side connected to the outdoor expansion valve 12 and a gas side connected to the four-way switching valve 10.

  The outdoor expansion valve 12 decompresses the refrigerant radiated in the outdoor heat exchanger 11 during the cooling operation before sending it to the indoor heat exchanger 51, and the refrigerant radiated in the indoor heat exchanger 51 during the heating operation. 11 is an electric expansion valve that can be depressurized before being sent to 11.

  One end of the liquid refrigerant communication tube 4 is connected to the liquid side closing valve 13 of the outdoor unit 2. One end of the gas refrigerant communication pipe 5 is connected to the gas side shut-off valve 14 of the outdoor unit 2.

  Each device and the valve of the outdoor unit 2 are connected by refrigerant pipes 16 to 22.

  The four-way switching valve 10 is in a state where the discharge side of the compressor 8 is connected to the outdoor heat exchanger 11 side and the suction side of the compressor 8 is connected to the gas-side closing valve 14 side (four-way switching valve 10 in FIG. 1). ) And a state in which the discharge side of the compressor 8 is connected to the gas-side closing valve 14 side and the suction side of the compressor 8 is connected to the outdoor heat exchanger 11 side (four-way switching valve 10 in FIG. 1). ) To switch between a cooling operation connection state and a heating operation connection state, which will be described later.

  The outdoor fan 15 is disposed inside the outdoor unit 2 and forms an air flow that sucks outdoor air and supplies the outdoor air to the outdoor heat exchanger 11 and then discharges the air outside the unit. As described above, the outdoor air supplied by the outdoor fan 15 is used as a cooling source or a heating source in heat exchange with the refrigerant of the outdoor heat exchanger 11.

  The outdoor control unit 72 is provided in the outdoor unit 2, and constitutes a part of the control unit 70 by being communicably connected to an indoor control unit 73 described later, and includes a CPU, a ROM, a RAM, and the like. Have. The outdoor control unit 72 controls the drive frequency of the compressor 8, the connection state of the four-way switching valve 10, the valve opening degree of the outdoor expansion valve 12, and the air volume of the outdoor fan 15.

(3) Indoor unit FIG. 2 shows an external perspective view of the indoor unit 3. FIG. 3 is a schematic plan view showing a state where the top plate of the indoor unit 3 is removed. FIG. 4 shows a schematic side cross-sectional view of the indoor unit 3 taken along the line AA in FIG.

  In this embodiment, the indoor unit 3 is a type of indoor unit that is installed by being embedded in an opening provided in a ceiling of a room or the like that is an air-conditioning target space. The indoor unit 3 mainly includes an indoor heat exchanger 51, an indoor fan 52, an indoor casing 30, a flap 39, a bell mouth 33, a drain pan 32, and an indoor control unit 73, and will be described later. A unit 9 is provided.

  The indoor heat exchanger 51 is a heat exchanger that functions as an evaporator for the refrigerant sent from the outdoor heat exchanger 11 during the cooling operation, and functions as a radiator for the refrigerant discharged from the compressor 8 during the heating operation. . The indoor heat exchanger 51 has a liquid side connected to the indoor side end of the liquid refrigerant communication tube 4 and a gas side connected to the indoor side end of the gas refrigerant communication tube 5.

  The indoor fan 52 is a centrifugal blower arranged inside the casing body 31 of the indoor unit 3. The indoor fan 52 sucks indoor air into the indoor casing 30 through a suction port 36 of the decorative panel 35 described later, passes through the indoor heat exchanger 51, and then passes through the outlet 37 of the decorative panel 35 to the outside of the indoor casing 30. Create an air stream that blows out. Thus, the temperature of the indoor air supplied by the indoor fan 52 is adjusted by exchanging heat with the refrigerant in the indoor heat exchanger 51.

  The indoor casing 30 mainly has a casing body 31 and a decorative panel 35.

  The casing main body 31 is disposed so as to be inserted into an opening formed in the ceiling U of the room, which is the air-conditioning target space, and in the plan view, approximately 8 in which long sides and short sides are alternately formed. It is a rectangular box-shaped body, and the lower surface is opened. The casing body 31 includes a top plate and a plurality of side plates extending downward from the peripheral edge of the top plate. Note that bolts (not shown) for fixing the indoor unit 3 to the ceiling are respectively fixed to the short sides of the four corners in the plan view of the casing body 31. In addition, by adjusting the height of the fixing position with respect to the bolts at each of the four corners, it is possible to eliminate a gap between the upper surface of the decorative panel 35 of the indoor unit 3 and the lower surface of the ceiling.

  The decorative panel 35 is disposed so as to be fitted into the opening of the ceiling U, extends to the outside in a plan view than the top plate and the side plate of the casing body 31, and is attached to the lower side of the casing body 31 from the indoor side. It is done. The decorative panel 35 has an inner frame 35a and an outer frame 35b. A substantially quadrangular suction port 36 that opens downward is formed inside the inner frame 35a. A filter 34 for removing dust in the air sucked from the suction port 36 is provided above the suction port 36. An air outlet 37 and a corner air outlet 38 that are opened obliquely downward from below are formed inside the outer frame 35b and outside the inner frame 35a. The blower outlet 37 is provided at a position corresponding to each side of the substantially square shape in a plan view of the decorative panel 35, the first blower outlet 37a, the second blower outlet 37b, the third blower outlet 37c, and the fourth And an air outlet 37d. The corner portion outlets 38 are provided at positions corresponding to four corners of a substantially rectangular shape in plan view of the decorative panel 35, a first corner portion outlet 38a, a second corner portion outlet 38b, and a third corner. A partial outlet 38c and a fourth corner outlet 38d are provided. The outer frame 35b has a substantially rectangular inner edge and outer edge in plan view, and the first corner panel 41, the second corner panel 42, and the third corner panel 43 so as to correspond to each corner. And a fourth corner panel 44. In plan view, the first corner panel 41 is outside the first corner outlet 38a, the second corner panel 42 is outside the second corner outlet 38b, and the third corner panel 43 is the third corner outlet. The fourth corner panel 44 is provided outside the fourth corner portion outlet 38d on the outside of the 38c. Since the shape of each corner panel main body in the 1st-4th corner panels 41-44 is the same, each corner panel 41-44 can change an installation place suitably. In addition, the bolt for fixing the indoor unit 3 with respect to a ceiling is located in the space above the 1st-4th corner panels 41-44, respectively.

  The flap 39 is a member that can change the direction of the air flow passing through the air outlet 37. The flap 39 includes a first flap 39a disposed at the first outlet 37a, a second flap 39b disposed at the second outlet 37b, a third flap 39c disposed at the third outlet 37c, And a fourth flap 39d disposed at the four outlets 37d. Each of the flaps 39a to 39d is pivotally supported at a predetermined position of the indoor casing 30 so as to be rotatable.

  The drain pan 32 is disposed below the indoor heat exchanger 51 and receives drain water generated by condensation of moisture in the air in the indoor heat exchanger 51. The drain pan 32 is attached to the lower part of the casing body 31. The drain pan 32 is formed with a cylindrical space extending in the vertical direction inside the indoor heat exchanger 51 in a plan view, and a bell mouth 33 is disposed below the inside of the space. The bell mouth 33 guides the air sucked from the suction port 36 to the indoor fan 52. Further, the drain pan 32 is formed with a plurality of blowing channels 47a to 47d and corner blowing channels 48a to 48c extending in the vertical direction outside the indoor heat exchanger 51 in plan view. The outlet channels 47a to 47d include a first outlet channel 47a that communicates with the first outlet port 37a at the lower end, a second outlet channel 47b that communicates with the second outlet port 37b at the lower end, and a third outlet port at the lower end. It has the 3rd blowing flow path 47c connected to 37c, and the 4th blowing flow path 47d connected to the 4th blower outlet 37d in a lower end. The corner outlet channels 48a to 48c are, at the lower end, the first corner outlet channel 48a that communicates with the first corner outlet 38a, and the second corner outlet channel that communicates with the second corner outlet 38b at the lower end. It has a channel 48b and a third corner outlet channel 48c communicating with the third corner outlet 38c at the lower end.

  The indoor control unit 73 constitutes a part of the control unit 70 configured to be communicably connected to the outdoor control unit 72 and a light source board 60a of the collective unit 60 and a remote control board 74a of the remote control 74, which will be described later. A CPU, a ROM, a RAM, and the like. The indoor control unit 73 controls the air volume of the indoor fan 52.

(4) Light-Emitting Unit FIG. 5 shows a schematic exploded perspective view of the light-emitting unit 9.

  The light emitting unit 9 is used by being fixed to a ceiling or a wall surface that defines a target space such as a room, and includes a collective unit 60, a human detection sensor 64, a unit casing 90, and the like.

(4-1) Collective unit The collective unit 60 is a unit configured by a plurality of electronic components for detecting the illuminance of the target space and emitting light and / or sound. The light source substrate 60a and the light source substrate 60a An LED 61, an illuminance sensor 62, and a buzzer 63 are provided. The collective unit 60 is accommodated in the unit casing 90.

  The light source board 60a is a control board connected to the indoor control unit 73 located inside the casing body 31 of the indoor unit 3 via an electrical wiring including a communication line and a power supply line, A CPU, a ROM, a RAM, and the like are included. The light source substrate 60a on which the LED 61, the illuminance sensor 62, and the buzzer 63 are mounted is accommodated in a unit casing 90 described later. Note that the LED 61, the illuminance sensor 62, and the buzzer 63 are all mounted on the same light source substrate 60a, so that the substrates can be combined into one and can be made compact.

  The LED 61 is mounted on the lower surface of the light source substrate 60a, and is a light emitting diode that illuminates a target space that is to be air-conditioned by the indoor unit 3. Specifically, the LED 61 is installed so that light emitted downward passes through a light emission opening 85 and a cover lens 90a of the unit casing 90 described later to illuminate the room.

  The illuminance sensor 62 is mounted on the lower surface of the light source substrate 60a, and detects the illuminance of the target space that is to be air-conditioned by the indoor unit 3. Although not particularly limited, the illuminance sensor 62 is configured by, for example, a phototransistor or the like. The illuminance sensor 62 detects light (light) that is indoor light and has passed through a central opening 82 of a unit casing 90 described later.

  The buzzer 63 is mounted on the lower surface of the light source board 60a, and emits sound toward the target space that is to be air-conditioned by the indoor unit 3. Specifically, the buzzer 63 emits a warning sound that repeatedly outputs the same sound at predetermined time intervals. The buzzer 63 is installed so that the sound emitted downward can be transmitted to the room through a central opening 82 of the unit casing 90 described later.

(4-2) Human Detection Sensor The human detection sensor 64 is a sensor that detects the presence or absence of a person in the target space, and is not particularly limited, and is configured by, for example, an infrared camera. The human detection sensor 64 includes a bulge detection unit 64a having a circular shape in plan view that bulges toward the target space. The human detection sensor 64 is accommodated in the unit casing 90 at the same height as the collective unit 60. The bulge detection part 64a of the human detection sensor 64 is provided so as to protrude toward the target space via a lower human detection opening 84 and a lens part human detection opening 81 of the unit casing 90 described later. The human detection sensor 64 is connected to the indoor control unit 73 located inside the casing main body 31 of the indoor unit 3 through an electrical wiring including a communication line and a power supply line.

(4-3) Unit casing The unit casing 90 is a container that accommodates the collective unit 60 and the human detection sensor 64, and includes a cover lens 90a, a lower casing 90b, and an upper casing 90c. In the installed state of the light emitting unit 9, the collective unit 60 and the human detection sensor 64 are sandwiched from above and below by the upper casing 90c from the upper side (ceiling side) and by the lower casing 90b from the lower side (target space side) It is accommodated in the unit casing 90. The cover lens 90a is attached to the lower casing 90b from below, thereby constituting a portion of the light emitting unit 9 on the indoor side.

  FIG. 6 shows a schematic external perspective view of the upper casing 90c as viewed obliquely from below. In FIG. 7, the external appearance schematic perspective view which looked at the lower casing 90b from diagonally upward is shown. FIG. 8 shows a schematic external perspective view of the cover lens 90a as viewed obliquely from above.

  The upper casing 90c is a translucent resin casing for installing the light emitting unit 9 on the ceiling while covering the collective unit 60 and the human detection sensor 64 from above. The upper casing 90c has an upper casing body 93, a wiring opening 91, a first fixing screw hole 95a, and a second fixing screw hole 95b. The upper casing body 93 has a top surface 93a and an upper side surface 93b. The top surface 93 a is a plate-like member having a substantially rectangular shape in plan view, and constitutes the upper end surface of the light emitting unit 9. The upper side surface 93 b extends from the peripheral edge of the top surface 93 a so as to spread obliquely downward, and constitutes the upper side surface of the light emitting unit 9. The wiring opening 91 is an opening formed so as to penetrate in the plate thickness direction which is the vertical direction near the back surface of the top surface 93 a, and is an opening through which the electric wiring extending from the collective unit 60 and the human detection sensor 64 passes. The first fixing screw hole 95a and the second fixing screw hole 95b are provided at positions separated from each other on the opposite side (front side) of the top surface 93a to the side on which the wiring opening 91 is provided. This is an opening formed so as to penetrate in the plate thickness direction, which is a direction, and is an opening for fixing the upper casing 90c and the light emitting unit 9 to a wall surface such as a ceiling by inserting a screw (not shown). In addition, in the wall corresponding to the position where the wiring opening 91 is provided in the wall such as the ceiling where the light emitting unit 9 is constructed, a hole is made so that the collective unit 60 or The electrical wiring extending from the human detection sensor 64 is drawn.

  The lower casing 90b is a translucent resin casing that covers the collective unit 60 and the human detection sensor 64 from below and accommodates them inside. The lower casing 90b has a lower casing body 83 that extends substantially horizontally, a central opening 82, a lower person detection opening 84, a light emission opening 85, and a light emission path surface 85a. The lower casing body 83 has a shape corresponding to the contour of the upper casing 90c in plan view. The lower casing body 83 has a main surface 83a and a lower side surface 83b. The main surface 83a is a plate-like member having a substantially rectangular shape in plan view, and spreads in a substantially horizontal direction. The lower side surface 83b slightly extends upward from the peripheral edge of the main surface 83a. Although not described in detail, the lower casing 90b and the upper casing 90c have a shape relationship that can be fitted to each other. The central opening 82 is an opening penetrating vertically in the vicinity of the center of the main surface 83a of the lower casing body 83 in plan view. Below the central opening 82 is provided a cylindrical central opening wall surface 82a formed so as to expand downward. In the central opening 82, the illuminance sensor 62 and the buzzer 63 are located above the central opening 82 in a state where the collective unit 60 is installed. The lower person detection opening 84 is an opening that is provided at a position different from the central opening 82 in a plan view of the main surface 83a of the lower casing body 83 and penetrates in the vertical direction. When the human detection sensor 64 is disposed at the predetermined position 64S of the lower casing 90b, the bulge detection portion 64a of the human detection sensor 64 is positioned in the lower human detection opening 84. The light emission opening 85 is provided on the opposite side of the central opening 82 from the lower human detection opening 84 side in a plan view of the main surface 83a of the lower casing body 83, and is an opening penetrating in the vertical direction. When the collective unit 60 is disposed at the predetermined position 60S of the lower casing 90b, the LED 61 is positioned above the light emitting opening 85, and the illuminance sensor 62 and the buzzer 63 are positioned above the central opening 82. The light emission path surface 85a is a cylindrical portion that is formed so as to expand downward toward the lower side of the light emission opening 85.

  The cover lens 90a is a transparent resin lens that is fixed to the lower surface of the lower casing 90b. The cover lens 90a has a cover lens body 80 that spreads substantially horizontally, a lens portion human detection opening 81, a lens fixing projection 80a, and a lens fixing claw 80b. The cover lens body 80 has a shape corresponding to the contour of the lower surface of the main surface 83a of the lower casing 90b in plan view. The lens portion human detection opening 81 is formed in the cover lens main body 80 by opening a portion corresponding to the bulging detection portion 64a of the human detection sensor 64 in the plate thickness direction. The lens fixing protrusions 80 a are provided so as to protrude upward at the four corners of the cover lens body 80. The lens fixing claw 80b is a claw provided so as to protrude upward from the outside of the lens part human detection opening 81 of the cover lens main body 80 and the opposite end thereof. The cover lens 90a is fixed to the lower casing 90b via a lens fixing protrusion 80a and a lens fixing claw 80b.

(5) Remote control FIG. 9 shows a control block diagram of the air conditioner 1.

  A remote controller 74 is provided in a target space in which the indoor unit 3 performs air conditioning.

  The remote controller 74 is communicably connected to the outdoor control unit 72 and the indoor control unit 73, and includes a remote control board 74a having a CPU, ROM, RAM, etc., an input unit 74b, a display 74c, and a remote control memory 74d. Have. In addition, the remote controller 74 includes a timer (not shown) and can grasp the date and time.

  The input unit 74b receives various settings from the user.

  The display 74c can output a display of the operating state of the air conditioner 1, the set temperature, various abnormal states, and the like.

  The remote controller memory 74d stores a plurality of types of reference illuminance information serving as a comparison reference for determining an abnormality of the illuminance sensor 62 described later. Specifically, reference illuminance that differs depending on the orientation of the lighting surface (east, west, north, and south) and the size of the lighting surface, which is basic information of the target space, is stored depending on the season and time zone. .

(6) Control part The air conditioning apparatus 1 has the control part 70 comprised by the outdoor control part 72, the remote control board 74a, the indoor control part 73, and the light source board | substrate 60a.

  Specifically, the outdoor control unit 72 is connected so that the compressor 8, the four-way switching valve 10, the outdoor expansion valve 12, the outdoor fan 15, and the like can be controlled. The indoor control unit 73 can receive signals from the human detection sensor 64 and various signals from the light source board 60a, and is connected so that the indoor fan 52 can be controlled. The light source substrate 60a can receive a signal from the illuminance sensor 62 and is connected so that the LED 61, the buzzer 63, and the like can be controlled. The remote control board 74a is capable of receiving signals from the input unit 74b and is connected to the display 74c so that various display outputs are possible.

  Various control operations and information processing of the air conditioner 1 are executed by the control unit 70.

(7) Operation | movement of an air conditioning apparatus Next, operation | movement of the air conditioning apparatus 1 is demonstrated using FIG. In the air conditioner 1, in the cooling operation in which the refrigerant flows in the order of the compressor 8, the outdoor heat exchanger 11, the outdoor expansion valve 12, and the indoor heat exchanger 51, the compressor 8, the indoor heat exchanger 51, the outdoor expansion valve 12, A heating operation in which the refrigerant flows in the order of the outdoor heat exchanger 11 is performed.

(7-1) Cooling Operation During the cooling operation, the connection state of the four-way selector valve 10 is switched so that the outdoor heat exchanger 11 becomes a refrigerant radiator and the indoor heat exchanger 51 becomes a refrigerant evaporator (FIG. (See solid line 1). In the refrigerant circuit 6, the low-pressure gas refrigerant in the refrigeration cycle is sucked into the compressor 8 and is compressed until it reaches the high pressure in the refrigeration cycle, and then discharged. The high-pressure gas refrigerant discharged from the compressor 8 is sent to the outdoor heat exchanger 11 through the four-way switching valve 10. The high-pressure gas refrigerant sent to the outdoor heat exchanger 11 dissipates heat by exchanging heat with outdoor air supplied as a cooling source by the outdoor fan 15 in the outdoor heat exchanger 11 that functions as a refrigerant radiator. Become a high-pressure liquid refrigerant. This high-pressure liquid refrigerant is decompressed to a low pressure in the refrigeration cycle when passing through the outdoor expansion valve 12, becomes a gas-liquid two-phase refrigerant, through the liquid-side closing valve 13 and the liquid refrigerant communication pipe 4, It is sent to the indoor unit 3.

  The low-pressure gas-liquid two-phase refrigerant evaporates in the indoor heat exchanger 51 by exchanging heat with indoor air supplied as a heating source by the indoor fan 52 during the cooling operation. Thereby, the air which passes the indoor heat exchanger 51 is cooled, and indoor cooling is performed. The low-pressure gas refrigerant evaporated in the indoor heat exchanger 51 is sent to the outdoor unit 2 through the gas refrigerant communication pipe 5.

  The low-pressure gas refrigerant sent to the outdoor unit 2 is again sucked into the compressor 8 through the gas-side closing valve 14, the four-way switching valve 10 and the accumulator 7. In the cooling operation, the refrigerant circulates through the refrigerant circuit 6 as described above.

(7-2) Heating Operation During the heating operation, the connection state of the four-way selector valve 10 is switched so that the outdoor heat exchanger 11 serves as a refrigerant evaporator and the indoor heat exchanger 51 serves as a refrigerant radiator (FIG. 1). In the refrigerant circuit 6, the low-pressure gas refrigerant in the refrigeration cycle is sucked into the compressor 8 and is compressed until it reaches the high pressure in the refrigeration cycle, and then discharged. The high-pressure gas refrigerant discharged from the compressor 8 is sent to the indoor unit 3 through the four-way switching valve 10, the gas side closing valve 14, and the gas refrigerant communication pipe 5.

  In the indoor heat exchanger 51, the high-pressure gas refrigerant exchanges heat with indoor air supplied as a cooling source by the indoor fan 52, and dissipates heat to become a high-pressure liquid refrigerant. Thereby, the air which passes the indoor heat exchanger 51 is heated, and indoor heating is performed. The high-pressure liquid refrigerant radiated by the indoor heat exchanger 51 is sent to the outdoor unit 2 through the liquid refrigerant communication tube 4.

  The high-pressure liquid refrigerant sent to the outdoor unit 2 is depressurized to the low pressure of the refrigeration cycle in the outdoor expansion valve 12 through the liquid-side closing valve 13, and becomes a low-pressure gas-liquid two-phase refrigerant. The low-pressure gas-liquid two-phase refrigerant decompressed by the outdoor expansion valve 12 exchanges heat with outdoor air supplied as a heating source by the outdoor fan 15 in the outdoor heat exchanger 11 that functions as a refrigerant evaporator. Evaporates into a low-pressure gas refrigerant. The low-pressure gas refrigerant is again sucked into the compressor 8 through the four-way switching valve 10 and the accumulator 7. In the heating operation, the refrigerant circulates through the refrigerant circuit 6 as described above.

(8) Normal Control of LED and Buzzer FIG. 10 shows a normal control flowchart of the LED 61 and the buzzer 63.

  In step S10, the indoor control unit 73 determines whether or not a predetermined time condition is satisfied. The predetermined time condition is not particularly limited. For example, the predetermined time condition can be a predetermined time zone of the day, and is stored in advance in a memory or the like included in the indoor control unit 73. Note that the user can set the predetermined time condition via the input unit 74 b of the remote controller 74. As a result, the lighting of the LED 61 and the output of the warning sound from the buzzer 63 can be performed only in a specific time zone, and the crime prevention effect in the specific time zone can be obtained. If it is determined that the predetermined time condition is satisfied, the process proceeds to step S11. If it is determined that the predetermined time condition is not satisfied, step S10 is repeated.

  In step S11, the indoor control unit 73 determines whether the indoor illuminance is equal to or less than a predetermined illuminance. Specifically, the indoor control unit 73 determines the illuminance value detected by the illuminance sensor 62 via the light source substrate 60a and compares the illuminance value with a predetermined illuminance. If it is determined that it is less than the predetermined illuminance (dark), the process proceeds to step S12. If it is determined that it is not less than the predetermined illuminance (not dark), step S10 is repeated.

  In step S12, the indoor control unit 73 determines whether there is a person in the room. Specifically, the indoor control unit 73 receives a detection signal from the human detection sensor 64 to determine whether there is a person in the room. If it is determined that there is no person, the process proceeds to step S13. If it is determined that no person exists, the process returns to step S10.

  In step S13, the indoor control unit 73 determines that the light emission conditions at the time of control (steps S10 to S12) are satisfied, and transmits a signal for causing the LED 61 to emit light and a signal for causing the buzzer 63 to emit a warning sound. Specifically, the indoor control unit 73 transmits a control signal for causing the LED 61 to emit light toward the light source substrate 60a, and transmits a control signal so that the buzzer 63 emits a warning sound. As a result, the light source substrate 60 a that has received the control signal controls the LED 61 and the buzzer 63 so that the LED 61 emits light and the buzzer 63 emits a warning sound.

  In step S14, the indoor control unit 73 determines whether the illuminance detected by the illuminance sensor 62 has changed. Specifically, the indoor control unit 73 determines whether or not the illuminance detected by the illuminance sensor 62 has changed before and after transmitting a control signal for causing the LED 61 to emit light in step S13. If it is determined that the illuminance detected by the illuminance sensor 62 has changed, the process proceeds to step S16. If it is determined that the illuminance has not changed, the process proceeds to step S15.

  In step S15, the indoor control unit 73 determines that the LED 61 is abnormal, and causes the display 74c of the remote controller 74 to display and output a predetermined abnormality code indicating that the LED 61 is abnormal.

  In step S <b> 16, the indoor control unit 73 determines whether or not a predetermined time has elapsed since the control signal is transmitted so that the LED 61 emits light and the buzzer 63 emits a warning sound. Here, although it does not specifically limit as predetermined time, For example, it can be set as predetermined time length of 1 minute or more and less than 5 minutes. If it is determined that the predetermined time has elapsed, the process proceeds to step S17. If it is determined that the predetermined time has not elapsed, the light emission of the LED 61 and the output of the warning sound from the buzzer 63 are continued until the predetermined time has elapsed. .

  In step S17, the indoor control unit 73 stops the light emission of the LED 61, stops the warning sound from the buzzer 63, returns to step S10, and repeats the above processing.

(9) Illuminance Sensor Abnormality Determination Processing FIG. 11 shows a flowchart of the illuminance sensor 62 abnormality determination processing.

  In step S20, the indoor control unit 73 receives basic information on the target space from the user via the input unit 74b of the remote controller 74. Specifically, information such as the orientation of the lighting surface of the target space where the light emitting unit 9 is constructed, the size of the lighting surface, and the like is received.

  In step S <b> 21, the indoor control unit 73 determines whether a predetermined determination execution condition for an abnormality of the illuminance sensor 62 is satisfied. The determination execution condition is not particularly limited. For example, the determination execution condition may be a time point when a predetermined period is reached, or a time point when the LED 61 has been turned on for a predetermined time, via the input unit 74b of the remote controller 74. Can be set. When the predetermined determination execution condition is satisfied, the process proceeds to step S22.

  In step S22, the indoor control unit 73 sets the season when the predetermined determination execution condition is satisfied in step S21, and a plurality of times (for example, the first time that is the time when the predetermined determination execution condition is satisfied) A second time that is advanced by a predetermined time (for example, 10 hours) within 24 hours from the time (first time) is specified. Specifically, the indoor control unit 73 specifies the season and time using the date / time grasping function of the remote controller 74.

  In step S23, the indoor control unit 73 determines the basic information of the target space received in step S20, the season specified in step S22, and each of the seasons from the plurality of types of reference illuminance information stored in the remote controller memory 74d of the remote controller 74. The reference illuminance information corresponding to the time is selected for each time (in the above example, the basic information of the target space, the season, the reference illuminance information corresponding to the first time, the basic information of the target space, the season, And the reference illuminance information corresponding to two times).

  In step S24, the indoor control unit 73 grasps the detected illuminance of the illuminance sensor 62 at each of the plurality of times grasped in step S22. The indoor control unit 73 preferably ensures that the LED 61 is not lit when grasping the detected illuminance of the illuminance sensor 62 here.

  In step S25, the indoor control unit 73 compares the detected illuminance at each of a plurality of times of the illuminance sensor 62 grasped at step S24 with the reference illuminance at each of the plurality of times selected in step S23, and whether the difference is small. Judge whether or not. Specifically, the indoor control unit 73 determines whether the magnitude of the difference between the detected illuminance of the illuminance sensor 62 and the selected reference illuminance is not more than a predetermined value for each time. If it is determined that the difference between the detected illuminance of the illuminance sensor 62 and the selected reference illuminance is large, the process proceeds to step S26, and if it is determined that the difference is small, the process proceeds to step S27. .

  In step S26, the indoor control unit 73 determines that the illuminance sensor 62 is abnormal and causes the display 74c of the remote controller 74 to display and output a predetermined abnormality code indicating that the illuminance sensor 62 is abnormal.

  In step S27, the indoor control unit 73 determines that the illuminance sensor 62 is normal, and waits until the next determination execution time.

(10) Features (10-1)
In the air conditioner 1 including the light emitting unit 9 of the present embodiment and the indoor unit 3 having the light emitting unit 9, in the abnormality determination process of the illuminance sensor 62, the detected illuminance of the illuminance sensor 62 at a plurality of times and the reference illuminance at the plurality of times. And comparing. For this reason, even when the light emitting unit 9 is used in a target space whose illuminance changes according to time, it is possible to grasp whether or not the illuminance that should be detected by the light emitting unit 9 can be detected. Therefore, the abnormality of the illuminance sensor 62 can be grasped.

  Thereby, since the abnormality of the illuminance sensor 62 can be grasped, for example, it is possible to avoid the LED 61 from being lit even though it is unnecessary in a relatively bright time zone such as daytime.

(10-2)
In the air conditioner 1 including the light emitting unit 9 of the present embodiment and the indoor unit 3 having the light emitting unit 9, the light emitting unit 9 is constructed from a plurality of types of reference illuminance when the abnormality determination process of the illuminance sensor 62 is performed. The information corresponding to the basic information (direction, area, etc. of the lighting surface) of the target space is selected and used for comparison with the detected illuminance of the illuminance sensor 62. For this reason, the abnormality of the illuminance sensor 62 can be grasped more accurately.

(10-3)
In the air conditioner 1 including the light emitting unit 9 of the present embodiment and the indoor unit 3 having the light emitting unit 9, when performing the abnormality determination process of the illuminance sensor 62, the determination process is performed from among a plurality of types of reference illuminance. The standard illuminance that takes into account information about the season is selected for comparison. For this reason, the difference in the angle of sunlight from the sun according to the season can be reflected in the reference illuminance, and the abnormality of the illuminance sensor 62 can be grasped more accurately.

(10-4)
In the air conditioner 1 of the present embodiment, the light emitting unit 9 is provided in the indoor unit 3. For this reason, it becomes possible not only to grasp the abnormality of the illuminance sensor 62 of the light emitting unit 9 provided in the target space where the illuminance changes according to the time zone, but also because the illuminance varies depending on the time zone, It is also possible to adjust the temperature of the target space where the angle can change.

(10-5)
In the air conditioner 1 including the light emitting unit 9 of this embodiment and the indoor unit 3 having the light emitting unit 9, the abnormality of the illuminance sensor 62 is displayed on the display 74 c of the remote controller 74. Thereby, a builder can grasp | ascertain abnormality easily.

(11) Modification (11-1) Modification A
In the above-described embodiment, the case where the result of abnormality determination of the illuminance sensor 62 is output as an abnormality code on the display 74c of the remote controller 74 has been described as an example.

  On the other hand, the target for displaying and outputting the result of the abnormality determination of the illuminance sensor 62 is not limited to the remote controller 74. For example, when the indoor unit 3 or the outdoor unit 2 includes a display output unit, the display output is performed. You may make it output in a part.

(11-2) Modification B
In the above embodiment, the case where the indoor control unit 73 mainly performs the abnormality determination of the illuminance sensor 62 has been described as an example.

  However, the light source substrate 60a may perform the abnormality determination of the illuminance sensor 62 instead of the indoor control unit 73. In this case, the light source board 60 a reads various information stored in the remote control memory 74 d of the remote controller 74, performs determination processing in the same manner as in the above embodiment, and the light source board 60 a transmits various notification signals to the remote controller 74. It is transmitted to the display 74c or the like.

(11-3) Modification C
In the above embodiment, a plurality of types of reference illuminance are stored in advance in the remote control memory 74d of the remote controller 74, and those corresponding to the basic information of the target space and the season and time for determination from among the plurality of types of reference illuminance. The case where an abnormality of the illuminance sensor 62 is determined by selecting and comparing the detected illuminance with the illuminance sensor 62 has been described as an example.

  On the other hand, the reference illuminance information for comparison with the illuminance detected by the illuminance sensor 62 may allow a user to input a specific numerical value via the input unit 74b of the remote controller 74, for example. In addition, the light emitting unit 9 itself may be provided with a reception unit that can receive such numerical input. Thereby, the user can input an approximate value of the illuminance at the site grasped by his / her own visual sense and compare it with the detected illuminance of the illuminance sensor 62.

(11-4) Modification D
In the above embodiment, the case where the reference illuminance according to the season is used as the plurality of types of reference illuminance has been described as an example.

  On the other hand, the reference illuminance according to the sunrise time and / or sunset time may be used instead of the reference illuminance according to the season.

  Although the embodiments and modifications of the present disclosure have been described above, it is understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure described in the claims. Will.

1 Air conditioner 2 Outdoor unit (air conditioning outdoor unit)
3 Indoor unit (air conditioning indoor unit)
6 Refrigerant circuit 9 Light emitting unit 11 Outdoor heat exchanger 35 Cosmetic panel 51 Indoor heat exchanger 55 Human detection sensor 60 Collective unit 60a Light source substrate (control unit)
61 LED (light source)
62 Illuminance sensor 63 Buzzer 70 Control unit 72 Outdoor control unit 73 Indoor control unit (control unit)
74 Remote control 74a Remote control board 74c Display

JP, 2015-210934, A

Claims (5)

A light source unit (61);
An illuminance sensor (62) for detecting the illuminance of the target space illuminated by the light source unit;
A control unit (60a, 73, 70) for causing the light source unit to emit light according to a detection result of the illuminance sensor;
With
The controller determines an abnormality of the illuminance sensor based on a predetermined reference illuminance for a plurality of time zones in the target space and a detection result of the illuminance sensor;
Light emitting unit (9). The controller determines an abnormality of the illuminance sensor using the reference illuminance selected based on a predetermined condition from a plurality of types of the reference illuminance.
The light emitting unit according to claim 1. A reception unit that receives an input of the reference illuminance;
The light emitting unit according to claim 1 or 2. The control unit determines an abnormality of the illuminance sensor using the reference illuminance reflecting a difference in illuminance due to at least one of seasonal information, sunrise time information, and sunset time information.
The light emitting unit according to any one of claims 1 to 3. An air-conditioning indoor unit (3) provided with the light emitting unit (9) according to any one of claims 1 to 4,
An air conditioning outdoor unit (2) that constitutes a refrigerant circuit (6) together with the air conditioning indoor unit;
An air conditioner (1) comprising:

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