JP6575614B2 - Light emitting unit and air conditioner - Google Patents

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.

  According to the luminaire, in order to eliminate the problem of chattering of turning on and off of the light source caused by light from the light source entering the illuminance sensor, a light shielding wall is provided between the light source and the illuminance sensor. Has been proposed.

  In such a lighting fixture, an abnormality may occur in the illuminance sensor for some reason, and the detected illuminance of the illuminance sensor may not be used in the light emission control of the light source.

  The present disclosure has been made in view of the above-described points, and a problem in the present disclosure is to determine at least one of an abnormality of the illuminance sensor and an abnormality that the illuminance sensor is dirty or foreign matter exists in the light emission path. An object of the present invention is to provide a light emitting unit and an air conditioner that can be used.

The light emitting unit according to the first aspect includes a light emitting unit, one illuminance sensor, and an abnormality determining unit. The light emitting unit emits light toward the target space. The illuminance sensor detects the illuminance of the target space. The abnormality determination unit distinguishes between the abnormality of the illuminance sensor and the abnormality that the illuminance sensor is dirty or foreign matter is present in the light emission path based on the detection result of one illuminance sensor with respect to the light emission of the light emitting unit.

  Note that the light emission path is not particularly limited, and is a case where the illuminance sensor can detect light emitted from the light emitting unit, passing through the space inside the light emitting unit, and not reaching the outside of the light emitting unit. Can be a space between the light emitting unit and the illuminance sensor in the light emitting unit, and the light emitted from the light emitting unit illuminates the target space by reaching the target space outside the light emitting unit When light is detected by the illuminance sensor, the space through which the light from the light emitting unit passes before reaching the target space outside the light emitting unit or the space between the illuminance sensor and the target space outside the light emitting unit Or at least one of the spaces.

In this light emitting unit, by judging the detection result of the illuminance sensor by causing the light emitting unit to emit light, it is possible to discriminate between the abnormality of the illuminance sensor and the abnormality that the illuminance sensor is dirty or foreign matter exists in the light emission path. Is possible.

  The light emitting unit according to the second aspect is the light emitting unit according to the first aspect, and includes a condition that the illuminance detected by the illuminance sensor is equal to or less than a predetermined value or lower than a predetermined value as a condition for the light emitting unit to emit light .

  In addition, the condition that the illuminance detected by the illuminance sensor is equal to or lower than the predetermined value or lower than the predetermined value is included as a condition for the light emitting unit to emit light after the abnormality determination unit determines whether the illuminance sensor is abnormal. Is preferred.

  In this light emitting unit, it is possible to cause the light emitting unit to emit light when the illuminance of the target space is equal to or lower than a predetermined value or lower than a predetermined value.

  The light emitting unit according to the third aspect is the light emitting unit according to the first aspect or the second aspect, and the light emitting unit emits light at the start of power supply. The abnormality determining unit determines an abnormality of the illuminance sensor based on a detection result of the illuminance sensor with respect to light emission of the light emitting unit at the start of power supply.

  In this light emitting unit, since the light emitting unit always emits light when the power supply is started, it is possible to grasp the abnormality of the illuminance sensor from the beginning of construction.

  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 further includes a housing portion. The accommodating portion accommodates the light emitting portion and the illuminance sensor inside. The illuminance sensor is disposed at a position where the light emitted from the light emitting unit reaches through the space in the housing unit.

  In this light emitting unit, since the illuminance sensor can directly receive the light emitted from the light emitting unit through the space in the housing unit, it is possible to improve the determination accuracy of the abnormality of the illuminance sensor.

  The light emitting unit according to the fifth aspect is the light emitting unit according to any one of the first aspect to the fourth aspect, and the abnormality determination unit is configured such that the illuminance detected by the illuminance sensor does not change according to the light emission of the light emitting unit. The illuminance detected by the illuminance sensor is changed according to the light emission of the light emitting unit, and the illuminance detected by the illuminance sensor is determined to be distinguished from the case where the predetermined illuminance condition is satisfied.

  In this light emitting unit, it is possible to distinguish and grasp an abnormality of the illuminance sensor and an abnormality other than the illuminance sensor.

  An air conditioner according to a sixth aspect includes an indoor unit having a light emitting unit according to any one of the first to fifth aspects, an outdoor unit, and a controller. The notification unit that notifies the determination result by the abnormality determination unit is provided in any of the indoor unit, the outdoor unit, and the controller.

  In this air conditioner, any of the indoor unit, the outdoor unit, and the controller is provided with a notification unit that notifies the determination result by the abnormality determination unit, so that the determination result by the abnormality determination unit can be easily grasped. become.

  The air conditioning apparatus which concerns on a 7th viewpoint is an air conditioning apparatus which concerns on a 6th viewpoint, Comprising: An alerting | reporting part is a display. On the display, an abnormality of the illuminance sensor and an abnormality that the illuminance sensor is dirty or foreign matter exists in the light emission path are displayed as different codes.

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 bottom view schematic block diagram of a 4th corner panel. It is a top view schematic block diagram of the state from which the cover of the 4th corner panel was removed. It is a top view schematic block diagram of a 4th corner panel. It is sectional drawing in the arrow of the BB cross section of FIG. 5 of a 4th corner panel. It is sectional drawing in the arrow view of CC cross section of FIG. 5 of a 4th corner panel. It is a control block block diagram of an air conditioning apparatus. It is a normal control flowchart of LED and a buzzer. It is an abnormality determination flowchart of an illuminance 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, a casing 30, a flap 39, a bell mouth 33, a drain pan 32, and an indoor control unit 73.

  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 casing 30 through a suction port 36 of the decorative panel 35 described later, passes through the indoor heat exchanger 51, and then blows out of the casing 30 through the outlet 37 of the decorative panel 35. Create an air flow. 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 casing 30 mainly includes a casing body 31 and a decorative panel 35.

  The casing main body 31 is arranged so as to be inserted into an opening formed in the ceiling U of the air conditioning room, and is a substantially octagonal box in which long sides and short sides are alternately formed in a plan view. The lower surface is open. 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 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 by being communicably connected to the outdoor control unit 72 and a corner substrate 60 described later, and includes a CPU, a ROM, a RAM, and the like. The indoor control unit 73 controls the air volume of the indoor fan 52.

(4) Second Corner Panel The second corner panel 42 includes a human detection sensor 55 in the vicinity of the panel center.

  Although the human detection sensor 55 is not specifically limited, For example, it is comprised by the infrared camera etc., and is connected with the indoor control part 73 so that communication is possible.

(5) Fourth Corner Panel FIG. 5 is a schematic diagram of the fourth corner panel 44 viewed from the bottom, FIG. 6 is a schematic diagram of the top corner when the cover of the fourth corner panel 44 is removed, and FIG. A schematic top view of the four-corner panel 44 is shown. 8 is a cross-sectional view of the fourth corner panel 44 taken along the line B-B in FIG. 5. FIG. 9 is a cross-sectional view taken along the line CC of FIG. 5 in the fourth corner panel 44. Are shown respectively.

  The fourth corner panel 44 is a corner panel diagonally positioned with respect to the second corner panel 42 in plan view, and includes a corner panel body 81, a light emitting lens 82, an illuminance lens 83, and an attachment member 84. , A cover 85 and a corner substrate 60.

  The corner panel main body 81 is a substantially L-shaped plate-like member in plan view, like the first to third corner panels 41 to 43, and has a light emitting opening 81a and an illuminance opening penetrating in the vertical direction that is the thickness direction. 81b and a buzzer opening 81c are provided. The light emitting opening 81a is provided in the vicinity of the center of gravity of the corner panel body 81, and a light emitting lens 82 is attached to the indoor side. The illuminance opening 81b is provided adjacent to the light emission opening 81a, and an illuminance lens 83 is attached to the indoor side. The buzzer opening 81c is provided closer to the center of the indoor unit 3 in plan view than the light emission opening 81a.

  The attachment member 84 is a member interposed between the corner substrate 60 and the corner panel body 81 in order to attach the corner substrate 60 to the corner panel body 81. The attachment member 84 is fixed to the corner panel main body 81 by screws 84x.

  The cover 85 is a member that further covers the corner substrate 60 from above, and is fixed to the corner panel body 81 by screws 85x.

  The corner board 60 is composed of a plurality of electronic components, and is a control board communicably connected to the indoor control unit 73 located inside the casing body 31 of the indoor unit 3. The corner board 60 includes an LED 61 and an illuminance sensor 62. And a buzzer 63 are provided. Specifically, the corner substrate 60 is configured to include a CPU, a ROM, a RAM, and the like, and is connected to the indoor control unit 73 via a communication line and a power supply line, and from the indoor control unit 73 via the power supply line. Thus, communication with the indoor control unit 73 is possible via the communication line while receiving power supply. The corner substrate 60 on which the LED 61, the illuminance sensor 62, and the buzzer 63 are mounted is disposed in a housing portion 86 that is a space surrounded by the corner panel body 81, the attachment member 84, and the cover 85. Note that the LED 61, the illuminance sensor 62, and the buzzer 63 are all mounted on the same corner substrate 60, and the number of the substrates is one, so that the size can be reduced.

  LED61 is mounted in the lower surface of the corner board | substrate 60, and illuminates the object space which the indoor unit 3 makes into air conditioning object. Specifically, in the LED 61, light emitted downward passes through the corresponding opening of the mounting member 84, the light emitting opening 81a provided in the corner panel body 81, and the light emitting lens 82, It is installed to illuminate the room.

  The illuminance sensor 62 is mounted on the lower surface of the corner substrate 60, 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 from the room through the illuminance lens 83, the illuminance opening 81 b provided in the corner panel main body 81, and the corresponding openings of the mounting member 84. The illuminance sensor 62 and the LED 61 are light emitted by the LED 61 and passed through a space opposite to the indoor space side with respect to the corner panel body 81 as indicated by a two-dot chain line arrow in FIG. Is arranged so that light can be received. Specifically, in the present embodiment, the light emitted from the LED 61 travels in a substantially horizontal direction through the space above the mounting member 84 and below the corner substrate 60 to reach the illuminance sensor 62. In the internal structure of the fourth corner panel 44, a member that blocks between the LED 61 and the illuminance sensor 62 does not exist.

  The buzzer 63 is mounted on the lower surface of the corner substrate 60, 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 passes through the corresponding opening of the mounting member 84 and the buzzer opening 81c provided in the corner panel body 81 and is transmitted to the room.

(6) Remote control FIG. 10 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, and the like, an input unit 74b, and a display 74c.

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

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

(7) Control Unit The air conditioning apparatus 1 includes a control unit 70 that includes an outdoor control unit 72, a remote control board 74a, an indoor control unit 73, and a corner board 60.

Specifically, the outdoor control unit 72 is connected so as to be able to control the compressor 8, the four-way switching valve 10, the outdoor expansion valve 12, the outdoor fan 15, and the like. The corner board 60 can receive a signal from the illuminance sensor 62 and can control the LED 61, the buzzer 63, and the like so that the signal from the sensor 55 can be received and the indoor fan 52 can be controlled. The remote control board 74a is connected so as to be able to receive signals from the input unit 74b and to perform various display outputs on the display 74c.
Yes.

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

(8) 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.

(8-1) Cooling Operation During the cooling operation, the connection state of the four-way switching 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.

(8-2) 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 (see 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.

(9) LED and Buzzer Control FIG. 11 shows a normal control flowchart of the LED 61 and the buzzer 63.

  In the normal control of the LED 61 and the buzzer 63, after the abnormality determination of the illuminance sensor 62 shown in FIG. 12 to be described later is finished, there is no abnormality in the illuminance sensor 62, the illuminance sensor 62 is dirty, This is performed after it has been confirmed that there is no abnormality that foreign matter exists in the light emission path.

  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. If it is determined that the predetermined time condition is satisfied, the process proceeds to step S12. 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 corner substrate 60 and compares the illuminance value with a predetermined illuminance. If it is determined that the illumination intensity is less than or equal to the predetermined illuminance (dark), the process proceeds to step S12.

  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 55 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 S <b> 13, the indoor control unit 73 performs control so that the LED 61 emits light and a warning sound is emitted from the buzzer 63. Specifically, the indoor control unit 73 causes the LED 61 to emit light toward the corner substrate 60 and transmits a control signal so that a warning sound is emitted from the buzzer 63. Thus, the corner substrate 60 that has received the control signal controls the LED 61 and the buzzer 63 so that the LED 61 emits light and a warning sound is emitted from the buzzer 63.

  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 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 S <b> 16, the indoor control unit 73 determines whether or not a predetermined time has elapsed since the LED 61 is caused to emit 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.

(10) Abnormality determination of illuminance sensor FIG. 12 shows an abnormality determination flowchart of the illuminance sensor 62.

  Whether or not the illuminance sensor 62 is in a state in which the illuminance sensor 62 can perform a desired detection after the air conditioning apparatus 1 is installed on site and before the normal control flowchart of the LED 61 and the buzzer 63 illustrated in FIG. 11 is executed. An abnormality determination process is performed to confirm whether or not. Specifically, when energizing the indoor unit 3 with the indoor unit 3 installed, the state of the illuminance sensor 62 is confirmed by causing the LED 61 to emit light according to the following procedure. . 9, the light emitted from the LED 61 has a structure that can be received by the illuminance sensor 62 inside the fourth corner panel 44, as indicated by the two-dot chain line arrow.

  In step S <b> 20, the indoor control unit 73 determines whether power supply to the LED 61 and the illuminance sensor 62 has been started. Specifically, the indoor control unit 73 determines that power supply to the LED 61 and the illuminance sensor 62 is started via the indoor control unit 73 and the corner substrate 60 when energization is started. Here, when the power supply to the LED 61 and the illuminance sensor 62 is started, the process proceeds to step S21, and when the power supply is not started, the above process is repeated until the power supply is started.

  In step S21, the indoor control unit 73 causes the LED 61 to emit light. Specifically, the indoor control unit 73 causes the LED 61 to emit light by transmitting a control command for causing the LED 61 to emit light to the corner substrate 60.

  In step S22, the indoor control unit 73 determines whether or not 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 the LED 61 is caused to emit light in step S21. If it is determined that the illuminance detected by the illuminance sensor 62 has changed, the process proceeds to step S24. If it is determined that the illuminance has not changed, the process proceeds to step S23.

  In step S23, 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 S24, the indoor control unit 73 determines whether or not the illuminance detected by the illuminance sensor 62 satisfies a predetermined low illuminance condition. Specifically, the indoor control unit 73 has a predetermined low illuminance condition in which the illuminance detected by the illuminance sensor 62 after the LED 61 is caused to emit light in step S21 is less than the original illuminance obtained when the LED 61 is caused to emit light. Is satisfied (in this embodiment, whether it is smaller than a predetermined low illuminance value). If it is determined that the illuminance detected by the illuminance sensor 62 satisfies the predetermined low illuminance condition, the process proceeds to step S25. If it is determined that the predetermined low illuminance condition is not satisfied, the process proceeds to step S26.

  In step S25, the indoor control unit 73 determines that the illuminance sensor 62 is dirty or that there is a foreign object in the light emission path between the LED 61 and the illuminance sensor 62, and the display 74c of the remote controller 74 is displayed. Then, a predetermined abnormality code indicating that the illuminance sensor 62 is dirty or foreign matter is attached is displayed and output.

  In step S26, the indoor control unit 73 determines that the illuminance sensor 62 is normal, and ends the determination process.

(11) Features (11-1)
In the air conditioner 1 including the indoor unit 3 including the fourth corner panel 44 of the present embodiment, a change in detected illuminance of the illuminance sensor 62 when the LED 61 emits light in a state where construction on the site is finished. By seeing, it is possible to determine at least one of an abnormality occurring in the illuminance sensor 62 and an abnormality that the illuminance sensor 62 is dirty or foreign matter exists in the light emission path. Specifically, if the detected illuminance of the illuminance sensor 62 does not change even though the LED 61 is caused to emit light, it is determined that an abnormality has occurred in the illuminance sensor 62, and the illuminance sensor is activated by causing the LED 61 to emit light. If the detected illuminance 62 has changed but the original illuminance has not been obtained, it can be determined that the illuminance sensor 62 is dirty or foreign matter is present in the light emission path.

(11-2)
In the air conditioner 1 including the indoor unit 3 including the fourth corner panel 44 of the present embodiment, after confirming that the illuminance sensor 62 is normal after finishing construction on site, as a condition for causing the LED 61 to emit light, This includes a condition that the illuminance in the room is equal to or lower than a predetermined illuminance (a condition that the detected illuminance of the illuminance sensor 62 determined to be normal is equal to or lower than the predetermined illuminance). Thereby, when it is determined that the illuminance sensor 62 is normal by the abnormality determination of the illuminance sensor 62, the LED 61 can be caused to emit light only when the room is dark.

(11-3)
In the air conditioner 1 including the indoor unit 3 including the fourth corner panel 44 of the present embodiment, the LED 61 is always caused to emit light when power supply to the indoor unit 3 is started, and the detection result of the illuminance sensor 62 at that time is used. The abnormality determination of the illuminance sensor 62 is performed. For this reason, it becomes possible to grasp the abnormality of the illuminance sensor 62 from the beginning of construction.

  In addition, after the abnormality determination process of the illuminance sensor 62 is completed, even when the LED 61 emits light only when the room is below a predetermined illuminance, the abnormality determination process of the illuminance sensor 62 is performed. The LED 61 is forced to emit light at the start of power supply. For this reason, even if the room is bright when the abnormality determination process of the illuminance sensor 62 is performed (even if the indoor illuminance is higher than the predetermined illuminance and thus the light is not emitted in normal control), the LED 61 An abnormality determination of the illuminance sensor 62 using forced light emission can be executed.

(11-4)
In the air conditioner 1 including the indoor unit 3 including the fourth corner panel 44 of the present embodiment, the light emitted from the LED 61 is emitted from the fourth corner panel 44 as shown by the two-dot chain line arrow in FIG. The structure reaches the illuminance sensor 62 inside. Thus, since the illuminance sensor 62 can directly receive the light emitted from the LED 61 inside the fourth corner panel 44, the illuminance sensor is provided so that only the illuminance in the room illuminated by the LED 61 can be detected. Compared to the case, it is possible to increase the change in the detected illuminance depending on whether the LED 61 emits light. Thereby, the abnormality determination accuracy of the illuminance sensor 62 can be increased.

(11-5)
In the air conditioner 1 including the indoor unit 3 including the fourth corner panel 44 of the present embodiment, not only the change in the detected illuminance of the illuminance sensor 62 due to the light emission of the LED 61 is observed, but the illuminance sensor 62 further includes the LED 61. It is also possible to determine whether or not the original illuminance to be obtained by light emission can be detected. For this reason, the abnormality of the illuminance sensor 62 when there is no change in the illuminance detected by the illuminance sensor 62 accompanying the light emission of the LED 61 and the abnormality other than the illuminance sensor 62 when the illuminance sensor 62 cannot detect the original illuminance accompanying the light emission of the LED 61 And can be grasped separately. Here, examples of the abnormality other than the illuminance sensor 62 include contamination of the illuminance sensor 62 and the presence of foreign matter between the illuminance sensor 62 and the LED 61.

(11-6)
In the air conditioner 1 including the indoor unit 3 including the fourth corner panel 44 of the present embodiment, an abnormality in the illuminance sensor 62 and an abnormality in which the illuminance sensor 62 is dirty or foreign matter exists in the light emission path are different abnormality codes. As shown, the display is output on the display 74c of the remote controller 74. Thereby, while a contractor can grasp | ascertain an abnormality easily, the countermeasure for every abnormality is easy.

(12) Modification (12-1) 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.

(12-2) 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 corner substrate 60 may perform the abnormality determination of the illuminance sensor 62 instead of the indoor control unit 73. In this case, the corner substrate 60 causes the LED 61 to emit light, and whether the illuminance sensor 62 is dirty and whether the illuminance sensor 62 is dirty based on a change in illuminance detected by the illuminance sensor 62 or a specific value of illuminance. It is determined that there is an abnormality that foreign matter is present in the light emission path. Then, the corner board 60 transmits various notification signals to the display 74c and the like of the remote controller 74.

(12-3) Modification C
In the above embodiment, the case where the abnormality determination of the illuminance sensor 62 is performed using the forced light emission of the LED 61 at the start of power supply has been described as an example.

  On the other hand, the abnormality determination of the illuminance sensor 62 does not use the forced light emission at the start of power supply of the LED 61, but does not cause the forced light emission at the start of power supply, and the LED 61 satisfies the light emission condition in the normal control. In this case, the light emission of the LED 61 in the case where all the steps S10 to 12 in the above embodiment are Yes may be performed. That is, when the LED 61 emits light by detecting a person in a dark room in a predetermined time zone, the abnormality of the illuminance sensor 62 is determined by observing a change in illuminance detected by the illuminance sensor 62 using the emitted light. You may make it do. In this case, if the lighting conditions are not satisfied at the time of construction, such as when the room is not dark or when it is not in a predetermined time zone, the abnormality of the illuminance sensor 62 cannot be quickly grasped at the time of construction, Even when the LED 61 is not forced to emit light at the start of power supply, it is possible to grasp an abnormality or the like of the illuminance sensor 62.

  Further, whether or not the LED 61 is forced to emit light at the start of power supply, whether or not the LED 61 normally emits light in the normal control of the LED 61, the abnormality determination of the illuminance sensor 62 is performed. You may do it.

  Further, instead of or in addition to the start of power supply, the abnormality determination of the illuminance sensor 62 may be performed every time the air conditioner 1 is turned on by the remote controller 74.

  While 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.

DESCRIPTION OF SYMBOLS 1 Air conditioning apparatus 2 Outdoor unit 3 Indoor unit 11 Outdoor heat exchanger 44 4th corner panel (light emission unit)
35 decorative panel 51 indoor heat exchanger 55 human detection sensor 60 corner board (abnormality judgment unit)
61 LED (light emitting part)
62 Illuminance sensor 63 Buzzer 70 Control part (abnormality judgment part)
72 Outdoor control unit 73 Indoor control unit (abnormality determination unit)
74 Remote control (controller)
74a Remote control board 74c Display (notification part)
81 Corner panel body 84 Mounting member 85 Cover 86 Housing

JP2015-210934A

Claims (7)

A light emitting unit (61) that emits light toward the target space;
One illuminance sensor (62) for detecting the illuminance of the target space;
Based on the detection result of the illuminance sensor with respect to the light emission of the light emitting unit, an abnormality determination unit that distinguishes and determines an abnormality of the illuminance sensor and an abnormality that the illuminance sensor is dirty or foreign matter exists in the light emission path ( 70, 73, 60),
A light emitting unit (44) comprising: The condition for the light emitting unit to emit light includes a condition that the illuminance detected by the illuminance sensor is equal to or lower than a predetermined value or lower than the predetermined value.
The light emitting unit according to claim 1. The light emitting unit emits light at the start of power supply,
The abnormality determination unit determines an abnormality of the illuminance sensor based on a detection result of the illuminance sensor with respect to light emission of the light emitting unit at the start of supply of the power;
The light emitting unit according to claim 1 or 2. A storage section (44, 81, 84, 85) for storing the light emitting section and the illuminance sensor inside is further provided.
The illuminance sensor is disposed at a position where the light emitted from the light emitting unit reaches through the space in the housing unit.
The light emitting unit according to any one of claims 1 to 3. The illuminance sensor detects when the illuminance detected by the illuminance sensor does not change according to the light emission of the light emitting unit and when the illuminance detected by the illuminance sensor changes according to the light emission of the light emitting unit. Judgment is made to distinguish from the case where the detected illuminance satisfies the predetermined illuminance condition,
The light emitting unit according to any one of claims 1 to 4. An indoor unit (3) comprising the light emitting unit according to any one of claims 1 to 5;
Outdoor unit (2),
A controller (74);
With
A notification unit (74c) that notifies the determination result by the abnormality determination unit is provided in any of the indoor unit, the outdoor unit, and the controller.
Air conditioner (1).   The notification unit is a display,
  On the display, the abnormality of the illuminance sensor and the abnormality that the illuminance sensor is dirty or foreign matter exists in the light emission path are displayed as different codes,
The air conditioning apparatus according to claim 6.

Images