JP2018138839A - Indoor unit for air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner capable of uniformizing a temperature distribution of air in an indoor space.SOLUTION: An indoor unit 2 for an air conditioner includes: a first suction port 11 opened on a first side surface 7 of a casing 4 to suck air F; a first lid 15 provided in the first suction port 11; a first lid drive section for moving the first lid 15 between a position in which the first suction port 11 is opened and a position in which it is closed; a second suction port 12 opened on a second side surface 8 at a side opposite to the first side surface 7 of the casing 4 to suck the air F; a second lid 16 provided in the second suction port 12; a second lid drive section for moving the second lid 16 between a position in which the second suction port 12 is opened and a position in which it is closed; a lid control section for controlling the first lid drive section and the second lid drive section; and a blowout port 31 provided on a surface different from a side surface on which the suction ports 11, 12 are provided and blowing out the air that has passed through a heat exchanger.SELECTED DRAWING: Figure 3

Description

  Embodiments described herein relate generally to an indoor unit of an air conditioner.

  In a conventional indoor unit of an air conditioner, air sucked from a suction port provided on the rear side of the casing is adjusted to an appropriate temperature by passing through a heat exchanger and blown out from the front using a fan. I am doing so.

International Publication No. 2014/190780

  However, in an indoor unit of an air conditioner, since the direction in which air is sucked from the suction port is always the same direction, the air flow generated in the entire indoor space is the same direction, and the temperature distribution of the air in the indoor space is biased. There arises a problem that the temperature distribution does not occur and the temperature distribution is not comfortable.

  Embodiments of the present invention have been made in view of such circumstances, and an object of the present invention is to provide an indoor unit of an air conditioner that can make the temperature distribution of air in the indoor space uniform.

  An indoor unit of an air conditioner according to an embodiment of the present invention includes a housing, a heat exchanger disposed inside the housing, a blower that generates a flow of air passing through the heat exchanger, A first suction port that is opened in the first side surface of the housing and sucks air, a first lid provided in the first suction port, and a position between the position where the first suction port is opened and the position where the first suction port is closed A first lid driving unit that moves the first lid, a second suction port that is opened on the second side surface of the housing opposite to the first side surface and sucks air, and the second suction port. A second lid, a second lid driving unit for moving the second lid between a position where the second suction port is opened and a position where the second suction port is closed, the first lid driving unit, and the second lid The heat exchanger is provided on a different surface from the lid control unit for controlling the drive unit and the side surface on which the suction port is provided. Comprising a outlet for blowing air which has passed through the vessel, the.

The perspective view which shows the indoor unit of 1st Embodiment. The perspective view which shows the internal structure of an indoor unit. The vertical side view which shows the indoor unit at the time of a driving | operation start. The cross-sectional top view which shows the indoor unit at the time of a driving | operation start. The vertical side view which shows the indoor unit at the time of air_conditionaing | cooling operation. The vertical side view which shows the indoor unit at the time of heating operation. The cross-sectional top view which shows an indoor unit in case a person exists on the left side. The cross-sectional top view which shows an indoor unit in case a person exists on the right side. Sectional drawing which shows the indoor airflow at the time of a driving | operation start. Sectional drawing which shows the indoor airflow at the time of air_conditionaing | cooling operation. Sectional drawing which shows the indoor airflow at the time of heating operation. Sectional drawing which shows the airflow in a room | chamber interior when a person exists on the left side. Sectional drawing which shows the airflow in a room | chamber interior when a person exists on the right side. The block diagram which shows an air conditioner. The flowchart which shows a full release process. The flowchart which shows the full release process of a modification. The flowchart which shows a lid | cover control process. The perspective view which shows the indoor unit of 2nd Embodiment. The perspective view which shows the internal structure of an indoor unit. The vertical side view which shows the indoor unit at the time of a driving | operation start.

(First embodiment)
Hereinafter, this embodiment is described based on an accompanying drawing. First, the indoor unit of the air conditioner of 1st Embodiment is demonstrated using FIGS. 1-17. 1 and 2 are perspective views showing a state in which the indoor unit according to the first embodiment is viewed from the front side. Hereinafter, the left side of FIGS. 3, 5, 6, 9, 10, and 11 will be described as the front side (front side) of the indoor unit. Further, the description will be made assuming that the lower side of the page of FIGS. 4, 7, and 8 is the front side (front side) of the indoor unit, the left side of the page is the left side of the indoor unit, and the right side of the page is the right side of the indoor unit. 12 and 13 will be described as the left side of the indoor unit and the right side of the paper as the right side of the indoor unit.

  The air conditioner 1 of the present embodiment includes an indoor unit 2 as a fan coil unit provided on a wall surface K in the room and an outdoor unit 3 provided outside (see FIG. 9). This indoor unit 2 exemplifies a wall-mounted type that is attached to a high place on the wall surface K in the room. The indoor unit 2 may be a ceiling suspended type that is suspended from the ceiling T.

  As shown in FIGS. 1 and 2, the indoor unit 2 includes a housing 4 having a box shape (cube shape, rectangular parallelepiped shape). That is, the housing 4 has six surfaces including a front surface 5, a rear surface 6, an upper surface 7, a lower surface 8, a left surface 9, and a right surface 10. The indoor unit 2 is attached to the wall surface K in a state where the back surface 6 is in contact with the wall surface K (see FIG. 3).

  Since the indoor unit 2 is attached to a high place on the wall surface K, the lower surface 8 thereof is separated from the floor surface U. The indoor unit 2 is arranged in a state where the upper surface 7 is separated from the ceiling T. Furthermore, the indoor unit 2 is disposed in a state where the left surface 9 and the right surface 10 are separated from the opposing wall surface K. Note that suction ports 11, 12, 13, and 14 for sucking ambient air are opened at four locations on the top, bottom, left, and right of the housing 4. Each suction inlet 11, 12, 13, 14 comprises a rectangular shape.

  In the present embodiment, the first suction port 11 that opens to the upper surface 7 (first side surface) of the housing 4 and sucks the air F and the first suction port 11 that opens to the lower surface 8 (second side surface) of the housing 4 and sucks the air F. The second suction port 12, the third suction port 13 that opens to the left surface 9 (third side surface) of the housing 4 and sucks air F, and the air F that opens to the right surface 10 (fourth side surface) of the housing 4. And a fourth suction port 14 for sucking in.

  The second suction port 12 is provided on the lower surface 8 (second side surface) opposite to the upper surface 7 (first side surface) where the first suction port 11 is provided in the housing 4. That is, the first suction port 11 is provided at a position higher than the second suction port 12. The first suction port 11 and the second suction port 12 are provided at different height positions.

  The fourth suction port 14 is provided on the right surface 10 (fourth side surface) of the housing 4 opposite to the left surface 9 (third side surface). That is, the 3rd inlet 13 and the 4th inlet 14 are provided in the same height position. In the present embodiment, the first suction port 11, the second suction port 12, the third suction port 13, and the fourth suction port 14 are opened in different directions (upper and lower left and right directions). The first suction port 11, the second suction port 12, the third suction port 13, and the fourth suction port 14 are opened in different directions every 90 degrees in the front view of the indoor unit 2.

  The first suction port 11 is provided with a first lid 15 that can be opened and closed. The indoor unit 2 moves the first lid 15 between a position where the first suction port 11 is opened (see FIG. 5) and a position where the first suction port 11 is closed (see FIG. 6). 14). Furthermore, a first air filter 23 is provided at the first suction port 11. The first suction port 11 is provided with a first temperature sensor 27 (see FIG. 5) that detects the temperature of the air F sucked from the first suction port 11.

  The second suction port 12 is provided with a second lid 16 that can be opened and closed. The indoor unit 2 moves the second lid 16 between a position where the second suction port 12 is opened (see FIG. 6) and a position where the second suction port 12 is closed (see FIG. 5). 14). Furthermore, a second air filter 24 is provided at the second suction port 12. The second suction port 12 is provided with a second temperature sensor 28 (see FIG. 6) that detects the temperature of the air F sucked from the second suction port 12.

  The third suction port 13 is provided with a third lid 17 that can be opened and closed. The indoor unit 2 moves the third lid 17 between a position where the third suction port 13 is opened (see FIG. 7) and a position where the third suction port 13 is closed (see FIG. 8). 14). Further, a third air filter 25 is provided at the third suction port 13. The third suction port 13 is provided with a third temperature sensor 29 (see FIG. 7) that detects the temperature of the air F sucked from the third suction port 13.

  The fourth suction port 14 is provided with a fourth lid 18 that can be opened and closed. The indoor unit 2 moves the fourth lid 18 between a position (see FIG. 8) where the fourth suction port 14 is opened (see FIG. 8) and a position (see FIG. 7) where it is closed (see FIG. 7). 14). Further, a fourth air filter 26 is provided at the fourth suction port 14. The fourth suction port 14 is provided with a fourth temperature sensor 30 (see FIG. 8) that detects the temperature of the air F sucked from the fourth suction port 14.

  Each lid 15, 16, 17, 18 is a plate member having a rectangular shape corresponding to the suction ports 11, 12, 13, 14. These lids 15, 16, 17, and 18 have shafts arranged on the rear edges of the corresponding suction ports 11, 12, 13, and 14, and are swung (moved) about the shafts. Further, the swinging of the lids 15, 16, 17, 18 is controlled by the corresponding lid driving units 19, 20, 21, 22 (motors). Further, the air filters 23, 24, 25, and 26 are provided in the respective suction ports 11, 12, 13, and 14, so that dust can be removed even if air is sucked from any of the suction ports 11, 12, 13, and 14. it can.

  Moreover, the 1st-4th lid drive parts 19, 20, 21, and 22 are controlled independently. That is, the opening and closing operations of the first to fourth suction ports 11, 12, 13, and 14 are controlled independently. In addition, you may link the opening-and-closing operation | movement of the 1st-4th suction inlets 11, 12, 13, and 14. Furthermore, the opening / closing operation of the third suction port 13 or the fourth suction port 14 may be controlled independently of the opening / closing operation of the first suction port 11 or the second suction port 12, or may be controlled in conjunction with each other. good. In this way, depending on the state of the indoor space N, it is possible to generate a flow of air that circulates in the vertical direction or a flow of air that circulates in the horizontal direction. Also, it is possible to generate an air flow that circulates in the vertical direction and an air flow that circulates in the horizontal direction.

  As shown in FIGS. 1 and 2, the front surface 5 of the housing 4 is provided with an air outlet 31 that blows out the temperature-adjusted air F. The air outlet 31 is provided with a plurality of wind direction plates 32 for guiding the air F to be blown out. The indoor unit 2 includes a wind direction plate drive unit 33 (motor) that adjusts the angle of the wind direction plate 32 (see FIG. 14). By adjusting the angles of these wind direction plates 32, a mode in which the air F is blown out from the blower outlet 31 in a horizontal direction (see FIG. 5) and a mode in which the air F is blown out in a diagonally downward direction from the blowout port 31 (see FIG. 6). And can be switched.

  A human sensor 34 that detects the direction in which the person M is present in the indoor space N is provided on the front surface 5 of the housing 4. Further, the front surface 5 of the housing 4 is provided with a receiving unit 36 that receives an infrared signal R (radio signal) transmitted from a wireless remote controller 35 (see FIG. 14) for remotely operating the air conditioner 1.

  As shown in FIGS. 2 and 3, the indoor unit 2 includes a heat exchanger 37 disposed inside the housing 4, an axial fan 38 provided on the front side (leeward side) of the heat exchanger 37, A fan driving unit 39 (motor) that rotates the axial fan 38 and a drain pan 40 that is provided below the heat exchanger 37 and receives water droplets separated from the air by the heat exchanger 37 are provided. The housing 4 that covers the heat exchanger 37 can be ventilated between the first to fourth suction ports 11, 12, 13, and 14 and the air outlet 31.

  In the first embodiment, the axial flow fan 38 and the fan drive unit 39 constitute a blower unit that generates a flow of air that passes through the heat exchanger. The axial fan 38 (propeller fan) has a plurality of blades and can rotate about the axis to generate a linear (cylindrical) air flow. A guide portion 41 that guides the air flow is provided around the axial flow fan 38.

  The heat exchanger 37 of the indoor unit 2 and the outdoor unit 3 are connected via a connection pipe 42 that circulates the refrigerant. A refrigerant is circulated between the heat exchanger 37 and the outdoor unit 3 to constitute a refrigeration cycle.

  The heat exchanger 37 includes a pipe 43 through which the refrigerant passes and a plurality of fins 44 connected to the pipe 43. In the heat exchanger 37, the refrigerant is circulated between the pipe 43 and the outdoor unit 3. And heat exchange can be performed between the air which passes the heat exchanger 37, and a refrigerant | coolant. During the cooling operation, the heat exchanger 37 is operated in a cooling mode in which the temperature of the surrounding air is lowered. Further, during the heating operation, the heat exchanger 37 is operated in a heating mode in which the temperature of the surrounding air is increased. In addition to the cooling mode or the heating mode, there may be a blowing mode or a dehumidifying mode.

  As shown in FIGS. 3, 4, and 9, when the operation of the air conditioner 1 is started, all the inlets 11, 12, 13, 14 are in any of the cooling mode and the heating mode. The full release mode for releasing is executed. In the fully opened mode, the first to fourth lids 15, 16, 17, 18 are set to the maximum opening angle. The air F sucked into the inside of the housing 4 from all the suction ports 11, 12, 13, 14 passes through the heat exchanger 37 and is blown out from the air outlet 31.

  The angle of the wind direction plate 32 is adjusted, and the air F is blown out from the blowout port 31 in the horizontal direction. The operation in the fully open mode ends after a predetermined time has elapsed or when the temperature of the air F in the indoor space N has reached the vicinity of the target temperature.

  In this way, at the start of operation, a large amount of air F can be sucked from all directions of the indoor unit 2 and allowed to pass through the heat exchanger 37, so that the air F in the indoor space N is set to the target temperature (set temperature). It can be reached in a short time.

  The operation in the fully open mode is also executed when the user M changes the temperature setting such as when the target temperature is switched using the wireless remote controller 35. The operation in the fully open mode is executed when the temperature of the air in the indoor space N is suddenly lowered or when the temperature of the air in the indoor space N is suddenly raised. For example, it is executed when the difference between the current temperature of the air in the indoor space N and the target temperature is equal to or higher than a predetermined temperature (for example, 5 ° C. or higher). Further, when the cooling mode is switched to the heating mode, or when the heating mode is switched to the cooling mode, the operation in the fully open mode is executed.

  As shown in FIGS. 5 and 10, during the cooling operation, the first suction port 11 is opened and the other suction ports 12, 13, and 14 are closed. That is, during the cooling operation, the first suction port 11 provided at a position higher than the second suction port 12 is opened and the second suction port 12 is closed. The air F sucked into the housing 4 from the first suction port 11 is cooled when passing through the heat exchanger 37 and blown out from the blowout port 31. In addition, the angle of the wind direction plate 32 is adjusted, and the cold air F is blown out from the blower outlet 31 in the horizontal direction.

  If it does in this way, at the time of air_conditionaing | cooling operation, the warm air F which accumulates upwards in the indoor space N can be suck | inhaled from the 1st inlet 11, and the air F cooled with the heat exchanger 37 can be blown out from the blower outlet 31. FIG. Therefore, since the flow of the air F which goes to the indoor unit 2 through the upper part from the downward direction of the indoor space N can be made, the spot of the temperature of the air of the indoor space N at the time of air_conditionaing | cooling operation can be eliminated.

  As shown in FIGS. 6 and 11, during the heating operation, the second suction port 12 is opened and the other suction ports 11, 13, and 14 are closed. That is, during the heating operation, the second suction port 12 provided at a position lower than the first suction port 11 is opened and the first suction port 11 is closed. The air F sucked into the housing 4 from the second suction port 12 is heated when passing through the heat exchanger 37 and blown out from the blowout port 31. In addition, the angle of the wind direction board 32 is adjusted and the warm air F blows off from the blower outlet 31 diagonally downward.

  If it does in this way, at the time of heating operation, the cold air which accumulates below in indoor space N can be drawn in from the 2nd inlet 12, and air F warmed by heat exchanger 37 can be blown out from blower outlet 31. Therefore, since the flow of the air F which goes to the indoor unit 2 through the downward direction from the upper direction of the indoor space N can be made, the spot of the temperature of the air of the indoor space N at the time of heating operation can be eliminated.

  In the above description, only the first suction port 11 is opened during the cooling operation, and only the second suction port 12 is opened during the heating operation. However, depending on the position of the person M in the indoor space N, The third suction port 13 or the fourth suction port 14 may be opened. If it does in this way, based on the position where person M exists, the flow of the air which circulates through indoor space N can be changed.

  As shown in FIGS. 7 and 12, the human sensor 34 is used to detect the direction W in the indoor space N where the person M is present. Here, when the person M is on the left side of the indoor space N, the third suction port 13 is opened and the fourth suction port 14 is closed. During the cooling operation, the first suction port 11 is opened together with the opening of the third suction port 13. During the heating operation, the second suction port 12 is opened together with the opening of the third suction port 13.

  By opening the third suction port 13, the air F on the left side of the indoor space N is sucked into the indoor unit 2. Therefore, most of the air F blown from the outlet 31 flows to the left side of the indoor space N, and the air F having a comfortable temperature can flow toward the place where the person M is present. In this way, a flow of air circulating in the horizontal direction can be generated in the indoor space N.

  In the present embodiment, when the person M is on the left side of the indoor space N, the third suction port 13 is opened and the fourth suction port 14 is closed, but the person M is on the left side of the indoor space N. When present, the fourth suction port 14 may be opened and the third suction port 13 may be closed. In this case, most of the air F blown out from the air outlet 31 flows away from the place where the person M is present.

  As shown in FIGS. 8 and 13, the human sensor 34 is used to detect the direction W in the indoor space N where the person M is present. Here, when the person M is on the right side of the indoor space N, the fourth suction port 14 is opened and the third suction port 13 is closed. During the cooling operation, the first suction port 11 is opened together with the opening of the fourth suction port 14. Further, during the heating operation, the second suction port 12 is opened together with the opening of the fourth suction port 14.

  By opening the fourth suction port 14, the air F on the right side of the indoor space N is sucked into the indoor unit 2. Therefore, most of the air F blown out from the outlet 31 flows to the right side of the indoor space N, and the air F having a comfortable temperature can flow toward the place where the person M is present. In this way, a flow of air circulating in the horizontal direction can be generated in the indoor space N.

  In the present embodiment, when the person M is on the right side of the indoor space N, the fourth suction port 14 is opened and the third suction port 13 is closed, but the person M is on the right side of the indoor space N. When present, the third suction port 13 may be opened and the fourth suction port 14 may be closed. In this case, most of the air F blown out from the air outlet 31 flows away from the place where the person M is present.

  In this embodiment, since the flow of the linear air blown out from the blower outlet 31 using the axial fan 38 can be generated, the flow of the air F sucked into the suction ports 11, 12, 13, and 14 The flow of the air circulating in the indoor space N can be controlled by the flow of the linear air F blown from the outlet 31.

  Next, the system configuration of the air conditioner 1 will be described with reference to the block diagram shown in FIG. As shown in FIG. 14, the indoor unit 2 includes a main control unit 45 that controls various devices.

  The first temperature sensor 27 inputs the temperature of the air at the first suction port 11 to the main control unit 45. The second temperature sensor 28 inputs the temperature of the air in the second suction port 12 to the main control unit 45. The third temperature sensor 29 inputs the temperature of the air at the third suction port 13 to the main control unit 45. The fourth temperature sensor 30 inputs the temperature of the air in the fourth suction port 14 to the main control unit 45. The human sensor 34 inputs a detection signal indicating the direction in which the person M is present to the main control unit 45.

  The main control unit 45 includes a lid control unit 46 that controls the first to fourth lid drive units 19, 20, 21, and 22, a wind direction plate control unit 47 that controls the wind direction plate drive unit 33, and a heat exchanger 37. A heat exchanger control unit 48 that controls the fan, a fan control unit 49 that controls the fan drive unit 39, an outdoor unit control unit 50 that controls the outdoor unit 3, and all the suction ports 11, 12, 13, And a full release timer 51 that counts the time for opening 14. The main control unit 45 outputs a control signal to each device and controls the operation of the air conditioner 1.

  The main control unit 45 of the present embodiment includes hardware resources such as a processor and a memory, and is configured by a computer in which information processing by software is realized using hardware resources when the CPU executes various programs. The Furthermore, the air conditioning method of the present embodiment is realized by causing a computer to execute a program.

  Next, the full release process executed by the main control unit 45 of the first embodiment will be described with reference to the flowchart of FIG. In the description of each step in the flowchart, for example, a portion described as “Step S11” is abbreviated as “S11”.

  As shown in FIG. 15, first, the main control unit 45 receives an infrared signal R indicating whether there is an operation start operation or a temperature setting change operation, that is, an operation start operation or a temperature setting change operation from the wireless remote controller 35. It is determined whether or not (S11). Here, when there is no operation start operation or temperature setting change operation (S11 is NO), the process ends. On the other hand, if there is an operation start operation or a temperature setting change operation (S11 is YES), the process proceeds to S12.

  In S12, the main control unit 45 determines whether or not the cooling mode operation is started or the cooling mode operation is being performed. Here, when it is not the cooling mode (S12 is NO), it progresses to S14 mentioned later. On the other hand, when it is in the cooling mode (S12 is YES), the process proceeds to S13.

  In S13, the heat exchanger control unit 48 controls the heat exchanger 37 to start the operation in the cooling mode or set the target temperature in the cooling mode, and proceeds to S16 described later. At this time, the axial flow fan 38 is rotated using the fan drive unit 39, thereby generating an air flow passing through the heat exchanger 37. The outdoor unit controller 50 starts control of the outdoor unit 3 according to the cooling mode or the target temperature setting.

  In S14, which proceeds when the above-described S12 is NO, the main control unit 45 determines whether the operation in the heating mode is started or the operation in the heating mode is in progress. Here, when it is not heating mode (S14 is NO), it progresses to S16 mentioned later. On the other hand, when it is heating mode (S14 is YES), it progresses to S15.

  In S15, the heat exchanger control unit 48 controls the heat exchanger 37 to start the operation in the heating mode or set the target temperature in the heating mode, and proceeds to S16 described later. At this time, the axial flow fan 38 is rotated using the fan drive unit 39, thereby generating an air flow passing through the heat exchanger 37. The outdoor unit control part 50 starts control of the outdoor unit 3 according to the setting of heating mode or target temperature.

  In S16, the lid control unit 46 controls the first to fourth lid driving units 19, 20, 21, and 22 to start execution of the full opening mode that opens all the suction ports 11, 12, 13, and 14. To do. Next, the main control unit 45 starts counting the execution time of the full release mode using the full release timer 51 (S17). Note that the count time of the full release timer 51 is set in advance. The count time may be changed as appropriate based on the difference between the current room temperature and the target temperature.

  Next, the main control unit 45 continues counting by the full release timer 51 and continues the full release mode (S18). Next, the main control unit 45 determines whether or not the count of the full release timer 51 has ended, that is, whether or not the count of the full release timer has become equal to or less than a predetermined time (zero). Is determined (S19). If the count of the full release timer 51 has not ended (S19 is NO), the process returns to S18 described above. On the other hand, when the count of the full release timer 51 is completed (S19 is YES), the process proceeds to S20.

  In S <b> 20, the lid control unit 46 controls the first to fourth lid driving units 19, 20, 21, and 22 to close some of the suction ports 11, 12, 13, and 14. For example, in the cooling mode, the first suction port 11 is kept open and the other suction ports 12, 13, and 14 are closed. On the other hand, in the heating mode, the second suction port 12 is kept open and the other suction ports 11, 13, and 14 are closed. Then, the process ends. In this way, regardless of the temperature of the air in the indoor space N, the fully open mode in which all the suction ports 11, 12, 13, 14 are opened can be terminated.

  Next, a full release process according to a modification will be described with reference to the flowchart of FIG. In the modified full release process, S17A and S19A are different from the full release process described above (see FIG. 15), and the other steps are the same.

  As shown in FIG. 16, after starting execution of the full opening mode in which all the suction ports 11, 12, 13, 14 are opened in S <b> 16, the main control unit 45 includes four temperature sensors 27, 28, 29, The temperature sensors 27, 28, 29, and 30 corresponding to the opened suction ports 11, 12, 13, and 14 among 30 are specified (S17A). Next, the main control unit 45 detects the temperature of the air sucked from the suction ports 11, 12, 13, and 14 using the specified temperature sensors 27, 28, 29, and 30 (S18A).

  Next, the main control unit 45 determines whether or not the difference between the detected temperature of the temperature sensors 27, 28, 29, and 30 and the target temperature is equal to or less than a predetermined threshold (for example, 2 ° C. or less) (S19A). Here, when the difference between the detected temperature and the target temperature is not less than or equal to the predetermined threshold (S19A is NO), the process returns to S18A described above. On the other hand, when the difference between the detected temperature and the target temperature is equal to or smaller than the predetermined threshold (S19A is YES), the process proceeds to S20, and some of the suction ports 11, 12, 13, 14 are closed. In this way, when the temperature of the air in the indoor space N reaches the vicinity of the target temperature, the full opening mode for opening all the suction ports 11, 12, 13, 14 can be terminated.

  In this modified example, when the difference between the detected temperature of the temperature sensors 27, 28, 29, and 30 and the target temperature is equal to or less than a predetermined threshold, some of the suction ports 11, 12, 13, and 14 are closed. However, when the detected temperatures of the temperature sensors 27, 28, 29, and 30 reach the target temperature, some of the suction ports 11, 12, 13, and 14 may be closed. Also, all of the four temperature sensors 27, 28, 29, 30 are targeted for temperature detection, and the temperature detected based on any one of these temperature sensors 27, 28, 29, 30 becomes the target temperature. Some of the suction ports 11, 12, 13, and 14 may be closed when the temperature reaches or when the difference from the target temperature is equal to or less than a predetermined threshold.

  Next, lid control processing executed by the main control unit 45 of the first embodiment will be described with reference to the flowchart of FIG. This lid control process is executed after the above-described full opening process is completed. Further, S20 of the above-described full opening process may be used as the lid control process.

  As shown in FIG. 17, the main control unit 45 determines whether or not the cooling mode is being operated (S21). Here, when not operating in the cooling mode (S21 is NO), the process proceeds to S23 described later. On the other hand, when the cooling mode is being operated (S21 is YES), the process proceeds to S22.

  In S22, the lid control unit 46 opens the first suction port 11 by controlling the first lid driving unit 19, and closes the second suction port 12 by controlling the second lid driving unit 20. It progresses to S25 mentioned later. Here, the air F comes to be sucked from the first suction port 11 on the upper surface 7 (first side surface) of the housing 4. The air F comes out from the blower outlet 31 of the front surface 5 which is a surface different from the side surface on which the first suction port 11 is provided.

  In S23, which proceeds when the aforementioned S21 is NO, the main control unit 45 determines whether or not the heating mode is being operated (S23). Here, when not operating in the heating mode (NO in S23), the process proceeds to S25 described later. On the other hand, when the operation is in the heating mode (YES in S23), the process proceeds to S24.

  In S24, the lid controller 46 opens the second suction port 12 by controlling the second lid drive unit 20, and closes the first suction port 11 by controlling the first lid drive unit 19. It progresses to S25 mentioned later. Here, the air F is sucked from the second suction port 12 on the lower surface 8 (second side surface) of the housing 4. The air F is blown out from the air outlet 31 on the front surface 5, which is a surface different from the side surface on which the second suction port 12 is provided.

  In S25, the main control unit 45 determines whether or not the person M is present on the left side of the indoor space N based on the detection signal of the human sensor 34. If there is no person M on the left side of the indoor space N (S25 is NO), the process proceeds to S27 described later. On the other hand, when the person M exists on the left side of the indoor space N (S25 is YES), the process proceeds to S26.

  In S26, the lid control unit 46 opens the third suction port 13 by controlling the third lid driving unit 21, and closes the fourth suction port 14 by controlling the fourth lid driving unit 22. The process ends. Here, the air F is sucked from the third suction port 13 on the left surface 9 (third side surface) of the housing 4. The air F is blown out from the air outlet 31 on the front surface 5, which is a surface different from the side surface on which the third suction port 13 is provided.

  In S27, which proceeds when the aforementioned S25 is NO, the main control unit 45 determines whether or not the person M is on the right side of the indoor space N based on the detection signal of the human sensor 34. If there is no person M on the right side of the indoor space N (S27 is NO), the process proceeds to S29 described later. On the other hand, when the person M exists on the right side of the indoor space N (S27 is YES), the process proceeds to S28.

  In S28, the lid control unit 46 opens the fourth suction port 14 by controlling the fourth lid driving unit 22, and closes the third suction port 13 by controlling the third lid driving unit 21. The process ends. Here, the air F is sucked from the fourth suction port 14 on the right surface 10 (fourth side surface) of the housing 4. The air F comes to blow out from the blower outlet 31 of the front surface 5 which is a surface different from the side surface on which the fourth suction port 14 is provided.

  In S29 that proceeds when S27 is NO, the lid control unit 46 controls the third lid driving unit 21 to close the third suction port 13 and controls the fourth lid driving unit 22. The 4th inlet 14 is closed and a process is complete | finished.

(Second Embodiment)
Next, an air conditioner 1A according to the second embodiment will be described with reference to FIGS. In addition, about the component same as the component shown by embodiment mentioned above, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted. 18 and 19 are perspective views showing a state in which the indoor unit of the second embodiment is viewed from the front side. Hereinafter, the left side of FIG. 20 will be described as the front side (front side) of the air conditioner.

  As shown in FIGS. 19 and 20, the indoor unit 2 </ b> A of the second embodiment includes a centrifugal fan 52 provided on the front side (leeward side) of the heat exchanger 37, and a fan driving unit 53 that rotates the centrifugal fan 52. (Motor). In the second embodiment, the centrifugal fan 52 and the fan drive unit 53 constitute a blower unit that generates a flow of air that passes through the heat exchanger.

  The centrifugal fan 52 has a plurality of runners 54 arranged in a cylindrical shape, and rotates about the axis thereof, whereby the air F sucked from the axial direction can flow in the centrifugal direction (radial direction). . That is, the flow of the air F in the centrifugal direction can be generated. Around the centrifugal fan 52, a guide portion 55 is provided for guiding the air F flowing out in the centrifugal direction toward the front side.

  As shown in FIG. 18, four air outlets 56 are opened on the front surface 5 of the housing 4 </ b> A of the second embodiment. Each outlet 56 has a rectangular shape. These air outlets 56 are arranged in a square arrangement when viewed from the front. Further, when the centrifugal fan 52 is rotated, air is blown out from the four air outlets 56, so that a linear (rectangular) air flow can be generated.

  A wind direction plate 57 is provided corresponding to each outlet 56. The angles of these wind direction plates 57 are independently adjusted. By adjusting these wind direction plates 57, the air blowing direction can be changed to any one of up, down, left and right directions.

  By appropriately selecting the centrifugal fan 52 or the above-described axial fan 38, the air conditioner 1A can be used under optimum conditions according to the situation of the indoor space N.

  Although the air conditioner according to the present embodiment has been described based on the first to second embodiments, the configuration applied in any one of the embodiments may be applied to other embodiments, You may combine the structure applied in embodiment.

  Note that the determination between the predetermined value and the determination value (threshold value) of the present embodiment may be determination of “whether or not the determination value is exceeded”, determination of “whether or not the determination value is exceeded”, The determination may be “whether it is less than or equal to the determination value” or may be determination “whether it is less than the determination value”.

  In addition, in the flowchart of this embodiment, although the form in which each step is performed in series is illustrated, the context of each step is not necessarily fixed, and the context of some steps may be interchanged. good. Some steps may be executed in parallel with other steps.

  In the present embodiment, the four suction ports 11, 12, 13, 14 are provided in the housing 4, but at least two suction ports 11, 12, the first suction port 11 and the second suction port 12, are provided. What is necessary is just to be provided in the housing | casing 4. FIG. Moreover, you may provide only the two inlets 13 and 14 of the 3rd inlet 13 and the 4th inlet 14. FIG.

  In the present embodiment, the suction ports 11, 12, 13, and 14 are opened and closed by swinging the lids 15, 16, 17, and 18, but the lids 15, 16, 17, and 18 are slid. By doing so, the inlets 11, 12, 13, and 14 may be opened and closed.

  In this embodiment, the air conditioner 1 is remotely operated using the wireless remote controller 35. However, the wired remote controller is provided on the wall surface K, and the air conditioner 1 is remotely operated using the wired remote controller. Also good.

  In the present embodiment, four temperature sensors 27, 28, 29, and 30 are provided corresponding to the four suction ports 11, 12, 13, and 14, but 1 on the windward side of the heat exchanger 37. Two temperature sensors may be provided.

  In the present embodiment, only the first suction port 11 is opened during the cooling operation and only the second suction port 12 is opened during the heating operation. However, only the second suction port 12 is opened during the cooling operation. Then, only the first suction port 11 may be opened during the heating operation.

  In addition, you may open | release both the 3rd suction port 13 and the 4th suction port 14 as well as the aspect which open | releases any one of the 3rd suction port 13 and the 4th suction port 14. FIG. In this way, an air flow spreading in the left-right direction of the indoor space N can be generated.

  According to the embodiment described above, the first suction port that opens to the first side surface of the housing and sucks air, and the second suction port that opens to the second side surface opposite to the first side surface of the housing and sucks air. By providing the suction port, the temperature distribution of the air in the indoor space can be made uniform.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, changes, and combinations can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 (1A) ... Air conditioner, 2 (2A) ... Indoor unit, 3 ... Outdoor unit, 4 (4A) ... Housing, 5 ... Front, 6 ... Back, 7 ... Upper surface, 8 ... Lower surface, 9 ... Left surface, DESCRIPTION OF SYMBOLS 10 ... Right side, 11 ... 1st inlet, 12 ... 2nd inlet, 13 ... 3rd inlet, 14 ... 4th inlet, 15 ... 1st lid, 16 ... 2nd lid, 17 ... 3rd lid, 18 ... 4th lid, 19 ... 1st lid drive part, 20 ... 2nd lid drive part, 21 ... 3rd lid drive part, 22 ... 4th lid drive part, 23 ... 1st air filter, 24 ... 2nd air Filter, 25 ... 3rd air filter, 26 ... 4th air filter, 27 ... 1st temperature sensor, 28 ... 2nd temperature sensor, 29 ... 3rd temperature sensor, 30 ... 4th temperature sensor, 31 ... outlet, 32 ... wind direction plate, 33 ... wind direction plate drive unit, 34 ... human sensor, 35 ... wireless remote control, 36 ... reception unit, 37 ... heat exchanger, 38 Axial fan, 39 ... fan drive unit, 40 ... drain pan, 41 ... guide unit, 42 ... connecting pipe, 43 ... piping, 44 ... fin, 45 ... main control unit, 46 ... lid control unit, 47 ... wind direction plate control unit 48 ... Heat exchanger control unit, 49 ... Fan control unit, 50 ... Outdoor unit control unit, 51 ... Full open timer, 52 ... Centrifugal fan, 53 ... Fan drive unit, 54 ... Runner, 55 ... Guide unit, 56 ... Air outlet, 57 ... wind direction plate, F ... air, K ... wall surface, M ... person (user), N ... indoor space, R ... infrared signal, T ... ceiling, U ... floor surface, W ... direction.

Claims (9)

The body,
A heat exchanger disposed inside the housing;
A blower that produces a flow of air passing through the heat exchanger;
A first suction port that is opened in the first side surface of the housing and sucks air;
A first lid provided in the first suction port;
A first lid driving unit that moves the first lid between a position where the first suction port is opened and a position where the first suction port is closed;
A second suction port that is opened on a second side surface of the housing opposite to the first side surface and sucks air;
A second lid provided in the second suction port;
A second lid driving unit that moves the second lid between a position where the second suction port is opened and a position where the second suction port is closed;
A lid controller for controlling the first lid driver and the second lid driver;
An air outlet that is provided on a surface different from the side surface on which the suction port is provided, and that blows out air that has passed through the heat exchanger;
An air conditioner indoor unit. The lid controller is
Performing control of opening the first suction port provided at a position higher than the second suction port during cooling operation and closing the second suction port;
The indoor unit of an air conditioner according to claim 1, wherein control is performed to open the second suction port provided at a position lower than the first suction port and close the first suction port during heating operation. A third suction port that is opened in the third side surface of the housing and sucks air;
A third lid provided in the third suction port;
A third lid driving unit that moves the third lid between a position where the third suction port is opened and a position where the third suction port is closed;
A fourth suction port that is provided at the same height as the third suction port, is opened on a fourth side surface of the housing opposite to the third side surface, and sucks air;
A fourth lid provided in the fourth suction port;
A fourth lid driving unit that moves the fourth lid between a position where the fourth suction port is opened and a position where the fourth suction port is closed;
With
The indoor unit of the air conditioner according to claim 1 or 2, wherein the lid control unit controls the third lid driving unit and the fourth lid driving unit.   The lid control unit controls the opening / closing operation of the third suction port or the fourth suction port independently, or controls in conjunction with the opening / closing operation of the first suction port or the second suction port. Item 6. An air conditioner indoor unit according to Item 3. It has a human sensor that detects the position of people in the indoor space,
The air conditioning according to claim 3 or 4, wherein the lid control unit controls opening and closing of the third suction port and the fourth suction port based on the position of the person detected by the human sensor. Indoor unit of the machine.   The indoor unit of an air conditioner according to any one of claims 1 to 5, wherein the lid control unit performs control to open all the suction ports when starting operation or changing temperature settings. A temperature sensor for detecting the temperature of the air sucked from the suction port;
The air conditioning according to claim 6, wherein the lid control unit terminates the control to open all the suction ports when the difference between the temperature detected by the temperature sensor and the target temperature is equal to or less than a predetermined threshold value. Indoor unit of the machine. A total opening timer for counting the time to open all the suction ports,
The indoor unit of an air conditioner according to claim 6, wherein the lid control unit terminates the control to open all the suction ports when the count of the full open timer becomes a predetermined time or less.   The indoor unit of an air conditioner according to any one of claims 1 to 8, wherein the blower unit includes an axial fan or a centrifugal fan.

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