Indoor drying system

Abstract

[Problem] To suppress excessive supply of heated air to a drying chamber in which laundry is hung for drying. [Solution] This indoor drying system comprises: an air conditioning device that supplies heated air to an underfloor space; a grille 30 provided on a floor 15 of a drying chamber 12; four shutters 81, 82, 83, 84 that open and close four areas 41, 42, 43, 44 of the grille 30; a weight sensor 66; and a management device. The pole 34 is provided directly above the grille 30. The weight sensor 66 detects the weight of laundry hung for drying in four laundry drying areas 51, 52, 53, 54 positioned directly above the areas 41, 42, 43, 44, respectively. The management device determines whether or not a laundry drying speed is faster than an overall average drying speed for each of the laundry drying areas 51, 52, 53, 54 on the basis of the weight of the laundry detected by the weight sensor 66. The management device changes the shutter corresponding to the laundry drying area that has been determined to have the laundry drying speed faster than the overall average drying speed from fully open to half open.

Description

Indoor drying system

[0001] The present invention relates to an indoor drying system that dries laundry dried indoors using an air conditioner attached to a house.

[0002] Patent Document 1 discloses an air conditioning system for a house. This air conditioning system includes an air conditioner, a first air duct, a second air duct, a connection duct, and a controller. The first air duct is connected to a washroom where laundry is dried. The second air duct is connected to an entrance hall. The connection duct connects the first air duct and the second air duct. Valves that are opened and closed by the controller are provided in the first air duct, the second air duct, and the connection duct. Also, a blower fan whose drive is controlled by the controller is provided in the connection duct. When the controller determines that the laundry is dried in the washroom, it controls the drive of the valves and the blower fan to allow the dry air in the entrance hall to flow into the washroom through the connection duct.

[0003] By the way, underfloor heating is known in which heat insulation is performed on the foundation under the floor, and warm air from an air conditioner is sent under the floor to directly warm the floor. In underfloor heating, a grille is provided on the floor of the room. The warm air under the floor blows out from the grille into the room due to the air pressure difference between under the floor and the room.

[0004] Japanese Unexamined Patent Application Publication No. 2021 - 32511

[0005] In underfloor heating, since the floor is directly warmed, in a place where it is not assumed that residents are always present, even if the room temperature is several degrees lower than in a living room or the like where residents are assumed to be always present, there is no problem. Continuously sending warm air into a place where it is not assumed that residents are always present results in a decrease in energy efficiency. The washroom where laundry is dried is a place where it is not assumed that residents are always present. That is, continuously sending warm air into the place where the laundry is dried reduces the energy efficiency.

[0006] On the other hand, heated air is necessary to dry laundry. Even when heated air is supplied, supplying heated air that does not contribute to drying the laundry is an oversupply that reduces energy efficiency. An example of an oversupply of heated air is supplying heated air to laundry that is already dry or partially dry. For example, laundry includes items that are difficult to dry, such as jeans, items that dry more easily than jeans, such as shirts, and items that dry even more easily, such as towels and underwear. Even if towels and underwear dry first, and shirts are partially dry, jeans will remain damp. In this situation, the amount of heated air supplied to towels, underwear, and shirts is an oversupply.

[0007] In the residential air conditioning system described in Patent Document 1, it is not possible to suppress the supply of heated air to laundry that is already dry or partially dry.

[0008] This invention has been made in view of the circumstances described above, and its purpose is to provide a means that can suppress the supply of excessive heated air to a room where laundry is hung to dry.

[0009] (1) The indoor drying system according to the present invention comprises an air conditioning device that supplies heated air under the floor, a louver installed on the floor of a room where laundry is dried, a first shutter that opens and closes an opening in a first region which is part of the louver, a second shutter that opens and closes an opening in a second region which is another part of the louver different from the first region, a first drive device that opens and closes the first shutter, a second drive device that opens and closes the second shutter, a weight sensor that detects a first laundry weight which is the weight of laundry dried above the first region and a second laundry weight which is the weight of laundry dried above the second region, and a controller. The controller performs a determination process that determines the opening ratio of the first region and the opening ratio of the second region based on the first laundry weight and the second laundry weight, and an opening ratio changing process that drives the first drive device and the second drive device based on the determined opening ratio.

[0010] The change in laundry weight over time indicates the degree of dryness of the laundry. The controller determines the degree of dryness of the laundry hanging above the first area based on the weight of the first laundry detected by the weight sensor. The controller also determines the degree of dryness of the laundry hanging above the second area based on the weight of the second laundry detected by the weight sensor. For example, if the laundry hanging above the first area is dry or partially dry, and the laundry hanging above the second area remains damp, the controller performs an opening ratio change process to reduce the opening ratio of the first area and maintain the opening ratio of the second area fully open. As a result, excessive supply of heated air to dry or partially dry laundry is suppressed.

[0011] (2) The louvers may extend along the direction of arrangement that is parallel to the floor surface. The first region and the second region are aligned in the direction of arrangement. The indoor drying system according to the present invention further comprises a pole extending in the direction of arrangement. The weight sensor is a sheet-shaped pressure sensor installed on the pole and extending along the direction of arrangement. The pressure sensor outputs pressure distribution information to which the position and detected pressure are associated.

[0012] By using a sheet-shaped pressure sensor as the weight sensor, the weight and position of each item of laundry can be detected by a single weight sensor.

[0013] (3) The controller may acquire the weight of the first laundry and the weight of the second laundry at predetermined sampling intervals. The determination process includes a first determination process that determines whether or not the laundry has been hung up using the weight sensor, a process that determines the opening ratio of both the first and second regions to be fully open based on the determination that the laundry has been hung up, and a calculation of the overall rate of change, which is the time rate of change of the detected total laundry, the first individual rate of change, which is the time rate of change of the first laundry, and the second individual rate of change, which is the time rate of change of the second laundry, based on the fact that the rate of change of weight corresponding to the difference between the initial total laundry weight, which is the sum of the initial values ​​of the weight of the first laundry and the initial values ​​of the weight of the second laundry, and the time rate of change, which is the sum of the weight of the first laundry and the second individual rate of change, which is the time rate of change of the second laundry. The process includes: a calculation process; a second determination process for determining whether the first individual rate of change and the second individual rate of change are equal to or greater than the overall rate of change; a process for determining the opening ratio of the first region to fully open based on the determination that the first individual rate of change is not equal to or greater than the overall rate of change; a process for determining the opening ratio of the first region to a predetermined opening ratio lower than fully open based on the determination that the first individual rate of change is equal to or greater than the overall rate of change; a process for determining the opening ratio of the second region to fully open based on the determination that the second individual rate of change is not equal to or greater than the overall rate of change; and a process for determining the opening ratio of the second region to the predetermined opening ratio based on the determination that the second individual rate of change is equal to or greater than the overall rate of change.

[0014] The initial total weight of laundry is the total weight of the laundry when it is hung to dry. The detected total weight of laundry is the total weight of the laundry periodically detected at a predetermined sampling interval. The predetermined threshold rate of change is, for example, 10%. In other words, when the total weight of the hung laundry decreases by 10%, the overall rate of change, the first individual rate of change, and the second individual rate of change are calculated. The overall rate of change is the rate of change over time of the total weight of the laundry at the point when the total weight of the laundry has decreased by 10%. The first individual rate of change is the rate of change over time of the weight of the laundry hung in the first area at the point when the total weight of the laundry has decreased by 10%. The second individual rate of change is the rate of change over time of the weight of the laundry hung in the second area at the point when the total weight of the laundry has decreased by 10%. In other words, in the second judgment process, the degree of dryness of the laundry hung in the first area and the degree of dryness of the laundry hung in the second area are compared with the overall degree of dryness. If the degree of dryness is greater than or equal to the overall degree of dryness, it indicates that the laundry is drying faster overall. A dryness level below the overall dryness level indicates that the drying process is slower overall. In areas where drying is fast, the opening ratio is reduced. In areas where drying is slow, the opening ratio is maintained at full blast. In other words, laundry that dries quickly when the total weight of the laundry has decreased by 10% will continue to dry slowly from that point onward. Laundry that dries slowly when the total weight of the laundry has decreased by 10% will continue to dry at the same rate from that point onward. Therefore, the drying completion times for laundry in each area will be more or less synchronized.

[0015] The indoor drying system according to the present invention can suppress the excessive supply of heated air to the room where laundry is dried.

[0016] Figure 1 is a schematic cross-sectional view of a house 11 equipped with an indoor drying system 10 according to an embodiment. Figure 2 is a perspective view of the louvers 30 and poles 34 provided in the drying chamber 12. Figure 3 is a configuration diagram and functional block of the indoor drying system 10. Figure 4 is an explanatory diagram illustrating the correspondence between the louvers 30, poles 34 and the detection position of the weight sensor 66. Figure 5 is a configuration diagram and state transition diagram of the first shutter 81 and the first drive device 71, where (A) shows the state in which the first shutter 81 is in the fully open position, (B) shows the state in which the first shutter 81 is in the half-open position, and (C) shows the state in which the first shutter 81 is in the fully closed position. Figure 6 is a flowchart of the drying process.

[0017] Embodiments of the present invention will be described below. It goes without saying that the embodiments described below are merely examples of the present invention, and the embodiments of the present invention can be modified as appropriate without changing the gist of the invention. In addition, the execution order of each process (each step) shown in the flowchart of Figure 6 may be changed as appropriate without changing the gist of the present invention, some may be omitted, other processes may be added, or other equivalent processes may be substituted.

[0018] [Overview of Indoor Drying System 10] The indoor drying system 10 described in this embodiment is attached to the house 11 shown in Figure 1. The indoor drying system 10 supplies heated air to laundry hung in the drying room 12 of the house 11, thereby drying the laundry. In other words, the indoor drying system 10 is used for drying laundry indoors during the winter.

[0019] [House 11] House 11 may be a private residence or an apartment building. Furthermore, House 11 may be a single-story building or have multiple floors. The house 11 shown in Figure 1 is a private residence and is single-story, having a drying room 12, multiple living rooms including a living room 13, a corridor, and an entrance hall. Note that Figure 1 is a schematic diagram, and rooms other than the drying room 12 and living room 13, as well as the entrance hall and corridor, are omitted from the illustration.

[0020] The drying room 12 is, for example, a washroom. In other words, a room installed for a purpose other than drying laundry indoors is used as the drying room 12. However, the drying room 12 may also be provided in the house 11 as a room exclusively for drying laundry indoors. The drying room 12 is an example of a room where laundry is dried.

[0021] The house 11 is equipped with an underfloor heating system 20. The underfloor heating system 20 is a system that supplies heated air to the underfloor space 16 between the insulated foundation 14 and the floor 15, and heats the entire house 11 through the floor 15.

[0022] The underfloor heating system 20 includes an air conditioning unit 21. The air conditioning unit 21 takes in outside air, which is the air outside the house 11, heats the taken-in outside air, and sends it out as heated air into the underfloor space 16. The air conditioning unit 21 also takes in air from inside the house 11 and discharges it outside the house 11. The air conditioning unit 21 is equipped with a heat exchanger (not shown) that performs heat exchange between the taken-in outside air and the taken-in air from inside the house 11. In Figure 1, arrow 22 indicates the outside air taken in by the air conditioning unit 21. Arrow 23 indicates the heated air that the air conditioning unit 21 sends out into the underfloor space 16. Arrow 24 indicates the air from inside the house 11 taken in by the air conditioning unit 21. Arrow 25 indicates the air that the air conditioning unit 21 discharges outside the house 11.

[0023] Ducts 38 and 39 are installed in the underfloor space 16. One end of ducts 38 and 39 is connected to the exhaust port of heated air in the air conditioning unit 21. The other end of duct 38 is located below the living room 13. The other end of duct 39 is located below the drying room 12. The heated air delivered by the air conditioning unit 21 is supplied to the entire underfloor space 16 through ducts 38 and 39. Note that ducts other than ducts 38 and 39 may also be arranged to supply heated air to the entire underfloor space 16.

[0024] The floor 15 of the house 11 is equipped with multiple louvers 30. Louvers 30 are vents through which heated air passes. Louvers 30 are provided in the floor 15 of the drying room 12, the floor 15 of the living room 13, and the floor 15 of the other living rooms.

[0025] As shown in Figure 2, the louver 30 comprises an opening 31 provided in the floor 15 and a louver member 32 positioned in the opening 31. The louver member 32 is a so-called "slatted platform". The louver member 32 prevents residents from getting stuck in the opening 31.

[0026] The louvers 30 extend along the arrangement direction 33 that is parallel to the horizontal floor surface. The louvers 30 are, for example, walls that partition the drying chamber 12, and extend from the vicinity of one of two opposing walls 17 to the vicinity of the other wall (not shown).

[0027] The heated air supplied by the air conditioning unit 21 to the underfloor space 16 is blown upward through the louvers 30.

[0028] The pole 34 is positioned directly above the louver 30. As shown in Figure 1, the pole 34 is fixed to the ceiling 19 of the drying chamber 12. Alternatively, the pole 34 is fixed to the wall 17 of the drying chamber 12. As shown in Figure 2, the pole 34 extends along the same orientation direction 33 as the louver 30. The lengths of the pole 34 and the louver 30 in the orientation direction 33 are approximately the same.

[0029] In this embodiment, the louvers 30 are described by dividing them into four regions along the arrangement direction 33. The four regions are the first region 41, the second region 42, the third region 43, and the fourth region 44. The first region 41, the second region 42, the third region 43, and the fourth region 44 are aligned along the arrangement direction 33.

[0030] Of the openings 31 of the louver 30, the portion located in the first region 41 is the first opening 45, the portion located in the second region 42 is the second opening 46, the portion located in the third region 43 is the third opening 47, and the portion located in the fourth region 44 is the fourth opening 48.

[0031] Furthermore, of the pole 34, the portion located directly above the first region 41 is the first clothes drying region 51, the portion located directly above the second region 42 is the second clothes drying region 52, the portion located directly above the third region 43 is the third clothes drying region 53, and the portion located directly above the fourth region 44 is the fourth clothes drying region 54.

[0032] [Indoor drying system 10] The indoor drying system 10 is a system that utilizes the air conditioning unit 21 and louvers 30 attached to the house 11. In addition to the air conditioning unit 21 and louvers 30, the indoor drying system 10 includes the control device 60 shown in Figure 3, a weight sensor 66, a drive unit group 70, and a shutter group 80, and the support mechanism 90 shown in Figure 5.

[0033] As shown in Figure 2, the weight sensor 66 is attached to the pole 34. The weight sensor 66 is a sheet-shaped pressure sensor. The weight sensor 66 is a strip that extends along the arrangement direction 33. The weight sensor 66 extends from one end to the other end of the pole 34 in the arrangement direction 33. The weight sensor 66 outputs detection information that associates position information indicating the location where pressure is applied with pressure information indicating the applied pressure. The position information is, for example, distance information with one end of the pole 34 in the arrangement direction 33 as the origin. The distance information indicates the distance from the origin to the location where pressure was detected.

[0034] The weight sensor 66 can individually detect the weight of laundry hanging in the first drying area 51, the second drying area 52, the third drying area 53, and the fourth drying area 54 of the pole 34. The weight sensor 66 also periodically outputs detection information at a predetermined sampling interval. The predetermined sampling interval is, for example, several tens of milliseconds to several hundred milliseconds.

[0035] The weight of the laundry hanging in the first drying area 51 detected by the weight sensor 66 is the weight of the first laundry. The weight of the laundry hanging in the second drying area 52 detected by the weight sensor 66 is the weight of the second laundry. The weight of the laundry hanging in the third drying area 53 detected by the weight sensor 66 is the weight of the third laundry. The weight of the laundry hanging in the fourth drying area 54 detected by the weight sensor 66 is the weight of the fourth laundry.

[0036] Figure 4 shows the correspondence between the first area 41, the first drying area 51, and the weight of the first laundry. Also, Figure 4 shows the correspondence between the second area 42, the second drying area 52, and the weight of the second laundry. Also, Figure 4 shows the correspondence between the third area 43, the third drying area 53, and the weight of the third laundry. Also, Figure 4 shows the correspondence between the fourth area 44, the fourth drying area 54, and the weight of the fourth laundry. In Figure 4, five towels 26 are hung in the first drying area 51, four shirts 27 are hung in the second drying area 52, three sweaters 28 are hung in the third drying area 53, and three pairs of jeans 29 are hung in the fourth drying area 54. In Figure 4, "X5" indicates that five towels 26 are being hung to dry, "X4" indicates that four shirts 27 are being hung to dry, and "X3" indicates that three sweaters 28 and three pairs of jeans 29 are being hung to dry.

[0037] The detection information output by the weight sensor 66 is converted into a digital signal by a conversion IC (not shown). This digital signal is a rectangular wave with an intensity corresponding to the detected pressure, i.e., the weight of the laundry.

[0038] The first laundry weight is the sum of the weights of each item of laundry hung in the first drying area 51. In the example shown in Figure 4, the first laundry weight is the sum of the intensities of the five rectangular waves 101 detected in the first drying area 51.

[0039] The second laundry weight is the sum of the weights of each item of laundry hung in the second drying area 52. In the example shown in Figure 4, the second laundry weight is the sum of the intensities of the four rectangular waves 102 detected in the second drying area 52.

[0040] The third laundry weight is the sum of the weights of each item of laundry hung in the third drying area 53. In the example shown in Figure 4, the third laundry weight is the sum of the intensities of the three rectangular waves 103 detected in the third drying area 53.

[0041] The fourth laundry weight is the sum of the weights of each item of laundry hung in the fourth drying area 54. In the example shown in Figure 4, the fourth laundry weight is the sum of the intensities of the three rectangular waves 104 detected in the fourth drying area 54.

[0042] Note that the laundry items dried in each drying area 51, 52, 53, and 54 do not have to be separated by type of clothing as shown in FIG. 4. For example, a plurality of clothing items such as a towel 26, a shirt 27, a sweater 28, and jeans 29 may be mixed and dried in each drying area 51, 52, 53, and 54 respectively. Note that it may be recommended to dry the clothing separately by type for the residents.

[0043] The weight sensor 66 is communicably connected to a router (not shown) installed in the management device 60 or the house 11 by a communication cable or wireless communication.

[0044] As shown in FIG. 3, the drive device group 70 includes a first drive device 71, a second drive device 72, a third drive device 73, and a fourth drive device 74.

[0045] The first drive device 71, the second drive device 72, the third drive device 73, and the fourth drive device 74 have the same configuration except for the installation location.

[0046] As shown in FIGS. 3 and 5, the first drive device 71 includes a first motor 75, an interlocking gear 58, a reduction gear mechanism 59, and a power supply device 79. The second drive device 72 includes a second motor 76, an interlocking gear 58, a reduction gear mechanism 59, and a power supply device 79. The third drive device 73 includes a third motor 77, an interlocking gear 58, a reduction gear mechanism 59, and a power supply device 79. The fourth drive device 74 includes a fourth motor 78, an interlocking gear 58, a reduction gear mechanism 59, and a power supply device 79. The interlocking gear 58 included in the first drive device 71, the interlocking gear 58 included in the second drive device 72, the interlocking gear 58 included in the third drive device 73, and the interlocking gear 58 included in the fourth drive device 74 are separate bodies. Also, the reduction gear mechanism 59 included in the first drive device 71, the reduction gear mechanism 59 included in the second drive device 72, the reduction gear mechanism 59 included in the third drive device 73, and the reduction gear mechanism 59 included in the fourth drive device 74 are separate bodies. Also, the power supply device 79 is shared by the second drive device 72, the third drive device 73, and the fourth drive device 74.

[0047] The four motors 75, 76, 77, and 78 are, for example, stepping motors capable of controlling the amount of rotation. The motors 75, 76, 77, and 78 are driven by being supplied with a three-phase AC voltage. As shown in FIG. 5(A), the motors 75, 76, 77, and 78 each have a rotating shaft 56 that rotates when driven. The rotating shaft 56 is connected to a reduction gear mechanism 59.

[0048] The reduction gear mechanism 59 is a mechanism that reduces and outputs the rotation of the rotating shaft 56. The reduction gear mechanism 59 is fixed to the floor 15 directly or via a support mechanism 90. The reduction gear mechanism 59 has an output gear 57. The output gear 57 is interlocked with the rotation of the rotating shaft 56 and rotates at a lower speed than the rotating shaft 56. The output gear 57 meshes with an interlocking gear 58. For example, a commercially available reduction gearbox is used as the reduction gear mechanism 59.

[0049] The interlocking gear 58 is fixed to the floor 15 directly or via a support mechanism 90 and meshes with the output gear 57. Also, the interlocking gear 58 meshes with the rack gears 85 of the shutters 81, 82, 83, and 84, respectively. The interlocking gear 58 transmits the rotation of the output gear 57 to the shutters 81, 82, 83, and 84 and slides the shutters 81, 82, 83, and 84.

[0050] The power supply device 79 shown in FIG. 3 is connected to a commercial AC voltage attached to the house 11. The power supply device 79 converts the input AC voltage into a three-phase AC voltage and outputs it. The power supply device 79 includes, for example, a converter that converts the input AC voltage into a DC voltage and an inverter that converts the converted DC voltage into a three-phase AC voltage.

[0051] The power supply unit 79 has four output terminals. The first output terminal is connected to the first motor 75. The second output terminal is connected to the second motor 76. The third output terminal is connected to the third motor 77. The fourth output terminal is connected to the fourth motor 78. In other words, the power supply unit 79 can drive motors 75, 76, 77, and 78 individually. The power supply unit 79 is driven and controlled by the control device 60. That is, the control device 60 can individually drive the first drive unit 71, the second drive unit 72, the third drive unit 73, and the fourth drive unit 74 via the power supply unit 79.

[0052] As shown in Figure 3, the shutter group 80 comprises a first shutter 81, a second shutter 82, a third shutter 83, and a fourth shutter 84. Each of the four shutters 81, 82, 83, and 84 is equipped with a rack gear 85 on its underside. The rack gear 85 extends along the sliding direction 35. The sliding direction 35 is along the horizontal direction and perpendicular to the arrangement direction 33.

[0053] The first shutter 81 shown in Figure 5 is slidably supported by the first support mechanism 90 and is slid by the first drive unit 71. The second shutter 82 is slidably supported by the second support mechanism 90 and is slid by the second drive unit 72. The third shutter 83 is slidably supported by the third support mechanism 90 and is slid by the third drive unit 73. The fourth shutter 84 is slidably supported by the fourth support mechanism 90 and is slid by the fourth drive unit 74.

[0054] The first shutter 81, the second shutter 82, the third shutter 83, and the fourth shutter 84 have the same configuration. Also, the four support mechanisms 90 have the same configuration. The first shutter 81 and the first support mechanism 90 will be described below.

[0055] The support mechanism 90 includes a pair of guide rails 91 and a pair of positioning members 92 and 93 fixed to the lower surface of the floor 15 of the drying chamber 12.

[0056] One guide rail 91 is fitted to one end of the first shutter 81 in the arrangement direction 33. The other guide rail 91 is fitted to the other end of the first shutter 81 in the arrangement direction 33. The pair of guide rails 91 support the first shutter 81 so as to be slidable along the sliding direction 35.

[0057] The positioning members 92 and 93 are fixed to the floor 15 either directly or via the support mechanism 90. One positioning member 92 is positioned to contact the first shutter 81 when it has slid from the fully closed position to the fully open position along the sliding direction 35. The other positioning member 93 is positioned to contact the first shutter 81 when it has slid from the fully open position to the fully closed position along the sliding direction 35. Positioning member 92 restricts the first shutter 81 from sliding beyond the fully open position and positions the first shutter 81 in the fully open position. Positioning member 93 restricts the first shutter 81 from sliding beyond the fully closed position and positions the first shutter 81 in the fully closed position.

[0058] The first drive unit 71 and the first shutter 81 are installed below the first region 41 of the louver 30. The first shutter 81 is slid by the first drive unit 71 to open and close the first opening 45 of the louver 30. Specifically, the first shutter 81 slides between a fully open position shown in Figure 5(A) where the first opening 45 of the louver 30 is fully open, a half-open position shown in Figure 5(B) where the first opening 45 is half-open, and a fully closed position shown in Figure 5(C) where the first opening 45 is fully closed. The opening ratio of the first opening 45 in the fully open position is 100%. The opening ratio of the first opening 45 in the half-open position is 50%. The opening ratio of the first opening 45 in the fully closed position is 0%.

[0059] The second drive unit 72 and the second shutter 82 are installed below the second region 42 of the louver 30. The second shutter 82 is slid by the second drive unit 72 to open and close the second opening 46 of the louver 30. The second shutter 82 slides between a fully open position where the second opening 46 of the louver 30 is fully open, a half-open position where the second opening 46 is half-open, and a fully closed position where the second opening 46 is fully closed.

[0060] The third drive unit 73 and the third shutter 83 are installed below the third region 43 of the louver 30. The third shutter 83 is slid by the third drive unit 73 to open and close the third opening 47 of the louver 30. The third shutter 83 slides between a fully open position where the third opening 47 of the louver 30 is fully open, a half-open position where the third opening 47 is half-open, and a fully closed position where the third opening 47 is fully closed.

[0061] The fourth drive unit 74 and the fourth shutter 84 are installed below the fourth region 44 of the louver 30. The fourth shutter 84 is slid by the fourth drive unit 74 to open and close the fourth opening 48 of the louver 30. The fourth shutter 84 slides between a fully open position in which the fourth opening 48 of the louver 30 is fully open, a half-open position in which the fourth opening 48 is half-open, and a fully closed position in which the fourth opening 48 is fully closed.

[0062] The management device 60 shown in Figure 3 is a personal computer installed in the house 11. Alternatively, the management device 60 is a management terminal for house management equipped with a microcomputer.

[0063] The management device 60 comprises a central processing unit (CPU) 61, memory 62, and a communication interface 63. The CPU 61 is connected to the memory 62 and the communication interface 63 by a communication bus (not shown). The CPU 61 is an example of a controller.

[0064] The communication interface 63 is connected to the weight sensor 66 and the power supply unit 79 via a router installed, for example, in the house 11. The router, the management device 60, the weight sensor 66, and the power supply unit 79 are connected by a communication cable or by proximity wireless communication such as Wi-Fi.

[0065] The memory 62 may include, for example, ROM, RAM, EEPROM, a hard disk drive, a solid-state drive, and a USB memory. The memory 62 may also have other storage elements.

[0066] Memory 62 stores the operating system OS 64, the management program 65, and various thresholds.

[0067] The management program 65 controls the opening and closing of the shutter group 80 via the power supply unit 79 based on the weight of the laundry detected by the weight sensor 66. A detailed explanation will follow with reference to Figure 6. The processes that the management program 65 has the CPU 61 execute are processes that the controller CPU 61 executes, and also processes that the management device 60 executes.

[0068] [Processing by Management Program 65] As shown in Figure 6, the management program 65 acquires the weight of the first, second, third, and fourth laundry items based on the detection information from the weight sensor 66 (S11). Based on the weight of each laundry item, the management program 65 determines whether or not the laundry has been hung in the drying chamber 12 (S12). Specifically, the management program 65 determines whether or not the weight of any of the first, second, third, and fourth laundry items is greater than or equal to a threshold weight. Alternatively, the management program 65 determines whether or not the total laundry weight, which is the sum of the weights of the first, second, third, and fourth laundry items, is greater than or equal to a threshold weight. If the weight of each laundry item or the total laundry weight is greater than or equal to a threshold weight, the management program 65 determines that the laundry has been hung (S12: Yes). The threshold weight is a threshold value pre-stored in memory 62, and is the weight equivalent to the weight of the lightest laundry immediately after washing, such as towels or underwear. The process in step S12 is an example of the first decision process.

[0069] If the control program 65 determines that no laundry is hanging (S12: No), it terminates the drying process (end). The control program 65 repeatedly executes steps S11 and S12 at predetermined intervals. The predetermined interval is, for example, several hundred milliseconds to several seconds.

[0070] When the management program 65 determines that the laundry has been hung out to dry (S12: Yes), it calculates the total weight of the laundry, which is the sum of the weights of the first, second, third, and fourth laundry items, and stores this total weight of laundry in memory 62 as the initial total weight of laundry Wa (S13). The management program 65 also stores the weights of the first, second, third, and fourth laundry items in memory 62 (S13).

[0071] Next, the control program 65 determines the opening ratio of all shutters 81, 82, 83, and 84 to 100%, which is fully open, and drives the drive unit group 70 (S14). For example, the control program 65 drives the motors 75, 76, 77, and 78 for the amount of time or rotation required for the shutters 81, 82, 83, and 84 to slide to the fully open position where they contact the positioning member 92. The process in step S14 is an example of the process of determining to fully open.

[0072] When all shutters 81, 82, 83, and 84 are fully opened, heated air is blown upward from the first opening 45, second opening 46, third opening 47, and fourth opening 48 of the louvers 30. The laundry is gradually dried by this heated air. That is, the weight of the first, second, third, and fourth loads of laundry detected by the weight sensor 66 gradually decreases.

[0073] The management program 65 acquires the gradually decreasing weights of the first, second, third, and fourth laundry items again and stores them in memory 62 (S15). The management program 65 sums up the acquired weights of each laundry item to calculate the detected total laundry weight Wb (S16). The management program 65 calculates the weight change rate A of the total laundry weight by dividing the difference between the initial total laundry weight Wa stored in memory 62 in step S13 and the detected total laundry weight Wb calculated in step S16 by the initial total laundry weight Wa (S17). Note that the difference is taken as an absolute value to obtain a positive value. Alternatively, the difference is obtained by subtracting the detected total laundry weight Wb from the initial total laundry weight Wa to obtain a positive value.

[0074] The management program 65 determines whether the weight change rate A of the total weight of the laundry is greater than or equal to a first threshold change rate pre-stored in the memory 62 (S18). The first threshold change rate is, for example, 10%. That is, in step S18, it is determined whether the total weight of the laundry, which contains water, has decreased by 10% immediately after washing. The first threshold change rate may be other values ​​besides 10%, such as 20% or 30%.

[0075] If the management program 65 determines that the weight change rate A is not equal to or greater than the first threshold change rate (S18: No), it repeats the process from steps S15 to S18. That is, the detection of laundry weight is repeated until the laundry becomes 10% lighter in weight ratio. The process from steps S15 to S18 is repeated, for example, at a predetermined sampling interval. The predetermined sampling interval is, for example, several tens of milliseconds to several hundred milliseconds.

[0076] If the management program 65 determines that the weight change rate A is equal to or greater than the first threshold change rate (S18: Yes), it retrieves the weight of the first, second, third, and fourth laundry items again and stores them in memory 62 (S19).

[0077] The management program 65 calculates the total detected laundry weight Wc by summing the weights of each acquired laundry item (S20). The management program 65 calculates the overall rate of change D, which is the rate of change of the detected laundry weight Wc over time, by dividing the difference between the initial total laundry weight Wa stored in memory 62 in step S13 and the detected total laundry weight Wc calculated in step S16 by the arrival time T (S20). The arrival time T is the time from the time when the laundry weight was acquired in step S11 to the time when the laundry weight was acquired in step S19. For example, the arrival time T is calculated by multiplying the sampling interval by the number of times the laundry weight was detected in steps S15 and S19 and stored in memory 62. The management program 65 stores the calculated overall rate of change D in memory 62 (S20). The overall rate of change D is the average drying speed of the entire laundry. This drying speed indicates the degree to which the laundry as a whole dries.

[0078] Furthermore, the management program 65 calculates individual change rates dn, which include the individual change rate d1, which is the time rate of change of the first laundry item, the individual change rate d2, which is the time rate of change of the second laundry item, the individual change rate d3, which is the time rate of change of the third laundry item, and the individual change rate d4, which is the time rate of change of the fourth laundry item, based on the individual change rate d1 of each laundry item stored in memory 62 in step S13 and the individual change rate d2 of each laundry item obtained in step S19 (S21). Specifically, the management program 65 calculates the individual change rate d1 of the first laundry item by dividing the absolute value of the difference between the first laundry item stored in memory 62 in step S13 and the first laundry item obtained in step S19 by the arrival time T. The management program 65 calculates the individual change rate d2 of the second laundry item, the individual change rate d3 of the third laundry item, and the individual change rate d4 of the fourth laundry item in the same manner as the individual change rate d1 of the first laundry item. d1 is an example of the first individual rate of change. d2 is an example of the second individual rate of change. The processes in steps S20 and S21 are examples of calculation processes.

[0079] The individual rate of change d1 of the first laundry weight indicates the average drying speed, which is the average rate at which laundry hung in the first drying area 51 of the pole 34 dries. The individual rate of change d2 of the second laundry weight indicates the average drying speed, which is the average rate at which laundry hung in the second drying area 52 of the pole 34 dries. The individual rate of change d3 of the third laundry weight indicates the average drying speed, which is the average rate at which laundry hung in the third drying area 53 of the pole 34 dries. The individual rate of change d4 of the fourth laundry weight indicates the average drying speed, which is the average rate at which laundry hung in the fourth drying area 54 of the pole 34 dries. This average drying speed indicates the degree to which laundry dries in each drying area 51, 52, 53, and 54.

[0080] The management program 65 determines whether each individual rate of change d1, d2, d3, and d4 is greater than or equal to the overall rate of change D, which is the rate of change over time of the total weight of the laundry (S22). Specifically, in step S22, it is determined whether the individual rate of change d1, which indicates the average drying speed of the laundry hung in the first drying area 51 of the pole 34, is greater than or equal to the overall rate of change D; whether the individual rate of change d2, which indicates the average drying speed of the laundry hung in the second drying area 52, is greater than or equal to the overall rate of change D; whether the individual rate of change d3, which indicates the average drying speed of the laundry hung in the third drying area 53, is greater than or equal to the overall rate of change D; and whether the individual rate of change d4, which indicates the average drying speed of the laundry hung in the fourth drying area 54, is greater than or equal to the overall rate of change D. The process in step S22 is an example of the second decision process.

[0081] If the control program 65 determines that the individual rate of change d1 is not greater than or equal to the overall rate of change D (S22: No), it decides to maintain the opening ratio of the first shutter 81 at 100%, which is fully open (S23). If the control program 65 determines that the individual rate of change d1 is greater than or equal to the overall rate of change D (S22: Yes), it decides to change the opening ratio of the first shutter 81 to 50%, which is half open (S24). Similarly, the control program 65 determines the opening ratios of the second shutter 82, the third shutter 83, and the fourth shutter 84 (S23, S24). If there is an area among the four drying areas 51, 52, 53, and 54 where no laundry is being hung, the shutter corresponding to that area is set to a half-open opening ratio regardless of the individual rate of change dn. A half-open opening ratio of 50% is an example of a predetermined opening ratio lower than fully open. The process in step S24 is an example of a process that determines a predetermined opening ratio lower than fully open. The predetermined opening ratio lower than fully open may be other values ​​such as 40%, 30%, 60%, or 70%, in addition to 50%.

[0082] The control program 65 drives the drive unit group 70 based on the determined opening ratio (S25), that is, it partially opens one of the shutters 81, 82, 83, and 84, and keeps the remaining shutters fully open. In this way, when the total weight of the laundry decreases by 10%, the control program 65 changes the shutters corresponding to the areas where the laundry dries faster than the average drying speed of the entire laundry from fully open to partially open. For example, if the laundry hanging in the first drying area 51, second drying area 52, and third drying area 53 of the pole 34 dries faster than the average drying speed, and the laundry hanging in the fourth drying area 54 dries slower than the average drying speed, the first shutter 81, second shutter 82, and third shutter 83 are partially opened, and the fourth shutter 84 is kept fully open.

[0083] The management program 65 maintains the opening / closing ratio of shutters 81, 82, 83, and 84 fully open or changes it to half-open (S25), then acquires the weight of the first, second, third, and fourth laundry items again and stores them in memory 62 (S26). The management program 65 sums up the acquired weights of each laundry item to calculate the detected total laundry weight Wd (S27). The management program 65 divides the difference between the initial total laundry weight Wa stored in memory 62 in step S13 and the detected total laundry weight Wd calculated in step S27 by the initial total laundry weight Wa to calculate the weight change rate B of the total laundry weight (S28). The management program 65 determines whether the calculated weight change rate B of the total laundry weight is greater than or equal to the second threshold change rate pre-stored in memory 62 (S28). The second threshold change rate is 80%, which corresponds to the moisture content of the clothes when the laundry is dry, which is 20%. In other words, in step S28, it is determined whether or not all the laundry is dry.

[0084] If the management program 65 determines that the weight change rate B of the total weight of the laundry is not greater than or equal to a second threshold change rate pre-stored in the memory 62 (S28: No), it repeats the processes of steps S26, S27, and S28. That is, the detection of the laundry weight is repeated until the laundry is finished drying. The processes of steps S26, S27, and S28 are repeated, for example, at a predetermined sampling interval. The predetermined sampling interval is, for example, several tens of milliseconds to several hundred milliseconds.

[0085] When the management program 65 determines that the weight change rate B of the total weight of the laundry is greater than or equal to the second threshold change rate (S28: Yes), it decides to fully close all shutters 81, 82, 83, and 84 (S29). The processes in steps S14, S23, S24, and S29, which determine the opening ratio of shutters 81, 82, 83, and 84, are an example of the determination process.

[0086] The control program 65 drives the drive unit group 70 via the power supply unit 79 to fully close all shutters 81, 82, 83, and 84 (S30). That is, when the control program 65 determines that all the laundry is dry (S28: Yes), it closes all shutters 81, 82, 83, and 84. For example, the control program 65 drives motors 75, 76, 77, and 78 for only the time or amount of rotation required for shutters 81, 82, 83, and 84 to slide to the fully closed position where they contact the positioning member 93. The process of driving the drive unit group 70 to change the opening and closing ratio of shutters 81, 82, 83, and 84 in steps S14, S25, and S30 is an example of an opening ratio changing process.

[0087] The management program 65 notifies the resident that the drying of the laundry is complete (S31) and terminates the drying process (end). Notification to the resident is done, for example, by outputting an alert sound from a speaker installed in the house 11, or by sending notification information to a communication terminal carried by the resident.

[0088] [Effects of the Embodiment] The control program 65 opens the shutters 81, 82, 83, and 84 that correspond to the drying areas 51, 52, 53, and 54 where the drying speed is faster than the average drying speed, from fully open to half-open when the weight of the laundry changes by 10%. In other words, for drying areas where many easily drying types of clothing are hung, the control program 65 opens the shutters from fully open to half-open at a predetermined timing. Therefore, compared to the case where all shutters 81, 82, 83, and 84 are kept fully open until the laundry is dry, the oversupply of heated air to the laundry after drying is suppressed.

[0089] Since a sheet-shaped pressure sensor is used as the weight sensor 66, one weight sensor 66 can detect the weight of the laundry hung in each of the drying areas 51, 52, 53, and 54.

[0090] The management program 65 opens the shutters 81, 82, 83, and 84 that correspond to the drying areas 51, 52, 53, and 54 where the drying speed is faster than the average drying speed, from fully open to partially open when the weight of the laundry changes by 10%. As a result, the timing at which the laundry is finished drying in each drying area 51, 52, 53, and 54 is more consistent than when all shutters 81, 82, 83, and 84 are fully open until the laundry is dry. Consequently, it is less likely that residents will bring in laundry that is not yet dry along with laundry that has already dried.

[0091] [Modification] In the embodiment, an example was described in which, when the initial weight of the laundry has decreased by 10%, the shutter corresponding to the drying area where the drying speed is faster than the average drying speed of the entire laundry is opened from fully open to half-open. However, the shutters corresponding to the areas may be opened from fully open to half-open in order from the areas with the fastest drying speeds. The timing for opening the shutters from fully open to half-open is, for example, when the weight change rate of the laundry hung in each drying area exceeds a predetermined value. For example, a towel 26 hung in the first drying area 51 dries faster than the laundry hung in the other areas, and when the weight change rate of the towel 26 reaches 50%, the first shutter 81 is opened from fully open to half-open. A shirt 27 hung in the second drying area 52 dries faster than the laundry hung in the third drying area 53 and the fourth drying area 54, and when the weight change rate of the shirt 27 reaches 50%, the second shutter 82 is opened from fully open to half-open. The sweater 28 hung in the third drying area 53 dries faster than the jeans 29 hung in the fourth drying area 54, and when the weight change rate of the sweater 28 reaches 50%, the third shutter 83 is moved from fully open to half-open. This "50%" is a threshold that determines the timing for changing the shutter's opening ratio. This threshold may be other values ​​such as 30%, 40%, 60%, or 70%. In this way, the area where fast-drying laundry is hung is determined from the detected laundry weight, and if the shutter corresponding to the area where fast-drying laundry is hung is moved from fully open to an opening ratio lower than fully open during the drying process, the management program 65 may control the drive of the drive unit group 70 by any process.

[0092] In this embodiment, in step S27, the detected total weight of laundry Wd is calculated, and in step S28, it is determined whether the weight change rate B of the total weight of laundry is greater than or equal to the second threshold change rate. However, in step S27, the difference between the first laundry weight obtained in step S11 and the laundry weight obtained in step S26 may be divided by the first laundry weight obtained in step S11 to calculate the weight change rate C1 of the first laundry weight. Similarly, the weight change rates C2 of the second laundry weight, C3 of the third laundry weight, and C4 of the fourth laundry weight are calculated. In step S28, it is determined whether all of the weight change rates C1, C2, C3, and C4 of the laundry weight are greater than or equal to the second threshold change rate. That is, it may be determined whether the laundry is dry or not for each drying area 51, 52, 53, and 54, rather than for the laundry as a whole.

[0093] In the embodiment, an example was described in which, in step S22, the individual rate of change dn of laundry weight, which indicates the average drying speed of laundry hung in the drying areas 51, 52, 53, and 54 of the pole 34, is compared with the overall rate of change D, which indicates the average drying speed of the entire laundry. However, it is also possible to identify one piece of laundry that dries the slowest among the laundry hung in the drying areas 51, 52, 53, and 54, and compare the drying speed of the identified piece of laundry with the overall rate of change D. In other words, the shutters 81, 82, 83, and 84 may be opened and closed based on the drying speed of the laundry that is the most difficult to dry in the drying areas 51, 52, 53, and 54, rather than the "average" drying speed.

[0094] In the embodiment, an example was described in which a sheet-shaped pressure sensor capable of detecting the weight of a first, second, third, and fourth load of laundry was used as the weight sensor 66. However, four weight sensors may be installed on the pole 34: a first weight sensor for detecting the weight of the first load of laundry, a second weight sensor for detecting the weight of the second load of laundry, a third weight sensor for detecting the weight of the third load of laundry, and a fourth weight sensor for detecting the weight of the fourth load of laundry. The first weight sensor is located in the first drying area 51. The second weight sensor is located in the second drying area 52. The third weight sensor is located in the third drying area 53. The fourth weight sensor is located in the fourth drying area 54.

[0095] In the embodiment, an example was described in which the indoor drying system 10 comprises four drive units 71, 72, 73, 74 and shutters 81, 82, 83, 84. However, the indoor drying system 10 may comprise two drive units 71, 72 and shutters 81, 82, three drive units 71, 72, 73 and shutters 81, 82, 83, or five or more drive units and shutters.

[0096] In the embodiments described, the support mechanism 90 is provided with a pair of guide rails 91. However, the support mechanism 90 may be any mechanism as long as it is capable of slidably supporting the shutters 81, 82, 83, and 84. For example, instead of a pair of guide rails 91, the support mechanism 90 may provide a pair of guide pins inserted through the shutters 81, 82, 83, and 84.

[0097] In the embodiment described, an example was described in which the indoor drying system 10 comprises a first motor 75, a second motor 76, a third motor 77, and a fourth motor 78, which are stepping motors. However, the indoor drying system 10 may also comprise a first electric cylinder, a second electric cylinder, a third electric cylinder, and a fourth electric cylinder instead of the first motor 75, the second motor 76, the third motor 77, and the fourth motor 78. The first shutter 81 is fixed to the tip of the rod of the first electric cylinder. The second shutter 82 is fixed to the tip of the rod of the second electric cylinder. The third shutter 83 is fixed to the tip of the rod of the third electric cylinder. The fourth shutter 84 is fixed to the tip of the rod of the fourth electric cylinder. The amount of sliding of the rods of the first electric cylinder, the second electric cylinder, the third electric cylinder, and the fourth electric cylinder is controlled by the control device 60. The control device 60 controls the opening and closing of shutters 81, 82, 83, and 84 via a power supply unit 79 and four electric cylinders.

[0098] In the embodiment, an example was described in which laundry is hung in four drying areas 51, 52, 53, and 54, and in step S14, all shutters 81, 82, 83, and 84 are fully open. The management program 65 may determine whether or not there are any areas among the four drying areas 51, 52, 53, and 54 where laundry is not hung, based on the weight of each piece of laundry stored in memory 62 in step S13. For areas where laundry is not hung, the management program 65 may fully close or partially open the shutter corresponding to that area in step S14. Alternatively, the management program 65 may partially open the shutters for areas where laundry is not hung in steps S24 and S25.

[0099] [Note 1] An indoor drying system comprising: an air conditioning unit that supplies heated air to the space under the floor; a louver installed on the floor of a room where laundry is hung to dry; a first shutter that opens and closes an opening in a first region which is part of the louver; a second shutter that opens and closes an opening in a second region which is another part of the louver different from the first region; a first drive unit that opens and closes the first shutter; a second drive unit that opens and closes the second shutter; a weight sensor that detects the weight of a first laundry item, which is the weight of laundry hung above the first region, and the weight of a second laundry item, which is the weight of laundry hung above the second region; and a controller, wherein the controller performs a determination process that determines the opening ratio of the first region and the opening ratio of the second region based on the first laundry item weight and the second laundry item weight; and an opening ratio change process that drives the first drive unit and the second drive unit based on the determined opening ratio.

[0100] [Note 2] The louvers described above extend along the direction of arrangement parallel to the floor surface, the first region and the second region are aligned in the direction of arrangement, and the system further comprises poles extending in the direction of arrangement, the weight sensor is a sheet-like pressure sensor installed on the pole and extending along the direction of arrangement, and the pressure sensor outputs pressure distribution information associated with its position and detected pressure, as described in Note 1.

[0101] [Note 3] The controller acquires the weight of the first laundry and the weight of the second laundry at predetermined sampling intervals, and the determination process includes: a first determination process that determines whether or not the laundry has been hung up using the weight sensor; a process that determines the opening ratio of both the first and second regions to be fully open based on the determination that the laundry has been hung up; a calculation process that calculates the overall rate of change, which is the time rate of change of the detected total laundry, the first individual rate of change, which is the time rate of change of the weight of the first laundry, and the second individual rate of change, which is the time rate of change of the weight of the second laundry, based on the fact that the rate of change of weight corresponding to the difference between the initial total laundry weight, which is the sum of the initial value of the weight of the first laundry and the initial value of the weight of the second laundry, and the detected total laundry weight, which is the sum of the weight of the first laundry and the weight of the second laundry, is greater than or equal to a predetermined threshold rate of change; and a second determination process that determines whether or not the first individual rate of change and the second individual rate of change are greater than or equal to the overall rate of change. An indoor drying system according to Appendix 1, comprising: a process of determining the opening ratio of the first region to be fully open based on the determination that the first individual rate of change is not greater than or equal to the overall rate of change; a process of determining the opening ratio of the first region to a predetermined opening ratio lower than fully open based on the determination that the first individual rate of change is greater than or equal to the overall rate of change; a process of determining the opening ratio of the second region to be fully open based on the determination that the second individual rate of change is not greater than or equal to the overall rate of change; and a process of determining the opening ratio of the second region to the predetermined opening ratio based on the determination that the second individual rate of change is greater than or equal to the overall rate of change.

[0102] 10... Indoor drying system 11... House 12... Drying room 15... Floor 16... Underfloor space 21... Air conditioning unit 30... Louver 31... Opening 33... Arrangement direction 34... Pole 35... Sliding direction 41... First area 42... Second area 43... Third area 44... Fourth area 45... First opening 46... Second opening 47... Third opening 48... Fourth opening 51... First drying area 52... Second drying area 53... Third drying area 54... Fourth drying area 60... Management device 61... CPU (controller) 62... Memory 65... Management program 66... ​​Weight sensor 71... First drive unit 72... Second drive unit 73... Third drive unit 74... Fourth drive unit 81... First shutter 82... Second shutter 83...Third shutter 84...Fourth shutter 90...Support mechanism

Claims

1. An indoor drying system comprising: an air conditioning unit that supplies heated air to the space under the floor; a louver installed on the floor of a room where laundry is hung to dry; a first shutter that opens and closes an opening in a first region which is part of the louver; a second shutter that opens and closes an opening in a second region which is another part of the louver different from the first region; a first drive unit that opens and closes the first shutter; a second drive unit that opens and closes the second shutter; a weight sensor that detects a first laundry weight which is the weight of laundry hung above the first region and a second laundry weight which is the weight of laundry hung above the second region; and a controller, wherein the controller performs a determination process that determines the opening ratio of the first region and the opening ratio of the second region based on the first laundry weight and the second laundry weight; and an opening ratio change process that drives the first drive unit and the second drive unit based on the determined opening ratio.

2. The louvers extend along a direction of arrangement parallel to the floor surface, the first region and the second region are aligned in the direction of arrangement, and the system further comprises a pole extending in the direction of arrangement, the weight sensor is a sheet-like pressure sensor installed on the pole and extending along the direction of arrangement, and the pressure sensor outputs pressure distribution information associated with its position and detected pressure, the indoor drying system according to claim 1.

3. The controller acquires the weight of the first laundry and the weight of the second laundry at predetermined sampling intervals, and the determination process includes: a first determination process that determines whether or not the laundry has been hung up using the weight sensor; a process that determines the opening ratio of both the first and second regions to be fully open based on the determination that the laundry has been hung up; a calculation process that calculates the overall rate of change, which is the time rate of change of the detected total laundry, the first individual rate of change, which is the time rate of change of the weight of the first laundry, and the second individual rate of change, which is the time rate of change of the weight of the second laundry, based on the fact that the rate of change of weight corresponding to the difference between the initial total laundry weight, which is the sum of the initial values ​​of the weight of the first laundry and the initial values ​​of the weight of the second laundry, and the first individual rate of change, which is the sum of the weight of the first laundry and the weight of the second laundry, is greater than or equal to a predetermined threshold rate of change; and a second determination process that determines whether or not the first individual rate of change and the second individual rate of change are greater than or equal to the overall rate of change. An indoor drying system according to claim 1, comprising: a process of determining the opening ratio of the first region to fully open based on the determination that the first individual rate of change is not greater than or equal to the overall rate of change; a process of determining the opening ratio of the first region to a predetermined opening ratio lower than fully open based on the determination that the first individual rate of change is greater than or equal to the overall rate of change; a process of determining the opening ratio of the second region to fully open based on the determination that the second individual rate of change is not greater than or equal to the overall rate of change; and a process of determining the opening ratio of the second region to the predetermined opening ratio based on the determination that the second individual rate of change is greater than or equal to the overall rate of change.

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