Residential ventilation systems and fragrance generators

Abstract

The present invention provides a residential ventilation system that allows for the selection of whether or not to emit fragrance, or the type of fragrance emitted, and that does not require electrical wiring work to the fragrance generating device. [Solution] The residential ventilation system includes an aroma generator 80 attached to the air intake grille. The aroma generator 80 comprises a case 81, a movable partition member 82, an elastic member 83, and an interlocking member 84. The movable partition member 82 is positioned within the case 81 so as to be movable in the vertical direction. The movable partition member 82 has a lower box 133 having an internal space 149 and an upper box 135 having an internal space 176. A first type of fragrance 98 is stored in the internal space 149. A second type of fragrance 99 is stored in the internal space 176. The movable partition member 82 moves vertically due to the interlocking member 84 moving downward in response to wind and the upward biasing force it receives from the elastic member 83. The type of fragrance changes as the wind force received by the interlocking member 84 changes.

Description

Technical Field

[0004] , , , , , , , , , ,

[0001] The present invention relates to a house ventilation system that ventilates a house while supplying air containing fragrance to a room, and a fragrance generator used in the house ventilation system.

Background Art

[0002] Patent Document 1 discloses a house ventilation system including a fragrance generator. This house ventilation system includes an outdoor air introduction duct, an exhaust duct, a ventilation device, a supply air duct, and a fragrance generator. The fragrance generator is attached to the supply air inlet on the ceiling. The fragrance generator contains a fragrance agent.

[0003] Patent Document 2 discloses a fragrance supply device capable of changing the type of fragrance. The fragrance supply device includes a cylindrical outer box having a bottom, a cylindrical storage container housed in the outer box, a step motor, and a control unit. The storage container is supported by the outer box so as to be rotatable around the central axis. The internal space of the storage container is partitioned into a plurality of chambers by a plurality of partitions extending radially from the center toward the side wall. One chamber does not contain a fragrance agent, and the other plurality of chambers contain fragrance agents of different types. A plurality of air outlets are opened in the outer wall of the storage container. On the other hand, only one air supply port is opened in the side wall of the outer box. The storage container is rotated by the step motor to a position where any one of the air outlets faces the air outlet of the outer box. By switching the rotation position of the storage container, the type of fragrance supplied by the fragrance supply device and whether to generate fragrance are changed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] When installing the fragrance supply device disclosed in Patent Document 2 into the air intake of a house, electrical wiring work is required in the house to supply power to the control unit and stepper motor. On the other hand, it is conceivable to manually rotate the storage container without using the control unit and stepper motor, but manually operating a fragrance supply device mounted on the ceiling would make it inconvenient to use.

[0006] This invention has been made in view of the circumstances described above, and one of its objectives is to make it possible to change whether or not to generate fragrance, or the type of fragrance generated. Another objective is to eliminate the need for electrical wiring work to fragrance generating devices in homes. [Means for solving the problem]

[0007] (1) The residential ventilation system according to the present invention is installed in a house and comprises a ventilation device having a blowing function that takes in outside air and sends it out, an air supply duct connecting the ventilation device and an air supply opening in the ceiling of the room, an operation panel that accepts user input operations, a controller that can control the airflow of the air supplied from the air supply opening to the room in two or more stages based on the input value from the operation panel, and an aroma generator. The fragrance generating device comprises a case having an internal space, having an air inlet and an air outlet connected to the internal space, wherein the air inlet is located in the airflow path supplied by the ventilation device; a partition movable member that divides the internal space into a first chamber and a second chamber capable of storing fragrances, and is arranged in the internal space so as to be movable between a first position and a second position; an elastic member that biases the partition movable member from the first position toward the second position; and an interlocking member that has a wind receiving section that receives the air supplied by the ventilation device, and is in contact with the partition movable member, and moves the partition movable member from the second position toward the first position by the wind force of the air. The first position is the position in which the first chamber communicates with the air outlet. The second position is the position in which the second chamber communicates with the air outlet.

[0008] The user, as a resident of the house, uses the control panel to set the ventilation rate, such as strong / normal / weak, or stop / ventilate. The ventilation rate is the amount of air supplied from the outside into the house per unit time, and represents the wind force. The movable partition member is set to the second position by the biasing force of the elastic member, and moves from the second position to the first position by the wind force of the air received by the wind receiving part. If an air freshener is placed in only one of the first or second rooms, the presence or absence of fragrance changes depending on the change in wind force. If different types of air fresheners are placed in the first and second rooms, the type of fragrance changes depending on the change in wind force. In other words, the residential ventilation system can change whether or not to generate fragrance, or the type of fragrance to generate, based on the operation of the control panel.

[0009] (2) The controller may be capable of controlling the airflow at the air intake in three or more stages based on the input value from the operation panel. The movable partition member is movable to the first position, the second position, and the third position. The third position is a position in which neither the first chamber nor the second chamber communicates with the air outlet. The interlocking member moves the movable partition member from the second position to the first position or the third position in accordance with the airflow force of the air received by the air receiving section.

[0010] When the user changes the airflow using the control panel, the movable partition member moves to one of three positions: the first, second, or third position, depending on the changed airflow. Different types of fragrances are stored in the first and second chambers. When the movable partition member is in the first or second position, the fragrance generator emits fragrance. The third position is a position where neither the first nor the second chamber communicates with the air outlet; therefore, when the movable partition member is in the third position, the fragrance generator does not emit fragrance. In other words, the residential ventilation system can change whether or not to emit fragrance, and the type of fragrance to emit, based on the airflow setting on the control panel.

[0011] (3) The controller may be capable of controlling the airflow at the air intake to a first airflow, which is the basic setting, a second airflow, which is stronger than the first airflow, and a third airflow, which is weaker than the first airflow, based on the input value from the operation panel. The interlocking member receives the air of the first airflow at the air receiving section and moves the partition movable member to the third position, receives the air of the second airflow at the air receiving section and moves the partition movable member to the first position, and receives the air of the third airflow at the air receiving section and moves the partition movable member to the second position.

[0012] When ventilation is performed at the default setting, the first airflow, unscented air is supplied to the rooms of the house. If the user desires to generate fragrance, they operate the control panel to change from the default setting, the first airflow, to the second or third airflow. Therefore, the residential ventilation system according to the present invention provides unscented ventilation under normal circumstances when the user does not intentionally operate the control panel, and generates fragrance only when the user intentionally operates the control panel.

[0013] (4) The residential ventilation system according to the present invention may further include a cylindrical air intake member that partitions the air intake, a guide member disposed within the air intake member and supporting the interlocking member so as to be movable along the vertical direction, and a cover member having a through hole into which the fragrance generating device is fitted and disposed below the air intake. The partition movable member partitions the internal space vertically and is supported by the case so as to be movable along the vertical direction. The elastic member biases the partition movable member upward with the case as a pivot point. The air inlet opens at the top of the case. The lower end of the interlocking member is inserted into the internal space of the case from the air inlet and contacts the partition movable member from above.

[0014] The lower end of the interlocking member is inserted into the internal space of the case through the air inlet and contacts the movable partition member from above. Therefore, the case, when pulled downwards through the through-hole in the cover member, separates from the interlocking member. In other words, the user can remove only the case from the cover member. After removing the case from the cover member, the user can replenish or replace the air freshener inside the case. As a result, maintenance such as replenishing and replacing the air freshener, as well as repairs and maintenance, becomes easier compared to when both the cover member and the interlocking member must be removed from the ceiling.

[0015] (5) The above control panel may display information about fragrance in correspondence with the wind speed.

[0016] Information regarding fragrances includes, for example, whether or not a fragrance is present and what type of fragrance it is. Since this fragrance information is displayed on the control panel in conjunction with the airflow speed, users can easily understand the relationship between airflow speed and the presence or type of fragrance and adjust the airflow accordingly. As a result, the usability of the residential ventilation system is improved.

[0017] (6) The fragrance generating device according to the present invention is a case having an internal space, having an air inlet and an air outlet connected to the internal space, wherein the air inlet is located in the airflow path of air supplied from the room's air intake; a partition movable member that divides the internal space into a first chamber and a second chamber capable of storing a fragrance, and is arranged in the internal space so as to be movable between a first position and a second position; an elastic member that biases the partition movable member from the first position toward the second position; and an interlocking member that has a wind receiving portion that receives the air supplied to the air intake, and is in contact with the partition movable member, and moves the partition movable member from the second position toward the first position by the wind force of the air. The first position is the position in which the first chamber communicates with the air outlet. The second position is the position in which the second chamber communicates with the air outlet.

[0018] This invention can also be considered as an aroma generator. [Effects of the Invention]

[0019] The residential ventilation system according to the present invention can generate fragrance or change the type of fragrance to be generated. Further, in the residential ventilation system according to the present invention, electrical wiring work to the air supply opening on the ceiling becomes unnecessary.

Brief Explanation of Drawings

[0020] [Figure 1] FIG. 1 is a schematic cross-sectional view of a house 11 equipped with a residential ventilation system 10 according to an embodiment. [Figure 2] FIG. 2 is a functional block diagram of the residential ventilation system 10. [Figure 3] FIGS. 3(A) to (C) are front views of an operation panel 60 according to an embodiment, and FIG. 3(D) is a front view of an operation panel 180 according to a modified example. [Figure 4] FIG. 4 is an enlarged view of a region IV surrounded by a dashed-dotted line in FIG. 1 and is a cross-sectional view of an air supply grill 70. [Figure 5] FIG. 5 is a perspective view of the air supply grill 70. [Figure 6] FIG. 6 is a perspective view of the air supply grill 70 with a cover member 74 removed. [Figure 7] FIG. 7 is a cross-sectional view of a fragrance generator 80. [Figure 8] FIG. 8 is an exploded perspective view of the fragrance generator 80. [Figure 9] FIG. 9 is an operation explanatory view of the fragrance generator 80.

Embodiments for Carrying Out the Invention

[0021] Hereinafter, embodiments of the present invention will be described. It should be noted that the embodiments described below are merely examples of the present invention, and it is needless to say that the embodiments of the present invention can be appropriately changed without changing the gist of the present invention.

[0022] [Overview of Residential Ventilation System 10] As shown in Figure 1, the residential ventilation system 10 described in this embodiment is attached to a house 11. The house 11 may be a private residence or an apartment building. Furthermore, the house 11 may be a single-story building or have multiple floors. In the example shown in Figure 1, the house 11 is a private residence and is single-story, having multiple rooms including room 12, a corridor 13, a sanitary room, and an entrance hall. Note that Figure 1 is a schematic diagram, and the illustration of rooms other than room 12, the sanitary room, the entrance hall, etc. is omitted.

[0023] House 11 is a so-called high-airtightness house, possessing high airtightness and insulation. When ventilation is not performed, the amount of outside air flowing into House 11 is small. Outside air refers to the air outside House 11. The residential ventilation system 10 constantly ventilates when the residents are at home. Ventilation means replacing some of the air inside House 11 with outside air.

[0024] House 11 is a house that employs so-called whole-house ventilation. Whole-house ventilation means that the entire house is ventilated, rather than ventilating the multiple rooms of the house individually. For whole-house ventilation, House 11 has an air intake 15, a vent 17, and an exhaust vent 19. The air intake 15 is opened in the ceiling 14 of room 12. The vent 17 is opened in the wall 16 that separates room 12 from the corridor 13. The exhaust vent 19 is opened in the wall 18 that partitions the corridor 13 or the entrance hall. Air supplied to room 12 from the air intake 15 flows into the corridor 13 or the entrance hall through the vent 17, and is discharged outside House 11 through the exhaust vent 19 in the corridor 13 or the entrance hall.

[0025] The house 11 is equipped with an air conditioning unit 27 as shown in Figure 2. The air conditioning unit 27 is not shown in Figure 1. The air conditioning unit 27 is located above the ceiling 14 of the corridor 13 or entrance hall, or under the floor.

[0026] The air conditioning unit 27 has an indoor unit 28 and an outdoor unit 29. The air conditioning unit 27 controls the temperature of the house 11. For example, a commercially available or existing air conditioning unit is used as the air conditioning unit 27. The air conditioning unit 27 may be attached to the house 11 as part of the residential ventilation system 10, or it may be attached to the house 11 separately from the residential ventilation system 10.

[0027] [Configuration of Residential Ventilation System 10] The residential ventilation system 10 includes an outside air inlet duct 31, an exhaust duct 32, a ventilation device 33, a supply air duct 36, an exhaust duct 37, and blower fans 41, 42, 43, and 44. The residential ventilation system 10 also includes a controller 50 and an operation panel 60 shown in Figure 2, and a supply air grille 70 and an aroma generator 80 shown in Figure 4.

[0028] The outside air inlet duct 31 shown in Figure 1 is a duct that brings outside air into the house 11. One end of the outside air inlet duct 31 is connected to the exterior wall 20 of the house 11. An opening 21 is made in the exterior wall 20 that connects the inside of the outside air inlet duct 31 to the outside. The other end of the outside air inlet duct 31 is connected to a ventilation device 33. Outside air flows into the ventilation device 33 through the opening 21 and the outside air inlet duct 31.

[0029] The blower fan 41 is located in the opening 21. However, the blower fan 41 may also be located inside the outside air inlet duct 31. The blower fan 41 generates an airflow in the outside air inlet duct 31 from the opening 21 toward the ventilation device 33. The black arrows shown in Figures 1, 4, and 9 indicate the airflow.

[0030] The exhaust duct 32 is a duct that discharges air from inside the house 11 to the outside. One end of the exhaust duct 32 is connected to the exterior wall 20 of the house 11. An opening 22 that connects the inside of the exhaust duct 32 to the outside is opened in the exterior wall 20. The other end of the exhaust duct 32 is connected to the ventilation device 33. Air from inside the house 11 is discharged to the outside of the house 11 through the exhaust duct 32 and the opening 22.

[0031] The blower fan 42 is located in the opening 22. However, the blower fan 42 may also be located inside the exhaust duct 32. The blower fan 42 generates an airflow in the exhaust duct 32 from the ventilation device 33 toward the opening 22.

[0032] The ventilation device 33 is located above the ceiling 14 of a corridor 13 or entrance hall, or under the floor. In the example shown in Figure 1, the ventilation device 33 is located under the floor. The ventilation device 33 has a heat exchanger 34. The heat exchanger 34 performs heat exchange between air flowing in from the outside through the outside air inlet duct 31 and air being discharged to the outside through the exhaust duct 32.

[0033] The ventilation system 33 has a blower fan 35. The blower fan 35 sends air that has flowed in through the outside air inlet duct 31 and has undergone heat exchange in the heat exchanger 34 to the supply air duct 36. In other words, the ventilation system 33 has a blower function. Note that the blower fans 41, 42, 43, and 44 may be part of the ventilation system 33.

[0034] For example, a commercially available or existing ventilation device can be used as the ventilation device 33.

[0035] The supply air duct 36 is a duct that guides heat-exchanged outside air into room 12. One end of the supply air duct 36 is connected to the ventilation device 33. The supply air duct 36 extends from the ventilation device 33 to the ceiling 14 of room 12. The other end of the supply air duct 36 is connected to the supply air grille 70 attached to the ceiling 14 of room 12. In Figure 1, only the supply air duct 36 connected to room 12 is shown, and the illustration of the supply air ducts 36 connecting the ventilation device 33 to the entrance, sanitary room, corridor, etc. is omitted.

[0036] The blower fan 43 is located inside the supply air duct 36. Together with the blower fan 35 of the ventilation device 33, the blower fan 43 generates an airflow within the supply air duct 36 from the ventilation device 33 toward the supply air grille 70.

[0037] The exhaust duct 37 is a duct that guides air from inside the house 11 to the ventilation device 33. One end of the exhaust duct 37 is connected to a wall 18 that partitions the corridor 13. An exhaust port 19, which connects the inside of the exhaust duct 37 to the inside of the corridor 13, is opened in the wall 18. The other end of the exhaust duct 37 is connected to the ventilation device 33. Air from inside the house 11 is guided to the ventilation device 33 through the exhaust port 19 and the exhaust duct 37.

[0038] The blower fan 44 is located inside the exhaust duct 37. The blower fan 44 generates an airflow within the exhaust duct 37 that flows from the exhaust port 19 towards the ventilation device 33.

[0039] [Controller 50] The controller 50 shown in Figure 2 is a management terminal equipped with a microcomputer. Alternatively, the controller 50 may be a personal computer or a tablet. The controller 50 is installed in the house 11.

[0040] The controller 50 includes a central processing unit (CPU) 51, memory 52, and a communication interface 53. The CPU 51, memory 52, and communication interface 53 are interconnected by a communication bus (not shown).

[0041] Memory 52 stores the operating system OS 54, the control program 55, and various control values. The OS 54 and the control program 55 are executed by the CPU 51. The OS 54 and the control program 55 use various control values ​​to control the operation of the air conditioning unit 27, the ventilation unit 33, the blower fans 41, 42, 43, and 44, and the operation panel 60. Details of the control values ​​will be described later.

[0042] The communication interface 53 is wired to the ventilation device 33, the blower fans 41, 42, 43, 44, and the control panel 60 via a communication cable. Alternatively, the communication interface 53 is wirelessly connected to the ventilation device 33, the blower fans 41, 42, 43, 44, and the control panel 60.

[0043] [Control Panel 60] As shown in Figure 3(A), the control panel 60 includes a touch panel 61, a first operation button 62, a second operation button 63, and an operation button 64. The control panel 60 also includes a communication interface 65 as shown in Figure 2.

[0044] The operation button 64 is a button that receives instructions to start and stop the residential ventilation system 10. Based on the operation of the operation button 64, the controller 50 starts or stops the drive control of the air conditioning unit 27, the ventilation unit 33, and the blower fans 41, 42, 43, and 44. The controller 50 also starts or stops the display control of the touch panel 61 based on the operation of the operation button 64.

[0045] The touch panel 61 has a display 66 and a transparent, plate-shaped touch sensor 67 superimposed on the display 66.

[0046] The touch panel 61 displays the settings display screen shown in Figures 3(A) to (C). The settings display screen includes an "Air Conditioning Settings" icon 68 and the text "Cooling," "25°C," and "Operating." The settings display screen also includes an "Aroma Settings" icon 69 and the text "No Aroma (Normal)" and "Operating."

[0047] The first operation button 62 and the second operation button 63 are buttons that accept input for setting the air conditioning temperature by the air conditioning unit 27. The first operation button 62 is marked with an upward-pointing graphic and accepts an increase in the numerical value. The second operation button 63 is marked with a downward-pointing graphic and accepts a decrease in the numerical value.

[0048] The control panel 60 receives user input through the touch sensor 67, the first operation button 62, and the second operation button 63. The settings entered into the control panel 60 through the touch sensor 67, the first operation button 62, and the second operation button 63 are examples of input values. The control panel 60 transmits the input values, which are the entered settings, to the controller 50.

[0049] When a resident user wants to change the air conditioning temperature, they select the "Air Conditioning Settings" icon 68 displayed on the touch panel 61. The control panel 60 flashes the text "25℃" based on the selection of the "Air Conditioning Settings" icon 68. The control panel 60 also enables the user to change the numerical value using the first operation button 62 and the second operation button 63. The user changes the air conditioning temperature setting by operating either the first operation button 62 or the second operation button 63.

[0050] If the user wishes to change the presence or type of fragrance, they select the "Fragrance Settings" icon 69 displayed on the touch panel 61. Based on the selection of the "Fragrance Settings" icon 69, the operation panel 60 flashes the text "No Fragrance (Normal)". The operation panel 60 also enables the first operation button 62 and the second operation button 63 to change the presence or type of fragrance. The user operates the first operation button 62 or the second operation button 63 to change the fragrance setting to "First Fragrance (Strong)" or "Second Fragrance (Weak)".

[0051] The words "Normal" in Figure 3(A), "Strong" in Figure 3(B), and "Weak" in Figure 3(C) indicate the ventilation rate. The ventilation rate means the amount of air blown out from the air intake 15 per unit time. The amount of air blown out from the air intake 15 per unit time is also a quantity that indicates the wind force. In other words, the words "Normal," "Strong," and "Weak" indicate the ventilation rate and the wind force. The words "Normal," "Strong," and "Weak" are examples of information that indicates the wind force.

[0052] The word "Normal" shown in Figure 3(A) means that ventilation is performed at the default wind speed. The default wind speed is determined by the first control value group pre-stored in memory 52. ​​The first control value group refers to the group of control values ​​for the ventilation device 33 and blower fans 41, 42, 43, and 44 that result in the default wind speed.

[0053] When the residential ventilation system 10 starts up, the controller 50 drives the ventilation device 33 and the blower fans 41, 42, 43, and 44 using the first set of control values, and performs ventilation at the basic set wind speed. The basic set wind speed is an example of the first wind speed.

[0054] When the user changes the setting to "First Aroma (Strong)" via the control panel 60, the controller 50 performs drive control using the second control value group. The second control value group refers to a group of control values ​​for the ventilation device 33 and blower fans 41, 42, 43, and 44 that result in a wind force stronger than the basic setting wind force. A wind force stronger than the basic setting wind force is an example of the second wind force.

[0055] When the user changes the setting to "Second Aroma (Weak)" via the control panel 60, the controller 50 performs drive control using the third control value group. The third control value group refers to a group of control values ​​for the ventilation device 33 and blower fans 41, 42, 43, and 44 that result in a wind force weaker than the basic setting. A wind force weaker than the basic setting is an example of the third wind force.

[0056] Thus, the controller 50 can control the airflow force supplied to the room 12 in three stages.

[0057] In addition to the first, second, and third control value groups, memory 52 also stores other control values, such as the control values ​​for the air conditioning unit 27.

[0058] The words "No fragrance" shown in Figure 3(A) indicate that the fragrance generator 80 does not produce fragrance, and fragrance-free air is supplied to room 12. The words "No fragrance" correspond to the words "Normal." That is, the words "No fragrance (Normal)" shown in Figure 3(A) indicate that when ventilation is performed by the airflow setting, fragrance-free air is supplied to room 12.

[0059] The words "First Fragrance" shown in Figure 3(B) indicate that the fragrance generator 80 generates a first type of fragrance, and that air containing the first type of fragrance is supplied to the room 12. The first type of fragrance refers to the fragrance generated by the first type of fragrance agent 98 housed in the case 81 of the fragrance generator 80 shown in Figure 7.

[0060] As shown in Figure 3(B), the words "First Aroma" correspond to the word "Strong." In other words, the words "First Aroma (Strong)" indicate that when ventilation is performed by a second wind force stronger than the basic setting, air containing the first type of aroma is supplied to room 12.

[0061] The words "Second Aroma" shown in Figure 3(C) indicate that the aroma generator 80 generates a second type of aroma, and that air containing the second type of aroma is supplied to the room 12. The second type of aroma refers to the aroma generated by the second type of fragrance agent 99 housed in the case 81 of the aroma generator 80 shown in Figure 7.

[0062] As shown in Figure 3(C), the words "Second Aroma" correspond to the word "Weak". In other words, the words "Second Aroma (Weak)" indicate that when ventilation is performed with a third wind force that is weaker than the basic setting, air containing the second type of aroma is supplied to room 12.

[0063] The words "No fragrance," "First fragrance," and "Second fragrance" are examples of information regarding fragrance. In other words, the control panel 60 displays information regarding fragrance in correspondence with the airflow.

[0064] The user recognizes the correspondence between ventilation volume and the presence or absence of fragrance and the type of fragrance through the text "No fragrance (normal)", "First fragrance (strong)", and "Second fragrance (weak)". If the user wants to change the presence or absence of fragrance or the type of fragrance, they select the setting using the text "No fragrance", "First fragrance", or "Second fragrance". If the user wants to change the ventilation volume, they select the setting using the text indicating the ventilation volume: "Normal", "Strong", or "Weak".

[0065] [Air Intake Grille 70] The air supply grille 70 shown in Figures 4, 5, and 6 is a component that connects the inside of the air supply duct 36 to the inside of the room 12. The air supply grille 70 is attached to the ceiling 14.

[0066] The air supply grille 70 comprises an air intake member 71, a ceiling mounting member 72, a frame 73, a cover member 74, and guide members 91 and 92.

[0067] The air intake member 71 is cylindrical with its central axis aligned vertically. The air intake member 71 is positioned in a circular opening 23 in the ceiling 14. The opening at the lower end of the air intake member 71 is the air intake 15. In other words, the air intake member 71 is a component that partitions the air intake 15. The air intake member 71 may also be rectangular in shape.

[0068] The end of the air supply duct 36 faces downward. The air intake member 71 is located below the end of the air supply duct 36. The end of the air supply duct 36 is connected to the upper end of the air intake member 71. For example, the end of the air supply duct 36 is connected to the upper end of the air intake member 71 by a connecting member (not shown). Alternatively, the upper end of the air intake member 71 may be fitted into the air supply duct 36. Alternatively, the end of the air supply duct 36 may be fitted into the air intake member 71. The inside of the air supply duct 36 and the inside of the air intake member 71 are in communication. Air flowing through the air supply duct 36 flows into the air intake member 71.

[0069] The ceiling mounting member 72 is rectangular in shape. The ceiling mounting member 72 has a circular opening 75 in the center. The upper surface, which is the main surface of the ceiling mounting member 72, is in contact with the lower surface of the ceiling 14. The ceiling mounting member 72 is attached to the ceiling 14 using fasteners such as screws. The circular opening 75 of the ceiling mounting member 72 is located below the opening at the lower end of the air intake member 71. Air flowing from the air intake duct 36 into the air intake member 71 passes through the opening 75 of the ceiling mounting member 72.

[0070] The air direction member 76 shown in Figure 6 is attached to the lower surface of the ceiling mounting member 72. The air direction member 76 is strip-shaped. The air direction member 76 protrudes downward from the lower surface of the ceiling mounting member 72. The air direction member 76 restricts the direction of air flowing into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74, which will be described later.

[0071] The frame 73 is rectangular in shape. The frame 73 surrounds the rectangular plate-shaped ceiling mounting member 72. The frame 73 is a so-called decorative member.

[0072] The cover member 74 is a rectangular plate of approximately the same size as the ceiling mounting member 72. The cover member 74 is positioned below the ceiling mounting member 72, spaced apart from it. The cover member 74 is attached to the ceiling mounting member 72 by bolts 24 and nuts 25. That is, the upper surface, which is the main surface of the cover member 74, faces the ceiling mounting member 72 in the vertical direction. Air passing through the opening 75 of the ceiling mounting member 72 flows into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74. The direction of the air flowing into the room 12 is limited by the air direction member 76.

[0073] The cover member 74 has a through hole 77 in the center. The through hole 77 penetrates the cover member 74 in the vertical direction. The fragrance generating device 80, described later, is fitted into the through hole 77. In other words, the through hole 77 is the hole into which the fragrance generating device 80 is installed. The through hole 77 is closed by the installed fragrance generating device 80.

[0074] Guide members 91 and 92 are located inside the cylindrical air intake member 71. Guide members 91 and 92 are identical in shape. Guide members 91 and 92 have a shaft 93 and a ring 94. Guide members 91 and 92 are arranged vertically. Guide member 91 is located above guide member 92 and spaced apart from it.

[0075] One end of the shaft 93 abuts against the inner circumferential surface of the cylindrical air intake member 71 and is fixed to that inner circumferential surface. The other end of the shaft 93 is located at the center of the cylindrical air intake member 71. In other words, the shaft 93 extends from the inner circumferential surface of the air intake member 71 toward the center of the air intake member 71.

[0076] The ring 94 is annular in shape. The ring 94 is fixed to the other end of the shaft 93. That is, the ring 94 is located in the center of the cylindrical air intake member 71. The shaft 86 of the interlocking member 84 of the fragrance generating device 80, which will be described later, is inserted through the ring 94. Guide members 91 and 92 support the interlocking member 84 so that it can move along the vertical direction.

[0077] [Fragrance Generator 80] As shown in Figure 7, the fragrance generating device 80 comprises a case 81, a movable partition member 82, an elastic member 83, and an interlocking member 84.

[0078] As shown in Figure 4, the interlocking member 84 has a wind receiving plate 85 and a shaft 86.

[0079] The wind receiving plate 85 is a circular or rectangular plate. The wind receiving plate 85 is located at the center of the cylindrical air intake member 71. The wind receiving plate 85 is also positioned with its main surface facing upwards. The wind receiving plate 85 receives the air flowing into the air intake member 71 on its upper surface. The interlocking member 84 is pushed downwards by the wind received by the upper surface of the wind receiving plate 85. The wind receiving plate 85 is an example of a wind receiving section.

[0080] The shaft 86 protrudes downward from the center of the lower surface of the wind-receiving plate 85. The shaft 86 is inserted through two rings 94. The interlocking member 84 is supported by guide members 91 and 92 so as to be movable along the vertical direction. The interlocking member 84 is moved downward by the wind received by the wind-receiving plate 85. The interlocking member 84 is also moved upward by the biasing force of the elastic member 83 shown in Figure 7. The force with which the elastic member 83 biases the interlocking member 84 upward is constant. Therefore, whether the interlocking member 84 moves up or down depends on the magnitude of the wind force of the air received by the wind-receiving plate 85. Further details will be described later.

[0081] As shown in Figures 7 and 8, the case 81 has a case body 101, a lid 102, four guide pins 103, and an engagement mechanism 104.

[0082] The case body 101 has a bottom plate 111 and four side walls 112, 113, 114, and 115. Side wall 112 faces side wall 114. Side wall 113 faces side wall 115. In other words, the case body 101 is a rectangular box shape with an upper opening 116 and an internal space 117.

[0083] The case body 101 has a shielding plate 118 bridged between the upper end of the side wall 112 and the upper end of the side wall 114. The shielding plate 118 is spaced apart from the side walls 113 and 114. The shielding plate 118 is located closer to the side wall 114 than to the side wall 113. The shielding plate 118 divides the upper opening 116 into a large opening 119 and a small opening, which is an air inlet 121.

[0084] The large opening 119 is partitioned by side walls 112, 113, 114 and a shielding plate 118. The air inlet 121 is partitioned by side walls 112, 114, 115 and a shielding plate 118.

[0085] In this embodiment, the direction that lies horizontally and is perpendicular to the main surface of the shielding plate 118 is referred to as the first direction 8. The direction that lies horizontally and along the main surface of the shielding plate 118 is referred to as the second direction 9.

[0086] The lid 102 rests on the upper ends of the side walls 112, 113, 114 and the shielding plate 118. The lid 102 closes the large opening 119. The lid 102 is removed from the case body 101 when refilling or replacing the air freshener.

[0087] The air inlet 121 is part of the upper opening 116 and opens to the top of the case body 101. The air inlet 121 communicates with the internal space 117 of the case 81. Air that has passed through the air intake member 71 flows into the internal space 117 from the air inlet 121.

[0088] The lower end of the shaft 86 of the interlocking member 84 is inserted into the air inlet 121. In other words, the air inlet 121 is an opening into which air flows and into which the shaft 86 is inserted.

[0089] The shielding plate 118 is spaced apart from the bottom plate 111. Air flowing into the internal space 117 from the air inlet 121 passes under the shielding plate 118 and flows towards the side wall 113. The side wall 113 has an air outlet 122. The air outlet 122 penetrates the side wall 113 in the first direction 8. That is, the air outlet 122 is connected to the internal space 117. Air flowing into the internal space 117 from the air inlet 121 flows out to the outside from the air outlet 122.

[0090] The case body 101 has four bosses 123. The bosses 123 protrude upward from the bottom plate 111 of the case body 101. The four bosses 123 are located at the four corners of the bottom plate 111. The bosses 123 have recessed mounting holes (not shown) that are recessed from the top surface.

[0091] The lower end of the guide pin 103 is fitted into the insertion hole of the boss 123. That is, the four guide pins 103 protrude upward from the four corners of the base plate 111 and are fixed to the base plate 111. The four guide pins 103 support the partition movable member 82, which will be described later, so that it can move in the vertical direction.

[0092] The engagement mechanism 104 has the function of engaging the case 81 with the cover member 74. The engagement mechanism 104 has an engagement projection 124, an extension piece 125, an elastic piece 126, an engagement claw 127, and gripping pieces 128 and 129.

[0093] The engaging projection 124 protrudes outward from the lower end of the outer surface of the side wall 113.

[0094] The extension piece 125 protrudes outward from the lower end of the outer surface of the side wall 115. The elastic piece 126 protrudes upward from the tip of the extension piece 125. The engaging claw 127 protrudes toward the side wall 105 from the tip of the elastic piece 126.

[0095] On the other hand, the cover member 74 has an engaging projection 131 that engages with the engaging projection 124, and an engaging projection 132 that engages with the engaging claw 127.

[0096] The pinch piece 128 protrudes downward from the tip of the extension piece 125. On the other hand, the pinch piece 129 protrudes downward from the base plate 111. The pinch piece 129 faces the pinch piece 128 in the first direction 8. The user, for example, pinches the pinch pieces 128 and 129 with their index finger and thumb, causing the extension piece 125 and elastic piece 126 to elastically deform. As a result, the engagement between the engaging claw 127 and the engaging projection 132 is released. While holding the pinch pieces 128 and 129, the user moves the case 81 downward and pulls the case 81 out of the through hole 77 of the cover member 74. After refilling or replacing the air freshener in the case 81, the user pushes the case 81 into the through hole 77 of the cover member 74 from below. When the case 81 is pushed into the through hole 77, the extension piece 125 and the elastic piece 126 undergo elastic deformation. Due to the elastic deformation of the extension piece 125 and the elastic piece 126, the engaging projection 124 engages with the engaging projection 131, and the engaging claw 127 engages with the engaging projection 132. In other words, the case 81 is attached to the cover member 74. The case 81 is attached to and detached from the cover member 74 by a so-called snap-fit ​​mechanism.

[0097] When case 81 is removed from cover member 74, interlocking member 84 loses its support and moves downward due to its own weight. Interlocking member 84 is supported by guide member 91 when air receiving plate 85 contacts ring 94 of guide member 91. With interlocking member 84 supported by guide member 91, the lower end of shaft 86 of interlocking member 84 protrudes downward from through hole 77 of cover member 74. The user can see the lower end of shaft 86 protruding from through hole 77. The user inserts the visible lower end of shaft 86 into the air inlet 121 of case 81, which is held in the hand, and pushes case 81 into through hole 77 from below.

[0098] The through-hole 77 in the cover member 74 into which the case 81 is fitted is located at the center of the cover member 74. In other words, the case 81 is located directly below the air intake member 71. That is, the case 81 is located in the airflow path for air that flows downwards within the air intake member 71.

[0099] The movable partition member 82 is housed in the internal space 117 of the case 81. The movable partition member 82 is a member that partitions the internal space 117 of the case 81.

[0100] The movable partition member 82 has a lower box 133, an intermediate box 134, and an upper box 135.

[0101] The lower box 133 has a bottom plate 141 and four side walls 142, 143, 144, and 145. Side walls 142 and 144 face each other in the second direction 9. Side walls 143 and 145 face each other in the first direction 8. That is, the lower box 133 is a rectangular box shape with an upper opening 148 and an internal space 149. The internal space 149 of the lower box 133 houses a second type of air freshener 99. The internal space 149 of the lower box 133 is an example of a second chamber. Note that the air fresheners 98 and 99 are not shown in Figure 8.

[0102] The distance between the outer surfaces of side walls 142 and 144 in the second direction 9 is slightly shorter than the distance between the inner surfaces of side walls 112 and 114 in the second direction 9. Also, the distance between the outer surfaces of side walls 143 and 145 in the first direction 8 is sufficiently shorter than the distance between the inner surfaces of side walls 113 and 115 in the first direction 8. Furthermore, the lengths of side walls 142, 143, 144, and 145 in the vertical direction are sufficiently shorter than the lengths of side walls 112, 113, 114, and 115 in the vertical direction. Therefore, the lower box 133 can be housed inside the case body 101 with the outer surfaces of side walls 142 and 144 in close proximity to the inner surfaces of side walls 112 and 114 of the case body 101.

[0103] The lower box 133 has extension plates 146 and 147. Extension plate 146 protrudes outward from the lower end of the outer surface of the side wall 143. Extension plate 147 protrudes outward from the lower end of the outer surface of the side wall 145. Extension plate 147 is located below the shielding plate 118.

[0104] The extension plate 146 has two through holes 151. The extension plate 147 also has two through holes 151. The through holes 151 are located at the ends of the extension plates 146 and 147, and at both ends in the second direction 9. In other words, the four through holes 151 are located at the four corners of the lower box 133.

[0105] The through-hole 151 penetrates the extension plates 146 and 147 in the vertical direction. The guide pin 103 described above is inserted through the through-hole 151. The lower box 133 is supported so as to be movable along the vertical direction by the four guide pins 103 inserted through the four through-holes 151.

[0106] The extension plate 147 is located directly below the air inlet 121. The lower end of the shaft 86 of the interlocking member 84, as described above, is in contact with the upper surface of the extension plate 147. When the interlocking member 84 is pushed downward by wind pressure, the extension plate 147 is pushed downward by the interlocking member 84. That is, the case 81 moves downward in conjunction with the interlocking member 84. When the wind pressure received by the wind receiving plate 85 of the interlocking member 84 weakens, the case 81 and the interlocking member 84 move upward due to the biasing force of the elastic member 83, which will be described later.

[0107] The lower end of the shaft 86 of the interlocking member 84 and the extension plate 147 are only in contact with each other and are not fixed to each other. In other words, the interlocking member 84 and the case 81 can move toward and away from each other. Therefore, the case 81 can be separated from the interlocking member 84 and removed from the cover member 74.

[0108] The distance between the tips of the extension plates 146 and 147 in the first direction 8 is slightly shorter than the distance between the inner surfaces of the side walls 113 and 115 in the first direction 8. That is, the tip of extension plate 146 is close to the side wall 113 of the case body 101, and the tip of extension plate 147 is close to the side wall 115 of the case body 101. The distance between the side ends of extension plates 146 and 147 in the second direction 9 is slightly shorter than the distance between the inner surfaces of the side walls 112 and 114 in the second direction 9. That is, the side ends of extension plates 146 and 147 are close to the side walls 112 and 114. The extension plates 146 and 147, which are close to the side walls 112, 113, 114, and 115, suppress the flow of air below the lower box 133.

[0109] The side wall 143 has a plurality of ventilation holes 152. The ventilation holes 152 penetrate the side wall 143 in the first direction 8. The side wall 145 has a plurality of ventilation holes 153. The ventilation holes 153 penetrate the side wall 145 in the first direction 8. Air flowing into the internal space 117 of the case 81 from the air inlet 121 flows into the internal space 149 of the lower box 133 through the ventilation holes 153. The air that has flowed into the internal space 149 is scented by a second type of fragrance 99 and then flows out of the case 81 through the ventilation holes 152 and the air outlet 122.

[0110] The intermediate box 134 has a bottom plate 161 and four side walls 162, 163, 164, and 165. Side walls 162 and 164 face each other in the second direction 9. Side walls 163 and 165 face each other in the first direction 8. In other words, the intermediate box 134 is rectangular in shape with an internal space 166 and an upper opening 167.

[0111] The distance between the outer surfaces of side walls 162 and 164 in the second direction 9 is equal to the distance between the outer surfaces of side walls 142 and 144 of the lower box 133 in the second direction 9. Also, the distance between the outer surfaces of side walls 163 and 165 in the first direction 8 is equal to the distance between the outer surfaces of side walls 163 and 165 of the lower box 133 in the first direction 8. The intermediate box 134 is placed on top of the lower box 133 with the lower surface of its bottom plate 161 in contact with the upper ends of the side walls 142, 143, 144, and 145 of the lower box 133. That is, the bottom plate 161 of the intermediate box 134 closes the upper opening 148 of the lower box 133.

[0112] The internal space 149 of the lower box 133 is partitioned by the bottom plate 141 of the lower box 133, the four side walls 142, 143, 144, and 145, and the bottom plate 161 of the intermediate box 134. The internal space 149 of the lower box 133 is not completely sealed and is open by a plurality of ventilation holes 152 and a plurality of ventilation holes 153.

[0113] The lengths of the side walls 162, 163, 164, and 165 in the vertical direction are sufficiently shorter than the lengths of the side walls 112, 113, 114, and 115 of the case body 101 in the vertical direction. Therefore, the intermediate box 134 can be housed inside the case body 101 with the outer surfaces of the side walls 162 and 164 in close proximity to the side walls 112 and 114 of the case body 101.

[0114] The intermediate box 134 is located between the side wall 113 and the shielding plate 118 of the case body 101 in the first direction 8. The intermediate box 134 has an extension plate 168 that closes the gap between the intermediate box 134 and the side wall 113. The extension plate 168 protrudes outward from the lower end of the outer surface of the side wall 163. The distance between the tip of the extension plate 168 and the outer surface of the side wall 165 is slightly shorter than the distance between the inner surface of the side wall 113 of the case body 101 and the shielding plate 118. That is, the tip of the extension plate 168 is close to the side wall 113, and the side wall 165 is close to the shielding plate 118. Also, the distance between the side ends of the extension plate 168 in the second direction 9 is slightly shorter than the distance between the inner surfaces of the side walls 112 and 114 of the case body 101. In other words, the side ends of the extension plate 168 are close to the side walls 112 and 114 of the case body 101. The extension plate 168 suppresses the passage of air between the intermediate box 134 and the side walls 112, 113, and 114 of the case body 101.

[0115] The extension plate 168 has two notches 169 to avoid contact with the guide pin 103. When the partition movable member 82 is in the second position shown in Figure 9(A), the notches 169 are located directly above the guide pin 103. When the partition movable member 82 is in the third position shown in Figure 9(B) or the first position shown in Figure 9(C), the guide pin 103 is fitted into the notches 169.

[0116] The air freshener is not stored in the internal space 166 of the intermediate box 134. Therefore, unlike the lower box 133, the side walls 163 and 165 of the intermediate box 134 do not have ventilation holes.

[0117] The upper box 135 has a bottom plate 171 and four side walls 172, 173, 174, and 175. Side walls 172 and 174 face each other in a second direction 9. Side walls 173 and 175 face each other in a first direction 8. That is, the upper box 135 is a rectangular box shape having an internal space 176 and an upper opening 177. A first type of fragrance 98 is stored in the internal space 176. The first type of fragrance 98 is a fragrance that emits a different type of fragrance than the second type of fragrance 99. The internal space 176 of the upper box 135 is an example of a first chamber.

[0118] The distance between the outer surfaces of the side walls 172 and 174 in the first direction 8 is equal to the distance between the outer surfaces of the side walls 162 and 164 of the intermediate box 134 in the second direction 9. Also, the distance between the outer surfaces of the side walls 173 and 175 in the first direction 8 is equal to the distance between the outer surfaces of the side walls 163 and 165 of the intermediate box 134 in the first direction 8. The upper box 135 is placed on top of the intermediate box 134 with the lower surface of its bottom plate 171 in contact with the upper ends of the side walls 162, 163, 164, and 165 of the intermediate box 134. That is, the bottom plate 171 of the upper box 135 closes the upper opening 167 of the intermediate box 134. The internal space 166 of the intermediate box 134 is completely sealed by the upper box 135.

[0119] The lengths of the side walls 172, 173, 174, and 175 in the vertical direction are sufficiently shorter than the lengths of the side walls 112, 113, 114, and 115 of the case body 101 in the vertical direction. Therefore, the upper box 135 can be housed inside the case body 101 with the side walls 172 and 174 in close proximity to the side walls 112 and 114 of the case body 101.

[0120] The side wall 173 has a plurality of ventilation holes 154. The ventilation holes 154 penetrate the side wall 173 in the first direction 8. The side wall 175 has a plurality of ventilation holes 155. The ventilation holes 155 penetrate the side wall 175 in the first direction 8. Air flowing into the internal space 117 of the case 81 from the air inlet 121 flows into the internal space 176 of the upper box 135 through the ventilation holes 155. The air that has flowed into the internal space 176 is fragranced by the first type of fragrance agent 98 and then flows out of the case 81 through the ventilation holes 154 and the air outlet 122.

[0121] The upper box 135 is located between the side wall 113 of the case body 101 and the shielding plate 118 in the first direction 8. The upper box 135 has an extension plate 178 that closes the gap between the upper box 135 and the side wall 113. The extension plate 178 protrudes outward from the lower end of the outer surface of the side wall 173. The distance between the tip of the extension plate 178 and the outer surface of the side wall 175 in the first direction 8 is slightly shorter than the distance between the inner surface of the side wall 113 and the shielding plate 118 in the first direction 8. That is, the tip of the extension plate 178 is close to the side wall 113, and the side wall 115 is close to the shielding plate 118. The extension plate 178 suppresses the passage of air between the upper box 135 and the side wall 113 of the case body 101.

[0122] The extension plate 178 has two notches 179 to avoid contact with the guide pin 103. When the partition movable member 82 is in the first position shown in Figure 9(C) or the third position shown in Figure 9(B), the notches 179 are located directly above the guide pin 103. When the partition movable member 82 is in the second position shown in Figure 9(A), the guide pin 103 is fitted into the notches 179.

[0123] The movable partition member 82 divides the internal space 117 of the case 81 into the internal space 149 of the lower box 133 and the internal space 176 of the upper box 135. The movable partition member 82 is also supported by a guide pin 103 so as to be movable along the vertical direction. In other words, the movable partition member 82 is a movable member that divides the internal space 117 of the case 81 into multiple spaces.

[0124] The movable partition member 82 is supported by four guide pins 103 so as to be movable along the vertical direction. The movable partition member 82 moves along the vertical direction between the second position shown in Figure 9(A), the third position shown in Figure 9(B), and the first position shown in Figure 9(C). The second position is the upper limit position, the first position is the lower limit position, and the third position is a position between the second and first positions.

[0125] The elastic member 83 is a coil spring. However, the elastic member 83 may be other types of elastic members, such as a torsion coil spring, a leaf spring, or rubber. The lower end of the elastic member 83 is in contact with the bottom plate 111 of the case body 101. The upper end of the elastic member 83 is in contact with the bottom plate 141 of the lower box 133 of the movable partition member 82. The elastic member 83 is positioned in a compressed state from its natural length. The elastic member 83 biases the movable partition member 82 upward from the first position to the second position, with the bottom plate 111 of the case body 101 as the pivot point.

[0126] The first position shown in Figure 9(C) is the position of the movable partition member 82 at the "strong" ventilation rate described above. The second position shown in Figure 9(A) is the position of the movable partition member 82 at the "weak" ventilation rate described above. The third position shown in Figure 9(B) is the position of the movable partition member 82 at the "normal" ventilation rate described above. Further details will be described later.

[0127] In the first position shown in Figure 9(C), the internal space 176 of the upper box 135 is in communication with the air inlet 121 through the ventilation hole 155. The internal space 176 is also in communication with the air outlet 122 through the ventilation hole 154 and the upper opening 177. That is, air flowing from the air inlet 121 into the internal space 117 of the case 81 flows into the internal space 176 of the upper box 135 through the ventilation hole 155. This air is then imparted with the first type of fragrance in the internal space 176 and then flows out to the outside through the ventilation hole 154 and the air outlet 122. In other words, when the ventilation rate is set to "high" and the partition movable member 82 is in the first position, air imparted with the first type of fragrance is supplied to the room 12.

[0128] In the second position shown in Figure 9(A), the internal space 149 of the lower box 133 is in communication with the air inlet 121 through the ventilation hole 153. The internal space 149 is also in communication with the air outlet 122 through the ventilation hole 152. That is, air flowing from the air inlet 121 into the internal space 117 of the case 81 flows into the internal space 149 of the lower box 133 through the ventilation hole 153. This air is then imparted with the second type of fragrance in the internal space 149 before flowing out to the outside through the ventilation hole 152 and the air outlet 122. In other words, when the ventilation rate is set to "low" and the partition movable member 82 is in the second position, air imparted with the second type of fragrance is supplied to the room 12.

[0129] In the third position shown in Figure 9(B), the tip of the extension plate 168 of the intermediate box 134 is close to the lower part of the side wall 113 of the case body 101, located below the air outlet 122. On the other hand, in the third position, the tip of the extension plate 178 of the upper box 135 is close to the upper part of the side wall 113 of the case body 101, located above the air outlet 122. The air outlet 122 is surrounded by the two extension plates 168, 178 and the side wall 163 of the intermediate box 134. Therefore, when the ventilation rate is "normal" and the partition movable member 82 is in the third position, air does not flow out of the case 81. In other words, the third position is a position in which neither the internal space 149 of the lower box 133 nor the internal space 176 of the upper box 135 communicates with the air outlet 122.

[0130] [Operation of residential ventilation system 10] The controller 50 of the residential ventilation system 10 starts normal ventilation with the basic airflow setting based on the user selecting the operation button 64. Specifically, the controller 50 drives the ventilation device 33 and the blower fans 41, 42, 43, and 44 using a first set of control values ​​pre-stored in the memory 52. ​​In normal ventilation, air with the first airflow setting, which is the basic airflow setting, flows through the supply air duct 36. This air flows from the supply air duct 36 into the air intake member 71.

[0131] The air receiving plate 85 of the interlocking member 84 receives the air of the first wind force that flows into the air intake member 71. Upon receiving this air, the interlocking member 84 moves the partition movable member 82 downward against the upward biasing force of the elastic member 83. After passing through the air receiving plate 85, the air flows into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74.

[0132] The movable partition member 82 moves in conjunction with the movement of the interlocking member 84 from the second position shown in Figure 9(A) to the third position shown in Figure 9(B). When the movable partition member 82 is in the third position, the intermediate box 134 is at the same height as the air outlet 122. In the third position, the air outlet 122 is surrounded by the extension plates 168, 178 and the side wall 163. Therefore, air cannot flow inside the case 81. In other words, when the ventilation rate is set to "normal", the fragranced air is not supplied to the room 12.

[0133] The user changes the ventilation volume setting from "normal" to "strong" via the control panel 60. Based on the change in the ventilation volume setting to "strong," the controller 50 drives the ventilation device 33 and the blower fans 41, 42, 43, and 44 using the second set of control values. As a result, air with a second airflow force stronger than the basic setting flows through the supply air duct 36. This air flows from the supply air duct 36 into the air intake member 71.

[0134] The air receiving plate 85 of the interlocking member 84 receives the air of the second wind force that flows into the air intake member 71. Upon receiving this air, the interlocking member 84 moves the partition movable member 82 downward against the upward biasing force of the elastic member 83. After passing through the air receiving plate 85, some of the air flows into the case 81 through the air inlet 121. The remaining air flows into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74.

[0135] The movable partition member 82 moves in conjunction with the movement of the interlocking member 84 from the third position shown in Figure 9(B) to the first position shown in Figure 9(C). When the movable partition member 82 is in the first position, the upper box 135 is at the same height as the air outlet 122. In the first position, air flowing into the case 81 from the air inlet 121 flows into the internal space 176 of the upper box 135 through the ventilation holes 155. The air that flows into the internal space 176 is imparted with a first type of fragrance by the first type of fragrance agent 98. The air containing the first type of fragrance flows out to the outside of the case 81 through the ventilation holes 154 and the air outlet 122. The air that flows out to the outside merges with the other air mentioned above and flows into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74. In other words, when the ventilation volume is set to "strong", air containing the first type of fragrance is supplied to the room 12.

[0136] The user changes the ventilation volume setting from "normal" or "strong" to "weak" via the control panel 60. Based on the change in the ventilation volume setting to "weak," the controller 50 drives the ventilation device 33 and the blower fans 41, 42, 43, and 44 using the third control value group. As a result, air with a third airflow force weaker than the basic setting flows through the supply air duct 36. This air flows from the supply air duct 36 into the air intake member 71.

[0137] When the wind force received by the wind receiving plate 85 of the interlocking member 84 becomes weaker than the first or second wind force, the partition movable member 82 moves upward together with the interlocking member 84 by the elastic member 83. After passing through the wind receiving plate 85, some of the air flows into the case 81 through the air inlet 121. The remaining air flows into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74.

[0138] The movable partition member 82 moves by the elastic member 83 from the first position shown in Figure 9(C) or the third position shown in Figure 9(B) to the second position shown in Figure 9(A). When the movable partition member 82 is in the second position, the lower box 133 is at the same height as the air outlet 122. In the third position, the air that flows into the case 81 from the air inlet 121 flows into the internal space 149 of the lower box 133 through the ventilation hole 153. The air that flows into the internal space 149 is imparted with a second type of fragrance by the second type of fragrance agent 99. The air containing the second type of fragrance flows out to the outside of the case 81 through the ventilation hole 152 and the air outlet 122. The air that flows out to the outside merges with the other air mentioned above and flows into the room 12 through the gap between the ceiling mounting member 72 and the cover member 74. In other words, when the ventilation setting is set to "low," air containing the second type of fragrance is supplied to room 12.

[0139] When the user goes out, they press the operation button 64 to turn off the power. When the power is turned off, the controller 50 stops the operation of the ventilation device 33 and the blower fans 41, 42, 43, and 44. When the operation of the ventilation device 33 and the blower fans 41, 42, 43, and 44 is stopped, the airflow in the supply air duct 36 stops. When the airflow stops, the wind receiving plate 85 of the interlocking member 84 no longer receives wind. As a result, the partition movable member 82 is moved to the second position shown in Figure 9(A) by the biasing force of the elastic member 83. Even when the partition movable member 82 is in the second position, the air supply is stopped, so air containing fragrance is not supplied to the room 12.

[0140] [Effects of the Embodiment] When the user changes the ventilation volume setting from "normal" to "strong" or "weak," the ventilation switches from using fragrance-free air to using fragrance-containing air. Alternatively, when the ventilation volume setting is changed from "strong" or "weak" to "normal," the ventilation switches from using fragrance-containing air to using fragrance-free air. In other words, the residential ventilation system 10 allows switching between generating fragrance or not by changing the settings via the control panel 60.

[0141] When the ventilation volume is set to "high," air containing the first type of fragrance is supplied to room 12, and when the ventilation volume is set to "low," air containing the second type of fragrance is supplied to room 12. In other words, the residential ventilation system 10 can switch the type of fragrance it emits by changing the settings through the control panel 60.

[0142] The fragrance generator 80 moves the movable partition member 82 by the airflow of the air supply duct 36. In other words, the fragrance generator 80 does not require a power source. Therefore, in the residential ventilation system 10, electrical wiring work around the air supply grille 70 is unnecessary. As a result, the construction of the house 11 becomes easier.

[0143] When using a fragrance generator that manually moves the movable partition member 82, the user must use a stool to reach the ceiling 14. In this embodiment, the user can change the presence or absence of fragrance, or the type of fragrance, by operating the control panel 60. Therefore, the residential ventilation system 10 is more user-friendly than when using a fragrance generator that manually moves the movable partition member 82.

[0144] The residential ventilation system 10 supplies air without fragrance at the "normal" ventilation rate, which is the initial setting when the power is turned on. The residential ventilation system 10 supplies air containing fragrance when the user changes the setting from "normal". In other words, the residential ventilation system 10 ventilates with air containing fragrance only when the user intentionally operates the control panel 60.

[0145] When case 81 is pulled down through the through-hole 77 in the cover member 74, it separates from the interlocking member 84. In other words, the user can replenish or replace the air freshener or perform maintenance on case 81 without removing the cover member 74 from the ceiling 14. As a result, the residential ventilation system 10 is more user-friendly.

[0146] The control panel 60 associates the words "No Fragrance" (indicating no fragrance) with the words "Normal" (indicating the ventilation volume setting) to display the text "No Fragrance (Normal)". The control panel 60 also associates the words "First Fragrance" (indicating the first type of fragrance) with the words "Strong" (indicating the ventilation volume setting) to display the text "First Fragrance (Strong)". Furthermore, the control panel 60 associates the words "Second Fragrance" (indicating the second type of fragrance) with the words "Weak" (indicating the ventilation volume setting) to display the text "Second Fragrance (Weak)". Therefore, the residential ventilation system 10 allows the user to easily understand the relationship between the presence or absence of fragrance, the type of fragrance, and the ventilation volume, and to make the necessary settings. As a result, the user experience is improved.

[0147] [Differentiation] Instead of the control panel 60, the control panel 180 shown in Figure 3(D) may be used. The control panel 180 has an operating knob 181 instead of a touch panel 61. The words "No fragrance (normal)", "First fragrance (strong)", and "Second fragrance (weak)" are directly printed on the surface of the control panel 180.

[0148] [Other variations] In the embodiment, an example was described in which the residential ventilation system 10 has three ventilation volume settings: "normal," "weak," and "strong." However, the residential ventilation system 10 may have two ventilation volume settings: "normal" and "weak," or "normal" and "strong," or "weak" and "strong." In that case, the movable partition member 82 may have only the lower box 133 and the intermediate box 134, and not the upper box 135. Alternatively, the movable partition member 82 may have only the lower box 133 and the upper box 135, and not the intermediate box 134. When the movable partition member 82 has only the lower box 133 and the intermediate box 134, the residential ventilation system 10 can switch between ventilation with fragranced air and ventilation with unfragrant air. When the movable partition member 82 has only the lower box 133 and the upper box 135, the residential ventilation system 10 can switch between types of fragrance. Furthermore, if the movable partition member 82 has only a lower box 133 and an upper box 135, the air freshener may be stored in one of the lower box 133 and the upper box 135, while the air freshener is not stored in the other. In this case, the residential ventilation system 10 can switch between ventilation with scented air and ventilation with unscented air.

[0149] In the embodiment, an example was described in which the internal space 166 of the intermediate box 134 is sealed, and the internal spaces 149 and 176 of the lower box 133 and upper box 135 are open. However, either the internal space 149 of the lower box 133 or the internal space 176 of the upper box 135 may be closed, and the internal space 166 of the intermediate box 134 may be open. In that case, when the ventilation rate is set to either "weak" or "strong," unscented air is supplied to the room 12. Also, when the ventilation rate is set to the other of "weak" or "strong," or to "normal," scented air is supplied to the room 12.

[0150] In the embodiment described, there are three ventilation volume settings, and the movable partition member 82 has three boxes: a lower box 133, an intermediate box 134, and an upper box 135. However, if the residential ventilation system 10 allows for four or more ventilation volume settings, the movable partition member 82 may have four or more boxes.

[0151] In the embodiment, an example was described in which the case 81 is fitted into the through hole 77 of the cover member 74. However, the case 81 may also be placed on top of the cover member 74. In that case, the user removes the case 81 together with the cover member 74 from the ceiling 14.

[0152] In the embodiment described, an example was described in which the partition movable member 82 is supported on the case body 101 so as to be movable along the vertical direction. However, the partition movable member 82 may be supported on the case body 101 so as to be movable or rotatable along the horizontal direction. In that case, the partition movable member 82 and the shaft 86 of the interlocking member 84 are connected via a cam mechanism. The cam mechanism transmits the force along the vertical direction of the interlocking member 84 to the partition movable member 82 in the form of a force along the horizontal direction or a rotational force. That is, the partition movable member 82 may be movable in any direction as long as it can be moved by the air supplied by the air supply duct 36. In this case, the cam mechanism is part of the interlocking member 84.

[0153] In the embodiment, an example was described in which the residential ventilation system 10 is equipped with multiple blower fans 35, 41, 42, 43, and 44. However, if a sufficient amount of ventilation can be ensured, all or some of the blower fans 41, 42, 43, and 44 may be omitted. In other words, the residential ventilation system 10 only needs to be equipped with at least one blower fan 35.

[0154] In the embodiment, an example was described in which the operation panel 60 is equipped with an operation button 64. However, a motion sensor that detects residents inside the house 11 may be installed instead of, or together with, the operation button 64. The controller 50 starts ventilating the house 11 using the house ventilation system 10 based on the motion sensor detecting a resident. The controller 50 stops ventilating the house 11 based on the motion sensor no longer detecting a resident.

[0155] In the embodiment, an example was described in which the interlocking member 84 is equipped with a wind-receiving plate 85. That is, an example was described in which the wind-receiving portion of the interlocking member 84 is plate-shaped. However, the wind-receiving portion of the interlocking member 84 may have a shape other than a plate. For example, the interlocking member 84 may be equipped with a wind-receiving portion of another shape, such as a spherical or conical shape, instead of the wind-receiving plate 85.

[0156] In the embodiment, an example was described in which the interlocking member 84 is located inside the air intake member 71. However, the interlocking member 84 may be located inside the air intake duct 36. Alternatively, the interlocking member 84 may be located below the air intake member 71. In other words, the interlocking member 84 only needs to be located in the airflow path supplied to the room 12 by the ventilation device 33. The case 81 may also be located inside the air intake duct 36 or inside the air intake member 71, rather than directly below the air intake member 71.

[0157] [Note 1] A ventilation system installed in a house that has a blowing function to take in outside air and send it out, An air supply duct connects the above-mentioned ventilation device to the air intake vent in the room ceiling, A control panel that accepts user input, A controller capable of controlling the airflow of the air supplied to the room from the air intake in two or more stages based on the input values ​​from the control panel, It is equipped with an aroma generator, The above fragrance generating device is A case having an internal space, having an air inlet and an air outlet connected to the internal space, wherein the air inlet is located in the airflow path supplied by the ventilation device, The above-mentioned internal space is divided into a first chamber and a second chamber capable of storing air fresheners, and a movable partition member is positioned in the internal space so as to be movable between the first and second positions, An elastic member that biases the above-mentioned movable partition member from the first position toward the second position, It has a receiving section that receives the air supplied by the ventilation device described above, and an interlocking member that contacts the movable partition member and moves the movable partition member from the second position to the first position by the airflow of the air, The above-mentioned first position is the position in which the above-mentioned first chamber communicates with the above-mentioned air outlet, The above-mentioned second position is a residential ventilation system in which the above-mentioned second chamber is in communication with the above-mentioned air outlet.

[0158] [Note 2] The above controller can control the airflow at the air intake in three or more stages based on the input values ​​from the above control panel. The above-mentioned movable partition member is movable to the first position, the second position, and the third position. The third position described above is a position that does not communicate with either the first chamber or the second chamber described above to the air outlet. The above-mentioned interlocking member moves the partition movable member from the second position to the first position or the third position in accordance with the wind force of the air received by the wind receiving section, as described in Appendix 1 of the residential ventilation system.

[0159] [Note 3] The above controller can control the airflow at the air intake based on the input values ​​from the above control panel, to a first airflow setting which is the basic setting, a second airflow setting which is stronger than the first airflow setting, and a third airflow setting which is weaker than the first airflow setting. The above interlocking member is, The air from the first wind force described above is received by the wind receiving section, and the movable partition member is moved to the third position described above. The air from the second wind force described above is received by the wind receiving section, and the movable partition member is moved to the first position. The residential ventilation system described in Appendix 2, wherein the air from the third wind force described above is received by the wind receiving section and the movable partition member is moved to the second position described above.

[0160] [Note 4] A cylindrical air intake member that partitions the above-mentioned air intake, A guide member is positioned within the above-mentioned air intake member and supports the above-mentioned interlocking member so that it can move along the vertical direction, The above-mentioned fragrance generating device has a through hole into which it is fitted, and further comprises a cover member positioned below the above-mentioned air intake port, The above-mentioned movable partition member divides the above-mentioned internal space vertically and is supported in the above-mentioned case so as to be movable along the vertical direction. The above elastic member biases the above movable partition member upward with the above case as a pivot point. The above air inlet is open at the top of the above case. The lower end of the interlocking member is inserted into the internal space of the case from the air inlet and contacts the movable partition member from above, as described in Appendix 1, for the residential ventilation system.

[0161] [Note 5] The above control panel displays information regarding fragrance in correspondence with airflow, as described in Appendix 1 of the residential ventilation system.

[0162] [Note 6] A case having an internal space, having an air inlet and an air outlet connected to the internal space, wherein the air inlet is located in the airflow path supplied from the room's air intake, The above-mentioned internal space is divided into a first chamber and a second chamber capable of storing air fresheners, and a movable partition member is positioned in the internal space so as to be movable between the first and second positions, An elastic member that biases the above-mentioned movable partition member from the first position toward the second position, It has a receiving section that receives the air supplied to the above-mentioned air intake, and an interlocking member that contacts the above-mentioned movable partition member and moves the movable partition member from the second position to the first position by the wind force of the air, The above-mentioned first position is the position in which the above-mentioned first chamber communicates with the above-mentioned air outlet, The above-mentioned second position is the position in which the above-mentioned second chamber communicates with the above-mentioned air outlet, in the fragrance generating device. [Explanation of symbols]

[0163] 10. Residential ventilation systems 11. Housing Rooms 12, 13... 14. Ceiling 15...Air supply port 31. Outside air inlet duct 32... Exhaust duct 33. Ventilation system 35... Blower fan 36. Air intake duct 37. Exhaust duct 41, 42, 43, 44... Blower fan 50... Controller 60, 180... Control Panel 61...Touch panel 70... Air intake grille 71...Air intake vent component 74... Cover component 77... Through hole 80. Fragrance Generator 81...cases 82...Movable partition members 83. Elastic component 84... Interlocking components 85...Blow plate 86... Shaft 91, 92... Guide members 94... Ring 98...Type 1 air freshener 99...Second type of air freshener 117...Internal space 118...shielding plate 121...Air Inlet 122...Air outlet 133...lower box 134...Intermediate box 135...upper box 149...Internal space 152, 153, 154, 155... Ventilation holes 176...Internal space 181... Operation knob

Claims

1. A ventilation system installed in a house that has a blowing function to take in outside air and send it out, An air supply duct connects the above-mentioned ventilation device to the air intake vent in the room ceiling, A control panel that accepts user input, A controller capable of controlling the airflow of the air supplied to the room from the air intake in two or more stages based on the input values ​​from the control panel, It is equipped with an aroma generator, The above fragrance generating device is A case having an internal space, having an air inlet and an air outlet connected to the internal space, wherein the air inlet is located in the airflow path supplied by the ventilation device, The above-mentioned internal space is divided into a first chamber and a second chamber capable of storing air fresheners, and a movable partition member is positioned in the internal space so as to be movable between the first and second positions, An elastic member that biases the above-mentioned movable partition member from the first position toward the second position, It has a receiving section that receives the air supplied by the ventilation device described above, and an interlocking member that contacts the movable partition member and moves the movable partition member from the second position to the first position by the airflow of the air, The first position described above is the position in which the first chamber communicates with the air outlet. The above-mentioned second position is a residential ventilation system in which the above-mentioned second chamber is in communication with the above-mentioned air outlet.

2. The above controller can control the airflow at the air intake in three or more stages based on the input values ​​from the above control panel. The above-mentioned movable partition member is movable to the first position, the second position, and the third position. The third position described above is a position in which neither the first chamber nor the second chamber communicates with the air outlet. The residential ventilation system according to claim 1, wherein the interlocking member moves the movable partition member from the second position to the first position or the third position in accordance with the wind force of the air received by the wind receiving section.

3. The above controller can control the airflow at the air intake based on the input values ​​from the above control panel, to a first airflow, which is the basic setting; a second airflow, which is stronger than the first airflow; and a third airflow, which is weaker than the first airflow. The above interlocking member is, The air from the first wind force described above is received by the wind receiving section, and the movable partition member is moved to the third position. The air from the second wind force described above is received by the wind receiving section, and the movable partition member is moved to the first position. The residential ventilation system according to claim 2, wherein the air from the third wind force is received by the wind receiving section and the movable partition member is moved to the second position.

4. A cylindrical air intake member that partitions the above-mentioned air intake, A guide member is positioned within the above-mentioned air intake member and supports the above-mentioned interlocking member so that it can move along the vertical direction, The above-mentioned fragrance generating device has a through hole into which it is fitted, and further comprises a cover member positioned below the above-mentioned air intake port, The above-mentioned movable partition member divides the above-mentioned internal space vertically and is supported in the above-mentioned case so as to be movable along the vertical direction. The above elastic member biases the above movable partition member upward with the above case as a pivot point. The above air inlet is open at the top of the above case. The lower end of the interlocking member is inserted into the internal space of the case from the air inlet and contacts the movable partition member from above, as described in claim 1, for the residential ventilation system.

5. The above-mentioned control panel displays information regarding fragrance in correspondence with wind speed, as described in claim 1.

6. A case having an internal space, having an air inlet and an air outlet connected to the internal space, wherein the air inlet is located in the airflow path supplied from the room's air intake, The above-mentioned internal space is divided into a first chamber and a second chamber capable of storing air fresheners, and a movable partition member is positioned in the internal space so as to be movable between the first and second positions, An elastic member that biases the above-mentioned movable partition member from the first position toward the second position, It has a receiving section that receives the air supplied to the above-mentioned air intake, and an interlocking member that contacts the above-mentioned movable partition member and moves the movable partition member from the second position to the first position by the airflow of the said air, The first position described above is the position in which the first chamber communicates with the air outlet. The second position described above is the position in which the second chamber communicates with the air outlet, in the fragrance generating device.

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