WO2022123656A1 - Shutter device and ventilation device - Google Patents

Shutter device and ventilation device Download PDF

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Publication number
WO2022123656A1
WO2022123656A1 PCT/JP2020/045702 JP2020045702W WO2022123656A1 WO 2022123656 A1 WO2022123656 A1 WO 2022123656A1 JP 2020045702 W JP2020045702 W JP 2020045702W WO 2022123656 A1 WO2022123656 A1 WO 2022123656A1
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WO
WIPO (PCT)
Prior art keywords
air supply
shutter
air
exhaust
air passage
Prior art date
Application number
PCT/JP2020/045702
Other languages
French (fr)
Japanese (ja)
Inventor
茂樹 西村
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2020/045702 priority Critical patent/WO2022123656A1/en
Priority to JP2022567923A priority patent/JP7442681B2/en
Publication of WO2022123656A1 publication Critical patent/WO2022123656A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems

Definitions

  • the present invention relates to a shutter device used for a ventilation device having an air supply air passage and an exhaust air passage, and a ventilation device provided with the shutter device.
  • the ventilation device In a ventilation system equipped with a supply air passage that allows external air to flow into the room, an exhaust air passage that discharges indoor air to the outside, and a fan that promotes the flow of air in these air passages, the ventilation device is supplied when the ventilation device is stopped. If the air passage and the exhaust air passage are left open, the external air may enter the ventilation device due to the wind blown from the outside to the ventilation device or the pressure difference between the inside and outside of the room, causing dew condensation in the ventilation device, or insects. Foreign matter such as may invade.
  • a shutter may be provided to open the air supply air passage and the exhaust air passage when the ventilation system is operating, and to close each air passage when the ventilation system is stopped.
  • a means for opening and closing such a shutter there is a structure that automatically opens and closes according to the operation / stop of the ventilation device using an electric motor or the like, but the structure becomes complicated and the cost increases.
  • the user manually opens and closes the shutter but when the user stops the ventilation system, if the user forgets to close the air passage, the air passage will remain open. ..
  • Patent Document 1 discloses a shutter that is pushed up by the wind pressure due to the rotation of the impeller to open the exhaust air passage when the ventilation fan is operated, and closes the exhaust air passage by its own weight when stopped. ing.
  • the structure is not complicated because no electric motor is used, and when the user operates or stops the ventilation fan, the operation of opening and closing the shutter is not required, so the operation of closing the shutter is forgotten.
  • the open state of the air passage due to the above does not occur.
  • the shutter disclosed in Patent Document 1 opens and closes the exhaust air passage.
  • the direction of the airflow that is desired to flow when the ventilation fan is operating and the direction of the airflow that is desired to be blocked when the ventilation fan is stopped are different. Therefore, by opening the shutter by the wind pressure from one direction as described above and not by the wind pressure from the other direction, the exhaust air passage is opened when the ventilation fan is operating, and the exhaust air passage is shut off when the ventilation fan is stopped. The function of doing can be realized.
  • the direction of the airflow that you want to flow when the ventilation fan is operating and the direction of the airflow that you want to shut off when it is stopped are the same direction. If a shutter that opens with the air pressure in the direction of the air flow you want to flow is installed in the air supply air passage as described above, it will open even with the air pressure of the air flow in the direction you want to shut off, and air or foreign matter will come in from the outside when the ventilation fan is stopped. It cannot be prevented from flowing into the ventilation fan.
  • This disclosure is made in order to solve the above-mentioned problems, and even in an air supply air passage in which the direction of the airflow to be flowed when the ventilation device is operating and the direction of the airflow to be blocked when the ventilation device is stopped are the same, the motor or the electric motor or The purpose is to obtain a shutter that can open the air supply air passage when the ventilation system is operating and shut off the air supply air passage when the ventilation system is stopped, without requiring the operation of the user.
  • the shutter according to the present disclosure is discharged from an air supply air passage for flowing air supplied to the air supply port of the ventilation device from an external air supply port connected to the outside, and an exhaust port of the ventilation device arranged alongside the air supply port.
  • the main body has an exhaust air passage that allows air to flow to the external exhaust port that connects to the outside, and the air supply air passage is rotatably supported by a rotation shaft provided in the main body and is rotated in a direction away from the external air supply port.
  • An air supply shutter that is open and rotates in a direction approaching the external air supply port to shut off the air supply air passage, and a rotation axis that is rotatably supported by the air supply shutter and rotates in a direction away from the external exhaust port.
  • It is equipped with an exhaust shutter that shuts off the exhaust air passage in the state of being closed and opens the exhaust air passage in a state of rotating in the direction approaching the external exhaust port, and the air supply shutter is provided with the air supply air from the external air supply port toward the air supply port.
  • the moment generated by the exhaust shutter receiving the wind pressure of the air flowing through the exhaust air passage from the external exhaust port toward the exhaust port is larger than the moment generated by receiving the wind pressure of the air flowing through the path.
  • the shutter device includes an air supply shutter and an exhaust shutter rotatably supported by a rotating shaft provided in the main body, and the air supply shutter is an air supply air passage from an external air supply port toward the air supply port.
  • the moment generated by receiving the wind pressure of the air flowing through the exhaust air passage from the external exhaust port toward the exhaust port is larger than the moment generated by receiving the wind pressure of the air flowing through the exhaust shutter.
  • FIG. 1 is a cross-sectional view showing the configuration of the ventilation device 1 and the shutter device 2 according to the first embodiment.
  • the ventilation device 1 and the shutter device 2 are installed on the ceiling of the room, and the indoor air supply port 3 and the return air port 4 located on the upper side in the figure are connected to the duct leading to the room and are located on the lower side in the figure.
  • the outside air port 5 and the ventilation / exhaust port 6 are connected to a duct leading to the outside of the room.
  • the ventilation device 1 is a room in which the air taken in from the outside air port 5 is supplied to the room through the outside air port 5 that takes in the air from the outside into the ventilation device 1 and the outside air port 5 and the ventilation air supply air passage 7.
  • the air supply port 3, the return air port 4 that takes in the return air from the room, and the indoor air taken in from the return air port 4 through the return air port 4 and the ventilation exhaust air passage 8 are taken out of the ventilation device 1. It has a ventilation exhaust port 6 for exhausting air to the air.
  • the outside air port 5 and the ventilation / exhaust port 6 are arranged side by side.
  • the ventilation air supply air passage 7 is provided with an air supply fan 9 for generating an air flow from the outside air port 5 toward the indoor air supply port 3, and the ventilation exhaust air passage 8 is provided with a ventilation exhaust port 6 from the return air port 4.
  • An exhaust fan 10 is provided to generate an air flow toward the airflow.
  • This ventilation device 1 is a ventilation device with a heat exchange function.
  • a shutter device 2 is integrally attached to this ventilation device 1.
  • the main body 12 of the shutter device 2 has an external air supply port 13 that connects to the outside and takes in air from the outside, and an air supply air passage 14 that guides the air taken in from the outside air supply port 13 to the outside air port 5 of the ventilation device 1.
  • the main body 12 has an exhaust air passage 15 for guiding the air discharged from the ventilation exhaust port 6 arranged alongside the outside air port 5, and an external exhaust for discharging the air guided to the exhaust air passage 15 to the outside. It has a mouth 16.
  • a flat plate-shaped air supply shutter 17 rotatably supported by a rotating shaft 18 provided in the main body 12, and the air supply shutter 17 rotates in a direction approaching the external air supply port 13.
  • a blocking plate 19 is provided which abuts the air supply shutter 17 and shuts off the air supply air passage 14 together with the air supply shutter 17. That is, as described above, the air supply shutter 17 rotates in a direction approaching the external air supply port 13 to shut off the air supply air passage 14 in a state of being in contact with the blocking plate 19, and is in a direction away from the external air supply port 13.
  • the air supply air passage 14 is opened in a state where the air supply air passage 14 is separated from the shutoff plate 19 and has a gap.
  • a flat plate-shaped exhaust shutter 20 rotatably supported by a rotating shaft 18 on which the air supply shutter 17 is supported is provided. Since the air supply shutter 17 and the exhaust shutter 20 are integrally formed and rotatably supported by the same rotation shaft 18, when they rotate, they rotate in the same direction in conjunction with each other. Further, since the air supply shutter 17 and the exhaust shutter 20 are formed so as to sandwich the rotation shaft 18, the moving directions during rotation are opposite to each other. For example, when rotating clockwise in FIG. 1, the air supply shutter is used. 17 moves upward and the exhaust shutter 20 moves downward.
  • an exhaust shutter stopper that regulates the rotation of the exhaust shutter 20 so that the exhaust shutter 20 abuts in the exhaust air passage 15 in a state of being rotated in a direction approaching the external exhaust port 16 so that the exhaust shutter 20 does not rotate any more.
  • a stopper 21 is provided. That is, the exhaust shutter 20 rotates in a direction approaching the external exhaust port 16 and comes into contact with the stopper 21, and the exhaust air passage is opened while a gap is maintained in the middle of the exhaust air passage 15, and the external exhaust port 16 is opened. In the state of rotating in the direction away from the air, the ventilation exhaust port 6 is closed to shut off the exhaust air passage 15.
  • the exhaust shutter 20 ventilates a moment larger than the moment generated by the air supply shutter 17 receiving the wind pressure of the air flowing through the air supply air passage 14 from the external air supply port 13 toward the outside air port 5 from the external exhaust port 16. It is configured to be generated by receiving the wind pressure of the air flowing through the exhaust air passage 15 toward the exhaust port 6.
  • the area of the flat plate-shaped exhaust shutter 20 in the exhaust air passage 15 is configured to be larger than the area of the flat plate-shaped air supply shutter 17 in the air supply air passage 14.
  • FIG. 1 shows a state in which the ventilation device 1 is operating, the air supply fan 9 and the exhaust fan 10 are rotated, and airflows as shown by arrows are generated in the ventilation air supply air passage 7 and the ventilation exhaust air passage 8, respectively. Shows.
  • the air supply fan 9 rotates, a negative pressure is generated on the outside air port 5 side of the ventilation device 1, and this negative pressure causes the external air supply port 13 to be directed toward the outside air port 5 in the air supply air passage 14 of the shutter device 2. Airflow is generated.
  • the air supply shutter 17 rotates in a direction away from the external air supply port 13, and is separated from the cutoff plate 19 which is a supply air passage blocking member to form a gap.
  • the exhaust shutter 20 rotates in a direction approaching the external exhaust port 16 to open the exhaust air passage in a state where a gap is maintained in the middle of the exhaust air passage 15.
  • this shutter device 2 utilizes the wind pressure generated by the ventilation device 1 when the ventilation device 1 is operated, and both the air supply shutter 17 and the exhaust shutter 20 have the supply air passage 14 and the exhaust air passage. 15 is opened to operate so as not to interfere with the supply of outside air and the exhaust of indoor air.
  • FIG. 2 is a cross-sectional view of the shutter device 2 when the ventilation device 1 is stopped.
  • the external air supply port 14 in the air supply air passage 14 of the shutter device 2 An air flow from 13 to the outside air port 5 and an air flow from the external exhaust port 16 to the ventilation exhaust port 6 are generated in the exhaust air passage 15.
  • the air supply shutter 17 is subjected to a force for rotating the air supply shutter 17 in the direction away from the external air supply port 13, that is, in the counterclockwise direction in FIG. 1, while the exhaust shutter 20 is in the direction away from the external exhaust port 16. That is, in FIG. 1, a force that rotates in the clockwise direction acts. That is, a force is applied to the air supply shutter 17 and the exhaust shutter 20 to rotate them in different directions.
  • the area of the exhaust shutter 20 is larger than the area of the air supply shutter 17, when an air flow having the same wind velocity flows through the air supply air passage 14 and the exhaust air passage 15, the air supply shutter 17 passes through the air supply air passage 14.
  • the air supply shutter 17 rotates in a direction approaching the external air supply port 13 and comes into contact with the blocking plate 19 to block the air supply air passage 14, and the exhaust shutter 20 is the external exhaust port. It rotates in a direction away from 16 and shuts off the exhaust air passage 15 in a state of blocking the ventilation exhaust port 6.
  • the shutter device 2 is supplied by using the wind pressure of the air flow that is going to flow in. Both the air shutter 17 and the exhaust shutter 20 shut off the air supply air passage 14 and the exhaust air passage 15 so that the outside air does not enter the inside of the ventilation device 1.
  • the exhaust shutter 20 is exhausted by receiving the wind pressure of the air flowing in the exhaust air passage 15 rather than the moment generated in the air supply shutter 17 by the air supply shutter 17 receiving the wind pressure of the air flowing in the air supply air passage 14.
  • the moment generated in the shutter 20 is larger.
  • Embodiment 2 In the first embodiment, an air supply shutter 17 made of one flat plate is provided in the air supply air passage 14 of the shutter device 2, and an exhaust shutter 20 made of one flat plate is provided in the exhaust air passage 15.
  • each shutter needs an area sufficient to receive a wind pressure sufficient to generate a rotational force, but on the other hand, the larger the area, the more the airflow when opening the supply air passage 14 and the exhaust air passage 15. It gets in the way.
  • the air supply shutter 17 and the exhaust shutter 20 can receive sufficient wind pressure to generate the same rotational force as in the first embodiment, and the air supply air passage 14 and the exhaust air passage 15 are opened. A configuration in which the air flow is smoothly flowed to reduce the pressure loss will be described.
  • FIGS. 3 and 4 are cross-sectional views of the shutter device 2 according to the second embodiment, FIG. 3 shows the time when the ventilation device 1 is operated, and FIG. 4 shows the time when the ventilation device 1 is stopped.
  • the shutter device 2 is provided with an auxiliary air supply shutter 22 in the air supply air passage 14 and an auxiliary exhaust shutter 23 in the exhaust air passage 15, and the other parts are the embodiment. It is the same as the ventilation device 1 and the shutter device 2 of 1.
  • the shutoff plate 19, which is a supply air passage cutoff member, is provided with an air supply window 24 and a rotary shaft 25, and an auxiliary air supply shutter 22 is rotatably provided on the rotary shaft 25.
  • a first protrusion 26 extending toward the outside air port 5 is provided at the tip of the air supply shutter 17 on the side opposite to the rotation shaft 18.
  • an L-shaped second protrusion 27 extending toward the air supply shutter 17 is provided at a portion of the auxiliary air supply shutter 22 supported by the rotation shaft 25.
  • the second protrusion 27 is first when the auxiliary air supply shutter 22 is at a position where the air supply window 24 is blocked and the air supply shutter 17 is at a position where the air supply shutter 17 is in contact with the blocking plate 19. It is configured to be in contact with the protrusion 26, and in this state, the second protrusion 27 is restricted from rotating toward the first protrusion 26. Therefore, in the state of FIG. 4, the auxiliary air supply shutter 22 is also restricted from rotating.
  • the auxiliary air supply shutter 22 is provided with a spring (not shown) as a window blocking elastic body that applies a force for rotating the auxiliary air supply shutter 22 in a direction approaching the external air supply port 13.
  • the rotational force applied by this spring is such that the auxiliary air supply shutter 22 is rotated in a direction approaching the external air supply port 13 in a windless state, and the air flow generated by the air supply fan 9 causes the auxiliary air supply shutter 22 to rotate.
  • the rotational force is adjusted to be weaker than the generated force.
  • the exhaust shutter 20 is provided with an exhaust window 28 and a rotary shaft 29, and the rotary shaft 29 shuts off the exhaust air passage 15 in a state of being rotated in a direction away from the external exhaust port 16 to the external exhaust port 16.
  • An auxiliary exhaust shutter 23 that opens the exhaust air passage 15 in a state of being rotated in the approaching direction is rotatably provided.
  • FIG. 3 shows a state in which the ventilation device 1 is operating, the air supply fan 9 and the exhaust fan 10 are rotated, and airflows as shown by arrows are generated in the ventilation air supply air passage 7 and the ventilation exhaust air passage 8, respectively. Shows.
  • the air pressure generated by the rotation of the air supply fan 9 causes the air supply shutter 17 to move away from the external air supply port 13 and the exhaust shutter 20 to approach the external exhaust port 16.
  • a force for rotating each of them acts in each direction, and both shutters rotate in the counterclockwise direction in FIG.
  • the air supply shutter 17 opens the air supply air passage 14, and the exhaust shutter 20 opens the exhaust air passage 15.
  • the air supply shutter 17 starts to rotate and separates from the blocking plate 19, the first protrusion 26 separates from the second protrusion 27, so that the rotation of the auxiliary air supply shutter 22 is not restricted, and the external air supply port is not restricted.
  • the auxiliary air supply shutter 22 also rotates in a direction away from the external air supply port 13 due to the airflow from the 13 to the outside air port 5, and opens the air supply window 24.
  • the auxiliary exhaust shutter 23 is not regulated to rotate toward the external exhaust port 16
  • the airflow from the ventilation exhaust port 6 toward the external exhaust port 16 causes the auxiliary exhaust shutter 23 to rotate in a direction approaching the external exhaust port 16.
  • the exhaust window 28 is opened.
  • the auxiliary air supply shutter 22 opens the supply air window 24 and the auxiliary exhaust shutter 23 opens the exhaust window 28, the area through which the airflow passes in the supply air passage 14 and the exhaust air passage 15 expands, resulting in pressure loss. Is reduced.
  • FIG. 4 is a cross-sectional view of the shutter device 2 when the ventilation device 1 is stopped.
  • the auxiliary air supply shutter 22 is rotated in the direction approaching the external air supply port 13 by the spring provided in the auxiliary air supply shutter 22 to shield the air supply window 24.
  • the auxiliary exhaust shutter 23 flows in the exhaust air passage 15. It rotates toward the exhaust window 28 under the wind pressure of the air, and the exhaust window 28 is shut off by the auxiliary exhaust shutter 23.
  • the area of the surface formed by the air supply shutter 17 and the auxiliary air supply shutter 22 is the same as the area of the air supply shutter 17 of the first embodiment, and the surface formed by the exhaust shutter 20 and the auxiliary exhaust shutter 23.
  • the area of is the same as the area of the exhaust shutter 20 of the first embodiment. Therefore, as in the first embodiment, both the air supply shutter 17 and the exhaust shutter 20 rotate in the clockwise direction in FIG. When the air supply shutter 17 comes into contact with the blocking plate 19, the rotation is restricted, and the air supply shutter 17 and the exhaust shutter 20 stop rotating in the state shown in FIG.
  • the auxiliary air supply shutter 22 When the auxiliary air supply shutter 22 receives the wind pressure of the air flowing in the air supply air passage 14 in the state as shown in FIG. 4, the auxiliary air supply shutter 22 receives a force for rotating the auxiliary air supply shutter 22 in the counterclockwise direction in FIG. work. However, since the first protrusion 26 of the air supply shutter 17 and the second protrusion 27 of the auxiliary air supply shutter 22 are in contact with each other to regulate the rotation of the auxiliary air supply shutter 22, the auxiliary air supply shutter 22 is supplied. The state in which the air window 24 is shielded is maintained.
  • the shutter device 2 is affected by the wind pressure of the air flow that is about to flow in and the force of the spring.
  • Each air passage is shut off so that outside air and the like do not enter the inside of the ventilation device 1. That is, the auxiliary air supply shutter 22 and the auxiliary exhaust shutter 23 shield the air supply window 24 and the exhaust window 28, and the air supply shutter 17 and the exhaust shutter 20 block the air supply air passage 14 and the exhaust air passage 15, respectively. It operates so that outside air or the like does not enter the inside of the ventilation device 1. Further, by providing the air supply window 24 and the exhaust window 28, the area through which the airflow passes in each air passage is widened, so that the pressure loss is reduced and air supply and exhaust can be performed more effectively.
  • the auxiliary air supply shutter 22 and the auxiliary exhaust shutter 23 are provided, but the auxiliary air supply shutter 22 is provided in the air supply air passage 14 and the auxiliary exhaust air is provided in the exhaust air passage 15.
  • the configuration may be such that the shutter 23 is not provided, or the auxiliary exhaust shutter 23 is provided in the exhaust air passage 15 without providing the auxiliary air supply shutter 22 in the air supply air passage 14.
  • the shutter device 2 is integrally attached to the ventilation device 1
  • the shutter device 2 of the present disclosure is not integrally attached to the ventilation device 1 and is ventilated. Even if it is configured separately from the device and attached to an existing ventilation device, the same effect as that of the above embodiment can be obtained.
  • the ventilation device equipped with the heat exchanger has been described, but the shutter device of the present disclosure is equipped with the heat exchanger if it is a ventilation device provided with an air supply air passage and an exhaust air passage. It can be applied even if the ventilation system is not installed.
  • separate air supply type ventilation devices and exhaust type ventilation devices that are operated in conjunction with each other may be connected to the supply air passage 14 and the exhaust air passage 15 of the shutter device 2 by a duct or the like.
  • the moment generated in the exhaust shutter 20 is superior to the moment generated in the air supply shutter 17.
  • the area is configured to be larger than the area of the air supply shutter 17, but the configuration in which the relationship between the moments generated by each shutter is as described above is not limited to this.
  • the distance from the tip of the exhaust shutter 20 opposite to the rotating shaft 18 to the rotating shaft 18 is longer than the distance from the tip of the air supply shutter 17 opposite to the rotating shaft 18. By setting, it may be configured to establish the above-mentioned moment relationship.
  • the above-mentioned moment relationship can be established by appropriately setting the positions or shapes of the external air supply port 13 and the external exhaust port 16 as well as the shapes of the air supply shutter 17 and the exhaust shutter 20.
  • the area of the air supply shutter 17 and the area of the exhaust shutter 20 are set to be about the same, and the position of the external air supply port 13 is configured to be closer to the rotating shaft 18 than to the external exhaust port 16.
  • the distance from the place where the airflow directly hits the air supply shutter 17 to the rotating shaft 18 becomes closer than the distance from the place where the airflow directly hits the exhaust shutter 20 to the rotating shaft 18, and the above-mentioned moment relationship is established.
  • the area of the air supply shutter 17 and the area of the exhaust shutter 20 are set to be about the same, and the distance between the external air supply port 13 and the external exhaust port 16 from the rotating shaft 18 is set to be about the same.
  • the opening area of the air supply port 13 is smaller than the opening area of the external exhaust port 16.
  • the exhaust shutter is more than the moment generated in the air supply shutter 17.
  • the shutter device 2 is configured so that the moment generated in 20 becomes large.
  • FIG. 8A is a cross-sectional view of the case where a spring 30 for pushing the air supply shutter 17 downward is provided near the rotation shaft 18 of the main body 12 of the shutter device 2 according to the first embodiment, and is a cross-sectional view taken along the line 8 (b). ) Is a cross-sectional view in the case where a spring 30 is provided as an air passage blocking elastic body that pushes the exhaust shutter 20 upward near the rotation shaft 18 of the main body 12 of the shutter device 2 in the first embodiment.
  • FIG. 9 is a cross-sectional view of the main body 12 of the shutter device 2 according to the first embodiment, in which a rubber 31 is provided as an air passage blocking elastic body that pulls the exhaust shutter 20 upward.
  • the elastic force of the spring 30 or the rubber 31 generates a rotational force that rotates the air supply shutter 17 and the exhaust shutter 20 in a windless state, and is generated by the airflow generated by the air supply fan 9 and the exhaust fan 10 when the ventilation device 1 is operating. Adjust to the extent that a rotational force weaker than the rotational force generated by each shutter is generated.
  • the spring 30 or the rubber 31 is provided as the air passage blocking elastic body is shown, an elastic body other than the spring 30 and the rubber 31 may be used. Further, the place and structure for mounting may be other as long as it generates the same rotational force as the spring 30 or the rubber 31 described above.
  • the spring 30 or the rubber 31 as the air passage blocking elastic body makes the air supply shutter 17 the external air supply port 13. It is preferable that the force of the spring as the window blocking elastic body rotating the auxiliary air supply shutter 22 in the direction of approaching the external air supply port 13 is stronger than the force of rotating the auxiliary air supply shutter 22 in the approaching direction.
  • the air supply shutter 17 comes down and closes, and the first protrusion 26 and the second protrusion It smoothly shifts to a state in which the auxiliary air supply shutter 22 comes into contact with the portion 27 to restrict the rotation of the auxiliary air supply shutter 22.
  • the air supply fan 9 rotates and an air flow flowing into the air supply air passage 14 is generated while the air supply shutter 17 and the auxiliary air supply shutter 22 are closed, the air supply is performed before the auxiliary air supply shutter 22.
  • the shutter 17 opens, and the engagement between the first protrusion 26 of the air supply shutter 17 and the second protrusion 27 of the auxiliary air supply shutter 22 is released.
  • the auxiliary air supply shutter 22 can be rotated, and the rotation of the auxiliary air supply shutter 22 is smoothly started.
  • Ventilation device 1 Ventilation device, 2 Shutter device, 3 Indoor air supply port, 4 Return air port, 5 Outside air port, 6 Ventilation exhaust port, 7 Ventilation air supply air passage, 8 Ventilation exhaust air passage, 9 Air supply fan, 10 Exhaust fan, 11 Heat exchanger, 12 main body, 13 external air supply port, 14 air supply air passage, 15 exhaust air passage, 16 external exhaust port, 17 air supply shutter, 18 rotating shaft, 19 blocking plate, 20 exhaust shutter, 21 stopper, 22 Auxiliary air supply shutter, 23 auxiliary exhaust shutter, 24 air supply window, 25 rotating shaft, 26 first protrusion, 27 second protrusion, 28 exhaust window, 29 rotating shaft, 30 spring, 31 rubber

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)

Abstract

Providing a shutter that has a simple configuration for opening using the wind pressure of an airflow and closing under the weight of the shutter itself to an air exhaust wind path in a ventilation device prevents foreign matter from intruding into the ventilation device when the same is stopped; however, even if the same shutter is provided to an air supply wind path, the shutter opens due to the wind pressure of an airflow to be blocked when the ventilation device is stopped, and intrusion of foreign matter from the exterior is not prevented.　This shutter device comprises an air supply wind path and an air exhaust wind path, and also comprises an air supply shutter that is provided to a body section and that is rotatably supported by a rotating shaft, and an air exhaust shutter that rotates in conjunction with the air supply shutter, the shutter device being configured such that the moment produced upon the air exhaust shutter receiving the wind pressure of air flowing through the air exhaust wind path is greater than the moment produced upon the air supply shutter receiving the wind pressure of air flowing through the air supply wind path. This makes it possible to prevent intrusion of foreign matter when a ventilation device is stopped, even when there is an airflow flowing into the ventilation device when the same is stopped, because the moment produced in the air exhaust shutter is predominant and the air supply shutter and the air exhaust shutter rotate in a direction such that the wind paths are blocked.

Description

シャッター装置及び換気装置Shutter device and ventilation device
　本発明は、給気風路および排気風路を有する換気装置に用いるシャッター装置及び当該シャッター装置を備えた換気装置に関する。 The present invention relates to a shutter device used for a ventilation device having an air supply air passage and an exhaust air passage, and a ventilation device provided with the shutter device.
　外部の空気を室内に流入させる給気風路と、室内の空気を外部に排出させる排気風路と、これら風路内の空気の流れを促すファンを備えた換気装置では、換気装置の停止時に給気風路および排気風路が開放されたままであると、外部から換気装置に吹き付ける風や室内外の気圧差等により外部空気が換気装置内に入り込んで換気装置内に結露を引き起こしてしまう、あるいは虫などの異物が侵入してしまうことがある。 In a ventilation system equipped with a supply air passage that allows external air to flow into the room, an exhaust air passage that discharges indoor air to the outside, and a fan that promotes the flow of air in these air passages, the ventilation device is supplied when the ventilation device is stopped. If the air passage and the exhaust air passage are left open, the external air may enter the ventilation device due to the wind blown from the outside to the ventilation device or the pressure difference between the inside and outside of the room, causing dew condensation in the ventilation device, or insects. Foreign matter such as may invade.
　これらを防止するために、換気装置の稼働時には給気風路および排気風路を開き、停止時には各風路を閉じるシャッターを設けることがある。このようなシャッターの開閉を行う手段として、電動機等を用いて換気装置の稼働／停止に応じて自動で開閉する構造のものあるが、構造が複雑になり、コストも高くなる。また、使用者が手動でシャッターを開閉する構造のものがあるが、使用者が換気装置を停止したとき、風路を閉じる操作を失念してしまうと風路が開放されたままになってしまう。 In order to prevent these, a shutter may be provided to open the air supply air passage and the exhaust air passage when the ventilation system is operating, and to close each air passage when the ventilation system is stopped. As a means for opening and closing such a shutter, there is a structure that automatically opens and closes according to the operation / stop of the ventilation device using an electric motor or the like, but the structure becomes complicated and the cost increases. In addition, there is a structure in which the user manually opens and closes the shutter, but when the user stops the ventilation system, if the user forgets to close the air passage, the air passage will remain open. ..
　これらの課題を解消するものとして、例えば、特許文献１には、換気扇の運転時に羽根車の回転による風圧により押し上げられて排気風路を開き、停止時に自重により排気風路を閉じるシャッターが開示されている。このシャッターによれば、電動機を用いることがないので構造を複雑にせず、また使用者が換気扇の稼働あるいは停止の操作をした際、シャッターを開閉する操作を要しないので、シャッターを閉じる操作の失念に起因する風路開放状態は生じない。 As a solution to these problems, for example, Patent Document 1 discloses a shutter that is pushed up by the wind pressure due to the rotation of the impeller to open the exhaust air passage when the ventilation fan is operated, and closes the exhaust air passage by its own weight when stopped. ing. According to this shutter, the structure is not complicated because no electric motor is used, and when the user operates or stops the ventilation fan, the operation of opening and closing the shutter is not required, so the operation of closing the shutter is forgotten. The open state of the air passage due to the above does not occur.
特開２０１２－９７９８２号公報Japanese Unexamined Patent Publication No. 2012-97982
　この特許文献１に開示されたシャッターは、排気風路を開閉するものである。排気風路においては、換気扇の稼働時に流したい気流の方向と、停止時に遮断したい気流の方向が異なる。そのため、シャッターを上記のように一方向からの風圧により開き、他方向からの風圧では開かない構成とすることで、換気扇の稼働時に排気風路を開放し、換気扇の停止時に排気風路を遮断するという機能を実現できる。 The shutter disclosed in Patent Document 1 opens and closes the exhaust air passage. In the exhaust air passage, the direction of the airflow that is desired to flow when the ventilation fan is operating and the direction of the airflow that is desired to be blocked when the ventilation fan is stopped are different. Therefore, by opening the shutter by the wind pressure from one direction as described above and not by the wind pressure from the other direction, the exhaust air passage is opened when the ventilation fan is operating, and the exhaust air passage is shut off when the ventilation fan is stopped. The function of doing can be realized.
　一方、給気風路は、換気扇の稼働時において流したい気流の方向と停止時に遮断したい気流の方向が同方向である。給気風路において、上記のように流したい気流の方向の気流の風圧で開くシャッターを設置すると、遮断したい方向の気流の風圧でも開いてしまうことになり、換気扇の停止時に外部から空気あるいは異物が換気扇内に流入することを防止することができない。 On the other hand, in the air supply air passage, the direction of the airflow that you want to flow when the ventilation fan is operating and the direction of the airflow that you want to shut off when it is stopped are the same direction. If a shutter that opens with the air pressure in the direction of the air flow you want to flow is installed in the air supply air passage as described above, it will open even with the air pressure of the air flow in the direction you want to shut off, and air or foreign matter will come in from the outside when the ventilation fan is stopped. It cannot be prevented from flowing into the ventilation fan.
　本開示は、上記した問題点を解決するためになされたものであり、換気装置の稼働時に流したい気流の方向と停止時に遮断したい気流の方向が同方向となる給気風路においても、電動機あるいは使用者の操作を必要とせずに、換気装置の稼働時に給気風路を開放し、換気装置の停止時に給気風路を遮断できるシャッターを得ることを目的とするものである。 This disclosure is made in order to solve the above-mentioned problems, and even in an air supply air passage in which the direction of the airflow to be flowed when the ventilation device is operating and the direction of the airflow to be blocked when the ventilation device is stopped are the same, the motor or the electric motor or The purpose is to obtain a shutter that can open the air supply air passage when the ventilation system is operating and shut off the air supply air passage when the ventilation system is stopped, without requiring the operation of the user.
　本開示に係るシャッターは、室外につながる外部給気口から換気装置の給気口に供給される空気を流す給気風路、給気口と並んで配置された換気装置の排気口から排出される空気を室外につながる外部排気口に流す排気風路を有する本体部と、本体部に設けられた回転軸に回転可能に支持され、外部給気口から離れる方向に回転した状態で給気風路を開放し、外部給気口に近づく方向に回転した状態で給気風路を遮断する給気シャッターと、給気シャッターが支持される回転軸に回転可能に支持され、外部排気口から離れる方向に回転した状態で排気風路を遮断し、外部排気口に近づく方向に回転した状態で排気風路を開放する排気シャッターとを備え、給気シャッターが外部給気口から給気口に向かって給気風路を流れる空気の風圧を受けて生じるモーメントよりも、排気シャッターが外部排気口から排気口に向かって排気風路を流れる空気の風圧を受けて生じるモーメントが大きくなる構成としたものである。 The shutter according to the present disclosure is discharged from an air supply air passage for flowing air supplied to the air supply port of the ventilation device from an external air supply port connected to the outside, and an exhaust port of the ventilation device arranged alongside the air supply port. The main body has an exhaust air passage that allows air to flow to the external exhaust port that connects to the outside, and the air supply air passage is rotatably supported by a rotation shaft provided in the main body and is rotated in a direction away from the external air supply port. An air supply shutter that is open and rotates in a direction approaching the external air supply port to shut off the air supply air passage, and a rotation axis that is rotatably supported by the air supply shutter and rotates in a direction away from the external exhaust port. It is equipped with an exhaust shutter that shuts off the exhaust air passage in the state of being closed and opens the exhaust air passage in a state of rotating in the direction approaching the external exhaust port, and the air supply shutter is provided with the air supply air from the external air supply port toward the air supply port. The moment generated by the exhaust shutter receiving the wind pressure of the air flowing through the exhaust air passage from the external exhaust port toward the exhaust port is larger than the moment generated by receiving the wind pressure of the air flowing through the path.
　本開示に係るシャッター装置は、本体部に設けられた回転軸に回転可能に支持された給気シャッターと排気シャッターを備え、給気シャッターが外部給気口から給気口に向かって給気風路を流れる空気の風圧を受けて生じるモーメントよりも、排気シャッターが外部排気口から排気口に向かって排気風路を流れる空気の風圧を受けて生じるモーメントが大きくなる構成とした。これにより、換気装置の停止時に外部給気口および外部排気口から流入する空気流があったときには、給気シャッターよりも排気シャッターにおいて生じるモーメントが優位となり、排気シャッターに生じるモーメントにより給気シャッター、排気シャッターとも各風路を遮断する方向に回転する。上記構成を備えることにより、換気装置の停止時に外部給気口および外部排気口を介して換気装置に流入しようとする気流があっても、排気風路、給気風路が遮断され、外部の空気あるいは異物が換気装置内に流入することを防ぐことができるという効果を奏する。 The shutter device according to the present disclosure includes an air supply shutter and an exhaust shutter rotatably supported by a rotating shaft provided in the main body, and the air supply shutter is an air supply air passage from an external air supply port toward the air supply port. The moment generated by receiving the wind pressure of the air flowing through the exhaust air passage from the external exhaust port toward the exhaust port is larger than the moment generated by receiving the wind pressure of the air flowing through the exhaust shutter. As a result, when there is an air flow flowing in from the external air supply port and the external exhaust port when the ventilation system is stopped, the moment generated in the exhaust shutter becomes superior to the air supply shutter, and the moment generated in the exhaust shutter causes the air supply shutter, Both the exhaust shutters rotate in the direction of blocking each air passage. By providing the above configuration, even if there is an air flow that tries to flow into the ventilation device through the external air supply port and the external exhaust port when the ventilation device is stopped, the exhaust air passage and the supply air air passage are blocked, and the outside air is provided. Alternatively, it has the effect of preventing foreign matter from flowing into the ventilation device.
実施の形態１における換気装置およびシャッター装置の構成を示す横断面図A cross-sectional view showing the configuration of the ventilation device and the shutter device according to the first embodiment. 実施の形態１におけるシャッター装置の構成を示す横断面図Cross-sectional view showing the configuration of the shutter device according to the first embodiment. 実施の形態２におけるシャッター装置の構成を示す横断面図Cross-sectional view showing the configuration of the shutter device according to the second embodiment. 実施の形態２におけるシャッター装置の構成を示す横断面図Cross-sectional view showing the configuration of the shutter device according to the second embodiment. 実施の形態１における外部給気口の位置を回転軸に近づけたシャッター装置の構成を示す横断面図Cross-sectional view showing the configuration of the shutter device in which the position of the external air supply port is close to the rotation axis in the first embodiment. 実施の形態１における外部給気口の位置を回転軸に近づけたシャッター装置の構成を示す横断面図Cross-sectional view showing the configuration of the shutter device in which the position of the external air supply port is close to the rotation axis in the first embodiment. 実施の形態１における外部給気口の開口面積を外部排気口の開口面積より小さくしたシャッター装置の構成を示す横断面図A cross-sectional view showing a configuration of a shutter device in which the opening area of the external air supply port is smaller than the opening area of the external exhaust port in the first embodiment. 実施の形態１における給気シャッターまたは排気シャッターにばねを設けたシャッター装置の構成を示す横断面図A cross-sectional view showing the configuration of a shutter device in which a spring is provided for an air supply shutter or an exhaust shutter according to the first embodiment. 実施の形態１における排気シャッターにゴムを設けたシャッター装置の構成を示す横断面図A cross-sectional view showing the configuration of a shutter device in which rubber is provided on the exhaust shutter according to the first embodiment.
実施の形態１.
　図１は、実施の形態１における換気装置１およびシャッター装置２の構成を示す横断面図である。換気装置１およびシャッター装置２は室内の天井に設置されており、図中の上側に位置する室内給気口３と還気口４は室内に通じるダクトに接続され、図中の下側に位置する外気口５と換気排気口６は室外に通じるダクトに接続される。
　換気装置１は、外部からの空気を換気装置１内に取り入れる外気口５と、この外気口５と換気給気風路７を介して通じ、外気口５から取り入れた空気を室内に給気する室内給気口３と、室内からの還気を取り込む還気口４と、この還気口４と換気排気風路８を介して通じ、還気口４から取り込んだ室内空気を換気装置１の外に排気する換気排気口６とを有している。外気口５と換気排気口６は並んで配置されている。
　換気給気風路７には、外気口５から室内給気口３の方へ向かう気流を発生させる給気ファン９が設けられ、換気排気風路８には、還気口４から換気排気口６の方へ向かう気流を発生させる排気ファン１０が設けられている。
　また、換気給気風路７と換気排気風路８それぞれの途中に、換気給気風路７と換気排気風路８を流れる空気同士を混合することなく相互に熱交換を行う熱交換器１１が設けられており、この換気装置１は熱交換機能付きの換気装置となっている。 Embodiment 1.
FIG. 1 is a cross-sectional view showing the configuration of the ventilation device 1 and the shutter device 2 according to the first embodiment. The ventilation device 1 and the shutter device 2 are installed on the ceiling of the room, and the indoor air supply port 3 and the return air port 4 located on the upper side in the figure are connected to the duct leading to the room and are located on the lower side in the figure. The outside air port 5 and the ventilation / exhaust port 6 are connected to a duct leading to the outside of the room.
The ventilation device 1 is a room in which the air taken in from the outside air port 5 is supplied to the room through the outside air port 5 that takes in the air from the outside into the ventilation device 1 and the outside air port 5 and the ventilation air supply air passage 7. The air supply port 3, the return air port 4 that takes in the return air from the room, and the indoor air taken in from the return air port 4 through the return air port 4 and the ventilation exhaust air passage 8 are taken out of the ventilation device 1. It has a ventilation exhaust port 6 for exhausting air to the air. The outside air port 5 and the ventilation / exhaust port 6 are arranged side by side.
The ventilation air supply air passage 7 is provided with an air supply fan 9 for generating an air flow from the outside air port 5 toward the indoor air supply port 3, and the ventilation exhaust air passage 8 is provided with a ventilation exhaust port 6 from the return air port 4. An exhaust fan 10 is provided to generate an air flow toward the airflow.
Further, a heat exchanger 11 is provided in the middle of each of the ventilation air supply air passage 7 and the ventilation exhaust air passage 8 to exchange heat with each other without mixing the air flowing through the ventilation air supply air passage 7 and the ventilation exhaust air passage 8. This ventilation device 1 is a ventilation device with a heat exchange function.
　この換気装置１には、シャッター装置２が一体に取り付けられる。シャッター装置２の本体部１２は、室外につながり室外からの空気を取り入れる外部給気口１３と、外部給気口１３から取り入れた空気を換気装置１の外気口５に誘導する給気風路１４を有している。さらに、本体部１２は、外気口５と並んで配置された換気排気口６から排出される空気を誘導する排気風路１５と、排気風路１５に誘導された空気を室外に排出する外部排気口１６を有している。 A shutter device 2 is integrally attached to this ventilation device 1. The main body 12 of the shutter device 2 has an external air supply port 13 that connects to the outside and takes in air from the outside, and an air supply air passage 14 that guides the air taken in from the outside air supply port 13 to the outside air port 5 of the ventilation device 1. Have. Further, the main body 12 has an exhaust air passage 15 for guiding the air discharged from the ventilation exhaust port 6 arranged alongside the outside air port 5, and an external exhaust for discharging the air guided to the exhaust air passage 15 to the outside. It has a mouth 16.
　給気風路１４内には、本体部１２に設けられた回転軸１８に回転可能に支持された平板状の給気シャッター１７と、この給気シャッター１７が外部給気口１３に近づく方向に回転した状態で当接して、給気シャッター１７と共に給気風路１４を遮断する遮断板１９が設けられている。つまり、この給気シャッター１７は、上述のように、外部給気口１３に近づく方向に回転して遮断板１９と当接する状態で給気風路１４を遮断し、外部給気口１３から離れる方向に回転して遮断板１９と離間して隙間を生じている状態で給気風路１４を開放する構成になっている。 In the air supply air passage 14, a flat plate-shaped air supply shutter 17 rotatably supported by a rotating shaft 18 provided in the main body 12, and the air supply shutter 17 rotates in a direction approaching the external air supply port 13. A blocking plate 19 is provided which abuts the air supply shutter 17 and shuts off the air supply air passage 14 together with the air supply shutter 17. That is, as described above, the air supply shutter 17 rotates in a direction approaching the external air supply port 13 to shut off the air supply air passage 14 in a state of being in contact with the blocking plate 19, and is in a direction away from the external air supply port 13. The air supply air passage 14 is opened in a state where the air supply air passage 14 is separated from the shutoff plate 19 and has a gap.
　排気風路１５内には、給気シャッター１７が支持された回転軸１８に回転可能に支持された平板状の排気シャッター２０が設けられている。給気シャッター１７と排気シャッター２０は一体に形成され、同じ回転軸１８に回転可能に支持されているので、回転する際は連動して同じ方向に回転する。また、給気シャッター１７と排気シャッター２０は回転軸１８を挟んで形成されているので、回転時の移動方向は互いに逆方向となり、例えば、図１において時計回りに回転する際は、給気シャッター１７は上方に、排気シャッター２０は下方に移動する。 In the exhaust air passage 15, a flat plate-shaped exhaust shutter 20 rotatably supported by a rotating shaft 18 on which the air supply shutter 17 is supported is provided. Since the air supply shutter 17 and the exhaust shutter 20 are integrally formed and rotatably supported by the same rotation shaft 18, when they rotate, they rotate in the same direction in conjunction with each other. Further, since the air supply shutter 17 and the exhaust shutter 20 are formed so as to sandwich the rotation shaft 18, the moving directions during rotation are opposite to each other. For example, when rotating clockwise in FIG. 1, the air supply shutter is used. 17 moves upward and the exhaust shutter 20 moves downward.
　また、排気風路１５内には、排気シャッター２０が外部排気口１６に近づく方向に回転した状態で当接して、排気シャッター２０がそれ以上に回転しないように回転を規制する排気シャッターストッパーとしてのストッパー２１が設けられている。つまり、この排気シャッター２０は、外部排気口１６に近づく方向に回転してストッパー２１に当接し、排気風路１５の途中に隙間が維持される状態で排気風路を開放し、外部排気口１６から離れる方向に回転した状態では、換気排気口６を塞いで排気風路１５を遮断する構成になっている。 Further, as an exhaust shutter stopper that regulates the rotation of the exhaust shutter 20 so that the exhaust shutter 20 abuts in the exhaust air passage 15 in a state of being rotated in a direction approaching the external exhaust port 16 so that the exhaust shutter 20 does not rotate any more. A stopper 21 is provided. That is, the exhaust shutter 20 rotates in a direction approaching the external exhaust port 16 and comes into contact with the stopper 21, and the exhaust air passage is opened while a gap is maintained in the middle of the exhaust air passage 15, and the external exhaust port 16 is opened. In the state of rotating in the direction away from the air, the ventilation exhaust port 6 is closed to shut off the exhaust air passage 15.
　そして、排気シャッター２０は、給気シャッター１７が外部給気口１３から外気口５に向かって給気風路１４を流れる空気の風圧を受けて生じるモーメントよりも大きいモーメントを、外部排気口１６から換気排気口６に向かって排気風路１５を流れる空気の風圧を受けて生じるような構成となっている。具体的には、排気風路１５内にある平板状の排気シャッター２０の面積が、給気風路１４内にある平板状の給気シャッター１７の面積よりも大きくなるように構成されている。同じ風速の気流が給気風路１４と排気風路１５に流れる場合、その気流を受ける面積が大きい方が受ける力も大きくなるため、このような構成においては、給気シャッター１７が給気風路１４内を流れる空気の風圧を受けることで給気シャッター１７に発生するモーメントよりも、排気シャッター２０が排気風路１５内を流れる空気の風圧を受けることで排気シャッター２０に発生するモーメントの方が大きくなる。 Then, the exhaust shutter 20 ventilates a moment larger than the moment generated by the air supply shutter 17 receiving the wind pressure of the air flowing through the air supply air passage 14 from the external air supply port 13 toward the outside air port 5 from the external exhaust port 16. It is configured to be generated by receiving the wind pressure of the air flowing through the exhaust air passage 15 toward the exhaust port 6. Specifically, the area of the flat plate-shaped exhaust shutter 20 in the exhaust air passage 15 is configured to be larger than the area of the flat plate-shaped air supply shutter 17 in the air supply air passage 14. When an air flow having the same wind speed flows through the air supply air passage 14 and the exhaust air passage 15, the larger the area receiving the air flow, the larger the force received. Therefore, in such a configuration, the air supply shutter 17 is inside the air supply air passage 14. The moment generated in the exhaust shutter 20 by receiving the wind pressure of the air flowing in the exhaust air passage 15 becomes larger than the moment generated in the air supply shutter 17 by receiving the wind pressure of the air flowing through the exhaust air passage 15. ..
　次に、このように構成された換気装置１およびシャッター装置２の動作について、説明する。図１は換気装置１が稼働し、給気ファン９、排気ファン１０が回転して換気給気風路７内、換気排気風路８内にそれぞれ矢印で示すような気流が発生している状態を示している。給気ファン９が回転することにより、換気装置１の外気口５側には負圧が生じ、この負圧によりシャッター装置２の給気風路１４において外部給気口１３から外気口５に向けた気流が発生する。この気流による風圧によって、給気シャッター１７には外部給気口１３から離れる方向、すなわち図１における反時計周り方向に回転させる力が働く。また、排気ファン１０が回転することにより、換気装置１の換気排気口６には、空気を外部に排出しようとする気流が生じるため、シャッター装置２の排気風路１５において換気排気口６から外部排気口１６に向けた気流が発生する。この気流による風圧によって、排気シャッター２０には外部排気口１６に近づく方向、すなわち図１における反時計周り方向に回転させる力が働く。このとき、給気シャッター１７と排気シャッター２０には、同じ回転方向に回転させようとする力がかかるため、両シャッターとも図１における反時計周り方向に回転する。そして、排気シャッター２０は、外部排気口１６に近づく方向に回転して、ストッパー２１に当接すると回転が規制され、給気シャッター１７と排気シャッター２０は回転を停止する。 Next, the operation of the ventilation device 1 and the shutter device 2 configured in this way will be described. FIG. 1 shows a state in which the ventilation device 1 is operating, the air supply fan 9 and the exhaust fan 10 are rotated, and airflows as shown by arrows are generated in the ventilation air supply air passage 7 and the ventilation exhaust air passage 8, respectively. Shows. When the air supply fan 9 rotates, a negative pressure is generated on the outside air port 5 side of the ventilation device 1, and this negative pressure causes the external air supply port 13 to be directed toward the outside air port 5 in the air supply air passage 14 of the shutter device 2. Airflow is generated. Due to the wind pressure generated by this air flow, a force that rotates the air supply shutter 17 in a direction away from the external air supply port 13, that is, in the counterclockwise direction in FIG. 1 acts. Further, since the rotation of the exhaust fan 10 causes an air flow to discharge air to the outside in the ventilation exhaust port 6 of the ventilation device 1, the exhaust air passage 15 of the shutter device 2 is external from the ventilation exhaust port 6. An air flow toward the exhaust port 16 is generated. The wind pressure generated by this airflow exerts a force on the exhaust shutter 20 to rotate the exhaust shutter 20 in the direction approaching the external exhaust port 16, that is, in the counterclockwise direction in FIG. At this time, since the air supply shutter 17 and the exhaust shutter 20 are subjected to a force to rotate in the same rotation direction, both shutters rotate in the counterclockwise direction in FIG. Then, the exhaust shutter 20 rotates in a direction approaching the external exhaust port 16, and when it comes into contact with the stopper 21, the rotation is restricted, and the air supply shutter 17 and the exhaust shutter 20 stop rotating.
　このような動作の結果、給気シャッター１７は、外部給気口１３から離れる方向に回転して、給気風路遮断部材である遮断板１９と離間して隙間を生じている状態で、給気風路１４を開放するとともに、排気シャッター２０は外部排気口１６に近づく方向に回転して、排気風路１５の途中に隙間が維持される状態で排気風路を開放する。
　以上のようにして、このシャッター装置２は、換気装置１が稼働した場合において、換気装置１が発生させる風圧を利用して、給気シャッター１７、排気シャッター２０ともに給気風路１４、排気風路１５を開放して、外気の給気、室内空気の排気を妨げないように動作する。 As a result of such an operation, the air supply shutter 17 rotates in a direction away from the external air supply port 13, and is separated from the cutoff plate 19 which is a supply air passage blocking member to form a gap. While opening the passage 14, the exhaust shutter 20 rotates in a direction approaching the external exhaust port 16 to open the exhaust air passage in a state where a gap is maintained in the middle of the exhaust air passage 15.
As described above, this shutter device 2 utilizes the wind pressure generated by the ventilation device 1 when the ventilation device 1 is operated, and both the air supply shutter 17 and the exhaust shutter 20 have the supply air passage 14 and the exhaust air passage. 15 is opened to operate so as not to interfere with the supply of outside air and the exhaust of indoor air.
　次に、換気装置１の停止時、室内外の気圧の差などの環境によって、換気装置１に流入しようとする気流があった場合の動作について説明する。図２は、換気装置１が停止した時のシャッター装置２の横断面図である。換気装置１が停止している状態において、外部給気口１３および外部排気口１６を介して換気装置１に流入しようとする気流が生じると、シャッター装置２の給気風路１４において外部給気口１３から外気口５に向けた気流が、また排気風路１５において外部排気口１６から換気排気口６に向けた気流がそれぞれ発生する。これらの気流によって、給気シャッター１７には外部給気口１３から離れる方向、すなわち図１における反時計周り方向に回転させる力が働き、一方で排気シャッター２０には外部排気口１６から離れる方向、すなわち図１において時計周り方向に回転させる力が働く。つまり、給気シャッター１７と排気シャッター２０にそれぞれ異なる方向に回転させようとする力がかかる。
　このとき、排気シャッター２０の面積が給気シャッター１７の面積よりも大きいことから、同じ風速の気流が給気風路１４と排気風路１５に流れる場合、給気シャッター１７が給気風路１４内を流れる空気の風圧を受けることで給気シャッター１７に発生するモーメントよりも、排気シャッター２０が排気風路１５内を流れる空気の風圧を受けることで排気シャッター２０に発生するモーメントの方が大きくなるため、給気シャッター１７を反時計周り方向に回転させる力よりも排気シャッター２０を時計周り方向に回転させる力の方が大きくなる。その結果、一体に形成され、同じ回転軸１８に回転可能に支持されて連動して回転する給気シャッター１７と排気シャッター２０はともに、時計周り方向に回転する。そして、給気シャッター１７が外部給気口１３に近づく方向に回転して、給気シャッターストッパーであり給気風路遮断部材である遮断板１９と当接すると、回転が規制され、図２に示す状態で給気シャッター１７と排気シャッター２０は回転を停止する。このとき、排気風路１５内において、排気シャッター２０は換気排気口６を塞ぐ排気風路遮断部材であるシャッター装置２の本体部１２と当接する。 Next, the operation when there is an air flow that is about to flow into the ventilation device 1 due to an environment such as a difference in air pressure between indoors and outdoors when the ventilation device 1 is stopped will be described. FIG. 2 is a cross-sectional view of the shutter device 2 when the ventilation device 1 is stopped. When the airflow that tries to flow into the ventilation device 1 through the external air supply port 13 and the external exhaust port 16 is generated while the ventilation device 1 is stopped, the external air supply port 14 in the air supply air passage 14 of the shutter device 2 An air flow from 13 to the outside air port 5 and an air flow from the external exhaust port 16 to the ventilation exhaust port 6 are generated in the exhaust air passage 15. Due to these airflows, the air supply shutter 17 is subjected to a force for rotating the air supply shutter 17 in the direction away from the external air supply port 13, that is, in the counterclockwise direction in FIG. 1, while the exhaust shutter 20 is in the direction away from the external exhaust port 16. That is, in FIG. 1, a force that rotates in the clockwise direction acts. That is, a force is applied to the air supply shutter 17 and the exhaust shutter 20 to rotate them in different directions.
At this time, since the area of the exhaust shutter 20 is larger than the area of the air supply shutter 17, when an air flow having the same wind velocity flows through the air supply air passage 14 and the exhaust air passage 15, the air supply shutter 17 passes through the air supply air passage 14. This is because the moment generated in the exhaust shutter 20 by receiving the wind pressure of the air flowing in the exhaust air passage 15 is larger than the moment generated in the air supply shutter 17 by receiving the wind pressure of the flowing air. The force for rotating the exhaust shutter 20 in the clockwise direction is larger than the force for rotating the air supply shutter 17 in the counterclockwise direction. As a result, both the air supply shutter 17 and the exhaust shutter 20, which are integrally formed and rotatably supported by the same rotating shaft 18 and rotate in conjunction with each other, rotate in the clockwise direction. Then, when the air supply shutter 17 rotates in a direction approaching the external air supply port 13 and comes into contact with the cutoff plate 19 which is the air supply shutter stopper and the air supply air passage blocking member, the rotation is restricted and is shown in FIG. In this state, the air supply shutter 17 and the exhaust shutter 20 stop rotating. At this time, in the exhaust air passage 15, the exhaust shutter 20 comes into contact with the main body 12 of the shutter device 2 which is an exhaust air passage blocking member that closes the ventilation exhaust port 6.
　このような動作の結果、給気シャッター１７は、外部給気口１３に近づく方向に回転して、遮断板１９と当接して、給気風路１４を遮断するとともに、排気シャッター２０は外部排気口１６から離れる方向に回転して、換気排気口６を塞ぐ状態で排気風路１５を遮断する。
　以上のようにして、このシャッター装置２は、換気装置１の停止時に換気装置１外から内部に流入しようとする気流があった場合には、流入しようとする気流の風圧を利用して、給気シャッター１７、排気シャッター２０ともに給気風路１４、排気風路１５を遮断して、外気が換気装置１の内部に入らないように動作する。 As a result of such an operation, the air supply shutter 17 rotates in a direction approaching the external air supply port 13 and comes into contact with the blocking plate 19 to block the air supply air passage 14, and the exhaust shutter 20 is the external exhaust port. It rotates in a direction away from 16 and shuts off the exhaust air passage 15 in a state of blocking the ventilation exhaust port 6.
As described above, when the ventilation device 1 is stopped and there is an air flow that is going to flow into the inside from the outside of the ventilation device 1, the shutter device 2 is supplied by using the wind pressure of the air flow that is going to flow in. Both the air shutter 17 and the exhaust shutter 20 shut off the air supply air passage 14 and the exhaust air passage 15 so that the outside air does not enter the inside of the ventilation device 1.
　このように、実施の形態１のシャッター装置２においては、排気シャッター２０の面積が給気シャッター１７の面積よりも大きいことから、同じ風速の気流が給気風路１４と排気風路１５に流れる場合、給気シャッター１７が給気風路１４内を流れる空気の風圧を受けることで給気シャッター１７に発生するモーメントよりも、排気シャッター２０が排気風路１５内を流れる空気の風圧を受けることで排気シャッター２０に発生するモーメントの方が大きくなる。これにより、換気装置の停止時に外気口５および換気排気口６を介して換気装置に流入しようとする気流があっても、給気風路１４、排気風路１５を風圧によって遮断し、外部の空気あるいは異物が換気装置１内に流入することを防ぐことができるという効果を奏する。 As described above, in the shutter device 2 of the first embodiment, since the area of the exhaust shutter 20 is larger than the area of the air supply shutter 17, the airflow of the same wind velocity flows into the air supply air passage 14 and the exhaust air passage 15. , The exhaust shutter 20 is exhausted by receiving the wind pressure of the air flowing in the exhaust air passage 15 rather than the moment generated in the air supply shutter 17 by the air supply shutter 17 receiving the wind pressure of the air flowing in the air supply air passage 14. The moment generated in the shutter 20 is larger. As a result, even if there is an air flow that tries to flow into the ventilation device through the outside air port 5 and the ventilation exhaust port 6 when the ventilation device is stopped, the supply air passage 14 and the exhaust air passage 15 are blocked by the wind pressure, and the outside air is blocked. Alternatively, it has the effect of preventing foreign matter from flowing into the ventilation device 1.
実施の形態２．
　実施の形態１では、シャッター装置２の給気風路１４内に一つの平板からなる給気シャッター１７、排気風路１５内に一つの平板からなる排気シャッター２０を設ける構成を示した。この場合、各シャッターは回転力を生じる程度の風圧を受けるのに十分な面積が必要であるが、一方で、面積が大きいほど、給気風路１４、排気風路１５を開放する際の気流の妨げになる。この実施の形態２では、給気シャッター１７、排気シャッター２０が実施の形態１と同様の回転力を生じる程度の十分な風圧を受けられるとともに、給気風路１４、排気風路１５が開放されるとき気流をスムーズに流して圧損を低減するようにした構成を説明する。 Embodiment 2.
In the first embodiment, an air supply shutter 17 made of one flat plate is provided in the air supply air passage 14 of the shutter device 2, and an exhaust shutter 20 made of one flat plate is provided in the exhaust air passage 15. In this case, each shutter needs an area sufficient to receive a wind pressure sufficient to generate a rotational force, but on the other hand, the larger the area, the more the airflow when opening the supply air passage 14 and the exhaust air passage 15. It gets in the way. In the second embodiment, the air supply shutter 17 and the exhaust shutter 20 can receive sufficient wind pressure to generate the same rotational force as in the first embodiment, and the air supply air passage 14 and the exhaust air passage 15 are opened. A configuration in which the air flow is smoothly flowed to reduce the pressure loss will be described.
　図３、図４は、実施の形態２におけるシャッター装置２の横断面図であり、図３は換気装置１が稼働したとき、図４は換気装置１が停止した時をそれぞれ示している。
　図３、図４に示すように、シャッター装置２には、給気風路１４内に補助給気シャッター２２、排気風路１５内に補助排気シャッター２３を備えており、その他の部分は実施の形態１の換気装置１およびシャッター装置２と同様である。 3 and 4 are cross-sectional views of the shutter device 2 according to the second embodiment, FIG. 3 shows the time when the ventilation device 1 is operated, and FIG. 4 shows the time when the ventilation device 1 is stopped.
As shown in FIGS. 3 and 4, the shutter device 2 is provided with an auxiliary air supply shutter 22 in the air supply air passage 14 and an auxiliary exhaust shutter 23 in the exhaust air passage 15, and the other parts are the embodiment. It is the same as the ventilation device 1 and the shutter device 2 of 1.
　給気風路遮断部材である遮断板１９には、給気窓２４と回転軸２５が設けられ、回転軸２５に補助給気シャッター２２が回転自在に設けられている。また、給気シャッター１７の回転軸１８とは反対側の先端には、外気口５に向けて伸びる第一突起部２６が設けられている。さらに、補助給気シャッター２２の回転軸２５に支持される部分には、給気シャッター１７に向かって伸びるＬ字状の第二突起部２７が設けられている。この第二突起部２７は、図４に示すように、補助給気シャッター２２が給気窓２４を遮断する位置にあり、給気シャッター１７が遮断板１９に当接する位置にあるとき、第一突起部２６と接する構成となっており、この状態では、第二突起部２７が第一突起部２６側に回転することが規制されている。このため、図４の状態では、補助給気シャッター２２も回転することが規制される。 The shutoff plate 19, which is a supply air passage cutoff member, is provided with an air supply window 24 and a rotary shaft 25, and an auxiliary air supply shutter 22 is rotatably provided on the rotary shaft 25. Further, a first protrusion 26 extending toward the outside air port 5 is provided at the tip of the air supply shutter 17 on the side opposite to the rotation shaft 18. Further, an L-shaped second protrusion 27 extending toward the air supply shutter 17 is provided at a portion of the auxiliary air supply shutter 22 supported by the rotation shaft 25. As shown in FIG. 4, the second protrusion 27 is first when the auxiliary air supply shutter 22 is at a position where the air supply window 24 is blocked and the air supply shutter 17 is at a position where the air supply shutter 17 is in contact with the blocking plate 19. It is configured to be in contact with the protrusion 26, and in this state, the second protrusion 27 is restricted from rotating toward the first protrusion 26. Therefore, in the state of FIG. 4, the auxiliary air supply shutter 22 is also restricted from rotating.
　なお、補助給気シャッター２２には、補助給気シャッター２２を外部給気口１３に近づく方向に回転させる力を付与する窓遮断弾性体としてばね（図示せず）が設けられている。このばねにより付与される回転力は、無風状態では補助給気シャッター２２を外部給気口１３に近づく方向に回転させる程度であり、かつ、給気ファン９により生じる気流によって補助給気シャッター２２に生じる力よりは弱い回転力に調整されている。
　また、排気シャッター２０には、排気窓２８と回転軸２９が設けられ、この回転軸２９に、外部排気口１６から離れる方向に回転した状態で排気風路１５を遮断し、外部排気口１６に近づく方向に回転した状態で排気風路１５を開放する補助排気シャッター２３が回転自在に設けられている。 The auxiliary air supply shutter 22 is provided with a spring (not shown) as a window blocking elastic body that applies a force for rotating the auxiliary air supply shutter 22 in a direction approaching the external air supply port 13. The rotational force applied by this spring is such that the auxiliary air supply shutter 22 is rotated in a direction approaching the external air supply port 13 in a windless state, and the air flow generated by the air supply fan 9 causes the auxiliary air supply shutter 22 to rotate. The rotational force is adjusted to be weaker than the generated force.
Further, the exhaust shutter 20 is provided with an exhaust window 28 and a rotary shaft 29, and the rotary shaft 29 shuts off the exhaust air passage 15 in a state of being rotated in a direction away from the external exhaust port 16 to the external exhaust port 16. An auxiliary exhaust shutter 23 that opens the exhaust air passage 15 in a state of being rotated in the approaching direction is rotatably provided.
　このように構成したシャッター装置２の動作について説明する。図３は換気装置１が稼働し、給気ファン９、排気ファン１０が回転して換気給気風路７内、換気排気風路８内にそれぞれ矢印で示すような気流が発生している状態を示している。実施の形態１と同様に、給気ファン９が回転することで生じる気流による風圧で、給気シャッター１７には外部給気口１３から離れる方向に、排気シャッター２０には外部排気口１６に近づく方向に、それぞれ回転させる力が働き、両シャッターとも図３における反時計回り方向に回転する。これにより、実施の形態１と同様、給気シャッター１７は給気風路１４を、排気シャッター２０は排気風路１５をそれぞれ開放する。 The operation of the shutter device 2 configured in this way will be described. FIG. 3 shows a state in which the ventilation device 1 is operating, the air supply fan 9 and the exhaust fan 10 are rotated, and airflows as shown by arrows are generated in the ventilation air supply air passage 7 and the ventilation exhaust air passage 8, respectively. Shows. Similar to the first embodiment, the air pressure generated by the rotation of the air supply fan 9 causes the air supply shutter 17 to move away from the external air supply port 13 and the exhaust shutter 20 to approach the external exhaust port 16. A force for rotating each of them acts in each direction, and both shutters rotate in the counterclockwise direction in FIG. As a result, as in the first embodiment, the air supply shutter 17 opens the air supply air passage 14, and the exhaust shutter 20 opens the exhaust air passage 15.
　さらに、給気シャッター１７が回転し始めて遮断板１９と離れると、第一突起部２６が第二突起部２７から離れるため、補助給気シャッター２２の回転が規制されない状態になり、外部給気口１３から外気口５に向けた気流によって、補助給気シャッター２２も外部給気口１３から離れる方向に回転して、給気窓２４を開放する。
　一方、補助排気シャッター２３は外部排気口１６の方に回転する規制を受けていないため、換気排気口６から外部排気口１６に向けた気流によって、外部排気口１６に近づく方向に回転して、排気窓２８を開放する。
　以上のように、補助給気シャッター２２が給気窓２４を、補助排気シャッター２３は排気窓２８をそれぞれ開放するので、給気風路１４、排気風路１５において気流が通る面積が広がるため、圧損が低減される。 Further, when the air supply shutter 17 starts to rotate and separates from the blocking plate 19, the first protrusion 26 separates from the second protrusion 27, so that the rotation of the auxiliary air supply shutter 22 is not restricted, and the external air supply port is not restricted. The auxiliary air supply shutter 22 also rotates in a direction away from the external air supply port 13 due to the airflow from the 13 to the outside air port 5, and opens the air supply window 24.
On the other hand, since the auxiliary exhaust shutter 23 is not regulated to rotate toward the external exhaust port 16, the airflow from the ventilation exhaust port 6 toward the external exhaust port 16 causes the auxiliary exhaust shutter 23 to rotate in a direction approaching the external exhaust port 16. The exhaust window 28 is opened.
As described above, since the auxiliary air supply shutter 22 opens the supply air window 24 and the auxiliary exhaust shutter 23 opens the exhaust window 28, the area through which the airflow passes in the supply air passage 14 and the exhaust air passage 15 expands, resulting in pressure loss. Is reduced.
　両シャッターの反時計回り方向への回転が進み、排気シャッター２０がストッパー２１に当接すると回転が規制され、給気シャッター１７と排気シャッター２０は回転を停止し、給気シャッター１７が給気風路１４を、排気シャッター２０が排気風路１５をそれぞれ開放した状態が維持される。 The rotation of both shutters in the counterclockwise direction progresses, and when the exhaust shutter 20 comes into contact with the stopper 21, the rotation is restricted, the air supply shutter 17 and the exhaust shutter 20 stop rotating, and the air supply shutter 17 enters the air supply air passage. 14 is maintained in a state in which the exhaust shutter 20 opens the exhaust air passage 15.
　次に、換気装置１が停止している状態における動作について説明する。図４は、換気装置１が停止した時のシャッター装置２の横断面図である。補助給気シャッター２２に設けられたばねによって、補助給気シャッター２２は外部給気口１３に近づく方向に回転して、給気窓２４を遮蔽している。
　換気装置１が停止している状態において、外部給気口１３および外部排気口１６を介して換気装置１に流入しようとする気流が生じると、補助排気シャッター２３は、排気風路１５内を流れる空気の風圧を受けて排気窓２８に向かって回転し、補助排気シャッター２３により排気窓２８は遮断された状態になる。
　このような状態では、給気シャッター１７と補助給気シャッター２２が形成する表面の面積が実施の形態１の給気シャッター１７と同じ面積になり、排気シャッター２０と補助排気シャッター２３が形成する表面の面積が実施の形態１の排気シャッター２０と同じ面積になる。したがって、実施の形態１と同様に、給気シャッター１７と排気シャッター２０はともに、図４における時計周り方向に回転する。そして、給気シャッター１７が遮断板１９に当接すると、回転が規制され、図４に示す状態で給気シャッター１７と排気シャッター２０は回転を停止する。 Next, the operation in the state where the ventilation device 1 is stopped will be described. FIG. 4 is a cross-sectional view of the shutter device 2 when the ventilation device 1 is stopped. The auxiliary air supply shutter 22 is rotated in the direction approaching the external air supply port 13 by the spring provided in the auxiliary air supply shutter 22 to shield the air supply window 24.
When the airflow that tries to flow into the ventilation device 1 through the external air supply port 13 and the external exhaust port 16 is generated while the ventilation device 1 is stopped, the auxiliary exhaust shutter 23 flows in the exhaust air passage 15. It rotates toward the exhaust window 28 under the wind pressure of the air, and the exhaust window 28 is shut off by the auxiliary exhaust shutter 23.
In such a state, the area of the surface formed by the air supply shutter 17 and the auxiliary air supply shutter 22 is the same as the area of the air supply shutter 17 of the first embodiment, and the surface formed by the exhaust shutter 20 and the auxiliary exhaust shutter 23. The area of is the same as the area of the exhaust shutter 20 of the first embodiment. Therefore, as in the first embodiment, both the air supply shutter 17 and the exhaust shutter 20 rotate in the clockwise direction in FIG. When the air supply shutter 17 comes into contact with the blocking plate 19, the rotation is restricted, and the air supply shutter 17 and the exhaust shutter 20 stop rotating in the state shown in FIG.
　図４のような状態において、補助給気シャッター２２が給気風路１４内を流れる空気の風圧を受けると、補助給気シャッター２２には図４における反時計周り方向に回転させようとする力が働く。しかし、給気シャッター１７の第一突起部２６と補助給気シャッター２２の第二突起部２７が当接して、補助給気シャッター２２の回転を規制しているため、補助給気シャッター２２が給気窓２４を遮蔽した状態が維持される。 When the auxiliary air supply shutter 22 receives the wind pressure of the air flowing in the air supply air passage 14 in the state as shown in FIG. 4, the auxiliary air supply shutter 22 receives a force for rotating the auxiliary air supply shutter 22 in the counterclockwise direction in FIG. work. However, since the first protrusion 26 of the air supply shutter 17 and the second protrusion 27 of the auxiliary air supply shutter 22 are in contact with each other to regulate the rotation of the auxiliary air supply shutter 22, the auxiliary air supply shutter 22 is supplied. The state in which the air window 24 is shielded is maintained.
　以上のようにして、このシャッター装置２は、換気装置１の停止時に換気装置１外から内部に流入しようとする気流があった場合には、流入しようとする気流の風圧、およびばねの力により、外気等が換気装置１の内部に入らないように各風路を遮断する。すなわち、補助給気シャッター２２、補助排気シャッター２３が給気窓２４、排気窓２８を遮蔽するとともに、給気シャッター１７、排気シャッター２０がそれぞれ給気風路１４、排気風路１５を遮断して、外気等が換気装置１の内部に入らないように動作する。また、給気窓２４、排気窓２８を設けることにより、それぞれの風路において気流が通る面積が広がるため、圧損が低減され、より効果的に給気および排気を行うことができる。 As described above, when there is an air flow that tries to flow into the inside from the outside of the ventilation device 1 when the ventilation device 1 is stopped, the shutter device 2 is affected by the wind pressure of the air flow that is about to flow in and the force of the spring. , Each air passage is shut off so that outside air and the like do not enter the inside of the ventilation device 1. That is, the auxiliary air supply shutter 22 and the auxiliary exhaust shutter 23 shield the air supply window 24 and the exhaust window 28, and the air supply shutter 17 and the exhaust shutter 20 block the air supply air passage 14 and the exhaust air passage 15, respectively. It operates so that outside air or the like does not enter the inside of the ventilation device 1. Further, by providing the air supply window 24 and the exhaust window 28, the area through which the airflow passes in each air passage is widened, so that the pressure loss is reduced and air supply and exhaust can be performed more effectively.
　なお、上記実施の形態ではいずれも、補助給気シャッター２２、補助排気シャッター２３を設ける例を挙げたが、給気風路１４内に補助給気シャッター２２を設け、排気風路１５内に補助排気シャッター２３を設けない構成、あるいは、給気風路１４内に補助給気シャッター２２を設けず、排気風路１５内に補助排気シャッター２３を設ける構成にしてもよい。 In each of the above embodiments, the auxiliary air supply shutter 22 and the auxiliary exhaust shutter 23 are provided, but the auxiliary air supply shutter 22 is provided in the air supply air passage 14 and the auxiliary exhaust air is provided in the exhaust air passage 15. The configuration may be such that the shutter 23 is not provided, or the auxiliary exhaust shutter 23 is provided in the exhaust air passage 15 without providing the auxiliary air supply shutter 22 in the air supply air passage 14.
　また、上記実施の形態ではいずれも、シャッター装置２が換気装置１に一体に取り付けられた例を説明したが、本開示のシャッター装置２は、換気装置１に一体に取り付けられるものでなく、換気装置と別体で構成して、既存の換気装置に取り付けるものでも、上記実施の形態と同様の効果を奏する。 Further, in each of the above embodiments, the example in which the shutter device 2 is integrally attached to the ventilation device 1 has been described, but the shutter device 2 of the present disclosure is not integrally attached to the ventilation device 1 and is ventilated. Even if it is configured separately from the device and attached to an existing ventilation device, the same effect as that of the above embodiment can be obtained.
　さらに、上記実施の形態ではいずれも、熱交換器を搭載した換気装置を説明したが、本開示のシャッター装置は、給気風路と排気風路を備える換気装置であれば、熱交換器を搭載していない換気装置であっても適用できる。例えば、連動して運転する別々の給気型換気装置と排気型換気装置をシャッター装置２の給気風路１４、排気風路１５にダクト等で接続する構成としてもよい。 Further, in each of the above embodiments, the ventilation device equipped with the heat exchanger has been described, but the shutter device of the present disclosure is equipped with the heat exchanger if it is a ventilation device provided with an air supply air passage and an exhaust air passage. It can be applied even if the ventilation system is not installed. For example, separate air supply type ventilation devices and exhaust type ventilation devices that are operated in conjunction with each other may be connected to the supply air passage 14 and the exhaust air passage 15 of the shutter device 2 by a duct or the like.
　さらに、上記実施の形態ではいずれも、外部給気口１３の位置を本体部１２の底面の右側に配置した例を説明したが、図５に示すように外部給気口１３の位置を実施の形態１における外部給気口１３よりも回転軸１８に近づけて構成すると、給気シャッター１７を開放している状態において給気シャッター１７と遮断板１９との隙間に気流が通りやすくなる。 Further, in each of the above embodiments, the example in which the position of the external air supply port 13 is arranged on the right side of the bottom surface of the main body portion 12 has been described, but the position of the external air supply port 13 is implemented as shown in FIG. When the rotation shaft 18 is closer to the rotation shaft 18 than the external air supply port 13 in the first embodiment, the airflow can easily pass through the gap between the air supply shutter 17 and the blocking plate 19 when the air supply shutter 17 is open.
　また、上記実施の形態ではいずれも、換気装置１に流入しようとする気流があった場合、排気シャッター２０に生じるモーメントが給気シャッター１７に生じるモーメントよりも優位となるように、排気シャッター２０の面積が給気シャッター１７の面積よりも大きくなるように構成したが、各シャッターで生じるモーメントの関係を上記のようにする構成はこれに限られない。
　例えば、給気シャッター１７の回転軸１８とは反対側の先端から回転軸１８までの距離よりも、排気シャッター２０の回転軸１８とは反対側の先端から回転軸１８までの距離が長くなるようにすることで、上記のモーメントの関係を成立させるように構成してもよい。
　あるいは、給気シャッター１７および排気シャッター２０の形状だけでなく、外部給気口１３、外部排気口１６の位置、または形状を適宜設定することによって上記のモーメントの関係を成立させることもできる。例えば、図６に示すように、給気シャッター１７の面積と排気シャッター２０の面積を同程度とし、外部給気口１３の位置を外部排気口１６よりも回転軸１８に近づけて構成する。これにより、給気シャッター１７に気流が直接当たる場所から回転軸１８までの距離が、排気シャッター２０に気流が直接当たる場所から回転軸１８までの距離よりも近くなり、上記のモーメントの関係を成立させることができる。あるいは、図７に示すように、給気シャッター１７の面積と排気シャッター２０の面積を同程度とし、かつ外部給気口１３と外部排気口１６の回転軸１８からの距離を同程度とし、外部給気口１３の開口面積を外部排気口１６の開口面積より小さく構成する。これにより、外部給気口１３から流入する気流の風圧が、外部排気口１６から流入する気流の風圧よりも弱くなるため、上記のモーメントの関係を成立させることができる。 Further, in any of the above embodiments, when there is an air flow that is about to flow into the ventilation device 1, the moment generated in the exhaust shutter 20 is superior to the moment generated in the air supply shutter 17. The area is configured to be larger than the area of the air supply shutter 17, but the configuration in which the relationship between the moments generated by each shutter is as described above is not limited to this.
For example, the distance from the tip of the exhaust shutter 20 opposite to the rotating shaft 18 to the rotating shaft 18 is longer than the distance from the tip of the air supply shutter 17 opposite to the rotating shaft 18. By setting, it may be configured to establish the above-mentioned moment relationship.
Alternatively, the above-mentioned moment relationship can be established by appropriately setting the positions or shapes of the external air supply port 13 and the external exhaust port 16 as well as the shapes of the air supply shutter 17 and the exhaust shutter 20. For example, as shown in FIG. 6, the area of the air supply shutter 17 and the area of the exhaust shutter 20 are set to be about the same, and the position of the external air supply port 13 is configured to be closer to the rotating shaft 18 than to the external exhaust port 16. As a result, the distance from the place where the airflow directly hits the air supply shutter 17 to the rotating shaft 18 becomes closer than the distance from the place where the airflow directly hits the exhaust shutter 20 to the rotating shaft 18, and the above-mentioned moment relationship is established. Can be made to. Alternatively, as shown in FIG. 7, the area of the air supply shutter 17 and the area of the exhaust shutter 20 are set to be about the same, and the distance between the external air supply port 13 and the external exhaust port 16 from the rotating shaft 18 is set to be about the same. The opening area of the air supply port 13 is smaller than the opening area of the external exhaust port 16. As a result, the wind pressure of the airflow flowing in from the external air supply port 13 becomes weaker than the wind pressure of the airflow flowing in from the external exhaust port 16, so that the above-mentioned moment relationship can be established.
　以上のように、給気シャッター１７、排気シャッター２０、外部給気口１３、外部排気口１６の形状や位置など複数の要素を適宜設定することで、給気シャッター１７に生じるモーメントよりも排気シャッター２０に生じるモーメントが大きくなるように、シャッター装置２を構成する。 As described above, by appropriately setting a plurality of elements such as the shape and position of the air supply shutter 17, the exhaust shutter 20, the external air supply port 13, and the external exhaust port 16, the exhaust shutter is more than the moment generated in the air supply shutter 17. The shutter device 2 is configured so that the moment generated in 20 becomes large.
　なお、換気装置１に流入しようとする気流がない場合に、給気シャッター１７および排気シャッター２０が各風路を遮断する状態を維持するための構成を付加してもよい。図８（ａ）は、実施の形態１におけるシャッター装置２の本体部１２の回転軸１８付近に給気シャッター１７を下に押すばね３０を設けた場合の横断面図であり、図８（ｂ）は、実施の形態１におけるシャッター装置２の本体部１２の回転軸１８付近に排気シャッター２０を上に押す風路遮断弾性体としてばね３０を設けた場合の断面図である。また、図９は、実施の形態１におけるシャッター装置２の本体部１２に、排気シャッター２０を上に引っ張る風路遮断弾性体としてゴム３１を設けた場合の横断面図である。 It should be noted that a configuration may be added for maintaining a state in which the air supply shutter 17 and the exhaust shutter 20 block each air passage when there is no airflow to flow into the ventilation device 1. FIG. 8A is a cross-sectional view of the case where a spring 30 for pushing the air supply shutter 17 downward is provided near the rotation shaft 18 of the main body 12 of the shutter device 2 according to the first embodiment, and is a cross-sectional view taken along the line 8 (b). ) Is a cross-sectional view in the case where a spring 30 is provided as an air passage blocking elastic body that pushes the exhaust shutter 20 upward near the rotation shaft 18 of the main body 12 of the shutter device 2 in the first embodiment. Further, FIG. 9 is a cross-sectional view of the main body 12 of the shutter device 2 according to the first embodiment, in which a rubber 31 is provided as an air passage blocking elastic body that pulls the exhaust shutter 20 upward.
　図８（ａ）、図８（ｂ）に示したばね３０、あるいは図９に示したゴム３１を設けることで、換気装置１を停止した状態で換気装置１に流入しようとする気流がない場合でも、給気風路１４と排気風路１５は遮断された状態を維持できる。つまり、ばね３０あるいはゴム３１の弾性力により、給気シャッター１７が外部給気口１３に近づく方向に回転するとともに、排気シャッター２０が換気排気口６に近づく方向に回転し、給気シャッター１７が遮断板１９と当接する状態で各シャッターは回転を停止する。その結果、換気装置１を停止した状態で換気装置１に流入しようとする気流がなくても、給気風路１４と排気風路１５は遮断される状態を維持される。
　なお、ばね３０またはゴム３１の弾性力は、無風状態では給気シャッター１７と排気シャッター２０を回転させる回転力を生じるとともに、換気装置１の稼働時に給気ファン９および排気ファン１０により生じる気流によって各シャッターに生じる回転力よりは弱い回転力を生じる程度に調整する。
　なお、風路遮断弾性体として、ばね３０あるいはゴム３１を設けた例を示したが、ばね３０、ゴム３１以外の弾性体を用いてもよい。さらに上記のばね３０あるいはゴム３１と同様の回転力を生じるものであれば取り付ける場所、構造は他のものでもよい。 By providing the spring 30 shown in FIGS. 8A and 8B or the rubber 31 shown in FIG. 9, even when there is no airflow to flow into the ventilation device 1 with the ventilation device 1 stopped. , The air supply air passage 14 and the exhaust air passage 15 can be maintained in a closed state. That is, due to the elastic force of the spring 30 or the rubber 31, the air supply shutter 17 rotates in the direction approaching the external air supply port 13, and the exhaust shutter 20 rotates in the direction approaching the ventilation exhaust port 6, so that the air supply shutter 17 is rotated. Each shutter stops rotating in a state of being in contact with the blocking plate 19. As a result, even if there is no airflow that tries to flow into the ventilation device 1 with the ventilation device 1 stopped, the supply air passage 14 and the exhaust air passage 15 are maintained in a blocked state.
The elastic force of the spring 30 or the rubber 31 generates a rotational force that rotates the air supply shutter 17 and the exhaust shutter 20 in a windless state, and is generated by the airflow generated by the air supply fan 9 and the exhaust fan 10 when the ventilation device 1 is operating. Adjust to the extent that a rotational force weaker than the rotational force generated by each shutter is generated.
Although an example in which the spring 30 or the rubber 31 is provided as the air passage blocking elastic body is shown, an elastic body other than the spring 30 and the rubber 31 may be used. Further, the place and structure for mounting may be other as long as it generates the same rotational force as the spring 30 or the rubber 31 described above.
　また、実施の形態２のように給気シャッター１７に補助給気シャッター２２を設けた場合に、風路遮断弾性体としてのばね３０またはゴム３１が、給気シャッター１７を外部給気口１３に近づく方向に回転させる力よりも、窓遮断弾性体としてのばねが補助給気シャッター２２を外部給気口１３に近づく方向に回転させる力のほうが強くなるようにするとよい。このように構成することで、給気シャッター１７、補助給気シャッター２２が開いた状態で無風状態となったときには、給気シャッター１７より先に補助給気シャッター２２が閉じ、その後に給気シャッター１７が閉じる。これにより、補助給気シャッター２２の第二突起部２７が給気シャッター１７と干渉しない位置に静止した後、給気シャッター１７が下りてきて閉じることになり、第一突起部２６と第二突起部２７とが当接して補助給気シャッター２２の回転を規制する状態にスムーズに移行する。また、給気シャッター１７、補助給気シャッター２２が閉じている状態で、給気ファン９が回転して給気風路１４内に流入する気流が発生すると、補助給気シャッター２２より先に給気シャッター１７が開いて、給気シャッター１７の第一突起部２６と補助給気シャッター２２の第二突起部２７の係合が解除される。これにより、補助給気シャッター２２の回転が可能となり、補助給気シャッター２２の回転がスムーズに開始される。 Further, when the auxiliary air supply shutter 22 is provided in the air supply shutter 17 as in the second embodiment, the spring 30 or the rubber 31 as the air passage blocking elastic body makes the air supply shutter 17 the external air supply port 13. It is preferable that the force of the spring as the window blocking elastic body rotating the auxiliary air supply shutter 22 in the direction of approaching the external air supply port 13 is stronger than the force of rotating the auxiliary air supply shutter 22 in the approaching direction. With this configuration, when the air supply shutter 17 and the auxiliary air supply shutter 22 are open and there is no wind, the auxiliary air supply shutter 22 closes before the air supply shutter 17, and then the air supply shutter. 17 closes. As a result, after the second protrusion 27 of the auxiliary air supply shutter 22 stands still at a position where it does not interfere with the air supply shutter 17, the air supply shutter 17 comes down and closes, and the first protrusion 26 and the second protrusion It smoothly shifts to a state in which the auxiliary air supply shutter 22 comes into contact with the portion 27 to restrict the rotation of the auxiliary air supply shutter 22. Further, when the air supply fan 9 rotates and an air flow flowing into the air supply air passage 14 is generated while the air supply shutter 17 and the auxiliary air supply shutter 22 are closed, the air supply is performed before the auxiliary air supply shutter 22. The shutter 17 opens, and the engagement between the first protrusion 26 of the air supply shutter 17 and the second protrusion 27 of the auxiliary air supply shutter 22 is released. As a result, the auxiliary air supply shutter 22 can be rotated, and the rotation of the auxiliary air supply shutter 22 is smoothly started.
１　換気装置、２　シャッター装置、３　室内給気口、４　還気口、５　外気口、６　換気排気口、７　換気給気風路、８　換気排気風路、９　給気ファン、１０　排気ファン、１１　熱交換器、１２　本体部、１３　外部給気口、１４　給気風路、１５　排気風路、１６　外部排気口、１７　給気シャッター、１８　回転軸、１９　遮断板、２０　排気シャッター、２１　ストッパー、２２　補助給気シャッター、２３　補助排気シャッター、２４　給気窓、２５　回転軸、２６　第一突起部、２７　第二突起部、２８　排気窓、２９　回転軸、３０　ばね、３１　ゴム　 1 Ventilation device, 2 Shutter device, 3 Indoor air supply port, 4 Return air port, 5 Outside air port, 6 Ventilation exhaust port, 7 Ventilation air supply air passage, 8 Ventilation exhaust air passage, 9 Air supply fan, 10 Exhaust fan, 11 Heat exchanger, 12 main body, 13 external air supply port, 14 air supply air passage, 15 exhaust air passage, 16 external exhaust port, 17 air supply shutter, 18 rotating shaft, 19 blocking plate, 20 exhaust shutter, 21 stopper, 22 Auxiliary air supply shutter, 23 auxiliary exhaust shutter, 24 air supply window, 25 rotating shaft, 26 first protrusion, 27 second protrusion, 28 exhaust window, 29 rotating shaft, 30 spring, 31 rubber

Claims (14)

  1. 　室外につながる外部給気口を有し、前記外部給気口から換気装置の給気口に供給される空気を流す給気風路、室外につながる外部排気口を有し、前記給気口と並んで配置された前記換気装置の排気口から排出される空気を前記外部排気口に流す排気風路を有する本体部と、
    前記給気風路内に設けられ、前記本体部に設けられた回転軸に回転可能に支持され、前記外部給気口から離れる方向に回転した状態で、前記給気風路を開放し、前記外部給気口に近づく方向に回転した状態で前記給気風路を遮断する給気シャッターと、
    前記排気風路内に設けられ、前記回転軸に回転可能に支持され、前記外部排気口から離れる方向に回転した状態で前記排気風路を遮断し、前記外部排気口に近づく方向に回転した状態で前記排気風路を開放し、前記給気シャッターが前記外部給気口から前記給気口に向かって前記給気風路を流れる空気の風圧を受けて生じるモーメントよりも大きいモーメントを、前記外部排気口から前記排気口に向かって前記排気風路を流れる空気の風圧を受けて生じる排気シャッターと、
    を備えることを特徴とするシャッター装置。     It has an external air supply port connected to the outside, an air supply air passage for flowing air supplied from the external air supply port to the air supply port of the ventilation device, and an external exhaust port connected to the outside, along with the air supply port. A main body having an exhaust air passage for flowing air discharged from the exhaust port of the ventilation device arranged in the above to the external exhaust port, and
    The air supply air passage is opened in a state where the air supply air passage is provided in the air supply air passage, is rotatably supported by a rotation shaft provided in the main body portion, and is rotated in a direction away from the external air supply port, and the external air supply is supplied. An air supply shutter that shuts off the air supply air passage while rotating in the direction approaching the air opening, and
    A state in which the exhaust air passage is provided in the exhaust air passage, is rotatably supported by the rotation shaft, is rotated in a direction away from the external exhaust port, shuts off the exhaust air passage, and is rotated in a direction approaching the external exhaust port. The external exhaust is a moment larger than the moment generated by the air pressure of the air flowing through the air supply air passage from the external air supply port toward the air supply port by opening the exhaust air passage. An exhaust shutter generated by receiving the wind pressure of the air flowing through the exhaust air passage from the mouth to the exhaust port, and
    A shutter device characterized by being equipped with.
  2. 前記給気シャッターの前記外部給気口に面する面積よりも、前記排気シャッターの前記外部排気口に面する面積が大きいことを特徴とする請求項１に記載のシャッター装置。 The shutter device according to claim 1, wherein the area of the exhaust shutter facing the external exhaust port is larger than the area of the air supply shutter facing the external air supply port.
  3. 前記給気シャッターの前記回転軸とは反対側の先端から前記回転軸までの距離よりも、前記排気シャッターの前記回転軸とは反対側の先端から前記回転軸までの距離が長いことを特徴とする請求項１又は請求項２に記載のシャッター装置。 The feature is that the distance from the tip of the exhaust shutter opposite to the rotation axis to the rotation axis is longer than the distance from the tip of the air supply shutter opposite to the rotation axis to the rotation axis. The shutter device according to claim 1 or 2.
  4. 前記外部排気口は、前記外部給気口よりも前記回転軸から離れた位置に設けられることを特徴とする請求項１から請求項３のいずれか一項に記載のシャッター装置。 The shutter device according to any one of claims 1 to 3, wherein the external exhaust port is provided at a position away from the rotation axis of the external air supply port.
  5. 前記外部排気口は、前記外部給気口よりも開口面積が大きいことを特徴とする請求項１から請求項４のいずれか一項に記載のシャッター装置。 The shutter device according to any one of claims 1 to 4, wherein the external exhaust port has a larger opening area than the external air supply port.
  6. 前記給気風路内に設けられ、前記給気シャッターが回転して接触した状態で前記給気風路を遮断する給気風路遮断部材を設けることを特徴とする請求項１から請求項５のいずれか一項に記載のシャッター装置。 Any of claims 1 to 5, wherein an air supply air passage blocking member is provided in the air supply air passage and shuts off the air supply air passage in a state where the air supply shutter rotates and is in contact with the air supply air passage. The shutter device according to claim 1.
  7. 前記排気風路内に設けられ、前記排気シャッターが回転して接触した状態で前記排気風路を遮断する排気風路遮断部材を設けることを特徴とする請求項１から請求項６のいずれか一項に記載のシャッター装置。 Any one of claims 1 to 6, wherein an exhaust air passage blocking member is provided in the exhaust air passage and shuts off the exhaust air passage in a state where the exhaust shutter rotates and is in contact with the exhaust air passage. The shutter device described in the section.
  8. 前記給気シャッターが前記給気風路に前記外部給気口から離れる方向に回転した際に回転を規制し、前記給気シャッターが前記給気風路を開放する状態に維持する給気シャッターストッパーと、前記排気シャッターが前記排気風路に前記外部排気口に近づく方向に回転した際に回転を規制し、前記排気シャッターが前記排気風路を開放する状態に維持する排気シャッターストッパーとを設けることを特徴とする請求項１から請求項７のいずれか一項に記載のシャッター装置。 An air supply shutter stopper that regulates rotation when the air supply shutter rotates in the air supply air passage in a direction away from the external air supply port and maintains the air supply shutter in a state of opening the air supply air passage. It is characterized by providing an exhaust shutter stopper that regulates rotation when the exhaust shutter rotates in a direction approaching the external exhaust port in the exhaust air passage and maintains the exhaust shutter in a state of opening the exhaust air passage. The shutter device according to any one of claims 1 to 7.
  9. 前記給気シャッターを前記外部給気口に近づく方向に回転させる力を付与する風路遮断弾性体を設けることを特徴とする請求項１から請求項８のいずれか一項に記載のシャッター装置。 The shutter device according to any one of claims 1 to 8, wherein the air passage blocking elastic body is provided to apply a force for rotating the air supply shutter in a direction approaching the external air supply port.
  10. 前記給気風路遮断部材に回転可能に支持され、前記外部給気口から離れる方向に回転した状態で、前記給気風路を開放し、前記外部給気口に近づく方向に回転した状態で前記給気風路を遮断する補助給気シャッターを設けることを特徴とする請求項６に記載のシャッター装置。 The air supply air passage is opened in a state of being rotatably supported by the air supply air passage blocking member and rotated in a direction away from the external air supply port, and the air supply is in a state of being rotated in a direction approaching the external air supply port. The shutter device according to claim 6, wherein an auxiliary air supply shutter for blocking the air passage is provided.
  11. 前記給気シャッターの前記回転軸とは反対側の先端の前記給気口に面する面に設けられる第一突起部と、前記補助給気シャッターの支持される部分に設けられ、前記補助給気シャッターが前記給気風路を遮断する状態で第一突起部と接して、前記補助給気シャッターの回転を規制し、前記補助給気シャッターが前記給気風路を開放する状態で第一突起部と離れて、前記補助給気シャッターが回転可能となる第二突起部を設けることを特徴とする請求項１０に記載のシャッター装置。 The first protrusion provided on the surface of the air supply shutter opposite to the rotation axis facing the air supply port, and the auxiliary air supply provided on the supported portion of the auxiliary air supply shutter. The shutter is in contact with the first protrusion in a state of blocking the air supply air passage to restrict the rotation of the auxiliary air supply shutter, and the auxiliary air supply shutter is in contact with the first protrusion in a state of opening the air supply air passage. The shutter device according to claim 10, wherein a second protrusion is provided apart from the auxiliary air supply shutter so that the auxiliary air supply shutter can be rotated.
  12. 前記補助給気シャッターを前記外部給気口に近づく方向に回転させる力を付与する窓遮断弾性体を設けることを特徴とする請求項１１に記載のシャッター装置。 11. The shutter device according to claim 11, further comprising providing a window blocking elastic body that applies a force for rotating the auxiliary air supply shutter in a direction approaching the external air supply port.
  13. 前記排気シャッターに回転可能に支持され、前記外部排気口から離れる方向に回転した状態で、前記排気風路を遮断し、前記外部排気口に近づく方向に回転した状態で前記排気風路を開放する補助排気シャッターを設けることを特徴とする請求項１から請求項１２のいずれか一項に記載のシャッター装置。 The exhaust air passage is shut off in a state of being rotatably supported by the exhaust shutter and rotated in a direction away from the external exhaust port, and the exhaust air passage is opened in a state of being rotated in a direction approaching the external exhaust port. The shutter device according to any one of claims 1 to 12, wherein an auxiliary exhaust shutter is provided.
  14. 　室外につながる外部給気口を有し、前記外部給気口から室内につながる室内給気口に供給される空気を流す給気風路、前記室内給気口と並んで配置された室内の空気を筐体内に取り入れる室内排気口から室外につながる外部排気口に空気を流す排気風路を有する筐体と、
    前記給気風路内に設けられ、前記外部給気口から前記室内給気口に向けた気流を発生させる給気ファンと、
    前記排気風路内に設けられ、前記室内排気口から前記外部排気口に向けた気流を発生させる給気ファンと、
    前記給気風路内に設けられ、前記筐体に設けられた回転軸に回転可能に支持され、前記外部給気口から離れる方向に回転した状態で、前記給気風路を開放し、前記外部給気口に近づく方向に回転した状態で前記給気風路を遮断する給気シャッターと、
    前記排気風路内に設けられ、前記回転軸に回転可能に支持され、前記外部排気口から離れる方向に回転した状態で前記排気風路を遮断し、前記外部排気口に近づく方向に回転した状態で前記排気風路を開放し、前記給気シャッターが前記外部給気口から前記室内給気口に向かって前記給気風路を流れる空気の風圧を受けて生じるモーメントよりも大きいモーメントを、前記外部排気口から前記室内排気口に向かって前記排気風路を流れる空気の風圧を受けて生じる排気シャッターと、
    を備えることを特徴とする換気装置。     An air supply air passage that has an external air supply port connected to the outside and allows air supplied from the external air supply port to the indoor air supply port connected to the room, and indoor air arranged alongside the indoor air supply port. A housing with an exhaust air passage that allows air to flow from the indoor exhaust port that is taken into the housing to the external exhaust port that connects to the outside.
    An air supply fan provided in the air supply air passage to generate an air flow from the external air supply port to the indoor air supply port, and
    An air supply fan provided in the exhaust air passage to generate an air flow from the indoor exhaust port to the external exhaust port, and
    The air supply air passage is opened in a state where the air supply air passage is provided in the air supply air passage, is rotatably supported by a rotation shaft provided in the housing, and is rotated in a direction away from the external air supply port, and the external air supply is supplied. An air supply shutter that shuts off the air supply air passage while rotating in the direction approaching the air opening, and
    A state in which the exhaust air passage is provided in the exhaust air passage, is rotatably supported by the rotation shaft, is rotated in a direction away from the external exhaust port, shuts off the exhaust air passage, and is rotated in a direction approaching the external exhaust port. The exhaust air passage is opened, and the moment larger than the moment generated by the air supply shutter receiving the wind pressure of the air flowing through the air supply air passage from the external air supply port toward the indoor air supply port is set to the outside. An exhaust shutter generated by receiving the wind pressure of the air flowing through the exhaust air passage from the exhaust port toward the indoor exhaust port, and
    A ventilation system characterized by being equipped with.
PCT/JP2020/045702 2020-12-08 2020-12-08 Shutter device and ventilation device WO2022123656A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109531U (en) * 1980-01-24 1981-08-25
JPS579035U (en) * 1980-06-03 1982-01-18
JPS5881426U (en) * 1981-11-26 1983-06-02 株式会社東芝 Simultaneous intake and exhaust ventilation device
JPS6026235A (en) * 1983-07-22 1985-02-09 Matsushita Seiko Co Ltd Outdoor hood
JPS61110020U (en) * 1984-12-24 1986-07-12
JPH09273793A (en) * 1996-04-01 1997-10-21 Mitsubishi Electric Corp Ventilating fan in air conditioner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109531U (en) * 1980-01-24 1981-08-25
JPS579035U (en) * 1980-06-03 1982-01-18
JPS5881426U (en) * 1981-11-26 1983-06-02 株式会社東芝 Simultaneous intake and exhaust ventilation device
JPS6026235A (en) * 1983-07-22 1985-02-09 Matsushita Seiko Co Ltd Outdoor hood
JPS61110020U (en) * 1984-12-24 1986-07-12
JPH09273793A (en) * 1996-04-01 1997-10-21 Mitsubishi Electric Corp Ventilating fan in air conditioner

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