WO2022091296A1 - Dispositif de soufflante - Google Patents

Dispositif de soufflante Download PDF

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Publication number
WO2022091296A1
WO2022091296A1 PCT/JP2020/040628 JP2020040628W WO2022091296A1 WO 2022091296 A1 WO2022091296 A1 WO 2022091296A1 JP 2020040628 W JP2020040628 W JP 2020040628W WO 2022091296 A1 WO2022091296 A1 WO 2022091296A1
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WO
WIPO (PCT)
Prior art keywords
substrate
space
box body
orifice
opening
Prior art date
Application number
PCT/JP2020/040628
Other languages
English (en)
Japanese (ja)
Inventor
大輔 永▲崎▼
和真 宮本
吉保 戸田
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/JP2020/040628 priority Critical patent/WO2022091296A1/fr
Priority to JP2022558711A priority patent/JP7493610B2/ja
Publication of WO2022091296A1 publication Critical patent/WO2022091296A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F24F7/10—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 air supply, or exhaust, through perforated wall, floor or ceiling

Definitions

  • the present disclosure relates to a blower device provided with a box body for accommodating a control board.
  • Patent Document 1 discloses a ceiling-embedded blower device including one control board equipped with a sensor for detecting an indoor environment and a power supply control circuit, and a box body for accommodating the control board. There is. In order to allow the sensor to come into contact with the air in the room, the box body is formed with an opening that communicates the inside and the outside of the box body.
  • Patent Document 1 does not disclose any means for suppressing the occurrence of defects due to the adhesion of dust to the control substrate.
  • the present disclosure has been made in view of the above, and an object of the present invention is to obtain a blower device in which defects of the control board are less likely to occur due to adhesion of dust to the control board.
  • the blower device includes a box-shaped casing having an intake port for taking in air in the room and an exhaust port for exhausting the taken in air, and a casing. It is installed inside the fan to generate airflow that flows into the inside of the casing from the intake port and flows out from the exhaust port, and is installed so as to partition the inside of the casing between the intake port and the fan.
  • An orifice formed with a suction port through which it passes, a sensor that detects the indoor environment, a control board that is electrically connected to the sensor and fan, and a box that is attached to the orifice and houses the sensor and control board.
  • the control board has a first board on which a power supply control circuit is mounted and a second board on which a sensor is mounted.
  • the box body is formed with a first partition wall that divides the inside of the box body into a first space and a second space, and an opening that communicates the second space and the outside of the box body. ..
  • a first substrate is arranged in the first space.
  • a second substrate is arranged in the second space. The voltage of the second substrate is lower than the voltage of the first substrate.
  • the blower device according to the present disclosure has the effect that defects of the control board due to adhesion of dust to the control board are less likely to occur.
  • FIG. 3 is a cross-sectional view showing a blower device according to the first embodiment, showing a state in which the blower device is installed behind the ceiling of a building. It is a figure which looked at the blower device which concerns on Embodiment 1 from the room side, and is the figure which showed the state which showed the state which removed the decorative grill shown in FIG. The figure which showed the state which the part inside the room side from the fan was removed from the blower shown in FIG. Sectional drawing along the IV-IV line shown in FIG. An exploded perspective view showing the internal structure of the box, omitting the cover of the box. Sectional drawing along the VI-VI line shown in FIG. Sectional drawing along line VII-VII shown in FIG. Sectional drawing along line VIII-VIII shown in FIG.
  • blower device according to the embodiment will be described in detail below based on the drawings.
  • FIG. 1 is a cross-sectional view showing a blower device 1 according to the first embodiment, and is a view showing a state in which the blower device 1 is installed in the ceiling 22 of a building.
  • FIG. 2 is a view of the blower device 1 according to the first embodiment as viewed from the indoor side, and is a view showing a state in which the decorative grill 6 shown in FIG. 1 is removed.
  • FIG. 3 is a diagram showing a state in which the parts on the indoor side of the fan 3 are removed from the blower 1 shown in FIG.
  • the blower 1 includes a casing 2, a fan 3, an orifice 5, a decorative grill 6, and a box body 7.
  • the blower device 1 is a device that sucks indoor air and blows it toward an outdoor space or another indoor space.
  • the case where the blower device 1 is installed behind the ceiling 22 of the building is illustrated, but the purpose is not to limit the installation location of the blower device 1.
  • the installation location of the blower device 1 may be inside the wall of the building, under the floor, or the like.
  • the ceiling 23 is formed with an installation hole 23a that communicates the interior with the ceiling 22.
  • the blower 1 is installed in the ceiling 22 through an installation hole 23a formed in the ceiling 23.
  • the casing 2 is embedded in the ceiling back 22 through the installation hole 23a formed in the ceiling 23, and the screw is screwed into the ceiling 23 shown in FIG. 1 through the screw hole 2f shown in FIG. 2 provided in the flange 2e of the casing 2.
  • the blower 1 is fixed to the ceiling 23.
  • the casing 2 is a box-shaped member in which an intake port 2a for taking in indoor air and an exhaust port 2b for exhausting the taken in air are formed.
  • the intake port 2a opens on the surface of the casing 2 facing the indoor side, and in the present embodiment, on the bottom surface of the casing 2.
  • the casing 2 is installed with the intake port 2a facing indoors.
  • the exhaust port 2b opens on one side surface 2c of the casing 2.
  • a duct connection port 8 for communicating the exhaust port 2b of the casing 2 and the duct 21 is provided on the side surface 2c of the casing 2 where the exhaust port 2b is formed.
  • the duct connection port 8 extends from the side surface 2c of the casing 2 in the direction perpendicular to the side surface 2c.
  • the duct connection port 8 plays a role of extending the position of air discharge from the casing 2 to a position communicating with the duct 21.
  • the duct connection port 8 is formed in a cylindrical shape.
  • the outer shape of the duct connection port 8 has a stepped shape having portions having different diameters, and the diameter becomes smaller as the distance from the casing 2 increases. Since the outer shape of the duct connection port 8 is stepped with different diameters, a plurality of ducts 21 having different inner diameters can be selectively connected to the duct connection port 8 and the duct 21 is fixed to the duct connection port 8. The work of wrapping the tape is easy.
  • a shutter 9 that opens and closes by wind pressure is installed inside the duct connection port 8.
  • the shutter 9 is opened by wind pressure when the blower device 1 is operated, and the inside of the duct connection port 8 is closed by the weight of the shutter 9 when the blower device 1 is stopped.
  • the blower device 1 functions as an exhaust ventilation fan for exhausting indoor air to the outside when the duct 21 is connected to the outside, and for circulation to circulate the air inside the room when the duct 21 is connected to another indoor space. Functions as a ventilation fan.
  • the duct 21 When the duct 21 is connected to the outside of the room, the duct 21 extends to the outside and is connected to a hood (not shown) provided on the outer wall of the building to form a ventilation air passage for ventilating the air inside the building.
  • the fan 3 is a device installed inside the casing 2 to generate an air flow that flows into the inside of the casing 2 from the intake port 2a and flows out from the exhaust port 2b.
  • the fan 3 has a motor 4 and blades 3a attached to the shaft 4a of the motor 4. In FIG. 1, a part of the blade 3a is broken and shown.
  • the motor 4 rotates the blade 3a.
  • the motor 4 is fixed to the top surface 2d of the casing 2.
  • the air passage component 10 is installed so as to surround the outer periphery of the blade 3a of the fan 3.
  • the air passage component 10 is open to the indoor side.
  • the orifice 5 is a member installed so as to partition the inside of the casing 2 between the intake port 2a and the fan 3.
  • the orifice 5 is formed with a suction port 5a through which the airflow generated by the fan 3 passes.
  • the orifice 5 closes the opening on the indoor side of the air passage component 10.
  • the air passage component 10 and the orifice 5 form an air passage through which air flows inside the casing 2.
  • the orifice 5 is fixed to the casing 2 so as to press the air passage component 10 from the indoor side toward the top surface 2d.
  • the orifice 5 is fixed to the orifice fixing component 19 attached to the side surface 2c of the casing 2 shown in FIG. 3 with the screw 20 shown in FIG.
  • the orifice 5 and the air passage component 10 shown in FIG. 1 may be crimped and connected by welding or the like, and then the air passage component 10 may be fixed to the top surface 2d, or the orifice 5 and the air passage component 10 may be connected to each other.
  • a resin component integrally molded with resin may be fixed to the top surface 2d.
  • parts such as the spring fixing part 11 and the box body 7 are attached to the surface of the orifice 5 facing the indoor side by screws or locking. Further, a terminal cover 12 that can be opened and closed is attached to the orifice 5.
  • a power supply connection device 13 shown in FIG. 3 connected to an external power supply (not shown) is arranged.
  • the power connection device 13 is isolated from the air passage by the terminal cover 12. As a result, it is possible to suppress the intrusion of dust, moisture, etc. from the air passage into the power supply connection device 13.
  • the power connection device 13 and the motor 4 shown in FIG. 1 are electrically connected via a motor wire (not shown).
  • the electric power supplied from an external power source (not shown) is transmitted to the motor 4 via the power supply connecting device 13 and the motor electric wire.
  • the rotational motion of the motor 4 is transmitted to the blades 3a, and the blades 3a rotate.
  • an air flow from the intake port 2a to the exhaust port 2b is generated in the air passage formed by the air passage component 10 and the orifice 5.
  • the decorative grill 6 is arranged on the surface of the ceiling 23 facing the indoor side so as to cover the installation hole 23a from below.
  • the decorative grill 6 is installed on the indoor side of the orifice 5 and the box body 7.
  • the decorative grill 6 is a design part for hiding internal parts such as the orifice 5 and the box body 7 so as not to be seen from the room. As a result, the appearance of the blower 1 when viewed from the indoor side is not impaired.
  • the decorative grill 6 includes a spring 14.
  • the decorative grill 6 is fixed to the orifice 5 by hooking the spring 14 on the spring fixing component 11 attached to the orifice 5.
  • FIG. 4 is a cross-sectional view taken along the line IV-IV shown in FIG.
  • FIG. 5 is an exploded perspective view showing the internal structure of the box body 7 by omitting the cover 7b of the box body 7.
  • the box body 7 is a member attached to the surface of the orifice 5 facing the indoor side and accommodating the sensor 15 and the control board 16 described later.
  • the box body 7 has a box-shaped case 7a having an opening on one side and a cover 7b that closes the opening of the case 7a.
  • the box body 7 is installed with the case 7a facing the orifice 5.
  • the cover 7b can be opened and closed by attaching and detaching.
  • the cover 7b closes the opening of the case 7a when closed.
  • the longitudinal direction of the box 7 and the inflow direction of the air flow indicated by the white arrow in FIG. 4 intersect each other.
  • the longitudinal direction of the box 7 and the inflow direction of the air flow indicated by the white arrow in FIG. 4 are orthogonal to each other.
  • the box body 7 has a first partition wall 7c that divides the inside of the box body 7 into a first space 7d and a second space 7e in the longitudinal direction of the box body 7. Is formed.
  • the first partition wall 7c projects from the bottom wall 7g of the case 7a toward the cover 7b in the present embodiment.
  • the shape of the first partition wall 7c is a convex shape protruding from the case 7a toward the cover 7b.
  • the tip of the first partition wall 7c is in contact with the cover 7b.
  • the cover 7b is formed with a recess 7f into which the first partition wall 7c is inserted.
  • the recess 7f is formed by two walls protruding from the cover 7b toward the case 7a, but a part of the cover 7b may be recessed from the other.
  • the cover 7b is formed with an opening 7h that communicates the second space 7e with the outside of the box body 7.
  • the openings 7h include an upstream opening 7i that allows air outside the box 7 to flow into the second space 7e, and a downstream opening 7j that discharges the air from the second space 7e to the outside of the box 7. Includes.
  • the number of the upstream side opening 7i and the number of the downstream side opening 7j are not particularly limited, but are two each in the present embodiment.
  • the shape of the upstream opening 7i and the shape of the downstream opening 7j are not particularly limited, but are slit-shaped in the present embodiment.
  • the position when the sensor 15 is projected onto the cover 7b is between the upstream opening 7i and the downstream opening 7j. That is, when the sensor 15 is projected onto the cover 7b, the upstream opening 7i and the downstream opening 7j are provided so as to sandwich the sensor 15 in between.
  • a sensor 15 for detecting the indoor environment and a control board 16 electrically connected to the sensor 15 and the motor 4 shown in FIG. 1 are installed inside the box 7.
  • the sensor 15 is various environmental sensors such as a temperature sensor, a humidity sensor, a miscellaneous gas sensor, and a CO 2 sensor.
  • the control board 16 has a first board 16a on which the power supply control circuit is mounted and a second board 16b on which the sensor 15 is mounted.
  • a first substrate 16a is arranged in the first space 7d.
  • a second substrate 16b is arranged in the second space 7e.
  • the first substrate 16a is electrically connected to the motor 4 and an external power source (not shown).
  • the voltage of the second substrate 16b is lower than the voltage of the first substrate 16a.
  • the voltage of the second substrate 16b is preferably less than 48 volts and the voltage of the first substrate 16a is preferably 48 volts or more.
  • the term "voltage" means the potential difference between the reference potential of the substrate and the ground.
  • the second substrate 16b is arranged at a position separated from the orifice 5 by 10 mm or more.
  • the first distance D1 from the solder portion of the mounted component on the second substrate 16b to the orifice 5 is preferably 10 mm or more.
  • FIG. 6 is a cross-sectional view taken along the VI-VI line shown in FIG.
  • the second substrate 16b is arranged at a position separated from the side surface 2c of the casing 2 by 10 mm or more.
  • the second distance D2 from the mounted component on the second substrate 16b and the solder portion to the side surface 2c of the casing 2 is preferably 10 mm or more.
  • the second substrate 16b may be arranged at a position separated from at least one of the orifice 5 and the casing 2 by 10 mm or more.
  • the box body 7 and the orifice 5 are arranged at positions where the wall surrounding the second space 7e and the orifice 5 are separated from each other in the box body 7 shown in FIG. A part of the bottom wall 7g becomes a part of the wall surrounding the second space 7e.
  • the box body 7 and the orifice 5 are arranged at positions where the orifice 5 is separated from the portion of the bottom wall 7g that becomes a part of the wall surrounding the second space 7e.
  • FIG. 7 is a cross-sectional view taken along the line VII-VII shown in FIG.
  • FIG. 8 is a cross-sectional view taken along the line VIII-VIII shown in FIG.
  • the connection portion 17 is a plurality of lead wires 18 that electrically connect the second substrate 16b and the power supply control circuit of the first substrate 16a.
  • the connection portion 17 may be, for example, a connector.
  • the first partition wall 7c is formed with a passage hole 7k through which the lead wire 18 passes. As shown in FIG.
  • a gap 7 m is formed between the inner wall of the passing hole 7k and the lead wire 18 in a state where a plurality of lead wires 18 are passed through the passing hole 7k.
  • the gap area of the gap 7m is less than the opening area of the downstream opening 7j shown in FIG. It is preferable to set to.
  • the box body 7 is further formed with a second partition wall 7n that partitions the sensor 15 and the connection portion 17.
  • the second partition wall 7n is integrally formed with the cover 7b.
  • the second partition wall 7n projects from the cover 7b toward the bottom wall 7g of the case 7a.
  • the tip of the second partition wall 7n is in contact with the second substrate 16b.
  • the blower 1 accommodates a sensor 15 for detecting an indoor environment, a control board 16 electrically connected to the sensor 15, a sensor 15 and a control board 16. It is provided with a box body 7 to be used. Further, the control board 16 has a first board 16a on which a power supply control circuit is mounted and a second board 16b on which a sensor 15 is mounted. In the box body 7, the inside of the box body 7 is first. A first partition wall 7c is formed which divides the space 7d and the second space 7e. Further, the first substrate 16a is arranged in the first space 7d, and the second substrate 16b is arranged in the second space 7e.
  • control substrate 16 is separated into the first substrate 16a and the second substrate 16b, and the first substrate 16a and the second substrate 16b are separated into the same box body 7.
  • a structure that allows them to be placed in separate spaces With such a configuration, a substrate having a lower voltage than that of the first substrate 16a can be used for the second substrate 16b to which dust easily adheres to the sensor 15 in order to bring the indoor air into contact with the sensor 15. Therefore, it is possible to suppress the occurrence of defects in the second substrate 16b due to the adhesion of dust to the second substrate 16b.
  • the intrusion of dust from the second space 7e in which the second substrate 16b is arranged to the first space 7d in which the first substrate 16a is arranged can be suppressed by the first partition wall 7c. Therefore, even when a substrate having a voltage higher than that of the second substrate 16b is used for the first substrate 16a on which the power supply control circuit is mounted, it is possible to suppress the occurrence of defects in the first substrate 16a.
  • the control substrate 16 is separated into the first substrate 16a and the second substrate 16b, and then the first substrate 16a and the second substrate 16b are separated into the first substrate 16b.
  • the voltage of the second substrate 16b can be set to less than 48 volts. Therefore, even if dust invades the second space 7e from the upstream opening 7i shown in FIG. 2 and adheres to the second substrate 16b, the second substrate is adhered to the second substrate 16b. It is possible to suppress the occurrence of the defect of 16b.
  • the second board 16b When the voltage of the second board 16b becomes low, for example, when the voltage of the second board 16b is less than 48 volts, the second board 16b may be easily affected by external noise.
  • the second substrate 16b is arranged at a position separated from the orifice 5 and the casing 2 by 10 mm or more, so that the second substrate 16b is separated from the orifice 5 and the casing 2. Is less susceptible to external noise.
  • the box body 7 and the orifice 5 are arranged so that the wall surrounding the second space 7e of the box body 7 and the orifice 5 are separated from each other. Since heat transfer from the orifice 5 to the second space 7e and the second substrate 16b can be prevented, the detection accuracy of the sensor 15 mounted on the second substrate 16b is improved to improve the reliability of the product. Can be done.
  • the shape of the first partition wall 7c is a convex shape protruding from the case 7a toward the cover 7b, and the first partition wall 7c is inserted into the cover 7b.
  • the recess 7f is formed.
  • the contact distance between the first partition wall 7c and the inner wall of the recess 7f becomes long, and the sealing property between the first partition wall 7c and the cover 7b can be improved. Therefore, it is possible to further suppress the intrusion of dust from the second space 7e into the first space 7d, and it is possible to further suppress the adhesion of dust to the first substrate 16a.
  • the gap area of the gap 7 m when the area obtained by subtracting the cross-sectional area for the total number of lead wires 18 from the opening area of the passage hole 7k shown in FIG. 8 is the gap area of the gap 7 m, the gap area is shown in FIG.
  • the area By setting the area to be smaller than the opening area of the downstream opening 7j shown, air is easily discharged from the downstream opening 7j having a lower pressure loss than the gap 7m. Therefore, it is possible to further suppress the intrusion of dust from the second space 7e shown in FIG. 7 into the first space 7d, and further suppress the adhesion of dust to the first substrate 16a. can.
  • the box body 7 is formed with a second partition wall 7n that partitions the sensor 15 and the lead wire 18, and the second partition wall 7n is a second partition wall.
  • the space between the sensor 15 and the first substrate 16a is doubly shielded by the first partition wall 7c and the second partition wall 7n. Therefore, it is possible to further suppress the intrusion of dust from the second space 7e into the first space 7d, and it is possible to further suppress the adhesion of dust to the first substrate 16a.
  • the same first substrate 16 is separated into the first substrate 16a on which the power supply control circuit is mounted and the second substrate 16b on which the sensor 15 is mounted.
  • Various sensors 15 can be replaced with the second substrate 16b while using the substrate 16a of the above.
  • the first partition wall 7c shown in FIG. 4 is formed in the case 7a and the recess 7f is formed in the cover 7b, but the first partition wall 7c is formed in the cover 7b and the recess 7f. May be formed in the case 7a. That is, the shape of the first partition wall 7c is a convex shape protruding from one of the case 7a and the cover 7b toward the other, and the first partition wall 7c is inserted into the other of the case 7a and the cover 7b. It suffices if the concave portion 7f is formed.
  • the configuration shown in the above embodiment is an example, and can be combined with another known technique, and a part of the configuration can be omitted or changed without departing from the gist. Is.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

Dispositif de soufflante (1) comprenant un boîtier, un ventilateur, un orifice (5), un capteur (15) destiné à détecter l'environnement dans une pièce, une carte de commande (16) qui est électriquement connectée au capteur (15) et au ventilateur, et un corps de boîte (7) qui est fixé à l'orifice (5) et reçoit le capteur (15) et la carte de commande (16). La carte de commande (16) présente une première carte (16a) sur laquelle est monté un circuit de commande de source d'alimentation et une seconde carte (16b) sur laquelle est monté le capteur (15). Le corps de boîte (7) présente une première paroi de séparation (7c) qui sépare l'intérieur du corps de boîte (7) en un premier espace (7d) et un second espace (7e) et présente une ouverture qui accueille le second espace (7e) à l'extérieur du corps de boîte (7). La première carte (16a) est disposée dans le premier espace (7d). La seconde carte (16b) est disposée dans le second espace (7e). La tension de la seconde carte (16b) est inférieure à la tension de la première carte (16a).
PCT/JP2020/040628 2020-10-29 2020-10-29 Dispositif de soufflante WO2022091296A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2020/040628 WO2022091296A1 (fr) 2020-10-29 2020-10-29 Dispositif de soufflante
JP2022558711A JP7493610B2 (ja) 2020-10-29 2020-10-29 送風装置

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Application Number Priority Date Filing Date Title
PCT/JP2020/040628 WO2022091296A1 (fr) 2020-10-29 2020-10-29 Dispositif de soufflante

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WO2022091296A1 true WO2022091296A1 (fr) 2022-05-05

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09137986A (ja) * 1995-11-14 1997-05-27 Toshiba Corp 天井用換気扇
JP2009186042A (ja) * 2008-02-04 2009-08-20 Panasonic Corp 天井埋込形換気扇
JP2015206560A (ja) * 2014-04-22 2015-11-19 三菱電機株式会社 換気扇
JP2017009249A (ja) * 2015-06-25 2017-01-12 三菱電機株式会社 換気扇
JP2018105584A (ja) * 2016-12-28 2018-07-05 パナソニックＩｐマネジメント株式会社 換気扇

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019158325A (ja) 2018-03-13 2019-09-19 パナソニックＩｐマネジメント株式会社 換気装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09137986A (ja) * 1995-11-14 1997-05-27 Toshiba Corp 天井用換気扇
JP2009186042A (ja) * 2008-02-04 2009-08-20 Panasonic Corp 天井埋込形換気扇
JP2015206560A (ja) * 2014-04-22 2015-11-19 三菱電機株式会社 換気扇
JP2017009249A (ja) * 2015-06-25 2017-01-12 三菱電機株式会社 換気扇
JP2018105584A (ja) * 2016-12-28 2018-07-05 パナソニックＩｐマネジメント株式会社 換気扇

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JPWO2022091296A1 (fr) 2022-05-05

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