WO2021095130A1 - 熱交換型換気装置 - Google Patents

熱交換型換気装置 Download PDF

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Publication number
WO2021095130A1
WO2021095130A1 PCT/JP2019/044397 JP2019044397W WO2021095130A1 WO 2021095130 A1 WO2021095130 A1 WO 2021095130A1 JP 2019044397 W JP2019044397 W JP 2019044397W WO 2021095130 A1 WO2021095130 A1 WO 2021095130A1
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WIPO (PCT)
Prior art keywords
heat exchange
air
air passage
wall surface
convex portion
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2019/044397
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English (en)
French (fr)
Japanese (ja)
Inventor
伊藤　弘樹
福太郎 長田
庸充 松原
雄一 安田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2021555665A priority Critical patent/JP7237190B2/ja
Priority to PCT/JP2019/044397 priority patent/WO2021095130A1/ja
Publication of WO2021095130A1 publication Critical patent/WO2021095130A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

Definitions

  • the present invention relates to a heat exchange type ventilation device having a heat exchange air passage that allows air to pass through a heat exchange element and a bypass air passage that bypasses the heat exchange element and allows air to pass through.
  • a heat exchange type ventilation device that is installed in a building and ventilates while exchanging heat between the air from the outside and the air from the room is known.
  • an air supply air passage and an exhaust air passage are provided inside the housing. Air from the outside to the inside passes through the air supply air passage. Air from the room to the outside passes through the exhaust air passage.
  • a heat exchange element is provided inside the housing to exchange heat between the air passing through the air supply air passage and the air passing through the exhaust air passage.
  • one or both of the air supply air passage and the exhaust air passage provided inside the housing are provided with a bypass air passage that allows air to pass through without passing through the heat exchange element. May be done.
  • a damper for switching between the heat exchange air passage passing through the heat exchange element and the bypass air passage such as the air supply air passage and the exhaust air passage is provided.
  • a damper provided in a ventilation device such as a heat exchange type ventilation device is rotatably supported around a shaft portion of the damper itself and is provided inside the housing. There is. The damper switches between the heat exchange air passage and the bypass air passage by rotating around the shaft portion.
  • the present invention has been made in view of the above, and is a heat exchange type ventilation device capable of providing a damper for switching between a heat exchange air passage and a bypass air passage while suppressing an improvement in assembling property and an increase in manufacturing cost.
  • the purpose is to obtain.
  • the heat exchange type ventilation device has an outdoor suction port for sucking air from the outside and an indoor suction port for sucking air from the room. It is provided with a housing in which a mouth, an indoor air outlet for blowing out air from the outside, and an outdoor air outlet for blowing out air from the room are formed.
  • the heat exchange type ventilator has an air supply air passage provided inside the housing and connecting the outdoor suction port and the indoor air outlet, and an indoor suction port and the outdoor air outlet provided inside the housing. It is provided with an exhaust air passage connecting the two, and a heat exchange element that is housed inside the housing and exchanges heat between the air passing through the air supply air passage and the air passing through the exhaust air passage.
  • the heat exchange type ventilation device has an upstream opening formed in the first wall surface forming the inner wall of either the air supply air passage or the exhaust air passage upstream of the heat exchange element, and the heat exchange type ventilation device.
  • a bypass air passage connecting the downstream opening formed in the inner wall of one air passage downstream, an extension portion extending from the second wall surface forming the inner wall of one air passage upstream of the heat exchange element, and a first A tubular tubular portion provided in the extending portion at a position away from the wall surface of No. 2 is provided.
  • the heat exchange type ventilator includes a shaft portion in which one end is inserted into the tubular portion and the other end extends toward the second wall surface, and a plate portion integrally formed with the shaft portion. By rotating around the shaft portion, the plate portion moves to a position where the upstream opening is closed and a position where the upstream opening is opened.
  • the heat exchange type ventilator according to the present invention has an effect that a damper for opening and closing an opening serving as an entrance of a bypass air passage can be provided while improving assembling property and suppressing an increase in manufacturing cost.
  • FIG. 1 An exploded perspective view showing a heat exchange type ventilator according to the first embodiment of the present invention. It is a perspective view which shows the assembled state of the heat exchange type ventilator shown in FIG. A perspective view showing a state in which the control board is pulled out of the housing from the heat exchange type ventilator shown in FIG. A perspective view showing a state in which each filter and each filter lid are removed from the heat exchange type ventilator shown in FIG.
  • Top view of the heat exchange type ventilator according to the first embodiment Bottom view of the heat exchange type ventilator according to the first embodiment
  • Front view of the heat exchange type ventilator according to the first embodiment Rear view of the heat exchange type ventilator according to the first embodiment
  • FIG. 9 is a cross-sectional view taken along the line XIV-XIV shown in FIG. 9, showing a state in which the inlet of the bypass air passage is blocked.
  • FIG. 9 is a cross-sectional view taken along the line XIV-XIV shown in FIG.
  • FIG. 9 showing a state in which the inlet of the bypass air passage is opened.
  • Perspective view of the damper unit according to the first embodiment An exploded perspective view of the damper unit according to the first embodiment.
  • the view of the damper in Embodiment 1 along the arrow P shown in FIG. The view which saw the wall surface component part in Embodiment 1 along the arrow P shown in FIG.
  • FIG. 5 is a partially enlarged cross-sectional view of a portion in which the cap is inserted into the through hole in the first embodiment, showing the cap and the wall constituent portion according to the modified example.
  • FIG. 1 is an exploded perspective view showing a heat exchange type ventilation device 100 according to a first embodiment of the present invention.
  • FIG. 2 is a perspective view showing the assembled state of the heat exchange type ventilator 100 shown in FIG. 1, and is a view showing a state in which the heat exchange type ventilator 100 is hung on the wall surface 30 of the building and installed.
  • FIG. 3 is a perspective view showing a state in which the control board 15 is pulled out of the housing 1 from the heat exchange type ventilation device 100 shown in FIG.
  • FIG. 4 is a perspective view showing a state in which the filters 5, 6 and 7 and the filter lids 20, 21 and 22 are removed from the heat exchange type ventilator 100 shown in FIG. As shown in FIG.
  • the heat exchange type ventilator 100 includes a housing 1, a heat exchange element 2, an air supply blower 3, an exhaust blower 4, an outside air filter 5, an exhaust filter 6, and a supply. It is provided with an air filter 7. Further, the heat exchange type ventilation device 100 includes an outdoor suction port 8, an indoor suction port 9, an indoor air outlet 10, an outdoor air outlet 11, a drain pan 12, a drain port 13, and an operation unit 14. And a control board 15.
  • the heat exchange type ventilation device 100 is a device that ventilates the room while exchanging heat between the air from the outside and the air from the room. As shown in FIG. 2, the heat exchange type ventilation device 100 is installed on the wall surface 30 of the building so as to be hung near the ceiling surface 31.
  • the housing 1 is a box-shaped member that constitutes the outer shell of the heat exchange type ventilator 100.
  • the shape of the housing 1 may be a cube, but in the present embodiment, it is a rectangular parallelepiped.
  • the housing 1 has a top plate 1a, a bottom plate 1b, a front plate 1c, a back plate 1d, a left side plate 1e, and a right side plate 1f.
  • the plate portion of the housing 1 in contact with the wall surface 30 is the back plate 1d
  • the plate portion arranged on the opposite side of the back plate 1d from the wall surface 30 is the front plate 1c.
  • the normal direction of the front plate 1c is the front
  • the normal direction of the back plate 1d is the rear
  • the vertical direction seen from the user facing the front plate 1c is the vertical direction.
  • the left-right direction as seen from the user facing 1c is the left-right direction.
  • the normal of the top plate 1a faces upward.
  • the top plate 1a has a rectangular shape in a plan view.
  • the top plate 1a is provided with an outdoor suction port 8 for sucking air from the outside into the housing 1 and an indoor suction port 9 for sucking air from the room into the housing 1. ..
  • the top plate 1a is provided with an indoor air outlet 10 for blowing air from the outside to the outside of the housing 1 and an outdoor air outlet 11 for blowing air from the room to the outside of the housing 1. .
  • a duct 27a connected to the outside is connected to the outdoor suction port 8 which is a duct connection port.
  • a duct 27b connected to the room is connected to the indoor suction port 9 which is a duct connection port.
  • a duct 27c connected to the room is connected to the indoor air outlet 10 which is a duct connection port.
  • a duct 27d connected to the outside is connected to the outdoor outlet 11 which is a duct connection port.
  • On the top plate 1a an outdoor suction port 8, an indoor suction port 9, an indoor air outlet 10, an outdoor air outlet 11, and a design material 28 for hiding each duct 27a, 27b, 27c, 27d are arranged. Has been done.
  • FIG. 5 is a plan view of the heat exchange type ventilation device 100 according to the first embodiment.
  • a line extending in the direction perpendicular to the front plate 1c and the back plate 1d through the center in the left-right direction of the top plate 1a is defined as the center line C.
  • the indoor side suction port 9 and the indoor side air outlet 10 are arranged to the left of the center line C.
  • the outdoor suction port 8 and the outdoor outlet 11 are arranged to the right of the center line C.
  • the outdoor suction port 8 is arranged in front of the outdoor air outlet 11.
  • the indoor side air outlet 10 is arranged in front of the indoor side suction port 9.
  • the outdoor suction port 8 and the indoor air outlet 10 are arranged at positions that coincide with each other in the front-rear direction.
  • the indoor suction port 9 and the outdoor air outlet 11 are arranged at positions that coincide with each other in the front-rear direction.
  • FIG. 6 is a bottom view of the heat exchange type ventilator 100 according to the first embodiment.
  • the normal of the bottom plate 1b faces downward.
  • the bottom view shape of the bottom plate 1b is rectangular.
  • the bottom plate 1b is arranged below the top plate 1a apart from the top plate 1a.
  • the bottom plate 1b is formed with a substrate opening 16 that communicates the inside and the outside of the housing 1.
  • the substrate opening 16 is an opening for pulling out the control board 15 to the outside of the housing 1 and inserting the control board 15 into the housing 1.
  • the shape of the substrate opening 16 seen from below is rectangular.
  • the substrate opening 16 is arranged in front of the center of the bottom plate 1b in the front-rear direction.
  • the substrate opening 16 is arranged near the boundary portion of the bottom plate 1b with the front plate 1c.
  • the bottom plate 1b is provided with a drain port 13.
  • the drain port 13 is arranged near the right rear corner of the bottom plate 1b in the present embodiment.
  • FIG. 7 is a front view of the heat exchange type ventilator 100 according to the first embodiment.
  • the normal of the front plate 1c faces the front, which is the front.
  • the front plate 1c connects the front ends of the top plate 1a and the bottom plate 1b to each other.
  • the front view shape of the front plate 1c is rectangular.
  • the front plate 1c is formed with an outside air filter opening 17, an exhaust filter opening 18, and an air supply filter opening 19 that communicate the inside and the outside of the housing 1. Has been done.
  • the outside air filter opening 17 is an opening for attaching the outside air filter 5 inside the housing 1 and taking out the outside air filter 5 outside the housing 1.
  • the outside air filter opening 17 is arranged to the right of the center of the front plate 1c in the left-right direction.
  • the shape of the opening 17 for the outside air filter seen from the front is rectangular.
  • the outside air filter opening 17 is inclined so as to approach the right side plate 1f from the upper side to the lower side.
  • the outside air filter lid 20 can be opened and closed by attaching and detaching.
  • the outside air filter lid 20 covers the outside air filter opening 17 when it is closed.
  • Below the opening 17 for the outside air filter in the front plate 1c an operation unit 14 for operating the operation start, stop, etc. of the heat exchange type ventilation device 100 is provided below the opening 17 for the outside air filter in the front plate 1c.
  • the operation unit 14 is arranged near the lower right corner of the front plate 1c.
  • the exhaust filter opening 18 is an opening for mounting the exhaust filter 6 inside the housing 1 and taking out the exhaust filter 6 outside the housing 1.
  • the exhaust filter opening 18 is arranged to the left of the center of the front plate 1c in the left-right direction, and is provided at the same height as the outside air filter opening 17.
  • the shape of the exhaust filter opening 18 seen from the front is rectangular.
  • the exhaust filter opening 18 is inclined so as to approach the left side plate 1e from the upper side to the lower side.
  • the exhaust filter lid 21 can be opened and closed by attaching and detaching. The exhaust filter lid 21 covers the exhaust filter opening 18 when closed.
  • the air supply filter opening 19 is an opening for attaching the air supply filter 7 inside the housing 1 and taking out the air supply filter 7 outside the housing 1.
  • the air supply filter opening 19 is arranged to the left of the center of the front plate 1c in the left-right direction, and is arranged below the exhaust filter opening 18.
  • the shape of the air supply filter opening 19 seen from the front is rectangular.
  • the air supply filter opening 19 is inclined so as to approach the right side plate 1f from the upper side to the lower side.
  • the air supply filter lid 22 can be opened and closed by attaching and detaching.
  • the air supply filter lid 22 covers the air supply filter opening 19 when it is closed.
  • FIG. 8 is a rear view of the heat exchange type ventilator 100 according to the first embodiment.
  • the normal of the back plate 1d faces backward.
  • the back plate 1d connects the rear ends of the top plate 1a and the bottom plate 1b to each other.
  • the rear view shape of the back plate 1d is rectangular.
  • FIG. 9 is a right side view of the heat exchange type ventilator 100 according to the first embodiment.
  • the normal of the right plate 1f faces to the right.
  • the right side plate 1f connects the right end portions of the top plate 1a and the bottom plate 1b to each other.
  • the side view shape of the right side plate 1f is rectangular.
  • the normal of the left side plate 1e shown in FIG. 8 faces to the left.
  • the left side plate 1e connects the left end portions of the top plate 1a and the bottom plate 1b to each other.
  • the side view shape of the left side plate 1e is rectangular.
  • FIG. 10 is a cross-sectional view taken along the line XX shown in FIG.
  • the solid arrow X shown in FIG. 10 indicates the flow of air from the outside to the inside of the room, that is, the flow of air supply.
  • the dashed arrow Y shown in FIG. 10 indicates the flow of air from the room to the outside, that is, the flow of exhaust gas.
  • the outdoor suction port 8 and the indoor air outlet 10 are not shown in cross section.
  • an air supply air passage 23 for supplying air from the outside to the room and an exhaust air passage 24 for exhausting the air from the room to the outside are formed inside the housing 1, an air supply air passage 23 for supplying air from the outside to the room and an exhaust air passage 24 for exhausting the air from the room to the outside are formed.
  • the air supply air passage 23 is an air passage that takes in outdoor air from the outdoor suction port 8 into the housing 1 and supplies air from the indoor air outlet 10 toward the room.
  • the exhaust air passage 24 is an air passage that takes in indoor air from the indoor side suction port 9 into the housing 1 and exhausts it from the outdoor air outlet 11 toward the outside.
  • the upstream and downstream are based on the flow direction of the air flowing through the air supply air passage 23 or the exhaust air passage 24.
  • an outside air filter 5, a heat exchange element 2, an air supply filter 7, and an air supply blower 3 are arranged in this order from the upstream side.
  • a part of the air supply air passage 23 is formed of the heat insulating component 25 shown in FIG. 1 in order to suppress the occurrence of dew condensation.
  • an exhaust filter 6, a heat exchange element 2, and an exhaust blower 4 are arranged in order from the upstream side.
  • a part of the exhaust air passage 24 is formed of the heat insulating component 25 shown in FIG. 1 in order to suppress the occurrence of dew condensation.
  • the heat exchange element 2 is a member that exchanges heat between the outdoor air flowing in the air supply air passage 23 and the indoor air flowing in the exhaust air passage 24.
  • the heat exchange element 2 is installed between the top plate 1a and the pedestal 12a in the housing 1.
  • a space 29 for accommodating the control board 15 is formed between the pedestal 12a and the bottom plate 1b.
  • the heat exchange element 2 is arranged at the center of the housing 1 in the left-right direction. In the present embodiment, the heat exchange element 2 is installed in a horizontal state with respect to the front-rear direction and in a state of being tilted with respect to the left-right direction. Good.
  • FIG. 11 is a perspective view showing the heat exchange element 2 of the heat exchange type ventilation device 100 according to the first embodiment.
  • the shape of the heat exchange element 2 is not particularly limited as long as it is a polygonal column, but in the present embodiment, it is a hexagonal column.
  • the heat exchange element 2 includes a plurality of partition members 2a arranged at intervals from each other, and a plurality of interval holding members 2b for maintaining a distance between the partition members 2a.
  • the partition member 2a is formed in a flat processed sheet shape.
  • the partition member 2a and the interval holding member 2b are alternately laminated.
  • An air passage is formed between adjacent partition members 2a.
  • the heat exchange element 2 is provided with alternating air passages through which air from the outside flows and air passages through which air from the inside flows.
  • the heat exchange element 2 is a counter-flow type heat exchange element in which the air flow direction from the outside and the air flow direction from the room are different by 180 degrees, but the heat exchange element 2 is different from the air flow direction from the outside.
  • Orthogonal heat exchange elements whose air flow directions from the room are orthogonal to each other may be used.
  • the stacking direction which is the direction in which the partition member 2a and the spacing member 2b are laminated, coincides with the front-rear direction in the present embodiment, and is the direction perpendicular to the front plate 1c and the back plate 1d.
  • the stacking direction may be a direction that coincides with the vertical direction and is perpendicular to the top plate 1a and the bottom plate 1b, or may be a direction that coincides with the horizontal direction and is perpendicular to the left plate 1e and the right plate 1f.
  • the heat exchange element 2 may be configured to be capable of both sensible heat exchange and latent heat exchange, or to be configured to be capable of either sensible heat exchange or latent heat exchange. May be good.
  • the air supply blower 3 is a blower arranged in the air supply air passage 23.
  • the air supply blower 3 takes in air into the air supply air passage 23 from the outdoor suction port 8 and blows the air into the room from the indoor air outlet 10.
  • the air supply blower 3 is arranged on the downstream side of the heat exchange element 2, the outside air filter 5, and the air supply filter 7.
  • the exhaust blower 4 is a blower arranged in the exhaust air passage 24.
  • the exhaust blower 4 takes in air into the exhaust air passage 24 from the indoor side suction port 9, and blows the air from the outdoor air outlet 11 toward the outside.
  • the exhaust blower 4 is arranged on the downstream side of the exhaust filter 6 and the heat exchange element 2.
  • the outside air filter 5 is a member that is arranged in the air supply air passage 23 and collects dust contained in the air from the outside.
  • the outside air filter 5 is arranged on the downstream side of the outdoor suction port 8 and on the upstream side of the heat exchange element 2.
  • the outside air filter 5 is arranged at the inlet of the outdoor air in the heat exchange element 2. By collecting the dust with the outside air filter 5, clogging of the heat exchange element 2 due to the adhesion of the dust can be suppressed.
  • the outside air filter 5 is arranged to the right of the center of the housing 1 in the left-right direction.
  • the air supply filter 7 is a member that is arranged in the air supply air passage 23 and collects dust contained in the air from the outside.
  • the air supply filter 7 is arranged on the downstream side of the heat exchange element 2 and on the upstream side of the indoor air outlet 10.
  • the air supply filter 7 is arranged at the outlet of the outdoor air in the heat exchange element 2.
  • the exhaust filter 6 is a member that is arranged in the exhaust air passage 24 and collects dust contained in the air from the room.
  • the exhaust filter 6 is arranged on the downstream side of the indoor suction port 9 and on the upstream side of the heat exchange element 2.
  • the exhaust filter 6 is arranged at the inlet of the indoor air in the heat exchange element 2.
  • the exhaust filter 6 is arranged to the left of the center of the housing 1 in the left-right direction.
  • the drain pan 12 is a member that is arranged below the heat exchange element 2 and collects the drain water generated by the heat exchange element 2.
  • the drain pan 12 is arranged on the bottom plate 1b.
  • the drain port 13 is a member that discharges the drain water stored in the drain pan 12 to the outside of the housing 1.
  • the drain port 13 is formed in a cylindrical shape extending in the vertical direction.
  • the drain port 13 penetrates the bottom plate 1b and the drain pan 12.
  • the lower end of the drain port 13 projects downward from the bottom plate 1b.
  • the upper end of the drain port 13 is provided at the same height as the bottom surface of the drain pan 12.
  • the drain port 13 is integrally formed with the drain pan 12.
  • the control board 15 is arranged in the space 29 below the heat exchange element 2.
  • the control board 15 is electrically connected to the operation unit 14 shown in FIG. 1 with a cable (not shown).
  • the control board 15 has a first board 15a and a second board 15b.
  • the first substrate 15a is a substrate connected to a power source (not shown).
  • the first substrate 15a is housed in a box-shaped first substrate case 15c that opens downward.
  • the second substrate 15b is a substrate having a connection unit, a control setting unit, and the like to which a sensor (not shown) is connected.
  • the sensor connected to the second substrate 15b is, for example, a humidity sensor or a CO 2 sensor.
  • the second substrate 15b is attached to the second substrate case 15d.
  • the substrate lid 15f is a lid that closes an opening for taking out the second substrate 15b to the outside of the housing 1.
  • FIG. 12 is a schematic view showing a schematic configuration of a bypass air passage provided in the heat exchange type ventilation device according to the first embodiment, and is a diagram showing a state in which the inlet of the bypass air passage is closed.
  • FIG. 13 is a schematic view showing a schematic configuration of a bypass air passage provided in the heat exchange type ventilation device according to the first embodiment, and is a diagram showing a state in which the inlet of the bypass air passage is open.
  • FIG. 14 is a cross-sectional view taken along the line XIV-XIV shown in FIG. 9, showing a state in which the inlet of the bypass air passage is blocked.
  • FIG. 15 is a cross-sectional view taken along the line XIV-XIV shown in FIG. 9, which shows a state in which the inlet of the bypass air passage is opened.
  • the bypass air passage 32 is an air passage connecting the upstream opening 33 and the downstream opening 34 formed in the exhaust air passage 24.
  • the upstream opening 33 is an opening formed upstream of the heat exchange element 2 in the exhaust air passage 24, and serves as an inlet of the bypass air passage 32.
  • the downstream opening 34 is an opening formed downstream of the heat exchange element 2 in the exhaust air passage 24, and serves as an outlet of the bypass air passage 32.
  • a damper 35 is provided in the upstream opening 33.
  • the damper 35 includes a plate portion 35a and a shaft portion 35b.
  • the plate portion 35a and the shaft portion 35b are integrally formed.
  • the damper 35 is rotatably supported around the shaft portion 35b. By rotating the plate portion 35a around the shaft portion 35b, the plate portion 35a can be moved to a position where the upstream opening 33 is closed as shown in FIG. 12 and a position where the upstream opening 33 is opened as shown in FIG. ..
  • the upstream opening 33 and the damper 35 are provided in the upper left portion inside the housing 1 in the front view, and the bypass air passage 32 is viewed from the front so as to bypass the heat exchange element 2. Is provided in the housing 1 so as to pass to the left and below.
  • the upstream opening 33 is formed on the first wall surface 24a of the wall surfaces constituting the exhaust air passage 24.
  • FIG. 16 is a perspective view of the damper unit according to the first embodiment.
  • FIG. 17 is an exploded perspective view of the damper unit according to the first embodiment.
  • the damper unit 36 includes the above-mentioned damper 35 and a drive unit 37 that rotationally drives the damper 35.
  • FIG. 18 is a view of the damper in the first embodiment along the arrow P shown in FIG.
  • the damper 35 includes a plate portion 35a and a shaft portion 35b.
  • the plate portion 35a is a plate-shaped member formed in a size that closes the upstream opening 33.
  • the position of the upstream opening 33 in a state where the plate portion 35a closes the upstream opening 33 is indicated by a broken line so that the positional relationship between the plate portion 35a and the upstream opening 33 becomes clear. ..
  • the shaft portion 35b is a rod-shaped member integrally formed with the plate portion 35a.
  • the shaft portion 35b is rotatably supported around the rotating shaft 38 by the drive unit 37.
  • one end of the shaft portion 35b will be referred to as one end 39, and the other end will be referred to as the other end 40.
  • One end 39 of the shaft portion 35b is an oblique cut surface, and the cut surface is an inclined surface inclined with respect to a surface perpendicular to the rotation shaft 38. More specifically, the surface is closer to the other end 40 as the distance from the plate portion 35a is increased in the direction perpendicular to the rotation axis 38.
  • the drive unit 37 includes a wall surface forming portion 41, a motor portion 42, a cap 47, and a cover 43.
  • the wall surface component 41 forms a part of the wall surface of the exhaust air passage 24 when the damper unit 36 is attached to the exhaust air passage 24.
  • FIG. 19 is a view of the wall surface component according to the first embodiment as viewed along the arrow P shown in FIG.
  • FIG. 20 is a view of the damper, the wall surface component, and the cap according to the first embodiment as seen along the arrow P shown in FIG.
  • the surface facing the exhaust air passage 24 side is the second wall surface 41a.
  • the first wall surface 24a and the second wall surface 41a described above form different surfaces in the exhaust air passage 24, and the first wall surface 24a and the second wall surface 41a are not parallel surfaces.
  • the wall surface forming portion 41 is formed with an extending portion 44 extending from the second wall surface 41a.
  • the upper surface of the extending portion 44 is an arc surface that supports the shaft portion 35b.
  • the extension portion 44 is formed with a tubular portion 45 at a position away from the second wall surface 41a.
  • the tubular portion 45 is formed in a single tubular shape without a break. When a plurality of members are combined to form a tubular shape, the inner diameter of the tubular shape may fluctuate due to rattling between the members. On the other hand, since the tubular portion 45 has a continuous tubular shape and does not cause rattling, the inner diameter of the tubular portion 45 does not fluctuate.
  • the end portion of the wall surface forming portion 41 on the second wall surface 41a side is formed so as to approach the second wall surface 41a as it approaches the extending portion.
  • FIG. 21 is a perspective view of the wall surface component according to the first embodiment as viewed from the back side of the second wall surface.
  • the back surface 41b which is the back side of the second wall surface 41a of the wall surface constituent portion 41, has an inner convex portion 48 protruding from the periphery of the through hole 46 and a protrusion from the periphery of the inner convex portion 48.
  • An outer convex portion 49 is formed.
  • a gap is provided between the inner convex portion 48 and the outer convex portion 49.
  • the inner convex portion 48 and the outer convex portion 49 are formed in a circular shape when viewed along the penetrating direction of the through hole 46.
  • the penetration direction of the through hole 46 is parallel to the rotation shaft 38 of the shaft portion 35b of the damper 35.
  • FIG. 22 is a perspective view of the wall surface component according to the first embodiment as viewed from the back side of the second wall surface, and is a view showing a state in which the cap is inserted into the through hole.
  • the cap 47 is inserted from the back surface 41b into the through hole 46 formed in the wall surface forming portion 41.
  • the cap 47 has a function of preventing moisture contained in the air flowing through the exhaust air passage 24 from entering the motor portion 42 side through the through hole 46.
  • FIG. 23 is a partially enlarged cross-sectional view of the portion where the cap is inserted into the through hole in the first embodiment.
  • the cap 47 has a connecting portion 52 that is inserted into the through hole 46, projects from the through hole 46 toward the exhaust air passage 24 side, and is connected to the other end 40 of the shaft portion 35b of the damper 35. By being connected to the connecting portion 52, the other end 40 of the shaft portion 35b is supported by the cap 47.
  • the cap 47 is formed with a collar portion 50 that covers the gap between the inner convex portion 48 and the outer convex portion 49.
  • the flange portion 50 of the cap 47 is formed with a cap-side convex portion 51 that protrudes toward the back surface 41b of the wall surface constituent portion 41 and is inserted into the gap between the inner convex portion 48 and the outer convex portion 49.
  • the cap-side convex portion 51 has a circular shape when viewed along the penetrating direction of the through hole 46.
  • a groove 53 is formed between the cap-side convex portion 51 and the connecting portion 52.
  • the height h1 of the inner convex portion 48, the height h2 of the outer convex portion 49, the height h3 of the cap side convex portion 51, and the depth d1 of the groove 53 are such that the outer convex portion 49 and the flange portion 50 are in contact with each other.
  • the tip of the convex portion 51 on the cap side does not come into contact with the back surface 41b.
  • the tip of the inner convex portion 48 enters the groove 53 and does not come into contact with the bottom surface of the groove 53.
  • the tip of the cap side convex portion 51 is on the back surface in a state where the outer convex portion 49 and the flange portion 50 are in contact with each other. It is designed so that it does not come into contact with 41b.
  • the tip of the convex portion 48 enters the groove 53 and does not come into contact with the bottom surface of the groove 53.
  • the groove 53 is filled with grease (not shown).
  • grease By filling the groove 53 with grease, it is possible to prevent the air passing through the exhaust air passage 24 through the through hole 46 from entering the motor portion 42 side. As a result, it is possible to prevent moisture contained in the air passing through the exhaust air passage 24 from entering the motor unit 42 side. Therefore, it is possible to prevent the drive unit 37 from being damaged by humidity. Further, since the outer convex portion 49 comes into contact with the flange portion 50, it is possible to prevent the inner convex portion 48 from entering the groove 53 too deeply and overflowing the grease from the groove 53.
  • FIG. 24 is a partially enlarged cross-sectional view of the portion where the cap is inserted into the through hole in the first embodiment, and is a diagram showing the cap and the wall constituent portion according to the modified example.
  • the height h1 of the inner convex portion 48 ⁇ the height h2 of the outer convex portion 49, but the height h3 of the cap side convex portion 51 is higher than the example shown in FIG. 23.
  • the inner convex portion 48 is sufficiently inserted into the groove 53. Even with such a configuration, since the outer convex portion 49 comes into contact with the flange portion 50, it is possible to prevent the inner convex portion 48 from entering the groove 53 too deeply and overflowing the grease from the groove 53.
  • the inner convex portion 48 is sufficiently penetrated into the groove 53 to prevent the intrusion of moisture, and the inner convex portion 48 is prevented from entering the groove 53 too much and overflowing with grease to deteriorate the function of preventing the invasion of moisture. be able to.
  • the motor unit 42 has an electric motor 54.
  • a cap 47 is connected to the output shaft 54a of the electric motor 54.
  • the motor portion 42 is covered by the cover 43 and the wall surface constituent portion 41. By being covered with the cover 43, it is possible to prevent moisture from entering the motor portion 42 side from a place other than the exhaust air passage 24.
  • FIG. 25 is a diagram illustrating a method of attaching the damper to the wall surface component according to the first embodiment.
  • one end 39 of the shaft portion 35b is inserted into the inside of the tubular portion 45, and then the other end 40 of the shaft portion 35b is inserted into the extending portion 44.
  • the entire shaft portion 35b is supported by the extending portion 44.
  • the cap 47 is inserted into the through hole 46, and the connecting portion 52 of the cap 47 and the other end 40 of the shaft portion 35b are connected to rotatably support the damper 35.
  • the shaft portion 35b does not fall off from the extending portion 44.
  • the tubular portion 45 that supports one end 39 of the shaft portion 35b is integrally formed with the wall surface forming portion 41 via the extending portion 44. Therefore, since the tubular portion 45, which is a member that supports one end 39, and the wall surface constituent portion 41 that supports the other end 40 are integrally formed, the number of parts can be reduced. As a result, the assemblability of the heat exchange type ventilator 100 can be improved and the manufacturing cost can be suppressed.
  • FIG. 26 is a diagram illustrating a method of attaching the damper to the wall surface component according to the comparative example.
  • one end 139 of the shaft portion 135b is not an inclined surface. Therefore, when the one end 139 is inserted, the protruding portion 139a protruding from the one end 39 of the shaft portion 35b comes into contact with the extending portion 44. Therefore, in the damper 135, one end 139 of the shaft portion 135b cannot be inserted into the cylinder portion 45 as compared with the damper 35.
  • the shaft portion 135b and the plate portion 135a are formed with the same length and size as the damper 35, the other end 140 of the shaft portion 135b and the plate portion 135a interfere with the second wall surface 41a. Therefore, unless the shaft portion 135b is made shorter than the shaft portion 35b and the plate portion 135a is made smaller than the plate portion 35a, the other end 140 of the shaft portion 135b is brought closer to the extending portion 44 to extend the shaft portion 135b. It cannot be supported by the part 44.
  • FIG. 27 is a diagram showing an example in which the plate portion is made smaller. If the plate portion 135a becomes smaller, the plate portion 135a is separated from the second wall surface 41a by that amount, and the upstream opening 33 blocked by the plate portion 135a must also be reduced accordingly. If the upstream opening 33 becomes smaller, the resistance of the flow path increases. When the resistance of the flow path increases, it is necessary to increase the capacity of the exhaust blower 4 or increase the size of the housing 1 in order to secure the air volume. On the other hand, in the first embodiment, since the plate portion 35a can be made larger than that of the comparative example, the upstream opening 33 can be made larger and the increase in the resistance of the flow path can be suppressed. This effect is also contributed to the fact that the end portion of the tubular portion 45 on the second wall surface 41a side has a shape closer to the first wall surface 41a as it approaches the extending portion 44.
  • bypass air passage 32 may be provided in the air supply air passage 23, or the exhaust air passage 24 and the air supply air passage 23 may be provided. Bypass air passages 32 may be provided in both. Further, the arrangement of the outdoor side suction port 8, the indoor side suction port 9, the indoor side air outlet 10, and the outdoor side air outlet 11 formed on the top plate 1a of the housing 1 is not limited to the illustrated arrangement.
  • the first embodiment exemplifies a wall-mounted heat exchange type ventilation device that is hung on the wall surface 30 and installed, but the present invention is not limited to this, and any ventilation device that switches the air passage by a damper is used.
  • the damper unit described in the first embodiment can be applied.
  • the configuration shown in the above-described embodiment shows an example of the content of the present invention, can be combined with another known technique, and is one of the configurations without departing from the gist of the present invention. It is also possible to omit or change the part.

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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)
PCT/JP2019/044397 2019-11-12 2019-11-12 熱交換型換気装置 Ceased WO2021095130A1 (ja)

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PCT/JP2019/044397 WO2021095130A1 (ja) 2019-11-12 2019-11-12 熱交換型換気装置

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Cited By (1)

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JP2023064783A (ja) * 2021-10-27 2023-05-12 三菱電機株式会社 熱交換換気装置

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WO2011155069A1 (ja) * 2010-06-11 2011-12-15 三菱電機株式会社 換気空調装置及びその制御方法
JP2014092291A (ja) * 2012-10-31 2014-05-19 Max Co Ltd 換気装置

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JP3861706B2 (ja) * 2002-02-07 2006-12-20 三菱電機株式会社 回転軸構造及び空調換気装置
KR20180051138A (ko) * 2016-11-08 2018-05-16 엘지전자 주식회사 전열교환기
KR102509332B1 (ko) * 2016-11-08 2023-03-14 엘지전자 주식회사 전열교환기
WO2019234874A1 (ja) * 2018-06-06 2019-12-12 三菱電機株式会社 熱交換換気装置
KR102089784B1 (ko) * 2019-09-19 2020-03-17 양세연 열회수 공기순환용 환기유니트의 댐퍼구조체

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WO2011155069A1 (ja) * 2010-06-11 2011-12-15 三菱電機株式会社 換気空調装置及びその制御方法
JP2014092291A (ja) * 2012-10-31 2014-05-19 Max Co Ltd 換気装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023064783A (ja) * 2021-10-27 2023-05-12 三菱電機株式会社 熱交換換気装置
JP7507736B2 (ja) 2021-10-27 2024-06-28 三菱電機株式会社 熱交換換気装置

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