WO2019142462A1 - Climatiseur encastré dans le plafond - Google Patents

Climatiseur encastré dans le plafond Download PDF

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Publication number
WO2019142462A1
WO2019142462A1 PCT/JP2018/041450 JP2018041450W WO2019142462A1 WO 2019142462 A1 WO2019142462 A1 WO 2019142462A1 JP 2018041450 W JP2018041450 W JP 2018041450W WO 2019142462 A1 WO2019142462 A1 WO 2019142462A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
drain
drain pan
water
air conditioner
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/JP2018/041450
Other languages
English (en)
Japanese (ja)
Inventor
昌和 伊藤
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 Heavy Industries Thermal Systems Ltd
Original Assignee
Mitsubishi Heavy Industries Thermal Systems Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=67302113&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2019142462(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mitsubishi Heavy Industries Thermal Systems Ltd filed Critical Mitsubishi Heavy Industries Thermal Systems Ltd
Publication of WO2019142462A1 publication Critical patent/WO2019142462A1/fr
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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/32—Supports for air-conditioning, air-humidification or ventilation units

Definitions

  • the present invention relates to a ceiling-embedded air conditioner.
  • Patent Document 1 discloses that in order to form a drain groove for receiving drain water in a drain pan, two side walls are provided so as to face each of the outlet side and the inlet side of the heat exchanger.
  • the drain piping in the ceiling is vertically raised outside the indoor unit and installed so as to have a gentle downward slope from the highest position.
  • drain water is drained from the drain pan to the outside through the drain pipe.
  • the operation of the air conditioner is stopped and the pump is stopped, the water flowing through the rising portion of the drain pipe flows back, and the water is accumulated again in the drain pan. Therefore, water remains in the drain pan until the air conditioner resumes operation, which may cause the heat exchanger to rust.
  • This invention is made in view of such a situation, Comprising:
  • the ceiling-embedded air conditioner which can suppress generation
  • the purpose is to
  • a ceiling-embedded air conditioner includes a heat exchanger, a drain pan for receiving drain water dropped from the heat exchanger, and a pump for draining water accumulated in the drain pan through a drain pipe.
  • a convex portion protruding upward on which the heat exchanger is placed on the upper surface is formed at the bottom of the drain pan, and the amount of water that can be stored in the drain pan below the upper surface of the convex portion is And larger than the internal volume of the rising portion of the drain pipe.
  • the convex part which protruded upwards is formed in the bottom part of a drain pan, and a heat exchanger is mounted in the upper surface of a convex part.
  • the amount of water that can be accommodated in the drain pan below the upper surface of the convex portion is larger than the internal volume of the rising portion of the drain pipe. That is, the height of the upper surface of the convex portion is higher than the water level of the water flowing back from the rising portion of the drain pipe and collecting in the drain groove. Therefore, even if the pump is stopped and the water flowing through the rising portion of the drain pipe flows back, the water accumulated in the drain pan does not exceed the upper surface of the convex portion, and the water contacts the heat exchanger. There is no
  • the drain pan may be formed with a concave drain groove in which the lower portion of the heat exchanger is accommodated.
  • a concave drain groove is formed in the drain pan, and the drain water is collected inside the drain groove.
  • the lower portion of the heat exchanger is accommodated in the drain groove, and the height position of the lower end of the heat exchanger is lower than the upper end of the drain groove.
  • the bottom of the drain pan may be formed at a position lower than the heat exchanger on the outer side than the inner side.
  • the water accumulated in the drain pan can be easily led to the heat exchanger from the inside to the outside.
  • the blower is disposed inside the heat exchanger, and the flow of wind from the blower is directed from the inside to the outside of the heat exchanger, so The accumulated drain water is also easily drained from the inside to the outside of the heat exchanger by the wind power.
  • an insulation may be installed between the lower portion of the heat exchanger and the upper surface of the convex portion.
  • the space between the heat exchanger and the projection is closed by insulation.
  • the air flowing from the inside to the outside of the heat exchanger through the gap without passing through the heat exchanger can be reduced.
  • the insulation is disposed between the lower portion of the heat exchanger and the upper surface of the convex portion, the insulation is accommodated in the drain groove. Therefore, scattering of the drain water adhering to the insulation to the outside is also prevented.
  • the ceiling-embedded air conditioner (hereinafter referred to as "air conditioner”) is a refrigerant pipe (not shown) that connects the indoor unit 1, the outdoor unit (not shown), and the indoor unit 1 and the outdoor unit. Etc.
  • the indoor unit 1 is installed with the case body 2 embedded in the ceiling.
  • a heat exchanger 7, a drain pan 10, a motor 5, a blower 6, a bell mouth 12 and the like are built in the inside of the case main body 2, and the lower part of the case main body 2 is exposed to the ceiling surface.
  • the ceiling panel 8 is attached.
  • FIG. 1 is a bottom view of the indoor unit 1 as viewed from the indoor side, that is, as viewed from the lower surface of the indoor unit 1
  • FIG. 2 is a longitudinal sectional view taken along line II-II in FIG.
  • the drain pan 10 is provided at the lower portion of the heat exchanger 7 and receives drain water dripping from the heat exchanger 7.
  • the bell mouth 12 is provided at the lower part of the drain pan 10.
  • a suction port 3 is formed at the center of the lower surface of the indoor unit 1, and a blowout port 4 is formed along the lower surface outer peripheral portion of the indoor unit 1 adjacent to the suction port 3.
  • a suction grille 11 and a filter 13 above the suction grille 11 are installed in the suction port 3.
  • the refrigerant from the outdoor unit circulates through the heat exchanger 7, and the fan 6 is driven by the motor 5.
  • the blower 6 is driven, room air passes from the suction port 3 through the suction grille 11 and the filter 13 and is guided by the bell mouth 12 and sucked into the blower 6. Then, the sucked air passes through the heat exchanger 7 to be cooled or heated, and then blown out from the outlet 4 into the room.
  • FIG. 3 is a longitudinal sectional view in which the case body 2 of the indoor unit 1 is cut so that the position of the pump 14 can be seen, and FIG. 4 is a side view showing the indoor unit 1.
  • the drain pan 10 is made of, for example, expanded polystyrene, and a waterproof paint is applied to the surface on which the drain water is stored.
  • the plan view shape of the drain pan 10 is substantially square.
  • openings 16 and 17 are formed corresponding to the suction port 3 and the blowout port 4, respectively.
  • the bottom portion 10 a of the drain pan 10 is provided along the lower portion of the heat exchanger 7 disposed so as to surround the blower 6 over the entire area where the heat exchanger 7 is installed.
  • FIG. 5 is a plan view showing the drain pan 10.
  • the bottom portion 10a of the drain pan 10 is formed to be inclined such that the installation position of the pump 14 is the lowest, as shown in FIG.
  • the bottom portion 10a corresponding to the installation position of the pump 14 is formed in a concave shape deeper than the surrounding area so that the pump 14 can easily suck up drain water.
  • the drain pan 10 is formed with a concave drain groove 18, and drain water is collected inside the drain groove 18.
  • the drain groove 18 is, as shown in FIGS. 2 and 5, an inner peripheral wall portion 18 a formed on the inner side with respect to the heat exchanger 7, that is, on the inlet side of the heat exchanger 7 and the heat exchanger 7. It has an outer peripheral wall 18 b formed on the outer side, that is, on the outlet side of the heat exchanger 7.
  • the inner circumferential wall portion 18 a is provided along an opening 16 formed corresponding to the suction port 3.
  • the outer peripheral wall 18 b is provided along an opening 17 formed corresponding to the outlet 4.
  • the lower portion of the heat exchanger 7 is accommodated in the drain groove 18, and the height position of the lower end of the heat exchanger 7 is lower than the upper end of the drain groove 18.
  • the outer peripheral wall 18b of the drain groove 18 prevents the drain water attached to the lower portion of the heat exchanger 7 from being scattered outside.
  • a convex portion 19 protruding upward is formed on the bottom portion 10 a of the drain pan 10.
  • the heat exchanger 7 is mounted on the upper surface of the convex portion 19.
  • the convex portion 19 is formed along the bottom surface of the heat exchanger 7 so as to correspond to the shape of the bottom surface of the heat exchanger 7 so that a gap with the heat exchanger 7 is not formed as much as possible.
  • the amount of water that can be accommodated in the drain pan 10 below the upper surface of the convex portion 19 is larger than the internal volume of the rising portions 15 a, 15 b, 15 c of the drain pipe 15. That is, the height of the upper surface of the convex portion 19 is higher than the water level of the water that flows back from the rising portions 15 a, 15 b and 15 c of the drain pipe 15 and accumulates in the drain pan 10. Therefore, even if the pump 14 is stopped and the water flowing through the rising portions 15a, 15b, 15c of the drain pipe 15 flows back, the water accumulated again in the drain pan 10 does not exceed the upper surface of the convex portion 19, Water does not come in contact with the heat exchanger 7.
  • the water accumulated in the drain pan 10 when the pump 14 is stopped is less likely to cause rusting on the surface of the heat exchanger 7.
  • the time during which the operation is stopped is short.
  • the frequency of the cooling operation decreases, the time for which the drain water is accumulated becomes relatively long, and thus the possibility of rusting of the heat exchanger 7 becomes high.
  • the bottom portion 10 a is desirably formed at a position lower than the bottom portion 10 a outside the heat exchanger 7 than the bottom portion 10 a inside.
  • the water accumulated in the drain pan 10 can be easily led to the heat exchanger 7 from the inside to the outside.
  • the blower 6 is disposed on the inner side with respect to the heat exchanger 7, and the flow of the wind by the blower 6 is accumulated in the drain pan 10 because it flows from the inside to the outside with respect to the heat exchanger 7.
  • the drain water also tends to be discharged from the inside to the outside of the heat exchanger 7 by the wind power.
  • the insulation 20 is disposed between the lower portion of the heat exchanger 7 and the upper surface of the convex portion 19. As a result, since the space between the heat exchanger 7 and the convex portion 19 is blocked by the insulation 20, air flowing from the inside to the outside of the heat exchanger 7 through the gap without passing through the heat exchanger 7 is reduced. it can. Further, since the insulation 20 is disposed between the lower portion of the heat exchanger 7 and the upper surface of the convex portion 19, the insulation 20 is accommodated in the drain groove 18. Therefore, the drain water dropped from the heat exchanger 7 and attached to the insulation 20 is also prevented from scattering to the outside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

L'objectif de la présente invention est de supprimer la rouille d'un échangeur de chaleur provoquée par la récupération d'eau dans un bac de vidange lorsqu'une pompe est arrêtée. Ce climatiseur encastré dans le plafond est pourvu d'un échangeur de chaleur (7), d'un bac de vidange (10) qui reçoit l'eau de vidange qui s'égoutte de l'échangeur de chaleur (7), et d'une pompe (14) qui évacue l'eau récupérée dans le bac de vidange (10) par l'intermédiaire d'une tuyauterie de vidange (15). Une saillie (19) sur laquelle l'échangeur de chaleur (7) est montée sur une surface supérieure et qui fait saillie vers le haut est formée sur une partie inférieure (10a) du bac de vidange (10). Une quantité d'eau qui peut être reçue dans le bac de vidange (10) en dessous de la surface supérieure de la saillie (19) est supérieure au volume interne de parties verticales (15a, 15b, 15c) de la tuyauterie de vidange (15).
PCT/JP2018/041450 2018-01-18 2018-11-08 Climatiseur encastré dans le plafond Ceased WO2019142462A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018006531A JP7086615B2 (ja) 2018-01-18 2018-01-18 天井埋込み型空気調和機
JP2018-006531 2018-01-18

Publications (1)

Publication Number Publication Date
WO2019142462A1 true WO2019142462A1 (fr) 2019-07-25

Family

ID=67302113

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/041450 Ceased WO2019142462A1 (fr) 2018-01-18 2018-11-08 Climatiseur encastré dans le plafond

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JP (1) JP7086615B2 (fr)
WO (1) WO2019142462A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024189715A1 (fr) * 2023-03-13 2024-09-19 三菱電機株式会社 Unité intérieure de climatiseur

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08312985A (ja) * 1995-05-23 1996-11-26 Toshiba Corp 空気調和機
JP2009204293A (ja) * 2008-01-29 2009-09-10 Sanyo Electric Co Ltd 空気調和装置
JP2014005976A (ja) * 2012-06-22 2014-01-16 Hitachi Appliances Inc 空気調和機の室内機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000046362A (ja) 1998-07-27 2000-02-18 Toshiba Ave Kk 天井カセット形空気調和機
JP5365575B2 (ja) 2010-04-27 2013-12-11 ダイキン工業株式会社 室内機
JP6488011B2 (ja) 2015-07-08 2019-03-20 日立ジョンソンコントロールズ空調株式会社 空気調和機の室内機
JP6650591B2 (ja) 2015-10-14 2020-02-19 パナソニックＩｐマネジメント株式会社 空気調和機の室内ユニット

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08312985A (ja) * 1995-05-23 1996-11-26 Toshiba Corp 空気調和機
JP2009204293A (ja) * 2008-01-29 2009-09-10 Sanyo Electric Co Ltd 空気調和装置
JP2014005976A (ja) * 2012-06-22 2014-01-16 Hitachi Appliances Inc 空気調和機の室内機

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JP7086615B2 (ja) 2022-06-20
JP2019124422A (ja) 2019-07-25

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