WO2022091279A1 - 天井埋込型空気調和機の室内機 - Google Patents

天井埋込型空気調和機の室内機 Download PDF

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Publication number
WO2022091279A1
WO2022091279A1 PCT/JP2020/040559 JP2020040559W WO2022091279A1 WO 2022091279 A1 WO2022091279 A1 WO 2022091279A1 JP 2020040559 W JP2020040559 W JP 2020040559W WO 2022091279 A1 WO2022091279 A1 WO 2022091279A1
Authority
WO
WIPO (PCT)
Prior art keywords
suction port
housing
ceiling
heat exchanger
indoor unit
Prior art date
Application number
PCT/JP2020/040559
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
裕樹 宇賀神
哲央 山下
幸治 山口
尚史 池田
惇司 河野
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/JP2020/040559 priority Critical patent/WO2022091279A1/ja
Priority to JP2022558838A priority patent/JPWO2022091450A1/ja
Priority to CN202180067338.7A priority patent/CN116261643A/zh
Priority to PCT/JP2021/013754 priority patent/WO2022091450A1/ja
Publication of WO2022091279A1 publication Critical patent/WO2022091279A1/ja

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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
    • 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

Definitions

  • This disclosure relates to an indoor unit of a ceiling-embedded air conditioner, and particularly to a drain pan structure.
  • the present disclosure has been made in order to solve the above problems, and is a ceiling-embedded air conditioner that suppresses an increase in air resistance while increasing the water retention capacity of the drain pan and reducing the size of the housing.
  • the purpose is to provide indoor units.
  • the indoor unit of the ceiling-embedded air conditioner has a suction port formed in the rear and an air outlet formed in the front when viewed from the front, and has a housing embedded in the ceiling and the suction port.
  • a suction port formed in the rear and an air outlet formed in the front when viewed from the front, and has a housing embedded in the ceiling and the suction port.
  • a heat exchanger for heat exchange and a drain pan which is arranged below the heat exchanger in the housing and collects drain water from the heat exchanger are provided, and a part of the drain pan is sucked.
  • the lower surface of the portion facing the suction port and facing the suction port is inclined so as to be away from the suction port.
  • a part of the drain pan faces the suction port, and the lower surface of the portion facing the suction port is inclined so as to be away from the suction port. are doing.
  • the drain pan is widened in order to increase the water retention amount of the drain pan, and the housing is downsized to be used as the suction port. Even if the drain pan is covered, it is possible to suppress an increase in air resistance.
  • FIG. 3 is a schematic cross-sectional view of the indoor unit of the ceiling-embedded air conditioner according to the first embodiment as viewed from the side.
  • FIG. 5 is a schematic cross-sectional view of an indoor unit of a ceiling-embedded air conditioner according to a first modification of the first embodiment as viewed from the side.
  • FIG. 3 is a schematic cross-sectional view of an indoor unit of a ceiling-embedded air conditioner according to a second modification of the first embodiment as viewed from the side. It is a rear view of the drain pan of the indoor unit of the ceiling-embedded air conditioner which concerns on the 2nd modification of Embodiment 1.
  • FIG. 5 is a schematic cross-sectional view of an indoor unit of a ceiling-embedded air conditioner according to a first modification of the first embodiment as viewed from the side.
  • FIG. 3 is a schematic cross-sectional view of an indoor unit of a ceiling-embedded air conditioner according to a second modification of the first embodiment as
  • FIG. 3 is a schematic cross-sectional view of the indoor unit of the ceiling-embedded air conditioner according to the second embodiment as viewed from the side.
  • FIG. 3 is a schematic cross-sectional view of an indoor unit of a ceiling-embedded air conditioner according to a first modification of the second embodiment as viewed from the side.
  • FIG. 1 is a schematic cross-sectional view of the indoor unit 100 of the ceiling-embedded air conditioner according to the first embodiment as viewed from the side.
  • the indoor unit 100 of the ceiling-embedded air conditioner is embedded in the ceiling and installed, and as shown in FIG. 1, has a box-shaped housing 1 embedded in the ceiling.
  • a suction port 5 for sucking indoor air is formed on the lower surface behind the housing 1, and an air outlet 8 for blowing conditioned air to the outside is formed on the lower surface in front of the housing 1.
  • the suction port 5 is provided with a flat plate-shaped suction grill 6 having an opening and serving as a design surface, and a filter 7 covering the opening of the suction grill 6. Therefore, the indoor air sucked from the suction port 5 passes through the opening of the suction grill 6 and the filter 7 and is taken into the inside of the housing 1.
  • the air outlet 8 is provided with an upper and lower vanes 9 that change the wind direction within a predetermined range in the vertical direction.
  • a blower fan 2 rotatably arranged to generate an air flow, a motor connected to the blower fan 2 and driven to rotate (not shown), and a state inclined with respect to a horizontal plane.
  • a heat exchanger 3 that is arranged and heat exchanges between the indoor air sucked into the inside of the housing 1 from the suction port 5 by the blower fan 2 and the refrigerant to create air-conditioned air, and is arranged below the heat exchanger 3.
  • a drain pan 4 for recovering the drain water from the heat exchanger 3 is provided.
  • an air passage 20 is formed inside the housing 1 so that air flows from the suction port 5 through the heat exchanger 3 to the air outlet 8, and the blower fan 2 and the heat exchanger 3 are provided with wind. It is arranged on the road 20.
  • the blower fan 2 connected to the motor rotates, sucks indoor air from the suction port 5, and the indoor air passes through the filter 7 and is sucked into the inside of the housing 1.
  • the indoor air sucked by the blower fan 2 is blown out toward the heat exchanger 3, heat is exchanged there when passing through the heat exchanger 3, becomes air-conditioned air, and is blown out toward the room from the outlet 8. ..
  • the direction of the conditioned air blown out from the outlet 8 changes depending on the direction of the upper and lower vanes 9.
  • the drain pan 4 has a rectangular shape in a plan view and includes a bottom surface 4a and ribs 4b.
  • the ribs 4b are provided at the longitudinal ends of the bottom surface 4a so as to extend upward. Further, the ribs 4b are each provided along the longitudinal direction (direction orthogonal to the paper surface in FIG. 1).
  • a drain pump (not shown) for sucking up the drain water stored in the drain pan 4
  • a float sensor (not shown) for detecting the water level of the drain water are installed.
  • the shape of the drain pan 4 does not have to be strictly rectangular in a plan view. Further, in the following, one short side of the drain pan 4 in which the drain pump is installed is referred to as a drain pump side, and the other short side of the drain pan 4 is referred to as an anti-drain pump side.
  • the drain pan 4 is arranged so that a part thereof covers the suction port 5 in the vertical direction. That is, a part of the drain pan 4 faces the suction port 5.
  • the lower surface 4c of the portion of the drain pan 4 facing the suction port 5 is inclined so as to move away from the suction port 5 toward the rear.
  • the drain pan 4 is widened in order to increase the water retention amount of the drain pan 4, and even if the housing 1 is miniaturized and the suction port 5 is covered with the drain pan 4, the increase in air resistance is suppressed. Can be done. Then, by suppressing the increase in air resistance, it is possible to suppress an increase in power consumption and a decrease in quietness.
  • the lower surface 4c of the portion of the drain pan 4 facing the suction port 5 is inclined, the lower surface 4c gradually moves away from the suction port 5, and the drain pan 4 is difficult to see from the suction port 5, so that the design is good. The decrease can also be suppressed.
  • FIG. 2 is a schematic cross-sectional view of the indoor unit 100 of the ceiling-embedded air conditioner according to the first modification of the first embodiment as viewed from the side.
  • the lower surface 4c of the portion of the drain pan 4 facing the suction port 5 is inclined so as to be away from the suction port 5. Further, in the drain pan 4, one of the two ribs 4b faces the suction port 5, and the rib 4b on the side facing the suction port 5 is on the opposite side to the bottom surface 4a, that is, is convex rearward. It has a curved arc shape.
  • the rib 4b on the side facing the suction port 5 has a shape having an arc shape curved so as to be convex rearward.
  • the lower surface 4c of the portion of the drain pan 4 facing the suction port 5 is inclined, the lower surface 4c gradually moves away from the suction port 5, and the drain pan 4 is difficult to see from the suction port 5, so that the design is good. The decrease can also be suppressed.
  • FIG. 3 is a schematic cross-sectional view of the indoor unit 100 of the ceiling-embedded air conditioner according to the second modification of the first embodiment as viewed from the side.
  • FIG. 4 is a rear view of the drain pan 4 of the indoor unit 100 of the ceiling-embedded air conditioner according to the second modification of the first embodiment.
  • FIG. 5 is a perspective view of the drain pan 4 of the indoor unit 100 of the ceiling-embedded air conditioner according to the second modification of the first embodiment.
  • the lower surface 4c of the portion of the drain pan 4 facing the suction port 5 is inclined so as to move away from the suction port 5 toward the rear.
  • one of the two ribs 4b faces the suction port 5, and as shown in FIGS. 4 and 5, the rib 4b on the side facing the suction port 5 faces the suction port 5 in the longitudinal direction. It has different heights along it, and is provided so that the upper surface is inclined. Specifically, the rib 4b on the side facing the suction port 5 is provided so that the height increases from the drain pump side of the drain pan 4 toward the anti-drain pump side.
  • the drain water may be unevenly collected on one short side of the drain pan 4. .
  • the drain pump is driven by the water level detection by a water level detecting means such as a float sensor, the water level detecting means needs to detect the water level in order to drive the drain pump, and a constant water level is required around the water level detecting means. Will be.
  • the indoor unit 100 of the ceiling-embedded air conditioner is installed tilted toward the drain pump side, the drain water is unevenly collected around the water level detecting means, and the drain pump is more than the anti-drain pump side of the drain pan 4.
  • the water level on the side becomes higher, and the drain pump is driven faster than when the indoor unit 100 of the ceiling-embedded air conditioner is installed horizontally. Therefore, even if the height of the rib 4b on the drain pump side is lower than that on the anti-drain pump side, the drain water does not overflow from the drain pan 4. Further, it is possible to suppress the air resistance by lowering the height of the rib 4b on the side facing the suction port 5 and increasing the gap between the heat exchanger 3 and the drain pan 4.
  • the air resistance is increased while suppressing the drain water from overflowing from the drain pan 4. It can be more suppressed. Then, by further suppressing the increase in air resistance, it is possible to further suppress the decrease in power consumption and quietness.
  • the indoor unit 100 of the ceiling-embedded air conditioner has a suction port 5 formed in the rear and an air outlet 8 formed in the front when viewed from the front, and is embedded in the ceiling.
  • the air blown fan 2 that blows out the air sucked into the inside of the housing 1 from the housing 1 and the suction port 5 from the air outlet 8 to the outside of the housing 1, and the air blower fan 2 sucks the air into the inside of the housing 1 from the suction port 5.
  • a heat exchanger 3 that exchanges heat between the air and the refrigerant, and a drain pan 4 that is arranged below the heat exchanger 3 in the housing 1 and collects drain water from the heat exchanger 3.
  • a part of the drain pan 4 faces the suction port 5, and the lower surface 4c of the portion facing the suction port 5 is inclined so as to be away from the suction port 5.
  • a part of the drain pan 4 faces the suction port 5, and the lower surface 4c of the portion facing the suction port 5 is It is tilted away from the suction port 5.
  • the lower surface 4c of the portion of the drain pan 4 facing the suction port 5 is inclined so as to be away from the suction port 5.
  • the drain pan 4 includes a rib 4b extending upward at the end of a portion facing the suction port 5.
  • the rib 4b has an arc shape curved so as to be convex rearward.
  • the rib 4b on the side facing the suction port 5 has an arc shape curved so as to be convex rearward. have.
  • the rib 4b on the side facing the suction port 5 has a shape having an arc shape curved so as to be convex rearward.
  • the drain pan 4 has a rectangular shape in a plan view, and the end portion of the portion facing the suction port 5.
  • the ribs 4b extend upwardly, and the ribs 4b have different heights along the longitudinal direction.
  • the ribs 4b provided at the end of the portion facing the suction port 5 are different along the longitudinal direction. Has a height.
  • the ribs 4b provided at the ends of the portions facing the suction port 5 have different heights along the longitudinal direction, so that the air can be suppressed from overflowing the drain water from the drain pan 4. It is possible to further suppress the increase in resistance. Then, by further suppressing the increase in air resistance, it is possible to further suppress the decrease in power consumption and quietness.
  • Embodiment 2 Hereinafter, the second embodiment will be described, but the description thereof will be omitted for those overlapping with the first embodiment, and the same parts or the corresponding parts as those in the first embodiment will be designated by the same reference numerals.
  • FIG. 6 is a schematic cross-sectional view of the indoor unit 100 of the ceiling-embedded air conditioner according to the second embodiment as viewed from the side.
  • the rear surface 10 and the top surface 12 constituting the air passage 21 from the suction port 5 to the heat exchanger 3 are formed inside the housing 1.
  • the air passage 21 is a portion of the air passage 20 between the suction port 5 and the heat exchanger 3.
  • the rear surface 10 is formed behind the heat exchanger 3, and the top surface 12 is formed above the heat exchanger 3. Further, the rear surface 10 is formed in a straight line inclined so as to approach the front as it goes upward from the peripheral edge portion 11a behind the suction port 5 toward the rear end portion 11b of the top surface 12.
  • the rear surface 10 inside the housing 1 is formed into a straight line that is inclined so as to approach the front from the peripheral edge portion 11a behind the suction port 5 toward the rear end portion 11b of the top surface 12. ..
  • the wasted space between the suction port 5 and the heat exchanger 3 can be reduced, and the circulation of air serving as resistance is reduced, so that air resistance can be suppressed. Then, by suppressing the air resistance, it is possible to suppress the power consumption and improve the quietness.
  • FIG. 7 is a schematic cross-sectional view of the indoor unit 100 of the ceiling-embedded air conditioner according to the first modification of the second embodiment as viewed from the side.
  • the rear surface 10 is convex rearward from the peripheral edge portion 11a behind the suction port 5 toward the rear end portion 11b of the top surface 12. It is formed in a curved arc shape.
  • the rear surface 10 inside the housing 1 is formed into an arc shape that is curved so as to be convex rearward from the peripheral edge portion 11a behind the suction port 5 toward the rear end portion 11b of the top surface 12.
  • the wasted space between the suction port 5 and the heat exchanger 3 can be reduced, and the circulation of air serving as resistance is reduced, so that air resistance can be suppressed.
  • the circulation of air that becomes a resistance is smaller than that of the above-mentioned linear shape, so that the air resistance can be further suppressed. Then, by further suppressing the air resistance, it is possible to further suppress the power consumption and further improve the quietness.
  • the housing 1 constitutes an air passage 21 from the suction port 5 to the heat exchanger 3, and is behind the heat exchanger 3.
  • the rear surface 10 is formed inside, and the rear surface 10 is formed in a straight line inclined so as to approach the front as it goes upward.
  • the rear surface 10 is formed in a straight line inclined so as to approach the front as it goes upward.
  • the rear surface 10 is formed in a linear shape that is inclined so as to approach the front as it goes upward, it is possible to reduce the wasted space between the suction port 5 and the heat exchanger 3, and the resistance can be reduced. Since the circulation of air is reduced, air resistance can be suppressed. Then, by suppressing the air resistance, it is possible to suppress the power consumption and improve the quietness.
  • the housing 1 constitutes an air passage 21 from the suction port 5 to the heat exchanger 3, and is above the heat exchanger 3.
  • the rear surface 10 is formed from the peripheral edge portion 11a behind the suction port 5 toward the rear end portion 11b of the top surface 12.
  • the rear surface 10 is formed from the peripheral edge portion 11a behind the suction port 5 toward the rear end portion 11b of the top surface 12. There is. Therefore, the wasted space between the suction port 5 and the heat exchanger 3 can be reduced more efficiently, and the circulation of air as a resistance is reduced, so that the air resistance can be further suppressed. Then, by further suppressing the air resistance, it is possible to further suppress the power consumption and further improve the quietness.
  • the housing 1 constitutes an air passage 21 from the suction port 5 to the heat exchanger 3 to exchange heat.
  • the rear surface 10 formed behind the vessel 3 is provided inside, and the rear surface 10 is formed in an arc shape curved so as to be convex rearward.
  • the rear surface 10 is formed in an arc shape curved so as to be convex rearward.
  • the rear surface 10 is formed in an arc shape curved so as to be convex rearward, it is possible to reduce the wasted space between the suction port 5 and the heat exchanger 3, and the air becomes a resistance. Since the circulation of air is reduced, air resistance can be suppressed. Further, by forming the rear surface 10 inside the housing 1 into the above-mentioned arc shape, the circulation of air that becomes a resistance is smaller than that of the above-mentioned linear shape, so that the air resistance can be further suppressed. Then, by further suppressing the air resistance, it is possible to further suppress the power consumption and further improve the quietness.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
PCT/JP2020/040559 2020-10-29 2020-10-29 天井埋込型空気調和機の室内機 WO2022091279A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2020/040559 WO2022091279A1 (ja) 2020-10-29 2020-10-29 天井埋込型空気調和機の室内機
JP2022558838A JPWO2022091450A1 (enrdf_load_stackoverflow) 2020-10-29 2021-03-31
CN202180067338.7A CN116261643A (zh) 2020-10-29 2021-03-31 天花板埋入式空调机的室内机
PCT/JP2021/013754 WO2022091450A1 (ja) 2020-10-29 2021-03-31 天井埋込型空気調和機の室内機

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/040559 WO2022091279A1 (ja) 2020-10-29 2020-10-29 天井埋込型空気調和機の室内機

Publications (1)

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WO2022091279A1 true WO2022091279A1 (ja) 2022-05-05

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PCT/JP2020/040559 WO2022091279A1 (ja) 2020-10-29 2020-10-29 天井埋込型空気調和機の室内機
PCT/JP2021/013754 WO2022091450A1 (ja) 2020-10-29 2021-03-31 天井埋込型空気調和機の室内機

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PCT/JP2021/013754 WO2022091450A1 (ja) 2020-10-29 2021-03-31 天井埋込型空気調和機の室内機

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JP (1) JPWO2022091450A1 (enrdf_load_stackoverflow)
CN (1) CN116261643A (enrdf_load_stackoverflow)
WO (2) WO2022091279A1 (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59132019U (ja) * 1983-02-23 1984-09-04 三菱重工業株式会社 空気調和機
JPH04335929A (ja) * 1991-05-10 1992-11-24 Sanyo Electric Co Ltd 空気調和機
JP2000065376A (ja) * 1998-08-19 2000-03-03 Toshiba Corp 天井カセット形空気調和機
JP2000240965A (ja) * 1999-02-19 2000-09-08 Fujitsu General Ltd 空気調和機
JP2008157530A (ja) * 2006-12-22 2008-07-10 Samsung Electronics Co Ltd 空調機の室内ユニット
JP2018165589A (ja) * 2017-03-28 2018-10-25 株式会社富士通ゼネラル 天井埋込型空気調和機の室内機

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6310315U (enrdf_load_stackoverflow) * 1986-07-07 1988-01-23
JP7393612B2 (ja) * 2019-02-27 2023-12-07 ダイキン工業株式会社 水位判定装置及びこの水位判定装置を備える空気調和機

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59132019U (ja) * 1983-02-23 1984-09-04 三菱重工業株式会社 空気調和機
JPH04335929A (ja) * 1991-05-10 1992-11-24 Sanyo Electric Co Ltd 空気調和機
JP2000065376A (ja) * 1998-08-19 2000-03-03 Toshiba Corp 天井カセット形空気調和機
JP2000240965A (ja) * 1999-02-19 2000-09-08 Fujitsu General Ltd 空気調和機
JP2008157530A (ja) * 2006-12-22 2008-07-10 Samsung Electronics Co Ltd 空調機の室内ユニット
JP2018165589A (ja) * 2017-03-28 2018-10-25 株式会社富士通ゼネラル 天井埋込型空気調和機の室内機

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JPWO2022091450A1 (enrdf_load_stackoverflow) 2022-05-05
CN116261643A (zh) 2023-06-13
WO2022091450A1 (ja) 2022-05-05

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