WO2018029878A1 - Unité intérieure et dispositif de climatisation - Google Patents

Unité intérieure et dispositif de climatisation Download PDF

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Publication number
WO2018029878A1
WO2018029878A1 PCT/JP2017/005854 JP2017005854W WO2018029878A1 WO 2018029878 A1 WO2018029878 A1 WO 2018029878A1 JP 2017005854 W JP2017005854 W JP 2017005854W WO 2018029878 A1 WO2018029878 A1 WO 2018029878A1
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WO
WIPO (PCT)
Prior art keywords
indoor unit
heat exchanger
region
partition member
air
Prior art date
Application number
PCT/JP2017/005854
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　大和
一浩 土橋
尾原　秀司
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to CN201780042561.XA priority Critical patent/CN109477645A/zh
Priority to KR1020197002431A priority patent/KR20190021419A/ko
Publication of WO2018029878A1 publication Critical patent/WO2018029878A1/fr

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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
    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • F24F2013/088—Air-flow straightener

Definitions

  • the present invention relates to an indoor unit and an air conditioner.
  • FIG. 1 a case having a top plate and side plates, a panel having a suction port at the center side on the lower side of the case and a blowout port at the outer periphery of the suction port,
  • a motor disposed inside the body, a centrifugal blower fastened to a rotary shaft of the motor, a heat exchanger disposed on the outer peripheral side of the centrifugal blower, and a water receiver disposed below the heat exchanger;
  • An air conditioner provided with a partition plate for dividing the flow path formed between the outer peripheral side of the heat exchanger and the side plate at the position corresponding to the outlet and along the short direction of the outlet.
  • Indoor unit is disclosed.
  • the air blown by the centrifugal fan passes through a substantially polygonal heat exchanger disposed so as to surround it, and a flat portion of the heat exchanger It flows into the room from the distributed outlets arranged along the.
  • the downwind side area of the heat exchanger when the indoor unit is viewed from above is divided into a first area between the heat exchanger and the outlet and a second area other than that. .
  • the air flow that has flowed from the heat exchanger into the first region flows into the outlet while maintaining the flow direction.
  • the air flow that has flowed from the heat exchanger into the second region collides with the wall surface of the casing, changes the flow direction to the circumferential direction of the heat exchanger, and flows into the blowout port. Therefore, the air outlet has an air flow substantially perpendicular to the heat exchanger through the first area, an air flow directed circumferentially to the heat exchanger through the second area, and a second area.
  • there are three types of air flow that is, an oblique air flow in which the flow direction is not completely directed in the circumferential direction.
  • an air passage area (hereinafter, referred to as an effective air passage area) that can effectively use the inside of the air passage of the blowout port is reduced, and a problem occurs that an increase in pressure loss causes an increase in power consumption. Further, during cooling, dew condensation occurs due to the hot and humid air taken in by the room coming in contact with the cooled louver due to the vortex generated in the vicinity of the louver, causing a problem that the dew condensation water falls into the room.
  • the indoor unit of the present invention suppresses the vortices generated at the heat exchanger circumferential end of the blowout port, rectifies the flow field in the vicinity of the louver, thereby reducing pressure loss and suppressing power consumption.
  • the purpose is to provide a machine.
  • the indoor unit comprises a housing, a motor for generating a rotational driving force, a centrifugal fan attached to the motor and discharging air sucked from below in the circumferential direction, and the centrifugal fan A heat exchanger for surrounding the blowout direction of the heat exchanger, and a blowoff port for blowing out the air having passed through the heat exchanger, in the downwind area of the heat exchanger, the area between the heat exchanger and the blowout port
  • region was provided.
  • the vortices generated at the end of the heat exchanger in the circumferential direction of the blowout are suppressed, and the flow near the louver is rectified to reduce pressure loss. It is possible to reduce power consumption.
  • FIG. 5 is a plan view showing the internal configuration of the indoor unit of the first embodiment.
  • FIG. 5 is a perspective view showing the internal configuration of the indoor unit of the first embodiment.
  • FIG. 14 is a perspective view showing the inside of the indoor unit of the second embodiment.
  • FIG. 16 is a perspective view showing the inside of the indoor unit of the third embodiment.
  • FIG. 18 is a perspective view showing the inside of the indoor unit of the fourth embodiment.
  • FIG. 21 is a top view showing the inside of the indoor unit of the fourth embodiment.
  • FIG. 18 is a perspective view showing the inside of the indoor unit of the fifth embodiment.
  • FIG. 20 is a perspective view showing the inside of the indoor unit of the sixth embodiment.
  • FIGS. 1 to 5 First, a conventional air conditioner indoor unit will be described using FIGS. 1 to 5.
  • FIG. 1 is a perspective view showing the appearance of a conventional air conditioner indoor unit.
  • the indoor unit is connected to an outdoor unit (not shown) via a refrigerant pipe to form an air conditioner.
  • a compressor is built in the outdoor unit, and the refrigerant is compressed by the compressor, and a refrigerant cycle is formed by circulating in the refrigerant pipe.
  • the indoor unit includes a housing 1 disposed in a ceiling and a panel 2 mounted on the indoor side of the housing 1.
  • the panel 2 is provided with a grill 3 for taking in air and an outlet 4 for blowing out the air sucked from the grill 3 into the room.
  • a louver 5 is attached to each of the outlets 4 to adjust the blowing direction of air.
  • FIG. 2 is a plan view when viewed from above with the housing 1 and the panel 2 removed from the indoor unit.
  • FIG. 3 is a cross-sectional view taken along the line AA of FIG.
  • the heat exchanger 8 exchanges heat between the air from the centrifugal fan 6 and the refrigerant.
  • a drain pan 7 for holding water so that the condensed water condensed by the heat exchanger 8 does not fall into the room during the cooling operation.
  • the flow of air by the centrifugal fan 6 will be referred to as an air flow 50
  • a straight line serving as an axis of rotation of the centrifugal fan will be referred to as a rotational axis Z.
  • the leeward region of the substantially polygonal heat exchanger 8 is between the heat exchanger 8 and the outlet 4.
  • the first region 20 is referred to as the first region 20, and the second region 21 is referred to as the second region.
  • the air flow 50a passing through the first area 20 flows into the outlet 4 in a direction substantially perpendicular to the heat exchanger 8, and the air flow passing through the second area 21 is an air flow 50b in the circumferential direction of the heat exchanger 8.
  • the air flow 50 c between the first area 20 and the air flow 50 c in the oblique direction flows into the air outlet 4.
  • FIG. 4 is a perspective view of a state in which the housing 1, the panel 2 and the louver 5 are removed from the indoor unit, and the vicinity of the curved surface portion of the outflow surface of the heat exchanger 8 is enlarged.
  • the air passage area of the outlet 4 is smaller than the outlet area of the heat exchanger 8, contraction of air occurs when the air flows into the outlet 4. Therefore, as shown in FIG. 4, the air flows 50 b and 50 c passing through the second region 21 are exfoliated at the end of the heat exchanger 8 in the circumferential direction of the blowout port 4, and a vortex 60 is generated.
  • FIG. 5 is a view showing the wind speed distribution in the air path of the blowout port 4 in the BB cross section of FIG. 3, and shows the wind speed distribution with the maximum wind speed being 1.
  • the wind speed distributions shown below are all the same.
  • a low speed area shown in dark tone is formed at the corner of the outlet 4. This low speed region causes a decrease in the effective air passage area of the blowout port 4 and causes an increase in pressure loss.
  • FIG. 6 is a wind speed distribution on the cross section CC shown in FIG. As shown here, it can be seen that the color tone is thin on the left side of the louver 5 and the speed is large. Also, it can be seen that the color tone is dark on the right side of the louver 5 where the vortex 60 is generated, and the air hardly flows. Furthermore, the air within the room is entrained by the vortex 60, and an air flow 52 is generated which collides with the right side of the louver 5.
  • louver 5 Since the louver 5 is cooled by the air flow 50 during the cooling operation, dew condensation occurs in the louver 5 when the high-temperature and high-humidity air flow 52 contacts the louver 5. As a result, it is conceivable that the condensed water condensed by the louver 5 may fall into the room during a long cooling operation.
  • the vortices 60 caused by the air flows 50 b and 50 c from the second region 21 cause a problem of an increase in pressure loss of the blowout port 4 and condensation of the louver 5.
  • FIGS. 7-10 The internal structure of the indoor unit of the air conditioner of Example 1 is shown using FIGS. 7-10. Note that the description in common with the explanation of FIGS. 1 to 6 is omitted.
  • FIG. 7 is a plan view when the housing 1 is removed from the indoor unit of the present embodiment as viewed from above.
  • the partition member 10 for blocking at least a part of the air flows 50 b and 50 c flowing from the second region 21 into the blowout port 4 is provided above the drain pan 7.
  • the partition members 10 are provided at both ends of all the second regions 21, but some partition members are taken into consideration in terms of the cost required for manufacturing and the method thereof, and the flow field of each outlet. Only the number 10 may be provided.
  • FIG. 8 is a perspective view in the vicinity of the curved surface portion of the outflow surface of the heat exchanger 8, and shows the shape of the partition member 10, the mounting position, and the like.
  • the flat partition member 10 of height L is attached to the end of the outlet 4 which is the upper part of the drain pan 7 and which is the boundary between the first area 20 and the second area 21.
  • the height of the partition member 10 is L and the height of the heat exchanger 8 is H, the flow in the vicinity of the louver 5 is more effectively performed by setting 0.2 ⁇ L / H ⁇ 0.8. It becomes possible to rectify. In the case where a plurality of partition members 10 are provided, the heights of the partition members 10 may not all be aligned.
  • FIG. 9 is a view showing the velocity distribution in the air passage of the outlet 4 of the present embodiment.
  • the wind speed distribution shown here is on the cross section BB shown in FIG. From the comparison between FIG. 5 and FIG. 9, it can be confirmed that the low speed region largely present at the corner of the outlet 4 in FIG. 5 corresponding to the conventional configuration is significantly reduced by providing the partition member 10.
  • FIG. 10 is a view showing the wind velocity distribution in the DD cross section shown in FIG. 9, and it can be understood that the color tone is thin and the speed is large even on the right side of the louver 5 by providing the partition member 10. . That is, it can be seen that the flow near the louver 5 is rectified and the generation of the vortex 60 is suppressed. As a result of the vortex 60 not being generated, the hot and humid air flow 52 does not collide with the cooled louver 5, so that the occurrence of condensation at the end of the louver 5 can be avoided.
  • the flow around the louver 5 can be rectified, and the pressure loss of the outlet 4 due to the expansion of the effective air passage area can be reduced. It is possible to suppress condensation.
  • the partition member 10 is illustrated as a flat plate, but if at least a part of the air flows 50b and 50c passing through the second region 21 can be blocked, the thickness and height partially change. It may be a member constituted by such a member or a curved surface. In this case, if the partition member 10 is a thin plate, the area in which the partition member blocks the outflow surface of the heat exchanger 8 can be reduced, and the pressure loss of the partition member itself can be reduced.
  • the partition member 10 is attached to the drain pan 7 in FIG. 8, the partition member 10 may be attached to the housing 1 or integrally formed with the housing 1.
  • the partition member 10 is attached to the drain pan 7 in FIG. 8, the partition member 10 may be attached to the heat exchanger 8 or may be integrally formed with the fins of the heat exchanger 8. In that case, since the heat transfer area of the heat exchanger 8 is expanded, it is possible to improve the heat exchange performance in addition to the effects described above.
  • an indoor unit provided with the centrifugal fan 6, the heat exchanger 8, the drain pan 7 provided at the lower part of the heat exchanger 8, the blowout port 4, and the louver 5 for determining the blowing direction of air
  • the centrifugal fan 6, the heat exchanger 8 and the drain pan 7 are disposed, and when viewed in a cross section perpendicular to the rotational axis of the centrifugal fan 6, the heat exchanger 8 and the blowout region in the leeward region of the heat exchanger 8.
  • the present invention can be applied to any indoor unit having a structure in which the end of the direction ends exfoliates to generate a vortex 60, thereby causing disturbance in the air flow flowing around the louver 5.
  • the partition member does not necessarily have to be integrally molded, and may be a member obtained by combining a plurality of parts as long as the same effect can be obtained.
  • FIG. 11 is a view showing the inside of the indoor unit when the second embodiment is applied.
  • the flat partition member 10 is used in the first embodiment
  • the curved partition member 11 is used in the present embodiment. The description of the points common to the first embodiment will be omitted.
  • FIG. 12 is a view showing the inside of the indoor unit when the third embodiment is applied.
  • the partition member 10 is provided at the boundary between the first region 20 and the second region 21.
  • the partition member 12 is provided closer to the second region 21 and the end of the outlet 4 is chamfered.
  • the corner portion 71 is provided. Note that the description in common with the above-described embodiment will be omitted.
  • FIG. 13 is a perspective view showing the inside of the indoor unit when the fourth embodiment is applied
  • FIG. 14 is a plan view of the present embodiment.
  • the partition member 10 is provided only above the drain pan 7 in the first embodiment, the partition member 13 extended also in the drain pan 7 is provided in the present embodiment. Note that the description in common with the above-described embodiment will be omitted.
  • the mounting position of the partition member 13 is the second region 21. I moved to. Further, in order to prevent the air flow 50 b from leaking from below the partition member 13, the partition member 13 was extended until it reached the bottom surface of the drain pan 7.
  • the partition member 13 at a predetermined distance from the inner wall of the side surface portion of the drain pan 7, the condensed water falls to the drain pan 7 even if dew condensation occurs on the partition member 13. It can prevent falling.
  • the configuration of the present embodiment may be used in combination with the configuration of the above-described embodiment.
  • FIG. 15 is a view showing the inside of the indoor unit when the fifth embodiment is applied.
  • the flat partition member 10 is used in the first embodiment
  • the partition member 14 having a through hole is used in the present embodiment. The description of the points common to the first embodiment will be omitted.
  • the pressure loss due to the partition member 14 can be reduced by providing the partition member 14 with a hole through which air of a predetermined flow rate can pass.
  • the holes are three rectangular slits per partition member, but the shape, number, and position of the holes may be any as long as air having a predetermined flow rate can pass therethrough. As a result, the flow resistance of the air flow 50b and the like is reduced, so that the pressure loss can be further suppressed.
  • the configuration of the present embodiment may be used in combination with the configuration of the above-described embodiment.
  • FIG. 16 is a view showing the inside of the indoor unit when the sixth embodiment is applied.
  • the flat partition member 10 is used in the first embodiment
  • the partition member 15 of the mesh material is used in the present embodiment. The description of the points common to the first embodiment will be omitted.
  • the pressure loss due to the partition member 15 can be reduced by making the partition member 15 a mesh material through which air of a predetermined flow rate can pass. Moreover, when the airflows 50 b and 50 c pass over the partition member 15, it is possible to suppress the peeling that occurs above the partition member 15, and it is possible to more effectively reduce the pressure loss.
  • all the partition members 15 are comprised by the mesh raw material, it does not matter as a mesh raw material partially.
  • the configuration of the present embodiment may be used in combination with the configuration of the above-described embodiment.
  • Reference Signs List 1 housing, 2 panels, 3 grills, 4 outlets, 5 louvers 6 centrifugal fans, 7 drain pans, 8 heat exchangers, 9 filters, 10, 11, 12, 13, 14, 15 partition members, 20 first area, 21 second region, 40 motors 50, 50a, 50b, 50c, 52 airflow, 60 vortices 71 corner portion Z rotation axis

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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)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Abstract

La présente invention a pour but la division du côté aval d'un échangeur de chaleur dans une unité intérieure d'un dispositif de climatisation, vu dans une section transversale verticale par rapport à l'axe de rotation d'un ventilateur centrifuge, en une première région entre l'échangeur de chaleur et un orifice de soufflage, et une seconde région englobant la zone restante, afin de dévier l'écoulement d'air, à proximité d'une persienne, produit par l'écoulement d'air vers l'orifice de soufflage après avoir traversé la seconde région, ce qui permet d'améliorer l'efficacité du dispositif de climatisation. Afin d'atteindre ce but, l'unité intérieure comprend une enveloppe, un moteur destiné à produire une force d'entraînement en rotation, un ventilateur centrifuge monté au moteur et soufflant de l'air aspiré du dessous dans une direction circonférentielle, un échangeur de chaleur entourant la direction de soufflage du ventilateur centrifuge, et un orifice de soufflage destiné à souffler l'air qui a traversé l'échangeur de chaleur. Un élément de séparation, destiné à bloquer au moins partiellement l'écoulement d'air coulant de la seconde région à l'orifice de soufflage, définit la portion de la partie aval de l'échangeur de chaleur, se trouvant entre l'échangeur de chaleur et l'orifice de soufflage, en tant que première région et la zone restante en tant que seconde région.
PCT/JP2017/005854 2016-08-10 2017-02-17 Unité intérieure et dispositif de climatisation WO2018029878A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201780042561.XA CN109477645A (zh) 2016-08-10 2017-02-17 室内机以及空调
KR1020197002431A KR20190021419A (ko) 2016-08-10 2017-02-17 실내기 및 공기 조화기

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016157381A JP2018025357A (ja) 2016-08-10 2016-08-10 室内機および空気調和機
JP2016-157381 2016-08-10

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WO2018029878A1 true WO2018029878A1 (fr) 2018-02-15

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PCT/JP2017/005854 WO2018029878A1 (fr) 2016-08-10 2017-02-17 Unité intérieure et dispositif de climatisation

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JP (1) JP2018025357A (fr)
KR (1) KR20190021419A (fr)
CN (1) CN109477645A (fr)
WO (1) WO2018029878A1 (fr)

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WO2022179102A1 (fr) * 2021-02-25 2022-09-01 广东美的制冷设备有限公司 Ensemble de dispersion d'air, unité intérieure de climatiseur et climatiseur

Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2000193264A (ja) * 1998-12-25 2000-07-14 Hitachi Ltd 空気調和機
JP2005069586A (ja) * 2003-08-26 2005-03-17 Matsushita Electric Ind Co Ltd 天井カセツト形空気調和機
JP2005249237A (ja) * 2004-03-02 2005-09-15 Matsushita Electric Ind Co Ltd 空気調和機の室内ユニット
WO2012169110A1 (fr) * 2011-06-09 2012-12-13 三菱電機株式会社 Unité intérieure pour climatiseur
WO2014174625A1 (fr) * 2013-04-24 2014-10-30 三菱電機株式会社 Conditionneur d'air

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4553812B2 (ja) * 2005-08-26 2010-09-29 三菱電機株式会社 空気調和機
US20150276246A1 (en) * 2013-09-17 2015-10-01 Mitsubishi Electric Corporation Air conditioning apparatus
BR112016015825A2 (pt) * 2014-01-08 2017-08-08 Hitachi Johnson Controls Air Conditioning Inc Unidade interna para aparelho de ar condicionado
JP2015158318A (ja) 2014-02-25 2015-09-03 日立アプライアンス株式会社 空気調和機の室内機

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000193264A (ja) * 1998-12-25 2000-07-14 Hitachi Ltd 空気調和機
JP2005069586A (ja) * 2003-08-26 2005-03-17 Matsushita Electric Ind Co Ltd 天井カセツト形空気調和機
JP2005249237A (ja) * 2004-03-02 2005-09-15 Matsushita Electric Ind Co Ltd 空気調和機の室内ユニット
WO2012169110A1 (fr) * 2011-06-09 2012-12-13 三菱電機株式会社 Unité intérieure pour climatiseur
WO2014174625A1 (fr) * 2013-04-24 2014-10-30 三菱電機株式会社 Conditionneur d'air

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CN109477645A (zh) 2019-03-15
KR20190021419A (ko) 2019-03-05
JP2018025357A (ja) 2018-02-15

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