WO2012124457A1 - Unité extérieure pour climatiseur - Google Patents

Unité extérieure pour climatiseur Download PDF

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Publication number
WO2012124457A1
WO2012124457A1 PCT/JP2012/054744 JP2012054744W WO2012124457A1 WO 2012124457 A1 WO2012124457 A1 WO 2012124457A1 JP 2012054744 W JP2012054744 W JP 2012054744W WO 2012124457 A1 WO2012124457 A1 WO 2012124457A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
water
outdoor unit
air conditioner
bottom plate
Prior art date
Application number
PCT/JP2012/054744
Other languages
English (en)
Japanese (ja)
Inventor
佳延 絞野
博美 森
達 永田
Original Assignee
シャープ株式会社
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 シャープ株式会社 filed Critical シャープ株式会社
Publication of WO2012124457A1 publication Critical patent/WO2012124457A1/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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/36—Drip trays for outdoor units
    • 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
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger

Definitions

  • the present invention relates to an outdoor unit of an air conditioner, and more particularly to an outdoor unit of an air conditioner provided with a drain port for draining defrost water of a heat exchanger.
  • FIG. 9 is a partially enlarged view of the inside front of the outdoor unit of the air conditioner.
  • an outdoor heat exchanger 4 is arranged on a bottom plate 11 forming a cabinet (not shown).
  • the bottom plate 11 is installed on the support base 8 via the mounting legs 7.
  • the outdoor heat exchanger 4 becomes an evaporator, and a low-temperature refrigerant flows.
  • frost frost
  • a defrosting operation is performed at predetermined time intervals. When the defrosting operation is performed, water in which frost has melted, that is, defrosted water W is generated in the outdoor heat exchanger 4.
  • the drain plate 15 is provided in the bottom plate 11 on which the outdoor heat exchanger 4 is installed.
  • the defrost water W of the outdoor heat exchanger 4 is drained from the drain port 15 to the outside of the outdoor unit 2 during the defrosting operation.
  • JP 2009-180415 A page 3-5, FIG. 3
  • Japanese Patent Laid-Open No. 9-145095 Page 2, FIGS. 2 and 3
  • the drainage port 15 provided in the bottom plate 11 has a structure that opens vertically downward and drains the defrost water W vertically downward. That is, the defrost water W drained from the drainage port 15 is drained as it is toward the support base 8 directly below the drainage port 15 and the ground.
  • An object of the present invention is to provide an outdoor unit of an air conditioner that can prevent the drainage port from being blocked by freezing of drainage from the drainage port.
  • the present invention provides an outdoor unit for an air conditioner in which a heat exchanger is installed on a bottom plate that opens a drain port, and defrost water of the heat exchanger is drained from the drain port.
  • the present invention is characterized in that a water guiding portion is provided for guiding the defrost water flowing out from the drain outlet in the outer peripheral direction directly below the drain outlet.
  • defrost water flows down from the heat exchanger of the outdoor unit to the bottom plate during the defrosting operation of the air conditioner.
  • the defrosted water that has flowed down flows out of the outdoor unit through the drain port on the bottom plate.
  • the defrost water that has flowed out of the drainage port by the water guide portion is guided in the outer peripheral direction directly below the drainage port.
  • the present invention preferably includes an inclined surface in which the bottom surface of the water guide portion is inclined downward. According to this structure, the defrost water which flowed out from the drain outlet is guide
  • the drain port is provided in a peripheral portion of the bottom plate, and defrost water is guided to the outer peripheral side of the bottom plate by the water guide portion. According to this structure, the defrost water of a heat exchanger is drained in the position away from the outdoor unit.
  • the defrost water that has flowed out from the drain outlet is provided with a water guide portion that guides the defrost water in the outer peripheral direction directly below the drain outlet. Therefore, the defrost water is drained to a position away from directly below the drain outlet.
  • the drainage port can be prevented from being blocked by freezing of the drainage from
  • the figure which shows the refrigerating cycle of the air conditioner of embodiment of this invention The front view which shows the inside of the outdoor unit of the air conditioner of embodiment of this invention.
  • the perspective view which looked at the inside of the outdoor unit of the air conditioner of embodiment of this invention from the bottom face side The perspective view which looked at the inside of the outdoor unit of the air conditioner of embodiment of this invention from the front side
  • the perspective view which looked at the baseplate inside the outdoor unit of the air conditioner of embodiment of this invention from the front side The perspective view which expanded the B section of FIG.
  • the front view which expanded the A section of FIG. The partial expanded perspective view which looked at the heat exchanger of the outdoor unit of the air conditioner of embodiment of this invention from the compressor side Partial enlarged view of the inside front of a conventional air conditioner outdoor unit
  • the air conditioner 1 includes an outdoor unit 2 arranged outside and an indoor unit 3 arranged indoors.
  • the indoor unit 3 has an inlet (not shown) and an outlet (not shown) that are open, and a blower (not shown) and an indoor heat exchanger 6 are arranged inside.
  • the blower sucks air from the suction port and sends out air (conditioned air) exchanged with the indoor heat exchanger 6 from the blower outlet.
  • the outdoor unit 2 includes an outdoor heat exchanger 4 and a compressor 5 installed on a bottom plate 11 (see FIG. 2).
  • the outdoor unit 2 includes a four-way valve 22 that switches the refrigerant flow and an expansion valve 21 that decompresses and expands the refrigerant.
  • the compressor 5, the four-way valve 22, the indoor heat exchanger 6, the expansion valve 21, and the outdoor heat exchanger 4 are connected by a refrigerant pipe 20.
  • the refrigerant tube 20 is formed of a material having good thermal conductivity, and is formed of, for example, a copper tube.
  • a refrigerant pipe 20 between the indoor heat exchanger 6 and the outdoor heat exchanger 4 is disposed in the vicinity of the outdoor heat exchanger 4. Details of the arrangement of the refrigerant pipe 20 will be described later.
  • a solid arrow A indicates the flow of the refrigerant during the heating operation of the air conditioner 1. Further, during the heating operation, the four-way valve 22 is switched to the solid line position. The refrigerant in a high-temperature and high-pressure gas state discharged from the compressor 5 is sent to the indoor heat exchanger 6 through the four-way valve 22. At this time, the indoor heat exchanger 6 functions as a condenser, and the refrigerant returns to liquid by dissipating heat to the indoor air. The refrigerant that has passed through the indoor heat exchanger 6 reaches the outdoor heat exchanger 4 via the expansion valve 21.
  • the expansion valve 21 expands the refrigerant under reduced pressure to lower the boiling point of the refrigerant.
  • the outdoor heat exchanger 4 functions as an evaporator, and the liquid refrigerant whose boiling point is lowered after passing through the expansion valve 21 is vaporized by taking heat of evaporation from the surroundings in the outdoor heat exchanger 4.
  • the refrigerant passes through the four-way valve 22 and is sent to the compressor 5.
  • the compressor 5 compresses the refrigerant into a high-temperature and high-pressure gas state.
  • Dotted arrow B indicates the flow of refrigerant during the defrosting operation of the air conditioner 1. Further, during the defrosting operation, the four-way valve 22 is switched to the dotted line position. During the defrosting operation, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 5 is sent to the outdoor heat exchanger 4 through the four-way valve 22. At this time, the outdoor heat exchanger 4 functions as a condenser, and the refrigerant returns to liquid by dissipating heat to the surroundings. The refrigerant that has passed through the outdoor heat exchanger 4 passes through the expansion valve 21 and reaches the indoor heat exchanger 6.
  • the expansion valve 21 expands the refrigerant under reduced pressure to lower the boiling point of the refrigerant.
  • the indoor heat exchanger 6 functions as an evaporator, and the liquid refrigerant that has passed through the expansion valve 21 and has a lower boiling point takes the heat of evaporation from the surroundings and vaporizes in the indoor heat exchanger 6.
  • the refrigerant passes through the four-way valve 22 and is sent to the compressor 5.
  • the compressor 5 compresses the refrigerant into a high-temperature and high-pressure gas state.
  • the outdoor heat exchanger 4 When the outdoor heat exchanger 4 is an evaporator, the low-temperature refrigerant flows through the refrigerant pipe 4a (see FIGS. 3 and 4) of the outdoor heat exchanger 4, and the fins 4c (FIG. 3 and FIG. 3) of the outdoor heat exchanger 4 (See FIG. 4). Thereby, the phenomenon (frosting phenomenon) that the moisture in the air adheres as frost on the surface of the fin 4c occurs. When frost formation occurs, cold heat transfer from the fins 4c to the air is deteriorated. Further, the gap between the fins 4c is narrowed by frost, so that the air hardly flows. Therefore, the air volume is reduced and the heat exchange efficiency is reduced.
  • frost is melted by performing a defrosting operation that reverses the roles of the evaporator and the condenser at predetermined time intervals. Since the timing for performing the defrosting operation may use a known technique, the description is omitted in this embodiment.
  • FIG. 2 is a front view showing the inside of the outdoor unit 2.
  • the outdoor unit 2 is arranged outside and an exterior is formed by a metal cabinet (not shown).
  • a compressor 5 is installed on one side of the bottom plate 11 of the cabinet.
  • An outdoor heat exchanger 4 is installed on the bottom plate 11 at the side of the compressor 5.
  • a fan (not shown) is disposed in front of the outdoor heat exchanger 4. The fan takes in outside air from a suction port (not shown) provided in a cabinet that covers the outdoor unit 2 and promotes heat exchange by the outdoor heat exchanger 4.
  • the bottom plate 11 is mounted on the support base 8 via the mounting legs 7. Thereby, a space is formed between the bottom plate 11 and the support base 8.
  • the support base 8 is formed in a frame shape having an opening at the center (see FIG. 3).
  • the outdoor unit 2 is stably supported by the support base 8.
  • FIG. 3 is a perspective view of the interior of the outdoor unit 2 viewed from the bottom side.
  • FIG. 4 is a perspective view of the interior of the outdoor unit 2 as viewed from the front side.
  • the outdoor heat exchanger 4 is formed by fixing a large number of fins 4c (the outer shape of the entire fin is described in FIGS. 3 and 4) to the refrigerant pipe 4a.
  • the refrigerant pipe 4a meanders with curved portions 4b formed at both ends in the horizontal direction. Further, the refrigerant pipe 4 a is bent in an L shape in plan view, and is disposed along the peripheral portion of the bottom plate 11.
  • FIG. 5 is a perspective view of the bottom plate 11 inside the outdoor unit 2 as seen from the front side.
  • the outdoor heat exchanger 4 is not shown.
  • the bottom plate 11 is formed of a metal such as a steel plate.
  • a drain port 15 is provided in the peripheral portion of the bottom plate 11. As a result, the drain port 15 is arranged directly below the outdoor heat exchanger 4.
  • the defrost water generated in the outdoor heat exchanger 4 by the defrosting operation of the air conditioner 1 flows down to the bottom plate 11.
  • the defrost water is drained from the drain port 15 to the outside of the outdoor unit 2. Thereby, the defrost water which flowed down from the outdoor heat exchanger 4 is drained rapidly.
  • FIG. 6 is an enlarged perspective view of a portion B in FIG.
  • the drainage port 15 is opened in a semicircular shape, and an inclined surface 15b that is inclined downward from the arc-shaped peripheral edge portion 15a is formed.
  • a water guide 15c (see FIG. 7) described later is formed by the inclined surface 15b.
  • the defrost water that has reached the arcuate peripheral edge 15 a is guided by the inclined surface 15 b and drawn into the drain port 15. Thereby, it can prevent that defrost water stays on the drain port 15 by surface tension, and defrost water is drained from the baseplate 11 smoothly.
  • the drain port 15 and the inclined surface 15 b are formed by drawing, and the inclined surface 15 b is formed integrally with the bottom plate 11.
  • FIG. 7 is an enlarged front view of part A in FIG.
  • the inclined surface 15 b extending from the discharge port 15 forms the bottom surface of the water guide portion 15 c that guides the drainage of the drain port 15.
  • the defrost water W that has flowed out of the drain port 15 is guided in the outer peripheral direction directly below the drain port 15 by the water guide portion 15 c. Thereby, the defrost water W which flowed out from the drain port 15 is not drained directly under the drain port 15, and blockage of the drain port 15 due to freezing of the defrost water W drained from the drain port 15 can be prevented.
  • the drainage port 15 is provided in the peripheral portion of the bottom plate 11, and the end portion of the support base 8 is located immediately below the drainage port 15.
  • the defrost water W is guide
  • the defrost water W flows down toward the outside of the support base 8. Therefore, the defrost water W can be prevented from accumulating on the support base 8, and the drainage port 15 can be prevented from being blocked by the freezing of the defrost water W accumulated on the support base 8.
  • a plurality of drain ports 15 may be provided. By providing a plurality of drain ports 15, the defrost water W is drained from the bottom plate 11 more quickly. Further, since the drainage port 15 is formed by drawing the bottom plate 11, even if a plurality of drainage ports 15 are provided, a decrease in the strength of the bottom plate 11 can be prevented.
  • the bottom surface of the water guide portion 15 c may be formed of a plane extending in the horizontal direction from directly below the drain port 15. Even in this case, the water guiding portion 15 c can guide the defrost water W flowing out from the drain port 15 toward the outer periphery with respect to the position immediately below the drain port 15. It is preferable that the bottom surface of the water guide portion 15c is formed of the inclined surface 15b because the defrost water W can be drained more smoothly and drained to a position further away from directly below the drain port 15.
  • the drain port 15 may be provided in a portion other than the peripheral portion of the bottom plate 11. For example, you may provide in the approximate center part of the baseplate 11. FIG. Moreover, you may guide the defrost water W to the inner peripheral side of the baseplate 11 by the water guide part 15c. That is, if the water guide 15c can guide the defrost water flowing out from the drain port 15 in the outer peripheral direction directly below the drain port 15, the drain port 15 of the drain port 15 due to freezing of the defrost water W drained from the drain port 15 can be used. Blockage can be prevented.
  • the drainage port 15 is provided in the peripheral portion of the bottom plate 11 and the defrost water is guided to the outer peripheral side of the bottom plate 11 by the water guiding portion 15c as in the present embodiment.
  • the drainage port 15 can be more reliably prevented from being blocked by the drainage of the drainage from the drainage port 15.
  • the inclined surface 15b may be formed of a member different from the bottom plate 11. Thereby, the freedom degree of design of the inclined surface 15b increases, and by extension, the freedom degree of design of the water conveyance part 15c increases.
  • the flow path of the defrost water may be narrower as it goes from the drain port 15 to the terminal end (exit) of the water guide portion 15c.
  • it can be easily realized by squeezing the water guide portion 15c by drawing.
  • the flow speed of defrost water becomes so large that it goes to the termination
  • blockage of the drainage port 15 due to freezing of the defrosted water W drained from the drainage port 15 can be prevented more reliably.
  • the refrigerant pipe 20 (see FIG. 1) between the indoor heat exchanger 6 and the expansion valve 21 is arranged between the outdoor heat exchanger 4 and the bottom plate 11.
  • FIG. Therefore, it is possible to prevent the defrost water flowing down from the outdoor heat exchanger 4 from freezing on the lower part of the outdoor heat exchanger 4 or on the bottom plate 11.
  • the refrigerant pipe 20 between the indoor heat exchanger 6 and the expansion valve 21 may be disposed in the vicinity of the drain port 15. Thereby, freezing of the defrost water in the drain port 15 can be prevented more reliably.
  • the refrigerant pipe 20 (see FIG. 1) between the indoor heat exchanger 6 and the expansion valve 21 is connected to the refrigerant inflow side or the refrigerant outflow side of the outdoor heat exchanger 4.
  • tube 23 or the branch pipe 24 can be prevented.
  • the defrost water flowing out from the drain port 15 is provided with the water guiding portion 15c that guides the defrost water in the outer peripheral direction directly below the drain port 15, so the defrost water is at a position away from directly below the drain port 15. Drained. Therefore, the drainage port 15 can be prevented from being blocked by freezing of the drainage from the drainage port 15.
  • the bottom surface of the water guide portion 15c is composed of the inclined surface 15b inclined downward, the defrost water in the water guide portion 15c can be drained smoothly, and the defrost water is further separated from directly below the drain port 15. Can drain into position.
  • the drain port 15 is provided in the peripheral part of the baseplate 11, and defrost water is guide
  • the present invention can be used for an outdoor unit of an air conditioner having a drain port for draining defrost water of a heat exchanger.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

L'invention porte sur une unité extérieure (2) pour un climatiseur (1), pour laquelle unité un échangeur de chaleur (4) est disposé sur une plaque inférieure (11) dans laquelle un orifice de décharge d'eau (15) est ouvert, et une eau dégivrée provenant de l'échangeur de chaleur (4) est déchargée à partir de l'orifice de décharge d'eau (15), une partie de guidage d'eau (15c), qui guide l'eau dégivrée s'écoulant à partir de l'orifice de décharge d'eau (15) vers la périphérie externe par rapport à la zone directement au-dessous de l'orifice de décharge d'eau (15), étant disposée.
PCT/JP2012/054744 2011-03-17 2012-02-27 Unité extérieure pour climatiseur WO2012124457A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011059781A JP2012193925A (ja) 2011-03-17 2011-03-17 空気調和機の室外機
JP2011-059781 2011-03-17

Publications (1)

Publication Number Publication Date
WO2012124457A1 true WO2012124457A1 (fr) 2012-09-20

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PCT/JP2012/054744 WO2012124457A1 (fr) 2011-03-17 2012-02-27 Unité extérieure pour climatiseur

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JP (1) JP2012193925A (fr)
WO (1) WO2012124457A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018100601A1 (fr) * 2016-11-29 2018-06-07 三菱電機株式会社 Unité intérieure de climatiseur et climatiseur doté de cette dernière
EP3450860A1 (fr) * 2017-09-01 2019-03-06 Daikin Europe N.V. Unité extérieure pour une pompe de chaleur à source d'air
JPWO2021070316A1 (fr) * 2019-10-10 2021-04-15
JP2021081082A (ja) * 2019-11-14 2021-05-27 ダイキン工業株式会社 空気調和機

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6919697B2 (ja) * 2019-11-14 2021-08-18 ダイキン工業株式会社 空気調和機

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526371U (fr) * 1978-08-08 1980-02-20
JPH03103931U (fr) * 1990-02-08 1991-10-29
JPH1163571A (ja) * 1997-08-20 1999-03-05 Fujitsu General Ltd 空気調和機の室外機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526371U (fr) * 1978-08-08 1980-02-20
JPH03103931U (fr) * 1990-02-08 1991-10-29
JPH1163571A (ja) * 1997-08-20 1999-03-05 Fujitsu General Ltd 空気調和機の室外機

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018100601A1 (fr) * 2016-11-29 2018-06-07 三菱電機株式会社 Unité intérieure de climatiseur et climatiseur doté de cette dernière
JPWO2018100601A1 (ja) * 2016-11-29 2019-06-27 三菱電機株式会社 空気調和機の室外機およびそれを備えた空気調和機
US11193678B2 (en) 2016-11-29 2021-12-07 Mitsubishi Electric Corporation Outdoor unit for air-conditioning apparatus, and air-conditioning apparatus including the same
EP3450860A1 (fr) * 2017-09-01 2019-03-06 Daikin Europe N.V. Unité extérieure pour une pompe de chaleur à source d'air
JPWO2021070316A1 (fr) * 2019-10-10 2021-04-15
JP7170895B2 (ja) 2019-10-10 2022-11-14 三菱電機株式会社 空気調和機の室外ユニット
JP2021081082A (ja) * 2019-11-14 2021-05-27 ダイキン工業株式会社 空気調和機
JP7048901B2 (ja) 2019-11-14 2022-04-06 ダイキン工業株式会社 空気調和機

Also Published As

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