WO2012124457A1 - Outdoor unit for air conditioner - Google Patents

Outdoor unit for air conditioner 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
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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
French (fr)
Japanese (ja)
Inventor
佳延 絞野
博美 森
達 永田
Original Assignee
シャープ株式会社
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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/en

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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

An outdoor unit (2) for an air conditioner (1), for which a heat exchanger (4) is arranged on a bottom plate (11) in which a water discharge port (15) is opened, and defrosted water from the heat exchanger (4) is discharged from the water discharge port (15), wherein a water-guiding part (15c), which guides the defrosted water flowing from the water discharge port (15) toward the outer periphery with respect to the area directly beneath the water discharge port (15), is provided.

Description

空気調和機の室外機Air conditioner outdoor unit
　本発明は、空気調和機の室外機に関し、特に熱交換器の除霜水を排水する排水口を備えた空気調和機の室外機に関する。 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.
　従来の空気調和機の室外機は特許文献１、２に開示されている。図９はこの空気調和機の室外機の内部正面の部分拡大図である。室外機２はキャビネット（不図示）を形成する底板１１上に室外熱交換器４が配される。底板１１は取付脚７を介して支持台８上に設置される。空気調和機の暖房運転時には室外熱交換器４は蒸発器となり低温の冷媒が流れる。このとき、空気中の水分が室外熱交換器４に霜となって付着する現象（着霜現象）が生じる。この霜を溶かすために、所定の時間間隔で除霜運転を行う。除霜運転を行うと、室外熱交換器４には霜が溶けた水、すなわち除霜水Ｗが発生する。 Conventional air conditioner outdoor units are disclosed in Patent Documents 1 and 2. FIG. 9 is a partially enlarged view of the inside front of the outdoor unit of the air conditioner. In the outdoor unit 2, 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. During the heating operation of the air conditioner, the outdoor heat exchanger 4 becomes an evaporator, and a low-temperature refrigerant flows. At this time, a phenomenon occurs in which moisture in the air adheres to the outdoor heat exchanger 4 as frost (frosting phenomenon). In order to melt this 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.
　室外熱交換器４が設置された底板１１には排水口１５が設けられている。除霜運転時に室外熱交換器４の除霜水Ｗは排水口１５から室外機２の外部に排水される。 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.
特開２００９－１８０４１５号公報（第３－５頁、図３）JP 2009-180415 A (page 3-5, FIG. 3) 特開平９－１４５０９５号公報（第２頁、図２、図３）Japanese Patent Laid-Open No. 9-145095 (Page 2, FIGS. 2 and 3)
　上記従来の空気調和機の室外機２では、底板１１に設けられた排水口１５は鉛直下向きに開口して鉛直下方向に除霜水Ｗを排水する構造となっている。すなわち、排水口１５から排水された除霜水Ｗはそのまま排水口１５の直下の支持台８や地面に向かって排水される。 In the outdoor unit 2 of the conventional air conditioner, 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.
　しかしながら、極低温の環境下（例えば、厳冬期や厳寒地など）では、排水口１５から直下に排水された除霜水Ｗは支持台８や地面で凍結して氷９となる。そして、排水のたびに氷９が上方に向かって成長して氷柱が形成される。このため、氷柱が排水口１５に到達することによって、排水口１５を閉塞するという問題があった。 However, in an extremely low temperature environment (for example, a severe winter season or a cold region), the defrost water W drained directly from the drain port 15 freezes on the support base 8 or the ground and becomes ice 9. And every time it drains, the ice 9 grows upward and an ice column is formed. For this reason, there has been a problem that the drainage port 15 is blocked when the ice column reaches the drainage port 15.
　本発明は、排水口からの排水の凍結による排水口の閉塞を防止できる空気調和機の室外機を提供することを目的とする。 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.
　上記目的を達成するために本発明は、排水口を開口する底板上に熱交換器を設置し、前記熱交換器の除霜水を前記排水口から排水する空気調和機の室外機において、前記排水口から流出した除霜水を前記排水口の直下に対して外周方向に導く導水部を設けたことを特徴としている。 In order to achieve the above object, 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.
　この構成によると、空気調和機の除霜運転時に室外機の熱交換器から除霜水が底板へ流下する。流下した除霜水は底板上の排水口から室外機の外部に流出する。導水部により排水口から流出した除霜水は排水口の直下に対して外周方向に導かれる。 According to this configuration, 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.
　また本発明は、上記構成の空気調和機の室外機において、前記導水部の底面が下方に傾斜する傾斜面から成ることが好ましい。この構成によると、排水口から流出した除霜水は斜め下方に導かれる。 In the outdoor unit of the air conditioner having the above-described configuration, 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 | induced to diagonally downward.
　また本発明は、上記構成の空気調和機の室外機において、前記排水口が前記底板の周部に設けられ、前記導水部によって前記底板の外周側に除霜水を導くことが好ましい。この構成によると、熱交換器の除霜水は室外機から離れた位置に排水される。 Further, in the outdoor unit of the air conditioner having the above configuration according to the present invention, it is preferable that 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.
　本発明によると、排水口から流出した除霜水を排水口の直下に対して外周方向に導く導水部を設けたので、除霜水は排水口の直下から離れた位置に排水され、排水口からの排水の凍結による排水口の閉塞を防止できる。 According to the present invention, 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
本発明の実施形態の空気調和機の冷凍サイクルを示す図The figure which shows the refrigerating cycle of the air conditioner of embodiment of this invention. 本発明の実施形態の空気調和機の室外機の内部を示す正面図The front view which shows the inside of the outdoor unit of the air conditioner of embodiment of this invention 本発明の実施形態の空気調和機の室外機の内部を底面側から見た斜視図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 本発明の実施形態の空気調和機の室外機の内部を正面側から見た斜視図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 本発明の実施形態の空気調和機の室外機内部の底板を正面側から見た斜視図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 図５のＢ部を拡大した斜視図The perspective view which expanded the B section of FIG. 図２のＡ部を拡大した正面図The front view which expanded the A section of FIG. 本発明の実施形態の空気調和機の室外機の熱交換器を圧縮機側から見た部分拡大斜視図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 従来の空気調和機の室外機の内部正面の部分拡大図Partial enlarged view of the inside front of a conventional air conditioner outdoor unit
　以下に本発明の実施形態を図面を参照して説明する。説明の便宜上、前述の図９に示す従来例と同様の部分には同一の符号を付している。図１は一実施形態の空気調和機１の冷凍サイクルを示す図である。空気調和機１は室外に配される室外機２と室内に配される室内機３とを備える。室内機３は吸込口（不図示）及び吹出口（不図示）が開口し、内部には送風機（不図示）、室内熱交換器６が配される。送風機は吸込口から空気を吸い込んで室内熱交換器６と熱交換した空気（調和空気）を吹出口から送出する。 Embodiments of the present invention will be described below with reference to the drawings. For convenience of explanation, the same reference numerals are given to the same parts as those in the conventional example shown in FIG. Drawing 1 is a figure showing the refrigerating cycle of air harmony machine 1 of one embodiment. 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.
　室外機２は底板１１（図２参照）上に設置される室外熱交換器４及び圧縮機５を備える。また、室外機２は冷媒の流れを切り替える四方弁２２及び冷媒を減圧膨張させる膨張弁２１を備えている。圧縮機５、四方弁２２、室内熱交換器６、膨張弁２１、及び室外熱交換器４は冷媒管２０により接続されている。冷媒管２０は熱伝導性が良好な材料で形成され、例えば銅管などで形成される。室内熱交換器６と室外熱交換器４との間の冷媒管２０は室外熱交換器４の近傍に配置されている。この冷媒管２０の配置についての詳細は後述する。 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.
　実線矢印Ａは空気調和機１の暖房運転時の冷媒の流れを示している。また、暖房運転時には、四方弁２２が実線位置に切り替わる。圧縮機５から吐出された高温高圧の気体状態にある冷媒は、四方弁２２を経て室内熱交換器６に送られる。この時、室内熱交換器６は凝縮器として機能し、冷媒は室内の空気に熱を放熱することで液体に戻る。室内熱交換器６を通過した冷媒は、膨張弁２１を経て室外熱交換器４に到達する。 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.
　膨張弁２１は冷媒を減圧膨張させて冷媒の沸点を下げる。このとき、室外熱交換器４は蒸発器として機能し、膨張弁２１を通過して沸点が下がった液体状の冷媒は室外熱交換器４において周囲から蒸発熱を奪って気化する。その後、冷媒は四方弁２２を通過して圧縮機５に送られる。圧縮機５は冷媒を圧縮して高温高圧の気体状態にする。 The expansion valve 21 expands the refrigerant under reduced pressure to lower the boiling point of the refrigerant. At this time, 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. Thereafter, 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.
　点線矢印Ｂは空気調和機１の除霜運転時の冷媒の流れを示している。また、除霜運転時には、四方弁２２が点線位置に切り替わる。除霜運転時には、圧縮機５から吐出された高温高圧の気体状態にある冷媒は四方弁２２を経て室外熱交換器４に送られる。この時、室外熱交換器４は凝縮器として機能し、冷媒は周囲に熱を放熱することで液体に戻る。室外熱交換器４を通過した冷媒は膨張弁２１を通過して室内熱交換器６に到達する。 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.
　膨張弁２１は冷媒を減圧膨張させて冷媒の沸点を下げる。このとき、室内熱交換器６は蒸発器として機能し、膨張弁２１を通過して沸点の下がった液体状の冷媒は室内熱交換器６において周囲から蒸発熱を奪って気化する。その後、冷媒は四方弁２２を通過して圧縮機５に送られる。圧縮機５は冷媒を圧縮して高温高圧の気体状態にする。 The expansion valve 21 expands the refrigerant under reduced pressure to lower the boiling point of the refrigerant. At this time, 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. Thereafter, 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.
　室外熱交換器４が蒸発器となっている場合、室外熱交換器４の冷媒管４ａ（図３、図４参照）を低温の冷媒が流れ、室外熱交換器４のフィン４ｃ（図３、図４参照）の表面温度が低下する。これにより、空気中の水分がフィン４ｃの表面に霜となって付着する現象（着霜現象）が生じる。着霜が生じるとフィン４ｃから空気への冷熱伝達が悪くなる。また、フィン４ｃの隙間が霜により狭められて空気が流れにくくなる。したがって、風量が低下して熱交換効率が低下する。これを防ぐため、所定の時間間隔で蒸発器と凝縮器の役割を逆転する除霜運転を行って霜を溶かすようになっている。除霜運転を行うタイミングは既知の技術を使用すればよいので、本実施形態では説明を省略する。 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. In order to prevent this, 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.
　図２は室外機２の内部を示す正面図である。室外機２は室外に配され、金属製のキャビネット（不図示）により外装が形成される。キャビネットの底板１１上の一側部には圧縮機５が設置される。圧縮機５の側方には室外熱交換器４が底板１１上に設置されている。室外熱交換器４の前方にはファン（不図示）が配される。ファンは室外機２を覆うキャビネットに設けられた吸込口（不図示）から外気を取り込んで室外熱交換器４による熱交換を促進する。 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.
　底板１１は取付脚７を介して支持台８上に取り付けられる。これにより、底板１１と支持台８との間には空間が形成される。支持台８は中央部を開口した枠形状に形成されている（図３参照）。支持台８により室外機２が安定して支持される。 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.
　図３は室外機２の内部を底面側から見た斜視図である。図４は室外機２の内部を正面側から見た斜視図である。室外熱交換器４は冷媒管４ａに多数のフィン４ｃ（図３、図４にはフィン全体の外形を記載している）を固着して形成される。冷媒管４ａは水平方向の両端に形成される湾曲部４ｂを有して蛇行する。また、冷媒管４ａは平面視Ｌ字状に屈曲し、底板１１の周部に沿って配される。 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.
　図５は室外機２内部の底板１１を正面側から見た斜視図である。図５では室外熱交換器４の図示は省略している。底板１１は鋼板等の金属により形成される。底板１１の周部には排水口１５が設けられている。これにより、排水口１５は室外熱交換器４の直下に配される。 FIG. 5 is a perspective view of the bottom plate 11 inside the outdoor unit 2 as seen from the front side. In FIG. 5, 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.
　空気調和機１の除霜運転により室外熱交換器４で生じた除霜水は底板１１へ流下する。排水口１５から除霜水は室外機２の外部へ排水される。これにより、室外熱交換器４から流下した除霜水は迅速に排水される。 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.
　図６は図５のＢ部を拡大した斜視図である。排水口１５は半円形状に開口し、円弧状周縁部１５ａから下方に向かって傾斜する傾斜面１５ｂが形成されている。傾斜面１５ｂによって後述する導水部１５ｃ（図７参照）が形成される。円弧状周縁部１５ａに到達した除霜水は傾斜面１５ｂにより誘導されて排水口１５内に引き込まれる。これにより、除霜水が排水口１５上で表面張力によって留まることを防止でき、除霜水は円滑に底板１１から排水される。排水口１５および傾斜面１５ｂは絞り加工により形成され、傾斜面１５ｂは底板１１と一体に形成されている。 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.
　図７は図２のＡ部を拡大した正面図である。排出口１５から延出された傾斜面１５ｂは排水口１５の排水を導水する導水部１５ｃの底面を形成する。導水部１５ｃによって排水口１５から流出した除霜水Ｗが排水口１５の直下に対して外周方向に導かれる。これにより、排水口１５から流出した除霜水Ｗは排水口１５の直下には排水されず、排水口１５から排水された除霜水Ｗの凍結による排水口１５の閉塞を防止できる。 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.
　図７に示すように、排水口１５は底板１１の周部に設けられ、排水口１５の直下には支持台８の端部が位置している。そして、導水部１５ｃによって底板１１の外周側に除霜水Ｗを導いている。これにより、除霜水Ｗは支持台８の外側に向かって流下していく。したがって、支持台８上に除霜水Ｗが溜まることを防止でき、支持台８上に溜まった除霜水Ｗの凍結による排水口１５の閉塞を防止できる。 As shown in FIG. 7, 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. And the defrost water W is guide | induced to the outer peripheral side of the baseplate 11 by the water guide part 15c. Thereby, 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.
　尚、排水口１５は複数設けてもよい。排水口１５を複数設けることで、除霜水Ｗがより迅速に底板１１から排水される。また、排水口１５は底板１１に絞り加工を施すことによって形成されているので、排水口１５を複数設けても底板１１の強度の低下を防止できる。 It should be noted that 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.
　導水部１５ｃの底面は排水口１５の直下から水平方向に延びる平面から成ってもよい。この場合でも、導水部１５ｃは排水口１５から流出した除霜水Ｗを排水口１５の直下に対して外周方向に導くことができる。導水部１５ｃの底面が傾斜面１５ｂから成ると、より円滑に除霜水Ｗを排水できるとともに排水口１５の直下から一層離れた位置に排水できるので好ましい。 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.
　また、排水口１５は底板１１の周部以外に設けてもよい。例えば、底板１１の略中央部に設けてもよい。また、導水部１５ｃによって底板１１の内周側に除霜水Ｗを導いてもよい。すなわち、導水部１５ｃが排水口１５から流出した除霜水を排水口１５の直下に対して外周方向に導くことができれば、排水口１５から排水された除霜水Ｗの凍結による排水口１５の閉塞を防止できる。しかしながら、本実施形態のように、排水口１５を底板１１の周部に設けて導水部１５ｃによって底板１１の外周側に除霜水を導くとより好ましい。これにより、排水された除霜水が凍結して氷柱が成長しても底板１１に到達することがないため、排水口１５からの排水の凍結による排水口１５の閉塞を一層確実に防止できる。 Further, 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. However, it is more preferable that 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. As a result, even if the drained defrost water freezes and the ice column grows, it does not reach the bottom plate 11, so that the drainage port 15 can be more reliably prevented from being blocked by the drainage of the drainage from the drainage port 15.
　また、傾斜面１５ｂを底板１１とは別部材で構成してもよい。これにより、傾斜面１５ｂの設計の自由度が増加し、ひいては導水部１５ｃの設計の自由度が増加する。 Further, 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.
　また、排水口１５から導水部１５ｃの終端（出口）へ行くほど除霜水の流路が狭くなるように構成してもよい。例えば、絞り加工によって導水部１５ｃを絞ることで簡単に実現できる。これにより、導水部１５ｃの終端（出口）へ行くほど除霜水の流速が大きくなる。したがって、排水口１５の直下よりも一層離れた位置に除霜水を排水することができる。その結果、排水口１５から排水された除霜水Ｗの凍結による排水口１５の閉塞をより確実に防止できる。 Further, 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. For example, it can be easily realized by squeezing the water guide portion 15c by drawing. Thereby, the flow speed of defrost water becomes so large that it goes to the termination | terminus (exit) of the water conveyance part 15c. Therefore, the defrost water can be drained to a position further away from directly below the drain port 15. As a result, 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.
　なお、図２～図８には図示していないが、室内熱交換器６と膨張弁２１との間の冷媒管２０（図１参照）は室外熱交換器４と底板１１との間に配設される。これにより、暖房運転時の温度の高い冷媒が室外熱交換器４の下方を流通する。したがって、室外熱交換器４から流下した除霜水が室外熱交換器４の下部や底板１１上で凍結することを防止できる。このとき、冷媒管２０を平面視で室外熱交換器４に重なるように配置すると好ましい。これにより、スペースの節約が図れるとともに、一層確実に室外熱交換器４の下部の凍結を防止できる。 Although not shown in FIGS. 2 to 8, 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. Established. Thereby, the refrigerant | coolant with a high temperature at the time of heating operation distribute | circulates the downward direction of the outdoor heat exchanger 4. 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. At this time, it is preferable to arrange the refrigerant pipe 20 so as to overlap the outdoor heat exchanger 4 in plan view. Thereby, space can be saved and freezing of the lower part of the outdoor heat exchanger 4 can be prevented more reliably.
　また、室内熱交換器６と膨張弁２１との間の冷媒管２０を排水口１５近傍に配置してもよい。これにより、排水口１５での除霜水の凍結をより確実に防止できる。 Further, 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.
　さらに、図８に示すように、室内熱交換器６と膨張弁２１との間の冷媒管２０（図１参照）を室外熱交換器４の冷媒流入側又は冷媒流出側に接続されている冷媒管２３や分岐管２４が集中している箇所付近の下方に設けてもよい。これにより、暖房運転時の温度の高い冷媒が当該箇所付近を流通するので、冷媒管２３や分岐管２４に生じた結露水の凍結を防止できる。また、冷媒管２３の周囲に断熱材を巻き付けて結露を防止する必要がなくなるため、コストを削減して生産性が向上する。さらに、断熱材の巻き付け不良という問題が生じないため、信頼性が向上する。 Further, as shown in FIG. 8, 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. You may provide below the location near the location where the pipe | tube 23 and the branch pipe 24 are concentrated. Thereby, since the high temperature refrigerant | coolant at the time of heating operation distribute | circulates the said location vicinity, the freezing of the dew condensation water produced in the refrigerant | coolant pipe | tube 23 or the branch pipe 24 can be prevented. In addition, it is not necessary to wrap a heat insulating material around the refrigerant pipe 23 to prevent dew condensation, thereby reducing costs and improving productivity. Furthermore, since the problem of poor winding of the heat insulating material does not occur, the reliability is improved.
　本実施形態によると、排水口１５から流出した除霜水を排水口１５の直下に対して外周方向に導く導水部１５ｃを設けたので、除霜水は排水口１５の直下から離れた位置に排水される。従って、排水口１５からの排水の凍結による排水口１５の閉塞を防止できる。 According to the present embodiment, 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.
　また、導水部１５ｃの底面が下方に傾斜する傾斜面１５ｂから成るので、導水部１５ｃ内の除霜水を円滑に排水することができるとともに、除霜水を排水口１５の直下から一層離れた位置に排水できる。 In addition, since 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.
　また、排水口１５が底板１１の周部に設けられ、導水部１５ｃによって底板１１の外周側に除霜水を導くので、排水された除霜水が凍結して氷柱が成長しても底板１１に到達することがない。したがって、排水口１５からの排水の凍結による排水口１５の閉塞を一層確実に防止できる。 Moreover, since the drain port 15 is provided in the peripheral part of the baseplate 11, and defrost water is guide | induced to the outer peripheral side of the baseplate 11 by the water guide part 15c, even if the drained defrost water freezes and an ice column grows, the baseplate 11 Never reach. Therefore, the drainage port 15 can be more reliably prevented from being blocked by the freezing of the drainage from the drainage port 15.
　本発明によると、熱交換器の除霜水を排水する排水口を備える空気調和機の室外機に利用することができる。 According to the present invention, it can be used for an outdoor unit of an air conditioner having a drain port for draining defrost water of a heat exchanger.
　　　１　　空気調和機
　　　２　　室外機
　　　３　　室内機
　　　４　　室外熱交換器
　　　５　　圧縮機
　　　６　　室内熱交換器
　　　７　　取付脚
　　　８　　支持台
　　　９　　氷
　　１１　　底板
　　１５　　排水口
　　１５ａ　円弧状周縁部
　　１５ｂ　傾斜面
　　１５ｃ　導水部
　　２０　　冷媒管
　　２１　　膨張弁
　　２２　　四方弁 DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Outdoor unit 3 Indoor unit 4 Outdoor heat exchanger 5 Compressor 6 Indoor heat exchanger 7 Mounting leg 8 Support stand 9 Ice 11 Bottom plate 15 Drain outlet 15a Arc-shaped peripheral part 15b Inclined surface 15c Water guide part 20 Refrigerant tube 21 Expansion valve 22 Four-way valve

Claims (3)

  1. 　排水口を開口する底板上に熱交換器を設置し、前記熱交換器の除霜水を前記排水口から排水する空気調和機の室外機において、
    　前記排水口から流出した除霜水を前記排水口の直下に対して外周方向に導く導水部を設けたことを特徴とする空気調和機の室外機。     In the outdoor unit of the air conditioner that installs a heat exchanger on the bottom plate that opens the drain port and drains the defrost water of the heat exchanger from the drain port,
    An outdoor unit for an air conditioner, characterized in that a dewatering water that has flowed out of the drain outlet is provided with a water guide section that guides the defrost water in an outer peripheral direction directly below the drain outlet.
  2. 　前記導水部の底面が下方に傾斜する傾斜面から成ることを特徴とする請求項１に記載の空気調和機の室外機。 The outdoor unit for an air conditioner according to claim 1, wherein a bottom surface of the water guide portion is formed of an inclined surface inclined downward.
  3. 　前記排水口が前記底板の周部に設けられ、前記導水部によって前記底板の外周側に除霜水を導くことを特徴とする請求項１または請求項２に記載の空気調和機の室外機。 The outdoor unit for an air conditioner according to claim 1 or 2, wherein the drain port is provided in a peripheral portion of the bottom plate, and defrosted water is guided to an outer peripheral side of the bottom plate by the water guide portion.
PCT/JP2012/054744 2011-03-17 2012-02-27 Outdoor unit for air conditioner WO2012124457A1 (en)

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JP2011059781A JP2012193925A (en) 2011-03-17 2011-03-17 Outdoor unit for air conditioner

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WO2018100601A1 (en) * 2016-11-29 2018-06-07 三菱電機株式会社 Air conditioner outdoor unit, and air conditioner provided with same
EP3450860A1 (en) * 2017-09-01 2019-03-06 Daikin Europe N.V. Outdoor unit for an air source heat pump
JPWO2021070316A1 (en) * 2019-10-10 2021-04-15
JP2021081082A (en) * 2019-11-14 2021-05-27 ダイキン工業株式会社 Air conditioner

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JP6919697B2 (en) * 2019-11-14 2021-08-18 ダイキン工業株式会社 Air conditioner

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JPS5526371U (en) * 1978-08-08 1980-02-20
JPH03103931U (en) * 1990-02-08 1991-10-29
JPH1163571A (en) * 1997-08-20 1999-03-05 Fujitsu General Ltd Outdoor device of air conditioner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018100601A1 (en) * 2016-11-29 2018-06-07 三菱電機株式会社 Air conditioner outdoor unit, and air conditioner provided with same
JPWO2018100601A1 (en) * 2016-11-29 2019-06-27 三菱電機株式会社 Air conditioner outdoor unit and air conditioner equipped with the same
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 (en) * 2017-09-01 2019-03-06 Daikin Europe N.V. Outdoor unit for an air source heat pump
JPWO2021070316A1 (en) * 2019-10-10 2021-04-15
JP7170895B2 (en) 2019-10-10 2022-11-14 三菱電機株式会社 Air conditioner outdoor unit
JP2021081082A (en) * 2019-11-14 2021-05-27 ダイキン工業株式会社 Air conditioner
JP7048901B2 (en) 2019-11-14 2022-04-06 ダイキン工業株式会社 Air conditioner

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