WO2017056294A1 - Outdoor unit of air conditioning apparatus - Google Patents

Outdoor unit of air conditioning apparatus Download PDF

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Publication number
WO2017056294A1
WO2017056294A1 PCT/JP2015/077954 JP2015077954W WO2017056294A1 WO 2017056294 A1 WO2017056294 A1 WO 2017056294A1 JP 2015077954 W JP2015077954 W JP 2015077954W WO 2017056294 A1 WO2017056294 A1 WO 2017056294A1
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WO
WIPO (PCT)
Prior art keywords
heater
outdoor unit
heat exchanger
bottom plate
air conditioner
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Application number
PCT/JP2015/077954
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French (fr)
Japanese (ja)
Inventor
秀高 山内
寛之 陣内
久保野　俊行
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2015/077954 priority Critical patent/WO2017056294A1/en
Priority to JP2017542641A priority patent/JP6526218B2/en
Priority to CN201590000593.XU priority patent/CN206320866U/en
Publication of WO2017056294A1 publication Critical patent/WO2017056294A1/en

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    • 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

Definitions

  • the present invention relates to an outdoor unit of an air conditioner having a heater for preventing freezing.
  • the outdoor heat exchanger of the outdoor unit of the air conditioner functions as an evaporator during heating operation and absorbs heat from the outside air to exchange heat.
  • moisture in the air condenses on the outdoor heat exchanger.
  • the surface temperature of the outdoor heat exchanger may become below the freezing point of water, condensation may freeze, and the outdoor heat exchanger may be frosted.
  • the gaps between the fins constituting the outdoor heat exchanger may be blocked by frost.
  • the passage of outside air flowing between the fins of the outdoor heat exchanger becomes worse, and further, the heat exchange performance of the outdoor heat exchanger is deteriorated by reducing the heat exchange area.
  • the air conditioner is temporarily in a cooling operation state, and high-temperature and high-pressure refrigerant is circulated through the outdoor heat exchanger.
  • the melted drain water is allowed to flow to the bottom plate of the outdoor heat exchanger and drained to the outside from a drain hole provided in the bottom plate.
  • snow or rain water that has entered the interior of the outdoor unit from the back surface of the outdoor heat exchanger or the like is drained from a drain hole provided in the bottom plate as drain water.
  • drain water flowing on the bottom plate may freeze before being drained from the drain hole due to the low outside air temperature. Therefore, in order to efficiently drain a large amount of drain water generated during the defrosting operation, a heater for freezing prevention is disposed at the lower part of the outdoor heat exchanger, and the drain hole of the bottom plate is also disposed at the lower part of the outdoor heat exchanger. Try to provide it. And if the drain hole of the bottom plate is blocked by drain water due to freezing of drain water, it will not be possible to drain the drain water and cause a failure of the outdoor unit.Therefore, a freezing prevention heater is placed near the drain hole of the bottom plate. ing.
  • the present invention was made against the background of the above problems, and it is possible to obtain an outdoor unit of an air conditioner in which a human hand or the like does not contact the heater from the outside of the outdoor unit while expanding the diameter of the drain hole. Objective.
  • An outdoor unit of an air conditioner includes a bottom plate provided with a drain hole, a heater provided on the bottom plate so as to partially overlap the projection surface of the drain hole, and a part of the outer periphery of the heater
  • the heater fixture is configured such that one end protrudes to a position lower than the lower end of the heater, and the one end is inserted through the drainage hole.
  • FIG. 1 It is a general
  • FIG. 6 is a schematic sectional view showing an example of a ZZ section in FIG. 5.
  • FIG. 6 is a schematic cross-sectional view showing another example of the ZZ cross section of FIG. 5.
  • FIG. 6 is a schematic cross-sectional view showing another example of the ZZ cross section of FIG. 5.
  • FIG. 1 is a schematic exploded perspective view of an outdoor unit for an air-conditioning apparatus according to Embodiment 1 of the present invention.
  • an outdoor unit 100 is surrounded by a top panel 3 constituting a ceiling, a front panel 1 constituting a front, a side panel 2 constituting a side, a bottom plate 8 constituting a bottom, and the like.
  • the bottom plate 8 is provided with legs 17 for fixing the outdoor unit 100 to the installation location.
  • the interior of the outdoor unit 100 is partitioned by a partition plate 4 into a blower chamber 4a and a machine chamber 4b.
  • the machine room 4b is provided with an electrical product 15 on which a compressor 13, a refrigerant pipe 14, a control device and the like are mounted.
  • the blower chamber 4a is provided with an outdoor heat exchanger 5 and a motor support 12 that holds a motor 10 to which a propeller fan 11 is attached. Further, the compressor 13, the outdoor heat exchanger 5, the motor support 12, and the like installed inside the outdoor unit 100 are held on the bottom plate 8.
  • the bottom plate 8 is provided with a freezing prevention heater 6 which will be described later.
  • the anti-freezing heater 6 corresponds to the “heater” in the present invention.
  • the compressor 13 sucks the refrigerant, compresses it into a high temperature and high pressure state, and conveys it to the refrigerant circuit via the refrigerant pipe 14.
  • the electrical product 15 accommodates a control device for controlling the operation of the outdoor unit 100 and supplies power to each component.
  • the outdoor heat exchanger 5 performs heat exchange between the outside air and the refrigerant, and functions as an evaporator during heating operation and as a condenser during cooling operation.
  • the outdoor heat exchanger 5 includes, for example, a heat transfer tube that allows the refrigerant to pass therethrough, and a fin for increasing the heat transfer area between the refrigerant flowing through the heat transfer tube and the outside air, It is formed in a so-called L shape having a corner portion 5b and a back side flat surface portion 5c.
  • the outdoor heat exchanger 5 may be formed in a flat plate shape or may be formed in a so-called U shape having curved regions at both ends. It may be what was done.
  • the propeller fan 11 is rotationally driven by the motor 10 and blows air to the outdoor heat exchanger 5.
  • air flows into the outdoor unit 100 through the side surface plane portions 5a, the corner portions 5b, and the back surface side plane portion 5c of the outdoor heat exchanger 5, and the air flows into the propeller. It passes through the fan 11 and flows out to the front of the outdoor unit 100.
  • the motor 10 is connected to the propeller fan 11 via a rotating shaft, and drives the propeller fan 11 to rotate based on a command from the electrical product 15.
  • the motor 10 is held by a motor support 12.
  • the motor support 12 has a support column extending in the vertical direction, and the upper side is connected to the upper part of the outdoor heat exchanger 5 and the lower side is fixed to the bottom plate 8 with bolts or the like.
  • the refrigerant cooled by the outdoor heat exchanger 5 flows out of the outdoor heat exchanger 5 and is then sent to a decompression device (not shown).
  • the refrigerant sent to the decompression device is squeezed and decompressed by the decompression device.
  • the decompressed refrigerant flows into the heat exchanger of the indoor unit.
  • the refrigerant that has flowed into the heat exchanger of the indoor unit cools the air supplied from an indoor fan (not shown).
  • the cooled air is sent to an air-conditioning target area such as a room to perform a cooling operation.
  • the refrigerant that has cooled the air flows out of the heat exchanger of the indoor unit and is then sucked into the compressor 13 again.
  • the refrigerant sent from the indoor unit (not shown) is sucked into the compressor 13.
  • the refrigerant sucked into the compressor 13 is compressed by the compressor 13 and then discharged.
  • the refrigerant discharged from the compressor 13 passes through the refrigerant pipe 14 and is sent to the heat exchanger of the indoor unit.
  • the heat exchanger of the indoor unit functions as a condenser, so that the refrigerant flowing into the heat exchanger of the indoor unit is cooled by the indoor air supplied from the indoor fan, and the indoor unit
  • the air that has passed through the heat exchanger is heated by exchanging heat with the refrigerant flowing through the heat exchanger of the indoor unit.
  • the heated air is sent to an air-conditioning target area such as a room to perform a heating operation.
  • the refrigerant cooled by the heat exchanger of the indoor unit flows out of the heat exchanger of the indoor unit and is then sent to a decompression device (not shown).
  • the refrigerant sent to the decompression device is squeezed and decompressed by the decompression device.
  • the decompressed refrigerant flows into the outdoor heat exchanger 5.
  • the refrigerant flowing into the outdoor heat exchanger 5 cools the air supplied from the propeller fan 11.
  • the refrigerant that has cooled the air flows out of the heat exchanger of the indoor unit and is then sucked into the compressor 13 again.
  • the heating operation when the pressure saturation temperature of the refrigerant in the outdoor heat exchanger 5 is not more than the dew point temperature of the outside air and not more than the freezing point temperature of water, the moisture in the outside air is cooled by the outdoor heat exchanger 5. As a result, frost is generated in the heat radiation fins of the outdoor heat exchanger 5. Due to this frosting phenomenon, the amount of air passing through the outdoor heat exchanger 5 is reduced, so that the heat exchange performance of the outdoor heat exchanger 5 is reduced. Therefore, the heating operation is temporarily stopped, and the defrosting operation is performed. It is necessary to thaw frost. A large amount of drain water is generated when the frost formed on the outdoor heat exchanger 5 is melted by this defrosting operation. In order to drain the drain water generated by the defrosting operation or the like in this manner, the bottom plate 8 is provided with a drain hole 8a described later in FIG.
  • FIG. 2 is a schematic state diagram when the heater for freezing prevention of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention is attached.
  • the bottom plate 8 is provided with an outdoor heat exchanger 5, a freezing prevention heater 6, a drain hole 8 a, and a heater fixture 7.
  • the antifreezing heater 6 is a gap between the bottom plate 8 and the outdoor heat exchanger 5 and is disposed below the outdoor heat exchanger 5.
  • the bottom plate 8 has an inclination, and the drain hole 8 a is provided on the back side of the central portion of the bottom plate 8 and is disposed at the lowest position in the bottom plate 8.
  • the antifreezing heater 6 is disposed along a part of the edge of the drain hole 8a, and further, the drain path of the bottom plate 8 in order to melt frost generated in the gap between the bottom plate 8 and the outdoor heat exchanger 5. It has a shape that crawls up.
  • FIG. 3 is a schematic enlarged view when the anti-freezing heater of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention is attached.
  • the antifreezing heater 6 is provided so as to surround the drain hole 8a.
  • the antifreezing heater 6 is fixed by a heater fixture 7, and the heater fixture 7 is fixed to the bottom plate 8 by screws 18.
  • FIG. 4 is a perspective view of a heater fixture attached to the outdoor unit of the air conditioner according to Embodiment 1 of the present invention.
  • the heater fixture 7 has a frame shape, that is, a hollow rectangular shape, and is provided with screw holes 19 into which screws 18 are inserted at both ends.
  • the heater fixture 7 includes a heater covering piece 7 c that protrudes downward on the inner peripheral side of the hollow rectangular shape of the heater fixture 7.
  • the heater covering piece 7c will be described later with reference to FIG.
  • the heater covering piece 7c corresponds to “one end portion” in the present invention.
  • FIG. 5 is a schematic top view when the anti-freezing heater of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention is attached.
  • FIG. 6 is a schematic cross-sectional view showing an example of the ZZ cross section of FIG. As shown in FIG. 5 and FIG. 6, when the diameter of the drain hole 8 a is increased and the shape of the anti-freezing heater 6 is not changed with the anti-freezing heater 6 disposed below the outdoor heat exchanger 5. A part of the antifreezing heater 6 protrudes into the drain hole 8a. That is, it arrange
  • the heater fixture 7 is reverse J-shaped in cross-section and the backs are facing each other, and covers a part of the outer periphery of the anti-freezing heater 6.
  • the heater covering piece 7 c that protrudes downward in the vertical direction from the inner peripheral side of the hollow rectangular heater fixture 7 is positioned on the projection surface of the drain hole 8 a of the bottom plate 8.
  • the heater covering piece lower end portion 7a constituting the tip of the heater covering piece 7c is disposed at a position lower than the antifreezing heater lower end portion 6a that is a contact point between the antifreezing heater 6 and the bottom plate 8, and the drain hole 8a. It will be in the state inserted in.
  • the heater fixing tool 7 fixes the antifreezing heater 6 so as to cover a part of the outer periphery of the antifreezing heater 6.
  • the heater covering piece lower end portion 7 a is preferably provided within the range of the upper surface and the lower surface of the bottom plate 8, that is, within the thickness range of the bottom plate 8. By doing so, it is possible to prevent a human finger from being caught by the heater covering piece lower end portion 7 a and the bottom plate 8 and coming into contact with the high-temperature antifreezing heater 6.
  • the distance of the gap 9 between the bottom plate 8 and the heater covering piece lower end portion 7a is increased.
  • the distance of the gap 9 is set to a range where the lower end portion 6a of the antifreezing heater and the bottom plate 8 can come into contact with each other, so that the antifreezing heater 6 can be fixed to the bottom plate 8.
  • the gap 9 is extremely wide, a human finger or the like may enter through the gap 9 and touch the antifreezing heater 6, so the distance of the gap 9 is set to be less than 12 (mm), for example.
  • the bottom plate 8 provided with the drain hole 8a and the antifreezing heater 6 provided on the bottom plate 8 so as to partially overlap the projection surface of the drain hole 8a.
  • a heater fixture 7 that covers a part of the outer periphery of the anti-freezing heater 6 and fixes the anti-freezing heater 6.
  • the heater fixing device 7 has the tip of the heater covering piece 7 c at the tip of the anti-freezing heater. It protrudes to a position lower than the lower end 6a, and the tip of the heater covering piece 7c is inserted into the drain hole 8a.
  • the distance between the heater covering piece lower end 7a and the bottom plate 8 is less than 12 mm.
  • the heater fixture 7 has a reverse J-shape in cross section. By doing in this way, since a part of outer periphery of the antifreezing heater 6 can be covered with the heater fixing tool 7, the antifreezing heater 6 can be fixed more firmly.
  • Embodiment 2 Since the basic configuration of the outdoor unit of the air conditioner in the second embodiment is the same as that of the outdoor unit of the air conditioner in the first embodiment, the present embodiment will be mainly focused on the differences from the first embodiment. Form 2 will be described. The difference between the first embodiment and the second embodiment is that the lower end portion of the heater covering piece is bent.
  • FIG. 7 is a schematic sectional view showing another example of the ZZ section of FIG.
  • the heater fixture 7 ⁇ / b> A has a reverse L-shape in cross section.
  • the heater fixture 7A has a heater covering piece 7c that protrudes downward in the vertical direction on the inner peripheral side.
  • the heater covering piece lower part 7b which is the tip of the heater covering piece 7c, is bent so as to be wound in the direction in which the antifreezing heater 6 is present. In this way, even if the diameter of the drain hole 8a is widened, the heater covering piece lower portion 7b is bent, so that the distance of the gap 9 can be reduced, and a finger or the like can be prevented from freezing via the gap 9. 6 can be prevented.
  • the tip of the heater covering piece 7 c is bent toward the antifreezing heater 6.
  • the outdoor unit 100 of the air conditioner in which a finger etc. do not contact the antifreezing heater 6 even if the diameter of the drain hole 8a is widened can be obtained.
  • Embodiment 3 Since the basic configuration of the outdoor unit of the air conditioner in the third embodiment is the same as that of the outdoor unit of the air conditioner in the first embodiment, the present embodiment will be mainly described below with respect to differences from the first embodiment. Form 3 will be described. The difference between the first embodiment and the third embodiment is that the lower end portion of the heater covering piece is subjected to hemming bending or the like.
  • FIG. 8 is a schematic cross-sectional view showing another example of the ZZ cross section of FIG.
  • the heater fixture 7B has a heater covering piece 7c that protrudes downward in the vertical direction on the inner peripheral side.
  • the heater covering piece lower portion 7d which is the tip of the heater covering piece 7c of the heater fixture 7B, corresponds to a place touched by a finger. Therefore, in order to protect the heater covering piece lower portion 7d, the heater covering piece lower portion 7d is subjected to contact folding processing, that is, hemming bending processing or painting.
  • the tip of the heater covering piece 7c is configured to be hemmed or painted.
  • the outdoor unit 100 of the air conditioner which can protect the sharp front-end

Abstract

The present invention is equipped with: a bottom plate that is provided with a drainage hole; a heater that is provided on the bottom plate such that a part of the heater overlaps the projection surface of the drainage hole; and a heater fixture, which covers at least a part of an outer periphery of the heater, and which fixes the heater. In the heater fixture, a leading end portion of one end section protrudes to a position lower than a lower end portion of the heater, and the leading end portion of the one end section is inserted into the drainage hole.

Description

空気調和機の室外機Air conditioner outdoor unit
　本発明は、凍結防止用のヒーターを有する空気調和機の室外機に関するものである。 The present invention relates to an outdoor unit of an air conditioner having a heater for preventing freezing.
　空気調和機の室外機が有する室外熱交換器は、暖房運転時に蒸発器として機能して外気から熱を吸収して熱交換を行う。その際、室外熱交換器の表面温度が露点温度以下の場合、空気中の水分が室外熱交換器に結露する。そして、冬季の場合、室外熱交換器の表面温度が水の凝固点以下となることがあり、結露が凍結し、室外熱交換器に着霜することがある。この際、室外熱交換器を構成するフィン間の隙間が霜で塞がれる可能性がある。その結果、室外熱交換器のフィン間を流れる外気の通りが悪くなり、さらに、熱交換面積が減少することで室外熱交換器の熱交換の性能が悪化する。 The outdoor heat exchanger of the outdoor unit of the air conditioner functions as an evaporator during heating operation and absorbs heat from the outside air to exchange heat. At that time, when the surface temperature of the outdoor heat exchanger is equal to or lower than the dew point temperature, moisture in the air condenses on the outdoor heat exchanger. In the winter season, the surface temperature of the outdoor heat exchanger may become below the freezing point of water, condensation may freeze, and the outdoor heat exchanger may be frosted. At this time, the gaps between the fins constituting the outdoor heat exchanger may be blocked by frost. As a result, the passage of outside air flowing between the fins of the outdoor heat exchanger becomes worse, and further, the heat exchange performance of the outdoor heat exchanger is deteriorated by reducing the heat exchange area.
　上記の室外熱交換器の熱交換の性能悪化への対策として、一時的に空気調和機を冷房運転状態にして高温高圧の冷媒を室外熱交換器に流通させることで、室外熱交換器に着霜した霜を融かす方法がある。そして、融かしたドレン水を室外熱交換器の底板に流して、底板に設けられている排水穴から外部へ排水させている。また、室外熱交換器の背面などから室外機の内部に侵入した雪又は雨水も、ドレン水として底板に設けられている排水穴から排水させている。 As countermeasures against the deterioration of the heat exchange performance of the outdoor heat exchanger described above, the air conditioner is temporarily in a cooling operation state, and high-temperature and high-pressure refrigerant is circulated through the outdoor heat exchanger. There is a method of melting frost. Then, the melted drain water is allowed to flow to the bottom plate of the outdoor heat exchanger and drained to the outside from a drain hole provided in the bottom plate. Also, snow or rain water that has entered the interior of the outdoor unit from the back surface of the outdoor heat exchanger or the like is drained from a drain hole provided in the bottom plate as drain water.
　しかし、寒冷地の場合、外気の温度の低さによってはドレン水が排水穴から外部へ排水される前に底板上で凍結する可能性がある。そこで、ドレン水が底板上で凍結することを防ぐために、凍結防止用のヒーターを底板上に配置し、ヒーター固定具によってヒーターを固定する空気調和機の室外機が提案されている（例えば特許文献１参照）。 However, in cold regions, depending on the temperature of the outside air, drain water may freeze on the bottom plate before being drained from the drain hole to the outside. Therefore, in order to prevent the drain water from freezing on the bottom plate, an outdoor unit of an air conditioner has been proposed in which a heater for freezing is arranged on the bottom plate and the heater is fixed by a heater fixture (for example, Patent Documents). 1).
特開２０１１－５２９４１号公報JP 2011-52941 A
　寒冷地の場合、底板上を流れるドレン水は、外気温度の低さが原因となって、排水穴から排水される前に凍結する可能性がある。そこで、除霜運転時に発生する大量のドレン水を効率的に排水させるために、凍結防止用のヒーターを室外熱交換器の下部に配置させると共に、底板の排水穴も室外熱交換器の下部に設けるようにする。そして、ドレン水の凍結により底板の排水穴がドレン水によって塞がると、ドレン水を排水できなくなり、室外機の故障の原因となるため、底板の排水穴の近傍に凍結防止用のヒーターを配置させている。 In cold regions, drain water flowing on the bottom plate may freeze before being drained from the drain hole due to the low outside air temperature. Therefore, in order to efficiently drain a large amount of drain water generated during the defrosting operation, a heater for freezing prevention is disposed at the lower part of the outdoor heat exchanger, and the drain hole of the bottom plate is also disposed at the lower part of the outdoor heat exchanger. Try to provide it. And if the drain hole of the bottom plate is blocked by drain water due to freezing of drain water, it will not be possible to drain the drain water and cause a failure of the outdoor unit.Therefore, a freezing prevention heater is placed near the drain hole of the bottom plate. ing.
　特許文献１に記載の空気調和機の室外機において、ドレン水の凍結による排水穴の閉塞防止対策として、凍結防止用のヒーターを設置することに加えて、排水穴の径を拡大させる方法がある。しかしながら、この方法だと底板の排水穴から凍結防止用のヒーターが露出してしまい、室外機の外部から人間の手などが高温のヒーターに接触する問題点があった。一方で、ヒーターが底板の排水穴から露出しないようにヒーターを、径を拡大した排水穴に沿って室外熱交換器から離して配置すると、ヒーターの熱が室外熱交換器に伝わらずに、室外熱交換器の下部から流出するドレン水が凍結する問題点があった。 In the outdoor unit of the air conditioner described in Patent Document 1, in addition to installing a heater for preventing freezing, there is a method of expanding the diameter of the drained hole as a measure for preventing the drainage hole from being blocked by freezing of drain water. . However, this method has a problem that the freezing prevention heater is exposed from the drain hole of the bottom plate, and a human hand or the like comes into contact with the high-temperature heater from the outside of the outdoor unit. On the other hand, if the heater is placed away from the outdoor heat exchanger along the enlarged drainage hole so that the heater is not exposed from the drainage hole on the bottom plate, the heat from the heater is not transferred to the outdoor heat exchanger, There was a problem that the drain water flowing out from the lower part of the heat exchanger was frozen.
　本発明は、上記のような課題を背景になされたものであり、排水穴の径を拡大しつつ室外機の外部から人間の手などがヒーターに接触しない空気調和機の室外機を得ることを目的とする。 The present invention was made against the background of the above problems, and it is possible to obtain an outdoor unit of an air conditioner in which a human hand or the like does not contact the heater from the outside of the outdoor unit while expanding the diameter of the drain hole. Objective.
　本発明に係る空気調和機の室外機は、排水穴が設けられた底板と、前記排水穴の投影面に一部が重複するように底板に設けられたヒーターと、前記ヒーターの外周の一部を覆い、前記ヒーターを固定するヒーター固定具と、を備え、前記ヒーター固定具は、一方の端部の先端部が前記ヒーターの下端部よりも低い位置まで突出し、前記一方の端部の先端部は、前記排水穴に挿通されているものである。 An outdoor unit of an air conditioner according to the present invention includes a bottom plate provided with a drain hole, a heater provided on the bottom plate so as to partially overlap the projection surface of the drain hole, and a part of the outer periphery of the heater A heater fixture that fixes the heater, and the heater fixture projects to a position where the tip of one end is lower than the lower end of the heater, and the tip of the one end Is inserted through the drainage hole.
　本発明によれば、ヒーター固定具は、一方の端部がヒーターの下端部よりも低い位置まで突出し、一方の端部は、排水穴に挿通されているように構成する。このようにすることで、排水穴の径を拡大しつつ室外機の外部から手などがヒーターに接触しない空気調和機の室外機を得ることができる。 According to the present invention, the heater fixture is configured such that one end protrudes to a position lower than the lower end of the heater, and the one end is inserted through the drainage hole. By doing in this way, the outdoor unit of the air conditioner from which the hand etc. do not contact a heater from the exterior of an outdoor unit can be obtained, expanding the diameter of a drain hole.
本発明の実施の形態１に係る空気調和機の室外機の概略分解斜視図である。It is a general | schematic disassembled perspective view of the outdoor unit of the air conditioner which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る空気調和機の室外機の凍結防止用ヒーターを取り付けた際の概略状態図である。It is a schematic state figure at the time of attaching the antifreezing heater of the outdoor unit of the air conditioner concerning Embodiment 1 of this invention. 本発明の実施の形態１に係る空気調和機の室外機の凍結防止用ヒーターを取り付けた際の概略拡大図である。It is a schematic enlarged view at the time of attaching the anti-freezing heater of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention. 本発明の実施の形態１に係る空気調和機の室外機に取り付けられるヒーター固定具の斜視図である。It is a perspective view of the heater fixture attached to the outdoor unit of the air conditioner concerning Embodiment 1 of the present invention. 本発明の実施の形態１に係る空気調和機の室外機の凍結防止用ヒーターを取り付けた際の概略上面視図である。It is an outline top view at the time of attaching the anti-freezing heater of the outdoor unit of the air conditioner concerning Embodiment 1 of the present invention. 図５のＺ－Ｚ断面の一例を示す概略断面図である。FIG. 6 is a schematic sectional view showing an example of a ZZ section in FIG. 5. 図５のＺ－Ｚ断面の他の一例を示す概略断面図である。FIG. 6 is a schematic cross-sectional view showing another example of the ZZ cross section of FIG. 5. 図５のＺ－Ｚ断面の他の一例を示す概略断面図である。FIG. 6 is a schematic cross-sectional view showing another example of the ZZ cross section of FIG. 5.
　以下、本発明の空気調和機の室外機の実施の形態について、図面を参照して説明する。なお、図面の形態は一例であり、本発明を限定するものではない。また、各図において同一の符号を付したものは、同一の又はこれに相当するものであり、これは明細書の全文において共通している。さらに、以下の図面では各構成部材の大きさの関係が実際のものとは異なる場合がある。 Hereinafter, embodiments of an outdoor unit of an air conditioner according to the present invention will be described with reference to the drawings. In addition, the form of drawing is an example and does not limit this invention. Moreover, what attached | subjected the same code | symbol in each figure is the same or it corresponds, and this is common in the whole text of a specification. Furthermore, in the following drawings, the relationship between the sizes of the constituent members may be different from the actual one.
実施の形態１．
［空気調和機の室外機の構成］
　図１は、本発明の実施の形態１に係る空気調和機の室外機の概略分解斜視図である。図１に示されるように、室外機１００は、天井を構成する天面パネル３、正面を構成する前面パネル１、側面を構成する側面パネル２、底面を構成する底板８等によって囲われたものであって、底板８には室外機１００を設置場所に固定するための脚部１７が設けられている。 Embodiment 1 FIG.
[Configuration of outdoor unit of air conditioner]
FIG. 1 is a schematic exploded perspective view of an outdoor unit for an air-conditioning apparatus according to Embodiment 1 of the present invention. As shown in FIG. 1, an outdoor unit 100 is surrounded by a top panel 3 constituting a ceiling, a front panel 1 constituting a front, a side panel 2 constituting a side, a bottom plate 8 constituting a bottom, and the like. The bottom plate 8 is provided with legs 17 for fixing the outdoor unit 100 to the installation location.
　室外機１００の内部は仕切り板４により送風機室４ａと機械室４ｂとに仕切られている。機械室４ｂには、圧縮機１３、冷媒配管１４、制御装置などが搭載されている電気品１５等が設けられている。送風機室４ａには、室外熱交換器５と、プロペラファン１１が取り付けられたモーター１０を保持するモーターサポート１２が設けられている。また、室外機１００の内部に設置される圧縮機１３、室外熱交換器５、モーターサポート１２等は、底板８の上に保持されている。また、底板８には、後述する凍結防止用ヒーター６が設けられている。なお、凍結防止用ヒーター６は本発明における「ヒーター」に相当する。 The interior of the outdoor unit 100 is partitioned by a partition plate 4 into a blower chamber 4a and a machine chamber 4b. The machine room 4b is provided with an electrical product 15 on which a compressor 13, a refrigerant pipe 14, a control device and the like are mounted. The blower chamber 4a is provided with an outdoor heat exchanger 5 and a motor support 12 that holds a motor 10 to which a propeller fan 11 is attached. Further, the compressor 13, the outdoor heat exchanger 5, the motor support 12, and the like installed inside the outdoor unit 100 are held on the bottom plate 8. The bottom plate 8 is provided with a freezing prevention heater 6 which will be described later. The anti-freezing heater 6 corresponds to the “heater” in the present invention.
　圧縮機１３は、冷媒を吸引し高温高圧の状態に圧縮して冷媒配管１４を介して冷媒回路に搬送するものである。電気品１５は、室外機１００の動作を制御するための制御装置等を収容し、各部品への電力供給等を行うものである。 The compressor 13 sucks the refrigerant, compresses it into a high temperature and high pressure state, and conveys it to the refrigerant circuit via the refrigerant pipe 14. The electrical product 15 accommodates a control device for controlling the operation of the outdoor unit 100 and supplies power to each component.
　室外熱交換器５は、外気と冷媒との熱交換を行うものであって、暖房運転時には蒸発器として機能し、冷房運転時には凝縮器として機能する。また、室外熱交換器５は、たとえば冷媒を通過させる伝熱管と、伝熱管を流れる冷媒と外気との間の伝熱面積を大きくするためのフィンとを備えており、側面側平面部５ａと角部５ｂと背面側平面部５ｃとを有するいわゆるＬ字形状に形成されている。なお、室外熱交換器５がＬ字状に形成された場合について例示しているが、平板状に形成されたものであってもよいし、両端に曲面領域を備えたいわゆるＵ字状に形成されたものであってもよい。 The outdoor heat exchanger 5 performs heat exchange between the outside air and the refrigerant, and functions as an evaporator during heating operation and as a condenser during cooling operation. The outdoor heat exchanger 5 includes, for example, a heat transfer tube that allows the refrigerant to pass therethrough, and a fin for increasing the heat transfer area between the refrigerant flowing through the heat transfer tube and the outside air, It is formed in a so-called L shape having a corner portion 5b and a back side flat surface portion 5c. In addition, although the case where the outdoor heat exchanger 5 is formed in an L shape is illustrated, it may be formed in a flat plate shape or may be formed in a so-called U shape having curved regions at both ends. It may be what was done.
　プロペラファン１１は、モーター１０によって回転駆動され、室外熱交換器５に空気を送風するものである。プロペラファン１１が動作することにより、室外熱交換器５の側面側平面部５ａ、角部５ｂ、背面側平面部５ｃを通過して室外機１００の内部に空気が流入し、その空気は、プロペラファン１１を通過し、室外機１００の前方に流出する。 The propeller fan 11 is rotationally driven by the motor 10 and blows air to the outdoor heat exchanger 5. When the propeller fan 11 operates, air flows into the outdoor unit 100 through the side surface plane portions 5a, the corner portions 5b, and the back surface side plane portion 5c of the outdoor heat exchanger 5, and the air flows into the propeller. It passes through the fan 11 and flows out to the front of the outdoor unit 100.
　モーター１０は、回転軸を介してプロペラファン１１に連結しており、電気品１５からの指令に基づいてプロペラファン１１を回転駆動するものである。また、モーター１０は、モーターサポート１２に保持されている。モーターサポート１２は、鉛直方向に延びる支柱を有するものであって、上部側が室外熱交換器５の上部に接続されており、下部側がボルト等により底板８に固定されている。 The motor 10 is connected to the propeller fan 11 via a rotating shaft, and drives the propeller fan 11 to rotate based on a command from the electrical product 15. The motor 10 is held by a motor support 12. The motor support 12 has a support column extending in the vertical direction, and the upper side is connected to the upper part of the outdoor heat exchanger 5 and the lower side is fixed to the bottom plate 8 with bolts or the like.
［室外機１００の動作］
　冷房運転時において、図示省略の室内機から送られた冷媒は、圧縮機１３に吸入される。圧縮機１３に吸入された冷媒は、圧縮機１３によって圧縮された後、吐出される。圧縮機１３から吐出された冷媒は、冷媒配管１４を通り、室外熱交換器５に送られる。室外熱交換器５には、プロペラファン１１によって空気が供給されている。例えば、冷房運転中においては、室外熱交換器５は凝縮器として機能するので、室外熱交換器５内に流入した冷媒は、プロペラファン１１からの空気によって冷却され、室外熱交換器５を通過した空気は、室外熱交換器５を流れる冷媒と熱交換することで加熱される。 [Operation of outdoor unit 100]
During the cooling operation, the refrigerant sent from an indoor unit (not shown) is sucked into the compressor 13. The refrigerant sucked into the compressor 13 is compressed by the compressor 13 and then discharged. The refrigerant discharged from the compressor 13 passes through the refrigerant pipe 14 and is sent to the outdoor heat exchanger 5. Air is supplied to the outdoor heat exchanger 5 by a propeller fan 11. For example, during the cooling operation, the outdoor heat exchanger 5 functions as a condenser, so that the refrigerant flowing into the outdoor heat exchanger 5 is cooled by the air from the propeller fan 11 and passes through the outdoor heat exchanger 5. The air thus heated is heated by exchanging heat with the refrigerant flowing through the outdoor heat exchanger 5.
　室外熱交換器５で冷却された冷媒は、室外熱交換器５から流出した後、図示省略の減圧装置に送られる。減圧装置に送られた冷媒は、減圧装置で絞られて減圧される。減圧された冷媒は、室内機の熱交換器に流入する。室内機の熱交換器に流入した冷媒は、図示省略の室内ファンから供給される空気を冷却する。この冷却した空気が、室内等の空調対象域に送られることで冷房運転が実行される。空気を冷却した冷媒は、室内機の熱交換器を流出した後、再度圧縮機１３に吸入される。 The refrigerant cooled by the outdoor heat exchanger 5 flows out of the outdoor heat exchanger 5 and is then sent to a decompression device (not shown). The refrigerant sent to the decompression device is squeezed and decompressed by the decompression device. The decompressed refrigerant flows into the heat exchanger of the indoor unit. The refrigerant that has flowed into the heat exchanger of the indoor unit cools the air supplied from an indoor fan (not shown). The cooled air is sent to an air-conditioning target area such as a room to perform a cooling operation. The refrigerant that has cooled the air flows out of the heat exchanger of the indoor unit and is then sucked into the compressor 13 again.
　一方で、暖房運転時において、図示省略の室内機から送られた冷媒は、圧縮機１３に吸入される。圧縮機１３に吸入された冷媒は、圧縮機１３によって圧縮された後、吐出される。圧縮機１３から吐出された冷媒は、冷媒配管１４を通り、室内機の熱交換器に送られる。例えば、暖房運転中においては、室内機の熱交換器は凝縮器として機能するので、室内機の熱交換器内に流入した冷媒は、室内ファンから供給される室内の空気によって冷却され、室内機の熱交換器を通過した空気は、室内機の熱交換器を流れる冷媒と熱交換することで加熱される。この加熱した空気が、室内等の空調対象域に送られることで暖房運転が実行される。 On the other hand, during the heating operation, the refrigerant sent from the indoor unit (not shown) is sucked into the compressor 13. The refrigerant sucked into the compressor 13 is compressed by the compressor 13 and then discharged. The refrigerant discharged from the compressor 13 passes through the refrigerant pipe 14 and is sent to the heat exchanger of the indoor unit. For example, during the heating operation, the heat exchanger of the indoor unit functions as a condenser, so that the refrigerant flowing into the heat exchanger of the indoor unit is cooled by the indoor air supplied from the indoor fan, and the indoor unit The air that has passed through the heat exchanger is heated by exchanging heat with the refrigerant flowing through the heat exchanger of the indoor unit. The heated air is sent to an air-conditioning target area such as a room to perform a heating operation.
　室内機の熱交換器で冷却された冷媒は、室内機の熱交換器から流出した後、図示省略の減圧装置に送られる。減圧装置に送られた冷媒は、減圧装置で絞られて減圧される。減圧された冷媒は、室外熱交換器５に流入する。室外熱交換器５に流入した冷媒は、プロペラファン１１から供給される空気を冷却する。空気を冷却した冷媒は、室内機の熱交換器を流出した後、再度圧縮機１３に吸入される。 The refrigerant cooled by the heat exchanger of the indoor unit flows out of the heat exchanger of the indoor unit and is then sent to a decompression device (not shown). The refrigerant sent to the decompression device is squeezed and decompressed by the decompression device. The decompressed refrigerant flows into the outdoor heat exchanger 5. The refrigerant flowing into the outdoor heat exchanger 5 cools the air supplied from the propeller fan 11. The refrigerant that has cooled the air flows out of the heat exchanger of the indoor unit and is then sucked into the compressor 13 again.
　暖房運転の際、室外熱交換器５の冷媒の圧力飽和温度が、外気の露点温度以下であり、かつ、水の凝固点温度以下であった場合、外気中の水分が室外熱交換器５により冷却されることで、室外熱交換器５の放熱フィンに霜が生じてしまう。この着霜現象により、室外熱交換器５を通過する風量が低下することで、室外熱交換器５の熱交換性能が低下してしまうため、暖房運転を一時的に停止し、除霜運転により霜を融解する必要がある。そして、この除霜運転により室外熱交換器５に着霜した霜が融解することにより大量のドレン水が発生する。このように除霜運転等により発生したドレン水を排水するために底板８には、図２以降で後述する排水穴８ａが設けられている。 During the heating operation, when the pressure saturation temperature of the refrigerant in the outdoor heat exchanger 5 is not more than the dew point temperature of the outside air and not more than the freezing point temperature of water, the moisture in the outside air is cooled by the outdoor heat exchanger 5. As a result, frost is generated in the heat radiation fins of the outdoor heat exchanger 5. Due to this frosting phenomenon, the amount of air passing through the outdoor heat exchanger 5 is reduced, so that the heat exchange performance of the outdoor heat exchanger 5 is reduced. Therefore, the heating operation is temporarily stopped, and the defrosting operation is performed. It is necessary to thaw frost. A large amount of drain water is generated when the frost formed on the outdoor heat exchanger 5 is melted by this defrosting operation. In order to drain the drain water generated by the defrosting operation or the like in this manner, the bottom plate 8 is provided with a drain hole 8a described later in FIG.
　図２は、本発明の実施の形態１に係る空気調和機の室外機の凍結防止用ヒーターを取り付けた際の概略状態図である。図２に示されるように、底板８には、室外熱交換器５と、凍結防止用ヒーター６と、排水穴８ａと、ヒーター固定具７と、が設けられている。凍結防止用ヒーター６は、底板８と室外熱交換器５との隙間であって、室外熱交換器５の下方に配置されている。底板８は傾斜を有し、排水穴８ａは、底板８の中央部の背面側に設けられ、底板８の中で最も低くなる位置になるように配置されている。また、凍結防止用ヒーター６は、排水穴８ａの縁の一部に沿うように配置され、さらに、底板８と室外熱交換器５との隙間に生じる霜を融解するために底板８の排水経路上に這わせるような形状となっている。 FIG. 2 is a schematic state diagram when the heater for freezing prevention of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention is attached. As shown in FIG. 2, the bottom plate 8 is provided with an outdoor heat exchanger 5, a freezing prevention heater 6, a drain hole 8 a, and a heater fixture 7. The antifreezing heater 6 is a gap between the bottom plate 8 and the outdoor heat exchanger 5 and is disposed below the outdoor heat exchanger 5. The bottom plate 8 has an inclination, and the drain hole 8 a is provided on the back side of the central portion of the bottom plate 8 and is disposed at the lowest position in the bottom plate 8. Further, the antifreezing heater 6 is disposed along a part of the edge of the drain hole 8a, and further, the drain path of the bottom plate 8 in order to melt frost generated in the gap between the bottom plate 8 and the outdoor heat exchanger 5. It has a shape that crawls up.
　図３は、本発明の実施の形態１に係る空気調和機の室外機の凍結防止用ヒーターを取り付けた際の概略拡大図である。図３に示されるように、凍結防止用ヒーター６は排水穴８ａを囲むように設けられている。凍結防止用ヒーター６は、ヒーター固定具７により固定され、ヒーター固定具７はネジ１８により底板８に固定されている。 FIG. 3 is a schematic enlarged view when the anti-freezing heater of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention is attached. As shown in FIG. 3, the antifreezing heater 6 is provided so as to surround the drain hole 8a. The antifreezing heater 6 is fixed by a heater fixture 7, and the heater fixture 7 is fixed to the bottom plate 8 by screws 18.
　図４は、本発明の実施の形態１に係る空気調和機の室外機に取り付けられるヒーター固定具の斜視図である。図４に示されるように、ヒーター固定具７は、枠体の形状、つまり中空矩形状をなし、両端部にネジ１８を挿入するネジ穴１９が設けられている。また、ヒーター固定具７は、ヒーター固定具７の中空矩形状の内周側に下方へ突出したヒーター被覆片７ｃを備えている。ヒーター被覆片７ｃについては、後述する図６において説明する。なお、ヒーター被覆片７ｃは、本発明における「一方の端部」に相当する。 FIG. 4 is a perspective view of a heater fixture attached to the outdoor unit of the air conditioner according to Embodiment 1 of the present invention. As shown in FIG. 4, the heater fixture 7 has a frame shape, that is, a hollow rectangular shape, and is provided with screw holes 19 into which screws 18 are inserted at both ends. In addition, the heater fixture 7 includes a heater covering piece 7 c that protrudes downward on the inner peripheral side of the hollow rectangular shape of the heater fixture 7. The heater covering piece 7c will be described later with reference to FIG. The heater covering piece 7c corresponds to “one end portion” in the present invention.
　図５は、本発明の実施の形態１に係る空気調和機の室外機の凍結防止用ヒーターを取り付けた際の概略上面視図である。また、図６は、図５のＺ－Ｚ断面の一例を示す概略断面図である。図５及び図６に示されるように、凍結防止用ヒーター６を室外熱交換器５の下方に配置した状態で、排水穴８ａの径を大きくし、凍結防止用ヒーター６の形状を変更しない場合、凍結防止用ヒーター６の一部が排水穴８ａ上にはみ出す。つまり、排水穴８ａの投影面に凍結防止用ヒーター６の一部が重複するように配置される。 FIG. 5 is a schematic top view when the anti-freezing heater of the outdoor unit of the air conditioner according to Embodiment 1 of the present invention is attached. FIG. 6 is a schematic cross-sectional view showing an example of the ZZ cross section of FIG. As shown in FIG. 5 and FIG. 6, when the diameter of the drain hole 8 a is increased and the shape of the anti-freezing heater 6 is not changed with the anti-freezing heater 6 disposed below the outdoor heat exchanger 5. A part of the antifreezing heater 6 protrudes into the drain hole 8a. That is, it arrange | positions so that a part of heater 6 for antifreezing may overlap with the projection surface of the drain hole 8a.
　図６に示されるように、ヒーター固定具７は、断面視逆Ｊ字状で背面同士が対面しており、凍結防止用ヒーター６の外周の一部を覆う。中空矩形状のヒーター固定具７の内周側から鉛直方向に下方へ突出したヒーター被覆片７ｃは、底板８の排水穴８ａの投影面上に位置する。また、ヒーター被覆片７ｃの先端部を構成するヒーター被覆片下端部７ａは、凍結防止用ヒーター６と底板８の接触点である凍結防止用ヒーター下端部６ａより低い位置に配置され、排水穴８ａに挿通された状態となる。このようにヒーター固定具７は、凍結防止用ヒーター６の外周の一部を覆うようにして、凍結防止用ヒーター６を固定する。なお、ヒーター被覆片下端部７ａは、底板８の上面及び下面の範囲内、つまり底板８の厚さの範囲内に設けられることが望ましい。このようにすることで、人間の指がヒーター被覆片下端部７ａと底板８に引っ掛かり、人間の指が高温の凍結防止用ヒーター６に接触することを防ぐことができる。 As shown in FIG. 6, the heater fixture 7 is reverse J-shaped in cross-section and the backs are facing each other, and covers a part of the outer periphery of the anti-freezing heater 6. The heater covering piece 7 c that protrudes downward in the vertical direction from the inner peripheral side of the hollow rectangular heater fixture 7 is positioned on the projection surface of the drain hole 8 a of the bottom plate 8. Further, the heater covering piece lower end portion 7a constituting the tip of the heater covering piece 7c is disposed at a position lower than the antifreezing heater lower end portion 6a that is a contact point between the antifreezing heater 6 and the bottom plate 8, and the drain hole 8a. It will be in the state inserted in. In this way, the heater fixing tool 7 fixes the antifreezing heater 6 so as to cover a part of the outer periphery of the antifreezing heater 6. The heater covering piece lower end portion 7 a is preferably provided within the range of the upper surface and the lower surface of the bottom plate 8, that is, within the thickness range of the bottom plate 8. By doing so, it is possible to prevent a human finger from being caught by the heater covering piece lower end portion 7 a and the bottom plate 8 and coming into contact with the high-temperature antifreezing heater 6.
　ここで、排水穴８ａの径をさらに拡大すると、底板８とヒーター被覆片下端部７ａとの隙間９の距離が大きくなる。ただし、隙間９の距離は、凍結防止用ヒーター下端部６ａと底板８とが接触できる範囲までとし、凍結防止用ヒーター６が底板８に固定できるようにする。また、隙間９が極端に広いと隙間９から人間の指などが入り、凍結防止用ヒーター６に触れてしまう可能性があるため、隙間９の距離は、例えば１２（ｍｍ）未満とする。 Here, when the diameter of the drainage hole 8a is further enlarged, the distance of the gap 9 between the bottom plate 8 and the heater covering piece lower end portion 7a is increased. However, the distance of the gap 9 is set to a range where the lower end portion 6a of the antifreezing heater and the bottom plate 8 can come into contact with each other, so that the antifreezing heater 6 can be fixed to the bottom plate 8. Further, if the gap 9 is extremely wide, a human finger or the like may enter through the gap 9 and touch the antifreezing heater 6, so the distance of the gap 9 is set to be less than 12 (mm), for example.
［実施の形態１の効果］
　以上のことから、本実施の形態１によれば、排水穴８ａが設けられた底板８と、排水穴８ａの投影面に一部が重複するように底板８に設けられた凍結防止用ヒーター６と、凍結防止用ヒーター６の外周の一部を覆い、凍結防止用ヒーター６を固定するヒーター固定具７と、を備え、ヒーター固定具７は、ヒーター被覆片７ｃの先端部が凍結防止用ヒーター下端部６ａよりも低い位置まで突出し、ヒーター被覆片７ｃの先端部が、排水穴８ａに挿通されている。このようにすることで、排水穴８ａの径を拡大しつつ室外機１００の外部から人間の手などが高温の凍結防止用ヒーター６に接触しない空気調和機の室外機１００を得ることができる。 [Effect of Embodiment 1]
From the above, according to the first embodiment, the bottom plate 8 provided with the drain hole 8a and the antifreezing heater 6 provided on the bottom plate 8 so as to partially overlap the projection surface of the drain hole 8a. And a heater fixture 7 that covers a part of the outer periphery of the anti-freezing heater 6 and fixes the anti-freezing heater 6. The heater fixing device 7 has the tip of the heater covering piece 7 c at the tip of the anti-freezing heater. It protrudes to a position lower than the lower end 6a, and the tip of the heater covering piece 7c is inserted into the drain hole 8a. By doing in this way, the outdoor unit 100 of the air conditioner from which the human hand etc. do not contact the high temperature freezing prevention heater 6 from the exterior of the outdoor unit 100 can be obtained, expanding the diameter of the drain hole 8a.
　また、ヒーター被覆片下端部７ａと底板８との距離が１２ｍｍ未満であるとする。このようにすることで、排水穴８ａの径を広げても人間の指などが凍結防止用ヒーター６に接触しない空気調和機の室外機１００を得ることができる。 Suppose that the distance between the heater covering piece lower end 7a and the bottom plate 8 is less than 12 mm. By doing in this way, the outdoor unit 100 of the air conditioner in which a human finger etc. do not contact the anti-freezing heater 6 even if the diameter of the drain hole 8a is widened can be obtained.
　また、ヒーター固定具７は、断面視逆Ｊ字状である。このようにすることで、ヒーター固定具７で凍結防止用ヒーター６の外周の一部を覆うことができるため、凍結防止用ヒーター６をより強固に固定することができる。 Also, the heater fixture 7 has a reverse J-shape in cross section. By doing in this way, since a part of outer periphery of the antifreezing heater 6 can be covered with the heater fixing tool 7, the antifreezing heater 6 can be fixed more firmly.
実施の形態２．
　本実施の形態２における空気調和機の室外機の基本的な構成は実施の形態１における空気調和機の室外機と同様であるため、以下、実施の形態１との相違点を中心に本実施の形態２を説明する。実施の形態１と本実施の形態２との相違点は、ヒーター被覆片下端部が屈曲している点である。 Embodiment 2. FIG.
Since the basic configuration of the outdoor unit of the air conditioner in the second embodiment is the same as that of the outdoor unit of the air conditioner in the first embodiment, the present embodiment will be mainly focused on the differences from the first embodiment. Form 2 will be described. The difference between the first embodiment and the second embodiment is that the lower end portion of the heater covering piece is bent.
　図７は、図５のＺ－Ｚ断面の他の一例を示す概略断面図である。図７に示されるように、ヒーター固定具７Ａは、断面視逆Ｌ字形状をなしている。ヒーター固定具７Ａは、内周側に鉛直方向に下方へ突出したヒーター被覆片７ｃを有する。ヒーター被覆片７ｃの先端部であるヒーター被覆片下部７ｂは、凍結防止用ヒーター６がある方向に向かって巻き付けるように屈曲されている。このようにすることで、排水穴８ａの径を広げても、ヒーター被覆片下部７ｂが屈曲していることで、隙間９の距離を小さくでき、指などが隙間９を介して凍結防止用ヒーター６に接触することを防ぐことができる。 FIG. 7 is a schematic sectional view showing another example of the ZZ section of FIG. As shown in FIG. 7, the heater fixture 7 </ b> A has a reverse L-shape in cross section. The heater fixture 7A has a heater covering piece 7c that protrudes downward in the vertical direction on the inner peripheral side. The heater covering piece lower part 7b, which is the tip of the heater covering piece 7c, is bent so as to be wound in the direction in which the antifreezing heater 6 is present. In this way, even if the diameter of the drain hole 8a is widened, the heater covering piece lower portion 7b is bent, so that the distance of the gap 9 can be reduced, and a finger or the like can be prevented from freezing via the gap 9. 6 can be prevented.
［実施の形態２の効果］
　以上のことから、本実施の形態２によれば、ヒーター被覆片７ｃの先端部は、凍結防止用ヒーター６に向かって屈曲している構成とする。このようにすることで、実施の形態１の効果に加えて、排水穴８ａの径を広げても指などが凍結防止用ヒーター６に接触しない空気調和機の室外機１００を得ることができる。 [Effect of Embodiment 2]
From the above, according to the second embodiment, the tip of the heater covering piece 7 c is bent toward the antifreezing heater 6. By doing in this way, in addition to the effect of Embodiment 1, the outdoor unit 100 of the air conditioner in which a finger etc. do not contact the antifreezing heater 6 even if the diameter of the drain hole 8a is widened can be obtained.
実施の形態３．
　本実施の形態３における空気調和機の室外機の基本的な構成は実施の形態１における空気調和機の室外機と同様であるため、以下、実施の形態１との相違点を中心に本実施の形態３を説明する。実施の形態１と本実施の形態３との相違点は、ヒーター被覆片下端部にヘミング曲げ加工等が施されている点である。 Embodiment 3 FIG.
Since the basic configuration of the outdoor unit of the air conditioner in the third embodiment is the same as that of the outdoor unit of the air conditioner in the first embodiment, the present embodiment will be mainly described below with respect to differences from the first embodiment. Form 3 will be described. The difference between the first embodiment and the third embodiment is that the lower end portion of the heater covering piece is subjected to hemming bending or the like.
　図８は、図５のＺ－Ｚ断面の他の一例を示す概略断面図である。図８に示されるように、ヒーター固定具７Ｂは、内周側に鉛直方向に下方に突出したヒーター被覆片７ｃを有する。ヒーター固定具７Ｂのヒーター被覆片７ｃの先端部であるヒーター被覆片下部７ｄは、指で触れる箇所に該当する。そのため、ヒーター被覆片下部７ｄを保護するため、ヒーター被覆片下部７ｄは、密着折り返し加工、つまりヘミング曲げ加工、又は塗装が施されている。 FIG. 8 is a schematic cross-sectional view showing another example of the ZZ cross section of FIG. As shown in FIG. 8, the heater fixture 7B has a heater covering piece 7c that protrudes downward in the vertical direction on the inner peripheral side. The heater covering piece lower portion 7d, which is the tip of the heater covering piece 7c of the heater fixture 7B, corresponds to a place touched by a finger. Therefore, in order to protect the heater covering piece lower portion 7d, the heater covering piece lower portion 7d is subjected to contact folding processing, that is, hemming bending processing or painting.
［実施の形態３の効果］
　以上のことから、本実施の形態３によれば、ヒーター被覆片７ｃの先端部は、ヘミング曲げ加工、又は塗装が施されている構成とする。このようにすることで、実施の形態１の効果に加えて、ヒーター被覆片７ｃの鋭利な先端部を保護できる空気調和機の室外機１００を得ることができる。 [Effect of Embodiment 3]
From the above, according to the third embodiment, the tip of the heater covering piece 7c is configured to be hemmed or painted. By doing in this way, in addition to the effect of Embodiment 1, the outdoor unit 100 of the air conditioner which can protect the sharp front-end | tip part of the heater covering piece 7c can be obtained.
　以上、実施の形態１～３について説明したが、本発明は各実施の形態の説明に限定されない。例えば、各実施の形態の全て又は一部を組み合わせることも可能である。 Although Embodiments 1 to 3 have been described above, the present invention is not limited to the description of each embodiment. For example, it is possible to combine all or some of the embodiments.
　１　前面パネル、２　側面パネル、３　天面パネル、４　仕切り板、４ａ　送風機室、４ｂ　機械室、５　室外熱交換器、５ａ　側面側平面部、５ｂ　角部、５ｃ　背面側平面部、６　凍結防止用ヒーター、６ａ　凍結防止用ヒーター下端部、７　ヒーター固定具、７Ａ　ヒーター固定具、７Ｂ　ヒーター固定具、７ａ　ヒーター被覆片下端部、７ｂ　ヒーター被覆片下部、７ｃ　ヒーター被覆片、７ｄ　ヒーター被覆片下部、８　底板、８ａ　排水穴、９　隙間、１０　モーター、１１　プロペラファン、１２　モーターサポート、１３　圧縮機、１４　冷媒配管、１５　電気品、１７　脚部、１８　ネジ、１９　ネジ穴、１００　室外機。 1 Front panel, 2 Side panel, 3 Top panel, 4 Partition plate, 4a Blower room, 4b Machine room, 5 Outdoor heat exchanger, 5a Side plane part, 5b Corner part, 5c Back plane part, 6 Freezing prevention Heater, 6a, freezing prevention heater lower end, 7 heater fixing tool, 7A heater fixing tool, 7B heater fixing tool, 7a heater covering piece lower end, 7b heater covering piece lower part, 7c heater covering piece lower part, 7d heater covering piece lower part, 8 bottom plate, 8a drain hole, 9 gap, 10 motor, 11 propeller fan, 12 motor support, 13 compressor, 14 refrigerant piping, 15 electrical products, 17 legs, 18 screws, 19 screw holes, 100 outdoor unit.

Claims (6)

  1. 　排水穴が設けられた底板と、
    　前記排水穴の投影面に一部が重複するように底板に設けられたヒーターと、
    　前記ヒーターの外周の一部を覆い、前記ヒーターを固定するヒーター固定具と、を備え、
    　前記ヒーター固定具は、一方の端部の先端部が前記ヒーターの下端部よりも低い位置まで突出し、
    　前記一方の端部の先端部は、前記排水穴に挿通されている
    　空気調和機の室外機。     A bottom plate provided with drainage holes;
    A heater provided on the bottom plate so as to partially overlap the projection surface of the drainage hole;
    Covering a part of the outer periphery of the heater, and a heater fixture for fixing the heater,
    The heater fixture protrudes to a position where the tip of one end is lower than the lower end of the heater,
    The front end portion of the one end portion is inserted through the drainage hole.
  2. 　前記一方の端部と前記底板との距離が１２ｍｍ未満である
    　請求項１に記載の空気調和機の室外機。     The outdoor unit of the air conditioner according to claim 1, wherein a distance between the one end and the bottom plate is less than 12 mm.
  3. 　前記ヒーター固定具は、断面視逆Ｊ字状である
    　請求項１又は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 heater fixture has an inverted J-shape in cross section.
  4. 　前記ヒーター固定具は、断面視逆Ｌ字状である
    　請求項１又は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 heater fixture has an inverted L shape in cross section.
  5. 　前記一方の端部の先端部は、前記ヒーターに向かって屈曲している
    　請求項１～４のいずれか一項に記載の空気調和機の室外機。     The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein a tip end portion of the one end portion is bent toward the heater.
  6. 　前記一方の端部の先端部は、ヘミング曲げ加工、又は塗装が施されている
    　請求項１～４のいずれか一項に記載の空気調和機の室外機。     The outdoor unit for an air conditioner according to any one of claims 1 to 4, wherein a tip of the one end is subjected to hemming bending or painting.
PCT/JP2015/077954 2015-10-01 2015-10-01 Outdoor unit of air conditioning apparatus WO2017056294A1 (en)

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JPWO2021075013A1 (en) * 2019-10-17 2021-04-22

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JP2010048526A (en) * 2008-08-25 2010-03-04 Sharp Corp Air conditioner
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JP2010048526A (en) * 2008-08-25 2010-03-04 Sharp Corp Air conditioner
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