WO2023026450A1 - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
WO2023026450A1
WO2023026450A1 PCT/JP2021/031434 JP2021031434W WO2023026450A1 WO 2023026450 A1 WO2023026450 A1 WO 2023026450A1 JP 2021031434 W JP2021031434 W JP 2021031434W WO 2023026450 A1 WO2023026450 A1 WO 2023026450A1
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WIPO (PCT)
Prior art keywords
copper alloy
air conditioner
copper
conditioner according
content
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PCT/JP2021/031434
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French (fr)
Japanese (ja)
Inventor
敏明 金井
正徳 秋元
啓二 横山
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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Application filed by 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to PCT/JP2021/031434 priority Critical patent/WO2023026450A1/en
Priority to JP2021569347A priority patent/JP7261908B1/en
Publication of WO2023026450A1 publication Critical patent/WO2023026450A1/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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers

Definitions

  • the present invention relates to air conditioners.
  • Patent Literature 1 discloses a technique for keeping an indoor unit clean by disinfection and sterilization using ultraviolet rays.
  • Patent Document 2 discloses a technique of arranging a stainless steel sheet on the surface that becomes the upper surface when the operation of the vertical wind direction plate is stopped.
  • the present invention has been made in view of such problems, and aims to keep the indoor unit clean.
  • the present invention is an air conditioner, and includes an indoor unit in which copper or a copper alloy is arranged in at least part of the ventilation passage on the downstream side of the heat exchanger.
  • the indoor unit can be kept clean.
  • FIG. 1 is an external configuration diagram showing an air conditioner
  • FIG. It is a figure which shows the refrigerant circuit of an air conditioner. It is a figure which shows the structure of an indoor unit.
  • FIG. 4 is a diagram showing a first up-down wind direction plate;
  • FIG. 1 is an external configuration diagram showing an air conditioner 1 according to an embodiment.
  • the air conditioner 1 performs air conditioning by circulating a refrigerant in a refrigeration cycle (heat pump cycle).
  • the air conditioner 1 includes an indoor unit 10 installed indoors (air-conditioned space), an outdoor unit 20 installed outdoors (outdoors), a remote controller 30 operated by a user, It has
  • the indoor unit 10 includes a remote control communication unit 11.
  • the remote controller communication unit 11 transmits and receives predetermined signals to and from the remote controller 30 through infrared communication or the like.
  • the remote control communication unit 11 receives signals from the remote controller 30 such as a start/stop command, change in temperature setting, change in operation mode, and timer setting. Further, the remote control communication unit 11 transmits the detected value of the indoor temperature and the like to the remote control 30 .
  • the indoor unit 10 and the outdoor unit 20 are connected via a refrigerant pipe and also via a communication line.
  • the housing 15 of the indoor unit 10 is formed in white so as to harmonize with the interior of the room.
  • the color of the housing 15 is adjusted by mixing a color resin material into the base resin material that is the material of the housing 15 .
  • FIG. 2 is a diagram showing the refrigerant circuit Q of the air conditioner 1 according to the embodiment.
  • the solid arrows shown in FIG. 2 indicate the flow of the refrigerant during the heating operation.
  • the dashed arrows shown in FIG. 2 indicate the flow of the refrigerant during the cooling operation.
  • the indoor unit 10 includes, in addition to the remote control communication section 11, an indoor heat exchanger 12, an indoor fan 13, and an indoor fan driving section 13a.
  • the indoor heat exchanger 12 heat exchange is performed between the refrigerant flowing through the heat transfer tubes and the indoor air sent from the indoor fan 13 .
  • the indoor heat exchanger 12 operates as a condenser or an evaporator by switching a four-way valve 25, which will be described later.
  • the indoor fan 13 is installed near the indoor heat exchanger 12 .
  • the indoor fan 13 sends indoor air into the indoor heat exchanger 12 by driving of the indoor fan drive part 13a.
  • the outdoor unit 20 includes a compressor 21 , an outdoor heat exchanger 22 , an outdoor fan 23 , an outdoor expansion valve 24 (expansion valve), and a four-way valve 25 .
  • the compressor 21 compresses a low-temperature, low-pressure gas refrigerant and discharges it as a high-temperature, high-pressure gas refrigerant by driving a compressor motor 21a.
  • heat exchange is performed between the refrigerant flowing through the heat transfer tubes and the outside air sent from the outdoor fan 23 .
  • the outdoor heat exchanger 22 operates as a condenser or an evaporator by switching the four-way valve 25 .
  • the outdoor fan 23 is installed near the outdoor heat exchanger 22, as shown in FIG.
  • the outdoor fan 23 sends the outside air to the outdoor heat exchanger 22 by driving the outdoor fan driving section 23a.
  • the outdoor expansion valve 24 has a function of decompressing the refrigerant condensed in the "condenser" (one of the outdoor heat exchanger 22 and the indoor heat exchanger 12).
  • the refrigerant decompressed by the outdoor expansion valve 24 is guided to an "evaporator" (the other of the outdoor heat exchanger 22 and the indoor heat exchanger 12).
  • the four-way valve 25 is a valve that switches the refrigerant flow path according to the operation mode of the air conditioner 1 .
  • the refrigerant is supplied in the order of the compressor 21, the outdoor heat exchanger 22 (condenser), the outdoor expansion valve 24, and the indoor heat exchanger 12 (evaporator). becomes a refrigeration cycle in which
  • the compressor 21, the indoor heat exchanger 12 (condenser), the outdoor expansion valve 24, and the outdoor heat exchanger 22 (evaporator) It becomes a refrigeration cycle in which the refrigerant circulates in order.
  • the above-described “condenser” and “evaporator” is the outdoor heat exchanger 22 and the other is the indoor heat exchanger 12 .
  • FIG. 3 is a diagram showing the structure of the indoor unit 10.
  • FIG. 3 is a cross-sectional view perpendicular to the rear surface 120 of the indoor unit 10 and parallel to the vertical direction of the indoor unit 10.
  • the x-axis direction (the depth direction of the paper surface) in the three-dimensional coordinates as shown in FIG. direction)
  • the z-axis direction (horizontal direction of the paper surface) is defined as the depth direction of the indoor unit 10 .
  • the front side of the paper is the right direction
  • the depth direction is the left direction.
  • the indoor unit 10 is installed near the ceiling of the room so that the back surface 120 is in contact with the wall B.
  • a room as an air-conditioned space extends on the left side of the paper surface, and the indoor unit 10 has a structure for blowing air so as to adjust the temperature of the room.
  • the indoor unit 10 includes an indoor fan 13 inside the housing 15 including the front air inlet 105 and the upper air inlet 111 .
  • An indoor heat exchanger 12 is arranged between the front air inlet 105 and upper air inlet 111 and the indoor fan 13 .
  • heat is exchanged with the wind generated by driving the indoor fan 13 .
  • the indoor unit 10 is further provided with a filter device 103a provided on the front surface, a filter device 103b provided on the upper surface, a drain pan 104, a plurality of left and right wind direction plates 107, two up and down direction plates 121 and 122, and a casing 109. ing. Drain pan 104 receives water falling from indoor heat exchanger 12 .
  • the left/right wind direction plate 107 is provided near the air outlet 113 .
  • Casing 109 is a curved surface portion extending to air outlet 113 provided to guide air that has passed through indoor heat exchanger 12 to air outlet 113 .
  • two up-down wind direction plates 121 and 122 positioned above and below are provided when the air conditioner 1 is in the shutdown state.
  • the vertical wind direction plate 121 arranged on the upper side and the vertical wind direction plate 122 arranged on the lower side of the two vertical wind direction plates 121 and 122 are respectively , the first vertical wind direction plate 121 and the second vertical wind direction plate 122 as appropriate.
  • the first and second vertical wind direction plates 121 and 122 are opened, and a ventilation path is formed between the first and second vertical direction plates 121 and 122. It is formed.
  • the number of vertical wind direction plates provided in the indoor unit 10 is not limited to the embodiment.
  • the indoor unit 10 may be provided with only one up-down wind direction plate, or may be provided with three or more up-down direction plates.
  • the air is sucked into the indoor unit 10 through the front air inlet 105 and the upper air inlet 111 , large dusts are removed by the filter devices 103 a and 103 b , and the air passes through the indoor heat exchanger 12 .
  • the indoor fan 13 generates a flow of air passing through the indoor heat exchanger 12 by being driven.
  • a cross-flow fan shall be used for the indoor fan 13, for example. However, the indoor fan 13 is not limited to a cross-flow fan as long as it generates air flow.
  • a drain pan 104 is provided in front of and below the indoor fan 13 .
  • a casing 109 is provided on the rear surface 120 side.
  • the indoor fan 13 When air is sucked from above the indoor heat exchanger 12 and air is blown to the space below, the indoor fan 13 is rotated clockwise when viewed from the right in the depth direction, as shown in FIG. Rotate to A. After the air is blown out by the indoor fan 13, it flows along the casing 109, and the blowing direction is controlled by the first up-down wind direction plate 121, the second up-down wind direction plate 122, and the left-right direction plate 107, and the air is blown out into the room, which is the air-conditioned space. flow out to The first vertical airflow direction plate 121 and the second vertical airflow direction plate 122 control the direction of the blown air in the vertical direction. The left/right wind direction plate 107 controls the wind direction in the left/right direction.
  • a copper alloy is arranged in a portion that can serve as a ventilation path for the air taken into the indoor unit 10 .
  • the ventilation path includes the two filter devices 103a and 103b, the inner rear surface 110 provided behind the indoor unit 10, the indoor fan 13, the casing 109, the lower surface 104a of the drain pan 104, and the vertical wind direction plate 121. , 122 and .
  • the part indicated by the thick line in FIG. 3 is part of the part where the copper alloy is arranged.
  • a copper alloy is placed on the outward facing surface and the inner back surface 110 of each of the two filter devices 103a, 103b.
  • the copper alloy is arranged on the ventilation surface 109 a of the casing 109 on the side of the indoor fan 13 and the lower surface 104 a of the drain pan 104 .
  • the copper alloy is arranged on the inner surfaces 121 a and 122 a of the vertical wind direction plates 121 and 122 respectively and on the left and right sides of the left/right direction plate 107 .
  • the inner surfaces 121a and 122a are surfaces positioned inside the housing 15 when the vertical airflow direction plates 121 and 122 are both closed, that is, when the air conditioning operation is not performed.
  • the surfaces of the vertical airflow direction plates 121 and 122 that are outside the housing 15 when the vertical airflow direction plates 121 and 122 are closed are referred to as outer surfaces 121b and 122b, respectively.
  • the copper alloy is arranged both upstream and downstream of the indoor heat exchanger 12 in the ventilation passage.
  • the copper alloy may be placed in at least part of the downstream side of the ventilation passage of the indoor heat exchanger 12, and the region in which the copper alloy is placed is not limited to the embodiment.
  • a copper alloy is arranged in a region other than the tip portion 109b. That is, no copper alloy is placed in the tip portion 109b.
  • a copper alloy is arranged at the tip portion 109b, dew condensation is likely to occur, and when dew condensation occurs, the dew condensation water falls into the room.
  • a heat insulating material is arranged at the tip portion 109b and a resin is arranged thereon. Further, the tip portion 109b serves as a support portion to which the left/right wind direction plate 107 is fixed.
  • the fixing portion of the left/right air deflector 107 is made of resin, and from the viewpoint of ensuring stable operation of the left/right air deflector 107, the tip portion 109b is made of the same resin as the fixing portion of the left/right air deflector 107. is preferred. Furthermore, it is highly possible that the front end portion 109b can be seen by a person in the room when the vertical wind direction plates 121 and 122 are open, so it is preferable not to dispose a copper alloy in this portion.
  • the tip portion 109b is made of the same resin as that of the housing 15, and the color of the tip portion 109b is the same as that of the housing 15. FIG.
  • FIG. 4 is a perspective view of the inner surface 121a side of the first up/down wind direction plate 121 viewed obliquely from above.
  • the copper alloy is arranged in a region of the inner surface 121a of the first vertical wind direction plate 121 excluding the end portions.
  • the end portion includes the tip side portion 121c, the left side portion 121d, and the right side portion 121e of the first up-down wind direction plate 121 .
  • the copper alloy is not arranged at the end portion, when the first up-down wind direction plate 121 is closed, the inside copper alloy is not visible to people in the room, and the appearance of the indoor unit 10 looks uniform. There is a good design.
  • the copper alloy is not disposed on at least part of the end portion of the first vertical wind direction plate 121 .
  • a copper alloy may be disposed on the left side portion 121d and the right side portion 121e while no copper alloy is disposed on the tip side portion 121c.
  • the second up-down wind direction plate 122 also has a copper alloy disposed on the inner surface 122a except for the end portions.
  • the copper alloy forms the air passages, that is, the filter devices 103a, 103b, the inner rear surface 110, the indoor fan 13, the airflow surface 109a of the casing 109, the lower surface 104a of the drain pan 104, the vertical wind direction plates 121, 122, and the left and right wind direction plates 107. It is placed on a member that Specifically, copper or a copper alloy is arranged on each member by coating with copper powder, copper sputtering, copper plating, or the like. As another example, a copper or copper alloy sheet may be applied over each member.
  • the copper alloy of this embodiment contains at least copper, nickel, and zinc.
  • the color of the copper alloy containing nickel and zinc becomes a so-called champagne gold color, which is closer to white than pure copper.
  • air-conditioning operation that is, when the vertical wind direction plates 121 and 122 are open, a part of the ventilation passage is visible to people in the room. Therefore, if the housing 15 is white and the ventilation passages are made in a color other than white, the design will be degraded.
  • the present embodiment by arranging a copper alloy that is closer to white than pure copper, it is possible to suppress the color difference and give a sense of unity. That is, the designability can be improved.
  • the copper alloy may contain at least copper and nickel, and does not need to contain zinc.
  • C7521 may be used as a copper alloy.
  • the composition of C7521 is as shown in Table 1.
  • the content rate is the ratio of the mass of each component to the copper alloy per unit mass.
  • Monel (trademark) may be used as a copper alloy.
  • Monel has a nickel content of 63% to 70% by mass, a copper content of 63% to 70% by mass, and also contains small amounts of iron, manganese, silicon, and the like.
  • the content of nickel in the copper alloy is preferably 16.5% by mass or more and less than 70% by mass. 16.5% by weight is the minimum nickel content in C7521 and Monel, and 70% by weight is the maximum nickel content in C7521 and Monel. From the viewpoint of making the color of the copper alloy closer to white, it is preferable that the content of nickel be within this range.
  • the content of zinc in the copper alloy is preferably 13.7% by mass or more and less than 38% by mass. Furthermore, the nickel content in the copper alloy is preferably higher than the zinc content. Thereby, the color of the copper alloy can be made close to white.
  • the content of copper in the copper alloy is higher than the content of nickel and zinc. Furthermore, the content of copper in the copper alloy is preferably 60% by mass or more.
  • the copper alloy is arranged below the ventilation passage of the indoor unit 10. Thereby, the inside of the indoor unit 10 can be kept clean.
  • the color of the housing 15 is not limited to white, and may be any color that gives a sense of unity with the copper alloy.
  • the color of the housing 15 preferably has a brightness of 7 or more in the Munsell display system.
  • uniformity of color can be provided in the ventilation passage in which the housing 15 and the copper alloy are arranged.
  • colors with a lightness of 7 or more include ivory, beige, brown, and gray. Similar to the white color, these colors are also adjusted by mixing the color resin material into the base resin material that is the material of the housing 15 .
  • the housing 15 may be provided with a wood grain pattern using a color with a brightness of 7 or more. The wood grain tone is formed by coating the resin material that forms the housing 15 . Colors such as white and ivory may also be formed by painting.
  • a copper alloy may be arranged not only on the inner surface 121a but also on the outer surface 121b.
  • the outer surface 121b of the first up-down wind direction plate 121 forms part of the ventilation passage when the first up-down direction plate 121 is open. Therefore, by arranging the copper alloy, the air passage can be kept clean.
  • the copper alloy on the outer surface 121b in this way, when the first up-down wind direction plate 121 is closed, a part of the housing 15 has a copper alloy with a slightly different color from that of the housing 15. It will be arranged, and the design will be such that it accentuates the color of the housing 15 .
  • a copper alloy may also be arranged at the end of the first vertical wind direction plate 121 .
  • the design can be such that the color of the copper alloy accentuates the color of the housing 15 so that the copper alloy can be seen along the edge of the first up/down wind direction plate 121 .
  • copper alloys with different nickel contents may be arranged in the planar region and the curved region of the ventilation passage. More specifically, a copper alloy having a higher nickel content than the copper alloy disposed in the curved region is used in the planar region.
  • the addition of zinc increases the stiffness of copper alloys, making copper alloys with high zinc content suitable materials for curved areas.
  • the nickel content can be increased compared to the copper alloy arranged in the curved region. For example, the nickel content of the copper alloy arranged on the second vertical wind direction plate 122 and the lower surface 104a of the drain pan 104 is higher than the nickel content of the copper alloy arranged on the casing 109 and the first vertical wind direction plate 121.
  • the inner surface 121a and the outer surface 121b of the first up/down wind direction plate 121 are curved regions, and the inner surface 122a and the outer surface 122b of the second up/down wind direction plate 122 are flat regions. Further, the casing 109 is a curved area, and the lower surface 104a of the drain pan 104 is a planar area.
  • the ventilation passage may contain pure copper instead of the copper alloy. Also in this case, the inside of the indoor unit 10 can be kept clean.
  • the color of the housing 15 is preferably a color with a brightness difference of 3 or less from pure copper in the Munsell display system.
  • Examples of the color of such housing 15 include ivory color, beige color, brown color, gray color, and the like.
  • the housing 15 may be provided with a wood grain pattern using a color with a brightness difference of 3 or less from that of pure copper.

Abstract

[Problem] To keep an indoor unit hygienic. [Solution] Provided is an indoor unit that has copper or copper alloy disposed in at least a portion of a ventilation path downstream from a heat exchanger.

Description

空気調和機air conditioner
　本発明は、空気調和機に関する。 The present invention relates to air conditioners.
　近年、空気調和機の室内機を清潔に保ちたいというユーザからの要望が多い。これに対し、特許文献１には、紫外線を用いた除菌、殺菌により室内機を清潔に保つ技術が開示されている。また、特許文献２には、上下風向板の運転停止時に上面となる面にステンレスのシートを配置する技術が開示されている。 In recent years, there have been many requests from users to keep the indoor units of air conditioners clean. On the other hand, Patent Literature 1 discloses a technique for keeping an indoor unit clean by disinfection and sterilization using ultraviolet rays. Further, Patent Document 2 discloses a technique of arranging a stainless steel sheet on the surface that becomes the upper surface when the operation of the vertical wind direction plate is stopped.
特開２０１１－２２６７１７号公報JP 2011-226717 A 特開２０１７－４０４１０号公報JP 2017-40410 A
　室内機をより清潔に保つことのできる技術が望まれている。 There is a demand for technology that can keep indoor units cleaner.
　本発明は、このような問題点に鑑みなされたもので、室内機を清潔に保つことを目的とする。 The present invention has been made in view of such problems, and aims to keep the indoor unit clean.
　そこで、本発明は、空気調和機であって、熱交換器の下流側の通風路の少なくとも一部に銅又は銅合金を配置した室内機を備える。 Therefore, the present invention is an air conditioner, and includes an indoor unit in which copper or a copper alloy is arranged in at least part of the ventilation passage on the downstream side of the heat exchanger.
　本発明によれば、室内機を清潔に保つことができる。 According to the present invention, the indoor unit can be kept clean.
空気調和機を示す外観構成図である。1 is an external configuration diagram showing an air conditioner; FIG. 空気調和機の冷媒回路を示す図である。It is a figure which shows the refrigerant circuit of an air conditioner. 室内機の構造を示す図である。It is a figure which shows the structure of an indoor unit. 第１上下風向板を示す図である。FIG. 4 is a diagram showing a first up-down wind direction plate;
　図１は、実施形態に係る空気調和機１を示す外観構成図である。空気調和機１は、冷凍サイクル（ヒートポンプサイクル）で冷媒を循環させることによって、空調を行う。図１に示すように、空気調和機１は、室内（被空調空間）に設置される室内機１０と、屋外（室外）に設置される室外機２０と、ユーザによって操作されるリモコン３０と、を備えている。 FIG. 1 is an external configuration diagram showing an air conditioner 1 according to an embodiment. The air conditioner 1 performs air conditioning by circulating a refrigerant in a refrigeration cycle (heat pump cycle). As shown in FIG. 1, the air conditioner 1 includes an indoor unit 10 installed indoors (air-conditioned space), an outdoor unit 20 installed outdoors (outdoors), a remote controller 30 operated by a user, It has
　室内機１０は、リモコン通信部１１を備える。リモコン通信部１１は、赤外線通信等によって、リモコン３０との間で所定の信号を送受信する。例えば、リモコン通信部１１は、運転／停止指令、設定温度の変更、運転モードの変更、タイマの設定等の信号をリモコン３０から受信する。また、リモコン通信部１１は、室内温度の検出値等をリモコン３０に送信する。なお、図１では省略しているが、室内機１０と室外機２０とは、冷媒配管を介して接続されるとともに、通信線を介して接続されている。室内機１０の筐体１５は、室内に調和するよう白色に形成されている。筐体１５の色は、筐体１５の材料となるベース樹脂材にカラー樹脂材を混ぜ込むことで調整される。 The indoor unit 10 includes a remote control communication unit 11. The remote controller communication unit 11 transmits and receives predetermined signals to and from the remote controller 30 through infrared communication or the like. For example, the remote control communication unit 11 receives signals from the remote controller 30 such as a start/stop command, change in temperature setting, change in operation mode, and timer setting. Further, the remote control communication unit 11 transmits the detected value of the indoor temperature and the like to the remote control 30 . Although omitted in FIG. 1, the indoor unit 10 and the outdoor unit 20 are connected via a refrigerant pipe and also via a communication line. The housing 15 of the indoor unit 10 is formed in white so as to harmonize with the interior of the room. The color of the housing 15 is adjusted by mixing a color resin material into the base resin material that is the material of the housing 15 .
　図２は、実施形態に係る空気調和機１の冷媒回路Ｑを示す図である。なお、図２に示す実線矢印は、暖房運転時における冷媒の流れを示している。また、図２に示す破線矢印は、冷房運転時における冷媒の流れを示している。 FIG. 2 is a diagram showing the refrigerant circuit Q of the air conditioner 1 according to the embodiment. The solid arrows shown in FIG. 2 indicate the flow of the refrigerant during the heating operation. Also, the dashed arrows shown in FIG. 2 indicate the flow of the refrigerant during the cooling operation.
　室内機１０は、リモコン通信部１１のほかに、室内熱交換器１２と、室内ファン１３と、室内ファン駆動部１３ａと、を備えている。室内熱交換器１２において、その伝熱管を通流する冷媒と、室内ファン１３から送り込まれる室内空気と、の間で熱交換が行われる。室内熱交換器１２は、後述の四方弁２５の切り替えにより凝縮器または蒸発器として動作する。室内ファン１３は、室内熱交換器１２の付近に設置されている。室内ファン１３は、室内ファン駆動部１３ａの駆動によって、室内熱交換器１２に室内空気を送り込む。 The indoor unit 10 includes, in addition to the remote control communication section 11, an indoor heat exchanger 12, an indoor fan 13, and an indoor fan driving section 13a. In the indoor heat exchanger 12 , heat exchange is performed between the refrigerant flowing through the heat transfer tubes and the indoor air sent from the indoor fan 13 . The indoor heat exchanger 12 operates as a condenser or an evaporator by switching a four-way valve 25, which will be described later. The indoor fan 13 is installed near the indoor heat exchanger 12 . The indoor fan 13 sends indoor air into the indoor heat exchanger 12 by driving of the indoor fan drive part 13a.
　室外機２０は、圧縮機２１と、室外熱交換器２２と、室外ファン２３と、室外膨張弁２４（膨張弁）と、四方弁２５と、を備えている。圧縮機２１は、圧縮機モータ２１ａの駆動によって、低温低圧のガス冷媒を圧縮し、高温高圧のガス冷媒として吐出する。室外熱交換器２２において、その伝熱管を通流する冷媒と、室外ファン２３から送り込まれる外気と、の間で熱交換が行われる。室外熱交換器２２は、四方弁２５の切り替えにより凝縮器または蒸発器として動作する。 The outdoor unit 20 includes a compressor 21 , an outdoor heat exchanger 22 , an outdoor fan 23 , an outdoor expansion valve 24 (expansion valve), and a four-way valve 25 . The compressor 21 compresses a low-temperature, low-pressure gas refrigerant and discharges it as a high-temperature, high-pressure gas refrigerant by driving a compressor motor 21a. In the outdoor heat exchanger 22 , heat exchange is performed between the refrigerant flowing through the heat transfer tubes and the outside air sent from the outdoor fan 23 . The outdoor heat exchanger 22 operates as a condenser or an evaporator by switching the four-way valve 25 .
　室外ファン２３は、図１に示すように、室外熱交換器２２の付近に設置されている。室外ファン２３は、室外ファン駆動部２３ａの駆動によって、室外熱交換器２２に外気を送り込む。室外膨張弁２４は、「凝縮器」（室外熱交換器２２及び室内熱交換器１２の一方）で凝縮した冷媒を減圧する機能を有している。なお、室外膨張弁２４において減圧された冷媒は、「蒸発器」（室外熱交換器２２及び室内熱交換器１２の他方）に導かれる。 The outdoor fan 23 is installed near the outdoor heat exchanger 22, as shown in FIG. The outdoor fan 23 sends the outside air to the outdoor heat exchanger 22 by driving the outdoor fan driving section 23a. The outdoor expansion valve 24 has a function of decompressing the refrigerant condensed in the "condenser" (one of the outdoor heat exchanger 22 and the indoor heat exchanger 12). The refrigerant decompressed by the outdoor expansion valve 24 is guided to an "evaporator" (the other of the outdoor heat exchanger 22 and the indoor heat exchanger 12).
　四方弁２５は、空気調和機１の運転モードに応じて、冷媒の流路を切り替える弁である。四方弁２５の切り替えにより、冷房運転時には、破線矢印で示すように、圧縮機２１、室外熱交換器２２（凝縮器）、室外膨張弁２４、及び室内熱交換器１２（蒸発器）の順に冷媒が循環する冷凍サイクルとなる。また、四方弁２５の切り替えにより、暖房運転時には、実線矢印で示すように、圧縮機２１、室内熱交換器１２（凝縮器）、室外膨張弁２４、及び室外熱交換器２２（蒸発器）の順に冷媒が循環する冷凍サイクルとなる。すなわち、圧縮機２１、「凝縮器」、室外膨張弁２４、及び「蒸発器」を順次に介して、冷凍サイクルで冷媒が循環する冷媒回路Ｑにおいて、前記した「凝縮器」及び「蒸発器」の一方は室外熱交換器２２であり、他方は室内熱交換器１２である。 The four-way valve 25 is a valve that switches the refrigerant flow path according to the operation mode of the air conditioner 1 . By switching the four-way valve 25, during cooling operation, as indicated by dashed arrows, the refrigerant is supplied in the order of the compressor 21, the outdoor heat exchanger 22 (condenser), the outdoor expansion valve 24, and the indoor heat exchanger 12 (evaporator). becomes a refrigeration cycle in which In addition, by switching the four-way valve 25, during heating operation, as indicated by solid line arrows, the compressor 21, the indoor heat exchanger 12 (condenser), the outdoor expansion valve 24, and the outdoor heat exchanger 22 (evaporator) It becomes a refrigeration cycle in which the refrigerant circulates in order. That is, in the refrigerant circuit Q in which the refrigerant circulates in the refrigeration cycle sequentially via the compressor 21, the "condenser", the outdoor expansion valve 24, and the "evaporator", the above-described "condenser" and "evaporator" is the outdoor heat exchanger 22 and the other is the indoor heat exchanger 12 .
　図３は、室内機１０の構造を示す図である。図３は、室内機１０の背面１２０に垂直でかつ室内機１０の上下方向に平行な断面図である。以下、図３に示すような３次元座標におけるｘ軸方向（紙面の奥行方向）を室内機１０の横方向、ｙ軸方向（紙面の縦方向）を室内機１０の上下方向（紙面上側が上方向）、ｚ軸方向（紙面の横方向）を室内機１０の奥行き方向とする。また、横方向のうち、紙面手前方向を右方向、奥行方向を左方向とする。 FIG. 3 is a diagram showing the structure of the indoor unit 10. FIG. 3 is a cross-sectional view perpendicular to the rear surface 120 of the indoor unit 10 and parallel to the vertical direction of the indoor unit 10. FIG. Hereinafter, the x-axis direction (the depth direction of the paper surface) in the three-dimensional coordinates as shown in FIG. direction), and the z-axis direction (horizontal direction of the paper surface) is defined as the depth direction of the indoor unit 10 . Also, in the horizontal direction, the front side of the paper is the right direction, and the depth direction is the left direction.
　室内機１０は、背面１２０が壁Ｂに接するように、部屋の天井近くに設置される。図３においては、紙面の左側に空調空間としての部屋が広がっており、室内機１０は、部屋の温度を調整するように風を流す構造となっている。 The indoor unit 10 is installed near the ceiling of the room so that the back surface 120 is in contact with the wall B. In FIG. 3, a room as an air-conditioned space extends on the left side of the paper surface, and the indoor unit 10 has a structure for blowing air so as to adjust the temperature of the room.
　室内機１０は、前面空気吸込口１０５及び上面空気吸込口１１１を含む筐体１５の内部に、室内ファン１３を備える。前面空気吸込口１０５及び上面空気吸込口１１１と、室内ファン１３の間には、室内熱交換器１２が配置されている。室内熱交換器１２においては、室内ファン１３の駆動により発生する風との間で熱交換が行われる。室内機１０には、さらに、前面に設けられたフィルター装置１０３ａ、上面に設けられたフィルター装置１０３ｂ、ドレンパン１０４、複数の左右風向板１０７、２つの上下風向板１２１，１２２、ケーシング１０９が設けられている。ドレンパン１０４は、室内熱交換器１２から落ちてくる水を受ける。左右風向板１０７は、空気の吹出口１１３の近くに設けられる。ケーシング１０９は、室内熱交換器１２を通過した空気を吹出口１１３に導くように設けられた、吹出口１１３まで延びる曲面部である。なお、本実施形態の室内機１０においては、空気調和機１の運転停止状態において、上下に位置する２つの上下風向板１２１，１２２が設けられる。以下では、２つの上下風向板１２１，１２２を区別する場合には、２つの上下風向板１２１，１２２のうち上側に配置された上下風向板１２１及び下側に配置された上下風向板１２２をそれぞれ、第１上下風向板１２１及び第２上下風向板１２２と、適宜、称する。空気調和機１の運転時には、図３に示すように、第１上下風向板１２１及び第２上下風向板１２２が開き、第１上下風向板１２１と第２上下風向板１２２の間に通風路が形成される。 The indoor unit 10 includes an indoor fan 13 inside the housing 15 including the front air inlet 105 and the upper air inlet 111 . An indoor heat exchanger 12 is arranged between the front air inlet 105 and upper air inlet 111 and the indoor fan 13 . In the indoor heat exchanger 12 , heat is exchanged with the wind generated by driving the indoor fan 13 . The indoor unit 10 is further provided with a filter device 103a provided on the front surface, a filter device 103b provided on the upper surface, a drain pan 104, a plurality of left and right wind direction plates 107, two up and down direction plates 121 and 122, and a casing 109. ing. Drain pan 104 receives water falling from indoor heat exchanger 12 . The left/right wind direction plate 107 is provided near the air outlet 113 . Casing 109 is a curved surface portion extending to air outlet 113 provided to guide air that has passed through indoor heat exchanger 12 to air outlet 113 . In addition, in the indoor unit 10 of the present embodiment, two up-down wind direction plates 121 and 122 positioned above and below are provided when the air conditioner 1 is in the shutdown state. In the following, when distinguishing between the two vertical wind direction plates 121 and 122, the vertical wind direction plate 121 arranged on the upper side and the vertical wind direction plate 122 arranged on the lower side of the two vertical wind direction plates 121 and 122 are respectively , the first vertical wind direction plate 121 and the second vertical wind direction plate 122 as appropriate. During operation of the air conditioner 1, as shown in FIG. 3, the first and second vertical wind direction plates 121 and 122 are opened, and a ventilation path is formed between the first and second vertical direction plates 121 and 122. It is formed.
　なお、室内機１０に設けられる上下風向板の数は、実施形態に限定されるものではない。他の例としては、室内機１０は、１つの上下風向板のみを備えてもよく、３以上の上下風向板を備えてもよい。 The number of vertical wind direction plates provided in the indoor unit 10 is not limited to the embodiment. As another example, the indoor unit 10 may be provided with only one up-down wind direction plate, or may be provided with three or more up-down direction plates.
　空気は、前面空気吸込口１０５及び上面空気吸込口１１１から室内機１０に吸い込まれ、フィルター装置１０３ａ，１０３ｂによって大きな埃などが除去され、室内熱交換器１２を通過する。室内ファン１３は、駆動することで室内熱交換器１２を通過する風の流れを発生させる。室内ファン１３には、例えば、貫流ファンが用いられるものとする。ただし、室内ファン１３は、風の流れを生じさせるものであればよく、貫流ファンに限定されるものではない。室内ファン１３の前側かつ下側には、ドレンパン１０４が設けられる。背面１２０側には、ケーシング１０９が設けられる。 The air is sucked into the indoor unit 10 through the front air inlet 105 and the upper air inlet 111 , large dusts are removed by the filter devices 103 a and 103 b , and the air passes through the indoor heat exchanger 12 . The indoor fan 13 generates a flow of air passing through the indoor heat exchanger 12 by being driven. A cross-flow fan shall be used for the indoor fan 13, for example. However, the indoor fan 13 is not limited to a cross-flow fan as long as it generates air flow. A drain pan 104 is provided in front of and below the indoor fan 13 . A casing 109 is provided on the rear surface 120 side.
　室内熱交換器１２の上方から空気を吸い込み、下方の空間へ風を流す場合には、室内ファン１３は、図３に示すように、奥行き方向に向かって右から見て、時計回りとなる方向Ａに回転する。空気は室内ファン１３によって吹出された後に、ケーシング１０９に沿って流れ、さらに第１上下風向板１２１、第２上下風向板１２２及び左右風向板１０７によって吹き出し方向が制御されて、空調空間である室内へ流出する。第１上下風向板１２１及び第２上下風向板１２２は、吹き出し風の風向を上下方向に制御する。左右風向板１０７は、左右方向に風向を制御する。 When air is sucked from above the indoor heat exchanger 12 and air is blown to the space below, the indoor fan 13 is rotated clockwise when viewed from the right in the depth direction, as shown in FIG. Rotate to A. After the air is blown out by the indoor fan 13, it flows along the casing 109, and the blowing direction is controlled by the first up-down wind direction plate 121, the second up-down wind direction plate 122, and the left-right direction plate 107, and the air is blown out into the room, which is the air-conditioned space. flow out to The first vertical airflow direction plate 121 and the second vertical airflow direction plate 122 control the direction of the blown air in the vertical direction. The left/right wind direction plate 107 controls the wind direction in the left/right direction.
　本実施形態の室内機１０においては、室内機１０に取り込まれた空気の通風路となり得る部位に銅合金が配置される。このように、通風路の少なくとも一部に銅を含む。銅は、除菌効果に優れている。したがって、通風路に銅合金が配置されることにより、室内機１０内部を清潔に保つことができる。ここで、通風路は、２つのフィルター装置１０３ａ，１０３ｂと室内機１０の後方に設けられた内側背面１１０と、室内ファン１３と、ケーシング１０９と、ドレンパン１０４の下側面１０４ａと、上下風向板１２１，１２２と、により形成される。 In the indoor unit 10 of this embodiment, a copper alloy is arranged in a portion that can serve as a ventilation path for the air taken into the indoor unit 10 . Thus, at least a portion of the air passage contains copper. Copper has an excellent sterilizing effect. Therefore, the inside of the indoor unit 10 can be kept clean by arranging the copper alloy in the ventilation path. Here, the ventilation path includes the two filter devices 103a and 103b, the inner rear surface 110 provided behind the indoor unit 10, the indoor fan 13, the casing 109, the lower surface 104a of the drain pan 104, and the vertical wind direction plate 121. , 122 and .
　次に、通風路のうち、銅合金が配置される領域について説明する。図３において太線で示される部分は、銅合金が配置される部分の一部である。銅合金は、２つのフィルター装置１０３ａ，１０３ｂそれぞれの外側に向く面と、内側背面１１０と、に配置される。また、銅合金は、ケーシング１０９の室内ファン１３側の通風路面１０９ａと、ドレンパン１０４の下側面１０４ａと、に配置される。また、銅合金は、上下風向板１２１，１２２それぞれの内面１２１ａ，１２２ａと、左右風向板１０７の左右両側の面と、に配置される。ここで、内面１２１ａ，１２２ａは、いずれも上下風向板１２１，１２２が閉じた状態、すなわち空調運転が行われていない状態において、筐体１５の内側に位置する面である。なお、上下風向板１２１，１２２のうち、上下風向板１２１，１２２が閉じた状態において、筐体１５の外側になる面をそれぞれ外面１２１ｂ，１２２ｂと称する。 Next, the area where the copper alloy is arranged in the ventilation passage will be explained. The part indicated by the thick line in FIG. 3 is part of the part where the copper alloy is arranged. A copper alloy is placed on the outward facing surface and the inner back surface 110 of each of the two filter devices 103a, 103b. Moreover, the copper alloy is arranged on the ventilation surface 109 a of the casing 109 on the side of the indoor fan 13 and the lower surface 104 a of the drain pan 104 . In addition, the copper alloy is arranged on the inner surfaces 121 a and 122 a of the vertical wind direction plates 121 and 122 respectively and on the left and right sides of the left/right direction plate 107 . Here, the inner surfaces 121a and 122a are surfaces positioned inside the housing 15 when the vertical airflow direction plates 121 and 122 are both closed, that is, when the air conditioning operation is not performed. The surfaces of the vertical airflow direction plates 121 and 122 that are outside the housing 15 when the vertical airflow direction plates 121 and 122 are closed are referred to as outer surfaces 121b and 122b, respectively.
　このように、本実施形態においては、通風路のうち、室内熱交換器１２よりも上流側及び下流側のいずれにおいても、銅合金が配置される。なお、室内熱交換器１２の通風路の下流側の少なくとも一部に銅合金が配置されればよく、銅合金が配置される領域は、実施形態に限定されるものではない。 Thus, in this embodiment, the copper alloy is arranged both upstream and downstream of the indoor heat exchanger 12 in the ventilation passage. Note that the copper alloy may be placed in at least part of the downstream side of the ventilation passage of the indoor heat exchanger 12, and the region in which the copper alloy is placed is not limited to the embodiment.
　一方で、ケーシング１０９においては、先端部１０９ｂを除く領域に、銅合金が配置される。すなわち、先端部１０９ｂには、銅合金は配置されない。先端部１０９ｂに銅合金が配置されると、結露しやすくなり、結露した場合には結露水が室内に落ちてしまう。銅合金を配置しないことでこのように水滴が室内に落ちるのを防ぐことができる。先端部１０９ｂには、断熱材が配置され、その上に樹脂が配置されるのが好ましい。さらに、先端部１０９ｂは、左右風向板１０７が固定される支持部となる。左右風向板１０７の固定部は樹脂で形成されており、左右風向板１０７の安定した動作を確保する観点から、先端部１０９ｂは、左右風向板１０７の固定部と同種の樹脂で形成されるのが好ましい。さらには、先端部１０９ｂは、上下風向板１２１，１２２が開いた状態で、室内にいる人物から見える可能性が高いことからも、この部分には、銅合金を配置しないことが好ましい。先端部１０９ｂは、筐体１５と同種の樹脂で形成され、先端部１０９ｂの色は、筐体１５と同じ色であるものとする。 On the other hand, in the casing 109, a copper alloy is arranged in a region other than the tip portion 109b. That is, no copper alloy is placed in the tip portion 109b. When a copper alloy is arranged at the tip portion 109b, dew condensation is likely to occur, and when dew condensation occurs, the dew condensation water falls into the room. By not arranging the copper alloy, it is possible to prevent water droplets from falling into the room in this way. It is preferable that a heat insulating material is arranged at the tip portion 109b and a resin is arranged thereon. Further, the tip portion 109b serves as a support portion to which the left/right wind direction plate 107 is fixed. The fixing portion of the left/right air deflector 107 is made of resin, and from the viewpoint of ensuring stable operation of the left/right air deflector 107, the tip portion 109b is made of the same resin as the fixing portion of the left/right air deflector 107. is preferred. Furthermore, it is highly possible that the front end portion 109b can be seen by a person in the room when the vertical wind direction plates 121 and 122 are open, so it is preferable not to dispose a copper alloy in this portion. The tip portion 109b is made of the same resin as that of the housing 15, and the color of the tip portion 109b is the same as that of the housing 15. FIG.
　図４は、第１上下風向板１２１の内面１２１ａ側を斜め上から見た斜視図である。銅合金は、第１上下風向板１２１の内面１２１ａのうち、端部を除く領域に配置される。ここで、端部は、第１上下風向板１２１の先端辺部１２１ｃと、左辺部１２１ｄと、右辺部１２１ｅと、を含む。このように、端部に銅合金が配置されないことで、第１上下風向板１２１が閉じられた状態において、内側の銅合金が室内の人物に見えることがなく、室内機１０の外観に統一感があり、意匠性がよい。なお、第１上下風向板１２１の端部の少なくとも一部に銅合金が配置されなければよい。そうした他の例としては、先端辺部１２１ｃには銅合金が配置されない一方で、左辺部１２１ｄ及び右辺部１２１ｅには銅合金が配置されてもよい。第２上下風向板１２２も第１上下風向板１２１と同様に、内面１２２ａのうち、端部を除く領域に銅合金が配置されるものとする。 FIG. 4 is a perspective view of the inner surface 121a side of the first up/down wind direction plate 121 viewed obliquely from above. The copper alloy is arranged in a region of the inner surface 121a of the first vertical wind direction plate 121 excluding the end portions. Here, the end portion includes the tip side portion 121c, the left side portion 121d, and the right side portion 121e of the first up-down wind direction plate 121 . In this way, since the copper alloy is not arranged at the end portion, when the first up-down wind direction plate 121 is closed, the inside copper alloy is not visible to people in the room, and the appearance of the indoor unit 10 looks uniform. There is a good design. In addition, it is sufficient that the copper alloy is not disposed on at least part of the end portion of the first vertical wind direction plate 121 . As another such example, a copper alloy may be disposed on the left side portion 121d and the right side portion 121e while no copper alloy is disposed on the tip side portion 121c. Similarly to the first up-down wind direction plate 121, the second up-down wind direction plate 122 also has a copper alloy disposed on the inner surface 122a except for the end portions.
　次に、銅合金を配置するための具体的な方法について説明する。銅合金は、通風路、すなわちフィルター装置１０３ａ，１０３ｂ、内側背面１１０、室内ファン１３、ケーシング１０９の通風路面１０９ａ、ドレンパン１０４の下側面１０４ａ、上下風向板１２１，１２２、及び左右風向板１０７を形成する部材上に配置される。具体的には、銅粉体による塗装、銅のスパッタ、銅メッキなどの処理により、各部材上に銅又は銅合金が配置される。また他の例としては、銅又は銅合金のシートが各部材上に貼り付けられてもよい。 Next, a specific method for arranging the copper alloy will be explained. The copper alloy forms the air passages, that is, the filter devices 103a, 103b, the inner rear surface 110, the indoor fan 13, the airflow surface 109a of the casing 109, the lower surface 104a of the drain pan 104, the vertical wind direction plates 121, 122, and the left and right wind direction plates 107. It is placed on a member that Specifically, copper or a copper alloy is arranged on each member by coating with copper powder, copper sputtering, copper plating, or the like. As another example, a copper or copper alloy sheet may be applied over each member.
　次に、銅合金の組成について説明する。本実施形態の銅合金は、少なくとも銅と、ニッケルと、亜鉛と、を含む。このように、銅合金の色は、ニッケルと亜鉛を含むことにより、純銅に比べて白色に近い、いわゆるシャンパンゴールド色になる。これにより、筐体１５と、銅合金が配置された通風路の色の差を低減することができる。空調運転時、すなわち上下風向板１２１，１２２が開いた状態においては、室内にいる人から、通風路の一部が見える状態になる。したがって、筐体１５が白色なのに対し、通風路を白色と異なる色にした場合には意匠性が低下する。これに対し、本実施形態においては、純銅に比べてより白色に近い銅合金を配置することで、色の差を抑え、統一感を与えることができる。すなわち、意匠性をよくすることができる。なお、銅に亜鉛を加えることで、純銅に比べて黄色に近付けることができるが、さらにニッケルを加えることで、シャンパンゴールド色になる。すなわち、より黄色味を抑え、白色に近付けることができる。なお、白色に近づける観点からは、銅合金は、少なくとも銅とニッケルを含めばよく、亜鉛を含まなくてもよい。 Next, the composition of the copper alloy will be explained. The copper alloy of this embodiment contains at least copper, nickel, and zinc. In this way, the color of the copper alloy containing nickel and zinc becomes a so-called champagne gold color, which is closer to white than pure copper. As a result, it is possible to reduce the difference in color between the housing 15 and the ventilation passage in which the copper alloy is arranged. During air-conditioning operation, that is, when the vertical wind direction plates 121 and 122 are open, a part of the ventilation passage is visible to people in the room. Therefore, if the housing 15 is white and the ventilation passages are made in a color other than white, the design will be degraded. On the other hand, in the present embodiment, by arranging a copper alloy that is closer to white than pure copper, it is possible to suppress the color difference and give a sense of unity. That is, the designability can be improved. By adding zinc to copper, it is possible to make it closer to yellow than pure copper, but by further adding nickel, it becomes a champagne gold color. That is, it is possible to further suppress yellowness and bring the color closer to white. From the viewpoint of approximating white color, the copper alloy may contain at least copper and nickel, and does not need to contain zinc.
　銅合金としては、例えば、Ｃ７５２１を用いてもよい。Ｃ７５２１の組成は、表１に示す通りである。なお、含有率は、単位質量当たりの銅合金に対する各成分の質量の割合である。
Figure JPOXMLDOC01-appb-T000001
 As a copper alloy, for example, C7521 may be used. The composition of C7521 is as shown in Table 1. The content rate is the ratio of the mass of each component to the copper alloy per unit mass.
Figure JPOXMLDOC01-appb-T000001
　また、他の例としては、銅合金として、モネル（商標）を用いてもよい。モネルは、ニッケルの含有率が６３質量％～７０質量％で、かつ銅の含有率６３質量％～７０質量％であり、さらに少量の鉄、マンガン、ケイ素などを含む。 As another example, Monel (trademark) may be used as a copper alloy. Monel has a nickel content of 63% to 70% by mass, a copper content of 63% to 70% by mass, and also contains small amounts of iron, manganese, silicon, and the like.
　銅合金におけるニッケルの含有率は、１６．５質量％以上でかつ７０質量％未満とするのが好ましい。１６．５質量％は、Ｃ７５２１及びモネルにおけるニッケル含有率の最小値であり、７０質量％は、Ｃ７５２１及びモネルにおけるニッケルの含有率の最大値である。銅合金の色を白色に近くする観点から、この範囲の含有率のニッケルが含まれることが好ましい。 The content of nickel in the copper alloy is preferably 16.5% by mass or more and less than 70% by mass. 16.5% by weight is the minimum nickel content in C7521 and Monel, and 70% by weight is the maximum nickel content in C7521 and Monel. From the viewpoint of making the color of the copper alloy closer to white, it is preferable that the content of nickel be within this range.
　同様の観点から、銅合金における亜鉛の含有量は、１３．７質量％以上かつ３８質量％未満とするのが好ましい。さらには、銅合金におけるニッケルの含有率は、亜鉛の含有率に比べて大きいことが好ましい。これにより、銅合金の色を、白色に近い色とすることができる。 From the same point of view, the content of zinc in the copper alloy is preferably 13.7% by mass or more and less than 38% by mass. Furthermore, the nickel content in the copper alloy is preferably higher than the zinc content. Thereby, the color of the copper alloy can be made close to white.
　さらに、抗菌効果の観点からは、銅合金における銅の含有率は、ニッケル及び亜鉛の含有率に比べて大きいことが好ましい。さらに、銅合金における銅の含有率は、６０質量％以上であることが好ましい。 Furthermore, from the viewpoint of the antibacterial effect, it is preferable that the content of copper in the copper alloy is higher than the content of nickel and zinc. Furthermore, the content of copper in the copper alloy is preferably 60% by mass or more.
　以上のように、本実施形態の空気調和機１においては、室内機１０の通風路の下側に銅合金を配置する。これにより、室内機１０の内部を清潔に保つことができる。 As described above, in the air conditioner 1 of the present embodiment, the copper alloy is arranged below the ventilation passage of the indoor unit 10. Thereby, the inside of the indoor unit 10 can be kept clean.
（実験例）
　ＪＩＳ　Ｚ　２８０１　抗菌性試験法に準拠し、フィルム密着法にて抗菌効果の実験を行った。黄色ブドウ球菌、大腸菌、Ａ型インフルエンザウィルス、ネコカリシウィルスの４種類それぞれを、銅合金で形成された、５０ｍｍ×５０ｍｍの正方形のプレートに載せ、２４時間後の菌数の減少を調べた。表２にその結果を示す。ブランクには、銅合金に替えてガラスで形成された、５０ｍｍ×５０ｍｍの正方形のプレートを用いた。この結果、４種類の試験対象について、菌等の抑制率は９９．９９以上を示した。すなわち、銅合金の抗菌効果が認められた。
Figure JPOXMLDOC01-appb-T000002
 (Experimental example)
Based on JIS Z 2801 antibacterial test method, the antibacterial effect was tested by the film adhesion method. Four types of staphylococcus aureus, Escherichia coli, influenza A virus, and feline calicivirus were each placed on a square plate of 50 mm x 50 mm made of copper alloy, and the decrease in the number of bacteria was examined after 24 hours. Table 2 shows the results. A 50 mm×50 mm square plate made of glass instead of copper alloy was used as the blank. As a result, the suppression rate of bacteria and the like was 99.99 or higher for the four types of test objects. That is, the antibacterial effect of the copper alloy was recognized.
Figure JPOXMLDOC01-appb-T000002
　以上、本発明をその好適な実施形態に基づいて詳述してきたが、本発明はこれら特定の実施形態に限られるものではなく、この発明の要旨を逸脱しない範囲の様々な形態も本発明に含まれる。例えば、実施形態や変形例の一部を適宜組み合わせてもよい。 Although the present invention has been described in detail based on its preferred embodiments, the present invention is not limited to these specific embodiments, and various forms without departing from the gist of the present invention can be applied to the present invention. included. For example, some of the embodiments and modifications may be combined as appropriate.
　そうした第１の変形例としては、筐体１５の色は、白色に限定されるものではなく、銅合金と一体感のある色であればよい。具体的には、筐体１５の色は、マンセル表示系において明度が７以上の色が好ましい。これにより、筐体１５と銅合金が配置された通風路において、色の統一性を持たせることができる。明度が７以上の色としては、例えば、アイボリー色、ベージュ色、ブラウン色又はグレー色等が挙げられる。これらの色もホワイト色と同様に、筐体１５の材料となるベース樹脂材にカラー樹脂材を混ぜ込むことで調整される。また、他の例としては、筐体１５には、明度が７以上の色を用いた木目調の模様が配置されてもよい。木目調は、筐体１５となる樹脂材への塗装により形成される。なお、白色、アイボリー色などの色についても、塗装により形成されてもよい。 As such a first modification, the color of the housing 15 is not limited to white, and may be any color that gives a sense of unity with the copper alloy. Specifically, the color of the housing 15 preferably has a brightness of 7 or more in the Munsell display system. As a result, uniformity of color can be provided in the ventilation passage in which the housing 15 and the copper alloy are arranged. Examples of colors with a lightness of 7 or more include ivory, beige, brown, and gray. Similar to the white color, these colors are also adjusted by mixing the color resin material into the base resin material that is the material of the housing 15 . As another example, the housing 15 may be provided with a wood grain pattern using a color with a brightness of 7 or more. The wood grain tone is formed by coating the resin material that forms the housing 15 . Colors such as white and ivory may also be formed by painting.
　第２の変形例としては、第１上下風向板１２１においては、内面１２１ａだけでなく、外面１２１ｂにも銅合金を配置してもよい。第１上下風向板１２１の外面１２１ｂは、第１上下風向板１２１が開いた状態において、通風路の一部となる。したがって、銅合金を配置することにより、通風路を清潔に保つことができる。また、このように、外面１２１ｂに対し銅合金を配置することにより、第１上下風向板１２１が閉じた状態において、筐体１５の一部に、筐体１５とわずかに色の異なる銅合金が配置されることになり、筐体１５の色に対しアクセントとなるような意匠になる。 As a second modification, in the first vertical wind direction plate 121, a copper alloy may be arranged not only on the inner surface 121a but also on the outer surface 121b. The outer surface 121b of the first up-down wind direction plate 121 forms part of the ventilation passage when the first up-down direction plate 121 is open. Therefore, by arranging the copper alloy, the air passage can be kept clean. In addition, by arranging the copper alloy on the outer surface 121b in this way, when the first up-down wind direction plate 121 is closed, a part of the housing 15 has a copper alloy with a slightly different color from that of the housing 15. It will be arranged, and the design will be such that it accentuates the color of the housing 15 .
　第３の変形例としては、第１上下風向板１２１の端部にも銅合金を配置してもよい。筐体１５の色に対し、銅合金の色が第１上下風向板１２１の縁に沿って銅合金が見えることがアクセントとなるような意匠になり得る。第２上下風向板１２２においても同様であり、端部にも銅合金を配置してもよい。 As a third modified example, a copper alloy may also be arranged at the end of the first vertical wind direction plate 121 . The design can be such that the color of the copper alloy accentuates the color of the housing 15 so that the copper alloy can be seen along the edge of the first up/down wind direction plate 121 . The same applies to the second up-down wind direction plate 122, and a copper alloy may also be arranged at the end.
　第４の変形例としては、通風路のうち平面状の領域と、曲面状の領域と、に対し、ニッケル含有率の異なる銅合金を配置してもよい。より詳しくは、平面状の領域には、曲面状の領域に配置される銅合金よりもニッケル含有率の高い銅合金が用いられる。亜鉛を加えることにより、銅合金の剛性が増すため、亜鉛含有率の高い銅合金は、曲面状の領域に適した材料になる。一方で、平面状の領域に配置される銅合金においては、曲面状の領域に配置される銅合金に比べて、ニッケルの含有率を増やすことができる。例えば、第２上下風向板１２２やドレンパン１０４の下側面１０４ａに配置される銅合金のニッケルの含有率は、ケーシング１０９や第１上下風向板１２１に配置される銅合金のニッケルの含有率よりも高い。なお、第１上下風向板１２１の内面１２１ａ及び外面１２１ｂは、曲面状の領域であり、第２上下風向板１２２の内面１２２ａ及び外面１２２ｂは、平面状の領域である。また、ケーシング１０９は、曲面状の領域であり、ドレンパン１０４の下側面１０４ａは、平面状の領域である。 As a fourth modification, copper alloys with different nickel contents may be arranged in the planar region and the curved region of the ventilation passage. More specifically, a copper alloy having a higher nickel content than the copper alloy disposed in the curved region is used in the planar region. The addition of zinc increases the stiffness of copper alloys, making copper alloys with high zinc content suitable materials for curved areas. On the other hand, in the copper alloy arranged in the planar region, the nickel content can be increased compared to the copper alloy arranged in the curved region. For example, the nickel content of the copper alloy arranged on the second vertical wind direction plate 122 and the lower surface 104a of the drain pan 104 is higher than the nickel content of the copper alloy arranged on the casing 109 and the first vertical wind direction plate 121. expensive. The inner surface 121a and the outer surface 121b of the first up/down wind direction plate 121 are curved regions, and the inner surface 122a and the outer surface 122b of the second up/down wind direction plate 122 are flat regions. Further, the casing 109 is a curved area, and the lower surface 104a of the drain pan 104 is a planar area.
　第５の変形例としては、通風路は、銅合金に替えて、純銅を含んでもよい。この場合も、室内機１０の内部を清潔に保つことができる。 As a fifth modification, the ventilation passage may contain pure copper instead of the copper alloy. Also in this case, the inside of the indoor unit 10 can be kept clean.
　第６の変形例としては、通風路が銅合金に替えて純銅を含む場合には、筐体１５の色は、純銅とのマンセル表示系における明度の差が３以下の色であることが好ましい。このような筐体１５の色としては、アイボリー色、ベージュ色、ブラウン色又はグレー色等が挙げられる。また、他の例としては、筐体１５には、純銅との明度の差が３以下の色を用いた木目調の模様が配置されてもよい。 As a sixth modification, when the air passage contains pure copper instead of the copper alloy, the color of the housing 15 is preferably a color with a brightness difference of 3 or less from pure copper in the Munsell display system. . Examples of the color of such housing 15 include ivory color, beige color, brown color, gray color, and the like. As another example, the housing 15 may be provided with a wood grain pattern using a color with a brightness difference of 3 or less from that of pure copper.
１　空気調和機
１０　室内機
１１　リモコン通信部
１２　室内熱交換器
１３　室内ファン
１３ａ　室内ファン駆動部
１５　筐体
２０　室外機
２１　圧縮機
２１ａ　圧縮機モータ
２２　室外熱交換器
２３　室外ファン
２３ａ　室外ファン駆動部
２４　室外膨張弁
２５　四方弁
１０３ａ，１０３ｂ　フィルター装置
１０４　ドレンパン
１０４ａ　下側面
１０５　前面空気吸込口
１０７　左右風向板
１０９　ケーシング
１０９ａ　通風路面
１０９ｂ　先端部
１１０　内側背面
１１１　上面空気吸込口
１２１　第１上下風向板
１２１ａ　内面
１２１ｂ　外面
１２２　第２上下風向板
１２２ａ　内面
１２２ｂ　外面 1 air conditioner 10 indoor unit 11 remote control communication unit 12 indoor heat exchanger 13 indoor fan 13a indoor fan driving unit 15 housing 20 outdoor unit 21 compressor 21a compressor motor 22 outdoor heat exchanger 23 outdoor fan 23a outdoor fan driving unit 24 Outdoor expansion valve 25 Four- way valves 103a, 103b Filter device 104 Drain pan 104a Lower side 105 Front air suction port 107 Left/right airflow direction plate 109 Casing 109a Ventilation road surface 109b Tip part 110 Inner back surface 111 Upper surface air suction port 121 First up/down direction plate 121a Inner surface 121b outer surface 122 second vertical wind direction plate 122a inner surface 122b outer surface

Claims (17)

  1. 　熱交換器の下流側の通風路の少なくとも一部に銅又は銅合金を配置した室内機を備える、空気調和機。 An air conditioner equipped with an indoor unit in which copper or a copper alloy is arranged in at least part of the ventilation passage downstream of the heat exchanger.
  2. 　前記通風路に前記銅合金が配置され、
    　前記銅合金は、ニッケルを含む、請求項１に記載の空気調和機。     The copper alloy is arranged in the air passage,
    The air conditioner according to claim 1, wherein the copper alloy contains nickel.
  3. 　前記銅合金は、さらに亜鉛を含む、請求項２に記載の空気調和機。 The air conditioner according to claim 2, wherein the copper alloy further contains zinc.
  4. 　前記銅合金におけるニッケルの含有率は、１６．５質量％以上かつ７０質量％未満である、請求項２に記載の空気調和機。 The air conditioner according to claim 2, wherein the content of nickel in the copper alloy is 16.5% by mass or more and less than 70% by mass.
  5. 　前記銅合金における亜鉛の含有率は、１３．７質量％以上３８質量％未満である、請求項３に記載の空気調和機。 The air conditioner according to claim 3, wherein the content of zinc in the copper alloy is 13.7% by mass or more and less than 38% by mass.
  6. 　前記銅合金におけるニッケルの含有率は、亜鉛の含有率に比べて大きい、請求項３に記載の空気調和機。 The air conditioner according to claim 3, wherein the content of nickel in the copper alloy is greater than the content of zinc.
  7. 　前記銅合金における銅の含有率は、ニッケル及び亜鉛の含有率に比べて大きい、請求項６に記載の空気調和機。 The air conditioner according to claim 6, wherein the content of copper in the copper alloy is greater than the content of nickel and zinc.
  8. 　前記銅合金における銅の含有率は、６０質量％以上である、請求項５に記載の空気調和機。 The air conditioner according to claim 5, wherein the content of copper in the copper alloy is 60% by mass or more.
  9. 　前記銅合金は、Ｃ７５２１である、請求項１乃至３の何れか１項に記載の空気調和機。 The air conditioner according to any one of claims 1 to 3, wherein the copper alloy is C7521.
  10. 　前記銅合金は、モネルである、請求項１乃至３の何れか１項に記載の空気調和機。 The air conditioner according to any one of claims 1 to 3, wherein the copper alloy is Monel.
  11. 　前記通風路のうち、ケーシング、ドレンパンの下側の面、上下風向板、左右風向板及び室内ファンの少なくとも１つに、銅又は銅合金が配置される、請求項１乃至８の何れか１項に記載の空気調和機。 9. The ventilation passage according to any one of claims 1 to 8, wherein at least one of the casing, the lower surface of the drain pan, the vertical wind direction plate, the horizontal direction plate, and the indoor fan is made of copper or a copper alloy. The air conditioner described in .
  12. 　前記上下風向板のうち、閉じたときに内側に位置する面に銅又は銅合金が配置される、請求項１１に記載の空気調和機。 The air conditioner according to claim 11, wherein copper or a copper alloy is arranged on a surface of the vertical wind direction plate that is located inside when closed.
  13. 　前記上下風向板の端部を除く領域に、銅又は銅合金が配置される、請求項１１に記載の空気調和機。 The air conditioner according to claim 11, wherein copper or a copper alloy is arranged in a region of the vertical wind direction plate excluding the end portions.
  14. 　前記ケーシングのうち先端部を除く領域に、銅又は銅合金が配置される、請求項１１の何れか１項に記載の空気調和機。 The air conditioner according to any one of claims 11, wherein copper or a copper alloy is arranged in a region of the casing excluding the tip portion.
  15. 　少なくとも１つの前記上下風向板に配置された銅合金のニッケル含有率は、ケーシングに配置された銅合金のニッケル含有率よりも大きい、請求項２に記載の空気調和機。 The air conditioner according to claim 2, wherein the nickel content of the copper alloy arranged in at least one of the vertical wind direction plates is higher than the nickel content of the copper alloy arranged in the casing.
  16. 　マンセル表示系において明度が７以上の色の筐体をさらに備えた、請求項２に記載の空気調和機。 The air conditioner according to claim 2, further comprising a housing having a color whose brightness is 7 or more in the Munsell display system.
  17. 　前記通風路に純銅が配置され、
    　純銅とのマンセル表示系における明度の差が３以下の色の筐体をさらに備えた、請求項１に記載の空気調和機。     Pure copper is placed in the air passage,
    2. The air conditioner according to claim 1, further comprising a housing having a color with a brightness difference of 3 or less from pure copper in the Munsell display system.
PCT/JP2021/031434 2021-08-27 2021-08-27 Air conditioner WO2023026450A1 (en)

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