JP7232986B2 - ceiling embedded air conditioner - Google Patents

ceiling embedded air conditioner Download PDF

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Publication number
JP7232986B2
JP7232986B2 JP2019060092A JP2019060092A JP7232986B2 JP 7232986 B2 JP7232986 B2 JP 7232986B2 JP 2019060092 A JP2019060092 A JP 2019060092A JP 2019060092 A JP2019060092 A JP 2019060092A JP 7232986 B2 JP7232986 B2 JP 7232986B2
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air
ceiling
outlet
airflow
air conditioner
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JP2020159637A (en
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明広 重田
章吾 清水
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Priority to JP2019060092A priority Critical patent/JP7232986B2/en
Priority to EP20157694.9A priority patent/EP3715730A1/en
Priority to CN202010098648.2A priority patent/CN111750436B/en
Publication of JP2020159637A publication Critical patent/JP2020159637A/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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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

Description

本発明は、たとえば複数個の吹出口を有する天井埋め込み形空気調和機において、各吹出口の出口に風向制御の手段として備えた風向偏向板に関するものである。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction deflection plate provided at the exit of each outlet as a means for controlling the direction of wind in, for example, a ceiling-embedded air conditioner having a plurality of outlets.

従来、この種の天井埋め込み形空気調和機１００は図６に示すように、筐体１０１と、筐体１０１の底面に備えられ、複数個の吹出口１０２と、吸込口１０３と、風向偏向板１０４とを有する化粧パネル１０５とで構成されたものがある（例えば、特許文献１参照）。 Conventionally, a ceiling-embedded air conditioner 100 of this type is provided with a housing 101, a bottom surface of the housing 101, and a plurality of outlets 102, a suction port 103, and a wind direction deflection plate, as shown in FIG. 104 and a decorative panel 105 (see, for example, Patent Document 1).

図７（ａ）は、前記公報に記載された従来の天井埋め込み形空気調和機の図６のＸ－Ｘ’断面における化粧パネルの使用する吹出口近傍の部分断面視図を示すものである。図７（ｂ）は、前記公報に記載された従来の天井埋め込み形空気調和機の図６のＸ－Ｘ’断面における化粧パネルの使用しない吹出口近傍の部分断面視図を示すものである。 FIG. 7(a) is a partial cross-sectional view of the vicinity of the outlet used by the decorative panel in the XX' section of FIG. 6 of the conventional ceiling-embedded air conditioner described in the publication. FIG. 7(b) is a partial cross-sectional view of the vicinity of the air outlet where the decorative panel is not used in the XX' cross section of FIG. 6 of the conventional ceiling-embedded air conditioner described in the above publication.

図７に示すように、化粧パネル１０５の吹出口１０２の近傍は、内部風路１０２ａと、使用しない吹出口１０２の上流側に備えた吹出し空気遮断用部材１０６と、吹出口１０２で化粧パネル１０５の表面付近に、使用しない吹出口１０２を全閉できる略フラットな風向偏向板１０４とを設けたことで、化粧パネル１０５の外観から容易に吹出口１０２の使用の有無を判別できると共に、各吹出口１０２ごとに風向を調整でき、人的、物的に快適性の向上が図ることができる。 As shown in FIG. 7, in the vicinity of the outlet 102 of the decorative panel 105, there are an internal air passage 102a, a member 106 for blocking the blown air provided upstream of the unused outlet 102, and the decorative panel 105 at the outlet 102. By providing a substantially flat wind direction deflection plate 104 that can fully close the unused outlet 102 near the surface of the decorative panel 105, it can be easily determined from the appearance of the decorative panel 105 whether or not the outlet 102 is used. The wind direction can be adjusted for each outlet 102, and comfort for people and materials can be improved.

特開２０００－２０５６４２号公報JP-A-2000-205642

しかしながら、前記従来の構成では、図８に示すように吹出口１０２使用中の化粧パネル１０５の吹出口１０２近傍の部分断面において、風向偏向板１０４が開く角度が小さい場合に、内部風路１０２ａを通る気流Ｗが風向偏向板１０４の室内から見える面Ｚ（表面部）に沿わず剥離が生じるため、例えば、冷房運転を行ったときに、冷気で冷やされた風向偏向板１０４の温度と、高温多湿の室内空気Ｗ’との温度差から、面Ｚに結露が生じてしまうという課題を有していた。 However, in the above-described conventional configuration, as shown in FIG. 8, in a partial cross section near the outlet 102 of the decorative panel 105 when the outlet 102 is in use, when the opening angle of the air deflector 104 is small, the internal air passage 102a is closed. Since the passing airflow W is not along the surface Z (surface portion) of the airflow deflector 104 that can be seen from inside the room, separation occurs. There is a problem that dew condensation occurs on the surface Z due to the temperature difference with the humid indoor air W'.

前記従来の課題を解決するために、本発明の天井埋め込み形空気調和機は、吹出口を備え、吹出口は内側風路と外側風路から構成されるとともに、内側風路は上流側の平面部と下流側の曲面部から構成され、曲面部の端部に複数の突起を備えたことを特徴としたものである。 In order to solve the above-described conventional problems, the ceiling-embedded air conditioner of the present invention is provided with an air outlet, wherein the outlet is composed of an inner air duct and an outer air duct, and the inner air duct is on a plane on the upstream side. and a curved surface portion on the downstream side.

これによって、吹出口の突起に衝突した流れが縦渦を生成し、風向偏向板の表面部（下面側）に沿って流れる。 As a result, the flow that collides with the projection of the outlet generates a vertical vortex and flows along the surface (lower surface) of the air deflector.

従って、天井埋め込み形空気調和機のように吹出口の上流から略鉛直方向に流れる空気を、吹出口の内側風路から風向偏向板へガイドして吹き出すこととなる。 Therefore, as in a ceiling-embedded air conditioner, the air flowing substantially vertically from the upstream side of the outlet is guided from the inner air passage of the outlet to the air deflector and blown out.

よって、吹出口の風向偏向板の開口面積が小さい、すなわち開く角度が小さい場合でも、風向偏向板の表面部（下面側）から剥離することなく、空気を流すこととなる。 Therefore, even if the opening area of the airflow direction deflector of the outlet is small, that is, even if the opening angle is small, the air will flow without being separated from the surface portion (lower surface side) of the airflow direction deflector.

本発明の天井埋め込み形空気調和機は、冷房運転時の風向偏向板の開く角度が小さい場合でも風向偏向板に沿った空気の流れとなり、冷房運転時の風向偏向板の表面部（下面側）の空気の流れの剥離に起因する結露を防止することができる。 In the ceiling-embedded air conditioner of the present invention, even if the opening angle of the air deflector plate during cooling operation is small, the air flows along the air deflector plate during cooling operation. Condensation due to air flow separation can be prevented.

本発明の第１の実施の形態における天井埋め込み形空気調和機の斜視図1 is a perspective view of a ceiling-embedded air conditioner according to a first embodiment of the present invention; 本発明の第１の実施の形態における天井埋め込み形空気調和機のＡ-Ａ’断面図A-A' cross-sectional view of the ceiling-embedded air conditioner according to the first embodiment of the present invention 本発明の第１の実施の形態における天井埋め込み形空気調和機の使用する吹出口の部分断面斜視図および部分拡大図1 is a partial cross-sectional perspective view and a partial enlarged view of an air outlet used in a ceiling-embedded air conditioner according to a first embodiment of the present invention; FIG. 本発明の第１の実施の形態における天井埋め込み形空気調和機の図１のＡ－Ａ’断面における化粧パネルの吹出口近傍の部分断面視図および部分拡大図FIG. 1 is a partial cross-sectional view and a partial enlarged view of the vicinity of the outlet of the decorative panel in the A-A′ cross section of FIG. 1 of the ceiling-embedded air conditioner according to the first embodiment of the present invention. 本発明の第２の実施の形態における天井埋め込み形空気調和機の使用する吹出口の部分断面斜視図および部分拡大図FIG. 10 is a partial cross-sectional perspective view and a partial enlarged view of an air outlet used in a ceiling-embedded air conditioner according to a second embodiment of the present invention; 従来の天井埋め込み形空気調和機の斜視図Perspective view of a conventional ceiling-embedded air conditioner （ａ）従来の天井埋め込み形空気調和機の図６のＸ－Ｘ’断面における化粧パネルの使用する吹出口近傍の部分断面視図（ｂ）従来の天井埋め込み形空気調和機の図６のＸ－Ｘ’断面における化粧パネルの使用しない吹出口近傍の部分断面視図(a) Partial cross-sectional view near the outlet used by the decorative panel in the XX' cross section of FIG. 6 of the conventional ceiling-embedded air conditioner (b) X of FIG. 6 of the conventional ceiling-embedded air conditioner Partial cross-sectional view of the vicinity of the outlet where the decorative panel is not used in the -X' cross section 従来の天井埋め込み形空気調和機の図６のＸ－Ｘ’断面における化粧パネルの吹出口近傍の気流の説明図Explanatory drawing of the airflow near the outlet of the decorative panel in the XX' section of FIG. 6 of the conventional ceiling-embedded air conditioner

第１の発明は、天井に埋設される筐体と、前記筐体の底面に設けられた化粧パネルと、前記化粧パネルに設けられ、前記筐体の内部に室内の空気を吸い込む吸込口と、前記吸込口から前記筐体の内部に吸い込んだ空気を室内へ吹き出す吹出口と、前記吹出口に設けられ、一端が回転軸により回動して風向制御する風向偏向板とを備えた天井埋め込み形空気調和機において、前記吹出口は内側風路と外側風路から構成されるとともに、前記内側風路は上流側の平面部と下流側の曲面部から構成され、前記曲面部の端部に複数の突起を備えたことを特徴としたものである。 A first invention includes a housing embedded in a ceiling, a decorative panel provided on the bottom surface of the housing, an air inlet provided in the decorative panel for sucking indoor air into the housing, Ceiling-embedded type comprising: a blowout port for blowing out into the room the air sucked into the inside of the housing from the suction port; In the air conditioner, the outlet includes an inner air passage and an outer air passage, and the inner air passage includes an upstream flat portion and a downstream curved surface portion, and a plurality It is characterized by having a protrusion of

これによって、吹出口の突起に衝突した流れが縦渦を生成し、風向偏向板の表面に沿って流れる。 As a result, the flow that collides with the projection of the outlet generates a vertical vortex and flows along the surface of the wind deflector.

従って、天井埋め込み形空気調和機のように吹出口の上流から略鉛直方向に流れる空気を、吹出口の内側風路から風向偏向板へガイドして吹き出すこととなり、吹出口の風向偏向板の開口面積が小さい、すなわち開く角度が小さい場合でも、風向偏向板の表面部（下面側）から剥離することなく、空気を流すこととなる。 Therefore, as in a ceiling-embedded air conditioner, the air flowing from the upstream side of the air outlet in a substantially vertical direction is guided from the inner air passage of the air outlet to the air deflector and blown out. Even if the area is small, that is, if the opening angle is small, the air will flow without being separated from the surface portion (lower surface side) of the wind direction deflector.

よって、冷房運転時の風向偏向板の開く角度が小さい場合でも風向偏向板に沿った空気の流れとなり、冷房運転時の風向偏向板の表面部（下面側）の空気の流れの剥離に起因する結露を防止することができる。 Therefore, even if the opening angle of the air deflector is small during cooling operation, air flows along the air deflector, resulting in separation of the air flow on the surface (lower side) of the air deflector during cooling operation. Condensation can be prevented.

第２の発明は、前記複数の突起の表面は、前記複数の突起よりさらに小さい複数の凹凸部を備えたことを特徴としたものである。 A second aspect of the invention is characterized in that the surfaces of the plurality of projections are provided with a plurality of uneven portions that are smaller than the plurality of projections.

これによって、気流が突起に衝突した際の抵抗を減らすこととなるとともに、突起の壁
面近傍に生成された細かな渦によって突起に沿う流れが維持され、上流側で生成した縦渦が隣で生成された縦渦と合成されないこととなる。 This reduces the resistance when the airflow collides with the projection, and the flow along the projection is maintained by the fine vortex generated near the wall surface of the projection, and the longitudinal vortex generated on the upstream side is generated next to it. It will not be synthesized with the longitudinal vortex.

従って、特に風速が早い場合でも、突起による抵抗を低減しつつ突起で生成された縦渦を確実に風向偏向板に到達させて、風向偏向板の表面部（下面側）への流れを生成することとなる。 Therefore, even when the wind speed is particularly high, the longitudinal vortices generated by the protrusions can reliably reach the wind deflector while reducing the resistance of the protrusions, thereby generating a flow toward the surface (lower surface) of the wind deflector. It will happen.

よって、特に風速が早い急風時でも、風向偏向板に沿った空気の流れとなり、冷房運転時の風向偏向板の表面部（下面側）の空気の流れの剥離に起因する結露を防止することができる。 Therefore, even when the wind speed is high and the wind is gusty, the air flows along the wind direction deflector, preventing dew condensation caused by air flow separation on the surface (lower side) of the wind direction deflector during cooling operation. can be done.

第３の発明は、前記複数の突起は、前記突起の法線方向からみた形状を、流れ方向が長軸となる略楕円としたことを特徴としたものである。 A third aspect of the invention is characterized in that the plurality of projections have a substantially elliptical shape when viewed from the normal direction of the projections, the major axis being in the flow direction.

これによって、流れ方向が長軸となる楕円形にすることで、円形などと比べて突起に衝突した際にスケールの小さい縦渦を生成するとともに、長軸によって気流をガイドすることとなる。 As a result, the elliptical shape with the flow direction as the major axis generates a vertical vortex with a smaller scale when it collides with a protrusion compared to a circular vortex, and the major axis guides the airflow.

従って、特に縦渦が生じにくい低風量な場合でも、突起で生成した縦渦を確実に風向偏向板の表面部（下面側）に搬送することとなる。 Therefore, even in the case of a low air flow rate in which vertical vortices are less likely to occur, the vertical vortices generated by the projections are reliably conveyed to the surface portion (lower surface side) of the air deflector.

よって、冷房運転時の風向偏向板の開く角度が小さく、特に風速が遅い弱風時でも、風向偏向板に沿った空気の流れとなり、冷房運転時の風向偏向板の表面部（下面側）の空気の流れの剥離に起因する結露を防止することができる。 Therefore, the opening angle of the air deflector is small during cooling operation, and even when the wind speed is particularly low and the wind is weak, the air flows along the air deflector. Condensation due to air flow separation can be prevented.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によってこの発明が限定されるものではない。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

（実施の形態１）
図１は本発明の第１の実施の形態における天井埋め込み形空気調和機の斜視図を示すものである。 (Embodiment 1)
FIG. 1 shows a perspective view of a ceiling-embedded air conditioner according to a first embodiment of the present invention.

また、図２は本発明の第１の実施の形態における天井埋め込み形空気調和機の図１におけるＡ-Ａ’断面視図を示すものである。 FIG. 2 is a cross-sectional view of the ceiling-embedded air conditioner according to the first embodiment of the present invention taken along the line A-A' in FIG.

図３は本発明の第１の実施の形態における天井埋め込み形空気調和機の使用する吹出口の部分断面斜視図および部分拡大図を示すものである。 FIG. 3 shows a partial cross-sectional perspective view and a partial enlarged view of an outlet used in the ceiling-embedded air conditioner according to the first embodiment of the present invention.

また、図４は本発明の第１の実施の形態における天井埋め込み形空気調和機の図１のＡ－Ａ’断面における化粧パネルの吹出口近傍の部分断面視図および部分拡大図を示すものである。 4 shows a partial cross-sectional view and a partial enlarged view of the air outlet vicinity of the decorative panel in the AA' cross section of FIG. 1 of the ceiling-embedded air conditioner according to the first embodiment of the present invention. be.

図１において天井埋め込み形空気調和機１は、筐体２と、筐体２の底面に備えられ、複数個の吹出口３と、吸込口４と、風向偏向板５とを有する化粧パネル６とで構成されている。 In FIG. 1, a ceiling-embedded air conditioner 1 includes a housing 2, and a decorative panel 6 provided on the bottom surface of the housing 2 and having a plurality of air outlets 3, an air inlet 4, and a wind deflector 5. consists of

また、図２において天井埋め込み形空気調和機１の内部は、遠心送風機７と、遠心送風機７を駆動するモータ８と、グリル４ａおよびフィルター４ｂから構成されている吸込口４と、吸込口４から流入する気流Ｗを遠心送風機７に誘引するオリフィス９と、遠心送風機７を囲うように配設された熱交換器１０と、熱交換器１０を支えるとともに、筐体２側
で吹出口３の内部風路３ａの一部を形成するドレンパン１１と、筐体２の内面に配設され、吹出口３の内部風路３ａの一部を形成する内部断熱材１２とで構成されている。 2, the interior of the ceiling-embedded air conditioner 1 includes a centrifugal fan 7, a motor 8 for driving the centrifugal fan 7, a suction port 4 composed of a grill 4a and a filter 4b, and from the suction port 4 An orifice 9 for inducing the inflowing airflow W to the centrifugal blower 7, a heat exchanger 10 arranged so as to surround the centrifugal blower 7, and supporting the heat exchanger 10, the inside of the blowout port 3 on the housing 2 side It is composed of a drain pan 11 that forms part of the air passage 3a and an internal heat insulating material 12 that is arranged on the inner surface of the housing 2 and forms part of the internal air passage 3a of the outlet 3. As shown in FIG.

天井埋め込み形空気調和機１は、天井５０の凹部に吊りボルト５１で吊り下げられて設置される。 The ceiling-embedded air conditioner 1 is installed in a concave portion of the ceiling 50 by being suspended by suspension bolts 51 .

また、図３に示すように吹出口３は、内側風路１３と、外側風路１４と、風向偏向板５と、風向偏向板５を回動させるモータ１６とで構成され、内側風路１３は、上流側の平面部１３ａと下流側の曲面部１３ｂから構成されている。そして曲面部１３ｂの端部には、複数の突起１５が設けられ、気流Ｗの流れ方向が長軸となる略楕円形状となっているとともに、表面には突起１５より小さい凹凸部１５ａが備えられている。 As shown in FIG. 3, the outlet 3 is composed of an inner air passage 13, an outer air passage 14, an air deflector 5, and a motor 16 for rotating the air deflector 5. is composed of a flat portion 13a on the upstream side and a curved portion 13b on the downstream side. A plurality of projections 15 are provided at the end of the curved surface portion 13b, and the curved surface portion 13b has a substantially elliptical shape with the flow direction of the airflow W as a major axis. ing.

そして、図４に示すように風向偏向板５は、表面部５ａ、裏面部５ｂおよび、モータ１６が接続される回動軸部５ｃより構成されている。 As shown in FIG. 4, the wind direction deflection plate 5 is composed of a front surface portion 5a, a rear surface portion 5b, and a rotating shaft portion 5c to which the motor 16 is connected.

以上のように構成された天井埋め込み形空気調和機について、以下その動作、作用を説明する。 The operation and function of the ceiling-embedded air conditioner configured as described above will be described below.

まず図２に示すように、モータ８によって遠心送風機７が回転することで、室内（大気圧）と天井埋め込み形空気調和機１の内部との圧力差によって気流Ｗが生じ、グリル４ａ、フィルター４ｂ、オリフィス９の順に気流が遠心送風機７へ誘引される。
その後、遠心送風機７から吹き出された気流Ｗは、熱交換器１０にて暖房運転では加熱され、冷房運転では冷却されたのちに内部風路３ａを通り、風向偏向板５が回動し、開口している吹出口３から室内へ吹き出される。 First, as shown in FIG. 2, when the centrifugal blower 7 is rotated by the motor 8, an air flow W is generated due to the pressure difference between the room (atmospheric pressure) and the interior of the ceiling-embedded air conditioner 1, and the grill 4a and the filter 4b. , orifice 9 to the centrifugal blower 7 .
After that, the airflow W blown out from the centrifugal blower 7 is heated in the heat exchanger 10 in the heating operation and cooled in the cooling operation, then passes through the internal air passage 3a, the airflow direction deflection plate 5 rotates, and the airflow W is opened. The air is blown out into the room from the air outlet 3 that is open.

また図３および図４に示すように、風向偏向板５はモータ１６を回動方向Ｃに回動させることで吹出口３の開口面積を変化させるとともに、吹出し方向を変化させる。 Further, as shown in FIGS. 3 and 4, the wind direction deflection plate 5 rotates the motor 16 in the rotation direction C to change the opening area of the blower outlet 3 and change the blowing direction.

そこで冷房運転のように風向偏向板５の開口面積が小さい場合に、これまで風向偏向板５の表面部５ａから剥離していた気流を、突起１５で縦渦を生成することで、曲面部１３ｂ近傍を流れる気流を増やして、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えることとなる。 Therefore, when the opening area of the airflow direction deflection plate 5 is small, such as in cooling operation, the airflow that has been separated from the surface portion 5a of the airflow direction deflection plate 5 is generated by the projections 15 to generate a longitudinal vortex, and the curved surface portion 13b By increasing the airflow flowing in the vicinity, the flow direction of the airflow is changed so as to follow the surface portion 5a of the wind deflector plate 5. FIG.

以上のように、本実施の形態においては曲面部１３ｂの端部に複数の突起１５を備えたことにより、風向偏向板５の開口面積が小さい場合に、これまで風向偏向板５の表面部５ａから剥離していた気流を、突起１５で縦渦を生成することで、曲面部１３ｂ近傍を流れる気流を増やして、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えることとなる。 As described above, in the present embodiment, since the plurality of projections 15 are provided at the end of the curved surface portion 13b, the surface portion 5a of the wind direction deflector plate 5 can be reduced when the opening area of the wind direction deflector plate 5 is small. By generating a vertical vortex in the airflow separated from the airflow by the protrusion 15, the airflow flowing near the curved surface portion 13b is increased and the direction of the airflow is changed so as to follow the surface portion 5a of the wind deflector plate 5. becomes.

よって、冷房運転時の風向偏向板５の開く角度が小さい場合でも風向偏向板５に沿った空気の流れとなり、冷房運転時の風向偏向板５の表面部５ａの空気の流れの剥離に起因する結露を防止することができる。 Therefore, even if the opening angle of the airflow direction deflection plate 5 during cooling operation is small, the air flows along the airflow direction deflection plate 5, resulting in separation of the air flow on the surface portion 5a of the airflow direction deflection plate 5 during cooling operation. Condensation can be prevented.

また、気流Ｗの方向を変えるのに必要な力が流速に比例することから、本実施の形態における流速Ｖｗは、図１における吹出口３の幅Ｌに対して、Ｖｗ＝１．０Ｌ～３．０Ｌ程度になる。 Further, since the force required to change the direction of the airflow W is proportional to the flow velocity, the flow velocity Vw in the present embodiment is Vw=1.0 L to 3 .0L.

従って、本実施の形態の突起１５の大きさは、流れ方向が長軸となる略楕円として、図１における吹出口３の幅Ｌに対して、長軸Ｌ１は０.００５Ｌ～０.０２Ｌ、短軸Ｌ２は０.００１Ｌ～０.０１Ｌ、高さｈは０.００１Ｌ～０.０１Ｌ、吹出口３の幅方向の突起１５
同士の間隔Ｐは、吹出口３の幅Ｌに対して、０.０２５Ｌ～０.０７５Ｌとすることで、突起１５による気流の抵抗を過度に増加させることなく、突起１５で縦渦を生成することで、曲面部１３ｂ近傍を流れる気流を増やして、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えることとなる。 Therefore, the size of the protrusion 15 of this embodiment is approximately elliptical with the major axis in the flow direction, and the major axis L1 is 0.005L to 0.02L with respect to the width L of the outlet 3 in FIG. The minor axis L2 is 0.001L to 0.01L, the height h is 0.001L to 0.01L, and the protrusion 15 in the width direction of the outlet 3
The distance P between them is 0.025L to 0.075L with respect to the width L of the outlet 3, so that the projections 15 generate longitudinal vortices without excessively increasing the airflow resistance of the projections 15. As a result, the airflow flowing in the vicinity of the curved surface portion 13b is increased, and the flow direction of the airflow is changed so as to follow the surface portion 5a of the wind deflector plate 5. FIG.

また、本実施の形態では、突起１５の表面は、複数の突起よりさらに小さい複数の凹凸部１５ａを備えたことで、気流が突起１５に衝突した際の抵抗を減らすこととなるとともに、突起１５の壁面近傍に生成された細かな渦によって突起１５に沿う流れが維持され、上流側で生成した縦渦が隣で生成された縦渦と合成されないこととなる。 In addition, in the present embodiment, the surface of the protrusion 15 is provided with a plurality of uneven portions 15a that are smaller than the plurality of protrusions. The flow along the projection 15 is maintained by fine vortices generated near the wall surface of , and longitudinal vortices generated on the upstream side are not combined with longitudinal vortices generated adjacently.

従って、特に風速が早い場合でも、突起１５による抵抗を低減しつつ突起１５で生成された縦渦を確実に風向偏向板５に到達させて、風向偏向板５の表面部（下面側）５ａへの流れを生成することとなる。 Therefore, even when the wind speed is particularly high, the longitudinal vortices generated by the projections 15 can be reliably made to reach the wind deflector plate 5 while reducing the resistance by the projections 15, and can reach the surface portion (lower surface side) 5a of the wind deflector plate 5. will generate a flow of

よって、特に風速が早い急風時でも、風向偏向板５に沿った空気の流れとなり、冷房運転時の風向偏向板５の表面部（下面側）５ａの空気の流れの剥離に起因する結露を防止することができる。 Therefore, even when the wind speed is particularly high and the wind is gusty, the air flows along the airflow direction deflector 5, and dew condensation caused by separation of the air flow on the surface (lower surface side) 5a of the airflow direction deflector 5 during cooling operation is prevented. can be prevented.

また、本実施の形態では、突起１５の形状を流れ方向が長軸となる略楕円形状としたことで、円形などと比べて突起１５に衝突した際にスケールの小さい渦を生成するとともに、長軸によって気流をガイドすることとなる。 In addition, in the present embodiment, the projections 15 are formed in a substantially elliptical shape whose major axis is in the direction of flow. The shaft guides the airflow.

従って、特に縦渦が生じにくい低風量な場合でも、突起１５で生成した縦渦を確実に風向偏向板５の表面部（下面側）５ａに搬送することとなる。 Therefore, even in the case of a low air flow rate in which vertical vortices are less likely to occur, the vertical vortices generated by the protrusions 15 are reliably conveyed to the surface portion (lower surface side) 5a of the wind deflector plate 5. FIG.

よって、冷房運転時の風向偏向板の開く角度が小さく、特に風速が遅い弱風時でも、風向偏向板に沿った空気の流れとなり、冷房運転時の風向偏向板の表面部（下面側）の空気の流れの剥離に起因する結露を防止することができる。 Therefore, the opening angle of the air deflector is small during cooling operation, and even when the wind speed is particularly low and the wind is weak, the air flows along the air deflector. Condensation due to air flow separation can be prevented.

また本実施の形態の突起１５同士の間隔Ｐを不等間隔とすることで、突起１５が生成する縦渦のスケールを不均一にすることとなり、吹出口３で生じる騒音の特定の周波数帯でのピークを抑制して騒音を低下することができる。 In addition, by making the interval P between the protrusions 15 in this embodiment unequal, the scale of the longitudinal vortex generated by the protrusions 15 is made uneven, and the noise generated at the outlet 3 has a specific frequency band. noise can be reduced by suppressing the peak of

また本実施の形態では突起１５の数は、間隔Ｐが保たれていれば特に限定されず、吹出口３から吹き出す風量によって、突起１５による気流の圧損を過度に増加させることなく、突起１５で縦渦を生成して曲面部１３ｂ近傍を流れる気流を増やし、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えられる個数が変化する。 In the present embodiment, the number of projections 15 is not particularly limited as long as the distance P is maintained. A vertical vortex is generated to increase the amount of airflow flowing near the curved surface portion 13b, and the number of the airflow direction changeable along the surface portion 5a of the wind deflector plate 5 changes.

（実施の形態２）
図５は本発明の第２の実施の形態における天井埋め込み形空気調和機の使用する吹出口の部分断面斜視図および部分拡大図を示すものである。なお、実施の形態１と同じ部分または相当する部分には同じ符号を付し、一部の説明を省略する。 (Embodiment 2)
FIG. 5 shows a partial cross-sectional perspective view and a partial enlarged view of an air outlet used in a ceiling-embedded air conditioner according to a second embodiment of the present invention. Parts that are the same as or correspond to those in the first embodiment are denoted by the same reference numerals, and part of the description is omitted.

図５に示すように複数の突起１５は、吹出口３の両端からそれぞれ、０．３Ｌ以下の距離の間に間隔Ｐで備えられている。 As shown in FIG. 5, the plurality of protrusions 15 are provided at intervals P within a distance of 0.3L or less from both ends of the outlet 3, respectively.

以上のように構成された天井埋め込み形空気調和機について、以下その動作、作用を説明する。 The operation and function of the ceiling-embedded air conditioner configured as described above will be described below.

冷房運転のように風向偏向板５の開口面積が小さく、風速が遅い場合、曲面部１３ｂで
のコアンダ効果（曲面に沿う慣性力）が弱くなり、風向偏向板５の表面部（下面側）５ａに沿う流れが発生しづらくなる。 When the opening area of the wind direction deflector 5 is small and the wind speed is low, as in cooling operation, the Coanda effect (inertial force along the curved surface) at the curved surface portion 13b is weakened, and the surface portion (lower surface side) 5a of the wind direction deflector 5 is weakened. It becomes difficult to generate a flow along the

そこで、これまで風向偏向板５の表面部５ａから剥離していた気流を、吹出口３の両端付近に備えた突起１５で縦渦を生成することで、曲面部１３ｂ近傍を流れる気流を増やして、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えることとなる。 Therefore, by generating a longitudinal vortex with the protrusions 15 provided near both ends of the outlet 3, the airflow that has been separated from the surface portion 5a of the wind deflector plate 5 is increased to increase the airflow flowing near the curved surface portion 13b. , the flow direction of the airflow is changed so as to follow the surface portion 5a of the airflow direction deflection plate 5. As shown in FIG.

以上のように、本実施の形態においては吹出口３の両端からそれぞれ、０．３Ｌ以下の距離の間に間隔Ｐで備えたことにより、風速の遅い領域に負圧域を生成することとなり、風向偏向板５の表面部（下面側）５ａに向かう流れを生成することとなる。 As described above, in the present embodiment, a negative pressure region is generated in a region where the wind speed is slow by providing a space P at a distance of 0.3 L or less from both ends of the air outlet 3, A flow directed toward the surface portion (lower surface side) 5a of the wind direction deflector 5 is generated.

よって、特に風速が遅い弱風時でも、風向偏向板５の表面部（下面側）５ａに沿った空気の流れとなり、冷房運転時の風向偏向板５の表面部（下面側）５ａの空気の流れの剥離に起因する結露を防止することができる。 Therefore, even when the wind speed is particularly low and the wind is weak, the air flows along the surface portion (lower surface side) 5a of the wind direction deflector plate 5, and the air flow along the surface portion (lower surface side) 5a of the wind direction deflector plate 5 during cooling operation. Condensation due to flow separation can be prevented.

また、気流Ｗの方向を変えるのに必要な力が流速に比例することから、本実施の形態における流速Ｖｗは、図１における吹出口３の幅Ｌに対して、Ｖｗ＝１．０Ｌ～３．０Ｌ程度になる。 Further, since the force required to change the direction of the airflow W is proportional to the flow velocity, the flow velocity Vw in the present embodiment is Vw=1.0 L to 3 .0L.

従って、本実施の形態の突起１５の大きさは、流れ方向が長軸となる略楕円として、図１における吹出口３の幅Ｌに対して、長軸Ｌ１は０.００５Ｌ～０.０２Ｌ、短軸Ｌ２は０.００１Ｌ～０.０１Ｌ、高さｈは０.００１Ｌ～０.０１Ｌ、吹出口３の幅方向の突起１５同士の間隔Ｐは、吹出口３の幅Ｌに対して、０.０２５Ｌ～０.０７５Ｌとすることで、突起１５による気流の抵抗を過度に増加させることなく、突起１５で縦渦を生成することで、曲面部１３ｂ近傍を流れる気流を増やして、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えることとなる。 Therefore, the size of the protrusion 15 of this embodiment is approximately elliptical with the major axis in the flow direction, and the major axis L1 is 0.005L to 0.02L with respect to the width L of the outlet 3 in FIG. The short axis L2 is 0.001L to 0.01L, the height h is 0.001L to 0.01L, and the interval P between the protrusions 15 in the width direction of the blowout port 3 is 0 with respect to the width L of the blowout port 3. 0.025L to 0.075L, the projections 15 generate a vertical vortex without excessively increasing the airflow resistance of the projections 15, thereby increasing the airflow flowing in the vicinity of the curved surface portion 13b. The flow direction of the air current is changed so as to follow the surface portion 5 a of 5 .

また、本実施の形態では、突起１５の表面は、複数の突起よりさらに小さい複数の凹凸部１５ａを備えたことで、突起１５の壁面近傍に生成された細かな渦によって突起１５に沿う流れが維持され、上流側で生成した縦渦が隣で生成された縦渦と合成されないこととなる。 In addition, in the present embodiment, the surface of the projection 15 is provided with a plurality of uneven portions 15a smaller than the plurality of projections. The longitudinal vortex generated upstream is not combined with the longitudinal vortex generated next to it.

従って、突起１５による抵抗を低減しつつ突起１５で生成された縦渦を確実に風向偏向板５に到達させて、風向偏向板５の表面部（下面側）５ａへの流れを生成することとなる。 Therefore, the vertical vortex generated by the protrusions 15 can be reliably made to reach the wind deflector plate 5 while reducing the resistance of the protrusions 15, thereby generating a flow to the surface portion (lower surface side) 5a of the wind deflector plate 5. Become.

よって、風向偏向板５に沿った空気の流れとなり、冷房運転時の風向偏向板５の表面部（下面側）５ａの空気の流れの剥離に起因する結露を防止することができる。 Therefore, the air flows along the airflow direction deflection plate 5, and dew condensation due to separation of the air flow on the surface portion (lower surface side) 5a of the airflow direction deflection plate 5 during cooling operation can be prevented.

また、本実施の形態では、突起１５の形状を流れ方向が長軸となる略楕円形状としたことで、円形などと比べて突起１５に衝突した際にスケールの小さい渦を生成するとともに、長軸によって気流をガイドすることとなる。 In addition, in the present embodiment, the projections 15 are formed in a substantially elliptical shape whose major axis is in the direction of flow. The shaft guides the airflow.

従って、特に縦渦が生じにくい低風量な場合でも、突起１５で生成した縦渦を確実に風向偏向板５の表面部（下面側）５ａに搬送することとなる。 Therefore, even in the case of a low air flow rate in which vertical vortices are less likely to occur, the vertical vortices generated by the protrusions 15 are reliably conveyed to the surface portion (lower surface side) 5a of the wind deflector plate 5. FIG.

よって、冷房運転時の風向偏向板５の開く角度が小さく、特に風速が遅い弱風時でも、風向偏向板に沿った空気の流れとなり、冷房運転時の風向偏向板の表面部（下面側）の空気の流れの剥離に起因する結露を防止することができる。 Therefore, the opening angle of the airflow deflector 5 during cooling operation is small, and even when the wind speed is particularly low and the wind is weak, the air flows along the airflow deflector, and the surface portion (lower surface side) of the airflow deflector during cooling operation. Condensation due to air flow separation can be prevented.

また本実施の形態の突起１５同士の間隔Ｐを不等間隔とすることで、突起１５が生成する縦渦のスケールを不均一にすることとなり、吹出口３で生じる騒音の特定の周波数帯でのピークを抑制して騒音を低下することができる。 In addition, by making the interval P between the protrusions 15 in this embodiment unequal, the scale of the longitudinal vortex generated by the protrusions 15 is made uneven, and the noise generated at the outlet 3 has a specific frequency band. noise can be reduced by suppressing the peak of

また本実施の形態では突起１５の数は、間隔Ｐが保たれていれば特に限定されず、吹出口３から吹き出す風量によって、突起１５による気流の圧損を過度に増加させることなく、突起１５で縦渦を生成して曲面部１３ｂ近傍を流れる気流を増やし、風向偏向板５の表面部５ａに沿うように気流の流れの方向を変えられる個数が変化する。 In the present embodiment, the number of projections 15 is not particularly limited as long as the distance P is maintained. A vertical vortex is generated to increase the amount of airflow flowing near the curved surface portion 13b, and the number of the airflow direction changeable along the surface portion 5a of the wind deflector plate 5 changes.

以上のように、本発明にかかる天井埋め込み形空気調和機は、冷房運転の場合に、内部風路の上流からの気流が風向偏向板の前縁部で剥離することに起因する、風向偏向板の下面の結露を防止するもので、空気調和機、空気清浄機、乾燥機、カーエアコン等の用途に適用できる。 As described above, in the ceiling-embedded air conditioner according to the present invention, in the case of cooling operation, airflow from the upstream of the internal air passage separates at the front edge of the wind direction deflector. It prevents dew condensation on the bottom surface of the housing, and can be applied to applications such as air conditioners, air cleaners, dryers, and car air conditioners.

２ 筐体
３ 吹出口
４ 吸込口
５ 風向偏向板
６ 化粧パネル
１３ 内側風路
１３ａ 平面部
１３ｂ 曲面部
１４ 外側風路
１５ 突起
１５ａ 凹凸部 2 housing 3 air outlet 4 suction port 5 wind direction deflection plate 6 decoration panel 13 inner air passage 13a flat portion 13b curved surface portion 14 outer air passage 15 protrusion 15a uneven portion

Claims (2)

天井に埋設される筐体と、前記筐体の底面に設けられた化粧パネルと、前記化粧パネルに設けられ、前記筐体の内部に室内の空気を吸い込む吸込口と、前記吸込口から前記筐体の内部に吸い込んだ空気を室内へ吹き出す吹出口と、前記吹出口に設けられ、一端が回転軸により回動して風向制御する風向偏向板とを備えた天井埋め込み形空気調和機において、前記吹出口は内側風路と外側風路から構成されるとともに、前記内側風路は上流側の平面部と下流側の曲面部から構成され、
前記曲面部の端部に複数の突起を備え、
前記複数の突起の表面は、前記複数の突起よりさらに小さい複数の凹凸部を備えた
ことを特徴とする天井埋め込み形空気調和機。 a housing embedded in a ceiling; a decorative panel provided on the bottom surface of the housing; an air intake provided in the decorative panel for sucking indoor air into the interior of the housing; A ceiling-embedded air conditioner comprising an air outlet for blowing out air sucked into the body into a room, and a wind direction deflection plate provided at the air outlet, one end of which is rotated by a rotating shaft to control the air direction, The outlet is composed of an inner air passage and an outer air passage, and the inner air passage is composed of a flat portion on the upstream side and a curved surface portion on the downstream side,
A plurality of protrusions are provided at the end of the curved surface ,
The surfaces of the plurality of projections are provided with a plurality of irregularities smaller than the plurality of projections
A ceiling-embedded air conditioner characterized by: 前記複数の突起は、前記突起の法線方向からみた形状を、流れ方向が長軸となる略楕円としたことを特徴とする請求項１に記載の天井埋め込み形空気調和機。 2. The ceiling-embedded air conditioner according to claim 1 , wherein each of said plurality of projections has a substantially elliptical shape when viewed from the normal direction of said projections, the major axis of which is in the direction of flow.
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