JP6704190B2 - Turbo fan - Google Patents

Turbo fan Download PDF

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Publication number
JP6704190B2
JP6704190B2 JP2016001020A JP2016001020A JP6704190B2 JP 6704190 B2 JP6704190 B2 JP 6704190B2 JP 2016001020 A JP2016001020 A JP 2016001020A JP 2016001020 A JP2016001020 A JP 2016001020A JP 6704190 B2 JP6704190 B2 JP 6704190B2
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Prior art keywords
welding
blade member
blade
pin
main plate
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JP2017122394A (en
Inventor
陽一 内田
陽一 内田
清志 岡部
清志 岡部
土井　康之
康之 土井
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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 JP2016001020A priority Critical patent/JP6704190B2/en
Priority to CN201610752265.6A priority patent/CN106949076B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/088—Ceiling fans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/7805—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features
    • B29C65/7814—Positioning the parts to be joined, e.g. aligning, indexing or centring the parts to be joined comprising positioning features in the form of inter-cooperating positioning features, e.g. tenons and mortises
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/301—Three-dimensional joints, i.e. the joined area being substantially non-flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/543—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining more than two hollow-preforms to form said hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards

Description

本発明は、ターボファンに係り、特に、羽根部材を安定して支持することができ、溶着作業を容易に行うことを可能としたターボファンに関する。 The present invention relates to a turbofan, and more particularly to a turbofan that can stably support a blade member and that can perform a welding operation easily.

従来から、空気調和機の室内ユニットなどに搭載され、主板と、シュラウドと、複数の翼とから構成されたターボファンが知られている。
このようなターボファンとして、従来、例えば、中央部にモータの回転軸に固定されるボスを有する主板と、吸込み導風壁を形成するシュラウドと複数の羽根部材を熱可塑性樹脂で別々に成形し、主板は、複数の羽根部材との嵌合部を有し、シュラウドは複数の羽根部材との嵌合部を有し、複数の羽根部材を、主板とシュラウドの複数の嵌合部に回転軸に平行に嵌合させ超音波溶着にて一体化するようにした技術が開示されている（例えば、特許文献１を参照。）。 2. Description of the Related Art Conventionally, there has been known a turbofan mounted on an indoor unit of an air conditioner or the like and including a main plate, a shroud, and a plurality of blades.
Conventionally, as such a turbofan, for example, a main plate having a boss fixed to a rotation shaft of a motor in a central portion, a shroud forming a suction air guide wall, and a plurality of blade members are separately molded with a thermoplastic resin. The main plate has a fitting portion with a plurality of blade members, the shroud has a fitting portion with a plurality of blade members, and the plurality of blade members are attached to the plurality of fitting portions of the main plate and the shroud by a rotary shaft. There is disclosed a technique in which they are fitted in parallel with each other and integrated by ultrasonic welding (for example, refer to Patent Document 1).

特開２０１４−２０６０８４号公報JP, 2014-206084, A

しかしながら、前記特許文献１の技術においては、主板に形成された嵌合部に羽根部材を嵌合させた状態で、超音波溶着により一体化するようにしており、嵌合部の突出により羽根部材により乱流が発生するおそれがある。
嵌合部を形成しないようにすれば、乱流の問題は解決できるが、羽根部材を溶着する際に、羽根部材を固定する手段が必要となり、生産性が著しく低下してしまうという問題がある。
特に、近年のターボファンにおいては、乱流の発生を防止するとともに風量を確保するため、羽根部材が主板に対して傾斜する傾向があり、かつ、主板とシュラウドとの取り付け角度が異なるように羽根部材がねじれた形状に形成されることがある。そのため、羽根部材を固着する際に、羽根部材を支持することが極めて困難であるという問題を有している。 However, in the technique of Patent Document 1, the blade member is fitted into the fitting portion formed on the main plate and integrated by ultrasonic welding, and the blade member is formed by the protrusion of the fitting portion. May cause turbulence.
If the fitting portion is not formed, the problem of turbulent flow can be solved, but when welding the blade member, a means for fixing the blade member is required, and there is a problem that productivity is significantly reduced. ..
Particularly, in recent turbofans, in order to prevent turbulent flow and secure an air volume, the blade members tend to incline with respect to the main plate, and the blades are attached so that the mounting angle between the main plate and the shroud is different. The member may be formed in a twisted shape. Therefore, there is a problem that it is extremely difficult to support the blade member when fixing the blade member.

本発明は前記した点に鑑みてなされたものであり、羽根部材を安定して支持することができ、溶着作業を容易に行うことのできるターボファンを提供することを目的とする。 The present invention has been made in view of the above points, and an object of the present invention is to provide a turbofan that can stably support a blade member and can easily perform welding work.

前記目的を達成するため本発明は、主板と、シュラウドと、複数の羽根部材とを備えたターボファンにおいて、前記羽根部材は、フランジ部を備え、前記主板に、前記羽根部材および前記フランジ部を受け入れる受け入れ凹部を形成し、前記受け入れ凹部に溶着用リブを形成し、前記溶着用リブの溶融により前記羽根部材と前記主板とが接合され、前記受け入れ凹部の内側外周縁には、凹部が形成され、前記羽根部材は、溶着支持部を備え、前記溶着支持部に溶着用ピンを突設し、前記シュラウドに前記溶着支持部が係合される溶着用係合部を形成するとともに、前記溶着用ピンが挿通される溶着用孔を形成し、前記溶着用ピンの溶融により前記羽根部材と前記シュラウドとが接合されていることを特徴とする。 To achieve the above object, the present invention provides a turbofan including a main plate, a shroud, and a plurality of blade members, wherein the blade members include a flange portion, and the main plate includes the blade member and the flange portion. A receiving recess for receiving is formed, a welding rib is formed in the receiving recess, the blade member and the main plate are joined by melting of the welding rib, and a recess is formed on an inner peripheral edge of the receiving recess. The blade member includes a welding support portion, and a welding pin is provided on the welding support portion so as to project to form a welding engagement portion with which the welding support portion is engaged with the shroud. A welding hole through which the pin is inserted is formed, and the blade member and the shroud are joined by melting the welding pin .

また、前記構成において、前記主板に、羽根支持用リブを形成したことを特徴とする。 Further, in the above structure, blade supporting ribs are formed on the main plate.

また、前記構成において、前記羽根部材は、２つの羽根部材の周縁部を接触させて形成されており、前記羽根支持用リブは、前記羽根部材の接触部を被覆することを特徴とする。 Further, in the above configuration, the blade member is formed by contacting peripheral portions of two blade members, and the blade supporting rib covers the contact portion of the blade member.

また、前記構成において、前記溶着用リブは、前記受け入れ凹部の外周近傍に形成されていることを特徴とする。 Further, in the above-mentioned configuration, the welding rib is formed in the vicinity of the outer periphery of the receiving recess.

また、前記構成において、前記溶着用リブは、前記フランジ部の外周近傍に形成されていることを特徴とする。 Further, in the above-mentioned configuration, the welding rib is formed in the vicinity of the outer periphery of the flange portion.

また、前記構成において、前記溶着用ピンの溶融後の形状は、前記溶着用ピンと前記溶着用孔との境界部分の厚さ寸法が中央部より大きい形状であることを特徴とする。 Further, in the above configuration, the shape of the welding pin after melting is characterized in that the thickness dimension of the boundary portion between the welding pin and the welding hole is larger than the central portion.

また、前記構成において、前記溶着用係合部の前記溶着用孔の周囲には、溶着ガイド用座部が形成されていることを特徴とする。 Further, in the above configuration, a welding guide seat portion is formed around the welding hole of the welding engagement portion.

また、前記構成において、前記溶着用ピンの先端部中央には、凹部が形成されていることを特徴とする。 Further, in the above structure, a recess is formed at the center of the tip of the welding pin.

本発明によれば、羽根部材にフランジ部を形成するようにしているので、羽根部材が安定して支持することができ、溶着作業を容易に行うことが可能となる。 According to the present invention, since the blade member is formed with the flange portion, the blade member can be stably supported, and the welding work can be easily performed.

本発明のターボファンを適用した天井埋込型空気調和機の実施形態を示す縦断面図である。It is a longitudinal cross-sectional view showing an embodiment of a ceiling-embedded air conditioner to which the turbofan of the present invention is applied. 本実施形態の天井埋込型空気調和機の斜視図である。It is a perspective view of the ceiling embedded type air conditioner of this embodiment. ターボファンの底面図である。It is a bottom view of a turbo fan. ターボファンの斜視図である。It is a perspective view of a turbo fan. ターボファンの分解斜視図である。It is an exploded perspective view of a turbofan. 羽根部材と主板を示す斜視図である。It is a perspective view showing a blade member and a main plate. 羽根部材と主板を示す分解斜視図である。It is an exploded perspective view showing a blade member and a main plate. 羽根部材の底面側からみた斜視図である。It is the perspective view seen from the bottom face side of a blade member. 主板の受け入れ用溝部分を示す斜視図である。It is a perspective view showing a receiving groove portion of the main plate. 羽根部材と主板の接合部分を示す断面図である。It is sectional drawing which shows the joining part of a blade member and a main plate. シュラウドの溶着用係合部を示す斜視図である。It is a perspective view which shows the welding engagement part of a shroud. シュラウドの溶着用係合部に羽根部材の溶着支持部を装着した状態を示す斜視図である。It is a perspective view showing the state where the welding support part of the blade member was attached to the welding engagement part of the shroud. 溶着用ピンによりかしめた状態を示す断面図である。It is sectional drawing which shows the state crimped by the welding pin. シュラウドの溶着用係合部に羽根部材の溶着支持部を装着した状態の他の例を示す斜視図である。It is a perspective view which shows the other example of the state which attached the welding support part of a blade member to the welding engagement part of a shroud. 溶着用ピンによりかしめた状態の他の例を示す断面図である。It is sectional drawing which shows the other example of the state crimped by the welding pin. 溶着用ピンの溶着例を示す断面図である。It is sectional drawing which shows the example of welding of the welding pin.

以下、本発明に係るターボファンの実施形態について、図面を参照して説明する。
図１は、本発明に係るターボファンを適用した天井埋込型空気調和機の実施形態を示す縦断面図である。図２は、天井埋込型空気調和機の斜視図である。 Hereinafter, an embodiment of a turbo fan according to the present invention will be described with reference to the drawings.
FIG. 1 is a vertical cross-sectional view showing an embodiment of a ceiling-embedded air conditioner to which a turbofan according to the present invention is applied. FIG. 2 is a perspective view of the ceiling-embedded air conditioner.

本実施形態においては、図１に示すように、室内ユニット１０は、建屋の天井１１とこの天井１１の下方に設置された天井板１２との間の天井空間１３に設置されるものである。
この室内ユニット１０は、図１に示すように、下面が開放された箱型に形成された空気調和機本体１４を備えており、空気調和機本体１４の外側角部には、吊り用金具１８が取り付けられている。空気調和機本体１４は、吊り用金具１８に連結された吊りボルト１５で天井１１から吊り下げられた状態で設置される。この空気調和機本体１４の内側には、発泡スチロール製の断熱部材１６が、空気調和機本体１４の側板１７の内面に接した状態で配置され、側板１７における結露を防止している。 In the present embodiment, as shown in FIG. 1, the indoor unit 10 is installed in a ceiling space 13 between a ceiling 11 of a building and a ceiling plate 12 installed below the ceiling 11.
As shown in FIG. 1, the indoor unit 10 includes a box-shaped air conditioner body 14 having an open lower surface, and a hanging metal fitting 18 is provided at an outer corner of the air conditioner body 14. Is attached. The air conditioner body 14 is installed in a state of being suspended from the ceiling 11 by suspension bolts 15 connected to a suspension fitting 18. Inside the air conditioner body 14, a heat insulating member 16 made of styrofoam is arranged in contact with the inner surface of the side plate 17 of the air conditioner body 14 to prevent dew condensation on the side plate 17.

空気調和機本体１４の上板の下面には、ファンモータ２１が取り付けられており、このファンモータ２１には、ファンモータ２１の駆動により回転駆動される回転シャフト２２が下方に延在するように設けられている。この回転シャフト２２の下端部分には、ターボファン２３が取り付けられており、このファンモータ２１とターボファン２３とで送風装置２０を構成している。 A fan motor 21 is attached to the lower surface of the upper plate of the air conditioner body 14, and a rotation shaft 22 that is driven to rotate by the drive of the fan motor 21 extends downward in the fan motor 21. It is provided. A turbo fan 23 is attached to a lower end portion of the rotary shaft 22, and the fan motor 21 and the turbo fan 23 constitute a blower device 20.

ターボファン２３は、環状の板状に形成された主板２４を備えている。主板２４の中心部分には、下方に延出する逆円錐台形状のモータ収容部２５が形成されている。
モータ収容部２５には、ファンモータ２１が収容されており、ファンモータ２１の回転シャフト２２は、下方に延在しモータ収容部２５の底面に連結されている。そして、ファンモータ２１を回転駆動させることにより、回転シャフト２２を介してターボファン２３を回転動作させるように構成されている。 The turbo fan 23 includes a main plate 24 formed in an annular plate shape. An inverted truncated cone-shaped motor accommodating portion 25 extending downward is formed in a central portion of the main plate 24.
The fan housing 21 is housed in the motor housing portion 25, and the rotary shaft 22 of the fan motor 21 extends downward and is connected to the bottom surface of the motor housing portion 25. Then, by rotating the fan motor 21, the turbo fan 23 is rotated via the rotating shaft 22.

主板２４の下方には、シュラウド２６が設けられており、シュラウド２６は、周面が弧状に形成された環状に形成されている。主板２４とシュラウド２６の内周面との間には、周方向に所定間隔をもって配置される複数の羽根部材２７が一体に形成されている。
シュラウド２６の下方には、オリフィス２８が配置されており、オリフィス２８は、周面が弧状に形成された環状に形成されている。 A shroud 26 is provided below the main plate 24, and the shroud 26 is formed in an annular shape whose peripheral surface is formed in an arc shape. A plurality of blade members 27 are integrally formed between the main plate 24 and the inner peripheral surface of the shroud 26 at predetermined intervals in the circumferential direction.
An orifice 28 is arranged below the shroud 26, and the orifice 28 is formed in an annular shape whose peripheral surface is formed in an arc shape.

この送風装置２０と断熱部材１６との間には、送風装置２０の側方を取り囲むように、平面視でほぼ四角形状に曲折形成された熱交換器３０が配置されている。
熱交換器３０は、冷房運転時には、冷媒の蒸発器として機能し、暖房運転時、冷媒の凝縮器として機能する熱交換器３０である。熱交換器３０は、空気調和機本体１４の内部に吸い込まれる室内の空気と冷媒との熱交換を行って、冷房運転時には、空調室内の空気を冷却し、暖房運転時には、室内の空気を加熱することができるように構成されている。 Between the blower 20 and the heat insulating member 16, a heat exchanger 30 that is bent and formed into a substantially rectangular shape in a plan view is disposed so as to surround the side of the blower 20.
The heat exchanger 30 is a heat exchanger 30 that functions as a refrigerant evaporator during cooling operation and as a refrigerant condenser during heating operation. The heat exchanger 30 exchanges heat between the indoor air sucked into the air conditioner body 14 and the refrigerant, cools the air in the air-conditioned room during the cooling operation, and heats the indoor air during the heating operation. Is configured to be able to.

また、熱交換器３０の下側には、熱交換器３０の下面に対応するようにドレンパン３１が配置されている。このドレンパン３１は、熱交換器３０で発生するドレン水を受けるためのものである。また、ドレンパン３１の中央部分には、送風装置２０の吸い込み口３２が形成されている。 A drain pan 31 is arranged below the heat exchanger 30 so as to correspond to the lower surface of the heat exchanger 30. The drain pan 31 is for receiving drain water generated in the heat exchanger 30. A suction port 32 of the blower device 20 is formed in the center of the drain pan 31.

また、空気調和機本体１４の下面には、図１および図２に示すように、空気調和機本体１４の下側開口を覆うように、ほぼ四角形状の化粧パネル３３が取り付けられている。
化粧パネル３３の中央部分には、ドレンパン３１の吸い込み口３２に連通する吸い込み口３４が形成されており、化粧パネル３３の吸い込み口３４部分には、吸い込み口３４を覆う吸い込みグリル３５が着脱可能に取り付けられている。吸い込みグリル３５の空気調和機本体１４側には、空気中の塵などを除去するためのフィルタ３６が設けられている。 As shown in FIGS. 1 and 2, a substantially rectangular decorative panel 33 is attached to the lower surface of the air conditioner body 14 so as to cover the lower opening of the air conditioner body 14.
A suction port 34 that communicates with the suction port 32 of the drain pan 31 is formed in the center portion of the decorative panel 33, and a suction grill 35 that covers the suction port 34 is detachably attached to the suction port 34 portion of the decorative panel 33. It is installed. A filter 36 for removing dust and the like in the air is provided on the air conditioner body 14 side of the suction grill 35.

化粧パネル３３の吸い込み口３４の外側であって化粧パネル３３の各辺に沿った位置には、空調後の空気を室内に送る吹出口３７がそれぞれ形成されている。各吹出口３７には、風向を変更するフラップ３８がそれぞれ設けられている。そして、ファンモータ２１により回転シャフト２２を回転駆動させてターボファン２３を回転させることにより、室内の空気は、吸い込み口３２，３４から吸い込まれ、フィルタ３６を通過した後に熱交換器３０を通過して熱交換され、吹出口３７から空調後の空気が室内に送られるように構成されている。 Outside the suction port 34 of the decorative panel 33 and along each side of the decorative panel 33, air outlets 37 for sending the air-conditioned air into the room are formed. Each of the outlets 37 is provided with a flap 38 that changes the wind direction. Then, by rotating the rotary shaft 22 by the fan motor 21 and rotating the turbo fan 23, the air in the room is sucked from the suction ports 32 and 34, passes through the filter 36, and then passes through the heat exchanger 30. The heat-exchanged air is exchanged, and the air after air conditioning is sent from the air outlet 37 into the room.

次に、ターボファンについてさらに詳細に説明する。
図３は、ターボファンの底面図である。図４はターボファンの斜視図である。図５は、ターボファンの分解斜視図である。図６は、羽根部材と主板を示す斜視図である。図７は、羽根部材と主板を示す分解斜視図である。図８は、羽根部材の底面側からみた斜視図である。図９は、主板の受け入れ用溝部分を示す斜視図である。図１０は、羽根部材と主板の接合部分を示す断面図である。図１１は、シュラウドの溶着用係合部を示す斜視図である。図１２は、シュラウドの溶着用係合部に羽根部材の溶着支持部を装着した状態を示す斜視図である。図１３は、溶着用ピンによりかしめた状態を示す断面図である。図１４は、シュラウドの溶着用係合部に羽根部材の溶着支持部を装着した状態の他の例を示す斜視図である。図１５は、溶着用ピンによりかしめた状態の他の例を示す断面図である。図１６は、溶着用ピンの溶着例を示す断面図である。 Next, the turbo fan will be described in more detail.
FIG. 3 is a bottom view of the turbofan. FIG. 4 is a perspective view of the turbofan. FIG. 5 is an exploded perspective view of the turbofan. FIG. 6 is a perspective view showing the blade member and the main plate. FIG. 7 is an exploded perspective view showing the blade member and the main plate. FIG. 8 is a perspective view of the blade member as seen from the bottom side. FIG. 9 is a perspective view showing a receiving groove portion of the main plate. FIG. 10 is a cross-sectional view showing a joint portion between the blade member and the main plate. FIG. 11 is a perspective view showing a welding engagement portion of the shroud. FIG. 12 is a perspective view showing a state in which the welding support portion of the blade member is attached to the welding engagement portion of the shroud. FIG. 13: is sectional drawing which shows the state crimped by the welding pin. FIG. 14 is a perspective view showing another example of a state in which the welding support portion of the blade member is attached to the welding engagement portion of the shroud. FIG. 15: is sectional drawing which shows the other example of the state crimped by the welding pin. FIG. 16 is a cross-sectional view showing a welding example of the welding pin.

前述のように、ターボファン２３は、主板２４と、シュラウド２６と、複数の羽根部材２７とから形成されており、これらをそれぞれ別個に製造した後、組立を行い、ターボファン２３を形成するようになっている。
本実施形態においては、図５に示すように、羽根部材２７は、正圧側に位置する正圧側羽根部材４０と、負圧側に位置する負圧側羽根部材４１とを備えている。
正圧側羽根部材４０は、正圧側の面を構成する羽根本体４２と、底板４３とを備えており、図８に示すように、底板４３には、取り付け用孔４４が形成されている。正圧側羽根部材４０の下端部には、底板４３の形成側と反対側に延在するフランジ部４５が形成されている。正圧側羽根部材４０の上部には、異なる高さに形成された段状の溶着支持部４６が形成されている。溶着支持部４６の各段の上面は、平坦面とされており、これら各溶着支持部４６には、図６に示すように、溶着用ピン４７が突設されている。 As described above, the turbo fan 23 is formed of the main plate 24, the shroud 26, and the plurality of blade members 27. These are manufactured separately and then assembled to form the turbo fan 23. It has become.
In the present embodiment, as shown in FIG. 5, the blade member 27 includes a positive pressure side blade member 40 located on the positive pressure side and a negative pressure side blade member 41 located on the negative pressure side.
The positive pressure side blade member 40 includes a blade main body 42 that constitutes a surface on the positive pressure side and a bottom plate 43. As shown in FIG. 8, the bottom plate 43 has an attachment hole 44 formed therein. At the lower end of the positive pressure side blade member 40, a flange portion 45 extending to the side opposite to the side where the bottom plate 43 is formed is formed. On the upper side of the positive pressure side blade member 40, step-like welding support portions 46 formed at different heights are formed. The upper surface of each step of the welding support portion 46 is a flat surface, and a welding pin 47 is projectingly provided on each welding support portion 46 as shown in FIG.

また、負圧側羽根部材４１は、負圧側の面を構成する羽根本体４８を備えている。正圧側羽根部材４０の羽根本体４２の内面には、係合ピン４９が形成され、負圧側羽根部材４１の羽根本体４８の内面には、係合ピン４９が係合される係合凹部（図示せず）が形成されている。正圧側羽根部材４０の底板４３には、係合スリット５０が形成されており、負圧側羽根部材４１の下端部には係合スリット５０に係合する係合突起（図示せず）が形成されている。
そして、係合突起を係合スリット５０に係合させるとともに、係合ピン４９を係合凹部に係合させることにより、正圧側羽根部材４０の周縁部と負圧側羽根部材４１の周縁部とを接触させて羽根部材２７を構成するようになっている。
なお、本実施形態においては、正圧側羽根部材４０に底板４３およびフランジ部４５を形成する構成としたが、負圧側羽根部材４１に底板４３およびフランジ部４５を形成する構成としてもよい。 Further, the negative pressure side blade member 41 includes a blade main body 48 that constitutes a negative pressure side surface. An engagement pin 49 is formed on the inner surface of the blade main body 42 of the positive pressure side blade member 40, and an engagement recess 49 with which the engagement pin 49 is engaged is formed on the inner surface of the blade main body 48 of the negative pressure side blade member 41. (Not shown) is formed. An engagement slit 50 is formed on the bottom plate 43 of the positive pressure side blade member 40, and an engagement protrusion (not shown) that engages with the engagement slit 50 is formed on the lower end portion of the negative pressure side blade member 41. ing.
Then, the engaging projection is engaged with the engaging slit 50, and the engaging pin 49 is engaged with the engaging recess, so that the peripheral edge portion of the positive pressure side blade member 40 and the peripheral edge portion of the negative pressure side blade member 41 are separated from each other. The blade member 27 is configured to come into contact with each other.
Although the bottom plate 43 and the flange portion 45 are formed on the positive pressure side blade member 40 in the present embodiment, the bottom plate 43 and the flange portion 45 may be formed on the negative pressure side blade member 41.

また、図９および図１０に示すように、主板２４には、羽根部材２７の底板４３およびフランジ部４５を受け入れるための受け入れ凹部６０が形成されている。受け入れ凹部６０の深さ寸法は、フランジ部４５の厚さ寸法とほぼ同様に形成されており、受け入れ凹部６０にフランジ部４５を溶着した状態で、主板２４の面とフランジ部４５の面とが面一となるように構成されている。
受け入れ凹部６０の一側には、羽根部材２７の固定作業を行う際に、羽根部材２７を支持するための羽根支持用リブ６１が立設されている。羽根支持用リブ６１は、負圧側羽根部材４１の下端部を被覆するように構成されている。前述のように、羽根部材２７は、正圧側羽根部材４０と負圧側羽根部材４１とで構成されており、正圧側羽根部材４０の底板４３と負圧側羽根部材４１の下端部との境界部が形成される。そのため、羽根支持用リブ６１で羽根部材２７の境界部を被覆することで、正圧側羽根部材４０と負圧側羽根部材４１とが外れてしまうことを防止するようにしている。 Further, as shown in FIGS. 9 and 10, the main plate 24 is formed with a receiving recess 60 for receiving the bottom plate 43 and the flange portion 45 of the blade member 27. The depth dimension of the receiving recess 60 is formed to be substantially the same as the thickness dimension of the flange portion 45. With the flange portion 45 welded to the receiving recess 60, the surface of the main plate 24 and the surface of the flange portion 45 are It is configured to be flush.
A blade supporting rib 61 for supporting the blade member 27 when the blade member 27 is fixed is provided on one side of the receiving recess 60. The blade supporting rib 61 is configured to cover the lower end of the negative pressure side blade member 41. As described above, the blade member 27 is composed of the positive pressure side blade member 40 and the negative pressure side blade member 41, and the boundary portion between the bottom plate 43 of the positive pressure side blade member 40 and the lower end of the negative pressure side blade member 41 is formed. It is formed. Therefore, by covering the boundary portion of the blade member 27 with the blade supporting rib 61, it is possible to prevent the positive pressure side blade member 40 and the negative pressure side blade member 41 from coming off.

また、受け入れ凹部６０には、取り付け用孔４４に係合される取り付け用ピン６２が突設されている。
さらに、受け入れ凹部６０の底面の外周近傍には、溶着用リブ６３が形成されている。このように溶着用リブ６３を受け入れ凹部６０の底面の外周近傍に形成することにより、羽根部材２７の底板４３とフランジ部４５とを受け入れ凹部６０に設置した際に、底板４３とフランジ部４５の外周付近を溶着用リブ６３で支持することができるので、羽根部材２７を安定して支持することが可能となる。
また、溶着用リブ６３は、ほぼ環状に形成されているが、一部には形成されていない。前述のように羽根部材２７は、底面に形成された係合スリット５０と係合突起とを係合させるものであるため、溶着用リブ６３を溶融した際に、係合部分に樹脂が入り込まないようにするためである。
なお、本実施形態においては、溶着用リブ６３を受け入れ凹部６０に形成するようにしているが、これに限定されない。例えば、溶着用リブ６３をフランジ部４５の底面の外周近傍に形成するようにしてもよい。 Further, the receiving recess 60 is provided with a mounting pin 62 that is engaged with the mounting hole 44.
Further, a welding rib 63 is formed near the outer periphery of the bottom surface of the receiving recess 60. By forming the welding rib 63 near the outer periphery of the bottom surface of the receiving recess 60 in this manner, when the bottom plate 43 and the flange portion 45 of the blade member 27 are installed in the receiving recess 60, the bottom plate 43 and the flange portion 45 of the receiving member 60 are installed. Since the welding ribs 63 can support the vicinity of the outer periphery, the blade member 27 can be stably supported.
The welding rib 63 is formed in a substantially annular shape, but is not formed in a part thereof. As described above, since the blade member 27 engages the engagement slit 50 formed on the bottom surface with the engagement protrusion, the resin does not enter the engagement portion when the welding rib 63 is melted. To do so.
In addition, in this embodiment, the welding rib 63 is formed in the receiving recess 60, but the present invention is not limited to this. For example, the welding rib 63 may be formed near the outer periphery of the bottom surface of the flange portion 45.

さらに、図１０に示すように、受け入れ凹部６０の内側外周縁には、凹部６４が形成されている。そして、受け入れ凹部６０の内側に羽根部材２７を設置した場合に、羽根部材２７の下面周囲の角部が凹部６４に位置するようになっている。これは、溶着用リブ６３を溶融した場合に生じるバリを凹部６４に流すことで、バリを外部に露出させないようにするためである。
そして、受け入れ凹部６０の内側に、取り付け用ピン６２を羽根部材２７の取り付け用孔４４に係合させ、羽根部材２７を設置した状態で、受け入れ凹部６０の裏側から超音波などを用いた溶着を行うことで、溶着用リブ６３を溶融して、主板２４に対して羽根部材２７を固着する。
このとき、羽根部材２７にフランジ部４５を形成するとともに、受け入れ凹部６０に羽根支持用リブ６１を形成するようにしているので、羽根部材２７が安定した状態で、溶着作業を行うことが可能となる。 Further, as shown in FIG. 10, a recess 64 is formed on the inner peripheral edge of the receiving recess 60. When the blade member 27 is installed inside the receiving recess 60, the corners around the lower surface of the blade member 27 are located in the recess 64. This is to prevent burrs from being exposed to the outside by causing burrs generated when the welding ribs 63 are melted to flow into the recesses 64.
Then, inside the receiving recess 60, the mounting pin 62 is engaged with the mounting hole 44 of the blade member 27, and with the blade member 27 installed, welding using ultrasonic waves or the like is performed from the back side of the receiving recess 60. By performing this, the welding rib 63 is melted and the blade member 27 is fixed to the main plate 24.
At this time, since the blade portion 27 is formed with the flange portion 45 and the receiving recess 60 is formed with the blade supporting rib 61, the welding work can be performed in a stable state of the blade member 27. Become.

なお、本実施形態においては、主板２４に受け入れ凹部６０を形成し、この受け入れ凹部６０にフランジ部４５を設置するようにしているが、これに限定されない。
例えば、羽根支持用リブ６１をフランジ部４５の外周に沿って形成し、この羽根支持用リブ６１により、羽根部材２７を支持した状態で、溶着するようにしてもよい。
また、羽根支持用リブ６１を形成せず、フランジ部４５のみにより、羽根部材２７を支持した状態で、溶着するようにしてもよい。 In this embodiment, the receiving recess 60 is formed in the main plate 24, and the flange 45 is installed in the receiving recess 60, but the present invention is not limited to this.
For example, the blade supporting rib 61 may be formed along the outer periphery of the flange portion 45, and the blade supporting rib 61 may be welded while the blade member 27 is supported.
Alternatively, the blade supporting rib 61 may not be formed, and the blade member 27 may be welded while being supported only by the flange portion 45.

図１１に示すように、シュラウド２６の内側面には、羽根部材２７の溶着支持部４６が係合される溶着用係合部７０がシュラウド２６の外側に膨出するように形成されている。溶着用係合部７０の内面形状は、溶着支持部４６の外面形状とほぼ同様に形成されており、羽根部材２７の溶着支持部４６を溶着用係合部７０に係合させた状態で、羽根部材２７とシュラウド２６とを安定して支持することができるように構成されている。
また、溶着用係合部７０には、溶着用ピン４７が挿通される溶着用孔７１が形成されている。溶着用孔７１の周囲には、円形状の溶着ガイド用座部７２が形成されている。
そして、超音波溶着により、溶着用ピン４７を溶融させることで、羽根部材２７とシュラウド２６とをかしめ固定するように構成されている。 As shown in FIG. 11, a welding engagement portion 70 with which the welding support portion 46 of the blade member 27 is engaged is formed on the inner surface of the shroud 26 so as to bulge outside the shroud 26. The inner surface shape of the welding engagement portion 70 is formed to be substantially similar to the outer surface shape of the welding support portion 46, and in a state where the welding support portion 46 of the blade member 27 is engaged with the welding engagement portion 70, The blade member 27 and the shroud 26 can be stably supported.
In addition, a welding hole 71 through which the welding pin 47 is inserted is formed in the welding engagement portion 70. A circular welding guide seat 72 is formed around the welding hole 71.
Then, the blade pin 27 and the shroud 26 are caulked and fixed by melting the welding pin 47 by ultrasonic welding.

一般に、超音波溶着を行う場合は、ホーンを溶着箇所に所定の圧力で押圧させた状態で、超音波振動を加えることで、溶着箇所を溶融させるものである。この場合に、ホーンの溶着箇所への接触面形状により、溶着箇所の溶融後の形状を規定することが可能である。
例えば、ホーンの接触面形状が球面状の場合、図１３に示すように、溶着用ピン４７の溶融後の形状は、球面状となる。この場合に、ホーンの接触面形状に応じて溶着用ピン４７の先端形状を変更することが好ましい。例えば、ホーンの接触面形状が球面状の場合は、溶着用ピン４７の先端部を中央が突出したテーパ形状に形成する。 Generally, in the case of performing ultrasonic welding, ultrasonic welding is applied while the horn is pressed against the welded portion with a predetermined pressure to melt the welded portion. In this case, it is possible to define the shape of the welded portion after melting by the shape of the contact surface of the horn to the welded portion.
For example, when the contact surface shape of the horn is spherical, the shape of the welding pin 47 after melting is spherical, as shown in FIG. In this case, it is preferable to change the tip shape of the welding pin 47 according to the shape of the contact surface of the horn. For example, when the contact surface shape of the horn is spherical, the tip of the welding pin 47 is formed in a tapered shape with the center protruding.

また、例えば、図１６に示すように、ホーン８０の中心部分にガイドピン８１を設けるようにした場合には、図１５に示すように、溶着用ピン４７の溶融後の形状は、中央が窪んだ断面形状半円形状となる。この場合には、図１４に示すように、溶着用ピン４７の先端部中央に、ガイドピン８１を挿入するための凹部７３を形成する。そして、ホーン８０のガイドピン８１を凹部７３に挿入して溶着を行うことにより、ホーン８０を溶着用ピン４７の中心に位置させることができ、溶着用ピン４７に対するホーン８０の位置決めを確実に行うことができる。
このように、溶着用ピン４７の溶融後の形状を断面形状半円形状に形成すると、溶着用ピン４７と溶着用孔７１との境界部分の厚さ寸法が中央部より厚くなるので、剪断強度や引っ張り強度を向上させることが可能となる。
このとき、溶着ガイド用座部７２を形成しているので、ホーン８０の位置決めを確実に行うことができ、安定した溶着を行うことが可能となる。
なお、本実施形態においては、溶着手段として、超音波溶着を用いた場合について説明しているが、その他、インパルス溶着（ヒータ溶着）や赤外線ヒータ溶着などの溶着手段でも、同様の効果を得ることができる。 Further, for example, when the guide pin 81 is provided in the central portion of the horn 80 as shown in FIG. 16, the shape of the welding pin 47 after melting is hollow at the center as shown in FIG. The cross section is semicircular. In this case, as shown in FIG. 14, a recess 73 for inserting the guide pin 81 is formed at the center of the tip of the welding pin 47. Then, by inserting the guide pin 81 of the horn 80 into the recess 73 and performing welding, the horn 80 can be positioned at the center of the welding pin 47, and the positioning of the horn 80 with respect to the welding pin 47 is reliably performed. be able to.
In this way, when the shape of the welding pin 47 after melting is formed into a semicircular cross-sectional shape, the thickness dimension of the boundary portion between the welding pin 47 and the welding hole 71 becomes thicker than the central portion, so that the shear strength is increased. It is possible to improve the tensile strength.
At this time, since the welding guide seat 72 is formed, the horn 80 can be reliably positioned, and stable welding can be performed.
In the present embodiment, the case where ultrasonic welding is used as the welding means has been described. However, the same effect can be obtained by other welding means such as impulse welding (heater welding) and infrared heater welding. You can

次に、本実施形態におけるターボファン２３の組立手順について説明する。
まず、負圧側羽根部材４１の係合突起を正圧側羽根部材４０の係合スリット５０に係合させるとともに、係合ピン４９を係合凹部に係合させることにより、正圧側羽根部材４０の周縁部と負圧側羽根部材４１の周縁部とを接触させて羽根部材２７を形成する。
続いて、受け入れ凹部６０の内側に、取り付け用ピン６２を羽根部材２７の取り付け用孔４４に係合させ、羽根部材２７を設置した状態で、受け入れ凹部６０の裏側から超音波溶着を行うことで、溶着用リブ６３を溶融して、主板２４に対して羽根部材２７を固着する。
このとき、羽根部材２７にフランジ部４５を形成するとともに、受け入れ凹部６０に羽根支持用リブ６１を形成するようにしているので、羽根部材２７が安定した状態で、溶着作業を行うことが可能となる。さらに、受け入れ凹部６０の内側外周縁に凹部６４を形成するようにしているので、溶着用リブ６３を溶融した場合に生じるバリを凹部６４に流すことができ、バリが外部に露出してしまうことを防止することができる。
このように主板２４に羽根部材２７を固着した状態で、主板２４の面とフランジ部４５の面とがほぼ面一に形成され、これにより、羽根部材２７の正圧側における空気の乱流の発生を防止することができる。 Next, a procedure for assembling the turbo fan 23 in this embodiment will be described.
First, the engaging protrusion of the negative pressure side blade member 41 is engaged with the engaging slit 50 of the positive pressure side blade member 40, and the engaging pin 49 is engaged with the engaging recess, so that the peripheral edge of the positive pressure side blade member 40 is engaged. And the peripheral portion of the negative pressure side blade member 41 are brought into contact with each other to form the blade member 27.
Subsequently, the mounting pin 62 is engaged with the mounting hole 44 of the blade member 27 inside the receiving recess 60, and ultrasonic welding is performed from the back side of the receiving recess 60 with the blade member 27 installed. , The welding rib 63 is melted, and the blade member 27 is fixed to the main plate 24.
At this time, since the blade portion 27 is formed with the flange portion 45 and the receiving recess 60 is formed with the blade supporting rib 61, the welding work can be performed in a stable state of the blade member 27. Become. Further, since the concave portion 64 is formed on the inner peripheral edge of the receiving concave portion 60, burrs generated when the welding rib 63 is melted can flow into the concave portion 64 and the burrs are exposed to the outside. Can be prevented.
In this manner, with the blade member 27 fixed to the main plate 24, the surface of the main plate 24 and the surface of the flange portion 45 are formed substantially flush with each other, whereby turbulent air flow occurs on the positive pressure side of the blade member 27. Can be prevented.

次に、シュラウド２６の溶着用係合部７０に、羽根部材２７の溶着支持部４６を係合させるとともに、シュラウド２６の溶着用孔７１から羽根部材２７の溶着用ピン４７を突出させる。
この状態で、ホーン８０を溶着用ピン４７に押し当てて超音波振動を付与することで、溶着用ピン４７を溶融させ、羽根部材２７とシュラウド２６とをかしめ固定する。
このとき、羽根部材２７の溶着支持部４６を溶着用係合部７０に係合させた状態で、羽根部材２７とシュラウド２６とを安定して支持することができ、溶着作業を容易に行うことが可能となる。 Next, the welding support portion 46 of the blade member 27 is engaged with the welding engagement portion 70 of the shroud 26, and the welding pin 47 of the blade member 27 is projected from the welding hole 71 of the shroud 26.
In this state, the welding pin 47 is melted by pressing the horn 80 against the welding pin 47 to apply ultrasonic vibration, and the blade member 27 and the shroud 26 are caulked and fixed.
At this time, the blade member 27 and the shroud 26 can be stably supported in a state where the welding support portion 46 of the blade member 27 is engaged with the welding engagement portion 70, and the welding operation can be easily performed. Is possible.

以上述べたように、本実施形態においては、羽根部材２７は、フランジ部４５を備え、フランジ部４５を主板２４に溶着させて羽根部材２７と主板２４とが接合されている。
これによれば、羽根部材２７にフランジ部４５を形成するようにしているので、羽根部材２７を安定して支持することができ、溶着作業を容易に行うことが可能となる。 As described above, in the present embodiment, the blade member 27 includes the flange portion 45, and the blade member 27 and the main plate 24 are joined by welding the flange portion 45 to the main plate 24.
According to this, since the flange portion 45 is formed on the blade member 27, the blade member 27 can be stably supported, and the welding work can be easily performed.

また、本実施形態においては、主板２４に、羽根部材２７およびフランジ部４５を受け入れる受け入れ凹部６０を形成し、受け入れ凹部６０に溶着用リブ６３を形成し、溶着用リブ６３の溶融により羽根部材２７と主板２４とが接合されている。
これによれば、羽根部材２７およびフランジ部４５を受け入れる受け入れ凹部６０を形成するようにしているので、羽根部材２７を安定して支持することができ、溶着作業を容易に行うことが可能となる。 Further, in the present embodiment, the main plate 24 is formed with the receiving recess 60 for receiving the blade member 27 and the flange portion 45, the welding rib 63 is formed in the receiving recess 60, and the blade 63 is melted to melt the blade member 27. And the main plate 24 are joined.
According to this, since the receiving recess 60 that receives the blade member 27 and the flange portion 45 is formed, the blade member 27 can be stably supported, and the welding work can be easily performed. ..

また、本実施形態においては、主板２４に、羽根支持用リブ６１を形成した。
これによれば、羽根支持用リブ６１により、羽根部材２７を安定して支持することができ、溶着作業を容易に行うことが可能となる。 Further, in this embodiment, the blade supporting ribs 61 are formed on the main plate 24.
According to this, the blade member 27 can be stably supported by the blade supporting rib 61, and the welding work can be easily performed.

また、本実施形態においては、羽根部材２７は、２つの正圧側羽根部材４０（羽根部材）の周縁部と負圧側羽根部材４１（羽根部材）の周縁部とを接触させて形成されており、羽根支持用リブ６１は、羽根部材２７の境界部を被覆する。
これによれば、羽根支持用リブ６１により、正圧側羽根部材４０と負圧側羽根部材４１との境界部を被覆するようにしているので、正圧側羽根部材４０および負圧側羽根部材４１が外れてしまうことを防止することができる。 Further, in the present embodiment, the blade member 27 is formed by contacting the peripheral portions of the two pressure side blade members 40 (blade members) with the peripheral portions of the negative pressure side blade member 41 (blade members). The blade supporting rib 61 covers the boundary portion of the blade member 27.
According to this, the blade supporting rib 61 covers the boundary portion between the positive pressure side blade member 40 and the negative pressure side blade member 41, so that the positive pressure side blade member 40 and the negative pressure side blade member 41 come off. It can be prevented.

また、本実施形態においては、溶着用リブ６３は、受け入れ凹部６０の外周近傍に形成されている。
これによれば、溶着用リブ６３を受け入れ凹部６０の外周近傍に形成することにより、羽根部材２７の底板４３とフランジ部４５とを受け入れ凹部６０に設置した際に、底板４３とフランジ部４５の外周付近を溶着用リブ６３で支持することができるので、羽根部材２７を安定して支持することが可能となる。 Further, in the present embodiment, the welding rib 63 is formed near the outer periphery of the receiving recess 60.
According to this, by forming the welding rib 63 in the vicinity of the outer periphery of the receiving recess 60, when the bottom plate 43 and the flange portion 45 of the blade member 27 are installed in the receiving recess 60, the bottom plate 43 and the flange portion 45 of the blade member 27 are installed. Since the welding ribs 63 can support the vicinity of the outer periphery, the blade member 27 can be stably supported.

また、本実施形態においては、受け入れ凹部６０の内側外周縁には、凹部６４が形成されている。
これによれば、受け入れ凹部６０の内側外周縁に凹部６４を形成するようにしているので、溶着用リブ６３を溶融した場合に生じるバリを凹部６４に流すことができ、バリが外部に露出してしまうことを防止することができる。 Further, in the present embodiment, a recess 64 is formed on the inner peripheral edge of the receiving recess 60.
According to this, since the concave portion 64 is formed on the inner peripheral edge of the receiving concave portion 60, the burr generated when the welding rib 63 is melted can be flown into the concave portion 64, and the burr is exposed to the outside. It is possible to prevent that.

また、本実施形態においては、羽根部材２７は、溶着支持部４６を備え、溶着支持部４６に溶着用ピン４７を突設し、シュラウド２６に溶着支持部４６が係合される溶着用係合部７０を形成するとともに、溶着用ピン４７が挿通される溶着用孔７１を形成し、溶着用ピン４７の溶融により羽根部材２７とシュラウド２６とが接合されている。
これによれば、羽根部材２７の溶着支持部４６を溶着用係合部７０に係合させた状態で、羽根部材２７とシュラウド２６とを安定して支持することができ、溶着作業を容易に行うことが可能となる。
なお、本実施形態においては、主板２４と羽根部材２７とを一体成型した場合にも適用することが可能である。 Further, in the present embodiment, the blade member 27 is provided with the welding support portion 46, the welding pin 47 is projectingly provided on the welding support portion 46, and the welding support portion 46 is engaged with the shroud 26. The portion 70 is formed, a welding hole 71 through which the welding pin 47 is inserted is formed, and the vane member 27 and the shroud 26 are joined by melting the welding pin 47.
According to this, the blade member 27 and the shroud 26 can be stably supported in a state where the welding support portion 46 of the blade member 27 is engaged with the welding engagement portion 70, and the welding work is facilitated. It becomes possible to do it.
It should be noted that the present embodiment can also be applied to the case where the main plate 24 and the blade member 27 are integrally molded.

また、本実施形態においては、溶着用ピン４７の溶融後の形状は、溶着用ピン４７と溶着用孔７１との境界部分の厚さ寸法が大きい形状である。
これによれば、溶着用ピン４７と溶着用孔７１との境界部分の厚さ寸法が厚くなるので、剪断強度や引っ張り強度を向上させることが可能となる。 Further, in the present embodiment, the shape of the welding pin 47 after melting is a shape in which the thickness dimension of the boundary portion between the welding pin 47 and the welding hole 71 is large.
According to this, the thickness dimension of the boundary portion between the welding pin 47 and the welding hole 71 becomes thicker, so that it becomes possible to improve the shear strength and the tensile strength.

また、本実施形態においては、溶着用係合部７０の溶着用孔７１の周囲には、溶着ガイド用座部７２が形成されている。
これによれば、溶着ガイド用座部７２を形成しているので、ホーン８０の位置決めを確実に行うことができ、安定した溶着を行うことが可能となる。 Further, in the present embodiment, a welding guide seat 72 is formed around the welding hole 71 of the welding engagement portion 70.
According to this, since the welding guide seat 72 is formed, the positioning of the horn 80 can be reliably performed, and stable welding can be performed.

また、本実施形態においては、溶着用ピン４７の先端部中央には、凹部７３が形成されている。
これによれば、ホーン８０のガイドピン８１を凹部７３に挿入して溶着を行うことにより、ホーン８０を溶着用ピン４７の中心に位置させることができ、溶着用ピン４７に対するホーン８０の位置決めを確実に行うことができる。 Further, in the present embodiment, a recess 73 is formed at the center of the tip of the welding pin 47.
According to this, by inserting the guide pin 81 of the horn 80 into the recess 73 and performing welding, the horn 80 can be positioned at the center of the welding pin 47, and the positioning of the horn 80 with respect to the welding pin 47 can be performed. It can be done reliably.

なお、本発明の実施形態について図面に基づいて説明したが、本発明は、前記実施形態に限られるものではなく、発明の要旨を逸脱しない範囲で変更可能である。 Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the above-described embodiments and can be modified without departing from the gist of the invention.

１０ 室内ユニット
１４ 空気調和機本体
２４ 主板
２３ ターボファン
２６ シュラウド
２７ 羽根部材
４０ 正圧側羽根部材
４１ 負圧側羽根部材
４２、４８ 羽根本体
４３ 底板
４４ 取り付け用孔
４５ フランジ部
４６ 溶着支持部
４７ 溶着用ピン
４９ 係合ピン
５０ 係合スリット
６０ 受け入れ凹部
６１ 羽根支持用リブ
６２ 取り付け用ピン
６３ 溶着用リブ
６４ 凹部
７０ 溶着用係合部
７１ 溶着用孔
７２ 溶着ガイド用座部
７３ 凹部
８０ ホーン
８１ ガイドピン 10 Indoor Unit 14 Air Conditioner Main Body 24 Main Plate 23 Turbo Fan 26 Shroud 27 Blade Member 40 Positive Pressure Side Blade Member 41 Negative Pressure Side Blade Member 42, 48 Blade Main Body 43 Bottom Plate 44 Mounting Hole 45 Flange Part 46 Welding Support Part 47 Welding Pin 49 Engagement pin 50 Engagement slit 60 Receiving recessed portion 61 Blade supporting rib 62 Mounting pin 63 Welding rib 64 Recessed portion 70 Welding engagement portion 71 Welding hole 72 Welding guide seat portion 73 Recessed portion 80 Horn 81 Guide pin

Claims (8)

主板と、シュラウドと、複数の羽根部材とを備えたターボファンにおいて、
前記羽根部材は、フランジ部を備え、
前記主板に、前記羽根部材および前記フランジ部を受け入れる受け入れ凹部を形成し、前記受け入れ凹部に溶着用リブを形成し、前記溶着用リブの溶融により前記羽根部材と前記主板とが接合され、前記受け入れ凹部の内側外周縁には、凹部が形成され、
前記羽根部材は、溶着支持部を備え、前記溶着支持部に溶着用ピンを突設し、
前記シュラウドに前記溶着支持部が係合される溶着用係合部を形成するとともに、前記溶着用ピンが挿通される溶着用孔を形成し、前記溶着用ピンの溶融により前記羽根部材と前記シュラウドとが接合されていることを特徴とするターボファン。 In a turbofan including a main plate, a shroud, and a plurality of blade members,
The blade member includes a flange portion,
The main plate is formed with a receiving recess for receiving the blade member and the flange portion, a welding rib is formed in the receiving recess, and the blade member and the main plate are joined by melting of the welding rib, and the receiving recess is formed. A recess is formed on the inner peripheral edge of the recess,
The blade member includes a welding support portion, and a welding pin is provided on the welding support portion in a protruding manner.
The shroud is formed with a welding engagement portion with which the welding support portion is engaged, a welding hole through which the welding pin is inserted is formed, and the vane member and the shroud are formed by melting the welding pin. A turbo fan characterized in that and are joined together . 前記主板に、羽根支持用リブを形成したことを特徴とする請求項１に記載のターボファン。 The turbofan according to claim 1, wherein a blade supporting rib is formed on the main plate . 前記羽根部材は、２つの羽根部材の周縁部を接触させて形成されており、前記羽根支持用リブは、前記羽根部材の接触部を被覆することを特徴とする請求項２に記載のターボファン。 The turbofan according to claim 2 , wherein the blade member is formed by contacting peripheral portions of two blade members, and the blade supporting rib covers a contact portion of the blade member. .. 前記溶着用リブは、前記受け入れ凹部の外周近傍に形成されていることを特徴とする請求項１から請求項３のいずれか一項に記載のターボファン。 The turbofan according to any one of claims 1 to 3, wherein the welding rib is formed near the outer periphery of the receiving recess . 前記溶着用リブは、前記フランジ部の外周近傍に形成されていることを特徴とする請求項１から請求項３のいずれか一項に記載のターボファン。 The turbofan according to any one of claims 1 to 3, wherein the welding rib is formed in the vicinity of the outer periphery of the flange portion . 前記溶着用ピンの溶融後の形状は、前記溶着用ピンと前記溶着用孔との境界部分の厚さ寸法が中央部より大きい形状であることを特徴とする請求項１に記載のターボファン。 The turbofan according to claim 1 , wherein the shape of the welding pin after melting is such that the thickness dimension of the boundary portion between the welding pin and the welding hole is larger than the central portion . 前記溶着用係合部の前記溶着用孔の周囲には、溶着ガイド用座部が形成されていることを特徴とする請求項１に記載のターボファン。 The turbofan according to claim 1 , wherein a welding guide seat portion is formed around the welding hole of the welding engagement portion . 前記溶着用ピンの先端部中央には、凹部が形成されていることを特徴とする請求項１に記載のターボファン。 The turbofan according to claim 1 , wherein a recess is formed at the center of the tip of the welding pin .
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