CN108691804A - 涡轮风扇 - Google Patents

涡轮风扇 Download PDF

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Publication number
CN108691804A
CN108691804A CN201810226980.5A CN201810226980A CN108691804A CN 108691804 A CN108691804 A CN 108691804A CN 201810226980 A CN201810226980 A CN 201810226980A CN 108691804 A CN108691804 A CN 108691804A
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blade part
fitting portion
turbofan
welding
mainboard
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CN108691804B (zh
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岩井晴义
礒部竜也
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Nisshinbo Mechatronics Inc
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Nisshinbo Mechatronics Inc
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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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • 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
    • 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
    • B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
    • B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
    • 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
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05D2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/44—Resins

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

本发明的目的在于提供一种较现有技术的涡轮风扇可提高通过超声波焊接的焊接强度的涡轮风扇。所述涡轮风扇，利用热可塑性树脂各别成型具备多个焊接嵌合部的主板或护罩，及与所述多个焊接嵌合部相同数量的叶片部件之后，通过超声波焊接将主板或护罩和叶片部件组装成一体，所述焊接嵌合部具备围绕***焊接嵌合部的叶片部件周围且垂直形成的壁部，且在底部内侧面具备倾斜部；所述叶片部件在***所述焊接嵌合部并与所述倾斜部接触的状态下，与主板或护罩进行超声波焊接。

Description

涡轮风扇
技术领域
本发明涉及一种搭载于空调机的由热可塑性树脂成型的涡轮风扇，涉及一种可实现理想的焊接强度的涡轮风扇。
背景技术
现有技术的涡轮风扇通过如下三种方法制造而成。
第一、利用热可塑性树脂各别成型主板和多个叶片成为一体的风扇主体及护罩之后，通过超声波焊接等结合的方法；
第二、利用热可塑性树脂各别成型在护罩的背面一体形成多个叶片的风扇主体及主板之后，通过超声波焊接等结合的方法；
第三、利用热可塑性树脂单独成型主板、护罩及多个叶片之后，通过超声波焊接等结合的方法。
在所述各方法中，在主板或护罩具备与叶片部件配合的嵌合部。在所述嵌合部内配置焊接边缘，将要结合的部件与所述焊接边缘接触之后，在施加加压力的同时施加超声波振动，则焊接边缘熔融使两个部件结合。
为提高涡轮风扇的性能，需在确认作为涡轮风扇的构成部件的主板、护罩及叶片部件的结合后的尺寸的同时，提高结合强度。根据图9(a)、图9(b)、图9(c)对现有技术的产品进行说明。现有技术的涡轮风扇，向主板92的嵌合部924嵌入护罩的叶片部934进行预组装之后，通过超声波焊接制造而成。在预组装状态下，叶片部934通过嵌合部924的壁部925进行定位，且其底部934B与焊接边缘926处于接触状态。焊接边缘926的截面略呈三角形状，在嵌合部924的底部具备一列至两列。所述利用焊接边缘的组装方法中，为提高超声波焊接时相互部件的结合强度延长焊接长度是受到限制的，因此存在随着提高涡轮风扇的性能而无法满足提高焊接强度的要求的问题。
发明内容
[发明所要解决的问题]
鉴于所述情况，本发明的目的在于提供一种较之现有技术的涡轮风扇可提高通过超声波焊接的焊接强度的涡轮风扇。
[解决问题的技术手段]
为达到所述目的，第一实施例的涡轮风扇，
利用热可塑性树脂各别成型具备多个焊接嵌合部的主板或护罩，及与所述多个焊接嵌合部相同数量的叶片部件之后，通过超声波焊接将主板或护罩和叶片部件组装成一体，其中，所述焊接嵌合部具备围绕***焊接嵌合部的叶片部件周围且垂直形成的壁部，且在底部内侧面具备倾斜部；
所述叶片部件在***所述焊接嵌合部并与所述倾斜部接触的状态下，与主板或护罩进行超声波焊接。
第一实施例的涡轮风扇具有如下效果：
叶片部件***主板或护罩的焊接嵌合部，通过超声波焊接结合。焊接嵌合部为具备垂直形成以围绕叶片部件的周围的壁部的构成，叶片部件可实现高精密度的定位。另外，在焊接嵌合部的底部的内侧面具备围绕叶片部件的边缘部的倾斜部。叶片部件的底面的边缘部的整个周围与所述焊接嵌合部内的倾斜部接触。因叶片部件的边缘部以尖锐的形状形成，因此叶片部件的整个边缘部的周围存在焊接边缘。因此，叶片部件的整个周围与焊接嵌合部的倾斜部焊接。因此，较之现有技术，焊接长度变长，焊接强度得到明显提高。
第二实施例的涡轮风扇，在第一实施例的基础上，其中在所述焊接嵌合部的底部，具备与所述叶片部件接触的带状的凸部。
根据第二实施例的涡轮风扇，在叶片部件与焊接嵌合部的倾斜部焊接时，在焊接的过程中叶片部件的底部与带状的凸部接触，从而防止过度焊接，同时可确保涡轮风扇的最终尺寸。
第三实施例的涡轮风扇，在第一实施例或第二实施例的基础上，其中，在所述焊接嵌合部的底部和焊接后的所述叶片部件之间具备空间。
第三实施例的涡轮风扇具有如下效果：
在焊接嵌合部的底部和焊接的叶片部件之间具备空间。所述空间可用作焊接时过度熔融的树脂的收容空间。焊接时过度熔融的树脂收容于所述空间，从而不会妨碍焊接部分的焊接。因此，容易确保涡轮风扇的最终尺寸，且可稳定确保原有的焊接强度。
附图说明
图1为表示组装本发明的实施例的涡轮风扇的主板及具备叶片的护罩时的安装状态的斜视图；
图2为表示本实施例的涡轮风扇的完成状态的斜视图；
图3为本实施例的涡轮风扇的主板的整体概略图(斜视图)；
图4为本实施例的涡轮风扇的主板的整体概略图(平面图)；
图5为配置于本实施例的涡轮风扇的主板的焊接嵌合部的说明图；
图6为图5的焊接嵌合部的部分放大图；
图7(a)、图7(b)为超声波焊接本实施例的涡轮风扇前后状态的说明图；
图8为本实施例的涡轮风扇的超声波焊接部的放大图；
图9(a)、图9(b)、图9(c)为焊接现有技术的涡轮风扇时的焊接边缘的形态说明图。
附图标号说明
10：涡轮风扇；
12：主板；
13：护罩；
92：主板(对现有技术的产品)；
121：凸台；
122：衬套；
124：焊接嵌合部；
125：壁部；
126：空间；
128：倾斜面；
129：凸部；
131：护罩；
132：开口部；
133：周边部；
134：叶片部；
134B：底部；
134C：边缘部；
134S：侧面；
924：嵌合部(对现有技术的产品)；
925：壁部(对现有技术的产品)；
926：焊接边缘(对现有技术的产品)；
934：叶片部(对现有技术的产品)；
934B：底部(对现有技术的产品)；
M：焊接部；
N：熔融树脂。
具体实施方式
下面，根据图1至图8对本发明的涡轮风扇进行说明。
图1为表示组装本发明的实施例的涡轮风扇的主板及具备叶片的护罩时的安装状态的斜视图；图2为表示本实施例的涡轮风扇的完成状态的斜视图；图3为本实施例的涡轮风扇的主板的整体概略图(斜视图)；图4为本实施例的涡轮风扇的主板的整体概略图(平面图)；图5为配置于本实施例的涡轮风扇的主板的焊接嵌合部的说明图；图6为图5的焊接嵌合部的部分放大图；图7(a)为超声波焊接本实施例的涡轮风扇前的状态的说明图；图7(b)为超声波焊接后的状态的说明图；图8为本实施例的涡轮风扇的超声波焊接部的放大图。
目前为止的涡轮风扇利用热可塑性树脂各别成型各部件并通过超声波焊接组装结合(焊接)制造。对为提高焊接后的涡轮风扇的焊接强度的各部件的构成及结构，以将在护罩一体成型叶片部件(下称“叶片部”)的具备叶片的护罩和主板，通过超声波焊接结合的涡轮风扇为例进行说明。另外，本发明不受本实施例的限制。
图1表示安装构成涡轮风扇10的圆盘状的主板12、具备叶片的护罩13的状态。图2为本实施例的涡轮风扇10完成状态。具备叶片的护罩13在形成风扇的外部空气吸入管道的护罩131上具备与主板12结合的多个叶片部134。各部件使用热可塑性树脂各别挤出成型。具备叶片的护罩13的叶片部134***配置于主板12的周边部的多个位置的焊接嵌合部124组装结合。各部件通过超声波焊接结合。另外，叶片部134的结构将在<3>中详述，但如图1所示，具备推送风的正压面和作为其背面的负压面。在本实施例的说明中，对叶片部134从其顶部到底部具备相同形状(直的)的情况进行说明。另外，叶片部134的形状为实现涡轮风扇的送风特性，正压面和负压面也可以是所需曲面形状。
<1>主板的结构
如图1至图4所示，主板12具备位于中央部且用于罩住马达的突出状的衬套122，及位于衬套122的中心部且供马达轴沿高度方向(图1和图2的上下方向)***固定的凸台121。另外，如图3及图4所示，在主板12的周边部具备与具备叶片的护罩13的叶片部134相同数量的在与具备叶片的护罩13组装结合时供叶片部134***的焊接嵌合部124。
焊接嵌合部124的构成如图5及图6所示。包括具备一定高度及厚度并围绕在主板12上的壁部125、倾斜面128及带状的凸部129。倾斜面128围绕焊接嵌合部124的内侧面的底部。另外，带状的凸部129配置于焊接嵌合部的底部且其上面为平坦状。另外，虽然在本实施例中，所述带状的凸部129在一个焊接嵌合部124具备一个，但也可以圆形等形状具备多个。如图1所示的具备叶片的护罩13的叶片部134***焊接嵌合部124。叶片部134的底部134B为平坦的形状。当叶片部134***所述焊接嵌合部124，则所述叶片部134的底部134B的周边部(边缘部)134C的整个周围与配置于主板12的焊接嵌合部124的倾斜面128处于接触的状态。
图7(a)为主板12和叶片部134通过超声波焊接结合之前的状态。如图7(b)所示，焊接结束之后，***焊接嵌合部124的叶片部134的底部134B与带状的凸部129上的平坦部接触，从而即使受到超声波焊接时的加压力，也可使各叶片部134以稳定的姿势焊接结合于主板12而成为如图8所示的状态。
<2>具备叶片的护罩的结构
根据图1对具备叶片的护罩13进行说明。具备叶片的护罩13由护罩131和叶片部134构成。如图1所示，在中央部具备大的开口部132。周边部133沿外周方向略呈倾斜面。另外，在周边部133具备与***主板12的叶片部134相同数量的焊接嵌合部124(请参考图1)。
<3>叶片部的结构
如图7(a)、图7(b)所示，***焊接嵌合部124的具备叶片的护罩13的各叶片部134的部分的底部134B的周边部分由尖锐的边缘部构成。所述边缘部134C在焊接具备叶片的护罩和主板时起到焊接边缘的作用。另外，如图1所示，叶片部134的形状为，推送风的正压面及其相反面，从叶片部134的顶部到底部具备相同形状(直的)。叶片部134因为是多个，为实现涡轮风扇的轻量化，可通过吹塑成型等方法实现空心化。
<4>涡轮风扇的组装结合
如图1所示，将所述构成的主板12、具备叶片的护罩13，通过向主板12的焊接嵌合部124***具备叶片的护罩13的叶片部134进行预组装。这样预组装的产品下称工件。此时，如图7(a)所示，各叶片部134的边缘部134C的整个周围处于与主板12的各焊接嵌合部124的倾斜面128接触的状态。如图7(a)所示，具备叶片的护罩13的叶片部134的底部134B的边缘部134C由尖锐的边缘状构成。所述边缘部134C的整个周围与围绕焊接嵌合部124的内侧面的底部的倾斜面128接触。另外，因叶片部134的侧面134S受焊接嵌合部的壁部125的导引而定位，超声波焊接之前的工件可确保稳定的姿势。
将所述预组装的工件搭载于超声波焊接器的夹具上。将工件的具备叶片的护罩13的一定位置用超声波焊接器的焊头(horn)接触加压，则相当于焊接边缘的叶片部134的边缘部134C与焊接嵌合部的倾斜面128的部分熔融结合成为如图7(b)所示的状态，从而使工件成为一体。将工件搭载于超声波焊接器的夹具上的方法，可以是如图1所示的将主板12安装于夹具之上，还可以是反转将具备叶片的护罩安装于夹具上。
进一步地，以图8说明超声波焊接加工过程。与焊接嵌合部124的倾斜面128(请参考图7(a)、图7(b))接触的叶片部134的边缘部134C起到焊接边缘的作用，以熔融边缘部134C和倾斜面128的接触部，叶片部的底部134B下降与带状的凸部129接触，边缘部134C成为焊接部M。
另外，在配置于焊接嵌合部的底部的带状的凸部129的周边具备空间126。在焊接过程中，熔融树脂中不参与叶片部134的边缘部134C和倾斜面128的结合的熔融树脂N将聚集在位于其下部的空间126内。因此过度熔融的树脂妨碍焊接，从而降低焊接强度或导致焊接后的尺寸不均匀的问题皆可被消除。
根据所述本发明具有如下效果：因没有过多的焊接，从而可确保焊接后的涡轮风扇的规定的产品尺寸。另外，较之如图9(a)、图9(b)、图9(c)所示的利用焊接边缘焊接的现有技术的产品，焊接长度变长，从而可显著提高焊接强度。另外，通过焊接嵌合部124内的带状的凸部129的作用，具备叶片的护罩13的叶片部134和主板12可在确保各部件的位置对齐，以稳定的姿势被均匀地超声波焊接。这样得到的涡轮风扇的性能明显高于现有技术的产品。

Claims (3)

1.一种涡轮风扇，利用热可塑性树脂各别成型具备多个焊接嵌合部的主板或护罩，及与所述多个焊接嵌合部相同数量的叶片部件之后，通过超声波焊接将所述主板或所述护罩和所述叶片部件组装成一体，其特征在于：
所述焊接嵌合部具备围绕***所述焊接嵌合部的所述叶片部件周围且垂直形成的壁部，且在底部内侧面具备倾斜部；以及
所述叶片部件在***所述焊接嵌合部并与所述倾斜部接触的状态下，与所述主板或所述护罩进行超声波焊接。
2.根据权利要求1所述的涡轮风扇，其特征在于，在所述焊接嵌合部的所述底部，具备与所述叶片部件接触的带状的凸部。
3.根据权利要求1或2所述的涡轮风扇，其特征在于，在所述焊接嵌合部的所述底部和焊接后的所述叶片部件之间具备空间。
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