JP5911705B2 - Small air blower with double cylinder structure - Google Patents
Small air blower with double cylinder structure Download PDFInfo
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- JP5911705B2 JP5911705B2 JP2011259206A JP2011259206A JP5911705B2 JP 5911705 B2 JP5911705 B2 JP 5911705B2 JP 2011259206 A JP2011259206 A JP 2011259206A JP 2011259206 A JP2011259206 A JP 2011259206A JP 5911705 B2 JP5911705 B2 JP 5911705B2
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本発明は、マンホール内の酸欠防止、ガス中毒防止（作業環境の安全維持）とか、工場・地上での土管内作業等における煤煙・有毒ガス等の除去（作業内部に新鮮な空気を送風）、又は工場等における高熱作業の空気（冷気）送風手段として利用されている二重筒構造の小型送風装置（二重構造のハンディファン）に関する。 The present invention is to prevent oxygen deficiency in the manhole, gas poisoning (maintenance of work environment safety), removal of soot and toxic gas, etc. during work in the soil pipes at the factory and the ground (fresh air is blown into the work) In addition, the present invention relates to a small-sized air blower (double-structure handy fan) having a double-cylinder structure that is used as air (cold air) air-blowing means for high-temperature work in a factory or the like.
従来の小型送風機（ハンディファン）は、図７に示した従来技術がある。このハンディファンは、一方と他方が開放した、筒状の外筒でなる本体に、ダクト（蛇腹送風管）と、モータ並びにファンをそれぞれ収容する構造であり、外部電気を介してモータを駆動し、この駆動でファンを回して、外気（新鮮な空気）を吸込み、この外気を、ダクトを介して、必要とする箇所に、効率的に送風する構造である。しかし、外筒でなる本体では、ファン、モータと、吸込空気等による騒音問題と、これによる作業環境悪化、又は近辺の環境悪化等の問題がある。そこで、この騒音問題の解消、即ち、騒音低下が大切な要件となっている。その解決策を、先行文献より検討するが、具体的には、この種のハンディファンに関する分類では、原則として、有効と考えられる文献は見当たらなかったので、以下、関連する公報を示す。 A conventional small blower (handy fan) has the prior art shown in FIG. This handy fan has a structure in which a duct (bellows air blower tube), a motor and a fan are housed in a main body formed of a cylindrical outer cylinder, one of which is open, and the motor is driven via external electricity. In this structure, the fan is rotated to suck in the outside air (fresh air), and the outside air is efficiently blown to a necessary place through the duct. However, the main body formed of the outer cylinder has problems such as noise caused by a fan, a motor, intake air, and the like, work environment deterioration due to this, and environmental deterioration in the vicinity. Therefore, elimination of this noise problem, that is, noise reduction is an important requirement. Although the solution is examined from the prior literature, specifically, in this type of handy fan classification, as a general rule, no valid literature was found, so the following related publications are shown.
◎ 特開平８−２８５３４１号公報の文献が挙げられる（文献１とする）が、この文献は、換気管整理を図り、かつ持運びに有効な換気管収納ケースと換気装置の構造に関する。この目的を達成するために、換気管収容ケースを、長手方向において、半割り形状とし、この半割り形状を緊締具で、筒体とするとともに、この換気管収容ケースの端部に、換気管（ダクト）の自由端を、緊締する内鍔片（ストッパ部）を設ける構造である。しかし、この発明は、騒音問題を解消するものでなく、逆に、騒音を外部に拡散する問題を抱えているように考えられる。 A document of Japanese Patent Application Laid-Open No. 8-285341 is cited (referred to as Document 1). This document relates to the structure of a ventilation pipe storage case and a ventilation device that are effective for carrying out ventilation pipe arrangement and carrying. In order to achieve this object, the ventilation pipe housing case has a half-divided shape in the longitudinal direction, and this half-divided shape is formed into a cylindrical body with a fastener, and at the end of the ventilation pipe housing case, This is a structure in which an inner flange piece (stopper portion) for tightening the free end of the (duct) is provided. However, the present invention does not solve the noise problem, and conversely, it seems to have a problem of diffusing noise to the outside.
◎ 実開平５−１７２００号公報の文献が挙げられる（文献２とする）が、この文献は、マンホールへの給気を図る給気用防音型送風装置であり、軸流送風機を、吸音材付のカバーで囲繞し、この消音材で、騒音吸収を図りつつ、外部への騒音脱漏防止を図ることを意図する。しかし、この考案は、ケース内面に吸音材を付設した構造であり、特段、創作力において優れた構造とは、考えられない。 ◎ There is a document of Japanese Utility Model Publication No. 5-17200 (referred to as Document 2). This document is a sound-proof air blower for supplying air to a manhole, and an axial fan is provided with a sound absorbing material. It is intended to prevent noise leakage to the outside while absorbing noise with this silencer. However, this device has a structure in which a sound absorbing material is attached to the inner surface of the case, and is not considered to be a structure that is particularly excellent in creativity.
◎ 実開平５−８７２８８号公報の文献が挙げられる（文献３とする）が、この文献は、複数の電源で、作動可能とする構造であり、例えば、バッテリー、自動車のシガレットライタ、又は商用電源を利用可能とし、利便性を図る構造である。従って、この考案は、騒音問題の解消、即ち、騒音低下等の問題を捉えていないので、本発明とは、乖離がある。 ◎ Japanese Utility Model Publication No. 5-87288 is cited (referred to as Reference 3), which is a structure that can be operated by a plurality of power sources, for example, a battery, a cigarette lighter for automobiles, or a commercial power source. It is a structure that can be used for convenience. Therefore, since this device does not capture the problem of noise problem, that is, noise reduction, it is different from the present invention.
尚、ハンディファンでないが、本出願人は、洗車機、又はオイルミストコレクタにおいて、幾多の消音手段を採用する。例えば、特開２００７−２４００８号公報の「送風機用の低騒音ファン装置」において、ケーシングの内壁面に吸音材を繞設し、消音を図る発明と、特開２０１１−１６１１５号公報の「オイルミストコレクタの騒音防止機構」において、ケーシングに設けたパンチング筒体と、複数のパンチング板とを設けで消音効果を図る発明とかある。しかし、これらの構造は、基本的な構造が異なり、本発明に採用するには、改良点がある。また、処理対象物が異なることから、採用するには、問題を抱えているものと、考えられる。 Although not a handy fan, the present applicant employs a number of silencers in car wash machines or oil mist collectors. For example, in the “low noise fan device for blower” disclosed in Japanese Patent Application Laid-Open No. 2007-24008, an invention is proposed in which a sound absorbing material is provided on the inner wall surface of the casing to mute the sound, and “oil mist” disclosed in Japanese Patent Application Laid-Open No. 2011-16115. In the “collector noise prevention mechanism”, there is an invention in which a punching cylinder provided in a casing and a plurality of punching plates are provided to achieve a silencing effect. However, these structures are different in basic structure, and there are improvements in adopting them in the present invention. In addition, since the processing objects are different, it is considered that there is a problem to adopt.
上記に鑑み、本発明は、ハンディファンに最適な、騒音解消、騒音低下等が図れる騒音防止（消音）装置を提供するが、その特徴は、以下のようになる。
イ） 内筒に、吸音材でなる連結筒部を形成することで、消音と、二重構造の小型送風装置を提供できる。
ロ） 吸音材でなる連結筒部を形成した、二重構造の小型送風装置であり、従来のハンディファンと同じ取扱と、重量が図れ（吸音材による軽量化）、かつ送風量の拡充が図れ、また移動時の持運びにも有効である。
ハ） 内外筒の間に、通路を形成し、かつこの外筒の一方を閉塞した二重筒構造の小型送風装置であり、吸込空気用の通路を、内筒の外側（外周）とすることで、ファン消音を図り、かつこの通路の空気を消音緩衝区域として活用すること、等にある。
ホ） 殊に、通路の空気を消音緩衝区域として活用し、かつ内筒に吸音材でなる連結筒部を形成することで、モータとファン消音効果と、装置の振動防止等を発揮できる。
へ） 通路の吸込側に、空気誘導部材としてのベルマウスを設けて、スムーズな外気（空気）の取入れと、この外気を、通路の一方（閉塞側）に、スムーズに移動可能とする。
ト） ダクトを、モータの尻側に設けた連結具で固定し、かつダクト吸込口の外周部を、内筒の内面に密着する構成であり、ダクトの着脱の容易化と、ダクトへの外気の流れとを確保できる。
チ） 連結筒部を構成する吸音材を、金属性の硬体で構成し、適度の強度確保と、内筒を無くしても、支障がない構造とすることにある。
リ） 外筒の吸込口の端部に設けたベルトと、端部との間に隙間を形成し、隙間は、ダクト収容時に、ダクトに設けたスプリングの反力で、圧着されてなくなり、また、隙間は、ダクトを延展する際に、ベルトの移動用のスペースとし、ベルトを、外筒の外面に移動可能とする構成であり、ダクトの内筒への収容と、ダクトの内筒からの容易な取出しを可能とする。
ヌ） ダクト吸込口に設けた帯体と、帯体に設けた取付腕とを利用し、モータに設けた螺軸に遊嵌し、かつ螺軸に螺着した止め具で、ダクト吸込口を、内筒の内面に密着して設けることで、ダクトの着脱の容易化と、ダクトと内筒との空気漏れを解消できる。
ル） 外筒の内側に、吸音材、又は邪魔板で、さらに消音を図る。
In view of the above, the present invention provides a noise prevention (silencer) device that is suitable for a handy fan and can eliminate noise, reduce noise, and the like, and its features are as follows.
B) By forming a connecting cylinder portion made of a sound absorbing material in the inner cylinder, it is possible to provide noise reduction and a double-structured small blower.
B) A small air blower with a double structure, which has a connecting cylinder part made of sound absorbing material. The same handling and weight as conventional handy fans can be achieved (weight reduction by sound absorbing material) and the amount of air flow can be expanded. It is also effective for carrying around when moving.
C) A small-sized air blower having a double-cylinder structure in which a passage is formed between the inner and outer cylinders, and one of the outer cylinders is closed, and the passage for intake air is the outer side (outer circumference) of the inner cylinder. In order to mute the fan, the air in this passage is used as a noise absorbing buffer area.
E) In particular, by utilizing the air in the passage as a noise absorbing buffer area and forming the connecting cylinder portion made of a sound absorbing material in the inner cylinder, it is possible to exert a noise reduction effect on the motor and the fan and prevent vibrations of the apparatus.
F) A bell mouth as an air guiding member is provided on the suction side of the passage so that smooth outside air (air) can be taken in and the outside air can be smoothly moved to one side (blocking side) of the passage.
G) The duct is fixed with a connector provided on the bottom side of the motor, and the outer periphery of the duct suction port is in close contact with the inner surface of the inner cylinder, facilitating the attachment / detachment of the duct and the outside air to the duct. Can be secured.
H) The sound-absorbing material that constitutes the connecting cylinder portion is made of a metal hard body, and it is intended to ensure a suitable strength and to have a structure that does not hinder even if the inner cylinder is eliminated.
B) A gap is formed between the belt provided at the end of the suction port of the outer cylinder and the end, and the gap is not crimped by the reaction force of the spring provided in the duct when the duct is accommodated. The gap is a space for moving the belt when the duct is extended, and the belt can be moved to the outer surface of the outer cylinder. The gap is accommodated in the inner cylinder of the duct and from the inner cylinder of the duct. Easy removal is possible.
N) Using a band provided at the duct inlet and an attachment arm provided at the band, the duct inlet is fitted with a stopper that is loosely fitted to the screw shaft provided on the motor and screwed to the screw shaft. By providing in close contact with the inner surface of the inner cylinder, it is possible to facilitate the attachment / detachment of the duct and to eliminate air leakage between the duct and the inner cylinder.
E) Further silence with a sound absorbing material or baffle on the inside of the outer cylinder.
請求項１の発明は、前記イ）〜ホ）の特徴を達成することを意図する。 The invention of claim 1 is intended to achieve the features (a) to (e).
請求項１は、内外筒の間に、吸込通路を形成し、この内筒にファンとモータ、及びダクトを設けるとともに、この外筒の他方を開放し、その一方を閉塞する二重筒構造の小型送風装置であって、
前記内筒の途中に、吸音材でなる連結筒部を形成するとともに、前記外筒の他方にある吸込口の端部に、ベルトを設け、このベルトと、この端部との間に隙間を形成し、
また、前記外筒の他方にある吸込通路の吸込口に、空気誘導部材を設ける構成とした二重筒構造の小型送風装置である。
According to a first aspect of the present invention, a suction passage is formed between the inner and outer cylinders, a fan, a motor, and a duct are provided in the inner cylinder, the other of the outer cylinders is opened, and one of them is closed. A small blower,
A connecting cylinder portion made of a sound absorbing material is formed in the middle of the inner cylinder , and a belt is provided at the end of the suction port on the other side of the outer cylinder, and a gap is formed between this belt and this end. Forming,
Moreover, it is a small air blower of the double cylinder structure which comprised the air induction member in the suction inlet of the suction passage in the other of the said outer cylinder .
請求項２の発明は、前記イ）〜ホ）と、へ）の特徴を達成することを意図する。 The invention of claim 2 is intended to achieve the features (a) to (e) and (v).
請求項２は、請求項１に記載の二重筒構造の小型送風装置であって、
前記空気誘導部材を、ベルマウスとする構成とした二重筒構造の小型送風装置である。
Claim 2 is a small-sized air blower having a double cylinder structure according to claim 1,
It is a small air blower having a double cylinder structure in which the air guiding member is a bell mouth.
請求項３の発明は、前記イ）〜ホ）と、ト）の特徴を達成することを意図する。 The invention of claim 3 intends to achieve the features (a) to (e) and (g).
請求項３は、請求項１に記載の二重筒構造の小型送風装置であって、
前記ダクトの吸込口を、前記モータの尻側に設けた連結具で固定するとともに、前記内筒の内面に設ける構成とした二重筒構造の小型送風装置である。
Claim 3 is a small-sized air blower having a double cylinder structure according to claim 1,
The duct is a small-sized air blower having a double cylinder structure in which the suction port of the duct is fixed by a connector provided on the bottom side of the motor and provided on the inner surface of the inner cylinder.
請求項４の発明は、前記イ）〜ホ）と、チ）の特徴を達成することを意図する。 The invention of claim 4 is intended to achieve the characteristics of the above a) to e) and h).
請求項４は、請求項１に記載の二重筒構造の小型送風装置であって、
前記吸音材を、金属性の硬体で構成するとともに、この吸音材を、前記内筒の一方筒部と、その他方筒部との間に設ける構成とした二重筒構造の小型送風装置である。
A fourth aspect of the present invention is a small-sized air blower having a double cylinder structure according to the first aspect,
The sound absorbing material is composed of a metallic hard body, and the sound absorbing material is a small-sized air blower having a double cylinder structure in which the sound absorbing material is provided between one cylindrical portion of the inner cylinder and the other cylindrical portion. is there.
請求項５の発明は、前記イ)〜ホ)と、ヌ)の特徴を達成することを意図する。
The invention of claim 5 is intended to achieve the characteristics of the above a) to e) and n).
請求項５は、請求項１に記載の二重筒構造の小型送風装置であって、
前記ダクト吸込口には、環状の帯体を設け、この帯体の内側に設けた取付腕の中心孔に螺着される前記モータの尻側に設けた螺軸と、この螺軸に螺着した止め具とを設ける構成とした二重筒構造の小型送風装置である。
A fifth aspect of the present invention is a small-sized air blower having a double cylinder structure according to the first aspect,
The duct suction port is provided with an annular band, and a screw shaft provided on the bottom side of the motor to be screwed into a central hole of a mounting arm provided inside the band, and screwed to the screw shaft. It is a small air blower with a double-cylinder structure in which the stopper is provided .
請求項６の発明は、前記イ)〜ホ)と、ル)の特徴を達成することを意図する。
The invention of claim 6 intends to achieve the features of the above a) to e) and b).
請求項６は、請求項１に記載の二重筒構造の小型送風装置であって、
前記内筒の内側には、吸音材、又は複数の邪魔板でなる吸音手段を有する構成とした二重筒構造の小型送風装置である。
Claim 6 is a small-sized air blower having a double cylinder structure according to claim 1,
The inside of the inner tube, a sound absorbing material, or a small blower arrangement and the double cylinder structure having a sound absorbing means comprising a plurality of baffles.
請求項１の発明は、内外筒の間に、吸込通路を形成し、内筒にファンとモータ、及びダクトを設けるとともに、外筒の他方を開放し、一方を閉塞する二重筒構造の小型送風装置であって、
内筒の途中に、吸音材でなる連結筒部を形成するとともに、外筒の他方にある吸込口の端部に、ベルトを設け、ベルトと、端部との間に隙間を形成し、
また、外筒の他方にある吸込通路の吸込口に、空気誘導部材を設ける構成とした二重筒構造の小型送風装置である。
The invention of claim 1 is a small-sized double cylinder structure in which a suction passage is formed between the inner and outer cylinders, a fan, a motor, and a duct are provided in the inner cylinder, the other of the outer cylinders is opened, and the other is closed. A blower,
In the middle of the inner cylinder, a connecting cylinder part made of a sound absorbing material is formed , a belt is provided at the end of the suction port on the other side of the outer cylinder, and a gap is formed between the belt and the end,
Moreover, it is a small-sized air blower of the double cylinder structure made into the structure which provides an air induction member in the suction inlet of the suction passage in the other of an outer cylinder.
これにより、請求項１は、前記イ）〜ホ）の特徴を達成できる。 Thereby, Claim 1 can achieve the characteristics of said a) -e).
請求項２の発明は、請求項１に記載の二重筒構造の小型送風装置であって、
空気誘導部材を、ベルマウスとする構成とした二重筒構造の小型送風装置である。
Invention of Claim 2 is a small air blower of the double cylinder structure of Claim 1,
It is a small-sized air blower having a double cylinder structure in which the air guiding member is a bell mouth.
これにより、請求項２は、前記イ）〜ホ）と、へ）の特徴を達成できる。 Thereby, Claim 2 can achieve the characteristics (a) to (e) and (f).
請求項３の発明は、請求項１に記載の二重筒構造の小型送風装置であって、
ダクトの吸込口を、モータの尻側に設けた連結具で固定するとともに、内筒の内面に設ける構成とした二重筒構造の小型送風装置である。
Invention of Claim 3 is a small air blower of the double cylinder structure of Claim 1,
The duct is a small blower having a double-cylinder structure in which the suction port of the duct is fixed by a connector provided on the bottom side of the motor and provided on the inner surface of the inner cylinder.
これにより、請求項３は、前記イ）〜ホ）と、ト）の特徴を達成できる。 Accordingly, the third aspect of the invention can achieve the features (a) to (e) and (g).
請求項４は、請求項１に記載の二重筒構造の小型送風装置であって、
吸音材を、金属性の硬体で構成するとともに、吸音材を、内筒の一方筒部と、その他方筒部との間に設ける構成とした二重筒構造の小型送風装置である。
A fourth aspect of the present invention is a small-sized air blower having a double cylinder structure according to the first aspect,
The sound-absorbing material is composed of a metallic hard body, and the sound-absorbing material is a small-sized air blower having a double-cylinder structure in which the sound-absorbing material is provided between one cylindrical portion of the inner cylinder and the other cylindrical portion .
これにより、請求項４は、前記イ）〜ホ）と、チ）の特徴を達成できる。 Thereby, the claim 4 can achieve the characteristics of the above a) to e) and h).
請求項５の発明は、請求項１に記載の二重筒構造の小型送風装置であって、
ダクト吸込口には、環状の帯体を設け、帯体の内側に設けた取付腕の中心孔に螺着されるモータの尻側に設けた螺軸と、螺軸に螺着した止め具とを設ける構成とした二重筒構造の小型送風装置である。
Invention of Claim 5 is a small air blower of the double cylinder structure of Claim 1,
The duct inlet, a band of the cyclic provided, a threaded shaft provided on the trailing edge of the motor is screwed into the center hole of the mounting arm provided on the inner side of the strip, and stopper was screwed into the screw shaft It is the small air blower of the double cylinder structure made into the structure which provides this.
これにより、請求項５は、前記イ)〜ホ)と、ヌ)の特徴を達成できる。
Thus, the fifth aspect of the present invention can achieve the characteristics (i) to (e) and n).
請求項６は、請求項１に記載の二重筒構造の小型送風装置であって、
内筒の内側には、吸音材、又は複数の邪魔板でなる吸音手段を有する構成とした二重筒構造の小型送風装置である。
Claim 6 is a small-sized air blower having a double cylinder structure according to claim 1,
Inside the inner cylinder, a sound absorbing material, or a small blower arrangement and the double cylinder structure having a sound absorbing means comprising a plurality of baffles.
これにより、請求項６は、前記イ)〜ホ)と、ル)の特徴を達成できる。 Accordingly, the sixth aspect of the invention can achieve the characteristics of the above a) to e) and b).
本発明の基本構造を、本発明のケーシングＡ（二重筒構造の小型送風装置）は、内外筒１、２でなり、この内外筒１、２の間（その外面１ｂと内面２ａ）には、通路３を形成する。 The basic structure of the present invention, the casing A of the present invention (small air blower having a double-cylinder structure) is composed of inner and outer cylinders 1 and 2, and between the inner and outer cylinders 1 and 2 (its outer surface 1b and inner surface 2a) The passage 3 is formed.
この内筒１は、内筒１の外面１ｂと外筒２の内面２ａとの間に複数本設けた支持腕５を介して、外筒２内に架承する。この架承により、前記通路３が形成される。そして、この内筒１は、金属製の一方筒部１００（筒部：筒体）と、金属製の他方筒部１０１と、この一方筒部１００、及び他方筒部１０１を繋ぐ、金属製の吸音材（制振材）でなる吸音筒部１０２とで構成される。尚、この吸音筒部１０２は、内筒１の一部か、必要により全部でも可能である。この一部等の場合には、より消音と、防振等に有効と考えられる。この吸音筒部１０２は、メッシュの間にアルミ繊維を挿入し、プレス成型した構造であり、多数の気孔を備え、吸音性と、通気性、防振性等を備える。尚、その他として、アルミ粒子をプレス成型した構造で、かつ多数の気孔を備え構成も採用可能と考えられる。また、この内筒１に設けた複数本の支持腕６で、その内部にモータ７を架承する。このモータ７の出力軸７００（回転軸）にはファン８が、回転可能に設けられている。この内筒１内には、ビニール膜１０ａとスプリング１０ｂで構成する蛇腹構造のダクト１０が収容される。このダクト１０のダクト吸込口１０００（の外周部）は、内筒１の内面１ａに、密着して設けるとともに、モータ７の尻側７ａに、連結具を介して固止される。この一例の連結具は、このビニール膜のダクト吸込口１０００には環状の帯体１００１を被覆し、この帯体１００１の内側には、椀状で、かつ複数本のバネ板材でなる取付腕１００２を設けた構成とし、この取付腕１００２の中心孔１００２ａを、モータ７の尻７ａ側に設けた螺軸７０１に遊嵌するとともに、この螺軸７０１に螺着した止め具７０２で固定される。この固定により、ダクト１０がモータ７に取付けられるとともに、ダクト吸込口１０００を、内筒１の内面１ａに、密着して設けられる。このように、ダクト１０は、モータ７と内筒１に、簡易に取付け、又は取外される。尚、吸音筒部１０２は、ダクト１０のダクト吸込側１０ｃに相当する箇所（モータ７の一部を含む）を囲繞する構造が望ましい。その理由は、経済性と、強度の確保、並びに軽量化等を達成するためである。 The inner cylinder 1 is mounted in the outer cylinder 2 via a plurality of support arms 5 provided between the outer surface 1 b of the inner cylinder 1 and the inner surface 2 a of the outer cylinder 2. The passage 3 is formed by this support. And this inner cylinder 1 is a metal one cylinder part 100 (cylinder part: cylinder), the metal other cylinder part 101, and this one cylinder part 100 and the other cylinder part 101 are connected with metal. It is comprised with the sound-absorbing cylinder part 102 which consists of a sound-absorbing material (damping material). The sound absorbing cylinder portion 102 may be a part of the inner cylinder 1 or may be all if necessary. In the case of this part, etc., it is considered effective for noise reduction and vibration isolation. The sound absorbing cylinder portion 102 has a structure in which an aluminum fiber is inserted between meshes and is press-molded. In addition, it is considered that a structure having a press-molded aluminum particle and having a large number of pores can also be adopted. A plurality of support arms 6 provided on the inner cylinder 1 supports a motor 7 therein. A fan 8 is rotatably provided on the output shaft 700 (rotary shaft) of the motor 7. In the inner cylinder 1, a bellows-structured duct 10 composed of a vinyl film 10a and a spring 10b is accommodated. A duct suction port 1000 (outer peripheral portion) of the duct 10 is provided in close contact with the inner surface 1a of the inner cylinder 1 and is fixed to the buttocks 7a of the motor 7 via a connector. In this example of the connector, the duct suction port 1000 of the vinyl film covers an annular belt body 1001, and a mounting arm 1002 made of a plurality of spring plates is formed on the inner side of the belt body 1001. The center hole 1002a of the mounting arm 1002 is loosely fitted to a screw shaft 701 provided on the bottom 7a side of the motor 7, and is fixed by a stopper 702 screwed to the screw shaft 701. By this fixing, the duct 10 is attached to the motor 7, and the duct suction port 1000 is provided in close contact with the inner surface 1 a of the inner cylinder 1. Thus, the duct 10 is easily attached to or detached from the motor 7 and the inner cylinder 1. The sound absorbing cylinder portion 102 desirably has a structure surrounding a portion (including a part of the motor 7) corresponding to the duct suction side 10c of the duct 10. The reason for this is to achieve economic efficiency, ensuring strength, reducing weight, and the like.
尚、外筒２の一方２ｃは、蓋１１で閉塞されるとともに、この蓋１１と内筒１との間には、前記通路３の終端開口３ａに繋がる通路３００（終端通路）が形成される。この通路３００は、内筒１の一方開口１ｄに連通されるとともに、内筒１の通路１ｃを解して、ダクト１０のダクト吸込口１０００に繋がる。また、この外筒２の他方２ｄは開放であり、内筒１の外面１ｂとの間が、外気の吸込口２０１となる。この外筒２の他方２ｄで、かつその外面２ｂには、バックル１２００（必要により）を備えたベルト１２（バンド）が可動自在に設けられており、このベルト１２と他方２ｄの端部２ｄ１との間には、隙間１３が形成されている。この隙間１３は、ダクト１０を、内筒１に収容した際に、ダクト１０に設けたスプリング１０ｂの反力で、Ｘ方向に緊締されて、ダクト開口１００３（給気開口）がベルト１２に圧着されて、前記隙間１３は、無くなる。また、このダクト１０を開放する（ダクト開口１００３より順次、内筒１の他方開口１ｄより延展した）際に、隙間１３を利用して（隙間１３が有ることで、ベルト１０が、外筒２の外面２ｂを越え得る）、このベルト１２を、外筒２の外面２ｂ（周辺）に移動可能とする。 One end 2 c of the outer cylinder 2 is closed by a lid 11, and a passage 300 (terminal passage) connected to the terminal opening 3 a of the passage 3 is formed between the lid 11 and the inner cylinder 1. . The passage 300 is communicated with the one opening 1 d of the inner cylinder 1 and is connected to the duct suction port 1000 of the duct 10 through the passage 1 c of the inner cylinder 1. Further, the other 2d of the outer cylinder 2 is open, and a space between the outer surface 1b of the inner cylinder 1 and the outer air suction port 201 becomes an outside air inlet 201. A belt 12 (band) provided with a buckle 1200 (if necessary) is movably provided on the other 2d of the outer cylinder 2 and on the outer surface 2b thereof, and an end 2d1 of the belt 12 and the other 2d, A gap 13 is formed between them. The gap 13 is tightened in the X direction by the reaction force of the spring 10 b provided in the duct 10 when the duct 10 is accommodated in the inner cylinder 1, and the duct opening 1003 (air supply opening) is crimped to the belt 12. As a result, the gap 13 disappears. Further, when the duct 10 is opened (sequentially extending from the other opening 1d of the inner cylinder 1 from the duct opening 1003), the gap 10 is used (the presence of the gap 13 allows the belt 10 to be connected to the outer cylinder 2). The belt 12 can be moved to the outer surface 2b (periphery) of the outer cylinder 2.
図中、１５は、ベルマウスでなる空気誘導部材で、この空気誘導部材１５は、通路３の吸込口３ｂに設ける。この空気誘導部材１５を利用し、この通路３に外気を取入れるとともに、通路３の終端開口３ａに、スムーズに送風する。 In the figure, 15 is an air guiding member made of a bell mouth, and this air guiding member 15 is provided in the suction port 3 b of the passage 3. Using this air guiding member 15, outside air is taken into the passage 3 and smoothly blown into the terminal opening 3 a of the passage 3.
また、図６−１は外筒２の内面２ａ、及び／又は、蓋１１の内面の全体に、吸音材１６を張装し、さらに消音効果を図る。また、図６−１は外筒２の内面２ａ、又は、蓋１１の内面の全体に、邪魔板１７を突設し、さらに消音効果を図る。 Further, in FIG. 6A, the sound absorbing material 16 is stretched over the inner surface 2 a of the outer cylinder 2 and / or the entire inner surface of the lid 11, thereby further achieving a silencing effect. Further, in FIG. 6A, a baffle plate 17 is protruded from the inner surface 2 a of the outer cylinder 2 or the entire inner surface of the lid 11 to further reduce the noise.
図中１８はコード、２０はコンセント、２１はスイッチ、２２は把手を、それぞれ示す。 In the figure, 18 indicates a cord, 20 indicates an outlet, 21 indicates a switch, and 22 indicates a handle.
続いて、外気（空気）の流れを説明すると、図５の如く、ベルト１２を外し、ダクト１０を延展し、そのダクト開口１００３を、マンホールの下部に設置する。そして、スイッチ２１をオンすることで、モータ７が駆動し、ファン８が回転する。図１に矢視で示した如く、このファン８の回転により、通路３に設けたベルマウス１５より、外気を吸込み、通路３を通った後、通路３００に到る。その後、吸込み外気の略全部が、内筒１の一方開口１ｃと、ダクト吸込口１０００を経由して、ダクト１０内に至る。そして、このダクト１０のダクト開口１００３より、マンホール内に、外気が供給される構造である。この通路３を流れる外気の一部が、吸音材でなる吸音筒部１０２の気孔を通過して、内筒１とダクト１０の隙間に通ることで、装置全体の消音効果が図れること、又は装置全体（内外筒１、２）に及ぼす振動防止、又はスムーズな外気の流れを確保できること、等に役立つ構造である。 Next, the flow of outside air (air) will be described. As shown in FIG. 5, the belt 12 is removed, the duct 10 is extended, and the duct opening 1003 is installed in the lower part of the manhole. When the switch 21 is turned on, the motor 7 is driven and the fan 8 rotates. As indicated by arrows in FIG. 1, the rotation of the fan 8 sucks outside air from the bell mouth 15 provided in the passage 3, passes through the passage 3, and reaches the passage 300. Thereafter, substantially all of the suction outside air reaches the inside of the duct 10 via the one opening 1 c of the inner cylinder 1 and the duct suction port 1000. And it is the structure where external air is supplied in the manhole from the duct opening 1003 of this duct 10. Part of the outside air flowing through the passage 3 passes through the pores of the sound absorbing cylinder portion 102 made of a sound absorbing material and passes through the gap between the inner cylinder 1 and the duct 10, so that the noise reduction effect of the entire apparatus can be achieved, or the apparatus This structure is useful for preventing vibration on the whole (inner and outer cylinders 1 and 2) or ensuring a smooth flow of outside air.
本発明の装置と、異なる装置であっても、同様な消音効果と、ダクトの容易な取付け、取外し、並びにダクトの収容の容易化等を達成できる構造は、本発明の範疇である。 The structure which can achieve the same silencing effect, easy attachment and detachment of the duct, and easy accommodation of the duct even if the apparatus is different from the apparatus of the present invention is within the scope of the present invention.
Ａ ケーシング
１ 内筒
１ａ 内面
１ｂ 外面
１ｃ 通路
１００ 一方筒部
１０１ 他方筒部
１０２ 吸音筒部
２ 外筒
２ａ 内面
２ｂ 外面
２ｃ 一方
２ｄ 他方
２ｄ１ 端部
２０１ 吸込口
３ 通路
３ａ 開口
３ｂ 吸込口
３００ 通路
５ 支持腕
６ 支持腕
７ モータ
７ａ 尻側
７００ 出力軸
７０１ 螺軸
７０２ 止め具
８ ファン
１０ ダクト
１０ａ ビニール膜
１０ｂ スプリング
１０００ ダクト吸込口
１００１ 帯体
１００２ 取付腕
１００２ａ 孔
１００３ ダクト開口
１１ 蓋
１２ ベルト
１２００ バックル
１３ 隙間
１５ ベルマウス
A casing 1 inner cylinder 1a inner surface 1b outer surface 1c passage 100 one cylinder portion 101 other cylinder portion 102 sound absorbing cylinder portion 2 outer cylinder 2a inner surface 2b outer surface 2c one 2d other 2d1 end portion 201 suction port 3 passage 3a opening 3b suction port 300 passage 5 Support arm 6 Support arm 7 Motor 7a Bottom side 700 Output shaft 701 Screw shaft 702 Stopper 8 Fan 10 Duct 10a Vinyl film 10b Spring 1000 Duct inlet 1001 Band body 1002 Mounting arm 1002a Hole 1003 Duct opening 11 Lid 12 Belt 13 Buckle 13 Clearance 15 Bellmouth
Claims (6)
前記内筒の途中に、吸音材でなる連結筒部を形成するとともに、前記外筒の他方にある吸込口の端部に、ベルトを設け、このベルトと、この端部との間に隙間を形成し、
また、前記外筒の他方にある吸込通路の吸込口に、空気誘導部材を設ける構成とした二重筒構造の小型換気装置。
A small ventilator with a double-cylinder structure in which a suction passage is formed between the inner and outer cylinders, a fan, a motor, and a duct are provided in the inner cylinder, the other of the outer cylinders is opened, and the other is closed. And
A connecting cylinder portion made of a sound absorbing material is formed in the middle of the inner cylinder , and a belt is provided at the end of the suction port on the other side of the outer cylinder, and a gap is formed between this belt and this end. Forming,
In addition, a small-sized ventilator having a double-cylinder structure in which an air guide member is provided at a suction port of a suction passage on the other side of the outer cylinder .
前記空気誘導部材を、ベルマウスとする構成とした二重筒構造の小型換気装置。
It is a small ventilation apparatus of the double cylinder structure according to claim 1,
A small ventilator having a double cylinder structure in which the air guiding member is a bell mouth.
前記ダクトの吸込口を、前記モータの尻側に設けた連結具で固定するとともに、前記内筒の内面に設ける構成とした二重筒構造の小型換気装置。
It is a small ventilation apparatus of the double cylinder structure according to claim 1,
A small ventilator having a double-cylinder structure in which the suction port of the duct is fixed by a connector provided on the bottom side of the motor and provided on the inner surface of the inner cylinder.
前記吸音材を、金属性の硬体で構成するとともに、この吸音材を、前記内筒の一方筒部と、その他方筒部との間に設ける構成とした二重筒構造の小型換気装置。
It is a small ventilation apparatus of the double cylinder structure according to claim 1,
A small ventilator having a double-cylinder structure in which the sound absorbing material is formed of a metallic hard body, and the sound absorbing material is provided between one cylindrical portion of the inner cylinder and the other cylindrical portion .
前記ダクト吸込口には、環状の帯体を設け、この帯体の内側に設けた取付腕の中心孔に螺着される前記モータの尻側に設けた螺軸と、この螺軸に螺着した止め具とを設ける構成とした二重筒構造の小型換気装置。
It is a small ventilation apparatus of the double cylinder structure according to claim 1,
The duct suction port is provided with an annular band, and a screw shaft provided on the bottom side of the motor to be screwed into a central hole of a mounting arm provided inside the band, and screwed to the screw shaft. A small ventilator with a double-cylinder structure, which is provided with a stopper.
前記内筒の内側には、吸音材、又は複数の邪魔板でなる吸音手段を有する構成とした二重筒構造の小型換気装置。 It is a small ventilation apparatus of the double cylinder structure according to claim 1,
The inside of the inner cylinder, sound absorbing material, or a small ventilator configuration as the double cylinder structure having a sound absorbing means comprising a plurality of baffles.
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| JPH06346900A (en) * | 1993-06-08 | 1994-12-20 | Ebara Corp | Suspention type ventilating device |
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