JP2008295922A - Respiratory protection device with electric fan by use of hole element - Google Patents

Respiratory protection device with electric fan by use of hole element Download PDF

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Publication number
JP2008295922A
JP2008295922A JP2007147779A JP2007147779A JP2008295922A JP 2008295922 A JP2008295922 A JP 2008295922A JP 2007147779 A JP2007147779 A JP 2007147779A JP 2007147779 A JP2007147779 A JP 2007147779A JP 2008295922 A JP2008295922 A JP 2008295922A
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Prior art keywords
electric fan
exhaust valve
hall element
valve
intake
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JP2007147779A
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Japanese (ja)
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Yuichi Fujiwara
雄一 藤原
Hiroyuki Ide
弘之 井出
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Shigematsu Works Co Ltd
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Shigematsu Works Co Ltd
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Priority to JP2007147779A priority Critical patent/JP2008295922A/en
Publication of JP2008295922A publication Critical patent/JP2008295922A/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/08—Component parts for gas-masks or gas-helmets, e.g. windows, straps, speech transmitters, signal-devices

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  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective equipment for breath with an electric fan decreasing the bungle as much as possible even under a dirty environment of oose, dust, oil and the like. <P>SOLUTION: The protective equipment for breath with an electric fan is characterized by that a magnet is set at a part of an exhaling or inhaling valve, and the opening and closing of the exhaling or inhaling valve is detected by hole elements, and the air supply is controlled in accordance to the breath. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は電動ファン付き呼吸用保護具に関し、特に塵、埃、油等の汚れた環境においても誤作動を可及的に少なくした電動ファン付き呼吸用保護具に関する。   The present invention relates to a respirator with an electric fan, and more particularly to a respirator with an electric fan that can reduce malfunction as much as possible even in a dirty environment such as dust, dust, and oil.

従来、電動ファン付き呼吸用保護具においては、常に一定流量で空気を供給するタイプと、呼吸に合わせて空気を供給するタイプがある。呼吸に合わせて空気を供給するタイプにはダイヤフラム等の圧力センサにより内圧で検知するもの、排気弁の開閉をフォトインタラプタで検知したもの等がある。   Conventionally, there are two types of respirators equipped with an electric fan: a type that always supplies air at a constant flow rate and a type that supplies air according to respiration. There are types that supply air in accordance with respiration, such as those that detect with an internal pressure using a pressure sensor such as a diaphragm, and those that detect opening and closing of an exhaust valve with a photo interrupter.

特許文献１には排気弁の開閉をフォトインタラプタで検知した呼吸装置が開示されている。即ち、この呼吸装置は面体の前部に、排気時に開くと共に吸気時に閉じる排気弁と、排気時に閉じると共に吸気時に開く吸気弁とを設け、モータで駆動され、その通常作動時に前記吸気弁を通して外気を前記面体内に送り込むブロワーを設置した呼吸装置において、前記排気弁又は吸気弁の近傍に前記、排気弁又は吸気弁の位置を感知して、排気時又は吸気時に信号を発するフォトインタラプタを設置し、該センサからの信号により、吸気時には前記モータへ通常作動するよう電力供給されると共に、排気時にはモータへの電力供給が停止或いは減少されることを特徴とする呼吸装置が開示されている。
特許３７２６８８６号公報 Patent Document 1 discloses a breathing apparatus that detects opening / closing of an exhaust valve with a photo interrupter. That is, this breathing apparatus is provided with an exhaust valve that opens at the time of exhaust and closes at the time of intake and an intake valve that closes at the time of exhaust and opens at the time of intake and is driven by a motor, and through the intake valve during normal operation, In the breathing apparatus in which a blower for sending the gas into the face is installed, a photo interrupter that senses the position of the exhaust valve or the intake valve and generates a signal at the time of exhaust or intake is installed in the vicinity of the exhaust valve or the intake valve. According to a signal from the sensor, a breathing apparatus is disclosed in which power is supplied to the motor so as to normally operate during inspiration and power supply to the motor is stopped or reduced during exhaust.
Japanese Patent No. 3726886

しかし、フォトインタラプタを用いた呼吸装置では、フォトインタラプタの発光面、受光面及吸気弁または排気弁の表面（反射面）の汚れにより、ファンの動作不良が起こる可能性がある。また、経年劣化によるセンサの感度低下が起こり、同様の不具合が起こる可能性がある。
上述の不具合の原因となる塵、埃、油等が大量に存在している環境で使用する製品は、容易に故障しないような対策が必要である。
なお、汚れによる故障は、使用前後の点検、メンテナンスを行うことである程度は改善が可能であるが、使用者の呼吸保護を目的とした製品であるから、故障は好ましくない。 However, in a respiratory apparatus using a photo interrupter, a malfunction of the fan may occur due to contamination of the light emitting surface, light receiving surface, and intake valve or exhaust valve surface (reflection surface) of the photo interrupter. In addition, the sensitivity of the sensor may decrease due to aging, and the same malfunction may occur.
A product that is used in an environment where a large amount of dust, dust, oil, or the like that causes the above-described problems needs to be taken so that it does not easily fail.
In addition, the failure due to dirt can be improved to some extent by performing inspection and maintenance before and after use, but the failure is not preferable because it is a product aimed at protecting the user's breathing.

本発明は故障を可及的に減少させたファン付き呼吸用保護具について種々検討した結果、本発明を完成させたもので、本発明の目的は塵、埃、油等の汚れによる誤作動の少ない、呼吸に合わせた空気の供給制御を行う電動ファン付き呼吸用保護具を提供することである。   The present invention has been completed as a result of various investigations on a respirator with a fan that reduces failure as much as possible, and the object of the present invention is to prevent malfunction caused by dirt such as dust, dust, and oil. An object of the present invention is to provide a respiratory protective device with an electric fan that controls the supply of air in accordance with breathing.

本発明の要旨は、電動ファン付き呼吸用保護具において、排気弁又は吸気弁の一部に磁石を設け、排気弁又は吸気弁の開閉をホール素子で検出し、呼吸に合わせた空気の供給制御を行うことを特徴とするホール素子を用いた電動ファン付き呼吸用保護具である。   The gist of the present invention is that, in a respiratory protective device with an electric fan, a magnet is provided in a part of the exhaust valve or the intake valve, the opening / closing of the exhaust valve or the intake valve is detected by a Hall element, and the air supply control in accordance with the respiration This is a respiratory protective device with an electric fan using a Hall element.

本発明においては電動ファン付き呼吸用保護具の排気弁又は吸気弁の開閉に、磁気センサーであるホール素子（ホールセンサー）を用いたものであって、これによってフォトインタラプタに比して塵、埃、油等の汚れによる誤作動の少ない電動ファン付き呼吸用保護具を提供することができたのである。   In the present invention, a hall element (hall sensor) that is a magnetic sensor is used to open and close an exhaust valve or an intake valve of a respiratory protective device with an electric fan. Thus, it was possible to provide a respiratory protective device with an electric fan that is less likely to malfunction due to dirt such as oil.

本発明における電動ファン付き呼吸用保護具とは全面形もしくは半面形の接顔面体に排気弁と吸気弁とを有し、電動ファンによって装着者の呼吸に合わせて空気を供給する呼吸保護具であって、本発明ではホール効果を利用したホール素子を有するホールセンサーをもって空気の供給制御を行うものである。即ち、ホール素子は、磁気を検出するのでフォトインタラプタに比べて、塵、埃、油等の汚れに強いことが特徴である。また、非接触で検出するため、機械式のリミットスイッチに比べて耐久性が高いので、呼吸用保護具を使用するような環境では有効なセンサーと言える。
本発明において、ホール素子の設置場所としては、従来製品のように排気弁（または吸気弁）でもよいし、専用の呼吸を検知するための部品を設けてもよい。 The respiratory protective device with an electric fan in the present invention is a respiratory protective device having an exhaust valve and an intake valve on a full face or half face face body and supplying air in accordance with the breathing of the wearer by the electric fan. In the present invention, air supply control is performed using a Hall sensor having a Hall element utilizing the Hall effect. That is, the Hall element is characterized by being resistant to dirt such as dust, dust, oil, etc., as compared with a photo interrupter because it detects magnetism. In addition, since it is detected without contact, it is more durable than a mechanical limit switch, so it can be said that it is an effective sensor in an environment where a respirator is used.
In the present invention, the installation location of the Hall element may be an exhaust valve (or an intake valve) as in a conventional product, or a dedicated component for detecting breathing may be provided.

本発明の実施例として図面を持って説明する。
図１は本発明にかかる電動ファン付き呼吸用保護具の構造図を示すものである。図１において、接顔体１には吸気弁座２と排気弁座８とが設けられている。ファンモーターカバー３内にはファンモーター５が取り付けられている。吸気時にはファンモーター５が作動すると共に吸気弁４が開きろ過材６を介して清浄な空気が送気される。
また、排気弁座８には排気弁９が排気時には開くと共に吸気時には閉じるように取り付けられている。排気弁９の任意の個所に磁石１０が設けられていると共にこの磁石１０に対向する位置の排気弁カバー７にホール素子１１が取り付けられている。
呼吸による排気弁の動作を図２、図３に示す。
図２は、装着者が吸気しているときの排気弁９の状態であり、ホール素子と磁石は最大限に離れている。このとき、ホール素子が検知する磁束密度は小さいため、ホール素子の出力端子の電位差も小さくなる。電気回路は、ファンモーターが通常の送風を行うように制御する。
図３は、排気のときの排気弁９の状態であり、吸気時に比べてホール素子１１と磁石１０は近い位置関係になる。このとき、ホール素子が検知する磁束密度は大きくなるため、ホール素子の出力端子の電位差も大きくなる。電気回路は、ファンモーターの送風が、図２よりも減少する、或いは停止するように制御する。 An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a structural view of a respiratory protective device with an electric fan according to the present invention. In FIG. 1, the face contact body 1 is provided with an intake valve seat 2 and an exhaust valve seat 8. A fan motor 5 is attached in the fan motor cover 3. At the time of intake, the fan motor 5 operates and the intake valve 4 opens to supply clean air through the filter medium 6.
An exhaust valve 9 is attached to the exhaust valve seat 8 so that it opens when exhausting and closes when intake. A magnet 10 is provided at an arbitrary position of the exhaust valve 9, and a hall element 11 is attached to the exhaust valve cover 7 at a position facing the magnet 10.
The operation of the exhaust valve by breathing is shown in FIGS.
FIG. 2 shows the state of the exhaust valve 9 when the wearer is inhaling, and the Hall element and the magnet are separated as much as possible. At this time, since the magnetic flux density detected by the Hall element is small, the potential difference at the output terminal of the Hall element is also small. The electric circuit controls the fan motor to perform normal air blowing.
FIG. 3 shows the state of the exhaust valve 9 at the time of exhaust, and the Hall element 11 and the magnet 10 are closer to each other than at the time of intake. At this time, since the magnetic flux density detected by the Hall element increases, the potential difference at the output terminal of the Hall element also increases. The electric circuit controls the fan motor air flow to be reduced or stopped as compared with FIG.

なお、微妙な送風の制御を行う場合には、ホール素子に対し、磁石の移動量に比例した磁束密度が得られるようにホールセンサーを設計することが望ましい。
図４に他の実施例を示す。ホール素子に対して垂直方向に移動する硬い樹脂等で出来た弁軸１３に排気弁１４を取り付けて、適当な弾力を持ったスプリング等１２により排気弁１４の開閉を行う構造である。排気弁の動きを図５、図６に示す。ファンモーターの動作は、上述と同じであるので省略する。 In addition, when performing delicate ventilation control, it is desirable to design the Hall sensor so that a magnetic flux density proportional to the moving amount of the magnet can be obtained with respect to the Hall element.
FIG. 4 shows another embodiment. An exhaust valve 14 is attached to a valve shaft 13 made of a hard resin or the like that moves in a direction perpendicular to the Hall element, and the exhaust valve 14 is opened and closed by a spring 12 having an appropriate elasticity. The movement of the exhaust valve is shown in FIGS. Since the operation of the fan motor is the same as described above, a description thereof will be omitted.

以上述べたように、本発明ではホール素子を使用して外気を送入するようにしたので、フォトインタラプタに比べて、塵、埃、油等の汚れに強く、誤作動の少ない電動ファン付き呼吸用保護具を提供することができる。   As described above, in the present invention, since the outside air is sent in using the Hall element, it is more resistant to dirt, dust, oil, and other dirt than a photo interrupter and has a low malfunction due to an electric fan. Protective equipment can be provided.

本発明の電動ファン付き呼吸用保護具の断面図Sectional drawing of the respirator with an electric fan of the present invention 図１の電動ファン付き呼吸用保護具の吸気時における排気弁の状態を示す断面図Sectional drawing which shows the state of the exhaust valve at the time of inhalation of the respirator with an electric fan of FIG. 図１の電動ファン付き呼吸用保護具の排気時における排気弁の状態を示す断面図Sectional drawing which shows the state of the exhaust valve at the time of exhaustion of the respirator with an electric fan of FIG. 本発明の他の電動ファン付き呼吸用保護具の断面図Sectional drawing of the respirator with other electric fans of this invention 図４の電動ファン付き呼吸用保護具の吸気時における排気弁の状態を示す断面図Sectional drawing which shows the state of the exhaust valve at the time of inhalation of the respirator with an electric fan of FIG. 図４の電動ファン付き呼吸用保護具の排気時における排気弁の状態を示す断面図Sectional drawing which shows the state of the exhaust valve at the time of exhaustion of the respirator with an electric fan of FIG.

符号の説明Explanation of symbols

１ 接顔体 ２ 吸気弁座 ３ ファンモーターカバー
４ 吸気弁 ５ ファンモーター ６ ろ過材
７ 排気弁カバー ８ 排気弁座 ９ 排気弁
１０ 磁石 １１ ホール素子 １２ スプリング
１３ 弁軸 １４ 排気弁 DESCRIPTION OF SYMBOLS 1 Face body 2 Intake valve seat 3 Fan motor cover 4 Intake valve 5 Fan motor 6 Filter material 7 Exhaust valve cover 8 Exhaust valve seat 9 Exhaust valve 10 Magnet 11 Hall element 12 Spring 13 Valve shaft 14 Exhaust valve

Claims (1)

電動ファン付き呼吸用保護具において、排気弁又は吸気弁の一部に磁石を設け、排気弁又は吸気弁の開閉をホール素子で検出し、呼吸に合わせた空気の供給制御を行うことを特徴とするホール素子を用いた電動ファン付き呼吸用保護具。 In the respiratory protective device with an electric fan, a magnet is provided in a part of the exhaust valve or the intake valve, and the opening or closing of the exhaust valve or the intake valve is detected by a hall element, and the air supply control in accordance with the respiration is performed. Respirator with an electric fan using a hall element that performs.
JP2007147779A 2007-06-04 2007-06-04 Respiratory protection device with electric fan by use of hole element Pending JP2008295922A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015056464A1 (en) * 2013-10-17 2015-04-23 株式会社重松製作所 Breathing apparatus
CN104759044A (en) * 2014-03-29 2015-07-08 史玉林 Anti-haze automatic air filtration mask
CN104971450A (en) * 2015-07-12 2015-10-14 苏州欣航微电子有限公司 Air filter mask
WO2017098329A1 (en) * 2015-12-07 2017-06-15 Christopher Dobbing Respirator mask management system
WO2019169637A1 (en) * 2018-03-09 2019-09-12 香港纺织及成衣研发中心有限公司 Microorganism inhalation reduction method, mask, and use and manufacturing method therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003010349A (en) * 2001-06-29 2003-01-14 Koken Ltd Respiration equipment
JP2008086644A (en) * 2006-10-04 2008-04-17 Koken Ltd Mask device with blower

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003010349A (en) * 2001-06-29 2003-01-14 Koken Ltd Respiration equipment
JP2008086644A (en) * 2006-10-04 2008-04-17 Koken Ltd Mask device with blower

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015056464A1 (en) * 2013-10-17 2015-04-23 株式会社重松製作所 Breathing apparatus
CN104759044A (en) * 2014-03-29 2015-07-08 史玉林 Anti-haze automatic air filtration mask
CN104971450A (en) * 2015-07-12 2015-10-14 苏州欣航微电子有限公司 Air filter mask
WO2017098329A1 (en) * 2015-12-07 2017-06-15 Christopher Dobbing Respirator mask management system
WO2019169637A1 (en) * 2018-03-09 2019-09-12 香港纺织及成衣研发中心有限公司 Microorganism inhalation reduction method, mask, and use and manufacturing method therefor

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