JP2009544897A - Pneumatic motor exhaust system with ice resistance and low noise - Google Patents

Pneumatic motor exhaust system with ice resistance and low noise Download PDF

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Publication number
JP2009544897A
JP2009544897A JP2009521982A JP2009521982A JP2009544897A JP 2009544897 A JP2009544897 A JP 2009544897A JP 2009521982 A JP2009521982 A JP 2009521982A JP 2009521982 A JP2009521982 A JP 2009521982A JP 2009544897 A JP2009544897 A JP 2009544897A
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JP
Japan
Prior art keywords
exhaust
manifold
muffler
pneumatic motor
exhaust system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2009521982A
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Japanese (ja)
Inventor
エム. バーレンス,デイヴィッド
エル. ボーク,マーク
シー. ホールマン,ジョン
ピー. ロス,ダニエル
ティー. ワインバーガー,マーク
Original Assignee
グラコ ミネソタ インコーポレーテッド
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Publication date
Priority to US82040506P priority Critical
Application filed by グラコ ミネソタ インコーポレーテッド filed Critical グラコ ミネソタ インコーポレーテッド
Priority to PCT/US2007/074324 priority patent/WO2008014322A2/en
Publication of JP2009544897A publication Critical patent/JP2009544897A/en
Application status is Pending legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B31/00Component parts, details, or accessories not provided for in, or of interest apart from, other groups
    • F01B31/02De-icing means for engines having icing phenomena
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/08Other arrangements or adaptations of exhaust conduits
    • F01N13/10Other arrangements or adaptations of exhaust conduits of exhaust manifolds

Abstract

The induction exhaust apparatus includes an exhaust manifold 16 and a muffler 22. In the present invention, warm outside air is drawn into the muffler 22. Heat from this external source is conducted through the finned manifold 16 and as a result melts ice that may form in the manifold 16 during the exhaust cycle. The exhaust manifold 16 is bolted to the air valve 14 side of the pneumatic motor, and functions to guide, mute and disperse the exhaust gas of the pneumatic motor using a deflector plate and a diffractive plate. An expansion chamber is provided in the manifold to guide gas from the air valve down to the center of the muffler 22.

Description

TECHNICAL FIELD This application claims the benefit of US application Ser. No. 60 / 820,405, filed Jul. 26, 2006.

BACKGROUND ART Reciprocating pneumatic motors are well suited for operating reciprocating piston pumps, but they sometimes are due to exhaust noise, tendency to accumulate ice in air valves, and / or rapid expansion of exhaust gases. I am troubled by the discharge passage. U.S. Pat. No. 4,921,408 is one attempt to improve operation, the contents of which are incorporated by reference.

US Pat. No. 4,921,408

DISCLOSURE OF THE INVENTION An induction exhaust system has an exhaust manifold and a muffler. In the present invention, warm outside air is drawn into the muffler. Heat from this external source is conducted through the finned manifold, resulting in melting ice that may form inside the manifold during the exhaust cycle.

  The exhaust manifold directs the flow of exhaust to the muffler, resulting in a high speed, narrow airflow and low pressure regions on either side of the flow due to the Bernoulli effect. This low pressure region creates a pressure differential that draws warm ambient air into the exhaust system. The more outside air that is drawn in, the more ice is lost. For this purpose, it is necessary to minimize the downstream exhaust pressure.

  However, minimizing downstream exhaust pressure can result in higher noise levels. To reduce noise, a reverberation chamber is added behind the muffler outlet, which allows the sound waves to disperse over time while minimizing back pressure. The reciprocating pneumatic motor has a short noise blast (15-50 msec.), And the reverberation chamber reduces the peak level and increases the noise interval. The reverberation chamber also has a capacitance function that minimizes downstream exhaust pressure.

  The exhaust manifold is bolted to the air valve side of the pneumatic motor and uses a plurality of components to guide, silence and distribute the exhaust gas of the pneumatic motor. The deflection plate disperses the initial blast as it exits the air valve and enters the exhaust manifold. The deflector partially deflects the port noise and slows down, spreading the strongly focused blast, thereby reducing noise and exhaust speed. The diffractive plate in the exhaust manifold diffracts and disperses the exhaust blast through a number of small holes rather than a hole with one larger cross section, again reducing noise and exhaust speed. An expansion chamber is provided in the manifold to guide the exhaust gas from the air valve down to the center of the muffler. The cross section of the muffler is also divided into an extension chamber and a nozzle, by which the exhaust blast is exhausted from the manifold through the diffraction plate and the nozzle after being expanded and dispersed.

  These and other objects and advantages of the present invention will become more fully apparent from the following description taken in conjunction with the accompanying drawings. In this figure, like reference numerals, like or similar parts are referred to throughout the several views.

Brief Description of Drawings
FIG. 1 shows a cross section of a pneumatic motor, in particular its exhaust system.

BEST MODE FOR CARRYING OUT THE INVENTION A pneumatic motor 10 of the present invention has a piston 12 and an air valve 14. The induction exhaust apparatus includes an exhaust manifold 16 and a muffler 22. In the present invention, warm outside air is drawn into the muffler 22. The heat from this external source is conducted through the finned manifold 16 and consequently melts ice that may be formed in the manifold 16 during the exhaust cycle.

  The exhaust manifold 16 directs the flow of exhaust to the muffler 22 and, as a result, generates a high speed, narrow airflow and generates low pressure regions on both sides of the flow due to the Bernoulli effect. This low pressure region creates a pressure differential that draws warm ambient air into the exhaust system. The more outside air that is drawn in, the more ice is lost. For this purpose, it is necessary to minimize the downstream exhaust pressure.

  However, minimizing downstream exhaust pressure can result in higher noise levels. In order to reduce noise, a reverberation chamber 26 is added behind the outlet of the muffler 22 so that the sound waves can be dispersed over time while minimizing back pressure. The reciprocating pneumatic motor has a short noise blast (15-50 msec.), And the reverberation chamber reduces the peak level and increases the noise interval. The reverberation chamber also has a capacitance function that minimizes downstream exhaust pressure.

  The exhaust manifold 16 is bolted to the pneumatic valve 14 side of the pneumatic motor and uses a plurality of components to guide, muffle and distribute the exhaust gas of the pneumatic motor. The deflection plate disperses the initial blast as it exits the air valve and enters the exhaust manifold. The deflector partially deflects the port noise and slows down, broadening the strongly focused blast, thereby reducing noise and exhaust speed. The diffractive plate in the exhaust manifold diffracts and disperses the exhaust blast through a number of small holes rather than a hole with one larger cross section, again reducing noise and exhaust speed. An expansion chamber is provided in the manifold to guide the exhaust gas from the air valve down to the center of the muffler. The cross section of the muffler is also divided into an extension chamber and a nozzle, which allows the exhaust blast to expand and disperse before exiting the manifold through the diffractive plate and nozzle.

  Various modifications and improvements are intended to be made to the exhaust system without departing from the spirit and scope of the invention as defined in the following claims.

Claims (7)

  1. An exhaust device for use with a reciprocating pneumatic motor having an air valve,
    A manifold with fins,
    Muffler,
    An exhaust having an air passage for drawing warm outside air into the muffler, wherein heat from the warm outside air is conducted through the finned manifold to melt ice that may be formed inside the manifold during an exhaust cycle. apparatus.
  2.   The manifold directs the exhaust flow to the muffler, resulting in a high-speed narrow airflow, and the Bernoulli effect creates low-pressure areas on both sides of the airflow, which draws the warm outside air into the exhaust system The exhaust device according to claim 1, wherein a pressure difference is generated.
  3.   The exhaust system according to claim 1, further comprising a reverberation chamber behind the muffler that can disperse sound waves with time while minimizing back pressure.
  4.   The exhaust system according to claim 1, wherein the manifold is fixed to the air valve side of the pneumatic motor with a bolt and serves to guide, mute, and disperse the exhaust gas of the pneumatic motor.
  5.   The exhaust system of claim 1, further comprising a deflection plate for dispersing the exhaust blast as initial exhaust blast exits the air valve and enters the manifold.
  6.   The exhaust system of claim 1, further comprising a diffractive plate having a number of small holes in the exhaust manifold to diffract and disperse the exhaust blast to reduce noise and exhaust speed.
  7.   The exhaust system according to claim 1, further comprising an expansion chamber in the manifold for guiding exhaust gas from the air valve to a lower center of the muffler.
JP2009521982A 2006-07-26 2007-07-25 Pneumatic motor exhaust system with ice resistance and low noise Pending JP2009544897A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US82040506P true 2006-07-26 2006-07-26
PCT/US2007/074324 WO2008014322A2 (en) 2006-07-26 2007-07-25 Icing resistant reduced noise air motor exhaust

Publications (1)

Publication Number Publication Date
JP2009544897A true JP2009544897A (en) 2009-12-17

Family

ID=38982295

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009521982A Pending JP2009544897A (en) 2006-07-26 2007-07-25 Pneumatic motor exhaust system with ice resistance and low noise

Country Status (11)

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US (1) US20090288403A1 (en)
EP (1) EP2049353A4 (en)
JP (1) JP2009544897A (en)
KR (1) KR20090033277A (en)
CN (1) CN101495339A (en)
AU (1) AU2007279295A1 (en)
BR (1) BRPI0714951A2 (en)
MX (1) MX2009000904A (en)
RU (1) RU2009106652A (en)
TW (1) TW200830674A (en)
WO (1) WO2008014322A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107262308A (en) 2011-10-27 2017-10-20 固瑞克明尼苏达有限公司 Sprayer fluid feed system with collapsible bushing pipe
MX341016B (en) 2011-10-27 2016-08-04 Graco Minnesota Inc Melter.
FR2990379B1 (en) 2012-05-10 2014-04-25 Saint Gobain Glazing lighting with deflector incorporated
US9796492B2 (en) 2015-03-12 2017-10-24 Graco Minnesota Inc. Manual check valve for priming a collapsible fluid liner for a sprayer
WO2019140175A1 (en) * 2018-01-15 2019-07-18 Graco Minnesota Inc. Compressed air driven motor

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US3789954A (en) * 1973-06-19 1974-02-05 Graco Inc Air motor noise suppressor
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FR2487241B1 (en) * 1980-07-25 1983-11-04 Maco Meudon Sa
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JPH0744766Y2 (en) * 1988-11-10 1995-10-11 日東工器株式会社 Air compression device
US4921408A (en) 1988-11-28 1990-05-01 Graco Inc. Non-icing quiet air-operated pump
JPH02245401A (en) * 1989-03-17 1990-10-01 Nippon Gurei Kk Antifreezing device for air motor
JP2569496Y2 (en) * 1991-06-07 1998-04-22 日東工器株式会社 Diaphragm pump
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GB9315736D0 (en) 1993-07-29 1993-09-15 Binks Bullows Ltd Motor
US5363739A (en) * 1993-10-12 1994-11-15 Graco Inc. Reduced icing low friction air valve
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US5567127A (en) * 1994-11-09 1996-10-22 Wentz; Kennith W. Low noise air blower
JP3029092B2 (en) * 1996-05-21 2000-04-04 羊太郎 多賀 Silencer in impact wrench
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JPS566011A (en) * 1979-06-27 1981-01-22 Vortec Corp Vortex tube assembly

Also Published As

Publication number Publication date
CN101495339A (en) 2009-07-29
RU2009106652A (en) 2010-09-10
MX2009000904A (en) 2009-02-04
TW200830674A (en) 2008-07-16
US20090288403A1 (en) 2009-11-26
WO2008014322A2 (en) 2008-01-31
KR20090033277A (en) 2009-04-01
WO2008014322A3 (en) 2008-07-31
EP2049353A4 (en) 2009-11-25
BRPI0714951A2 (en) 2013-05-21
EP2049353A2 (en) 2009-04-22
AU2007279295A1 (en) 2008-01-31

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