EP2392823A2 - Silencieux d'évacuation de liquides compressible - Google Patents

Silencieux d'évacuation de liquides compressible Download PDF

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Publication number
EP2392823A2
EP2392823A2 EP20110168343 EP11168343A EP2392823A2 EP 2392823 A2 EP2392823 A2 EP 2392823A2 EP 20110168343 EP20110168343 EP 20110168343 EP 11168343 A EP11168343 A EP 11168343A EP 2392823 A2 EP2392823 A2 EP 2392823A2
Authority
EP
European Patent Office
Prior art keywords
compressor
opening
air
storage tank
muffler
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.)
Withdrawn
Application number
EP20110168343
Other languages
German (de)
English (en)
Other versions
EP2392823A3 (fr
Inventor
Mark W. Wood
Gary D. White
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Black and Decker Inc
Original Assignee
Black and Decker Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Black and Decker Inc filed Critical Black and Decker Inc
Publication of EP2392823A2 publication Critical patent/EP2392823A2/fr
Publication of EP2392823A3 publication Critical patent/EP2392823A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/06—Mobile combinations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86035—Combined with fluid receiver
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49398—Muffler, manifold or exhaust pipe making

Definitions

  • the present invention relates in general to the field of air compressors and particularly to an apparatus and method for reducing the noise of compressed air entering into an air storage tank in a compressor assembly.
  • a compressor assembly normally provides a source of compressible fluid which is temporarily stored in a pressurized fluid tank.
  • an electric motor or a combustion engine is connected to a compressor unit to activate the compressor.
  • the compressor unit typically includes a piston assembly, or compressor pump, which compresses the fluid and forces it into the fluid pressure tank for temporary storage.
  • an air compressor assembly provides a source of pressurized air to an air storage tank.
  • Many portable air compressors include a compressor mounted to an air storage tank. The compressor compresses air which is then stored in the air storage tank. The compressor unit compresses air from the atmosphere.
  • the pressurized air in the air storage tank can be used for operating air powered tools such as nailing tools, socket driving tools, material shaping tools, sanding tools, spray painting tools, inflation chucks, and inflating tires and the like.
  • This application relates to an apparatus and method for reducing the noise of a compressed fluid, such as air entering a storage tank.
  • the apparatus and method disclosed herein allow users to effectively reduce the noise and vibration of the air storage tank caused by the air entering the tank.
  • an air compressor assembly includes an air compressor and an air storage tank suitable for storing pressurized air and having an intake port in an upper surface of the air storage tank.
  • a noise reduction member is disposed between the compressor and the air storage tank and is capable of reducing noise generated by the delivery of pressurized air from the compressor to the air storage tank. The noise reduction member captures the high velocity bursts of pressurized air and discharges the air at a slower velocity and thereby more continuous flow.
  • Advantages include at least the following: less vibration of the tank caused by the pulses of air coming out of the compressor, resulting in less noise.
  • the pulsing of air is caused by the stop-and-go push of air from the compressor. Reducing air storage tank vibration and noise, makes the operation of the compressor more comfortable and a more positive experience for the user. In addition, environmental noise produced by the air tank is reduced.
  • the air compressor assembly 10 includes a compressor 12 mounted to a compressed air storage tank 14, a motor (not shown) and an air discharge tube 11.
  • the air storage tank 14 provides a tank or receiver for storing a fluid, such as air, under pressure.
  • a discharge port (not shown) is provided in the air storage tank 14 to which a pressure manifold or pipe is fitted allowing compressed air to be drawn from the tank 14 for powering air powered tools such as nailing tools, socket driving tools, material shaping tools, sanding tools, spray painting tools, and tire inflation chucks.
  • air powered tools such as nailing tools, socket driving tools, material shaping tools, sanding tools, spray painting tools, and tire inflation chucks.
  • compressor assemblies have storage tanks with walls that are sufficiently flexible to transmit noise.
  • Such compressor assemblies including vertical tank compressors, horizontal tank compressors, twin tank compressors, pancake compressors and the like for pressurizing air from a first pressure to a second higher pressure, may implement the principles of the present invention.
  • the compressed air storage tank 14 of the air compressor assembly 10 may be comprised of a flattened oval or "pancake" style tank.
  • the air storage tank may also take a variety of shapes and positions without departing from the spirit and scope of the present invention.
  • a pressure switch assembly inside of the compressor is mounted to the pressure manifold 13 for regulating pressure within the air storage tank 14 by alternately starting and stopping the compressor 12 to periodically replenish the supply of air in the tank 14.
  • the pressure switch assembly starts the compressor 12 to re-pressurize the tank 14.
  • the compressed air generated by the compressor 12 passes through the air discharge tube 11 into the air storage tank 14.
  • the pressure switch assembly stops the compressor 12 to prevent overpressurization of the tank 14. In this manner, the pressure of the compressed air in the compressed air storage tank 14 is maintained within a range generally suitable for powering one or more air powered tools.
  • rotation of the motor activates the compressor 12 thereby initiating a supply of compressed air to an intake port 18 located on the storage tank 14.
  • a noise reduction member of the present invention reduces the noise of pressurized air entering the air tank.
  • Figure 2 shows a noise reduction member in the form of a compressible fluid discharge muffler 20 comprising a tubular body 22 having an open first end 15 for receiving a compressed fluid and a restricting second end 17 for discharging the compressed fluid.
  • the compressible fluid discharge muffler 20 is connected to the intake port 18 of the air storage tank 14.
  • the intake port 18 receives a fluid, such as air, that is compressed by the compressor 12.
  • the muffler 20 serves to reduce the vibration of pressurized fluid, such as air entering the storage tank, and thereby the noise caused by the vibration.
  • the tubular body 22 of the compressible fluid discharge muffler 20 has a cavity 23 defined by an inlet 24 at a first end and an outlet 26 at a second end opposing the first end.
  • the outlet 26 of the muffler 20 discharges pressurized air into the tank 14.
  • the inlet 24 of the tubular body 22 in Figure 2 has a greater diameter than the outlet 26, thereby creating a restricted flow path for air being delivered from the compressor 12 to the interior of the air storage tank 14. As the outlet 26 is smaller than the inlet, the outlet acts as a restricting means downstream of the inlet 24.
  • the volume and outlet of the tubular body 22 forming the muffler 20 are sized to reduce the high velocity air flow pulsations from the compressor 12 into the air storage tank 14 that result in reduced tank wall vibration and tank noise.
  • the second end of the tubular body 22 can have any shape including, but not limited to, the rounded U-shape shown in the figures.
  • the second end of the tubular body can be flat as shown in Figure 4 .
  • the muffler outlet 26 can also have sidewalls 27 that are parallel to the direction of fluid flow.
  • Figure 2 illustrates a single aperture forming the outlet 26 at the second end of the tubular body, the outlet end of the tubular body 22 can have a plurality of apertures.
  • the muffler 20 can be made from any material including, but not limited to, aluminum, brass, and plated steel, or be plastic molded.
  • the muffler is illustrated as tubular, the muffler can be any shape, including spherical.
  • the muffler 20 can also accommodate a non-return or check valve 30 in the first end thereof.
  • the check valve can be in the form of a body having an inlet portion for the entrance of fluid and an outlet portion for the discharge of the fluid.
  • the check valve 30 inhibits air from returning to the compressor 12 from the air storage tank 14.
  • the check valve includes a seat 29 on the body and a disk 28 that is movable toward the seat to contact the seat and thereby close the valve, and away from the seat to open the valve.
  • the disk 28 is biased in a direction toward the seat 29 by a spring 32 to close the valve.
  • the check valve 30 inlet portion disposed within the air discharge tube 11 connecting the compressor 12 and the air storage tank 14.
  • the check valve 30 can be at least partially inserted into the inlet 24 in the first end of the tubular body 22. An outlet portion of the check valve 30 is disposed within the inlet 24 of the tubular body 22.
  • the muffler 20 creates an enclosed air volume around the portion of the check valve 30 that is inserted into the air storage tank 14.
  • the muffler 20 can be mounted to the air storage tank 14 through the intake port 18 as follows.
  • a weld flange 34 having a threaded inner surface 35 can be secured to the air storage tank 14 by a weld bead 36.
  • a check valve 30 having a threaded outer surface can be threaded into the weld flange 34.
  • the muffler 20 can be connected to the check valve 30 by press-fitting or crimping a flanged upper end to the surface of the check valve.
  • Other connection methods of the muffler to a check valve include brazing and adhering with an epoxy.
  • the weld flange 34, 54 can be forged from steel and the weld bead 36, 56 can be made from a steel alloy or any compatible material used to weld a flange to an air storage tank.
  • the weld flange 34, 54 and weld bead 36, 56 can be made from any combination of compatible materials including, but not limited to aluminum, copper, brass, plastic and steel.
  • the weld flange and weld bead can be joined by any compatible joining process.
  • the muffler 40 can be welded directly to the air storage tank 14.
  • the muffler 40 includes a tubular body 42 having an inlet 44 at a first end and an outlet 46 at a second end opposing the first end.
  • the inlet 44 has a greater diameter than the outlet 46.
  • the muffler 40 is integrally connected to the air storage tank 14.
  • the tubular body 42 is welded with weld bead 56 at the intake port 18 on an inner wall of the air storage tank 14.
  • the outlet 46 of muffler 40 restricts the flow of air being delivered from the compressor 12 to the air storage tank 14.
  • the upper outer surface of the muffler can be a threaded surface that is threaded onto an inner threaded surface of the weld flange.
  • the upper inner surface of the muffler can be a threaded surface that is threaded onto an outer threaded surface of the weld flange 34.
  • the outlet 46 in the second end of the muffler 40 can have a flared opening 52 that extends beyond the bottom surface of the tubular body of the muffler.
  • the flared opening 52 can have any configuration, such as, for example, convex inner sides as shown in Figure 3 .
  • the second end of the muffler 40 can be formed by piercing, drilling, or any suitable method for forming an aperture in the bottom of a tube.
  • the muffler can be disposed along the path between the outlet of the compressor and the inlet to the air storage tank.
  • the muffler 20 can be formed so that the restriction portion is downstream from the inlet of the tubular body 22 and upstream of the pressurized air inlet into the air storage tank 14.
  • the muffler 20 can be fully disposed within the air storage tank 14.
  • the muffler 520 can be disposed within the head 513 of the compressor 512.
  • the muffler 520 has a restricting outlet 526 at the second end of the tubular body 522.
  • the restricting outlet 526 is disposed upstream of or within the inlet of the air discharge tube 511.
  • the air discharge tube 511 carries the compressed air to the air storage tank 514.
  • Figure 6 illustrates that the muffler 620 can be completely disposed within the air discharge tube 611 connecting the compressor 612 and air storage tank 614.
  • the muffler 620 is outside of both the air storage tank 614 and the head 613 of the compressor 612 and the restricting outlet 626 is immediately upstream of the check valve 630.
  • the check valve 830 is located downstream from the muffler cavity 823 of the muffler 820.
  • the check valve has an inlet 832 and channel 834 in line with the fluid flow.
  • the inlet 832 and channel 834 that are sized to reduce the speed of the high velocity air entering the air storage tank 814.
  • Pressurized air being delivered from the compressor 812 passes through the discharge tube 811 to the muffler 820 enters and is discharged from the muffler/check valve combination, through a restricting outlet 826 in the check valve 830. The pressurized air then enters the air storage tank 814.
  • the muffler 920 serves as the air discharge tube for pressurized air being delivered from the compressor 912 to the air storage tank 914.
  • the muffler cavity 923 extends from the compressor to the check valve 930 serving as the restricting member. Pressurized air is discharged from the muffler/check valve combination through the outlet 926 and enters the air storage tank 914.
  • More than one muffler of the present invention can be used in series along the path between the compressor and the air storage tank.
  • the muffler can also protect the check valve from corrosion caused by condensate in the air storage tank. Tilting of the compressor, for example, during movement from one location to another location, could allow water or other condensate to enter into air compressor.
  • the check valve serves to check the flow of fluid from the air storage tank to the compressor. However, if the check valve comes in contact with water or other liquid condensate, over time, the check valve will tend to corrode. In the above-described embodiments shown in Figures 1-4 , the length of the cavity 23 in the tubular body 22 of the muffler 2, restricts the liquid condensate from entering the check valve 30 from the air storage tank 14.
  • the mufflers are illustrated as being inserted through a top or upper surface of the air storage tank.
  • the mufflers can also be inserted into the air storage tank through a bottom or lower surface of the tank. In such an arrangement, the mufflers can be inserted above the high water or condensate line.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Exhaust Silencers (AREA)
  • Pipe Accessories (AREA)
EP11168343.9A 2010-06-01 2011-06-01 Silencieux d'évacuation de liquides compressible Withdrawn EP2392823A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US35022610P 2010-06-01 2010-06-01
US13/117,560 US20110290354A1 (en) 2010-06-01 2011-05-27 Compressible Fluid Discharge Muffler

Publications (2)

Publication Number Publication Date
EP2392823A2 true EP2392823A2 (fr) 2011-12-07
EP2392823A3 EP2392823A3 (fr) 2017-03-08

Family

ID=45066024

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168343.9A Withdrawn EP2392823A3 (fr) 2010-06-01 2011-06-01 Silencieux d'évacuation de liquides compressible

Country Status (4)

Country Link
US (1) US20110290354A1 (fr)
EP (1) EP2392823A3 (fr)
CN (1) CN102312819B (fr)
CA (1) CA2741264A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11204022B2 (en) 2018-08-14 2021-12-21 Milwaukee Electric Tool Corporation Air compressor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101927381B1 (ko) * 2017-10-12 2018-12-07 뉴모텍(주) 소형 공기 압축기를 포함한 공작기계 시스템
IT202100018482A1 (it) * 2021-07-13 2023-01-13 Fna S P A Silenziatore e serbatoio d'aria per un gruppo compressore d'aria, in particolare un compressore d'aria a pistoni
JP2023023378A (ja) * 2021-08-05 2023-02-16 株式会社マキタ エアコンプレッサ

Family Cites Families (12)

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US1909511A (en) * 1929-11-01 1933-05-16 Gen Motors Res Corp Muffler
US2136098A (en) * 1937-07-28 1938-11-08 Kellogg Compressor And Mfg Cor Air compressing apparatus
US2962110A (en) * 1957-08-09 1960-11-29 Gen Motors Corp Surge muffler for air storage tank
US2964120A (en) * 1958-12-19 1960-12-13 Gen Motors Corp High pressure storage tank inlet fiting and muffler assembly
US4557257A (en) * 1983-07-21 1985-12-10 Fernandez Jose M Pneumatic walking brace and operating system
CN85201134U (zh) * 1985-04-30 1986-04-09 西安交通大学 一种空气压缩机的减噪排气装置
EP0386740B1 (fr) * 1989-03-10 1994-06-01 Kabushiki Kaisha Neriki Assemblage à robinet avec clapet de non-retour pour bouteille à gaz
US5133647A (en) * 1989-07-07 1992-07-28 Ultra-Precision Manufacturing, Ltd. Pulse damper
AU691270B2 (en) * 1994-06-24 1998-05-14 Kabushiki Kaisha Neriki Valve assembly for gas cylinder
US6102679A (en) * 1998-03-12 2000-08-15 Brown; Gerald E. Air compressor
KR100408245B1 (ko) * 2001-11-05 2003-12-01 주식회사 엘지이아이 압축기의 진동 소음 저감구조
CN2667195Y (zh) * 2003-07-16 2004-12-29 王健斌 空压机储气罐单向阀消音装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11204022B2 (en) 2018-08-14 2021-12-21 Milwaukee Electric Tool Corporation Air compressor
US12060872B2 (en) 2018-08-14 2024-08-13 Milwaukee Electric Tool Corporation Air compressor

Also Published As

Publication number Publication date
CN102312819A (zh) 2012-01-11
CA2741264A1 (fr) 2011-12-01
US20110290354A1 (en) 2011-12-01
EP2392823A3 (fr) 2017-03-08
CN102312819B (zh) 2017-03-01

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