US20130126025A1 - Air compressors - Google Patents

Air compressors Download PDF

Info

Publication number
US20130126025A1
US20130126025A1 US13/672,251 US201213672251A US2013126025A1 US 20130126025 A1 US20130126025 A1 US 20130126025A1 US 201213672251 A US201213672251 A US 201213672251A US 2013126025 A1 US2013126025 A1 US 2013126025A1
Authority
US
United States
Prior art keywords
air
unit
battery
compressor
external tank
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.)
Abandoned
Application number
US13/672,251
Other languages
English (en)
Inventor
Noriyuki Nishido
Munetoshi Goto
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.)
Makita Corp
Original Assignee
Makita Corp
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 Makita Corp filed Critical Makita Corp
Assigned to MAKITA CORPORATION reassignment MAKITA CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GOTO, MUNETOSHI, NISHIDO, NORIYUKI
Publication of US20130126025A1 publication Critical patent/US20130126025A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • 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
    • 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

Definitions

  • Embodiments of the present invention relate to air compressors that may be used, for example, for supplying compressed air to pneumatic tools, such as nailers and tackers that can be driven by compressed air.
  • simplified air compressors There have been provided simplified air compressors. Simplified air compressors may have smaller discharge outputs than stationary large-sized air compressors. However, because simplified air compressors are light and small and can be easily carried about, they can be conveniently used when performing simple and light duty work involving pneumatic tools.
  • U.S. Pat. No. 7,140,845 and JP-A-2-108878 teach techniques relating to simplified air compressors that have batteries (DC power sources) as power sources.
  • the simplified air compressors disclosed in the above documents typically have an electric motor and a compressing device that are disposed within a resin case.
  • the compressing device may convert the rotational output of the electric motor into a reciprocating movement of a piston within a cylinder for discharging compressed air.
  • the compressed air discharged from the compressing device may be directly supplied to a pneumatic tool. Therefore, the air compressor can be lightweight because there is no need for a storage tank for storing the compressed air.
  • the user may carry the simplified air compressor on his or her shoulder or back. Therefore, it is possible to supply the compressed air to a pneumatic tool, such as a nailer, at a place, such as a building site, where no electric outlet is available. Hence, there would be no restriction with respect to the place for use. In this way, it is possible to efficiently perform light duty works, such in the repairing of items or structures.
  • JP-A-2006-220202 teaches a technique of providing an external auxiliary tank at an AC powered air compressor that is relatively small in size but is of a stationary type having an internal storage tank. By providing the external auxiliary tank, it may be possible to stably supply a larger output of compressed air.
  • the air compressors disclosed in the above documents still require improvements. For example, if an external auxiliary tank is connected to the battery driven air compressor for supplying a larger output of compressed air, a larger electric power is necessary to be supplied by the battery. In this case, it may be possible to cause lack of residual power in the battery. For this reason, it is necessary to frequently recharge or replace the battery. As a result, it is necessary to frequently stop the work, leading to low productivity.
  • an air compressor may include a compressor unit and an external tank unit connectible with the compressor unit.
  • the external tank unit may include an external tank and a battery,
  • the battery may supply an electric power to the compressor unit.
  • FIG. 1 is a diagram showing the configuration of an air compressor according to a first embodiment, in which a pneumatic tool is connected to an external tank unit;
  • FIG. 2 is a diagram showing the configuration of an air compressor according to a second embodiment, in which a pneumatic tool is connected to a compression unit;
  • FIG. 3 is a diagram showing the configuration of an air compressor according to a third embodiment, in which a compression unit is schematically shown.
  • an air compressor may include a compressor unit and an external tank unit.
  • the compressor unit may supply a compressed air to a pneumatic tool.
  • the external tank unit may be connectible with the compressor unit.
  • the external tank unit may include an external tank and a battery.
  • the external tank may store the compressed air.
  • the battery may supply an electric power to the compressor unit.
  • the compressor unit may include an air-compressing device and a battery serving as a power source for driving the air-compressing device.
  • a battery serving as a power source for driving the air-compressing device.
  • one of the batteries can be recharged or replaced with another battery during driving of the air-compressing device by the other battery. Therefore, it is possible to operate the air-compressing device continually for a long time in a manner similar to the case where an AC power source is used.
  • the external tank unit may include a battery charger capable of charging the battery of the external tank unit.
  • the external tank unit may be configured to be able to connect an electric device that is a different device from the compressor unit, so that electric power can be supplied from the battery of the external tank unit to the electric device. In this way, it is possible to further improve the usability of the external tank unit and the air compressor.
  • the battery of the external tank unit may be removably mounted to the external tank unit. With this arrangement, it is possible to replace the battery with another battery or to recharge by a separate battery charger.
  • the air compressor 1 may generally include a compressor unit 10 and an external tank unit 30 connected to the compressor unit 10 .
  • the external tank unit 30 may be mechanically connected to the external tank unit 30 via an air hose 11 .
  • the external tank unit 30 may be electrically connected to the compressor unit 10 via a power cord 11 .
  • An air-compressing device 14 may be disposed within the compressor unit 10 and may be driven by an electric motor 13 that serves as a drive source for the compressor unit 10 .
  • a control circuit 15 may control the operation of the electric motor 13 .
  • a main battery or an internal battery 16 may supply electric power to the electric motor 13 .
  • the compressor unit 10 may include a power switch 22 , so that electric power may be supplied from the internal battery 16 to the electric motor 13 when the power switch 22 is switched on.
  • the internal battery 16 can be removed from the compressor unit 10 for recharging by a charger (not shown) provided separately from the compressor unit 10 , so that the internal battery 16 can be used repeatedly.
  • the compressor unit 10 may further include a power input terminal 23 .
  • the electric cord 12 can be connected to the power input terminal 23 , so that external power can be supplied to a power source circuit of the control circuit 15 via the electric cord 12 . It may be possible to drive the electric motor 13 also by the external power.
  • an external battery 37 provided at the external tank unit 30 can be used to supply external power.
  • the compressed air produced by the air-compressing device 14 may be stored in a storage tank 17 .
  • a pressure sensor 18 may detect the pressure of the compressed air stored in the storage tank 17 and may output a detection signal that may be input to the control circuit 15 .
  • the control circuit 15 may output a control signal to the electric motor 13 , so that the storage tank 17 can be replenished with compressed air.
  • the compressed air stored within the storage tank 17 may be regulated to a given pressure by a pressure regulator 19 .
  • the compressed air having the regulated pressure may be discharged from an air coupler 20 that serves as an air outlet of the compressor unit 10 .
  • a pressure gauge 21 may detect the pressure of the compressed air discharged from the air coupler 20 .
  • the pressure gauge 21 may have a display that can display the detected pressure.
  • the compressed air discharged from the air couple 20 may be supplied to the external tank unit 30 via the air hose 11 that is connected to the air coupler 20 .
  • the external tank unit 30 serves as an auxiliary tank unit for storing the compressed air produced by the air compressing device 14 and for supplying the compressed air to a pneumatic tool T.
  • the external tank unit 30 may have an air coupler 34 that can be connected to the air hose 11 .
  • the compressed air supplied from the compressor unit 10 to the external tank unit 30 via the air hose 11 may be stored in a storage tank 32 .
  • the compressed air stored in the storage tank 32 may be regulated to a given pressure by a pressure regulator 33 and may then be discharged from the external tank unit 30 via an air coupler 34 .
  • the air coupler 34 may be connected to the pneumatic tool T via an air hose, so that the compressed air discharged from the external tank unit 30 may be supplied to the pneumatic tool T.
  • a pressure gauge 35 may detect the pressure of the compressed air discharged from the air coupler 34 .
  • the pressure gauge 35 may have a display that can display the detected pressure.
  • the pneumatic tool T may be a nailer, a tacker or any other tool that may be driven by the compressed air.
  • the electric power of the external battery 37 of the external tank unit 30 may be supplied to the compressor unit 10 via a power output terminal 38 and the power cord 12 .
  • the external battery 37 can be used as a power source for the compressor unit 10 .
  • the external battery 37 can be removed from the external tank unit 30 for recharging by a separate charger, so that the external battery 37 can be repeatedly used.
  • the control circuit 15 may monitor the residual power level of the internal battery 16 and also the residual power level of the external battery 37 . When the residual power level of either the internal battery 16 or the external battery 37 becomes less than a given level, the control circuit 15 may automatically switch the supply of electric power to the electric motor 13 from one to the other of the batteries 16 and 37 .
  • the compressor unit 10 may be used without the external tank unit 30 .
  • the external tank unit 30 may be disconnected from the compressor unit 10 .
  • only the internal battery 16 can be used as a power source.
  • the air coupler 20 may be connected directly to the pneumatic tool T via the air hose 11 . Therefore, the compressed air stored within the storage tank 17 may be directly supplied to the pneumatic tool T. If the supply of compressed air from the compressor unit 10 is insufficient, the user can connect the external tank unit 30 to the compressor unit 10 .
  • the external tank unit 30 can be connected to the compressor unit 10 .
  • the compressor unit 10 has the internal battery 16 and can be used by itself (without the external tank unit 30 ).
  • the external battery 37 can be used as a power source for the electric motor 13 . Therefore, it is possible to use the air compressor 1 for a long time without causing a lack of supply in electric power. As a result, the user can efficiently perform the work using the pneumatic tool T without interruption during use.
  • the first embodiment can be modified in various ways.
  • the pneumatic tool T is connected to the external tank unit 30 having the storage tank 32 .
  • the compressed air stored in the storage tank 32 can be used for driving the pneumatic tool T.
  • the external tank unit 30 is used as an auxiliary tank for the compressor unit 10 .
  • an air compressor 50 according to a second embodiment shown in FIG. 2 is configured such that the pneumatic tool T may be connected to the compressor unit 10 and an external tank unit 60 serving as an expansion tank may be connected to the connector body 10 .
  • the external tank unit 60 may be connected to the storage tank 17 of the compressor unit 10 via an air hose 51 .
  • the pneumatic tool T may be connected to the air coupler 20 of the compressor unit 10 .
  • the compressor unit 10 may be configured to be the same as that of the first embodiment. Therefore, in FIG. 2 , like members are given the same reference numerals as the first embodiment and the description of these members will not be repeated.
  • the external tank unit 60 of the second embodiment may be substantially the same as the external tank 30 of the first embodiment except that the external tank unit 60 does not include the pressure regulator 33 , the air coupler 34 and the pressure gauge 35 .
  • the external tank unit 60 may include an air coupler 61 for connection with an air hose 51 and may further include a power output terminal 62 for connection with the power cord 12 .
  • One end of the air hose 51 may be connected to the storage tank 17 of the compressor unit 10 via an air coupler (not shown).
  • the other end of the air hose 51 may be connected to a storage tank 63 of the external tank unit 60 via the air coupler 61 , In this way, the storage tank 17 of the compressor unit 10 and the storage tank 63 of the external tank unit 60 may be connected to each other via the air hose 51 . Therefore, the compressed air produced at the air-compressing device 14 of the compressor unit 10 may be stored in both the storage tank 17 of the compressor unit 10 and the storage tank 63 of the external tank unit 60 .
  • the external tank unit 60 may have an external battery 64 connected to the power output terminal 62 , so that electric power can be supplied from the external battery 64 to the compressor unit 10 via the power cord 12 .
  • the external battery 64 may be removed from the external tank unit 60 for recharging by a charger, so that the external battery 64 can be repeatedly used.
  • the external tank unit 60 can be connected to the compressor unit 10 .
  • the compressor unit 10 has the internal battery 16 and can be used by itself (without the external tank unit 60 ).
  • the external battery 64 can be used as a power source for the electric motor 13 . Therefore, it is possible to use the air compressor 50 during a long time without causing a lack of supply in electric power. As a result, the user can efficiently perform work using the pneumatic tool T without any significant interruption.
  • the pneumatic tool T may be directly connected to the compressor unit 10 . Therefore, the external tank unit 60 serves as an expansion unit for supplementing the storage capacity of the storage tank 17 .
  • FIG. 3 shows an air compressor including an external tank unit 70 according to a third embodiment.
  • the external tank unit 70 is a modification of the external tank unit 30 of the first embodiment and may be used in combination with the compressor unit 10 as described in the first embodiment.
  • the external tank unit 30 of the first embodiment has the external battery 37 that can be removed for recharging by a charger that may be provided separately from the external tank unit 30 .
  • the external tank unit 70 of the third embodiment includes a charger 39 that can recharge the external battery 37 . Therefore, it is not necessary to remove the external battery 37 for the purpose of recharging. In this way, it is possible to improve the operability of the air compressor.
  • the charger 39 may be connected to an external AC power source, such as an electric outlet (not shown), via a suitable connector.
  • the external tank unit 70 may have an additional power output terminal 40 .
  • An external electric device K may be connected to the additional power output terminal 40 .
  • the external battery 37 can be used as a DC power source for the external electric device K. Therefore, it is possible to further improve the usability of the external tank unit 70 and the air compressor 1 .
  • the external electric device K may be lighting equipment, AV equipment such as a radio or a television, cooking equipment such as a coffee maker or an electric pot, a dust collector, a fan, a blower or any other electric device.
  • an AC power source may be use for the compressor unit 10 in place of the internal battery 16 .
  • the storage tank 17 may be omitted from the compressor unit 10 .
  • the entire amount of compressed air produced by the air-compressing device 14 may be stored in the storage tank 32 of the external tank unit 30 .
  • the compressed air is supplied from the air-compressing device 14 to the storage tank 32 via the air hose 11 .
  • the compressed air produced at the air-compressing device 14 may be initially stored in the storage tank 63 of the external tank unit 60 and then may be supplied to the pneumatic tool T via the compressor unit 10 when needed.
  • the control circuit 15 may automatically switch the supply of electric power to the electric motor 13 from one to the other of the batteries 16 and 37 .
  • the user may manually switch the supply of electric power themselves.
  • an AC power source may be use for the compressor unit 10 in place of the internal battery 16 .
  • the external battery 37 of the external tank unit 30 ( 60 , 70 ) may be used as an auxiliary power source in the event that the supply of the AC power is interrupted because of the power outage or some other reason.
  • the compressor unit 10 without the storage tank 17 can be used by itself when the external tank 30 is disconnected.
  • the compressed air produced by the air-compressing device 14 may be directly supplied to the pneumatic tool T via the air hose 11 .
  • a sufficient output of compressed air can be supplied to the pneumatic tool T as long as the pneumatic tool T is used for a relatively light duty work.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US13/672,251 2011-11-22 2012-11-08 Air compressors Abandoned US20130126025A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-254731 2011-11-22
JP2011254731A JP5826614B2 (ja) 2011-11-22 2011-11-22 エアコンプレッサ

Publications (1)

Publication Number Publication Date
US20130126025A1 true US20130126025A1 (en) 2013-05-23

Family

ID=47227545

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/672,251 Abandoned US20130126025A1 (en) 2011-11-22 2012-11-08 Air compressors

Country Status (4)

Country Link
US (1) US20130126025A1 (zh)
EP (1) EP2597309B1 (zh)
JP (1) JP5826614B2 (zh)
CN (1) CN103133296B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6931847B2 (ja) * 2017-10-13 2021-09-08 アサダ株式会社 真空ポンプ
JP2020169650A (ja) * 2020-07-21 2020-10-15 尼寺空圧工業株式会社 エアーコンプレッサ、エアーコンプレッサの情報表示方法
US11808257B2 (en) 2021-04-15 2023-11-07 Black & Decker Inc. Cordless compressor

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331883A (en) * 1979-10-29 1982-05-25 Grenco S.P.A. Portable power supply unit
US4570449A (en) * 1984-05-03 1986-02-18 Acl-Filco Corporation Refrigeration system
US5742147A (en) * 1994-04-25 1998-04-21 Molina; Daniel Ralph Dc based powering and charging circuit for compressor systems and other mechanical devices
US6067482A (en) * 1999-01-08 2000-05-23 Hussmann Corporation Load shifting control system for commercial refrigeration
US6095762A (en) * 1997-08-08 2000-08-01 Black & Decker Inc. Compressor mechanism for a portable battery operated inflator
US6991437B2 (en) * 2001-02-08 2006-01-31 Black & Decker Inc. Air compressor with improved hand portability
US20060104836A1 (en) * 2003-01-27 2006-05-18 Alan Phillips Cordless compressor

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU582270B2 (en) * 1985-09-04 1989-03-16 Jackson, Renee M. Outboard motor
JPH02108878A (ja) 1988-10-15 1990-04-20 Matsushita Electric Works Ltd 携帯用電動コンプレッサ
WO2001029421A1 (en) * 1999-10-15 2001-04-26 Senco Products, Inc. Portable battery powered air compressor for pneumatic tools
US6942464B2 (en) * 2001-02-08 2005-09-13 Black & Decker Inc. Air compressor with improved hand portability
US7225959B2 (en) * 2001-04-30 2007-06-05 Black & Decker, Inc. Portable, battery-powered air compressor for a pneumatic tool system
US7140845B2 (en) 2003-08-05 2006-11-28 Eming Hsiao Portable air compressor
JP2005240787A (ja) * 2004-03-01 2005-09-08 Hitachi Industrial Equipment Systems Co Ltd パッケージ型圧縮機
JP2006220202A (ja) 2005-02-09 2006-08-24 Yanmar Co Ltd 作業車両の制御装置
JP4782442B2 (ja) * 2005-02-28 2011-09-28 株式会社日立産機システム 可搬式タンク装置
CN201198823Y (zh) * 2005-05-02 2009-02-25 布莱克和戴克公司 压缩机组件
EP2029894B1 (en) * 2006-06-08 2018-09-05 Larry Alvin Schuetzle Reciprocating compressor or pump
CN201187326Y (zh) * 2008-05-09 2009-01-28 牙生·百合提 气压发动机
US7964787B2 (en) * 2008-05-21 2011-06-21 Deepak Jaisinghani Hybrid solar power generator
JP5062068B2 (ja) * 2008-07-04 2012-10-31 日立工機株式会社 空気圧縮機
GB0921222D0 (en) * 2009-12-03 2010-01-20 Shelford Henry G C Improvements in or relating to breathing apparatus
JP5746833B2 (ja) 2010-06-07 2015-07-08 麒麟麦酒株式会社 アルコール感が付与された非アルコール飲料およびその製造方法
CN101922432B (zh) * 2010-10-06 2012-11-07 舟山市定海区巨洋技术开发有限公司 船用及户外型节能空压机

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331883A (en) * 1979-10-29 1982-05-25 Grenco S.P.A. Portable power supply unit
US4570449A (en) * 1984-05-03 1986-02-18 Acl-Filco Corporation Refrigeration system
US5742147A (en) * 1994-04-25 1998-04-21 Molina; Daniel Ralph Dc based powering and charging circuit for compressor systems and other mechanical devices
US6095762A (en) * 1997-08-08 2000-08-01 Black & Decker Inc. Compressor mechanism for a portable battery operated inflator
US6067482A (en) * 1999-01-08 2000-05-23 Hussmann Corporation Load shifting control system for commercial refrigeration
US6991437B2 (en) * 2001-02-08 2006-01-31 Black & Decker Inc. Air compressor with improved hand portability
US20060104836A1 (en) * 2003-01-27 2006-05-18 Alan Phillips Cordless compressor

Also Published As

Publication number Publication date
EP2597309A1 (en) 2013-05-29
JP5826614B2 (ja) 2015-12-02
CN103133296B (zh) 2016-02-10
CN103133296A (zh) 2013-06-05
JP2013108448A (ja) 2013-06-06
EP2597309B1 (en) 2018-04-04

Similar Documents

Publication Publication Date Title
US9819203B2 (en) Electric power tool system
US9748780B2 (en) Electric power tool system
US10576573B2 (en) Portable generator and battery charger verification control method and system
US7781902B2 (en) Generator systems and methods
US20230184236A1 (en) Cordless compressor
US11152805B2 (en) Power source for burst operation
US20060104836A1 (en) Cordless compressor
CA2607203A1 (en) Pneumatic compressor
US20070279000A1 (en) Plug in power adapter and/or battery pack for cordless tools
EP2597309B1 (en) Air Compressors
KR20120116274A (ko) 이동정비차량
JP6837731B2 (ja) 集塵機
US10006450B2 (en) Air compressor
JP2010014057A (ja) 空気圧縮機
CN108233441B (zh) 电源适配器及交直流电源驱动的工具
US20130057075A1 (en) Apparatus and method for charging battery of electric device having motor
US20130119791A1 (en) Electric power tool
JP6406568B2 (ja) 電動工具を駆動制御する電源システムの駆動操作方法
JP3247168U (ja) モバイルバッテリー式コンプレッサー
US20100123432A1 (en) Battery charger
EP4074967A1 (en) Cordless compressor
JP2018155100A (ja) 気体圧縮機
CA2621669A1 (en) Automated mobile power system

Legal Events

Date Code Title Description
AS Assignment

Owner name: MAKITA CORPORATION, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NISHIDO, NORIYUKI;GOTO, MUNETOSHI;REEL/FRAME:029573/0749

Effective date: 20121129

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION