US20040191084A1 - Double shell structure for air pumps - Google Patents

Double shell structure for air pumps Download PDF

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Publication number
US20040191084A1
US20040191084A1 US10/395,074 US39507403A US2004191084A1 US 20040191084 A1 US20040191084 A1 US 20040191084A1 US 39507403 A US39507403 A US 39507403A US 2004191084 A1 US2004191084 A1 US 2004191084A1
Authority
US
United States
Prior art keywords
inner
shell
outer
upper lid
air
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
US10/395,074
Inventor
Chiao-Ming Wang
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.)
Meiko Pet Corp
Original Assignee
Meiko Pet 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 Meiko Pet Corp filed Critical Meiko Pet Corp
Priority to US10/395,074 priority Critical patent/US20040191084A1/en
Assigned to MEIKO PET CORPORAION reassignment MEIKO PET CORPORAION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WANG, CHIAO-MING
Priority to GB0307779A priority patent/GB2400145B/en
Priority to CA 2424816 priority patent/CA2424816A1/en
Priority to FR0306206A priority patent/FR2855241B3/en
Publication of US20040191084A1 publication Critical patent/US20040191084A1/en
Application status is Abandoned legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component parts, details, or accessories, of pumps or pumping systems, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0033Pulsation and noise damping means with encapsulations

Abstract

A double shell structure for air pumps has an outer shell and an inner shell housed in the outer shell for installing an air pump body. The double shell structure can effectively reduce noise leakage resulting from air pump operation.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention [0001]
  • The invention relates to the shell structure of air pumps and particularly to air pumps that have a double shell structure for reducing noise leakage during operation. [0002]
  • 2. Description of the Prior Art [0003]
  • Conventional shell structure for air pumps (referring to FIG. 1) generally includes a shell [0004] 2 consisting of an upper lid 21 and a base 22. The shell 2 has a hollow housing chamber 20 located inside for installing the body 1 of an air pump. When the air pump body 1 operates, air is discharged through an air duct 11 into an aquarium for use. Such a structure generates a greater noise when the air pump body 1 operates. It becomes an annoyance in house environments. While breeding pet fish can enhance environmental aesthetics and provide visual amusement, the generated noise spoils house serenity.
  • SUMMARY OF THE INVENTION
  • In view of the aforesaid disadvantages, the object of the invention is to provide a double shell structure for air pumps to reduce the noise leakage during air pump operation. [0005]
  • The double shell structure of the invention mainly has an inner shell housed in an outer shell. The air pump body is installed in the inner shell. By means of the double shell structure, leakage of noise generated by the air pump during operation may be effectively reduced. [0006]
  • The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings.[0007]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a sectional view of a conventional air pump. [0008]
  • FIG. 2 is an exploded view of the invention. [0009]
  • FIG. 3 is a sectional view of the invention. [0010]
  • FIG. 4 is a sectional view of another embodiment of the invention. [0011]
  • DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • Referring to FIGS. 2 and 3, the invention mainly includes an outer shell [0012] 31 and an inner shell 32 located in the outer shell. The outer shell 31 and the inner shell 32 are interposed by a hollow space 310. The inner shell 32 has a hollow housing chamber 320 for installing an air pump body 4. The outer shell 31 consists of an outer upper lid 311 and an outer base 312 coupling together. The outer base 312 has a top edge forming an indented coupling rim 3124. A sealing gasket 34 is mounted on the coupling rim 3124 to couple with another coupling rim 3112 formed on the inner side of the bottom edge of the outer upper lid 311 to form a seal to enhance noise insulation effect. Then screws 3123 are engaged with screw holes 3121 to fasten the outer upper lid 311. The outer upper lid 311 further has at lest one semi-circular opening 3111 on the lateral side corresponding to at least one semi-circular opening 3122 on the outer base 312 to form at least one air discharge anchor hole A (the number of the hole depends on the number of air discharge ducts of the air pump body 4). The inner shell 32 has an inner base 322 to couple with an inner upper lid 321. The inner base 322 has a hollow chamber 320 for installing the air pump body 4, and one lateral side having at least one notch 3221 to enable an air discharge duct 41 to run through to connect to an elbow duct 42. The elbow duct 42 has another end connecting to another air discharge duct 43 which couples with a duct sleeve 44 for discharging air. The inner upper lid 321 has a downward recess with a lid peripheral rim 3214 slightly larger than the outer peripheral rim of the inner base 322. The inner upper lid 321 further has an opening 3211 to allow an air inlet duct 35 to run through. The air inlet duct 35 has a lower section 351 running through the inner side of the inner upper lid 321 to couple with an opening 361 of a thin sheet 36 (which serves to eliminate transmission of resonance and reduce noise generation) and an opening 331 of a soft pad 33 such that the soft pad 33 may be in contact with the top rim of the inner base 322. Then the inner upper lid 321 may be closed and fastened through engaging screws 3213 into the apertures 3212 and 332 of the inner upper lid 321 and the soft pad 33 and the screw holes 3222 of the inner base 322, thereby to fasten the inner upper lid 321 tightly to the inner base 322.
  • By means of the construction set forth above, when the air pump body [0013] 4 operates (air pump operation is known in the art and forms no part of the invention, thus details are omitted), vibrations and noises occur. Through the double sealing structure of the inner shell 32 and outer shell 31, most noise leakage are eliminated, thus noise annoying problem can be effectively resolved.
  • Refer to FIG. 4 for another embodiment of the invention. An outer shell [0014] 31′ includes an outer upper lid 311′ to cover an outer base 312′. An inner shell 32′ is housed in the outer shell 31′. The inner shell 32′ has a hollow housing chamber 320′ for installing an air pump body 4′. The outer shell 31′ and the inner shell 32′ are interposed by a hollow space 310′. The inner side of the outer upper lid 311′ has an indented and downward lid rim 3110′ to hold a soft pad 33′ for covering to the top rim of the inner shell 32′. The inner shell 32′ has at least one notch 3210′ to enable an air discharge duct 41′ to run through.
  • By means of the construction set forth above, noise resulting from vibrations during air pump operation may be reduced from leaking out. Thus people can enjoy the pleasure of breeding pet fish and the serenity of the house can be maintained. [0015]

Claims (10)

I claim:
1. A double shell structure for air pumps comprising an outer shell and an inner shell housed in the outer shell, the outer shell and the inner shell being interposed by a hollow space therebetween, the inner shell having a hollow housing chamber for installing an air pump body such that noise resulting from operation of the air pump body is reduced from leaking through the inner shell and the outer shell.
2. The double shell structure for air pumps of claim 1, wherein the outer shell includes an outer upper lid and an outer base.
3. The double shell structure for air pumps of claim 1, wherein the inner shell includes an inner upper lid and an inner base.
4. The double shell structure for air pumps of claim 3, wherein the inner base has a lateral side which has at least one notch forming thereon.
5. The double shell structure for air pumps of claim 3, wherein the inner upper lid has a downward recess which has a lid peripheral rim slightly larger than the outer peripheral rim of the inner base.
6. The double shell structure for air pumps of claim 5, wherein the inner base has a top rim in contact with a soft pad, and the inner upper lid being covered on the soft pad to achieve a tightly sealing.
7. The double shell structure for air pumps of claim 6, wherein the inner upper lid has an opening to allow an air inlet duct to run through.
8. The double shell structure for air pumps of claim 7, wherein the soft pad and the inner upper lid are interposed by a thin sheet which has an opening to couple with a lower section of the air inlet duct.
9. A double shell structure for air pumps comprising an outer shell and an inner shell housed in the outer shell, the outer shell and the inner shell being interposed by a hollow space therebetween, the inner shell having a hollow housing chamber for installing an air pump body, the outer shell having an outer upper lid which has an inner side forming a downward rim surrounding a recess for housing a soft pad to allow the outer upper lid to cover the top rim of the inner shell to increase tightly fastening effect.
10. The double shell structure for air pumps of claim 9, wherein the inner shell has at least one notch to allow an air discharge duct to run through.
US10/395,074 2003-03-25 2003-03-25 Double shell structure for air pumps Abandoned US20040191084A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US10/395,074 US20040191084A1 (en) 2003-03-25 2003-03-25 Double shell structure for air pumps
GB0307779A GB2400145B (en) 2003-03-25 2003-04-03 Double shell structure for air pumps
CA 2424816 CA2424816A1 (en) 2003-03-25 2003-04-08 Double shell structure for air pumps
FR0306206A FR2855241B3 (en) 2003-03-25 2003-05-23 Double hull structure for air pump

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/395,074 US20040191084A1 (en) 2003-03-25 2003-03-25 Double shell structure for air pumps
GB0307779A GB2400145B (en) 2003-03-25 2003-04-03 Double shell structure for air pumps
CA 2424816 CA2424816A1 (en) 2003-03-25 2003-04-08 Double shell structure for air pumps
FR0306206A FR2855241B3 (en) 2003-03-25 2003-05-23 Double hull structure for air pump

Publications (1)

Publication Number Publication Date
US20040191084A1 true US20040191084A1 (en) 2004-09-30

Family

ID=33479731

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/395,074 Abandoned US20040191084A1 (en) 2003-03-25 2003-03-25 Double shell structure for air pumps

Country Status (4)

Country Link
US (1) US20040191084A1 (en)
CA (1) CA2424816A1 (en)
FR (1) FR2855241B3 (en)
GB (1) GB2400145B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070102233A1 (en) * 2005-11-07 2007-05-10 Eiko Electric Products Corp. Air pumping device with silencing effect for aquarium
GB2437090A (en) * 2006-04-07 2007-10-17 Meiko Pet Corp Double-shell air pump
US20080187438A1 (en) * 2006-10-20 2008-08-07 Ting-Ching Liao Air flow channel structure for air compressor
US20100319798A1 (en) * 2009-06-18 2010-12-23 Kamtec Inc. Vacuum pump for vehicles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108916004A (en) * 2018-06-12 2018-11-30 杭州小牛空气动力设备有限公司 Vibration absorbing low noise oxygen increasing pump

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5137432A (en) * 1991-05-28 1992-08-11 Tsai Hsien Tang Noise-preventative aquarium pump
US5290157A (en) * 1990-05-29 1994-03-01 Willinger Bros., Inc. Clamp for attaching an aquarium power head
US6098245A (en) * 1998-09-30 2000-08-08 Ryobi North America, Inc. Vacuum cleaner motor assembly
US6321557B1 (en) * 1999-07-02 2001-11-27 Rhys Scrivener Housing apparatus
US6340069B1 (en) * 2000-07-19 2002-01-22 Meiko Pet Corporation Sound elimination structure for air pump
US6428288B1 (en) * 1998-09-11 2002-08-06 Peter J. King Fluid pumps
US6491505B1 (en) * 1999-08-04 2002-12-10 Hella Kg Hueck & Co. Electric air-pump apparatus for motor vehicles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2751469A1 (en) * 1977-11-18 1979-05-23 Peter Ing Grad Ginzler Sound insulation for pumps or motors - uses double walled case enclosing noise-making components with space between walls evacuated
US4982812A (en) * 1989-10-24 1991-01-08 Hwang Min Su Noise-preventive means for compressor used in air conditioner
US5997258A (en) * 1994-05-31 1999-12-07 Bristol Compressors, Inc. Low noise refrigerant compressor having closed shells and sound absorbing spacers
DE10249803A1 (en) * 2001-10-24 2003-05-28 Manfred Schmitt Rain water pump module has pump and control in a substantially sound-insulated housing with twin shell for topping up reservoir and operating with less noise
DE20305368U1 (en) * 2003-04-03 2003-06-12 Meiko Pet Corp Air pump for aquarium is fitted into a double housing for sound proofing

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5290157A (en) * 1990-05-29 1994-03-01 Willinger Bros., Inc. Clamp for attaching an aquarium power head
US5137432A (en) * 1991-05-28 1992-08-11 Tsai Hsien Tang Noise-preventative aquarium pump
US6428288B1 (en) * 1998-09-11 2002-08-06 Peter J. King Fluid pumps
US6098245A (en) * 1998-09-30 2000-08-08 Ryobi North America, Inc. Vacuum cleaner motor assembly
US6321557B1 (en) * 1999-07-02 2001-11-27 Rhys Scrivener Housing apparatus
US6491505B1 (en) * 1999-08-04 2002-12-10 Hella Kg Hueck & Co. Electric air-pump apparatus for motor vehicles
US6340069B1 (en) * 2000-07-19 2002-01-22 Meiko Pet Corporation Sound elimination structure for air pump

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070102233A1 (en) * 2005-11-07 2007-05-10 Eiko Electric Products Corp. Air pumping device with silencing effect for aquarium
GB2437090A (en) * 2006-04-07 2007-10-17 Meiko Pet Corp Double-shell air pump
GB2437090B (en) * 2006-04-07 2008-06-11 Meiko Pet Corp Double-shell air pump
US20080187438A1 (en) * 2006-10-20 2008-08-07 Ting-Ching Liao Air flow channel structure for air compressor
US20100319798A1 (en) * 2009-06-18 2010-12-23 Kamtec Inc. Vacuum pump for vehicles
US8651829B2 (en) * 2009-06-18 2014-02-18 Kamtec Inc. Vacuum pump for vehicles

Also Published As

Publication number Publication date
GB0307779D0 (en) 2003-05-07
FR2855241B3 (en) 2005-04-08
FR2855241A3 (en) 2004-11-26
GB2400145A (en) 2004-10-06
GB2400145B (en) 2005-05-18
CA2424816A1 (en) 2004-10-08

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MEIKO PET CORPORAION, TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WANG, CHIAO-MING;REEL/FRAME:013905/0518

Effective date: 20030317

STCB Information on status: application discontinuation

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