US3545894A - Air pump - Google Patents

Air pump Download PDF

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Publication number
US3545894A
US3545894A US3545894DA US3545894A US 3545894 A US3545894 A US 3545894A US 3545894D A US3545894D A US 3545894DA US 3545894 A US3545894 A US 3545894A
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US
United States
Prior art keywords
inlet
housing
outlet
valve
diaphragm
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.)
Expired - Lifetime
Application number
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English (en)
Inventor
David D Lovitz
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.)
Sternco Industries Inc
Original Assignee
Sternco Industries 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 Sternco Industries Inc filed Critical Sternco Industries Inc
Application granted granted Critical
Publication of US3545894A publication Critical patent/US3545894A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/1046—Combination of in- and outlet valve
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/047—Pumps having electric drive
    • 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
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7879—Resilient material valve
    • Y10T137/788—Having expansible port
    • Y10T137/7882—Having exit lip
    • Y10T137/7886—Internally extending mount

Definitions

  • FIG. 1 A first figure.
  • FIG. 1 A first figure.
  • a vibrator air pump comprising a bellows connected to a vibratory armature actuated by an AC. electromagnet and communicating with a valve housing and a diaphragm valve member operatively associated with respective inlet and outlet passageways, whereby alternate suction and pressure conditions are produced within the housing.
  • the said diaphragm valve member is, in its preferred form, a thin flat disc having two spaced narrow flexible slotted portions constituting inlet and outlet valves, the suction within the housing pulling one of said slotted portions out of the plane of the disc towards the interior of the housing to draw in air from the inlet passageway, and the pressure within the housing forcing the other of the slotted portions out of said discs plane away from the interior of the housing to discharge air into the outlet passageway, whereby a continuous pumping action is produced.
  • the invention relates to vibrator air pumps, and is particularly although not exclusively directed to air pumps adapted for use with home aquariums and the like.
  • Air pumps for home aquariums and other air-receiving devices especially those that do not require the delivery of large volumes of air, generally have delicate and comparatively complex valve members that cannot be repaired, removed and replaced by persons without special mechanical aptitudes or training.
  • the components are either permanently secured together or connected by special fasteners, whereby the device must be brought to a repair shop, or entirely replaced when inoperative.
  • an electrically operated air pump of the vibratory type (1) having valve means of extremely simple and inexpensive construction and which can readily be replaced by a person without special mechanical skills; (2) wherein the said valve means comprises a unitary member with both inlet and outlet ports and having no separate movable elements; (3) wherein said valve means serves both as a two-way valve and as a means to prevent leakage into and out of the valve housing; and (4) comprising interlocking components which can be assembled and disassembled without the use of bolts, screws or other fastening elements.
  • a pump assembly is employed con- 3,545,894 Patented Dec. 8, 1970 sisting of an AC. electromagnet operatively associated with a permanent magnet mounted on a pivotally supported armature, the latter being connected to bellows to give it a vibratory pumping action.
  • the bellows member is mounted over a valve housing which comprises a cylindrical wall and a floor defining a pump chamber communicating with the bellows.
  • a flat flexible diaphragm valve member preferably made of a resilient membrane, resting on the underlying floor of the pump chassis, the diaphragmin the form of a thin disc in the embodiment illustratedbeing held pressed between both of said floors, thereby serving the auxiliary function of a gasket to prevent leakage.
  • Said diaphragm valve member has two spaced slotted portions, one constituting an inlet membrane valve and the other an outlet membrane valve.
  • the housing floor has an inlet and an outlet aperture
  • the chassis floor has correspondingly positioned inlet and outlet passageways. Normally, that is, when the pump is not operating, the diaphragm is in one plane, the arrangement being such that the inlet slot thereof is in alignment only with the inlet aperture of the valve housing and the outlet slot thereof is in alignment only with the outlet passageway of said chassis floor, the flat solid body portion of the diaphragm being in closing relation to both the intake and discharge conduits.
  • the operative suction within the pump chamber will pull the inlet slotted portion of the diaphragm out of the plane thereof into the inlet aperture of the valve housing floor, whereby air is drawn through the now opened inlet passageway into the pump chamber, the suction holding the diaphragm valve in closing relation to the outlet passageway; and at the completion of the pumping cycle the pressure within the pump chamber will push the portion of the diaphragm adjacent the said inlet slotted portion thereof into its inlet closure position against the chassis floor, and at the same time will push the outlet slotted portion of the diaphragm out of its plane into the outlet passageway of the chassis floor, whereby air is operatively discharged from the pump.
  • FIG. 1 is a perspective view of a vibrator air pump and base according to one form of this invention.
  • FIG. 2 is an exploded view of the assembly of FIG. 1, portions of certain of the components being broken away for clarity.
  • FIG. 2A is a bottom perspective view of the pump housing member.
  • FIG. 3 is a plan view of the air pump of FIG. 1.
  • FIG. 4 is a section of FIG. 3 taken along line 4-4.
  • FIG. 5 is a section of FIG. 3 taken along line 5-5.
  • FIG. 6 is an enlarged fragmentary sectional plan of FIG. 4 taken along line 66, the diaphragm valve being shown in its inoperative position.
  • FIG. 6a is a fragmentary view like FIG. 6, but showing the inlet port of the diaphragm valve in its open position, the section being taken along line 6a6a of FIG. 8.
  • FIG. 7 is a section of FIG. 4 taken substantially along line 77.
  • FIG. 8 is an enlarged fragmentary portion of FIG. 4 showing the valve housing and chassis with the inlet port of the diaphragm valve open.
  • FIG. 9 is a view substantially like FIG. 8, but showing the outlet port of the diaphragm valve open.
  • FIG. 10 is a fragmentary section of FIG. 8 taken substantially along line 1010.
  • FIG. 11 is a fragmentary section of FIG. 9, taken substantially along line 1111.
  • FIG. 12 is a longitudinal section taken substantially along line 12-12 of FIG. 1 showing the main pump assembly operatively positioned in the base.
  • FIG. 13 is a bottom view of FIG. 4.
  • the vibrator air pump illustrated in the drawing comprises a main assembly generally designated by the reference numeral 15 operatively positioned within the preferably flexible base 16.
  • the said main pump assembly 15 comprises the chassis 17, the alternating current electromagnet 18, the hold-down spring clip 19 removably securing said electromagnet 18 to the chassis 17, the flexible diaphragm 20, preferably of thin elastic material, serving as a combination valve and gasket (in a manner to be fully described hereinbelow), the flanged valve housing 21 positioned upon said diaphragm, the locking ring 22 removably holding said housing 21 and diaphragm 29 in operative engagement on the said chassis 17, the rubber bellows 23 positioned over the upper portion of said valve housing 21 and in yieldable engagement therewith, the vibratory armature 24 operatively mounted over the upwardly extending dome 25 of said bellows 23, and
  • the permanent magnet 26 adhesively secured to the inner end wall 27 of the armature.
  • the afore-said components are interlockingly engaged with adjacent components without the use of any special fastening meanswhereby a firm assembled securement of the components can be effected by simple manual manipulation, and whereby a disassembly can similarly be readily manually effected.
  • the said chassis 17 has at the opposite longitudinal ends thereof the lips 28 and 29 positioned and proportioned for interlocking engagement with the recessed transverse strips 30 and 31 of the base 16.
  • the said base 16 has an air inlet aperture 32 in the floor 16a thereof, and legs 33 for providing a space below said floor, whereby air may be admitted through the said aperture 32 into the chamber 34 which underlies the said diaphragm valve member 20, so that air can be drawn into the valve housing 21 in a manner to be more fully hereinafter explained.
  • the said A.C. electromagnet 18 has its lower portion fitted into the recessed portion 35 of the chassis 17, the arms 36 and 37 of said spring clip 19 straddling said electromagnet, the respective fingers 38 and 39 of said arms being removably positioned within the respective cars 40 and 41 at opposite sides of the chassis, the arrangement being such that when said fingers 38 and 39 are operatively in place the resilient crossbar 42 at the top of said spring clip 39 is in yieldable engagement with the pole 43 of the said electromagnet 18, thereby yieldably holding said electromagnet in place.
  • the said A.C. electromagnet 18 is of conventional construction, and hence need not be described in detail for the purpose of this specification.
  • the said armature 24 contains the apertured portion 47 through which said dome 25 extends, said dome having the annular recess 48 interengaged with the wall defining said apertured portion 47, the conical portion 49 of said dome permitting the said armature 24 to be slid downwardly over the dome to elfect such engagement.
  • the outer portion of said armature 24 contains the recessed portion 50, shown in this embodiment as of rectangular configuration, the outer Wall of said apertured portion 50 having a forwardly protruding rib 51 extending into the recessed portion 53 at the upper outer portion of the post 54 integral with and extending upwardly from the floor 55 of the chassis 17.
  • the arrangement is hence such that the said armature 24 is pivotally connected to said post 54, whereby the operative vibratory motion of said armature 24 will be transmitted to the dome 25 of the bellows 23 to produce an up and down vibratory pumping action thereof.
  • the top stem 52 of the dome 25 is offset rearwardly with respect to the center line 56 of the bellows.
  • the position of the apertured portion 47 of the armature is such as to cause this offset arrangement when it is connected to the bellows, whereby the dome 25 is bent in the direction of the said post 54.
  • the dome 25 thus exerts a forward force on the armature 24 in the direction of arrow A, so that the rear pivotal end 57 of the armature 24 is yieldably maintained in engagement with the said recessed portion 53 of the said post 54, thereby not only permitting a positive vibratory action of said armature, but also permitting the armature to be yieldably disassembled from the post 54 when necessary.
  • the operative pumping action of the bellows 23 produces cycles of alternate suction and pressure in the pump chamber 58, whereby air will be operatively drawn into said chamber through said slotted diaphragm 20 and then expelled in an opposite direction therethrough into the discharge pipe 59 which is connected to an aquarium or other device intended to be used coactively with this pump. It is the construction of said diaphragm valve 20, in coactive engagement with said pump housing 21 and the underlying chassis floor 55, that permits the pumping action of this device to be etfectuated in accordance with the objectives of this invention.
  • the said diaphragm member 20 shown in the form of a membranous disc made of rubber or other suitable resilient sheet material, contains two spaced air orifices in the form of slotted portions 60 and 61, the former constituting a membranous inlet valve and the latter a membranous outlet valve.
  • the device is operable if only the said slotted portions are of membranous sheet material capable of being bent out of their normally flat plane.
  • the said diaphragm also contains two pilot holes 62 and 63 adapted for positioning over the pilot pins 64 and 65., respectively, extending upwardly from the floor 55 of the chassis 17. Said latter floor also has therein the inlet passageway 66 and the larger outlet passageway 67. The arrangement is such (see FIGS.
  • Said housing 21 has the cylindrical wall 21a and the floor 69 containing the large inlet aperture 70 and the relatively small Outlet aperture 71, said floor 69 extending outwardly peripherally to form the flange 72.
  • Said floor also contains at the underside thereof two recessed portions 73 and 74 adapted to receive therein the respective pilot pins 64 and 65.
  • the said inlet aperture 70 When said valve housing 21 is operatively placed upon the floor 55 of the chassis 17, with the said pins 64 and 65 operatively positioned within the said respective recesses 73 and 74, the said inlet aperture 70 will be positioned above and in alignment and communication with the said slot '60, the said outlet aperture 71 will be offset to the left with respect to said outlet slot 61, the said inlet passageway 66 will be offset to the right with respect to said inlet slot 60, and said outlet passageway 67 will be positioned below and in alignment and communication with said outlet slot 61.
  • the diaphragm acts as a closure for the inlet passageway 66 of the chassis floor 55 and for the outlet aperture 71 of the housing floor 69.
  • inlet and outlet passageways 66 and 67 respectively, have their upper ports 66:: and 67a terminating in the upper plane of the chassis floor 55, whereby the plane of the diaphragm in its inoperative position is in the plane of said inlet and outlet ports.
  • the said housing 21 is maintained in pressing relation with the diaphragm 20 through the action of the locking ring 22 which is interengaged with the flange 72 of housing 21 and the spaced bayonet lugs 75, 76 and 77 combinatively forming a bayonet lock of known construction.
  • the locking ring contains the lugs 78 positioned and proportioned for slidable engagement with the recessed portions 79 of said respective lugs 75, 76 and 77, whereby the ring 21 can be twisted into retractable locking position while bearing down upon the flange 72 of the housing 21.
  • the said flange 72 is in engagement with the peripheral portion of the diaphragm valve 20, as clearly indicated in FIG.
  • said passageway 67 communicates with said discharge pipe 59 which extends through the aperture 80' in the bearing 81, as shown in FIGS. 2 and 12.
  • An air pump comprising an open-top housing having an annular Wall, an annular flange at the base thereof and a floor, a chassis having a floor in underlying supporting engagement with said housing, said floors having in registered relation respective inlet and outlet conduits, valve means comprising a thin disc of flexible elastic material with two spaced slotted portions constituting inlet and outlet orifices, said disc being positioned between said floors with said respective slotted portions in operative adjacent relation to said respective conduits, reciprocating pumping means having a bellows mounted over said housing and in communication with the upper open part thereof, reciprocating actuating means for said bellows, said chassis having a plurality of upwardly extending bayonet lugs, retractable locking means in releasable engagement with said housing and chassis for holding said floors thereof in pressing engagement, said locking means comprising a locking ring rotatably mounted over said annular wall and in rotatable engagement with said flange and having a plurality of lugs slidably interengaged with said bayonet lug
  • An air pump comprising a housing, separate inlet and outlet conduit means positioned for communication with the interior of said housing, valve means comprising a thin membranous disc of elastic material having two spaced slotted portions, one constituting an inlet valve portion in coactive relation to said inlet conduit means and the other an outlet valve portion in coactive relation to said outlet conduit means, reciprocating pumping means in communication with said housing and said conduit means for producing therein alternate operative conditions of suction and pressure, whereby during said conditions of suction said inlet valve portion will be operatively drawn into an open position with respect to said inlet conduit means and during said conditions of pressure said outlet valve will be operatively forced into an open position with respect to said outlet conduit means, thereby etfecting the cyclic operative drawing in of air into said housing and discharge of air therefrom, said pump having a chassis in supporting engagement with said disc and housing, said chassis and housing each having a floor, said inlet conduit means comprising an inlet aperture and an inlet passageway in said respective housing and chassis floors, said outlet conduit means comprising

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Reciprocating Pumps (AREA)
US3545894D 1969-04-15 1969-04-15 Air pump Expired - Lifetime US3545894A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81619069A 1969-04-15 1969-04-15

Publications (1)

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US3545894A true US3545894A (en) 1970-12-08

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ID=25219921

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Application Number Title Priority Date Filing Date
US3545894D Expired - Lifetime US3545894A (en) 1969-04-15 1969-04-15 Air pump

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US (1) US3545894A (enExample)
DE (1) DE1942548C3 (enExample)
DK (1) DK131207B (enExample)
GB (1) GB1271130A (enExample)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635592A (en) * 1969-07-29 1972-01-18 Erwin Kolfertz Electrically operated double-diaphragm pump
US3784334A (en) * 1972-04-03 1974-01-08 Johnson Service Co Electromagnetically driven fluid compressing apparatus
US3830596A (en) * 1972-01-18 1974-08-20 R Kondo Air pump
US4052849A (en) * 1975-10-20 1977-10-11 Vibranetics, Inc. Mechanical work generating means
US4162876A (en) * 1976-01-28 1979-07-31 Erwin Kolfertz Electromagnetically driven diaphragm pump
US4444548A (en) * 1980-08-08 1984-04-24 University Testing Service Inc. Suction apparatus
US5730587A (en) * 1996-07-17 1998-03-24 Apollo Enterprises, Inc. Band drive dual diaphragm pump
WO2015164530A1 (en) * 2014-04-22 2015-10-29 Prolitec Inc Air supply device and related methods of manufacture
US20160290325A1 (en) * 2012-11-14 2016-10-06 Koninklijke Philips N.V. A fluid pump
US9480767B1 (en) 2015-10-20 2016-11-01 Prolitec Inc. Removable cartridge and cap assembly for an air treatment appliance
US9486552B1 (en) 2015-10-20 2016-11-08 Prolitec Inc. Air treatment appliance

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3013624A1 (de) * 1980-04-09 1981-10-15 Tetra Werke Dr.Rer.Nat. Ulrich Baensch Gmbh, 4520 Melle Gehaeuse fuer aquarienfilter
DE3305657A1 (de) * 1983-02-18 1984-08-30 J. Wagner Gmbh, 7990 Friedrichshafen Druckbehaelter zur aufnahme von zu foerdernden fluessigkeiten
US5626464A (en) * 1995-05-23 1997-05-06 Aquatec Water Systems, Inc. Wobble plate pump
US5632607A (en) * 1995-11-01 1997-05-27 Shurflo Pump Manufacturing Co. Piston and valve arrangement for a wobble plate type pump
US20100099002A1 (en) * 2008-10-21 2010-04-22 Gm Global Technology Operations, Inc. Fluid pump with an integrated mounting interface
CN115735841B (zh) * 2022-12-07 2024-05-24 东北林业大学 一种用于鱼类生态保护的增氧机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169827A (en) * 1936-03-06 1939-08-15 Stewart Warner Corp Electric fuel pump
US2809589A (en) * 1955-03-11 1957-10-15 Chalmers H Randolph Electro-magnetically operated pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2169827A (en) * 1936-03-06 1939-08-15 Stewart Warner Corp Electric fuel pump
US2809589A (en) * 1955-03-11 1957-10-15 Chalmers H Randolph Electro-magnetically operated pump

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635592A (en) * 1969-07-29 1972-01-18 Erwin Kolfertz Electrically operated double-diaphragm pump
US3830596A (en) * 1972-01-18 1974-08-20 R Kondo Air pump
US3784334A (en) * 1972-04-03 1974-01-08 Johnson Service Co Electromagnetically driven fluid compressing apparatus
US4052849A (en) * 1975-10-20 1977-10-11 Vibranetics, Inc. Mechanical work generating means
US4162876A (en) * 1976-01-28 1979-07-31 Erwin Kolfertz Electromagnetically driven diaphragm pump
US4444548A (en) * 1980-08-08 1984-04-24 University Testing Service Inc. Suction apparatus
US5730587A (en) * 1996-07-17 1998-03-24 Apollo Enterprises, Inc. Band drive dual diaphragm pump
US20160290325A1 (en) * 2012-11-14 2016-10-06 Koninklijke Philips N.V. A fluid pump
US9920752B2 (en) * 2012-11-14 2018-03-20 Koninklijke Philips N.V. Fluid pump
WO2015164530A1 (en) * 2014-04-22 2015-10-29 Prolitec Inc Air supply device and related methods of manufacture
US9358562B2 (en) 2014-04-22 2016-06-07 Prolitec Inc. Air supply device and related methods of manufacture
CN106659814A (zh) * 2014-04-22 2017-05-10 普罗利特科公司 空气供给设备和相关的制造方法
US9480767B1 (en) 2015-10-20 2016-11-01 Prolitec Inc. Removable cartridge and cap assembly for an air treatment appliance
US9486552B1 (en) 2015-10-20 2016-11-08 Prolitec Inc. Air treatment appliance

Also Published As

Publication number Publication date
DE1942548A1 (de) 1970-10-29
DK131207C (enExample) 1975-11-24
GB1271130A (en) 1972-04-19
DE1942548C3 (de) 1974-10-17
DK131207B (da) 1975-06-09
DE1942548B2 (de) 1974-03-21

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