US2623376A - Electrical appliance for producing oscillations or vibrations for laundry purposes - Google Patents

Electrical appliance for producing oscillations or vibrations for laundry purposes Download PDF

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Publication number
US2623376A
US2623376A US105996A US10599649A US2623376A US 2623376 A US2623376 A US 2623376A US 105996 A US105996 A US 105996A US 10599649 A US10599649 A US 10599649A US 2623376 A US2623376 A US 2623376A
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US
United States
Prior art keywords
diaphragm
casing
appliance
armature
electro
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
US105996A
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English (en)
Inventor
Volk Karl
Holzbaur Eugen
Klemm Ernst
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
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Publication of US2623376A publication Critical patent/US2623376A/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F7/00—Washing devices adapted to be used independently of any particular receptacle, e.g. for removable mounting on wash-tubs, bath-tubs, or the like
    • D06F7/04—Washing devices adapted to be used independently of any particular receptacle, e.g. for removable mounting on wash-tubs, bath-tubs, or the like of the vibrator type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/02—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation
    • B03B5/10—Washing granular, powdered or lumpy materials; Wet separating using shaken, pulsated or stirred beds as the principal means of separation on jigs
    • B03B5/24—Constructional details of jigs, e.g. pulse control devices

Definitions

  • an electro-ma'gn'etic driving means is employed for exciting a vibrating or oscillating body, the vibrations o'r'oscillations of whichare transmitted to the washiiig li'qiiid'.
  • Fig. 1 is alongitudin'al section of the" first embodiment incorporating a single electrb niagnet and a single diaphragm.
  • Fig. 2 is a longitudinal section of a second. embodiment incorporating. two diaphragm's actuated by a singleelectro-magnet.
  • Fig. Bis a thirdexamplehaving two electromagnets and two *diaphragms-,-zalso'in longitudinal section.
  • Fig. 4 is a further-longitudinal section illustrating a fourth embodiment provided with' a har: monic wave exciter in the formmfian oscillating or vibrating. beam or a. corrugated circular" disc;
  • Fig. 5 isamodification'of' the'forni shown in Fig. 4.
  • Fig; 6 is a sectionaldiagram showinglan'appli ance according-to this inventionfitted'in'ai laun dry container, such as a boiler.
  • Fig. '7 is a: fifth embodiment partly in longitudinal' section of an appliance having a device adapted to compensate or balance the pressure differences in the interior of the appliance.
  • Fig. 8 is a longitudinal section through apart of the appliance shown in'Fig. 7.
  • Fig. 9 is a sixth embodiment in longitudinal section.
  • Fig. 10 is a fragmentary section showing a modification of this embodiment.-
  • Fig. 11 is' a" longitudinal section of a seventh embodiment.
  • Fig. 12 is an eighthembcdiment, also inlcn'gitudinal section;
  • ii ⁇ designates a metal diaphragm'inthe'form of a circular disc.
  • the electro-ma'gnet When the appliance is connectedwith'theelectricity supply mains and set in operation, the electro-ma'gnet periodically draws and releases its armature E2 in the rhythm orfrequency oi the alternating current to 'and from the core Such reciprocatory movement of the armature is transmitted to the diaphragm l0 and a vibration or oscillation correspondingto'twice the mains frequency is consequently imparted to the diaphragm.
  • the method of operation of the instrument or appliance when immersed in water is such that the molecules of the liquid entering the casing I6 via the screen or lattice IT and surrounding the diaphragm are accelerated by the vibrations of the diaphragm.
  • the greatly accelerated water particles are particularly suitable for and capable of removing particles of dirt or other foreign matter, which have already been loosened by the washing powder or other cleaning medium, from the fibre of the clothes 01' other material being laundered.
  • two coaxially disposed diaphragms and 26 are spaced apart and clamped or tensioned at opposite sides of a ring 21 together with respective screens or protective lattices 28 and 29. Both diaphragms are firmly connected with the excitation means so that the magneto core I4 is firmly connected with the diaphragm 25 and the armature [2 of the electro-magnet is firmly connected with the diaphragm 26.
  • the carrier tube I9 is inserted into an aperture 3!] in the ring 27 and is secured therein.
  • Fig. 3 differs from that of Fig. 2 in that two diaphragms 3
  • an additional vibratory body in is disposed on a bolt 39 which is secured to the diaphragm It and carries the armature l2.
  • This additional vibratory body has its own frequency of vibrations, which is substantially above that of the diaphragm Hi.
  • the vibratory body 40 suspended in the middle of the diaphragm is in the form of a beam which tapers towards its ends. It may also, however, be constructed as a circular disc, which, as shown in Fig. 5, is provided with annular corrugations.
  • Such additional vibrating or oscillating bodies are particularly suitable for superimposing heavy upper or harmonic vibrations upon the basic vibrations of the vibration system on the impinging of said vibration system.
  • the appliance is very simple to use and may be operated as follows. After the hot, or preferably, boiling water, to which is added the usual washing agents, and the laundry have been placed in the boiler (Fig. 6) and the appliance has been suspended in the boiler so that its entire casing is submerged below the Water level, the electric alternating current is switched on to caus the appliance to operate.
  • means such as an adjustable bearing ring 55 may be fitted to the carrier pipe I9 and which ring also serves to cover the aperture 51 in the lid '53 of the wash boiler, a fixing or clamp screw being carried by the ring to secure same in position.
  • the appliance is preferably connected with the main supply through an electrical transformer which reduces the potential to a value which is not dangerous for contact with the body.
  • An interrupter device of any suitable type may be built into the appliance and a condenser may also be provided if necessary so that the appliance may also be used on a direct current supply.
  • the vibrator or oscillation producer shown in Fig. '7 consists of a metal diaphragm It in the form of a circular disc which is clamped at its outer edge to the casing 16 and connected hermetically with the casing by means of a packing ring I28.
  • the laminated armature i 2 of the electro-magnet I3 is fixed by means of the bolt l l to the diaphragm in the centre thereof.
  • An aperture use for bolt H is hermetically sealed by a packing disc iii].
  • the core it of the electro-magnet with the excitation coil 55 is secured to a strut or bridge 2i! fixed to the base of casing iii.
  • the tube or pipe 59 is inserted into the base of the casing and is preferably securely welded thereto.
  • a non-return valve 226 is provided at the free end of the pipe in order to prevent the admission of air from the atmosphere to th internal chamber or space of casing E8.
  • the valve which is shown in detail in Fig. 3, has a valve disc 239 formed with a conical bearing surface 268 which normally rests upon a correspondingly shaped seating surface formed at the end of pipe is and is pressed against this surface by a spring 250 which abuts against a cap nut 236 screwed on to a threaded collar fixed to this end of the pipe, the cap nut being provided with an aperture 210 for the passage of air.
  • a feed cable 280 for the excitation coil 55 extends within the pipe l9 and passes out hermetically through a bore 290 formed in a nipple 3G8 screwed into the side of pipe IS.
  • a packing ring 5 5 El is located between the nipple and the pipe IS.
  • the outer end of th nipple is formed with a funnel-shaped seating surface 328 for a rubber sealing ring 338 which is pressed by means of a cap nut 34!] against the seating surface and the cable 280 passing through it.
  • Fig. 9 omits the nonreturn valve of Figs. '7 and 8 for solving the problem with which the invention is concerned, but other means is provided to ensure that the space enclosed by easing l6 and diaphragm III will conform to any alteration of the air pressure contained' therein, without the difference between the pressure in the casing and the atmosphere thereby assuming such proportions likely to interfere with the action of the appliance.
  • resilient or yielding hollow bodies 400 which are formed in this example by bellow-like chambers MB of thin sheet metal which are sealed from the interior of the casing by means of lids or covers 420, whilst the other end of the bellow-like chambers are soldered or welded to the casing wall.
  • the casing wall has holes 430 which communicate with the interiors of the chambers.
  • sack or bag-like bladders of rubber or similar materials may also be used as shown in Fig. 10 in which a hollow body iillla or this kind is provided with a small pipe piece 400?) which passes through the opening 439 of the casing, wall.
  • the pipe piece has a flange 4800 which is pressed against. the casing wall by means of a cap ring 400d screwed tothe casing.
  • Fig. 11 illustrates a further example in which the electro-magnetic driving means 13 is hermetically enclosed-in a pot-like casing 4-50, which is hermetically sealed by a cover plate 46d.
  • a central opening 419 is formed in the cover plate through which a belt 480 extends from the interior of the casing.
  • an elastic or resilient member such as a corrugated diaphragm or membrane 49!! which is hermetically connected with the bolt and with the cover plate, for instance, by soldering.
  • the flexible member is of sufficient dimensions to permit the required longitudinal movement of the bolt on operation of the driving means.
  • the laminated armature body I2 of the electromagnet I3 is secured to th internal end of the bolt, and a vibratory or oscillatory body in the form of the metal diaphragm I is secured to the external end.
  • the diaphragm is secured at its outer edge to a ring 500 which is firmly connected with the casing 459 by spaced struts or extensions H] which may be formed integral with casing 350.
  • the problem of the invention is solved by constructing the surface at which a pressure above atmospheric arising in the casing may engage on the moving parts of the driving means, as small as possible.
  • the entire engaging surface for the pressure force is thus composed of a small part of the diaphragm surface Mail and the cross-section area of the bolt .88.
  • FIG. 12 A further example of the subject of the invention is shown semi-diagrammatically in Fig. 12.
  • the casing 520 enclosing the electromagnet is is made as small as the dimensions of the electro-magnet permit in order that the space enclosed by the casing and the diaphragm ill may be as small as possible.
  • a pipe i9 is connected to the base of the casing for the passage of the electricity supply lead 280 to the electro-magnet l3 of the appliance.
  • the free end of the pipe I9 is in efiect widened to form a chamber 530 which is located as remote as possible from casing 520' and is not immersed in the hot water during operation of the appliance.
  • the capacity of the chamber 530 greatly exceeds that of the casing 520 in order to maintain a low gauge pressure occurring in the casing 520 on the heating. of the air present therein. This is achieved, as previously mentioned, by the fact that the casing 520, which is immersed in hot water when the appliance is operated, has a much smaller air capacity than the chamber 530 which thus remains considerably cooler than the casing, the latter being situated outside the water container.
  • the air enclosed in the casing 52 0 expands owing to heating, it will mix with the cooler air in the pipe l9 and in the chamber 530 and the temperature rise relative to the. atmospheric air, corresponding. to the volume and temperature conditions of the two masses of air, will be considerably less than the temperature rise which would obtain in the air in the. casing. 52.0 if the chamber 53!] were not present.
  • a vibratory body in the form of a diaphragm of stiiimaterial such as metal, and. electro-magnetic driving means for vibrating said body, said electro-magnctic means including a movable armature connected to said diaphragm. and a stop for limiting the movement-of said armature.
  • an electro-magnetic driving means in said chamber and located between said diaphragms for independent actuation thereof and at least one stop for abruptly limiting the movements of at least one of said diaphragms in at least. one direction.
  • a vibratory body in the form of a diaphragm, electro-rnagnetic driving means for vibrating, said diaphragm, at least one stop for abruptly limiting the movements of said diaphragm in at least one direction, at least one additional vibratory body also driven by said driving means and having an independent frequency of vibration substantially above that. of the diaphragm.
  • an additional vibratory body in the form of a beam said beam being rigidly connected with the diaphragm ⁇ 7.
  • an additional vibratory body in the form of a disc said disc being rigidly connected to the diaphragm.
  • an additional vibratory body in the form of a corrugated disc, said disc being rigidly connected to the diaphragm.
  • a pipe connected with the casing, a nonreturn valve disposed adjacent the end of the pipe, an electricity supply lead for the electromagnetic means passin through the pipe and extending through the Wall thereof in an airtight manner.
  • An electrical apparatus for laundry purposes for producing vibrations in liquids a vibratory body, electro-magnetic driving means for vibrating said body, including an electromagnet, an armature and a member connecting the armature with the vibratory body, a watertight casing enclosing said electro-magnet and armature including a wall having an opening therein through which said connecting member passes and sealing means between said connecting member and said Wall and at least one stop for abruptly limiting the movements of said diaphragm in at least one direction.
  • An electrical apparatus for laundry purposes for producing vibrations in liquids a vibratory body, electro-magnetic driving means for vibrating said body, including an electro-magnet, an armature and a member connecting the armature With the vibratory body, a water-tight casing enclosing said electro-magnet and armature including a Wall having an opening therein through which sai dconnecting member passes and a small diaphragm between said connecting member and said wall serving to seal the opening in said Wall and at least one stop for abruptly limiting the movements of said diaphragm in at least one direction.
  • an additional chamber in communication with the casing enclosing the electro-magnetic driving means, said chamber being spaced apart from said casing so that it remains outside the washing liquid when the appliance is immersed therein during operation.
  • an additional chamber in communication with the casing enclosing an electro-magnetic driving means, said chamber being spaced apart from said casing so that it remains outside the Washing liquid when the appliance is immersed therein during operation, the air capacity of said additional chamber being at least twice that of the interior space of the casing enclosing the electro-magnetic driving means.
  • a diaphragm In an electrical appliance for producing vibrations in liquids, a diaphragm, electro-magnetic driving means for vibrating said diaphragm,
  • an electro-magnetic driving means including a movable armature connected to said diaphragm and movable relative to the stop.
  • an electro-magnetic driving means including an iron core which forms the stop for the diaphragm
  • a diaphragm in the form of a circular disc, a cup shaped casing, said diaphragm being attached to-the edge of the casing, an electro-magnet comprising a core fastened to the casing, a coil arranged on the core, and an armature rigidly connected to said diaphragm, the distance between the armature and the magnet core being so dimensioned that the movement of the diaphragm and core on their attraction by the electro-magnet is abruptly stopped by the core.
  • a portable electrical appliance for producing vibrations in liquids comprising a diaphragm, a concavo-convex casing having its concave side facing the diaphragm, said diaphragm being attached at its periphery to the edge of the casing, an electro-magnet comprising a core mounted on the concave side of the casing at the center thereof, a coil arranged on the core and an armature rigidly connected to the diaphragm and confronting the core, the distance between the armature and core being so dimensioned that the movement of the diaphragm on the attraction of the electro-magnet being abruptly limited by the core which defines a stop.
  • a vibratory body for vibrating said body, electro-magnetic driving means for vibrating said body, and at least one stop for abruptly limiting the movements of said body in at least one direction, said electro-magnetic driving means including an iron core which forms the stop for said body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
US105996A 1948-10-02 1949-07-21 Electrical appliance for producing oscillations or vibrations for laundry purposes Expired - Lifetime US2623376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP9428D DE828235C (de) 1948-10-02 1948-10-02 Elektrisches Geraet zum Erzeugen von Schwingungen in Fluessigkeiten, insbesondere fuer Waschzwecke

Publications (1)

Publication Number Publication Date
US2623376A true US2623376A (en) 1952-12-30

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US105996A Expired - Lifetime US2623376A (en) 1948-10-02 1949-07-21 Electrical appliance for producing oscillations or vibrations for laundry purposes

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US (1) US2623376A (en))
BE (1) BE489952A (en))
CH (1) CH275400A (en))
DE (1) DE828235C (en))
FR (1) FR989471A (en))
GB (1) GB726774A (en))

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906111A (en) * 1954-03-05 1959-09-29 Gen Motors Corp Washing machine
US3034520A (en) * 1959-01-14 1962-05-15 American Sterilizer Co Surgical instrument washer and sterilizer
US3048994A (en) * 1958-01-20 1962-08-14 Welter Otto Washing machines
US5711327A (en) * 1995-10-10 1998-01-27 Fields; John T. System for vibration cleaning of articles including radiators

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928226C (de) * 1952-04-03 1955-05-26 Adolf Gerlach Schallwaschgeraet
DE1033941B (de) * 1953-07-15 1958-07-10 Procedes Tech Soc D Expl Des Elektromagnetischer Schwingungserzeuger
DE1043286B (de) * 1953-11-24 1958-11-13 Enzinger Union Werke Ag Im Tonbereich schwingende und mit Durchbruechen versehene Platte zum Dispergieren von faserhaltigen Stoffen
DE1120648B (de) * 1956-11-08 1961-12-28 Hans Norkus Dipl Ing Geschirrspuelmaschine
DK150679B (da) * 1975-07-04 1987-05-25 Sven Karl Lennart Goof Apparat til fjernelse af materialebelaegninger i det indre af en beholder
DE4308552A1 (de) * 1993-03-17 1994-09-22 Branson Ultraschall Vorrichtung zum Reinigen und/oder Oberflächenbehandeln von Werkstücken

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597826A (en) * 1919-03-29 1926-08-31 Tyler Co W S Apparatus for screening materials
FR691392A (fr) * 1929-02-25 1930-10-21 Dispositif de lavage
DE577730C (de) * 1931-04-14 1933-06-03 Edmund Renz Staubsauger
US2138051A (en) * 1933-06-02 1938-11-29 Submarine Signal Co Means for treating liquids
US2407462A (en) * 1943-05-14 1946-09-10 Whiteley Edward Oldroyd Supersonic treatment of fluid masses
US2468550A (en) * 1944-10-27 1949-04-26 Motorola Inc Method of and apparatus for cleaning by ultrasonic waves

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1597826A (en) * 1919-03-29 1926-08-31 Tyler Co W S Apparatus for screening materials
FR691392A (fr) * 1929-02-25 1930-10-21 Dispositif de lavage
DE577730C (de) * 1931-04-14 1933-06-03 Edmund Renz Staubsauger
US2138051A (en) * 1933-06-02 1938-11-29 Submarine Signal Co Means for treating liquids
US2407462A (en) * 1943-05-14 1946-09-10 Whiteley Edward Oldroyd Supersonic treatment of fluid masses
US2468550A (en) * 1944-10-27 1949-04-26 Motorola Inc Method of and apparatus for cleaning by ultrasonic waves

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906111A (en) * 1954-03-05 1959-09-29 Gen Motors Corp Washing machine
US3048994A (en) * 1958-01-20 1962-08-14 Welter Otto Washing machines
US3034520A (en) * 1959-01-14 1962-05-15 American Sterilizer Co Surgical instrument washer and sterilizer
US5711327A (en) * 1995-10-10 1998-01-27 Fields; John T. System for vibration cleaning of articles including radiators

Also Published As

Publication number Publication date
BE489952A (en))
GB726774A (en) 1955-03-23
FR989471A (fr) 1951-09-10
CH275400A (de) 1951-05-31
DE828235C (de) 1952-01-17

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