WO1993022042A1 - Mixeur a ensemble lame ameliore - Google Patents

Mixeur a ensemble lame ameliore Download PDF

Info

Publication number
WO1993022042A1
WO1993022042A1 PCT/US1993/004167 US9304167W WO9322042A1 WO 1993022042 A1 WO1993022042 A1 WO 1993022042A1 US 9304167 W US9304167 W US 9304167W WO 9322042 A1 WO9322042 A1 WO 9322042A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
assembly
blender
blades
rotation
Prior art date
Application number
PCT/US1993/004167
Other languages
English (en)
Inventor
Carl E. Seyerle
Original Assignee
Sunbeam Corporation
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 Sunbeam Corporation filed Critical Sunbeam Corporation
Publication of WO1993022042A1 publication Critical patent/WO1993022042A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00—Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/04—Machines for domestic use not covered elsewhere, e.g. for grinding, mixing, stirring, kneading, emulsifying, whipping or beating foodstuffs, e.g. power-driven
    • A47J43/07—Parts or details, e.g. mixing tools, whipping tools
    • A47J43/0716—Parts or details, e.g. mixing tools, whipping tools for machines with tools driven from the lower side
    • A47J43/0722—Mixing, whipping or cutting tools

Definitions

  • the present invention relates to an improved blade assembly for use in an electric blender of the type widely used for mixing or grinding various substances.
  • Blenders are typically powered by a powerful motor which drives blades which chop and mix the contents of the blender vessel. Most blenders can operate at a range of different speeds. Blenders are typically used for several food preparation tasks. These include ice crushing, corn meal grinding, shredding, juice rendering, liquefying and peanut butter rendering.
  • Agitator assemblies for use in blender assemblies and other appliances are, of course, well known. Examples of known blade assemblies are shown, for example, in U.S. Patent No. 4,071,789 to Ernster et al.; U.S. Patent No. 4,173,310 to Schaeffer; U.S. Patent No. 4,256,265 to Madan; U.S. Patent No. 4,331,300 to Hicks et al. and U.S. Patent No. 4,462,694 to Ernster et al.
  • Figures 1 and 2 show a conventional blender which includes a blender vessel 25, a power unit having a drive shaft 35 and an agitator assembly indicated generally by reference numeral 11.
  • the agitator assembly includes a diaphragm assembly 12, a symmetrical blade assembly 14, and a shaft assembly 16.
  • the shaft assembly 16 includes a blade shaft 30 and socket 32 which are adapted to be supported in bearings in substantial axial alignment.
  • SUBSTITUTE SHEET shaft 30 is formed at its upper end with a noncircular flattened portion and a cylindrical portion.
  • the noncircular flattened portion is adapted to receive the blade assembly 14.
  • the blade assembly 14 comprises four stainless steel cutting, chopping and mixing blades consisting of two upper blades 14a and two lower blades 14b.
  • the blade assembly 14 is symmetrical and all the upper blades 14a are the same size and inclined at the same angle.
  • the central portion of the blade assembly 14 is formed with a non ⁇ circular opening which is adapted to be snugly received on the end of the shaft 30 to establish a driving connection between the shaft 30 and the blade assembly 14.
  • the lower square end portion of the socket 32 is preferably eight sided and mates with a four sided drive shaft 35 of the power unit to which the shaft assembly 12 is detachably connectable.
  • the drive portion 35 is shown separated from its drive connection with the socket 32.
  • the present invention relates to a blender which
  • SUBSTITUTESHEET includes a blender vessel, a blade shaft rotatably supported in the bottom of the blender vessel for rotation about an axis of rotation, a blade assembly supported on the blade shaft for rotation therewith about the axis of rotation and a power unit for driving the blade shaft and blade assembly.
  • the vessel, blade shaft and power unit are of conventional construction.
  • the blade assembly includes an upper blade portion having two or more blades and a lower blade portion having two or more blades.
  • the upper blade portion includes two distinct blade forms.
  • the upper blade portion may also be asymmetric, and the lower blade portion is preferably symmetric.
  • the blades of the upper blade portion are all of the same length, but are inclined at different angles relative to the axis of rotation. At least one of the blades of the upper blade portion is inclined at an angle between 15° and 25° from the axis of rotation and at least one of the other blades of the upper blade portion is inclined at an angle between 40° and 45° from the axis of rotation. More specifically, the first blade is preferably inclined at an angle of 20° from the axis of rotation and the second blade is preferably inclined at an angle of 42° from the axis of rotation.
  • the blade assembly is preferably formed of stainless steel and both the upper blade portion and the lower blade portion may be formed from a symmetrical blank.
  • the present invention is based, in part, on a number of findings of the present inventor.
  • Various blenders were observed in operation to determine why conventional blender constructions typically perform well at one end of the spectrum, but not at the other end of the
  • the blade assembly was. made to maximize the performance in ice crushing.
  • the blade assembly was
  • the optimum configuration to maximize performance and to achieve synergy between the two extremes of function was found to be best met by changing only one component, the upper blade in the agitator assembly.
  • the assembly of the present invention can be used to retrofit and enhance the function of many conventional blenders. With this blade system within the blender agitator assembly, no functions are compromised and the blender provides excellent results across the entire spectrum. Thus, the improved blade assembly of the present invention was developed.
  • This blade assembly is formed of stainless steel and includes a lower, preferably symmetrical, blade portion and an upper blade portion.
  • the upper blade portion includes at least two different blades. The first blade is inclined at a predetermined angle and the second blade is inclined at an angle greater than the angle of incline of the first blade.
  • the upper blade portion is preferably asymmetrical and is formed from a single blank by bending the ends of that blank to different extents.
  • the first one end of the blade portion is preferably inclined at an angle of 42° from the axis of rotation and the other end is inclined at an angle of 20° from the axis of rotation.
  • Fig. 1 is a vertical sectional view through the central axis of a prior art agitator assembly showing the parts in their normal assembled rela ion;
  • Fig. 2 is a top view of the agitator assembly of Fig. 1;
  • Fig. 3 is a vertical sectional view through the central axis of an agitator assembly according to the present invention.
  • Fig. 4 is a side view of the agitator assembly of Fig. 3;
  • Fig. 5 is a perspective view of the agitator assembly of the present invention.
  • Fig. 6 is a side view of the blade assembly of the present invention.
  • Fig. 7 is a top view of the blade assembly of the present invention
  • Fig. 8 is a sectional view of the upper blade assembly of the present invention.
  • Fig. 9 is a plan view of a blank from which the upper blade assembly of the present invention can be formed. Detailed Description of the Drawings
  • the blender of the present invention includes a blender vessel, an agitator assembly and a power unit.
  • the vessel and power unit are conventional and similar to those shown in Fig. 1.
  • the present invention can be constructed by retrofitting a conventional blender with the improved blade assembly disclosed herein.
  • the agitator assembly of the present invention is shown in Figs. 3-5.
  • the agitator assembly is
  • this agitator assembly 11 includes a diaphragm assembly 12, a shaft assembly 16 and a blade assembly 14 which includes a conventional lower blade portion 14B and an upper blade portion 140 which is discussed in detail below.
  • the shaft assembly 16 includes blade shaft 30 and socket 32 which are adapted to be supported in bearings in axial alignment. At the upper end, the shaft 30 is formed with a non-circular flattened portion and a cylindrical portion. The non ⁇ circular flattened portion is adapted to receive the blade assembly 14.
  • the blade assembly shown comprises four stainless steel cutting, chopping and mixing blades.
  • the upper portion 140 of the blade assembly 14 includes the other two blades 140A, 140B. These blades are formed from a single blank, but inclined at different angles. Thus, one blade 140A extends higher and radially inward, but not as far radially outward as the other blade 140B.
  • the central portion of the blade assembly is formed with a non-circular opening which is adapted to be snugly received on the end of the shaft 32 to establish a driving connection between the shaft 30 and the blade assembly.
  • the cylindrical end of the shaft has a large retaining head or the like to retain a retaining washer 34.
  • the socket 32 is adapted to receive a drive portion of the output shaft of the motor or power unit to which the shaft assembly is detachably connected.
  • a ferrule 36 is secured to the upper end of the shaft immediately below the blade assembly.
  • the ferrule 36 has a generally cup-shaped configuration, cylindrical walls, top wall and non-circular opening which is received on the flattened portion of the shaft 30 adjacent the blade assembly.
  • An open space 40 is provided in the assembly for retaining lubricant such as grease.
  • the assembly of the present invention is essentially similar to that of the conventional assembly illustrated in Figs. 1 and 2.
  • the difference, however, is the provision in accordance with the present invention of an improved blade assembly, and more particularly, an upper blade portion 140 which includes two different types of blades.
  • the blade assembly 140 is an asymmetric blade assembly in which the two ends 140A and 140B of the upper blade portion 140 are inclined at different angles as best shown in Fig. 8. By inclining the blade portions 140A, 140B at different angles, two distinct blade forms are provided on the single upper blade portion.
  • An upper blade portion which includes two distinct blade forms is capable of performing two distinct, even opposite, functions well.
  • one blade tip is preferably located radially inward and pointed further upward to stir the calm center of the vortex.
  • the opposite tip is inclined at a lesser angle so as to extend further radially outward and more closely approach the vessel side wall.
  • Fig. 8 shows the currently preferred upper blade construction.
  • the two blades 140A, 140B of the upper blade portion 140 are actually the same length.
  • the blade portions are inclined at different angles a, b from the plane of the blank so that as viewed in, for example, the side view of Fig. 6, one blade 140A appears to be taller than the other blade 140B.
  • the plane of the blank is typically perpendicular to the axis of rotation of the finished blade assembly.
  • the blade portion 140A is inclined at an angle a from the plane of the blank, it is also inclined at an angle 90°- a from the axis of rotation.
  • the blade portion 140A is inclined at a greater angle from the plane of the blank and extends nearly upward to stir the calm center of the vortex.
  • the blade 140B is inclined less from the plane of the blank and extends radially further from the axis of rotation than the other blade 140A to extend the radius of gyration or reach of the upper blade portion 140.
  • the blade assembly should not be too far out of balance as this can lead to excessive unbalanced loads and excessive drain on the motor.
  • the blade 140 should be inclined at an angle a in the range of 65°-75°
  • angles of blade inclination can be varied, but this will alter performance.
  • more than two blades are provided in the upper blade assembly, it is possible to provide a balanced, symmetrical, blade assembly having two highly inclined blades and two less inclined blades. In this way, the desirable results of the present invention could be achieved without using an asymmetric design.
  • One way of manufacturing the blade assembly of the present invention is by forming the upper blade portion from a blank 140 of the type shown in Fig. 9.
  • the blank 140 from which the blade assembly is formed is symmetrical. As indicated in Fig. 8, however, the blade ends of the blank are bent at different angles to provide an asymmetric blade assembly.
  • SUBSTITUTESHEET present invention provides better results across the entire spectrum of blender usage than known agitator assemblies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Food-Manufacturing Devices (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)

Abstract

Mixeur comprenant un ensemble lame (14) amélioré. L'ensemble lame (14) comporte une partie de lame supérieure (140) constituée de deux formes (140A, 140B) de lames distinctes. L'utilisation de deux formes de lames différentes permet d'obtenir de très bons résultats dans des applications normales très diverses. La partie de lame supérieure (140) est préférablement asymétrique mais elle peut être formée à partir d'une ébauche symétrique.
PCT/US1993/004167 1992-05-01 1993-05-03 Mixeur a ensemble lame ameliore WO1993022042A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US87742492A 1992-05-01 1992-05-01
US07/877,424 1992-05-01

Publications (1)

Publication Number Publication Date
WO1993022042A1 true WO1993022042A1 (fr) 1993-11-11

Family

ID=25369936

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/004167 WO1993022042A1 (fr) 1992-05-01 1993-05-03 Mixeur a ensemble lame ameliore

Country Status (2)

Country Link
AU (1) AU4230593A (fr)
WO (1) WO1993022042A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207711A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Elektromotorisch betriebenes Küchengerät zum Zerkleinern von Lebensmitteln
DE102014217241A1 (de) 2014-08-28 2016-03-03 BSH Hausgeräte GmbH Messeranordnung für ein Küchengerät sowie Küchengerät mit einer Messeranordnung
WO2016077424A1 (fr) * 2014-11-11 2016-05-19 Sunbeam Products, Inc. Appareil à ensemble agitateur intégré
US9433323B2 (en) 2013-02-20 2016-09-06 CAB Plastics Ltd. Cutting implement for food processor
US9750373B2 (en) 2014-11-11 2017-09-05 Whirlpool Corporation High-speed blending blade for a food processing appliance
CN107617341A (zh) * 2017-10-16 2018-01-23 陈永石 可改善处理均度的膜组件清洗装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650870A (en) * 1948-07-13 1951-03-07 Oertli Ag T Improvements in or relating to rotatable cutting heads for chopping, mincing, mixingor like machines
GB650869A (en) * 1948-01-15 1951-03-07 Oertli Ag T Improvements in or relating to rotatable cutting heads for machines for comminuting,mixing and stirring substances
AT180670B (de) * 1950-03-18 1955-01-10 Brevet A G Allg Patent Und Lyz Messerkopf zum Zerkleinern, Mischen, Rühren, Verschäumen, Koaguleiren und Durchlüften von Nahrungs- und Genußmitteln in vorzugsweise durch Wasserturbinen angetriebenen Haushaltsmaschinen
US2771111A (en) * 1955-09-30 1956-11-20 Scovill Manufacturing Co Agitator and cutter unit for disintegrating food mixers
US3175594A (en) * 1961-10-23 1965-03-30 Sunbeam Corp Disintegrator and mixer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB650869A (en) * 1948-01-15 1951-03-07 Oertli Ag T Improvements in or relating to rotatable cutting heads for machines for comminuting,mixing and stirring substances
GB650870A (en) * 1948-07-13 1951-03-07 Oertli Ag T Improvements in or relating to rotatable cutting heads for chopping, mincing, mixingor like machines
AT180670B (de) * 1950-03-18 1955-01-10 Brevet A G Allg Patent Und Lyz Messerkopf zum Zerkleinern, Mischen, Rühren, Verschäumen, Koaguleiren und Durchlüften von Nahrungs- und Genußmitteln in vorzugsweise durch Wasserturbinen angetriebenen Haushaltsmaschinen
US2771111A (en) * 1955-09-30 1956-11-20 Scovill Manufacturing Co Agitator and cutter unit for disintegrating food mixers
US3175594A (en) * 1961-10-23 1965-03-30 Sunbeam Corp Disintegrator and mixer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012207711A1 (de) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Elektromotorisch betriebenes Küchengerät zum Zerkleinern von Lebensmitteln
WO2013167487A1 (fr) 2012-05-09 2013-11-14 BSH Bosch und Siemens Hausgeräte GmbH Mixeur
US9433323B2 (en) 2013-02-20 2016-09-06 CAB Plastics Ltd. Cutting implement for food processor
DE102014217241A1 (de) 2014-08-28 2016-03-03 BSH Hausgeräte GmbH Messeranordnung für ein Küchengerät sowie Küchengerät mit einer Messeranordnung
WO2016077424A1 (fr) * 2014-11-11 2016-05-19 Sunbeam Products, Inc. Appareil à ensemble agitateur intégré
US9750373B2 (en) 2014-11-11 2017-09-05 Whirlpool Corporation High-speed blending blade for a food processing appliance
US10136764B2 (en) 2014-11-11 2018-11-27 Whirlpool Corporation High-speed blending blade for a food processing appliance
CN107617341A (zh) * 2017-10-16 2018-01-23 陈永石 可改善处理均度的膜组件清洗装置

Also Published As

Publication number Publication date
AU4230593A (en) 1993-11-29

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