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`U8005512733A
`
`United States Patent
`
`[191
`
`[11] Patent Number:
`
`5,512,733
`
`Taluk
`t1
`[451Dt
`fPt t
`A
`
`'awae a.
`380 aen:
`
`I'.
`
`301996
`,
`
`[54] COOKER
`
`W5]
`
`Inventors:
`
`:iflkoshéa'l‘zulikgaé50551;: leshigf
`0
`o
`o
`;
`in
`e
`e,
`of Kanagawa. Japan
`
`2193620; 219522; 99f427
`[52] U5. Cl.
`[58]
`Field of Search ..................................... 219.16%. 620,
`21911621, 622, 624, 625, 626, 62?; 991331,
`343’ 427
`
`[731 Assigncc: Mitsubishi Denki Kabushiki Kaisha,
`Tokyo, Japan
`
`[56]
`
`References cued
`U.S. PA'I'ENT DOCUMENTS
`
`.
`[2]] Appl‘ No" 254551
`[22] Filed:
`Jun, 2‘I 1994
`
`Related U.S. Applicafion Data
`_
`_
`_
`[60} Connnuanon-m-pan of Ser. No. 991,534, Dec. 15, 1992.
`abandoned, which is adivisiorl of$cr. No.752,598,Aug. 13,
`3911,9593. No. 5,386,102 which is PCIIIP90i'01636. Dec.
`' F regn A plicafio Prio 1 Data
`[30]
`o 1
`p
`D
`n 3’
`Doc. 14, 1939
`[JP]
`Japan
`:9 1: 333 g:
`japan
`C-
`a
`a?“
`g: 12’ 13:3
`lgl
`film
`Dec- 25' 1989
`[JP] kg:
`Dec: 25: 1939
`[JP]
`Japan
`Dan. 25‘ 1939
`[11:]
`japan
`Jul. 23, 1990
`[113}
`Japan
`Aug. T, 1990
`[IF]
`Japan
`Nov. 28. 1990
`[IF]
`Japan
`
`1-322609
`iiiiiii 11:33:11?
`-------
`‘
`““““ 13:32::
`1—332776
`1332777
`1.332779
`2.193101)
`2-209509
`....... 2—323113
`
`
`
`H0513 film
`
`[51}
`
`Int. (11.5
`
`3,736,220
`4,351,996
`5,070,222
`
`11’1974 Hamden
`9/1932 Kondo clal.
`1231991 Yahav cl.
`:1].
`
`
`
`
`..
`
`2191622
`219,110.49]
`219362]
`
`FOREIGN PATENT DOCUMENTS
`195386
`3.3198?
`Japan.
`”5375
`1J1983
`Japan ‘
`Primary Examiner—1h Hoang
`Attorney, Agent, or Finn—Wolf, Greenfield & Sacks
`[57]
`ABSTRACT
`A cooker in which a receptacle wilh a pot for holding
`ingredients and a heater for induction heating the pol is
`supported by a main unit so that it can be inclined frccly.
`consists of an angle conirol unit which provides driving
`force for inclining the receptacle, aconLrollcr for controlling
`the angle control unit, and shall be capable of automatically
`inclining the receptacle and uniformly sautéing the ingredi—
`ems.
`
`23 Claims, 31 Drawing Sheets
`
`27a
`
`20
`
`6
`
`Euro-Pro Exhibit 1006
`27b Euro-Pro Exhibit 1006
`Euro-Pro v. Acorne
`Euro-Pro v. Acorne
`Page 1 of 45
`IPR2014-00182
`Page 1 of 45
`Page 1 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 1 of 31
`
`5,512,733
`
`F161
`
`
`
`
`FIG.2
`
`Page 2 of 45
`Page 2 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 2 of 31
`
`5,512,733
`
`F103
`
`
`
`Page 3 of 45
`Page 3 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 3 of 31
`
`5,512,733
`
`F104
`
`
`“inwnn‘m'un
`
`
`
`Page 4 of 45
`Page 4 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 4 of 31
`
`5,5 12,733
`
`
`
`Page 5 of 45
`Page 5 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 5 of 31
`
`5,512,733
`
`FIGS
`
`CLOCK
`CONTROL
`
`I“
`
`44
`
`CPU
`
`45
`
`41
`
`42
`
`40
`
`INPUT INTERFACE
`
`OUTPUT INTERFACE
`
`d
`'o
`LLIQ
`é
`:3
`$2
`|._
`
`<L
`
`IJ
`I
`
`_|
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`O0
`
`:
`i..-
`
`1
`
`ZOL
`
`.)
`
`Lu
`.1
`(D
`
`2<
`
`
`
`LIMITSWITCH
`
`
`
`ROTARYMOTOR
`
`I
`(I)
`"Z
`3E
`P-
`
`E
`CE
`S
`3
`U CC
`<1
`0:
`LL
`
` MISSIONUNIT
`
`E.
`
`
`
`POWERSWITCH
`
`
`
`SAUTE’EDFOOD
`
`b 0')
`
`47a
`
`471: 128
`
`w(.0
`
`8a
`
`21
`
`266
`
`Page 6 of 45
`Page 6 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 6 of 31
`
`5,512,733
`
`ROTATION
`
`VERSE
`ROTATION
`
`ON
`
`OFF
`
`I
`
`F1 6' 7( a)
`
`LIMIT SWITCH
`
`INFRARED TRANS-
`MISSION UNIT
`
`AN GLE CONTROL
`MOTOR
`
`BRAKE
`
`HEATER
`
`ROTARY OR] VIN G
`MOTOR
`
`
`
`ISAUTEEDFOOD
`
`F I G. 7( b)
`
`ROTATION
`
`LIMIT SWITCH
`A
`INFRARED TRANS- n
`3 MISSION UNIT &IE
`
`ANGLE CONTROL
`In MOTOR
`
`'—
`R VERSE
`ROTATION
`
`Z :
`
`HEATER
`g ROTARY DRIVING
`a MOTOR
`
`III/RSI
`Fl (3. 7( C ) A ON
`LIMIT SWITCH _ w
`
`INFRARED TRANS~
`MISSION UNIT
`ANGLE CONTROL
`MOTOR
`
`BRAKE ’
`HEATER M
`
`ROTARY DRIVING
`MOTOR
`
`
`
`ISAUTEEDFOOD
`
`Page 7 of 45
`Page 7 of 45
`
`

`

`U.S. Patent
`
`Apr. 30, 1996
`
`Sheet 7 of 31
`
`5,512,733
`
`
`
`Page 8 of 45
`Page 8 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 8 of 31
`
`5,512,733
`
`FIGS
`
`OCKCL
`
`CONTROL
`
`42
`
`40
`
`TIMER
`
`43
`
`4:.
`
`4
`
`5
`
`CPU
`
`41
`
`INPUT INTERFACE
`
`MEMORY
`
`OUTPUT INTERFACE
`
`8
`LL
`D
`Lu
`’—
`3
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`
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`46
`
`47a
`
`47b 127
`
`37
`
`8a
`
`2'!
`
`26
`
`33
`
`34
`
`Page 9 of 45
`Page 9 of 45
`
`

`

`U.S. Patent
`
`Apr. 30, 1996
`
`Sheet 9 of 31
`
`5,512,733
`
`KNEE.
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`US. Patent
`
`Apr. 30, 1996
`
`Sheet 10 of 31
`
`5,512,733
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`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 11 of 31
`
`5,512,733
`
`FIG.11(a)
`
`
`
`Page 12 of 45
`Page 12 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 12 of 31
`
`5,512,733
`
`F1612
`
`
`
`Page 13 of 45
`Page 13 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 13 of 31
`
`5,512,733
`
`F1613
`
`
`361
`
`361
`
`Page 14 of 45
`Page 14 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 14 of 31
`
`5,512,733
`
`301
`
`318
`
`3'72
`
`\f\ 3'71
`
`Page 15 of 45
`Page 15 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 15 of 31
`
`5,512,733
`
`n
`
`F1618
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`DETECTION
`
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`I I 1 I I iI
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`TEMPERATURE
`
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`DETECTION
`
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`[I
`
`Page 16 of 45
`Page 16 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 16 of 31
`
`5,512,733
`
`F1019
`
`
`
`306
`
`Page 17 of 45
`Page 17 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 17 of 31
`
`5,512,733
`
`FIG.20( a)
`
`360
`
`FIG.20( b)
`
`361
`
`360
`
`361
`
`Page 18 of 45
`Page 18 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 18 of 31
`
`5,512,733
`
`F1621
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`Page 19 of 45
`Page 19 of 45
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`
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 19 of 31
`
`5,512,733
`
`
`
`Page 20 of 45
`Page 20 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 20 of 31
`
`5,512,733
`
`F1623
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`Page 21 of 45
`Page 21 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 21 of 31
`
`5,512,733
`
`FIG. 25
`
`ROTATION
`
`REVERSE
`ROTATION
`
`ANGLE CONTROL
`UNIT
`
`POT DRIVING
`
`UNIT
`INDUCTION HEAT-
`INO COIL
`
`IEI
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`
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`
`Page 22 of 45
`Page 22 Of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 22 of 31
`
`5,512,733
`
`
`
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`
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`
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`F1626
`
`Page 23 of 45
`Page 23 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 23 of 31
`
`5,512,733
`
`F1027
`
`
`
`Page 24 of 45
`Page 24 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 24 of 31
`
`5,512,733
`
`BUZZER
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`Page 25 of 45
`Page 25 Of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 25 of 31
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`5,512,733
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`Page 26 of 45
`Page 26 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 26 of 31
`
`5,512,733
`
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`Page 27 of 45
`Page 27 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 27 of 31
`
`5,512,733
`
`FIG. 29( C)
`
`t
`I
`TIME _E_,a_._..__.___—__._.
`|
`l
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`I
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`|"|
`ANGLE CONTROL
`OFF
`.
`UNIT
`I
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`.
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`HEATING COIL
`
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`
`FIG. 29(d)
`
`to t
`
`UPPER CONTACT
`DRIVING MOTOR
`LOWER CONTACT
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`DRIVING MOTOR
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`INDUCTION
`___'I—‘—'L_|’— ON
`HEATING COIL
`OFF
`
`Page 28 of 45
`Page 28 Of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 28 of 31
`
`5,512,733
`
`FIG.30
`
`START
`
`COILS TURNED ON
`
`51
`
`ANGLE CONTROL
`
`ROTATION OF
`COOKING POT
`
`52
`
`53
`
`NO
`COILS TURNED 0N-
`
`
`
` COILS TURNED OF
`w 59
`
`88
`
`YES
`
`510
`
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`
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`
`COILS TURNED OFF
`
`512
`
`STOPPING OF
`
`COOKING POT
`
`ANGLE BACK TO
`THE ORIGINAL
`
`S13
`
`514
`
`END
`
`Page 29 of 45
`Page 29 of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 29 of 31
`
`5,512,733
`
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`Page 30 of 45
`03egaP
`54snug
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`US. Patent
`
`Apr. 30, 1996
`
`Sheet 30 of 31
`
`5,512,733
`
`FIG. 32
`
`ROTATION
`
`REVERSE
`ROTATION
`
`
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`UNIT
`POT DRIVING
`
`MEANS
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`Page 31 of 45
`Page 31 Of 45
`
`

`

`US. Patent
`
`Apr. 30, 1996
`
`Sheet 31 of 31
`
`5,512,733
`
`FIG. 33
`
`PRIOR ART
`
`
`
`Page 32 of 45
`
`

`

`5,512,733
`
`1
`COOKER
`
`This application is a continuation application or" prior
`application Scr. No. 0?!991,534, filed on Oct. 15, 1992, now
`abandoned, which is a divisional of application Ser. No.
`071752598, filed on Aug. 13, X991, now U.S. Pat. No.
`5,386,102 which is PCUJP902'01636, filed Sep. 14, 1990.
`
`BACKGROUND OF THE INVENTION
`
`1. Field of the Invention
`
`The present invention relates to a cooker which uses
`induction heating to heat a pot for cooking by sautcing or
`other means.
`
`2. Description of the Prior Art
`Progress in technology which uses induction heating to
`heat magnetic pots has led to the recent development of
`rotary cookers which use induction heating to heat rotary
`pots for automatic sautéing. An electromagnetic cooker
`disclosed in the Japanese Patent Application Laid-Open
`No.63-175375 is such an example, and FIG. 33 shows a
`partial cross-section of the side of the cooker,
`In the F1633, receptacle 2 is mounted on top of main unit
`1, which has a built—in heating power supply, by hinge 3 so
`that it can rotate freely, and supported and fixed by support
`member 4 at a desired inclination angle. Support member 4
`consists of first support lever 4b and second support lever 4c
`which are joined together by pin 44:, and supports and fixes
`receptacle 2 at a desired angle by tightening pin 4a. Pot '1' is
`located at the central part of receptacle 2 in such a way that
`it can be rotated on axis 9 by driving unit 8 at the bottom.
`Induction heating coil 6 is wired around pot 7 via heat
`insulator 5. Lid 10 is screwed onto the top of receptacle 2
`and slip ring 11 is provided between lid 10 and pot 7 to
`prevent ingredients inside pot 7 from escaping from recep-
`tacle 2. In addition, there is small lid 12 on the central top
`of the lid for inserting seasonings. Numbers 13 and 14 are
`control units for rotation speed and heating temperature or
`time, respectively, and 15 is ingredients.
`
`As an example to saute ingredients, using the cooker
`described above, incline receptacle 2 at a desired angle by
`support member 4 and turn on induction heating coil 6 to
`heat the outside of pot 7 while actuating driving unit 8 to
`rotate pot 7. Then. put oil into pot 7 and stop the rotation
`when oil spreads all over put 7. Put ingredients 15 to he
`sauteed into the pot, cover with lid 10 and rotate put 7. Then,
`ingredients 15 are heated, stirred and sauteed within pot 7.
`At a proper time, open small lid 12 to add seasonings and
`cooking is over.
`The conventional electromagnetic cooker is configured
`and used as described above.
`
`(a) However, since receptacle 2 of the above electromag-
`netic cooker is inclined manually, it is not easy to use. There
`is a risk of users’ getting burnt especially when changing the
`inclination angle of the receptacle during operation,
`(b) The pot for holding ingredients is heated by induction
`heating coil 6. However, heating coil 6 consists of only one
`layer, thus providing only a single cooking pattern. There-
`fore, the cooker can do only sautéing, and is thus limited in
`its application range.
`{c} The types of cooking possible with this cooker is
`limited.
`
`(:1) In addition, its heating method is very simple, cooking
`methods and heating times are limited, resulting in a narrow
`application range.
`
`10
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`15
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`20
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`25
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`30
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`35
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`4D
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`45
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`SS
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`65
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`2
`(e) As the rotation speed of the pot is fixed and does not
`change during cooking, it has been diflicult to enhance the
`sautcing performance.
`([3 Induction heating coil 6 is wired between the side and
`the bottom of cooking pot 7 via heat insulator 5 to heat
`ingredients 15 inside the pot from the outside. Therefore,
`when cooking pot '1' is inclined, the top of cooking pot '7
`where there are no ingredients is also heated, resulting in a
`waste of electricity as well as a large size, complex structure
`and high production cost for induction heating coil 6.
`(g) Furthermore, since cooking pot 7 is rotated at a fixed
`speed and heated uniformly, ingredients 15 do not contact all
`parts of cooking pot 7, thus take a long time to cook. In
`addition, induction heating coil 6 is wired between the side
`and the bottom of cooking pot 7 via heat insulator 5 to heat
`ingredients 15 from the outside. Therefore, when cooking
`pot 7 is inclined, the top of cooking pot where there are no
`ingredients 15 is heated, resulting in a waste of electricity,
`and a large size, complex structure and high production cost
`for induction heating coil 6.
`(h) Cooking pot 7 fixed on the tip of rotary axis 9 is
`rotated by actuating driving unit 8. Flange 7a of cooking pot
`7 is rotated while in contact with slip ring 11 fixed on
`stationary lid 10 to seal up the pot. Therefore, too light a
`sealing results in increased friction, the wearing of contact
`surfaces, and the generation of a gap which hinders the
`rotation of cooking pot 7. 0n the other hand, too loose a
`sealing results in soup running out from the gap to the inside
`of receptacle 2. Since cooking pot 7 is fixed, it is difficult to
`clean after cooking and, accordingly, it becomes easily dirty.
`(5) When ingredients are to be sauteed, for instance, users
`must feel
`the temperature of the pot from the ambient
`temperature by putting their hands into cooking pot
`'7.
`Therefore, there is a risk of their getting burnt when they put
`their hands into the pot. Since the temperature of the cooking
`pot is unknown during cooking, heating temperature is
`controlled by the perception and experience of users. As a
`result, they carth go away from the rotary cooker during
`cooking. If they go away from the cooker, the temperature
`of the cooking pot goes too high, resulting in scorching and
`an eventual danger of fire. In addition, when the cooking pot
`is heated continuously without
`ingredients
`inside,
`it
`becomes too hot and damages the receptacle.
`G) Cooking using the electromagnetic cooker is carried
`out as described above. Since the cooking temperature is
`unknown, the timing for adding oil and seasonings and the
`tinting for taking out sautéed food rely on the perception and
`experience of cooks. In addition, if cooks go away from the
`cooker during cooking, ingredients are scorched and there is
`a danger of fire.
`
`SUMMARY OF THE MENTION
`
`(a) The first embodiment overcomes the above problems
`of the conventional cooker. It is therefore an object of the
`first embodiment to provide a cooker which enables users to
`freely change the inclination angle of the pot for holding
`ingredients during cooking without fear of getting burnt.
`(b) It is an object of the second embodiment to provide an
`easy-to—use rotary cooker which enables various types of
`cooking.
`(c) It is an object of the third embodiment to provide a
`rotary cooker which enables users to select the inclination
`angle of the receptacle freely and set a cooking program
`according to type of cooking in order to prepare their desired
`Page 33 of 45
`meals automatically.
`Page 33 of 45
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`5,512,733
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`3
`(d) It is an object of the fourth embodiment to provide a
`rotary cooker which is configured in such a way that the
`inclination angte of the cooking pot artd the heating tem—
`perature range can be changed, enabling users to set cooking
`programs by selecting the inclination angle and heating
`temperature range according to the type of cooking in order
`to automate cooking according to programs.
`(c) It is an object of the fifth embodiment to provide a
`rotary cooker which is equipcd with a device to change the
`rotation speed of the pot for enhanced sautcing performance.
`(f) It is an object of the sixth embodiment to provide an
`economical electromagnetic cooker which is low priced and
`eliminates electricity waste.
`(g) It is an object of the seventh embodiment to provide
`an inexpensive and economical cooker which can change the
`rotation of the cooking pot regularly or at random, and
`which combines concentrated heating by stopping the rota-
`tion and stirringtheating by changing the rotation speed of
`the cooking pot regularly or at random, thus making it ideal
`for cooking that requires strong heat.
`(h) It is an object of the eighth embodiment to provide a
`cooker which can maintain airtightness between the cooking
`pot and the pot lid very easily, and which features high ease
`of operation.
`(i) It is an object of the ninth embodiment to provide an
`easy-to-use cooker which can optimize the temperature of
`the cooking pot for cooking, sauteing for instance. and
`incorporates programs of cooking conditions for various
`types of cooking so that desired meals cart be prepared
`automatically according to the type of cooking.
`-
`(1') It is an object of the lenth embodiment to provide a safe
`and easy-to-use rotary cooker which displays cooking tem-
`peratures and enables anyone to prepare good meals without
`reliance on hist'her perception and experience.
`In order to attain the above mentioned objects, the present
`invention is constructed as follows.
`
`(8.) According to the first embodiment as shown in FIGS.
`1 to 3. a cooker in which a receptacle with a pot for holding
`ingredients and a heater for induction heating the pot is
`supported by a main unit so that it can be inclined freely
`comprises an angle control unit which provides driving force
`for inclining the receptacle to said receptacle and a control-
`ler for controlling the angle control unit.
`(b) According to the second embodiment as shown in FIG.
`7. a cooker in which a receptacle with a pot for holding
`ingredients and a heater for induction heating the pot is
`supported by a main unit so that it can be inclined freely
`comprises an angle control unit which provides driving force
`for inclining the receptacle to said receptacle and a control-
`ler for controlling said angle control unit.
`Induction heating coils which constitute said heater con-
`sist of e coil for heating the bottom of the pot and a coil for
`heating the side of said pot, each of which is equipped with
`input control means and input switching means to heal the
`side or bottom only or both of them simultaneously.
`(c) According to the third embodiment as shown in FIGS.
`4 to 6, a cooker in which a receptacle with a pot for holding
`ingredients and a heater for induction heating the pot is
`supported by a main unit so that it can be inclined freely
`comprises an angle control unit which provides driving force
`for inclining the receptacle to said receptacle, a controller for
`controlling the angle control unit, an angle detector, and a
`memory for storing an angle setting program
`The controller can control the inclination angle of said
`cooking pot so as to make the angle detected by the angle
`
`10
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`15
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`20
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`25
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`3t}
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`35
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`50
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`SS
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`65
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`4
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`detector coincide with the angle preset by the angle setting
`program.
`(d) According to the fourth embodiment as described in
`FIGS. 8 to 10, a cooker in which a receptacle with a pot for
`holding ingredients and a heater for induction heating the
`pot is supported by a main unit so that it can be inclined
`freely comprises an angle control unit which provides driv-
`ing force for inclining the receptacle to said receptacle, a
`controller for controlling the angle control unit, an angle
`detector, a memory for storing an angle setting program and
`activation time setting program, and a timer.
`Said controller can control the inclination angle of the
`receptacle so as to make the angle detected by the angle
`detector coincide with the angle preset by the angle setting
`program, and control the activation time for the heater so as
`to make the time preset by the activation time setting
`program coincide with the time measured by the timer.
`(e) According to the fifth embodiment as shown in FIG.
`11, a cooker in which a receptacle with a pot for holding
`ingredients, a rotation structure for rotating the pot and a
`heater for induction heating the pot is supported by a main
`unit so that it can be inclined freely comprises an angle
`control unit which provides driving force for inclining the
`receptacle to the receptacle. a controller for controlling the
`angle control unit, and a device for changing the rotation
`speed of the pot.
`{0 According to the sixth embodiment as shown in FIGS.
`13 to 15, a cooker in which a receptacle with a pot for
`holding ingredients, a rotation structure for rotating the pot
`and a heater for induction heating the pot is supported by a
`main unit so that it can be inclined freely comprises an angle
`control unit which provides driving force for inclining the
`receptacle to the receptacle, a controller for controlling the
`angle control unit
`The induction heating coil of the induction heater is wired
`around the lowest part of the inclined pot
`(g) According to the seventh embodiment as shown in
`FIGS. 16 to 20, a cooker in which areceptacie with a pot for
`holding ingredients, a rotation structure for rotating the pot
`and a heater for induction heating the pot is supported by a
`main unit so that It can be inclined freely comprises an angle
`control unit which provides driving force for inclining the
`receptacle to said receptacle, a controller for controlling the
`angle control unit, and a device for changing the rotation
`speed of the pot.
`Said device for changing the rotation speed of the pot cart
`heat said ingredients concentratedly with the induction
`heater by stopping intermittently or decelerating the rotation
`of the pot.
`(h) According to the eighth embodiment as shown in FIG.
`21. a cooker in which a receptacle with a pot for holding
`ingredients and a heater for induction heating the pot is
`supported by a main unit so that it can be inclined freely
`comprises an angle control unit which provides driving force ,
`for inclining the receptacle to said receptacle, a controller for
`controlling the angle control unit. and a pot lid with a port
`on the pot.
`(i) According to the ninth embodiment as shown in FIGS.
`22 to 25, a cooker in which a receptacle with a pot for
`holding ingredients and a. heater for induction heating the
`pot is supported by a main unit so that it can be inclined
`freely comprises an angle control unit which provides driv-
`ing force for inclining the receptacle to said receptacle, 3
`controller for controlling the angle control unit, a tempera
`ture detector in contact with the pot for detecting the
`temperature of the pot, and cooking condition control means
`Page 34 of 45
`Page 34 of 45
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`5,512,733
`
`5
`for controlling cooking conditions according to cooking
`programs based on type of cooking for the ingredients and
`temperatures detected by the temperature detector.
`0) According to the tenth embodiment as shown in FIGS.
`26 to 32, a cooker in which a receptacle with a pot for
`holding ingredients and a heater for induction heating the
`pot is supported by a main unit so that it can be inclined
`freely comprises an angle control unit which provides driv—
`ing force for inclining the receptacle to said receptacle, 3
`controller for controlling the angle control unit, a contact
`with a thcrrnoscnsitive device, transport means for bringing
`this contact into contact or out of contact with the outside of
`
`the pot and temperature measurement means for measuring
`the detection temperature of the thermosensitive device.
`The above and other objects. features, and advantages of
`the invention will become more apparent from the following
`description when taken in conjunction with the accompa—
`nying drawings.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`FIG. I is a diagram showing a partial cross-section of the
`front of an embodiment of a cooker according to Jim present
`invention;
`FIG. 2 is a diagram showing a partial cross-section of the
`side of the embodiment;
`FIG. 3 is a diagram illustrating the control circuit;
`FIG. 4 is a diagram showing a cross-section of the
`receptacle of an embodiment of a cooker according to the
`invention;
`FIG. 5 (a) is a diagram showing the side. FIG. 5 (b)
`enlarged diagram showing the angle detection unit, and FIG.
`5 (c) diagram showing a partial cross-section of the front of
`an embodiment of a cooker according to the invention;
`FIG. 6 is a block diagram describing the cooking control
`configuration;
`FIG. 7 (a), (b) and (c) are cooking time charts;
`FIG. 3 (a) is a diagram showing the side of the inclining
`unit of the receptacle and FIGS. 8 (b) and (c) are enlarged
`diagrams showing the key pads of an embodiment of a
`cooker according to the invention;
`FIG. 9 is a block diagram describing the cooking control
`configuration;
`FIGS. 10 (a), (b), (c) and (d) we cooking time charts for
`sauteed, curry and “tempura,“ respectively;
`FIG. 11 (a) is a diagram showing the front of an embodi-
`ment of a cooker according to the invention and FIG. 11 (b)
`is a diagram illustrating changes in rotation speed;
`FIG. 12 is a diagram showing the configuration of an
`embodiment of a cooker according to the invention;
`FIG. 13 is a diagram showing a cross-section of X—X of
`FIG. 12;
`FIG. 14 is an illustration of an induction heating coil;
`FIG. 15 is a diagram showing the key parts of another
`embodiment of a cooker according to the invention;
`FIG. 16 is a diagram of the configuration of an embodi—
`ment of a cooker according to the invention;
`FIG. 17 is a detailed diagram of part of the embodiment
`shown in FIG. 16;
`
`5
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`10
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`15
`
`2t}
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`25
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`30
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`35
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`40
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`45
`
`50
`
`SS
`
`FIG. 18 is a timing chart describing the operation of the
`present invention;
`FIG. 19 is a diagram of the configuration of another
`embodiment of a cooker according to the invention;
`
`65
`
`6
`FIGS. 20 (A) and (B) are diagrams of the induction
`heating coils shown in FIG. 19;
`FIG. 21 is a diagram of the configuration of the embodi-
`ment according to Ihe invention;
`FIG. 22 is a diagram showing a cross-section of the side
`of the embodiment according to the invention;
`FIG. 23 is a diagram showing a cross-section of key parts
`of the embodiment;
`FIG. 24 is a diagram describing the configuration of a
`controller:
`FIG. 25 is a santeing timing chart;
`FIG. 26 is a diagram showing a cross—section of the
`embodiment of a cooker according to the invention;
`FIG. 27 is a diagram of a cross-section of driving means
`(60) shown in FIG. 26;
`FIG. 28 is a block diagram of control means (23) shown
`in FIG. 26;
`FIG. 29 (a) is a timing chart for the driving control of a
`contact of the embodiment, (b) timing chart showing the
`relationship between contact control and pot driving means
`control, (c) timing chart showing the relationship between
`contact control and induction heating coil control, and (d)
`timing chart showing the relationship between contact con-
`trol and the control of pot driving means and induction
`heating coils;
`FIG. 30 is a flow chart of the cooking programs of the
`embodiment;
`FIG. 31is a diagram describing control information on the
`cooking courses of the embodiment;
`FIG. 32 is a timing chart describing the operation of an
`embodiment of a rotary cooker in the case of a santeing
`course; and
`
`FIG. 33 is a diagram showing an example of a conven
`tional electromagnetic cooker.
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENT
`
`FIG. 1 shows a partial crosswsection of the side and FIG.
`2 a partial cross-section of the front of a cooker according to
`the first embodiment.
`
`Numbers I to 7 in the figure refer to the same or
`equivalent parts as those of conventional cookers. Number
`20 is a support. 21 driving motor, 22 first gear, 23 second
`gear, 24 their axis, 25 bracket, 26 brake, 27c and b limit
`switches, 28 control circuit and 29 operation switch.
`As shown in the figure, ingredients are placed inside pot
`7 of the rotary cooker and cooked by rotating pot 7 with a
`rotating unit (not shown in the figure), heating it with
`induction heating coils 6 and inclining receptacle 2, when
`necessary.
`
`In the above rotary cooker according to the invention. a
`receptacle inclining unit consists of an inclination angle
`control unit, an inclination angle retention unit and a con-
`troller. The inclination angle control unit is furnished with
`driving motor 21 fixed on support 2|], first gear 22 coupled
`with the axis of motor 21 and second gear 23 engaged with
`the first gear. Bracket 25 fixed at the bottom of receptacle 2
`is fitted with second gear 23 and can rotate freely on axis 24
`supported by support 20. Therefore, when driving motor 21
`is started, bracket 25 fixed on second gear 23 rotates at the
`same time as first gear 22 and second gear 23 engaged with
`the first gear rotate. receptacle 2 fixed on bracket 25 is
`accordingly inclined around axis 24. That is. receptacle 2 is
`Page 35 of 45
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`5,512,733
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`7
`inclined by the starting of motor 21. In addition, the angle
`retention unit can incline receptacle 2 at a desired angle by
`starting brake 26 when the inclination angle reaches a
`desired angle, and maintain the desired angle. To incline and
`maintain receptacle 2 at a desired angle of inclination,
`controller 28 is actuated by the operation of switch 29.
`Therefore,
`the inclination angle of receptacle 2 can be
`changed during cooking. As shown in FIG. 2, the inclination
`angle of receptacle 2 can be selected freely between hori-
`zontal position a of pot 7 and position d when receptacle 2
`contacts the bottom of main unit 1. For this purpose. main
`unit 1 is furnished with limit switches 27:: and 27!; so that
`when receptacle 2 touches limit switch 27:: or 27b at
`horizontal position a and maximum inclined position d,
`motor 21 stops operation. FIG. 3 shows the control circuit of
`the controller for the above operation.
`In this embodiment, the angle control unit uses gears. but
`ball screws, links and earns can be used instead of gears to
`control the angle of inclination.
`Since the cooker according to the present invention incor-
`porates a receptacle inclining unit which consists of an angle
`control unit for inclining a receptacle at a desired angle, an
`angle retention unit for keeping the receptacle inclined at the
`desired angle and a controller, it allows the receptacle to be
`freely inclined through switch operation during cooker
`operation, thus greatly improving the operational ease of the
`cooker.
`
`FIG. 4 is a diagram showing a cross~section of the
`receptacle of a cooker aceording to the second embodiment.
`In the figure, number 7 is a pot, 220 first coil, 221 second
`coil, 222 first coil input controller, 223 second coil input
`controller, and 224 input switch. The cooker incorporates an
`angle control unit and a controller described in FIG. 33.
`In the figure, a pot rotation driving unit and a receptacle
`inclining unit are omitted.
`As shown in the figure, heating coils consist of the first
`coil for heating the bottom of the pot and the second coil for
`heating the side of the pot. Input switch 24 is used to turn on
`the first or second coil only or both of them.
`As a result, only the first coil is used for roasting meat,
`while only the second coil is used for preparing curry and
`stew. For sauteing vegetables and noodles, it is recom-
`mended to use both of these coils.
`
`In this way, the cooker can change healing methods
`according to type of cooking, resulting in an increased types
`of meals to be prepared by this rotary cooker, expanded
`application range and improved operational ease of the
`cooker.
`
`According to the present invention, the rotary cooker
`incorporates heating means which consist of the first coil for
`heating the pot bottom and the second coil for heating the
`pot side to heat the pot by using either one of them or both
`of them, thus greatly increasing the types of meals to be
`prepared by this rotary cooker and improving its oper