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51. 发明专利

JP2000296053A RICE COOKER 失效
公开(公告)号：JP2000296053A
公开(公告)日：2000-10-24
申请号：JP10626399
申请日：1999-04-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANO MASATO , KUBO MASAFUMI , FUJITA TOSHIHIRO , KOYAMA MASAHIRO , YAMASHITA KOICHIRO
IPC分类号： A47J27/00 , A47J36/38
摘要： PROBLEM TO BE SOLVED: To provide a rice cooker of high heat insulating performance by a heat-insulating program corresponding to the quantity of cooked rice to be heat-insulated and room temperature. SOLUTION: The rice cooker is composed of a main body 1, a pot 2 housed in the main body 1 in a detachable manner, a heating means 4 provided in the main body 1 for heating the pot 2, and a lid 5 covering the opening part of the upper surface of the main body 1 and pivotally supported to be freely openable and closable. The lid 5 is provided with a steam port 18 for discharging steam at the time of cooking rice, a blowing passage 44 communicated into the pot 2 via a blowing port over the pot 2, and a blower on the side of the pot 2 of this passage 44. Cooked rice is heat-insulated according to a heat-insulating program matching with the quantity of the cooked rice by a weight sensor for measuring the quantity of the cooked rice to be heat-insulated and is heat-insulated according to the heat-insulating program matching with the room temperature by a room temperature sensor for measuring the temperature of atmosphere to obtain satisfactory heat-insulating performance.

52. 发明专利

JP2000166759A RICE COOKER AND METHOD FOR PRINTING WATER LEVEL LINE THEREFOR 失效
公开(公告)号：JP2000166759A
公开(公告)日：2000-06-20
申请号：JP34287198
申请日：1998-12-02
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NISHIDA TAKASHI , OHASHI HIDEYUKI , SANO MASATO , SHINABE AKIHIRO
IPC分类号： A47J27/00
摘要： PROBLEM TO BE SOLVED: To improve visibility of a water level line and enable easy water level adjustment by printing a continuous water level line in a wide range within a fluororesin coat layer in the periphery of the inner side surface, and further varying the color of the water level line by each water level line. SOLUTION: The outer surface of a rice cooker 1 obtained by press-forming aluminum material is finished with anodic oxide coating and the inner surface thereof is coated with fluororesin. The fluororesin coat is obtained by roughening the surface made of aluminum by blasting, then applying fluororesin and primer containing an adhesive component and a pigment, and further applying a top coat of fluororesin on the upper layer thereof. As the water level line 2 is printed on the primer layer after application of primer and drying, it is positioned between the primer layer and the top coat. Further, figures and characters 3 for adjusting the water quantity according to the amount of polished rice in boiling the rice are similarly positioned between them, and the continuous water level line 2 is printed extending over the whole periphery outside the display part of the figures and characters 3.

53. 发明专利

JPH1199062A RICE COOKER 失效
公开(公告)号：JPH1199062A
公开(公告)日：1999-04-13
申请号：JP26313697
申请日：1997-09-29
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YAGI MASATOSHI , KOYAMA MASAHIRO , SANO MASATO
IPC分类号： A47J27/00
摘要： PROBLEM TO BE SOLVED: To prevent rubbing sound generated when a hinge spring is twisted and rubbed against a hinge shaft by fixing the hinge shaft for freely openably and closably and pivotally supporting the lid body of a rice cooker, energizing the lid body to be opened by the plural number of the hinge springs and arranging a sleeve between the hinge shaft and the hinge spring. SOLUTION: The hinge shaft 24 for freely openably and closably and pivotally supporting the lid body 23 at one side of a rice cooker main body is fixed on an upper frame 22 attached to the upper surface opening part of the rice cooker main body and lid-opening energizing force is supplied to the lid body 23 at al-l times by the hinge spring 37 whose one side is fixed inside the lid body 23 and other side is abutted to the upper frame 22. The hinge spring part of the upper frame 22 is constituted of the hinge springs 37 for which the sleeve is inserted to the hinge shaft 24, the hinge shaft 24, the inner diameter of the sleeve, the outer diameter of the sleeve and the inner diameter of the hinge spring 37 are set to a fixed clearance, contact at the time of turning the lid is prevented and silencing is performed. Also, when the end part for insertion with a locking hole 36 of the hinge spring 37 is inserted, it is inserted along a chevron inclination 35 and assembly is easily performed.

54. 发明专利

JPH10201608A ELECTRIC RICE COOKER 失效
公开(公告)号：JPH10201608A
公开(公告)日：1998-08-04
申请号：JP728197
申请日：1997-01-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANO MASATO , TANIGUCHI SEIICHI , TANAKA ATSUSHI , SATO SHINICHI , ARIHISA SHIGERU
IPC分类号： H05B6/12 , A47J27/00
摘要： PROBLEM TO BE SOLVED: To eliminate a blowing fan for cooling a switching element and reduce the noise by controlling an inverter circuit according to the output of a room temperature sensor for detecting the ambient temperature near a regenerative heat skin thermally conductively connected to the switching circuit of the inverter circuit. SOLUTION: When an electric rice cooker is electrified, an inverter circuit 30 is driven through a switching element 31, and a high frequency current is supplied to a heating coil 25, and rice cooking is performed by the heating of an inner pan 24. The heat generated by the switching element 31 is diffused to a regenerative heat skin 32, and the heat not stored when a certain fixed quantity of heat is imparted is released to the air. A support base 40 having an enclose 41 for surrounding a room temperature sensor 50 is mounted near the regenerative heat skin 32. Thus, the heat is stored around the room temperature sensor 40, so that the highest temperature in the second rice cooking never exceeds the breakage temperature of the switching element 31, and the inverter circuit 30 is controlled according to the output of the room temperature sensor 50.

55. 发明专利

JPH10108785A INDUCTION HEATING TYPE RICE COOKER 失效
公开(公告)号：JPH10108785A
公开(公告)日：1998-04-28
申请号：JP26427796
申请日：1996-10-04
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TANIGUCHI SEIICHI , SATO SHINICHI , TANAKA ATSUSHI , ARIHISA SHIGERU , SANO MASATO
IPC分类号： H05B6/12 , A47J27/00
摘要： PROBLEM TO BE SOLVED: To realize optimum rice cooking without using a cooling fan. SOLUTION: An induction heating type rice cooker is provided with a heating coil 8 receiving the output of an inverter part 4, an internal pot 9 induction- heated by the heating coil 8, a temp. detection part 11 detecting the temp. of a switching element and an inverter driving part 13 driving the inverter part 4 by receiving the driving permission signal of the inverter from a control part 12. If the detected temp. is not less than a prescribed value when a rice cooking starting signal from a user is originated from a key input part 1 at the time, rice cooking is not started.

56. 发明专利

JP2002209733A ELECTRIC RICE COOKER 失效
公开(公告)号：JP2002209733A
公开(公告)日：2002-07-30
申请号：JP2001004675
申请日：2001-01-12
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANO MASATO , FUJITA TOSHIHIRO , KOYAMA MASAHIRO
IPC分类号： A47J27/00
摘要： PROBLEM TO BE SOLVED: To restrain the deformation of an outer lid for an electric rice cooker. SOLUTION: An outer lid 17 comprises a U-shaped or ring-shaped metal reinforcement plate 25 on the lower surface thereof.

57. 发明专利

JP2001321265A RICE COOKER 失效
公开(公告)号：JP2001321265A
公开(公告)日：2001-11-20
申请号：JP2000142834
申请日：2000-05-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANO MASATO , KOYAMA MASAHIRO
IPC分类号： A47J27/00
摘要： PROBLEM TO BE SOLVED: To prevent the outer surface of the inner pot of a rice cooker from being damaged or scraped off by the abrasion when the pot is taken out of the main body of the rice cooker to wash rice in a stainless sink, etc. SOLUTION: Plural projections 16 projecting from the bottom of the pot 15 are disposed in the pot 15 of the rice cooker. Therefore, the electromagnetic inducting outer surface of the pot 15 is prevented from being damaged, deformed, or scraped off, so that the stable electromagnetic induction heating can be achieved.

58. 发明专利

JP2001252182A ELECTRIC RICE COOKER 失效
公开(公告)号：JP2001252182A
公开(公告)日：2001-09-18
申请号：JP2000064909
申请日：2000-03-09
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： OYA HIROSHI , KUBO MASAFUMI , SANO MASATO
IPC分类号： A47J27/00
摘要： PROBLEM TO BE SOLVED: To increase the substantial heating power of a rice cooker and improve the taste and flavor of cooked rice by further reducing the loss of high frequency current at the time of induction heating and increasing the efficiency of the rice cooker, and to miniaturize the housing of a cooling structure by reducing the burden on the cooling structure. SOLUTION: An electric conductor 18A is coated with an insulating layer 18B and further with a fused layer 18 to form a wire 18. Plural wires 18 are twisted to form a first litz wire 19, and plural first litz wires 19 are twisted to form a second litz wire 20. Further, the second litz wires 20 are wound up from the center in order in a spiral to form a heating coil.

59. 发明专利

JP2001169904A RICE COOKER 失效
公开(公告)号：JP2001169904A
公开(公告)日：2001-06-26
申请号：JP35724399
申请日：1999-12-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SANO MASATO , KUBO MASAFUMI , KOYAMA MASAHIRO
IPC分类号： A47J27/00
摘要： PROBLEM TO BE SOLVED: To suppress the electric power consumption during rice cooking and during heat insulating. SOLUTION: An inner vessel 11 of a double structure having a vacuum chamber is disposed on the outside of a protective frame, by which the release of the heat quantity in a pan to the outside is averted and the power consumption during rice cooking and during heat insulating may be suppressed. Since the release of the heat quantity in the pan to the outside is averted, the temperature of the body or the like at the contour of the rice cooker may be lowered and consequently the contour of the rice cooker and the vacuum inner vessel 11 may be closer to each other and the more compact rice cooker may be realized.

60. 发明专利

JP2000296052A RICE COOKER 失效
公开(公告)号：JP2000296052A
公开(公告)日：2000-10-24
申请号：JP10626299
申请日：1999-04-14
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： FUJITA TOSHIHIRO , KUBO MASAFUMI , SANO MASATO , YAMASHITA KOICHIRO
IPC分类号： A47J27/00 , A47J36/38
摘要： PROBLEM TO BE SOLVED: To suppress the deterioration of cooked rice by providing a blow passage in a lid body communicating with the blow passage port of the lid body, arranging a blower for blowing air into a pot through the blow passage and providing a lid opening/closing detecting means in the lid body. SOLUTION: The fan part 27 of the blower 26 is pivotally supported between a fan case and an outer lid cover so as to be freely rotatable at the side of a heat radiation board on the lower surface of the outer lid cover in communication with the blow port 34 arranged in the lid body. Then the lid is opened after cooking rice so that a float is moved. When a lid opening state is detected by a switch being the lid opening/closing detecting means, the driving of the blower 26 is stopped. Besides, a lid opening time or lid opening times during heat insulation are detected by the switch, the driving time of the blower 26 is controlled by the length of the lid opening time, the quantity of outer air to be supplied into the pot is controlled, moisture in the pot is prevented from being removed too much and dew condensation is prevented.

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