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
  • A47J37/00—Baking; Roasting; Grilling; Frying
  • A47J37/12—Deep fat fryers, e.g. for frying fish or chips
  • A47J37/1204—Deep fat fryers, e.g. for frying fish or chips for domestic use
  • A47J37/1209—Deep fat fryers, e.g. for frying fish or chips for domestic use electrically heated
• • 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
  • A47J37/00—Baking; Roasting; Grilling; Frying
  • A47J37/12—Deep fat fryers, e.g. for frying fish or chips
  • A47J37/1266—Control devices, e.g. to control temperature, level or quality of the frying liquid

Definitions

• the present invention relates to the general technical field of electric cooking appliances comprising a removable cooking tank and relates more particularly to thermal protection means.
• the invention relates to cooking appliances with a removable tank, the heating power of which enables the food materials placed in the tank to be brought to temperatures greater than or equal to 140 ° C.
• the invention relates in particular to fryers.
• PRIOR ART Patent application WO 96/05761 describes an electrical appliance for heating foodstuffs, in particular for frying, comprising a removable bowl, said appliance being provided with a safety box designed to prevent heating by absence of tank, as well as in situations where the tank correctly installed in the housing of the device contains an insufficient quantity of fat, or even no fat at all.
• This device has the drawbacks of having a large number of mechanical parts and of requiring very precise assembly, there are also numerous interstices conducive to soiling and the ingress of grease or water vapor. This device is therefore expensive and unreliable.
• an electric fryer with a removable tank comprising a tank presence detection device designed to prevent heating in the absence of a tank, formed by a switch whose button is actuated by the tank correctly placed in the device, as well as a safety limiter mounted on a counter-tank behind a sheet intended to come into contact with the tank when it is placed in the housing of the 'apparatus.
• the safety limiter is designed to open the electrical circuit before the fuse is triggered due to heating of the device, when the tank does not contain fat or an amount much lower than the recommended amount. Due to the high power of the heating means, the housing of the appliance and the cover made of plastic material are liable to be damaged if the appliance is started up in the absence of a tank.
• the above-mentioned tank presence detection device makes it possible to avoid these drawbacks.
• This device however has the disadvantage of comprising several mobile mechanical elements, accessible to the user and capable of being moved and / or damaged by the latter during cleaning.
• the object of the invention therefore aims to remedy the various drawbacks listed above and to provide an electric cooking appliance with removable bowl comprising a particularly simple and proven means of thermal protection.
• an electric cooking appliance comprising a housing forming a housing intended to receive a removable tank, heating means in thermal relation with the tank when the latter is disposed in the housing, thermal regulation means, ultimate safety means provided for overcoming the failure of the thermal regulation means, comprising a thermal limiter mounted on a support disposed in the housing, said limiter being capable of being triggered before the means of ultimate safety when the tank is not placed in the housing.
• This construction allows the limiter to detect overheating abnormal occurring in the housing in the absence of a tank.
• This construction offers the advantage of avoiding heating or damaging the device without using a mechanical detector of the presence of a tank formed by safety elements comprising a part that is movable relative to the housing of the device.
• the housing comprises a counter-tank forming the support on which the limiter is mounted, the inner face of the counter-tank defining the housing.
• This construction makes it possible in particular to avoid degradation of the housing when the latter is made of low-grade plastic material having limited temperature resistance.
• the limiter can be reset manually.
• This provision allows the user to become aware of an improper use of the device or of a defect in the control means. Restarting the device requires voluntary action, either on the part of the user when the device has a reset member accessible by the user, or on the part of the after-sales service otherwise.
• the electric cooking appliance shown in FIG. 1 is an electric fryer comprising, in known manner, a housing 1 forming a housing 3 provided for receiving a removable tank 4, heating means 5 in thermal relation with the tank 4 when the latter is arranged in the housing 3, means of thermal regulation 6, ultimate safety means 7 provided to compensate for the failure of thermal regulation means 6.
• the housing 1 is capable of being closed by a cover 9.
• the fryer comprises a thermal limiter 8 mounted on a support 14 disposed in the housing 1.
• the limiter 8 is capable of tripping before the ultimate safety means 7 when the tank 4 is not disposed in the housing 3.
• the thermal limiter 8 is designed to capture the ambient temperature, and is not likely to come into mechanical contact with the tank 4 disposed in the housing 3. This thermal limiter is a reliable and proven component, the mounting on the support 14 is simple.
• the housing 1 comprises a counter-tank 2 forming the support 14, and an outer casing 17 made of an inexpensive plastic material, having a resistance to limited temperature, such as for example polypropylene.
• the inner face of the counter-tank 2 delimits the housing 3.
• the limiter 8 is mounted on the outer face of the counter-tank 2, on the side of the casing 17.
• the limiter 8 can be reset manually.
• the tank 4 placed in the housing 3 is interposed between the heating means 5 and the support 14 on which the limiter 8 is mounted.
• This arrangement makes it possible to limit heating of the support 14 and of the limiter 8 when the tank 4 is present in the housing 3, a fortiori when said tank contains a sufficient quantity of fat, said tank making a thermal screen, and conversely to rapidly trigger the limiter 8 in the absence of a tank 4 in the housing 3, or when the tank 4 is present but insufficiently filled with fat, or even when the tank 4 does not contain any fat at all, thanks to more heating important of the tank 4.
• the tank 4 has at least one oil level mark 15, 16.
• the tank 4 shown in FIG. 1 has a maximum oil level mark 15 and a level level mark. minimum oil 16.
• the limiter 8 is mounted substantially facing at least one of the oil level marks 15, 16 of the tank 4 disposed in the housing 2, and advantageously facing the minimum oil level 16 and below the maximum oil level 15 of the tank 4 disposed in the housing 2.
• the fryer comprises heating means 5 formed by a metal heating block 10 in which is embedded at least one armored heating element 11 associated with own regulation means 12 intended to limit the temperature of said heating block, said heating block being mounted on the counter-tank 2, in the bottom of the housing 3, and being provided to support the tank 4.
• the apparatus according to the present invention operates as follows:
• the thermal regulation means 6 intervene before the limiter 8 is activated.
• the temperature of the support 14 on which the limiter 8 is placed increases faster than during normal operation, even if the thermal regulation means 6 intervene.
• the limiter 8 reacts to this abnormal heating and limits the rise in ambient temperature, before the ultimate safety means 7 are called upon.
• the heating limitation obtained by the action of the limiter 8 avoids excessive heating of the housing 1, which is particularly advantageous when the housing 1 is made of plastic, moreover when the housing 1 is made of low-quality plastic. This temperature limitation also applies to other parts of the product.
• the limitation heating is also interesting in the case where the housing 1 is made of metal, lacquered or not.
• the limiter 8 is capable of being triggered before the ultimate safety means 7 when the tank 4 does not contain fat. Indeed, in the case of an operation without fat, the tank 4 heats up more quickly than in the case of normal operation and the wall of the tank 4 opposite the support 14 heats the latter, which makes it possible to trigger the limiter 8.
• the limiter 8 is capable of being triggered before the ultimate safety means 7 when the tank 4 contains an insufficient quantity of fat.
• insufficient quantity of fat it is necessary to understand an amount of liquid fat or caused to become liquid.
• This insufficient amount of fat rises more quickly in temperature and the tank 4 also rises in temperature.
• the tank 4 heats up more quickly than in the case of normal operation and the wall of the tank 4 opposite the support 14 heats the latter, which makes it possible to trigger the limiter 8.
• the limiter 8 also makes it possible to limit the temperature of the product.
• heating can be envisaged, such as for example heating by infrared radiation, or heating using an armored heating element on which the tank is likely to rest.
• the invention also relates to electric cooking appliances with removable bowl, such as multicookers, comprising heating means with a power greater than or equal to 1300 W.
• Such devices are provided for making fried or braised, browned cooking. , toasted.
• the invention finds its application in the technical field of heating or cooking appliances for food, in particular for the production of fried foods in an oil bath.

Landscapes

• Engineering & Computer Science (AREA)
• Food Science & Technology (AREA)
• Frying-Pans Or Fryers (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=9514574

Family Applications (1)

Country Status (7)

Families Citing this family (10)

Family Cites Families (11)

• 1997
  • 1997-12-09 FR FR9715821A patent/FR2771915B1/fr not_active Expired - Fee Related
• 1998
  • 1998-12-08 EP EP98958984A patent/EP0959751A1/de not_active Withdrawn
  • 1998-12-08 CA CA002279829A patent/CA2279829A1/fr not_active Abandoned
  • 1998-12-08 WO PCT/FR1998/002661 patent/WO1999029219A1/fr not_active Application Discontinuation
  • 1998-12-08 US US09/367,008 patent/US6172339B1/en not_active Expired - Fee Related
  • 1998-12-08 BR BR9807127-0A patent/BR9807127A/pt not_active Application Discontinuation
  • 1998-12-08 AU AU14928/99A patent/AU1492899A/en not_active Abandoned

Non-Patent Citations (1)

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