# US 2019/0170361 A1 · Cooking device

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- Number: US 2019/0170361 A1
- Document ID: US20190170361A1
- Status: Published application
- Kind: A1
- Application number: 16/209,202
- Filed: 2018-12-04
- Published: 2019-06-06
- Earliest claimed: 2017-12-04
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Yeonsik HA; Cheong Hwan YU; Jeongdong LEE
- Web page: https://patentgrep.com/patent/US20190170361A1

## CPC

- F24C 7/082: {on ranges, e.g. control panels, illumination}
- A47J 27/004: {with integral electrical heating means (drinking cups with integral heating means A47J36/2466)}
- A47J 27/10: Cooking-vessels with water-bath arrangements for domestic use
- A47J 36/32: Time-controlled igniting mechanisms or alarm devices
- F24C 3/12: Arrangement or mounting of control or safety devices
- F24C 7/08: Arrangement or mounting of control or safety devices
- G05G 1/015: Arrangements for indicating the position of a controlling member (means for continuously detecting pedal position G05G1/38; means for detecting position through tactile feedback G05G5/03)
- G05G 1/105: {comprising arrangements for illumination}
- G05G 5/05: Means for returning or tending to return controlling members to an inoperative or neutral position, e.g. by providing return springs or resilient end-stops (G05G5/28 takes precedence)
- H01H 19/025: {Light-emitting indicators}
- H01H 19/14: Operating parts, e.g. turn knob
- H05B 6/062: {for cooking plates or the like}
- G05G 1/08: Controlling members for hand actuation by rotary movement, e.g. hand wheels
- H01H 2219/062: Light conductor
- F24C: DOMESTIC STOVES OR RANGES (exclusively for solid fuels F24B); DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- A47J: KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- G05G: CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY ("Bowden" or like mechanisms F16C1/10; gearings or mechanisms not peculiar to this purpose F16H; speed changing or reversing mechanisms for gearings conveying rotary motion F16H59/00 - F16H63/00)
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

The present disclosure relates to a cooking device which allows a user to set a cooking temperature and a cooking time quickly and easily. The cooking device according to the present disclosure includes a new type of the control device configured to control cooking processes using the cooking device. The new type of control device, i.e., a knob module, includes a knob which operates in a push-and-turn manner and a knob ring which is coupled to the knob and operates in a click or hold manner, and a display unit formed integrally with the knob ring and capable of displaying a temperature, a heating power level, a time, or other information set according to an operation of the knob or the knob ring. According to the present disclosure, an amount of heat energy supplied through the cooking device and a cooking time of the food may be accurately and precisely adjusted.

## Claims

### Claim 1

A cooking device comprising:
a heating module configured to supply heat energy for cooking food;
a first knob module configured to set a cooking temperature of the food; and
a second knob module configured to set a target cooking time of the food, wherein the first knob module includes:
a first knob to which a plurality of default temperatures is assigned, the first knob rotating in a first direction or a second direction, corresponding to each rotational position, and being setting to have preset intervals;
a first knob ring which returns to an initial position thereof after being moved in the first or second direction and increases or decreases the default temperature set by the first knob by a preset adjustment unit; and
a first display unit which is formed at one side of the first knob ring and displays the cooking temperature, and
the second knob module includes:
a second knob which rotates in the first or second direction and to which a default time corresponding to each rotational position is assigned;
a second knob ring which returns to an initial position thereof after being moved in the first or second direction and increases or decreases the default time set by the first knob by a preset adjustment unit; and
a second display unit which is formed at one side of the second knob ring and displays the cooking time.

### Claim 2 (depends on 1)

The cooking device of claim 1, wherein when a user performs a click operation using the first knob ring or the second knob ring, the default temperature or the default time is increased or decreased by the number of the click operation

### Claim 3 (depends on 1)

The cooking device of claim 1, wherein when a user performs a holding operation using the first knob ring or the second knob ring, the default temperature or the default time is increased or decreased for a duration time of the holding operation.

### Claim 4 (depends on 1)

The cooking device of claim 1, wherein when a user sets a preheating temperature using the first knob module in a state in which a heating operation of the heating module is not started, the heating operation of the heating module is performed until a temperature of the heating module reaches the preheating temperature.

### Claim 5 (depends on 4)

The cooking device of claim 4, wherein when the temperature of the heating module reaches the preheating temperature, a preheating end notification operation using at least one of the first display unit and a audio output unit is performed.

### Claim 6 (depends on 4)

The cooking device of claim 4, wherein when the user sets the cooking temperature using the first knob module after the temperature of the heating module reaches the preheating temperature, a heating operation of the heating module is performed until the cooking time of the heating module reaches a preset target cooking time.

### Claim 7 (depends on 6)

The cooking device of claim 6, wherein when the cooking time of the heating module reaches the target cooking time, a cooking end notification operation using at least one of the first display unit and the audio output unit is performed.

### Claim 8 (depends on 4)

The cooking device of claim 4, wherein when the user does not set the cooking temperature until a preset waiting time passes after the temperature of the heating module reaches the preheating temperature, the heating operation of the heating module is maintained on the basis of the preheating temperature until the cooking time of the heating module reaches the preset target cooking time.

### Claim 9 (depends on 1)

The cooking device of claim 1, wherein when a user does not set the target cooking time using the second knob module, the target cooking time is set to a preset default time limit.

### Claim 10 (depends on 4)

The cooking device of claim 4, wherein when the user sets the preheating temperature lower than a current temperature of the heating module before the temperature of the heating module reaches the preheating temperature, the temperature of the heating module is regarded to have reached the preheating temperature.

### Claim 11 (depends on 1)

The cooking device of claim 1, wherein the cooking time of the heating module is measured on the basis of a preheating start time or a cooking start time.