EP2455673A1 - Method for operating a cooking device and cooking device - Google Patents

Abstract

The method involves exhausting vapor from the food and not from the cooking space (2), at the beginning of cooking operation of microwave oven (1) after a predetermined time period. The predetermined time period for two types of cooking modes is equaled, while the predetermined time is fixed. An independent claim is included for cooking appliance.

Description

The invention relates to a method for operating a cooking appliance, in particular Haushaltsgargeräts, with a cooking chamber, wherein at the beginning of a cooking operation vapors is not removed from the cooking chamber and is discharged only after a predetermined period of time. The invention further relates to a cooking appliance, in particular Haushaltsgargerät, with a cooking chamber, with a Wrasenabfuhreinrichtung for removing vapors from the oven and with a timed activation device for selectively activating and deactivating the Wrasenabfuhreinrichtung.

DE 101 28 369 A1 is based on a cooking appliance with at least one heating unit, via which a cooking chamber can be heated, and with at least one steam fan, of which at least one parameter is controllable via a control unit to different characteristic values t ₁ t ₂ , t _{3 as} a function of a selected cooking mode. In order to provide a cooking appliance with a particularly flexible and exact control of the steam blower with simultaneously low design effort, it is proposed that at least one characteristic value t ₁ , t ₂ , t ₃ is stored in an electronic storage unit. For this purpose, a switch-on time t of the Wrasenlüfters, ie a period of time from the beginning of a selected control elements on cooking operation to the start of the Wrasenlüfters via a control unit depending on the selected Garbetriebsart on different Einschaltzeifinerte t _1; t ₂ , t ₃ controlled, wherein the Einschaltzeifinerte t _1; t ₂ , t ₃ are stored in an electronic memory unit, in an EEPROM. In a Garbetriebsart with the heating coil or when grilling the Wrasenlüfter is eg at a Einschaltzeitwert t ₁ of 3 minutes, in a Garbetriebsart with heating elements or baking and frying at a Einschaltzeitwert t ₂ of 8 minutes and a Garbetriebsprogramm for a cooking operation started a closed cooking vessel at a switch-on time t ₃ of 10 minutes. Essentially, in the various types of cooking, the steam ventilator always switches on at the same amount of vapor, which has previously been determined experimentally, and in one embodiment always operates at the same speed.

DE 101 61 184 A1 relates to a method of operating a cooking oven in which the intensity of its aeration is controlled in dependence on predetermined process data of a selected recipe. In addition, concerns DE 10161184 A1 a corresponding one Cooking oven. In this case, the intensity of the ventilation can be derived from a predetermined temperature-time profile of the recipe and / or a predetermined moisture-time profile of the recipe. It is also possible to associate the recipe with a predetermined aeration-time profile. In this case, the intensity of the ventilation can be controlled, for example, via the opening degree of a flap or orifice arranged in a vapor extraction duct and / or via the rotational speed of a vapor suction blower. The oven may have a memory. The memory contains per recipe at least one predetermined process profile such as a temperature-time course and optionally a moisture-time course and / or a ventilation intensity-time course. Derivation rules are stored in the memory in order to derive a ventilation intensity-time profile from a process profile, for example a temperature-time profile and / or a moisture-time profile. The desired moisture-time curve can be approximated by measuring the moisture accumulation during cooking by means of a moisture sensor and adjusting it accordingly and / or specifically supplying moisture.

It is the object of the present invention to provide a particularly inexpensive possibility for energy-saving operation of a cooking appliance without a marked deterioration of cooking results of typical dishes.

This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.

The object is achieved by a method for operating a cooking appliance with a cooking chamber, wherein at the beginning of a cooking operation vapors is not removed from the cooking chamber and is discharged only after a predetermined period of time. The predetermined period of time is a fixed time period which is the same for at least two cooking modes. The use of the fixed time period considerably simplifies an implementation of a controlled vapor discharge, for example by dispensing with an individual determination of the time duration for different boundary conditions when operating in one of the at least two cooking modes. It has surprisingly been found that a quality of cooking results for a wide selection of food and cooking modes can be maintained even without a variation of the time until the activation of the Wrasenabfuhr. In addition, it is possible to dispense with sensors for determining the time duration, for. B. on a humidity sensor.

The cooking appliance is preferably a household cooking appliance, in particular an oven, e.g. with an oven and / or microwave functionality.

It is an embodiment that the at least two cooking modes include a bottom heat mode, a top heat mode and / or a recirculation mode. In this case, the household cooking appliance is in particular an oven, in particular an oven. Thus, if the cooking appliance is operated with an activated bottom heat radiator, an activated top heat radiator and / or a circulating air heating, the vapor is removed only after the same fixed predetermined period of time.

The circulating air heating may e.g. have a rear side, provided with a fan ring heater.

It is a development that the at least two cooking modes can include a side heater mode.

It is yet another embodiment that the at least two cooking modes comprise a microwave mode. The household cooking appliance can, for example, a microwave oven or a combined oven / microwave oven. It has surprisingly been found that good cooking results in compliance with the fixed period of time also for the microwave mode.

The cooking modes can in particular differ by activating different radiators and / or radiator combinations.

It is yet a further embodiment that the fixed predetermined period of time is the same for all Garbetriebsarten the cooking appliance, fixed predetermined period of time. In other words, the fixed period of time is independent of a selected cooking mode. This results in a particularly inexpensive design with good cooking results for the vast number of common foods.

Alternatively, one or more operating modes may either use a variable period of time until activation of the vapor discharge, eg program-controlled or sensor-controlled, or use another fixed time until activation of the vapor discharge.

It is an embodiment that the at least two cooking modes do not include flat grilling. In the "flat grilling" operating mode, only the upper heat radiator is activated, with a substantially maximum power.

It is a special embodiment that the fixed predetermined period of time is one for all Garbetriebsarten the cooking appliance except the flat grilling same, fixed predetermined period of time. The fixed period of time for the flat grilling can be in particular zero, that is to say that in the case of flat grilling, no delayed vapor discharge is activated, but the vapor is removed directly.

The exception of the flat grill may also be extended to other types of grill, e.g. a convection grilling.

It is also an embodiment. that the fixed period of time is at least five minutes. This can be a significant energy savings are possible.

It is also an embodiment. that the fixed period of time is not more than fifteen minutes. This prevents that such an amount of moisture or moisture in the cooking space can accumulate that it deteriorates a cooking result noticeably. Too much moisture may e.g. cause the food to not bake, the window fogging and / or drops falling on the floor.

It is a development that the fixed period of time is between nine minutes and twelve minutes. This choice improves the energy savings and allows a good cooking result with an even higher number of meals. It is a special development that the fixed duration of time is about ten minutes, which represents a particularly good compromise between the cooking result and the energy savings. In particular, for an improved energy saving, the fixed period of time may be approximately between twelve minutes and fifteen minutes.

It is also an embodiment that the cooking operation is controlled by means of a cooking program. It follows that the fixed period of time can also be used for different cooking programs. However, the method can also be used in manual operation of the cooking appliance.

It is also an embodiment that the cooking appliance is operated in a pyrolysis mode (cleaning mode), wherein fumes or heated air is not discharged from the cooking chamber or the Wrasenabfuhr is disabled. The pyrolysis mode is not a garbetriebartsart and requires a substantially permanently closed cooking chamber.

It is a further development that the use of the permanently predetermined period of time can not be changed and / or deactivated by a user.

The object is also achieved by a cooking appliance, in particular Haushaltsgargerät, with a cooking chamber, with a Wrasenabfuhreinrichtung for removing vapors from the oven and with a timed activation device for selectively activating and deactivating the Wrasenabfuhreinrichtung. The cooking appliance is set up to carry out the method. The timed activation device may e.g. be a central control unit of the cooking appliance.

The cooking appliance may in particular be an oven. In particular, in the presence of a microwave mode, the cooking appliance may be a dedicated microwave oven or an oven / microwave oven combination.

Fig.1

zeigt ein Ablaufdiagramm eines erfindungsgemäßen Verfahrens; und

Fig.2

zeigt ein erfindungsgemäßes Haushaltsgargerät.

In the following figures, the invention will be described schematically with reference to an embodiment schematically.

Fig.1

shows a flowchart of a method according to the invention; and

Fig.2

shows an inventive Haushaltsgargerät.

Fig.1 shows a method for operating a cooking appliance, for example a Haushaltsgargeräts 1 as in Fig.2 shown, wherein to prepare the Garbetriebs a first procedural step S1 a cooking chamber 2 of Haushaltsgargeräts 1 has been equipped with food to be treated.

During the first process step S1 at the beginning of a cooking operation (in a first cooking section, starting at an initial time t = 0), the cooking chamber is heated and the steam discharged from the food is not removed from the cooking chamber. As a result, the cooking chamber can be heated faster and / or operated with a lower energy input, which allows energy savings. The selection and / or initiation of the cooking operation can be program-controlled or manual.

Only after a fixed predetermined period of time tu has elapsed, the vapor is removed in a subsequent second method step S2, that is, at a activation time t = tu a Wrasenabfuhr is activated. This can u.a. a moisture in the cooking chamber can be reduced, which could affect a cooking result at too high a value. At a time t = te, the cooking operation (manual or program-controlled) is stopped or ended.

This method is performed with the same fixed time duration or activation time t = tu for at least two cooking modes. For an exemplary case, the method is performed with the same value of tu if at least one bottom heat mode and / or one top heat mode is enabled. It is advantageous in terms of energy saving with a particularly simple design of the household appliance, when all the cooking modes (for example, additionally a recirculation mode, a grilling mode, a covered cooking vessel operating mode) are operated with the same fixed predetermined time tu.

If the household cooker is a microwave oven or a microwave combination appliance, e.g. a combined oven / microwave oven, the method may be performed in a development with the same value of tu, if at least one microwave mode is activated.

It has been found that the duration tu and the corresponding activation time t = tu are particularly preferably about 10 minutes, even for different, especially for household cooking appliances typical, cooking space volumes, eg 44 liters or 68 liters.

Fig.2 shows a Haushaltsgargerät in the form of an oven 1. The oven 1 is to carry out the in Fig.1 set up for this purpose and has a cooking chamber 2, which is connected via an optionally activatable and deactivatable Wrasenabfuhreinrichtung 3 (vapor outlet) for the removal of vapor W with an exhaust duct 4. The activation and deactivation of the Wrasenabfuhreinrichtung 3 is done by means of a control device 5, which serves as a timed activation means. During the first method step S1, the vapor removal device 3 is deactivated and is activated only at the time t = tu, at which the second method step S1 also begins.

The cooking chamber 2 can be heated here either by means of a bottom heat radiator 6, a top heat radiator 7 and / or a circulating air radiator 8. The radiators 6, 7, 8 can be activated by means of the control device 5.

The Wrasenabfuhreinrichtung 3 may have a Wrasenlüfter with a constant or a variably adjustable speed.

Of course, the present invention is not limited to the embodiment shown.

LIST OF REFERENCE NUMBERS

1

oven

2

oven

3

Wrasenabfuhreinrichtung

4

exhaust duct

5

control device

6

Bottom heat radiator

7

Top heat radiator

8th

Convection radiator

S1

step

S2

step

W

vapors

Claims (10)

Method (S1, S2) for operating a cooking device (1), in particular Haushaltsgargeräts, with a cooking chamber (2), wherein at the beginning of a cooking operation vapors (W) is not discharged from the cooking chamber (2) (S1) and only after a predetermined Duration (tu) is dissipated (S2),
characterized in that
the predetermined time period (tu) is a fixed time period which is the same for at least two cooking modes. Method (S1, S2) according to claim 1, characterized in that the at least two cooking modes comprise a bottom heat mode, a top heat mode and / or a recirculation mode. Method (S1, S2) according to one of the preceding claims, characterized in that the at least two cooking modes comprise a microwave mode. Method (S1, S2) according to one of the preceding claims, characterized in that the fixed predetermined time period (tu) is a fixed time duration (tu) which is the same for all cooking modes of the cooking appliance (1). Method (S1, S2) according to one of claims 2 or 3, characterized in that the at least two cooking modes do not comprise flat grilling. Method (S1, S2) according to claim 5, characterized in that the fixed predetermined time period (tu) is one for all Garbetriebsarten the cooking appliance (1) except the flat grilling same, fixed predetermined time period (tu). Method (S1, S2) according to one of the preceding claims, characterized in that the fixed predetermined period of time (tu) is between 5 minutes and 15 minutes, in particular between 9 minutes and 12 minutes, in particular approximately 10 minutes. Method (S1, S2) according to one of the preceding claims, characterized in that the cooking operation is controlled by means of a cooking program. Method according to one of the preceding claims, characterized in that when the cooking appliance (1) is operated in a pyrolysis mode, vapors (W) is not discharged from the cooking chamber (2). Cooking appliance (1), in particular Haushaltsgargerät (1), in particular oven / microwave oven combination device, with a cooking chamber (2), with a Wrasenabfuhreinrichtung (3) for the removal of vapors (W) from the cooking chamber (2) and with a timed activation device ( 5) for selectively activating and deactivating the Wrasenabfuhreinrichtung (3), characterized in that the cooking appliance (1) for implementing the method (S1, S2) is set up.

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