DE102014214832A1 - Home appliance and method for operating a household appliance - Google Patents

Abstract

The invention relates to a household appliance (1) having at least one food receiving space (5), with at least one heating device (13) for heating foods in the at least one receiving space (5) and at least one cooling device for cooling in the food at least one receiving space (5) located food. The cooling device comprises at least one evaporator (6), which is fluidically connectable to at least one sorption element (7). The at least one sorption element (7) is designed to adsorb in a fluidically connected state to the at least one evaporator (6) a working medium evaporating in the at least one evaporator (7). Furthermore, the invention relates to a method for operating such a household appliance (1).

Description

The invention relates to a household appliance, which has at least one receiving space for food. At least one heating device is used to heat foods in the at least one receiving space. Furthermore, at least one cooling device of the household appliance is used for cooling foods in the at least one receiving space. The invention also relates to a method for operating such a household appliance.

The EP 0 990 405 A2 describes a device for cooling and heating food, wherein a receptacle for the food with a closure door is closed. The receptacle is equipped with both a cooling unit and a heater. The cooling unit and the heater can be optionally switched on. With a device for generating steam can also be carried out when heating the food steaming. Furthermore, hot air can be blown into the receptacle via a hot air blower.

By means of such a device, for example, a food to be delivered can be cooled for a long time and then heated at a certain point in time, for example shortly before reaching a delivery destination. However, it is more difficult to quickly cool down a still warm food for subsequent storage in a refrigerator.

Object of the present invention is therefore to provide an improved household appliance of the type mentioned above and a corresponding method for operating a household appliance.

This object is achieved by a household appliance having the features of patent claim 1 and by a method having the features of patent claim 15. Advantageous embodiments with expedient developments of the invention are specified in the dependent claims.

In the household appliance according to the invention, the cooling device comprises at least one evaporator. The at least one evaporator can be fluidly connected to at least one sorption element. Here, the at least one sorption element is adapted to adsorb in a fluidically connected to the at least one evaporator state, a working medium which evaporates in the at least one evaporator. This is based on the knowledge that a very large evaporation cold can be provided in the evaporator during adsorption, that is to say when storing the working medium in the gaseous state into the sorption element. This also happens particularly quickly, so that can be achieved with the evaporator, a particularly fast and short-term cooling.

In particular, when using water as a working medium in the evaporator ice can be generated, which cools the receiving space very quickly within a very short time. By means of such a rapid cooling function or cooling function, foods such as foods or drinks can be cooled very quickly to a temperature desired for this food, for example for subsequent storage in a refrigerator. This is particularly advantageous in the rapid and controlled cooling down of still warm food particles or freshly prepared food, which are intended for storage in the refrigerator, since no loss of quality occurs in such a cooling. In addition, a temperature range in which the activity of microorganisms such as bacteria is greatest, passes very quickly. This leads to a particularly safe cooling of the food.

Even foods that are to be cooled quickly in order to be processed quickly, such as cake bottoms, cakes, pudding and the like can be very quickly and easily bring to the desired, low temperature. Thus, an improved home appliance is created.

If adsorbing the working medium to a solid sorption medium present in the sorption element takes place comparatively slowly, then it is possible to realize a very long-lasting cooling function of the household appliance. Thus, ready-prepared or prepared foods such as cakes and large vessels with desserts or the like can be kept permanently refrigerated or kept fresh. This is particularly advantageous if such food in the refrigerator find no more space.

Furthermore, it is advantageous that the same receiving space can be used both for cooling prepared food and for cooking and reheating. Keeping fresh and warming up or heating food is therefore possible in the same household appliance.

Namely, by means of the heating device of the household appliance, in particular a keeping warm, warming up and preheating of food, but also of crockery can be accomplished. In addition, for example, a low-temperature cooking method can be realized in which food is heated to about 80 ° C and cooked so very gently.

With the household appliance can be implemented preferably further functions. For example, by freezing fresh food or prepared food can be prepared for storage in the freezer. This is based on the insight that slow freezing significantly reduces the quality of food. This is because large ice crystals are formed in the cells of the food, which grow into large, pointed structures due to the slow rate of freezing. Such large pointed ice crystals can mechanically damage the cell walls, thus affecting the structure of the food.

On the other hand, in the case of blast freezing, ie cooling to temperatures below 0 ° C., in particular to temperatures between -15 ° C. and -25 ° C. within a short time, in a few minutes, the product freezes very rapidly. This only forms very small ice crystals. Such small ice crystals scarcely damage the cell walls and hardly cell juice. The structure and appearance of the product are largely retained. Shock freezing is therefore a particularly gentle way to freeze food. In addition, when thawing occurs almost no loss of quality of food.

Freeze-drying can also be realized in the at least one receiving space. Such a dry process preserves as much as possible the original structure, the appearance, the flavorings, the nutritional value, the vitamins and the quality of the food. In addition, freeze-drying guarantees a particularly long shelf life. Freeze-drying can be used in particular for fruits such as berries, as used for cereal mixes.

By means of the at least one heating device, however, it is also possible to realize a function of drying or drying foodstuffs. For example, fruits, vegetables, mushrooms, herbs and the like can be dried so that a user of the household appliance can stock up on these foods for times when the corresponding foods are less readily available fresh. In particular, temperatures of 30 ° C to 70 ° C may be provided for such heating operations as used in drying and dehydration. This makes it possible to preserve food in raw food quality with low heat.

This allows about the production of homemade fruit chips and vegetable crisps of so-called raw food loaves, in which a dough is not baked, but is dried only at low temperature for a long time. Crackers can also be produced by so-called raw baking, ie by drying or drying at temperatures below the temperature intended for baking. In known dehydrating machines, as they are available for private household use, develops a high humidity in the room in which the Dehydrator is used. In addition, this long drying time is accompanied by a comparatively high power consumption of the Dehydrator, and a fan usually provides for an undesirable noise. This can be avoided with the household appliance described here.

As a sorption element, for example, a container filled with a zeolite can be used. The crystalline mineral of zeolite has the property of adsorbing water vapor and incorporating it into its porous structure. In this case, the sorption element releases heat, which in particular can be released into the environment of the household appliance.

In particular, when the container filled with the zeolite has a negative pressure, particularly high levels of water vapor can be sucked in from a water surface in the evaporator particularly quickly. This happens until the zeolite is saturated with water. If the sorption element is then heated and the working medium is desorbed from it, the sorption element can be regenerated.

The favorable for accelerated removal of the evaporating working medium from the evaporator to the sorbent negative pressure in the sorption can be particularly easy to restore the sorbent element. It only needs to be closed a valve (or the like closure device) which is arranged in a line connecting the sorption with the evaporator, as soon as the sorption is regenerated by the heating. Then, as the sorbent element cools, a lower pressure in the sorbent element automatically results than it is in the evaporator.

The domestic appliance preferably comprises at least one condenser, by means of which the working medium released from the at least one sorption element when the at least one sorption element is regenerated can be liquefied. Such a spatial separation of the condenser from the evaporator can ensure that the condensation heat released during condensation or liquefaction of the working medium does not affect the cooling process effected by means of the evaporator. Thus, a particularly high efficiency of the evaporator can be achieved.

Preferably, the at least one condenser is fluidically connected to the at least one evaporator so that the liquefied working medium can easily be returned to the evaporator by means of a pumping device or the like. Thus, the same working medium can be used repeatedly after a respective regeneration of the sorption element. This is especially economical.

As a further advantage, it has been shown that the at least one sorption element is thermally insulated from the at least one receiving space. Then, undesirably much heat is not introduced into the receiving space during regeneration of the sorption element nor during adsorption of the working medium to a sorption medium of the sorption element, ie during cooling of the at least one receiving space by means of the at least one evaporator.

In an analogous manner, it is favorable if the at least one capacitor is thermally insulated from the at least one receiving space. Because even in the liquefaction of the working fluid heat in the form of heat of condensation is released, the entry in the at least one receiving space is not desirable if you want to keep cool in this food.

For example, the at least one sorption element and / or the at least one capacitor can be arranged on a side of the receiving space formed by the user of the household appliance and shielded from the receiving space for thermal insulation by means of an insulating layer. Then the sorption element and / or the capacitor does not interfere, and the heat emitted by the sorption and / or the capacitor heat can be particularly well dissipate in the environment of the household appliance.

For regenerating the at least one sorption element, at least one further heating device may be provided. For example, a heating coil or the like heating device can be integrated into the solid sorption medium of the sorption element, so that a particularly compact design of the sorption element is created with integrated heating device in this.

Preferably, the at least one evaporator is arranged adjacent to a wall bordering the at least one receiving space on the upper side. This is because the fact that the fact that air cooled down at the evaporator sinks into the receiving space can be used particularly well. Additionally or alternatively, the at least one evaporator may be arranged adjacent to at least one side wall of the at least one receiving space.

Likewise, the at least one evaporator can form a lid of the receiving space, wherein access to the receiving space can be created, for example, by folding up the lid. In forming the evaporator as a lid for the receiving space can be particularly easy to ensure thermal insulation between the lid and the lid adjacent walls of the receiving space.

It is furthermore advantageous if the at least one heating device designed for heating the food is arranged adjacent to an underside, facing away from the at least one receiving space, of a bottom bounding the at least one receiving space. Additionally or alternatively, a bottom of the at least one receiving space may be formed by the heating device. Thus, the fact can be exploited that in the receiving space, the heating heat rises, which is accompanied by a particularly efficient use of the provided heating energy.

In a further advantageous embodiment of the invention, the household appliance comprises at least one vacuum unit. By means of the vacuum unit, for example, a negative pressure can be generated in the receiving space. By vacuuming food, many advantages can be achieved. For example, the shelf life of foods can be increased three to five times by vacuuming. In addition, the quality, freshness, nutrients, appearance and taste of the food are largely retained. Even perishable foods such as sausage, meat and fish can be made particularly durable by vacuuming. In addition, the vacuuming, such as coffee beans, allows a particularly aroma-protective storage of the same in the home appliance. The vacuum unit may also be designed to vacuumize food stored in foil bags and, in particular, subsequently to seal the foil bags. Then such vacuum-sealed and sealed foodstuffs can also be stored in a refrigerator protected against aromas.

By vacuuming, a particularly quick marinating of meat or the like can be achieved. Thus, meat can be marinaded within about 20 minutes if there is a vacuum generated by the vacuum unit in a container having the meat and marinade. Vacuum can also be used to achieve a particularly safe and gentle ripening of meat. In addition, food held under vacuum can be cooked with a so-called "sous vide" cooking method.

This can be done, for example, in an external steamer, but can also be introduced into the at least one receiving space steam to realize here a cooking under vacuum and under steam. The introduction of steam into the at least one receiving space can prevent their drying out even when warming up or keeping food warm.

Even if a negative pressure is generated in the freezing or freeze drying by means of the vacuum unit in the at least one receiving space, this is conducive. For at a negative pressure such as the vacuum that can be generated by means of the vacuum unit, frozen water passes directly from the solid to the gaseous state. In this sublimation, therefore, the fresh food or the prepared food is withdrawn quickly and gently water.

If both the evaporator fluidically connected to the sorbent and a vacuum generated by the vacuum unit in the receiving space, so can be achieved by the evaporation of liquid, a particularly rapid and efficient Schrockfrosten or freeze-drying of food.

A negative pressure in the at least one receiving space can also be adjusted by the at least one sorption element is fluidly coupled to the receiving space, wherein in the at least one sorption element, there is a negative pressure. It can therefore be provided that the at least one sorption element is optionally coupled to the receiving space and / or to the evaporator. For this purpose, in particular corresponding valves may be provided in lines which connect the sorption element with the receiving space on the one hand and with the evaporator on the other.

If a negative pressure is generated in the receiving space by means of the vacuum unit and then the sorption element is fluidically coupled to the receiving space, then it makes sense to ensure that the negative pressure prevailing in the sorption element is less than the negative pressure present in the receiving space. In that case, the receiving space can then be cooled by adsorbing water evaporating in the receiving space from the sorption element.

To provide such a function, the vacuum unit may be configured to create a vacuum in both the receiving space and the sorbent element. Furthermore, in general, the vacuum unit can be used to set a desired negative pressure in the sorption element, which leads to the rapid removal of the working medium from the evaporator and / or water vapor from the receiving space.

In a further advantageous embodiment, at least one adjustment device is provided, by means of which a volume flow of the working medium from the at least one evaporator to the at least one sorption element can be set. Thus, depending on the set volume flow, a very rapid cooling in the receiving space can be effected or a long-lasting cooling. This provides for a particularly high flexibility of the household appliance in the use of the functions provided by the household appliance.

As a further advantage, it has been shown that the at least one heating device formed for heating the food is formed by a further sorption element. This is based on the finding that heat can be provided by means of such a sorption element particularly quickly and over a particularly long time, such as can be used, for example, for keeping warm, warming up, preheating and cooking.

However, so can also be a drying or drying in a particularly simple and cheap way to realize. By discharging the water vapor from the receiving space and its introduction into the sorption also prevents the humidity in the environment of the household appliance undesirably increases when drying or drying. In addition, the drying process can be accelerated. Furthermore, such drying or drying by means of an open sorption element is associated with a particularly low consumption of energy. Also, a quiet operation can be realized, and without this in the room in which the home appliance is located, a high humidity is created.

The further sorption element may in particular comprise a further heating device, so that the sorption element can be easily regenerated if necessary.

As a further advantage, it has been shown that a further condenser, which is designed for liquefying the working medium released during the regeneration of the at least one further sorption element, is designed to transfer heat to the at least one sorption element, which is fluidically connected to the at least one evaporator can. In that case, the heat of condensation released during the liquefaction of the working medium can be used at the same time to at least partially regenerate the sorption element that can be connected to the evaporator. This leads to a particularly efficient operation of the Household appliance. In order to achieve a good heat transfer from the further capacitor to the at least one sorption element, the capacitor can, for example, lie flat against the sorption element.

If, according to a further advantageous embodiment of the invention, the at least one sorption element is fluidically connectable to the at least one receiving space, the receiving space itself can be used as an evaporator. Such a mode of operation is favorable if a moisture-containing food or a bottle wrapped in a moist cloth is introduced into the receiving space. If the fluidic connection of the receiving space with the sorption element is then produced, for example by at least partially opening a valve device in a line connecting the receiving space with the sorption element, the adsorption of water vapor in the sorption element ensures rapid cooling of the corresponding material arranged in the receiving space ,

Such operation of the household appliance can be used for example for shock freezing or freeze drying. Also, by fluidically connecting the at least one receiving space with the sorption element in the receiving space, a negative pressure can be generated which is advantageous with regard to the storage of the foodstuffs in the receiving space.

In a further advantageous embodiment of the invention, the household appliance has a first receiving space and a second receiving space. In this case, the at least one evaporator is designed for cooling foods in the first receiving space, and the at least one heating device is for heating foods in the second receiving space. So can be heated and cooled in the same home appliance at the same time. In particular, in this case the at least one heating device can be formed by the at least one sorption element. Then, namely, the heat that is generated when generating cold due to the transfer of the evaporating working medium from the evaporator to the sorbent, directly to the heating of the food located in the second receiving space.

In this case, the second receiving space is preferably arranged below the first receiving space, so that a particularly good thermal separation between the evaporator and the heating device can be realized. This applies in particular if the heating device is arranged below a bottom of the second receiving space or forms a bottom of the second receiving space, and if the evaporator is arranged above a ceiling of the first receiving space or forms a lid of the first receiving space.

In the embodiment of the household appliance with the first receiving space and the second receiving space, a condenser may be provided which serves to liquefy the working medium released during the regeneration of the at least one sorption element. Such a capacitor is preferably arranged adjacent to a side wall of the second receiving space, which may in particular be a rear side wall of the receiving space. Then, in fact, the heat released during the liquefaction of the working medium is only introduced into the second receiving space, since the condenser is not in contact with the first receiving space. In this way, the first cooling space for the cooling is as little as possible thermally influenced by the condenser, and a particularly high efficiency of the evaporator can be achieved.

It is furthermore advantageous if the domestic appliance comprises at least one drawer, wherein the at least one receiving space is delimited at least in regions by walls of the at least one drawer. Namely, if the receiving space is formed by a pull-out of the household appliance drawer, the receiving space can be particularly well equipped with food such as food or drinks. Such a drawer can be arranged in particular below another built-in appliance such as a refrigerator or a baking oven.

Finally, it has proven to be advantageous if the household appliance is designed as a cooking appliance. Then, then, the at least one heating device of the household appliance is used to cook food, so that meals can be cooled with the same domestic appliance and put into a ready-to-eat state by heating.

In the method according to the invention for operating a household appliance which comprises at least one food storage space, at least one heating device for heating foods in the at least one receiving space and at least one cooling device for cooling foods in the at least one receiving space, cooling is used at least one evaporator fluidly connected to at least one sorbent element. Here, the at least one sorption element in the fluidically connected to the at least one evaporator state adsorbs a working medium which evaporates in the at least one evaporator.

The advantages and preferred embodiments described for the household appliance according to the invention also apply to the method according to the invention.

The features and feature combinations mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination but also in other combinations or in isolation, without the scope of To leave invention. Thus, embodiments are also included and disclosed by the invention, which are not explicitly shown or explained in the figures, however, emerge and can be produced by separated combinations of features from the embodiments explained.

Further advantages, features and details of the invention will become apparent from the claims, the following description of preferred embodiments and from the drawings. Showing:

1 in perspective, a substantially parallelepiped-shaped domestic appliance in which the contents of a drawer can be optionally cooled or heated, wherein an evaporator is provided for cooling, which is fluidly connected to a sorption element which contains a zeolite as a solid sorption medium;

2 perpektivisch and partially translucent the household appliance according to 1 wherein the arrangement of the evaporator and the sorbent element is visible, and wherein as a heater further sorption element is used with a zeolite as a solid sorption medium;

3 perpektivisch and partially translucent the household appliance according to 1 , wherein only a few components of the household appliance are shown;

4 the household appliance according to 2 showing a further condenser associated with the further sorption element;

5 a variant of the household appliance according to 2 in which the entire, provided by the drawer receiving space can be used as an evaporator;

6 a variant of the household appliance, in which two separate drawers are provided;

7 the household appliance according to 6 in partly translucent illustration, showing the two drawers and a vacuum unit;

8th the household appliance according to 6 with the arrangement of an evaporator above the first drawer and a sorption element coupled fluidically to the evaporator below the second drawer;

9 the household appliance according to 6 wherein a receiving space of the upper drawer can be used as an evaporator;

10 a further variant of the household appliance, which is essentially the in 2 shown variant, in which case, however, is provided as a heating device instead of the sorption a Heizwendel; and

11 a variant of the household appliance according to 10 in which a receiving space of the drawer can be used as an evaporator.

1 shows in perspective a substantially cuboid household appliance 1 with a housing 2 and a drawer 3 , which from the housing 2 can be pulled out. From the drawer 3 is in 1 a front wall 4 to see which one through the drawer 3 provided recording room 5 (see 2 ) to the front of the household appliance 1 concludes. The recording room 5 is to its sides through side panels of the drawer 3 limited, of which in 3 a left sidewall 17 you can see. Upper side of the recording room 5 may also be provided a wall, or an evaporator 6 (see 2 ) can a lid of the drawer 3 form and so the recording room 5 limit the upper side.

In the recording room 5 introduced good, especially food such as food or drinks, by means of the household appliance 1 both cooled and heated.

For cooling is in the home appliance 1 the evaporator 6 provided, which the receiving space 5 limited to an upper side. The evaporator 6 is via a (not shown) line with a sorption element 7 fluidly connected, in which a solid sorption 8th located. In the sorption medium 8th in particular, it can be a zeolite, ie a mineral which has the property of adsorbing water vapor with the release of heat. Here, the water is incorporated into the porous structure of the zeolite.

In the line (not shown) valve is arranged, which may be formed, for example, as a solenoid valve. When the valve is closed prevails in the sorption 7 a negative pressure, So a pressure which is lower than that in the evaporator 6 present pressure. In the evaporator 6 is a working medium, for example in the form of liquid water. If the valve is opened, the pressure drop in the evaporator will result 6 and incorporating water vapor into the structure of the solid sorbent medium 8th to evaporate further water in the evaporator 6 , The resulting evaporative cooling ensures that the evaporator 6 cools very quickly, in particular in the evaporator 6 remaining water can freeze. By appropriate adjustment of the solenoid valve, such as by a clocked driving the same, the volume flow of the evaporating working medium (ie in the present case of water vapor) from the evaporator 6 towards the sorption element 7 be set. So can the cooling capacity of the evaporator 6 be regulated.

As adsorbing the water vapor to the sorbent 8th Heat is released, is present in the sorption 7 structurally of the area to be cooled, namely the receiving space 5 separated. In addition, between a rear side wall of the drawer 3 and the sorbent element 7 preferably provided a thermal insulation. In the sorption element 7 is a heater in the form of a heating coil 9 integrated (compare 3 ), of which in 2 only connections 10 you can see. By means of this heating coil 9 can the sorption element 7 be regenerated by the sorption medium 8th is heated and due to the supply of heat, the water vapor from the sorption medium 8th is desorbed. This annealing can be done regularly or depending on whether the sorption medium 8th saturated with water vapor.

So that the water vapor expelled during regeneration again as liquid water to the evaporator 6 can be provided is the sorption element 7 a capacitor 11 assigned, which serves the liquefaction of the released during regeneration water vapor. Since condensing heat is released when condensing the water vapor, so is the condenser 11 behind the drawer 3 formed recording room 5 arranged, and preferably also behind the thermal insulation, which the sorption 7 from the drawer 3 isolated. By such a configuration is also ensured that during the heating of the sorption 7 in the sorption medium 8th introduced heat not in the recording room 5 entry.

That in the condenser 11 resulting condensate is returned to the evaporator after cooling 6 pumped. Will after heating the sorption 7 So after the regeneration of the sorption medium 8th , the valve in the pipe between the evaporator 6 and the sorbent element 7 closed, as a result of the cooling of the sorption 7 in this again a negative pressure. The negative pressure conveys in a subsequent re-cooling of the receiving space 5 the suction of water vapor from the evaporator 6 to the sorption element 7 ,

If necessary inside the drawer 3 To be able to generate a negative pressure, the household appliance 1 preferably a vacuum unit 12 on. The vacuum unit 12 is here also behind the rear side wall of the drawer 3 arranged. By means of the vacuum unit 12 can also foil bags with food, which is in the receiving space 5 be vacuumed. In addition, a freeze-drying of food can be realized, which in the receiving space 5 are housed. For this purpose, namely by means of the vacuum unit 12 in the recording room 5 generates a negative pressure and at the same time the contents of the recording room 5 by means of the evaporator 6 be cooled.

At the in 2 shown variant of the household appliance 1 is for heating in the receiving space 5 as a heating device another sorption element 13 provided, which is a solid sorption medium 14 contains approximately in the form of a zeolite. When the sorption medium 14 of the sorption element 13 Water vapor adsorbed, so when using a zeolite as a sorbent 14 Water is incorporated into the crystalline structure of the zeolite, so the resulting heat to heat up in the receiving space 5 be used. The further sorption element 13 especially under the drawer 3 be arranged so as to lower heat in the receiving space if necessary 5 to be able to provide. In this way, food in the recording room 5 heated, kept warm or cooked.

Also in the sorption element 13 a heating device is preferably integrated, for example in the form of a heating coil 15 with connections 16 , By means of this heating coil 15 can the sorption medium 14 regularly heated, so regenerated. The further sorption element 13 is not connected to an evaporator, as it is only for heating and drying in the receiving space 5 good is used. In contrast, the first sorption element provides 7 when picking up in the evaporator 6 vaporizing water vapor for cooling in the receiving space 5 located estate.

Out 3 is particularly well the arrangement of the first sorption element 7 behind the rear side panel of the drawer 3 seen. Furthermore, one of the lateral side walls 17 the drawer 3 shown. In addition, it can be seen that through the evaporator 6 a the drawer 3 can be formed to the top completely closing lid. This can be done while pulling out the drawer 3 remain stationary or with the drawer 3 be pulled out. Then, by folding up the lid access to the receiving space 5 be created.

How out 4 shows is the second sorbent 13 also a capacitor 18 assigned. This second capacitor 18 can be below the drawer 3 are located. The capacitor 18 but it can also be like the first capacitor 11 of the first sorption element 7 behind the drawer 3 be arranged and this example, the sorption 7 issue. Then, when regenerating the second sorption element 13 and the resulting condensing of the water vapor resulting heat for at least partially regenerating the first sorption 7 be used. Likewise, by a good heat-conducting contact between the second sorption 13 and the first sorbent element 7 for assisting the regeneration of the first sorbent element 7 be taken care of when the second sorption element 13 is regenerated and vice versa.

At the in 5 shown variant of the household appliance 1 The structure is essentially the same as in 4 shown variant. However, here is the recording room 5 the drawer 3 as an evaporator 6 be used. In this embodiment, it may be provided that one with the first sorption 7 connected (not shown) line in which a valve is located in the receiving space 5 empties. Will now a moisture-containing good in the recording room 5 introduced and then opened the valve, the moisture from the first sorption 7 adsorbed and this the receiving space 5 cooled quickly. A here in the recording room 5 adjusting negative pressure can optionally with the vacuum unit 12 be enlarged. Also, the recording room can 5 previously by means of the vacuum unit 12 be subjected to a negative pressure, and then the receiving space 5 used for shock freezing or freeze drying of food.

Additionally or alternatively, it may be provided that the evaporator 6 not just on a top of the drawer 3 is arranged, but also on the left and right side walls 17 the drawer 3 , on the front wall 4 and / or on a back wall of the drawer 3 , By such surrounding the recording room 5 with the evaporator 6 forming plates or the like, the receiving space 5 the drawer 3 be particularly well supplied from all sides with cold.

6 shows a further variant of the household appliance 1 in which by a first drawer 19 a first recording room 20 is provided and through a second drawer 21 a second recording room 22 (see 7 and 8th ). From the two out of the case 2 of the household appliance 1 pull-out drawers 19 . 21 are in 6 only the drawers 19 . 21 Front-limiting walls 23 . 24 shown. Also at the in 6 shown household appliance is how out 7 it can be seen, the vacuum unit 12 intended. The vacuum unit 12 However, it is preferred only the upper drawer 19 assigned, so it serves for vacuuming the through the upper drawer 19 formed recording room 20 ,

The evaporator 6 is above the recording room 20 the upper drawer 19 arranged and can cover the drawer 19 form (compare 8th ). That with the evaporator 6 fluidically connected first sorption element 7 is in the variant of the household appliance according to 6 but below a bottom of the second drawer 21 arranged. Thus, when generating cold by means of the evaporator 6 in the recording room 20 the upper drawer 19 at the same time the recording room 22 the lower drawer 21 by means of the sorption element 7 be heated. Preferred in this embodiment between the two drawers 19 . 21 arranged a corresponding thermal insulation.

The upper drawer 19 , which acts as a cooling drawer, and the lower drawer 21 , which is designed as a heating drawer, can be the same size. The heating coil 9 for regenerating the sorption medium 8th is in the first sorption element 7 integrated and is therefore also under the second drawer 21 , By the arrangement of the evaporator 6 above the first drawer 19 and the sorbent element 7 below the second drawer 21 Can the through the evaporator 6 Provided source of cold and through the first sorption 7 provided heat source are particularly well thermally insulated from each other.

The for liquefying during regeneration of the first sorption element 7 released steam used condenser 11 is preferably also behind the second drawer 21 arranged, but here no thermal insulation between a rear wall of the second drawer needs 21 and the capacitor 11 to be provided. Also preferably the capacitor is sufficient 11 only up to an upper edge of the second drawer 21 , So can a particularly good efficiency of the evaporator 6 be reached, not at Condensing the water vapor from the condenser 11 released condensation heat cooling the receiving space 20 by means of the above the receiving space 20 arranged evaporator 6 impaired.

Analogous to that with respect to 5 described operation of the household appliance 1 can also at the in 6 variant shown by appropriate valve technology, the sorption 7 from the evaporator 6 be separated. Instead, the sorption element 7 with the previously vacuumed recording room 20 the upper drawer 19 get connected. In this way, serving as a refrigerating compartment upper drawer 19 even be used as an evaporator, such as shock freezing or freeze-drying. Likewise, evaporator plates or the like elements of the evaporator 6 the recording room 20 the upper drawer 19 surrounded on several sides, in particular completely enclose, to a particularly intense cooling of itself in the receiving space 20 to reach the estate.

In the 10 shown variant of the household appliance 1 is essentially the same as in 2 shown variant. However, here is below the reception room 5 as heating device no sorption element provided with a zeolite, but only a heater such as in the form of the heating coil 15 , So here is the heating coil 15 heating the recording room 5 so that in the recording room 5 Food can be kept warm or cooked. In contrast, the serves with the sorbent 7 fluidically connected evaporator 6 the cooling of itself in the receiving space 5 good.

Also in this variant is preferably located behind a rear wall of the drawer 3 the vacuum unit 12 , Likewise, the evaporator 6 above the drawer 3 positioned. That with the evaporator 6 coupled sorption element 7 is isolated behind the drawer 3 accommodated. Also the sorption element 7 associated capacitor 11 is outside the drawer 3 arranged and thermal from the receiving space 5 isolated.

As based on 11 is illustrated, it is also possible here, the sorption 7 if necessary separate from the evaporator and with the receiving space 5 the drawer 3 fluidly connect. That's the way the drawer works 3 itself can be used as an evaporator and it can in the receiving space 5 a shock freezing or freeze-drying of food done. Again, in addition or alternatively, the recording room 5 to more than one side, in particular completely, of components of the evaporator 6 be surrounded.

In the household appliances shown in the figures 1 can be adjusted by means of a program automatic preferably a time and / or a period of time to which or during which in the respective recording room 5 . 20 . 22 Good to be cooled or heated.

By the household appliance 1 are multifunctional gourmet drawers 3 . 19 . 21 provided, which due to the zeolite technology or such a sorption used both a long-lasting cooling and in particular a rapid cooling of itself in the respective receiving space 5 . 20 enabled good.

In addition, depending on the configuration of the household appliance 1 subsequently or in advance in the recording room 5 goods are heated, in particular cooked. In the embodiment of the household appliance 1 with the two drawers 19 . 21 may be the cooling and the heating in the respective receiving space 20 . 22 even be done at the same time.

LIST OF REFERENCE NUMBERS

1

 household appliance

2

 casing

3

 drawer

4

 wall

5

 accommodation space

6

 Evaporator

7

 sorption

8th

 sorbent

9

 heating coil

10

 connection

11

 capacitor

12

 vacuum unit

13

 sorption

14

 sorbent

15

 heating coil

16

 connection

17

 Side wall

18

 capacitor

19

 drawer

20

 accommodation space

21

 drawer

22

 accommodation space

23

 wall

24

 wall

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0990405 A2 [0002]

Claims (15)

Household appliance with at least one receiving space ( 5 . 20 . 22 ) for food, with at least one heating device ( 13 . 15 ) for heating in the at least one receiving space ( 5 . 22 ), and with at least one cooling device for cooling in the at least one receiving space (FIG. 5 . 20 ), characterized in that the cooling device comprises at least one evaporator ( 6 ), which with at least one sorption element ( 7 ) is fluidically connectable, wherein the at least one sorption element ( 7 ) is designed in one with the at least one evaporator ( 6 ) fluidically connected state, one in the at least one evaporator ( 6 ) to adsorb evaporating working medium. Domestic appliance according to claim 1, characterized by at least one, in particular with the at least one evaporator ( 6 ) fluidly connected capacitor ( 11 ) for liquefying during regeneration of the at least one sorption element ( 7 ) from the at least one sorption element ( 7 ) released working medium. Domestic appliance according to claim 1 or 2, characterized in that the at least one sorption element ( 7 ) and / or the at least one capacitor ( 11 ) opposite the at least one receiving space ( 5 . 22 ) are thermally isolated. Domestic appliance according to one of claims 1 to 3, characterized by at least one further heating device ( 9 ) for regenerating the at least one sorption element ( 7 ). Domestic appliance according to one of claims 1 to 4, characterized in that the at least one evaporator ( 6 ) adjacent to the at least one receiving space ( 5 . 20 ) on the upper side bounding wall and / or adjacent to at least one side wall ( 17 ) of the at least one receiving space ( 5 . 20 ) is arranged and / or a lid of the at least one receiving space ( 5 . 20 ) and / or in that the at least one heating device designed for heating the food ( 13 . 15 ) adjacent to the at least one receiving space ( 5 . 22 ) facing away from the underside of a at least one receiving space ( 5 . 22 ) is arranged limiting bottom and / or a bottom of the at least one receiving space ( 5 . 22 ). Domestic appliance according to one of claims 1 to 5, characterized by at least one vacuum unit ( 12 ) for generating a negative pressure in the at least one receiving space ( 5 . 20 . 22 ) and / or in the at least one sorption element ( 7 ). Domestic appliance according to one of claims 1 to 6, characterized by at least one adjusting device for adjusting a volume flow of the working medium of the at least one evaporator ( 6 ) to the at least one sorption element ( 7 ). Domestic appliance according to one of claims 1 to 7, characterized in that the at least one heater designed for heating the food by a further, in particular a further heating device ( 15 ) for regenerating, sorption element ( 13 ) is formed. Domestic appliance according to claim 8, characterized in that a further capacitor ( 18 ), which for liquefying when regenerating the at least one further sorption element ( 13 ) formed working medium for transferring heat to the at least one sorption element ( 7 ) is formed, which with the at least one evaporator ( 6 ) is fluidically connectable. Domestic appliance according to one of claims 1 to 9, characterized in that the at least one sorption element ( 7 ), in particular by at least partially opening a valve device, with the at least one receiving space ( 5 . 20 ) is fluidically connectable. Domestic appliance according to one of claims 1 to 10, characterized in that the at least one evaporator ( 6 ) for cooling in a first receiving space ( 20 ) is formed and the at least one, in particular by the at least one sorption element ( 7 ), for heating in a second, in particular below the first receiving space ( 20 ), receiving space ( 22 ) located foods. Domestic appliance according to claim 11, characterized in that a capacitor ( 11 ), which is used for liquefying when regenerating the at least one sorption element ( 7 ) released working medium, to a, in particular rearward, side wall of the second receiving space ( 22 ) is arranged adjacent. Domestic appliance according to one of claims 1 to 12, characterized in that the at least one drawer ( 3 . 19 . 21 ), wherein the at least one receiving space ( 5 . 20 . 22 ) at least partially through walls of the at least one drawer ( 3 . 19 . 21 ) is limited. Domestic appliance according to one of claims 1 to 13, characterized in that the domestic appliance ( 1 ) is designed as a cooking appliance. Method for operating a household appliance ( 1 ), which has at least one receiving space ( 5 . 20 . 22 ) for food, at least one heating device ( 13 . 15 ) for heating in the at least one receiving space ( 5 . 22 ) and at least one cooling device for cooling in the at least one receiving space ( 5 . 20 ), characterized in that for cooling at least one evaporator ( 6 ) with at least one sorption element ( 7 ) is fluidically connected, wherein the at least one sorption element ( 7 ) in the at least one evaporator ( 6 ) fluidly connected state adsorbs a working medium, which in the at least one evaporator ( 6 ) evaporates.

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