WO2012022608A1

WO2012022608A1 - Steam cooker device

Info

Publication number: WO2012022608A1
Application number: PCT/EP2011/063265
Authority: WO
Inventors: Jochen Herbolsheimer
Original assignee: BSH Bosch und Siemens Hausgeräte GmbH
Priority date: 2010-08-19
Filing date: 2011-08-02
Publication date: 2012-02-23
Also published as: DE102010039514A1

Abstract

The invention relates to a steam cooker device (12) which comprises a muffle (16) delimiting a cooking chamber (14), and a steam generator (22) having an evaporation unit (32) with a steam outlet (46). In order to obtain advantageous properties in terms of cleaning, safety and operation, a cooking chamber bypass (44) is provided which is designed to conduct fluid away from the steam outlet (46).

Description

Dampfgargerätvorrichtung

The invention is based on a steam cooking apparatus according to the preamble of claim 1.

From the document DE 10 2006 010 460 A1, a steam cooking apparatus with a muffle defining a cooking space and with a steam generator is already known. The steam generator has an evaporation unit, a fresh water tank and a residual water tank. In addition, the steam generator has a steam outlet and a different line from the steam outlet, which directs a fluid during a cleaning process from the evaporation unit in the residual water tank.

The object of the invention is in particular to provide a generic device with advantageous properties in terms of cleaning, security and operation with a low design cost.

The object is achieved by the features of claim 1, while advantageous embodiments and refinements of the invention

Subclaims can be removed.

The invention relates to a Dampfgargerätvorrichtung with a cooking chamber limiting muffle and with a steam generator, the at least one

Evaporation unit having a steam outlet.

It is proposed that the steamer device have a cooking chamber bypass which is intended to discharge a fluid from the steam outlet. A "cooking space" is to be understood as meaning, in particular, a space which is intended to accommodate a food to be cooked during a cooking process Preferably, the muffle has an opening, in particular closable, through which the food can be introduced into and removed from the cooking space term

"Evaporating unit" means a unit which heats a fluid during operation and thereby a phase transition of at least a portion of the fluid from one caused liquid phase in a gaseous phase. Preferably, the gaseous fluid is intended to be introduced into the cooking chamber. In particular, a "vapor outlet of the evaporation unit" is to be understood as meaning an opening of the evaporation unit, through which a steam is removed from the steam generator during steam operation

Evaporation unit exits in the direction of the cooking chamber. In particular, the term "cooking space bypass" is to be understood as a line which, in terms of effect, runs parallel to a line path extending through the cooking space and thereby bypasses the cooking space. Advantageously, the cooking chamber bypass runs from a steam outlet of the evaporation unit to a water tank and / or to an outflow, in particular into a disposal network. A "fluid" is to be understood as meaning, in particular, a substance which does not resist any slow shear.The fluid is preferably designed as a liquid and / or as a gas an efficient one

Cleaning can be achieved. In particular, with little effort the steam generator can be advantageously rinsed before each steam cycle operation.

In a further embodiment, it is proposed that the steam generator has a valve unit which is at least provided to remove the fluid from the

Discharge steam outlet either into the cooking chamber or through the cooking compartment bypass. A "valve unit" should be understood to mean, in particular, a unit which has at least one valve Preferably, the valve unit may additionally comprise two valves which are each operatively connected on one side to the steam generator The expression "either in the cooking chamber or through the cooking chamber bypass" should be understood in particular to mean that the valve unit has at least one valve position, in which the valve unit directs the fluid only into the cooking chamber and a

Valve position, in which the valve unit passes the fluid only through the cooking chamber bypass. By virtue of the valve unit, efficient cleaning on the one hand and efficient steam-cooking operation on the other hand are possible, in particular in that an undesired ingress of fluid into a region of the steam cooking appliance device can be prevented in an operating state. For example, penetration of descaling agent into the cooking chamber can be avoided. Furthermore, it is proposed that the Dampfgargerätvorrichtung has a control and / or control unit which is provided, at least during descaling and / or cleaning the fluid via the valve unit via the cooking compartment bypass derived, whereby a particularly comfortable operation can be achieved. In particular, the control and / or control unit can process operator inputs. A "control and / or control unit" is to be understood as meaning, in particular, a unit having at least one control unit, Preferably the control unit has at least one processor unit and a memory unit and one stored in the memory unit

Operating program. In particular, the term "during descaling and / or cleaning" is intended to mean a process in which a fluid transports dirt and / or lime out of the evaporation unit.

Furthermore, it is proposed that the steam cooking appliance device comprises at least one water tank, which is provided to receive the fluid derived from the cooking chamber bypass, whereby a supply network independent operation is possible. A "water tank" is to be understood in particular as meaning a unit which has at least one catchment area for collecting a liquid.

It is also proposed that the water tank be at least partially under one

Steam inlet opening of the muffle is arranged, whereby the muffle much space, especially on a horizontal plane, is available and whereby a structurally simple drainage of the muffle and the evaporation unit can be achieved. In particular, accessories with standardized dimensions can be used. The term "arranged under a steam inlet opening of the muffle" is intended to mean, in particular, that the water tank is arranged at least partially between a plane spanned by a footprint of the steam cooker and a parallel plane which intersects the steam inlet opening of the muffle At least 25%, advantageously at least 50%, of a catchment area of the water tank and particularly advantageously the entire catchment area of the water tank are to be understood. Preferably, the

Collection area of the water tank arranged below a lowermost level, which cuts the muffle and which is aligned parallel to the footprint. It is also proposed that the steam generator has a residual water tank and a fresh water tank, whereby a particularly high level of safety can be achieved with a high level of operating comfort. In particular, a resulting residual water and a used descaling agent can be collected separately from a fresh water. A "residual water tank" is to be understood in particular as meaning a tank which delimits a catchment area which is separated from a catchment area delimited by a fresh water tank Preferably the residual water tank and the fresh water tank are separated in a watertight manner, particularly preferably in a gas-tight manner. from the outside with a fluid, in particular with water and / or with a

Cleaning fluid to be filled. Preferably, a pump removes the fluid from the fresh water tank in at least one operating condition.

Furthermore, it is proposed that at least the water tank has a fill level detection. A "filling level detection" is to be understood in particular as meaning a device which comprises at least one of an amount of a fluid in the

Determined catchment of the water tank dependent characteristic. Preferably, the residual water tank and the fresh water tank each have a level detection. Due to the level detection, a particularly reliable and comfortable operation is possible. In an advantageous embodiment of the invention it is proposed that the

Steam generator has at least one tank detection, whereby a particularly reliable operation is possible. A "tank detection" is to be understood in particular to mean a device which, in at least one operating state, generates a parameter which has at least information about an arrangement of the water tank, advantageously the fresh water tank and the residual water tank of the water tank for operation. Furthermore, it is proposed that the steam generator a

Garraumentwässerungsvorrichtung having a drainage line and an actively closable valve unit, which is intended to close the drainage line, whereby a particularly simple removal of a fluid from the cooking chamber and an advantageous return of the fluid in a vapor phase by means of a bottom heat are possible. Preferably, the valve unit jams a liquid fluid for evaporation of the fluid by means of a heating means, advantageously by means of a bottom heat, in the muffle and / or at least partially in the drainage line. A "drainage line" is to be understood in particular to mean a device which at least forwards liquid fluid out of the cooking chamber

Garraumentwässerungsvorrichtung the fluid at a lowest point of the cooking chamber out of the oven. Advantageously, the Garraumentwässerungsvorrichtung is provided to derive the fluid by gravity from the cooking chamber. In this context, a "valve unit" is to be understood as meaning, in particular, an externally switchable unit which is provided to prevent dehydration of the cooking space, in particular controlled by a control unit The term "actively closable" should be understood in particular to mean that the valve unit is designed to be closable by a control unit and / or by an operator. In particular, the valve unit is not obvious from a jammed fluid and / or closable.

In addition, it is proposed that the steam generator comprises at least one line which in at least one operating state, a fluid from the residual water tank to the

Evaporation unit leads, which structurally simple, a particularly comfortable and safe descaling program is possible. In particular, this can be a

Descaling be filled in the residual water tank, whereby contamination of the fresh water tank is excluded and replenishment of fresh water in the fresh water tank between decalcified and rinsing deleted.

Furthermore, the invention is based on a method with a steam cooking appliance device which comprises a cooking space delimiting muffle and a steam generator which has an evaporation unit with a steam outlet. It is proposed that the steam cooking device has a cooking chamber bypass through which a fluid, in particular during a descaling, of the

Steam outlet is derived, which structurally simple, a particularly comfortable operation and efficient cleaning can be achieved.

It is also proposed that the steam generator has a valve unit, the fluid from the steam outlet either in the cooking chamber or through the

Bourdon bypass derived, whereby on the one hand an efficient cleaning and on the other hand an efficient steam cooking operation is possible, in particular by in one

Operating state an undesirable penetration of fluid in an area of

Steam cooking appliance device can be prevented.

Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Fig. 1 is a front view of a Dampfgargeräts with a

Steam cooking appliance device according to the invention,

Fig. 2 is a schematic representation of the Dampfgargerätvorrichtung from

Fig. 1 with a Garraumentwässerung and

3 is a schematic representation of the Garraumentwässerung of FIG. 2nd

Fig. 1 shows a steam cooker 10 with a Dampfgargerätvorrichtung 12. Das

Steam cooking appliance 10 is designed as a steam oven. The Dampfgargerätvorrichtung 12 has a cooking chamber 14 limiting muffle 16, a cooking chamber door 18, an operator interface 20 and a steam generator 22. The steam generator 22 has a residual water tank 24 and a fresh water tank 26. The residual water tank 24 and the fresh water tank 26 are disposed below the muffle 16, between a footprint 28 of the steam cooking appliance 10 and the muffle 16. The residual water tank 24 and the fresh water tank 26 are formed as drawers. You are not one of them shown extractable operator. They are at one

closed cooking chamber door 18 arranged under the cooking chamber door 18. Alternatively, a residual water tank and a fresh water tank could be arranged behind the cooking chamber door 18 and, in particular, be removable only when the cooking chamber door 18 is open. Of the

Residual water tank 24 and the fresh water tank 26 have a volume that appears reasonable to the expert. The residual water tank 24 and the fresh water tank 26 have different capacity. In this case, the fresh water tank 26 is larger than the residual water tank 24. A pump 30 of the steam generator 22 is also disposed below the muffle 16. Alternatively or additionally, the pump 30 could be arranged behind the muffle 16, that is to say on a side of the muffle 16 facing away from the cooking chamber door 18.

Fig. 2 shows in particular the steam generator 22 in a schematic representation. The steam generator 22 has an evaporation unit 32, the pump 30, a first

Valve unit 34 and a second valve unit 36. In a steaming operation, the pump 30 draws a fluid, in this case water, from the fresh water tank 26 through the first valve unit 34. The pump 30 directs the fluid into the evaporation unit 32. A heating means 38 of the evaporation unit 32 vaporizes the fluid. At a

Steaming operation, the second valve unit 36 passes the steam through a

Steam inlet opening 40 of the muffle 16 in the muffle 16, that is in the cooking chamber 14. The evaporation unit 32 has a level detection 42. The level detection 42 detects a characteristic over a level of the fluid in the heating means 38th

In addition, the steam generator 22 has a cooking chamber bypass 44. During decalcification, the second valve unit 36 directs a fluid, in this case a descaling agent, into the cooking chamber bypass 44 instead of the muffle 16. The cooking chamber bypass 44 directs the fluid from a steam outlet 46 of the evaporation unit 32 directly into the residual water tank 24. Gravity moves the fluid. During decalcification, the second valve unit 36 closes a conduction path to the steam inlet opening 40 of the muffle 16. In a steam cooking operation, the second valve unit 36 closes a conduction path through the cooking chamber bypass 44 and opens a conduction path to the steam inlet opening 40 of the muffle 16. Thus, the second valve unit 36 the fluid from the evaporation unit 32 in a steam cooking operation only in the cooking chamber 14 and a descaling by the cooking chamber bypass 44 only in the residual water tank 24. Alternatively or additionally could at a condensed steam is discharged through the cooking chamber bypass 44. The second valve unit 36 is formed as a three-way valve.

The residual water tank 24 and the fresh water tank 26 each have one

Level detection 48 on. The fill level detection 48 detects a parameter that includes a fill level of the respective tank 24, 26. The fill level detection 48 of the fresh water tank 26 detects at least when a catchment area of the fresh water tank 26 is empty. The fill level recognition 48 of the residual water tank 24 detects at least when a catchment area of the residual water tank 24 is full. In addition, the steam generator 22 has two tank detections 50. The tank detectors 50 provide characteristics that describe whether the fresh water tank 26 or the residual water tank 24 are properly inserted into the steam cooking appliance 10.

The steam cooking appliance 10 has a control and / or control unit 52. The control and / or control unit 52 is not shown in detail lines with the

Operator interface 20, with the pump 30, with the first valve unit 34, with the second valve unit 36, with the heating means 38, with the level detection 42, with the level detectors 48 and with the tank detectors 50. In addition, the control and / or control unit 52 controls a timing of the steam-cooking operation and the decalcification. In this case, the control and / or control unit 52 directs the fluid during descaling and / or cleaning by means of the second valve unit 36

Evaporation unit 32 directly to the residual water tank 24. The operator can influence the action of the control and / or control unit 52 by means of the user interface 20. In addition, the control and / or control unit 52 shows the operator on the

Operator interface 20 when an action on the part of the operator is necessary, for example, when descaling.

Furthermore, the steam generator 22 has a detail in FIG. 3

Garraumentwässerungsvorrichtung 54 on. The garment drainage device 54 includes a drainage line 56 and a valve unit 58. The

Drainage line 56 connects a lowest point 60 of the muffle 16 over the

Valve unit 58 with the residual water tank 24. The valve unit 58 closes in a steam operation of the control and / or control unit 52 actively controlled the

Drainage line 56. This condenses condensed steam in the muffle 16. This can be re-evaporated by means of a bottom heat 62 of Dampfgargeräts 10. In addition, the control and / or control unit 52 can open the drainage line 56 by means of the valve unit 58. Then, the condensed fluid flows by gravity into the residual water tank 24. Alternatively, or in addition to the drainage line 56, the muffle 16 could have other, for those skilled in the appear appropriate expirations for a fluid. Between the lower heat 62 and the residual water tank 24, a thermal insulation, not shown, is arranged.

The steam generator 22 comprises a line 64, which in a descaling or in a steam operation, a fluid, here a descaling agent or water, of the

Residual water tank 24 leads to the evaporation unit 32. For this purpose, this line is connected to the first valve unit 34. The pump 30 sucks the fluid from the

Residual water tank 24 and gives it to the evaporation unit 32 from. The fluid flows back into the residual water tank 24 during descaling from the evaporation unit 32 by gravity through the cooking chamber bypass 44. In a steam cooking operation, the residual water tank 24 serves as a reserve and as part of a cycle for the steam cooking operation. The fluid passes from the evaporation unit 32 via the cooking chamber 14 back into the residual water tank 24th

The line 64 thus forms part of a cycle of the fluid through the

Evaporation unit 32, a cooking chamber 14 and the residual water tank 24. The line 64 has a filter 66. The filter 66 cleans the fluid before entering the

Evaporation unit 32 passes. Thus, the filter 66 forms part of the circuit. The filter 66 is cleaned with a fluid that is flowed or pumped from the evaporation unit 32 back into the residual water tank 24. After descaling, the control and / or control unit 52 switches the first valve unit 34 and flushes the

Evaporation unit 32 with fresh water from the fresh water tank 26. In addition, the control and / or control unit 52 flushes the evaporation unit 32 immediately before a steam cooking operation. Alternatively or additionally, the pump 30 could aspirate a descaling agent from the fresh water tank 26. reference numeral

10 steam cooker place

12 Steam cooker device lower heat

14 cooking space line

16 muffle filters

18 cooking chamber door

20 operator interface

22 steam generators

24 residual water tank

26 fresh water tank

28 footprint

30 pump

32 evaporation unit

34 first valve unit

36 second valve unit

38 heating means

40 steam inlet opening

42 level detection

44 cooking compartment bypass

46 steam outlet

48 level detection

50 tank detections

52 control and / or control unit

54 Garraumentwässerungsvorric

Pla

56 drainage pipe

58 valve unit

Claims

claims

A steam cooking apparatus (12) having a cooking space (14) defining a muffle (16) and a steam generator (22) having an evaporation unit

(32) having a steam outlet (46), characterized by a cooking chamber bypass (44), which is intended to discharge a fluid from the steam outlet (46).

Steam cooking device according to claim 1, characterized in that the steam generator (22) has a valve unit (36) which is at least provided to discharge the fluid from the steam outlet (46) either into the cooking chamber (14) or through the cooking chamber bypass (44) ,

Steam cooking appliance device according to claim 2, characterized by a control and / or control unit (52), which is provided, at least during descaling and / or cleaning the fluid via the valve unit (36) via the cooking chamber bypass (44).

Steam cooking appliance device according to one of the preceding claims,

characterized by at least one water tank (24, 26) which is provided, the over the cooking chamber bypass (44) derived fluid

take.

Steam cooking appliance device according to claim 4, characterized in that the water tank (24, 26) at least partially under a steam inlet opening (40) of the muffle (16) is arranged.

6. Dampfgargerätvorrichtung at least according to claim 4, characterized

characterized in that the steam generator (22) has a residual water tank (24) and a fresh water tank (26).

7. Dampfgargerätvorrichtung at least according to claim 4, characterized in that at least the water tank (24, 26) a

Has fill level detection.

8. Dampfgargerätvorrichtung at least according to claim 4, characterized

characterized in that the steam generator (22) has at least one tank detection (50).

9. Dampfgargerätvorrichtung according to any one of the preceding claims, characterized in that the steam generator (22) has a

A cooking drainage device (54) having a drainage line (56) and an actively closable valve unit (58) arranged to close the drainage line (56).

10. Dampfgargerätvorrichtung at least according to claim 6, characterized

characterized in that the steam generator (22) comprises at least one line (64) which in at least one operating state, a fluid from the

Residual water tank (24) leads to the evaporation unit (32).

11. Steam cooker with a Dampfgargerätvorrichtung (12) according to one of

previous claims.

12. A method comprising a steam cooker device (12) comprising a muffle (16) defining a cooking chamber (14) and a steam generator (22) having an evaporation unit (32) with a steam outlet (46),

characterized by a cooking chamber bypass (44) through which a fluid from the steam outlet (46) is derived.

13. The method according to claim 12, characterized in that the

Steam generator (22) has a valve unit (36), the fluid from the steam outlet (46) either in the cooking chamber (14) or through the

Cooking chamber bypass (44) derives.