household cooking appliance

Abstract

Household cooking appliance (1), in particular an oven, with a cooking chamber (2) which has a vapor dome (15) for removing vapors (W) from the cooking chamber (2), a collecting channel (18) provided on the vapor dome (15) and running around it for collecting liquid components (K) of the vapor (W) and a vapor pot (19) on which the liquid components (K) of the vapor (W) can be condensed, wherein a lower edge (20) of the vapor pot (19) is received in the collecting channel (18) in order to guide the liquid components (K) of the vapor (W) into the collecting channel (18).

Description

[0001] The present invention relates to a household cooking appliance, in particular an oven.

[0002] A household cooking appliance, such as an oven, has a cooking chamber with a steam dome mounted on the ceiling of the chamber. Steam can be extracted from the cooking chamber via the steam dome. An extraction system may be provided outside the cooking chamber for this purpose.

[0003] DE 33 38 094 A1 describes a baking and roasting oven with a closable oven cavity, which has a steam outlet opening in a ceiling wall. A hose-like steam channel is connected to this opening, through which the steam flows to the outside. A condensate collection device or a collection device is installed as an intermediate piece between the steam channel and the drain shaft.

[0004] EP 1 050 718 A2 describes a cooking oven with steam extraction and fresh air mixing. In this oven, steam is extracted from the cooking chamber, and fresh air is drawn in from an outside space at one front by a radial fan to dilute the steam, and then expelled back into the outside space.

[0005] DE 30 27 566 A1 describes an oven with an oven muffle that can be closed by a door and has a steam outlet opening in a preferably in the ceiling-side muffle wall, through which the steam can flow outwards, in particular into a cooling air duct that passes by the oven muffle, wherein flow guides are provided in the steam outlet opening that limit labyrinthine flow paths.

[0006] DE 199 49 724 A1 describes a steam duct for removing steam from a cooking chamber of a cooking oven, comprising a duct wall and a condensate collection device for collecting a portion of the steam that has condensed on the duct wall.

[0007] Against this background, one object of the present invention is to provide an improved household cooking appliance.

[0008] Accordingly, a household cooking appliance, in particular an oven, is proposed. The household cooking appliance comprises a cooking chamber having a steam dome for extracting steam from the cooking chamber, a collection channel provided on and around the steam dome for collecting liquid components of the steam, and a steam pot on which the liquid components of the steam can be condensed, wherein a lower edge of the steam pot is received in the collection channel in order to direct the liquid components of the steam into the collection channel.

[0009] In particular, the steam trap is positioned within the collection channel. Preferably, the collection channel runs completely around the steam dome in a ring shape. Alternatively, the collection channel may have one or more interruptions. Specifically, the steam trap and the collection channel together form a steam extraction system for the cooking chamber or the domestic cooking appliance. The steam dome is preferably located on the ceiling of the cooking chamber. The steam dome may include a multitude of openings through which the steam can be extracted from the cooking chamber. "Steam" in this context refers to cooking or baking fumes, which may contain fats in addition to water vapor. The liquid components can also be referred to as steam condensate. The condensate may include water and / or fats. Because the collection channel is provided, the components of the steam that condense on the steam trap cannot escape uncontrollably and cause corrosion in the cooking chamber.Preferably, the liquid components of the steam, which are collected in the drip tray, evaporate during operation of the household cooking appliance in which the cooking chamber is heated.

[0010] According to one embodiment, the collection trough is designed to collect a predetermined volume of the liquid components of the vapor.

[0011] The collection volume can be chosen to prevent the drip tray from overflowing during operation of the household cooking appliance. That is, the collection volume is preferably chosen to be large enough that the condensed components evaporate again before the drip tray overflows during operation of the household cooking appliance.

[0012] According to another embodiment, at least one opening is provided at the lower edge of the steam pot, through which the liquid components of the steam can flow.

[0013] This allows for an equalization of liquid levels between the outside and inside of the steam trap. This prevents the collection channel from overflowing.

[0014] According to a further embodiment, at least one opening is arranged below an upper edge of the collection trough with respect to a direction of gravity.

[0015] This ensures that liquid equalization occurs between the inside and outside of the steam trap before the collection channel overflows. Preferably, the collection channel comprises an inner upper edge located inside the steam trap and an outer upper edge located outside the steam trap. The two upper edges can be at the same height or at different heights relative to the direction of gravity. The collection channel preferably has a U-shaped cross-section.

[0016] According to another embodiment, at least one opening is a bore.

[0017] In particular, the bore is circular. The opening can also be a punched-out section.

[0018] According to another embodiment, the at least one opening is a recess, in particular a triangular one.

[0019] The recess can also be called a cutout. The recess can have any geometry. The recess can also be a slot.

[0020] According to another embodiment, a large number of openings are provided.

[0021] The openings can be arranged evenly or unevenly distributed around the circumference of the lower edge of the steam pot.

[0022] According to another embodiment, the collection trough and the steam pot are each rotationally symmetrical about a central axis.

[0023] The central axis of the collection trough and the central axis of the steam trap are preferably positioned coaxially to each other.

[0024] According to another embodiment, the collecting trough comprises a drainage trough extending radially outwards from it.

[0025] In this context, "radial" refers to a direction perpendicular to and away from the central axis of the collection channel. The drainage channel allows the condensed liquid components of the steam to be drained from the household cooking appliance or directed onto a side wall of the cooking chamber, where they can be evaporated. Alternatively, a hose or pipe connected to a hole in the collection channel can be used to remove the liquid components.

[0026] According to another embodiment, the steam pot is not firmly connected to the collection trough.

[0027] Preferably, the steam trap is loosely placed in the collection trough. The steam trap and the collection trough preferably form two separate components. Preferably, the collection trough and the steam trap are each made of a single sheet of metal, in particular a stainless steel sheet.

[0028] Other possible implementations of the household cooking appliance also include combinations of features or embodiments described previously or subsequently with regard to the exemplary embodiments, even if not explicitly mentioned. In such cases, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the household cooking appliance.

[0029] Further advantageous embodiments and aspects of the household cooking appliance are the subject of the dependent claims and the exemplary embodiments of the household cooking appliance described below. The household cooking appliance will be explained in more detail below with reference to preferred embodiments and the accompanying figures. Fig. Figure 1 shows a schematic perspective view of an embodiment of a household cooking appliance; Fig. Figure 2 shows a schematic partial sectional view of the household cooking appliance according to Fig. 1; Fig. Figure 3 shows a schematic perspective view of an embodiment of a vapor extraction device for the household appliance according to Fig. 1; Fig. Figure 4 shows a schematic sectional view of an embodiment of a vapor pot for the vapor extraction device according to Fig. 3; Fig. Figure 5 shows a schematic sectional view of an embodiment of a collection trough for the vapor extraction device according to Fig. 3; Fig. Figure 6 shows a schematic top view of another embodiment of a collection trough for the vapor extraction device according to Fig. 3: Fig. Figure 7 shows a schematic top view of another embodiment of a vapor extraction device for the household appliance according to Fig. 1; and Fig. Figure 8 shows a schematic top view of another embodiment of a vapor extraction device for the household appliance according to Fig. 1.

[0030] In the figures, identical or functionally equivalent elements have been given the same reference symbols, unless otherwise indicated.

[0031] The Fig. Figure 1 shows a schematic perspective view of a household cooking appliance 1. The household cooking appliance 1 is preferably a conventional oven, a steam oven, a combination microwave oven, or the like. The household cooking appliance 1 has an oven cavity, a muffle, or a cooking chamber 2, which can be closed by means of a door 3. The cooking chamber 2 can be arranged inside a housing of the household cooking appliance 1. The door 3 is located in the Fig. 1 is shown in its closed position. The door 3 can be opened or closed by pivoting it about a pivot axis provided at one of its lower ends. Alternatively, the door 3 can be hinged laterally to the oven compartment 2. Furthermore, the door 3 can be attached to a baking trolley that can be pulled out of the oven compartment 2. A handle 4 can be provided on an upper section of the door 3.

[0032] The cooking chamber 2 has a floor 5, a ceiling 6 opposite the floor 5, a rear wall 7 opposite the closed door 3, and two opposing side walls 8, 9. The cooking chamber 2 is preferably cuboid or cube-shaped. The cooking chamber 2 can be made of a metal material, in particular sheet steel.

[0033] The household cooking appliance 1 further comprises operating elements 11, 12 provided on a control panel 10. The operating elements 11, 12 can be, for example, push buttons and / or rotary knobs. A control device 13, shown only schematically, for controlling the household cooking appliance 1 can be provided on the rear of the control panel 10. The control device 13 can be a regulating and / or controlling device.

[0034] The Fig. Figure 2 shows a greatly enlarged schematic partial sectional view of the household cooking appliance 1. A circumferential muffle flange or cooking chamber flange 14 is provided on the front of the cooking chamber 2, to which the door 3 can be pivotally mounted. The cooking chamber 2 also includes a steam dome 15 provided on the ceiling 6, which has a plurality of holes or bores 16 in front of which, in the Fig. 2 is only marked with a reference symbol. Through the bores 16, steam W can be extracted from the cooking chamber 2. For this purpose, an extraction device can be provided outside the cooking chamber 2.

[0035] A steam extraction device 17 is provided on the steam dome 15. The steam extraction device 17 comprises a preferably annular collecting channel 18, which extends completely around the steam dome 15, and a steam pot 19. The steam pot 19 is inserted into the collecting channel 18. A lower circumferential rim 20 of the steam pot 19 is received in the collecting channel 18. The collecting channel 18 has an inner upper edge 21 and an outer upper edge 22. The inner upper edge 21 is located inside the steam pot 19, and the outer upper edge 22 is located outside the steam pot 19. The collecting channel 18 has a U-shaped cross-section. With respect to a direction of gravity g, the upper edges 21 and 22 can be at the same height or at different heights. The vapor pot 19 also includes a connection nozzle 23, which can be connected to an air duct or a vapor connection. The vapor W can be discharged or extracted via the air duct or the vapor connection.

[0036] The Fig. Figure 3 shows a schematic perspective view of an embodiment of the vapor extraction device 17. The collection channel 18 and the vapor pot 19 are each aligned with a symmetry or central axis M. 18 , M 19 rotationally symmetrical. The central axes M 18 , M 19 are preferably positioned coaxially. The collecting trough 18 is preferably not rigidly connected to the vapor pot 19.

[0037] The Fig. Figure 4 shows a schematic sectional view of an embodiment of the vapor pot 19. The connecting nozzle 23 is tubular and rotationally symmetrical about the central axis M. 19 formed. A rounded transition section 24 adjoins the connecting nozzle 23, which merges into a disc-shaped section 25. The section 25 spans a plane that is perpendicular to the central axis M. 19The steam pot 19 is formed as follows: A further frustoconical section 26 is provided between section 25 and the lower edge 20. Transitions between sections 25 and 26, as well as between section 26 and the lower edge 20, are preferably rounded. The steam pot 19 is preferably made of a metallic material, for example, a stainless steel sheet.

[0038] The Fig. Figure 5 shows a schematic sectional view of an embodiment of the collection trough 18. The collection trough 18 comprises a base 27 from which two circumferential side walls 28, 29 extend laterally. The side walls 28, 29 terminate at their respective upper edges 21, 22. As mentioned previously, the upper edges 21, 22 can be positioned at the same height or at different heights. That is, the inner upper edge 21 can be positioned above or below the outer upper edge 22 with respect to the direction of gravity g.

[0039] The Fig. Figure 6 shows a schematic top view of another embodiment of the collecting trough 18. The collecting trough 18 according to the Fig. 6 differs from the collection channel 18 according to the Fig. 5 by the fact that the collection channel 18 includes a drainage channel 30 extending laterally radially outwards from it. The drainage channel 30 may, for example, have a gradient. "Radial" here means a direction perpendicular to the central axis M. 18 and to understand it as oriented away from this.

[0040] The Fig. Figure 7 shows a schematic top view of another embodiment of the vapor extraction device 17. At least one opening 31 is provided at the lower edge 20 of the vapor pot 19. Preferably, a plurality of such openings 31 can be provided, of which in the Fig. 1, however, only one is provided with a reference numeral. The openings 31 can preferably be arranged evenly distributed around a circumference of the lower edge 20. The openings 31 can be, as in the Fig. Figure 7 shows that the openings can be designed as triangular slots, recesses, or cutouts. The openings 31 can have various wedge, slot, or hole geometries. The geometry of the openings 31 is arbitrary.

[0041] The Fig. Figure 8 shows a schematic top view of another embodiment of the fume extraction device 17. The fume extraction device 17 according to the Fig. 8 differs from the vapor extraction device 17 according to the Fig. 7 by an alternative design of the at least one opening 31. The opening 31 is designed as a bore which, with respect to the direction of gravity g, is positioned below both upper edges 21, 22 of the collecting trough 18. A plurality of bores can be provided.

[0042] In conventional household cooking appliances, inadequate steam extraction and condensation of liquid components of the steam (W) can lead to severe corrosion in high humidity. Specifically, condensate can flow back inside and out of the steam pot. This condensate can then run along the steam pot onto the oven cavity of the household cooking appliance, causing external corrosion damage. In conventional household cooking appliances, the connection between the steam pot and the air duct can be leaky, leading to condensate flow back inside and out of the steam pot. A Venturi system with flap control cannot reliably ensure sufficient extraction velocity in this situation. This uncontrolled flow of condensate is prevented in the previously described household cooking appliance 1 by the steam extraction device 17.

[0043] The functionality of the vapor extraction device 17 or the household cooking appliance 1 is described with reference to the Fig.2 explained. During operation of the household cooking appliance 1, the steam W is discharged from the cooking chamber 2 via the steam dome 15. The steam W flows along the inside of the steam pot 19, where condensate or liquid components K of the steam W condense on the inside of the steam pot 19. Condensate can also flow back out from the air duct or steam connection on the outside of the steam pot 19. The liquid components K are directed along the outside and inside of the steam pot 19 into the collection channel 18. The liquid components K can flow through the opening(s) 31, thus achieving liquid equalization between the outside and inside of the steam pot 19. The collection channel 18 can fill up to one of the upper edges 21, 22.

[0044] The collection channel 18 is designed to collect a predetermined volume of the liquid components K. The opening 31 allows the liquid components K to collect both inside and outside the lower edge 20 of the vapor trap 19. If the predetermined collection volume of the collection channel 18 is insufficient, the optional drainage channel 30 allows the liquid components K to be drained in a controlled manner. This can be done directly without a barrier or with a barrier in the form of a slightly raised indentation. By draining the liquid components K in a controlled manner using the drainage channel 30, corrosion can be significantly reduced. Alternatively, a pipe connected to a bore provided in the collection channel 18 can be used to drain the liquid components K.This allows for targeted adjustment of the amount of fluid at which drainage occurs.

[0045] The liquid components K can be discharged indiscriminately, for example, onto one of the side walls 8, 9, where they can spread over a large area without pooling and evaporate. Alternatively, they can be discharged in a controlled manner using a downpipe, hose, or similar device down to the bottom 5 of the cooking chamber 2. By providing the steam extraction device 17, the corrosive effect of the liquid components K is limited to the collection channel 18. This protects the cooking chamber 2 from external corrosion. The liquid components K of the steam W then evaporate when the cooking chamber 2 heats up. This prevents the liquid components K from overflowing the collection channel 18.

[0046] Although the present invention has been described using exemplary embodiments, it can be modified in many ways. Reference symbols used: 1 household cooking appliance 2 Cooking chamber 3 Door 4 handles 5 Floor 6 Ceiling 7 Back panel 8 side wall 9 side wall 10 Control panel 11 Control element 12 Control element 13 Control unit 14 Oven cavity flange 15 Wrasendom 16 bore 17. Vapor extraction device 18 Collection channel 19 steam pot 20 Rand 21 Top edge 22 Top edge 23 connection spigots 24 Transition section Section 25 Section 26 27 Floor 28 side wall 29 Side wall 30 drainage channel 31 Breakthrough g Direction of gravity K component M 18 central axis M 19 central axis W Wrasen

Claims

[1] Household cooking appliance (1), in particular an oven, with a cooking chamber (2) having a steam dome (15) for removing steam (W) from the cooking chamber (2), a collecting channel (18) provided on and surrounding the steam dome (15) for collecting liquid components (K) of the steam (W) and a steam pot (19) on which the liquid components (K) of the steam (W) can be condensed, wherein a lower rim (20) of the steam pot (19) is received in the collecting channel (18) to direct the liquid components (K) of the steam (W) into the collecting channel (18). [2] Household cooking appliance (1) according to claim 1, characterized by , that the collection trough (18) is designed to collect a predetermined collection volume of the liquid components (K) of the vapor (W). [3] Household cooking appliance (1) according to claim 1 or 2, characterized by, that at least one opening (31) is provided at the lower edge (20) of the vapor pot (19) through which the liquid components (K) of the vapor (W) can flow. [4] Household cooking appliance (1) according to claim 3, characterized by , that at least one opening (31) is arranged with respect to a direction of gravity (g) below an upper edge (21, 22) of the collecting trough (18). [5] Household cooking appliance (1) according to claim 3 or 4, characterized by , that at least one breakthrough (31) is a bore. [6] Household cooking appliance (1) according to claim 3 or 4, characterized by , that at least one opening (31) is a recess, in particular a triangular one. [7] Household cooking appliance (1) according to any one of claims 3 to 6, characterized by a large number of breakthroughs (31). [8] Household cooking appliance (1) according to any one of claims 1 to 7, characterized by, that the collection trough (18) and the steam pot (19) are each rotationally symmetric about a central axis (M 18 , M 19 are structured. [9] Household cooking appliance (1) according to any one of claims 1 to 8, characterized by , that the collecting channel (18) includes a drainage channel (30) extending radially outwards from it. [10] Household cooking appliance (1) according to any one of claims 1 – 9, characterized by , that the steam pot (19) is not firmly connected to the collection trough (18).

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