WO2018024561A1

WO2018024561A1 - Oven with improved ventilation and improved vapor extraction

Info

Publication number: WO2018024561A1
Application number: PCT/EP2017/068838
Authority: WO
Inventors: Turgut YERLIKAYA; Osman Cengiz; Ugur UNALAN; Yalcin Yaman; Seda KOSEOGLU
Original assignee: Arcelik AS
Current assignee: Arcelik AS
Priority date: 2016-08-03
Filing date: 2017-07-26
Publication date: 2018-02-08
Anticipated expiration: 2019-02-03
Also published as: TR201610863A2

Abstract

The present invention relates to an oven (1) comprising: a cavity (2) for cooking food; a heating unit for heating the food inside the cavity (2); a door for opening/closing the cavity (2); a housing (3) for enclosing the cavity (2); a ventilating unit (4) which is adapted to ventilate the housing (3) and/or the door, wherein the ventilating unit (4) comprises a first duct (5) for conducting the ambient air; and a first fan unit (6) which has a first fan for moving the air in the first duct (5); and a vapor extracting unit (7) which is adapted to extract the vapor inside the cavity (2) and to discharge the vapor to the outside; and a control unit for controlling the ventilating unit (4) and the heating unit.

Description

OVEN WITH IMPROVED VENTILATION AND IMPROVED VAPOR EXTRACTION

The present invention relates to a cooking appliance, in particular to an oven.

Cooking appliances such as ovens are commonly known in the art. An oven generally comprises cavity for cooking food; a heating unit for heating the food inside the cavity; a door for opening/closing the cavity; a housing for enclosing the cavity; a ventilating unit for ventilating the housing and/or the door, wherein the ventilating unit comprises: a first duct for conducting the ambient air; and a first fan unit which has a first fan for moving the air in the first duct; and a vapor extracting unit for extracting the vapor inside the cavity and for discharging the extracted vapor to the outside, and a control unit for controlling the ventilating unit and the heating unit.

DE4211755A1 discloses an oven.

A problem with the prior art oven is that the vapor extraction unit cannot discharge the vapor quickly enough to the outside when a large amount of vapor is formed in the cavity, for instance, during the drying process of the food. In such instances, there is a risk that the excessive vapor condenses on the cold electrical components in the housing, and causes short circuits.

An objective of the present invention is to provide an oven which solves the aforementioned problems of the prior art in a cost-effective way and which enables an improved extraction of the vapor and also an improved production and assemblage of the vapor extracting unit.

This objective has been achieved by the oven as defined in claim 1. Further achievements have been attained by the subject-matters respectively defined in the dependent claims.

In the oven of the present invention, the vapor extracting unit comprises: a second duct which is separately provided from the first duct and which is adapted to conduct the vapor; and a second fan unit which has a second fan for moving the vapor in the second duct, wherein the control unit is further adapted to control the vapor extracting unit.

A major advantageous effect of the present invention is that even large amounts of vapor inside the cavity can be quickly and safely discharged to the outside by virtue of the second duct and the second fan of the vapor extracting unit. Another major advantageous effect of the present invention is that the risk of condensation and in particular the risk of short circuits can be eliminated or reduced as much as possible by virtue of the vapor extracting unit. Another major advantageous effect of the present invention is that the oven can be more reliably used during the drying of the food, the steam cooking or the microwave cooking. Thereby, the usability of the oven has been increased. Another major advantageous effect of the present invention is that the oven can be easily assembled with or retrofitted with the vapor extracting unit, and thus the production costs can be reduced both in terms of labor and material. Thereby the user satisfaction can be increased.

Additional features and additional advantageous effects of the oven according to the present invention will become more apparent with the detailed description of the embodiments with reference to the accompanying drawings in which:

Figure 1 – is a schematic partial perspective view of an oven according to an embodiment of the present invention;

Figure 2 – is a schematic partial perspective view of the vapor extracting unit according to an embodiment of the present invention;

Figure 3 – is a schematic partial exploded view of the vapor extracting unit of Fig. 1.

The reference signs appearing on the drawings relate to the following technical features.

Oven
Cavity
Housing
Ventilating unit
First duct
First fan unit
Vapor extracting unit
Second duct
Second fan unit
Second fan
First duct section
Second duct section
First attachment means
First wall
Second wall
Sec6nd attachment means
First fixing means
Channel
Cover
Third attachment means
Sec6nd fixing means
Injecting duct section

The oven (1) comprises: a cavity (2) for cooking food; a heating unit (not shown) for heating the food inside the cavity (2); a door (not shown) for opening/closing the cavity (2); a housing (3) for enclosing the cavity (2); a ventilating unit (4) which is adapted to ventilate the housing (3) and/or the door, wherein the ventilating unit (4) comprises: a first duct (5) for conducting the ambient air; and a first fan unit (6) which has a first fan for moving the air in the first duct (5); and a vapor extracting unit (7) which is adapted to extract the vapor inside the cavity (2) and to discharge the vapor to the outside; and a control unit (not shown) for controlling the ventilating unit (4) and the heating unit (Fig. 1).

In the oven (1) of the present invention, the vapor extracting unit (7) comprises: a second duct (8) which is separately provided from the first duct (5) and which is adapted to conduct the vapor; and a second fan unit (9) which has a second fan (10) for moving the vapor in the second duct (8), wherein the control unit is further adapted to control the vapor extracting unit (7) (Fig. 1 to Fig. 3).

In an embodiment, the second duct (8) comprises: a first duct section (11) which has a chimney like form and which extends upwards; and a second duct section (12) which has a tapering form and which extends to the front side. In this embodiment, the second duct section (12) is located on the downstream side of the first duct section (11). In this embodiment, the second fan (10) is disposed into the second duct section (12) at a position above the first duct section (11) (Fig. 3). This embodiment is particularly advantageous as the ascending vapor can be effectively drawn into the first duct section (11) by the second fan (10), and subsequently expelled through the second duct section (12) to the outside.

In another embodiment, the second duct (8) comprises a first attachment means (13) for detachably attaching the first duct section (11) and the second duct section (12) with each other (Fig. 3). In a version of this embodiment, the first attachment means (13) comprises a screw connection. This embodiment is particularly advantageous as the vapor extracting unit (7) can be more easily manufactured and more quickly assembled.

In another embodiment, the first duct section (11) comprises: a first wall (14); a second wall (15); and a second attachment means (16) for detachably attaching the first wall (14) and the second wall (15) with each other (Fig. 3). In a version of this embodiment, the second attachment means (16) comprises a screw connection. In another version of this embodiment, the first wall (14) and the second wall (15) comprise formed sheet material. The formed sheet material may comprise plastic material or metal material. This embodiment is particularly advantageous as the first duct section (11) can be more easily manufactured and more quickly assembled.

In another embodiment, the first duct section (11) comprises: a first fixing means (17) for fixing the first wall (14) and the second wall (15) to the cavity (2). In a version of this embodiment, the first fixing means (17) comprises a screw connection. This embodiment is particularly advantageous as the vapor extracting unit (7) can be more easily and quickly assembled with the cavity (2).

In another embodiment, the second duct section (12) comprises: a channel (18); and a cover (19); and a third attachment means (20) for detachably attaching the channel (18) and the cover (19) (Fig. 3). In a version of this embodiment, the third attachment means (20) comprises a screw connection. In another version of this embodiment, the channel (18) and the cover (19) comprise formed sheet material. The formed sheet material may comprise plastic material or metal material. This embodiment is particularly advantageous as the vapor extracting unit (7) can be more easily manufactured and more quickly assembled.

In another embodiment, the second duct section (12) comprises: a second fixing means (21) for fixing the channel (18) to the housing (3) (Fig.3). In a version of this embodiment, the second fixing means (21) comprises a screw connection. This embodiment is particularly advantageous as the vapor extracting unit (7) can be more easily manufactured and more quickly assembled with the housing (3).

In another embodiment, the first duct (5) and the second duct (8) open separately into the front side of the housing (3). This embodiment is particularly advantageous as the vapor can be prevented from leaking into the housing (3), in particular towards the electrical components. Thereby the safety of the oven (1) has been further improved.

In another embodiment, the second duct (8) comprises an injecting duct section (22) which opens into the first duct (5) (Fig. 3). In a version of this embodiment, the injection duct section (22) comprises an openable/closable flap (not shown) which is driven by the control unit. This embodiment is particularly advantageous as the vapor can be still extracted when the second fan unit (9) is turned off or impaired.

In another embodiment, the injecting duct section (22) is located on the downstream side of the first duct section (11) section and branches off from the second duct section (12). This embodiment is particularly advantageous as the ascending vapor can be effectively injected into the first duct (5) of the ventilating unit (4).

In another embodiment, the heating unit comprises a magnetron (not shown) for generating microwaves inside the cavity (2). This embodiment is particularly advantageous as the usability of the oven (1) has been improved. In this embodiment, the dense vapor generated during the microwave cooking can be effectively extracted by means of the vapor extracting unit (7) even the ventilating unit (4) is turned off.

In another embodiment, the control unit comprises a food drying function for drying the food inside the cavity (2) by means of the heating unit. This embodiment is particularly advantageous as the usability of the oven (1) has been further improved. In this embodiment, the dense vapor generated during the drying process can be effectively extracted by means of the vapor extracting unit (7) even the ventilating unit (4) is turned off.

A major advantageous effect of the present invention is that even large amounts of vapor inside the cavity (2) can be quickly and safely discharged to the outside by virtue of the second duct (8) and the second fan (10) of the vapor extracting unit (7). Another major advantageous effect of the present invention is that the risk of condensation and in particular the risk of short circuits can be eliminated or reduced as much as possible by virtue of the vapor extracting unit (7). Another major advantageous effect of the present invention is that the oven (1) can be more reliably used during the drying of the food, the steam cooking or the microwave cooking. Thereby, the usability of the oven (1) has been increased. Another major advantageous effect of the present invention is that the oven (1) can be easily assembled with or retrofitted with the vapor extracting unit (7), and thus the production costs can be reduced both in terms of labor and material. Thereby the user satisfaction can be increased. Other advantageous effects of the present invention can be taken from the above-described embodiments.

Claims

An oven (1) comprising: a cavity (2) for cooking food; a heating unit for heating the food inside the cavity (2); a door for opening/closing the cavity (2); a housing (3) for enclosing the cavity (2); a ventilating unit (4) which is adapted to ventilate the housing (3) and/or the door, wherein the ventilating unit (4) comprises: a first duct (5) for conducting the ambient air; and a first fan unit (6) which has a first fan for moving the air in the first duct (5); and a vapor extracting unit (7) which is adapted to extract the vapor inside the cavity (2) and to discharge the vapor to the outside; and a control unit for controlling the ventilating unit (4) and the heating unit, characterized in that the vapor extracting unit (7) comprises: a second duct (8) which is separately provided from the first duct (5) and which is adapted to conduct the vapor; and a second fan unit (9) which has a second fan (10) for moving the vapor in the second duct (8), wherein the control unit is further adapted to control the vapor extracting unit (7).
The oven (1) according to claim 1, characterized in that the second duct (8) comprises: a first duct section (11) which has a chimney like form and which extends upwards; a second duct section (12) which has a tapering form and which extends to the front side, wherein the second duct section (12) is located on the downstream side of the first duct section (11), and wherein the second fan (10) is disposed into the second duct section (12) at a position above the first duct section (11).
The oven (1) according to claim 2, characterized in that the second duct (8) comprises a first attachment means (13) for detachably attaching the first duct section (11) and the second duct section (12) with each other.
The oven (1) according to claim 2 or 3, characterized in that the first duct section (11) comprises: a first wall (14); and a second wall (15); and a second attachment means (16) for detachably attaching the first wall (14) and the second wall (15) with each other.
The oven (1) according to claim 4, characterized in that the first duct section (11) comprises: a first fixing means (17) for fixing the first wall (14) and the second wall (15) to the cavity (2).
The oven (1) according to any one of claims 2 to 5, characterized in that the second duct section (12) comprises: a channel (18); and a cover (19); and a third attachment means (20) for detachably attaching the channel (18) and the cover (19).
The oven (1) according to claim 6, characterized in that the second duct section (12) comprises: a second fixing means (21) for fixing the channel (18) to the housing (3).
The oven (1) according to any one of claims 1 to 7, characterized in that the first duct (5) and the second duct (8) open separately into the front side of the housing (3).
The oven (1) according to any one of claims 1 to 8, characterized in that the second duct (8) comprises an injecting duct section (22) which opens into the first duct (5).
The oven (1) according to claim 9, where dependent on claim 2, characterized in that the injecting duct section (22) is located on the downstream side of the first duct section (11) and branches off from the second duct section (12).
The oven (1) according to any one of claims 1 to 10, characterized in that the heating unit comprises a magnetron for generating microwaves inside the cavity (2).
The oven (1) according to any one of claims 1 to 11, characterized in that the control unit comprises a food drying function for drying the food inside the cavity (2) by means of the heating unit.