OVEN APPLIANCE WITH FEATURES FOR SELECTING CONVECTION AIR FLOW DIRECTION
An oven appliance is provided. The oven appliance includes a cabinet with a cooking chamber for receipt of food for cooking. The oven appliance also includes features for selectively generating a flow of heated air within the chamber in a first direction or a second direction. Selecting the direction of heated air within the chamber can improve cooking of food items therein.
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The present subject matter relates generally to oven appliances with features for convection cooking.
BACKGROUND OF THE INVENTIONOven appliances generally include a cabinet with a cooking chamber positioned therein. The cooking chamber is configured for receipt of food articles for cooking. The oven appliance also includes a heating element for generating heat energy for cooking. The heating element can be, e.g., an electric resistance element or a gas burner. Certain oven appliances also include features for forcing movement of heated air within the cooking chamber. Such oven appliances are generally referred to as convection ovens.
In typical conventional ovens, heated air within the cooking chamber can be circulated with a fan when in a convection mode. The fan initiates a flow of heated air through a plurality of slots in a top wall of the oven's cabinet. The heated air exiting the slots in the top wall generally flows in a vertical direction. Such a configuration distributes heat energy evenly to food articles cooking on a top rack within the cooking chamber. However, food articles cooking on a lower rack disposed below the top rack generally do not receive the benefits of the flow of heated air because the top rack or items disposed on the top racks prevent the flow of heated air from continuing to the lower rack. Thus, when cooking food items on both the top and lower racks the benefits of convection oven may be limited to the food items disposed on the top rack.
In certain other convection ovens, the fan initiates a flow of heated air through a plurality of slots in a sidewall or a back wall of the oven's cabinet. The heated air exiting the slots in the sidewall or back wall generally flows in a horizontal direction. Such a configuration may distribute heat energy more evenly to both the top rack and the lower rack disposed below the top rack compared to the configuration described above. However, variations within the flow of heated air exiting the slots, e.g., due to slot size, slot configuration, or fan speed, can lead to uneven cooking. Also, heated air flowing from a back to a front of a food article may cause the back of the food article to cook more quickly than the front of the food article. Similarly, heated air impacting edges of a food article may cause the edges to cook more quickly than a center of the food article.
Accordingly, an oven appliance with features for improved convection cooking would be useful. In particular, an oven appliance with features for selectively generating a flow of heated air along a horizontal or a vertical direction would be useful.
BRIEF DESCRIPTION OF THE INVENTIONAn oven appliance is provided. The oven appliance includes a cabinet with a cooking chamber for receipt of food for cooking. The oven appliance also includes features for selectively generating a flow of heated air within the chamber in a first direction or a second direction. Selecting the direction of heated air within the chamber can improve cooking of food items therein. Aspects and advantages of the invention will be set forth in part in the following description, or may be obvious from the description, or may be learned through practice of the invention.
In a first exemplary embodiment, an oven appliance is provided. The oven appliance includes a cabinet having a chamber positioned within the cabinet. The chamber is configured for receipt of food items for cooking. A top wall, a bottom wall, a back wall, and a pair of opposing sidewalls define the chamber. The top wall defines a first plurality of apertures. The sidewalls or the back wall define a second plurality of apertures. A first duct is in fluid communication with the chamber through the first plurality of apertures. A second duct is in fluid communication with the chamber through the second plurality of apertures. A fan is in fluid communication with the first duct and the second duct. The fan is operable to cause air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
In a second exemplary embodiment, an oven appliance is provided. The oven appliance includes a cabinet. A chamber is positioned within the cabinet and configured for receipt of food items for cooking. The chamber is defined by a top wall, a bottom wall, a back wall, and a pair of opposing side walls that extend between the top wall and the bottom wall. A first plurality of apertures is defined by the top wall. A first duct is defined between the top wall and the cabinet. A second plurality of apertures is defined by the back wall. A second duct is defined between the back wall and the cabinet. A fan is in fluid communication with the first duct and the second duct. The fan is operable to cause air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
In a third exemplary embodiment, an oven appliance is provided. The oven appliance includes a cabinet. A chamber is positioned within the cabinet and configured for receipt of food items for cooking. The chamber is defined by a top wall, a bottom wall, a back wall, and a pair of opposing sidewalls that extend between the top wall and the bottom wall. A first plurality of apertures is defined by the top wall. A first duct is defined between the top wall and the cabinet. A second plurality of apertures is defined by the sidewalls. A second duct is defined between the sidewalls and the cabinet. A fan is in fluid communication with the first duct and the second duct. The fan is operable to cause air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
In a fourth exemplary embodiment, an oven appliance is provided. The oven appliance includes a cabinet having a chamber positioned within the cabinet. The chamber is configured for receipt of food items for cooking. A top wall, a bottom wall, a back wall, and a pair of opposing sidewalls define the chamber. The top wall defines a first plurality of apertures. The sidewalls or the back wall define a second plurality of apertures. A first fan and a second fan are also provided. The first fan is operable to cause air to flow out of the first plurality of apertures. The second fan is operable to cause air to flow out of the second plurality of apertures.
In a fifth exemplary embodiment, an oven appliance is provided. The oven appliance includes a cabinet having a chamber positioned within the cabinet. The chamber is configured for receipt of food items for cooking. A top wall, a bottom wall, a back wall, and a pair of opposing sidewalls define the chamber. The top wall defines a first plurality of apertures. The sidewalls or the back wall define a second plurality of apertures. A first duct is in fluid communication with the chamber through the first plurality of apertures. A second duct is in fluid communication with the chamber through the second plurality of apertures. The oven appliance also includes means for causing air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
These and other features, aspects and advantages of the present invention will become better understood with reference to the following description and appended claims. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention.
A full and enabling disclosure of the present invention, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures, in which:
Reference now will be made in detail to exemplary embodiments of the invention, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation of the invention, not limitation of the invention. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention. For instance, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Thus, it is intended that the present invention covers such modifications and variations as come within the scope of the appended claims and their equivalents.
Referring to
Cabinet 101 extends between a first side 140 (
Chamber 101 has interior walls including opposing sidewalls 118, bottom wall 119, back wall 120, and top wall 121 that define cooking chamber 116. Bottom wall 119 and top wall 121 are spaced apart along the vertical direction V, and sidewalls 118 extend along the vertical direction V between top wall 121 and bottom wall 119. Back wall 120 extends between sidewalls 118 along the horizontal direction and also extends between top wall 121 and bottom wall 119 along the vertical direction V.
Sidewalls 118 include supports 122 (
Oven 100 includes a door 104 with handle 106 that provides for opening and closing access to a cooking chamber 116. A user of the appliance 100 can place a variety of different items to be cooked in chamber 116 onto racks 132. Heating elements 117 are positioned at the top and the bottom of chamber 116 to provide heat for cooking and cleaning. Such heating element(s) can be e.g., gas, electric, microwave, or a combination thereof. Other heating elements (not shown) could be located at other locations as well. A window 110 on door 104 allows the user to view e.g., food items during the cooking process.
Referring to
For example, in response to user manipulation of the user interface panel 102, the controller 160 can operate heating element(s). The controller 160 can receive measurements from a temperature sensor 113 (
The controller 160 may be positioned in a variety of locations throughout appliance 100. Thus, the controller 160 may be located under or next to the user interface 102 or otherwise within top panel 114. In an exemplary embodiment, input/output (“I/O”) signals are routed between the controller 160 and various operational components of appliance 100 such as heating element(s), controls 112, display 103, sensor(s), alarms, and/or other components as may be provided. In one exemplary embodiment, the user interface panel 102 may represent a general purpose I/O (“GPIO”) device or functional block.
Although shown with touch type controls 112, it should be understood that controls 112 and the configuration of appliance 100 shown in
Oven appliance 100 is equipped with features for selectively generating a forced flow of heated air within cooking chamber 116 (e.g., using a fan(s) as discussed in greater detail below). Thus, oven appliance 100 is generally referred to as a convection oven. Such a flow of heated air can, e.g., decrease the required cooking temperature for food items, decrease the amount of time needed to cook food items, or assist in cooking food items more evenly.
In
First and second pluralities of apertures 150, 152 may have any suitable geometry. For example, as shown in
In alternative exemplary embodiments, as will be understood by those skilled in the art, louvers or slats (not shown) may be mounted adjacent first and second pluralities of apertures 150, 152. The louvers are configured for redirecting flow AV and/or flow AH/T. For example, the louvers can more evenly direct flow AV and flow AH/T throughout cooking chamber 116. Thus, the louvers can redirect flow AV away from the vertical direction V and/or redirect flow AH/T away from the horizontal or transverse direction H or T respectively.
Oven appliance 100 is configured for selective generation of flow AH/T or flow AV as described in greater detail below. However, it should be understood that flow AV and flow AH/T need not exit first and second plurality of apertures 150 and 152 exactly along the vertical and transverse directions V and T respectively. For example, flow AV may exit first plurality of apertures 150 at an angle relative to the vertical direction V, e.g., about thirty, twenty, ten, or five degrees. Also, flow AH/T may exit second plurality of apertures 152 at similar angles relative to the transverse or horizontal directions T and H.
Looking back at
Conversely, as may be seen in
Thus, e.g., a user may selectively adjust oven appliance 100 (e.g., using controls 112) such that AV flows from first plurality of apertures 150 when food items are cooking only on top rack 136 or when only one of racks 132 is positioned within cooking chamber 116. Alternatively, the user may selectively adjust oven appliance 100 such that flow AH/T flows from second plurality of apertures 152 when food items are cooking on top rack 136 and bottom rack 137 or when multiple racks 132 are positioned within cooking chamber 116. A sensor (not shown) could also determine whether food items are cooking on top or bottom racks or when one or multiple racks 132 are positioned in cooking chamber 116 and adjust oven appliance 100 accordingly.
In the various exemplary embodiments, oven appliance 100 is configured for selective generation of flows AH/T and AV. Thus, a user may selectively determine the direction of heated air flowing within cooking chamber 116. More particularly, oven appliance 100 includes features for causing air (e.g., heated air from chamber 116) to flow out of either the first plurality of apertures 150 or the second plurality of apertures 152 depending upon the direction of air flow selected for cooking operations.
In
In
As will be understood by those skilled in the art, other suitable configurations for first and second ducts 210, 220 may be provided. For example, additional boundary walls may be provided spaced apart from cabinet 101 and the walls of chamber 116 such that cabinet 101 is not needed to define first and second ducts 210, 220. Also, first and second ducts 210, 220 may be constructed of piping or other similar conduits for air disposed between cabinet 101 and the walls of chamber 116 or outside of cabinet 101.
As may be seen in
Axial fan 200 is configured for selectively rotating in a first direction of rotation and a second direction of rotation. The second direction of rotation being opposite to the first direction of rotation. Axial fan 200 urges air in opposite directions along the transverse direction T when axial fan 200 rotates in the first and second directions, respectively. Axial fan 200 is in communication with controller 160 (
When axial fan 200 rotates in the first direction of rotation, heated air from cooking chamber 116 is urged through second plurality of apertures 152 into second duct 220. Subsequently, axial fan 200 urges such heated air from second duct 220 into first duct 210 through manifold 201. Such heated air is then urged through first duct 210 to first plurality of apertures 150 where such air exits first plurality of apertures 150 in the vertical direction V as flow AV.
Alternatively, when axial fan 200 rotates in the second direction of rotation, heated air from cooking chamber 116 is urged through first plurality of apertures 150 into first duct 210. In turn, axial fan 200 urges such heated air from first duct 210 into second duct 220 through manifold 201. Such heated air is then urged through second duct 220 to second plurality of apertures 152 where such air exits second plurality of apertures 152 in the transverse direction T as flow AH/T.
Thus, axial fan 200 selectively forces a flow of heated air within cooking chamber 116. In particular, axial fan 200 may rotate in the first direction to initiate flow AV and rotate in the second direction to initiate flow AH/T . As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, axial fan 200 may be mounted to cabinet 101 adjacent top wall 121 or sidewalls 118 with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120.
Like in the exemplary embodiment shown in
Unlike axial fan 200, radial fan 202 is configured for rotation only in a single direction of rotation. However, radial fan 202 includes a damper 203 for selectively adjusting a flow of air from radial fan 202. Damper 203 is configured for selective adjustment between a first configuration and a second configuration. In the first configuration shown in
When damper 203 is in the first configuration shown in
When damper 203 is in the second configuration shown in
Thus, radial fan 202 selectively generates a flow of heated air within cooking chamber 116. In particular, air urged by radial fan 202 into manifold 201 may be selectively directed by damper 203 into first or second ducts 210 and 220. As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, radial fan 202 may be mounted to cabinet 101 adjacent top wall 121 or sidewalls 118 with first and second ducts 210 and 220 and manifold 201 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120.
As may be seen in
Thus, when axial fan 200 rotates in the first direction of rotation, heated air from cooking chamber 116 is urged through first plurality of apertures 150 where such air exits first plurality of apertures 150 in the vertical direction V as flow AV. Alternatively, when axial fan 200 rotates in the second direction of rotation, heated air from cooking chamber 116 is urged through second plurality of apertures 152 where such air exits second plurality of apertures 152 in the horizontal direction H as flow AH/T. As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, axial fan 200 may be mounted to cabinet 101 adjacent top wall 121 or sidewalls 118 with first and second ducts 210 and 220 modified accordingly.
Like the exemplary embodiment shown in
It should be understood that, for
As may be seen in
When first axial fan 230 rotates in the first direction of rotation as shown in
As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, first and second axial fans 230 and 232 may be mounted to cabinet 101 adjacent top wall 121 or sidewalls 118 with first and second ducts 210 and 220 modified accordingly. In addition, first and second axial fans 230 and 232 may switch positions with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120.
When first radial fan 240 rotates as shown in
Alternatively, when second radial fan 242 rotates as shown in
As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, first and second radial fans 240 and 242 may be mounted to cabinet 101 adjacent top wall 121 or sidewalls 118 with first and second ducts 210 and 220 modified accordingly. In addition, first and second radial fans 240 and 242 may switch positions with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120.
When first radial fan 240 rotates as shown in
As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, first radial fan and second axial fan 240 and 232 may be mounted to cabinet 101 adjacent top wall 121 or sidewalls 118 with first and second ducts 210 and 220 modified accordingly. In addition, first radial fan and second axial fan 240 and 232 may switch positions with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120 with second duct 220 modified accordingly.
As may be seen in
When first axial fan 230 rotates as shown in
Alternatively, when second axial fan 200 rotates as shown in
As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, first and second axial fans 230 and 232 may be mounted to cabinet 101 adjacent sidewalls 118 with first and second ducts 210 and 220 modified accordingly. In addition, first and second axial fans 230 and 232 may switch positions with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120. Further, first and second axial fans 230 and 232 may rotate in directions opposite to that shown in
When first radial fan 240 rotates as shown in
Alternatively, when second radial fan 242 rotates as shown in
As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, first and second radial fans 240 and 242 may be mounted to cabinet 101 adjacent sidewalls 118 with first and second ducts 210 and 220 modified accordingly. In addition, first and second radial fans 240 and 242 may switch positions with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120.
When first axial fan 230 rotates as shown in
Alternatively, when second radial fan 242 rotates as shown in
As will be understood by those skilled in the art, other suitable configurations may be used to achieve such selective air flow. For example, first and second radial fans 240 and 242 may be mounted to cabinet 101 adjacent sidewalls 118 with first and second ducts 210 and 220 modified accordingly. Similarly, axial fan and radial fan may be switched with first and second ducts 210 and 220 modified accordingly. Also, second plurality of apertures 152 may be defined in sidewalls 118 rather than back wall 120.
In the exemplary embodiments shown above, the controller 160 (
To further reiterate, as will be understood by those skilled in the art, axial fans 230 and 232 have a blade configuration that yields some component of axial flow (relative to the rotation of fan blades of axial fans 230 and 232) that reverses direction when rotation direction of axial fans 230 and 232 is reversed. Conversely, radial fans 240 and 242 have a blade configuration that yields some component of radial flow (relative to the rotation of fan blades of radial fans 240 and 242) when radial fans 240 and 242 rotate.
Further, the exemplary embodiments shown in
This written description uses examples to disclose the invention, including the best mode, and also to enable any person skilled in the art to practice the invention, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other examples are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.
Claims
1. An oven appliance, comprising:
- a cabinet having a chamber positioned within said cabinet, the chamber configured for receipt of food items for cooking;
- a top wall, a bottom wall, a back wall, and opposing sidewalls defining the chamber, said top wall defining a first plurality of apertures, said sidewalls or said back wall defining a second plurality of apertures, a first duct in fluid communication with the chamber through the first plurality of apertures, and a second duct in fluid communication with the chamber through the second plurality of apertures; and
- a fan in fluid communication with said first duct and said second duct, said fan operable to cause air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
2. The oven appliance of claim 1, wherein said fan is configured for rotation in a first direction and a second direction, the second direction being opposite to the first direction, wherein when said fan rotates in the first direction air flows out of the first plurality of apertures, wherein when said fan rotates in the second direction airflows out of the second plurality of apertures.
3. The oven appliance of claim 1, wherein said fan is an axial fan.
4. The oven appliance of claim 1, further comprising a damper configured for selective adjustment between a first configuration and a second configuration, wherein in the first configuration said fan directs air flow into said first duct, wherein in the second configuration said fan is directs air flow into said second duct.
5. The oven appliance of claim 1, wherein said fan is a radial fan.
6. The oven appliance of claim 1, wherein said fan comprises:
- a first fan in fluid communication with the first duct; and
- a second fan in fluid communication with the second duct.
7. The oven appliance of claim 1, wherein said fan is positioned adjacent said top wall.
8. The oven appliance of claim 1, wherein said fan is positioned adjacent said back wall.
9. An oven appliance comprising:
- a cabinet;
- a chamber positioned within said cabinet and configured for receipt of food items for cooking, said chamber defined by a top wall, a bottom wall, a back wall, and a pair of opposing side walls extending between said top wall and said bottom wall;
- a first plurality of apertures defined by said top wall;
- a first duct defined between said top wall and said cabinet;
- a second plurality of apertures defined by said back wall;
- a second duct defined between said back wall and said cabinet; and
- a fan in fluid communication with said first duct and said second duct, said fan operable to cause air to flow out of either said first plurality of apertures or said second plurality of apertures depending upon the direction of air flow selected for cooking operations.
10. The oven appliance of claim 9, wherein said fan is configured for rotation in a first direction and a second direction, the second direction being opposite to the first direction, wherein when said fan rotates in the first direction air flows out of said first plurality of apertures, wherein when said fan rotates in the second direction air flows out of said second plurality of apertures.
11. The oven appliance of claim 9, wherein said fan is an axial fan.
12. The oven appliance of claim 9, further comprising a damper configured for selective adjustment between a first configuration and a second configuration, wherein in the first configuration said fan is in fluid communication with said first duct, wherein in the second configuration said fan is in fluid communication with said second duct.
13. The oven appliance of claim 9, wherein said fan is a radial fan.
14. The oven appliance of claim 9, wherein said fan comprises:
- a first fan in fluid communication with said first duct; and
- a second fan in fluid communication with said second duct.
15. An oven appliance, comprising:
- a cabinet;
- a chamber positioned within said cabinet and configured for receipt of food items for cooking, said chamber defined by a top wall, a bottom wall, a back wall, and a pair of opposing side walls extending between said top wall and said bottom wall;
- a first plurality of apertures defined by said top wall;
- a first duct defined between said top wall and said cabinet;
- a second plurality of apertures defined by said side walls;
- a second duct defined between said side walls and said cabinet; and
- a fan in fluid communication with said first duct and said second duct, said fan operable to cause air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
16. The oven appliance of claim 16, wherein said fan is configured for rotation in a first direction and a second direction, the second direction being opposite to the first direction, wherein when said fan rotates in the first direction air flows out of said first plurality of apertures, wherein when said fan rotates in the second direction air flows out of said second plurality of apertures.
17. The oven appliance of claim 16, further comprising a damper configured for selective adjustment between a first configuration and a second configuration, wherein in the first configuration said fan is in fluid communication with said first duct, wherein in the second configuration said fan is in fluid communication with said second duct.
18. The oven appliance of claim 16, wherein said fan comprises:
- a first fan in fluid communication with said first duct; and
- a second fan in fluid communication with said second duct.
19. An oven appliance, comprising:
- a cabinet having a chamber positioned within said cabinet, the chamber configured for receipt of food items for cooking;
- a top wall, a bottom wall, a back wall, and opposing sidewalls defining the chamber, said top wall defining a first plurality of apertures, said sidewalls or said back wall defining a second plurality of apertures; and
- a first fan and a second fan, said first fan operable to cause air to flow out of the first plurality of apertures, said second fan operable to cause air to flow out of the second plurality of apertures.
20. An oven appliance, comprising:
- a cabinet having a chamber positioned within said cabinet, the chamber configured for receipt of food items for cooking;
- a top wall, a bottom wall, a back wall, and opposing sidewalls defining the chamber, said top wall of defining a first plurality of apertures, said sidewalls or said back wall defining a second plurality of apertures, a first duct in fluid communication with the chamber through the first plurality of apertures, and a second duct in fluid communication with the chamber through the second plurality of apertures; and
- means for causing air to flow out of either the first plurality of apertures or the second plurality of apertures depending upon the direction of air flow selected for cooking operations.
Type: Application
Filed: Apr 26, 2012
Publication Date: Oct 31, 2013
Applicant: General Electric Company (Schenectady, NY)
Inventor: Eric Scott Johnson (Louisville, KY)
Application Number: 13/456,792
International Classification: F24C 15/32 (20060101);