An oven

Abstract

An oven includes a cabinet, a cooking chamber, a hot air assembly, a magnetron, a waveguide, a driving device and a stirrer. The cabinet has a cabinet door. The cooking chamber is disposed in the cabinet and has a cooking space. The hot air assembly is disposed in the cabinet and is configured to deliver hot air to the cooking space. The magnetron and the waveguide are disposed above the cooking chamber. The driving device is disposed in the waveguide. The stirrer is connected to the waveguide and the driving device and is configured to rotate under the action of the driving device. The stirrer includes a rotating rod, a first dispersion part, a second dispersion part and a connecting part. The rotating rod extends vertically and is connected to the driving device. The first dispersion part has a circular projection on a horizontal plane and is connected to a bottom end of the rotating rod. The second dispersion part has an annular projection on the horizontal plane and is disposed around and spaced from the first dispersion part. The connecting part is connected between the first dispersion part and the second dispersion part. The first dispersion part, the second dispersion part and the rotating rod are concentric.

Description

Technical Field

[0001] This utility model relates to the field of cooking appliance technology, and more specifically to an oven. Background Technology

[0002] Currently, some ovens integrate both convection heating and microwave heating functions to improve baking efficiency. However, these ovens still have some shortcomings in terms of heating evenness, which affects the baking results.

[0003] Therefore, an oven is needed to at least partially solve the above problems. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides an oven, the oven comprising:

[0006] The box body has a door;

[0007] A cooking room is provided inside the enclosure, the cooking room having a cooking space, and the cooking space communicating with the outside through the enclosure door;

[0008] A hot air assembly, disposed within the housing, is used to deliver hot air into the cooking space; and

[0009] A magnetron is disposed above the cooking chamber and is used to generate microwaves;

[0010] A waveguide is disposed above the cooking chamber and connected to the magnetron;

[0011] A driving device is disposed on the waveguide;

[0012] A stirrer, disposed above the cooking chamber, connected to the waveguide and the drive device, configured to rotate under the action of the drive device, the stirrer comprising:

[0013] A rotating rod extends vertically and is connected to the driving device; a first dispersing portion, the projection of which on a horizontal plane is circular, is connected to the bottom end of the rotating rod.

[0014] The second dispersion portion, whose projection on the horizontal plane is annular, is disposed around and spaced apart from the first dispersion portion.

[0015] A connecting portion, wherein the connecting portion connects the first dispersing portion and the second dispersing portion,

[0016] The first dispersion part, the second dispersion part, and the rotating rod are concentric.

[0017] The oven according to this application improves heating efficiency, making cooking faster, and also improves the uniformity of baking, thus enhancing the cooking effect.

[0018] Optionally, the projection of the connecting portion onto the horizontal plane is configured as a fan-shaped ring.

[0019] Optionally, the projection of the second dispersed portion onto the horizontal plane is configured as a partial annulus with a central angle of 175 to 185°.

[0020] Optionally, the stirrer includes at least two connecting portions spaced apart from each other, and the at least two connecting portions bisect the central angle of the second dispersing portion.

[0021] Optionally, the inner radius of the second dispersion portion is 52–58 mm;

[0022] The outer radius of the second dispersion part is 67-73 mm.

[0023] Optionally, the radius of the rotating rod is 5-9 mm, and the length of the rotating rod is 40-45 mm;

[0024] The radius of the first dispersion part is 16-20 mm.

[0025] Optionally, the bottom surfaces of the first dispersion portion, the second dispersion portion, and the connecting portion are constructed as curved surfaces that curve upwards in a direction away from the rotating rod.

[0026] Optionally, the bottom surfaces of the first dispersion portion, the second dispersion portion, and the connecting portion are constructed as a portion of the surface of a sphere whose radius coincides with the central axis of the rotating rod, and the radius of the sphere is 210-220 mm.

[0027] Optionally, the waveguide has a conductive cavity with a rectangular cross-section, a length of 255-265 mm, a width of 75-85 mm, and a thickness of 40-45 mm.

[0028] Optionally, a baffle is provided in the cooking chamber, the baffle is arranged vertically and spaced apart from the rear wall of the cooking chamber, the hot air assembly includes a hot air motor and a heating element, the heating element is disposed between the rear wall and the baffle, and the hot air motor is heated in the housing and extends into the space between the rear wall and the baffle;

[0029] The baffle is provided with an upper air outlet, an air inlet, and a lower air outlet from top to bottom. The cooking chamber is also provided with a horizontally arranged air distribution plate and a tray. The air distribution plate is located between the upper air outlet and the air inlet and has multiple air distribution holes. The tray is located between the lower air outlet and the air inlet and has ventilation holes. The space enclosed by the air distribution plate, the baffle, and the tray forms a cooking space.

[0030] A hot air channel is formed between the air distribution plate and the top wall of the cooking chamber, and between the tray and the bottom wall of the cooking chamber.

[0031] Optionally, the air distribution plate has a first side and a second side perpendicular to each other, and a plurality of air distribution holes form an array on the air distribution plate. The array includes a first row and a second row arranged parallel to the second side, wherein the number of air distribution holes in the first row is one more than the number of air distribution holes in the second row.

[0032] The array is centered on the air distribution plate in a direction parallel to the second side and offset in a direction parallel to the first side.

[0033] Optionally, the first side is connected to the sidewall, and the second side, whichever is closer to the array, is positioned further away from the baffle.

[0034] Optionally, the size of the first side is 273-277 mm, and the size of the second side is 310-315 mm;

[0035] The minimum distance between the center of the air distribution hole and the first side is 35-37 mm, and the minimum distance between the center of the air distribution hole and the second side is 21-23 mm.

[0036] The minimum distance between the center of the air distribution hole in the second row and the two first sides is 64-66 mm. Attached Figure Description

[0037] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0038] In the attached image:

[0039] Figure 1 This is a perspective view of an oven according to one embodiment of the present application;

[0040] Figure 2 This is a cross-sectional schematic diagram of an oven according to one embodiment of this application;

[0041] Figure 3 It shows Figure 1 Front view of the oven;

[0042] Figure 4 This is a perspective view of the mixer of an oven according to one embodiment of this application;

[0043] Figure 5 It shows Figure 4 Top view of the mixer;

[0044] Figure 6 for Figure 4 A cross-sectional view of the stirrer;

[0045] Figure 7 for Figure 6 A cross-sectional view of the stirrer along the AA direction;

[0046] Figure 8 This is a perspective view of a waveguide component of an oven according to one embodiment of this application;

[0047] Figure 9 for Figure 8 A cross-sectional view of the middle waveguide along the thickness direction;

[0048] Figure 10 for Figure 8 A cross-sectional view of the middle waveguide along the horizontal direction;

[0049] Figure 11 A perspective view of the air distribution plate of an oven according to one embodiment of this application; and

[0050] Figure 12 for Figure 11 A top view of the air vent panel.

[0051] Explanation of reference numerals in the attached figures:

[0052] 100: Oven; 101: Oven body; 102: Oven door

[0053] 103: Cooking Space 110: Cooking Room 111: Ceiling Wall

[0054] 112: Bottom wall; 113: Rear wall; 114: Side wall

[0055] 115: Range hood; 120: Baffle; 121: Upper hot air duct.

[0056] 122: Air inlet; 123: Lower air outlet; 124: Lower hot air duct.

[0057] 130: Pallet; 140: Air distribution plate; 141: Air distribution hole

[0058] 142: First side 143: Second side 144: First row

[0059] 145: Second row; 150: Magnetron; 160: Waveguide.

[0060] 161: Conducting cavity; 170: Drive device; 180: Stirrer

[0061] 181: Rotating rod; 182: First dispersion section; 183: Second dispersion section

[0062] 184: Connecting part; 190: Hot air assembly; 191: Hot air motor

[0063] 192: Heating element Detailed Implementation

[0064] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0065] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0066] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of a "second component," and the term "second component" does not imply the existence of a "first component." It should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and similar expressions used herein are for illustrative purposes only and are not intended to be limiting.

[0067] Now, refer to Figures 1 to 12Exemplary embodiments according to the present invention will be described in more detail below.

[0068] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 This application provides an oven 100, which includes a housing 101 with a door 102. A cooking chamber 110 is also provided within the housing 101, and the cooking space 103 is connected to the outside via the door 102. Specifically, the cooking chamber 110 has a top wall 111, a bottom wall 112, a rear wall 113, and two side walls 114. The bottom wall 112 is horizontally positioned, and the top wall 111 is located above the bottom wall 112. A portion of the top wall 111 is horizontally positioned, and its portion near the door 102 bends downwards.

[0069] The rear wall 113 and two side walls 114 are vertically arranged, and the side walls 114 are preferably perpendicular to and connected to the rear wall 113. The rear wall 113 and the two side walls 114 are both connected between the top wall 111 and the bottom wall 112. The oven 100 also includes a hot air assembly 190 and a microwave assembly. The hot air assembly 190 is disposed in the housing 101 and is used to deliver hot air into the cooking space 103. The microwave assembly is also disposed in the housing 101 and is located above the cooking chamber 110. The microwave assembly is used to generate and deliver microwaves to the cooking space 103.

[0070] A baffle 120 is also provided inside the cooking chamber 110. The baffle 120 is arranged vertically and spaced apart from the rear wall 113 of the cooking chamber 110. An air inlet 122 and a lower air outlet 123 are provided on the baffle 120. Figure 3 As shown in the diagram, the lower air outlet 123 is located below the air inlet 122. The cooking chamber 110 also includes a distribution panel 140 and a tray 130. The tray 130 is located between the lower air outlet 123 and the air inlet 122, and the distribution panel 140 is located above the tray 130, connecting the upper end of the baffle 120 and the bent end of the top wall 111. The distribution panel 140 has multiple air distribution holes 141, and the tray 130 has ventilation holes. The space enclosed by the distribution panel 140, the baffle 120, and the tray 130 forms the cooking space 103.

[0071] The hot air assembly 190 includes a hot air motor 191 and a heating element 192. The heating element 192 is disposed between the rear wall 113 and the baffle 120, while the hot air motor is disposed in the housing 101 and extends into the space between the rear wall 113 and the baffle 120. Thus, an upper hot air channel 121 is formed between the air distribution plate 140 and the top wall 111 of the cooking chamber 110, and a lower hot air channel 124 is formed between the tray 130 and the bottom wall 112 of the cooking chamber 110. Under the action of the hot air motor 191, the gas in the cooking space 103 enters the space between the baffle 120 and the rear wall 113 through the air inlet 122. After being heated by the heating element 192, the gas is divided into upper and lower paths and enters the cooking space 103 through the air distribution holes 141 of the air distribution plate 140 and the ventilation holes of the tray 130 through the upper hot air channel 121 and the lower hot air channel 124, respectively, forming a hot air impact circulation. In addition, an oil fume extractor 115 can be installed in the upper hot air duct 121. Specifically, the oil fume extractor 115 can be connected between the upper end of the top wall 111 and the upper end of the baffle 120, or between the top wall 111 and the end of the air distribution plate 140 away from the door 102.

[0072] The microwave assembly includes a magnetron 150, a waveguide 160, a drive unit 170, and a stirrer 180. The magnetron 150 is positioned above the cooking chamber 110 and is used to generate microwaves. The waveguide 160 is positioned above the cooking chamber 110 and connected to the magnetron 150. The drive unit 170 is positioned above the waveguide 160. The stirrer 180 is positioned above the cooking chamber 110, connected to the waveguide 160, and connected to the drive unit 170. The stirrer 180 is configured to rotate under the action of the drive unit 170. Thus, the microwaves generated by the magnetron 150 are conducted through the waveguide 160 to the stirrer 180, scattered into the cooking space 103 under the action of the stirrer 180, and dispersed throughout the entire cooking space 103 by the stirring action of the stirrer 180.

[0073] refer to Figure 4 , Figure 5 , Figure 6 and Figure 7 The stirrer 180 includes a rotating rod 181, a first dispersing section 182, a second dispersing section 183, and a connecting section 184. The rotating rod 181 extends vertically and is connected to the drive device 170. The first dispersing section 182 has a circular projection in the horizontal plane and is connected to the bottom end of the rotating rod 181. The second dispersing section 183 has an annular projection in the horizontal plane and is arranged around and spaced apart from the first dispersing section 182. The connecting section 184 connects the first dispersing section 182 and the second dispersing section 183. The first dispersing section 182, the second dispersing section 183, and the rotating rod 181 are concentric.

[0074] More specifically, the radius R1 of the first dispersing portion 182 is 16–20 mm. The projection of the second dispersing portion 183 onto the horizontal plane is a partial annulus with a central angle of 175–185°, preferably a semi-circular annulus of 180°. As one implementation, the inner radius R2 of the second dispersing portion 183 is 52–58 mm, preferably 55 mm. The outer radius R3 of the second dispersing portion 183 is 67–73 mm, preferably 55 mm. In other words, the radial dimension, or the ring width, of the second dispersing portion 183 is preferably 15 mm. The radius R4 of the rotating rod 181 is 5–9 mm, preferably 7 mm. The length of the rotating rod 181 is 40–45 mm, preferably 43 mm.

[0075] In a preferred embodiment, the projection of the connecting portion 184 onto the horizontal plane is configured as a fan-shaped ring. Exemplarily, the stirrer 180 includes at least two connecting portions 184 spaced apart from each other, and the at least two connecting portions 184 bisect the central angle of the second dispersing portion 183. In other words, as... Figure 5 In the embodiment shown, the central angle of the portion of the second dispersive portion 183 between the two connecting portions 184 is equal to the central angle of the portion on both sides of the two connecting portions 184.

[0076] In one implementation, the bottom surfaces of the first dispersing portion 182, the second dispersing portion 183, and the connecting portion 184 are constructed as curved surfaces that curve upwards in a direction away from the rotating rod 181. For example, the bottom surfaces of the first dispersing portion 182, the second dispersing portion 183, and the connecting portion 184 are constructed as partial surfaces of a sphere whose radius line coincides with the central axis of the rotating rod 181, and the radius R5 of the sphere is 210 to 220 mm, preferably 215 mm.

[0077] refer to Figure 8 , Figure 9 and Figure 10 The waveguide 160 has a conductive cavity 161, which has a rectangular cross-section. The length L of the conductive cavity 161 is 255–265 mm, preferably 261 mm. The width W of the conductive cavity 161 is 75–85 mm, preferably 80 mm. The thickness H of the conductive cavity 161 is 40–45 mm, preferably 43 mm.

[0078] Please refer to the following. Figure 11 and Figure 12 The air distribution plate 140 has a first side 142 and a second side 143 that are perpendicular to each other. The dimension L1 of the first side 142 is 273 to 277 mm, preferably 275 mm. The dimension L2 of the second side 143 is 310 to 315 mm, preferably 312 mm. The thickness of the air distribution plate 140 is preferably 2 mm.

[0079] Multiple air distribution holes 141 are arranged in an array on the air distribution plate 140. The array includes a first row 144 and a second row 145 arranged parallel to the second side 143. The first row 144 has one more air distribution hole 141 than the second row 145. In the first row 144 and the second row 145, the distance D1 between two adjacent air distribution holes 141 is 60mm.

[0080] Preferably, along a direction parallel to the first side 142, the second row 145 lies on the bisector between the two first rows 144. Along a direction parallel to the second side 143, the air distribution holes 141 on the second row 145 lie on the bisector between two adjacent air distribution holes 141 on the first row 144. In other words, the distance D2 between the first row 144 and the second row 145 is 30mm.

[0081] As an alternative implementation, the array is centered on the air distribution plate 140 in a direction parallel to the second side 143 and offset in a direction parallel to the first side 142. Preferably, the first side 142 is connected to the side wall 114, that is, the first side 142 is perpendicular to the baffle 120, and the second side 143 that is closer to the array is set away from the baffle 120.

[0082] Specifically, the minimum distance L1 between the center of the air distribution hole 141 and the two first sides 142 is 35-37 mm, that is, the minimum distance L1 between the air distribution holes 141 at both ends of the first row 144 and the first sides 142 is 35-37 mm, preferably 36 mm. The minimum distance between the center of the air distribution hole 141 and one of the two second sides 143 is 21-23 mm, that is, the closest distance L2 between the first row 144 and the second side 143 is 21-23 mm, preferably 22 mm. The second side 143, which is 22 mm away from the first row 144, is located near the door 102. The minimum distance L3 between the center of the air distribution holes 141 at both ends of the second row 145 and the two first sides 142 is 64-66 mm, preferably 65 mm.

[0083] The oven 100 according to this application improves heating efficiency, resulting in faster cooking, and also enhances baking uniformity, thus improving cooking results. Through the dimensional design of the waveguide cavity 160, the new configuration of the stirrer 180, and the improved dimensions and structure of the air distribution plate 140, microwave efficiency is increased by 5-7%, resulting in faster cooking; the heating standard deviation uniformity coefficient is reduced by 0.03-0.025, leading to more even heating of food.

[0084] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Features described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0085] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are only for illustrative purposes. This utility model is not limited to the above embodiments. Many variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. An oven, characterized in that, The oven includes: The box body has a door; A cooking room is provided inside the enclosure, the cooking room having a cooking space, and the cooking space communicating with the outside through the enclosure door; A hot air assembly is disposed in the housing and is used to deliver hot air into the cooking space. A magnetron is disposed above the cooking chamber and is used to generate microwaves; A waveguide is disposed above the cooking chamber and connected to the magnetron; A driving device is disposed on the waveguide; A stirrer, disposed above the cooking chamber, connected to the waveguide and the drive device, configured to rotate under the action of the drive device, the stirrer comprising: A rotating rod, which extends vertically and is connected to the driving device. The first dispersion portion, when projected onto the horizontal plane, is circular. The first dispersing part is connected to the bottom end of the rotating rod. The second dispersion portion, whose projection on the horizontal plane is annular, is disposed around and spaced apart from the first dispersion portion. A connecting portion, wherein the connecting portion connects the first dispersing portion and the second dispersing portion, The first dispersion part, the second dispersion part, and the rotating rod are concentric.

2. The oven according to claim 1, characterized in that, The projection of the connecting part onto the horizontal plane is a fan-shaped ring.

3. The oven according to claim 1, characterized in that, The projection of the second dispersed portion onto the horizontal plane is a partial annulus with a central angle of 175 to 185°.

4. The oven according to claim 3, characterized in that, The stirrer includes at least two connecting portions spaced apart from each other, and the at least two connecting portions bisect the central angle of the second dispersing portion.

5. The oven according to claim 1, characterized in that, The inner radius of the second dispersion section is 52–58 mm; The outer radius of the second dispersion part is 67-73 mm.

6. The oven according to claim 1, characterized in that, The radius of the rotating rod is 5-9 mm, and the length of the rotating rod is 40-45 mm; The radius of the first dispersion part is 16-20 mm.

7. The oven according to claim 1, characterized in that, The bottom surfaces of the first dispersion portion, the second dispersion portion, and the connecting portion are constructed as curved surfaces that curve upwards in a direction away from the rotating rod.

8. The oven according to claim 7, characterized in that, The bottom surfaces of the first dispersion portion, the second dispersion portion, and the connecting portion are constructed as a portion of the surface of a sphere whose radius line coincides with the central axis of the rotating rod, and the radius of the sphere is 210-220 mm.

9. The oven according to claim 1, characterized in that, The waveguide has a conductive cavity with a rectangular cross-section. The length of the conductive cavity is 255-265 mm, the width of the conductive cavity is 75-85 mm, and the thickness of the conductive cavity is 40-45 mm.

10. The oven according to claim 1, characterized in that, The cooking chamber is equipped with a baffle, which is arranged vertically and spaced apart from the rear wall of the cooking chamber. The hot air assembly includes a hot air motor and a heating element. The heating element is disposed between the rear wall and the baffle. The hot air motor is heated in the housing and extends into the space between the rear wall and the baffle. The baffle is provided with an upper air outlet, an air inlet, and a lower air outlet from top to bottom. The cooking chamber is also provided with a horizontally arranged air distribution plate and a tray. The air distribution plate is located between the upper air outlet and the air inlet and has multiple air distribution holes. The tray is located between the lower air outlet and the air inlet and has ventilation holes. The space enclosed by the air distribution plate, the baffle, and the tray forms a cooking space. A hot air channel is formed between the air distribution plate and the top wall of the cooking chamber, and between the tray and the bottom wall of the cooking chamber.

11. The oven according to claim 10, characterized in that, The air distribution plate has a first side and a second side that are perpendicular to each other, and a plurality of air distribution holes are arranged in an array on the air distribution plate. The array includes a first row and a second row arranged parallel to the second side, wherein the number of air distribution holes in the first row is one more than the number of air distribution holes in the second row. The array is centered on the air distribution plate in a direction parallel to the second side and offset in a direction parallel to the first side.

12. The oven according to claim 11, characterized in that, The first side is connected to the sidewall, and the second side, whichever is closer to the array, is positioned further away from the baffle.

13. The oven according to claim 11, characterized in that, The first side has a dimension of 273–277 mm, and the second side has a dimension of 310–315 mm. The minimum distance between the center of the air distribution hole and the first side is 35-37 mm, and the minimum distance between the center of the air distribution hole and the second side is 21-23 mm. The minimum distance between the center of the air distribution hole in the second row and the two first sides is 64-66 mm.

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