Cooking utensil

Abstract

The utility model discloses a cooking utensil, and relates to the technical field of household equipment. The cooking utensil comprises a machine body, a combustor and a driving assembly, the machine body is provided with a cooking cavity, a combustion cavity and a circulating flow channel, a first inlet of the combustion cavity communicates with the cooking cavity, a first outlet of the combustion cavity communicates with the circulating flow channel, a second outlet of the circulating flow channel communicates with the cooking cavity, and the combustor is arranged on the lower portion of the combustion cavity and used for heating airflow in the combustion cavity through fuel gas. The driving assembly drives air flow in the combustion cavity to enter the circulating flow channel from the first outlet; the combustion cavity comprises a flow guide face, the flow guide face surrounds the first outlet, the width of the flow guide face is gradually reduced in the direction from bottom to top, and the first outlet is formed below the flow guide face. According to the cooking utensil, it can be ensured that air around flame of the combustor has normal oxygen concentration, and combustion is made to be continuous and stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic equipment technical field especially relates to a cooking utensil. BACKGROUND

[0002] According to related technology, in the cooking utensil, the air in the cooking cavity and the hot air in the combustion cavity are usually sucked by the fan, the air in the cooking cavity and the hot air in the combustion cavity are mixed, and then the mixed air is sent back to the cooking cavity. But due to the limited suction of the fan, part of the low oxygen flow will stop in the combustion cavity, and along with the combustion of the burner, the low oxygen flow will flow to the flame of the burner, causing unstable combustion. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the related art at least to some extent.

[0004] Therefore, one purpose of the utility model is to provide a cooking utensil, which can ensure that the air around the burner flame has normal oxygen concentration, so that the combustion is stable.

[0005] The cooking utensil according to the utility model embodiment comprises a body, a burner and a driving assembly, the body is provided with a cooking cavity, a combustion cavity and a circulating flow channel, a first inlet of the combustion cavity is communicated with the cooking cavity and a first outlet is communicated with the circulating flow channel, a second outlet of the circulating flow channel is communicated with the cooking cavity, the burner is arranged at the lower part of the combustion cavity and is used for heating the airflow in the combustion cavity by using gas, and the driving assembly drives the airflow in the combustion cavity to pass into the circulating flow channel from the first outlet. Wherein, the combustion cavity comprises a flow guide surface, the flow guide surface surrounds the first outlet and is configured to gradually reduce the width in the direction from bottom to top, and the first outlet is arranged below the flow guide surface.

[0006] The cooking utensil according to the utility model embodiment can ensure that the air around the burner flame has normal oxygen concentration, so that the combustion is stable.

[0007] In addition, the cooking utensil according to the above embodiment of the utility model can also have the following additional technical features:

[0008] Optionally, the flow guide surface comprises a first side surface and a second side surface, the first side surface and the second side surface are opposite along the width direction of the combustion cavity, and the first side surface is arranged to be inclined towards the second side surface in the direction from bottom to top.

[0009] Optionally, the top wall of the combustion cavity comprises a first flow guide plate, and the inner side surface of the first flow guide plate is configured as the first side surface.

[0010] Optionally, the combustion chamber is provided with a third baffle plate, the third baffle plate extends in the width direction in a downward-upward direction, an upper edge of the third baffle plate is connected to the top wall of the combustion chamber, and a lower edge of the third baffle plate is connected to the first side wall of the combustion chamber.

[0011] Optionally, the second side surface is inclined toward the first side surface in a downward-upward direction.

[0012] Optionally, the top wall of the combustion chamber comprises a first baffle plate and a second baffle plate, the first baffle plate and the second baffle plate are distributed along the width direction, an inner side surface of the first baffle plate is configured as the first side surface, and an inner side surface of the second baffle plate is configured as the second side surface.

[0013] Optionally, the combustion chamber is provided with a third baffle plate and a fourth baffle plate, the third baffle plate and the fourth baffle plate are distributed along the width direction, the third baffle plate is inclined toward the fourth baffle plate in a downward-upward direction, the fourth baffle plate is inclined toward the third baffle plate in a downward-upward direction, an upper edge of the third baffle plate is connected to the top wall of the combustion chamber, and a lower edge of the third baffle plate is connected to the first side wall of the combustion chamber, an upper edge of the fourth baffle plate is connected to the top wall of the combustion chamber, and a lower edge of the fourth baffle plate is connected to the second side wall of the combustion chamber.

[0014] Optionally, the baffle surface further comprises a top surface, the top surface extends along the width direction, and the first side surface and the second side surface are connected to two side edges of the top surface along the width direction, respectively.

[0015] Optionally, an upper edge of the first side surface and an upper edge of the second side surface are connected.

[0016] Optionally, the first side surface is configured as a plane or an arc surface, and the second side surface is configured as a plane or an arc surface.

[0017] Optionally, the baffle surface is configured as a curved surface that is convex upward at a middle portion along the width direction of the combustion chamber, and the curved surface is configured as a circular arc, an elliptical arc, a parabolic curve, a triangle, or a trapezoid.

[0018] Optionally, the first outlet is arranged at a middle position of the combustion chamber in an up-down direction, and / or the first outlet is arranged at a middle position of the combustion chamber in a width direction.

[0019] Optionally, the combustion chamber and the cooking chamber are distributed along an axis direction of the first outlet, and the first outlet is arranged on a wall surface of the combustion chamber that faces away from the cooking chamber.

[0020] Optionally, the first inlet is arranged on a wall surface between the combustion chamber and the cooking chamber, and is arranged opposite to the combustion chamber along the axis direction of the first outlet.

[0021] Optionally, the driving assembly comprises a driving impeller arranged in the circulation flow channel and opposite to the first outlet.

[0022] Optionally, the distance L1 between the center of the first outlet and the guide surface satisfies: L1≤125mm. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a schematic view of a cooking appliance in some embodiments of the present application.

[0024] Figure 2 is a cross-sectional view of the cooking appliance along the front-rear direction in some embodiments of the present application.

[0025] Figure 3 is a cross-sectional view of the cooking appliance along the left-right direction in some embodiments of the present application.

[0026] Figure 4 is Figure 3 axonometric view of an embodiment.

[0027] Figure 5 is a schematic view of the distance between the first outlet and the guide surface in some embodiments of the present application.

[0028] REFERENCE NUMERALS:

[0029] The cooking appliance 100, the body 10, the cooking cavity 11, the combustion cavity 12, the first inlet 121, the first outlet 122, the circulation flow channel 13, the second outlet 131, the burner 20, the driving assembly 30, the guide surface 40, the first side surface 41, the second side surface 42, the top surface 43, the third guide plate 50, the fourth guide plate 60. DETAILED DESCRIPTION

[0030] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0031] The present application provides a cooking appliance 100, which can ensure that the air around the burner 20 has a normal oxygen concentration, so that the combustion is stable.

[0032] As Figures 1 to 5 , according to the cooking appliance 100 of the embodiments of the present application, the cooking appliance 100 comprises a body 10, a burner 20 and a driving assembly 30.

[0033] The body 10 is provided with a cooking cavity 11, a combustion cavity 12 and a circulating flow channel 13, the combustion cavity 12 has a first inlet 121 and a first outlet 122, the first inlet 121 of the combustion cavity 12 communicates with the cooking cavity 11, and the first outlet 122 communicates with the circulating flow channel 13, the circulating flow channel 13 has a second outlet 131, the second outlet 131 of the circulating flow channel 13 communicates with the cooking cavity 11, the burner 20 is arranged at the lower part of the combustion cavity 12, and is used for heating the airflow in the combustion cavity 12 by using gas, and the driving assembly 30 drives the airflow in the combustion cavity 12 to pass into the circulating flow channel 13 from the first outlet 122; it can be understood that the driving assembly 30 can drive the airflow to flow in the cooking cavity 11, the combustion cavity 12 and the circulating flow channel 13 in a virtual circulation manner, so that the effect of cooking food in the cooking cavity 11 is realized.

[0034] However, with the operation of the cooking utensil 100, due to the limited airflow driving effect of the driving assembly 30, part of the low-oxygen air is gathered in the upper part of the combustion cavity 12, when the burner 20 burns, the flame of the burner 20 consumes the combustion-supporting air, and a negative pressure is generated around the flame, the low-oxygen space in the upper part of the combustion cavity 12 is sucked to the vicinity of the flame, so that the combustion-supporting space around the flame of the burner 20 is diluted, and the flame is separated from the flame, so that the burner 20 does not burn.

[0035] Therefore, the combustion cavity 12 can include a flow guide surface 40 surrounding the first outlet 122, it can be understood that the flow guide surface 40 can be arranged around the first outlet 122, and the flow guide surface 40 can also extend in the direction surrounding the first outlet 122, so that the arrangement form and shape of the flow guide surface 40 are similar to the shape of the suction range of the driving assembly 30 at the first outlet 122, the low-oxygen airflow is conveniently sucked by the driving assembly 30, and the influence of the low-oxygen airflow on the combustion of the burner 20 is avoided.

[0036] Further, the low-oxygen airflow is gathered in the upper part of the combustion cavity 12, especially in the upper corner of the combustion cavity 12, therefore, the flow guide surface 40 can be configured to gradually reduce in width in the direction from bottom to top, and the first outlet 122 is arranged below the flow guide surface 40; in this way, the closer the flow guide surface 40 is to the upper part of the combustion cavity 12, the smaller the width is, so as to reduce the gathering space of the low-oxygen air entering the combustion cavity 12, and the low-oxygen air can be guided to the first outlet 122, so that the low-oxygen airflow in the combustion cavity 12 can be sucked by the driving assembly 30 through the first outlet 122, and the gathering of the low-oxygen airflow in the combustion cavity 12 is avoided, and the influence of the low-oxygen airflow on the combustion of the burner 20 is avoided.

[0037] Therefore, the cooking utensil 100 according to the embodiment of the present application can ensure that the air around the flame of the burner 20 has a normal oxygen concentration, so that the combustion is stable.

[0038] As Figure 2In some embodiments of the utility model, the flow guide surface 40 includes a first side 41 and a second side 42, the first side 41 and the second side 42 are opposite along the width direction of the combustion chamber 12;

[0039] Among them, the arrangement mode of the first side 41 and the second side 42 has multiple; in the first example, the first side 41 is inclined and the second side 42 extends up and down; in the second example, the second side 42 is inclined and the first side 41 extends up and down; in the third example, the first side 41 and the second side 42 are both inclined; to form the structure that the width gradually reduces in the direction from bottom to top.

[0040] Need to explain, the width direction can be Figure 2 The left and right direction as shown.

[0041] According to the first example, the first side 41 is inclined to the second side 42 in the direction from bottom to top, and the second side 42 extends along the up and down direction; in this way, by the setting of the first side 41, the gathering space of the low oxygen flow in the upper part of the combustion chamber 12 can be reduced, and under the flow guiding effect of the first side 41 and the second side 42, the low oxygen flow in the combustion chamber 12 is guided to the first outlet 122 of the combustion chamber 12, avoiding the low oxygen flow flowing to the burner 20 and affecting the combustion of the burner 20.

[0042] According to the second example, the second side 42 is inclined to the first side 41 in the direction from bottom to top, and the first side 41 extends along the up and down direction; in this way, by the setting of the second side 42, the gathering space of the low oxygen flow in the upper part of the combustion chamber 12 can be reduced, and under the flow guiding effect of the first side 41 and the second side 42, the low oxygen flow in the combustion chamber 12 is guided to the first outlet 122 of the combustion chamber 12, avoiding the low oxygen flow flowing to the burner 20 and affecting the combustion of the burner 20.

[0043] According to the third example, the first side 41 is inclined to the second side 42 in the direction from bottom to top, and the second side 42 is inclined to the first side 41 in the direction from bottom to top; in this way, by the setting of the first side 41 and the second side 42, the gathering space of the low oxygen flow in the upper part of the combustion chamber 12 can be reduced, and under the flow guiding effect of the first side 41 and the second side 42, the low oxygen flow in the combustion chamber 12 is guided to the first outlet 122 of the combustion chamber 12, avoiding the low oxygen flow flowing to the burner 20 and affecting the combustion of the burner 20.

[0044] According to the first example or the third example, the first side 41 can be composed of a structure that is formed separately from the inner wall of the combustion chamber 12; or, the first side 41 can be composed of at least a part of the inner wall of the combustion chamber 12, and the following implementation modes are specifically provided.

[0045] Implementation 1

[0046] The top wall of the combustion cavity 12 comprises a first flow guide plate, the inner side of the first flow guide plate is configured as the first side 41; it can be understood that at least a portion of the top wall of the combustion cavity 12 forms the first flow guide plate, the lower side of the first flow guide plate is configured as the first side 41, and the inclination of the first side 41 and the cooperation of the second side 42 can reduce the accumulation space of the low-oxygen gas flow at the upper portion of the combustion cavity 12 and guide the low-oxygen gas flow to flow to the first outlet 122, thereby improving the combustion efficiency of the burner 20.

[0047] Embodiment 2

[0048] As Figure 2 The third flow guide plate 50 is arranged in the combustion cavity 12, the third flow guide plate 50 extends in the width direction in the direction from bottom to top, the upper edge of the third flow guide plate 50 is connected to the top wall of the combustion cavity 12, and the lower edge is connected to the first side wall of the combustion cavity 12; it can be understood that the third flow guide plate 50 is formed separately from the inner wall of the combustion cavity 12, the lower side of the third flow guide plate 50 is configured as the first side 41, and the inclination of the first side 41 and the cooperation of the second side 42 can reduce the accumulation space of the low-oxygen gas flow at the upper portion of the combustion cavity 12 and guide the low-oxygen gas flow to flow to the first outlet 122, thereby improving the combustion efficiency of the burner 20.

[0049] According to a third example, the first side 41 and the second side 42 can be formed separately from the inner wall of the combustion cavity 12; or the first side 41 and the second side 42 can be formed by at least a portion of the combustion cavity 12, and the following embodiments are specifically provided.

[0050] Embodiment 3

[0051] The top wall of the combustion cavity 12 comprises a first flow guide plate and a second flow guide plate, the first flow guide plate and the second flow guide plate are distributed in the width direction, the inner side of the first flow guide plate is configured as the first side 41, and the inner side of the second flow guide plate is configured as the second side 42; it can be understood that at least a portion of the top wall of the burner 20 forms the first flow guide plate and the second flow guide plate, the lower side of the first flow guide plate is configured as the first side 41, and the lower side of the second flow guide plate is configured as the second side 42, and the inclination of the first side 41 and the cooperation of the second side 42 can reduce the accumulation space of the low-oxygen gas flow at the upper portion of the combustion cavity 12 and guide the low-oxygen gas flow to flow to the first outlet 122, thereby improving the combustion efficiency of the burner 20.

[0052] Embodiment 4

[0053] As Figure 2The third guide plate 50 and the fourth guide plate 60 are distributed along the width direction, the third guide plate 50 is inclined towards the fourth guide plate 60 in the direction from bottom to top, the fourth guide plate 60 is inclined towards the third guide plate 50 in the direction from bottom to top, the upper edge of the third guide plate 50 is connected with the top wall of the combustion cavity 12, and the lower edge is connected with the first side wall of the combustion cavity 12, the upper edge of the fourth guide plate 60 is connected with the top wall of the combustion cavity 12, and the lower edge is connected with the second side wall of the combustion cavity 12; it can be understood that the third guide plate 50 is formed separately with the inner wall surface of the combustion cavity 12, the fourth guide plate 60 is formed separately with the inner wall surface of the burner 20, the lower side surface of the third guide plate 50 is configured as the first side surface 41, the lower side surface of the fourth guide plate 60 is configured as the second side surface 42, and through the inclined arrangement and cooperation of the first side surface and the second side surface 42, the gathering space of the low-oxygen gas flow at the upper part of the combustion cavity 12 can be reduced, and the low-oxygen gas flow is guided to flow to the first outlet 122, so that the combustion efficiency of the burner 20 is improved.

[0054] As Figure 2 In some embodiments of the utility model, the guide surface 40 further includes a top surface 43, the top surface 43 extends along the width direction, and the first side surface 41 and the second side surface 42 are respectively connected with the two side edges of the top surface 43 along the width direction; in this way, the first side surface 41, the top surface 43 and the second side surface 42 can be arranged along the direction around the first outlet 122, and the top surface 43 serves as the transition surface between the first side surface 41 and the second side surface 42, so that the structure of the combustion cavity 12 is smooth, and the interference between the wall surface of the combustion cavity 12 and other structural members of the cooking utensil 100 is reduced. The top surface 43 can serve as the support surface of other structural members in the cooking utensil 100, so that the structural stability of the cooking utensil 100 is improved.

[0055] In some embodiments of the utility model, the upper edge of the first side surface 41 and the upper edge of the second side surface 42 are connected; in this way, the first side surface 41 and the second side surface 42 are connected to form a triangle, so that the gathering space of the low-oxygen gas flow at the upper part of the combustion cavity 12 can be reduced, and the low-oxygen gas flow is guided to flow to the first outlet 122, so that the combustion efficiency of the burner 20 is improved.

[0056] As Figure 2In some embodiments of the utility model, first side 41 is flat, so that the shape of combustion cavity 12 is relatively flat, avoiding interference between combustion cavity 12 and other structural members of cooking utensil 100;Or, first side 41 is arc, so that the shape of combustion cavity 12 is adapted to the peripheral shape of first outlet 122, facilitating drive assembly 30 to suck the low-oxygen gas flow in combustion cavity 12 through first outlet 122;Second side 42 is flat, so that the shape of combustion cavity 12 is relatively flat, avoiding structural interference between combustion cavity 12 and other structural members of cooking utensil 100;Or, second side 42 is arc, so that the shape of combustion cavity 12 is adapted to the peripheral shape of first outlet 122, facilitating drive assembly 30 to suck the low-oxygen gas flow in combustion cavity 12 through first outlet 122.

[0057] As Figure 2 In some embodiments of the utility model, the flow guide surface 40 is set as a curved surface that is convex upward at the middle of the width direction of the combustion cavity 12, and the curved surface is set as a circular arc, an elliptical arc, a parabolic line, a triangle or a trapezoid;In this way, the combustion cavity 12 can be formed into a structure that is narrow at the top and wide at the bottom, so as to reduce the low-oxygen gas flow retention space at the upper part of the combustion cavity 12, and under the guidance of the flow guide surface 40, the low-oxygen gas flow entering the combustion cavity 12 can be guided to the first outlet 122, facilitating the drive assembly 30 to drive the low-oxygen gas flow to circulate in the cooking utensil 100, avoiding the low-oxygen gas flow flowing to the burner 20 due to the suction force generated by the flame, resulting in the lack of oxygen in the combustion cavity 12 and the flame separation phenomenon.

[0058] As Figure 2 And Figure 5 In some embodiments of the utility model, the first outlet 122 is arranged at the middle position of the combustion cavity 12 in the up-down direction, so that the first outlet 122 can suck the low-oxygen gas flow at the upper and lower parts of the combustion cavity 12, avoiding the low-oxygen gas flow flowing to the burner 20 and affecting the combustion of the burner 20.

[0059] As Figure 2 And Figure 5 In some other embodiments of the utility model, the first outlet 122 is arranged at the middle position of the combustion cavity 12 in the width direction, so that the first outlet 122 can suck the low-oxygen gas flow at the left and right parts of the combustion cavity 12, avoiding the low-oxygen gas flow flowing to the burner 20 and affecting the combustion of the burner 20.

[0060] As Figure 2 And Figure 5In still some embodiments of the present utility model, the first outlet 122 is arranged at the middle position of the combustion cavity 12 along the up-down direction, and the first outlet 122 is arranged at the middle position of the combustion cavity 12 along the width direction, so that the first outlet 122 can easily suck the low-oxygen gas flow from the upper part, the lower part, the left part and the right part of the combustion cavity 12, and avoid the low-oxygen gas flow flowing to the burner 20, which can cause the low-oxygen gas flow to dilute the combustion-supporting space near the burner 20 and affect the combustion of the burner 20.

[0061] As Figure 3 Uh Figure 4 In some embodiments of the present utility model, the combustion cavity 12 and the cooking cavity 11 are distributed along the axis direction of the first outlet 122, and the first outlet 122 is arranged on the wall surface of the combustion cavity 12 away from the cooking cavity 11; the first inlet 121 is arranged on the wall surface between the combustion cavity 12 and the cooking cavity 11 and is arranged opposite to the combustion cavity 12 along the axis direction of the first outlet 122, so that the air flow circulation can be formed in the cooking appliance 100 to realize the cooking function of the cooking appliance 100.

[0062] Specifically, the combustion cavity 12 and the cooking cavity 11 are distributed along the axis direction of the first outlet 122, and the first outlet 122 is arranged on the wall surface of the combustion cavity 12 away from the cooking cavity 11, so that the air flow circulation can be formed; if the first outlet 122 is arranged on the wall surface of the combustion cavity 12 close to the cooking cavity 11 or on other wall surfaces of the combustion cavity 12, the air flow entering from the first inlet 121 will be quickly discharged from the first outlet 122, and the high-temperature air flow in the combustion cavity 12 cannot be taken away well, which affects the cooking effect of the cooking cavity 11.

[0063] It should be explained that the axis direction of the first outlet 122 can be Figures 1 to 5 The front-rear direction shown in the figure.

[0064] As Figure 3 And Figure 4 In some embodiments of the present utility model, the driving assembly 30 comprises a driving impeller, the driving impeller is arranged in the circulation flow channel 13 and is arranged opposite to the first outlet 122, so that the driving impeller can suck the air flow in the combustion cavity 12 through the first outlet 122 to improve the air flow driving effect; if the driving impeller is not arranged opposite to the first outlet 122, the driving impeller will be blocked by the cavity wall, thereby affecting the air flow driving of the driving impeller. Furthermore, the driving impeller is arranged in the circulation flow channel 13, so that the driving impeller and the burner 20 are located in two spaces respectively, which can avoid the driving impeller being damaged when the burner 20 works.

[0065] As Figure 5In some embodiments of the utility model, the distance L1 between the center of the first outlet 122 and the flow guide surface 40 satisfies: L1≤125mm; specifically, the driving assembly 30 can be a centrifugal impeller, and is arranged opposite to the first outlet 122, the radius range of the driving assembly 30 for sucking air through the first outlet 122 is about 125mm, therefore, the distance L1 between the center of the first outlet 122 and the flow guide surface 40 can be≤125mm, so that the driving assembly 30 can suck the low-oxygen air flow in the combustion chamber 12 through the first outlet 122, and the low-oxygen air flow can be avoided from affecting the combustion of the burner 20; wherein, L1 can be 125mm, 120mm, 110mm, 100mm, 75mm or 50mm, etc.

[0066] According to the related technology, in the gas oven, the air in the cooking cavity 11 and the hot air in the combustion chamber 12 are usually sucked by the fan (i.e. the driving assembly 30) to mix the air in the cooking cavity 11 and the hot air in the combustion chamber 12, and then the mixed air is sent back to the cooking cavity 11. This method improves the thermal efficiency by reheating the air in the cooking cavity 11. The fan for circulation is installed on one side close to the center of the combustion chamber 12 to improve the uniformity of the cooking cavity 11.

[0067] However, the diameter of the fan is smaller than the length of the burner 20, which means that although the suction force in the central area is strong, the air will stagnate in the corners of the upper part of the combustion chamber 12. In addition, these stagnant air is in the same low-oxygen state as the air in the cooking cavity 11. The flame of the lower burner 20 is sucked into the middle side of the fan, so the secondary air around it is also sucked in, so the low-oxygen air stagnating in the upper part will mix with the combustion-supporting air, causing the secondary air to be low in oxygen, causing the flame to deviate, and thus causing a non-combustion state.

[0068] According to the embodiments of the utility model, the space of the upper low-oxygen air is removed, so that the low-oxygen air can be prevented from flowing downward to the burner 20, and this distance is reduced to the distance that can be sucked by the fan (i.e. L1≤125mm), so that it cannot flow downward. In this way, the air around the flame of the burner 20 can be ensured to have a normal oxygen concentration, so that the combustion can be continuous and stable.

[0069] In the description of the utility model, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0070] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can indirectly connect through intermediate medium, can be the communication of two element internals or the interaction of two elements, unless another definite limitation.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0071] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly contacted through intermediate medium.Moreover, the first feature "over", "above" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than that of the second feature.The first feature "under", "below" and "on" the second feature can be that the first feature is directly below or obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than that of the second feature.

[0072] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and the skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A cooking appliance characterized by, The cooking device comprises: a body (10) provided with a cooking cavity (11), a combustion cavity (12) and a circulation flow channel (13), a first inlet (121) of the combustion cavity (12) communicating with the cooking cavity (11) and a first outlet (122) communicating with the circulation flow channel (13), a second outlet (131) of the circulation flow channel (13) communicating with the cooking cavity (11); a burner (20) arranged at a lower portion of the combustion cavity (12) for heating air flow in the combustion cavity (12) by using gas; a driving assembly (30) for driving the air flow in the combustion cavity (12) to pass from the first outlet (122) into the circulation flow channel (13); wherein the combustion cavity (12) comprises a flow guide surface (40) surrounding the first outlet (122) and configured to gradually decrease in width in a direction from bottom to top, and the first outlet (122) is arranged below the flow guide surface (40).

2. The cooking appliance of claim 1, wherein, The flow guide surface (40) comprises a first side surface (41) and a second side surface (42) opposite to each other along a width direction of the combustion cavity (12), and the first side surface (41) is arranged to be inclined toward the second side surface (42) in a direction from bottom to top.

3. The cooking appliance of claim 2, wherein, A top wall of the combustion cavity (12) comprises a first flow guide plate, and an inner side surface of the first flow guide plate is configured as the first side surface (41). Alternatively, a third flow guide plate (50) is arranged in the combustion cavity (12), the third flow guide plate (50) extends in the width direction in a direction from bottom to top, an upper edge of the third flow guide plate (50) is connected to a top wall of the combustion cavity (12), and a lower edge is connected to a first side wall of the combustion cavity (12).

4. The cooking appliance of claim 2, wherein, The second side surface (42) is arranged to be inclined toward the first side surface (41) in a direction from bottom to top.

5. The cooking appliance of claim 4, wherein, A top wall of the combustion cavity (12) comprises a first flow guide plate and a second flow guide plate, the first flow guide plate and the second flow guide plate are distributed along the width direction, an inner side surface of the first flow guide plate is configured as the first side surface (41), and an inner side surface of the second flow guide plate is configured as the second side surface (42). Alternatively, a third flow guide plate (50) and a fourth flow guide plate (60) are arranged in the combustion cavity (12), the third flow guide plate (50) and the fourth flow guide plate (60) are distributed along the width direction, the third flow guide plate (50) is inclined toward the fourth flow guide plate (60) in a direction from bottom to top, the fourth flow guide plate (60) is inclined toward the third flow guide plate (50) in a direction from bottom to top, an upper edge of the third flow guide plate (50) is connected to a top wall of the combustion cavity (12), and a lower edge is connected to a first side wall of the combustion cavity (12), an upper edge of the fourth flow guide plate (60) is connected to the top wall of the combustion cavity (12), and a lower edge is connected to a second side wall of the combustion cavity (12).

6. The cooking appliance according to any one of claims 2-5, wherein, The flow guide surface (40) further comprises a top surface (43) extending along the width direction, and the first side surface (41) and the second side surface (42) are connected to two side edges of the top surface (43) along the width direction respectively. Alternatively, the upper edge of the first side surface (41) and the upper edge of the second side surface (42) are connected.

7. The cooking appliance according to any one of claims 2-5, wherein, The first side surface (41) is provided as a plane or an arc surface; and the second side surface (42) is provided as a plane or an arc surface.

8. The cooking appliance of claim 1, wherein, The flow guide surface (40) is provided as a curved surface protruding upward at the middle part along the width direction of the combustion chamber (12), and the curved surface is provided as a circular arc, an elliptical arc, a parabolic curve, a triangle or a trapezoid.

9. The cooking appliance of any one of claims 1-5, wherein, The first outlet (122) is arranged at the middle position of the combustion chamber (12) along the up-down direction; and / or, the first outlet (122) is arranged at the middle position of the combustion chamber (12) along the width direction.

10. The cooking appliance of any one of claims 1-5, wherein, The combustion chamber (12) and the cooking chamber (11) are distributed along the axis direction of the first outlet (122), and the first outlet (122) is arranged at the wall surface of the combustion chamber (12) facing away from the cooking chamber (11).

11. The cooking appliance of claim 10, wherein, The first inlet (121) is arranged at the wall surface between the combustion chamber (12) and the cooking chamber (11), and is arranged opposite to the combustion chamber (12) along the axis direction of the first outlet (122).

12. The cooking appliance of any one of claims 1-5, wherein, The driving assembly (30) comprises a driving impeller arranged in the circulating flow channel (13) and arranged opposite to the first outlet (122).

13. The cooking appliance of claim 1, wherein, The distance L1 between the center of the first outlet (122) and the flow guide surface (40) satisfies: L1≤125mm.

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