Cooking apparatus

Abstract

The utility model provides a kind of cooking equipment, air inlet is arranged along the height direction of inner bag, the back or side surface of inner bag and a flow guide back plate are jointly formed with the air inlet passage that is communicated with outlet of cross-flow fan, the side of flow guide back plate towards inner bag is formed with several flow guide components that several protrude towards inner bag, wherein, flow guide component is arranged along the height direction of flow guide back plate, the upside of flow guide component has top flow guide surface, the distance between top flow guide surface and inner bag decreases with the decrease of height, wherein, at least a part of each top flow guide surface extends to the position higher than corresponding air inlet, at least a part of top flow guide surface extends to air inlet. The utility model avoids the occurrence of local overcooking or undercooked situation during cooking on one hand, also solves the problem of low flow rate away from air inlet, improves the heat exchange efficiency of bottom. It can significantly improve the consistency of cooking, improve cooking effect. Structure is reliable and simplified, not easy to damage and convenient to replace.

Description

Technical Field

[0001] This utility model relates to cooking equipment. Background Technology

[0002] In existing cooking equipment, such as ovens and steam ovens, centrifugal fans or cross-flow fans are used to circulate hot air. The different air intake conditions at different air inlets determine the varying heating conditions at different heights within the inner cavity. Currently common air duct designs often fail to fully optimize airflow paths, resulting in dead zones or vortices in some areas. This leads to inconsistent air intake conditions at different air inlets, affecting heat exchange efficiency and the uniformity of food heating. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of poor heating efficiency and uneven heating in existing cooking equipment, and to provide a cooking device.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] A cooking appliance includes an inner pot, a cross-flow fan, and a plurality of air inlets located on the side or back of the inner pot, the air inlets being arranged along the height direction of the inner pot. The back or side of the inner pot, together with a flow guide plate, forms an air inlet channel communicating with the outlet of the cross-flow fan. The side of the flow guide plate facing the inner pot has a plurality of flow guide members protruding towards the inner pot, wherein the flow guide members are arranged along the height direction of the flow guide plate, and the upward-facing side of the flow guide members has a top flow guide surface. The distance between the top flow guide surface and the inner pot decreases as the height decreases, wherein at least a portion of each top flow guide surface extends to a position higher than the corresponding air inlet, and at least a portion of the top flow guide surface extends to the air inlet.

[0006] The airflow guiding components in this design can direct the airflow into the air inlet. By using multiple guiding components, the airflow at each inlet can be adjusted, improving the uniformity of airflow. In particular, it effectively addresses the issue of low airflow velocity far from the cross-flow fan, improving the heat exchange efficiency at the bottom. This prevents localized overcooking or undercooking, significantly improving cooking consistency and overall results. Simultaneously, the airflow guide backplate provides effective support, making it less susceptible to damage during transportation and use. Furthermore, the simple structure of the airflow guiding components facilitates installation.

[0007] Preferably, the downward-facing side of the flow guide member has a relatively inclined bottom flow guide surface, and the distance between the bottom flow guide surface and the inner liner increases as the height decreases. The bottom flow guide surface can form a buffer space below the flow guide member, thereby guiding the airflow from above downwards and further guiding it to the top flow guide surface below.

[0008] Preferably, a smooth surface connection is formed between the bottom guide surface of the upper guide member and the top guide surface of the adjacent lower guide member. This smooth connection allows for smoother downward flow of the airflow from above, reducing eddies and ensuring efficient airflow.

[0009] Preferably, at least a portion or all of the surface of the top guide surface and / or the bottom guide surface is curved. Curved surfaces can guide airflow more smoothly.

[0010] Preferably, the top guide surface extends along its trajectory to a position no higher than the lower end of the air inlet within the inner liner. This ensures that as much airflow as possible is indirectly guided to the air inlet, reducing energy loss from airflow collisions within the air intake duct.

[0011] Preferably, each of the air inlets extends integrally or is arranged separately along the width direction of the inner liner, and the air guide members extend integrally or are arranged separately along the width direction of the back plate. Thus, the air inlets and air guide members can guide airflow more uniformly in the width direction.

[0012] Preferably, guide plates are provided on both sides of the outlet and / or inlet of the cross-flow fan. The width of the outlet and / or inlet of the cross-flow fan is narrower than the width of the inner liner. The distance between the guide plates gradually increases from the direction closer to the outlet and / or inlet of the cross-flow fan towards the direction farther away from the outlet and / or inlet. The guide plates can more smoothly guide the gradual diffusion or convergence of airflow, reduce energy loss of airflow, and improve heating efficiency.

[0013] Preferably, the guide plate at the outlet of the cross-flow fan extends to at least both sides of the uppermost air inlet, and the width of the air inlet between the guide plates on both sides increases as the height decreases.

[0014] Preferably, a return air duct is also provided at the top of the inner liner, and a return air inlet is formed at the top of the inner liner. The return air inlet communicates with the inner cavity of the inner liner and the return air duct, and the inlet of the cross-flow fan is communicated with the return air duct. This allows for the utilization of the space above the inner liner, improving structural compactness.

[0015] Preferably, the shortest distance between each of the top guide surfaces and the inner liner decreases as the height of each top guide surface decreases, and at least a portion of the lower top guide surface extends beyond the entirety of the adjacent upper top guide surface in the vertical projection direction. This ensures that the lower guide member can also guide sufficient airflow into the corresponding air inlet.

[0016] The positive and progressive effects of this invention are as follows: Firstly, it avoids localized overcooking or undercooking during cooking; secondly, it solves the problem of low airflow velocity far from the air vent, thus improving the heat exchange efficiency at the bottom. This significantly improves the consistency of cooking and enhances the cooking effect. The structure is reliable and simplified, not easily damaged, and easy to replace. Attached Figure Description

[0017] Figure 1 This is a perspective view of a cooking device according to a preferred embodiment of the present invention.

[0018] Figure 2 This is an exploded view of the internal structure of a preferred embodiment of the present invention from a first angle.

[0019] Figure 3 This is a second-angle exploded view of the internal structure of a preferred embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the combination of the flow guide back plate and the inner liner in a preferred embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the flow guide backplate of a preferred embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the internal structure of the air inlet duct in a preferred embodiment of the present invention.

[0023] Inner liner 100

[0024] Rear wall 101

[0025] Top wall 102

[0026] Air inlet 110

[0027] Return air vent 120

[0028] Air intake duct 210

[0029] Return air duct 220

[0030] Crossflow fan 300

[0031] 400mm backplane

[0032] Flow guiding component 410

[0033] Top guide surface 411

[0034] Bottom guide surface 412

[0035] Guide board 500 Detailed Implementation

[0036] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0037] like Figures 1-5 As shown, this embodiment discloses a cooking device, including an inner pot 100, a cross-flow fan 300, and a plurality of air inlets 110 located on the side or back of the inner pot 100. The air inlets 110 are arranged along the height direction of the inner pot 100. The back or side of the inner pot 100 and a guide back plate 400 together form an air inlet duct 210 communicating with the outlet of the cross-flow fan 300. A plurality of guide members 410 protruding towards the inner pot 100 are formed on the side of the guide back plate 400 facing the inner pot 100. The guide members 410 are arranged along the height direction of the guide back plate 400. The upward side of the guide member 410 has a top guide surface 411. The distance between the top guide surface 411 and the inner pot 100 decreases as the height decreases. At least a portion of each top guide surface 411 extends to a position higher than the corresponding air inlet 110, and at least a portion of the top guide surface 411 extends to the air inlet 110.

[0038] The cooking device in this embodiment can be an oven, a steam oven, or similar equipment. A heating unit can be installed inside the cooking device at locations such as the inner liner 100, the air inlet duct 210, or the air return duct 220. The heating unit can be, for example, a heating element or a heating wire.

[0039] In this embodiment, the airflow guide component 410 can guide the airflow into the air inlet 110. By guiding multiple airflow guide components 410, the airflow into the corresponding air inlet 110 can be adjusted, improving the uniformity of airflow. In particular, it can solve the problem of low airflow velocity far from the cross-flow fan 300, improving the heat exchange efficiency at the bottom. This avoids local overcooking or undercooking, significantly improving the consistency of cooking and enhancing the cooking effect. At the same time, the airflow guide back plate 400 provides effective support and is not easily damaged during transportation or use. Furthermore, the airflow guide component 410 has a simple structure and is easy to install.

[0040] like Figures 2-5As shown, in a preferred embodiment, the downward-facing side of the flow guide member 410 has a relatively inclined bottom flow guide surface 412, and the distance between the bottom flow guide surface 412 and the inner liner 100 increases as the height decreases. The bottom flow guide surface 412 can form a buffer space below the flow guide member 410, thereby guiding the airflow from above downwards and further guiding it to the top flow guide surface 411 below.

[0041] like Figures 2-5 As shown, in a preferred embodiment, a smooth surface connection is formed between the bottom guide surface 412 of the upper guide member 410 and the top guide surface 411 of the adjacent lower guide member 410. This smooth connection allows for smoother downward flow of the airflow from above, reducing eddies and ensuring efficient airflow.

[0042] like Figures 2-5 As shown, in a preferred embodiment, at least a portion or all of the surface of the top guide surface 411 and / or the bottom guide surface 412 is curved. Curved surfaces can guide airflow more smoothly.

[0043] like Figures 2-5 As shown, in a preferred embodiment, the upper guide surface 411 extends along its trajectory to a position on the inner liner 100 that is no higher than the lower end of the air inlet 110. This ensures that as much airflow as possible is indirectly guided to the air inlet 110, reducing energy loss from airflow collisions within the air intake duct.

[0044] like Figures 2-5 As shown, in a preferred embodiment, each air inlet 110 extends integrally or is arranged separately along the width direction of the inner liner 100, and the air guide member 410 extends integrally or is arranged separately along the width direction of the back panel. Therefore, the air inlets 110 and the air guide member 410 can guide airflow more uniformly in the width direction.

[0045] like Figures 2-5 As shown, in a preferred embodiment, guide plates 500 are provided on both sides of the outlet and / or inlet of the cross-flow fan 300. The width of the outlet and / or inlet of the cross-flow fan 300 is narrower than the width of the inner liner 100. The distance between the guide plates 500 gradually increases from the direction closer to the outlet and / or inlet of the cross-flow fan 300 towards the direction farther away from the outlet and / or inlet of the cross-flow fan 300. The guide plates 500 can more smoothly guide the gradual diffusion or convergence of airflow, reduce energy loss of airflow, and improve heating efficiency.

[0046] like Figures 2-5As shown, in a preferred embodiment, the guide plate 500 at the outlet of the cross-flow fan 300 extends to at least both sides of the uppermost air inlet 110, and the width of the air inlet 110 between the guide plates 500 on both sides increases as the height decreases.

[0047] like Figures 2-5 As shown, in a preferred embodiment, a return air duct 220 is also provided at the top of the inner liner 100, and a return air inlet 120 is formed at the top of the inner liner 100. The return air inlet 120 is connected to the inner cavity of the inner liner 100 and the return air duct 220, and the inlet of the cross-flow fan 300 is connected to the return air duct 220. This allows the space above the inner liner 100 to be utilized, improving the structural compactness.

[0048] like Figures 2-5 As shown, in a preferred embodiment, the shortest distance between each top guide surface 411 and the inner liner 100 decreases as the height of each top guide surface 411 decreases, and at least a portion of the lower top guide surface 411 extends beyond the entirety of the adjacent upper top guide surface 411 in the vertical projection direction. This ensures that the lower guide member 410 can also guide sufficient airflow into the corresponding air inlet 110.

[0049] like Figure 6 As shown, in a further preferred embodiment, each top guide surface 411 is configured such that the closest distances between the top guide surface 411 of the three-layer guide member 410 and the inner liner 100 are d1, d2, and d3 from top to bottom, respectively, and the distance between the guide back plate 400 and the rear wall surface 101 of the inner liner 100 is d, satisfying the relationship d1≤d2≤d3≤d. Figure 6 As shown, in a further preferred embodiment, the top guide surface 411 and the bottom guide surface 412 can be arc surfaces. The radius of curvature of the top guide surface 411 satisfies R1≥R2≥R3, and the radius of curvature of the bottom guide surface 412 satisfies r1=d1 / 2, r2=d2 / 2, r3=d3 / 2.

[0050] This invention avoids the problem of some parts being overcooked or undercooked during cooking, and also solves the problem of low airflow velocity at areas far from the air vent, thus improving the heat exchange efficiency at the bottom. It significantly improves the consistency of cooking and enhances the cooking effect. The structure is reliable and simple, not easily damaged, and easy to replace.

[0051] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A cooking appliance, comprising an inner pot, a cross-flow fan, and a plurality of air inlets located on the side or back of the inner pot, characterized in that, The air inlets are arranged along the height direction of the inner liner. The back or side of the inner liner and a flow guide plate together form an air inlet channel communicating with the outlet of the cross-flow fan. The side of the flow guide plate facing the inner liner has a plurality of flow guide members protruding towards the inner liner. The flow guide members are arranged along the height direction of the flow guide plate. The upward side of the flow guide members has a top flow guide surface. The distance between the top flow guide surface and the inner liner decreases as the height decreases. At least a portion of each top flow guide surface extends to a position higher than the corresponding air inlet. At least a portion of the top flow guide surface extends to the air inlet.

2. The cooking apparatus as described in claim 1, characterized in that, The flow guide member has a relatively inclined bottom flow guide surface on its downward side, and the distance between the bottom flow guide surface and the inner liner increases as the height decreases.

3. The cooking apparatus as described in claim 2, characterized in that, A smooth surface connection is formed between the bottom guide surface of the upper guide member and the top guide surface of the adjacent lower guide member.

4. The cooking apparatus as described in claim 2, characterized in that, At least a portion or all of the surface of the top guide surface and / or the bottom guide surface is curved.

5. The cooking apparatus as described in claim 1, characterized in that, It extends along the trajectory of the top guide surface to a position in the inner liner that is no higher than the lower end of the air inlet.

6. The cooking apparatus as described in claim 1, characterized in that, Each of the air inlets extends integrally or is arranged separately along the width direction of the inner liner, and the air guiding member extends integrally or is arranged separately along the width direction of the back plate.

7. The cooking apparatus as described in claim 1, characterized in that, Guide plates are provided on both sides of the outlet and / or inlet of the cross-flow fan. The width of the outlet and / or inlet of the cross-flow fan is narrower than the width of the inner liner. The distance between the guide plates gradually increases from the direction closer to the outlet and / or inlet of the cross-flow fan toward the direction farther away from the outlet and / or inlet of the cross-flow fan.

8. The cooking apparatus as described in claim 7, characterized in that, The guide plate at the outlet of the cross-flow fan extends to at least both sides of the uppermost air inlet, and the width of the air inlet between the guide plates on both sides increases as the height decreases.

9. The cooking apparatus as described in claim 1, characterized in that, The top of the inner liner is also provided with a return air duct, and the top of the inner liner forms a return air inlet. The return air inlet is connected to the inner cavity of the inner liner and the return air duct, and the inlet of the cross-flow fan is connected to the return air duct.

10. The cooking apparatus according to any one of claims 1-9, characterized in that, The shortest distance between each of the top guide surfaces and the inner liner decreases as the height of each of the top guide surfaces decreases, and at least a portion of the lower top guide surface extends beyond the entirety of the adjacent upper top guide surface in the vertical projection direction.

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