Air duct components and integrated cooktop

Abstract

This invention provides an air duct assembly and an integrated stove. The air duct assembly includes: a first pipe group including an air inlet; a first reversing joint including a first interface and a second interface facing different directions, the first interface being connected to the first pipe group; a second pipe group connected to the second interface, including an air outlet; and a flow divider disposed in the first pipe group for dispersing the airflow directed towards the first reversing joint. By setting this flow divider, the operating noise of the air duct assembly can be effectively reduced, thus solving the aforementioned technical problems of high operating noise and poor user experience. This achieves the technical effects of optimizing the flow field characteristics of the air duct assembly, reducing the aerodynamic noise of the air duct assembly, improving the practicality of the air duct assembly, and enhancing the user experience.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances technology, and more specifically, to a duct assembly and an integrated stove. Background Technology

[0002] In related technologies, integrated cooktops with internal circulation require the treated fumes to be returned to the indoor environment through a flue, so the exhaust duct is mostly located indoors. However, during actual operation, the exhaust duct generates noticeable turbulence noise and impact noise, interfering with users' daily lives and thus compromising their user experience.

[0003] Therefore, designing a duct component that can solve the above-mentioned pain points has become an urgent technical problem to be solved. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, the first aspect of the present invention provides an air duct assembly.

[0006] The second aspect of this invention proposes an integrated stove.

[0007] In view of this, according to a first aspect of the present invention, a duct assembly is provided, the duct assembly comprising: a first duct group including an air inlet; a first reversing joint including a first interface and a second interface facing different directions, the first interface being connected to the first duct group; a second duct group connected to the second interface and including an air outlet; and a flow divider disposed in the first duct group for dispersing the airflow flowing toward the first reversing joint.

[0008] This application defines a duct component for use in an internal circulation integrated stove. The internal circulation integrated stove can draw the oil fumes generated on it into the interior of the integrated stove, and after purifying the oil fumes, it can be discharged back to the user's indoor environment through the duct component to achieve the internal circulation function, eliminating the need for a complex indoor and outdoor exhaust structure.

[0009] In related technologies, to meet the basic requirement of internal circulation exhaust, the flue of internal circulation integrated cooktops is mostly located indoors, such as inside the cooktop. This means that noise from inside the flue is directly transmitted to the user's environment. However, during actual operation, the high-speed flowing fumes create vortices and backflow within the flue. This not only increases the resistance of the entire flue system but also affects the flow rate, and the vortices and backflow generate significant turbulent noise. Simultaneously, the high-speed flowing fumes impact the inner wall of the flue at bends, causing noticeable impact noise. All of this noise directly interferes with the user's daily life, resulting in the technical problems of high operating noise and poor user experience associated with internal circulation integrated cooktops.

[0010] In this application, the duct assembly includes a first pipe group, a first reversing connector, and a second pipe group. The first pipe group has an air inlet for airflow into the duct assembly, and the second pipe group has an air outlet for airflow discharge. The first reversing connector includes a first interface and a second interface. The first interface connects to the first pipe group, and the second interface connects to the second pipe group. Airflow within the first pipe group flows into the second pipe group via the first and second interfaces. The first and second interfaces have different orientations to allow the airflow to be redirected within the first reversing connector, thereby delivering the airflow to a designated area.

[0011] Building upon this, the duct assembly also includes a flow divider, which is located within the first pipe group. Airflow from the inlet to the first interface is diverted and slowed upon contact with the flow divider before flowing into the first reversing joint. By including the flow divider, the airflow can be dispersed, adjusting the flow field characteristics within the first pipe group and reducing the likelihood of vortices and backflow, thereby reducing turbulent noise caused by these issues. Furthermore, the flow divider reduces the airflow velocity while dispersing the airflow, thus reducing the impact on the inner wall of the first reversing joint and lowering the impact noise generated there. Therefore, this flow divider effectively reduces the operating noise of the duct assembly, addressing the aforementioned problems of high operating noise and poor user experience. Ultimately, this optimizes the flow field characteristics of the duct assembly, reduces aerodynamic noise, improves its practicality, and enhances the user experience.

[0012] By incorporating a flow divider, the impact of airflow on the first reversing joint is reduced. This flow divider also effectively reduces energy loss within the duct assembly, thereby decreasing the pressure drop of the duct assembly by more than 10%. This reduced pressure drop increases the airflow velocity at the outlet, thus improving exhaust efficiency.

[0013] In addition, the air duct assembly provided by the present invention may also have the following additional technical features:

[0014] In the above technical solution, the diversion section includes diversion ribs; within the first pipe group, multiple diversion ribs are arranged side by side along a direction perpendicular to the extension direction of the first pipe group.

[0015] In this technical solution, the structure of the flow divider is defined. Specifically, the flow divider includes multiple flow divider ribs, which are disposed within the first pipe group and extend along the extension direction of the first pipe group. For example, when the first pipe group is a straight pipe, the flow divider ribs extend in a direction parallel to the axis of the first pipe group. If the first pipe group partially bends, the flow divider ribs in this part of the first pipe group bend synchronously with the first pipe group. Based on this, multiple flow divider ribs are arranged side by side in a direction perpendicular to the extension direction of the first pipe group to separate multiple parallel airflow channels within the first pipe group. During operation, the airflow entering the first pipe group through the air inlet is dispersed into each airflow channel by the multiple flow divider ribs after contacting them, thus completing the airflow diversion. After the airflow is diverted, the possibility of vortex phenomena and backflow phenomena is significantly reduced, thereby reducing the turbulence noise of the airflow. At the same time, the flow velocity of the airflow is reduced after the diversion treatment, correspondingly reducing the impact on the first reversing joint, thereby reducing the impact noise of the airflow. This resulted in optimized flow distribution structure, reduced operating noise of air duct components, and improved user experience.

[0016] Among them, the diversion rib has the advantage of low structural complexity. It can be inserted into the first tube group or directly integrally formed inside the first tube group, which helps to reduce the process difficulty and production cost of the air duct component, thereby enhancing the product competitiveness of the air duct component.

[0017] In any of the above technical solutions, the first pipe assembly includes: a second reversing connector, including an air inlet facing different directions and a third interface; a diverter pipe, connecting the third interface and the first interface, with the diverter portion disposed inside the diverter pipe.

[0018] This technical solution describes the structure of the first pipe assembly. Specifically, the first pipe assembly includes a second reversing connector and a diverter pipe. One end of the second reversing connector is provided with an air inlet, and the other end is provided with a third interface. The air inlet and the third interface face different directions. The air inlet is used to connect to the air outlet of the fan to allow airflow into the first pipe assembly, and the third interface is used to connect to the diverter pipe. By setting the second reversing connector, the duct assembly can be arranged to the side of the fan structure, thereby improving the flexibility and freedom of duct assembly arrangement, and enhancing the versatility and practicality of the duct assembly. For example, when the duct assembly needs to be arranged inside a stove with a low height, connecting the air inlet to the side of the fan structure can reduce the overall height of the integrated stove without changing the duct structure, thus simultaneously meeting the requirements for downdraft ventilation and small space arrangement.

[0019] Based on this, the flow divider is set inside the flow divider tube, and the end of the flow divider tube away from the second reversing joint is connected to the first interface. After the airflow enters the flow divider tube, it is dispersed by the flow divider ribs.

[0020] The modular design of the air duct assembly, featuring a separate split-type diverter and second reversing joint, reduces the processing difficulty and improves the efficiency of the air duct assembly. It also facilitates transportation and storage. Specifically, the diverter and second reversing joint can be connected via bolts, studs, or snap-fit ​​structures. This technical solution does not impose strict limitations on the specific connection method between the second reversing joint and the diverter, as long as the connection requirements are met.

[0021] In any of the above technical solutions, the flow area of ​​the shunt tube gradually increases in the direction from the third interface to the first interface.

[0022] In this technical solution, the shape of the diverter is defined. Specifically, in the direction from the third interface to the first interface, i.e., the airflow direction, the flow area of ​​the diverter gradually increases. By setting a diverter with a gradually increasing flow area, the airflow is diverted and its velocity reduced by the diverter, thereby further reducing the airflow velocity towards the first reversing joint, reducing the impact of the airflow on the first reversing joint, and further reducing the aerodynamic noise generated by the airflow in the first reversing joint. This achieves the technical effect of optimizing the duct component structure, reducing the operating noise of the duct component, and improving the user experience.

[0023] Specifically, the flow surface of the diversion tube is rectangular, including a front plate, a rear plate, and left and right side plates. The front and rear plates are flat plates, which together form the long side of the rectangular flow surface of the diversion tube. The two side plates are curved plates, which together form the two wide side of the rectangular flow surface of the diversion tube. Specifically, the distance between the two curved plates gradually increases in the flow direction, so as to form a diversion tube with a gradually increasing flow area.

[0024] The two curved plates have smooth surfaces, which helps reduce resistance between the airflow and the splitter pipe, thus reducing pressure drop. Furthermore, they help reduce the likelihood of vortex and backflow phenomena, thereby reducing aerodynamic noise of the duct assembly.

[0025] In any of the above technical solutions, the flow area of ​​the air inlet is the first area, and the flow area of ​​the third interface is the second area; the ratio of the second area to the first area is greater than or equal to 1.39 and less than or equal to 1.69.

[0026] In this technical solution, the dimensional relationship between the air inlet and the third interface on the second reversing joint is defined. Specifically, the area of ​​the air inlet is its flow area, denoted as the first area. Similarly, the area of ​​the third interface is its flow area, denoted as the second area. The ratio of the second area to the first area must be greater than or equal to 1.39 and less than or equal to 1.69. By limiting the ratio of the second area to the first area to be greater than or equal to 1.39, the airflow can be diffused and slowed down after entering the air inlet, thereby reducing the impact of the airflow on the first reversing joint in conjunction with the flow divider, and thus reducing the aerodynamic noise of the duct assembly. By limiting the ratio of the second area to the first area to be less than or equal to 1.69, on the one hand, an excessively large diffusion ratio can be avoided from excessively affecting the airflow discharge efficiency of the duct assembly. On the other hand, it provides convenient conditions for the miniaturization and lightweight design of the duct assembly while ensuring noise reduction requirements.

[0027] In any of the above technical solutions, the air duct assembly further includes: a flow guide, which is horizontally disposed in the second reversing joint and extends from the air inlet to the third interface.

[0028] In this technical solution, the duct assembly also includes flow-around ribs, which are disposed within the second reversing joint and extend from the air inlet to the third interface. By setting flow-around ribs in the second reversing joint, the airflow direction is changed by the flow-around ribs, specifically forcing the airflow to bypass the flow-around ribs along their outer surface. This effectively streamlines the airflow entering the duct assembly, reducing the possibility of vortexing and backflow phenomena in subsequent flow. Furthermore, with multiple flow-around ribs arranged side-by-side in the second reversing joint, these ribs can also act as flow dividers, further reducing aerodynamic noise within the duct assembly. This achieves the technical effect of optimizing the internal flow field characteristics of the duct assembly and reducing its operating noise.

[0029] In any of the above technical solutions, the air inlet is rectangular, and the length of the air inlet is a first length; in the width direction of the air inlet, the distance between the flow rib and the long side of the air inlet is a first distance; the ratio of the first distance to the first length is greater than or equal to 0.35 and less than or equal to 0.39.

[0030] In this technical solution, the air inlet is a horizontally arranged rectangle, and the length of this rectangular air inlet is a first length. In the width direction of the air inlet, i.e., the vertical direction, the distance between the flow-around rib and the long side of the air inlet is a first distance. The ratio of the first distance to the first length must be greater than or equal to 0.35 and less than or equal to 0.39. By limiting the ratio of the first distance to the first length to be greater than or equal to 0.35, significant turbulence noise can be avoided in the gap between the air inlet and the flow-around rib. By limiting the arrangement of the first distance and the first length to less than or equal to 0.39, the structural compactness of the duct assembly can be improved while ensuring the flow-around effect, providing convenient conditions for the miniaturization and lightweight design of the duct assembly.

[0031] In any of the above technical solutions, the air duct assembly further includes: a filter section, which is disposed in the first pipe group and located between the flow divider section and the first reversing joint.

[0032] In this technical solution, the air duct assembly also includes a filter unit, which is specifically installed in the first pipe. The filter unit can filter the airflow passing through the first pipe. This filtration process can filter out pollutants visible to the user, such as grease and food residue, and can also filter out invisible substances that can emit odors, thereby reducing the pollution of the gas finally discharged through the air duct assembly. This gives the air duct assembly an odor-removing function, allowing the integrated stove to reduce indoor environmental pollution while meeting the internal circulation requirements.

[0033] In any of the above technical solutions, the first tube group further includes: a filter tube, connecting the diversion tube and the first interface, with the filter part disposed inside the filter tube.

[0034] In this technical solution, the first pipe assembly also includes a filter pipe for accommodating the filter section. Specifically, the filter pipe is disposed between the outlet end of the diverter pipe and the first interface of the first reversing joint. The shape of the flow channel inside the filter pipe is adapted to the shape of the filter section, and both ends of the filter pipe are detachably connected to the diverter pipe and the first reversing joint, respectively. By setting this independent structure of the filter pipe, a positioning space with a shape adapted to the outer contour of the filter section can be formed in the flow channel. This achieves modular design of the air duct assembly, reducing the processing difficulty of the air duct assembly, and improves the positioning accuracy of the filter section in the flow channel.

[0035] Specifically, a positioning rib is also provided inside the filter tube. The positioning rib is connected to the inner wall of the filter tube. The shape of the positioning rib is adapted to the outer contour shape of the filter part. After the filter part is installed into the filter tube, the outer contour of the filter part abuts against the positioning rib to restrict the movement of the filter part.

[0036] Therefore, by setting positioning ribs, the filter section can be positioned inside the filter tube, preventing it from becoming misaligned due to vibration, its own weight, or other factors, thus ensuring the effectiveness of the filter section in filtering the airflow.

[0037] In any of the above technical solutions, both the diversion pipe and the filter pipe extend in the first direction; in the first direction, the distance between the diversion section and the filter section is the second distance; the ratio of the second distance to the first length is greater than or equal to 2.75 and less than or equal to 3.03.

[0038] In this technical solution, both the diversion pipe and the filter pipe extend in a first direction, which is the height direction. The distance between the diversion section and the filter section in the first direction is a second distance, and the ratio of the second distance to the first length must be greater than or equal to 2.75 and less than or equal to 3.03. By limiting the ratio of the second distance to the first length to between 2.75 and 3.03, the smooth flow characteristics within the first pipe assembly can be effectively optimized, thereby reducing the possibility of vortex phenomena and backflow phenomena in the airflow within the first pipe assembly. This ultimately achieves the technical effect of enhancing the noise reduction performance of the duct assembly and improving the user experience.

[0039] In any of the above technical solutions, in the first direction, the distance between the filter section and the far end of the first reversing connector is the third distance; the ratio of the third distance to the first length is greater than or equal to 3.38 and less than or equal to 3.72.

[0040] In this technical solution, the position of the filter section is defined. Specifically, in the first direction, the distance between the filter section and the top of the first reversing joint is a third distance. The top of the first reversing joint defines the long top side of the rectangular air outlet, thus this third distance reflects the distance between the filter section and the long top side of the air inlet. Specifically, the ratio of the third distance to the first length must be greater than or equal to 3.38 and less than or equal to 3.72. By defining this ratio range, the flow field characteristics of the first duct assembly can be further optimized, enabling the filter section to rectify the airflow while meeting filtration requirements, thereby reducing aerodynamic noise in the duct assembly.

[0041] In any of the above technical solutions, the length of the diversion section in the length direction of the air inlet is the second length; the ratio of the second length to the first length is greater than or equal to 0.91 and less than or equal to 1.12.

[0042] In this technical solution, the dimensional relationship between the flow divider and the air inlet is defined. Specifically, the length of the flow divider is a second length, which is the length of the flow divider along the length direction of the air inlet. Taking a flow divider consisting of multiple parallel flow divider ribs as an example, the length of the flow divider is the maximum distance between two flow divider ribs on the left and right sides. Based on this, the ratio of the second length to the first length must be greater than or equal to 0.91 and less than or equal to 1.12. By limiting the ratio of the length of the air inlet to the length of the flow divider within the above range, the stability of the airflow within the flow divider can be improved, the ability of the flow divider to eliminate vortex and backflow phenomena can be strengthened, thereby reducing the aerodynamic noise of the duct assembly and improving the practicality and user experience of the duct assembly.

[0043] In any of the above technical solutions, the second pipe assembly includes: an air outlet pipe connected to the second interface, wherein at least a portion of the inner surface of the air outlet pipe is in the shape of a Vitosingy curve in the flow direction of the air outlet pipe.

[0044] In this technical solution, the second pipe assembly includes an air outlet pipe. One end of the air outlet pipe is connected to the second interface on the first reversing connector, and the other end is provided with an air outlet for airflow to be discharged from the air duct assembly.

[0045] In related technologies, the air outlet structure is often designed with a regular shape to meet ventilation requirements without increasing the manufacturing difficulty. However, this type of air outlet structure does not take into account the flow field characteristics of the airflow within the structure, resulting in significant energy loss. This energy loss affects the flow rate of the exhaust air, hindering efficient ventilation. Furthermore, this type of air outlet structure generates noticeable turbulent noise, which can even exceed the operating noise of the device itself, becoming the main noise source and negatively impacting the user experience. This is detrimental to the design of integrated cooktops with internal exhaust systems.

[0046] In this application, the inner wall of the exhaust duct is smoothly tapered, and the shape of the smoothly tapering inner wall surface is the same as the shape of the Vitosingy curve. That is, after cutting the flow channel through a plane containing the flow direction or a plane parallel to that plane, the shape of the inner wall surface is consistent with the shape of the Vitosingy curve. The Vitosingy curve is a nonlinear gradient curve used in aerodynamics to optimize wind tunnel characteristics, which will not be elaborated here. By designing the shape of part of the inner wall surface of the flow channel to be the Vitosingy curve shape, the turbulence intensity of the airflow in the flow channel can be reduced while ensuring the inlet and outlet contraction ratio of the flow channel. This reduces the wind resistance of the inner wall surface to the airflow, thereby reducing the energy loss of the airflow in the exhaust duct and reducing the turbulent noise generated during airflow. This achieves the technical effects of optimizing the shape of the exhaust duct, improving the exhaust performance of the duct assembly, reducing the exhaust noise of the duct assembly, and improving the user experience.

[0047] According to a second aspect of the present invention, an integrated stove is provided, comprising: a body; a fan disposed on the body; and an air duct assembly as described in any of the above technical solutions, the air duct assembly being connected to the air outlet end of the fan.

[0048] This technical solution defines an integrated stove equipped with the air duct component of any of the aforementioned technical solutions. Therefore, this integrated stove possesses the advantages of the air duct component in any of the aforementioned technical solutions and can achieve the technical effects achievable by the air duct component in any of the aforementioned technical solutions. To avoid repetition, further details are omitted here.

[0049] Based on this, the integrated stove includes a main body and a fan. The main body is the main frame structure of the integrated stove, used to position and support other structures on the integrated stove. The fan is installed on the main body. The air inlet of the fan is used to draw the oil fumes from the area above the integrated stove into the main body. The air inlet on the air duct assembly is connected to the air outlet of the integrated stove. The airflow drawn into the fan is finally discharged into the air duct assembly through the air outlet, and finally discharged back into the indoor environment through the air outlet on the air duct assembly, thereby realizing the internal circulation function of the integrated stove.

[0050] In any of the above technical solutions, the integrated stove further includes: a panel, which is installed on the main body and includes an opening that communicates with the air inlet of the fan.

[0051] In this technical solution, the integrated cooktop also includes a panel, which is the exposed structure of the integrated cooktop. The panel covers the main body, and after the integrated cooktop is installed, the surface of the panel becomes the work surface of the integrated cooktop. The panel has an opening that is connected to the air inlet of the fan. During operation, a negative pressure is generated inside the opening under the suction of the fan. Under the action of negative pressure, the oil fumes on the outside of the panel are forced into the integrated cooktop through the opening to complete the collection of oil fumes, thereby preventing the oil fumes from spreading into the room.

[0052] Specifically, the integrated cooktop also includes a heating element installed inside the main body. Specifically, the heating element is connected to the panel to form a heating area on the panel. The heating element can directly heat the panel to heat cooking appliances placed on it, or it can directly heat cooking appliances placed on a corresponding area of ​​the panel through the heated panel. This technical solution does not impose rigid limitations on the specific structure of the heating element; as long as it can form a heating area on the panel, it is acceptable.

[0053] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0054] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0055] Figure 1 An exploded view of a duct assembly according to an embodiment of the present invention is shown;

[0056] Figure 2 One of the structural schematic diagrams of a duct assembly according to an embodiment of the present invention is shown;

[0057] Figure 3 A second schematic diagram of the structure of a duct assembly according to an embodiment of the present invention is shown;

[0058] Figure 4 A third schematic diagram of the structure of a duct assembly according to an embodiment of the present invention is shown;

[0059] Figure 5 A fourth schematic diagram of the structure of a duct assembly according to an embodiment of the present invention is shown;

[0060] Figure 6 A schematic diagram of the structure of a separation tube according to an embodiment of the present invention is shown;

[0061] Figure 7 for Figure 6 A cross-sectional view of the separator in the illustrated embodiment along the AA direction;

[0062] Figure 8 Fifth schematic diagram of a duct assembly according to an embodiment of the present invention is shown;

[0063] Figure 9 for Figure 8 A cross-sectional view of the separator in the illustrated embodiment along the BB direction;

[0064] Figure 10 A schematic diagram of the structure of an integrated stove according to an embodiment of the present invention is shown.

[0065] Figure 11 This shows one of the flow field simulation diagrams of existing air duct structures;

[0066] Figure 12 One of the flow field simulation diagrams of a duct assembly according to an embodiment of the present invention is shown;

[0067] Figure 13 This is the second simulation diagram of the flow field of the existing air duct structure;

[0068] Figure 14 The second flow field simulation diagram of a duct assembly according to an embodiment of the present invention is shown.

[0069] in, Figures 1 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0070] 100 Duct assembly, 110 First pipe assembly, 112 Second reversing connector, 1122 Air inlet, 114 Diverter pipe, 116 Flow rib, 118 Filter pipe, 120 First reversing connector, 130 Second pipe assembly, 132 Air outlet pipe, 1322 Air outlet, 140 Diverter section, 150 Filter section, 200 Integrated stove, 210 Body, 220 Fan, 230 Panel, 240 Separator, 250 Storage component, 260 Grille. Detailed Implementation

[0071] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0072] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0073] The following reference Figures 1 to 14 The present invention describes a duct assembly and an integrated stove according to some embodiments thereof.

[0074] Example 1

[0075] like Figure 1 and Figure 2 As shown, a first aspect embodiment of the present invention provides a duct assembly 100, which includes: a first duct group 110, including an air inlet 1122; a first reversing connector 120, including a first interface and a second interface facing different directions, the first interface being connected to the first duct group 110; a second duct group 130, connected to the second interface, including an air outlet 1322; and a flow divider 140, disposed in the first duct group 110, for dispersing the airflow flowing toward the first reversing connector 120.

[0076] This application defines a duct component 100, which is applied to an internal circulation integrated stove 200. The internal circulation integrated stove 200 can draw the oil fumes generated on it into the interior of the integrated stove 200, and after purifying the oil fumes, it is discharged back to the indoor environment where the user is located through the duct component 100 to achieve the internal circulation function, eliminating the need for a complex indoor and outdoor exhaust structure.

[0077] In related technologies, to meet the basic requirement of internal circulation emission, the flue of the internal circulation integrated stove 200 is mostly located in the indoor environment, such as inside the cooktop. This means that noise from inside the flue is directly transmitted to the user's environment. However, during actual operation, the high-speed flowing fumes create vortices and backflow within the flue. This not only increases the resistance of the entire flue system but also affects the flow rate, and the vortices and backflow generate significant turbulent noise. Simultaneously, the high-speed flowing fumes impact the inner wall of the flue at bends, causing noticeable impact noise. These noises directly interfere with the user's daily life, resulting in the technical problems of high operating noise and poor user experience in the internal circulation integrated stove 200.

[0078] In this application, the duct assembly 100 includes a first pipe group 110, a first reversing connector 120, and a second pipe group 130. The first pipe group 110 has an air inlet 1122 for airflow into the duct assembly 100, and the second pipe group 130 has an air outlet 1322 for airflow discharge. The first reversing connector 120 includes a first interface and a second interface. The first interface connects to the first pipe group 110, and the second interface connects to the second pipe group 130. Airflow within the first pipe group 110 flows into the second pipe group 130 via the first and second interfaces. The first and second interfaces have different orientations to allow the airflow to be redirected within the first reversing connector 120, thus delivering the airflow to a designated area.

[0079] Based on this, the duct assembly 100 also includes a flow divider 140, which is disposed within the first pipe group 110. Airflow from the inlet 1122 to the first interface is diverted and slowed by the flow divider 140 upon contact with it, and then flows into the first reversing connector 120. By providing the flow divider 140, on the one hand, the airflow can be dispersed through diversion, thereby adjusting the flow field characteristics within the first pipe group 110 and reducing the possibility of vortices and backflow within the first pipe group 110, thus reducing turbulent noise caused by vortices and backflow. On the other hand, while dispersing the airflow, the flow divider 140 can also reduce the airflow velocity, thereby reducing the impact of the airflow on the inner wall of the first reversing connector 120, thus reducing the impact noise generated in the first reversing connector 120. Therefore, by providing this flow divider 140, the operating noise of the duct assembly 100 can be effectively reduced, solving the aforementioned technical problems of high operating noise and poor user experience. This achieves the technical effects of optimizing the flow field characteristics of the air duct component 100, reducing the aerodynamic noise of the air duct component 100, improving the practicality of the air duct component 100, and enhancing the user experience.

[0080] Specifically, Figure 11 and Figure 13Corresponding to the flue structure in the related technology, the flow field characteristics of the flue structure are shown, and the flue structure does not have a flow diversion structure before the bending area. Figure 12 and Figure 14 The flow field simulation diagram of the air duct assembly 100 as defined in this application shows that the flow field characteristics are significantly changed by setting the flow splitter 140.

[0081] By incorporating a diversion section 140, the impact of airflow on the first reversing joint 120 is reduced. Therefore, the diversion section 140 can also effectively reduce energy loss of the airflow within the duct assembly 100, thereby reducing the pressure drop of the duct assembly 100 by more than 10%. This reduction in pressure drop increases the airflow velocity at the outlet 1322, thus improving exhaust efficiency.

[0082] like Figure 1 , Figure 6 and Figure 7 As shown, the diversion section 140 includes diversion ribs; within the first pipe group 110, multiple diversion ribs are arranged side by side along a direction perpendicular to the extension direction of the first pipe group 110.

[0083] In this embodiment, the structure of the flow divider 140 is defined. Specifically, the flow divider 140 includes multiple flow divider ribs, which are disposed within the first pipe group 110 and extend within the first pipe group 110 along its extension direction. For example, when the first pipe group 110 is a straight pipe, the flow divider ribs extend in a direction parallel to the axis of the first pipe group 110. If the first pipe group 110 is partially bent, the flow divider ribs within this portion of the first pipe group 110 bend synchronously with the first pipe group 110. Based on this, the multiple flow divider ribs are arranged side by side in a direction perpendicular to the extension direction of the first pipe group 110 to separate multiple parallel airflow channels within the first pipe group 110. During operation, the airflow entering the first pipe group 110 through the air inlet 1122 is dispersed into each airflow channel by the multiple flow divider ribs after contacting them, thus completing the airflow diversion. After the airflow is split, the likelihood of vortex and backflow phenomena is significantly reduced, thereby reducing turbulence noise. Simultaneously, the reduced airflow velocity after splitting decreases the impact on the first reversing joint 120, thus reducing impact noise. This achieves the technical effect of optimizing the structure of the splitter section 140, reducing the operating noise of the duct assembly 100, and improving the user experience.

[0084] Among them, the diversion rib has the advantage of low structural complexity. It can be inserted into the first pipe group 110 or directly integrally formed inside the first pipe group 110, which helps to reduce the process difficulty and production cost of the air duct assembly 100, thereby enhancing the product competitiveness of the air duct assembly 100.

[0085] like Figure 2and Figure 5 As shown, the first pipe assembly 110 includes: a second reversing connector 112, including an air inlet 1122 facing different directions and a third interface; a diversion pipe 114, connecting the third interface and the first interface, and a diversion section 140 disposed in the diversion pipe 114.

[0086] In this embodiment, the structure of the first pipe assembly 110 is described. Specifically, the first pipe assembly 110 includes a second reversing connector 112 and a diverter pipe 114. One end of the second reversing connector is provided with an air inlet 1122, and the other end is provided with a third interface. The air inlet 1122 and the third interface have different orientations. The air inlet 1122 is used to connect to the air outlet of the fan 220 so that airflow enters the first pipe assembly 110. The third interface is used to connect to the diverter pipe 114. By providing the second reversing connector, the duct assembly 100 can be arranged on the side of the fan 220 structure, thereby improving the flexibility and freedom of duct assembly 100 arrangement, and enhancing the versatility and practicality of the duct assembly 100. For example, when the duct assembly 100 needs to be arranged inside a stove with a small height, connecting the air inlet 1122 to the side of the fan 220 structure can reduce the overall height of the integrated stove 200 without changing the duct structure, so as to simultaneously meet the requirements of downdraft ventilation and small space arrangement.

[0087] Based on this, the diversion section 140 is set inside the diversion pipe 114. The end of the diversion pipe 114 away from the second reversing connector 112 is connected to the first interface. After the airflow enters the diversion pipe 114, it is dispersed by the diversion ribs.

[0088] The modular design of the air duct assembly 100, achieved by using a separate split-type diversion pipe 114 and a second reversing joint 112, reduces the processing difficulty and improves the processing efficiency of the air duct assembly 100. It also facilitates transportation and storage. Specifically, the diversion pipe 114 and the second reversing joint 112 can be connected by bolts, studs, or snap-fit ​​structures. This embodiment does not impose strict limitations on the specific connection method between the second reversing joint 112 and the diversion pipe 114, as long as the connection requirements are met.

[0089] like Figure 2 , Figure 3 and Figure 4 As shown, the flow area of ​​the shunt tube 114 gradually increases in the direction from the third interface to the first interface.

[0090] In this embodiment, the shape of the diverter 114 is defined. Specifically, in the direction from the third interface to the first interface, i.e., the airflow direction, the flow area of ​​the diverter 114 gradually increases. By setting the diverter 114 with a gradually increasing flow area, the airflow can be diffused and slowed down by the diverter 114 while being diverted. This diffusion and slowing down further reduces the airflow velocity towards the first reversing joint 120, thereby reducing the impact of the airflow on the first reversing joint 120 and further reducing the aerodynamic noise generated by the airflow in the first reversing joint 120. This achieves the technical effect of optimizing the structure of the duct assembly 100, reducing the operating noise of the duct assembly 100, and improving the user experience.

[0091] Specifically, the flow surface of the diversion pipe 114 is rectangular, including a front plate, a rear plate, and left and right side plates. The front plate and the rear plate are flat plates, which together form the long side of the rectangular flow surface of the diversion pipe 114. The two side plates are curved plates, which together form the two wide side of the rectangular flow surface of the diversion pipe 114. Specifically, the distance between the two curved plates gradually increases in the flow direction, so as to form a diversion pipe 114 with a gradually increasing flow area.

[0092] The surfaces of the two curved plates are smooth. These smooth surfaces help reduce the resistance between the airflow and the splitter 114, thereby reducing pressure drop. On the other hand, they help to further reduce the possibility of vortex and backflow phenomena, thus helping to reduce the aerodynamic noise of the duct assembly 100.

[0093] like Figure 8 and Figure 9 As shown, the flow area of ​​the air inlet 1122 is the first area, and the flow area of ​​the third interface is the second area; the ratio of the second area to the first area is greater than or equal to 1.39 and less than or equal to 1.69.

[0094] In this embodiment, the dimensional relationship between the air inlet 1122 and the third interface on the second reversing connector 112 is defined. Specifically, the area of ​​the air inlet 1122 is its flow area, which is denoted as the first area. Similarly, the area of ​​the third interface is its flow area, denoted as the second area. Figure 9In this diagram, X1 represents the width of the third structure, and X0 represents the width of the air inlet. With consistent thickness, the ratio of X1 to X0 is the ratio of the second area to the first area. This ratio must be greater than or equal to 1.39 and less than or equal to 1.69. By limiting the ratio of the second area to the first area to be greater than or equal to 1.39, the airflow can be diffused and slowed after entering the air inlet 1122. This, in conjunction with the flow divider 140, reduces the impact of the airflow on the first reversing connector 120, thereby reducing the aerodynamic noise of the duct assembly 100. Limiting the ratio of the second area to the first area to be less than or equal to 1.69 avoids an excessively large diffusion ratio from negatively impacting the airflow discharge efficiency of the duct assembly 100. Furthermore, it facilitates miniaturization and lightweight design of the duct assembly 100 while ensuring noise reduction requirements are met.

[0095] like Figure 2 and Figure 3 As shown, the air duct assembly 100 also includes: a flow guide 116, which is horizontally disposed in the second reversing joint 112 and extends from the air inlet 1122 to the third interface.

[0096] In this embodiment, the air duct assembly 100 further includes a flow-around rib 116, which is disposed within the second reversing joint 112 and extends from the air inlet 1122 to the third interface within the second reversing joint 112. By providing the flow-around rib 116 in the second reversing joint 112, the airflow direction is changed by the flow-around rib 116, specifically forcing the airflow to bypass the flow-around rib 116 along its outer surface, thereby sorting the airflow entering the air duct assembly 100 and reducing the possibility of vortex and backflow phenomena in the subsequent flow process. Simultaneously, with multiple flow-around ribs 116 arranged side-by-side in the second reversing joint 112, the multiple flow-around ribs 116 can also act as flow dividers, thereby further reducing the aerodynamic noise of the airflow in the air duct assembly 100 in conjunction with the flow divider 140. This achieves the technical effect of optimizing the internal flow field characteristics of the air duct assembly 100 and reducing the operating noise of the air duct assembly 100.

[0097] like Figure 2 and Figure 3 As shown, the air inlet 1122 is rectangular, and the length of the air inlet 1122 is the first length (e.g., Figure 9 As shown in X0); in the width direction of the air inlet 1122, the distance between the flow rib 116 and the long side of the air inlet 1122 is the first distance (as shown in X0). Figure 9 (As shown in X2); the ratio of the first distance to the first length is in the range of ≥0.35 and ≤0.39.

[0098] In this embodiment, the air inlet 1122 is a horizontally arranged rectangle, and the length of the rectangular air inlet 1122 is a first length. In the width direction of the air inlet 1122, i.e., the vertical direction, the distance between the flow-around rib 116 and the long side of the air inlet 1122 is a first distance. The ratio of the first distance to the first length must be greater than or equal to 0.35 and less than or equal to 0.39. By limiting the ratio of the first distance to the first length to be greater than or equal to 0.35, significant turbulence noise can be avoided in the gap between the air inlet 1122 and the flow-around rib 116. By limiting the arrangement of the first distance and the first length to less than or equal to 0.39, the structural compactness of the duct assembly 100 can be improved while ensuring the flow-around effect, providing convenient conditions for the miniaturization and lightweight design of the duct assembly 100.

[0099] like Figure 1 and Figure 9 As shown, the air duct assembly 100 also includes a filter section 150, which is disposed in the first pipe group 110 and located between the diversion section 140 and the first reversing joint 120.

[0100] In this embodiment, the air duct assembly 100 further includes a filter section 150, which is specifically disposed in the first pipe. The filter section 150 can filter the airflow passing through the first pipe. This filtration process can filter out pollutants visible to the user, such as grease and food residue, and can also filter out invisible substances that can emit odors, thereby reducing the pollution of the gas finally discharged through the air duct assembly 100. This enables the air duct assembly 100 to have an odor removal function, allowing the integrated stove 200 to reduce indoor environmental pollution while meeting the internal circulation requirements.

[0101] like Figure 1 and Figure 2 As shown, the first tube group 110 also includes: a filter tube 118, which connects the diversion tube 114 and the first interface, and a filter section 150 is disposed inside the filter tube 118.

[0102] In this embodiment, the first pipe assembly 110 further includes a filter pipe 118 for accommodating the filter section 150. Specifically, the filter pipe 118 is disposed between the outlet end of the diverter pipe 114 and the first interface of the first reversing connector 120. The flow channel shape inside the filter pipe 118 is adapted to the shape of the filter section 150, and both ends of the filter pipe 118 are detachably connected to the diverter pipe 114 and the first reversing connector 120, respectively. By setting this independent structure of the filter pipe 118, a positioning space with a shape adapted to the outer contour of the filter section 150 can be formed in the flow channel. On the one hand, this enables the modular design of the air duct assembly 100, reducing the processing difficulty of the air duct assembly 100; on the other hand, it improves the positioning accuracy of the filter section 150 in the flow channel.

[0103] Specifically, a positioning rib is also provided inside the filter tube 118. The positioning rib is connected to the inner wall of the filter tube 118. The shape of the positioning rib is adapted to the outer contour shape of the filter part 150. After the filter part 150 is installed into the filter tube 118, the outer contour of the filter part 150 abuts against the positioning rib to restrict the movement of the filter part 150.

[0104] It can be seen that by setting positioning ribs, the filter section 150 can be positioned inside the filter tube 118, preventing the filter section 150 installed in the filter tube 118 from being misaligned due to factors such as vibration and its own weight, thereby ensuring the effectiveness of the filter section 150 in filtering the airflow.

[0105] like Figure 8 and Figure 9 As shown, both the diversion pipe 114 and the filter pipe 118 extend in the first direction; in the first direction, the distance between the diversion section 140 and the filter section 150 is the second distance (e.g., Figure 9 (As shown in X3); the ratio of the second distance to the first length is in the range of ≥2.75 and ≤3.03.

[0106] In this embodiment, both the diversion pipe 114 and the filter pipe 118 extend in a first direction, which is the height direction. The distance between the diversion section 140 and the filter section 150 in the first direction is a second distance, and the ratio of the second distance to the first length must be greater than or equal to 2.75 and less than or equal to 3.03. By limiting the ratio of the second distance to the first length to between 2.75 and 3.03, the smooth flow characteristics within the first pipe assembly 110 can be effectively optimized, thereby reducing the possibility of vortex phenomena and backflow phenomena in the airflow within the first pipe assembly 110. This achieves the technical effect of enhancing the noise reduction performance of the air duct assembly 100 and improving the user experience.

[0107] like Figure 8 and Figure 9 As shown, in the first direction, the distance between the filter section 150 and the distal end of the first reversing connector 120 is the third distance (e.g., Figure 9 (As shown in X4); the ratio of the third distance to the first length is in the range of 3.38 to 3.72.

[0108] In this embodiment, the position of the filter section 150 is defined. Specifically, in the first direction, the distance between the filter section 150 and the top of the first reversing connector 120 is a third distance. The top of the first reversing connector 120 defines the long top side of the rectangular air outlet 1322; therefore, this third distance reflects the distance between the filter section 150 and the long top side of the air inlet 1122. Specifically, the ratio of the third distance to the first length must be greater than or equal to 3.38 and less than or equal to 3.72. By defining the above ratio range, the flow field characteristics of the first duct assembly 110 can be further optimized, enabling the filter section 150 to rectify the airflow while meeting filtration requirements, thereby reducing aerodynamic noise in the duct assembly 100.

[0109] like Figure 8 and Figure 9 As shown, in the length direction of the air inlet 1122, the length of the diversion section 140 is the second length (e.g., Figure 9 (As shown in X5); the ratio of the second length to the first length is in the range of ≥0.91 and ≤1.12.

[0110] In this embodiment, the dimensional relationship between the flow divider 140 and the air inlet 1122 is defined. Specifically, the length of the flow divider 140 is a second length, which is the length of the flow divider 140 in the length direction of the air inlet 1122. Taking the flow divider 140 as having multiple side-by-side flow dividers as an example, the length of the flow divider 140 is the maximum distance between two flow dividers on the left and right sides. Based on this, the ratio of the second length to the first length must be greater than or equal to 0.91 and less than or equal to 1.12. By limiting the ratio of the length of the air inlet 1122 to the length of the flow divider 140 within the above range, the stability of the airflow within the flow divider 140 can be improved, the ability of the flow divider 140 to eliminate vortex and backflow phenomena can be strengthened, thereby reducing the aerodynamic noise of the duct assembly 100 and improving the practicality and user experience of the duct assembly 100.

[0111] like Figure 1 and Figure 5 As shown, the second pipe assembly 130 includes: an air outlet pipe 132 connected to the second interface, and at least a portion of the inner surface of the air outlet pipe 132 is in the shape of a Vitosingy curve in the flow direction of the air outlet pipe 132.

[0112] In this embodiment, the second pipe assembly 130 includes an air outlet pipe 132. One end of the air outlet pipe 132 is connected to the second interface on the first reversing connector 120, and the other end is provided with an air outlet 1322 for airflow to be discharged from the air duct assembly 100.

[0113] In related technologies, the air outlet structure is often designed with a regular shape to meet ventilation requirements without increasing the manufacturing difficulty. However, this type of air outlet structure does not take into account the flow field characteristics of the airflow within the structure, resulting in significant energy loss. This energy loss affects the flow rate of the exhaust air, hindering efficient ventilation. Furthermore, this type of air outlet structure generates noticeable turbulent noise, which can even exceed the operating noise of the device itself, becoming the main noise source and negatively impacting the user experience. This is detrimental to the design of the 200-type integrated stove with internal exhaust.

[0114] In this application, the inner wall of the outlet duct 132 is smoothly tapered, and the shape of the smoothly tapered inner wall surface is the same as the shape of the Vitosingy curve. That is, after the flow channel is cut through the plane where the flow direction is located or a plane parallel to that plane, the shape of the inner wall surface is consistent with the shape of the Vitosingy curve. The Vitosingy curve is a nonlinear gradient curve used in aerodynamics to optimize wind tunnel characteristics, which will not be elaborated here. By designing the shape of part of the inner wall surface of the flow channel to be the shape of the Vitosingy curve, the turbulence of the airflow in the flow channel can be reduced while ensuring the inlet and outlet contraction ratio of the flow channel. This reduces the wind resistance of the inner wall surface to the airflow, thereby reducing the energy loss of the airflow in the outlet duct 132 and reducing the turbulence noise generated during the airflow process. This achieves the technical effect of optimizing the shape of the outlet duct 132, improving the exhaust performance of the duct assembly 100, reducing the exhaust noise of the duct assembly 100, and improving the user experience.

[0115] Example 2

[0116] like Figure 10 As shown, a first aspect embodiment of the present invention provides an integrated stove 200, which includes: a body 210; a fan 220 disposed on the body 210; and a duct assembly 100 as in any of the above embodiments, wherein the duct assembly 100 is connected to the air outlet end of the fan 220.

[0117] In this embodiment, an integrated stove 200 is defined, which is provided with the air duct component 100 of any of the above embodiments. Therefore, the integrated stove 200 has the advantages of the air duct component 100 of any of the above embodiments and can achieve the technical effects that the air duct component 100 of any of the above embodiments can achieve. To avoid repetition, it will not be described again here.

[0118] Based on this, the integrated stove 200 includes a body 210 and a fan 220. The body 210 is the main frame structure of the integrated stove 200, used to position and support other structures on the integrated stove 200. The fan 220 is installed on the body 210. The air inlet of the fan 220 is used to draw the oil fumes from the area above the integrated stove 200 into the body 210. The air inlet 1122 on the air duct assembly 100 is connected to the air outlet of the integrated stove 200. The airflow drawn into the fan 220 is finally discharged into the air duct assembly 100 through the air outlet, and finally discharged back into the indoor environment through the air outlet 1322 on the air duct assembly 100, thereby realizing the internal circulation function of the integrated stove 200.

[0119] In any of the above embodiments, the integrated stove 200 further includes: a panel 230, which covers the body 210 and includes an opening that communicates with the air inlet of the fan 220.

[0120] In this embodiment, the integrated stove 200 also includes a panel 230, which is the exposed structure of the integrated stove 200. The panel 230 covers the main body 210. After the integrated stove 200 is installed, the surface of the panel 230 becomes the work surface of the integrated stove 200. The panel 230 has an opening that is connected to the air inlet of the fan 220. During operation, a negative pressure is generated in the opening under the suction of the fan 220. Under the action of the negative pressure, the oil fumes on the outside of the panel 230 are forced into the integrated stove 200 through the opening to complete the collection of oil fumes, thereby preventing the oil fumes from spreading into the room.

[0121] Specifically, the integrated stove 200 also includes a heating element installed inside the main body 210. Specifically, the heating element is connected to the panel 230 to form a heating area on the panel 230. The heating element can directly heat the panel 230 to heat cooking appliances placed on the panel 230 through the heated panel 230, or the heating element can directly heat cooking appliances placed on a corresponding area of ​​the panel 230 through the panel 230. This embodiment does not impose rigid limitations on the specific structure of the heating element, as long as it can form a heating area on the panel 230.

[0122] In any of the above embodiments, the integrated stove 200 also includes a separator 240 disposed within the body 210, located between the opening and the fan 220, for separating grease from the fumes.

[0123] In this embodiment, the integrated stove 200 is also equipped with a separator 240, which is disposed within the main body 210. After assembly, the separator 240 is located inside the opening and opposite to it. During operation, the fumes flowing into the opening first flow into the separator 240, which separates the grease from the air, preventing it from continuing to flow into the integrated stove 200 with the air. By providing this separator 240, grease in the fumes can be prevented from adhering to the internal working structure of the integrated stove 200, thus preventing grease from clogging the air duct and causing short circuits or other malfunctions. Furthermore, it eliminates the need for frequent cleaning of the integrated stove 200's internal grease. This solves the technical problems of easily damaged internal structures and increased cleaning burden due to grease absorption.

[0124] In any of the above embodiments, the separator 240 is a cover, which covers the air inlet end of the fan 220; the cover includes through holes distributed on the peripheral side surface of the cover.

[0125] In this embodiment, the structure of the separator 240 is defined. Specifically, the separator 240 includes a cover and a through hole. The cover is disposed inside the main body 210, and the top surface of the cover is opposite to the opening, i.e., the top surface is the first surface. The through hole is disposed on the periphery of the cover and connects the space inside and outside the cover. During operation, the temperature of the cover is lower than the temperature of the oil fume. After contacting the low-temperature cover, the grease particles in the oil fume adhere to the outside of the cover to complete the grease separation. The air after grease separation enters the interior of the main body 210 and is discharged back into the indoor environment after undergoing other filtration processes, thereby preventing grease from being discharged back into the indoor environment.

[0126] The enclosure features multiple through-holes evenly distributed on its circumferential surface to form a ring-shaped mesh structure. Multiple air inlets increase the gas flow rate of the separator 240, preventing oil fumes from being blocked by the mesh. The enclosure can be made of stainless steel, aluminum, or plastic. These materials provide excellent corrosion resistance, preventing corrosion from the separated grease. Furthermore, since oil fumes often contain moisture, these materials also prevent rusting. Specifically, metal enclosures offer excellent thermal conductivity, allowing heat to dissipate quickly and improving grease separation efficiency through a lower temperature.

[0127] In any of the above embodiments, the integrated stove 200 further includes a storage component 250, which is disposed opposite to the separator 240 and is used to collect grease.

[0128] In this embodiment, the integrated stove 200 also includes a storage component 250, which is connected to the panel 230. A separator 240 is disposed on the storage component 250. After assembly, the separator 240 is positioned opposite the air inlet 1122. During operation, grease in the cooking fumes comes into contact with the separator 240, separates from the air, and adheres to the separator 240. The grease adhering to the separator 240 flows into the storage component 250 under gravity for collection. By setting up the storage component 250, on the one hand, the grease separated from the separator 240 can be collected, preventing the separated grease from flowing into the suction assembly. On the other hand, users can clean or replace the storage component 250 to remove grease, providing convenience. This achieves the technical effect of optimizing the separator structure, improving the reliability of grease separation and collection, reducing the difficulty of cleaning the separator, and improving the user experience.

[0129] In any of the above embodiments, the panel 230 assembly further includes a grille 260, which is embedded in the opening.

[0130] In this embodiment, the integrated cooktop 200 is also equipped with a grille 260. After the grille 260 is assembled, at least a portion of it is embedded in the opening. By setting the grille 260 on the opening, on the one hand, large particles generated during cooking can be prevented from falling into the separation component, thus preventing the particles from clogging the air inlet on the separation component. On the other hand, the grille 260 can, to a certain extent, prevent external dust and other impurities from falling into the separation component, thus preventing a large amount of dust and grease from condensing into hard-to-clean clumps. This achieves the technical effect of improving the reliability and stability of the separation component, reducing the difficulty of cleaning the separation component, and improving the user experience.

[0131] In the description of this invention, the term "multiple" refers to two or more. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0132] In the description of this invention, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0133] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A duct assembly, characterized in that, include: The first pipe assembly includes the air inlet; The first reversing connector includes a first interface and a second interface facing different directions, the first interface being connected to the first pipe group; The second pipe assembly is connected to the second interface and includes an air outlet; A flow divider is provided in the first pipe group to disperse the airflow flowing toward the first reversing joint; The diversion section includes a diversion rib, which is disposed within the first pipe group and extends along the extension direction of the first pipe group; Within the first pipe group, multiple flow dividers are arranged side by side in a direction perpendicular to the extension direction of the first pipe group, so as to separate multiple parallel airflow channels within the first pipe group. The airflow entering the first pipe group through the air inlet is dispersed into each airflow channel by the multiple flow dividers after contacting them. The first tube group includes: The second reversing connector includes the air inlet facing different directions and the third interface; A shunt pipe connects the third interface and the first interface, and the shunt section is disposed inside the shunt pipe; The air duct assembly also includes flow-around ribs, which are horizontally arranged in the second reversing joint and extend from the air inlet to the third interface; The flow area of ​​the air inlet is the first area, and the flow area of ​​the third interface is the second area; The ratio of the second area to the first area is greater than or equal to 1.39 and less than or equal to 1.

69. The second tube group includes: An air outlet duct, connected to the second interface, has at least a portion of its inner surface shaped like a Vitosingi curve in the flow direction of the air outlet duct.

2. The air duct assembly according to claim 1, characterized in that, The flow area of ​​the shunt tube gradually increases in the direction from the third interface to the first interface.

3. The air duct assembly according to claim 1, characterized in that, The air inlet is rectangular, and the length of the air inlet is a first length; In the width direction of the air inlet, the distance between the flow rib and the long side of the air inlet is the first distance; The ratio of the first distance to the first length is greater than or equal to 0.35 and less than or equal to 0.

39.

4. The air duct assembly according to claim 3, characterized in that, Also includes: The filter section is located in the first tube group, between the flow divider and the first reversing connector.

5. The air duct assembly according to claim 4, characterized in that, The first tube group also includes: A filter tube is connected to the splitter tube and the first interface, and the filter part is disposed inside the filter tube.

6. The air duct assembly according to claim 5, characterized in that, Both the diverter tube and the filter tube extend in the first direction; In the first direction, the distance between the diverting section and the filtering section is the second distance; The ratio of the second distance to the first length is in the range of 2.75 to 3.

03.

7. The air duct assembly according to claim 6, characterized in that, In the first direction, the distance between the filter section and the far end of the first reversing connector is the third distance; The ratio of the third distance to the first length is in the range of 3.38 to 3.

72.

8. The air duct assembly according to claim 6, characterized in that, In the longitudinal direction of the air inlet, the length of the diversion section is the second length; The ratio of the second length to the first length is in the range of 0.91 to 1.

12.

9. An integrated stove, characterized in that, include: ontology; The fan is located on the main body; The air duct assembly as described in any one of claims 1 to 8 is connected to the air outlet end of the fan.

10. The integrated stove according to claim 9, characterized in that, Also includes: A panel, covering the main body, includes an opening communicating with the air inlet of the fan.

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