Smoke exhaust pipe, oil smoke suction device and combined cooking equipment

Abstract

The present invention discloses a smoke exhaust pipe, an oil fume extraction device, and a combined cooking device thereof. The smoke exhaust pipe includes a pipe body and a diverter. The pipe body is used to communicate with a volute of the oil fume extraction device. The diverter is disposed within the pipe body. The diverter includes a first diverter portion having a first air guide surface. The first diverter portion is disposed corresponding to a position where oil fume with a flow component passes through. The first air guide surface is inclined with respect to the length direction of the pipe body and is disposed away from the volute tongue of the volute. When the smoke exhaust pipe is used in the oil fume extraction device, oil fume enters the pipe body through the air outlet of the volute. Part of the oil fume entering the pipe body has a transverse flow component. The first air guide surface guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the pipe body, thereby reducing the loss of oil fume flow energy, improving the oil fume exhaust effect, and further enhancing the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of cooking equipment, and in particular to a smoke exhaust pipe. The present invention also relates to a fume extraction device. The present invention further relates to a combined cooking device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Combination cooking equipment typically includes a housing, a cooking table, a heating device, and an exhaust device. The cooking table is coupled to the housing, and the exhaust device is housed within the housing and communicates with the top of the cooking table. The heating device is housed within the housing (electromagnetic heating structure) or on the cooking table (gas heating structure), corresponding to the cooking position of the cooking table. The exhaust device typically includes a fan, a volute, and an exhaust pipe. The air inlet of the volute communicates with the top of the cooking table, and the air outlet of the volute communicates with the exhaust pipe. When cooking food, the cookware is placed on the cooking position, the heating mechanism heats the cookware to achieve cooking, and the fan is activated, creating a negative pressure within the volute. This allows the oil smoke above the cooking table to enter the exhaust pipe through the air inlet, the interior of the volute, and the air outlet, thereby improving the air quality during cooking.

[0004] However, the oil smoke is discharged into the exhaust pipe through the air outlet of the volute under the action of the centrifugal force of the fan. After entering the exhaust pipe, the oil smoke has a large lateral flow component, which causes the loss of flow energy and thus affects the exhaust effect. Summary of the Invention

[0005] The purpose of the present invention is to at least solve the problem of flow energy loss caused by the lateral flow component of oil smoke. This purpose is achieved through the following technical solutions:

[0006] A first aspect of the present invention provides a smoke exhaust pipe for an oil fume extraction device, the smoke exhaust pipe comprising:

[0007] a pipe body, the pipe body being used to communicate with the volute of the oil fume extraction device;

[0008] A diverter is arranged in the tube body, and the diverter includes a first diverter portion having a first air-guiding surface. The first diverter portion is arranged corresponding to the passing position of the oil smoke with a flow component. The first air-guiding surface is inclined to the length direction of the tube body and is arranged away from the volute tongue of the volute. The first air-guiding surface is used to adjust the flow direction of the oil smoke with a flow component so that the flow direction of the oil smoke with a flow component is consistent with the length direction of the tube body.

[0009] According to the smoke exhaust pipe of the present invention, when the smoke exhaust pipe is used for an oil fume suction device, the pipe body of the smoke exhaust pipe is connected to the volute of the oil fume suction device. Under the action of the fan of the oil fume suction device, the oil fume enters the volute through the air inlet of the volute, and then enters the pipe body through the air outlet of the volute. Part of the oil fume entering the pipe body has a transverse flow component. The first air guide surface guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the pipe body, that is, the oil fume in the pipe body flows along the length direction of the pipe body, thereby reducing the loss of oil fume flow energy, improving the oil fume emission effect, and further improving the user experience.

[0010] In addition, the smoke exhaust pipe according to the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the first diverter portion is inclined toward a side away from the volute tongue, and a side surface of the first diverter portion close to the volute tongue serves as the first air guiding surface.

[0012] In some embodiments of the present invention, the first diversion portion is an arc-shaped plate, and the convex surface of the arc-shaped plate is the first air guiding surface.

[0013] In some embodiments of the present invention, the first diverter portion is further provided with a second air guide surface, and the second air guide surface is located on the side of the first diverter portion facing the inflow direction of the oil smoke having a flow component.

[0014] In some embodiments of the present invention, the second wind guiding surface is a second convex arc surface.

[0015] In some embodiments of the present invention, one side of the first diverter portion cooperates with the inner wall of the tube body, and the other side of the first diverter portion is close to the middle of the tube body.

[0016] In some embodiments of the present invention, the diverter further includes a second diverter portion, both ends of the second diverter portion are respectively connected to the inner wall of the tube body, and the first diverter portion is connected to the second diverter portion.

[0017] In some embodiments of the present invention, the second diverter portion is a plate-shaped member, which is disposed along the length direction of the tube body and passes through the middle portion of the tube body.

[0018] A second aspect of the present invention provides an oil fume extraction device, comprising:

[0019] A smoke exhaust pipe, wherein the smoke exhaust pipe is the smoke exhaust pipe described above;

[0020] a volute, wherein the air outlet of the volute is connected to the smoke exhaust pipe, and the volute tongue of the volute is arranged close to the first air guide surface;

[0021] A fan is arranged in the volute.

[0022] According to the oil fume suction device of the present invention, the pipe body of the smoke exhaust pipe is connected with the volute of the oil fume suction device. Under the action of the fan of the oil fume suction device, the oil fume enters the volute through the air inlet of the volute, and then enters the pipe body through the air outlet of the volute. Part of the oil fume entering the pipe body has a transverse flow component. The first air guide surface guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the pipe body, that is, the oil fume in the pipe body flows along the length direction of the pipe body, thereby reducing the loss of oil fume flow energy, improving the oil fume emission effect, and further improving the user experience.

[0023] A third aspect of the present invention provides a combined cooking device, comprising:

[0024] An oil fume extraction device, wherein the oil fume extraction device is the oil fume extraction device as described above;

[0025] a box body, wherein the oil fume suction device is arranged in the box body;

[0026] A cooking table, wherein a cooking position is provided on the cooking table and the cooking table cooperates with the box body;

[0027] A heating device is matched with the cooking table and is arranged corresponding to the cooking position.

[0028] According to the combined cooking device of the present invention, the pipe body of the smoke exhaust pipe of the oil fume suction device is connected to the volute of the oil fume suction device. Under the action of the fan of the oil fume suction device, the oil fume enters the volute through the air inlet of the volute, and then enters the pipe body through the air outlet of the volute. Part of the oil fume entering the pipe body has a transverse flow component. The first air guide surface guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the pipe body, that is, the oil fume in the pipe body flows along the length direction of the pipe body, thereby reducing the loss of oil fume flow energy, improving the oil fume emission effect, and further improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0030] Figure 1 Schematically shows a structural diagram of a combined cooking device according to an embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic structural diagram (partial structure) of the oil fume extraction device of the combined cooking device shown in FIG;

[0032] Figure 3 for Figure 2 A schematic structural diagram of a smoke exhaust pipe of an oil fume extraction device shown in FIG;

[0033] Figure 4 for Figure 3 A cross-sectional view of the exhaust pipe is shown in FIG.

[0034] The reference numerals are as follows:

[0035] 100 is a combination cooking device;

[0036] 10 is a cooking table, 11 is a cooking position;

[0037] 20 is a box body;

[0038] 30 is a fume extraction device;

[0039] 31 is a smoke exhaust pipe, 311 is a pipe body, 312 is a diverter, 3121 is a first diverter, 31211 is a first air guide surface, 31212 is a second air guide surface, and 3122 is a second diverter.

[0040] 32 is a volute. DETAILED DESCRIPTION

[0041] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0042] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0043] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0044] For ease of description, spatially relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "below" another element or feature would then be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein are interpreted accordingly.

[0045] like Figures 1 to 4 As shown, according to an embodiment of the present invention, a smoke exhaust pipe 31 is proposed for use in an oil fume suction device 30. The smoke exhaust pipe 31 includes a pipe body 311 and a diverter 312. The pipe body 311 is used to communicate with the volute 32 of the oil fume suction device 30. The diverter 312 is arranged in the pipe body 311. The diverter 312 includes a first diverter portion 3121 having a first air guide surface 31211. The first diverter portion 3121 is arranged corresponding to the passing position of the oil fume with a flow component. The first air guide surface 31211 is inclined to the length direction of the pipe body 311 and is arranged close to the volute tongue of the volute 32. The first air guide surface 31211 is used to adjust the flow direction of the oil fume with a flow component so that the flow direction of the oil fume with a flow component is consistent with the length direction of the pipe body 311.

[0046] Specifically, when the smoke exhaust pipe 31 is used for the oil fume suction device 30, the pipe body 311 of the smoke exhaust pipe 31 is connected to the volute 32 of the oil fume suction device 30. Under the action of the fan of the oil fume suction device 30, the oil fume enters the volute 32 through the air inlet of the volute 32, and then enters the pipe body 311 through the air outlet of the volute 32. Part of the oil fume entering the pipe body 311 has a transverse flow component. The first air guide surface 31211 guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the pipe body 311, that is, the oil fume in the pipe body 311 flows along the length direction of the pipe body 311, thereby reducing the loss of oil fume flow energy, improving the oil fume emission effect, and thus improving the user experience.

[0047] It should be understood that the motor of the fan drives the impeller to rotate, and through the rotation, the oil smoke enters the tube body 311 of the exhaust pipe 31 through the volute 32 under the action of centrifugal force. A part of the oil smoke entering the tube body 311 is a smooth airflow (the flow direction of the oil smoke is consistent with the length direction of the tube body 311), and the other part of the oil smoke is oil smoke with a transverse flow component (the flow direction of the oil smoke is inconsistent with the length direction of the tube body 311). The position of the first diversion part 3121 of the diverter 312 in the tube body 311 corresponds to the position where the oil smoke with a transverse flow component passes. When the oil smoke with a transverse flow component passes through, the first wind guide surface 31211 guides and diverts the oil smoke with a transverse flow component, so that the oil smoke with a transverse flow component is converted into a smooth airflow, thereby reducing the energy loss during the flow of the oil smoke, so that the emission effect of the oil smoke is guaranteed.

[0048] Taking the horizontal placement of the volute 32 as an example, the air inlet of the volute 32 is located at the top of the volute 32, and the air outlet of the volute 32 is located at the side of the volute 32. The fan is arranged in the volute 32. After the fan is started, the oil smoke enters the volute 32 through the air inlet, and then enters the tube body 311 of the smoke exhaust pipe 31 through the air outlet. At this time, the oil smoke passing through the upper half of the air outlet (the side close to the top of the volute 32) has a horizontal flow component, which is a non-smooth airflow, and the oil smoke passing through the lower half of the air outlet (the side close to the bottom of the volute 32) is a smooth airflow. The first diversion part 3121 of the diverter 312 is arranged in the tube body 311 of the smoke exhaust pipe 31 and corresponds to the upper half of the air outlet, so that the oil smoke with horizontal flow is guided and diverted, reducing the energy loss during the flow of oil smoke and ensuring the emission effect of oil smoke.

[0049] It is further understood that if Figures 2 to 4As shown, the first diverter 3121 is inclined away from the volute tongue, and the side of the first diverter 3121 near the volute tongue serves as the first air-guiding surface 31211. Specifically, the diverter 312 is disposed within the tube body 311, and the end of the first diverter 3121 facing the air outlet of the volute 32 is inclined away from the volute tongue, such that the side of the first diverter 3121 near the volute tongue forms an angle with the longitudinal direction of the tube body 311. The side of the first diverter 3121 near the volute tongue serves as the first air-guiding surface 31211. When oil smoke enters the tube body 311 of the exhaust pipe 31 through the air outlet of the volute 32, the portion of the oil smoke with a transverse flow component is guided and diverted by the inclined first air-guiding surface 31211, causing the oil smoke with the transverse flow component to flow along the longitudinal direction of the tube body 311, further reducing energy loss during the flow of the oil smoke and ensuring efficient oil smoke exhaust.

[0050] It should be understood that the overall inclination of the first diverter portion 3121 can effectively reduce the volume of the first diverter portion 3121, further ensuring the effect of guiding and diverting the oil smoke with a horizontal flow component; in addition, the overall inclination of the first diverter portion 3121 can effectively reduce the mass of the diverter 312 while ensuring the guiding and diverting effect, thereby realizing a lightweight design of the smoke exhaust pipe 31.

[0051] Furthermore, if Figures 2 to 4 As shown, the first diverter portion 3121 is an arc-shaped plate, and the convex surface of the arc-shaped plate serves as the first air-guiding surface 31211. Specifically, the arc-shaped plate is formed by integrally bending a plate-like member. One side of the arc-shaped plate is a concave arc surface, and the side of the arc-shaped plate opposite the concave arc surface is a convex arc surface. When the arc-shaped plate is disposed within the tube body 311, the convex arc surface faces the side of the volute tongue, and the entire convex arc surface constitutes the first air-guiding surface 31211. When the oil smoke passes through the first diverter portion 3121, the oil smoke with a transverse flow component is guided and separated by the convex arc surface, causing the oil smoke with a transverse flow component to flow along the length of the tube body 311. Because the convex arc surface constitutes the first air-guiding surface 31211, the resistance generated during the process of guiding and diverting the oil smoke with a transverse flow component is reduced, thereby ensuring the flow velocity of the oil smoke and further enhancing the exhaust efficiency of the oil smoke.

[0052] It should be pointed out that the curvature of the convex arc surface is related to the flow rate of the oil smoke, and the specific curvature parameters of the convex arc surface are set according to the specific flow rate of the oil smoke. Here, this application will not go into details.

[0053] In other embodiments, the first diversion portion 3121 is a straight plate-like member, and the plane of the plate-like member on one side constitutes the first air guide surface 31211. The straight plate-like member has a simple structure and is easy to process and manufacture, effectively reducing the manufacturing cost of the smoke exhaust pipe 31.

[0054] Furthermore, if Figure 4 As shown, the first diverter 3121 is further provided with a second air guide surface 31212, which is located on the side of the first diverter 3121 facing the inflow direction of the oil smoke with a flow component. Specifically, the diverter 312 is disposed within the tube body 311, and the first diverter 3121 has a side facing the inflow direction of the oil smoke, which constitutes the second air guide surface 31212. When the oil smoke enters the tube body 311 of the exhaust pipe 31 through the volute 32, the oil smoke with a transverse flow component is first guided and diverted by the second air guide surface 31212, and then guided and diverted by the first air guide surface 31211, ultimately causing the oil smoke with a transverse flow component to flow along the length direction of the tube body 311. The provision of the second air guide surface 31212 further improves the effect of guiding and diverting the oil smoke with a transverse flow component, further avoids energy loss of the oil smoke during the flow process, and further ensures the exhaust effect of the oil smoke.

[0055] Furthermore, if Figure 4 As shown, the second air guide surface 31212 is a second convex curved surface. Specifically, when oil smoke with a transverse flow component enters the tube body 311 of the exhaust pipe 31, the oil smoke with the transverse flow component is guided and diverted by the second convex curved surface, and then further guided and separated by the first air guide surface 31211, thereby aligning the flow direction of the oil smoke with the transverse flow component with the longitudinal direction of the tube body 311. In addition, the provision of the second convex curved surface can prevent the whistling and additional localized noise generated when the oil smoke with the transverse flow component is guided and diverted, thereby reducing the noise during the oil smoke exhaust process and further improving the user experience.

[0056] It should be pointed out that in the present application, the second air guide surface 31212 is located on the end face of the arc plate facing the air outlet of the volute 32, the width of the second air guide surface 31212 is the thickness of the arc plate, and the length of the second air guide surface 31212 is the length of the arc plate. By chamfering the end face of the arc plate facing the air outlet of the volute 32 to form a second convex arc surface, the difficulty of processing is reduced, and the production cost is reduced.

[0057] In other embodiments, the second air guide surface 31212 is an inclined surface, which is arranged toward the air outlet of the volute 32 and is arranged at an angle to the first air guide surface 31211, further ensuring the guiding and diverting effect of the oil smoke with a horizontal flow component.

[0058] In addition, the material of the first diverter portion 3121 can be metal or non-metal. When the first diverter portion 3121 is non-metal (plastic or nylon, etc.), the arc plate has a certain thickness, and the side of the arc plate facing the inlet of the tube body 311 also has a certain thickness. The thickness position is rounded to form a second air-guiding surface 31212 of the second convex arc surface; when the first diverter portion 3121 is metal (iron or stainless steel, etc.), the thickness of the first diverter portion 3121, which is a curved plate, is relatively small, and the thickness of the side of the arc plate facing the inlet of the tube body 311 is relatively thin, and no rounding is required at this time.

[0059] Furthermore, if Figures 2 to 4 As shown, one side of the first diverter 3121 cooperates with the inner wall of the tube body 311, and the other side of the first diverter 3121 is close to the middle of the tube body 311. Specifically, the tube body 311 has a smoke exhaust channel through which oil smoke passes. The diverter 312 is disposed in the smoke exhaust channel of the tube body 311. One end of the first diverter 3121 cooperates with the inner wall of the smoke exhaust channel. The first diverter 3121 extends toward the middle of the tube body 311. After being fixed, the first diverter 3121 forms a diversion structure for part of the smoke exhaust channel. This diversion structure is provided corresponding to the oil smoke with a transverse flow component when the oil smoke passes through the smoke exhaust channel. When the oil smoke with a transverse flow component passes through the first diverter 3121, it can effectively guide and divert the oil smoke with the transverse flow component, thereby further ensuring the exhaust effect of the oil smoke.

[0060] It should be understood that after the oil smoke from the volute 32 enters the tube body 311 of the exhaust pipe 31 through its air outlet, the oil smoke with a transverse flow component is located on one side of the exhaust channel of the tube body 311 (which can be the upper side, lower side, left side or right side). The first diversion part 3121 is set corresponding to the oil smoke with a transverse flow component and one side of the first diversion part 3121 is coordinated with the tube body 311, which avoids the oil smoke with a transverse flow component from passing through the space between the first diversion part 3121 and the inner wall of the exhaust channel, so that the diversion effect of the oil smoke is further improved, and the emission effect of the oil smoke is further improved.

[0061] In addition, the first diversion portion 3121 extends along the radial cross-section of the tube body 311 , further ensuring the effect of guiding and diverting the oil smoke with a transverse flow component.

[0062] Furthermore, if Figures 2 to 4As shown, the diverter 312 further includes a second diverter portion 3122, the two ends of which are respectively connected to the inner wall of the tube body 311, and the first diverter portion 3121 is connected to the second diverter portion 3122. Specifically, the two ends of the second diverter portion 3122 are respectively connected to the inner wall of the tube body 311, and the first diverter portion 3121 is fixedly connected to the second diverter portion 3122, with one side engaging with the inner wall of the tube body 311. When oil smoke with a transverse flow component enters the tube body 311 of the smoke exhaust pipe 31, the oil smoke with a transverse flow component is first guided and diverted by the first diverter portion 3121, and then guided and diverted by the second diverter portion 3122, further improving the guiding and diverting effect of the oil smoke with a transverse flow component, thereby further improving the exhaust effect of the oil smoke. In addition, the first diverter portion 3121 is connected to the second diverter portion 3122, which effectively improves the fixing strength and stability of the first diverter portion 3121, thereby ensuring the effect of the first diverter portion 3121 in guiding and separating the oil smoke with a horizontal flow component.

[0063] It should be pointed out that the first diverter portion 3121 and the second diverter portion 3122 can be an integral structure or a split structure. When the first diverter portion 3121 and the second diverter portion 3122 are an integral structure, the two can be manufactured by injection molding or other methods, thereby ensuring the strength and stability of the connection position between the two; when the first diverter portion 3121 and the second diverter portion 3122 are a split structure, the two are connected and fixed by any one of bonding, riveting, welding, etc. When a component fails, the first diverter portion 3121 and the second diverter portion 3122 can be separated, which effectively reduces the maintenance cost.

[0064] In addition, the number of diverter pieces 312 can be one or more. When there are multiple diverter pieces 312, each diverter piece 312 is arranged at intervals in the tube body 311, and the linearity of the first diverter portion 3121 and the second diverter portion 3122 in each diverter piece 312 can be consistent or inconsistent.

[0065] In other embodiments, the first diversion portion 3121 is arranged according to specific working conditions and flow fields, and the second diversion portion 3122 can be divided into more sections for profile design according to different flow fields.

[0066] Specifically, if Figures 2 to 4As shown, the second diverter 3122 is a plate-shaped member, which is arranged along the length direction of the tube body 311 and passes through the middle of the tube body 311. Specifically, the second diverter 3122 is a straight plate-shaped member, which is arranged along the length direction of the tube body 311 and passes through the middle of the tube body 311. One end of the first diverter 3121 is engaged with the end face of the second diverter 3122 facing the air outlet of the volute 32. The first diverter 3121 extends to the middle of the tube body 311. When oil smoke with a transverse flow component passes through the first diverter 3121, it can cover all positions where the oil smoke with the transverse flow component passes, avoiding the leakage of oil smoke with the transverse flow component, so that the guided diversion is further guaranteed.

[0067] It should be pointed out that the position where the first diversion part 3121 and the second diversion part 3122 are connected is a seamless structure, which reduces the resistance during the guiding and diversion process of the oil smoke with a horizontal flow component, so that the flow speed of the oil smoke is guaranteed, thereby ensuring the emission effect of the oil smoke.

[0068] In addition, the material of the second diverter portion 3122 can be metal or non-metal. When the second diverter portion 3122 is non-metal (plastic or nylon, etc.), the second diverter portion 3122, which is a plate-shaped member, has a certain thickness, and the side of the plate-shaped member facing the inlet of the tube body 311 also has a certain thickness. The thickness position is rounded to form a third air-guiding surface of the third convex arc surface; when the second diverter portion 3122 is metal (iron or stainless steel, etc.), the thickness of the second diverter portion 3122, which is a curved plate, is smaller, and the thickness of the side of the plate-shaped member facing the inlet of the tube body 311 is thinner, and no rounding is required at this time.

[0069] In addition, the second diversion portion 3122 can be matched with the tube body 311 by bonding, riveting or welding. Here, this application no longer limits the specific connection method between the second diversion portion 3122 and the tube body 311.

[0070] like Figures 1 to 4 As shown, the present invention also proposes a fume suction device 30, which includes a smoke exhaust pipe 31, a volute 32 and a fan (not shown). The smoke exhaust pipe 31 is the smoke exhaust pipe 31 described above, the air outlet of the volute 32 is connected to the smoke exhaust pipe 31, the volute tongue of the volute 32 is arranged close to the first air guide surface 31211 of the diverter 312, and the fan is arranged in the volute 32.

[0071] Specifically, the tube body 311 of the smoke exhaust pipe 31 is connected to the volute 32 of the oil fume suction device 30. Under the action of the fan of the oil fume suction device 30, the oil fume enters the volute 32 through the air inlet of the volute 32, and then enters the tube body 311 through the air outlet of the volute 32. Part of the oil fume entering the tube body 311 has a transverse flow component. The first air guide surface 31211 guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the tube body 311, that is, the oil fume in the tube body 311 flows along the length direction of the tube body 311, thereby reducing the loss of oil fume flow energy, improving the oil fume emission effect, and thus improving the user experience.

[0072] like Figures 1 to 4 As shown, the present invention further proposes a combined cooking device 100, which includes a fume suction device 30, a housing 20, a cooking table 10 and a heating device (not shown). The fume suction device 30 is the fume suction device 30 described above, and the fume suction device 30 is arranged in the housing 20. A cooking position 11 is provided on the cooking table 10, and the cooking table 10 cooperates with the housing 20. The heating device cooperates with the cooking table 10 and is arranged corresponding to the cooking position 11.

[0073] Specifically, the tube body 311 of the exhaust pipe 31 of the oil fume suction device 30 is connected to the volute 32 of the oil fume suction device 30. Under the action of the fan of the oil fume suction device 30, the oil fume enters the volute 32 through the air inlet of the volute 32, and then enters the tube body 311 through the air outlet of the volute 32. Part of the oil fume entering the tube body 311 has a transverse flow component. The first air guide surface 31211 guides the oil fume with the transverse flow component so that the flow direction of the oil fume with the transverse flow component is consistent with the length direction of the tube body 311, that is, the oil fume in the tube body 311 flows along the length direction of the tube body 311, thereby reducing the loss of oil fume flow energy, improving the oil fume emission effect, and thus improving the user experience.

[0074] It should be pointed out that the heating device can be an electromagnetic heating structure or a gas heating structure. When the heating device can be an electromagnetic heating structure, the heating device is arranged inside the box 20 and corresponds to the cooking position 11 of the cooking table 10. When the heating device can be a gas heating structure, the heating device is arranged outside the box 20 and corresponds to the cooking position 11 of the cooking table 10.

[0075] In addition, the above-mentioned combined cooking device is an integrated stove, etc. For the structures of other parts of the combined cooking device, please refer to the existing technology and will not be described in detail here.

[0076] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A smoke exhaust pipe for a fume extraction device, characterized in that: The smoke exhaust pipe comprises: a pipe body, the pipe body being used to communicate with the volute of the oil fume extraction device; A flow diverter, the flow diverter being arranged in the tube body, the flow diverter comprising a first flow diverter portion having a first air guiding surface, the first flow diverter portion being arranged corresponding to a position where the oil smoke having a flow component passes through, wherein one side of the first flow diverter portion cooperates with an inner wall of the tube body, the other side of the first flow diverter portion is close to a middle portion of the tube body, the first air guiding surface being inclined with respect to a length direction of the tube body and being arranged away from a volute tongue of the volute, the first air guiding surface being used to adjust a flow direction of the oil smoke having a flow component so that the flow direction of the oil smoke having a flow component is consistent with the length direction of the tube body; The diverter also includes a second diverter portion, both ends of which are connected to the inner wall of the tube body respectively, the first diverter portion is connected to the second diverter portion, and the first diverter portion and the second diverter portion are an integrated structure.

2. The smoke exhaust pipe according to claim 1, characterized in that: The first diverter portion is inclined toward a side away from the volute tongue, and a side surface of the first diverter portion close to the volute tongue serves as the first air guiding surface.

3. The smoke exhaust pipe according to claim 2, characterized in that: The first diversion portion is an arc-shaped plate, and the convex surface of the arc-shaped plate is the first air guiding surface.

4. The smoke exhaust pipe according to claim 2, characterized in that: The first diverter portion is further provided with a second air guiding surface, and the second air guiding surface is located on the side of the first diverter portion facing the inflow direction of the oil smoke having a flow component.

5. The smoke exhaust pipe according to claim 4, characterized in that: The second wind guiding surface is a second convex arc surface.

6. The smoke exhaust pipe according to claim 1, characterized in that: The second diversion portion is a plate-shaped member, which is arranged along the length direction of the tube body and passes through the middle portion of the tube body.

7. A fume extraction device, characterized in that: The oil fume extraction device comprises: A smoke exhaust pipe, wherein the smoke exhaust pipe is the smoke exhaust pipe according to any one of claims 1 to 6; a volute, wherein the air outlet of the volute is connected to the smoke exhaust pipe, and the volute tongue of the volute is arranged close to the first air guide surface; A fan is arranged in the volute.

8. A combined cooking device, characterized in that: The combined cooking device comprises: An oil fume extraction device, wherein the oil fume extraction device is the oil fume extraction device according to claim 7; a box body, wherein the oil fume suction device is arranged in the box body; A cooking table, wherein a cooking position is provided on the cooking table and the cooking table cooperates with the box body; A heating device is matched with the cooking table and is arranged corresponding to the cooking position.

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