Smoke suction assembly discharging structure and table top range hood

Abstract

The utility model relates to the field of desktop range hoods, in particular to a smoke suction component discharge structure and a desktop range hood. The smoke suction assembly discharging structure comprises a smoke suction assembly, the smoke suction assembly comprises a discharging assembly, a driving assembly and a control assembly, the discharging assembly is provided with a smoke suction opening located in one end of the discharging assembly and a discharging opening located in the other end of the discharging assembly, the control assembly is fixed to the middle of the discharging opening, and a discharging channel is formed between the discharging opening and the control assembly. The driving assembly drives the lampblack to be sucked from the lampblack suction opening and discharged from the discharging channel at an angle. The switch of the driving assembly and the smoking speed are adjusted through the control assembly, and different cooking requirements are met; besides, the control assembly is arranged in the middle of the discharge port, so that the oil smoke is effectively blocked and blown out along the edge, the influence on the environment and users is reduced, and the structural space is saved; in addition, an angle discharge channel is formed between the discharge port and the control assembly, so that oil smoke can be dispersed, and direct discharge and direct blowing are avoided.

Description

Technical Field

[0001] This utility model relates to the field of desktop range hoods, specifically a smoke extraction component structure and a desktop range hood. Background Technology

[0002] In modern homes and small work environments, countertop range hoods are increasingly important as devices for reducing cooking fumes, odors, and other pollutants. However, existing countertop range hoods still have certain design limitations. When venting fumes, current countertop range hoods blow them directly onto surrounding objects or nearby walls, creating stubborn grease stains that are difficult to clean. This not only affects aesthetics but also increases the difficulty and frequency of cleaning. Furthermore, when a user happens to be near the exhaust vent, the fumes blow directly at them, causing discomfort.

[0003] Therefore, it is necessary to develop a smoke extraction structure and desktop range hood to avoid direct exhaust of fumes that could cause grease buildup on surrounding items and potentially cause discomfort to users. Utility Model Content

[0004] To address the problems caused by direct emission of oil fumes in the prior art mentioned above, the technical solution adopted by this utility model is as follows:

[0005] A smoke extraction assembly emission structure includes a smoke extraction assembly, wherein the smoke extraction assembly includes an emission assembly, a drive assembly located within the emission assembly, and a control assembly for controlling the operation of the drive assembly. The emission assembly has a smoke extraction port at one end and an emission port at the other end. The control assembly is fixed at the middle position of the emission port. An emission channel is formed between the emission port and the control assembly. The drive assembly drives the fumes to be drawn in from the smoke extraction port and discharged at an angle from the emission channel.

[0006] Furthermore, in the smoking component emission structure described in the solution, the control component includes a flow guide shell installed inside the emission port and a control module installed inside the flow guide shell. The central axis of the flow guide shell coincides with the central axis of the emission port. The emission port has an inner wall. The emission channel is formed by the inner wall of the emission port and the flow guide shell. The flow guide shell has a flow guide portion extending towards the smoking port side. The flow guide portion is located in the inner cavity of the emission port.

[0007] Furthermore, in the smoke extraction component emission structure described in the solution, the emission port has a funnel-shaped cross-section, the guide portion is provided with a guide surface for guiding the oil fumes to move towards the inner wall of the emission port, the guide surface is arc-shaped, and the emission channel is annular.

[0008] Furthermore, in the smoking component emission structure described in the solution, the radial width of the emission channel gradually decreases from the smoking port side to the emission port side.

[0009] Furthermore, in the smoking component emission structure described in the solution, the inner wall cross-section of the emission port is arranged in a wavy shape.

[0010] Furthermore, in the smoke extraction component emission structure described in the solution, the emission component is further provided with an emission component cavity connecting the smoke extraction port and the emission port. The emission channel is provided with an entry area for oil fumes to enter and an emission area for oil fumes to be discharged, which are connected to the emission component cavity. The cross-section of the emission area is annular.

[0011] Furthermore, in the smoking component emission structure described in the solution, the inner wall cross-section of the emission port is set at an angle α with the central axis of the emission component, and the angle α ranges from 20° to 80°.

[0012] Furthermore, in the smoking component emission structure described in the solution, the emission component cavity is provided with a first constant diameter section connected to the smoking port, a second constant diameter section connected to the emission port, and a third constant diameter section connecting the first constant diameter section and the second constant diameter section through a gradual transition section. The diameter of the third constant diameter section is larger than the diameters of the first constant diameter section and the second constant diameter section, and the annular radial width S3 of the emission zone cross section is 1 / 6 to 1 / 4 of the diameter S4 of the second constant diameter section.

[0013] Furthermore, in the smoking component emission structure described in the solution, the emission component is further provided with a drive component mounting part connected to the emission component cavity, the central axis of the drive component mounting part coincides with the central axis of the emission component cavity, the flow guide shell is connected to the drive component mounting part on the side near the emission port, the control component further includes a protective shell connected to the side of the flow guide shell away from the flow guide part, and the control module is installed between the flow guide shell and the protective shell.

[0014] Furthermore, the desktop range hood includes a smoke extraction structure.

[0015] The beneficial effects of this utility model are as follows:

[0016] This invention uses a control component to control the switching of the drive component and adjust its smoke extraction speed, thus flexibly addressing the needs of fume treatment under different cooking conditions. Furthermore, by installing the control component in the middle of the exhaust port, it not only effectively blocks the fumes, preventing them from being blown directly out of the exhaust port, but also allows them to escape along the edge of the exhaust port, avoiding direct impact on the surrounding environment and users. This also saves structural space in the smoke extraction component, making the overall structure more compact. In addition, an exhaust channel is formed between the exhaust port and the control component, angled to the central axis of the exhaust component. This allows the fumes to be discharged at a certain angle from the exhaust channel around the exhaust port, effectively dispersing the fumes and preventing direct exhaust. Simultaneously, the narrowing of the exhaust channel relative to the inner cavity of the exhaust component accelerates the emission speed of the fumes at the exhaust port, thereby reducing the problem of fume retention.

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the emission structure of a smoke extraction component according to the present invention.

[0019] Figure 2 This is a schematic diagram of the emission structure of a smoke extraction component according to the present invention.

[0020] Figure 3 This is a cross-sectional schematic diagram of the emission structure of a smoke extraction component according to the present invention.

[0021] Figure 4 This is a schematic diagram of the appearance of the emission component of a smoke extraction component according to the present invention.

[0022] Figure 5 This is an exploded schematic diagram of the emission component of a smoke extraction component emission structure according to the present invention.

[0023] Figure 6 This is a cross-sectional schematic diagram of the emission component of a smoke extraction component according to the present invention.

[0024] Figure 7 This is an enlarged schematic diagram of part I of the emission component of a smoke extraction component emission structure according to the present invention.

[0025] Figure 8 This is a schematic diagram of the appearance of the control component of the smoke emission structure of the present invention.

[0026] Figure 9 This is an exploded schematic diagram of the control component of a smoke extraction structure according to the present invention.

[0027] Figure 10This is a cross-sectional schematic diagram of the control component of a smoke extraction structure according to the present invention.

[0028] Figure 11 This is a schematic diagram of the appearance of the desktop range hood of this utility model. Detailed Implementation

[0029] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] Example 1, as Figure 1-10 The smoke extraction assembly exhaust structure shown includes a smoke extraction assembly 1, wherein the smoke extraction assembly 1 includes an exhaust assembly 11, a drive assembly 12 located within the exhaust assembly 11, and a control assembly 16 for controlling the operation of the drive assembly 12. The exhaust assembly 11 has a smoke extraction port 111 at one end and an exhaust port 112 at the other end. The control assembly 16 is fixed at the middle position of the exhaust port 112, and an exhaust channel 1123 is formed between the exhaust port 112 and the control assembly 16. The drive assembly 12 drives the fumes to be drawn in from the smoke extraction port 111 and discharged at an angle from the exhaust channel 1123.

[0031] This invention uses a control component 16 to control the switching of the drive component 12 and adjust its smoke extraction speed, thereby flexibly responding to the needs of fume treatment under different cooking conditions. Furthermore, by installing the control component 16 in the middle of the exhaust port 112, it not only effectively blocks the fumes, preventing them from being blown directly out of the exhaust port 112, but also allows the fumes to be blown out along the edge of the exhaust port 112, avoiding direct impact on the surrounding environment and users, but also saves structural space in the smoke extraction component 1, making the overall structure more compact. In addition, an exhaust channel 1123 is formed between the exhaust port 112 and the control component 16, which is angled to the central axis of the exhaust component 11. This not only allows the fumes to be discharged at a certain angle from the exhaust channel 1123 around the exhaust port 112, effectively dispersing the fumes and avoiding direct exhaust and blowing, but also, the narrowing of the exhaust channel 1123 relative to the inner cavity of the exhaust component 11 accelerates the emission speed of the fumes at the exhaust port 112, thereby reducing the problem of fume retention.

[0032] Specifically, the control component 16 can not only control the switching of the drive component 12, but also adjust its smoke extraction speed. This allows the device to flexibly adjust according to different cooking conditions, effectively handling both frying and steaming, ensuring fresh air in the kitchen. Furthermore, in this embodiment, by installing the control component 16 in the middle of the exhaust port 112 and enclosing the electronic components in the casing, this arrangement not only effectively blocks the fumes from being directly blown out of the exhaust port 112, protecting the surrounding environment from oil stains and preventing users from feeling uncomfortable due to direct fumes, but also helps save internal space of the smoke extraction component 1, making the overall structure more compact and improving the product's portability and aesthetics. The exhaust channel 1123 formed between the exhaust port 112 and the control component 16 is set at a certain angle to the central axis of the exhaust component 11, so that the oil fumes can be effectively dispersed and discharged from the periphery of the exhaust port 112 at a certain angle. This setting effectively reduces the concentrated blowing force on the front of the exhaust port 112 when the oil fumes are discharged, and solves the problem of direct exhaust and direct blowing of oil fumes in the traditional smoke extraction component exhaust structure. Furthermore, the control component 16 can control the working state of the drive component 12 by means of electronic or mechanical means. Furthermore, in this embodiment, the exhaust channel 1123 is arranged in a ring, so that the oil fumes are discharged in a ring shape, thereby reducing the concentrated blowing force on the front of the exhaust port 112.

[0033] Example 2, further, as Figure 1-10 The illustration shows a smoking assembly emission structure, wherein the control assembly 16 includes a flow guide housing 161 installed inside the emission port 112 and a control module 162 installed inside the flow guide housing 161. The central axis of the flow guide housing 161 coincides with the central axis of the emission port 112. The emission port 112 is provided with an emission port inner wall 1121. The emission channel 1123 is formed by the emission port inner wall 1121 and the flow guide housing 161. The flow guide housing 161 is provided with a flow guide portion 1611 extending toward the smoking port 111. The flow guide portion 1611 is located in the inner cavity of the emission port 112.

[0034] This embodiment includes features of Embodiment 1, but differs from Embodiment 1 in that the present invention enhances the dispersion of oil fume emissions by aligning the central axis of the guide shell 161 with the central axis of the discharge port 112, i.e., the guide shell 161 is installed in the middle of the discharge port 112. Specifically, the guide shell 161 not only effectively prevents oil fumes from being blown directly out of the discharge port 112, but also guides the oil fumes into the discharge channel 1123 and then through the guide part 1611 to the inner wall 1121 of the discharge port, and then discharges along the inner wall 1121 of the discharge port, thereby achieving a more uniform distribution of oil fumes. Furthermore, the control module 162 in the control component 16 can be electronic or mechanical, used to control the switch of the drive component 12 and adjust its smoke extraction speed, so that the user can flexibly adjust the working state of the equipment according to the actual cooking situation. In this embodiment, the control module 162 is an electronic touch control; furthermore, in other embodiments, the control module 162 can be a mechanical knob control.

[0035] Example 3, further, as Figure 1-10 The smoke extraction assembly exhaust structure shown has an exhaust port 112 with a funnel-shaped cross-section, a guide surface 16111 for guiding the fumes to move towards the inner wall 1121 of the exhaust port, the guide surface 16111 being arc-shaped, and an exhaust channel 1123 being annular.

[0036] This embodiment incorporates features of Embodiment Two, but differs from Embodiment Two in that, in this invention, the exhaust port 112 has a funnel-shaped cross-section. This design reduces the airflow velocity gradient, thereby reducing the impact force of the fumes and improving the efficiency of fume emission. Furthermore, the guide section 1611 is provided with an arc-shaped guide surface 16111 for guiding the fumes towards the inner wall 1121 of the exhaust port. The arc-shaped guide surface 16111 guides the fumes along its arc shape, thereby forcing the fumes to flow towards the inner wall 1121 of the exhaust port, thus forming a shape during the emission process. The diffused shape reduces the impact force when oil fumes enter the exhaust channel 1123. Furthermore, through the cooperation of the inner wall 1121 of the exhaust port and the guide surface 16111, the oil fumes can diffuse at a certain angle during the exhaust process, thereby avoiding the vortex disturbance caused by the traditional right-angle structure, reducing the airflow rewinding phenomenon, and also avoiding the traditional direct blowing structure, reducing the impact force when oil fumes are discharged. Furthermore, the exhaust channel 1123 is arranged in a ring shape, so that the oil fumes are discharged in a ring shape, thereby reducing the concentrated blowing force on the front of the exhaust port 112.

[0037] Example 4, further, as Figure 1-10 The diagram shows a smoke extraction assembly emission structure, wherein the radial width of the emission channel 1123 gradually decreases from the smoke extraction port 111 side to the emission port 112 side.

[0038] This embodiment includes features of Embodiment 3, but differs from Embodiment 3 in that the present invention achieves more efficient fume emission by gradually reducing the radial width of the emission channel 1123 from the side of the smoke inlet 111 to the side of the emission outlet 112. Specifically, as the fume moves from the emission channel 1123 on the side of the smoke inlet 111 towards the emission outlet 112, the channel gradually narrows. This change causes the fume to be discharged at a higher speed. In addition, the setting of the emission angle of the emission channel 1123 effectively guides and disperses the high-speed emission of fume, which not only increases the emission speed of fume and allows it to be discharged further, avoiding the concentrated deposition of fume in a certain local area, but also ensures that the fume will not directly impact the user or surrounding objects when discharged at high speed.

[0039] Example 5, further, as Figure 1-10 The smoke extraction assembly emission structure shown has a wavy cross-section on the inner wall 1121 of the emission port.

[0040] This embodiment includes features of Embodiment 4, but differs from Embodiment 4 in that the present invention sets the cross-section of the inner wall 1121 of the exhaust port to be wavy. This setting can guide the oil fumes to flow along the wavy surface of the inner wall 1121 of the exhaust port, thereby optimizing the exhaust path of the oil fumes, making them more evenly distributed in the exhaust channel 1123, and effectively reducing the impact force of the oil fumes during the exhaust process. Furthermore, the wavy inner wall 1121 of the exhaust port and the arc-shaped guide surface 16111 cooperate to guide the airflow towards the inner wall 1121 of the exhaust port through the arc-shaped guide surface 16111, and the periodic bending of the wavy inner wall 1121 of the exhaust port disturbs the airflow, inducing the exhaust oil fumes to form a swirling flow, making the diffusion of oil fumes slower and more uniform, and better diffused into the air. At the same time, it avoids the problem of oil fumes being directly blown out when the range hood is placed on the wall, causing the wall to turn yellow.

[0041] Example 6, further, as Figure 1-10 The smoke extraction assembly emission structure shown is provided, wherein the emission assembly 11 is further provided with an emission assembly cavity 114 connecting the smoke extraction port 111 and the emission port 112, and the emission channel 1123 is provided with an entry area 11231 connected to the emission assembly cavity 114 for the entry of oil fumes and an emission area 11232 for the emission of oil fumes, wherein the cross-section of the emission area 11232 is annular.

[0042] This embodiment includes the features of Embodiment 5. The difference between this embodiment and Embodiment 5 is that, in this utility model, the emission component 11 is provided with an emission component cavity 114 that connects the smoke inlet 111 and the emission outlet 112, and the emission channel 1123 is provided with an inlet area 11231 that communicates with the emission component cavity 114 and an emission area 11232 for emitting oil fumes. The cross-section of the emission area 11232 is arranged in a ring shape, which realizes multi-directional emission of oil fumes, thereby improving the uniformity and diffusion efficiency of gas emission and avoiding the problem of local oil fume accumulation caused by traditional unidirectional direct emission.

[0043] Example 7, further, as Figure 1-10 The smoke extraction assembly emission structure shown is wherein the cross section of the inner wall 1121 of the emission port is set at an angle α with the central axis of the emission assembly 11, and the angle α ranges from 20° to 80°.

[0044] This embodiment includes features of Embodiment Six, but differs from Embodiment Six in that the cross-section of the inner wall 1121 of the exhaust port is set at an angle α with the central axis of the exhaust component 11. The angle α ranges from 20° to 80°. This setting further optimizes the exhaust path of the fumes. Specifically, when the angle α is set between 20° and 80°, it can effectively balance the speed and direction of the exhaust fumes, ensuring that the fumes are evenly diffused and do not directly impact surrounding objects, reducing the risk of pollution to furniture and other items. If the angle α is greater than 80°, the fumes will be too perpendicular to the central axis of the exhaust component 11, causing the airflow to expand too much and the flow rate to decrease too quickly, thereby shortening the diffusion distance of the fumes and causing the fumes to easily concentrate in a local area closer to the range hood on the desktop. Conversely, if the angle α is less than 20°, the airflow guidance angle is too small, and the exhaust airflow is concentrated and sprayed forward, directly impacting surrounding objects. Furthermore, in this embodiment, the angle α is 20°.

[0045] Example 8, further, as Figure 1-10 The illustration shows a smoke extraction assembly emission structure, wherein the emission assembly cavity 114 is provided with a first constant diameter section 13 connected to the smoke inlet 111, a second constant diameter section 14 connected to the emission outlet 112, and a third constant diameter section 15 connecting the first constant diameter section 13 and the second constant diameter section 14 through a gradual transition section. The diameter of the third constant diameter section 15 is larger than the diameter of the first constant diameter section 13 and the second constant diameter section 14. The annular radial width S3 of the emission zone 11232 cross section is 1 / 6 to 1 / 4 of the diameter S4 of the second constant diameter section 14.

[0046] This embodiment includes features of Embodiment Seven, but differs from Embodiment Seven in that it incorporates a third constant-diameter section 15 within the emission assembly cavity 114, with a diameter larger than that of the first constant-diameter section 13 and the second constant-diameter section 14. Furthermore, a gradual transition section connects these constant-diameter sections, optimizing the airflow path. Specifically, the gradual transition section ensures a smoother transition of airflow from the smaller diameter first constant-diameter section 13 to the larger diameter third constant-diameter section 15, and then back to the smaller diameter second constant-diameter section 14, reducing turbulence and noise and improving the overall user experience. Further, the annular radial width S3 of the emission zone 11232 cross-section is 1 / 6 to 1 / 4 of the diameter S4 of the second constant-diameter section 14. This proportional setting ensures optimal airflow during fume extraction. Uniformity and diffusion efficiency are important. If the annular radial width S3 is greater than 1 / 4 of the diameter S4 of the second constant diameter section 14, the emission zone 11232 will be too wide, the gas discharge speed will be too slow, and the oil fume will not diffuse far enough, resulting in local concentration. Conversely, if the annular radial width S3 is less than 1 / 6 of the diameter S4 of the second constant diameter section 14, the emission zone 11232 will be too narrow, the gas discharge speed will be too fast, and turbulence and noise will be easily generated. It will also cause a strong airflow impact on surrounding objects. Therefore, this setting not only ensures the efficiency of oil fume discharge, but also reduces the impact of oil fume on the surrounding environment. Furthermore, in this embodiment, the α angle is 30°, and the annular radial width S3 of the emission zone 11232 is 1 / 6 of the diameter S4 of the second constant diameter section 14.

[0047] Example 9, further, as Figure 1-10 The diagram illustrates a smoking component emission structure, wherein the emission component 11 further comprises a drive component mounting portion 115 connected to the emission component cavity 114, the central axis of the drive component mounting portion 115 coincides with the central axis of the emission component cavity 114, the flow guide housing 161 is connected to the drive component mounting portion 115 on the side closer to the emission port 112, the control component 16 further comprises a protective housing 163 connected to the side of the flow guide housing 161 away from the flow guide portion 161, and the control module 162 is installed between the flow guide housing 161 and the protective housing 163.

[0048] This embodiment includes features of Embodiment Eight, but differs from Embodiment Eight in that, by setting a drive component mounting part 115 connected to the middle position of the discharge component cavity 114, and connecting the flow guide shell 161 to the drive component mounting part 115, the flow guide shell 161 is installed in the middle position of the discharge port 112. Furthermore, by setting a protective shell 163 in the control component 16 connected to the side of the flow guide shell 161 away from the flow guide part 1611, and installing the control module 162 between the flow guide shell 161 and the protective shell 163, the overall reliability and safety of the equipment are effectively improved. The protective shell 163 can provide additional physical protection for the control module 162, preventing it from being affected by external environmental factors such as oil fumes, dust, and accidental impacts.

[0049] Example 10, further, as Figure 1-10 The smoke extraction assembly exhaust structure shown is provided, wherein the exhaust port 112 is further provided with a diverter 1124 for separating oil fumes.

[0050] This embodiment includes features of Embodiment Nine, but differs from Embodiment Nine in that it improves the efficiency and uniformity of oil fume emission by providing a diverter 1124 for separating oil fumes in the discharge port 112. Furthermore, the diverter 1124 effectively divides and guides the oil fumes before they enter the discharge channel 1123, allowing the oil fumes to be more evenly distributed in different emission paths. This avoids the problem of high local oil fume concentration that may occur in traditional emission structures. Specifically, the diverter 1124 can divide the oil fumes into multiple smaller airflow streams, each of which enters 1123 and is discharged in multiple directions at a specific angle. This design not only improves the diffusion effect of oil fumes but also reduces the direct impact force caused by the direct blowing of oil fumes in traditional exhaust structures. This design effectively prevents oil fumes from being blown directly onto surrounding objects or walls, thereby reducing the possibility of oil stain accumulation and alleviating the cleaning burden on users. Furthermore, the diverter 1124 can also help optimize the flow path of oil fumes, making it smoother and more efficient. The diverter 1124 enables oil fumes to be quickly dispersed before entering the exhaust channel 1123 and discharged along a predetermined path. This design not only improves the speed and efficiency of oil fume emission but also reduces noise and vibration caused by uneven airflow, thereby improving the overall operational stability of the equipment.

[0051] Example 11: This example includes the features of Examples 1 to 10, except that in this example, the α angle is 80° and the annular radial width S3 of the emission zone 11232 is 1 / 4 of the diameter S4 of the second constant diameter segment 14.

[0052] Example 12 includes the features of Examples 1 to 10, except that in this example, the α angle is 49° and the annular radial width S3 of the emission zone 11232 is 1 / 5 of the diameter S4 of the second constant diameter segment 14.

[0053] Example 13, further, as Figure 1-11 The desktop range hood shown includes a smoke extraction structure.

[0054] This embodiment includes the features of embodiments one through twelve, the difference being that the desktop range hood of this utility model integrates a smoke extraction component structure, significantly improving the cleanliness of the kitchen environment and the user experience. Specifically, this smoke extraction component structure effectively solves the problem of direct smoke blowing in traditional desktop range hoods by optimizing the smoke exhaust process. Furthermore, the desktop range hood with integrated smoke extraction component structure can not only quickly remove smoke, odors, and other pollutants generated during cooking, but also prevent smoke from being directly blown onto surrounding items or walls, reducing oil stain accumulation and cleaning difficulty. Furthermore, by adopting an exhaust channel 1123 at a specific angle, smoke can be evenly dispersed and discharged, avoiding the problem of high local smoke concentration. Furthermore, the smoke extraction component structure can also be flexibly adjusted according to different cooking conditions. Specifically, the smoke extraction speed can be adjusted through an electronic or mechanical control module 162 to adapt to different smoke volumes. This setting not only improves smoke treatment efficiency but also reduces noise and vibration, making the kitchen environment more comfortable.

[0055] The above examples are merely illustrative of the technical content of this utility model to facilitate reader understanding, but do not imply that the implementation of this utility model is limited to these embodiments. Any technical extensions or re-creations made based on this utility model are protected by this utility model. The scope of protection of this utility model is defined by the claims.

Claims

1. A smoke extraction assembly emission structure, comprising a smoke extraction assembly (1), characterized in that: The smoking assembly (1) includes an exhaust assembly (11), a drive assembly (12) located within the exhaust assembly (11), and a control assembly (16) for controlling the operation of the drive assembly (12). The exhaust assembly (11) has a smoking port (111) at one end and an exhaust port (112) at the other end. The control assembly (16) is fixed in the middle of the exhaust port (112). An exhaust channel (1123) is formed between the exhaust port (112) and the control assembly (16). The drive assembly (12) drives the fumes to be drawn in from the smoking port (111) and discharged at an angle from the exhaust channel (1123).

2. The smoke extraction structure according to claim 1, characterized in that: The control component (16) includes a flow guide shell (161) installed inside the discharge port (112) and a control module (162) installed inside the flow guide shell (161). The central axis of the flow guide shell (161) coincides with the central axis of the discharge port (112). The discharge port (112) is provided with an inner wall (1121). The discharge channel (1123) is formed by the inner wall (1121) and the flow guide shell (161). The flow guide shell (161) is provided with a flow guide portion (1611) extending toward the smoking port (111). The flow guide portion (1611) is located in the inner cavity of the discharge port (112).

3. The smoke extraction structure according to claim 2, characterized in that: The exhaust port (112) has a funnel-shaped cross-section, and the guide section (1611) is provided with a guide surface (16111) for guiding the oil fumes to move towards the inner wall (1121) of the exhaust port. The guide surface (16111) is arc-shaped, and the exhaust channel (1123) is annular.

4. The smoke extraction structure according to claim 1, characterized in that: The radial width of the discharge channel (1123) gradually decreases from the side of the smoke inlet (111) to the side of the discharge outlet (112).

5. The smoke extraction structure according to claim 2, characterized in that: The inner wall (1121) of the discharge port has a corrugated cross section.

6. The smoke extraction structure according to claim 3, characterized in that: The emission assembly (11) is further provided with an emission assembly cavity (114) that connects the smoke inlet (111) and the emission outlet (112). The emission channel (1123) is provided with an inlet area (11231) that communicates with the emission assembly cavity (114) and is used for the entry of oil fumes, and an emission area (11232) for the emission of oil fumes. The cross-section of the emission area (11232) is annular.

7. The smoke extraction structure according to claim 2, characterized in that: The cross section of the inner wall (1121) of the discharge port is set at an angle α with the central axis of the discharge assembly (11), and the angle α ranges from 20° to 80°.

8. The smoke extraction structure according to claim 6, characterized in that: The emission assembly cavity (114) is provided with a first constant diameter section (13) connected to the smoke inlet (111), a second constant diameter section (14) connected to the emission outlet (112), and a third constant diameter section (15) connecting the first constant diameter section (13) and the second constant diameter section (14) through a gradual transition section. The diameter of the third constant diameter section (15) is larger than the diameter of the first constant diameter section (13) and the second constant diameter section (14). The annular radial width S3 of the cross section of the emission zone (11232) is 1 / 6 to 1 / 4 of the diameter S4 of the second constant diameter section (14).

9. The smoke extraction structure according to claim 8, characterized in that: The emission assembly (11) is further provided with a drive assembly mounting part (115) connected to the emission assembly cavity (114). The central axis of the drive assembly mounting part (115) coincides with the central axis of the emission assembly cavity (114). The flow guide shell (161) is connected to the drive assembly mounting part (115) on the side closer to the emission port (112). The control assembly (16) further includes a protective shell (163) connected to the side of the flow guide shell (161) away from the flow guide part (1611). The control module (162) is installed between the flow guide shell (161) and the protective shell (163).

10. A desktop range hood, characterized in that: Including a smoke extraction component emission structure according to any one of claims 1-9.

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