Smoke gathering cover and range hood

Abstract

The utility model relates to the technical field of range hoods, and discloses a smoke gathering hood which comprises a top shell, a rear plate and side plates. The top shell is parallel to the horizontal plane; the rear plate is perpendicular to the top shell and located below the top shell, and the upper side edge of the rear plate is connected with the rear side edge of the top shell. The number of the side plates is two, and the two side plates are arranged at the two included angles formed by the top shell and the rear plate correspondingly to block the two included angles formed by the top shell and the rear plate. The top shell, the rear plate and the two side plates jointly define a smoke gathering area. According to the range hood, escape and leakage of lampblack can be reduced, the lampblack gathering effect is improved, interference between the lampblack gathering hood and a cooking user is reduced, and the user experience is improved. The utility model further discloses the range hood.

Description

Technical Field

[0001] This application relates to the field of range hood technology, and in particular to a smoke collection hood and a range hood. Background Technology

[0002] Currently, cooking in kitchens easily produces fumes, which are often vented outdoors by range hoods. Range hoods typically have a fume hood at the bottom as an inlet for the fumes; the fan draws in the fumes from the stove or cookware below. However, current range hoods suffer from insufficient fume extraction, allowing fumes to escape and leak out of the fume hood.

[0003] Among the related technologies, there is a composite fume purification and interception unit that intercepts and purifies oil fumes. The unit includes a main cabinet and a fume collection hood fixed to the bottom of the main cabinet. Vertical cavities extending vertically are provided on both sides of the fume collection hood. A connecting cavity is provided between the inner top of the vertical cavity and the top surface of the fume collection hood, connecting the top of the inner cavity of the vertical cavity and the top of the inner cavity of the fume collection hood. The side-suction box includes a vertical shell that slides within the inner cavity of the vertical cavity and a wedge-shaped bottom shell fixedly connected to the bottom end of the vertical shell. A smoke exhaust port is provided on the top of the inner wall of the vertical shell. The inner wall of the wedge-shaped bottom shell is inclined, and the inclined surface has several strip-shaped smoke inlets.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] While the side-suction box design can increase the range of smoke extraction, the smoke can still easily escape and leak from the rear, resulting in poor smoke collection. Furthermore, the side-suction box can easily interfere with the user's cooking experience.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides a fume hood and range hood to reduce the escape and leakage of cooking fumes, improve the fume collection effect, and reduce interference between the fume hood and the user during cooking, thereby improving the user experience.

[0009] In some embodiments, the smoke hood includes a top shell, a rear plate, and side plates. The top shell is parallel to a horizontal plane; the rear plate is perpendicular to the top shell and located below the top shell, with its upper side edge connected to the rear side edge of the top shell; two side plates are provided, each positioned at one of the two included angles formed by the top shell and the rear plate, sealing off the two included angles; wherein the top shell, the rear plate, and the two side plates together enclose the smoke-collecting area.

[0010] Optionally, the lower side of the rear panel is provided with a flange, which protrudes forward along the lower side of the rear panel. The plane where the flange is located is parallel to the horizontal plane, and the lower side of the side panel is connected to the upper side wall of the flange.

[0011] Optionally, a convex shell is provided on the inner side of the smoke collection area, and the rear sidewall of the convex shell is attached to and connected to the front sidewall of the rear plate. The convex shell divides the smoke collection area into a first area and a second area.

[0012] Optionally, the lower sidewall of the top shell is provided with two top suction ports, which are respectively located on the lower sidewall of the top shell corresponding to the first region and the second region. The two opposite sidewalls of the convex shell are provided with side suction ports, one of which is located on the sidewall of the convex shell facing the first region and the other is located on the sidewall of the convex shell facing the second region.

[0013] Optionally, both side suction ports extend from bottom to top along the sidewall of the convex shell.

[0014] Optionally, an airflow cavity is formed inside the convex shell, and the flow area of ​​the airflow cavity gradually decreases from top to bottom along the vertical direction.

[0015] Optionally, the two sidewalls of the convex shell with the side suction port are inclined toward the inside of the convex shell, and the inclination angle is greater than 0° and less than or equal to 30°.

[0016] Optionally, the flow area of ​​the side suction port is greater than twice the flow area of ​​the top suction port, and less than or equal to three times the flow area of ​​the top suction port.

[0017] Optionally, the front edge of the side panel is inclined to the rearward in the vertical direction, and the inclination angle of the front edge of the side panel is greater than or equal to 15° and less than or equal to 30°.

[0018] In some embodiments, a range hood includes: a smoke collection hood according to any of the above embodiments.

[0019] The smoke hood and range hood provided in this disclosure can achieve the following technical effects:

[0020] By using a fume hood composed of a top shell, a rear panel, and side panels, the rear panel blocks the rear area, and the other side panel blocks the angled area formed by the top shell and the rear panel, thus enclosing the fume-collecting area. This reduces the escape and leakage of cooking fumes and improves the fume collection effect. Furthermore, the rear panel's location at the back and the side panels blocking the angle between the top shell and the rear panel minimize interference between the fume hood and the user during cooking, improving the user experience.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a smoke hood provided in an embodiment of this disclosure;

[0024] Figure 2 This is a schematic diagram showing the location of the side suction port provided in an embodiment of this disclosure;

[0025] Figure 3 This is a schematic diagram showing the inclination of the front side edge of the side plate provided in an embodiment of this disclosure;

[0026] Figure 4 This is a schematic diagram showing the inclination of the two side walls of the convex shell provided in an embodiment of this disclosure;

[0027] Figure 5 This is a cross-sectional schematic diagram of the smoke hood provided in an embodiment of this disclosure;

[0028] Figure 6 This is a schematic diagram of another smoke hood provided in an embodiment of this disclosure;

[0029] Figure 7 This is a cross-sectional schematic diagram of another smoke hood provided in an embodiment of this disclosure.

[0030] Figure label:

[0031] 100. Top shell; 110. Top suction port; 120. Connecting cavity; 200. Rear plate; 210. Flanged edge; 300. Side plate; 400. Smoke collection area; 410. First area; 420. Second area; 500. Convex shell; 510. Side suction port; 520. Airflow cavity; 600. Negative pressure shell; 610. Negative pressure cavity; 620. Smoke exhaust port; 630. Fan. Detailed Implementation

[0032] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0033] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0035] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0036] Unless otherwise stated, the term "multiple" means two or more.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0038] Combination Figure 1-7As shown, in some embodiments, the smoke hood includes: a top shell 100, a rear plate 200, and side plates 300. The top shell 100 is arranged parallel to the horizontal plane; the rear plate 200 is arranged perpendicular to the top shell 100 and located below the top shell 100, with its upper side edge connected to the rear side edge of the top shell 100; two side plates 300 are provided, and the two side plates 300 are respectively arranged at the two included angles formed by the top shell 100 and the rear plate 200, sealing the two included angles formed by the top shell 100 and the rear plate 200; wherein, the top shell 100, the rear plate 200, and the two side plates 300 together enclose the smoke collection area 400.

[0039] The fume hood provided in this embodiment, consisting of a top shell 100, a rear plate 200, and side plates 300, uses the rear plate 200 to block the rear area and the side plates 300 to block the angle formed by the top shell 100 and the rear plate 200, thus enclosing a fume-collecting area 400. This reduces the escape and leakage of cooking fumes and improves the fume collection effect. Furthermore, the rear plate 200 being located at the rear, and the side plates 300 blocking the angle between the top shell 100 and the rear plate 200, reduces interference between the fume hood and the user during cooking, improving the user experience.

[0040] Understandably, when the smoke hood is installed, the side of the top shell 100 facing the user is the front side, and the side of the top shell 100 facing away from the user is the rear side.

[0041] Specifically, the top shell 100 and the rear panel 200 are both rectangular plate structures, while the side panel 300 is a right-angled trapezoidal plate structure. The two sides of the side panel 300 corresponding to the right angles are connected to the lower side of the top shell 100 and the front side of the rear panel 200, respectively. The longer side of the side panel 300 is located at the top, and the shorter side is located at the bottom. In this way, the rectangular plate structure of the top shell 100 and the rear panel 200 are connected, enclosing a triangular smoke-collecting area 400 inside them. The right-angled trapezoidal plate structure of the side panel 300 can better fit into the angled area between the top shell 100 and the rear panel 200, effectively sealing it off. Moreover, the front side of the right-angled trapezoidal plate structure of the side panel 300 has an inclined angle, which can provide space for cooking operations and reduce the risk of interference between the user and the side panel 300 during cooking.

[0042] For example, cooking can be carried out within the smoke collection area 400. The cookware is located below the smoke collection area 400. Under the action of the top suction port 110 and the side suction port 510, a negative pressure is generated in the smoke collection area 400. The oil fumes generated when cooking are diffused into the smoke collection area 400 under the action of the negative pressure and are sucked in by the side suction port 510 and the top suction port 110.

[0043] Optionally, the lower side of the rear panel 200 is provided with a flange 210, which protrudes forward along the lower side of the rear panel 200. The plane containing the flange 210 is parallel to the horizontal plane, and the lower side of the side panel 300 is connected to the upper side wall of the flange 210. In this way, the flange 210 can provide support for the lower side of the side panel 300, making the overall structure of the smoke hood more stable.

[0044] Optionally, the upper side wall of the flange 210 is provided with an oil collection groove. In this way, the oil on the inner side wall of the fume hood can flow along its inner wall into the oil collection groove of the flange 210, and the oil can be collected by the oil collection groove.

[0045] like Figure 3 As shown, optionally, the front edge of the side panel 300 is inclined backward in the vertical direction, with an inclination angle greater than or equal to 15° and less than or equal to 30°. When the inclination angle of the front edge of the side panel 300 is less than 15°, the angle is too small, resulting in the side panel 300 not completely blocking the angle between the top shell 100 and the rear panel 200, leading to poor smoke collection. When the inclination angle of the front edge of the side panel 300 is greater than 30°, the angle is too large, making it easy for the front edge of the side panel 300 to interfere with the user during cooking, causing inconvenience. Therefore, setting the inclination angle of the front edge of the side panel 300 to be greater than or equal to 15° and less than or equal to 30° can both effectively block the angle between the top shell 100 and the rear panel 200, ensuring smoke collection, and reduce the risk of the front edge of the side panel 300 interfering with the user during cooking.

[0046] Specifically, the inclination angle of the front side of the side panel 300 is 30°. In this way, with the inclination angle of the front side of the side panel 300 being 30°, the side panel 300 can effectively block the angle between the top shell 100 and the rear panel 200, ensuring smoke collection and reducing the risk of interference between the front side of the side panel 300 and the user during cooking.

[0047] Optionally, a convex shell 500 is provided on the inner side of the smoke collection area 400. The rear sidewall of the convex shell 500 is attached to and connected to the front sidewall of the rear plate 200. The convex shell 500 divides the smoke collection area 400 into a first area 410 and a second area 420. In this way, by providing the convex shell 500 in the smoke collection area 400, the smoke collection area 400 is divided into a first area 410 and a second area 420, so that the smoke hood has two smoke collection areas 400, that is, two cooking operation areas, which can simultaneously collect cooking fumes.

[0048] Optionally, the upper bottom surface of the convex shell 500 is attached to and connected to the upper inner wall of the top shell 100, and the lower bottom surface of the convex shell 500 is attached to and connected to the upper side wall of the flange 210. In this way, the convex shell 500 is limited by the cooperation of the top shell 100 and the flange 210, thereby improving the installation stability of the convex shell 500.

[0049] Optionally, the lower sidewall of the top shell 100 is provided with two top suction ports 110, which are respectively located on the lower sidewall of the top shell 100 corresponding to the first region 410 and the second region 420. The two opposite sidewalls of the convex shell 500 are each provided with a side suction port 510, one of which is located on the sidewall of the convex shell 500 facing the first region 410, and the other is located on the sidewall of the convex shell 500 facing the second region 420. Thus, both the first region 410 and the second region 420 are provided with top suction ports 110 and side suction ports 510, enabling both regions to have fume extraction capabilities. Positioning the two side suction ports 510 of the first region 410 and the second region 420 on opposite sidewalls of the convex shell 500 improves the fume extraction effect. Furthermore, when the first zone 410 and the second zone 420 are simultaneously absorbing fumes, the negative pressure generated by the side suction ports 510 of the first zone 410 and the second zone 420 can influence each other, further reducing the risk of fumes escaping and improving the fume extraction effect.

[0050] For example, when the side suction ports 510 provided in the first region 410 and the second region 420 are simultaneously sucking up oil fumes, the oil fumes escaping from the first region 410 toward the second region 420 can be sucked up by the side suction ports 510 of the second region 420, and the oil fumes escaping from the second region 420 toward the first region 410 can be sucked up by the side suction ports 510 of the first region 410.

[0051] Regarding the selection test of the side suction port 510's location, in some experimental examples, when side suction ports 510 were opened on both the inner and outer sides of the smoke collection area 400 of the fume hood, when the inner and outer side suction ports 510 were opened simultaneously, the rising fumes gradually dispersed under the negative pressure of the side suction ports 510. When the outer side suction port 510 and the top suction port 110 were opened simultaneously, the fumes generated by the left and right cookware deviated from the outer side of the cookware, which is contrary to the goal of gathering the fumes. When the inner side suction port 510 and the top suction port 110 were opened simultaneously, the fumes generated by the left and right cookware gathered towards the center of the fume hood. Most of the fumes were drawn in through the inner side suction port 510 before they diffused, and a small amount of diffused fumes were drawn in through the top suction port 110. Therefore, it can be concluded that placing the side suction port 510 on the side wall adjacent to the first area 410 and the second area 420 provides the best fume extraction effect.

[0052] Optionally, both side suction ports 510 extend from bottom to top along the side wall of the convex shell 500. In this way, since the fumes rise under the action of the top suction port 110 and the side suction ports 510, extending the side suction ports 510 from bottom to top along the side wall of the convex shell 500 can draw in the rising fumes, thus improving the fume extraction effect.

[0053] Optionally, the convex shell 500 is shaped like a quadrangular prism, with the area of ​​its upper base being larger than the area of ​​its lower base. This quadrangular prism structure allows the convex shell 500 to better divide the smoke-collecting area 400 into a first region 410 and a second region 420. Inverting the convex shell 500 creates regions that gradually narrow from bottom to top, allowing the fumes in the first region 410 and the second region 420 to be gradually gathered and drawn into the top suction port 110, thus improving the smoke-collecting effect.

[0054] Optionally, the inclination angle of the front sidewall of the convex shell 500 is the same as the inclination angle of the front side of the side plate 300. In this way, the inclination angle of the front sidewall of the convex shell 500 matches the inclination angle of the side plate 300, avoiding the front sidewall of the convex shell 500 from protruding into the smoke-collecting area 400, and reducing the risk of interference between the user and the convex shell 500 during cooking.

[0055] Optionally, the forward and backward tilt angle of the side suction port 510 is the same as the tilt angle of the front sidewall of the convex shell 500. In this case, when the side suction port 510 is vertically positioned, its radiation range is relatively small, resulting in poor smoke extraction. If the forward and backward tilt angle of the side suction port 510 is greater than the tilt angle of the front sidewall of the convex shell 500, the area of ​​the side suction port 510 at the same height is larger, leading to increased airflow and noise. Therefore, setting the forward and backward tilt angle of the side suction port 510 to be the same as the tilt angle of the front sidewall of the convex shell 500 ensures both the radiation range and height of the side suction port 510 while reducing its area. This increases the inlet air velocity within a limited airflow, thus maintaining the smoke extraction effect of the fume hood while reducing the airflow volume.

[0056] Optionally, the rear sidewall of the convex shell 500 is perpendicular to the two bottom surfaces. This allows the rear sidewall of the convex shell 500 to match the angle with the rear plate 200, and the rear sidewall of the convex shell 500 to be more stably attached to the rear plate 200.

[0057] Optionally, an airflow cavity 520 is formed inside the convex shell 500, and the flow area of ​​the airflow cavity 520 gradually decreases from top to bottom along the vertical direction. Thus, since the side suction port 510 extends from top to bottom along the side wall of the convex shell 500, and the area where oil fumes are generated is located below, the flow area of ​​the airflow cavity 520 formed inside the convex shell 500 gradually decreases from top to bottom. The negative pressure distribution in the airflow cavity 520 gradually increases from top to bottom, and the suction force of the area near the lower part of the side suction port 510 is greater than the suction force of the area near the upper part of the side suction port 510. That is, the closer the side suction port 510 is to the area where oil fumes are generated, the stronger the suction force, further improving the oil fume extraction effect.

[0058] Optionally, the inner side of the top shell 100 is provided with a connecting cavity 120, which is connected to the airflow cavity 520, and the top suction port 110 is connected to the connecting cavity 120. In this way, the oil fumes drawn in by the side suction port 510 flow into the connecting cavity 120 through the airflow cavity 520, and the oil fumes drawn in by the top suction port 110 directly enter the connecting cavity 120 and are then discharged through the connecting cavity 120.

[0059] like Figure 4 As shown, optionally, the two sidewalls of the convex shell 500 with side suction ports 510 are inclined inwards towards the interior of the convex shell 500, with an inclination angle greater than 0° and less than or equal to 30°. When the inclination angle of the two sidewalls of the convex shell 500 with side suction ports 510 towards the interior of the convex shell 500 is greater than 30°, the inclination angle of the two sidewalls of the convex shell 500 is too large, occupying too much space in the first area 410 and the second area 420, affecting the smoke collection effect, and easily interfering with the user's cooking operations. Moreover, the inclination angle of the side suction ports 510 provided on the two sidewalls of the convex shell 500 is also too large. With the same height, the area of ​​the side suction ports 510 will be larger, resulting in increased airflow and noise from the side suction ports 510, thus affecting the smoke extraction effect. Therefore, the inclination angle of the two side walls of the convex shell 500 is set to be greater than 0° and less than or equal to 30°. This allows the two side walls of the convex shell 500 to guide and gather cooking fumes while avoiding excessive space occupation and reducing the risk of interference between the convex shell 500 and the user's cooking operations. At the same time, while ensuring the height of the side suction port 510, the area of ​​the side suction port 510 is reduced. This increases the inlet air velocity within a limited air volume, thereby ensuring the fume extraction effect of the fume hood while reducing air volume and wind noise.

[0060] Optionally, the two side walls of the side suction port 510 of the convex shell 500 are inclined at an angle of 10° towards the interior of the convex shell 500. This allows the two side walls of the convex shell 500 to form an inclined angle to guide and gather cooking fumes, while also preventing the convex shell 500 from occupying too much space and reducing the risk of interference between the convex shell 500 and the user's cooking operations. Simultaneously, while maintaining the height of the side suction port 510, the area of ​​the side suction port 510 is reduced, thereby increasing the inlet air velocity within a limited air volume.

[0061] Specifically, the planes containing both side intake ports 510 are inclined inwards towards the interior of the convex shell 500, and the inclination angle of the planes containing both side intake ports 510 is greater than 0° and less than or equal to 30°. Thus, since the two side intake ports 510 are respectively located on the two side walls of the convex shell 500, the inclination angle of the planes containing both side intake ports 510 is greater than 0° and less than or equal to 30°. While maintaining the height of the side intake ports 510, the area of ​​the side intake ports 510 is reduced, thereby increasing the inlet air velocity within a limited airflow.

[0062] Specifically, the planes containing the two side suction ports 510 are tilted at an angle of 10°.

[0063] Specifically, both side suction ports 510 are tilted in one direction.

[0064] Understandably, the first region 410 and the second region 420 are located on the left and right sides of the convex shell 500, respectively. Therefore, the two side suction ports 510 are respectively set on the left and right side walls of the convex shell 500.

[0065] Optionally, the flow area of ​​the side suction port 510 is greater than twice the flow area of ​​the top suction port 110, but less than or equal to three times the flow area of ​​the top suction port 110. This way, since the generated fumes diffuse from bottom to top, and the area where the fumes are generated is also located at the bottom, setting the flow area of ​​the side suction port 510 to be greater than twice the flow area of ​​the top suction port 110 ensures the effective fume extraction of the side suction port 510. However, an excessively large flow area of ​​the side suction port 510 would result in a large airflow and generate wind noise; therefore, the flow area of ​​the side suction port 510 is set to be less than or equal to three times the flow area of ​​the top suction port 110.

[0066] Optionally, the flow area of ​​the side suction port 510 is three times that of the top suction port 110. This allows the side suction port 510 to effectively radiate the area where oil fumes are generated and rise, ensuring effective fume extraction while providing strong suction with relatively low airflow and reducing wind noise.

[0067] Optionally, the top suction port 110 and the side suction port 510 have the same width, and the length of the side suction port 510 is three times the length of the top suction port 110. In this way, the flow area of ​​the side suction port 510 is equal to three times the flow area of ​​the top suction port 110, and the radiation range of the side suction port 510 is larger, thereby improving the fume extraction effect.

[0068] Optionally, in the vertical direction, the distance between the lower end of the side suction port 510 and the lower end of the fume hood is less than or equal to one-twentieth of the length of the side suction port 510, and the distance between the upper end of the side suction port 510 and the plane containing the top suction port 110 is less than or equal to one-fifteenth of the length of the side suction port 510. Thus, when the distance between the lower end of the side suction port 510 and the lower end of the fume hood is greater than one-twentieth of the length of the side suction port 510, the larger distance between them leads to a decrease in the radiation range of the side suction port 510, resulting in a poorer fume extraction effect. Similarly, when the distance between the upper end of the side suction port 510 and the plane containing the top suction port 110 is greater than one-fifteenth of the length of the side suction port 510, the larger distance between them also leads to a decrease in the radiation range of the side suction port 510, resulting in a poorer fume extraction effect. Therefore, the distance between the lower end of the side suction port 510 and the lower end of the smoke hood is set to be less than or equal to one-twentieth of the length of the side suction port 510, and the distance between the upper end of the side suction port 510 and the plane where the top suction port 110 is located is set to be less than or equal to one-fifteenth of the length of the side suction port 510. This ensures the radiation range of the side suction port 510 and the effectiveness of smoke extraction.

[0069] Understandably, the distance between the lower end of the side suction port 510 and the lower end of the smoke hood refers to the distance between the lower end of the side suction port 510 and the lower side edge of the rear plate 200 in the vertical direction; the distance between the upper end of the side suction port 510 and the plane where the top suction port 110 is located refers to the distance between the upper end of the side suction port 510 and the lower side wall of the top shell 100 in the vertical direction.

[0070] Optionally, the distance between the lower end of the side suction port 510 and the lower end of the fume hood is equal to one-twentieth of the length of the side suction port 510, and the distance between the upper end of the side suction port 510 and the plane containing the top suction port 110 is equal to one-fifteenth of the length of the side suction port 510. In this way, since the top suction port 110 is located above the side suction port 510, the oil fumes rising along the side suction port 510 can ultimately be drawn in by the top suction port 110. Since there is no suction port below the side suction port 510, the distance between the lower end of the side suction port 510 and the lower end of the fume hood is set closer, further improving the oil fume extraction effect.

[0071] Combination Figure 6 and Figure 7As shown, in one embodiment, the smoke hood further includes a negative pressure shell 600. The negative pressure shell 600 is disposed on the upper end of the smoke hood, and the inner wall of the negative pressure shell 600 and the upper side wall of the smoke hood together enclose a negative pressure cavity 610, which communicates with the top suction port 110 and the side suction port 510. In this way, by utilizing the cooperation between the negative pressure shell 600 and the smoke hood to enclose the negative pressure cavity 610, a negative pressure is generated in the negative pressure cavity 610, causing the top suction port 110 and the side suction port 510 to draw in oil fumes.

[0072] Specifically, the top suction port 110 is connected to the negative pressure chamber 610, and the side suction port 510 is connected to the negative pressure chamber 610 through the airflow chamber 520. In this way, the oil fumes drawn in by the top suction port 110 flow directly into the negative pressure chamber 610, and the oil fumes drawn in by the side suction port 510 flow into the negative pressure chamber 610 through the airflow chamber 520.

[0073] Optionally, the upper side wall of the negative pressure shell 600 is provided with a smoke exhaust port 620, and the negative pressure chamber 610 is connected to the smoke exhaust port 620. In this way, the oil fumes drawn into the negative pressure chamber 610 are discharged along the smoke exhaust port 620.

[0074] Optionally, a fan 630 is installed inside the negative pressure chamber 610, and the air inlet of the fan 630 is connected to the top suction port 110 and the side suction port 510. In this way, the operation of the fan 630 generates negative pressure, so that both the top suction port 110 and the side suction port 510 can draw in oil fumes.

[0075] Optionally, the fan 630 is a centrifugal fan. The air inlet of the fan 630 is connected to the negative pressure chamber 610 and the airflow chamber 520, and the air outlet of the fan 630 is connected to the smoke exhaust port 620. In this way, the centrifugal fan generates a strong negative pressure when it is running, so that negative pressure is generated in both the negative pressure chamber 610 and the airflow chamber 520, and the oil fumes are drawn in through the top suction port 110 and the side suction port 510.

[0076] In some embodiments, a range hood includes: a smoke collection hood according to any of the above embodiments.

[0077] The range hood provided in this embodiment of the present disclosure, by setting up a smoke-collecting hood composed of a top shell 100, a rear panel 200, and a side panel 300, uses the rear panel 200 to block the rear area, and the other side panel 300 to block the angle area formed by the two ends of the top shell 100 and the rear panel 200, together enclosing the smoke-collecting area 400, can reduce the escape and leakage of oil fumes and improve the smoke-collecting effect. Moreover, since the rear panel 200 is located at the rear, and the side panel 300 blocks the angle between the top shell 100 and the rear panel 200, it can reduce the interference between the smoke-collecting hood and the user during cooking, and improve the user experience.

[0078] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A smoke gathering hood, characterized by, The application relates to a smoke gathering cover, which comprises a top cover (100) arranged in parallel to a horizontal plane; a back plate (200) arranged perpendicularly to the top cover (100) and below the top cover (100), and an upper side edge of the back plate (200) is connected with a rear side edge of the top cover (100); and two side plates (300) arranged at two included angles formed by the top cover (100) and the back plate (200) respectively, and the two side plates (300) seal the two included angles formed by the top cover (100) and the back plate (200).

2. The smoke gathering cover according to claim 1, wherein a lower side edge of the back plate (200) is provided with a flange (210) protruding forward along the lower side edge of the back plate (200), and a plane where the flange (210) is located is parallel to the horizontal plane, and a lower side edge of the side plate (300) is connected with an upper side wall of the flange (210).

3. The smoke gathering cover according to claim 1, wherein the two side inlets (510) are both extended from bottom to top along the side walls of the convex shell (500).

4. The smoke gathering cover according to claim 3, wherein an airflow cavity (520) is formed inside the convex shell (500), and in a vertical direction, a flow area of the airflow cavity (520) gradually decreases from top to bottom.

5. The smoke gathering cover according to claim 1, wherein the two side walls of the convex shell (500) where the side inlets (510) are arranged are both inclined towards the inside of the convex shell (500), and an inclination angle is greater than 0° and less than or equal to 30°.

6. The smoke gathering cover according to claim 1, wherein a flow area of the side inlet (510) is greater than twice of a flow area of the top inlet (110) and less than or equal to three times of the flow area of the top inlet (110).

7. The smoke gathering cover according to any one of claims 1 to 6, wherein a front side edge of the side plate (300) is inclined rearward in a vertical direction, and an inclination angle of the front side edge of the side plate (300) is greater than or equal to 15° and less than or equal to 30°. The application further relates to a smoke gathering cover comprising the smoke gathering cover according to any one of claims 1 to 7. ​ ​ ​ ​ ​ ​ ​ ​ ​ 8. A range hood characterized by, ​ ​

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