Range hood

Abstract

The range hood comprises a box assembly and an air duct assembly, a smoke suction opening, a smoke suction cavity and a smoke purification cavity are formed in the box assembly, the smoke suction opening communicates with the smoke suction cavity, the smoke purification cavity communicates with the smoke suction cavity, the air duct assembly is installed in the smoke purification cavity, and the air duct assembly is at least installed on the side, in the length direction, of the smoke suction opening. The air duct assembly is arranged in the height direction of the box body assembly and comprises a shell, the shell is provided with an air inlet and a plurality of air outlets, the air inlet communicates with the smoke purifying cavity, an air guide cavity and a plurality of air outlet channels are defined in the shell, and the air guide cavity communicates with the air inlet; the air inlet end of the air outlet channel is communicated with the air guide cavity, and the air outlet end of the air outlet channel is correspondingly communicated with the air outlet; airflow enters the air guide cavity from the smoke purification cavity through the air inlet and then flows out through the multiple air outlet channels and the corresponding air outlets, so that an air curtain is formed on the side edge of the smoke suction opening; the possibility that oil smoke escapes to a kitchen space is greatly reduced, and the smoke gathering efficiency of the range hood is remarkably improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of range hoods, and more particularly to a range hood. Background Art

[0002] A smoke extraction port is provided on the front side of the range hood. In order to improve the smoke extraction effect of the range hood, there are many studies on arranging air curtain components on range hood products.

[0003] Among the currently available products, the air inlet of most air curtain assemblies is set at the top of the smoke chamber of the range hood, and the air outlet of the air curtain assembly is set at the top of the smoke outlet, forming a top-down air curtain at the smoke outlet. The air curtain cooperates with the movable panel to form a double barrier to the oil smoke, guiding the oil smoke into the smoke outlet.

[0004] However, the design of this top air curtain has limitations in actual use. Since the air curtain can only provide protection above the smoke outlet, it is difficult to effectively intercept the oil smoke spreading to both sides of the smoke outlet, causing some oil smoke to escape, affecting the overall exhaust efficiency of the range hood and the cleanliness of the kitchen environment.

[0005] In view of this, this application is filed. Summary of the Invention

[0006] An embodiment of the present application provides a range hood, which is provided with an air duct assembly on one side of the smoke outlet along the length direction. The air duct assembly is arranged along the height direction of the box assembly to form an air curtain from the edge to the center of the range hood along the length at the air outlet of the air duct assembly to prevent oil smoke from spreading to the side of the range hood.

[0007] In a first aspect, an embodiment of the present application provides a range hood, which includes a box assembly, the box assembly having a front side and a rear side relatively arranged, a smoke-inhalation port formed on the front side of the box assembly, a smoke-inhalation chamber and a clean smoke chamber defined inside the box assembly, the smoke-inhalation port being connected to the smoke-inhalation chamber, and the clean smoke chamber being connected to the smoke-inhalation chamber.

[0008] The range hood comprises an air duct assembly, which is installed in the smoke clean chamber. The air duct assembly is arranged at least on one side of the smoke intake port along the length direction, and is arranged along the height direction of the box assembly.

[0009] The air duct assembly includes a shell, which is provided with an air inlet and multiple air outlets. The air inlet is connected to the clean smoke chamber. An air guide cavity and multiple air outlet channels are defined in the shell. The air guide cavity is connected to the air inlet, the air inlet end of the air outlet channel is connected to the air guide cavity, and the air outlet end of the air outlet channel is connected to the air outlet accordingly.

[0010] The airflow enters the air guide cavity from the clean smoke cavity through the air inlet, and then flows out through multiple air outlet channels and corresponding air outlets to form an air curtain on the side of the smoking port. The air intake volume of the air outlet channel increases from the top to the bottom of the shell, so that the air curtain increases from top to bottom in the vertical direction of the air outlet channel.

[0011] In the above embodiment, by setting the air intake volume of different air outlet channels to produce different transmission distances at the air outlet, an air curtain is formed on the side of the smoke outlet. The air curtain increases from top to bottom in the vertical direction of the air outlet channel, which can better fit the rising path and diffusion range of the oil smoke, greatly reducing the possibility of the oil smoke escaping to the kitchen space, and significantly improving the smoke collection efficiency of the range hood.

[0012] In some embodiments, the shell includes a cover and a base, an air inlet is formed on the cover, the base is connected to the cover, an air guide cavity is formed between the base and the cover, and the cover and the base together form multiple air outlets on one side close to the front end of the box assembly.

[0013] The cover plate includes multiple first air guide parts, which are arranged on the end surface of the cover plate close to the base, and the multiple first air guide parts are arranged along the height direction of the cover plate. The base includes multiple second air guide parts, which are arranged on the end surface of the base close to the cover plate. The second air guide parts and the first air guide parts cooperate with each other, and the paired first air guide parts and the second air guide parts together constitute an air guide assembly, and adjacent air guide assemblies form an air outlet channel.

[0014] A straight-line distance between two adjacent first air guides close to the air inlet is defined as a first distance, and the first distance gradually increases from the top of the cover plate to the bottom of the cover plate.

[0015] In this embodiment, the air duct assembly consists of a cover plate and a base. The air inlet on the cover plate communicates with the smoke clean chamber. The base and cover plate are connected to form an air guide cavity, which is also connected to the air inlet. Near the front end of the box assembly, the cover plate and base together form multiple air outlets arranged along the height of the box assembly. This structural design achieves orderly guidance and distribution of airflow.

[0016] The airflow in the clean smoke chamber can smoothly enter the air guide chamber through the air inlet. In the air guide chamber, the airflow is further buffered and sorted, and then flows out through multiple air outlets, providing a stable airflow source for forming an air curtain on the side of the smoking port.

[0017] The straight-line distance between two adjacent first air guides near the air inlet is defined as the first distance, and this first distance gradually increases from the top to the bottom of the cover. This design has a critical impact on the shape and effectiveness of the air curtain. When air flows from the clean smoke chamber through the air inlet into the air guide chamber, then into the air outlet channel, and out through the air outlet, the gradual increase in the first distance causes the air curtain to gradually expand from top to bottom in the vertical direction of the air outlet channel.

[0018] The air curtain formed on the side of the exhaust vent better matches the rising path and diffusion range of oil smoke. As the smoke begins to rise, the bottom of the air curtain provides a timely initial interception. As the smoke continues to rise and spread, the gradually increasing area of the air curtain more fully covers the smoke, effectively blocking it near the exhaust vent, greatly reducing the possibility of smoke escaping into the kitchen space and significantly improving the range hood's smoke collection efficiency.

[0019] In some embodiments of the present application, the cover plate includes a cover plate body, a first air guide portion and a second air guide portion, an air inlet is formed on the cover plate body, the first air guide portion is connected to an end of the cover plate body close to the front side of the box assembly, the second air guide portion is connected to a side of the first air guide portion away from the cover plate body, and there is an angle between the first air guide portion and the second air guide portion, and the direction of the angle is toward the smoking port.

[0020] Under the action of the Coanda effect, after the airflow passes through the connection point of the first guide part and the second guide part, it will flow along the inner surface of the cover and finally be ejected, so that the air outlet direction is biased toward the cover, so as to form an air curtain towards the smoke outlet at the air outlet, preventing the oil smoke from spreading to the side.

[0021] In some embodiments of the present application, the base includes a base body and a third air guide portion, the base body is connected to the cover body, and an air guide cavity is formed between the base body and the cover body, the third air guide portion is connected to one end of the base body close to the front side of the box assembly, and the third air guide portion is inclined toward the second air guide portion in a direction from the side close to the base body to the side away from the base body.

[0022] By deflecting the base toward the cover plate near the air outlet, the air outlet direction is deflected toward the cover plate, so as to form an air curtain toward the cover plate and prevent the oil smoke from spreading to the side.

[0023] In some embodiments of the present application, the range hood includes a baffle and a first filter. The baffle is arranged between the smoke inhalation chamber and the clean smoke chamber. A smoke vent is provided on the baffle. The first filter is installed at the smoke vent. The first filter is used to filter the airflow entering the clean smoke chamber.

[0024] By setting up a first filter to filter the inhaled oil smoke and using the filtered airflow to form an air curtain, it can not only reduce the side diffusion of oil smoke, but also reduce the re-entry of inhaled oil smoke into the room.

[0025] In some embodiments of the present application, the air duct assembly includes a first fan, which is arranged on a side of the air guide cavity close to the air inlet, and the first fan is used to guide the airflow from the clean smoke cavity to the front side of the box assembly.

[0026] The air inlet serves as the connection between the clean smoke chamber and the wind guide chamber. Airflow here requires a strong and stable power source for efficient transmission. The first fan is positioned so that it can directly act on the airflow entering from the clean smoke chamber. By generating suction and thrust, it can quickly and powerfully guide the airflow into the wind guide chamber.

[0027] In some embodiments of the present application, the first guide portion is inclined from the rear side of the box assembly to the front side of the box assembly and to the top, and the second guide portion is inclined from the rear side of the box assembly to the front side of the box assembly and to the top.

[0028] By setting the inclined directions of the first air guide portion and the second air guide portion, the air flow can be discharged from the air outlet from an obliquely upward direction, so as to form an obliquely upward wind curtain on one side of the smoking port.

[0029] In some embodiments of the present application, the box assembly includes a first component, a second component and a second fan, a smoking port is formed on the front side of the first component, a smoking chamber is defined in the first component, a smoke exhaust chamber is defined in the second component, the smoke exhaust chamber and the smoking chamber are connected, a smoke outlet is formed on the top of the second component, the smoke outlet and the smoke exhaust chamber are connected, the second fan is arranged in the smoke exhaust chamber, and after the oil smoke passes through the smoking port, it passes through the smoking chamber and the smoke exhaust chamber in turn and is discharged from the smoke outlet.

[0030] The above-mentioned structure of a side-suction range hood is proposed to enrich the application scenarios of the technical solution in this application.

[0031] In some embodiments of the present application, the box assembly includes a first component and a second fan, the front side of the first component forms a smoking port, a smoking chamber is defined in the first component, a smoke outlet is formed on the top of the first component, and the smoking chamber, the smoke outlet and the smoking port are connected; the second fan is arranged in the smoking chamber, and the oil smoke passes through the smoking port and the smoking chamber and is discharged from the smoke outlet.

[0032] The above-mentioned structure of a side-suction range hood is proposed to enrich the application scenarios of the technical solution in this application.

[0033] In some embodiments of the present application, the range hood includes a movable panel and a drive assembly. The movable panel is arranged at the smoke outlet. The movable panel is used to open or close the smoke outlet. The drive assembly is connected to the movable panel. The drive assembly drives one end of the movable panel to rotate to open or close the smoke outlet.

[0034] The movable panel's opening and closing design optimizes airflow distribution near the inhalation port. When the panel is open, the inhalation port's open area increases, allowing fumes to flow more smoothly into the inhalation chamber, reducing the time fumes remain near the inhalation port.

[0035] On the second aspect, the embodiment of the present application also proposes a range hood, which includes a box assembly, the box assembly having a front side and a rear side arranged relatively to each other, a smoke-sucking port formed on the front side of the box assembly, a smoke-sucking chamber and a clean smoke chamber defined inside the box assembly, the smoke-sucking port is connected to the smoke-sucking chamber, and the clean smoke chamber is connected to the smoke-sucking chamber.

[0036] The range hood comprises a movable panel which is mounted on the smoke outlet and is used to open or close the smoke outlet.

[0037] The range hood comprises an air duct assembly, which is installed in the smoke clean chamber, arranged on one side of the smoke intake port along the length direction, and arranged along the height direction of the box assembly.

[0038] The air duct assembly includes a shell and multiple air guide assemblies. The shell is provided with an air inlet and multiple air outlets. The air inlet is connected to the clean smoke chamber. An air guide cavity is defined in the shell and connected to the air inlet. The multiple air guide assemblies are arranged in the shell. Adjacent air guide assemblies form an air outlet channel. The air inlet end of the air outlet channel is connected to the air guide cavity, and the air outlet end of the air outlet channel is connected to the air outlet.

[0039] When the movable panel opens the smoking port, the airflow passes through the air inlet from the clean smoke chamber into the air guide chamber, then enters the air inlet end of the air outlet channel and flows out from the air outlet, forming a triangular air curtain on the side of the smoking port, which is located below the movable panel.

[0040] In the above technical solution, the movable panel is installed at the smoking port, and its opening and closing states form a dynamic coordination with the air duct assembly.

[0041] When the movable panel is opened, the smoke outlet is fully exposed. Airflow from the duct assembly flows through the outlet channel, forming a triangular air curtain on the side of the smoke outlet. This air curtain, located below the movable panel, forms a three-dimensional smoke-collecting area with the smoke outlet. The air curtain blocks the spread of oil smoke from the side, while the space above the movable panel and the smoke outlet form a vertical suction field. This dual effect significantly improves oil smoke capture efficiency.

[0042] When the movable panel is closed, it can reduce the intrusion of dust when the equipment is idle. At the same time, it can form a local negative pressure at the smoke outlet with the help of residual airflow, further reducing the possibility of oil smoke escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the implementation methods in the embodiments of the present application or related technologies, the following is a brief introduction to the drawings required for use in the embodiments or related technology descriptions. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0044] Figure 1 This is a structural diagram of a range hood in an embodiment of the present application;

[0045] Figure 2 This is a structural schematic diagram of the range hood from another perspective in an embodiment of the present application;

[0046] Figure 3 for Figure 2 Cross-sectional view at the AA position;

[0047] Figure 4 This is a schematic diagram of the partial structure of the range hood in the embodiment of the present application;

[0048] Figure 5 This is a schematic structural diagram of the air duct assembly in an embodiment of the present application;

[0049] Figure 6 This is a structural schematic diagram of the air duct assembly from another perspective in an embodiment of the present application;

[0050] Figure 7 This is an exploded view of the air duct assembly in the embodiment of the present application;

[0051] Figure 8 This is a structural diagram of the base in an embodiment of the present application;

[0052] Figure 9 This is a schematic structural diagram of the cover plate in an embodiment of the present application;

[0053] Figure 10 This is a structural diagram of a range hood in another embodiment of the present application;

[0054] Figure 11 This is a schematic diagram of a partial structure of a range hood in another embodiment of the present application;

[0055] Figure 12 This is another partial structural diagram of a range hood in another embodiment of the present application;

[0056] Figure 13 This is a structural diagram of a range hood in another embodiment of the present application;

[0057] Figure 14 This is a schematic diagram of a partial structure of a range hood in another embodiment of the present application;

[0058] Figure 15This is another partial structural diagram of a range hood in another embodiment of the present application;

[0059] Figure 16 This is a structural diagram of a range hood in another embodiment of the present application;

[0060] Figure 17 This is a schematic diagram of a partial structure of a range hood in another embodiment of the present application;

[0061] Figure 18 This is another partial structural diagram of a range hood in another embodiment of the present application.

[0062] The reference numerals are as follows:

[0063] 1-range hood; 10-box assembly; 11-smoke outlet; 12-smoke chamber; 13-smoke clean chamber;

[0064] 20-air duct assembly; 21-cover plate; 211-first air guide portion; 212-cover plate body; 213-first air guide portion;

[0065] 214 - second guide portion; 111 - first oil screen; 112 - first inner plate; 113 - second inner plate;

[0066] 114 - cabinet adapter frame; 22 - base; 221 - second air guide; 222 - base body; 223 - third air guide;

[0067] 23-air inlet; 24-air outlet; 14-baffle; 15-first filter; 141-smoke vent; 25-first fan;

[0068] 251-front air inlet; 252-side air outlet;

[0069] 101-first component; 102-second component; 16-smoke outlet; 17-second fan; 18-movable panel;

[0070] 110-smoke exhaust chamber; 26-air outlet channel; 261-air inlet; 262-air outlet; 115-front panel;

[0071] 27-Air guide cavity. DETAILED DESCRIPTION

[0072] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0073] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0074] In addition, the terms "comprises" and "comprising" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0075] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0076] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0077] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0078] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0079] In the related art, the range hood includes an air curtain assembly, which can discharge an air curtain from top to bottom at the smoke outlet. The air curtain and the movable panel cooperate to form a double barrier to the oil smoke, guiding the oil smoke into the smoke outlet. However, the air curtain design has limitations. Since the air curtain can only form protection above the smoke outlet, it is difficult to effectively intercept the oil smoke spreading to both sides of the smoke outlet, causing some oil smoke to escape, affecting the overall smoke extraction efficiency of the range hood.

[0080] In order to solve the above problems, the air duct assembly of the range hood proposed in this application is arranged on both sides of the range hood, and by setting the shape of the air guide part in the air duct assembly, an air curtain is formed at the air outlet of the air duct assembly from the edge to the center along the length of the range hood, and the air curtain gradually increases from top to bottom along the vertical direction of the air outlet channel, which greatly reduces the possibility of oil smoke escaping into the kitchen space and significantly improves the smoke collection efficiency of the range hood.

[0081] Example 1

[0082] The range hood provided in the embodiments of the present application includes a housing assembly. The front side of the housing assembly is provided with a smoke outlet, through which oil smoke can enter the housing assembly to purify the kitchen space.

[0083] A smoking chamber is defined inside the box assembly. The smoking port is connected to the smoking chamber, and the smoking chamber is also connected to the smoke outlet. After the oil smoke enters the smoking chamber through the smoking port, it is discharged through the smoke outlet.

[0084] A clean smoke chamber is defined inside the box assembly, and the clean smoke chamber is communicated with the smoking chamber.

[0085] The box assembly includes a baffle, which is arranged between the smoke intake chamber and the smoke clean chamber. The baffle is used to separate the internal space of the box assembly and distinguish functional areas, which helps to expand the functions of the range hood.

[0086] In some embodiments, a smoke vent is provided on the baffle.

[0087] The box assembly includes a first filter screen, which is installed at the smoke outlet and is used to filter the airflow entering the clean smoke cavity.

[0088] By setting up a first filter to filter the inhaled oil smoke and using the filtered airflow to form an air curtain, it can not only reduce the side diffusion of oil smoke, but also reduce the re-entry of inhaled oil smoke into the room.

[0089] In some implementations of this embodiment, reference Figure 1 、 Figure 2 、 Figure 3 As shown, the range hood 1 includes a housing assembly 10. The housing assembly 10 includes a front side and a rear side that are oppositely disposed and a top side and a bottom side that are oppositely disposed.

[0090] It should be noted that Figure 1 The direction indicated by the arrow in the X direction is the front side, and the direction opposite to the arrow in the X direction is the rear side. The direction indicated by the arrow in the Y direction is the top side, and the direction opposite to the arrow in the Y direction is the bottom side. The Y direction is also the height direction of the range hood.

[0091] The box assembly 10 includes a first component 101. The first component 101 includes a shell, which forms the appearance of the first component 101.

[0092] The housing includes a front panel 115, which is configured as the front structure of the first component. The front panel 115 is tilted relative to the vertical plane. The tilted front panel 115 can help to bring the smoke outlet closer to the cooking area, shortening the rising path of the oil smoke.

[0093] The smoking opening 11 of the box assembly 10 is formed on the front panel 115. A smoking chamber 12 is defined in the first component 101. The smoking opening 11 and the smoking chamber 12 are in communication.

[0094] In some embodiments, the range hood 1 includes a movable panel 18, which is mounted at the smoke outlet 11. The smoke outlet 11 is opened or closed by moving the movable panel 18. In some embodiments, the movable panel 18 is made of glass.

[0095] In some embodiments, the range hood 1 includes a driving assembly, a driving end of which is connected to the movable panel 18 , and the driving assembly drives one end of the movable panel 18 to rotate to open or close the suction port 11 .

[0096] The housing assembly 10 includes a second component 102 . A smoke exhaust chamber 110 is defined within the second component 102 , and the smoke exhaust chamber 110 communicates with the smoking chamber 12 . A smoke outlet 16 is formed on the top of the second component 102 , and the smoke outlet 16 communicates with the smoke exhaust chamber 110 .

[0097] The box assembly 10 includes a second fan 25 , which is installed in the smoke exhaust chamber 110 to generate negative pressure to draw the oil smoke at the smoke outlet 11 into the smoke exhaust chamber 110 .

[0098] After passing through the smoking port 11, the oil smoke passes through the smoking chamber 12 and the exhaust chamber 110 in sequence and is discharged from the smoke outlet 16. Thus, the exhaust of indoor oil smoke is achieved.

[0099] Reference Figure 3 As shown, the second fan 25 includes a front air inlet 251 and a side air outlet 252 . The oil smoke enters from the front air inlet 251 and flows out from the side air outlet 252 , and is then discharged from the smoke outlet 16 .

[0100] Reference Figure 4 As shown, the box assembly 10 includes a box adapter frame 114 , which is disposed between the first component 101 and the second component 102 . The box adapter frame 114 and the second component 102 together form a smoke exhaust chamber 110 .

[0101] Reference Figure 1 As shown, the range hood 1 includes a first oil net 111. The first oil net 111 is arranged at the smoke inlet 11 and is used to filter the airflow entering the oil suction chamber 12. Figure 4 As shown, the baffle 14 is horizontally placed in the box assembly 10 to divide the interior of the box assembly into a smoking chamber and a smoke exhaust chamber. Specifically, the baffle 14 is horizontally placed in the first part 101.

[0102] The smoking chamber 12 is disposed below the smoke exhaust chamber 110 . A grille hole is provided at the center of the baffle 14 to direct the airflow in the smoking chamber 12 into the smoke exhaust chamber 110 .

[0103] The box assembly 10 includes a first inner plate 112 and a second inner plate 113. Figure 4 , the first inner plate 112 is arranged on Figure 4 On the left side, the second inner plate 113 is arranged Figure 4 The baffle 14, the first inner plate 112, the box adapter frame 114 and the shell together form a Figure 4 The clean smoke chamber 13 on the left side of the middle. The baffle 14, the second inner plate 113 and the shell together form a Figure 4 The clean smoke chamber 13 on the middle right side.

[0104] Reference Figure 4 As shown, smoke holes 141 are provided on both sides of the baffle 14 to filter the airflow in the smoking chamber 12 and then let it enter the clean smoke chamber 13 .

[0105] A first filter 15 is installed at the smoke outlet 141 , and the first filter 15 is used to filter the airflow entering the clean smoke chamber 15 .

[0106] The air flow path of the range hood 1 during range hood extraction in this application is as follows: the oil smoke enters the smoke chamber 12 through the first oil screen 111, passes through the grille holes, enters the smoke exhaust chamber 110, is sucked in by the second fan 25, blown out of the smoke outlet 16, and then discharged to the outside through the smoke exhaust pipe. The smoke exhaust pipe is used to connect the smoke outlet 16 and the outside.

[0107] In some embodiments, reference Figure 4 As shown, the range hood 1 includes an air duct assembly 20. The air duct assembly 20 is arranged in the clean smoke chamber 13. By installing the air duct assembly in the clean smoke chamber, the air duct assembly is not polluted by oil smoke, and has reliable performance and a long service life.

[0108] The air duct assembly 20 is used to form an air curtain at the side of the smoking port 11 to prevent the oil smoke from spreading to the side.

[0109] Reference Figure 4 As shown, the cover plate 21 of the air duct assembly 20 faces the inner plate, and the air duct assemblies 20 on the left and right sides are mirror-symmetrical about the central axis of the range hood 1. The internal air cavity formed by the air duct assemblies 20 on the left and right sides is also mirror-symmetrical about the central axis of the range hood 1.

[0110] The air flow trajectory of the air curtain generated by the air duct assembly 20 is as follows: after the oil smoke enters the smoking chamber 12 from the first oil net 111, it passes through the first filter 15 of the smoke outlet 141. A large amount of oil smoke is filtered out when passing through the first filter 15, and the remaining air enters the clean smoke chamber 13. It is sucked in by the air duct assemblies 20 on the left and right sides and blown out from the air outlet 24, forming a triangular air curtain between the front panel 115 and the movable panel 18 of the box assembly 10.

[0111] In this embodiment, the smoke outlet 11 is disposed on the upper portion of the front panel 115 of the range hood 1 , and the air outlet 24 of the air duct assembly 20 is disposed at a position corresponding to the smoke outlet 11 .

[0112] The air duct assembly 20 includes a shell, which is provided with an air inlet 23 and multiple air outlets 24. The air inlet 23 is connected to the clean smoke chamber 13. An air guide cavity 27 is defined in the shell and is connected to the air inlet 23.

[0113] The housing defines a plurality of air outlet channels 26, wherein the air inlet end 261 of the air outlet channel 26 communicates with the air guide cavity 27, and the air outlet end 262 of the air outlet channel 26 communicates with the air outlet 24. A single air outlet channel 26 is formed by two adjacent air guide components in the housing.

[0114] The airflow enters the air guide cavity 27 from the smoke clean cavity 13 through the air inlet 23 , and then flows out through the multiple air outlet channels 26 and the corresponding air outlets 24 to form an air curtain on the side of the smoking port 11 .

[0115] The air inlet volume of the air outlet passage increases from the top to the bottom of the housing, so that the air curtain increases from the top to the bottom in the vertical direction of the air outlet passage 26 .

[0116] In the above embodiment, by setting different air inlet volumes of the air outlet channels 26 to generate different transmission distances at the air outlet 24, an air curtain is formed on the side of the smoke outlet 11. The air curtain increases from top to bottom in the vertical direction of the air outlet channels 26, which can better fit the rising path and diffusion range of the oil smoke, greatly reducing the possibility of the oil smoke escaping into the kitchen space, and significantly improving the smoke collection efficiency of the range hood. In some embodiments, refer to Figure 5As shown, the housing includes a cover plate 21 . An air inlet 23 is formed on the cover plate 21 , and the air inlet 23 is communicated with the clean smoke chamber 13 .

[0117] Reference Figure 5 、 Figure 7 As shown, the housing includes a base 22. The base 22 is connected to the cover 21, and the base 22 and the cover 21 together form an air guide cavity 27. The air guide cavity 27 is connected to the air inlet 23.

[0118] The cover plate 21 and the base 22 together form a plurality of air outlets 24 on one side near the front end of the box assembly 10. The plurality of air outlets 24 are arranged along the height direction of the box assembly 10. By arranging the air outlets 24 along the height direction, a vertical air curtain is formed on the side of the smoking port 11.

[0119] Reference Figure 9 As shown, the cover plate 21 includes a plurality of first air guide portions 211 . The first air guide portions 211 are arranged on an end surface of the cover plate 21 close to the base 22 . The plurality of first air guide portions 211 are arranged along a height direction of the cover plate 21 .

[0120] Reference Figure 8 The base 22 includes a plurality of second air guides 221 , and the second air guides 221 are arranged on the end surface of the base 22 close to the cover plate 21 .

[0121] The second air guide portion 221 cooperates with the first air guide portion 211 , and the paired first air guide portion 211 and the second air guide portion 221 together constitute an air guide assembly. Adjacent air guide assemblies form an air outlet channel 26 , and the air outlet channel is connected to the air guide cavity.

[0122] It should be noted that the paired first air guide portion 211 and second air guide portion 221 refer to the first air guide portion 211 and the second air guide portion 221 that can be connected after the cover plate 21 and the base 22 are installed.

[0123] Reference Figure 8 、 Figure 9 Each air outlet duct 2 has a separate air inlet end 261 and an air outlet end 262, and the air outlet direction and the air guide portion of the air outlet position are consistent. The air outlet end 262 of the air outlet duct is the air outlet.

[0124] In this embodiment, a straight-line distance between two adjacent first air guides 211 close to the air inlet 23 is defined as a first distance, and the first distance gradually increases from the top of the cover plate 21 to the bottom of the cover plate 21 .

[0125] The airflow enters the air guide cavity 27 from the clean smoke cavity 13 through the air inlet 23, and then enters the air outlet channel 26 and flows out from the air outlet to form an air curtain on the side of the smoking port 11. The air curtain gradually increases from top to bottom in the vertical direction of the air outlet channel 26.

[0126] A vertical distance between two adjacent second air guides 221 on one side close to the air inlet 23 is a first distance H, and the first distance gradually increases from the top of the base 22 to the bottom of the base 22 .

[0127] Reference Figure 8 、 Figure 9 As shown, the closer the air inlet end 261 of the air outlet channel 26 is to the top of the cover plate 21 or the base 22, the smaller it is, the smaller the air volume passing through the air outlet channel 26 is, and the shorter the distance the airflow flowing out of the air outlet channel 26 is transmitted, so as to form a triangular wind curtain at the air outlet 24.

[0128] When the airflow flows from the clean smoke chamber 13 through the air inlet 23 into the air guide chamber 27, and then enters the air outlet channel 26 and flows out from the air outlet 24, due to the gradual increase of the first distance, the air curtain gradually increases from top to bottom in the direction perpendicular to the air outlet channel 26.

[0129] The air curtain formed on the side of the smoke outlet 11 can better fit the rising path and diffusion range of the oil smoke. When the oil smoke is just generated and begins to rise, the bottom of the air curtain can be preliminarily intercepted in time.

[0130] As the oil smoke continues to rise and spread, the top of the air curtain and the movable panel 18 work together to more comprehensively cover the oil smoke, effectively blocking it near the smoke outlet 11, greatly reducing the possibility of oil smoke escaping into the kitchen space, and significantly improving the smoke collection efficiency of the range hood.

[0131] During operation of the range hood 1, most of the oil smoke is directly sucked into the smoke chamber 13 through the smoke outlet 11, and a small amount of oil smoke is blocked by the air curtain and then sucked into the smoke chamber 13, thereby reducing the oil smoke that spreads into the kitchen space.

[0132] In some embodiments, when the movable panel 18 opens the smoking port 11, the air flow enters the air guide chamber 27 from the clean smoke chamber 13 through the air inlet 23, and then enters the air inlet end 261 of the air outlet channel 26 and flows out from the air outlet 24, forming a triangular wind curtain on the side of the smoking port 11, and the wind curtain is located below the movable panel 18.

[0133] In the above embodiment, the air duct assembly 20 is configured as a flat structure as a whole and is installed in the smoke inlet chamber 13 , without occupying the flow channel space in the smoking chamber 12 and without affecting the smoking resistance.

[0134] In some implementations of this embodiment, the air duct components 20 are arranged in pairs, and the air duct components 20 are arranged on both sides of the smoke outlet 11 along the length direction to form air curtains on both sides of the smoke outlet 11 to reduce the escape of oil smoke.

[0135] In some implementations of this embodiment, reference Figure 6 、 Figure 7 As shown, the cover plate 21 includes a cover plate body 212. An opening is provided on the cover plate body 212 at a position corresponding to the first fan 25, and the opening is an air inlet 23 for air intake.

[0136] In some embodiments, the cover plate 21 includes a first air guide portion 213 . The first air guide portion 213 is connected to an end of the cover plate body 212 close to the front side of the box assembly 10 .

[0137] In some embodiments, the cover plate 21 includes a second guide portion 214. The second guide portion 214 is connected to a side of the first guide portion 213 away from the cover plate body 212. Figure 6 As shown, there is an included angle between the first air guide portion 213 and the second air guide portion 214 , and the direction of the included angle is toward the smoking port.

[0138] Under the action of the Coanda effect, after the airflow passes through the connection point of the first guide part 213 and the second guide part 214, it will flow along the inner surface of the cover plate 21 and finally be ejected, so that the air outlet direction is biased toward the cover plate 21, so as to form an air curtain towards the smoke outlet 11 at the air outlet 24, preventing the oil smoke from spreading to the side.

[0139] It should be noted that the Coanda effect is that when a fluid jet is ejected from a nozzle and approaches a curved or convex surface, the jet will deviate from its original straight path and flow along the surface.

[0140] In some embodiments, a plurality of screw holes are provided on the cover plate 21 , and a plurality of screw seats are provided inside the base 22 , and the cover plate 21 and the base 22 are connected and fixed by screws.

[0141] In some embodiments, the cover body 212 , the first air guide portion 213 , the second air guide portion 214 and the first air guide portion 213 are integrally formed, which reduces the number of manufacturing steps and reduces the cost.

[0142] In some embodiments of the present application, reference is made to Figure 6 As shown, the base 22 includes a base body 222 and a third air guide portion 223. The base body 222 is connected to the cover body 212, and an air guide cavity 27 is formed between the base body 222 and the cover body 212. The third air guide portion 223 is connected to one end of the base body 222 close to the front side of the box assembly 10. The third air guide portion 223 is inclined toward the second air guide portion 214 in the direction from the side close to the base body 222 to the side away from the base body 222.

[0143] By deflecting the base 22 toward the side close to the cover plate 21 near the air outlet 24, the air outlet direction is deflected toward the cover plate 21, so as to form an air curtain toward the cover plate and prevent the oil smoke from spreading to the side.

[0144] In some embodiments of the present application, the air duct assembly 20 includes a first fan 25, which is arranged on a side of the air guide cavity 27 close to the air inlet 23, and the first fan 25 is used to guide the airflow from the clean smoke cavity 13 to the front side of the box assembly 10.

[0145] In some embodiments, the first fan 25 is fixed to the base 22 via a threaded connection.

[0146] The air inlet 23 serves as a connection between the clean smoke chamber 13 and the wind guide chamber 27. Airflow here requires a strong and stable power source for efficient transmission. The first fan 25 is positioned so that it can directly act on the airflow entering from the clean smoke chamber 13, drawing the airflow into the wind guide chamber 27 through the suction and thrust generated by its own operation.

[0147] In some embodiments of the present application, reference is made to Figure 8 、 Figure 9 As shown, the first air guide portion 211 is tilted from the rear side of the box assembly 10 to the front side of the box assembly 10 and to the top, and the second air guide portion 221 is tilted from the rear side of the box assembly 10 to the front side of the box assembly 10 and to the top.

[0148] By setting the inclined direction of the first guide portion 211 and the second guide portion 221 , the air flow can be discharged from the air outlet end 262 of the air outlet channel 26 from obliquely upward, so as to form an oblique upward wind curtain on one side of the smoking port 11 .

[0149] Example 2

[0150] The difference between the technical solution in this embodiment and the technical solution in embodiment 1 lies in the structure of the housing assembly of the range hood. Figure 10 、 Figure 11 、 Figure 12 As shown, the box assembly 10 includes a first component 101. A smoking port 11 is formed on the front side of the first component 101. A smoking chamber 12 is defined in the first component 101. A smoke outlet 16 is formed on the top of the first component 101. The smoking chamber 12 is connected to the smoke outlet 16 and the smoking port 11.

[0151] The box assembly 10 includes a second fan 17 , which is disposed in the smoking chamber 12 . The oil smoke passes through the smoking port 11 and then the smoking chamber 12 and is discharged from the smoke outlet 16 .

[0152] The above-mentioned structure of a side-suction range hood is proposed to enrich the application scenarios of the technical solution in this application.

[0153] In this embodiment, two baffles 14 are provided. The two baffles 14 are respectively provided on both sides along the length direction of the first component 101 to form a smoke clean chamber 13 on both sides inside the box assembly 10 .

[0154] Reference Figure 12 As shown, the air curtain generated by the air duct assembly 20 is triangular in shape, and the movable panel 18 and the air curtain form an air guide space at the smoke outlet 11 so that the oil smoke is sucked into the smoke outlet 11 .

[0155] Reference Figure 11 As shown, the air curtain generated by the air duct assembly 20 on the left is tilted to the right as a whole, that is, tilted toward the inner side of the range hood 1, and the air curtain of the air duct assembly 20 on the right is tilted to the left as a whole, that is, tilted toward the inner side of the range hood 1.

[0156] When the range hood 1 is working, most of the oil smoke is directly sucked into the smoke chamber 12 . When a small amount of oil smoke on both sides escapes outward, it is blocked by the air curtain and then sucked into the smoke chamber 12 .

[0157] Example 3

[0158] The difference between the technical solution in this embodiment and the technical solution in embodiment 1 lies in the location of the smoking port.

[0159] In this embodiment, referring to Figure 13 、 Figure 14 、 Figure 15 As shown, the smoke outlet 11 is arranged at the lower half of the front panel 115 of the range hood 1 , and the arrangement position of the air outlet 24 of the air duct assembly 20 corresponds to the position of the smoke outlet 11 .

[0160] Reference Figure 14 As shown, the oil smoke enters the smoking chamber 12 from the smoking port 11, and then passes through the first filter 15 into the clean smoke chamber 13. The airflow flows downward along one side of the clean smoke chamber 13, flows out from the air outlet under the action of the first fan 25, and forms an air curtain on the front side of the range hood 1.

[0161] Example 4

[0162] The difference between the technical solution in this embodiment and the technical solution in embodiment 2 lies in the location of the smoking port.

[0163] In this embodiment, referring to Figure 16 、 Figure 17 、 Figure 18 As shown, the smoke outlet 11 is arranged at the lower half of the front panel 115 of the range hood 1 , and the arrangement position of the air outlet 24 of the air duct assembly 20 corresponds to the position of the smoke outlet 11 .

[0164] Reference Figure 17As shown, the oil smoke enters the smoking chamber 12 from the smoking port 11, and then passes through the first filter 15 into the clean smoke chamber 13. The airflow flows downward along one side of the clean smoke chamber 13, flows out from the air outlet under the action of the first fan 25, and forms an air curtain on the front side of the range hood 1.

[0165] The present application provides a range hood 1, which includes a box assembly 10 and an air duct assembly 20. The box assembly 10 is formed with a smoke inlet 11, a smoke inlet chamber 12 and a clean smoke chamber 13. The smoke inlet 11 is connected to the smoke inlet chamber 12, and the clean smoke chamber 13 is connected to the smoke inlet chamber 12. The air duct assembly 20 is installed in the clean smoke chamber 13. The air duct assembly 20 is installed on at least one side of the smoke inlet 11 along the length direction. The air duct assembly 20 is arranged along the height direction of the box assembly 10. The air duct assembly 20 includes a cover plate 21 and a base 22 that together form an air guide chamber 27. The cover plate 21 is provided with a There are multiple first air guide parts 211, and multiple second air guide parts 221 are provided on the base 22. The first air guide parts 211 and the second air guide parts 221 are arranged in cooperation to form an air outlet channel 26. The air outlet end 262 of the air outlet channel 26 is the air outlet 24 of the air duct assembly 20. The air outlet 24 is arranged along the height direction of the box assembly 10. The first distance gradually increases from the top of the cover plate 21 to the bottom of the cover plate 21 to form a wind curtain of a set shape on one side of the smoking port 11, which greatly reduces the possibility of oil smoke escaping to the kitchen space and significantly improves the smoke collection efficiency of the range hood.

[0166] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0167] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A range hood, characterized in that: include: A box assembly, the box assembly having a front side and a rear side arranged opposite to each other, a smoking port formed on the front side of the box assembly, a smoking chamber and a smoke-free chamber defined inside the box assembly, the smoking port being in communication with the smoking chamber, and the smoke-free chamber being in communication with the smoking chamber; An air duct assembly is provided in the smoke-free chamber, the air duct assembly is provided on one side of the smoke-inhaling port along the length direction, and the air duct assembly is provided along the height direction of the box assembly; the air duct assembly includes: The shell is provided with an air inlet and a plurality of air outlets, the air inlet is connected to the clean smoke chamber, an air guide cavity is defined in the shell, and the air guide cavity is connected to the air inlet; a plurality of air outlet channels are further defined inside the shell, the air inlet ends of the air outlet channels are connected to the air guide cavity, and the air outlet ends of the air outlet channels are connected to the air outlets accordingly; The airflow enters the air guide cavity from the smoke clean cavity through the air inlet, and then flows out through the plurality of air outlet channels and the corresponding air outlets to form an air curtain on the side of the smoking port; The air inlet volume of the air outlet channel increases from the top to the bottom of the shell, so that the air curtain increases from the top to the bottom in the vertical direction of the air outlet channel.

2. The range hood according to claim 1, characterized in that: The housing comprises: a cover plate, wherein the air inlet is formed on the cover plate; A base, the base is connected to the cover plate, the base and the cover plate enclose the air guide cavity; the cover plate and the base together enclose a plurality of air outlets on a side close to the front end of the box assembly; The cover plate comprises: A plurality of first air guide portions are provided on an end surface of the cover plate close to the base; the plurality of first air guide portions are provided along a height direction of the cover plate; The base comprises: a plurality of second air guide portions, provided on an end surface of the base close to the cover plate, the second air guide portions cooperating with the first air guide portions, pairs of the first air guide portions and the second air guide portions together forming an air guide assembly, and adjacent air guide assemblies forming the air outlet channel; A straight-line distance between two adjacent first air guides on one side close to the air inlet is defined as a first distance, and the first distance increases from the top of the cover plate to the bottom of the cover plate.

3. The range hood according to claim 2, characterized in that: The cover plate comprises: a cover plate body, on which the air inlet is formed; a first air guide portion connected to one end of the cover body close to the front side of the box assembly; The second air guide portion is connected to the first air guide portion at a side away from the cover plate body. An angle is formed between the first air guide portion and the second air guide portion, and the angle is directed toward the smoking port.

4. The range hood according to claim 3, characterized in that: The base comprises: A base body, the base body is connected to the cover body, and the air guide cavity is formed between the base body and the cover body; The third air guide portion is connected to one end of the base body close to the front side of the box assembly. The third air guide portion is inclined toward the second air guide portion in a direction from a side close to the base body to a side away from the base body.

5. The range hood according to any one of claims 1 to 4, characterized in that: include: a baffle, disposed between the smoking chamber and the clean smoke chamber, the baffle being provided with a smoke outlet; The first filter is arranged at the smoke outlet, and is used for filtering the airflow entering the smoke clean chamber.

6. The range hood according to any one of claims 1 to 4, characterized in that: The air duct assembly includes: The first fan is arranged on a side of the air guide cavity close to the air inlet, and is used to guide the airflow from the clean smoke cavity to the front side of the box assembly.

7. The range hood according to any one of claims 2 to 4, characterized in that: The first air guide portion is arranged obliquely from the rear side of the box assembly to the front side of the box assembly toward the top; The second air guide portion is arranged to be inclined from the rear side of the box assembly to the front side of the box assembly and to the top.

8. The range hood according to any one of claims 1 to 4, characterized in that: The box assembly includes: a first component, wherein the front side of the first component forms the smoking port, the smoking cavity is defined in the first component, a smoke outlet is formed on the top of the first component, and the smoking cavity is connected to the smoke outlet and the smoking port; The second fan is arranged in the smoking chamber, and the oil smoke passes through the smoking port and then is discharged from the smoke outlet.

9. The range hood according to any one of claims 1 to 4, characterized in that: The box assembly includes: a first component, wherein the front side of the first component forms the smoking port, and the smoking cavity is defined in the first component; a second component, wherein a smoke exhaust cavity is defined in the second component and is communicated with the smoking cavity; a smoke outlet is formed on the top of the second component and is communicated with the smoke exhaust cavity; The second fan is arranged in the smoke exhaust chamber. After the oil smoke passes through the smoke outlet, the smoke chamber and the smoke exhaust chamber, it is discharged from the smoke outlet.

10. A range hood, characterized in that: include: A box assembly, the box assembly having a front side and a rear side arranged opposite to each other, a smoking port formed on the front side of the box assembly, a smoking chamber and a smoke-free chamber defined inside the box assembly, the smoking port being in communication with the smoking chamber, and the smoke-free chamber being in communication with the smoking chamber; A movable panel, provided at the smoking opening, for opening or closing the smoking opening; An air duct assembly is provided in the smoke-free chamber, the air duct assembly is provided on one side of the smoke-inhaling port along the length direction, and the air duct assembly is provided along the height direction of the box assembly; the air duct assembly includes: The shell is provided with an air inlet and a plurality of air outlets, the air inlet is communicated with the smoke clean chamber, and an air guide cavity is defined in the shell and communicated with the air inlet; A plurality of air guide components are provided in the housing, and adjacent air guide components form an air outlet channel, wherein the air inlet end of the air outlet channel is connected to the air guide cavity, and the air outlet end of the air outlet channel is correspondingly connected to the air outlet; When the movable panel opens the smoking port, the airflow enters the air guide chamber from the clean smoke chamber through the air inlet, then enters the air inlet ends of the air outlet channels respectively and flows out from the corresponding air outlets, forming a triangular wind curtain on the side of the smoking port, and the wind curtain is located below the movable panel.

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