A fume hood and a range hood

Abstract

The application provides a smoke hood, comprising: a smoke hood body, a bottom of which is provided with an air inlet; a flow guide plate, which is arranged directly below the air inlet and is spaced from the air inlet, a rear end of the flow guide plate being connected to the smoke hood body through a hinge assembly; and an oil cup, which is arranged directly below the rear end of the flow guide plate, a top of the oil cup being mounted on the bottom of one end of the hinge assembly connected to the smoke hood body. By mounting the oil cup on the hinge assembly, on one hand, the oil cup and the flow guide plate can not interfere with each other during installation, and the installation process is simplified, and on the other hand, the distance between the top of the oil cup and the smoke hood body can be increased, so that oil fume can be sucked from the gap between the oil cup and the smoke hood body, the air inlet area of the negative pressure area is increased, and the smoke suction effect of the range hood is improved. The application also provides a range hood provided with the smoke hood.

Description

Technical Field

[0001] This invention belongs to the field of kitchen appliance technology, specifically relating to a smoke collection hood and a range hood equipped with the smoke collection hood. Background Technology

[0002] The cooking process in traditional Chinese cuisine includes frying, stir-frying, deep-frying, and roasting, which generates a lot of oil fumes. These fumes not only seriously pollute the kitchen environment, but also pose a significant health risk to kitchen workers who are exposed to them for extended periods, potentially leading to cancer. Therefore, range hoods are widely used in kitchens.

[0003] Range hoods typically have a baffle plate and an oil cup installed on their smoke collection hood. The oil cup is elongated and has its opening facing upwards. It is mounted at the bottom rear end of the smoke collection hood body via an assembly and is used to collect oil droplets generated during the operation of the range hood. The baffle plate is located in the middle of the bottom of the smoke collection hood body. Its rear end is mounted on the smoke collection hood body via a hinge assembly, extending directly above the opening of the oil cup. The front end of the baffle plate is connected to the bottom of the smoke collection hood body via a bracket. Smoke is drawn in from the left, right, and front sides of the baffle plate, which increases the negative pressure zone and improves the smoke extraction effect. At the same time, the baffle plate can catch oil droplets dripping from inside the range hood and guide them into the oil cup at the rear for collection.

[0004] However, the existing fume hoods have oil cups and baffles mounted on the hood body using separate mounting components, making the installation process complex and prone to interference between the mounting structures. Furthermore, fumes can only be drawn in from the left, right, and front sides of the baffle, but not from the rear, limiting the air intake area of ​​the negative pressure zone.

[0005] Therefore, designing a smoke hood that can simplify the installation process of the oil cup and the baffle plate, prevent mutual interference during installation, and increase the air intake area of ​​the negative pressure zone has become a technical problem that urgently needs to be solved by those skilled in the art.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a smoke collection hood. By installing the oil cup at the bottom of the hinge assembly, the installation process of the oil cup and the guide plate can be simplified. At the same time, the air intake area of ​​the negative pressure zone is increased, which solves the problems of complicated installation process of oil guide plate and oil cup and poor smoke extraction effect of existing range hoods.

[0008] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0009] A smoke hood, comprising:

[0010] The smoke hood body has an air inlet at the bottom;

[0011] The deflector is located directly below the air inlet, spaced apart from the air inlet, and its rear end is connected to the smoke hood body via a hinge assembly.

[0012] The oil cup is located directly below the rear end of the baffle, with its top mounted at the bottom of the end where the hinge assembly connects to the smoke hood body.

[0013] Furthermore, the hinge assembly includes:

[0014] The hinge seat is located at the bottom rear end of the smoke hood body. The top is used to connect with the smoke hood body, the front side of the middle part is provided with a bushing, and the bottom is used to connect with the oil cup.

[0015] The hinge body has a rotating shaft at the rear end that is adapted to the bushing, and a connecting part at the front end that is connected to the guide plate.

[0016] Furthermore, it also includes:

[0017] The slot extends rearward from the front end of the hinge seat, and its left and / or right sides communicate with the outside.

[0018] The lugs bend and extend from the top of the left and right side walls of the oil cup toward the middle of the oil cup, and are installed in the slot along the extension direction of the slot.

[0019] Furthermore, an elastic arm is provided on the upper and / or lower side of the slot wall, and a bent part protruding into the slot is provided in the middle of the elastic arm. The hanging ear is clamped between the bent part and the slot wall on the opposite side of the elastic arm.

[0020] The extension direction of the flexible arm is the same as the extension direction of the card slot.

[0021] Furthermore, the edge of the deflector is provided with a baffle that extends circumferentially and bends upward along the edge of the deflector;

[0022] The connecting part bends downward from the front end of the hinge body. The bottom of the connecting part is provided with a slot that matches the folded edge at the rear end of the guide plate. The baffle is inserted into the slot and fixed in the slot by a second connector that vertically penetrates the connecting part and the baffle.

[0023] Furthermore, the center of the deflector is provided with an upwardly recessed molding, the molding including:

[0024] The planar portion is located at the front center of the deflector.

[0025] The side portion extends downwards at an angle from the periphery of the planar portion;

[0026] The smoke inlet is located on the flat surface and is a strip extending in the front and back direction.

[0027] Furthermore, the width of the planar portion gradually decreases from front to back;

[0028] The smoking port includes two that are parallel to the left and right edges of the flat part, respectively, and the edges of the smoking port are provided with upward-turned flanges.

[0029] Furthermore, the middle of the planar portion is provided with an upwardly recessed strip groove. The left and right walls of the strip groove are set as inclined surfaces that are parallel to the left and right edges of the planar portion and slope downward from the inside out. The two smoke inlets are respectively opened on the left and right walls of the strip groove.

[0030] Furthermore, an oil screen is installed at the air inlet, with multiple grille holes on the oil screen, and a shielding part corresponding to the flat part is provided in the middle of the oil screen.

[0031] The shape of the shielding part is the same as that of the planar part; the grille holes are opened on the left and right sides of the shielding part, and the grille holes opened on the left and right sides of the shielding part are parallel to the left and right edges of the shielding part, respectively.

[0032] The present invention also discloses a range hood equipped with the above-mentioned smoke collection hood, including a main box installed above the smoke collection hood, and further comprising:

[0033] The mounting beam is located at the rear end of the main box and is connected to the load-bearing part through a third connector.

[0034] The limiting part bends upward from the rear end of the hinge assembly and is sandwiched between the smoke hood and the load-bearing part. Its rear end face is coplanar with the rear end face of the mounting beam.

[0035] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0036] 1. In this invention, the oil cup is mounted on the bottom of the hinge assembly via the lugs at its left and right ends. On the one hand, this avoids interference between the oil cup and the baffle plate during installation, simplifying the installation process. On the other hand, it increases the distance between the top of the oil cup and the fume hood body, allowing fumes to be drawn in through the gap between the oil cup and the fume hood body, increasing the air intake area of ​​the negative pressure zone and improving the fume extraction effect of the range hood.

[0037] 2. By setting an elastic arm on the groove wall of the slot, the present invention can improve the installation strength of the oil cup, and can prevent the oil cup from falling off during the use of the range hood while ensuring the convenience of oil cup disassembly and assembly, thereby improving the user experience.

[0038] 3. This invention, by setting an upwardly concave profile on the baffle plate, creates a significant velocity gradient and negative pressure gradient between the concave area and the surrounding air inlet channel. This effectively accommodates, gathers, and reorganizes the flow path of the flue gas, thus preventing the diffusion of cooking fumes. Furthermore, by setting an elongated smoke inlet on the flat portion of the profile, the smoke extraction effect of the range hood is further improved.

[0039] 4. By setting the smoke inlet parallel to the grid holes on the oil screen, the present invention allows the oil fumes drawn in from the smoke inlet to flow directly into the grid holes, preventing the airflow of oil fumes drawn into the range hood from becoming turbulent and improving the smoke extraction effect of the range hood.

[0040] 5. By setting an installation beam and a limiting part at the rear end of the range hood, the present invention can create a certain gap between the range hood and the supporting part, which facilitates the intake of oil fumes from the rear side of the guide plate, increases the air intake area of ​​the negative pressure zone, and improves the smoke extraction effect.

[0041] At the same time, the present invention has a simple structure, significant effects, and is suitable for widespread use.

[0042] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0043] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0044] Figure 1 This is a schematic diagram of the overall structure of the range hood in an embodiment of the present invention;

[0045] Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged structural diagram at point A;

[0046] Figure 3 This is a schematic diagram of the rear structure of the range hood in an embodiment of the present invention;

[0047] Figure 4 This is an exploded view of the range hood in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram of the installation structure of the guide plate and oil cup in an embodiment of the present invention;

[0049] Figure 6 This is an embodiment of the present invention. Figure 5 Enlarged structural diagram at point B;

[0050] Figure 7 This is a schematic diagram of the hinge seat in an embodiment of the present invention;

[0051] Figure 8 This is a cross-sectional view of the hinge seat in an embodiment of the present invention;

[0052] Figure 9 This is a cross-sectional view of the hinge body in an embodiment of the present invention;

[0053] Figure 10 This is a cross-sectional view of the snap-fit ​​assembly in an embodiment of the present invention;

[0054] Figure 11 This is a schematic diagram of the structure of the oil mesh in an embodiment of the present invention.

[0055] Description of main components in the diagram:

[0056] 1. Smoke hood body; 101. Smoke collection chamber; 2. Main box; 3. Guide plate; 301. Molded; 3011. Flat part; 3012. Side part; 302. Smoke inlet; 303. Strip groove; 304. Edge retainer; 4. Oil cup; 401. Hanging ear; 4011. Protrusion; 5. Hinge assembly; 501. Hinge seat; 5011. Bushing; 5012. Slot; 5013. Limiter Position; 5014, elastic arm; 5015, hollow opening; 502, hinge body; 5021, pivot; 5022, connecting part; 5023, limiting protrusion; 6, mounting beam; 7, oil mesh; 701, grid hole; 8, snap fastener assembly; 801, snap fastener body; 8011, locking hole; 8012, spring; 8013, plug; 802, pawl; 8021, head; 8022, neck.

[0057] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0059] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0060] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] Example 1

[0062] like Figures 1 to 11 As shown in the embodiment of the present invention, a range hood is introduced, including a smoke collection hood and a main box 2 installed above the smoke collection hood. The smoke collection hood is provided with a smoke collection chamber 101, and the main box 2 is provided with an air duct that communicates with the smoke collection chamber 101.

[0063] The smoke hood includes a smoke hood body 1, which includes a top plate, a surrounding plate, and a bottom plate. The surrounding plate is arranged circumferentially along the top plate and extends vertically downward from the periphery of the top plate. All sides of the top of the surrounding plate are on the same plane, and the shape of the top plate matches the shape of the top of the surrounding plate; the top plate is fastened to the top of the surrounding plate. All sides of the bottom of the surrounding plate are on the same plane, and the shape of the bottom plate matches the shape of the bottom of the surrounding plate; the bottom plate is fastened to the bottom of the surrounding plate.

[0064] The bottom of the smoke hood is provided with an air inlet. Preferably, the bottom plate of the smoke hood body 1 has an upwardly recessed smoke collection cavity 101. The peripheral wall of the smoke collection cavity 101 is inclined from bottom to top towards the center. The air inlet is located at the top of the smoke collection cavity 101, and the smoke collection cavity 101 is connected to the air duct in the main box 2 through the air inlet. In this embodiment, the main box 2 is installed at the rear of the top of the smoke hood. The rear end face of the main box 2 is flush with the rear end face of the smoke hood. The angle between the front side wall of the smoke collection cavity 101 and the horizontal plane is smaller than the angle between the rear side wall of the smoke hood and the horizontal plane. The length of the front side wall of the smoke hood is greater than the length of the rear side wall of the smoke hood.

[0065] In this embodiment, a guide plate 3 is provided at the bottom of the smoke collection hood body 1. The guide plate 3 corresponds to the air inlet and is spaced apart from the air inlet. The width of the guide plate 3 is greater than the width of the air inlet but less than the width of the bottom of the smoke collection chamber 101. That is, the guide plate 3 can completely cover the air inlet, preventing oil droplets from the inside of the range hood from falling onto the stove. At the same time, there is a gap between the periphery of the guide plate 3 and the inner wall of the smoke collection chamber 101. During the operation of the range hood, the oil fumes are drawn in through the gap between the periphery of the guide plate 3 and the smoke collection chamber 101, improving the suction power of the range hood for oil fumes and effectively preventing oil fumes from escaping.

[0066] like Figure 4 and Figure 5 As shown in this embodiment, in order to better improve the oil fume extraction effect, a pressing 301 is provided on the guide plate 3 to form a concave structure on the guide plate 3, so that two concave cavities, one upper and one lower, are formed on the smoke collection hood.

[0067] Specifically, the molding 301 is disposed in the middle of the guide plate 3 and is formed by an upward indentation. The molding 301 includes a planar portion 3011 disposed at the front end of the middle of the guide plate 3, and side portions 3012 extending downwardly from the left, right, and rear edges of the planar portion 3011. The side portions 3012 are disposed around the planar portion 3011 and form a certain angle with the planar portion 3011, thereby forming a concave structure for the guide plate 3. The front end of the side portion 3012 is flush with the front end of the planar portion 3011 and extends to the front end of the guide plate 3. The front end of the guide plate 3 is a zigzag shape with a high middle and low ends. The planar portion 3011 and the side portion 3012 are smoothly connected, and the side portion 3012 is smoothly connected to the left, right, and rear sides of the guide plate 3 of the molding 301.

[0068] In this embodiment, because the guide plate 3 has a concave shape with a high center and low sides, the pressure distribution on the lower side and edge of the range hood can be improved and reconstructed. Compared with traditional flat or convex arc-shaped pressure-diffusing and smoke-controlling plates, the oil fumes are drawn in from the periphery of the guide plate 3, which can increase the airflow velocity of the range hood. At the same time, it will also expand the negative pressure to the edge of the guide plate 3, expanding the effective area for removing oil fumes. After the oil fume rises and contacts the edge of the concave guide plate 3, it will quickly rise upwards. At the same time, the concave guide plate 3 and the inner surface of the upper smoke collection chamber 101 form a negative pressure channel, and the fumes flow inward along this channel to the air inlet. In the concave structure and area in the middle of the guide plate 3, the concave structure creates a large velocity gradient and negative pressure gradient between the concave area and the surrounding air intake channel, which plays a significant role in accommodating, gathering, and reorganizing the flue gas flow path. When the amount of oil fume is large, the oil fume that is not absorbed immediately will be slowed down and gathered in this area. At the same time, due to the wall adhesion, it flows to the opposite side and is drawn into the air duct along the edge of the opposite side. Compared with the planar diffuser and smoke control plate without this concave structure, the existence of this concave area greatly improves the problem of oil fume diffusion.

[0069] like Figure 5As shown in this embodiment, the guide plate 3 is also provided with a smoke inlet 302. Specifically, the smoke inlet 302 is provided on the flat portion 3011 of the molded form 301, and is a strip extending in the front and rear directions. By providing the smoke inlet 302, the molded form 301 on the guide plate 3 can also play the role of collecting oil fumes. The oil fumes collected in the concave molded form 301 are sucked in through the smoke inlet 302, further improving the smoke extraction effect of the range hood.

[0070] like Figure 4 and Figure 11 As shown, in this embodiment, an oil mesh 7 is provided at the air inlet, and the oil mesh 7 has a plurality of grille holes 701 for the flow of oil fumes. The grille holes 701 are elongated strips extending forward and backward. Preferably, to prevent oil droplets inside the range hood from dripping from the smoke inlet 302 on the guide plate 3, in this embodiment, a shielding part corresponding to the flat portion 3011 of the pressed 301 is provided on the oil mesh 7. The shape of the shielding part is the same as the shape of the flat portion 3011, and the grille holes 701 are opened on the left and right sides of the shielding part.

[0071] like Figure 1 , Figure 5 and Figure 6 As shown in this embodiment, the guide plate 3 is inclined downwards from front to back. A baffle 304 extending circumferentially and bending upwards along the edge of the guide plate 3 is provided. An oil drain port is provided at the rear end of the guide plate 3, near the baffle 304, and the oil drain port is connected to the oil cup 4 at the rear end of the guide plate 3. During operation, fumes are drawn in through the gap between the periphery of the guide plate 3 and the smoke collection chamber 101, and through the smoke extraction clip on the guide plate 3. Oil droplets dripping from inside the range hood are collected by the guide plate 3 and can flow along the guide plate 3 to the rear, flowing into the oil cup 4 through the oil drain port at the rear baffle 304.

[0072] Preferably, in this embodiment, the smoke inlet 302 includes two that are parallel to the left and right edges of the planar portion 3011, respectively, and the edge of the smoke inlet 302 is provided with an upward-turned flange to prevent oil stains from flowing down from the smoke inlet 302.

[0073] In this embodiment, the planar portion 3011 has an upwardly recessed strip groove 303 in the middle. The left and right walls of the strip groove 303 are respectively set as inclined surfaces that are parallel to the left and right edges of the planar portion 3011 and slope downward from the inside out. Two smoke inlets 302 are respectively opened on the left and right walls of the strip groove 303. With the above arrangement, the airflow drawn in from the smoke inlet 302 can flow to the left and right sides, so that the airflow drawn in from the smoke inlet 302 can converge with the airflow drawn in from the periphery of the guide plate 3. The converged airflow directly enters the air inlet through the grille holes 701 on the left and right sides of the shield, preventing the airflow from impacting the shield and causing turbulence, thereby improving the smoke extraction effect of the range hood.

[0074] Preferably, in this embodiment, the planar portion 3011 of the molding 301 is configured as a trapezoid with a width that gradually decreases from front to back, which can improve the gathering effect of the guide plate 3 on the oil fumes, and at the same time, improve the strength of the smoke guide plate.

[0075] Preferably, in this embodiment, the strip groove 303 is configured as a trapezoid with its left and right groove walls parallel to the left and right edges of the planar portion 3011. The smoke inlets 302 are respectively opened on the left and right groove walls of the strip groove 303, and are parallel to the left and right edges of the planar portion 3011. The shielding portion is configured as a trapezoid with the same shape as the planar portion 3011, and the grille holes 701 on the left and right sides of the shielding portion are parallel to the left and right edges of the shielding portion. Through the above configuration, the setting direction of the grille holes 701 is more adapted to the airflow direction, preventing airflow turbulence. At the same time, more grille holes 701 can be set on the rear side of the oil mesh 7, making the air intake area at the front end of the oil mesh 7 smaller than the air intake area at the rear end of the oil mesh 7. This adapts the air intake area of ​​the grille holes 701 to the structure where the gap between the outer edge of the guide plate 3 and the inner wall of the smoke collection chamber 101 gradually increases from front to back, which can further improve the smoke extraction effect of the range hood.

[0076] Example 2

[0077] like Figures 1 to 10 As shown, in this embodiment, the rear part of the guide plate 3 is hinged to the smoke hood, while the front part is engaged with the smoke hood.

[0078] In this embodiment, the rear end of the guide plate 3 is hinged to the smoke hood body 1 via the hinge assembly 5.

[0079] Specifically, the hinge assembly 5 includes a hinge base 501 and a hinge body 502. There are two hinge bases 501, which are respectively installed at the left and right ends of the bottom rear end of the smoke collection hood body 1 via a first connecting member. The first connecting member can be a bolt, screw, or clip. A bushing 5011 is provided at the front end of the hinge base 501, and the bushing 5011 extends into the smoke collection chamber 101. The hinge body 502 is plate-shaped and consists of two that correspond one-to-one with the hinge bases 501. The rear end of the hinge body 502 is provided with a pivot 5021 that matches the bushing 5011, and the front end of the hinge body 502 is provided with a connecting part 5022 that connects to the guide plate 3.

[0080] Preferably, the hinge body 502 bends downward from back to front, or the hinge body 502 is set as an arc shape that gradually bends downward from back to front. The front end of the hinge body 502 is connected to the baffle 304 at the rear end of the guide plate 3 through the connecting part 5022, so as to prevent the guide plate 3 and the rear part from interfering with the smoke hood body 1 and / or oil cup 4 when the guide plate 3 is opened for cleaning and wiping.

[0081] In this embodiment, the hinge body 502 includes a first part extending horizontally forward from the rotation axis 5021, a second part extending obliquely downward from the front end of the first part, and a third part extending vertically downward from the front end of the second part, and the connecting part 5022 is disposed on the third part.

[0082] Specifically, the connecting part 5022 extends downward from the front end of the hinge body 502, and the bottom of the connecting part 5022 has a slot that matches the folded edge at the rear end of the guide plate 3. The retaining edge 304 is inserted into the slot and fixed in the slot by a second connecting member that vertically penetrates the connecting part 5022 and the retaining edge 304. The second connecting member can be a screw, bolt, or pin. With the above arrangement, it is possible to avoid making through holes in the guide plate 3, thus preventing oil droplets from seeping through and dripping.

[0083] Preferably, in this embodiment, the rotating shaft 5021 is further provided with a circumferential limiting protrusion 5023 that protrudes radially outward along the rotating shaft 5021. The bushing 5011 of the left hinge seat 501 is sleeved on the rotating shaft 5021 from the left side of the left hinge body 502 and abuts against the limiting protrusion 5023. The bushing 5011 of the right hinge seat 501 is sleeved on the rotating shaft 5021 from the right side of the right hinge body 502 and abuts against the limiting protrusion 5023, thereby limiting the axial position of the guide plate 3.

[0084] Preferably, in this embodiment, the oil cup 4 is mounted on the hinge assembly 5.

[0085] Specifically, the oil cup 4 is located directly below the rear end of the baffle plate 3, with an open top. The oil cup 4 has hanging ears 401 at its left and right ends, and is hung on the bottom of the hinge assembly 5 connected to the smoke hood body 1 via these ears. By mounting the oil cup 4 to the bottom of the hinge assembly 5 via the hanging ears 401 at both ends, interference between the oil cup 4 and the baffle plate 3 during installation is avoided, simplifying the installation process. Furthermore, the distance between the top of the oil cup 4 and the smoke hood body 1 is increased, allowing fumes to be drawn in through this gap, thus increasing the air intake area of ​​the negative pressure zone and improving the smoke extraction effect of the range hood.

[0086] In this embodiment, the hinge seat 501 of the hinge assembly 5 further includes a slot 5012 disposed at the bottom of the hinge seat 501, and the lug 401 of the oil cup 4 is hung in the slot 5012. The slot 5012 is located below the bushing 5011, disposed at the end of the hinge seat 501, and extends rearward from the front end of the hinge seat 501; the lug 401 bends and extends from the top of the left and right side walls of the oil cup 4 toward the middle of the oil cup 4, and is installed in the slot 5012 along the extending direction of the slot 5012.

[0087] Preferably, the lug 401 has an upward or downward protrusion 4011 on the left and right side walls near the oil cup 4. The protrusion 4011 abuts against the side walls of the hinge seats 501 on the left and right sides respectively, so as to limit the installation position of the oil cup 4.

[0088] In this embodiment, the distance between the upper and lower groove walls of the slot 5012 is greater than or equal to the thickness of the lug 401. The front end of the slot 5012 is an opening with a gradually increasing groove width. The upper and lower surfaces of the slot 5012 can be inclined or arc surfaces, which serve as guides when the lug 401 of the oil cup 4 is inserted from the opening.

[0089] Preferably, an elastic arm 5014 is provided on the upper and / or lower side of the slot wall of the slot 5012. The extension direction of the elastic arm 5014 is the same as the extension direction of the slot 5012. The middle part of the elastic arm 5014 is provided with a bent part protruding into the slot 5012. The hanging ear 401 is clamped between the bent part and the slot wall on the opposite side of the elastic arm 5014.

[0090] In this embodiment, the lower side wall of the card slot 5012 is provided with a hollow opening 5015. The elastic arm 5014 extends backward or forward from the inner wall of the front or rear side of the hollow opening 5015. The middle part of the elastic arm 5014 is provided with an upwardly bent part. The distance between the bent part and the upper side wall of the card slot 5012 is less than the thickness of the hanging ear 401, so that when the hanging ear 401 is inserted into the card slot 5012, the hanging ear 401 is clamped between the elastic arm 5014 and the upper side wall of the card slot 5012.

[0091] Preferably, in this embodiment, the hanging ear 401 has a positioning hole in the middle that mates with the bent portion of the elastic arm 5014. The positioning hole is either oblong or strip-shaped. When the hanging ear 401 is installed in place, the bent portion of the elastic arm 5014 engages in the positioning hole, thereby making the installation of the oil cup 4 more stable and the installation position of the oil cup 4 more accurate.

[0092] like Figure 5 and Figure 10 As shown, in this embodiment, the front end of the guide plate 3 is connected to the smoke collection hood body 1 via the snap fastener assembly 8.

[0093] Specifically, the front part of the upper surface of the guide plate 3 is fixed with two connecting seats by welding or bonding. The two connecting seats at the front of the guide plate 3 are respectively fixed with a snap fastener 801 or a snap claw 802 by screws, etc. The bottom of the smoke hood body 1 is provided with a snap claw 802 or a snap fastener 801 at the position corresponding to the snap fastener 801 or the snap claw 802. The head 8021 of the snap claw 802 is arc-shaped and gradually tilts towards the root from the middle to both sides. The neck 8022 is between the head 8021 and the root of the snap claw 802, and its two sides are respectively arc-shaped and concave towards the middle.

[0094] The snap fastener 801 has a longitudinal locking hole 8011 for the snap claw 802 to pass through. The snap fastener 801 has a transverse positioning through hole communicating with the locking hole 8011. Springs 8012 are respectively provided on both sides of the locking hole 8011 in the positioning through hole. The outer side of the spring 8012 is connected to the plug 8013 fixed on the side of the snap fastener 801, and the inner side is connected to the steel ball.

[0095] When the baffle 3 is closed, the claw 802 is inserted into the locking hole 8011. When the neck 8022 moves to the position of the positioning through hole, due to the concavity of the neck 8022, the steel ball, under the action of the spring 8012, is locked into the neck 8022, thus positioning the claw 802 relative to the latch body 801. At this time, the spring 8012 is in a compressed state. The preload provided by the spring 8012 makes the steel ball lock the claw 802, preventing the claw 802 from moving relative to the latch body 801 due to the vibration of the baffle 3 caused by airflow when the range hood is working. The diameter of the steel ball can be the same as the diameter of the neck 8022 of the claw 802 to achieve a tight spherical fit, or it can be slightly smaller than the diameter of the neck 8022 to achieve a slightly tighter fit.

[0096] Preferably, the steel ball can be replaced by a cylindrical locating pin, as long as the end of the locating pin away from the spring 8012 is spherical.

[0097] Example 3

[0098] like Figure 3As shown in this embodiment, the main housing 2 has a mounting beam 6 at its rear end. The mounting beam 6 extends laterally, and the range hood is mounted on the support unit via the mounting beam 6 and a third connecting member. The third connecting member can be a bolt, screw, etc., and the support unit can be a cabinet, wall, or other location where the range hood can be suspended.

[0099] The mounting beam 6 is provided with an installation port. During the installation process, the third connector is first fixed on the bearing part, and then the mounting beam 6 is suspended on the third connector through the installation port to complete the installation.

[0100] In this embodiment, a limiting part 5013 is provided on the hinge seat 501 of the hinge assembly 5. The limiting part 5013 is located at the rear end of the hinge seat 501, extending upward from the rear end of the hinge seat 501. The limiting part 5013 is at least partially sandwiched between the smoke hood and the supporting part, and the rear end face of the limiting part 5013 is coplanar with the rear end face of the mounting beam 6. Thus, the rear end face of the range hood and the supporting surface of the supporting part are parallel to each other and a certain gap is maintained. During the operation of the range hood, the oil fumes flowing upward along the supporting surface can be attracted by the gap between the oil cup 4 and the supporting surface and drawn in from the rear side of the guide plate 3, increasing the air intake area of ​​the negative pressure zone. At the same time, the gap between the supporting surface and the range hood can be used to form an acceleration channel, increasing the suction power, thereby improving the smoke extraction effect of the range hood.

[0101] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A smoke hood, comprising: The smoke hood body (1) has an air inlet at the bottom; The guide plate (3) is located directly below the air inlet and spaced apart from the air inlet. Its rear end is connected to the smoke hood body (1) via a hinge assembly (5). The oil cup (4) is located directly below the rear end of the guide plate (3), and its top is installed at the bottom of the end where the hinge assembly (5) is connected to the smoke hood body (1). The guide vane (3) has an upwardly recessed molding (301) in the middle, the molding (301) including: The planar portion (3011) is located at the front end of the middle part of the guide plate (3); The side portion (3012) extends downward at an angle from the peripheral edge of the planar portion (3011); The smoke inlet (302) is located on the flat part (3011) and is a strip extending in the front and rear directions; The width of the planar portion (3011) gradually decreases from front to back; the smoking port (302) includes two that are parallel to the left and right edges of the planar portion (3011), respectively; The planar part (3011) has an upwardly recessed strip groove (303) in the middle. The left and right walls of the strip groove (303) are set as inclined surfaces that are parallel to the left and right sides of the planar part (3011) and slope downward from the inside. Two smoke inlets (302) are respectively opened on the left and right walls of the strip groove (303). An oil screen (7) is provided at the air inlet. Multiple grille holes (701) are provided on the oil screen (7). A shielding part corresponding to the planar part (3011) is provided in the middle of the oil screen (7). The shape of the shielding part is the same as that of the planar part (3011). The grille holes (701) are provided on the left and right sides of the shielding part. The grille holes (701) provided on the left and right sides of the shielding part are parallel to the left and right edges of the shielding part, respectively.

2. The smoke collection hood according to claim 1, characterized in that, The hinge assembly (5) includes: The hinge seat (501) is located at the bottom rear end of the smoke hood body (1), with the top part for connecting to the smoke hood body (1), the middle front side provided with a bushing (5011), and the bottom part for connecting to the oil cup (4). The hinge body (502) has a rotating shaft (5021) at the rear end that is adapted to the bushing (5011) and a connecting part (5022) at the front end that is connected to the guide plate (3).

3. The smoke collection hood according to claim 2, characterized in that, Also includes: The slot (5012) extends rearward from the front end of the hinge seat (501), and its left and / or right sides are connected to the outside; The lug (401) bends and extends from the top of the left and right side walls of the oil cup (4) toward the middle of the oil cup (4) and is installed in the slot (5012) along the extension direction of the slot (5012).

4. The smoke collection hood according to claim 3, characterized in that, An elastic arm (5014) is provided on the upper and / or lower side of the slot wall of the card slot (5012). The middle part of the elastic arm (5014) is provided with a bent part protruding into the card slot (5012). The hanging ear (401) is clamped between the bent part and the slot wall on the opposite side of the elastic arm (5014). The extension direction of the elastic arm (5014) is the same as the extension direction of the slot (5012).

5. The smoke collection hood according to claim 2, characterized in that, The guide vane (3) has a baffle (304) that extends circumferentially and bends upward along the edge of the guide vane (3). The connecting part (5022) bends downward from the front end of the hinge body (502). The bottom of the connecting part (5022) is provided with a slot that matches the folded edge of the rear end of the guide plate (3). The baffle (304) is inserted into the slot and fixed in the slot by a second connector that vertically penetrates the connecting part (5022) and the baffle (304).

6. The smoke collection hood according to any one of claims 1 to 5, characterized in that, The edge of the smoking port (302) is provided with an upward-turning flange.

7. A range hood equipped with a smoke collection hood as described in any one of claims 1 to 6, comprising a main housing (2) installed above the smoke collection hood, characterized in that, Also includes: The mounting beam (6) is located at the rear end of the main box (2) and is connected to the load-bearing part through the third connector; The limiting part (5013) bends upward from the rear end of the hinge assembly (5) and is sandwiched between the smoke hood and the bearing part. Its rear end face is coplanar with the rear end face of the mounting beam (6).

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