Range hood

Abstract

The invention provides an improved range hood. One embodiment of the invention relates to a range hood. The range hood comprises a shell part, an airflow driving device and a smoke deflector, an air inlet with a downward opening is formed in the bottom of the shell part; the smoke deflector is arranged to be suitable for being switched between a first position and a second position; when the smoke deflector is located at the first position, the smoke deflector is completely or partially embedded into the shell part, and the smoke deflector completely or partially seals the air inlet; when the smoke deflector is located at the second position, the smoke deflector completely or partially moves forwards out of the shell part to form an eave part; the airflow driving device is arranged to be suitable for moving along with the smoke deflector; and when the smoke guide plate is located at the second position, the airflow driving device is arranged to be suitable for generating air curtain airflow for preventing lampblack from escaping and / or ejection airflow for guiding the lampblack to flow into the air inlet. Therefore, the air flow driving device is convenient to hide and store.

Description

[Technical field]

[0001] The present application relates to the field of range hoods. [Background technology]

[0002] In Asia, due to the traditional cooking habit of stir-frying, the oil content in the smoke produced during cooking is particularly high. Therefore, the range hood used to extract the oil smoke produced during cooking has become an important household appliance that is indispensable for daily home use. As people's requirements for the quality of life continue to increase, range hoods are also constantly upgraded and improved. For example, the oil fume extraction efficiency of existing range hoods needs to be improved. In addition, reducing the escape of oil smoke is also a technical problem that needs to be solved urgently in this field. The existing range hoods have a very simple oil cup structure and can no longer meet the increasing needs of users. The existing range hoods also have very simple lighting and atmosphere lighting solutions and can no longer meet the increasing needs of users.

[0003] Furthermore, there are currently proposed solutions for range hoods using cyclone filters, such as the US patent No. US4872892. The existing solutions focus on the cyclone filter itself, which is relatively limited. It can be said that the existing solutions for range hoods using cyclone filters are relatively simple. Moreover, the range hoods used by the existing cyclone filters are mainly side-suction range hoods, which to a certain extent limits the application space of cyclone filters in the range hood field.

[0004] Unless there is sufficient evidence to support it, the prior art described herein does not mean that the prior art is known to ordinary technicians in the field involved in this application before the filing date of this application. [Summary of the invention]

[0005] One purpose of the embodiments of the present application is to provide an improved range hood in view of at least one of the above technical problems and / or other possible technical problems not mentioned in the present application.

[0006] One embodiment of the present application is about a range hood, comprising a shell, an airflow driving device and a smoke guide plate; the bottom of the shell is provided with an air inlet that is open and faces downward; the smoke guide plate is configured to be suitable for switching between a first position and a second position; when the smoke guide plate is in the first position, the smoke guide plate is completely or partially embedded in the shell, and the smoke guide plate completely or partially closes the air inlet; when the smoke guide plate is in the second position, the smoke guide plate is completely or partially moved forward out of the shell to form an eaves; the airflow driving device is configured to be suitable for moving with the smoke guide plate; when the smoke guide plate is in the second position, the airflow driving device is configured to be suitable for generating a wind curtain airflow to prevent oil smoke from escaping and / or an induced airflow to guide oil smoke into the air inlet. Thus, the conventional setting is broken through, the airflow driving device is made dynamic, and the basic functions are realized while facilitating the hiding and storage of the airflow driving device.

[0007] When the smoke guide plate is located at the first position, the smoke guide plate is completely or partially embedded in the shell; thus, when the smoke guide plate is located at the first position, the smoke guide plate is at least partially hidden, thereby ensuring the oil fume extraction function while reducing the space occupied by the range hood.

[0008] In one or some embodiments, the airflow driving device is disposed at the free end of the smoke guide plate; the airflow outlet of the airflow driving device faces the air inlet located at the rear side thereof.

[0009] In one or some embodiments, when the smoke guide plate switches between the first position and the second position, the smoke guide plate moves in a horizontal direction; and / or

[0010] The airflow inlet of the airflow driving device is open and arranged downward; and / or

[0011] The airflow driving device is embedded and hidden in the smoke guide plate; and / or

[0012] The airflow driving device is in the shape of a rectangular parallelepiped as a whole; and / or

[0013] The airflow driving device comprises a rectangular housing and a crossflow fan arranged in the housing; and / or

[0014] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate, and the airflow outputted from the airflow outlet of the airflow driving device flows toward the air inlet along the bottom wall of the smoke guide plate; and / or

[0015] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate, a lighting module is installed on the airflow driving device, the lighting module is blocked by the airflow driving device in the horizontal direction, and the lighting module is located below the airflow outlet of the airflow driving device; and / or

[0016] Slide rails are arranged on both sides of the smoke guide plate, and the airflow driving device is connected between the slide rails on the left and right sides. The three together form a U-shaped convex edge with an opening arranged on the bottom wall of the smoke guide plate facing the air inlet.

[0017] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate. A lighting module is installed on the airflow driving device. The lighting module is blocked by the airflow driving device in the horizontal direction. The lighting module is located below the airflow outlet of the airflow driving device. Thus, the lighting module is hidden and the space is effectively utilized. The lighting module is located below the airflow outlet of the airflow driving device. Thus, while the lighting module realizes the lighting function, it is also suitable for guiding the airflow to flow toward the air inlet along the bottom wall of the smoke guide plate.

[0018] Slide rails are provided on both the left and right sides of the smoke guide plate, and the airflow driving device is connected between the slide rails on the left and right sides. The three together form a U-shaped protrusion with an opening arranged on the bottom wall of the smoke guide plate facing the air inlet; thus, the smoke gathering cavity surrounded by the U-shaped protrusion is suitable for gathering smoke and guiding the gathered oil smoke to the air inlet.

[0019] In one or some embodiments, the airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate, a lighting module is installed on the airflow driving device, the lighting module is blocked by the airflow driving device in the horizontal direction, the lighting module is located below the airflow outlet of the airflow driving device, and the lighting module is configured to directly provide lighting for the cooking area below; and / or

[0020] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate, a lighting module is installed on the airflow driving device, the lighting module is blocked by the airflow driving device in the horizontal direction, the lighting module is located below the airflow outlet of the airflow driving device, and the lighting module is configured to emit light to the bottom wall of the smoke guide plate and provide lighting for the cooking area below after being reflected by the bottom wall of the smoke guide plate; and / or

[0021] The airflow driving device is arranged below the smoke guide plate and is close to the bottom wall of the smoke guide plate. A lighting module is installed on the airflow driving device. The lighting module is blocked by the airflow driving device in the horizontal direction. The lighting module is located below the airflow outlet of the airflow driving device. The lighting module is configured to direct light toward the bottom wall of the smoke guide plate and pass through the wall of the smoke guide plate to form ambient light above the smoke guide plate.

[0022] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate. A lighting module is installed on the airflow driving device. The lighting module is blocked by the airflow driving device in the horizontal direction. The lighting module is located below the airflow outlet of the airflow driving device. The lighting module is arranged to directly provide lighting for the cooking area below. Thus, the lighting module is hidden and the space is effectively utilized. The lighting module is located below the airflow outlet of the airflow driving device. Thus, the lighting module is suitable for guiding the airflow to flow toward the air inlet along the bottom wall of the smoke guide plate while realizing the lighting function.

[0023] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate. A lighting module is installed on the airflow driving device. The lighting module is blocked by the airflow driving device in the horizontal direction. The lighting module is located below the airflow outlet of the airflow driving device. The lighting module is arranged to be suitable for emitting light toward the bottom wall of the smoke guide plate and providing lighting for the cooking area below after being reflected by the bottom wall of the smoke guide plate; thereby, the lighting module is hidden and space is effectively utilized. The lighting module is located below the airflow outlet of the airflow driving device. Thus, while the lighting module realizes the lighting function, it is also suitable for guiding the airflow to flow along the bottom wall of the smoke guide plate toward the air inlet.

[0024] The airflow driving device is arranged below the smoke guide plate and abuts against the bottom wall of the smoke guide plate. A lighting module is installed on the airflow driving device. The lighting module is blocked by the airflow driving device in the horizontal direction. The lighting module is located below the airflow outlet of the airflow driving device. The lighting module is configured to be suitable for emitting light toward the bottom wall of the smoke guide plate and passing through the wall of the smoke guide plate to form an ambient light above the smoke guide plate. Thus, the lighting module is hidden and the space is effectively utilized. The lighting module is located below the airflow outlet of the airflow driving device. Thus, while the lighting module realizes the lighting function, it is also suitable for guiding the airflow along the bottom wall of the smoke guide plate to flow toward the air inlet. The lighting module is configured to be suitable for emitting light toward the bottom wall of the smoke guide plate and passing through the wall of the smoke guide plate to form an ambient light above the smoke guide plate. Thus, the conventional ambient light setting mode is broken through, and a new ambient light arrangement scheme is proposed.

[0025] In one or some embodiments, it includes a driving module, which is configured to drive the smoke guide plate to switch between a first position and a second position; the driving module includes a motor, a first gear and a rack; the rack is arranged on the top wall of the smoke guide plate; the motor is configured to drive the first gear to rotate; the rotating first gear drives the rack to move, and the smoke guide plate moves with the rack.

[0026] In one or some embodiments, the smoke guide plate includes a glass top plate, and the rack is integrally formed on the glass top plate; and / or

[0027] It includes a second gear connected between the first gear and the rack, the diameter of the second gear is larger than the diameter of the first gear, the rotating first gear drives the second gear to rotate, and the rotating second gear drives the rack to move.

[0028] In one or some embodiments, a centrifugal fan and a cyclonic filter are sequentially arranged in the housing from top to bottom; when the smoke guide plate is in the first position, the cyclonic filter is located above the smoke guide plate; when the smoke guide plate is in the second position, the airflow drive device is configured to be suitable for delivering an induced airflow to the cyclonic filter. The centrifugal fan, the airflow drive device and the cyclonic filter are cleverly coordinated to help improve the efficiency of oil fume extraction.

[0029] In one or some embodiments, the cyclone filtering device is arranged obliquely in the shell; the cyclone filtering device includes a plurality of cyclone ducts arranged side by side; a first exhaust port is provided at one end of the cyclone duct that is tilted upward; the first exhaust port faces the front side wall of the shell; an air inlet is provided on the tube wall of the cyclone duct, and the air inlet is open toward the air inlet located below it.

[0030] In one or some embodiments, the air flow inlet of the centrifugal fan is spaced apart from the front side wall of the housing to form an air flow channel, and the first exhaust port faces the air flow channel; and / or

[0031] The bottom of the volute of the centrifugal fan is provided with an inclined section, and the inclined section extends upwardly and obliquely toward the front side wall of the housing member; and / or

[0032] The first exhaust port is an inclined cutout opening toward the front side wall of the housing member; and / or

[0033] The inclination angle of the cyclone filter device is an acute angle and is greater than or equal to 13°.

[0034] In one or some embodiments, the cyclone filter device is provided with an oil cup support frame suspended at its bottom end. Thus, the integrated arrangement of the oil cup support frame and the cyclone filter device is realized, which is a breakthrough in the conventional application structure of the cyclone filter device and brings new possibilities for product design.

[0035] In one or some embodiments, the oil cup support frame is provided with a protrusion, which is configured to be suitable for spacing adjacently arranged oil cups; and / or

[0036] The oil cup support frame comprises a square frame portion with an opening facing forward, and a stop flange is arranged at the bottom edge of the opening of the square frame portion; and / or

[0037] The oil cup support frame comprises a square frame portion with an opening facing forward and a door portion suitable for controlling the opening and closing of the opening of the square frame portion; and / or

[0038] The oil cup support frame is integrally formed with the cyclone filter device or detachably fixed to the cyclone filter device.

[0039] In one or some embodiments, when the smoke guide plate is located at the first position, the shell member and the smoke guide plate are both in a rectangular parallelepiped shape as a whole; and / or

[0040] A slide rail is arranged between the smoke guide plate and the shell member, the slide rail comprises a guide rail and a movable rail, the guide rail is arranged on the shell member, the movable rail is in a "bow" shape, the movable rail comprises a bow back opening and a bow-shaped opening arranged opposite to each other, the guide rail is embedded in the bow back opening, the end of the airflow driving device is embedded in the bow-shaped opening, and the smoke guide plate is placed on the movable rail and the airflow driving device; and / or

[0041] The cyclone filter device comprises a plurality of cyclone ducts arranged side by side, the cyclone ducts are provided with air inlets on their walls, the air inlets are open toward the air inlet located below them, the cyclone filter device comprises an integral extension surface, the air inlet is integrally formed on the integral extension surface; and / or

[0042] It includes a cyclone filter device, which includes a plurality of cyclone ducts arranged side by side. When the smoke guide plate is located at the second position, the airflow driving device is configured to be suitable for conveying an induced airflow to the cyclone filter device. An air inlet is provided on the tube wall of the cyclone duct, and the air inlet is open toward the air inlet located below it. The cyclone filter device includes an integrated plane, and the air inlet is integrally formed on the integrated plane.

[0043] It includes a cyclone-type filtering device, which includes a plurality of cyclone ducts arranged side by side, an air inlet is provided on the tube wall of the cyclone duct, and the air inlet is open toward the air inlet located below it. The cyclone-type filtering device includes an integrated extension surface, and the air inlet is integrally formed on the integrated extension surface; therefore, the setting of the "integrated extension surface" can not only reduce the adhesion of grease, but also facilitate cleaning operations.

[0044] It includes a cyclone filter device, which includes a plurality of cyclone ducts arranged side by side. When the smoke guide plate is located at the second position, the airflow driving device is configured to be suitable for conveying an induced airflow to the cyclone filter device. An air inlet is provided on the tube wall of the cyclone duct, and the air inlet is open to the air inlet located below it. The cyclone filter device includes an integrated plane, and the air inlet is integrally formed on the integrated plane. Therefore, the setting of the "integrated plane" can not only reduce the adhesion of grease, but also facilitate cleaning operations.

[0045] When the smoke guide plate is located at the first position, the shell member and the smoke guide plate are both in a rectangular shape as a whole. Therefore, when the smoke guide plate is located at the first position, the smoke guide plate is hidden, which ensures the oil fume extraction function while reducing the space occupied by the range hood, making it easy to embed the range hood in the cabinet, thereby improving the integration effect of the range hood and the cabinet.

[0046] It should be noted here that directional expressions such as "downward", "rear side", "from top to bottom", "forward", and "below" appearing in this application, unless otherwise specified, are based on the usual usage state of the range hood.

[0047] It should be pointed out here that the “first” and “second” appearing in this specification are only used for descriptive purposes and are not used to indicate relative importance; moreover, they are not a definition of the quantity of the features they define; in addition, they are not a definition of the logical or sequential relationship of the features they define.

[0048] The above technical solutions of the present application are not intended to describe all possible implementations of the present application. Throughout the application, guidance is provided by listing examples in many places, and these examples can be used in various feasible combinations.

Brief Description of the Drawings

[0049] The following drawings are only used to illustrate and explain the present application, and do not limit the scope of the present application, wherein:

[0050] Figure 1 is a structural schematic diagram of a range hood embodiment of the present application;

[0051] Figure 2is a structural schematic diagram of a range hood embodiment of the present application;

[0052] Figure 3 is a structural schematic diagram of a range hood embodiment of the present application;

[0053] Figure 4 is along Figure 3 Sectional view along the midline BB;

[0054] Figure 5 is a structural schematic diagram of a range hood embodiment of the present application;

[0055] Figure 6 is a structural schematic diagram of a range hood embodiment of the present application;

[0056] Figure 7 is along Figure 6 Sectional view along the midline BB;

[0057] Figure 8 It is a partial structural schematic diagram of a range hood embodiment of the present application;

[0058] Fig. 9 is a cross-sectional view of an embodiment of a range hood of the present application;

[0059] Fig.10 It is a partial structural schematic diagram of a range hood embodiment of the present application;

[0060] Fig.11 is a structural schematic diagram of a range hood embodiment of the present application;

[0061] Fig.12 It is a partial structural schematic diagram of a range hood embodiment of the present application;

[0062] Fig.13 This is an installation and application effect diagram of a range hood embodiment of the present application;

[0063] Fig.14 yes Fig.13 A diagram of the changing states of the structure shown;

[0064] Fig.15 This is another installation and application effect diagram of a range hood embodiment of the present application;

[0065] Fig.16 yes Fig.15 A diagram of the changing states of the structure shown;

[0066] Fig.17 is a partial structural schematic diagram of another range hood embodiment of the present application;

[0067] Fig.18 yes Fig.17A schematic diagram of a cyclonic filter device and its associated structure in an embodiment of a range hood shown;

[0068] Fig.19 yes Fig.18 An exploded view of the structure shown;

[0069] Fig. 20 yes Fig.18 a cross-sectional view of the structure shown;

[0070] Fig.21 yes Fig.18 Another cross-sectional view of the structure shown;

[0071] Fig. 22 yes Fig.17 A schematic structural diagram of an oil cup of a range hood embodiment shown;

[0072] Fig.23 It is a schematic diagram of a cyclonic filter device and its associated structure in another embodiment of a range hood of the present application;

[0073] Fig.24 yes Fig.23 An exploded view of the structure shown;

[0074] Fig.25 yes Fig.23 A diagram of the changing states of the structure shown;

[0075] Fig.26 is a partial structural schematic diagram of another range hood embodiment of the present application;

[0076] Fig. 27 This is an installation and application effect diagram of another range hood embodiment of the present application;

[0077] Fig.28 yes Fig. 27 A diagram of the changing states of the structure shown;

[0078] Fig.29 This is an installation and application effect diagram of another range hood embodiment of the present application.

[0079] Reference numerals:

[0080] 1-shell member, 2-smoke guide plate, 3-casing, 4-crossflow impeller, 5-airflow outlet, 6-airflow inlet, 7-lighting module, 8-centrifugal fan, 9-cyclonic filter device, 10-first exhaust port, 11-first gear, 12-second gear, 13-rack, 14-frame portion, 15-anti-slip flange, 16-door body, 17-guide rail, 18-movable rail, 19-slider, 20-duct seat, 21-electrical box, 22-control switch, 23-oil cup, 24-raised portion, 25-cabinet, 26-stove, 27-inclined section. [Specific implementation method]

[0081] In order to make the purpose, scheme and beneficial effects of the present application more clear, the present application is further described below in conjunction with the accompanying drawings and preferred embodiments.

[0082] The present application proposes an embodiment of a range hood, comprising a housing 1, an airflow driving device, a smoke guide plate 2, a lighting module 7, a centrifugal fan 8, a cyclonic filter device 9, a driving module, an oil collecting element, an air duct seat 20 and an electrical box 21, as shown in FIG. Figures 1 to 12 The air duct seat 20 and the electrical appliance box 21 are both arranged on the top wall of the housing 1. The range hood is a top suction range hood.

[0083] like Figure 1 and 5 As shown, the bottom of the housing 1 is provided with an air inlet opening facing downward. The smoke guide plate 2 is configured to be suitable for switching between a first position and a second position. In other words, the smoke guide plate 2 is movable. Specifically, the smoke guide plate 2 moves under the drive of the driving module. The bottom edge of the housing 1 is the bottom end of the range hood. Figure 1 and 2 As shown in FIG. 1 , the air inlet is located at the bottom of the range hood. The bottom edge of the housing 1 is used as the edge of the air inlet.

[0084] When the smoke guide plate 2 is in the first position, the housing 1 and the smoke guide plate 2 are in a rectangular parallelepiped shape as a whole. When the smoke guide plate 2 is in the first position, the smoke guide plate 2 is completely embedded in the housing 1, and the smoke guide plate 2 partially closes the air inlet. Figures 1 to 4 When the smoke guide plate 2 is in the first position, the smoke guide plate 2 partially closes the air inlet, and the air inlet is still open, but the air inlet is smaller than when the smoke guide plate 2 is in the second position. When the smoke guide plate 2 is in the first position, if the centrifugal fan 8 is running, the range hood can still exhaust oil smoke through the air inlet, but it is preferably applied to the case where the oil smoke generated by the stove 26 is small.

[0085] When the smoke guide plate 2 is located at the second position, the smoke guide plate 2 is partially moved forward out of the housing 1 to form a flange portion. Figures 5 to 11 As shown, the air inlet is completely open. The airflow driving device is configured to move with the smoke guide plate 2. When the smoke guide plate 2 is in the second position, the airflow driving device is approximately located at the free end of the formed eaves, such as Figure 7 , 9 , 10 and 11. When the smoke guide plate 2 is in the second position, the airflow driving device is configured to generate an induced airflow to guide the oil smoke into the air inlet. When the smoke guide plate 2 is in the second position, the housing 1 and the smoke guide plate 2 are in an "L" shape as a whole.

[0086] When the smoke guide plate 2 switches between the first position and the second position, the smoke guide plate 2 moves in the horizontal direction. When the smoke guide plate 2 switches from the first position to the second position, the smoke guide plate 2 moves forward in the horizontal direction. When the smoke guide plate 2 switches from the second position to the first position, the smoke guide plate 2 moves backward in the horizontal direction.

[0087] The driving module is configured to drive the smoke guide plate 2 to switch between the first position and the second position. Specifically, the driving module is configured to drive the smoke guide plate 2 to make a linear motion and switch between the first position and the second position. The driving module includes a motor, a first gear 11, a second gear 12 and a rack 13. The rack 13 is disposed on the top wall of the smoke guide plate 2. The motor is configured to drive the first gear 11 to rotate. The rotating first gear 11 drives the rack 13 to move, and the smoke guide plate 2 moves with the rack 13. Specifically, the second gear 12 is connected and disposed between the first gear 11 and the rack 13, as shown in FIG. Fig.10 The second gear 12 is meshed with both the first gear 11 and the rack 13. The rotating first gear 11 drives the second gear 12 to rotate, and the rotating second gear 12 drives the rack 13 to move. The diameter of the second gear 12 is greater than that of the first gear 11.

[0088] The smoke guide plate 2 includes a glass top plate, and the rack 13 is integrally formed on the glass top plate. Specifically, the rack 13 can be processed by rolling in the process of forming the glass top plate; the rack 13 can be processed by rolling after the glass top plate is heated and softened; or the rack 13 can be directly formed on the glass top plate by CNC technology.

[0089] The airflow driving device is in the shape of a rectangular parallelepiped as a whole. The airflow driving device is a crossflow fan. The crossflow fan comprises a rectangular parallelepiped housing 3 and a crossflow impeller 4 disposed in the housing 3. Fig. 9 and 10 The airflow driving device is arranged at the free end of the smoke guide plate 2, as shown in FIG. Figures 9 to 11 When the smoke guide plate 2 is in the second position, the free end of the smoke guide plate 2 is at the frontmost side of the range hood. The airflow inlet 6 of the airflow driving device is open and arranged downward, and the airflow inlet 6 is generally toward the cooking area below, so that when the cross-flow fan is running, part of the escaping oil smoke airflow will be sucked into the airflow inlet 6 and flow into the air inlet along with the induced airflow, thereby improving the oil smoke extraction effect.

[0090] The airflow driving device comprises a rear wall extending vertically downward, and the airflow outlet 5 of the airflow driving device is arranged on the rear wall extending vertically downward. The airflow outlet 5 of the airflow driving device faces the air inlet located at the rear side thereof, such as Fig. 9 and 10 shown.

[0091] The airflow driving device is arranged below the smoke guide plate 2 and abuts against the bottom wall of the smoke guide plate 2, and the airflow outputted by the airflow outlet 5 of the airflow driving device flows toward the air inlet along the bottom wall of the smoke guide plate 2. Because the airflow outlet 5 of the airflow driving device faces the air inlet located at the rear side thereof, and the airflow outlet 5 of the airflow driving device abuts against the bottom wall of the smoke guide plate 2, when the cross-flow fan is running, the induced airflow generated will flow along the bottom wall of the smoke guide plate 2 under the action of the Coanda effect, and then flow into the air inlet. It should be noted here that the Coanda Effect is also called the wall attachment effect or the Coanda effect.

[0092] When the oil smoke generated by the stove 26 is large, the smoke guide plate 2 is controlled to switch to the second position, the centrifugal fan 8 is turned on and operated, and the cross-flow fan is turned on and operated at the same time. The operation of the centrifugal fan 8 generates negative pressure at the air inlet, and the induced airflow generated by the cross-flow fan will flow to the air inlet under the action of the Coanda effect, thereby reducing the escape of oil smoke and improving the oil smoke extraction effect.

[0093] When the oil smoke generated by the cooking appliance 26 is of medium size, in order to exhaust the oil smoke, the smoke guide plate 2 is controlled to switch to the second position, the centrifugal fan 8 is turned on, but the cross-flow fan is not turned on.

[0094] Slide rails are provided on both sides of the smoke guide plate 2, and an airflow driving device is provided between the slide rails on the left and right sides. The slide rails on the left and right sides and the airflow driving device together form a U-shaped convex edge with an opening on the bottom wall of the smoke guide plate 2 facing the air inlet, such as Figure 5 and 11 As shown, the U-shaped convex edge and the bottom wall of the smoke guide plate 2 together form a smoke-collecting concave cavity. It should be noted that the "U-shaped convex edge with an opening toward the air inlet" means that the "U-shaped" opening of the U-shaped convex edge faces the air inlet. Specifically, the slide rail is arranged between the smoke guide plate 2 and the shell member 1. The slide rail includes a guide rail 17 and a movable rail 18. The guide rail 17 is arranged on the shell member 1, and a slider 19 suitable for sliding along the guide rail 17 is embedded in the guide rail 17. The movable rail 18 is in a "bow" shape, and the movable rail 18 includes a bow back opening and a bow-shaped opening arranged opposite to each other. The guide rail 17 is embedded in the bow back opening, and the slider 19 is fixed to the movable rail 18. The end of the airflow driving device is embedded in the bow-shaped opening. The smoke guide plate 2 is placed on the movable rail 18 and the airflow driving device.

[0095] The outer wall of the airflow driving device extends vertically downward. A control switch 22 is arranged on the outer wall of the airflow driving device. Figure 1 , 2 , 3, 5 and 6.

[0096] When the smoke guide plate 2 is in the first position, the airflow driving device extends from one end of the housing 1 to the other end. Specifically, when the smoke guide plate 2 is in the first position, the airflow driving device extends from the left side wall of the housing 1 to the right side wall of the housing 1. Figure 1 , 2 , 3, 5 and 6. When the smoke guide plate 2 is in the first position, the outer wall of the airflow driving device is connected to the front side wall of the housing 1, the outer wall of the airflow driving device is also connected to the left side wall of the housing 1, and the outer wall of the airflow driving device is also connected to the right side wall of the housing 1. The airflow driving device is located at the bottom of the range hood.

[0097] The centrifugal fan 8 and the cyclonic filter device 9 are sequentially arranged in the housing 1 from top to bottom. Figure 4 , 7 , 8 and 9. When the smoke guide plate 2 is in the first position, the cyclone filter device 9 is located above the smoke guide plate 2, as shown in FIG. Figure 4 When the smoke guide plate 2 is in the second position, the airflow driving device is configured to deliver the induced airflow to the cyclone filter device 9, as shown in FIG. Figure 7 , 8 As shown in FIG. 9 , the air flow driving device and the cyclone filter device 9 are cleverly matched to improve the air intake effect.

[0098] The cyclone filter device 9 is arranged obliquely in the housing 1. The inclination angle of the cyclone filter device 9 is an acute angle. Preferably, the inclination angle of the cyclone filter device 9 is equal to 15°. Figure 4 , 7 , 8 and 9. The cyclone filter device 9 comprises a plurality of cyclone pipes arranged side by side. Each cyclone pipe is roughly cylindrical. Preferably, the cyclone filter device 9 adopts an integrally formed structure. For example, the cyclone filter device 9 is made of a plastic material in an integrally formed structure.

[0099] A first exhaust port 10 is provided at one end of the cyclone duct that is tilted upward. Figure 4 , 7 , 8 and 9. An air inlet is provided on the tube wall of the cyclone duct, and the air inlet is open toward the air inlet located below it. The air inlet is in the shape of an elongated strip, and is arranged along the extension direction of the tube wall of the corresponding cyclone duct. The air inlets of each cyclone duct are parallel to each other, and the air inlet of each cyclone duct extends along the inclination direction of the cyclone filter device 9. It should be noted here that the first exhaust port 10 is provided at one end of the cyclone duct, and the other end of the cyclone duct can be roughly closed with only an oil leakage hole or a second exhaust port. The other end of the cyclone duct is provided above the oil collecting element. The oil collecting element is used to collect grease dripping from the other end of the cyclone duct. The oil collecting element is in the shape of an elongated strip, and is fixed to the rear side wall of the shell member 1, as shown in FIG. Figure 1 , 2, 4, 5, 7, 8 and 9. The oil collecting element is horizontally shielded by the air flow driving device located in front of it, as shown in Figure 3 shown.

[0100] The first exhaust port 10 faces the front side wall of the housing 1. Figure 4 , 7 As shown in Figures 9 and 10. The front side wall of the housing member 1 is as shown in Figures 9 and 10. Fig. 9 As shown by the reference numeral "P" in the figure. The first exhaust port 10 is an inclined cutout opened toward the front side wall of the housing member 1. It should be noted here that "inclined cutout" is only a figurative expression; specifically, there are many possible ways to form the "inclined cutout", and it is not necessarily formed by a cutting process.

[0101] The cyclone filter device 9 includes an integral extension surface, and the air inlet is integrally formed on the integral extension surface. The integral extension surface is the bottom outer surface of the cyclone filter device 9. Specifically, the integral extension surface is an integral plane, and the air inlet is integrally formed on the integral plane. The inclination angle of the integral plane is an acute angle, preferably, the inclination angle of the integral plane is equal to 15°, such as Figure 1 and 5 shown.

[0102] The front end of the integral plane is integrally formed with a first flange, the first flange is close to the front side wall of the shell 1, and the first flange is fixed to the front side wall of the shell 1 by screws. Figure 4 , 7 The rear end of the integral plane is integrally formed with a second flange, the second flange is close to the rear side wall of the housing 1, and the second flange is fixed to the rear side wall of the housing 1 by screws, as shown in FIG. Figure 4 , 7 and 9.

[0103] The air inlet of the centrifugal fan 8 is spaced apart from the front side wall of the housing 1 to form an air flow channel. The air inlet of the centrifugal fan 8 is open horizontally toward the front, and the first exhaust port 10 faces the air flow channel. Figure 4 , 7 As shown in Figure 9. It should be noted that the centrifugal fan 8 can have either single-side air intake or double-side air intake. If the centrifugal fan 8 has double-side air intake, the "airflow inlet of the centrifugal fan 8" refers to the main airflow inlet of the centrifugal fan 8, and the "main airflow inlet" is not provided with a motor fixing bracket. Figure 4 , 7 , 8 and 9 show the centrifugal fan 8 with double-sided air intake. The "airflow channel" is formed by the main airflow inlet of the centrifugal fan 8 and the front side wall of the housing 1.

[0104] The bottom of the volute of the centrifugal fan 8 is provided with an inclined section 27, such as Figure 4 ,7 , 8 and 12. The inclined cut surface 27 extends upwardly and obliquely toward the front side wall of the housing 1. It should be noted that the "inclined cut surface 27" is only a figurative expression; specifically, the "inclined cut surface 27" may be formed in a variety of ways, and is not necessarily formed by a cutting process.

[0105] When the range hood is embedded in the cabinet 25, one installation effect is as follows: Fig.13 and 14 As shown. Since the range hood is a top suction range hood, only the outer wall of the airflow driving device is visible in the horizontal direction. The range hood is arranged directly above the stove 26. The housing 1 is hidden in the cabinet 25. When the smoke guide plate 2 is in the first position, the outer wall of the airflow driving device fills the gap at the bottom of the cabinet 25, so that the range hood and the cabinet 25 are both rectangular as a whole. Fig.13 When the smoke guide plate 2 is in the second position, the airflow driving device protrudes and is placed on the front side of the cabinet 25, as shown in FIG. Fig.14 shown.

[0106] When the range hood embodiment is embedded in the cabinet 25, another installation effect is as follows: Fig.15 and 16 As shown. Since the range hood is a top suction range hood, only the outer wall of the airflow driving device is visible in the horizontal direction. The range hood is arranged directly above the stove 26. The housing 1 is hidden in the cabinet 25. When the smoke guide plate 2 is in the first position, the top wall of the smoke guide plate 2 is against the bottom edge of the cabinet 25, as shown in FIG. Fig.15 When the smoke guide plate 2 is in the second position, the airflow driving device protrudes and is placed on the front side of the cabinet 25, as shown in FIG. Fig.16 shown.

[0107] The present application also proposes another range hood embodiment, which does not have the above-mentioned oil collecting element. Instead, the cyclone filter device 9 of the other range hood embodiment is provided with an oil cup 23 support frame suspended at its bottom end, such as Figures 17 to 21 The oil cup 23 support frame includes a square frame portion 14 with an opening facing forward, and a stop flange 15 is provided at the bottom edge of the opening of the square frame portion 14. The oil cup 23 support frame is provided with a protrusion 24, which is configured to be suitable for spacing the adjacently arranged oil cups 23. A total of three oil cups 23 are provided, and each oil cup 23 is as shown in FIG. Fig. 22As shown. Correspondingly, the oil cup 23 support frame is provided with two protrusions 24, one located on the left side of the frame portion 14, and the other located on the right side of the frame portion 14. Preferably, the protrusion 24 is also configured to be suitable for fixing the corresponding oil cup 23. The oil cup 23 on the left is squeezed and fixed between the protrusion 24 on the left and the left wall of the frame portion 14. The middle oil cup 23 is squeezed and fixed between the protrusion 24 on the left and the protrusion 24 on the right. The oil cup 23 on the right is squeezed and fixed between the protrusion 24 on the right and the right wall of the frame portion 14. Specifically, the oil cup 23 can be either disposable or reusable. The oil cup 23 support frame is integrally formed with the cyclone filter device 9 or can be detachably fixed to the cyclone filter device 9. It should be noted here that the number of oil cups 23 is not limited to three, and can also be one, two, four or more.

[0108] The present application also proposes another range hood embodiment, which does not have the above-mentioned oil collecting element. Instead, the cyclone filter device 9 of the other range hood embodiment is provided with an oil cup 23 support frame suspended at its bottom end, such as Figures 23 to 25 The oil cup 23 support frame includes a square frame portion 14 with an opening facing forward and a door body portion 16 suitable for controlling the opening and closing of the square frame portion 14. The oil cup 23 support frame is provided with a protrusion 24, which is configured to be suitable for spacing the adjacently arranged oil cups 23. A total of three oil cups 23 are provided, each of which is as shown in FIG. Fig. 22 As shown. Accordingly, the oil cup 23 support frame is provided with two protrusions 24, one is located on the left side of the frame portion 14, and the other is located on the right side of the frame portion 14. Preferably, the protrusion 24 is also configured to be suitable for fixing the corresponding oil cup 23. The oil cup 23 on the left is squeezed and fixed between the protrusion 24 on the left and the left wall of the frame portion 14. The middle oil cup 23 is squeezed and fixed between the protrusion 24 on the left and the protrusion 24 on the right. The oil cup 23 on the right is squeezed and fixed between the protrusion 24 on the right and the right wall of the frame portion 14. Specifically, it can be disposable or reusable. Accordingly, two protrusions 24 are provided. The oil cup 23 support frame is integrally formed with the cyclone filter device 9 or can be detachably fixed to the cyclone filter device 9. It should be noted here that the number of oil cups 23 is not limited to three, and can also be one, two, four or more. In addition, it should be noted that, Fig.25 The above-mentioned structure of "the air inlet is integrally formed on a single plane" is clearly shown.

[0109] The present application also proposes another range hood embodiment, wherein the airflow driving device is arranged below the smoke guide plate 2 and abuts against the bottom wall of the smoke guide plate 2, and a lighting module 7 is installed on the airflow driving device. The lighting module 7 is shielded by the airflow driving device in the horizontal direction, and the lighting module 7 is configured to directly provide lighting for the cooking area below. Fig.26 As shown. The lighting module 7 is attached and fixed to the rear wall of the airflow driving device extending vertically downward. The lighting module 7 is located below the airflow outlet 5 of the airflow driving device. It should be noted that Fig.26 The structure shown has not yet been installed with LED lamp beads.

[0110] The present application also proposes another embodiment of a range hood, wherein an airflow driving device is disposed below the smoke guide plate 2 and abuts against the bottom wall of the smoke guide plate 2, and a lighting module 7 is installed on the airflow driving device. The lighting module 7 is shielded by the airflow driving device in the horizontal direction, and the lighting module 7 is configured to be suitable for irradiating light to the bottom wall of the smoke guide plate 2 and reflecting light from the bottom wall of the smoke guide plate 2 to provide lighting for the cooking area below. Fig. 27 and 28 The lighting module 7 is attached and fixed to the rear wall of the airflow driving device extending vertically downward. The lighting module 7 is located below the airflow outlet 5 of the airflow driving device.

[0111] The present application also proposes another range hood embodiment, in which the airflow driving device is arranged below the smoke guide plate 2 and close to the bottom wall of the smoke guide plate 2, and a lighting module 7 is installed on the airflow driving device. The lighting module 7 is blocked by the airflow driving device in the horizontal direction, and the lighting module 7 is configured to be suitable for irradiating light to the bottom wall of the smoke guide plate 2 and passing through the wall of the smoke guide plate 2 to form an ambient light above the smoke guide plate 2, such as Fig.29 The lighting module 7 is attached and fixed to the rear wall of the airflow driving device extending vertically downward. The lighting module 7 is located below the airflow outlet 5 of the airflow driving device.

[0112] Exemplarily, it is also possible that when the smoke guide plate is in the first position, the smoke guide plate is completely or partially embedded in the shell, and the smoke guide plate completely closes the air inlet. Preferably, at this time, the rear end edge of the smoke guide plate abuts against the oil cup 23 support frame or the oil collecting element.

[0113] Exemplarily, when the smoke guide plate is in the second position, the airflow driving device is configured to generate an air curtain airflow for preventing the escape of oil smoke. For example, the airflow driving device sprays airflow downward to form an air curtain that at least partially surrounds the cooking area, and the air curtain is suitable for preventing the escape of oil smoke generated by the stove in the cooking area.

[0114] The components of different embodiments may be combined with each other in any feasible manner to achieve the purpose of this application.

[0115] The above are only optional embodiments of some implementation scenarios of the present application. It should be noted that, for ordinary technicians in this technical field, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the technical concept of the present application also fall within the protection scope of the present application.

Claims

1. A range hood, characterized in that: It comprises a housing (1), an airflow driving device and a smoke guide plate (2); The bottom of the housing (1) is provided with an air inlet opening facing downward; The smoke guide plate (2) is configured to be suitable for switching between a first position and a second position; When the smoke guide plate (2) is located at the first position, the smoke guide plate (2) is completely or partially embedded in the housing (1), and the smoke guide plate (2) completely or partially closes the air inlet; When the smoke guide plate (2) is located at the second position, the smoke guide plate (2) is completely or partially moved forward out of the housing (1) to form an eaves portion; The airflow driving device is configured to move together with the smoke guide plate (2); When the smoke guide plate (2) is located at the second position, the airflow driving device is configured to generate an air curtain airflow for preventing the escape of oil smoke and / or an induced airflow for guiding the oil smoke to flow into the air inlet.

2. The range hood according to claim 1, characterized in that: The airflow driving device is arranged at the free end of the smoke guide plate (2); The airflow outlet (5) of the airflow driving device faces the air inlet located at the rear side thereof.

3. The range hood according to claim 2, characterized in that: When the smoke guide plate (2) switches between the first position and the second position, the smoke guide plate (2) moves in a horizontal direction; and / or The airflow inlet (6) of the airflow driving device is open and arranged downward; and / or The airflow driving device is embedded and hidden in the smoke guide plate (2); and / or The airflow driving device is in the shape of a rectangular parallelepiped as a whole; and / or The airflow driving device comprises a rectangular parallelepiped housing (3) and a cross-flow fan arranged in the housing (3); and / or The airflow driving device is arranged below the smoke guide plate (2) and abuts against the bottom wall of the smoke guide plate (2), and the airflow outputted by the airflow outlet (5) of the airflow driving device flows along the bottom wall of the smoke guide plate (2) toward the air inlet; and / or The airflow driving device is arranged below the smoke guide plate (2) and abuts against the bottom wall of the smoke guide plate (2); a lighting module (7) is installed on the airflow driving device; the lighting module (7) is blocked by the airflow driving device in the horizontal direction; and the lighting module (7) is located below the airflow outlet (5) of the airflow driving device; and / or Slide rails are provided on both the left and right sides of the smoke guide plate (2), and the airflow driving device is connected between the slide rails on the left and right sides. The three together form a U-shaped convex edge with an opening arranged on the bottom wall of the smoke guide plate (2) facing the air inlet.

4. The range hood according to claim 2, characterized in that: The airflow driving device is arranged below the smoke guide plate (2) and abuts against the bottom wall of the smoke guide plate (2); a lighting module (7) is installed on the airflow driving device; the lighting module (7) is shielded by the airflow driving device in the horizontal direction; the lighting module (7) is located below the airflow outlet (5) of the airflow driving device; the lighting module (7) is arranged to directly provide lighting for the cooking area below; and / or The airflow driving device is arranged below the smoke guide plate (2) and abuts against the bottom wall of the smoke guide plate (2); a lighting module (7) is installed on the airflow driving device, the lighting module (7) is blocked by the airflow driving device in the horizontal direction, the lighting module (7) is located below the airflow outlet (5) of the airflow driving device, and the lighting module (7) is arranged to emit light toward the bottom wall of the smoke guide plate (2) and provide lighting for the cooking area below after being reflected by the bottom wall of the smoke guide plate (2); and / or The airflow driving device is arranged below the smoke guide plate (2) and is close to the bottom wall of the smoke guide plate (2). A lighting module (7) is installed on the airflow driving device. The lighting module (7) is blocked by the airflow driving device in the horizontal direction. The lighting module (7) is located below the airflow outlet (5) of the airflow driving device. The lighting module (7) is arranged to be suitable for emitting light toward the bottom wall of the smoke guide plate (2) and passing through the wall of the smoke guide plate (2) to form ambient light above the smoke guide plate (2).

5. The range hood according to claim 1, characterized in that: It comprises a driving module, which is configured to drive the smoke guide plate (2) to switch between a first position and a second position; The driving module comprises a motor, a first gear (11) and a rack (13); The rack (13) is arranged on the top wall of the smoke guide plate (2); The motor is configured to drive the first gear (11) to rotate; The rotating first gear (11) drives the rack (13) to move, and the smoke guide plate (2) moves along with the rack (13).

6. The range hood according to claim 5, characterized in that: The smoke guide plate (2) comprises a glass top plate, and the rack (13) is integrally formed on the glass top plate; and / or The invention comprises a second gear (12) connected between the first gear (11) and the rack (13); the diameter of the second gear (12) is larger than the diameter of the first gear (11); the rotating first gear (11) drives the second gear (12) to rotate; and the rotating second gear (12) drives the rack (13) to move.

7. The range hood according to claim 1, characterized in that: It comprises a centrifugal fan (8) and a cyclonic filter device (9) which are arranged in sequence from top to bottom in the housing (1); When the smoke guide plate (2) is located at the first position, the cyclone filter device (9) is located above the smoke guide plate (2); When the smoke guide plate (2) is located at the second position, the airflow driving device is configured to be suitable for delivering an induced airflow to the cyclone filter device (9).

8. The range hood according to claim 7, characterized in that: The cyclone filter device (9) is arranged obliquely in the housing (1); The cyclone filter device (9) comprises a plurality of cyclone ducts arranged side by side; A first exhaust port (10) is provided at one end of the cyclone duct that is tilted upward; The first exhaust port (10) faces the front side wall of the housing (1); An air inlet is arranged on the pipe wall of the cyclone duct, and the air inlet is open toward the air inlet located below it.

9. The range hood according to claim 8, characterized in that: The air flow inlet of the centrifugal fan (8) is spaced apart from the front side wall of the housing (1) to form an air flow channel, and the first exhaust port (10) faces the air flow channel; and / or The bottom of the volute of the centrifugal fan (8) is provided with an inclined section (27), and the inclined section (27) extends obliquely upward toward the front side wall of the housing (1); and / or The first exhaust port (10) is an inclined cutout opening toward the front side wall of the housing member (1); and / or The inclination angle of the cyclone filter device (9) is an acute angle and is greater than or equal to 13°.

10. The range hood according to claim 7, characterized in that: The cyclone filter device (9) is provided with an oil cup (23) support frame suspended at its bottom end.

11. The range hood according to claim 10, characterized in that: The oil cup (23) support frame is provided with a protrusion (24) and is configured to be suitable for spacing adjacently arranged oil cups (23); and / or The oil cup (23) support frame comprises a square frame portion (14) with an opening facing forward, and a stop flange (15) is provided at the bottom edge of the opening of the square frame portion (14); and / or The oil cup (23) support frame comprises a square frame portion (14) with an opening facing forward and a door portion (16) suitable for controlling the opening and closing of the opening of the square frame portion (14); and / or The oil cup (23) support frame is integrally formed with the cyclone filter device (9) or is detachably fixed to the cyclone filter device (9).

12. The range hood according to claim 1, characterized in that: When the smoke guide plate (2) is located at the first position, the housing (1) and the smoke guide plate (2) are both in a rectangular parallelepiped shape as a whole; and / or A slide rail is arranged between the smoke guide plate (2) and the housing (1), the slide rail comprising a guide rail (17) and a movable rail (18), the guide rail (17) being arranged on the housing (1), the movable rail (18) being in a "bow" shape, the movable rail (18) comprising a bow back opening and a bow-shaped opening arranged opposite to each other, the guide rail (17) being embedded in the bow back opening, the end of the airflow driving device being embedded in the bow-shaped opening, and the smoke guide plate (2) being placed on the movable rail (18) and the airflow driving device; and / or The cyclone filter device (9) comprises a plurality of cyclone ducts arranged side by side, an air inlet is provided on the wall of the cyclone duct, the air inlet is open toward the air inlet located below the cyclone duct, the cyclone filter device (9) comprises an integral extension surface, the air inlet is integrally formed on the integral extension surface; and / or The invention comprises a cyclone filter device (9), wherein the cyclone filter device (9) comprises a plurality of cyclone ducts arranged side by side, wherein when the smoke guide plate (2) is located at the second position, the airflow driving device is configured to be suitable for delivering an induced airflow to the cyclone filter device (9), an air inlet is provided on the wall of the cyclone duct, and the air inlet is open toward the air inlet located below the cyclone filter device (9), and the cyclone filter device (9) comprises an integral plane, and the air inlet is integrally formed on the integral plane.

Images