Range hood

Abstract

The present invention provides a range hood, which relates to the technical field of kitchen appliances. The range hood includes a smoke collecting hood, a wind shield assembly and a driving mechanism. The smoke collecting hood has an air inlet. The wind shield assembly includes a left flap and a right flap both mounted on the air inlet. The left flap and the right flap are both provided in multiple pieces and are arranged in parallel along the left and right directions of the range hood. A left air inlet channel is formed between two adjacent left flaps, and a right air inlet channel is formed between two adjacent right flaps. The driving mechanism is connected to the wind shield assembly in a transmission manner, and is used to drive the left flap and / or the right flap to rotate, so that the left air inlet channel and the right air inlet channel are opened and / or closed. The technical problem that the air intake of the air guide plate on the cooking side and the non-cooking side is the same in the prior art, resulting in an unsatisfactory oil fume extraction effect is solved, and the technical effect of improving the oil fume extraction on the cooking side is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a range hood. Background Art

[0002] Range hoods have become one of the indispensable kitchen appliances in modern families. Range hoods work based on the principle of fluid dynamics. A centrifugal fan installed inside the range hood absorbs and exhausts oil smoke, and uses a filter to filter out some grease particles. The centrifugal fan includes a volute, an impeller installed in the volute, and a motor that drives the impeller to rotate. When the impeller rotates, negative pressure suction is generated at the center of the fan, sucking the oil smoke under the range hood into the fan, which is then accelerated by the fan and collected by the volute and guided to be discharged outdoors.

[0003] According to the different air intake forms, range hoods can usually be divided into two categories: top-suction range hoods and side-suction range hoods. Among them, the air inlet of the side-suction range hood is closer to the source of oil smoke, which can effectively shorten the movement distance of oil smoke rising. Since the smoke hood adopts an open design, the process of oil smoke moving upward is easy to escape from the open place into the kitchen space; therefore, people set an air guide plate corresponding to the shape of the air inlet at the air inlet of the smoke hood.

[0004] However, the air intake of the air guide plate in the prior art is the same on the cooking side and the non-cooking side, resulting in an unsatisfactory fume absorption effect. Summary of the invention

[0005] The object of the present invention is to provide a range hood to alleviate the technical problem in the prior art that the air intake amount of the air guide plate on the cooking side and the non-cooking side is the same, resulting in an unsatisfactory range hood extraction effect.

[0006] The present invention provides a range hood, comprising: a fume collecting hood, a wind shielding component and a driving mechanism;

[0007] The smoke collecting hood has an air inlet;

[0008] The wind shield assembly comprises a left flap and a right flap both mounted on the air inlet, wherein the left flap and the right flap are provided in a plurality of pieces and are arranged in parallel along the left and right directions of the range hood; a left air inlet channel is formed between two adjacent left flaps, and a right air inlet channel is formed between two adjacent right flaps;

[0009] The driving mechanism is in driving connection with the wind shield assembly and is used for driving the left flap and / or the right flap to rotate so as to open and / or close the left air inlet channel and the right air inlet channel.

[0010] Furthermore, when the driving mechanism drives the left flap and the right flap to rotate, the rotation directions of the left flap and the right flap are opposite, so that the opening of the left air inlet channel faces left, and the opening of the right air inlet channel faces right.

[0011] Furthermore, the left flap and the right flap are both rotatably connected to the smoke collecting hood via a rotating shaft;

[0012] At least one end of the rotating shafts corresponding to the plurality of left flaps is connected via a first connecting rod, so as to enable the plurality of left flaps to be linked;

[0013] At least one end of the rotating shafts corresponding to the plurality of right flaps is connected via a second connecting rod, so as to enable the plurality of right flaps to be linked.

[0014] Furthermore, the air inlet is provided with a flange extending inwardly in a direction perpendicular to the left-right direction;

[0015] The left flap and the right flap each include a side panel and vertical panels disposed at both ends of the side panel;

[0016] The left flap and the right flap are both located between the opposite flanges, and the flanges are in contact with the corresponding vertical plates;

[0017] The rotating shaft passes through the flanges and the vertical plate to be rotatably connected between the opposite flanges.

[0018] Further, the rotating shaft has a square tube section;

[0019] The vertical plate is provided with a square hole matched with the square tube section.

[0020] Further, the driving mechanism includes a first stepper motor and a second stepper motor;

[0021] The first stepper motor is connected to the first connecting rod through a first steering connecting rod;

[0022] The second stepping motor is connected to the second connecting rod through a second steering connecting rod;

[0023] The first stepper motor and the second stepper motor rotate in opposite directions.

[0024] Furthermore, the driving mechanism includes a third stepping motor, and a linkage rod is provided at the output end of the third stepping motor;

[0025] A first transfer rod is hingedly connected to one end of the linkage rod, and an end of the first transfer rod away from the linkage rod is hingedly connected to one end of the first connecting rod;

[0026] The other end of the linkage rod is hinged with a second transfer rod, and one end of the second transfer rod away from the linkage rod is hinged with one end of the second connecting rod;

[0027] The third stepper motor is used to drive the first transfer rod and the second transfer rod to rotate through the linkage rod, so that the first connecting rod and the second connecting rod respectively drive the left flap and the right flap to flip in the opposite direction.

[0028] Furthermore, the opening angle range of the left flap and the right flap is 0 to 50°;

[0029] When the opening angles of the left flap and the right flap are 0, the board surfaces of the multiple left flaps and the multiple right flaps are coplanar to form a splicing plane.

[0030] Furthermore, the left flap and the right flap are both provided with a plurality of mesh holes.

[0031] Furthermore, the inner surfaces of the left flap and the right flap are both provided with a filter body, and the filter body covers the mesh.

[0032] Furthermore, the air inlet panel of the smoke collecting hood is recessed inward to form a concave platform;

[0033] The air inlet is opened on the bottom surface of the concave platform;

[0034] The range hood further comprises a smoke collecting component, wherein the smoke collecting component comprises an air guide plate capable of opening or closing the air inlet, and the air guide plate is matched with the concave platform.

[0035] Furthermore, the smoke collecting assembly further comprises side smoke collecting plates arranged on the left and right sides of the air guide plate and an electric push rod for driving the air guide plate to flip;

[0036] When the electric push rod drives the air guide plate to open the air inlet, the air guide plate, the side smoke collecting plate and the smoke collecting hood form a smoke collecting chamber.

[0037] Furthermore, a guide hole for the side smoke collecting plate to pass through and a through hole for the telescopic rod of the electric push rod to pass through are provided on the air inlet panel of the smoke collecting hood;

[0038] The electric push rod is installed inside the smoke collecting hood, and the telescopic rod passes through the through hole and is hinged to the air guide plate.

[0039] Beneficial effects:

[0040] The range hood provided by the present invention has a driving mechanism that is transmission-connected to the wind shield assembly, and the driving structure can drive the left flap and / or the right flap to rotate so that the left air inlet channel and the right air inlet channel are opened and / or closed. When the left air inlet channel or the right air inlet channel is opened, oil smoke can enter the smoke collecting hood through the left air inlet channel or the right air inlet channel; specifically, when the left stove is cooking, the left air inlet channel can be opened through the left flap, and when the right stove is cooking, the right air inlet channel can be opened through the right flap, so as to reduce the air intake amount on the non-cooking side, thereby increasing the air intake flow rate of the cooking area and improving the oil smoke extraction effect on the cooking side; when both the left stove and the right stove are cooking, the left air inlet channel and the right air inlet channel can be opened at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 A schematic structural diagram of an air guide plate of a range hood in a closed state provided by an embodiment of the present invention;

[0043] Figure 2 A schematic structural diagram of an air guide plate of a range hood provided by an embodiment of the present invention in an open state, wherein the flap is in an open state;

[0044] Figure 3 A schematic diagram of the structure of the air guide plate of the range hood provided by the embodiment of the present invention in an open state, wherein the flap is in a closed state;

[0045] Figure 4 It is a schematic diagram of the connection structure of the smoke hood and the wind shield assembly;

[0046] Figure 5 One of the structural schematic diagrams of the windshield assembly and the driving mechanism;

[0047] Figure 6 This is a schematic diagram of the internal structure installation of the range hood;

[0048] Figure 7 The figure is a schematic diagram of the installation of a single flap, a fume hood and a stepper motor;

[0049] Figure 8 It is a structural schematic diagram of a single flap;

[0050] Fig. 9 It is an exploded schematic diagram of a single flap;

[0051] Fig.10 The second structural diagram of the windshield assembly and the driving mechanism;

[0052] Fig.11 is a schematic diagram of the connection structure between the third stepping motor and the linkage rod;

[0053] Fig.12 It is a structural schematic diagram of a single left flap, wherein a left mesh hole is provided on the left side panel;

[0054] Fig.13 This is a schematic diagram of the back side of a single flap.

[0055] icon:

[0056] 100-smoke hood; 110-flange; 120-left reinforcing plate; 130-right reinforcing plate; 140-recessed platform; 150-guide hole; 160-through hole;

[0057] 210-left flap; 220-right flap; 230-left air inlet channel; 240-right air inlet channel; 250-rotating shaft; 260-first connecting rod; 270-second connecting rod; 280-shaft end connecting rod; 290-connecting column; 211-left side plate; 212-left vertical plate; 221-right side plate; 222-right vertical plate; 2111-left mesh;

[0058] 300-circlip;

[0059] 410 - first stepper motor; 420 - second stepper motor; 431 - third stepper motor; 432 - linkage rod; 433 - first transfer rod; 434 - second transfer rod;

[0060] 500-filter body;

[0061] 600-smoke collecting assembly; 610-air guide plate; 620-side smoke collecting plate; 630-electric push rod. DETAILED DESCRIPTION

[0062] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0063] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0065] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0066] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0067] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0069] Reference Figures 1 to 3 The present embodiment provides a range hood, comprising a smoke collecting hood 100, a wind shield assembly and a driving mechanism; the smoke collecting hood 100 has an air inlet; the wind shield assembly comprises a left flap 210 and a right flap 220 both mounted on the air inlet, the left flap 210 and the right flap 220 are both provided in multiple pieces and are arranged in parallel along the left and right directions of the range hood; a left air inlet channel 230 is formed between two adjacent left flaps 210, and a right air inlet channel 240 is formed between two adjacent right flaps 220; the driving mechanism is transmission-connected to the wind shield assembly, and is used for driving the left flap 210 and / or the right flap 220 to rotate, so that the left air inlet channel 230 and the right air inlet channel 240 are opened and / or closed.

[0070] In short, the driving mechanism is connected to the windshield assembly in a transmission manner, and is used to drive the left flap 210 to rotate so that the left air inlet channel 230 is opened and the right air inlet channel 240 is closed or slightly opened; or, it is used to drive the right flap 220 to rotate so that the right air inlet channel 240 is opened and the left air inlet channel 230 is closed or slightly opened; or, both the left air inlet channel 230 and the right air inlet channel 240 are opened (see Figure 2 ); or, the left air inlet channel 230 and the right air inlet channel 240 are both closed (see Figure 3 ).

[0071] The present invention provides a range hood, wherein a driving mechanism is transmission-connected to a wind shield assembly, and the driving structure can drive a left flap 210 and / or a right flap 220 to rotate so as to open and / or close a left air inlet channel 230 and a right air inlet channel 240. When the left air inlet channel 230 or the right air inlet channel 240 is opened, oil smoke can enter the smoke collecting hood 100 through the left air inlet channel 230 or the right air inlet channel 240. Specifically, when the left stove is cooking, the left air inlet channel 230 can be opened through the left flap 210, and when the right stove is cooking, the right air inlet channel 240 can be opened through the right flap 220, so as to reduce the air intake on the non-cooking side, thereby increasing the air intake flow rate in the cooking zone and improving the oil smoke absorbing effect on the cooking side. When both the left stove and the right stove are cooking, the left air inlet channel 230 and the right air inlet channel 240 can be opened at the same time.

[0072] In addition, by controlling the rotation angle of the left flap 210 and the right flap 220, the air intake volume of the left air inlet channel 230 and the right air inlet channel 240 can be adjusted. For example, in the stir-fry cooking state, the rotation angle of the left flap 210 or the right flap 220 can be maximized.

[0073] In addition, since the flap on the non-cooking side is not opened or opened at a small angle, the wind noise diffused from the fan will be shielded by the flap, and the noise transmitted to the outside will be reduced accordingly, so the noise of the entire range hood will be reduced.

[0074] Specifically, the number and size of the left flap 210 and the right flap 220 can be reasonably set according to the size of the left and right air inlets.

[0075] In this embodiment, the left flap 210 and the right flap 220 can be both provided with three, four, five, six or more pieces.

[0076] Reference Figure 4When the driving mechanism drives the left flap 210 and the right flap 220 to rotate, the left flap 210 and the right flap 220 rotate in opposite directions, so that the opening of the left air inlet channel 230 faces left, and the opening of the right air inlet channel 240 faces right. With this arrangement, left or right air intake can be achieved according to the air intake characteristics of the side-suction range hood. At the same time, the single-side air intake volume when a small gear (such as steaming) is used is increased, thereby improving the fume extraction effect.

[0077] It should be noted that when the flaps are opened, the flaps remain parallel to each other, forming air inlet channels corresponding to the pots on the left and right stoves. When the oil smoke rises, the air inlet channels play a drainage role.

[0078] Reference Figure 5 , the left flap 210 and the right flap 220 are both rotatably connected to the smoke hood 100 via the rotating shaft 250; at least one end of the rotating shaft 250 corresponding to the multiple left flaps 210 is connected via a first connecting rod 260, which is used to link the multiple left flaps 210; at least one end of the rotating shaft 250 corresponding to the multiple right flaps 220 is connected via a second connecting rod 270, which is used to link the multiple right flaps 220. Such an arrangement can reduce the number of power sources, and there is no need for each flap to correspond to a power source; at the same time, the multiple left flaps 210 or the multiple right flaps 220 can be linked respectively, which can ensure that the rotation speed of the flaps is consistent. At the same time, the air duct size of the left air inlet channel 230 or the right air inlet channel 240 is consistent, and the air inlet pressure is consistent, so that the air intake is more uniform, and the noise will not increase or the smoke extraction effect of the range hood will not be reduced due to excessive local air inlet pressure.

[0079] In this embodiment, one end of the rotating shaft 250 corresponding to the plurality of left flaps 210 is connected via a first connecting rod 260 ; and the rotating shaft 250 corresponding to the plurality of right flaps 220 is connected via at least a second connecting rod 270 .

[0080] In other embodiments, the two ends of the rotating shaft 250 may be connected via the first connecting rod 260 or the second connecting rod 270 respectively.

[0081] Further, see Figures 6 to 8 , a flange 110 is provided extending inwardly at the air inlet in a direction perpendicular to the left and right directions; the left flap 210 and the right flap 220 both include side panels and vertical panels arranged at both ends of the side panels; the left flap 210 and the right flap 220 are both located between the opposite flanges 110, and the flanges 110 are abutted against the corresponding vertical panels; the rotating shaft 250 passes through the flange 110 on one side, the vertical panel and the flange 110 on the other side in sequence; one end of the rotating shaft 250 is fixedly connected to an axial end connecting rod 280, and a connecting column 290 is provided on the axial end connecting rod 280, and the first connecting rod 260 and the second connecting rod 270 are respectively fixedly sleeved on the corresponding multiple connecting columns 290. With such a configuration, the flap can be firmly mounted on the smoke hood 100, and the disassembly and assembly of the flap is convenient.

[0082] Specifically, the left flap 210 includes a left side panel 211 and left vertical panels 212 disposed at both ends of the left side panel 211 ; the right flap 220 includes a right side panel 221 and right vertical panels 222 disposed at both ends of the right side panel 221 .

[0083] The left side plate 211 and the right side plate 221 are both rectangular plates, and the left vertical plate 212 and the right vertical plate 222 are both triangular plates.

[0084] Optionally, the left side panel 211 and the left vertical panel 212 may be integrally provided; the right side panel 221 and the right vertical panel 222 may be integrally provided.

[0085] Further, see Figure 5 and Figure 8 A retaining spring 300 is fixedly sleeved on the end of the connecting column 290 , and the retaining spring 300 is used to relatively fix the first connecting rod 260 or the second connecting rod 270 to the corresponding connecting column 290 .

[0086] Reference Fig. 9 The rotating shaft 250 has a square tube section; a square hole matching the square tube section is opened on the vertical plate, and the square shape mainly serves as a direction restriction so that the use effect or rotation angle of the flap will not be reduced due to relative rotation between the rotating shaft 250 and the flap.

[0087] Specifically, the middle part of the rotating shaft 250 is a square tube section, and the head of the rotating shaft 250 is round. The circle mainly plays a steering role. A connecting head is set at the tail of the rotating shaft 250. The rotating shaft 250 first passes through the large round hole on the flange at the lower end of the smoke hood air inlet, then passes through the entire flap, and finally passes through the small round hole on the flange at the upper end of the smoke hood air inlet. There is a reserved card slot at the round end of the rotating shaft head, which is longitudinally limited by the retaining spring 300 to connect a single flap to the smoke hood, and so on. Several flaps are connected to the smoke hood. The tail end of the rotating shaft 250 is connected to the first connecting rod 260 or the second connecting rod 270. The first connecting rod 260 is connected to the left flap 210, and the second connecting rod 270 is connected to the right flap 220. Similarly, a slot is set at the connection between the tail end of the rotating shaft 250 and the first connecting rod 260 or the second connecting rod 270. After the first connecting rod 260 or the second connecting rod 270 is inserted into the connecting head of the rotating shaft 250, it is limited by the retaining spring 300.

[0088] Furthermore, a round boss may be provided on the outer edge of the square hole.

[0089] In this embodiment, the driving mechanism may have various forms, as described below.

[0090] In one embodiment of the present application, referring to Figure 5 and Figure 6The driving mechanism includes a first stepper motor 410 and a second stepper motor 420; the first stepper motor 410 is connected to the first connecting rod 260 through a first steering connecting rod; the second stepper motor 420 is connected to the second connecting rod 270 through a second steering connecting rod; the first stepper motor 410 and the second stepper motor 420 have opposite rotation directions. The advantage of such an arrangement is that the left flap 210 and the right flap 220 may not be opened at the same time to reduce the air intake on the non-cooking side.

[0091] Specifically, the first stepper motor 410 and the second stepper motor 420 are arranged in the middle of the left and right flaps. The driving shafts of the first stepper motor 410 and the second stepper motor 420 can rotate clockwise or counterclockwise through a program. A steering link is arranged on the output shaft head of the stepper motor. The steering link is hinged to the corresponding link. Finally, the stepper motor is fixed on the bracket to form a complete rotating mechanism.

[0092] In actual operation, the first stepper motor 410 rotates, and the corresponding left flap 210 flips accordingly, and the rotation angle and direction are the same as the rotation angle and direction of the first stepper motor 410. The second stepper motor 420 rotates, and the corresponding right flap 220 flips accordingly, and the rotation angle and direction are the same as the rotation angle and direction of the second stepper motor 420. When the left stove is in use, the first stepper motor 410 starts to rotate, and the left flap 210 rotates and opens, and the opening angle is 0 to 50 degrees, and generally 45 degrees can be opened. At the same time, the right flap 220 is not opened, or slightly opened, reducing the air intake of the non-cooking area, thereby increasing the air intake flow rate of the cooking area and improving the oil fume extraction effect on the cooking side. On the non-cooking side, since the flap is not opened or the opening angle is small, the wind noise diffused at the fan will be shielded by the flap, and the noise transmitted to the outside will be reduced accordingly, so the noise of the range hood will also be reduced. Conversely, when the right stove is in use, the second stepper motor 420 operates, and the principle is the same as the left side, which will not be repeated here. Therefore, this embodiment can reasonably distribute the air intake of the left and right air inlets, achieve low noise, high efficiency in oil fume extraction, and reduce energy consumption. Furthermore, if both left and right cookers are in use, the first stepper motor 410 and the second stepper motor 420 are both running, the left and right flaps are both open, and the air intake on the left and right sides is balanced, ensuring the oil fume extraction effect on the left and right sides.

[0093] In another embodiment of the present application, referring to Fig.10 and Fig.11The driving mechanism includes a third stepper motor 431, and a linkage rod 432 is provided at the output end of the third stepper motor 431; a first transfer rod 433 is hinged at one end of the linkage rod 432, and an end of the first transfer rod 433 away from the linkage rod 432 is hinged to one end of the first connecting rod 260; a second transfer rod 434 is hinged at the other end of the linkage rod 432, and an end of the second transfer rod 434 away from the linkage rod 432 is hinged to one end of the second connecting rod 270; the stepper motor is used to drive the first transfer rod 433 and the second transfer rod 434 to rotate through the linkage rod 432, so that the first connecting rod 260 and the second connecting rod 270 respectively drive the left flap 210 and the right flap 220 to flip in the opposite direction.

[0094] Specifically, the rotation direction of the left flap 210 is the same as the rotation direction of the third stepper motor 431, and the rotation direction of the right flap 220 is opposite to the rotation direction of the third stepper motor 431, that is, when the flaps are opened, the left flap 210 opens to the left and the right flap 220 opens to the right.

[0095] In this embodiment, the installation position of the stepper motor is not limited to the middle position of the range hood in the left-right direction, but can also be on the left and right sides, depending on the space of the actual product.

[0096] In this embodiment, the opening angle range of the left flap 210 and the right flap 220 is 0-50°, for example, 0°, 10°, 20°, 30°, 40° and 50°, and generally 45°; when the opening angle of the left flap 210 and the right flap 220 is 0, the board surfaces of the multiple left flaps 210 and the multiple right flaps 220 are coplanar to form a splicing plane (see Figure 3 ).

[0097] After pressing the cleaning button, since the flap is in a flat state (i.e. closed state), it is parallel to the air inlet chamber of the smoke collector, forming a large plane. The user can clean the surface of the smoke collector. Since it is a whole plane, cleaning is more convenient. At the same time, the oil and water stains generated during cleaning will flow along the oil leakage hole of the smoke collector to the oil cup.

[0098] Furthermore, a plurality of mesh holes are provided on the left flap 210 and the right flap 220. If cooking is performed at a low gear, the stepper motor does not work and the flap does not rotate, so that oil smoke can be sucked and exhausted through the mesh holes. If cooking is performed at a high gear, the flap is opened, and the main air inlet is the parallel air inlet channel between the flaps, the mesh holes can also serve to assist the air intake.

[0099] Specifically, the left flap 210 and the right flap 220 may both be rectangular plates, and the plurality of meshes may be arranged in a rectangular array, or may be arranged evenly or unevenly, or may be arranged in one or more annular arrays.

[0100] Optionally, the mesh may be a diamond-shaped mesh.

[0101] Specifically, refer to Fig.12 , there are multiple left mesh holes 2111 on the left side plate 211 of the left flip plate 210.

[0102] Further, refer to Fig.13 The inner surfaces of the left flap 210 and the right flap 220 are both provided with a filter body 500, and the filter body 500 covers the mesh.

[0103] Optionally, the filter body 500 may be filter cotton; the filter cotton can filter the grease in the oil smoke and, at the same time, isolate the wind noise at the fan, thereby reducing noise and improving grease separation.

[0104] In this embodiment, the filter body 500 is snap-connected to the left flap 210 or the right flap 220 to facilitate regular replacement or cleaning, which is more economical.

[0105] Specifically, the edge of the left flap 210 or the right flap 220 is provided with a plurality of buckles; the filter body 500 is clamped between the corresponding plurality of buckles and is in close contact with the plate surface of the left flap 210 or the right flap 220 .

[0106] In other embodiments, the filter body 500 may also be fixed to one side of the left flap 210 or the right flap 220 by bonding, threading, or the like.

[0107] Reference Figure 2 The air inlet panel of the smoke hood 100 is recessed inward to form a recessed platform 140; the air inlet is opened on the bottom surface of the recessed platform 140; the range hood also includes a smoke collecting component 600, and the smoke collecting component 600 includes an air guide plate 610 that can open or close the air inlet, and the air guide plate 610 is adapted to the recessed platform 140. With such an arrangement, after the air guide plate 610 is covered, the front panel of the range hood forms a plane, which is more beautiful.

[0108] Please continue to refer to Figure 2 The smoke collecting assembly 600 also includes side smoke collecting plates 620 arranged on the left and right sides of the air guide plate 610 and an electric push rod 630 for driving the air guide plate 610 to flip; when the electric push rod 630 drives the air guide plate 610 to open the air inlet, the air guide plate 610, the side smoke collecting plates 620 and the smoke collecting hood 100 form a smoke collecting chamber.

[0109] After the air guide plate 610 is opened by the electric push rod 630, the side smoke collecting plates 620 on both sides of the air guide plate 610 also rise up, forming an area covered on three sides with the smoke collecting hood. If the low gear is used, the rising oil smoke will stay here for a short time and will not escape to the sides, so as to solve the smoke leakage problem.

[0110] Optionally, the electric push rods 630 may be provided in one or two groups. Figure 6A left reinforcing plate 120 and a right reinforcing plate 130 are provided inside the smoke hood 100, wherein a group of electric push rods 630 can be arranged on the left reinforcing plate 120 or the right reinforcing plate 130; two groups of electric push rods 630 can be arranged on the left reinforcing plate 120 and the right reinforcing plate 130 respectively.

[0111] In this embodiment, a group of electric push rods 630 are installed on the left reinforcing plate 120 or the right reinforcing plate 130 through pins, and can also be installed on the side or top surface of the smoke hood 100. Please refer to Figure 2 The air inlet panel of the smoke collecting hood 100 is provided with a guide hole 150 for the side smoke collecting plate 620 to pass through and a through hole 160 for the telescopic rod of the electric push rod 630 to pass through; the electric push rod 630 is installed inside the smoke collecting hood 100, and the telescopic rod passes through the through hole 160 and is hinged to the air guide plate 610.

[0112] Side smoke collecting plates 620 are arranged on both sides of the air guide plate 610. When the air guide plate 610 is opened, it forms a smoke collecting cavity surrounded on three sides with the smoke collecting hood 100. When it is closed, it is hidden inside the smoke collecting hood 100. An air inlet is arranged in the middle of the smoke collecting hood 100, which is divided into a left air inlet and a right air inlet. Flap plates are respectively arranged at the left and right air inlets. The flap plates are driven by a stepper motor. The stepper motor is divided into two left and right ones, each controlling one side. The stepper motor can be fixed on a bracket inside the smoke collecting hood 100.

[0113] Optionally, the through hole 160 may be an elliptical through hole 160. The telescopic rod of the electric push rod 630 passes through the elliptical through hole 160 and is hinged to the air guide plate 610.

[0114] The range hood may be a side-suction range hood, which further includes a casing assembly and an oil cup, wherein a fan assembly is arranged in the casing assembly, and the fan assembly may adopt existing technology, which will not be described in detail here.

[0115] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: include: A smoke collecting hood (100), a wind shield assembly and a driving mechanism; The smoke collecting hood (100) has an air inlet; The wind shield assembly comprises a left flap (210) and a right flap (220) both mounted on the air inlet; the left flap (210) and the right flap (220) are both provided in a plurality of pieces and are arranged in parallel along the left and right directions of the range hood; a left air inlet channel (230) is formed between two adjacent left flaps (210), and a right air inlet channel (240) is formed between two adjacent right flaps (220); The driving mechanism is in transmission connection with the wind shield assembly, and is used to drive the left flap (210) and / or the right flap (220) to rotate, so as to open and / or close the left air inlet channel (230) and the right air inlet channel (240); The left flap (210) and the right flap (220) are both provided with a plurality of mesh holes; The inner surfaces of the left flap (210) and the right flap (220) are both provided with a filter body (500), and the filter body (500) covers the mesh; The edge of the left flap (210) or the right flap (220) is provided with a plurality of buckles; the filter body (500) is clamped between the corresponding plurality of buckles and is in close contact with the plate surface of the left flap (210) or the right flap (220); The left flap (210) and the right flap (220) are both rotatably connected to the smoke collecting hood (100) via a rotating shaft (250); At least one end of the rotating shafts (250) corresponding to the plurality of left flaps (210) is connected via a first connecting rod (260) to enable the plurality of left flaps (210) to be linked; At least one end of the rotating shafts (250) corresponding to the plurality of right flaps (220) is connected via a second connecting rod (270) to enable the plurality of right flaps (220) to be linked; The driving mechanism comprises a third stepping motor (431), the installation position of the third stepping motor (431) is the middle position of the range hood along the left-right direction, and the output end of the third stepping motor (431) is provided with a linkage rod (432); One end of the linkage rod (432) is hinged with a first transfer rod (433), and one end of the first transfer rod (433) away from the linkage rod (432) is hinged with one end of the first connecting rod (260); The other end of the linkage rod (432) is hinged with a second transfer rod (434), and one end of the second transfer rod (434) away from the linkage rod (432) is hinged with one end of the second connecting rod (270); The third stepper motor (431) is used to drive the first transfer rod (433) and the second transfer rod (434) to rotate through the linkage rod (432), so that the first connecting rod (260) and the second connecting rod (270) respectively drive the left flap (210) and the right flap (220) to flip in the opposite direction.

2. The range hood according to claim 1, characterized in that: When the driving mechanism drives the left flap (210) and the right flap (220) to rotate, the left flap (210) and the right flap (220) rotate in opposite directions, so that the opening of the left air inlet channel (230) faces left, and the opening of the right air inlet channel (240) faces right.

3. The range hood according to claim 2, characterized in that: The air inlet is provided with a flange (110) extending inwardly in a direction perpendicular to the left-right direction; The left flap (210) and the right flap (220) both include side panels and vertical panels arranged at both ends of the side panels; The left flap (210) and the right flap (220) are both located between the opposite flanges (110), and the flanges (110) are in contact with the corresponding vertical plates; The rotating shaft (250) passes through the flange (110) and the vertical plate to be rotatably connected between the opposite flanges (110).

4. The range hood according to claim 3, characterized in that: The rotating shaft (250) has a square tube section; The vertical plate is provided with a square hole matched with the square tube section.

5. The range hood according to any one of claims 1 to 4, characterized in that: The opening angle range of the left flap (210) and the right flap (220) is 0 to 50°; When the opening angles of the left flap (210) and the right flap (220) are 0, the board surfaces of the plurality of left flaps (210) and the plurality of right flaps (220) are coplanar to form a splicing plane.

6. The range hood according to any one of claims 1 to 4, characterized in that: The air inlet panel of the smoke collecting hood (100) is recessed inwardly to form a concave platform (140); The air inlet is opened on the bottom surface of the concave platform (140); The range hood further comprises a smoke collecting component (600), wherein the smoke collecting component (600) comprises an air guide plate (610) capable of opening or closing the air inlet, and the air guide plate (610) is adapted to the concave platform (140).

7. The range hood according to claim 6, characterized in that: The smoke collecting assembly (600) further comprises side smoke collecting plates (620) arranged on the left and right sides of the air guide plate (610) and an electric push rod (630) for driving the air guide plate (610) to flip; When the electric push rod (630) drives the air guide plate (610) to open the air inlet, the air guide plate (610), the side smoke collecting plate (620) and the smoke collecting hood (100) form a smoke collecting chamber.

8. The range hood according to claim 7, characterized in that: The air inlet panel of the smoke collecting hood (100) is provided with a guide hole (150) for the side smoke collecting plate (620) to pass through and a through hole (160) for the telescopic rod of the electric push rod (630) to pass through; The electric push rod (630) is installed inside the smoke collecting hood (100), and the telescopic rod passes through the through hole (160) and is hinged to the air guide plate (610).

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