Smoke collection mechanism and range hood

Abstract

The present invention provides a smoke collection mechanism and a range hood, relating to the technical field of kitchen appliances. The smoke collection mechanism comprises a smoke hood and an adjustment mechanism. The adjustment mechanism includes at least two adjustment plates, which are located at the smoke inlet of the smoke hood. Adjacent adjustment plates are staggered along the flow direction of the oil smoke to form a rapid flow channel for the oil smoke. This invention solves the technical problem of slow smoke extraction in existing range hoods when the power is constant.

Description

Technical Field

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

[0002] The range hood is installed above the kitchen stove to quickly extract the waste from stove combustion and the fumes harmful to the human body generated during cooking, and discharge them outdoors, reducing pollution, purifying the air, and providing safety protection against poison and explosion.

[0003] Range hoods are equipped with fume hoods. When the range hood's fan rotates at high speed, a negative pressure zone is formed above the hood, which contains oil fumes that cannot be exhausted in time. However, because the cross-sectional dimensions of conventional fume hoods are fixed, the fume extraction rate is slow when the range hood power is constant. Summary of the Invention

[0004] The object of the present invention is to provide a smoke collection mechanism and a range hood to alleviate the technical problem of slow smoke extraction speed in the range hoods in the prior art.

[0005] In a first aspect, the smoke collection mechanism provided by the present invention comprises: a smoke collection hood and an adjustment mechanism;

[0006] The adjustment mechanism includes at least two adjustment plates, and the adjustment plates are distributed at the smoke inlet of the smoke collection hood;

[0007] The adjacent regulating plates are staggered along the flow direction of the oil smoke to form a rapid flow channel for the oil smoke to pass through.

[0008] Optionally, the orthographic projections of adjacent adjustment plates in the horizontal plane partially overlap.

[0009] Optionally, the plurality of adjustment plates include a first adjustment plate and a second adjustment plate, and the first adjustment plate and the second adjustment plate are distributed in the left-right direction.

[0010] Optionally, the smoke collecting hood includes a first smoke collecting chamber and a second smoke collecting chamber distributed in the left-right direction, and the positions of the first adjustment plate and the second adjustment plate are adjustable to adjust the negative pressure value in the first smoke collecting chamber and / or the second smoke collecting chamber.

[0011] Optionally, the first adjustment plate and the second adjustment plate are both detachably connected to the fume hood to adjust the distance between the first adjustment plate and / or the second adjustment plate and the top wall of the fume hood.

[0012] Optionally, the first end of the first adjustment plate is detachably connected to the inner wall of the smoke collection hood via a first buckle assembly, and / or;

[0013] The first end of the second adjustment plate is detachably connected to the inner wall of the smoke collecting hood via a second buckle assembly.

[0014] Optionally, the first buckle assembly includes a first pin and a plurality of groups of first sockets, wherein the first pin is provided at the first end of the first adjustment plate, and the plurality of groups of first sockets are provided on the inner wall of the smoke hood and spaced apart in the vertical direction, and the first pin is inserted into the first sockets;

[0015] The second buckle assembly includes a second pin and multiple groups of second sockets, the second pin is arranged at the first end of the second adjustment plate, the multiple groups of second sockets are arranged on the inner wall of the smoke hood and are spaced apart in the vertical direction, and the second pin is inserted into the second socket.

[0016] Optionally, the first socket and the second socket are both provided on the rear wall of the smoke hood;

[0017] A first bracket is provided at the second end of the first adjustment plate, and a second bracket is provided at the second end of the second adjustment plate. Both the first bracket and the second bracket are detachably connected to the smoke collecting hood.

[0018] Optionally, the top wall of the smoke hood is provided with a first mounting hole and a second mounting hole;

[0019] The first bracket is connected to the smoke collecting hood through the first mounting hole, and the second bracket is connected to the smoke collecting hood through the second mounting hole.

[0020] Optionally, the first bracket and / or the second bracket is a retractable structure.

[0021] Optionally, the first bracket and the second bracket both include a first plate and a second plate, the first plate and the second plate are movably connected, and a locking member is provided therebetween.

[0022] Optionally, the first adjustment plate and the second adjustment plate are both slidably matched with the smoke collecting hood along the left-right direction.

[0023] Optionally, the adjustment mechanism further includes a driving assembly, which is in transmission connection with the first adjustment plate and the second adjustment plate to drive the first adjustment plate and the second adjustment plate to exchange positions.

[0024] Optionally, the driving assembly includes a motor, a gear and a rack, and the first adjustment plate and the second adjustment plate are both equipped with the rack, and the rack is extended in the left-right direction;

[0025] The motor is in transmission connection with the gear, and the gear is meshed with the rack.

[0026] Optionally, the number of the motor and the number of the gear are both one, the rack on the first adjustment plate and the rack on the second adjustment plate are arranged opposite to each other, and the gear is located between the two racks;

[0027] Alternatively, there are two motors and two gears, and the two motors are connected to the two gears in a one-to-one transmission manner; one of the gears is engaged with the rack on the first adjustment plate, and the other gear is engaged with the rack on the second adjustment plate.

[0028] Optionally, a guide rail is provided on the smoke collecting hood, and the first adjustment plate and the second adjustment plate are both slidably engaged with the guide rail.

[0029] Optionally, the adjustment plate includes blades, the adjustment mechanism further includes a central shaft, a plurality of the blades are mounted on the central shaft and distributed along the circumference of the central shaft, and adjacent blades are staggered along the axial direction of the central shaft.

[0030] Optionally, the adjustment mechanism further includes a drive assembly, which is in transmission connection with the central shaft.

[0031] Optionally, the central shaft cooperates with the plurality of blades to form an impeller, and the impellers are provided in plurality, the plurality of impellers including a first impeller and a second impeller, the smoke inlet of the smoke collecting hood including a first smoke inlet and a second smoke inlet, and the first smoke inlet and the second smoke inlet are spaced apart in the left-right direction;

[0032] The first impeller is installed at the first smoke inlet, and the second impeller is installed at the second smoke inlet;

[0033] The driving assembly is respectively connected to the first impeller and the second impeller in a transmission manner.

[0034] In a second aspect, the range hood provided by the present invention includes any of the smoke collection mechanisms described above.

[0035] Based on the above technical solutions, the technical effects achieved by the present invention are analyzed as follows:

[0036] The smoke collection mechanism provided by the present invention includes a smoke hood and an adjustment mechanism. The adjustment mechanism includes at least two adjustment plates, which are distributed at the smoke inlet of the smoke hood. Adjacent adjustment plates are staggered along the flow direction of the oil smoke to form a rapid flow channel for the oil smoke to pass through. The rapid flow channel between the adjacent adjustment plates is a negative pressure area. When external oil smoke flows into the rapid flow channel, the cross-sectional area of ​​the rapid flow channel is smaller than the cross-sectional area of ​​the external space. According to the Venturi principle, the oil smoke flows faster when passing through the rapid flow channel, thereby accelerating the speed at which the oil smoke enters the smoke hood and improving extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 A cross section of a range hood provided by an embodiment of the present invention Figure 1 ;

[0039] Figure 2 A three-dimensional diagram of a smoke collection hood provided in an embodiment of the present invention Figure 1 ;

[0040] Figure 3 A three-dimensional schematic diagram of an adjustment plate provided in an embodiment of the present invention;

[0041] Figure 4 A side view of a range hood provided by an embodiment of the present invention;

[0042] Figure 5 A cross section of a range hood provided by an embodiment of the present invention Figure 2 ;

[0043] Figure 6 A cross section of a range hood provided by an embodiment of the present invention Figure 3 ;

[0044] Figure 7 A cross section of a range hood provided by an embodiment of the present invention Figure 4 ;

[0045] Figure 8 A transmission schematic diagram of a drive assembly provided in an embodiment of the present invention;

[0046] Figure 9 A cross section of a range hood provided by an embodiment of the present invention Figure 5 ;

[0047] Figure 10 A three-dimensional diagram of a smoke collection hood provided in an embodiment of the present invention Figure 2 ;

[0048] Figure 11 A schematic diagram of an impeller provided in an embodiment of the present invention.

[0049] icon:

[0050] 100-smoke hood; 150-first mounting hole; 160-second mounting hole; 200-adjustment mechanism; 220-rapid flow channel; 210-adjustment plate; 250-first adjustment plate; 251-first bracket; 260-second adjustment plate; 261-second bracket; 252-first pin; 130-first socket; 262-second pin; 140-second socket; 230-drive assembly; 231-motor; 233-gear; 234-rack; 120-guide rail; 211-blade; 240-center axis; 270-first impeller; 280-second impeller; 310-first stove; 320-second stove; 340-air duct system; 170-first smoke inlet; 180-second smoke inlet. DETAILED DESCRIPTION

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only 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 herein can be arranged and designed in various different configurations.

[0052] 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 as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are intended to fall within the scope of protection of the present invention.

[0053] 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, it does not need to be further defined or explained in subsequent drawings.

[0054] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0055] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0056] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0057] Example 1

[0058] The smoke collection mechanism provided by the present embodiment includes a smoke hood 100 and an adjustment mechanism 200. The adjustment mechanism 200 includes at least two adjustment plates 210, which are located at the smoke inlet of the smoke hood 100. Adjacent adjustment plates 210 are staggered along the flow direction of the oil smoke to form a rapid flow channel 220 for the oil smoke to pass through. The oil smoke flow direction refers to the direction in which the oil smoke generated during cooking flows from the stove into the smoke hood 100. Generally, cooking smoke flows from bottom to top and is drawn into the smoke hood 100 by the range hood's air duct system. The rapid flow channel 220 formed by the staggered arrangement of adjacent adjustment plates 210 along the flow direction of the oil smoke creates a negative pressure zone. When external oil smoke flows into the rapid flow channel 220, the cross-sectional area of ​​the rapid flow channel 220 is smaller than that of the external space. According to the Venturi principle, the oil smoke flows faster as it passes through the rapid flow channel 220, thereby accelerating the speed at which the oil smoke enters the smoke hood 100 and improving extraction efficiency.

[0059] The shape and structure of the smoke collection mechanism are described in detail below:

[0060] In this application, the left-right direction, up-down direction, and front-back direction mentioned herein refer to the directions from the perspective of an operator when the range hood is installed above the cooker and the operator faces the range hood.

[0061] In the optional solutions of the embodiments of the present invention, please refer to Figure 1 , the orthographic projections of adjacent adjustment plates 210 in the horizontal plane partially overlap.

[0062] When the oil in the air duct system 340 drips downward, the adjustment plate 210 can block the dripping oil to prevent it from dripping onto the cooker, and adjacent adjustment plates 210 partially overlap to prevent oil from dripping onto the cooker from the gaps between adjacent adjustment plates 210.

[0063] In an optional solution of the embodiment of the present invention, the plurality of adjustment plates 210 include a first adjustment plate 250 and a second adjustment plate 260 , and the first adjustment plate 250 and the second adjustment plate 260 are distributed along the left-right direction.

[0064] Specifically, the first adjustment plate 250 and the second adjustment plate 260 are both rectangular in shape, with the lengths of the first adjustment plate 250 and the second adjustment plate 260 arranged along the front-to-back direction of the fume hood 100. The planes on which the first adjustment plate 250 and the second adjustment plate 260 lie are both parallel to the top wall of the fume hood 100, or are arranged at an acute angle to the top wall of the fume hood 100. The side walls of the first adjustment plate 250 and the second adjustment plate 260 are both spaced apart from the side walls of the fume hood 100.

[0065] The first adjustment plate 250 and the second adjustment plate 260 are distributed in the left and right directions. The oil smoke generated during the cooking process can not only enter the smoke hood 100 from the rapid flow channel 220 between the first adjustment plate 250 and the second adjustment plate 260, but also enter the smoke hood 100 through the gap between the first adjustment plate 250 and the side wall of the smoke hood 100 and the gap between the second adjustment plate 260 and the side wall of the smoke hood 100. Because the cross-sectional area of ​​the rapid flow channel 220 and the gap between the first adjustment plate 250 and the second adjustment plate 260 and the side wall of the smoke hood 100 is smaller than the cross-sectional area of ​​the external space, according to the Venturi principle, the flow speed of the oil smoke is accelerated when passing through the rapid flow channel 220 and the gap between the first adjustment plate 250 and the second adjustment plate 260 and the side wall of the smoke hood 100, thereby accelerating the speed at which the oil smoke enters the smoke hood 100 and improving the smoking efficiency.

[0066] In an optional solution of the embodiment of the present invention, the smoke hood 100 includes a first smoke collecting chamber and a second smoke collecting chamber distributed in the left and right directions, and the first adjustment plate 250 and the second adjustment plate 260 are adjustable to adjust the negative pressure value in the first smoke collecting chamber and / or the second smoke collecting chamber.

[0067] Specifically, the smoke hood 100 includes a first smoke collection chamber and a second smoke collection chamber arranged in a horizontal direction. The first and second smoke collection chambers correspond one-to-one with the first and second cooking appliances 310 and 320 of the range hood. The first and second adjustment plates 250 and 260 are adjustable in the vertical or horizontal direction to adjust the negative pressure within the first and / or second smoke collection chambers.

[0068] Optionally, the first adjustment plate 250 and the second adjustment plate 260 are adjustable in the vertical direction, and the first adjustment plate 250 and the second adjustment plate 260 are arranged in a one-to-one correspondence with the first smoke collecting chamber and the second smoke collecting chamber. When using the first cooker 310, please refer to Figure 7The distance between the first adjustment plate 250 and the top wall of the smoke hood 100 is greater than the distance between the second adjustment plate 260 and the top wall of the smoke hood 100, which increases the negative pressure in the first smoke collection chamber and is equivalent to lowering the smoke inlet corresponding to the first cooktop 310, thereby facilitating the collection of oil smoke generated by the first cooktop 310. When using the second cooktop 320, please refer to Figure 6 The distance between the first adjustment plate 250 and the top wall of the smoke collection hood 100 is smaller than the distance between the second adjustment plate 260 and the top wall of the smoke collection hood 100, so that the negative pressure in the second smoke collection chamber is greater, and it is equivalent to lowering the smoke inlet corresponding to the second cooktop 320, which is conducive to collecting the oil smoke generated by the second cooktop 320.

[0069] Optionally, the first adjustment plate 250 and the second adjustment plate 260 are adjustable in the left-right direction, and the distance between the first adjustment plate 250 and the top wall of the smoke hood 100 is greater than the distance between the second adjustment plate 260 and the top wall of the smoke hood 100. When using the first cooker 310, please refer to Figure 7 , so that the first regulating plate 250 is located above the first cooktop 310, and the second regulating plate 260 is located above the second cooktop 320. The distance between the first regulating plate 250 and the top wall of the smoke collecting hood 100 is larger, which increases the negative pressure in the first smoke collecting chamber and is equivalent to lowering the smoke inlet corresponding to the first cooktop 310, thereby facilitating the collection of oil smoke generated by the first cooktop 310. When using the second cooktop 320, please refer to Figure 6 The first and second adjustment plates 250 and 260 move left and right, positioning the first adjustment plate 250 above the second cooktop 320 and the second adjustment plate 260 above the first cooktop 310. This increases the distance between the first adjustment plate 250 and the top wall of the fume hood 100, increasing the negative pressure within the second fume collection chamber and lowering the fume inlet corresponding to the second cooktop 320, thereby facilitating the collection of fumes from the second cooktop 320.

[0070] The first adjustment plate 250 and the second adjustment plate 260 are adjustable in the vertical direction or the horizontal direction to adjust the negative pressure value in the first smoke collecting chamber and / or the second smoke collecting chamber, thereby achieving targeted collection of oil smoke generated by the first cooktop 310 or the second cooktop 320, further improving the extraction efficiency.

[0071] As an embodiment, the first adjustment plate 250 and the second adjustment plate 260 are both detachably connected to the smoke hood 100 to adjust the distance between the first adjustment plate 250 and / or the second adjustment plate 260 and the top wall of the smoke hood 100. This allows the first adjustment plate 250 to be adjusted vertically alone, the second adjustment plate 260 to be adjusted vertically alone, or both the first adjustment plate 250 and the second adjustment plate 260 to be adjusted vertically.

[0072] Optionally, the first end of the first adjustment plate 250 is detachably connected to the inner wall of the smoke hood 100 via a first buckle assembly, and / or the first end of the second adjustment plate 260 is detachably connected to the inner wall of the smoke hood 100 via a second buckle assembly.

[0073] Specifically, the first end of the first adjustment plate 250 is detachably connected to the inner wall of the smoke hood 100 via a first snap assembly; alternatively, the first end of the second adjustment plate 260 is detachably connected to the inner wall of the smoke hood 100 via a second snap assembly; alternatively, the first end of the second adjustment plate 260 is detachably connected to the inner wall of the smoke hood 100 via the first snap assembly, and the first end of the second adjustment plate 260 is detachably connected to the inner wall of the smoke hood 100 via the second snap assembly. Of course, other detachable connection methods, such as threaded connections, are also within the scope of protection of the embodiments of the present invention.

[0074] Further, see Figure 2 and Figure 3 The first snap-fit ​​assembly includes a first pin 252 and multiple groups of first sockets 130, the first pin 252 is provided at the first end of the first adjustment plate 250, the multiple groups of first sockets 130 are provided on the inner wall of the smoke hood 100, and are spaced apart in the vertical direction, and the first pin 252 is inserted into the first socket 130; the second snap-fit ​​assembly includes a second pin 262 and multiple groups of second sockets 140, the second pin 262 is provided at the first end of the second adjustment plate 260, the multiple groups of second sockets 140 are provided on the inner wall of the smoke hood 100, and are spaced apart in the vertical direction, and the second pin 262 is inserted into the second socket 140. Multiple groups of first sockets 130 are arranged at intervals along the vertical direction. By switching the first pins 252 to connect with different first sockets 130, the distance between the first end of the first adjustment plate 250 and the top wall of the smoke hood 100 can be adjusted; similarly, multiple second sockets 140 are arranged at intervals along the vertical direction. By switching the second pins 262 to connect with different second sockets 140, the distance between the first end of the second adjustment plate 260 and the top wall of the smoke hood 100 can be adjusted. Of course, the first snap-fit ​​assembly can also be configured to include a first socket 130 and multiple groups of first pins 252, the first socket 130 is provided at the first end of the first adjustment plate 250, and the multiple groups of first pins 252 are provided on the inner wall of the smoke hood 100, and are spaced apart in the vertical direction, and the first pins 252 are inserted into the first socket 130; similarly, the second snap-fit ​​assembly includes a second socket 140 and multiple groups of second pins 262, the second socket 140 is provided at the first end of the second adjustment plate 260, and the multiple groups of second pins 262 are provided on the inner wall of the smoke hood 100, and are spaced apart in the vertical direction, and the second pins 262 are inserted into the second socket 140.

[0075] Furthermore, the first jack 130 and the second jack 140 are both located on the rear wall of the smoke hood 100. A first bracket 251 is provided at the second end of the first adjustment plate 250, and a second bracket 261 is provided at the second end of the second adjustment plate 260. The first bracket 251 and the second bracket 261 are both detachably connected to the smoke hood 100. The first bracket 251 and the second bracket 261 are both detachably connected to the smoke hood 100, thereby achieving a detachable connection between the first adjustment plate 250 and the second adjustment plate 260 and the top wall of the smoke hood 100. Furthermore, the first bracket 251 and the second bracket 261 are both perpendicular to the top wall of the smoke hood 100. The first ends of the first adjustment plate 250 and the second adjustment plate 260 are inserted into the rear wall of the smoke hood 100. Because the rear wall of the smoke hood 100 is arranged at an angle to the top wall of the smoke hood 100, the first bracket 251 and the second bracket 261 are perpendicular to the top wall of the smoke hood 100, allowing the first adjustment plate 250 and the second adjustment plate 260 to be parallel to the top wall of the smoke hood 100. Furthermore, the first bracket 251 and the second bracket 261 are respectively mounted to the first adjustment plate 250 and the second adjustment plate 260 using fasteners.

[0076] Further, see Figure 2 The top wall of the smoke hood 100 is provided with a first mounting hole 150 and a second mounting hole 160 ; the first bracket 251 is connected to the smoke hood 100 through the first mounting hole 150 , and the second bracket 261 is connected to the smoke hood 100 through the second mounting hole 160 .

[0077] The screw passes through the first bracket 251 and cooperates with the first mounting hole 150 to install the first bracket 251 on the smoke hood 100 ; the screw passes through the second bracket 261 and cooperates with the second mounting hole 160 to install the second bracket 261 on the smoke hood 100 .

[0078] Furthermore, the first bracket 251 and / or the second bracket 261 is a retractable structure.

[0079] Specifically, the first bracket 251 is a telescopic structure; or the second bracket 261 is a telescopic structure; or both the first bracket 251 and the second bracket 261 are telescopic structures. In this embodiment, both the first bracket 251 and the second bracket 261 are telescopic structures.

[0080] After adjusting the vertical position of the first end of the first adjustment plate 250, the length of the first bracket 251 can be adjusted to keep the first adjustment plate 250 parallel to the top wall of the fume hood 100. After adjusting the vertical position of the first end of the second adjustment plate 260, the length of the second bracket 261 can be adjusted to keep the second adjustment plate 260 parallel to the top wall of the fume hood 100.

[0081] Optionally, the first bracket 251 and the second bracket 261 both include a first plate and a second plate, the first plate and the second plate are movably connected, and a locking member is provided therebetween.

[0082] Specifically, the first plate and the second plate are both L-shaped, and one side wall of the first plate is connected to the first adjustment plate 250 or the second adjustment plate 260 by screws, and the other side wall is connected to the second plate. One side wall of the second plate is connected to the top wall of the smoke hood 100 by screws, and the other side wall is connected to the first plate. Limiting holes are provided on the side walls of the first and second plates that are connected to each other. The locking parts include bolts and nuts, and the bolts pass through the limiting holes on the first and second plates and cooperate with the nuts to clamp the first and second plates. When it is necessary to adjust the length of the first bracket 251 or the second bracket 261, loosen the nut so that the first and second plates can move relative to each other. After the adjustment is completed, retighten the nut to fix the first and second plates.

[0083] As another embodiment, the first adjustment plate 250 and the second adjustment plate 260 are both slidably engaged with the smoke hood 100 in the left-right direction. By sliding the first adjustment plate 250 and the second adjustment plate 260 in the left-right direction, the positions of the first adjustment plate 250 and the second adjustment plate 260 are interchanged.

[0084] Furthermore, the adjustment mechanism 200 further includes a drive assembly 230, which is in transmission connection with the first adjustment plate 250 and the second adjustment plate 260 to drive the first adjustment plate 250 and the second adjustment plate 260 to exchange positions. Furthermore, the distance between the first adjustment plate 250 and the top wall of the smoke hood 100 is greater than the distance between the second adjustment plate 260 and the top wall of the smoke hood 100.

[0085] Specifically, when using the first cooker 310, refer to Figure 7 The drive assembly 230 drives the first adjustment plate 250 and the second adjustment plate 260, so that the first adjustment plate 250 is located above the first cooktop 310 and the second adjustment plate 260 is located above the second cooktop 320. The distance between the first adjustment plate 250 and the top wall of the smoke collection hood 100 is increased, increasing the negative pressure in the first smoke collection chamber and lowering the smoke inlet corresponding to the first cooktop 310, thereby facilitating the collection of oil smoke generated by the first cooktop 310. When using the second cooktop 320, please refer to Figure 6 The first and second adjustment plates 250 and 260 move left and right, positioning the first adjustment plate 250 above the second cooktop 320 and the second adjustment plate 260 above the first cooktop 310. The distance between the first adjustment plate 250 and the top wall of the smoke collection hood 100 is increased, increasing the negative pressure within the second smoke collection chamber and lowering the smoke inlet corresponding to the second cooktop 320, thereby facilitating the collection of oil smoke generated by the second cooktop 320. (See [Note: The following appears to be unrelated text and may be an error.) Figure 5The area of ​​the overlapping portion between the first adjustment plate 250 and the second adjustment plate 260 can also be adjusted according to specific circumstances, thereby adjusting the size of the negative pressure zone to meet more usage requirements.

[0086] Further, see Figure 8 The driving assembly 230 includes a motor 231, a gear 233 and a rack 234. The first adjustment plate 250 and the second adjustment plate 260 are both equipped with a rack 234, and the rack 234 extends along the left and right directions; the motor 231 is connected to the gear 233 for transmission, and the gear 233 is engaged with the rack 234.

[0087] Specifically, a rack 234 is mounted on one end of the first adjustment plate 250 and one end of the second adjustment plate 260, both of which extend left and right. A motor 231 is mounted on the rear wall of the fume hood 100, and a gear 233 is mounted on the output shaft of the motor 231. The number of motors 231 and gears 233 is equal, and can be one or two.

[0088] The motor 231 drives the gear 233 to rotate. Since the gear 233 is engaged with the rack 234 , the rotation of the gear 233 drives the rack 234 to move in the left-right direction, thereby driving the first adjustment plate 250 or the second adjustment plate 260 to move in the left-right direction.

[0089] Optionally, when there is only one motor 231 and one gear 233, the first rack is mounted on the upper surface of the first adjustment plate 250 with its meshing teeth facing upward, and the second rack is mounted on the lower surface of the second adjustment plate 260 with its meshing teeth facing downward, with the meshing teeth of the first rack facing the meshing teeth of the second rack facing each other. The gear 233 is located between the two racks 234 and meshes with the two racks 234 respectively. When the motor 231 drives the gear 233 according to Figure 8 When the motor 231 drives the gear 233 in the counterclockwise direction, the first adjusting plate 250 moves to the right and the second adjusting plate 260 moves to the left. Figure 8 When rotating clockwise, the first adjustment plate 250 moves to the left and the second adjustment plate 260 moves to the right. A single motor 231 drives both the first and second adjustment plates 250, 260 simultaneously, achieving synchronized movement of the first and second adjustment plates 250, 260 while reducing the space occupied by the drive assembly 230 and lowering costs.

[0090] Optionally, when there are two motors 231 and two gears 233, the two motors 231 are connected to the two gears 233 in a one-to-one transmission manner, and the two motors 231 are both mounted on the rear wall of the smoke hood 100 and spaced apart along the height of the smoke hood 100. The first rack is mounted on the upper surface of the first adjustment plate 250, and the meshing teeth are set upward. The second rack is mounted on the upper surface of the second adjustment plate 260, and the meshing teeth are set upward. The two gears 233 are respectively the first gear and the second gear. The first gear is located above the first adjustment plate 250 and meshes with the rack 234 on the first adjustment plate 250. The second gear is located above the second adjustment plate 260 and meshes with the rack 234 on the second adjustment plate 260. When the first gear rotates counterclockwise, the first adjustment plate 250 moves rightward, and when the first gear rotates clockwise, the first adjustment plate 250 moves leftward. When the second gear rotates counterclockwise, the second adjustment plate 260 moves leftward, and when the second gear rotates clockwise, the second adjustment plate 260 moves rightward. By using two motors 231 and two gears 233 to drive the first and second adjustment plates 250, 260 can be interchanged, and either one can be driven independently, providing greater flexibility in adjustment.

[0091] As an alternative to sliding fit, see Figure 4 and Figure 5 A guide rail 120 is provided on the smoke collecting hood 100 , and the first adjustment plate 250 and the second adjustment plate 260 are both slidably matched with the guide rail 120 .

[0092] Specifically, two guide rails 120 are provided on both the front and rear walls of the smoke hood 100. The guide rails 120 extend in the left-right direction, and the two guide rails 120 located on the front or rear wall are spaced apart in the vertical direction. A first slider is installed at both the front and rear ends of the first adjustment plate 250, and slides with the two guide rails 120 at the same height on the front and rear walls, respectively. A second slider is installed at both the front and rear ends of the second adjustment plate 260, and slides with the two guide rails 120 at the same height on the front and rear walls, respectively. During the sliding process of the first and second adjustment plates 250, 260, the slider cooperates with the guide rails 120 to improve the stability of the first and second adjustment plates 250, 260 during sliding.

[0093] As another example, see Figures 9 to 11 The adjustment plate 210 includes blades 211, and the adjustment mechanism 200 further includes a central shaft 240. Multiple blades 211 are mounted on the central shaft 240 and distributed along the circumference of the central shaft 240. Adjacent blades 211 are staggered along the axial direction of the central shaft.

[0094] Specifically, a plurality of blades 211 are disposed on the central axis 240. These blades 211 are inclined in the same direction, and adjacent blades 211 are vertically staggered to form a rapid flow channel 220 for the passage of oil smoke. During operation of the range hood, when the oil smoke flows into the rapid flow channel 220 between adjacent blades 211, the cross-sectional area of ​​the rapid flow channel 220 is smaller than the cross-sectional area of ​​the external space. According to the Venturi principle, the oil smoke flows faster as it passes through the rapid flow channel 220, thereby accelerating the speed at which the oil smoke enters the fume hood 100 and improving extraction efficiency.

[0095] Furthermore, the adjustment mechanism 200 further includes a driving assembly 230 , which is in transmission connection with the central shaft 240 .

[0096] The driving component 230 is connected to the central shaft 240 for transmission. The driving component 230 drives the central shaft 240 to drive the multiple blades 211 to rotate. When the oil smoke flows, the energy is increased by the pushing of the blades 211, and the kinetic energy of the oil smoke is converted into pressure energy, further accelerating the oil smoke to enter the smoke collection hood 100, thereby improving the smoking efficiency.

[0097] Furthermore, the central shaft 240 cooperates with multiple blades 211 to form an impeller, and multiple impellers are provided, including a first impeller 270 and a second impeller 280. The smoke inlet of the smoke hood 100 includes a first smoke inlet 170 and a second smoke inlet 180, and the first smoke inlet 170 and the second smoke inlet 180 are arranged at intervals along the left and right directions; the first impeller 270 is installed on the first smoke inlet 170, and the second impeller 280 is installed on the second smoke inlet 180; the driving assembly 230 is respectively connected to the first impeller 270 and the second impeller 280.

[0098] Specifically, when the first cooktop 310 is operating, the drive assembly 230 drives the first impeller 270 to rotate. Oil smoke enters the rapid flow channel 220 between two adjacent blades 211 of the first impeller 270 through the first smoke inlet 170. The oil smoke is pushed by the blades 211, increasing its energy, and then flows into the range hood's air duct system 340. When the second cooktop 320 is operating, the drive assembly 230 drives the second impeller 280 to rotate. Oil smoke enters the rapid flow channel 220 between two adjacent blades 211 of the second impeller 280 through the second smoke inlet 180. The oil smoke is pushed by the blades 211, increasing its energy, and then flows into the range hood's air duct system 340. The first impeller 270, second impeller 280, and air duct system 340 work together to form a three-fan system, increasing the air pressure and air volume of the range hood and improving the range hood's extraction efficiency.

[0099] Example 2:

[0100] This embodiment provides a range hood, which includes the smoke collection mechanism described in the first embodiment, and thus also has all the beneficial effects of the first embodiment, which will not be described in detail here.

[0101] 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 above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above 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 smoke collection mechanism, characterized in that: include: A smoke collecting hood (100) and an adjusting mechanism (200); The adjustment mechanism (200) comprises at least two adjustment plates (210), and the adjustment plates (210) are distributed at the smoke inlet of the smoke collecting hood (100); Adjacent regulating plates (210) are staggered along the flow direction of the oil smoke to form a rapid flow channel (220) for the oil smoke to pass through; The plurality of adjustment plates (210) include a first adjustment plate (250) and a second adjustment plate (260), wherein the first adjustment plate (250) and the second adjustment plate (260) are distributed in the left-right direction; The smoke collecting hood (100) includes a first smoke collecting chamber and a second smoke collecting chamber distributed in a left-right direction, the first smoke collecting chamber and the second smoke collecting chamber are used to correspond to the first cooker (310) and the second cooker (320) respectively, and the positions of the first adjustment plate (250) and the second adjustment plate (260) are adjustable to adjust the negative pressure value in the first smoke collecting chamber and / or the second smoke collecting chamber, and to lower the smoke inlet corresponding to the first cooker (310) and / or the second cooker (320); The distance between the first adjustment plate (250) and the top wall of the smoke hood (100) is greater than the distance between the second adjustment plate (260) and the top wall of the smoke hood (100), and the first adjustment plate (250) and the second adjustment plate (260) are both slidably matched with the smoke hood (100) in the left-right direction, thereby realizing the position interchangeability of the first adjustment plate (250) and the second adjustment plate (260).

2. The smoke collecting mechanism according to claim 1, characterized in that: Orthographic projections of adjacent adjustment plates (210) in the horizontal plane partially overlap.

3. The smoke collecting mechanism according to claim 1, characterized in that: The first adjustment plate (250) and the second adjustment plate (260) are both detachably connected to the smoke hood (100) to adjust the distance between the first adjustment plate (250) and / or the second adjustment plate (260) and the top wall of the smoke hood (100).

4. The smoke collecting mechanism according to claim 3, characterized in that: The first end of the first adjustment plate (250) is detachably connected to the inner wall of the smoke collecting hood (100) via a first buckle assembly, and / or, The first end of the second adjustment plate (260) is detachably connected to the inner wall of the smoke collecting hood (100) via a second buckle assembly.

5. The smoke collecting mechanism according to claim 4, characterized in that: The first buckle assembly comprises a first pin (252) and a plurality of first sockets (130), wherein the first pin (252) is provided at a first end of the first adjustment plate (250), and the plurality of first sockets (130) are provided on an inner wall of the smoke hood (100) and are spaced apart in a vertical direction, and the first pin (252) is inserted into the first sockets (130); The second buckle assembly includes a second pin (262) and a plurality of second sockets (140), wherein the second pin (262) is provided at a first end of the second adjustment plate (260), and the plurality of second sockets (140) are provided on an inner wall of the smoke hood (100) and are spaced apart in a vertical direction, and the second pin (262) is inserted into the second sockets (140).

6. The smoke collecting mechanism according to claim 5, characterized in that: The first plug hole (130) and the second plug hole (140) are both provided on the rear wall of the smoke collecting hood (100); A first bracket (251) is provided at the second end of the first adjustment plate (250), and a second bracket (261) is provided at the second end of the second adjustment plate (260). Both the first bracket (251) and the second bracket (261) are detachably connected to the smoke hood (100).

7. The smoke collecting mechanism according to claim 6, characterized in that: The top wall of the smoke collecting hood (100) is provided with a first mounting hole (150) and a second mounting hole (160); The first bracket (251) is connected to the smoke hood (100) through the first mounting hole (150), and the second bracket (261) is connected to the smoke hood (100) through the second mounting hole (160).

8. The smoke collecting mechanism according to claim 7, characterized in that: The first bracket (251) and / or the second bracket (261) are telescopic structures.

9. The smoke collection mechanism according to claim 8, characterized in that: The first bracket (251) and the second bracket (261) both comprise a first plate and a second plate, the first plate and the second plate being movably connected, and a locking member being provided between the first plate and the second plate.

10. The smoke collecting mechanism according to claim 1, characterized in that: The adjustment mechanism (200) further comprises a driving assembly (230), wherein the driving assembly (230) is in transmission connection with the first adjustment plate (250) and the second adjustment plate (260) to drive the first adjustment plate (250) and the second adjustment plate (260) to exchange positions.

11. The smoke collecting mechanism according to claim 10, characterized in that: The driving assembly (230) includes a motor (231), a gear (233), and a rack (234); the first adjustment plate (250) and the second adjustment plate (260) are both equipped with the rack (234); the rack (234) is extended in the left-right direction; The motor (231) is in transmission connection with the gear (233), and the gear (233) is meshed with the rack (234).

12. The smoke collecting mechanism according to claim 11, characterized in that: The number of the motor (231) and the number of the gear (233) are both one, the rack (234) on the first adjustment plate (250) and the rack (234) on the second adjustment plate (260) are arranged opposite to each other, and the gear (233) is located between the two racks (234); Alternatively, the number of the motors (231) and the number of the gears (233) are both two, and the two motors (231) are transmission-connected to the two gears (233) in a one-to-one correspondence; one of the gears (233) is engaged with the rack (234) on the first adjustment plate (250), and the other gear (233) is engaged with the rack (234) on the second adjustment plate (260).

13. The smoke collection mechanism according to claim 1, characterized in that: A guide rail (120) is provided on the smoke collecting hood (100), and the first adjustment plate (250) and the second adjustment plate (260) are both slidably engaged with the guide rail (120).

14. The smoke collection mechanism according to claim 1, characterized in that: The adjustment plate (210) includes blades (211), and the adjustment mechanism (200) further includes a central shaft (240). A plurality of blades (211) are mounted on the central shaft (240) and distributed along the circumference of the central shaft (240), and adjacent blades (211) are staggered along the axial direction of the central shaft (240).

15. The smoke collection mechanism according to claim 14, characterized in that: The regulating mechanism (200) further comprises a driving assembly (230), wherein the driving assembly (230) is in transmission connection with the central shaft (240).

16. The smoke collection mechanism according to claim 15, characterized in that: The central shaft (240) cooperates with the plurality of blades (211) to form an impeller, wherein a plurality of impellers are provided, and the plurality of impellers include a first impeller (270) and a second impeller (280); the smoke inlet of the smoke collecting hood (100) includes a first smoke inlet (170) and a second smoke inlet (180); the first smoke inlet (170) and the second smoke inlet (180) are spaced apart in the left-right direction; The first impeller (270) is installed at the first smoke inlet (170), and the second impeller (280) is installed at the second smoke inlet (180); The driving assembly (230) is respectively connected in transmission with the first impeller (270) and the second impeller (280).

17. A range hood, characterized in that: It comprises the smoke collection mechanism as described in any one of claims 1-16.

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