CN115789732A - Fume exhaust fan - Google Patents

Abstract

The invention relates to the technical field of kitchen appliances, in particular to a range hood, which comprises a box body, a fume collecting hood assembly, a connecting rod assembly, a linkage assembly and a driving piece, wherein the fume collecting hood assembly comprises an upper baffle, a fume collecting plate and a lower baffle; the driving piece can drive the overhead gage and hold together the cigarette board through link assembly and rotate, and the overhead gage can drive down the baffle through the linkage subassembly and rotate, makes collection petticoat pipe subassembly switch between closed condition and open mode. The single driving piece is adopted, and the connecting rod assembly and the linkage assembly are combined, so that the opening and closing movement of the smoke collecting hood assembly is realized, and the cost is lower; and collection petticoat pipe subassembly is when the open mode, and the opening angle that holds together the cigarette board is greater than the opening angle of overhead gage, and the baffle also can rotate down and open certain angle, so by holding together the area ratio in cigarette district that cigarette board and lower baffle formed, hold together the cigarette effectual, and can not reduce suction.

Description

Fume exhaust fan

Technical Field

The invention relates to the technical field of kitchen appliances, in particular to a range hood.

Background

The range hood is an electrical appliance widely used in kitchens and is used for exhausting oil smoke generated in the cooking process of a stove. In a part of thin range hood, a turning plate is arranged at one end of a smoke collection mechanism close to oil smoke. In the prior art, when the ultra-thin range hood is in a non-working state, the turning plate is tightly attached to the smoke collecting mechanism, so that the smoke collecting mechanism is protected to a certain extent, and the volume of the ultra-thin range hood is reduced; under operating condition, in order to prevent that the oil smoke from escaping, turn over the board and open the wind channel that admits air, turn over the board simultaneously and form certain angle with collection cigarette mechanism, collection cigarette mechanism collects the exhaust oil smoke, but this kind turns over the board and wholly shelters from seriously to operator's sight when opening, and the oil absorption mouth distance produces oil smoke kitchen range central zone far away, in addition in order to avoid turning over the board excessively to shelter from the sight, and rotation angle is limited, leads to gathering together the cigarette effect poor.

Disclosure of Invention

The invention aims to provide a range hood which has a good smoke collecting effect and can not reduce the suction force.

In order to achieve the purpose, the invention adopts the following technical scheme:

a range hood, comprising:

a box body;

the smoke collecting hood assembly comprises an upper baffle, a smoke collecting plate and a lower baffle, wherein the upper end of the upper baffle is hinged with the upper end of the box body through an upper rotating shaft, the smoke collecting plate is connected with the upper baffle through a connecting rod assembly, the lower end of the lower baffle is hinged with the lower end of the box body through a lower rotating shaft, and the lower baffle is connected with the upper baffle through a linkage assembly;

the driving piece is in driving connection with one connecting rod in the connecting rod assembly, the driving piece can drive the upper baffle plate and the smoke collecting plate to rotate through the connecting rod assembly, the upper baffle plate can drive the lower baffle plate to rotate through the linkage assembly, and therefore the smoke collecting cover assembly is switched between a closed state and an open state.

Optionally, when the smoke collecting hood assembly is in the closed state, the upper baffle, the smoke collecting plate and the lower baffle are all in a vertical state, the upper baffle and the smoke collecting plate are arranged side by side in the vertical direction, and the lower baffle is located on the inner sides of the upper baffle and the smoke collecting plate; when collection petticoat pipe subassembly is in during the open mode, the overhead gage with hold together the cigarette board and wind go up the pivot and open, just hold together the opening angle of cigarette board and be greater than the opening angle of overhead gage, the baffle winds down the pivot is opened down, hold together the cigarette board with form down between the baffle and hold together the cigarette district.

Optionally, the linkage assembly comprises a sliding rail and a linkage support, the sliding rail is arranged on the upper baffle, one end of the linkage support is slidably connected to the sliding rail, and the other end of the linkage support is hinged to the lower baffle.

Optionally, the slide rail includes a fixing frame, a ball support, a ball, and a slider, the ball is disposed on the ball support, the ball support can slide relative to the fixing frame, and the slider can slide relative to the ball support, and the linkage support is connected to the slider.

Optionally, the upper end surface of the ball support is provided with two first limiting bosses at intervals along the sliding direction of the ball support, the lower end surface of the slider is provided with two second limiting bosses at intervals along the sliding direction of the slider, and the two first limiting bosses are in one-to-one correspondence with the two second limiting bosses to limit the movement of the slider in two directions.

Optionally, the number of the slide rails is two, the number of the linkage supports is one, the two slide rails are respectively arranged on the upper baffle and the side plate vertically connected with the upper baffle, and the linkage supports are simultaneously connected to the two slide rails in a sliding manner.

Optionally, an inclined plate which is right opposite to the side plate is arranged in the box body, an included angle is formed between the inclined plate and the side plate, and the distance between the inclined plate and the side plate is gradually reduced along the opening direction of the upper baffle plate.

Optionally, the connecting rod assembly includes a first fixing support, a first connecting rod a, a first connecting rod b, a second fixing support, a second connecting rod a and a second connecting rod b, the first fixing support and the second fixing support are fixed to the upper baffle and the smoke collecting plate respectively, one end of the first connecting rod a is hinged to the first fixing support, the other end of the first connecting rod a is hinged to one end of the first connecting rod b, and the other end of the first connecting rod b is hinged to the second fixing support; one end of the second connecting rod a is hinged to the second fixing support, the other end of the second connecting rod a is hinged to one end of the second connecting rod b, the other end of the second connecting rod b is hinged to the first fixing support, the first connecting rod b is hinged to the second connecting rod b, and the driving piece is in driving connection with the second connecting rod b.

Optionally, a through hole penetrating along the thickness direction of the second connecting rod b is formed in the second connecting rod b, the first connecting rod b is crossed and arranged in the through hole, and the second connecting rod b is hinged to the first connecting rod b at the crossed position.

Optionally, the drive is an electric push rod.

The invention has the beneficial effects that:

the range hood provided by the embodiment of the invention adopts a single driving piece, and is combined with the connecting rod assembly and the linkage assembly, so that the opening and closing movement of the fume collecting hood assembly is realized, and the cost is lower; and collection petticoat pipe subassembly is when the open mode, and the opening angle who gathers the cigarette board is greater than the opening angle of overhead gage, and the baffle also can rotate down and open certain angle, so by gather the area ratio of cigarette district that gathers that cigarette board and lower baffle formed, it is effectual to gather the cigarette, and because the opening angle of overhead gage is less, so can not reduce suction under the sheltering from of overhead gage.

Drawings

Fig. 1 is a first schematic structural diagram of a range hood in a closed state according to an embodiment of the present invention;

fig. 2 is a first structural schematic diagram of the range hood provided by the embodiment of the invention in an open state;

fig. 3 is a second schematic structural diagram of the range hood provided in the embodiment of the present invention in a closed state;

fig. 4 is a second schematic structural diagram of the range hood provided in the embodiment of the present invention in an open state;

FIG. 5 is a schematic illustration of the linkage assembly, upper baffle and lower baffle when unopened in accordance with an embodiment of the present invention;

FIG. 6 is a schematic view of the linkage assembly, upper baffle and lower baffle, when open, according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a linkage assembly according to an embodiment of the present invention;

fig. 8 is a schematic structural view of a slide rail according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a reinforcing rib structure according to an embodiment of the present invention;

FIG. 10 is a schematic view of the construction of side plates and inclined plates according to the embodiment of the present invention;

FIG. 11 is a schematic structural view of a drive member and linkage assembly in accordance with an embodiment of the present invention;

FIG. 12 is a first schematic structural view of a connecting rod assembly according to an embodiment of the present invention;

FIG. 13 is a second structural schematic view of a connecting rod assembly in accordance with an embodiment of the present invention;

FIG. 14 is a structural schematic view three of a connecting rod assembly according to an embodiment of the present invention;

FIG. 15 is a fourth structural schematic view of a connecting rod assembly in accordance with an embodiment of the present invention;

fig. 16 is a schematic structural diagram of another view angle of the range hood provided in the embodiment of the present invention in the closed state;

fig. 17 is a sectional view of a range hood provided in an embodiment of the present invention;

fig. 18 is a schematic structural view of an oil cup according to an embodiment of the present invention;

fig. 19 is a partial enlarged view at B in fig. 18;

fig. 20 is a partial enlarged view at a in fig. 17.

In the figure:

10. a box body; 11. an inclined plate;

20. a fume collecting hood assembly; 21. an upper baffle plate; 211. an upper rotating shaft; 212. a side plate; 22. a cigarette collecting plate; 23. a lower baffle plate; 231. a lower rotating shaft; 232. avoiding holes; 24. an oil screen;

30. a linkage assembly; 31. a slide rail; 311. a fixed mount; 312. a ball support; 3121. a first limit boss; 313. a ball bearing; 314. a slider; 3141. a second limit boss; 32. a linkage bracket; 321. a flat plate portion; 322. an arc-shaped frame; 33. a linkage pin;

40. a connecting rod assembly; 41. a first fixed bracket; 411. a first mounting hole; 412. a first hinge shaft; 413. a second hinge shaft; 414. a first limit surface; 415. a second limiting surface; 42. a second fixed bracket; 421. a second mounting hole; 422. a third hinge shaft; 423. a fourth hinge shaft; 43. a first link a; 44. a first link b; 45. a second link a; 46. a second link b; 461. a fifth hinge shaft; 462. a sixth hinge shaft;

50. a drive member;

60. an oil cup; 61. an oil cup body; 62. a buckle assembly; 621. a button; 622. a first return spring; 623. a first transmission lever; 624. a second transmission rod; 625. buckling; 6251. a hook portion; 626. a second return spring;

70. an impeller;

80. an oil collecting tray;

90. a gravity sensor.

Detailed Description

In order to make the objects, 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 with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the present invention is conventionally placed in use, and are only used for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 20, an embodiment of the present invention provides a range hood, which includes a box 10, a smoke collecting cover assembly 20, a connecting rod assembly 40, a linkage assembly 30, and a driving member 50, wherein an exhaust inlet is disposed on a front side of the box 10; the smoke collecting hood assembly 20 is used for opening and closing the air suction opening, the smoke collecting hood assembly 20 comprises an upper baffle plate 21, a smoke collecting plate 22 and a lower baffle plate 23, the upper end of the upper baffle plate 21 is hinged with the upper end of the box body 10 through an upper rotating shaft 211, the smoke collecting plate 22 is connected with the upper baffle plate 21 through a connecting rod assembly 40, the lower end of the lower baffle plate 23 is hinged with the lower end of the box body 10 through a lower rotating shaft 231, the lower baffle plate 23 is connected with the upper baffle plate 21 through a linkage assembly 30, and an oil screen 24 is arranged on the lower baffle plate 23; the driving part 50 is in driving connection with one of the connecting rod assemblies 40, the driving part 50 can drive the upper baffle 21 and the smoke collecting plate 22 to rotate through the connecting rod assemblies 40, and the upper baffle 21 can drive the lower baffle 23 to rotate through the linkage assembly 30. The driving piece 50 can drive the smoke collecting hood assembly 20 to switch between a closed state and an open state, referring to fig. 1 and 3, when the smoke collecting hood assembly 20 is in the closed state, the upper baffle 21, the smoke collecting plate 22 and the lower baffle 23 are all in a vertical state, the upper baffle 21 and the smoke collecting plate 22 are arranged side by side in the vertical direction, and the lower baffle 23 is located on the inner sides of the upper baffle 21 and the smoke collecting plate 22; referring to fig. 2 and 4, when the smoke collecting cover assembly 20 is in an open state, the upper baffle 21 and the smoke collecting plate 22 rotate around the upper rotating shaft 211 to open, and the open angle of the smoke collecting plate 22 is greater than the open angle of the upper baffle 21 (as can be seen from fig. 4, the included angle between the upper baffle 21 and the vertical direction is α, and the included angle between the smoke collecting plate 22 and the upper baffle 21 is δ), the lower baffle 23 rotates around the lower rotating shaft 231 to open the angle β, and a smoke collecting area is formed between the smoke collecting plate 22 and the lower baffle 23. In the present embodiment, the driving member 50 is an electric push rod.

According to the range hood provided by the embodiment of the invention, the single driving piece 50 is adopted, and the connecting rod assembly 40 and the linkage assembly 30 are combined, so that the opening and closing movement of the fume collecting hood assembly 20 is realized, and the cost is lower; and collection petticoat pipe subassembly 20 is when open mode, and the opening angle that holds together cigarette board 22 is greater than the opening angle of overhead gage 21, and lower baffle 23 also can rotate and open certain angle, so hold together the area of cigarette district by holding together cigarette board 22 and baffle 23 down and be bigger, hold together cigarette effectually, and because the opening angle of overhead gage 21 is less, so can not reduce suction under the sheltering from of overhead gage 21.

Further, with continued reference to fig. 3 and 4, when the smoke collecting hood assembly 20 is in the closed state, the upper portion of the lower baffle 23 overlaps with the lower portion of the upper baffle 21, the upper end of the lower baffle 23 is always in abutment with the inner wall of the upper baffle 21 during switching of the smoke collecting hood assembly 20 from the closed state to the open state, and when the smoke collecting hood assembly 20 is in the open state, the upper end of the lower baffle 23 is in abutment with the lower end of the upper baffle 21. Therefore, the upper baffle plate 21 and the lower baffle plate 23 are always kept in butt joint, and the sealing performance of the smoke collecting hood assembly 20 is ensured.

Referring to fig. 5 to 7, the linkage assembly 30 includes a slide rail 31 and a linkage bracket 32, the slide rail 31 is disposed on the upper baffle 21, one end of the linkage bracket 32 is slidably connected to the slide rail 31, and the other end of the linkage bracket 32 is hinged to the lower baffle 23 through a linkage pin 33. The upper baffle 21 can drive the lower baffle 23 to rotate through the linkage assembly 30. When the upper baffle 21 rotates around the upper rotating shaft 211 hinged with the box body 10 to be opened, the linkage bracket 32 slides downwards along the slide rail 31 under the action of the pulling force of the lower baffle 23, so that the lower baffle 23 rotates around the lower rotating shaft 231 hinged with the box body 10 to be opened along with the upper baffle 21; when the upper baffle 21 is rotated and closed around the upper rotating shaft 211 hinged with the box body 10, the linkage bracket 32 slides upwards along the slide rail 31 under the pushing force of the lower baffle 23, so that the lower baffle 23 is rotated and closed around the lower rotating shaft 231 hinged with the box body 10 along with the upper baffle 21.

In this embodiment, preferably, referring to fig. 8, the slide rail 31 includes a fixed frame 311, a ball support 312, a ball 313 and a slider 314, the ball 313 is disposed on the ball support 312, the ball support 312 can slide relative to the fixed frame 311, the slider 314 can slide relative to the ball support 312, and the linking support 32 is connected to the slider 314. Through the above-mentioned structural arrangement of the slide rail 31, the ball support 312 and the fixed frame 311 and the ball support 312 and the slider 314 slide in a dotted line contact manner, and the friction is small. The fixing frame 311 includes a bottom plate and enclosing plates disposed around the bottom plate, the ball support 312 is in sliding contact with the two enclosing plates distributed along the length direction of the bottom plate through a ball 313, and the two enclosing plates along the width direction of the bottom plate limit the sliding of the ball support 312. In addition, the upper end surface of the ball support 312 is provided with two first limit bosses 3121 at intervals along the sliding direction thereof, the lower end surface of the slider 314 is provided with two second limit bosses 3141 at intervals along the sliding direction thereof, and the two first limit bosses 3121 correspond to the two second limit bosses 3141 one to one so as to limit the movement of the slider 314 in two directions. In the sliding process of the slider 314, when the second limit boss 3141 abuts against the first limit boss 3121, the sliding of the slider 314 is stopped.

The side plates 212 are vertically connected to two sides of the top baffle 21, and generally, the thickness of the side plates 212 is relatively thin, so that the side plates 212 are easily deformed, and in this embodiment, a reinforcing rib structure is added between the top baffle 21 and the side plates 212 to enhance the strength of the side plates 212. In this embodiment, referring to fig. 9, the reinforcing rib structure is composed of two slide rails 31 and a linking bracket 32, the two slide rails 31 are respectively disposed on the upper baffle 21 and the side plate 212, and the linking bracket 32 is simultaneously slidably connected to the two slide rails 31. The two slide rails 31 and the linkage support 32 form a reinforcing rib structure, so that the strength of the upper baffle plate 21 and the side plate 212 can be enhanced, and the problem that the verticality and the stability of the upper baffle plate 21 are difficult to ensure due to the thinness of the side plate 212 is effectively solved; and the reinforcing rib structure is arranged by relying on the linkage assembly 30, other structures do not need to be additionally arranged, and the structure is simple. Optionally, the linkage bracket 32 includes an L-shaped bracket and an arc-shaped bracket 322, the L-shaped bracket includes two flat plate portions 321 vertically connected, the two flat plate portions 321 are respectively connected with the two slide rails 31 in a one-to-one correspondence manner, one end of the arc-shaped bracket 322 is connected to the L-shaped bracket, and the other end of the arc-shaped bracket 322 is hinged to the lower baffle 23 through a linkage pin 33. Preferably, a reinforcing plate is further connected between the two flat plate portions 321 to increase the structural strength of the L-shaped frame. In this embodiment, the number of the reinforcing plates is two, and the two reinforcing plates are respectively located at both ends of the flat plate portion 321. Of course, the rib configuration is merely illustrative and not limiting.

In the present embodiment, preferably, referring to fig. 10, an inclined plate 11 disposed opposite to the side plate 212 is disposed in the box body 10, an included angle between the inclined plate 11 and the side plate 212 is θ, and a distance between the inclined plate 11 and the side plate 212 gradually decreases along an opening direction of the upper flap 21. With the arrangement, a minimum safety gap can be always kept between the side plate 212 and the case 10.

Generally, the interval between the cigarette collecting plate 22 and the upper baffle 21 is at least set to be equal to the thickness of the cigarette collecting plate 22, so as to avoid that the cigarette collecting plate 22 does not interfere with the upper baffle 21 in the process of overturning relative to the upper baffle 21. However, in the present embodiment, the link assembly 40 is configured to enable the smoke collecting plate 22 to perform a combined movement of rotation and translation relative to the upper baffle 21, that is, the smoke collecting plate 22 can also translate in a direction away from the upper baffle 21 in addition to being able to turn relative to the upper baffle 21, so that a gap between the upper baffle 21 and the smoke collecting plate 22 can be made small enough, and interference between the smoke collecting plate 22 and the upper baffle 21 can also be avoided. Generally, the thickness of the smoke collecting plate 22 is 4mm, in this embodiment, when the smoke collecting cover assembly 20 is in a closed state, the interval between the lower end of the upper baffle 21 and the upper end of the smoke collecting plate 22 may be less than 4mm, and even may be gapless.

Specifically, referring to fig. 11 and 12, the link assembly 40 includes a first fixing bracket 41, a first link a43, a first link b44, a second fixing bracket 42, a second link a45, and a second link b46, the first fixing bracket 41 and the second fixing bracket 42 are respectively fixed to the upper baffle 21 and the smoke trap 22, one end of the first link a43 is hinged to the first fixing bracket 41 through a first hinge shaft 412, the other end of the first link a43 is hinged to one end of the first link b44, the other end of the first link b44 is hinged to the second fixing bracket 42 through a third hinge shaft 422, one end of the second link a45 is hinged to the second fixing bracket 42 through a fourth hinge 423, the other end of the second link a45 is hinged to one end of the second link b46, the other end of the second link b46 is hinged to the first fixing bracket 41 through a second hinge shaft 413, and the first link b44 is hinged to the second link b46 through a fifth hinge shaft 461. The driving end of the driving member 50 is hinged to the second link b46 through a sixth hinge shaft 462. In this embodiment, the lower baffle 23 is provided with an avoiding hole 232, and the avoiding hole 232 is used for avoiding the second fixing bracket 42 and a rod connected to the second fixing bracket 42.

Referring to fig. 13 to 15, the link assembly 40 forms two double rocker mechanisms, namely, a first double rocker mechanism (refer to fig. 13) illustrated by a line L1, a line L2, and a line L3, and a second double rocker mechanism (refer to fig. 14) illustrated by a line L4, a line L5, and a line L6. As shown in fig. 15, the driving member 50 drives the second link b46, which corresponds to the portion represented by the straight line L5 driving the second double rocker mechanism, and at this time, the portions represented by the straight lines L4 and L6 swing as the driven portion, so as to drive the fourth hinge shaft 423 of the second fixing bracket 42 to turn around the second hinge shaft 413 of the first fixing bracket 41; meanwhile, the second connecting rod b46 can drive the first connecting rod b44 to translate, that is, the portion represented by the straight line L2 translates, and further the portions represented by the straight lines L1 and L3 swing, so as to drive the third hinge shaft 422 of the second fixing bracket 42 to turn around the first hinge shaft 412 of the first fixing bracket 41; in addition, since the portions represented by the straight lines L2 and L3 are actually the first connecting rods b44, the first connecting rods b44 perform a combined turning and translation motion, so that the second fixing brackets 42 perform a combined turning and translation motion, and the second fixing brackets 42 are disposed on the cigarette collecting plate 22, so that the cigarette collecting plate 22 can perform a combined turning and translation motion relative to the upper baffle 21.

In this embodiment, with reference to fig. 13 to 15, a first limiting surface 414 and a second limiting surface 415 are respectively disposed on two sides of the first connecting rod a43 of the first fixing bracket 41, and the first limiting surface 414 and the second limiting surface 415 are respectively used for limiting an angle of the first connecting rod a43 rotating towards two sides, so as to limit a turning angle of the cigarette collecting plate 22. The connecting rod assembly 40 is provided with the first limiting surface 414 and the second limiting surface 415, so that a limiting mechanism is not required to be additionally arranged, the structure is simplified, and the cost is saved; and the problems of large friction and dead points during connection and limitation caused by additionally arranging a limiting mechanism are also avoided. Of course, the positions of the first limiting surface 414 and the second limiting surface 415 are not limited to this, and the first limiting surface 414 and the second limiting surface 415 may be respectively disposed on two sides of the second connecting rod b46 of the first fixing bracket 41, and at this time, the first limiting surface 414 and the second limiting surface 415 are respectively used for limiting the angle of the second connecting rod b46 rotating towards two sides; or the second fixing bracket 42 is provided with a first limiting surface 414 and a second limiting surface 415 on two sides of the first connecting rod b44, and at this time, the first limiting surface 414 and the second limiting surface 415 are used for limiting the angle of the first connecting rod b44 rotating towards two sides; or the second fixing bracket 42 is respectively provided with a first limiting surface 414 and a second limiting surface 415 at two sides of the second connecting rod a45, and at this time, the first limiting surface 414 and the second limiting surface 415 are respectively used for limiting the angle of the second connecting rod a45 rotating towards two sides; or one side of any one of the first connecting rod a43, the first connecting rod b44, the second connecting rod a45 or the second connecting rod b46 may be provided with a first limiting surface 414, and the other side of the other one may be provided with a second limiting surface 415, which may meet the requirements, and may be specifically set as required.

Preferably, referring to fig. 12, the second link b46 is provided with a through hole penetrating along the thickness direction thereof, the first link b44 is crosswise arranged in the through hole, and the second link b46 is hinged to the first link b44 at the intersection. In addition, one ends of the first link a43 and the second link b46 hinged to the first fixing bracket 41 are interposed between both side walls of the first fixing bracket 41, and one ends of the second link a45 and the first link b44 hinged to the second fixing bracket 42 are interposed between both side walls of the second fixing bracket 42. Through the arrangement, the structure of the connecting rod assembly 40 is more compact, the shaking in the movement is reduced, and the stability and the reliability of the whole connecting rod assembly 40 are guaranteed.

In addition, the link assembly 40 may be a single module, a first mounting hole 411 is disposed on the first fixing bracket 41, a second mounting hole 421 is disposed on the second fixing bracket 42, and the first mounting hole 411 and the second mounting hole 421 are disposed so that the link assembly 40 module can be matched with a corresponding mounting hole disposed on the mounting panel, in this embodiment, the first fixing bracket 41 is mounted on the upper baffle 21 through the first mounting hole 411, and the second fixing bracket 42 is mounted on the smoke-collecting plate 22 through the second mounting hole 421. Through the arrangement, simplification and reliability of installation and production can be realized.

Referring to fig. 16 and 17, the range hood according to the embodiment of the present invention further includes an oil cup 60, the lower end of the box 10 is provided with an oil cup groove, the oil cup 60 is detachably installed in the oil cup groove, the lower end surface of the oil cup 60 is flush with the lower end surface of the box 10, oil stains collected and centrifugally thrown away by the impeller 70 flow out from the bottom oil dripping hole under the action of gravity, are collected by the oil collecting tray 80 below, and then flow out from the oil collecting hole at the bottom of the oil collecting tray, and enter the oil cup 60 for storage. Through the arrangement, the hidden installation of the oil cup 60 is realized, so that the appearance of the range hood is more attractive.

In this embodiment, the oil cup 60 is preferably connected with the oil cup groove by a snap, so that the oil cup 60 can be conveniently disassembled and assembled. Specifically, referring to fig. 18 to 20, the oil cup 60 includes an oil cup body 61 and two sets of buckle assemblies 62, the oil cup body 61 is provided with mounting grooves along both sides of its own length direction, the two sets of buckle assemblies 62 are arranged in two mounting grooves in a one-to-one correspondence manner, two clamping grooves corresponding to the buckle assemblies 62 are arranged in the oil cup grooves, and the buckle assemblies 62 can be clamped with the clamping grooves. Or the positions of the buckle assembly 62 and the clamping groove can be exchanged, that is, the buckle assembly 62 is arranged in the oil cup groove, and the clamping groove is arranged on the oil cup body 61.

More specifically, the buckle assembly 62 includes a buckle 625, a transmission rod set, a button 621, a first return spring 622 and a second return spring 626, a through hole is provided on a groove wall of the mounting groove, and a hook portion 6251 of the buckle 625 can extend and retract through the through hole and can be clamped with the slot when the hook portion 6251 extends; the button 621 is connected with the buckle through a transmission rod group, and the hook part 6251 of the buckle 625 can be controlled to retract from the through hole by pressing the button 621; the first return spring 622 is used for controlling the button 621 to return, and the second return spring 626 is used for controlling the buckle 625 to return. When the oil cup 60 is installed, firstly, two hands press the buttons 621 on two sides respectively, the buttons 621 drive the clamping hook portions 6251 of the clamping buckles 625 to retract through the transmission rod set, meanwhile, the first return spring 622 and the second return spring 626 are compressed, then the oil cup 60 is placed into the oil cup groove, the pressing of the buttons 621 is released, the buttons 621 reset under the action of the first return spring 622, the clamping buckles 625 reset under the action of the second return spring 626, namely, the clamping hook portions 6251 of the clamping buckles 625 reset to the state extending out of the through holes, and at the moment, the clamping hook portions 6251 are clamped and fixed with the clamping grooves. When the oil cup 60 needs to be cleaned, the two hands respectively press the buttons 621 on the two sides to detach the oil cup 60.

In this embodiment, the transmission lever set preferably includes a first transmission lever 623 and a second transmission lever 624, the first transmission lever 623 is L-shaped, one end of the first transmission lever 623 is connected to the button 621, the other end of the first transmission lever 623 has a first wedge surface, one end of the second transmission lever 624 is connected to the buckle 625, the other end of the second transmission lever 624 has a second wedge surface, and the first wedge surface and the second wedge surface are in sliding fit. When pressing button 621, button 621 upward movement compresses first reset spring 622, promotes first wedge face upward movement simultaneously, because of first wedge face and second wedge face are the inclined plane contact, so the second wedge face can backward movement to drive buckle 625 rearward movement compresses second reset spring 626 simultaneously.

In this embodiment, preferably, a first positioning portion is disposed in the mounting groove, the first driving rod 623 is slidably disposed through the first positioning portion, and the first return spring 622 is sleeved on the first driving rod 623 and located between the button 621 and the first positioning portion. A second positioning portion is further disposed in the mounting groove, the buckle 625 is slidably disposed through the second positioning portion, and the second return spring 626 is sleeved on the buckle 625 and located between the second positioning portion and the hook portion 6251.

Further, the range hood provided by the embodiment of the invention further comprises an oil quantity detection device, the oil quantity detection device is used for detecting the oil collection quantity in the oil cup body 61, and the oil quantity detection device is in communication connection with the alarm device. When the weight of collected oil in the oil cup 60 reaches a set value, the oil quantity detection device controls the alarm device to give an alarm through the electric control signal so as to prompt a user to clean the oil cup 60, so that the oil cup 60 is cleaned in time, and the overflow of the oil when full is avoided.

In this embodiment, referring to fig. 20, the oil amount detecting device is a gravity sensor 90, the gravity sensor 90 is disposed in the slot, when the hook portion 6251 is engaged with the slot, the hook portion 6251 can be supported by the gravity sensor 90, and when the gravity sensor 90 detects that the weight of the oil cup 60 reaches a set weight, it indicates that the oil amount is full, and the oil cup 60 needs to be cleaned. Or the oil mass detection device can also be for including buoyancy ball and sensor, and buoyancy ball sets up in oil cup body 61, and the sensor is used for detecting the height of buoyancy ball, and when the sensor detected that buoyancy ball reached and set for the height, then it is full to explain the oil mass, needs clear up oil cup 60.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A range hood, comprising:

a case (10);

the smoke collecting hood assembly (20) comprises an upper baffle (21), a smoke collecting plate (22) and a lower baffle (23), the upper end of the upper baffle (21) is hinged to the upper end of the box body (10) through an upper rotating shaft (211), the smoke collecting plate (22) is connected with the upper baffle (21) through a connecting rod assembly (40), the lower end of the lower baffle (23) is hinged to the lower end of the box body (10) through a lower rotating shaft (231), and the lower baffle (23) is connected with the upper baffle (21) through a linkage assembly (30);

driving piece (50), its with a connecting rod drive connection in link assembly (40), driving piece (50) can pass through link assembly (40) drive overhead gage (21) with smoke collecting plate (22) rotate, overhead gage (21) can pass through linkage subassembly (30) drive down baffle (23) rotate, so that smoke collecting cover subassembly (20) switch between closed condition and open mode.

2. The range hood according to claim 1, wherein when the fume collecting hood assembly (20) is in the closed state, the upper baffle (21), the fume collecting plate (22) and the lower baffle (23) are all in a vertical state, the upper baffle (21) and the fume collecting plate (22) are arranged side by side in a vertical direction, and the lower baffle (23) is located on the inner side of the upper baffle (21) and the fume collecting plate (22); when collection petticoat pipe subassembly (20) is in during the open mode, overhead gage (21) with hold together cigarette board (22) and wind go up pivot (211) and open, just the opening angle who holds together cigarette board (22) is greater than the opening angle of overhead gage (21), baffle (23) wind down pivot (231) are opened, hold together cigarette board (22) with form down between baffle (23) and hold together the cigarette district.

3. The range hood according to claim 1, wherein the linkage assembly (30) comprises a slide rail (31) and a linkage bracket (32), the slide rail (31) is disposed on the upper baffle (21), one end of the linkage bracket (32) is slidably connected to the slide rail (31), and the other end of the linkage bracket (32) is hinged to the lower baffle (23).

4. The range hood according to claim 3, wherein the slide rail (31) comprises a fixed frame (311), a ball support (312), a ball (313) and a slider (314), the ball (313) is disposed on the ball support (312), the ball support (312) can slide relative to the fixed frame (311), the slider (314) can slide relative to the ball support (312), and the linkage support (32) is connected with the slider (314).

5. The range hood according to claim 4, wherein the upper end surface of the ball support (312) is provided with two first limiting bosses (3121) at intervals along the sliding direction thereof, the lower end surface of the sliding block (314) is provided with two second limiting bosses (3141) at intervals along the sliding direction thereof, and the two first limiting bosses (3121) and the two second limiting bosses (3141) are in one-to-one correspondence to limit the movement of the sliding block (314) in two directions.

6. The range hood according to claim 3, wherein the number of the slide rails (31) is two, the number of the linkage brackets (32) is one, the two slide rails (31) are respectively arranged on the upper baffle (21) and the side plate (212) vertically connected with the upper baffle (21), and the linkage brackets (32) are simultaneously connected with the two slide rails (31) in a sliding manner.

7. The range hood according to claim 6, wherein an inclined plate (11) is arranged in the box body (10) and is opposite to the side plate (212), an included angle is formed between the inclined plate (11) and the side plate (212), and the distance between the inclined plate (11) and the side plate (212) is gradually reduced along the opening direction of the upper baffle (21).

8. The range hood according to claim 1, wherein the connecting rod assembly (40) comprises a first fixing bracket (41), a first connecting rod a (43), a first connecting rod b (44), a second fixing bracket (42), a second connecting rod a (45) and a second connecting rod b (46), the first fixing bracket (41) and the second fixing bracket (42) are respectively fixed to the upper baffle plate (21) and the smoke collecting plate (22), one end of the first connecting rod a (43) is hinged to the first fixing bracket (41), the other end of the first connecting rod a (43) is hinged to one end of the first connecting rod b (44), and the other end of the first connecting rod b (44) is hinged to the second fixing bracket (42); one end of the second connecting rod a (45) is hinged with the second fixed support (42), the other end of the second connecting rod a (45) is hinged with one end of the second connecting rod b (46), the other end of the second connecting rod b (46) is hinged with the first fixed support (41), the first connecting rod b (44) is hinged with the second connecting rod b (46), and the driving piece (50) is in driving connection with the second connecting rod b (46).

9. The range hood according to claim 8, wherein the second link b (46) has a through hole penetrating along a thickness direction thereof, the first link b (44) is crossed and disposed in the through hole, and the second link b (46) is hinged to the first link b (44) at a crossing position.

10. The range hood of claim 1, wherein the drive member (50) is an electric push rod.

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