CN109405022B

CN109405022B - Smoke exhaust ventilator

Info

Publication number: CN109405022B
Application number: CN201811462540.6A
Authority: CN
Inventors: 邬伟; 谭柏豪; 蒋济武; 黎本锋
Original assignee: Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Smart Kitchen Appliance Manufacturing Co Ltd
Priority date: 2018-11-30
Filing date: 2018-11-30
Publication date: 2020-06-19
Anticipated expiration: 2038-11-30
Also published as: CN109405022A

Abstract

The invention discloses a range hood, which is provided with a smoke collection cavity and comprises: the rear side of the second cigarette holding plate is connected with the rack in a lifting way; the lifting mechanism is connected with the rear side of the rack and the rear side of the second cigarette holding plate; the oil cup is connected with the rear side of the second smoke collecting plate and ascends and descends along with the ascending and descending of the second smoke collecting plate, so that the oil cup can descend to a position far away from the smoke collecting cavity. The technical scheme of the invention is convenient for mounting and dismounting the oil cup.

Description

Smoke exhaust ventilator

Technical Field

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

Background

The oil cup of current lampblack absorber is installed usually in the collection smoke chamber, for the convenience of user's culinary art operation, need keep certain distance between collection smoke chamber and the top of a kitchen range. Therefore, the distance between the oil cup and the ground is large, and the operation of the oil cup by a user is very unfavorable. Referring to fig. 1, the front side wall 1 and the rear side wall of the smoke collecting cavity are enclosed to form a smoke collecting cavity, the condensing plate 2 is located in the smoke collecting cavity, and the oil cup 3 is fixedly arranged at the rear side of the smoke collecting cavity.

Disclosure of Invention

The invention mainly aims to provide a range hood, aiming at reducing the distance between an oil cup and the ground so as to facilitate the installation and the disassembly of the oil cup by a user.

In order to achieve the above object, the present invention provides a range hood, which has a smoke collection chamber, and comprises:

a machine frame, a plurality of guide rails and a plurality of guide rails,

the rear side of the second cigarette holding plate is connected with the rack in a lifting way;

the oil cup is connected with the rear side of the second smoke collecting plate and ascends and descends along with the ascending and descending of the second smoke collecting plate, so that the oil cup can descend to a position far away from the smoke collecting cavity.

Preferably, the range hood further comprises a lifting mechanism, and the lifting mechanism is connected with the rear side of the rack and the rear side of the second smoke collecting plate;

the lifting mechanism comprises a lifting device and a mounting bracket, the rear side of the second smoke collecting plate is hinged with the mounting bracket, and the oil cup is fixedly connected with the mounting bracket; the mounting bracket is connected with the rack in a lifting way through the lifting device.

Preferably, the mounting bracket is arranged in a long strip shape, the oil cup is positioned below the mounting bracket, and two ends of the oil cup are detachably connected with two ends of the mounting bracket respectively.

Preferably, the lifting device comprises an electric push rod, one end of the electric push rod is fixedly connected with the rack, and the other end of the electric push rod is connected with the mounting bracket.

Preferably, the frame is including being located the backplate of collection smoke cavity rear side, the backplate includes the base plate and from the base plate to the inside mounting panel that extends of collection smoke cavity, set up the via hole that supplies electric putter to pass on the mounting panel.

Preferably, the range hood further comprises a filter screen and an oil guide plate, and the filter screen and the oil guide plate are obliquely arranged above the second smoke collecting plate; the filter screen is provided with a first flow passage, the flow guide part of the oil guide plate is provided with a second flow passage, and the first flow passage is communicated with the oil cup through the second flow passage.

Preferably, the oil guide plate further comprises an installation part integrally formed with the flow guide part; the installation department is formed with the mounting groove that supplies the filter screen installation, the mouth of crossing that corresponds with the mesh of filter screen is seted up to the bottom of mounting groove.

Preferably, one side of the filter screen close to the flow guide part is provided with a flow-limiting flanging, and the flow-limiting flanging is attached to the groove wall of the mounting groove;

the flow-limiting flanging is provided with a flow guide sheet, the wall of the mounting groove is provided with an oil passing opening corresponding to the flow guide sheet, and the flow guide sheet penetrates through the oil passing opening to enable the first flow passage to be communicated with the second flow passage.

Preferably, the rack comprises a back plate positioned at the rear side of the smoke collection cavity, and the back plate comprises an oil passing groove formed by enclosing a base plate, a mounting plate and a flow limiting sheet; the rear side of the oil guide plate is connected with the flow limiting sheet;

the second flow channel is communicated with the oil passing groove.

Preferably, the bottom of the oil passing groove is provided with an oil leakage hole, the oil cup is positioned right below the oil passing groove, and the opening of the oil cup is upward.

Preferably, the second cigarette gathering plate has a cigarette gathering state, and the second cigarette gathering plate is obliquely arranged in the cigarette gathering state, and the bottom of the second cigarette gathering plate extends to the position right above the oil cup.

Preferably, one end of the second cigarette gathering plate is connected with the rack in a sliding mode along a preset track, so that the second cigarette gathering plate can descend and turn over to a preset position below the cigarette gathering cavity.

In the technical scheme of the invention, the oil cup is arranged below the second smoke collecting plate, so that the oil cup is lifted along with the lifting of the second smoke collecting plate, and the lower side of the second smoke collecting plate is positioned at a low position in a smoke collecting state, so that the distance from the oil cup to the ground is reduced, and the operation of a user on the oil cup is facilitated; after the second smoke collecting plate rises, the oil cup rises along with the second smoke collecting plate, the daily operation of a user is not affected, and therefore the phenomenon that the user touches the oil cup carelessly can be avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a conventional range hood;

FIG. 2 is a schematic structural diagram of an embodiment of the range hood of the present invention;

FIG. 3 is a schematic structural diagram of a range hood according to another embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a range hood according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a range hood according to yet another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a range hood according to an embodiment of the present invention

FIG. 7 is an enlarged view of a portion of FIG. 6 at A;

FIG. 8 is a schematic structural view of the range hood in a closed state according to the present invention;

FIG. 9 is a schematic cross-sectional view taken along line B-B of FIG. 8;

FIG. 10 is a schematic structural view of the range hood in a smoke-collecting state according to the present invention;

FIG. 11 is a schematic cross-sectional view taken at C-C of FIG. 10;

FIG. 12 is a schematic view of the internal structure of a range hood according to an embodiment of the present invention;

fig. 13 is a schematic view of the internal structure of a range hood according to another embodiment of the present invention;

FIG. 14 is a schematic diagram of the internal structure of the rear side of the range hood according to an embodiment of the present invention;

fig. 15 is a schematic view of the internal structure of another embodiment of the rear side of the range hood of the present invention.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Also, the meaning of "and/or" appearing throughout is to include three versions, exemplified by "A and/or B" including either version A, or version B, or versions in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention mainly provides a range hood, which comprises a first smoke collecting plate 410 positioned on the front side of a machine frame 100 and a second smoke collecting plate 420 positioned on the rear side of the machine frame 100, wherein the first smoke collecting plate 410 and the second smoke collecting plate 420 can be mutually independent and movably connected with the machine frame 100. Make range hood have the closure state and hold together the cigarette state, under the closure state, first hold together cigarette board 410 and second and hold together cigarette board 420 average level setting to with the bottom parallel and level in collection smoke chamber, with the opening with collection smoke chamber closed, prevent that the peculiar smell in the collection smoke chamber from giving off to indoor. Under the cigarette gathering state, the first cigarette gathering plate 410 is obliquely arranged towards the front lower part of the rack 100, and the second cigarette gathering plate 420 is obliquely arranged towards the rear lower part of the rack 100, so that the first cigarette gathering plate 410 and the second cigarette gathering plate 420 are arranged in a splayed shape and are enclosed to form a cigarette gathering area. So, when the increase is held together the cigarette region, move down the negative pressure zone, before the flue gas does not scatter, meet first cigarette board 410 or the second and hold together cigarette board 420 to rise under the first guide of holding together cigarette board 410 and second and holding together cigarette board 420, make the flue gas almost all get into and hold together the cigarette region and absorbed the discharge by range hood, the improvement range hood that by a wide margin holds together cigarette and smoke exhaust efficiency. The second smoke gathering plate 420 moves up and down and turns over, so that the second smoke gathering plate 420 can have the best smoke gathering position and the best smoke gathering angle, and the smoke gathering and discharging effects of the range hood are greatly improved. It should be noted that the oil cup 600 of the range hood is connected to the rear side of the second smoke collecting plate 420, so that the oil cup 600 can descend along with the movement of the second smoke collecting plate 420, and a user can install and detach the oil cup 600 conveniently.

The specific structure of the range hood will be mainly described below.

Referring to fig. 1 to 15, in an embodiment of the present invention, the range hood has a smoke collection cavity, and the range hood includes:

the number of the racks 100 is such that,

the first cigarette collecting plate 410, wherein the first cigarette collecting plate 410 is movably connected with the frame 100; and/or the presence of a gas in the gas,

the second cigarette holding plate 420 is movably connected with the rack 100;

the first cigarette gathering plate 410 and the second cigarette gathering plate 420 have cigarette gathering states, and under the cigarette gathering states, a cigarette gathering area surrounded by the first cigarette gathering plate 410 and the second cigarette gathering plate 420 is gradually reduced along the cigarette inlet side of the cigarette gathering cavity to the cigarette outlet side.

Specifically, in the present embodiment, the range hood includes a rack 100, the rack 100 includes a housing 120, and the housing 120 has an air inlet, an air outlet, and a flue system located between the air inlet and the air outlet. Fan assembly 300, etc. is disposed in the flue system, or the air outlet. The frame 100 further includes a smoke collecting cover 130 disposed corresponding to the air inlet, and the smoke collecting cover 130 has a smoke collecting chamber. A check valve 200 is provided at the outlet.

The first cigarette collecting plate 410 is a flat plate, and the first cigarette collecting plate 410 may be made of glass, ceramic, stainless steel, etc., for example, a glass plate. The first cigarette gathering plate 410 has an appearance surface and a cigarette gathering surface which are arranged oppositely, and in a closed state, the appearance surface faces downwards, and the cigarette gathering surface faces upwards; in the cigarette gathering state, the cigarette gathering surface is inclined downwards, and the appearance surface is inclined upwards. The first smoke collecting plate 410 has a front side and a rear side which are oppositely arranged, and in a closed state, the front side is close to the front side of the range hood, and the rear side faces the second smoke collecting plate 420.

The first cigarette gathering plate 410 has multiple movable connection modes, and the movable connection between the first cigarette gathering plate 410 and the rack 100 is one or more of lifting connection, turning connection and sliding connection; that is, the connection may be a single connection with the frame 100 in a lifting manner, a turning manner or a sliding manner, or a combination of any two or three of three movable connections. Wherein, the lifting connection refers to the lifting and descending in the vertical direction relative to the frame 100; the sliding connection is performed according to a preset track, such as sliding towards the front lower part, sliding towards the rear lower part and the like; the turning may be performed by turning or rotating the rotating shaft, and of course, in some embodiments, the turning may also be performed by rotating the hinge point, for example, by turning the rotating shaft.

The second cigarette holding plate 420 is a flat plate, and the second cigarette holding plate 420 may be made of glass, ceramic, stainless steel, or the like, for example, a stainless steel plate. The second cigarette collecting plate 420 has a mounting surface and a cigarette collecting surface which are oppositely arranged, and in a closed state, the cigarette collecting surface faces downwards, and the mounting surface faces upwards; in the cigarette gathering state, the cigarette gathering surface is inclined downwards. The second is held together cigarette board 420 and is had the relative front side and the back side that set up, holds together under the cigarette state, and the front side is close to first cigarette board 410 and is located the top that holds together cigarette board 420 for the second in the collection tobacco cavity, and the back side is close to the bottom that the back side held together cigarette board 420 for the second.

The second cigarette holding plate 420 has multiple movable connection modes, and the movable connection between the second cigarette holding plate 420 and the rack 100 is one or more of lifting connection, turning connection and sliding connection, that is, the second cigarette holding plate can be independently lifted, turned or slid connected with the rack 100, or the combination of any two or three of the three movable connections. Wherein, the lifting connection refers to the lifting and descending in the vertical direction relative to the frame 100; the sliding connection is performed according to a preset track, such as sliding towards the front lower part, sliding towards the rear lower part and the like; the turning may be performed by turning or rotating the rotating shaft, and of course, in some embodiments, the turning may also be performed by rotating the hinge point, for example, by turning the rotating shaft.

The first cigarette holding plate 410 and the second cigarette holding plate 420 can be connected in a plurality of positions, such as the first cigarette holding plate 410 is arranged on the left side of the frame 100, the second cigarette holding plate 420 is arranged on the right side of the frame 100, and the first cigarette holding plate 410 is arranged on the front side of the frame 100, and the second cigarette holding plate 420 is arranged on the rear side of the frame 100. Under the state of smoke collection, the first smoke collection plate 410 extends obliquely from the smoke collection cavity to the front lower part of the range hood, and the second smoke collection plate 420 extends obliquely from the smoke collection cavity to the rear lower part of the range hood. In the closed state, the first cigarette collecting plate 410 and the second cigarette collecting plate 420 are arranged in parallel and flush with the bottom of the cigarette collecting cavity to close the opening of the cigarette collecting cavity. At this time, the smoke collecting cavity is isolated by the first smoke collecting plate 410 and the second smoke collecting plate 420, and the smell inside the smoke collecting cavity will not volatilize, thereby preventing the smell in the range hood from influencing the life of the user.

In this embodiment, the side position of advancing cigarette in collection smoke chamber lies in the below that the opening side lies in collection smoke chamber, and the play cigarette side in collection smoke chamber is close to the flue setting, lies in the top in collection smoke chamber. When the range hood works, smoke enters from the opening side of the smoke collection cavity, enters the flue from the air inlet of the flue, and is discharged from the air outlet after passing through the flue. The first cigarette gathering plate 410 and/or the second cigarette gathering plate 420 are movably connected with the rack 100, so that a cigarette gathering area surrounded by the first cigarette gathering plate 410 and the second cigarette gathering plate 420 can be correspondingly adjusted according to actual working conditions, the cigarette gathering area is located at a proper position and a proper range, smoke escape caused by too small range (too narrow range of the cigarette gathering area or too high range of the cigarette gathering area) is avoided, too large range (too much extension in the front and back directions or too much extension of the first cigarette gathering plate 410 and the second cigarette gathering plate 420 downwards) is avoided, the view of a user is shielded, and the user use is influenced, namely the cigarette gathering area in the embodiment can be suitable for various different working conditions, and the adaptability of the range hood is greatly improved; simultaneously, be the below of gradually expanding the setting through with top-down and hold together the cigarette region and set up at the collection smoke chamber for the flue gas just meets first cigarette board 410 and the second of holding together before scattering and holds together cigarette board 420, hold together under the guide of the cigarette face that holds together of cigarette board 410 and second cigarette board 420, upwards enter into the collection smoke chamber, so, make the flue gas all inhaled collection smoke chamber and discharge through the flue, the phenomenon of having avoided the flue gas to escape appears, the smoking effect of big improvement range hood.

Regarding the movable connection of the first cigarette collecting plate 410 and the frame 100:

the movable connection of the first cigarette gathering plate 410 is described by taking a turnover connection as an example, the first cigarette gathering plate 410 is turned over forwards on the front side of the rack 100, the motor mounting plate 135b is arranged inside the side plate of the rack 100, the speed reducing motor is mounted at the front end of the motor mounting plate 135b, and the motor shaft passes through the through hole at the front end and is fixedly connected with the first connecting rod 132 through the positioning hole. The rear end of the first connecting rod is connected to the rear end of the second connecting rod 133 by a rotating pin. The front end of the second link 133 has a Y-shaped link arm, and the link arm is fixedly and rotatably connected to the rotary page via a rotary pin. The rotating leaf is fixed with the cigarette holding surface of the first cigarette holding plate 410 in a fitting manner, and the fixing manner can be screw fixing or adhesive fixing. On the collection cigarette chamber end wall 131 of gear motor below, seted up the shaft hole, the pivot one end of first cigarette board 410 of holding together with the first front side fixed connection who holds together cigarette board 410, the other end inserts in the shaft hole to make first cigarette board 410 of holding together do the upset with the pivot under the effect of motor, first connecting rod 132 and second connecting rod 133. The other end wall 131 of the smoke collecting cavity is correspondingly provided with the first connecting rod 132, the second connecting rod 133, the rotating shaft of the first smoke collecting plate 410 and the turning page 134, so that the first smoke collecting plate 410 can rotate more stably and reliably.

Of course, in some embodiments, the speed reduction motor may be directly connected to one end of the first cigarette collecting plate 410, that is, the speed reduction motor directly drives the first cigarette collecting plate 410 to rotate.

In some embodiments, in order to reduce the gap between the front side of the first cigarette collecting plate 410 and the front side of the rack 100 (the front side of the bottom of the cigarette collecting cavity) as much as possible, one end of the first cigarette collecting plate 410 is rotatably connected to the rack 100, the front side of the cigarette collecting cavity has an avoiding groove, and the groove depth of the avoiding groove is greater than or equal to the distance between the rotating shaft of the first cigarette collecting plate 410 and the front side of the first cigarette collecting plate 410. In this embodiment, the rotating shaft of the first cigarette gathering plate 410 is installed on the end wall 131 of the cigarette gathering cavity, and when the first cigarette gathering plate 410 rotates, the distance between the rotating shaft and the front side of the first cigarette gathering plate 410 is the rotating radius of the first cigarette gathering plate 410 in the cigarette gathering cavity. When the groove depth of the avoiding groove is equal to or greater than the radius of rotation, the front side of the first cigarette collecting plate 410 can be turned over to the front side close to the cigarette collecting cavity through the avoiding groove. First cigarette board 410 is holding together under the closed condition, and the front side of first cigarette board 410 can be very close to with the front side in collection cigarette chamber, and when setting up the distance between pivot and the preceding lateral wall in collection cigarette chamber into radius of rotation, the direct distance of the preceding side of first cigarette board 410 and the preceding lateral wall in collection cigarette chamber is 0 mm.

In other embodiments, in order to minimize the distance between the two ends of the first smoke collecting plate 410 and the two end walls 131 of the smoke collecting cavity, the included angle between the end wall 131 of the smoke collecting cavity and the bottom is less than or equal to 90 °. The angle between the end wall 131 of the smoke collecting cavity and the bottom is 90 °, i.e. the end wall 131 of the smoke collecting cavity and the bottom are perpendicular to each other. At this time, the end wall 131 of the first cigarette-gathering plate 410 may be very close to the end wall 131 of the cigarette-gathering chamber, and in some embodiments, the distance between the two ends of the first cigarette-gathering plate 410 and the end wall 131 of the cigarette-gathering chamber is 0 mm.

In some embodiments, in order to ensure the horizontal state of the first cigarette collecting plate 410, a limiting member 411 is disposed on the end wall 131 of the cigarette collecting cavity corresponding to the first cigarette collecting plate 410, and when the cigarette guiding side of the first cigarette collecting plate 410 abuts against the limiting member 411, the appearance side of the first cigarette collecting plate 410 and the bottom of the cigarette collecting cavity are located in the same plane. In this embodiment, the limiting member 411 is detachably connected to the end wall 131 of the smoke collection chamber, and the limiting member 411 extends along the width direction of the smoke collection chamber. The limiting member 411 cannot be too soft or too hard, and when the limiting member is too soft, the limiting member is easily extruded by the first cigarette collecting plate 410 to avoid, so that the position of the first cigarette collecting plate 410 is inaccurate; if the hardness is too high, the first cigarette collecting plate 410 may be damaged during the pressing process with the first cigarette collecting plate 410. (when the first cigarette collecting plate 410 is a glass panel, the corner of the first cigarette collecting plate is very easily damaged by a large force.) the position limiting member 411 is made of plastic, which is convenient for production, manufacture and installation, and has a suitable hardness. The bottom of locating part 411 has a limiting plane, and in the process of the motor driving the first cigarette holding plate 410 to rotate, when the cigarette holding surface of the first cigarette holding plate 410 is attached to the limiting plane, the load of the motor is suddenly increased, at this moment, the motor stops working, and the first cigarette holding plate 410 is flush with the bottom of the cigarette collecting cavity. In this embodiment, it is direct to carry on spacingly to first cigarette board 410 of holding together, and not carry on spacingly to actuating mechanism or transmission structure, so for the first very directness of holding together cigarette board 410, avoided leading to the first position inaccuracy of holding together cigarette board 410 because of transmission error. It should be noted that the accuracy requirement of the horizontal position of the first cigarette collecting plate 410 is very strict, and the positioning must be performed by itself to ensure the position accuracy, so that the pure flat state of the first cigarette collecting plate 410 can be effectively ensured.

Regarding the movable connection of the second cigarette holding plate 420 and the rack 100:

in order to enable the second cigarette holding plate 420 to better reach a preset position to hold cigarettes, the rear side of the second cigarette holding plate 420 is connected with the rack 100 through a lifting mechanism, and one end of the second cigarette holding plate 420 is connected with the rack 100 in a sliding mode along a preset track, so that the second cigarette holding plate 420 can descend and overturn to the preset position below the cigarette collecting cavity.

Specifically, in this embodiment, the form of the lifting mechanism may be many, such as by a gear and a rack, by a chain and a sprocket, by a crank-link structure, etc., and for example, by the electric push rod 660, the lifting mechanism includes the electric push rod 660, one end of the electric push rod 660 is fixedly connected to the rack 100, and the other end of the electric push rod 660 is connected to the mounting bracket 650 for mounting the second smoke collecting plate 420, and of course, in some embodiments, the other end of the electric push rod 660 may be directly connected to the rear side of the second smoke collecting plate 420. The one end of cigarette board 420 is held together to the second and frame 100 sliding connection's mode has a lot, if realize through the mode of spout and slip post 421b, also can realize through setting up the multistage connecting rod (the one end of connecting rod is held together cigarette board 420 with the second tip and is rotated and be connected, realizes the connecting rod between the multistage connecting rod and removes, holds together cigarette board 420 through multistage connecting rod and second promptly and rotates and be connected to realize that the second holds together cigarette board 420's rotation and removal).

In this embodiment, through elevating system's setting, make the second hold together cigarette board 420 and can move in vertical direction, set up to slide according to predetermineeing the orbit with frame 100 through the one end that holds together cigarette board 420 with the second, make the second hold together the in-process of the rear side of cigarette board 420 at the lift, whole second holds together cigarette board 420 and rotates, thus, make the second hold together the position and the inclination of cigarette board 420 and change along with elevating system's drive, make the second hold together cigarette board 420 and can select suitable cigarette position of holding together according to actual conditions, make the user can be suitable cigarette position of holding together according to the demand, thereby by a wide margin improvement range hood's adaptability and hold together the cigarette effect.

The following is directed to a specific movable connection structure of the second cigarette holding plate 420, the lifting mechanism includes a lifting device and a mounting bracket 650, the rear side of the second cigarette holding plate 420 is hinged to the mounting bracket 650, and the mounting bracket 650 is connected to the rack 100 through the lifting device. The lifting device takes an electric push rod 660 as an example, and the rear side of the second cigarette gathering plate 420 is hinged to the mounting bracket 650, so that the second cigarette gathering plate 420 is rotatably connected with respect to the mounting bracket 650. The mounting bracket 650 is a strip-shaped arrangement, extends along the length direction of the second cigarette holding plate 420 between the mounting, and is hinged at a plurality of positions between the mounting bracket and the second cigarette holding plate 420 to improve the mounting stability of the second cigarette holding plate 420.

One end of the second cigarette gathering plate 420 is provided with a sliding column 421b or a sliding plate 421, and the sliding plate 421 is provided with a sliding groove; a sliding plate 421 is arranged on the frame 100 corresponding to the sliding column 421b, or a sliding column 421b is arranged corresponding to the sliding plate 421, and the sliding column 421b is installed in the sliding groove, so that the second cigarette holding plate 420 performs combined movement of lifting and turning. Wherein, the second cigarette holding plate 420 is lifted up and down, and the hinge rotating shaft of the second cigarette holding plate 420 and the mounting bracket 650 rotates as a rotating shaft. Taking the sliding plate 421 fixed to the mounting surface of the second smoke collecting plate 420 as an example, the sliding column 421b is mounted to the end wall 131 of the smoke collecting chamber, and the sliding groove 421a is opened in the sliding plate 421 in the front-rear direction. It is worth to say that the included angle between the sliding groove 421a and the second cigarette gathering plate 420 may be greater than 0 degree, and the deflection angle between the second cigarette gathering plate 420 and the horizontal plane in the movement process may be realized by adjusting the included angle between the sliding groove 421a and the second cigarette gathering plate 420, so as to adjust the cigarette gathering angle during the second cigarette gathering plate 420.

In some embodiments, in order to protect the electric push rod 660, the electric push rod 660 is disposed inside the smoke collection cavity, the rack 100 includes a back plate 135 located at the rear side of the smoke collection cavity, the back plate 135 includes a base plate 135a and a mounting plate 135b extending from the base plate 135a to the inside of the smoke collection cavity, and a through hole for the electric push rod 660 to pass through is opened on the mounting plate 135 b. The base plate 135a is arranged along the vertical direction, the mounting plate 135b is arranged along the horizontal direction, the electric push rod 660 can be protected by the base plate 135a, the influence of external environment factors is avoided, the mounting plate 135b can further limit the motion track of the electric push rod 660, and therefore the electric push rod 660 can work more stably and reliably.

In order to further improve the working stability of the second cigarette collecting plate 420, the lifting mechanism further comprises a guide rail 680 and a sliding block 670, and the guide rail 680 or the sliding block 670 is mounted on the mounting plate 135 b; a slide block 670 is arranged on the mounting bracket 650 corresponding to the guide rail 680, or a guide rail 680 is arranged corresponding to the slide block 670; the slide block 670 is provided with a sliding groove for mounting the guide rail 680. Specifically, in this embodiment, the slider 670 is mounted on the mounting plate 135b, and the guide rail 680 is mounted on the mounting bracket 650. The slider 670 is provided with a guide groove extending in the vertical direction, and the guide rail 680 is installed in the guide groove. When the lifting device drives the mounting bracket 650 to move up and down, the guide rail 680 moves up and down along with the mounting bracket 650, and the slide block 670 is fixed with the mounting plate 135 b. In some embodiments, to improve the mounting stability of the slider 670 and the rail 680, a slider bracket 671 and a rail bracket 681 are respectively provided. The slider bracket 671 is L-shaped, and has one portion fixedly connected to the mounting plate 135b and the other portion fixedly connected to the slider 670. The number of the sliding blocks 670 and the guide rails 680 is plural, and the sliding blocks 670 and the guide rails 680 are respectively disposed at both sides of the electric push rod 660 (both ends of the mounting bracket 650 and the back plate 135), wherein the electric push rod 660 is connected to the middle of the mounting bracket 650. Thus, the stability of the lifting process of the mounting bracket 650 is improved.

In this embodiment, by providing the guide rail 680 and the sliding block 670, the limit of the lifting connection between the mounting bracket 650 and the rack 100 is increased, so that the lifting connection of the mounting bracket 650 is more stable.

In some embodiments, in order to improve the bearing capacity and the working stability of the second smoke collecting plate 420, the range hood further includes a reinforcing plate 422, and the reinforcing plate 422 is attached to a surface of the second smoke collecting plate 420, which faces away from the smoke inlet of the smoke collecting cavity. The reinforcing plate 422 is a flat plate made of a hard material such as stainless steel. A reinforcing plate 422 is attached to the mounting surface of the second cigarette holding plate 420. One side of the reinforcing plate 422 is flush with the front side of the second cigarette holding plate 420, and the other side extends to the rear side of the second cigarette holding plate 420. Through reinforcing plate 422's setting for the second intensity of holding together cigarette board 420 obtains increasing, is favorable to improving its bearing capacity, is favorable to improving life.

In order to further improve the strength of the second cigarette gathering plate 420, the second cigarette gathering plate 420 is connected with the lifting structure through a mounting bracket 650, and the second cigarette gathering plate 420 is hinged with the mounting bracket 650 through a hinge structure 423; hinge structure 423 includes the fixed plate 423a and the stationary blade of pin joint, the stationary blade with installing support 650 fixed connection, fixed plate 423a is attached on the second is held together cigarette board 420 and is back to the face that the collection cigarette chamber advances the cigarette mouth, just fixed plate 423a extends to reinforcing plate 422 is close to one side of installing support 650. The fixing plate 423a is attached and fixed to the mounting surface of the second cigarette collecting plate 420. By extending the fixing plate 423a to the rear side of the reinforcing plate 422, the part of the second cigarette gathering plate 420 not provided with the reinforcing plate 422 is also sufficiently reinforced, thereby further improving the bearing capacity of the second cigarette gathering plate 420.

In some embodiments, in order to sufficiently ensure the cigarette gathering effect, the size, the position size, the deflection angle, and the like of the first cigarette gathering plate 410 and the second cigarette gathering plate 420 are defined as follows:

in order to ensure that the cigarette collecting range of the first cigarette collecting plate 410 is reasonable, in a cigarette collecting state, an included angle gamma between the first cigarette collecting plate 410 and a horizontal plane is 115-155 degrees, and 135-145 degrees are taken as an example. In the smoke gathering process, the included angle gamma is not too large or too small, when the included angle gamma is too large, the first smoke gathering plate 410 extends forwards more, the operation of a user on the cooker is not facilitated, and when the included angle gamma is too small, smoke cannot be gathered completely.

In order to ensure that the cigarette gathering range of the second cigarette gathering plate 420 is reasonable, in the cigarette gathering state, the included angle theta between the second cigarette gathering plate 420 and the horizontal plane is 7-90 degrees, or 30-60 degrees. The included angle theta should not be too large, should not be too small, and when too small, the position of second holding together cigarette board 420 bottom is on the upper side, will lead to the flue gas to escape, and when too big, the distance that second held together cigarette board 420 top apart from the air inlet is great, is unfavorable for the absorption of flue gas.

In order to ensure that the cigarette gathering position of the second cigarette gathering plate 420 is reasonable, the distance H between the rear side of the second cigarette gathering plate 420 and the bottom of the cigarette gathering cavity is greater than or equal to 45 mm. When the distance is greater than or equal to 45mm, the cigarette gathering effect of the second cigarette gathering plate 420 is better.

In order to sufficiently ensure the smoke collecting effect of the range hood, in a smoke collecting state, a distance L between the bottom of the first smoke collecting plate 410 and the rear side of the rack 100 is greater than or equal to 400 mm.

In order to avoid oil on the filter screen 500 to drop into the installation side of the second smoke collecting plate 420, the range hood further comprises the filter screen 500, the filter screen 500 is located above the smoke collecting area, and under a smoke collecting state, the top of the second smoke collecting plate 420 and the horizontal distance K between the screen holes at the rear side of the filter screen 500 are greater than 0. Take 6 ~ 12mm as an example, simultaneously, in order to guarantee the second and hold together cigarette board 420 hold together cigarette effect, the second is held together cigarette board 420 the top and should not too big apart from the horizontal distance of mesh, also should not too little, will lead to the second to hold together cigarette board 420 the top apart from the distance of air inlet far away when too big, too little, if the oil spills from filter screen 500, probably fall on the second holds together cigarette board 420's installation face.

In order to abundant limited hold together the regional optimal position of cigarette, the width of first holding together cigarette board 410 is a, the width b of cigarette board 420 is held together to the second, the height H that cigarette board 420 descends is held together to the second, first holding together the contained angle gamma between cigarette board 410 and the horizontal plane, the contained angle theta between cigarette board 420 and the horizontal plane is held together to the second, the complete machine width D of lampblack absorber, the width delta D in collection cigarette chamber is stretched out to the bottom of first holding together cigarette board 410, distance M between the articulated joint of second holding together cigarette board 420 and the frame 100 rear side, hold together under the cigarette state first front side of holding together cigarette board 410 and the collection cigarette chamber front side distance c between the bottom, the relation between satisfies:

wherein, Delta D is more than or equal to 0mm and less than or equal to 50 mm; gamma is more than or equal to 0 degree and less than or equal to 145 degrees; c is more than or equal to 0mm and less than or equal to 40 mm; d is more than or equal to 350mm and less than or equal to 480 mm; m is more than or equal to 10mm and less than or equal to 50 mm; theta is not less than 7 degrees.

Wherein, the width a of the first cigarette holding plate 410, the width b of the second cigarette holding plate 420, and the height H of the second cigarette holding plate 420, can be designed and adjusted according to different working conditions, and certainly, under the condition that the parameters of the range hood itself such as the width a of the first cigarette holding plate 410, the width b of the second cigarette holding plate 420, etc., are certain, the requirement of the best cigarette holding area can be satisfied by adjusting other parameters.

The range hood further comprises an oil cup 600, the oil cup 600 is connected with the rear side of the second smoke collecting plate 420, and the oil cup 600 is located below the second smoke collecting plate 420 and ascends and descends along with the ascending and descending of the second smoke collecting plate 420, so that the oil cup 600 can descend to a position far away from the smoke collecting cavity.

Specifically, in this embodiment, the oil cup 600 is disposed in a long strip shape, and the oil cup 600 may be directly mounted on the rear side of the second smoke collecting plate 420, or may be indirectly connected with the rear side of the second smoke collecting plate 420 through another structure. The lifting mechanism comprises a lifting device and a mounting bracket 650, the rear side of the second smoke collecting plate 420 is hinged to the mounting bracket 650, and the oil cup 600 is fixedly connected with the mounting bracket 650; the mounting bracket 650 is connected to the frame 100 in a lifting manner through the lifting device. The mounting bracket 650 is arranged in a long strip shape, the oil cup 600 is located below the mounting bracket 650, and two ends of the oil cup 600 are detachably connected with two ends of the mounting bracket 650 respectively.

In this embodiment, the oil cup 600 is disposed below the second smoke gathering plate 420, so that the oil cup 600 is lifted along with the lifting of the second smoke gathering plate 420, and in a smoke gathering state, the lower side of the second smoke gathering plate 420 is located at a low position, so that the distance from the oil cup 600 to the ground is reduced, and the operation of the oil cup 600 by a user is facilitated; after the second smoke collecting plate 420 rises, the oil cup 600 rises along with the second smoke collecting plate, so that the daily operation of a user is not influenced, and the phenomenon that the user carelessly touches the oil cup 600 can be avoided.

In some cases, in order to avoid oil dripping of the range hood, the range hood further comprises a filter screen 500 and an oil guide plate 550, and the filter screen 500 and the oil guide plate 550 are obliquely arranged above the second smoke collecting plate 420; the filter screen 500 has a first flow passage, and the guide portion 552 of the oil guide plate 550 has a second flow passage, and the first flow passage is communicated with the oil cup 600 through the second flow passage.

Specifically, in this embodiment, the second flow channel is communicated with the first flow channel, so that oil drops dropping onto the filter screen 500 can smoothly flow onto the oil guide portion of the oil guide plate 550, thereby effectively preventing the oil drops from collecting on the filter screen 500 and preventing the oil drops on the filter screen 500 from dropping onto the cooking bench. Specifically, the structure of the filter screen 500 may be various, such as a grid structure or a dense-mesh structure, and is not particularly limited herein. The filter screen 500 has a first flow passage, wherein the first flow passage may be formed in various manners, for example, the first flow passage is formed by a groove concavely formed on the upper surface of the filter screen 500; for another example, the first flow channel is formed by surrounding a rib protruding from the upper surface of the filter screen 500. Similarly, the second flow channel on the flow guide portion 552 may be formed in various manners, which are not described herein. The filter screen 500 and the oil guide plate 550 can be arranged in an integrated manner, and certainly, in order to facilitate disassembly and assembly, the filter screen 500 and the oil guide plate 550 can also be detachably connected, for example, the filter screen is connected with a buckle, the filter screen is connected with a magnetic attraction connector, a screw is connected, and the like. The oil passing through the second flow passage flows into the oil cup 600 to be stored.

In this embodiment, the filter screen 500 and the oil guide plate 550 are disposed on the smoke inlet side of the smoke collection cavity of the range hood, wherein the filter screen 500 has a first flow channel, and the oil guide plate 550 includes an oil guide portion having a second flow channel communicated with the first flow channel. Therefore, oil drops dropping on the filter screen 500 can smoothly flow to the oil guide part of the oil guide plate 550 and flow into the oil cup 600 from the oil guide part for storage, so that the oil drops are effectively prevented from being accumulated on the filter screen 500, the oil drops on the filter screen 500 are prevented from dropping on a cooking bench, and the oil drops of the range hood are further prevented.

In some embodiments, in order to improve the stability of the connection between the oil guide plate 550 and the filter screen 500, the oil guide plate 550 further includes a mounting portion 551 integrally formed with the flow guide portion 552; the mounting portion 551 is formed with a mounting groove 554 for mounting the filter screen 500, and the bottom of the mounting groove 554 is opened with a smoke passing hole 553 corresponding to the mesh of the filter screen 500. The front side (the side close to the mounting plate 135 b) of the oil guide plate 550 is connected to the front side wall of the smoke collection chamber, and the rear side of the oil guide plate 550 is connected to the back plate 135 of the smoke collection chamber. By installing the filter screen 500 into the installation groove 554, the relative position of the filter screen 500 and the oil guide plate 550 is more reliable.

In order that the oil on the filter screen 500 can smoothly flow into the oil guide plate 550 and does not leak, a flow-limiting flange is arranged on one side of the filter screen 500 close to the flow guide portion 552, and the flow-limiting flange is attached to the groove wall of the mounting groove 554; a flow guide sheet is formed on the flow-limiting flanging, an oil passing opening is formed on the wall of the mounting groove 554 corresponding to the flow guide sheet, and the flow guide sheet penetrates through the oil passing opening to enable the first flow passage and the second flow passage to be communicated. The oil flows into the oil guiding portion of the oil guiding plate 550 through the oil passing opening by the flow guiding plate, and continues to flow along the second flow channel on the oil guiding portion. Through the arrangement of the flow limiting flanging, oil can only flow through the oil passing port, so that oil leakage from other positions of the oil guide plate 550 is avoided.

In order to make the oil on the oil guide plate 550 smoothly enter the oil cup 600, the frame 100 includes a back plate 135 located at the rear side of the smoke collection cavity, and the back plate 135 includes an oil passing groove surrounded by a base plate 135a, a mounting plate 135b and a restrictor plate 135 c; the rear side of the oil guide plate 550 is connected with a flow restriction sheet 135 c; the second flow channel is communicated with the oil passing groove.

Specifically, in this embodiment, the mounting plate 135b extends along the length direction of the rack 100, the base plate 135a and the flow restriction piece 135c are respectively disposed at two opposite sides of the mounting plate 135b, so that the base plate 135a, the mounting plate 135b, and the flow restriction piece 135c enclose to form an oil passing groove, and the second flow passage is communicated with the oil passing groove. The communication mode is various, the rear side of the oil guide plate 550 may not be provided with any structure, and the rear side of the oil guide plate 550 directly extends into the oil passing groove to guide the oil into the oil passing groove. Of course, the rear side of the oil guide plate 550 may also be provided with a flow-limiting rib, and then the flow-limiting rib is provided with an oil hole or a notch for oil to pass through. The oil entering the oil passing groove continuously flows downwards to the oil cup 600, specifically, an oil leakage hole is formed in the bottom of the oil passing groove, the oil cup 600 is located right below the oil passing groove, and the opening of the oil cup 600 is upward. The oil leakage hole can be a through hole for the guide rail 680 or the lifting structure to pass through, or an oil leakage hole specially provided for oil leakage. Oil drops to the mounting bracket 650 through the oil leak hole or directly drops into the oil cup 600 under the action of gravity. The oil dropped onto the mounting bracket 650 may flow into the oil cup 600 below through a via hole opened in the mounting bracket 650.

In some embodiments, in order to further prevent oil from dropping onto the cooking bench, the second smoke collecting plate 420 has a smoke collecting state in which the second smoke collecting plate 420 is disposed obliquely, and the bottom of the second smoke collecting plate 420 extends to a position right above the oil cup 600. When an accident occurs and the oil guide plate 550 leaks, the second smoke collecting plate 420 can guide the oil into the oil cup 600, so as to avoid polluting the cooking bench below the range hood or prevent the oil from dropping onto the user.

In some embodiments, in order to avoid oil leakage caused by oil drops formed on the top of the cabinet 110, the range hood includes:

the oil smoke exhaust device comprises a case 110, a fan and a fan, wherein the case 110 is provided with an accommodating cavity, and the lower end of the case 110 is provided with an oil smoke suction inlet communicated with the accommodating cavity; and

the fan is arranged in the accommodating cavity, and an air inlet cavity formed by enclosing the fan and the case 110 is formed at one side of an air inlet of the fan;

lead oily piece, locate the air inlet intracavity, it has the water conservancy diversion face that the slope set up to lead oiled-plate 550, the water conservancy diversion face covers the top in air inlet chamber, the peak of water conservancy diversion face is not less than the peak of air intake, the nadir of water conservancy diversion face with the lateral wall butt in air inlet chamber to form the condensation in the oil droplet of water conservancy diversion face guides air inlet intracavity lateral wall. Wherein, the oil guide piece takes the guide plate arranged in a herringbone manner as an example, and two side plates of the guide plate are respectively tangent with the air inlet of the fan. Of course, in some embodiments, if the wind deflector is loaded on the wind inlet, the two side plates are respectively tangent to the outer ring of the wind deflector. So as to cover the top of the air inlet cavity under the condition of not influencing the air inlet of the fan. Through the setting of leading oil spare, avoid a large amount of and the top contact of air inlet chamber of flue gas to make the greasy dirt of flue gas form at the one side of leading oil spare towards the air inlet chamber, and by the lateral wall of water conservancy diversion face guide to the air inlet chamber (flow to oil cup 600 along the lateral wall in air inlet chamber, or other oil storage structures), thereby avoid the greasy dirt to drip on the top of a kitchen range.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a range hood, its characterized in that, range hood has collection smoke chamber, range hood includes:

a machine frame, a plurality of guide rails and a plurality of guide rails,

the second cigarette gathering plate is provided with a front side edge and a rear side edge which are oppositely arranged, the rear side of the second cigarette gathering plate is connected with the rack in a lifting mode, and one end, far away from the rear side edge, of the second cigarette gathering plate is connected with the rack in a sliding mode along a preset track, so that the second cigarette gathering plate can descend and turn to a preset position below the cigarette gathering cavity;

the oil cup is connected with the rear side of the second smoke collecting plate and ascends and descends along with the ascending and descending of the second smoke collecting plate, so that the oil cup can descend to a position far away from the smoke collecting cavity;

2. The range hood as claimed in claim 1, wherein the mounting bracket is arranged in a strip shape, the oil cup is positioned below the mounting bracket, and two ends of the oil cup are detachably connected with two ends of the mounting bracket respectively.

3. The range hood as claimed in claim 1, wherein the elevating means includes an electric push rod, one end of the electric push rod is fixedly connected with the frame, and the other end is connected with the mounting bracket.

4. The range hood as claimed in claim 3, wherein the frame includes a back plate located at the rear side of the smoke collection chamber, the back plate includes a base plate and a mounting plate extending from the base plate to the inside of the smoke collection chamber, and the mounting plate is provided with a via hole for the electric push rod to pass through.

5. The range hood as claimed in claim 1, further comprising a filter screen and an oil guide plate, wherein the filter screen and the oil guide plate are obliquely arranged above the second smoke collecting plate; the filter screen is provided with a first flow passage, the flow guide part of the oil guide plate is provided with a second flow passage, and the first flow passage is communicated with the oil cup through the second flow passage.

6. The range hood as claimed in claim 5, wherein the oil guide plate further comprises a mounting portion integrally formed with the flow guide portion; the installation department is formed with the mounting groove that supplies the filter screen installation, the mouth of crossing that corresponds with the mesh of filter screen is seted up to the bottom of mounting groove.

7. The range hood as claimed in claim 5, wherein the frame includes a back plate located at a rear side of the smoke collection chamber, the back plate including an oil passing groove defined by a base plate, a mounting plate and a restrictor plate; the rear side of the oil guide plate is connected with the flow limiting sheet;

the second flow channel is communicated with the oil passing groove.

8. The range hood as claimed in claim 7, wherein the oil passing groove is provided at the bottom thereof with an oil leakage hole, the oil cup is positioned right below the oil passing groove, and the opening of the oil cup is upward.

9. The range hood as claimed in claim 1, wherein the second smoke collecting plate has a smoke collecting state, the second smoke collecting plate is inclined in the smoke collecting state, and the bottom of the second smoke collecting plate extends to a position right above the oil cup.