CN212081371U - Smoke exhaust ventilator - Google Patents

Abstract

The application provides a range hood, including air guide case, fan case, panel, guide rail set spare and drive panel along the gliding actuating mechanism of guide rail set spare, the air guide case includes the front bezel, and the front bezel includes preceding baffle and by preceding baffle's downside backward and downwardly extending's preceding baffle, has seted up the air inlet on the preceding baffle. By arranging the front guide plate and the front baffle plate, the included angle between the front guide plate and the horizontal direction is smaller than that between the front baffle plate and the horizontal direction, so that the occupied space of the front baffle plate can be reduced, a larger space is formed at the front side of the front baffle plate, and the cooking operation is convenient; set up the air inlet on the baffle in the front to set up panel, guide rail set spare and actuating mechanism, when shutting down, can make the panel cover on the air inlet, the air guide case wholeness is good, and during the start, actuating mechanism can promote the panel and move down along guide rail set spare and paste on the front baffle, both can guide oil smoke to air inlet, can avoid the oil smoke to get into the panel back again, convenient cleanness.

Description

Smoke exhaust ventilator

Technical Field

The application belongs to the field of household appliances, and particularly relates to a range hood.

Background

The motion panel of the current range hood is opened by turning and translating. The formula panel is opened in the upset, when outwards opening, shelters from user's sight easily to when stir-fry top spoon, turn over actions such as stir-fry, the panel is touched easily to the slice. The translation formula panel is parallel with panel setting and box preceding curb plate to drive the panel and slide in the front on the curb plate, however the whole slope of preceding curb plate of this kind of range hood's box, the upper portion of box can occupy great space, when stir-fry top spoon, turn over actions such as stir-fry, the box is touched to the slice easily.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a range hood to solve the range hood that exists among the prior art when the culinary art operation, the problem of box is run into easily to the slice.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions: the range hood comprises an air guide box and a fan box arranged on the air guide box, wherein the fan box is communicated with the top of the air guide box, the air guide box comprises a back plate, a front plate arranged on the front side of the back plate and two side plates supporting the two sides of the front plate, the two side plates are respectively arranged on the two sides of the back plate, the front plate comprises a front baffle plate and a front guide plate arranged below the front baffle plate, the front guide plate is arranged in a horizontal direction in an inclined mode, the included angle between the front guide plate and the horizontal direction is smaller than the included angle between the front baffle plate and the horizontal direction, and an air inlet is formed in the front baffle plate; the range hood also comprises a panel covered on the air inlet, a guide rail assembly used for guiding the panel to move to be attached to the front guide plate, and a driving mechanism used for driving the panel to slide along the guide rail assembly to open or close the air inlet; the driving mechanism and the guide rail assembly are arranged in the air guide box, and the panel is connected with the guide rail assembly.

In one embodiment, the guide rail assembly includes a rail mounted to the side panel or the front panel, and a slider slidably disposed on the rail; the sliding piece is connected with the panel, the rail is installed on the side plate and comprises a first section parallel to the front baffle plate and a second section which is bent and extended downwards from the lower end of the first section and towards the direction of the back plate, and the second section extends to the position corresponding to the front guide plate.

In one embodiment, the rail further comprises a third section extending from the upper end of the first section and bending upwards and towards the back plate.

In one embodiment, the back of the panel is provided with a connecting plate, and the sliding member is mounted on the connecting plate.

In one embodiment, the rail is a slide having a sliding slot, and the sliding member is a sliding shaft slidably disposed in the sliding slot.

In one embodiment, the guide rail assemblies are respectively arranged on two sides of the air guide box.

In one embodiment, the driving mechanism comprises a push rod for pushing the panel to move along the guide rail assembly, a support seat arranged in the air guide box, and a swinging assembly for driving the push rod to swing; one end of the push rod is rotatably arranged on the support, the other end of the push rod is hinged with the panel, and the swinging assembly is arranged in the air guide box.

In one embodiment, the swing assembly comprises an electric cylinder driving the push rod to swing and a hinged seat installed in the air guide box, one end of the electric cylinder is hinged to the hinged seat, and the other end of the electric cylinder is hinged to the push rod.

In one embodiment, the swing assembly further comprises a connecting rod, one end of the connecting rod is hinged with the other end of the electric cylinder, and the other end of the connecting rod is fixedly connected with the push rod.

In one embodiment, the connecting rod and the push rod are integrally formed, and the connecting rod and the push rod are arranged in a V shape.

In one embodiment, a shield is mounted in the air guide box, and the electric cylinder and the hinge seat are arranged in the shield.

In one embodiment, the support and the push rod are respectively arranged on two sides of the air guide box.

In one embodiment, the front baffle plate is at an angle ranging from 80 degrees to 100 degrees with respect to the horizontal.

The range hood provided by the embodiment of the application has the beneficial effects that: compared with the prior art, the range hood is provided with the front guide plate and the front baffle plate, and the included angle between the front guide plate and the horizontal direction is smaller than that between the front baffle plate and the horizontal direction, so that the occupied space of the front baffle plate can be reduced, a larger space is formed at the front side of the front baffle plate, and the cooking operation is convenient; set up the air inlet on the baffle in the front to set up panel, guide rail set spare and actuating mechanism, when shutting down, can make the panel cover on the air inlet, the air guide case wholeness is good, and during the start, actuating mechanism can promote the panel and move down along guide rail set spare and paste on the front baffle, both can guide oil smoke to air inlet, can avoid the oil smoke to get into the panel back again, convenient cleanness.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a range hood provided in an embodiment of the present application when a panel is closed.

Fig. 2 is a schematic structural diagram of a range hood provided in an embodiment of the present application when a panel is opened.

Fig. 3 is a schematic front view of the range hood shown in fig. 2.

Fig. 4 is a sectional view of the structure taken along line a-a of fig. 3.

Fig. 5 is a schematic cross-sectional structural view of a range hood according to an embodiment of the present disclosure when a panel is closed;

fig. 6 is a schematic structural diagram of a driving mechanism, a rail assembly and a panel assembly according to a second embodiment of the present application.

Fig. 7 is a schematic structural diagram of a driving mechanism, a rail assembly and a panel assembly according to a third embodiment of the present application.

Fig. 8 is a schematic structural diagram of a driving mechanism, a rail assembly and a panel assembly according to a fourth embodiment of the present disclosure.

Wherein, in the drawings, the reference numerals are mainly as follows:

100-range hood;

10-a fan box;

20-air guide box; 21-a front plate; 211-front baffle; 212-a front guide; 22-a back plate; 23-side plate; 24-an air inlet; 25-oil receiving groove;

30-a panel; 31-a connecting plate;

40-a guide rail assembly; 41-track; 41 a-slide; 41 b-a slide rail; 410-a chute; 411-first paragraph; 412-second segment; 413-a third stage; 42-a slide; 42 a-sliding shaft; 42 b-a slider;

50-a drive mechanism; 51-a push rod; 52-a support; 53-a swing assembly; 531-electric cylinder; 532-hinged seat; 533-link; 54-a winder; 55-a first strap; 56-a first direction-changing wheel; 57-a second strap; 58-second direction-changing wheel.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

Furthermore, the terms "first", "second" and "first" are used 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Reference throughout this specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 and 4, for convenience of description, three directions perpendicular to each other in space are defined as: the air guide box comprises a vertical direction (namely an up-down direction), a front-back direction and a left-right direction, when the corresponding air guide box is used, the height of the air guide box is along the up-down direction, the thickness of the air guide box is along the front-back direction, the width of the air guide box is along the left-right direction, and the front side or the front of the air guide box is the direction close to a user on the air guide box when the air guide box is used; the rear side or the rear part of the air guide box is the direction far away from the user on the air guide box when in use; the two sides of the air guide box guide the two sides of the air guide box in the vertical direction.

Referring to fig. 1 and 4, a range hood 100 provided by the present application will now be described. The range hood 100 comprises an air guide box 20, a fan box 10, a panel 30, a guide rail assembly 40 and a driving mechanism 50; wherein, the fan box 10 is used for generating negative pressure to suck air; the air guide box 20 is used for guiding air into the fan box 10, the fan box 10 is installed on the air guide box 20, and the fan box 10 is communicated with the top of the air guide box 20, so that the air guide box 20 guides oil smoke into the fan box 10. The air guide box 20 comprises a back plate 22, a front plate 21 and two side plates 23, wherein the front plate 21 is arranged on the original front side of the back plate 22, the two side plates 23 are respectively arranged on two sides of the back plate 22, and the two side plates 23 support two sides of the front plate 21, so that the back plate 22, the front plate 21 and the two side plates 23 enclose the air guide box 20. Front bezel 21 includes preceding baffle 211 and preceding baffle 212, preceding baffle 212 sets up in the below of preceding baffle 211, preceding baffle 212 slopes to set up in the horizontal direction, preceding baffle 212 is less than preceding baffle 211 and horizontal direction contained angle with the horizontal direction contained angle to reduce preceding baffle 211 occupation space, make the front side of preceding baffle 211 form a great space, make things convenient for the culinary art operation, avoid when stir-fry top spoon, stir-fry actions such as, baffle 211 before the slice is touchhed easily. Referring to fig. 2 and 3, the front baffle 211 is provided with an air inlet 24, so that, in use, the oil smoke enters the air guiding box 20 through the air inlet 24. The panel 30 is adapted to cover the air inlet 24 so that the panel 30 can cover the air inlet 24 when the engine is shut down, thereby providing the air guide box 20 with good integrity and good appearance while preventing the backflow of smoke. The rail assembly 40 and the driving mechanism 50 are installed in the air box 20 to support and protect the rail assembly 40 and the driving mechanism 50 through the air box 20. The guide rail assembly 40 is connected with the panel 30 to guide the panel 30 to move, and the driving mechanism 50 can drive the panel 30 to move along the guide rail assembly 40, so that the panel 30 moves downwards and turns backwards to be attached to the front guide plate 212 to open the air inlet 24; and the drive mechanism 50 may push the faceplate 30 upward along the rail assembly 40 to cover the air inlet 24 in the front guide 212. Thus this range hood 100, when the start-up during operation, actuating mechanism 50 can drive panel 30 and move down along guide rail assembly 40, and make panel 30 paste on front guide 212 to can avoid the oil smoke to get into the panel 30 back, convenient cleanness, and panel 30 can also guide the oil smoke rebound, in order to get into air inlet 24, can play certain cigarette effect of holding together, can not shelter from user's sight moreover, also can avoid influencing operations such as user's stir-fry dish top spoon, stir-fry. When the air guide box is shut down, the driving mechanism 50 can drive the panel 30 to move upwards along the guide rail assembly 40, so that the panel 30 covers the air inlet 24, smoke backflow is prevented, and meanwhile, the air guide box 20 is good in integrity and attractive in appearance.

According to the range hood 100 provided by the embodiment of the application, the front guide plate 212 and the front baffle 211 are arranged, and the included angle between the front guide plate 212 and the horizontal direction is smaller than that between the front baffle 211 and the horizontal direction, so that the occupied space of the front baffle 211 can be reduced, a larger space is formed at the front side of the front baffle 211, and the cooking operation is facilitated; the front baffle 211 is provided with the air inlet 24, the panel 30, the guide rail assembly 40 and the driving mechanism 50, when the device is stopped, the panel 30 can cover the air inlet 24, the air guide box 20 has good integrity, and when the device is started, the driving mechanism 50 can push the panel 30 to move downwards along the guide rail assembly 40 and be attached to the front guide plate 212, so that oil smoke can be guided to the air inlet 24, the oil smoke can be prevented from entering the back of the panel 30, and the device is convenient to clean.

In one embodiment, referring to fig. 2 and 4, the angle between the front baffle 211 and the horizontal direction is in the range of 80 degrees to 100 degrees, so as to ensure that the front side of the front baffle 211 has a larger space. In one embodiment, the front baffle 211 is vertically disposed, and certainly allows a certain error or inclination angle, for example, the front and the rear can be inclined by about 10 degrees, so that the included angle between the front baffle 211 and the horizontal direction is 80-100 degrees, which is convenient for design, and the front side of the front baffle 211 has a larger space to avoid affecting the cooking operation of the user.

In one embodiment, referring to fig. 2 and 3, the fan box 10 is disposed above the air guiding box 20, so that the fan box 10 avoids the corresponding position of the air inlet 24, and noise in the fan box 10 is prevented from directly coming out from the air inlet 24, thereby reducing operation noise.

In one embodiment, an oil receiving groove 25 is detachably installed at a lower end of the air guide box 20 to collect oil condensed in the soot.

In one embodiment, referring to fig. 4 and 5, the guide rail assembly 40 includes a rail 41 and a sliding member 42, the sliding member 42 is connected to the panel 30 to support the panel 30, and the sliding member 42 is slidably mounted on the rail 41 to guide the movement of the sliding member 42 and thus the panel 30. In one embodiment, rails 41 are mounted to side plates 23 to facilitate securing rails 41. In some embodiments, the rails 41 may also be mounted on the front plate 21. The track 41 comprises a first section 411 and a second section 412, the first section 411 being arranged parallel to the front baffle 211 to guide the sliding of the slider 42 with the panel 30 parallel to the front baffle 211; the second section 412 is bent and extended backwards and downwards from the lower end of the first section 411, that is, the second section 412 is bent and extended downwards from the lower end of the first section 411 and towards the direction of the back plate 22, and the second section 412 is extended to the position corresponding to the front guide plate 212, during the downward movement of the panel 30, the sliding member 42 is moved from the first section 411 to the second section 412, so as to guide the panel 30 to move downwards and backwards, so that the panel 30 is moved to the right front side of the front guide plate 212 and attached to the front guide plate 212, so as to open the air inlet 24 and play a role of gathering the smoke. The slider 42 moves from the second section 412 to the first section 411, and the guide panel 30 moves upward and covers the air inlet 24.

In an embodiment, referring to fig. 4 and 5, the track 41 further includes a third segment 413, the third segment 413 extends from the upper end of the first segment 411 to bend back and up, that is, the third segment 413 extends from the upper end of the first segment 411 to bend up and towards the back plate 22, so that when the sliding member 42 moves up and passes through the first segment 411 to the third segment 413, the front plate 30 can be pulled back, and the front plate 30 can be attached to the front baffle 211 more closely, so that the front plate 30 can be covered on the air inlet 24 better in a sealing manner. When the sliding member 42 moves downward from the third segment 413 to the first segment 411, the panel 30 can be pushed to move forward and then slide downward, so as to facilitate opening the panel 30, prevent the panel 30 from colliding with the upper edge of the front guide 212, and enable the upper edge of the front guide 212 to be better leveled with the panel 30 when the panel 30 covers the air inlet 24, so that the air guide box 20 has better integrity.

In one embodiment, referring to fig. 4 and 5, the back of the panel 30 is provided with a connecting plate 31, and the sliding member 42 is mounted on the connecting plate 31. A connecting plate 31 is provided on the back of the panel 30 to facilitate the secure attachment of the slider 42 to the panel 30. Of course, in some embodiments, the slide 42 may be fixedly attached directly to the panel 30.

In one embodiment, the connecting plate 31 may have an L-shaped cross-section, one side of the connecting plate 31 is fixedly connected to the panel 30, and the other side of the connecting plate 31 is connected to the sliding member 42, so as to better connect the panel 30 to the sliding member 42.

In an embodiment, referring to fig. 4 and fig. 5, the track 41 has a sliding track 41a of the sliding track 410, that is, the sliding track 41a is provided with the sliding track 410, the sliding component 42 is a sliding shaft 42a slidably disposed in the sliding track 410, the sliding track 41a is provided with the sliding track 410, which can better guide the sliding shaft 42a to move, and can conveniently guide the sliding shaft 42a to move in a direction-changing manner, for example, the sliding shaft 42a is guided to slide from the first section 411 to the second section 412, and the sliding shaft 42a is guided to slide from the first section 411 to the third section 413.

In one embodiment, the sliding shaft 42a is sleeved with a roller (not shown), and the roller is disposed in the sliding slot 410 in a matching manner, so as to guide the sliding shaft 42a to move in the sliding slot 410 more flexibly.

In one embodiment, the guide rail assemblies 40 may be provided at both sides of the air guide box 20, respectively, to more smoothly guide the panel 30 up and down. Of course, in some embodiments, the guide rail assembly 40 may be disposed in the middle of the air box 20.

In one embodiment, referring to fig. 4 and 5, the driving mechanism 50 includes a push rod 51, a support 52 and a swing assembly 53, the swing assembly 53 and the support 52 are installed in the air box 20, one end of the push rod 51 is rotatably installed on the support 52, the other end of the push rod 51 is hinged to the panel 30, and the swing assembly 53 is connected to the push rod 51 to drive the push rod 51 to swing, so as to drive the panel 30 to move along the guide assembly 40. The push rod 51 and the support 52 are provided to better cooperate with the guide rail assembly 40 to support the panel 30, so as to ensure the stability of the panel 30.

In one embodiment, the support 52 may be secured to the back plate 22. Of course, in some embodiments, the bracket 52 may be fixed to the side panel 23, and in other embodiments, the bracket 52 may be fixed to the bottom of the fan box 10. That is, the support 52 is fixed in the air guide box 20 so as to support the push rod 51.

In one embodiment, referring to fig. 4 and 5, the swing assembly 53 includes an electric cylinder 531 and an articulated seat 532, one end of the electric cylinder 531 is articulated with the articulated seat 532, the other end of the electric cylinder 531 is articulated with the push rod 51, and the articulated seat 532 is installed in the air guide box 20 to support the electric cylinder 531, so as to drive the push rod 51 to swing around the support 52 by the extension and contraction of the electric cylinder 531, thereby pushing the panel 30 to move. Of course, in some embodiments, the motor may be used to directly drive the swing of the push rod 51. In still other embodiments, the oscillating assembly 53 may be a cam and rocker mechanism.

In one embodiment, the hinge bracket 532 may be secured to the back plate 22. Of course, in some embodiments, the hinge bracket 532 may be secured to the side plate 23. That is, it is only necessary to support and fix the hinge base 532 in the air guide box 20 so as to support the electric cylinder 531 in a hinge manner.

In one embodiment, the push rod 51 is hingedly connected to the connection plate 31 at the back of the panel 30 to facilitate the hinged connection of the push rod 51 to the panel 30.

In one embodiment, the swing assembly 53 further comprises a connecting rod 533, one end of the connecting rod 533 is hinged to the other end of the electric cylinder 531, and the other end of the connecting rod 533 is fixedly connected to the push rod 51. A connecting rod 533 is provided to facilitate the articulated connection of the electric cylinder 531 with the push rod 51 and to push the push rod 51 to swing.

In one embodiment, the link 533 and the push rod 51 are integrally formed, and the link 533 and the push rod 51 are disposed in a V shape to ensure the connection strength between the link 533 and the push rod 51. Of course, in some embodiments, the link 533 may also be disposed at a middle position of the push rod 51, such as forming the link 533 and the push rod 51 as a whole into a T-shaped structure.

In one embodiment, the air guide box 20 is provided at both sides thereof with a stand 52 and a push rod 51, respectively, to more stably support the panel 30 and guide the panel 30 to smoothly move. In some embodiments, the mount 52 and pushrod 51 may be provided on only one side of the air guide box 20. Of course, in still other embodiments, the mount 52 and push rod 51 may be provided in the middle of the air guide box 20.

In one embodiment, a driving mechanism 50 may be provided at each side of the air guide box 20 to more smoothly push the panel 30 to move. In one embodiment, the drive mechanism 50 may also be provided on only one side of the air guide box 20 to reduce cost.

In one embodiment, the electric cylinder 531 may be provided at one side of the air guide box 20, and the rail assembly 40, the push rod 51 and the support 52 may be provided at both sides of the air guide box 20, respectively, i.e., the support panel 30 may be stably supported, the guide panel 30 may be smoothly moved, and costs may be reduced.

In one embodiment, a shield (not shown) is installed in the air guide box 20, and the electric cylinder 531 and the hinge base 532 are provided in the shield to protect the electric cylinder 531 and the hinge base 532 from oil smoke contaminating the electric cylinder 531. In one embodiment, protective hoods may be provided on both sides of the air guide box 20, respectively, and the rail assembly 40 and the driving mechanism 50 may be installed in the respective hoods to protect the rail assembly 40 and the driving mechanism 50.

In one embodiment, referring to fig. 6, the rail 41 may be a sliding rail 41b, and the sliding member 42 may be a sliding block 42b installed on the sliding rail 41b, and the sliding block 42b is guided by the sliding rail 41b to move, so as to guide the panel 30 to move. In some embodiments, a plurality of shafts may be used to position the belt or chain, and the panel 30 is connected to the belt or chain, and the belt or chain is driven to move the panel 30.

In one embodiment, referring to fig. 6, the electric cylinder 531 may be directly hinged to the panel 30 to directly drive the panel 30 to move up and down through the electric cylinder 531, i.e. the driving mechanism 50 may only include the electric cylinder 531 and the hinge base 532.

In one embodiment, referring to fig. 7, the electric cylinder 531 may be hinged to a middle position of the push rod 51, so that the push rod 51 is directly driven to swing by the electric cylinder 531.

In one embodiment, referring to fig. 8, the driving mechanism 50 includes a winder 54, a first strap 55, a plurality of first direction-changing wheels 56, a second strap 57, and a plurality of second direction-changing wheels 58, wherein one end of the first strap 55 is connected to the upper side of the panel 30, the other end of the first strap 55 is connected to the winder 54 by passing around the plurality of first direction-changing wheels 56, one end of the second strap 57 is connected to the lower side of the panel 30, the other end of the second strap 57 is connected to the winder 54 by passing around the plurality of second direction-changing wheels 58, the plurality of first direction-changing wheels 56 guide the first strap 55 to change direction so as to be connected to the winder 54, and the plurality of second direction-changing wheels 58 guide the second strap 57 to change direction so as to be connected to the winder 54, so that the first strap 55 is pulled by the rotation of the winder 54 and the second strap 57 is released to drive the panel 30 to move upward; the winder 54 rotates in the reverse direction, pulling the second strap 57 and releasing the first strap 55 to move the panel 30 downward.

The range hood 100 of the embodiment of the application has a large space in front of the front baffle 211 to facilitate cooking. When the cigarette lighter is started, the panel 30 can be automatically pushed to move downwards, the air inlet 24 is opened, the panel 30 is attached to the front guide plate 212, and the panel 30 is inclined to collect cigarettes. When the range hood is stopped, the panel 30 can be automatically pushed to move upwards to cover the air inlet 24, so that the smoke is prevented from flowing backwards, and the good integrity and the attractive appearance of the range hood 100 are kept.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (13)

1. The range hood comprises an air guide box and a fan box arranged on the air guide box, wherein the fan box is communicated with the top of the air guide box, the air guide box comprises a back plate, a front plate arranged on the front side of the back plate and two side plates supporting the two sides of the front plate, and the two side plates are respectively arranged on the two sides of the back plate; the range hood also comprises a panel covered on the air inlet, a guide rail assembly used for guiding the panel to move to be attached to the front guide plate, and a driving mechanism used for driving the panel to slide along the guide rail assembly to open or close the air inlet; the driving mechanism and the guide rail assembly are arranged in the air guide box, and the panel is connected with the guide rail assembly.

2. The range hood of claim 1, wherein: the guide rail assembly comprises a rail mounted on the side plate or the front plate, and a sliding part arranged on the rail in a sliding manner; the sliding piece is connected with the panel, the rail is installed on the side plate and comprises a first section parallel to the front baffle plate and a second section which is bent and extended downwards from the lower end of the first section and towards the direction of the back plate, and the second section extends to the position corresponding to the front guide plate.

3. The range hood of claim 2, wherein: the track also comprises a third section which extends upwards from the upper end of the first section and bends towards the direction of the back plate.

4. The range hood of claim 2, wherein: the back of the panel is provided with a connecting plate, and the sliding piece is arranged on the connecting plate.

5. The range hood of claim 2, wherein: the track is a slide way with a sliding groove, and the sliding piece is a sliding shaft which is arranged in the sliding groove in a sliding mode.

6. The range hood of any one of claims 1-5, wherein: the guide rail assemblies are respectively arranged on two sides of the air guide box.

7. The range hood of any one of claims 1-5, wherein: the driving mechanism comprises a push rod for pushing the panel to move along the guide rail assembly, a support arranged in the air guide box and a swinging assembly for driving the push rod to swing; one end of the push rod is rotatably arranged on the support, the other end of the push rod is hinged with the panel, and the swinging assembly is arranged in the air guide box.

8. The range hood of claim 7, wherein: the swing assembly comprises an electric cylinder driving the push rod to swing and a hinged seat installed in the air guide box, one end of the electric cylinder is hinged to the hinged seat, and the other end of the electric cylinder is hinged to the push rod.

9. The range hood of claim 8, wherein: the swing assembly further comprises a connecting rod, one end of the connecting rod is hinged to the other end of the electric cylinder, and the other end of the connecting rod is fixedly connected with the push rod.

10. The range hood of claim 9, wherein: the connecting rod with the push rod is integrated into one piece, the connecting rod with the push rod is the V type setting.

11. The range hood of claim 8, wherein: install the protection casing in the air guide case, electronic jar with articulated seat is located in the protection casing.

12. The range hood of claim 7, wherein: the support and the push rod are respectively arranged on two sides of the air guide box.

13. The range hood of any one of claims 1-5, wherein: the included angle range of the front baffle plate and the horizontal direction is 80-100 degrees.

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