CN207751034U - A kind of range hood - Google Patents

Abstract

The utility model discloses a kind of range hood, including exhaust fume collecting hood, the smoke collecting chamber being recessed upwards is formed in the exhaust fume collecting hood, the bottom of the smoke collecting chamber is provided with smoke-collecting plate, it is characterised in that：Spaced apart first air inlet hole and the second air inlet hole on left and right direction are offered on the smoke-collecting plate, the first turnover panel of the first air inlet hole can be opened or closed relative to smoke-collecting plate movement, overturning by being provided with above the smoke-collecting plate, and energy is mobile relative to smoke-collecting plate, overturning is to open or close the second turnover panel of the second air inlet hole.By being arranged relative to the turnover panel that smoke-collecting plate is mobile and overturns, to open or close air inlet hole, two air inlet holes can be made all for respective burner on kitchen range, to make full use of negative pressuren zone to concentrate respectively and be oriented to, promotion smoke absorption effect；And two air inlet holes can be adjusted according to hearth service condition, accomplish precisely straight inhale.

Description

A kind of range hood

Technical field

The utility model is related to machine for kitchen use, especially a kind of range hood.

Background technology

Range hood has become one of machine for kitchen use equipment indispensable in Modern Family.Usual range hood includes top Suction and near-absorption type, the range hood of top suction type utilize the principle that hot gas rises, and suction is generated when cooking to be risen naturally Oil smoke, additionally due to it is clean and tidy light and handy, occupy little space the advantages that, and it is in an increasingly wide range of applications.

At present existing top-sucking kitchen ventilator (be mounted on right over kitchen range, thin type, deep type or tower range hood, Include side inhale and lower-discharging type) mostly structure type be：Top is arranged exhaust fume collecting hood and forms concave cavity (smoke collecting chamber), on exhaust fume collecting hood It is provided with air inlet and filter screen.The oil smoke generated in cooking process is collected in smoke collecting chamber, and by connecting with smoke collecting chamber Logical air duct discharge is outdoor.A kind of kitchen hood as disclosed in the Chinese patent application No. is 200520086100.7, including Exhaust fume collecting hood and design in lower part are set in the air duct on exhaust fume collecting hood top, is provided in the middle part of exhaust fume collecting hood and is connected with air duct bottom end Air inlet ring, be provided with fan in air duct, air inlet ring lower part is provided with oil cleaner screen, and the lower part of oil cleaner screen is provided with lubricating cup.It is this The negative pressuren zone of range hood is concentrated mainly near air inlet, that is to say, that high negative pressure area is concentrated mainly on centre, this air draught It is unfavorable that mode uses the user using eyes stove or multi-hole kitchen range, and oil smoke is easy at left and right sides of smoke machine and front side is excessive.

In order to improve smoke absorption effect, also have been disclosed that some carry the range hood of smoke deflector at present, oil smoke is by leading Wall attachment effect is generated when cigarette plate, enables to oil smoke both sides and front side guiding to the left and right.Such as application No. is 201410315985.7 Chinese patent application disclosed in a kind of top-sucking kitchen ventilator, including exhaust fume collecting hood and air inlet in exhaust fume collecting hood bottom surface is set Mouthful, oil collection plate is fixed on the underface of air inlet, and the channel of four sides air inlet is constituted with air inlet bottom surface, and kuppe is located at oil-collecting The lower surface of plate；For another example 201410419676.4 include exhaust fume collecting hood, smoke deflector and body, and air inlet is offered on the exhaust fume collecting hood Mouthful, the air inlet setting of the deflector face exhaust fume collecting hood, and deflector keeps scheduled spacing with exhaust fume collecting hood and forms oil smoke Channel is provided with blower fan system in body.

These above-mentioned prior arts, blower fan system use be usually multi-wing centrifugal fan, and for single hole into Wind, air intake passage cannot be adjusted according to hearth service condition；And multi-wing centrifugal fan static pressure is low, and negative pressuren zone is small, lacks Negative pressure, which is concentrated, to be oriented to, and fume exhaust effect is undesirable, if cannot be concentrated use in negative pressuren zone, is difficult to solve to run cigarette and be asked Topic；Range hood when not in use, cannot be automatically closed, not can effectively prevent the taint of odour of oil smoke.

Utility model content

Technical problem to be solved in the utility model is in view of the above-mentioned problems of the prior art, providing a kind of raising The range hood of fume-exhausting efficiency.

Technical solution is used by the utility model solves above-mentioned technical problem：A kind of range hood, including exhaust fume collecting hood, The smoke collecting chamber being recessed upwards is formed in the exhaust fume collecting hood, the bottom of the smoke collecting chamber is provided with smoke-collecting plate, it is characterised in that：Institute It states and offers spaced apart first air inlet hole and the second air inlet hole on left and right direction on smoke-collecting plate, above the smoke-collecting plate The first turnover panel of the first air inlet hole can be opened or closed relative to smoke-collecting plate movement, overturning by being provided with, and can opposite collection cigarette Plate is mobile, overturns to open or close the second turnover panel of the second air inlet hole.

Preferably, it is moved automatically for two turnover panels of driving, and independent control, is additionally provided with and is used for above the smoke-collecting plate Drive the first driving mechanism that the first turnover panel moves, for guide the first guiding mechanism that the first turnover panel moves, for driving the Second driving mechanism of two turnover panels movement and the second guiding mechanism for guiding the movement of the second turnover panel.

Preferably, it is that the first turnover panel of driving is mobile and overturning, first driving mechanism has the first output end, and described the First connecting rod, one end of the first connecting rod and the first of the first driving mechanism are connected between one driving mechanism and the first turnover panel Output end rotation connection, the other end are then connected to the first turnover panel, and first driving mechanism drives first connecting rod in left and right direction Upper movement.

To limit the mobile route of the first turnover panel, first guiding mechanism includes the first guide rail and the second guide rail, described There are two first guide rail tools, is arranged in the front and rear sides of smoke-collecting plate；There are two the second guide rail tools, is arranged in Second guide rail of the front and rear sides of smoke-collecting plate, each first guide rail and corresponding side arranged for interval on left and right direction, it is described First turnover panel is slidably matched with the first guide rail, the second guide rail respectively.

Preferably, for ease of the first turnover panel when by the power of first connecting rod, the movement that movement can be generated and overturn, two The opposite side of first guide rail offers the first sliding groove upwardly extended in left and right side respectively, and forward and backward the two of first turnover panel Side is respectively arranged with the first sliding block being slidably matched with the first sliding groove close to the position of left end, and each the first sliding groove is on a left side It closes side end；The opposite side of two the second guide rails offers the second sliding slot upwardly extended in left and right side, Mei Ge respectively The thickness of two sliding slots is adapted to the thickness of the first turnover panel, so that the first turnover panel is inserted into second sliding slot.

To guide the overturning of the first turnover panel, first guiding mechanism further includes the first guide post, is opened on first turnover panel Equipped with the first pilot hole, the top of first guide post is connected and fixed with exhaust fume collecting hood, and the bottom of first guide post is passed down through The size of first pilot hole, first pilot hole is more than the size that the first guide post passes through part, so that the first turnover panel Opposite first guide post has certain activity space.

Preferably, it is that the second turnover panel of driving is mobile and overturning, second driving mechanism has a second output terminal, and described the Second connecting rod, one end of the second connecting rod and the second of the second driving mechanism are connected between two driving mechanisms and the second turnover panel Output end rotation connection, the other end are then connected to the second turnover panel, and second driving mechanism drives second connecting rod in left and right direction Upper movement.

To limit the mobile route of the second turnover panel, second guiding mechanism includes third guide rail and the 4th guide rail, described There are two third guide rail tools, is arranged in the front and rear sides of smoke-collecting plate；There are two the 4th guide rail tools, is arranged in The third guide rail of the front and rear sides of smoke-collecting plate, each the 4th guide rail and corresponding side arranged for interval on left and right direction, it is described Second turnover panel is slidably matched with third guide rail, the 4th guide rail.

Preferably, for ease of the second turnover panel when by the power of second connecting rod, the movement that movement can be generated and overturn, two The opposite side of third guide rail offers the third sliding slot upwardly extended in left and right side respectively, and forward and backward the two of second turnover panel Side is respectively arranged with the second sliding block being slidably matched with third sliding slot close to the position of right-hand end, and each third sliding slot is on the right side It closes side end；Two opposite sides of the 4th guide rail offer the 4th sliding slot upwardly extended in left and right side, Mei Ge respectively The thickness of four sliding slots is adapted to the thickness of the second turnover panel, so that the second turnover panel is inserted into the 4th sliding slot.

To guide the overturning of the second turnover panel, second guiding mechanism further includes the second guide post, is opened on second turnover panel Equipped with the second pilot hole, the top of second guide post is connected and fixed with exhaust fume collecting hood, and the bottom of second guide post is passed down through The size of second pilot hole, second pilot hole is more than the size that the second guide post passes through part, so that the second turnover panel phase There is certain activity space to the second guide post.

To improve fan efficiency and wind pressure, fume-exhausting efficiency is promoted so that negative pressuren zone is more concentrated, and smoke evacuation is more smoothly, It is provided with cabinet above the exhaust fume collecting hood, blower fan system is provided in the cabinet, the blower fan system uses ternary wind turbine, institute The air inlet of blower fan system is stated before and in being obliquely placed in cabinet with horizontal direction.

Compared with prior art, the utility model has the advantage of：By being arranged, opposite smoke-collecting plate is mobile and what is overturn turns over Plate can make two air inlet holes all be directed to respective burner on kitchen range respectively, make full use of to open or close air inlet hole Negative pressuren zone, which is concentrated, to be oriented to, and smoke absorption effect is promoted；And two air inlet holes can be adjusted according to hearth service condition, be accomplished It is precisely straight to inhale；The strainer and blower fan system compared with greasy dirt can be hidden when closing, effectively prevent the taint of odour of oil smoke, while keeping range hood aobvious Neat and tidy is obtained, it is easy to clean, it improves significantly to air in kitchen environment；And movement, the overturning mode of turnover panel, contracting Small installation space；By using ternary wind turbine, blower fan structure is compact, and size is relatively small, and fan efficiency and wind pressure are high, generate Suction gradient it is big, can so that smoking efficiency significantly promoted；And ternary wind turbine is tilting in cabinet, realize straight inhale directly Row, negative pressuren zone are concentrated, and help to reduce the resistance of ducting, smoke evacuation is more smooth, and makes noise source farther away from user.

Description of the drawings

Fig. 1 is the air inlet hole opening state schematic diagram of the range hood of the utility model embodiment；

Fig. 2 is the sectional view of the range hood of Fig. 1；

Fig. 3 is the partial schematic diagram of the range hood of Fig. 1；

Fig. 4 is the decomposition texture schematic diagram of Fig. 3；

Fig. 5 is the single closed mode schematic diagram of air inlet hole of the range hood of the utility model embodiment；

Fig. 6 is the partial schematic diagram of the range hood of Fig. 5；

Fig. 7 is the air inlet hole Close All status diagram of the range hood of the utility model embodiment；

Fig. 8 is the partial schematic diagram of the range hood of Fig. 7.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing embodiment.

Referring to Fig. 1~Fig. 4, a kind of range hood, including exhaust fume collecting hood 1, the cabinet 2 above exhaust fume collecting hood 1 and setting Blower fan system 4 in cabinet 2.Hereinafter, for ease of description, "front", "rear", "left", "right", "upper", "lower" refer to oil suction With respect to the orientation of user when smoke machine uses, but the restriction to technical solution is not constituted.

Exhaust fume collecting hood 1 includes inner can 11 and outer casing 12, and inner can 11 includes multiple side plates 111 and is arranged in side plate 111 The top plate 112 at top, side plate 111 and top plate 112 collectively form the smoke collecting chamber 13 being recessed upwards, and the shape of smoke collecting chamber 13 is unlimited, If top plate 12 can be in that horizontal or relative level tilts, so that smoke collecting chamber 13 is T-shaped or turriform etc..Each top plate 112 is mutual It is constituted between close inner end and enters the air inlet 14 in cabinet 2 from smoke collecting chamber 13 for oil smoke, it is interior at the top of outer casing 12 End, inner can 11 the inner end of top plate 112 be connected to the bottom end of cabinet 2.

Air duct 25 is formed in cabinet 2, the entrance in air duct 25 is arranged in strainer 26.In the present embodiment, strainer 26 is adopted With grid-like flat strainer, alternatively, the reversion strainer etc. that strainer 26 may be rotary sieve, be recessed upwards.

1 bottom of exhaust fume collecting hood is provided with smoke-collecting plate 3, and each side plate 111 in the inner can 11 of exhaust fume collecting hood 1 is arranged in smoke-collecting plate 3 Between bottom, it is located at the bottom of smoke collecting chamber 13.Exhaust fume collecting hood 1 and smoke-collecting plate 3 can be integrally formed.

The first air inlet hole 31 and the second air inlet hole 32 are offered on smoke-collecting plate 3, two air inlet holes are spaced on left and right direction Arrangement, to which one of each air inlet hole and kitchen range kitchen range is corresponding.The suction common relative to tradition of this double air intake passages Kitchen ventilator, runner Relatively centralized, rationally, reduce path of the smoke machine noise source to external radiation, therefore noise is lower, usage experience More preferably.Oil smoke can be entered by each air inlet hole in smoke collecting chamber 13, and pass through the air inlet 14 among top plate 112 from smoke collecting chamber 13 It enters in cabinet 2, and the blower fan system 4 by being arranged in cabinet 2 is discharged into outside cabinet 2.

Spacing between two air inlet hole centers can carry out selection design according to kitchen range centre-to-centre spacing size.And it each enters the wind The shape in hole can there are many selections, such as round, oval, rectangular or other any irregular abnormity.

It can be by can be turned over by setting second at the first turnover panel 81 of setting, the second air inlet hole 31 at first air inlet hole 31 Plate 82, to open and close the first air inlet hole 31, the second air inlet hole 32.In the present embodiment, the first turnover panel 81 and second Turnover panel 82 can with independent control, and can, overturning mobile relative to corresponding air inlet hole, to come independently open and close accordingly into Air holes.Position inside smoke collecting chamber 13, above smoke-collecting plate 3 is provided with first for driving the first turnover panel 81 to move and drives Motivation structure 83, the first guiding mechanism 84 of guiding the first turnover panel 81 movement, the second driving for driving the second turnover panel 82 to move Mechanism 85 and the second guiding mechanism 86 of guiding the second turnover panel 82 movement.Preferably, the first driving mechanism 83 and second drives The structure of mechanism 85 is identical.For ease of fixation, above-mentioned each driving mechanism and transmission mechanism are arranged on the upper surface of smoke-collecting plate 3.

The rear side in the first air inlet hole 31 is arranged in first driving mechanism 83, and the second driving mechanism 85 is arranged in the second air inlet hole 32 front side.Or, or, the first driving mechanism 83 is arranged in the front side of the first air inlet hole 31, the second driving mechanism 85 Rear side in the second air inlet hole 32 is set.Wherein, the first driving mechanism 83 and the second driving mechanism 85 are preferably pushed away using electronic Bar, or can also use other that can drive the mechanism of high voltage breaker.First driving mechanism 83 and the second driving mechanism 85 It is respectively provided with the first output end 831 and second output terminal 851.It is connected with first between first driving mechanism 83 and the first turnover panel 81 Connecting rod 832 is connected with second connecting rod 852 between second driving mechanism 85 and the second turnover panel 82.Wherein, the one of first connecting rod 832 End is then connected to the front side of the first turnover panel 81 with the first output end 831 rotation connection of the first driving mechanism 83, the other end, preferably , in the front side of the first turnover panel 81 close to the position of right end.Wherein, one end of second connecting rod 852 and the second driving mechanism 85 The rotation connection of first output end 851, the other end are then connected to the front side of the second turnover panel 82, it is preferred that before the second turnover panel 82 Side is close to the position of left end.

First guiding mechanism 84 includes the first guide post 842, the first guide rail 843 and the second guide rail 844.It is set on first turnover panel 81 It is equipped with the first support base 845, first connecting rod 832 is whole L-shaped, is positioned against and first by what is connect with the first output end 831 The position bending that turnover panel 81 connects, the end of bending is connected and fixed with the first support base 845.The top of first guide post 842 and collection The top plate 112 of petticoat pipe 1 is connected and fixed, and the first turnover panel 81 side opposite with the first support base 845 offers the first pilot hole 846, the bottom of the first guide post 842 is passed down through the first pilot hole 846, and the first pilot hole 846 is more than the first guide post 842 and passes through portion The size divided, so that 81 opposite first guide post 842 of the first turnover panel has certain activity space.

There are two first guide rail 843 tools, the front and rear sides being arranged on smoke-collecting plate 3, and is located at the first air inlet hole 31 left sides, two opposite sides of the first guide rail 843 offer the first sliding groove 8431 upwardly extended in left and right side respectively.The The front and rear sides of one turnover panel 81 is respectively arranged with the first sliding block 847, on each first sliding block 847 close to the position of left end It is provided with the first guiding axis 8471 extended far from the first turnover panel 81, first on the first guiding axis 8471 and the first guide rail 843 Sliding slot 8431 is slidably matched.The first sliding groove 8431 is closed in left end, to limit the extreme position of the first turnover panel 81 movement.

There are two second guide rail 844 tools, the front and rear sides being arranged on smoke-collecting plate 3, and close to the first air inlet hole Second guide rail 844 of 31 right-hand ends, each first guide rail 843 and corresponding side arranged for interval on left and right direction.Two The opposite side of two guide rails 844 offers the second sliding slot 8441 upwardly extended in left and right side, the thickness of second sliding slot 8441 respectively Degree is adapted to the thickness of the first turnover panel 81, so that the edge of the first turnover panel 81 can be plugged into second sliding slot 8441.

Second guiding mechanism 86 includes the second guide post 862, third guide rail 863 and the 4th guide rail 864.It is set on second turnover panel 82 It is equipped with the second support base 865, second connecting rod 852 is whole L-shaped, is positioned against and second by what is connect with second output terminal 851 The position bending that turnover panel 82 connects, the end of bending is connected and fixed with the second support base 865.The top of second guide post 862 and collection The top plate 112 of petticoat pipe 1 is connected and fixed, and the second turnover panel 82 side opposite with the second support base 865 offers the second pilot hole 866, the bottom of the second guide post 862 is passed down through the second pilot hole 866, and the second pilot hole 866 is more than the second guide post 862 and passes through portion The size divided, so that 82 opposite second guide post 862 of the second turnover panel is between certain activity space.

There are two the tools of third guide rail 863, the front and rear sides being arranged on smoke-collecting plate 3, and is located at the second air inlet hole 32 right sides, the opposite side of two third guide rails 863 offers the third sliding slot 8631 upwardly extended in left and right side respectively.The The front and rear sides of two turnover panels 82 is respectively arranged with the second sliding block 867, on each second sliding block 867 close to the position of right-hand end It is provided with the second guiding axis 8671 extended far from the second turnover panel 82, the second guiding axis 8671 and the third on third guide rail 863 Sliding slot 8631 is slidably matched.Third sliding slot 8631 is closed in right-hand end, to limit the extreme position of the second turnover panel 82 movement.

There are two 4th guide rail 864 tools, the front and rear sides being arranged on smoke-collecting plate 3, and close to the second air inlet hole The third guide rail 863 of 32 left ends, each the 4th guide rail 864 and corresponding side arranged for interval on left and right direction.Two The opposite side of four guide rails 864 offers the 4th sliding slot 8641 upwardly extended in left and right side, the thickness of the 4th sliding slot 8641 respectively Degree is adapted to the thickness of the second turnover panel 82, so that the edge of the second turnover panel 82 can be plugged into the 4th sliding slot 8641.

Blower fan system 4 in cabinet 2 uses ternary wind turbine, and the prior art can be used, as the applicant application No. is The air outlet of blower fan structure disclosed in 201620102790.9 patent, blower fan system 4 is provided with outlet housing 5, and being used for will The oil smoke discharge that blower fan system 4 is discharged is to wind pipe.The air inlet 41 of blower fan system 4 is in and horizontal direction before It is obliquely placed in cabinet 2.The mode tilting in this way of blower fan system 4, negative pressuren zone are concentrated, and help to reduce the resistance of ducting, smoke evacuation It is more smooth.

When range hood works, the first driving mechanism 83 and the second driving mechanism 85 start operating, the first driving mechanism 83 by be covered at the first air inlet hole 31 the first turnover panel 81 promotion move to the left, until the first turnover panel 81 left end with The left end of the first sliding groove 8431 abuts；Hereafter, the first driving mechanism 83 remains in operation, since the first turnover panel 81 can not be followed by Continuous movement, therefore, first connecting rod 832 is flipped up around the junction of the first output end 831 with the first driving mechanism 83, is driven First turnover panel 81 is flipped up, since the first turnover panel 81 has been moved to the left certain distance at this time, when the first turnover panel 81 is upward It after overturning, can be staggered with the position part of the first air inlet hole 31, to increase the opening area of the first air inlet hole 31, the first guide post 842 define the path of the first turnover panel 81 overturning；Second driving mechanism 85 will be covered in the second turnover panel at the second air inlet hole 32 82 promotions are moved to the right, until the right-hand end of the second turnover panel 82 is abutted with the right-hand end of third sliding slot 8631；Hereafter, Two driving mechanisms 85 remain in operation, since the second turnover panel 82 can not be further continued for moving, second connecting rod 852 drives around with second The junction of the second output terminal 851 of motivation structure 85 is flipped up, and drives the second turnover panel 82 to be flipped up, since second turns at this time Plate 82 has moved right certain distance therefore, can be with the position part of the second air inlet hole 32 after the second turnover panel 82 is flipped up It is staggered, to increase the opening area of the second air inlet hole 32, the second guide post 862 defines the path of the second turnover panel 82 overturning, referring to Fig. 1 and Fig. 3.Or can also be according to culinary art the case where, only drive one of turnover panel to act, referring to Fig. 5 and Fig. 6.

When range hood is closed, the first driving mechanism 83 and the second driving mechanism 85 start operating, the first driving mechanism 83 driving first connecting rods 832 act to the right, and the first turnover panel 81 is driven to downwardly turn over, until substantially neat with the upper surface of smoke-collecting plate 3 It is flat；Hereafter, the first driving mechanism 83 remains in operation, since the first turnover panel 81 can not be further continued for overturning, first connecting rod 832 The first turnover panel 81 is pulled to move right, until the front end of the first turnover panel 81 is inserted into second sliding slot 8441 and the first turnover panel 81 are completely covered the first air inlet hole 31；Second driving mechanism 85 driving second connecting rod 852 act to the left, drive the second turnover panel 82 to Lower overturning, until the upper surface with smoke-collecting plate 3 is substantially flush；Hereafter, the second driving mechanism 85 remains in operation, due to the second turnover panel 82 can not be further continued for overturning, and therefore, second connecting rod 852 pulls the second turnover panel 82 to be moved to the left, until the front end of the second turnover panel 82 It is inserted into the 4th sliding slot 8641 and the second air inlet hole 32 is completely covered in the second turnover panel 82；Two turnover panel closings are entire at this time Smoke-collecting plate 3, is integrally formed, referring to Fig. 7 and Fig. 8.Thus the strainer and blower fan system compared with greasy dirt can be hidden, oil smoke is effectively prevent Taint of odour, while range hood being made to seem neat and tidy, it is easy to clean, it improves significantly to air in kitchen environment.

Claims (11)

1. a kind of range hood, including exhaust fume collecting hood (1), the exhaust fume collecting hood (1) is interior to be formed with the smoke collecting chamber (13) being recessed upwards, institute The bottom for stating smoke collecting chamber (13) is provided with smoke-collecting plate (3), it is characterised in that：It is offered in left and right direction on the smoke-collecting plate (3) Upper spaced apart first air inlet hole (31) and the second air inlet hole (32), smoke-collecting plate (3) top is provided with can opposite collection cigarette Plate (3) moves left and right and overturns to open or close the first turnover panel (81) of the first air inlet hole (31), and can opposite collection cigarette Plate (3) moves left and right and overturns to open or close the second turnover panel (82) of the second air inlet hole (32).

2. range hood according to claim 1, it is characterised in that：It is additionally provided with above the smoke-collecting plate (3) for driving The first driving mechanism (83) of dynamic first turnover panel (81) movement, the first guiding mechanism for guiding the first turnover panel (81) to move (84), it is used to drive the second driving mechanism (85) of the second turnover panel (82) movement and for guiding the second turnover panel (82) to move The second guiding mechanism (86).

3. range hood according to claim 2, it is characterised in that：First driving mechanism (83) has the first output It holds (831), first connecting rod (832) is connected between first driving mechanism (83) and the first turnover panel (81), described first connects One end of bar (832) is then connected to first and turns over the first output end (831) rotation connection of the first driving mechanism (83), the other end Plate (81), the first driving mechanism (83) driving first connecting rod (832) are moved on left and right direction.

4. range hood according to claim 3, it is characterised in that：First guiding mechanism (84) includes the first guide rail (843) and the second guide rail (844), first guide rail (843) are arranged in forward and backward the two of smoke-collecting plate (3) there are two having Side；There are two second guide rail (844) tools, is arranged in the front and rear sides of smoke-collecting plate (3), each first guide rail (843) with the second guide rail of corresponding side (844) arranged for interval on left and right direction, first turnover panel (81) is respectively with first Guide rail (843), the second guide rail (844) are slidably matched.

5. range hood according to claim 4, it is characterised in that：The opposite side difference of two the first guide rails (843) Offer the first sliding groove (8431) upwardly extended in left and right side, the front and rear sides of first turnover panel (81), close left side The position of end is respectively arranged with the first sliding block (847) being slidably matched with the first sliding groove (8431), each the first sliding groove (8431) it is closed in left end；Two opposite sides of the second guide rail (844) offer respectively to be upwardly extended in left and right side The thickness of second sliding slot (8441), each second sliding slot (8441) is adapted to the thickness of the first turnover panel (81), so as to the first turnover panel (81) it is inserted into second sliding slot (8441).

6. range hood according to claim 4, it is characterised in that：First guiding mechanism (84) further includes first leading Column (842) offers the first pilot hole (846), top and the collection cigarette of first guide post (842) on first turnover panel (81) Cover (1) is connected and fixed, and the bottom of first guide post (842) is passed down through the first pilot hole (846), first pilot hole (846) size is more than the size that the first guide post (842) passes through part, so that the first turnover panel (81) is with respect to the first guide post (842) there is certain activity space.

7. range hood according to claim 2, it is characterised in that：Second driving mechanism (85) has the second output It holds (851), second connecting rod (852) is connected between second driving mechanism (85) and the second turnover panel (82), described second connects One end of bar (852) is then connected to second and turns over second output terminal (851) rotation connection of the second driving mechanism (85), the other end Plate (82), the second driving mechanism (85) driving second connecting rod (852) are moved on left and right direction.

8. range hood according to claim 7, it is characterised in that：Second guiding mechanism (86) includes third guide rail (863) and the 4th guide rail (864), the third guide rail (863) are arranged in forward and backward the two of smoke-collecting plate (3) there are two having Side；There are two 4th guide rail (864) tools, is arranged in the front and rear sides of smoke-collecting plate (3), each the 4th guide rail (864) with the third guide rail of corresponding side (863) arranged for interval on left and right direction, second turnover panel (82) and third guide rail (863), the 4th guide rail (864) is slidably matched.

9. range hood according to claim 8, it is characterised in that：The opposite side difference of two third guide rails (863) Offer the third sliding slot (8631) upwardly extended in left and right side, the front and rear sides of second turnover panel (82), close to right side The position of end is respectively arranged with the second sliding block (867) being slidably matched with third sliding slot (8631), each third sliding slot (8631) it is closed in right-hand end；Two opposite sides of the 4th guide rail (864) offer respectively to be upwardly extended in left and right side The thickness of 4th sliding slot (8641), each 4th sliding slot (8641) is adapted to the thickness of the second turnover panel (82), so as to the second turnover panel (82) it is inserted into the 4th sliding slot (8641).

10. range hood according to claim 8 or claim 9, it is characterised in that：Second guiding mechanism (86) further includes Two guide posts (862), offer the second pilot hole (866) on second turnover panel (82), the top of second guide post (862) with Exhaust fume collecting hood (1) is connected and fixed, and the bottom of second guide post (862) is passed down through the second pilot hole (866), and described second is oriented to The size in hole (866) is more than the size that the second guide post (862) passes through part, so that the second turnover panel (82) is with respect to the second guide post (862) there is certain activity space.

11. range hood according to claim 1, it is characterised in that：It is provided with cabinet (2) above the exhaust fume collecting hood (1), Blower fan system (4) is provided in the cabinet (2), the blower fan system (4) uses ternary wind turbine, the blower fan system (4) Air inlet (41) is before and interior in cabinet (2) is obliquely placed in horizontal direction.