CN207422306U - A kind of range hood - Google Patents

Abstract

The utility model discloses a kind of range hoods, including exhaust fume collecting hood and the cabinet being arranged on above exhaust fume collecting hood, upward concave smoke collecting chamber is formed in the exhaust fume collecting hood, the bottom of the smoke collecting chamber is provided with smoke-collecting plate, blower fan system is provided in the cabinet, it is characterised in that：The blower fan system includes the first ternary wind turbine and the second ternary wind turbine that are arranged in parallel, 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 that can movably open or close the first air inlet hole and the second turnover panel that can movably open or close the second air inlet hole are provided with above the smoke-collecting plate.By setting mobile turnover panel, so as to open or close air inlet hole, two air inlet holes can be caused respectively all for respective burner on kitchen range, negative pressuren zone to be made full use of to concentrate and is oriented to, promotes 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, it is and in an increasingly wide range of applications.

At present existing top-sucking kitchen ventilator (be mounted on directly over kitchen range, thin type, deep type or tower range hood, Include side inhale and lower-discharging type) mostly structure type be：Top sets exhaust fume collecting hood to form 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 passage discharge is outdoor.A kind of kitchen hood as disclosed in the Chinese patent of Application No. 200520086100.7, including It is arranged on the exhaust fume collecting hood of lower part and designs in the air passage on exhaust fume collecting hood top, be provided in the middle part of exhaust fume collecting hood and be connected with air passage bottom Air inlet ring, be provided with fan in air passage, 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 easily excessive with front side at left and right sides of smoke machine.

In order to improve smoke absorption effect, some range hoods for carrying smoke deflector also have been disclosed at present, oil smoke is by leading Wall attachment effect is generated during cigarette plate, enables to oil smoke both sides and front side guiding to the left and right.Such as Application No. 201410315985.7 Chinese patent application disclosed in a kind of top-sucking kitchen ventilator, including exhaust fume collecting hood and be arranged on the air inlet of exhaust fume collecting hood bottom surface Mouthful, oil collection plate is fixed on the underface of air inlet, and the passage of four sides air inlet is formed 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 of the deflector face exhaust fume collecting hood is set, and deflector and exhaust fume collecting hood keep predetermined spacing and form oil smoke Passage 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；In range hood when not in use, it is impossible to be automatically closed, it is impossible to 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 With the cabinet being arranged on above exhaust fume collecting hood, upward concave smoke collecting chamber, the bottom of the smoke collecting chamber are formed in the exhaust fume collecting hood Smoke-collecting plate is provided with, blower fan system is provided in the cabinet, it is characterised in that：The blower fan system includes be arranged in parallel the One ternary wind turbine and the second ternary wind turbine offer spaced apart first air inlet hole on left and right direction on the smoke-collecting plate With the second air inlet hole, be provided with above the smoke-collecting plate the first turnover panel that can movably open or close the first air inlet hole and The second turnover panel of the second air inlet hole can movably be opened or closed.

Preferably, it is to reduce turnover panel the space occupied, and avoids interfering with each other when moving, first turnover panel and the Two turnover panels are opposite on left and right direction or opposite liftoff movement, first turnover panel and the second turnover panel are towards on smoke-collecting plate It is gone to upper and lower staggeredly when mobile among side.

Preferably, the movement of turnover panel is guided by sliding slot, is provided with to guide the first turnover panel above the smoke-collecting plate With the guiding mechanism of the second turnover panel movement, what the front and rear sides that the guiding mechanism is included in smoke-collecting plate was set respectively first leads Rail and the second guide rail, first guide rail and the second guide rail extend to right side on the left of smoke-collecting plate respectively；First guide rail With the first sliding groove upwardly extended in left and right side is offered on the second guide rail and the second sliding slot, two the first sliding grooves are mutually opposite Should and centre be extended on the left of smoke-collecting plate respectively, two the second sliding slots are in correspondence with each other and respectively from the right side of smoke-collecting plate Side extends to centre, and the front and rear ends of first turnover panel is slidably matched respectively with the first sliding groove, before second turnover panel, Both ends are slidably matched respectively with the second sliding slot afterwards, two sliding slots it is least partially overlapped in the centre of smoke-collecting plate and be overlapped portion Divide and go to upper and lower interlaced arrangement.

To realize automatically moving for the first turnover panel, first guide rail is located at the rear side of smoke-collecting plate, the second guide rail position Rear side above the front side of smoke-collecting plate, the smoke-collecting plate is additionally provided with to drive the first driving machine of the first turnover panel movement Structure；The front and rear ends of first turnover panel is respectively arranged with the first pulley being slidably matched with the first sliding groove, first driving Mechanism is arranged on the rear side of the first guide rail, and thus first driving mechanism and the first turnover panel are separately positioned on the two of the first guide rail Side, one of first pulley that the rear end of first turnover panel is set and the output terminal of the first driving mechanism pass through corresponding the One sliding slot and connect.

Preferably, for two turnover panels is avoided to interfere when being moved to centre, each the first sliding groove includes being located at a smoke-collecting plate left side First extension of side, the second extension among smoke-collecting plate, second extension is from the right part of the first extension Extend to the right and formed after tilting upward bending, thus the height of the second extension is higher than the first extension and the height of the second sliding slot Degree.

Preferably, for ease of the lifting when being moved to centre of the first turnover panel, the rear end of first turnover panel is set wherein One first pulley is rotatablely connected by connecting rod and the output terminal of the first driving mechanism.

To realize automatically moving for the second turnover panel, first guide rail is located at the rear side of smoke-collecting plate, the second guide rail position Front side above the front side of smoke-collecting plate, the smoke-collecting plate is additionally provided with to drive the second driving machine of the second turnover panel movement Structure；The front and rear ends of second turnover panel is respectively arranged with the second pulley being slidably matched with the second sliding slot, second driving Mechanism is arranged on the front side of the second guide rail, and thus second driving mechanism and the second turnover panel are separately positioned on the two of the second guide rail Side, one of second pulley that the front end of second turnover panel is set and the output terminal of the second driving mechanism pass through corresponding the Two sliding slots and connect.

On the basis of Cabinet Size is not changed, to increase air quantity, the first ternary wind turbine includes the first 3 d impeller With the first air inlet, the second ternary wind turbine includes the second 3 d impeller and the second air inlet, on oil smoke flow path, institute It states the second air inlet with the first air inlet position to be equal, first air inlet and the second air inlet are set up in parallel and distinguish Towards the arranged on left and right sides of cabinet.

Preferably, to reduce windage on the premise of Cabinet Size is not increased, smoke absorption effect, first ternary are improved First 3 d impeller of wind turbine, the second 3 d impeller of the second ternary wind turbine respectively from the horizontal by 60 °~90 °, and And two 3 d impellers tilt in the opposite direction.

One side according to the present utility model, the first ternary wind turbine further include the first spiral case, first ternary Impeller is arranged in the first spiral case, and the second ternary wind turbine further includes the second spiral case, and second 3 d impeller is arranged on In two spiral cases, first spiral case and the second spiral case interval are arranged side by side, and first air inlet is formed in the first spiral case On, second air inlet is formed on the second spiral case, and the first oil smoke passage, first oil are formed in first spiral case The top of cigarette channel forms the first air outlet, and the second oil smoke passage, the second oil smoke passage are formed in second spiral case Top formed the second air outlet.

Between other side according to the present utility model, the first 3 d impeller and the second 3 d impeller are in same spiral case Every, be arranged side by side, the first air inlet corresponding with the first 3 d impeller, with the second 3 d impeller it is corresponding second air inlet Mouth is respectively formed at the opposite both sides of spiral case, is provided with installing plate between first 3 d impeller and the second 3 d impeller, institute The top that installing plate extends to spiral case is stated, is led to so as to which two independent the first oil smoke passages and the second oil smoke will be separated into spiral case Road, the top of the first oil smoke passage form the first air outlet, and the top of the second oil smoke passage forms the second air outlet.

For ease of driving two impellers simultaneously, the drive being arranged between the first 3 d impeller and the second 3 d impeller is further included Dynamic motor, the driving motor have the double output shaft for being respectively used to the first 3 d impeller of driving and the second 3 d impeller.

Gas accordingly to be exported to two ternary wind turbines plays guide functions, is conducive to exit gas and forms laminar flow, from And flow losses are greatly lowered, efficiency is improved, outlet housing, the outlet housing bag are provided at the air outlet of the blower fan system The cover body in hollow tube-shape is included, the cover body has the first end and second end of opposite opening, and the bore of the first end is big In being provided with the first deflector and the second deflector in the bore of second end, the cover body, each deflector is from the first of cover body It holds to second end and extends, the first diffusion runner, second water conservancy diversion are formed between first deflector and the madial wall of cover body The section integration of the second diffusion runner, the first diffusion runner and the second diffusion runner is formed between plate and the madial wall of cover body Be not gradually reduced by first end to the second end of cover body, the first diffusion runner at the first end of cover body with the first ternary wind First air outlet of machine corresponds to, the second diffusion runner at the first end of cover body with the second air outlet of the second ternary wind turbine It is corresponding.

Compared with prior art, the utility model has the advantage of：By setting mobile turnover panel, so as to open or close Air inlet hole can cause two air inlet holes respectively all for respective burner on kitchen range, negative pressuren zone to be made full use of to concentrate and is oriented to, is carried Rise smoke absorption effect；And two air inlet holes can be adjusted according to hearth service condition, accomplish precisely straight inhale；It can during closing The strainer and blower fan system compared with greasy dirt are hidden, effectively prevents the taint of odour of oil smoke, while range hood is made to seem neat and tidy, it is convenient clear It washes, improves significantly to air in kitchen environment；And the move mode of turnover panel, reduce installation space；By using Two ternary wind turbines, blower fan structure is compact, and size is relatively small, and fan efficiency and wind pressure are high, and the suction gradient of generation is big, can make The efficiency that must smoke significantly is promoted；The form of this parallel connection two fans vertical display can cause the most strong negative pressure of blower fan system The air-flow entered at left and right sides of area's face, and double air intake passages on smoke-collecting plate can cause the air-flow that lower section enters from left and right two Negative pressure most strong region in side enters blower fan system, reduces the escapement ratio of oil smoke.

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 air inlet hole closed mode schematic diagram 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 blower fan system of range hood of the utility model and the sectional view of outlet housing one embodiment；

Fig. 8 is the schematic diagram of the outlet housing of the range hood of Fig. 1；

Fig. 9 is the schematic diagram of second embodiment of blower fan system and outlet housing of the range hood of the utility model；

Figure 10 is the blower fan system of range hood of Fig. 9 and the sectional view of outlet housing.

Specific embodiment

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

Embodiment one

Referring to Fig. 1~Fig. 6, a kind of range hood, cabinet 2 and setting including exhaust fume collecting hood 1, above exhaust fume collecting hood 1 Blower fan system 4 in cabinet 2.Hereinafter, for ease of description, "front", "rear", "left", "right", " on ", " under " refer to oil suction With respect to the orientation of user when smoke machine uses, but the restriction to technical solution is not formed.

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 on side plate 111 The top plate 112 at top, side plate 111 and top plate 112 collectively form upward concave smoke collecting chamber 13, 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 Formed between close inner end and enter air inlet 14 in cabinet 2 from smoke collecting chamber 13 for oil smoke, 12 top of outer casing it is interior End, the inner end of top plate 112 of inner can 11 are connected to the bottom of cabinet 2.

Air passage 25 is formed in cabinet 2, strainer 26 is arranged on the entrance in air passage 25.In the present embodiment, strainer 26 is adopted With grid-like flat strainer, alternatively, strainer 26 or rotary sieve, upward concave reversion strainer etc..

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

Blower fan system 4 in cabinet 2 uses ternary wind turbine, the prior art can be used, such as the Application No. of the applicant Blower fan structure disclosed in 201620102790.9 patent, the air outlet of blower fan system 4 are provided with outlet housing 5, for inciting somebody to action The oil smoke discharge that blower fan system 4 is discharged is to wind pipe.The concrete structure of blower fan system 4 will be explained below.

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, so as to which each air inlet hole is corresponding with one of kitchen range of kitchen range.This double air intake passages are compared with the common suction of tradition 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 passes through the blower fan system 4 set in cabinet 2 and be discharged into outside cabinet 2.

Spacing between two air inlet hole centers can make choice 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 circular, oval, square or other any irregular abnormity.

It can be by can be turned at the first turnover panel 81 of setting, the second air inlet hole 31 by setting second at first air inlet hole 31 Plate 82, so as 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 the opposite center of smoke-collecting plate 3 movement, so as to independently open and close corresponding air inlet Hole.Position inside smoke collecting chamber 13, above smoke-collecting plate 3 is provided with to drive the first driving of the first turnover panel 81 movement Mechanism 83, the second driving mechanism 85 and guiding mechanism 84 for driving the movement of the second turnover panel 82.Preferably, the first driving Mechanism 83 is identical with the structure of the second driving mechanism 85.For ease of fixation, above-mentioned each driving mechanism and guiding mechanism are arranged on collection On the upper surface of cigarette plate 3.

First driving mechanism 83 is arranged on the rear side of smoke-collecting plate 3, and the second driving mechanism 85 is arranged on the front side of smoke-collecting plate 3. Or, or, the first driving mechanism 83 is arranged on the front side of smoke-collecting plate 3, and the second driving mechanism 85 is arranged on smoke-collecting plate 3 Front side.Wherein, the first driving mechanism 83 and the second driving mechanism 85 alternatively, can also adopt preferably using electric pushrod With other load can be promoted to make the mechanism of straight reciprocating motion.

Guiding mechanism 84 includes the first guide rail 841 and the second guide rail 842, wherein after the first guide rail 841 is located at smoke-collecting plate 3 Side, and the second guide rail 842 is located at the front side of smoke-collecting plate 3, the first guide rail 841 and the second guide rail 842 prolong respectively from 3 left side of smoke-collecting plate Reach the right side of smoke-collecting plate 3.

Offer the first sliding groove 843 upwardly extended in left and right side on first guide rail 841 and the second guide rail 842, two In correspondence with each other, each the first sliding groove 843 extends to the centre of smoke-collecting plate 3 from the left side of smoke-collecting plate 3 to the first sliding groove 843.First leads The second sliding slot 844 upwardly extended in left and right side, two the second sliding slots 844 are also offered on 841 and second guide rail 842 of rail In correspondence with each other, each second sliding slot 844 extends to the centre of smoke-collecting plate 3 from the right side of smoke-collecting plate 3.The first sliding groove per one side 843 and second sliding slot 844 it is least partially overlapped in the centre of smoke-collecting plate 3, and be overlapped part go to upper and lower arrangement.

First turnover panel 81 is between the first guide rail 841 and the second guide rail 842, and the front and rear ends of the first turnover panel 81 First pulley 845 is respectively arranged with for being slidably matched with the first sliding groove 843.In the present embodiment, the first turnover panel 81 is forward and backward Both ends are respectively arranged with spaced apart two first pulleys 845.To avoid interference with the action of the first turnover panel 81, the first driving machine Structure 83 is arranged on the rear side of the first guide rail 841, i.e. the first driving mechanism 83 and the first turnover panel 81 are separately positioned on the first guide rail 841 Both sides, therefore, the first sliding groove 843 on the first guide rail 841 is straight slot.

The part of each the first sliding groove 843 is be overlapped with the first air inlet hole 31, so that the first turnover panel 81 can be completely covered the One air inlet hole 31.Each the first sliding groove 843 includes being located at the first extension 8431 on the left of 3 upper surface of smoke-collecting plate, positioned at collection cigarette The second extension 8432 among 3 upper surface of plate, wherein, the right part of the first extension 8431 exceeds the right side of the first air inlet hole 31 Side end or right-hand end at least with the first air inlet hole 31 flush.Second extension 8432 is from the right end of the first extension 8431 Portion extends to the right and is formed after tilting upward bending, and thus the height of the second extension 8432 is higher than the height of the first extension 8431 Degree.And the second sliding slot 844 can extend horizontally always, and it is corresponding to the height of the first extension 8431, therefore, in the first sliding groove 843 and second sliding slot 844 lap, the second sliding slot 844 is located at the lower section of the second extension 8432 of the first sliding groove 843. Alternatively, or the shape of 843 and second sliding slot 844 of the first sliding groove is exchanged, i.e., the first sliding groove 843 always prolong by level It stretches, and the second sliding slot 844 has horizontal-extending part and is folded upward at the part of extension.

Second turnover panel 82 is between the first guide rail 841 and the second guide rail 842, and the front and rear ends of the second turnover panel 82 Second pulley 846 is respectively arranged with for being slidably matched with the second sliding slot 844.In the present embodiment, the second turnover panel 82 is forward and backward Both ends are respectively arranged with spaced apart two second pulleys 846.To avoid interference with the action of the second turnover panel 82, the second driving machine Structure 85 is arranged on the front side of the second guide rail 842, i.e. the second driving mechanism 85 and the second turnover panel 82 are separately positioned on the second guide rail 842 Both sides, therefore, the second sliding slot 844 on the second guide rail 842 is straight slot.

The part of the second sliding slot 844 on second guide rail 842 is be overlapped with the second air inlet hole 32, so that the second turnover panel 82 can be with The second air inlet hole 32 is completely covered.The height of second sliding slot 844 can be with the height of the first extension 8431 of the first sliding groove 843 It is identical.

One of first pulley 845 that the rear end of first turnover panel 81 is set passes through 86 and first driving mechanism 83 of connecting rod Output terminal is rotatablely connected, so that the first turnover panel 81 can also have the action of upward lifting while movement.Before second turnover panel 82 One of second pulley 846 that end is set is connected with the output terminal of the second driving mechanism 85.

When range hood works, the first driving mechanism 83 and the second driving mechanism 85 start operating, will be covered in first The first turnover panel 81 at air inlet hole 31, the second turnover panel 82 being covered at the second air inlet hole 32 are opposite to each other respectively to smoke-collecting plate 3 Centre is mobile.Due to having the second extension 8432 of upward lifting in the first sliding groove 843, the first turnover panel 81 is in movement During to the second extension 8432, can lifting with the second turnover panel 82 so as to staggering upwards, until two turnover panels are all moved to collection cigarette The centre of plate 3, without having Chong Die part with respective air inlet hole, the first air inlet hole 31 and the second air inlet hole 32 are beaten completely It opens, referring to Fig. 1 and Fig. 3.Or according to the situation of culinary art one of turnover panel can also only be driven to act.

When range hood is closed, the first driving mechanism 83 and the second driving mechanism 85 start operating, by intermediate first The arranged on left and right sides liftoff movement opposite to each other to smoke-collecting plate 3 respectively of turnover panel 81, the second turnover panel 82 is covered each by each until being moved to Corresponding first air inlet hole, 31 and second air inlet hole 32, closes entire smoke-collecting plate 3, is integrally formed, referring to Fig. 5 and Fig. 6.Thus may be used The strainer and blower fan system compared with greasy dirt are hidden, effectively prevents the taint of odour of oil smoke, while range hood is made to seem neat and tidy, it is convenient clear It washes, improves significantly to air in kitchen environment.

The move mode of above-mentioned this turnover panel, reduces installation space, and two air inlet holes can be caused all to be directed to stove respectively Respective burner on tool makes full use of negative pressuren zone to concentrate and is oriented to, promotes smoke absorption effect；And two air inlet holes can be according to stove Platform service condition is adjusted, and accomplishes precisely straight inhale.

Referring to Fig. 2, Fig. 7 and Fig. 8, in the present embodiment, it is preferred that blower fan system 4 include two can independent operation the One ternary wind turbine 41 and the second ternary wind turbine 42, two ternary fan parallel-connections are set.By using 3 d impeller, compared to centrifugation Flow efficiency can be significantly increased in wind turbine, improve air quantity.

First ternary wind turbine 41 includes the first spiral case 411 and the first 3 d impeller 412 being arranged in the first spiral case 411, Second ternary wind turbine 42 includes the second spiral case 421 and the second 3 d impeller 422 being arranged in the second spiral case 421.First spiral case 411 and second spiral case 421 side by side, compartment of terrain arrangement, be formed with the first air inlet 413, the second spiral case 421 on the first spiral case 411 On be formed with the second air inlet 423, away from each other, i.e. the air inlet 313 of the first spiral case 411 is formed in the air inlet of two spiral cases One side away from the second spiral case 421, two back-to-back settings of spiral case so that two ternary wind turbines are arranged side by side in left and right, and First air inlet 413 is towards the left side of cabinet 2, the second air inlet 423 towards the right side of cabinet 2.Oil smoke enters from exhaust fume collecting hood 1 When, it is entered respectively from arranged on left and right sides in blower fan system 4.The first oil smoke passage 441, the first oil smoke are formed in first spiral case 411 The top of passage 441 forms the first air outlet 414, and the second oil smoke passage 442, the second oil smoke passage are formed in the second spiral case 421 442 tops form the second air outlet 424, the first air outlet 414 and the second air outlet 424 side by side, compartment of terrain arrangement.

The prior art can be used in first 3 d impeller 412 and the second 3 d impeller 422, such as the Application No. of the applicant 201620102790.9 patent disclosed in structure.First 3 d impeller 412 and the second 3 d impeller 422 share same Driving motor 43, driving motor 43 are arranged between the first spiral case 411 and the second spiral case 421, and driving motor 43 has dual output Axis, the output shaft 431 thus extended to the left can be connected with the first 3 d impeller 412 and the first 3 d impeller 412 driven to operate, to The output shaft 431 of right extension can be connected with the second 3 d impeller 422 and the second 3 d impeller 422 is driven to operate.Thus may be such that Two ternary wind turbines have preferable synchronism, while again can be energy saving.

First 3 d impeller 412 and the second 3 d impeller 422 can be respectively from the horizontal by 60 °~90 °, two impellers (the first 3 d impeller 412 is tilted to the left, and the second 3 d impeller 422 is tilted to the right) is tilted in the opposite direction, it is possible thereby to Reduce windage, improve smoke absorption effect.The center of first 3 d impeller 412 and 25 entrance of air passage of range hood keep certain Distance, the distance are 1~2 times of diameter of the first 3 d impeller 412, the center of the second 3 d impeller 422 and range hood 25 entrance of air passage maintains a certain distance, which is 1~2 times of the diameter of the second 3 d impeller 422, impeller center and air passage The distance of 25 entrances has to be larger than impeller diameter, and the strainer 26 of such 25 inlet of air passage can just play a role, but can not be big In 2 times of diameters, otherwise apart from negative pressure region apart from too far.

Same structure, and this arrangement, blower fan system overall volume may be employed in above-mentioned two ternary wind turbine It is smaller, 2 original size of cabinet can not changed in the case where keeping higher wind pressure and can so that air quantity is double, improves and inhales Oil smoke efficiency.Two air inlets are respectively facing arranged on left and right sides so that the negative pressure region area increase of two side peripheries, suitable for two A kitchen range achievees the effect that not run cigarette；Noise transmission path makes towards arranged on left and right sides rather than direction in the prior art User thus reduces noise.

The top of blower fan system 4 is provided with outlet housing 5, and the cover body 51 of outlet housing 5 covers the first of the first ternary wind turbine 41 First air outlet 414 of spiral case 411, the second spiral case 421 of the second ternary wind turbine 42 the second air outlet 424 and connect. In the present embodiment, outlet housing 5 includes cover body 51, the deflector being arranged in cover body 51.Cover body 51 is in hollow tubular, and Opposite first end 511 (lower end) and second end 512 (upper end) opening, the bore of first end 511 are more than the mouth of second end 512 Footpath is open and is gradually reduced from close to the position of blower fan system 4 to away from the position of blower fan system 4, oil smoke air-flow is from first end 511 enter in cover body 51, and leave cover body 51 into the external pipe being connected with outlet housing 5 from second end 512.

Deflector includes the first deflector 521 and the second deflector 522, and the first deflector 521 is from the first end of cover body 51 511 extend to second end 512, and the first deflector 521 is at the first end 511 of cover body 51, with the first ternary wind turbine 41 First edge of the second air outlet 424 close to the second ternary wind turbine 42 at the first air outlet 414 be 415 (the first air outlet Right edge) corresponding, second air outlet of second deflector 522 at the first end 511 of cover body 51, with the second ternary wind turbine 42 Second edge 425 (left side edge of the second air outlet) of the first air outlet 414 close to the first ternary wind turbine 41 at 424 is right It should.Each deflector has the width extended in front and rear direction.First deflector 521 by first end 511 to second end 512, The second deflector 522 (to the right) is increasingly towards to tilt, the second deflector 522 by first end 511 to second end 512, be increasingly towards First deflector 521 tilts (to the left), i.e., each deflector deviates intermediate position into 51 top of cover body from 51 bottom of cover body Between position extension.First deflector 521 is mutually connected with the top of the second deflector 522 (close to the second end 512 of cover body 51) It connects, it is preferred that the junction of two deflectors is in rounding off, so as to guide air-flow smooth transition.

5211,5212 madial wall always with cover body 51 of front and rear sides side of first deflector 521 is connected, the second water conservancy diversion 5221,5222 madial wall always with cover body 51 of front and rear sides side of plate 522 is connected.Thus it is divided into cover body 51 in cover body 51 Between the first diffusion runner 531,51 madial wall of cover body and the second deflector 522 between madial wall and the first deflector 521 Second diffusion runner 532, the first diffusion runner 531 and the second diffusion runner 532 are independent mutually.First diffusion runner 531 is in cover It is corresponding with the first air outlet 414 of the first ternary wind turbine 41 at the first end 511 of body 51, that is, the first air outlet 414 is completely covered, Second diffusion runner 532 is corresponding with the second air outlet 424 of the second ternary wind turbine 42 at the first end 511 of cover body 51, i.e., complete The second air outlet of all standing 424.The sectional area of first diffusion runner 531 is gradually reduced by first end 511 to second end 512, the The sectional area first end 511 of two diffusion runners 532 to second end 512 is gradually reduced, as a result, at the top of the first diffusion runner 531 Muzzle velocity is more than the muzzle velocity of 531 bottom of the first diffusion runner, and the muzzle velocity at the top of the second diffusion runner 532 is more than the The muzzle velocity of two diffusion runners, 532 bottom.

By setting above-mentioned deflector so that first connected with the first air outlet 414 of the first ternary wind turbine 41 is expanded Pressure runner 531, the air velocity of the second diffusion runner 42 connected with the second air outlet 424 of the second ternary wind turbine 42 connect each other Closely.This guide functions of outlet housing 5 are conducive to exit gas and form laminar flow, are formed after laminar flow into external pipe, avoided The defects of air-flow is directly entered external pipe after being come out from spiral case with turbulent condition also avoids the air outlet of two ternary wind turbines Strong friction and shock when air-flow mixes so as to which flow losses be greatly lowered, improves efficiency.

Sound-absorbing hole 54 is densely covered on first deflector 521 and/or the second deflector 522, advantageously reduces outlet noise.For Noise is further reduced, space that can also be between the first deflector 521 and the second deflector 522 sets partition plate 55 so that Space between first deflector 521 and the second deflector 522 is divided at least two resonant cavities 551.Alternatively, can also be Space between first deflector 521 and the second deflector 522 sets acoustical cotton.Alternatively, partition plate can also be replaced with reinforcing rib 55, to enhance the intensity of deflector.

The form of above-mentioned this two fans vertical display in parallel, the most strong negative pressuren zone face that can cause blower fan system 4 are left The air-flow that right both sides enter, and double air intake passages on smoke-collecting plate 3 can cause the air-flow that lower section enters from left and right sides negative pressure Most strong region enters blower fan system 4, reduces the escapement ratio of oil smoke.

Embodiment two

Referring to Fig. 9 and Figure 10, in the present embodiment, with above-described embodiment one the difference is that, the first ternary wind turbine 41 and second ternary wind turbine 42 share same spiral case 44, i.e. the first 3 d impeller 412 and the 2nd 3 of the first ternary wind turbine 41 Second 3 d impeller 422 of first wind turbine 42 is co-located in same spiral case 44.

Installing plate 45 is provided between two 3 d impellers, so as to separate two 3 d impellers the two of installing plate 45 Side, installing plate 45 extend to the top of spiral case 44, so as to be separated into two independent 441 Hes of the first oil smoke passage in spiral case 44 Second oil smoke passage 442.Driving motor 43 passes through from installing plate 45 and is connected fixation with installing plate 45.

In the present embodiment, outlet housing 5 only includes cover body 51 and the deflector 56 being arranged in cover body 51, deflector 56 Extend on the flow direction of oil smoke, in the present embodiment, to extend in the longitudinal direction, position and 45 phase of installing plate of deflector 56 It is corresponding, so as to which cover body 51 be divided into and corresponding the first independent diffusion runner 531 of oil smoke passage in spiral case 44 and the Two diffusion runners 532.

Alternatively, outlet housing 5 can also use the structure of embodiment one.

Claims (12)

1. a kind of range hood, including exhaust fume collecting hood (1) and the cabinet (2) being arranged on above exhaust fume collecting hood (1), the exhaust fume collecting hood (1) Upward concave smoke collecting chamber (13) is inside formed with, the bottom of the smoke collecting chamber (13) is provided with smoke-collecting plate (3), the cabinet (2) Inside it is provided with blower fan system (4), it is characterised in that：The blower fan system (4) includes the first ternary wind turbine (41) being arranged in parallel With the second ternary wind turbine (42), spaced apart first air inlet hole (31) on left and right direction is offered on the smoke-collecting plate (3) With the second air inlet hole (32), the of the first air inlet hole (31) can movably be opened or closed by being provided with above the smoke-collecting plate (3) One turnover panel (81) and the second turnover panel (82) that can movably open or close the second air inlet hole (32).

2. range hood according to claim 1, it is characterised in that：First turnover panel (81) and the second turnover panel (82) exist Opposite or opposite liftoff movement, first turnover panel (81) and the second turnover panel (82) are towards smoke-collecting plate (3) on left and right direction It is gone to upper and lower staggeredly when mobile among top.

3. range hood according to claim 2, it is characterised in that：It is provided with to guide above the smoke-collecting plate (3) First turnover panel (81) and the guiding mechanism (84) of the second turnover panel (82) movement, the guiding mechanism (84) are included in smoke-collecting plate (3) The first guide rail (841) for setting respectively of front and rear sides and the second guide rail (842), first guide rail (841) and the second guide rail (842) right side is extended on the left of smoke-collecting plate (3) respectively；It is opened up on first guide rail (841) and the second guide rail (842) Have the first sliding groove (843) upwardly extended in left and right side and the second sliding slot (844), two the first sliding grooves (843) in correspondence with each other, And centre is extended on the left of smoke-collecting plate (3) respectively, two the second sliding slots (844) are in correspondence with each other and respectively from collection cigarette Centre is extended on the right side of plate (3), the front and rear ends of first turnover panel (81) is slidably matched respectively with the first sliding groove (843), The front and rear ends of second turnover panel (82) is slidably matched respectively with the second sliding slot (844), and two sliding slots are in smoke-collecting plate (3) Part that is intermediate least partially overlapped and being overlapped goes to upper and lower interlaced arrangement.

4. range hood according to claim 3, it is characterised in that：First guide rail (841) is located at smoke-collecting plate (3) Rear side, second guide rail (842) are located at the front side of smoke-collecting plate (3), and the rear side above the smoke-collecting plate (3), which is additionally provided with, to be used for The first driving mechanism (83) for driving the first turnover panel (81) mobile；The front and rear ends of first turnover panel (81) is respectively arranged with The first pulley (845) being slidably matched with the first sliding groove (843), first driving mechanism (83) are arranged on the first guide rail (841) rear side, thus first driving mechanism (83) and the first turnover panel (81) are separately positioned on the two of the first guide rail (841) Side, the output of the one of first pulley (845) and the first driving mechanism (83) of the rear end setting of first turnover panel (81) End is connected through corresponding the first sliding groove (843).

5. range hood according to claim 4, it is characterised in that：Each the first sliding groove (843) includes being located at smoke-collecting plate (3) the first extension (8431) on the left of, the second extension (8432) among smoke-collecting plate (3), second extension (8432) extend to the right after tilting upward bending from the right part of the first extension (8431) and formed, thus the second extension (8432) height is higher than the height of the first extension (8431) and the second sliding slot (844).

6. range hood according to claim 5, it is characterised in that：The rear end of first turnover panel (81) is set wherein One first pulley (845) is rotatablely connected by connecting rod (86) and the output terminal of the first driving mechanism (83).

7. range hood according to claim 3, it is characterised in that：First guide rail (841) is located at smoke-collecting plate (3) Rear side, second guide rail (842) are located at the front side of smoke-collecting plate (3), and the front side above the smoke-collecting plate (3), which is additionally provided with, to be used for The second driving mechanism (85) for driving the second turnover panel (82) mobile；The front and rear ends of second turnover panel (82) is respectively arranged with The second pulley (846) being slidably matched with the second sliding slot (844), second driving mechanism (85) are arranged on the second guide rail (842) front side, thus second driving mechanism (85) and the second turnover panel (82) are separately positioned on the two of the second guide rail (842) Side, the output of the one of second pulley (846) and the second driving mechanism (85) of the front end setting of second turnover panel (82) End is connected through corresponding second sliding slot (844).

8. range hood according to claim 1, it is characterised in that：The first ternary wind turbine (41) includes the first ternary Impeller (412) and the first air inlet (413), the second ternary wind turbine (42) include the second 3 d impeller (422) and second into Air port (423), on oil smoke flow path, second air inlet (413) is equal with the first air inlet (413) position, described First air inlet (413) is set up in parallel with the second air inlet (413) and is respectively facing the arranged on left and right sides of cabinet (2).

9. range hood according to claim 8, it is characterised in that：First ternary leaf of the first ternary wind turbine (41) (412), the second 3 d impeller (422) of the second ternary wind turbine (42) are taken turns respectively from the horizontal by 60 °~90 °, and Two 3 d impellers tilt in the opposite direction.

10. range hood according to claim 8, it is characterised in that：The first ternary wind turbine (41) further includes first Spiral case (411), first 3 d impeller (412) are arranged in the first spiral case (411), and the second ternary wind turbine (42) is also wrapped The second spiral case (421) is included, second 3 d impeller (422) is arranged in the second spiral case (421), first spiral case (411) It is spaced, is arranged side by side with the second spiral case (421), first air inlet (413) is formed on the first spiral case (411), described Second air inlet (423) is formed on the second spiral case (421), and the first oil smoke passage is formed in first spiral case (411) (441), the top of the first oil smoke passage (441) forms the first air outlet (414), is formed in second spiral case (421) There is the second oil smoke passage (442), the top of the second oil smoke passage (442) forms the second air outlet (424).

11. range hood according to claim 8, it is characterised in that：First 3 d impeller (412) and the second 3 d impeller (422) it is spaced, is arranged side by side in same spiral case (44), with corresponding first air inlet of the first 3 d impeller (412) (413), the opposite both sides of spiral case (44) are respectively formed at corresponding second air inlet (423) of the second 3 d impeller (422), Installing plate (45) is provided between first 3 d impeller (412) and the second 3 d impeller (422), the installing plate (45) is prolonged The top of spiral case (44) is reached, so as to which two the first independent oil smoke passages (441) and the second oil will be separated into spiral case (44) Cigarette channel (442), the top of the first oil smoke passage (441) form the first air outlet (414), the second oil smoke passage (442) top forms the second air outlet (424).

12. the range hood according to claim 10 or 11, it is characterised in that：It further includes and is arranged on the first 3 d impeller (412) driving motor (43) between the second 3 d impeller (422), the driving motor (43), which has, is respectively used to driving the The double output shaft of one 3 d impeller (412) and the second 3 d impeller (422).