CN208547015U - Kitchen ventilator - Google Patents

Abstract

The utility model discloses a kind of kitchen ventilators, the kitchen ventilator includes shell in hollow structure, it is with opposite top and bottom, the upper end of the shell is provided with smoke outlet, setting is provided with the blower of oil smoke suction force in the shell, and the shell is provided with side casing parts and top housing section from bottom to top；Wherein, the side casing parts include: inclination chamber, and the inclination chamber includes: to face the wall and meditate outside, and outer face the wall and meditate tilts to the inside of the inclination chamber from top to bottom, it is described it is outer face the wall and meditate on be provided with the first smoking port, first smoking port is to can form main flue gas channel between the smoke outlet.Kitchen ventilator provided by the utility model can be improved the oil fume pumping-clean rate of kitchen ventilator, to preferably improve the usage experience of user.

Description

Kitchen ventilator

Technical field

The utility model relates to smoke pumping equipment technical field, in particular to a kind of kitchen ventilator.

Background technique

Kitchen ventilator has become one of machine for kitchen use equipment indispensable in Modern Family.Kitchen ventilator major function be Oil smoke is absorbed when culinary art, to maintain the good environment in one, kitchen.

Currently, the oil fume pumping-clean rate of kitchen ventilator is not relatively also high, the oil smoke generated in cooking cannot efficiently thoroughly by Kitchen ventilator is siphoned away.Wherein, on the one hand the oil smoke not absorbed by kitchen ventilator escaped out can generate human health serious Harm, it is greasy on the other hand to will lead to kitchen integrated environment, increases subsequent cleaning and use cost.

Under a specific usage scenario, for the open kitchen of more and more families selection, carrying out The moment of quick-fried can generate a large amount of oil smoke, and just to indexs such as the oil fume pumping-clean rates of kitchen ventilator, more stringent requirements are proposed for this.

How fumes escaping amount is reduced as far as possible, further how to guarantee that a small amount of oil smoke escaped out also can be by oil smoke Machine suction, to improve the oil fume pumping-clean rate of kitchen ventilator, so that the usage experience for preferably improving user is those skilled in the art Need the technical issues of continuously improving for a long time.

Utility model content

The purpose of the utility model is to provide a kind of kitchen ventilators, can be improved the oil fume pumping-clean rate of kitchen ventilator, thus preferably The usage experience of ground raising user.

Following technical proposal can be used to realize in the above-mentioned purpose of the utility model:

A kind of kitchen ventilator, comprising: the kitchen ventilator includes shell in hollow structure, with opposite upper end under End, the upper end of the shell are provided with smoke outlet, and setting is provided with the blower of oil smoke suction force in the shell, and the shell is certainly Side casing parts and top housing section are provided on down；Wherein,

The side casing parts include: inclination chamber, and the inclination chamber includes: to face the wall and meditate outside, described to face the wall and meditate from top to bottom to institute outside State the inside inclination of inclination chamber, it is described it is outer face the wall and meditate on be provided with the first smoking port, first smoking port to the smoke outlet it Between can form main flue gas channel.

Further, the side casing parts further include the vertical chamber being connected to the inclination chamber, along flow of flue gas direction It is set to the downstream of the inclination chamber.

Further, be provided with the second smoking port on the top housing section, second smoking port to the smoke outlet it Between can form auxiliary exhaust gases passes, the porosity of first smoking port is greater than the porosity of second smoking port.

Further, second smoking port is to be open along the multiple groups that the outer edge interval of the top housing section opens up.

Further, the top shell has opposite bottom surface and top surface, and is disposed around between the bottom surface and top surface Side, the multiple groups opening is arranged on the bottom surface, and is arranged into half envelope along the boundary line of the bottom surface and the side Closed form.

Further, the outer angular range faced the wall and meditated with gravity direction are as follows: 2 degree to 15 degree.

Further, described vertical intracavitary to be additionally provided with the panel turnover mechanism that open or close the main flue gas channel.

Further, further include air draught for flue gas to be oriented to the blower from the approach axis of first smoking port The guide portion in direction.

Further, it is intracavitary to be set to the inclination for the guide portion, and the guide portion has opposite first end and the Two ends, the second end are higher than the first end, wherein and the first end is located at the lower section of first smoking port, and described the Two ends are fixed on the inclination chamber and face the wall and meditate on opposite inner wall outside with described.

Further, the guide portion and the outer angular range faced the wall and meditated of the inclination chamber are 25 degree of -120 degree.

Further, the two sides of the side casing parts are additionally provided with wind deflector.

Further, the top housing section includes the front block unit extended, and the front block unit constitutes with the wind deflector Cigarette district.

The technical solution that there is provided by above the application embodiment is as it can be seen that kitchen ventilator provided herein, in shell Top housing section and side casing parts are arranged in lower part, wherein the side casing parts include inclination chamber, and the inclination Cavity surface is to the outer of user The first smoking port of upper setting of facing the wall and meditating can be supported when first smoking port, which is arranged in, faces the wall and meditates upper outside the inclination of oil smoke The non-uniform problem of air inlet caused by the height that disappears, homogenization promotes the effect of suction when can realize side air inlet, in turn The oil fume pumping-clean rate of kitchen ventilator is improved, to preferably improve the usage experience of user.

Further, the side casing parts include: vertical chamber and inclination chamber from top to bottom, and the vertical chamber can be used in tieing up It holds and balanced blower generated negative pressure in shell, to generate ideal suction in the first smoking port.

In addition, being matched with first smoking port, further by the way that the second smoking port is arranged on the top housing section Improve the oil fume pumping-clean rate of the kitchen ventilator.

Detailed description of the invention

Fig. 1 is the structural schematic diagram for the kitchen ventilator that one embodiment of the application provides；

Fig. 2 is the explosive view for the kitchen ventilator that the application Fig. 1 is provided；

Fig. 3 is the side view for the kitchen ventilator that the application Fig. 1 is provided；

Fig. 4 is the structural schematic diagram for showing the distribution of the second smoking port for the kitchen ventilator that the application Fig. 1 is provided；

Fig. 5 is the structural representation that the kitchen ventilator that one embodiment of the application provides decomposites panel turnover mechanism and wind deflector Figure.

Description of symbols:

Blower -1；Top housing section -2；Side casing parts -3；Vertical chamber -31；Tilt chamber -32；Face the wall and meditate -320 outside；First smoking Mouth -321；Second smoking port -311；Panel turnover mechanism -4；Guide portion -5；Wind deflector -6；Front block unit -7.

Specific embodiment

Below in conjunction with the drawings and specific embodiments, elaborate to the technical solution of the utility model, it should be understood that this A little embodiments are merely to illustrate the utility model rather than limitation the scope of the utility model, read the utility model it Afterwards, those skilled in the art each fall within the application appended claims to the modification of the various equivalent forms of the utility model and are limited In fixed range.

It should be noted that it can directly on the other element when element is referred to as " being set to " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", "upper", "lower", "left", "right" and similar statement for illustrative purposes only, are not meant to be the only embodiment.

Unless otherwise defined, all technical and scientific terms used herein and the technical field for belonging to the application The normally understood meaning of technical staff is identical.The term used in the description of the present application is intended merely to description tool herein The purpose of the embodiment of body, it is not intended that in limitation the application.Term as used herein "and/or" includes one or more Any and all combinations of relevant listed item.

The utility model provides a kind of kitchen ventilator, can be improved the oil fume pumping-clean rate of kitchen ventilator, uses to preferably improve The usage experience at family.

Fig. 1 to Fig. 3 is please referred to, a kind of kitchen ventilator provided in the application embodiment may include: in hollow knot The shell of structure, with opposite top and bottom, the upper end of the shell is provided with smoke outlet, is provided with and mentions in the shell For the blower 1 of oil smoke suction force, the shell is provided with side casing parts 3 and top housing section 2 from bottom to top；Wherein, the side shell Part 3 includes: inclination chamber 32, the inclination chamber 32 include: it is outer face the wall and meditate 320, it is described to face the wall and meditate 320 from top to bottom to the inclination outside The inside of chamber 32 tilts, and outer face the wall and meditate is provided with the first smoking port 321, first smoking port 321 to the smoke evacuation on 320 Main flue gas channel can be formed between mouthful.

Specifically, the kitchen ventilator may include shell in hollow structure, which has opposite top and bottom, institute It states shell and the position of the upper end is provided with smoke outlet, the smoke outlet is connected with the external world, the oil generated when will cook Cigarette guiding is extraneous.

The blower 1 is arranged in the shell, for providing the driving force of flow of flue gas for kitchen ventilator.Specifically, should Blower 1 can be one, or multiple.Wherein, the structure of the blower 1 itself and its setting position and set-up mode etc. Can be different according to the difference of actual use scene, the application does not make specific limit herein.In general, blower 1 is arranged There are motor, spiral case and the impeller being arranged in spiral case etc..Wherein, there is the spiral case opposite volute inlet and spiral case to go out Mouthful.Impeller rotates after electrical power, and air-flow can flow to volute outlet from volute inlet.

In the present embodiment, the lower part of the shell is provided with 2 He of top housing section close to the position of oil smoke generating source Side casing parts 3.The side of the top housing section 2 can intersect and be connected with the upside of side casing parts 3.The side section is located at top The downside of shell parts 2, near the position of oil smoke generating source.The side casing parts 3 are used as main smoking housing parts, in blower Under the premise of 1 starting, oil smoke passes through the side casing parts 3 into shell at the first time.

In the present embodiment, the side casing parts 3 may include inclination chamber 32, it is described it is outer face the wall and meditate 320 from top to bottom to The inside inclination of the inclination chamber 32.Outer face the wall and meditate is provided with the first smoking port 321 on 320.As for main smoking port The side casing parts 3 are arranged in one smoking port 321 when facing the wall and meditating on 320 with certain tilt angle outer, using facing the wall and meditating 320 outside The incline structure of formation can offset the non-uniform problem of air inlet caused by height, homogenization when can realize side air inlet Promote the effect of suction.

In one embodiment, the side casing parts 3 can also include the vertical chamber 31 being connected to the inclination chamber 32, Its downstream that the inclination chamber 32 is set to along flow of flue gas direction.

In the present embodiment, the side casing parts 3 may include: vertical chamber 31 and inclination chamber 32 from top to bottom.Wherein, For the vertical chamber 31 on the direction extended along lengthwise, sectional area can be identical or essentially identical, to be conducive to maintain The generated negative pressure in shell of blower 1.

The inclination chamber 32 can specifically include: 320 be faced the wall and meditated outside, with the outer 320 opposite mounting walls of facing the wall and meditating, Yi Jishe It sets in the outer the first side wall and second sidewall faced the wall and meditated between 320 and the mounting wall.Wherein, described outer to face the wall and meditate 320 from upper And lower inward slant.

Wherein, outer 320 tilt angle of facing the wall and meditating is small angle inclination.Specifically, outer face the wall and meditate 320 and the gravity The angular range in direction can be with are as follows: 2 degree to 15 degree.When it is described it is outer face the wall and meditate 320 with the angle of gravity direction be above-mentioned low-angle when, Homogenization promotes the effect of suction when can preferably realize side air inlet, and can overcome due to inclination angle it is excessive caused by Negative pressure caused by the abrupt change of cross-section loses serious problem and due to the unconspicuous problem of the too small caused equalizing effect in inclination angle.

In use, first smoking port 321 is to can form main cigarette after the blower 1 unlatching between the smoke outlet Gas channel, most flue gases that flue gas generating source generates can enter shell by first smoking port 321 in time, subsequent It is discharged from the smoke outlet.

Top housing section 2 and side casing parts 3 is arranged in the lower part of shell in kitchen ventilator provided in the application embodiment, Wherein, the side casing parts 3 include inclination chamber 32, outer face the wall and meditate 320 on setting first smoking of the inclination chamber 32 in face of user Mouthfuls 321, when first smoking port 321, which is arranged in, is faced the wall and meditated on 320 outside the inclination of oil smoke, height can be offset and drawn The non-uniform problem of air inlet risen, homogenization promotes the effect of suction when can realize side air inlet, and then improves kitchen ventilator Oil fume pumping-clean rate, thus preferably improve user usage experience.

Further, the side casing parts 3 include: vertical chamber 31 and inclination chamber 32, vertical 31 energy of chamber from top to bottom It is enough in maintenance and the balanced generated negative pressure in shell of blower 1, to generate ideal suction in the first smoking port 321.

Fig. 4 is please referred to, in order to further increase the oil fume pumping-clean rate of the kitchen ventilator, realization oil smoke zero as far as possible is escaped Purpose, be provided with the second smoking port 311 on the top housing section 2.Second smoking port 311 is to energy between the smoke outlet Form auxiliary exhaust gases passes.The porosity of first smoking port 321 is greater than the porosity of second smoking port 311.

In the present embodiment, after entering shell by 321 uniform high-efficiency of the first smoking port when most of oil smoke, Can may also there are outer face the wall and meditate 320 upwards escapes of a small amount of flue gas along the side casing parts 3 along the shell.By The top housing section 2 is arranged second smoking port 311 and is used as auxiliary smoking port, can be by a small amount of oil smoke suction casing of escape In.When specifically used, after blower 1 starts, second smoking port 311 is logical to that can form auxiliary flue gas between the smoke outlet Road is not sucked by second smoking port 311 by a small amount of oil smoke that first smoking port 321 sucks, is flowed through described auxiliary Exhaust gases passes are helped, it is subsequent to be discharged from smoke outlet.

Comprehensively consider the maintenance of enclosure interior pressure and the reasonable distribution of exhaust gas volumn, the hole of first smoking port 321 Rate is greater than the porosity of second smoking port 311.Porosity specifically refers to: having pore-body in certain thickness bulk material The long-pending percentage of total volume in its natural state with material.For shell, the thickness of general top housing section 2 and side casing parts 3 Degree is not much different, and the difference of the porosity is mainly the number of aperture on unit area, the i.e. size of percent opening.When as institute When stating the porosity of the second smoking port 311, one side can reduce the influence to main flue gas channel negative pressure as far as possible, separately On the one hand it can satisfy the function of adsorbing a small amount of oil smoke again.

Specifically, the porosity ratio of second smoking port 311 and first smoking port 321 may be generally less than 0.6.When the porosity ratio of second smoking port 311 and first smoking port 321 is less than 0.6, the of side casing parts 3 Second smoking port 311 of one smoking port 321 and top housing section 2 matches, and realizes ideal suction effect to oil smoke.

It is found by the applicant that: it is not dispersed in described first mainly by the oil smoke that first smoking port 321 sucks on a small quantity The dispersion oil smoke of the periphery of smoking port 321, after these fumes escapings, generally along the side casing parts 3, the two sides of top housing section 2 It moves up.In order to quickly and efficiently absorb the oil smoke of above-mentioned escape, second smoking port 311 can be for along the top The multiple groups opening that the outer edge interval of shell parts 2 opens up, the jet attached flow effect that can use oil smoke in this way carry out oil smoke Guidance reduces the sense of discomfort of the oil smoke not absorbed by the first ingest mouth 321 generated to cooker as far as possible.

Specifically, the top housing section 2 has opposite bottom surface and top surface, and it is disposed around between the bottom surface and top surface Side.The multiple groups opening is arranged on the bottom surface, and is arranged into half along the boundary line of the bottom surface and the side Enclosed type.

Wherein, the type semienclosed concrete shape can be set according to the specific configuration of the top housing section 2.Such as figure Shown in 4, when the top housing section 2 is the cuboid-type of rule, the multiple groups opening can be arranged as " ㄇ " type.For example, working as institute When stating the irregular shape that the edge of top housing section 2 connects in tool there are two circular arc, the multiple groups opening arrays can be arranged as Bicircular arcs type.The structure that the shape of certain top housing section 2 can be deformed with other, the corresponding multiple groups opening Arrangement mode can also be adaptively adjusted, and specific spread pattern the application of multiple groups opening does not make unique limit herein. When a small amount of oil smoke is moved up along periphery, can enter in the ring of encirclement of the type semienclosed multiple groups opening, thus complete It is absorbed entirely, realizes zero escape of oil smoke.

In one embodiment, the two sides of the side casing parts 3 are additionally provided with wind deflector 6.

Due to not being mainly dispersed in periphery by a small amount of oil smoke that the first smoking port 321 is absorbed, by the way that the wind-guiding is arranged Plate 6 can guide the above-mentioned a small amount of oil smoke escaped out 320 to move along outer face the wall and meditate of the kitchen ventilator, finally by kitchen ventilator Second smoking port 311 is absorbed.

Further, the top housing section 2 can also include the front block unit 7 extended, the front block unit 7 and the wind-guiding Plate 6 constitutes cigarette district.By the way that the front block unit 7 is arranged in the top housing section 2, so that the front block unit 7 and 6 structure of wind deflector At holding together cigarette district, it is ensured that the oil smoke generated when culinary art is not being absorbed once by the first smoking port 321, also not by second It in the case that smoking port 311 2 times are absorbed, is absorbed again after capable of turning back, passes through 7 wind deflector 6 of front block unit and the first smoking The layout of the 321, second oil suction mouth 311 of mouth, realizes whole similar dual recess triangle negative pressuren zone, so that entire negative pressure region More become into more three-dimensional form, ensure that oil smoke is few excessive in uphill process.

Please refer to Fig. 5, in one embodiment, be additionally provided in the vertical chamber 31 of the kitchen ventilator can open or Close the panel turnover mechanism 4 in the main flue gas channel.

It is found by the applicant that: in the prior art, panel turnover mechanism 4 is generally arranged at the form on smoking port or outside smoking port, The folding of turnover panel can cause flue gas to expand outwardly, and inevitably will lead to the problem of increasing fumes escaping amount.Specifically, traditional The kitchen ventilator inwardly opened and closed in air inlet, turnover panel open and close when there are problems that for internal air duct influence.This is opened and closed outside to inside The placement that also will affect oil network, when oil network is placed in the downstream of turnover panel, there is also filter screen of range hood to dismantle the complicated defect of cleaning.

In the present embodiment, the panel turnover mechanism 4 is arranged in the vertical chamber 31 of the kitchen ventilator, when the starting oil When smoke machine, the panel turnover mechanism 4 opens main flue gas channel, and when closing the kitchen ventilator, the panel turnover mechanism 4 closes the master Exhaust gases passes are located at the downstream of the first smoking port 321, and the first smoking port 321 can generally cooperate the parts such as oil network and lubricating cup, Greasy dirt content in oil smoke can be minimized, a possibility that turnover panel is infected by greasy dirt is reduced using the arrangement, protected The reliability of system is demonstrate,proved.Specifically, the panel turnover component may include: turnover panel, shaft and the motor connecting with the shaft, When the electric motor starting, drives the shaft and turnover panel to rotate, open or close the main flue gas channel.

It, will not when opening or closing since the setting of the panel turnover mechanism 4 provided herein is described vertical intracavitary Have an impact to the flue gas of the first smoking port 321, can preferably guarantee that kitchen ventilator quickly enters efficiently in kitchen ventilator startup stage Working condition, oil smoke can be absorbed rapidly；In kitchen ventilator closed stage, kitchen ventilator can also maintain efficient working condition.This Outside, its setting of panel turnover mechanism 4 provided herein when it is closed, main flue gas channel can be closed in vertical chamber 31 Without influencing to assist exhaust gases passes, the second smoking port 311 can also continue to absorb in the oil smoke escaped on a small quantity.

In one embodiment, guide portion 5 is additionally provided in the inclination chamber 32.

The formation direction of vertical chamber 31 provided herein and inclination 32 its negative pressure of chamber substantially along vertical direction, in order to Biggish suction can be generated in air inlet, present embodiment is in the inclination chamber 32, close to first smoking port 321 Position is provided with guide portion 5.By the guide portion 5 being arranged in the inclination chamber 32, for the negative of winding level direction Range is pressed, to reach the oil smoke elimination effect more having.

Specifically, the guide portion 5 can be in tabular, perhaps can in certain radian plate body structure or It is the structure that plate is combined with radian plate, certainly, which can also be other shapes, itself not make herein unique It limits.It is higher than the first end with opposite first end and second end, the second end, wherein the first end is located at The lower section of first smoking port 321, the second end are fixed on the inner wall of the inclination chamber 32.Wherein, the guide portion 5 Can generally straight panel, can also be generally with the bent plate of certain radian, or the combination of straight panel and bent plate, specifically , the application does not make specific limit herein.

It is found by the applicant that: when the guide portion 5 and the outer angle difference faced the wall and meditated between 320 of inclination chamber 32, it can produce Raw different oil smoke elimination effect.Specifically, when the angle of the guide portion 5 and the inclined wall is between 25 degree of -120 degree When, ideal oil smoke elimination effect can be reached.

When user cooks, after starting kitchen ventilator, starts blower 1 and open turnover panel, at this point, main flue gas channel is beaten It opens, negative pressure is generated in main flue gas runner and in auxiliary flue gas flow channel, to generate the suction force to oil smoke.What culinary art generated Oil smoke can enter main flue gas channel from first smoking port 321 under the suction force that blower 1 generates at the first time first；It is few The oil smoke of amount escape enters auxiliary exhaust gases passes by the second smoking port 311, subsequent to be discharged by smoke outlet.On the whole, originally Kitchen ventilator provided by applying can guarantee that the oil smoke generated when culinary art can be preferably sucked away, therefore substantially increase The oil fume pumping-clean rate of kitchen ventilator, to preferably improve the usage experience of user.

Herein cited any digital value all include between lower limit value to upper limit value with the lower value of an incremented and The all values of upper value, there are the intervals of at least two units between any lower value and any much higher value.For example, such as Fruit elaborates that the quantity an of component or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 To 80, more preferably from 30 to 70, then purpose is arrived in order to illustrate also clearly listing such as 15 to 85,22 in the specification 68,43 to 51,30 to 32 is equivalent.For the value less than 1, suitably think that a unit is 0.0001,0.001,0.01,0.1. These are only intended to the example clearly expressed, it is believed that all possibility for the numerical value enumerated between minimum and peak Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all ranges all include all numbers between endpoint and endpoint.It is used together with range " about " or " approximation " be suitable for two endpoints of the range.Thus, " about 20 to 30 " are intended to cover that " about 20 to about 30 ", including at least the endpoint indicated.

All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot Together in this.Describing combined term " substantially by ... constitute " should include identified element, ingredient, component or step and reality Other elements, ingredient, component or the step of the basic novel feature of the combination are not influenced in matter.Using term "comprising" or " comprising " describes the combination of element here, ingredient, component or step it is also contemplated that substantially by these elements, ingredient, component Or the embodiment that step is constituted.Here by using term " can with ", it is intended to illustrate that " can with " includes described any Attribute is all optional.

Multiple element, ingredient, component or step can be provided by single integrated component, ingredient, component or step.Optionally Ground, single integrated component, ingredient, component or step can be divided into multiple element, ingredient, component or the step of separation.It is used to The open "a" or "an" for describing element, ingredient, component or step is not said to exclude other elements, ingredient, component Or step.

Above-mentioned each embodiment in this specification is described in a progressive manner, identical between each embodiment Similar portion is cross-referenced, and what each embodiment stressed is and other embodiments difference.

The foregoing is merely several embodiments of the utility model, although embodiment disclosed by the utility model is such as On, but the content is only to facilitate the embodiment for understanding the utility model and using, it is practical new to be not intended to limit this Type.Any those skilled in the art of the present invention are not departing from spirit and scope disclosed by the utility model Under the premise of, any modification and variation, but the patent of the utility model can be made in the formal and details of embodiment Protection scope must be still subject to the scope defined in the appended claims.

Claims (12)

1. a kind of kitchen ventilator, which is characterized in that the kitchen ventilator includes shell in hollow structure, with opposite upper end and Lower end, the upper end of the shell are provided with smoke outlet, and setting is provided with the blower of oil smoke suction force, the shell in the shell It is provided with side casing parts and top housing section from bottom to top；Wherein,

The side casing parts include: inclination chamber, and the inclination chamber includes: to face the wall and meditate outside, and outer face the wall and meditate is inclined to described from top to bottom The inside inclination of oblique chamber, it is described it is outer face the wall and meditate on be provided with the first smoking port, first smoking port to energy between the smoke outlet Form main flue gas channel.

2. kitchen ventilator as described in claim 1, which is characterized in that the side casing parts further include being connected to the inclination chamber Vertical chamber is set to the downstream of the inclination chamber along flow of flue gas direction.

3. kitchen ventilator as claimed in claim 2, which is characterized in that the second smoking port is provided on the top housing section, it is described For second smoking port to can form auxiliary exhaust gases passes between the smoke outlet, the porosity of first smoking port is greater than described the The porosity of two smoking ports.

4. kitchen ventilator as claimed in claim 3, which is characterized in that second smoking port is along the outer of the top housing section The multiple groups opening that edge interval opens up.

5. kitchen ventilator as claimed in claim 4, which is characterized in that the top shell has opposite bottom surface and top surface, Yi Jiwei It is located at the side between the bottom surface and top surface, the multiple groups opening is arranged on the bottom surface, and along the bottom surface and institute State side boundary line be arranged into it is type semienclosed.

6. kitchen ventilator as described in claim 1, which is characterized in that the outer angular range faced the wall and meditated with gravity direction are as follows: 2 degree To 15 degree.

7. kitchen ventilator as claimed in claim 2, which is characterized in that it is described it is vertical it is intracavitary be additionally provided with can open or close it is described The panel turnover mechanism in main flue gas channel.

8. kitchen ventilator as described in claim 1, which is characterized in that further include for by flue gas from first smoking port into Enter the guide portion that direction is oriented to the air draught direction of the blower.

9. kitchen ventilator as claimed in claim 8, which is characterized in that the guide portion be set to it is described inclination it is intracavitary, it is described to draw Portion is led with opposite first end and second end, the second end is higher than the first end, wherein the first end is located at described The lower section of first smoking port, the second end are fixed on the inclination chamber and face the wall and meditate on opposite inner wall outside with described.

10. kitchen ventilator as claimed in claim 9, which is characterized in that the outer folder faced the wall and meditated of the guide portion and the inclination chamber Angular region is 25 degree of -120 degree.

11. kitchen ventilator as described in claim 1, which is characterized in that the two sides of the side casing parts are additionally provided with wind deflector.

12. kitchen ventilator as claimed in claim 11, which is characterized in that the top housing section includes the front block unit extended, institute It states front block unit and the wind deflector constitutes cigarette district.