CN102937302B - Air intake and exhaust system and adopt the integrated kitchen range of this device - Google Patents
Air intake and exhaust system and adopt the integrated kitchen range of this device Download PDFInfo
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- CN102937302B CN102937302B CN201210502063.8A CN201210502063A CN102937302B CN 102937302 B CN102937302 B CN 102937302B CN 201210502063 A CN201210502063 A CN 201210502063A CN 102937302 B CN102937302 B CN 102937302B
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Abstract
The invention discloses a kind of air intake and exhaust system and adopt the integrated kitchen range of this device, this integrated kitchen range comprises housing, be positioned at the inlet duct of this housing, air intake and exhaust system, and air-out apparatus, wherein, the inlet channel that this inlet duct comprises air inlet and is connected with this air inlet, this air-out apparatus comprises clarifier, the outlet passageway be connected with this clarifier, and the gas outlet to be connected with this outlet passageway, this air intake and exhaust system comprises the fan house with air entry and exhaust outlet; Be placed in the neck ring at this air entry place; And the blower fan be placed in this fan house, wherein, this blower fan has two blower fan mouths, and corresponding with this neck ring in these two blower fan mouths is the first blower fan mouth, and what be connected with this exhaust outlet is the second blower fan mouth, and this exhaust outlet is connected with this clarifier.The present invention, by arranging neck ring and the first gas outlet, adds the flowing velocity of gas, thus under the motor of Same Efficieney orders about, suction and discharge effect is stronger.
Description
Technical field
The present invention relates to a kind of air intake and exhaust system and adopt the integrated kitchen range of this device.
Background technology
Integrated kitchen range is a kind of collection range hood, gas-cooker, even also has the several functions such as disinfection cabinet, storage cabinet in the kitchen appliance of one.As the integrated kitchen range being integrated with range hood function, the domestic mist extractor mode still generally using exhausting type at present, in dwelling construction, different floors is set up common flue, although solve external wall like this to remain greasy dirt and affect aesthetic problem, but the environmental pollution of air does not obtain basic solution, bring the increase of building cost simultaneously, the discharge flue extended, the check-valves of smoke evacuation, bending air channel increase smoke evacuation resistance more, shared air channel make family occupy between cigarette of altering alter taste problem and also result in the new worry of people.
In order to solve the not smooth problem of the large smoke evacuation of common flue resistance, some integrated kitchen range has given up exhausting type, have employed the principle of circulation range hood.But in actual use, owing to being also the use of the air intake and exhaust system of traditional range hood, blower fan is merely utilized to produce a suction and row's power, therefore the reverse movement of soot gas can affect the suction and discharge efficiency of integrated kitchen range, in order to produce a desired effect, have to increase power of motor and increase wind wheel and wind groove, but energy consumption and noise also increase thereupon like this.And through the gas backstreaming of circulation to indoor, not good or use long when actively not changing scavenging material at clean-up effect, have influence on the health of indoor occupant after inevitable.
Based on the shortcoming of above-mentioned integrated kitchen range, those skilled in the art is devoted to the integrated kitchen range developed a kind of novel air intake and exhaust system and adopt this device, need not increase power of motor, can effectively increase suction and discharge efficiency.
Summary of the invention
For the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of air intake and exhaust system and adopts the integrated kitchen range of this device, and under the motor of Same Efficieney orders about, it can improve suction and discharge efficiency.
For achieving the above object, the invention provides a kind of air intake and exhaust system, comprise: the fan house with air entry and exhaust outlet, be placed in the blower fan in this fan house, and be placed in the neck ring at this air entry place, wherein, this blower fan has two blower fan mouths, corresponding with this neck ring in these two blower fan mouths is the first blower fan mouth, what be connected with this exhaust outlet is the second blower fan mouth, it is characterized in that: also comprise the guide shell that is positioned at this neck ring periphery, the bottom of this guide shell and this first blower fan mouth close.
Present invention also offers a kind of integrated kitchen range, comprising: housing, be positioned at the inlet duct of this housing, air intake and exhaust system, and air-out apparatus, wherein, the inlet channel that this inlet duct comprises air inlet and is connected with this air inlet; This air intake and exhaust system comprises the fan house with air entry and exhaust outlet, be placed in the blower fan in this fan house, and be placed in the neck ring at this air entry place, this air entry is connected with this inlet channel, this blower fan has two blower fan mouths, corresponding with this neck ring in these two blower fan mouths is the first blower fan mouth, and what be connected with this exhaust outlet is the second blower fan mouth; This air-out apparatus comprises the clarifier be connected with this exhaust outlet, the outlet passageway be connected with this clarifier, and the gas outlet be connected with this outlet passageway; This air intake and exhaust system also comprises the guide shell being positioned at this neck ring periphery, and the bottom of this guide shell and this first blower fan mouth close.
This blower fan comprises a motor, two spiral cases, two cigarette grooves and two wind wheels, wherein, this two cigarettes groove is respectively to should the first blower fan mouth and this second blower fan mouth, and its airintake direction is contrary each other, this motor is clipped between this two spiral case with core motor for two shaft, and this two wind wheel is placed in two shaft two ends of this motor respectively.
As optional embodiment, this blower fan comprises a motor, a spiral case, two cigarette grooves and two wind wheels, wherein, this two cigarettes groove is respectively to should the first blower fan mouth and this second blower fan mouth, and its airintake direction is contrary each other, set up division board spiral case to be separated into two cigarette grooves independently in the centre of this spiral case, this motor is fixed on this division board with core motor for two shaft.
This clarifier comprises fume purifying layer, and this fume purifying layer is following one or more combination: milipore filter purifying layer, active carbon purifying layer, titanium dioxide purifying layer and ultraviolet lamp tube.
This gas outlet is corresponding with this air inlet of this inlet duct.
Air inlet oil cleaner screen is mounted with at this air inlet of this inlet duct.
Air intake and exhaust system of the present invention and adopt the integrated kitchen range of this device, by arranging neck ring and the first gas outlet, add the flowing velocity of gas, thus under the motor of Same Efficieney orders about, suction and discharge efficiency is higher.And this integrated kitchen range is by arranging the mode of clarifier, has given up common flue, has saved building cost, solves and altering mutually cigarette at home, altering taste problem, the place that supermarket, basement, public place etc. are difficult to install outer discharge pipe can be widely used in simultaneously.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the internal mechanism schematic diagram of integrated kitchen range of the present invention.
Fig. 2 is the side sectional view of integrated kitchen range of the present invention.
Fig. 3 is the side sectional view of air intake and exhaust system of the present invention.
Fig. 4 is the exploded view of the blower fan of air intake and exhaust system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further elaborated.
As shown in Figure 1, integrated kitchen range of the present invention comprises housing 1, is positioned at the inlet duct 2 of this housing 1, the air intake and exhaust system 3 be connected with this inlet duct 2, and the air-out apparatus 4 be connected with this air intake and exhaust system 3.When this integrated kitchen range works, first oil smoke enters this inlet duct 2, then enters this air intake and exhaust system 3, finally discharges clean air by this air-out apparatus 4.
As shown in Figure 2, this inlet duct 2 comprise air inlet 21 and the inlet channel 22 that is connected with this air inlet 21 when this integrated kitchen range works, oil smoke enters from this air inlet 21, through this inlet channel 22, enters this air intake and exhaust system 3.
As shown in Figure 3, this air intake and exhaust system 3 comprises the fan house 31 with air entry 311 and exhaust outlet 312, be placed in the neck ring 32 at this air entry 311 place, and the blower fan 33 be placed in this fan house 31, wherein, this air entry is connected with this inlet channel, and this blower fan 33 has two blower fan mouths, corresponding with this neck ring 32 in these two blower fan mouths is the first blower fan mouth 331, and what be connected with this exhaust outlet 312 is the second blower fan mouth 332.When this integrated kitchen range works, oil smoke can be divided into two parts, and a part flows out from this first blower fan mouth 331, then along the flowing of this neck ring 32 outer wall, produces a negative pressure, thus increase the oil smoke flow velocity in this neck ring 32 in this neck ring 32 lower port; Another part flows out from this second blower fan mouth 332, through this exhaust outlet 312, enters into air-out apparatus 4.Like this, oil smoke in this neck ring 32 is not only subject to suction, also can be subject to the active force of the oil smoke flowed out from this first blower fan mouth 331, in this case oil smoke flow velocity can be greater than the flow velocity be subject to merely under suction, namely, under the motor of Same Efficieney orders about, the flow velocity of oil smoke adds, so the efficiency of suction and discharge also can significantly improve.Be worth reminding, this air intake and exhaust system 3 is except this air entry 311 and this exhaust outlet 312, and other parts can be closed, spread in this housing 1 to avoid oil smoke; In order to save production cost, this exhaust outlet 312 can be integrated with this second blower fan mouth 332.
As shown in Figure 4, this blower fan 33 comprises a motor 333, two spiral cases 334, two cigarette grooves 335 and two wind wheels 336, wherein this two cigarettes groove 335 is respectively to should the first blower fan mouth 331 and this second blower fan mouth 332, and its air intake direction is contrary each other, this motor 333 is clipped between this two spiral case 334 with core motor for two shaft, this two wind wheel 336 is placed in two shaft two ends of this motor 333 respectively, and this motor 333 is clipped between two spiral cases 334 and makes two cigarette grooves 335 form each other independently two spaces.
As optional embodiment, these two spiral cases can be made up of a spiral case merging, and namely set up division board spiral case to be separated into two cigarette grooves independently in the centre of this spiral case, this motor is fixed on this division board, and two shafts of this motor are through this division board.
Be worth reminding, this air intake and exhaust system 3 also can be bi-motor form, namely this blower fan 33 by two independently little blower fan combine, these two little blower fans respectively have a blower fan mouth, are respectively this first blower fan mouth 331 and this second blower fan mouth 332.
This air intake and exhaust system 3 also comprises the guide shell 34 that is positioned at this neck ring 32 periphery, bottom and this first blower fan mouth 331 of this guide shell 34 close, like this, when this integrated kitchen range works, oil smoke flows out from this first blower fan mouth 331, first upwards flow along this guide shell 34, and then flow downward along this neck ring 32, because the space between this guide shell 34 and this neck ring 32 is narrow and small, the flow velocity of oil smoke can significantly improve, the negative pressure produced in this neck ring 32 lower port also can significantly improve, thus more improves the oil smoke flow velocity in this neck ring 32.Be worth reminding, in order to reduce the resistance produced owing to changing oil smoke flow direction, the upper end of this neck ring 32, no matter be inwall or outer wall, can cambered design be adopted, and when be provided with this guide shell 34, the longitudinal length of this neck ring 32 can suitably reduce.
This air-out apparatus 4 comprises the clarifier 41 be connected with this second gas outlet 332, the outlet passageway 42 be connected with this clarifier 41, and the gas outlet 43 be connected with this outlet passageway 42, and wherein this clarifier 41 is for purifying oil fume.When this integrated kitchen range works, oil smoke, through the purified treatment of this clarifier 41, by this outlet passageway 42, is discharged by this gas outlet 43.
As preferred embodiment, this gas outlet 43 is corresponding with this air inlet 21 of this inlet duct 2, the cleaned air of being discharged by this gas outlet 43 like this can drive oil smoke to enter into this inlet duct 2, thus the oil smoke flow velocity added in this inlet duct 2 and improve oil smoke be inhaled into rate.
This clarifier 41 comprises fume purifying layer.In order to sufficient purifying oil fume, this fume purifying layer comprises milipore filter purifying layer, active carbon purifying layer, titanium dioxide purifying layer and ultraviolet lamp tube, wherein this milipore filter purifying layer is mainly used in filtering grease and smoke particle, this active carbon purifying layer is mainly used in removing peculiar smell, and titanium dioxide purifying layer and ultraviolet lamp tube are mainly used in sterilizing.Be worth reminding, according to actual service condition, this fume purifying layer can be the one or more combination of above-mentioned purifying layer, or other can play the material of similar effect.
In order to alleviate the purification pressure of this clarifier 41, extend the service life of this clarifier 41, air inlet oil cleaner screen 23 is mounted with at this air inlet 21 of this inlet duct 2, such oil smoke is before entering this inlet channel 22, first filter through this air inlet oil cleaner screen 23, to remove amount of grease in oil smoke and smoke particle.
This integrated kitchen range also comprises oil guide pipe 5 and oil box 6, and wherein this air intake and exhaust system 3 has oil guiding hole 35 bottom it, and this oil guide pipe 5 is connected with this oil guiding hole 35, and oil, by this oil guiding hole 35, through this oil guide pipe 5, flows in this oil box 6, cleans to facilitate personnel.
According to actual conditions demand, this integrated kitchen range can also comprise other cooking apparatus such as disinfection cabinet, locker be placed in this housing, to save space, expense and manual operation program.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that the ordinary skill of this area just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technical staff in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (8)
1. an air intake and exhaust system, comprise the fan house with air entry and exhaust outlet, be placed in the blower fan in this fan house, and be placed in the neck ring at this air entry place, wherein, this blower fan has two blower fan mouths, corresponding with this neck ring in these two blower fan mouths is the first blower fan mouth, what be connected with this exhaust outlet is the second blower fan mouth, it is characterized in that: also comprise the guide shell that is positioned at this neck ring periphery, and the bottom of this guide shell and this first blower fan mouth close.
2. an integrated kitchen range, comprises housing, is positioned at the inlet duct of this housing, air intake and exhaust system, and air-out apparatus, wherein, and the inlet channel that this inlet duct comprises air inlet and is connected with this air inlet; This air intake and exhaust system comprises the fan house with air entry and exhaust outlet, be placed in the blower fan in this fan house, and be placed in the neck ring at this air entry place, this air entry is connected with this inlet channel, this blower fan has two blower fan mouths, corresponding with this neck ring in these two blower fan mouths is the first blower fan mouth, and what be connected with this exhaust outlet is the second blower fan mouth; This air-out apparatus comprises the clarifier be connected with this exhaust outlet, the outlet passageway be connected with this clarifier, and the gas outlet to be connected with this outlet passageway, it is characterized in that: this air intake and exhaust system also comprises the guide shell being positioned at this neck ring periphery, the bottom of this guide shell and this first blower fan mouth close.
3. integrated kitchen range as claimed in claim 2, it is characterized in that: this blower fan comprises a motor, two spiral cases, two cigarette grooves and two wind wheels, wherein, this two cigarettes groove is respectively to should the first blower fan mouth and this second blower fan mouth, and its air intake direction is contrary each other, this motor is clipped between this two spiral case with core motor for two shaft, and this two wind wheel is placed in two shaft two ends of this motor respectively.
4. integrated kitchen range as claimed in claim 2, it is characterized in that: this blower fan comprises a motor, a spiral case, two cigarette grooves and two wind wheels, wherein, this two cigarettes groove is respectively to should the first blower fan mouth and this second blower fan mouth, and its air intake direction is contrary each other, set up division board spiral case to be separated into two cigarette grooves independently in the centre of this spiral case, this motor is fixed on this division board with core motor for two shaft.
5. integrated kitchen range as claimed in claim 3, it is characterized in that: this clarifier comprises fume purifying layer, this fume purifying layer is following one or more combination: milipore filter purifying layer, active carbon purifying layer, titanium dioxide purifying layer and ultraviolet lamp tube.
6. integrated kitchen range as claimed in claim 2, is characterized in that: this blower fan by two independently little blower fan combine, these two little blower fans respectively have a blower fan mouth, are respectively this first blower fan mouth and this second blower fan mouth.
7. the integrated kitchen range as described in claim arbitrary in claim 2 to 6, is characterized in that: this gas outlet is corresponding with this air inlet of this inlet duct.
8. integrated kitchen range as claimed in claim 7, is characterized in that: be mounted with air inlet oil cleaner screen at this air inlet of this inlet duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502063.8A CN102937302B (en) | 2012-11-30 | 2012-11-30 | Air intake and exhaust system and adopt the integrated kitchen range of this device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210502063.8A CN102937302B (en) | 2012-11-30 | 2012-11-30 | Air intake and exhaust system and adopt the integrated kitchen range of this device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102937302A CN102937302A (en) | 2013-02-20 |
| CN102937302B true CN102937302B (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210502063.8A Active CN102937302B (en) | 2012-11-30 | 2012-11-30 | Air intake and exhaust system and adopt the integrated kitchen range of this device |
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| CN (1) | CN102937302B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202947191U (en) * | 2012-11-30 | 2013-05-22 | 何维斌 | Air sucking and exhausting device and integrated cooker adopting same |
| CN104235909A (en) * | 2013-06-07 | 2014-12-24 | 傅仁火 | Air purification device for integrated cooker |
| CN103353134B (en) * | 2013-07-31 | 2016-03-23 | 上海多环油烟净化设备有限公司 | Water cooled circulating integrated kitchen range |
| CN103398404A (en) * | 2013-07-31 | 2013-11-20 | 上海多环油烟净化设备有限公司 | Double-air-duct circulating environment-friendly integrated cooker |
| CN103398405B (en) * | 2013-07-31 | 2016-01-20 | 上海多环油烟净化设备有限公司 | Double-standard Inner eycle clearing machine |
| CN105444236B (en) * | 2015-12-31 | 2017-09-22 | 青海天地乐科技有限责任公司 | Integrated kitchen range ventilator |
| CN106175122B (en) * | 2016-08-31 | 2018-09-14 | 苏州韩博厨房电器科技有限公司 | With the chafing dinning table device with lift vegetable dish in function of fuel gas purification and pot |
| CN107166465A (en) * | 2017-07-05 | 2017-09-15 | 中山市亲乐厨具有限公司 | A kind of suction air exhaust passage of integrated kitchen range |
| CN107152708A (en) * | 2017-07-05 | 2017-09-12 | 中山市亲乐厨具有限公司 | A kind of oil collecting system of integrated kitchen range |
| CN108240666B (en) * | 2017-11-19 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3260189A (en) * | 1963-10-29 | 1966-07-12 | Donald D Jensen | Ventilation system |
| JP2002228222A (en) * | 2001-02-01 | 2002-08-14 | Yamazen:Kk | Range hood |
| CN101012945A (en) * | 2006-10-16 | 2007-08-08 | 何维斌 | Sanitary fireproof smoke purifier used for restaurant industry and family kitchen |
| CN202328454U (en) * | 2011-11-24 | 2012-07-11 | 上海多环油烟净化设备有限公司 | Nano titanium dioxide photocatalyst air curtain range hood |
| CN202947191U (en) * | 2012-11-30 | 2013-05-22 | 何维斌 | Air sucking and exhausting device and integrated cooker adopting same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060150965A1 (en) * | 2005-01-13 | 2006-07-13 | Samsung Electronics Co., Ltd. | Exhausting and cooling system for cooking utensil |
-
2012
- 2012-11-30 CN CN201210502063.8A patent/CN102937302B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3260189A (en) * | 1963-10-29 | 1966-07-12 | Donald D Jensen | Ventilation system |
| JP2002228222A (en) * | 2001-02-01 | 2002-08-14 | Yamazen:Kk | Range hood |
| CN101012945A (en) * | 2006-10-16 | 2007-08-08 | 何维斌 | Sanitary fireproof smoke purifier used for restaurant industry and family kitchen |
| CN202328454U (en) * | 2011-11-24 | 2012-07-11 | 上海多环油烟净化设备有限公司 | Nano titanium dioxide photocatalyst air curtain range hood |
| CN202947191U (en) * | 2012-11-30 | 2013-05-22 | 何维斌 | Air sucking and exhausting device and integrated cooker adopting same |
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| CN102937302A (en) | 2013-02-20 |
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Effective date of registration: 20180626 Address after: No. 1188 Hu Yi highway, Jiading District, Shanghai City, Shanghai Patentee after: SHANGHAI DUOHUAN LAMPBLACK CLEANING EQUIPMENT Co.,Ltd. Address before: 473031 Room 401, unit 3, building 11, Daqing District, Wanzhuang Town, Wancheng District, Nanyang, Henan, China Patentee before: He Weibin |
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Application publication date: 20130220 Assignee: Henan Ding Yi Electrical Technology Development Co.,Ltd. Assignor: SHANGHAI DUOHUAN LAMPBLACK CLEANING EQUIPMENT Co.,Ltd. Contract record no.: 2018990000278 Denomination of invention: Air sucking and exhausting device as well as integrated stove using same Granted publication date: 20150909 License type: Exclusive License Record date: 20181024 |
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Assignee: Henan Ding Yi Electrical Technology Development Co.,Ltd. Assignor: SHANGHAI DUOHUAN LAMPBLACK CLEANING EQUIPMENT Co.,Ltd. Contract record no.: 2018990000278 Date of cancellation: 20220822 |
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