CN106642249B - A kind of concatenated range hood of two fans - Google Patents
A kind of concatenated range hood of two fans Download PDFInfo
- Publication number
- CN106642249B CN106642249B CN201611094660.6A CN201611094660A CN106642249B CN 106642249 B CN106642249 B CN 106642249B CN 201611094660 A CN201611094660 A CN 201611094660A CN 106642249 B CN106642249 B CN 106642249B
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- Prior art keywords
- blower
- fan shroud
- air inlet
- fans
- disk
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a kind of concatenated range hoods of two fans, including exhaust fume collecting hood, fan shroud and the first blower being arranged in fan shroud, air inlet is offered on exhaust fume collecting hood, it is characterized by: fan shroud is interior, the position above air inlet is provided with the second blower, second blower is centrifugal blower, the air inlet mouth down of second blower is formed between first passage, the second blower periphery and the fan shroud passed through for cooking fume stream among the second blower and is formed with the second channel passed through for cooking fume stream.By the way that air inlet blower directed downwardly is arranged in fan shroud, the concatenated range hood of two fans is constituted, can to form the strong negative pressure extended downwardly in the middle part of the blower, to have very strong suction gather effect to underface oil smoke air-flow；And the rotary motion of the impeller of blower is transmitted by the viscous shear or turbulent shear force of fluid itself, so that the air-flow of the certain elongated area of impeller internal and lower section forms whirlpool, further promotes cigarette smoking ability.
Description
Technical field
The present invention relates to a kind of range hood, especially a kind of concatenated range hood of two fans.
Background technique
Range hood has become one of machine for kitchen use equipment indispensable in Modern Family.Range hood is in use state
Under air draft flow depend primarily on the wind pressure of cooking-fume exhauster blower system, wind pressure is bigger, and air draft flow is also bigger.Normal domestic use
Range hood when in use, oil smoke needs that oil smoke is discharged by resistance devices such as smoke exhaust pipe, check (non-return) valve and discharge flues, this
The presence of a little resistance devices so that oil smoke at oil smoke outlet there are certain back pressure, the presence of back pressure can largely effect on oil
The air draft flow of smoke machine.The wind pressure of blower fan system has a positive effect to the air draft flow of range hood, and the presence of back pressure is then to suction
The air draft flow of kitchen ventilator plays negative consequence.
Usual range hood includes top suction type and side-suction type, and the range hood of top suction type is due to clean and tidy light and handy, occupancy sky
Between it is small the advantages that, and it is in an increasingly wide range of applications.Top-sucking kitchen ventilator generally includes exhaust fume collecting hood, on exhaust fume collecting hood
Blower housing is equipped with spiral case, impeller and the motor for driving impeller in blower housing.Blower can be used it is vertical or horizontal, crouch
Formula if the applicant is application No. is a kind of top-sucking kitchen ventilator disclosed in 201620102990.4 Chinese patents, include
Blower hood is equipped with blower in blower hood, it is characterised in that: assembling chamber and whole is divided into inside blower hood
Chamber is flowed, rectifying cavity is located at the lower section of the assembling chamber, and blower uses three-dimensional flow impeller, and assembling is in assembling chamber
Interior, the air inlet mouth down of blower is simultaneously connected with the rectifying cavity.
Find that Horizontal fan is obvious to the function and effect of lower section air-flow in no back pressure according to experiment and analysis, it can
To promote the accounting of kitchen ventilator sucking Oil in circulating gas cigarette, so that the oil smoke for promoting kitchen ventilator absorbs efficiency.But Horizontal fan system
The ability that system resists back pressure is weaker, in the case where there is back pressure, is easy to produce reflux.
Summary of the invention
The technical problem to be solved by the present invention is in view of the above-mentioned problems of the prior art, provide it is a kind of promoted hold together cigarette
The concatenated range hood of the two fans of ability.
The technical scheme of the invention to solve the technical problem is: a kind of concatenated range hood of two fans, packet
Exhaust fume collecting hood, fan shroud and the first blower being arranged in the fan shroud are included, offers air inlet on the exhaust fume collecting hood, it is special
Sign is: the fan shroud is interior, the position above air inlet is provided with the second blower, and second blower is centrifugation wind
Machine, the air inlet mouth down of second blower are formed with the first passage passed through for cooking fume stream, institute among second blower
It states and is formed with the second channel passed through for cooking fume stream between the second blower periphery and fan shroud.
Preferably, second blower includes disk of conical profile, and the axial direction of the disk of conical profile is vertical direction, the taper
The radial dimension of impeller is gradually reduced from the bottom to top.
For driving impeller rotation, second blower further includes the motor for driving the disk of conical profile rotation, described
The wheel disc of hollow out is provided in disk of conical profile, the output shaft of the motor is connected to the wheel disc, and the motor passes through motor branch
Frame is fixed in fan shroud.
Since motor can cause certain Airflow obstruction, to have some impact on to the air quantity of first passage while also can
Increase noise and is therefore provided with diversion component, the diversion component small big taper under being in the disk of conical profile.
To make smooth channel of the oil smoke air-flow inside fan shroud, while overcoming back pressure, the air inlet of first blower
Mouth is in 0 °~90 ° relative to vertical direction.
Compared with the prior art, the advantages of the present invention are as follows: by the way that air inlet blower directed downwardly, structure are arranged in fan shroud
The range hood of fans in series in pairs can to form the strong negative pressure extended downwardly in the middle part of the blower, thus to underface oil
Flue gas stream has very strong suction gather effect；And blower is transmitted by the viscous shear or turbulent shear force of fluid itself
Impeller rotary motion so that the certain elongated area of impeller internal and lower section air-flow formed whirlpool, further promoted hold together cigarette
Smoking ability.
Detailed description of the invention
Fig. 1 is the schematic diagram of range hood one embodiment of the invention；
Fig. 2 is the schematic diagram of the range hood hidden parts cabinet of Fig. 1；
Fig. 3 is the impeller side view of the second blower of the range hood of Fig. 1；
Fig. 4 is the schematic diagram of second embodiment hidden parts cabinet of range hood of the invention；
Fig. 5 is the schematic diagram of the second blower of range hood third embodiment of the invention；
Fig. 6 is the decomposition texture schematic diagram of the second blower of Fig. 5.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment one
Referring to FIG. 1 to FIG. 3, a kind of concatenated range hood of two fans, including exhaust fume collecting hood 1, fan shroud 2,3 and of the first blower
Second blower 4.Air inlet is offered on exhaust fume collecting hood 1, air inlet is provided with strainer 5, and the first blower 3 is arranged in fan shroud 2,
Second blower 4 is arranged above strainer 5 and is located in fan shroud 2, and the first blower 3 is located at 4 top of the second blower.By this
The concatenated mode of two fans of first blower 3 and the second blower 4, makes up the deficiency of Horizontal fan, and strengthens the excellent of Horizontal fan
Gesture.It is provided with outlet housing 6 at the air outlet of first blower 3, for the oil smoke of range hood to be discharged.
First blower 3 is centrifugal blower, can use existing structure, and the second blower 4 is a kind of centrifugation wind of no spiral case
Machine, including disk of conical profile 41 and driving disk of conical profile 41 rotate motor 42, the radial dimension of disk of conical profile 41 from the bottom to top by
Decrescence small, motor 42 is fixed in fan shroud 2 by electric machine support 43, and the wheel disc 44 of hollow out, motor 42 are provided in impeller 41
Output shaft connect with wheel disc 44 to motor 42 can drive disk of conical profile 41 rotate.The axial direction of disk of conical profile 41 is vertical side
To.
The oil smoke air-flow sucked below exhaust fume collecting hood 1 after flowing through the second blower 4, is inhaled into the first blower 3, and pass through
Outlet housing 6 is discharged to common flue.In order to enable the oil smoke air-flow for flowing through the second blower 4 smoothly enters the first blower 3,
First blower, 3 relatively horizontal orientation is vertical, i.e. the air inlet mouth down of the first blower 3, the air inlet mouth down of the second blower 4 and go out
Air port is vertically upward.This first blower 3 is in horizontal, the first blower 3 and the concatenated arrangement of the second blower 4, can make oil
Flue gas stream is flowing through the second blower 4, the first blower 3, and the path being then then exhausted from more lengthens, while the wind pressure ratio for two fans of connecting
Single blower has promotion, can preferably overcome back pressure.
Second blower 4 uses above-mentioned this disk of conical profile structure, and centrifugal action makes a part of oil of impeller internal
Flue gas stream diagonally flows out (the first passage P2 between 4 periphery of the second blower and fan shroud 2), referring in Fig. 3 shown in arrow A,
In addition, the first passage P1 among the second blower 4 flows out another part oil smoke air-flow, referring to shown in arrow B, two logical in Fig. 3
The flow that road passes through oil smoke air-flow is Q21, it is downward that " vacuum " is formed in addition the swabbing action of the first blower 3, in the middle part of the second blower 4
The strong negative pressuren zone Q of ductility, so that having very strong suction gather effect to 4 underface oil smoke air-flow of the second blower.And
The rotary motion of the second blower 4 is transmitted by the viscous shear or turbulent shear force of fluid itself so that impeller internal and
The cooking fume stream of the certain elongated area in lower section forms whirlpool, further promotes cigarette smoking ability.
It is radially flowed out after a part of oil smoke air-flow acting of the residue of second blower 4 sucking along impeller, referring to arrow C in Fig. 3
Shown, the flow of the part oil smoke air-flow is Q22, the flow Q of the oil smoke air-flow sucked by the first blower 31=Q21+Q22, Q22≤
Q1。
Embodiment two
Referring to fig. 4, in the present embodiment, with embodiment one the difference is that, the first blower 3 be it is tilting, i.e., relatively
Vertical direction is inclined.First blower 3 is 0 °~90 ° relative to the angle of vertical direction.
Embodiment three
Referring to figs. 5 and 6, in the present embodiment, with embodiment one the difference is that, be provided in disk of conical profile 41
Diversion component 45, the small big taper under being in of diversion component 45.Since motor 42 can cause certain Airflow obstruction, thus centering
Between the air quantity of first passage P1 have some impact on while also will increase noise, therefore, by setting diversion component 45 come certain
Reduce to degree influence.
Claims (4)
1. a kind of concatenated range hood of two fans, including exhaust fume collecting hood (1), fan shroud (2) and setting are in the fan shroud (2)
Interior the first blower (3) offers air inlet (11) on the exhaust fume collecting hood (1), it is characterised in that: in the fan shroud (2), position
Position above air inlet (11) is provided with the second blower (4), and second blower (4) is centrifugal blower, second wind
The air inlet mouth down of machine (4), second blower (4) include disk of conical profile (41), and the axial direction of the disk of conical profile (41) is perpendicular
Histogram is to the radial dimension of the disk of conical profile (41) is gradually reduced from the bottom to top, is formed with confession among second blower (4)
A part of cooking fume stream passes through and is formed between the first passage (P1), the second blower (4) periphery and the fan shroud (2) that flow out
There is the second channel (P2) for passing through for another part cooking fume stream and diagonally flowing out.
2. the concatenated range hood of two fans as described in claim 1, it is characterised in that: second blower (4) further includes
Motor (42) for driving the disk of conical profile (41) to rotate, the interior wheel disc for being provided with hollow out of the disk of conical profile (41)
(44), the output shaft of the motor (42) is connected to the wheel disc (44), and the motor (42) is fixed by electric machine support (43)
In fan shroud (2).
3. the concatenated range hood of two fans as claimed in claim 2, it is characterised in that: setting in the disk of conical profile (41)
Have diversion component (45), the diversion component (45) small big taper under being in.
4. the concatenated range hood of two fans according to any one of claims 1 to 3, it is characterised in that: first wind
The air inlet of machine (3) is in 0 °~90 ° relative to vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094660.6A CN106642249B (en) | 2016-12-02 | 2016-12-02 | A kind of concatenated range hood of two fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611094660.6A CN106642249B (en) | 2016-12-02 | 2016-12-02 | A kind of concatenated range hood of two fans |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106642249A CN106642249A (en) | 2017-05-10 |
| CN106642249B true CN106642249B (en) | 2019-09-20 |
Family
ID=58814746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611094660.6A Active CN106642249B (en) | 2016-12-02 | 2016-12-02 | A kind of concatenated range hood of two fans |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106642249B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109595649B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Near-suction type range hood |
| CN109595629B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Near-suction type range hood |
| CN109595627B (en) * | 2017-09-30 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN109780598B (en) * | 2017-11-10 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN109780595B (en) * | 2017-11-10 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
| CN109780591B (en) * | 2017-11-10 | 2024-01-16 | 宁波方太厨具有限公司 | Fume exhauster |
Citations (6)
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|---|---|---|---|---|
| EP1843100A2 (en) * | 2006-04-04 | 2007-10-10 | ABK InnoVent B.V. | Apparatus and method for exhausting smoke with air outlet connected to a central mechanical ventilation system |
| CN202177154U (en) * | 2011-06-28 | 2012-03-28 | 美的集团有限公司 | Smoke exhaust ventilator |
| CN102410570A (en) * | 2010-09-22 | 2012-04-11 | 王秀全 | Range hood or air-conditioner range hood |
| CN204388169U (en) * | 2014-12-18 | 2015-06-10 | 宁波方太厨具有限公司 | A kind of denoising device of range hood |
| CN106051866A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Draught fan capable of forming man-made tornado and extractor hood |
| CN206291267U (en) * | 2016-12-02 | 2017-06-30 | 宁波方太厨具有限公司 | A kind of range hood of two fans series connection |
-
2016
- 2016-12-02 CN CN201611094660.6A patent/CN106642249B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1843100A2 (en) * | 2006-04-04 | 2007-10-10 | ABK InnoVent B.V. | Apparatus and method for exhausting smoke with air outlet connected to a central mechanical ventilation system |
| CN102410570A (en) * | 2010-09-22 | 2012-04-11 | 王秀全 | Range hood or air-conditioner range hood |
| CN202177154U (en) * | 2011-06-28 | 2012-03-28 | 美的集团有限公司 | Smoke exhaust ventilator |
| CN204388169U (en) * | 2014-12-18 | 2015-06-10 | 宁波方太厨具有限公司 | A kind of denoising device of range hood |
| CN106051866A (en) * | 2016-07-22 | 2016-10-26 | 宁波方太厨具有限公司 | Draught fan capable of forming man-made tornado and extractor hood |
| CN206291267U (en) * | 2016-12-02 | 2017-06-30 | 宁波方太厨具有限公司 | A kind of range hood of two fans series connection |
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| Publication number | Publication date |
|---|---|
| CN106642249A (en) | 2017-05-10 |
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