CN110274280B - Range hood with parallel fans - Google Patents
Range hood with parallel fans Download PDFInfo
- Publication number
- CN110274280B CN110274280B CN201810218156.5A CN201810218156A CN110274280B CN 110274280 B CN110274280 B CN 110274280B CN 201810218156 A CN201810218156 A CN 201810218156A CN 110274280 B CN110274280 B CN 110274280B
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- China
- Prior art keywords
- air outlet
- fan
- movable
- fan air
- movable baffle
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- 239000012530 fluid Substances 0.000 abstract description 3
- 238000010411 cooking Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000000391 smoking effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- F24C15/2021—Arrangement or mounting of control or safety systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A range hood with parallel fans comprises a shell, wherein a left fan and a right fan which are mutually connected in parallel are arranged in the shell, an air outlet cover is arranged on the shell, a left fan air outlet and a right fan air outlet are both communicated with the air outlet cover, a movable baffle is arranged in the air outlet cover, the movable baffle can deflect left and right under the driving of a first driving mechanism to close the left fan air outlet or the right fan air outlet, a movable cover plate is arranged on the shell, and the movable cover plate can close the left fan air inlet or the right fan air inlet under the driving of a second driving mechanism. When the left fan and the right fan of the range hood are started, the movable baffle is arranged at the vertical position, so that the air flow at the air outlet of the left fan and the air flow at the air outlet of the right fan are mutually independent and do not interfere with each other, the collision of two fluids is effectively reduced, vortex is eliminated, pneumatic noise is reduced, when the fan at one side is started, the volume of the inner cavity of the fan at the starting side is increased through the deflection of the movable baffle, and therefore the air flow speed and the pneumatic noise are reduced.
Description
Technical Field
The invention relates to a range hood, in particular to a range hood with a parallel fan.
Background
The range heads of common household kitchen ranges are generally divided into left and right parts, and the range hood on the market at present generally only comprises one fan, so that the range hood effect is required to be improved. Aiming at the defects of the single-fan range hood, the range hood adopting the parallel fans is invented, and the two fans are in one-to-one correspondence with the two kitchen ranges heads, so that the smoking effect can be greatly improved, and the range hood is popular in the consumer market, however, because airflows discharged from air outlets of the two parallel fans are all discharged into the same air outlet cover, when the fans at two sides are started simultaneously, airflows at two sides can collide and interfere with each other, thereby enhancing pneumatic noise, especially when the fan at one side is started in a high grade and the fan at the other side is started in a low grade, vortex flow is generated in the air outlet cover due to unequal flow rates of the two airflows, and the pneumatic noise is more serious. In addition, in the cooking process, users sometimes use two sides at the same time, sometimes only one side of the stove head is used, and if the users only use one side of the stove head to cook dishes, and turn on the fan on the same side, the oil smoke can flow back from the other side, so that smoking effect and cooking experience are affected. In summary, the structure of the existing range hood with parallel fans needs to be improved.
Disclosure of Invention
Aiming at the current state of the art, the invention provides the range hood with the parallel fan, which has simple structure and good noise reduction effect.
The technical scheme adopted for solving the technical problems is as follows: this range hood with parallelly connected fan, including the shell, install left fan and the right fan of mutual parallelly connected in the shell install the air-out cover on the shell, left fan air outlet and right fan air outlet all with the air-out cover is linked together, its characterized in that: the movable baffle is arranged in the air outlet cover, the movable baffle can deflect left and right under the drive of the first driving mechanism to close the left fan air outlet or the right fan air outlet, the movable cover plate is arranged on the shell, and the movable cover plate can close the left fan air inlet or the right fan air inlet under the drive of the second driving mechanism.
The movable baffle can have various mounting structures, preferably, the movable baffle is vertically arranged in the middle of the air outlet cover in an undeflected initial state, the first driving mechanism is a first motor arranged on the air outlet cover, and an output shaft of the first motor is horizontally arranged and connected to the movable baffle. Therefore, the first motor can smoothly drive the movable baffle to deflect left and right so as to close the air outlet of the left fan or the air outlet of the right fan.
In order to improve the noise reduction effect, the movable baffle is provided with noise reduction holes.
In order to further improve the noise reduction effect, the noise reduction holes are through holes which are distributed on the whole movable baffle. Therefore, the Helmholtz resonance principle can be utilized to reduce noise, and the noise reduction effect is better.
The movable cover plate can have various mounting structures, preferably, the second driving mechanism is a second motor mounted on the shell, the output shaft of the second motor is provided with a swinging rod, the swinging rod swings left and right under the driving of the second motor, and the movable cover plate is mounted at the lower end of the swinging rod.
Further preferably, the movable cover plate is circular, and the lower end of the swing rod is arranged at the center of the movable cover plate.
In order to enable the movable cover plate to smoothly close the left fan air inlet and the right fan air inlet, the end face of the left fan air inlet is flush with the end face of the right fan air inlet.
In order to realize the linkage of the movable baffle and the movable cover plate, the movable baffle further comprises a controller for controlling the first driving mechanism and the second driving mechanism to be in linkage.
Further preferably, the movable baffle and the movable cover plate can synchronously move towards the same side under the control of the controller, and when the movable baffle closes the left fan air outlet, the movable cover plate closes the left fan air inlet, and when the movable baffle closes the right fan air outlet, the movable cover plate closes the right fan air inlet. Like this, when movable baffle closed left fan air outlet and movable cover plate closed left fan air intake, the inside helmholtz resonant cavity that forms of right fan to further reduce the noise of left fan during operation, on the contrary, the inside helmholtz resonant cavity that forms of left fan, thereby further reduce the noise of right fan during operation.
As the preferable mode of any one of the above schemes, the area of the movable cover plate is larger than or equal to the area of the left fan air inlet and the right fan air inlet.
Compared with the prior art, the invention has the advantages that: the movable baffle of the range hood with the parallel fans can deflect left and right under the drive of the first driving mechanism to close the air outlet of the left fan or the air outlet of the right fan, the movable cover plate can close the air inlet of the left fan or the air inlet of the right fan under the drive of the second driving mechanism, when the left fan and the right fan are started, the movable baffle is in the vertical position, so that the air flow of the air outlet of the left fan and the air flow of the air outlet of the right fan are mutually independent and are not interfered with each other, the collision of two fluids is effectively reduced, vortex is eliminated, the pneumatic noise is reduced, when the fan on one side is started, the volume of the inner cavity of the fan on the starting side is enlarged through the deflection of the movable baffle, the air flow speed and the pneumatic noise are reduced, and the air inlet of the fan which is not started is closed through the cooperation of the movable cover plate, so that the noise reduction effect is further improved.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of an internal structure of an air outlet cover according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the structure of the embodiment of the present invention when both the left and right fans are activated;
fig. 4 is a schematic structural diagram of the embodiment of the present invention when only the left fan is started.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1 to 4, the range hood with parallel fans in this embodiment includes a housing 1, a left fan 2 and a right fan 3 connected in parallel are installed in the housing 1, an air outlet cover 4 is installed on the housing 1, a left fan air outlet 22 and a right fan air outlet 32 are both communicated with the air outlet cover 4, a movable baffle 5 is installed in the air outlet cover 4, the movable baffle 5 can deflect left and right under the driving of a first driving mechanism to close the left fan air outlet 22 or the right fan air outlet 32, a movable cover plate 6 is installed on the housing 1, and the movable cover plate 6 can close the left fan air inlet 21 or the right fan air inlet 31 under the driving of a second driving mechanism.
The first driving mechanism is a first motor 7 installed on the air outlet cover 4, an output shaft of the first motor 7 is horizontally arranged and connected to the movable baffle 5, the movable baffle 5 is vertically arranged in the middle of the air outlet cover 4 in an undeflected initial state, and the movable baffle 5 can deflect left and right under the driving of the first motor 7. In addition, the movable baffle 5 is provided with noise reduction holes 51, and the noise reduction holes 51 are through holes and are distributed on the whole movable baffle 5.
The second driving mechanism is a second motor 8 arranged on the shell 1, a swing rod 9 is arranged on an output shaft of the second motor 8, and the swing rod 9 swings left and right under the driving of the second motor 8. In this embodiment, the movable cover plate 6 is circular, and the lower end of the swing rod 9 is mounted at the center of the movable cover plate 6.
In addition, in order that the movable cover plate 6 can normally close the air inlet of the fan, the area of the movable cover plate 6 is larger than or equal to the areas of the left fan air inlet 21 and the right fan air inlet 31, and the end face of the left fan air inlet 21 is flush with the end face of the right fan air inlet 31.
In this embodiment, the first motor 7 and the second motor 8 can be linked under the control of a controller (not shown), so that the flapper 5 and the flapper 6 can move synchronously to the same side. For example, the movable cover 6 may close the left air inlet 21 while the movable cover 5 closes the left air outlet 22, and the movable cover 6 may close the right air inlet 31 while the movable cover 5 closes the right air outlet 32.
The operating principle of the range hood is as follows:
when cooking is performed on left and right sides of a kitchen range, the left fan 2 and the right fan 3 of the range hood are started, the movable baffle 5 is vertically arranged in the middle of the air outlet cover 4, the movable baffle 5 divides the air outlet cover 4 into two independent chambers, namely a left chamber 41 and a right chamber 42, the movable cover 6 is positioned at the middle position between the left fan air inlet 21 and the right fan air inlet 31, left air flows through the left chamber 41 of the air outlet cover 4 to be discharged, right air flows through the right chamber 42 of the air outlet cover 4 to be discharged, and air flows of the left chamber 41 and the right chamber 42 are mutually independent and do not interfere with each other, so that collision of two air flows is effectively reduced, vortex is eliminated, and pneumatic noise is reduced.
When the cooker is used for cooking on the left side only, the left fan 2 is started, the right fan 3 is not started, the movable baffle 5 deflects to the right side and closes the right fan air outlet 32, air of the left fan 2 is discharged from the left cavity 41 of the air outlet cover 4, the left side volume is increased due to the deflection of the movable baffle 5 to the right side, the outlet area is increased, the outlet cross section area is increased, the fluid speed is reduced, the dynamic pressure is reduced, the pneumatic noise is reduced, and in addition, the dynamic pressure is reduced on the premise that the total pressure of air is fixed according to the Bernoulli principle, so that the static pressure can be increased. In addition, when cooking on the left side of the kitchen range, the movable baffle plate 5 can also deflect rightwards completely to close the right fan air outlet 32, meanwhile, the movable cover plate 6 swings rightwards to close the right fan air inlet 31, at the moment, a sealed cavity is formed inside the right fan 3, and as the noise reduction hole 51 is formed in the movable baffle plate 5, a Helmholtz resonant cavity is formed inside the right fan 3, and according to the Helmholtz resonance noise reduction principle, the noise generated when the left fan 2 works can be further reduced.
The principle of operation of the hob when cooking on the right side only is the same as when cooking on the left side only, and will not be described here.
Claims (7)
1. The utility model provides a range hood with parallelly connected fan, includes shell (1), install left fan (2) and right fan (3) parallelly connected each other in shell (1) install air-out cover (4) on shell (1), left fan air outlet (22) and right fan air outlet (32) all with air-out cover (4) are linked together, its characterized in that: the novel air conditioner is characterized in that a movable baffle (5) is arranged in the air outlet cover (4), the movable baffle (5) can deflect left and right under the driving of a first driving mechanism to close a left fan air outlet (22) or a right fan air outlet (32), a movable cover plate (6) is arranged on the shell (1), the movable cover plate (6) can close a left fan air inlet (21) or a right fan air inlet (31) under the driving of a second driving mechanism, the movable baffle (5) is vertically arranged in the middle of the air outlet cover (4) under the initial state of non-deflection, the first driving mechanism is a first motor (7) arranged on the air outlet cover (4), an output shaft of the first motor (7) is horizontally arranged and connected to the movable baffle (5), a noise reduction hole (51) is formed in the movable baffle plate (5), a second motor (8) arranged on the shell (1), a second driving mechanism is arranged on an output shaft of the second motor (8), and the motor (9) is arranged at the left swing end of the swing rod (6) under the driving of the swing rod.
2. The range hood with parallel fans of claim 1, wherein: the noise reduction holes (51) are through holes which are distributed on the whole movable baffle plate (5).
3. The range hood with parallel fans of claim 1, wherein: the movable cover plate (6) is circular, and the lower end of the swing rod (9) is arranged at the center of the movable cover plate (6).
4. The range hood with parallel fans of claim 1, wherein: the end face of the left fan air inlet (21) is flush with the end face of the right fan air inlet (31).
5. The range hood with parallel fans of claim 1, wherein: the device also comprises a controller for controlling the first driving mechanism and the second driving mechanism to be linked.
6. The range hood with parallel fans of claim 5, wherein: the movable baffle (5) and the movable cover plate (6) can synchronously move towards the same side under the control of the controller, and when the movable baffle (5) closes the left fan air outlet (22), the movable cover plate (6) closes the left fan air inlet (21), and when the movable baffle (5) closes the right fan air outlet (32), the movable cover plate (6) closes the right fan air inlet (31).
7. The range hood with parallel fans of any one of claims 1 to 6, characterized in that: the area of the movable cover plate (6) is larger than or equal to the areas of the left fan air inlet (21) and the right fan air inlet (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218156.5A CN110274280B (en) | 2018-03-16 | 2018-03-16 | Range hood with parallel fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810218156.5A CN110274280B (en) | 2018-03-16 | 2018-03-16 | Range hood with parallel fans |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110274280A CN110274280A (en) | 2019-09-24 |
| CN110274280B true CN110274280B (en) | 2024-02-20 |
Family
ID=67958937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810218156.5A Active CN110274280B (en) | 2018-03-16 | 2018-03-16 | Range hood with parallel fans |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110274280B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253495A (en) * | 2020-09-11 | 2021-01-22 | 宁波方太厨具有限公司 | Fan system and range hood with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW462476U (en) * | 1999-11-25 | 2001-11-01 | Li Ying Hua | Improved structure for electrostatic kitchen hood |
| CN101042247A (en) * | 2007-04-29 | 2007-09-26 | 中国科学技术大学 | Whirl entraining type cooking fume exhauster |
| CN105091057A (en) * | 2015-09-08 | 2015-11-25 | 广东美的厨房电器制造有限公司 | Smoke exhaust ventilator |
| CN205026771U (en) * | 2015-09-08 | 2016-02-10 | 广东美的厨房电器制造有限公司 | A volute component for range hood |
| CN205878293U (en) * | 2016-08-09 | 2017-01-11 | 广东美的厨房电器制造有限公司 | Range hood |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060084374A1 (en) * | 2004-10-14 | 2006-04-20 | International Business Machines Corporation | Method and apparatus for a low impedance anti-recirculation air moving inlet device |
-
2018
- 2018-03-16 CN CN201810218156.5A patent/CN110274280B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW462476U (en) * | 1999-11-25 | 2001-11-01 | Li Ying Hua | Improved structure for electrostatic kitchen hood |
| CN101042247A (en) * | 2007-04-29 | 2007-09-26 | 中国科学技术大学 | Whirl entraining type cooking fume exhauster |
| CN105091057A (en) * | 2015-09-08 | 2015-11-25 | 广东美的厨房电器制造有限公司 | Smoke exhaust ventilator |
| CN205026771U (en) * | 2015-09-08 | 2016-02-10 | 广东美的厨房电器制造有限公司 | A volute component for range hood |
| CN205878293U (en) * | 2016-08-09 | 2017-01-11 | 广东美的厨房电器制造有限公司 | Range hood |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110274280A (en) | 2019-09-24 |
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