CN203810499U - Serially-connecting double-air-blower structure for extractor hood - Google Patents
Serially-connecting double-air-blower structure for extractor hood Download PDFInfo
- Publication number
- CN203810499U CN203810499U CN201420143669.1U CN201420143669U CN203810499U CN 203810499 U CN203810499 U CN 203810499U CN 201420143669 U CN201420143669 U CN 201420143669U CN 203810499 U CN203810499 U CN 203810499U
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- China
- Prior art keywords
- blower fan
- blower
- air
- air inlet
- range hood
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000012530 fluid Substances 0.000 claims abstract description 4
- 238000010411 cooking Methods 0.000 abstract 1
- 239000000779 smoke Substances 0.000 description 22
- 239000006096 absorbing agent Substances 0.000 description 7
- 239000006233 lamp black Substances 0.000 description 7
- 239000003517 fume Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a serially-connecting double-air-blower structure for an extractor hood. The serially-connecting double-air-blower structure comprises a primary blower and a secondary blower, which are arranged in a blower enclosure, wherein an air outlet of the primary blower is in fluid communication of an air inlet of the secondary blower; the serially-connecting double-air-blower structure is characterized in that vertical projections of a shell of the primary blower and a shell of the secondary blower are partially overlapped, and the lower edge of the air inlet of the secondary blower is located above the overlapping area. The serially-connecting double-air-blower structure for the extractor hood has the advantages that as the vertical projections of the primary blower and the secondary blower, arranged in the blower enclosure, are partially overlapped, and the lower edge of the air inlet of the secondary blower is located above the overlapping area, the height difference between the primary blower and the secondary blower is low; therefore, the height of the blower enclosure is reduced as soon as possible under a condition that the exhausting flow rate of the blowers of the extractor hood is not influenced, and besides, after the extractor hood is installed, the blower enclosure cannot close to a cooking bench and is harmoniously and artistically matched with a cabinet as a whole.
Description
Technical field
The utility model relates to a kind of range hood, especially relates to the two blower fan structures of a kind of series connection for range hood.
Background technology
The air draft flow of range hood under use state depends primarily on the blast of cooking-fume exhauster blower system, and blast is larger, and air draft flow is also larger.The range hood of normal domestic use in use, oil smoke need to be discharged oil smoke by drag devices such as smoke exhaust pipe, check (non-return) valve and discharge flues, the existence of these drag devices, makes oil smoke have certain back pressure at oil smoke outlet place, and the existence of back pressure can affect the air draft flow of lampblack absorber greatly.The blast of blower fan system measures positive role to the discharge air flow of range hood, and the existence of back pressure measures negative consequence to the discharge air flow of range hood.
The harmful effect bringing in order to overcome as far as possible back pressure, people have designed the blower fan structure of a kind of pair of fans in series.If application number is that 201310248436.8(application publication number is CN103363563A) the disclosed < < of Chinese invention patent application lampblack absorber and control method > > thereof, this lampblack absorber comprises casing, casing below is provided with oil smoke import, casing top is provided with oil smoke outlet, in casing, being provided with air intake vent is communicated with oil smoke import, the blower fan system that air outlet is communicated with oil smoke exit passageway, this blower fan system includes the second centrifugal blower that the first centrifugal blower that air port is communicated with oil smoke import and air outlet are communicated with oil smoke outlet, and the connecting pipe by a bending between the air intake vent of the air outlet of the first centrifugal blower and the second centrifugal blower is connected.This lampblack absorber increases the blast of blower fan system by mating two centrifugal blowers, make blower fan system under use state, even if exist larger back pressure also can obtain larger air draft flow, and the rotating speed of two centrifugal blowers is without too high, noise is less, can meet the requirement of the efficient quiet suction of lampblack absorber.But, above-mentioned lampblack absorber is installed after two centrifugal blowers of connecting up and down in casing, will certainly increase the height of blower hood, and the height size of blower hood directly affects the overall appearance of range hood, thereby be necessary on the basis of this existing lampblack absorber, the installation site of two series connection centrifugal blowers to be further improved.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, and the two blower fan structures of the series connection for range hood that make the height of blower hood as far as possible reduce under a kind of prerequisite not affecting blower fan air draft flow are provided.
The utility model solves the problems of the technologies described above adopted technical scheme: should be for the series connection pair blower fan structures of range hood, comprise main blower fan and the secondary blower fan be located in blower hood, the air outlet of described main blower fan is communicated with the air inlet phase fluid of secondary blower fan, it is characterized in that: described main blower fan and secondary blower fan are overlapping in vertical projection, and under the air inlet of described secondary blower fan along the top that is positioned at described overlapping region.
Preferably, the altitude range of described main blower fan and secondary blower fan overlapping region in vertical projection is 0～30mm.In above-mentioned scope, the oil smoke flowing out from main frame fan outlet substantially can flow into smoothly secondary air inlet and can not intercepted.
Primary and secondary two-stage blower fan can have different position relationships, and preferably, described main blower fan and secondary blower fan vertically be arranged in parallel.
A kind of preferred version vertically be arrangeding in parallel as primary and secondary two-stage blower fan, the air outlet of described main blower fan is connected by wind-guiding tube connector with the air inlet of secondary blower fan.Primary and secondary two-stage blower fan adopts wind-guiding tube connector, can promote the flow field of blower fan and reduce fan noise.
The another kind of preferred version vertically be arrangeding in parallel as primary and secondary two-stage blower fan, is formed with the first closed chamber between the air outlet of described main blower fan and the air inlet of secondary blower fan.Like this, the oil smoke flowing out from main frame fan outlet can enter secondary air inlet substantially, and is unlikely to flee in blower hood.
Further preferably, described main blower fan and secondary blower fan oblique parallel arrange.
A kind of preferred version arranging as primary and secondary two-stage blower fan oblique parallel, the air outlet of described main blower fan is connected by wind-guiding tube connector with the air inlet of secondary blower fan.Primary and secondary two-stage blower fan adopts wind-guiding tube connector, can promote the flow field of blower fan and reduce fan noise.
The another kind of preferred version arranging as primary and secondary two-stage blower fan oblique parallel, described main blower fan and secondary blower fan dorsad separately a side of air inlet in blower hood, be formed with respectively the second closed chamber.By arranging in blower hood after the second closed chamber, the oil smoke flowing out from main frame fan outlet can enter secondary air inlet substantially, and is unlikely to flee in blower hood.
Compared with prior art, the utility model has the advantage of: because the main blower fan and the secondary blower fan that are arranged in blower hood overlap in vertical projection, and the lower edge of the air inlet of secondary blower fan is positioned at the top of described overlapping region, thereby the difference in height up and down of primary and secondary two-stage blower fan is unlikely to excessive, thereby range hood is not being affected under the prerequisite of blower fan air draft flow, the height of blower hood can shorten as far as possible, correspondingly, after range hood is installed, blower hood can be too near the kitchen range top and more harmonious, attractive in appearance with the integral matching of cabinet.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment mono-;
Fig. 2 is the structural representation of the utility model embodiment bis-;
Fig. 3 is the structural representation of the utility model embodiment tri-;
Fig. 4 is the structural representation of the utility model embodiment tetra-.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Embodiment mono-:
As shown in Figure 1, the two blower fan structures of series connection in the present embodiment comprise main blower fan 3 and secondary blower fan 4, and main blower fan 3 and secondary blower fan 4 are centrifugal blower and are arranged in blower hood 1, and main fan outlet 32 is communicated with secondary air inlet 41 phase fluids.In addition, main blower fan 3 and secondary blower fan 4 overlap in vertical projection, and 41 times edges of secondary air inlet are positioned at the top of described overlapping region.
According to the difference of primary and secondary two-stage blower fan structure, the height of the overlapping region of above-mentioned vertical projection can change, in the present embodiment, the scope of the height h of this overlapping region is 0～30mm, optimum is 10～20mm, because 41 times edges of secondary air inlet are positioned at the top of this overlapping region all the time, thereby the oil smoke flowing out from main fan outlet 32 can enter smoothly in secondary air inlet 41 and substantially can not intercepted.
In the present embodiment, main blower fan 3 and secondary blower fan 4 vertically be arranged in parallel blower hood 1 is interior, and main fan outlet 32 is connected by wind-guiding tube connector 5 with secondary air inlet 41.
During range hood work, direction shown in arrow be oil smoke flow to, under the effect of primary and secondary two-stage blower fan, first, oil smoke is inhaled in main blower fan 3 by main air inlet 31 after exhaust fume collecting hood 2 is collected, then, and by being inhaled into after wind-guiding tube connector 5 in secondary blower fan 4, finally, from secondary fan outlet 42, flow in the discharge pipe (not shown) of range hood.
Embodiment bis-:
As shown in Figure 2, the two blower fan structures of the series connection in the present embodiment form the first closed chamber 61 between main fan outlet 32 and secondary air inlet 41.In the present embodiment, remaining blower fan structure is identical with the blower fan structure in embodiment mono-, at this, does not launch to describe.
Range hood when work, direction shown in arrow be oil smoke flow to, the oil smoke flowing out from main fan outlet 32 directly enters in secondary blower fan 4 by this first closed chamber 61.Visible, after this first closed chamber 61 of the interior formation of blower hood 1, can avoid oil smoke to flee in blower hood 1, to promote the flow field of blower fan and to reduce fan noise as far as possible.
Embodiment tri-:
As shown in Figure 3, the main blower fan 3 of the two blower fan structures of series connection in the present embodiment and secondary blower fan 4 are in the interior oblique parallel setting of blower hood 1, and main fan outlet 32 is connected by wind-guiding tube connector 5 with secondary air inlet 41.The scope of the height h of main blower fan 3 and secondary blower fan 4 overlapping region in vertical projection is 0～30mm, and optimum is 10～20mm.The operation principle of the primary and secondary two-stage blower fan that employing wind-guiding tube connector 5 connects is identical with the blower fan structure of embodiment mono-, at this, does not launch to describe.
Embodiment tetra-:
As shown in Figure 4, the main blower fan 3 of the two blower fan structures of series connection in a present embodiment dorsad side of main air inlet 31 is formed with the second closed chamber 62 in blower hood 1, and a secondary blower fan 4 dorsad side of secondary air inlet 41 is formed with the second closed chamber 62 in blower hood 1.In the present embodiment, remaining blower fan structure is identical with the blower fan structure in embodiment tri-, at this, does not launch to describe.
During the work of range hood machine, direction shown in arrow be oil smoke flow to, first, oil smoke is inhaled in main blower fan 3 by main air inlet 31 after exhaust fume collecting hood 2 is collected, then, after entering blower hood 1, be inhaled in secondary blower fan 4, last, from secondary fan outlet 42, flow in the discharge pipe (not shown) of range hood.
Claims (8)
1. two blower fan structures of the series connection for range hood, comprise main blower fan (3) and the secondary blower fan (4) be located in blower hood (1), the air outlet of described main blower fan (3) is communicated with the air inlet phase fluid of secondary blower fan (4), it is characterized in that: described main blower fan (3) and secondary blower fan (4) are overlapping in vertical projection, and under the air inlet of described secondary blower fan (4) along the top that is positioned at described overlapping region.
2. the two blower fan structures of the series connection for range hood according to claim 1, is characterized in that: the altitude range of described main blower fan (3) and secondary blower fan (4) overlapping region in vertical projection is 0～30mm.
3. the two blower fan structures of the series connection for range hood according to claim 1 and 2, is characterized in that: described main blower fan (3) and secondary blower fan (4) vertically be arranged in parallel.
4. the two blower fan structures of the series connection for range hood according to claim 3, is characterized in that: the air outlet of described main blower fan (3) is connected by wind-guiding tube connector (5) with the air inlet of secondary blower fan (4).
5. the two blower fan structures of the series connection for range hood according to claim 3, is characterized in that: between the air outlet of described main blower fan (3) and the air inlet of secondary blower fan (4), be formed with the first closed chamber (61).
6. the two blower fan structures of the series connection for range hood according to claim 1 and 2, is characterized in that: described main blower fan (3) and secondary blower fan (4) oblique parallel setting.
7. the two blower fan structures of the series connection for range hood according to claim 6, is characterized in that: the air outlet of described main blower fan (3) is connected by wind-guiding tube connector (5) with the air inlet of secondary blower fan (4).
8. two blower fan structures of the series connection for range hood according to claim 6, is characterized in that: described main blower fan (3) and secondary blower fan (4) dorsad separately a side of air inlet in blower hood (1), be formed with respectively the second closed chamber (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143669.1U CN203810499U (en) | 2014-03-27 | 2014-03-27 | Serially-connecting double-air-blower structure for extractor hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143669.1U CN203810499U (en) | 2014-03-27 | 2014-03-27 | Serially-connecting double-air-blower structure for extractor hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810499U true CN203810499U (en) | 2014-09-03 |
Family
ID=51449241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420143669.1U Expired - Lifetime CN203810499U (en) | 2014-03-27 | 2014-03-27 | Serially-connecting double-air-blower structure for extractor hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203810499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949175A (en) * | 2014-03-27 | 2015-09-30 | 宁波方太厨具有限公司 | Tandem double-fan structure for extractor hood |
| CN105546613A (en) * | 2016-02-25 | 2016-05-04 | 宁波方太厨具有限公司 | Shunting device for extractor hood and cascaded fans applying shunting device |
| CN109990350A (en) * | 2017-12-30 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of double stage tandem denoising structure and its range hood |
-
2014
- 2014-03-27 CN CN201420143669.1U patent/CN203810499U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949175A (en) * | 2014-03-27 | 2015-09-30 | 宁波方太厨具有限公司 | Tandem double-fan structure for extractor hood |
| CN105546613A (en) * | 2016-02-25 | 2016-05-04 | 宁波方太厨具有限公司 | Shunting device for extractor hood and cascaded fans applying shunting device |
| CN109990350A (en) * | 2017-12-30 | 2019-07-09 | 宁波方太厨具有限公司 | A kind of double stage tandem denoising structure and its range hood |
| CN109990350B (en) * | 2017-12-30 | 2023-11-21 | 宁波方太厨具有限公司 | Double-stage series noise reduction structure and range hood thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |