CN2679405Y - Fan structure of cooker hood - Google Patents
Fan structure of cooker hood Download PDFInfo
- Publication number
- CN2679405Y CN2679405Y CN 200420020071 CN200420020071U CN2679405Y CN 2679405 Y CN2679405 Y CN 2679405Y CN 200420020071 CN200420020071 CN 200420020071 CN 200420020071 U CN200420020071 U CN 200420020071U CN 2679405 Y CN2679405 Y CN 2679405Y
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- CN
- China
- Prior art keywords
- circular arc
- fan
- fan cover
- base plate
- blower fan
- Prior art date
- 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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Abstract
The utility model relates to a fan structure of the cooker hood, comprising a fan cover, a fan seat, a circular fan ring connecting the fan cover and the fan seat by a continuous smooth curved surface and an air outlet fixing base. The inner edge of the fan cover is inclined inward corresponding to the edge of the air outlet fixing base. The fan cover and the fan seat are projected and not overlapped at the volute tongue position; the curvature radius of the fan cover and the fan seat are the same at the volute tongue position. The straight line formed by the orthographic projection of the fan seat and the straight line formed by the orthographic projection of the fan air outlet fixing base are smoothly connected by a circular arc with a radius of 30 mm. The circular arc BC extends inward and is close to the impeller, and as a result, the pressure of the air inlet of the utility model is increased to form a strong pressure expanding zone, and the air is quick to come in to increase the air flow in the working state. The circular arc FG is far from the impeller, and as a result, the wind pressure of the air outlet is relatively smaller, and the out air is relatively not so crowded, reducing the noise accordingly, and effectively solving the technical difficult problem of reducing the noise and increasing the air flow of the fan.
Description
(1) technical field
The utility model relates to a kind of blower fan structure of range hood.
(2) background technique
Range hood is a kind of requisite kitchen fitting of ordinary family, adopts the work of driven by motor blower fan.Blower fan in the market (by fan cover, base plate and be connected the two ring-shape blower fan circle) generally all adopts regular curve, make air intake and air-out state basically identical, caused air quantity to become ratio with noise, the big air-out of air intake is just crowded, noise is high naturally, has been difficult to satisfy the Consumer to the low noise requirement of big air quantity by its performance.
(3) summary of the invention
The utility model has solved the shortcoming that the big noise thereupon of existing range hood air quantity also increases, and provides a kind of and has improved air quantity and keep the blower fan structure of low noise range hood.
For this reason, the utility model is taked following technological scheme:
A kind of blower fan structure of range hood, the ring-shape blower fan circle, the exhaust outlet fixed base that include fan cover, base plate, described fan cover be connected with base plate with smooth curved surface continuously, the edge introversion of the relative exhaust outlet fixed base of described fan cover inward flange, described fan cover and base plate are not overlapping in the place's projection of snail tongue, and fan cover is the same in snail tongue place radius of curvature with base plate.
The relative exhaust outlet fixed base of described fan cover inward flange inward flange introversion 3-4 degree.
By oblique line, circular arc and straight line smooth transition, whole of exhaust outlet locates to keep same plane to described base plate to the exhaust outlet place.
Employing the utlity model has following advantage: 1, fan cover is designed to the circular arc inclined-plane, extend to the curve circular arc place of snail tongue always, make the curve circular arc BC and the FG front projection location dislocation of fan cover and base plate, but the circular curve radius is consistent, because fan cover curve circular arc BC extends internally near from impeller, so the pressure of intake grill increases during blower fan work, forms powerful diffusion district, descend air intake that air quantity is increased in working order; Base plate curve circular arc FG is outside circular arc BC, and away from impeller, blast is less relatively, and air-out was relatively not crowded in the past, thereby has reduced the noise of air-out, has reached the technique effect that noise does not rise when air quantity improves.2, base plate HY face is an inclined-plane, to exhaust outlet place and straight line XZ by the circular arc smooth transition, the guiding air-out is discharged along its inclined-plane, make air-out more smooth and easy, faster, make air-flow can't form eddy current in blower fan inside, reduce the noise that blower fan itself produces, thereby solved the technical barrier of blower fan noise reduction sound and raising air quantity better.
(4) description of drawings
Fig. 1 is an application state schematic representation of the present utility model
Fig. 2 is the right elevation of the utility model Fig. 1
(5) embodiment
Below in conjunction with accompanying drawing the utility model is described further:
A kind of blower fan structure of range hood, the ring-shape blower fan circle 3, the exhaust outlet fixed base 4 that include fan cover 1, base plate 2, described fan cover be connected with base plate with smooth curved surface continuously, the relative exhaust outlet fixed base of described fan cover inward flange edge introversion 3-4 degree, described fan cover and base plate are not overlapping in the place's projection of snail tongue, fan cover is the same in snail tongue place radius of curvature with base plate, is 14.3 millimeters.By oblique line, circular arc and straight line smooth transition, whole of exhaust outlet locates to keep same plane to described base plate to the exhaust outlet place.Described fan cover is formed by connecting with oblique line AB, circular arc BC and circular arc C D smooth transition, and the ratio of the radius of curvature of circular arc BC and circular arc C D is 14.3: 131.14; Described base plate is formed by connecting with straight line EF, circular arc FG and circular arc GD rounding off, the ratio of the radius of curvature of circular arc FG and circular arc GD is 14.3: 152.02, and the straight line of straight line that the base plate orthographic projection forms and exhaust outlet fixed base orthographic projection formation is 30 millimeters smooth connection of circular arc with radius.
In the blower fan structure of the present utility model, intake grill is near from impeller owing to circular arc BC extends internally, and the pressure of intake grill increases, and forms powerful diffusion district, descends air intake that air quantity is increased in working order; Exhaust outlet since circular arc FG away from impeller, blast is less relatively, air-out is so not crowded relatively, thereby has reduced noise; The inclination (angle of inclination is good with the 5-8 degree) of base plate HY face simultaneously, to exhaust outlet place and straight line XZ by the circular arc smooth transition, the guiding air-out makes air-flow can't form eddy current in blower fan, so reduced the noise of blower fan along its inclined-plane discharge.The performance that makes blower fan is that air quantity is at 16m
3More than/the min, and noise is controlled at below the 67db (A).
Claims (6)
1, a kind of blower fan structure of range hood, the ring-shape blower fan circle, the exhaust outlet fixed base that include fan cover, base plate, described fan cover be connected with base plate with smooth curved surface continuously, it is characterized in that: the edge introversion of the relative exhaust outlet fixed base of described fan cover inward flange, described fan cover and base plate are not overlapping in the place's projection of snail tongue, and fan cover is the same in snail tongue place radius of curvature with base plate.
2, the blower fan structure of range hood as claimed in claim 1 is characterized in that: the relative exhaust outlet fixed base of described fan cover inward flange inward flange introversion 3-4 degree.
3, the blower fan structure of range hood as claimed in claim 1 is characterized in that: by oblique line, circular arc and straight line smooth transition, whole of exhaust outlet locates to keep same plane to described base plate to the exhaust outlet place.
4, the blower fan structure of range hood as claimed in claim 1 is characterized in that: the snail tongue radius of the boundary curve of described fan cover and base plate is 14.3 millimeters.
5, as the blower fan structure of claim 1 or 2 or 3 or 4 described range hoods, it is characterized in that: described fan cover is formed by connecting with oblique line AB, circular arc BC and circular arc C D smooth transition, and the ratio of the radius of curvature of circular arc BC and circular arc C D is 14.3: 131.14; Described base plate is formed by connecting with straight line EF, circular arc FG and circular arc GD rounding off, and the ratio of the radius of curvature of circular arc FG and circular arc GD is 14.3: 152.02.
6, the blower fan structure of range hood as claimed in claim 5 is characterized in that: the straight line of straight line that the base plate orthographic projection forms and exhaust outlet fixed base orthographic projection formation is 30 millimeters smooth connection of circular arc with radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020071 CN2679405Y (en) | 2004-02-09 | 2004-02-09 | Fan structure of cooker hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020071 CN2679405Y (en) | 2004-02-09 | 2004-02-09 | Fan structure of cooker hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2679405Y true CN2679405Y (en) | 2005-02-16 |
Family
ID=34583234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020071 Expired - Lifetime CN2679405Y (en) | 2004-02-09 | 2004-02-09 | Fan structure of cooker hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2679405Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007034524A1 (en) | 2007-07-24 | 2009-01-29 | Siemens Ag | Simultaneous gasification of coal of widely varying levels of coalification in the flowstream gasification |
| CN102878597A (en) * | 2011-07-13 | 2013-01-16 | 浙江帅康电气股份有限公司 | Double-inlet fan range hood volute |
| CN104005996A (en) * | 2014-05-13 | 2014-08-27 | 珠海格力电器股份有限公司 | Volute, centrifugal fan volute and range hood |
| CN106286400A (en) * | 2016-09-23 | 2017-01-04 | 东华大学 | A kind of bionical snail tongue with high-efficient low-noise multi-wing centrifugal fan |
| CN110608194A (en) * | 2019-09-16 | 2019-12-24 | 华中科技大学 | Centrifugal fan turns to spiral case |
| CN112664479A (en) * | 2020-10-20 | 2021-04-16 | 宁波方太厨具有限公司 | Fume exhaust fan |
| WO2022088222A1 (en) * | 2020-11-02 | 2022-05-05 | 宁波方太厨具有限公司 | Parallel-connected double-fan system, and range hood applying same |
-
2004
- 2004-02-09 CN CN 200420020071 patent/CN2679405Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007034524A1 (en) | 2007-07-24 | 2009-01-29 | Siemens Ag | Simultaneous gasification of coal of widely varying levels of coalification in the flowstream gasification |
| CN102878597A (en) * | 2011-07-13 | 2013-01-16 | 浙江帅康电气股份有限公司 | Double-inlet fan range hood volute |
| CN102878597B (en) * | 2011-07-13 | 2015-05-27 | 浙江帅康电气股份有限公司 | Double-inlet fan range hood volute |
| CN104005996A (en) * | 2014-05-13 | 2014-08-27 | 珠海格力电器股份有限公司 | Volute, centrifugal fan volute and range hood |
| CN106286400A (en) * | 2016-09-23 | 2017-01-04 | 东华大学 | A kind of bionical snail tongue with high-efficient low-noise multi-wing centrifugal fan |
| CN106286400B (en) * | 2016-09-23 | 2018-12-04 | 东华大学 | A kind of bionical volute tongue with high-efficient low-noise multi-wing centrifugal fan |
| CN110608194A (en) * | 2019-09-16 | 2019-12-24 | 华中科技大学 | Centrifugal fan turns to spiral case |
| CN110608194B (en) * | 2019-09-16 | 2020-10-16 | 华中科技大学 | Centrifugal fan turns to spiral case |
| CN112664479A (en) * | 2020-10-20 | 2021-04-16 | 宁波方太厨具有限公司 | Fume exhaust fan |
| WO2022082847A1 (en) * | 2020-10-20 | 2022-04-28 | 宁波方太厨具有限公司 | Range hood |
| US11835060B2 (en) | 2020-10-20 | 2023-12-05 | Ningbo Fotile Kitchen Ware Co., Ltd. | Range hood |
| WO2022088222A1 (en) * | 2020-11-02 | 2022-05-05 | 宁波方太厨具有限公司 | Parallel-connected double-fan system, and range hood applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU BOSS APPLIANCES KITCHEN AND TOILET LTD. Free format text: FORMER OWNER: LAOBAN INDUSTRY GROUP CO., LTD., HANGZHOU Effective date: 20080606 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080606 Address after: No. 592, Linping Avenue, Yuhang Economic Development Zone, Zhejiang, Hangzhou Province: 311100 Patentee after: Hangzhou Robam Household Electrical Appliance Kitchen Sanitation Co., Ltd. Address before: Hangzhou, Zhejiang, Linping Province Bo Lu, zip code: 311103 Patentee before: Hongzhou Laoban Industry Group Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090213 Address after: No. 592, Linping Avenue, Yuhang Economic Development Zone, Zhejiang, Hangzhou Province: 311100 Patentee after: Hangzhou Robam Electric Appliance Co., Ltd. Address before: No. 592, Linping Avenue, Yuhang Economic Development Zone, Zhejiang, Hangzhou Province: 311100 Patentee before: Hangzhou Robam Household Electrical Appliance Kitchen Sanitation Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU BOSS ELECTRIC CO., LTD. Free format text: FORMER OWNER: HANGZHOU BOSS APPLIANCES KITCHEN AND TOILET LTD. Effective date: 20090213 |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20140209 Granted publication date: 20050216 |
|
| CX01 | Expiry of patent term |