CN202500817U - Blower fan structure for smoke ventilator - Google Patents
Blower fan structure for smoke ventilator Download PDFInfo
- Publication number
- CN202500817U CN202500817U CN2012200867662U CN201220086766U CN202500817U CN 202500817 U CN202500817 U CN 202500817U CN 2012200867662 U CN2012200867662 U CN 2012200867662U CN 201220086766 U CN201220086766 U CN 201220086766U CN 202500817 U CN202500817 U CN 202500817U
- Authority
- CN
- China
- Prior art keywords
- spiral case
- blower fan
- fan structure
- circle
- kitchen ventilator
- 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
Links
Images
Abstract
The utility model relates to a blower fan structure for a smoke ventilator. The utility model aims to provide a blower fan structure for a smoke ventilator so as to reduce inner swirling flow and air flow loss and enhance air quantities and air pressure. The blower fan structure has a simple structure and good smoke absorption effects. The blower fan structure for a smoke ventilator comprises a spiral case, an air inlet loop equipped on an air inlet of the spiral case, a drive motor equipped inside the spiral case and a centrifugal impeller. The blower fan structure is characterized in that the air inlet loop comprises an outer loop, a middle loop and an inner loop which are integrally moulded and arranged coaxially from the outside to the inside. The outer loop is connected with the spiral case. The middle loop which is of a flat circular ring shape is arranged in a way to be parallel to the plane where the spiral case air inlet resides. The inner loop is cylindrical and has two through ends. The inner loop which is integrally located inside the spiral case is arranged in a way to be perpendicular to the plane where the spiral case air inlet resides. The blower fan structure provided in the utility model is suitably applied in various smoke ventilators.
Description
Technical field
The utility model relates to a kind of kitchen ventilator and uses blower fan structure, mainly is applicable in the various kitchen ventilators.
Background technique
In order to improve the kitchen ventilation condition and to get rid of oil smoke and the waste gas that produces in the cooking process, range hood has become household electric appliance indispensable in the kitchen.Owing to having that suction is big, noise is lower and in the long-term operation process, need not to clean, centrifugal blower is widely used in the modern range hood.Centrifugal blower mainly by air intake circle, spiral case, be installed in the drive motor on the spiral case and the multiple wing type centrifugal impeller that rotated by motor driving etc. is formed.When centrifugal blower started, the rotation through impeller was at the inner negative pressuren zone that forms of spiral case, thereby the kitchen air outside is sucked spiral case and discharges, and reached the purpose of lampblack absorbing.
The size of airflow pressure is to estimate an important indicator of kitchen ventilator quality, and the principal element that influences the kitchen ventilator airflow pressure comprises: the quality of the quality of intake grill, the quality of blower fan system and exhaust outlet.The quality of blower fan system is except the quality of multiple wing type centrifugal impeller and spiral case coupling, and the design of air intake circle also has certain influence to airflow pressure.The cross section of the used air intake circle of selling in the market of kitchen ventilator is the middle part and becomes semicircle shape toward outer process; As shown in Figure 1; Its shortcoming is: the multiple wing type centrifugal impeller can rebound in the compacting of the wind process air intake circle that rotation process is escaped, because rebound surface is semicircle, the wind that makes bounce-back return becomes disorderly and unsystematic; The rotation wind that causes the multiple wing type centrifugal impeller to produce partly is cancelled, thereby has reduced the airflow pressure of blower fan system.
Summary of the invention
The technical problem that the utility model will solve is: the problem to above-mentioned existence provides a kind of kitchen ventilator simple in structure, that smoking is effective to use blower fan structure, reduces inner swirling flow and windage loss to reach, and improves the purpose of airflow pressure.
The technological scheme that the utility model adopted is: kitchen ventilator is used blower fan structure; Comprise spiral case, be installed on the air intake circle at spiral case intake grill place; And be installed on spiral case inner drive motor and centrifugal impeller, it is characterized in that: said air intake circle comprises coaxial arrangement and integrated outer ring, centre circle and inner ring from outside to inside, and wherein the outer ring is connected with spiral case; It is flat circular that centre circle is; And be parallel to spiral case intake grill place layout, inner ring is cylindric that two ends connect, and its integral body is positioned at spiral case inside and belongs to layout perpendicular to the spiral case intake grill.
The joint of said centre circle and inner ring is designed to the fillet that cross section is an arc, and this fillet is connected with the inner ring rounding off with centre circle respectively.
It is flat circular that said outer ring is, and with the centre circle layout that is parallel to each other, the transition circle is set simultaneously between the two forms the stepped integrative-structure of cross section.
Said transition circle cross section is the straightway that one and plane, centre circle place are the acute angle layout, and its two ends link into an integrated entity with outer ring and centre circle respectively.
The number of degrees of said acute angle are 45 degree.
Said centre circle arrives the distance of centrifugal impeller less than the outer ring to the distance of centrifugal impeller.
Said inner ring is terminal to be 4-5mm to centrifugal impeller apart from d.
The internal diameter of said air intake circle is than the little 2-6mm of internal diameter of centrifugal impeller.
The beneficial effect of the utility model is: the air intake circle comprises coaxial arrangement and integrated outer ring, centre circle and inner ring from outside to inside in the utility model, and wherein the outer ring is used for being connected with spiral case, and it is flat circular that centre circle is; And be parallel to spiral case intake grill place layout; The wind that the wheel rotation process that is used for rebounding is escaped, because its rebound surface is the plane, the therefore wind after its bounce-back; The direction uniformity; Significantly reduce turbulent flow and windage loss in the spiral case, thereby effectively promoted airflow pressure, improved the smoking effect of kitchen ventilator.
Description of drawings
Fig. 1 is air intake circle sectional view and the wind direction schematic representation after its bounce-back in the existing technology.
Fig. 2 is the structural drawing of the utility model.
Fig. 3 be the utility model partly cut open stereogram.
Fig. 4 is the sectional view and the wind direction schematic representation after its bounce-back of air intake circle in the utility model.
Fig. 5 is the A portion enlarged view of Fig. 2.
Fig. 6 is the B portion enlarged view of Fig. 2.
Embodiment
Like Fig. 2, shown in Figure 3; Present embodiment comprises by header board 51, side plate 52, back plate 53 and exhaust outlet 54 and is welded to each other the spiral case 5 that is connected to form; The intake grill place of this spiral case is installed into solar or lunar halo 1; Inner through electric machine support 6 installing drive motors 3, the output shaft of drive motor is installed multiple wing type centrifugal impeller 4 through impeller cap 2.
As shown in Figure 4, said air intake circle 1 comprises coaxial arrangement and integrated outer ring 1-1, centre circle 1-2 and inner ring 1-3 from outside to inside.Wherein outer ring 1-1 is flat circular, evenly offers one group of mounting hole on it, and is fixedly connected with the header board 51 of spiral case 5 through screw.It is flat circular that centre circle 1-2 is, and be parallel to plane, spiral case 5 intake grills place (being plane, spiral case header board place) and arrange, the wind that centrifugal impeller 4 rotation processes that are used for rebounding are escaped; Because its rebound surface (centre circle inner side surface) is the plane, so the wind after its bounce-back, the direction uniformity has significantly reduced turbulent flow and windage loss in the spiral case 5, thereby has effectively promoted airflow pressure.Inner ring 1-3 is cylindric that two ends connect, and its integral body is positioned at spiral case 5 inside and belongs to layout perpendicular to spiral case 5 intake grills.
Windage when reducing air intake, this example is designed to the fillet that cross section is an arc with the joint of centre circle 1-2 and inner ring 1-3, and this fillet is connected with inner ring 1-3 rounding off with centre circle 1-2 respectively.Outer ring 1-1 and centre circle 1-2 layouts (centre circle arrives the distance of centrifugal impeller less than the outer ring to the distance of centrifugal impeller) that be parallel to each other simultaneously, the while is provided with the stepped integrative-structure of transition circle 1-4 formation cross section between the two; As shown in Figure 5, transition circle 1-4 cross section is the straightway that one and plane, centre circle 1-2 place are the miter angle layout in this example, and wherein an end is connected with outer ring 1-1 internal diameter, and the other end is connected with centre circle 1-2 external diameter.
As shown in Figure 6, said inner ring 1-3 is terminal to be 4-5mm to centrifugal impeller 4 apart from d.
The internal diameter of said air intake circle 1 (being the internal diameter of inner ring) is than the little 2-6mm of internal diameter of centrifugal impeller 4.
Claims (8)
1. a kitchen ventilator is used blower fan structure; Comprise spiral case (5), be installed on the air intake circle (1) at spiral case (5) intake grill place; And the drive motor (3) and the centrifugal impeller (4) that are installed on spiral case (5) inside; It is characterized in that: said air intake circle (1) comprises coaxial arrangement and integrated outer ring (1-1), centre circle (1-2) and inner ring (1-3) from outside to inside; Wherein outer ring (1-1) is connected with spiral case (5), and it is flat circular that centre circle (1-2) is, and is parallel to spiral case (5) intake grill place layout; Inner ring (1-3) is cylindric that two ends connect, and its integral body is positioned at spiral case (5) inside and belongs to layout perpendicular to spiral case (5) intake grill.
2. kitchen ventilator according to claim 1 is used blower fan structure; It is characterized in that: said centre circle (1-2) is designed to the fillet that cross section is an arc with the joint of inner ring (1-3), and this fillet is connected with inner ring (1-3) rounding off with centre circle (1-2) respectively.
3. kitchen ventilator according to claim 1 and 2 is used blower fan structure; It is characterized in that: said outer ring (1-1) is flat circular; With centre circle (1-2) layout that is parallel to each other, transition circle (1-4) is set simultaneously between the two forms the stepped integrative-structure of cross section.
4. kitchen ventilator according to claim 3 is used blower fan structure; It is characterized in that: said transition circle (1-4) cross section is the straightway that one and plane, centre circle (1-2) place are the acute angle layout, and its two ends link into an integrated entity with outer ring (1-1) and centre circle (1-2) respectively.
5. kitchen ventilator according to claim 4 is used blower fan structure, it is characterized in that: the number of degrees of said acute angle are 45 degree.
6. kitchen ventilator according to claim 3 is used blower fan structure, it is characterized in that: said centre circle (1-2) arrives the distance of centrifugal impeller (4) less than outer ring (1-1) to the distance of centrifugal impeller (4).
7. kitchen ventilator according to claim 1 and 2 is used blower fan structure, it is characterized in that: said inner ring (1-3) is terminal to be 4-5mm to centrifugal impeller (4) apart from d.
8. kitchen ventilator according to claim 1 and 2 is used blower fan structure, it is characterized in that: the internal diameter of said air intake circle (1) is than the little 2-6mm of internal diameter of centrifugal impeller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200867662U CN202500817U (en) | 2012-03-09 | 2012-03-09 | Blower fan structure for smoke ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200867662U CN202500817U (en) | 2012-03-09 | 2012-03-09 | Blower fan structure for smoke ventilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202500817U true CN202500817U (en) | 2012-10-24 |
Family
ID=47037432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200867662U Expired - Lifetime CN202500817U (en) | 2012-03-09 | 2012-03-09 | Blower fan structure for smoke ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202500817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906575A (en) * | 2017-12-28 | 2018-04-13 | 杭州老板电器股份有限公司 | Air intake device and kitchen ventilator |
-
2012
- 2012-03-09 CN CN2012200867662U patent/CN202500817U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906575A (en) * | 2017-12-28 | 2018-04-13 | 杭州老板电器股份有限公司 | Air intake device and kitchen ventilator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107023862B (en) | A kind of top-sucking kitchen ventilator | |
| CN203717463U (en) | Energy-efficient low-noise outer-rotor centrifugal fan | |
| CN104728158A (en) | Wind wheel for range hood | |
| CN203051226U (en) | Fan structure of range hood | |
| CN203130542U (en) | Pipeline draught fan easy to clean, disassemble and assemble | |
| CN202789739U (en) | Fan of range hood | |
| CN202500817U (en) | Blower fan structure for smoke ventilator | |
| CN203500117U (en) | Volute device with large blast capacity | |
| CN202177154U (en) | Smoke exhaust ventilator | |
| CN207864255U (en) | A kind of spiral case with surge bunker and the kitchen ventilator comprising the spiral case | |
| CN207865500U (en) | A kind of turbine with supercharging fin and the kitchen ventilator comprising the turbine | |
| CN102937112A (en) | Fan volute intermediate plate guide vane air inlet structure of smoke exhaust ventilator | |
| CN110360631A (en) | A kind of Portable kitchen ventilator | |
| CN202195522U (en) | Air-out device of range hood | |
| CN202734013U (en) | Spiral-flow type pressurization range hood | |
| CN204984995U (en) | Range hood | |
| CN105179312A (en) | Impeller device | |
| CN210164687U (en) | Range hood's fan and range hood | |
| CN202328450U (en) | Spiral case with flow stabilization and denoising functions | |
| CN207865489U (en) | Integrated kitchen range with turbocharging function | |
| CN207660859U (en) | Intermediate flow middle pressure wind turbine | |
| CN212362141U (en) | Positive pressure air sweeping device for integrated stove and traditional stove | |
| CN205806008U (en) | A kind of lampblack absorber wind wheel assembly | |
| CN204572554U (en) | Wind wheel for range hood | |
| CN201152572Y (en) | Cooking fume exhauster with double windwheel |
Legal Events
| 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: 20121024 |