CN101131163A - Draught fan with improved structure - Google Patents
Draught fan with improved structure Download PDFInfo
- Publication number
- CN101131163A CN101131163A CNA2006100531538A CN200610053153A CN101131163A CN 101131163 A CN101131163 A CN 101131163A CN A2006100531538 A CNA2006100531538 A CN A2006100531538A CN 200610053153 A CN200610053153 A CN 200610053153A CN 101131163 A CN101131163 A CN 101131163A
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- wheel hub
- plate
- motor
- snail
- spiral case
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Abstract
The fan in improved structure and with less noise includes one volute, one wind wheel inside the volute and one motor driving the wind wheel. The volute includes two side plates with air inlet and one flanged spiral plate with air outlet; and the wind wheel includes one hub and vanes around the hub. There is also one spiral tongue with flanged edges set at the air outlet. The present invention has the advantages of increased space inside the volute for lowered wind speed and less noise, and increased cross section of the air inlet channel reaching high air sucking effect.
Description
[affiliated technical field]
The present invention relates to a kind of centrifugal fan, the structure improved blower fan of the less noise that produces when relating in particular to a kind of work.
[technical background]
Centrifugal fan is widely used in cooker hood, and this blower fan comprises that the snail plate is the motor of dull and stereotyped spiral case and the wind wheel of being located at the spiral case inner chamber and driving wind wheel, and wind wheel mainly comprises wheel hub and is located at wheel hub blade on every side, and wheel hub is positioned at a side of wind wheel.Blower fan produces the air-flow of big blast when rotating, the noise of Xing Chenging is bigger thus, and the snail tongue in parallel airflow outlet port is the rectangular flat board of cardinal principle, has further strengthened noise, influences using effect.In addition, wheel hub is positioned at a side of wind wheel, and the motor that links to each other with wheel hub must be fixed on a side of wind wheel, and the space size that the both sides of wind wheel are communicated with the spiral case of blower fan is inequality.In blower fan when work,, motor has stopped that partly gas enters the space of wind wheel, and causing wind wheel to pass through its both sides, to suck the air-flow of gas inhomogeneous, produce noise, and inspiratory effects is not satisfactory.
[summary of the invention]
The technological scheme that the present invention will solve and the technical assignment of proposition are to overcome blower fan of the prior art produces bigger noise when work deficiency, provide a kind of when work the structure improved blower fan of the less noise that produces.
The present invention solves the technological scheme that the prior art problem adopted: structure improved blower fan, comprise spiral case, be provided with the motor of wind wheel and driving wind wheel in the spiral case, spiral case comprises biside plate and is located at snail plate between the biside plate that have intake grill on the side plate, the end and the side plate of snail plate form the air port, wind wheel comprises wheel hub and is located at wheel hub blade on every side, it is characterized in that being provided with the snail tongue at described exhaust outlet place, the limit of the corresponding exhaust outlet of snail tongue is for being flanging shape, and it is flap that the snail plate has a place at least.The snail plate can be a polygonal for forming the flap of at least two faces, also can be circular arc (circular arc is considered as some plane width here and trends towards the zero folding face that forms).The spiral case inner space obtains enlarging comparatively speaking, during work, under the air quantity in guaranteeing spiral case and the situation of blast, has reduced wind speed, thereby has reduced noise; Walkthrough gas is inhaled into spiral case from the both sides intake grill of side plate, plays the effect of even weighing apparatus air-flow, also can reduce the noise that spiral case produces.
Be provided with the blade of symmetry around the both sides of described wheel hub, the centre of wheel hub is provided with the motor receiving cavity, and described motor places this motor receiving cavity.Described wheel hub is a bowl-type, and this bowl-type inner chamber degree of depth is the 1/4-2/3 length of motor body, is connected with axle sleeve at this bowl-type wheel hub middle part, and this axle sleeve is set in outside the rotating shaft of motor.When cooker hood was worked, the driven by motor wind wheel rotated, and wind wheel is discharged the gas in the spiral case from the relief opening of spiral case, make to produce draught head in the spiral case, thereby the suction port of spiral case constantly sucked near the gas of pot and stove, finishes the work of getting rid of indoor oil smoke.The position relation of wheel hub and blade makes wheel hub be arranged on the nearly neutral position of wind wheel, and motor is the neutral position that is installed in the wind wheel inner chamber basically thus.Under the effect of wind wheel, the gas in the spiral case enters the inner chamber of wind wheel from the both sides of wheel hub, and the admission space of wind wheel both sides is basic identical, makes gas can enter the inner chamber of wind wheel uniformly from the wind wheel both sides, has further reduced noise.Simultaneously, the sectional area that gas enters the gas-entered passageway of wind wheel obtains increasing, and has improved inspiratory effects.
The structure of wind wheel in actual applications can also be in the following ways: described wheel hub is two bilateral symmetry, wheel hub arranged side by side, uniform blade in the same way around the wheel hub, the bowl-type receiving cavity of left wheel hub is an inner cavity, the bowl-type receiving cavity of right wheel hub is the evagination chamber, described evagination chamber places inner cavity, and described motor places in the evagination chamber of right wheel hub.Here, the degree of depth in evagination chamber is the bowl-type inner chamber degree of depth of bowl-type wheel hub.
The cross section of described snail tongue and exhaust outlet acutangulates setting, be the extension of indent arc by the snail plate and form, and the base is flanging shape.The shape of snail tongue can be identical with the flap shape of snail plate, also can be other flap shape (as long as can guarantee that flap shape bending direction is towards exhaust outlet).The base of snail tongue is outer flanging shape (being the inner chamber of the opening of flanging towards spiral case), has reduced noise.
Described flap is located at the top, bottom of spiral case or/and the side.Both top, bottom and side can be located at simultaneously, top, the position in bottom and side or two positions can be only be located at again.Flap can also start from snail wrench portion, and the afterbody of snail plate makes whole snail plate all have flap to constitute finally.
Outer rim at described intake grill is provided with the wind gathering plate, is provided with the air outlet tube link in the outer of described exhaust outlet.Being provided with of wind gathering plate can suck spiral case with walkthrough gas efficiently, improves exhaust efficiency.The setting of link is that air outlet tube is installed on cooker hood for convenience, and the guiding soot gas is discharged outdoor.
Described motor fixes by some connecting rods and spiral case, and connecting rod is " L " font.One end of connecting rod is fixed on by link on the case of motor, and the other end is fixed on the side plate of spiral case.
Advantage of the present invention is: 1, the snail plate is flap shape, has enlarged the intracavity space of spiral case, reduces wind speed, can effectively reduce the generation of noise; 2, the limit of snail tongue is flanging shape, has further reduced noise; 3, the admission space of wind wheel both sides is basic identical, and during work, gas can enter the wind wheel inner chamber uniformly, and then has reduced the generation of noise; 4, gas enters the sectional area increase of the gas-entered passageway of wind wheel, has improved inspiratory effects.
[description of drawings]
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is that accompanying drawing 1 plan structure partial cutaway is shown schematic representation;
Fig. 3 is a kind of sectional structure schematic representation of wind wheel part among the present invention.
Among the figure: 1. wind wheel, 2. motor, 3. blade, 4. wheel hub, 5. wheel rim, 6. axle sleeve, 7. motor case, 8. connecting rod, 9. motor receiving cavity, 10. spiral case, 11. snail plates, 12. side plates, 13. snail tongues, 14. intake grills, 15. exhaust outlets, 16. wind gathering plates, 17. air outlet tube links.
[embodiment]
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Embodiment 1: as depicted in figs. 1 and 2, structure improved blower fan comprises spiral case 10 and is located at the wind wheel 1 of spiral case 10 inner chambers and the motor 2 that drives wind wheel 1, spiral case 10 comprises biside plate 12 and is located at snail plate 11 between the biside plate 12, have intake grill 14 on the side plate 12, the end of snail plate 11 and side plate 12 are formed with exhaust outlet 15, and 15 places are provided with snail tongue 13 at exhaust outlet.It is flap that snail plate 11 has a place at least.And flap is at least two faces, and the shape of flap can be a polygonal, also can be circular arc, and concrete shape can determine according to actual needs that the bending opening direction that only need satisfy flap gets final product towards the inner chamber of spiral case.Flap can be located at the top, bottom of spiral case or/and the side both can be located at top, bottom and side simultaneously, can only be located at top, the position in bottom and side or two positions again.Snail tongue 13 acutangulates setting with the cross section of exhaust outlet 15, and the base is flanging shape, and snail tongue 13 also can be arranged in parallel with the cross section of exhaust outlet 15, only need guarantee that snail tongue 13 bases are flanging shape and get final product, and the bending opening direction of flanging is towards the inner chamber of spiral case.And snail tongue 13 can also be the extension of indent arc by snail plate 11 and form.
Intake grill 14 is opened respectively at the middle part of biside plate 12, and is provided with wind gathering plate 16 in the outer rim of intake grill 14.The outer of exhaust outlet 15 is provided with air outlet tube link 17 (being used to connect air outlet tube).
Wind wheel 1 comprises wheel hub 4 and is located at blade 3 around the wheel hub, and the middle part of wheel hub 4 is drawn into bowl-type, is provided with motor receiving cavity 9 in the middle of it, and the bowl-type inner chamber degree of depth of wheel hub 4 is roughly half of motor 2 body length, and motor 2 places this motor receiving cavity 9.These bowl-type wheel hub 4 middle parts are connected with axle sleeve 6, and axle sleeve 6 is set in outside the rotating shaft of motor.Be provided with the blade 3 (this similar is in single wind wheel, and wheel hub is arranged on the nearly neutral position of wind wheel) of symmetry around the both sides of wheel hub 4.The end of blade 3 is provided with wheel rim 5.The parallel axes of blade 3 relative axle sleeves 6 and wheel rim 5, be installed between the edge and wheel rim 5 of wheel hub 4 equably.
Motor 2 fixes by four " L " font connecting rods 8 and spiral case, and on motor case 7, the other end is fixed on the side plate 11 of spiral case 10 end of connecting rod 8 by screw.
With this spiral case 10 with again wind wheel is installed in the spiral case 10 after motor 2 is connected, the spiral case 10 that wind wheel 1, motor 2 will be housed then is installed on the cooker hood.During use, motor 2 drives wind wheel 1 and rotates, and wind wheel 2 sucks near the gas the pot and stove at cooker hood place from intake grill 14, discharge from relief opening, make the suction port of spiral case constantly suck near the gas the pot and stove, thereby the oil smoke that produces will cook the time is discharged outdoor.Under the effect of wind wheel, gas in the spiral case enters the inner chamber of wind wheel from the both sides of wheel hub, and motor is installed in the neutral position of wind wheel inner chamber basically, the admission space of wind wheel both sides is basic identical, make gas can enter the inner chamber of wind wheel uniformly from the wind wheel both sides, reduced noise to a certain extent.Because improved the snail plate structure, enlarge the volume of spiral case internal cavities again, guarantee to have reduced wind speed, and then reduced noise under the situation of air quantity in the spiral case and blast; Improve the snail tongue structure, further reduced the generation of noise.
Embodiment 2: as shown in figures 1 and 3, in structure improved blower fan, wheel hub 4 also can be two bilateral symmetry, wheel hub arranged side by side, uniform blade in the same way 3 around wheel hub 4, the bowl-type receiving cavity of left wheel hub 4 is an inner cavity, the bowl-type receiving cavity of right wheel hub 4 is the evagination chamber, and the evagination chamber places inner cavity (wind wheel of this structure is similar to two independent wind wheels and is emitted on together side by side, and wheel hub is positioned at the neutral position).All the other structures are with embodiment 1.
Embodiment 3: as depicted in figs. 1 and 2, in structure improved blower fan, flap can also start from snail plate 11 heads, and the afterbody of snail plate 11 makes whole snail plate 11 all have flap to constitute finally.All the other structures are with embodiment 1 or embodiment 2.
Claims (9)
1. structure improved blower fan, comprise spiral case (10), be provided with the motor (2) of wind wheel (1) and driving wind wheel (1) in the spiral case (10), spiral case (10) comprises biside plate (12) and is located at snail plate (11) between the biside plate (12), have intake grill (14) on the side plate (12), the end of snail plate (11) and side plate (12) form air port (15), wind wheel (1) comprises wheel hub (4) and is located at wheel hub blade (3) on every side, it is characterized in that locating to be provided with snail tongue (13) at described exhaust outlet (15), the limit of the corresponding exhaust outlet of snail tongue (13) (15) is for being flanging shape, and it is flap that snail plate (11) has a place at least.
2. structure improved blower fan according to claim 1 is characterized in that the both sides of described wheel hub (4) are provided with the blade (3) of symmetry on every side, and the centre of wheel hub (4) is provided with motor receiving cavity (9), and described motor (2) places this motor receiving cavity (9).
3. structure improved blower fan according to claim 1, it is characterized in that described wheel hub (4) is two bilateral symmetry, wheel hub arranged side by side, the uniform on every side blade in the same way of wheel hub (4) (3), the bowl-type receiving cavity of left wheel hub (4) is an inner cavity, the bowl-type receiving cavity of right wheel hub (4) is the evagination chamber, described evagination chamber places inner cavity, and described motor (2) places in the evagination chamber of right wheel hub (4).
4. according to claim 1 or 2 or 3 described structure improved blower fans, it is characterized in that the described snail tongue (13) and the cross section of exhaust outlet (15) acutangulate setting, be the extension of indent arc by snail plate (11) and form, and the base is flanging shape.
5. structure improved blower fan according to claim 4 is characterized in that described flap is located at the top of spiral case (10), bottom or/and the side.
6. structure improved blower fan according to claim 4 is characterized in that described flap starts from snail plate (11) head, the afterbody of snail plate (11) finally.
7. according to claim 5 or 6 described structure improved blower fans, it is characterized in that described wheel hub (4) is bowl-type, this bowl-type inner chamber degree of depth is the 1/4-2/3 length of motor (2) body, and this bowl-type wheel hub (4) middle part is connected with axle sleeve (6), and this axle sleeve (6) is set in outside motor (2) rotating shaft.
8. structure improved blower fan according to claim 7 is characterized in that being provided with wind gathering plate (16) in the outer rim of described intake grill (14), is provided with air outlet tube link (17) in the outer of described exhaust outlet (15).
9. structure improved blower fan according to claim 7 is characterized in that described motor (2) is fixed in spiral case (10) inner chamber by some connecting rods (8), and connecting rod (8) is " L " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100531538A CN101131163A (en) | 2006-08-25 | 2006-08-25 | Draught fan with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100531538A CN101131163A (en) | 2006-08-25 | 2006-08-25 | Draught fan with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101131163A true CN101131163A (en) | 2008-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100531538A Pending CN101131163A (en) | 2006-08-25 | 2006-08-25 | Draught fan with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101131163A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463833B (en) * | 2008-12-18 | 2012-05-09 | 浙江兴昌风机有限公司 | Centrifugal wind wheel and manufacturing method thereof |
| CN104343732A (en) * | 2014-08-29 | 2015-02-11 | 宁波方太厨具有限公司 | Volute tongue structure of fan for range hood |
| WO2023279817A1 (en) * | 2021-07-07 | 2023-01-12 | 广东美的暖通设备有限公司 | Fan assembly and air conditioner |
-
2006
- 2006-08-25 CN CNA2006100531538A patent/CN101131163A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101463833B (en) * | 2008-12-18 | 2012-05-09 | 浙江兴昌风机有限公司 | Centrifugal wind wheel and manufacturing method thereof |
| CN104343732A (en) * | 2014-08-29 | 2015-02-11 | 宁波方太厨具有限公司 | Volute tongue structure of fan for range hood |
| WO2023279817A1 (en) * | 2021-07-07 | 2023-01-12 | 广东美的暖通设备有限公司 | Fan assembly and air conditioner |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20080227 |