CN103267022A - Asymmetric centrifugal fan and ducted air conditioning unit air supplying device - Google Patents
Asymmetric centrifugal fan and ducted air conditioning unit air supplying device Download PDFInfo
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- CN103267022A CN103267022A CN2013102130096A CN201310213009A CN103267022A CN 103267022 A CN103267022 A CN 103267022A CN 2013102130096 A CN2013102130096 A CN 2013102130096A CN 201310213009 A CN201310213009 A CN 201310213009A CN 103267022 A CN103267022 A CN 103267022A
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- fan hub
- dividing plate
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- centrifugal cutter
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Abstract
The invention discloses an asymmetric centrifugal fan, and belongs to the field of centrifugal fans. The asymmetric centrifugal fan comprises blades, a round partition plate, a first fan hub arranged on a first side of the round partition plate, and a second fan hub arranged on a second side of the round partition plate. The blades comprise a first blade set and a second blade set. The first blade set is arranged between the first fan hub and the round partition plate. The second blade set is arranged between the second fan hub and the round partition plate. A shaft sleeve is arranged in the middle of the round partition plate, the distance between the first fan hub and the round partition plate is less than the distance between the second fan hub and the round partition plate, and the ratio between the distance from the first fan hub to the round partition plate and the distance from the first fan hub to the second fan hub is 0.45. An asymmetric structure is adopted in the asymmetric centrifugal fan, and therefore the asymmetric centrifugal fan is smooth in air intake, strong in air supplying capacity, large in air inlet space, and sufficient in air flow.
Description
Technical field
The present invention relates to the centrifugal cutter field, the wind pipe machine blast device that relates in particular to a kind of asymmetric centrifugal cutter and described asymmetric centrifugal cutter is installed.
Background technique
The symmetric type centrifugal cutter is usually used in the suction of gas, has advantages such as compact structure, efficient height, noise be low, and its utilization scope is wide, is applicable to products such as air duct machine, air conditioner.
CN201306307Y discloses a kind of centrifugal cutter as the Chinese patent literature notice of authorization, be the symmetric type centrifugal cutter, it comprises some blades, hub, disk and inserts, described vane tip is connected with hub, the bottom is connected with disk, described inserts is installed in disk central authorities, the outer wall of described inserts one end is provided with two annular grooves that are parallel to each other, described groove is made up of the wide groove of half cycle and the narrow groove of half cycle, the height of whole fan is 160～200MM, external diameter is 140～180MM, and the thickness of described hub is 4～6MM.
Above-mentioned model utility has characteristics such as mechanical strength height, shock-resistant, endurance, high-low temperature resistant, and fan has good dimensional stability, can effectively guarantee dynamic balancing.But because it adopts symmetric type, when centrifugal cutter is combined with machine shaft, fixedly connected with inserts in the inside that one end of rotating shaft need insert centrifugal cutter, because inserts is positioned on the disk at middle part of described centrifugal cutter, so there is the wind near half when blade flows into, can import motor and electric machine support place side, be subjected to the interference of rotating shaft, motor and electric machine support, air intake is not smooth, i.e. the air intake space of the wind of the intake grill of motor and electric machine support place side importing is stopped by rotating shaft, motor and electric machine support and dwindles.
Summary of the invention
Limited in order to overcome existing centrifugal blower draft capacity, air intake is not smooth, and a part of air-flow is subject to defectives such as interference, technical problem to be solved by this invention is to propose a kind of centrifugal cutter, adopts non-symmetry structure, and its air intake is unobstructed, draft capacity is strong, and air intake space is big, the gas flow abundance.
The technical problem that the present invention also will solve is to propose a kind of wind pipe machine blast device that described asymmetric centrifugal cutter is installed, and it takes up room little, more miniaturization and lightening.
For reaching this purpose, the present invention by the following technical solutions:
A kind of asymmetric centrifugal cutter, comprise blade, circular dividing plate, be located at described circular dividing plate first side first the fan hub and be located at described circular dividing plate second side second the fan hub, described blade comprises first vane group and second vane group, described first vane group is located between the described first fan hub and the described circular dividing plate, described second vane group is located between the described second fan hub and the described circular dividing plate, the middle part of described circular dividing plate is provided with axle sleeve, and the described first fan hub to the distance of described circular dividing plate is fanned hub to the distance of described circular dividing plate less than described second.
Further, in above-mentioned centrifugal cutter, first end of described first vane group is fixed on the edge of first side of described circular dividing plate, and its second end is fixed on the edge of the described first fan hub.
Further, in above-mentioned centrifugal cutter, first end of described second vane group is fixed on the edge of second side of described circular dividing plate, and its second end is fixed on the edge of the described second fan hub.
Be preferably, in above-mentioned centrifugal cutter, the described first fan hub is k with the described first fan hub to described second ratio of fanning the distance of hub to the distance of described circular dividing plate, 0.4≤k＜0.5.
Be preferably, in above-mentioned centrifugal cutter, the described first fan hub is to the distance and the ratio k=0.45 of the described first fan hub to the distance of the described second fan hub of described circular dividing plate.
A kind of wind pipe machine blast device that above-mentioned asymmetric centrifugal cutter is installed comprises spiral case, fixing backed motor and the rotating shaft that links to each other with described motor, and described asymmetric centrifugal cutter is located in the described spiral case.
Further, in above-mentioned wind pipe machine blast device, fixedly connected with described axle sleeve in the inside that an end of described rotating shaft penetrates described first vane group.
Be preferably, in above-mentioned wind pipe machine blast device, comprise plural spiral case, each described spiral case inside is equipped with described asymmetric centrifuge.
Beneficial effect of the present invention is: the present invention adopts non-symmetry structure, dwindle the length of centrifugal cutter near the vane region of obstacle place side, also reduced the length of rotating shaft, thereby reduced obstacle to the influence of air output, make air output increase, air intake is more freely suitable; Because the fan of the non-symmetry structure of equal volume has bigger air output than the fan of symplex structure, so be under the situation of quota at the air output of wind pipe machine, the wind pipe machine blast device volume of employing asymmetric centrifugal cutter is littler, and occupation space is also littler; When wind pipe machine is installed plural above-mentioned asymmetric centrifugal cutter, the wind pipe machine occupation space be can significantly dwindle, wind pipe machine miniaturization, lightening development trend more met.
Description of drawings
Fig. 1 is the front view of the asymmetric centrifugal cutter that provides of the specific embodiment of the invention;
Fig. 2 is the side view of the asymmetric centrifugal cutter that provides of the specific embodiment of the invention;
Fig. 3 is the structural representation of the wind pipe machine blast device that provides of the specific embodiment of the invention.
Among the figure:
1, circular dividing plate; 2, the first fan hub; 3, the second fan hub; 4, first vane group; 5, second vane group; 6, axle sleeve; 7, asymmetric centrifugal cutter; 8, spiral case; 9, motor; 10, rotating shaft.
Embodiment
Further specify technological scheme of the present invention below in conjunction with accompanying drawing and by embodiment.
As depicted in figs. 1 and 2, be the structural representation of asymmetric centrifugal cutter.
A kind of asymmetric centrifugal cutter 7 that provides in the present embodiment, it comprises blade, circular dividing plate 1, the first fan hub 2 and the second fan hub 3, the described first fan hub 2 is located at first side of described circular dividing plate 1, on the left of namely among the figure, the described second fan hub 3 is located at second side of described circular dividing plate 1, i.e. right side among the figure, the middle part of described circular dividing plate 1 is provided with axle sleeve 6.
Described blade comprises first vane group 4 and second vane group 5, and described first vane group 4 is located between the described first fan hub 2 and the described circular dividing plate 1, and described second vane group 5 is located between the described second fan hub 3 and the described circular dividing plate 1.
First end of described first vane group 4 is fixed on the edge of described first side of described circular dividing plate 1, and its second end is fixed on the edge of the described first fan hub 2; First end of described second vane group 5 is fixed on the edge of described second side of described circular dividing plate 1, and its second end is fixed on the edge of the described second fan hub 3.
The described first fan hub 2 to the distance of described circular dividing plate 1 less than the distance of the described second fan hub 3 to described circular dividing plate 1, make the position of described circular dividing plate with respect to the midline shift of described centrifugal cutter, form asymmetrical centrifugal cutter structure.The distance that optimal way in the present embodiment is the described first fan hub 2 to the distance of described circular dividing plate 1 and the described first fan hub 2 to the described second fan hub 3 be [0.40 than k scope, 0.5), be preferably 0.45, just the described second fan hub 3 to the distance of described circular dividing plate 1 is 0.55 with the described first fan hub 1 to described second ratio of fanning the distance of hub 3.
Because penetrating the inside of described first vane group 4, an end of rotating shaft 10 fixedlys connected with described axle sleeve 6, so wind from described first vane group 4 inflows between the described first fan hub 2 and the described circular dividing plate 1, be vulnerable to the interference of rotating shaft, motor and electric machine support, namely air duct and inner barrier thing cause the problem that air intake is not smooth.Therefore, the ratio of the preferred described first fan hub 2 to the distance of described circular dividing plate 1 and the described first fan hub 2 to the distance of the described second fan hub 3 is 0.45 non-symmetry structure centrifugal cutter in this enforcement, dwindled the length of centrifugal cutter near the vane region of obstacle place side, thereby reduce obstacle to the influence of air output, make air output increase, air intake is more freely suitable.
In addition, should notice that described first fan hub 2 to the distance of described circular dividing plate 1 can not be too small, one side of the too close asymmetric centrifugal cutter 7 of rotating shaft, the possibility that can cause the opposite side of asymmetric centrifugal cutter 7 to shake increases, and is unfavorable for the 7 stable rotations of asymmetric centrifugal cutter.Therefore, under the situation that guarantees the 7 stable rotations of asymmetric centrifugal cutter, should reduce the described first fan hub 2 as much as possible to the distance of described circular dividing plate 1.
As shown in Figure 3, be the structural representation of wind pipe machine blast device.
The described a kind of wind pipe machine blast device that above-mentioned asymmetric centrifugal cutter 7 is installed of present embodiment comprises a spiral case 8, motor 9 and rotating shaft 10, and described motor 9 is fixed on the bearing, and described rotating shaft 10 links to each other with described motor 9.
Described asymmetric centrifugal cutter 7 is located in the described spiral case 8, because the asymmetric centrifugal cutter 7 of equal volume has bigger air output than the symmetric type centrifugal cutter, so the air output at wind pipe machine is under the situation of quota, adopt the wind pipe machine blast device volume of asymmetric centrifugal cutter littler, occupation space is also littler.
Fixedly connected with axle sleeve 6 in the inside that one end of described rotating shaft 10 penetrates described first vane group 4, described axle sleeve 6 is located on the circular dividing plate.Described motor 9 drives described rotating shaft 10 rotations, and described rotating shaft 10 drives described asymmetric centrifugal cutter 7, thereby makes wind suck from first vane group 4 and second vane group 5.
The wind pipe machine blast device can also comprise plural spiral case 8, and each described spiral case 8 inside is equipped with described asymmetric centrifuge 7.When wind pipe machine is installed plural above-mentioned asymmetric centrifugal cutter, the wind pipe machine occupation space be can significantly dwindle, wind pipe machine miniaturization, lightening development trend more met.
The present invention is described by preferred embodiment, and those skilled in the art know, under the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.The present invention is not subjected to the restriction of specific embodiment disclosed herein, and other interior embodiments of claim that fall into the application belong to the scope of protection of the invention.
Claims (8)
1. an asymmetric centrifugal cutter (7), comprise blade, circular dividing plate (1), be located at the first second fan hub (3) of fanning hub (2) and being located at second side of described circular dividing plate (1) of first side of described circular dividing plate (1), described blade comprises first vane group (4) and second vane group (5), described first vane group (4) is located between the described first fan hub (2) and the described circular dividing plate (1), described second vane group (5) is located between the described second fan hub (3) and the described circular dividing plate (1), the middle part of described circular dividing plate (1) is provided with axle sleeve (6), it is characterized in that:
The described first fan hub (2) to the distance of described circular dividing plate (1) makes the position of described circular dividing plate with respect to the midline shift of described centrifugal cutter less than the described second fan hub (3) to the distance of described circular dividing plate (1).
2. asymmetric centrifugal cutter according to claim 1 (7), it is characterized in that, the described first fan hub (2) is k with the described first fan hub (2) to described second ratio of fanning the distance of hub (3) to the distance of described circular dividing plate (1), 0.4≤k＜0.5.
3. asymmetric centrifugal cutter according to claim 2 (7) is characterized in that, the described first fan hub (2) is to the distance and the ratio k=0.45 of the described first fan hub (2) to the distance of the described second fan hub (3) of described circular dividing plate (1).
4. asymmetric centrifugal cutter according to claim 1 and 2 (7), it is characterized in that, first end of described first vane group (4) is fixed on the edge of described first side of described circular dividing plate (1), and its second end is fixed on the edge of the described first fan hub (2).
5. asymmetric centrifugal cutter according to claim 1 and 2 (7), it is characterized in that, first end of described second vane group (5) is fixed on the edge of described second side of described circular dividing plate (1), and its second end is fixed on the edge of the described second fan hub (3).
6. wind pipe machine blast device that each described asymmetric centrifugal cutter (7) of claim 1-5 is installed, comprise spiral case (8), fixing backed motor (9) and the rotating shaft (10) that links to each other with described motor (9), it is characterized in that described asymmetric centrifugal cutter (7) is located at described spiral case (8) inside.
7. wind pipe machine blast device according to claim 6 is characterized in that, fixedlys connected with described axle sleeve (6) in the inside that an end of described rotating shaft (10) penetrates described first vane group (4).
8. wind pipe machine blast device according to claim 6 is characterized in that, comprises plural spiral case (8), and each described spiral case (8) inside is equipped with described asymmetric centrifuge (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102130096A CN103267022A (en) | 2013-05-31 | 2013-05-31 | Asymmetric centrifugal fan and ducted air conditioning unit air supplying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102130096A CN103267022A (en) | 2013-05-31 | 2013-05-31 | Asymmetric centrifugal fan and ducted air conditioning unit air supplying device |
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| CN103267022A true CN103267022A (en) | 2013-08-28 |
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| CN2013102130096A Pending CN103267022A (en) | 2013-05-31 | 2013-05-31 | Asymmetric centrifugal fan and ducted air conditioning unit air supplying device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016005552A1 (en) * | 2016-05-09 | 2017-11-09 | Stiebel Eltron Gmbh & Co. Kg | Electric fan heater |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201071831Y (en) * | 2007-06-08 | 2008-06-11 | 杭州奥普卫厨科技有限公司 | Double side wind suction wheel |
| CN101392760A (en) * | 2008-10-31 | 2009-03-25 | 广东美的电器股份有限公司 | Multiple wing centrifugation wind wheel |
| CN201306307Y (en) * | 2008-05-16 | 2009-09-09 | 海尔集团公司 | Centrifugal fan |
| CN202149071U (en) * | 2011-07-17 | 2012-02-22 | 佛山市南海佳科风机制造有限公司 | Air-condition ventilation fan for air-conditioning bus |
| CN301907095S (en) * | 2011-10-25 | 2012-05-09 | 王光能 | Centrifugal wind wheel |
| CN202789708U (en) * | 2012-07-25 | 2013-03-13 | 广东美的暖通设备有限公司 | Centrifugal air impeller, centrifugal fan and air conditioner |
| CN202811428U (en) * | 2012-09-29 | 2013-03-20 | 陈西安 | Multi-blade centrifugal fan |
-
2013
- 2013-05-31 CN CN2013102130096A patent/CN103267022A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201071831Y (en) * | 2007-06-08 | 2008-06-11 | 杭州奥普卫厨科技有限公司 | Double side wind suction wheel |
| CN201306307Y (en) * | 2008-05-16 | 2009-09-09 | 海尔集团公司 | Centrifugal fan |
| CN101392760A (en) * | 2008-10-31 | 2009-03-25 | 广东美的电器股份有限公司 | Multiple wing centrifugation wind wheel |
| CN202149071U (en) * | 2011-07-17 | 2012-02-22 | 佛山市南海佳科风机制造有限公司 | Air-condition ventilation fan for air-conditioning bus |
| CN301907095S (en) * | 2011-10-25 | 2012-05-09 | 王光能 | Centrifugal wind wheel |
| CN202789708U (en) * | 2012-07-25 | 2013-03-13 | 广东美的暖通设备有限公司 | Centrifugal air impeller, centrifugal fan and air conditioner |
| CN202811428U (en) * | 2012-09-29 | 2013-03-20 | 陈西安 | Multi-blade centrifugal fan |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016005552A1 (en) * | 2016-05-09 | 2017-11-09 | Stiebel Eltron Gmbh & Co. Kg | Electric fan heater |
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Application publication date: 20130828 |