CN104005997B - Spiral case, centrifugal blower and air-conditioner - Google Patents
Spiral case, centrifugal blower and air-conditioner Download PDFInfo
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- CN104005997B CN104005997B CN201410201448.XA CN201410201448A CN104005997B CN 104005997 B CN104005997 B CN 104005997B CN 201410201448 A CN201410201448 A CN 201410201448A CN 104005997 B CN104005997 B CN 104005997B
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- side plate
- spiral case
- segmental arc
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Abstract
The present invention provides a kind of spiral case, and including side plate and front panel, described side plate is trapped among the edge of described front panel, and described side plate includes the segmental arc side plate being enclosed in fan blade periphery, is along the circumferential direction provided with grid in the inner side of described segmental arc side plate; Described grid one end is fixing end, and the other end of described grid is free end, and the fixing end of described grid is fixed on described segmental arc side plate. The beneficial effects of the present invention is compared with the prior art: the eddy current that the grid in the spiral case of the present invention makes air-flow be formed is refined, air-flow is more smooth and easy in the flowing within spiral case, thus improving the pneumatic efficiency of spiral case, reduces noise. The present invention also provides for a kind of centrifugal blower with above-mentioned spiral case and has the air-conditioner of this centrifugal blower, it is possible to reach same technique effect.
Description
Technical field
The present invention relates to field of air conditioning, particularly relate to the centrifugal blower in a kind of air-conditioner and the spiral case wherein used.
Background technology
Generally, spiral case is the important composition parts of air-conditioner, and performance is had a significant impact, during air-conditioner operating, there is a large amount of disturbances and the vortex of air-flow in spiral case, air-flow forms axial eddy current between blade and spiral case sidewall, almost exists in each angle of impeller. These eddy current are to reduce the pneumatic efficiency of air-conditioner and produce the source of noise, it is suppressed that the generation of these eddy current can promote household air-conditioner.
Summary of the invention
Based on this, it is necessary to provide a kind of and suppress eddy current, the raising spiral case of pneumatic efficiency, centrifugal blower and air-conditioner.
A kind of spiral case, including side plate and front panel, described side plate is trapped among the edge of described front panel, and described side plate includes the segmental arc side plate being enclosed in fan blade periphery, is along the circumferential direction provided with grid in the inner side of described segmental arc side plate; Described grid one end is fixing end, and the other end of described grid is free end, and the fixing end of described grid is fixed on described segmental arc side plate.
As a kind of embodiment, the line between the fixing end of described grid and the free end of described grid overlaps at the normal of described grid with the junction point place of described segmental arc side plate with described segmental arc side plate.
As a kind of embodiment, it is characterised in that line and described segmental arc side plate angle between the normal at described grid and the junction point place of described segmental arc side plate between fixing end and the free end of described grid of described grid are 25 degree to 50 degree.
As a kind of embodiment, described angle is 30 degree or 45 degree.
As a kind of embodiment, described grid at least two, the offset direction of all of described grid is identical with deviation angle, and described offset direction is consistent with the direction of rotation of fan blade.
As a kind of embodiment, described grid entirety is tabular; Described grid is perpendicular to described front panel.
As a kind of embodiment, described grid entirety is arc line shaped, and the camber line angle of described arc line shaped grid is more than 90 degree.
The present invention also provides for a kind of centrifugal blower, including fan blade, and spiral case described above;
Described fan blade is placed in the segmental arc side plate of described spiral case, and the grid of described spiral case is distributed in around described fan blade;
The free end of described grid is near described fan blade.
As a kind of embodiment, the gap between free end and the described fan blade of described grid is be more than or equal to 15mm.
The present invention also provides for a kind of air-conditioner, and including centrifugal blower, described centrifugal blower is above-mentioned centrifugal blower.
The present invention provides a kind of spiral case, and including side plate and front panel, described side plate is trapped among the edge of described front panel, and described side plate includes the segmental arc side plate being enclosed in fan blade periphery, is along the circumferential direction provided with grid in the inner side of described segmental arc side plate; Described grid one end is fixing end, and the other end of described grid is free end, and the fixing end of described grid is fixed on described segmental arc side plate. The beneficial effects of the present invention is compared with the prior art: the eddy current that the grid in the spiral case of the present invention makes air-flow be formed is refined, air-flow is more smooth and easy in the flowing within spiral case, thus improving the pneumatic efficiency of spiral case, reduces noise. The present invention also provides for a kind of centrifugal blower with above-mentioned spiral case and has the air-conditioner of this centrifugal blower, it is possible to reaches same technique effect, does not repeat them here.
Accompanying drawing explanation
Fig. 1 is the overall schematic of the spiral case of the present invention;
Fig. 2 is the schematic front view of an embodiment of the spiral case shown in Fig. 1;
Fig. 3 is the schematic front view of another embodiment of the spiral case shown in Fig. 1;
Fig. 4 is the schematic cross-section of another embodiment of grid.
Detailed description of the invention
For the problem solving pneumatic efficiency and noise, it is proposed that a kind of new spiral case suppresses eddy current, and then reduces noise, promotes household air-conditioner.
Below in conjunction with accompanying drawing, to the present invention, above-mentioned and other technical characteristic and advantage are described in more detail.
Referring to shown in Fig. 1 and Fig. 2, Fig. 1 is the overall schematic of the spiral case of the present invention, and Fig. 2 is the schematic front view of Fig. 1, a kind of spiral case 100, including side plate, front panel 114 and multiple grids 120.
Its latus inframedium is trapped among the edge of front panel 114, general side plate includes segmental arc side plate 110 and straightway side plate 112, grid 120 is fixed on the inner side of segmental arc side plate 110, and grid 120 is arranged along the inwall circumferencial direction of described segmental arc side plate 110, grid 120 is fixed on the inwall of segmental arc side plate by its fixing end simultaneously, the unsettled setting of free end of grid 120. The leaf road that segmental arc side plate is formed is the main through-flow district of air-flow, grid is set at this place and air-flow can be carried out combing, namely grid 120 makes the eddy current that the air-flow of entrance spiral case 100 is formed be refined, big whirlpool is become little snail, make air-flow more smooth and easy in the flowing within spiral case 100, thus improving the pneumatic efficiency of spiral case 100, reducing noise, improve the overall serviceability of spiral case 100.
It is also preferred that the left as a kind of embodiment, the line between the fixing end of grid 120 and the free end of grid 120 overlaps at the normal of described grid 120 with the junction point place of described segmental arc side plate 110 with segmental arc side plate 110. Referring to Fig. 2, for one of them grid 120 in Fig. 2, grid 120 in Fig. 2 is tabular, the cross-section line 121 of its fixing line held between free end and grid, and the normal 111 that segmental arc side plate 110 is in the normal and Fig. 2 at junction point place, cross-section line 121 overlaps with normal 111.Referring to Fig. 4, when grid entirety is arc line shaped, its fixing line held between free end and the line 122 in Fig. 4, when the grid in Fig. 4 is applied to the spiral case in the present embodiment, the line 122 in Fig. 4 overlaps with normal 111.
Preferably, as a kind of embodiment, line and the described segmental arc side plate 110 angle between the normal at described grid 120 and the junction point place of described segmental arc side plate 110 between fixing end and the free end of described grid 120 of grid 120 are 25 degree to 50 degree. Referring to Fig. 3, grid in Fig. 3 is tabular, the then cross-section line 123 of its fixing line held between free end and grid, and the angle theta between cross-section line 123 and normal 111 that segmental arc side plate 110 is in the normal 111, Fig. 3 in the normal and Fig. 2 at junction point place is 25 degree to 50 degree. Same, when the grid in Fig. 4 is applied to the spiral case in the present embodiment, line 122 and the angle theta of normal 111 in Fig. 4 are 25 degree to 50 degree. Junction point in the present embodiment is also the junction point of grid 120 and segmental arc side plate 110.
Generally, the inlet angle change of the fan blade 200 of spiral case 100 is less, is about 85��95 degree; And the excursion of the angle of outlet is relatively big, so air-flow flows out from fan blade 200, enter the speed of spiral case 100, direction scope relatively big, whirlpool that angle theta can make more air-flow be formed is set through grid, and is broken up, is refined as less whirlpool.
It is also preferred that the left as a kind of embodiment, angle theta is 30 degree or 45 degree. Angle theta is 30 degree or 45 degree can make the more whirlpool that effluent air is formed from fan blade through grid, and is broken into more tiny whirlpool by grid.
General, the grid 120 in spiral case should be at least two, and the offset direction of each grid can be identical, it is also possible to different, preferably, the offset direction of all of described grid 120 is identical with deviation angle. So arrange and can make better to be refined by grid through the whirlpool of grid or smash.
It is also preferred that the left as a kind of embodiment, described offset direction is consistent with the direction of rotation of fan blade.
It is also preferred that the left as a kind of embodiment, referring to Fig. 2 or Fig. 3, the profile of grid 120 is flat board, and the platen surface of grid 120 is perpendicular to front panel 114, makes air-flow energy stepless action to grid 120, and air-flow can be produced bigger control action
It is also preferred that the left as a kind of embodiment, referring to Fig. 4, grid entirety is arc line shaped, and the camber line angle a of described arc line shaped grid is more than 90 degree. Grid is set to arc line shaped can make grid better adapt to the flow direction of air-flow, the durability of enhanced grid.
It is also preferred that the left as a kind of embodiment, referring to Fig. 1, the quantity of grid 120 is four, and four grids 120 are evenly distributed on fan blade 130 around. When comprising multiple grid in spiral case, the shape of grid can be identical, it is also possible to different, the deviation angle of each grid can be identical, it is also possible to different.
A kind of centrifugal blower of the present invention, including above-mentioned spiral case 100.
As a kind of embodiment, centrifugal blower also includes fan blade, and fan blade is placed in the segmental arc side plate 110 of spiral case 100.
The grid 120 of spiral case 100 is distributed in around fan blade. One end of grid 120 is connected to the side plate 110 of spiral case 100, and its other end is near fan blade. The arrangement form of grid 120 and fan blade is avoided that grid 120 produces vibration after being subject to the interference of fan blade.
As a kind of embodiment, grid 120 near the gap between one end and fan blade of fan blade be more than or equal to 15mm. It is placed in the grid 120 of diverse location according to the gap between side plate 110 and fan blade, it is possible to be designed as different sizes.
When spiral case 100 runs up, fan blade can tremble, if the gap between fan blade and grid 120 is too small, fan blade and grid 120 can produce to interfere. Gap is minimum for 15mm, can be effectively prevented from interference problem.
In the present embodiment, in the cavity that side plate 110 surrounds, the position near snail tongue 116 arranges a grid 120. Distance between fan blade and snail tongue 116 is less than with the distance of other positions of side plate 110, thus the grid 120 at snail tongue 116 place is for adapting to this distance, size is also correspondingly less.
Furthermore, with the center of fan blade for the center of circle, the circle 200 in the movement locus of a fan blade and Fig. 2 is formed with the radius of gyration of fan blade for radius, junction point between grid 120 and segmental arc side plate is preferably located at the horizontal diameter line by the center of circle and by circular straight vertical radial line, and namely the junction point between grid 120 and segmental arc side plate is the horizontal line by the center of circle and the intersection point with the vertical line of this horizontal line with segmental arc side plate 110. Grid in the present embodiment is four.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention. It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (10)
1. a spiral case, including side plate and front panel, described side plate is trapped among the edge of described front panel, and described side plate includes the segmental arc side plate being enclosed in fan blade periphery, it is characterised in that be along the circumferential direction provided with grid in the inner side of described segmental arc side plate;
Described grid one end is fixing end, and the other end of described grid is free end, and the fixing end of described grid is fixed on described segmental arc side plate.
2. spiral case according to claim 1, it is characterised in that the line between the fixing end of described grid and the free end of described grid overlaps at the normal of described grid with the junction point place of described segmental arc side plate with described segmental arc side plate.
3. spiral case according to claim 1, it is characterized in that, line and described segmental arc side plate angle between the normal at described grid and the junction point place of described segmental arc side plate between fixing end and the free end of described grid of described grid are 25 degree to 50 degree.
4. spiral case according to claim 3, it is characterised in that described angle is 30 degree or 45 degree.
5. spiral case according to claim 3, it is characterised in that described grid at least two, the offset direction of all of described grid is identical with angle, and described offset direction is consistent with the direction of rotation of fan blade.
6. the spiral case according to claim 1 to 5 any one, it is characterised in that described grid entirety is tabular; Described grid is perpendicular to described front panel.
7. the spiral case according to claim 1 to 5 any one, it is characterised in that described grid entirety is arc line shaped, the camber line angle of described arc line shaped grid is more than 90 degree.
8. a centrifugal blower, including fan blade, it is characterised in that include the spiral case described in any one of claim 1 to 7;
Described fan blade is placed in the segmental arc side plate of described spiral case, and the grid of described spiral case is distributed in around described fan blade;
The free end of described grid is near described fan blade.
9. centrifugal blower according to claim 8, it is characterised in that the gap between free end and the described fan blade of described grid is be more than or equal to 15mm.
10. an air-conditioner, including centrifugal blower, it is characterised in that described centrifugal blower is the centrifugal blower described in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201448.XA CN104005997B (en) | 2014-05-13 | 2014-05-13 | Spiral case, centrifugal blower and air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201448.XA CN104005997B (en) | 2014-05-13 | 2014-05-13 | Spiral case, centrifugal blower and air-conditioner |
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| Publication Number | Publication Date |
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| CN104005997A CN104005997A (en) | 2014-08-27 |
| CN104005997B true CN104005997B (en) | 2016-06-08 |
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| CN201410201448.XA Active CN104005997B (en) | 2014-05-13 | 2014-05-13 | Spiral case, centrifugal blower and air-conditioner |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332295A (en) * | 1994-06-03 | 1995-12-22 | Matsushita Seiko Co Ltd | Scroll case for centrifugal fan |
| CN201531460U (en) * | 2009-11-05 | 2010-07-21 | 宁波煜新电器有限公司 | Wind-guiding grid for centrifugal fan |
| CN103244462A (en) * | 2012-02-14 | 2013-08-14 | 珠海格力电器股份有限公司 | Serial-type blade diffuser and production method thereof |
| CN203962481U (en) * | 2014-05-13 | 2014-11-26 | 珠海格力电器股份有限公司 | Spiral case, centrifugal blower and air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060078423A1 (en) * | 2004-10-08 | 2006-04-13 | Nonlinear Tech, Inc. | Bi-directional Blowers for Cooling Laptop Computers |
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2014
- 2014-05-13 CN CN201410201448.XA patent/CN104005997B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07332295A (en) * | 1994-06-03 | 1995-12-22 | Matsushita Seiko Co Ltd | Scroll case for centrifugal fan |
| CN201531460U (en) * | 2009-11-05 | 2010-07-21 | 宁波煜新电器有限公司 | Wind-guiding grid for centrifugal fan |
| CN103244462A (en) * | 2012-02-14 | 2013-08-14 | 珠海格力电器股份有限公司 | Serial-type blade diffuser and production method thereof |
| CN203962481U (en) * | 2014-05-13 | 2014-11-26 | 珠海格力电器股份有限公司 | Spiral case, centrifugal blower and air conditioner |
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| CN104005997A (en) | 2014-08-27 |
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