CN203867968U - Backward centrifugal fan blade, centrifugal fan and courtyard type air conditioning unit - Google Patents
Backward centrifugal fan blade, centrifugal fan and courtyard type air conditioning unit Download PDFInfo
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- CN203867968U CN203867968U CN201420311201.9U CN201420311201U CN203867968U CN 203867968 U CN203867968 U CN 203867968U CN 201420311201 U CN201420311201 U CN 201420311201U CN 203867968 U CN203867968 U CN 203867968U
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 15
- 238000005119 centrifugation Methods 0.000 claims abstract description 56
- 238000013461 design Methods 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000010355 oscillation Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a to type centrifugation fan blade, centrifugal fan and courtyard formula air conditioning unit. Backward type centrifugation fan blade includes: an annular base plate; the circumferential edge of the hub is connected with the inner side edge of the annular bottom plate; the annular bottom plate and the air inlet ring are arranged concentrically and at intervals, an air inlet is formed in the inner ring side of the air inlet ring, an air outlet is formed between the circumferential edge of the annular bottom plate and the outer ring side edge of the air inlet ring, and the ratio A of the thickness H1 of the air inlet ring to the height H2 of the air outlet is [0.25, 1 ]; the blade, the blade is a plurality of, and a plurality of blades set up between annular bottom plate and air inlet ring along the circumference of air inlet ring, and the outside end of a plurality of blades forms the blade excircle, and the medial extremity of a plurality of blades forms the blade interior circle. The utility model provides a centrifugal fan blade can effectively reduce the running noise, has the advantage that uses small in noise.
Description
Technical field
The utility model relates to air conditioner technical field, more specifically, relates to a kind of backward type centrifugation blade, centrifugal blower and uphill opening type air-conditioning unit.
Background technique
Backward type centrifugation blade is mainly used in the centrifugal blower of uphill opening type air-conditioning unit.Model utility people finds with experiment after deliberation, the existing centrifugation blade problem that ubiquity Oscillation Amplitude is large in use, noise is large, thus not only affect working life of centrifugation blade, also have a strong impact on the end product quality of uphill opening type air-conditioning unit.
Model utility content
The utility model aims to provide a kind of backward type centrifugation blade, centrifugal blower and uphill opening type air-conditioning unit, has to solve centrifugation blade of the prior art the problem that Oscillation Amplitude is large, noise is large.
For solving the problems of the technologies described above, according to an aspect of the present utility model, provide a kind of backward type centrifugation blade, comprising: annular bottom plate; Wheel hub, the circumferential edge of wheel hub is connected with the inside edge of annular bottom plate; Air supplying ring, annular bottom plate is concentric and setting at intervals with air supplying ring, and the interior ring side of air supplying ring forms intake grill, between the outer rim side edge of the circumferential edge of annular bottom plate and air supplying ring, forms air port, the ratio A of the thickness H1 of air supplying ring and the height H 2 of exhaust outlet is A=[0.25,1]; Blade, blade is multiple, and multiple blades are circumferentially arranged between annular bottom plate and air supplying ring along air supplying ring, and the outboard end of multiple blades forms blade cylindrical, and the medial extremity of multiple blades forms blade inner circle.
Further, the interior circular diameter B of annular bottom plate is B=[280,310] and millimeter, the outside diameter C of annular bottom plate is C=[420,490] and millimeter, the height H 2 of exhaust outlet is H2=[90,120] millimeter, the outer rim side diameter E of air supplying ring is E=[420,490] millimeter, the interior ring side diameter F of air supplying ring is F=[370,400] and millimeter, the height G of wheel hub is G=[100,150] millimeter, blade outside diameter D is D=[420,490] millimeter, in blade, circular diameter I is I=[300,340] and millimeter.
Further, the interior circular diameter B of annular bottom plate is 296 millimeters, the outside diameter C of annular bottom plate is 476 millimeters, the height H 2 of exhaust outlet is 101 millimeters, the outer rim side diameter E of air supplying ring is 476 millimeters, and the interior ring side diameter F of air supplying ring is 380 millimeters, and the height G of wheel hub is 130 millimeters, blade outside diameter D is 476 millimeters, and in blade, circular diameter I is 320 millimeters.
Further, the number of multiple blades is 7.
Further, the height J of the outboard end of blade is J=[90,120] millimeter, the height K of the medial extremity of blade is K=[125,145] millimeter, the length L of first side being connected with annular bottom plate of blade is L=[120,130] millimeter, the length M of the second side of the close air supplying ring of blade is M=[150,160] and millimeter.
Further, the height J of the outboard end of blade is 101 millimeters, and the height K of the medial extremity of blade is 135 millimeters, and the length L of first side being connected with annular bottom plate of blade is 124 millimeters, and the length M of the second side of the close air supplying ring of blade is 154 millimeters.
Further, a part for the second side of the close air supplying ring of blade is stretched out by the surface away from annular bottom plate one side of air supplying ring.
According to an aspect of the present utility model, a kind of centrifugal blower is provided, comprise centrifugation blade, centrifugation blade is above-mentioned centrifugation blade.
According to an aspect of the present utility model, a kind of uphill opening type air-conditioning unit is provided, comprise centrifugal blower, centrifugal blower is above-mentioned centrifugal blower.
The circumferential edge of the wheel hub in the utility model is connected with the inside edge of annular bottom plate, annular bottom plate is concentric and setting at intervals with air supplying ring, the interior ring side of air supplying ring forms intake grill, between the outer rim side edge of the circumferential edge of annular bottom plate and air supplying ring, form air port, the ratio A of the thickness of air supplying ring and the height of exhaust outlet is [0.25,1], blade is multiple, multiple blades are circumferentially arranged between annular bottom plate and air supplying ring along air supplying ring, the outboard end of multiple blades forms blade cylindrical, and the medial extremity of multiple blades forms blade inner circle.Because the ratio A of the thickness of air supplying ring and the height of exhaust outlet is set to [0.25,1], thereby changed the structural parameter of centrifugation blade, our experiments show that simultaneously, this kind of centrifugation blade can effectively reduce running noises, has advantages of that the noise of use is little.Meanwhile, the centrifugation blade in the utility model has feature simple in structure, low cost of manufacture.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 has schematically shown the stereogram of the centrifugation blade in the utility model;
Fig. 2 has schematically shown the plan view of Fig. 1; And
Fig. 3 has schematically shown the plan view of Fig. 2.
Reference character in figure: 10, annular bottom plate; 20, wheel hub; 21, radiation hole; 22, axis hole; 30, air supplying ring; 31, intake grill; 40, exhaust outlet; 50, blade.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
As first aspect of the present utility model, provide a kind of backward type centrifugation blade.As shown in Figure 1 to Figure 3, backward type centrifugation blade comprises annular bottom plate 10, wheel hub 20, air supplying ring 30 and blade 50, and the circumferential edge of wheel hub 20 is connected with the inside edge of annular bottom plate 10; Annular bottom plate 10 is concentric and setting at intervals with air supplying ring 30, the interior ring side of air supplying ring 30 forms intake grill 31, between the outer rim side edge of the circumferential edge of annular bottom plate 10 and air supplying ring 30, form air port 40, the ratio A of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40 is [0.25,1]; Blade 50 is multiple, and multiple blades 50 are circumferentially arranged between annular bottom plate 10 and air supplying ring 30 along air supplying ring 30, and the outboard end of multiple blades 50 forms blade cylindrical, and the medial extremity of multiple blades 50 forms blade inner circle.Because the ratio A of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40 is set to [0.25,1], thereby changed the structural parameter of centrifugation blade, our experiments show that simultaneously, this kind of centrifugation blade can effectively reduce running noises, has advantages of that the noise of use is little.Meanwhile, the centrifugation blade in the utility model has feature simple in structure, low cost of manufacture.
Preferably, the number of multiple blades 50 is odd number.Further, the number of multiple blades 50 is 7.
As shown in Figure 1 to Figure 3, a part for the second side of the close air supplying ring 30 of blade 50 is stretched out by the surface away from annular bottom plate 10 1 sides of air supplying ring 30.Because a part for the second side of the close air supplying ring 30 of blade 50 is stretched out by the surface away from annular bottom plate 10 1 sides of air supplying ring 30, thereby increase the connection area of blade 50 and air supplying ring 30, thereby ensure the join strength of the two joint, and then extended the working life of centrifugation blade.
Wheel hub 20 in the utility model has radiation hole 21 and axis hole 22, and axis hole 22 is positioned at the center of wheel hub 20, and radiation hole 21 is multiple, and multiple radiation holes 21 are along the outside (please refer to Fig. 1 to Fig. 3) that is circumferentially positioned at axis hole 22.Preferably, radiation hole 21 is six.Owing to being provided with radiation hole 21, thus the hot air of wheel hub 20 inner sides can be by radiation hole 21 overflows to centrifugation blade one side and after be discharged from through exhaust outlet 40, thereby improved the operating reliability of centrifugation blade, extended the working life of centrifugation blade.
As second aspect of the present utility model, provide a kind of centrifugal blower.Centrifugal blower comprises centrifugation blade, and centrifugation blade is above-mentioned centrifugation blade.Because the centrifugation blade in the utility model has air output greatly and the feature of running noises, thereby effectively reduce centrifugal blower running noises, reduced the Oscillation Amplitude of centrifugal blower, thereby improved centrifugal blower operational reliability, extended working life of centrifugal blower.
As the 3rd aspect of the present utility model, provide a kind of uphill opening type air-conditioning unit.Uphill opening type air-conditioning unit comprises centrifugal blower, and centrifugal blower is above-mentioned centrifugal blower.Because the centrifugal blower in the utility model has, running noises is little, Oscillation Amplitude is little, thereby has ensured uphill opening type air-conditioning unit operational reliability, has improved the end product quality of uphill opening type air-conditioning unit.
In the time that uphill opening type air-conditioning unit enters stable state, the rotating speed of centrifugation blade is 700 rpms.Centrifugation blade in the utility model particularly has good operation stability, noise is little, Oscillation Amplitude is little feature in the time that rotating speed is 700 rpms.
Preferably, the design parameter scope of centrifugation blade is as follows: the interior circular diameter B of annular bottom plate 10 is B=[280,310] millimeter, the outside diameter C of annular bottom plate 10 is C=[420,490] millimeter, the height H 2 of exhaust outlet 40 is H2=[90,120] millimeter, the outer rim side diameter E of air supplying ring 30 is E=[420,490] millimeter, the interior ring side diameter F of air supplying ring 30 is F=[370,400] millimeter, the height G of wheel hub 20 is G=[100,150] millimeter, blade outside diameter D is D=[420,490] millimeter, in blade, circular diameter I is I=[300,340] and millimeter.Further preferably, the interior circular diameter B of annular bottom plate 10 is 296 millimeters, the outside diameter C of annular bottom plate 10 is 476 millimeters, the height H 2 of exhaust outlet 40 is 101 millimeters, the outer rim side diameter E of air supplying ring 30 is 476 millimeters, and the interior ring side diameter F of air supplying ring 30 is 380 millimeters, and the height G of wheel hub 20 is 130 millimeters, blade 50 outside diameter D are 476 millimeters, and the interior circular diameter I of blade 50 is 320 millimeters.
Preferably, the design parameter scope of the blade 50 in centrifugation blade is as follows: the height J of the outboard end of blade 50 is J=[90,120] millimeter, the height K of the medial extremity of blade 50 is K=[125,145] millimeter, the length L of first side being connected with annular bottom plate 10 of blade 50 is L=[120,130] millimeter, the length M of the second side of the close air supplying ring 30 of blade 50 is M=[150,160] and millimeter.Further preferably, the height J of the outboard end of blade 50 is 101 millimeters, the height K of the medial extremity of blade 50 is 135 millimeters, and the length L of first side being connected with annular bottom plate 10 of blade 50 is 124 millimeters, and the length M of the second side of the close air supplying ring 30 of blade 50 is 154 millimeters.
For preferred embodiment above-mentioned, by noise experiment, the centrifugation blade of different size is tested.Test result is as shown in table 1.When test, the rotating speed of centrifugation blade is 700 rpms.
Table 1: the centrifugation blade of different size is carried out to noise testing
Show according to the experimental result of comparative example 1 and comparative example 4: when the ratio of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40 is not within preferable range, and the design parameter of centrifugation blade is not also within preferable range time, the running noises of the centrifugation blade that test obtains is larger, is respectively 49.6 decibels and 49 decibels.
Show according to the experimental result of comparative example 2 and comparative example 3: when the ratio of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40 is not within preferable range, and the design parameter of centrifugation blade is within preferable range time, the running noises of the centrifugation blade that test obtains reduces, and is respectively 49.4 decibels and 48.8 decibels.
Show according to embodiment 1 and embodiment's 3 experimental result: when the ratio of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40 is within preferable range, and the design parameter of centrifugation blade is also within preferable range time, the running noises of the centrifugation blade that test obtains reduces, and is down to 48.4 decibels.
Show according to embodiment 2 experimental result: when the ratio of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40 is within preferable range and near intermediate value, when simultaneously the design parameter of centrifugation blade is also within preferable range and near intermediate value, the running noises of the centrifugation blade that test obtains reduces again, is down to 48.1 decibels.
In sum, can effectively reduce the running noises of centrifugation blade by changing the ratio of the thickness H1 of air supplying ring 30 and the height H 2 of exhaust outlet 40, can be by 1 decibel to 1.5 decibels of reducing noise in the case of the design parameter of centrifugal blower is constant, thus operational reliability and the functional reliability of centrifugal blower and uphill opening type air-conditioning unit improved.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. a backward type centrifugation blade, is characterized in that, comprising:
Annular bottom plate (10);
Wheel hub (20), the circumferential edge of described wheel hub (20) is connected with the inside edge of described annular bottom plate (10);
Air supplying ring (30), described annular bottom plate (10) is concentric and setting at intervals with described air supplying ring (30), the interior ring side of described air supplying ring (30) forms intake grill (31), between the outer rim side edge of the circumferential edge of described annular bottom plate (10) and described air supplying ring (30), form air port (40), the ratio A of the height H 2 of the thickness H1 of described air supplying ring (30) and described exhaust outlet (40) is A=[0.25,1];
Blade (50), described blade (50) is multiple, multiple described blades (50) are circumferentially arranged between described annular bottom plate (10) and described air supplying ring (30) along described air supplying ring (30), the outboard end of described multiple blade (50) forms blade cylindrical, and the medial extremity of described multiple blades (50) forms blade inner circle.
2. backward type centrifugation blade according to claim 1, it is characterized in that, the interior circular diameter B of described annular bottom plate (10) is B=[280, 310] millimeter, the outside diameter C of described annular bottom plate (10) is C=[420, 490] millimeter, the height H 2 of described exhaust outlet (40) is H2=[90, 120] millimeter, the outer rim side diameter E of described air supplying ring (30) is E=[420, 490] millimeter, the interior ring side diameter F of described air supplying ring (30) is F=[370, 400] millimeter, the height G of described wheel hub (20) is G=[100, 150] millimeter, described blade outside diameter D is D=[420, 490] millimeter, in described blade, circular diameter I is I=[300, 340] millimeter.
3. backward type centrifugation blade according to claim 2, it is characterized in that, the interior circular diameter B of described annular bottom plate (10) is 296 millimeters, the outside diameter C of described annular bottom plate (10) is 476 millimeters, the height H 2 of described exhaust outlet (40) is 101 millimeters, the outer rim side diameter E of described air supplying ring (30) is 476 millimeters, the interior ring side diameter F of described air supplying ring (30) is 380 millimeters, the height G of described wheel hub (20) is 130 millimeters, described blade (50) outside diameter D is 476 millimeters, the interior circular diameter I of described blade (50) is 320 millimeters.
4. backward type centrifugation blade according to claim 1, is characterized in that, the number of described multiple blades (50) is 7.
5. backward type centrifugation blade according to claim 4, it is characterized in that, the height J of the outboard end of described blade (50) is J=[90,120] millimeter, the height K of the medial extremity of described blade (50) is K=[125,145] millimeter, the length L of first side being connected with annular bottom plate (10) of described blade (50) is L=[120,130] millimeter, the length M of the second side of the close described air supplying ring (30) of described blade (50) is M=[150,160] and millimeter.
6. backward type centrifugation blade according to claim 5, it is characterized in that, the height J of the outboard end of described blade (50) is 101 millimeters, the height K of the medial extremity of described blade (50) is 135 millimeters, the length L of first side being connected with annular bottom plate (10) of described blade (50) is 124 millimeters, and the length M of the second side of the close described air supplying ring (30) of described blade (50) is 154 millimeters.
7. backward type centrifugation blade according to claim 1, it is characterized in that, a part for the second side of the close described air supplying ring (30) of described blade (50) is stretched out by the surface away from described annular bottom plate (10) one sides of described air supplying ring (30).
8. a centrifugal blower, comprises centrifugation blade, it is characterized in that, described centrifugation blade is the centrifugation blade described in any one in claim 1 to 7.
9. a uphill opening type air-conditioning unit, comprises centrifugal blower, it is characterized in that, described centrifugal blower is centrifugal blower claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311201.9U CN203867968U (en) | 2014-06-11 | 2014-06-11 | Backward centrifugal fan blade, centrifugal fan and courtyard type air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311201.9U CN203867968U (en) | 2014-06-11 | 2014-06-11 | Backward centrifugal fan blade, centrifugal fan and courtyard type air conditioning unit |
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| Publication Number | Publication Date |
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| CN203867968U true CN203867968U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311201.9U Expired - Lifetime CN203867968U (en) | 2014-06-11 | 2014-06-11 | Backward centrifugal fan blade, centrifugal fan and courtyard type air conditioning unit |
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| CN (1) | CN203867968U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837862A (en) * | 2017-03-24 | 2017-06-13 | 合肥天鹅制冷科技有限公司 | For the centrifugal blower of air-conditioning equipment air-supply |
| CN108317092A (en) * | 2018-02-02 | 2018-07-24 | 天津快透平科技发展有限公司 | Impeller and centrifugal compressor including the impeller |
-
2014
- 2014-06-11 CN CN201420311201.9U patent/CN203867968U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106837862A (en) * | 2017-03-24 | 2017-06-13 | 合肥天鹅制冷科技有限公司 | For the centrifugal blower of air-conditioning equipment air-supply |
| CN108317092A (en) * | 2018-02-02 | 2018-07-24 | 天津快透平科技发展有限公司 | Impeller and centrifugal compressor including the impeller |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |
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| CX01 | Expiry of patent term |