CN1321838B - Blower and air conditioning equipment having same - Google Patents
Blower and air conditioning equipment having same Download PDFInfo
- Publication number
- CN1321838B CN1321838B CN01116650.9A CN01116650A CN1321838B CN 1321838 B CN1321838 B CN 1321838B CN 01116650 A CN01116650 A CN 01116650A CN 1321838 B CN1321838 B CN 1321838B
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- CN
- China
- Prior art keywords
- wing
- mentioned
- blade
- trailing edge
- shape
- 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 - Fee Related
Links
- 238000004378 air conditioning Methods 0.000 title claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 14
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000007664 blowing Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
- F04D29/384—Blades characterised by form
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The present invention provides a blower, including a motor and impeller (1) which is driven by a motor. This impeller (1) has a plurality of blades (2) having a thin wing on an outer periphery of a hub (3) at a constant thickness. The blower impeller is constituted such that a front edge (6) of the impeller (2) becomes a convex curved line making a center point of the front edge (6) as a peak against a windward side on the rotation track figure of these blades (2).
Description
Technical field
The present invention relates to the blower that air-conditioning equipment is used, and the air-conditioning equipment that adopts this blower.
Background technique
The diagonal flow type blower of the wing is in the past disclosed in flat No. 11294389 documents of TOHKEMY.
With reference to the accompanying drawings the instance in past is described.
Fig. 7 is the rotating locus figure of the impeller of the diagonal flow type blower in the technology formerly, and Fig. 8 is the planimetric map of this impeller.Fig. 9 is the sectional view radially (along the sectional view of the E-E line of Fig. 8) of this impeller.
On rotating locus figure shown in Figure 7, the leading edge of blade 22 is in periphery 28 1 sides, and upstream side facing the wind forms the curve 26a shape of concavity.In addition, form the curve 26b shape of convex at the blade 22 leading edges upstream side facing the wind of wheel hub 23 1 sides.The border of curve 26a and 26b is near the dot and dash line D-D of the mid point of the mid point of the leading edge that is connected blade 26 and trailing edge 27.In addition, the trailing edge 27 of blade 22 forms rectilinear form from wheel hub 23 1 sides to periphery 28 1 sides.
But as shown in Figure 9, near periphery 28 1 sides that blade 22 is therein are facing to forming concavity curve 29a shape by the main air flow direction shown in the arrow.
The inlet stream of the impeller 21 of diagonal flow type blower is mainly the axial flow of impeller 21.Also has the stream radially " S " that flows into from periphery 28 on a small quantity.Because occupy the concavity curve 29a of part of the wing of half part of pact of blade 22 as relative radial air flow " S ", air-flow S relatively radially turns the formation convex around, so the generation of air-flow " S " is radially counteracted.That is, because the air-flow S that concavity curve 29a faces toward radially forms convex, so can not produce air-flow " S " radially.
Owing to can not produce radial air flow " S ", near the wing shape the wheel hub 23 is unfavorable for promoting pneumatic work done.That is, whole impeller 21 can't carry out pneumatic work done fully.Thus, the static pressure efficiency of impeller 21 may not be high.
Summary of the invention
The present invention be directed to that above-mentioned existing problem proposes, blower of the present invention comprises: motor; Through the impeller that said motor drives, this impeller comprises the blade of the wing that a plurality of thickness on wheel hub that is installed on the said motor and the periphery that is arranged at above-mentioned wheel hub are certain; The leading edge of the blade of the wing that above-mentioned a plurality of thickness is certain is on its rotating locus figure; The upstream side of apparent wind forms near the mid point of its leading edge to be the convex curve shape on summit; The pressure side side of the blade of the wing that above-mentioned a plurality of thickness is certain facing to radial air flow be the concavity curve, the vane trailing edge of the wing that above-mentioned a plurality of thickness are certain on its rotating locus figure, the upstream side of apparent wind; Near the mid point of this trailing edge above-mentioned hub side; Form the convex curve shape, near the outer circumferential side the mid point of this trailing edge forms straight line shape.
In addition, blower of the present invention comprises: motor; Through the impeller that said motor drives, this impeller comprises that a plurality of leading edges on wheel hub that is installed on the said motor and the periphery that is arranged at above-mentioned wheel hub are that circular-arc, trailing edge is the blade of the wing of sharp-pointed wing shape; Be above-mentioned a plurality of leading edges that circular-arc, trailing edge is the stream central part that the center of center and trailing edge of each leading edge of blade of the wing of sharp-pointed wing shape is connected; Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the ratio of each maximum ga(u)ge (t) and chord length (C) of blade of the wing of sharp-pointed wing shape is in the 5-12% scope; Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that each of blade of the wing of sharp-pointed wing shape has the maximum ga(u)ge (t) identical with above-mentioned stream central part crossing over radial direction; Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the leading edge of blade of the wing of sharp-pointed wing shape is on its rotating locus figure; The upstream side of apparent wind; Formation is near the mid point of its leading edge to be the convex curve shape on summit; Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the pressure side side of blade of the wing of sharp-pointed wing shape is the concavity curve facing to radial air flow, above-mentioned a plurality of leading edges be circular-arc, trailing edge be the vane trailing edge of the wing of sharp-pointed wing shape on its rotating locus figure, the upstream side of apparent wind; Near the mid point of this trailing edge above-mentioned hub side; Form the convex curve shape, near the outer circumferential side the mid point of this trailing edge forms straight line shape.
In addition, air-conditioning equipment of the present invention is made up of outdoor unit and indoor set, and above-mentioned outdoor unit comprises heat exchanger and the above-mentioned blower of drying towards above-mentioned heat exchanger.
Description of drawings
Fig. 1 is the schematic representation of the working state of expression the 1st embodiment's of the present invention diagonal flow type blower;
Fig. 2 is the planimetric map of the impeller of above-mentioned diagonal flow type blower;
Fig. 3 is the rotating locus figure of the impeller of above-mentioned diagonal flow type blower;
Fig. 4 is the sectional view along the A-A line of impeller shown in Figure 2;
Fig. 5 is the rotating locus figure of impeller of the 2nd embodiment's of the present invention diagonal flow type blower;
Fig. 6 is the sectional view along the stream center line B-B (or C-C) of the impeller of the 3rd embodiment's of the present invention diagonal flow type blower;
Fig. 7 is the rotating locus figure of the impeller of the diagonal flow type blower in the technology formerly;
Fig. 8 is the planimetric map of above-mentioned impeller;
Fig. 9 is the sectional view of the E-E line of impeller shown in Figure 8.
Embodiment
Through accompanying drawing embodiments of the invention are described below.
(the 1st embodiment)
With reference to Fig. 1～4, the 1st embodiment of the present invention is described below.Fig. 1 is the schematic representation of the operating state of expression the 1st embodiment's of the present invention diagonal flow type blower, and Fig. 2 is the planimetric map of the impeller of above-mentioned diagonal flow type blower.In addition, Fig. 3 is the rotating locus figure of the impeller of above-mentioned diagonal flow type blower, and Fig. 4 is the sectional view radially (being the sectional view along the A-A line of Fig. 2) of the impeller of above-mentioned diagonal flow type blower.
The impeller 1 of diagonal flow type blower is 3 blades 2 that the certain thickness wing is arranged to be integral on the periphery that is arranged on the wheel hub 3 that is round table-like basically form according to a determining deviation.Above-mentioned wheel hub 3 is fixed on the running shaft of motor 4, and impeller 1 is received in the suitable shell 5.Impeller 1 produces inlet stream through motor 4 rotations, realizes blowing effect.
Shown in the arrow as shown in Figure 1, inlet stream has main air flow and radial flow " R ".The major part of inlet stream is a main air flow.Main air flow flows into through the leading edge 6 of blade 2, flows out through trailing edge 7, realizes pneumatic work done.
As shown in Figure 3, the leading edge 6 of blade 2 is on its rotating locus figure, and the upstream side of apparent wind forms the convex curve shape.In addition, this convex curve has the summit near dot and dash line B-B (being also referred to as " stream center line B-B "), and this dot and dash line is connected the center of the leading edge 6 of blade 2 with the center of trailing edge 7.In addition, the trailing edge 7 of blade 2 forms wire on rotating locus figure.
As shown in Figure 4, the suction surface side of blade 2 is a convex curve facing to the upstream side that the main air flow direction of inlet stream forms facing the wind.In addition, because the pressure side side of blade 2 forms the concavity curve facing to radial air flow " R ", so blade 2 can not produce by this radial air flow of obstacle.Therefore since near the blade shape the wheel hub 3 both can both carry out pneumatic work done fully as the main air flow of axial flow and radial air flow " R " relatively, so almost whole blade 2 is carried out pneumatic work done fully.That is, the static pressure efficiency of blower is improved.
Its concrete effect distinguished for; If for the diagonal flow type blower of 415mm experimentizes, then the ratio of the best efficiency point of static pressure efficiency improves about 4% through external diameter
.
(the 2nd embodiment)
Fig. 5 is the rotating locus figure of the 2nd embodiment's of the present invention diagonal flow type blower.In the present embodiment, the shape of trailing edge is different with the 1st embodiment's diagonal flow type blower.In addition structure and the action effect with the 1st embodiment is identical, and identical part adopts identical label.Below main to describing with the 1st embodiment's difference.
The leading edge 6 of blade 2 is on rotating locus figure shown in Figure 5, and upstream side facing the wind forms the convex curve shape.This convex curve has the summit near dot and dash line C-C (being also referred to as " stream center line C-C "), this dot and dash line is connected the center of the leading edge 6 of blade 2 with the center of trailing edge 7.In addition, near wheel hub 3 one sides of the trailing edge 7 of blade 2 stream center line C-C, upstream side facing the wind forms the shape of convex straight line 7a.
Be made for the present embodiment that kind through the shape that makes blade 2, because near wheel hub 3 wing areas of blade 2 are reduced, so the raising of static pressure efficiency is higher than the 1st embodiment.That is, owing to can reduce the surface friction drag of blade, static pressure efficiency improves the fluid noise that can reduce blower more.
Experimental result as the outdoor unit of the air-conditioning equipment that external diameter
is used to have heat exchanger for the diagonal flow type blower of 415mm; Under the action loading point of this outdoor unit, can obtain to reduce the noise result of about 1dB (A).
According to present embodiment, both can improve the static pressure efficiency of blower, can reduce noise again.
(the 3rd embodiment)
Fig. 6 is the 3rd embodiment's of the present invention, the sectional view of the blade of the stream center line B-B of the impeller 1 of diagonal flow type blower (or stream center line C-C).In the present embodiment, the maximum ga(u)ge of blade 12 is set in the particular range with the ratio of chord length C, and this point is different with the 1st embodiment with certain thickness blade or the 2nd embodiment.In addition structure is identical with action effect, and identical part adopts identical label.Mainly different aspect is described below.
The blade 12 of present embodiment is the wing.In addition, as shown in Figure 6, the ratio t/c of the maximum ga(u)ge t of the blade 12 of stream central part and chord length c is set in 5～12% the scope.
According to aforesaid way, blade 12 maximum wing thickness " t " radially keeps certain.That is, at the outer circumferential side of the long blade 12 of string, or hub side, it is certain that its maximum wing thickness " t " all keeps.Thus, when forming the impeller of diagonal flow type blower through resin, the intensity of root of blade can irrespectively keep enough big with its processing method.In addition, form the wing of wing shape owing to adopt, thus air-flow peeling off from the blade 12 can be prevented, thus make the fluid noise reduction.
Concrete effect for the reduction of its fluid noise; If external diameter
is experimentized for the outdoor unit that the diagonal flow type blower of 415mm is used to have the air-conditioning equipment of heat exchanger; Then under the action loading point of outdoor unit, can obtain to reduce the noise result of about 2.5dB (A).Like this, both static pressure efficiency can be improved, noise can be reduced again.
In addition; In describing, on stream center line B-B (or C-C), stipulated the maximum ga(u)ge t of blade 12 and the ratio t/c of chord length c in the above, but also can be at relative stream center line; Leave on the position of certain distance regulation in outer circumferential side or hub side above-mentioned than t/c, can obtain identical in fact effect.
(the 4th embodiment)
The air-conditioning equipment (not shown) of present embodiment for through pipeline with outdoor unit be connected with indoor set split type.Outdoor unit comprises heat exchanger and any blower of in above-mentioned the 1st～3 embodiment of heat exchanger blowing, having described.
If adopt the air-conditioning equipment of said structure, then pass through blower towards the heat exchanger blowing of outdoor unit, outdoor unit can higher static pressure efficiency be operated.Thus, the motor input is reduced, and can under low noise, carry out pneumatic work done.
Claims (3)
1. blower is equipped with:
Motor;
Through the impeller that said motor drives, this impeller comprises the blade of the wing that a plurality of thickness on wheel hub that is installed on the said motor and the periphery that is arranged at above-mentioned wheel hub are certain;
The leading edge of the blade of the wing that above-mentioned a plurality of thickness is certain is on its rotating locus figure; The upstream side of apparent wind forms near the mid point of its leading edge to be the convex curve shape on summit; The pressure side side of the blade of the wing that above-mentioned a plurality of thickness is certain is the concavity curve facing to radial air flow
The vane trailing edge of the wing that above-mentioned a plurality of thickness is certain on its rotating locus figure, the upstream side of apparent wind, near the above-mentioned hub side the mid point of this trailing edge forms the convex curve shape, near the outer circumferential side the mid point of this trailing edge forms straight line shape.
2. blower is equipped with:
Motor;
Through the impeller that said motor drives, this impeller comprises that a plurality of leading edges on wheel hub that is installed on the said motor and the periphery that is arranged at above-mentioned wheel hub are that circular-arc, trailing edge is the blade of the wing of sharp-pointed wing shape;
Be above-mentioned a plurality of leading edges that circular-arc, trailing edge is the stream central part that the center of center and trailing edge of each leading edge of blade of the wing of sharp-pointed wing shape is connected; Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the ratio of each maximum ga(u)ge (t) and chord length (C) of blade of the wing of sharp-pointed wing shape is in the 5-12% scope
Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that each of blade of the wing of sharp-pointed wing shape has the maximum ga(u)ge (t) identical with above-mentioned stream central part crossing over radial direction,
Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the leading edge of blade of the wing of sharp-pointed wing shape is on its rotating locus figure; The upstream side of apparent wind; Formation is near the mid point of its leading edge to be the convex curve shape on summit; Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the pressure side side of blade of the wing of sharp-pointed wing shape is the concavity curve facing to radial air flow
Above-mentioned a plurality of leading edge is that circular-arc, trailing edge is that the vane trailing edge of the wing of sharp-pointed wing shape is on its rotating locus figure; The upstream side of apparent wind, near the above-mentioned hub side the mid point of this trailing edge forms the convex curve shape; Near the mid point of this trailing edge outer circumferential side forms straight line shape.
3. an air-conditioning equipment is made up of outdoor unit and indoor set, it is characterized in that, above-mentioned outdoor unit comprises heat exchanger and the claim 1 or the 2 described blowers of drying towards above-mentioned heat exchanger.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000129122A JP3473549B2 (en) | 2000-04-28 | 2000-04-28 | Blower impeller and air conditioner equipped with the blower impeller |
| JP129122/2000 | 2000-04-28 | ||
| JP129122/00 | 2000-04-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1321838A CN1321838A (en) | 2001-11-14 |
| CN1321838B true CN1321838B (en) | 2012-08-29 |
Family
ID=18638448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01116650.9A Expired - Fee Related CN1321838B (en) | 2000-04-28 | 2001-04-20 | Blower and air conditioning equipment having same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3473549B2 (en) |
| CN (1) | CN1321838B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3960776B2 (en) * | 2001-11-09 | 2007-08-15 | 松下電器産業株式会社 | Blower impeller for air conditioning |
| JP4631563B2 (en) * | 2005-06-29 | 2011-02-16 | パナソニック株式会社 | Blower |
| JP2009275696A (en) * | 2008-04-14 | 2009-11-26 | Panasonic Corp | Propeller fan, and air conditioner using it |
| WO2014162552A1 (en) * | 2013-04-04 | 2014-10-09 | 三菱電機株式会社 | Propeller fan, blower device, and outdoor equipment |
| CN110914553B (en) * | 2017-08-14 | 2021-02-19 | 三菱电机株式会社 | Impeller, blower and air conditioner |
| CN108105156A (en) * | 2017-12-30 | 2018-06-01 | 广东美的厨房电器制造有限公司 | Fan and micro-wave oven |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684324A (en) * | 1985-08-02 | 1987-08-04 | Gate S.P.A. | Axial fan, particularly for motor vehicles |
| CN86102777A (en) * | 1986-04-22 | 1987-11-04 | 杉浦荣市 | The impeller that is used for rotary type fluid machine |
| US4737077A (en) * | 1986-09-12 | 1988-04-12 | Aciers Et Outillage Peugeot | Profiled blade of a fan and its application in motor-driven ventilating devices |
| CN1043770A (en) * | 1988-12-08 | 1990-07-11 | 西屋电气公司 | The method of modifying turbine rotor discs |
| US5588804A (en) * | 1994-11-18 | 1996-12-31 | Itt Automotive Electrical Systems, Inc. | High-lift airfoil with bulbous leading edge |
| CN2256955Y (en) * | 1995-10-17 | 1997-06-25 | 浙江省桐乡市三星保安电器厂 | Bidirectional vane wheel for scavenger fan |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2617904B1 (en) * | 1987-07-09 | 1992-05-22 | Peugeot Aciers Et Outillage | FALCIFORM BLADE FOR PROPELLER AND ITS APPLICATION IN PARTICULAR TO MOTOR FANS FOR AUTOMOBILES |
| JPH10103002A (en) * | 1996-09-30 | 1998-04-21 | Toshiba Corp | Blade for axial flow fluid machine |
| JP3235556B2 (en) * | 1998-01-13 | 2001-12-04 | ダイキン工業株式会社 | Impeller for blower |
| JP3204208B2 (en) * | 1998-04-14 | 2001-09-04 | 松下電器産業株式会社 | Mixed-flow blower impeller |
-
2000
- 2000-04-28 JP JP2000129122A patent/JP3473549B2/en not_active Expired - Fee Related
-
2001
- 2001-04-20 CN CN01116650.9A patent/CN1321838B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4684324A (en) * | 1985-08-02 | 1987-08-04 | Gate S.P.A. | Axial fan, particularly for motor vehicles |
| CN86102777A (en) * | 1986-04-22 | 1987-11-04 | 杉浦荣市 | The impeller that is used for rotary type fluid machine |
| US4737077A (en) * | 1986-09-12 | 1988-04-12 | Aciers Et Outillage Peugeot | Profiled blade of a fan and its application in motor-driven ventilating devices |
| CN1043770A (en) * | 1988-12-08 | 1990-07-11 | 西屋电气公司 | The method of modifying turbine rotor discs |
| US5588804A (en) * | 1994-11-18 | 1996-12-31 | Itt Automotive Electrical Systems, Inc. | High-lift airfoil with bulbous leading edge |
| CN2256955Y (en) * | 1995-10-17 | 1997-06-25 | 浙江省桐乡市三星保安电器厂 | Bidirectional vane wheel for scavenger fan |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3473549B2 (en) | 2003-12-08 |
| CN1321838A (en) | 2001-11-14 |
| JP2001304185A (en) | 2001-10-31 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20140420 |