CN1846560A - Hair dryer - Google Patents
Hair dryer Download PDFInfo
- Publication number
- CN1846560A CN1846560A CNA2006100676486A CN200610067648A CN1846560A CN 1846560 A CN1846560 A CN 1846560A CN A2006100676486 A CNA2006100676486 A CN A2006100676486A CN 200610067648 A CN200610067648 A CN 200610067648A CN 1846560 A CN1846560 A CN 1846560A
- Authority
- CN
- China
- Prior art keywords
- fan
- tunnel
- wind
- dryer
- hair
- 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.)
- Granted
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
Abstract
A hair dryer (1) comprises a housing (2) having a substantially cylindrical air tunnel (3), a fan (6) provided in the air tunnel (3), a motor (7) for revolving the fan (6), and a heater (5). The fan (6) is a centrifugal fan having a revolution shaft (61), a circular disc (62) perpendicular to the revolution shaft (61), and a plurality of impeller blades (63) each provided substantially perpendicular to the circular disc (62) but curved with respect to a radial line passing the center axis of the revolution shaft (61). The outer diameter D1 of the fan (6) and the inner diameter D2 of the outlet (9) of airflow of the air tunnel (3) are selected so that the value D1/D2 in the region equal to or larger than 1.0 and equal to or smaller than 1.45, (1.0<=D1/D2<=1.45). Thereby, the hair dryer (1) can generate strong airflow with a constant volume without increasing rotation number of the motor (7) and without enlarging the outer diameter of the fan (6) by reducing the pressure loss due to the air tunnel.
Description
Technical field
The present invention relates to a kind of structure of fan and wind-tunnel (air tunnel) of hair-dryer.
Background technology
At big capacity hair-dryer, for example specialty is with in the hair-dryer, and expectation produces strong air-flow by the sectional area that dwindles air stream outlet usually.But when the sectional area of air stream outlet diminished, it is big that the pressure loss in the gas channel becomes, and therefore must improve the power output of fan.Under the bigger situation of this pressure loss, use usually as disclosed centrifugal fan in Japanese laid-open patent communique No.2001-204537.
As mentioned above, when the sectional area of air-supply outlet diminished, the pressure loss increased, the therefore necessary external diameter that improves the revolution of motor or increase fan.But when the revolution of motor improves or the external diameter of fan when increasing, the load that will cause being applied to motor increases, so the increase of the raising of motor revolution or fan external diameter is limited.Therefore, a kind of wind-tunnel with lower pressure loss of desired design is to guarantee that throughput is constant under situation about not increasing the load of motor.
Summary of the invention
The purpose of this invention is to provide a kind of hair-dryer, this blowing function does not increase again at the revolution that neither improves motor under the situation of external diameter of fan, by reducing the air blast that the pressure loss in the wind-tunnel produces constant flow rate.
Hair-dryer according to a scheme of the present invention comprises: shell, and it has the wind-tunnel of approximate tubular; Fan, it is arranged in this wind-tunnel; Motor, it is used to rotate this fan; And heater.This fan is a centrifugal fan, and it has: rotating shaft; Disk, it is set to the central axis approximately perpendicular to this rotating shaft; And a plurality of impeller blades, each described impeller blade all is set to approximately perpendicular to this disk, and with respect to RADIAL (radial line) bending through the central axis of this rotating shaft.When the external diameter of this fan is represented by symbol D1, and the internal diameter of the air stream outlet of the wind-tunnel of this shell is when being represented by symbol D2, the value of D1/D2 more than or equal to 1.0 and smaller or equal to 1.45 scope in (1.0≤D1/D2≤1.45).
And, be preferably when representing by symbol D3 around the internal diameter of this wind-tunnel of this fan, the value of D1/D3 more than or equal to 0.6 and smaller or equal to 0.75 scope in (0.6≤D1/D3≤0.75).
When the outer diameter D 1 of fan increased (or D1/D2 increases), by the once rotation institute amount of air drawn increase of fan, thereby throughput increased.But, when in the wind-tunnel of shell from around the fan to the degree of shrinkage (narrowing ratio) of the gas channel of air stream outlet when becoming big, the pressure loss in the wind-tunnel increases.Therefore, even do the outer diameter D 1 of fan very big, neither be very effective, therefore be preferably the value of D1/D2 smaller or equal to 1.45.And, when the outer diameter D 1 of fan during, will produce the pressure loss owing to the expansion of the gas channel in the wind-tunnel less than the inside diameter D 2 (that is, D1/D2＜1.0) of air stream outlet.Therefore, be preferably the value of D1/D2 more than or equal to 1.0.As mentioned above, the inside diameter D 2 of the air stream outlet of the outer diameter D 1 by selecting fan and the wind-tunnel of shell, the value that makes D1/D2 more than or equal to 1.0 and smaller or equal to 1.45 scope in, even then when using fan identical and motor, also can increase the throughput of hair-dryer by the pressure loss in the reduction wind-tunnel with conventional dryers.
When increasing, in other words, when the value of D1/D3 reduces, then be difficult on the direction of the rotating shaft that is parallel to fan, produce air-flow when the outer diameter D 1 of fan and around the gap between the inside diameter D 3 of the wind-tunnel of this fan.When the value of D1/D3 less than 0.6 the time, the maximum efficiency value of fan reduces suddenly.On the contrary, when reducing, in other words, when the value of D1/D3 improves, then be difficult to utilize the centrifugal force of fan 6, thereby the maximum efficiency value of fan reduces when the outer diameter D 1 of fan 6 and around the gap between the inside diameter D 3 of the wind-tunnel of this fan 6.When the value of D1/D3 greater than 0.75 the time, the maximum efficiency value of fan reduces suddenly.As mentioned above, outer diameter D 1 by selecting fan and around the inside diameter D 3 of the wind-tunnel of the shell of this fan, the value that makes D1/D3 more than or equal to 0.6 and smaller or equal to 0.75 scope in, even then when using fan identical and motor, also can maximize the efficient (output of the output/motor of fan) of fan with conventional dryers.
Description of drawings
Fig. 1 shows the sectional view of hair-dryer structure according to an embodiment of the invention;
Fig. 2 shows the front view of fan structure on the hair-dryer;
Fig. 3 shows the ratio D1/D2 of inside diameter D 2 of air stream outlet of the external diameter of fan and wind-tunnel and the graph of a relation between the pressure loss;
Fig. 4 shows the lexical or textual analysis figure of the pressure loss in the hair-dryer;
Fig. 5 shows the outer diameter D 1 of fan and around the graph of a relation between the peak efficiency of the ratio D1/D3 of the inside diameter D 3 of the wind-tunnel of this fan and fan.
The specific embodiment
With reference to accompanying drawing hair-dryer according to an embodiment of the invention is described.Fig. 1 shows the structure according to the hair-dryer 1 of this embodiment.The shell 2 of hair-dryer 1 comprises the wind-tunnel 3 of approximate tubular, and approximately perpendicular to the handle 4 of this wind-tunnel 3.The motor 7 that hair-dryer 1 also comprises heater 5, the fan 6 that is arranged on wind-tunnel 3 inside and is used for drive fan 6 rotations, the air flow inlet 8 and the air stream outlet 9 that are connected to wind-tunnel 3 enter the grid of wind-tunnel 3 (grid) 10 and 11 to prevent foreign matter, be arranged on the console switch 12 on the handle 4, and the nozzle 13 that removably is connected to air stream outlet 9.Fan 6 is arranged near the part place of air flow inlet 8.
Fig. 2 shows the shape of the fan of seeing from the front 6.Fan 6 is centrifugal fans, and it is used under the bigger situation of the pressure loss usually.This fan 6 comprises: rotating shaft 61; Disk 62, it is set to the central axis approximately perpendicular to rotating shaft 61; And a plurality of impeller blades 63, each impeller blade 63 is all approximately perpendicular to this disk 62, and with respect to through the RADIAL of the central axis of rotating shaft 61 with the predetermined direction bending.As shown in Figure 1, disk 62 can be from rotating shaft 61 to disk 62 periphery tilt gradually towards the downstream of gas channel.As for two adjacent impeller blades 63, can find that these two impeller blades 63 form the interval that makes between them from broadening gradually near the inside part of rotating shaft 61 periphery to disk 62.
Fig. 3 shows the graph of a relation between the pressure loss of the ratio D1/D2 of inside diameter D 2 of air stream outlet 9 of wind-tunnel 3 of the external diameter of fan 6 and shell 2 and hair-dryer.In Fig. 3, abscissa is represented the value of ratio D1/D2 of the inside diameter D 2 of the external diameter of fan 6 and air stream outlet 9, and ordinate is represented the value of the pressure loss of hair-dryer.The inside diameter D 2 of air stream outlet 9 is not that expression is included in the internal diameter such as heater 5 grades in the shell 2, but is illustrated under the state that does not connect nozzle 13 internal diameter as the shell 2 of air stream outlet 9.In addition, the outer diameter D 1 of fan is not the diameter of expression disk 61, but the diameter of the outermost part of expression impeller blade 63.
As can be seen from Figure 3, when the value of ratio D1/D2 between 1.0 between 1.45 the time, the pressure loss of hair-dryer is a minimum of a value, when the value of ratio D1/D2 less than 1.0 or greater than 1.45 the time, the pressure loss of hair-dryer demonstrates the trend of increase.Revolution at hypothesis motor 7 is under the constant situation, when the outer diameter D 1 of fan 6 increases (or ratio D1/D2 improves), increased by the once rotation institute amount of air drawn of fan 6, thereby throughput increases.But, when in the wind-tunnel 3 of shell 2 from around the fan 6 to the degree of shrinkage of the gas channel of air stream outlet 9 when excessive, the pressure loss in the wind-tunnel 3 increases.Therefore, even do the outer diameter D 1 of fan 6 very big, neither be very effective.In addition, when the outer diameter D 1 of fan 6 during, will produce the pressure loss owing to the expansion of the gas channel in the wind-tunnel 3 than the inside diameter D 2 little (that is, D1/D2＜1.0) of air stream outlet 9.Thereby, the inside diameter D 2 of the air stream outlet 9 of the outer diameter D 1 by selecting fan 6 and the wind-tunnel 3 of shell 2, the value that makes D1/D2 is more than or equal to 1.0 and smaller or equal to 1.45, even then when using fan 6 identical and motor 7, also can increase the throughput of hair-dryer 1 by the pressure loss in the reduction wind-tunnel 3 with conventional dryers.
Fig. 4 shows the lexical or textual analysis figure of the pressure loss of hair-dryer.In Fig. 4, abscissa is represented the value of once rotating the throughput that is produced by fan, and ordinate is represented the value of stream pressure.The characteristic curve of being represented by symbol PQ shows windage (PQ) characteristic of the fan that shows fan performance.As can be seen, throughput is big more from the PQ characteristic curve, and then pressure falls lowly more.On the other hand, the characteristic curve of being represented by symbol PL shows the expression throughput and by wind-tunnel and be included in the pressure loss characteristic curve that concerns between the pressure loss that inner matter produced in the wind-tunnel.Usually, throughput is big more, and then the pressure loss increases manyly more.PQ characteristic curve and the characteristic intersection point P of the pressure loss are corresponding with the pressure loss of hair-dryer as mentioned herein.If because the pressure loss that wind-tunnel and inner matter thereof produced reduces, then the characteristic inclination of the pressure loss slows down, thereby the characteristic intersection point P of the PQ characteristic curve and the pressure loss moves right in the drawings, so the force value at intersection point P place descends the throughput increase.
Then, Fig. 5 shows the outer diameter D 1 of fan 6 and around the graph of a relation between the peak efficiency of the ratio D1/D3 of the inside diameter D 3 of the wind-tunnel 3 of this fan 6 and fan.As can be seen from Figure 5, the value of ratio D1/D3 has maximum near 0.6, and when the value of ratio D1/D3 less than 0.6 or greater than 0.75 the time, the maximum efficiency value of fan reduces suddenly.The reason that produces this phenomenon is as described below.When becoming big, in other words, when the value of ratio D1/D3 reduces, then be difficult on the axis direction that is parallel to rotating shaft 61, produce air-flow when the outer diameter D 1 of fan 6 and around the gap between the inside diameter D 3 of the wind-tunnel of this fan 6.Selectively, during when the outer diameter D 1 of fan 6 and around the gap smaller between the inside diameter D 3 of the wind-tunnel of this fan 6, in other words, when the value of ratio D1/D3 improves, then can not make full use of the centrifugal force of fan 6, thereby reduce the efficient of fan.Therefore, outer diameter D 1 by selecting fan 6 and around the inside diameter D 3 of the wind-tunnel 3 of the shell 2 of this fan 6, the value that makes D1/D3 more than or equal to 0.6 and smaller or equal to 0.75 scope in, even then when using fan 6 identical and motor 7, also can maximize the efficient (output of the output/motor of fan) of fan with conventional dryers.
As mentioned above, when the inside diameter D 2 with the air stream outlet 9 of the wind-tunnel 3 of the outer diameter D 1 of fan 6 and shell 2 be chosen as the value that makes D1/D2 more than or equal to 1.0 and smaller or equal to 1.45 scope in the time, make the performance of fan identical although then use fan 6 identical and motor 7, also can improve the throughput that produces by hair-dryer 1 by the pressure loss that reduces in the wind-tunnel 3 with conventional dryers.And, when be chosen as with the outer diameter D 1 of fan 6 with around the inside diameter D 3 of the wind-tunnel 3 of the shell 2 of this fan 6 value that makes D1/D3 more than or equal to 0.6 and smaller or equal to 0.75 scope in the time, make the performance of fan identical although use, also can maximize the efficient (output of the output/motor of fan) of fan with the identical fan 6 of conventional dryers and motor 7.Therefore, can provide a kind of like this hair-dryer, this hair-dryer does not increase under the situation of fan external diameter at the revolution that does not improve motor yet, by being reduced the pressure loss by wind-tunnel, thereby produces the air blast of constant flow rate.
Although the example by has with reference to the accompanying drawings carried out sufficient description to the present invention, be understood that those skilled in the art can carry out various variations and remodeling.Therefore, every at the various variations and the remodeling that are carried out without departing from the scope of the invention, all be interpreted as within the scope of the present invention.
Claims (5)
1. hair-dryer, it comprises: shell, it has the wind-tunnel of approximate tubular; Fan, it is arranged in this wind-tunnel; Motor, it is used to rotate this fan; And heater, wherein:
This fan is a centrifugal fan, and it has: rotating shaft; Disk, it is set to the central axis approximately perpendicular to this rotating shaft; And a plurality of impeller blades, each described impeller blade all is set to approximately perpendicular to this disk, and with respect to the RADIAL bending through the central axis of this rotating shaft; And
When the external diameter of this fan is represented by symbol D1, and the internal diameter of the air stream outlet of the wind-tunnel of this shell is when being represented by symbol D2, the value of D1/D2 more than or equal to 1.0 and smaller or equal to 1.45 scope in, i.e. 1.0≤D1/D2≤1.45.
2. hair-dryer as claimed in claim 1, wherein:
When representing by symbol D3 around the internal diameter of the wind-tunnel of this fan, the value of D1/D3 more than or equal to 0.6 and smaller or equal to 0.75 scope in, i.e. 0.6≤D1/D3≤0.75.
3. hair-dryer as claimed in claim 1 or 2, wherein:
The downstream of the outer Zhou Dynasty this gas channel of the disk of this fan from this rotating shaft to this disk tilts gradually.
4. hair-dryer as claimed in claim 1 or 2, wherein:
Adjacent two impeller blades of this fan form the distance that makes between them from broadening gradually near the inside part of this rotating shaft periphery to this disk.
5. hair-dryer as claimed in claim 1 or 2, wherein:
The downstream of the outer Zhou Dynasty this gas channel of the disk of this fan from this rotating shaft to this disk tilts gradually, and
Adjacent two impeller blades of this fan form the distance that makes between them from broadening gradually near the inside part of this rotating shaft periphery to this disk.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005087419 | 2005-03-25 | ||
| JP2005087419A JP2006263249A (en) | 2005-03-25 | 2005-03-25 | Hair-drier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1846560A true CN1846560A (en) | 2006-10-18 |
| CN100438799C CN100438799C (en) | 2008-12-03 |
Family
ID=36339864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100676486A Expired - Fee Related CN100438799C (en) | 2005-03-25 | 2006-03-22 | Hair dryer |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20060213074A1 (en) |
| EP (1) | EP1704792B1 (en) |
| JP (1) | JP2006263249A (en) |
| KR (1) | KR100693085B1 (en) |
| CN (1) | CN100438799C (en) |
| AT (1) | ATE406124T1 (en) |
| DE (1) | DE602006002411D1 (en) |
| HK (1) | HK1093141A1 (en) |
| RU (1) | RU2320248C2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102046036B (en) * | 2008-05-29 | 2014-04-16 | 宠物方案公司 | Thermoelectric handheld dryer |
| CN106897524A (en) * | 2017-02-28 | 2017-06-27 | 郑州云海信息技术有限公司 | A kind of method for designing for optimizing fan housing air outlet structure |
| CN110520009A (en) * | 2017-04-27 | 2019-11-29 | 芭比丽丝法科私人有限公司 | Hair dryer with speed control |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101468674B1 (en) * | 2008-07-18 | 2014-12-04 | 탁승호 | Low noise blower module |
| US20100263223A1 (en) * | 2009-03-06 | 2010-10-21 | Charlotte Wynne | Compact hair dryer with replaceable styling attachments |
| KR200461234Y1 (en) * | 2010-10-15 | 2012-06-29 | 오태준 | A compression blowing apparatus of hairdryer |
| CN202341168U (en) * | 2011-06-13 | 2012-07-25 | 尤汉贤 | Wind nozzle for hair dryers |
| GB201205679D0 (en) * | 2012-03-30 | 2012-05-16 | Dyson Technology Ltd | A hand held appliance |
| GB2515809B (en) * | 2013-07-05 | 2015-08-19 | Dyson Technology Ltd | A handheld appliance |
| GB2547138B (en) * | 2013-07-05 | 2018-03-07 | Dyson Technology Ltd | An attachment for a handheld appliance |
| KR101964103B1 (en) * | 2013-07-05 | 2019-04-01 | 다이슨 테크놀러지 리미티드 | A handheld appliance |
| GB2516249B (en) * | 2013-07-16 | 2017-03-01 | Dyson Technology Ltd | Heater for a hand held appliance |
| ITMI20150008U1 (en) * | 2015-01-16 | 2016-07-16 | Elchim Spa | STRUCTURE OF ELECTRIC HAIRDRYER WITH MOTOR PROTECTION DEVICE. |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1341653A (en) * | 1916-08-16 | 1920-06-01 | Charles M Lee | Fan, propeller, &c. |
| US1981991A (en) * | 1933-11-07 | 1934-11-27 | Thaddeus E Cline | Pump |
| US2484554A (en) * | 1945-12-20 | 1949-10-11 | Gen Electric | Centrifugal impeller |
| US3102679A (en) * | 1962-01-15 | 1963-09-03 | Loren Cook Company | Centrifugal impeller units |
| DE3428650C2 (en) * | 1984-08-03 | 1986-08-14 | Braun Ag, 6000 Frankfurt | Hair dryer with axial fan |
| JPH0648158Y2 (en) * | 1985-06-29 | 1994-12-07 | クリフアーフアーツオイクタイレ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング・プラス・コムパニー | Water pump impeller |
| US4794225A (en) * | 1987-10-09 | 1988-12-27 | Maese Hector L | Tube axial handheld blow dryer for hair |
| CN2211193Y (en) * | 1993-06-18 | 1995-11-01 | 杨琼香 | Flow guiding blowing drier with semiconductor heater |
| DE19500994A1 (en) * | 1995-01-14 | 1996-07-18 | Braun Ag | Impeller for centrifugal fan |
| CN2252549Y (en) * | 1996-03-20 | 1997-04-23 | 李宗胜 | Improved hair blower |
| JP2001149134A (en) * | 1999-11-25 | 2001-06-05 | Matsushita Electric Works Ltd | Hair dryer |
| JP2001204537A (en) * | 2000-01-27 | 2001-07-31 | Matsushita Electric Works Ltd | Hair dryer |
| US6393208B1 (en) * | 2000-08-14 | 2002-05-21 | Daniel M. Nosenchuck | Compressor with integrated impeller and motor |
-
2005
- 2005-03-25 JP JP2005087419A patent/JP2006263249A/en active Pending
-
2006
- 2006-03-15 RU RU2006108170/12A patent/RU2320248C2/en not_active IP Right Cessation
- 2006-03-17 US US11/377,277 patent/US20060213074A1/en not_active Abandoned
- 2006-03-22 CN CNB2006100676486A patent/CN100438799C/en not_active Expired - Fee Related
- 2006-03-23 KR KR1020060026459A patent/KR100693085B1/en not_active IP Right Cessation
- 2006-03-23 DE DE602006002411T patent/DE602006002411D1/en active Active
- 2006-03-23 AT AT06006042T patent/ATE406124T1/en not_active IP Right Cessation
- 2006-03-23 EP EP06006042A patent/EP1704792B1/en not_active Not-in-force
- 2006-12-19 HK HK06113944.4A patent/HK1093141A1/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102046036B (en) * | 2008-05-29 | 2014-04-16 | 宠物方案公司 | Thermoelectric handheld dryer |
| CN106897524A (en) * | 2017-02-28 | 2017-06-27 | 郑州云海信息技术有限公司 | A kind of method for designing for optimizing fan housing air outlet structure |
| CN106897524B (en) * | 2017-02-28 | 2020-06-12 | 苏州浪潮智能科技有限公司 | Design method for optimizing air outlet structure of outer frame of fan |
| CN110520009A (en) * | 2017-04-27 | 2019-11-29 | 芭比丽丝法科私人有限公司 | Hair dryer with speed control |
| CN110520009B (en) * | 2017-04-27 | 2022-07-29 | 芭比丽丝法科私人有限公司 | Hair dryer with speed control |
Also Published As
| Publication number | Publication date |
|---|---|
| DE602006002411D1 (en) | 2008-10-09 |
| RU2320248C2 (en) | 2008-03-27 |
| EP1704792B1 (en) | 2008-08-27 |
| RU2006108170A (en) | 2007-10-20 |
| ATE406124T1 (en) | 2008-09-15 |
| CN100438799C (en) | 2008-12-03 |
| KR100693085B1 (en) | 2007-03-12 |
| KR20060103175A (en) | 2006-09-28 |
| HK1093141A1 (en) | 2007-02-23 |
| JP2006263249A (en) | 2006-10-05 |
| US20060213074A1 (en) | 2006-09-28 |
| EP1704792A1 (en) | 2006-09-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100438799C (en) | Hair dryer | |
| US20050271500A1 (en) | Supersonic gas compressor | |
| US5810557A (en) | Fan wheel for an inline centrifugal fan | |
| EP1337758A2 (en) | High-efficiency, inflow-adapted, axial-flow fan | |
| US11401939B2 (en) | Axial fan configurations | |
| US20080187439A1 (en) | Blower assembly with pre-swirler | |
| WO1997042416A1 (en) | An impeller and fan incorporating same | |
| JP2003148395A (en) | Impeller of air-conditioning fan | |
| CA2276504A1 (en) | Micro fan | |
| JP2004218450A (en) | Centrifugal blower | |
| EP2035712A1 (en) | Centrifugal impeller | |
| US20100266426A1 (en) | Increased volumetric capacity of axial flow compressors used in turbomolecular vacuum pumps | |
| JP2010236401A (en) | Centrifugal fluid machine | |
| JP2008163820A (en) | Centrifugal compressor | |
| CN114680706B (en) | Fan assembly and dust collector | |
| JPH06299993A (en) | Forward-facing impeller having rotary diffuser | |
| JP6696525B2 (en) | Propeller fan | |
| CN219809167U (en) | Wind wheel structure and fan assembly | |
| CN212124781U (en) | Overhead motor home air conditioner indoor unit applying diagonal flow fan and motor home air conditioner | |
| RU2132002C1 (en) | Centrifugal stage of compressor | |
| KR20040105280A (en) | Blower | |
| CN1249406A (en) | Fan wheel | |
| CA2260998C (en) | Fan wheel for an inline centrifugal fan | |
| WO2020012186A1 (en) | A centrifugal compressor | |
| RU2418992C2 (en) | Radial impeller of centrifugal blade machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1093141 Country of ref document: HK |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: GR Ref document number: 1093141 Country of ref document: HK |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081203 Termination date: 20160322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |