EP1039142B1 - Diffuseur pour soufflante - Google Patents
Diffuseur pour soufflante Download PDFInfo
- Publication number
- EP1039142B1 EP1039142B1 EP00660054A EP00660054A EP1039142B1 EP 1039142 B1 EP1039142 B1 EP 1039142B1 EP 00660054 A EP00660054 A EP 00660054A EP 00660054 A EP00660054 A EP 00660054A EP 1039142 B1 EP1039142 B1 EP 1039142B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diffuser
- fan wheel
- arrangement
- fan
- blades
- 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 - Lifetime
Links
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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
Definitions
- the invention relates to an arrangement in connection with a fan comprising a rotatable fan wheel and a diffuser arranged in connection with the fan wheel to convert kinetic energy generated by a high velocity of exhaust into static pressure.
- a diffuser arranged after a fan wheel in the direction of flow is to convert the dynamic pressure generated by a high velocity of exhaust of the fan wheel into static pressure. This can be achieved by lowering the high velocity of exhaust after the fan wheel by the diffuser.
- An object of the invention is to provide an arrangement to enable drawbacks of the prior art to be eliminated. This is achieved by an arrangement of the invention.
- the arrangement of the invention is characterized in that the sides of the blades of the diffuser facing the fan wheel are bevelled.
- An advantage of the arrangement of the invention is mainly that it enables all the above-mentioned drawbacks to be substantially efficiently fected and a preferable result to be achieved.
- a further advantage of the invention is its simplicity, which means that the invention is inexpensive to manufacture and use.
- a still further advantage of the invention is its flexibility in use, whereby an arrangement of the invention can be preferably applied to different fans.
- Figure 1 schematically shows how a flow of a gaseous medium, such as air, behaves in a fan apparatus of the prior art.
- reference number 1 refers to a fan wheel and reference number 2 to a diffuser by which, as stated above, kinetic energy generated by a high velocity of exhaust is converted into static pressure.
- the fan wheel is rotated by an appropriate motor, such as an electric motor.
- the motor is not shown in the figure.
- the flow of air is indicated in Figure 1 by means of arrows, whereby the above-mentioned disturbing reflow is also clearly apparent.
- the solution of Figure 1 suffers from the disadvantages relating to the noise level, as stated above.
- Figure 2 schematically shows an arrangement of the invention.
- the same reference numbers have the same significance as in Figure 1.
- the direction of rotation of the fan wheel 1 has been indicated by arrow N.
- high and low flow rates of air which are used to describe the basis of operation of the diffuser, in other words the above-mentioned conversion of kinetic energy into static pressure, have also been denoted in Figure 2 by arrows NK and NM.
- Figure 2 further clearly shows blades 3 of the fan wheel and blades 4 located in a diffuser of the present embodiment, the blades 4 of the diffuser being arranged between two side plates 2a, 2b located at a distance from each other, as can be seen from Figures 3 to 5.
- At least one of the side plates 2a, 2b of the diffuser is arranged to overlap with the outer edge of the rim of the fan wheel 1.
- the above-mentioned essential feature of the invention is clearly apparent in Figure 2 wherein the outer rim of the fan wheel 1 is indicated in a dotted line and the edge of the side plate of the diffuser is indicated in a continuous line. This can also be clearly seen in Figure 3 to 4.
- the above-mentioned essential feature of the invention also becomes apparent in Figures 5 and 6.
- Figures 3 to 4 and 5 and 6 the flow of air is schematically indicated by means of arrows.
- the above-described structure enables the harmful reflow mentioned earlier to be avoided and the problems related to the noise level to be mitigated.
- both side plates of the diffuser 2 are arranged to overlap with the outer edge of the rim of the fan wheel, as shown in Figures 3 to 5, for example.
- the invention can, however, also be applied such that only one of the sides of the diffuser overlaps with the rim of the fan wheel.
- Such an application is schematically shown in Figure 6 wherein only the side plate 2b of the diffuser is arranged to overlap with the outer edge of the rim of the fan wheel.
- the structure of Figure 6 yields a slightly poorer result than, for example, the arrangement of Figure 5, but the solution of Figure 6 is advantageous to installability since the diffuser can be a simple, uniform structure which can be installed in place from the side.
- the overlapping side plate can be either one of the side plates 2a, 2b in this application.
- the structure of the diffuser must be a structure which can be opened, for example.
- the invention can be applied in connection with different diffuser solutions, as shown in Figures 2 to 4.
- Figure 2 shows the blades 4 located in the diffuser that are constructed from straight parts.
- the straightness of the blades 4 is apparent in Figure 2.
- the straight blades 4 are an advantage in the manufacturing process.
- the blades 4 of the diffuser can be shaped in many different ways, as shown in Figures 3 to 4.
- the sides of the blades 4 facing the fan wheel are bevelled.
- the sides 4a are sloped seen in the direction of incoming air such that the edge of the diffuser facing the front side plate 2a is located at a greater distance from the fan wheel 1 than the edge facing the side plate 2b located further back.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Chemical Treatment Of Metals (AREA)
- Constitution Of High-Frequency Heating (AREA)
- Elimination Of Static Electricity (AREA)
Claims (2)
- Arrangement relatif à un ventilateur comprenant une roue de ventilateur rotatoire (1) et un diffuseur (2) disposé en une connexion radiale avec la roue de ventilateur pour convertir énergie cinétique produite par échappement d'une grande vitesse en une pression statique, dans ledit arrangement au moins une des plaques latérales (2a, 2b) du diffuseur (2) est disposée à recouvrir partiellement le bord extérieur de la circonférence de la roue de ventilateur (1), caractérisé en ce que les côtés (4a) des pales droites (4) du diffuseur (2) en face de la roue de ventilateur sont chanfreinés entre les deux plaques latérales (2, 2b).
- Arrangement selon la revendication 1, caractérisé en ce que, quand vu de la direction d'arrivée de l'air, les côtés (4a) des pales (4) du diffuseur (2) sont chanfreinés de manière que le bord du diffuseur (2) en face de la plaque latérale de devant (2a) se situe à une distance plus longue de la roue de ventilateur (1) que le bord en face de la plaque latérale (2b) située plus en arrière.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI990637A FI105946B (fi) | 1999-03-22 | 1999-03-22 | Sovitelma puhaltimen yhteydessä |
FI990637 | 1999-03-22 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1039142A2 EP1039142A2 (fr) | 2000-09-27 |
EP1039142A3 EP1039142A3 (fr) | 2002-05-08 |
EP1039142B1 true EP1039142B1 (fr) | 2004-09-22 |
Family
ID=8554255
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00660054A Expired - Lifetime EP1039142B1 (fr) | 1999-03-22 | 2000-03-21 | Diffuseur pour soufflante |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1039142B1 (fr) |
AT (1) | ATE277287T1 (fr) |
DE (1) | DE60013940T2 (fr) |
FI (1) | FI105946B (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1455094A1 (fr) * | 2003-03-04 | 2004-09-08 | Ziehl-Abegg AG | Roue ventilateur radial |
RU183324U1 (ru) * | 2017-12-29 | 2018-09-18 | федеральное государственное автономное образовательное учреждение высшего образования "Санкт-Петербургский политехнический университет Петра Великого" (ФГАОУ ВО "СПбПУ") | Безлопаточный диффузор малорасходной центробежной компрессорной ступени |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2471174A (en) * | 1947-04-24 | 1949-05-24 | Clark Bros Co Inc | Centrifugal compressor stability means |
US2665841A (en) * | 1951-05-04 | 1954-01-12 | Allen Mcmeen J | Air circulator |
US3627440A (en) * | 1970-04-07 | 1971-12-14 | Westinghouse Electric Corp | Centrifugal fan |
JPS5853700A (ja) * | 1981-09-25 | 1983-03-30 | Mitsubishi Heavy Ind Ltd | 遠心形回転機械のディフューザ |
WO1998045601A1 (fr) * | 1997-04-04 | 1998-10-15 | Bosch Automotive Systems Corporation | Ventilateur centrifuge a aubes de regulation de debit |
US5841943A (en) * | 1997-04-25 | 1998-11-24 | Soundesign, Llc | Ducted flow hair dryer with multiple impellers |
-
1999
- 1999-03-22 FI FI990637A patent/FI105946B/fi not_active IP Right Cessation
-
2000
- 2000-03-21 DE DE60013940T patent/DE60013940T2/de not_active Expired - Lifetime
- 2000-03-21 EP EP00660054A patent/EP1039142B1/fr not_active Expired - Lifetime
- 2000-03-21 AT AT00660054T patent/ATE277287T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1039142A2 (fr) | 2000-09-27 |
FI990637A0 (fi) | 1999-03-22 |
ATE277287T1 (de) | 2004-10-15 |
FI105946B (fi) | 2000-10-31 |
EP1039142A3 (fr) | 2002-05-08 |
DE60013940D1 (de) | 2004-10-28 |
DE60013940T2 (de) | 2005-10-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6663342B2 (en) | Composite heat-dissipating system and its used fan guard with additional supercharging function | |
US6244818B1 (en) | Fan guard structure for additional supercharging function | |
US20060124175A1 (en) | Reverse flow preventing device and electronic apparatus | |
JP4421299B2 (ja) | オーバーラップするファンを備えたエンジン冷却ファンアセンブリ | |
AU2006270875A1 (en) | Axial flow fan | |
GB2123893A (en) | Fans for air conditioners | |
US7344358B2 (en) | Fan assembly and fan frame thereof | |
WO2003042546A1 (fr) | Ventilateur centrifuge a succion bidirectionnelle et dispositif de refroidissement pour ordinateur | |
EP1039142B1 (fr) | Diffuseur pour soufflante | |
WO2007011046A1 (fr) | Soufflerie et unité extérieure de climatisation comportant la soufflerie | |
JP2000337295A (ja) | 電動送風機と電気掃除機 | |
EP1619393B1 (fr) | Ensemble ventilateur et son boîtier | |
JPH05312191A (ja) | 遠心ファン | |
JPH06193593A (ja) | 遠心送風機の羽根車 | |
KR101156413B1 (ko) | 팬 및 쉬라우드 조립체 | |
CN216554492U (zh) | 轴流风扇 | |
JPH08159099A (ja) | 軸流送風機 | |
JP2001173596A (ja) | 多翼送風機 | |
CN1090740C (zh) | 空气调节器 | |
JP2715784B2 (ja) | クロスフローファン装置 | |
JPH06101696A (ja) | 遠心送風機 | |
JP2000136797A (ja) | 送風羽根車 | |
CN220487945U (zh) | 散热风扇用底座及散热风扇 | |
CN216429989U (zh) | 一种稳定运行的风机 | |
CN218410085U (zh) | 一种贯流风轮、空调内机和空调器 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20020918 |
|
17Q | First examination report despatched |
Effective date: 20021212 |
|
AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FLAEKT WOODS AB |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 Ref country code: BE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 Ref country code: LI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 Ref country code: CH Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20040922 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REF | Corresponds to: |
Ref document number: 60013940 Country of ref document: DE Date of ref document: 20041028 Kind code of ref document: P |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20041222 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20041222 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20041222 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050102 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050321 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050321 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050321 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050331 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20050623 |
|
EN | Fr: translation not filed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20050321 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20050222 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20190322 Year of fee payment: 20 Ref country code: DE Payment date: 20190320 Year of fee payment: 20 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R071 Ref document number: 60013940 Country of ref document: DE |