WO2008000611A1 - Trockner mit verringerter geräuschentwicklung, hierfür geeignetes gebläse und läuferrad sowie verfahren zur herstellung des läuferrades - Google Patents
Trockner mit verringerter geräuschentwicklung, hierfür geeignetes gebläse und läuferrad sowie verfahren zur herstellung des läuferrades Download PDFInfo
- Publication number
- WO2008000611A1 WO2008000611A1 PCT/EP2007/055686 EP2007055686W WO2008000611A1 WO 2008000611 A1 WO2008000611 A1 WO 2008000611A1 EP 2007055686 W EP2007055686 W EP 2007055686W WO 2008000611 A1 WO2008000611 A1 WO 2008000611A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impeller
- tool
- tool part
- fan
- dryer
- Prior art date
Links
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
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
- F04D29/282—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers the leading edge of each vane being substantially parallel to the rotation axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2681—Moulds with rotatable mould parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/40—Organic materials
- F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
Definitions
- the invention relates to a dryer with reduced noise, a suitable fan and impeller and a method for producing the impeller.
- the invention particularly relates to a fan with a specially shaped rotor wheel and a dryer containing this fan and the impeller wheel contained in this dryer or blower.
- laundry located in a generally rotating drum is dried by passing a heated stream of air through the drum and thereby the laundry, which is capable of removing moisture from the wet laundry, thereby gradually washing the laundry is dried.
- the supplied air stream (“process air stream”) is heated in a supply line in front of the drum (“laundry drum”) by means of a heater and after passing through the laundry in the drum either discharged to the outside (exhaust air dryer) or fed to a heat exchanger in which Air is cooled and the moisture precipitates as condensate.
- a blower is used to carry the air, which has a rotor wheel (also called “drum rotor wheel” or “radial fan wheel”).
- drum rotor wheel also called “drum rotor wheel” or “radial fan wheel”
- EP 0 702 105 B1 describes a housing for a blower in a household appliance, in particular in a domestic tumble dryer, which makes it possible to reduce the noise produced and to dampen the noises produced.
- the housing has a radial impeller which is rotatably mounted in a volute and the air is supplied axially, wherein the volute casing is surrounded by a housing wall with the spiral contour adapted and spaced apart extending wall shape of a shell and means for compliance the distance are provided.
- the object of the present invention was therefore to provide a dryer and a fan suitable for this purpose, which allow a further reduction of the noise.
- the invention also relates according to claim 4, a method for producing the impeller.
- the dryer according to the invention thus has a drum for drying wet laundry by means of process air, a heater in a supply air duct in front of the drum and an exhaust duct downstream of the drum and a fan containing a rotor wheel, wherein the impeller has an oblique blading.
- Angular blading in the sense of the invention means that the blades of the impeller (also called “impeller”) form an angle different from 90 ° with the wheel circumference of the impeller. This means that the edge of an airfoil is not parallel to the axis of rotation of the impeller during operation of the fan.
- the dryer according to the invention may advantageously be both a condensation dryer and an exhaust air dryer.
- the dryer according to the invention and the blower according to the invention may contain soundproofing components, as described, for example, in EP 0 702 105 B1.
- soundproofing components as described, for example, in EP 0 702 105 B1.
- further soundproofing measures also described in EP 0 702 105 B1 can be taken. Examples of this are a double walledness of the spiral housing of the blower as well as a minimization of the number of sound bridges, a perforation of the spiral jacket as well as the occupation of intermediate spaces with insulation material.
- the invention also relates to a blower suitable for use in this dryer.
- the blower has a rotor wheel with an oblique blading, wherein the impeller is made of plastic.
- the blower according to the invention is suitable for all domestic appliances in which blowers are used, for example air conditioners, hairdryers, fans and dryers.
- the invention also relates to a particularly suitable for the aforementioned fan impeller.
- the impeller with an oblique blading according to the invention is made of plastic and has a shape which, when manufactured by injection molding in a two-part tool comprising a first tool part and a second tool part, the cavity in the form of the impeller in the closed state of the two-part tool form, the demolding of the rotor wheel by opening the tool as a result of the superposition of a translational movement and a rotational movement between the first tool part and the second tool part allows.
- the number of blades can vary within a wide range.
- the blades forming the oblique blading may have different shapes.
- the paddle wheels are not flat.
- the paddle wheels are convex or concave.
- the impeller or radial impeller is rotatably mounted in the blower generally in a spiral housing, wherein the impeller the air is supplied axially.
- a rotor wheel with an oblique blading leads to a significant noise reduction compared with a straight blading impeller otherwise identical. This is especially true at small distances of the blades of the rotor wheel to the tongue of the blower housing, as in this case sounds are particularly easy audible and measurable.
- the realization of small distances between tongue and blades or impeller is but because of the usually limited space in blowers, which should be as small as possible, an essential means for increasing the performance of a cross-flow fan.
- the invention also relates to a method for producing the impeller wheel according to the invention with an oblique blading.
- a two-part tool which comprises a first tool part and a second tool part, which form a cavity in the form of the impeller in the closed state of the two-part tool,
- first tool part and the second tool part are selected such that a removal of the impeller by the opening of the tool as a result of the superposition of a translational movement and a rotational movement between the first tool part and the second tool part is possible, (b) from the material, the impeller formed, and
- the material that can form a solid plastic in the form of the impeller is a thermoplastic polymer material in the form of a melt.
- the material capable of forming a solid plastic in the form of the impeller is a reactive mixture of monomers capable of forming a solid polymeric material upon completion of a polymerization reaction.
- the invention has numerous advantages.
- a blower according to the invention with an obliquely bladed rotor wheel (“impeller with inclined blading")
- a rotor wheel with a larger diameter can be used in comparison to the case with a just bladed rotor wheel without the noise level increasing
- a significant reduction in noise can be achieved while the fan output remains the same.
- the invention can not only be applied to home appliances; rather, it is transferable to all other comparable blower applications. Further details of the invention will become apparent from the following description of non-limiting embodiments. Reference is made to FIGS. 1 to 7.
- Fig. 1 a partial section through a dryer is shown, which shows both the type of an exhaust air dryer (solid lines) and the type of a condensation air dryer with circulating air principle (dashed lines).
- Fig. 2 shows a conventional blower used in a conventional dryer with a straight bladed impeller.
- FIG. 3 shows a fan which contains a rotor wheel with oblique blading.
- FIG. 4 shows a rotor wheel with a straight blading.
- FIG. 5 shows a rotor wheel with oblique blading.
- FIG. 6 shows a rotor wheel in a closed two-part tool of an injection molding apparatus which is otherwise not shown in detail, wherein a part has been cut out of the tool for visualizing the rotor wheel.
- FIG. 7 illustrates, on the basis of the opening of the tool shown in FIG. 6, the principle of demolding of the rotor wheel during production by means of injection molding.
- a dryer 1 is shown in partial sectional view. This has in its upper part on a program control device 3, which is adjustable by an operating handle 5 and may preferably include a fuzzy processor controller, not shown here.
- the dryer 1 has a drum 2, which is accessible via a pot 9 from a loading door 1 1 and over which the laundry can be put into the drum 2 and taken out again.
- a process air opening 13 is arranged, which sucks air from outside via a fan 15 and flows into a process air channel 17.
- the interior of fan 15, which can not be seen here, has a rotor wheel with oblique blading in this dryer.
- the fresh process air flows through a heater 18 to the input 21 of the drum 2.
- the process air passes through the drum 2 and flows at the outlet 23 through an exhaust duct 25.
- a temperature sensor 12 is arranged in at predetermined time intervals periodically detects the temperature of the process air and the measured value of a corresponding control device (not shown) supplies.
- the process air flows through the exhaust duct 25 to an exhaust outlet 27 and then into the open.
- the dryer 1 of this embodiment thus operates on the exhaust air principle.
- the process air circuit can also be closed to form a forced-air tumble dryer, wherein the exhaust air from the exhaust duct 25 is guided to a condenser 29.
- the condenser 29 is designed as a heat exchanger, in which the moist exhaust air is cooled down and condenses the increased humidity accordingly. This air is then conveyed through the fan 15 in the process air duct 17 again.
- the condensate can be removed in a suitable location from the dryer 1 in a manner not shown in Figure 1 or pumped into a condensate tank, from which it can be removed by hand.
- the manifold 28 of the exhaust duct 25 and the fan 15 are reversed and connected to the respective nozzle 31 and 32 of the condenser 29.
- FIG. 2 shows an open fan, in which the impeller 4 straight arranged paddle wheels 6 has.
- 8 means the tongue of the blower. The distance between tongue 8 and impeller 4 determines the formation of noise during operation of the fan.
- FIG. 3 shows a fan 15, which has a rotor wheel 4 with oblique blading.
- FIG. 4 shows a rotor wheel 4 with a straight blading.
- 19 means the axis of rotation about which the impeller 4 rotates during operation of the fan. In this impeller 4, the edge of a conventional impeller 6 is parallel to the axis of rotation 19th
- FIG. 5 shows a rotor wheel 4 with oblique blading 7 (obliquely arranged impellers 7), which is otherwise identical to the impeller wheel of FIG.
- FIG. 6 and FIG. 7 illustrate the production of a rotor wheel 4 with oblique blading 7 by means of an injection molding process.
- FIG. 6 shows a rotor wheel 4 in a closed two-part tool 10 of an injection molding apparatus otherwise not shown in detail, wherein a part has been cut out of the tool for visualizing the rotor wheel 4.
- the two-part tool 10 consists of a first tool part 14 and a second tool part 16.
- FIG. 7 illustrates, on the basis of the opening of the tool 20 shown in FIG. 6, the principle of demolding the rotor wheel 4 during production by means of injection molding.
- the first tool part 14 and the second tool part 16 are separated from each other in Figure 7.
- FIG. 7 illustrates this separation as a result of the superposition of a translation movement of the two tool parts (14, 16) away from one another and a rotational movement of the two tool parts (14, 16) relative to one another about the rotation axis 19.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Textile Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/308,844 US8051578B2 (en) | 2006-06-29 | 2007-06-11 | Reduced noise dryer fan and impeller and producing method thereof |
EP07730036A EP2038472A1 (de) | 2006-06-29 | 2007-06-11 | Trockner mit verringerter geräuschentwicklung, hierfür geeignetes gebläse und läuferrad sowie verfahren zur herstellung des läuferrades |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006029960A DE102006029960A1 (de) | 2006-06-29 | 2006-06-29 | Trockner mit verringerter Geräuschentwicklung, hierfür geeignetes Gebläse und Läuferrad sowie Verfahren zur Herstellung des Läuferrades |
DE102006029960.4 | 2006-06-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008000611A1 true WO2008000611A1 (de) | 2008-01-03 |
Family
ID=38524424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/055686 WO2008000611A1 (de) | 2006-06-29 | 2007-06-11 | Trockner mit verringerter geräuschentwicklung, hierfür geeignetes gebläse und läuferrad sowie verfahren zur herstellung des läuferrades |
Country Status (5)
Country | Link |
---|---|
US (1) | US8051578B2 (de) |
EP (1) | EP2038472A1 (de) |
CN (1) | CN101479424A (de) |
DE (1) | DE102006029960A1 (de) |
WO (1) | WO2008000611A1 (de) |
Cited By (2)
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DE102009003170A1 (de) | 2009-05-15 | 2010-12-02 | BSH Bosch und Siemens Hausgeräte GmbH | Lüfterrad, Gebläse mit einem Lüfterrad, Wäschetrocknungsgerät mit einem Gebläse und Verfahren zum Herstellen eines Lüfterrads |
US8051578B2 (en) * | 2006-06-29 | 2011-11-08 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Reduced noise dryer fan and impeller and producing method thereof |
Families Citing this family (16)
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DE102008014305A1 (de) * | 2008-03-14 | 2009-09-17 | BSH Bosch und Siemens Hausgeräte GmbH | Ablufttrockner mit Umluftanteil sowie Verfahren zu seinem Betrieb |
DE102008020556A1 (de) * | 2008-04-24 | 2009-10-29 | BSH Bosch und Siemens Hausgeräte GmbH | Ablufttrockner mit verminderter Kondensatbildung sowie Verfahren zu seinem Betrieb |
CN101832294B (zh) * | 2010-05-21 | 2013-04-17 | 余姚天超通风设备有限公司 | 一种金属斜贯流风叶的制造方法 |
US8776394B2 (en) * | 2011-10-04 | 2014-07-15 | Whirlpool Corporation | Blower for a laundry treating appliance |
US20130192085A1 (en) * | 2012-01-30 | 2013-08-01 | Bsh Home Appliances Corporation | Washer dryer with a temperature sensor and process for its operation |
DE102012213930A1 (de) | 2012-08-07 | 2014-02-13 | BSH Bosch und Siemens Hausgeräte GmbH | Gebläse mit Lufteintrittsdüse für verwirbelten Luftstrom sowie Lufteintrittsdüse für ein Gebläse |
US9057153B2 (en) * | 2013-09-20 | 2015-06-16 | General Electric Company | Dryer appliance with an impeller assembly |
CN103668881B (zh) * | 2013-12-30 | 2018-03-13 | 惠而浦(中国)投资有限公司 | 洗衣机通风除味及小衣物低温烘干的控制***与控制方法 |
US9243844B2 (en) * | 2014-03-28 | 2016-01-26 | General Electric Company | Dryer appliance with an impeller assembly |
CN106457964B (zh) * | 2014-06-11 | 2019-04-02 | 松下知识产权经营株式会社 | 温度调节单元、温度调节***和具备温度调节单元的车辆 |
US9617678B2 (en) * | 2014-10-24 | 2017-04-11 | Haier Us Appliance Solutions, Inc. | Impeller housing for an appliance |
US9493903B2 (en) * | 2014-10-27 | 2016-11-15 | Haier Us Appliance Solutions, Inc. | Impeller assembly for an appliance |
US20200127345A2 (en) * | 2015-07-24 | 2020-04-23 | Panasonic Intellectual Property Management Co., Ltd. | Temperature conditioning unit, temperature conditioning system, and vehicle |
JP6587536B2 (ja) * | 2015-12-24 | 2019-10-09 | 株式会社エンプラス | インペラの射出成形金型及びインペラの射出成形方法 |
DE102018100466A1 (de) | 2018-01-10 | 2019-07-11 | Abb Turbo Systems Ag | Filterschalldämpfer für einen Abgasturbolader einer Brennkraftmaschine |
DE102018206629A1 (de) * | 2018-04-27 | 2019-10-31 | Lavatec Laundry Technology Gmbh | Trockner und Verfahren zum Betrieb eines Trockners |
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2007
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- 2007-06-11 EP EP07730036A patent/EP2038472A1/de not_active Withdrawn
- 2007-06-11 CN CNA2007800241754A patent/CN101479424A/zh active Pending
- 2007-06-11 WO PCT/EP2007/055686 patent/WO2008000611A1/de active Application Filing
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US8051578B2 (en) * | 2006-06-29 | 2011-11-08 | Bsh Bosch Und Siemens Hausgeraete Gmbh | Reduced noise dryer fan and impeller and producing method thereof |
DE102009003170A1 (de) | 2009-05-15 | 2010-12-02 | BSH Bosch und Siemens Hausgeräte GmbH | Lüfterrad, Gebläse mit einem Lüfterrad, Wäschetrocknungsgerät mit einem Gebläse und Verfahren zum Herstellen eines Lüfterrads |
Also Published As
Publication number | Publication date |
---|---|
CN101479424A (zh) | 2009-07-08 |
US20090241363A1 (en) | 2009-10-01 |
DE102006029960A1 (de) | 2008-01-03 |
EP2038472A1 (de) | 2009-03-25 |
US8051578B2 (en) | 2011-11-08 |
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