CN112955666B - Fan device comprising closed triangular sealing groove - Google Patents
Fan device comprising closed triangular sealing groove Download PDFInfo
- Publication number
- CN112955666B CN112955666B CN201980072845.2A CN201980072845A CN112955666B CN 112955666 B CN112955666 B CN 112955666B CN 201980072845 A CN201980072845 A CN 201980072845A CN 112955666 B CN112955666 B CN 112955666B
- Authority
- CN
- China
- Prior art keywords
- diffuser
- housing
- fan
- sealing
- axial
- 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.)
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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
- F04D29/08—Sealings
- F04D29/083—Sealings 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
-
- 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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- 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
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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- 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
- F05D2250/00—Geometry
- F05D2250/10—Two-dimensional
- F05D2250/11—Two-dimensional triangular
-
- 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
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/51—Inlet
Abstract
The invention relates to a fan arrangement having a fan housing of a fan, a diffuser housing fixed to the fan housing, and a diffuser accommodated in the diffuser housing, wherein a closed triangulation sealing groove having three sealing surfaces is formed between the fan housing, the diffuser housing, and the diffuser, wherein the fan housing, the diffuser housing, and the diffuser each form one of the three sealing surfaces, and wherein a sealing element is provided in the closed triangulation sealing groove, which seals the fan housing, the diffuser housing, and the diffuser relative to one another.
Description
Technical Field
The invention relates to a fan device, comprising a fan housing, a diffuser housing fixed on the fan housing, and a diffuser accommodated in the diffuser housing, wherein the fan housing, the diffuser housing and the diffuser are sealed relative to each other.
Background
Corresponding fan devices having a fan housing, a diffuser housing fixed to the fan housing and a diffuser accommodated in the diffuser housing are known from the prior art. Fan devices of this type are used, for example, in the field of heating technology, in which a diffuser accommodated in a diffuser housing is disposed in front of an air inlet opening of the fan. In the prior art, the relative sealing is achieved by means of sealing elements, one sealing element being arranged between each two components. In particular, the fan housing is sealed with respect to the diffuser housing by a first axial seal and the diffuser is sealed with respect to the fan housing by a second axial seal. This means that several sealing elements must be installed during assembly, which can lead to assembly errors and to leakage if one of the sealing elements fails. Furthermore, the elastic sealing element always generates an axial force on the adjacent parts in the assembled state.
Disclosure of Invention
It is therefore an object of the present invention to provide a fan apparatus that achieves a relative seal between a fan housing, a diffuser housing, and a diffuser received in the diffuser housing with only one sealing element.
This object is achieved by the combination of features according to claim 1.
The invention provides a fan device, which comprises a fan shell of a fan, a diffuser shell fixed on the fan shell and a diffuser accommodated in the diffuser shell, wherein a closed triangular sealing groove with three sealing surfaces is formed among the fan shell, the diffuser shell and the diffuser. Wherein the fan housing, the diffuser housing and the diffuser each form one of the three sealing surfaces. And a sealing element for relatively sealing the fan shell, the diffuser shell and the diffuser is arranged in the closed triangular sealing groove.
The triangular seal groove has a triangular cross-section and is bounded by three sealing surfaces. By arranging the fan housing, the diffuser housing and the diffuser particularly such that each component forms one of the three sealing surfaces, sealing can be achieved by means of only one sealing element. In addition to the cost savings associated with the use of fewer sealing elements or elements, the assembly of the components can be simplified. The risk of forgetting the sealing element when only one sealing element has to be provided is relatively reduced compared to the situation where several sealing elements have to be mounted at different locations. Furthermore, the risk of incorrect installation of the sealing element is reduced, since the triangular sealing groove already defines a predetermined receiving space into which the sealing element can be inserted when two of the three components are preassembled. Only a third part then has to be added in order to close the triangular sealing groove with the sealing element inside.
With respect to the fan apparatus, it is preferable to provide: the three sealing surfaces of the triangular sealing groove are arranged in a right triangle. Whereby the sealing surface can be optimally aligned with each of the fan housing, the diffuser housing and the diffuser.
One improvement of the fan device further provides that: the sealing surface of the triangular sealing groove formed by the diffuser is formed on the radially outer surface of the diffuser. The sealing element preferably acts only on the diffuser in the radial direction, so that in the assembled state the sealing element does not exert an axial force on the diffuser. The diffuser is inserted axially into the fan housing. But axial forces between the components can cause the diffuser and fan housing to separate axially, which is to be avoided.
In an advantageous embodiment of the fan device, the sealing surface at the fan housing is formed by an axial surface facing the diffuser housing. This axial surface extends perpendicularly to the sealing surface formed by the diffuser, so that two of the three sealing surfaces are at an angle of 90 ° to each other. The sealing element thus preferably bears axially against the fan housing at the axial surface and radially outwardly against the radially outer surface of the diffuser.
In a preferred embodiment, the third sealing surface at the diffuser housing is formed by a cone-side surface which faces the diffuser accommodated in the diffuser housing and the fan housing and extends at an angle of 45 ° to the two sealing surfaces formed by these components, respectively.
The sealing element is preferably formed by an elastic sealing ring with a circular cross section, i.e. in particular an O-ring. Among these, one advantageous implementation is set forth as follows: the ratio of the cross-sectional area of the seal ring to the cross-sectional area of the triangular groove is in the range of 0.6-0.72. Wherein in the assembled state the sealing element is pressed in the triangular groove by the three sealing surfaces against failure.
One improvement of the fan device further provides that: the diffuser has a radially peripheral portion that abuts an axial surface of the fan housing. The radially peripheral portion preferably surrounds the fluid channel formed by the diffuser and forms a radially outer fixing portion for the fixed arrangement of the diffuser in the diffuser housing.
In an advantageous embodiment variant, the diffuser further comprises an axial abutment surface facing the fan housing and a joint projecting axially relative to the abutment surface. The axial contact surface is preferably formed on a radial peripheral portion of the diffuser, the engagement portion being formed adjacent to the peripheral portion. The axially protruding engagement portion projects into a fan housing opening of the fan housing (in particular, an air intake opening of the fan) in a state of being assembled to the fan housing.
With regard to the interaction of the diffuser with the diffuser housing, in a further development the following is provided: the diffuser housing and the diffuser have an overlap extending axially parallel to the outer side surface of the diffuser, which overlap is in direct contact with the cone-side surface formed by the diffuser housing. As such, the diffuser housing and diffuser are at least partially in direct planar abutment together and form a coupling face abutting the triangular seal groove.
An advantageous development of the fan device further provides: an axial stop is formed on the diffuser housing, against which the diffuser abuts. The axial stop determines the position of the diffuser in the diffuser housing and relative to the fan housing.
Drawings
With regard to the features of further advantageous developments of the invention, reference is made to the drawing in the following for a detailed description of preferred embodiments of the invention. Wherein:
FIG. 1 is a perspective view of a fan having a fan assembly;
fig. 2 is a side sectional view of a portion of a fan assembly in which components are connected to one another.
Detailed Description
For ease of understanding, fig. 1 shows a fan 100 on which the fan device 1 according to fig. 2 is mounted.
Fig. 2 shows an exemplary embodiment of a fan device 1 in a side sectional view, in which only the regions in which the components are connected to one another and sealed relative to one another are illustrated. The fan apparatus 1 includes a fan housing 2 of the fan, a diffuser housing 3 fixed to the fan housing 2, and a diffuser 4 accommodated in the diffuser housing 3. The diffuser 4 is fixed at the suction opening 15 of the fan housing 2 and has a hollow radial peripheral portion 9 which projects radially with respect to the axial central fluid passage 49 and forms a flange as a fixing portion. With this flange, the diffuser 4 bears against the axial surface of the fan housing 2. In the axial extension of the fluid channel 49, a joint 19' is integrally provided on the diffuser 4, which joint extends into the air inlet opening 15 of the fan housing 2 and abuts against the inner wall of the air inlet opening, axially beyond the peripheral portion 9. Thus, the diffuser 4 may be arranged to be positionally fixed relative to the fan housing 2.
The diffuser 4 is accommodated in the diffuser housing in such a manner that the diffuser housing 3 circumferentially surrounds the diffuser 4. A closed triangular seal groove 10 with three sealing surfaces is formed between the fan casing 2, the diffuser casing 3 and the peripheral portion 9 of the diffuser 4, which triangular seal groove is realized by the axial surface 6 of the fan casing 2, the radially outer side surface 5 at the peripheral portion 9 of the diffuser 4 and the radially inwardly facing cone side surface 7 of the diffuser casing 3. The three sealing surfaces of the triangular sealing groove 10 are arranged opposite one another in a right-angled triangle, wherein the cone-side surface 7 of the diffuser housing 3 forms the hypotenuse. The triangular sealing groove 10 forms a receiving space for an elastic sealing ring 8, which is designed as an O-ring and seals the fan housing 2, the diffuser housing 3 and the diffuser 4 relative to one another. In the illustrated embodiment, the ratio of the sealing ring cross-sectional area to the triangular groove cross-sectional area is 0.65, wherein the cross-sectional area enclosed by the sealing ring 8 (i.e. by the outer circumference of the sealing ring) in the section according to fig. 1 is defined as the sealing ring cross-sectional area, and the cross-sectional area occupied by the triangular sealing groove 10 in the section according to fig. 1 is defined as the triangular groove cross-sectional area.
In all three corners of the triangular seal groove 10, the members forming the corners overlap each other. For this purpose, the diffuser housing 3 and the diffuser 4 have an overlap 13 which extends parallel to the outer lateral surface 5 of the diffuser 4 in the axial direction AR, directly adjoins the cone-side surface 7 formed by the diffuser housing 3 in the axial direction AR and extends parallel to the peripheral portion 9 of the diffuser 4 over a predetermined axial length, wherein the diffuser housing 3 and the diffuser 4 lie directly flat against one another in the overlap 13. Similarly, an overlap portion 15 is formed by the fan casing 2 and the peripheral portion 9 of the diffuser 4, and an overlap portion 16 extending in the radial direction RR is formed between the fan casing 2 and the diffuser casing 3.
On the diffuser housing 3, an axial stop 19 is further formed by a shoulder projecting inward in the radial direction RR, against which the peripheral portion 9 of the diffuser 4 abuts. In the assembled state, the axial position of the diffuser 4 is thus determined by the diffuser housing 3. Furthermore, the diffuser housing 3 and the diffuser 4 can be preassembled via the axial stop 19 and already form a receiving space of the triangular sealing groove 10 for receiving the elastic sealing ring 8. The fan housing 2 is placed over the preassembled component, thereby closing the triangular sealing groove 10 and pressing the elastic sealing ring 8.
The elastic sealing ring 8 acts only radially on the outside on the side surface 5 of the diffuser 4, so that no axial forces are generated between the fan housing 2 and the diffuser 4 in the assembled state, which would separate the components from one another and would cause leakage.
Claims (13)
1. A fan arrangement (1) with a fan housing (2) of a fan (100), a diffuser housing (3) fixed on the fan housing (2) and a diffuser accommodated in the diffuser housing (3), wherein a closed delta seal groove (10) with three sealing surfaces is formed between the fan housing (2), the diffuser housing (3) and the diffuser (4), wherein the fan housing (2), the diffuser housing (3) and the diffuser (4) each form one of the three sealing surfaces, and wherein a sealing element is provided in the closed delta seal groove (10) which seals the fan housing (2), the diffuser housing (3) and the diffuser (4) relative to one another.
2. The fan arrangement (1) according to claim 1, wherein the three sealing surfaces of the enclosed delta seal groove (10) are arranged in a right triangle.
3. The fan apparatus (1) according to claim 1 or 2, wherein the sealing surface of the closed triangulation sealing groove (10) formed by the diffuser (4) is formed on a radially outer surface (5) of the diffuser.
4. A fan unit (1) according to claim 3, characterized in that said sealing element acts on said diffuser (4) only in a radial direction.
5. A fan arrangement (1) according to claim 1 or 2, characterized in that the sealing surface at the fan housing (2) is formed by an axial surface (6) facing the diffuser housing (3).
6. A fan unit (1) according to claim 5, characterised in that the axial surface (6) of the fan housing (2) facing the diffuser housing (3) extends perpendicularly to the sealing surface formed by the diffuser (4).
7. A fan unit (1) according to claim 1 or 2, characterized in that the sealing surface at the diffuser housing (3) is formed by a cone side surface (7).
8. A fan unit (1) as claimed in claim 1 or 2, characterised in that the sealing element is formed by an elastic sealing ring (8) having a circular cross-section.
9. The fan unit (1) according to claim 8, wherein the ratio of the cross-sectional area A of the seal ring (8) to the cross-sectional area B of the triangular groove is in the range of 0.6< A/B < 0.72.
10. A fan unit (1) as claimed in claim 6, wherein the diffuser (4) has a radial peripheral portion (9) which abuts against the axial surface (6) of the fan housing (2).
11. Fan unit (1) according to claim 1 or 2, characterized in that the diffuser (4) comprises an axial abutment surface facing the fan housing (2) and an engagement portion (19 ') projecting axially with respect to the abutment surface, wherein the engagement portion (19') projects into a fan housing opening in the assembled state to the fan housing (2).
12. A fan unit (1) according to claim 7, characterized in that the diffuser housing (3) and the diffuser (4) have an overlap (13, 15, 16) extending axially parallel to the outer side surface of the diffuser, which overlap directly adjoins the cone side surface (7) formed by the diffuser housing (3) such that the diffuser housing (3) and the diffuser (4) at least partially directly abut flat.
13. Fan device (1) according to claim 1 or 2, characterized in that an axial stop (19) is formed on the diffuser housing (3), against which the diffuser (4) abuts, wherein the axial stop determines the position of the diffuser in the diffuser housing (3).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018128255.9A DE102018128255A1 (en) | 2018-11-12 | 2018-11-12 | Blower device |
| DE102018128255.9 | 2018-11-12 | ||
| PCT/EP2019/079392 WO2020099107A1 (en) | 2018-11-12 | 2019-10-28 | Fan device comprising a closed triangular sealing groove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112955666A CN112955666A (en) | 2021-06-11 |
| CN112955666B true CN112955666B (en) | 2022-09-23 |
Family
ID=68392995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980072845.2A Active CN112955666B (en) | 2018-11-12 | 2019-10-28 | Fan device comprising closed triangular sealing groove |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3847373B1 (en) |
| CN (1) | CN112955666B (en) |
| DE (1) | DE102018128255A1 (en) |
| PL (1) | PL3847373T3 (en) |
| WO (1) | WO2020099107A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2078864A1 (en) * | 2008-01-11 | 2009-07-15 | MAICO ELEKTROAPPARATE-FABRIK GmbH | Pipe ventilator |
| CN103216456A (en) * | 2012-01-19 | 2013-07-24 | 戴森技术有限公司 | Fan impeller housing seal and resilient support |
| EP2686609A2 (en) * | 2011-03-15 | 2014-01-22 | EBM-PAPST Landshut GmbH | Mixing device for mixing combustion air and gas for a gas appliance |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602004012000T2 (en) * | 2004-11-08 | 2009-02-12 | Honeywell International Inc. | COMPRESSORS WITH VARIABLE GEOMETRY |
| JP2011064118A (en) * | 2009-09-16 | 2011-03-31 | Mitsubishi Heavy Ind Ltd | Centrifugal compressor |
| GB2493976B (en) * | 2011-08-26 | 2014-08-13 | Dyson Technology Ltd | Turbomachine |
| DE102012223462B3 (en) * | 2012-12-17 | 2013-08-08 | Siemens Aktiengesellschaft | Housing of fluid flow machine e.g. compressor, has seal that is arranged to seal the common contact surface in which the sealing elements are arranged, and sealing elements that are arranged axially relative to each other |
| US10066639B2 (en) * | 2015-03-09 | 2018-09-04 | Caterpillar Inc. | Compressor assembly having a vaneless space |
-
2018
- 2018-11-12 DE DE102018128255.9A patent/DE102018128255A1/en not_active Withdrawn
-
2019
- 2019-10-28 CN CN201980072845.2A patent/CN112955666B/en active Active
- 2019-10-28 EP EP19795539.6A patent/EP3847373B1/en active Active
- 2019-10-28 WO PCT/EP2019/079392 patent/WO2020099107A1/en unknown
- 2019-10-28 PL PL19795539T patent/PL3847373T3/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2078864A1 (en) * | 2008-01-11 | 2009-07-15 | MAICO ELEKTROAPPARATE-FABRIK GmbH | Pipe ventilator |
| EP2686609A2 (en) * | 2011-03-15 | 2014-01-22 | EBM-PAPST Landshut GmbH | Mixing device for mixing combustion air and gas for a gas appliance |
| CN103216456A (en) * | 2012-01-19 | 2013-07-24 | 戴森技术有限公司 | Fan impeller housing seal and resilient support |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020099107A1 (en) | 2020-05-22 |
| EP3847373B1 (en) | 2022-01-26 |
| DE102018128255A1 (en) | 2020-05-14 |
| PL3847373T3 (en) | 2022-04-19 |
| EP3847373A1 (en) | 2021-07-14 |
| CN112955666A (en) | 2021-06-11 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| GR01 | Patent grant |