NZ778318B2 - Extractor assembly to be installed inside an air duct - Google Patents
Extractor assembly to be installed inside an air duct Download PDFInfo
- Publication number
- NZ778318B2 NZ778318B2 NZ778318A NZ77831819A NZ778318B2 NZ 778318 B2 NZ778318 B2 NZ 778318B2 NZ 778318 A NZ778318 A NZ 778318A NZ 77831819 A NZ77831819 A NZ 77831819A NZ 778318 B2 NZ778318 B2 NZ 778318B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- extractor assembly
- assembly according
- air
- actuating element
- impeller
- 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/06—Helico-centrifugal 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
- F04D17/165—Axial entry and discharge
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
- F04D29/329—Details of the hub
-
- 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
- F04D29/4253—Fan casings with axial entry and discharge
-
- 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
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
- F04D29/526—Details of the casing section radially opposing blade tips
-
- 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
-
- 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
-
- 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
- F04D29/663—Sound attenuation
-
- 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
- F05D2250/52—Outlet
Abstract
Extractor assemblies produce noise as a result of the movement of air along discontinuities. The present invention decreases the noise by having joining areas that overlap instead of abutting. An extractor assembly to be installed inside an air duct, the extractor assembly comprising: an impeller having a base and blades, the blades projecting from the base; an actuating element for imparting rotational momentum to the impeller such that it generates an air flow by means of the blades; a support having a first face and a second face, the first face being for fixed arrangement of the actuating element; a case comprising a first portion and a second portion for surrounding the impeller, actuating element and support; wherein the support comprises: an internal wall that determines, with a first face, a housing for accommodating the actuating element; and an external wall, which is disposed radially and externally with respect to the internal wall, such that the walls define a passage for the movement of air; and, wherein, when the extractor assembly is mounted in a use position, the external wall makes radial and internal contact against the first portion and the second portion, as well as against a joining area of the first portion and the second portion with each other, such that an air outlet along the external wall remains blocked, and wherein the joining area is formed by an overlap between the first portion and the second portion.
Claims (15)
1. An extractor assembly to be installed inside an air duct, the extractor assembly comprising: 5 - an impeller having a base and blades, the blades projecting from the base; - an actuating element for imparting rotational momentum to the impeller such that it generates an air flow by means of the blades; - a support having a first face and a second face, the first face being for fixed arrangement of the actuating element; 10 - a case comprising a first portion and a second portion for surrounding the impeller, actuating element and support; wherein the support comprises: - an internal wall that determines, with a first face, a housing for accommodating the actuating element; and 15 - an external wall, which is disposed radially and externally with respect to the internal wall, such that the walls define a passage for the movement of air; wherein, when the extractor assembly is mounted in a use position, the external wall makes radial and internal contact against the first portion and the 20 second portion, as well as against a joining area of the first portion and the second portion with each other, such that an air outlet along the external wall remains blocked, and wherein the joining area is formed by an overlap between the first portion and the second portion.
2. The extractor assembly according to claim 1, wherein the external wall is disposed in contact against the entire joining area.
3. The extractor assembly according to claim 1 or 2, wherein the support 30 comprises fins in the passage to direct the air flow.
4. The extractor assembly according to claim 3, wherein the fins are curved in order to eliminate a tangential component of the air flow generated by the blades such that the air flow can be directed according to a rectilinear path.
5. The extractor assembly according to any one of claims 1 to 3, wherein, when the actuating element is disposed fixed in the support and the impeller is joined to the actuating element, a separating gap is disposed between the base and the internal wall for an air inlet into the actuating element.
6. The extractor assembly according to any one of claims 1 to 4, further comprising a cover disposed along the second face of the support such that it determines a continuation of the passage. 10
7. The extractor assembly according to claim 6, wherein the cover has a concave side for covering components of the extractor assembly and a convex side for guiding the air.
8. The extractor assembly according to any one of claims 1 to 7, further 15 comprising a conduit disposed communicating an external portion of the case with the housing.
9. The extractor assembly according to claim 8, wherein the conduit has a first section externally projecting with respect to the external wall and each of 20 the portions of the case has a slot to jointly define a gap for receiving the first section.
10. The extractor assembly according to any one of claims 1 to 9, wherein the impeller additionally has a panel to prevent contact of the air with the case 25 along the blades.
11. The extractor assembly according to claim 10, further comprising a blocking element disposed to prevent air from moving between the case and the panel, such that the air entering the case is guided between the panel and the 30 base.
12. The extractor assembly according to any one of claims 1 to 11, wherein the case comprises a metal material. 35
13. The extractor assembly according to any one of claims 1 to 12, wherein the support comprises a plastic material.
14. The extractor assembly according to any one of claims 1 to 13, wherein the impeller comprises a plastic material.
15. The extractor assembly according to any one of claims 1 to 14, substantially as herein described with reference to any embodiment disclosed. (TWA I
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201930092A ES2777923B2 (en) | 2019-02-06 | 2019-02-06 | EXTRACTOR ASSEMBLY TO BE INSTALLED INTERCATED IN AN AIR DUCT |
| PCT/ES2019/070899 WO2020161369A1 (en) | 2019-02-06 | 2019-12-30 | Extractor assembly to be installed inside in an air duct |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ778318A NZ778318A (en) | 2024-07-05 |
| NZ778318B2 true NZ778318B2 (en) | 2024-10-08 |
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