HOUSING FOR A VENTILATOR OR FAN
The invention relates to a housing for a ventilator (1) or fan, in particular an axial ventilator, comprising an annular housing wall (2) which encloses a flow channel (3) having an inflow opening (4) and an outflow opening (6). The flow channel (3) has a circular cross-section in a plane which is perpendicular to a center longitudinal axis (X-X) and a motor mount (7) for an electrical motor (8) of the ventilator (1) within the flow channel (3). The flow channel (3) has a first cylinder section (9), connected to the inflow opening (4), and a second truncated cone section (11), connected thereto by the small truncated cone surface, which expands toward the outflow opening (6). The mount (7) consists of a plurality of stays (12), fastened by one end to the second truncated cone section (11), which extend from an inner circumferential surface of the truncated cone section (11) in the direction of the longitudinal axis (X-X) and have, on the other, internal ends, mount sections for the electrical motor (8). According to the invention, there are fastening means (24, 26) of the housing wall (2) in the region of the inflow opening (4) for connection to a connection part, in particular a wall ring (49a, b, c, d) and having fastening means (28) in the edge region of the outflow opening (6) thereof for a protective grate (23) and/or fastening means (29, 31) for fastening an outside diffuser (37) to the housing wall (2) in the region of the outflow opening (6).
The present invention relates to a housing for a fan or blower, especially an axial fan, comprising an annular housing all that surrounds a flow channel with an inflow opening and an outflow opening as well as with a central longitudinal axis, whereby the flow channel has a circular cross section in a plane that is perpendicular to its central longitudinal axis, and it also relates to a motor mount for an electric motor of the fan inside the flow channel.
With such prior-art housings, see U.S. Pat. No. 2,144,035, the housing, the wall ring and an external diffuser form a uniform molded part made of sheet metal, resulting in relatively high production costs, in addition to which, the individual parts are not suitable to be combined with other components.
The present invention is based on the objective of improving a housing of the type described above in such a way as to attain a wide array of application possibilities.
This is achieved according to the invention in that the flow channel has a first cylindrical section that adjoins the inflow opening as well as a second truncated conical section which, with its smaller truncated conical surface, adjoins the first section and widens towards the outflow opening, whereby the mount consists of several struts that are attached at one end to the second section, that run from an inner circumferential surface of the second section in the direction of the longitudinal axis, and that have mounting sections for the electric motor at their other, inner end, as well as fastening means on an outer surface of the ring wall in the area of the inflow opening for joining to a connecting part, especially a wall ring, as well as fastening means in the edge area of the outflow opening for a protective grill and/or fastening means for attaching an external diffuser to the housing wall in the area of the outflow opening, in this manner, the housing according to the invention forms a base part that, since it is configured to comply with solutions tailored for individual clients, can be expanded by using different wall rings and/or by augmenting it by adding an external diffuser or an internal diffuser. Here, the housing according to the invention permits an application for a support ring with a short nozzle. Moreover, the housing according to the invention ensures a centered arrangement of the fan. The additional components that are to be attached to the housing according to the invention such as, for example, a wall ring, an external diffuser and an internal diffuser, can be assembled with the housing according to the invention and especially can be joined to each other in a simple manner using screwed connections.
Advantageous embodiments of the invention are contained in the subordinate claims and are explained in greater detail with reference to the embodiments depicted in the accompanying drawings. The following is shown:
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The housing according to the invention thus forms a universal module part that can be combined in a variety of ways with customer-specific wall rings 49a, b, c, d and with an external diffuser 34 and an internal diffuser 42 as well as with the protective grill 23. The housing according to the invention, including the struts 12 as well as the holding ring 13 and the fastening means, forms a one-piece plastic part that can already be used without additional accessory parts.
The invention is not limited to the embodiments shown and described, but rather, it encompasses all embodiments that have the same effect as set forth in the invention. Moreover, the invention is not yet limited to the feature combinations defined in the claims, but rather, it can also be defined by any other desired combination of certain features from among all of the individual features altogether disclosed. This means that fundamentally speaking, practically any individual feature of the independent claims can be left out or replaced by at least one individual feature disclosed in another place in the application. Consequently, the claims are only to be understood as an initial attempt at formulating an invention.
LIST OF REFERENCE NUMERALS
- 1 fan
- 2 housing wall
- 3 flow channel
- 4 inflow opening
- 6 outflow opening
- 7 motor mount
- 8 electric motor
- 9 first cylindrical section
- 11 truncated conical section
- 12 struts
- 13 mount
- 14 strut section, parallel
- 16 angled section
- 17 recesses
- 18 recesses
- 19 ribs
- 21 screw holes
- 22 screws
- 23 protective grill
- 24 fastening means
- 26 sleeve-like projections
- 27 reinforcement ribs
- 28 fastening means
- 29 slanted surface
- 31 ribs
- 32
- 33
- 34 external diffuser
- 36 inlet opening
- 37 outlet opening
- 38 screw lug
- 39 centering edge
- 41 projections
- 42 internal diffuser
- 43 covering lid
- 44 front channel section
- 46 rear channel section
- 47 stop step
- 48 channel section in the transition area
- 49a wall ring
- 49b wall ring
- 49c wall ring
- 49d wall ring
- 51a nozzle-like projection
- 51b nozzle-like projection
- 51c nozzle-like projection
- 51d nozzle-like projection
- 52 screwed connection
- X-X longitudinal axis
Claims
1. A housing for a fan (1) or blower, especially an axial fan, comprising an annular housing wall (2) that surrounds a flow channel (3) with an inflow opening (4) and an outflow opening (6), whereby the flow channel (3) has a circular cross section in a plane that is perpendicular to a central longitudinal axis (X-X), also comprising a motor mount (7) for an electric motor (8) of the fan (1) inside the flow channel (3), characterized in that the flow channel (3) has a first cylindrical section (9) that adjoins the inflow opening (4) as well as a second truncated conical section (11) which, with its small truncated conical surface, adjoins the first section and widens towards the outflow opening (6), whereby the mount (7) consists of several struts (12) that are attached at one end to the second truncated conical section (11), that run from an inner circumferential surface of the second truncated conical section (11) in the direction of the longitudinal axis (X-X), and that have mounting sections for the electric motor (8) at their other, inner ends, and there are fastening means (24, 26) of the housing wall (2) in the area of the inflow opening (4) for joining to a connecting part, especially a wall ring (49a, b, c, d), as well as fastening means (28) in the edge area of its outflow opening (6) for a protective grill (23) and/or fastening means (29, 31) for attaching an external diffuser (37) to the housing wall (2) in the area of the outflow opening (6).
2-10. (canceled)
11. A housing for a fan (1) or blower, especially an axial fan, comprising an annular housing wall (2) that surrounds a flow channel (3) with an inflow opening (4) and an outflow opening (6), whereby the flow channel (3) has a circular cross section in a plane that is perpendicular to a central longitudinal axis (X-X), and it also relates to a motor mount (7) for an electric motor (8) of the fan (1) inside the flow channel (3), whereby the flow channel (3) has a first cylindrical section (9) that adjoins the inflow opening (4) as well as a second truncated conical section (11) which, with its small truncated conical surface, adjoins the first section and widens towards the outflow opening (6), whereby the mount (7) consists of several struts (12) that are attached at one end to the second truncated conical section (11), that run from an inner circumferential surface of the second truncated conical section (11) in the direction of the longitudinal axis (X-X), and that have mounting sections for the electric motor (8) at their other, inner ends, characterized in that there are fastening means (24, 26) of the housing wall (2) in the area of the inflow opening (4) for joining to a connecting part, as well as fastening means (28) in the edge area of its outflow opening (6) for a protective grill (23) and fastening means (29, 31) for attaching an external diffuser (37) to the housing wall (2) in the area of the outflow opening (6).
12. The housing according to claim 11, characterized in that the struts (12), starting from the inner circumferential surface of the truncated conical section (11), have strut sections (14) running parallel to the opening plane of the outflow opening (6), and these strut sections (14) adjoin angled sections (16) that run in the direction of the first cylindrical section (9) at an acute angle to the opening plane, the holding sections being formed at the free ends of said angled sections (16), whereby the holding sections are especially combined to form a continuous holding ring (13) whose inner diameter is adapted to the outer diameter of the electric motor (8).
13. (Ne) The housing according to claim 12, characterized in that the holding ring (13), with its opening plane that is perpendicular to the longitudinal axis (X-X), runs in the transition area from the first cylindrical section (9) to the second truncated conical section (11).
14. The housing according to claim 11, characterized in that three to eight struts (12) are configured along the circumference at equal distances from each other.
15. The housing according to claim 11, characterized in that the housing wall (2), including the struts (12) and the holding ring (13) as well as the various fastening means (24, 28, 29, 31) are configured as a one-piece plastic molded part.
16. The housing according to claim 11, characterized in that the first cylindrical section (9), starting from the inflow opening (4), has a front channel section (44) that has a larger inner diameter than a rear channel section (46) that adjoins it via a step, whereby said rear channel section (46) has a stop step (47) configured to decrease the diameter, and it makes a transition to the channel section (48) that runs in a transition area from the cylindrical section (9) to the truncated conical section (11).
17. The housing according to claim 11, characterized in that an external diffuser (34) can be attached to the housing wall (2) in the area of the outflow opening (6) by means of a plug-in connection.
18. The housing according to claim 11, characterized in that the protective grill (33) can be attached to the annular housing wall (2) in the area of the outflow opening (6) by means of a screwed connection.
19. The housing according to claim 11, characterized in that a wall ring (49a, b, c, d) can be attached to the housing wall (2) in the area of the front channel section (44) or in the area of the channel section (46) by means of a nozzle-like projection (51a, b, c, d) and/or in the area of the inflow opening (4) via a screwed connection by means of sleeve-like projections (26) on the outer circumference of the cylindrical section (29).
20. The housing according to claim 11, characterized in that, inside the external diffuser (34),there is an internal diffuser (42) that is attached at one end to the motor mount (7) and at the other and to a protective grill (23) that covers the external diffuser (34) at its outlet opening (37).
21. The housing according to claim 11, cl characterized in that the connecting part is a wall ring (49a, b, d).
Type: Application
Filed: Aug 21, 2013
Publication Date: Sep 10, 2015
Inventors: Thomas Sauer (Bad Mergentheim), Dieter Best (Ingelfingen), Tobias Ehmann (Neuenstein), Volker Hufnagel (Rothenburg o.d. Tbr.), Sebastian Hoss (Bad Mergentheim)
Application Number: 14/433,137