CN218093526U

CN218093526U - Ventilation fan for building

Info

Publication number: CN218093526U
Application number: CN202222418388.XU
Authority: CN
Inventors: 邓立军; 承珍珍; 骆齐胜; 叶春雷
Original assignee: Wuhu Yingang Construction Co ltd
Current assignee: Wuhu Yingang Construction Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2022-12-20
Anticipated expiration: 2032-09-13

Abstract

The application discloses ventilating fan for building belongs to the ventilation technology field. The fan mainly comprises a shell, wherein a supporting beam is fixed in the shell, one side of the supporting beam is rotatably connected with a rotating shaft, a fan shaft is fixedly arranged on the rotating shaft, and fan blades are fixedly arranged on the surface of the fan shaft; the fan comprises a fan blade, a fan shaft, a fan blade and a fan blade, wherein the fan blade is provided with a fan blade, the fan blade is arranged on the fan blade, the fan blade is provided with a clamping block, the fan blade is provided with at least two sealing grooves corresponding to the clamping block on the surface, at least one end of the clamping block is provided with a fixing hole, the inner wall of the clamping block is provided with a through hole with the same position as the fixing hole, one side of the fan blade is provided with a plurality of fixing piles, and the fixing hole and the through hole are sleeved on the fixing piles. Through demolising the spud pile, remove the fixed between fixed orifices and the perforating hole, can demolish the flabellum from the pivot to change different shape flabellums, perhaps through the flabellum installation quantity in the adjustment seal groove, adjust the quantity of ventilation fan flabellum, reach the effect of adjustment ventilation fan flabellum shape and quantity. The utility model provides a problem that ventilating fan flabellum shape and quantity can not be adjusted is solved to ventilating fan for building.

Description

Ventilation fan for building

Technical Field

The application relates to the technical field of ventilation devices, in particular to a ventilating fan for buildings.

Background

The ventilating fan is an air conditioning appliance which drives fan blades to rotate by a motor to drive airflow so as to exchange air inside and outside a building. The shape of the fan blades and the number of the fan blades are different, wherein the shape of the fan blades generally has a sickle shape, a trapezoid shape and a folded edge shape.

Under the condition that the number, size and rotating speed of the fan blades are the same, the sickle-shaped rotating is quieter, but the wind pressure is smaller; when the trapezoid rotates, the wind pressure is high, but the noise is also high; the folded edge-shaped wind pressure and noise are positioned between the folded edge-shaped wind pressure and the noise.

In the case where the blade shape, the blade size, and the rotation speed are the same, the smaller the number of blades, the greater the generated wind pressure, but the greater the operating noise.

When the ventilating fan is installed on a building, if the ventilating fan is close to a place needing a quiet environment, such as a residential place or an office place, a ventilating fan with low noise is generally needed, and other places can use a ventilating fan with high noise and high wind pressure to ensure the ventilation strength.

However, in practical application, since the purchased ventilation fans are generally integrated, if the type of the purchased ventilation fan needs to be selected according to the surrounding environment, the selection is difficult, and the installation speed is reduced; if install a ventilating fan entirely, not only be difficult to adapt to various places, in addition the installation in case will adjust in addition, can only with the whole change of ventilating fan, lead to the replacement cost too high.

Therefore, there is a need for a ventilating fan for buildings, which can adjust the shape and number of the fan blades to solve the above problems.

It should be noted that the above information disclosed in this background section is only for background purposes in understanding the inventive concept, and therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems in the prior art, the embodiments of the present application aim to: the utility model provides a ventilating fan for building, solves the problem that ventilating fan flabellum shape and quantity can not be adjusted.

The technical scheme adopted by the application for solving the technical problem is as follows: a ventilating fan for buildings comprises a shell, wherein a supporting beam is fixed inside the shell, one side of the supporting beam is rotatably connected with a rotating shaft, a fan shaft is fixedly installed on the rotating shaft, and fan blades are fixedly installed on the surface of the fan shaft;

the fan blade end is fixed with the block, the fan shaft surface is provided with two at least seal grooves that correspond with the block, the at least one end of block is provided with the fixed orifices, the block inner wall of block is provided with the perforating hole the same with the fixed orifices position, fan shaft one side is provided with a plurality of spud piles, fixed orifices and perforating hole cover are located on the spud pile, and the spud pile is used for fixing between fixed orifices and the perforating hole.

Through demolising the spud pile, remove the fixed between fixed orifices and the perforating hole, can demolish the flabellum from the pivot to change the flabellum of different shapes, perhaps through the quantity of the installation of the flabellum in the adjustment seal groove, adjust the quantity of ventilation fan flabellum, reach the effect of adjustment ventilation fan flabellum shape and quantity.

Furthermore, the fixing pile is in threaded connection with the fixing hole, so that the fixing pile is prevented from being separated from the fixing hole or the through hole.

Furthermore, one end of the fixing pile, which is far away from the fixing hole, extends out of the through hole, and is fixed with a baffle plate for increasing the fixing strength between the fan shaft and the fan blade.

Furthermore, the clamping block is of a non-centrosymmetric structure and used for identifying the installation direction of the fan blades.

Furthermore, a sealing plate is fixed at one end, close to the fan blade, of the clamping block and used for preventing impurities from entering the sealing groove.

The fan blade sealing structure further comprises a filling block which is the same as the clamping block in shape but lacks fan blades and is used for filling the sealing groove of the clamping block which is not assembled.

The beneficial effect of this application is: the application provides a pair of ventilating fan for building through changing flabellum shape or adjusting flabellum installation quantity, makes ventilating fan facilitate the use, can pull down direct adjustment at any time, has solved ventilating fan and has been difficult to adjust at any time, problem that the replacement cost is big.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is an overall schematic view of a ventilating fan for buildings according to the present application;

FIG. 2 is an exploded view of a ventilation fan for a building shown in FIG. 1;

FIG. 3 is an exploded view of the fan shaft of FIG. 2;

FIG. 4 is a general schematic view of the fan blade assembly of FIG. 3;

wherein, in the figures, the various reference numbers:

1. a housing; 11. a stationary housing; 12. a fixed tube; 13. a first filter screen; 14. a second filter screen; 15. a support beam;

2. a drive device; 21. a rotating shaft; 22. a driven wheel; 23. a driver; 24. a driving wheel; 25. a transmission belt;

3. a fan shaft; 31. a sealing groove; 32. a clamping groove; 33. a through hole;

4. a fan blade assembly; 41. sealing plates; 42. a clamping block; 43. a fixing hole; 44. a fan blade;

5. and (4) bolts.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing embodiments of the invention herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

As shown in fig. 1 to 4, the present application provides a ventilating fan for buildings, which comprises a housing 1, a driving device 2 located inside the housing 1, a fan shaft 3 located on the driving device 2, and a fan blade assembly 4 mounted on the fan shaft 3.

Shell 1 includes hollow set casing 11, and one side of set casing 11 is fixed with solid fixed tube 12, gu fixed

tube

12 and 11 inside intercommunications of set casing, and one side that solid fixed tube 12 was kept away from to set casing 11 is the opening form, and is fixed with first filter screen 13, and the one end that solid fixed casing 11 was kept away from to gu fixed tube 12 is fixed with

second filter screen

14, and 11 inside fixed supporting beams 15 that have of set casing.

The driving device 2 includes a rotating shaft 21 rotatably connected to the supporting beam 15, a rotation axis of the rotating shaft 21 is collinear with an axis of the fixed pipe 12, one end of the rotating shaft 21 close to the supporting beam 15 is fixed with a driven wheel 22, a driver 23 is fixed inside the fixed shell 11, in this embodiment, the driver 23 is a motor, an output shaft of the driver 23 is fixed with a driving wheel 24, and the driving wheel 24 and the driven wheel 22 are sleeved with a same transmission belt 25.

The fan shaft 3 is fixed at one end of the rotating shaft 21 far away from the supporting beam 15, a sealing groove 31 is formed on the side wall of the fan shaft 3 in a concave manner, at least two engaging grooves 32 are uniformly distributed in the sealing groove 31, in the embodiment, twelve engaging grooves 32 are arranged, through holes 33 with the number equal to that of the engaging grooves 32 are arranged at the front end and the rear end of the fan shaft 3, and the through holes 33 are communicated with one end close to the inside of the engaging grooves 32.

The number of the fan blade assemblies 4 is the same as that of the sealing groove 31, each fan blade assembly 4 includes a sealing plate 41, the sealing plate 41 is located in the sealing groove 31, one side of the sealing plate 41 close to the rotating shaft 21 is fixed with an engaging block 42 corresponding to the engaging groove 32, the width of one end of the engaging block 42 close to the supporting beam 15 is greater than that of the other end, both ends of the engaging block 42 are provided with fixing holes 43, the positions of the fixing holes 43 and the through holes 33 on the same side are the same, one side of part of the sealing plate 41 away from the rotating shaft 21 is fixed with fan blades 44, in this embodiment, one side of six sealing plates 41 away from the rotating shaft 21 is fixed with fan blades 44.

Bolts 5 are arranged at the front end and the rear end of the fan shaft 3, the positions of the bolts are the same as those of the through holes 33, and one end of each bolt 5 penetrates through the through hole 33 and is in threaded connection with the fixing hole 43.

It is understood that the fan blades 44 can be provided in a variety of shapes, such as sickle-shaped (not shown), trapezoidal (not shown), folded edge, etc.

In the present embodiment, a plurality of types of blade assemblies 4 having blades 44 and a plurality of blade assemblies 4 having no blades 44 may be prepared in advance when they are mounted. Upon arrival at the installation site, the appropriate type of blade assembly 4 for blade 44, and the number of such blade assemblies 4, are selected as desired.

After selecting the proper type of fan blade assembly 4, the engaging block 42 of the fan blade assembly 4 is inserted into the engaging slot 32, because the width of the engaging block 42 near one end of the supporting beam 15 is larger than that of the other end, and the engaging slot 32 corresponds to the engaging block 42, the fan blade assembly 4 can only be installed in a fixed direction, so that when the fan blade assembly 4 is installed, the fan blade 44 is prevented from being installed reversely.

After the engagement block 42 is inserted into the engagement groove 32, the two bolts 5 are removed, and one ends of the two bolts 5 are inserted into the through holes 33 at the one end, respectively, and then are inserted into the fixing holes 43 at the one end, respectively. Then, the bolt 5 is rotated to screw the bolt 5 and the fixing hole 43, and the bolt is continuously inserted into the fixing hole 43. Eventually, the through hole 33 blocks the bolt 5, and the bolt 5 cannot move any further. At this time, the bolts 5 are continuously rotated to tighten the same, and the bolts 5 at both sides stretch both ends of the engaging block 42, so that the engaging block 42 is fixed in the engaging groove 32, thereby completing the inside of one fan blade assembly 4.

The above steps are repeated continuously and fan blade assemblies 4 of the type suitable for fan blades 44 are mounted uniformly on the side of fan shaft 3. If there is an engagement groove 32 where the blade assembly 4 is not attached after the attachment, the blade assembly 4 without the blade 44 is attached to the remaining engagement groove 32 in the same manner.

After fan blade assembly 4 is installed, fan shaft 3 is fixedly installed on rotating shaft 21, fixing pipe 12 is installed on fixing shell 11, and finally, housing 1 is installed in a ventilation duct in a building, as shown in fig. 2.

In conclusion, the number of the fan blades 44 and the type of the fan blades 44 of the ventilating fan can be selected and adjusted during installation. The problem of among the prior art, the ventilating fan is improper, needs whole change is solved.

In the using process, the driver 23 drives the driving wheel 24 to rotate, the driving wheel 24 drives the driven wheel 22 to rotate through the transmission belt 25, so that the driven wheel 22 drives the fan shaft 3 to rotate through the rotating shaft 21, the fan blades 44 rotate to generate air flow, ventilation is performed through the ventilation duct, and the first filter screen 13 and the second filter screen 14 are used for blocking large impurities such as leaves from entering.

During ventilation, the opening of the engagement groove 32 is blocked by the sealing plate 41, and the through hole 33 is blocked by the bolt 5, so that impurities in the air can be prevented from entering the engagement groove 32.

In summary, the effect of preventing impurities from accumulating in the engaging groove 32 while performing ventilation is achieved.

If the type or the number of the fan blades 44 needs to be adjusted during the use process, the housing 1 is only required to be detached from the ventilation duct in the building, then the fixing pipe 12 is detached, and then the fan shaft 3 is detached. The blade assembly 4 can be replaced by unscrewing the bolt 5, and the sealing plate 41 prevents impurities from entering the engaging groove 32, thereby preventing the impurities from increasing resistance in the process of pulling out or inserting the engaging block 42 into the engaging groove 32. After the fan blade assembly 4 is replaced, the fan shaft 3, the fixing pipe 12 and the shell 1 can be sequentially arranged back to reset, the effect of conveniently replacing and adjusting the quantity and types of the fan blades 44 is achieved, and the problem that in the prior art, the whole ventilating fan needs to be replaced when replaced is solved.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a ventilation fan for building, includes shell (1), shell (1) inside is fixed with a supporting beam (15), a supporting beam (15) one side is rotated and is connected with pivot (21), fixed mounting has fan shaft (3) on pivot (21), fan shaft (3) fixed surface installs two at least flabellums (44), its characterized in that:

the fan blade (44) end is fixed with block (42), fan shaft (3) surface is provided with two at least seal groove (31) that correspond with block (42), block (42) one end at least is provided with fixed orifices (43), block (42) inner wall is provided with perforating hole (33) the same with fixed orifices (43) position, fan shaft (3) one side is provided with a plurality of spud piles, on the spud pile was located to fixed orifices (43) and perforating hole (33) cover, the spud pile was used for with fixed orifices (43) and perforating hole (33) between fixed orifices (43).

2. A ventilating fan for construction according to claim 1, wherein: the fixing pile is in threaded connection with the fixing hole (43), so that the fixing pile is prevented from being separated from the fixing hole (43) or the through hole (33).

3. A ventilating fan for construction according to claim 1, wherein: one end of the fixing pile, which is far away from the fixing hole (43), extends out of the through hole (33) and is fixed with a baffle plate for increasing the fixing strength between the fan shaft (3) and the fan blade (44).

4. A ventilating fan for construction according to claim 1, wherein: the clamping block (42) is of a non-centrosymmetric structure and is used for identifying the installation direction of the fan blade (44).

5. A ventilating fan for construction according to claim 1, wherein: and a sealing plate (41) is fixed at one end of the clamping block (42) close to the fan blade (44) and used for blocking impurities from entering the sealing groove (31).

6. A ventilating fan for buildings according to claim 1, characterized in that: the fan blade assembly also comprises a filling block which has the same shape as the clamping block (42) but lacks fan blades (44) and is used for filling a sealing groove (31) of the clamping block (42) which is not assembled.