CN216429989U - Fan of steady operation - Google Patents
Fan of steady operation Download PDFInfo
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- CN216429989U CN216429989U CN202122312038.0U CN202122312038U CN216429989U CN 216429989 U CN216429989 U CN 216429989U CN 202122312038 U CN202122312038 U CN 202122312038U CN 216429989 U CN216429989 U CN 216429989U
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- main shaft
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Abstract
The utility model discloses a fan with stable operation, which comprises a casing, a fan body and a fan blade, wherein the casing is provided with a cavity for air to pass through, and the side wall of the casing is provided with an air inlet and an air outlet; the impeller is rotatably arranged in the shell and used for increasing the gas pressure and discharging gas; the main shaft is rotatably supported on the shell, penetrates through the impeller and is connected with the impeller in a rotation stopping manner; the power component is associated with the main shaft to drive the main shaft to rotate; and the supporting structure is arranged on the side wall of one side of the shell provided with the air inlet, and one end of the main shaft corresponding to the air inlet is supported on the supporting structure through a first bearing. The utility model discloses a set up bearing structure, support the one end that the main shaft is close to the air intake, reduce rocking of main shaft, and then guarantee the stability of impeller, guarantee fan safe and stable operation, improve fan efficiency and noise reduction. In addition, the supporting structure is directly arranged on the casing, so that the occupied space is small, and the installation of the fan is facilitated.
Description
Technical Field
The utility model belongs to the technical field of the fan, especially, relate to a steady operation's fan.
Background
With the development of the building industry, modern buildings built in recent years are generally provided with a fire-fighting smoke exhaust system, underground system engineering such as tunnels has the characteristics of small space, high ventilation requirement and the like, and a fire-fighting smoke exhaust fan is always used for daily ventilation. Thus, higher requirements are provided for the fire-fighting smoke exhaust fan, and the fire-fighting smoke exhaust fan not only needs to meet the normal operation in a fire-fighting state, but also needs to meet the normal operation of ordinary ventilation.
In the present partial axial-flow type fire control smoke exhaust fan, only one end of a main shaft connected with an impeller is supported on a casing, the other end of the main shaft is in a suspended state, and when the main shaft in the state is in operation, the main shaft is easy to shake, so that the stability of the impeller is influenced, and the efficiency of the fan is reduced, and the noise is large. And part of the fan is integrally arranged on an additional base structure, and the base structure is utilized to support the main shaft, so that the mode occupies large space and is not beneficial to the installation of the fan.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome prior art not enough, provide a steady operation's fan.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a fan with stable operation comprises
The air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with a cavity for air flow to pass through, and the side wall of the shell is provided with an air inlet and an air outlet;
the impeller is rotatably arranged in the shell and used for increasing the gas pressure and discharging gas;
the main shaft is rotatably supported on the shell, penetrates through the impeller and is connected with the impeller in a rotation stopping manner;
the power component is associated with the main shaft to drive the main shaft to rotate;
and the supporting structure is arranged on the side wall of one side of the shell provided with the air inlet, and one end of the main shaft corresponding to the air inlet is supported on the supporting structure through a first bearing.
Through setting up bearing structure, support the one end that the main shaft is close to the air intake, reduce rocking of main shaft, and then guarantee the stability of impeller, guarantee fan safe and stable operation, improve fan efficiency and noise reduction. In addition, the supporting structure is directly arranged on the casing, so that the occupied space is small, and the installation of the fan is facilitated.
Optionally, the support structure includes a plurality of single bodies, each single body includes an arc segment, an external connection segment connected to one end of the arc segment, and an internal connection segment connected to the other end of the arc segment; the external connection section extends to the direction far away from the circle center of the arc section and is fixed with the shell; the inner connecting section extends towards the direction far away from the circle center of the arc section, and the inner connecting section is attached and fixed with the outer connecting section on the adjacent monomer.
Optionally, a plurality of the arc segments surround a complete ring, and the first bearing is fixed at the centers of the plurality of the arc segments; and/or two sides of the arc section are respectively provided with a blocking part, and at least part of the outer ring of the first bearing is clamped between the two blocking parts.
Optionally, the angle α between the outer and inner segments is 360 °/n, where n is the number of monomers.
Optionally, the external connection section is a sheet structure, and a plane formed by the external connection section passes through a central line of the main shaft or is parallel to the axis of the main shaft; and one end of the external connection section, which is far away from the arc section, is twisted and then fixed with the shell.
Optionally, a current collector is arranged on the side wall of the casing on the side where the air inlet is arranged, and at least part of the current collector extends into the casing; the maximum vertical distance between the current collector and the side wall of the shell on the side provided with the air inlet is set to be L1, and the minimum vertical distance between the impeller and the side wall of the shell on the side provided with the air inlet is set to be L2, wherein L1> L2.
Optionally, the impeller comprises an impeller rear disc, an impeller front disc and blades arranged between the impeller front disc and the impeller rear disc; the impeller rear disc is connected with the main shaft through a shaft sleeve, and a flange surface connected with the impeller rear disc is arranged on the shaft sleeve; and/or the shaft sleeve is provided with a mounting position, the impeller rear disc is annular, and at least part of one side of the impeller rear disc close to the center is clamped into the mounting position.
Optionally, the power component includes a driven wheel mounted at one end of the main shaft far from the air inlet, a driving wheel disposed outside the housing, a transmission belt connecting the driving wheel and the driven wheel, and a driving member mounted on the housing and having an output shaft connected with the driving wheel; an inner cover for covering the driven wheel and part of the transmission belt is arranged in the shell; an inner cover for covering the driving wheel and the other part of the transmission belt is arranged outside the shell.
Optionally, a bearing seat is arranged on the inner cover, and the spindle is rotatably supported on the bearing seat.
Optionally, the cross section of the whole machine shell along the direction vertical to the axis of the main shaft is square or circular.
To sum up, the utility model discloses a set up bearing structure, support the one end that the main shaft is close to the air intake, reduce rocking of main shaft, and then guarantee the stability of impeller, guarantee fan safe and stable operation, improve fan efficiency and noise reduction. In addition, the supporting structure is directly arranged on the casing, so that the occupied space is small, and the installation of the fan is facilitated.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a perspective view of fig. 1 from another perspective.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a cutaway perspective view of fig. 1.
Fig. 5 is an enlarged view at B in fig. 4.
Fig. 6 is an enlarged view at C in fig. 4.
Fig. 7 is a cross-sectional view of fig. 1.
Fig. 8 is an enlarged view at D in fig. 7.
Fig. 9 is a perspective view of the cell of fig. 1.
Fig. 10 is a circular perspective view of the housing of the present invention.
Fig. 11 is a perspective view of fig. 10 from another perspective.
Fig. 12 is a cutaway perspective view of fig. 10.
Detailed Description
In order to make the technical field personnel understand the utility model discloses the scheme, will combine the drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model carries out clear, complete description.
As shown in fig. 1 to 12, a stably operating fan includes a casing 10, an impeller 20, a main shaft 31, and a power unit; a cavity for air flow to pass through is arranged in the casing 10, and an air inlet 11 and an air outlet 12 are formed in the side wall of the casing 10; the casing 10 is surrounded by a plurality of surrounding plates, however, in other embodiments, the casing 10 may be integrally formed; the impeller 20 is rotatably disposed in the casing 10, and is used for increasing gas pressure and discharging gas; the main shaft 31 is rotatably supported on the casing 10 at a portion of the structure away from the air inlet 11, and penetrates through the impeller 20, and is fixed to the impeller 20 to be connected in a rotation-stopping manner, so as to drive the impeller 20 to rotate; the power unit is associated with the main shaft to drive the main shaft 31 in rotation.
In some embodiments, the cross section of the whole casing 10 along the direction perpendicular to the axis of the main shaft 31 is square, an inlet flange 41 is installed on one side of the casing 10 where the air inlet 11 is arranged, and an outlet flange 42 is installed on one side of the casing 10 away from the air inlet 11, so that the installation and fixation of the fan are facilitated; in this embodiment, the inlet flange 41 and the outlet flange 42 are respectively configured as a polygonal structure; of course, in other embodiments, the shapes of the inlet flange 41 and the outlet flange 42 may be designed according to specific needs.
Of course, in other embodiments, the whole section of the housing 10a along the direction perpendicular to the axis of the spindle 31 is circular, which is suitable for different application environments.
In some embodiments, the impeller 20 includes an impeller back disk 21, an impeller front disk 22, and blades 23; the impeller rear disc 21 is fixed with the main shaft 31 and is driven by the main shaft 31 to rotate; the impeller front disc 22 is positioned on one side of the impeller rear disc 21 close to the air inlet 11 and corresponds to the air inlet 11, the impeller front disc 22 is arc-shaped, and the sectional area of the impeller front disc 22 is gradually increased towards the direction of the impeller rear disc 21; the blades 23 are provided with a plurality of blades 23, the blades 23 are arranged along the circumferential direction of the impeller rear disc 21 at intervals, one end of each blade 23 is connected with the impeller rear disc 21, and the other end of each blade 23 is connected with the impeller front disc 22.
In some embodiments, the impeller back plate 21 is connected with the main shaft 31 through a shaft sleeve 24, and the shaft sleeve 24 is connected with the main shaft 31 through a key to be in rotation stopping fit; the shaft sleeve 24 is provided with a flange surface 241, and the flange surface 241 is fixed with the impeller rear disc 21 through a fastener; the shaft sleeve 24 is provided with a mounting position 242, and the mounting position 242 is an annular groove formed in the flange surface 241; correspondingly, the impeller rear disc 21 is annular, and at least part of one side of the impeller rear disc 21 close to the center is clamped into the mounting position 242, so that the impeller rear disc 21 is quickly positioned, and the assembly efficiency is improved.
In some embodiments, a side wall of the casing 10, on which the air inlet 11 is disposed, is provided with a current collector 25, and the current collector 25 at least partially extends into the casing 10; the collector 25 forms a tapered flow path where the air flow is accelerated to create a uniform velocity and pressure field in front of the inlet of the impeller 20 to reduce flow losses and improve fan efficiency.
In some embodiments, the collector 25 includes a tapered section 251 and a flared section 252, the tapered section 251 is provided in an arc shape, and the cross-sectional area gradually decreases toward the impeller 20; the outward expanding section 252 is located on one side of the tapered section 251 close to the impeller 20, is provided with an arc shape, and is in smooth transition with the tapered section 251, and the sectional area of the outward expanding section 252 gradually increases towards the impeller 20, and is the same as the bending direction of the impeller front disk 22, so that the airflow passing through the current collector 25 is stably transited to the impeller 20, and the flow loss is reduced.
Referring to fig. 8, in some embodiments, the maximum vertical distance between the collector 25 and the side wall of the casing 10 on the side where the air inlet 11 is disposed is L1, and the minimum vertical distance between the impeller front plate 22 and the side wall of the casing 10 on the side where the air inlet 11 is disposed is L2, where L1> L2, so that the collector 25 at least partially protrudes into the central region surrounded by the impeller front plate 22, thereby preventing the air flow from leaking from the gap between the collector 25 and the impeller front plate 22 and reducing the flow loss.
In some embodiments, a supporting structure 50 is mounted on a side wall or a current collector 25 of the casing 10, where the side wall or the current collector is provided with the air inlet 11, and supports an end of the main shaft 31 corresponding to the air inlet 11, so as to improve stability of the main shaft 31 during rotation; a first bearing 52 is arranged between the support structure 50 and the main shaft 31.
Specifically, the supporting structure 50 includes a plurality of single bodies 51 with the same structure, the plurality of single bodies are arranged along the circumferential direction of the main shaft, each single body 51 includes an arc section 511, an external connection section 512 and an internal connection section 513, the arc section 511 is set to be arc, the plurality of arc sections 511 surround to form a complete ring, and then the arc sections 511 on the plurality of single bodies 51 cooperate to fix the first bearing 52; the external connection section 512 is connected with one end of the arc section 511 and extends towards the direction far away from the center of the arc section 511, and one end of the external connection section 512 far away from the arc section 511 is fixed with the current collector 25 or the casing 10; the inner connection section 513 is connected with the other end of the arc section 511 and extends in the direction away from the center of the arc section 511, and the inner connection section 513 is attached and fixed with the outer connection section 512 on the adjacent single bodies 51, so that the single bodies 51 are connected into a whole. The angle α between the outer segment 512 and the inner segment 513 is 360 °/n, where n is the number of monomers 51.
In some embodiments, two sides of the arc segment 511 are respectively provided with a blocking portion 5111, the outer ring of the first bearing 52 is at least partially clamped between the two blocking portions 5111, and the blocking portions 5111 on the two sides are matched to limit the first bearing 52, so that the structure is simple.
In some embodiments, the external connection section 512 is provided as a sheet-shaped structure, and a plane formed by the external connection section 512 passes through a central line of the main shaft 31 or is parallel to an axis of the main shaft 31, so that the external connection section 512 is not easily bent along the axis of the main shaft 31 under the action of the main shaft 31; improving the stability of the support structure 50; the external connecting section 512 is twisted at an end away from the arc section 511 and then fixed with the current collector 25 or the casing 10.
Of course, in other embodiments, the supporting structure 50 may be a unitary structure.
In some embodiments, the power components include a driven wheel 61, a driving wheel 62, a transmission belt 63, and a driving member 64; the driven wheel 61 is mounted at one end of the main shaft 31 far away from the air inlet 11; the driving wheel 62 is located outside the casing 10 and is driven by the driven wheel 61 through a driving belt 63, in this embodiment, two driving belts 63 are provided; the driving part 64 is a motor, and the structure thereof is the prior art and is not described again; the driving member 64 is mounted on the housing 10, and the output shaft is connected to the driving wheel 62 to drive the driving wheel 62 to rotate, so as to drive the main shaft 31 to rotate.
In some embodiments, an inner cover 65 is disposed inside the housing 10 along the length direction of the transmission belt 63, two ends of the inner cover 65 are respectively fixed on the inner wall of the housing 10, and the driven wheel 61 and at least a part of the transmission belt 63 are located inside the inner cover 65; the top of the machine shell 10 is also provided with an outer cover 66 corresponding to the part of the transmission belt 63 extending out of the machine shell 10, and the driving wheel 62 is also positioned in the inner space of the outer cover 66; the outer cover 66 and the inner cover 65 cooperate to protect the driving belt 63, the driving pulley 62, and the driven pulley 61.
In some embodiments, the inner cover 65 is provided with a bearing seat 67, and the main shaft 31 is rotatably supported on the bearing seat 67, so that the stability of the operation of the main shaft 31 is improved; the bearing housing 67 is provided with a second bearing (not shown) to which the main shaft 31 is fitted.
In some embodiments, the driving member is mounted on the casing 10 through a connecting assembly, which includes a first limiting plate 71, a second limiting plate 72, a fixed seat 73 and an adjustable seat 74; two first limiting plates 71 are arranged, the two first limiting plates 71 are arranged in parallel, and the first limiting plates 71 adopt an angle steel structure; two second limit plates 72 are arranged, the two second limit plates 72 are arranged in parallel, the two second limit plates 72 are fixed between the two first limit plates 71, and the second limit plates 72 also adopt an angle steel structure; the fixed seat 73 is fixed between the two second limiting plates 72; the adjustable seat 74 is arranged parallel to the fixed seat 73, and has a distance with the fixed seat 73, and the driving member 64 is mounted on the adjustable seat 74; the adjustable seat 74 is connected with the fixed seat 73 through a plurality of bolts 75, and the distance between the adjustable seat 74 and the fixed seat 73 is adjusted through the bolts 75, so as to adjust the position of the driving member 64.
Of course, in other embodiments, the driving member can be directly fixed to the housing 10.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (10)
1. The utility model provides a fan of steady operation which characterized in that: comprises that
The air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with a cavity for air flow to pass through, and the side wall of the shell is provided with an air inlet and an air outlet;
the impeller is rotatably arranged in the shell and used for increasing the gas pressure and discharging gas;
the main shaft is rotatably supported on the shell, penetrates through the impeller and is connected with the impeller in a rotation stopping manner;
the power component is connected with the main shaft to drive the main shaft to rotate;
and the supporting structure is arranged on the side wall of one side of the shell provided with the air inlet, and one end of the main shaft corresponding to the air inlet is supported on the supporting structure through a first bearing.
2. The stably operating fan according to claim 1, characterized in that: the supporting structure comprises a plurality of single bodies, each single body comprises an arc section, an external connection section connected with one end of the arc section and an internal connection section connected with the other end of the arc section; the external connection section extends to the direction far away from the circle center of the arc section and is fixed with the shell; the inner connecting section extends towards the direction far away from the circle center of the arc section, and the inner connecting section is attached and fixed with the outer connecting section on the adjacent monomer.
3. The stably operating fan according to claim 2, wherein: the arc sections surround to form a complete ring shape, and the first bearing is fixed at the centers of the arc sections; and/or two sides of the arc section are respectively provided with a blocking part, and at least part of the outer ring of the first bearing is clamped between the two blocking parts.
4. The stably operating fan according to claim 2, wherein: the included angle alpha between the external connecting section and the internal connecting section is 360 DEG/n, wherein n is the number of monomers.
5. The stably operating fan according to claim 2, wherein: the external connection section is of a sheet structure, and a plane formed by the external connection section passes through the central line of the main shaft or is parallel to the axis of the main shaft; and one end of the external connection section, which is far away from the arc section, is twisted and then fixed with the machine shell.
6. The stably operating fan according to claim 1, characterized in that: a current collector is arranged on the side wall of the shell, which is provided with the air inlet, and at least part of the current collector extends into the shell; the maximum vertical distance between the current collector and the side wall of the shell on the side provided with the air inlet is set to be L1, and the minimum vertical distance between the impeller and the side wall of the shell on the side provided with the air inlet is set to be L2, wherein L1> L2.
7. The stably operating fan according to claim 1, characterized in that: the impeller comprises an impeller rear disc, an impeller front disc and blades arranged between the impeller front disc and the impeller rear disc; the impeller rear disc is connected with the main shaft through a shaft sleeve, and a flange surface connected with the impeller rear disc is arranged on the shaft sleeve; and/or the shaft sleeve is provided with a mounting position, the impeller rear disc is annular, and at least part of one side of the impeller rear disc close to the center is clamped into the mounting position.
8. The stably operating fan according to claim 1, characterized in that: the power part comprises a driven wheel arranged at one end of the main shaft far away from the air inlet, a driving wheel arranged outside the shell, a transmission belt connecting the driving wheel and the driven wheel, and a driving piece arranged on the shell and an output shaft connected with the driving wheel; an inner cover for covering the driven wheel and part of the transmission belt is arranged in the shell; an inner cover for covering the driving wheel and the other part of the transmission belt is arranged outside the shell.
9. The stably operating fan of claim 8, further comprising: the inner cover is provided with a bearing seat, and the main shaft is rotatably supported on the bearing seat.
10. The stably operating fan according to claim 1, characterized in that: the section of the whole machine shell along the direction vertical to the axis of the main shaft is square or circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122312038.0U CN216429989U (en) | 2021-09-23 | 2021-09-23 | Fan of steady operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122312038.0U CN216429989U (en) | 2021-09-23 | 2021-09-23 | Fan of steady operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216429989U true CN216429989U (en) | 2022-05-03 |
Family
ID=81323212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122312038.0U Active CN216429989U (en) | 2021-09-23 | 2021-09-23 | Fan of steady operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216429989U (en) |
-
2021
- 2021-09-23 CN CN202122312038.0U patent/CN216429989U/en active Active
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