Single-transmission-belt multi-fan structure of centrifugal fan
Through the single-drive belt multi-fan structure and gear chain transmission system, the synchronous operation of a single-motor-driven multi-fan is achieved, solving the equipment cost problem during extraction at different angles in a large range, and improving the extraction efficiency.
Patent Information
- Application Number
- CN202422138053.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-02
AI Technical Summary
Existing centrifugal fans require the use of multiple fans when pumping at large ranges and different angles, which increases the cost of equipment purchase and maintenance.
The single-drive belt and multi-fan structure is adopted, and multiple centrifugal fans are driven by a single motor, and the gear and chain transmission system are used to achieve the synchronous operation of the multi-fan, and the different extraction methods are switched through the detachable connecting components.
The scope of use of fans has been expanded, the purchase and maintenance costs have been reduced, and the extraction efficiency has been improved.
Smart Images
Figure CN223075802U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifugal fans, and particularly to a structure of a centrifugal fan with a single drive belt and multiple fans. Background Technique
[0002] A centrifugal fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and induced draft in boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household electrical appliances; drying and selection of grains; air source of wind tunnels and inflation and propulsion of hovercrafts, etc.
[0003] At present, most of the fans on the market are driven by a single motor for a single fan, driven in a one-to-one form by the motor and the fan. This type of fan can only extract in a small range and is not easy to move in a large range, with poor applicability. When large-range extraction at different angles is required, it may be necessary for the user to use multiple such one-to-one fans distributed at different positions in this range for extraction, thus increasing the purchase cost when purchasing the equipment and the later maintenance cost. Content of the Utility Model
[0004] The utility model provides a structure of a centrifugal fan with a single drive belt and multiple fans, which solves the problem in the related technology that when large-range extraction at different angles is required, it may be necessary for the user to use multiple such one-to-one fans distributed at different positions in this range for extraction, thus increasing the purchase cost when purchasing the equipment and the later maintenance cost.
[0005] The technical solution of the utility model is as follows: A structure of a centrifugal fan with a single drive belt and multiple fans, comprising: a base, a fixed seat is fixedly connected to the top end of one side of the base, a fan assembly is arranged at the top end of the other side of the base for blowing air to the outside, a driving assembly is arranged at one end of the fan assembly for driving the fan assembly, a connecting assembly is arranged at the other end of the fan assembly for connecting the fan assembly, and a shunt assembly is arranged at the other end of the connecting assembly for shunting the conducted air.
[0006] The driving assembly includes a motor fixedly connected to the outer wall of one end of the fixed seat, the output end of the motor penetrates the outer wall of the fixed seat and is fixedly connected with a first rotating shaft, a large gear is fixedly connected to the outer wall of the first rotating shaft, and small gears are symmetrically meshed and connected to both ends of the large gear.
[0007] Preferably, the driving assembly further includes a second rotating shaft fixedly connected to the centers of the two small gears, and one ends of the two second rotating shafts are rotatably connected to the fixed seat.
[0008] Preferably, the driving assembly further includes a first sprocket disposed on the other side of the two pinions, and both of the first sprockets are fixedly connected to the outer wall of the second rotating shaft.
[0009] Preferably, the driving assembly further includes a chain meshingly connected to the outer walls of the two first sprockets, and the other ends of both of the chains are meshingly connected with a second sprocket.
[0010] Preferably, the driving assembly further includes a third rotating shaft fixedly connected to the centers of the two second sprockets, and one ends of both of the third rotating shafts are rotatably connected to the fixed seat.
[0011] Preferably, the fan assembly includes four centrifugal fan bodies fixedly connected to the outer wall of the top end of the base, and air outlets are communicated with the tops of all the four centrifugal fan bodies.
[0012] Preferably, the fan assembly further includes air inlets communicated with the other ends of all the four centrifugal fan bodies. One side of the fan shafts of the two inner centrifugal fan bodies is fixedly connected to the other end of the second rotating shaft, and one side of the fan shafts of the two outer centrifugal fan bodies is fixedly connected to the other end of the third rotating shaft.
[0013] Preferably, the connecting assembly includes an external thread pipe fixedly connected to the outer walls of the other ends of the four air inlets, and internal thread pipes are threadedly connected to the outer walls of all the four external thread pipes.
[0014] Preferably, the connecting assembly further includes a rotating ring rotatably connected to the inside of the other ends of the four internal thread pipes, and introducing pipes are fixedly connected to the other ends of all the four rotating rings.
[0015] Preferably, the flow dividing assembly further includes a flow dividing pipe communicated with the other ends of the four introducing pipes. The other ends of the four flow dividing pipes are communicated with a collecting pipe, and the other end of the collecting pipe is communicated with an extraction hood.
[0016] The working principle and beneficial effects of the present utility model are as follows:
[0017] In the present utility model, when large - scale extraction at multiple positions is required, the external - threaded pipe at one end of the air inlet is connected to the corresponding pipeline. Then, each pipeline is successively placed at the positions where it needs to be placed. The output end of the motor drives the first rotating shaft to rotate. The first rotating shaft drives the large gear to rotate meshingly, thereby driving the two centrifugal fan bodies inside to perform extraction. Then, the first sprocket drives the chain to perform meshing transmission, and the chain drives the second sprocket to rotate meshingly, thereby driving the two centrifugal fan bodies outside to perform extraction. Thus, a single motor drives four centrifugal fan bodies simultaneously, so as to extract the wind force at different positions within this range. When independent extraction is required, it can be replaced with a collecting pipe for centralized extraction, which facilitates the user to change the extraction method according to needs, expands the usage range of the fan, reduces the purchase and later maintenance costs, and further improves the extraction efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.
[0019] Figure 1 It is a front - view structural schematic diagram proposed for the present utility model;
[0020] Figure 2 It is a front - view expanded structural schematic diagram proposed for the present utility model;
[0021] Figure 3 It is a sectional expanded structural schematic diagram of the fan assembly, drive assembly, and connection assembly proposed for the present utility model;
[0022] Figure 4 It is a structural schematic diagram of the fan assembly and drive assembly proposed for the present utility model;
[0023] Figure 5 It is a structural schematic diagram of the drive assembly proposed for the present utility model;
[0024] Figure 6 It is a sectional structural schematic diagram of the connection assembly proposed for the present utility model;
[0025] In the figure: 1, base; 2, fixed seat; 3, fan assembly; 301, air inlet; 302, centrifugal fan body; 303, air outlet; 4, drive assembly; 401, motor; 402, first rotating shaft; 403, large gear; 404, small gear; 405, second rotating shaft; 406, first sprocket; 407, chain; 408, second sprocket; 409, third rotating shaft; 5, connection assembly; 501, external - threaded pipe; 502, internal - threaded pipe; 503, rotating ring; 504, guiding pipe; 6, flow - dividing assembly; 601, flow - dividing pipe; 602, collecting pipe; 603, extraction hood. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The embodiments of the present utility model will be described clearly and completely in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.
[0027] The embodiments of the present application disclose a structure of a centrifugal fan with a single drive belt and multiple fans. Please refer to Figures 1-5, a structure of a centrifugal fan with a single drive belt and multiple fans, comprising: a base 1, a fixed seat 2 is fixedly connected to the top end of one side of the base 1, a fan assembly 3 is arranged at the top end of the other side of the base 1 for blowing air to the outside, a drive assembly 4 is arranged at one end of the fan assembly 3 for driving the fan assembly 3, a connection assembly 5 is arranged at the other end of the fan assembly 3 for connecting the fan assembly 3, and a flow splitting assembly 6 is arranged at the other end of the connection assembly 5 for splitting the conducted air. The drive assembly 4 includes a motor 401 fixedly connected to the outer wall of one end of the fixed seat 2, the output end of the motor 401 penetrates through the outer wall of the fixed seat 2 and is fixedly connected to a first rotating shaft 402, a large gear 403 is fixedly connected to the outer wall of the first rotating shaft 402, small gears 404 are symmetrically meshed and connected to both ends of the large gear 403, and the number of teeth of the large gear 403 is N times that of the small gear 404, which is convenient for driving the small gear 404 to rotate quickly, thereby reducing the rotation speed of the output end of the motor 401, and further reducing the power consumption of the motor 401. The drive assembly 4 further includes a second rotating shaft 405 fixedly connected to the centers of the two small gears 404, one ends of the two second rotating shafts 405 are rotatably connected to the fixed seat 2. The drive assembly 4 further includes a first sprocket 406 arranged on the other side of the two small gears 404, and the two first sprockets 406 are fixedly connected to the outer walls of the second rotating shafts 405. The drive assembly 4 further includes a chain 407 meshed with the outer walls of the two first sprockets 406, and the other ends of the two chains 407 are meshed and connected to a second sprocket 408. The drive assembly 4 further includes a third rotating shaft 409 fixedly connected to the centers of the two second sprockets 408, and one ends of the two third rotating shafts 409 are rotatably connected to the fixed seat 2. When the first rotating shaft 402 rotates, the large gear 403 is driven to rotate by the first rotating shaft 402, the two small gears 404 on both sides are driven to rotate in the same direction by the large gear 403, the second rotating shafts 405 are driven to rotate simultaneously by the two small gears 404 on both sides, the first sprockets 406 are driven to rotate by the two second rotating shafts 405, the chain 407 is driven to perform meshing transmission by the two first sprockets 406, the second sprockets 408 are driven to rotate in a meshing manner by the two chains 407, and the third rotating shaft 409 is driven to rotate by the two second sprockets 408, so that the rotation directions of the second rotating shaft 405 and the third rotating shaft 409 are the same, and the rotation directions of the fan shafts of the four centrifugal fan bodies 302 are the same.
[0028] Please refer to Figures 2-6, the fan assembly 3 includes four centrifugal fan bodies 302 fixedly connected to the outer wall of the top end of the base 1. Air outlets 303 are communicated with the tops of the four centrifugal fan bodies 302. The fan assembly 3 further includes air inlets 301 communicated with the other ends of the four centrifugal fan bodies 302. The outer wall of one side of the fan shafts of the two inner centrifugal fan bodies 302 is fixedly connected to the other end of the second rotating shaft 405. The outer wall of one side of the fan shafts of the two outer centrifugal fan bodies 302 is fixedly connected to the other end of the third rotating shaft 409. The connecting assembly 5 includes an external thread pipe 501 fixedly connected to the outer wall of the other end of the four air inlets 301. An external thread pipe 501 is fixedly connected to the other end of the air inlet 301 of the centrifugal fan body 302, which is convenient for communicating with other pipes. The outer walls of the four external thread pipes 501 are all threadedly connected with internal thread pipes 502. When centralized extraction is required, the mouth of the internal thread pipe 502 is aligned with the external thread pipe 501, and then by rotating the internal thread pipe 502, the external thread pipe 501 is threadedly fixed to the inner wall of the internal thread pipe 502. At this time, the mouth of the external thread pipe 501 just fits with the mouth of the rotating ring 503. The connecting assembly 5 further includes a rotating ring 503 rotatably connected to the inside of the other end of the four internal thread pipes 502. The internal thread pipe 502 is convenient for connecting the inlet pipe 504 with the external thread pipe 501, so as to facilitate the installation and disassembly of the inlet pipe 504. The other ends of the four rotating rings 503 are all fixedly connected with inlet pipes 504. The flow splitting assembly 6 further includes a flow splitting pipe 601 communicated with the other ends of the four inlet pipes 504. The other ends of the four flow splitting pipes 601 are communicated with a collecting pipe 602. The other end of the collecting pipe 602 is communicated with an extraction hood 603. When it is necessary to suck the external wind from a large range of multiple pipes, by rotating the internal thread pipe 502, the internal thread pipe 502 is threadedly separated from the external thread pipe 501, so that the external thread pipe 501 is separated from the inlet pipe 504. At this time, the extraction pipes are sequentially threadedly fixed to the external thread pipes 501, and then the respective extraction pipes are sequentially distributed at different positions in this large range to suck the wind.
[0029] Working principle and usage process: The extraction hood is placed at multiple corners in Room 603. The motor 401 is started, and the output end of the motor 401 drives the second rotating shaft 405 to rotate. The first rotating shaft 402 drives the large gear 403 to rotate. The large gear 403 drives the small gears 404 on both sides to engage and rotate. The two small gears 404 drive the small gears 404 to rotate at the same time. The two second rotating shafts 405 drive the fan shafts of the two centrifugal fan bodies 302 inside to rotate at the same time. At the same time, the two second rotating shafts 405 drive the first sprockets 406 to rotate. The two first sprockets 406 drive the chain 407 to engage and transmit. The two chains 407 drive the second sprockets 408 to engage and rotate. The two second sprockets 408 drive the third rotating shaft 409 to rotate. The two third rotating shafts 409 drive the fan shafts of the two centrifugal fan bodies 302 outside to rotate at the same time, so that the four centrifugal fan bodies 302 generate suction at the same time. The extracted wind enters the collecting pipe 602 under the action of the suction force through the extraction hood 603, enters the four shunt pipes 601 respectively through the collecting pipe 602, then enters the inlet pipe 504 through the four shunt pipes 601, then enters the internal thread pipe 502 through the inlet pipe 504, then enters the external thread pipe 501 through the internal thread pipe 502, then enters the centrifugal fan body 302 through the external thread pipe 501, and finally sends the wind out through the air outlet 303.
[0030] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. Structure of a centrifugal fan with a single drive belt and multiple fans, comprising: Base (1), characterized in that a fixing seat (2) is fixedly connected to the top end of one side of the base (1), a fan assembly (3) is arranged at the top end of the other side of the base (1) for blowing air outwards, a driving assembly (4) is arranged at one end of the fan assembly (3) for driving the fan assembly (3), a connecting assembly (5) is arranged at the other end of the fan assembly (3) for connecting the fan assembly (3), and a flow splitting assembly (6) is arranged at the other end of the connecting assembly (5) for splitting the conducted air; The driving assembly (4) includes a motor (401) fixedly connected to the outer wall of one end of the fixing seat (2), the output end of the motor (401) penetrates through the outer wall of the fixing seat (2) and is fixedly connected to a first rotating shaft (402), a large gear (403) is fixedly connected to the outer wall of the first rotating shaft (402), and small gears (404) are symmetrically meshed and connected to both ends of the large gear (403).
2. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 1, characterized in that, The driving assembly (4) further includes a second rotating shaft (405) fixedly connected to the centers of the two small gears (404), and one ends of the two second rotating shafts (405) are rotatably connected to the fixing seat (2).
3. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 2, characterized in that, The driving assembly (4) further includes a first sprocket (406) arranged on the other side of the two small gears (404), and the two first sprockets (406) are both fixedly connected to the outer wall of the second rotating shaft (405).
4. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 3, characterized in that, The driving assembly (4) further includes a chain (407) meshed with the outer walls of the two first sprockets (406), and the other ends of the two chains (407) are both meshed with a second sprocket (408).
5. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 4, characterized in that, The driving assembly (4) further includes a third rotating shaft (409) fixedly connected to the centers of the two second sprockets (408), and one ends of the two third rotating shafts (409) are both rotatably connected to the fixing seat (2).
6. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 1, characterized in that The fan assembly (3) includes four centrifugal fan bodies (302) fixedly connected to the outer wall of the top end of the base (1), and air outlets (303) are communicated with the tops of the four centrifugal fan bodies (302).
7. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 6, characterized in that, The fan assembly (3) further includes air inlets (301) communicated with the other ends of the four centrifugal fan bodies (302), and the outer walls of one sides of the fan shafts of the two inner centrifugal fan bodies (302) are fixedly connected to the other ends of the second rotating shaft (405), and the outer walls of one sides of the fan shafts of the two outer centrifugal fan bodies (302) are fixedly connected to the other ends of the third rotating shaft (409).
8. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 7, characterized in that, The connecting assembly (5) includes external threaded pipes (501) fixedly connected to the outer walls of the other ends of the four air inlets (301), and internal threaded pipes (502) are threadedly connected to the outer walls of the four external threaded pipes (501).
9. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 8, characterized in that, The connecting assembly (5) further includes a rotating ring (503) rotatably connected to the inside of the other ends of the four internal threaded pipes (502), and guide pipes (504) are fixedly connected to the other ends of the four rotating rings (503).
10. The structure of a centrifugal fan with a single drive belt and multiple fans according to claim 9, characterized in that, The shunt component (6) further includes a shunt pipe (601) connected to the other ends of the four inlet pipes (504). The other ends of the four shunt pipes (601) are connected to a collecting pipe (602), and the other end of the collecting pipe (602) is connected to an extraction hood (603).