A centrifugal fan

Abstract

The utility model discloses a centrifugal fan belongs to fan technical field, this centrifugal fan, including fan body, first air duct, second air duct and the baffle component of setting in first air duct, the position switching centrifugal fan's air outlet position is controlled through the baffle component. Through the air outlet position of fan body and adds the reversing assembly, based on the position switching of baffle component in reversing assembly, can control the opening and closing of first air duct and second air duct in reversing assembly, and then realizes the adjustment of centrifugal fan air outlet direction, can realize the adjustment of air supply direction while keeping the installation position of centrifugal fan, the use scene of the fan of expansion.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a centrifugal fan. Background Technology

[0002] Centrifugal fans are machines that rely on input mechanical energy to increase gas pressure and discharge gas; they are a type of driven fluid machinery. 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 appliances; grain drying and conveying; wind tunnel air sources; and inflation and propulsion for hovercraft, etc.

[0003] Most existing centrifugal fans have a fixed air delivery direction. If you want to change the air delivery direction of the centrifugal fan during use, you need to adjust the installation position of the centrifugal fan. However, due to terrain limitations, it is inconvenient to install the fan in some locations, which affects the use of the fan. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal fan to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal fan, comprising: Fan body; The first air duct has a first end connected to the air outlet of the fan body and a second end extending in a third direction, and has a first sidewall in the first direction and a second sidewall in the second direction; The second air duct extends along the second direction, one end of the second air duct is connected to the second side wall, and the second side wall has a notch structure at the location of the second air duct; The baffle component is rotatably mounted on the first sidewall and configured to move between a first position coinciding with the cross section of the notch structure and a second position coinciding with the second end cross section of the first air duct; A locking structure is provided to hold the baffle member in a first or second position.

[0006] Furthermore, the first air duct and the air outlet of the fan body are connected by a flange structure.

[0007] Furthermore, the locking structure includes: The first hole group is disposed on the first sidewall and includes a plurality of first through holes spaced apart in the third direction; The second hole group is disposed on the first sidewall and includes a plurality of second through holes spaced apart in the second direction; Multiple threaded holes are provided on the baffle member and extend along a first direction.

[0008] Furthermore, both the first through hole and the second through hole are threaded holes.

[0009] Furthermore, the locking structure includes: A rotating shaft component, one end of which is connected to the baffle component, and the other end extending along a first direction and passing through the first sidewall, wherein the rotating shaft component is provided with a first groove and a second groove arranged at a 90° angle; and The limiting structure includes: The shell component is fixed to the first sidewall and extends along the second direction; An insert member is provided extending along a second direction, and both ends of the insert member protrude from the shell member.

[0010] Furthermore, the limiting structure also includes a slider component disposed within the housing component, and the slider component is connected to the insertion component.

[0011] Furthermore, the limiting structure also includes an elastic member sleeved on the insertion member, and the two ends of the elastic member are respectively connected to the inner wall of the housing member and the slider member.

[0012] Furthermore, the elastic member is a spring.

[0013] Furthermore, a second handle is fixed to the end of the insertion member away from the rotating shaft member.

[0014] Furthermore, the centrifugal fan also includes a first handle disposed on the baffle member.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This application adds a reversing component at the air outlet of the fan body. Based on the position switching of the baffle component in the reversing component, the opening and closing of the first and second air ducts in the reversing component can be controlled, thereby realizing the adjustment of the air outlet direction of the centrifugal fan. It can adjust the air supply direction while maintaining the installation position of the centrifugal fan, thus expanding the application scenarios of the fan. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one embodiment of a centrifugal fan; Figure 2 A cross-sectional view of the connection point between the first and second air ducts; Figure 3 A schematic diagram of one embodiment of the locking structure; Figure 4 This is a schematic diagram of another embodiment of a centrifugal fan; Figure 5 for Figure 4 Enlarged cross-sectional view at point A in the middle.

[0017] In the picture: 100. Fan body; 200, First air duct; 200a, First sidewall; 200b, Second sidewall; 201, Second air duct; 202, Notch structure; 300. Baffle component; 301. First handle; 400, First hole group; 401, First through hole; 402, Second hole group; 403, Second through hole; 404, Threaded hole; 500, pivot component; 501, first groove; 502, second groove; 503, insertion component; 504, housing component; 505, slider component; 506, elastic component; 507, second handle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] A centrifugal fan, as described above Figure 1 The centrifugal fan body consists of a fan body 100 and a reversing assembly assembled at the output port of the fan body 100. For ease of description, it will be referred to in the following description. Figure 1 The coordinate system is used to indicate the position, and the X, Y and Z axes are respectively denoted as the first direction, the second direction and the third direction.

[0020] In some embodiments, refer to Figure 1The aforementioned reversing assembly includes a first air duct 200 and a second air duct 201. The first air duct 200 extends along a third direction and is configured as the first air outlet duct of a centrifugal fan. Specifically, the first air duct 200 has a first end connected to the output port of the fan body 100 and a second end extending in a direction away from the fan body 100. For example, the first air duct 200 and the output port of the fan body 100 are connected by a flange structure. Further, the first air duct 200 has a first sidewall 200a in a first direction and a second sidewall 200b in a second direction. Correspondingly, the second air duct 201 extends along a second direction and is configured as the second air outlet duct of a centrifugal fan. Specifically, one end of the second air duct 201 is fixed to the second sidewall 200b of the first air duct 200 and is disposed adjacent to the second end of the first air duct 200. The second sidewall 200b of the first air duct 200 has a notch structure 202 formed at the air duct position to allow the first air duct 200 and the second air duct 201 to communicate.

[0021] Continue to refer to Figure 2 The aforementioned reversing assembly also includes a baffle member 300 and a locking structure. The baffle member 300 is rotatably mounted on the first sidewall 200a of the first air duct 200 and configured to switch between a first position and a second position. Correspondingly, the locking structure can lock the baffle member 300 after it has moved to the first or second position, even if the baffle member 300 remains in the first or second position. Specifically, when the baffle member 300 moves to the first position, the baffle member 300 and the notch structure 202 coincide, and the notch structure 202 can be locked. The opening position is closed to cut off the connection between the first air duct 200 and the second air duct 201. The high-pressure gas output by the fan body 100 is output to the outside through the first air duct 200. Correspondingly, when the baffle member 300 moves to the second position, the second end section of the baffle member 300 and the first air duct 200 coincide, and the second end face of the first air duct 200 can be closed. At this time, the first air duct 200 and the second air duct 201 are connected through the notch structure 202, and the high-pressure gas output by the fan body 100 is output to the outside through the first air duct 200 and the second air duct 201.

[0022] In some embodiments, refer to Figure 3The aforementioned locking structure includes a first hole group 400 and a second hole group 402 disposed on the first sidewall 200a. The first hole group 400 includes a plurality of first through holes 401 spaced apart in a third direction, and the second hole group 402 includes a plurality of second through holes 403 spaced apart in a second direction. Correspondingly, the aforementioned baffle member 300 is provided with a plurality of threaded holes 404 extending in the first direction. When the baffle member 300 is in the first position, the positions of the threaded holes 404 on the baffle member 300 correspond to the positions of the first through holes 401. At this time, by passing fasteners such as bolts through the first through holes 401 and screwing them into the threaded holes 404, the baffle member 300 can be kept in the first position. Correspondingly, when the baffle member 300 is in the second position, the threaded hole 404 and the second through hole 403 on the baffle member 300 are in the second position. At this time, the baffle member 300 can be held in the second position by passing a bolt or other fastener through the second through hole 403 and screwing it into the threaded hole 404. In some embodiments, the first through hole 401 and the second through hole 403 are both threaded holes 404, which are used to keep the fastener in the first through hole 401 and the second through hole 403 position when the fastener is in the idle state. In some examples, the baffle member 300 is provided with a first handle 301 to facilitate the control of the movement of the baffle member 300.

[0023] In some embodiments, refer to Figure 4 and Figure 5The aforementioned locking structure includes a pivot member 500 and a limiting structure. One end of the pivot member 500 is connected to the baffle member 300, and the other end extends along a first direction and passes through the first sidewall 200a. A first groove 501 and a second groove 502 are provided on the end of the pivot member 500 that passes through the first sidewall 200a, wherein the first groove 501 and the second groove 502 are arranged at a 90° angle in the circumferential direction. Correspondingly, the aforementioned limiting structure includes a housing member 504 and an insertion member 503, wherein both the housing member 504 and the insertion member 503 extend along a second direction, and both ends of the insertion member 503 pass through the housing member 504. In use, by controlling the movement of the insertion member 503, the insertion member 503 and the pivot member... The first groove 501 or the second groove 502 on 500 contact or separate to lock and unlock the baffle member 300. In some examples, the limiting structure also includes a slider member 505 disposed in the housing member 504 and connected to the insertion member 503. Correspondingly, the limiting structure also includes an elastic member 506 (e.g., a spring) sleeved on the insertion member 503, and the two ends of the elastic member 506 are respectively connected to the inner wall of the housing member 504 and the slider member 505. Based on the elastic member 506, the insertion member 503 can be held after being inserted into the first groove 501 or the second groove 502. In some examples, a second handle 507 is fixed to one end of the insertion member 503 away from the pivot member 500.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan, characterized in that, include: Fan body (100); The first air duct (200) has a first end connected to the air outlet of the fan body (100) and a second end extending in a third direction, and has a first sidewall (200a) in the first direction and a second sidewall (200b) in the second direction. The second air duct (201) extends along the second direction. One end of the second air duct (201) is connected to the second side wall (200b), and the second side wall (200b) has a notch structure (202) at the position of the second air duct (201). The baffle member (300) is rotatably mounted on the first sidewall (200a) and configured to move between a first position coinciding with the cross section of the notch structure (202) and a second position coinciding with the second end cross section of the first air duct (200); A locking structure is provided for holding the baffle member (300) in a first position or a second position.

2. A centrifugal fan according to claim 1, characterized in that: The first air duct (200) and the air outlet of the fan body (100) are connected by a flange structure.

3. A centrifugal fan according to claim 1, characterized in that, The locking structure includes: The first hole group (400) is disposed on the first sidewall (200a) and includes a plurality of first through holes (401) spaced apart in the third direction. The second hole group (402) is disposed on the first sidewall (200a) and includes a plurality of second through holes (403) spaced apart in the second direction. Multiple threaded holes (404) are provided on the baffle member (300) and extend along the first direction.

4. A centrifugal fan according to claim 3, characterized in that: Both the first through hole (401) and the second through hole (403) are threaded holes.

5. A centrifugal fan according to claim 1, characterized in that, The locking structure includes: A rotating shaft component (500), one end of which is connected to the baffle component (300), and the other end extends along a first direction and passes through the first sidewall (200a). The rotating shaft component (500) is provided with a first groove (501) and a second groove (502) arranged at a 90° angle. The limiting structure includes: The housing component (504) is fixed to the first sidewall (200a) and extends along the second direction; An insertion member (503) is provided extending in the second direction, and both ends of the insertion member (503) protrude from the housing member (504).

6. A centrifugal fan according to claim 5, characterized in that, The limiting structure further includes a slider member (505) disposed within the housing member (504), and the slider member (505) is connected to the insertion member (503).

7. A centrifugal fan according to claim 6, characterized in that: The limiting structure also includes an elastic member (506) sleeved on the insertion member (503), and the two ends of the elastic member (506) are respectively connected to the inner wall of the shell member (504) and the slider member (505).

8. A centrifugal fan according to claim 7, characterized in that: The elastic member (506) is a spring.

9. A centrifugal fan according to claim 5, characterized in that: The insertion member (503) is fixed with a second handle (507) at the end away from the rotating shaft member (500).

10. A centrifugal fan according to claim 1, characterized in that: The centrifugal fan also includes a first handle (301) disposed on the baffle member (300).

Images