Radiating fan with gradually-expanded flow channel

Abstract

The utility model discloses a divergent flow channel cooling fan which comprises an upper shell and a lower shell which are provided with through grooves, the upper shell and the lower shell are connected through an installation mechanism, the interior of the through groove of the lower shell is connected with a bearing through a fixing plate, the interior of the bearing is rotationally connected with a rotor, and the rotor is connected with a motor. Detachable blades are installed on the outer wall of the rotor at equal intervals, a first arc-shaped baffle is installed on the rear end face of the bottom of the inner side of the lower shell, and a second arc-shaped baffle capable of adjusting the direction is installed at one end of the bottom of the inner side of the lower shell. The clamping plates can be tightly attached to the outer walls of the blades through the springs, the blades are installed in the grooves, the clamping plates can clamp and fix the blades of different sizes through the elastic force of the springs, and the blades can be fixed in the axial direction of the rotor. Dust on the surfaces of the blades needs to be cleaned or blades of different sizes need to be replaced only by axially taking down the blades, the shell does not need to be separated, the device is simple and practical, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling fan technology, specifically a gradually expanding flow channel cooling fan. Background Technology

[0002] Cooling fans are used in many electronic products. The airflow generated by the fan removes the heat generated by the electronic components, thereby ensuring the normal operation of the electronic products. The casing of the cooling fan is usually designed with a rounded structure to fit the blades as closely as possible to reduce the size and facilitate installation.

[0003] In existing technologies, the gap between the inner wall of the arc-shaped outer shell of the cooling fan and the blades is small. As a result, most of the airflow generated when the blades rotate is blocked by the inner wall of the arc-shaped structure, thus offsetting part of the airflow and reducing the cooling effect.

[0004] Therefore, it is necessary to provide a gradually expanding flow channel cooling fan to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a gradually expanding flow channel cooling fan to solve the problems existing in the background technology. The technical solution of this utility model addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gradually expanding flow channel cooling fan, comprising an upper housing and a lower housing with a through slot, the upper housing and the lower housing being connected by an installation mechanism, a bearing being connected inside the through slot of the lower housing via a fixing plate, a rotor being rotatably connected inside the bearing, detachable blades being equidistantly installed on the outer wall of the rotor, a first arc-shaped baffle being installed on the rear end face of the inner bottom of the lower housing, and a second arc-shaped baffle with adjustable direction being installed at one end of the inner bottom of the lower housing.

[0007] Preferably, the mounting mechanism includes a first mounting seat mounted on the outer wall of the upper housing, and a second mounting seat corresponding to the first mounting seat mounted on the outer wall of the lower housing. The first mounting seat and the second mounting seat are connected by a threaded rod.

[0008] Preferably, the rotor has grooves equidistantly spaced on the top outer side, and the two ends of the grooves are connected by a connecting groove. A spring is installed inside the connecting groove, and the other end of the spring is connected to a clamping plate that fits the blade.

[0009] Preferably, the inner diameter of the first arc-shaped baffle is tangential to the edge of the through groove.

[0010] Preferably, the lengths of the outer wall of the second arc-shaped baffle and the inner wall of the lower housing gradually decrease along the outlet direction.

[0011] Preferably, a circular groove is provided on the inner bottom of the lower housing, a bearing seat is installed inside the circular groove, and a circular plate fixed to the bottom of the second arc-shaped baffle is rotatably connected to the inner wall of the bearing seat.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model uses a spring to allow the clamping plate to fit tightly against the outer wall of the blade, so that the blade can be installed inside the groove. The spring force allows the clamping plate to clamp and fix blades of different sizes. Furthermore, in the rotor axial direction, if it is necessary to clean the dust on the blade surface or replace the blade of different sizes, the blade can be removed axially without separating the shell. It is simple, practical and speeds up work efficiency.

[0014] The length of the outer wall of the second arc-shaped baffle and the inner wall of the lower shell gradually decreases along the outlet direction, so that the airflow channel generated by the blades gradually increases from the inside to the outside. This makes the airflow have a wider heat dissipation range and better effect when it exits the outlet. The angle of the second arc-shaped baffle can be changed by the circular plate and bearing seat, so that the second arc-shaped baffle can adapt to blades of different sizes, which greatly reduces the obstruction to the airflow and reduces the problem of airflow loss and poor heat dissipation effect. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a front view of the present invention;

[0017] Figure 3 This utility model Figure 2 Enlarged internal structure diagram at point A;

[0018] Figure 4 This is a perspective view of the lower housing of this utility model;

[0019] Figure 5 This utility model Figure 4 A diagram showing the separation of the middle section from the second arc-shaped baffle.

[0020] In the figure: 1. Upper housing; 2. Lower housing; 3. Mounting mechanism; 301. First mounting seat; 302. Second mounting seat; 303. Threaded rod; 4. Rotor; 401. Groove; 402. Connecting groove; 403. Spring; 404. Clamping plate; 5. Blade; 6. First arc-shaped baffle; 7. Second arc-shaped baffle; 8. Circular groove; 9. Bearing seat; 10. Circular plate. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] Please see Figure 1-5 A gradually expanding flow channel cooling fan includes an upper housing 1 and a lower housing 2 with a through slot. The upper housing 1 and the lower housing 2 are connected by an installation mechanism 3. A bearing is connected to the inside of the through slot of the lower housing 2 through a fixing plate. A rotor 4 is rotatably connected inside the bearing. Removable blades 5 are installed at equal intervals on the outer wall of the rotor 4. A first arc-shaped baffle 6 is installed on the rear end face of the bottom inner side of the lower housing 2. A second arc-shaped baffle 7 with adjustable direction is installed at one end of the bottom inner side of the lower housing 2.

[0024] like Figure 1-5 As shown, the mounting mechanism 3 includes a first mounting seat 301 mounted on the outer wall of the upper housing 1, and a second mounting seat 302 corresponding to the first mounting seat 301 mounted on the outer wall of the lower housing 2. The first mounting seat 301 and the second mounting seat 302 are connected by a threaded rod 303. The first mounting seat 301 and the second mounting seat 302 make the upper housing 1 and the lower housing 2 a spliced ​​structure, which can be used to separate and inspect and maintain the internal structure.

[0025] like Figure 1-5 As shown, the rotor 4 has grooves 401 evenly spaced on the top outer side. The two ends of the grooves 401 are connected by a connecting groove 402. A spring 403 is installed inside the connecting groove 402. The other end of the spring 403 is connected to a clamping plate 404 that fits the blade 5. The spring 403 allows the clamping plate 404 to fit tightly against the outer wall of the blade 5, so that the blade 5 is installed inside the groove 401. The elasticity of the spring 403 allows the clamping plate 404 to clamp and fix blades 5 of different sizes. In the axial direction of the rotor 4, if it is necessary to clean the dust on the surface of the blade 5 or replace the blade 5 of different sizes, it is only necessary to remove the blade 5 axially without separating the shell. It is simple and practical and speeds up the work efficiency. The rotor 4 adopts a T-shaped round rod structure.

[0026] like Figure 1-5 As shown, the inner diameter of the first arc-shaped baffle 6 is tangential to the edge of the through groove, so that the wind generated by the rotation of the blade 5 is blown out along the first arc-shaped baffle 6.

[0027] As shown in the figure, the length of the outer wall of the second arc-shaped baffle 7 and the inner wall of the lower shell 2 gradually decreases along the outlet direction. This design causes the airflow generated by the blades 5 to gradually increase from the inside to the outside of the channel, resulting in a wider heat dissipation range and better effect when the airflow exits the outlet.

[0028] like Figure 1-5 As shown, a circular groove 8 is provided on the inner bottom of the lower housing 2. A bearing seat 9 is installed inside the circular groove 8. A circular plate 10 fixed to the bottom of the second arc-shaped baffle 7 is rotatably connected to the inner wall of the bearing seat 9. The angle of the second arc-shaped baffle 7 can be changed by the circular plate 10 and the bearing seat 9, so that the second arc-shaped baffle 7 can adapt to blades 5 of different sizes, which greatly reduces the obstruction to wind force and reduces the problem of wind force loss and poor heat dissipation.

[0029] Working principle: During use, the spring 403 allows the clamping plate 404 to fit tightly against the outer wall of the blade 5, so that the blade 5 is installed inside the groove 401. The elasticity of the spring 403 allows the clamping plate 404 to clamp and fix blades 5 of different sizes. In the axial direction of the rotor 4, if it is necessary to clean the dust on the surface of the blade 5 or replace the blade 5 of different sizes, the blade 5 can be removed axially without separating the shell. It is simple and practical and speeds up the work efficiency. The length of the outer wall of the second arc-shaped baffle 7 and the inner wall of the lower shell 2 gradually decreases along the outlet direction, so that the airflow generated by the blade 5 gradually increases from the inside to the outside, so that the airflow has a wider heat dissipation range and better effect when it exits the outlet. The angle of the second arc-shaped baffle 7 can be changed by the circular plate 10 and the bearing seat 9, so that the second arc-shaped baffle 7 can adapt to blades 5 of different sizes, greatly reducing the obstruction of airflow and reducing the problem of airflow loss and poor heat dissipation effect.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gradually expanding flow channel cooling fan, comprising an upper housing (1) and a lower housing (2) having through slots, characterized in that: The upper housing (1) and the lower housing (2) are connected by an installation mechanism (3). The lower housing (2) has a bearing connected to the through groove by a fixing plate. The bearing is rotatably connected to a rotor (4). The outer wall of the rotor (4) is equidistantly equipped with detachable blades (5). The lower housing (2) has a first arc-shaped baffle (6) installed on the inner bottom rear end face. The lower housing (2) has a second arc-shaped baffle (7) with adjustable direction installed at one end of the inner bottom.

2. The gradually expanding flow channel cooling fan according to claim 1, characterized in that: The mounting mechanism (3) includes a first mounting seat (301) mounted on the outer wall of the upper housing (1), and a second mounting seat (302) corresponding to the first mounting seat (301) mounted on the outer wall of the lower housing (2). The first mounting seat (301) and the second mounting seat (302) are connected by a threaded rod (303).

3. The gradually expanding flow channel cooling fan according to claim 1, characterized in that: The rotor (4) has grooves (401) evenly spaced on the top outer side. The two ends of the grooves (401) are connected by a connecting groove (402). A spring (403) is installed inside the connecting groove (402). The other end of the spring (403) is connected to a clamping plate (404) that fits the blade (5).

4. A gradually expanding flow channel cooling fan according to claim 1, characterized in that: The inner diameter of the first arc-shaped baffle (6) is tangential to the edge of the through groove.

5. A gradually expanding flow channel cooling fan according to claim 1, characterized in that: The lengths of the outer wall of the second arc-shaped baffle (7) and the inner wall of the lower shell (2) gradually decrease along the outlet direction.

6. A gradually expanding flow channel cooling fan according to claim 1, characterized in that: The bottom inner side of the lower housing (2) is provided with a circular groove (8), and a bearing seat (9) is installed inside the circular groove (8). The inner wall of the bearing seat (9) is rotatably connected to a circular plate (10) fixed at the bottom of the second arc-shaped baffle (7).

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