Axial flow fan with bearing mounting structure

Abstract

The utility model relates to an axial flow fan with a bearing mounting structure. An impeller shaft is connected with a fixing rod through a bearing, so that the impeller shaft and an impeller are arranged in a ventilating duct, the impeller shaft drives the impeller to rotate, the air flowing speed is increased, and the bearing is fixedly connected to the bottom face of the fixing rod through a top base and a mounting buckle; the bearing and the fixing rod are connected more stably, the angle of the mounting buckle can be adjusted due to the existence of the torsional spring, the bearing can be replaced by adjusting the angle of the mounting buckle, connection of the bearing and the fixing rod is achieved through the mounting assembly, and on the premise that the stability of the bearing is improved, the bearing is convenient to replace.

Description

Technical Field

[0001] This application relates to the technical field of fan equipment, and particularly to an axial flow fan with a bearing installation structure. Background Art

[0002] Axial flow fans are widely used. They are a type of fan in which the air flow direction is the same as the axis of the fan blades. For example, electric fans and the fans of air conditioner outdoor units operate in an axial flow manner. The reason for being called "axial flow" is that the gas flows parallel to the fan axis. Axial flow fans are usually used in occasions where a higher flow rate and a lower pressure are required. Axial flow fans are fixed in position and move the air.

[0003] An axial flow fan generally fixes the impeller shaft through bearings. After long-term use, the bearings will be damaged due to wear. The existing bearings of axial flow fans are generally fixedly arranged inside the fan, resulting in difficulty in replacing the bearings. If the bearings are not replaced in time, it may affect the normal operation of the axial flow fan. Summary of the Utility Model

[0004] Based on this, in view of the problem that the existing bearings of axial flow fans are generally fixedly arranged inside the fan, resulting in difficulty in replacing the bearings, and if the bearings are not replaced in time, it may affect the normal operation of the axial flow fan, it is necessary to provide an axial flow fan with a bearing installation structure.

[0005] This application provides an axial flow fan with a bearing installation structure, including:

[0006] An installation base;

[0007] A fan assembly, the fan assembly includes a ventilation duct, a fixing rod, a bearing, an impeller shaft and an impeller. The ventilation duct is fixedly connected to the top surface of the installation base. The top surface of the fixing rod is fixedly connected to the inner wall of the ventilation duct. The bearing is arranged at one end of the fixing rod. The impeller shaft is fixedly connected to the bearing. The impeller is fixedly connected to one end of the impeller shaft;

[0008] An installation assembly, the installation assembly includes a fixing groove, an installation buckle, a torsion spring and a top base. The fixing groove is opened on the bottom surface of the fixing rod. The top base is fixedly connected to the outer wall of the bearing. The torsion spring is fixedly connected to the top surface of the top base. One end of the installation buckle is fixedly connected to the torsion spring. The installation buckle is rotationally connected to the top base through the torsion spring.

[0009] Further, the bearing includes an outer bearing and an inner bearing. A plurality of balls are arranged between the inner bearing and the outer bearing. The top base is fixedly connected to the outer wall of the outer bearing.

[0010] Further, the width of the fixing groove is greater than the width of the bearing.

[0011] Further, two torsion springs are provided, and each torsion spring is fixedly connected with an installation buckle.

[0012] Further, the installation component further includes a locking groove, the locking groove is arranged on the groove wall of the fixing groove, and the other end of the installation buckle is clamped in the locking groove.

[0013] Further, the installation buckle is U-shaped, and the width of the installation buckle is equal to the width of the locking groove.

[0014] Further, a through hole is also formed in the side wall of the fixing rod, and the impeller shaft passes through the through hole.

[0015] Further, the diameter of the impeller shaft is equal to the inner diameter of the inner bearing.

[0016] Further, two installation buckles are provided, and the two installation buckles are symmetrically arranged about the midline of the top surface of the top base.

[0017] Further, a plurality of impellers are provided, and the plurality of impellers are arranged at equal intervals at one end of the impeller shaft.

[0018] The present application relates to an axial flow fan with a bearing installation structure. The connection between the impeller shaft and the fixing rod is realized through the bearing, so that the impeller shaft and the impeller are arranged in the ventilation duct. The impeller shaft drives the impeller to rotate, thereby increasing the air flow speed. The bearing is fixedly connected to the bottom surface of the fixing rod through the top base and the installation buckle, so the connection between the bearing and the fixing rod is more stable. Moreover, due to the presence of the torsion spring, the angle of the installation buckle can be adjusted, so that the bearing can be replaced by adjusting the angle of the installation buckle. The present application realizes the connection between the bearing and the fixing rod through the installation component, and on the premise of improving the stability of the bearing, it is also convenient to replace the bearing. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of an axial flow fan with a bearing installation structure provided by an embodiment of the present application.

[0020] Figure 2 It is a schematic connection relationship diagram of the bearing and the installation component of an axial flow fan with a bearing installation structure provided by an embodiment of the present application.

[0021] Figure 3 It is a schematic structural diagram of the fixing rod of an axial flow fan with a bearing installation structure provided by an embodiment of the present application.

[0022] Figure 4 It is a schematic connection relationship diagram of the bearing and the top base of an axial flow fan with a bearing installation structure provided by an embodiment of the present application.

[0023] Figure 5Schematic diagram of the connection relationship between the impeller shaft and the fixing rod of an axial flow fan with a bearing installation structure provided by an embodiment of the present application.

[0024] Reference numerals:

[0025] 100, mounting base; 200, fan assembly; 201, ventilation duct; 202, fixing rod; 203, bearing;

[0026] 203a, outer bearing; 203b, inner bearing; 203c, ball; 204, impeller shaft; 205, impeller;

[0027] 206, through hole; 300, mounting assembly; 301, fixing groove; 302, mounting buckle; 303, torsion spring; 304, top base; 305, locking groove. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0029] The present application provides an axial flow fan with a bearing installation structure.

[0030] As Figure 1 and Figure 2 shown, in an embodiment of the present application, the bearing 203 installation structure of the axial flow fan includes a mounting base 100, a fan assembly 200 and a mounting assembly 300.

[0031] The fan assembly 200 includes a ventilation duct 201, a fixing rod 202, a bearing 203, an impeller shaft 204 and an impeller 205. The ventilation duct 201 is fixedly connected to the top surface of the mounting base 100. The top surface of the fixing rod 202 is fixedly connected to the inner wall of the ventilation duct 201. The bearing 203 is disposed at one end of the fixing rod 202. The impeller shaft 204 is fixedly connected to the bearing 203. One end of the impeller 205 is fixedly connected to the impeller shaft 204. The mounting assembly 300 includes a fixing groove 301, a mounting buckle 302, a torsion spring 303 and a top base 304. The fixing groove 301 is opened on the bottom surface of the fixing rod 202. The top base 304 is fixedly connected to the outer wall of the bearing 203. The torsion spring 303 is fixedly connected to the top surface of the top base 304. One end of the mounting buckle 302 is fixedly connected to the torsion spring 303. The mounting buckle 302 is rotationally connected to the top base 304 through the torsion spring 303.

[0032] In this embodiment, the connection between the impeller shaft 204 and the fixed rod 202 is realized through the bearing 203, so that the impeller shaft 204 and the impeller 205 are arranged in the ventilation duct 201. The impeller shaft 204 drives the impeller 205 to rotate, thereby increasing the air flow velocity. The bearing 203 is fixedly connected to the bottom surface of the fixed rod 202 through the top base 304 and the mounting buckle 302. Therefore, the connection between the bearing 203 and the fixed rod 202 is more stable. Moreover, due to the presence of the torsion spring 303, the angle of the mounting buckle 302 can be adjusted, so that the bearing 203 can be replaced by adjusting the angle of the mounting buckle 302. In this application, the connection between the bearing 203 and the fixed rod 202 is realized through the mounting assembly 300. On the premise of improving the stability of the bearing 203, it is also convenient to replace the bearing 203.

[0033] As Figure 4 shown, in an embodiment of the present application, the bearing 203 includes an outer bearing 203a and an inner bearing 203b. A plurality of balls 203c are arranged between the inner bearing 203b and the outer bearing 203a. The top base 304 is fixedly connected to the outer wall of the outer bearing 203a.

[0034] Specifically, the plurality of balls 203c are arranged at equal intervals.

[0035] In this embodiment, the impeller shaft 204 and the fixed rod 202 are connected through the bearing 203. The outer bearing 203a fixedly connects the bearing 203 body to the bottom surface of the fixed rod 202, and the inner bearing 203b fixedly connects the impeller shaft 204 to the inner ring of the bearing 203.

[0036] As Figure 3 shown, in an embodiment of the present application, the width of the fixing groove 301 is greater than the width of the bearing 203.

[0037] Specifically, sufficient space should be left in the fixing groove 301 for the torsion spring 303 to rotate.

[0038] In this embodiment, the bearing 203 is fixedly connected to the fixed rod 202 through the fixing groove 301. Since the bearing 203 needs to be replaced, the width of the fixing groove 301 is set to be greater than the width of the bearing 203, thereby reducing the friction between the bearing 203 and the fixing groove 301 and making the replacement of the bearing 203 more convenient.

[0039] As Figure 2 shown, in an embodiment of the present application, two torsion springs 303 are provided, and each torsion spring 303 is fixedly connected to a mounting buckle 302.

[0040] In this embodiment, the angle of the mounting buckle 302 is adjusted through the torsion spring 303, so that the mounting buckle 302 can be clamped in the locking groove 305, thereby helping to maintain the stability of the bearing 203.

[0041] When installing the bearing 203, rotate the torsion spring 303 to make the installation buckle 302 rotate upward, so that the bearing 203 can smoothly pass through the fixing groove 301. When the bearing 203 reaches the specified position, at this time the installation buckle 302 reaches a position parallel to the locking groove 305, thus losing the resistance from the wall of the fixing groove 301, and the installation buckle 302 will rotate downward, so that the installation buckle 302 is clamped in the locking groove 305.

[0042] As Figure 3 shown, in an embodiment of the present application, the installation component 300 further includes a locking groove 305, the locking groove 305 is arranged on the wall of the fixing groove 301, and the other end of the installation buckle 302 is clamped in the locking groove 305.

[0043] Optionally, a channel leading directly to the locking groove 305 can be arranged on the bottom surface of the fixing rod 202. When replacing the bearing 203, a straight rod can be used to pass through this channel and abut against the installation buckle 302, thereby rotating the installation buckle 302 to separate the installation buckle 302 from the locking groove 305.

[0044] In this embodiment, since there is a gap between the fixing groove 301 and the bearing 203, if the bearing 203 is only fixed in the fixing rod 202 by the through hole 206 and the impeller shaft 204, the bearing 203 may shake during the operation of the axial flow fan, thus affecting the normal operation of the axial flow fan. Therefore, the installation buckle 302 is fixed by setting a locking buckle, so as to ensure the stability of the bearing 203 and improve the stability of the connection of the bearing 203.

[0045] As Figure 2 shown, in an embodiment of the present application, the installation buckle 302 is U-shaped, and the width of the installation buckle 302 is equal to the width of the locking groove 305.

[0046] In this embodiment, by setting the width of the installation buckle 302 to be equal to the width of the locking groove 305, the connection between the installation buckle 302 and the locking groove 305 is made closer, thereby improving the stability of the bearing 203.

[0047] As Figure 3 shown, in an embodiment of the present application, a through hole 206 is further opened on the side wall of the fixing rod 202, and the impeller shaft 204 passes through the through hole 206 and is connected to the impeller 205.

[0048] Specifically, through holes 206 are opened on both opposite side walls of the fixing rod 202. When the bearing 203 is fixedly connected to the fixing groove 301, the inner bearing 203b corresponds to the through hole 206, and the centers of the inner bearing 203b and the through hole 206 are on the same horizontal line.

[0049] In this embodiment, the impeller shaft 204 passes through the through hole 206 - bearing 203 - through hole 206 in sequence, so that the impeller shaft 204 is fixed within the bearing 203.

[0050] As Figure 5 shown, in an embodiment of the present application, the diameter of the impeller shaft 204 is equal to the inner diameter of the inner bearing 203b.

[0051] Specifically, the other end of the impeller shaft 204 is connected to the driving machine, so that the impeller shaft 204 is driven to rotate by the driving machine.

[0052] In this embodiment, by setting the diameter of the impeller shaft 204 to be equal to the inner diameter of the inner bearing 203b, the connection between the impeller shaft 204 and the inner bearing 203b is made closer, avoiding the idling of the impeller shaft 204.

[0053] As Figure 2 shown, in an embodiment of the present application, two mounting buckles 302 are provided, and the two mounting buckles 302 are symmetrically arranged about the top surface midline of the top base 304.

[0054] Optionally, multiple groups of the mounting buckles 302 and the top base 304 can be provided, so as to improve the connection stability between the bearing 203 and the fixing rod 202.

[0055] In this embodiment, the bearing 203 is fixed from two directions by the two mounting buckles 302 respectively, so as to improve the connection stability between the bearing 203 and the fixing rod 202.

[0056] As Figure 1 shown, in an embodiment of the present application, multiple impellers 205 are provided, and the multiple impellers 205 are arranged at equal intervals at one end of the impeller shaft 204.

[0057] In this embodiment, the impellers 205 rotate together driven by the impeller shaft 204, and the multiple impellers 205 can increase the air flow velocity, thereby improving the working efficiency of the axial flow fan.

[0058] The technical features of the above - described embodiments can be combined arbitrarily, and there is no limitation on the execution order of the method steps. For the sake of concise description, not all possible combinations of the technical features in the above - described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0059] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. An axial flow fan with a bearing mounting structure, characterized in that: The axial flow fan with a bearing mounting structure comprises: Install the base; A fan assembly, the fan assembly comprising a ventilation duct, a fixing rod, a bearing, an impeller shaft and an impeller, the ventilation duct being fixedly connected to the top surface of the mounting base, the top surface of the fixing rod being fixedly connected to the inner wall of the ventilation duct, the bearing being arranged at one end of the fixing rod, the impeller shaft being fixedly connected to the bearing, and the impeller being fixedly connected to one end of the impeller shaft; The mounting assembly includes a fixing groove, a mounting buckle, a torsion spring and a top base, wherein the fixing groove is provided on the bottom surface of the fixing rod, the top base is fixedly connected to the outer wall of the bearing, the torsion spring is fixedly connected to the top surface of the top base, one end of the mounting buckle is fixedly connected to the torsion spring, and the mounting buckle is rotatably connected to the top base via the torsion spring.

2. The axial flow fan with a bearing mounting structure according to claim 1, characterized in that: The bearing comprises an outer bearing and an inner bearing, a plurality of balls are arranged between the inner bearing and the outer bearing, and the top base is fixedly connected to the outer wall of the outer bearing.

3. The axial flow fan with a bearing mounting structure according to claim 2, characterized in that: The width of the fixing groove is greater than the width of the bearing.

4. The axial flow fan with a bearing mounting structure according to claim 3, characterized in that: Two torsion springs are provided, and each torsion spring is fixedly connected with a mounting buckle.

5. The axial flow fan with a bearing mounting structure according to claim 4, characterized in that: The installation assembly also includes a locking groove, which is arranged on the groove wall of the fixing groove, and the other end of the installation buckle is clamped in the locking groove.

6. The axial flow fan with a bearing mounting structure according to claim 5, characterized in that: The mounting buckle is U-shaped, and the width of the mounting buckle is equal to the width of the locking groove.

7. The axial flow fan with a bearing mounting structure according to claim 6, characterized in that: The side wall of the fixing rod is also provided with a through hole, and the impeller shaft passes through the through hole and is connected with the impeller.

8. The axial flow fan with a bearing mounting structure according to claim 7, characterized in that: The diameter of the impeller shaft is equal to the inner diameter of the inner bearing.

9. The axial flow fan with a bearing mounting structure according to claim 8, characterized in that: There are two mounting buckles, and the two mounting buckles are symmetrically arranged about the center line of the top surface of the top base.

10. The axial flow fan with a bearing mounting structure according to claim 9, characterized in that: There are multiple impellers, and the multiple impellers are arranged at one end of the impeller shaft with equal intervals.

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