Fan with adjustable angle

Abstract

The utility model discloses a fan with an adjustable angle. The fan comprises a base; the fan body is provided with an air outlet, an impeller of the fan body is connected with a rotation driving device, outer protruding annular edges are arranged on the peripheries of volutes at the two axial ends of the fan body, a gear ring is arranged on the inner circumferential face or the outer circumferential face of at least one outer protruding annular edge, and the gear ring is provided with a receding smooth section at the air outlet. The convex annular edge is rotationally arranged on the base; and the gear rotating device is arranged on the base, is matched with the gear ring and is used for driving the gear ring to rotate so as to drive the fan main body to rotate. The device has the advantages of being easy to operate, high in convenience and wide in application range, the outlet angle of the device can be adjusted to a proper angle within the range according to actual site conditions, and the device has a large angle adjusting range.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a fan with adjustable angle. Background Art

[0002] A centrifugal fan is a general-purpose mechanical device used for supplying or extracting air. It can be widely used in various industries that require air supply or extraction. Existing fans usually have a fixed rotation angle and cannot be adjusted according to actual application requirements, which limits their applicability in different occasions. On-site equipment conditions are complex and there are many working conditions, so production must be stopped for inspection and maintenance during equipment maintenance. If valves are used to open and close other branch pipes, and the outlet angle of the fan is fixed, the resistance in the pipeline will inevitably cause a loss of air volume and have a certain impact on efficiency. If multiple devices are used to connect to multiple pipelines, and other fans are shut down during normal operation, it will result in great waste and maintenance costs.

[0003] Currently, Chinese patent application publication number CN107956724A discloses an angle-adjustable blower, comprising a protective structure, a first base, a protective housing, a fixing sleeve, a guide tube, a drive structure, a junction box, a connecting sleeve, a motor, a second base, an impeller, a connecting shaft, and a sealing ring. A connecting sleeve is sleeved onto the outside of the connecting shaft at one end of the motor, which is rotatably connected to the protective housing. The bottom surfaces of the first base and the second base are on the same plane, making it easy to secure the motor and second base to a stable working support with a large contact area. To adjust the guide tube, one only needs to rotate the protective housing and change the position of the guide tube, thereby changing the wind direction of the blower. However, this patent does not allow for large-scale changes in the air outlet angle. Utility Model Content

[0004] The purpose of the present utility model is to provide an angle-adjustable fan in response to the above-mentioned deficiencies and defects of the prior art. The angle-adjustable fan has the characteristics of easy operation, high convenience and wide practical range. Its outlet angle can be adjusted to a suitable angle within the range according to actual site conditions, and has a larger angle adjustment range to solve the above-mentioned problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] An angle-adjustable fan, comprising:

[0007] base;

[0008] A fan body, the fan body having an air outlet, the impeller of the fan body being connected to a rotation drive device, the outer periphery of the volute at both axial ends of the fan body being provided with an outer convex annular edge, the inner circumference or outer circumference of at least one of the outer convex annular edges being provided with a gear ring, the gear ring having a smooth yielding section at the air outlet, and the outer convex annular edge being rotatably provided on the base;

[0009] A gear rotating device is arranged on the base and cooperates with the gear ring to drive the gear ring to rotate, thereby driving the fan body to rotate.

[0010] In a preferred embodiment of the present invention, the gear rotating device includes a worm that cooperates with the ring gear and is rotatably disposed on the base, and a worm driving device that drives the worm to rotate.

[0011] In a preferred embodiment of the present invention, the worm drive device includes a rotating motor or a rotating hand wheel.

[0012] In a preferred embodiment of the present invention, the outer convex annular edge is provided with a support bearing, the outer ring of the support bearing is connected to the base, and the inner ring of the support bearing is connected to the outer convex annular edge.

[0013] In a preferred embodiment of the present invention, gear rings are provided on the inner circumferential surfaces of the outer convex annular edges at both axial ends of the fan body.

[0014] In a preferred embodiment of the present invention, the outer convex annular edges at two axial ends of the fan body are connected by a plurality of support columns arranged at circumferential intervals.

[0015] In a preferred embodiment of the present invention, the rotation drive device includes a drive motor assembly arranged on the base, and the outer periphery of the output end of the drive motor assembly is connected to the shaft hole of the fan body through a bearing assembly.

[0016] In a preferred embodiment of the present invention, the bearing assembly includes a bearing arranged on the outer periphery of the output end of the drive motor assembly, the bearing is arranged in a mounting groove at the shaft hole of the fan body, and a bearing pressure plate for pressing the outer ring of the bearing is provided on the mounting groove.

[0017] In a preferred embodiment of the present invention, the drive motor assembly includes a drive motor and a transmission assembly connected to the drive motor through a coupling, and a rotating output shaft connected to the output end of the transmission assembly, and the rotating output shaft is connected to the impeller of the fan body.

[0018] In a preferred embodiment of the present invention, the outer convex annular edge is integrally provided with the volute.

[0019] Due to the adoption of the above technical solution, compared with the existing technology, the utility model has the characteristics of easy operation, high convenience and wide practical range. Its outlet angle can be adjusted to a suitable angle within the range according to the actual site conditions, and has a larger angle adjustment range. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural front view of an embodiment of the utility model.

[0022] Figure 2 This is a rear view of the structure of an embodiment of the present utility model.

[0023] Figure 3 This is a left side view of the structure of an embodiment of the utility model.

[0024] Figure 4 This is a right side view of the structure of an embodiment of the present utility model.

[0025] Figure 5 This is a top view of the structure of an embodiment of the present utility model.

[0026] Figure 6 This is a bottom view of the structure of an embodiment of the present utility model.

[0027] Figure 7 This is one of the structural stereograms of an embodiment of the utility model.

[0028] Figure 8 This is the second structural stereogram of an embodiment of the present utility model.

[0029] Figure 9 This is the third structural stereogram of an embodiment of the present utility model.

[0030] Figure 10 This is a radial cross-sectional view of an embodiment of the present utility model.

[0031] Figure 11 This is a partially enlarged view of an embodiment of the utility model.

[0032] Figure 12 This is a structural schematic diagram of an embodiment of the present invention when the air outlet angle is 0°.

[0033] Figure 13 This is a structural diagram of an embodiment of the present invention when the air outlet angle is 60°.

[0034] Figure 14 This is a structural diagram of an embodiment of the present invention when the air outlet angle is 240°.

[0035] Figure markings: inlet pipe 1; outlet pipe 2; including base 100; support base 110; fan body 200; shaft hole 201; mounting groove 202; air outlet 210; volute 220; outer convex annular edge 230; gear ring 240; smooth section 241; support bearing 250; outer ring 251; inner ring 252; support column 260; collector 270; rotation drive device 300; drive motor assembly 310; drive motor 311; coupling 312; transmission assembly 313; rotation output shaft 314; bearing assembly 320; bearing 321; bearing outer ring 321a; bearing pressure plate 322; screw 323; gear rotation device 400; worm 410; worm drive device 420. DETAILED DESCRIPTION

[0036] The following describes preferred embodiments of the present invention in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0037] The terms used in this utility model are for the purpose of describing specific embodiments only and are not intended to limit the utility model. As used in this utility model and the appended claims, the singular forms "a," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0038] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0039] See also Figures 1 to 14 The angle-adjustable fan shown includes a base 100 , a fan body 200 , a rotation drive device 300 , and a gear rotation device 400 .

[0040] The fan body 200 has an air outlet 210, and the impeller of the fan body 200 is connected to the rotation drive device 300. In this embodiment, a current collector 270 is provided at one end of the fan body 200 away from the rotation drive device 300. The rotation drive device 300 includes a drive motor assembly 310 disposed on the base 100. The outer periphery of the output end of the drive motor assembly 310 is connected to the shaft hole 201 of the fan body 200 via a bearing assembly 320. Specifically, the bearing assembly 320 includes a bearing 321 disposed on the outer periphery of the output end of the drive motor assembly 310. The bearing 321 is disposed in a mounting groove 202 of the shaft hole 201 of the fan body 200. The mounting groove 202 is provided with a bearing pressure plate 322 that presses the bearing outer ring 321a. The bearing pressure plate 322 is locked by a screw 323. The drive motor assembly 310 includes a drive motor 311, a transmission assembly 313 connected to the drive motor 311 via a coupling 312, and a rotating output shaft 314 connected to the output end of the transmission assembly 313. The rotating output shaft 314 is connected to the impeller of the fan body 200. The transmission assembly 313 is preferably a bearing housing. Therefore, when the fan body 200 rotates as a whole, the output end of the drive motor assembly 310 does not rotate with it.

[0041] The outer periphery of the volute 220 at both axial ends of the fan body 200 is provided with an outer convex annular edge 230. The inner or outer circumferential surface of at least one of the outer convex annular edges 230 is provided with a ring gear 240. The ring gear 240 has a smooth, yielding section 241 at the air outlet 210. The outer convex annular edge 230 is rotatably mounted on the base 100. A gear rotating device 400 is disposed on the base 100 and cooperates with the ring gear 240 to drive the ring gear 240 to rotate, thereby driving the fan body 200 to rotate. In this embodiment, the ring gear 240 includes a crown gear, and the gear rotating device 400 includes a worm 410 that cooperates with the ring gear 240 and is rotatably mounted on the base 100, and a worm drive device 420 that drives the worm 410 to rotate. Specifically, the worm 410 is rotatably mounted on the support base 110 on the base 100. The worm drive device 420 includes a rotary motor or a rotary hand wheel. In this embodiment, in order to realize electric automatic control, the worm drive device 420 is a rotary motor.

[0042] The outer convex annular edge 230 is provided with a support bearing 250. The outer ring 251 of the support bearing 250 is connected to the support seat 110 of the base 100, and the inner ring 252 of the support bearing 250 is connected to the outer convex annular edge 230, so that the volute can rotate. To ensure smoother rotation of the fan body 200 of the present invention, the inner circumferential surface of the outer convex annular edge 230 at both axial ends of the fan body 200 of this embodiment is provided with a gear ring 240. The outer convex annular edge 230 and the volute 220 are integrally formed. The outer convex annular edge 230 at both axial ends of the fan body 200 is connected by a number of circumferentially spaced support columns 260 to improve structural stability.

[0043] When the utility model is working normally, the collector 270 is connected to the inlet pipe 1, and the air outlet 210 is connected to the air outlet pipe 2. When the air outlet angle needs to be adjusted, after the fan is turned off, the bolts connecting the air outlet 210 and the air outlet pipe 2 are unscrewed, and the bolts connecting the collector 270 and the inlet pipe 1 are removed at the same time. After setting a desired outlet angle, the worm drive device 420 is started, and the rotation of the worm 410 drives the ring gear 240 to rotate, and then drives the fan body 200 to rotate. After the fan body 200 is rotated to the appropriate angle (for example, Figure 12 The state when the air outlet angle is 0°, Figure 13 This is the state when the air outlet angle is 60°. Figure 14 (This is the state when the air outlet angle is 240°), reconnect the collector 270 to the inlet pipe 1, reconnect the air outlet 210 to the outlet pipe 2, and start the fan. This utility model is easy to operate, highly convenient, and has a wide range of practical applications. Its outlet angle can be adjusted to a suitable angle within a range according to actual site conditions, with a wide angle adjustment range. The fan of this utility model can be a grate cooling fan.

[0044] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0045] In the description of this application, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fan with adjustable angle, characterized in that: include: base; A fan body, the fan body having an air outlet, the impeller of the fan body being connected to a rotation drive device, the outer periphery of the volute at both axial ends of the fan body being provided with an outer convex annular edge, the inner circumference or outer circumference of at least one of the outer convex annular edges being provided with a gear ring, the gear ring having a smooth yielding section at the air outlet, and the outer convex annular edge being rotatably provided on the base; A gear rotating device is arranged on the base and cooperates with the gear ring to drive the gear ring to rotate, thereby driving the fan body to rotate.

2. The angle-adjustable fan according to claim 1, characterized in that: The gear rotating device includes a worm that cooperates with the gear ring and is rotatably arranged on the base, and a worm driving device that drives the worm to rotate.

3. The angle-adjustable fan according to claim 2, characterized in that: The worm drive device includes a rotating motor or a rotating hand wheel.

4. The angle-adjustable fan according to claim 1, characterized in that: The outer convex annular edge is provided with a support bearing, the outer ring of the support bearing is connected to the base, and the inner ring of the support bearing is connected to the outer convex annular edge.

5. The angle-adjustable fan according to claim 1, characterized in that: The inner circumferences of the outer convex annular edges at both axial ends of the fan body are provided with gear rings.

6. The angle-adjustable fan according to claim 5, characterized in that: The outer convex annular edges at the two axial ends of the fan body are connected by a plurality of support columns arranged at intervals in the circumferential direction.

7. The angle-adjustable fan according to claim 1, characterized in that: The rotation driving device includes a driving motor assembly arranged on the base, and the outer periphery of the output end of the driving motor assembly is connected to the shaft hole of the fan body through a bearing assembly.

8. The angle-adjustable fan according to claim 7, characterized in that: The bearing assembly includes a bearing arranged on the outer periphery of the output end of the drive motor assembly. The bearing is arranged in a mounting groove at the shaft hole of the fan body. A bearing pressure plate for pressing the outer ring of the bearing is provided on the mounting groove.

9. The angle-adjustable fan according to claim 7, characterized in that: The drive motor assembly includes a drive motor, a transmission assembly connected to the drive motor via a coupling, and a rotation output shaft connected to the output end of the transmission assembly, and the rotation output shaft is connected to the impeller of the fan body.

10. The angle-adjustable fan according to claim 1, characterized in that: The outer convex annular edge is integrally arranged with the volute.

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