Fan

Abstract

The utility model discloses a fan, which comprises a motor cover comprising a front cover and a rear cover, and two opposite ends of the front cover and the rear cover are provided with connecting pieces and are detachably buckled and connected through the two connecting pieces; the wind wheel comprises a base sleeve connected with the front cover in a clearance fit and sleeved mode, and a shaft sleeve is arranged on the base sleeve. The motor is arranged in the motor cover, and a motor shaft of the motor penetrates through the front cover, penetrates through the shaft sleeve and is locked on the base sleeve through a locking nut; the guide vane comprises a shaft ring which is in clearance fit with the rear cover in a sleeved mode, and the shaft ring is detachably connected with the connecting piece on the rear cover. During maintenance and replacement, parts can be disassembled and assembled, the whole machine does not need to be replaced, and therefore the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan manufacturing technical field, more specifically, relate to a fan. BACKGROUND

[0002] Fan includes wind wheel, motor and guide vane, motor drives wind wheel rotation, wind wheel inhales fluid, and then fluid flows out through guide vane, thereby realizing fluid delivery. At present, wind wheel and guide vane are tightly fitted on motor, when assembling, wind wheel is sleeved on the front of motor and is mutually extruded and tightly fitted, guide vane is sleeved on the rear of motor and is mutually extruded and tightly fitted. This assembly mode leads to difficult disassembly and assembly of fan, if any part (such as wind wheel, motor or guide vane) in fan is damaged, only complete machine replacement can be carried out, thereby leading to high maintenance cost.

[0003] From the above, how to solve the difficulty of replacing parts of the existing fan and the high maintenance cost is a problem that the technical personnel in the field are eager to solve at present. INVENTION CONTENTS

[0004] Therefore, the utility model aims at providing a fan, which can disassemble and assemble parts during maintenance and replacement, without the need of complete machine replacement, thereby reducing maintenance cost.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0006] A fan, comprising:

[0007] A motor cover comprising a front cover and a rear cover, both of which are provided with connecting pieces at opposite ends and are detachably connected through the two connecting pieces;

[0008] A wind wheel comprising a base sleeve that is gap-fitted with the front cover, and a shaft sleeve provided on the base sleeve;

[0009] A motor provided in the motor cover, a shaft of the motor penetrating through the front cover, the shaft sleeve, and locked on the base sleeve by a locking nut;

[0010] A guide vane comprising a shaft ring that is gap-fitted with the rear cover, and the shaft ring is detachably connected with the connecting piece on the rear cover.

[0011] Preferably, the part of the shaft penetrating out of the front cover is provided with a shaft step abutting against the front cover;

[0012] The base sleeve is a cap structure, and the shaft sleeve is inserted into the top cover of the base sleeve and extends backward to abut against the shaft step.

[0013] Preferably, the part of the shaft penetrating out of the shaft sleeve is provided with an external thread that is connected with the internal thread of the locking nut.

[0014] Preferably, the two connecting members are circumferentially provided with a plurality of guide vane mounting holes corresponding to each other, and a pair of corresponding guide vane mounting holes are used for inserting a guide vane mounting screw.

[0015] The inner side of the shaft ring is provided with an annular step circumferentially provided with a plurality of guide vane mounting nuts threadedly connected with the guide vane mounting screws.

[0016] Preferably, the rear cover is provided with a torque resisting groove corresponding to the position of the guide vane mounting hole, through which the guide vane mounting screw passes.

[0017] Preferably, the annular step extends along the axial direction of the shaft ring by a preset length, and the inner periphery of the annular step is threadedly connected with the outer periphery of the rear cover.

[0018] Preferably, the annular step is provided with a plurality of protruding ribs corresponding to the plurality of nuts, and the nuts are embedded in the protruding ribs.

[0019] Preferably, the guide vane further comprises a wind deflector and a plurality of stationary vanes arranged between the wind deflector and the base sleeve, and the wind deflector is axially provided with a plurality of customer mounting through holes for customer installation and fixation of the fan.

[0020] Preferably, one side surface of the shaft is a plane, and the maximum distance between the plane and the arc surface of the shaft in the radial direction is about 0.4-0.8 times the diameter of the shaft.

[0021] Preferably, the length of the external thread on the shaft is about 1.2-1.5 times the diameter of the shaft.

[0022] The fan provided by the utility model comprises a motor cover, a motor, a wind wheel and a guide vane. The motor cover is composed of a front cover and a rear cover which are detachably buckled, the motor is detachably arranged in the motor cover, and the motor and the motor cover form a detachable structure of the motor, so that the motor is convenient to maintain and replace. The base sleeve of the wind wheel is gap-fitted with the front cover, the shaft of the motor penetrates through the front cover and then penetrates out of the shaft sleeve of the base sleeve, the part of the shaft penetrating out of the shaft sleeve is locked on the base sleeve through a fastening nut, so as to realize the transmission connection between the motor and the wind wheel, and simultaneously realize the detachable connection between the wind wheel and the motor, thereby facilitating the maintenance and replacement of the wind wheel. The shaft ring of the guide vane is gap-fitted with the rear cover, and the shaft ring is detachably arranged on the connecting member of the rear cover, so as to realize the detachable connection between the guide vane and the motor, thereby facilitating the maintenance and replacement of the guide vane. Therefore, after the fan of the application is operated for a period of time, the technical personnel can detach the parts (for example, the motor, the wind wheel and the guide vane which are main functional parts in the motor) to maintain or replace them, thereby greatly reducing the maintenance and replacement cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only the embodiments of the present application, and other drawings can be obtained by the provided drawings without creative labor for those skilled in the art.

[0024] Figure 1 A plan view of the fan provided by the present application;

[0025] Figure 2 A Figure 1 A sectional view at A-A in the figure;

[0026] Figure 3 A structure schematic view of the motor cover provided by the present application;

[0027] Figure 4 A front view of the wind wheel provided by the present application;

[0028] Figure 5 A Figure 4 A sectional view at B-B in the figure;

[0029] Figure 6 A front view of the guide vane provided by the present application;

[0030] Figure 7 A Figure 6 A sectional view at C-C in the figure;

[0031] Figure 8 A rear view of the fan provided by the present application;

[0032] Figure 9 A Figure 8 A sectional view at D-D in the figure.

[0033] Reference signs:

[0034] 1-motor cover; 11-front cover; 12-rear cover; 13-connector; 14-casing fixing screw; 15-guide vane mounting hole; 16-torque resisting groove; 17-shaft step; 18-assembly process via hole;

[0035] 2-wind wheel; 21-base sleeve; 22-shaft sleeve; 22a-shaft sleeve end face;

[0036] 3-motor; 31-motor shaft;

[0037] 4-guide vane; 41-axle ring; 42-annular step; 43-nut mounting hole; 44-guide vane mounting nut; 45-convex rib; 46-customer mounting through hole;

[0038] 5-guide vane mounting screw;

[0039] 6-lock nut. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0041] The core of the utility model is to provide a kind of fan, the fan can be disassembled and assembled any component when maintenance replacement, without whole machine replacement, to reduce maintenance cost.

[0042] It should be noted that in the present embodiment, the orientation or positional relationship indicated by "front", "rear" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] The present application provides a kind of fan, including motor cover 1, wind wheel 2, motor 3 and guide vane 4.

[0044] Please refer to Figures 1 to 3 Motor cover 1 includes front cover 11 and rear cover 12, both ends opposite are equipped with connecting piece 13 and are detachably buckled connection through two connecting pieces 13.

[0045] Motor cover 1 is used to place motor 3, and the two constitute motor to be used as power source, motor cover 1 is composed of front cover 11 and rear cover 12, the end of front cover 11 towards rear cover 12 (i.e. rear end) is provided with first connecting piece, the end of rear cover 12 towards front cover 11 (i.e. front end) is provided with second connecting piece, first connecting piece and second connecting piece are detachably buckled connection, to realize that front cover 11 and rear end are buckled into a complete motor cover 1, simultaneously realize that front cover 11 and rear cover 12 are detachable, to facilitate the motor 3 in the disassembly and assembly of motor cover 1.

[0046] Preferably, first connecting piece and second connecting piece are both flange, and the two flanges are tightly connected together by machine shell fixing screw 14, this connection mode has higher bonding strength, to realize that front cover 11 and rear cover 12 are detachable, while improving the carrying capacity of motor cover 1.

[0047] Please refer to Figure 4 And Figure 5The wind wheel 2 comprises a base sleeve 21 which is sleeved with the front cover 11 in a clearance fit, and the base sleeve 21 is provided with a shaft sleeve 22.

[0048] The wind wheel 2 is used for sucking fluid and converting wind energy into mechanical energy. The wind wheel 2 is generally composed of a wind guide cover, moving blades and the base sleeve 21. The moving blades are arranged at intervals between the wind guide cover and the base sleeve 21. The base sleeve 21 is sleeved on the front cover 11 in a clearance fit, so that the base sleeve 21 can rotate relative to the front cover 11. The base sleeve 21 is provided with the shaft sleeve 22 for inserting the motor shaft 31 of the motor 3. The shaft sleeve 22 not only connects the motor shaft 31 and the base sleeve 21, but also avoids abrasion between the motor shaft 31 and the base sleeve 21.

[0049] Please refer to Figure 1 and Figure 9 The motor 3 is arranged in the motor cover 1. The motor shaft 31 of the motor 3 penetrates the front cover 11 and passes through the shaft sleeve 22, and is locked on the base sleeve 21 by the locking nut 6.

[0050] The front end of the front cover 11 is provided with a perforation for the motor shaft 31 of the motor 3 to pass through. The motor shaft 31 penetrates the perforation and is inserted into the shaft sleeve 22. The front end of the motor shaft 31 extends out of the shaft sleeve 22 and is locked on the base sleeve 21 by the locking nut 6. In this way, when the motor shaft 31 of the motor 3 rotates, the wind wheel 2 can be driven to rotate, that is, the transmission connection between the motor 3 and the wind wheel 2 is achieved. The motor shaft 31 is locked on the base sleeve 21 by the locking nut 6, that is, the wind wheel 2 and the motor 3 can be disassembled, so that the wind wheel 2 can be conveniently repaired and replaced.

[0051] Please refer to Figure 6 and Figure 7 The guide vane 4 comprises a shaft ring 41 which is sleeved with the rear cover 12 in a clearance fit, and the shaft ring 41 is detachably connected with the connecting piece 13 on the rear cover 12.

[0052] The guide vane 4 is used for guiding fluid to flow out. The guide vane 4 is generally composed of a wind guide cover, static blades and the shaft ring 41. The static blades are arranged at intervals between the wind guide cover and the shaft ring 41. The shaft ring 41 is sleeved on the rear cover 12 in a clearance fit, so that the shaft ring 41 can be installed on the second connecting piece by penetrating the rear cover 12. The shaft ring 41 is detachably connected with the second connecting piece. Preferably, the second connecting piece is a flange. The flange on the rear cover 12 and the shaft ring 41 are detachably connected by screws and other fasteners, so that the guide vane 4 can be conveniently repaired and replaced.

[0053] On the basis of the above embodiment, please refer to Figure 1 and Figure 5 The part of the motor shaft 31 which penetrates the front cover 11 is provided with a shaft step 17 which abuts against the front cover 11. The base sleeve 21 is a cap structure. The shaft sleeve 22 is inserted into the top cover of the base sleeve 21 and extends backward to abut against the shaft step 17.

[0054] Specifically, the base sleeve 21 is composed of a top cover and a cylinder around the top cover, and the shaft sleeve 22 is arranged in the top cover of the base sleeve 21. Correspondingly, the shaft step 17 is arranged on the front end face of the front cover 11 corresponding to the position of the through hole. In this way, when the wind wheel 2 is assembled, the base sleeve 21 is sleeved into the front cover 11, the shaft 31 is inserted into the shaft sleeve 22 through the through hole, and the shaft sleeve end face 22a abuts against the shaft step 17, that is, the wind wheel 2 is installed in place. Therefore, the shaft step 17 can function as an axial positioning of the wind wheel 2, and ensures that the wind wheel 2 is installed in place.

[0055] On the basis of the above embodiment, please refer to Figure 1 and Figure 9 The part of the shaft 31 that passes through the shaft sleeve 22 is provided with external threads matched with the internal threads of the lock nut 6. In this way, the shaft 31 is fastened on the base sleeve 21 in the form of internal and external thread connection, which not only realizes reliable connection between the motor 3 and the wind wheel 2, but also makes it more convenient to disassemble the wind wheel 2. In addition, the length of the external threads on the shaft 31 is about 1.2-1.5 times the diameter of the shaft 31.

[0056] Preferably, the shaft sleeve 22 is arranged at the middle position of the base sleeve 21 to ensure that the wind wheel 2 rotates stably when the motor 3 drives the wind wheel 2 to rotate.

[0057] On the basis of the above embodiment, one side surface of the shaft 31 is a plane, and the maximum distance between the plane and the circular arc surface of the shaft 31 in the radial direction is about 0.4-0.8 times the diameter of the shaft 31.

[0058] It can be understood that the shaft 31 is generally cylindrical, and the edge of the shaft 31 is chamfered along the axial direction to form a plane. The chamfering of the shaft 31 can reduce the resistance loss of the shaft 31 and improve the efficiency of the motor 3, so as to more stably and efficiently drive the wind wheel 2 to rotate. Correspondingly, the position of the shaft sleeve 22 corresponding to the plane of the shaft 31 is also chamfered to a plane to ensure the fit between the shaft sleeve 22 and the shaft 31.

[0059] On the basis of the above embodiment, please refer to Figure 3 , Figure 6 and Figure 9 The two connecting pieces 13 are circumferentially provided with a plurality of guide vane mounting holes 15 and one-to-one correspondence, and a pair of corresponding guide vane mounting holes 15 are used for inserting a screw; the inner side of the shaft ring 41 is provided with an annular step 42, and the annular step 42 is circumferentially provided with a plurality of nuts threadedly connected with the screw.

[0060] Specifically, the flange of the front cover 11 is circumferentially provided with a plurality of first guide vane mounting holes 15, the flange of the rear cover 12 is circumferentially provided with a plurality of second guide vane mounting holes 15, the inner side of the shaft ring 41 is provided with an annular step 42 for connecting with the second connecting member, the annular step 42 is circumferentially provided with a plurality of nut mounting holes 43, and the plurality of first guide vane mounting holes 15, the plurality of second guide vane mounting holes 15 and the plurality of threaded mounting holes are one-to-one correspondingly arranged. In this way, during assembly of the guide vane 4, a guide vane mounting nut 44 is arranged in each nut mounting hole 43, and the guide vane mounting screw 5 is fastened and connected to the guide vane mounting nut 44 in sequence through the first guide vane mounting hole 15, the second guide vane mounting hole 15 and the guide vane mounting nut 44, that is, the guide vane 4 is assembled on the motor cover 1.

[0061] Preferably, please refer to Figure 4 The top cover of the base sleeve 21 is provided with an assembly process via hole 18, which facilitates the operator to fasten the guide vane mounting screw 5 between the motor cover 1 and the guide vane 4.

[0062] On the basis of the above embodiment, please refer to Figure 3 The rear cover 12 is provided with a torque resisting groove 16 corresponding to the position of the guide vane mounting hole 15 for the guide vane mounting screw 5 to pass through.

[0063] Specifically, the rear cover 12 is circumferentially provided with a plurality of torque resisting grooves 16, and the plurality of torque resisting grooves 16 correspond one-to-one to the plurality of second guide vane mounting holes 15. In this way, the guide vane mounting screw 5 penetrates through the front and rear flanges in sequence and is inserted into the shaft ring 41 through the torque resisting groove 16. During operation of the fan, the torque resisting groove 16 can resist the torque generated by the rotation of the fan, so as to avoid the risk of fracture of the guide vane mounting screw 5 caused by the reverse torque of the fan during operation.

[0064] On the basis of the above embodiment, please refer to Figure 7 and Figure 9 The annular step 42 extends along the axial direction of the shaft ring 41 by a predetermined length, and the inner periphery of the annular step 42 is threadedly connected with the outer periphery of the rear cover 12. In this way, by adjusting the axial length of the annular step 42 screwed into the rear cover 12, the gap ΔH between the impeller 2 and the guide vane 4 can be adjusted, so as to ensure that the gap between the impeller 2 and the guide vane 4 is within a reasonable range.

[0065] On the basis of the above embodiment, please refer to Figure 6 The annular step 42 is provided with a plurality of protrusions 45 corresponding one-to-one to the plurality of guide vane mounting nuts 44, and the guide vane mounting nuts 44 are embedded in the protrusions 45. In this way, during operation of the fan, the protrusions 45 can resist the torque generated by the start and operation of the fan, so as to avoid loosening of the nuts.

[0066] On the basis of the above embodiment, please refer to Figure 6The guide vane 4 further comprises a wind deflector and a plurality of stationary vanes arranged between the wind deflector and the base sleeve 21, and the wind deflector is provided with a plurality of customer installation through holes 46 in the axial direction. Thus, the customer can install the fan by inserting customer installation screws into the customer installation through holes 46 and fixing them at specific positions.

[0067] In summary, in the production and assembly of the fan, the collar 41 of the guide vane 4 is sleeved into the rear cover 12, the protruding ribs 45 on the guide vane 4 are aligned with the guide vane installation holes 15, the guide vane installation screws 5 are sequentially inserted into the nuts in the protruding ribs 45 through the guide vane installation holes 15 on the two connecting pieces 13, and the assembly of the guide vane 4 is completed. The base sleeve 21 of the impeller 2 is sleeved into the front cover 11, the shaft 31 of the motor 3 is inserted into the shaft sleeve 22 of the base sleeve 21 and extends out, the locking nut 6 is screwed onto the extended part of the shaft 31 and locked on the base sleeve 21, and the assembly of the impeller 2 is completed.

[0068] After the fan is operated for a period of time, if the impeller 2 is damaged, the locking nut 6 is removed, the damaged impeller 2 is removed, a new impeller 2 is installed, and the impeller 2 is conveniently repaired and replaced.

[0069] If the motor 3 is damaged, the locking nut 6 is removed, the impeller 2 is removed, the guide vane installation screws 5 are removed, the guide vane 4 is removed, and then the screws between the two flanges are removed, the damaged motor 3 is removed, a new motor 3 is installed, and the motor 3 is repaired and replaced.

[0070] If the guide vane 4 is damaged, the customer installation screws and the guide vane installation screws 5 are removed, the damaged guide vane 4 is removed, and a new guide vane 4 is installed, i.e., the guide vane installation screws 5 and the customer installation screws are sequentially installed.

[0071] Therefore, the fan provided by the application can disassemble and assemble any component during repair and replacement, without the need for replacement of the whole machine, thereby reducing the repair cost.

[0072] It should be noted that in the present specification, the relationship terms such as first and second are only used to distinguish one entity from other entities, and do not necessarily require or imply any actual relationship or order between the entities.

[0073] The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0074] The above has carried out the detailed introduction to the fan provided by the utility model. The principle and implementation mode of the utility model are described by applying specific examples in this paper, and the above embodiment description is only used for helping to understand the method and core idea of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the principle of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A fan, characterized by, The utility model relates to a fan motor, including: A motor cover (1) includes a front cover (11) and a rear cover (12), both ends of which are provided with connecting pieces (13) and are detachably connected through the two connecting pieces (13); A wind wheel (2) includes a base sleeve (21) that is gap-fitted with the front cover (11), and the base sleeve (21) is provided with a shaft sleeve (22); A motor (3) is arranged in the motor cover (1), the shaft (31) of the motor (3) penetrates the front cover (11) and passes through the shaft sleeve (22), and is locked on the base sleeve (21) through a locking nut (6); A guide vane (4) includes a shaft ring (41) that is gap-fitted with the rear cover (12), and the shaft ring (41) is detachably connected with the connecting piece (13) on the rear cover (12).

2. The fan of claim 1, wherein The part of the shaft (31) that penetrates the front cover (11) is provided with a shaft step (17) that abuts against the front cover (11); The base sleeve (21) is a cap structure, the shaft sleeve (22) is inserted into the top cover of the base sleeve (21) and extends backward to abut against the shaft step (17).

3. The fan of claim 2, wherein, The part of the shaft (31) that penetrates the shaft sleeve (22) is provided with external threads that are connected with the internal threads of the locking nut (6).

4. The fan of claim 1, wherein The two connecting pieces (13) are circumferentially provided with a plurality of guide vane mounting holes (15) and one-to-one correspondence, and a pair of corresponding guide vane mounting holes (15) are used for inserting a guide vane mounting screw (5); The inner side of the shaft ring (41) is provided with an annular step (42), and the annular step (42) is circumferentially provided with a plurality of guide vane mounting nuts (44) that are threadedly connected with the guide vane mounting screws (5).

5. The fan of claim 4, wherein, The rear cover (12) is provided with a torque-resistant groove (16) for the guide vane mounting screw (5) to pass through at the position corresponding to the guide vane mounting hole (15).

6. The fan of claim 4, wherein, The annular step (42) extends along the axial direction of the shaft ring (41) by a predetermined length, and the inner periphery of the annular step (42) is threadedly connected with the outer periphery of the rear cover (12).

7. The fan of claim 4, wherein The annular step (42) is provided with a plurality of protrusions (45) corresponding to a plurality of nuts, and the nuts are embedded in the protrusions (45).

8. The fan of any one of claims 1 to 7, wherein, The guide vane (4) further includes a wind deflector and a plurality of stationary vanes arranged between the wind deflector and the base sleeve (21), and the wind deflector is axially provided with a plurality of customer mounting through holes (46) for customer installation and fixation of the fan.

9. The fan of any one of claims 1 to 7, wherein, One side surface of the shaft (31) is a plane, and the maximum distance between the plane and the arc surface of the shaft (31) in the radial direction is about 0.4-0.8 times the diameter of the shaft (31).

10. The fan of any one of claims 1 to 7, wherein, The length of the external threads on the shaft (31) is about 1.2-1.5 times the diameter of the shaft (31).

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