Bearing heat dissipation structure of vortex fan

Abstract

The utility model belongs to the technical field of fans, and particularly relates to a bearing heat dissipation structure of a vortex fan, which comprises a driving motor, a bearing and a heat dissipation device, the pump body is connected to one end of the driving motor, an impeller connected with the motor shaft is arranged in the pump body, and the end of the motor shaft penetrates through the pump body to form an extending end; the mounting seat is arranged on the pump body, a bearing is mounted in the mounting seat, and the bearing is connected with the extension end of the motor shaft; the heat dissipation fan blades are fixed to the extending end, the heat dissipation fan blades are driven by the motor shaft to rotate, and the heat dissipation fan blades are used for dissipating heat of the bearing in the mounting base through rotation of the heat dissipation fan blades; the air flow generated by the heat dissipation fan blades is used for dissipating heat of the mounting seat and the bearing, so that the phenomena of lubricating grease aging, rolling body abrasion and clamping stagnation of the bearing due to high temperature can be effectively prevented, the overall operation reliability of the vortex fan is improved, and the service life of the vortex fan is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan technical field, especially whirl fan's bearing heat radiation structure. BACKGROUND

[0002] The whirl fan is a new type of air supply equipment, which is provided with dozens of fan blades on the impeller, so that the air in the impeller is affected by centrifugal force when the impeller rotates, enters the annular chamber of the pump body, and then returns to the impeller to circulate, so that the air is uniformly accelerated and finally leaves the pump body with very high energy.

[0003] Referring to the whirl fan disclosed in Chinese utility model CN220286005U, the whirl fan comprises a pump body, an impeller and a motor, the pump body is composed of volute one and volute two, the impeller is installed in the pump body, and the impeller and the pump body cooperate to form an annular air chamber. The end of the impeller is provided with a bearing, and the bearing and the impeller are installed in the narrow pump body, the heat dissipation environment is poor, and in addition, the rotating impeller rotates at high speed, the bearing heats up seriously after long-term work, which easily leads to damage and affects the normal work of the fan. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a bearing heat radiation structure of a whirl fan.

[0005] The utility model is realized by the following way:

[0006] The bearing heat radiation structure of the whirl fan comprises:

[0007] A driving motor is provided with a motor shaft;

[0008] A pump body is connected to one end of the driving motor, the pump body is provided with an impeller connected to the motor shaft, and the end of the motor shaft penetrates the pump body to form an extension end;

[0009] A mounting seat is arranged on the pump body and is provided with a bearing, and the bearing is connected to the extension end of the motor shaft;

[0010] A heat dissipation fan blade is fixed on the extension end and is driven to rotate by the motor shaft to dissipate heat for the bearing in the mounting seat.

[0011] Further, a plurality of heat dissipation vents are formed in the outer wall of the mounting seat.

[0012] Further, a sleeve hole is arranged in the center of the heat dissipation fan blade, and the heat dissipation fan blade is sleeved on the extension end through the sleeve hole to be connected to the extension end.

[0013] Further, the mounting seat cover is arranged on one side of the pump body, a connecting boss is arranged on the end edge of the mounting seat connected with the pump body, and the connecting boss is provided with a corresponding connecting hole on the pump body.

[0014] Further, the mounting seat is provided with a mounting groove for placing the bearing, and a pressing ring is fixed on the mounting groove to limit the end face of the bearing and fix the bearing in the mounting groove.

[0015] Further, a collar part is arranged on one side of the pressing ring, and a ring groove part is arranged in the mounting groove and formed on the outer edge of the bearing, so that the collar part is arranged in the ring groove part when the pressing ring is fixed on the mounting groove.

[0016] Further, the bottom inner edge of the mounting seat is provided with a plurality of pressing ring mounting blocks, and the mounting groove for mounting the bearing is formed between the plurality of pressing ring mounting blocks.

[0017] Further, a plurality of notch grooves are arranged on the pressing ring mounting blocks.

[0018] Further, the extension end is provided with a connecting pressing sleeve, the bearing is fixed on the extension end and abuts against one end of the connecting pressing sleeve, the other end of the connecting pressing sleeve is provided with a pressing mounting boss, and the pressing mounting boss is arranged in the pump body and abuts against the impeller.

[0019] Compared with the prior art, the utility model has the following prominent and beneficial technical effects:

[0020] 1. The airflow generated by the heat dissipation fan blade is used for heat dissipation of the mounting seat and the bearing, so that the aging of lubricating grease, the wear of rolling elements and the jamming phenomenon of the bearing caused by high temperature can be effectively prevented, and the operation reliability and service life of the whole vortex fan are improved.

[0021] 2. The pressing ring structure is arranged to ensure that the bearing is stably and safely installed, the whole structure is simple and compact, the manufacturing cost is low, and the maintenance is convenient. DRAWINGS

[0022] Figure 1 is a structural schematic view of the vortex fan.

[0023] Figure 2 is a sectional schematic view of the vortex fan.

[0024] Figure 3 is a sectional schematic view of the mounting seat in the vortex fan.

[0025] Figure 4 is an exploded schematic view of the motor shaft and the mounting seat.

[0026] Figure 5is the schematic diagram of explosion at the mounting seat.

[0027] Figure 6 is the schematic diagram of the inside of the mounting seat.

[0028] Meaning of the reference signs in the drawing:

[0029] 1. drive motor; 11. motor shaft; 12. extension end; 13. rotor; 14. stator;

[0030] 2. pump body; 21. impeller;

[0031] 3. mounting seat; 31. vent; 32. connecting boss; 33. connecting hole; 34. mounting groove; 341. ring groove part; 35. compression ring; 351. sleeve part; 36. compression ring mounting block; 361. notch groove; 37. connecting compression sleeve; 371. press-fitting boss;

[0032] 4. bearing; 5. heat dissipation fan blade; 51. sleeve hole; DETAILED DESCRIPTION

[0033] The utility model will be further described in connection with specific embodiments:

[0034] A bearing heat dissipation structure of a vortex fan, comprising a drive motor 1, a pump body 2, a mounting seat 3, a bearing 4 and a heat dissipation fan blade 5, the drive motor 1 has a shell, the shell is equipped with a rotor 13 and a stator 14, the rotor 13 is connected with a motor shaft 11, the pump body 2 is connected at one side of the drive motor 1, the pump body 2 is equipped with an impeller 21 connected with the motor shaft 11; one end of the motor shaft 11 penetrates the pump body 2 to the outside of the pump body 2, and the mounting seat 3 is arranged on the motor shaft 11, the bearing 4 is arranged in the mounting seat 3, the motor shaft 11 has an extension end 12 penetrating the pump body 2 and located in the mounting seat 3, and the extension end 12 is connected with the bearing 4 in the mounting seat 3. The heat dissipation fan blade 5 is fixed on the extension end 12, the heat dissipation fan blade 5 is driven to rotate by the motor shaft 11, and is used for dissipating heat for the bearing 4 in the mounting seat 3 through the rotation of the heat dissipation fan blade 5.

[0035] Reference Figure 2 , 3The pump body 2 is provided with a through hole on one side, the motor shaft 11 is arranged in the through hole, and the extension end 12 is located at the end of the motor shaft 11 and outside the pump body 2. The mounting seat 3 is arranged outside the through hole and on one side of the pump body 2. A connecting boss 32 is arranged on the end edge of the mounting seat 3 connected with the pump body 2. The connecting boss 32 is integrally formed with the mounting seat 3, and corresponding connecting holes 33 are arranged on the connecting boss 32 and the pump body 2. The connecting holes 33 are threaded holes. During installation, the connecting boss 32 is opposite to the connecting holes 33 on the pump body 2, and screws are arranged in the connecting holes 33 to fix the mounting seat 3 on the pump body 2.

[0036] The mounting seat 3 is provided with a mounting groove 34 for placing the bearing 4. The mounting groove 34 is used for mounting the bearing 4. The extension end 12 of the motor shaft 11 is connected with the bearing 4 in the mounting groove 34. The heat dissipation fan blade 5 is arranged on the extension end 12 opposite to the bearing 4. During operation of the motor, the motor shaft 11 rotates at high speed to drive the heat dissipation fan blade 5 to rotate synchronously. When the heat dissipation fan blade 5 rotates, a negative pressure area is formed outside the mounting seat 3. Cold air is sucked from the outside into the mounting seat 3, so that the cold air absorbs heat generated by the bearing 4 when passing around the bearing 4. The airflow generated by the heat dissipation fan blade 5 can reduce the temperature of the mounting seat 3 and the bearing 4 by about 10-15°C compared with the structure without the fan blade. The aging of lubricating grease, wear and seizure of rolling elements caused by high temperature of the bearing 4 are effectively prevented, and the overall operation reliability and service life of the eddy current fan are improved.

[0037] As shown in Figure 3 、 4 The mounting seat 3 is provided with a plurality of heat dissipation vents 31 on the side. The vents 31 are in strip shape and are uniformly arranged on the outer wall of the mounting seat 3. The heat dissipation fan blade 5 sucks cold air through the vents 31 to dissipate heat.

[0038] Further, the heat dissipation fan blade 5 is provided with a sleeve hole 51 in the center. The heat dissipation fan blade 5 is connected to the extension end 12 of the motor shaft 11 through the sleeve hole 51. The sleeve hole 51 is circular and can be directly sleeved on the extension end 12 and fixed by a fastening screw, which is convenient and fast to install.

[0039] In combination with Figure 4 、 5As shown, the mounting groove 34 is fixed with a pressing ring 35, which is used to limit on the end face of the bearing 4 to fix the bearing 4 in the mounting groove 34. Specifically, the bottom of the mounting seat 3 is provided with a plurality of pressing ring mounting blocks 36, which are arc-shaped, and a plurality of the pressing ring mounting blocks 36 are sequentially connected to form a ring structure to form a circular mounting groove 34, the pressing ring 35 is fixed on the mounting groove 34, and the outer edge of the pressing ring 35 is in contact with the pressing ring mounting block 36, which is used to be fixed on the pressing ring mounting block 36 by a fastener, and the bearing 4 is fixed in the mounting groove 34 by the pressing ring 35 pressing the outer ring of the bearing 4. The structure of the plurality of pressing ring mounting blocks 36 can effectively reduce the actual material of the whole mounting seat 3, save the cost, and the pressing ring mounting block 36 is provided with a plurality of notch grooves 361, which further reduces the cost. In summary, the structure of the pressing ring 35 is provided to ensure that the bearing 4 is installed stably, safely and reliably, and the whole structure is simple, compact, low in manufacturing cost and convenient to maintain.

[0040] Further, one side of the pressing ring 35 is provided with a sleeve ring part 351, and the mounting groove 34 is provided with a ring groove part 341 formed on the outer edge of the bearing 4, and when the pressing ring 35 is fixed on the mounting groove 34, the sleeve ring part 351 is located in the ring groove part 341. Figure 4 、 5 As shown, the size of the mounting groove 34 in the application is slightly larger than the size of the bearing 4, so that when the bearing 4 is installed in the mounting groove 34, a ring groove part 341 is formed on the outer edge of the bearing 4, and the sleeve ring part 351 is arranged on the axial surface of the pressing ring 35, and during installation, the sleeve ring part 351 is directly inserted into the ring groove part 341, and the bearing 4 is radially positioned by the sleeve ring part 351.

[0041] Further, the extension end 12 is provided with a connecting pressing sleeve 37, the bearing 4 is fixed on the extension end 12 and abuts on one end of the connecting pressing sleeve 37, the other end of the connecting pressing sleeve 37 is provided with a pressing mounting boss 371, which is located in the pump body 2 and abuts on the impeller 21. Figure 2 As shown, the pressing sleeve is in contact with the inner ring of the bearing 4, and the bearing 4 limits the pressing sleeve to press the side surface of the impeller 21 to achieve the positioning and fixing of the impeller 21; accordingly, the cooling fan blade 5 is sleeved on the connecting pressing sleeve 37.

[0042] The above embodiments are only preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

[0043] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are merely intended to facilitate the understanding of the content disclosed in the present application, to be understood and read by those skilled in the art, and are not intended to limit the conditions that can be implemented by the present application, and therefore do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present application are only for the convenience of clear description, and are not intended to limit the scope of the present application that can be implemented, and the change or adjustment of the relative relationship without substantially changing the technical content is also considered as the scope of the present application that can be implemented.

[0044] It is also necessary to point out that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. When an element is referred to as "connected" to another element, it can be directly connected to another element or indirectly connected to another element through a middle element.

[0045] In addition, the description involving "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection claimed by the present application.

Claims

1. A bearing cooling structure of an axial flow fan, characterized by, The utility model relates to a kind of cooling fan for motor pump, including: Driving motor (1), the driving motor (1) with shell, rotor (13) and stator (14) are equipped in shell, motor shaft (11) is arranged in it; Pump body (2) is connected in one end of the driving motor (1), the pump body (2) is equipped with impeller (21) connected with the motor shaft (11) in it, and the end of motor shaft (11) penetrates the pump body (2), forms extension end (12); Mounting seat (3) is arranged on the pump body (2), bearing (4) is mounted in it, the bearing (4) is connected with the extension end (12) of the motor shaft (11); Radiating fan blade (5) is fixed on the extension end (12), and radiating fan blade (5) is rotated by the motor shaft (11), and is used to cool bearing (4) in mounting seat (3) by the rotation of radiating fan blade (5).

2. The bearing heat sink structure for a vortex fan according to claim 1, characterized by: The outer wall of the mounting seat (3) is provided with a plurality of heat dissipation vents (31).

3. The bearing heat sink structure for a vortex fan according to claim 2, characterized by: The center of the radiating fan blade (5) is provided with a sleeve hole (51), and the radiating fan blade (5) is sleeved on the extension end (12) through the sleeve hole (51) to be connected with the extension end (12).

4. The bearing heat sink structure for a vortex fan according to claim 1, characterized by: The mounting seat (3) is covered on one side of the pump body (2), and a connecting boss (32) is arranged on the end edge of the mounting seat (3) connected with the pump body (2), and the connecting boss (32) is provided with a corresponding connecting hole (33) on the pump body (2).

5. The bearing heat sink structure for a vortex fan according to any one of claims 1 to 4, characterized by: The mounting seat (3) is provided with a mounting groove (34) for placing the bearing (4), and a press ring (35) is fixed on the mounting groove (34), and the press ring (35) is used to limit the end face of the bearing (4) to fix the bearing (4) in the mounting groove (34).

6. The bearing heat sink structure for a vortex fan according to claim 5, characterized by: The side of the press ring (35) is provided with a sleeve ring part (351), and the mounting groove (34) is provided with a ring groove part (341) formed on the outer edge of the bearing (4), when the press ring (35) is fixed on the mounting groove (34), the sleeve ring part (351) is located in the ring groove part (341).

7. The bearing heat sink structure for a vortex flow fan according to claim 6, characterized by: The inner edge of the bottom of the mounting seat (3) is provided with a plurality of press ring mounting blocks (36), and a mounting groove (34) for mounting the bearing (4) is formed between the plurality of press ring mounting blocks (36).

8. The bearing heat sink structure for a vortex fan according to claim 7, characterized by: A plurality of notch grooves (361) are arranged on the press ring mounting block (36).

9. The bearing heat sink structure for a vortex fan according to any one of claims 1 to 4, characterized by: The extension end (12) is provided with a connecting press sleeve (37), the bearing (4) is fixed on the extension end (12) and abuts on one end of the connecting press sleeve (37), the other end of the connecting press sleeve (37) is provided with a press-fitting boss (371), and the press-fitting boss (371) is located in the pump body (2) and abuts on the impeller (21).

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