Fan with motor cooling function

Abstract

The utility model relates to the technical field of fans, in particular to a fan with a motor cooling function, which comprises a base, a fan shell and a mounting frame are mounted at the upper end of the base, a driving motor is mounted at the upper end of the mounting frame, a fan wheel connected with the output end of the driving motor is mounted in the fan shell, and the driving motor comprises a shell. A front end cover and a rear end cover are connected to the two ends of the shell through screws respectively, a rotating shaft connected with the front end cover and the rear end cover through bearings is rotationally arranged in the shell, a fan blade set is installed at the rear end of the rotating shaft, a shell cover is connected to the rear end of the shell through bolts, and a spiral heat exchange pipe connected with an external cooling water system is fixed in the shell cover. The cooling device has the advantages that external air is brought into the shell cover through rotation of the fan blade group, enters the shell after being cooled by the spiral heat exchange tube, and cools high-heating components such as an internal rotor, a rotating shaft and a bearing, so that the heat dissipation efficiency and effect are improved.

Description

Technical Field

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

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. A fan generally includes a fan housing, a motor and an impeller. A motor is provided at the rear end of the fan housing. The impeller is arranged in the fan housing and connected to the output shaft of the motor. When in operation, the output shaft of the motor drives the impeller to rotate, thereby achieving the purpose of discharging gas.

[0003] The motor is generally composed of a rotor, a stator, a shaft, a cooling fan and a casing. The rotor will generate a lot of heat during rotation, and the heat generated is mainly dissipated through the cooling fan and the casing. This heat dissipation method has a better heat dissipation effect on the surface of the motor, but for the high-heat generating components inside the motor, such as the rotor, shaft and bearings, the heat generated by these components is difficult to dissipate, which can easily cause the motor to overheat and cause damage to the fan. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the motor of the fan mainly dissipates heat through the cooling fan and the casing, but the heat generated by the high-heat generating components inside the motor is difficult to dissipate, which easily causes the motor to overheat and thus damage the fan.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: a fan with motor cooling, comprising a base, a fan casing and a mounting frame are installed on the upper end of the base, a driving motor is installed on the upper end of the mounting frame, a fan wheel connected to the output end of the driving motor is installed in the fan casing, the driving motor comprises a shell, a front end cover and a rear end cover are screwed together at both ends of the shell, a rotating shaft is rotatably provided in the shell, passing through the front end cover and the rear end cover and connected to the bearings thereof, a fan blade group is installed at the rear end of the rotating shaft, the rear end of the shell is bolted to the shell cover, a spiral heat exchange tube is fixed in the shell cover by a clamp, and the spiral heat exchange tube is connected to an external cooling water system.

[0008] Furthermore, the spiral heat exchange tube is wound around the outside of the rotating shaft and is located between the rear end cover and the fan blade group. The spiral heat exchange tube is conical and has a larger diameter at one end close to the fan blade group, which is the cooling water inlet end. The wind direction of the fan blade group faces inward.

[0009] Furthermore, the rear end cover includes a bearing seat through which the rotating shaft passes and is connected to the bearing, and the side wall of the bearing seat is provided with a plurality of support rods screwed to one end of the shell, and fan-shaped dustproof nets are screwed to adjacent support rods.

[0010] Furthermore, an exhaust duct is provided on the outer side of the front end of the shell, and a dustproof net is screwed to the exhaust duct.

[0011] Furthermore, a second dustproof net is provided at the rear end of the shell cover, and through holes for the two ends of the spiral heat exchange tube to pass through are provided on the outer side of the shell cover.

[0012] Furthermore, a plurality of annular heat dissipation fins arranged at equal intervals are provided on the outer side of the shell.

[0013] 3. Beneficial Effects

[0014] The advantages of the utility model compared with the prior art are:

[0015] 1. When the drive motor is running, the fan blade group is driven to rotate, so that the outside air enters the shell cover, and then enters the drive motor after being cooled by the spiral heat exchange tube, cooling the high-heat-generating components such as the rotor, shaft and bearing inside the drive motor, thereby improving the heat dissipation efficiency and effect.

[0016] 2. The spiral heat exchange tube is wound around the outside of the rotating shaft between the rear end cover and the fan blade group, and is tapered, so that the air brought in by the rotation of the fan blade group can fully contact and exchange heat with it, so that the incoming air is cooled, which is convenient for cooling the inside of the shell.

[0017] 3. The air brought in by the rotation of the fan blade group passes through the dust-proof net 2 and the fan-shaped dust-proof net to filter dust impurities and then enter the shell to prevent dust impurities from entering the shell and affecting the operation of the drive motor; the hot air is discharged through the exhaust pipe, and the dust-proof net is used to prevent dust impurities from entering the shell when the drive motor stops running. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the utility model.

[0019] Figure 2 It is an exploded structural diagram of the driving motor part of the utility model.

[0020] Figure 3 It is a structural diagram of the spiral heat exchange tube of the utility model.

[0021] Figure 4 It is a cross-sectional structural diagram of the shell of the utility model.

[0022] As shown in the figure: 1. Base; 2. Fan casing; 3. Mounting bracket; 4. Drive motor; 5. Shell; 6. Front cover; 7. Rear cover; 701. Bearing seat; 702. Support rod; 8. Rotating shaft; 9. Fan blade group; 10. Shell cover; 1001. Through hole; 11. Spiral heat exchange tube; 12. Fan-shaped dustproof net; 13. Dustproof net; 14. Dustproof net II; 15. Heat sink fins. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] Embodiment 1

[0025] Combined with Figure 1 and attached Figure 2 A fan with motor cooling comprises a base 1, a fan casing 2 and a mounting frame 3 are mounted on the upper end of the base 1, a driving motor 4 is mounted on the upper end of the mounting frame 3, a fan wheel connected to the output end of the driving motor 4 is mounted in the fan casing 2, the driving motor 4 comprises a shell 5, a front end cover 6 and a rear end cover 7 are screwed to each end of the shell 5, a rotating shaft 8 passing through the front end cover 6 and the rear end cover 7 and connected to the bearings thereof is rotatably arranged in the shell 5, a fan blade group 9 is mounted on the rear end of the rotating shaft 8, a shell cover 10 is bolted to the rear end of the shell 5, a spiral heat exchange tube 11 is fixed in the shell cover 10 by a clamp, and the spiral heat exchange tube 11 is connected to an external cooling water system.

[0026] Combined with the above structure, when the drive motor 4 is running, the rotor drives the shaft 8 to rotate, thereby rotating the fan blade group 9, so that the outside air enters the shell cover 10, and enters the drive motor 4 after being cooled by the spiral heat exchange tube 11, thereby cooling the high-heat generating components such as the rotor, shaft and bearings inside the drive motor 4, thereby improving the heat dissipation efficiency and effect.

[0027] Combined with Figure 2 , Attachment Figure 3 The spiral heat exchange tube 11 is wound around the outside of the rotating shaft 8 and is located between the rear end cover 7 and the fan blade group 9. The spiral heat exchange tube 11 is conical, and the end close to the fan blade group 9 has a larger diameter, which is the cooling water inlet end. The wind direction of the fan blade group 9 faces inward.

[0028] In combination with the above structure, the spiral heat exchange tube 11 is conical, so that the air brought in by the rotation of the fan blade group 9 can fully contact the spiral heat exchange tube 11. Cooling water circulates into the spiral heat exchange tube 11 through an external cooling water system to cool the incoming air, thereby facilitating heat dissipation and cooling of the inside of the drive motor 4.

[0029] Embodiment 2

[0030] Based on the first embodiment, combined with the attached Figure 4 The rear end cover 7 includes a bearing seat 701 through which the rotating shaft 8 passes and is bearing-connected. The side wall of the bearing seat 701 is provided with a plurality of support rods 702 screwed to one end of the shell 5. A fan-shaped dustproof net 12 is screwed to the adjacent support rods 702. An exhaust duct 501 is provided on the outer side of the front end of the shell 5, and a dustproof net 13 is screwed to the exhaust duct 501.

[0031] Combined with Figure 2 A dustproof net 14 is disposed at the rear end of the shell cover 10, and through holes 1001 are disposed on the outer side of the shell cover 10 for the two ends of the spiral heat exchange tube 11 to pass through.

[0032] Combined with the above structure, the air brought in by the rotation of the fan blade group 9 is filtered through the dustproof net 14 and the fan-shaped dustproof net 12 to filter dust impurities, thereby preventing dust impurities from entering the shell 5 and affecting the operation of the drive motor 4. The hot air is discharged through the exhaust pipe 501, and the dustproof net 13 is used to prevent dust impurities from entering the shell 5 when the drive motor 4 stops running.

[0033] Combined with Figure 4 The outer side of the shell 5 is provided with a plurality of annular heat dissipation fins 15 arranged at equal distances to facilitate heat dissipation.

[0034] The specific usage is as follows:

[0035] When the driving motor 4 is running, the rotor drives the rotating shaft 8 to rotate, thereby rotating the fan blade group 9, so that the outside air enters the shell cover 10 after being filtered through the dustproof net 14. The outside air is cooled by the spiral heat exchange tube 11 and filtered through the fan-shaped dustproof net 12 before entering the shell 5, cooling the high-heat generating components such as the rotor, rotating shaft and bearings inside the driving motor 4, and then the hot air is discharged through the exhaust pipe 501. The outer side of the shell 5 is provided with heat dissipation fins 15 for easy heat dissipation, which improves the heat dissipation efficiency and effect, ensures the service life of the driving motor 4, and ensures the service life of the fan.

[0036] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A fan with motor cooling, comprising a base (1), a fan housing (2) and a mounting frame (3) being mounted on the upper end of the base (1), a drive motor (4) being mounted on the upper end of the mounting frame (3), a fan wheel connected to the output end of the drive motor (4) being mounted in the fan housing (2), characterized in that: The driving motor (4) comprises a housing (5), and the two ends of the housing (5) are connected to a front cover (6) and a rear cover (7) by screws. A rotating shaft (8) is rotatably arranged in the housing (5) and passes through the front cover (6) and the rear cover (7) and is connected to the bearings thereof. A fan blade group (9) is installed at the rear end of the rotating shaft (8). The rear end of the housing (5) is bolted to a housing cover (10), and a spiral heat exchange tube (11) is fixed in the housing cover (10) by a clamp, and the spiral heat exchange tube (11) is connected to an external cooling water system.

2. A fan with motor cooling according to claim 1, characterized in that: The spiral heat exchange tube (11) is wound around the outside of the rotating shaft (8) and is located between the rear end cover (7) and the fan blade group (9). The spiral heat exchange tube (11) is conical and has a larger diameter at one end close to the fan blade group (9). This end is the cooling water inlet end. The wind direction of the fan blade group (9) is inward.

3. A fan with motor cooling according to claim 1, characterized in that: The rear end cover (7) includes a bearing seat (701) through which the rotating shaft (8) passes and is connected to a bearing, and the side wall of the bearing seat (701) is provided with a plurality of support rods (702) screwed to one end of the shell (5), and a fan-shaped dustproof net (12) is screwed to adjacent support rods (702).

4. A fan with motor cooling according to claim 1, characterized in that: An exhaust pipe (501) is provided on the outer side of the front end of the shell (5), and a dustproof net (13) is screwed to the exhaust pipe (501).

5. The fan with motor cooling according to claim 1, characterized in that: A second dust screen (14) is provided at the rear end of the shell cover (10), and through holes (1001) through which the two ends of the spiral heat exchange tube (11) pass are provided on the outside of the shell cover (10).

6. A fan with motor cooling according to claim 1, characterized in that: The outer side of the housing (5) is provided with a plurality of annular heat dissipation fins (15) which are arranged at equal intervals.

Images