Cooling fan with lubricating oil circulating function

Abstract

The invention relates to the technical field of cooling fans, and discloses a cooling fan capable of circulating lubricating oil, a motor is arranged between a fan blade assembly and a mounting seat, and the motor comprises a shell, a magnetic ring, a magnetic core, an oil shaft and a shaft core which are sequentially arranged from outside to inside; the fan blade assembly is installed at the end of the shaft core, the side, located above the oil shaft, of the surface of the shaft core is fixedly sleeved with a clamping spring, and an oil storage cavity is formed in the position, located below the oil shaft, of the outer side of the shaft core. When the fan runs, lubricating oil in the oil storage cavity flows upwards along a gap between the outer wall of the shaft core and the inner wall of the oil shaft, when the lubricating oil flows to the position of the clamping spring, under the action of centrifugal force, the lubricating oil flows along the lower surface of the clamping spring and is thrown out, and the lubricating oil is thrown to the inner wall of the mounting column; and then the lubricating oil flows back to the oil storage cavity along a gap between the inner wall of the mounting column and the outer wall of the oil shaft, so that the functions of real lubrication and protection are achieved, and the quality and the service life of the fan are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat dissipation fans, in particular to a heat dissipation fan with lubricating oil circulation. BACKGROUND

[0002] Electronic products have become an indispensable part of people's daily life, and electronic products often generate heat energy when working, so people often attach heat dissipation devices to the heat generating parts of electronic products to dissipate heat.

[0003] However, the existing hydraulic heat dissipation fan has a fixed snap spring, and the fan rotates for a long time. Under the action of centrifugal force, the internal lubricating oil will flow outward along the shaft core. After a long time, the lubricating oil will become less and eventually dry, causing fan noise, jamming and other adverse phenomena, which seriously shortens the service life of the fan. Therefore, the present application provides a heat dissipation fan with lubricating oil circulation. SUMMARY

[0004] The present application aims to provide a heat dissipation fan with lubricating oil circulation to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a heat dissipation fan with lubricating oil circulation, comprising an outer frame horizontally placed and a fan blade assembly arranged inside the outer frame, a mounting seat is arranged at the middle of one side of the outer frame, a mounting column is arranged at the center of the mounting seat, an installation hole is arranged at the center of the mounting column, the fan blade assembly is installed on the mounting seat, a motor is arranged between the fan blade assembly and the mounting seat, The motor comprises an outer shell, a magnetic ring, a magnetic core, an oil shaft and a shaft core arranged from outside to inside in sequence; The fan blade assembly is installed at the end of the shaft core, the shaft core with the outer sleeve of the oil shaft is inserted into the shaft center of the mounting column, the snap spring is fixedly sleeved on one side of the shaft core surface above the oil shaft, and the oil storage cavity is arranged at the position below the oil shaft outside the shaft core; When the shaft core rotates, under the action of centrifugal force, the lubricating oil in the oil storage cavity flows upward along the gap between the outer wall of the shaft core and the inner wall of the oil shaft. When the lubricating oil flows to the position of the snap spring, under the action of centrifugal force, the lubricating oil flows along the lower surface of the snap spring and is thrown out. The lubricating oil is thrown onto the inner wall of the mounting column, and then the lubricating oil returns to the oil storage cavity along the gap between the inner wall of the mounting column and the outer wall of the oil shaft.

[0006] Among them, the support rod is arranged in an annular array around the mounting seat, the end of the support rod is fixedly connected with the outer frame, and the mounting seat is fixed at the center of one side of the outer frame through the support rod.

[0007] The fan blade assembly comprises a fan blade seat fixedly installed at the shaft core end portion, and an array of fan blades is arranged around the fan blade seat.

[0008] The shell wraps the magnetic ring, the magnetic ring is sleeved outside the magnetic core, and the magnetic core is sleeved outside the mounting column.

[0009] The bottom of the magnetic core is provided with a PCB plate, a hollow slot matched with the mounting column is formed at the center of the PCB plate, and the PCB plate is sleeved outside the mounting column through the hollow slot.

[0010] The top of the inside of the mounting hole is provided with a partition plate, a through hole matched with the shaft core is formed at the center of the partition plate, one side of the inside of the mounting hole below the partition plate is a lubricating oil flow cavity, and the shaft core sleeved with an oil shaft is located in the lubricating oil flow cavity.

[0011] The inner diameter of the through hole is larger than the diameter of the cross section of the shaft core, and the diameter of the snap spring is larger than the inner diameter of the through hole.

[0012] One side of the surface of the shaft core is provided with an annular groove matched with the snap spring, and the snap spring is fixedly sleeved on the shaft core through the annular groove.

[0013] The bottom of the mounting column is threadedly installed with an oil seal cover, the oil seal cover seals the bottom of the lubricating oil flow cavity, and an oil storage cavity is formed below the oil shaft.

[0014] The inside of the oil seal cover is provided with a graphite pad at a position corresponding to the mounting hole.

[0015] Compared with the prior art, the beneficial effects of the present application are: The position of the fan snap spring is adjusted, so that the snap spring rotates with the shaft core; when the fan is running, the lubricating oil in the oil storage cavity flows upward along the gap between the outer wall of the shaft core and the inner wall of the oil shaft, and when the lubricating oil flows to the position of the snap spring, the lubricating oil flows along the lower surface of the snap spring under the action of centrifugal force and is thrown out, the lubricating oil is thrown onto the inner wall of the mounting column, and then the lubricating oil flows back to the oil storage cavity along the gap between the inner wall of the mounting column and the outer wall of the oil shaft. Since the fan is always running, the hydraulic oil will run upward along the shaft core under the action of centrifugal force, and this behavior will be repeated, thereby achieving the functions of true lubrication and protection, and improving the quality and service life of the fan. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall shaft measurement structure of the present application; Figure 2 It is a schematic diagram of the front view structure of the present application; Figure 3 As Figure 2 A-A cross-sectional structure schematic diagram in the middle; Figure 4 As Figure 3 A partial enlarged structure schematic diagram in the middle; Figure 5 As a structure schematic diagram of the shell and the fan blade assembly of the present application in a separated state; Figure 6 As a front structure schematic diagram of the shell of the present application; Figure 7 As a back structure schematic diagram of the shell of the present application; Figure 8 As a first direction explosion structure schematic diagram of the motor of the present application; Figure 9 As a second direction explosion structure schematic diagram of the motor of the present application.

[0017] In the figure: 100, outer frame; 101, support rod; 102, mounting seat; 103, mounting column; 200, fan blade assembly; 201, fan blade seat; 202, fan blade; 203, shell; 204, magnetic ring; 205, magnetic core; 206, shaft core; 207, oil shaft; 208, annular groove; 209, circlip; 210, PCB board; 211, oil seal cover; 212, graphite pad. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0019] Please refer to Figures 1-9 The present application provides a technical solution: a lubricating oil circulating heat dissipation fan, comprising a horizontally placed outer frame 100 and a fan blade assembly 200 arranged inside the outer frame 100. The heat dissipation fan is horizontally placed, the fan blade assembly 200 blows upward to dissipate heat, and the lubricating oil inside the heat dissipation fan can return under the action of gravity.

[0020] The middle of one side of the outer frame 100 is provided with a mounting seat 102, and a support rod 101 is arranged in a ring array around the mounting seat 102. The end of the support rod 101 is fixedly connected with the outer frame 100. The mounting seat 102 is fixed at the center of one side of the outer frame 100 through the support rod 101. The center of the mounting seat 102 is provided with a mounting column 103. An installation hole is formed in the center of the mounting column 103. The fan blade assembly 200 is installed on the mounting seat 102. The motor is arranged between the fan blade assembly 200 and the mounting seat 102. The mounting column 103 is ensured to be located at the center axis of the outer frame 100, and the output shaft of the motor can be connected with the center position of the fan blade assembly 200. The fan blade assembly 200 can be driven to rotate stably by the motor, so as to blow upward to dissipate heat.

[0021] The motor comprises, from outside to inside, a shell 203, a magnetic ring 204, a magnetic core 205, an oil shaft 207 and a shaft core 206. The fan blade assembly 200 is installed at the end of the shaft core 206. The shaft core 206, of which the outer part is sleeved with the oil shaft 207, is inserted into the shaft center of the mounting column 103. A clamping spring 209 is fixedly sleeved with the side of the surface of the shaft core 206 which is above the oil shaft 207. An oil storage cavity is arranged at the position of the outer side of the shaft core 206 which is below the oil shaft 207. Specifically, the position of the fan clamping spring 209 is adjusted, so that the clamping spring 209 rotates simultaneously with the shaft core 206. When the fan operates, the shaft core 206 rotates synchronously. Under the action of centrifugal force, the lubricating oil in the oil storage cavity flows upward along the gap between the outer wall of the shaft core 206 and the inner wall of the oil shaft 207. When the lubricating oil flows to the position of the clamping spring 209, under the action of centrifugal force, the lubricating oil flows along the lower surface of the clamping spring 209 and is thrown out. The lubricating oil is thrown onto the inner wall of the mounting column 103, and then flows back to the oil storage cavity along the gap between the inner wall of the mounting column 103 and the outer wall of the oil shaft 207. Since the fan is always operating, the hydraulic oil will flow upward along the shaft core under the action of centrifugal force, and this behavior is repeated, thereby playing a true lubrication and protection function, and improving the quality and service life of the fan.

[0022] The fan blade assembly 200 comprises a fan blade seat 201 fixedly installed at the end of the shaft core 206. The fan blade seat 201 is arranged in a ring array around the outer periphery. The fan blade seat 201 is driven to rotate by the rotating shaft core 206, so as to drive the fan blades 202 to blow upward, thereby playing a heat dissipation role.

[0023] The shell 203 wraps the magnetic ring 204, so that the inside of the motor is isolated from the outside world, and foreign matters are prevented from falling into the inside of the motor to affect the normal work of the motor. The magnetic ring 204 is sleeved outside the magnetic core 205. The magnetic core 205 is sleeved outside the mounting column 103. The magnetic ring 204 forms a magnetic field in the motor. When electric current flows in, the magnetic field is excited. The magnetic ring 204, the magnetic core 205 and the shaft core 206 form a stator, which can drive the shaft core 206 to rotate.

[0024] The bottom of the magnetic core 205 is provided with a PCB board 210, and the PCB board 210 can be provided with a circuit for supplying power to the motor and controlling the operation of the motor. The center of the PCB board 210 is provided with a hollow slot matched with the mounting column 103, and the PCB board 210 is sleeved outside the mounting column 103 through the hollow slot.

[0025] The top of the mounting hole is provided with a partition plate, and the center of the partition plate is provided with a through hole matched with the shaft core 206. The inside of the mounting hole is located below the partition plate. The shaft core 206, which is sleeved with the oil shaft 207, is located in the lubricating oil flow cavity. When the fan is running, the shaft core 206 rotates synchronously. Under the action of centrifugal force, the lubricating oil in the oil storage cavity flows upward along the gap between the outer wall of the shaft core 206 and the inner wall of the oil shaft 207. When the lubricating oil flows to the position of the snap spring 209, under the action of centrifugal force, the lubricating oil flows along the lower surface of the snap spring 209 and is thrown out. The lubricating oil is thrown onto the inner wall of the mounting column 103, and then the lubricating oil flows back to the oil storage cavity along the gap between the inner wall of the mounting column 103 and the outer wall of the oil shaft 207.

[0026] The inner diameter of the through hole is larger than the diameter of the cross section of the shaft core 206. The diameter of the snap spring 209 is larger than the inner diameter of the through hole. During the upward flow of the lubricating oil along the shaft core 206, when the lubricating oil flows to the position of the snap spring 209, the snap spring 209 can block the lubricating oil from flowing upward along the shaft core 206, preventing the lubricating oil from flowing out. At the same time, when the shaft core 206 drives the snap spring 209 to rotate, the lubricating oil will spread outward along the lower surface of the snap spring 209 and be brushed out. The size of the snap spring 209 is larger than that of the through hole, so that the through hole can be covered by the snap spring 209, preventing the lubricating oil from being thrown into the through hole and avoiding the loss of lubricating oil.

[0027] The surface of the shaft core 206 is provided with an annular groove 208 matched with the snap spring 209. The snap spring 209 is fixedly sleeved on the shaft core 206 through the annular groove 208. The snap spring 209 is fixedly connected to the surface of the shaft core 206 through the annular groove 208, so that the snap spring 209 can rotate synchronously with the shaft core 206. When the lubricating oil flows upward along the shaft core 206, the snap spring 209 will also generate centrifugal force, causing the lubricating oil to flow along the lower surface of the snap spring 209 and be thrown out. The lubricating oil is thrown onto the inner wall of the mounting column 103, and then the lubricating oil flows back to the oil storage cavity along the gap between the inner wall of the mounting column 103 and the outer wall of the oil shaft 207.

[0028] The bottom of the mounting column 103 is provided with an oil seal cover 211. The oil seal cover 211 seals the bottom of the lubricating oil flow cavity, and forms an oil storage cavity below the oil shaft 207. The bottom of the mounting column 103 is sealed by the oil seal cover 211, and the oil storage cavity is formed.

[0029] The graphite pad 212 is arranged on the inner side of the oil seal cover 211 corresponding to the position of the mounting hole, so as to increase the sealing effect of the bottom of the mounting column 103.

[0030] Working principle: when the fan is running, the shaft core 206 rotates synchronously, and under the action of centrifugal force, the lubricating oil in the oil storage cavity flows upward along the gap between the outer wall of the shaft core 206 and the inner wall of the oil shaft 207. When the lubricating oil flows to the position of the clasp 209, under the action of centrifugal force, the lubricating oil flows along the lower surface of the clasp 209 and is thrown out. The lubricating oil is thrown onto the inner wall of the mounting column 103, and then the lubricating oil flows back to the oil storage cavity along the gap between the inner wall of the mounting column 103 and the outer wall of the oil shaft 207. Since the fan is always running, the hydraulic oil will flow upward along the shaft core under the action of centrifugal force, and this behavior will be repeated, thereby achieving the functions of true lubrication and protection, and improving the quality and service life of the fan.

[0031] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

Claims

1. A lubricating oil circulating heat dissipation fan, comprising a horizontally placed outer frame (100) and a fan blade assembly (200) arranged inside the outer frame (100), a mounting seat (102) is arranged at the middle of one side of the outer frame (100), a mounting column (103) is arranged at the center of the mounting seat (102), a mounting hole is arranged at the center of the mounting column (103), the fan blade assembly (200) is mounted on the mounting seat (102), and a motor is arranged between the fan blade assembly (200) and the mounting seat (102), characterized in that: the motor comprises, from outside to inside, a shell (203), a magnetic ring (204), a magnetic core (205), an oil shaft (207) and a shaft core (206); the fan blade assembly (200) is mounted at the end of the shaft core (206), the shaft core (206) with the oil shaft (207) arranged outside is inserted into the center of the mounting column (103), a circlip (209) is fixedly sleeved on the side of the surface of the shaft core (206) above the oil shaft (207), and an oil storage cavity is arranged at the position of the outer side of the shaft core (206) below the oil shaft (207); when the shaft core (206) rotates, under the action of centrifugal force, the lubricating oil in the oil storage cavity flows upwards along the gap between the outer wall of the shaft core (206) and the inner wall of the oil shaft (207), when the lubricating oil flows to the position of the circlip (209), under the action of centrifugal force, the lubricating oil flows along the lower surface of the circlip (209) and is thrown out, the lubricating oil is thrown onto the inner wall of the mounting column (103), and then the lubricating oil returns to the oil storage cavity along the gap between the inner wall of the mounting column (103) and the outer wall of the oil shaft (207).

2. A lubricating oil circulating cooling fan according to claim 1, wherein: supporting rods (101) are arranged in a ring array around the periphery of the mounting seat (102), the ends of the supporting rods (101) are fixedly connected with the outer frame (100), and the mounting seat (102) is fixed at the center of one side of the outer frame (100) through the supporting rods (101).

3. A lubricating oil circulating cooling fan according to claim 1, wherein: the fan blade assembly (200) comprises a fan blade seat (201) fixedly mounted at the end of the shaft core (206), and fan blades (202) are arranged in a ring array around the periphery of the fan blade seat (201).

4. A lubricating oil circulating cooling fan according to claim 1, wherein: the shell (203) wraps the magnetic ring (204), the magnetic ring (204) is sleeved outside the magnetic core (205), and the magnetic core (205) is sleeved outside the mounting column (103).

5. A lubricating oil circulating radiator fan as claimed in claim 4, wherein: a PCB board (210) is arranged at the bottom of the magnetic core (205), a hollow groove matched with the mounting column (103) is arranged at the center of the PCB board (210), and the PCB board (210) is sleeved outside the mounting column (103) through the hollow groove.

6. A lubricating oil circulating radiator fan as claimed in claim 1, wherein: a partition plate is arranged at the top of the inner side of the mounting hole, a through hole matched with the shaft core (206) is arranged at the center of the partition plate, one side of the inner part of the mounting hole below the partition plate is a lubricating oil flowing cavity, and the shaft core (206) with the oil shaft (207) arranged outside is located in the lubricating oil flowing cavity.

7. A lubricating oil circulating radiator fan as claimed in claim 6, wherein: The inner diameter size of the through hole is greater than the diameter size of the section of the shaft core (206), and the diameter size of the snap spring (209) is greater than the inner diameter size of the through hole.

8. A lubricating oil circulating radiator fan as claimed in claim 1, wherein: An annular groove (208) matched with the snap spring (209) is arranged on one side of the surface of the shaft core (206), and the snap spring (209) is fixedly sleeved on the shaft core (206) through the annular groove (208).

9. A lubricating oil circulating radiator fan as claimed in claim 6, wherein: An oil seal cover (211) is threadedly installed at the bottom of the mounting column (103), the oil seal cover (211) blocks the bottom of the lubricating oil flow cavity, and forms an oil storage cavity below the oil shaft (207).

10. A lubricating oil circulating radiator fan as claimed in claim 9, wherein: A graphite pad (212) is arranged on the inner side of the oil seal cover (211) and corresponds to the position of the mounting hole.

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