Low-noise energy-saving fan

Abstract

The invention discloses a low-noise energy-saving fan, and relates to the technical field of fan noise reduction, the low-noise energy-saving fan comprises two sets of lubricating structures, each lubricating structure comprises a circular ring pipe, the circular ring pipes are matched and aligned with corresponding bearings, and a plurality of nozzles are circumferentially distributed on the sides, close to the corresponding bearings, of the circular ring pipes; the two circular ring pipes are both communicated with a flow dividing pipe, the flow dividing pipe is communicated with a connecting pipe, the connecting pipe is connected with a storage pipe in a matched mode, the side face of the storage pipe is provided with an oil storage structure, the end of the storage pipe is connected with an oil supply structure in a matched mode, the oil storage structure comprises an oil storage tank, and the oil storage tank is fixedly connected to the inner wall of the cover body. Lubricating oil is fed into the storage pipe in the oil supply structure through the oil storage structure, the oil supply structure can automatically feed the lubricating oil into the connecting pipe every time the fan is started, and the lubricating oil enters the corresponding circular ring pipe through the flow dividing pipe and is sprayed to the corresponding bearing from the nozzle.

Description

Technical Field

[0001] The invention relates to the technical field of fan noise reduction, and in particular to a low-noise energy-saving fan. Background Art

[0002] The working principle of the fan is mainly to use an electric motor to drive the fan blades to rotate in order to achieve the purpose of accelerating the circulation of air. Its core component is the motor, which has permanent magnets and coils installed inside. The motor rotates through the principle of electromagnetic induction, thereby driving the fan blades to rotate.

[0003] As the fan is used for a long time, the fan bearings may wear out after a long period of operation, causing the fan to run unsteadily and generate noise. The wear of the bearings will also increase the running resistance of the motor, requiring more energy to maintain operation, which may increase energy consumption. Therefore, it is necessary to actively apply lubricating oil to the bearings regularly.

[0004] In the prior art, active manual maintenance is usually used to lubricate the motor bearings. Lubricating oil needs to be applied to the motor bearings regularly. The motor needs to be disassembled for lubrication when the lubricating oil is added. The operation is relatively cumbersome. If lubrication and maintenance are not performed in time, dry friction damage to the motor bearings is likely to occur, affecting the stability of equipment operation. Summary of the invention

[0005] The object of the present invention is to provide a low-noise energy-saving fan to solve the technical problem in the prior art that it is inconvenient to add lubricating oil to the bearing.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A low-noise energy-saving fan comprises a rotating shaft and a motor body, wherein the motor body comprises two motor shells, the inner walls of the motor shells are inlaid with bearings, the rotating shaft passes through the two bearings, one end of the rotating shaft is connected to a fan blade, and the other end is matched and connected to a gear assembly, a cover is sleeved on the outer side of the motor body, and further comprises:

[0008] A lubrication structure, wherein the lubrication structure is provided with two groups, and each group includes an annular tube, wherein the annular tubes are respectively aligned with corresponding bearings, and a plurality of nozzles are circumferentially distributed on one side of the annular tube close to the corresponding bearing, and the two annular tubes are both connected with a shunt tube, and the shunt tube is connected with a connecting tube, and the end of the connecting tube away from the shunt tube is connected with a storage tube, and an oil storage structure is provided on the side of the storage tube, and the end of the storage tube away from the connecting tube is connected with an oil supply structure, and the oil storage structure includes an oil storage tank, and the oil storage tank is fixedly connected to the inner wall of the cover body;

[0009] The warning component includes a liquid level measuring component and a warning light. The liquid level measuring component is slidingly arranged on the oil storage tank. A touch switch is connected to the top of the oil storage tank. The liquid level measuring component cooperates with the touch switch. The warning light is connected to the outside of the cover body, and the touch switch is electrically connected to the warning light.

[0010] As a further solution of the present invention: the oil supply structure includes a piston disk, a magnetic block and an electrical drive structure, the end of the storage tube away from the connecting tube is provided with an opening, the piston disk is sealed and connected inside the storage tube, the piston disk can slide along the length direction of the storage tube, a drive rod is connected between the piston disk and the magnetic block, the drive rod is located on the outer side of the storage tube and is sleeved with a spring, and the end of the magnetic block away from the drive rod is cooperatively connected to the electrical drive structure.

[0011] As a further solution of the present invention: the electrical drive structure includes an electromagnet, a storage tube and an energized connection end, the electromagnet is fitted to the side of the magnetic block, the end of the electromagnet away from the magnetic block is connected to the conductive wire, the energized connection end is connected to the inner wall of the cover body, and a thermal bimetallic strip is electrically connected between the energized connection end and the electromagnet.

[0012] As a further solution of the present invention: the oil storage structure also includes a delivery pipe, a pump body is arranged on the delivery pipe, one end of the delivery pipe is connected to the storage pipe, and the other end is connected to the oil storage tank, and the delivery pipe and the connecting pipe are both provided with an electric control valve.

[0013] As a further solution of the present invention: the top of the oil storage tank is connected with an oil inlet hopper, the top of the oil inlet hopper is connected to the outside of the cover body, and is detachably connected with a sealing cover.

[0014] As a further solution of the present invention: the liquid level measuring assembly includes a lifting rod and a pointer, the lifting rod is vertically slidably connected to the top of the oil storage tank, the end of the lifting rod located inside the oil storage tank is connected to a floating ball, the pointer is horizontally connected to the side of the lifting rod, the touch switch is fixed on the top of the oil storage tank, the pointer is vertically aligned with the touch switch, the top of the oil storage tank is connected to a limit ring, and the lifting rod is slidably connected to the limit ring.

[0015] As a further solution of the present invention: a strip-shaped through hole aligned with the lifting rod is opened on the rear wall of the cover body, a scale is connected to the rear side of the cover body, and the pointer passes through the strip-shaped through hole and points to the scale.

[0016] As a further solution of the present invention: an adjustment component is provided between the connecting tube and the storage tube, and the adjustment component includes a rotating disk, and the rotating disk is sealingly and rotatably connected between the storage tube, the connecting tube and the storage tube, and a plurality of adjustment holes of different diameters are formed on the rotating disk. An oil outlet hole is formed at one end of the storage tube close to the rotating disk, and the oil outlet hole cooperates with the corresponding adjustment hole.

[0017] Beneficial effects of the present invention:

[0018] 1. In the present invention, when the user turns on the fan, the power circuit supplies power to the power connection end, and the current supplied to the power connection end is transmitted to the thermal bimetallic strip. The current energizes the electromagnet through the thermal bimetallic strip and the conductive wire to generate magnetic force. After the electromagnet is energized, the contact surface of the electromagnet and the magnetic block repel each other with the same polarity. The electromagnet pushes the magnetic block to drive the piston disk to move in the same direction. At this time, the spring is compressed, and the piston disk pushes the lubricating oil inside the storage tube through the oil outlet hole and one of the adjustment holes into the connecting tube. After the lubricating oil in the connecting tube enters the shunt tube, it is shunted to the corresponding annular tube, and the lubricating oil is sprayed onto the bearing from the nozzle. When the rotating shaft drives the inner ring of the bearing to rotate, the ball contacts the lubricating oil during the rotation process, thereby evenly completing the function of self-lubricating the bearing.

[0019] 2. In the present invention, as the fan running time increases, the current is continuously transmitted to the thermal bimetallic strip, causing the temperature of the thermal bimetallic strip to increase continuously. As the temperature of the thermal bimetallic strip continues to rise, when the temperature reaches the specific thermal expansion "critical point" of the thermal bimetallic strip, the bending will reach a degree sufficient to cause the thermal bimetallic strip to disconnect the circuit, and the current path is disconnected. Then, the electromagnet no longer forms a magnetic field and repels the magnetic block, and the piston disk moves toward one end close to the electromagnet to return to an unpowered state, and the coil is no longer energized, thereby achieving self-lubrication of the coil at each start-up, and the motor can stop automatically without the need to manually disassemble the motor for lubrication, thereby improving the convenience of using the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a half-section schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the external structure of the motor body of the present invention;

[0024] Figure 4 A half-section schematic diagram of a motor body of the present invention;

[0025] Figure 5It is a structural schematic diagram of the bearing and the annular tube of the present invention being matched and connected;

[0026] Figure 6 It is a schematic diagram of the explosion structure of the storage tube and the adjustment disk of the present invention;

[0027] Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0028] In the figure: 10, hollow column; 11, base; 12, support shaft; 13, protective shell; 14, fan blade; 15, rotating shaft; 16, motor body; 161, motor shell; 162, coil; 163, bearing; 164, magnetic ring; 165, gear assembly; 17, cover; 18, baffle; 20, annular tube; 21, nozzle; 22, shunt pipe; 221, connecting pipe; 23, storage pipe; 24, piston plate; 25, drive rod; 26, magnetic block; 27, spring; 30, electromagnet; 31, conductive wire; 32, thermal bimetallic strip; 33, power connection terminal; 40, oil storage tank; 41, delivery pipe; 42, electric control valve; 43, oil inlet hopper; 44, sealing cover; 50, lifting rod; 51, floating ball; 52, limit ring; 53, pointer; 54, strip through hole; 55, scale; 551, touch switch; 56, warning light; 60, rotating disk; 61, oil outlet hole; 62, adjustment hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 7As shown, a low-noise energy-saving fan includes a hollow column 10, a base 11 is fixedly connected to the bottom of the hollow column 10, and power lines are installed inside the hollow column 10 and the base 11. The energy-saving fan also includes a rotating shaft 15 and a motor body 16. The bottom of the motor body 16 is fixedly connected to the support shaft 12, and the motor body 16 is rotatably connected to the top of the hollow column 10 through the support shaft 12. The motor body 16 includes two motor shells 161, and the inner walls of the motor shells 161 are inlaid with bearings 163. The two motor shells 161 are detachably connected by bolts, and a coil 162 is cooperatively arranged inside the two motor shells 161. The rotating shaft 15 passes through the two bearings 163. One end of the rotating shaft 15 is detachably connected to the fan blade 14, and the other end is cooperatively connected to the gear assembly 165. The wheel assembly 165 is used to drive the fan to shake its head. A rotating magnetic ring 164 is fixedly connected to the outside of the rotating shaft 15. The coil 162 is connected to the power line through a circuit. When the power is turned on, the current passes through the coil 162 to generate a magnetic field. This magnetic field interacts with the magnetic ring 164 on the rotating shaft 15 to generate a rotation torque, driving the rotating shaft 15 to drive the fan blades 14 to rotate and generate wind force. A cover body 17 is detachably sleeved on the outside of the motor body 16. An opening is provided at one end of the cover body 17 close to the fan blades 14, and the opening is fastened to the baffle 18 by threads. The side of the baffle 18 away from the cover body 17 is detachably connected to a protective shell 13 by bolts or buckles. The protective shell 13 is sleeved on the outside of the fan blades 14 to prevent the fan blades 14 from rotating and accidentally injuring people. The energy-saving fan also includes a lubrication structure and a warning component;

[0031] The lubrication structure is provided with two groups, and each group includes an annular tube 20, and the annular tube 20 is aligned with the corresponding bearing 163, such as Figure 5 As shown, a plurality of nozzles 21 are fixedly distributed circumferentially on one side of the annular tube 20 close to the corresponding bearing 163, and a side of the nozzle 21 away from the annular tube 20 corresponds to the side of the bearing 163. When oil is passed into the annular tube 20, the nozzle 21 can spray lubricating oil to the bearing 163. Since the nozzles 21 are distributed along the circumference of the bearing 163, the uniformity of lubricating oil spraying can be increased. Both annular tubes 20 are connected to the shunt tube 22, and the shunt tube 22 is connected to a connecting tube 221. One end of the connecting tube 221 away from the shunt tube 22 is connected to a storage tube 23, and an oil storage structure is provided on the side of the storage tube 23. One end of the storage tube 23 away from the connecting tube 221 is connected to an oil supply structure. The oil storage structure includes an oil storage tank 40, and the oil storage tank 40 is fixedly connected to the inner wall of the cover body 17.

[0032] The warning component includes a liquid level measurement component and a warning light 56, such as Figure 4 or Figure 7As shown, the liquid level measuring assembly is slidingly arranged on the oil storage tank 40, a touch switch 551 is fixedly connected to the top of the oil storage tank 40, the liquid level measuring assembly cooperates with the touch switch 551, the warning light 56 ​​is fixedly connected to the outside of the cover body 17, and the scale 55 is electrically connected to the warning light 56.

[0033] In some specific embodiments, such as Figure 5 or Figure 6 As shown, in order to facilitate the provision of lubricating oil to the annular tube 20, the oil supply structure includes a piston disc 24, a magnetic block 26 and an electrical drive structure. An opening is provided at one end of the storage tube 23 away from the connecting tube 221, and the piston disc 24 is sealed and connected to the inside of the storage tube 23. The piston disc 24 can slide along the long direction of the storage tube 23. When the piston disc 24 slides, oil is supplied to the inside of the connecting tube 221. A driving rod 25 is fixedly connected between the piston disc 24 and the magnetic block 26. The driving rod 25 is located on the outer side of the storage tube 23 and is sleeved with a spring 27. One end of the spring 27 is fixedly connected to the outer wall of the driving rod 25, and the other end is fixedly connected to one end of the storage tube 23 close to the magnetic block 26. The spring 27 is set for resetting the magnetic block 26, and the end of the magnetic block 26 away from the driving rod 25 is connected to the electrical drive structure.

[0034] In some specific embodiments, such as Figure 4 As shown, in order to facilitate the spraying of lubricating oil on the bearing 163 before each start-up, the electrical drive structure includes an electromagnet 30, a storage tube 23 and an energized connection terminal 33. The electromagnet 30 is fitted with the side of the magnetic block 26. After the electromagnet 30 is energized, the contact surfaces with the magnetic block 26 are of the same polarity. The end of the electromagnet 30 away from the magnetic block 26 is electrically connected to the conductive wire 31. The electromagnet 30 is used to transmit current. The energized connection terminal 33 is fixedly connected to the inner wall of the cover body 17. The energized connection terminal 33 is connected to the energized circuit. When the fan is started, power is supplied to the energized connection terminal 33. A thermal bimetallic strip 32 is electrically connected between the energized connection terminal 33 and the electromagnet 30. The working principle of the thermal bimetallic strip 32 is to utilize the different thermal expansion coefficients of two metals to produce bending deformation when the temperature changes, thereby controlling the on and off of the circuit.

[0035] In some specific embodiments, such as Figure 4As shown, in order to facilitate the provision of lubricating oil to the storage tube 23, the oil storage structure also includes a delivery pipe 41, on which a pump body is provided, one end of the delivery pipe 41 is connected to the storage tube 23, and the other end is connected to the oil storage tank 40, and the delivery pipe 41 and the connecting pipe 221 are both provided with an electric control valve 42. When the thermal bimetal 32 can transmit current, the electric control valve 42 on the connecting pipe 221 is opened, and the electric control valve 42 on the delivery pipe 41 is closed, and the lubricating oil inside the storage tube 23 flows into the connecting pipe 221. When the thermal bimetal 32 does not transmit current, the electric control valve 42 on the connecting pipe 221 is closed, and the electric control valve 42 on the delivery pipe 41 is opened, and the pump body drives the lubricating oil inside the oil storage tank 40 to flow to the storage tube 23.

[0036] In some specific embodiments, such as Figure 4 As shown, in order to facilitate adding stored lubricating oil to the oil storage tank 40, an oil inlet hopper 43 is connected to the top of the oil storage tank 40. The user adds lubricating oil to the inside of the oil storage tank 40 through the oil inlet hopper 43. The top of the oil inlet hopper 43 passes through the outside of the cover body 17, and is detachably connected to a sealing cover 44 by a snap or a thread. Since the oil inlet hopper 43 is funnel-shaped, the diameter of the lubricating oil inlet is increased, and the lubricating oil is not easy to spill when added. Most of the oil inlet hopper 43 is fixed inside the cover body 17, and only the top connection is set outside the cover body 17. The layout is reasonable to prevent the oil inlet hopper 43 from being scratched when the fan swings its head.

[0037] In some specific embodiments, such as Figure 7 As shown, in order to remind the staff to add lubricating oil in time, the liquid level measuring assembly includes a lifting rod 50 and a pointer 53. The lifting rod 50 is vertically slidably connected to the top of the oil storage tank 40. The end of the lifting rod 50 located inside the oil storage tank 40 is connected with a floating ball 51. The pointer 53 is horizontally connected to the side of the lifting rod 50. When the liquid level changes, the floating ball 51 can drive the lifting rod 50 and the pointer 53 to slide up and down. The touch switch 551 is fixed on the top of the oil storage tank 40. The pointer 53 is vertically aligned with the touch switch 551. When the liquid level inside the oil storage tank 40 is too low, the pointer 53 will contact the touch switch 551. A limit ring 52 is connected to the top of the oil storage tank 40. The lifting rod 50 is slidably connected to the limit ring 52. The limit ring 52 limits the lifting rod 50 that moves up and down to prevent the lifting rod 50 from tilting. The limit ring 52 is a semicircular ring with a notch. The pointer 53 can slide up and down along the notch and will not block the movement of the pointer 53.

[0038] In some specific embodiments, such as Figure 7As shown, in order to facilitate understanding of the liquid level of the lubricating oil in the oil storage tank 40, a strip through hole 54 cooperating with the lifting rod 50 is opened on the rear wall of the cover body 17, and a scale 55 is connected to the rear side of the cover body 17. The pointer 53 passes through the strip through hole 54 and points to the scale 55. The pointer 53 can slide up and down along the strip through hole 54. When the internal liquid level of the oil storage tank 40 changes, the scale of the scale 55 pointed by the pointer 53 will also change.

[0039] In some specific embodiments, such as Figure 6 As shown, in order to facilitate the adjustment of the injection amount of the lubricating oil, an adjustment component is provided between the connecting pipe 221 and the storage pipe 23, and the adjustment component includes a rotating disk 60. The rotating disk 60 is sealed and rotatably connected between the storage pipe 23 and the connecting pipe 221 and the storage pipe 23. A plurality of adjustment holes 62 of different diameters are opened through the rotating disk 60. An oil outlet hole 61 is opened at one end of the storage pipe 23 close to the rotating disk 60, and the oil outlet hole 61 cooperates with the corresponding adjustment hole 62. The rotating disk 60 is rotated to connect the oil outlet hole 61 with one of the adjustment holes 62 for the flow of lubricating oil, so as to adjust the speed at which the lubricating oil in the storage pipe 23 enters the connecting pipe 221.

[0040] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0041] When the user turns on the fan, the power circuit supplies power to the coil 162 and the power connection terminal 33. Powering the coil 162 will drive the shaft 15 to drive the fan blades 14 to rotate to generate wind force. The current supplied to the power connection terminal 33 is transmitted to the thermal bimetal 32. The current passes through the thermal bimetal 32 and the conductive wire 31 to energize the electromagnet 30 to generate magnetic force. After the electromagnet 30 is energized, the contact surface with the magnetic block 26 repels each other with the same polarity. The electromagnet 30 pushes the magnetic block 26 to drive the piston plate 24 to move in the same direction. At this time, the spring 27 is compressed and the piston plate 24 The lubricating oil inside the storage tube 23 is pushed through the oil outlet hole 61 and one of the adjusting holes 62 into the connecting tube 221. Since the time when the thermal bimetal 32 is heated to disconnect the circuit is fixed, the injection amount of the lubricating oil can be adjusted by adjusting the size of the adjusting hole 62. After the lubricating oil in the connecting tube 221 enters the diversion tube 22, it is diverted to the corresponding annular tube 20, and the lubricating oil is sprayed from the nozzle 21 onto the bearing 163. When the rotating shaft 15 drives the inner ring of the bearing 163 to rotate, the ball contacts the lubricating oil during the rotation process, thereby completing the lubrication evenly.

[0042] As the fan runs for an increasing amount of time, current is continuously transmitted to the thermal bimetal 32, causing the temperature of the thermal bimetal 32 to increase continuously. As the temperature of the thermal bimetal 32 continues to rise, the expansion difference between the two metals will gradually increase. This expansion difference will cause the bimetal to bend, usually toward the metal side with a smaller thermal expansion coefficient. When the temperature reaches the specific thermal expansion "critical point" of the thermal bimetal 32, this bending will reach a level sufficient to disconnect the thermal bimetal 32, and the current path will be disconnected. Then the electromagnet 30 will no longer form a magnetic field and repel the magnetic block 26. Due to the resilience of the spring 27, the piston disc 24 moves toward the end close to the electromagnet 30 and returns to a non-energized state. When the piston disc 24 moves toward the end close to the electromagnet 30, the sealed space formed by the storage tube 23 and the piston disc 24 increases, and the storage tube 23 draws additional lubricating oil from the inside of the oil storage tank 40. The user can also select the injection amount of the lubricating oil according to the time and the fan running power before use. The rotating disc 60 can be rotated so that the adjustment holes 62 of different calibers coincide with the oil outlet hole 61.

[0043] During operation, the storage tube 23 draws lubricating oil from the inside of the oil storage tank 40 through the delivery tube 41. When the lubricating oil level in the oil storage tank 40 decreases, the floating ball 51 drives the lifting rod 50 and the pointer 53 to drop synchronously. When the lubricating oil in the oil storage tank 40 is about to run out, the pointer 53 contacts the touch switch 551. The touch switch 551 controls the warning light 56 ​​to emit a red light to remind the user to add lubricating oil to avoid untimely oil supply, which may cause wear of the bearing 163 and generate noise. When the sealing cover 44 is opened and lubricating oil is added to the oil storage tank 40 through the oil inlet 43, as the lubricating oil level rises, the floating ball 51 drives the lifting rod 50 and the pointer 53 to rise synchronously. The pointer 53 points to the scale 55. The amount of lubricating oil added can be judged by observing the pointing scale of the pointer 53 to the scale 55 to avoid excessive addition and overflow from the oil inlet 43.

[0044] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A low-noise energy-saving fan, comprising a rotating shaft (15) and a motor body (16), wherein the motor body (16) comprises two motor shells (161), the inner walls of the motor shells (161) are inlaid with bearings (163), the rotating shaft (15) passes through the two bearings (163), one end of the rotating shaft (15) is connected to a fan blade (14), and the other end is matched and connected to a gear assembly (165), and a cover body (17) is sleeved on the outer side of the motor body (16), characterized in that: Also includes: A lubrication structure, wherein the lubrication structure is provided with two groups, and both groups include annular tubes (20), the annular tubes (20) are respectively aligned with corresponding bearings (163), a side of the annular tube (20) close to the corresponding bearing (163) is circumferentially distributed with a plurality of nozzles (21), the two annular tubes (20) are both connected to a shunt tube (22), the shunt tube (22) is connected with a connecting tube (221), one end of the connecting tube (221) away from the shunt tube (22) is connected with a storage tube (23), a side of the storage tube (23) is provided with an oil storage structure, one end of the storage tube (23) away from the connecting tube (221) is connected with an oil supply structure, and the oil storage structure includes an oil storage tank (40), and the oil storage tank (40) is fixedly connected to the inner wall of the cover body (17); A warning component, the warning component comprising a liquid level measuring component and a warning light (56), the liquid level measuring component being slidably arranged on an oil storage tank (40), a touch switch (551) being connected to the top of the oil storage tank (40), the liquid level measuring component being matched with the touch switch (551), the warning light (56) being connected to the outside of a cover body (17), and the touch switch (551) being electrically connected to the warning light (56).

2. A low-noise energy-saving fan according to claim 1, characterized in that: The oil supply structure comprises a piston disc (24), a magnetic block (26) and an electrical drive structure; an end of the storage tube (23) away from the connecting tube (221) is provided with an opening; the piston disc (24) is sealed and connected inside the storage tube (23); the piston disc (24) can slide along the long direction of the storage tube (23); a driving rod (25) is connected between the piston disc (24) and the magnetic block (26); the driving rod (25) is located on the outer side of the storage tube (23) and is sleeved with a spring (27); and the end of the magnetic block (26) away from the driving rod (25) is cooperatively connected with the electrical drive structure.

3. A low-noise energy-saving fan according to claim 2, characterized in that: The electrical drive structure comprises an electromagnet (30), a storage tube (23) and an energized connection end (33); the electromagnet (30) is in contact with the side of the magnetic block (26); one end of the electromagnet (30) away from the magnetic block (26) is connected to a conductive wire (31); the energized connection end (33) is connected to the inner wall of the cover body (17); and a thermal bimetallic strip (32) is electrically connected between the energized connection end (33) and the electromagnet (30).

4. A low-noise energy-saving fan according to claim 1, characterized in that: The oil storage structure further comprises a delivery pipe (41), a pump body being provided on the delivery pipe (41), one end of the delivery pipe (41) being connected to the storage pipe (23), and the other end being communicated with the oil storage tank (40), and an electric control valve (42) being provided on the delivery pipe (41) and the connecting pipe (221).

5. A low-noise energy-saving fan according to claim 1, characterized in that: The top of the oil storage tank (40) is connected to an oil inlet hopper (43), the top of the oil inlet hopper (43) is connected to the outside of the cover body (17), and is detachably connected to a sealing cover (44).

6. A low-noise energy-saving fan according to claim 1, characterized in that: The liquid level measuring assembly comprises a lifting rod (50) and a pointer (53); the lifting rod (50) is vertically slidably connected to the top of the oil storage tank (40); the end of the lifting rod (50) located inside the oil storage tank (40) is connected to a floating ball (51); the pointer (53) is horizontally connected to the side of the lifting rod (50); the touch switch (551) is fixed to the top of the oil storage tank (40); the pointer (53) and the touch switch (551) are vertically aligned; the top of the oil storage tank (40) is connected to a limit ring (52); the lifting rod (50) is slidably connected to the limit ring (52).

7. A low-noise energy-saving fan according to claim 6, characterized in that: A strip-shaped through hole (54) aligned with the lifting rod (50) is formed on the rear wall of the cover body (17), a scale (55) is connected to the rear side of the cover body (17), and the pointer (53) passes through the strip-shaped through hole (54) and points to the scale (55).

8. The low-noise energy-saving fan according to claim 1, characterized in that: An adjustment component is provided between the connecting tube (221) and the storage tube (23), the adjustment component comprising a rotating disk (60), the rotating disk (60) being sealingly rotatably connected between the storage tube (23) and the connecting tube (221) and the storage tube (23), the rotating disk (60) being provided with a plurality of adjustment holes (62) of different diameters, and an oil outlet hole (61) being provided at one end of the storage tube (23) close to the rotating disk (60), the oil outlet hole (61) being matched with the corresponding adjustment hole (62).

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