Energy-saving oven fan based on vortex heat dissipation

Abstract

The invention relates to the technical field of fans, in particular to an energy-saving oven fan based on vortex heat dissipation. The technical problems that when the temperature in an oven tends to be stable, electric energy is wasted due to the load of an oven fan, and the single-direction vortex heat dissipation effect is poor are solved. According to the technical scheme, the brushless motor comprises a shell, a sealing cover, a driving element and the like, the sealing cover is fixedly arranged on the installation side of the shell, the driving element is installed on one side in the shell, a brushless output shaft is installed on the driving element, and a long output shaft is arranged on the sealing cover in a penetrating mode. By arranging special-shaped sliding rods and a push disc, when an annular rotating frame and an annular limiting frame rotate, the special-shaped sliding rods get close to each other, a friction pad extrudes a driving shaft to rotate synchronously, and the special-shaped sliding rods get away from each other, fan blades are driven by a long output shaft to rotate forwards and backwards, an original vortex flow track is disturbed, and diffusion of temperature in the oven is accelerated; and moreover, the driving shaft can idle during forward and reverse rotation, so that the brushless output shaft is no-load, and the energy consumption is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to an energy-saving oven fan based on eddy current heat dissipation. Background Art

[0002] The oven fan is a fan installed on the outside of the oven. The output shaft of the oven motor rotates, causing the fan blades on the motor output shaft to fan the hot air inside the oven, causing the hot air inside the oven to form a vortex and be evenly heated.

[0003] However, when the temperature inside the oven tends to be stable, the long-term oven fan load will increase the energy consumption of the oven fan, while the interior of the oven is evenly heated, resulting in a waste of electricity. In addition, the eddy currents generated by the oven fan are generally unidirectional, and the heat dissipation effect of unidirectional eddy currents is poor, resulting in low heating efficiency inside the oven, further leading to energy waste. To this end, an energy-saving oven fan based on eddy current heat dissipation is provided, which reduces the energy consumption of the oven fan while improving the heating efficiency inside the oven. Summary of the Invention

[0004] In order to overcome the shortcomings of the oven fan load causing energy waste and poor heat dissipation effect of eddy current in one direction when the temperature in the oven tends to be stable, the technical problem of the present invention is to provide an oven fan based on eddy current heat dissipation that reduces energy consumption and improves heat dissipation efficiency.

[0005] The technical solution of the present invention is: an energy-saving oven fan based on eddy current heat dissipation, comprising: case; A sealing cover is fixedly arranged on the installation side of the shell; A driving element is installed on one side of the housing; The brushless output shaft is mounted on the driving element so that the driving element can drive the brushless output shaft to rotate through the magnetic field; A long output shaft is provided on the cover in a through-type manner, a keyway is provided at one end of the long output shaft, and a fan blade is mounted on the keyway through a key; A drive shaft is slidably disposed on the long output shaft, and a first spring is connected between the long output shaft and the drive shaft; A support cylinder is disposed in the shell; The direction-changing drive unit is installed in the support cylinder and connected to the drive shaft to drive the drive shaft to rotate back and forth, thereby reducing energy consumption during the reciprocating rotation of the drive shaft; The inertial energy storage unit is installed on the drive shaft. When the drive shaft rotates, the inertial energy storage unit is used to increase the rotational inertia of the drive shaft to store energy and drive the long output shaft to slide back and forth on the drive shaft; The inertia adjustment unit is installed in the support tube and connected to the inertia energy storage unit, and is used to adjust the rotational inertia of the inertia energy storage unit during rotation.

[0006] Preferably, the direction-changing drive unit includes: The bevel gear disc is fixed on one side of the brushless output shaft; Bevel gear, the bevel gear is rotatably arranged on the inner wall of the support cylinder, and there are multiple bevel gears and all of them are engaged with the bevel gear disc; The bevel gear ring is rotatably arranged in the support cylinder and is engaged with a plurality of bevel gears; An annular rotating frame, the annular rotating frame is fixedly arranged on one side of the bevel gear ring, and the annular rotating frame is rotatably connected to the support cylinder; A special-shaped slide rod; a plurality of rectangular slide grooves are provided in a radial annular array on the annular rotating frame, the special-shaped slide rod is slidably arranged in the rectangular slide groove, and a second spring is connected between the special-shaped slide rod and the rectangular slide groove; A push plate is rotatably arranged on the driving shaft, a linear slide groove is provided on the inclined surface of the special-shaped slide rod, and a plurality of columnar protrusions are provided on the inclined surface of the push plate. The columnar protrusions correspond one-to-one to the linear slide groove of the special-shaped slide rod, and the columnar protrusions of the push plate are slidably connected to the linear slide groove of the special-shaped slide rod.

[0007] Preferably, the direction-changing drive unit further comprises: A first friction disc, the first friction disc is fixedly arranged on one side of the brushless output shaft; The second friction disc is fixedly arranged at one end of the driving shaft, and the second friction disc can contact the first friction disc.

[0008] Preferably, the direction-changing drive unit further comprises: A sun gear is slidably mounted on the drive shaft; A ring gear is fixedly disposed in the supporting cylinder; Planetary gears are arranged between the sun gear and the ring gear. There are multiple planetary gears and they are simultaneously limited by the engagement of the sun gear and the ring gear. A planetary rotating ring, the planetary rotating ring being rotatably arranged on a plurality of planetary gears; The annular limit frame is fixed to one side of the planetary rotating ring and is rotatably connected to the support tube. A wave ring groove is opened on the other side of the annular limit frame, and the wave ring groove is slidably connected to the special-shaped sliding rod.

[0009] Preferably, the direction-changing drive unit further comprises: A friction pad is fixedly arranged at one end of the special-shaped sliding rod; Friction ring: the friction ring is fixedly arranged on the drive shaft.

[0010] Preferably, a plurality of friction grooves are provided at the bottom of the friction pad, wherein the friction groove in the middle of the bottom of the friction pad is shallower, and the friction grooves on the left and right sides of the bottom of the friction pad are deeper.

[0011] Preferably, the inertial energy storage unit includes: A first toothed connecting rod, wherein the first toothed connecting rod is rotatably arranged in an annular array on the drive shaft, and one side of the first toothed connecting rod has teeth; A second toothed connecting rod, wherein the second toothed connecting rod is rotatably arranged in an annular array on one side of the long output shaft, and one side of the second toothed connecting rod has teeth that mesh with the teeth of the first toothed connecting rod; The connecting frame is rotatably arranged on the toothed side of the first toothed connecting rod, and the connecting frame is rotatably connected to the toothed side of the second toothed connecting rod.

[0012] Preferably, the inertial energy storage unit further comprises: A limiting rod, which is fixedly arranged on one side of the connecting frame, and there is at least one limiting rod; The counterweight block is slidably arranged on the limit rod.

[0013] Preferably, the inertia adjustment unit includes: The screw rod is rotatably arranged on the connecting frame, and the screw rod is connected to the counterweight block by a through-thread connection.

[0014] Preferably, the inertia adjustment unit further includes: The plum blossom rod is slidably arranged on the screw rod; The friction wheel is fixedly arranged at one end of the plum blossom rod; A movable ring is movably arranged on the inner wall of the support cylinder and is rotatably connected to the plurality of friction wheels; A limiting ring is fixedly arranged on the inner wall of the supporting tube; A support ring is rotatably arranged on one end of the inner wall of the support cylinder; A friction slip ring, a third spring is fixedly provided on one side of the support ring, the friction slip ring is fixedly provided on one end of the third spring, the friction slip ring is in sliding contact with the inner wall of the support cylinder, and the inclined surface of the friction slip ring is relatively rough; The friction column is movably arranged on the support cylinder. A straight groove is provided on the top of the friction column. The bottom of the friction column is relatively rough. The bottom surface of the friction column can contact the inclined surface of the friction slip ring and slide up and down along the inclined surface of the friction slip ring.

[0015] The beneficial effects of the present invention are: 1. The present invention provides a special-shaped slide rod and a push plate. When the annular rotating frame and the annular limit frame rotate, the special-shaped slide rods approach each other, and the friction ring will be squeezed by the friction pad to make the drive shaft rotate synchronously. The special-shaped slide rods move away from each other, and the push plate will drive the drive shaft to move, so that the second friction plate on the drive shaft and the first friction plate of the brushless output shaft are squeezed and rotated in opposite directions, thereby achieving the forward and reverse rotation effect of the drive shaft. In this way, the fan blades are driven forward and reversely through the long output shaft, disrupting the original eddy current flow trajectory, accelerating the uniform diffusion of temperature in the oven, and improving the heat dissipation efficiency of the fan blades. The drive shaft will idle during the forward and reverse rotation, making the brushless output shaft unloaded and reducing energy consumption.

[0016] 2. The present invention sets a counterweight. When the drive shaft rotates, the first toothed connecting rod and the second toothed connecting rod drive the screw and the limit rod to revolve through the connecting frame, thereby causing the counterweight to rotate. When the counterweight rotates, it will move due to the centrifugal force, thereby increasing its own revolution radius and increasing its own rotational inertia to absorb and store more energy, and release the energy when the counterweight decelerates, thereby ensuring the stability of the drive shaft throughout the rotation process and the continuity of the drive shaft when idling, and making full use of the energy of the drive shaft to reduce energy waste.

[0017] 3. The present invention sets a long output shaft. When the rotation radius of the counterweight changes, the connecting frame will be driven to move through the screw and the limit rod, so that the connecting frame drives the first toothed connecting rod and the second toothed connecting rod to rotate. The rotation of the second toothed connecting rod drives the long output shaft to move back and forth. The back and forth movement of the long output shaft will drive the fan blades on the long output shaft to move back and forth. The back and forth movement of the fan blades will cause the eddy current motion trajectory in the oven to be dislocated during the rotation of the fan blades, thereby generating turbulence. The turbulence will accelerate the uniform distribution of temperature in the oven, thereby effectively improving the heat dissipation efficiency of the device in the oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic cross-sectional view of the housing of the present invention; Figure 3 It is a cross-sectional schematic diagram of the support cylinder of the present invention; Figure 4 It is a structural schematic diagram of the bevel gear disc of the present invention; Figure 5 This is a schematic structural diagram of the annular turret of the present invention; Figure 6 It is a structural schematic diagram of the annular limiting frame of the present invention; Figure 7 Schematic cross-section of the special-shaped sliding rod of the present invention; Figure 8 This is an exploded schematic diagram of the special-shaped sliding rod and the push plate of the present invention; Figure 9 Schematic diagram of the structure of the friction pad of the present invention; Figure 10 This is a schematic structural diagram of the planetary rotating ring of the present invention; Figure 11 Schematic diagram of the structure of the drive shaft of the present invention; Figure 12 Schematic diagram of the structure of the inertia adjustment unit of the present invention; Figure 13 Schematic diagram of the structure of the inertial energy storage unit of the present invention; Figure 14 A schematic cross-sectional view of a counterweight according to the present invention; Figure 15 Schematic diagram of the explosion of the inertia adjustment unit of the present invention.

[0019] In the above figures: 1: housing, 2: cover, 3: driving element, 4: brushless output shaft, 5: long output shaft, 6: driving shaft, 101: support cylinder, 7: direction-changing drive unit, 701: bevel gear plate, 702: bevel gear, 703: bevel gear ring, 704: annular rotating frame, 7041: rectangular slide, 705: special-shaped slide bar, 706: push plate, 707: first friction plate, 708: second friction plate, 709: sun gear, 710: ring gear, 711: planetary gear, 712 : Planetary rotating ring, 713: Annular limit frame, 7131: Wave ring groove, 714: Friction pad, 715: Friction ring, 8: Inertial energy storage unit, 801: First toothed connecting rod, 802: Second toothed connecting rod, 803: Connecting frame, 804: Limit rod, 805: Counterweight, 9: Inertia adjustment unit, 901: Screw, 902: Plum blossom rod, 903: Friction wheel, 904: Movable ring, 905: Limit ring, 906: Support ring, 907: Friction slip ring, 908: Friction column. DETAILED DESCRIPTION

[0020] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the invention are shown. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will fully convey the scope of the invention to those skilled in the art. Example 1

[0021] An energy-saving oven fan based on eddy current heat dissipation, such as Figure 1-Figure 3As shown, it includes: a shell 1, a cover 2, a driving element 3, a brushless output shaft 4, a long output shaft 5, a driving shaft 6, a support cylinder 101, a direction-changing driving unit 7, an inertial energy storage unit 8 and an inertial adjustment unit 9. The cover 2 is fixedly connected to the installation side of the shell 1, the driving element 3 is installed on one side of the shell 1, the brushless output shaft 4 is installed on the driving element 3, so that the driving element 3 can drive the brushless output shaft 4 to rotate through the magnetic field, the long output shaft 5 is connected to the cover 2 in a through-type manner, a key slot is provided at one end of the long output shaft 5, a fan blade is installed on the key slot through a key, the driving shaft 6 is slidably connected to the long output shaft 5, and the long output shaft 5 and the driving shaft 6 are connected in a direction-changing manner. A first spring is connected between the moving shafts 6, the support tube 101 is connected to the middle part of the shell 1, the direction-changing drive unit 7 is installed in the support tube 101 and connected to the drive shaft 6, which is used to drive the drive shaft 6 to rotate back and forth and reduce the energy consumption of the drive shaft 6 during reciprocating rotation. The inertial energy storage unit 8 is installed on the drive shaft 6. When the drive shaft 6 rotates, the inertial energy storage unit 8 is used to increase the rotational inertia of the drive shaft 6 to store energy and drive the long output shaft 5 to slide back and forth on the drive shaft 6. The inertia adjustment unit 9 is installed in the support tube 101 and connected to the inertial energy storage unit 8, which is used to adjust the rotational inertia of the inertial energy storage unit 8 during rotation.

[0022] like Figure 4-Figure 8 As shown, the direction-changing drive unit 7 includes: a bevel gear disc 701, a bevel gear 702, a bevel gear ring 703, an annular rotating frame 704, a special-shaped slide bar 705 and a push plate 706. The bevel gear disc 701 is fixedly connected to one side of the brushless output shaft 4, and the bevel gear 702 is rotatably connected to the inner wall of the support cylinder 101. The bevel gear 702 is provided with multiple and all meshed with the bevel gear disc 701. The bevel gear ring 703 is rotatably connected to the support cylinder 101, and the bevel gear ring 703 is meshed with multiple bevel gears 702. The annular rotating frame 704 is fixedly connected to one side of the bevel gear ring 703, and the annular rotating frame 704 is connected to the support cylinder 101. The cylinder 101 is rotatably connected, and a plurality of rectangular slide grooves 7041 are provided in a radial annular array on the annular rotating frame 704. The special-shaped slide rod 705 is slidably connected in the rectangular slide groove 7041, and a second spring is connected between the special-shaped slide rod 705 and the rectangular slide groove 7041. The push plate 706 is rotatably connected to the drive shaft 6. A linear slide groove is provided on the inclined surface of the special-shaped slide rod 705, and a plurality of columnar protrusions are provided on the inclined surface of the push plate 706. The columnar protrusions correspond one-to-one to the linear slide grooves of the special-shaped slide rod 705, and the columnar protrusions of the push plate 706 are slidably connected to the linear slide grooves of the special-shaped slide rod 705.

[0023] like Figure 6 As shown, the direction-changing drive unit 7 also includes: a first friction disc 707 and a second friction disc 708. The first friction disc 707 is fixedly connected to one side of the brushless output shaft 4, and the second friction disc 708 is fixedly connected to one end of the drive shaft 6. When the first friction disc 707 rotates, it can drive the drive shaft 6 to rotate by frictionally contacting the second friction disc 708.

[0024] like Figure 7-Figure 8 and Figure 10-11 As shown, the direction-changing drive unit 7 also includes: a sun gear 709, a ring gear 710, a planetary gear 711, a planetary rotating ring 712 and an annular limiting frame 713. The sun gear 709 is slidably connected to the drive shaft 6, the ring gear 710 is fixedly connected to the support tube 101, and the planetary gears 711 are connected between the sun gear 709 and the ring gear 710. There are multiple planetary gears 711 and they are simultaneously engaged and limited by the sun gear 709 and the ring gear 710. The planetary rotating ring 712 is rotatably connected to multiple planetary gears 711. The annular limiting frame 713 is fixed to one side of the planetary rotating ring 712, and the annular limiting frame 713 is rotatably connected to the support tube 101. A wave annular groove 7131 is provided on the other side of the annular limiting frame 713, and the wave annular groove 7131 is slidably connected to the special-shaped slide rod 705.

[0025] like Figure 7 and Figure 9 As shown, the direction-changing drive unit 7 also includes: a friction pad 714 and a friction ring 715. The friction pad 714 is fixedly connected to one end of the special-shaped slide bar 705. A plurality of friction grooves are provided at the bottom of the friction pad 714. The friction groove in the middle of the bottom of the friction pad 714 is shallower, and the friction grooves on the left and right sides of the bottom of the friction pad 714 are deeper. When the friction pad 714 rotates, the friction force of the friction pad 714 during extrusion changes more smoothly, thereby reducing the energy loss of the friction force on the rotation of the friction pad 714. The friction ring 715 is fixedly connected to the drive shaft 6.

[0026] In the initial state, the shell 1 is installed on the oven by bolts, and the second spring continuously releases the elastic force to make the friction pad 714 squeeze the friction ring 715, and the two remain locked, and the second friction disc 708 does not contact the first friction disc 707; when the device is working, the staff energizes the driving element 3 to rotate the brushless output shaft 4. Taking the clockwise rotation of the brushless output shaft 4 as an example, the brushless output shaft 4 drives the bevel gear disc 701 to rotate clockwise, and then the bevel gear disc 701 drives the bevel gear ring 703 to rotate counterclockwise through the bevel gear 702, and the bevel gear ring 703 drives the annular rotating frame 704 to rotate synchronously, so that the annular rotating frame 704 drives the friction pad 714 to rotate counterclockwise through the special-shaped sliding rod 705. Since the friction pad 714 squeezes the friction ring 715 and the two remain locked, The friction pad 714 is held in the clamping connection, so that when the friction pad 714 rotates counterclockwise, the friction ring 715 drives the drive shaft 6 to rotate counterclockwise. The rotation of the drive shaft 6 will drive the long output shaft 5 to rotate synchronously, and the inertial energy storage unit 8 stores energy, thereby realizing the control of the long output shaft 5 counterclockwise rotation by this device. It is worth noting that the counterclockwise rotation of the drive shaft 6 drives the sun gear 709 to rotate synchronously. Under the limit of the ring gear 710, the sun gear 709 drives the planetary gear 711 to rotate clockwise. The planetary gear 711 rolls on the inner teeth of the ring gear 710, thereby causing the planetary gear 711 to drive the planetary rotating ring 712 to rotate counterclockwise. The planetary rotating ring 712 drives the annular limiting frame 713 to rotate counterclockwise synchronously. It is worth noting that when the sun gear 70 When the planetary gears 711 are driven to revolve, the planetary reduction structure composed of the sun gear 709, the ring gear 710 and the planetary gears 711 will cause the annular limit frame 713 on the planetary rotating ring 712 to rotate slower than the sun gear 709. The reversing structure composed of the bevel gear plate 701, the bevel gear 702 and the bevel gear ring 703 will not decelerate the annular rotating frame 704, so that there is a speed difference between the annular limit frame 713 and the annular rotating frame 704. The speed difference will guide the special-shaped sliding rod 705 to slide from the wavy ring groove 7131 close to the axis of the annular limit frame 713 to the wavy ring groove 7131 away from the axis of the annular limit frame 713, so that when the annular limit frame 713 rotates counterclockwise, the annular limit frame 713 passes through its own wavy ring groove 71 31 squeezes the special-shaped slide bar 705, and the special-shaped slide bar 705 slides along the rectangular slide groove 7041 of the annular rotating frame 704. At this time, the special-shaped slide bar 705 drives the friction pad 714 to slowly move away from the friction ring 715 and compresses the second spring. At the same time, it pushes the columnar protrusion of the push plate 706 through its own linear slide groove, thereby driving the push plate 706 to move backward. The push plate 706 drives the drive shaft 6 to move backward synchronously, and the drive shaft 6 drives the second friction plate 708 to approach the first friction plate 707. In the process of the second friction plate 708 approaching the first friction plate 707, the friction pad 714 completely separates from the friction ring 715. At this time, the drive shaft 6 has no power drive and puts the brushless output shaft 4 in a low-load state. The brushless output shaft 4 in the low-load state consumes less current when rotating.It can reduce energy consumption by 70%-85%. At the same time, the inertial energy storage unit 8 releases the stored energy for the drive shaft 6 to continue to rotate. The drive shaft 6 drives the fan blades to continue to rotate through the long output shaft 5, ensuring the heat dissipation flow of the airflow in the oven and driving the annular limit frame 713 to continue to rotate until the second friction disk 708 contacts and squeezes the first friction disk 707. At this time, most of the energy stored in the inertial energy storage unit 8 is used to rotate the drive shaft 6, and the special-shaped slide bar 705 is located at the wavy ring groove 7131 away from the axis of the annular limit frame 713. Then the brushless output shaft 4 will directly drive the first friction disk 707 to rotate. The second friction disc 708 rotates clockwise, so that the second friction disc 708 drives the long output shaft 5 to rotate clockwise through the drive shaft 6, thereby completing the control of the clockwise rotation of the long output shaft 5. It is worth noting that the clockwise rotation of the drive shaft 6 drives the sun gear 709 to rotate synchronously. Under the limit of the ring gear 710, the sun gear 709 drives the planetary gear 711 to roll on the inner teeth of the ring gear 710, thereby causing the ring gear 710 to drive the planetary rotating ring 712 to rotate clockwise, and the planetary rotating ring 712 drives the annular limiting frame 713 to rotate synchronously clockwise. At this time, the wavy ring groove 7131 squeezes the special-shaped slide rod 7 05, the special-shaped slide bar 705 slides along the rectangular slide groove 7041 of the annular rotating frame 704, the second spring is released, and the special-shaped slide bar 705 drives the friction pad 714 to approach the friction ring 715. At the same time, the special-shaped slide bar 705 pulls the columnar protrusion of the push plate 706 forward through its own linear slide groove, thereby driving the push plate 706 to move forward, so that the push plate 706 drives the drive shaft 6 to move synchronously, and the drive shaft 6 drives the second friction plate 708 away from the first friction plate 707, so that the drive shaft 6 remains in an unloaded state again until the friction pad 714 contacts and squeezes the friction ring 715 again. At this time, the inertial energy storage unit 8 stores Most of the energy is used to rotate the drive shaft 6, and the special-shaped slide bar 705 is located near the axis of the annular limit frame 713 in the wavy annular groove 7131. The above-mentioned clockwise and counterclockwise rotation changes of the long output shaft 5 are repeated, thereby achieving automatic adjustment of the direction of the long output shaft 5. The change in the direction of the long output shaft 5 enables the long output shaft 5 to continuously switch between clockwise and counterclockwise rotation, thereby causing the airflow in the oven to shift between clockwise and counterclockwise vortexes. The vortexes disrupt the original flow trajectory during the switching process, thereby accelerating the uniform diffusion of temperature in the oven and improving the heat dissipation efficiency of the fan blades. Example 2

[0027] On the basis of Example 1, Figure 12-15As shown, the inertial energy storage unit 8 includes: a first toothed connecting rod 801, a second toothed connecting rod 802 and a connecting frame 803. The first toothed connecting rod 801 is rotatably connected to the drive shaft 6 in an annular array, and one side of the first toothed connecting rod 801 has teeth. The second toothed connecting rod 802 is rotatably connected to one side of the long output shaft 5 in an annular array. One side of the second toothed connecting rod 802 has teeth and meshes with the teeth of the first toothed connecting rod 801. The connecting frame 803 is rotatably connected to the toothed side of the first toothed connecting rod 801, and the connecting frame 803 is rotatably connected to the toothed side of the second toothed connecting rod 802.

[0028] like Figure 12-15 As shown, the inertial energy storage unit 8 also includes: a limiting rod 804 and a counterweight block 805. The limiting rod 804 is fixedly connected to one side of the connecting frame 803. There is at least one limiting rod 804, and the counterweight block 805 is slidably connected to the limiting rod 804.

[0029] like Figure 12-15 As shown, the inertia adjustment unit 9 includes a screw rod 901 , which is rotatably connected to the connecting frame 803 , and the screw rod 901 is threadedly connected to the counterweight block 805 .

[0030] During the rotation of the drive shaft 6, the inertial energy storage unit 8 will start automatically, thereby storing the energy when the drive shaft 6 rotates. Specifically, when the first friction disc 707 contacts the second friction disc 708, or the friction pad 714 contacts the friction ring 715, the rotation of the brushless output shaft 4 will cause the drive shaft 6 to rotate, and the drive shaft 6 drives the first toothed connecting rod 801 and the second toothed connecting rod 802 to revolve synchronously, so that the first toothed connecting rod 801 and the second toothed connecting rod 802 drive the connecting frame 803 to rotate synchronously, and the connecting frame 803 uses the screw 901 and the limit rod 804 to keep the relative position between the counterweight block 805 and the connecting frame 803 fixed, so that the connecting frame 803 drives the counterweight block during rotation. 805 rotates synchronously, and the counterweight 805 generates centrifugal force when rotating, so that the connecting frame 803 drives the connecting frame 803 to move synchronously away from the drive shaft 6 through the screw 901 under the action of centrifugal force, and the connecting frame 803 drives the first toothed connecting rod 801 and the second toothed connecting rod 802 to rotate synchronously. At this time, the second toothed connecting rod 802 moves backward as a whole, and the rotation of the second toothed connecting rod 802 drives the long output shaft 5 to move backward. The long output shaft 5 compresses the first spring. When the first friction disc 707 and the second friction disc 708 are not in contact, and the friction pad 714 and the friction ring 715 are not in contact, the drive shaft 6 is not driven by the power of the brushless output shaft 4, so that the speed gradually slows down, which makes the speed of the counterweight 805 smaller. The centrifugal force on the counterweight 805 also decreases. At this time, the first spring is released to push the long output shaft 5 forward. The long output shaft 5 moves forward to drive the first toothed connecting rod 801 and the second toothed connecting rod 802 to rotate and reset, so that the first toothed connecting rod 801 and the second toothed connecting rod 802 drive the connecting frame 803 to move close to the drive shaft 6, so that the connecting frame 803 is reset. The connecting frame 803 drives the counterweight 805 to reset through the screw 901 and the limit rod 804. It is worth noting that, on the one hand, when the first friction disc 707 is not in contact with the second friction disc 708, and the friction pad 714 is not in contact with the friction ring 715, the drive shaft 6 loses the power of the brushless output shaft 4 and the speed gradually slows down, The rotation speed of the weight block 805 is synchronously slowed down, and the centrifugal force on the counterweight block 805 is also reduced. At this time, the rotational inertia of the counterweight block 805 is reduced. Based on the conservation of angular momentum, the reduction in the rotational inertia of the counterweight block 805 will release energy, providing power for the continued rotation of the drive shaft 6, thereby delaying the process of slowing down the speed of the drive shaft 6 until the drive shaft 6 rotates to drive the first friction disk 707 to contact the second friction disk 708, or the friction pad 714 to contact the friction ring 715, so that the brushless output shaft 4 can provide power for the rotation of the drive shaft 6 again, thereby ensuring the stability of the drive shaft 6 throughout the rotation process and the continuity of the drive shaft 6 when idling, and fully utilizing the energy of the drive shaft 6 to reduce energy waste.On the other hand, the forward and backward movement of the long output shaft 5 will drive the fan blades on the long output shaft 5 to move forward and backward. The forward and backward movement of the fan blades will cause the eddy current motion trajectory in the oven to shift during the rotation of the fan blades, thereby generating turbulence. The turbulence will accelerate the uniform distribution of temperature in the oven, thereby effectively improving the heat dissipation efficiency of the device in the oven. Example 3

[0031] On the basis of Example 2, Figure 12-15 As shown, the inertia adjustment unit 9 also includes: a plum blossom rod 902, a friction wheel 903, a movable ring 904, a limiting ring 905, a support ring 906, a friction slip ring 907 and a friction column 908. The plum blossom rod 902 is slidably connected to the screw rod 901, the friction wheel 903 is fixedly connected to one end of the plum blossom rod 902, the movable ring 904 is movably connected to the inner wall of the support cylinder 101, and the movable ring 904 is rotatably connected to multiple friction wheels 903, the limiting ring 905 is fixedly connected to the inner wall of the support cylinder 101, the support ring 906 is rotatably connected to one end of the inner wall of the support cylinder 101, a third spring is fixedly connected to one side of the support ring 906, and the friction slip ring 907 is fixedly connected to the third spring. At one end of the three springs, the friction ring 907 is in sliding contact with the inner wall of the support tube 101, and the inclined surface of the friction ring 907 is relatively rough. The friction column 908 is movably connected to the support tube 101. A straight groove is provided on the top of the friction column 908 to facilitate the staff to rotate the friction column 908, thereby driving the friction wheel 903 to rotate through the friction ring 907. The rotation of the friction wheel 903 enables the plum blossom rod 902 to drive the screw rod 901 to adjust the position of the counterweight block 805 on the limit rod 804. The bottom of the friction column 908 is relatively rough, and the bottom surface of the friction column 908 can contact the inclined surface of the friction ring 907 and slide up and down along the inclined surface of the friction ring 907.

[0032] Before starting the device, the staff can adjust the position of the counterweight 805 on the limit rod 804 to provide different rotational inertia according to the rotation speed requirements of the long output shaft 5, so that the long output shaft 5 can drive the fan blades to maintain the best heat dissipation effect. The staff presses down the friction column 908 so that the bottom of the friction column 908 contacts and squeezes the inclined surface of the friction ring 907, so that the friction ring 907 moves backward and stretches the third spring. During the movement, the friction ring 907 contacts and squeezes the friction wheel 903 until the friction ring 907 is in a state of friction. The friction ring 907 contacts the limiting ring 905, which prevents the friction ring 907 from over-extruding the friction wheel 903. At this time, the first toothed connecting rod 801 and the second toothed connecting rod 802 remain coaxial, and the teeth of the first toothed connecting rod 801 and the teeth of the second toothed connecting rod 802 are engaged with each other, so that the entire inertial energy storage unit 8 cannot move forward and backward. The screw 901 on the inertial energy storage unit 8 prevents the friction wheel 903 and the movable ring 904 from moving forward and backward through the plum blossom rod 902. Then the staff The output shaft 5 is limited so that the long output shaft 5 cannot rotate. The long output shaft 5 limits the drive shaft 6. The drive shaft 6 cannot rotate, so the entire inertial energy storage unit 8 cannot rotate. The screw 901 on the inertial energy storage unit 8 prevents the movable ring 904 on the friction wheel 903 from rotating through the plum blossom rod 902. Then the staff rotates the friction column 908 through the slot on the friction column 908, so that the friction column 908 drives the friction slip ring 907 to rotate. The friction slip ring 907 rotates through the friction wheel 903 to drive the plum blossom rod 902 rotates, and the plum blossom rod 902 drives the counterweight block 805 to slide on the limit rod 804 through the screw 901, thereby realizing the position adjustment of the counterweight block 805, and adjusting the rotational inertia of the counterweight block 805, so that the long output shaft 5 can drive the fan blades to maintain the best heat dissipation effect. Then the staff loosens the long output shaft 5 and the friction column 908, releases the third spring, and pulls the friction slip ring 907 to reset. The friction slip ring 907 disengages from the friction wheel 903 and squeezes the friction column 908, so that the friction column 908 slides to reset.

[0033] As the counterweight 805 rotates, the second toothed connecting rod 802 moves back and forth as the rotational speed increases or decreases. Furthermore, the second toothed connecting rod 802 drives the screw 901 to move synchronously via the connecting frame 803, causing the screw 901 to drive the friction wheel 903 and the movable ring 904 to move synchronously back and forth via the plum blossom rod 902, thereby achieving adaptive movement of the inertia adjustment unit 9 relative to the connecting frame 803. Although the present invention has been described with reference to exemplary embodiments, it should be understood that the invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to encompass all variations and equivalent structures and functions.

Claims

1. An energy-saving oven fan based on eddy current heat dissipation, Its characteristics are: including: Housing (1); A cover (2), the cover (2) being fixedly arranged on the installation side of the housing (1); A driving element (3), the driving element (3) is mounted on one side of the housing (1); A brushless output shaft (4), the brushless output shaft (4) being mounted on the driving element (3), so that the driving element (3) can drive the brushless output shaft (4) to rotate through a magnetic field; A long output shaft (5), the long output shaft (5) is arranged on the cover (2) in a penetrating manner, a key slot is provided at one end of the long output shaft (5), and a fan blade is mounted on the key slot via a key; A drive shaft (6), the drive shaft (6) is slidably arranged on the long output shaft (5), and a first spring is connected between the long output shaft (5) and the drive shaft (6); A support tube (101), the support tube (101) is arranged in the housing (1); A direction-changing drive unit (7), the direction-changing drive unit (7) is installed in the support cylinder (101) and connected to the drive shaft (6), and is used to drive the drive shaft (6) to rotate back and forth, thereby reducing energy consumption during the reciprocating rotation of the drive shaft (6); An inertial energy storage unit (8), the inertial energy storage unit (8) is mounted on the drive shaft (6), and when the drive shaft (6) rotates, the inertial energy storage unit (8) is used to increase the rotational inertia of the drive shaft (6) to store energy, and drive the long output shaft (5) to slide back and forth on the drive shaft (6); The inertia adjustment unit (9) is installed in the support cylinder (101) and is connected to the inertia energy storage unit (8) for adjusting the rotational inertia of the inertia energy storage unit (8) during rotation.

2. The energy-saving oven fan based on eddy current heat dissipation according to claim 1 is characterized in that: The direction-changing drive unit (7) includes: A conical gear disc (701), the conical gear disc (701) is fixedly arranged on one side of the brushless output shaft (4); Bevel gear (702), the bevel gear (702) is rotatably arranged on the inner wall of the support cylinder (101), and a plurality of bevel gears (702) are provided and all mesh with the bevel gear disc (701); A bevel gear ring (703), the bevel gear ring (703) is rotatably disposed in the support cylinder (101), and the bevel gear ring (703) is meshed with a plurality of bevel gears (702); An annular rotating frame (704), the annular rotating frame (704) is fixedly arranged on one side of the bevel gear ring (703), and the annular rotating frame (704) is rotatably connected to the support cylinder (101); A special-shaped slide bar (705); a plurality of rectangular slide grooves (7041) are provided in a radial annular array on the annular rotating frame (704); the special-shaped slide bar (705) is slidably arranged in the rectangular slide groove (7041), and a second spring is connected between the special-shaped slide bar (705) and the rectangular slide groove (7041); A push plate (706) is rotatably arranged on the drive shaft (6), a linear slide groove is provided on the inclined surface of the special-shaped slide rod (705), a plurality of columnar protrusions are provided on the inclined surface of the push plate (706), the columnar protrusions correspond to the linear slide grooves of the special-shaped slide rod (705) one by one, and the columnar protrusions of the push plate (706) are slidably connected to the linear slide grooves of the special-shaped slide rod (705).

3. The energy-saving oven fan based on eddy current heat dissipation according to claim 2 is characterized in that: The direction-changing drive unit (7) further comprises: A first friction disc (707), the first friction disc (707) being fixedly arranged on one side of the brushless output shaft (4); The second friction disc (708) is fixedly arranged at one end of the drive shaft (6), and the second friction disc (708) is capable of contacting the first friction disc (707).

4. The energy-saving oven fan based on eddy current heat dissipation according to claim 3 is characterized in that: The direction-changing drive unit (7) further comprises: A sun gear (709), the sun gear (709) is slidably disposed on the drive shaft (6); A ring gear (710), the ring gear (710) is fixedly disposed in the support cylinder (101); Planetary gears (711), the planetary gears (711) are arranged between the sun gear (709) and the ring gear (710), a plurality of planetary gears (711) are provided and are simultaneously engaged and limited by the sun gear (709) and the ring gear (710); A planetary rotating ring (712), the planetary rotating ring (712) is rotatably disposed on the plurality of planetary gears (711); An annular limiting frame (713) is fixed to one side of the planetary rotating ring (712), and the annular limiting frame (713) is rotatably connected to the support tube (101). A wave annular groove (7131) is provided on the other side of the annular limiting frame (713), and the wave annular groove (7131) is slidably connected to the special-shaped sliding rod (705).

5. The energy-saving oven fan based on eddy current heat dissipation according to claim 2 is characterized in that: The direction-changing drive unit (7) further comprises: A friction pad (714), the friction pad (714) is fixedly arranged on one end of the special-shaped sliding rod (705); A friction ring (715) is fixedly arranged on the drive shaft (6).

6. The energy-saving oven fan based on eddy current heat dissipation according to claim 5 is characterized in that: A plurality of friction grooves are provided at the bottom of the friction pad (714), wherein the friction groove located in the middle of the bottom of the friction pad (714) is shallower, and the friction grooves located on the left and right sides of the bottom of the friction pad (714) are deeper.

7. The energy-saving oven fan based on eddy current heat dissipation according to claim 1 is characterized in that: The energy storage unit (8) includes: A first toothed connecting rod (801), the first toothed connecting rod (801) is rotatably arranged in an annular array on the drive shaft (6), and one side of the first toothed connecting rod (801) has teeth; a second toothed connecting rod (802), the second toothed connecting rod (802) being rotatably arranged in an annular array on one side of the long output shaft (5), one side of the second toothed connecting rod (802) being provided with teeth that mesh with the teeth of the first toothed connecting rod (801); The connecting frame (803) is rotatably arranged on the toothed side of the first toothed connecting rod (801), and the connecting frame (803) is rotatably connected to the toothed side of the second toothed connecting rod (802).

8. The energy-saving oven fan based on eddy current heat dissipation according to claim 7 is characterized in that: The energy storage unit (8) further comprises: A limiting rod (804), the limiting rod (804) is fixedly arranged on one side of the connecting frame (803), and there is at least one limiting rod (804); The counterweight block (805) is slidably arranged on the limiting rod (804).

9. The energy-saving oven fan based on eddy current heat dissipation according to claim 8 is characterized in that: The regulating unit (9) comprises: The screw rod (901) is rotatably arranged on the connecting frame (803), and the screw rod (901) is connected to the counterweight block (805) by a through-thread connection.

10. The energy-saving oven fan based on eddy current heat dissipation according to claim 9 is characterized in that: The regulating unit (9) further comprises: A plum blossom rod (902) is slidably disposed on the screw rod (901); A friction wheel (903), the friction wheel (903) is fixedly arranged at one end of the plum blossom rod (902); A movable ring (904), the movable ring (904) is movably arranged on the inner wall of the support cylinder (101), and the movable ring (904) is rotatably connected to the plurality of friction wheels (903); A limiting ring (905), the limiting ring (905) is fixedly arranged on the inner wall of the support tube (101); A support ring (906), the support ring (906) is rotatably disposed on one end of the inner wall of the support cylinder (101); A friction slip ring (907) is fixedly provided with a third spring on one side of the support ring (906), and the friction slip ring (907) is fixedly provided at one end of the third spring. The friction slip ring (907) is in sliding contact with the inner wall of the support cylinder (101), and the inclined surface of the friction slip ring (907) is relatively rough. The friction column (908) is movably arranged on the support tube (101) through the friction column (908), and a straight groove is provided on the top of the friction column (908). The bottom of the friction column (908) is relatively rough. The bottom surface of the friction column (908) can contact the inclined surface of the friction ring (907) and slide up and down along the inclined surface of the friction ring (907).

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